Method and apparatus in node used for wireless communication

Abstract

The invention discloses a method and an apparatus in a node used for wireless communication. The first node receives a first reference signal; transmitting a target signal for random access; an air interface resource of the target signal is associated to the first reference signal, and a candidate of the first reference signal comprises a plurality of reference signals; whether the measurement for the first reference signal is used for the transmission of the target signal depends on the first reference signal. According to the method and the device, the problem that the terminal uplink sends the beam parameters in the random access process under the RIS scene is solved, uplink and downlink reference signal decoupling in the random access process of the base station and the UE is realized, more flexible uplink and downlink reciprocity of the base station side and the terminal side is supported, the success probability of random access is improved, and the performance of users, especially boundary users, is improved.

Description

Technical Field

[0001] The present application relates to a transmission method and device in a wireless communication system, and in particular to a method and device for transmitting wireless signals in a wireless communication system supporting a cellular network. Background Art

[0002] In 2020, the 5.5G industry vision of 5G evolution was first proposed by the industry. In April 2021, 3GPP (3rd Generation Partner Project) officially named 5G evolution 5.5G as 5G-Advanced, started the standardization process, and planned to define 5G-Advanced technical specifications through three versions: Rel-18 (Release-18), Rel-19 and Rel-20. At the end of 2021, the first batch of 28 projects of Rel-18 were approved, and 5.5G technology research and standardization entered the substantive stage. The future Rel-19 and Rel-20 will further explore new 5G-Advanced services and architectures.

[0003] Reconfigurable Intelligent Surface (RIS) is an artificial electromagnetic surface structure with programmable electromagnetic properties, which contains a large number of independent low-cost passive subwavelength resonant units. Each RIS unit has independent electromagnetic wave control capabilities, and the response of each unit to wireless signals, such as phase, amplitude, polarization, etc., can be controlled by changing the parameters and spatial distribution of the RIS unit. By superimposing the wireless response signals of a large number of RIS units, specific beam propagation characteristics are formed on a macro scale, thereby forming a flexible and controllable shaped beam, achieving the effect of eliminating coverage blind spots, enhancing edge coverage, and increasing the rank of multi-stream transmission. RIS technology has the characteristics of low cost, low energy consumption, programmability, easy deployment, and high shaped gain with a larger antenna scale. It is regarded as a key technology for 5G-Advanced stage research and one of the core visions of 6G. Summary of the invention

[0004] Due to the large transmission loss in the high frequency band, the UE (User Equipment) also needs to use beamforming for transmission and reception during the random access process to meet the requirements of high frequency band coverage. In the existing standard, the UE has achieved downlink synchronization before sending the PRACH (Physical Random Access CHannel), detected the SSB that meets the detection threshold, and obtained the resource configuration information sent by the PRACH through the SIB1 (System Information Block 1) associated with the SSB, and determined the spatial characteristics of the received signal. Subsequently, the UE determines a preamble to be sent through the reception of the SSB. However, the introduction of RIS may affect the characteristics of wireless signal transmission in space, so uplink transmission during random access in the RIS scenario is a problem that needs to be solved.

[0005] In response to the above problems, the present application discloses a solution. It should be noted that although the original intention of the present application is for RIS scenarios, the present application can also be applied to other non-RIS scenarios; further, the use of a unified design scheme for different scenarios (such as other non-RIS scenarios, including but not limited to capacity enhancement systems, short-range communication systems, unlicensed spectrum communications, IoT (Internet of Things), URLLC (Ultra Reliable Low Latency Communication) networks, Internet of Vehicles, etc.) can also help reduce hardware complexity and cost. In the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0006] In particular, the interpretation of the terminology, nouns, functions, and variables in this application (if not otherwise specified) can refer to the definitions in the 3GPP specification protocols TS38 series and TS37 series. If necessary, reference can be made to 3GPP standards TS38.211, TS38.212, TS38.213, TS38.214, TS38.215, TS38.300, TS38.304, TS38.305, TS38.321, TS38.331, TS37.355, TS38.423 to assist in understanding this application.

[0007] As an example, the interpretation of the terms in the present application refers to the definitions of the TS38 series of specification protocols of 3GPP.

[0008] As an example, the interpretation of the terms in the present application refers to the definitions of the TS37 series of specification protocols of 3GPP.

[0009] The present application discloses a method in a first node used for wireless communication, which includes:

[0010] receiving a first reference signal;

[0011] Sending a target signal for random access;

[0012] The air interface resource of the target signal is associated with the first reference signal, and candidates for the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used for sending the target signal depends on the first reference signal.

[0013] As an embodiment, the problem to be solved by the present application includes: how the first node sends the target signal.

[0014] As an embodiment, the problem to be solved by the present application includes: how the first node determines the sending parameters of the target signal.

[0015] As an embodiment, the corresponding problems of the above method include: when the base station improves the cell coverage through RIS, the spatial relationship between the downlink reception and uplink transmission of the UE in the RIS coverage in the FDD scenario may be different from that in the traditional scenario without RIS, and the traditional method of determining the uplink spatial transmission parameters through the downlink spatial reception parameters may no longer be applicable.

[0016] As an embodiment, the corresponding problems of the above method include: the random access process is the first communication between the UE and the network, and there is no signaling interaction process with the network before, so the beam alignment cannot be completed through the pre-signaling configuration, especially in the frequency division multiplexing scenario, when the receiving beam transmission path of the downlink reference signal selected by the UE includes RIS, the association between SSB and PRACH may not be established between the UE and the base station.

[0017] As an embodiment, the characteristics of the above method include: in the present application, the UE implicitly determines the receiving beam transmission path based on the received downlink reference signal. When the receiving beam transmission path of the downlink reference signal selected by the UE includes RIS, the UE does not determine the information related to the target signal sending through the traditional method based on the downlink reference signal measurement. When the receiving beam transmission path of the downlink reference signal selected by the UE does not include RIS, the UE determines the information related to the target signal sending based on the downlink reference signal measurement, thereby solving the above problem.

[0018] As an embodiment, the characteristics of the above method include: both the base station and the UE side support beam reciprocity.

[0019] As an embodiment, the characteristics of the above method include: the first reference signal is used by the first node for downlink synchronization.

[0020] As an embodiment, the characteristics of the above method include: the target signal is a preamble in a random access process.

[0021] As an embodiment, the benefits of the above method include: the present application supports RIS technology, and has the advantages of eliminating coverage blind spots, enhancing edge coverage, and increasing the rank of multi-stream transmission.

[0022] As an embodiment, the benefits of the above method include: being helpful in improving the probability of successful random access.

[0023] As an embodiment, the benefits of the above method include: it is helpful to improve the reliability of transmission.

[0024] As an embodiment, the benefits of the above method include: optimizing the beam direction, reducing the impact of signal fading and multipath effects on communication quality, and improving link quality and data transmission rate.

[0025] According to one aspect of the present application, the above method is characterized in that, when the first reference signal is a first candidate reference signal, the measurement of the first reference signal is used for sending the target signal; when the first reference signal is a second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the first candidate reference signal is any reference signal in a first reference signal subset, and the second candidate reference signal is any reference signal in a second reference signal subset.

[0026] As an embodiment, the characteristics of the above method include: the reference signals in the first reference signal subset are simultaneously used to maintain uplink transmission correlation and downlink coverage of the base station.

[0027] As an embodiment, the characteristics of the above method include: the beamforming vectors corresponding to the reference signals in the first reference signal subset are considered to have uplink and downlink reciprocity.

[0028] As an embodiment, the characteristics of the above method include: the reference signals in the second reference signal subset are only used to maintain downlink coverage of the base station.

[0029] As an embodiment, the characteristics of the above method include: the beamforming vectors corresponding to the reference signals in the second reference signal subset are not considered to have uplink and downlink reciprocity.

[0030] As an embodiment, the benefits of the above method include: improving the reliability of uplink transmission.

[0031] As an embodiment, the benefits of the above method include: reducing the impact of interference and improving the overall capacity of the system.

[0032] As an embodiment, the benefits of the above method include: when configuring RIS, system parameters, beam shape and direction can be optimized only for downlink.

[0033] According to one aspect of the present application, the above method is characterized in that it includes:

[0034] receiving a first signaling;

[0035] Among them, for each reference signal in the target reference signal set, the first signaling indicates a companion reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding companion reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

[0036] As an embodiment, the characteristics of the above method include: the signals in the target reference signal set and the accompanying reference signals are in one-to-one correspondence.

[0037] As an embodiment, the characteristics of the above method include: the reference signals in the target reference signal set are only used by the base station to maintain downlink coverage, and uplink transmission related information is provided by the accompanying reference signals corresponding to the reference signals in the target reference signal set.

[0038] As an embodiment, the characteristics of the above method include: the transmission path of the reference signal in the target reference signal set includes the RIS.

[0039] As an embodiment, the benefits of the above method include: improving the performance of users, especially borderline users.

[0040] As an embodiment, the benefits of the above method include: completing the calibration of the transceiver links on the base station and UE sides, realizing the decoupling of the uplink and downlink reference signals of the base station and UE during the random access process, and supporting more flexible uplink and downlink beam reciprocity on the base station and UE sides.

[0041] As an embodiment, the benefits of the above method include: it is helpful to reduce random access delay and improve the transmission performance of the system.

[0042] According to one aspect of the present application, the above method is characterized in that the candidates for the first reference signal and any of the accompanying reference signals are sent on one cell; at least some of the reference signals among the candidates for the first reference signal are used for cell selection or reselection, and there is at least one accompanying reference signal that cannot be used for cell selection or reselection.

[0043] As an embodiment, the characteristics of the above method include: the first reference signal candidate and the corresponding accompanying reference signal are sent on one cell.

[0044] As an embodiment, the characteristics of the above method include: any reference signal among the candidates of the first reference signal is used for cell selection or reselection.

[0045] As an embodiment, the characteristics of the above method include: at least some of the reference signals among the candidates of the first reference signal are only used for downlink coverage, and each of the reference signals used only for downlink coverage is indicated by an accompanying reference signal by the first signaling in the present application.

[0046] As an embodiment, the characteristics of the above method include: the accompanying reference signal is only used to maintain uplink transmission related information.

[0047] As an embodiment, the existence of at least one accompanying reference signal that cannot be used for cell selection or reselection means that there is at least one accompanying reference signal that is only used by the UE to determine uplink transmission parameters and is not used for the UE to select or reselect a serving cell.

[0048] As an embodiment, the benefits of the above method include: avoiding wasting precious resources in uplink transmission reciprocity and improving resource utilization.

[0049] As an embodiment, the benefits of the above method include: simplifying the design of the system, reducing the requirements for RIS, and reducing the system cost.

[0050] According to one aspect of the present application, the above method is characterized in that when the measurement of the first reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal, or the calculation of the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0051] As an embodiment, the characteristics of the above method include: when the measurement of the accompanying reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal, or the calculation of the transmit power of the target signal, the measurement of the accompanying reference signal is used for the transmission of the target signal.

[0052] As an embodiment, the benefits of the above method include: good backward compatibility.

[0053] As an embodiment, the benefits of the above method include: simplifying system design.

[0054] According to one aspect of the present application, the above method is characterized in that it includes:

[0055] selecting the first reference signal from the candidates of the first reference signals;

[0056] The reception quality of the first reference signal is not lower than or higher than a first threshold.

[0057] As an embodiment, the benefits of the above method include: maximizing the reuse of the SSB or CSI-RS selection mechanism in the current random access process and having good backward compatibility.

[0058] As an embodiment, the benefits of the above method include: improving the accuracy of cell selection, making the UE more inclined to select a cell with a better signal, thereby improving link quality and user experience.

[0059] As an embodiment, the benefits of the above method include: reducing the impact of interference on system performance and user experience, and providing a more reliable communication environment.

[0060] As an embodiment, the benefits of the above method include: ensuring that the UE can obtain sufficiently good signal quality in the initial access phase, reducing the probability of random access failure, and improving the reliability and stability of the system.

[0061] According to one aspect of the present application, the above method is characterized in that when the first reference signal is the second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the second candidate reference signal belongs to the target reference signal set, the first signaling indicates a third reference signal, and the third reference signal is a companion reference signal of the second candidate reference signal; and the measurement of the third reference signal is used for sending the target signal.

[0062] As an embodiment, the characteristics of the above method include: the measurement of the third reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal or the calculation of the transmission power of the target signal.

[0063] As an embodiment, the characteristics of the above method include: the second candidate reference signal belongs to the second reference signal subset in the present application and the target reference signal set in the present application.

[0064] As an embodiment, the benefits of the above method include: ensuring that the first node can use the correct uplink transmission information based on the downlink beam of any candidate reference signal of the first reference signal.

[0065] As an embodiment, the benefits of the above method include: improving the reliability of signal transmission.

[0066] According to one aspect of the present application, the above method is characterized in that the first node is a user equipment.

[0067] According to one aspect of the present application, the above method is characterized in that the first node is a relay node.

[0068] The present application discloses a method in a second node used for wireless communication, which includes:

[0069] sending a first reference signal;

[0070] receiving a target signal for random access;

[0071] The receiver of the first reference signal includes a first node; the air interface resources of the target signal are associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used by the first node for sending the target signal depends on the first reference signal.

[0072] According to one aspect of the present application, the above method is characterized in that, when the first reference signal is a first candidate reference signal, the measurement of the first reference signal is used by the first node for sending the target signal; when the first reference signal is a second candidate reference signal, the measurement of the first reference signal is not used by the first node for sending the target signal; the first candidate reference signal is any reference signal in a first reference signal subset, and the second candidate reference signal is any reference signal in a second reference signal subset.

[0073] According to one aspect of the present application, the above method is characterized in that it includes:

[0074] Sending a first signaling;

[0075] Among them, for each reference signal in the target reference signal set, the first signaling indicates a companion reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding companion reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

[0076] According to one aspect of the present application, the above method is characterized in that the candidates for the first reference signal and any of the accompanying reference signals are sent on one cell; at least some of the reference signals among the candidates for the first reference signal are used for cell selection or reselection, and there is at least one accompanying reference signal that cannot be used for cell selection or reselection.

[0077] According to one aspect of the present application, the above method is characterized in that when the measurement of the first reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal, or the calculation of the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0078] According to one aspect of the present application, the above method is characterized in that it includes:

[0079] sending the candidate for the first reference signal;

[0080] The first node selects the first reference signal from the candidates of the first reference signals; and the reception quality of the first reference signal is not lower than or higher than a first threshold.

[0081] According to one aspect of the present application, the above method is characterized in that when the first reference signal is the second candidate reference signal, the measurement of the first reference signal is not used by the first node for sending the target signal; the second candidate reference signal belongs to the target reference signal set, the first signaling indicates a third reference signal, and the third reference signal is a companion reference signal of the second candidate reference signal; the measurement of the third reference signal is used by the first node for sending the target signal.

[0082] According to one aspect of the present application, the above method is characterized in that the second node is a base station.

[0083] According to one aspect of the present application, the above method is characterized in that the second node is a user equipment.

[0084] According to one aspect of the present application, the above method is characterized in that the second node is a serving cell.

[0085] According to one aspect of the present application, the above method is characterized in that the second node is a serving cell of the first node.

[0086] According to one aspect of the present application, the above method is characterized in that the second node is a relay node.

[0087] The present application discloses a device for a first node used for wireless communication, comprising:

[0088] A first receiver receives a first reference signal;

[0089] A first transmitter transmits a target signal for random access;

[0090] The air interface resource of the target signal is associated with the first reference signal, and candidates for the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used for sending the target signal depends on the first reference signal.

[0091] The present application discloses a device for a second node used for wireless communication, comprising:

[0092] A second transmitter sends a first reference signal;

[0093] A second receiver receives a target signal for random access;

[0094] The receiver of the first reference signal includes a first node; the air interface resources of the target signal are associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used by the first node for sending the target signal depends on the first reference signal.

[0095] As an embodiment, compared with the traditional solution, the present application has the following advantages but not limited to:

[0096] Support RIS technology, which has the advantages of eliminating coverage blind spots, enhancing edge coverage and increasing the rank of multi-stream transmission;

[0097] Improved performance for users, especially edge users;

[0098] It is beneficial to improve the probability of successful random access;

[0099] The uplink and downlink reference signals of the base station and UE are decoupled, supporting more flexible uplink and downlink reciprocity between the base station side and the UE side. BRIEF DESCRIPTION OF THE DRAWINGS

[0100] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0101] Figure 1 A flowchart showing first node transmission according to an embodiment of the present application is shown;

[0102] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present application is shown;

[0103] Figure 3 A schematic diagram showing an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0104] Figure 4A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0105] Figure 5 A first flow chart showing transmission between a first node and a second node according to an embodiment of the present application is shown;

[0106] Figure 6 A second flow chart showing transmission between a first node and a second node according to an embodiment of the present application;

[0107] Figure 7 A third flow chart showing transmission between a first node and a second node according to an embodiment of the present application;

[0108] Figure 8 A schematic diagram showing candidates for a first reference signal according to an embodiment of the present application is shown;

[0109] Fig. 9 A schematic diagram showing a target reference signal set and a companion reference signal according to an embodiment of the present application is shown;

[0110] Fig.10 A schematic diagram showing candidates for a first reference signal and accompanying reference signals according to an embodiment of the present application is shown;

[0111] Fig.11 A schematic diagram showing a third reference signal according to an embodiment of the present application is shown;

[0112] Fig.12 A schematic diagram showing that measurement of a first reference signal is used for target signal transmission according to an embodiment of the present application;

[0113] Fig.13 A schematic diagram of a smart metasurface according to an embodiment of the present application is shown;

[0114] Fig.14 A structural block diagram of a processing device used in a first node according to an embodiment of the present application is shown;

[0115] Fig.15 A structural block diagram of a processing device used in a second node according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0116] 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 in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0117] Example 1

[0118] Embodiment 1 illustrates a flowchart of the first node transmission according to an embodiment of the present application, as shown in the attached Figure 1 As shown in the attached Figure 1 In the example, each box represents a step. In particular, the order of the steps in the box does not represent a specific time sequence between the steps.

[0119] In step 101 , the first node receives a first reference signal; in step 102 , the first node sends a target signal for random access.

[0120] In Embodiment 1, the air interface resource of the target signal is associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used for sending the target signal depends on the first reference signal.

[0121] As an embodiment, the first node receives the first reference signal.

[0122] As an embodiment, the first reference signal is broadcast.

[0123] As an embodiment, the first reference signal is non-unicast.

[0124] As an embodiment, the first reference signal is CSI-RS (Channel State Information-Reference Signal) or SSB.

[0125] As an embodiment, the SSB described in this application refers to: Synchronization Signal Block.

[0126] 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.

[0127] Typically, the reception occasions of PBCH, PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal) are in consecutive symbols and form an SS / PBCH block.

[0128] As an embodiment, the first reference signal is CSI-RS.

[0129] As an embodiment, the first reference signal occupies one CSI-RS resource.

[0130] As an embodiment, the first reference signal occupies an NZP (non-zero-power) CSI-RS resource.

[0131] As an embodiment, the first reference signal occupies a CSI-RS resource set.

[0132] As an embodiment, the first reference signal occupies an NZP CSI-RS resource set.

[0133] As an embodiment, the first reference signal is SSB.

[0134] As an embodiment, the first reference signal corresponds to an RS (Reference Signal) resource identity (Identification, Id).

[0135] As an embodiment, the RS resource identity described in the present application is used to identify the RS resource.

[0136] As an embodiment, the RS resource identity described in the present application is an index of the RS resource.

[0137] As an embodiment, the RS resource identity described in the present application includes a configuration index of the RS resource.

[0138] As an embodiment, the RS resource identity described in the present application is a configuration index of the RS resource.

[0139] As an embodiment, the first reference signal corresponds to an NZP-CSI-RS-ResourceId.

[0140] As an embodiment, the first reference signal corresponds to an SSB-Index.

[0141] As an embodiment, the first reference signal corresponds to an ssb-Index.

[0142] As an embodiment, the first reference signal corresponds to an RS resource set identity.

[0143] As an embodiment, the RS resource set identity described in the present application is used to identify the RS resource set.

[0144] As an embodiment, the RS resource set identity described in the present application is an index of the RS resource set.

[0145] As an embodiment, the RS resource set identity described in the present application includes a configuration index of the RS resource set.

[0146] As an embodiment, the first reference signal corresponds to an NZP-CSI-RS-ResourceSetId.

[0147] As an embodiment, the first node sends the target signal for random access.

[0148] As an embodiment, the random access refers to Type 1 random access.

[0149] As an embodiment, the random access refers to Type 2 random access.

[0150] As an embodiment, the random access refers to 4-step random access.

[0151] As an embodiment, the random access refers to 2-step random access.

[0152] As an embodiment, the random access refers to initial random access.

[0153] As an embodiment, the random access refers to contention-based random access (Contention-Based Random Access, CBRA).

[0154] As an embodiment, the target signal is used for random access.

[0155] As an embodiment, the target signal is used for CBRA.

[0156] As an embodiment, the target signal is for initial random access.

[0157] As an embodiment, the target signal is for obtaining downlink synchronization.

[0158] As an embodiment, the target signal includes a baseband signal.

[0159] As an embodiment, the target signal includes a radio frequency signal.

[0160] As an embodiment, the target signal includes a wireless signal.

[0161] As an embodiment, the target signal includes a random access preamble.

[0162] As an embodiment, the target signal is generated by a preamble sequence.

[0163] As an embodiment, the target signal is generated by a pseudo-random sequence.

[0164] As an embodiment, the target signal is generated by a ZC (ZaddoffChu) sequence.

[0165] As an embodiment, the target signal includes RACH (Random Access CHannel).

[0166] As an embodiment, the target signal includes PRACH (Physical Random Access CHannel).

[0167] As an embodiment, the target signal includes Msg1.

[0168] As an embodiment, Msg1 described in this application refers to: Massage 1, message 1.

[0169] As an embodiment, Msg1 described in this application refers to: MSG 1, message 1.

[0170] As an embodiment, Msg1 described in this application refers to: Msg 1, message 1.

[0171] As an embodiment, the target signal includes MsgA.

[0172] As an embodiment, MsgA described in this application refers to: MassageA, message A.

[0173] As an embodiment, MsgA described in this application refers to: MSGA, message A.

[0174] As an embodiment, MsgA described in this application refers to: MsgA, message A.

[0175] As an embodiment, the target signal occupies at least one RE (Resouce Element).

[0176] Typically, one RE described in the present application occupies one symbol in the time domain and one subcarrier in the frequency domain.

[0177] As an embodiment, the symbol described in the present application is a single-carrier symbol.

[0178] As an embodiment, the symbol described in the present application is a multi-carrier symbol.

[0179] As an embodiment, the multi-carrier symbol described in the present application is a SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbol.

[0180] As an embodiment, the multi-carrier symbol described in the present application is a FBMC (Filter Bank Multi Carrier) symbol.

[0181] As an embodiment, the multi-carrier symbol described in the present application is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0182] As an embodiment, the symbol described in the present application is obtained after the output of a transform precoding is subjected to OFDM symbol generation.

[0183] As an embodiment, the multi-carrier symbol described in the present application is a DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbol.

[0184] As an embodiment, the multi-carrier symbol described in the present application includes a CP (Cyclic Prefix).

[0185] As an embodiment, the target signal occupies at least one symbol in the time domain.

[0186] As an embodiment, the target signal occupies at least one RB (Resource Block) in the frequency domain.

[0187] Typically, one RB described in the present application occupies 12 consecutive subcarriers in the frequency domain.

[0188] As an embodiment, the RB described in the present application includes a PRB (Physical Resource Block).

[0189] As an embodiment, the RB described in this application refers to PRB.

[0190] As an embodiment, the target signal occupies one RO.

[0191] As an embodiment, the RO mentioned in this application refers to: PRACH Occasion, PRACH opportunity.

[0192] As an embodiment, the RO mentioned in the present application refers to: RACH Occasion, RACH opportunity.

[0193] As an embodiment, the RO mentioned in this application refers to: RAOccasion, RA opportunity.

[0194] As an embodiment, the first reference signal and the target signal are respectively located in two operating bands.

[0195] As an embodiment, the first reference signal and the target signal are based on FDD transmission.

[0196] As an embodiment, the FDD mentioned in this application refers to: Frequency Division Duplex.

[0197] As an embodiment, the FDD mentioned in this application refers to: Frequency Division Duplexing.

[0198] As an embodiment, the duplex mode of the frequency band occupied by the first reference signal is FDD.

[0199] As an embodiment, the duplex mode of the frequency band occupied by the target signal is FDD.

[0200] As a sub-embodiment of the above two embodiments, the first reference signal is transmitted in a downlink working band of the frequency band.

[0201] As a sub-embodiment of the above two embodiments, the target signal is transmitted in an uplink working band of the frequency band.

[0202] As a sub-embodiment of the above two embodiments, the frequency band occupied by the first reference signal is identified by a working band index.

[0203] As a sub-embodiment of the above two embodiments, the frequency band occupied by the target signal is identified by a working band index.

[0204] As an embodiment, the frequency domain resources occupied by the downlink working band and the frequency domain resources occupied by the uplink working band in the present application are orthogonal in the frequency domain.

[0205] As an embodiment, the air interface resources of the target signal are associated with the first reference signal.

[0206] As an embodiment, the air interface resources include time domain resources.

[0207] As an embodiment, the air interface resources include frequency domain resources.

[0208] As an embodiment, the air interface resources include time-frequency resources.

[0209] As an embodiment, the air interface resources include code domain resources.

[0210] As an embodiment, the air interface resources include RO.

[0211] As an embodiment, the air interface resources include time-frequency resources and code domain resources.

[0212] As an embodiment, the air interface resources include time domain resources, frequency domain resources and code domain resources.

[0213] As an embodiment, the time-frequency resources of the target signal are implicitly indicated by the time domain position of the first reference signal.

[0214] As an embodiment, the time-frequency resources of the target signal are implicitly indicated by the time-frequency position of the first reference signal.

[0215] As an embodiment, the time-frequency resources of the target signal are implicitly indicated by the reference signal resources of the first reference signal.

[0216] As an embodiment, the time-frequency resources of the target signal are implicitly indicated by the reference signal resource identity corresponding to the first reference signal.

[0217] As an embodiment, the code domain resources of the target signal are implicitly indicated by the time domain position of the first reference signal.

[0218] As an embodiment, the code domain resources of the target signal are implicitly indicated by the time-frequency position of the first reference signal.

[0219] As an embodiment, the code domain resources of the target signal are implicitly indicated by the reference signal resources of the first reference signal.

[0220] As an embodiment, the code domain resource of the target signal is implicitly indicated by the reference signal resource identity corresponding to the first reference signal.

[0221] As an embodiment, the occupied RO of the target signal is implicitly indicated by the time domain position of the first reference signal.

[0222] As an embodiment, the occupied RO of the target signal is implicitly indicated by the time-frequency position of the first reference signal.

[0223] As an embodiment, the occupied RO of the target signal is implicitly indicated by the reference signal resource of the first reference signal.

[0224] As an embodiment, the RO occupied by the target signal is implicitly indicated by the reference signal resource identity corresponding to the first reference signal.

[0225] As an embodiment, the air interface resources of the target signal are associated with the time domain position of the first reference signal.

[0226] As an embodiment, the air interface resources of the target signal are associated with the time-frequency position of the first reference signal.

[0227] As an embodiment, the air interface resources of the target signal are associated with the reference signal resources of the first reference signal.

[0228] As an embodiment, the air interface resource of the target signal is associated with the corresponding reference signal resource identity of the first reference signal.

[0229] As an embodiment, the feature "the air interface resources of the target signal are associated with the first reference signal" means that the first reference signal is used to determine the time domain resources occupied by the target signal.

[0230] As an embodiment, the feature "the air interface resources of the target signal are associated with the first reference signal" means that the first reference signal is used to determine the frequency domain resources occupied by the target signal.

[0231] As an embodiment, the feature "the air interface resources of the target signal are associated with the first reference signal" means that the first reference signal is used to determine the code domain resources occupied by the target signal.

[0232] As an embodiment, the feature "the air interface resource of the target signal is associated with the first reference signal" means that the first reference signal is associated with the RO occupied by the target signal.

[0233] As an embodiment, the feature “the air interface resources of the target signal are associated with the first reference signal” means that: the first reference signal is used to determine the air interface resources occupied by the target signal.

[0234] As an embodiment, the candidates for the first reference signal include multiple reference signals.

[0235] As an embodiment, the candidates for the first reference signal are all broadcast.

[0236] As an embodiment, the candidates for the first reference signal are all non-unicast.

[0237] As an embodiment, the candidate for the first reference signal is sent by a cell.

[0238] As an embodiment, the candidates for the first reference signal include K1 reference signals, where K1 is a positive integer greater than 1.

[0239] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals is a CSI-RS or an SSB.

[0240] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals is a CSI-RS.

[0241] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals occupies one CSI-RS resource.

[0242] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals occupies one NZP CSI-RS resource.

[0243] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals occupies one NZP CSI-RS resource set.

[0244] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals is SSB.

[0245] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals corresponds to an RS resource identity.

[0246] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals corresponds to one NZP-CSI-RS-ResourceId.

[0247] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals corresponds to an SSB-Index.

[0248] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals corresponds to an ssb-Index.

[0249] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals corresponds to an RS resource set identity.

[0250] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals corresponds to one NZP-CSI-RS-ResourceSetId.

[0251] As a sub-embodiment of this embodiment, the K1 reference signals are all CSI-RS or are all SSB.

[0252] As a sub-embodiment of this embodiment, the K1 reference signals are all CSI-RS.

[0253] As a sub-embodiment of this embodiment, the K1 reference signals respectively occupy K1 CSI-RS resources.

[0254] As a sub-embodiment of this embodiment, the K1 reference signals respectively occupy K1 NZP CSI-RS resources.

[0255] As a sub-embodiment of this embodiment, the K1 reference signals occupy one CSI-RS resource set.

[0256] As a sub-embodiment of this embodiment, the K1 reference signals occupy one NZP CSI-RS resource set.

[0257] As a sub-embodiment of this embodiment, the K1 reference signals are all SSB.

[0258] As a sub-embodiment of this embodiment, the K1 reference signals belong to one SSB burst.

[0259] As a sub-embodiment of this embodiment, the K1 reference signals correspond to K1 RS resource identities respectively.

[0260] As a sub-embodiment of this embodiment, the K1 reference signals correspond to K1 NZP-CSI-RS-ResourceIds respectively.

[0261] As a sub-embodiment of this embodiment, the K1 reference signals correspond to K1 SSB-Index respectively.

[0262] As a sub-embodiment of this embodiment, the K1 reference signals correspond to K1 ssb-Index respectively.

[0263] As a sub-embodiment of this embodiment, the K1 reference signals correspond to one NZP CSI-RS resource set identity.

[0264] As a sub-embodiment of this embodiment, the K1 reference signals correspond to one NZP-CSI-RS-ResourceSetId.

[0265] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals is used for coverage of the second node in the present application.

[0266] As a sub-embodiment of this embodiment, at least one reference signal among the K1 reference signals is used to maintain coverage of a serving cell of the first node.

[0267] As a sub-embodiment of this embodiment, any one of the K1 reference signals is used for coverage of the second node in this application.

[0268] As a sub-embodiment of this embodiment, any one of the K1 reference signals is used to maintain coverage of a serving cell of the first node.

[0269] As an embodiment, any two reference signals among the plurality of reference signals are not QCL or cannot be assumed to be QCL.

[0270] As an embodiment, any two reference signals among the candidates of the first reference signal are not QCL or cannot be assumed to be QCL.

[0271] As an embodiment, the QCL described in this application refers to: Quasi Co-Location.

[0272] As an embodiment, the QCL described in this application refers to: Quasi Co-Located.

[0273] As an embodiment, the QCL described in this application includes QCL parameters.

[0274] As an example, the QCL described in this application includes a QCL assumption.

[0275] As an embodiment, the QCL types described in this application include TypeA, TypeB, TypeC and TypeD.

[0276] As an embodiment, the QCL parameters of the QCL type Type A in the present application include Doppler shift, Doppler spread, average delay and delay spread; the QCL parameters of the QCL type Type B include Doppler shift and Doppler spread; the QCL parameters of the QCL type Type C include Doppler shift and average delay; the QCL parameters of the QCL type Type D include spatial reception parameters (spatialRxparameter).

[0277] As an embodiment, the QCL described in the present application includes at least one of Doppler shift, Doppler spread, average delay, delay spread, spatial transmission parameter (Spatial Txparameter) or spatial reception parameter (Spatial Rxparameter).

[0278] As an embodiment, the specific definitions of TypeA, TypeB, TypeC and TypeD described in this application refer to Section 5.1.5 of TS 38.214.

[0279] As an embodiment, the candidate for the first reference signal is configured by a SIB1 (System Information Block 1) message.

[0280] As an embodiment, the candidates for the first reference signal consist of all reference signals used for cell selection configured by SIB1 of the one cell.

[0281] As an embodiment, the candidate for the first reference signal is configured through servingCellConfigCommon in the SIB1 message.

[0282] As an embodiment, the candidate of the first reference signal is configured through CellGroupConfig IE.

[0283] As an embodiment, the candidate of the first reference signal is configured through ServingCellConfigCommon in CellGroupConfig IE.

[0284] As an embodiment, the candidate of the first reference signal is configured through ssb-PositionsInBurst in ServingCellConfigCommonSIB IE.

[0285] As a sub-embodiment of this embodiment, the candidates for the first reference signal are configured through the inOneGroup field and the groupPresence field in the ssb-PositionsInBurst field.

[0286] As a subsidiary embodiment of this sub-embodiment, the candidate of the first reference signal corresponds to the SSB(s) corresponding to the SSB Index indicated as "1" in the inOneGroup field and the groupPresence field.

[0287] As an embodiment, the candidate of the first reference signal is configured through ssb-PositionsInBurst in ServingCellConfigCommonIE.

[0288] As a sub-embodiment of this embodiment, the candidate of the first reference signal is configured by shortBitmap in ssb-PositionsInBurst.

[0289] As a subsidiary embodiment of this sub-embodiment, the candidate of the first reference signal corresponds to the SSB(s) corresponding to the SSB Index indicated as "1" in the shortBitmap field.

[0290] As a sub-embodiment of this embodiment, the candidate of the first reference signal is configured through the mediumBitmap in ssb-PositionsInBurst.

[0291] As a subsidiary embodiment of this sub-embodiment, the candidate of the first reference signal corresponds to the SSB(s) corresponding to the SSB Index indicated as "1" in the mediumBitmap field.

[0292] As a sub-embodiment of this embodiment, the candidate of the first reference signal is configured through the longBitmap in ssb-PositionsInBurst.

[0293] As a subsidiary embodiment of this sub-embodiment, the candidate of the first reference signal corresponds to the SSB(s) corresponding to the SSB Index indicated as "1" in the longBitmap field.

[0294] As an embodiment, the measurement of the first reference signal includes channel measurement.

[0295] As an embodiment, the measurement of the first reference signal is a channel measurement.

[0296] As an embodiment, the measurement of the first reference signal includes interference measurement (InterferenceMeasurement, IM).

[0297] As an embodiment, the measurement of the first reference signal includes layer 1 (Layer 1, L1) measurement.

[0298] As an embodiment, the measurement of the first reference signal includes layer 3 (Layer 3, L3) measurement.

[0299] As an embodiment, the measurement of the first reference signal includes RSRP (Reference Signal Received Power) measurement.

[0300] As an embodiment, the measurement of the first reference signal includes RSRQ (Reference Signal Received Quality) measurement.

[0301] As an embodiment, the measurement of the first reference signal includes RSSI (Received Signal Strength Indicator) measurement.

[0302] As an embodiment, the measurement of the first reference signal includes BLER (BLock Error Rate, block error rate) measurement.

[0303] As an embodiment, the measurement of the first reference signal includes SINR (Signal to Noise and Interference Ratio) measurement.

[0304] As an embodiment, the measurement of the first reference signal is used to determine uplink transmission timing.

[0305] As an embodiment, the measurement of the first reference signal is not used to determine uplink transmission timing.

[0306] As an embodiment, the measurement of the first reference signal is used to determine the spatial filtering adopted for uplink transmission.

[0307] As an embodiment, the measurement of the first reference signal is not used to determine the spatial filtering adopted for uplink transmission.

[0308] As an embodiment, the measurement of the first reference signal is used to determine a spatial transmission parameter (Spatial Tx parameter) adopted for uplink transmission.

[0309] As an embodiment, the measurement of the first reference signal is not used to determine the spatial transmission parameters adopted for uplink transmission.

[0310] As an embodiment, the spatial transmission parameters described in the present application include at least one of a transmitting antenna port, a transmitting antenna port group, a transmitting beam, a transmitting analog beamforming matrix, a transmitting analog beamforming vector, a transmitting beamforming matrix, a transmitting beamforming vector or a spatial domain transmitting filter.

[0311] As an embodiment, the measurement of the first reference signal is used to determine a spatial reference relationship adopted for uplink transmission.

[0312] As an embodiment, the measurement of the first reference signal is not used to determine the spatial reference relationship adopted for uplink transmission.

[0313] As an embodiment, the measurement of the first reference signal is used to determine a path loss (PathLoss, PL) referenced by uplink transmit power.

[0314] As an embodiment, the measurement of the first reference signal is not used to determine the path loss referenced by the uplink transmit power.

[0315] As an embodiment, the measurement of the first reference signal is used for downlink synchronization.

[0316] As an embodiment, the measurement of the first reference signal is used for cell search or cell reselection.

[0317] As an embodiment, the measurement of the first reference signal is used for BLF (Beam Link Failure).

[0318] As an embodiment, the measurement of the first reference signal is used in a Link Recovery Procedure.

[0319] As an embodiment, the measurement of the first reference signal is used for RLF (Radio Link Failure).

[0320] As an embodiment, the measurement of the first reference signal is used for RRM (Radio Resource Management).

[0321] As an embodiment, the measurement of the first reference signal is used for RLM (Radio Link Monitoring).

[0322] As an embodiment, the measurement of the first reference signal is used for beam management.

[0323] As an embodiment, the measurement of the first reference signal is used for mobility measurement.

[0324] As an embodiment, the measurement of the first reference signal is used for sending the target signal.

[0325] As an embodiment, the measurement of the first reference signal is not used for sending the target signal.

[0326] As an embodiment, whether the measurement of the first reference signal is used for sending the target signal depends on the first reference signal.

[0327] As an embodiment, whether the measurement of the first reference signal is used for sending the target signal depends on whether the first reference signal belongs to the first reference signal subset in the present application.

[0328] As an embodiment, whether the measurement of the first reference signal is used for sending the target signal depends on whether the first reference signal belongs to the second reference signal subset in the present application.

[0329] As an embodiment, whether the measurement of the first reference signal is used for sending the target signal depends on whether the first reference signal is indicated as a companion reference signal.

[0330] As a sub-embodiment of this embodiment, the first reference signal is indicated as an accompanying reference signal, and the measurement of the first reference signal is not used for sending the target signal; the first reference signal is not indicated as an accompanying reference signal, and the measurement of the first reference signal is used for sending the target signal.

[0331] As an embodiment, whether the measurement of the first reference signal is used for sending the target signal depends on the RS resources occupied by the first reference signal.

[0332] As an embodiment, whether the measurement of the first reference signal is used for sending the target signal depends on whether the first reference signal is indicated with an accompanying reference signal resource.

[0333] As a sub-embodiment of this embodiment, the first reference signal is indicated with an accompanying reference signal resource, and the measurement of the first reference signal is not used for sending the target signal; the first reference signal is not indicated with an accompanying reference signal resource, and the measurement of the first reference signal is used for sending the target signal.

[0334] Example 2

[0335] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached Figure 2 shown.

[0336] Attached Figure 2The network architecture of LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced) and future 5G systems is described. The network architecture of LTE, LTE-A and future 5G systems is called EPS (Evolved Packet System). The 5GNR or LTE network architecture may be referred to as 5GS (5G System) / EPS200 or some other appropriate terminology. 5GS / EPS200 may include one or more UE201, a UE 241 communicating with UE 201 via a sidelink, NG-RAN (Next Generation Radio Access Network) 202, 5G-CN (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet service 230. 5GS / EPS200 may be interconnected with other access networks, but these entities / interfaces are not shown for simplicity. Figure 2As shown, the 5GS / EPS200 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 that provide circuit-switched services. NG-RAN 202 includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol terminations toward UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 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 TRP (Transmitter Receiver Point), or some other suitable term. gNB 203 provides an access point to 5G-CN / EPC 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband physical network devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similar functional devices. 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. gNB 203 is connected to 5G-CN / EPC 210 via S1 / NG interface. 5G-CN / EPC 210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212 and P-GW (Packet Data Network Gateway) / UPF 213.MME / AMF / SMF 211 is a control node that handles signaling between UE 201 and 5G-CN / EPC 210. In general, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF 212, and S-GW / UPF 212 itself is connected to P-GW / UPF 213. P-GW provides UE IP address allocation and other functions. P-GW / UPF 213 is connected to Internet services 230. Internet services 230 include operator-corresponding Internet protocol services, which may specifically include Internet, intranet, IMS (IP Multimedia Subsystem) and packet switching services.

[0337] As an embodiment, the first node in the present application includes the UE 201.

[0338] As an embodiment, the second node in the present application includes the gNB 203.

[0339] As an embodiment, the UE 201 includes a mobile phone.

[0340] As an embodiment, the UE 201 is a vehicle including a car.

[0341] As an embodiment, the gNB 203 is a macro cell base station.

[0342] As an embodiment, the gNB 203 is a micro cell base station.

[0343] As an embodiment, the gNB 203 is a pico cell base station.

[0344] As an embodiment, the gNB 203 is a home base station (Femtocell).

[0345] As an embodiment, the gNB 203 is a base station device that supports a large delay difference.

[0346] As an embodiment, the gNB 203 is a flying platform device.

[0347] As an embodiment, the gNB 203 is a satellite device.

[0348] As an embodiment, the gNB 203 is a test device (e.g., a transceiver that simulates some functions of a base station, a signaling tester).

[0349] As an embodiment, the wireless link from the UE 201 to the gNB 203 is an uplink, and the uplink is used to perform uplink transmission.

[0350] As an embodiment, the wireless link from the gNB 203 to the UE 201 is a downlink, and the downlink is used to perform downlink transmission.

[0351] As an embodiment, the wireless link between the UE 201 and the gNB 203 includes a cellular network link.

[0352] As an embodiment, the UE 201 and the gNB 203 are connected via a Uu air interface.

[0353] As an embodiment, the sender of the first reference signal includes the gNB 203.

[0354] As an embodiment, the candidate sender of the first reference signal includes the gNB 203.

[0355] As an embodiment, the receiver of the first reference signal includes the UE 201.

[0356] As an embodiment, the sender of the target signal includes the UE 201.

[0357] As an embodiment, the receiver of the target signal includes the gNB 203.

[0358] As an embodiment, the UE 201 supports RIS (Reconfigurable Intelligent Surface).

[0359] As an embodiment, the gNB 203 supports RIS.

[0360] Example 3

[0361] 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 the attached figure. Figure 3 shown.

[0362] Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture of the control plane 300 for a first communication node device (RSU (Road Side Unit) in UE or V2X (Vehicle to Everything), vehicle-mounted device or vehicle-mounted communication module) and a second node device (gNB, RSU in UE or V2X, vehicle-mounted device or vehicle-mounted communication module), or between two UEs is presented in three layers: Layer 1 (Layer 1, L1), Layer 2 (Layer 2, L2) and Layer 3 (Layer 3, L3). L1 is the lowest layer and implements various PHY (PHYsical layer) signal processing functions. L1 will be referred to as PHY 301 in this article. L2305 is above PHY 301 and is responsible for the link between the first node device and the second node device, or between two UEs through PHY 301. L2305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second 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 inter-zone mobility support for the first communication node device between the second communication node device. 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 caused by 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 communication node device and the second communication node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in L2355, the RLC sublayer 353 in L2355, and the MAC sublayer 352 in L2355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. L2355 in the user plane 350 also includes a SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support business diversity. Although not shown in the figure, the first communication node device may have several upper layers above L2355, including a network layer (e.g., IP (Internet Protocol) layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, a server, etc.).

[0363] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0364] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0365] As an embodiment, the target signal is generated by the PHY 301 or the PHY 351 .

[0366] As an embodiment, the first reference signal is generated by the PHY301 or PHY351.

[0367] As an embodiment, the first signaling is generated at the MAC layer.

[0368] As an embodiment, the first signaling is generated at the RRC layer.

[0369] As an embodiment, the higher layer in the present application refers to a layer above the physical layer.

[0370] As an embodiment, the higher layer in the present application includes a MAC layer.

[0371] As an embodiment, the higher layer in the present application includes an RRC layer.

[0372] Example 4

[0373] 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 the attached figure. Figure 4 Attached 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.

[0374] The first communication 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 .

[0375] 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.

[0376] In transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of L2. 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 communication 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 communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for L1 (i.e., physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication 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-PSK, 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 precoding and non-codebook-based precoding and beamforming processing, 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., pilot) in the time domain and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs a transmit analog precoding / beamforming operation 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, and then provides it to different antennas 420.

[0377] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream and provides it to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of L1. The multi-antenna receiving processor 458 performs a receiving analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receiver 454. The receiving processor 456 uses a fast Fourier transform (Fast Fourier Transform, FFT) to convert the baseband multi-carrier symbol stream after the receiving analog precoding / beamforming operation from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiving processor 456, where the reference signal will be used for channel estimation, and the data signal is recovered after multi-antenna detection in the multi-antenna receiving processor 458 to any parallel stream with the second communication device 450 as the destination. The symbols on each parallel stream are demodulated and recovered in the receiving processor 456, and soft decisions are generated. The receiving 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 the functions of L2. The controller / processor 459 may be associated with a memory 460 storing program codes and data. The memory 460 may be referred to as a computer-readable medium. In DL, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between transmission and logical channels to recover the 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 confirmation (ACKnowledgement, ACK) and / or negative confirmation (NegativeACKnowledgement, NACK) protocols to support HARQ operations.

[0378] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above L2. Similar to the transmission function at the first communication device 410 described in 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 communication device 410, and implements L2 functions for 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 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 precoding and non-codebook-based precoding, and beamforming processing. Then, the transmit processor 468 modulates the generated parallel stream into a multi-carrier / single-carrier symbol stream, which is then provided to different antennas 452 via the transmitter 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, and then provides it to the antenna 452.

[0379] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the reception function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a radio frequency signal through its corresponding antenna 420, converts the received radio frequency signal into a baseband signal, and provides the baseband signal to the multi-antenna reception processor 472 and the reception processor 470. The reception processor 470 and the multi-antenna reception processor 472 jointly implement the functions of L1. The controller / processor 475 implements the L2 functions. The controller / processor 475 can be associated with a memory 476 storing program codes and data. The memory 476 can be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between transmission and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover the upper layer data packets from the second communication device 450. The upper layer data packets from the controller / processor 475 can 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.

[0380] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 450 device at least receives a first reference signal; sends a target signal for random access; the air interface resource of the target signal is associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used for the transmission of the target signal depends on the first reference signal.

[0381] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: receiving a first reference signal; and sending a target signal for random access.

[0382] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory includes computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least sends a first reference signal; receives a target signal for random access; the recipient of the first reference signal includes a second communication device; the air interface resource of the target signal is associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used by the second communication device 450 for the transmission of the target signal depends on the first reference signal.

[0383] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates actions when executed by at least one processor, and the actions include: sending a first reference signal; receiving a target signal for random access.

[0384] As an embodiment, the first node in the present application includes the second communication device 450.

[0385] As an embodiment, the second node in the present application includes the first communication device 410.

[0386] 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 a first reference signal; 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 a first reference signal.

[0387] 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 target signal for random access; 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 target signal for random access.

[0388] 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 a 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 a first signaling.

[0389] Example 5

[0390] Embodiment 5 illustrates a first flow chart of transmission between a first node and a second node according to an embodiment of the present application. Figure 5 In the embodiment, the first node U1 communicates with the second node N2 via a wireless link. It is particularly noted that the order in this embodiment does not limit the signal transmission order and implementation order in this application. In the absence of conflict, the embodiments, sub-embodiments and subsidiary embodiments in Embodiment 5 can be applied to Embodiment 6 and Embodiment 7; conversely, in the absence of conflict, any embodiment, sub-embodiment and subsidiary embodiment in Embodiment 6 and Embodiment 7 can be applied to Embodiment 5.

[0391] For the first node U1, a first reference signal is received in step S510; and a target signal is sent for random access in step S511.

[0392] For the second node N2, a first reference signal is sent in step S520; and a target signal for random access is received in step S521.

[0393] In Embodiment 5, the air interface resources of the target signal are associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used by the first node U1 for sending the target signal depends on the first reference signal.

[0394] As an embodiment, the first node U1 is the first node in this application.

[0395] As an embodiment, the second node N2 is the second node in the present application.

[0396] As an embodiment, the air interface between the second node N2 and the first node U1 includes a wireless interface between a base station device and a user equipment.

[0397] As an embodiment, the air interface between the second node N2 and the first node U1 includes a wireless interface between a relay node device and a user equipment.

[0398] As an embodiment, the air interface between the second node N2 and the first node U1 includes a wireless interface between user equipments.

[0399] As an embodiment, the second node N2 is a base station maintaining a service cell of the first node U1.

[0400] As an embodiment, step S510 is before step S511; step S520 is before step S521.

[0401] As an embodiment, the physical layer channel occupied by the target signal includes PRACH.

[0402] Example 6

[0403] Embodiment 6 illustrates a second flow chart of transmission between a first node and a second node according to an embodiment of the present application. Figure 6 In the embodiment, the first node U3 and the second node N4 communicate via a wireless link. It is particularly noted that the order in this embodiment does not limit the signal transmission order and implementation order in this application. In the absence of conflict, the embodiments, sub-embodiments and subsidiary embodiments in Embodiment 6 can be applied to Embodiment 5 and Embodiment 7; conversely, in the absence of conflict, any embodiment, sub-embodiment and subsidiary embodiment in Embodiment 5 and Embodiment 7 can be applied to Embodiment 6.

[0404] For the first node U3, a first reference signal is selected from candidates for the first reference signal in step S630.

[0405] For the second node N4, a candidate for the first reference signal is sent in step S640.

[0406] In Embodiment 6, the reception quality of the first reference signal is not lower than or higher than a first threshold.

[0407] As an embodiment, the first node U3 is the first node in this application.

[0408] As an embodiment, the second node N4 is the second node in this application.

[0409] As an embodiment, the air interface between the second node N4 and the first node U3 includes a wireless interface between a base station device and a user equipment.

[0410] As an embodiment, the air interface between the second node N4 and the first node U3 includes a wireless interface between a relay node device and a user equipment.

[0411] As an embodiment, the air interface between the second node N4 and the first node U3 includes a wireless interface between user equipments.

[0412] As an embodiment, the second node N4 is a base station maintaining a service cell of the first node U3.

[0413] As an embodiment, the step S640 includes receiving a candidate for the first reference signal.

[0414] As an embodiment, the step S640 includes receiving at least part of the candidates for the first reference signal.

[0415] As an embodiment, the step S640 includes receiving at least a first reference signal among candidates of the first reference signal.

[0416] As an embodiment, the step S640 includes receiving the first reference signal.

[0417] As an embodiment, at least one reference signal among the candidates of the first reference signal is used to cover the second node N4.

[0418] As an embodiment, at least one reference signal among the candidates of the first reference signal is used to maintain coverage of the service cell of the first node U3.

[0419] As an embodiment, any one of the candidates of the first reference signal is used to cover the second node N4.

[0420] As an embodiment, any one of the candidate reference signals of the first reference signal is used to maintain the coverage of the service cell of the first node U3.

[0421] As an embodiment, the reception quality of the first reference signal is not lower than or higher than a first threshold.

[0422] As an embodiment, the reception quality of the first reference signal is higher than a first threshold.

[0423] As an embodiment, the reception quality of the first reference signal is not lower than a first threshold.

[0424] As an embodiment, the reception quality in the present application includes RSRP.

[0425] As an embodiment, the reception quality in the present application includes RSRQ.

[0426] As an embodiment, the reception quality in the present application includes RSSI.

[0427] As an embodiment, the reception quality in the present application includes BLER.

[0428] As an embodiment, the reception quality in the present application includes SINR.

[0429] As an embodiment, the first threshold is an integer.

[0430] As an embodiment, the first threshold is fixed.

[0431] As an embodiment, the first threshold is predefined.

[0432] As an embodiment, the first threshold is preconfigured.

[0433] As an embodiment, the first threshold is configurable.

[0434] As an embodiment, the first threshold is configured by RRC (Radio Resource Control) signaling.

[0435] As an embodiment, the first reference signal is a reference signal with the best reception quality among the candidates of the first reference signal.

[0436] As an embodiment, the first reference signal is any reference signal among the candidates of the first reference signal whose reception quality is higher than the first threshold.

[0437] As an embodiment, the first reference signal is any reference signal among the candidates of the first reference signal whose reception quality is not lower than the first threshold.

[0438] As an embodiment, the first node selects the first reference signal from the candidates of the first reference signal by itself.

[0439] As an embodiment, the first node randomly selects the first reference signal from the candidates of the first reference signals whose reception quality is higher than the first threshold.

[0440] As an embodiment, the first node randomly selects the first reference signal from the candidates of the first reference signals whose reception quality is not lower than the first threshold.

[0441] As an embodiment, the first node selects the first reference signal from the candidates of the first reference signals having reception quality higher than the first threshold with equal probability.

[0442] As an embodiment, the first node selects the first reference signal from the candidates of the first reference signals whose reception quality is not lower than the first threshold with equal probability.

[0443] As an embodiment, the first node selects a reference signal with the best reception quality from the candidates of the first reference signals whose reception quality is higher than the first threshold.

[0444] As a sub-embodiment of this embodiment, the first reference signal is a reference signal with the best reception quality among the candidates of the first reference signals that are higher than the first threshold.

[0445] As an embodiment, the first node selects a reference signal with the best reception quality from the candidates of the first reference signals whose reception quality is not lower than the first threshold.

[0446] As a sub-embodiment of this embodiment, the first reference signal is a reference signal with the best reception quality among the candidates of the first reference signals that are not lower than the first threshold.

[0447] As an embodiment, the first node implements correlation-based selection of the first reference signal from the candidates of the first reference signal.

[0448] As an embodiment, the step S630 includes the step S510 described in Embodiment 5 of the present application.

[0449] As an embodiment, the step S640 includes the step S520 described in Embodiment 5 of the present application.

[0450] Example 7

[0451] Embodiment 7 illustrates a third flow chart of transmission between a first node and a second node according to an embodiment of the present application. Figure 7 In the embodiment, the first node U5 communicates with the second node N6 via a wireless link. It is particularly noted that the order in this embodiment does not limit the signal transmission order and implementation order in this application. In the absence of conflict, the embodiments, sub-embodiments and subsidiary embodiments in Embodiment 7 can be applied to Embodiment 5 and Embodiment 6; conversely, in the absence of conflict, any embodiment, sub-embodiment and subsidiary embodiment in Embodiment 5 and Embodiment 6 can be applied to Embodiment 7.

[0452] For the first node U5, the first signaling is received in step S750.

[0453] For the second node N6, a first signaling is sent in step S760.

[0454] In embodiment 7, for each reference signal in the target reference signal set, the first signaling indicates an accompanying reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding accompanying reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

[0455] As an embodiment, the first node U5 is the first node in this application.

[0456] As an embodiment, the second node N6 is the second node in this application.

[0457] As an embodiment, the air interface between the second node N6 and the first node U5 includes a wireless interface between a base station device and a user equipment.

[0458] As an embodiment, the air interface between the second node N6 and the first node U5 includes a wireless interface between a relay node device and a user equipment.

[0459] As an embodiment, the air interface between the second node N6 and the first node U5 includes a wireless interface between user equipments.

[0460] As an embodiment, the second node N6 is a base station maintaining a service cell of the first node U5.

[0461] As an embodiment, the first signaling is broadcast.

[0462] As an embodiment, the first signaling is non-unicast.

[0463] As an embodiment, the first signaling is periodic.

[0464] As an embodiment, the first signaling is cell common.

[0465] As an embodiment, the first signaling is cell specific.

[0466] As an embodiment, the first signaling includes higher layer information or higher layer parameter configuration.

[0467] As an embodiment, the first signaling includes SIB.

[0468] As an embodiment, the first signaling includes SIB1.

[0469] As an embodiment, the first signaling includes RMSI (Remaining Minimum System Information).

[0470] As an embodiment, the first signaling includes part or all of the fields included in a SIB.

[0471] As an embodiment, the first signaling includes part or all of the fields of servingCellConfigCommon IE.

[0472] As an embodiment, the first signaling includes part or all of the fields of servingCellConfigCommonSIB IE.

[0473] As an embodiment, the first signaling includes part or all of the fields of CellGroupConfigIE.

[0474] As an embodiment, the name of the first signaling includes "serving".

[0475] As an embodiment, the name of the first signaling includes "cell".

[0476] As an embodiment, the name of the first signaling includes "SIB".

[0477] As an embodiment, the name of the first signaling includes “ssb”. As an embodiment, the name of the first signaling includes “RIS”.

[0478] As an embodiment, the name of the first signaling includes "follow".

[0479] As an embodiment, the name of the first signaling includes "pair".

[0480] As an embodiment, the first signaling indicates the target reference signal set.

[0481] As an embodiment, the first signaling explicitly indicates the target reference signal set.

[0482] As an embodiment, the first signaling implicitly indicates the target reference signal set.

[0483] As an embodiment, the first signaling explicitly indicates a companion reference signal for each reference signal in the target reference signal set.

[0484] As an embodiment, the first signaling explicitly indicates the target reference signal set and the accompanying reference signal of each reference signal in the target reference signal set. As an embodiment, the explicit indication includes direct indication.

[0485] As an embodiment, the explicit indication includes direct indication through a bit field.

[0486] As an embodiment, the implicit indication includes indirect indication.

[0487] As an embodiment, the implicit indication includes indirect indication by indicating other IEs.

[0488] As an embodiment, step S750 is performed before step S510 in embodiment 5 of the present application.

[0489] As an embodiment, step S760 is performed before step S520 in embodiment 5 of the present application.

[0490] As an embodiment, step S750 is performed after step S510 described in embodiment 5 of the present application and before step S511 described in embodiment 5 of the present application.

[0491] As an embodiment, step S760 is performed after step S520 described in embodiment 5 of the present application and before step S521 described in embodiment 5 of the present application.

[0492] As an embodiment, step S750 is performed before step S630 described in embodiment 6 of the present application.

[0493] As an embodiment, step S760 is performed before step S640 described in embodiment 6 of the present application.

[0494] As an embodiment, step S750 is performed after step S630 described in embodiment 6 of the present application.

[0495] As an embodiment, step S760 is performed after step S640 described in embodiment 6 of the present application.

[0496] As an embodiment, the first signaling is transmitted on a downlink physical data channel (ie, a downlink channel that can be used to carry physical layer data).

[0497] As an embodiment, the physical layer channel occupied by the first signaling includes PDSCH (Physical Downlink Shared CHannel, physical downlink shared channel).

[0498] As an embodiment, the transmission channel corresponding to the first signaling includes DL-SCH (Down Link-Shared CHannel, uplink shared channel).

[0499] As an embodiment, the logical channel corresponding to the first signaling includes BCCH (Broadcast Channel).

[0500] Example 8

[0501] Embodiment 8 illustrates a schematic diagram of candidates for the first reference signal according to an embodiment of the present application, as shown in the attached figure. Figure 8 As shown in the attached Figure 8 , a rectangle represents a reference signal; wherein a cross-filled rectangle represents a reference signal in a first reference subset, and a gray solid-filled rectangle represents a reference signal in a second reference signal subset; a first candidate reference signal is any reference signal in the first reference signal subset, and a second candidate reference signal is any reference signal in the second reference signal subset; it is worth noting that the accompanying drawings are only for illustrative purposes and do not indicate the number of reference signals respectively included in the first reference signal candidate, the first reference signal subset, and the second reference signal subset during the implementation process.

[0502] In Embodiment 8, when the first reference signal is a first candidate reference signal, the measurement of the first reference signal is used for sending the target signal; when the first reference signal is a second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal.

[0503] As an embodiment, when the first reference signal is a first candidate reference signal, the measurement of the first reference signal is used for sending the target signal; when the first reference signal is a second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the first candidate reference signal is any reference signal in a first reference signal subset, and the second candidate reference signal is any reference signal in a second reference signal subset.

[0504] As an embodiment, the first reference signal subset includes at least one reference signal.

[0505] As an embodiment, the first reference signal subset includes one reference signal.

[0506] As an embodiment, the first reference signal subset includes multiple reference signals.

[0507] As an embodiment, the first reference signal subset includes M1 reference signals, and the first candidate reference signal is one of the M1 reference signals.

[0508] As a sub-embodiment of this embodiment, M1 is equal to 1.

[0509] As a sub-embodiment of this embodiment, M1 is a positive integer greater than 1.

[0510] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals is a CSI-RS or an SSB.

[0511] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals is a CSI-RS.

[0512] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals occupies one CSI-RS resource.

[0513] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals occupies one NZP CSI-RS resource.

[0514] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals occupies a CSI-RS resource set.

[0515] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals occupies one NZP CSI-RS resource set.

[0516] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals is SSB.

[0517] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals corresponds to an RS resource identity.

[0518] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals corresponds to one NZP-CSI-RS-ResourceId.

[0519] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals corresponds to an SSB-Index.

[0520] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals corresponds to an ssb-Index.

[0521] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals corresponds to an RS resource set identity.

[0522] As a sub-embodiment of this embodiment, at least one reference signal among the M1 reference signals corresponds to one NZP-CSI-RS-ResourceSetId.

[0523] As a sub-embodiment of this embodiment, the M1 reference signals are all CSI-RS or are all SSB.

[0524] As a sub-embodiment of this embodiment, the M1 reference signals are all CSI-RS.

[0525] As a sub-embodiment of this embodiment, the M1 reference signals respectively occupy M1 CSI-RS resources.

[0526] As a sub-embodiment of this embodiment, the M1 reference signals respectively occupy M1 NZP CSI-RS resources.

[0527] As a sub-embodiment of this embodiment, the M1 reference signals occupy one CSI-RS resource set.

[0528] As a sub-embodiment of this embodiment, the M1 reference signals occupy one NZP CSI-RS resource set.

[0529] As a sub-embodiment of this embodiment, the M1 reference signals are all SSB.

[0530] As a sub-embodiment of this embodiment, the M1 reference signals belong to one SSB burst.

[0531] As a sub-embodiment of this embodiment, the M1 reference signals correspond to M1 RS resource identities respectively.

[0532] As a sub-embodiment of this embodiment, the M1 reference signals correspond to M1 NZP-CSI-RS-ResourceIds respectively.

[0533] As a sub-embodiment of this embodiment, the M1 reference signals correspond to M1 SSB-Index respectively.

[0534] As a sub-embodiment of this embodiment, the M1 reference signals correspond to M1 ssb-Index respectively.

[0535] As a sub-embodiment of this embodiment, the M1 reference signals respectively correspond to an NZP CSI-RS resource set identity.

[0536] As a sub-embodiment of this embodiment, the M1 reference signals each correspond to an NZP-CSI-RS-ResourceSetId.

[0537] As an embodiment, the second reference signal subset includes at least one reference signal.

[0538] As an embodiment, the second reference signal subset includes one reference signal.

[0539] As an embodiment, the second reference signal subset includes multiple reference signals.

[0540] As an embodiment, the second reference signal subset includes N1 reference signals, and the second candidate reference signal is one of the N1 reference signals.

[0541] As a sub-embodiment of this embodiment, N1 is equal to 1.

[0542] As a sub-embodiment of this embodiment, N1 is a positive integer greater than 1.

[0543] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals is a CSI-RS or an SSB.

[0544] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals is a CSI-RS.

[0545] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals occupies one CSI-RS resource.

[0546] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals occupies one NZP CSI-RS resource.

[0547] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals occupies a CSI-RS resource set.

[0548] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals occupies one NZP CSI-RS resource set.

[0549] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals is SSB.

[0550] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals corresponds to an RS resource identity.

[0551] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals corresponds to one NZP-CSI-RS-ResourceId.

[0552] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals corresponds to an SSB-Index.

[0553] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals corresponds to an ssb-Index.

[0554] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals corresponds to an RS resource set identity.

[0555] As a sub-embodiment of this embodiment, at least one reference signal among the N1 reference signals corresponds to one NZP-CSI-RS-ResourceSetId.

[0556] As a sub-embodiment of this embodiment, the N1 reference signals are all CSI-RS or are all SSB.

[0557] As a sub-embodiment of this embodiment, the N1 reference signals are all CSI-RS.

[0558] As a sub-embodiment of this embodiment, the N1 reference signals occupy N1 CSI-RS resources respectively.

[0559] As a sub-embodiment of this embodiment, the N1 reference signals respectively occupy N1 NZP CSI-RS resources.

[0560] As a sub-embodiment of this embodiment, the N1 reference signals occupy one CSI-RS resource set.

[0561] As a sub-embodiment of this embodiment, the N1 reference signals occupy one NZP CSI-RS resource set.

[0562] As a sub-embodiment of this embodiment, the N1 reference signals are all SSB.

[0563] As a sub-embodiment of this embodiment, the N1 reference signals belong to one SSB burst.

[0564] As a sub-embodiment of this embodiment, the N1 reference signals correspond to N1 RS resource identities respectively.

[0565] As a sub-embodiment of this embodiment, the N1 reference signals correspond to N1 NZP-CSI-RS-ResourceIds respectively.

[0566] As a sub-embodiment of this embodiment, the N1 reference signals correspond to N1 SSB-Index respectively.

[0567] As a sub-embodiment of this embodiment, the N1 reference signals correspond to N1 ssb-Index respectively.

[0568] As a sub-embodiment of this embodiment, the N1 reference signals correspond to one NZP CSI-RS resource set identity.

[0569] As a sub-embodiment of this embodiment, the N1 reference signals correspond to one NZP-CSI-RS-ResourceSetId.

[0570] As an embodiment, the first reference signal belongs to the first reference signal subset.

[0571] As an embodiment, the first reference signal belongs to the second reference signal subset.

[0572] As an embodiment, the first reference signal belongs to the first reference signal subset or the second reference signal subset.

[0573] As an embodiment, the reference signals included in the first reference signal subset and the reference signals included in the second reference signal subset are orthogonal.

[0574] As an embodiment, the reference signals included in the first reference signal subset and the reference signals included in the second reference signal subset do not overlap.

[0575] As an embodiment, the candidates for the first reference signal include the first reference signal subset.

[0576] As an embodiment, the candidates for the first reference signal only include a subset of the first reference signals.

[0577] As an embodiment, the candidates for the first reference signal include K1 reference signals, and K1 is equal to M1.

[0578] As an embodiment, the candidates for the first reference signal include a subset of the second reference signal.

[0579] As an embodiment, the candidates for the first reference signal only include a subset of the second reference signals.

[0580] As an embodiment, the candidates for the first reference signal include K1 reference signals, and the K1 is equal to the N1.

[0581] As an embodiment, the candidates for the first reference signal include the first reference signal subset and the second reference signal subset.

[0582] As an embodiment, the candidates for the first reference signal consist of the first reference signal subset and the second reference signal subset.

[0583] As an embodiment, the candidates for the first reference signal include K1 reference signals, and K1 is equal to the sum of M1 and N1.

[0584] As an embodiment, the candidate reference signals in the first reference signal subset are used to maintain uplink related transmission of the base station.

[0585] As an embodiment, the candidate reference signals in the first reference signal subset are used simultaneously to maintain downlink coverage and uplink related transmission.

[0586] As an embodiment, the candidate reference signals in the second reference signal subset are used to maintain downlink coverage.

[0587] As an embodiment, the candidate reference signals in the second reference signal subset are only used to maintain downlink coverage.

[0588] As an embodiment, the uplink related transmission described in the present application includes: determining the uplink transmission timing.

[0589] As an embodiment, the uplink related transmission described in the present application includes: determining the spatial filtering used for uplink transmission.

[0590] As an embodiment, the uplink related transmission described in the present application includes: determining a spatial transmission parameter (Spatial Tx parameter) used for uplink transmission.

[0591] As an embodiment, the uplink related transmission described in the present application includes: determining the spatial reference relationship adopted for uplink transmission.

[0592] As an embodiment, the uplink related transmission in the present application includes: determining the path loss (PathLoss, PL) referenced by the uplink transmission power.

[0593] As an embodiment, maintaining downlink coverage described in the present application includes: being used for downlink synchronization.

[0594] As an embodiment, maintaining downlink coverage described in the present application includes: being used for cell selection or reselection.

[0595] As an embodiment, maintaining downlink coverage described in the present application includes: being used for BLF.

[0596] As an embodiment, maintaining downlink coverage described in the present application includes: being used for LinkRecoveryProcedure.

[0597] As an embodiment, maintaining downlink coverage described in the present application includes: being used for RLF.

[0598] As an embodiment, maintaining downlink coverage described in the present application includes: being used for RRM.

[0599] As an embodiment, maintaining downlink coverage described in the present application includes: being used for RLM.

[0600] As an embodiment, maintaining downlink coverage described in the present application includes: being used for beam management.

[0601] As an embodiment, maintaining downlink coverage described in the present application includes: being used for mobility management.

[0602] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that the measurement of the first reference signal is used to determine the downlink timing, and the downlink timing is used to determine the sending timing of the target signal.

[0603] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that the measurement of the first reference signal is used to determine spatial domain filtering of the target signal.

[0604] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that the measurement of the first reference signal is used to determine the UL TX Spatial Filter (uplink transmit spatial filter) of the target signal.

[0605] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that: the measurement of the first reference signal is used to determine the spatial transmission parameters of the target signal.

[0606] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that: a spatial reception parameter (Spatial Rx parameter) on the first reference signal is used to determine a spatial transmission parameter of the target signal.

[0607] As an embodiment, the spatial reception parameters described in the present application include at least one of a reception beam, a reception analog beamforming matrix, a reception analog beamforming vector, a reception beamforming matrix, a reception beamforming vector or a spatial domain reception filter.

[0608] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that the first node sends the target signal according to (according to) the spatial relationship reference (with reference to) the first reference signal.

[0609] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that: the measurement of the first reference signal is used to determine the transmission power value of the target signal.

[0610] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that: the PathLoss determined by the measurement of the first reference signal is used to determine the transmission power value of the target signal.

[0611] As an embodiment, the feature "the measurement of the first reference signal is not used for sending the target signal" means that the measurement of the first reference signal is not used to determine the sending timing of the target signal.

[0612] As an embodiment, the feature "the measurement of the first reference signal is not used for sending the target signal" means that the measurement of the first reference signal is not used to determine the spatial domain filtering of the target signal.

[0613] As an embodiment, the feature "the measurement of the first reference signal is not used for sending the target signal" means that the measurement of the first reference signal is not used to determine the spatial transmission parameters of the target signal.

[0614] As an embodiment, the feature “the measurement of the first reference signal is not used for sending the target signal” means that: the measurement of the first reference signal is not used to determine the ULTX Spatial Filter of the target signal.

[0615] As an embodiment, the feature "the measurement of the first reference signal is used for sending the target signal" means that: the spatial reception parameters on the first reference signal are not used to determine the spatial transmission parameters of the target signal.

[0616] As an embodiment, the feature "the measurement of the first reference signal is not used for sending the target signal" means that the spatial relationship reference according to which the first node sends the target signal is not the first reference signal.

[0617] As an embodiment, the feature "the measurement of the first reference signal is not used for sending the target signal" means that the measurement of the first reference signal is not used to determine the transmission power value of the target signal.

[0618] As an embodiment, the feature "the measurement of the first reference signal is not used for sending the target signal" means that the PathLoss determined by the measurement of the first reference signal is not used to determine the transmission power value of the target signal.

[0619] As an embodiment, the first signaling in the present application implicitly indicates a reference signal in the first reference signal subset.

[0620] As a sub-embodiment of this embodiment, the first reference signal subset includes reference signals among the candidates of the first reference signals that are not indicated by the first signaling.

[0621] As an embodiment, the first signaling in the present application implicitly indicates a reference signal in the second reference signal subset.

[0622] As an embodiment, the first signaling in the present application explicitly indicates the reference signal in the second reference signal subset.

[0623] As an embodiment, the first signaling in the present application indicates a companion reference signal for each reference signal in the second reference signal subset.

[0624] As a sub-embodiment of this embodiment, when the first reference signal is the second candidate reference signal, measurement of a companion reference signal of the second candidate reference signal is used for sending the target signal.

[0625] Example 9

[0626] Embodiment 9 illustrates a schematic diagram of a target reference signal set and a companion reference signal according to an embodiment of the present application, as shown in the attached figure. Figure 7 As shown in the attached Fig. 9 In the figure, a rectangle represents a reference signal; wherein a rectangle filled with vertical lines represents a reference signal in a target reference resource set, and a rectangle filled with solid white represents a reference signal in a candidate of a first reference signal other than a reference signal in the target reference signal set; a rectangle filled with horizontal lines represents an accompanying reference signal for indicating each reference signal in the target reference resource set; it is worth noting that the accompanying reference signal is only an illustrative example and does not indicate the number of reference signals respectively included in the candidate of the first reference signal, the target reference signal set and the accompanying reference signal for indicating each reference signal in the target reference resource set during the implementation process.

[0627] In Example 7, for each reference signal in the target reference signal set, the first signaling in the present application indicates a companion reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding companion reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

[0628] As an embodiment, for each reference signal in the target reference signal set, the first signaling in the present application indicates an accompanying reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding accompanying reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

[0629] As an embodiment, the target reference signal set includes at least one reference signal.

[0630] As an embodiment, the target reference signal set includes one reference signal.

[0631] As an embodiment, the target reference signal set includes multiple reference signals.

[0632] As an embodiment, the target reference signal set includes Y1 reference signals, where Y1 is a positive integer.

[0633] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals is a CSI-RS or an SSB.

[0634] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals is a CSI-RS.

[0635] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals occupies one CSI-RS resource.

[0636] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals occupies one NZP CSI-RS resource.

[0637] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals occupies a CSI-RS resource set.

[0638] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals occupies one NZP CSI-RS resource set.

[0639] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals is SSB.

[0640] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals corresponds to an RS resource identity.

[0641] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals corresponds to one NZP-CSI-RS-ResourceId.

[0642] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals corresponds to an SSB-Index.

[0643] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals corresponds to an ssb-Index.

[0644] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals corresponds to an RS resource set identity.

[0645] As a sub-embodiment of this embodiment, at least one reference signal among the Y1 reference signals corresponds to one NZP-CSI-RS-ResourceSetId.

[0646] As a sub-embodiment of this embodiment, the Y1 reference signals are all CSI-RS or are all SSB.

[0647] As a sub-embodiment of this embodiment, the Y1 reference signals are CSI-RS.

[0648] As a sub-embodiment of this embodiment, the Y1 reference signals respectively occupy Y1 CSI-RS resources.

[0649] As a sub-embodiment of this embodiment, the Y1 reference signals respectively occupy Y1 NZP CSI-RS resources.

[0650] As a sub-embodiment of this embodiment, the Y1 reference signals occupy one CSI-RS resource set.

[0651] As a sub-embodiment of this embodiment, the Y1 reference signals occupy one NZP CSI-RS resource set.

[0652] As a sub-embodiment of this embodiment, the Y1 reference signals are all SSB.

[0653] As a sub-embodiment of this embodiment, the Y1 reference signals belong to one SSB burst.

[0654] As a sub-embodiment of this embodiment, the Y1 reference signals correspond to Y1 RS resource identities respectively.

[0655] As a sub-embodiment of this embodiment, the Y1 reference signals correspond to Y1 NZP-CSI-RS-ResourceIds respectively.

[0656] As a sub-embodiment of this embodiment, the Y1 reference signals correspond to Y1 SSB-Index respectively.

[0657] As a sub-embodiment of this embodiment, the Y1 reference signals correspond to Y1 ssb-Index respectively.

[0658] As a sub-embodiment of this embodiment, the Y1 reference signals correspond to one NZP CSI-RS resource set identity.

[0659] As a sub-embodiment of this embodiment, the Y1 reference signals correspond to one NZP-CSI-RS-ResourceSetId.

[0660] As an embodiment, the target reference signal set belongs to the second reference signal subset in this application.

[0661] As an embodiment, the target reference signal set includes the second reference signal subset in the present application.

[0662] As an embodiment, the target reference signal set is the second reference signal subset in the present application.

[0663] As an embodiment, the companion reference signal is broadcast.

[0664] As an embodiment, the accompanying reference signal is non-unicast.

[0665] As an embodiment, the accompanying reference signal is a downlink reference signal.

[0666] As an embodiment, the first reference signal is a CSI-RS or SSB.

[0667] As an embodiment, one of the accompanying reference signals is a CSI-RS.

[0668] As an embodiment, one companion reference signal occupies one CSI-RS resource.

[0669] As an embodiment, one companion reference signal occupies one NZP CSI-RS resource.

[0670] As an embodiment, one companion reference signal occupies one CSI-RS resource.

[0671] As an embodiment, one companion reference signal occupies one NZP CSI-RS resource set.

[0672] As an embodiment, one of the accompanying reference signals is a SSB.

[0673] As an embodiment, one accompanying reference signal corresponds to one RS resource identity.

[0674] As an embodiment, one accompanying reference signal corresponds to one NZP-CSI-RS-ResourceId.

[0675] As an embodiment, one accompanying reference signal corresponds to one SSB-Index.

[0676] As an embodiment, one accompanying reference signal corresponds to one ssb-Index.

[0677] As an embodiment, one accompanying reference signal corresponds to one RS resource set identity.

[0678] As an embodiment, one accompanying reference signal corresponds to one NZP-CSI-RS-ResourceSetId.

[0679] As an embodiment, any reference signal in the target reference signal set is a target reference signal, the target reference signal is an SSB, and the accompanying reference signal of the target reference signal is a target accompanying reference signal, and the target accompanying reference signal is an SSB.

[0680] As an embodiment, any reference signal in the target reference signal set is a target reference signal, the target reference signal is an SSB, the accompanying reference signal of the target reference signal is a target accompanying reference signal, and the target accompanying reference signal is a CSI-RS.

[0681] As an embodiment, any reference signal in the target reference signal set is a target reference signal, the target reference signal is a CSI-RS, the accompanying reference signal of the target reference signal is a target accompanying reference signal, and the target accompanying reference signal is an SSB.

[0682] As an embodiment, any reference signal in the target reference signal set is a target reference signal, the target reference signal is a CSI-RS, the accompanying reference signal of the target reference signal is a target accompanying reference signal, and the target accompanying reference signal is a CSI-RS.

[0683] As an embodiment, the reference signals in the target reference signal set are only used to maintain downlink coverage.

[0684] As an embodiment, one of the accompanying reference signals is only used for uplink related transmission.

[0685] As an embodiment, the reference signals in the target reference signal set correspond one-to-one to the accompanying reference signals.

[0686] As an embodiment, each reference signal included in the target reference signal set and the corresponding companion reference signal are not QCL or cannot be assumed to be QCL.

[0687] As an embodiment, for any reference signal among the candidates of the first reference signal, when the accompanying reference signal indicated by the first signaling is QCL with this reference signal, the any reference signal belongs to the first reference signal subset; when the accompanying reference signal indicated by the first signaling is not QCL with this reference signal, the any reference signal does not belong to the first reference signal subset.

[0688] As a sub-embodiment of this embodiment, the advantages of the above method are: 1. Avoiding the use of additional signaling instructions to improve spectrum efficiency and save signaling overhead.

[0689] As an embodiment, all accompanying reference signals indicated by the first signaling in the present application constitute a third reference signal subset.

[0690] As a sub-embodiment of this embodiment, the reference signals in the third reference signal subset are not used to maintain downlink coverage.

[0691] As an embodiment, the third reference signal subset includes X1 companion reference signals, and X1 is equal to Y1 described in this application.

[0692] As a sub-embodiment of this embodiment, the candidates for the first reference signal do not include the accompanying reference signal included in the third reference signal subset.

[0693] As a sub-embodiment of this embodiment, there are two companion reference signals in the third reference signal subset that are not QCL or cannot be assumed to be QCL.

[0694] As a sub-embodiment of this embodiment, there are two accompanying reference signals in the third reference signal subset that are QCL or are assumed to be QCL.

[0695] As a sub-embodiment of this embodiment, any two companion reference signals in the third reference signal subset are not QCL or cannot be assumed to be QCL.

[0696] As a sub-embodiment of this embodiment, there is a companion reference signal in the third reference signal subset and one of the candidates for the first reference signal is QCL, or is assumed to be QCL.

[0697] As a sub-embodiment of this embodiment, any companion reference signal in the third reference signal subset and one of the candidates for the first reference signal is not QCL or cannot be assumed to be QCL.

[0698] Example 10

[0699] Embodiment 10 illustrates a schematic diagram of candidates and accompanying reference signals of a first reference signal according to an embodiment of the present application, as shown in the attached figure. Fig.10 As shown in the attached Fig.10 In the figure, a rectangle represents a reference signal; wherein a rectangle filled with vertical lines represents a reference signal in a target reference resource set, and a rectangle filled with solid white represents a reference signal in a candidate of a first reference signal other than a reference signal in the target reference signal set; a rectangle filled with horizontal lines represents an accompanying reference signal for indicating each reference signal in the target reference resource set; it is worth noting that the accompanying reference signal is only an illustrative example and does not indicate the number of reference signals respectively included in the candidate of the first reference signal, the target reference signal set and the accompanying reference signal for indicating each reference signal in the target reference resource set during the implementation process.

[0700] In embodiment 10, the candidates for the first reference signal and any of the accompanying reference signals are sent on one cell; at least some of the candidates for the first reference signal are used for cell selection or reselection, and there is at least one accompanying reference signal that cannot be used for cell selection or reselection.

[0701] As an embodiment, the candidates for the first reference signal and any of the accompanying reference signals are sent on one cell; at least some of the reference signals among the candidates for the first reference signal are used for cell selection or reselection, and there is at least one accompanying reference signal that cannot be used for cell selection or reselection.

[0702] As an embodiment, any reference signal among the candidates of the first reference signal is used to maintain downlink coverage.

[0703] As an embodiment, any reference signal among the candidates of the first reference signal is used for cell selection or reselection.

[0704] As an embodiment, any reference signal among the candidates of the first reference signal is used for downlink synchronization.

[0705] As an embodiment, any reference signal among the candidates of the first reference signal is used for BLF.

[0706] As an embodiment, any reference signal among the candidates of the first reference signal is used for Link Recovery Procedure.

[0707] As an embodiment, any reference signal among the candidates of the first reference signal is used for RLF.

[0708] As an embodiment, any reference signal among the candidates of the first reference signal is used for RRM.

[0709] As an embodiment, any reference signal among the candidates of the first reference signal is used for RLM.

[0710] As an embodiment, any reference signal among the candidates of the first reference signal is used for beam management.

[0711] As an embodiment, any reference signal among the candidates of the first reference signal is used for mobility management.

[0712] As an embodiment, at least part of the candidate reference signals of the first reference signal are only used to maintain downlink coverage.

[0713] As an embodiment, at least some of the candidate reference signals of the first reference signal are not used for uplink related transmission.

[0714] As an embodiment, at least some of the candidate reference signals of the first reference signal are not used to determine uplink transmission timing.

[0715] As an embodiment, at least part of the reference signals among the candidates of the first reference signal are not used to determine the spatial filtering adopted for uplink transmission.

[0716] As an embodiment, at least part of the reference signals among the candidates of the first reference signal are not used to determine the spatial transmission parameters adopted for uplink transmission.

[0717] As an embodiment, at least part of the reference signals among the candidates of the first reference signal are not used to determine the spatial reference relationship adopted for uplink transmission.

[0718] As an embodiment, at least part of the reference signals among the candidates of the first reference signal are not used for determining the path loss referred to by the uplink transmit power.

[0719] As an embodiment, the reference signals included in the target reference signal set described in the present application are only used to maintain downlink coverage.

[0720] As an embodiment, the reference signals included in the target reference signal set described in the present application are not used for uplink related transmission.

[0721] As an embodiment, the reference signals included in the target reference signal set described in the present application are not used to determine uplink transmission timing.

[0722] As an embodiment, the reference signals included in the target reference signal set described in the present application are not used to determine the spatial filtering adopted for uplink transmission.

[0723] As an embodiment, the reference signals included in the target reference signal set described in the present application are not used to determine the spatial transmission parameters adopted for uplink transmission.

[0724] As an embodiment, the reference signals included in the target reference signal set described in the present application are not used to determine the spatial reference relationship adopted for uplink transmission.

[0725] As an embodiment, the reference signals included in the target reference signal set described in the present application are not used to determine the path loss referenced by the uplink transmit power.

[0726] As an embodiment, the at least one accompanying reference signal is only used to maintain uplink related transmission.

[0727] As an embodiment, the at least one companion reference signal is not used to maintain downlink coverage.

[0728] As an embodiment, the at least one companion reference signal is not used for cell selection or reselection.

[0729] As an embodiment, the at least one accompanying reference signal is not used for downlink synchronization.

[0730] As an embodiment, the at least one companion reference signal is not used for BLF.

[0731] As an embodiment, the at least one companion reference signal is not used for LinkRecoveryProcedure.

[0732] As an embodiment, the at least one companion reference signal is not used for RLF.

[0733] As an embodiment, the at least one companion reference signal is not used for RRM.

[0734] As an embodiment, the at least one companion reference signal is not used for RLM.

[0735] As an embodiment, the at least one companion reference signal is not used for beam management.

[0736] As an embodiment, the at least one companion reference signal is not used for mobility management.

[0737] As an embodiment, any one of the accompanying reference signals is only used to maintain uplink related transmission.

[0738] As an embodiment, the accompanying reference signal in the third reference signal subset described in the present application is only used to maintain uplink related transmission.

[0739] As an embodiment, the candidate of the first reference signal and the accompanying reference signal in the third reference signal subset described in the present application are both sent on one cell.

[0740] As an embodiment, the behavior of "a reference signal is sent on a cell" means: using air interface resources of the cell to send the reference signal.

[0741] As an embodiment, the behavior of "a reference signal is sent on a cell" means: sending the reference signal in the air interface resources corresponding to the cell.

[0742] As an embodiment, the behavior of "a reference signal is sent on a cell" means: sending the reference signal in air interface resources configured for the cell.

[0743] As an embodiment, any companion reference signal of the at least one companion reference signal is not QCL with any reference signal of the candidates for the first reference signal, or cannot be assumed to be QCL.

[0744] As a sub-embodiment of this embodiment, the above method has the advantage that the reference signal used for uplink transmission is decoupled from the reference signal used for downlink coverage, which is more flexible.

[0745] As an embodiment, there is a companion reference signal among the at least one companion reference signal that is QCL to a reference signal among the candidates of the first reference signal.

[0746] Embodiment 11

[0747] Embodiment 11 illustrates a schematic diagram of a third reference signal according to an embodiment of the present application, as shown in the attached figure. Fig.11 As shown in the attached Fig.11In the figure, a rectangle represents a reference signal; wherein a cross-filled rectangle represents a reference signal in a first reference subset, a gray solid-filled rectangle represents a reference signal in a second reference signal subset, and a horizontal-line-filled rectangle represents the third reference signal; the second candidate reference signal is any reference signal in the second reference signal subset, and the first signaling in the present application indicates the third reference signal, and the third reference signal is an accompanying reference signal of the second candidate reference signal; it is worth noting that the accompanying drawings are only for illustrative purposes and do not indicate the number of reference signals respectively included in the first reference signal candidate, the first reference signal subset, and the second reference signal subset during the implementation process.

[0748] In Example 11, when the first reference signal is the second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the second candidate reference signal belongs to the target reference signal set, the first signaling indicates a third reference signal, and the third reference signal is a companion reference signal of the second candidate reference signal; the measurement of the third reference signal is used for sending the target signal.

[0749] As an embodiment, the third reference signal is broadcast.

[0750] As an embodiment, the third reference signal is non-unicast.

[0751] As an embodiment, the third reference signal is CSI-RS or SSB.

[0752] As an embodiment, the third reference signal is CSI-RS.

[0753] As an embodiment, the third reference signal occupies one CSI-RS resource.

[0754] As an embodiment, the third reference signal occupies one NZP CSI-RS resource.

[0755] As an embodiment, the third reference signal occupies a CSI-RS resource set.

[0756] As an embodiment, the third reference signal occupies an NZP CSI-RS resource set.

[0757] As an embodiment, the third reference signal is SSB.

[0758] As an embodiment, the third reference signal corresponds to an RS resource identity.

[0759] As an embodiment, the third reference signal corresponds to an NZP-CSI-RS-ResourceId.

[0760] As an embodiment, the third reference signal corresponds to an SSB-Index.

[0761] As an embodiment, the third reference signal corresponds to an ssb-Index.

[0762] As an embodiment, the third reference signal corresponds to an RS resource set identity.

[0763] As an embodiment, the third reference signal corresponds to an NZP-CSI-RS-ResourceSetId.

[0764] As an embodiment, the first reference signal and the third reference signal are different.

[0765] As an embodiment, the first reference signal and the third reference signal correspond to different CSI-RS resources respectively.

[0766] As an embodiment, the first reference signal and the third reference signal correspond to different NZP CSI-RS resources respectively.

[0767] As an embodiment, the first reference signal and the third reference signal correspond to different SSBs respectively.

[0768] As an embodiment, the first reference signal and the third reference signal correspond to different NZP-CSI-RS-ResourceIds respectively.

[0769] As an embodiment, the first reference signal and the third reference signal correspond to different SSB-Index respectively.

[0770] As an embodiment, the first reference signal and the third reference signal correspond to different ssb-Index respectively.

[0771] As an embodiment, the first reference signal and the third reference signal correspond to different TCI-States respectively.

[0772] As an embodiment, the first reference signal and the third reference signal correspond to different TCI-StateIds respectively.

[0773] As an embodiment, the meaning that the measurement of the third reference signal is used for sending the target signal includes: the measurement of the third reference signal is used to determine the sending timing of the target signal.

[0774] As an embodiment, the measurement of the third reference signal is used for sending the target signal, which means that the measurement of the third reference signal is used to determine downlink timing, and the downlink timing is used to determine the sending timing of the target signal.

[0775] As an embodiment, the meaning that the measurement of the third reference signal is used for sending the target signal includes: the measurement of the third reference signal is used to determine the timing advance (TA) of the target signal.

[0776] As an embodiment, the meaning that the measurement of the third reference signal is used for sending the target signal includes: the measurement of the third reference signal is used to determine the spatial transmission parameter of the target signal.

[0777] As an embodiment, the meaning that the measurement of the third reference signal is used for sending the target signal includes: the measurement of the third reference signal is used to determine spatial domain filtering of the target signal.

[0778] As an embodiment, the measurement of the third reference signal is used for sending the target signal, which means that the measurement of the third reference signal is used to determine a UL TX Spatial Filter of the target signal.

[0779] As an embodiment, the measurement of the third reference signal is used for sending the target signal, which means that the first node sends the target signal according to (according to) the spatial relationship reference (with reference to) the third reference signal.

[0780] As an embodiment, the meaning that the measurement of the third reference signal is used for sending the target signal includes: the measurement of the third reference signal is used to determine the transmission power value of the target signal.

[0781] As an embodiment, the measurement of the third reference signal is used for sending the target signal, which means that the PathLoss determined by the measurement of the third reference signal is used to determine the transmission power value of the target signal.

[0782] Example 12

[0783] Embodiment 12 illustrates a schematic diagram of a method for measuring a first reference signal according to an embodiment of the present application to be used for sending a target signal, as shown in the attached figure. Fig.12As shown in the attached Fig.12 In the embodiment, when the measurement of the first reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal, or the calculation of the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0784] In Embodiment 12, when the measurement of the first reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal, or the calculation of the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0785] As an embodiment, when the measurement for the first reference signal is used for the timing advance of the target signal, the measurement for the first reference signal is used for the sending of the target signal.

[0786] As an embodiment, when the measurement for the first reference signal is used for spatial filtering of the target signal, the measurement for the first reference signal is used for the sending of the target signal.

[0787] As an embodiment, when the measurement for the first reference signal is used for calculating the transmit power of the target signal, the measurement for the first reference signal is used for the transmission of the target signal.

[0788] As an embodiment, when the measurement for the first reference signal is used for timing advance of the target signal and spatial filtering of the target signal, the measurement for the first reference signal is used for the transmission of the target signal.

[0789] As an embodiment, when the measurement of the first reference signal is used for calculating the timing advance of the target signal and the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0790] As an embodiment, when the measurement of the first reference signal is used for spatial filtering of the target signal and calculation of the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0791] As an embodiment, when the measurement of the first reference signal is used for the timing advance of the target signal, the spatial filtering of the target signal and the calculation of the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0792] Example 13

[0793] Embodiment 13 illustrates a schematic diagram of a smart metasurface according to an embodiment of the present application, as shown in the attached Fig.13 As shown in the attached Fig.13 In the present application, the RIS refers to: Reconfigurable Intelligent Surface, reconfigurable intelligent super surface, the base station includes the second node in the present application; the terminal includes the first node in the present application.

[0794] As an embodiment, the transmission path of the first reference signal includes a link consisting of an incident link from the base station to the RIS and a reflected link from the RIS to the terminal.

[0795] As an embodiment, a transmission path of at least one reference signal among the candidates of the first reference signal includes a link consisting of an incident link from a base station to a RIS and a reflection link from a RIS to a terminal.

[0796] As an embodiment, the transmission path of the first reference signal includes a direct link from the base station to the terminal.

[0797] As an embodiment, a transmission path of at least one reference signal among the candidates of the first reference signal includes a direct link from a base station to a terminal.

[0798] As an embodiment, the transmission path of at least one reference signal among the candidates of the first reference signal includes a link consisting of an incident link from the base station to the RIS and a reflection link from the RIS to the terminal, and the transmission path of at least one reference signal among the candidates of the first reference signal includes a direct link from the base station to the terminal.

[0799] As an embodiment, the transmission path of at least one companion reference signal includes a link consisting of an incident link from the base station to the RIS and a reflected link from the RIS to the terminal.

[0800] As an embodiment, the transmission path of at least one accompanying reference signal includes a direct link from the base station to the terminal.

[0801] As an embodiment, the transmission path of at least one companion reference signal includes a link consisting of an incident link from the base station to the RIS and a reflected link from the RIS to the terminal.

[0802] As an embodiment, the transmission path of at least one accompanying reference signal includes a direct link from the base station to the terminal.

[0803] Embodiment 14

[0804] Embodiment 14 illustrates a structural block diagram of a processing device used in a first node according to an embodiment of the present application, as shown in the attached figure. Fig.14 As shown in the attached Fig.14 In the embodiment, the processing device 1400 in the first node includes a first receiver 1401 and a first transmitter 1402.

[0805] In Embodiment 14, the first receiver 1401 receives a first reference signal; and the first transmitter 1402 sends a target signal for random access.

[0806] In Embodiment 14, the air interface resources of the target signal are associated with the first reference signal, and candidates for the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used for sending the target signal depends on the first reference signal.

[0807] As an embodiment, when the first reference signal is a first candidate reference signal, the measurement of the first reference signal is used for sending the target signal; when the first reference signal is a second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the first candidate reference signal is any reference signal in a first reference signal subset, and the second candidate reference signal is any reference signal in a second reference signal subset.

[0808] As an embodiment, the first receiver 1401 receives a first signaling; for each reference signal in a target reference signal set, the first signaling indicates an accompanying reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding accompanying reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

[0809] As an embodiment, the candidates for the first reference signal and any of the accompanying reference signals are sent on one cell; at least some of the reference signals among the candidates for the first reference signal are used for cell selection or reselection, and there is at least one accompanying reference signal that cannot be used for cell selection or reselection.

[0810] As an embodiment, when the measurement of the first reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal, or the calculation of the transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

[0811] As an embodiment, the first receiver 1401 selects the first reference signal from the candidates of the first reference signals; the reception quality of the first reference signal is not lower than or higher than a first threshold.

[0812] As an embodiment, when the first reference signal is the second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the second candidate reference signal belongs to the target reference signal set, the first signaling indicates a third reference signal, and the third reference signal is a companion reference signal of the second candidate reference signal; the measurement of the third reference signal is used for sending the target signal.

[0813] As an embodiment, any two reference signals among the candidates of the first reference signal are not QCL or cannot be assumed to be QCL.

[0814] As an embodiment, the reference signals in the target reference signal set correspond one-to-one to the accompanying reference signals.

[0815] As an embodiment, each reference signal included in the target reference signal set and the corresponding companion reference signal are not QCL or cannot be assumed to be QCL.

[0816] As an embodiment, any companion reference signal of the at least one companion reference signal is not QCL with any reference signal of the candidates for the first reference signal, or cannot be assumed to be QCL.

[0817] As an embodiment, there is a companion reference signal among the at least one companion reference signal that is QCL to a reference signal among the candidates of the first reference signal.

[0818] As an embodiment, the candidate reference signals in the first reference signal subset are used to maintain uplink related transmission of the base station.

[0819] As an embodiment, the candidate reference signals in the first reference signal subset are used simultaneously to maintain downlink coverage and uplink related transmission.

[0820] As an embodiment, the candidate reference signals in the second reference signal subset are used to maintain downlink coverage.

[0821] As an embodiment, the candidate reference signals in the second reference signal subset are only used to maintain downlink coverage.

[0822] As an embodiment, the first node is user equipment.

[0823] As an embodiment, the first node is a relay node device.

[0824] As an embodiment, the first receiver 1401 includes at least one of {antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller / processor 459, memory 460, data source 467} in Embodiment 4.

[0825] As an embodiment, the first transmitter 1402 includes at least one of {antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, data source 467} in Embodiment 4.

[0826] Embodiment 15

[0827] Embodiment 15 illustrates a structural block diagram of a processing device used in a second node according to an embodiment of the present application, as shown in the attached Fig.15 As shown in the attached Fig.15 In the embodiment, the processing device 1500 in the second node includes a second transmitter 1501 and a second receiver 1502.

[0828] In Embodiment 15, the second transmitter 1501 sends a first reference signal; and the second receiver 1502 receives a target signal for random access.

[0829] In embodiment 15, the receiver of the first reference signal includes a first node; the air interface resources of the target signal are associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used by the first node for sending the target signal depends on the first reference signal.

[0830] As an embodiment, when the first reference signal is a first candidate reference signal, the measurement of the first reference signal is used by the first node for sending the target signal; when the first reference signal is a second candidate reference signal, the measurement of the first reference signal is not used by the first node for sending the target signal; the first candidate reference signal is any reference signal in a first reference signal subset, and the second candidate reference signal is any reference signal in a second reference signal subset.

[0831] As an embodiment, the second transmitter 1501 sends a first signaling; for each reference signal in a target reference signal set, the first signaling indicates an accompanying reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding accompanying reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

[0832] As an embodiment, the candidates for the first reference signal and any of the accompanying reference signals are sent on one cell; at least some of the reference signals among the candidates for the first reference signal are used for cell selection or reselection, and there is at least one accompanying reference signal that cannot be used for cell selection or reselection.

[0833] As an embodiment, when the measurement of the first reference signal is used for at least one of the timing advance of the target signal, the spatial filtering of the target signal, or the calculation of the transmit power of the target signal, the measurement of the first reference signal is used by the first node for the transmission of the target signal.

[0834] As an embodiment, the second transmitter 1501 sends the candidates for the first reference signal, and the first node selects the first reference signal from the candidates for the first reference signal; the reception quality of the first reference signal is not lower than or higher than a first threshold.

[0835] As an embodiment, when the first reference signal is the second candidate reference signal, the measurement of the first reference signal is not used by the first node for sending the target signal; the second candidate reference signal belongs to the target reference signal set, the first signaling indicates a third reference signal, and the third reference signal is a companion reference signal of the second candidate reference signal; the measurement of the third reference signal is used by the first node for sending the target signal.

[0836] As an embodiment, any two reference signals among the candidates of the first reference signal are not QCL or cannot be assumed to be QCL.

[0837] As an embodiment, the reference signals in the target reference signal set correspond one-to-one to the accompanying reference signals.

[0838] As an embodiment, each reference signal included in the target reference signal set and the corresponding companion reference signal are not QCL or cannot be assumed to be QCL.

[0839] As an embodiment, any companion reference signal of the at least one companion reference signal is not QCL with any reference signal of the candidates for the first reference signal, or cannot be assumed to be QCL.

[0840] As an embodiment, there is a companion reference signal among the at least one companion reference signal that is QCL to a reference signal among the candidates of the first reference signal.

[0841] As an embodiment, the candidate reference signals in the first reference signal subset are used to maintain uplink related transmission of the base station.

[0842] As an embodiment, the candidate reference signals in the first reference signal subset are used simultaneously to maintain downlink coverage and uplink related transmission.

[0843] As an embodiment, the candidate reference signals in the second reference signal subset are used to maintain downlink coverage.

[0844] As an embodiment, the candidate reference signals in the second reference signal subset are only used to maintain downlink coverage.

[0845] As an embodiment, the second node is a base station device.

[0846] As an embodiment, the second node is user equipment.

[0847] As an embodiment, the second node is a relay node device.

[0848] As an embodiment, the second node is a maintenance device of a serving cell.

[0849] As an embodiment, the second node is a serving cell maintaining device of the first node.

[0850] As an embodiment, the second transmitter 1501 includes at least one of {antenna 420, transmitter 418, transmit processor 416, multi-antenna transmit processor 471, controller / processor 475, memory 476} in Embodiment 4.

[0851] As an embodiment, the second receiver 1502 includes at least one of {antenna 420, receiver / 418, receiving processor 470, multi-antenna receiving processor 472, controller / processor 475, memory 476} in Embodiment 4.

[0852] A person of ordinary skill in the art can understand that all or part of the steps in the above method can be completed by instructing the 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 function module, and the present application is not limited to any specific form of software and hardware combination. The user equipment, terminal and UE in the present 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 tools, 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, RSU, drones, test equipment, such as wireless communication equipment such as transceivers or signaling testers that simulate some functions of base stations.

[0853] It should be understood by those skilled in the art that the present invention may be implemented in other specified forms without departing from its core or essential features. Therefore, the embodiments disclosed herein should be considered illustrative rather than restrictive in any way. The scope of the invention is determined by the appended claims rather than the preceding description, and all modifications within their equivalent meanings and regions are considered to be included therein.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver receives a first reference signal; A first transmitter transmits a target signal for random access; The air interface resource of the target signal is associated with the first reference signal, and candidates for the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used for sending the target signal depends on the first reference signal.

2. The first node according to claim 1, characterized in that: When the first reference signal is a first candidate reference signal, the measurement of the first reference signal is used for sending the target signal; when the first reference signal is a second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the first candidate reference signal is any reference signal in a first reference signal subset, and the second candidate reference signal is any reference signal in a second reference signal subset.

3. The first node according to claim 1 or 2, characterized in that: include: The first receiver receives a first signaling; Among them, for each reference signal in the target reference signal set, the first signaling indicates a companion reference signal, and the transmission for random access on the air interface resources associated with each reference signal depends on the corresponding companion reference signal; the reference signals in the target reference signal set are candidates for the first reference signal.

4. The first node according to claim 3, characterized in that: The candidates for the first reference signal and any of the accompanying reference signals are sent on one cell; at least some of the candidates for the first reference signal are used for cell selection or reselection, and there is at least one accompanying reference signal that cannot be used for cell selection or reselection.

5. The first node according to any one of claims 1 to 4, characterized in that: When the measurement of the first reference signal is used for at least one of timing advance of the target signal, spatial filtering of the target signal, or calculation of transmit power of the target signal, the measurement of the first reference signal is used for the transmission of the target signal.

6. The first node according to any one of claims 1 to 5, characterized in that: include: The first receiver selects the first reference signal from the candidates of the first reference signals; The reception quality of the first reference signal is not lower than or higher than a first threshold.

7. The first node according to any one of claims 3 to 6, characterized in that: When the first reference signal is the second candidate reference signal, the measurement of the first reference signal is not used for sending the target signal; the second candidate reference signal belongs to the target reference signal set, the first signaling indicates a third reference signal, and the third reference signal is a companion reference signal of the second candidate reference signal; The measurement of the third reference signal is used for sending the target signal.

8. A second node used for wireless communication, characterized in that: include: A second transmitter sends a first reference signal; A second receiver receives a target signal for random access; The receiver of the first reference signal includes a first node; the air interface resources of the target signal are associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used by the first node for sending the target signal depends on the first reference signal.

9. A method for a first node used in wireless communication, characterized in that: include: receiving a first reference signal; Sending a target signal for random access; The air interface resource of the target signal is associated with the first reference signal, and candidates for the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used for sending the target signal depends on the first reference signal.

10. A method for a second node used in wireless communication, characterized in that: include: sending a first reference signal; receiving a target signal for random access; The receiver of the first reference signal includes a first node; the air interface resources of the target signal are associated with the first reference signal, and the candidates of the first reference signal include multiple reference signals; whether the measurement of the first reference signal is used by the first node for sending the target signal depends on the first reference signal.

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