Communication method and communication device

Abstract

The invention provides a communication method and a communication device, which can be applied to a sidewalk communication system. In the method, indication information is sent on a time domain unit to indicate a resource of a control channel and a resource of a reference signal, the resource of the control channel comprises a resource for transmitting the control channel on a reserved time domain unit after the time domain unit, and the resource of the reference signal is transmitted on the reserved time domain unit after the time domain unit. The resource of the reference signal comprises a resource used by the time domain unit and / or a reserved time domain unit after the time domain unit to transmit the reference signal. Thus, even if there is no fixed mapping relationship between the resource of the control channel and the resource of the reference signal, flexible indication of the resource can be realized through the above mode.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on July 4, 2023, with application number 202310817216.6 and application name “A method and device for recovering continuous failure of listening before speaking”. All the above contents are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of communications, and more specifically, to a communication method and a communication device. Background Art

[0003] In a wireless communication system, communication devices can implement corresponding functions by transmitting reference signals. For example, communication devices can implement positioning functions by transmitting positioning reference signals. For another example, communication devices can implement beam management or beam prediction functions by transmitting beam management reference signals. For another example, communication devices can implement channel estimation functions by transmitting channel state information-reference signals. Usually, reference signals are scheduled by control channels. There may or may not be a fixed mapping relationship between the resources of the control channel and the resources of the reference signal scheduled by the control channel. Then, how to implement the indication of the resources of the control channel and the resources of the reference signal scheduled by the control channel is a problem worth considering. Summary of the invention

[0004] The present application provides a communication method and a communication device, which can realize flexible indication of resources of reference signals (such as sidelink reference signals) and control channels.

[0005] In a first aspect, a communication method is provided, which can be performed by a communication device. The communication device can be a communication device (such as a terminal device), or a component of a communication device (such as a chip or a circuit), which is not limited.

[0006] The method may include: determining a first resource and a second resource, the first resource being used to transmit a control channel, and the second resource being used to transmit a reference signal scheduled by the control channel; sending indication information on a first time domain unit, the indication information indicating the first resource and the second resource, the first resource including a resource on a second time domain unit for transmitting the control channel, the second resource including a resource on the first time domain unit for transmitting the reference signal scheduled by the control channel transmitted on the first time domain unit, and / or a resource on the second time domain unit for transmitting the reference signal scheduled by the control channel, wherein the second time domain unit is located after the first time domain unit.

[0007] Based on the above technical solution, the communication device can send indication information on a certain time domain unit (such as the first time domain unit), indicating the resources used to transmit the control channel on the time domain unit after the time domain unit (such as the second time domain unit, or the reserved time domain unit), and can also indicate the resources used to transmit the reference signal on the first time domain unit and / or the second time domain unit after the first time domain unit. In this way, flexible indication of the resources of the reference signal and the control channel can be achieved, and it is suitable for different scenarios. For example, if there is no fixed mapping relationship between the resources of the control channel and the resources of the reference signal, the above technical solution can also be used to achieve the indication of the resources of the control channel and the reference signal.

[0008] In some implementations, the first communications device sends the control channel on the first resource and the first time domain unit, and sends a reference signal scheduled by the control channel on the second resource.

[0009] In some implementations, the method further includes: sending at least one of the following on the first time domain unit: a physical sidelink shared channel PSSCH and an automatic gain control AGC.

[0010] In some implementations, the time domain resources occupied by the AGC in the first time domain unit are located before the time domain resources occupied by the control channel in the first time domain unit, the time domain resources occupied by the PSSCH in the first time domain unit, and the time domain resources occupied by the reference signal in the first time domain unit.

[0011] In a second aspect, a communication method is provided, which can be performed by a communication device. The communication device can be a communication device (such as a terminal device), or a component of a communication device (such as a chip or a circuit), which is not limited.

[0012] The method may include: receiving indication information on a first time domain unit, the indication information indicating a first resource and a second resource, the first resource including a resource on a second time domain unit for transmitting a control channel, the second resource including a resource on the first time domain unit for transmitting a reference signal scheduled by the control channel transmitted on the first time domain unit, and / or a resource on the second time domain unit for transmitting a reference signal scheduled by the control channel, wherein the second time domain unit is located after the first time domain unit; receiving the reference signal scheduled by the control channel on the second resource.

[0013] Based on the above technical solution, the communication device can receive indication information on a certain time domain unit (such as the first time domain unit), indicating the resources used to transmit the control channel on the time domain unit after the time domain unit (such as the second time domain unit, or the reserved time domain unit), and can also indicate the resources used to transmit the reference signal on the first time domain unit and / or the second time domain unit after the first time domain unit. In this way, the communication device can receive the reference signal according to the resources indicated by the indication information.

[0014] In certain implementations, the method further includes: receiving a control channel on a first resource; or, when determining candidate resources, excluding resources occupied by a control channel received on the first resource, and / or excluding resources on a second time domain unit used to transmit a reference signal for scheduling a control channel.

[0015] In some implementations, at least one of the following is received in the first time domain unit: a physical sidelink shared channel PSSCH and an automatic gain control AGC.

[0016] In some implementations, the time domain resources occupied by the AGC in the first time domain unit are located before the time domain resources occupied by the control channel in the first time domain unit, the time domain resources occupied by the PSSCH in the first time domain unit, and the time domain resources occupied by the reference signal in the first time domain unit.

[0017] In some implementations, the resources on the second time domain unit used to transmit the reference signal scheduled by the control channel include: resources on the second time domain unit used to transmit the reference signal scheduled by the control channel transmitted on the second time domain unit.

[0018] Based on the above technical solution, the reference signal on the second time domain unit can be a reference signal scheduled by the control channel on the second time domain unit. In this way, it is possible to flexibly adjust or select the resources used to transmit the reference signal on the time domain unit according to the actual communication situation, and notify the opposite side according to the control channel on the time domain unit.

[0019] In some implementations, the indication information is carried in any one of the following: control signaling on the control channel, a media access control-control element MAC-CE, or a radio resource control RRC.

[0020] In some implementations, the indication information includes a first field and a second field, the first field indicates the first resource, and the second field indicates the second resource.

[0021] Based on the above technical solution, the first resource and the second resource may be indicated respectively by two signalings (or two fields). As an example, the solution may be applicable to a scenario where there may not be a fixed mapping relationship between the first resource and the second resource, or there is no one-to-one mapping relationship.

[0022] In some implementations, the identifier of the second resource is determined by at least one of the following parameters: the time domain resource identifier of the second resource on the first time domain unit; the time domain resource identifier of the second resource on the second time domain unit; the resource quantity of the second resource on the first time domain unit.

[0023] In some implementations, the second field indicates an identifier of the second resource, and the identifier of the second resource satisfies:

[0024]

[0025] Wherein, W1 represents the identifier of the second resource, N ID represents the number of the second resource in the time domain unit, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,i Represents the resource identifier for transmitting the reference signal in the (i-1)th second time domain unit, where i is an integer greater than 2 or equal to 2.

[0026] In some implementations, the identifier of the first resource is determined by at least one of the following parameters: a frequency domain starting position of the first resource on the second time domain unit; and a frequency domain resource quantity of the first resource in the time domain.

[0027] In some implementations, the first field indicates an identifier of the first resource, and the identifier of the first resource satisfies:

[0028]

[0029] Wherein, W2 represents the identifier of the first resource, represents the frequency domain starting position of the first resource on the first of the second time domain units, represents the frequency domain starting position of the first resource in the zth second time domain unit, N subCH represents the number of frequency domain resources of the first resource in the time domain, and z is an integer greater than or equal to 2.

[0030] In some implementations, the indication information includes a third field, and the third field indicates the first resource and the second resource.

[0031] Based on the above technical solution, the first resource and the second resource may be jointly indicated by a signaling (or a field). As an example, the solution 2 may be applicable to a scenario where there may not be a fixed mapping relationship between the first resource and the second resource, or there is no one-to-one mapping relationship.

[0032] In some implementations, the third field is obtained by jointly encoding an identifier of the first resource and an identifier of the second resource.

[0033] In certain implementations, the jointly encoded resource indication value is determined by at least one of the following parameters: a time domain resource identifier of the second resource in the first time domain unit; a time domain resource identifier of the second resource in the second time domain unit; the resource quantity of the second resource in the first time domain unit; the frequency domain starting position of the first resource in the second time domain unit; the frequency domain resource quantity of the first resource in the time domain; a mapping relationship between the first resource and the second resource, wherein there is at least one mapping relationship between the first resource and the second resource.

[0034] In some implementations, the jointly encoded resource indication value satisfies any one of the following:

[0035] W3=n ID,1 ;

[0036]

[0037]

[0038] or,

[0039]

[0040] Wherein, W3 represents the resource indication value after the joint coding, represents the frequency domain starting position of the first resource on the first of the second time domain units, Indicates the starting position of the second time domain unit in the frequency domain, N subCH represents the number of frequency domain resources of the first resource in the time domain, N ID represents the number of the second resource in the time domain unit, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Represents a resource identifier for transmitting the reference signal on the second second time domain unit.

[0041] In some implementations, when the mapping relationship between the first resource and the second resource is one-to-one, n ID,1 =0;n ID,2 =0; N ID =1.

[0042] In some implementations, the first resource and the second resource have a mapping relationship; the indication information indicates the first resource and the second resource, including any one of the following: the indication information indicates the mapping relationship, and the mapping relationship is used to determine the first resource and the second resource; or, the indication information indicates the mapping relationship and the first resource, and the mapping relationship and the first resource are used to determine the second resource; or, the indication information indicates the mapping relationship and the second resource, and the mapping relationship and the second resource are used to determine the first resource.

[0043] In some implementations, the first resource and the second resource have K groups of mapping relationships, the position of the first resource in each group of mapping relationships is the same, the position of the second resource is different, and K is an integer greater than 1; the indication information indicates the first resource and the second resource, including: the indication information indicates the group where the first resource is located and the second resource, and the group where the first resource is located and the second resource are used to determine the first resource; or, the indication information indicates the first resource and the group where the second resource is located, and the group where the second resource is located and the first resource are used to determine the second resource.

[0044] Based on the above technical solution, considering that there may be a one-to-many mapping relationship between the first resource and the second resource, the first resource and the second resource can be indicated by indicating the mapping relationship, thereby saving signaling overhead.

[0045] In some implementations, the identifier of the second resource satisfies any one of the following:

[0046] W1=n ID,1

[0047] W1=n ID,1 +n ID,2 *N

[0048] W1=n ID,1 +n ID,2 *N+n ID,3 *N*N ID

[0049] Wherein, W1 represents the identifier of the second resource, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Indicates the resource identifier for transmitting the reference signal on the second second time domain unit, N ID Represents the number of resources of the second resource in the time domain unit.

[0050] In some implementations, the identifier of the second resource satisfies any one of the following:

[0051] W1=n ID,1

[0052] W1=n ID,1 +n ID,2 *N

[0053] W1=n ID,1 +n ID,2 *N+n ID,3 *N 2

[0054] Wherein, W1 represents the identifier of the second resource, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Represents a resource identifier for transmitting the reference signal on the second second time domain unit.

[0055] In some implementations, the control channel is a sidelink control channel, and the reference signal is a sidelink positioning reference signal.

[0056] In some implementations, the first time domain unit includes time domain resources for transmitting the control channel and time domain resources for transmitting a reference signal scheduled by the control channel.

[0057] In some implementations, the time domain resources occupied by the control channel are located before the time domain resources occupied by the reference signal.

[0058] In some implementations, the method also includes: obtaining configuration information, where the configuration information is used to indicate at least one of the following: the number of resources occupied by the control channel, the number of resources occupied by the reference signal, the mapping relationship between the first resource and the second resource, the number of mapping relationships between the first resource and the second resource, the identifier of the first resource, the starting position of the first resource in the time domain, the length of the first resource in the time domain, the ending position of the first resource in the time domain, the offset of the first resource in the frequency domain, the comb tooth size of the first resource in the frequency domain, the identifier of the second resource, the starting position of the second resource in the time domain, the length of the second resource in the time domain, the ending position of the second resource in the time domain, the offset of the second resource in the frequency domain, the comb tooth size of the second resource in the frequency domain, and the maximum number of reservations.

[0059] In some implementations, the first time domain unit is the time domain unit where the initial transmission resource of the control channel is located, and the first resource is the retransmission resource of the control channel; or, the first time domain unit is the time domain unit where the retransmission resource of the control channel is located, and the first resource is the retransmission resource of the control channel.

[0060] According to a third aspect, a communication device is provided, which includes a transceiver unit and a processing unit, wherein the processing unit is used to: determine a first resource and a second resource, wherein the first resource is used to transmit a control channel, and the second resource is used to transmit a reference signal scheduled by the control channel; the transceiver unit is used to: send indication information on a first time domain unit, wherein the indication information indicates the first resource and the second resource, wherein the first resource includes a resource on a second time domain unit for transmitting the control channel, and the second resource includes a resource on the first time domain unit for transmitting the reference signal scheduled by the control channel transmitted on the first time domain unit, and / or a resource on the second time domain unit for transmitting the reference signal scheduled by the control channel, wherein the second time domain unit is located after the first time domain unit.

[0061] In some implementations, the transceiver unit is further configured to: send at least one of the following items on the first time domain unit: a physical sidelink shared channel PSSCH and an automatic gain control AGC.

[0062] In some implementations, the time domain resources occupied by the AGC in the first time domain unit are located before the time domain resources occupied by the control channel in the first time domain unit, the time domain resources occupied by the PSSCH in the first time domain unit, and the time domain resources occupied by the reference signal in the first time domain unit.

[0063] In some implementations, the apparatus is a communication device (such as a terminal device). When the apparatus is a communication device, the transceiver unit may be a transceiver, or an input / output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0064] In some implementations, the device is a chip, a chip system, or a circuit for a communication device (such as a terminal device). When the device is a chip, a chip system, or a circuit for a communication device, the transceiver unit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin, or a related circuit on the chip, the chip system, or the circuit; the processing unit may be at least one processor, a processing circuit, or a logic circuit.

[0065] In a fourth aspect, a communication device is provided, which includes a transceiver unit, and the transceiver unit is used to: receive indication information on a first time domain unit, the indication information indicating a first resource and a second resource, the first resource including a resource on the second time domain unit for transmitting a control channel, the second resource including a resource on the first time domain unit for transmitting a reference signal scheduled by the control channel transmitted on the first time domain unit, and / or a resource on the second time domain unit for transmitting the reference signal scheduled by the control channel, wherein the second time domain unit is located after the first time domain unit; the transceiver unit is also used to: receive the control channel on the first resource, and receive the reference signal scheduled by the control channel on the second resource.

[0066] In certain implementations, the transceiver unit is further configured to: receive at least one of the following items on the first time domain unit: a physical sidelink shared channel PSSCH and an automatic gain control AGC.

[0067] In some implementations, the time domain resources occupied by the AGC in the first time domain unit are located before the time domain resources occupied by the control channel in the first time domain unit, the time domain resources occupied by the PSSCH in the first time domain unit, and the time domain resources occupied by the reference signal in the first time domain unit.

[0068] In some implementations, the apparatus is a communication device (such as a terminal device). When the apparatus is a communication device, the transceiver unit may be a transceiver, or an input / output interface. Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0069] In some implementations, the device is a chip, a chip system, or a circuit for a communication device (such as a terminal device). When the device is a chip, a chip system, or a circuit for a communication device, the transceiver unit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin, or a related circuit on the chip, the chip system, or the circuit.

[0070] It should be understood that the third aspect and the fourth aspect are the device-side implementation methods corresponding to the first aspect and the second aspect respectively. The explanations, supplements and descriptions of the beneficial effects of the first aspect and the second aspect are also applicable to the third aspect and the fourth aspect and will not be repeated here.

[0071] In a fifth aspect, a communication device is provided, comprising: at least one processor, configured to execute a computer program or instruction stored in a memory to execute a method in any possible implementation of the first aspect or the second aspect.

[0072] Optionally, the apparatus further comprises a memory for storing computer programs or instructions.

[0073] Optionally, the device further comprises a communication interface, and the processor reads the computer program or instructions stored in the memory through the communication interface.

[0074] In one implementation, the apparatus is a communication device (such as a terminal device).

[0075] In another implementation, the apparatus is a chip, a chip system or a circuit for a communication device (such as a terminal device).

[0076] In a sixth aspect, the present application provides a processor for executing the method provided in the first aspect or the second aspect above.

[0077] For the operations such as sending and acquiring / receiving involved in the processor, unless otherwise specified, or unless they conflict with their actual function or internal logic in the relevant description, they can be understood as operations such as processor output, reception, input, etc., or as sending and receiving operations performed by the radio frequency circuit and antenna, and this application does not limit this.

[0078] In a seventh aspect, a computer-readable storage medium is provided, which stores a program code for execution by a device, wherein the program code includes a method for executing any possible implementation of the first aspect or the second aspect.

[0079] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute a method in any possible implementation of the first aspect or the second aspect.

[0080] In a ninth aspect, a communication system is provided, comprising at least one first communication device as described in the third aspect and / or at least one communication device as described in the fourth aspect. The communication system may be used to implement the method provided in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] Figure 1 It is a schematic diagram of an application scenario 100 involved in the present application.

[0082] Figure 2 It is a schematic diagram of an application scenario 200 involved in the present application.

[0083] Figure 3 It is a schematic diagram of resources occupied by a downlink positioning reference signal.

[0084] Figure 4 It is a schematic diagram of resources occupied by an uplink positioning reference signal.

[0085] Figure 5 It is a schematic diagram of the time slot structure in which SL-PRS and PSCCH are transmitted together.

[0086] Figure 6 It is a schematic diagram of a method 600 provided in an embodiment of the present application.

[0087] Figure 7 It is a schematic diagram of reference signal and control channel transmission applicable to an embodiment of the present application.

[0088] Figure 8 It is a schematic block diagram of a communication device 800 provided in an embodiment of the present application.

[0089] Fig. 9 It is a schematic block diagram of a communication device 900 provided in an embodiment of the present application.

[0090] Fig.10 It is a schematic block diagram of a chip system 1000 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0091] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0092] The technical solution provided in this application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) or new radio (new radio, NR) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, etc. The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6th generation, 6G) mobile communication system. The technical solution provided in this application can also be applied to device to device (device to device, D2D) communication, vehicle to everything (vehicle-to-everything, V2X) communication, machine to machine (machine to machine, M2M) communication, machine type communication (machine type communication, MTC), and Internet of things (Internet of things, IoT) communication system. The technical solution provided in this application can also be applied to non-terrestrial network (NTN) systems such as intersatellite communication and satellite communication.

[0093] As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with the base station. The satellite can be used as a base station or as a terminal device. Among them, the satellite can refer to a drone, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, a high-orbit satellite, etc. The satellite can also refer to a non-ground base station or non-ground equipment, etc.

[0094] As an example, V2X communication may include: vehicle-to-vehicle (V2V) communication, vehicle-to-roadside infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, and vehicle-to-network (V2N) communication. V2V refers to communication between vehicles. V2P refers to communication between vehicles and people (including pedestrians, cyclists, drivers, or passengers, etc.). V2I refers to communication between vehicles and infrastructure, such as road side units (RSU) or network equipment. Among them, RSU includes two types: terminal type RSU and base station type RSU. Among them, terminal type RSU is in a non-mobile state because it is located on the roadside and does not need to consider mobility; base station type RSU can provide timing synchronization and resource scheduling to vehicles communicating with it. V2N refers to communication between vehicles and network equipment. It can be understood that the above is an exemplary description and the embodiments of the present application are not limiting. For example, V2X may also include V2X communications based on the NR system of the current 3GPP Rel-16 and subsequent versions.

[0095] The technical solution provided in the embodiment of the present application can be applied to the link between the network device and the terminal device, and can also be applied to the link between devices, such as a D2D link. The D2D link can also be called a side link, wherein the side link can also be called a side link or a side link, etc. In the embodiment of the present application, the D2D link, or the side link or the side link all refer to the link established between devices of the same type, and they have the same meaning. The so-called devices of the same type can be a link between terminal devices and terminal devices, or a link between network devices and network devices, or a link between relay nodes and relay nodes, etc., and the embodiment of the present application does not limit this. For the link between terminal devices and terminal devices, there are D2D links defined in the release (Rel)-12 / 13 of the third generation partnership project (3GPP), and there are also vehicle-to-everything links defined by 3GPP for the Internet of Vehicles.

[0096] A device in a communication system may send a signal to another device or receive a signal from another device. The signal may include information, signaling, or data, etc. The device may also be replaced by an entity, a network entity, a communication device, a communication module, a node, a communication node, etc., and the present disclosure takes the device as an example for description.

[0097] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.

[0098] The terminal device may be a device that provides voice / data to the user, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device may include a user equipment, sometimes also referred to as a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user device, etc. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, such as but not limited to the following scenarios: cellular communication, D2D, V2X, machine-to-machine / machine-type communications (machine-to-machine / machine-type communications, M2M / MTC), Internet of Things (IoT), virtual reality (virtual reality, VR), augmented reality (augmented reality, AR), industrial control (industrial control), self driving, remote medical, smart grid (smart grid), smart furniture, smart office, smart wear, smart transportation, smart city (smart city), drones, robots and other scenarios of terminal devices. For example, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a VR terminal, an AR terminal, a wireless terminal in industrial control, a whole vehicle, a wireless communication module in the whole vehicle, a vehicle-mounted T-box (Telematics BOX), a roadside unit RSU, a wireless terminal in unmanned driving, a smart speaker in an IoT network, a wireless terminal device in telemedicine, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc., and the embodiments of the present application are not limited to this.

[0099] As an example but not limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-size, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for measuring vital signs. In addition, in the embodiment of the present application, the terminal device may also be a terminal device in the IoT system. IoT is an important part of the future development of information technology. Its main technical feature is to connect items to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0100] The various terminal devices introduced above, if located on a vehicle (e.g., placed in a vehicle or installed in a vehicle), can all be considered as vehicle-mounted terminal devices, which are also called on-board units (OBU). The terminal device of the present application can also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle can implement the method of the present application through the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit.

[0101] It should be understood that in some scenarios, the UE can also be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in scenarios such as V2X, D2D or P2P.

[0102] In the embodiment of the present application, the device for realizing the function of the terminal device, i.e., the terminal device, can be the terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system or a chip, which can be installed in the terminal device. In the embodiment of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0103] The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be referred to as an access network device or a wireless access network device, such as a base station. The network device in the embodiment of the present application may refer to a wireless access network (RAN) node (or device) that connects a terminal device to a wireless network. Base station can broadly cover various names as follows, or replace with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point, master station, auxiliary station, multi-standard wireless (motor slide retainer, MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. The base station can also refer to a communication module, a modem or a chip for being arranged in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs the base station function in D2D, V2X, and M2M communications, a network-side device in a 6G network, or a device that performs the base station function in a future communication system. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the network device.

[0104] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0105] In some deployments, the network device mentioned in the embodiments of the present application may be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit control plane (central unit-control plane, CU-CP)) and a user plane CU node (central unit user plane (central unit-user plane, CU-UP)) and a DU node.

[0106] In the embodiment of the present application, the device for realizing the function of the network device can be a network device, or a device capable of supporting the network device to realize the function, such as a chip system or a chip, which can be installed in the network device. In the embodiment of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0107] The network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons and satellites in the air. The embodiments of the present application do not limit the scenarios in which the network equipment and terminal equipment are located.

[0108] To facilitate understanding of the embodiments of the present application, first, Figure 1 and Figure 2 Taking the example, the application scenarios to which the embodiments of the present application are applicable are described.

[0109] Figure 1 It is a schematic diagram of an application scenario 100 involved in the present application. As an example, the application scenario 100 is a sidelink (SL) positioning scenario. The sidelink may also be referred to as a side link or a side link, etc. It can be understood that the sidelink represents a connection relationship between terminal devices and terminal devices, which is a logical concept rather than a physical entity. The sidelink is only named for distinction, and its specific naming does not limit the scope of protection of the present application.

[0110] As an example, in Figure 1 The scenario shown may include a terminal device 110, a terminal device 120, and a positioning management device 130. The terminal device 110 may be a terminal device to be positioned, and the terminal device 120 may be another terminal device or a roadside unit. It should be understood that in this positioning scenario, the terminal device 110 and the terminal device 120 may be positioned via a direct communication interface (i.e., PC5 interface).

[0111] In a first possible implementation, the terminal device 110 has at least two antennas, and the terminal device 120 also has at least two antennas. The terminal device 120 sends a reference signal to the terminal device 110 through the at least two antennas, and the terminal device 110 receives the reference signal through the at least two antennas and completes the measurement of the reference signal.

[0112] For example, the terminal device 110 determines the position and / or posture of the terminal device 110 according to the measurement information.

[0113] For another example, the terminal device 110 sends the measured information to the terminal device 120, and the terminal device 120 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0114] For another example, the terminal device 110 sends the measured information to the positioning management device 130, and the positioning management device 130 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0115] In a second possible implementation, the terminal device 110 has at least two antennas, and the terminal device 120 may be composed of at least two terminal devices. The at least two terminal devices included in the terminal device 120 respectively send reference signals to the terminal device 110 on their own antennas, and the terminal device 110 may receive the reference signals on different antennas and complete the measurement of the reference signals.

[0116] For example, the terminal device 110 will determine the position and / or posture of the terminal device 110 according to the measurement information.

[0117] For another example, the terminal device 110 sends the measured information to the terminal device 120, and the terminal device 120 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0118] For another example, the terminal device 110 sends the measured information to the positioning management device 130, and the positioning management device 130 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0119] In a third possible implementation, the terminal device 110 has at least two antennas, and the terminal device 120 also has at least two antennas. The terminal device 110 sends a reference signal to the terminal device 120 through the at least two antennas, and the terminal device 120 receives the reference signal through the at least two antennas and completes the measurement of the reference signal.

[0120] For example, the terminal device 120 will determine the position and / or posture of the terminal device 110 according to the measurement information.

[0121] For another example, the terminal device 120 sends the measured information to the terminal device 110, and the terminal device 110 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0122] For another example, the terminal device 120 sends the measured information to the positioning management device 130, and the positioning management device 130 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0123] In a fourth possible implementation, the terminal device 110 has at least two antennas, and the terminal device 120 may be composed of at least two terminal devices. The terminal device 110 sends a reference signal to the terminal device 120 on at least two antennas, and the at least two terminal devices included in the terminal device 120 receive the reference signal on the same antenna respectively and complete the measurement of the reference signal.

[0124] For example, any one device included in the terminal device 120 or at least two devices included in the terminal device 120 may determine the position and / or posture of the terminal device 110 according to the measurement information.

[0125] For another example, at least two terminal devices of the terminal device 120 may send measured information to the terminal device 110, and the terminal device 110 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0126] For another example, at least two terminal devices of the terminal device 120 may send measured information to the positioning management device 130 , and the positioning management device 130 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0127] In a fifth possible implementation, the terminal device 110 has at least two antennas, and the terminal device 120 has only one antenna. The terminal device 110 sends a reference signal to the terminal device 120 through at least two antennas, and the terminal device 120 receives the reference signal through the same antenna and completes the measurement of the reference signal.

[0128] For example, the terminal device 120 determines the position and / or posture of the terminal device 110 according to the measurement information.

[0129] For another example, the terminal device 120 sends the measured information to the terminal device 110, and the terminal device 110 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0130] For another example, the terminal device 120 sends the measured information to the positioning management device 130, and the positioning management device 130 determines the position and / or posture of the terminal device 110 according to the received measurement information.

[0131] Figure 2 2 is a schematic diagram of an application scenario 200 involved in this application. Figure 2 As shown, the application scenario 200 mainly involves a cellular positioning scenario, and the application scenario 200 may include a terminal device 210, a network device 220, and a positioning management device 230. Among them, the terminal device 210 may be a terminal device to be positioned, and the network device 220 may be used as an anchor device (i.e., the location of the network device 220 is known). In this positioning scenario, the terminal device 210 and the network device 220 may be positioned through a cellular communication interface (i.e., a Uu interface).

[0132] In a possible implementation, the terminal device 210 has at least two antennas, and the network device 220 also has at least two antennas. The network device 220 sends a reference signal to the terminal device 210 on at least two antennas, and the terminal device 210 receives the reference signal on at least two antennas and completes the measurement of the reference signal. The terminal device 210 can send the measured information to the positioning management device 230, and the positioning management device 230 determines the position and / or posture of the terminal device 210 according to the received measurement information. The terminal device 210 can also determine the position and / or posture of the terminal device 210 according to the measured information. The terminal device 210 can also send the measured information to the network device 220, and the network device 220 can determine the position and / or posture of the terminal device 210 according to the received measurement information.

[0133] In a possible implementation, the terminal device 210 has at least two antennas, and the network device 220 may be composed of at least two network devices. The at least two network devices included in the network device 220 respectively send reference signals to the terminal device 210 on their own antennas, and the terminal device 210 may receive the reference signals on different antennas and complete the measurement of the reference signals. The terminal device 210 may send the measured information to the positioning management device 230, and the positioning management device 230 determines the position and / or posture of the terminal device 210 according to the received measurement information. The terminal device 210 may also determine the position and / or posture of the terminal device 210 according to the measured information. The terminal device 210 may also send the measured information to the network device 220, and the network device 220 may determine the position and / or posture of the terminal device 210 according to the received measurement information.

[0134] In a possible implementation, the terminal device 210 has at least two antennas, and the network device 220 also has at least two antennas. The terminal device 210 sends a reference signal to the network device 220 on at least two antennas, and the network device 220 receives the reference signal on at least two antennas and completes the measurement of the reference signal. The network device 220 can send the measured information to the positioning management device 230, and the positioning management device 230 determines the position and / or posture of the terminal device 210 according to the received measurement information. The network device 220 can also determine the position and / or posture of the terminal device 210 according to the measured information. The network device 220 can also send the measured information to the terminal device 210, and the network device 220 can determine the position and / or posture of the terminal device 210 according to the received measurement information.

[0135] In a possible implementation, the terminal device 210 has at least two antennas, and the network device 220 may be composed of at least two network devices. The terminal device 210 sends a reference signal to the network device 220 on at least two antennas, and the at least two network devices included in the network device 220 receive the reference signal on the same antenna and complete the measurement of the reference signal. The network device 220 may send the measured information to the positioning management device 230, and the positioning management device 230 determines the position and / or posture of the terminal device 210 according to the received measurement information. The network device 220 may also determine the position and / or posture of the terminal device 210 according to the measured information. The network device 220 may also send the measured information to the terminal device 210, and the network device 220 may determine the position and / or posture of the terminal device 210 according to the received measurement information.

[0136] In a possible implementation, the terminal device 210 has at least two antennas, and the network device 220 has only one antenna. The terminal device 210 sends a reference signal to the network device 220 on at least two antennas, and the network device 220 receives the reference signal on the same antenna and completes the measurement of the reference signal. The network device 220 can send the measured information to the positioning management device 230, and the positioning management device 230 determines the position and / or posture of the terminal device 210 according to the received measurement information. The network device 220 can also determine the position and / or posture of the terminal device 210 according to the measured information. The network device 220 can also send the measured information to the terminal device 210, and the network device 220 can determine the position and / or posture of the terminal device 210 according to the received measurement information.

[0137] It should be understood that Figure 1 and Figure 2The multiple antennas involved in each device may be physical antennas at multiple different positions on the device, or may be virtual antennas formed by the movement of a certain antenna on the device, or a combination of the two, and this application does not limit this.

[0138] also, Figure 1 and Figure 2 The application scenarios shown are only exemplary and should not impose any limitation on the present application. The embodiments of the present application can be applied to any communication scenario in which a transmitting device and a receiving device communicate with each other.

[0139] In order to facilitate a better understanding of the technical solution of the present application, some related technologies involved in the technical solution of the present application are introduced.

[0140] 1. Reference signal

[0141] A reference signal is a physical signal that carries a sequence and is sent to achieve a specific function. In this application, the reference signal (RS) involved is a positioning reference signal (PRS), such as a sidelink positioning reference signal (SL-PRS). RS is a physical signal generated by mapping a specific sequence to the corresponding time-frequency resources according to the pre-transmitted resource mapping method.

[0142] 2. Number of transmissions and reservations

[0143] Number of transmissions: refers to the number of times the same signal (such as a reference signal) is sent, that is, the number of times it is sent repeatedly.

[0144] Reservation: In a time domain unit (such as a time slot, for distinction, referred to as time domain unit #1), the indication information of the resources of the reference signal in time domain unit #1 is sent, and the time domain and / or frequency domain resource position of the reserved resources for this reference signal in at least one time domain unit (such as a time slot, for distinction, referred to as time domain unit #2) can also be indicated. Optionally, time domain unit #2 is after time domain unit #1. Optionally, the total number of transmissions and reservations including time domain unit #1 and at least one time domain unit #2 can be indicated using the maximum number of reservations (MaxNumPerReserve).

[0145] As an example, the relationship between transmission (or retransmission) and reservation:

[0146] Optionally, the transmission on the time domain unit #1 and the retransmission on the subsequent time domain unit (such as a time slot) means that the same parameter signal is determined to be sent multiple times in succession;

[0147] The reservation on at least one time domain unit #2 indicated on time domain unit #1 is a resource reserved for future transmission. The sending device may transmit on time domain unit #2 or may not transmit on time domain unit #2, but this indication information can at least be used to exclude the use of resources when the receiving device selects resources.

[0148] Optionally, the transmission on the time domain unit #1 may be an initial transmission or a retransmission of a reference signal, which is not limited in the present application.

[0149] 3. Time and frequency resources

[0150] In this application, data or information can be carried by time-frequency resources, which can also be called transmission resources.

[0151] In the time domain, the time-frequency resources may include one or more time domain units (or, may also be referred to as time units). A time domain unit may be a symbol, or a mini-slot, or a slot, or a partial slot, or a subframe, or a radio frame, and so on.

[0152] In the frequency domain, time-frequency resources may include one or more frequency domain units. A frequency domain unit may be a resource element (RE), or a resource block (RB), or a subchannel, or a resource pool, or a bandwidth, or a bandwidth part (BWP), or a carrier, or a channel, or an interlace RB, etc.

[0153] In the present application, as an example, a time slot is the most basic time domain resource unit for one transmission. Optionally, a time slot includes: a full time slot, a mini time slot, a partial time slot, or a sub-time slot consisting of one or more OFDM symbols. Optionally, a time slot can also be a set of one or more symbols. For example, a time slot can also include a set of one or more OFDM symbols, for example, the number of the one or more OFDM symbols is 1, 2, 3, 4, 6, 7, 12 or 14, etc.

[0154] In addition, the duration of a time slot can be related to the subcarrier spacing. For example, when the subcarrier spacing is 15kHz, the duration of a time slot is 1 millisecond (ms); when the subcarrier spacing is 30kHz, the duration of a time slot is 0.5ms; when the subcarrier spacing is 60kHz, the duration of a time slot is 0.25ms. Similarly, when the subcarrier spacing is 15*2 u The length of a time slot is 2 -u ms, u=0,1,2,…and other integers.

[0155] For the convenience of description, the time slot referred to in the present application may include a time slot, a mini time slot, or any one of a partial time slot and a complete time slot.

[0156] 4. Comb

[0157] When the signal is mapped to the corresponding symbol, a reference signal is mapped to every N resources on the corresponding frequency domain resources, and no reference signal is mapped to the other N-1 resources. This mapping method of frequency domain resources is called comb teeth. The value of N in the comb teeth is called the size of the comb teeth. In this application, the size of the comb teeth can also be called Comb-N.

[0158] Optionally, in a frequency domain bandwidth of a certain size, the comb teeth can also be described as: the resources in each symbol are Y REs in Y×N REs, there is a reference signal in every N REs, Y is a number greater than zero, and N is a positive integer. In this way, the N REs can be used by different communication devices respectively.

[0159] Optionally, assuming that there are K PRBs on the frequency domain bandwidth, the size of Y is: Nre_rb*K / N, where Nre_rb represents the number of REs in a PRB, for example, Nre_rb = 12. As an example, the value of K is determined by the bandwidth of the frequency domain resource where the reference signal is located, such as the bandwidth of the resource pool, the bandwidth of the carrier, the bandwidth of the BWP, etc.

[0160] Optionally, for the reference signal in the comb state, from the frequency domain point of view, there are N orthogonal frequency domain resources for the reference signal. Among them, the N orthogonal frequency domain resources can also be referred to as a comb offset (Comb offset). In the present application, the comb offset can also be referred to as a frequency domain comb resource element offset (comb RE offset), a resource element offset value (REoffset), an offset value, etc. The value corresponding to the comb offset can be [0, 1, ..., N-1], or [1, 2, ..., N]. When the reference signal is mapped in one of the N REs, there can be N different mapping positions of the frequency domain resources of the reference signal, that is, N different comb offsets.

[0161] Figure 3is a schematic diagram of the resources occupied by the downlink positioning reference signal. Figure 3 As shown, the time-frequency resources occupied by the downlink positioning reference signal are mapped in a comb-tooth shape. Figure 3 The time-frequency mapping patterns of the downlink positioning reference signal when the comb size is 2, 4, 6 and 12 are shown respectively. In the figure, one small square represents one RE, and the shaded part represents the RE occupied by the SL-PRS. For example, when the comb size is 2 (Comb-2), on each symbol, a device can map one downlink positioning reference signal on every 2 REs. In other words, when the comb size is 2, the mapping interval of the downlink positioning reference signal in the frequency domain is 2. Similarly, when the comb size is 4 (Comb-4), on each symbol, one downlink positioning reference signal is mapped on every 4 REs, and the mapping interval of the downlink positioning reference signal in the frequency domain is 4. When the comb size is 6 (Comb-6), on each symbol, one downlink positioning reference signal is mapped on every 6 REs, and the mapping interval of the downlink positioning reference signal in the frequency domain is 6. When the comb tooth size is 12 (Comb-12), in each symbol, a downlink positioning reference signal is mapped to every 12 REs, and the mapping interval of the downlink positioning reference signal in the frequency domain is 12.

[0162] Optionally, in the case where there are 106 PRBs in the frequency domain bandwidth, for Comb-2, Y=2*106, and for Comb-3, Y=3*106.

[0163] Figure 4 It is a schematic diagram of the resources occupied by the uplink positioning reference signal, that is, a schematic diagram of the time-frequency pattern of the SL-PRS. In the figure, one small square represents one RE, the shaded part represents the RE occupied by the SL-PRS, the horizontal direction represents the time domain (such as symbol), and the vertical direction represents the frequency domain (such as RE).

[0164] Figure 4 (a) shows the time-frequency mapping pattern of SL-PRS when the comb size is 2 (or the frequency domain interval is 2) and occupies 1 symbol.

[0165] Figure 4 (b) shows the time-frequency mapping pattern of SL-PRS when the comb size is 2 and occupies 2 symbols.

[0166] Figure 4 (c) shows the time-frequency mapping pattern of SL-PRS when the comb size is 4 and occupies 2 symbols.

[0167] Figure 4 (d) shows the time-frequency mapping pattern of SL-PRS when the comb size is 2 and occupies 4 symbols.

[0168] Figure 4 (e) shows the time-frequency mapping pattern of SL-PRS when the comb size is 4 and occupies 4 symbols.

[0169] Figure 4 (f) shows the time-frequency mapping pattern of SL-PRS when the comb size is 8 and occupies 4 symbols.

[0170] Figure 4 (g) shows the time-frequency mapping pattern of SL-PRS when the comb size is 4 and occupies 8 symbols.

[0171] Figure 4 (h) shows the time-frequency mapping pattern of SL-PRS when the comb size is 8 and occupies 8 symbols.

[0172] Figure 4 (i) shows the time-frequency mapping pattern of SL-PRS when the comb size is 4 and occupies 12 symbols.

[0173] Figure 4 (j) shows the time-frequency mapping pattern of SL-PRS when the comb size is 8 and occupies 12 symbols.

[0174] Among them, the frequency domain interval value N for sending SL-PRS comb This means that one SL-PRS is placed in every N REs in the frequency domain, and no signal is placed in the other N-1 REs. Figure 4 In (a), (b), and (d), one SL-PRS is placed every 2 REs in the frequency domain, so the frequency domain spacing is 2. For example, in Figure 4 In (c), (e), (g), and (i), one SL-PRS is placed every 4 REs in the frequency domain, so the frequency domain interval is 4. Figure 4 In (f), (h), and (j), one SL-PRS is placed every 8 REs in the frequency domain, so the frequency domain interval is 8. It should be understood that in this application, the frequency domain interval value N for sending SL-PRS is comb It can also be understood as comb teeth or comb tooth size, etc., with K TC Or N represents.

[0175] In addition, if the resources occupied by a certain message are continuous in the frequency domain, it can be said that its frequency domain interval value is 1. For example, for PSSCH, it is continuous in the frequency domain, so its frequency domain interval value is 1.

[0176] 4. The time slot structure where SL-PRS is located.

[0177] Taking a time slot as an example, in one transmission, the time domain resources (such as the number of symbols) occupied by the SL-PRS in a time slot can be continuous. When the SL-PRS is transmitted multiple times, the time domain resources of each transmission of the SL-PRS can be discontinuous, and each transmission of the SL-PRS can be scheduled by the corresponding physical sidelink control channel (PSCCH).

[0178] Figure 5 This is a schematic diagram of the time slot structure in which SL-PRS and PSCCH are transmitted together. Figure 5 As shown, the time slot structure may include: time domain resources occupied by the channel carried by the demodulation reference signal (DMRS), time domain resources occupied by the physical sidelink control channel (PSCCH), time domain resources occupied by the physical sidelink shared channel (PSSCH), physical sidelink feedback channel (PSFCH), and time domain resources processed by automatic gain control (AGC) and empty symbols (G). Optionally, in the present application, the AGC symbol is a symbol used for automatic gain control of the receiver. From the perspective of the transmitting device, the AGC symbol may transmit a reference signal or a copy of the symbol adjacent to and following the AGC symbol.

[0179] like Figure 5 As shown, the sending timing of PSCCH is earlier than the sending timing of SL-PRS. Among them, PSSCH can carry sidelink control information (SCI), which can be used to indicate the transmission parameters of SL-PRS, such as time domain resource indication information of SL-PRS, frequency domain resource indication information of SL-PRS, priority of SL-PRS, reserved period indication information of SL-PRS, source identification indication information corresponding to sending SL-PRS, destination identification indication information corresponding to receiving SL-PRS, etc. In actual communication, the resources of PSCCH may not correspond one to one with the resources of SL-PRS, that is, the resources of PSCCH may be more or less than the resources of SL-PRS.

[0180] Table 1 shows the number of PSCCH resources under different SCS and bandwidth.

[0181] Table 1

[0182] Bandwidth (MHz) <![CDATA[N RB (SCS=15,30,60kHz)]]> <![CDATA[N PSCCH ]]> 20 106 / 51 / 24 10 / 5 / 2 40 216 / 106 / 51 21 / 10 / 5 80 NA / 217 / 107 NA / 21 / 10 100 NA / 273 / 135 NA / 27 / 13

[0183] In Table 1, N RB Indicates the number of RBs under different subcarrier spacing (SCS), N PSCCH Indicates the number of RBs occupied by PSCCH. Generally, the comb teeth size of SL-PRS is 1, 2, 4, 6, 8, 10, 12. Then the following situations may exist: the number of RBs occupied by PSCCH is 10 / 5 / 2, and the number of RBs occupied by SL-PRS is 6n, 8n, 12n, where n = 1, 2, 3.

[0184] Depend on Figure 5 As can be seen from Table 1, the resources of PSCCH may be more or less than the resources of SL-PRS, that is, in the transmission of SL-PRS, the resources of SL-PRS may be more than the number of resources of PSCCH that schedules its transmission parameters, or in other words, there is a multi-correspondence between the number of SL-PRS resources and the number of PSCCH resources. In this case, how to indicate the resources of SL-PRS and PSCCH is a problem to be solved.

[0185] In view of this, the present application proposes a solution to solve the problem of indicating PSCCH resources and SL-PRS resources when there is no one-to-one mapping relationship between PSCCH resources and SL-PRS resources or there is a one-to-many mapping relationship.

[0186] It should be noted that in this application, "indication" may include direct indication, indirect indication, explicit indication, and implicit indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0187] In the present application, the information indicated by the indication information is referred to as the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the index of the information to be indicated. The information to be indicated can also be indirectly indicated by indicating other information, wherein there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while the other parts of the information to be indicated are known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, specified by the protocol), thereby reducing the indication overhead to a certain extent. In addition, the information to be indicated can be sent as a whole, or it can be divided into multiple sub-information and sent separately, and the sending period and / or sending time of these sub-information can be the same or different.

[0188] It should also be noted that, in the present application, "configuration" can be a network device configuration, or it can be a preconfiguration, or it can be predefined, such as a standard predefined.

[0189] The following will describe in detail the method provided by the embodiment of the present application in conjunction with the accompanying drawings. The embodiment provided by the present application can be applied to the above Figure 1 or Figure 2 In the scenario shown, no limitation is given.

[0190] Figure 6 It is a schematic diagram of a method 600 provided in an embodiment of the present application. Figure 6 The illustrated method 600 may include the following steps.

[0191] 610. Determine a first resource and a second resource, where the first resource is used to transmit a control channel and the second resource is used to transmit a reference signal.

[0192] Determining the first resource and the second resource may include: receiving information about the first resource and the second resource, such as receiving information about the first resource and the second resource from a network side; or may also include determining the information about the first resource and the second resource by itself.

[0193] As an example, the reference signal is a sidelink reference signal, such as a reference signal used for positioning in the sidelink, and a reference signal used for beam detection or beam management in the sidelink. As an example, the sidelink reference signal includes, but is not limited to: SL-PRS, phase-tracking-reference signal (PT-RS), channel state information-reference signal (CSI-RS), BM-RS, or demodulation reference signal (DMRS).

[0194] As an example, the control channel is PSCCH, PSFCH, PUCCH, PDCCH, etc.

[0195] As an example, the reference signal is a reference signal scheduled by a control channel. Take the control channel as PSCCH and the reference signal as SL-PRS as an example. PSCCH can carry control information, such as SCI, and SCI can be used to indicate the transmission parameters of the SL-PRS scheduled by the PSCCH, for example: the transmission parameters may include one or more of the following information: time domain resource indication information of SL-PRS, frequency domain resource indication information of SL-PRS, priority of SL-PRS, reserved period indication information of SL-PRS, source identification indication information corresponding to SL-PRS, destination identification indication information corresponding to SL-PRS, etc.

[0196] Figure 7 It is a schematic diagram of reference signal and control channel transmission applicable to an embodiment of the present application.

[0197] For example, if Figure 7 As shown in (1), the control channel and the reference signal are transmitted once, that is, the control channel and the reference signal are transmitted on the time domain unit #1. The reference signal transmitted on the time domain unit #1 can be considered as the reference signal scheduled by the control channel transmitted on the time domain unit #1.

[0198] For example, Figure 7 As shown in (2), the control channel and the reference signal are transmitted twice, that is, the control channel and the reference signal are transmitted on time domain unit #1 and time domain unit #2. The reference signal transmitted on time domain unit #1 can be considered as the reference signal scheduled by the control channel transmitted on time domain unit #1. The reference signal transmitted on time domain unit #2 can be considered as the reference signal scheduled by the control channel transmitted on time domain unit #1, and can also be considered as the reference signal scheduled by the control channel transmitted on time domain unit #2.

[0199] For example, Figure 7 As shown in (3), the control channel and the reference signal are transmitted three times, that is, the control channel and the reference signal are transmitted on time domain unit #1, time domain unit #2, and time domain unit #3. The reference signal transmitted on time domain unit #1 can be considered as the reference signal scheduled by the control channel transmitted on time domain unit #1; the reference signal transmitted on time domain unit #2 can be considered as the reference signal scheduled by the control channel transmitted on time domain unit #1, or as the reference signal scheduled by the control channel transmitted on time domain unit #2; the reference signal transmitted on time domain unit #3 can be considered as the reference signal scheduled by the control channel transmitted on time domain unit #1, or as the reference signal scheduled by the control channel transmitted on time domain unit #2, or as the reference signal scheduled by the control channel transmitted on time domain unit #3.

[0200] In the following embodiments, for the convenience of description, the control channel on the same time domain unit schedules the reference signal on the time domain unit as an example for exemplary description. Figure 7 For example, the reference signal transmitted on time domain unit #1 is the reference signal scheduled by the control channel transmitted on time domain unit #1, and the reference signal transmitted on time domain unit #2 is the reference signal scheduled by the control channel transmitted on time domain unit #2, and the reference signal transmitted on time domain unit #3 is the reference signal scheduled by the control channel transmitted on time domain unit #3.

[0201] It can be understood that the reference signal may not be a reference signal for control channel scheduling, and this is not limited. For ease of description, the following mainly takes the reference signal as a reference signal for control channel scheduling as an example for description.

[0202] 620, sending indication information, the indication information indicating a first resource and a second resource, the first resource including a resource for transmitting a control channel on a second time domain unit, the second resource including a resource for transmitting a reference signal on the first time domain unit, and / or a resource for transmitting a reference signal for scheduling a control channel on the second time domain unit, wherein the second time domain unit is located after the first time domain unit.

[0203] The execution subject of method 600 may be a communication device, such as a first communication device. Specifically, the first communication device determines the first resource and the second resource, and sends indication information. For example, the first communication device sends indication information to the second communication device, and accordingly, the second communication device receives the indication information. Further optionally, the second communication device receives a reference signal for control channel scheduling on the second resource. Further optionally, the second communication device receives a control channel on the first resource; or, when determining the candidate resources, excludes the resources occupied by the control channel received on the first resource, and / or excludes the resources used to transmit the reference signal for control channel scheduling on the second time domain unit. Among them, excluding the resources occupied by the control channel received on the first resource means: excluding the resources occupied by the control channel received on the first resource in the candidate resource set. Similarly, excluding the resources used to transmit the reference signal for control channel scheduling on the second time domain unit means: excluding the resources used to transmit the reference signal for control channel scheduling on the second time domain unit in the candidate resource set.

[0204] The first communication device may be a terminal device or a chip or circuit for a terminal device, or may be a network device or a chip or circuit for a network device. The second communication device may be a terminal device or a chip or circuit for a terminal device, or may be a network device or a chip or circuit for a network device. In the application embodiment, the first communication device and the second communication device are both terminal devices as an example for exemplary description.

[0205] The first time domain unit may include one or more time domain units, and the second time domain unit may include one or more time domain units, which is not limited.

[0206] As an example, a time domain unit (such as a first time domain unit, and also such as a second time domain unit) may be a time slot. For the time domain unit, reference may be made to the above description, which will not be repeated here.

[0207] The first time domain unit may be a time domain unit where the initial transmission resources of the control channel and the reference signal are located, or may be a time domain unit where the retransmission resources of the control channel and the reference signal are located. The second time domain unit may be a time domain unit where the retransmission resources of the control channel and the reference signal are located. Taking the control channel as an example, two possible situations are introduced.

[0208] In a first possible case, the first time domain unit is a time domain unit where the initial transmission resource of the control channel is located, and the second time domain unit is a time domain unit where the retransmission resource of the control channel is located. In this case, the first resource is a retransmission resource of the control channel.

[0209] In a second possible situation, the first time domain unit and the second time domain unit are both time domain units where the retransmission resource of the control channel is located. In this situation, the first resource is the retransmission resource of the control channel.

[0210] As an example, a time domain unit (such as a first time domain unit, and also such as a second time domain unit) may include time domain resources for transmitting a control channel and time domain resources for transmitting a reference signal, wherein the time domain resources (such as symbols) occupied by the control channel in the time domain unit are located before the time domain resources (such as symbols) occupied by the reference signal in the time domain unit. In this way, it is convenient for the receiving end to obtain relevant information of the reference signal according to the signaling on the control channel, and thus receive the reference signal more accurately.

[0211] As an example, at least one of the following items can also be transmitted on a time domain unit (such as a first time domain unit, and also such as a second time domain unit): PSSCH, AGC. As an example, the time domain resources (such as symbols) occupied by AGC on the time domain unit are located at the starting position of the time domain unit, such as the first L symbols (L is an integer greater than 1 or equal to 1). For example, the time domain resources (such as symbols) occupied by AGC on the time domain unit are located before the following time domain resources: the time domain resources (such as symbols) occupied by the control channel on the time domain unit, the time domain resources (such as symbols) occupied by PSSCH on the time domain unit, and the time domain resources (such as symbols) occupied by the reference signal on the time domain unit.

[0212] The first resource includes a resource used for transmitting a control channel on the second time domain unit. Based on this, it can be known that the first resource is a retransmission resource of the control channel. As for the resource used for transmitting the control channel on the first time domain unit, as an example, the receiving end can determine it through blind detection.

[0213] The second resource includes resources used to transmit reference signals on the first time domain unit, and / or resources used to transmit reference signals for control channel scheduling on the second time domain unit. Based on this, it can be seen that the second resource may include initial transmission resources and / or retransmission resources of the reference signal. Three situations are introduced below.

[0214] In a first possible situation, the second resource includes a resource used for transmitting a reference signal on the first time domain unit.

[0215] Taking the reference signal as a reference signal for control channel scheduling as an example, the resources on the first time domain unit used to transmit the reference signal may be: the resources on the first time domain unit used to transmit the reference signal for control channel scheduling on the first time domain unit, that is, the second resources may include the resources on the first time domain unit used to transmit the reference signal for control channel scheduling on the first time domain unit.

[0216] For example, the control channel on the first time domain unit is called control channel #1, the reference signal on the first time domain unit is called reference signal #1, and the reference signal #1 is the reference signal scheduled by the control channel #1. The second resource includes resources on the first time domain unit for transmitting the reference signal scheduled by the control channel on the first time domain unit, indicating that the second resource includes resources on the first time domain unit for transmitting the reference signal #1 scheduled by the control channel #1.

[0217] In a second possible situation, the second resource includes a resource used for transmitting a reference signal on a second time domain unit.

[0218] Taking the reference signal as a reference signal for control channel scheduling as an example, the resource used to transmit the reference signal on the second time domain unit, and the resource used to transmit the reference signal for control channel scheduling on the second time domain unit on the second time domain unit. For example, the second resource may include a resource used to transmit the reference signal for control channel scheduling transmitted on the second time domain unit on the second time domain unit.

[0219] For example, the control channel on the second time domain unit is called control channel #2, the reference signal on the second time domain unit is called reference signal #2, and the reference signal #2 is the reference signal scheduled by the control channel #2. The second resource includes resources on the second time domain unit for transmitting the reference signal scheduled by the control channel, indicating that the second resource includes resources on the second time domain unit for transmitting the reference signal #2 scheduled by the control channel #2.

[0220] In a third possible situation, the second resources include resources used for transmitting reference signals on the first time domain unit and resources used for transmitting reference signals on the second time domain unit.

[0221] This situation can be referred to the previous two situations, which will not be repeated here.

[0222] For ease of understanding and simplicity, the following takes the reference signal as SL-PRS, the second resource as SL-PRS resource, the control channel as PSCCH, and the first resource as PSCCH resource as an example to introduce the relevant scheme of indication information.

[0223] Optionally, the indication information is carried in any of the following signaling: control signaling on a control channel, a media access control-control element (MAC-CE), or a radio resource control (RRC). Taking the reference signal as a sidelink reference signal as an example, the control signaling on the control channel may be, for example, an SCI.

[0224] Optionally, the indication information includes the following three schemes:

[0225] Solution 1: The indication information includes two fields, which are used to indicate SL-PRS resources and PSCCH resources respectively.

[0226] Solution 2: The indication information includes a field indicating SL-PRS resources and PSCCH resources.

[0227] Solution 3, the indication information indicates the mapping relationship (or association relationship, or corresponding relationship) between SL-PRS resources and PSCCH resources.

[0228] These solutions are introduced below.

[0229] Solution 1, the indication information includes two fields, and the two fields respectively indicate SL-PRS resources and PSCCH resources.

[0230] Based on this scheme, the SL-PRS resource and the PSCCH resource can be indicated respectively by two signalings (or two fields). As an example, this scheme 1 can be applicable to a scenario where there may not be a fixed mapping relationship between the PSCCH resource and the SL-PRS resource, or there is no one-to-one mapping relationship.

[0231] For example, the indication information includes a first field and a second field, the first field indicates a PSCCH resource, and the second field indicates an SL-PRS resource. In a possible implementation, the first field is an identifier of the PSCCH resource, and the second field is an identifier of the SL-PRS resource. The location of the resource can be known through the identifier of the resource.

[0232] The identification of SL-PRS resources and the identification of PSCCH resources are described below respectively.

[0233] 1. Identification of SL-PRS resources

[0234] Optionally, the identifier of the SL-PRS resource is determined by at least one of the following parameters: a time domain resource identifier of the SL-PRS resource in the first time domain unit, a time domain resource identifier of the SL-PRS resource in the second time domain unit, and a resource quantity of the SL-PRS resource in the first time domain unit.

[0235] In a possible implementation manner, the identification of the SL-PRS resource satisfies Formula 1, or the result of the identification of the SL-PRS resource satisfies Formula 1.

[0236]

[0237] The meanings of the parameters in Formula 1 are as follows.

[0238] W1 represents the identifier of the SL-PRS resource.

[0239] N ID Indicates the number of SL-PRS resources in the time domain unit. Taking the time domain unit as a time slot as an example, N ID It can represent the number of all resources of SL-PRS signals in a time slot.

[0240] n ID,1 Indicates the resource identifier for transmitting the SL-PRS in the first time domain unit. ID,1 The method for determining the value of is not limited. For example, n ID,1 The value of may be an SL-PRS resource identifier directly determined in a time slot, or may be calculated through other parameters or variables.

[0241] n ID,i In other words, n represents the resource identifier for transmitting the SL-PRS in the (i-1)th second time domain unit. ID,i In other words, n ID,i Indicates the resource identifier reserved for the SL-PRS in the i-th time slot. i is an integer greater than or equal to 2.

[0242] In the embodiment of the present application, the specific determination method of the resource identifier of the SL-PSR is not limited. As an example, the resource identifier of the SL-PSR can be determined based on one or more (such as T) SL-PRS transmission resources in a time slot, where T is an integer greater than 1 or equal to 1.

[0243] Optionally, the resource identifier of the SL-PSR is determined based on at least one of the following parameters: the position of the first SLPRS transmission resource in the time domain, the offset or comb tooth size of the first SLPRS transmission resource in the frequency domain, the position of the second SLPRS transmission resource in the time domain, the comb tooth offset or comb tooth size of the second SLPRS transmission resource in the frequency domain, the number of SLPRS resources included in the first SLPRS transmission resource, and the number of SLPRS resources included in the second SLPRS transmission resource, wherein the T transmission resources include a first SLPRS transmission resource and at least one second SLPRS transmission resource.

[0244] As an example, the resource identifier n of the SL-PSR ID Any of the following can be met:

[0245] n ID =n RE +m s *N 1,comb

[0246] n ID =n RE +N 1,comb +(m s -1)*N 2,comb

[0247] n ID =n RE +N 1,comb +N 2,comb +(m s -2)*N 3,comb

[0248] Among them, n ID Indicates the resource identifier of SL-PRS; N i,comb Indicates the comb tooth size of the i-th transmission reference signal; n RE Represents the offset of the reference signal in the frequency domain; m s =i-1, indicating the indication information that the reference signal is transmitted on the i-th transmission resource; i=1,2,3.

[0249] As an example, m s = 0, n RE The value ranges from 0 to N. 1,comb ; When m s =1, n RE The value ranges from 0 to N.2,comb ; When m s =2, n RE The value ranges from 0 to N. 3,comb .

[0250] For example, there are two SL-PRS transmission resources in one time slot, such as Figure 5 As shown in (2) or (5) in . Assume that the number of SL-PRS symbols and comb tooth size on these two SL-PRS transmission resources are {M1, N 1,comb}, {M2, N 2,comb}. The resource identifier of SL-PRS is determined as follows: ID =n RE +m s *N 1,comb Among them, m s =0 or 1. m s =0 means that SL-PRS is sent on the first transmission resource; m s = 1 means that SL-PRS is sent on the second transmission resource. ID,1 =n RE , n ID,2 =n RE +N 1,comb .

[0251] For another example, there are three SL-PRS transmission resources in a time slot, such as Figure 5 As shown in (4) or (7) in . Assume that the number of SL-PRS symbols and comb tooth size on these three SL-PRS transmission resources are {M1, N 1,comb}, {M2, N 2,comb}, {M3, N 3,comb}. If m s ≤1, then the resource identifier of SL-PRS is determined as follows: ID =n RE +m s *N 1,comb If m s =2, then the resource identifier of SL-PRS is determined as follows: ID =n RE +N 1,comb +(m s -1)*N 2,comb Specifically, n ID,1 =n RE , n ID,2 =n RE +N 1,comb , n ID,3 =n RE +N 1,comb +N 2,comb.

[0252] For another example, there are four SL-PRS transmission resources in a time slot. Assume that the number of SL-PRS symbols and comb tooth sizes on these four SL-PRS transmission resources are {M1, N 1,comb}, {M2, N 2,comb}, {M3, N 3,comb}, {M4, N 4,comb}. If m s ≤1, then the resource identifier of SL-PRS is determined as follows: ID =n RE +m s *N 1,comb If m s =2, then the resource identifier of SL-PRS is determined as follows: ID =n RE +N 1,comb +(m s -1)*N 2,comb If m s =3, then the resource identifier of SL-PRS is determined as follows: ID =n RE +N 1,comb +N 2,comb +(m s -2)*N 3,comb Specifically, n ID,1 =n RE , n ID,2 =n RE +N 1,comb , n ID,3 =n RE +N 1,comb +N 2,comb , n ID,4 =n RE +N 1,comb +N 2,comb +N 3,comb .

[0253] The above are some examples, and the embodiments of the present application are not limited thereto.

[0254] It can be understood that the above formula 1 is an example and is not limited to this. For example, formula 1 can also be expressed as: Among them, N ID (0) The value of can be 1.

[0255] The meanings of the above parameters will not be elaborated below.

[0256] 2. Identification of PSCCH resources

[0257] Optionally, the identifier of the PSCCH resource is determined by at least one of the following parameters: a frequency domain starting position of the PSCCH resource in the second time domain unit, and a number of frequency domain resources of the PSCCH resource in the time domain.

[0258] In a possible implementation manner, the identification of the PSCCH resource satisfies Formula 2, or the result of the identification of the PSCCH resource satisfies Formula 2.

[0259]

[0260] The meanings of the parameters in Formula 2 are as follows.

[0261] W2 represents information indicating the location of the PSCCH resource in the frequency domain.

[0262] Indicates the location of the PSCCH resource of the second transmission (or the first retransmission) in the frequency domain.

[0263] Indicates the position of the PSCCH resource of the (z+1)th transmission (or zth retransmission) in the frequency domain.

[0264] N subCH Indicates the number of PSCCH resources in a timeslot or in a resource pool.

[0265] As an example, the position of the PSCCH resource in the frequency domain may be the position of the first frequency domain resource or the last frequency domain resource (such as RE or PRB) of the PSCCH.

[0266] It can be understood that the above formula 2 is an example and is not limited to this. For example, formula 2 can also be expressed as: Among them, N subCH 0 The value of can be 1.

[0267] The meanings of the above parameters will not be elaborated below.

[0268] The SL-PRS resources and the PSCCH resources are identified above respectively. The following is an exemplary description combining two scenarios and specific examples.

[0269] In a possible scenario, the number of transmissions of PSCCH and SL-PRS is 1, or the value of the maximum number of sidelink reservations (sl-MaxNumPerReserve) is 1.

[0270] Wherein, sl-MaxNumPerReserve indicates the maximum number of reserved resources indicated by the SCI. The value of sl-MaxNumPerReserve is x, indicating that the number of transmissions is x, where x is an integer greater than 1 or equal to 1.

[0271] In this scenario, the indication information includes the second field. The indication information may not include the first field. Because for the first transmitted PSCCH, the receiving end can obtain the resource location of the PSCCH through blind detection, so it is not necessary to indicate the resource location of the PSCCH, saving signaling overhead.

[0272] In this scenario, the identification of the SL-PRS resource indicated by the second field may satisfy Formula 3, or in other words, the result of the identification of the SL-PRS resource satisfies Formula 3.

[0273] W1=n ID,1

[0274] Formula 3

[0275] like Figure 7 As shown in (1), the value of sl-MaxNumPerReserve is 1, and the transmitting end (such as the first communication device) can carry the second field in the indication information to indicate the location of the SL-PRS resource. The receiving end (such as the second communication device) can obtain the resource location of the PSCCH through blind detection, and obtain the location of the SL-PRS resource scheduled by the PSCCH through the second field in the indication information.

[0276] Another possible scenario is that the number of transmissions of PSCCH and SL-PRS is greater than 1, or the value of sl-MaxNumPerReserve is greater than 1.

[0277] In this scenario, the indication information includes a first field and a second field, the first field indicates PSCCH resources, and the second field indicates SL-PRS resources.

[0278] The identifier of the SL-PRS resource indicated by the second field may satisfy the above formula 1. The identifier of the PSCCH resource indicated by the first field may satisfy the above formula 2.

[0279] Two specific examples are given below.

[0280] Example 1, the value of sl-MaxNumPerReserve is 2, that is, the number of transmissions of PSCCH and SL-PRS is 2. Specifically, the two transmissions may include one initial transmission and one retransmission.

[0281] Based on Formula 3, it can be seen that the identifier of the SL-PRS resource used for the first transmission (ie, initial transmission) satisfies: W1 = n ID,1 Based on formula 1, it can be seen that the identifier of the SL-PRS resource used for the second transmission (ie, the first retransmission) satisfies: W1 = n ID,1 +n ID,2 *N IDBased on Formula 2, it can be seen that the identifier of the PSCCH resource used for the second transmission (ie, the first retransmission) satisfies:

[0282] like Figure 7 As shown in (2), the value of sl-MaxNumPerReserve is 2. For the first transmitted PSCCH and SL-PRS, the receiving end can obtain the resource location of the PSCCH through blind detection, and obtain the resource location of the SL-PRS through the second field in the indication information, such as obtaining the resource identifier of the SL-PRS based on the second field (W1=n ID,1 ), and then the resource location of the SL-PRS is known based on the resource identifier of the SL-PRS. For the second transmission of the PSCCH and SL-PRS, the receiving end can obtain the resource location of the PSCCH through the first field in the indication information, such as knowing the resource identifier of the PSCCH based on the first field Then, the resource location of the PSCCH is obtained based on the resource identifier of the PSCCH; and the receiving end can obtain the resource location of the SL-PRS through the second field in the indication information, such as obtaining the resource identifier of the SL-PRS based on the second field (W1=n ID,1 +n ID,2 *N ID ), and then obtain the resource location of the SL-PRS based on the resource identifier of the SL-PRS.

[0283] Example 2, the value of sl-MaxNumPerReserve is 3, that is, the number of transmissions of PSCCH and SL-PRS is 3. Specifically, the two transmissions may include one initial transmission and two retransmissions.

[0284] Based on Formula 3, it can be seen that the identifier of the SL-PRS resource used for the first transmission (ie, initial transmission) satisfies: W1 = n ID,1 , the resource identifier of the SL-PRS used for the second transmission (ie, the first retransmission) satisfies: W1 = n ID,1 +n ID,2 *N ID , the resource identifier of the SL-PRS used for the third transmission (i.e., the second retransmission) satisfies: W1 = n ID,1 +n ID,2 *N ID +n ID,3 *N ID 2 .

[0285] Based on Formula 2, it can be seen that the identifier of the PSCCH resource used for the second transmission (i.e., the first retransmission) satisfies: The identifier of the PSCCH resource used for the third transmission (i.e., the second retransmission) satisfies: in, Indicates the location of the PSCCH resource of the third transmission (ie, the second retransmission) in the frequency domain.

[0286] like Figure 7 As shown in (3), the value of sl-MaxNumPerReserve is 3. For the first transmitted PSCCH and the SL-PRS scheduled by the PSCCH, the receiving end can obtain the resource location of the PSCCH through blind detection, and obtain the resource location of the SL-PRS through the second field in the indication information. For the second and third transmitted PSCCH and the SL-PRS scheduled by the PSCCH, the receiving end can obtain the resource location of the PSCCH through the first field in the indication information, and obtain the resource location of the SL-PRS through the second field in the indication information.

[0287] The above describes solution 1. Through the above solution 1, when the SLPRS resources and the PSCCH resources are not in one-to-one correspondence, the positions of the PSCCH resources and the SLPRS resources can be flexibly indicated at the same time, thereby realizing flexible allocation of the PSCCH resources and the SLPRS resources.

[0288] Solution 2: Use signaling to jointly indicate SL-PRS resources and PSCCH resources.

[0289] Based on this scheme, the SL-PRS resource and the PSCCH resource can be jointly indicated by one signaling (or one field). As an example, this scheme 2 can be applied to a scenario where there may not be a fixed mapping relationship between the PSCCH resource and the SL-PRS resource, or there is no one-to-one mapping relationship.

[0290] For example, the indication information includes a third field, which indicates the SL-PRS resource and the PSCCH resource. For example, the third field is obtained by jointly encoding the identifier of the SL-PRS resource and the identifier of the PSCCH resource. For simplicity, the value obtained by the joint encoding is called the resource indication value. In this way, for the transmitting end (such as the first communication device), the identifier of the SL-PRS resource and the identifier of the PSCCH resource can be jointly encoded to obtain the jointly encoded resource indication value; for the receiving end (such as the second communication device), the received resource indication value can be decoded to obtain the identifier of the SL-PRS resource and the identifier of the PSCCH resource, and then the location of the SL-PRS resource and the location of the PSCCH resource can be known.

[0291] Optionally, the resource indication value after joint coding is determined by at least one of the following parameters: the time domain resource identifier of the SL-PRS resource on the first time domain unit, the time domain resource identifier of the SL-PRS resource on the second time domain unit, the number of time domain resources of the SL-PRS resource on the first time domain unit, the frequency domain starting position of the PSCCH resource on the second time domain unit, the number of frequency domain resources of the PSCCH resource in the time domain, and the mapping relationship between the PSCCH resource and the SL-PRS resource, wherein there is at least one mapping relationship between the PSCCH resource and the SL-PRS resource. Among them, with respect to determining the resource indication value after joint coding based on the mapping relationship between the PSCCH resource and the SL-PRS resource, it may include: determining the values ​​of certain parameters in the formula (Formula 5 to Formula 8 described below) based on the mapping relationship between the PSCCH resource and the SL-PRS resource, which will be described in detail later.

[0292] Several possible implementations are provided below. The parameters mentioned in the following formulas can refer to the previous explanations of the parameters in Formulas 1 to 3, and will not be repeated here.

[0293] In a first possible implementation, the value of the third field is obtained by first encoding the identifier of the SL-PRS resource and then encoding the identifier of the PSCCH resource.

[0294] The following describes several scenarios.

[0295] In one possible scenario, the number of transmissions of PSCCH and SL-PRS is 1, or the value of sl-MaxNumPerReserve is 1.

[0296] In this scenario, the indication information includes a third field, which indicates the SL-PRS resource. Because for the first transmitted PSCCH, the receiving end can obtain the resource location of the PSCCH through blind detection, so it is not necessary to indicate the resource location of the PSCCH, saving signaling overhead.

[0297] As an example, in this scenario, the resource indication value indicated by the third field is an identifier of the SL-PRS resource, and the resource indication value satisfies Formula 4, or in other words, the result of the resource indication value indicated by the third field satisfies Formula 4.

[0298] W3=n ID,1

[0299] Formula 4

[0300] Wherein, W3 represents the resource indication value.

[0301] Another possible scenario is that the number of transmissions of PSCCH and SL-PRS is greater than 1, or the value of sl-MaxNumPerReserve is greater than 1.

[0302] In this scenario, the indication information includes a third field, which indicates the SL-PRS resource and the PSCCH resource. Based on the first possible implementation, the value of the third field is obtained by first encoding the identifier of the SL-PRS resource and then encoding the identifier of the PSCCH resource.

[0303] The following is an explanation with two specific examples.

[0304] Example 1, the value of sl-MaxNumPerReserve is 2, that is, the number of transmissions of PSCCH and SL-PRS is 2. Specifically, the two transmissions include one initial transmission and one retransmission.

[0305] Based on Formula 4, it can be known that the resource indication value of the first transmission (ie, initial transmission) indicated by the third field is the resource identifier of the SL-PRS and satisfies: W3=n ID,1 The resource indication value of the second transmission (ie, the first retransmission) indicated by the third field satisfies Formula 5, or in other words, the result of the resource indication value satisfies Formula 5.

[0306]

[0307] Among them, n ID,2 Indicates the resource identifier for transmitting SL-PRS in the first second time domain unit. In other words, n ID,2 Indicates the resource identifier reserved for the second transmission of SL-PRS. In other words, n ID,2 Indicates the resource identifier reserved for the SL-PRS in the second time slot.

[0308] Example 2, the value of sl-MaxNumPerReserve is 3, that is, the number of transmissions of PSCCH and SL-PRS is 3. Specifically, the two transmissions include one initial transmission and two retransmissions.

[0309] Based on Formula 4, it can be known that the resource indication value of the first transmission (ie, initial transmission) indicated by the third field is the resource identifier of the SL-PRS and satisfies: W3=n ID,1 Based on Formula 5, it can be seen that the resource indication value of the second transmission (i.e., the first retransmission) indicated by the third field satisfies:

[0310] The resource indication value of the third transmission (ie, the second retransmission) indicated by the third field satisfies Formula 6, or in other words, the result of the resource indication value satisfies Formula 6.

[0311]

[0312] Among them, n ID,3 Indicates the resource identifier for transmitting SL-PRS in the second time domain unit. In other words, n ID,3 Indicates the resource identifier reserved for the third transmission of SL-PRS. In other words, n ID,3 Indicates the resource identifier reserved for the SL-PRS in the third time slot.

[0313] In a second possible implementation, the value of the third field is obtained by first encoding the identifier of the PSCCH resource and then encoding the identifier of the SL-PRS resource.

[0314] The following describes several scenarios.

[0315] In a possible scenario, the number of transmissions of the PSCCH and the SL-PRS scheduled by the PSCCH is 1, or the value of sl-MaxNumPerReserve is 1.

[0316] For this scenario, please refer to the description in the first possible implementation method, which will not be repeated here.

[0317] Another possible scenario is that the number of transmissions of the PSCCH and the SL-PRS scheduled by the PSCCH is greater than 1, or the value of sl-MaxNumPerReserve is greater than 1.

[0318] In this scenario, the indication information includes a third field, which indicates the SL-PRS resource and the PSCCH resource. Based on the first possible implementation, the value of the third field is obtained by first encoding the identifier of the SL-PRS resource and then encoding the identifier of the PSCCH resource.

[0319] The following is an explanation with two specific examples.

[0320] Example 1, the value of sl-MaxNumPerReserve is 2, that is, the number of transmissions of PSCCH and SL-PRS is 2. Specifically, the two transmissions include one initial transmission and one retransmission.

[0321] Based on Formula 4, it can be seen that the resource indication value of the first transmission (ie, initial transmission) indicated by the third field is the resource identifier of the SL-PRS and satisfies: W3=n ID,1 The resource indication value of the second transmission (ie, the first retransmission) indicated by the third field satisfies Formula 7, or in other words, the result of the resource indication value satisfies Formula 7.

[0322]

[0323] Example 2, the value of sl-MaxNumPerReserve is 3, that is, the number of transmissions of PSCCH and SL-PRS is 3. Specifically, the two transmissions include one initial transmission and two retransmissions.

[0324] Based on Formula 4, it can be seen that the resource indication value of the first transmission (ie, initial transmission) indicated by the third field is the resource identifier of the SL-PRS and satisfies: W3=n ID,1 Based on Formula 7, it can be seen that the resource indication value of the second transmission (i.e., the first retransmission) indicated by the third field satisfies:

[0325] The resource indication value of the third transmission (ie, the second retransmission) indicated by the third field satisfies Formula 8, or in other words, the result of the resource indication value satisfies Formula 8.

[0326]

[0327] The above-mentioned scheme 2 (such as formula 4-formula 8) can be applied to the scenario where there may not be a fixed mapping relationship between PSCCH resources and SL-PRS resources, or there is no one-to-one mapping relationship, or it can also be applied to the scenario where there is a one-to-one mapping relationship between PSCCH resources and SL-PRS resources.

[0328] For example, for scenarios where there may not be a fixed mapping relationship between PSCCH resources and SL-PRS resources, or there is no one-to-one mapping relationship, the above scheme 2 (such as equations 5 to 8) can be selected to determine the resource indication value according to the actual situation; for scenarios where there is a one-to-one mapping relationship between PSCCH resources and SL-PRS resources, the resource indication value in the scenario can be obtained by taking specific values ​​for the parameters in the above formulas. As an example, if there is a one-to-one mapping relationship between PSCCH resources and SL-PRS resources, the parameter values ​​in the formulas (such as equations 5 to 8) are as follows: n ID,1 =0,n ID,2 =0,N ID =1.

[0329] Scheme 3 indicates the mapping relationship.

[0330] Based on this solution, considering that there may be a one-to-many mapping relationship between PSCCH resources and SL-PRS resources, the SL-PRS resources and PSCCH resources can be indicated by indicating the mapping relationship. Assume that there are K groups of mapping relationships between PSCCH resources and SL-PRS resources.

[0331] Wherein, K is greater than or equal to 1.

[0332] One possible situation is that K is greater than 1.

[0333] In a first possible implementation manner, the indication information indicates the group to which the PSCCH resources belong and the SL-PRS resources, and the group to which the PSCCH resources belong and the SL-PRS resources are used to determine the PSCCH resources.

[0334] Based on the implementation, the indication information may indicate which group the PSCCH belongs to and which one of the PRS resources indicated by the group the PRS belongs to. For example, in the initial transmission of the SL-PRS, it is indicated which group of the K groups the PSCCH belongs to (such as the kth group), and then in the subsequent retransmission, it is indicated which one of the multiple SL-PRS resources corresponding to the PSCCH in the kth group the SL-PRS belongs to.

[0335] Based on this implementation, the SL-PRS resources in the initial transmission and the retransmission may be different.

[0336] Here is an example.

[0337] Assume that K=2, there are 6 PSCCH resources and 12 SL-PRS resources. For the purpose of distinction and ease of description, the 6 PSCCH resources are recorded as: PSCCH resource 1, PSCCH resource 2, PSCCH resource 3, PSCCH resource 4, PSCCH resource 5, PSCCH resource 6, and the 12 SL-PRS resources are recorded as: SL-PRS resource 1, SL-PRS resource 2, SL-PRS resource 3, SL-PRS resource 4, SL-PRS resource 5, SL-PRS resource 6, SL-PRS resource 7, SL-PRS resource 8, SL-PRS resource 9, SL-PRS resource 10, SL-PRS resource 11, SL-PRS resource 12.

[0338] Assume that the first group of mapping relationships is: PSCCH resource 1 to PSCCH resource 6 correspond to SL-PRS resource 1 to SL-PRS resource 6. Specifically, PSCCH resource 1 corresponds to SL-PRS resource 1, PSCCH resource 2 corresponds to SL-PRS resource 2, PSCCH resource 3 corresponds to SL-PRS resource 3, PSCCH resource 4 corresponds to SL-PRS resource 4, PSCCH resource 5 corresponds to SL-PRS resource 5, and PSCCH resource 6 corresponds to SL-PRS resource 6.

[0339] The second group of mapping relationships is: PSCCH resource 1 to PSCCH resource 6 correspond to SL-PRS resource 7 to SL-PRS resource 17. Specifically, PSCCH resource 1 corresponds to SL-PRS resource 7, PSCCH resource 2 corresponds to SL-PRS resource 8, PSCCH resource 3 corresponds to SL-PRS resource 9, PSCCH resource 4 corresponds to SL-PRS resource 10, PSCCH resource 5 corresponds to SL-PRS resource 11, and PSCCH resource 6 corresponds to SL-PRS resource 12.

[0340] For example, based on the first possible implementation method described above, when the SL-PRS is initially transmitted, it is indicated which group of the K groups the PSCCH belongs to (such as group 1), and then in the subsequent retransmission, it is indicated which of the 6 SL-PRS resources corresponding to the PSCCH in group 1 the SL-PRS belongs to. For example, in the subsequent retransmission, it is indicated that the SL-PRS is SL-PRS resource 4. For another example, in the subsequent retransmission, it is indicated that the SL-PRS is the SL-PRS resource corresponding to PSCCH resource 4 in group 1, that is, SL-PRS resource 4.

[0341] Through the above-mentioned first possible implementation method, when there are K groups of one-to-one mapping relationships between PSCCH resources and SL-PRS resources, the position of PSCCH resources and the position of SLPRS resources can be flexibly indicated at the same time, and the number of bits indicated by SCI can be further reduced, thereby reducing signaling overhead.

[0342] As an example, the first possible implementation manner described above can also be expressed by a corresponding formula.

[0343] For example, the number of transmissions of PSCCH and SL-PRS is 1, or the value of sl-MaxNumPerReserve is 1, then the identification of the SL-PRS resource satisfies Formula 9, or in other words, the result of the identification of the SL-PRS resource satisfies Formula 9.

[0344] W1=n ID,1

[0345] Formula 9

[0346] Among them, n ID,1 The value of can be, for example, from 0 to K-1.

[0347] For another example, the number of transmissions of PSCCH and SL-PRS is 2, or the value of sl-MaxNumPerReserve is 2, then the identification of the SL-PRS resource satisfies Formula 10, or in other words, the result of the identification of the SL-PRS resource satisfies Formula 10.

[0348] W1=n ID,1 +n ID,2*N

[0349] Formula 10

[0350] Among them, n ID,2 The value of can be from 0 to n, for example. ID,1 .

[0351] For another example, the number of transmissions of PSCCH and SL-PRS is 3, or the value of sl-MaxNumPerReserve is 3, then the identification of the SL-PRS resource satisfies Formula 11, or in other words, the result of the identification of the SL-PRS resource satisfies Formula 11.

[0352] W1=n ID,1 +n ID,2 *N+n ID,3 *N*N ID

[0353] Formula 11

[0354] Among them, n ID,3 The value of can be from 0 to n, for example. ID,1 .

[0355] Assume N ID =10, then the total number of identifiers that need to be indicated is: N ID +N ID 2 +N ID 3 =(10+10 2 +10 3 )=1110, requiring 14 bits in total. If the above implementation is used, assuming K=2, then the total number of identifiers that need to be indicated is: K+K*N ID +K*N ID 2 =(2+2*10+2*10 2 )=222, requiring 8 bits in total. It can be seen that the implementation method provided by the present application can save signaling overhead.

[0356] In a second possible implementation manner, the indication information indicates the PSCCH resources and the group to which the SL-PRS resources belong. The group to which the SL-PRS resources belong and the PSCCH resources are used to determine the SL-PRS resources.

[0357] Based on this implementation, the indication information may indicate which PSCCH it is and the group to which the PRS belongs (different groups of the same PSCCH correspond to different PRSs). For example, during the initial transmission of the SL-PRS, it indicates which PSCCH it is (the yth PSCCH), and then in subsequent retransmissions, the yth PSCCH is used, and it indicates which group of the K groups is used.

[0358] Take the above example.

[0359] For example, based on the second possible implementation method described above, in the initial transmission of SL-PRS, PSCCH is indicated as PSCCH resource 1, and in subsequent retransmissions, PSCCH resource 1 is used. In the first group of mapping relationships, PSCCH resource 1 corresponds to SL-PRS resource 1, and in the second group of mapping relationships, PSCCH resource 1 corresponds to SL-PRS resource 6. Therefore, in subsequent retransmissions, it can be indicated which group the SL-PRS resource uses. For example, if in subsequent retransmissions, it is indicated that the SL-PRS resource uses the first group, then it can be known that the SL-PRS resource is SL-PRS resource 1; if in subsequent retransmissions, it is indicated that the SL-PRS resource uses the second group, then it can be known that the SL-PRS resource is SL-PRS resource 6.

[0360] Through the above-mentioned second possible implementation method, when there are K groups of one-to-one mapping relationships between PSCCH resources and SL-PRS resources, by limiting the frequency domain position of PSCCH to remain unchanged between multiple retransmissions, the resource positions to be indicated can be further reduced, and then the number of bits indicated by SCI can be further reduced, thereby reducing signaling overhead.

[0361] As an example, the above second possible implementation manner can also be expressed by a corresponding formula.

[0362] For example, the number of transmissions of PSCCH and SL-PRS is 1, or the value of sl-MaxNumPerReserve is 1, then the identification of the SL-PRS resource satisfies Formula 9, or in other words, the result of the identification of the SL-PRS resource satisfies Formula 9.

[0363] For another example, if the number of transmissions of PSCCH and SL-PRS is 2, or the value of sl-MaxNumPerReserve is 2, then the identification of SL-PRS resources satisfies Formula 10, or in other words, the result of the identification of SL-PRS resources satisfies Formula 10. The difference is that, at this time, n ID,1 The value of can be, for example, from 0 to K-1.

[0364] For another example, the number of transmissions of PSCCH and SL-PRS is 3, or the value of sl-MaxNumPerReserve is 3, then the identification of the SL-PRS resource satisfies Formula 12, or in other words, the result of the identification of the SL-PRS resource satisfies Formula 12.

[0365] W1=n ID,1 +n ID,2 *N+n ID,3 *N 2

[0366] Formula 12

[0367] Among them, n ID,3 The value of can be, for example, from 0 to K-1.

[0368] Assume N ID =10, then the total number of identifiers that need to be indicated is: N ID +N ID 2 +N ID 3 =(10+10 2 +10 3 )=1110, requiring 14 bits in total. If the above implementation is used, assuming K=2, then the total number of identifiers that need to be indicated is: K+K 2 *N ID +K 3 =(2+2 2 +2 3 )=13, requiring 4 bits in total. It can be seen that the implementation method provided by the present application can save signaling overhead.

[0369] Another possible situation is that K=1.

[0370] In this case, optionally, the indication information indicates PSCCH resources and SL-PRS resources, including the following implementation methods.

[0371] In a first possible implementation manner, the indication information indicates a mapping relationship, and the mapping relationship is used to determine PSCCH resources and SL-PRS resources.

[0372] For example, the receiving end can obtain the location of the PSCCH resource through blind detection, and then obtain the location of the SL-PRS resource according to the mapping relationship.

[0373] In a second possible implementation manner, the indication information indicates a mapping relationship and a PSCCH resource, and the mapping relationship and the PSCCH resource are used to determine the SL-PRS resource.

[0374] For example, the receiving end can obtain the location of the PSCCH resource through the indication information, and then obtain the location of the SL-PRS resource according to the mapping relationship and the location of the PSCCH resource.

[0375] In a third possible implementation manner, the indication information indicates a mapping relationship and SL-PRS resources, and the mapping relationship and SL-PRS resources are used to determine PSCCH resources.

[0376] For example, the receiving end can obtain the location of the SL-PRS resource through the indication information, and then obtain the location of the PSCCH resource according to the mapping relationship and the location of the SL-PRS resource.

[0377] The above introduces the related schemes of indication information in combination with three schemes.

[0378] Optionally, method 600 further includes: obtaining configuration information, where the configuration information is used to indicate at least one of the following: the number of resources occupied by the control channel, the number of resources occupied by the reference signal, the mapping relationship between the first resource and the second resource, the number of mapping relationships between the first resource and the second resource, the identifier of the first resource, the starting position of the first resource in the time domain, the length of the first resource in the time domain, the ending position of the first resource in the time domain, the offset of the first resource in the frequency domain, the comb tooth size of the first resource in the frequency domain, the identifier of the second resource, the starting position of the second resource in the time domain, the length of the second resource in the time domain, the ending position of the second resource in the time domain, the offset of the second resource in the frequency domain, the comb tooth size of the second resource in the frequency domain, and the maximum number of reservations. In this case, the transmitting end can send the control channel and the reference signal based on the above configuration information.

[0379] It can be understood that in the above embodiments, SL-PRS and PSCCH are mainly used as examples for illustration, and this is not limited to the above. SL-PRS can be replaced by other reference signals, and PSCCH can be replaced by other control channels.

[0380] It can also be understood that in the above embodiments, SL-PRS resources are mentioned many times, which means resources used to transmit SL-PRS. "SL-PRS resources" can be replaced by "second resources". Similarly, PSCCH resources, which means resources used to transmit PSCCH. "PSCCH resources" can be replaced by "first resources".

[0381] It can also be understood that the formulas involved in the various embodiments of the present application are only exemplary descriptions, and do not limit the protection scope of the embodiments of the present application. In the process of calculating the above-mentioned various parameters involved, the calculation can also be performed according to the above formula, or based on the deformation of the above formula, or according to other methods to satisfy the result of the formula calculation.

[0382] It can also be understood that in the embodiments of the present application, the example of the transmitting UE indicating the first resource and the second resource to the receiving UE is mainly used for explanation, and this is not limited. The indication method of the first resource and the second resource proposed in the embodiments of the present application can also be used in the scenario of communication between the network device and the transmitting UE in a scenario with network scheduling. For example, the network device can send indication information to the transmitting UE, and the indication information includes two fields, and the two fields are used to indicate the first resource and the second resource respectively. For another example, the network device can send indication information to the transmitting UE, and the indication information includes a field, and the field is used to indicate the resources of the control channel and the resources of the reference signal.

[0383] It can also be understood that some optional features in the embodiments of the present application may not depend on other features in some scenarios, or may be combined with other features in some scenarios, without limitation.

[0384] It can also be understood that the solutions in the various embodiments of the present application can be used in reasonable combination, and the explanations or descriptions of the various terms appearing in the embodiments can be mutually referenced or explained in the various embodiments, without limitation.

[0385] It can also be understood that in the above-mentioned various method embodiments, the methods and operations implemented by the communication device can also be implemented by components (such as chips or circuits) that can be implemented by the communication device.

[0386] Corresponding to the methods given in the above-mentioned method embodiments, the embodiments of the present application also provide corresponding devices, which include modules for executing the corresponding methods in the above-mentioned method embodiments. The module can be software, hardware, or a combination of software and hardware. It can be understood that the technical features described in the above-mentioned method embodiments are also applicable to the following device embodiments.

[0387] Combine the following Figures 8 to 10 It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the contents not described in detail can be referred to the method embodiment above, and will not be repeated here for the sake of brevity.

[0388] Figure 8 8 is a schematic block diagram of a communication device 800 provided in an embodiment of the present application. The device 800 includes a transceiver unit 810 and a processing unit 820. The transceiver unit 810 can be used to implement corresponding communication functions. The transceiver unit 810 can also be called a communication interface or a communication unit. The processing unit 820 can be used to perform data processing, such as generating an identification of a resource.

[0389] Optionally, the device 800 also includes a storage unit, which can be used to store instructions and / or data. The processing unit 820 can read the instructions and / or data in the storage unit so that the device implements the actions of the terminal device in the aforementioned method embodiments.

[0390] In one design, the device 800 may be the first communication device in the aforementioned embodiment, or may be a component (such as a chip) of the first communication device. The device 800 may implement the steps or processes corresponding to those performed by the first communication device in the above method embodiment, wherein the transceiver unit 810 may be used to perform the transceiver-related operations of the first communication device in the above method embodiment, and the processing unit 820 may be used to perform the processing-related operations of the first communication device in the above method embodiment.

[0391] In one possible implementation, a processing unit 820 is used to determine a first resource and a second resource, the first resource being used to transmit a control channel, and the second resource being used to transmit a reference signal for scheduling the control channel; a transceiver unit 810 is used to send indication information on a first time domain unit, the indication information indicating the first resource and the second resource, the first resource including a resource on a second time domain unit for transmitting a control channel, the second resource including a resource on a first time domain unit for transmitting a reference signal for scheduling a control channel transmitted on the first time domain unit, and / or a resource on a second time domain unit for transmitting a reference signal for scheduling a control channel, wherein the second time domain unit is located after the first time domain unit.

[0392] The device 800 can implement the steps or processes performed by the first communication device in the method embodiment according to the embodiment of the present application. The device 800 may include a method for performing Figure 6 The units of the method executed by the first communication device in the illustrated embodiment.

[0393] In another design, the device 800 may be the second communication device in the aforementioned embodiment, or may be a component (such as a chip) of the second communication device. The device 800 may implement the steps or processes corresponding to those performed by the second communication device in the above method embodiment, wherein the transceiver unit 810 may be used to perform the transceiver-related operations of the second communication device in the above method embodiment, and the processing unit 820 may be used to perform the processing-related operations of the second communication device in the above method embodiment.

[0394] A possible implementation method is that the transceiver unit 810 is used to receive indication information on a first time domain unit, the indication information indicating a first resource and a second resource, the first resource including a resource on the second time domain unit for transmitting a control channel, the second resource including a resource on the first time domain unit for transmitting a reference signal scheduled for a control channel transmitted on the first time domain unit, and / or a resource on the second time domain unit for transmitting a reference signal scheduled for a control channel, wherein the second time domain unit is located after the first time domain unit; the transceiver unit 810 is also used to receive a control channel on the first resource and receive a reference signal scheduled for a control channel on the second resource.

[0395] The device 800 can implement the steps or processes performed by the second communication device in the method embodiment according to the embodiment of the present application. The device 800 may include a method for performing Figure 6 The units of the method executed by the second communication device in the illustrated embodiment.

[0396] A more detailed description of the device 800 can be directly obtained by referring to the relevant description in the above method embodiment, which will not be repeated here.

[0397] It should be understood that the specific process of each unit executing the above corresponding steps has been described in detail in the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0398] It should also be understood that the device 800 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 800 can be specifically a communication device (such as a first communication device, and also such as a second communication device) in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the communication device in the above-mentioned method embodiments. To avoid repetition, it will not be repeated here.

[0399] The device 800 of each of the above schemes has the function of implementing the corresponding steps performed by the communication device (such as the first communication device, and the second communication device) in the above method. The function can be implemented by hardware, or by hardware executing the corresponding software implementation. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the transceiver operations and related processing operations in each method embodiment.

[0400] In addition, the transceiver unit 810 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

[0401] It should be pointed out that Figure 8 The device in the above-mentioned embodiment may be a device, or a chip or a chip system, such as a system on chip (SoC). The transceiver unit may be an input / output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

[0402] Fig. 9 9 is a schematic block diagram of a communication device 900 provided in an embodiment of the present application. The device 900 includes a processor 910, and the processor 910 is coupled to a memory 940. Optionally, the memory 940 is further included, which is used to store computer programs or instructions and / or data. The processor 910 is used to execute the computer programs or instructions stored in the memory 940, or read the data stored in the memory 940, so as to execute the methods in the above method embodiments.

[0403] Optionally, there are one or more processors 910 .

[0404] Optionally, the memory 940 is one or more.

[0405] Optionally, the memory 940 is integrated with the processor 910 or provided separately.

[0406] Alternatively, if Fig. 9 As shown, the device 900 further includes a transceiver 930, which is used to receive and / or send signals. For example, the processor 910 is used to control the transceiver 930 to receive and / or send signals.

[0407] As a solution, the device 900 is used to implement the operations performed by the communication device in each of the above method embodiments.

[0408] For example, the processor 910 is configured to execute a computer program or instruction stored in the memory 940 to implement related operations of the first communication device or the second communication device in each of the above method embodiments.

[0409] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 910 or an instruction in the form of software. The method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 940, and the processor 910 reads the information in the memory 940 and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0410] It should be understood that in the embodiments of the present application, the processor may be one or more integrated circuits for executing related programs to execute the embodiments of the methods of the present application.

[0411] The processor (e.g., processor 910) may include one or more processors and be implemented as a combination of computing devices. The processor may include one or more of the following: a microprocessor, a microcontroller, a digital signal processor (DSP), a digital signal processing device (DSPD), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), a programmable logic device (PLD), a gating logic, a transistor logic, a discrete hardware circuit, a processing circuit or other suitable hardware, firmware and / or a combination of hardware and software for performing the various functions described in the present disclosure. The processor may be a general-purpose processor or a dedicated processor. For example, processor 910 may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data. The central processing unit may be used to enable the device to execute a software program and process data in the software program. In addition, a portion of the processor may also include a non-volatile random access memory. For example, the processor may also store information about the type of device.

[0412] Program in this application is used to refer to software in a broad sense. Non-limiting examples of software include: program code, program, subroutine, instruction, instruction set, code, code segment, software module, application, or software application, etc. The program can be run in a processor and / or computer. So that the device performs various functions and / or processes described in this application.

[0413] The memory (e.g., memory 940) can store data required by the processor (e.g., processor 910) when executing software. The memory can be implemented using any suitable storage technology. For example, the memory can be any available storage medium that can be accessed by the processor and / or computer. Non-limiting examples of storage media include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM), static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct rambus RAM (DR RAM), removable media, optical disk storage, magnetic disk storage media, magnetic storage devices, flash memory, registers, state memory, remote mounted storage, local or remote storage components, or any other medium capable of carrying or storing software, data or information and accessible by a processor / computer. It should be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0414] The memory (e.g., memory 940) and the processor (e.g., processor 910) may be provided separately or integrated together. The memory may be used to connect to the processor so that the processor can read information from the memory and store and / or write information in the memory. The memory may be integrated in the processor. The memory and the processor may be provided in an integrated circuit (e.g., the integrated circuit may be provided in a UE or other network node).

[0415] Fig.101 is a schematic block diagram of a chip system 1000 provided in an embodiment of the present application. The chip system 1000 (or also referred to as a processing system) includes a logic circuit 1010 and an input / output interface 1020 .

[0416] Among them, the logic circuit 1010 can be a processing circuit in the chip system 1000. The logic circuit 1010 can be coupled to a storage unit and call instructions in the storage unit so that the chip system 1000 can implement the methods and functions of each embodiment of the present application. The input / output interface 1020 can be an input / output circuit in the chip system 1000, outputting information processed by the chip system 1000, or inputting data or signaling information to be processed into the chip system 1000 for processing.

[0417] As a solution, the chip system 1000 is used to implement the operations performed by the communication device in the above various method embodiments.

[0418] For example, the logic circuit 1010 is used to implement the processing-related operations performed by the first communication device in the above method embodiment, such as: Figure 6 The processing-related operations performed by the first communication device in the illustrated embodiment; the input / output interface 1020 is used to implement the sending and / or receiving-related operations performed by the first communication device in the above method embodiment, such as, Figure 6 The first communication device in the illustrated embodiment performs operations related to sending and / or receiving.

[0419] For another example, the logic circuit 1010 is used to implement the processing-related operations performed by the second communication device in the above method embodiment, such as: Figure 6 The processing-related operations performed by the second communication device in the embodiment shown; the input / output interface 1020 is used to implement the sending and / or receiving-related operations performed by the second communication device in the above method embodiment, such as Figure 6 The second communication device in the illustrated embodiment performs operations related to sending and / or receiving.

[0420] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by a communication device (such as a first communication device or a second communication device) in the above-mentioned method embodiments are stored.

[0421] An embodiment of the present application further provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a communication device (such as a first communication device or a second communication device) in the above-mentioned method embodiments.

[0422] An embodiment of the present application further provides a communication system, which includes the first communication device and the second communication device in the above embodiments.

[0423] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0424] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0425] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement the solution provided by this application.

[0426] In addition, each functional unit in each embodiment of the present application may be integrated into one unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0427] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0428] When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing computer program instructions on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. For example, the computer can be a personal computer, a server, or a network device, etc. The computer instruction can be stored in a computer-readable storage medium, or transmitted from a computer-readable storage medium to another computer-readable storage medium, for example, the computer instruction can be transmitted from a website site, a computer, a server or a data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. About computer-readable storage medium, it can be described with reference to the above.

[0429] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: include: Determine a first resource and a second resource, wherein the first resource is used to transmit a control channel, and the second resource is used to transmit a reference signal scheduled by the control channel; Indication information is sent on a first time domain unit, the indication information indicating the first resource and the second resource, the first resource including resources on a second time domain unit for transmitting the control channel, the second resource including resources on the first time domain unit for transmitting a reference signal scheduled by the control channel transmitted on the first time domain unit, and / or resources on the second time domain unit for transmitting a reference signal scheduled by the control channel, wherein the second time domain unit is located after the first time domain unit.

2. The method according to claim 1, characterized in that The resources on the second time domain unit used for transmitting the reference signal scheduled by the control channel include: resources on the second time domain unit used for transmitting the reference signal scheduled by the control channel transmitted on the second time domain unit.

3. The method according to claim 1 or 2, characterized in that: The indication information includes a first field and a second field, the first field indicates the first resource, and the second field indicates the second resource.

4. The method according to claim 3, characterized in that The identity of the second resource is determined by at least one of the following parameters: A time domain resource identifier of the second resource in the first time domain unit; A time domain resource identifier of the second resource in the second time domain unit; The number of resources of the second resource in the first time domain unit.

5. The method according to claim 3 or 4, characterized in that: The second field indicates an identifier of the second resource, and the identifier of the second resource satisfies: Wherein, W1 represents the identifier of the second resource, N ID represents the number of the second resource in the time domain unit, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,i Represents the resource identifier for transmitting the reference signal in the (i-1)th second time domain unit, where i is an integer greater than 2 or equal to 2.

6. The method according to any one of claims 3 to 5, characterized in that The identity of the first resource is determined by at least one of the following parameters: A frequency domain starting position of the first resource on the second time domain unit; The number of frequency domain resources of the first resource in the time domain.

7. The method according to any one of claims 3 to 6, characterized in that The first field indicates an identifier of the first resource, and the identifier of the first resource satisfies: Wherein, W2 represents the identifier of the first resource, represents the frequency domain starting position of the first resource on the first of the second time domain units, represents the frequency domain starting position of the first resource in the zth second time domain unit, N subCH represents the number of frequency domain resources of the first resource in the time domain, and z is an integer greater than or equal to 2.

8. The method according to claim 1 or 2, characterized in that: The indication information includes a third field, and the third field indicates the first resource and the second resource.

9. The method according to claim 8, characterized in that The third field is obtained by jointly encoding the identifier of the first resource and the identifier of the second resource, and the resource indication value after the joint encoding is determined by at least one of the following parameters: A time domain resource identifier of the second resource in the first time domain unit; A time domain resource identifier of the second time domain unit of the second resource; The resource quantity of the second resource in the first time domain unit; A frequency domain starting position of the first resource on the second time domain unit; The number of frequency domain resources of the first resource in the time domain; The mapping relationship between the first resource and the second resource, wherein there is at least one mapping relationship between the first resource and the second resource.

10. The method according to claim 8 or 9, characterized in that: The third field is obtained by jointly encoding the identifier of the first resource and the identifier of the second resource, and the resource indication value after the joint encoding satisfies any one of the following: W3=n ID,1 4 or, Wherein, W3 represents the resource indication value after the joint coding, represents the frequency domain starting position of the first resource on the first of the second time domain units, Indicates the starting position of the second time domain unit in the frequency domain, N subCH represents the number of frequency domain resources of the first resource in the time domain, N ID represents the number of the second resource in the time domain unit, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Represents a resource identifier for transmitting the reference signal on the second second time domain unit.

11. The method according to any one of claims 1, 2 or 8, characterized in that: The first resource and the second resource have K groups of mapping relationships, in each group of mapping relationships, positions of the first resources are the same, positions of the second resources are different, and K is an integer greater than 1; The indication information indicates the first resource and the second resource, including: The indication information indicates the group to which the first resource belongs and the second resource, and the group to which the first resource belongs and the second resource are used to determine the first resource; or, The indication information indicates the first resource and the group to which the second resource belongs, and the group to which the second resource belongs and the first resource are used to determine the second resource.

12. The method according to claim 11, characterized in that The identifier of the second resource satisfies any one of the following: W1=n ID,1 W1=n ID,1 +n ID,2 *N W1=n ID,1 +n ID,2 *N+n ID,3 *N*N ID Wherein, W1 represents the identifier of the second resource, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Indicates the resource identifier for transmitting the reference signal on the second second time domain unit, N ID Represents the number of resources of the second resource in the time domain unit.

13. The method according to claim 11, characterized in that The identifier of the second resource satisfies any one of the following: W1=n ID,1 W1=n ID,1 +n ID,2 *N W1=n ID,1 +n ID,2 *N+n ID,3 *N 2 Wherein, W1 represents the identifier of the second resource, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Represents a resource identifier for transmitting the reference signal on the second second time domain unit.

14. The method according to any one of claims 1 to 13, characterized in that The first time domain unit is a time domain unit where the initial transmission resource of the control channel is located, and the first resource is a retransmission resource of the control channel; or, The first time domain unit is a time domain unit where the retransmission resource of the control channel is located, and the first resource is the retransmission resource of the control channel.

15. A communication method, characterized in that: include: Receiving indication information on a first time domain unit, the indication information indicating a first resource and a second resource, the first resource comprising a resource on a second time domain unit for transmitting a control channel, the second resource comprising a resource on the first time domain unit for transmitting a reference signal scheduled by the control channel transmitted on the first time domain unit, and / or a resource on the second time domain unit for transmitting a reference signal scheduled by the control channel, wherein the second time domain unit is located after the first time domain unit; A reference signal scheduled by the control channel is received on the second resource.

16. The method according to claim 15, characterized in that The method further comprises: receiving the control channel on the first resource; or, When determining candidate resources, resources occupied by the control channel received on the first resources are excluded, and / or resources used to transmit a reference signal scheduled by the control channel on the second time domain unit are excluded.

17. The method according to claim 15 or 16, characterized in that The resources on the second time domain unit used for transmitting the reference signal scheduled by the control channel include: resources on the second time domain unit used for transmitting the reference signal scheduled by the control channel transmitted on the second time domain unit.

18. The method according to any one of claims 15 to 17, characterized in that The indication information includes a first field and a second field, the first field indicates the first resource, and the second field indicates the second resource.

19. The method according to claim 18, characterized in that The identity of the second resource is determined by at least one of the following parameters: A time domain resource identifier of the second resource in the first time domain unit; A time domain resource identifier of the second resource in the second time domain unit; The number of resources of the second resource in the first time domain unit.

20. The method according to claim 18 or 19, characterized in that The second field indicates an identifier of the second resource, and the identifier of the second resource satisfies: Wherein, W1 represents the identifier of the second resource, N ID represents the number of the second resource in the time domain unit, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,i Represents the resource identifier for transmitting the reference signal in the (i-1)th second time domain unit, where i is an integer greater than 2 or equal to 2.

21. The method according to any one of claims 18 to 20, characterized in that The identity of the first resource is determined by at least one of the following parameters: A frequency domain starting position of the first resource on the second time domain unit; The number of frequency domain resources of the first resource in the time domain.

22. The method according to any one of claims 18 to 21, characterized in that The first field indicates an identifier of the first resource, and the identifier of the first resource satisfies: Wherein, W2 represents the identifier of the first resource, represents the frequency domain starting position of the first resource on the first of the second time domain units, represents the frequency domain starting position of the first resource in the zth second time domain unit, N subCH represents the number of frequency domain resources of the first resource in the time domain, and z is an integer greater than or equal to 2.

23. The method according to any one of claims 15 to 17, characterized in that The indication information includes a third field, and the third field indicates the first resource and the second resource.

24. The method according to claim 23, characterized in that The third field is obtained by jointly encoding the identifier of the first resource and the identifier of the second resource, and the resource indication value after the joint encoding is determined by at least one of the following parameters: A time domain resource identifier of the second resource in the first time domain unit; A time domain resource identifier of the second time domain unit of the second resource; The resource quantity of the second resource in the first time domain unit; A frequency domain starting position of the first resource on the second time domain unit; The number of frequency domain resources of the first resource in the time domain; The mapping relationship between the first resource and the second resource, wherein there is at least one mapping relationship between the first resource and the second resource.

25. The method according to claim 23 or 24, characterized in that The third field is obtained by jointly encoding the identifier of the first resource and the identifier of the second resource, and the resource indication value after the joint encoding satisfies any one of the following: W3=n ID,1 4 or, Wherein, W3 represents the resource indication value after the joint coding, represents the frequency domain starting position of the first resource on the first of the second time domain units, Indicates the starting position of the second time domain unit in the frequency domain, N subCH represents the number of frequency domain resources of the first resource in the time domain, N ID represents the number of the second resource in the time domain unit, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Represents a resource identifier for transmitting the reference signal on the second second time domain unit.

26. The method according to any one of claims 15 or 16 or 17 or 18 or 23, characterized in that The first resource and the second resource have K groups of mapping relationships, in each group of mapping relationships, positions of the first resources are the same, positions of the second resources are different, and K is an integer greater than 1; The indication information indicates the first resource and the second resource, including: The indication information indicates the group to which the first resource belongs and the second resource, and the group to which the first resource belongs and the second resource are used to determine the first resource; or, The indication information indicates the first resource and the group to which the second resource belongs, and the group to which the second resource belongs and the first resource are used to determine the second resource.

27. The method according to claim 26, characterized in that The identifier of the second resource satisfies any one of the following: W1=n ID,1 W1=n ID,1 +n ID,2 *N W1=n ID,1 +n ID,2 *N+n ID,3 *N*N ID Wherein, W1 represents the identifier of the second resource, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Indicates the resource identifier for transmitting the reference signal on the second second time domain unit, N ID Represents the number of resources of the second resource in the time domain unit.

28. The method according to claim 27, characterized in that The identifier of the second resource satisfies any one of the following: W1=n ID,1 W1=n ID,1 +n ID,2 *N W1=n ID,1 +n ID,2 *N+n ID,3 *N 2 Wherein, W1 represents the identifier of the second resource, n ID,1 Indicates the resource identifier for transmitting the reference signal in the first time domain unit, n ID,2 Indicates the resource identifier of the first second time domain unit for transmitting the reference signal, n ID,3 Represents a resource identifier for transmitting the reference signal on the second second time domain unit.

29. The method according to any one of claims 15 to 28, characterized in that The first time domain unit is a time domain unit where the initial transmission resource of the control channel is located, and the first resource is a retransmission resource of the control channel; or, The first time domain unit is a time domain unit where the retransmission resource of the control channel is located, and the first resource is the retransmission resource of the control channel.

30. A communication device, characterized in that: The method comprises a module or a unit for executing the method according to any one of claims 1 to 29.

31. A communication device, characterized in that: The device comprises a processor, wherein the processor is configured to execute a computer program or instruction stored in a memory so that the device performs the method according to any one of claims 1 to 29.

32. The device according to claim 31, characterized in that The device further comprises the memory and / or the communication interface, wherein the communication interface is coupled to the processor. The communication interface is used to input and / or output information.

33. The device according to claim 31 or 32, characterized in that The device is a chip.

34. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instruction, and when the computer program or instruction is executed on the communication device, the communication device is caused to perform the method according to any one of claims 1 to 29.

35. A computer program product, characterized in that The computer program product comprises a computer program or instructions for performing the method according to any one of claims 1 to 29.

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