Communication method and apparatus

Abstract

Provided in the present application are a communication method and apparatus. The communication method comprises: receiving at least one piece of control information, wherein each piece of control information is associated with at least one time-frequency resource, and each time-frequency resource corresponds to at least one first resource block; and sending at least one feedback channel on a first frequency-domain resource, wherein 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, the sending power on the first frequency-domain resource is less 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 located in the same resource block set as each second resource block is β, β being less than or equal to 1, and N and M being integers greater than or equal to 1. In the present application, by means of defining the ratio of the sending power on a first resource block to the sending power on a second resource block, the sending power on the first resource block is increased, such that the detection performance of a feedback channel is improved.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 11, 2023, with application number 202311018798.8, and priority to the Chinese patent application with the invention name “Communication Method and Device”, all contents of which are incorporated by reference into this application. Technical Field

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

[0003] In sidelink (SL) communications, enabling unlicensed spectrum is a key evolutionary direction. In unlicensed spectrum, terminals can use spectrum resources in a competitive manner. One possible approach is for terminals to compete for channel occupancy time (COT) through a listen-before-talk (LBT) approach, thereby utilizing the COT. If a terminal successfully completes LBT, it can use the COT to send data and can also share the COT with other terminals.

[0004] Terminal devices can send feedback information via the physical side link feedback channel (PSFCH), which is carried on dedicated physical resource blocks (PRBs). However, in unlicensed spectrum, the receiver introduces common physical resource blocks (PRBs) to occupy frequency domain resources during the actual feedback process to meet channel occupancy requirements. However, common PRBs divert transmit power from dedicated PRBs, affecting PSFCH detection performance.

[0005] Summary of the Invention

[0006] 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.

[0007] In a first aspect, a communication method is provided. The method may be executed by a first terminal device, or may be executed by a chip or circuit for the first terminal device, although this application does not limit this. For ease of description, the following description uses execution by the first terminal device as an example.

[0008] 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 a first frequency domain resource, each feedback channel corresponds to a time-frequency resource associated with one control information, the first frequency domain resources include N first resource blocks and M second resource blocks, each feedback channel occupies at least one first resource block, the transmit power on the first frequency domain resource is less than or equal to the maximum transmit power, 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.

[0009] In an embodiment of the present application, the first resource block is used to carry feedback information in the 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.

[0010] 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.

[0011] 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.

[0012] In conjunction with the first aspect, in certain implementations of the first aspect, the method includes: 1，avg =P-10log 10 (N / T+M×β / T), P 2，avg =P-10log 10 (N / (β×T)+M / T),

[0013] or,

[0014] Among them, P refers to the transmission 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 further includes: allocating the transmit 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 conjunction with the first aspect, in some implementations of the first aspect, the method further includes: 1，avg (i)=P(i)-10log 10 (ki+Mi×β / Ti), P 2，avg (i)=P(i)-10log 10 (ki / β+Mi / Ti),

[0018] or,

[0019] Among them, 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.

[0020] 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.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: 1，avg =P CMAX -10log 10 (N+M×β), P 2，avg =P CMAX -10log 10 (N / β+M),

[0022] or,

[0023] 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.

[0024] 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.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes:

[0026] Among them, P CMAX refers to the maximum transmit power, and P(i) refers to the transmit power on the i-th feedback channel.

[0027] In combination with the first aspect, in certain implementations of the first aspect, the method further 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.

[0028] In conjunction with the first aspect, in certain implementations of the first aspect, the method further includes:

[0029] Among them, P CMAX refers to the maximum transmit power, and P(i) refers to the transmit power on the i-th feedback channel.

[0030] In combination with the first aspect, in certain implementations of the first aspect, the transmit 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.

[0031] 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.

[0032] 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.

[0033] In combination with the first aspect, in some implementations of the first aspect, the method further includes: P(i)=P1+10log 10 (ki+M×β),

[0034] Wherein, P(i) refers to the transmission power on the i-th feedback channel, and P1 refers to the first power.

[0035] In combination with the first aspect, in certain implementations of the first aspect, the method further 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.

[0036] In combination with the first aspect, in some implementations of the first aspect, the method further includes: P(i)=P1+10log 10 (ki+Mi×β),

[0037] Wherein, P(i) refers to the transmission power on the i-th feedback channel, 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 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.

[0039] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: 1，avg =min(P CMAX -10log 10 (N+M×β), P1),

[0040] 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 first resource block.

[0041] In combination with the first aspect, in certain 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.

[0042] In conjunction with the first aspect, in some implementations of the first aspect, the method further includes:

[0043] 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.

[0044] 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.

[0045] In combination with the first aspect, in some implementations of the first aspect, the method further includes: P(i)=min(P CMAX -10log 10 (N+M×β), P1)+10log 10 (ki+M×β),

[0046] 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.

[0047] In combination with the first aspect, in certain implementations of the first aspect, the method further 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.

[0048] In combination with the first aspect, in some implementations of the first aspect, the method further includes: P(i)=min(P CMAX -10log 10 (N+M×β), P1)+10log 10 (ki+Mi×β),

[0049] 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.

[0050] According to a second aspect, a communication device is provided, comprising: a transceiver unit for receiving at least one control information, each control information being associated with at least one time-frequency resource, and each time-frequency resource corresponding to at least one first resource block; a processing unit for determining a first frequency domain resource, the first frequency domain resource comprising N first resource blocks and M second resource blocks, the transmit power on the first frequency domain resource being less than or equal to the maximum transmit power, 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 being β, β being less than or equal to 1, and N and M being integers greater than or equal to 1; the transceiver unit is further used to send at least one feedback channel on the first frequency domain resource, each feedback channel corresponding to a control information, and each feedback channel occupying at least one first resource block.

[0051] 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.

[0052] 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 transmit and receive 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 the method in any possible implementation of the first aspect or the second aspect mentioned above.

[0053] Optionally, there are one or more processors and one or more memories.

[0054] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0055] Optionally, the communication device further includes a transmitter (transmitter) and a receiver (receiver).

[0056] In a fourth aspect, a communication system is provided, comprising a first terminal device; the first terminal device is configured to execute the method in any possible implementation of the first aspect.

[0057] In a fifth aspect, a computer-readable storage medium is provided, which stores a computer program or code. 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 of the first aspect.

[0058] 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 being used to store a computer program, and the processor being 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.

[0059] 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.

[0060] 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 of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] FIG1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application.

[0062] FIG2 is a schematic diagram of interleaving at 30 kHz subcarrier spacing provided in an embodiment of the present application.

[0063] FIG3 is a schematic diagram of a PSFCH transmission method provided in an embodiment of the present application.

[0064] FIG4 is a schematic diagram of a PSFCH transmission method provided in an embodiment of the present application.

[0065] FIG5 is a flow chart of a communication method 400 provided in an embodiment of the present application.

[0066] FIG6 is a schematic structural diagram of a communication device 1000 provided in an embodiment of the present application.

[0067] FIG7 is a schematic structural diagram of a communication device 2000 provided in an embodiment of the present application.

[0068] FIG8 is a schematic structural diagram of a chip system 3000 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0069] The technical solution in this application will be described below with reference to the accompanying drawings.

[0070] The technical solutions provided in this application can be applied to various communication systems, such as: fifth generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as sixth generation (6G) mobile communication systems. The technical solutions provided in this application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of Things (IoT) communication systems or other communication systems.

[0071] 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 can also include the current 3GPP Rel-16 and subsequent versions of V2X communications based on the NR system.

[0072] 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.

[0073] 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.

[0074] 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 capabilities, 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 (PLMNs), etc. 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 vehicle-mounted 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 vehicle-mounted communication module. The terminal device may also be a chip system, which may be composed of a chip or include a chip and other discrete devices.

[0075] As an example and not a limitation, in the embodiment of the present application, the terminal device may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that are designed and developed by applying wearable technology to intelligently design daily wearables, 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 achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those 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 smart bracelets and smart jewelry for vital sign monitoring.

[0076] The network device in the embodiments 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. For example, the network device may be a base station. The network device in the embodiments 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 replace the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station, secondary station, multi-standard radio (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. A base station may also refer to a communication module, modem, or chip used to be set in the aforementioned device or apparatus. A base station may also be a mobile switching center and a device that performs base station functions in D2D, V2X, and M2M communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. A base station may support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by network devices.

[0077] 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.

[0078] 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.

[0079] In the embodiments of the present application, the apparatus for implementing the function of the network device can be the network device, or it can be an apparatus capable of supporting the network device to implement the function, such as a chip system or chip, which can be installed in the network device. In the embodiments of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0080] Network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which network equipment and terminal devices are located. In addition, the scenarios targeted by the embodiments of this application do not necessarily include network equipment.

[0081] 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, which includes but is not limited to frequency bands near 2.4 GHz and frequency bands near 5.8 GHz. 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), 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).

[0082] The following briefly introduces a communication system applicable to an embodiment of the present application in conjunction with FIG1 , as follows.

[0083] Figure 1 is a schematic diagram of a wireless communication system applicable to an embodiment of the present application. As shown in Figure 1 , the wireless communication system may include at least one terminal device, such as UE1, UE2, and UE3 shown in Figure 1 . Optionally, the wireless communication system may also include at least one network device, such as the network device shown in Figure 1 . Optionally, the wireless communication system may not include a network device.

[0084] The network device and the terminal device can communicate with each other. If the network device and the terminal device can communicate with each other through the Uu interface, the link for communication between the network device and the terminal device can be recorded as a Uu link. As shown in (a) in Figure 1, the network device and UE1 can communicate directly, and as shown in (b) in Figure 1, 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, not a physical entity. The main link is only a name for distinction, and its specific name does not limit the scope of protection of this application.

[0085] Terminal devices can also communicate with each other. For example, terminal devices can communicate directly with each other, as shown in (a) to (c) in Figure 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. As shown in (a) in Figure 1, UE1 and UE2 can communicate through network devices, and as shown in (d) in Figure 1, 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, and is a logical concept, not 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.

[0086] As an example, SL communication between terminal devices can be used in the Internet of Vehicles or intelligent transportation systems (ITS), such as the V2X communication mentioned above, and can also be used in indoor commercial communication scenarios.

[0087] Optionally, SL communication between terminal devices can be performed under network coverage or without network coverage. As shown in (a) to (b) of Figure 1, UE1 and other UEs can communicate under network coverage; or, as shown in (c) to (d) of Figure 1, UE1 and other UEs can communicate outside network coverage (out-of-coverage).

[0088] Optionally, the time-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.

[0089] It is understood that Figure 1 is merely a simplified schematic diagram for ease of understanding, and the wireless communication system may further include other network devices or other terminal devices, or may not include network devices, which are not shown in Figure 1. The embodiments of the present application may be applicable to any communication scenario in which a transmitting device and a receiving device communicate.

[0090] It should be noted that the embodiments of the present application do not specifically 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 can be a terminal device, or a functional module in the terminal device that can call and execute the program.

[0091] 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.

[0092] 1. Licensed and unlicensed spectrum

[0093] 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 equipment uses spectrum resources in a competitive manner. The unlicensed spectrum can also be called 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 (e.g., all or part of 839–928 MHz), 2.4 GHz (e.g., all or part of 2401–2495 MHz), 3.6 GHz (e.g., all or part of 3655–3695 MHz), 5 GHz (e.g., all or part of 5030–5990 MHz), or 6 GHz (e.g., all or part of 5945–7115 MHz).

[0094] Currently, 3GPP has defined two frequency bands associated with V2X: n38 (2570MHz–2620MHz) and n47 (5855MHz–5925MHz). The n38 band, when used to support V2X SL services, is dedicated to NR V2X in a specific area. The n47 band, commonly known as the Intelligent Transportation System (ITS) band, currently has no network equipment deployed.

[0095] In addition to the two frequency bands mentioned above, R18 is currently conducting research on SL system technologies in shared spectrum, including the n46, n96, and n102 frequency bands. In this shared frequency band, due to the presence of various types of terminal devices, to avoid collisions and interference between different users, the transmitting node needs to use spectrum resources in a competitive manner, for example, by competing for the channel through the listen-before-talk (LBT) method. Before accessing the channel and starting to send data, the UE needs to detect 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.

[0096] 2. Unlicensed spectrum sidelink SL-U

[0097] SL-U mainly refers to SL transmission in unlicensed spectrum. For unlicensed spectrum, the standard introduces two access mechanisms including Type 1LBT and Type 2LBT. Among them, Type 1LBT is used in scenarios where COT is preempted, and LBT is required, that is, monitoring is required before transmission. The monitoring here can be energy detection, that is, detecting energy over 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 2LBT is used to share the COT that other UEs have grabbed through Type 1LBT. For example, UE1 uses Type 1LBT 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 2LBT to access the remaining transmission opportunities in the COT occupied by UE1.

[0098] 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 25μs after the end of other transmissions. That is, if the channel is found to be idle within 25μs through channel sensing, the channel can be occupied. Type 2B LBT means occupying the channel 16μs after the end of other transmissions. The difference from Type 2A LBT is that the channel sensing duration differs by 9μs (25μs - 16μs = 9μs), which is the duration of a sensing time slot. Type 2C LBT means occupying the channel for transmission less than 16μs after the end of other transmissions (without channel monitoring), but the transmission duration cannot exceed 584μs.

[0099] 3. SL resource pool

[0100] 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.

[0101] Optionally, the resource pool may further include time slots for SL transmission in the time domain.

[0102] 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.

[0103] It should be understood that a resource pool can be a physical or 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. This resource determination process includes the following two situations:

[0104] (1) The UE is controlled by the network device and determines a resource from the resource pool for data transmission based on the network device's instructions. This is also called Mode 1.

[0105] (2) The UE autonomously selects a resource from the resource pool for data transmission, also known as Mode 2. This means that the UE has the opportunity to independently determine resource determination and allocation. Based on sensing, the UE can exclude some occupied or highly interfering resources and select idle or low-interference resources for transmission.

[0106] 4. Time domain unit and frequency domain unit

[0107] Data or information can be carried through time-frequency resources.

[0108] 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).

[0109] 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 half frame, a slot, a mini-slot, a partial slot, or an orthogonal frequency division multiplexing (OFDM) symbol, etc. Alternatively, the time domain unit may be a collection of one or more time domain resources, for example, a time domain unit is one or more OFDM symbols within a time slot, for example, the number of the one or more symbols is 6, 7, 12, or 14, etc. The one or more time domain units may be continuous or discrete in time.

[0110] 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.

[0111] In addition, the duration of a time slot can be related to the subcarrier spacing. For example, when the subcarrier spacing is 15kHz, the duration of a time slot is 1 millisecond (ms); when the subcarrier spacing is 30kHz, the duration of a time slot is 0.5ms; when the subcarrier spacing is 60kHz, the duration of a time slot is 0.25ms. Similarly, when the subcarrier spacing is 15*2 u kHz, the length of a time slot is 2 -u ms,u=0,1,2,…。

[0112] In the frequency domain, time-frequency resources can include one or more frequency domain units. A frequency domain unit can be a resource element (RE), a resource block (RB), a subchannel, an RB set, a resource pool, a bandwidth, a bandwidth part (BWP), a carrier, a channel, or an interlace, etc.

[0113] 5. Power spectral density (PSD)

[0114] The power of a signal per unit spectrum is called power spectral density.

[0115] 6. COT

[0116] Channel occupancy time (COT) refers to the transmission time of a UE on one or more channels after completing the channel access process. If a UE obtains channel usage rights through LBT, it can occupy the channel for a period of time, which is called the COT. COT can be a concept of time, that is, a continuous transmission time obtained 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.

[0117] 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, UE 2 can share the 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.

[0118] 7. Hybrid Automatic Repeat Request HARQ

[0119] During data transmission, transmission bit errors or packet loss may occur. The HARQ mechanism can improve the robustness of data transmission.

[0120] 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 was received correctly. For example, if the receiver receives the data correctly, it sends a positive acknowledgment (ACK) to the transmitter. Based on the ACK, the transmitter assumes that the data was received correctly and does not need to be retransmitted. If the receiver does not receive the data correctly, it sends a negative acknowledgment (NACK) to the transmitter. Based on the NACK, the transmitter assumes that the data was not received correctly. Optionally, the receiver can also send a negative acknowledgment to the transmitter if the data is not received correctly, and not send an acknowledgment to the transmitter if the data is received correctly.

[0121] 8. Conflict Information

[0122] In one possible implementation, when transmitting a PSSCH, the time-frequency resources occupied by two PSSCHs may overlap, causing interference and impacting the demodulation performance of both PSSCHs. Under certain conditions, the receiving UE of one of the PSSCHs will send a conflict indication message to the transmitting UE of the PSSCH with a lower Layer 1 priority (L1 priority). Optionally, upon receiving the conflict indication message, the transmitting UE will trigger resource reselection.

[0123] 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 transmit on this time-frequency resource). If certain conditions are met, the terminal device will send conflict indication information to the UE sending the PSSCH. Optionally, after receiving the conflict indication information, the sending UE will trigger resource reselection.

[0124] It should be understood that the conditions required to send the conflict indication information are known in the art. For details, please refer to protocol 38.213, which will not be described in detail here.

[0125] 9. Physical Side Feedback Channel (PSFCH)

[0126] The PSFCH in this application is used to carry feedback information.

[0127] 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 information indicating one state, information indicating two states, or information indicating multiple bits, which is not limited in this application.

[0128] 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 requirements, whether the beam associated with the PSFCH is used, and / or information on the signal quality of the beam.

[0129] Optionally, the feedback information may also be conflict indication information.

[0130] The PSFCH occupies a number of symbols or a full time slot, such as 1, 2, 3, 4, 7, 12, or 14 symbols. In one example, in a time slot with a PSFCH, the penultimate and third OFDM symbols carry the PSFCH. The signal on the third-to-last symbol is a repetition of the signal on the second-to-last symbol, facilitating AGC adjustments by the receiving terminal.

[0131] The above briefly explains the terms involved in this application, which will not be repeated in the following embodiments. In addition, the above explanation of the terms is only for the purpose of facilitating understanding and does not limit the scope of protection of the embodiments of this application.

[0132] For unlicensed spectrum, terminal devices can use spectrum resources in a competitive manner. For example, a terminal device competes for a channel using a listen-before-talk (LBT) method to access the channel. If the LBT is successful, the terminal device can use the channel to send data and 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 via the PSFCH to indicate whether the data was received correctly.

[0133] However, when sending PSFCH on an unlicensed spectrum, it is necessary to meet the requirement of occupying a certain channel bandwidth. For example, in some cases, the terminal device is required to ensure that its transmission occupies at least 80% of the bandwidth on the corresponding one or more 20MHz channels. In order to meet the above-mentioned occupied channel bandwidth (OCB) requirements, in one possible implementation method, interlace is introduced as a form of occupying frequency domain resources. Figure 2 is a schematic diagram of interlace under 30kHz subcarrier spacing provided by an embodiment of the present application, as shown in Figure 2, wherein the interlace indicates that the frequency domain resources occupied by the transmitted signal will present a comb-shaped structure. In Figure 2, an interlace includes PRBs with the same label. In addition, the resource block set (RB set) in Figure 2 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.

[0134] Figure 3 is a schematic diagram of a PSFCH transmission provided by an embodiment of the present application. As shown in Figure 3, after receiving the sidelink shared channel (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. 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) for the transmitter of the 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 / filler 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 for occupying the channel. It should be noted that different feedback channels in this application may use common public physical resource blocks (for example, each PSFCH in Figure 3 occupies all public physical resource blocks in RB set 1), or may use completely different public physical resource blocks, or may use partially overlapping public physical resource blocks.

[0135] It should be understood that Figure 3 is merely an example. Dedicated physical resource blocks are used to carry feedback information. Dedicated physical resource blocks may carry ACK / NACK information, as well as other information. For example, dedicated physical resource blocks may also carry conflict indication information, beam-related information, etc., which is not limited in this application. In this case, common physical resource blocks may carry some redundant signals / filler signals and / or a copy of the content on the dedicated physical resource blocks.

[0136] Common physical resource blocks include those that enable the transmitted PSFCH to meet the OCB requirement. Exemplarily, the physical resource blocks that enable the transmitted PSFCH to meet the OCB requirement include some or all physical resource blocks in an interlace, which may also be referred to as a common interlace. Common interlaces are predefined / (pre)configured. Exemplarily, when the dedicated resource blocks occupied by the feedback channel are in RB set 1, the physical resource blocks that enable the transmitted PSFCH to meet the OCB requirement include some or all physical resource blocks in the common interlace in RB set 1.

[0137] Optionally, a common physical resource block may include some or all 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.

[0138] Optionally, in a possible implementation manner, the common physical resource blocks also include physical resource blocks additionally sent by the terminal device.

[0139] Figure 4 is a schematic diagram of a PSFCH transmission provided by an embodiment of the present application, in which the terminal device additionally sends a physical resource block. As shown in Figure 4, after receiving the physical sidelink shared channel (PSSCH) sent by UE1-UE3, the PSFCH is sent to UE1-UE3. The COT includes two resource block sets (RB sets). The terminal device transmits the PSFCH on RB set1. RB set1 includes common physical resource blocks and dedicated physical resource blocks that enable the PSFCH to meet the 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 set 1 can only occupy RB set 1 and cannot occupy RB set 2, that is, they are not enough to occupy the COT. In order to occupy the COT, the terminal device sends additional physical resource blocks on RB set2. Taking the transmission of PSFCH to UE1 as an example, dedicated physical resource block 11 in RB set 1 is used to carry feedback information, common physical resource blocks 11, 21, and 31 in RB set 1 are used to meet the OCB requirements, and common physical resource blocks 12, 22, and 32 in RB set 2 are used to occupy the COT. The information carried by the dedicated physical resource blocks and common physical resource blocks can be found in the relevant description in Figure 3 and is not repeated here.

[0140] It is understood that the UE can determine on its own whether it needs to send additional physical resource blocks, or send additional physical resource blocks based on the received indication information, and this application does not limit this. Since sending a PSFCH requires sending it simultaneously on common physical resource blocks and dedicated physical resource blocks, the common physical resource blocks will divide the power of the dedicated physical resource blocks, resulting in a reduction in the transmit power of the dedicated physical resource blocks used to carry feedback information, affecting the detection performance of the PSFCH.

[0141] 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.

[0142] To facilitate understanding of the embodiments of the present application, the following points are explained:

[0143] 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 by each other. The technical features in different embodiments can be combined to form new embodiments based on their internal logical relationships.

[0144] Second, in this application, "at least one" means one or more, and "more" 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 previous and next associated objects 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. Wherein a, b and c can be single or multiple, respectively.

[0145] Third, throughout this application, the terms "first," "second," and various numerical references are used for descriptive purposes only and are not intended to limit the scope of the embodiments of this application. For example, they are used to distinguish between different messages, rather than to describe a specific order or precedence. It should be understood that these references are interchangeable, where appropriate, to allow for the description of scenarios beyond the embodiments of this application.

[0146] Fourth, in this application, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or are inherent to these processes, methods, products or apparatuses.

[0147] Fifth, in this application, "used to indicate" can include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and does not necessarily mean that the indication information carries A.

[0148] 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, and this application does not limit this. "Predefined" may include pre-definition, such as protocol definition. "Preconfiguration" can 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.

[0149] Seventh, in this application, "communication" can also be described as "data transmission", "information transmission", "data processing", etc. "Transmission" includes "sending" and "receiving".

[0150] 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 in which a transmitting device and a receiving device communicate, such as the communication system shown in FIG1 above.

[0151] Figure 5 is a flow chart of a communication method 200 provided in an embodiment of the present application, wherein the first terminal device is the transmitter of the PSFCH, the second terminal device is the receiver of the 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 the OCB. Exemplarily, the first resource block can be the above-mentioned dedicated physical resource block (dedicated PRB), and the second resource block can 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 constitute a limitation on the scope of protection of the present application.

[0152] S510: The first terminal device receives at least one control information from the second terminal device, where each control information is associated with at least one time-frequency resource.

[0153] It should be understood that the control information being 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 resource reservation period field.

[0154] 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 successful reception of data means successful reception of the PSSCH, and failure to receive data means 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.

[0155] 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 that caused the conflict. At this time, the first terminal device determines the first resource block occupied by the PSFCH based on the time-frequency resources scheduled by the control information or the reserved time-frequency resources that caused the conflict.

[0156] 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 (in this embodiment, HARQ information and / or conflict indication information). Each feedback channel corresponds to a time-frequency resource, which can also be interpreted as the first resource block occupied by the feedback channel being determined based on 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.

[0157] 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. When certain conditions are met, 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.

[0158] In another possible implementation, a conflict occurs on a time-frequency resource, that is, the first 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 transmit 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.

[0159] It should be understood that the conditions required to send the conflict indication information are known in the art. For details, please refer to protocol 38.213, which will not be described in detail here.

[0160] 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, all conflict indication information, or some HARQ information and some conflict indication information, which is not limited in this application.

[0161] S520: The first terminal device determines a first frequency domain resource, where the first frequency domain resource is used to transmit a PSFCH. The first frequency domain resource includes N first resource blocks and M second resource blocks. A 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, where β is less than or equal to 1, and N and M are integers greater than or equal to 1.

[0162] The N first resource blocks are used to carry feedback information carried in the feedback channel (HARQ information and / or conflict indication information in this embodiment). The first resource block occupied by each feedback channel is determined by the time-frequency resources corresponding to the feedback channel.

[0163] In a possible implementation, the M second resource blocks are all used to ensure that the sending of the PSFCH meets the OCB requirement.

[0164] In one possible implementation, some of the M second resource blocks are used to ensure that the sending of PSFCH meets the OCB requirements, and other resource blocks in the M second resource blocks except for the above-mentioned some resource blocks have other functions, for example, such as being used to occupy COT, etc., see the relevant description in Figure 4.

[0165] 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.

[0166] 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 (for example, 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 scope of protection of this application.

[0167] Wherein, β is a value that remains constant over a certain period of time. β may be a predefined value or a (pre)configured value in the first terminal device. This application does not limit the source of β. Predefined refers to protocol provisions, and (pre)configured includes system configuration and factory settings.

[0168] Since the first frequency domain resources may include resource blocks from different resource block sets, the present application implements the limitation 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 resources satisfies the ratio relationship of β. In this case, 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 first resource block in different resource block sets does not satisfy the ratio relationship of β. For example, 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.

[0169] It should be understood that when setting the value of β, it should first be ensured that the transmission within each resource block set meets the OCB requirement, that is, the transmission within 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.

[0170] 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.

[0171] For ease of description, the number of feedback channels is set to T, where T is an integer greater than or equal to 1.

[0172] 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 those skilled in the art. 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.

[0173] Method 1: According to the prior art, the number T of feedback channels to be sent and the transmit power P of each feedback channel are determined, and then the transmit power on each first resource block and each second resource block is determined.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] It should be understood that after the feedback channel to be transmitted is determined, all first resource blocks occupied by the feedback channel to be transmitted, 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 required for PSFCH transmission to meet OCB requirements, and optionally, other physical resource blocks that the terminal device needs to additionally transmit.

[0178] In one 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 can be the same or different.

[0179] Exemplarily, the transmit power P on each first resource block in the first frequency domain resource is 1，avg and the transmit power P on each second resource block in the first frequency domain resource 2，avg The following relations are satisfied:

[0180] or,

[0181] 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:

[0182] or,

[0183] In one 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. For example, the transmit power P on each first resource block in the first frequency domain resource is 1，avg and the transmit power P on each second resource block in the first frequency domain resource 2，avg The following relationship is satisfied: 1，avg =P+10log 10 (T)-10log 10(N+M×β), #(7)

[0184] or

[0185] In addition, when the number of first resource blocks occupied by each feedback channel is the same, which is k, the above formula can be equivalently expressed as: 1，avg =P+10log 10 (T)-10log 10 (k×T+M×β), #(10)

[0186] or,

[0187] Furthermore, the transmit 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 relationship is satisfied: 1，N =P 1，avg +10log 10 (N), #(13) P 2，M =P 2，avg +10log 10 (M). #(14)

[0188] Method 2: According to the prior art, the number T of feedback channels to be sent and the transmit power P of each feedback channel are determined, and then the transmit power on each first resource block and each second resource block is determined.

[0189] Specifically, the transmit power of each first resource block occupied by the i-th feedback channel and the transmit power of each second resource block located in the same resource block set as the i-th feedback channel are determined based on 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.

[0190] It should be understood that after determining the feedback channel to be transmitted, the first terminal device can determine all first resource blocks occupied by the feedback channel to be transmitted, 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 required for PSFCH transmission to meet OCB requirements, and optionally, other physical resource blocks that the first terminal device needs to additionally transmit.

[0191] In one possible implementation, the transmit 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.

[0192] 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.

[0193] 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:

[0194] or,

[0195] By performing the above operation on each feedback channel, the transmit power of each first resource block and each second resource block can be obtained.

[0196] In one possible implementation, the transmit power of each feedback channel within a resource block set is first summed to obtain the total transmit power within the resource block set. Then, power is allocated to the first resource block and the second resource block within the resource block set according to a scaling factor β. It should be understood that the resource block set described above is the resource block set containing the first resource block occupied by the i-th feedback channel.

[0197] 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: 1，avg (i) = P + 10log 10 (Ti)-10log 10 (ki×Ti+Mi×β), #(18)

[0198] or,

[0199] By performing the above operation on each feedback channel / each resource block set, the transmit power of each first resource block and each second resource block can be obtained.

[0200] Furthermore, the transmission power P on the ki first resource blocks occupied by the i-th feedback channel is 1，k(i) The transmit power P on 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: 1，k (i) = P 1，avg (i)+10log 10 (k), #(21) P 2，Mi (i) = P 2，avg (i)+10log 10 (Mi). #(22)

[0201] Method three: first determine the transmit power on each first resource block and second resource block, and then determine the transmit power on each feedback channel.

[0202] Scenario 1: No power limitation based on downlink path loss is required (for example, the first terminal device is out of coverage of the network device). In this case, the first terminal device independently determines the number T of feedback channels to be sent, and T is less than or equal to the maximum number of PSFCHs that the terminal device can send simultaneously.

[0203] It should be understood that after determining the feedback channel to be transmitted, the first terminal device can determine all first resource blocks occupied by the feedback channel to be transmitted, 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 required for PSFCH transmission to meet OCB requirements, and optionally, may also include other physical resource blocks that the first terminal device needs to additionally transmit.

[0204] 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 transmission power on each first resource block in the first frequency domain resources and the transmission power on each second resource block in the first frequency domain resources.

[0205] For example, the maximum transmission power P CMAX Power is allocated to the first resource block and the second resource block respectively 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 transmit power P on each second resource block in the first frequency domain resource 2，avg The following relationship is satisfied: 1，avg =P CMAX -10log 10 (N+M×β), #(23)

[0206] or,

[0207] Furthermore, the total transmit power P on the N first resource blocks 1，B and the total transmit power P on the M second resource blocks 2，M The following relationship is satisfied: 1，N =P 1，avg +10log 10 (N), #(26) P 2，M =P 2，avg +10log 10 (M). #(27)

[0208] At this time, the transmit power on each feedback channel can also be obtained.

[0209] 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 transmission power on the i-th feedback channel.

[0210] Exemplarily, the transmit power P(i) on the i-th feedback channel satisfies the following relationship:

[0211] 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 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.

[0212] Exemplarily, the transmit power P(i) on the i-th feedback channel satisfies the following relationship:

[0213] Scenario 2: Power based on downlink path loss needs to be considered, for example, when the first terminal device is within the coverage of the network device. It should be understood that to avoid interference with the transmission of the network device, the transmit power on each resource block should not exceed the power P1 determined based on the downlink path loss.

[0214] 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).

[0215] 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.

[0216] (1) The number of scheduled feedback channels that need to be sent does not exceed the maximum number of PSFCHs that the first terminal device can send simultaneously. The number of N channels occupied by all feedback channels that need to be sent is N. total The first resource block and all M total The second resource block satisfies: P1+10log 10 (N total +M total ×β)≤P CMAX 。#(30)

[0217] 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 send additionally.

[0218] 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 .

[0219] (2) The number of scheduled feedback channels that need to be sent exceeds the maximum number of PSFCHs that can be sent simultaneously by the first terminal device. The first terminal device determines at least one feedback channel in descending order of priority of the feedback channels. The determined feedback channels occupy N total The first resource block and all M total The second resource block satisfies: P1+10log 10 (N total +M total ×β)≤P CMAX 。#(31)

[0220] 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.

[0221] It should be understood that at this time, the terminal device will send at least one determined 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.

[0222] 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.

[0223] In case 2-1, the power on each first resource block is P1, and the power on each second resource block is: P 2，avg =P1+10log 10 (β). #(32)

[0224] In a possible implementation, the transmit power of the i-th 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 i-th feedback channel, the first power and β.

[0225] Exemplarily, the transmission power P(i) of the i-th feedback channel satisfies the following relationship: P(i)=P1+10log 10 (ki+M×β). #(33)

[0226] In one 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.

[0227] Exemplarily, the transmission power P(i) of the i-th feedback channel satisfies the following relationship: P(i)=P1+10log 10 (ki+Mi×β). #(34)

[0228] 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.

[0229] (1) The number of scheduled feedback channels that need to be sent does not exceed the maximum number of PSFCHs that the first terminal device can send simultaneously. The number of N channels occupied by all feedback channels that need to be sent is N. total The first resource block and all M total The second resource block satisfies: P1+10log 10 (N total +M total ×β)>P CMAX 。#(35)

[0230] It should be understood that M totalThe 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.

[0231] (2) The number of scheduled feedback channels that need to be sent exceeds the maximum number of PSFCHs that can be sent simultaneously by the first terminal device. The first terminal device determines at least one feedback channel in descending order of priority of the feedback channels. The determined feedback channels occupy N total The first resource block and all M total The second resource block satisfies: P1+10log 10 (N total +M total ×β)>P CMAX 。#(36)

[0232] 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.

[0233] 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 based on the order of PSFCH priority from high to low, so that:

[0234] 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.

[0235] The definition of J is as follows: J is the maximum value that satisfies the following formula: P1+10log 10 (N total (q)+M total (q)×β)≤P CMAX ,#(38)

[0236] Otherwise, J is equal to 0.

[0237] 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.

[0238] 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.

[0239] It should be understood that after determining the feedback channels to be transmitted, the first terminal device can determine all first resource blocks occupied by the feedback channels to be transmitted, 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 required to ensure that the transmission of the PSFCH meets the OCB requirements; optionally, they may also include other physical resource blocks that the first terminal device needs to transmit in addition. In this case, the number of feedback channels to be transmitted is less than or equal to the number of feedback channels that need to be transmitted.

[0240] Specifically, according to the maximum transmission power P CMAX , 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 transmission power on each first resource block.

[0241] For example, the transmit power P on each first resource block is 1，avg The following relationship is satisfied: 1，avg =min(P CMAX -10log 10 (N+M×β), P1). #(40)

[0242] The transmit power on each second resource block is determined according to the transmit power on each first resource block and β.

[0243] Exemplarily, the transmit power P on each second resource block is 2，avg The following relations are satisfied:

[0244] 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 and β of first resource blocks occupied by each feedback channel, determine the transmission power on each feedback channel.

[0245] Exemplarily, the transmission power P on each feedback channel satisfies the following relationship: P=min(P CMAX -10log 10(N+M×β), P1)+10log 10 (k+M×β). #(42)

[0246] 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.

[0247] Exemplarily, the transmission power P(i) on the i-th feedback channel satisfies the following relationship: P(i)=min(P CMAX -10log 10 (N+M×β), P1)+10log 10 (ki+Mi×β). #(43)

[0248] 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 transmit power limitation caused by the PSD limitation needs to be considered.

[0249] In one 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 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, and β. X(s), Y(s), and Δf are all in MHz.

[0250] For example, the first threshold value P limit1 The following relationship is satisfied: limit1 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 (12×Δf). (44)

[0251] In one possible implementation, the transmit power on the first resource block occupied by the i-th feedback channel is less than a second threshold, where 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.

[0252] For example, the second threshold value P limit2 The following relationship is satisfied: limit2 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 (ki×12×Δf). (45)

[0253] In one possible implementation, the transmit power of the i-th feedback channel is less than a third threshold, where the third threshold is based on the number ki of 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.

[0254] For example, the third threshold value P limit3 The following relationship is satisfied: limit3 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 ((ki+Mi×β)×12×Δf). (46)

[0255] In one possible implementation, the transmit power of the i-th feedback channel is less than a fourth threshold, where the fourth threshold is based on the number ki of 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.

[0256] For example, the fourth threshold value P limit4 The following relationship is satisfied: limit4 =P PSD -10log 10 (max(X(s)+Y(s)×β))+10log 10 ((ki+M×β)×12×Δf). (47)

[0257] 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.

[0258] S530: The first terminal device sends at least one feedback channel to the second terminal device on the first frequency domain resources.

[0259] 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.

[0260] 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.

[0261] It should be understood that the first relationship can also be an equivalent description of the ratio of the power on each second resource block to each first resource block being β, and all equivalent descriptions of the first relationship in the embodiments of the present application should be within the scope of protection 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. Replacing β in the above formula with 1 / α and performing a series of mathematical transformations can obtain the corresponding formula, which will not be repeated in this application.

[0262] The above description of the communication method embodiment of the present application is described in detail in conjunction with Figures 1 to 5. The following description of the communication device embodiment of the present application is described in detail in conjunction with Figures 6 and 7. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0263] Figure 6 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application. As shown in Figure 6, the device 1000 may include a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 can communicate with the outside world, and the processing unit 1020 is used for data processing. The transceiver unit 1010 may also be referred to as a communication interface or a transceiver unit.

[0264] 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.

[0265] In another possible design, the device 1000 can 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.

[0266] 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 dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merging logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will 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 described here.

[0267] 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 the corresponding software can be implemented by hardware. 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 to respectively perform the transceiver operations and related processing operations in each method embodiment.

[0268] In addition, the above-mentioned transceiver unit can also be a transceiver circuit (for example, it can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit. In an embodiment of the present application, the device in Figure 6 can be the receiving end or the transmitting end in the aforementioned embodiment, or it can be a chip or a chip system, such as a system on chip (SoC). Among them, the transceiver unit can be an input and output circuit or a communication interface. The processing unit is a processor or microprocessor or integrated circuit integrated on the chip. This is not limited here.

[0269] Figure 7 is a schematic block diagram of a communication device 2000 provided in an embodiment of the present application. As shown in Figure 7, the device 2000 includes a processor 2010 and a transceiver 2020. The processor 2010 and the transceiver 2020 communicate with each other via an internal connection path. The processor 2010 is configured to execute instructions to control the transceiver 2020 to transmit and / or receive signals.

[0270] Optionally, the apparatus 2000 may further include a memory 2030, which communicates with the processor 2010 and the transceiver 2020 via 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.

[0271] In a possible implementation, the device 2000 is used to implement various processes and steps corresponding to the first terminal device in the above method embodiment.

[0272] In another possible implementation, the device 2000 is used to implement the various processes and steps corresponding to the second terminal device in the above method embodiment.

[0273] It should be understood that device 2000 can specifically be the transmitting end or receiving end in the above-mentioned embodiments, or can also be a chip or 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 perform the various steps and / or processes corresponding to the transmitting end or receiving end in the above-mentioned method embodiments.

[0274] 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 non-volatile random access memory. For example, the memory may also store device type information. The processor 2010 may be configured to execute instructions stored in the memory. When the processor 2010 executes the instructions stored in the memory, the processor 2010 is configured to perform the various steps and / or processes of the above-described method embodiments corresponding to the transmitting end or the receiving end.

[0275] During implementation, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. 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 the 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 will not be described in detail here.

[0276] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-described method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-described 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, or a discrete hardware component. The processor in the embodiments of the present application can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-described method.

[0277] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may 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 may 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 bus 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.

[0278] FIG8 is a schematic block diagram of a chip system 3000 according to an embodiment of the present application. As shown in FIG8 , the chip system 3000 (or also referred to as a processing system) includes a logic circuit 3010 and an input / output interface 3020 .

[0279] Logic circuit 3010 may be a processing circuit in chip system 3000. Logic circuit 3010 may be coupled to a storage unit and call instructions in the storage unit, so that chip system 3000 can implement the methods and functions of various embodiments of the present application. Input / output interface 3020 may be an input / output circuit in chip system 3000, outputting information processed by chip system 3000 or inputting data or signaling information to be processed into chip system 3000 for processing.

[0280] As a solution, the chip system 3000 is used to implement the operations performed by the terminal device in the above various method embodiments.

[0281] 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 the processing-related operations performed by the first terminal device in the embodiment shown in Figure 5; 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 the sending and / or receiving-related operations performed by the first terminal device in the embodiment shown in Figure 5.

[0282] 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 the processing-related operations performed by the second terminal device in the embodiment shown in Figure 5; 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 the sending and / or receiving-related operations performed by the second terminal device in the embodiment shown in Figure 5.

[0283] An embodiment of the present application further provides a computer-readable storage medium storing computer instructions for implementing the methods executed by a terminal device (such as the first terminal device or the second terminal device) in the above-mentioned method embodiments.

[0284] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed by a computer, implement the methods performed by a terminal device (such as the first terminal device or the second terminal device) in the above-mentioned method embodiments.

[0285] 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.

[0286] 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.

[0287] Those skilled in the art will appreciate that the units and algorithmic steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0288] Those skilled in the art will 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.

[0289] In the several embodiments provided in this 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 merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, 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.

[0290] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0291] 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.

[0292] 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, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method 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.

[0293] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection 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: 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: 1，avg (i) = P(i)-10log 10 (ki+Mi×β / Ti), P 2，avg (i) = P(i)-10log 10 (ki / 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: 1，avg =P CMAX -10log 10 (N+M×β), P 2，avg =P 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: 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 transmission 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 includes: 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 includes: 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.

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