Terminal device and method

Abstract

Embodiments of the present disclosure relate to a method, an apparatus, and a computer-readable medium for communication. According to embodiments of the present disclosure, when a terminal device transmits common information on a sidelink, the terminal device determines a first transmission power for the common information based on a reference transmission power and a power reduction value. In this case, the terminal device transmits the common information at the first transmission power. When the terminal device transmits HARQ feedback information, the terminal device transmits the HARQ feedback information at the second transmission power. In this way, more remaining power can be used for the HARQ feedback information, and transmission of the HARQ feedback information can be improved.

Description

[Technical Field]

[0001] FIELD Embodiments of the present disclosure relate generally to the field of telecommunications, and more particularly to a communication method, apparatus, and computer storage medium for power control of sidelink transmissions. [Background technology]

[0002] With the development of communication technology, terminal devices can communicate directly with each other by establishing a sidelink between them and utilizing unlicensed spectrum.

[0003] It is proposed to reuse the channel access mechanism from New Radio Unlicensed (NR-U) for sidelink unlicensed operation. If the existing NR-U channel access framework does not support the required sidelink unlicensed (SL-U) functionality, appropriate recommendations must be made. Regarding the physical channel design framework, changes are required to the NR sidelink physical channel structure and procedures for operation in unlicensed spectrum. Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, embodiments of the present disclosure provide a method, apparatus, and computer storage medium for power control of sidelink transmissions. [Means for solving the problem]

[0005] In a first aspect, a terminal device is provided, comprising: a processor configured to: obtain a configuration including power control information for sidelink transmissions associated with the terminal device; transmit common information to a second terminal device at a first transmit power in accordance with determining common information to be transmitted on a set of common resources, the first transmit power being determined based on a reference transmit power and a power decrement value in the power control information; and transmit hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to the second terminal device at a second transmit power in accordance with determining hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to be transmitted on a set of dedicated resources.

[0006] In a second aspect, a terminal device is provided, comprising: a processor configured to cause the terminal device to determine a plurality of physical sidelink feedback channel (PSFCH) transmissions in PSFCH opportunities, the PSFCH transmissions being used for at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, conflict information, and common occupied channel bandwidth (OCB) information, and to perform PSFCH transmissions for the common OCB information with a second terminal device based on priority information associated with the common OCB information.

[0007] In a third aspect, there is provided a network device comprising: a processor configured to cause the network device to transmit configurations including power control information for sidelink transmissions associated with a terminal device, wherein a first transmit power for transmitting common information on a set of common resources is determined based on a reference transmit power and a power decrement value in the power control information, and a second transmit power for transmitting hybrid-automatic repeat request acknowledgment (HARQ-ACK) information on a set of dedicated resources is determined based on the reference transmit power and a power increase value.

[0008] In a fourth aspect, there is provided a communication method, comprising: obtaining, at a first terminal device, a configuration including power control information for sidelink transmissions associated with the first terminal device; determining common information to be transmitted on a set of common resources, transmitting the common information to another terminal device at a first transmit power, the first transmit power being determined based on a reference transmit power and a power decrement value in the power control information; and determining hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to be transmitted on a set of dedicated resources, transmitting the HARQ-ACK information to the other terminal device at a second transmit power.

[0009] In a fifth aspect, a communication method is provided, comprising: determining, in a first terminal device, a plurality of physical sidelink feedback channel (PSFCH) transmissions in PSFCH opportunities, the plurality of PSFCH transmissions being used for at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, conflict information, and common occupied channel bandwidth (OCB) information; and performing PSFCH transmissions for the common OCB information with a second terminal device based on priority information associated with the common OCB information.

[0010] In a sixth aspect, there is provided a communication method, comprising: transmitting a configuration comprising power control information for sidelink transmissions associated with a terminal device, wherein a first transmit power for transmitting common information on a set of common resources is determined based on a reference transmit power and a power decrement value in the power control information, and a second transmit power for transmitting hybrid-automatic repeat request acknowledgment (HARQ-ACK) information on a set of dedicated resources is determined based on the reference transmit power and a power increase value.

[0011] In a seventh aspect, there is provided a computer readable medium having stored thereon instructions which, when executed on at least one processor, cause the at least one processor to implement a method according to the fourth, fifth or sixth aspect.

[0012] Other features of the present disclosure will become readily apparent from the following description. [Brief explanation of the drawings]

[0013] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description of several embodiments of the present disclosure in the accompanying drawings.

[0014] [Figure 1] FIG. 1 is a schematic diagram of a communication environment in which embodiments of the present disclosure can be implemented.

[0015] [Figure 2] 1 illustrates a signaling flow for communication according to some embodiments of the present disclosure.

[0016] [Figure 3A] FIG. 1 shows a schematic diagram of sidelink resource allocation according to some example embodiments of the present disclosure. [Figure 3B] FIG. 1 shows a schematic diagram of sidelink resource allocation according to some example embodiments of the present disclosure.

[0017] [Figure 4] FIG. 1 shows a schematic diagram of sidelink resources according to some example embodiments of the present disclosure.

[0018] [Figure 5A] 1 illustrates a schematic diagram of reserved resources according to some example embodiments of the present disclosure. [Figure 5B] 1 illustrates a schematic diagram of reserved resources according to some example embodiments of the present disclosure.

[0019] [Figure 6] 1 illustrates a signaling flow for communication according to some embodiments of the present disclosure.

[0020] [Figure 7] 1 is a flowchart of an exemplary method according to an embodiment of the present disclosure.

[0021] [Figure 8] 1 is a flowchart of an exemplary method according to an embodiment of the present disclosure.

[0022] [Figure 9] 1 is a flowchart of an exemplary method according to an embodiment of the present disclosure.

[0023] [Figure 10] FIG. 1 is a schematic block diagram of an apparatus suitable for practicing embodiments of the present disclosure.

[0024] Throughout the drawings, the same or similar reference numbers represent the same or similar elements. DETAILED DESCRIPTION OF THE INVENTION

[0025] The principles of the present disclosure will be described with reference to several embodiments. It should be understood that these embodiments are set forth for illustrative purposes only to aid those skilled in the art in understanding and practicing the present disclosure, and do not imply any limitations on the scope of the present disclosure. The present disclosure described herein can be embodied in various forms other than those described below.

[0026] In the following description and claims, unless defined otherwise, all technical and scientific terms used have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0027] In this disclosure, the term "terminal device" refers to any device with wireless or wired communication capabilities. Examples of terminal devices include user equipment (UE), personal computers, desktops, mobile phones, cellular phones, smartphones, personal digital assistants (PDAs), portable computers, tablets, wearable devices, Internet of Things (IoT) devices, Ultra-Reliable and Low Latency Communications (URLLC) devices, Any Internet of Things (IoE) devices, Machine Type Communications (MTC) devices, in-vehicle devices for V2X communications where X represents pedestrian, vehicle, or infrastructure / network, devices for Integrated Access and Backhaul (IAB), spacecraft or airborne vehicles in Non-Terrestrial Networks (NTN) including Satellites and High Altitude Platforms (HAPs) including Unmanned Aircraft Systems (UAS), and Extended Reality (XR) including different types of reality such as Augmented Reality (AR), Mixed Reality (MR), and Virtual Reality (VR). This includes, but is not limited to, Reality devices, unmanned aerial vehicles (UAVs), commonly known as drones, i.e., aircraft without a human pilot, devices on high-speed trains (HST), image capture devices such as digital cameras, sensors, and gaming devices, music storage and playback devices, and Internet appliances that enable wireless or wired Internet access and browsing. A "terminal device" may also have "multicast / broadcast" capabilities and support public safety and mission-critical applications, V2X applications, transparent IPv4 / IPv6 multicast delivery, IPTV, smart TV, wireless services, over-the-air software delivery, group communications, and IoT applications. It may also incorporate one or more subscriber identity modules (SIMs), known as multi-SIMs. The term "terminal device" may be used interchangeably with UE, mobile station, subscriber station, mobile terminal, user terminal, or wireless device.

[0028] The term "network device" refers to a device capable of providing or hosting a cell or coverage area over which terminal devices can communicate. Examples of network devices include, but are not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), a next generation Node B (gNB), a transmission reception point (TRP), a remote radio unit (RRU), a radio head (RH), a remote radio head (RRH), a low-power node such as an IAB node, a femto node, a pico node, and a reconfigurable intelligent surface (RIS).

[0029] A terminal device or network device may have artificial intelligence (AI) or machine learning capabilities, which typically include models trained from a large amount of collected data for a specific function and can be used to predict some information.

[0030] A terminal device or network device may operate in multiple frequency ranges, such as FR1 (410 MHz to 7125 MHz), FR2 (24.25 GHz to 71 GHz), frequency bands greater than 100 GHz, and terahertz (THz). It can also operate in licensed, unlicensed, and shared spectrum. A terminal device may have multiple connections with network devices in Multi-Radio Dual Connectivity (MR-DC) application scenarios. A terminal device or network device can operate in full duplex, flexible duplex, and cross division duplex modes.

[0031] Embodiments of the present disclosure may be implemented in test equipment such as, for example, a signal generator, a signal analyzer, a spectrum analyzer, a network analyzer, a test terminal equipment, a test network equipment, a channel emulator, and the like.

[0032] In some embodiments, a terminal device may be connected to a first network device and a second network device. One of the first network device and the second network device may be a master node, and the other may be a secondary node. The first network device and the second network device may use different radio access technologies (RATs). In some embodiments, the first network device may be a first RAT device, and the second network device may be a second RAT device. In some embodiments, the first RAT device is an eNB, and the second RAT device is a gNB. Information related to the different RATs may be transmitted to the terminal device from at least one of the first network device and the second network device. In some embodiments, the first information may be transmitted from the first network device to the terminal device, and the second information may be transmitted from the second network device directly or via the first network device to the terminal device. In some embodiments, information related to the terminal device configuration configured by the second network device may be transmitted from the second network device via the first network device. The information regarding the reconfiguration of the terminal device configured by the second network device may be transmitted to the terminal device directly from the second network device or via the first network device.

[0033] In this disclosure, unless the context clearly indicates otherwise, the singular forms "a," "the," and "the" are intended to include the plural. The term "comprises" and variations thereof are interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is interpreted as "based at least in part on." The terms "one embodiment" and "embodiment" are interpreted as "at least one embodiment." The term "another embodiment" is interpreted as "at least one other embodiment." Terms such as "first," "second," etc. may refer to different objects or the same object. The following content may include other definitions, both explicit and implicit.

[0034] In some instances, values, procedures, or devices are referred to as "optimal," "lowest," "highest," "minimum," "maximum," etc. It is understood that such descriptions are intended to indicate choices among multiple functional alternatives used, and that such choices are not necessarily better, smaller, higher, or more preferred than other choices.

[0035] As used herein, the terms "resource," "transmission resource," "uplink resource," or "downlink resource" may refer to any resource for performing communication, such as a time domain resource, a frequency domain resource, a space domain resource, a code domain resource, or any other resource enabling communication. Hereinafter, unless otherwise specified, both frequency domain and time domain resources are used as examples of transmission resources to describe some exemplary embodiments of the present disclosure. It should be noted that the exemplary embodiments of the present disclosure are equally applicable to other resources in other domains. In the context of the present disclosure, the term "common resource" may refer to any resource that can be used or shared among multiple terminal devices. The term "dedicated resource" may refer to any resource used by a specific terminal device. As used herein, the term "physical resource block (PRB)" may refer to an element of resource allocation that includes multiple (e.g., 12) consecutive subcarriers for one slot.

[0036] In this context, the term "hybrid automatic repeat request (HARQ)" as used herein may refer to a combination of high-rate forward error correction (FEC) and automatic repeat request (ARQ) error control. As used herein, the term "HARQ-ACK feedback" or "HARQ-ACK information" may refer to feedback for HARQ, which may include an acknowledgment (ACK) or a non-acknowledgement (NACK). As used herein, the term "power spectral density (PSD)" may refer to a measure of a signal's power content versus frequency. PSD is typically used to characterize wideband random signals. The amplitude of the PSD is normalized by the spectral resolution employed to digitize the signal. As used herein, the term "occupied channel bandwidth (OCB)" may refer to the channel bandwidth requirement of unlicensed frequencies.

[0037] In this context, the term "sidelink" may refer to a proximity-based direct cellular connection. The term "sidelink transmission" may refer to any transmission between end devices (e.g., UEs). Sidelink physical channels include the Physical Sidelink Broadcast Channel (PSBCH), the Physical Sidelink Control Channel (PSCCH), the Physical Sidelink Shared Channel (PSSCH), and the Physical Sidelink Feedback Channel (PSFCH). The PSCCH and PSFCH are independent channels. The PSCCH carries part of the sidelink channel information (SCI), and the other part is transmitted on the PSSCH. As used herein, the term "Physical Sidelink Feedback Channel (PSFCH)" may refer to a sidelink channel carrying HARQ feedback for sidelink transmissions received on the Physical Sidelink Shared Channel (PSSCH). As used herein, the term "PSFCH opportunity" may refer to a time-frequency domain resource in which a PSFCH transmission is feasible. As used herein, the term "transmitting (TX) terminal" may refer to a terminal that can transmit data to another terminal when in sidelink communication with the other terminal. As used herein, the term "receiving (RX) terminal" may refer to a terminal that can receive data from another terminal when in sidelink communication with the other terminal. As used herein, the term "common information" may refer to any information common to a group of terminals, such as common information for satisfying OCB requirements. As used herein, the term "conflict information" may refer to information indicating a transmission conflict on a resource.

[0038] As mentioned above, the existing NR-U channel access framework may not support all the required SL-U features, so some modifications are necessary. Resources for sidelink communication can be scheduled by the network device, which is called Mode 1. Alternatively, resources for sidelink communication can be determined by the UE itself, which is called Mode 2. Specifically, as an enhancement to sidelink communication, coordination between UEs has been proposed to improve reliability for Mode 2 resource allocation. One UE determines a set of resources and transmits that set to another UE, which then takes that set into account when performing resource selection for its own transmission. Sidelink in unlicensed spectrum is supported in both Mode 1 and Mode 2. Regarding PSFCH and SL-HARQ in SL-U, it is worth considering how to satisfy the OCB and PSD requirements for PSFCH transmission. Regarding PSFCH transmission, at least the following solutions can be further considered: Solution (1) Each PSFCH transmission occupies a common interlace and zero, one, or multiple dedicated PRBs. Solution (2) Each PSFCH transmission occupies an interlace and may or may not further apply code domain extension. Solution (3) Each PSFCH transmission occupies some dedicated PRBs and some common PRBs.

[0039] Transmission on common resources may limit the remaining power available for HARQ-ACK information transmission on dedicated resources, thereby affecting PSFCH / HARQ-ACK coverage. Furthermore, it is unclear how to handle PSFCH transmission capacity and prioritization. In some solutions, each PSFCH uses a common interlace and a dedicated PRB for transmission. On the other hand, if a dedicated PRB for the PSFCH and one PRB on a common interlace are within a 1 MHz bandwidth, the transmit power is shared between these two PRBs due to the regulatory PSD limit. As a result, the transmit power of the PSFCH PRB is reduced, resulting in reduced PSFCH coverage or PSFCH performance degradation. In other solutions, the UE multiplexing capacity for the PF0 PSFCH is therefore approximately 1 / 10 of that using a conventional 1-RB PSFCH waveform. For groupcast, PSFCH capacity may be a greater issue because multiple receivers must be hashed to different CS pairs / interlaces within the PSFCH resource pool. For solution (2) above, it is possible to repeat the PSFCH symbol in the time domain and apply time-domain OCC (TD-OCC) to the PSFCH symbol. For both the PF0 and PF2 PSFCHs, the interlaced PSFCH symbol can be repeated 2 / 4 times in the time domain and time-domain OCC 2 / 4 can be applied. In this solution, all IRBs are used to carry the A / N, so the transmit power of the interlaced RBs carrying the A / N is not reduced under the 10 dBm / MHz PSD limit as in solutions (1) and (3). However, this does not solve the PSFCH capacity problem. Another approach is to use additional common interlaces. However, in this case, most of the transmit power may not be used to transmit HARQ-ACK information. In other words, the PSD limit may significantly degrade SL HARQ-ACK detection performance.

[0040] An embodiment of the present disclosure provides a solution for PSFCH transmission. According to an embodiment of the present disclosure, when a terminal device transmits common information on a sidelink, the terminal device determines a first transmission power for the common information based on a reference transmission power and a power reduction value. In this case, the terminal device transmits the common information at the first transmission power. When the terminal device transmits HARQ feedback information, the terminal device transmits the HARQ feedback information at the second transmission power. In this manner, more remaining power can be used for the HARQ feedback information, thereby improving the transmission of the HARQ feedback information. Furthermore, the terminal device transmits the HARQ feedback information on the PSFCH based on priority information associated with the HARQ feedback information. In this manner, the transmission restriction can be resolved.

[0041] The principles and embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0042] Example of a communication network 1 is a schematic diagram of an exemplary communication network 100 in which some embodiments of the present disclosure can be implemented. As shown in FIG. 1, communication network 100 may include network device 120. Communication network 100 may further include terminal devices 110-1, 110-2, ..., 110-N (collectively referred to as "terminal devices 100"), where N is an integer. In some embodiments, network device 120 may provide a cell for serving one or more terminal devices. Alternatively, terminal device 110 may be outside the coverage area of ​​network device 120.

[0043] 1 is shown for illustrative purposes only and is not intended to limit the present disclosure. Communications network 100 may include any suitable number of network devices and / or terminal devices and / or cells adapted to implement embodiments of the present disclosure.

[0044] In some embodiments, terminal device 110 and network device 120 may communicate with each other via channels, such as wireless communication channels over an air interface (e.g., a Uu interface). The wireless communication channels may include a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), a physical random access channel (PRACH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), and a physical broadcast channel (PBCH). Of course, any other suitable channels may also be used.

[0045] Communications in communication network 100 may conform to any suitable standard, including, but not limited to, Global System for Mobile Communications (GSM), Long Term Evolution (LTE), LTE-Evolution, LTE-Advanced (LTE-A), New Radio (NR), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), GSM EDGE Radio Access Network (GERAN), Machine Type Communication (MTC), etc. Embodiments of the present disclosure may be performed in accordance with any currently known or future-developed generation of communication protocols. Examples of communication protocols include, but are not limited to, first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or sixth generation (6G) networks.

[0046]

[0023] Embodiments of the present disclosure will now be described in detail. Reference is first made to Figure 2, which illustrates a signaling diagram illustrating a process 200 between a terminal device and a network device according to some exemplary embodiments of the present disclosure. For purposes of discussion only, process 200 will be described with reference to Figure 1. For example, process 200 may involve terminal device 110-1, terminal device 110-2, and network device 120.

[0047] The terminal device 110-1 may be configured with multiple sidelink resources. For example, the terminal device 110-1 may be configured with a set of common resources. The set of common resources may be used to transmit common information. In some embodiments, the set of common resources may include multiple interlaced PRBs. Alternatively, the set of common resources may include multiple PRBs located at at least one boundary of a resource block set for sidelink transmission. The terminal device 110-1 may also be configured with a set of dedicated resources. For example, the set of dedicated resources may include multiple PRBs. FIG. 3A illustrates a schematic diagram 300 of resource allocation according to an exemplary embodiment of the present disclosure. As shown in FIG. 3A, the terminal device 110-1 and the terminal device 110-2 may be configured with a set of common resources 310 including multiple interlaced PRBs (shown as PRB 3001, PRB 3002, PRB 3003, and PRB 3005) within a resource block set 300. 3B is a schematic diagram of resource allocation according to another exemplary embodiment of the present disclosure. Terminal device 110-1 and terminal device 110-2 may be configured to have a set of common resources 311. As shown in FIG. 3B, set of common resources 311 may include PRBs 3005 and 3006 located at the boundaries of resource block set 305. As shown in FIG. 3A and 3B, terminal device 110-1 may be configured to have a set of dedicated resources 320. A set of dedicated resources 330 may be configured for terminal device 110-2. Note that the number of PRBs / resources shown in FIG. 3A and 3B is for illustrative purposes only and not limiting.

[0048] The terminal device 110-1 obtains (2005) a configuration. The configuration includes power control information for sidelink transmissions associated with the terminal device 110-1. In some embodiments, the configuration may be obtained from higher layer parameters. For example, the configuration may be obtained from radio resource control (RRC) parameters. In some embodiments, the network device 120 may transmit (2010) the configuration to the terminal device 110-1. Alternatively, the configuration may be pre-configured in the terminal device 110-1.

[0049] In some embodiments, the setting may indicate a reference transmit power. For example, the reference transmit power may be P PSFCH,one =P O,PSFCH +10log 10 (2 μ )+α PSFCH PL [dBm], where P O,PSFCH represents the value of dl-P0-PSFCH, and α PSFCH represents the value of dl-Alpha-PSFCH if provided, otherwise α PSFCH =1, and the RS resources are those used by the UE to determine the power of PUSCH transmissions scheduled by DCI format 0_0 in serving cell c when the UE is configured to monitor the PDCCH for detection of DCI format 0_0 in serving cell c, and the RS resources correspond to SS / PBCH blocks used by the UE to acquire the MIB when the UE is not configured to monitor the PDCCH for detection of DCI format 0_0 in serving cell c, except that if an active SL BWP is in serving cell c, PL=PL b,f,c (q d ) Alternatively, the reference transmit power is P PSFCH,common =P O,PSFCH +10log 10 (2 μ *N1)+α PSFCH ·PL [dBm], where N1 can represent the number of common resources for the transmission of common information.

[0050] If the common information is transmitted on a set of common resources (e.g., set of common resources 310 or 311), terminal device 110-1 may determine (2020) a first transmit power based on the reference transmit power and a power reduction value. The setting may indicate the power reduction value. For example, the power reduction value may be a Y dBm power reduction, where Y is an integer, e.g., Y may be 3 or 10. For example, in some embodiments, the first transmit power may be determined as follows: P PSFCH,common =P O,PSFCH +10log 10 (2 μ *N1)+α PSFCH PL-Y [dBm]. In some embodiments, terminal device 110-1 may reduce the transmit power on each resource of the set of common resources. Alternatively, terminal device 110-1 may reduce the transmit power on a subset of the set of common resources.

[0051] In some embodiments, the terminal device 110-1 may determine the first transmission power based on the reference transmission power and the power reduction value if a certain condition is met. In other words, the determination of the first transmission power may be triggered based on a specific condition. For example, the condition may be related to the PSD. In some embodiments, the condition may be that the power in a predetermined bandwidth exceeds a PSD limit threshold. In this case, if the power in the predetermined bandwidth exceeds the PSD limit threshold, the terminal device 110-1 may reduce the reference transmission power to obtain the first transmission power. As an example, as shown in FIG. 4, if the power in a bandwidth 410 (e.g., 1 MHz) exceeds a PSD limit value (e.g., 10 dBm / MHz), the terminal device 110-1 may reduce the reference transmission power to obtain the first transmission power. In this way, the PSD limit requirement can be met.

[0052] The terminal device 110-1 transmits the common information to the terminal device 110-2 at the first transmission power (2040). In this way, more remaining power can be used for HARQ-ACK / NACK information on the dedicated resources.

[0053] In some other embodiments, the terminal device 110-1 may determine 2030 a set of waveforms for transmitting the common information. The set of waveforms may have different phase positions. For example, the set of waveforms or phase positions may be determined based on the identity (ID) of the terminal device 110-1. Note that the ID may be any suitable ID capable of identifying the terminal device 110-1. In this manner, in-band emissions (IBE) can be mitigated. In some embodiments, the common information may be transmitted in the set of waveforms at a first transmit power. Alternatively, the common information may be transmitted in the set of waveforms without reducing the transmit power. For example, the common information may be transmitted in the set of waveforms at a reference transmit power. In other words, waveforms with different phase positions for the common information and reduced transmit power for the common information may be combined in one exemplary embodiment or implemented separately in different embodiments.

[0054] If the HARQ-ACK information is transmitted on a set of dedicated resources (e.g., set of dedicated resources 320), terminal device 110-1 may determine a second transmit power for the HARQ-ACK information (2050). In some embodiments, the HARQ-ACK information may indicate a HARQ-ACK. Alternatively, the HARQ-ACK information may indicate a HARQ-NACK. Terminal device 110-1 transmits the HARQ-ACK information to terminal device 110-2 at the second transmit power (2060). As described above, because the transmit power for common information is reduced, more remaining power can be used for HARQ-ACK / NACK information on the dedicated resources. In this case, the number of PSFCH transmissions of the HARQ-ACK information may increase as a result.

[0055] In some embodiments, the setting may indicate a power increase value. For example, the power increase value may be an X dBm power boost, where X is an integer, e.g., X may be 3 or 10. In this case, the second transmit power may be determined based on the reference transmit power and the power increase value. For example, the second transmit power may be determined as follows: P PSFCH,one =P O,PSFCH +10log 10 (2 μ )+α PSFCH PL+X [dBm]. In some embodiments, the terminal device 110-1 may increase the transmission power on each resource of the set of dedicated resources. Alternatively, the terminal device 110-1 may increase the transmission power on a subset of the set of dedicated resources. In this way, more remaining power can be used for HARQ-ACK / NACK information on the dedicated resources. In this case, the coverage of the PSFCH transmission of HARQ-ACK information can be increased.

[0056] In some embodiments, the power increase value may be compared to a reference transmit power on the common resources. For example, the energy per resource element (EPRE) (in dBm) on each dedicated resource may be equal to the power increase value plus the EPRE (in dBm) on each common resource. In some embodiments, the second transmit power may be less than a PSD limit threshold, e.g., (10+10*log10((N2*12*15*10^3*2^μ) / (10^6)) dBm = (10*log10(N2*18*2^μ)-10) dBm = 10*log10(N2*1.8*2^μ) dBm.

[0057] In some embodiments, a set of reserved resources adjacent to the set of common resources may be reserved as a guard band. In some embodiments, the reservation of resources adjacent to the set of common resources and the reduced transmit power for the common information may be combined in one exemplary embodiment or may be implemented separately in different embodiments. In some embodiments, terminal device 110-1 may obtain another configuration indicating the set of reserved resources adjacent to the set of common resources. In some embodiments, the another configuration may be obtained from a higher layer parameter. Alternatively, network device 120 may transmit the another configuration to terminal device 110-1. In this way, PSD restriction requirements can be met and IBE can be mitigated.

[0058] In some embodiments, the set of reserved resources may include a predetermined number of PRBs adjacent to each resource in the set of common resources. For example, to ensure that the power in a 1 MHz bandwidth is below the PSD limit, k PRBs adjacent to each common resource may be reserved as guard PRBs, where k may be an integer. As an example, when k is 1, PRB 5001 around the common resource, PRB 5002 and PRB 5003 around the common resource, PRB 5004 and PRB 5005 around the common resource, and PRB 5006 and PRB 5007 around the common resource may be reserved, as shown in FIG. 5A. Note that the PRBs shown in FIG. 5A are for illustrative purposes only and not for limitation.

[0059] In some other embodiments, the set of reserved resources may include a predetermined bandwidth adjacent to the set of common resources. For example, the predetermined bandwidth may be 1 MHz. The predetermined bandwidth may include the common resources. Alternatively, the predetermined bandwidth may not include the common resources. As an example, as shown in FIG. 5B , a bandwidth 510 around the common resources, a bandwidth 520 around the common resources, and a bandwidth 530 around the common resources may be reserved. Note that the PRBs and bandwidths shown in FIG. 5B are for illustrative purposes only and not for limitation.

[0060] According to the embodiments of the present disclosure described with reference to Figures 2 to 5B, the transmission power of the common information can be reduced, thus allowing more remaining power to be used for the HARQ-ACK information.

[0061]

[0041] Embodiments of the present disclosure will now be described in detail. Reference is made to Figure 6, which illustrates a signaling diagram illustrating a process 600 between a terminal device and a network device according to some exemplary embodiments of the present disclosure. For purposes of discussion only, process 600 will be described with reference to Figure 1. For example, process 600 may involve terminal device 110-1 and terminal device 110-2.

[0062] Terminal device 110-1 determines multiple PSFCH transmissions in the PSFCH opportunity (6010). The multiple PSFCH transmissions are used for one or more of HARQ-ACK information, conflict information, and common OCB information.

[0063] In some embodiments, terminal device 110-1 may determine the number of PSFCH transmissions for the common OCB information. In some embodiments, the number of PSFCH transmissions for the common OCB information may be a predetermined number. For example, if the transmission for the common OCB information includes a predetermined number of coded data or sequences, the number of PSFCH transmissions for the common OCB information may be a predetermined number. In some embodiments, the predetermined number may be 1. In some other embodiments, the number of PSFCH transmissions for the common OCB information may be N1, where N1 may be an integer. For example, if the transmission for the common OCB information includes N1 repetitions of one coded data or sequence, the number of PSFCH transmissions for the common OCB information may be N1. Alternatively, the number of PSFCH transmissions for the common OCB information may be preset.

[0064] Terminal device 110-1 performs PSFCH transmission for the common OCB information with terminal device 110-1 based on priority information associated with the common OCB information (6020). In some embodiments, terminal device 110-1 may determine multiple simultaneous PSFCH transmissions. In this case, if terminal device 110-1 determines to drop one or more of the simultaneous PSFCH transmissions, terminal device 110-1 may determine that the priority of the PSFCH transmission for the common OCB information is higher than the priority of the PSFCH transmission for the HARQ-ACK information and the conflict information. In other words, the PSFCH transmission for the common OCB information may be prioritized over the PSFCH transmission for the HARQ-ACK information and the conflict information.

[0065] In some embodiments, terminal device 110-1 may determine one or more PSFCH transmissions to drop based on the number of PSFCH transmissions supported by the first terminal device based on the capabilities of the first terminal device. Alternatively, or additionally, the one or more PSFCH transmissions to drop may be determined based on the limited total transmit power of terminal device 110-1. In some other embodiments, terminal device 110-1 may determine one or more PSFCH transmissions to drop based on a PSD power limit. For example, the one or more PSFCH transmissions to drop may be determined based on a PSD power limit within 1 MHz. In some embodiments, PSFCH transmissions for common OCB information may be performed regardless of PSFCH transmissions with HARQ-ACK information and conflict information. In other words, common OCB information may always be transmitted. In some other embodiments, the priority value of PSFCH transmissions for common OCB information may be set to a preset value. For example, the priority value of common information transmissions may be the lowest value, such as "1." In this way, OCB requirements can be met and transmission limitations can be addressed.

[0066] In some embodiments, terminal device 110-1 may determine an overlap time between a PSFCH transmission for the common OCB information and a PSFCH transmission for at least one of the HARQ-ACK information and the conflict information. In this case, in some embodiments, terminal device 110-1 may determine that the priority of the PSFCH transmission for the common OCB information is higher than the priority of the PSFCH transmission for at least one of the HARQ-ACK information and the conflict information. In other words, terminal device 110-1 may prioritize the PSFCH transmission for the common information.

[0067] Alternatively, terminal device 110-1 may determine an overlap time between PSFCH reception for the common OCB information and PSFCH transmission for at least one of HARQ-ACK information and conflict information. In this case, in some embodiments, terminal device 110-1 may determine that reception of the common OCB information is skipped. In other words, terminal device 110-1 may ignore PSFCH reception for the common information. In this way, OCB requirements can be met and overlapping transmissions and receptions can be addressed.

[0068] According to the embodiment of the present disclosure described with reference to Figure 6, the transmission power for common information can be prioritized, and in this way, the OCB requirement can be met.

[0069] The embodiments of the present disclosure described with reference to Figure 6 may be implemented independently. Table 1 below shows an example embodiment that prioritizes common OCB information and does not perform power reduction. JPEG2025540274000002.jpg255168JPEG2025540274000003.jpg254165JPEG2025540274000004.jpg92168

[0070] Alternatively, the embodiment of the present disclosure described with reference to Figure 6 and the embodiment of the present disclosure described with reference to Figure 2 may be implemented together. Table 2 below shows an example of prioritization and power reduction of common OCB information. JPEG2025540274000005.jpg247168JPEG2025540274000006.jpg254164JPEG2025540274000007.jpg140168

[0071] 7 illustrates a flowchart of an exemplary method 700 according to one embodiment of the present disclosure. Method 700 may be implemented in any suitable terminal device. For illustrative purposes only, method 700 may be implemented in terminal device 110-1 shown in FIG. 1 .

[0072] In block 710, terminal device 110-1 obtains a configuration including power control information for sidelink transmissions associated with terminal device 110-1. In block 720, terminal device 110-1 may determine whether to transmit common information.

[0073] If the common information is transmitted on a set of common resources, terminal device 110-1 may determine a first transmit power based on the reference transmit power and a power reduction value in power control information in block 730. In some embodiments, the power control information indicates the power reduction value for the sidelink transmission on the set of common resources. In block 740, terminal device 110-1 transmits the common information to terminal device 110-2 on the set of common resources at the first transmit power.

[0074] If the HARQ-ACK information is to be transmitted on the set of dedicated resources, terminal device 110-1 may determine a second transmit power in block 750. In block 760, terminal device 110-1 transmits the HARQ-ACK information to terminal device 110-2 on the set of dedicated resources at the second transmit power.

[0075] In some embodiments, the set of common resources comprises a plurality of interlaced physical resource blocks (PRBs) or a plurality of PRBs located at at least one boundary of a set of resource blocks for sidelink transmissions, while in some embodiments, the set of dedicated resources comprises a plurality of PRBs.

[0076] In some embodiments, the second transmit power may be determined based on the reference transmit power and a power increase value indicated in the power control information. In some embodiments, the second transmit power may be less than a power spectral density (PSD) limit threshold.

[0077] In some embodiments, terminal device 110-1 may determine the first transmit power based on the power reduction value and the reference transmit power if a PSD-related condition is met, in some embodiments, the PSD-related condition being that the power in a predetermined bandwidth exceeds a PSD limit threshold.

[0078] In some embodiments, terminal device 110-1 may obtain another configuration indicating that a set of reserved resources adjacent to the set of common resources is reserved. In some embodiments, the set of reserved resources includes a predetermined number of PRBs adjacent to each resource in the set of common resources. In some embodiments, the set of reserved resources includes a predetermined bandwidth adjacent to the set of common resources.

[0079] In some embodiments, terminal device 110-1 transmits the common information in a set of waveforms on the set of common resources, the set of waveforms having different phase positions. In some embodiments, terminal device 110-1 may determine the set of waveforms based on the identity of the first terminal device.

[0080] 8 illustrates a flowchart of an exemplary method 800 according to one embodiment of the present disclosure. Method 800 may be implemented in any suitable terminal device. For illustrative purposes only, method 800 may be implemented in terminal device 110-1 shown in FIG. 1 .

[0081] In block 810, the terminal device 110-1 determines multiple physical sidelink feedback channel (PSFCH) transmissions in PSFCH opportunities to be used for at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, conflict information, and common occupied channel bandwidth (OCB) information.

[0082] In block 820, terminal device 110-1 performs PSFCH transmissions for the common OCB information with terminal device 110-2 based on priority information associated with the common OCB information. In some embodiments, the number of PSFCH transmissions for the common OCB information is a predetermined number. In some embodiments, the number of PSFCH transmissions for the common OCB information is N1, where N1 is an integer. In some embodiments, the number of PSFCH transmissions for the common OCB information is preset.

[0083] In some embodiments, terminal device 110-1 may determine multiple simultaneous PSFCH transmissions, in which case, if at least one of the simultaneous PSFCH transmissions is dropped, terminal device 110-1 may determine that the priority of the PSFCH transmission for the common OCB information is higher than the priority of the PSFCH transmission for the HARQ-ACK information and the conflict information.

[0084] In some embodiments, terminal device 110-1 may determine that at least one of the simultaneous PSFCH transmissions is to be dropped based on at least one of the number of PSFCH transmissions supported by the first terminal device based on the capabilities of the first terminal device, the limited total transmit power of the first terminal device, and a power spectral density (PSD) power limitation.

[0085] In some embodiments, the PSFCH transmission for the common OCB information is performed regardless of the PSFCH transmission for the HARQ-ACK information and the conflict information, and in some embodiments, the priority value of the PSFCH transmission for the common OCB information is set to a pre-configured value.

[0086] In some embodiments, if there is overlapping time between the PSFCH transmission for the common OCB information and the PSFCH transmission for at least one of the HARQ-ACK information and the conflict information, terminal device 110-1 may determine that the priority of the PSFCH transmission for the common OCB information is higher than the priority of the PSFCH transmission for at least one of the HARQ-ACK information and the conflict information. In some embodiments, if there is overlapping time between the PSFCH reception for the common OCB information and the PSFCH transmission for at least one of the HARQ-ACK information and the conflict information, terminal device 110-1 may determine to skip the reception of the common OCB information.

[0087] 9 illustrates a flowchart of an exemplary method 900 according to one embodiment of the present disclosure. The method 900 may be implemented in any suitable terminal device. For illustrative purposes only, the method 900 may be implemented in the network device 120 shown in FIG. 1 .

[0088] In some embodiments, in block 910, the network device 120 may transmit a resource configuration to the terminal device 110-1. The resource configuration may indicate a set of dedicated resources and a set of common resources. In some embodiments, the set of common resources includes multiple interlaced physical resource blocks (PRBs) or multiple PRBs located on at least one boundary of a set of resource blocks for sidelink transmission. In some embodiments, the set of dedicated resources includes multiple PRBs.

[0089] In block 920, the network device 120 transmits a configuration including power control information for sidelink transmissions associated with the terminal device 110-1. A first transmit power for transmitting common information on a set of common resources is determined based on a reference transmit power and a power decrease value in the power control information. A second transmit power for transmitting HARQ-ACK information on a set of dedicated resources is determined based on a reference transmit power and a power increase value. In some embodiments, the power control information indicates the power decrease value for the sidelink transmission on the set of common resources. In some embodiments, the power control information indicates a power increase value. In some embodiments, the network device 120 may transmit another configuration indicating that a set of reserved resources adjacent to the set of common resources is reserved for the terminal device 110-1.

[0090] 10 is a schematic block diagram of an apparatus 1000 suitable for implementing embodiments of the present disclosure. The apparatus 1000 can be considered another exemplary implementation of the terminal device 110 or the network device 120 shown in FIG. 1. Thus, the apparatus 1000 can be implemented in, or at least as part of, the terminal device 110 or the network device 120.

[0091] As shown, the apparatus 1000 comprises a processor 1010, a memory 1020 coupled to the processor 1010, a suitable transmitter (TX) / receiver (RX) 1040 coupled to the processor 1010, and a communication interface coupled to the TX / RX 1040. The memory 1010 stores at least a portion of a program 1030. The TX / RX 1040 is for bidirectional communication. The TX / RX 1040 has at least one antenna to facilitate communication, although in practice the access nodes referred to in this disclosure may have multiple antennas. The communication interface may represent any interface required for communication with other network elements, such as, for example, an X2 / Xn interface for bidirectional communication between eNBs / gNBs, an S1 / NG interface for communication between a Mobility Management Entity (MME) / Access and Mobility Management Function (AMF) / SGW / UPF and an eNB / gNB, an Un interface for communication between an eNB / gNB and a relay node (RN), or a Uu interface for communication between an eNB / gNB and a terminal device.

[0092] The program 1030 is assumed to include program instructions that, when executed by an associated processor 1010, cause the device 1000 to operate in accordance with embodiments of the present disclosure, as described herein with reference to FIGS. 1-9. Embodiments of the present disclosure may be implemented by computer software executable by the processor 1010 of the device 1000, by hardware, or by a combination of software and hardware. The processor 1010 may be configured to implement various embodiments of the present disclosure. Furthermore, the combination of the processor 1010 and the memory 1020 may form a processing means 1050 suitable for implementing various embodiments of the present disclosure.

[0093] The memory 1020 may be of any type suitable for a local technology network and may be implemented using any suitable data storage technology, such as, by way of non-limiting example, non-transitory computer-readable storage media, semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory. While only one memory 1020 is shown in the device 1000, the device 1000 may have multiple physically distinct memory modules. The processor 1010 may be of any type suitable for a local technology network and may include, by way of non-limiting example, one or more of a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. The device 1000 may have multiple processors, such as application-specific integrated circuit chips that are time-slaved to a clock that synchronizes the main processor.

[0094] In some embodiments, a first terminal device comprises circuitry configured to: obtain a configuration including power control information for sidelink transmissions associated with the first terminal device; transmit common information to a second terminal device at a first transmit power in accordance with determining common information to be transmitted on a set of common resources, the first transmit power being determined based on a reference transmit power and a power decrement value in the power control information; and transmit hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to the second terminal device at a second transmit power in accordance with determining hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to be transmitted on a set of dedicated resources. In some embodiments, the circuitry may be configured to perform the above method.

[0095] In some embodiments, the first terminal device comprises circuitry configured to: determine, at the first terminal device, physical sidelink feedback channel (PSFCH) transmissions in PSFCH opportunities, where the PSFCH transmissions are used for at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, conflict information, and common occupied channel bandwidth (OCB) information; and perform PSFCH transmissions for the common OCB information with the second terminal device based on priority information associated with the common OCB information. In some embodiments, the circuitry may be configured to perform the above method.

[0096] In some embodiments, the network device comprises circuitry configured to perform transmitting a configuration including power control information for sidelink transmissions associated with a terminal device, wherein a first transmit power for transmitting the common information on a set of common resources is determined based on a reference transmit power and a power decrement value in the power control information, and a second transmit power for transmitting hybrid-automatic repeat request acknowledgment (HARQ-ACK) information on a set of dedicated resources is determined based on the reference transmit power and a power increase value. In some embodiments, the circuitry may be configured to perform the above method.

[0097] In some embodiments, the network device comprises circuitry configured to: transmit to the terminal device a configuration indicating a bandwidth part (BWP) associated with sounding reference signal (SRS) positioning. In some embodiments, the circuitry may be configured to perform the above method.

[0098] The term "circuitry" as used in this disclosure may refer to a hardware circuit and / or a combination of a hardware circuit and software. For example, a circuit may be a combination of analog and / or digital hardware circuitry and software / firmware. As another example, a circuit may be any portion of a hardware processor with software, where the hardware processor includes digital signal processor(s), software, and memory(s) that work together to cause a device, such as a terminal device or network device, to perform various functions. As yet another example, a circuit may be a hardware circuit and / or processor, such as a microprocessor or portion of a microprocessor, that requires software / firmware to operate, but the software may not be present when not necessary for operation. As used in this disclosure, the term circuitry also includes simply a hardware circuit or processor(s) or portion of a hardware circuit or processor(s) and its (or their) associated software and / or firmware implementation.

[0099] In summary, the embodiments of the present disclosure provide the following solutions:

[0100] In one solution, a terminal device comprises a processor configured to cause the terminal device to obtain a configuration including power control information for sidelink transmissions associated with a first terminal device; to determine common information to be transmitted on a set of common resources and transmit the common information to another terminal device at a first transmission power, the first transmission power being determined based on a reference transmission power and a power decrement value in the power control information; and to determine hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to be transmitted on a set of dedicated resources and transmit the HARQ-ACK information to the other terminal device at a second transmission power.

[0101] In this solution, the set of common resources includes a plurality of interlaced physical resource blocks (PRBs), or a plurality of PRBs located at at least one boundary of a set of resource blocks for sidelink transmission.

[0102] In this solution, the set of dedicated resources includes multiple PRBs.

[0103] In this solution, the power control information indicates the power reduction value for the sidelink transmission on the set of common resources.

[0104] In this solution, the second transmission power is determined based on the reference transmission power and a power increase value indicated in the power control information.

[0105] In the solution, the second transmit power is less than a power spectral density (PSD) limit threshold.

[0106] In the solution, the processor is further configured to cause the terminal device to determine the first transmission power based on the power reduction value and the reference transmission power in accordance with a determination that the condition regarding the PSD is satisfied.

[0107] In this solution, the condition for the PSD is that the power in a given bandwidth exceeds a PSD limit threshold.

[0108] In the solution, the processor is further configured to cause the terminal device to obtain another setting indicating that a set of reserved resources adjacent to the set of common resources are reserved.

[0109] In the solution, the set of reserved resources includes a predetermined number of PRBs adjacent to each resource in the set of common resources, or the set of reserved resources includes a predetermined bandwidth adjacent to the set of common resources.

[0110] In the solution, the processor is further configured to cause the terminal device to transmit the common information in a set of waveforms on the set of common resources, the set of waveforms having different phase positions.

[0111] In the solution, the processor is further configured to cause the terminal device to determine a set of waveforms based on an identity of the first terminal device.

[0112] In another solution, a terminal device includes a processor configured to determine a plurality of physical sidelink feedback channel (PSFCH) transmissions in PSFCH opportunities, the PSFCH transmissions being used for at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, conflict information, and common occupied channel bandwidth (OCB) information, and to perform PSFCH transmissions for the common OCB information with a second terminal device based on priority information associated with the common OCB information.

[0113] In this solution, the number of PSFCH transmissions for the common OCB information is a predetermined number, or the number of PSFCH transmissions for the common OCB information is N1, where N1 is an integer, or the number of PSFCH transmissions for the common OCB information is preset.

[0114] In the solution, the processor is further configured to cause the terminal device to determine multiple simultaneous PSFCH transmissions and, according to a determination that at least one of the simultaneous PSFCH transmissions has been dropped, determine that a priority of the PSFCH transmission for the common OCB information is higher than a priority of a PSFCH transmission for the HARQ-ACK information and the conflict information.

[0115] In the solution, the processor is further configured to cause the terminal device to determine that at least one of the simultaneous PSFCH transmissions is to be dropped based on at least one of the number of PSFCH transmissions supported by the first terminal device based on the capabilities of the first terminal device, the limited total transmit power of the first terminal device, and a power spectral density (PSD) power limitation.

[0116] In this solution, the PSFCH transmission for the common OCB information is performed regardless of the PSFCH transmission for the HARQ-ACK information and the conflict information, or the priority value of the PSFCH transmission for the common OCB information is set to a pre-configured value.

[0117] In the solution, the processor is further configured to cause the terminal device to determine, in accordance with a determination that there is an overlap time between the PSFCH transmission for the common OCB information and the PSFCH transmission for at least one of the HARQ-ACK information and the conflict information, that the priority of the PSFCH transmission for the common OCB information is higher than the priority of the PSFCH transmission for at least one of the HARQ-ACK information and the conflict information.

[0118] In the solution, the processor is further configured to cause the terminal device to decide to skip the reception of the common OCB information in accordance with a determination that there is an overlap time between PSFCH reception for the common OCB information and PSFCH transmission for at least one of the HARQ-ACK information and the conflict information.

[0119] In another solution, the network device comprises a processor, and the processor is configured to cause the network device to transmit a configuration including power control information for sidelink transmissions associated with the terminal device 110-1, wherein a first transmit power for transmitting the common information on a set of common resources is determined based on a reference transmit power and a power decrease value in the power control information, and a second transmit power for transmitting HARQ-ACK information on a set of dedicated resources is determined based on the reference transmit power and a power increase value.

[0120] In this solution, the power control information indicates the power reduction value for the sidelink transmission on the set of common resources.

[0121] In this solution, the power control information indicates a power increase value.

[0122] In the solution, the processor is further configured to cause the network device to send another setting indicating that a set of reserved resources adjacent to the set of common resources is reserved to the terminal device.

[0123] In the solution, the processor is further configured to cause the network device to transmit the resource configuration to the terminal device.

[0124] In this solution, the resource configuration can indicate a set of dedicated resources and a set of common resources.

[0125] In this solution, the set of common resources includes a plurality of interlaced physical resource blocks (PRBs), or a plurality of PRBs located at at least one boundary of a set of resource blocks for sidelink transmission.

[0126] In this solution, the set of dedicated resources includes multiple PRBs.

[0127] Another solution is a computer-readable medium having stored thereon instructions that, when executed on at least one processor, cause the at least one processor to perform any of the methods described above.

[0128] In general, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described using block diagrams, flowcharts, or some other pictorial representations, it should be understood that the blocks, devices, systems, techniques, or methods described in this disclosure may be implemented in, by way of non-limiting example, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller, or other computing device, or some combination thereof.

[0129] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions (e.g., computer-executable instructions included in program modules) that execute on a device by a target real or virtual processor to perform the processes or methods described above with reference to FIGS. 1-9. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split among program modules as desired in various embodiments. The machine-executable instructions for the program modules may be executed in local or distributed devices. In a distributed device, the program modules may be located in both local and remote storage media.

[0130] Program code for implementing the methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, so that when executed by the processor or controller, the program code performs the functions / acts specified in the flowcharts and / or block diagrams. The program code may be executed entirely on a machine, partially on a machine, as a stand-alone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0131] The program code may be embodied in a machine-readable medium, which may be any tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium includes, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More specific examples of machine-readable storage media include an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0132] Furthermore, although operations are described in a particular order, this should not be understood as requiring such operations to be performed in the particular order shown, or sequentially, or that all of the operations shown be performed, to achieve desirable results. In certain situations, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above description, these should not be construed as limiting the scope of the disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.

[0133] Although the present disclosure has been described in language specific to structural features and / or methodological operations, it is to be understood that the present disclosure, which is limited to the appended claims, is not necessarily limited to the specific features or operations described above. Rather, the specific features and operations described above are disclosed as example forms of implementing the claims.

Claims

1. A terminal device including a processor, the processor comprising: obtaining a configuration including power control information for sidelink transmissions associated with the terminal device; transmitting the common information to a second terminal device at a first transmission power according to determining common information to be transmitted on a set of common resources, the first transmission power being determined based on a reference transmission power and a power decrement value in the power control information; transmitting hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to the second terminal device at a second transmit power in accordance with determining the HARQ-ACK information to be transmitted on a set of dedicated resources; The terminal device is configured to cause the terminal device to perform the following.

2. The set of common resources includes: multiple interlaced physical resource blocks (PRBs), or a plurality of PRBs located at at least one boundary of a set of resource blocks for sidelink transmissions; The terminal device according to claim 1 .

3. the set of dedicated resources includes a plurality of PRBs; The terminal device according to any one of claims 1 to 2.

4. the power control information indicates the power reduction value for the sidelink transmission on the set of common resources. The terminal device according to any one of claims 1 to 3.

5. The terminal device according to any one of claims 1 to 4, wherein the second transmission power is determined based on the reference transmission power and a power increase value indicated in the power control information.

6. the second transmit power is less than a power spectral density (PSD) limit threshold. The terminal device according to claim 5.

7. The processor: and further configured to cause the terminal device to determine the first transmission power based on the power reduction value and the reference transmission power in accordance with a determination that the condition regarding the PSD is satisfied. The terminal device according to any one of claims 1 to 6.

8. The PSD condition is that the power in a predetermined bandwidth exceeds a PSD limit threshold. The terminal device according to claim 7.

9. The processor: and further configured to cause the terminal device to obtain another configuration indicating that a set of reserved resources adjacent to the set of common resources is reserved. The terminal device according to any one of claims 1 to 8.

10. the set of reserved resources includes a predetermined number of PRBs adjacent to each resource in the set of common resources; or the set of reserved resources includes a predetermined bandwidth adjacent to the set of common resources; The terminal device according to claim 9.

11. The processor: and causing the terminal device to transmit the common information on a set of waveforms on the set of common resources, the set of waveforms having different phase positions. The terminal device according to any one of claims 1 to 10.

12. A terminal device including a processor, the processor comprising: determining a plurality of physical sidelink feedback channel (PSFCH) transmissions in PSFCH opportunities, the PSFCH transmissions being used for at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, conflict information, and common occupied channel bandwidth (OCB) information; performing PSFCH transmission for the common OCB information with a second terminal device based on priority information associated with the common OCB information; The terminal device is configured to cause the terminal device to perform the following.

13. The processor: determining a plurality of simultaneous PSFCH transmissions; determining, in accordance with a determination that at least one of the simultaneous PSFCH transmissions has been dropped, that a priority of the PSFCH transmission for the common OCB information is higher than a priority of PSFCH transmissions for the HARQ-ACK information and the conflict information; The terminal device is further configured to: The terminal device according to claim 12.

14. The processor: the number of PSFCH transmissions supported by the terminal device based on the capabilities of the terminal device; and a limited total transmission power of the terminal device; Power Spectral Density (PSD) power limit; determining that at least one of the simultaneous PSFCH transmissions is to be dropped based on at least one of The terminal device is further configured to: The terminal device according to claim 13.

15. The PSFCH transmission for the common OCB information is performed independently of the PSFCH transmission for the HARQ-ACK information and the conflict information, or a priority value of the PSFCH transmission for the common OCB information is set to a predetermined value; The terminal device according to claim 13.

16. The processor: determining, in accordance with determining that there is an overlap time between the PSFCH transmission for the common OCB information and a PSFCH transmission for at least one of the HARQ-ACK information and the conflict information, that a priority of the PSFCH transmission for the common OCB information is higher than a priority of a PSFCH transmission for at least one of the HARQ-ACK information and the conflict information; The terminal device is further configured to: The terminal device according to claim 12.

17. The processor: determining to skip the reception of the common OCB information in accordance with determining that there is an overlap time between a PSFCH reception for the common OCB information and a PSFCH transmission for at least one of the HARQ-ACK information and the conflict information; The terminal device is further configured to: The terminal device according to claim 12.

18. obtaining, at a first terminal device, a configuration including power control information for sidelink transmissions associated with the first terminal device; transmitting the common information to a second terminal device at a first transmission power according to determining common information to be transmitted on a set of common resources, the first transmission power being determined based on a reference transmission power and a power decrement value in the power control information; transmitting hybrid-automatic repeat request acknowledgment (HARQ-ACK) information to the second terminal device at a second transmit power in accordance with determining the HARQ-ACK information to be transmitted on a set of dedicated resources; A communication method, including:

19. determining, in the first terminal device, a plurality of physical sidelink feedback channel (PSFCH) transmissions in PSFCH opportunities, the plurality of PSFCH transmissions being used for at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information, conflict information, and common occupied channel bandwidth (OCB) information; performing PSFCH transmission for the common OCB information with a second terminal device based on priority information associated with the common OCB information; A communication method including:

20. 20. The method of claim 19, wherein instructions are stored on at least one processor that, when executed on at least one processor, cause the at least one processor to perform the method of claim 18 or 19. Computer-readable medium.

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