Collision indication method, device and electronic device

Abstract

The present application discloses a collision indication method, an apparatus and an electronic device, which belong to the field of communication technology. The collision indication method is executed by a first terminal, and includes instructing a second terminal that resources or transmissions collide when it is determined that resources or transmissions collide, and includes any one of sending a collision indication signaling to the second terminal, performing the collision indication over a physical sidelink channel PSxCH, and performing the collision indication over a physical sidelink feedback channel PSFCH resource corresponding to the collision resource.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from Chinese Patent Application No. 202110184965.0 filed in China on February 10, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of communications technology, and in particular to a crash indication method, device and electronic equipment. [Background technology]

[0003] New Radio (NR) Sidelink (SL) mode 2 is a method based on terminal autonomous resource selection, and avoids resource or transmission collisions by using a channel monitoring method. However, the drawback of this method is that it cannot completely avoid the problem of transmission resource or transmission collisions. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application provide a collision indication method, device and electronic device that can handle resource or transmission collisions and improve transmission reliability and resource utilization. [Means for solving the problem]

[0005] According to a first aspect, an embodiment of the present application provides a collision indication method performed by a first terminal, the collision indication method comprising: when determining that a resource or transmission will collide, instructing the second terminal that the resource or transmission will collide; transmitting a collision indication signaling to the second terminal; providing a collision indication over a physical sidelink channel (PSxCH); and performing a collision indication via a physical sidelink feedback channel (PSFCH) resource corresponding to the collision resource.

[0006] According to a second aspect, an embodiment of the present application provides a collision indication method performed by a second terminal, the collision indication method comprising: receiving a collision indication signaling of the first terminal; detecting a physical sidelink channel (PSxCH) corresponding to a physical sidelink control channel (PSCCH) transmission resource and / or a physical sidelink shared channel (PSSCH) transmission resource to obtain collision indication information; and obtaining collision indication information indicated by the first terminal by one of detecting a physical sidelink feedback channel (PSFCH) resource and obtaining information about a collision resource.

[0007] According to a third aspect, an embodiment of the present application provides a collision indication device for use in a first terminal, the collision indication device comprising: a processing module for instructing a second terminal that a resource or transmission will collide when it is determined that a resource or transmission will collide; transmitting a collision indication signaling to the second terminal; providing a collision indication over a physical sidelink channel (PSxCH); and performing a collision indication via a physical sidelink feedback channel (PSFCH) resource corresponding to the collision resource.

[0008] According to a fourth aspect, an embodiment of the present application provides a collision indication device for use in a second terminal, the collision indication device comprising: receiving a collision indication signaling of the first terminal; detecting a physical sidelink channel (PSxCH) corresponding to a physical sidelink control channel (PSCCH) transmission resource and / or a physical sidelink shared channel (PSSCH) transmission resource to obtain collision indication information; and obtaining collision indication information indicated by the first terminal by one of detecting a physical sidelink feedback channel (PSFCH) resource and obtaining information of a collision resource.

[0009] According to a fifth aspect, an embodiment of the present application further provides an electronic device, the electronic device including a processor, a memory, and a program or instructions stored in the memory and operable to run on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the first or second aspect.

[0010] According to a sixth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instructions are stored, the program or instructions realizing the steps of the method according to the first or second aspect when executed by a processor.

[0011] According to a seventh aspect, an embodiment of the present application provides a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor running a program or instruction and used to implement the method according to the first or second aspect.

[0012] According to an eighth aspect, there is provided a computer program product, wherein the computer program product is stored on a non-transitory storage medium, and the computer program product, when executed by at least one processor, implements a method according to the first or second aspect.

[0013] According to a ninth aspect, there is provided a communications device, wherein the communications device is configured to perform a method according to the first or second aspect. [Effects of the Invention]

[0014] In the embodiments of the present application, after determining that a resource or transmission conflicts, the first terminal can indicate to the second terminal that the resource or transmission conflicts in various ways, so that the second terminal can avoid using the conflicted resource, thereby avoiding the transmission resource or transmission conflict. [Brief explanation of the drawings]

[0015] [Figure 1] 1 shows a schematic diagram of a wireless communication system; [Figure 2] 2 shows a schematic diagram of a collision indication method of a first terminal according to an embodiment of the present invention; [Figure 3] 1 shows a schematic diagram of an association relationship between PSxCH and PSCCH / PSSCH. [Figure 4] 1 shows a schematic diagram of indicating that resources or transmissions collide, according to an embodiment of the present invention; [Figure 5] 4 shows a schematic diagram of a collision indication method for a second terminal according to an embodiment of the present invention; [Figure 6] 1 shows a schematic diagram in which each PSCCH / PSSCH occasion corresponds to one PSxCH occasion. [Figure 7] 1 shows a schematic diagram in which multiple PSCCH / PSSCH occasions correspond to one PSxCH occasion. [Figure 8] 1 shows a schematic diagram in which one PSCCH / PSSCH occasion corresponds to multiple PSxCH occasions. [Figure 9] 1 shows a schematic diagram in which one PSCCH / PSSCH occasion corresponds to multiple PSxCH occasions. [Figure 10] 1 shows a schematic diagram in which each PSCCH / PSSCH occasion corresponds to multiple consecutively occurring PSxCH occasions. [Figure 11] 1 shows a schematic diagram in which each or multiple PSCCH / PSSCH occasions corresponds to one or multiple PSxCH occasions. [Figure 12]10 shows a schematic diagram in which the PSxCH occasion associated with a PSCCH / PSSCH resource is one PSFCH occasion before the PSFCH occasion associated with this PSCCH / PSSCH resource. [Figure 13] 1 shows a structural schematic diagram of a collision indication device of a first terminal according to an embodiment of the present application; [Figure 14] 1 shows a structural schematic diagram of a collision indication device of a second terminal according to an embodiment of the present application; [Figure 15] 1 is a schematic diagram of the configuration of a terminal according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0016] The following clearly describes the technical solutions in the embodiments of the present application, in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application fall within the scope of protection of the present application.

[0017] The terms "first," "second," etc. in the specification and claims of this application are intended to distinguish between similar objects and are not intended to describe a particular order or sequence. It should be understood that such terms, when used, are interchangeable where appropriate, so that embodiments of this application may be performed in orders other than those illustrated or described herein. Note that "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the related objects.

[0018] The techniques described herein are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but may also be applied to various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-Carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are always used interchangeably. A CDMA system may implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. A TDMA system may implement radio technologies such as Global System for Mobile Communications (GSM), while an OFDMA system may implement radio technologies such as UltraMobile Broadband (UMB), Evolution-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Fast Low-latency Access with Seamless Hand Off-orthogonal Frequency Division Multiplexing (Flash-OFDM), and others.UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher-level LTE (e.g., LTE-A) are newer versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the systems and radio technologies mentioned above or for other systems and radio technologies. The following description describes an NR system for illustrative purposes and uses NR terminology in most of the following description, but these techniques may be used in applications other than NR system applications.

[0019] The following description provides examples, but does not limit the scope, applicability, or arrangement of the claimed invention. The function and arrangement of the discussed elements may be modified without departing from the spirit and scope of the present disclosure. Various examples may omit, substitute, or add various steps or assemblies as appropriate. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Also, features described with reference to some examples may be combined in other examples.

[0020] FIG. 1 is a schematic diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network side device 12. Here, the terminal 11 may be referred to as a terminal device or user equipment (UE), and may be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile internet device (MID), a wearable device, or an in-vehicle device. It should be noted that the embodiments of the present application do not limit the specific type of the terminal 11. The network side device 12 may be a base station or a core network. Here, the base station may be a 5G or later version base station (e.g., gNB, 5G NR NB, etc.), or a base station in another communication system (e.g., eNB, WLAN access point, other access point, etc.), or a location server (e.g., E-SMLC or LMF (Location Manager Function)).Here, the base station may be referred to as a Node B, an evolved Node B, an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a B node, an evolved B node (eNB), a home B node, a home evolved B node, a wireless local area network (WLAN) access point, a wireless fidelity (Wi-Fi) node, or any other suitable term in the art, and as long as the same technical effect is achieved, the base station is not limited to a specific technical term. For illustrative purposes, although only base stations in an NR system are taken as examples in the embodiments of this application, the embodiments of this application are not limited to a specific type of base station and a specific communication system.

[0021] New Radio (NR) Sidelink (SL) control signaling consists of PC5 - Radio Resource Control (RRC) messages, Media Access Control (MAC) and CE (Media Access Control). st It includes Sidelink Control Information (SCI) (in the Physical Sidelink Control Channel (PSCCH)), 2nd SCI (in the Physical Sidelink Shared Channel (PSSCH)) and Sidelink Feedback Control Information (SFCI) (in the Physical Sidelink Feedback Channel (PSFCH)).

[0022] Here, PC5-RRC exists between two UEs that have established a unicast connection, belongs to higher layer signaling, and has a relatively large signaling processing delay. PC5-RRC is applied to control information transmission with a relatively large payload, is carried in PSSCH resources, and has a relatively flexible transmission time.

[0023] MAC CE belongs to higher layer signaling, and the signaling processing delay is relatively large but smaller than PC5-RRC. MAC CE is applied to the transmission of control information with a relatively large payload, and is carried in PSSCH resources, and the transmission time is relatively flexible.

[0024] 1 st SCI belongs to the physical layer signaling and has relatively small signaling processing delay. st SCI is primarily used for resource indication and / or reservation, 2 nd The SCI carries a transport block (TB) and transmits some related auxiliary control information. The SCI is applied to the transmission of control information with a relatively large payload, and the bearer channels PSCCH and PSSCH of the SCI are generally bound and transmitted, and the transmission time is relatively flexible.

[0025] The SFCI belongs to the physical layer signaling and has a relatively small signaling processing delay. It is only used for Hybrid Automatic Repeat Request-acknowledge (HARQ-ACK) transmission. The SFCI generally has only 1 bit of information and is carried on the PSFCH channel. The PSFCH has a fixed association with the PSCCH and / or PSSCH, which limits the flexibility of transmission.

[0026] The PSFCH channel is allocated to the SL resource pool according to a period and offset. The PSFCH channel occupies 1 / 2 symbols and is located at the second and third symbols from the end of a slot. The symbol immediately before the PSFCH is an automatic gain control (AGC) symbol, and the symbol immediately after the PSFCH is a gap.

[0027] The PSFCH resource consists of time domain resources, frequency domain resources, and code domain resources. The code domain uses a Zadoff-Chu (ZC) sequence, and the code sequence generation depends on the cyclic shift (CS), u, v, where u and v are the group identifier and sequence identifier of the ZC sequence, respectively. The PSFCH resource carries 1 information bit and is used for ACK / NACK feedback.

[0028] There is a fixed mapping relationship between the PSFCH resource and the PSCCH and / or PSSCH. One or more PSCCH / PSSCH occasions may correspond to one PSFCH occasion. One PSCCH / PSSCH resource may correspond to multiple PSFCH resources. When a UE transmits a PSFCH, it determines multiple corresponding PSFCH resources based on the received PSCCH / PSSCH resources, and determines one PSFCH resource to transmit based on a user equipment identifier (UE ID).

[0029] To perform collision detection, collision elimination and collision avoidance, the local UE may indicate to the remote UE that transmissions collide through collision indication signaling.

[0030] From the viewpoint of resource utilization, the signaling overhead of collision indication signaling is relatively small and is not suitable for transmission via PSCCH / PSSCH, so there is a tendency to use SFCI signaling, but SFCI signaling currently cannot support collision indication and requires corresponding redesign and / or extension.

[0031] From the viewpoint of transmission flexibility, PC5-RRC, MAC CE, 1 st SCI (in PSCCH), 2 nd The SCI (in the PSSCH) is more suitable for transmitting collision indication signaling, and may be considered for design based on these signalings when the collision indication scheme is relatively complex.

[0032] An embodiment of the present application provides a collision indication method, which, as shown in FIG. 2, includes the following steps:

[0033] Step 101: When determining that a resource or transmission conflicts, instruct a second terminal that a resource or transmission conflicts, which is: transmitting a collision indication signaling to the second terminal; providing a collision indication over a physical sidelink channel (PSxCH); and issuing a collision indication via a physical sidelink feedback channel (PSFCH) resource corresponding to the collision resource. In an embodiment of the present application, after determining that resources or transmissions collide, the first terminal can indicate to the second terminal that resources or transmissions collide in various manners. In this way, the second terminal can be prevented from using the conflicting resources, thereby avoiding the conflicting transmission resources or transmissions.

[0034] The first terminal can determine whether a resource or transmission conflict occurs by detecting a conflicting resource. Detecting a conflicting resource may be detecting whether a conflicting resource exists among resources associated with the first terminal. For example, detecting whether at least one of a resource for SL transmission of the first terminal, a resource for SL reception of the first terminal, and an uplink (UL) resource includes a conflicting resource.

[0035] In an embodiment of the present application, the conflict resource is: Conflicts between SL resources and and conflicts between SL resources and non-SL resources.

[0036] The SL resources are resources for SL transmission, such as PSCCH resources, PSSCH resources, and PSFCH resources.

[0037] The conflict between the SL resources may be that there is a partial or total overlap between multiple SL resources.

[0038] The non-SL resource may be a resource used by the first terminal and the network device to communicate with each other, such as an uplink transmission resource (UL TX resource) or a downlink reception resource (DL RX resource), or may be a WIFI resource, a Bluetooth resource, a Zigbee resource, etc.

[0039] The collision between the SL resources and the non-SL resources may be that there is some or all overlap between the SL resources and the non-SL resources.

[0040] It should be noted that in the embodiments of the present application, conflicting resources may refer to the existence of resource overlap or potential resource overlap between at least two resources. Here, potential resource overlap refers to the possibility that at least two resources overlap when detected at a certain time, but the resource overlap may not exist when detected at another time. For example, some terminals may reselect resources, so that resource overlap exists before reselection but may no longer exist after reselection. Furthermore, resource overlap or potential resource overlap may refer to partial or complete overlap of resources in time. For example, the same slot / subslot / symbol / subframe may exist, and the resource overlap may be frequency domain resource overlap or time-frequency resource overlap.

[0041] In addition, in the embodiment of the present application, the collision resource may be referred to as a bumping collision resource.

[0042] After detecting a conflicting resource, the first terminal notifies the second terminal of information about the conflicting resource, and the second terminal selects an SL resource that does not overlap with the resource of the first terminal, or selects an SL resource that does not overlap with a feedback resource corresponding to the resource of the first terminal.

[0043] In one alternative embodiment, the detecting of conflicting resources comprises: The first terminal detects a conflicting resource based on resource information; Here, the resource information is It is used to represent at least one of the resources of the first terminal and the resources of at least one second terminal.

[0044] Here, the resources of the first terminal may be resources selected by the first terminal, resources reserved by the first terminal, or resources that the first terminal needs to occupy, for example, resources for SL transmission selected by the first terminal. The resources of the second terminal may be resources selected by the second terminal, resources reserved by the second terminal, or resources that the second terminal needs to occupy, for example, resources for SL transmission selected by the second terminal.

[0045] Here, the at least one resource of the second terminal may be a resource notified by the second terminal through signaling, for example, after selecting a resource, the second terminal notifies the first terminal of the selected resource through broadcast signaling or unicast signaling.

[0046] The detecting of a conflicting resource by the first terminal based on the resource information may be detecting whether a conflicting resource exists among the resources of the first terminal, or detecting whether a conflicting resource exists between the resources of the first terminal and at least one resource of a second terminal.

[0047] In this embodiment, it is possible to accurately detect whether a conflicting resource exists based on the resource information.

[0048] Optionally, the first terminal detecting a conflict resource based on resource information includes: The first terminal detects a conflicting resource based on the resource information and an identifier of at least one of the second terminals.

[0049] The identifier of the at least one second terminal may be used to identify the second terminal corresponding to the resource. In this way, the resource information and the identifier of the at least one second terminal can accurately determine the second terminal with which a resource or transmission conflict exists with the first terminal, thereby further improving the detection effect.

[0050] Optionally, the resources of the at least one second terminal include: The SL control information includes at least one resource of the second terminal determined by the SL control information received by the first terminal, where the SL control information includes: The resource reservation information includes at least one of a resource reservation information and a terminal identifier associated with the reserved resource.

[0051] Here, the resource reservation information may be PSCCH / PSSCH resource reservation information, and the terminal identifier associated with the reserved resource may be a destination identifier (ID) of the reserved resource or a source identifier (ID) of the reserved resource. The reserved resource may include aperiodically and / or periodically reserved resources.

[0052] In this embodiment, the SL control information allows the resources of at least one second terminal to be accurately determined.

[0053] Furthermore, the SL control information may be SL control information obtained by demodulating at least one of the PSCCH and the PSSCH.

[0054] For example, when the second terminal is a transmitting terminal that transmits the PSCCH / PSSCH to the first terminal, the first terminal demodulates the SL control information transmitted by the second terminal to obtain the PSCCH / PSSCH resource reservation information and the target identifier associated with the PSCCH / PSSCH resource, thereby determining whether the PSCCH / PSSCH of the PSCCH / PSSCH resource is transmitted to the first terminal. For example, the first terminal may determine whether the first channel state information field (1 st The second channel state information field (2 nd and determining whether the resource is to be transmitted to the first terminal by demodulating the received signal (SCI) to obtain a target identifier associated with the resource.

[0055] It should be noted that in the embodiments of the present application, aperiodically reserved resources may be associated with corresponding terminals, i.e., the target terminal of this resource transmission can be determined by the aperiodically reserved resources, thereby eliminating the need to carry a target identifier in the SL control information. Of course, in some scenarios, periodically reserved resources may be associated with corresponding terminals, i.e., the target terminal of this resource transmission can be determined by the periodic reserved resources. Furthermore, in the embodiments of the present application, the target identifier can be used to determine whether information transmission on the aperiodically reserved or periodically reserved resources is sent to the first terminal. Of course, this does not preclude the use of a higher layer target identifier for joint determination, and the embodiments of the present application are not limited thereto.

[0056] For example, when the second terminal is a receiving terminal that receives the PSCCH / PSSCH transmitted by the first terminal, the first terminal demodulates the SL control information to obtain the PSCCH / PSSCH resource reservation information and the source identifier associated with the resource, and determines whether the PSCCH / PSSCH corresponding to the PSCCH / PSSCH resource is from the second terminal. For example, the first channel state information field (1 st The second channel state information field (2 SSCH) in the PSSCH is demodulated to obtain resource reservation information, where the reserved resources may include aperiodically and / or periodically reserved resources, and it can be determined whether the reserved resources are from the first terminal, at least for the aperiodically reserved resources, and the second channel state information field (2 SSCH) in the PSSCH is demodulated to obtain resource reservation information. ndThe signal from the first terminal may be demodulated to obtain a source identifier associated with the reserved resource, and the source identifier may be used to determine whether the reserved resource is from the first terminal. For example, the source identifier can at least determine whether the information transmission on the non-periodically reserved resource is from the first terminal. Of course, it is not excluded to combine the higher layer source identifier and make a joint determination, and the embodiment of the present application is not limited to this.

[0057] It should be noted that the embodiments of the present application are not limited to determining the resources of the at least one second terminal through SL control information, for example, in some scenarios, the resources of the at least one second terminal may be known through higher layer signaling.

[0058] Selectively, When the first terminal needs to receive a transmission block (TB) on the collision resource, When the first terminal needs to transmit a TB on the collision resource, When the first terminal needs to receive HARQ feedback on the collision resource; determining that a transmission collision exists when the first terminal needs to send HARQ feedback on the collision resource; Here, the TB is a TB corresponding to the conflicting resource, and the HARQ feedback is a HARQ feedback corresponding to the conflicting resource.

[0059] The TB corresponding to the conflicting resource may be as follows: if the conflicting resource is a PSCCH / PSSCH resource, this TB is a TB that needs to be transmitted on the PSCCH / PSSCH resource; or if the conflicting resource is a PSFCH resource, this TB is a TB transmitted on the PSCCH / PSSCH that causes a PSFCH resource or transmission conflict.

[0060] The HARQ feedback corresponding to the conflicting resource may be the HARQ feedback that needs to be performed on the conflicting resource.

[0061] The above-mentioned receiving a TB means receiving a TB transmitted by the second terminal, the above-mentioned transmitting a TB means transmitting a TB to the second terminal, the above-mentioned receiving an HARQ feedback means receiving an HARQ feedback transmitted by the second terminal, and the above-mentioned transmitting an HARQ feedback means transmitting an HARQ feedback to the second terminal.

[0062] The above-mentioned need for the first terminal to receive the TB on the collision resource may be as follows: That is, the first terminal determines that it cannot successfully demodulate the TB before the collision resource, so the first terminal needs to continue receiving on the collision resource, in which case a collision actually exists and the transmission collision exists. Alternatively, the first terminal needs to receive the TB on the collision resource may be as follows: That is, the first terminal cannot determine whether it will successfully demodulate the TB before the collision resource (e.g., there are still TB transmission resources to use), so the first terminal may need to continue receiving on the collision resource. Specifically, whether it is necessary to continue receiving on the collision resource depends on protocol agreement / configuration / pre-configuration / self-determination of the first terminal. That is, when the first terminal cannot determine whether it will successfully demodulate the TB before the collision resource, whether the transmission collision exists depends on protocol agreement / configuration / pre-configuration / self-determination of the first terminal.

[0063] The first terminal may need to transmit a TB on the collision resource because the first terminal cannot successfully transmit the TB before the collision resource and needs to continue transmitting on the collision resource, resulting in a transmission collision. For example, a double collision of PSSCH transmission (PSSCH TX) and PSSCH reception (PSSCH RX) or a double collision of PSFCH transmission (PSFCH TX) and PSFCH reception (PSFCH RX) actually exists.

[0064] Alternatively, the first terminal may need to transmit a TB on the collision resource as follows: the first terminal cannot determine whether it will successfully transmit the TB before the collision resource (there are still TB transmission resources to use), and the first terminal decides to continue transmitting on the collision resource based on protocol agreement / configuration / pre-configuration / self-determination, so that a transmission collision exists; that is, when the first terminal cannot determine whether it will successfully transmit the TB before the collision resource, whether a transmission collision exists depends on protocol agreement / configuration / pre-configuration / self-determination of the first terminal.

[0065] In addition, the first terminal can determine whether the TB transmission is successful according to the HARQ feedback status. For example, if an ACK is received for unicast or groupcast, it can determine that the TB transmission is successful, and if a NACK is not received for groupcast in some scenarios, it can determine that the TB transmission is successful.

[0066] The above-mentioned fact that the first terminal needs to receive or transmit HARQ feedback on the conflicting resource may be as follows: For a double collision of PSFCH transmission and reception, the first terminal determines whether the TB transmission on the conflicting PSFCH resource enables HARQ feedback or whether the TB needs to feedback HARQ-ACK / NACK. If enabled or if the TB needs to feedback HARQ-ACK / NACK, then if the terminal is a transmitter, it needs to receive HARQ feedback, and if the terminal is a receiver, it needs to send HARQ feedback.

[0067] Selectively, The first terminal has already successfully demodulated the TB before the collision resource; The first terminal can successfully transmit a TB before the collision resource; The first terminal does not need to receive HARQ feedback on the collision resource; and determining that there is no transmission collision in one of a case where the first terminal does not need to transmit HARQ feedback on the collision resource; Here, the TB is a TB corresponding to the conflicting resource, and the HARQ feedback is a HARQ feedback corresponding to the conflicting resource.

[0068] In this embodiment, if the first terminal has already successfully demodulated the TB before the collision resource, it determines that there is no actual collision and that there is no transmission collision. For example, when the first terminal performs TB reception, one of the multiple TB transmissions is performed on a colliding PSCCH / PSSCH resource, or on a PSCCH / PSSCH that causes a PSFCH collision. If the UE has successfully demodulated this TB before the collision resource, the first terminal does not need to continue receiving on the collision resource, and therefore there is no actual collision.

[0069] In this embodiment, if the first terminal can successfully transmit a TB before the collision resource, it is determined that there is no actual collision and that the transmission collision does not exist. For example, when the first terminal transmits a TB, some of the TB transmissions are performed on a collision resource or on a PSCCH / PSSCH that causes a PSFCH collision. If the first terminal successfully transmits this TB before the collision resource, the first terminal does not need to continue transmitting on the collision resource, and thus there is no actual collision.

[0070] The first terminal may not need to receive or transmit HARQ feedback on the conflicting resource as follows: for a double collision of PSFCH transmission and reception, the first terminal determines whether the TB transmission on the conflicting PSFCH resource enables HARQ feedback or whether the TB needs to feedback HARQ-ACK / NACK, and if HARQ feedback is not enabled / HARQ-ACK feedback / NACK is not allowed, the collision does not actually exist, and the transmission collision does not exist.

[0071] In one alternative embodiment, the detecting of conflicting resources comprises: Detecting a conflicting resource at a target time, or Detecting conflicting resources at a plurality of times including the target time.

[0072] Here, the target time may be one or more times defined by a protocol, pre-configured, or network-instructed.

[0073] At the target time, Detecting conflicting resources; Detecting whether a transmission collision exists; detecting a transmission type of the collision resource; Detecting the priority of transmission information of the conflicting resource; Detecting whether there is a transmission resource in the TB corresponding to the collision resource after the collision resource; The first terminal may perform at least one of detecting whether the first terminal can transmit multiple PSFCHs on the conflicting resource, or detecting whether there is at least one PSFCH on the conflicting resource whose transmission power is equal to or less than a threshold.

[0074] Optionally, the target time is: A time T1 before a resource instruction is given to the SL resource of the first terminal; A time before the time T1 before a resource instruction is given to the SL resource of the first terminal; a time T1 before the reservation of the SL resource of the first terminal; a time before time T1 before the reservation of the SL resource of the first terminal; A time T2 before the SL resource of the first terminal; A time before the T2 time before the SL resource of the first terminal; A time T3 before the SL resource of the second terminal; A time before the T3 time before the SL resource of the second terminal; a time T3 after the second terminal transmits the SL resource reservation indication signaling; A time from when the second terminal transmits the SL resource reservation indication signaling to a time T3 after the second terminal transmits the SL resource reservation indication signaling; a time T4 before the collision indication signaling associated with the SL resource of the second terminal is transmitted; and a time before time T4 before a collision indication signaling related to the SL resource of the second terminal is transmitted; Here, the SL resource of the second terminal is a resource for the second terminal to perform SL transmission to the first terminal, and T1, T2, T3 and T4 respectively represent the same or different time resources.

[0075] It should be noted that T1, T2, T3, and T4 may be protocol-defined, pre-configured, or network-instructed time resources. For example, T1, T2, T3, and T4 may represent the same or different numbers of slots / subslots / symbols / subframes, etc. Furthermore, T1, T2, T3, and T4 may include the processing time of the terminal. For example, T1, T2, T3, and T4 may be time domain resources greater than the processing time of the terminal.

[0076] In this embodiment, the terminal can be realized to detect collision resources at least at the target time, and whether to detect at other times can be determined by the first terminal, or can be stipulated by a protocol, or can be configured by a network. For example, the first terminal can perform collision detection all the time, or the first terminal can decide when to perform collision detection based on the implementation of the terminal, or the first terminal can perform collision detection at a time specified by a protocol / configured by a control node / pre-configured, and / or perform collision detection at other times.

[0077] In some embodiments, the collision indication signaling comprises: Sidelink control information SCI; a media access control (MAC) element (CE); Channel state information CSI; Sidelink feedback control information SFCI; The sidelink reference signal may be, for example, any one of a Demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), and a Phase Tracking Reference Signal (PT-RS).

[0078] For collision indication signaling, it is necessary to define its transmission time.

[0079] In some embodiments, the first time for transmitting the collision indication signaling comprises: The second time is located after the first time, and the interval between the first time and the second time is equal to or less than the first threshold, and the second time is the time when the terminal detects that the resource or transmission is colliding, i.e., the terminal needs to send the collision indication signaling within the time limit after detecting the collision; The resource is located before the collision resource, and the distance between the resource and a certain time of the collision resource is equal to or greater than a second threshold value; and The third time satisfies one of the following conditions: it is located before the third time, and the distance from the third time is equal to or greater than the third threshold, and the third time is a time when there is reservation indication signaling or indication signaling of a conflicting resource.

[0080] wherein the factor for determining the second threshold includes at least one of a signaling demodulation time length, a resource reselection processing time length, and a transmit-receive conversion time length; The factors for determining the third threshold include at least one of a signaling demodulation time length, a resource reselection processing time length, and a transmit-receive conversion time length.

[0081] In some embodiments, the PSxCH resources comprise at least one of time domain resources, frequency domain resources, and code domain resources; The time domain resource consists of L time domain basic units, which are predefined by a protocol or configured or preconfigured by a control node, where L is a positive integer. Here, the time domain basic unit includes a symbol, a slot, and a sub-slot, and the L time domain basic units may be L consecutive time domain basic units. For example, the time domain resource may consist of one symbol or two consecutive symbols. The frequency domain resource consists of F frequency domain basic units, where F is a positive integer, that are predefined by a protocol or configured or pre-configured by a control node, where the frequency domain basic unit may be a physical resource block (PRB), a subcarrier, or a subchannel, and the F frequency domain basic units may be F consecutive frequency domain basic units. For example, the frequency domain basic unit may be one physical resource block or two physical resource blocks.

[0082] The code area resource consists of C code sequences predefined by a protocol or configured by a control node, or code sequences generated according to a sequence generation rule predefined by a protocol or configured by a control node, where C is a positive integer. For example, a ZC sequence is adopted to generate a set of code sequences by combining CS, u, and v. Distinguishing parameters of the C code sequences may be one or more of CS, u, and v. A typical method is to distinguish different code sequences by CS, and the C code sequences may be fixed packet sequences.

[0083] In some embodiments, the PSxCH status information may include: At least one of a time domain basic unit, a frequency domain basic unit, and a code sequence; If the PSxCH resource does not include a code domain resource, the PSxCH status information may be represented by the coding bits.

[0084] In some embodiments, a PSxCH channel consists of X PSxCH occasions in the time domain, where a PSxCH occasion includes Y PSxCH frequency domain resources, and the PSxCH channel includes Z code domain resources, where X, Y, and Z are positive integers.

[0085] where X is typically 1, and the location of the PSxCH occasion in a slot may be protocol-defined, control node-configured, or pre-configured, with a typical location being the time-domain location of the PSFCH channel. The period of the PSxCH occasion and its starting location in the System Frame Number (SFN) and / or Direct Frame Number (DFN) may be protocol-defined, control node-configured, or pre-configured.

[0086] A PSxCH occasion includes Y PSxCH frequency domain resources, where Y >= 1. For example, the PRBs occupied by the PSxCH occasion may be indicated by a bitmap, or may be indicated by a starting position + length method, and the typical indication method is the same as that of the PSFCH channel.

[0087] The PSxCH channel includes Z code domain resources, where Z >= 1. For example, the number of code domain resources may be derived by indicating the total number of code sequences.

[0088] Alternatively, one PSxCH occasion may be divided into multiple PSxCH resource subsets. If a PSCCH / PSSCH resource can be associated with multiple PSxCH occasions, the PSCCH / PSSCH resource for each associated PSxCH occasion at a different position needs to be associated with different resource subsets corresponding to the PSxCH occasion, or for each associated PSxCH occasion, the PSCCH / PSSCH resource needs to be associated with one specific resource subset corresponding to the PSxCH occasion, thereby preventing multiple PSCCHs / PSSCHs from being associated with the same PSxCH resource.

[0089] In some embodiments, A time domain basic units before the PSxCH occasion are used to transmit an Automatic Gain Control (AGC) signal. For example, one symbol before the PSxCH occasion is used to transmit the AGC signal. In this manner, the terminal transmits an AGC signal before transmitting a PSxCH resource, where A time domain basic units are adjacent to the PSxCH occasion.

[0090] Here, the frequency domain width of the signal is equal to the PSxCH frequency domain resource to be transmitted, and / or the power or power spectral density (PSD) of the signal transmission is equal to the power or PSD of the PSxCH resource transmission, and / or the signal may be a copy of a portion of the PSxCH signal. For example, the signal of the first or nth symbol of the PSxCH may be copied to an ACG symbol and transmitted.

[0091] In some embodiments, the multiplexing scheme of the PSxCH and the PSCCH and / or the PSSCH is: In the case of time division multiplexing (TDM), when the symbols occupied by PSCCH / PSSCH do not include the symbols occupied by PSxCH / AGC, or when PSCCH / PSSCH transmission overlaps with PSxCH channel / PSxCH transmission / AGC, performing punturing / rate matching operation on PSCCH / PSSCH; At least one of the following is employed: Frequency Division Multiplexing (FDM) and

[0092] In some embodiments, the multiplexing scheme of the PSxCH and the PSFCH is: FDM, in which the PSxCH occasions overlap with the PSFCH occasions, and the time domain (pre-)arrangement of the PSFCH channel is multiplexed onto the time domain (pre-)arrangement of the PSxCH channel and / or the time domain (pre-)arrangement of the PSFCH channel is multiplexed onto the code domain (pre-)arrangement; Space Division Multiplexing (SDM), in which the time-frequency domains of the PSxCH and the PSFCH overlap, and the (pre-) allocation of the time-frequency domain of the PSFCH channel is multiplexed onto the (pre-) allocation of the time-frequency domain of the PSxCH channel; At least one of TDM and

[0093] In some embodiments, there is an association between the PSxCH resource and the physical sidelink control channel PSCCH resource and / or the physical sidelink shared channel PSSCH resource, as shown in Fig. 3, where Conflict indication is a conflict indication and Reservation is reservation information.

[0094] In some embodiments, as shown in the left half of FIG. 3, the collision information carried on the PSxCH indicates that the PSCCH and / or PSSCH resources associated with the PSxCH resource have collided, or The collision information carried on the PSxCH indicates that a PSCCH associated with a PSxCH resource and / or a PSFCH corresponding to a PSSCH resource has collided.

[0095] Here, the protocol may only support indicating one of PSSCH and PSFCH collision, or the protocol may support indicating PSSCH and PSFCH collision, for example, different information state values ​​of PSxCH indicate PSCCH collision and PSFCH collision, respectively, or the same information state indicates PSCCH collision or PSFCH collision.

[0096] In some embodiments, as shown in the right half of FIG. 3, the collision information carried on the PSxCH indicates that the reserved PSCCH and / or PSSCH resources of the PSCCH and / or PSSCH resources associated with the PSxCH resource have collided, or The collision information carried on the PSxCH indicates that the PSFCH corresponding to the reserved PSCCH and / or PSSCH resource has collided with the PSCCH and / or PSSCH resource associated with the PSxCH resource.

[0097] The protocol may only support indicating that reserved PSCCH / PSSCH resources of one or several types of reservation information collide / cause collision. For example, the collision information indicates that reserved PSCCH and / or PSSCH resources of a preset type of reservation information collide. For example, periodic reservation, aperiodic reservation, the first aperiodic reserved PSCCH / PSSCH, the second aperiodic reserved PSCCH / PSSCH, the first PSCCH / PSSCH of the next period in periodic reservation, the second PSCCH / PSSCH of the next period in periodic reservation, etc. Indicating the occurrence of a collision earlier in this way allows the UE to take action earlier, for example, leaving the UE more time for resource selection.

[0098] Furthermore, the status information in the PSxCH also carries HARQ-ACK feedback information, and the PSxCH is in a New PSFCH format.

[0099] In some embodiments, the time domain association between the PSxCH resource and the PSCCH and / or PSSCH resource includes any one of the following:

[0100] One PSCCH or PSSCH occasion is associated with one PSxCH occasion, thus allowing for maximum multiplexing of the PSFCH design; A plurality of PSCCH and / or PSSCH occasions may be associated with one PSxCH occasion, thus maximizing the multiplexing of the PSFCH design; One PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, A plurality of PSCCH and / or PSSCH occasions are associated with a plurality of PSxCH occasions.

[0101] Here, the plurality of PSCCH and / or PSSCH occasions may be a plurality of PSCCH and / or PSSCH occasions that appear consecutively.

[0102] In some embodiments, when one PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or multiple PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, For multiple PSxCH occasions, one PSxCH resource subset in a PSxCH occasion corresponds to the one PSCCH or PSSCH occasion, or corresponds to the multiple PSCCH and / or PSSCH occasions.

[0103] In some embodiments, when one PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or when multiple PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, the contents of the indication information carried on each PSxCH occasion on the associated multiple PSxCH occasions are defined independently.

[0104] In some embodiments, an associated PSxCH occasion before a PSCCH and / or PSSCH at least indicates whether this PSCCH and / or PSSCH has collided, and an associated PSxCH occasion after a PSCCH and / or PSSCH at least indicates whether a reserved PSCCH and / or PSSCH of this PSCCH and / or PSSCH has collided.

[0105] In some embodiments, when multiple types of collision information exist based on the content carried in the PSxCH information, each type of collision information of the PSCCH or PSSCH is independently mapped to one PSxCH occasion.

[0106] Compared with the scheme in which "one or more PSCCH or PSSCH occasions are associated with one PSxCH occasion", the scheme in which "one or more PSCCH or PSSCH occasions are associated with multiple PSxCH occasions" has more flexibility in the location of transmitting collision indication information, and collisions can be indicated in a timely manner. For example, resource or transmission collisions detected at positions #1, #2, and #3 in Figure 4 can be indicated promptly.

[0107] In some embodiments, the time interval between a PSCCH and / or PSSCH occasion and an associated PSxCH occasion is K, or the minimum time interval is K, or the maximum time interval is K, where K is a length of time predefined by a protocol or configured or pre-configured by a control node.

[0108] In some embodiments, The PSCCH and / or PSSCH occasion precedes the associated PSxCH occasion, or The PSCCH and / or PSSCH occasions are after the associated PSxCH occasions.

[0109] The above content may be predefined by a protocol or configured or preconfigured by a control node. Optionally, when each PSCCH / PSSCH is associated with multiple PSxCH occasions, all the associated PSxCH occasions may be either before the PSCCH / PSSCH or after the PSCCH / PSSCH, or some may be before the PSCCH / PSSCH, or some may be after the PSCCH / PSSCH.

[0110] In some embodiments, numbering the resources of the PSCCH and / or PSSCH occasions corresponding to the PSxCH occasions; numbering the PSxCH resources on the PSxCH occasions, Each number of PSCCH or PSSCH resources corresponds to one or more numbers of PSxCH resources.

[0111] In some embodiments, the PSxCH occasion associated with a PSCCH and / or PSSCH resource and the PSFCH occasion associated with that PSCCH and / or PSSCH resource are correlated.

[0112] In some embodiments, the PSxCH occasion associated with a PSCCH and / or PSSCH resource and the PSFCH occasion associated with this PSCCH and / or PSSCH resource are in the same slot or the same symbol within the same slot.

[0113] In some embodiments, a PSxCH occasion associated with a PSCCH and / or PSSCH resource precedes a PSFCH occasion associated with that PSCCH and / or PSSCH resource; or The PSxCH occasion associated with a PSCCH and / or PSSCH resource follows the PSFCH occasion associated with this PSCCH and / or PSSCH resource.

[0114] The above content may be predefined by a protocol or configured or preconfigured by a control node, for example, the PSxCH occasion associated with a PSCCH and / or PSSCH resource is the Pth PSFCH occasion after the PSFCH occasion associated with this PSCCH and / or PSSCH resource.

[0115] In some embodiments, the PSxCH occasions associated with the PSCCH and / or PSSCH resources and the PSFCH occasions associated with the PSCCH and / or PSSCH resources are TDM.

[0116] In some embodiments, the PSxCH status information carries HARQ-ACK feedback information.

[0117] In some embodiments, the method further includes determining a PSxCH transmission resource, wherein determining the PSxCH transmission resource comprises: determining a target PSCCH and / or PSSCH resource; determining a target PSxCH resource associated with a target PSCCH and / or PSSCH resource; and selecting and transmitting at least one PSxCH from the at least one target PSxCH resource.

[0118] In some embodiments, the target PSCCH and / or PSSCH resources are the collided PSCCH and / or PSSCH resources; or The target PSCCH and / or PSSCH resource is a PSCCH and / or PSSCH resource that causes a PSFCH collision; the target PSCCH and / or PSSCH resource is a third party PSCCH and / or PSSCH resource that reserves the conflicted PSCCH and / or PSSCH resource, or The target PSCCH and / or PSSCH resource is a third party PSCCH and / or PSSCH resource that reserves the PSCCH and / or PSSCH resource that causes a PSFCH collision.

[0119] In some embodiments, when the target PSCCH and / or PSSCH resource consists of multiple resources, the target PSxCH resource may be: all PSxCH resources corresponding to said plurality of resources; The PSxCH resource corresponds to one of the plurality of resources, and the one resource is the resource with the largest time domain number, the resource with the smallest time domain number, the resource with the largest frequency domain number, or the resource with the smallest frequency domain number among the plurality of resources.

[0120] In some embodiments, when the target PSCCH and / or PSSCH resource corresponds to multiple PSxCH occasions, the target PSxCH resource in at least one PSxCH occasion is selected.

[0121] In some embodiments, one PSxCH occasion is selected based on the indications in the PSxCH occasion, e.g., the resources in the selected PSxCH occasion may indicate this conflict, or At least one PSxCH occasion may be selected based on the occurrence time of the PSxCH occasion, for example, one or more PSxCH occasions closest to the current detection time, the PSxCH occasions closest to the target PSCCH / PSSCH resource, or the PSxCH occasions may be limited to be located before or after the target PSCCH / PSSCH resource.

[0122] In some embodiments, selecting and transmitting at least one PSxCH from the at least one target PSxCH resource includes any one of the following:

[0123] Select a PSxCH transmission resource based on the terminal identifier. For example, if the number of target PSxCH resources is Q (numbered sequentially), the UE will adopt the qth PSxCH resource for transmission, where q is the UE ID mod Q. This UE ID may be the UE ID of the target remote end of the "trigger or notification" signaling and / or the UE ID of the local end transmitting this PSxCH. The PSxCH transmission resource is selected based on the zone identifier, and this zone ID may be the zone ID of the target remote end that "trigger or notify" and / or the local end zone ID that transmits this PSxCH.

[0124] In some embodiments, if a PSxCH transmission and reception collide, Abandoning reception of PSxCH or transmission of PSxCH according to rules predefined by a protocol; Abandoning reception of a PSxCH or transmission of a PSxCH according to a pre-configured rule; Abandoning reception of PSxCH or transmission of PSxCH according to rules configured by a control node; and (b) discarding PSxCH reception or PSxCH transmission based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., discarding a lower priority resource.

[0125] In some embodiments, when multiple PSxCHs to transmit collide, If power is limited, one or more PSxCH transmissions may be dropped based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., lower priority may be dropped; If power is not limited, multiple PSxCHs may be transmitted at equal power, or the transmit power of multiple PSxCHs may be determined based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCHs, e.g., lower priority ones may have lower transmit power than higher priority ones.

[0126] In some embodiments, if the transmission of the PSxCH collides with the reception of the PSFCH: Abandoning the transmission of the PSxCH or the reception of the PSFCH according to rules predefined by a protocol; Abandoning transmission of the PSxCH or reception of the PSFCH according to a preconfigured rule; Abandoning the transmission of the PSxCH or the reception of the PSFCH according to rules configured by a control node; transmitting the PSxCH or receiving the PSFCH based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., possibly discarding the lower priority one;

[0127] Here, the rule may be that the transmission of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise the transmission of the PSxCH is abandoned.

[0128] In some embodiments, if reception of the PSxCH collides with transmission of the PSFCH: Abandoning the reception of the PSxCH or the transmission of the PSFCH according to rules predefined by a protocol; Abandoning reception of the PSxCH or transmission of the PSFCH according to a preconfigured rule; Abandoning reception of the PSxCH or transmission of the PSFCH according to rules configured by a control node; receiving the PSxCH or transmitting the PSFCH based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., possibly discarding the lower priority one;

[0129] Here, the rule may be that reception of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise reception of the PSxCH is abandoned.

[0130] In some embodiments, if a PSxCH and a PSFCH transmission collide, If power is limited, - discarding the PSxCH or PSFCH according to rules predefined by a protocol or configured by a control node or preconfigured; and transmitting the PSxCH or PSFCH based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., giving priority to transmission of a higher priority resource.

[0131] If power is not limited, multiple PSxCHs and PSFCHs may be transmitted at equal power, or the transmit power of the PSxCH may be determined based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., lower priority ones may have lower transmit power than higher priority ones.

[0132] Here, the rule may be that the transmission of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise the transmission of the PSxCH is abandoned.

[0133] In some embodiments, the providing of the collision indication over the physical sidelink feedback channel PSFCH corresponding to the collision resource comprises: and feeding back a negative acknowledgement (NACK) on the PSFCH corresponding to the conflicting resource.

[0134] An embodiment of the present invention further provides a collision indication method performed by a second terminal, as shown in FIG. 5, the method includes the following steps:

[0135] Step 201: receiving a collision indication signaling of the first terminal; detecting a physical sidelink channel (PSxCH) corresponding to a physical sidelink control channel (PSCCH) transmission resource and / or a physical sidelink shared channel (PSSCH) transmission resource to obtain collision indication information; and obtaining collision indication information indicated by the first terminal by one of detecting a physical sidelink feedback channel (PSFCH) resource and obtaining information on a collision resource.

[0136] Here, the UE performs PSCCH / PSSCH transmission, and the UE detects the collision indication information by at least detecting the PSxCH resource corresponding to the PSCCH / PSSCH transmission resource, where the transmission resource includes the receiving resource and the transmitting resource.

[0137] In one specific embodiment, as shown in FIG. 6, where each PSCCH / PSSCH occasion (grid-filled part) corresponds to one PSxCH occasion (hatched part) (the following method may be used in other cases), the time interval between each PSCCH / PSSCH occasion and the associated PSxCH occasion is K, The PSxCH occasion associated with the PSCCH / PSSCH occasion is the first PSxCH that fills the interval after the PSCCH / PSSCH, or The PSxCH associated with a PSCCH / PSSCH occasion is the first PSxCH that fills the interval before the PSCCH / PSSCH.

[0138] K includes at least one of the UE processing time, for example, PSxCH demodulation time / preparation time, PSCCH / PSCCH demodulation time / preparation time, transmit / receive conversion time, resource reselection preparation time, PSFCH demodulation time / preparation time, and HARQ RTT time.

[0139] In another specific embodiment, as shown in FIG. 7, when each / several (consecutively occurring) PSCCH / PSSCH occasions correspond to one PSxCH occasion (the following method does not exclude being used in other cases), the minimum time interval between each PSCCH / PSSCH occasion and the associated PSxCH occasion is Kmin; The PSxCH occasion associated with the PSCCH / PSSCH occasion is the first PSxCH that fills the interval after the PSCCH / PSSCH, or The PSxCH associated with the PSCCH / PSSCH occasion is the first PSxCH that satisfies the interval before the PSCCH / PSSCH; Kmin includes at least one of the UE processing times, for example, PSxCH demodulation time / preparation time, PSCCH / PSCCH demodulation time / preparation time, transmit / receive conversion time, resource reselection preparation time, PSFCH demodulation time / preparation time, and HARQ RTT time.

[0140] In another specific embodiment, as shown in FIG. 8 and FIG. 9, when each PSCCH / PSSCH occasion corresponds to a plurality of (consecutively occurring) PSxCH occasions (the following method does not exclude being used in other cases), the time interval between each PSCCH / PSSCH occasion and the associated PSxCH occasion is K1, K2, Kn, where K1, K2, Kn correspond to the plurality of PFXCH occasions; The PSxCH occasion associated with the PSCCH / PSSCH occasion is a plurality of PSxCHs following the PSCCH / PSSCH that satisfy the interval, or The PSxCH associated with the PSCCH / PSSCH occasion is a plurality of PSxCHs before the PSCCH / PSSCH that satisfy the interval, or The PSxCH associated with the PSCCH / PSSCH occasion is a plurality of PSxCHs that satisfy the interval before or after the PSCCH / PSSCH, Here, the positive / negative of K1, K2···Kn represents the front / rear, respectively, or the negative / positive of K1, K2···Kn represents the front / rear, respectively.

[0141] K1, K2, ..., Kn include at least one of UE processing times, for example, PSxCH demodulation time / preparation time, PSCCH / PSCCH demodulation time / preparation time, transmit / receive conversion time, resource reselection preparation time, PSFCH demodulation time / preparation time, and HARQ round trip delay (RTT) time.

[0142] In another specific embodiment, as shown in FIG. 10, when each PSCCH / PSSCH occasion corresponds to a plurality of (consecutively occurring) PSxCH occasions (the following method does not exclude being used in other cases), the minimum time interval between each PSCCH / PSSCH occasion and the associated PSxCH occasion is Kmin / the maximum time interval is Kmax; The PSxCH occasion associated with the PSCCH / PSSCH occasion is the nearest PSxCHs that satisfy the interval after the PSCCH / PSSCH, or The PSxCH associated with the PSCCH / PSSCH occasion is the nearest PSxCHs before the PSCCH / PSSCH that satisfy the interval, or The PSxCHs associated with a PSCCH / PSSCH occasion are the nearest multiple PSxCHs before / after the PSCCH / PSSCH that satisfy the interval.

[0143] They may be divided into negative Kmin_m and Kmax_m and positive Kmin_p and Kmax_p, with positive / negative Kmin / Kmax representing before / after, respectively, or negative / positive Kmin / Kmax representing before / after, respectively.

[0144] Kmin / Kmax includes at least one of the UE processing times, for example, PSxCH demodulation time / preparation time, PSCCH / PSCCH demodulation time / preparation time, transmit / receive conversion time, resource reselection preparation time, PSFCH demodulation time / preparation time, and HARQ RTT time.

[0145] In another specific embodiment, as shown in the left half of FIG. 11, when each / multiple PSCCH / PSSCH occasions correspond to one PSxCH occasion, the following steps are performed:

[0146] Step 1: numbering resources of PSCCH / PSSCH occasion(s) corresponding to PSxCH occasions, for example, numbering in ascending or descending order in the time domain, numbering in ascending or descending order in the frequency domain, numbering according to the time domain and then numbering according to the frequency domain, or numbering according to the frequency domain and then numbering according to the time domain; Step 2: Number the PSxCH resources on the PSxCH occasion, for example, number them in ascending or descending order in the time domain (if there is a time domain), number them in ascending or descending order in the frequency domain, number them in ascending order (in ascending order of CS index) or descending order in the code domain, or number them according to a combination order of at least two of the time domain, frequency domain, and code domain; Step 3: Each numbered PSCCH / PSSCH resource corresponds to one or more numbered PSxCH resources. For example, the PSCCH / PSSCH resource numbers are 1 to M (0 to M-1), the PSxCH resource numbers are 1 to N (0 to N-1), the first PSCCH / PSSCH resource corresponds to the 1st to n1th PSxCH resources, the second PSCCH / PSSCH resource corresponds to the n1+1th to 2*n1th PSxCH resources, and by analogy therewith, n1 can be N / M (rounded to nearest, rounded up, or rounded down).

[0147] In another specific embodiment, as shown in the right half of FIG. 11, when each / multiple PSCCH / PSSCH occasions correspond to multiple PSxCH occasions, the following steps are performed:

[0148] Step 1: Number the resources of the PSCCH / PSSCH occasion(s) corresponding to the PSxCH occasions, for example, number them in ascending or descending order in the time domain, number them in ascending or descending order in the frequency domain, number them according to the time domain and then according to the frequency domain, or number them according to the frequency domain and then according to the time domain; Step 2: Independently number the PSxCH resources (which may be in a corresponding PSxCH subset) corresponding to each PSxCH occasion among the plurality of PSxCH occasions, such as numbering in ascending or descending order in the time domain (if there is a time domain), numbering in ascending or descending order in the frequency domain, numbering in ascending order (in ascending order of CS index) or descending order in the code domain, or numbering according to a combination order of at least two of the time domain, frequency domain, and code domain; Step 3: Each numbered PSCCH / PSSCH resource corresponds to one or more numbered PSxCH resources. For example, the PSCCH / PSSCH resource numbers are 1 to M (0 to M-1), and the PSxCH resource numbers 1 to N corresponding to one PSxCH occasion are (0 to N-1), where the first PSCCH / PSSCH resource corresponds to the 1st to n1th PSxCH resources, and the second PSCCH / PSSCH resource corresponds to the n1+1th to 2*n1th PSCCH / PSSCH resources. Based on this, n1 may be N / M (rounded to nearest, rounded up, or rounded down).

[0149] In another specific embodiment, the PSxCH and PSFCH occasions are of FDM, as shown in Figure 12. The PSxCH occasion associated with a PSCCH / PSSCH resource is the PSFCH occasion immediately preceding the PSFCH occasion associated with this PSCCH / PSSCH resource.

[0150] In the above examples, " / " represents "and / or" or represents the meaning of "or".

[0151] It should be noted that the execution body of the collision indication method according to the embodiment of the present application may be a collision indication device or a module for executing and loading the collision indication method in the collision indication device. In the embodiment of the present application, the collision indication method according to the embodiment of the present application will be described by taking the collision indication device executing and loading the collision indication method as an example.

[0152] An embodiment of the present application provides a collision indication device for use in a first terminal 300, as shown in FIG. 13, the device comprising: a processing module 310 for instructing a second terminal that a resource or transmission will collide when it is determined that a resource or transmission will collide; transmitting a collision indication signaling to the second terminal; providing a collision indication over a physical sidelink channel (PSxCH); and performing a collision indication via a physical sidelink feedback channel (PSFCH) resource corresponding to the collision resource.

[0153] In the embodiments of the present application, after determining that a resource or transmission conflicts, the first terminal can indicate to the second terminal that the resource or transmission conflicts in various ways, so that the second terminal can avoid using the conflicted resource, thereby avoiding the transmission resource or transmission conflict.

[0154] In some embodiments, the collision indication signaling comprises: Sidelink control information SCI; a media access control (MAC) element (CE); channel state information; and Sidelink feedback control information SFCI; The sidelink reference signal may be, for example, any one of a Demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), and a Phase Tracking Reference Signal (PT-RS).

[0155] For collision indication signaling, it is necessary to define its transmission time.

[0156] In some embodiments, the first time for transmitting the collision indication signaling comprises: The second time is located after the first time, and the interval between the first time and the second time is equal to or less than the first threshold, and the second time is the time when the terminal detects that the resource or transmission is colliding, i.e., the terminal needs to send the collision indication signaling within the time limit after detecting the collision; The resource is located before the collision resource, and the distance between the resource and a certain time of the collision resource is equal to or greater than a second threshold value; and The third time satisfies one of the following conditions: it is located before the third time, and the distance from the third time is equal to or greater than the third threshold, and the third time is a time when there is reservation indication signaling or indication signaling of a conflicting resource.

[0157] wherein the factor for determining the second threshold includes at least one of a signaling demodulation time length, a resource reselection processing time length, and a transmit-receive conversion time length; The factors for determining the third threshold include at least one of a signaling demodulation time length, a resource reselection processing time length, and a transmit-receive conversion time length.

[0158] In some embodiments, the PSxCH resources comprise at least one of time domain resources, frequency domain resources, and code domain resources; The time domain resource consists of L time domain basic units, which are predefined by a protocol or configured or preconfigured by a control node, where L is a positive integer. Here, the time domain basic unit includes a symbol, a slot, and a sub-slot, and the L time domain basic units may be L consecutive time domain basic units. For example, the time domain resource may consist of one symbol or two consecutive symbols. The frequency domain resource consists of F frequency domain basic units, where F is a positive integer, that are predefined by a protocol or configured or pre-configured by a control node, where the frequency domain basic unit may be a physical resource block (PRB), a subcarrier, or a subchannel, and the F frequency domain basic units may be F consecutive frequency domain basic units, for example, one physical resource block (PRB).

[0159] The code area resource may consist of C code sequences predefined by a protocol or configured by a control node, or may be a code sequence generated according to a sequence generation rule predefined by a protocol or configured by a control node, where C is a positive integer. For example, a ZC sequence may be used to generate a set of code sequences by combining CS, u, and v. The distinguishing parameters of the C code sequences may be one or more of CS, u, and v. A typical method is to distinguish different code sequences by CS, and the C code sequences may be fixed packet sequences.

[0160] In some embodiments, the PSxCH status information may include: At least one of a time domain basic unit, a frequency domain basic unit, and a code sequence; If the PSxCH resource does not include a code domain resource, the PSxCH status information may be represented by the coding bits.

[0161] In some embodiments, a PSxCH channel consists of X PSxCH occasions in the time domain, where a PSxCH occasion includes Y PSxCH frequency domain resources, and the PSxCH channel includes Z code domain resources, where X, Y, and Z are positive integers.

[0162] where X is typically 1, and the location of the PSxCH occasion in a slot may be protocol-defined, configured by a control node, or pre-configured, with a typical location being the time-domain location of the PSFCH channel. The period of the PSxCH occasion and its starting location in the system frame number (SFN) and / or direct frame number (DFN) may be protocol-defined, configured by a control node, or pre-configured.

[0163] A PSxCH occasion includes Y PSxCH frequency-domain resources, where Y >= 1. For example, the PRB occupied by the PSxCH occasion may be indicated by a bitmap, or may be indicated by a starting position + length method, and the typical indication method is the same as the PSFCH channel indication method.

[0164] The PSxCH channel includes Z code domain resources, where Z >= 1. For example, the number of code domain resources may be derived by indicating the total number of code sequences.

[0165] Alternatively, one PSxCH occasion may be divided into multiple PSxCH resource subsets. A PSCCH / PSSCH resource may be associated with multiple PSxCH occasions, and the associated PSxCH occasions at different positions should correspond to different resource subsets, thereby preventing multiple PSCCHs / PSSCHs from being associated with the same PSxCH resource.

[0166] In some embodiments, A time domain basic units before the PSxCH occasion are used to transmit an automatic gain control (AGC) signal. For example, the symbols immediately before the PSxCH occasion are used to transmit the AGC signal. In this way, the terminal transmits the ACG signal before transmitting the PSxCH resource. Here, the A time domain basic units are adjacent to the PSxCH occasion.

[0167] Here, the frequency domain width of the signal is equal to the PSxCH frequency domain resource to be transmitted, and / or the power or power spectral density (PSD) of the signal transmission is equal to the power or PSD of the PSxCH resource transmission, and / or the signal may be a copy of a portion of the PSxCH signal, for example, the signal of the first or nth symbol of the PSxCH is copied to an ACG symbol and transmitted.

[0168] In some embodiments, the multiplexing scheme of the PSxCH and the PSCCH and / or the PSSCH is: In the case of time division multiplexing (TDM), when the symbol occupied by PSCCH / PSSCH does not include the symbol occupied by PSxCH / AGC, or when PSCCH / PSSCH transmission overlaps with PSxCH channel / PSxCH transmission / AGC, performing punturing / rate matching operation on PSCCH / PSSCH; At least one of frequency division multiplexing (FDM) is employed.

[0169] In some embodiments, the multiplexing scheme of the PSxCH and the PSFCH is: FDM, in which the PSxCH occasions overlap with the PSFCH occasions, and the time domain (pre-)arrangement of the PSFCH channel is multiplexed onto the time domain (pre-)arrangement of the PSxCH channel and / or the time domain (pre-)arrangement of the PSFCH channel is multiplexed onto the code domain (pre-)arrangement; Space division multiplexing SDM, in which the time-frequency domains of the PSxCH and the PSFCH overlap, and the (pre-) allocation of the time-frequency domain of the PSFCH channel is multiplexed onto the (pre-) allocation of the time-frequency domain of the PSxCH channel; At least one of TDM and

[0170] In some embodiments, there is an association between the PSxCH resource and the physical sidelink control channel PSCCH resource and / or the physical sidelink shared channel PSSCH resource, as shown in Fig. 3, where Conflict indication is a conflict indication and Reservation is reservation information.

[0171] In some embodiments, as shown in the left half of FIG. 3, the collision information carried on the PSxCH indicates that the PSCCH and / or PSSCH resources associated with the PSxCH resource have collided, or The collision information carried on the PSxCH indicates that a PSCCH associated with a PSxCH resource and / or a PSFCH corresponding to a PSSCH resource has collided.

[0172] Here, the protocol may only support indicating one of PSSCH and PSFCH collision, or the protocol may support indicating PSSCH and PSFCH collision, for example, different information state values ​​of PSxCH indicate PSCCH collision and PSFCH collision, respectively, or the same information state indicates PSCCH collision or PSFCH collision.

[0173] In some embodiments, as shown in the right half of FIG. 3, the collision information carried on the PSxCH indicates that the reserved PSCCH and / or PSSCH resources of the PSCCH and / or PSSCH resources associated with the PSxCH resource have collided, or The collision information carried on the PSxCH indicates that the PSFCH corresponding to the reserved PSCCH and / or PSSCH resource has collided with the PSCCH and / or PSSCH resource associated with the PSxCH resource.

[0174] The protocol may only support indicating that reserved PSCCH / PSSCH resources of one or several types of reservation information collide / cause collision. For example, the collision information indicates that reserved PSCCH and / or PSSCH resources of a preset type of reservation information collide. For example, periodic reservation, aperiodic reservation, the first aperiodic reserved PSCCH / PSSCH, the second aperiodic reserved PSCCH / PSSCH, the first PSCCH / PSSCH of the next period in periodic reservation, the second PSCCH / PSSCH of the next period in periodic reservation, etc. Indicating the occurrence of a collision earlier in this way allows the UE to take action earlier, for example, leaving the UE more time for resource selection.

[0175] Furthermore, the status information in the PSxCH also carries HARQ-ACK feedback information, and the PSxCH is in a New PSFCH format.

[0176] In some embodiments, the time domain association between the PSxCH resource and the PSCCH and / or PSSCH resource includes any one of the following:

[0177] One PSCCH or PSSCH occasion is associated with one PSxCH occasion, thus allowing for maximum multiplexing of the PSFCH design; A plurality of PSCCH and / or PSSCH occasions may be associated with one PSxCH occasion, thus maximizing the multiplexing of the PSFCH design; One PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, A plurality of PSCCH and / or PSSCH occasions are associated with a plurality of PSxCH occasions.

[0178] Here, the plurality of PSCCH and / or PSSCH occasions may be a plurality of PSCCH and / or PSSCH occasions that appear consecutively.

[0179] In some embodiments, when one PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or multiple PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, For multiple PSxCH occasions, one PSxCH resource subset in a PSxCH occasion corresponds to the one PSCCH or PSSCH occasion, or corresponds to the multiple PSCCH and / or PSSCH occasions.

[0180] In some embodiments, when one PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or when multiple PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, the contents of the indication information carried on each PSxCH occasion on the associated multiple PSxCH occasions are defined independently.

[0181] In some embodiments, an associated PSxCH occasion before a PSCCH and / or PSSCH at least indicates whether this PSCCH and / or PSSCH has collided, and an associated PSxCH occasion after a PSCCH and / or PSSCH at least indicates whether a reserved PSCCH and / or PSSCH of this PSCCH and / or PSSCH has collided.

[0182] In some embodiments, when multiple types of collision information exist based on the content carried in the PSxCH information, each type of collision information of the PSCCH or PSSCH is independently mapped to one PSxCH occasion.

[0183] Compared with the scheme in which "one or more PSCCH or PSSCH occasions are associated with one PSxCH occasion", the scheme in which "one or more PSCCH or PSSCH occasions are associated with multiple PSxCH occasions" has more flexibility in the location of transmitting collision indication information, and collisions can be indicated in a timely manner. For example, resource or transmission collisions detected at positions #1, #2, and #3 in Figure 4 can be indicated promptly.

[0184] In some embodiments, the time interval between a PSCCH and / or PSSCH occasion and an associated PSxCH occasion is K, or the minimum time interval is K, or the maximum time interval is K, where K is a length of time predefined by a protocol or configured or pre-configured by a control node.

[0185] In some embodiments, The PSCCH and / or PSSCH occasion precedes the associated PSxCH occasion, or The PSCCH and / or PSSCH occasions are after the associated PSxCH occasions.

[0186] The above content may be predefined by a protocol or configured or preconfigured by a control node. Optionally, when each PSCCH / PSSCH is associated with multiple PSxCH occasions, all the associated PSxCH occasions may be either before the PSCCH / PSSCH or after the PSCCH / PSSCH, or some may be before the PSCCH / PSSCH, or some may be after the PSCCH / PSSCH.

[0187] In some embodiments, numbering the resources of the PSCCH and / or PSSCH occasions corresponding to the PSxCH occasions; numbering the PSxCH resources on the PSxCH occasions, Each number of PSCCH or PSSCH resources corresponds to one or more numbers of PSxCH resources.

[0188] In some embodiments, the PSxCH occasion associated with a PSCCH and / or PSSCH resource and the PSFCH occasion associated with that PSCCH and / or PSSCH resource are correlated.

[0189] In some embodiments, the PSxCH occasion associated with a PSCCH and / or PSSCH resource and the PSFCH occasion associated with this PSCCH and / or PSSCH resource are in the same slot or the same symbol within the same slot.

[0190] In some embodiments, a PSxCH occasion associated with a PSCCH and / or PSSCH resource precedes a PSFCH occasion associated with that PSCCH and / or PSSCH resource; or The PSxCH occasion associated with a PSCCH and / or PSSCH resource follows the PSFCH occasion associated with this PSCCH and / or PSSCH resource.

[0191] The above content may be predefined by a protocol or configured or preconfigured by a control node, for example, the PSxCH occasion associated with a PSCCH and / or PSSCH resource is the Pth PSFCH occasion after the PSFCH occasion associated with this PSCCH and / or PSSCH resource.

[0192] In some embodiments, the PSxCH occasions associated with the PSCCH and / or PSSCH resources and the PSFCH occasions associated with the PSCCH and / or PSSCH resources are TDM.

[0193] In some embodiments, the PSxCH status information carries HARQ-ACK feedback information.

[0194] In some embodiments, the processing module is further adapted to determine a PSxCH transmission resource, and determining the PSxCH transmission resource comprises: determining a target PSCCH and / or PSSCH resource; determining a target PSxCH resource associated with a target PSCCH and / or PSSCH resource; and selecting and transmitting at least one PSxCH from the at least one target PSxCH resource.

[0195] In some embodiments, the target PSCCH and / or PSSCH resources are the collided PSCCH and / or PSSCH resources; or The target PSCCH and / or PSSCH resource is a PSCCH and / or PSSCH resource that causes a PSFCH collision; the target PSCCH and / or PSSCH resource is a third party PSCCH and / or PSSCH resource that reserves the conflicted PSCCH and / or PSSCH resource, or The target PSCCH and / or PSSCH resource is a third party PSCCH and / or PSSCH resource that reserves the PSCCH and / or PSSCH resource that causes a PSFCH collision.

[0196] In some embodiments, when the target PSCCH and / or PSSCH resource consists of multiple resources, the target PSxCH resource may be: all PSxCH resources corresponding to said plurality of resources; The PSxCH resource corresponds to one of the plurality of resources, and the one resource is the resource with the largest time domain number, the resource with the smallest time domain number, the resource with the largest frequency domain number, or the resource with the smallest frequency domain number among the plurality of resources.

[0197] In some embodiments, when the target PSCCH and / or PSSCH resource corresponds to multiple PSxCH occasions, the target PSxCH resource in at least one PSxCH occasion is selected.

[0198] In some embodiments, one PSxCH occasion is selected based on the indications in the PSxCH occasion, e.g., the resources in the selected PSxCH occasion may indicate this conflict, or At least one PSxCH occasion may be selected based on the occurrence time of the PSxCH occasion, for example, one or more PSxCH occasions closest to the current detection time, the PSxCH occasions closest to the target PSCCH / PSSCH resource, or the PSxCH occasions may be limited to be located before or after the target PSCCH / PSSCH resource.

[0199] In some embodiments, selecting and transmitting at least one PSxCH from the at least one target PSxCH resource includes any one of the following:

[0200] Select a PSxCH transmission resource based on the terminal identifier. For example, if the number of target PSxCH resources is Q (numbered sequentially), the UE will adopt the qth PSxCH resource for transmission, where q is the UE ID mod Q. This UE ID may be the UE ID of the target remote end of the "trigger or notification" signaling and / or the UE ID of the local end transmitting this PSxCH. The PSxCH transmission resource is selected based on the zone identifier, and this zone ID may be the zone ID of the target remote end that "trigger or notify" and / or the local end zone ID that transmits this PSxCH.

[0201] In some embodiments, when a PSxCH transmission and reception collide, the processing module: Abandoning reception of PSxCH or transmission of PSxCH according to rules predefined by a protocol; Abandoning reception of a PSxCH or transmission of a PSxCH according to a pre-configured rule; Abandoning reception of PSxCH or transmission of PSxCH according to rules configured by a control node; and (b) discarding PSxCH reception or PSxCH transmission based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., discarding a lower priority resource.

[0202] In some embodiments, when multiple PSxCHs to transmit collide, the processing module: If power is limited, one or more PSxCH transmissions may be discarded based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., discarding those with lower priority; If power is not limited, one of the following is performed: transmitting multiple PSxCHs at equal power; or determining the transmission power of multiple PSxCHs based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCHs, e.g., lowering the transmission power of lower priority PSxCHs relative to the transmission power of higher priority PSxCHs.

[0203] In some embodiments, when transmission of the PSxCH collides with reception of the PSFCH, the processing module: Abandoning the transmission of the PSxCH or the reception of the PSFCH according to rules predefined by a protocol; Abandoning transmission of the PSxCH or reception of the PSFCH according to a preconfigured rule; Abandoning the transmission of the PSxCH or the reception of the PSFCH according to rules configured by a control node; transmits the PSxCH or receives the PSFCH based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., may discard the one with lower priority.

[0204] Here, the rule may be that the transmission of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise the transmission of the PSxCH is abandoned.

[0205] In some embodiments, when reception of the PSxCH collides with transmission of the PSFCH, the processing module: Abandoning the reception of the PSxCH or the transmission of the PSFCH according to rules predefined by a protocol; Abandoning reception of the PSxCH or transmission of the PSFCH according to a preconfigured rule; Abandoning reception of the PSxCH or transmission of the PSFCH according to rules configured by a control node; The PSxCH is received or the PSFCH is transmitted based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., the lower priority may be discarded.

[0206] Here, the rule may be that reception of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise reception of the PSxCH is abandoned.

[0207] In some embodiments, if a PSxCH and a PSFCH transmission collide, If power is limited, the processing module - discarding the PSxCH or PSFCH according to rules predefined by a protocol or configured by a control node or preconfigured; and transmitting the PSxCH or PSFCH based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., giving priority to transmission of a higher priority resource.

[0208] If power is not limited, multiple PSxCHs and PSFCHs may be transmitted at equal power, or the transmit power of the PSxCH may be determined based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., lower priority ones may have lower transmit power than higher priority ones.

[0209] Here, the rule may be that the transmission of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise the transmission of the PSxCH is abandoned.

[0210] In some embodiments, the providing of the collision indication over the physical sidelink feedback channel PSFCH corresponding to the collision resource comprises: and feeding back a negative acknowledgement (NACK) on the PSFCH corresponding to the conflicting resource.

[0211] The collision indicator in the embodiment of the present application may be a device, or may be a component, integrated circuit, or chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. For example, the mobile electronic device may be a mobile phone, a tablet PC, a laptop computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), and the non-mobile electronic device may be a network-attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, and the embodiment of the present application is not specifically limited.

[0212] The collision indication device in the embodiment of the present application may be a device having an operating system, which may be an Android operating system, an iOS operating system, or other possible operating systems, and the embodiment of the present application is not specifically limited.

[0213] It should be noted that the execution body of the collision indication method according to the embodiment of the present application may be a collision indication device, or may be a module for executing and loading the collision indication method in the collision indication device. In the embodiment of the present application, the collision indication method according to the embodiment of the present application will be described by taking the collision indication device executing and loading the collision indication method as an example.

[0214] An embodiment of the present application provides a collision indication device for use in a second terminal 400, as shown in FIG. 14, which comprises: receiving a collision indication signaling of the first terminal; detecting a physical sidelink channel (PSxCH) corresponding to a physical sidelink control channel (PSCCH) transmission resource and / or a physical sidelink shared channel (PSSCH) transmission resource to obtain collision indication information; The method further includes an acquiring module 410 for acquiring collision indication information indicated by the first terminal by one of detecting a physical sidelink feedback channel (PSFCH) resource and acquiring information of a collision resource.

[0215] Here, the UE performs PSCCH / PSSCH transmission, and the acquisition module 410 detects the collision indication information by at least detecting the PSxCH resource corresponding to the PSCCH / PSSCH transmission resource, where the transmission resource includes a receiving resource and a transmitting resource.

[0216] The collision indication device in the embodiment of the present application may be a device having an operating system, which may be an Android operating system, an iOS operating system, or other possible operating systems, and the embodiment of the present application is not specifically limited.

[0217] Optionally, the embodiments of the present application further provide an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and operable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned collision indication method embodiment can be realized and the same technical effect can be achieved. To avoid repetition, no further description will be given here.

[0218] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices described above.

[0219] The electronic device of this embodiment may be a terminal. FIG. 15 is a hardware structural schematic diagram of a terminal for implementing the embodiments of the present application. The terminal 50 includes, but is not limited to, components such as a radio frequency unit 51, a network module 52, an audio output unit 53, an input unit 54, a sensor 55, a display unit 56, a user input unit 57, an interface unit 58, a memory 59, a processor 510, and a power supply 511. As will be understood by those skilled in the art, the terminal structure shown in FIG. 15 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than those shown, a combination of some components, or a different arrangement of components. In the embodiments of the present application, the terminal includes, but is not limited to, a mobile phone, a tablet PC, a laptop, a palmtop computer, an in-vehicle terminal, a wearable device, a pedometer, etc.

[0220] It should be understood that in the embodiment of the present application, the radio frequency unit 51 may be used to transmit and receive information or signals during a call. Specifically, it receives downlink data from a base station, processes it through the processor 510, and transmits uplink data to the base station. Generally, the radio frequency unit 51 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. It should be noted that the radio frequency unit 51 can also communicate with other devices via a wireless communication system or network.

[0221] The memory 59 may be used to store software programs and various data. The memory 59 may mainly include a program storage area and a data storage area. Here, the program storage area may store an operating system, an application program required for at least one function (e.g., audio playback function, image playback function, etc.), etc., and the data storage area may store data generated by use of the mobile phone (e.g., audio data, phone book, etc.). The memory 59 may include high-speed random access memory, or may include non-volatile memory, such as at least one magnetic disk memory device, flash memory device, or other volatile solid-state memory device.

[0222] Processor 510 is the control center of the terminal, connected to each part of the terminal via various interfaces and lines, and monitors the entire terminal by running or executing software programs and / or modules stored in memory 59, accessing data stored in memory 59, performing various functions of the terminal, and processing data. Processor 510 may include one or at least two processing units, and preferably, processor 510 may integrate an application processor and a modem processor. Here, the application processor is primarily responsible for processing the operating system, user interface, and application programs, and the modem processor is primarily responsible for processing wireless communications. As can be appreciated, the modem processor does not have to be integrated into processor 510.

[0223] The terminal 50 may further include a power source 511 (e.g., a battery) for powering each component, and preferably, the power source 511 may be logically connected to the processor 510 by a power management system, thereby enabling the power management system to realize functions such as charge / discharge management and power consumption management.

[0224] The terminal 50 also includes several functional modules not shown, which will not be further described here.

[0225] The processor 510 is adapted to, when determining that a resource or transmission conflicts, indicate to the second terminal that the resource or transmission conflicts; transmitting a collision indication signaling to the second terminal; providing a collision indication over a physical sidelink channel (PSxCH); and performing a collision indication via a physical sidelink feedback channel (PSFCH) resource corresponding to the collision resource.

[0226] In the embodiments of the present application, after determining that a resource or transmission conflicts, the first terminal can indicate to the second terminal that the resource or transmission conflicts in various ways, so that the second terminal can avoid using the conflicted resource, thereby avoiding the transmission resource or transmission conflict.

[0227] In some embodiments, the collision indication signaling comprises: Sidelink control information SCI; a media access control (MAC) element (CE); channel state information; and Sidelink feedback control information SFCI; The sidelink reference signal may be any one of a Demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), and a Phase Tracking Reference Signal (PT-RS).

[0228] For collision indication signaling, it is necessary to define its transmission time.

[0229] In some embodiments, the first time for transmitting the collision indication signaling comprises: The second time is located after the first time, and the interval between the first time and the second time is equal to or less than the first threshold, and the second time is the time when the terminal detects that the resource or transmission is colliding, i.e., the terminal needs to send the collision indication signaling within the time limit after detecting the collision; The resource is located before the collision resource, and the distance between the resource and a certain time of the collision resource is equal to or greater than a second threshold value; and The third time satisfies one of the following conditions: it is located before the third time, and the distance from the third time is equal to or greater than the third threshold, and the third time is a time when there is reservation indication signaling or indication signaling of a conflicting resource.

[0230] wherein the factor for determining the second threshold includes at least one of a signaling demodulation time length, a resource reselection processing time length, and a transmit-receive conversion time length; The factors for determining the third threshold include at least one of a signaling demodulation time length, a resource reselection processing time length, and a transmit-receive conversion time length.

[0231] In some embodiments, the PSxCH resources comprise at least one of time domain resources, frequency domain resources, and code domain resources; The time domain resource consists of L time domain basic units, which are predefined by a protocol or configured or preconfigured by a control node, where L is a positive integer, where the time domain basic unit includes a symbol, a slot, and a sub-slot, and the L time domain basic units may be L consecutive time domain basic units, for example, the time domain resource consists of one symbol or two consecutive symbols; The frequency domain resource consists of F frequency domain basic units, where F is a positive integer, that are predefined by a protocol or configured or pre-configured by a control node, where the frequency domain basic unit may be a physical resource block (PRB), a subcarrier, or a subchannel, and the F frequency domain basic units may be F consecutive frequency domain basic units, for example, one physical resource block (PRB).

[0232] The code area resource may consist of C code sequences predefined by a protocol or configured by a control node, or may be a code sequence generated according to a sequence generation rule predefined by a protocol or configured by a control node, where C is a positive integer. For example, a ZC sequence may be used to generate a set of code sequences by combining CS, u, and v. The distinguishing parameters of the C code sequences may be one or more of CS, u, and v. A typical method is to distinguish different code sequences by CS, and the C code sequences may be fixed packet sequences.

[0233] In some embodiments, the PSxCH status information may include: At least one of a time domain basic unit, a frequency domain basic unit, and a code sequence; If the PSxCH resource does not include a code domain resource, the PSxCH status information may be represented by the coding bits.

[0234] In some embodiments, a PSxCH channel consists of X PSxCH occasions in the time domain, where a PSxCH occasion includes Y PSxCH frequency domain resources, and the PSxCH channel includes Z code domain resources, where X, Y, and Z are positive integers.

[0235] where X is typically 1, and the location of the PSxCH occasion in a slot may be protocol-defined, configured by a control node, or pre-configured, with a typical location being the time-domain location of the PSFCH channel. The period of the PSxCH occasion and its starting location in the system frame number (SFN) and / or direct frame number (DFN) may be protocol-defined, configured by a control node, or pre-configured.

[0236] A PSxCH occasion includes Y PSxCH frequency-domain resources, where Y >= 1. For example, the PRB occupied by the PSxCH occasion may be indicated by a bitmap, or may be indicated by a starting position + length method, and the typical indication method is the same as the PSFCH channel indication method.

[0237] The PSxCH channel includes Z code domain resources, where Z >= 1. For example, the number of code domain resources may be derived by indicating the total number of code sequences.

[0238] Alternatively, one PSxCH occasion may be divided into multiple PSxCH resource subsets. A PSCCH / PSSCH resource may be associated with multiple PSxCH occasions, and the associated PSxCH occasions at different positions should correspond to different resource subsets, thereby preventing multiple PSCCHs / PSSCHs from being associated with the same PSxCH resource.

[0239] In some embodiments, A time domain basic units before the PSxCH occasion are used to transmit an automatic gain control (AGC) signal. For example, the symbols immediately before the PSxCH occasion are used to transmit the AGC signal. In this way, the terminal transmits the ACG signal before transmitting the PSxCH resource. Here, the A time domain basic units are adjacent to the PSxCH occasion.

[0240] Here, the frequency domain width of the signal is equal to the PSxCH frequency domain resource to be transmitted, and / or the power or power spectral density (PSD) of the signal transmission is equal to the power or PSD of the PSxCH resource transmission, and / or the signal may be a copy of a portion of the PSxCH signal, for example, the signal of the first or nth symbol of the PSxCH may be copied to an ACG symbol and transmitted.

[0241] In some embodiments, the multiplexing scheme of the PSxCH and the PSCCH and / or the PSSCH is: In the case of time division multiplexing (TDM), when the symbol occupied by PSCCH / PSSCH does not include the symbol occupied by PSxCH / AGC, or when PSCCH / PSSCH transmission overlaps with PSxCH channel / PSxCH transmission / AGC, performing punturing / rate matching operation on PSCCH / PSSCH; At least one of frequency division multiplexing (FDM) is employed.

[0242] In some embodiments, the multiplexing scheme of the PSxCH and the PSFCH is: FDM, in which the PSxCH occasions overlap with the PSFCH occasions, and the time domain (pre-)arrangement of the PSFCH channel is multiplexed onto the time domain (pre-)arrangement of the PSxCH channel and / or the time domain (pre-)arrangement of the PSFCH channel is multiplexed onto the code domain (pre-)arrangement; Space division multiplexing SDM, in which the time-frequency domains of the PSxCH and the PSFCH overlap, and the (pre-) allocation of the time-frequency domain of the PSFCH channel is multiplexed onto the (pre-) allocation of the time-frequency domain of the PSxCH channel; At least one of TDM and

[0243] In some embodiments, there is an association between the PSxCH resource and the physical sidelink control channel PSCCH resource and / or the physical sidelink shared channel PSSCH resource, as shown in Fig. 3, where Conflict indication is a conflict indication and Reservation is reservation information.

[0244] In some embodiments, as shown in the left half of FIG. 3, the collision information carried on the PSxCH indicates that the PSCCH and / or PSSCH resources associated with the PSxCH resource have collided, or The collision information carried on the PSxCH indicates that a PSCCH associated with a PSxCH resource and / or a PSFCH corresponding to a PSSCH resource has collided.

[0245] Here, the protocol may only support indicating one of PSSCH and PSFCH collision, or the protocol may support indicating PSSCH and PSFCH collision, for example, different information state values ​​of PSxCH indicate PSCCH collision and PSFCH collision, respectively, or the same information state indicates PSCCH collision or PSFCH collision.

[0246] In some embodiments, as shown in the right half of FIG. 3, the collision information carried on the PSxCH indicates that the reserved PSCCH and / or PSSCH resources of the PSCCH and / or PSSCH resources associated with the PSxCH resource have collided, or The collision information carried on the PSxCH indicates that the PSFCH corresponding to the reserved PSCCH and / or PSSCH resource has collided with the PSCCH and / or PSSCH resource associated with the PSxCH resource.

[0247] The protocol may only support indicating that reserved PSCCH / PSSCH resources of one or several types of reservation information collide / cause collision. For example, the collision information indicates that reserved PSCCH and / or PSSCH resources of a preset type of reservation information collide. For example, periodic reservation, aperiodic reservation, the first aperiodic reserved PSCCH / PSSCH, the second aperiodic reserved PSCCH / PSSCH, the first PSCCH / PSSCH of the next period in periodic reservation, the second PSCCH / PSSCH of the next period in periodic reservation, etc. Indicating the occurrence of a collision earlier in this way allows the UE to take action earlier, for example, leaving the UE more time for resource selection.

[0248] Furthermore, the status information in the PSxCH also carries HARQ-ACK feedback information, and the PSxCH is in a New PSFCH format.

[0249] In some embodiments, the time domain association between the PSxCH resource and the PSCCH and / or PSSCH resource includes any one of the following:

[0250] One PSCCH or PSSCH occasion is associated with one PSxCH occasion, thus allowing for maximum multiplexing of the PSFCH design; A plurality of PSCCH and / or PSSCH occasions may be associated with one PSxCH occasion, thus maximizing the multiplexing of the PSFCH design; One PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, A plurality of PSCCH and / or PSSCH occasions are associated with a plurality of PSxCH occasions.

[0251] Here, the plurality of PSCCH and / or PSSCH occasions may be a plurality of PSCCH and / or PSSCH occasions that appear consecutively.

[0252] In some embodiments, when one PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or multiple PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, For multiple PSxCH occasions, one PSxCH resource subset in a PSxCH occasion corresponds to the one PSCCH or PSSCH occasion, or corresponds to the multiple PSCCH and / or PSSCH occasions.

[0253] In some embodiments, when one PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or when multiple PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, the contents of the indication information carried on each PSxCH occasion on the associated multiple PSxCH occasions are defined independently.

[0254] In some embodiments, an associated PSxCH occasion before a PSCCH and / or PSSCH at least indicates whether this PSCCH and / or PSSCH has collided, and an associated PSxCH occasion after a PSCCH and / or PSSCH at least indicates whether a reserved PSCCH and / or PSSCH of this PSCCH and / or PSSCH has collided.

[0255] In some embodiments, when multiple types of collision information exist based on the content carried in the PSxCH information, each type of collision information of the PSCCH or PSSCH is independently mapped to one PSxCH occasion.

[0256] Compared with the scheme in which "one or more PSCCH or PSSCH occasions are associated with one PSxCH occasion", the scheme in which "one or more PSCCH or PSSCH occasions are associated with multiple PSxCH occasions" has more flexibility in the location of transmitting collision indication information, and collisions can be indicated in a timely manner. For example, resource or transmission collisions detected at positions #1, #2, and #3 in Figure 4 can be indicated promptly.

[0257] In some embodiments, the time interval between a PSCCH and / or PSSCH occasion and an associated PSxCH occasion is K, or the minimum time interval is K, or the maximum time interval is K, where K is a length of time predefined by a protocol or configured or pre-configured by a control node.

[0258] In some embodiments, The PSCCH and / or PSSCH occasion precedes the associated PSxCH occasion, or The PSCCH and / or PSSCH occasions are after the associated PSxCH occasions.

[0259] The above content may be predefined by a protocol or configured or preconfigured by a control node. Optionally, when each PSCCH / PSSCH is associated with multiple PSxCH occasions, all the associated PSxCH occasions may be either before the PSCCH / PSSCH or after the PSCCH / PSSCH, or some may be before the PSCCH / PSSCH, or some may be after the PSCCH / PSSCH.

[0260] In some embodiments, numbering the resources of the PSCCH and / or PSSCH occasions corresponding to the PSxCH occasions; numbering the PSxCH resources on the PSxCH occasions, Each number of PSCCH or PSSCH resources corresponds to one or more numbers of PSxCH resources.

[0261] In some embodiments, the PSxCH occasion associated with a PSCCH and / or PSSCH resource and the PSFCH occasion associated with that PSCCH and / or PSSCH resource are correlated.

[0262] In some embodiments, the PSxCH occasion associated with a PSCCH and / or PSSCH resource and the PSFCH occasion associated with this PSCCH and / or PSSCH resource are in the same slot or the same symbol within the same slot.

[0263] In some embodiments, a PSxCH occasion associated with a PSCCH and / or PSSCH resource precedes a PSFCH occasion associated with that PSCCH and / or PSSCH resource; or The PSxCH occasion associated with a PSCCH and / or PSSCH resource follows the PSFCH occasion associated with this PSCCH and / or PSSCH resource.

[0264] The above content may be predefined by a protocol or configured or preconfigured by a control node, for example, the PSxCH occasion associated with a PSCCH and / or PSSCH resource is the Pth PSFCH occasion after the PSFCH occasion associated with this PSCCH and / or PSSCH resource.

[0265] In some embodiments, the PSxCH occasions associated with the PSCCH and / or PSSCH resources and the PSFCH occasions associated with the PSCCH and / or PSSCH resources are TDM.

[0266] In some embodiments, the PSxCH status information carries HARQ-ACK feedback information.

[0267] In some embodiments, the processor 510 is further adapted to determine a PSxCH transmission resource, wherein determining the PSxCH transmission resource comprises: determining a target PSCCH and / or PSSCH resource; determining a target PSxCH resource associated with a target PSCCH and / or PSSCH resource; and selecting and transmitting at least one PSxCH from the at least one target PSxCH resource.

[0268] In some embodiments, the target PSCCH and / or PSSCH resources are the collided PSCCH and / or PSSCH resources; or The target PSCCH and / or PSSCH resource is a PSCCH and / or PSSCH resource that causes a PSFCH collision; the target PSCCH and / or PSSCH resource is a third party PSCCH and / or PSSCH resource that reserves the conflicted PSCCH and / or PSSCH resource, or The target PSCCH and / or PSSCH resource is a third party PSCCH and / or PSSCH resource that reserves the PSCCH and / or PSSCH resource that causes a PSFCH collision.

[0269] In some embodiments, when the target PSCCH and / or PSSCH resource consists of multiple resources, the target PSxCH resource may be: all PSxCH resources corresponding to said plurality of resources; The PSxCH resource corresponds to one of the plurality of resources, and the one resource is the resource with the largest time domain number, the resource with the smallest time domain number, the resource with the largest frequency domain number, or the resource with the smallest frequency domain number among the plurality of resources.

[0270] In some embodiments, when the target PSCCH and / or PSSCH resource corresponds to multiple PSxCH occasions, the target PSxCH resource in at least one PSxCH occasion is selected.

[0271] In some embodiments, one PSxCH occasion is selected based on the contents indicated in the PSxCH occasion, for example, the resources in the selected PSxCH occasion may indicate this conflict, or At least one PSxCH occasion may be selected based on the occurrence time of the PSxCH occasion, for example, one or more PSxCH occasions closest to the current detection time, the PSxCH occasions closest to the target PSCCH / PSSCH resource, or the PSxCH occasions may be limited to be located before or after the target PSCCH / PSSCH resource.

[0272] In some embodiments, selecting and transmitting at least one PSxCH from the at least one target PSxCH resource includes any one of the following:

[0273] Select a PSxCH transmission resource based on the terminal identifier. For example, if the number of target PSxCH resources is Q (numbered sequentially), the UE will adopt the qth PSxCH resource for transmission, where q is the UE ID mod Q. This UE ID may be the UE ID of the target opposite end of the "trigger or notification" signaling and / or the UE ID of the own end transmitting this PSxCH. The PSxCH transmission resource is selected based on the zone identifier, and this zone ID may be the zone ID of the target remote end that "trigger or notify" and / or the local end zone ID that transmits this PSxCH.

[0274] In some embodiments, when a PSxCH transmission and reception collide, the processor 510 Abandoning reception of PSxCH or transmission of PSxCH according to rules predefined by a protocol; Abandoning reception of a PSxCH or transmission of a PSxCH according to a pre-configured rule; Abandoning reception of PSxCH or transmission of PSxCH according to rules configured by a control node; and (b) discarding PSxCH reception or PSxCH transmission based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., discarding a lower priority resource.

[0275] In some embodiments, when multiple PSxCHs to transmit collide, the processor 510 If power is limited, one or more PSxCH transmissions may be discarded based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., discarding those with lower priority; If power is not limited, one of the following is performed: transmitting multiple PSxCHs at equal power; or determining the transmission power of multiple PSxCHs based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCHs, e.g., lowering the transmission power of lower priority PSxCHs relative to the transmission power of higher priority PSxCHs.

[0276] In some embodiments, if the transmission of the PSxCH collides with the reception of the PSFCH, the processor 510 Abandoning the transmission of the PSxCH or the reception of the PSFCH according to rules predefined by a protocol; Abandoning transmission of the PSxCH or reception of the PSFCH according to a preconfigured rule; Abandoning the transmission of the PSxCH or the reception of the PSFCH according to rules configured by a control node; transmits the PSxCH or receives the PSFCH based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., may discard the one with lower priority.

[0277] Here, the rule may be that the transmission of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise the transmission of the PSxCH is abandoned.

[0278] In some embodiments, if reception of the PSxCH collides with transmission of the PSFCH, the processor 510 Abandoning the reception of the PSxCH or the transmission of the PSFCH according to rules predefined by a protocol; Abandoning reception of the PSxCH or transmission of the PSFCH according to a preconfigured rule; Abandoning reception of the PSxCH or transmission of the PSFCH according to rules configured by a control node; The PSxCH is received or the PSFCH is transmitted based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., the lower priority may be discarded.

[0279] Here, the rule may be that reception of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise reception of the PSxCH is abandoned.

[0280] In some embodiments, if a PSxCH and a PSFCH transmission collide, If power is limited, the processor 510 - discarding the PSxCH or PSFCH according to rules predefined by a protocol or configured by a control node or preconfigured; and transmitting the PSxCH or PSFCH based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., giving priority to transmission of a higher priority resource.

[0281] If power is not limited, multiple PSxCHs and PSFCHs may be transmitted at equal power, or the transmit power of the PSxCH may be determined based on the priority of the PSCCH and / or PSSCH resources associated with the PSxCH, e.g., lower priority ones may have lower transmit power than higher priority ones.

[0282] Here, the rule may be that the transmission of the PSxCH can be performed only if the priority of the PSCCH and / or PSSCH resources associated with the PSxCH is higher than a certain threshold, otherwise the transmission of the PSxCH is abandoned.

[0283] In some embodiments, the providing of the collision indication over the physical sidelink feedback channel PSFCH corresponding to the collision resource comprises: and feeding back a negative acknowledgement (NACK) on the PSFCH corresponding to the conflicting resource.

[0284] In some embodiments, the processor 510 receiving a collision indication signaling of the first terminal; detecting a physical sidelink channel (PSxCH) corresponding to a physical sidelink control channel (PSCCH) transmission resource and / or a physical sidelink shared channel (PSSCH) transmission resource to obtain collision indication information; The PSFCH resource detection unit 100 detects the physical sidelink feedback channel (PSFCH) resource and obtains the collision resource information. The PSFCH resource detection unit 100 detects the physical sidelink feedback channel (PSFCH) resource and obtains the collision resource information.

[0285] Here, the UE performs PSCCH / PSSCH transmission, and the processor 510 detects the collision indication information by at least detecting the PSxCH resource corresponding to the PSCCH / PSSCH transmission resource, where the transmission resource includes the receiving resource and the transmitting resource.

[0286] The embodiments of the present application further provide a readable storage medium, which may be non-volatile or volatile, and stores a program or instruction on the readable storage medium, which, when executed by a processor, can realize each process of the above-mentioned collision indication method embodiment and achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0287] The processor may be the processor in the electronic device described in the above embodiment. The readable storage medium may include a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0288] The embodiments of the present application further provide a chip, the chip including a processor and a communication interface, the communication interface is coupled to the processor, the processor runs a program or instruction, and is used to realize each process of the above-mentioned embodiment of the collision indication method, and can achieve the same technical effect. In order to avoid repetition, no further description will be given here.

[0289] It should be understood that the chips referred to in the embodiments of this application may be referred to as system level chips, system chips, chip systems, or system-on-chips.

[0290] An embodiment of the present application further provides a computer program product, wherein the computer program product is stored in a non-transitory readable storage medium, and the computer program product can be executed by at least one processor to realize each process of the above collision indication method embodiment and achieve the same technical effect. In order to avoid repetition of description, no further description will be given here.

[0291] It should be noted that, in this specification, the terms "comprise," "contain," or any other variant thereof, are intended to cover the non-exclusive "comprise," whereby a process, method, article, or apparatus comprising a set of elements does not include those elements, and further includes other elements not expressly listed or inherent in such process, method, article, or apparatus. Absent further limitations, an element defined by the phrase "comprises one of," does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. It should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may include performing functions in an essentially simultaneous manner or in the reverse order based on the functionality involved. For example, the described method can be performed in a different order than described, and various steps can be added, omitted, or combined. Furthermore, features described with reference to some examples can be combined in other examples.

[0292] As will be apparent to those skilled in the art from the above description of the embodiments, the methods of the above embodiments can be realized in the form of software and a necessary general-purpose hardware platform. Of course, they can also be realized in hardware, but in many cases the former is a more preferred embodiment. Based on this understanding, the technical solution of the present application, in substance or in part contributing to the prior art, may be embodied in the form of a software product. This computer software product is stored in a storage medium (e.g., ROM / RAM, magnetic disk, optical disk) and includes several instructions for causing a terminal (which may be a mobile phone, computer, server, network device, etc.) to execute the methods described in each embodiment of the present application.

[0293] Although the embodiments of the present application have been described above in conjunction with the drawings, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not limiting. Those skilled in the art can take the teachings of the present application into account and implement many forms without departing from the spirit and scope of the claims, all of which fall within the scope of protection of the present application.

Claims

1. 1. A collision indication method executed by a first terminal, comprising: when determining that a resource or transmission will collide, instructing the second terminal that the resource or transmission will collide; Indicating to the second terminal that the resource or the transmission will collide comprises: performing a collision indication via a physical sidelink channel (PSxCH); Including, There is an association relationship between the physical sidelink channel (PSxCH) resources and the physical sidelink control channel (PSCCH) resources and / or the physical sidelink shared channel (PSSCH) resources; the collision information carried on the Physical Sidelink Channel PSxCH indicates that a reserved Physical Sidelink Control Channel PSCCH and / or Physical Sidelink Shared Channel PSSCH resource associated with the Physical Sidelink Channel PSxCH resource has collided with a reserved Physical Sidelink Control Channel PSCCH and / or Physical Sidelink Shared Channel PSSCH resource, the collision information indicates that reserved Physical Sidelink Control Channel (PSCCH) and / or Physical Sidelink Shared Channel (PSSCH) resources of a predetermined type of reservation information collide, 1. The method for indicating collisions, wherein the reserved Physical Sidelink Control Channel (PSCCH) and / or Physical Sidelink Shared Channel (PSSCH) resources of the predetermined type of reservation information include the first PSCCH / PSSCH reserved aperiodically or the first PSCCH / PSSCH of the next period in periodic reservation.

2. the physical sidelink channel (PSxCH) resource comprises at least one of a time domain resource, a frequency domain resource, and a code domain resource; The time domain resource consists of L time domain basic units predefined by a protocol or configured or preconfigured by a control node, where L is a positive integer; The frequency domain resource consists of F frequency domain basic units predefined by a protocol or configured or pre-configured by a control node, where F is a positive integer; 2. The collision indication method of claim 1, wherein the code area resource consists of C code sequences predefined by a protocol or configured or pre-arranged by a control node, or a code sequence generated by a sequence generation rule predefined by a protocol or configured or pre-arranged by a control node, and C is a positive integer.

3. The status information of the physical sidelink channel PSxCH is At least one of a time domain basic unit, a frequency domain basic unit, and a code sequence; 2. The collision indication method according to claim 1, wherein the collision indication is represented by using one of the coding bits.

4. a physical sidelink channel PSxCH time domain resource allocation scheme consisting of X PSxCH occasions, each PSxCH occasion comprising Y physical sidelink channel PSxCH frequency domain resources, and each physical sidelink channel PSxCH comprising Z code domain resources, where X, Y, and Z are positive integers; 2. The collision indication method of claim 1, wherein A time domain basic units before a PSxCH occasion are used to transmit an automatic gain control (AGC) signal.

5. The multiplexing scheme of the physical sidelink channel PSxCH and the physical sidelink control channel PSCCH and / or the physical sidelink shared channel PSSCH is as follows: Time Division Multiplexing TDM; and frequency division multiplexing (FDM), Or, The multiplexing scheme of the physical sidelink channel PSxCH and the physical sidelink feedback channel PSFCH is as follows: Frequency Division Multiplexing FDM; Space division multiplexing (SDM); 2. The collision indication method of claim 1, wherein the collision indication method employs at least one of: time division multiplexing (TDM);

6. The time-domain correlation between the physical sidelink channel PSxCH resources and the physical sidelink control channel PSCCH and / or the physical sidelink shared channel PSSCH resources is one physical side link control channel PSCCH or PSSCH occasion is associated with one PSxCH occasion; a plurality of physical side link control channel (PSCCH) and / or PSSCH occasions are associated with one PSxCH occasion; one physical side link control channel PSCCH or PSSCH occasion is associated with multiple PSxCH occasions; 2. The method of claim 1, wherein a plurality of Physical Sidelink Control Channel (PSCCH) and / or PSSCH occasions are associated with a plurality of PSxCH occasions.

7. When one physical side link control channel PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or multiple physical side link control channels PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, 7. The method of claim 6, wherein for a plurality of PSxCH occasions, one subset of physical sidelink channel (PSxCH) resources in a PSxCH occasion corresponds to the one physical sidelink control channel (PSCCH) or PSSCH occasion or corresponds to the plurality of physical sidelink control channels (PSCCH) and / or PSSCH occasions.

8. The collision indication method according to claim 6, wherein, when one physical side link control channel PSCCH or PSSCH occasion is associated with multiple PSxCH occasions, or multiple physical side link control channels PSCCH and / or PSSCH occasions are associated with multiple PSxCH occasions, the contents indicated by the indication information carried on each PSxCH occasion on the associated multiple PSxCH occasions are defined independently.

9. The collision indication method of claim 1, wherein the time interval between a physical side link control channel PSCCH and / or PSSCH occasion and an associated PSxCH occasion is K, or the minimum time interval is K, or the maximum time interval is K, where K is a time length predefined by a protocol or configured or pre-configured by a control node.

10. A physical side link control channel PSCCH and / or PSSCH occasion precedes an associated PSxCH occasion, or 2. The collision indication method according to claim 1, wherein a Physical Sidelink Control Channel PSCCH and / or PSSCH occasion follows an associated PSxCH occasion.

11. When each PSCCH / PSSCH occasion corresponds to one PSxCH occasion, the time interval between each PSCCH / PSSCH occasion and the associated PSxCH occasion is K; The PSxCH occasion associated with the PSCCH / PSSCH occasion is the first PSxCH that satisfies the interval after the PSCCH / PSSCH, or The collision indication method of claim 1 , wherein the PSxCH associated with a PSCCH / PSSCH occasion is a first PSxCH that fills the interval before the PSCCH / PSSCH.

12. A collision indication method executed by a second terminal, comprising: detecting a physical sidelink channel (PSxCH) corresponding to a physical sidelink control channel (PSCCH) transmission resource and / or a physical sidelink shared channel (PSSCH) transmission resource, and obtaining a collision indication information indicated by the first terminal; There is an association relationship between the physical sidelink channel (PSxCH) resources and the physical sidelink control channel (PSCCH) resources and / or the physical sidelink shared channel (PSSCH) resources; the collision information carried on the Physical Sidelink Channel PSxCH indicates that a reserved Physical Sidelink Control Channel PSCCH and / or Physical Sidelink Shared Channel PSSCH resource associated with the Physical Sidelink Channel PSxCH resource has collided with a reserved Physical Sidelink Control Channel PSCCH and / or Physical Sidelink Shared Channel PSSCH resource, the collision information indicates that reserved Physical Sidelink Control Channel (PSCCH) and / or Physical Sidelink Shared Channel (PSSCH) resources of a predetermined type of reservation information collide, 1. The method for indicating collisions, wherein the reserved Physical Sidelink Control Channel (PSCCH) and / or Physical Sidelink Shared Channel (PSSCH) resources of the predetermined type of reservation information include the first PSCCH / PSSCH reserved aperiodically or the first PSCCH / PSSCH of the next period in periodic reservation.

13. An electronic device comprising a processor, a memory, and a program or instructions stored in the memory and operable on the processor, which, when the program or instructions are executed by the processor, performs the steps of the method of any one of claims 1 to 11, or performs the steps of the method of claim 12.

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