Communication method and device

Abstract

The invention provides a communication method and device, and the communication method comprises the steps: receiving at least one piece of control information, each piece of control information being associated with at least one time-frequency resource, and each time-frequency resource corresponding to at least one first resource block. At least one feedback channel is sent on a first frequency domain resource, each feedback channel corresponds to one piece of control information, the first frequency domain resource comprises N first resource blocks and M second resource blocks, each feedback channel occupies at least one first resource block, and the sending power on the first frequency domain resource is smaller than or equal to the maximum sending power. The ratio of the sending power on each second resource block to the sending power on each first resource block in the same resource block set is beta, beta is less than or equal to 1, and N and M are integers greater than or equal to 1. By limiting the ratio of the sending power on the first resource block to the sending power on the second resource block, the sending power on the first resource block is increased, and the detection performance of the feedback channel is improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a communication method and device. Background Art

[0002] In sidelink (SL) communications, enabling unlicensed spectrum is an important evolution direction. In unlicensed spectrum, terminals can use spectrum resources in a competitive manner. One possible way is that the terminal competes for the channel occupancy time (COT) by listening before talking (LBT) and then uses the COT. If the terminal LBT is successful, the terminal can use the COT to send data, and the terminal can also share the COT with other terminals.

[0003] Among them, the terminal device can send feedback information through the physical side link feedback channel (PSFCH), and the feedback information is carried on the dedicated physical resource block (dedicated PRB). However, in the unlicensed spectrum, in the actual feedback process, the receiving end introduces the common physical resource block (common PRB) to occupy the frequency domain resources in order to meet the channel occupancy requirements. However, the common physical resource block will divide the transmission power used for the dedicated physical resource block, which will affect the detection performance of the PSFCH. Summary of the invention

[0004] The present application provides a communication method and apparatus, which can increase the transmission power on the first resource block used to carry feedback information and improve the detection performance of PSFCH.

[0005] In a first aspect, a communication method is provided, which can be executed by a first terminal device, or can also be executed by a chip or circuit used for the first terminal device, which is not limited in the present application. For ease of description, the following description is taken as an example of execution by the first terminal device.

[0006] The method includes: a first terminal device receives at least one control information, each control information is associated with at least one time-frequency resource, and each time-frequency resource corresponds to at least one first resource block. The first terminal device sends at least one feedback channel on the first frequency domain resource, each feedback channel corresponds to a time-frequency resource associated with one control information, the first frequency domain resource includes N first resource blocks and M second resource blocks, each feedback channel occupies at least one first resource block, the transmission power on the first frequency domain resource is less than or equal to the maximum transmission power, the ratio of the transmission power on each second resource block to the transmission power on each first resource block in the same resource block set is β, β is less than or equal to 1, and N and M are integers greater than or equal to 1.

[0007] In an embodiment of the present application, the first resource block is used to carry feedback information in a feedback channel, and the second resource block is used to occupy the channel bandwidth. By limiting the relationship between the transmission power of the second resource block and the first resource block, it is ensured that the first resource block can occupy sufficient transmission power, thereby improving the transmission quality of the feedback channel and thus improving the detection performance of the feedback channel.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: allocating the transmission power of the i-th feedback channel to M second resource blocks and N first resource blocks in the first frequency domain resources, where i is greater than or equal to 1.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power on each first resource block and each second resource block in the first frequency domain resources based on the number of feedback channels T sent, the transmit power of each feedback channel, β, the number N of first resource blocks in the first frequency domain resources, and the number M of second resource blocks in the first frequency domain resources.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the method includes:

[0011] P 1，avg =P-10log 10 (N / T+M×β / T),

[0012] P 2，avg =P-10log 10 (N / (β×T)+M / T),

[0013] or,

[0014] Where P refers to the transmit power of each feedback channel, P 1，avg Refers to the transmit power on each first resource block in the first frequency domain resource, P 2，avg Refers to the transmit power of each second resource block in the first frequency domain resources.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: allocating the transmission power of the i-th feedback channel to a first resource block occupied by the i-th feedback channel, and a second resource block located in the same resource block set as the i-th feedback channel, where i is greater than or equal to 1.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: determining the transmit power on each first resource block occupied by the i-th feedback channel and the transmit power on each second resource block located in the same resource block set as the i-th feedback channel based on the number Ti of feedback channels located in the same resource block set as the i-th feedback channel, the transmit power of the i-th feedback channel, the number ki of first resource blocks occupied by the i-th feedback channel, the number Mi of second resource blocks located in the same resource block set as the i-th feedback channel, and β.

[0017] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0018] P 1，avg (i) = P(i)-10log 10 (ki+Mi×β / Ti),

[0019] P 2，avg (i) = P(i)-10log 10 (ki / β+Mi / Ti),

[0020] or,

[0021] Where P(i) refers to the transmission power of the i-th feedback channel, P 1，avg (i) refers to the transmit power on each first resource block occupied by the i-th feedback channel, P 2，avg (i) refers to the transmit power on each second resource block located in the same resource block set as the i-th feedback channel.

[0022] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power on each first resource block in the first frequency domain resources and the transmit power on each second resource block in the first frequency domain resources based on the maximum transmit power, the number M of all second resource blocks in the first frequency domain resources, the number N of all first resource blocks in the first frequency domain resources and β.

[0023] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0024] P 1，avg =P CMAX -10log 10(N+M×β),

[0025] P 2，avg =P CMAX -10log 10 (N / β+M),

[0026] or,

[0027] Among them, P CMAX Refers to the maximum transmit power, P 1，avg Refers to the transmit power on each first resource block in the first frequency domain resource, P 2，avg Refers to the transmit power on each second resource block in the first frequency domain resources.

[0028] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power on the i-th feedback channel based on the maximum transmit power, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the i-th feedback channel, and β.

[0029] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0030]

[0031] Among them, P CMAX refers to the maximum transmit power, and P(i) refers to the transmit power on the i-th feedback channel.

[0032] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power on the i-th feedback channel based on the maximum transmit power, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the i-th feedback channel, the number Mi of second resource blocks in the same resource block set as the i-th feedback channel, and β.

[0033] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0034]

[0035] Among them, P CMAX refers to the maximum transmit power, and P(i) refers to the transmit power on the i-th feedback channel.

[0036] In combination with the first aspect, in certain implementations of the first aspect, the transmission power on each second resource block and each first resource block does not exceed a first power, and the first power is determined based on a downlink path loss.

[0037] In combination with the first aspect, in some implementations of the first aspect, the method further includes: the power on each second resource block is P1+10log 10 (β), the power on each first resource block is P1, and P1 refers to the first power.

[0038] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmission power of the i-th feedback channel based on the number M of second resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the i-th feedback channel, the first power and β.

[0039] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0040] P(i)=P1+10log 10 (ki+M×β),

[0041] Wherein, P(i) refers to the transmission power on the i-th feedback channel, and P1 refers to the first power.

[0042] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power of the i-th feedback channel based on the number Mi of second resource blocks located in the same resource block set as the i-th feedback channel, the number ki of first resource blocks occupied by the i-th feedback channel, the first power and β.

[0043] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0044] P(i)=P1+10log 10 (ki+Mi×β),

[0045] Wherein, P(i) refers to the transmission power on the i-th feedback channel, and P1 refers to the first power.

[0046] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power on each first resource block based on the maximum transmit power, the first power, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources and β.

[0047] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0048] P 1，avg =min(P CMAX -10log 10 (N+M×β), P1),

[0049] Among them, P CMAX refers to the maximum transmit power, P1 refers to the first power, P 1，avg Refers to the transmit power on each first resource block.

[0050] In combination with the first aspect, in some implementations of the first aspect, the method further includes: determining the transmit power on each second resource block based on the transmit power on each first resource block and β.

[0051] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0052]

[0053] Among them, P 1，avg Refers to the transmit power on each first resource block, P 2，avg Refers to the transmit power on each second resource block.

[0054] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power on the i-th feedback channel based on the maximum transmit power, the first power, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the i-th feedback channel, and β.

[0055] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0056] P(i)=min(P CMAX -10log 10 (N+M×β),P1)+10log 10 (ki+M×β),

[0057] Among them, P CMAX refers to the maximum transmit power, P1 refers to the first power, and P(i) refers to the transmit power on the i-th feedback channel.

[0058] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: determining the transmit power on the i-th feedback channel based on the maximum transmit power, the first power, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the i-th feedback channel, the number Mi of second resource blocks in the same resource block set as the i-th feedback channel, and β.

[0059] In combination with the first aspect, in some implementations of the first aspect, the method further includes:

[0060] P(i)=min(P CMAX -10log 10 (N+M×β),P1)+10log 10 (ki+Mi×β),

[0061] Among them, P CMAX refers to the maximum transmit power, P1 refers to the first power, and P refers to the transmit power on the i-th feedback channel.

[0062] In a second aspect, a communication device is provided, comprising: a transceiver unit, used to receive at least one control information, each control information is associated with at least one time-frequency resource, and each time-frequency resource corresponds to at least one first resource block; a processing unit, used to determine a first frequency domain resource, the first frequency domain resources include N first resource blocks and M second resource blocks, the transmit power on the first frequency domain resources is less than or equal to the maximum transmit power, and the ratio of the transmit power on each second resource block to the transmit power on each first resource block in the same resource block set is β, β is less than or equal to 1, and N and M are integers greater than or equal to 1; the transceiver unit is also used to send at least one feedback channel on the first frequency domain resources, each feedback channel corresponds to a control information, and each feedback channel occupies at least one first resource block.

[0063] The transceiver unit can perform the reception and transmission processing in the aforementioned first aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned first aspect.

[0064] In a third aspect, a communication device is provided, comprising a transceiver, a processor and a memory, wherein the processor is used to control the transceiver to receive and send signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device executes a method in any possible implementation of the first aspect or the second aspect mentioned above.

[0065] Optionally, the number of the processors is one or more, and the number of the memories is one or more.

[0066] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0067] Optionally, the communication device further includes a transmitter (transmitter) and a receiver (receiver).

[0068] In a fourth aspect, a communication system is provided, comprising a first terminal device; the first terminal device is used to execute the method in any possible implementation manner of the first aspect.

[0069] In a fifth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program or code, and when the computer program or code is run on a computer, the computer executes the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0070] In the sixth aspect, a chip is provided, comprising at least one processor, wherein the at least one processor is coupled to a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device equipped with the chip system executes the method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0071] The chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0072] In a seventh aspect, a computer program product is provided, comprising: a computer program code, which, when executed by a device, enables the device to execute the method in the above-mentioned first aspect or any possible implementation manner of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application.

[0074] Figure 2 It is a schematic diagram of interleaving at 30kHz subcarrier spacing provided in an embodiment of the present application.

[0075] Figure 3 This is a schematic diagram of transmitting PSFCH provided in an embodiment of the present application.

[0076] Figure 4 This is a schematic diagram of transmitting PSFCH provided in an embodiment of the present application.

[0077] Figure 5 It is a flow chart of the communication method 400 provided in an embodiment of the present application.

[0078] Figure 6 It is a schematic diagram of the structure of the communication device 1000 provided in an embodiment of the present application.

[0079] Figure 7 It is a schematic diagram of the structure of the communication device 2000 provided in an embodiment of the present application.

[0080] Figure 8 It is a schematic diagram of the structure of the chip system 3000 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0081] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0082] The technical solution provided in this application can be applied to various communication systems, such as: 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 or other communication systems.

[0083] 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, which is in a non-mobile state because it is located on the roadside and does not need to consider mobility; base station-type RSU, which 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.

[0084] In addition, the technical solution provided in this application can also be used in indoor commercial scenarios, such as communication from mobile phones to smart screens, communication from mobile phones to VR glasses, etc.

[0085] 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.

[0086] The terminal device may be a device that provides voice / data to users, for example, a handheld device or a vehicle-mounted device with a wireless connection function. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (public land mobile The terminal device in the embodiment of the present application may be a terminal device, a whole vehicle, or a UE. The terminal device may also be an on-board unit (OBU), an on-board module, a T-box, or other on-board communication module. The terminal device may also be a roadside unit (RSU). The terminal device may also be a chip, which may be built into the vehicle or built into the above-mentioned on-board communication module. The terminal device may also be a chip system, which may be composed of chips or may include chips and other discrete devices.

[0087] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is 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-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that 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 vital sign monitoring.

[0088] 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 radio access network device, such as a base station. The network device in the embodiment of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station may broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), 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. A base station may 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 may also refer to a communication module, modem or chip used to be set in the aforementioned equipment or device. The base station may 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, and a device that performs the base station function in a future communication system. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form used by the network equipment.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] The network equipment and terminal devices 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 scenarios in which the network equipment and terminal devices are located are not limited in the embodiments of the present application. In addition, the scenarios for the embodiments of the present application may not include network equipment.

[0093] It should be noted that the technical solution of the present application is mainly used in sidelink transmission scenarios, and the frequency bands used include but are not limited to unlicensed spectrum, and the unlicensed spectrum includes but is not limited to the frequency band near 2.4 GHz and the frequency band near 5.8 GHz, etc. In an embodiment of the present application, the terminal device and the access network equipment can use unlicensed spectrum resources for wireless communication (for example, transmitting uplink information or transmitting downlink information). The communication system can adopt licensed-assisted access (LAA), dual connectivity (DC), unlicensed assisted access (standalone) technology, etc. In addition, in an embodiment of the present application, the terminal device and the terminal device can use unlicensed spectrum resources for wireless communication, such as sidelink unlicense (SL-U).

[0094] Combine the following Figure 1 A communication system applicable to an embodiment of the present application is briefly introduced as follows.

[0095] Figure 1 Schematic diagram of a wireless communication system applicable to an embodiment of the present application. Figure 1 As shown, the wireless communication system may include at least one terminal device, such as Figure 1 UE1, UE2, UE3 shown. Optionally, the wireless communication system may also include at least one network device, such as Figure 1Optionally, the wireless communication system may not include a network device.

[0096] The network device and the terminal device can communicate with each other. For example, the network device and the terminal device can communicate with each other through the Uu interface, and the link between the network device and the terminal device can be recorded as the Uu link. Figure 1 As shown in (a) in FIG. 1 , the network device and UE1 can communicate directly, such as Figure 1 As shown in (b), the network device and UE1 can also communicate through UE2; similarly, the network device and UE2 can communicate directly, and the network device and UE2 can also communicate through UE1. It can be understood that the Uu link represents a connection relationship between the terminal device and the network device, which is a logical concept rather than a physical entity. The main link is only named for distinction, and its specific naming does not limit the scope of protection of this application.

[0097] Terminal devices can also communicate with each other. For example, terminal devices can communicate directly with each other, such as Figure 1 As shown in (a) to (c) of FIG. 1 , UE1 and UE2 can communicate directly. For another example, terminal devices can communicate with each other through other devices, such as network devices or terminal devices, such as Figure 1 As shown in (a), UE1 and UE2 can communicate through network devices. Figure 1 As shown in (d), UE1 and UE2 can communicate through UE3. The interface for communication between terminal devices can be recorded as a proximity-based services communication 5 (PC5) interface, the link for communication between terminal devices can be recorded as a side link SL, and the communication between terminal devices can also be recorded as SL communication. The side link can also be called an edge link or a side link, etc. It can be understood that the side link represents a connection relationship between terminal devices and terminal devices, which is a logical concept rather than a physical entity. The side link is only a name for distinction, and its specific name does not limit the scope of protection of this application.

[0098] As an example, SL communication between terminal devices can be used in vehicle networking or intelligent transportation systems (ITS), such as the V2X communication mentioned above, and can also be used in indoor commercial communication scenarios.

[0099] Optionally, the SL communication between terminal devices can be performed under network coverage or without network coverage. Figure 1 As shown in (a) to (b) in FIG. 1 , UE1 and other UEs can communicate under network coverage; or, as shown in FIG. Figure 1 As shown in (c) to (d) in the figure, UE1 and other UEs can communicate outside the network coverage (out-of-coverage).

[0100] Optionally, the time and frequency resources used in SL communication between terminal devices may be configured or scheduled by network equipment, or may be independently selected by the terminal devices without restriction.

[0101] Understandably, Figure 1 The simplified schematic diagram is only used for the sake of understanding. The wireless communication system may further include other network devices or other terminal devices, or may not include network devices. Figure 1 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.

[0102] It should be noted that the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application. As long as it is possible to communicate according to the method provided by the embodiments of the present application by running a program that records the code of the method provided by the embodiments of the present application, for example, the execution subject of the method provided by the embodiments of the present application may be a terminal device, or a functional module in the terminal device that can call and execute the program.

[0103] To facilitate understanding of the embodiments of the present application, a brief description of the terms or technologies involved in the present application is first given.

[0104] 1. Licensed and unlicensed spectrum

[0105] The spectrum used by wireless communication systems is divided into two categories, licensed spectrum and unlicensed spectrum. In the licensed spectrum, UE can use spectrum resources based on the scheduling of network equipment without competing for spectrum resources. In the unlicensed spectrum, communication devices use spectrum resources in a competitive manner. The unlicensed spectrum can also be called a shared spectrum. SL communication on the unlicensed spectrum can be called the sidelink of the unlicensed spectrum, or sidelink unlicense (SL-U), and NR cellular communication on the unlicensed spectrum can be called NR-U. The bandwidth of the unlicensed spectrum is a set of defined frequencies, which may vary slightly in different regions and countries due to policy and regulatory requirements. Exemplarily, the unlicensed spectrum includes 900 MHz (such as all or part of 839–928 MHz), 2.4 GHz (such as all or part of 2401–2495 MHz), 3.6 GHz (such as all or part of 3655–3695 MHz), 5 GHz (such as all or part of 5030–5990 MHz), or 6 GHz (such as all or part of 5945–7115 MHz).

[0106] Currently, 3GPP has defined two frequency bands associated with V2X, namely n38 (2570MHz–2620MHz) and n47 (5855MHz–5925MHz). For n38, when it is used to support V2X SL services, it is dedicated to NR V2X in a specific area. The n47 band is generally known as the Intelligent Transportation System (ITS) band, and no related network equipment has been deployed on this band yet.

[0107] In addition to the two frequency bands mentioned above, R18 is currently conducting research on the technology of SL system in shared spectrum, including n46, n96 and n102 frequency bands. In this shared frequency band, due to the existence of various types of terminal devices, in order to avoid collision and interference between different users, the transmitting node needs to use spectrum resources in a competitive manner, for example, by competing for channels in the listen-before-talk (LBT) manner. Before accessing the channel and starting to send data, the UE needs to sense whether the channel is idle. If the channel has been idle for a certain period of time, it can occupy the channel. If the channel is not idle, it needs to wait for the channel to become idle again before occupying the channel.

[0108] 2. Unlicensed spectrum sidelink SL-U

[0109] SL-U mainly refers to SL transmission in unlicensed spectrum. For unlicensed spectrum, the standard introduces two access mechanisms including Type 1 LBT and Type 2 LBT. Among them, Type 1 LBT is used in the scenario of preempting COT, and LBT is required, that is, monitoring is required before transmission. The monitoring here can be energy detection, that is, detecting energy at 9μs. If the threshold is exceeded, the channel is busy; conversely, if the threshold is not exceeded, it means that the channel is idle. Type 2 LBT is used to share the COT grabbed by other UEs through Type 1 LBT. For example, UE1 uses Type 1 LBT to grab a transmission opportunity within a period of time, such as COT. In addition to the transmission time occupied by itself, it can instruct other UEs to use Type 2 LBT to access the remaining transmission opportunities in the COT occupied by UE1.

[0110] It should be noted that Type 2LBT further includes Type 2A LBT, Type 2B LBT and Type 2C LBT. Type 2A LBT means occupying the channel after an interval of 25μs after the end of other transmissions, that is, if the channel is found to be idle within 25μs through sensing the channel, the channel can be occupied. Type 2B LBT means occupying the channel after an interval of 16μs after the end of other transmissions. The difference from Type 2A LBT is that the duration of sensing the channel differs by 9μs (25μs-16μs=9μs), that is, the duration of a sensing time slot. Type 2C LBT means occupying the channel for transmission after an interval of less than 16μs after the end of other transmissions (and no channel monitoring is required), but the transmission duration cannot exceed 584μs.

[0111] 3. SL resource pool

[0112] In NR, SL transmission is based on resource pools. Each resource pool contains one or more subchannels. The frequency domain resources (i.e., the number of physical resource blocks (PRBs)) occupied by each subchannel in the same resource pool are the same, while the frequency domain resources occupied by each subchannel in different resource pools may be different.

[0113] Optionally, the resource pool may also include time slots in the time domain for SL transmission.

[0114] It should be noted that in the embodiment of the present application, the method of determining resources in the resource selection window can be performed on one resource pool or on multiple resource pools, and the present application does not impose any restrictions on this.

[0115] It should be understood that a resource pool can be a physical concept or a logical concept. A resource pool includes multiple physical resources, any of which is used to transmit data. Each UE needs to determine a resource from the resource pool when transmitting data. The resource determination process includes the following two situations:

[0116] (1) The UE is controlled by the network device and determines a resource from the resource pool for data transmission according to the instruction information of the network device. This is also called Mode 1.

[0117] (2) The UE autonomously selects a resource from the resource pool for data transmission, also known as Mode 2, that is, the UE has the opportunity to autonomously determine resource determination and resource allocation. The UE can exclude some occupied or highly interfered resources based on sensing and select idle or less interfered resources for transmission.

[0118] 4. Time domain unit and frequency domain unit

[0119] Data or information can be carried through time and frequency resources.

[0120] 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).

[0121] In the embodiment of the present application, the time domain unit may be a radio frame (RF), a subframe, a frame, a half subframe or a half frame, a slot, a mini-slot, a partial slot, or an orthogonal frequency division multiplexing (OFDM) symbol, etc.; or, the time domain unit may also be a collection of one or more time domain resources, for example, the time domain unit is one or more OFDM symbols in a time slot, for example, the number of the one or more is 6, 7, 12 or 14, etc. One or more time domain units may be continuous or discrete in time.

[0122] Optionally, in an embodiment of the present application, the time domain resource may also be referred to as a sub-time domain unit, or, "time domain resource" and "sub-time domain unit" may be the same concept and may be interchangeable.

[0123] 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*2u kHz, the duration of a time slot is 2 -u ms,u=0,1,2,….

[0124] 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 block set (RB set), or a resource pool, or a bandwidth, or a bandwidth part (BWP), or a carrier, or a channel, or an interlace, etc.

[0125] 5. Power spectral density (PSD)

[0126] The power of a signal per unit spectrum is called power spectral density.

[0127] 6. COT

[0128] Channel occupancy time (COT) refers to the transmission of a UE on one or more channels after executing the channel access process. If a UE obtains the right to use a channel through LBT, the UE can occupy the channel for a period of time, which can be called COT. COT can be a concept of time, that is, a continuous transmission time seized through LBT; it can also be a concept of time-frequency resources, which occupy one or more channels in the frequency domain and the above-mentioned continuous transmission time in the time domain.

[0129] Exemplarily, UE2 obtains COT through LBT, that is, UE2 can transmit on the COT, and UE2 can also share the COT resources with other UEs (such as UE1). It should be understood that COT sharing has corresponding requirements, that is, UE2 can share COT with UE 1 only when certain conditions are met. For example, UE 1 is the receiving end of the data channel (physical sidelink shared channel (PSSCH)) sent by UE 2, and UE 1's data (PSSCH) is transmitted to UE 2. It should be understood that the conditions that need to be met for COT sharing may have other manifestations, which will not be repeated here.

[0130] 7. Hybrid Automatic Repeat Request HARQ

[0131] During the data transmission process, transmission bit errors or packet loss may occur. The HARQ mechanism can improve the robustness of data transmission.

[0132] In the HARQ mechanism, after the transmitter sends data to the receiver, the receiver can send HARQ feedback to the transmitter to indicate whether the data is received correctly. For example, if the receiver receives the data correctly, the receiver sends a positive acknowledgment (ACK) to the transmitter, and the transmitter considers that the data is received correctly based on the ACK and does not need to be retransmitted; if the receiver does not receive the data correctly, the receiver sends a negative acknowledgment (NACK) to the transmitter, and the transmitter considers that the data is not received correctly based on the NACK. Optionally, the receiver can also send a negative acknowledgment to the transmitter when the data is not received correctly, and not send an acknowledgment to the transmitter when the data is received correctly.

[0133] 8. Conflict information

[0134] In one possible implementation, when transmitting PSSCH, the time-frequency resources occupied by two PSSCHs may overlap with each other, thereby interfering with each other and affecting the demodulation performance of the two PSSCHs. Under certain conditions, a receiving UE of one PSSCH will send conflict indication information to a sending UE of a PSSCH with a lower layer 1 priority (L1 priority). Optionally, after receiving the conflict indication information, the sending UE will trigger resource reselection.

[0135] In another possible implementation, the terminal device finds that it cannot perform reception on the time-frequency resource where the PSSCH to be received in the future is located (if it needs to send on this time-frequency resource). If certain conditions are met, the terminal device will send conflict indication information to the sending UE of the PSSCH. Optionally, after receiving the conflict indication information, the sending UE will trigger resource reselection.

[0136] It should be understood that the conditions required to send the conflict indication information are prior art, and specific reference may be made to protocol 38.213, which will not be described in detail here.

[0137] 9. Physical Side Feedback Channel (PSFCH)

[0138] The PSFCH in this application is used to carry feedback information.

[0139] Optionally, the feedback information may be HARQ response information. Optionally, it may include a positive response or a negative response. Optionally, the HARQ response may be indication information of one state, or indication information of two states, or indication information of multiple bits, which is not limited in the present application.

[0140] Optionally, the feedback information may be response indication information for the transmitted beam. Exemplarily, the response indication information for the transmitted beam includes: beam index information, time domain resource indication information, frequency domain resource indication information, whether the beam associated with the PSFCH meets the requirements, whether the beam associated with the PSFCH is used, and / or information on the signal quality of the beam.

[0141] Optionally, the feedback information may also be conflict indication information.

[0142] PSFCH occupies several symbols or a complete time slot. For example, it occupies 1, 2, 3, 4, 7 or 12, 14 symbols. In one example, in the time slot with PSFCH, the second to last and third OFDM symbols carry PSFCH. The signal on the third to last symbol is a repetition of the signal on the second to last symbol, so that the receiving terminal device can perform AGC adjustment.

[0143] The above briefly describes the terms involved in this application, which will not be repeated in the following embodiments. In addition, the above description of terms is only for the sake of ease of understanding, and does not limit the protection scope of the embodiments of this application.

[0144] For unlicensed spectrum, terminal devices can use spectrum resources in a competitive manner. For example, terminal devices compete for channels by using the listen-before-talk (LBT) method, and then use the channels. If the LBT of the terminal device is successful, the terminal device can use the channel to send data, and the terminal device can also share the channel with other terminal devices. In the HARQ mechanism, after the transmitter sends data to the receiver, the receiver can send HARQ feedback to the transmitter through the PSFCH to indicate whether the data is received correctly.

[0145] However, when sending PSFCH on unlicensed spectrum, it is necessary to meet a certain channel bandwidth. For example, in some cases, the terminal device needs to ensure that its transmission occupies at least 80% of the bandwidth on one or more corresponding 20MHz channels. In order to meet the above-mentioned occupied channel bandwidth (OCB) requirements, in one possible implementation, interlace is introduced as a form of occupying frequency domain resources. Figure 2 30kHz subcarrier spacing provided in the embodiment of the present application is a schematic diagram of interleaving. Figure 2As shown, interleaving indicates that the frequency domain resources occupied by the transmitted signal will present a comb-tooth structure. Figure 2 In , one interlace includes PRBs with the same number. In addition, Figure 2 The resource block set (RB set) in a channel refers to a set of RBs that can be used to transmit signals in a channel, and other RBs in the channel may be used to protect bandwidth, etc.

[0146] Figure 3 is a schematic diagram of transmitting PSFCH provided in an embodiment of the present application, such as Figure 3 As shown, after receiving the physical sidelink shared channel (PSSCH) sent by UE1-UE3, PSFCH is sent to UE1-UE3. Each transmitted PSFCH occupies several common physical resource blocks (common PRBs) and one or more dedicated physical resource blocks (dedicated PRBs) in the frequency domain, and the common physical resource blocks do not include the above-mentioned one or more dedicated physical resource blocks. Among them, one or more dedicated physical resource blocks carry ACK / NACK information (such as a cyclic shift of the base sequence), which is used for the transmitter of PSSCH to demodulate the ACK / NACK information; the common physical resource blocks can carry any content and are not used to demodulate the ACK / NACK information. For example, the common physical resource blocks can carry some redundant signals / filling signals and / or copies of the content on the dedicated physical resource blocks. The common physical resource blocks are used to occupy the channel bandwidth to meet the OCB requirements to occupy the channel. It should be noted that different feedback channels in this application may use common common physical resource blocks (such as Figure 3 Each PSFCH in the RB set occupies all common physical resource blocks in RB set 1), may use completely different common physical resource blocks, or may use partially overlapping common physical resource blocks.

[0147] It should be understood that Figure 3 As an example only, the dedicated physical resource block is used to carry feedback information, and the dedicated physical resource block may carry ACK / NACK information, and may also carry other information, for example, the dedicated physical resource block may also carry conflict indication information, beam-related information, etc., which is not limited in this application. At this time, the common physical resource block may carry some redundant signals / filler signals and / or a copy of the content on the dedicated physical resource block.

[0148] The common physical resource blocks include physical resource blocks that make the transmitted PSFCH meet the OCB requirements. Exemplarily, the physical resource blocks that make the transmitted PSFCH meet the OCB requirements include part or all of the physical resource blocks in an interlace, which may also be referred to as a common interlace. The common interlace is predefined / (pre)configured. Exemplarily, when the dedicated resource blocks occupied by the feedback channel are located in RB set 1, the physical resource blocks that make the transmitted PSFCH channel meet the OCB requirements include part or all of the physical resource blocks in the common interlace on RB set 1.

[0149] Optionally, the common physical resource block may include part or all of the physical resource blocks in an interlace, which may also be referred to as a common interlace. In one possible implementation, when a physical resource block in a common interlace is close to a dedicated physical resource block (e.g., within 1 MHz of the dedicated physical resource block), the physical resource block will not be used as a common physical resource block.

[0150] Optionally, in a possible implementation manner, the common physical resource blocks also include physical resource blocks additionally sent by the terminal device.

[0151] Figure 4 is a schematic diagram of transmitting PSFCH provided in an embodiment of the present application, Figure 4 The terminal device in the middle sends an additional physical resource block. Figure 4 As shown, after receiving the physical sidelink shared channel (PSSCH) sent by UE1-UE3, PSFCH is sent to UE1-UE3. COT includes two resource block sets (RB sets). The terminal device transmits PSFCH on RB set1. RB set1 includes common physical resource blocks and dedicated physical resource blocks that enable PSFCH to meet OCB requirements. In addition, considering that the PSFCH occasion in RB set 2 may not be used by UE, the common physical resource blocks in RB set1 can only occupy RB set 1 and cannot occupy RB set 2, that is, they are not enough to occupy COT. In order to occupy COT, the terminal device sends additional physical resource blocks on RB set2. Taking the sending of PSFCH to UE1 as an example, the dedicated physical resource block 11 in RB set1 is used to carry feedback information, the common physical resource blocks 11, 21, and 31 in RB set1 are used to meet the OCB requirements, and the common physical resource blocks 12, 22, and 32 in RB set2 are used to occupy COT. Among them, the information carried on the dedicated physical resource blocks and the common physical resource blocks can be found in Figure 3 The relevant description in will not be repeated here.

[0152] It is understandable that the UE can determine on its own whether it needs to send additional physical resource blocks, or send additional physical resource blocks according to the received indication information, and this application does not limit this. Since sending a PSFCH needs to be sent on both the public physical resource blocks and the dedicated physical resource blocks, the public physical resource blocks will divide the power on the dedicated physical resource blocks, resulting in a reduction in the transmission power on the dedicated physical resource blocks used to carry feedback information, affecting the detection performance of the PSFCH.

[0153] In view of this, the present application provides a communication method and device, which increases the transmission power on the dedicated physical resource block used to carry feedback information by controlling the power ratio on each common physical resource block and each dedicated physical resource block, thereby improving the detection performance of PSFCH.

[0154] To facilitate understanding of the embodiments of the present application, the following points are explained:

[0155] First, in this application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0156] Second, in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Where a, b and c can be single or multiple, respectively.

[0157] Third, in the present application, "first", "second" and various numerical references are used to distinguish for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, different messages are distinguished, rather than used to describe a specific order or sequence. It should be understood that the objects described in this way can be interchanged where appropriate so as to be able to describe solutions other than the embodiments of the present application.

[0158] Fourth, in this application, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0159] Fifth, in this application, "used for indication" may include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used for indicating A, it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.

[0160] Sixth, in this application, "protocol" may refer to a standard protocol in the field of communications, such as a 5G protocol, a new radio (NR) protocol, and related protocols used in future communication systems, which are not limited in this application. "Predefined" may include pre-definition, such as protocol definition. "Preconfiguration" may be implemented by pre-saving corresponding codes, tables, or other methods that can be used to indicate relevant information in the device, and this application does not limit its specific implementation method.

[0161] Seventh, in this application, "communication" can also be described as "data transmission", "information transmission", "data processing", etc. "Transmission" includes "sending" and "receiving".

[0162] The communication method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. The embodiment provided by the present application can be applied to any communication scenario where a transmitting device and a receiving device communicate, such as the above Figure 1 In the communication system shown.

[0163] Figure 5 It is a flow chart of the communication method 200 provided in an embodiment of the present application, wherein the first terminal device is the transmitter of PSFCH, the second terminal device is the receiver of PSFCH, the first resource block is used to carry feedback information, and the second resource block is used to occupy the channel bandwidth to meet the requirements of OCB. Exemplarily, the first resource block may be the above-mentioned dedicated physical resource block (dedicated PRB), and the second resource block may be the above-mentioned common physical resource block (common PRB). In the following embodiments, taking the first resource block carrying HARQ information or conflict indication information as an example, it should not limit the protection scope of the present application.

[0164] S510: The first terminal device receives at least one control information from the second terminal device, and each control information is associated with at least one time-frequency resource.

[0165] It should be understood that the control information is associated with at least one time-frequency resource means that the control information can schedule or reserve at least one time-frequency resource. The time-frequency resource scheduled by the control information is located in the same time slot as the control information in the time domain, and the subchannel occupied in the frequency domain can be obtained through the FRA (Frequency resource assignment) field in the control information; the time-frequency resource reserved by the control information is located in the time slot after the time slot where the control information is located, and the subchannel occupied by it can be obtained through the FRA (Frequency resource assignment) field, and the occupied time slot can be obtained through the TRA (Time resource assignment) field and / or the reservation period (Resource reservation period) field.

[0166] It should be understood that each PSFCH corresponds to a time-frequency resource. When the PSSCH on the time-frequency resource scheduled by the control information is sent to the first terminal device, the first terminal device transmits HARQ information to the PSSCH transmitting device (i.e., the second terminal device) through the PSFCH corresponding to the time-frequency resource to indicate whether the PSSCH is received successfully, wherein the data is carried in the PSSCH, and the successful reception of the data means the successful reception of the PSSCH, and the failure to receive the data means the failure to receive the PSSCH. At this time, the first terminal device determines the first resource block occupied by the PSFCH through the time-frequency resource scheduled by the control information.

[0167] When a conflict occurs on the time-frequency resources reserved by the control information, the first terminal device sends a conflict indication message via the PSFCH corresponding to the time-frequency resources scheduled by the control information or the reserved time-frequency resources where the conflict occurs. At this time, the first terminal device determines the first resource block occupied by the PSFCH via the time-frequency resources scheduled by the control information or the reserved time-frequency resources where the conflict occurs.

[0168] It should be understood that each PSFCH occupies at least one first resource block, and the first resource block is used to carry feedback information (HARQ information and / or conflict indication information in this embodiment). Each feedback channel corresponds to a time-frequency resource, which can also be interpreted as the first resource block occupied by the feedback channel is determined according to the time-frequency resource, that is, the first resource block occupied by the feedback channel and the time-frequency resource have a preset mapping relationship.

[0169] In one possible implementation, a conflict occurs on the time-frequency resources, that is, the time-frequency resources overlap with the time-frequency resources occupied by another PSSCH. Specifically, when transmitting PSSCH, the time-frequency resources occupied by two PSSCHs may overlap with each other, thereby interfering with each other and affecting the demodulation performance of the two PSSCHs. Under certain conditions, one of the PSSCH receiving terminals and devices (i.e., the first terminal device) will send conflict indication information to the sending UE (second terminal device) of the PSSCH with a lower layer 1 priority (L1 priority). Optionally, after receiving the conflict indication information, the sending UE will trigger resource reselection.

[0170] In another possible implementation, a conflict occurs on the time-frequency resources, that is, the first terminal device finds that it cannot perform reception on the time-frequency resources where the PSSCH to be received in the future is located (if it needs to send on this time-frequency resource). When certain conditions are met, the first terminal device will send conflict indication information to the sending UE (second terminal device) of the PSSCH. Optionally, after receiving the conflict indication information, the sending UE will trigger resource reselection.

[0171] It should be understood that the conditions required to send the conflict indication information are prior art, and specific reference may be made to protocol 38.213, which will not be described in detail here.

[0172] It should be understood that each feedback channel carries HARQ information or conflict indication information. In other words, at least one first resource block occupied by each feedback channel may carry all HARQ information or all conflict indication information; all first resource blocks occupied by all feedback channels may carry all HARQ information, may carry all conflict indication information, or may carry part of HARQ information and part of conflict indication information, which is not limited in this application.

[0173] S520, the first terminal device determines a first frequency domain resource, and the first frequency domain resource is used to send a PSFCH. The first frequency domain resource includes N first resource blocks and M second resource blocks. The ratio of the transmit power on each second resource block to the transmit power on each first resource block in the same resource block set is β, β is less than or equal to 1, and N and M are integers greater than or equal to 1.

[0174] The N first resource blocks are used to carry feedback information carried in the feedback channel (in this embodiment, HARQ information and / or conflict indication information). The first resource block occupied by each feedback channel is determined by the time-frequency resources corresponding to the feedback channel.

[0175] In a possible implementation manner, the M second resource blocks are all used to ensure that the sending of the PSFCH meets the OCB requirement.

[0176] In a possible implementation, some of the M second resource blocks are used to make the transmission of the PSFCH meet the OCB requirement, and other resource blocks in the M second resource blocks except for the above-mentioned part of the resource blocks have other functions, for example, for occupying the COT, etc., see Figure 4 Related description in .

[0177] In addition, the transmit power on the first frequency domain resource is less than or equal to the maximum transmit power. It should be understood that the maximum transmit power is expressed as P in the protocol. CMAX , P CMAX It is determined by the terminal device according to the parameters specified in the protocol or the (pre)configured parameters.

[0178] It should be noted that since the transmit power has multiple forms of expression, there are differences in mathematical expression between the multiple forms of expression. In the present application, there is a first relationship between the transmit power on the second resource block and the first resource block. For the convenience of expression, when the transmit power of the second resource block and the first resource block are both expressed as linear values ​​(in units of W or mW), the ratio of the transmit power of the second resource block to the first resource block is β. When the transmit power of the first resource block and the second resource block is expressed in other mathematical forms, the relationship between the transmit power of the first resource block and the second resource block is equivalently replaced. For example, when the transmit power of the first resource block and the second resource block is expressed in logarithmic form (exemplarily in units of dB), the difference between the transmit power of the second resource block and the first resource block is less than 0 (the difference is 10log 10 (β)), those skilled in the art should understand that this simple mathematical transformation is also within the protection scope of the present application.

[0179] Wherein, β is a value that remains unchanged for a certain period of time, and β may be a value predefined or (pre) configured in the first terminal device, and the present application does not limit the source of β. Predefined refers to protocol provisions, and (pre) configuration includes system configuration and factory settings.

[0180] Since the first frequency domain resource may include resource blocks in different resource block sets, the implementation of this application stipulates that the transmit power of each second resource block and each first resource block in the same resource block set satisfies the ratio relationship of β. It should be understood that in one possible implementation, the transmit power of each second resource block and each first resource block in the first frequency domain resource satisfies the ratio relationship of β, and at this time, the transmit power of each second resource block and each first resource block in the same resource block set naturally also satisfies the ratio relationship of β. In another possible implementation, the transmit power of each second resource block and each first resource block in the same resource block set satisfies the ratio relationship of β, but the transmit power of each second resource block and the first resource block in different resource block sets does not satisfy the ratio relationship of β. Exemplarily, the ratio of the transmit power on each second resource block in RB set1 to the transmit power on each first resource block in RB set1 is β, but the ratio of the transmit power on each second resource block in RB set1 to the transmit power on each first resource block in RB set2 is not β.

[0181] It should be understood that when setting the value of β, it should first be ensured that the transmission in each resource block set meets the OCB requirement, that is, the transmission in each resource block set occupies at least 80% of the bandwidth of the channel corresponding to the resource block set. It should be understood that β can be predefined, (pre) configured, or determined by the terminal device itself.

[0182] In order to transmit the feedback channel, the first terminal device needs to determine the transmit power on the first resource block and the second resource block.

[0183] For ease of description, the number of feedback channels is set to T, where T is an integer greater than or equal to 1.

[0184] It should be noted that the unit of power in the following calculation formula is dB (dBW or dBmW). The power formula in this application can also be a linear value (W or mW) or other units. The mathematical conversion between different units is well known to technical personnel in this field. Therefore, changes in units (such as converting dB into a linear value) or conversions in other mathematical expressions for the following calculation formula should be within the scope of protection of this application.

[0185] Method 1: According to the prior art, the number T of feedback channels to be sent and the transmission power P of each feedback channel are determined, and then the transmission power on each first resource block and each second resource block is determined.

[0186] It should be noted that the feedback channel to be sent in the embodiment of the present application is the feedback channel determined to be sent, and is also the feedback channel actually sent.

[0187] The transmission power of each feedback channel is allocated to M second resource blocks and N first resource blocks in the first frequency domain resources, wherein the number of first resource blocks occupied by each feedback channel may be the same or different.

[0188] Specifically, the transmission power on each first resource block and each second resource block in the first frequency domain resources is determined based on the number of feedback channels T sent, the transmission power P of each feedback channel, β, the number N of first resource blocks in the first frequency domain resources, and the number M of second resource blocks in the first frequency domain resources.

[0189] It should be understood that after the feedback channel to be sent is determined, all first resource blocks occupied by the feedback channel to be sent, that is, the first resource blocks included in the first frequency domain resources, can naturally be determined. All second resource blocks in the first frequency domain resources include physical resource blocks for making the transmission of PSFCH meet the OCB requirements, and optionally, other physical resource blocks that the terminal device needs to send additionally.

[0190] In a possible implementation, the transmission power of each feedback channel is allocated to M second resource blocks and N first resource blocks in the first frequency domain resources, wherein the number of first resource blocks occupied by each feedback channel may be the same or different.

[0191] Exemplarily, the transmit power P on each first resource block in the first frequency domain resource is 1，avg and the transmission power P on each second resource block in the first frequency domain resource 2，avg The following relations are satisfied:

[0192]

[0193]

[0194] or,

[0195] In addition, when the number of first resource blocks occupied by each feedback channel is the same, i.e., k, the above formula can be equivalently expressed as:

[0196]

[0197]

[0198] or,

[0199] In a possible implementation, the transmit power of each feedback channel is first summed to obtain the total transmit power, and then the power is allocated to the first resource block and the second resource block respectively according to the proportional factor β. 1，avgand the transmission power P on each second resource block in the first frequency domain resource 2，avg The following relations are satisfied:

[0200] P 1，avg =P+10log 10 (T)-10log 10 (n+M×β), (7)

[0201]

[0202] or

[0203] In addition, when the number of first resource blocks occupied by each feedback channel is the same, i.e., k, the above formula can be equivalently expressed as:

[0204] P 1，avg =P+10log 10 (T)-10log 10 (k×T+M×β), (10)

[0205]

[0206] or,

[0207] Furthermore, the transmission power P on the N first resource blocks 1，N and the transmit power P on the M second resource blocks 2，M The following relations are satisfied:

[0208] P 1，N =P 1，avg +10log 10 (N), (13)

[0209] P 2，M =P 2，avg +10log 10 (M). (14)

[0210] Method 2: According to the prior art, the number T of feedback channels to be sent and the transmission power P of each feedback channel are determined, and then the transmission power on each first resource block and each second resource block is determined.

[0211] Specifically, the transmit power on each first resource block occupied by the i-th feedback channel and the transmit power on each second resource block located in the same resource block set as the i-th feedback channel are determined according to the number Ti of feedback channels located in the same resource block set as the i-th feedback channel, the transmit power P of the i-th feedback channel, the number ki of first resource blocks occupied by the i-th feedback channel, the number Mi of second resource blocks located in the same resource block set as the i-th feedback channel, and β.

[0212] It should be understood that after determining the feedback channel to be sent, the first terminal device can determine all first resource blocks occupied by the feedback channel to be sent, that is, the first resource blocks included in the first frequency domain resources. All second resource blocks in the first frequency domain resources include physical resource blocks for making the transmission of PSFCH meet the OCB requirements, and optionally, other physical resource blocks that the first terminal device needs to send additionally.

[0213] In a possible implementation, the transmission power of the i-th feedback channel is allocated to a first resource block occupied by the i-th feedback channel and a second resource block located in the same resource block set as the i-th feedback channel, where i is greater than or equal to 1.

[0214] It should be understood that being located in the same resource block set as the i-th feedback channel means being located in the same resource block set as the first resource block occupied by the i-th feedback channel.

[0215] Exemplarily, the transmit power P on each first resource block occupied by the i-th feedback channel is 1，avg (i) and the transmit power P on each second resource block in the same resource block set as the i-th feedback channel 2，avg (i) The following relationship is satisfied:

[0216]

[0217]

[0218] or,

[0219] By performing the above operation on each feedback channel, the transmission power of each first resource block and each second resource block can be obtained.

[0220] In a possible implementation, the transmit power of each feedback channel in a resource block set is first summed to obtain the total transmit power in the resource block set, and then the power of the first resource block and the second resource block in the resource block set are respectively allocated according to the proportional factor β. It should be understood that the above resource block set is the resource block set where the first resource block occupied by the i-th feedback channel is located.

[0221] Exemplarily, the transmit power P on each first resource block occupied by the i-th feedback channel is 1，avg (i) and the transmit power P on each second resource block in the same resource block set as the i-th feedback channel 2，avg (i) The following relationship is satisfied:

[0222] P 1，avg (i) = P + 10log 10(Ti)-10log 10 (ki×Ti+Mi×β), (18)

[0223]

[0224] or,

[0225] By performing the above operation on each feedback channel / each resource block set, the transmission power of each first resource block and each second resource block can be obtained.

[0226] Furthermore, the transmission power P of the ki first resource blocks occupied by the i-th feedback channel is 1，k (i) The transmit power P of the Mi second resource blocks in the same resource block set as the i-th feedback channel 2，Mi (i) The following relationship is satisfied:

[0227] P 1，k (i) = P 1，avg (i)+10log 10 (k), (21)

[0228] P 2，Mi (i) = P 2，avg (i)+10log 10 (Mi). (22)

[0229] Method three: first determine the transmission power on each first resource block and second resource block, and then determine the transmission power on each feedback channel.

[0230] Scenario 1: There is no need to consider power limitation based on downlink path loss (for example, the first terminal device is outside the coverage of the network device).

[0231] At this time, the first terminal device determines the number T of feedback channels to be sent by itself, and T is less than or equal to the maximum number of PSFCHs that the terminal device can send simultaneously.

[0232] It should be understood that after determining the feedback channel to be sent, the first terminal device can determine all first resource blocks occupied by the feedback channel to be sent, that is, the first resource blocks included in the first frequency domain resources. All second resource blocks in the first frequency domain resources include physical resource blocks for making the transmission of PSFCH meet the OCB requirements, and optionally, may also include other physical resource blocks that the first terminal device needs to send additionally.

[0233] Specifically, according to the maximum transmission power P CMAX, the number M of all second resource blocks in the first frequency domain resources, the number N of all first resource blocks in the first frequency domain resources and β determine the transmit power on each first resource block in the first frequency domain resources and the transmit power on each second resource block in the first frequency domain resources.

[0234] For example, the maximum transmission power P CMAX The power of the first resource block and the second resource block is allocated according to the proportional factor β. At this time, the transmission power P on each first resource block in the first frequency domain resource is 1，avg and the transmission power P on each second resource block in the first frequency domain resource 2，avg The following relations are satisfied:

[0235] P 1，avg =P CMAX -10log 10 (N+M×β), (23)

[0236]

[0237] or,

[0238] Furthermore, the total transmission power P on the N first resource blocks 1，N and the total transmit power P on the M second resource blocks 2，M The following relations are satisfied:

[0239] P 1，N =P 1，avg +10log 10 (N), (26)

[0240] P 2，M =P 2，avg +10log 10 (M). (27)

[0241] At this time, the transmit power on each feedback channel can also be obtained.

[0242] In a possible implementation, according to the maximum transmission power P CMAX , the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number ki and β of first resource blocks occupied by the i-th feedback channel, determine the transmit power on the i-th feedback channel.

[0243] Exemplarily, the transmit power P(i) on the i-th feedback channel satisfies the following relationship:

[0244]

[0245] In a possible implementation, according to the maximum transmission power PCMAX , the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the i-th feedback channel, the number Mi of second resource blocks in the same resource block set as the i-th feedback channel and β, determine the transmit power on the i-th feedback channel.

[0246] Exemplarily, the transmission power P(i) on the i-th feedback channel satisfies the following relationship:

[0247]

[0248] Scenario 2: Power based on downlink path loss needs to be considered, for example, the first terminal device is within the coverage of the network device. It should be understood that in order to avoid interference with the transmission of the network device, the transmission power on each resource block should not exceed the power P1 determined based on the downlink path loss.

[0249] In one possible implementation, P1 is the value specified in the protocol. PSFCH，one P PSFCH，one .P PSFCH，one It is determined by the first terminal device according to predefined or (pre) configured parameters (including parameters related to downlink path loss).

[0250] Case 2-1: If the formula in Case 2-1 is to be used for power allocation, one of the following conditions must be met.

[0251] (1) The number of feedback channels that need to be sent, i.e., scheduled, does not exceed the maximum number of PSFCHs that can be sent simultaneously by the first terminal device, and the number of N occupied by all feedback channels that need to be sent is total The first resource block and all M total The second resource block satisfies:

[0252] P1+10log 10 (N total +M total ×β)≤P CMAX (30)

[0253] It should be understood that M total The second resource blocks include physical resource blocks that enable the feedback channel to be sent to meet the OCB requirement, and optionally, may also include physical resource blocks that the first terminal device needs to additionally send.

[0254] It should be understood that at this time, the terminal device will send all feedback channels that need to be sent, that is, the feedback channels that need to be sent are all feedback channels to be sent, and M=M total , N=N total .

[0255] (2) The number of feedback channels that need to be sent, i.e., scheduled, exceeds the maximum number of PSFCHs that can be simultaneously sent by the first terminal device. The first terminal device determines at least one feedback channel in order of priority of the feedback channels from high to low. The determined feedback channels occupy N total The first resource block and all M total The second resource block satisfies:

[0256] P1+10log 10 (N total +M total ×β)≤P CMAX (31)

[0257] It should be understood that M total The second resource blocks include physical resource blocks that enable the determined at least one feedback channel to meet the OCB requirement, and optionally, may also include physical resource blocks that the first terminal device needs to additionally send.

[0258] It should be understood that at this time, the terminal device will send the determined at least one feedback channel, that is, the determined at least one feedback channel is the feedback channel to be sent, and M=M total , N=N total At this time, the number of feedback channels to be sent is less than or equal to the number of feedback channels that need to be sent.

[0259] In one possible implementation, when determining at least one feedback channel based on the priority of the feedback channel, the terminal device will first consider the priority of each feedback channel in the PSFCH carrying HARQ information, and then consider the priority of each feedback channel in the PSFCH carrying conflict indication information.

[0260] In case 2-1, the power on each first resource block is P1, and the power on each second resource block is:

[0261] P 2，avg =P1+10log 10 (β). (32)

[0262] In a possible implementation, the transmit power of the ith feedback channel is determined according to the number M of second resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the ith feedback channel, the first power and β.

[0263] Exemplarily, the transmit power P(i) of the i-th feedback channel satisfies the following relationship:

[0264] P(i)=P1+10log 10 (ki+M×β). (33)

[0265] In a possible implementation, the transmit power of the i-th feedback channel is determined based on the number Mi of second resource blocks located in the same resource block set as the i-th feedback channel, the number ki of first resource blocks occupied by the i-th feedback channel, the first power and β.

[0266] Exemplarily, the transmit power P(i) of the i-th feedback channel satisfies the following relationship:

[0267] P(i)=P1+10log 10 (ki+Mi×β). (34)

[0268] Case 2-2: If the formula in Case 2-2 is to be used for power allocation, one of the following conditions must be met.

[0269] (1) The number of feedback channels that need to be sent, i.e., scheduled, does not exceed the maximum number of PSFCHs that can be sent simultaneously by the first terminal device, and the number of N occupied by all feedback channels that need to be sent is total The first resource block and all M total The second resource block satisfies:

[0270] P1+10log 10 (N total +M total ×β)>P CMAX (35)

[0271] It should be understood that M total The second resource blocks include physical resource blocks that enable the feedback channel to be sent to meet the OCB requirement, and optionally, may also include physical resource blocks that the terminal device needs to send additionally.

[0272] (2) The number of feedback channels that need to be sent, i.e., scheduled, exceeds the maximum number of PSFCHs that can be simultaneously sent by the first terminal device. The first terminal device determines at least one feedback channel in order of priority of the feedback channels from high to low. The determined feedback channels occupy N total The first resource block and all M total The second resource block satisfies:

[0273] P1+10log 10 (N total +M total ×β)>P CMAX (36)

[0274] It should be understood that M total The second resource blocks include physical resource blocks that enable the determined at least one feedback channel to meet the OCB requirement, and optionally, may also include physical resource blocks that the first terminal device needs to additionally send.

[0275] In scenario 2-2, the first terminal device first determines the feedback channels to be sent. Specifically, the first terminal device determines the number T of feedback channels to be sent according to the order of PSFCH priority from high to low, so that:

[0276]

[0277] Among them, when 1≤j≤8, L j is the number of PSFCHs with priority value j that carry HARQ information; when j>8, L j It is the number of PSFCHs with a priority value of j-8 that carry conflict indication information.

[0278] The definition of J is as follows: J is the maximum value that satisfies the following formula:

[0279] P1+10log 10 (N total (q)+M total (q)×β)≤g CMAX , (38)

[0280]

[0281] Otherwise, J is equal to 0.

[0282] It should be understood that when J is given, q feedback channels arranged in descending order of priority can be obtained according to the relationship between q and J, and q and J satisfy the relationship of the above formula (39). total(q) The first resource blocks are the first resource blocks occupied by the q feedback channels; total(q) The second resource blocks include physical resource blocks that enable q feedback channels to meet the OCB requirement, or, alternatively, M total(q) The second resource blocks may also include physical resource blocks that the first terminal device needs to send additionally.

[0283] In one possible implementation, the priorities of the feedback channels are arranged from high to low, which means that the first terminal device first arranges the feedback channels carrying HARQ information from high to low priority, and then arranges the feedback channels carrying conflict indication information from high to low priority.

[0284] It should be understood that after determining the feedback channel to be sent, the first terminal device can determine all first resource blocks occupied by the feedback channel to be sent, that is, the first resource blocks included in the first frequency domain resources. All second resource blocks in the first frequency domain resources include physical resource blocks for the transmission of PSFCH to meet the OCB requirements; optionally, other physical resource blocks that need to be additionally sent by the first terminal device may also be included. At this time, the number of feedback channels to be sent is less than or equal to the number of feedback channels that need to be sent.

[0285] Specifically, according to the maximum transmission power P CMAX , a first power P1, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources and β, determine the transmit power on each first resource block.

[0286] Exemplarily, the transmit power P on each first resource block is 1 , avg The following relations are satisfied:

[0287] P 1，avg =min(P CMAX -10log 10 (N+M×β), P1). (40)

[0288] The transmit power on each second resource block is determined according to the transmit power on each first resource block and β.

[0289] Exemplarily, the transmission power P on each second resource block is 2，avg The following relations are satisfied:

[0290]

[0291] In a possible implementation, according to the maximum transmission power P CMAX , the first power P1, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number k of first resource blocks occupied by each feedback channel and β, determine the transmit power on each feedback channel.

[0292] Exemplarily, the transmit power P on each feedback channel satisfies the following relationship:

[0293] P = min(P CMAX -10log 10 (N+M×β),P1)+10log 10 (k+M×β). (42)

[0294] In a possible implementation, according to the maximum transmission power P CMAX, the first power P1, the number M of second resource blocks in the first frequency domain resources, the number N of first resource blocks in the first frequency domain resources, the number ki of first resource blocks occupied by the i-th feedback channel, the number Mi of second resource blocks in the same resource block set as the i-th feedback channel and β, determine the transmit power on the i-th feedback channel.

[0295] Exemplarily, the transmit power P(i) on the i-th feedback channel satisfies the following relationship:

[0296] P(i)=min(P CMAX -10log 10 (N+M×β),P1)+10log 10 (ki+Mi×β). (43)

[0297] In the embodiment of the present application, the distance between the first resource block and the second resource block in the frequency domain may be greater than or equal to 1 MHz, or may be less than 1 MHz. When the distance between the first resource block and the second resource block in the frequency domain is less than 1 MHz, the transmission power limitation caused by the PSD limitation needs to be considered.

[0298] In a possible implementation, the transmit power on each first resource block is less than a first threshold, where the first threshold is based on a maximum power density P per MHz. PSD , the bandwidth X(s) occupied by the first resource block in the sth 1 MHz, the bandwidth Y(s) occupied by the second resource block in the sth 1 MHz, the subcarrier spacing Δf and β. Wherein, X(s), Y(s) and Δf are all in MHz.

[0299] For example, the first threshold value P limit1 The following relations are satisfied:

[0300] P limit1 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 (12×Δf). (44)

[0301] In a possible implementation, the transmission power of the first resource block occupied by the i-th feedback channel is less than a second threshold, and the second threshold is based on the number ki of the first resource blocks occupied by the i-th feedback channel, the maximum power density P per MHz, and the maximum power density P per MHz. PSD , the bandwidth X(s) occupied by the first resource block within the s-th 1 MHz, the bandwidth Y(s) occupied by the second resource block within the s-th 1 MHz, and the subcarrier spacing Δf and β.

[0302] Exemplarily, the second threshold value P limit2 The following relations are satisfied:

[0303] P limit2 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 (ki×12×Δf). (45)

[0304] In a possible implementation, the transmission power of the i-th feedback channel is less than a third threshold, and the third threshold is based on the number ki of the first resource blocks occupied by the i-th feedback channel, the maximum power density P per MHz, and the maximum power density P per MHz. PSD , the bandwidth X(s) occupied by the first resource block within the s-th 1 MHz, the bandwidth Y(s) occupied by the second resource block within the s-th 1 MHz, the subcarrier spacing Δf, the number Mi of second resource blocks in the resource block set where the i-th feedback channel is located, and β.

[0305] Exemplarily, the third threshold value P limit3 The following relations are satisfied:

[0306] P limit3 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 ((ki+Mi×β)×12×Δf). (46)

[0307] In a possible implementation, the transmission power of the i-th feedback channel is less than a fourth threshold, and the fourth threshold is based on the number ki of the first resource blocks occupied by the i-th feedback channel, the maximum power density P per MHz, and the maximum power density P per MHz. PSD , the bandwidth X(s) occupied by the first resource block within the s-th 1 MHz, the bandwidth Y(s) occupied by the second resource block within the s-th 1 MHz, the subcarrier spacing Δf, the number M of second resource blocks in the first frequency domain resources and β.

[0308] Exemplarily, the fourth threshold value P limit4 The following relations are satisfied:

[0309] P limit4 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 ((ki+M×β)×12×Δf). (47)

[0310] It should be understood that when calculating the threshold of the transmit power on the first resource block, a window with a length of 1 MHz will slide on the frequency domain resources, and max(X(s)+Y(s)×β) refers to the maximum value calculated according to X+Y×β in any 1 MHz window, and X and Y are in the same window.

[0311] S530: The first terminal device sends at least one feedback channel to the second terminal device on the first frequency domain resources.

[0312] The embodiment of the present application takes into account the limitation of the maximum power density per MHz in the channel on the transmission power of the feedback channel, thereby improving the reliability of the calculated first resource block and the second resource block.

[0313] The embodiment of the present application increases the ratio of the transmission power on the first resource block to the transmission power on the second resource block, and provides a specific power allocation method to increase the power on the resource block carrying the feedback channel, thereby enhancing the detection performance on the feedback channel.

[0314] It should be understood that the first relationship can also be an equivalent description that the ratio of the power on each second resource block to each first resource block is β, and the equivalent description of the first relationship in the embodiment of the present application should be within the protection scope of the present application. For example, the ratio of the power on each first resource block to each second resource block is α, α=1 / β, and the corresponding formula can be obtained by replacing β in the above formula with 1 / α and undergoing a series of mathematical transformations, which will not be repeated in this application.

[0315] Combination of the above Figures 1 to 5 , describes in detail the communication method side embodiment of the present application, and will be combined with Figure 6 and Figure 7 , describes in detail the communication device side embodiment of the present application. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0316] Figure 6 1 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application. Figure 6 As shown, the device 1000 may include a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 may communicate with the outside, the processing unit 1020 is used for data processing, and the transceiver unit 1010 may also be called a communication interface or a transceiver unit.

[0317] In one possible design, the device 1000 can implement steps or processes corresponding to those performed by the first terminal device in the above method embodiment, wherein the processing unit 1020 is used to perform processing-related operations of the first terminal device in the above method embodiment, and the transceiver unit 1010 is used to perform transceiver-related operations of the first terminal device in the above method embodiment.

[0318] In another possible design, the device 1000 may implement steps or processes corresponding to those performed by the second terminal device in the above method embodiment, wherein the transceiver unit 1010 is used to perform transceiver-related operations of the second terminal device in the above method embodiment, and the processing unit 1020 is used to perform processing-related operations of the second terminal device in the above method embodiment.

[0319] It should be understood that the device 1000 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 merged 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 1000 can be specifically the transmitting end in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the transmitting end in the above-mentioned method embodiment, or the device 1000 can be specifically the receiving end in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the receiving end in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.

[0320] The device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the sending end in the above-mentioned method, or the device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the receiving end in the above-mentioned method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned 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, respectively performing the transceiver operations and related processing operations in each method embodiment.

[0321] In addition, the transceiver unit may also be a transceiver circuit (for example, it may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit. Figure 6 The device in the embodiment may be a receiving end or a transmitting end in the foregoing embodiment, or may be 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.

[0322] Figure 72 is a schematic block diagram of a communication device 2000 provided in an embodiment of the present application. Figure 7 As shown, the device 2000 includes a processor 2010 and a transceiver 2020. The processor 2010 and the transceiver 2020 communicate with each other through an internal connection path, and the processor 2010 is used to execute instructions to control the transceiver 2020 to send signals and / or receive signals.

[0323] Optionally, the device 2000 may further include a memory 2030, and the memory 2030 communicates with the processor 2010 and the transceiver 2020 through an internal connection path. The memory 2030 is used to store instructions, and the processor 2010 may execute the instructions stored in the memory 2030.

[0324] In a possible implementation manner, the device 2000 is used to implement various processes and steps corresponding to the first terminal device in the above method embodiment.

[0325] In another possible implementation manner, the device 2000 is used to implement various processes and steps corresponding to the second terminal device in the above method embodiment.

[0326] It should be understood that the device 2000 can be specifically the transmitting end or the receiving end in the above embodiment, or can be a chip or a chip system. Correspondingly, the transceiver 2020 can be the transceiver circuit of the chip, which is not limited here. Specifically, the device 2000 can be used to execute the various steps and / or processes corresponding to the transmitting end or the receiving end in the above method embodiment.

[0327] Optionally, the memory 2030 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type. The processor 2010 may be used to execute instructions stored in the memory, and when the processor 2010 executes instructions stored in the memory, the processor 2010 is used to execute the various steps and / or processes of the above-mentioned method embodiment corresponding to the transmitting end or the receiving end.

[0328] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of 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 a processor for execution. The software module can be located in a storage medium mature 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 a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0329] It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The processor in the embodiment of the present application can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined to perform. The software module can be located in a mature storage medium in the field 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 a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0330] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0331] Figure 8 is a schematic block diagram of a chip system 3000 provided in an embodiment of the present application. Figure 8 As shown, the chip system 3000 (or may also be called a processing system) includes a logic circuit 3010 and an input / output interface (input / output interface) 3020.

[0332] Among them, the logic circuit 3010 can be a processing circuit in the chip system 3000. The logic circuit 3010 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 3000 can implement the methods and functions of each embodiment of the present application. The input / output interface 3020 can be an input / output circuit in the chip system 3000, outputting information processed by the chip system 3000, or inputting data or signaling information to be processed into the chip system 3000 for processing.

[0333] As a solution, the chip system 3000 is used to implement the operations performed by the terminal device in the above method embodiments.

[0334] For example, the logic circuit 3010 is used to implement the processing-related operations performed by the first terminal device in the above method embodiment, such as Figure 5 The processing-related operations performed by the first terminal device in the embodiment shown; the input / output interface 3020 is used to implement the sending and / or receiving-related operations performed by the first terminal device in the above method embodiment, such as Figure 5 The first terminal device in the illustrated embodiment performs operations related to sending and / or receiving.

[0335] For another example, the logic circuit 3010 is used to implement the processing-related operations performed by the second terminal device in the above method embodiment, such as Figure 5 The processing-related operations performed by the second terminal device in the embodiment shown; the input / output interface 3020 is used to implement the sending and / or receiving-related operations performed by the second terminal device in the above method embodiment, such as Figure 5 The second terminal device in the illustrated embodiment performs operations related to sending and / or receiving.

[0336] The embodiment of the present application further provides a computer-readable storage medium on which are stored computer instructions for implementing the methods executed by a terminal device (such as a first terminal device or a second terminal device) in the above-mentioned method embodiments.

[0337] The present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a terminal device (such as a first terminal device or a second terminal device) in the above-mentioned method embodiments.

[0338] An embodiment of the present application further provides a communication system, which includes the first terminal device and the second terminal device in the above embodiments.

[0339] 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.

[0340] 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.

[0341] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0342] In the several embodiments provided in the present application, it should be understood that the disclosed systems, 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 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. Another point is that 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.

[0343] The units described 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 achieve the purpose of the solution of this embodiment.

[0344] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0345] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0346] 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: Receive at least one control information, each of the control information is associated with at least one time-frequency resource, and each of the time-frequency resources corresponds to at least one first resource block; At least one feedback channel is sent on the first frequency domain resources, each of the feedback channels corresponds to a time-frequency resource associated with the control information, the first frequency domain resources include N first resource blocks and M second resource blocks, each of the feedback channels occupies at least one first resource block, the transmit power on the first frequency domain resources is less than or equal to the maximum transmit power, the ratio of the transmit power on each of the second resource blocks to the transmit power on each of the first resource blocks in the same resource block set is β, β is less than or equal to 1, and N and M are integers greater than or equal to 1.

2. The method according to claim 1, characterized in that The method further comprises: Allocate the transmission power of the i-th feedback channel to the M second resource blocks and the N first resource blocks in the first frequency domain resources, where i is greater than or equal to 1.

3. The method according to claim 2, characterized in that The method comprises: Determine the transmit power on each of the first resource blocks and each of the second resource blocks in the first frequency domain resources based on the number T of the feedback channels sent, the transmit power of each of the feedback channels, β, the number N of the first resource blocks in the first frequency domain resources, and the number M of the second resource blocks in the first frequency domain resources.

4. The method according to claim 3, characterized in that The method comprises: P 1，avg =P-10log 10 (N / T+M×β / T), P 2，avg =P-10log 10 (N / (β×T)+M / T), or, Wherein, P refers to the transmission power of each feedback channel, P 1，avg refers to the transmit power on each of the first resource blocks in the first frequency domain resources, P 2，avg Refers to the transmission power of each of the second resource blocks in the first frequency domain resources.

5. The method according to claim 1, characterized in that The method further comprises: The transmission power of the i-th feedback channel is allocated to the first resource block occupied by the i-th feedback channel and the second resource block located in the same resource block set as the i-th feedback channel, where i is greater than or equal to 1.

6. The method according to claim 5, characterized in that The method comprises: The transmit power on each of the first resource blocks occupied by the i-th feedback channel and the transmit power on each of the second resource blocks located in the same resource block set as the i-th feedback channel are determined according to the number Ti of feedback channels located in the same resource block set as the i-th feedback channel, the transmit power of the i-th feedback channel, the number ki of the first resource blocks occupied by the i-th feedback channel, the number Mi of the second resource blocks located in the same resource block set as the i-th feedback channel, and β.

7. The method according to claim 6, characterized in that The method comprises: P 1，avg (i)=P(i)-10log 10 (ki+Mi×β / Ti), P 2，avg (i)=P(i)-10log 10 (and / β+Mi / Ti), or, Wherein, P(i) refers to the transmission power of the i-th feedback channel, P 1，avg (i) refers to the transmission power of each of the first resource blocks occupied by the i-th feedback channel, P 2，avg (i) refers to the transmission power of each of the second resource blocks located in the same resource block set as the i-th feedback channel.

8. The method according to claim 1, characterized in that The method further comprises: The transmit power on each of the first resource blocks in the first frequency domain resources and the transmit power on each of the second resource blocks in the first frequency domain resources are determined according to the maximum transmit power, the number M of all the second resource blocks in the first frequency domain resources, the number N of all the first resource blocks in the first frequency domain resources and β.

9. The method according to claim 8, characterized in that The method comprises: P 1，avg =P CMAX -10log 10 (N+M×β), P.S 2，avg JP CMAX -10log 10 (N / β+M), or, Among them, P CMAX refers to the maximum transmit power, P 1，avg refers to the transmit power on each of the first resource blocks in the first frequency domain resources, P 2，avg Refers to the transmission power on each of the second resource blocks in the first frequency domain resources.

10. The method according to claim 1, 8 or 9, characterized in that: The method further comprises: Determine the transmit power on the i-th feedback channel based on the maximum transmit power, the number M of the second resource blocks in the first frequency domain resources, the number N of the first resource blocks in the first frequency domain resources, the number ki of the first resource blocks occupied by the i-th feedback channel and β.

11. The method according to claim 10, characterized in that The method comprises: Among them, P CMAX refers to the maximum transmission power, and P(i) refers to the transmission power on the i-th feedback channel.

12. The method according to claim 1, 8 or 9, characterized in that: The method further comprises: The transmit power on the i-th feedback channel is determined based on the maximum transmit power, the number M of the second resource blocks in the first frequency domain resources, the number N of the first resource blocks in the first frequency domain resources, the number ki of the first resource blocks occupied by the i-th feedback channel, the number Mi of the second resource blocks in the same resource block set as the i-th feedback channel, and β.

13. The method according to claim 12, characterized in that The method comprises: Among them, P CMAX refers to the maximum transmission power, and P(i) refers to the transmission power on the i-th feedback channel.

14. The method according to claim 1, characterized in that The transmission power of each of the second resource blocks and each of the first resource blocks does not exceed a first power, and the first power is determined based on a downlink path loss.

15. The method according to claim 14, characterized in that The method comprises: The power of each of the second resource blocks is P1+10log 10 (β), the power on each of the first resource blocks is P1, and P1 refers to the first power.

16. The method according to claim 14 or 15, characterized in that The method also includes: determining the transmission power of the i-th feedback channel according to the number M of the second resource blocks in the first frequency domain resources, the number ki of the first resource blocks occupied by the i-th feedback channel, the first power and β.

17. The method according to claim 16, characterized in that The method comprises: P(i)=P1+10log 10 (ki+M×β), Wherein, P(i) refers to the transmission power on the i-th feedback channel, and P1 refers to the first power.

18. The method according to claim 14 or 15, characterized in that The method also includes: determining the transmission power of the i-th feedback channel based on the number Mi of the second resource blocks located in the same resource block set as the i-th feedback channel, the number ki of the first resource blocks occupied by the i-th feedback channel, the first power and β.

19. The method according to claim 18, characterized in that The method comprises: P(i)=P1+10log 10 (ki+Mi×β), Wherein, P(i) refers to the transmission power on the i-th feedback channel, and P1 refers to the first power.

20. The method according to claim 14, characterized in that The method comprises: The transmit power on each of the first resource blocks is determined according to the maximum transmit power, the first power, the number M of the second resource blocks in the first frequency domain resources, the number N of the first resource blocks in the first frequency domain resources and β.

21. The method according to claim 20, characterized in that The method comprises: P 1，avg =min(P CMAX -10log 10 (N+M×β),P1), Among them, P CMAX refers to the maximum transmission power, P1 refers to the first power, P 1，avg Refers to the transmit power on each of the first resource blocks.

22. The method according to claim 20 or 21, characterized in that The method comprises: The transmit power on each of the second resource blocks is determined according to the transmit power on each of the first resource blocks and β.

23. The method according to claim 22, characterized in that The method comprises: Among them, P 1，avg Refers to the transmit power on each of the first resource blocks, P 2，avg Refers to the transmit power on each of the second resource blocks.

24. The method according to any one of claims 20 to 23, characterized in that The method further comprises: Determine the transmit power on the i-th feedback channel based on the maximum transmit power, the first power, the number M of the second resource blocks in the first frequency domain resources, the number N of the first resource blocks in the first frequency domain resources, the number ki of the first resource blocks occupied by the i-th feedback channel and β.

25. The method according to claim 24, characterized in that The method comprises: P(i)=min(P CMAX -10log 10 (N+M×β),P1)+10log 10 (ki+M×β), Among them, P CMAX refers to the maximum transmission power, P1 refers to the first power, and P(i) refers to the transmission power on the i-th feedback channel.

26. The method according to any one of claims 20 to 23, characterized in that The method further comprises: The transmit power on the i-th feedback channel is determined based on the maximum transmit power, the first power, the number M of the second resource blocks in the first frequency domain resources, the number N of the first resource blocks in the first frequency domain resources, the number ki of the first resource blocks occupied by the i-th feedback channel, the number Mi of the second resource blocks in the same resource block set as the i-th feedback channel, and β.

27. The method according to claim 26, characterized in that The method comprises: P(i)=min(P CMAX -10log 10 (N+M×β),P1)+10log 10 (ki+Mi×β), Among them, P CMAX refers to the maximum transmission power, P1 refers to the first power, and P(i) refers to the transmission power on the i-th feedback channel.

28. A communication device, characterized in that: The method comprises modules or units for executing the method according to any one of claims 1 to 27.

29. A communication device, characterized in that: The communication device comprises a processor, wherein the processor is coupled to a memory, wherein the memory stores instructions, and when the instructions are executed by the processor, the communication device performs the method according to any one of claims 1 to 27.

30. A communication system, characterized in that: The method comprises a first terminal device, wherein the first terminal device is configured to execute the method according to any one of claims 1 to 27.

31. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a computer program, and when the computer program is run on a computer, the computer is caused to perform the method according to any one of claims 1 to 27.

32. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a communication device equipped with the chip executes a method as claimed in any one of claims 1 to 27.

33. A computer program product, characterized in that When the computer program product is executed by a communication device, the method according to any one of claims 1 to 27 is implemented.

Images