Signal transmission method and apparatus, terminal, network-side device, and medium

Abstract

The present application relates to the technical field of communications, and discloses a signal transmission method and apparatus, a terminal, a network side device, and a medium. The method comprises: a UE receiving a first parameter sent by a first device, the first parameter comprising at least one of the following parameters: a first offset value, an index value of the first offset value, target received power, nominal power, a power compensation parameter, a power deviation between an Msg3 PUSCH signal and a preamble, a power deviation between an MsgA PUSCH signal and a preamble, maximum transmit power, a power backoff value, a power class, transmit module information, and a downlink signal selection threshold; and the UE sending a first signal to a second device on the basis of the first parameter, the second device being an uplink receiving device.

Description

Signal transmission methods, devices, terminals, network-side equipment and media

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411454997.8, filed on October 17, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a signal transmission method, apparatus, terminal, network-side equipment, and medium. Background Technology

[0004] Figure 2 shows a typical asymmetric downlink Single Transmit / Receive Point (sTRP) and uplink Multiple Transmit / Receive Point (mTRP) system.

[0005] In an asymmetric downlink sTRP and uplink mTRP system, the user equipment (UE) receives downlink signals and control information from TRP1. The UE's uplink signals can be sent to at least one of TRP1 and TRP2, where TRP2 is used only for receiving uplink signals.

[0006] However, in asymmetric downlink sTRP and uplink mTRP systems, how the UE sends uplink signals to the uplink receiving device, such as TRP2, is an urgent problem to be solved. Summary of the Invention

[0007] This application provides a signal transmission method, apparatus, terminal, network-side device, and medium that enables a UE to send uplink signals to an uplink-only receiving device.

[0008] In a first aspect, a signal transmission method is provided, executed by a UE, the method comprising: the UE receiving first parameters sent by a first device, the first parameters including at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power of a first signal, a nominal power, a power compensation parameter, a power deviation between the physical uplink shared channel (PUSCH) signal of message Msg3 and the preamble, a power deviation between the physical uplink shared channel (PUSCH) signal of message MsgA and the preamble, a maximum transmit power of the first signal, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold; the UE transmitting the first signal to a second device based on the first parameters, the second device being an uplink receiving device.

[0009] Secondly, a signal transmission method is provided, executed by a first device, the method comprising: the first device sending a first parameter to a UE, the first parameter being used by the UE to send a first signal to a second device, the second device being an uplink receiving device; wherein the first parameter includes at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power of the first signal, a nominal power, a power compensation parameter, a power deviation between the Msg3 PUSCH signal and the preamble, a power deviation between the MsgA PUCSH signal and the preamble, a maximum transmit power of the first signal, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold.

[0010] Thirdly, a signal transmission device is provided, which may include: a receiving module for receiving first parameters transmitted by a first device, the first parameters including at least one of the following: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the physical uplink shared channel (PUSCH) signal of message Msg3 and the preamble, a power deviation between the PUCSH signal of message MsgA and the preamble, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold; and a transmitting module for transmitting the first signal to a second device, the second device being an uplink receiving device, based on the first parameters.

[0011] Fourthly, a signal transmission device is provided, which may include: a transmitting module for transmitting a first parameter to a UE, the first parameter being used by the UE to transmit a first signal to a second device, the second device being an uplink receiving device; wherein the first parameter includes at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the message Msg3 PUSCH signal and the preamble, a power deviation between the message MsgA PUCSH signal and the preamble, a maximum transmit power, a power backoff value, a power level, transmitting module information, and a downlink signal selection threshold.

[0012] Fifthly, a signal transmission apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0013] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0014] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to receive a first parameter sent by a first device; the processor is used by a UE to control the communication interface to send a first signal to a second device based on the first parameter, the second device being an uplink receiving device; the first parameter includes at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the physical uplink shared channel (PUSCH) signal and the preamble of message Msg3, a power deviation between the PUSCH signal and the preamble of message MsgA, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold.

[0015] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0016] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the processor is used to determine a first parameter, the communication interface is used to send the first parameter to a UE, the first parameter is used by the UE to send a first signal to a second device, the second device being an uplink receiving device; wherein the first parameter includes at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the message Msg3 PUSCH signal and the preamble, a power deviation between the message MsgA PUCSH signal and the preamble, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold.

[0017] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0018] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0019] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0020] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the signal transmission method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

[0021] In this embodiment, since the UE can receive a first parameter sent by the first device, including at least one of the following: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the Msg3 PUSCH signal and the preamble, a power deviation between the MsgA PUCSH signal and the preamble, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold, the UE can use the first parameter to send a first signal to the uplink receiving device. That is, the UE indirectly obtains the signal transmission parameters required to send a signal to the uplink receiving device through the first device, so as to ensure that the UE accurately sends a signal to the second device.

[0022] Furthermore, since the UE can send a first signal to the second device based on the first parameter, the second device can share the transmission load on the first device, thereby reducing interference between signals on the first device and improving system performance. Attached Figure Description

[0023] Figure 1 is a schematic diagram of a system architecture for the application of the signal transmission method provided in an embodiment of this application;

[0024] Figure 2 is a schematic diagram of the system architecture of an asymmetric single sTRP and multiple mPRT system in related technologies;

[0025] Figure 3 is a schematic flowchart of a signal transmission method provided in an embodiment of this application;

[0026] Figure 4 is a schematic diagram of a signal transmission method provided in this application, in which the UE determines the transmission power of the PRACH signal according to the first parameter and the second parameter;

[0027] Figure 5 is a schematic diagram of a signal transmission method provided in this application, in which the UE determines the transmission power of the PRACH signal according to the first parameter and the second parameter;

[0028] Figure 6 is a schematic diagram of a signal transmission method provided in this application, in which the UE sends a PRACH signal to a neighboring cell according to a third parameter and a first configuration information to obtain uplink synchronization;

[0029] Figure 7 is a schematic flowchart of a signal transmission method provided in an embodiment of this application;

[0030] Figure 8 is a schematic diagram of a signal transmission method provided in this application, in which the UE determines the transmission power of the PRACH signal according to the first parameter and the second parameter;

[0031] Figure 9 is a schematic diagram of a signal transmission method provided in this application, in which the UE determines the transmission power of the PRACH signal according to the first parameter and the second parameter;

[0032] Figure 10 is a schematic diagram of a signal transmission device provided in an embodiment of this application;

[0033] Figure 11 is a schematic diagram of a signal transmission device provided in an embodiment of this application;

[0034] Figure 12 is a schematic diagram of the structure of a terminal provided in an embodiment of this application;

[0035] Figure 13 is a schematic diagram of the structure of a terminal provided in an embodiment of this application;

[0036] Figure 14 is a schematic diagram of the structure of a network-side device provided in an embodiment of this application. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0038] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0039] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0040] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0041] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.The term "base station" can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to any specific technical terminology. It should be noted that this application embodiment only uses a base station in an NR system as an example for description and does not limit the specific type of base station.

[0042] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. The core network functions include: BSF (Block Network Function), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), and Network Data Analytics Function (NWDAF). It should be noted that this application embodiment only uses core network equipment in the NR system as an example and does not limit the specific type of core network equipment. If the name of the core network equipment mentioned in this application embodiment changes in subsequent protocol versions (e.g., 6G), it will still be within the scope of protection of this application.

[0043] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0044] The following is an explanation of the nouns and terms used in this application.

[0045] 1. Current status of discussion on asymmetric downlink (DL) sTRP / uplink (UL) mTRP scenarios (including the case of UL-only TRP reception) (Release 19):

[0046] A typical Asymmetric DL sTRP / UL mTRP scenario is shown in Figure 2. The UE receives downlink signals and control information from TRP1. At least one of the uplink channel sounding reference signal (SRS), PUCCH signal and PUSCH signal can be sent to at least one of TRP1 and TRP2. TRP2 is an uplink-only (UL-only) TRP that does not send downlink signals and only receives uplink signals.

[0047] The current discussions and conclusions regarding Asymmetric DL sTRP / UL mTRP scenarios in 3GPP Release 19 focus on the following aspects:

[0048] A. Transmission Configuration Indicator (TCI) state indication:

[0049] (1) Path Loss (PL) offset, also known as path loss offset value or path loss offset value.

[0050] Since the UL-only TRP does not transmit downlink signals, the path loss between the UL-only TRP and the UE cannot be obtained through downlink measurement. Therefore, the network can indirectly indicate the path loss between the UL-only TRP and the UE by indicating a PL offset to the UE through the DL TRP, which represents the difference in path loss between the UL-only TRP and the DL TRP.

[0051] In the discussion of R19, it was determined that the PL offset parameter is associated with the TCI state, and the PL offset parameter can be updated by updating the TCI through MAC CE. The range of PL offset is [-10, 60] dB.

[0052] (2) Two separate SRS closed-loop power control systems from PUSCH

[0053] In Asymmetric DL sTRP / UL mTRP scenarios, SRS can be configured separately from PUSCH, and two sets of SRS closed-loop power control are also supported. When srs-PowerControlAdjustmentStates is 'separateClosedLoop', the closed-loop power control parameters used by the UE are indicated by the closedLoopIndex-r17 parameter (i0 or i1) in the TCI state. Furthermore, a 1-bit information bit is added to DCI format2_3 to indicate which set of parameters is used for SRS closed-loop power control.

[0054] (3) Enhanced PDCCH order triggered PRACH (Contention-free random access, CFRA)

[0055] In PDCCH order triggered CFRA, PRACH also supports being sent to UL-only TRP. The PL offset of the PRACH uses the PL offset associated with the currently indicated UL TCI state.

[0056] 2. Cell Search and Synchronization Process in NR Technology

[0057] In relevant 5G NR technologies, to achieve downlink synchronization, the UE needs to obtain the frequency point of the access carrier by searching for a synchronization block (SS / PBCH Block, SSB). Since NR has a wide spectrum range, to reduce the complexity of the search, the UE performs SSB searches at certain frequency intervals specified in the protocol; this frequency interval is called the synchronization raster. The UE detects the received power (SS-RSRP) of the synchronization signal at the corresponding frequency point according to the synchronization raster, and selects any SSB whose SS-RSRP is higher than the threshold (rsrp-ThresholdSSB). By demodulating the primary synchronization signal (PSS), secondary synchronization signal (SSS), and physical broadcast channel (PBCH) signal in the selected SSB, the UE completes cell selection and synchronization with the base station, and then performs random access.

[0058] 3. Random Access Procedure

[0059] In related technologies, there are processes that include contention-based random access procedures and non-contention-based random access procedures.

[0060] In the contention-based 4-step random access procedure (RACH), the UE first sends MSG1 to the network, containing the preamble. After detecting the preamble, the network sends an MSG2 / RAR (Random Access Response) message, containing the number of the preamble detected by the network and the uplink radio resources allocated to the UE to send MSG3. After receiving MSG2, the UE confirms that at least one of the preamble numbers carried in MSG2 matches the number of the preamble it sent. Then, according to the resources indicated by the RAR, it sends MSG3 containing contention resolution information. After receiving MSG3, the network sends MSG4 containing contention resolution information. Upon receiving MSG4, the UE confirms that the resolution information is consistent with what it sent in MSG3, thus completing the 4-step random access procedure.

[0061] The network includes UL grant information in the RAR to indicate MSG3 PUSCH scheduling information, and also includes RAPID (RACH preamble ID), TC-RNTI, TA, and other information. If the network does not receive the MSG3 PUSCH, it can schedule the retransmission of the MSG3 PUSCH in the PDCCH scrambled by TC-RNTI.

[0062] In contention-based random access procedures, different UEs randomly select a preamble for transmission. This means different UEs might select the same preamble on the same time-frequency radio resource (RACH Occasion, RO resource), a situation known as UE preamble conflict. In this case, different UEs will receive the same RAR, and will then transmit the MSG3 PUSCH according to the scheduling information in the RAR UL grant. Repetitive transmission of the MSG3 PUSCH is not supported in Rel-15 / 16 random access. The network can only resolve one UE-transmitted PUSCH (containing contention resolution information) on a single MSG3 PUSCH scheduling resource. Therefore, the network will include the contention resolution information received in MSG3 in MSG4. If the contention resolution information received by the UE in MSG4 matches the contention resolution information transmitted by the UE in MSG3 PUSCH, the UE considers the contention resolution successful. If they do not match, the contention resolution is considered unsuccessful.

[0063] If contention resolution fails, the UE will reselect RACH transmission resources, perform PRACH transmission, and attempt another random access attempt.

[0064] 4. PRACH power control

[0065] PRACH transmit power P PRACH,b,f,c The formula for calculating (i) is: P PRACH,b,f,c (i)=min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c [dBm].

[0066] Where b represents the UL (Band Width Part, BWP), f represents the carrier, C is the UE's serving cell identifier, i represents the transmission timing, and P... CMAX,f,c (i) is the maximum transmission power allocated to the UE on carrier f of serving cell C at transmission timing i (e.g., the maximum transmission power of the UE can be 23dBm); P PRACH,b,f,c (i) is the target received power of the PRACH signal on the active UL BWP b of carrier f on serving cell C, such as the preamble target received power; PL b,f,c It is the path loss of the carrier f of the active UL BWP b of the DL RS associated with the PRACH transmission on the active DL BWP of the serving cell C, and PL b,f,c = Reference Signal Power (dB) – Higher layer filtered RSRP (dBm, such as when filtered by RRC layer).

[0067] The UE's initial transmit power is primarily related to two factors: the base station's expected initial receive power (sensitivity) and the path loss between the base station and the UE. The base station informs the UE in advance of the initial receive power (preamble Initial Received Target Power in LTE, preamble Received Target Power in NR) and the reference signal transmit power (reference signal power in LTE, SS PBCH-Block Power (SSB) and power control offset SS (for CSI-RS) in NR). The UE, combined with the actual measured reference signal received power, can then calculate the path loss (reference signal transmit power – reference signal received power) and the initial transmit power (base station initial receive power + path loss).

[0068] In NR, because CRS (reducing always-on signal overhead) is eliminated, the reference signal measured by the UE is either the Synchronization Signal Block (SSB) or the Channel-State Information Reference Signal (CSI-RS). In LTE, path loss is denoted as PL. c In NR, due to the introduction of the concept of Bandwidth Part (BWP), path loss is denoted as PL. b,f,c (b represents BWP, f represents carrier, and c represents cell).

[0069] In NR, the mechanism for MSG1 power boosting is similar to that in LTE, but with slight differences. In NR, the PRACH (Occasion) sent by the UE for MSG1 is associated with the SSB beam. If the UE reselects RA resources and chooses the same SSB beam or CSI-RS beam (and does not receive a notification to pause power boosting from the underlying layer), the transmit power will be boosted only when retransmitting Msg1. If the UE chooses a different SSB beam or CSI-RS beam, the transmit power will not be boosted this time (the diagram assumes that the path losses PL1 and PL2 of the two beams are the same).

[0070] 5. Uplink power control

[0071] PUSCH power control: The PUSCH transmit power can be calculated using the following formula:

[0072] The above formula is for calculating PUSCH power, which is determined by the smaller of two values. The meanings of some of the parameters are as follows:

[0073] ①i: The transmission timing i of PUSCH / PUCCH / SRS / PRACH signals is determined by the intra-frame time slot index of a Single Frequency Network (SFN). The first symbol S and multiple consecutive symbols L within that time slot are determined. This corresponds to the PUSCH transmission timing i.

[0074] ②j: Parameter set configuration index.

[0075] j = 0 represents the uplink power control (PUSCH) carrying Msg3 (4-step RA) or MsgA (2-step RA);

[0076] j=1 represents the UL power control (PUSCH) during ConfiguredGrantConfig configuration;

[0077] j from 2 to J represents the power control under normal circumstances.

[0078] ③qd: The index of the reference signal used for downlink path loss estimation. The reference signal can be SSB or CSI-RS.

[0079] ④l:PUSCH power control adjustment state.

[0080] ⑤b,f,c: Parameter b corresponds to the UL BWP index, f corresponds to the carrier index, and c corresponds to the serving cell index.

[0081] ⑥P CMAX,f,c (i) The subscripts are f and c, corresponding to the power parameters at the carrier level; P CMAX,f,c (i) represents the maximum transmission power configured for the UE on carrier f of the serving cell C in the transmission of occasion i;

[0082] ⑦P O_PUSCH,b,f,c The subscripts b, f, and c correspond to the power parameters at the BWP level, specifically the power parameters corresponding to UL BWP index b. P O_PUSCH,b,f,c (j) via P O_NOMINAL,PUSCH,f,c (j) and P O_UE_PUSCH,b,f,c (j) is obtained by summing.

[0083] When j = 0, it represents the case of Msg3 (4-step RA / Type-1 RA) or MsgA (2-step RA / Type-2 RA), where:

[0084] If it is a four-step RACH, the power parameter corresponding to sending Msg3 is: P O_UE_PUSCH,b,f,c (0)=0, and P O_NOMINAL,PUSCH,f,c (0)=P O_PRE +Δ PREAMBLE,Msg3 Among them, P O_PRE As indicated by the preambleReceivedTargetPower parameter, Δ PREAMBLE_Msg3 Indicated by the msg3-DeltaPreamble parameter, the default value is 0.

[0085] If it is a two-step RACH, the power parameters corresponding to sending MsgA include: P O_UE_PUSCH,b,f,c (0) = 0 and P O_NOMINAL_PUSCH,f,c (0)=P O_PRE +Δ MsgA_PUSCH Among them, PO_PRE The power is indicated by MsgA - preamble received target power (msgA-preambleReceivedTarget Power). If there is no msgA-preambleReceivedTargetPower, it is indicated by preambleReceivedTargetPower. Δ MsgA_PUSCH As indicated by the msgA-DeltaPreamble parameter, the default value is Δ. MsgA_PUSCH =Δ PREAMBLE_Msg3 .

[0086] When j=1, it represents the PUSCH power configured in ConfiguredGrantConfig. Where P... O_NOMINAL,PUSCH,f,c (1) Indicated by the p0-NominalWithoutGrant parameter, the default value is P. O_NOMINAL,PUSCH,f,c (1) = P O_NOMINAL,PUSCH,f,c (0); P O_UE_PUSCH,b,f,c (1) The value is the p0 value in p0-PUSCH-Alpha of the ConfiguredGrantConfig parameter.

[0087] j∈{2,…,J-1}=S J When, it represents the PUSCH power control under normal conditions. Where P... O_NOMINAL,PUSCH,f,c (j) Indicated by the p0-NominalWithoutGrant parameter, the default is P. O_NOMINAL,PUSCH,f,c (j)=P O_NOMINAL,PUSCH,f,c (0); P O_UE_PUSCH,b,f,c (j) takes the value of p0 corresponding to p0-PUSCH-AlphaSetId in the P0-PUSCH-AlphaSet parameter.

[0088] ⑧PL b,f,c (q dThe path loss is calculated by subtracting the measured and higher-layer filtered RSRP from the referenceSignalPower. The network will configure a signal for the UE to calculate the path loss. This signal can be CSI-RS or SSB. If periodic CSI-RS reception is not configured, then: referenceSignalPower = ss-PBCH-Blockpower; if periodic CSI-RS is configured, then: referenceSignalPower = ss-PBCH-Blockpower or powerControlOffsetSS. The parameter powerControlOffsetSS is the power offset value of CSI-RS relative to SSB, and the default value is powerControlOffsetSS = 0.

[0089] 6. PDCCH order triggered RACH

[0090] The PDCCH order (Physical Downlink Control Channel order) is a technique used by the base station (eNB / gNB) to force the UE to initiate the RACH process. When the base station detects that the UE has lost downlink synchronization and has downlink data for that UE, it will trigger the UE to initiate RACH through the PDCCH order. In this case of loss of synchronization, the base station initiates the PDCCH order by sending DCI format 1_0, PRACH preamble, and RACH Occasion information on the SSB beam index where the UE is camped. If the gNB finds that its MAC layer buffer has downlink data to be sent to the UE, and the loss of synchronization is caused by the UE's time alignment timer expiring, then the gNB will trigger the PDCCH command to resynchronize with the UE.

[0091] The RACH procedure triggered by the PDCCH order is shown in the figure below. If the gNB receives downlink data from the UE but detects that the UE has lost synchronization, it will send a PDCCH order via DCI Format 1_0, including the SSB index, ra-PreambleIndex, and PRACH Mask Index (4-step RACH) / msgA-SSB-SharedRO-MaskIndex (2-step RACH) information to indicate the UE-specific RACH preamble. The UE initiates the RACH procedure based on the specific preamble indicated by the PDCCH order to re-complete synchronization and RRC configuration.

[0092] The signal transmission method, apparatus, terminal, network-side equipment, and medium provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0093] This application provides a signal transmission method. Figure 3 shows a flowchart of the signal transmission method provided in this application. As shown in Figure 3, the signal transmission method may include the following steps:

[0094] Step 300: The first device sends the first parameter to the UE.

[0095] Step 301: The UE receives the first parameter.

[0096] Step 302: The UE sends a first signal to the second device based on the first parameter.

[0097] Step 303: The second device receives the first signal.

[0098] The first parameter may include at least one of the following parameters: first offset value, index value of the first offset value, target received power, nominal power, power compensation parameter, power deviation between Msg3 PUSCH signal and preamble, power deviation between MsgA PUCSH signal and preamble, maximum transmit power, power backoff value, power level, transmit module information, downlink signal selection threshold, and the second device may be an uplink receiving device.

[0099] In some embodiments of this application, each parameter in the first parameter may include at least one parameter value, which is different.

[0100] In some embodiments of this application, the first offset value, the index value of the first offset value, the target received power, the nominal power, the power compensation parameter, the power deviation between the Msg3 PUSCH signal and the preamble, the power deviation between the MsgA PUCSH signal and the preamble, the maximum transmit power, the power backoff value, the power level, the transmit module information, and the downlink signal selection threshold in the first parameter are each a parameter item of the first parameter.

[0101] In some embodiments of this application, the first device can be a device that supports both uplink and downlink transmission, meaning the first device can receive uplink signals and transmit downlink signals. The first device can be referred to as a conventional or normal network-side device, such as a Normal TRP.

[0102] In some embodiments of this application, the second device may include a device that only supports uplink transmission, that is, the second device receives uplink signals but does not send downlink signals; or, the second device may also include a device in which the transmitting module is in sleep mode but the receiving module is enabled, such as a device that is inactive discontinuous transmission (DTX) and active discontinuous reception (DRX).

[0103] In some embodiments of this application, activating DTX or DRX indicates that DTX or DRX is in an active state (active time), meaning that the device's transmitting or receiving module is active, i.e., the device can transmit or receive signals; deactivating DTX or DRX indicates that DTX or DRX is in a non-active state (non-active time), meaning that the device's transmitting or receiving module is in a sleep state, i.e., the device cannot transmit or receive signals. Furthermore, active time can also be expressed as active period, active duration, on duration, on-state, on-time, or on-period; non-active time can also be expressed as non-active period, non-active duration, off duration, off-state, off-time, or off-period, etc.

[0104] In some embodiments of this application, the first device and the second device may be any of the following:

[0105] A specific signal-associated TRP or set of TRPs;

[0106] A TRP associated with a certain type, a certain number of reference signals, or a certain set of reference signals;

[0107] A set of TRPs associated with a certain type, a certain number of reference signals, or a certain group of reference signals.

[0108] A generalized transmission unit that associates signals for a specific purpose;

[0109] The aforementioned transmitting unit may include any of the following: repeater, tag, cell (such as non-terrestrial network (NTN), small cell), integrated access backhaul (IAB) node, beam, quasi-co-location (QCL) status.

[0110] In some embodiments of this application, the first device and the second device described above may correspond to any of the following: a carrier, a carrier group, an SSB, an SSB group, a BWP, a BWP group, a frequency resource, a frequency resource group, or a certain transmission mode.

[0111] In some embodiments of this application, the downlink signal may include at least one of the following: SSB, a reference signal, and a signal comprising at least one of a synchronization signal, a broadcast signal, a Physical Broadcast Channel (PBCH) signal, a downlink broadcast channel signal of other system messages, and a control channel signal of other system messages. The reference signal may include at least one of the following:

[0112] Signals such as Channel State Information-Reference Signal (CSI-RS), Tracking Reference Signal (TRS), Positioning Reference Signal (PRS), Phase Tracking Reference Signal (PTRS), and Demodulation Reference Signal (DMRS) are included.

[0113] In some embodiments of this application, the measurement parameters corresponding to the downlink signal selection threshold include at least one of the following: Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Channel Quality Indicator (CQI), Received Signal Strength Indication (RSSI), Signal-to-Noise Ratio (SNR), Signal to Interference plus Noise Ratio (SINR), and Signal to Interference Ratio (SIR).

[0114] In some embodiments of this application, the first device can associate different downlink signal selection thresholds with different uplink receiving devices. Alternatively, the first device can configure multiple downlink signal selection thresholds in the first parameter, and the UE can select a downlink signal based on the comparison between the measurement result of the downlink signal and the multiple downlink signal selection thresholds.

[0115] For example, the first device configures a dedicated downlink signal selection threshold for the SSBs sent by each TRP, which is used for selecting downlink signals.

[0116] In some embodiments of this application, the target received power may be the target received power of the first signal or the target received power of the first device.

[0117] In some embodiments of this application, the maximum transmission power can be the maximum transmission power of the UE.

[0118] In some embodiments of this application, the above-mentioned signal power compensation parameter can be: α parameter.

[0119] In some embodiments of this application, the power back-off value can be: the maximum transmit power that 5G NR allows the UE to appropriately back off under a specific modulation scheme and a specific resource block (RB) allocation mechanism.

[0120] In some embodiments of this application, the power level described above defines the maximum transmit power of the UE in the corresponding frequency band and channel bandwidth.

[0121] In some embodiments of this application, a downlink signal selection threshold can be used by the UE to select a downlink signal, such as a first downlink signal. For example, if the measurement result of a downlink signal is greater than the downlink signal selection threshold, the UE can select that downlink signal.

[0122] In some embodiments of this application, each second downlink signal or each second downlink signal group corresponds to a downlink signal selection threshold, and the second downlink signal or second downlink signal group is associated with the uplink transmission resources of the uplink receiving device. That is, the downlink signal or downlink signal group associated with the uplink transmission resources of the uplink receiving device can each correspond to a downlink signal selection threshold, so that when the UE receives the corresponding downlink signal, it can use the downlink selection threshold corresponding to the downlink signal or downlink signal group to determine whether the UE should select the downlink signal or the downlink signal group.

[0123] In some embodiments of this application, the downlink selection thresholds corresponding to different second downlink signals may be different, or the downlink selection thresholds corresponding to different groups of second downlink signals may be different.

[0124] In some embodiments of this application, the downlink signal selection threshold corresponding to the second downlink signal and the second downlink signal may be carried by the same or different signals.

[0125] In some embodiments of this application, the transmission module information may indicate the power module in the UE, which may be a low-power module or a high-power module.

[0126] In some embodiments of this application, the first offset value may include at least one of the following:

[0127] The path loss offset between the UE and the uplink receiving device, PL offset;

[0128] The offset value of the target received power;

[0129] The offset value of the nominal power;

[0130] Offset value of transmission power;

[0131] The offset value of the power deviation between the Msg3 PUSCH signal and the preamble;

[0132] The offset value between the MsgA PUSCH signal and the preamble power deviation;

[0133] Offset value of power compensation parameters;

[0134] Offset value of the downlink signal selection threshold.

[0135] In some embodiments of this application, the path loss offset between the UE and the uplink receiving device can be understood as the offset between the path loss from the UE to the uplink receiving device and the path loss from the UE to the first device.

[0136] In some embodiments of this application, the first offset value may be an index of multiple predefined offset values ​​in the network.

[0137] For example, the network-side device predefines K PL offsets. The network-side device sends a first parameter to the UE to indicate the index value of one or more PL offsets in the range of 1 to K, which is used to indicate the PL offset value corresponding to these index values ​​to the UE. K is an integer greater than or equal to 1.

[0138] In some embodiments of this application, the first offset value can be dynamically updated when the UE is in a connected state.

[0139] For example, the first device or the second device can update the first offset value based on the measurement of the path loss between the UE and at least one uplink receiving device.

[0140] In some embodiments of this application, the path loss between the UE and the network-side device includes any one of the following:

[0141] The path loss is determined based on the RSRP measured by SSB and the reference signal received power (SS-RSRP), such as the first path loss between the UE and the first device, where the path loss offset value is 0 or there is no path loss offset value.

[0142] The first path loss + path loss offset value between the UE and the first device is determined based on the RSRP and SS power measured by SSB.

[0143] In some embodiments of this application, if the first parameter includes an offset value of the target received power, and the UE uses the first device as the receiving device, the UE can send a first signal to the first device based on the target received power of the first device and the target power offset value in the first parameter.

[0144] It is understandable that when the UE uses the second device as the receiving device, the offset value in the first offset value excluding the downlink signal selection threshold is the offset value that the UE needs to add when sending a signal to the second device, such as the first signal.

[0145] For example, when the first offset value is the path loss offset value, the UE can determine the second path loss between the UE and the second device based on the first path loss between the UE and the first device plus the path loss offset value. Then, the UE determines the transmission power of the first signal sent by the UE to the second device based on the second path loss.

[0146] Thus, since the first offset value can include at least one of the following: path loss offset between the UE and the uplink receiving device, target received power offset, nominal power offset, transmission power offset, power deviation between the Msg3 PUSCH signal and the preamble, power deviation between the MsgA PUSCH signal and the preamble, power compensation parameter offset, and downlink signal selection threshold offset, the flexibility of the first device in configuring or transmitting the first offset value for the UE can be improved.

[0147] In some embodiments of this application, the sending module information may be the type information of the sending module or the identifier of the sending module.

[0148] In some embodiments of this application, the UE can determine the transmission module parameters used to transmit the first signal, such as power control parameters, based on the transmission module information, and thus determine the transmission power of the first signal. The power control parameter kiyomi includes the target received power and / or power compensation coefficient, etc.

[0149] For example, if the UE uses a low-power module to send the first signal, then: the UE can use the power control parameters corresponding to the low-power module, such as the power bias value Δ of the uplink power control in NR. TF The transmission power of the first signal is determined by using the carrier index f(i,l) or by employing the uplink transmission power calculation formula corresponding to the low-power module.

[0150] In some embodiments of this application, the first signal may include at least one of the following: PRACH signal, MsgA or Msg3PUSCH signal, PUSCH signal, SRS signal, PUCCH signal, wake-up WUS signal, sensing signal, transmission request signal for third downlink signal, etc.

[0151] The third downlink signal may include at least one of the following: SSB, Master Information Block, System Information Block (SIB) 1, or a signal carrying other system messages.

[0152] In some embodiments of this application, each parameter in the first parameter can also correspond to a parameter class. Specifically, all parameter values ​​in each parameter can be treated as one type of parameter.

[0153] For example, assuming the first parameter includes multiple path loss offset values, which can be simply referred to as path loss offset values, then: the parameter class corresponding to these multiple path loss offset values ​​can be called path loss offset parameters.

[0154] In some embodiments of this application, the first parameter can be configured by a first granularity or associated with a first granularity; wherein, the first granularity includes at least one of the following:

[0155] Each downlink signal, such as per SSB, can represent an area or location information;

[0156] Each downlink signal set, such as per SSB group;

[0157] Each community;

[0158] Each community gathers;

[0159] Each frequency domain resource unit, e.g., per carrier;

[0160] Each set of frequency domain resource units, such as a carrier group.

[0161] For example, the first device can configure a first parameter through each SSB, where each SSB can also represent a region or location information.

[0162] It is understood that the aforementioned downlink signal set can be a set of multiple downlink signals, that is, the network-side device configures a corresponding first offset value for a specific downlink signal set; for example, the UE determines the value of the first offset value according to the composition of the SSB set selected (based on predefined rules).

[0163] In some embodiments of this application, the frequency domain resource unit may include a carrier, a BWP, or a subcarrier.

[0164] In some embodiments of this application, each parameter in the first parameter may include at least one parameter value, and each parameter may correspond to or be associated with at least one uplink receiving device; wherein, the second device may be one of the uplink receiving devices corresponding to the first parameter.

[0165] For example, the first parameter associated with SSB#1 of TRP0 is configured with two PL offsets, namely PL offset1 and PL offset2. This first parameter can indicate that two UL-only TRPs, such as TRP1 and TRP2, are deployed in the SSB1 direction of TRP0. The difference between the path loss between these two UL-only TRPs and the UE and the path loss between TRP0 and the UE are PL offset1 and PL offset2, respectively.

[0166] For example, if the first parameter associated with SSB1 of TRP0 is configured with PL offset1, then the first parameter can indicate that the network side has deployed two UL-only TRPs in the SSB1 direction of TRP0, such as TRP1 and TRP2. The difference between the path loss between these two UL-only TRPs and the UE and the path loss between TRP0 and the UE is PL offset1.

[0167] In some embodiments of this application, the signal transmission method provided in this application can be applied to random access procedures, initial access procedures when the UE is in idle state, cell migration procedures when the UE is in connected state, and synchronization procedures with uplink receiving devices in advance when the UE is in connected state and at the edge of the primary cell.

[0168] In some embodiments of this application, the first device sending the first parameter to the UE may include: the first device sending first information to the UE; the UE receiving the first parameter may include: the UE receiving the first information. The first information may include the first parameter.

[0169] In some embodiments of this application, the first information may be carried by at least one of the following: system information, RRC signaling.

[0170] For example, when the UE is in idle, connected, or disconnected state, the first information can be carried by a system message.

[0171] For example, when the UE is in connected state, the first information is carried by RRC signaling.

[0172] For example, RRC signaling may include Physical Downlink Control Channel (PDCCH) signals.

[0173] In some embodiments of this application, the first device may specify a downlink signal selection threshold or an offset value of the downlink signal selection threshold associated with a specific downlink signal (such as a first downlink signal) in a system message for the second device to select the downlink signal corresponding to the transmission resources of the received signal.

[0174] In some embodiments of this application, the first device sending first information to the UE may include: the first device sending first information to the UE based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship associated with the first downlink signal selected by the UE; the UE receiving the first information may include: the UE receiving the first information based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship of the first device associated with the first downlink signal selected by the UE. The quasi-co-location relationship may indicate that the first downlink signal is quasi-co-located with the signal carrying the first information.

[0175] For example, if the first downlink signal SSB#1 is associated with the beam direction of TRP0, then TRP0 (i.e. the first device) can send RRC signaling to the UE in beam direction 1. The RRC signaling carries first information, which includes a first offset value.

[0176] For example, the first downlink signal SSB#1 is associated with a first quasi-co-address relationship, which indicates that the signal carrying the first information is quasi-co-addressed with SSB#1. Thus, the UE receives the signal carrying the first information based on the first quasi-co-address relationship, thereby obtaining the first information.

[0177] In some embodiments of this application, before receiving the first information, the UE may first detect the first downlink signal and receive the first information in the time-frequency resources or beam direction of the first device associated with the first downlink signal.

[0178] Furthermore, the aforementioned beam direction can be extended to a quasi-co-address relationship, that is, the signal carrying the first information and the first downlink signal are quasi-co-addressed.

[0179] Thus, since the first device can send the first information to the UE based on at least one of the time-frequency resources, beam direction and quasi-co-location relationship associated with the first downlink signal, the UE can accurately receive the first information based on the time-frequency resources, beam direction and quasi-co-location relationship associated with the first downlink signal, thereby improving the success rate of sending and receiving the first information.

[0180] In some embodiments of this application, step 302 may include: in a first transmission scenario of the first signal, the UE transmits a first signal to a second device based on a first parameter.

[0181] The first sending scenario may include at least one of the following:

[0182] The first signal is transmitted in a single transmission;

[0183] Repeated transmission of the first signal;

[0184] Retransmission of the first signal;

[0185] Multiple transmissions of the first signal;

[0186] The first signal is based on multiple transmissions of different beams;

[0187] The first signal is based on multiple transmissions of the same beam;

[0188] Multiple transmissions of the first signal are associated with different signals;

[0189] Multiple transmissions of the first signal are associated with the same signal.

[0190] In some embodiments of this application, repeated transmission of the first signal includes: multiple transmissions based on the same beam and associated with the same signal.

[0191] Thus, since the UE can send the first signal to the second device based on the first parameter during the single transmission, multiple transmissions, retransmissions, or repeated transmissions of the first signal, the flexibility of the UE in sending the first signal to the second device based on the first parameter can be improved.

[0192] In some embodiments of this application, after receiving the first parameter, the UE can determine the transmission power, uplink transmission resources, beam direction, etc. of the first signal based on the first parameter.

[0193] In some embodiments of this application, the transmission power of the first signal can be determined by at least one of the first parameter, the third parameter, and the fourth parameter.

[0194] The third parameter includes at least one downlink signal measurement threshold or an offset value of at least one downlink signal measurement threshold; wherein each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; wherein the at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

[0195] The fourth parameter is used to indicate the cell information of at least one cell associated with the first parameter, and the first configuration information can indicate the uplink transmission resources of the at least one cell.

[0196] In some embodiments of this application, the fourth parameter and the first configuration information may be associated with the index of the first downlink signal.

[0197] In some embodiments of this application, the fourth parameter may also be associated with the first parameter, and the first configuration information may be associated with either the fourth parameter or the first parameter.

[0198] The first possible implementation: The UE can determine the transmission power of the first signal based on the first parameter.

[0199] In some embodiments of this application, step 302 may include steps 302A and 302B as described below.

[0200] Step 302A: The UE determines the first transmission power based on the first parameter.

[0201] Step 302B: The UE uses the first transmission power to send the first signal to the second device.

[0202] It is understandable that the UE can determine the transmission power of the first signal based on the first parameter, and can transmit the uplink signal to the uplink receiving device with a more appropriate transmission power in idle, connected or disconnected states, which is beneficial to improving the UE's energy efficiency and reducing the load on the first device.

[0203] For example, the UE can determine the transmission power of the PRACH signal based on the first parameter, and initiate random access to the uplink receiving device with a more appropriate power to improve UE energy efficiency.

[0204] Thus, since the UE can determine the first transmission power based on the first parameters sent by the first device and use the first transmission power to send the first signal, the success probability of successfully sending the first signal can be increased.

[0205] In some embodiments of this application, step 302A may include step 302A1.

[0206] Step 302A1: Under the condition that the first preset condition is met, the UE determines the first transmission power according to the first parameter.

[0207] The first preset condition may include at least one of the following:

[0208] The measurement result of the first downlink signal selected by the UE meets the preset measurement result conditions;

[0209] The first signal transmission failed or backoff;

[0210] First signal retransmission;

[0211] During the repeated transmission of the first signal, the number of repeated transmissions of the first signal is greater than or equal to the preset number of repeated transmissions. For example, assuming the number of repeated transmissions is 5 times and the total number of repeated transmissions of the first signal is 10 times, then the UE uses the first parameter to determine the first transmission power during the 5th to 10th repeated transmissions of the first signal.

[0212] The load on the first device is greater than the load threshold.

[0213] The first device is in energy-saving mode or not receiving signals, while the second device is in signal receiving mode.

[0214] In some embodiments of this application, the aforementioned preset measurement result conditions may include any one of the following: the downlink signal measurement result is within a preset measurement range, the downlink signal measurement result is less than or equal to a first preset measurement threshold, the downlink signal measurement result is greater than the first downlink signal measurement threshold and less than or equal to a second preset measurement threshold, the downlink signal measurement result is less than the first preset measurement threshold, and the downlink signal measurement result is greater than or equal to the first downlink signal measurement threshold and less than the second preset measurement threshold; wherein, the first preset measurement threshold is less than the second preset measurement threshold.

[0215] It should be noted that the first signal measurement threshold and the second preset measurement threshold can be indicated by the network or agreed upon by the protocol.

[0216] For example, the first preset measurement threshold and the second preset measurement threshold mentioned above can be indicated by the first device through the following third parameter.

[0217] In some embodiments of this application, the measurement results of the first downlink signal satisfy different preset measurement result conditions, and the UE may use different parameters in the first parameters to determine the first transmit power.

[0218] For example, suppose the first parameter includes PL offset1 and PL offset2, and the second parameter includes two RSRP thresholds, T1 and T2, where T1 > T2, and T1 and T2 correspond to PL offset1 and PL offset2 respectively; then:

[0219] In one scenario, the aforementioned preset measurement result conditions may include: T2 of the SSB signal < RSRP of the SSB signal ≤ T1, and RSRP of the SSB signal < T2. If the UE measures the RSRP of SSB#1 within the range (T2, T1), the UE can determine the first transmission power of the first signal based on the PL offset1 corresponding to T1. If the RSRP of SSB#1 < T2, the UE can determine the first transmission power of the first signal based on the PL offset1 corresponding to T2. If the RSRP of SSB#1 > T1, it indicates that the UE does not meet the preset measurement result conditions.

[0220] In another scenario, the aforementioned preset measurement result conditions may include: T2 of the SSB signal ≤ RSRP of the SSB signal < T1, and RSRP of the SSB signal ≤ T2. If the UE measures the RSRP of SSB#1 within the range [T2, T1), the UE can determine the first transmission power of the first signal based on the PL offset1 corresponding to T1. If the RSRP of SSB#1 ≤ T2, the UE can determine the first transmission power of the first signal based on the PL offset1 corresponding to T2. If the RSRP of SSB#1 ≥ T1, it indicates that the UE does not meet the preset measurement result conditions.

[0221] It is understandable that by comparing the first downlink signal measurement result with the preset measurement result conditions, and selecting the method of sending the first signal to the first device or the second device based on the comparison result, the UE can use lower power to send the signal, which can help the UE save energy.

[0222] In some embodiments of this application, the load of the device can be determined based on at least one of the following: the number of users connected to the device, the sum of the receiving rates of the signals received by the device, the sum of the receiving rates of the data received by the device, the number of preambles received by the device, etc.

[0223] In some embodiments of this application, the first preset condition includes that when the load of the first device is greater than the load threshold, the first device can inform the UE that it is currently in a high load state by adjusting the SSB transmission period, indicating the SSB information used for access, etc., so as to instruct the UE to use the first parameter to access the uplink receiving device.

[0224] In some embodiments of this application, the first device being in an energy-saving state may include: the first device being in a discontinuous reception (DRX) inactive state, i.e., an off-duration state; the second device being in a signal receiving state may include: when the second device is in a DRX active state, it can receive signals.

[0225] For example, during the time period when the Normal TRP is in power-saving mode and the UL-only TRP is in signal receiving mode, the UE can use the first parameter to determine the first transmission power of the first signal and use the first transmission power to transmit the signal to the UL-only TRP.

[0226] In some embodiments of this application, if the UE does not meet the first preset condition, it can indicate that the UE currently does not meet the conditions for sending a signal to the uplink receiving device. For example, the UE may be unable to successfully send a signal to the uplink receiving device. Therefore, to avoid signal transmission failure, the UE may not use the first parameter and send the first signal to the second device; instead, it may send the first signal to the first device. Alternatively, it can instruct the second device to meet the UE's uplink transmission requirements.

[0227] Thus, since the UE uses the first parameter to determine the first transmission power when the first preset condition is met, the waste of the UE's computing resources can be avoided, and the success rate of the UE transmitting the first signal using the first transmission power can be improved.

[0228] In some embodiments of this application, step 302A may include step 302A2.

[0229] Step 302A2: The UE determines the second parameter based on the first parameter and the first preset rule.

[0230] Step 302A3: The UE determines the first transmission power based on the second parameter.

[0231] The first preset rule includes any one of the following:

[0232] Rule 1: Select the maximum, minimum, any, or average parameter value from each parameter of the first parameter to obtain the second parameter;

[0233] Rule 2: Based on at least one of the third parameter and the measurement results of the first downlink signal selected by the UE, select a parameter value from each parameter of the first parameter to obtain the second parameter.

[0234] For a description of the third parameter, please refer to the relevant description in the above embodiments. To avoid repetition, it will not be repeated here.

[0235] In some embodiments of this application, the first parameter generally includes a parameter, which can save transmission resources and simplify the computing power of the UE before sending the first signal to the second device based on the first parameter, such as saving the computing power of calculating the transmission power of the first signal.

[0236] For example, if the first parameter includes a first offset value, and the first offset value consists of multiple PL offsets, then: the UE can use the largest PL offset among these multiple PL offsets as the second parameter. Alternatively, the UE can select one PL offset from the multiple PL offsets as the second parameter based on the received power of the first downlink signal.

[0237] It should be noted that if the first parameter is configured with a parameter and a value of that parameter is configured, the UE can directly use that parameter value as the second parameter without having to select it.

[0238] Thus, since a second parameter for determining the first transmission power can be selected from the first parameter based on the first parameter and the first preset rule, when the first parameter includes multiple parameter values ​​of a class of parameters, the UE can calculate the first transmission power using one of these parameter values ​​based on the first preset rule. Therefore, on the one hand, this simplifies the calculation required for the UE to determine the first transmission power, and on the other hand, it ensures that the UE can determine the first transmission power more accurately. This increases the probability that the UE can successfully transmit the first signal to the second device.

[0239] The following describes, by way of example, a method for the UE to determine the first transmission power of the first signal based on the first parameter under different first parameters.

[0240] a) When the first parameter is PL offset, the UE can measure the first path loss between itself and the first device based on the first downlink signal, and add one of the PL offsets in the first parameter to obtain the second path loss between the UE and the first device. Thus, the UE can calculate the transmission power of the first signal based on the second path loss.

[0241] For example, when the first signal is a PRACH signal, the first transmission power of the first signal can be expressed as: P PRACH,b,f,c (i,k)=min{P CMAX,f,c (i),P PRACH,target,f,c (k)+PL b,f,c +PL offset (k)}[dBm].

[0242] Where k represents the index of the first downlink signal (e.g., SSB index), PL offset (k) represents the offset of the estimated path loss value for the first path loss (by default, the value is 0, in which case PL can be omitted from the above formula). offset (k) this item), P PRACH,target,f,c (k) represents the target received power of the second device (by default, it is the same as the target received power of the reference device; when they are the same, it can be directly written as P).PRACH,target,f,c ).

[0243] For example, when the first signal is a PUSCH signal, the transmission power of the first signal can be expressed as:

[0244] Where k represents the index of the first downlink signal (e.g., SSB index), PL offset (k) represents the offset of the estimated path loss value for the first path loss (by default, the value is 0, in which case PL does not need to be reflected in the formula). offset (k) this term), α b,f,c (j,k) represents the power compensation parameter (which can also be expressed as the offset value of the success rate compensation parameter, i.e., α). b,f,c (j,k)=α b,f,c (j)+Δα(k)), P O_PUSCH,b,f,c (k,j) represents the power parameters of the second device (which can indicate the target received power of the second device); α(kΔ) represents the offset value of the power compensation parameter, α b,f,c (j) represents the power compensation parameter of the first device.

[0245] Wherein, if the first signal is the MsgA PUSCH signal, then j = 0, and the transmission power of the first signal can be expressed as:

[0246] Among them, P O_PRE (k)+Δ MsgA_PUSCH The power parameter P of the second device is indicated. O_PUSCH,b,f,c (k,j), P O_PRE (k) represents the target received power of the MsgA PUSCH signal.

[0247] b) When the first parameter is the offset value of the target received power of the first signal, the UE obtains the first path loss between the UE and the first device based on the first downlink signal. The UE can determine the target received power of the first signal based on the target received power when the first device is a receiving device and the offset value of the target received power of the first signal. The UE calculates the transmission power of the first signal based on the first path loss and the target received power of the first signal.

[0248] For example, when the first signal is a PRACH signal, the transmission power of the first signal can be expressed as: P PRACH,b,f,c (i,k)=min{P CMAX,f,c (i),P PRACH,target,f,c +ΔP target (k)+PL b,f,c [dBm];

[0249] Where k represents the first downlink signal index (e.g., SSB index), ΔP target (k) represents the offset value of the target received power of the first signal (by default, the value is 0, in which case ΔP can be omitted from the formula). target (k) this item), P PRACH,target,f,c This indicates the target received power of the first device.

[0250] For example, when the first signal is MsgA PUSCH, then j = 0, and the transmission power of the first signal can be expressed as:

[0251] Where k represents the index of the first downlink signal (e.g., SSB index), PO_PRE(k) represents the target received power of the MsgA PUSCH signal, and ΔP target (k) represents the offset value of the target received power of the first signal (by default, the value is 0, in which case ΔP can be omitted from the formula). target (k) This item).

[0252] c) When the first parameter is the offset value of the Nominal power, the UE obtains the first path loss between the UE and the second device based on the first downlink signal, and calculates the transmission power of the first signal based on the first path loss and the offset value of the Nominal power.

[0253] For example, when the first signal is a PRACH signal, the transmission power of the first signal can be expressed as: P PRACH,b,f,c (i,k)=min{P CMAX,f,c (i),P PRACH,target,f,c +ΔP target (k)+PL b,f,c [dBm].

[0254] Where k represents the first downlink signal index (e.g., SSB index), ΔP target (k) represents the offset value of the target received power of the first signal (by default, the value is 0, in which case ΔP can be omitted from the formula). target (k) this item), P PRACH,target,f,c This indicates the target received power of the first device.

[0255] For example, when the first signal is the MsgA PUSCH signal, then j = 0, and the transmission power of the first signal can be expressed as:

[0256] Where k represents the first downlink signal index (e.g., SSB index), P O_PRE (k) represents the target received power of the MsgA PUSCH signal, ΔPtarget (k) represents the offset value of the target received power of the first signal (by default, the value is 0, in which case ΔP can be omitted from the formula). target (k) This item).

[0257] d) When the first parameter is a Nominal power offset value, the UE obtains the first path loss between the UE and the first device based on the first downlink signal, and determines the transmission power of the first signal based on the first path loss and the Nominal power offset value.

[0258] For example, when the first signal is a PUSCH signal, the transmission power of the first signal can be expressed as:

[0259] Where k represents the first downlink signal index (e.g., SSB index), α b,f,c (j) represents the power compensation parameter, ΔP nominal (k) represents the Nominal power offset value (by default, the value is 0, and this term can be omitted from the formula).

[0260] e) When the first parameter is the offset value of the transmission power of the first signal, the UE measures the first path loss between itself and the first device (referring to the network-side device that sends the first parameter) based on the first downlink signal, calculates the third transmission power based on the first path loss, and then adds the offset value of the transmission power of the first signal to the third transmission power to obtain the transmission power of the first signal.

[0261] For example, when the first signal is a PRACH signal, the transmission power of the first signal can be expressed as: P PRACH,b,f,c (i,k)=min{P CMAX,f,c (i),P PRACH,target,f,c (k)+PL b,f,c +P offset (k)} [dBm].

[0262] Where k represents the first downlink signal index (e.g., SSB index), P offset (k) represents the offset value of the transmission power of the first signal (by default, the value is 0, in which case P can be omitted from the formula). offset (k) this item), P PRACH,target,f,c (k) represents the target received power of the second device (by default, it is the same as the target received power of the first device; when they are the same, it can be directly written as P). PRACH,target,f,c (i.e., the target receiving power of the first device);

[0263] For example, when the first signal is a PUSCH signal, the transmission power of the first signal can be expressed as:

[0264] Where k represents the first downlink signal index (e.g., SSB index), P offset (k) represents the offset value of the transmission power of the first signal (by default, the value is 0, in which case P can be omitted from the formula). offset (k) this term), α b,f,c (j) represents the power compensation parameter, P O_PUSCH,b,f,c (k,j) represents the power parameters of the second device (which can indicate the target received power of the second device);

[0265] Wherein, if the first signal is the MsgA PUSCH signal, then j = 0, and the transmission power of the first signal can be expressed as:

[0266] Where k represents the first downlink signal index (e.g., SSB index), P O_PRE (k)+Δ MsgA_PUSCH P represents O_PUSCH,b,f,c (k,j), P O_PRE (k) represents the target received power of the MsgA PUSCH signal; P offset (k) represents the offset value of the transmission power of the first signal (by default, the value is 0, in which case P can be omitted from the formula). offset (k) This item).

[0267] f) When the first parameter is the offset value of the power deviation between the Msg3 PUSCH signal and the preamble, the UE measures the first path loss between itself and the device (referring to the network-side device that sends the first information) based on the first downlink signal, adds the offset value, and calculates the transmission power of the first signal (Msg3 PUSCH) based on the path loss and the offset value.

[0268] For example, when the first signal is the Msg3 PUSCH signal, the transmission power of the first signal can be expressed as:

[0269] Where k represents the first downlink signal index (e.g., SSB index), P O_PRE (k) represents the target received power of the Msg3 PUSCH signal, δ Msg3 (k) represents the offset value of the power deviation between Msg3 PUSCH and preamble.

[0270] g) When the first parameter is the offset value of the MsgA PUSCH signal and the preamble power deviation, the UE measures the first path loss between itself and the first device (referring to the network-side device that sends the first information) based on the first downlink signal, adds the first parameter, and calculates the transmission power of the first signal (i.e., the MsgA PUSCH signal) based on the first path loss and the first parameter.

[0271] For example, when the first signal is the MsgA PUSCH signal, the transmission power of the first signal can be expressed as:

[0272] Where k represents the first downlink signal index (e.g., SSB index), P O_PRE (k) represents the target received power of the Msg3 PUSCH signal, δ MsgA (k) represents the offset value of the power deviation between the Msg3 PUSCH signal and the preamble.

[0273] h) When the first parameter is a power compensation offset value, the UE measures the first path loss between itself and the first device (referring to the network-side device that sends the first information) based on the first downlink signal, and calculates the transmission power of the first signal based on the first path loss and the power compensation offset value in the first parameter (such as the offset value of parameter α).

[0274] For example, when the first signal is a PUSCH signal, the transmission power of the first signal can be expressed as:

[0275] Where k represents the first downlink signal index (e.g., SSB index), α b,f,c (j,k) represents the power compensation parameter, which can be expressed as the offset value of the power compensation parameter, i.e., α. b,f,c (j,k)=α b,f,c (j)+Δα(k), P O_PUSCH,b,f,c (k,j) represents the power parameters of the first device (which can indicate the target received power of the first device);

[0276] Wherein, if the first signal is the MsgA PUSCH signal, then j = 0, and the transmission power of the first signal can be expressed as:

[0277] Where k represents the first downlink signal index (e.g., SSB index), P O_PRE (k)+Δ MsgA_PUSCH P represents O_PUSCH,b,f,c (k,j), P O_PRE (k) represents the target received power of the MsgA PUSCH signal.

[0278] For explanations of the remaining formula terms in a) to g) above, please refer to the relevant descriptions in the glossary section above.

[0279] The second possible implementation: The UE can determine the uplink transmission resources of the first signal based on the first parameter.

[0280] In some embodiments of this application, step 302 may include steps 302C and 302D.

[0281] Step 302C: The UE selects the first downlink signal based on the first parameter.

[0282] Step 302D: The UE sends a first signal to the second device through the uplink transmission resources of the second device associated with the first downlink signal.

[0283] In some embodiments of this application, the UE can measure the downlink signal and select a first downlink signal based on the measurement result of the downlink signal and a first parameter.

[0284] In some embodiments of this application, uplink transmission resources may include at least one of the following: time domain resources, channel resources, frequency domain resources, beam resources, etc.

[0285] In some embodiments of this application, the channel resources may include at least one of the following: PRACH resources, PUCCH resources, and PUSCH resources.

[0286] In some embodiments of this application, the PRACH resource may include at least one of the following: RO resource, preamble resource, PRACH scrambling sequence, and PRACH sequence interleaving method resource.

[0287] It is understood that the PRACH in the embodiments of this application may include the transmission channel of the uplink signal in the first step of the random access procedure.

[0288] The uplink signals in the first step of the random access process may include: Msg1, PRACH signal, preamble, MsgA, MsgA PRACH signal, MsgA PUSCH signal, wake-up signal (WUS), sensing signal, or SRS signal that triggers a third signal, Msg3 PUSCH signal, data transmission channel signal in idle or inactive state, RACH-based small data transmission (RA-SDT) signal, configured grant (CG) PUSCH signal for serial data transport (SDT), CG PUSCH for RACH less handover, CG PUSCH for LTM (such as layer L1 or L2 - triggered mobility) cell switching signal, and at least one of the following in random access: PUCCH signal or SRS signal. The third signal may include any of the following: SSB, signal carrying MIB, signal carrying SIB1, or signal carrying other system messages.

[0289] In some embodiments of this application, triggering a third signal may include: waking up, requesting, or activating a third signal.

[0290] In some embodiments of this application, a portion of the downlink signals or a group of downlink signals sent by the first device to the UE can be associated with the uplink transmission resources of the uplink receiving device. Thus, the UE can select a first downlink signal from these downlink signals based on a first parameter, and send the first signal to the second device through the uplink transmission resources of the second device associated with the first downlink signal.

[0291] In some embodiments of this application, the UE selecting a first downlink signal based on a first parameter can be understood as: the UE selecting a downlink signal associated with the uplink resources of the uplink receiving device based on the first parameter.

[0292] In some embodiments of this application, the UE can select a first downlink signal based on a downlink signal selection threshold in the first parameter.

[0293] In some embodiments of this application, the UE selecting the first downlink signal based on the first parameter may include: the UE selecting the first downlink signal based on the first parameter and the third parameter.

[0294] The third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold; wherein each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; wherein the at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter. In some embodiments of this application, the above-mentioned third parameter can be used for at least one of the following:

[0295] Used to determine whether to use the first parameter to determine the transmission power of the first signal;

[0296] Used to select downlink signals, that is, the UE can select downlink signals and select the second parameter based on the same or the same set of thresholds. In other words, the downlink signal selection threshold is configured to the UE through the third parameter.

[0297] For example, the third parameter is the measurement threshold or threshold offset value of the first downlink signal; specifically,

[0298] The third parameter may be a measurement result threshold for the first downlink signal introduced to determine whether to use the first offset value. The UE determines the value of the first offset value used when calculating the transmission power of the first signal based on the measurement threshold.

[0299] Alternatively, the third parameter may be a measurement result threshold of the first downlink signal introduced to determine whether the first signal is generated using the first parameter, so that the UE can determine whether the first signal is generated using the first parameter to calculate the transmission power based on the measurement result threshold;

[0300] Alternatively, the third parameter can be a measurement result threshold or threshold offset value of the first downlink signal introduced for SSB selection. The UE selects the SSB based on the measurement threshold (which can be a threshold value obtained by superimposing the SSB selection threshold and the threshold offset) and determines whether to use the configured first parameter (e.g., PL offset) to calculate the transmission power of the first signal.

[0301] For example, a set of SSBs can be specifically configured for UL-only TRP. The UE selects one or more of these SSBs according to the measurement threshold configured in the third parameter and sends the first signal using the parameters configured in the UL-only TRP.

[0302] Thus, since the UE can select the first downlink signal based on the first parameter and the third parameter, the accuracy of the UE in selecting the first downlink signal can be improved.

[0303] In some embodiments of this application, step 302 described above can be implemented by step 302E described below.

[0304] Step 302E: During the multiple transmissions of the first signal using different beams, the UE, based on the first parameter, sequentially uses M groups of first uplink transmission resources to send the first signal to the second device.

[0305] Among them, the first uplink transmission resources of the above M groups are associated with the same downlink signal index, and M can be a positive integer.

[0306] In some embodiments of this application, each of the M groups of first uplink transmission resources can be used to transmit the same first signal. Alternatively, in each group of first uplink transmission resources, every N first uplink transmission resources uses the same beam, where N can be a positive integer.

[0307] For example, if the UE uses different beams to transmit the first signal multiple times, during the process of the UE transmitting the first signal multiple times, the UE can choose to associate the M group RO with the same SSB index to send the first signal (such as a preamble sequence). The transmission power of the first signal is determined by the first parameter, or by the first parameter and the second parameter together, or by the first parameter, the second parameter and the third parameter together.

[0308] In some embodiments of this application, "in each group of first uplink transmission resources, every N first uplink transmission resources use the same beam" may include:

[0309] Each group of first uplink resources is divided into at least one subgroup, and each subgroup includes N first uplink transmission resources, with the first uplink transmission resources in each subgroup using the same beam.

[0310] The order in which the first uplink transmission resource in each group is used is not limited.

[0311] For example, suppose each group of first uplink transmission resources includes 9 first uplink transmission resources, and the usage order of these 9 first uplink transmission resources is arranged as: resource 1 to resource 9. Then, if N=3, the UE can randomly divide these 9 first uplink transmission resources into 3 groups; or it can randomly divide these 9 first uplink transmission resources into 3 groups according to the usage order of these 9 first uplink transmission resources.

[0312] In some embodiments of this application, the sum of the number of times the UE transmits the first signal multiple times is M.

[0313] In some embodiments of this application, the first uplink transmission resources of the M groups mentioned above may be the same or different.

[0314] In some embodiments of this application, during multiple transmissions of the first signal by the UE, the first transmission power of each first signal can be determined by a first parameter, or by a combination of the first parameter and a third parameter, or by a combination of the first parameter, the third parameter, and the third parameter.

[0315] Thus, during the multiple transmissions of the first signal by the UE using different beams, since the UE can use M groups of first uplink transmission resources based on the first parameters to send the first signal to the second device, the success rate of the UE sending the first signal multiple times can be improved.

[0316] It should be noted that the above embodiments are illustrated by the example of the UE choosing to execute the first and second possible implementation methods. In actual implementation, the UE can execute the first and second possible implementation methods, that is, the UE determines the transmission power of the first signal according to the first parameter and selects the uplink transmission resources of the first signal according to the first parameter.

[0317] In some embodiments of this application, before the UE sends a first signal to the second device based on a first parameter, the UE can select a second device from at least one uplink receiving device according to the measurement result of the first downlink signal selected by the UE and the second parameter.

[0318] In the signaling method provided in this application embodiment, since the UE can receive at least one of the following first parameters sent by the first device: a first offset value, an index value of the first offset value, a target received power of the first signal, a nominal power, a power compensation parameter, a power deviation between the Msg3 PUSCH signal and the preamble, a power deviation between the MsgA PUCSH signal and the preamble, a maximum transmit power of the first signal, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold, the UE can use the first parameters to send the first signal to the uplink receiving device. That is, the UE indirectly obtains the parameters required to send the signal to the uplink receiving device through the first device, thereby ensuring that the UE accurately signals to the second device.

[0319] In some embodiments of this application, before step 302 above, the signal transmission method provided in the embodiments of this application may further include step 304 below, and step 302 above can be implemented by step 302F below.

[0320] Step 304: The UE determines the first uplink transmission resource based on the fourth parameter and the first configuration information sent by the first device.

[0321] The fourth parameter can be used to indicate the cell information of at least one cell associated with the first parameter, and the first configuration information can be used to indicate the uplink transmission resources of the at least one cell, which is different from the UE's primary cell.

[0322] In some embodiments of this application, the cell information can be any of the following: the cell identifier or index, or the cell's physical cell identifier (PCI).

[0323] In some embodiments of this application, the first configuration information may indicate the uplink signal resources of at least one cell, or indicate the uplink signal resources and synchronization signal resources of at least one cell.

[0324] For example, the first configuration information indicates the SSB index of the uplink transmission resources of the neighboring cell TRPs associated with the UE and the PRACH resources of these neighboring cell TRPs.

[0325] For example, the first configuration information indicates the uplink transmission resources of the UE's neighboring cells.

[0326] For example, the first configuration information indicates the uplink transmission resources of the uplink receiving devices in the neighboring cells of the UE.

[0327] Step 302E: Based on the first parameter, the UE sends a first signal to the second device through the first uplink transmission resource.

[0328] In some embodiments of this application, the UE can determine the transmission power of the first signal based on the first parameter, and then use the transmission power to send the first signal to the second device on the first uplink transmission resource.

[0329] In some embodiments of this application, the transmission power of the first signal can be determined by at least one of the first parameter, the third parameter, and the fourth parameter. For a description of the third parameter and the fourth parameter, please refer to the relevant descriptions in the above embodiments.

[0330] Thus, since the fourth parameter can indicate the cell information of at least one cell associated with the first parameter, and the first configuration information can indicate the uplink transmission resources of the at least one cell, it can be ensured that the first uplink transmission resources for transmitting the first signal can be quickly and accurately determined based on the first configuration information and the fourth parameter.

[0331] In some embodiments of this application, prior to step 302 above, the signal transmission method provided in this application may further include the following steps:

[0332] Step A: The first device sends a third parameter to the UE;

[0333] Step B: The UE receives the third parameter.

[0334] For further descriptions of the third parameter, please refer to the relevant descriptions of the third parameter in the above embodiments. To avoid repetition, they will not be repeated here.

[0335] In some embodiments of this application, prior to step 302 above, the signal transmission method provided in this application may further include:

[0336] Step C: The first device sends the fourth parameter and the first configuration information to the UE;

[0337] Step D: The UE receives the fourth parameter and the first configuration information.

[0338] For further descriptions of the first configuration information and the fourth parameter, please refer to the relevant descriptions in the above embodiments. To avoid repetition, they will not be repeated here.

[0339] In some embodiments of this application, after receiving the third parameter and the first configuration information, the UE can determine the first uplink transmission resource of the first signal based on the third parameter and the first configuration information associated with the first parameter, and use the first transmission power determined by the UE based on the first parameter on the first uplink transmission resource to send the first signal to the second device.

[0340] In some embodiments of this application, the first device may carry the first configuration information and the fourth parameter in the same signal, or may carry the first configuration information and the fourth parameter in different signals.

[0341] Furthermore, when the first device carries the first configuration information and the fourth parameter in different signals, the order in which the first device sends the signal carrying the first configuration information and the signal carrying the fourth parameter is not limited.

[0342] In some embodiments of this application, the UE may obtain the fourth parameter or the first configuration information based on system messages or downlink RRC signaling.

[0343] For example, in the CFRA procedure triggered by the PDCCH command, the UE receives downlink control information from the network-side device, such as DCI Format 1_0, to obtain first configuration information (such as the SSB and PRACH resources of the neighboring cells of the UE's primary cell) and fourth parameters (such as the neighboring cell PCI associated with the PL offset).

[0344] For example, the UE receives system messages from the network side to obtain the first configuration information, receives downlink control information from the network side to obtain the fourth parameter;

[0345] For example, the UE receives a system message sent by the network-side device to obtain the first configuration information and the fourth parameter.

[0346] For a detailed description of the fourth parameter and the first configuration information, please refer to the relevant descriptions of the fourth parameter and the first configuration information in the above embodiments. To avoid repetition, they will not be repeated here.

[0347] It should be noted that the first device can send the first parameter, the third parameter, the fourth parameter and the first configuration information simultaneously, or the first device can send the first parameter, the third parameter, the first configuration information and the fourth parameter separately.

[0348] When the first device sends the first parameter, the third parameter, the fourth parameter and the first configuration information respectively, the order in which the first device sends the first parameter, the third parameter, the fourth parameter and the first configuration information is not limited.

[0349] For example, the first device can send the first parameter, the third parameter, the fourth parameter, and the first configuration information in sequence.

[0350] For example, the first device can send the fourth parameter, the first configuration information, the third parameter, and the first parameter in sequence.

[0351] For example, the first device can simultaneously send at least two of the first parameter, the third parameter, the fourth parameter, and the first configuration information.

[0352] When the first device simultaneously sends the first parameter, the third parameter, the fourth parameter, and the first configuration information, the first device can carry the first parameter, the third parameter, the fourth parameter, and the first configuration information through the same signal, or the first device can carry the first parameter, the third parameter, the fourth parameter, and the first configuration information through different parameters, for example, by carrying the first parameter, the third parameter, the fourth parameter, and the first configuration information through the first information.

[0353] For example, the UE can obtain the PL offset (i.e., the first parameter) corresponding to the network-side equipment of the neighboring cell (such as the UL-only TRP of the neighboring cell) and the RSRP threshold of the first downlink signal of the current cell corresponding to the PL offset of the neighboring cell (the threshold is the downlink signal measurement threshold of the TRP in the current cell) (i.e., the third parameter) based on RRC signaling, and obtain the fourth parameter to determine which cell the PL offset and RSRP threshold are used for.

[0354] In some embodiments of this application, before step 300 above, the signal transmission method provided in the embodiments of this application may further include step 305 below.

[0355] Step 305: The UE sends a second signal.

[0356] The second signal can be used to measure the path loss between the UE and the uplink receiving device.

[0357] It is understood that after the UE sends the second signal, the first device, the second device, or other network-side devices within the receiving range of the second signal can receive the second signal. Then, the network-side device can measure the path loss between the UE and the uplink receiving device, and can send the measured path loss measurement result to the first device, so that the first device can send the first parameter to the UE based on the path loss measurement result.

[0358] In some embodiments of this application, the second signal is at least one of the following: an SRS signal, or other uplink measurement reference signals.

[0359] In some embodiments of this application, after step 305 above, the signal transmission method provided in the embodiments of this application may further include 306, and step 300 above can be implemented by step 300A below.

[0360] Step 308: The first device receives the second signal sent by the UE.

[0361] The second signal can be used to measure the path loss between the UE and the uplink receiving device.

[0362] In some embodiments of this application, the second signal may be any of the following: an SRS signal, or any possible uplink measurement reference signal.

[0363] Step 300A: The first device sends the first parameter to the first device based on the second signal.

[0364] Thus, since the first device can send the first parameter to the first device based on the second signal sent by the UE, that is, the first device sends the first parameter to the UE when the UE needs to send a signal to the uplink receiving device, it can not only ensure that the UE can achieve uplink data transmission with the uplink receiving device, but also save the signaling overhead of the first device and the second device, thus saving transmission resources.

[0365] In some embodiments of this application, the second transmission power of the second signal can be indicated by second configuration information or determined based on a second preset rule. The second preset rule includes at least one of the following:

[0366] Rule 3: Transmit the second signal using the UE's maximum transmit power;

[0367] Rule 4: Determined based on the path loss of the downlink signal and the target received power;

[0368] Rule 5: Determined based on the target received power, the second offset value, and the path loss corresponding to the downlink signal.

[0369] In some embodiments of this application, the downlink signal in Rule 4 and Rule 5 can be any of the following: any downlink signal sent by the first device, or a downlink signal sent by another downlink device and associated with the uplink transmission resources of the first device.

[0370] For example, the downlink signal most recently transmitted by the first device, and the downlink signal most recently received by the UE.

[0371] In some embodiments of this application, the path loss corresponding to the downlink signal can be: the downlink path loss between the UE and the device that sends the downlink signal.

[0372] In some embodiments of this application, the second configuration information may be carried in downlink control information carried by RRC signaling or PDCCH signal, or the second configuration information may be carried in a signal carried by paging message or WUS signal.

[0373] Thus, since the second transmission power of the second signal can be indicated by the second configuration information or determined based on the second preset rule, the flexibility of the UE in determining the transmission power of the second signal can be improved.

[0374] Thus, since the UE can trigger the network-side device, such as the first device or the second device, to measure the path loss between the UE and the uplink receiving device by sending a second signal, the measurement power consumption of the network-side device can be reduced compared to the network-side device's periodic or spontaneous path loss measurement method.

[0375] In some embodiments of this application, before step 305 above, the signal transmission method provided in the embodiments of this application may further include the following steps 306 and 307.

[0376] Step 306: The first device sends the second configuration information to the UE.

[0377] Step 307: The UE receives the second configuration information.

[0378] The second configuration information can be used to indicate at least one of the uplink transmission resources, transmission power, and transmission period of the second signal.

[0379] It is understood that after the UE receives the second configuration information sent by the first device, the UE can use at least one of the uplink transmission resources, transmission power and transmission period indicated by the second configuration information to send the second signal in order to improve the success rate of the second signal transmission.

[0380] For example, assuming the second signal is an SRS signal, and the second configuration information indicates the first transmission period and the second transmission power, the UE can transmit the SRS signal according to the first transmission period and the second transmission power.

[0381] Thus, since the first device can send the UE second configuration information indicating at least one of the uplink transmission resources, transmission power, and transmission period of the second signal, the probability of the UE successfully transmitting the second signal can be increased.

[0382] The signal transmission method provided in the embodiments of this application will be described below with reference to the accompanying drawings and specific examples.

[0383] Example 1: When the first parameter includes the path loss offset value between the UE and the uplink receiving device, and the third parameter includes the RSRP measurement threshold, the signal transmission method provided in this application embodiment can be used for the initial access procedure of the UE in the idle state. Referring to Figure 4, the flow of the signal transmission method provided in this application embodiment is as follows:

[0384] 1. The UE detects the SSB signal sent by the network side TRP0 and selects SSB#1 for initial access based on the measurement results of the SSB signal; it can be understood that the UE can select the SSB signal based on the downlink signal selection threshold.

[0385] 2. The UE obtains the first and third parameters associated with SSB#1 from the system message. The first parameter includes K = two path loss offsets, PL offset1 and PL offset2. The third parameter includes two RSRP measurement thresholds T1 and T2 (assuming T1 > T2), associated with or corresponding to PL offset1 and PL offset2, respectively. The correspondence between the parameters in the first and third parameters indicates that the network side has deployed two TRPs capable of receiving the UE's uplink signal in the direction or range of SSB#1; for example, these could be UL-only TRPs. Based on the relationship between the RSRP of SSB#1 and the RSRP measurement thresholds indicated in the third parameter, the UE determines which TRP to access and uses the corresponding PL offset to calculate the power of the transmitted PRACH signal (i.e., the first signal).

[0386] Specifically, the execution process on the UE side is as follows:

[0387] (1) If the RSRP of SSB#1 measured by the UE is greater than T1, that is, the UE does not meet the first preset condition, the UE does not use any PL offset, that is, the UE does not consider sending a signal to the UL-only TRP, and the UE can use the downlink path loss PL corresponding to SSB#1. b,f,c Calculate the transmission power of the PRACH signal, and use this power to transmit the PRACH signal, connecting it to TRP0. The transmission power P of the first signal... PRACH,b,f,c It can be represented as: P PRACH,b,f,c =min{P CMAX,f,c,P PRACH,target,f,c +PL b,f,c}

[0388] (2) If the RSRP of SSB#1 measured by the UE is less than or equal to T1 and greater than T2, it means that the UE meets the first preset condition. Then the UE can use the downlink path loss PL corresponding to SSB#1 as a basis. b,f,c Calculate the first transmission power of the PRACH signal using PL offset1, and transmit the PRACH signal to TRP1 using the first power to access TRP1. Wherein, the first transmission power P... PRACH,b,f,c P can be calculated using the following formula: PRACH,b,f,c =min{P CMAX,f,c ,P PRACH,target,f,c +PL b,f,c +PL offset1};

[0389] Among them, P CMAX,f,c P represents the maximum transmission power allocated to the UE on carrier f in the UE's serving cell C. PRACH,target,f,c It is the target received power of the PRACH signal on the active UL BWP b of the carrier f on the serving cell C of the UE, PL b,f,c This represents the path loss of the active UL BWP b of the carrier f of the DL RS associated with PRACH transmission on the active DL BWP of the serving cell C.

[0390] (3) If the RSRP of SSB#1 measured by the UE is less than or equal to T2, then the UE uses PL offset2 based on the downlink path loss PL of SSB#1. b,f,c Calculate the PRACH signal transmission power using PL offset2, and use the power to transmit the PRACH signal, which is then connected to TRP2;

[0391] The transmission power is P PRACH,b,f,c =min{P CMAX,f,c ,P PRACH,target,f,c +PL b,f,c +PL offset2};

[0392] It should be noted that in Example 1, P CMAX,f,c P represents the maximum transmission power allocated to the UE on carrier f in the UE's serving cell C. PRACH,target,f,c It is the target received power of the PRACH signal on the active UL BWP b of the carrier f on the serving cell C of the UE, PL b,f,c This represents the path loss of the active UL BWP b of the carrier f of the DL RS associated with PRACH transmission on the active DL BWP of the serving cell C.

[0393] It is understandable that Example 1 can be applied to the initial access of a UE in idle, connected, or disconnected states.

[0394] It should be noted that the following example illustrates the UE accessing TRP0: SSB#1 RSRP > T1; UE accessing TRP1: T2 < SSB#1 RSRP ≤ T1; UE accessing TRP2: SSB#1 RSRP ≤ T2. In actual implementation, the following can also be used: SSB#1 RSRP ≥ T1; UE accessing TRP0: T2 ≤ SSB#1 RSRP < T1; UE accessing TRP1: TSB#1 RSRP < T2; UE accessing TRP2: SSB#1 RSRP < T2.

[0395] Thus, since the UE determines the transmission power of the PRACH signal based on the path loss offset value that can be configured in TRP0 and the corresponding RSRP measurement threshold, the UE can initiate random access to the UL-only TRP with lower power, which is beneficial for UE energy saving.

[0396] Example 2: When the first parameter includes the target received power of the first signal and the third parameter includes the RSRP measurement threshold, the signal transmission method provided in this application embodiment can be used for the initial access procedure of the UE in the idle state. Referring to Figure 5, the flow of the signal transmission method provided in this application embodiment is as follows:

[0397] 1. The UE detects the SSB signal sent by TRP0 on the network side and selects SSB#1 for initial access based on the measurement results of the SSB signal;

[0398] 2. The UE obtains the first and third parameters associated with SSB#1 from the system message. The first parameter includes K = 3 target received powers, namely targetReceivePower_0, targetReceivePower_1, and targetReceivePower_2. The third parameter includes 2 RSRP measurement thresholds, T1 and T2 (assuming T1>T2), which are associated with targetReceivePower_1 and targetReceivePower_2, respectively. The relationship between the parameters in the third parameter and the parameters in the first parameter indicates that the network side has deployed 2 TRPs (e.g., UL-only TRPs) in the direction or range of SSB#1 that can receive the UE's uplink signal. The UE determines which TRP to access based on the relationship between the RSRP of SSB#1 and the RSRP measurement thresholds indicated in the third parameter, and uses the corresponding target received power to calculate the power to transmit the PRACH signal (i.e., the first signal).

[0399] Specifically, the UE-side process is as follows:

[0400] (1) If the RSRP of SSB#1 measured by the UE is greater than T1, then the UE calculates the transmission power of the PRACH signal based on targetReceivePower_0, and uses this transmission power to transmit the PRACH signal and access TRP0; this transmission power P PRACH,b,f,c It can be represented as: P PRACH,b,f,c =min{P CMAX,f,c ,targetReceivePower_0+PL b,f,c}

[0401] (2) If the UE measures that the SSB#1 received RSRP ≤ T1 and is greater than T2, the UE calculates the PRACH signal transmission power based on targetReceivePower_1 and uses the power to transmit the PRACH signal and access TRP1;

[0402] The transmission power is P PRACH,b,f,c =min{P CMAX,f,c ,targetReceivePower_1+PL b,f,c};

[0403] (3) If the UE measures the SSB#1 received RSRP≤T2, then the UE calculates the PRACH signal transmission power based on targetReceivePower_2 and uses the power to transmit the PRACH signal to access TRP2;

[0404] The transmission power is P PRACH,b,f,c =min{P CMAX,f,c ,targetReceivePower_2+PL b,f,c};

[0405] It should be noted that in Example 2, PL b,f,c This represents the downlink path loss corresponding to the SSB1 signal measured by the UE; P CMAX,f,c This represents the maximum transmission power allocated to the UE on carrier f in the UE's serving cell C.

[0406] It is understandable that Example 2 can be applied to the initial access of a UE in idle, connected, or disconnected states.

[0407] It should be noted that, taking the example that the RSRP of SSB#1 > T1, the UE accesses TRP0; T2 < the RSRP of SSB#1 ≤ T1, the UE accesses TRP1; the RSRP of SSB#1 ≤ T2, the UE accesses TRP2. In actual implementation, it can also be that when the RSRP of SSB#1 ≥ T1, the UE accesses TRP0; T2 ≤ the RSRP of SSB#1 < T1, the UE accesses TRP0; the RSRP of SSB#1 < T2, the UE accesses TRP2.

[0408] In this way, since the UE can determine the transmission power of the PRACH according to the target receiving power configured by the network and the corresponding RSRP measurement threshold, it can initiate a random access to the UL-only TRP with a lower power, which is beneficial to the energy saving of the terminal.

[0409] Example 3: When the first parameter includes the PL offset, the third parameter includes the RSRP measurement threshold, and the fourth parameter indicates the PCI associated with the first parameter, the signal transmission method provided by the embodiments of the present application can be used for the mobility management of the UE in the connected state.

[0410] Referring to FIG. 6, the flow of the signal transmission method provided by the embodiments of the present application is as follows:

[0411] Assume that in the connected state, the UE is connected to cell A. The UE can receive the downlink RRC signaling of cell A and obtain the PRACH resource configuration (i.e., the first configuration information) of the adjacent cell B for transmitting a RACH signal to synchronize with cell B (before actual handover). Then:

[0412] 1. The UE detects the SSB signal transmitted by the network side TRP0 and selects SSB#1 for initial access according to the measurement result.

[0413] 2. In the initial access stage, referring to Table 1, the UE obtains the first parameter (path loss offset O1) and the third parameter (RSRP measurement threshold T1) associated with SSB#1 in the system information or RRC signaling. This association relationship indicates that within the range of cell A, a TRP1 (such as a UL-only TRP) that can receive uplink is deployed in the beam coverage direction of SSB#1 of TRP0. When the UE detects that the RSRP of SSB#1 of cell A < T1, it can calculate the transmission power of the PRACH signal using the PL offset O1 and transmit the PRACH signal with this transmission power to achieve the access of the UE to TRP1.

[0414] 3. In the connected state, referring to Table 1, the UE obtains the first parameter (path loss offset O2), the third parameter (RSRP measurement threshold T2), and the fourth parameter (additional PCI: cell B) of the neighboring cell cell B associated with SSB#1 from the RRC signaling. It means that there is an uplink-receivable neighboring cell TRP2 (e.g., it can be a UL-only TRP) deployed in the beam coverage direction of SSB#1 representing TRP0. Here, it is assumed that T2 < T1. Since TRP2 belongs to cell B, when the UE detects that the received RSRP of SSB#1 of cell A < T2, it can use the PL offset O2 to calculate the first transmission power of the PRACH signal, and use the PRACH resource of cell B (indicated by the first configuration information obtained from the downlink RRC signaling of cell A) and the first transmission power to send a PRACH signal to TRP2 of cell B to obtain synchronization with cell B in advance.

[0415] Table 1

[0416] Among them, the parameters {O1, T1} in Table 1 can be obtained based on system information or RRC signaling, and the parameters {O2, T2, Cell B} can be obtained based on RRC signaling (e.g., downlink control information).

[0417] Specifically, the specific signaling interaction process between the UE and the network side is shown in Figure 7, specifically as follows:

[0418] Step 71: The UE receives the first downlink signal from Cell A-TRP0.

[0419] Among them, the UE is connected to cell A, receives and selects the SSB signal from cell A-TRP0. Among them, the UE can be connected to Cell A based on the selected SSB#1.

[0420] Step 72: The UE receives the first information (carried by RRC signaling) from Cell A-TRP0.

[0421] Among them, the first information may include the first parameter, and the first configuration information may be carried by the same or different RRC signaling.

[0422] Among them, the RRC signaling can be a DCI message. Obtain the first parameter (i.e., O2), the third parameter (i.e., T2), and the fourth parameter (i.e., cell B) corresponding to TRP2 in cell B;

[0423] Among them, the first configuration information can be the PRACH resource configuration of the neighboring cell cell B of the UE, which is used to establish uplink synchronization with the neighboring cell.

[0424] Step 73: The UE determines whether the measurement result of the first downlink signal is greater than the RSRP measurement threshold T2.

[0425] If the RSRP of SSB#1 received by cell A-TRP0 measured by the UE is ≤ T2, then the UE calculates the first transmission power of the PRACH signal based on the first parameter, using the PL offset O2, and based on the downlink path loss PL b,f,c and O2 of SSB#1; where the first transmission power can be expressed as: P PRACH,b,f,c = min{P CMAX,f,c , P PRACH,target,f,c + PL b,f,c + O2}.

[0426] Step 74: The UE uses the first transmission power and the PRACH resources of cell B indicated by the first configuration information to send a PRACH signal to cell B-TRP2.

[0427] Among them, after the UE sends a PRACH signal to cell B-TRP2, the UE can establish uplink synchronization with TRP2.

[0428] It can be understood that "cell B" in this embodiment may represent any one or more cells different from this cell. In Example 3, PL b,f,c represents the downlink path loss corresponding to the SSB1 signal measured by the UE; P CMAX,f,c represents the maximum transmission power configured for the UE by the carrier f of the UE's serving cell C, and P PRACH,target,f,c is the target reception power of the PRACH signal on the active UL BWP b of the carrier f in the UE's serving cell C.

[0429] It should be noted that in Example 3, in the initial access stage, the RSRP of SSB#1 < T1, and the UE initiates access to TRP1; in the connected state, the RSRP of SSB#1 received by cell A-TRP0 ≤ T2, and the UE sends a PRACH signal to cell B-TRP2 to achieve synchronization with cell B in advance as an example. In actual implementation, it can also be: in the initial access stage, the RSRP of SSB#1 ≤ T1, and the UE initiates access to TRP1; in the connected state, the RSRP of SSB#1 received by cell A-TRP0 < T2, and the UE sends a PRACH signal to cell B-TRP2.

[0430] Thus, in connected mode, when the UE is located at the cell edge and cell handover may occur, the UE can send a PRACH signal to the TRP of the neighboring cell based on the measurement results of the SSB signal of its own cell and the PL offset configuration (i.e., the first parameter) of the UL only TRP of the neighboring cell, so as to obtain synchronization with the neighboring cell in advance and shorten the cell handover delay.

[0431] Example 4: When the first parameter includes the PL offset and the third parameter includes the RSRP measurement threshold, the signal transmission method provided in this application embodiment can be applied to the UE's initial access procedure based on MsgA. Referring to Figure 8, the flow of the signal transmission method provided in this application embodiment is as follows:

[0432] 1. The UE detects the SSB signal sent by TRP0 on the network side and selects SSB#1 for initial access based on the measurement results;

[0433] 2. The UE obtains the first and third parameters associated with SSB#1 from the system message. The first parameter includes K = 2 path loss offsets, namely PL offset1 and PL offset2. The third parameter includes 2 RSRP measurement thresholds T1 and T2 (assuming T1>T2), which are associated with PL offset1 and PL offset2 respectively. This indicates that the network side has deployed 2 TRPs (e.g., UL-only TRPs) in the direction / range of SSB#1 that can receive the UE's uplink signal. The UE determines which TRP to access based on the relationship between the received RSRP of SSB1 and the measurement thresholds indicated in the third parameter, and uses the corresponding PL offset to calculate the transmission power of the PRACH signal.

[0434] Specifically, the UE-side process is as follows:

[0435] (1) If the RSRP of SSB#1 measured by the UE is greater than T1, the UE does not use any PL offset, and thus the downlink path loss PL is based on SSB#1. b,f,c Calculate the transmit power of the PRACH signal and use this transmit power to transmit the PRACH signal to access TRP0; this transmit power P PRACH,b,f,c It can be represented as: P PRACH,b,f,c =min{P CMAX,f,c ,P PRACH,target,f,c +PL b,f,c};

[0436] (2) If the RSRP of SSB#1 measured by the UE is ≤ T1 and greater than T2, then the UE uses PL offset1 based on the downlink path loss PL of SSB#1. b,f,cCalculate the transmit power of the PRACH signal using PL offset1, and use this transmit power to transmit the PRACH signal and connect it to TRP1; this transmit power can be expressed as P PRACH,b,f,c =min{P CMAX,f,c ,P PRACH,target,f,c +PL b,f,c +PL offset1};

[0437] (3) If the RSRP of SSB#1 measured by the UE is less than or equal to T2, then the UE uses PL offset2 based on the downlink path loss PL corresponding to SSB#1. b,f,c Calculate the transmit power of the PRACH signal using PL offset2, and use this transmit power to transmit the PRACH signal and connect it to TRP2; this transmit power can be expressed as P PRACH,b,f,c =min{P CMAX,f,c ,P PRACH,target,f,c +PL b,f,c +PL offset2}.

[0438] It should be noted that in Example 4, PL b,f,c This represents the downlink path loss corresponding to the SSB1 signal measured by the UE; P CMAX,f,c P represents the maximum transmission power allocated to the UE on carrier f in the UE's serving cell C. PRACH,target,f,c It is the target received power of the PRACH signal on the active UL BWP b of the carrier f on the serving cell C of the UE.

[0439] It is understandable that Example 1 can be applied to the initial access of a UE in idle, connected, or disconnected states.

[0440] It should be noted that Example 4 illustrates the following scenarios: SSB#1 RSRP > T1, UE accesses TRP0; T2 < SSB#1 RSRP ≤ T1, UE accesses TRP1; SSB#1 RSRP ≤ T2, UE accesses TRP2. In actual implementation, the scenario can also be: SSB#1 RSRP ≥ T1, UE accesses TRP0; T2 ≤ SSB#1 RSRP < T1, UE accesses TRP0; SSB#1 RSRP ≤ T2, UE accesses TRP2. Alternatively, the scenario can be: SSB#1 RSRP ≥ T1, UE accesses TRP0; T2 ≤ SSB#1 RSRP < T1, UE accesses TRP1; SSB#1 RSRP < T2, UE accesses TRP2.

[0441] Thus, since the UE can determine the transmission power of the PRACH signal based on the offset value of the path loss configured by the network-side equipment and the corresponding RSRP measurement threshold, it can initiate random access to the UL-only TRP with lower power in idle state, which is beneficial for terminal energy saving.

[0442] Example 5: When transmitting SSB signals for multiple cells in a Single Frequency Network (SFN) manner, with the first parameter including PL offset and the third parameter including RSRP measurement threshold, the signal transmission method provided in this application embodiment can be applied to the initial access procedure of the UE. Referring to Figure 9, the signal transmission method provided in this application embodiment may include the following process:

[0443] 1. The UE detects the SSB signal sent by the network side and selects SSB#1 for initial access based on the measurement results of the SSB signal; among them, multiple TRPs (from different cells) on the network side can send the same SSB signal, such as the SSB1 signal, using the SFN method.

[0444] 2. The UE obtains the first and third parameters associated with SSB#1 from the system message. The first parameter includes K = 1 path loss offset PL offset1; the third parameter includes 1 RSRP measurement threshold T, which is associated with PL offset1. This indicates that the network side has deployed 1 TRP (e.g., a UL-only TRP) in the propagation direction or range of SSB#1 that can receive the UE's uplink signal. The UE determines which TRP to access based on the relationship between the RSRP of the SSB1 signal and the measurement threshold indicated in the third parameter, and uses the corresponding PL offset to calculate the power of the PRACH signal to be transmitted.

[0445] Specifically, the UE-side process is as follows:

[0446] (1) If the UE measures the received RSRP of SSB#1 as > T, the UE does not use any PL offset, and thus the UE's downlink path loss PL based on SSB1 is reduced. b,f,c Calculate the transmit power of the PRACH signal, and use this transmit power to transmit the PRACH signal and connect it to TRP0; this transmit power can be expressed as P. PRACH,b,f,c =min{P CMAX,f,c ,P PRACH,target,f,c +PL b,f,c};

[0447] (2) If the RSRP of SSB#1 measured by the UE is less than or equal to T, then the UE uses PL offset1 based on the downlink path loss PL corresponding to SSB#1. b,f,cCalculate the transmit power of the PRACH signal using PL offset1, and use this transmit power to transmit the PRACH signal and connect it to TRP1; this transmit power can be expressed as: P PRACH,b,f,c =min{P CMAX,f,c ,P PRACH,target,f,c +PL b,f,c +PL offset1};

[0448] It should be noted that in Example 5, PL b,f,c This represents the downlink path loss corresponding to the SSB1 signal measured by the UE; P CMAX,f,c P represents the maximum transmission power allocated to the UE on carrier f in the UE's serving cell C. PRACH,target,f,c It is the target received power of the PRACH signal on the active UL BWP b of the carrier f on the serving cell C of the UE.

[0449] It should be noted that in Example 5, as shown in Figure 9, the system architecture diagram illustrates how the UE determines the transmission power of the PRACH signal based on the first and third parameters. It is understandable that because TRP2 transmits the SSB1 signal using the SFN method, the RSRP of SSB1 measured by the UE as it moves away from TRP0 may first decrease and then increase. Therefore, the network side needs to configure a reasonable RSRP measurement threshold to indicate the area range corresponding to TRP1.

[0450] Specifically, as shown in Figure 9, if the RSRP measurement threshold configured for the UE by the network-side device is T", then after the distance between the UE and TRP0 exceeds D0, the RSRP of the SSB signal measured by the UE from TRP2 will be greater than T". This may cause the UE to believe that the connection with TRP0 is good, and thus continue to access TRP0, which may lead to signal transmission failure. To avoid UE misjudgment, the RSRP measurement threshold configured for the UE by the network-side device should be greater than T".

[0451] It is understandable that when multiple cells transmit downlink signals in SFN mode, the network-side equipment can configure a reasonable downlink signal selection threshold for the UE based on the distance between TRPs in the multiple cells and the beam direction used by the TRPs in the multiple cells to transmit downlink signals, so as to avoid misjudgment by the UE during movement.

[0452] It should be noted that the example shown is that if the RSRP of SSB#1 is greater than T, the UE accesses TRP0; if the RSRP of SSB#1 is less than or equal to T, the UE accesses TRP1. In actual implementation, it can also be: if the RSRP of SSB#1 is greater than or equal to T, the UE accesses TRP0; if the RSRP of SSB#1 is less than T, the UE accesses TRP1.

[0453] Thus, when multiple cells transmit downlink signals in SFN mode, the UE can determine the transmission power of the PRACH signal based on the path loss offset value configured by the network-side equipment and the corresponding RSRP measurement threshold. This allows the UE to initiate random access to the UL-only TRP with lower power in idle mode, which is beneficial for terminal energy saving.

[0454] The signal transmission method provided in this application can be executed by a terminal. This application uses the example of a signal transmission method to illustrate the terminal provided in this application.

[0455] This application provides a terminal. As an example, the terminal may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0456] The terminal includes a radio frequency (RF) unit 1501, a processing module, and a communication unit 1501. The RF unit 1501, the communication unit 1501, and the processing module can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include a general-purpose processor, a special-purpose processor, such as a Central Processing Unit (CPU), a microprocessor, a Digital Signal Processor (DSP), an Artificial Intelligence (AI) processor, a Graphics Processing Unit (GPU), an Application Specific Integrated Circuit (ASIC), a Network Processor (NP), a Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The RF unit 1501 and the communication unit 1501 can be implemented by a communication interface, which can include one or more of the following: a transceiver, pins, circuits, a bus, and the RF unit.

[0457] Specifically, referring to Figure 10, when the signal transmission device is a terminal or a component in a terminal, the signal transmission device 100 may include a receiving module 101 and a transmitting module 102.

[0458] The receiving module is used to receive a first parameter sent by the first device. The first parameter includes at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the physical uplink shared channel (PUSCH) signal and the preamble of message Msg3, a power deviation between the PUCSH signal and the preamble of message MsgA, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold.

[0459] The transmitting module is used to send a first signal to a second device, which is an uplink receiving device, based on the first parameters received by the receiving module.

[0460] In some embodiments of this application, the first offset value includes at least one of the following:

[0461] The path loss offset value between the UE and the uplink receiving device;

[0462] The offset value of the target received power;

[0463] The offset value of the nominal power;

[0464] Offset value of transmission power;

[0465] The offset value of the power deviation between the Msg3 PUSCH signal and the preamble;

[0466] The offset value of the power deviation between the MsgA PUSCH signal and the preamble;

[0467] Offset value of power compensation parameters;

[0468] Offset value of the downlink signal selection threshold.

[0469] In some embodiments of this application, the apparatus further includes a processing module;

[0470] The processing module is used to determine the first transmission power based on the first parameter;

[0471] The transmitting module is specifically used to transmit the first signal to the second device using the first transmitting power.

[0472] In some embodiments of this application, the determining module is specifically used to determine the first transmission power based on the first parameter when the first preset condition is met;

[0473] The first preset condition includes at least one of the following:

[0474] The measurement result of the first downlink signal selected by the UE meets the preset measurement result conditions;

[0475] The first signal transmission failed or reverted;

[0476] The first signal is retransmitted;

[0477] During the repeated transmission of the first signal, the number of repeated transmissions of the first signal is greater than or equal to the preset number of repeated transmissions;

[0478] The load on the first device is greater than the load threshold;

[0479] The first device is in power-saving mode or not receiving signals, while the second device is in signal receiving mode.

[0480] In some embodiments of this application, the determining module is specifically used for:

[0481] The second parameter is determined based on the first parameter and the first preset rule;

[0482] The first transmission power is determined based on the second parameter;

[0483] The first preset rule includes any one of the following:

[0484] The second parameter is obtained by selecting the maximum parameter value, the minimum parameter value, any parameter value, or the average parameter value from each parameter of the first parameter.

[0485] The second parameter is obtained by selecting a parameter value from each of the first parameters based on at least one of the third parameter and the measurement results of the first downlink signal selected by the UE.

[0486] In some embodiments of this application, the apparatus further includes a processing module;

[0487] The processing module is specifically used to select a first downlink signal based on the first parameter;

[0488] The sending module is specifically used to send the first signal to the second device through the uplink transmission resources of the second device associated with the first downlink signal.

[0489] In some embodiments of this application, the processing module is specifically used to select a first downlink signal based on the first parameter and the third parameter.

[0490] In some embodiments of this application, the third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold;

[0491] Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value;

[0492] The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

[0493] In some embodiments of this application, the apparatus further includes: a processing module;

[0494] The processing module is configured to determine a first uplink transmission resource based on a fourth parameter and first configuration information sent by the first device. The fourth parameter is used to indicate cell information of at least one cell associated with the first parameter, and the first configuration information is used to indicate the uplink transmission resource of the at least one cell. The at least one cell is different from the primary cell of the UE.

[0495] The sending module is specifically used to send the first signal to the second device based on the first parameter and through the first uplink transmission resource.

[0496] In some embodiments of this application, the transmitting module is specifically used to transmit the first signal to the second device by sequentially using M groups of first uplink transmission resources based on the first parameters during multiple transmissions of the first signal using different beams;

[0497] Wherein, the M groups of first uplink transmission resources are associated with the same downlink signal index, and M is a positive integer.

[0498] In some embodiments of this application, each of the M groups of first uplink transmission resources is used to transmit the same first signal;

[0499] Alternatively, in each group of first uplink transmission resources, every N first uplink transmission resources use the same beam, where N is a positive integer.

[0500] In some embodiments of this application, the transmission power of the first signal is determined by at least one of the first parameter, the third parameter, and the fourth parameter;

[0501] The third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold;

[0502] Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value;

[0503] The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

[0504] The fourth parameter is used to indicate the cell information of at least one cell associated with the first parameter, and the at least one cell is different from the UE's primary cell.

[0505] In some embodiments of this application, the sending module is specifically used to send the first signal to a second device based on the first parameter in a first transmission scenario of the first signal;

[0506] The first sending scenario includes at least one of the following:

[0507] A single transmission of the first signal;

[0508] Repeated transmission of the first signal;

[0509] Retransmission of the first signal;

[0510] The first signal is based on multiple transmissions of different beams;

[0511] The multiple transmissions of the first signal are associated with different signals.

[0512] In some embodiments of this application, the transmitting module is further configured to transmit a second signal before the receiving module receives the first parameter transmitted by the first device, the second signal being used for measuring the path loss between the UE and the uplink receiving device.

[0513] In some embodiments of this application, the receiving module is further configured to receive second configuration information sent by the first device before the sending module sends the second signal, the second configuration information being used to indicate at least one of the uplink transmission resources, transmission power, and transmission period of the second signal.

[0514] In some embodiments of this application, the second transmission power of the second signal is indicated by second configuration information or determined based on a second preset rule;

[0515] The second preset rule includes at least one of the following:

[0516] The second signal is transmitted using the UE's maximum transmission power;

[0517] Determined based on the path loss corresponding to the downlink signal and the target received power;

[0518] It is determined based on the target received power, the second offset value, and the path loss corresponding to the downlink signal.

[0519] In some embodiments of this application, the receiving module is specifically used to receive the first information based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship of the first device associated with the first downlink signal selected by the UE;

[0520] The quasi-co-address relationship indicates that the first downlink signal and the signal carrying the first information are quasi-co-addressed.

[0521] In some embodiments of this application, the second downlink signal or the second downlink signal group corresponds to a downlink signal selection threshold, and the second downlink signal or the second downlink signal group is associated with the uplink transmission resources of the uplink receiving device.

[0522] In the signal transmission device provided in this application embodiment, since the signal transmission device can receive at least one of the following first parameters sent by the first device: a first offset value, an index value of the first offset value, a target received power of the first signal, a nominal power, a power compensation parameter, a power deviation between the Msg3PUSCH signal and the preamble, a power deviation between the MsgA PUCSH signal and the preamble, a maximum transmit power of the first signal, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold, the signal transmission device can use the first parameters to send the first signal to the uplink receiving device. That is, the signal transmission device indirectly obtains the signal transmission parameters required to send the signal to the uplink receiving device through the first device, so as to ensure that the signal transmission device accurately transmits the signal to the second device.

[0523] Furthermore, since the signal transmission device can send the first signal to the second device based on the first parameter, the transmission load on the first device can be shared by the second device, thereby reducing interference between signals on the first device and improving system performance.

[0524] The signal transmitting device provided in this application embodiment can implement the various processes implemented by the UE in the method embodiments shown in Figures 3 to 9, and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0525] Referring to Figure 11, when the signal transmission device is a network-side device or a component in a network-side device, the signal transmission device 110 may include: a transmission module 111.

[0526] The transmitting module is used to send a first parameter to the UE, the first parameter being used by the UE to send a first signal to a second device, the second device being an uplink receiving device;

[0527] The first parameter includes at least one of the following parameters: first offset value, index value of the first offset value, target received power, nominal power, power compensation parameter, power deviation between message Msg3 PUSCH signal and preamble, power deviation between message MsgA PUCSH signal and preamble, maximum transmit power, power backoff value, power level, transmit module information, and downlink signal selection threshold.

[0528] In some embodiments of this application, the transmitting module is further configured to transmit a third parameter to the UE, the third parameter including at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold;

[0529] Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value;

[0530] The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

[0531] In some embodiments of this application, the sending module is further configured to send a fourth parameter and first configuration information to the UE, wherein the fourth parameter indicates cell information of at least one cell associated with the first parameter, and the first configuration information indicates uplink transmission resources of the at least one cell, and the at least one cell is different from the primary cell of the UE;

[0532] The fourth parameter and the first configuration information are used to determine the uplink transmission resources of the first signal.

[0533] In some embodiments of this application, the transmitting module is specifically used to transmit first information to the UE based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship associated with the first downlink signal selected by the UE;

[0534] The quasi-co-address relationship indicates that the first downlink signal and the signal carrying the first information are quasi-co-addressed.

[0535] In some embodiments of this application, the apparatus further includes:

[0536] The receiving module is configured to receive a second signal sent by the UE before the sending module sends the first parameter to the UE, the second signal being used for measuring the path loss between the UE and the uplink receiving device;

[0537] The sending module is specifically used to send the first parameter to the UE based on the second signal.

[0538] In some embodiments of this application, the transmitting module is further configured to send second configuration information to the UE before the receiving module receives the second signal sent by the UE. The second configuration information indicates at least one of the uplink transmission resources, transmission power, and transmission period of the second signal. In the signal transmission apparatus provided in this application, since the signal transmission apparatus can send the UE at least one of the following first parameters: a first offset value, an index value of the first offset value, a target received power of the first signal, a nominal power, a power compensation parameter, a power deviation between the Msg3 PUSCH signal and the preamble, a power deviation between the MsgA PUCSH signal and the preamble, the maximum transmission power of the first signal, a power backoff value, a power level, transmission module information, and a downlink signal selection threshold, the UE, upon receiving the first parameters, can use them to send the first signal to the uplink receiving device. That is, the signal transmission apparatus indirectly obtains the signal transmission parameters required to send the signal to the uplink receiving device, ensuring that the UE accurately signals the second device.

[0539] The signal transmitting device provided in this application embodiment can implement the various processes implemented by the first device in the method embodiments shown in Figures 3 to 9, and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0540] As shown in Figure 12, this application embodiment also provides a communication device 1200, including a processor 1201 and a memory 1202. The memory 1202 stores a program or instructions that can run on the processor 1201. For example, when the communication device 1200 is a terminal, the program or instructions executed by the processor 1201 implement the various steps of the above-described signal transmission method embodiment and achieve the same technical effect. When the communication device 1200 is a network-side device, the program or instructions executed by the processor 1201 implement the various steps of the above-described signal transmission method embodiment and achieve the same technical effect. To avoid repetition, this will not be described again here.

[0541] This application also provides a terminal, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the UE in the method embodiment shown in the figure. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the UE in the above method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be the signal transmission device shown in Figure 10. Specifically, Figure 13 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0542] The terminal 1500 includes, but is not limited to, at least some of the following components: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

[0543] Those skilled in the art will understand that the terminal 1500 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 1510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. The terminal structure shown in Figure 13 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0544] It should be understood that, in this embodiment, the input unit 1504 may include a graphics processor 15041 and a microphone 15042. The graphics processor 15041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1507 includes a touch panel 15071 and at least one of other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0545] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1501 can transmit it to the processor 1510 for processing; in addition, the radio frequency unit 1501 can send uplink data to the network-side device. Typically, the radio frequency unit 1501 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0546] The memory 1509 can be used to store software programs or instructions, as well as various data. The memory 1509 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1509 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1509 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0547] Processor 1510 may include one or more processing units; optionally, processor 1510 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1510.

[0548] In one embodiment: the radio frequency unit 1501 is used to receive a first parameter sent by a first device, the first parameter including at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the physical uplink shared channel (PUSCH) signal of message Msg3 and the preamble, a power deviation between the PUCSH signal of message MsgA and the preamble, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold;

[0549] The radio frequency unit 1501 is used to send a first signal to a second device based on the first parameter received by the radio frequency unit 1501, wherein the second device is an uplink receiving device.

[0550] In some embodiments of this application, the first offset value includes at least one of the following:

[0551] The path loss offset value between the UE and the uplink receiving device;

[0552] The offset value of the target received power;

[0553] The offset value of the nominal power;

[0554] Offset value of transmission power;

[0555] The offset value of the power deviation between the Msg3 PUSCH signal and the preamble;

[0556] The offset value of the power deviation between the MsgA PUSCH signal and the preamble;

[0557] Offset value of power compensation parameters;

[0558] Offset value of the downlink signal selection threshold.

[0559] In some embodiments of this application, the terminal further includes a processor 1510;

[0560] The processor 1510 is configured to determine a first transmission power based on the first parameter;

[0561] The radio frequency unit 1501 is specifically used to send the first signal to the second device using the first transmission power.

[0562] In some embodiments of this application, the determining module is specifically used to determine the first transmission power based on the first parameter when the first preset condition is met;

[0563] The first preset condition includes at least one of the following:

[0564] The measurement result of the first downlink signal selected by the UE meets the preset measurement result conditions;

[0565] The first signal transmission failed or reverted;

[0566] The first signal is retransmitted;

[0567] During the repeated transmission of the first signal, the number of repeated transmissions of the first signal is greater than or equal to the preset number of repeated transmissions;

[0568] The load on the first device is greater than the load threshold;

[0569] The first device is in power-saving mode or not receiving signals, while the second device is in signal receiving mode.

[0570] In some embodiments of this application, the determining module is specifically used for:

[0571] The second parameter is determined based on the first parameter and the first preset rule;

[0572] The first transmission power is determined based on the second parameter;

[0573] The first preset rule includes any one of the following:

[0574] The second parameter is obtained by selecting the maximum parameter value, the minimum parameter value, any parameter value, or the average parameter value from each parameter of the first parameter.

[0575] The second parameter is obtained by selecting a parameter value from each of the first parameters based on at least one of the third parameter and the measurement results of the first downlink signal selected by the UE.

[0576] In some embodiments of this application, the terminal further includes a processor 1510;

[0577] The processor 1510 is specifically used to select a first downlink signal based on the first parameter;

[0578] The radio frequency unit 1501 is specifically used to send the first signal to the second device through the uplink transmission resources of the second device associated with the first downlink signal.

[0579] In some embodiments of this application, the processor 1510 is specifically configured to select a first downlink signal based on the first parameter and the third parameter.

[0580] In some embodiments of this application, the third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold;

[0581] Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value;

[0582] The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

[0583] In some embodiments of this application, the terminal further includes: a processor 1510;

[0584] The processor 1510 is configured to determine a first uplink transmission resource based on a fourth parameter and first configuration information sent by the first device. The fourth parameter is used to indicate cell information of at least one cell associated with the first parameter, and the first configuration information is used to indicate the uplink transmission resource of the at least one cell. The at least one cell is different from the primary cell of the UE.

[0585] The radio frequency unit 1501 is specifically used to send the first signal to the second device based on the first parameter and through the first uplink transmission resource.

[0586] In some embodiments of this application, the radio frequency unit 1501 is specifically used to send the first signal to the second device by sequentially using M groups of first uplink transmission resources based on the first parameters during multiple transmissions of the first signal using different beams.

[0587] Wherein, the M groups of first uplink transmission resources are associated with the same downlink signal index, and M is a positive integer.

[0588] In some embodiments of this application, each of the M groups of first uplink transmission resources is used to transmit the same first signal;

[0589] Alternatively, in each group of first uplink transmission resources, every N first uplink transmission resources use the same beam, where N is a positive integer.

[0590] In some embodiments of this application, the transmission power of the first signal is determined by at least one of the first parameter, the third parameter, and the fourth parameter;

[0591] The third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold;

[0592] Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value;

[0593] The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

[0594] The fourth parameter is used to indicate the cell information of at least one cell associated with the first parameter, and the at least one cell is different from the UE's primary cell.

[0595] In some embodiments of this application, the radio frequency unit 1501 is specifically used to send the first signal to a second device based on the first parameters in a first transmission scenario of the first signal;

[0596] The first transmission scenario includes at least one of the following: a single transmission of the first signal; repeated transmission of the first signal;

[0597] Retransmission of the first signal; multiple transmissions of the first signal based on different beams; multiple transmissions of the first signal associated with different signals.

[0598] In some embodiments of this application, the radio frequency unit 1501 is further configured to send a second signal before the radio frequency unit 1501 receives the first parameter sent by the first device, the second signal being used for measuring the path loss between the UE and the uplink receiving device.

[0599] In some embodiments of this application, the radio frequency unit 1501 is further configured to receive second configuration information sent by the first device before the radio frequency unit 1501 sends the second signal. The second configuration information is used to indicate at least one of the uplink transmission resources, transmission power and transmission period of the second signal.

[0600] In some embodiments of this application, the second transmission power of the second signal is indicated by second configuration information or determined based on a second preset rule;

[0601] The second preset rule includes at least one of the following:

[0602] The second signal is transmitted using the UE's maximum transmission power;

[0603] Determined based on the path loss corresponding to the downlink signal and the target received power;

[0604] It is determined based on the target received power, the second offset value, and the path loss corresponding to the downlink signal.

[0605] In some embodiments of this application, the radio frequency unit 1501 is specifically used to receive the first information based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship of the first device associated with the first downlink signal selected by the UE; wherein the quasi-co-location relationship indicates that the first downlink signal is quasi-co-located with the signal carrying the first information.

[0606] In some embodiments of this application, the second downlink signal or the second downlink signal group corresponds to a downlink signal selection threshold, and the second downlink signal or the second downlink signal group is associated with the uplink transmission resources of the uplink receiving device.

[0607] In the terminal provided in this application embodiment, since the terminal can receive at least one of the following first parameters sent by the first device: a first offset value, an index value of the first offset value, a target received power of the first signal, a nominal power, a power compensation parameter, a power deviation between the Msg3 PUSCH signal and the preamble, a power deviation between the MsgA PUCSH signal and the preamble, a maximum transmit power of the first signal, a power backoff value, a power level, radio frequency unit transmission module information, and a downlink signal selection threshold, the terminal can use the first parameters to send the first signal to the uplink receiving device. That is, the terminal indirectly obtains the signal transmission parameters required to send the signal to the uplink receiving device through the first device, so as to ensure that the terminal accurately sends the signal to the second device.

[0608] Furthermore, since the terminal can send a first signal to the second device based on the first parameter, the second device can share the transmission load on the first device, thereby reducing interference between signals on the first device and improving system performance.

[0609] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the UE in the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0610] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps executed by the first device in the method embodiments shown in Figures 3 to 9. This network-side device embodiment corresponds to the first device in the above method embodiments. All implementation processes and methods of the first device in the above method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0611] Specifically, this application embodiment also provides a network-side device, which can be the signal transmission device shown in FIG11. As shown in FIG14, the network-side device 1400 includes: an antenna 141, a radio frequency device 142, a baseband device 143, a processor 144, and a memory 145. The antenna 141 is connected to the radio frequency device 142. In the uplink direction, the radio frequency device 142 receives information through the antenna 141 and sends the received information to the baseband device 143 for processing. In the downlink direction, the baseband device 143 processes the information to be transmitted and sends it to the radio frequency device 142. The radio frequency device 142 processes the received information and transmits it through the antenna 141.

[0612] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 143, which includes a baseband processor.

[0613] The baseband device 143 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG14. One of the chips is, for example, a baseband processor, which is connected to the memory 145 via a bus interface to call the program in the memory 145 and execute the network device operation shown in the above method embodiment.

[0614] The network-side device may also include a network interface 146, such as a Common Public Radio Interface (CPRI).

[0615] Specifically, the network-side device 1400 in this application embodiment further includes: instructions or programs stored in memory 145 and executable on processor 144. The processor 144 calls the instructions or programs in memory 145 to execute the methods executed by each module shown in FIG12 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0616] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described signal transmission method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0617] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0618] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above signal transmission method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0619] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0620] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described signal transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0621] This application also provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the UE method embodiment described above, and the network-side device can be used to execute the steps of the first device method embodiment described above.

[0622] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0623] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0624] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A signal transmission method, comprising: The user equipment (UE) receives a first parameter sent by the first device. The first parameter includes at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the physical uplink shared channel (PUSCH) signal of message Msg3 and the preamble, a power deviation between the PUCSH signal of message MsgA and the preamble, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold. The UE sends a first signal to the second device based on the first parameter, and the second device is an uplink receiving device.

2. The method of claim 1, wherein, The first offset value includes at least one of the following: The path loss offset value between the UE and the uplink receiving device; The offset value of the target received power; The offset value of the nominal power; Offset value of transmission power; The offset value of the power deviation between the Msg3 PUSCH signal and the preamble; The offset value of the power deviation between the MsgA PUSCH signal and the preamble; Offset value of power compensation parameters; Offset value of the downlink signal selection threshold.

3. The method of claim 1 or 2, wherein, The UE sends the first signal to the second device based on the first parameter, including: The UE determines the first transmission power based on the first parameter; The UE uses the first transmission power to send the first signal to the second device.

4. The method of claim 3, wherein, The UE determines the first transmission power based on the first parameter, including: If the first preset condition is met, the UE determines the first transmission power based on the first parameter; The first preset condition includes at least one of the following: The measurement result of the first downlink signal selected by the UE meets the preset measurement result conditions; The first signal transmission failed or reverted; The first signal is retransmitted; During the repeated transmission of the first signal, the number of repeated transmissions of the first signal is greater than or equal to the preset number of repeated transmissions; The load on the first device is greater than the load threshold; The first device is in power-saving mode or not receiving signals, while the second device is in signal receiving mode.

5. The method of claim 3 or 4, wherein, The UE determines the first transmission power based on the first parameter, including: The UE determines the second parameter based on the first parameter and the first preset rule; The UE determines the first transmission power based on the second parameter; The first preset rule includes any one of the following: The second parameter is obtained by selecting the maximum parameter value, the minimum parameter value, any parameter value, or the average parameter value from each parameter of the first parameter. The second parameter is obtained by selecting a parameter value from each of the first parameters based on at least one of the third parameter and the measurement results of the first downlink signal selected by the UE.

6. The method of any one of claims 1 to 5, wherein, The UE sends the first signal to the second device based on the first parameter, including: The UE selects a first downlink signal based on the first parameter; The UE sends the first signal to the second device through the uplink transmission resources of the second device associated with the first downlink signal.

7. The method of claim 6, wherein, The UE selects a first downlink signal based on the first parameter, including: The UE selects a first downlink signal based on the first parameter and the third parameter.

8. The method of any one of claims 5-7, wherein, The third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold; wherein each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

9. The method of any one of claims 1 to 7, wherein, The method further includes: The UE determines a first uplink transmission resource based on a fourth parameter and first configuration information sent by the first device. The fourth parameter is used to indicate cell information of at least one cell associated with the first parameter, and the first configuration information is used to indicate the uplink transmission resource of the at least one cell. The at least one cell is different from the UE's primary cell. The UE sends the first signal to the second device based on the first parameter, including: Based on the first parameter, the UE sends the first signal to the second device through the first uplink transmission resource.

10. The method of any one of claims 1 to 5, wherein, The UE sends the first signal to the second device based on the first parameter, including: During the multiple transmissions of the first signal using different beams, the UE, based on the first parameters, sequentially uses M groups of first uplink transmission resources to send the first signal to the second device. Wherein, the M groups of first uplink transmission resources are associated with the same downlink signal index, and M is a positive integer.

11. The method of claim 10, wherein, Each of the M groups of first uplink transmission resources is used to transmit the same first signal; Alternatively, in each group of first uplink transmission resources, every N first uplink transmission resources use the same beam, where N is a positive integer.

12. The method of any one of claims 9-11, wherein, The transmission power of the first signal is determined by at least one of the first parameter, the third parameter, and the fourth parameter; The third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold; Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter. The fourth parameter is used to indicate the cell information of at least one cell associated with the first parameter, and the at least one cell is different from the UE's primary cell.

13. The method of any one of claims 1 to 12, wherein, The UE sends the first signal to the second device based on the first parameter, including: In a first transmission scenario of the first signal, the UE transmits the first signal to a second device based on the first parameter; wherein the first transmission scenario includes at least one of the following: a single transmission of the first signal; repeated transmission of the first signal; retransmission of the first signal; multiple transmissions of the first signal based on different beams; and multiple transmissions of the first signal associated with different signals.

14. The method of any one of claims 1 to 13, wherein, Before the UE receives the first parameter sent by the first device, the method further includes: The UE sends a second signal for measuring the path loss between the UE and the uplink receiving device.

15. The method of claim 14, wherein, Before the UE sends the second signal, the method further includes: The UE receives second configuration information sent by the first device, the second configuration information being used to indicate at least one of the uplink transmission resources, transmission power, and transmission period of the second signal.

16. The method of claim 14 or 15, wherein, The second transmission power of the second signal is indicated by the second configuration information or determined based on the second preset rule; The second preset rule includes at least one of the following: The second signal is transmitted using the UE's maximum transmission power; Determined based on the path loss corresponding to the downlink signal and the target received power; It is determined based on the target received power, the second offset value, and the path loss corresponding to the downlink signal.

17. The method of any one of claims 1 to 16, wherein, The UE receives the first parameters sent by the first device, including: The UE receives the first information based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship of the first device associated with the first downlink signal selected by the UE. The quasi-co-address relationship indicates that the first downlink signal and the signal carrying the first information are quasi-co-addressed.

18. The method of any one of claims 1 to 17, wherein, The second downlink signal or the second downlink signal group corresponds to a downlink signal selection threshold, and the second downlink signal or the second downlink signal group is associated with the uplink transmission resources of the uplink receiving device.

19. A signal transmission method, the method comprising: The first device sends the first parameter to the UE; The first parameter includes at least one of the following parameters: first offset value, index value of the first offset value, target received power, nominal power, power compensation parameter, power deviation between message Msg3 PUSCH signal and preamble, power deviation between message MsgA PUCSH signal and preamble, maximum transmit power, power backoff value, power level, transmit module information, and downlink signal selection threshold.

20. The method of claim 19, wherein, The method further includes: The first device sends a third parameter to the UE, the third parameter including at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold; Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

21. The method of claim 19 or 20, wherein, The method further includes: The first device sends a fourth parameter and first configuration information to the UE. The fourth parameter indicates the cell information of at least one cell associated with the first parameter, and the first configuration information indicates the uplink transmission resources of the at least one cell. The at least one cell is different from the primary cell of the UE. The fourth parameter and the first configuration information are used to determine the uplink transmission resources of the first signal.

22. The method of any one of claims 19-21, wherein, The first device sends a first parameter to the UE, including: The first device sends first information to the UE based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship associated with the first downlink signal selected by the UE; The quasi-co-address relationship indicates that the first downlink signal and the signal carrying the first information are quasi-co-addressed.

23. The method of any one of claims 19-22, wherein, Before the first device sends the first parameter to the UE, the method further includes: The first device receives a second signal sent by the UE, the second signal being used to measure the path loss between the UE and the uplink receiving device; The first device sends a first parameter to the UE, including: The first device sends the first parameter to the UE based on the second signal.

24. The method of claim 23, wherein, Before the first device receives the second signal sent by the UE, the method further includes: The first device sends second configuration information to the UE, the second configuration information indicating at least one of the uplink transmission resources, transmission power and transmission period of the second signal.

25. A signal transmission device comprising: Receive module and transmit module; The receiving module is used to receive a first parameter sent by the first device. The first parameter includes at least one of the following parameters: a first offset value, an index value of the first offset value, a target received power, a nominal power, a power compensation parameter, a power deviation between the physical uplink shared channel (PUSCH) signal and the preamble of message Msg3, a power deviation between the PUCSH signal and the preamble of message MsgA, a maximum transmit power, a power backoff value, a power level, transmit module information, and a downlink signal selection threshold. The transmitting module is used to send a first signal to a second device, which is an uplink receiving device, based on the first parameters received by the receiving module.

26. The apparatus of claim 25, wherein, The first offset value includes at least one of the following: The path loss offset value between the UE and the uplink receiving device; The offset value of the target received power; The offset value of the nominal power; Offset value of transmission power; The offset value of the power deviation between the Msg3 PUSCH signal and the preamble; The offset value of the power deviation between the MsgA PUSCH signal and the preamble; Offset value of power compensation parameters; Offset value of the downlink signal selection threshold.

27. The apparatus of claim 25 or 26, wherein, The device also includes a processing module; The processing module is used to determine the first transmission power based on the first parameter; The transmitting module is specifically used to transmit the first signal to the second device using the first transmitting power.

28. The apparatus of claim 27, wherein, The determining module is specifically used to determine the first transmission power based on the first parameter when the first preset condition is met; The first preset condition includes at least one of the following: The measurement result of the first downlink signal selected by the UE meets the preset measurement result conditions; The first signal transmission failed or reverted; The first signal is retransmitted; During the repeated transmission of the first signal, the number of repeated transmissions of the first signal is greater than or equal to the preset number of repeated transmissions; The load on the first device is greater than the load threshold; The first device is in power-saving mode or not receiving signals, while the second device is in signal receiving mode.

29. The apparatus of claim 27 or 28, wherein, The determining module is specifically used for: The second parameter is determined based on the first parameter and the first preset rule; The first transmission power is determined based on the second parameter; The first preset rule includes any one of the following: The second parameter is obtained by selecting the maximum parameter value, the minimum parameter value, any parameter value, or the average parameter value from each parameter of the first parameter. The second parameter is obtained by selecting a parameter value from each of the first parameters based on at least one of the third parameter and the measurement results of the first downlink signal selected by the UE.

30. The apparatus of any one of claims 25-29, wherein, The device also includes a processing module; The processing module is specifically used to select a first downlink signal based on the first parameter; The sending module is specifically used to send the first signal to the second device through the uplink transmission resources of the second device associated with the first downlink signal.

31. The apparatus according to claim 30, wherein, The processing module is specifically used to select a first downlink signal based on the first parameter and the third parameter.

32. The apparatus of any one of claims 29-31, wherein, The third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold; Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

33. The apparatus of any one of claims 25-31, wherein, The device further includes: a processing module; The processing module is configured to determine a first uplink transmission resource based on a fourth parameter and first configuration information sent by the first device. The fourth parameter is used to indicate cell information of at least one cell associated with the first parameter, and the first configuration information is used to indicate the uplink transmission resource of the at least one cell. The at least one cell is different from the primary cell of the UE. The sending module is specifically used to send the first signal to the second device based on the first parameter and through the first uplink transmission resource.

34. The apparatus according to any one of claims 25 to 29, wherein, The transmitting module is specifically used to transmit the first signal to the second device in the process of transmitting the first signal multiple times using different beams, based on the first parameters, by sequentially using M groups of first uplink transmission resources. Wherein, the M groups of first uplink transmission resources are associated with the same downlink signal index, and M is a positive integer.

35. The apparatus of claim 34, wherein, Each of the M groups of first uplink transmission resources is used to transmit the same first signal; Alternatively, in each group of first uplink transmission resources, every N first uplink transmission resources use the same beam, where N is a positive integer.

36. The apparatus of any one of claims 33-35, wherein, The transmission power of the first signal is determined by at least one of the first parameter, the third parameter, and the fourth parameter; The third parameter includes at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold; Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter. The fourth parameter is used to indicate the cell information of at least one cell associated with the first parameter, and the at least one cell is different from the UE's primary cell.

37. The apparatus of any one of claims 25-36, wherein, The sending module is specifically used to send the first signal to the second device based on the first parameters in the first sending scenario of the first signal; The first transmission scenario includes at least one of the following: a single transmission of the first signal; repeated transmission of the first signal; retransmission of the first signal; multiple transmissions of the first signal based on different beams; and multiple transmissions of the first signal associated with different signals.

38. The apparatus according to any one of claims 25 to 37, wherein, The transmitting module is further configured to transmit a second signal before the receiving module receives the first parameter transmitted by the first device, the second signal being used for measuring the path loss between the UE and the uplink receiving device.

39. The apparatus according to claim 38, wherein, The receiving module is further configured to receive second configuration information sent by the first device before the sending module sends the second signal, the second configuration information being used to indicate at least one of the uplink transmission resources, transmission power, and transmission period of the second signal.

40. The apparatus of claim 38 or 39, wherein, The second transmission power of the second signal is indicated by the second configuration information or determined based on the second preset rule; The second preset rule includes at least one of the following: The second signal is transmitted using the UE's maximum transmission power; Determined based on the path loss corresponding to the downlink signal and the target received power; It is determined based on the target received power, the second offset value, and the path loss corresponding to the downlink signal.

41. The apparatus of any one of claims 25-40, wherein, The receiving module is specifically configured to receive the first information based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship of the first device associated with the first downlink signal selected by the UE. The quasi-co-address relationship indicates that the first downlink signal and the signal carrying the first information are quasi-co-addressed.

42. The apparatus of any one of claims 25-40, wherein, The second downlink signal or the second downlink signal group corresponds to a downlink signal selection threshold, and the second downlink signal or the second downlink signal group is associated with the uplink transmission resources of the uplink receiving device.

43. A signal transmission device, the device comprising: The transmitting module is used to send a first parameter to the UE, the first parameter being used by the UE to send a first signal to a second device, the second device being an uplink receiving device; The first parameter includes at least one of the following parameters: first offset value, index value of the first offset value, target received power, nominal power, power compensation parameter, power deviation between message Msg3 PUSCH signal and preamble, power deviation between message MsgA PUCSH signal and preamble, maximum transmit power, power backoff value, power level, transmit module information, and downlink signal selection threshold.

44. The device of claim 43, wherein, The transmitting module is further configured to transmit a third parameter to the UE, the third parameter including at least one downlink signal measurement threshold or an offset value of the at least one downlink signal measurement threshold; Each downlink signal measurement threshold corresponds to at least one parameter value, or the offset value of each downlink signal measurement threshold corresponds to at least one parameter value; The at least one parameter value corresponds one-to-one with at least one parameter item in the first parameter.

45. The device of claim 43 or 44, wherein, The sending module is further configured to send a fourth parameter and first configuration information to the UE, wherein the fourth parameter indicates cell information of at least one cell associated with the first parameter, and the first configuration information indicates uplink transmission resources of the at least one cell, wherein the at least one cell is different from the primary cell of the UE; The fourth parameter and the first configuration information are used to determine the uplink transmission resources of the first signal.

46. The apparatus of any one of claims 43-45, wherein, The transmitting module is specifically used to transmit first information to the UE based on at least one of the time-frequency resources, beam direction, and quasi-co-location relationship associated with the first downlink signal selected by the UE; The quasi-co-address relationship indicates that the first downlink signal and the signal carrying the first information are quasi-co-addressed.

47. The device of any one of claims 18-46, wherein, The device further includes: The receiving module is configured to receive a second signal sent by the UE before the sending module sends the first parameter to the UE, the second signal being used for measuring the path loss between the UE and the uplink receiving device; The sending module is specifically used to send the first parameter to the UE based on the second signal.

48. The device of claim 47, wherein, The transmitting module is further configured to transmit second configuration information to the UE before the receiving module receives the second signal transmitted by the UE, wherein the second configuration information indicates at least one of the uplink transmission resources, transmission power and transmission period of the second signal.

49. A terminal comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the signal transmission method as claimed in any one of claims 1 to 18.

50. A network-side device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the signal transmission method as claimed in any one of claims 19 to 24.

51. A readable storage medium storing a program or instructions that, when executed by a processor, implement the signal transmission method as claimed in any one of claims 1 to 18, or implement the steps of the signal transmission method as claimed in any one of claims 19 to 24.

52. A computer program product stored in a storage medium, the computer program product being executed by at least one processor to implement the signal transmission method as claimed in any one of claims 1 to 18, or to implement the signal transmission method as claimed in any one of claims 19 to 24.

53. A chip, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to run a program or instructions to implement the signal transmission method as described in any one of claims 1 to 18, or to implement the signal transmission method as described in any one of claims 19 to 24.

Images