Reference signal determination method, reference signal processing method, and related devices

Abstract

The application discloses a reference signal determination method, a reference signal processing method and related equipment. The method comprises: in the case that a first object schedules a resource of a second object for sidelink (SL) transmission, performing a first operation; wherein the first object and the second object are one of a cell, a frequency point and a carrier, and the first operation comprises any one of the following: determining a target reference signal according to a preset reference signal identifier, the target reference signal being used for path loss measurement of the second object; and determining the target reference signal according to target control signaling on the first object. The embodiment of the application improves the reliability of transmission.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a reference signal determination method, a reference signal processing method and related equipment. BACKGROUND

[0002] With the development of communication technology, sidelink (SL) transmission is implemented in a communication system. In a cross-scheduling and carrier aggregation scenario, SL transmission can be implemented by scheduling SL resources of a cell on a cell scheduling. However, when there is no control signaling of the scheduled cell, the terminal cannot perform power control based on downlink loss, resulting in poor transmission reliability. SUMMARY

[0003] Embodiments of the present application provide a reference signal determination method, a reference signal processing method and related equipment, which can solve the problem of poor transmission reliability caused by the absence of control signaling of the scheduled cell in a cross-scheduling and carrier aggregation scenario.

[0004] In a first aspect, a reference signal determination method is provided, which is executed by a terminal and includes the following steps.

[0005] In a case where a first object schedules resources of a second object for sidelink (SL) transmission, a first operation is performed.

[0006] The first object and the second object are one of a cell, a frequency point and a carrier, and the first operation includes any of the following operations.

[0007] A target reference signal is determined according to a preset reference signal identifier, and the target reference signal is used for downlink loss measurement of the second object.

[0008] The target reference signal is determined according to target control signaling on the first object.

[0009] In a second aspect, a reference signal processing method is provided, which is executed by a network device and includes the following steps.

[0010] In a case where a first object schedules resources of a second object for sidelink (SL) transmission, target control signaling is sent to a terminal on the first object, the target control signaling is used to determine a target reference signal, and the target reference signal is used for downlink loss measurement of the second object.

[0011] In a third aspect, a reference signal determination apparatus is provided, which includes the following modules.

[0012] An execution module is configured to perform a first operation in a case where a first object schedules resources of a second object for sidelink (SL) transmission.

[0013] The first object and the second object are one of a cell, a frequency point, and a carrier, and the first operation includes any one of the following:

[0014] The target reference signal is determined according to a preset reference signal identifier, and the target reference signal is used for a path loss measurement of the second object.

[0015] The target reference signal is determined according to target control signaling on the first object.

[0016] In a fourth aspect, a reference signal processing apparatus is provided, including:

[0017] The sending module is configured to, in a case where the first object schedules resources of the second object for sidelink (SL) transmission, send, to a terminal, target control signaling on the first object, the target control signaling being used to determine a target reference signal, and the target reference signal being used for a path loss measurement of the second object.

[0018] In a fifth aspect, a terminal is provided, including a processor, a memory, and a program or instruction stored on the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the method according to the first aspect are implemented.

[0019] In a sixth aspect, a network device is provided, including a processor, a memory, and a program or instruction stored on the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the method according to the second aspect are implemented.

[0020] In a seventh aspect, a readable storage medium is provided, and the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the third aspect are implemented.

[0021] In an eighth aspect, a chip is provided, including a processor and a communication interface, the communication interface being coupled to the processor, and the processor being configured to run a network device program or instruction to implement the method according to the second aspect.

[0022] In the embodiments of the present application, in a case where the first object schedules resources of the second object for sidelink (SL) transmission, the target reference signal is determined according to a preset reference signal identifier or target control signaling on the first object, so that a path loss measurement result obtained based on reference signal measurement of the target reference signal can be used as a path loss measurement result of the second object, and then downlink path loss-based power control on the second object is implemented. Therefore, the reliability of transmission can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural diagram of a network system to which embodiments of the present application can be applied;

[0024] Figure 2 is a flowchart of a reference signal determination method provided by embodiments of the present application;

[0025] Figure 3 is a flowchart of a reference signal processing method provided by embodiments of the present application;

[0026] Figure 4 is a structural diagram of a reference signal determination apparatus provided by embodiments of the present application;

[0027] Figure 5 is a structural diagram of a reference signal processing apparatus provided by embodiments of the present application;

[0028] Figure 6 is a structural diagram of a communication device provided by embodiments of the present application;

[0029] Figure 7 is a structural diagram of another terminal provided by embodiments of the present application;

[0030] Figure 8 is a structural diagram of another network device provided by embodiments of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0032] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0033] It is worth noting that the technology described in the embodiments of the present application is 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), and other systems. The terms "system" and "network" are often used interchangeably in the embodiments of the present application, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. However, the following description describes a New Radio (NR) system for the purpose of example, and NR terminology is used in most of the following description, although these technologies can also be applied outside the NR system application, such as in a 6th Generation (6G) communication system.

[0034] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (User Equipment, UE). The terminal 11 can be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device, or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc. The wearable device includes a bracelet, a headset, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can be a base station or a core network. The base station can be referred to as a node B, an evolved node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited.

[0035] For the convenience of understanding, some contents related to the embodiments of the present application are described as follows:

[0036] I. Cross-carrier scheduling

[0037] The 5G NR system supports configuring one or more component carriers (CCs) or cells for a UE. In NR, both a primary cell (PCell) and a secondary cell (SCell) can be configured to be self-scheduled, and only SCells can be cross-carrier scheduled by a PCell or other SCells.

[0038] II. Carrier aggregation

[0039] In order to meet the requirement of 1Gbps peak rate in downlink and 500Mbps peak rate in uplink for LTE-A, a transmission bandwidth of 100MHz is required. However, due to the scarcity of continuous spectrum of such a large bandwidth, LTE-A proposes a solution of carrier aggregation.

[0040] Carrier aggregation is to aggregate two or more carrier units together to support a larger transmission bandwidth (up to 100MHz). In fact, each carrier unit corresponds to an independent cell. Generally, one carrier unit can be equivalent to one cell. The maximum bandwidth of each carrier unit is 20MHz. In order to efficiently utilize the fragmented spectrum, carrier aggregation supports aggregation between different carrier units, which can include the following cases:

[0041] Carrier units with the same or different bandwidths;

[0042] Carrier units within the same frequency band, adjacent or non-adjacent;

[0043] Carrier units within different frequency bands.

[0044] Three, SL transmission.

[0045] SL transmission is used for direct data transmission between terminal user equipment (User Equipment, UE) without going through network equipment.

[0046] The UE sends sidelink control information (Sidelink Control Information, SCI) through the physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) to schedule the transmission of the physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) to send data. This transmission is in the form of broadcast, and the receiving end does not feedback to the sending end whether the reception is successful.

[0047] LTE sidelink design supports two resource allocation modes, namely scheduled resource allocation (usually referred to as mode-1) and autonomous resource selection mode. The former is controlled by the network side device and allocates resources for each UE, and the latter is selected by the UE autonomously.

[0048] LTE supports sidelink carrier aggregation (CA). The CA of LTE sidelink is different from the Uu interface (i.e., downlink and uplink), and there is no primary component carrier (PCC) and secondary component carrier (SCC). The UE in the autonomous resource selection mode independently performs resource sensing and resource reservation on each CC.

[0049] The design of LTE sidelink is suitable for specific public safety events (such as emergency communication in fire sites or disaster sites such as earthquakes) or vehicle to everything (V2X) communication. Vehicle to everything communication includes various services, such as basic safety class communication, advanced (automatic) driving, platooning, sensor extension, and the like. Since LTE sidelink only supports broadcast communication, it is mainly used for basic safety class communication, and other advanced V2X services will be supported by NR sidelink.

[0050] The 5G NR system can be used in the frequency band above 6 GHz which is not supported by LTE, support a larger working bandwidth, and the NR system also supports the sidelink interface communication for direct communication between terminals.

[0051] Sidelink transmission mainly includes broadcast, groupcast, and unicast transmission forms. Unicast is one-to-one transmission. Groupcast is one-to-many transmission. Broadcast is also one-to-many transmission, but broadcast does not have the concept of UEs belonging to the same group.

[0052] PSCCH on the sidelink carries SCI, and SCI is used to schedule PSSCH. The transmission resource can be indicated in SCI, and the resource is reserved for future transmission. PSFCH is used to feed back sidelink hybrid automatic repeat request acknowledgement (HARQ-ACK) information. After the user determines the sidelink HARQ information, the sidelink HARQ information can be further sent to the base station through PUCCH or PUSCH.

[0053] The reference signal determination method provided by the embodiments of the present application will be described in detail in combination with the specific embodiments and application scenarios of the embodiments of the present application.

[0054] Please refer to Figure 2 ,Figure 2 is a flowchart of a reference signal determination method provided by an embodiment of the present application, which is performed by a terminal, as shown in Figure 2 includes the following steps:

[0055] Step 201, in the case where a first object schedules resources of a second object for sidelink (SL) transmission, performing a first operation;

[0056] The first object and the second object are one of a cell, a frequency point and a carrier, and the first operation includes any of the following:

[0057] determining a target reference signal according to a preset reference signal identifier, the target reference signal being used for path loss measurement of the second object;

[0058] determining the target reference signal according to target control signaling on the first object.

[0059] In the embodiments of the present application, the first object scheduling resources of the second object for SL transmission can be understood as that the resources indicated, configured or scheduled by the target control signaling on the first object are the resources on the second object, and the SL transmission is based on the indicated, configured or scheduled resources. The SL transmission can be understood as SL sending and / or receiving. It should be understood that when the above-mentioned second object is a cell, the second object can also be referred to as an SL cell, when the second object is a frequency point, the second object can also be referred to as an SL frequency point, and when the second object is a carrier, the second object can also be referred to as an SL carrier.

[0060] The above-mentioned target reference signal is used for path loss measurement of the second object, which can be understood as that the path loss result measured based on the target reference signal is used to represent the path loss measurement result of the second object. The first operation can be understood as an operation of determining the target reference signal, which is used for path loss measurement of the second object. It should be understood that in the embodiments of the present application, the path loss measurement based on the target reference signal can be before or after the above-mentioned first operation. In other words, the above-mentioned first operation can be understood as determining the path loss corresponding to the SL transmission, that is, the path loss corresponding to the SL transmission can be determined according to the determined target reference signal.

[0061] Optionally, the preset reference signal identifier can be understood as an index or identifier of the reference signal. For example, the preset reference signal identifier can be represented as a PUSCH path loss reference signal identifier (PUSCH-PathlossReferenceRS-Id) or a sounding reference signal path loss reference signal identifier (SRS-PathlossReferenceRS-Id). It should be understood that in the embodiments of the present application, the preset reference signal identifier can be agreed upon. For example, it can be agreed that the identifier value corresponding to the preset reference signal identifier can be the maximum or minimum or specific identifier value.

[0062] Optionally, the preset reference signal identifier can be an identifier associated with a preset sounding reference signal (SRS) resource set. For example, the preset reference signal is in the SRS resource set 0, and the identifier thereof is related to the SRS resource set 0. At this time, the target reference signal can be understood as an RS in the SRS resource set 0, that is, an RS corresponding to SRS-ResourceSetId = 0. In the embodiments of the present application, in the case of scheduling a second object by a first object to perform sidelink (SL) transmission, the target reference signal is determined according to the preset reference signal identifier or the target control signaling on the first object, so that the path loss measurement result obtained based on the reference signal measurement of the target reference signal can be used as the path loss measurement result of the second object, and then the power control based on the downlink path loss on the second object is realized. Therefore, the embodiments of the present application can improve the reliability of transmission.

[0063] Optionally, in some embodiments, the preset reference signal identifier satisfies at least one of the following conditions:

[0064] If the terminal is provided with at least one first reference signal on the second object, the preset reference signal identifier corresponds to one of the first reference signals.

[0065] If the terminal is not provided with the first reference signal on the second object, the preset reference signal identifier corresponds to a second reference signal of the first object.

[0066] When at least one first reference signal is provided on the second object, an identifier corresponding to the first reference signal is used as a preset reference signal identifier, so that the first reference signal on the second object can be used for path loss measurement, thereby ensuring the accuracy of the obtained path loss. When the first reference signal is not provided on the second object, an identifier corresponding to a second reference signal on the first object can be used as a preset reference signal identifier, so that path loss measurement on the second object can be avoided, thereby avoiding power control, and power control on the second object is realized by using the second reference signal for path loss measurement, thereby improving the reliability of transmission on the second object.

[0067] Optionally, determining the target reference signal according to the target control signaling on the first object can be understood as that the network device explicitly or implicitly indicates the target reference signal through the target control signaling sent on the first object. After receiving the target control signaling, the terminal can determine the target reference signal based on the target control signaling.

[0068] Optionally, in some embodiments, the target control signaling satisfies at least one of the following conditions:

[0069] Condition 1: the target control signaling is the control signaling received most recently before the SL transmission;

[0070] Condition 2: the target control signaling is received at a time point before the start time point of the SL transmission, and the interval between the time point of receiving the target control signaling and the start time point of the SL transmission is greater than N time units, N is a positive integer greater than 1;

[0071] Condition 3: the target control signaling is the control signaling received on a preset frame, a preset subframe, a preset slot or a preset measurement window;

[0072] Condition 4: the target control signaling is control signaling scrambled by a preset radio network temporary identifier (RNTI).

[0073] In this embodiment, the control signaling can be in the format of Downlink Control Information (DCI) 0-X, DCI 3-Y, Radio Resource Control (RRC), Medium Access Control Element (MAC CE), or other higher-layer signaling. That is, the target control signaling can be a first Downlink Control Information (DCI), a second DCI, Radio Resource Control (RRC), or a Media Access Control Element (MAC CE), wherein the first DCI and the second DCI are of different types.

[0074] The first DCI can be the DCI corresponding to DCI 0-X, and the second DCI can be the DCI corresponding to DCI 3-Y. Optionally, the values ​​of X and Y can be set according to actual needs. For example, in some embodiments, the value of X is 1 or 2, and the value of Y is 0 or 1.

[0075] It should be noted that when the target reference signal is indicated by the target control signaling mentioned above, the target reference signal can be indicated by RRC signaling and can be updated by MAC CE later.

[0076] Regarding condition 2 above, the aforementioned time units can be understood as frames, subframes, time slots, seconds, and milliseconds. Taking a time slot as an example, the scheduled SL transmission and the target control signaling are at least N time slots apart.

[0077] Regarding condition 3 above, taking the preset frame as an example, the target control signaling can be specifically understood as the control signaling received by the frame corresponding to System frame number (SFN) 0.

[0078] Regarding condition 4 above, if the control signaling is DCI 0-X, the preset RNTI can be one of the following: Cell RNTI (C-RNTI), ConfiguredScheduling RNTI (CS-RNTI), Semi-Persistent Channel State Information RNTI (SP-CSI-RNTI), or Modulation and Coding Scheme C-RNTI (MCS-C-RNTI). If the control signaling is DCI 3-Y, the preset RNTI can be SL-RNTI or SL-CS-RNTI.

[0079] Optionally, the other higher layer signaling described above can be configured grant configuration signaling.

[0080] Optionally, in some embodiments, when the target control signaling is the first DCI, the determining the target reference signal according to the target control signaling on the first object includes at least one of the following:

[0081] In a case where the first DCI carries a first indication field, determining the target reference signal according to indication information of the first indication field;

[0082] In a case where the first DCI does not carry the first indication field, determining the target reference signal according to a preset reference signal identifier.

[0083] The first DCI described above can be understood as a DCI with a format of DCI 0-X, and the first DCI carries a first indication field, which can be understood as that the first DCI includes the first indication field, and the first indication field includes indication information. In the embodiments of the present application, the indication information of the first indication field can be understood as the value of the first indication field, and the indication information is used to determine the target reference signal. For example, the indication information carried by the first indication field can be an identifier of the target reference signal, and the terminal can determine the target reference signal based on the identifier. When the first DCI does not carry the first indication field, the terminal can directly determine the target reference signal based on a preset reference signal identifier. Specifically, the determination of the target reference signal based on the preset reference signal identifier can refer to the description of the above embodiments, which will not be described here.

[0084] In the embodiments of the present application, the first indication field described above can be a sounding reference signal resource indication field (Sounding Reference Signal resource indicator, SRI).

[0085] Optionally, in some embodiments, when the target control signaling is the second DCI, the determining the target reference signal according to the target control signaling on the first object includes any one of the following:

[0086] Determining a physical downlink control channel (Physical downlink control channel, PDCCH) demodulation reference signal (Demodulation Reference Signal, DMRS) corresponding to the second DCI as the target reference signal;

[0087] Determining the target reference signal according to a second indication field carried in the second DCI.

[0088] The second DCI can be understood as a DCI that can carry the second indication field, and the second DCI is different from the first DCI. In the following embodiments, the DCI with a format of DCI 3-Y is taken as an example for description. At this time, the second DCI includes the second indication field, which can be understood as adding the second indication field in the second DCI. The value of the second indication field can indicate the target reference signal. When the second indication field is not added in the second DCI, the PDCCH DMRS corresponding to the second DCI can be used as the target reference signal.

[0089] In the embodiments of the present application, the first indication field can be a sounding reference signal resource indication field.

[0090] Optionally, in some embodiments, the second object does not have control signaling.

[0091] In the embodiments of the present application, for the second object with control signaling, the control signaling on the second object can be used to determine the target reference signal. Only for the second object without control signaling, the first operation of the present application can be used to determine the target reference signal. For example, the DCI format 0-0 can be the DCI format 0-0 on the cell where the SL resource is located, or can be the DCI format 0-0 on the scheduling cell (i.e., the cell where the SL DCI is located).

[0092] For example, the terminal can determine the power P of the sidelink synchronization signal and PBCH block (S-SSB) transmission occasion in the time slot i according to the following manner S-SSB (i):

[0093]

[0094] wherein, P CMAX is the maximum transmission power supported by the user; P O,S-SSB is the value of p0-DL-S-SSB (if provided); otherwise, P S-SSB (i) = P CMAX ; alpha S-SSB is the value of alpha-DL-S-SSB (if provided); otherwise, alpha S-SSB = 1; PL is the path loss value corresponding to the transmission, is the number of radio bearers (RBs) contained in a S-SSB transmission under a sub-carrier space (SCS) configuration mu.

[0095] Optionally, in some embodiments, PL = PL b,f,c (q d), i.e. PL is the downlink path loss calculated for the active downlink bandwidth part of the carrier f of the serving cell c in dB, for the terminal using the reference signal with index q d , i.e. PL is the downlink path loss calculated for the active downlink bandwidth part of the carrier f of the serving cell c in dB, for the terminal using the reference signal with index q

[0096] Further, the target reference signal can comprise at least one of the following:

[0097] When the terminal is configured to monitor PDCCH to detect DCI format 0-0, the RS resource used by the terminal to determine the PUSCH transmission power scheduled by DCI format 0-0;

[0098] When the terminal is not configured to monitor PDCCH to detect DCI format 0-0, the RS resource corresponding to the SSB used by the terminal to obtain the Master Information Block (MIB).

[0099] Optionally, in the embodiments of the present application, the DCI format 0-0 can be the DCI format 0-0 on the cell where the SL resource is located, or the DCI format 0-0 on the scheduling cell (i.e. the cell where the SL DCI is located).

[0100] Of course, in some embodiments, the target reference signal can be determined by the above-mentioned first operation regardless of whether there is a control signal on the second object. In other words, in some embodiments, the target reference signal used to determine the path loss on all non-self-scheduling second objects can be determined by the above-mentioned first operation.

[0101] Optionally, in some embodiments, when the first object is a cell, the first object is a primary cell or a secondary cell.

[0102] In the embodiments of the present application, the application is in the cross-carrier scheduling scenario, at this time there are at least two cells, the first cell indicates or configures or schedules the SL resource of the second cell for transmission, wherein the first cell can be understood as the first object, and the second cell can be understood as the second object. Optionally, in some embodiments, the second cell is an SCell, and there is no control signaling on the second cell, and the first cell is a Pcell or an SCell.

[0103] It should be understood that, similarly, when the first object is a frequency point, the first object is a primary frequency point or a secondary frequency point. When the first object is a carrier, the first object is a primary carrier or a secondary carrier. It should be noted that the definitions of the primary and secondary are made according to the corresponding functions, wherein the primary frequency point and the primary carrier correspond to the primary cell, and the secondary frequency point and the secondary carrier correspond to the secondary cell.

[0104] Optionally, in some embodiments, the terminal is configured with at least two objects, and at least part of the at least two objects use the same target reference signal, and the at least two objects include the first object and the second object.

[0105] In the embodiments of the present application, the second object is taken as an example for SL Cell in the SL carrier aggregation scenario. At this time, there are at least two SL Cells, and the reference signal configurations for downlink loss measurement of each SL Cell can be the same or different. For example, the terminal uses the same reference signal configuration in at least part of the SL Cells, and the reference signal configuration is used to determine the target reference signal for loss measurement.

[0106] It should be understood that the SL Cell described above can be scheduled by other Cells (cross-carrier scheduling), can be self-scheduled, or part of the SL Cells can be self-scheduled and the other part can be scheduled by other Cells.

[0107] In order to better understand the application, the implementation of the present application is described in detail through some embodiments. Embodiment one: in the cross-carrier scheduling scenario, in the case of determining the target reference signal according to the preset reference signal identifier, the following two schemes are included:

[0108] Scheme 1, assuming that the second Cell is an SL Cell, the first Cell schedules the SL transmission on the second Cell, and the UE is configured with 4 reference signal resource indexes and the corresponding reference signal configuration set of each index through the parameter PUSCH-PathlossReferenceRS in the second Cell. Each reference signal resource index set can include at least one of the synchronization signal block (Synchronization Signal and PBCH block, SSB) index set and the CSI-RS resource index set, which are provided by the parameters ssb-Index and csi-RS-Index respectively. At this time, the UE selects the reference signal corresponding to the identifier 0 (pusch-PathlossReferenceRS-Id=0) in the PUSCH-PathlossReferenceRS for downlink loss measurement of SL transmission power control.

[0109] Scheme 2, assuming that the second Cell is an SL Cell, the first Cell schedules the SL transmission on the second Cell, and the UE is not configured with a reference signal in the second Cell, then the UE selects the reference signal corresponding to pusch-PathlossReferenceRS-Id=0 in the reference signal of the first Cell for downlink loss measurement of SL transmission power control.

[0110] Embodiment 2: In the scenario of cross-carrier scheduling, in the case of determining target reference signal according to the control signaling of the first object, assuming the second Cell is SL Cell, the first Cell schedules SL transmission on the second Cell, the UE is provided with SRS resource index-PUSCH power control (SRI-PUSCH-PowerControl) and more than one PUSCH-PathlossReferenceRS-Id value, then the UE obtains the mapping from SRI indication field of DCI scheduling PUSCH transmission to PUSCH-PathlossReferenceRS-Id value from SRS resource index-PUSCH power control identification (sri-PUSCH-PowerControlId) in SRI-PUSCH-PowerControl, and determines the reference signal for downlink loss measurement for SL transmission power control according to the value of PUSCH-PathlossReferenceRS-Id.

[0111] Embodiment 3: In the scenario of carrier aggregation, in the case of determining target reference signal according to the control signaling of the first object, including the following two schemes:

[0112] Scheme 3, assuming that the first Cell schedules SL transmission on the first SL Cell, and the second SL Cell uses the same reference signal configuration as the first SL Cell for downlink loss measurement for SL transmission power control. If the PUSCH transmission of the first Cell is configured with ConfiguredGrantConfig, and the rrc-ConfiguredUplinkGrant is contained in ConfiguredGrantConfig, then the value of the reference signal index, such as pathlossReferenceIndex, will be provided by rrc-ConfiguredUplinkGrant, and the UE performs downlink loss measurement for SL transmission power control according to the corresponding reference signal.

[0113] In Scheme 4, it is assumed that the first Cell schedules SL transmission on the first SL Cell, and the second SL Cell adopts the same reference signal configuration as the first SL Cell for downlink loss measurement for SL transmission. If the PUSCH transmission of the first Cell is configured by ConfiguredGrantConfig, and the ConfiguredGrantConfig does not contain rrc-ConfiguredUplinkGrant, the UE determines the reference signal index value PUSCH-PathlossReferenceRS-Id according to the value of the SRI indication field in the DCI activating the PUSCH transmission. If the DCI activating the PUSCH transmission does not contain the SRI indication field, the UE selects the reference signal corresponding to PUSCH-PathlossReferenceRS-Id = 0.

[0114] Referring to Figure 3 , Figure 3 is a flowchart of a reference signal processing method provided by an embodiment of the present application, which is performed by a network device, as shown in Figure 3 , the method comprises the following steps:

[0115] In step 301, in the case where a first object schedules a resource of a second object for sidelink (SL) transmission, target control signaling is sent to a terminal on the first object, the target control signaling being used to determine a target reference signal, and the target reference signal being used for loss measurement of the second object.

[0116] Optionally, the target control signaling satisfies at least one of the following conditions:

[0117] The target control signaling is the control signaling received most recently before the SL transmission.

[0118] The target control signaling is received at a time point before the start time point of the SL transmission, and the interval between the time point of receiving the target control signaling and the start time point of the SL transmission is greater than N time units, N being a positive integer greater than 1.

[0119] The target control signaling is the control signaling received on a preset frame, a preset subframe, a preset time slot, or a preset measurement window.

[0120] The target control signaling is control signaling scrambled by a preset wireless network temporary identifier.

[0121] Optionally, the target control signaling is a first downlink control information (DCI), a second DCI, a radio resource control (RRC), or a medium access control (MAC) element, wherein the types of the first DCI and the second DCI are different.

[0122] Optionally, when the target control signaling is the first DCI, the determining the target reference signal according to the target control signaling on the first object comprises at least one of the following:

[0123] In a case where the first DCI carries a first indication field, determining the target reference signal according to indication information of the first indication field;

[0124] In a case where the first DCI does not carry the first indication field, determining the target reference signal according to a preset reference signal identifier.

[0125] Optionally, the first indication field is a sounding reference signal resource indication field.

[0126] Optionally, when the target control signaling is the second DCI, the determining the target reference signal according to the target control signaling on the first object comprises any one of the following:

[0127] determining a physical downlink control channel demodulation reference signal corresponding to the second DCI as the target reference signal;

[0128] determining the target reference signal according to a second indication field carried in the second DCI.

[0129] Optionally, the second indication field is a sounding reference signal resource indication field.

[0130] Optionally, the preset reference signal identifier satisfies at least one of the following:

[0131] If the terminal is provided with at least one first reference signal on a second object, the preset reference signal identifier corresponds to one of the first reference signals;

[0132] If the terminal is not provided with the first reference signal on the second object, the preset reference signal identifier corresponds to a second reference signal of the first object.

[0133] Optionally, there is no control signaling on the second object.

[0134] Optionally, in a case where the first object is a cell, the first object is a primary cell or a secondary cell.

[0135] Optionally, in a case where the terminal is configured with at least two objects, at least part of the at least two objects use the same target reference signal, and the at least two objects include the first object and the second object.

[0136] It should be noted that the embodiment as Figure 2 the embodiment shown in the embodiment corresponds to the implementation of the network device, and the specific implementation can be referred toFigure 2 The embodiments shown herein, and the benefits achieved therein, will not be repeated here to avoid repetition.

[0137] It should be noted that the reference signal determination method provided in this application embodiment can be executed by a reference signal determination device, or by a control module within that device for executing the reference signal determination method. This application embodiment uses the execution of the reference signal determination method by a reference signal determination device as an example to illustrate the reference signal determination device provided in this application embodiment.

[0138] Please see Figure 4 , Figure 4 This is a structural diagram of a reference signal determining device provided in an embodiment of this application, as shown below. Figure 4 As shown, the reference signal determining device 400 includes:

[0139] Execution module 401 is used to perform a first operation when the first object schedules the resources of the second object for side link SL transmission;

[0140] Wherein, the first object and the second object are one of a cell, a frequency point, and a carrier, and the first operation includes any one of the following:

[0141] A target reference signal is determined based on a preset reference signal identifier, and the target reference signal is used for road loss measurement of the second object;

[0142] The target reference signal is determined based on the target control signaling on the first object.

[0143] Optionally, the preset reference signal identifier satisfies at least one of the following:

[0144] If at least one first reference signal is provided to the terminal on the second object, then the preset reference signal identifier corresponds to one first reference signal;

[0145] If the terminal is not provided with the first reference signal on the second object, then the preset reference signal identifier corresponds to a second reference signal of the first object.

[0146] Optionally, the target control signaling satisfies at least one of the following:

[0147] The target control signaling is the control signaling most recently received before the SL transmission;

[0148] The time when the target control signaling is received is before the time when the SL transmission starts, and the time interval between the time when the target control signaling is received and the time when the SL transmission starts is greater than N time units, where N is a positive integer greater than 1.

[0149] the target control signaling is control signaling received on a preset frame, a preset subframe, a preset time slot, or a preset measurement window;

[0150] the target control signaling is control signaling scrambled by a preset radio network temporary identifier.

[0151] Optionally, the target control signaling is a first downlink control information (DCI), a second DCI, a radio resource control (RRC), or a medium access control (MAC) CE, where the first DCI and the second DCI are of different types.

[0152] Optionally, when the target control signaling is the first DCI, the determining the target reference signal according to the target control signaling on the first object includes at least one of the following:

[0153] in a case where the first DCI carries a first indication field, determining the target reference signal according to indication information of the first indication field;

[0154] in a case where the first DCI does not carry the first indication field, determining the target reference signal according to a preset reference signal identifier.

[0155] Optionally, the first indication field is a sounding reference signal resource indication field.

[0156] Optionally, when the target control signaling is the second DCI, the determining the target reference signal according to the target control signaling on the first object includes any one of the following:

[0157] determining a physical downlink control channel demodulation reference signal corresponding to the second DCI as the target reference signal;

[0158] determining the target reference signal according to a second indication field carried in the second DCI.

[0159] Optionally, the second indication field is a sounding reference signal resource indication field.

[0160] Optionally, no control signaling exists on the second object.

[0161] Optionally, in a case where the first object is a cell, the first object is a primary cell or a secondary cell.

[0162] Optionally, in a case where the terminal is configured with at least two objects, at least part of the at least two objects use the same target reference signal, and the at least two objects include the first object and a second object.

[0163] The reference signal determination apparatus provided by the embodiments of the present application can achieve Figure 2In the method embodiment of the terminal, various processes are implemented, and details are not repeated here.

[0164] It should be noted that the reference signal determination method provided in the embodiment of the application can be executed by a reference signal determination device, or a control module in the reference signal determination device for executing the reference signal determination method. In the embodiment of the application, the reference signal determination device executes the reference signal determination method as an example, and the reference signal determination device provided in the embodiment of the application is described.

[0165] It should be noted that the reference signal processing method provided in the embodiment of the application can be executed by a reference signal determination device, or a control module in the reference signal determination device for executing the reference signal processing method. In the embodiment of the application, the reference signal determination device executes the reference signal processing method as an example, and the reference signal determination device provided in the embodiment of the application is described.

[0166] Please refer to Figure 5 , Figure 5 is a structure diagram of a reference signal processing device provided in the embodiment of the application, as Figure 5 shown, the reference signal processing device 500 includes:

[0167] The sending module 501 is configured to, in the case that a first object schedules a resource of a second object for sidelink (SL) transmission, send target control signaling to a terminal on the first object, the target control signaling being used to determine a target reference signal, and the target reference signal being used for path loss measurement of the second object.

[0168] Optionally, the target control signaling satisfies at least one of the following conditions:

[0169] The target control signaling is control signaling that is received most recently before the SL transmission;

[0170] The target control signaling is received at a time point before a start time point of the SL transmission, and an interval between the time point of receiving the target control signaling and the start time point of the SL transmission is greater than N time units, N being a positive integer greater than 1;

[0171] The target control signaling is control signaling received on a preset frame, a preset subframe, a preset time slot, or a preset measurement window;

[0172] The target control signaling is control signaling scrambled by a preset wireless network temporary identifier.

[0173] Optionally, the target control signaling is a first downlink control information (DCI), a second DCI, a radio resource control (RRC), or a medium access control (MAC) CE, wherein the first DCI and the second DCI are of different types.

[0174] Optionally, when the target control signaling is the first DCI, the determining the target reference signal according to the target control signaling on the first object comprises at least one of the following:

[0175] In a case where the first DCI carries a first indication field, determining the target reference signal according to indication information of the first indication field;

[0176] In a case where the first DCI does not carry the first indication field, determining the target reference signal according to a preset reference signal identifier.

[0177] Optionally, the first indication field is a sounding reference signal resource indication field.

[0178] Optionally, when the target control signaling is the second DCI, the determining the target reference signal according to the target control signaling on the first object comprises any one of the following:

[0179] determining a physical downlink control channel demodulation reference signal corresponding to the second DCI as the target reference signal;

[0180] determining the target reference signal according to a second indication field carried in the second DCI.

[0181] Optionally, the second indication field is a sounding reference signal resource indication field.

[0182] Optionally, the preset reference signal identifier satisfies at least one of the following:

[0183] If the terminal is provided with at least one first reference signal on a second object, the preset reference signal identifier corresponds to one of the first reference signals;

[0184] If the terminal is not provided with the first reference signal on the second object, the preset reference signal identifier corresponds to a second reference signal of the first object.

[0185] Optionally, there is no control signaling on the second object.

[0186] Optionally, in a case where the first object is a cell, the first object is a primary cell or a secondary cell.

[0187] Optionally, in a case where the terminal is configured with at least two objects, at least part of the at least two objects use the same target reference signal, and the at least two objects include the first object and the second object.

[0188] The reference signal processing apparatus provided by the embodiments of the present application can achieve Figure 3The various processes implemented by the network device in the method embodiment of the present application will not be repeated here to avoid repetition.

[0189] The reference signal determining apparatus and the reference signal processing apparatus in the embodiments of the present application can be apparatuses, components in terminals, integrated circuits, or chips. The apparatuses can be mobile terminals or non-mobile terminals. Exemplarily, the mobile terminals can include, but are not limited to, the types of the terminal 11 listed above, and the non-mobile terminals can be servers, network attached storages (NAS), personal computers (PCs), televisions (TVs), cashiers, self-service machines, and the like, which are not limited in the embodiments of the present application.

[0190] The reference signal determining apparatus and the reference signal processing apparatus in the embodiments of the present application can be apparatuses with operating systems. The operating systems can be Android operating systems, ios operating systems, or other possible operating systems, which are not limited in the embodiments of the present application.

[0191] The reference signal determining apparatus and the reference signal processing apparatus provided in the embodiments of the present application can implement Figure 2 to Figure 3 the various processes implemented by the method embodiments and achieve the same technical effects. The various processes will not be repeated here to avoid repetition.

[0192] Optionally, as shown in Figure 6 the embodiments of the present application further provide a communication device 600, which includes a processor 601, a memory 602, programs or instructions stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a terminal, the programs or instructions are executed by the processor 601 to implement the various processes of the above-mentioned reference signal determining method embodiments and achieve the same technical effects. When the communication device 600 is a network side device, the programs or instructions are executed by the processor 601 to implement the various processes of the above-mentioned reference signal processing method embodiments and achieve the same technical effects. The various processes will not be repeated here to avoid repetition.

[0193] Figure 7 A hardware structure schematic diagram of a terminal for implementing the various embodiments of the present application.

[0194] The terminal 700 includes, but is not limited to, a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710, and the like.

[0195] Those skilled in the art can understand that the terminal 700 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 710 through a power management system, so that the power management system can realize the functions of managing charging, discharging, and power consumption management. Figure 7 The terminal structure shown in the figure is not a limitation on the terminal, and the terminal can include more or fewer components than shown, or combine certain components, or different component arrangements, which are not described here.

[0196] It should be understood that in the embodiments of the present application, the input unit 704 can include a graphics processor (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 can include a display panel 7061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 can include two parts of a touch detection device and a touch controller. The other input devices 7072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, etc., which are not described here.

[0197] In the embodiments of the present application, the radio frequency unit 701 receives the downlink data from the network side device and processes it by the processor 710; in addition, it sends the uplink data to the network device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0198] The memory 709 can be used to store software programs or instructions and various data. The memory 709 can mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area can store an operating system, at least one application program or instruction required by a function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 709 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0199] Processor 710 may include one or more processing units; optionally, processor 710 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0200] The processor 710 is used to perform the first operation when the first object schedules the resources of the second object for side link SL transmission.

[0201] Wherein, the first object and the second object are one of a cell, a frequency point, and a carrier, and the first operation includes any one of the following:

[0202] A target reference signal is determined based on a preset reference signal identifier, and the target reference signal is used for road loss measurement of the second object;

[0203] The target reference signal is determined based on the target control signaling on the first object.

[0204] It should be understood that, in this embodiment, the processor 710 and the radio frequency unit 701 are capable of achieving... Figure 2 The various processes implemented by the terminal in the method embodiment will not be described again here to avoid repetition.

[0205] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network device 800 includes an antenna 801, a radio frequency (RF) device 802, and a baseband device 803. The antenna 801 is connected to the RF device 802. In the uplink direction, the RF device 802 receives information through the antenna 801 and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be transmitted and sends it to the RF device 802. The RF device 802 processes the received information and transmits it through the antenna 801.

[0206] The aforementioned frequency band processing device can be located in the baseband device 803. The method executed by the network-side device in the above embodiments can be implemented in the baseband device 803, which includes a processor 804 and a memory 805.

[0207] The baseband device 803 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips, for example, is a processor 804, which is connected to a memory 805 to call the program in the memory 805 and execute the network device operations shown in the above method embodiment.

[0208] The baseband device 803 can further include a network interface 806 for interacting with the radio frequency device 802, which is, for example, a common public radio interface (CPRI).

[0209] Specifically, the network side device of the embodiment of the present application further includes instructions or programs stored on the memory 805 and executable on the processor 804, and the processor 804 invokes the instructions or programs in the memory 805 to execute the method performed by each module shown in the above embodiments and achieve the same technical effects. To avoid repetition, the details are not described here. Figure 5 The method performed by each module shown in the above embodiments and achieve the same technical effects. To avoid repetition, the details are not described here.

[0210] The embodiment of the present application also provides a readable storage medium, and the readable storage medium stores programs or instructions, which are executed by a processor to implement each process of the above-mentioned reference signal determination method or reference signal processing method embodiment and achieve the same technical effects. To avoid repetition, the details are not described here.

[0211] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0212] The embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a network device program or instructions to implement each process of the above-mentioned reference signal processing method embodiment and achieve the same technical effects. To avoid repetition, the details are not described here.

[0213] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system level chip, a system chip, a chip system or a system on chip, etc.

[0214] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the method and apparatus of the present application can be carried out by more than one process, method, article, or apparatus either simultaneously, concurrently, or with intervening action that are carried out at the same time, either in a simultaneous fashion or in a fashion that is interleaved in time. For example, the described methods can be performed in a different order from that described, and / or various steps can be combined or omitted, and / or additional steps can be added, without departing from the scope of the present application. Also, features described with respect to certain examples can be combined in other examples.

[0215] From the above description of the embodiments, it is clear that the above-described method of the embodiments can be realized by means of software and a general-purpose hardware platform as necessary, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such an understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk) and includes a number of instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a base station) to execute the methods described in the various embodiments of the present application.

[0216] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative rather than limiting, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, and all of them belong to the protection of the present application.

Claims

1. A reference signal determination method, executed by a terminal, characterized in that, include: When the first object schedules the resources of the second object for side-link SL transmission, the first operation is performed; Wherein, the first object and the second object are cells, and the first operation includes any one of the following: A target reference signal is determined based on a preset reference signal identifier, and the target reference signal is used for road loss measurement of the second object; The reference signal for determining the transmission power of the PUSCH of the target control signaling scheduling on the first object is the target reference signal; The target control signaling is in DCI format 0-0, the first object is the cell that schedules SL resources, and the second object is the cell where the SL resources are located.

2. The method according to claim 1, characterized in that, The first object and the second object are the same.

3. The method according to claim 1, characterized in that, The method further includes: The terminal determines the power of the SL transmission based on the path loss corresponding to the target reference signal.

4. The method according to claim 1, characterized in that, The preset reference signal identifier satisfies at least one of the following: If at least one first reference signal is provided to the terminal on the second object, then the preset reference signal identifier corresponds to one first reference signal; If the terminal is not provided with the first reference signal on the second object, then the preset reference signal identifier corresponds to a second reference signal of the first object.

5. The method according to claim 1, characterized in that, The target control signaling satisfies at least one of the following: The target control signaling is the control signaling most recently received before the SL transmission; The time when the target control signaling is received is before the time when the SL transmission starts, and the time interval between the time when the target control signaling is received and the time when the SL transmission starts is greater than N time units, where N is a positive integer greater than 1. The target control signaling is the control signaling received on a preset frame, preset subframe, preset time slot, or preset measurement window. The target control signaling is control signaling scrambled with a preset wireless network temporary identifier.

6. The method according to claim 1, characterized in that, The target control signaling is a first downlink control information (DCI), a second DCI, a radio resource control (RRC) or a media access control unit (MAC CE), wherein the first DCI and the second DCI are of different types.

7. The method according to claim 6, characterized in that, When the target control signaling is the first DCI, determining the target reference signal based on the target control signaling on the first object includes at least one of the following: When the first DCI carries a first indication field, the target reference signal is determined based on the indication information of the first indication field; If the first DCI does not carry the first indication field, the target reference signal is determined according to a preset reference signal identifier.

8. The method according to claim 7, characterized in that, The first indication field is the detection reference signal resource indication field.

9. The method according to claim 7, characterized in that, When the target control signaling is the second DCI, determining the target reference signal based on the target control signaling on the first object includes any one of the following: The physical downlink control channel demodulation reference signal corresponding to the second DCI is determined as the target reference signal; The target reference signal is determined based on the second indication field carried in the second DCI.

10. The method according to claim 9, characterized in that, The second indication field is the detection reference signal resource indication field.

11. The method according to claim 1, characterized in that, There is no control signaling on the second object.

12. The method according to claim 1, characterized in that, When the first object is a cell, the first object is either a primary cell or a secondary cell.

13. The method according to claim 1, characterized in that, When the terminal is configured with at least two objects, at least some of the at least two objects use the same target reference signal, and the at least two objects include the first object and the second object mentioned above.

14. A reference signal processing method, executed by a network device, characterized in that, include: When the first object schedules the resources of the second object for side link SL transmission, a target control signaling is sent to the terminal on the first object. The target control signaling is used to determine the target reference signal, and the target reference signal is used for path loss measurement of the second object. The target control signaling is in DCI format 0-0, the first object is the cell that schedules SL resources, and the second object is the cell where the SL resources are located. The target reference signal is a reference signal used by the terminal to determine the transmission power of the PUSCH in DCI format 0-0 scheduling on the first object.

15. The method according to claim 14, characterized in that, The first object and the second object are the same.

16. The method according to claim 14, characterized in that, The power transmitted by the SL is the power determined by the terminal based on the path loss corresponding to the target reference signal.

17. The method according to claim 14, characterized in that, The target control signaling satisfies at least one of the following: The target control signaling is the control signaling most recently received before the SL transmission; The time when the target control signaling is received is before the time when the SL transmission starts, and the time interval between the time when the target control signaling is received and the time when the SL transmission starts is greater than N time units, where N is a positive integer greater than 1. The target control signaling is the control signaling received on a preset frame, preset subframe, preset time slot, or preset measurement window. The target control signaling is control signaling scrambled with a preset wireless network temporary identifier.

18. The method according to claim 14, characterized in that, The target control signaling is a first downlink control information (DCI), a second DCI, a radio resource control (RRC) or a media access control unit (MAC CE), wherein the first DCI and the second DCI are of different types.

19. The method according to claim 18, characterized in that, When the target control signaling is the first DCI, determining the target reference signal based on the target control signaling on the first object includes at least one of the following: When the first DCI carries a first indication field, the target reference signal is determined based on the indication information of the first indication field; If the first DCI does not carry the first indication field, the target reference signal is determined according to a preset reference signal identifier.

20. The method according to claim 19, characterized in that, The first indication field is the detection reference signal resource indication field.

21. The method according to claim 19, characterized in that, When the target control signaling is the second DCI, determining the target reference signal based on the target control signaling on the first object includes any one of the following: The physical downlink control channel demodulation reference signal corresponding to the second DCI is determined as the target reference signal; The target reference signal is determined based on the second indication field carried in the second DCI.

22. The method according to claim 21, characterized in that, The second indication field is the detection reference signal resource indication field.

23. The method according to claim 19, characterized in that, The preset reference signal identifier satisfies at least one of the following: If at least one first reference signal is provided to the terminal on the second object, then the preset reference signal identifier corresponds to one first reference signal; If the terminal is not provided with the first reference signal on the second object, then the preset reference signal identifier corresponds to a second reference signal of the first object.

24. The method according to claim 14, characterized in that, There is no control signaling on the second object.

25. The method according to claim 14, characterized in that, When the first object is a cell, the first object is either a primary cell or a secondary cell.

26. The method according to claim 14, characterized in that, When the terminal is configured with at least two objects, at least some of the at least two objects use the same target reference signal, and the at least two objects include the first object and the second object mentioned above.

27. A reference signal determining device, characterized in that, include: The execution module is used to perform the first operation when the first object schedules the resources of the second object for side link SL transmission; Wherein, the first object and the second object are one of a cell, a frequency point, and a carrier, and the first operation includes any one of the following: A target reference signal is determined based on a preset reference signal identifier, and the target reference signal is used for road loss measurement of the second object; The reference signal for determining the transmission power of the PUSCH of the target control signaling scheduling on the first object is the target reference signal; The target control signaling is in DCI format 0-0, the first object is the cell that schedules SL resources, and the second object is the cell where the SL resources are located.

28. The apparatus according to claim 27, characterized in that, The preset reference signal identifier satisfies at least one of the following: If at least one first reference signal is provided to the terminal on the second object, then the preset reference signal identifier corresponds to one first reference signal; If the terminal is not provided with the first reference signal on the second object, then the preset reference signal identifier corresponds to a second reference signal of the first object.

29. The apparatus according to claim 27, characterized in that, The target control signaling satisfies at least one of the following: The target control signaling is the control signaling most recently received before the SL transmission; The time when the target control signaling is received is before the time when the SL transmission starts, and the time interval between the time when the target control signaling is received and the time when the SL transmission starts is greater than N time units, where N is a positive integer greater than 1. The target control signaling is the control signaling received on a preset frame, preset subframe, preset time slot, or preset measurement window. The target control signaling is control signaling scrambled with a preset wireless network temporary identifier.

30. A reference signal processing apparatus, characterized in that, include: The sending module is used to send target control signaling to the terminal on the first object when the first object schedules the resources of the second object for side link SL transmission. The target control signaling is used to determine the target reference signal, and the target reference signal is used for path loss measurement of the second object. The target control signaling is in DCI format 0-0, the first object is the cell that schedules SL resources, and the second object is the cell where the SL resources are located. The target reference signal is a reference signal used by the terminal to determine the transmission power of the PUSCH in DCI format 0-0 scheduling on the first object.

31. The apparatus according to claim 30, characterized in that, The target control signaling satisfies at least one of the following: The target control signaling is the control signaling most recently received before the SL transmission; The time when the target control signaling is received is before the time when the SL transmission starts, and the time interval between the time when the target control signaling is received and the time when the SL transmission starts is greater than N time units, where N is a positive integer greater than 1. The target control signaling is the control signaling received on a preset frame, preset subframe, preset time slot, or preset measurement window. The target control signaling is control signaling scrambled with a preset wireless network temporary identifier.

32. A terminal, characterized in that, include: A memory, a processor, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the reference signal determination method as described in any one of claims 1 to 13.

33. A network device, characterized in that, include: A memory, a processor, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the reference signal processing method as described in any one of claims 14 to 26.

34. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the reference signal determination method as described in any one of claims 1 to 13, or, when executed by a processor, implement the steps of the reference signal processing method as described in any one of claims 14 to 26.

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