Reference signal transmission method and apparatus, computer-readable storage medium

Abstract

A reference signal transmission method and device, and a computer readable storage medium, the reference signal transmission method comprising: receiving sidelink control information; the sidelink control information being used to indicate configuration information of a positioning reference signal, the configuration information comprising transmission resources of the positioning reference signal; if transmission resources of the sidelink control information and transmission resources of the positioning reference signal are located in different frequency domain resource sets, performing frequency domain resource set switching to switch to a frequency domain resource set in which the transmission resources of the positioning reference signal are located; and receiving the positioning reference signal on the transmission resources of the positioning reference signal. The above scheme can realize configuration of PRS transmission resources and measurement of PRS.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a reference signal transmission method and apparatus, and a computer-readable storage medium. Background Technology

[0002] As 5G technology further evolves, 3GPP will conduct research on positioning based on sidelinks. In the current V2X protocol, sidelinks do not support the transmission of positioning-related reference signals.

[0003] In direct-link transmission, transmission resources are scarce, making it difficult to allocate dedicated Positioning Reference Signal (PRS) transmission resources for each terminal device. Therefore, the PRS transmission resources for terminal devices need to be determined through resource awareness and selection.

[0004] In the existing technology, there is no corresponding solution for configuring PRS transmission resources and measuring PRS. Summary of the Invention

[0005] One of the objectives of this invention is to provide a reference signal transmission method to realize the configuration of PRS transmission resources and PRS measurement in direct link positioning.

[0006] To achieve the above objectives, embodiments of the present invention provide a reference signal transmission method, comprising: receiving direct link control information; the direct link control information being used to indicate configuration information of a positioning reference signal, the configuration information including transmission resources of the positioning reference signal; if the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, performing a frequency domain resource set switching to switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located; and receiving the positioning reference signal on the transmission resources of the positioning reference signal.

[0007] Optionally, the execution of frequency domain resource set switching includes: performing frequency domain resource set switching within the transmission delay after receiving the direct link control information.

[0008] Optionally, the transmission delay consists of X time units.

[0009] Optionally, the transmission resource for the positioning reference signal is: the Nth reserved periodic reference positioning signal transmission resource after sending the direct link control information.

[0010] Optionally, the value of N is pre-configured; or, the value of N is indicated by the pass-through link control information.

[0011] Optionally, the frequency domain resource set includes at least one of the following: carrier, resource pool, and partial bandwidth.

[0012] To achieve the above objectives, embodiments of the present invention also provide another reference signal transmission method, comprising: sending direct link control information; the direct link control information being used to indicate configuration information of a positioning reference signal, the configuration information including transmission resources of the positioning reference signal; if the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, performing a frequency domain resource set switching to switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located; and transmitting the positioning reference signal on the transmission resources of the positioning reference signal.

[0013] Optionally, the frequency domain resource set switching includes: performing frequency domain resource set switching within the transmission delay after sending the direct link control information.

[0014] Optionally, transmitting the positioning reference signal on the transmission resources of the positioning reference signal includes: determining the time domain location of the transmission resources of the positioning reference signal based on the time slot and transmission delay of the direct link control information.

[0015] Optionally, the transmission delay is pre-configured; or, it is indicated by the pass-through link control information.

[0016] Optionally, the transmission delay consists of X time units.

[0017] Optionally, the transmission resource for the positioning reference signal is: the Nth reserved periodic reference positioning signal transmission resource after sending the direct link control information.

[0018] Optionally, the value of N is pre-configured; or, the value of N is indicated by the pass-through link control information.

[0019] Optionally, the frequency domain resource set includes at least one of the following: carrier, resource pool, and partial bandwidth.

[0020] To achieve the above objectives, embodiments of the present invention also provide another reference signal transmission method, comprising: receiving configuration information of a positioning reference signal; and sending a request message, wherein the request message is used to indicate a request to perform positioning reference signal measurement.

[0021] Optionally, sending the request message includes: sending the request message through a physical pass-through link feedback channel associated with the time slot where the configuration information of the received positioning reference signal is located.

[0022] Optionally, the physical direct link feedback channel is provided with an indicator bit, the value of which is used to indicate a request for positioning reference signal measurement.

[0023] Optionally, the reference signal transmission method further includes: determining the measurement timing of the positioning reference signal based on the configuration information of the positioning reference signal.

[0024] Optionally, after determining the measurement timing of the positioning reference signal, the method further includes: excluding resources that overlap with the time domain of the measurement timing when selecting or reserving resources.

[0025] This invention also provides another reference signal transmission method, comprising: sending configuration information for a positioning reference signal; and receiving a request message, wherein the request message is used to indicate a request to perform a positioning reference signal measurement.

[0026] Optionally, receiving the request message includes receiving the request message through a physical-side link feedback channel associated with the time slot where the configuration information of the receiving positioning reference signal is located.

[0027] Optionally, an indicator bit is set in the physical side link feedback channel, and the value of the indicator bit is used to indicate a request to perform positioning reference signal measurement.

[0028] This invention also provides a reference signal transmission device, comprising: a first receiving unit for receiving direct link control information; the direct link control information is used to indicate configuration information of a positioning reference signal, the configuration information including transmission resources of the positioning reference signal; a first execution unit for performing frequency domain resource set switching, switching to the frequency domain resource set where the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets; and a second receiving unit for receiving the positioning reference signal on the transmission resources of the positioning reference signal.

[0029] This invention also provides another reference signal transmission device, comprising: a first transmitting unit, configured to transmit direct link control information; the direct link control information is used to indicate configuration information of a positioning reference signal, the configuration information including transmission resources of the positioning reference signal; a second executing unit, configured to perform frequency domain resource set switching, switching to the frequency domain resource set where the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets; and a third transmitting unit, configured to transmit the positioning reference signal on the transmission resources of the positioning reference signal.

[0030] This invention also provides another reference signal transmission device, comprising: a third receiving unit for receiving configuration information of a positioning reference signal; and a fourth sending unit for sending a request message, the request message indicating a request to perform positioning reference signal measurement.

[0031] This invention also provides another reference signal transmission device, comprising: a fifth transmitting unit for transmitting configuration information of a positioning reference signal; and a fourth receiving unit for receiving a request message, the request message indicating a request to perform a positioning reference signal measurement.

[0032] This invention also provides a computer-readable storage medium, which is a non-volatile or non-transient storage medium, storing a computer program thereon. When the computer program is run by a processor, it executes the steps of any of the above-described reference signal transmission methods.

[0033] This invention also provides another reference signal transmission apparatus, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor runs the computer program, it performs the steps of any of the above-described reference signal transmission methods.

[0034] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0035] The system receives direct link control information, which includes configuration information for the positioning reference signal, such as transmission resources. If the transmission resources in the direct link control information differ from the frequency domain resource set of the positioning reference signal's transmission resources, the system switches to the frequency domain resource set of the positioning reference signal's transmission resources and receives the positioning reference signal on those resources. This enables the configuration of the positioning reference signal's transmission resources and the measurement of the positioning reference signal.

[0036] The system receives configuration information for the positioning reference signal (PRS) and sends a request message instructing the system to perform PRS measurement. This enables the configuration of PRS transmission resources and the measurement of the PRS, thereby achieving direct-link positioning. Attached Figure Description

[0037] Figure 1 This is a flowchart of a reference signal transmission method according to an embodiment of the present invention;

[0038] Figure 2 This is a flowchart of another reference signal transmission method in an embodiment of the present invention;

[0039] Figure 3This is a flowchart of another reference signal transmission method in an embodiment of the present invention;

[0040] Figure 4 This is a flowchart of another reference signal transmission method in an embodiment of the present invention;

[0041] Figure 5 This is a schematic diagram of the structure of a reference signal transmission device according to an embodiment of the present invention;

[0042] Figure 6 This is a schematic diagram of another reference signal transmission device in an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of another reference signal transmission device in an embodiment of the present invention;

[0044] Figure 8 This is a schematic diagram of another reference signal transmission device in an embodiment of the present invention. Detailed Implementation

[0045] As mentioned in the background section above, there is no corresponding solution for configuring PRS transmission resources and measuring PRS.

[0046] In this embodiment of the invention, direct link control information is received, which indicates configuration information for the positioning reference signal. This configuration information includes transmission resources for the positioning reference signal. When the transmission resources of the direct link control information and the frequency domain resource set of the positioning reference signal's transmission resources differ, the system switches to the frequency domain resource set of the positioning reference signal's transmission resources and receives the positioning reference signal on those resources. This achieves both the configuration of the positioning reference signal's transmission resources and the measurement of the positioning reference signal.

[0047] To make the above-mentioned objectives, features and beneficial effects of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0048] This invention provides a reference signal transmission method, referring to... Figure 1 The following will provide a detailed explanation through specific steps.

[0049] In this embodiment of the invention, the reference signal transmission method corresponding to steps 101 to 103 below can be executed by a chip with data processing capability in the receiving terminal device (hereinafter referred to as the receiving UE), or by a chip module in the receiving UE that includes the aforementioned chip with data processing capability.

[0050] Step 101: Receive the pass-through link control information.

[0051] In this embodiment of the invention, when a straight-link positioning requirement exists, the sending UE can send Sidelink Control Information (SCI) to the receiving UE. The receiving UE can receive the SCI. At this time, the SCI may carry configuration information for indicating the transmission of the Positioning Reference Signal (PRS).

[0052] It should be noted that, unless otherwise specified, the SCI described in the following embodiments of the present invention carries configuration information for indicating PRS transmission.

[0053] In practical implementation, the configuration information used to indicate PRS transmission may include any one or more of the following parameters: frequency point information, carrier information, time-frequency domain resource information, PRS resource set index, and PRS resource index. The transmission resources of PRS transmission may include the frequency point, carrier, partial bandwidth, and resource pool of PRS transmission.

[0054] Step 102: If the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, perform frequency domain resource set switching.

[0055] In this embodiment of the invention, the sending UE can send an SCI to the receiving UE on the transmission resources used for the direct link data. Correspondingly, the receiving UE can receive the SCI sent by the sending UE on the transmission resources used for the direct link data.

[0056] For ease of description, the transmission resources for direct link data (i.e., the resources for transmitting direct link data) will be referred to as the first transmission resource, and the transmission resources for PRS (i.e., the resources for transmitting PRS) will be referred to as the second transmission resource.

[0057] Therefore, the sending UE can send SCI to the receiving UE on the first transmission resource; the receiving UE can receive the SCI sent by the sending UE on the first transmission resource.

[0058] The receiving UE can determine whether the frequency domain resource set corresponding to the second transmission resource is the same as that corresponding to the first transmission resource. If it is determined that the frequency domain resource set corresponding to the second transmission resource is different from that corresponding to the first transmission resource, the receiving UE can switch to the frequency domain resource set where the second transmission resource is located after receiving the SCI.

[0059] In this embodiment of the invention, the frequency domain resource set may include at least one of the following: frequency point, carrier, partial bandwidth, and resource pool. One frequency point corresponds to one or more carriers, one carrier corresponds to one or more partial bandwidths (BWP), and one partial bandwidth corresponds to one or more resource pools. If any of the frequency point, carrier, partial bandwidth, or resource pool differs between the first transmission resource and the second transmission resource, it can be determined that the frequency domain resource sets of the first transmission resource and the second transmission resource are different.

[0060] In other words, if the frequency point corresponding to the first transmission resource is different from the frequency point corresponding to the second transmission resource, it can be determined that the frequency domain resource sets of the first transmission resource and the second transmission resource are different.

[0061] If the frequency point corresponding to the first transmission resource is the same as the frequency point corresponding to the second transmission resource, but the carrier corresponding to the first transmission resource is different from the carrier corresponding to the second transmission resource, then it can be determined that the frequency domain resource sets of the first transmission resource and the second transmission resource are different.

[0062] If the carrier corresponding to the first transmission resource is the same as the carrier corresponding to the second transmission resource, but the BWP corresponding to the first transmission resource is different from the BWP corresponding to the second transmission resource, then it can be determined that the frequency domain resource sets of the first transmission resource and the second transmission resource are different.

[0063] If the BWP corresponding to the first transmission resource is the same as the BWP corresponding to the second transmission resource, but the resource pool corresponding to the first transmission resource is different from the resource pool corresponding to the second transmission resource, then it can be determined that the frequency domain resource sets of the first transmission resource and the second transmission resource are different.

[0064] Step 103: Receive the positioning reference signal on the transmission resources of the positioning reference signal.

[0065] In practice, after the receiving UE switches to the frequency domain resource set corresponding to the second transmission resource, it can receive PRS on the second transmission resource (that is, the transmission resource of PRS).

[0066] In this embodiment of the invention, after acquiring the second transmission resource, the receiving UE can perform a frequency domain resource set switch, switching from the frequency domain resource set where the first transmission resource is located to the frequency domain resource set where the second transmission resource is located. Specifically, the receiving UE can perform the frequency domain resource set switch within the transmission delay after receiving the direct link control information, so as to switch to the frequency domain resource set where the second transmission resource is located.

[0067] In this embodiment of the invention, the receiving UE can determine the time-domain location of the PRS transmission resources based on the time slot where the direct link control information is located and the transmission delay, and then transmit the PRS. The sending UE can also determine the time-domain location of the PRS transmission resources based on the time slot where the direct link control information is located and the transmission delay, and then receive the PRS.

[0068] In practice, the transmission delay can be carried by the SCI. That is to say, in addition to indicating the configuration information for PRS transmission, the SCI is also used to indicate the value of the transmission delay.

[0069] In this embodiment of the invention, the transmission delay can be directly carried in the SCI. That is, the value of the transmission delay can be directly carried in the SCI.

[0070] Alternatively, network devices can be pre-configured with one or more transmission delay values.

[0071] If only one transmission delay value is configured, the receiving UE can directly use that transmission delay.

[0072] If multiple transmission delay values ​​are pre-configured, indication information can be carried in the SCI. Specifically, a dedicated bit field is set in the SCI, and the value of the dedicated bit field indicates which transmission delay is being indicated.

[0073] For example, a network device is configured with four transmission delays: transmission delay 1, transmission delay 2, transmission delay 3, and transmission delay 4. A dedicated bit field is set in the SCI, with a length of 2 bits. A value of 00 corresponds to transmission delay 1; a value of 01 corresponds to transmission delay 2; a value of 10 corresponds to transmission delay 3; and a value of 11 corresponds to transmission delay 4.

[0074] In this embodiment of the invention, the transmission delay can be characterized by X time units; in other words, the transmission delay is the duration corresponding to X consecutive time units. The time units can be characterized by the number of symbols, the number of time slots, or milliseconds (ms).

[0075] For example, the transmission delay is 5ms. Or, the transmission delay is 20 time slots. It should be noted that the specific values ​​mentioned above are merely illustrative and do not limit the scope of protection of this invention.

[0076] When the transmission delay is represented by X time units, after the receiving UE obtains the SCI, it uses X time units to switch the frequency domain resource set to the frequency domain resource set where the PRS transmission resources are located.

[0077] In this embodiment of the invention, the PRS transmission resource can be the Nth reserved periodic PRS transmission resource after the reference time point. The reference time point can be the time point at which SCI reception is completed. The value of N can be pre-configured or indicated by the SCI.

[0078] Periodic PRS transmission resources can be defined as periodic transmission resources determined by the sending UE within the PRS transmission resource pool through a resource awareness and selection process. The sending UE can also specify the configuration information of the periodic PRS transmission resources in the SCI (Service Control Center). The configuration information of the periodic PRS transmission resources may include the period size, time-frequency domain resource information, etc.

[0079] In other words, the receiving UE uses the time interval between the Nth reserved periodic PRS transmission resource and the completion of SCI reception to switch the frequency domain resource set.

[0080] In summary, in this embodiment of the invention, direct link control information is received, which indicates configuration information for the positioning reference signal. This configuration information includes transmission resources for the positioning reference signal. When the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, the system switches to the frequency domain resource set where the transmission resources of the positioning reference signal are located, and receives the positioning reference signal on those transmission resources. This achieves both the configuration of the transmission resources for the positioning reference signal and the measurement of the positioning reference signal.

[0081] This invention also provides another reference signal transmission method, referring to... Figure 2 The following will provide a detailed explanation through specific steps.

[0082] In this embodiment of the invention, the reference signal transmission method corresponding to steps 201 to 202 below can be executed by a chip with data processing capability in the transmitting terminal device (hereinafter referred to as the transmitting UE), or by a chip module in the transmitting UE that includes the aforementioned chip with data processing capability.

[0083] Step 201: Send pass-through link control information.

[0084] In this embodiment of the invention, when a direct link positioning requirement exists, the sending UE can send an SCI to the receiving UE. The receiving UE can receive the SCI. At this time, the SCI may carry configuration information for instructing PRS transmission.

[0085] It should be noted that, unless otherwise specified, the SCI described in the following embodiments of the present invention carries configuration information for indicating PRS transmission.

[0086] In practical implementation, the configuration information used to indicate PRS transmission may include any one or more of the following parameters: frequency point information, carrier information, time-frequency domain resource information, PRS resource set index, and PRS resource index. The transmission resources for RRS transmission may include the frequency point, carrier, partial bandwidth, and resource pool of the RRS transmission.

[0087] In this embodiment of the invention, the sending UE can send an SCI to the receiving UE on the transmission resources used for the direct link data. Correspondingly, the receiving UE can receive the SCI sent by the sending UE on the transmission resources used for the direct link data.

[0088] For ease of description, the transmission resources for direct link data (i.e., the resources for transmitting direct link data) will be referred to as the first transmission resource, and the transmission resources for PRS (i.e., the resources for transmitting PRS) will be referred to as the second transmission resource.

[0089] Therefore, the sending UE can send SCI to the receiving UE on the first transmission resource; the receiving UE can receive the SCI sent by the sending UE on the first transmission resource.

[0090] Step 202: If the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, perform frequency domain resource set switching.

[0091] In this embodiment of the invention, if the first transmission resource and the second transmission resource are located in different frequency domain resource sets, the transmitting UE can perform frequency domain resource set switching.

[0092] In this embodiment of the invention, after acquiring the second transmission resource, the receiving UE can perform a frequency domain resource set switch, switching from the frequency domain resource set where the first transmission resource is located to the frequency domain resource set where the second transmission resource is located. Specifically, the receiving UE can perform the frequency domain resource set switch within the transmission delay after receiving the direct link control information, so as to switch to the frequency domain resource set where the second transmission resource is located.

[0093] Step 203: Send the positioning reference signal on the transmission resources of the positioning reference signal.

[0094] In practice, the sending UE can send PRS on the second transmission resource.

[0095] In this embodiment of the invention, the transmitting UE can transmit the PRS after the transmission delay following the transmission of the SCI. During the transmission delay after transmitting the SCI, the transmitting UE can perform frequency domain resource set switching.

[0096] The specific configuration method of transmission delay, that is, the specific presentation method of transmission delay, can be referred to the description in the above embodiments, and will not be repeated here.

[0097] In this embodiment of the invention, the PRS transmission resource can be the Nth reserved periodic PRS transmission resource after the reference time point. The reference time point can be the time point at which the SCI transmission is completed. The value of N can be pre-configured or indicated by the SCI.

[0098] Periodic PRS transmission resources can be defined as periodic transmission resources determined by the sending UE within the PRS transmission resource pool through a resource awareness and selection process. The sending UE can also specify the configuration information of the periodic PRS transmission resources in the SCI (Service Control Center). The configuration information of the periodic PRS transmission resources may include the period size, time-frequency domain resource information, etc.

[0099] In other words, after sending the SCI, the sending UE sends the PRS on the Nth reserved periodic PRS transmission resource.

[0100] As can be seen, the configuration information for the positioning reference signal is indicated in the direct link control information, and the positioning reference signal is transmitted on the transmission resources of the positioning reference signal. This enables the configuration of the transmission resources for the positioning reference signal and the measurement of the positioning reference signal.

[0101] This invention also provides another reference signal transmission method, referring to... Figure 3 The following will provide a detailed explanation through specific steps.

[0102] In this embodiment of the invention, the reference signal transmission method corresponding to steps 301 to 302 below can be executed by a chip with data processing capability in the receiving terminal device (hereinafter referred to as the receiving UE), or by a chip module in the receiving UE that includes the aforementioned chip with data processing capability.

[0103] Step 301: Receive configuration information for the positioning reference signal.

[0104] In practice, the transmitting UE can send PRS configuration information via unicast, multicast, or broadcast. The PRS configuration information, which indicates the configuration of PRS transmission, can include one or more parameters such as frequency point information, carrier information, time-frequency domain resource information, PRS resource set index, and PRS resource index. The PRS configuration information may also include the PRS transmission period.

[0105] Step 302: Send a request message.

[0106] In practical implementation, after receiving the PRS configuration information, the receiving UE can send a request message to the sending UE. This request message can be used to instruct the sending UE to perform a PRS measurement. Upon receiving the request message, the sending UE can then send the PRS to the receiving UE.

[0107] In this embodiment of the invention, after receiving the configuration information of the PRS, the receiving UE can send a Physical Sidelink Feedback Channel (PSFCH) to the sending UE. The PSFCH can be the PSFCH associated with the time slot where the configuration information of the received PRS is located.

[0108] The PSFCH can carry request messages. By sending the PSFCH to the sending UE, the request message is sent to the sending UE.

[0109] In practical implementation, an indicator bit can be set in the PSFCH. The value of this indicator bit indicates whether a request message has been sent. The length of the indicator bit can be 1 bit, or 2 or more bits.

[0110] In one embodiment of the present invention, the length of the indicator bit is 1 bit. When the receiving UE determines that a PRS measurement is needed, that is, when the receiving UE sends a PSFCH to the sending UE, the indicator bit in the PSFCH is set to 1. At this time, the request message is: a PSFCH with the indicator bit set to 1.

[0111] After receiving the PSFCH, the sending UE determines that the indicator bit is 1, which means it will send the PRS to the receiving UE.

[0112] It is understandable that request messages can also be other types of messages, independent of PSFCH, that is, they do not necessarily need to be carried by PSFCH.

[0113] In practice, if the frequency points corresponding to the transmission resources of the PRS are different from those corresponding to the transmission resources of the direct link data, or if the carriers corresponding to the transmission resources of the PRS and the direct link data are different, the receiving UE can determine the measurement timing based on the PRS configuration information. During the measurement timing when performing PRS measurements, the receiving UE does not receive direct link data.

[0114] In addition, when reserving resources for PRS measurement according to the measurement timing, the receiving UE needs to avoid the reserved resources overlapping with resources for other purposes (i.e., resources unrelated to PRS measurement).

[0115] In summary, the above scheme can be used to configure PRS transmission resources and measure PRS, thereby enabling the location of the direct link.

[0116] Reference Figure 4 This paper presents another reference signal transmission method in an embodiment of the present invention, which will be described in detail below through specific steps.

[0117] In this embodiment of the invention, the reference signal transmission method corresponding to steps 401 to 402 below can be executed by a chip with data processing capability in the transmitting terminal device (hereinafter referred to as the transmitting UE), or by a chip module in the transmitting UE that includes the aforementioned chip with data processing capability.

[0118] Step 401: Send configuration information for the positioning reference signal.

[0119] In practice, the transmitting UE can send PRS configuration information via unicast or multicast. The PRS configuration information, which indicates the configuration of PRS transmission, can include one or more parameters such as the frequency point information, carrier information, time-frequency domain resource information, PRS resource set index, and PRS resource index used for PRS transmission. The PRS configuration information may also include the PRS transmission period.

[0120] Step 402: Receive request message.

[0121] In practical implementation, after receiving the PRS configuration information, the receiving UE can send a request message to the sending UE. This request message can be used to instruct the sending UE to perform a PRS measurement. Upon receiving the request message, the sending UE can then send the PRS to the receiving UE.

[0122] In this embodiment of the invention, after receiving the configuration information of the PRS, the receiving UE can send a Physical Sidelink Feedback Channel (PSFCH) to the sending UE. The PSFCH can be the PSFCH associated with the time slot where the receiving UE receives the configuration information of the PRS.

[0123] The PSFCH can carry request messages. By sending the PSFCH to the sending UE, the request message is sent to the sending UE.

[0124] In practical implementation, an indicator bit can be set in the PSFCH. The value of this indicator bit indicates whether a request message has been sent. The length of the indicator bit can be 1 bit, or 2 or more bits.

[0125] In one embodiment of the present invention, the length of the indicator bit is 1 bit. When the receiving UE determines that a PRS measurement is needed, that is, when the receiving UE sends a PSFCH to the sending UE, the indicator bit in the PSFCH is set to 1. At this time, the request message is: a PSFCH with the indicator bit set to 1.

[0126] After receiving the PSFCH, the sending UE determines that the indicator bit is 1, which means it will send the PRS to the receiving UE.

[0127] It is understandable that request messages can also be other types of messages, independent of PSFCH, that is, they do not necessarily need to be carried by PSFCH.

[0128] In summary, the above scheme can be used to configure PRS transmission resources and measure PRS, thereby enabling the location of the direct link.

[0129] Reference Figure 5 The present invention provides a reference signal transmission device 50 according to an embodiment of the invention, comprising: a first receiving unit 501, a first execution unit 502, and a second receiving unit 503, wherein:

[0130] The first receiving unit 501 is used to receive direct link control information; the direct link control information is used to indicate the configuration information of the positioning reference signal, and the configuration information includes the transmission resources of the positioning reference signal;

[0131] The first execution unit 502 is configured to perform frequency domain resource set switching when the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, and switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located.

[0132] The second receiving unit 503 is used to receive the positioning reference signal on the transmission resources of the positioning reference signal.

[0133] In specific implementation, the specific execution processes of the first receiving unit 501, the first execution unit 502 and the second receiving unit 503 can be referred to steps 101 to 103, which will not be elaborated here.

[0134] In specific implementations, the aforementioned reference signal transmission device 50 may correspond to a chip with data processing function in a terminal device; or to a chip module in a terminal device that includes a chip with data processing function; or to a terminal device itself.

[0135] Reference Figure 6Another reference signal receiving device 60 according to an embodiment of the present invention is provided, comprising: a first transmitting unit 601, a second execution unit 602, and a second transmitting unit 603, wherein:

[0136] The first transmitting unit 601 is used to transmit direct link control information; the direct link control information is used to indicate the configuration information of the positioning reference signal, and the configuration information includes the transmission resources of the positioning reference signal;

[0137] The second execution unit 602 is used to perform frequency domain resource set switching when the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, and switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located.

[0138] The third transmitting unit is used to transmit the positioning reference signal on the transmission resources of the positioning reference signal.

[0139] In specific implementation, the specific execution processes of the first sending unit 601, the second execution unit, and the second sending unit 603 can be referred to steps 201 to 203, which will not be elaborated here.

[0140] In specific implementations, the aforementioned reference signal transmission device 60 may correspond to a chip with data processing function in a terminal device; or to a chip module in a terminal device that includes a chip with data processing function; or to a terminal device itself.

[0141] Reference Figure 7 The present invention provides another reference signal receiving device 70 according to an embodiment of the invention, comprising: a third receiving unit 701 and a fourth transmitting unit 702, wherein:

[0142] The third receiving unit 701 is used to receive configuration information of the positioning reference signal;

[0143] The fourth sending unit 702 is used to send a request message, which is used to indicate a request to perform a positioning reference signal measurement.

[0144] In specific implementation, the specific execution process of the third receiving unit 701 and the fourth sending unit 702 can be referred to steps 301 to 302, which will not be elaborated here.

[0145] In specific implementations, the aforementioned reference signal transmission device 70 may correspond to a chip with data processing function in a terminal device; or to a chip module in a terminal device that includes a chip with data processing function; or to a terminal device itself.

[0146] Reference Figure 8The present invention provides another reference signal transmission apparatus 80 according to an embodiment of the invention, comprising: a fifth transmitting unit 801 and a fourth receiving unit 802, wherein:

[0147] The fifth transmitting unit 801 is used to transmit configuration information for the positioning reference signal;

[0148] The fourth receiving unit 802 is used to receive a request message, which is used to indicate a request to perform a positioning reference signal measurement.

[0149] In specific implementation, the specific execution process of the fifth transmitting unit 801 and the fourth receiving unit 802 can be referred to steps 401 to 402, which will not be elaborated here.

[0150] In specific implementations, the aforementioned reference signal transmission device 80 may correspond to a chip with data processing function in a terminal device; or to a chip module in a terminal device that includes a chip with data processing function; or to a terminal device itself.

[0151] In specific implementation, the modules / units included in the various devices and products described in the above embodiments can be software modules / units, hardware modules / units, or a combination of both.

[0152] For example, for various devices and products applied to or integrated into a chip, each module / unit can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on a processor integrated within the chip, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits; for various devices and products applied to or integrated into a chip module, each module / unit can be implemented using hardware methods such as circuits, and different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units can be implemented using hardware methods such as circuits. The components can be implemented using software programs that run on the processor integrated within the chip module. The remaining (if any) modules / units can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into the terminal, each of its components / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or in different components within the terminal. Alternatively, at least some modules / units can be implemented using software programs that run on the processor integrated within the terminal, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits.

[0153] This invention also provides a computer-readable storage medium, which is a non-volatile or non-transient storage medium, storing a computer program thereon. When the computer program is run by a processor, it executes the steps of the reference signal transmission method provided in steps 101 to 103, or the steps of the reference signal transmission method provided in steps 201 to 203, or the steps of the reference signal transmission method provided in steps 301 to 302, or the steps of the reference signal transmission method provided in steps 401 to 402.

[0154] This invention also provides a reference signal transmission device, including a memory and a processor. The memory stores a computer program that can run on the processor. When the processor runs the computer program, it executes the steps of the reference signal transmission method provided in steps 101 to 103, or executes the steps of the reference signal transmission method provided in steps 201 to 203, or executes the steps of the reference signal transmission method provided in steps 301 to 302, or executes the steps of the reference signal transmission method provided in steps 401 to 402.

[0155] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by a program instructing related hardware. The program can be stored in a computer-readable storage medium, which may include ROM, RAM, disk, or optical disk, etc.

[0156] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A reference signal transmission method, characterized in that, include: Receive pass-through link control information; The direct link control information is used to indicate the configuration information of the positioning reference signal, and the configuration information includes the transmission resources of the positioning reference signal; If the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, a frequency domain resource set switching is performed to switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located. The execution of frequency domain resource set switching includes: performing frequency domain resource set switching within the transmission delay after receiving the direct link control information; The positioning reference signal is received on the transmission resources of the positioning reference signal.

2. The reference signal transmission method as described in claim 1, characterized in that, Also includes: The temporal location of the transmission resources of the positioning reference signal is determined based on the time slot where the direct link control information is located and the transmission delay.

3. The reference signal transmission method as described in claim 1, characterized in that, The transmission delay is pre-configured; or, the transmission delay is indicated by the pass-through link control information.

4. The reference signal transmission method as described in claim 1, characterized in that, The transmission delay consists of X time units.

5. The reference signal transmission method as described in claim 1, characterized in that, The transmission resource for the positioning reference signal is the Nth reserved periodic reference positioning signal transmission resource after receiving the direct link control information.

6. The reference signal transmission method as described in claim 5, characterized in that, The value of N is pre-configured; or, the value of N is indicated by the pass-through link control information.

7. The reference signal transmission method according to any one of claims 1 to 6, characterized in that, The frequency domain resource set includes at least one of the following: carrier, resource pool, and partial bandwidth.

8. A reference signal transmission method, characterized in that, include: Send pass-through link control information; The direct link control information is used to indicate the configuration information of the positioning reference signal, and the configuration information includes the transmission resources of the positioning reference signal; If the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, a frequency domain resource set switching is performed to switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located. The execution of frequency domain resource set switching includes: performing frequency domain resource set switching within the transmission delay after sending the direct link control information; The positioning reference signal is transmitted on the transmission resources of the positioning reference signal.

9. The reference signal transmission method as described in claim 8, characterized in that, The step of transmitting the positioning reference signal on the transmission resources of the positioning reference signal includes: Based on the time slot and transmission delay of the direct link control information, the time domain location of the transmission resources of the positioning reference signal is determined.

10. The reference signal transmission method as described in claim 8, characterized in that, The transmission delay is pre-configured; or, it is indicated by the pass-through link control information.

11. The reference signal transmission method as described in claim 8, characterized in that, The transmission delay consists of X time units.

12. The reference signal transmission method as described in claim 8, characterized in that, The transmission resource for the positioning reference signal is the Nth reserved periodic reference positioning signal transmission resource after the direct link control information is sent.

13. The reference signal transmission method as described in claim 12, characterized in that, The value of N is pre-configured; or, the value of N is indicated by the pass-through link control information.

14. The reference signal transmission method according to any one of claims 8 to 13, characterized in that, The frequency domain resource set includes at least one of the following: carrier, resource pool, and partial bandwidth.

15. A reference signal transmission device, characterized in that, include: The first receiving unit is used to receive direct link control information; The direct link control information is used to indicate the configuration information of the positioning reference signal, and the configuration information includes the transmission resources of the positioning reference signal; The first execution unit is configured to perform frequency domain resource set switching when the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, and switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located. The execution of frequency domain resource set switching includes: performing frequency domain resource set switching within the transmission delay after receiving the direct link control information; The second receiving unit is used to receive the positioning reference signal on the transmission resources of the positioning reference signal.

16. A reference signal transmission device, characterized in that, include: The first transmitting unit is used to transmit direct link control information; The direct link control information is used to indicate the configuration information of the positioning reference signal, and the configuration information includes the transmission resources of the positioning reference signal; The second execution unit is configured to perform frequency domain resource set switching when the transmission resources of the direct link control information and the transmission resources of the positioning reference signal are located in different frequency domain resource sets, and switch to the frequency domain resource set where the transmission resources of the positioning reference signal are located. The execution of frequency domain resource set switching includes: performing frequency domain resource set switching within the transmission delay after sending the direct link control information; The third transmitting unit is used to transmit the positioning reference signal on the transmission resources of the positioning reference signal.

17. A computer-readable storage medium, wherein the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored thereon, characterized in that, The computer program, when executed by a processor, performs the steps of the reference signal transmission method according to any one of claims 1 to 14.

18. A reference signal transmission device, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, characterized in that, When the processor runs the computer program, it performs the steps of the reference signal transmission method according to any one of claims 1 to 7; Alternatively, perform the steps of the reference signal transmission method according to any one of claims 8 to 14.

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