RU2800586C1 - Method and device for selecting a resource in the process of direct communication, electronic device and information carrier - Google Patents

Abstract

FIELD: communication technologies.

SUBSTANCE: in the resource selection method when communicating with a direct connection, if the time interval between at least one first time block and the resource selection moment is less than the first duration threshold value or equal to the first duration threshold value, detection windows are determined. At the same time, a predetermined number of time blocks separate the initial time block of the detection window from the first block of at least one first time block, and the predetermined number is 31.

EFFECT: ability to shorten the duration of detection, so that the user equipment can select the resource faster to meet the requirements of energy saving.

20 cl, 8 dwg

Description

FIELD OF TECHNOLOGY

[0001] The disclosure of the present invention relates to the field of communication technologies, and more specifically, to a method for selecting a resource in direct connection communication, an electronic device, and a storage medium.

BACKGROUND OF THE INVENTION

[0002] With the advent of new generations of today's Internet applications, wireless technologies are becoming more demanding, which contributes to the continuous development of these technologies to meet the requirements of their applications.

[0003] Communication of vehicles with the environment (V2x, Vehicle to Everything) is an important technical tool for the implementation of transport-road interaction and solving problems associated with the safety of road traffic. V2x communication includes vehicle-to-vehicle communication (V2V, Vehicle to Vehicle), vehicle-to-infrastructure communication (V2I, Vehicle to Infrastracture), vehicle-to-pedestrian communication (V2P, Vehicle to Pedestrian). By supporting V2V, V2I, and V2P, V2x technology can effectively improve traffic security, improve traffic efficiency, and improve passenger experience. Leveraging existing cellular technologies to support V2x communications can effectively leverage existing base station installations, reduce overhead, and provide Quality of Service (QoS) services to meet V2x service requirements. Thus, in version 14/15 of the long-term evolution technology (LTE Rel-14/15, Long Term Evolution), the cellular communication network V2x is supported, namely, cellular communication based on the V2x protocol (C-V2x, Cellular based V2x).

[0004] According to the C-V2x protocol, communication between a device installed in a vehicle and other devices can be carried out through a base station and a core network, that is, the communication link between a terminal device and a base station in the source cellular network is used for uplink/downlink (UL /DL, Up Link/Do wnLink) connections, and direct connection (SL, SideLink) communication can also be done through a direct link between devices. Compared with Uu interface communication (interface between UE and wireless access network), direct connection communication has short latency and low overhead, so that direct connection communication between a device located on a vehicle vehicle, and other peripheral devices geographically located near the device placed on the vehicle, is carried out quite conveniently.

[0005] With the advent of new, fifth generation (5G) mobile communication technology, 5G (NR) technology is used in the Third-Generation Partnership Project (3GPP) version 16 to support new services and communication scenarios V2x, such as a motorcade of vehicles, sensors with a larger area of coverage, accelerated traffic and remote traffic control. In general, 5G V2x direct connection technology can provide faster data transfer rate, lower communication delay, and more reliable communication quality. However, the current 5G V2x technology considers communication between vehicle-mounted terminals, and rarely considers the requirements for terminal forms such as portable terminals (for example, in terms of energy savings).

SUMMARY OF THE INVENTION

[0006] The purpose of the disclosure of the present invention is to best meet the requirements for communication, at least the elimination of one of the technical disadvantages characteristic of the state of the art.

[0007] In accordance with a first aspect of the embodiments of the present invention, there is provided a method for selecting a resource in direct connection communication, comprising: determining at least one first time block that satisfies a discovery condition according to a set of time blocks for direct connection communication resources; wherein the set of time blocks includes one or a plurality of first time blocks; and determining a resource for transmitting data to be transmitted according to the resource in at least one first time block that satisfies the detection condition.

[0008] In accordance with a second aspect of the embodiments of the present invention, there is provided a device for selecting a resource in direct connection communication, comprising a resource determination module configured to determine at least one first time block that satisfies a detection condition, in accordance with a set of time blocks for direct connection communication resources; wherein the time block set includes one or a plurality of time blocks; and a resource selection module, configured to determine a resource for transmitting data to be transmitted according to the resource in at least one first time block that satisfies the detection condition.

[0009] In accordance with a third aspect of the embodiments of the present invention, there is provided a method for selecting a resource in direct connection communication, comprising determining at least one time block corresponding to a suitable resource according to a discovery mode; and determining a resource for transmitting data to be transmitted according to the resource in at least one time block.

[0010] According to a further implementation of the third aspect, the detection mode includes no detection before resource selection or detection before resource selection.

[0011] In accordance with a further implementation of the third aspect, determining at least one time block corresponding to a suitable resource, according to the discovery mode, includes the following operations: if discovery is not required before selecting the resource, determining at least one time block located after the selection resource, as at least one time block corresponding to a suitable resource; and if detection is performed before resource selection, determining at least one time block corresponding to a suitable resource according to the duration of the time block to be discovered and the resource selection time.

[0012] In accordance with a further implementation of the third aspect, determining at least one time block located after the resource selection moment as at least one time block corresponding to the eligible resource includes determining at least one time block located after the selection moment resource and characterized by a time interval from the time of selection of the resource, not less than the fourth threshold duration, as at least one time block corresponding to the appropriate resource.

[0013] According to a further implementation of the third aspect, the method also includes determining the duration of the time block for detection in accordance with the minimum time period for detection.

[0014] In accordance with a further implementation of the third aspect, determining at least one time block corresponding to a suitable resource according to the duration of the time block for discovery and the time of selection of the resource includes determining the moment of initial detection in accordance with the duration of the time block for discovery and the time of selection of the resource; and defining at least one time block located after the initial detection time and characterized by a time interval from the initial detection time not less than a fifth duration threshold as at least one time block corresponding to a suitable resource.

[0015] According to a further implementation of the third aspect, the method also includes detecting a channel for transmitting data to be transmitted when determining the data to be transmitted.

[0016] According to a further implementation of the third aspect, the method also includes performing the following operations: if the priority of the data to be transmitted is not less than the preset priority, and/or if the packet delay budget (PDB, Packet Delay Budget) of the data to be transmitted is not more than a sixth duration threshold, no detection before resource selection, or detection for a period less than a seventh duration threshold before resource selection.

[0017] According to a fourth aspect of the embodiments of the present invention, there is provided a direct connection resource selector, comprising a resource determination module configured to determine at least one time block corresponding to a suitable resource according to a discovery mode; and a resource selection module, configured to determine a resource for transmitting data to be transmitted according to the resource in at least one time block.

[0018] According to a fifth aspect of the embodiments of the present invention, an electronic device is provided, comprising a memory and a processor; wherein a computer program is stored in the memory, and the processor, when executing the computer program, is configured to perform the resource selection method presented in any of the further embodiments of the first aspect or the third aspect of the disclosure of the present invention.

[0019] In accordance with a sixth aspect of the embodiments of the present invention, a computer-readable storage medium in which a computer program is stored is provided. When executed by the processor, the computer program is configured to perform the resource selection method represented by any further embodiment of the first aspect or third aspect of the disclosure of the present invention.

[0020] The positive results achieved by the technical solutions presented within the scope of the embodiments of the disclosure of the present invention are described in detail below in the form of specific methods of implementation in conjunction with certain additional embodiments, some of which are not presented in this description.

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly describe the technical solutions corresponding to the embodiments of the disclosure of the present invention, the following is a brief description of the accompanying drawings used in explaining the embodiments.

[0022] FIG. 1 shows a flowchart for executing a resource selection method in direct connection communication, in accordance with a further embodiment of the disclosure of the present invention.

[0023] FIG. 2 shows a flowchart for executing a resource selection method in direct connection communication according to another embodiment of the present invention.

[0024] In FIG. 3 shows a flowchart of the principle of determining additional resources in accordance with an exemplary disclosure of the present invention.

[0025] In FIG. 4 shows a flowchart of the principle of determining additional resources in accordance with another exemplary disclosure of the present invention.

[0026] FIG. 5 shows a flow diagram of the principle of determining additional resources in accordance with another example of the disclosure of the present invention.

[0027] FIG. 6 is a block diagram of a resource selector in direct connection communication, in accordance with a further embodiment of the present invention.

[0028] FIG. 7 is a block diagram of a resource selector in direct connection communication, in accordance with a further embodiment of the present invention.

[0029] FIG. 8 is a block diagram of an electronic device applicable to some embodiments of the disclosure of the present invention.

DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in more detail, examples of which are illustrated by means of the accompanying drawings. In the present description, the same or similar elements, or elements that perform the same or similar functions, are denoted by the same reference numbers. The embodiments described with reference to the accompanying drawings are explanatory, illustrative, and are used to explain the disclosure of the present invention. Embodiments should not be construed as limiting the disclosure of the present invention.

[0031] Those skilled in the art will appreciate that the singular expressed by the terms "one", "specified" and "specific" also includes plural forms unless the context clearly dictates otherwise. In addition, it should be understood that the terms "comprises", "includes" and the like, as used in this description of embodiments of the disclosure of the present invention, indicate the presence of features, integers, steps, operations, elements and/or components, but not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or combinations thereof. It should be appreciated that if the text refers to the element "connected" or "connected" to another element, then the specified element may directly connect or connect to another element, or there may be other elements between these elements. In addition, the terms "connected" or "connected" as used in this specification include a wireless connection or connection. In this description, the term "and/or" is used to refer to any combination or all combinations of one or more related enumerated elements.

[0032] Unless otherwise indicated, all terms (including technical and scientific terms) used in this specification have the meaning generally understood by a person skilled in the art to which the disclosure of the present invention relates. The terms "user equipment (UE, User Equipment)", "terminal" or "terminal device" as used in this description may include wireless signal receiver equipment without support for the wireless transmission function, and may also include receiving and transmitting equipment that is capable of performing two-way reception and transmission over a two-way communication line. The device may contain cellular or other communication equipment equipped with a single line or multiline display; a Personal Communication Service (PCS) device that may combine voice and data processing, fax and/or data communications; a personal information device (PDA, Personal Digital Assistant), which may contain a radio, pager, Internet / Intranet access device, web browser, tablet, receiver with a calendar and / or a global positioning system (GPS, Global Positioning System); standard portable and/or pocket computer, or other device equipped with or incorporating a radio receiver and. etc. The terms "terminal", "terminal device" and "user equipment" as used in this specification may refer to portable, mobile equipment mounted on vehicles (aviation or ground) suitable or configured for local operation and/or operation in another location. , on land and/or in airspace, as a distributed unit. The terms "terminal", "terminal device" and "user equipment" as used in this specification may also refer to communication terminals, Internet terminals, music/video playback terminals such as PDAs, Mobile Internet Devices (MIDs, Mobile Internet Devices). ) and / or mobile phones equipped with music / video playback, smart television devices, set-top boxes.

[0033] In LTE V2x direct connection communication, the user (i.e., direct connection communication device, also referred to as user equipment) supports independent selection of time and frequency resources (called time frequency resources) for direct connection data transmission. If the user applies the offline resource selection mode, then a resource selection method by resource reservation based on channel discovery is used. Each user equipment during an ongoing transmission periodically reserves transmission resources for subsequent data transmission. Compared to the time-frequency resource used for the current transmission, the reserved resources are separated by a specified time period and occupy the same size and position in the frequency domain. Each user equipment needs to continuously detect reservation information transmitted over the channel by other user equipment and predict subsequent interference in time-frequency resources based on the reservation information and corresponding channel measurements. The user equipment for data transmission attempts to select a frequency-time resource with less mutual interference.

[0034] Constant channel detection leads to a significant waste of power consumed by the user equipment. As a result, LTE V2x introduces a "partial discovery" mode (mainly for portable terminals) to save power. Because the resource reservation period value in LTE V2x belongs to a limited set (e.g., the set of {100, 200, 1000} ms), for a time-frequency resource in a given time block, the reserved time positions at which transmission occurs in the time-frequency resource also belong to limited set (eg, the set of time blocks {100, 200, 300 1000} ms before the given time block). Thus, for a given duration of time positions (e.g., K time blocks), the user equipment can only detect a direct-connected transmission in the preceding part of the time blocks, e.g. blocks. Within this duration of time positions, it is possible not to miss all reserved time-frequency resources.

[0035] In the LTE V2x version, the protocol allows the user equipment to select resources only in a limited time set and provides for the discovery of all time positions that can be reserved for time-frequency resources in this time set. At other time positions, the user equipment may enter a power saving state. The minimum number of time blocks in the limited time set for resource selection by the user equipment may be limited by the base station configuration or predefined to prevent the time set from being set too small and not having suitable resources to select.

[0036] In 5G V2x, unlike LTE V2x, aperiodic resource reservation is supported. In each current transmission session, no more than one or two (configurable or predetermined) time-frequency resources of the same size can be reserved at any position within subsequent W (logical) time blocks. 5G V2x also supports periodic resource reservations, which can be enabled and disabled through configuration or presetting. Currently, W is a fixed value in the communication protocol, which is 32 logical timeslots.

[0037] In the process of developing the next version of Rel-17, direct connection optimization is discussed, in particular, how to extend direct connection to other applications, including commercial and public safety, based on the development of Rel-165G V2x. In these applications, as well as in V2P applications in V2x, energy saving is a very important requirement. Energy savings, especially for portable terminals and other devices, is a particularly important aspect to be considered.

[0038] As mentioned above, unlike LTE V2x, the 5G V2X version supports not only periodic resource reservation but also aperiodic resource reservation. In order to aperiodically reserve resources to meet the requirement of "partial discovery", ie, the discovery of resource transfer time positions in all possible reserved time blocks, new user equipment characteristics need to be defined. In addition, an important aspect to be considered is how the user equipment saves power in case of aperiodic resource reservation, especially for direct connected communication devices such as portable terminals. Of course, the solutions provided within the embodiments of the disclosure of the present invention are also applicable to any other user equipment that needs to communicate with a direct connection.

[0039] In order to better meet the requirements for communication, through the embodiments of the present invention, a method for selecting a resource when communicating with a direct connection is provided. Based on this method, power consumption of a direct connection communication device can be effectively reduced, whereby the goal of saving power of the device is achieved.

[0040] For a better understanding of the solutions presented through the embodiments of the disclosure of the present invention, the following first describes the relevant terms and technologies involved in the disclosure.

[0041] Time block: A time block described in embodiments of the disclosure of the present invention may refer to either a logical time block or a physical time block. Logical time blocks refer only to time blocks that can be used in SL communications; and physical time blocks refer to all time blocks, including both time blocks that may be used in SL communication and time blocks that may not be used in SL communication (such as time blocks configured for downlink transmission or time blocks occupied for other purposes). Time block units are not limited to embodiments of the disclosure of the present invention. For example, a time block may be a frame, subframe, slot, symbol, etc., or it may be an absolute time unit, such as 1 ms (millisecond), 1 μs (microsecond). In the following description of the embodiments, in order to better illustrate the solutions presented by these embodiments, in some examples, a time interval is taken as the unit of the time block.

[0042] Temporary block position: The position of the temporary block in the time domain. For example, the time block is the n ^th time block, the position of this time block can be considered as the n ^th position, and the first time block after this time block is the (n+1) ^th time block. In practical applications based on the different units used by the time blocks, the positions of the time blocks may also correspond to the units actually used, i.e., the description of the position of the time block may be converted to a relative description corresponding to the unit of measure of the time block. For example, if the time block unit is a time interval (slot), the position of the time block can be represented by its corresponding time interval; in another example, if the unit of the time block is an absolute time unit, such as ms (millisecond), then the number of milliseconds can be used to determine the position of the time block.

[0043] UE Time Block Detection: defines the behavior when the user equipment detects and receives a particular direct-connected communication channel or direct-connected signal within a time block and/or a measurement made by the user equipment based on the results of the detection and reception. For example, for direct-connected communication in an NR V2x system, the user equipment performs detection during a time block, and this process may include blindly detecting the Physical Sidelink Control Channel (PSCCH, Physical Sidelink Control Channel) by the NR V2x user equipment and performing an appropriate signal strength measurement. .

[0044] In order to better clarify the objectives, technical solutions and advantages of the disclosure of the present invention, the following, with reference to the accompanying drawings, describes in more detail how various additional implementations of the present invention and technical solutions of its embodiments solve the above technical problems. The specific embodiments described below may be combined with each other, and the same or similar concepts or processes may not be repeated in the description of some embodiments. Embodiments of the present invention are described below with reference to the accompanying drawings.

[0045] FIG. 1 shows a flowchart for performing a resource selection method in direct connection communication, in accordance with some embodiments of the present invention. The method may be performed by a direct-attached communication device, and more particularly by a user equipment on the transmitting side, such as a mobile terminal (eg, a user's telephone), when direct-attached communication is performed. The method, without being limited to the examples, may be applied in the fields of public safety, commercial applications, and the like. As shown in FIG. 1, the method may include the following steps.

[0046] In step S110, at least one first time block is determined that satisfies the detection condition, in accordance with the set of time blocks for direct connection communication resources; wherein the time block set comprises one or a plurality of first time blocks.

[0047] In step S120, a resource for transmitting data to be transmitted is determined according to the resource in at least one first time block that satisfies the detection condition.

[0048] It should be noted that in the disclosure of the present invention, the terms "multiple", "several", etc. represent two or more elements. Resource selection according to embodiments of the present invention includes primary resource selection or resource reselection, that is, the data to be transmitted may be initial transmission data or retransmission data. The form "resource" used in describing embodiments of the present invention is not limited, and may refer to one or more of time domain resources, frequency domain resources, code domain resources, and the like.

[0049] With regard to the user equipment on the transmitting side, the resources used for direct connection communication may indicate resources allocated to the user equipment for direct connection communication, or indicate resources in time blocks after the moment of selecting a resource from the resources allocated to the user equipment to communicate with a direct connection. It should be understood that at least one first time block that satisfies the discovery condition is one or a plurality of first time blocks that meet the discovery condition in the set of time blocks. The at least one first time block that satisfies the detection condition may be one first time block or a plurality of first time blocks in a set of time blocks.

[0050] A discovery condition is a condition for determining a time block corresponding to a suitable resource that can be used to transmit data to be transmitted. The discovery condition is a condition for determining a resource in a certain time block or blocks that can be used as a suitable resource for transmitting data to be transmitted if the user equipment on the transmitting side needs to select a resource, and the user equipment, in accordance with the discovery condition, can determine at least at least one first time block corresponding to the candidate resource as the candidate resource for transmitting the data to be transmitted.

[0051] It should be noted that the term "detection condition" is a schematic name and can be replaced by other names without limitation to the embodiments of the disclosure of the present invention.

[0052] According to the direct-attached communication resource selection method of the embodiment of the disclosure, the user equipment can quickly determine at least one first time block according to a detection condition before transmitting direct-connect communication data such that a resource is selected from a resource in the first time block that matches the detection condition. Based on this method, even if other user equipment performs aperiodic resource reservation, the user equipment on the transmitting side can quickly and conveniently select a resource that it can use for data transmission according to a detection condition. Compared with the method used in the state of the art, the power consumption of the equipment is not increased and communication requirements are better satisfied.

[0053] According to some embodiments of the disclosure of the present invention, there may be one or more first time blocks that satisfy the discovery condition, and there may be one or more resources in the first time block that satisfy the discovery condition. One or more resources may be determined based on the resources used to transmit the data to be transmitted.

[0054] In accordance with a further implementation of the disclosure of the present invention, before determining at least one first time block that satisfies a detection condition, the method also includes determining a detection condition.

[0055] In practice, time blocks at different time positions may correspond to the same or different detection conditions. That is, the detection conditions may include a variety of configuration methods. Accordingly, before determining at least one first time block that satisfies the detection condition, in accordance with the above set of time blocks, the above detection condition may first be determined, and then, in accordance with the detection condition, at least at least one first time block that satisfies the detection condition.

[0056] It should be noted that in specific applications, if the time block set contains a plurality of first time blocks, the above detection condition may be met for one first time block in the time block set or for a plurality of first time blocks in the time block set. That is, the detection condition and the first time block may be in a one-to-one or one-to-multiple relationship. For example, the detection condition may match all first time blocks, ie, a set of time blocks containing one or a plurality of first time blocks. The configuration method is not limited to the disclosures of the present invention.

[0057] According to a further embodiment of the disclosure of the present invention, the method also includes determining a detection condition in accordance with a time interval between at least one first time block and a resource selection time.

[0058] In other words, the detection condition may be characterized by a corresponding relationship with the above period of time.

[0059] It should be noted that the time partition corresponding to the "moment" of resource selection and the time partition into time blocks may be the same or different. For example, suppose the time block is a time slot, then a resource selection time may refer to a resource selection time slot or a resource selection symbol. For convenience of description, below, in some examples, the resource selection moment is described as a resource selection time block.

[0060] According to a further embodiment of the disclosure of the present invention, the method also includes performing the following operations: if the time interval between at least one first time block and the resource selection time is greater than or equal to the first duration threshold value, determining that the detection condition includes that the minimum set of time blocks to detect before said moment is empty; and if the time interval between at least one first time block and the resource selection time is less than the first duration threshold or equal to the first duration threshold, determining that the detection condition includes detecting a time block located earlier than said time by an amount not less than the second threshold duration values.

[0061] It can be seen from the foregoing description that the detection condition may be specified for one first time block or for a set of time blocks containing one or a plurality of first time blocks.

[0062] If a discovery condition is set for one time block, and the time interval between this time block and the resource selection time is greater than or equal to the first duration threshold, the user equipment may or may not perform channel discovery before resource selection. Whether discovery is performed or not, the resource in this time block can be used as a suitable resource for data transmission by the user equipment. At this point in time, the user equipment itself can determine whether to perform discovery, for example, determine whether to perform discovery, based on the current state of the user equipment, such as the current capacity of the equipment or the available memory space of the equipment, or determine whether the user equipment performs discovery. and how it is carried out, can be performed in accordance with the instruction from the base station. If the time interval between this time block and the resource selection time is less than or equal to the first duration threshold, the user equipment may only perform channel discovery in the time block prior to the resource selection time for a duration not less than the second duration threshold, and the resource in that time block can be used as a suitable resource for data transmission by the user equipment. Similarly, at this point in time, if the user equipment performs channel acquisition in a time block for a duration not less than the second duration threshold, the acquisition time may be determined by the user equipment itself or determined according to an indication from the base station. Thus, the second duration threshold corresponding to each first time block may be the same or different. Further, if the second duration threshold corresponding to each first time block is the same, then after determining according to the detection condition of the earliest first time block that satisfies the condition, the first time block located after that time block can be directly determined as the first a temporary block that satisfies the detection condition.

[0063] If a detection condition is specified for a set of time blocks and the set contains a plurality of first time blocks, then there may be a first time block characterized by a time interval from the resource selection moment not less than the first duration threshold value, and a first time block characterized by a time interval from the moment of resource selection, less than the first threshold value of duration. Thus, the detection condition may include that the minimum set of time blocks to be discovered before said resource selection moment is empty, and also include the detection of a time block located earlier than said moment by an amount not less than the second duration threshold. That is, for the above set of time blocks, the detection condition is the detection of a time block located earlier than the aforementioned moment by an amount not less than the second duration threshold, as a result of which the different detection conditions overlap. At this point in time, if at least one first time block is determined in the time block set that satisfies the detection condition, then that time block may be the first time block that satisfies the above overlap.

[0064] It can be seen that, based on this additional solution, the user equipment on the transmitting side may or may not perform channel discovery before selecting a resource, and the appropriate resource when selected or not selected may differ. If the user equipment does not perform detection, then the at least one first time block that satisfies the detection condition includes each time block whose time interval from the resource selection time is greater than or equal to the first duration threshold. If the user equipment performs discovery, then the at least one first time block that satisfies the detection condition includes each time block whose time interval from the resource selection time is less than or equal to the first threshold.

[0065] The first and second threshold values are not limited in the embodiments of the disclosure of the present invention. If the values are preconfigured, they may be determined by the user equipment in accordance with certain predefined rules. As a further solution, the first duration threshold may be a maximum amount of time to allow resources to be reserved aperiodically when communicating with a direct connection, such as the existing 32 timeslots.

[0066] In addition, it should be taken into account that the above period of time should be shorter than the PDB of the data to be transmitted, that is, the resource in at least one first time block that satisfies the detection condition should be a resource that satisfies the requirements to the delay of the data to be transmitted.

[0067] For example, as shown in FIG. 4, the time slot is used as the unit of the time block, and the first duration threshold is W (W≥1, in this example, W=32) time slots. For example, each narrow rectangle represents one time block. If resource selection is performed at time t0, that is, the resource selection time is the ^nth time slot (slot n in FIG. 4), for each time block after time slot n, more specifically for the (n+W-1) ^th slot and subsequent time blocks satisfying the requirements for the data PDB to be transmitted ([n+W-1, PDB) in FIG. 4), since the time interval with time interval n is not less than W time blocks, the detection condition corresponding to these time blocks is that the minimum set of time blocks to be discovered before the resource selection moment is an empty set, that is, these time blocks can be the first time blocks that satisfy the detection condition, whether to perform detection in the time block before ^time slot n. blocks, the corresponding detection condition may include the detection of a time block located before the resource selection time for a duration not less than the second duration threshold. Thus, only if a time block located before the resource selection moment is detected for a duration not less than the second duration threshold, then these time blocks before the (n+W-1) ^th time interval are time blocks that satisfy the detection condition.

[0068] According to a further embodiment of the disclosure of the present invention, the method also includes determining a second duration threshold in accordance with a period of time.

[0069] That is, if the above period of time is less than or equal to the first duration threshold, the minimum duration (namely, the second duration threshold) for which detection is required may correspond to the period of time. For example, the longer the time span, the smaller the second duration threshold. It can be seen from the foregoing description that the second duration threshold may be set for each first time block or for a set of time blocks containing one or a plurality of first time blocks (all first time blocks correspond to the same second duration threshold). As a further solution, if the set of time blocks meets the second duration threshold, then the second duration threshold may be determined based on the fact that a period of time satisfies a condition (e.g., a minimum) in each time period between each first time block in the set of time blocks and the moment of resource selection.

[0070] The method for determining the second duration threshold according to the length of time is not limited in the embodiments of the disclosure of the present invention. For example, it may be determined according to a period of time and a corresponding relationship. An appropriate relationship may be established between one or more time periods (or duration ranges) and a second duration threshold corresponding to each time period (or duration range). If, for example, the corresponding relationship between the duration ranges and the second duration thresholds corresponding to the duration ranges is taken, then after determining the time interval between the time block and the resource selection time, the second duration threshold can be determined according to the duration range of the time interval and the corresponding relationship.

[0071] Alternatively, the relationship between the time span and the second time threshold may be a condition that the sum of the time span and the second threshold is not less than the first time threshold, such as that the sum of the two is equal to the first threshold time. That is, the larger the gap, the smaller the second duration threshold.

[0072] For example, as shown in FIG. 5, still assume that the first duration threshold is W time blocks. Assume also that resource selection is performed at time t0, namely: in time interval n. For time blocks after time t, if the time interval between time block and time interval n is less than W time blocks, then the second time interval may be determined in according to the time span and the first duration threshold. Take as an example (n+W -X -1) ^and (X>1) a time block, the time interval between it and time interval n is WX time blocks, and the second duration threshold is equal to the first duration threshold minus the time interval, then there are X time blocks. Thus, if the user equipment continuously performs detection of X time blocks before time interval n, then the (n+WX-1) ^th time block is the time block that satisfies the detection condition, and for the (n+WX-2) ^th time block, if the user equipment continuously performs detection of X time blocks before time interval n, then (n+WX-2) ^th time block is the time block not satisfying the detection condition. That is, in this example, if the user equipment only continuously detects X time blocks before time slot n, then the time block located after the (n+WX-2) ^th time block is the second block that satisfies the detection condition, namely: one of the time blocks in the time position range [n+WX - 1, PDB) shown in FIG. 5.

[0073] According to a further embodiment of the disclosure of the present invention, the method may also include performing the following operations: if the PDB of the data to be transmitted is less than a third duration threshold or equal to a third duration threshold, determining that the detection condition includes that the minimum set of time blocks to detect before the mentioned moment is empty.

[0074] The value of the third duration threshold is not limited to embodiments of the disclosure of the present invention.

[0075] In practice, based on this additional solution, if the PDB of the data to be transmitted is small (i.e., less than or equal to the third duration threshold), that is, the data delay requirements are relatively high, then at this point in time, the user equipment at the transmitting the side performs or does not perform channel discovery before resource selection. For example, the user equipment may determine whether to perform discovery according to the current state of the equipment.

[0076] According to a further embodiment of the disclosure of the present invention, the method also includes determining a third duration threshold in accordance with the received first indication information and/or determining a third duration threshold in accordance with the priority of the data to be transmitted.

[0077] The first indication information may be direct indication information or explicit indication information for a duration threshold value, such as a direct indication of a duration threshold value, or implicit indication information, such as an identifier corresponding to a duration threshold value (for example, an indicator value), in order to so that the user equipment can determine the duration threshold. The first indication information may also be an indication of a transformation relationship. After the user recognizes that a transform relationship has been received, a third threshold may be determined based on the transform relationship. For example, a transform relationship may be defined between each index value of a certain parameter or some parameters and a corresponding duration threshold for each index value. The above one or more parameters may be a hardware parameter(s) of the user equipment, such as power or available memory of the user equipment, and may also be a parameter(s) of data to be transmitted, such as the priority of data to be transmitted.

[0078] Additionally, the base station may transmit indication information to the user equipment using high-level signaling or other methods.

[0079] According to a further embodiment of the disclosure, determining a third duration threshold according to a priority of the data to be transmitted includes determining a third duration threshold according to a priority of the data to be transmitted and a first relationship between the data priorities and the third duration thresholds.

[0080] Additionally, the first mapping relationship may be pre-configured, i.e., preset or transmitted by the base station to the user equipment, and the user equipment may determine a third duration threshold corresponding to the priorities of the data to be transmitted, in accordance with the priority of the data to be transmitted, and relationship.

[0081] According to another additional method, the above first transformation relationship may be preconfigured. If the user equipment determines the third duration threshold and the above first indication information is received from the base station, the user equipment may determine the third duration threshold according to the indication information, or determine the third duration threshold according to the indication information and determine another third threshold. duration according to the relationship and priority of the data to be transmitted, and then, as the third duration threshold, determine the larger of the two duration thresholds or the smaller of the two duration thresholds. If the user equipment does not receive the first indication information from the base station, then the user equipment may determine a third duration threshold according to a preconfigured relationship.

[0082] According to an additional variant of the disclosure of the present invention, the method also includes determining the minimum duration of detection.

[0083] According to a further solution, the minimum channel acquisition duration required by the user equipment may be limited. Based on this decision, a condition can be set that the user equipment needs to detect a time block for a time not less than the minimum duration, regardless of whether it is determined that the user equipment needs to perform detection based on other information before selecting a resource, or the user equipment it is required to perform discovery only for a discovery time not less than the minimum duration if it is determined that discovery should be performed, and according to this condition, discovery is not required to be performed if it is determined that discovery should not be performed. That is, the minimum duration may only act as a constraint if the user equipment performs discovery, or as a general constraint before resource selection for the user equipment.

[0084] According to a further embodiment of the disclosure, determining the minimum acquisition duration includes determining the minimum duration in accordance with the received second indication information and/or determining the minimum duration in accordance with the priority of the data to be transmitted.

[0085] This principle is similar to that used when receiving the above first indication information. The second indication information may be minimum duration indication information (explicit or implicit indication information) or conversion relationship indication information. If this indication information is a mapping relationship, such as a mapping relationship between data priorities and a duration corresponding to each data priority (the relationship may be one-to-one or a many-to-one relationship), the user equipment can determine the duration according to the relationship and an index value of one or more equipment parameters, and the duration in this case is the above minimum duration.

[0086] According to a further embodiment of the disclosure, determining a minimum duration according to a priority of data to be transmitted includes determining a minimum duration according to a priority of data to be transmitted and a second relationship between data priorities and minimum durations.

[0087] The second transform relationship may be received by the user equipment from the base station, for example, the base station may transmit it to the user equipment using high-level signaling in order to indicate it to the user equipment through Radio Resource Control (RRC) signaling or other signaling dynamic control, or this alarm can be pre-configured.

[0088] According to this additional solution, different minimum durations may correspond to data to be transmitted with different priorities. For example, according to a further method, the higher the priority of the data to be transmitted, the shorter the corresponding minimum duration. For high priority transmission, other direct-connected communication user equipment may attempt to resolve the contention in the high priority transmission, that is, if a resource is selected, or if a conflict is detected, the resource is reselected to eliminate the high priority transmission, so a relatively short detection duration is selected; accordingly, a relatively long duration is chosen for low priority data transmission to reduce the potential for collision. According to a further method, the higher the priority of the data to be transmitted, the relatively longer the corresponding minimum duration may be chosen so that the user equipment can select a resource with relatively less delay when transmitting the high priority data.

[0089] According to a further method, the second transformation relationship may be pre-configured. At this point in time, if the user equipment receives the above second indication information from the base station, the minimum duration may be determined according to the indication information, or the minimum duration may be determined according to the indication information, and another minimum duration may be determined according to the data priority. and the second relationship, and then the smaller or larger of the two determined values is selected as the final minimum duration. If the user equipment does not receive the second indication information from the base station, then the minimum duration may be determined according to the priority of the data to be transmitted and the second preconfigured relationship.

[0090] According to a further embodiment of the disclosure of the present invention, the method may also include detecting a channel for transmitting data to be transmitted when determining the data to be transmitted.

[0091] In other words, the condition for activating the user equipment to start discovery may be the arrival of new data, that is, the presence of data to be transmitted. If there is no data to be transmitted, channel discovery may not be performed, and if new data needs to be transmitted and no resources are available, the user equipment starts discovery.

[0092] FIG. 2 shows a flowchart for performing a resource selection method in direct connection communication, in accordance with some embodiments of the present invention. The method may be performed by the user equipment on the transmitting side. As shown in FIG. 2, the method may include the following steps.

[0093] In step S210, at least one time block corresponding to a suitable resource is determined according to the discovery mode.

[0094] In step S220, a resource for transmitting data to be transmitted is determined in accordance with the resource in at least one time block.

[0095] When communicating with a direct connection, the user equipment (such as a mobile phone) before transmitting data is required to determine the resource(s) that can be used for data transmission, that is, the appropriate resource(s), and randomly or in accordance with certain rules select from the appropriate resources the resource used for data transfer.

[0096] Additionally, since the time position of the time block in which the candidate resource is located must be after the moment of selection of the resource (see the description of "moment" in the additional embodiment above), at least one time block corresponding to the candidate resource can be determined based on the moment of resource selection. For example, if only the PDB of data to be transmitted can be considered, a resource in at least one time block located after the time of resource selection and satisfying the data transmission delay requirements as the latest is used as a suitable resource, and the resource used for data transmission, is selected from the resources in these time blocks, i.e. the set of time blocks containing these time blocks can be used as the set of time blocks in which suitable resources are located, and the resources in the time blocks in the set can be suitable resources for direct connection communication .

[0097] For example, a time interval is a unit of a time block, and a resource selection moment is a resource selection time block. As shown in FIG. 3, the narrow boxes correspond to the time interval. It is assumed that the user selects a resource at time t0 (within ^{the nth} time slot, ie time slot n in FIG. 3). Additionally, a resource in each time block located after time slot n that satisfies the requirements of the PDB of the data to be transmitted (i.e., satisfies the requirements of the PDB after time III) can be used as the eligible resource, that is, the eligible resources in this example are in time blocks in the range [n+1, n+1+PDW), where PDW represents the number of time blocks corresponding to the data PDB to be transmitted.

[0098] It should be noted that after determining the suitable resources, the method for determining the transmission resource of data to be transmitted from the suitable resources is not limited in the embodiments of the disclosure of the present invention. For example, selection from suitable resources may be arbitrary or according to certain rules. For example, the R16 direct connection resource selection method may be reused for resource selection.

[0099] According to a further disclosure, the detection mode includes no detection before resource selection or detection before resource selection. In other words, one mode is a detection mode and the other mode is a non-detection mode. It should be noted that the name of the detection mode is not limited to the embodiments of the disclosure of the present invention.

[00100] Several additional options for determining suitable resources are described below.

[00101] In accordance with a further implementation of the disclosure of the present invention, the above-described step S210 of determining at least one time block corresponding to the discovery mode includes performing the following operations: if discovery is not required before selecting a resource, determining at least one time block located after the moment of selecting the resource, as at least one time block corresponding to the appropriate resource; and if detection is performed before resource selection, determining at least one time block corresponding to a suitable resource according to the duration of the time block to be discovered and the resource selection time.

[00102] In other words, according to the solution corresponding to the disclosure of the present invention, two modes of determining suitable resources can be provided. One of the modes is a suitable resource determination mode in which the user equipment does not perform detection before selecting a resource, and another suitable resource determination mode is a suitable resource determination mode in which the user equipment performs detection before selecting a resource. Embodiments of the disclosure of the present invention may not be limited to the detection or non-detection modes selected by the user equipment. If the user equipment needs to transmit data, it can determine the mode in which discovery is performed or not performed, either by itself or in accordance with an indication of the base station. For example, the user equipment may determine the detection mode or non-detection mode according to its current state (eg, power), the priority of the data to be transmitted, or other factors.

[00103] In accordance with a further implementation of the disclosure of the present invention, determining at least one time interval located after the moment of selection of the resource, as at least one time block corresponding to the appropriate resource, includes determining at least one time block located after the moment selection, characterized by a time interval from the time of selection of the resource, not less than the fourth threshold duration, as at least one time block corresponding to the appropriate resource.

[00104] For the decision that discovery is not performed, a time block that satisfies the PDB requirements for data to be transmitted and is located after the resource selection moment can be directly determined as a time block in which the suitable resource is located, that is, the resource in the time block after the resource selection point can be used as the appropriate resource. At this point in time, the user equipment does not need to perform discovery, and this can be considered as not reserving all suitable resources by other user equipment, so that the resource for data transmission in direct connection communication can be directly selected from suitable resources, randomly or according to certain rules. . For example, the R16 direct connection resource selection method may be reused for resource selection.

[00105] In practical applications for resources in time blocks, after the resource is selected, other user equipment may reserve the same resources. For example, other user equipment may make non-periodic reservations on these resources. In order to eliminate as much as possible conflicts with other user equipment when reserving resources, in the form of another alternative method, a time block characterized by a time interval from the moment of resource selection not less than the fourth threshold duration value, and located after the moment of resource selection, is defined as a time block corresponding to appropriate resource in order to reduce or eliminate contention between its own resources and resources reserved by other user equipment.

[00106] The value of the above fourth duration threshold is not limited to embodiments of the disclosure of the present invention. As an additional method, for example, to resolve conflicts between eligible resources and resources reserved by other user equipment during aperiodic resource reservations, the duration threshold may be equal to the maximum amount of time for resource reservation that is allowed for the user equipment when making aperiodic resource reservations in the process. connections with a direct connection. Consider, as an example, communication in a 5G V2x system. It follows from the above description that when the user equipment performs aperiodic resource reservations, each current transmission session can make reservations at any location within subsequent W time blocks. That is, if a user equipment selects a resource, the latest time block in which another user equipment can reserve the resource before the resource selection time is the (W-1) ^th time block after the resource selection time. In this case, the W time blocks constitute the maximum amount of time allowed for an aperiodic resource reservation when communicating with a direct connection. For communication in a 5G V2x system, the maximum time span is 32 timeslots.

[00107] It should be noted that the above fourth duration threshold in the embodiments of the present invention, when communicating in a 5G V2x system, may be the above value equal to W time blocks, or another duration threshold may be used, negotiated in the protocol or defined by the user equipment according to the indication information transmitted by the base station. For convenience of description, in some additional embodiments, a maximum time span of W time blocks is used as an example.

[00108] According to this additional solution, the user equipment may not perform discovery before selecting a resource, that is, it may directly select a resource to reduce the energy consumed upon discovery, but this limits the time location corresponding to the resource that the user equipment can select. The user equipment may select the resource only after the (W-1) ^th time block (based on the resource selection time block). For example, when using the resource selection window concept, the start position of the resource selection window is delayed to at least (W-1) ^th time block, that is, if the user selects a resource in time block n (the n ^th time block), then the starting position of the selection window the resource is not earlier than time block n+W-1 (including time block n+W-1).

[00109] For example, the unit of a time block is a time interval. As shown in FIG. 4, it is assumed that resource selection is performed by the user equipment at time III (in the ^nth time slot, i.e., time slot n shown in FIG. 4), and the maximum amount of time for aperiodic resource reservation before slot n is W times blocks (in this example, 32 timeslots are used). As shown in FIG. 4, it is also assumed that the other user equipment makes a resource reservation at time t0 - 1 before time t0 (corresponding to the (n-1) ^th time block), and the latest time block that the user equipment can reserve is (n+ w - 2) ^th time block (time slot n+W-2 in FIG. 4). That is, an aperiodic resource reservation before time slot n may fail to make a resource reservation in the time block located after the (n+w-2) ^th time block, and if the resource currently selected by the user equipment is located after (n+w -2) ^th time block (including (n+w-1) ^th time block), this can eliminate conflicts with reserved resources. That is, in this example, resource selection may be performed from resources in time blocks located in the range [n+W - 1, PDW). As shown in FIG. 4, a resource in an (n+W) ^th time block may be selected for data transmission (selected resource in FIG. 4).

[00110] In accordance with the optional discovery before resource selection decision, the method for determining the length of the time block for discovery before the resource selection time is not limited to the disclosure of the present invention. For example, the user equipment may make the determination in accordance with one or more factors such as base station configuration, protocol negotiation, or the user equipment's own capabilities. In order to reduce the power consumption of the user equipment, the duration of the discovery performed by the user equipment before the time of resource selection may be less than a predetermined duration, for example, less than the maximum period of time allowed for aperiodic resource reservation when communicating with a direct connection, that is, the user can perform discovery for less than W time blocks before resource selection.

[00111] Additionally, the above first duration may include determining the duration of the time block for detection in accordance with the minimum time period for detection.

[00112] In other words, the duration of the time block for detection should not be less than the minimum duration. An explanation of the minimum duration is given in the foregoing description. For example, the minimum duration may be preconfigured or indicated by the base station using signaling such as RRC signaling or other dynamic control signaling, or may be determined based on the priority of the data to be transmitted.

[00113] It should be noted that if the user equipment performs acquisition in accordance with the minimum duration, it may perform resource acquisition with the same minimum duration, or may perform resource acquisition with a duration greater than the minimum. For example, if the minimum duration is 10 time blocks, the user equipment is required to perform discovery for at least 10 time blocks before selecting a resource. Assuming that the user equipment performs detection of at least the minimum duration, the duration of detection is not limited to embodiments of the disclosure of the present invention. For example, the duration may be determined in a predetermined manner or in combination with an indication from the base station, or determined in other ways. For example, the user equipment may also determine it according to its own capabilities, the priority of the data to be transmitted, or other factors.

[00114] In accordance with a further disclosure of the present invention, if discovery is performed prior to resource selection, determining at least one time block corresponding to a suitable resource according to the duration of the time block for discovery and the resource selection time includes determining an initial discovery time according to the duration the time block for discovery and the moment of resource selection; and determining at least one time block located after the initial detection time and having a time interval from the initial detection time not less than a fifth duration threshold as the at least one time block corresponding to a suitable resource.

[00115] The temporal granularity for the initial discovery time and the time block may be the same or different, and clarification regarding the resource selection time is given above. The value of the fifth duration threshold is not limited to embodiments of the disclosure of the present invention. For example, this value may be the same as or different from the fourth duration threshold described above.

[00116] Based on this additional solution, the user equipment can perform detection during the period of time preceding the selection of the resource, and based on the start time of detection, a time block located after this time block and characterized by a time interval from the start of detection, not less than the fifth threshold duration may be defined as a time block corresponding to a suitable resource. Further, arbitrarily or according to certain rules, a resource can be selected from the resources in these time blocks for transmitting data to be transmitted. Compared with the decision that without detection as a time block corresponding to a suitable resource, at least one time block located after the resource selection moment and characterized by a time interval from the resource selection moment not less than the fourth duration threshold value can be determined, according to this additional decision, the user equipment can select a resource with less delay.

[00117] According to the additional solution, it is assumed that the user equipment selects a resource in the n ^th time block and starts the discovery for continuous X time blocks before selecting the resource, that is, the start time of detection is located in the (n-X) ^th time block, and the fifth threshold value duration is W time blocks, and the user equipment can select a resource located after the (WX-2) ^th time block (the n ^th time block is taken as the start time block). For example, when using the concepts of discovery window and resource selection window, it is assumed that the user selects a resource in time block n, the discovery window is [nX, n-Tproc), and the start position of the resource selection window should not begin earlier than time block n+WX-1 (including time block n+WX-1), where Tproc is the necessary processing time required by the user equipment to obtain a detection result.

[00118] For example, the unit of the time block is time interval, and Tproc=0. As shown in FIG. 5, it is assumed that the user equipment is currently selecting a resource at time t0 (in the ^nth time slot, i.e., time slot n shown in FIG. 5), and the user equipment detects X time blocks before selecting the resource, i.e. the user equipment performs detection within [nX, n). The user equipment selects a resource in time block n, and outside the listening window (i.e., before time block nX and (nX-1) ^th time block, as shown in FIG. 5 in this example), the resource can be reserved until the latest (n +WX-2) ^{of the th} time block, that is, the latest time block is the (n+WX-2) ^th time block (time slot n+WX-2 in FIG. 5). In this example, the maximum amount of time allowed for aperiodic resource reservations when communicating with a direct connection is 32 timeslots. Let us take as a schematic illustration an example in which W=32. Thus, setting the initial resource selection position at location n+WX-1 can eliminate conflicts when reserving a resource outside the listening window. As shown in FIG. 4, the suitable resource range in this example is the resources in each time block within the time range [n+WX-1, PDB), and the resource used for data transmission may be selected from the resources in these time blocks, with the selection method is not limited to the embodiments of the disclosure of the present invention. For example, it can be chosen arbitrarily or according to certain rules.

[00119] It may be noted that in the above further disclosure of the present invention, the user equipment may not perform discovery before resource selection, or may perform discovery for a period of time. Regardless of the method chosen, compared to the existing solution, the user equipment can reduce the duration of detection, thereby meeting the requirements for saving power consumption.

[00120] According to a further embodiment of the disclosure of the present invention, the method also includes detecting a channel for transmitting data to be transmitted when determining the data to be transmitted.

[00121] In other words, the condition for activating the user equipment to start discovery may be the arrival of new data.

[00122] According to a further embodiment of the disclosure of the present invention, the method also includes performing the following operations: if the priority of the data to be transmitted is not less than the preset priority, and/or if the PDB of the data to be transmitted is not greater than the sixth duration threshold, no detection before selection resource or detection for a duration less than the seventh duration threshold before selecting the resource.

[00123] That is, for high priority data transmission sessions or transmissions with high latency requirements, the user equipment may select a non-detection or detection mode, but with a shorter duration (ie, less than the sixth duration threshold).

[00124] The values of the sixth duration threshold or the seventh duration threshold described above are not limited in the embodiments of the present invention, and may be pre-configured or indicated by the base station to the user equipment. Additionally, the method for determining the sixth duration threshold may be the above method for determining the third duration threshold, that is, any additional method for determining the third duration threshold described above may be used to determine the duration. For the seventh duration threshold, different fourth duration thresholds may be configured for different types of user equipment. For example, a user equipment in a V2P system may be configured with a relatively short duration threshold to save power.

[00125] According to this additional solution, a lower priority limit of the data to be transmitted can be set to limit the user equipment to non-detection or detection modes only for a short period of time. If only the priority of the data to be transmitted is not lower than the lower bound (ie, the set priority), the user equipment may not perform detection before selecting a resource, or perform insufficiently long detection before selecting a resource. The above sixth duration threshold makes it possible to fulfill the requirement that the PDB of data to be transmitted satisfies modes in which detection is not performed or is performed for a relatively short duration. Only if this requirement is met, the user equipment may not perform discovery or perform discovery based on a partial duration before discovering the resource. Alternatively, the sixth duration threshold is assumed to be W+A time blocks, where A is a positive number greater than zero. The user equipment is allowed not to perform discovery or to perform discovery based on partial duration before resource selection only if PDB≤W+A (ie, W+A of time blocks). The value of A may be predefined or be a preconfigured value. In practice, the value of A may be greater than 0. This value is chosen because if the PDB is only slightly larger than W time blocks, and a decision is used to select the resource according to the example shown in FIG. 3, or a solution corresponding to the example shown in FIG. 4, the number of time blocks that the user equipment can select may be small, which affects the quality of the resource selection.

[00126] According to the PDB constraint method, the sixth duration threshold may be a fixed value or different values corresponding to different priorities of the data to be transmitted. For example, a higher priority may correspond to a relatively large duration threshold, such as parameter A described above, which is set to a higher value in order to provide a relatively larger amount of suitable resources for the user equipment.

[00127] Additionally, for deciding that at least one time block located after the resource selection moment and characterized by a time interval from the resource selection moment not less than the fourth duration threshold value is determined as the time block corresponding to the appropriate resource, the above the sixth duration threshold is not less than the fourth duration threshold. For the decision that at least one time block located after the start of detection, characterized by a time interval from the moment of selection of the resource, not less than the fifth threshold duration value, is determined as a time block corresponding to the appropriate resource, the sixth threshold value of duration is not less than the fifth duration threshold.

[00128] As shown in the example of FIG. 4, resource selection is assumed to be performed in time block n and the fourth duration threshold is W time blocks. The time block corresponding to the earliest eligible resource that is located after time block n and characterized by a time interval with time block n not less than the fourth threshold is time block n+W-2, and the time difference is W-1 time blocks. Similarly, for the detection method, the fifth duration threshold is also assumed to be W time blocks. As shown in the example in FIG. 5, the time interval between the resource that can be selected and the resource from which discovery starts is not less than W-1 time blocks. It is assumed that discovery is activated by data arrival, and the time difference from data arrival to resource selection should be at least W-1 time blocks, regardless of the definition of a time block located after the resource selection moment and characterized by a time interval from the resource selection moment not less than a fourth duration threshold, as a time block corresponding to a suitable resource, or from a definition of a time block located after the start of detection and characterized by a time interval from the start of detection not less than a fifth duration threshold, as a time block corresponding to a suitable resource. Both methods must satisfy the requirement that the PDB of the data to be transmitted is at least W time blocks, that is, the sixth duration threshold is at least the fourth duration threshold or at least the fifth duration threshold, and the user equipment can have the right resources to choose from.

[00129] Thus, for some services with stringent delay requirements (eg, PDB<W time blocks), the user equipment according to the above method may not select a suitable resource. To transmit overhead data with stringent delay requirements, the user equipment may perform the following operations.

[00130] The user equipment may select from suitable resources that satisfy the requirements of the PDB after the resource is selected. That is, in the example shown in FIG. 4, the resource may be selected from resources located after time block n and before time block n+W-1. In the example shown in FIG. 5, the resource may be selected from resources located after time block n and before time block n+W-X-1. For example, using the resource selection window concept, if the user equipment selects a resource at time t0 and the sixth duration threshold is W time blocks, and if PDB<W time blocks, the user equipment can select from resources located after III+Tproc2 and before III+PDB, where Tproc2≥0 denotes the required processing time for data transfer after the user selects the resource.

[00131] According to another alternative, since other user equipment may reserve resources within time blocks that meet the delay requirements, and if discovery is not performed before resource selection, the selected resource may conflict with other user equipment's resource reservation. In this case, if the PDB of the data to be transmitted is less than the sixth duration threshold, the user equipment may also perform detection for a relatively short duration. Additionally, the acquisition duration may correspond to the PDB of the data to be transmitted. According to the results of the discovery, a resource is selected from among the resources that meet the latency requirements to eliminate or reduce the risk of conflicts between the selected resources and resources reserved by other user equipment.

[00132] Based on the solutions presented by various further embodiments of the disclosure of the present invention, the user equipment can reduce the detection duration when selecting a resource, and accordingly select a resource for data transmission located after a certain period of time, which can effectively reduce the power consumption of the direct-connected communication user equipment and ensure energy saving. The solutions are particularly suitable for any direct-attached communications equipment, in particular for direct-attached communications scenarios with increased energy saving requirements, such as V2P communications scenarios.

[00133] It should be noted that for the solutions represented by various additional embodiments of the disclosure of the present invention, the principles of implementation in various embodiments may mutually refer to each other.

[00134] Based on the same principles as the method of FIG. 1 and presented within the scope of the disclosure of the present invention, by means of some embodiments of the disclosure, a resource selection device is provided in connection with a direct connection. As shown in FIG. 6, device 100 may include a resource determination module 110 and a resource selection module 120.

[00135] The resource determination module 110 is configured to determine at least one first time block that satisfies the detection condition, in accordance with the set of time blocks for direct connection communication resources; wherein the time block set comprises one or a plurality of first time blocks.

[00136] The resource selection module 120 is configured to determine a resource for transmitting data to be transmitted according to a resource in at least one first time block that satisfies a detection condition.

[00137] Additionally, the resource determination module 110 is also configured to determine a detection condition in accordance with the time interval between the at least one first time block and the resource selection time.

[00138] Additionally, the resource determination module 110 is also configured to perform the following operations: if the time interval between the at least one first time block and the resource selection time is greater than or equal to the first duration threshold, determining that the detection condition includes that the minimum set of time blocks to detect before said moment is empty; and if the time interval between at least one first time block and the resource selection time is less than or equal to the first duration threshold, determining that the detection condition includes detecting a time block located earlier than said time by an amount not less than the second threshold duration values.

[00139] Additionally, the resource determination module 110 is also configured to determine a second duration threshold according to a period of time.

[00140] Additionally, the resource determination module 110 is also configured to determine that the detection condition includes that the minimum set of time blocks for detection before said point is empty if the PDB of the data to be transmitted is less than or equal to the third duration threshold. duration value.

[00141] Additionally, the resource determination module 110 is also configured to determine a third duration threshold in accordance with the received first indication information and/or determine a third duration threshold in accordance with the priority of the data to be transmitted.

[00142] Additionally, when determining the third duration threshold according to the priority of the data to be transmitted, the resource determination module 110 is configured to: determine the third duration threshold according to the priority of the data to be transmitted and the first relationship between the priorities of the data and the third thresholds. duration values.

[00143] Additionally, the resource determination module 110 is also configured to determine a minimum acquisition duration.

[00144] Additionally, when determining the minimum acquisition duration, the module 110 is configured to determine the minimum duration in accordance with the received second indication information and/or determine the minimum duration in accordance with the priority of the data to be transmitted.

[00145] Further, when determining the minimum duration according to the priority of the data to be transmitted, the resource determination module 110 is configured to determine the minimum duration according to the priority of the data to be transmitted and the second relationship between the data priorities and the minimum durations.

[00146] Additionally, the resource determination module 110 is also configured to transmit data to be transmitted when determining the data to be transmitted.

[00147] Based on the same principles as the method of FIG. 2 and presented within the scope of the disclosure of the present invention, by means of some embodiments of the disclosure, a resource selection device is provided in connection with a direct connection. As shown in FIG. 7, device 200 may include a resource determination module 210 and a resource selection module 220.

[00148] The resource determination module 210 is configured to determine at least one time block corresponding to a suitable resource according to the discovery mode.

[00149] The resource selection module 220 is configured to determine a resource for transmitting data to be transmitted according to the resource in at least one first time block.

[00150] Additionally, the detection mode includes no detection before resource selection or detection before resource selection.

[00151] Additionally, the resource determination module 210 is also configured to perform the following operations: if detection is not required before resource selection, determining at least one time block located after the resource selection moment as at least one time block corresponding to a suitable resource; and if detection before resource selection is performed, determining at least one time block corresponding to an appropriate resource according to the duration of the time block for discovery and the resource selection time.

[00152] Additionally, the resource determination module 210 is also configured to determine at least one time block located after the resource selection moment and characterized by a time interval from the resource selection moment not less than a fourth duration threshold, as at least one time block, corresponding to a suitable resource.

[00153] Additionally, the resource determination module 210 is also configured to determine the length of the time block for discovery according to the minimum duration of discovery.

[00154] Additionally, the resource determination module 210 is also configured to determine the initial acquisition time according to the duration of the acquisition time block and the resource selection time, and to determine at least one time block located after the initial acquisition time and characterized by a time interval from the initial acquisition time. , not less than the fifth duration threshold, as at least one time block corresponding to a suitable resource.

[00155] Additionally, the resource determination module 210 is also configured to detect a channel for transmitting data to be transmitted when determining the data to be transmitted.

[00156] Additionally, the resource determination module 210 is also configured to perform the following operations: if the priority of the data to be transmitted is not less than the preset priority, and/or if the PDB of the data to be transmitted is not greater than the sixth duration threshold, preventing detection before selecting resource or detection for a duration less than the seventh duration threshold before selecting the resource.

[00157] It should be noted that since the devices provided in the embodiments of the disclosure of the present invention can perform the methods presented in these variants, based on these methods, those skilled in the art can understand how devices can be implemented and modified according to their embodiments. Thus, the following does not describe in detail how the devices implement the methods according to the embodiments of the disclosure of the present invention. As long as those skilled in the art implement the methods according to the embodiments of the disclosure, all devices do not conflict with the scope of the disclosure of the present invention.

[00158] The device presented within the scope of the disclosure of the present invention may be implemented as a user equipment. The user equipment includes at least one processor that can perform any method according to additional embodiments of the disclosure of the present invention.

[00159] Based on the same principle as the method, embodiments of the disclosure of the present invention provide an electronic device. An electronic device includes a processor and a memory that stores a computer program, when executed by the processor, the method according to any further embodiment of the disclosure of the present invention is carried out.

[00160] Embodiments of the disclosure also provide a computer-readable storage medium that stores a computer program. When the computer program is executed by the processor, the method according to any further embodiment of the disclosure of the present invention is implemented.

[00161] In the example of FIG. 8 is a block diagram of an electronic device applicable to some embodiments of the disclosure of the present invention. The electronic device may be implemented as a direct connected communications user equipment, such as a smartphone, which may be used to implement the method according to any further embodiment of the disclosure of the present invention.

[00162] As shown in FIG. 8, electronic device 2000 may include components such as at least one processor 2001, memory 2002, communication interface 2003, input/output interface 2004, and power component 2005. Each of the components can connect and interact with other components through the 2006 bus.

[00163] The power component 2005 is configured to provide operational power to the electronic device 2000, and the power component 2005 may include, but is not limited to, a battery, a charger interface, a charger protection circuit, and the like.

[00164] Memory 2002 may be configured to store a computer program or the like. The computer program may contain program codes or instructions for implementing the methods of embodiments of the present invention when executed by processor 2001, and may also contain program for performing other functions or providing services.

[00165] The memory 2002 may be, but is not limited to, read only memory (ROM, Read Only Memory) or other types of static storage devices that can store static information and instructions, random access memory (RAM, Random Access Memory) or dynamic other types of storage devices that can store information and instructions, electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), CD-ROM, Compact Disc Read Only Memory, or other storage media on optical discs (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk drive or other magnetic storage devices, or any other device that can be used for transferring or storing the required program codes in the form of instructions or data structures that can be accessed by a computer.

[00166] The processor 2001 is connected to the memory 2002 via the bus 2006 and performs the appropriate functions by calling application programs stored in the memory 2002. The processor 2001 may be a central processing unit (CPU, Central Processing Unit), a general purpose processor, a data signal processor ( DSP, Data Signal Processor), Application-Specific Integrated Circuit (ASIC), field programmable gate array (FPGA), or other programmable logic devices, transistorized logic devices, hardware components, or any combination of these components . These devices may implement or implement various generic logical blocks, modules, and circuits described in accordance with the disclosure of the present invention. The processor 2001 may also be a combination of components for performing computing functions, including, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[00167] The communication interface 2003 may allow the electronic device 2000 to perform wireless or wired communication with other electronic devices to exchange data. For example, the electronic device 2000 transmits and receives data (or instructions, etc.) when communicating with a direct connection from a base station via a communication interface. The communication interface 2003 may include, in whole or in part, components such as a receiver, a transmitter, a wired network interface, a wireless network interface, an antenna, and the like, without being limited to the examples given.

[00168] The electronic device 2000 can be connected to desired I/O devices such as an external storage device, charging equipment, etc. via the I/O interface 2004 in order to store the data of the electronic device 2000 on other storage devices or copy data from other storage devices to electronic device 2000. It should be appreciated that interface 2004 can be either wired or wireless.

[00169] Bus 2006 for connecting various components may contain a circuit for transferring information between the above components. Bus 2006 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, and the like. Depending on the functions performed, the 2006 bus can be divided into an address bus and a control bus.

[00170] Additionally, according to embodiments of the disclosures of the present invention, memory 2002 may store application codes for executing solutions corresponding to the disclosure of the present invention, and application codes are executed by processor 2001. Processor 2001 is configured to execute application codes stored in memory 2002 to implementation of the actions of the method or device presented in the embodiments of the disclosure of the present invention.

[00171] It should be appreciated that although the various steps of the algorithms depicted in the drawings are shown in the sequence indicated by the arrows, these steps need not be performed in that order. Unless such a limitation is explicitly stated in this disclosure of the present invention, these steps do not need to be in a strict order and may be performed in a different order. In addition, at least a portion of these steps in the algorithms depicted in the drawings may include many additional steps or steps. These additional steps or steps need not be performed at the same time, but may be performed at different time intervals. The order in which these additional steps or steps are performed need not be sequential, and they may be performed alternately, or at least a number of other additional steps or steps may be interleaved with other similar operations.

[00172] The above is only a part of the embodiments of the disclosure of the present invention. It should be noted that certain improvements and adjustments can be made by those skilled in the art without violating the principles of the disclosure of the present invention, and these improvements and adjustments should also be considered as being within the protection scope of the disclosure of the present invention.

Claims (39)

1. A method for selecting a resource when communicating with a direct connection, performed by a user equipment, including: determining at least one first time block that satisfies the detection condition from the set of time blocks for direct connection communication resources, wherein the set of time blocks comprises one or a plurality of first time blocks; determining a resource for data transmission in accordance with the resource in said at least one first time block, and characterized in that the method also includes: if the time interval between at least one first time block and the resource selection time is less than or equal to the first duration threshold, determining a discovery window, wherein a predetermined number of time blocks separate the initial time block of the discovery window from the first block of at least at least one first time block, and the predetermined number is 31. 2. The method according to p. 1, including also: if the time interval between at least one first time block and the resource selection moment is less than or equal to the first duration threshold value, determining that the detection condition includes detection of a time block located earlier than said moment by an amount not less than the second threshold value duration. 3. The method according to claim 1, characterized in that the duration of the detection window is at least the second duration threshold value. 4. The method according to p. 3, including also: determining a second duration threshold according to said time period; or determining a second duration threshold according to predetermined rules. 5. The method according to p. 1, including also: if the packet delay budget (PDB) of the data is less than or equal to the third duration threshold, determining that the detection condition includes that the minimum set of time blocks for detection before said instant is empty. 6. The method according to p. 5, including also: determining a third duration threshold according to the received first indication information and/or determining a third duration threshold according to the priority of the data. 7. The method of claim. 6, characterized in that the determination of the third threshold value of the duration in accordance with the priority of the data includes: determining a third duration threshold according to the data priority and the first relationship between the data priorities and the third duration thresholds. 8. The method according to any one of paragraphs. 1-7, including also: determining the minimum duration of detection. 9. The method according to claim 8, characterized in that the determination of the minimum duration of detection includes: determining the minimum duration according to the received second indication information and/or defining a minimum duration according to data priority. 10. The method according to claim 9, characterized in that the determination of the minimum duration in accordance with the data priority includes: determining a minimum duration according to the data priority and a second relationship between the data priorities and the minimum durations. 11. The method according to any one of paragraphs. 1-7, including also: the detection of a channel for data transmission when determining the data. 12. A device for selecting a resource when communicating with a direct connection, comprising: a resource determination module configured to determine at least one first time block that satisfies the discovery condition according to the time block set for direct connection communication resources, the time block set including one or a plurality of first time blocks; And a resource selection module, configured to determine the data transmission resource according to the resource in at least one first time block that satisfies the discovery condition, and characterized in that the resource determination module is also configured to determine a discovery window if the time interval between at least one first time block and the resource selection time is less than or equal to the first duration threshold, wherein a predetermined number of time blocks separate the initial a detection window time block from the first block of at least one first time block, wherein the predetermined number is 31. 13. The apparatus of claim 12, wherein the resource determination module is also configured to: if the time interval between the at least one first time block and the resource selection time is less than or equal to the first duration threshold, determining that the detection condition includes detection of a time block located earlier than the mentioned moment by an amount not less than the second duration threshold value. 14. The apparatus of claim 12, wherein the duration of the detection window is at least a second duration threshold. 15. The apparatus of claim 14, wherein the resource determination module is also configured to determine a second duration threshold in accordance with said time span; or to determine a second duration threshold according to predetermined rules. 16. The apparatus of claim 12, wherein the resource determination module is also configured to: if the data packet delay budget (PDB) is less than or equal to a third duration threshold, determining that the detection condition includes that the minimum set of time blocks to detect before the mentioned moment is empty. 17. The apparatus of claim 16, wherein the resource determination module is also configured to determine a third duration threshold in accordance with the received first indication information and/or determine a third duration threshold in accordance with data priority. 18. The apparatus of claim 17, wherein, in determining the third duration threshold according to the data priority, the resource determination module is configured to determine the third duration threshold according to the data priority and the first relationship between the data priorities and the third duration thresholds. 19. An electronic communication device containing a memory and a processor; wherein the memory is configured to store a computer program; And the processor is configured to perform the resource selection method according to any one of claims. 1-11 while executing a computer program. 20. A computer-readable storage medium that stores a computer program, during the execution of which the processor performs a resource selection method in accordance with any one of paragraphs. 1-11.