Method and Apparatus for Selecting Sidelink Resources

Abstract

An embodiment of the present invention provides a method and apparatus for selecting sidelink resources, the method including the steps of: determining monitoring slots for performing sidelink partial sensing for one or more candidate slots by a terminal device based on configuration information of sidelink discontinuous reception; monitoring sidelink control information in the monitoring slots; and selecting resources based on a monitoring result.

Description

Technical Field

[0001] The present invention relates to the technical field of communications.

Background Art

[0002] For some terminal devices, such as a handheld user equipment (P-UE), it is necessary to study a power saving mechanism in sidelink. In LTE V2X, a resource selection mechanism of Partial Sensing is supported. For one transmitting terminal device, power saving effect can be achieved by performing partial sensing in sidelink, that is, by monitoring in some subframes of a system frame.

[0003] Note that the introduction of the above background art is for clearly and completely explaining the technical solution of the present invention and for easy understanding by those skilled in the art. These technical solutions should not be construed as well-known to those skilled in the art because they are described in the background art of the present invention.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The inventor has discovered the following. That is, according to the work item description (WID) of Rel-17 V2X, it is necessary to study sidelink discontinuous reception (DRX). For one receiving terminal device, power saving effect can be achieved by setting or pre-setting DRX in sidelink. However, currently, when a terminal device serves as both a transmitting device and a receiving device in sidelink, that is, when partial sensing is performed and at the same time DRX is set or pre-set, how to further save power has not been considered.

[0005] In view of the above problems, embodiments of the present invention provide a method and an apparatus for selecting sidelink resources.

Means for Solving the Problems

[0006] According to one aspect of an embodiment of the present invention, a method for selecting sidelink resources is provided, which is applicable to a terminal device that supports sidelink discontinuous reception and sidelink partial sensing. The method includes: Based on the sidelink discontinuous reception configuration information, the terminal device determines a monitoring slot for performing sidelink partial sensing for one candidate slot; Performing sidelink control information monitoring in the monitoring slot; and Performing resource selection based on the monitoring result.

[0007] According to another aspect of an embodiment of the present invention, a sidelink resource selection device is provided, which is arranged in a terminal device that supports sidelink discontinuous reception and sidelink partial sensing. The device includes: A determination unit for determining a monitoring slot for performing sidelink partial sensing for one candidate slot based on the sidelink discontinuous reception configuration information; A monitoring unit for performing sidelink control information monitoring in the monitoring slot; and A selection unit for performing resource selection based on the monitoring result.

[0008] According to another aspect of an embodiment of the present invention, a method for selecting sidelink resources is provided, which is applicable to a terminal device that supports sidelink discontinuous reception and sidelink partial sensing. The method includes: Based on the sidelink discontinuous reception configuration information, the terminal device determines a monitoring slot for performing sidelink partial sensing for each candidate slot among a plurality of candidate slots; Performing sidelink control information monitoring in the monitoring slot; and Performing resource selection based on the monitoring result.

[0009] According to another aspect of the embodiment of the present invention, a sidelink resource selection device is provided, which is arranged in a terminal device that supports sidelink discontinuous reception and sidelink partial sensing. The device includes: A determination unit for determining a monitoring slot for performing sidelink partial sensing for each candidate slot among a plurality of candidate slots based on the configuration information of sidelink discontinuous reception; A monitoring unit for monitoring sidelink control information in the monitoring slot; and A selection unit for performing resource selection based on the monitoring result.

[0010] According to another aspect of the embodiment of the present invention, a communication system is provided, which Includes a terminal device, The terminal device supports sidelink discontinuous reception and sidelink partial sensing, The terminal device determines a monitoring slot for performing sidelink partial sensing for one or more candidate slots based on the configuration information of sidelink discontinuous reception; monitors sidelink control information in the monitoring slot; and performs resource selection based on the monitoring result.

Advantages of the Invention

[0011] One of the advantageous effects of the embodiment of the present invention is as follows. That is, for a terminal device that supports sidelink DRX and sidelink partial sensing, considering the case where the terminal device is both a transmitting device and a receiving device, based on the configuration information of sidelink DRX, a monitoring slot for performing sidelink partial sensing can be determined for one or more candidate slots. Thereby, the monitoring slot of partial sensing can be made to overlap as much as possible with the active time of sidelink DRX, so that power can be further saved and the power saving effect of the terminal device can be improved.

[0012] By referring to the following description and drawings, specific embodiments of the present invention are disclosed in detail, showing aspects in which the principles of the present invention can be adopted. Note that the embodiments of the present invention are not limited in scope by these. Within the scope of the appended claims, the embodiments of the present invention may include various changes, modifications, and alternatives.

[0013] Also, the features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with the features in other embodiments, or replace the features in other embodiments.

[0014] Note that terms such as "comprising / including", when used in this specification, refer to the presence of features, elements, steps, or assemblies, but also refer to not excluding the presence or addition of one or more other features, elements, steps, or assemblies.

Brief Description of the Drawings

[0015] The elements and features described in one drawing or one embodiment of the present invention can be combined with the elements and features shown in one or more other drawings or embodiments. Also, in the drawings, similar reference numerals indicate corresponding parts in several drawings and are also used to indicate corresponding parts used in multiple embodiments.

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Embodiments for Carrying Out the Invention

[0016] By referring to the accompanying drawings and the following description, the foregoing and other features of the present invention will become apparent. Although specific embodiments of the present invention are disclosed in the specification and drawings, they are only some of the embodiments that can adopt the principles of the present invention. It should be understood that the present invention is not limited to the described embodiments, that is, the present invention also includes all changes, modifications and substitutions within the scope of the appended patent claims.

[0017] In an embodiment of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any of the following communication standards, for example, LTE (Long Term Evolution), LTE-A (LTE-Advanced), WCDMA (registered trademark) (Wideband Code Division Multiple Access), HSPA (High-Speed Packet Access), and the like.

[0018] In addition, the communication between devices in a communication system may be performed according to a communication protocol at any stage. For example, it may include, but is not limited to, the following communication protocols, that is, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), etc., and / or other conventional or future-developed communication protocols.

[0019] In an embodiment of the present invention, the term "network device" refers to, for example, a device that connects a terminal device to a communication network and provides services to the terminal device in a communication system. The network device may include, but is not limited to, the following, that is, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a network gateway, a server, a radio network controller (RNC), a base station controller (BSC), etc.

[0020] Among them, the base station may include, but is not limited to, the following, that is, Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may further include a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low-power node (for example, femto, pico, etc.). In addition, the term "base station" may include some or all of their functions, and each base station can provide communication coverage for a specific geographical area. The term "cell" may refer to a base station and / or the area it covers, which depends on the context of the term.

[0021] In an embodiment of the present invention, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network by a network device and receives services from the network. The user equipment may be fixed or mobile, and is also referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and the like.

[0022] Among them, the user equipment may include, but is not limited to, for example, a cellular phone, a PDA (Personal Digital Assistant), a wireless modem, a wireless communication device, a portable device, a machine type communication device, a laptop computer, a cordless telephone, a smartphone, a smartwatch, a digital camera, and the like.

[0023] Also, for example, in a scenario such as IoT (Internet of Things), the user equipment may further be a device or apparatus that performs monitoring or measurement, and may include, but is not limited to, for example, the following, that is, a machine type communication (MTC) terminal, a vehicle-mounted communication terminal, a D2D (Device to Device) terminal, an M2M (Machine to Machine) terminal, and the like.

[0024] Also, the term "network side" or "network device side" refers to the side of the network, and may be a certain base station or core network device, and may include one or more network devices as described above. The term "user side" or "terminal side" or "terminal equipment side" refers to the side of the user or the terminal, and may be a certain UE, and may include one or more terminal devices as described above. Note that in this specification, unless otherwise specified, the "device" may refer to a network device or a terminal device.

[0025] Hereinafter, the scenarios of the embodiments of the present invention will be described through examples, but the present invention is not limited thereto.

[0026] FIG. 1 is a diagram showing a communication system in an embodiment of the present invention, and exemplarily explains a case taking a terminal device and a network device as examples. As shown in FIG. 1, the communication system 100 may include a network device 101 and terminal devices 102 and 103. For the sake of convenience, in FIG. 1, only two terminal devices and one network device are taken as examples for explanation, but the embodiments of the present invention are not limited thereto.

[0027] In an embodiment of the present invention, the network device 101 and the terminal devices 102 and 103 can transmit existing services or services that may be implemented in the future. For example, these services may include, but are not limited to, eMBB (enhanced Mobile Broadband), mMTC (massive Machine Type Communication), URLLC (Ultra-Reliable and Low-Latency Communication), etc.

[0028] Note that in FIG. 1, it is shown that both of the two terminal devices 102 and 103 are located within the coverage of the network device 101, but the present invention is not limited thereto. The two terminal devices 102 and 103 do not have to be all located within the coverage of the network device 101, or one terminal device 102 may be within the coverage of the network device 101, while the other terminal device 103 may be outside the coverage of the network device 101.

[0029] In an embodiment of the present invention, sidelink transmission can be performed between two terminal devices 102 and 103. For example, both of the two terminal devices 102 and 103 may perform sidelink transmission within the coverage of the network device 101 to realize V2X communication, or both may perform sidelink transmission outside the coverage of the network device 101 to realize V2X communication. Alternatively, one terminal device 102 may be located within the coverage of the network device 101, and the other terminal device 103 may be located outside the coverage of the network device 101, and the two may perform sidelink transmission to realize V2X communication.

[0030] In an embodiment of the present invention, the terminal device 102 and / or 103 can spontaneously select sidelink resources (i.e., adopt Mode 2). In such a case, sidelink transmission may be independent of the network device 101, that is, the network device 101 is optional. Of course, in the embodiments of the present invention, spontaneously selecting sidelink resources (i.e., adopting Mode 2) and allocating sidelink resources by the network device (i.e., adopting Mode 1) may be combined, but the embodiments of the present invention do not limit this.

[0031] In V2X, a terminal device can obtain sidelink transmission resources through a process of sensing detection + resource selection. Among them, the occupancy status of resources in the resource pool can be obtained by continuously performing sensing. For example, the terminal device can estimate the resource occupancy status within the next predetermined period (referred to as the selection window) based on the resource occupancy status within the previous predetermined period (referred to as the sensing window).

[0032] In LTE V2X, a terminal device can support a resource selection mechanism of partial sensing.

[0033] FIG. 2 is a diagram showing that the terminal device performs partial sensing. As shown in FIG. 2, in the corresponding selection window, Y subframes can be selected, and a transmission resource can be selected from the candidate resources of these Y subframes. For example, Y needs to be greater than or equal to one parameter minNumCandidateSF set by the upper layer. Correspondingly, when the k-th bit in the bitmap gapCandidateSensing set by the upper layer is set to 1, for one subframe included in the set of the selected Y subframes, it is necessary to monitor the subframe corresponding to the k-th bit in the sensing window. Briefly speaking, the subframes in the selection window corresponding to some of the subframes being monitored in the sensing window can be selected as the subframes in the set of Y subframes.

[0034] In NR V2X, the candidate slot selected in the selection window must necessarily be the slot that has been monitored at the corresponding time domain position before, so as to eliminate the interference to the selected resources caused by other terminal devices performing periodic transmission within the same resource pool, and ensure the reliable performance of the system. Such a type of partial sensing may be defined as periodic-based partial sensing. For the transmitting terminal device that performs periodic-based partial sensing, by detecting the physical sidelink control channel (PSCCH) in the monitoring slot corresponding to the selected candidate slot, that is, by detecting the corresponding first-stage sidelink control information (1st stage SCI), the resource occupancy status of other terminal devices can be obtained.

[0035] For example, if one slot t SL y is selected and is included in the candidate slots (Y slots), the terminal device needs to monitor the corresponding slot t SL y-k×Preserve . For the definitions of k and P reserve , relevant technologies can be referred to. Preserve is a set of corresponding cycle values (values after being converted into logical slots) that need to be monitored for one candidate slot when the terminal device performs periodic partial sensing, and may be the entire set or a subset of the candidate cycle set set by sl-ResourceReservePeriodList. Among them, the parameter sl-ResourceReservePeriodList included in the resource pool (resource pool) sets the candidate cycle values that are periodically reserved (reserved) and permitted by the resource pool. k is the number of cycle periods of the interval between the candidate slot and the corresponding monitoring slot that needs to be monitored. Regarding the selection of the value of k, the closer it is to the time n when resource selection occurs, or the closer it is to the first slot y0 among the Y candidate slots, the higher the reliability of the obtained sensing result.

[0036] t SL y-k×Preserve For the periodically reserved SCI monitored in (where the indicated reserve period is P reserve ), when the reference signal received power (RSRP, Reference Signal Received Power) corresponding to the SCI is greater than the threshold, the frequency resource indicated by the SCI corresponds to the resource R within the slot after k P reserve cycles, and the candidate resources that overlap (overlap) with the current transmission cycle or subsequent transmission cycle with the resource R need to be excluded within the corresponding slot t SL y inside.

[0037] Figure 3 is another figure showing that the terminal device performs partial sensing. As shown in Figure 3, assume Pr eserve ={P1, P2, P3} and k = 1. For each candidate slot, for each P reserve respectively, the terminal device can obtain the corresponding slot that needs to be monitored for the candidate slot by determining the corresponding one or more values of k.

[0038] The above has been exemplarily described for the case of partial sensing. For the process of sensing detection + resource selection in NR V2X, reference can be made to the content in Section 8.1.4 of 3GPP (Registered Trademark) TS 38.214 V16.4.0, etc.

[0039] Also, in existing standards, by setting discontinuous reception (DRX) on the Uu link for the terminal device, the terminal device can be made to save power. For example, a semi-static periodically running timer drx-OnDurationTimer can be set for the terminal device. During the period when this timer is running, the terminal device needs to perform blind detection on the physical downlink control channel (PDCCH). For the remaining time, the terminal device does not need to perform detection on the PDCCH. Furthermore, the purpose of power saving may be achieved by turning off the receiving radio frequency (RF) based on the implementation.

[0040] Based on the semi-static periodically running DRX mechanism, Uu DRX has further introduced a timer that starts running based on events, whereby when the conditions are met, the terminal device can be dynamically switched to the active time to perform blind detection on the PDCCH. For example, by setting drx-RetransmissionTimerDL and drx-RetransmissionTimerUL according to the hybrid automatic repeat request (HARQ) process, the terminal device can be dynamically switched to the "Active" time and used to detect the PDCCH for scheduling retransmissions on the downlink (DL) and uplink (UL) respectively.

[0041] Based on the above Uu DRX running mechanism, since the terminal device can switch to the "Active" state at the time when the base station may schedule retransmission, it can be ensured that the terminal device can detect and receive the PDCCH for which the base station schedules retransmission; also, in order to enable continuous data reception, after the terminal device receives the control channel information corresponding to the initial transmission (first transmission) data, it starts one drx-InactivityTimer to detect the possible subsequent initial transmission data transmission, so that it can be ensured that the terminal device can detect and receive the PDCCH corresponding to the continuous initial transmission data packets.

[0042] In the topic of the Rel-17 side link, it is necessary to further enhance the side link transmission based on the NR technology. One of the important goals is to conduct research and design on the power saving mechanism for the side link for several terminal devices, for example, the handheld UE (P-UE). For one receiving terminal device, the power saving effect can be achieved by performing discontinuous reception (DRX) on the side link. For the receiving terminal device with SL DRX configured, it detects the physical side link control channel (PSCCH), that is, detects the first stage side link control information (1st stage SCI), and detects the physical side link shared channel (PSSCH, Physical Sidelink Shared Channel), that is, detects the second stage side link control information (2nd stage SCI) only within the active time of the corresponding SL DRX to receive the data packet.

[0043] For one terminal device (for example, P-UE), it may be regarded as both a receiving UE and a transmitting UE at the same time. In Rel-17, when SL DRX is configured, the UE can perform partial sensing simultaneously. In such a case, if one situation is not fully considered during the design of the other, it may lead to a decrease in the power saving effect.

[0044] FIG. 4 is a diagram showing additional power consumption in an embodiment of the present invention. The terminal device can perform partial sensing and SL DRX is set. As shown in FIG. 4, for one period P1 set within the resource pool, for the slot t corresponding to one candidate slot, when k = 1 (that is, the sensing result of the one period with the closest distance is adopted), the corresponding monitoring slot is t SL y-k×P1 is. However, at this time, all the monitoring slots (Y monitoring slots, as shown in 401) corresponding to all the candidate slots (Y slots) do not overlap with the DRX active time. In this case, the terminal device needs to additionally generate the power consumption (as shown in 402) by monitoring the monitoring slots (as shown in 401) corresponding to the candidate slots (Y slots) based on the DRX active time. SL y-P1 In view of the above problems, the embodiments of the present invention will be further described below.

[0045] In the embodiments of the present invention, sidelink will be described by taking V2X as an example, but the present invention is not limited thereto, and it can also be applied to sidelink transmission scenarios other than V2X. In the following description, when it does not cause confusion, the terms "sidelink" and "V2X" can be exchanged, the terms "PSFCH" and "sidelink feedback channel" can be exchanged, the terms "PSCCH" and "sidelink control channel" or "sidelink control information" can be exchanged, and the terms "PSSCH" and "sidelink data channel" or "sidelink data" can also be exchanged.

[0046]

[0047] ​Also, the transmission or reception of PSCCH may be understood as transmitting or receiving sidelink control information carried by PSCCH; the transmission or reception of PSSCH may be understood as transmitting or receiving sidelink data carried by PSSCH; the transmission or reception of PSFCH may be understood as transmitting or receiving sidelink feedback information carried by PSFCH. Sidelink transmission (which may be referred to as sidelink sending) may be understood as the transmission of PSCCH / PSSCH or the transmission of sidelink data / information.

[0048] Hereinafter, various embodiments of the present invention will be described with reference to the attached drawings. It should be noted that these embodiments are merely illustrative and do not limit the present invention.

[0049] <Embodiment of the first aspect> In an embodiment of the present invention, a method for selecting sidelink resources is provided. Taking one candidate slot within a selection window as an example, an explanation will be given from a terminal device that supports sidelink DRX and sidelink partial sensing. Among them, since the terminal device can transmit sidelink data to other terminal devices, the terminal device needs to perform resource selection to determine the transmission resource of sidelink data. Also, the terminal device may be used as a receiving device.

[0050] FIG. 5 is a diagram showing a method for selecting sidelink resources according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps (operations).

[0051] 501: The terminal device determines a monitoring slot for performing sidelink partial sensing for one candidate slot based on the setting information of sidelink discontinuous reception (DRX); 502: Monitor sidelink control information in the monitoring slot; and 503: Perform resource selection based on the monitoring result.

[0052] Note that the above-mentioned FIG. 5 is for illustrative explanation of an embodiment of the present invention, but the present invention is not limited thereto. For example, the execution order between each operation can be appropriately adjusted, or several operations can be increased or decreased. A person skilled in the art is not limited to the above-mentioned FIG. 5 and can make appropriate modifications based on the above-mentioned content.

[0053] In an embodiment of the present invention, the terminal device can set or pre-set sidelink DRX. Specifically, for example, the terminal device may be in an active or on state in the sidelink, and in this state, the terminal device can perform PSCCH detection within the corresponding received resource pool; also, the terminal device may further be in an inactive or off state in the sidelink, and in this state, the terminal device does not perform PSCCH detection within the corresponding received resource pool. The embodiment of the present invention is not limited thereto, and for the DRX mechanism, further related technologies can be referred to. The terminal device can further perform partial sensing, for example, periodic-based partial sensing, but is not limited thereto.

[0054] It is necessary to detect PSCCH (1st stage SCI) and PSSCH (2nd stage SCI) within the DRX active time to perform sidelink data transmission. Also, since sidelink sensing needs to detect only PSCCH (1st stage SCI), sensing can be performed within the DRX active time.

[0055] In some embodiments, the configuration information of sidelink DRX is at least used to determine the active time of sidelink DRX; the active time of the sidelink DRX includes at least one of the following, that is, the running time of the OnDuration timer of the sidelink, the running time of the Inactivity timer, or the running time of the retransmission timer, and the present invention is not limited thereto.

[0056] In some embodiments, determining a monitoring slot corresponding to a candidate slot includes at least: determining one or more periodicities and corresponding coefficients; and for a periodicity, translating the candidate slot forward in time domain by P*k slots to be the monitoring slot corresponding to the periodicity, where P is the number of slots after the periodicity is converted to a logical slot, and k is the coefficient corresponding to the periodicity. The one or more periodicities are all or a part of sidelink reserved periodicity candidate values configured in a resource pool.

[0057] For example, for each slot t among the candidate slots (Y slots), SL y , one period value P that needs to be monitored, which is included in the sl-ResourceReservePeriod List or a subset thereof. m (The universal set is P reserve For each candidate slot t SL y For, the corresponding slot that needs to be monitored is t SL y-k×Preserve and P reserve For each period value in (corresponding to the entire set or a subset of sl-ResourceReservePeriodList) that needs to be monitored, its corresponding value of k is determined, respectively.

[0058] P in milliseconds for one period rsvp Let P′ be the logical slot unit. rsvp This can be converted into the following equation (1):

[0059]

number

[0060] In some embodiments, for one candidate slot determined to require monitoring one period of the corresponding slot, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the monitoring slot corresponding to the candidate slot is made to be the active time of the sidelink discontinuous reception. For example, the reservation period P m for the candidate slot t SL y the detection slot t corresponding to SL y-k×Pm overlaps with the active time of the SL DRX.

[0061] FIG. 6 is a diagram showing an example of determining the coefficient k in an embodiment of the present invention. P reserve An explanation will be given by taking one period P1 included in the set as an example. For example, as shown in FIG. 6, for the candidate slot t determined SL y (as shown in 601) (for example, there are a total of Y candidate slots), when k = 1, the corresponding slot is t SL y-1×P1 (as shown in 6011), which overlaps with the active time of the SL DRX, and when k = 2, the corresponding slot is t SL y-2×P1 (as shown in 6012), which does not overlap with the active time of the SL DRX, and when k = 3, the corresponding slot is t SL y-3×P1 (as shown in 6013), which does not overlap with the active time of the SL DRX. Therefore, for the candidate slot t SL y (as shown in 601), the value of k is determined to be 1, and the corresponding slot that needs to be monitored is t SL y-P1 (as shown in 6011).

[0062] In this example, for one candidate slot t SL y for the corresponding monitoring slot t SLy-1×P1 is the active time of SL DRX. Therefore, the power saving effect can be improved without increasing additional power consumption.

[0063] Also, for example, as shown in FIG. 6, for the candidate slot t SL y′ (as shown in 602), when k = 1, the corresponding slot is t SL y′-1×P1 (as shown in 6021), which does not overlap with the active time of SL DRX. When k = 2, the corresponding slot is t SL y′-2×P1 (as shown in 6022), which does not overlap with the active time of SL DRX. When k = 3, the corresponding slot is t SL y′-3×P1 (as shown in 6023), which overlaps with the active time of SL DRX. Therefore, for the candidate slot t SL y′ (as shown in 602), the value of k is determined to be 3, and the corresponding slot to be monitored is t SL y′-3×P1 (as shown in 6023).

[0064] In this example, for one candidate slot t SL y′ the corresponding monitoring slot t SL y′-3×P1 is the active time of SL DRX. Therefore, the power saving effect can be improved without increasing additional power consumption.

[0065] In some embodiments, for one candidate slot determined to require monitoring of one cycle of the corresponding slot, if none of all the corresponding coefficient candidate values can make the monitoring slot corresponding to the candidate slot be the active time of the sidelink discontinuous reception, the corresponding coefficient is determined to be a value such that the interval between the monitoring slot and the reference time is minimized and the interval is not less than a first threshold.

[0066] For example, the reference time is the trigger time for resource selection (i.e., n shown in FIG. 6), or is one of one or more candidate slots (for example, the first slot y0 among Y slots, but the present invention is not limited thereto). The first threshold value may be predefined, and for example, may be the maximum processing time or the minimum processing time or a specific processing time of the terminal device.

[0067] Still taking FIG. 6 as an example, for example, for the candidate slot t SL y′′ (as shown in 603), when k = 1, its corresponding slot is t SL y′′-1×P1 (as shown in 6031), and it does not overlap with the active time of SL DRX. When k = 2, its corresponding slot is t SL y′′-2×P1 (as shown in 6032), and it does not overlap with the active time of SL DRX. When k = 3, its corresponding slot is t SL y′′-3×P1 (as shown in 6033), and it does not overlap with the active time of SL DRX. Therefore, for this part of the candidate slot t SL y′′ (as shown in 603), the value of k is determined to be 1 (the interval between the monitoring slot t SL y′′-P1 and the reference time n or y0 is the smallest, and the interval is greater than or equal to the first threshold value), and the corresponding slot that needs to be monitored is t SL y′′-P1 (as shown in 6031).

[0068] In this example, the inactive time t SL y′′-P1 can be monitored, and by monitoring at the slot closest to the reference time, the accuracy of monitoring can be improved, so that resource selection can be performed more accurately and the reliability of resource selection can be improved.

[0069] In some embodiments, for one candidate slot determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the monitoring slot corresponding to the candidate slot becomes the active time of the sidelink discontinuous reception, and the interval between the monitoring slot and the reference time is minimized and the interval becomes equal to or greater than a first threshold value.

[0070] FIG. 7 is a diagram showing another example of determining a coefficient in an embodiment of the present invention. P reserve An explanation will be given by taking one period P1 included in the set as an example. For example, as shown in FIG. 7, for the candidate slot t SL y (as shown in 701), when k = 1, its corresponding slot is t SL y - 1 × P1 (as shown in 7011), which overlaps with the active time of SL DRX. When k = 2, its corresponding slot is t SL y-2×P1 (as shown in 7012), which does not overlap with the active time of SL DRX. When k = 3, its corresponding slot is t SL y-3×P1 (as shown in 7013), which overlaps with the active time of SL DRX. Therefore, for the candidate slot t SL y (as shown in 701), the value of k is determined to be 1 (the interval between the monitoring slot t SL y-P1 and the reference time n or y0 is the smallest, and the interval is equal to or greater than the first threshold value), and the corresponding slot that needs to be monitored is t SL y-P1 (as shown in 7011).

[0071] In this example, for one candidate slot t SL y , the corresponding monitoring slot t SL y-1×P1is the active time of SL DRX. Therefore, the power saving effect can be improved without increasing additional power consumption. Also, by performing monitoring in the slot closest to the reference time, the accuracy of monitoring can be improved, so that resource selection can be performed more accurately and the reliability of resource selection can be improved.

[0072] In some embodiments, a plurality of candidate values of the coefficient k are set or preset, or the maximum value of the plurality of candidate values of the coefficient k is set or preset.

[0073] For example, the candidate values of k may be set or preset in the resource pool, or the maximum value of k may be set or preset in the resource pool. In this case, k can only take values within the candidate value range, or can only take values within the candidate value range below the maximum value. In the examples shown in FIGS. 6 and 7, the maximum value of k is 3, and the candidate values are {1, 2, 3}.

[0074] Above, the description has been made by taking the example that k takes one value, but the present invention is not limited thereto. k can also take a plurality of values, that is, one candidate slot and the corresponding P reserve For one period in the candidate set, before triggering resource selection or before the first slot of the candidate slot set, the specific number of times of monitoring the corresponding slot needs to be greater than 1, and the number can be predefined or set or preset in the resource pool. For example, P reserve For one period included in the set, when k takes two values, first, one value of k is determined based on the above-mentioned embodiment, and then, by repeating the above steps, another different value of k is determined.

[0075] For example, in FIG. 6, P reserve For one period P1 included in the set, first, it is determined that the corresponding monitoring slot is t SL y-P1 (as shown in 6011, and at this time, k = 1), and then, the above steps can be executed again, and the slot tSL y-2×P1 (as shown in 6012) and slot t SL y-3×P1 (as shown in 6013), neither overlaps with the active time of SL DRX, so the corresponding monitoring slot is closer to the reference time t SL y-2×P1 (as shown in 6012, and at this time, k = 2). It can be determined that in such a case, k = [1, 2].

[0076] Also, for example, in FIG. 7, first, the corresponding slot t that needs to be monitored SL y-P1 (as shown in 7011, and at this time, k = 1) is determined. Next, the above steps can be executed again, and the slot t SL y-3×P1 (as shown in 7013) overlaps with the active time of SL DRX, so the corresponding monitoring slot is t SL y-3×P1 (as shown in 7013, and at this time, k = 3). It can be determined that in such a case, k = [1, 3].

[0077] In an embodiment of the present invention, after determining the corresponding value of k for each period included in P reserve For one candidate slot t SL y Regarding the corresponding slot t SL y-k×Preserve It is necessary to be monitored, and for the periodically reserved SCI monitored in slot t SL y-k×Preserve (among them, the indicated reservation period is P reserve ), if the RSRP intensity of the DMRS of the PSCCH or PSSCH corresponding to the SCI is greater than the threshold, the frequency resource indicated by the SCI corresponds to the resource R in the slot after k P reserve periods, and the candidate resources that overlap with the current transmission period or subsequent transmission period for the resource R are the corresponding slot t SL yneeds to be excluded within.

[0078] In the above example, the terminal device can obtain the sensing result by performing monitoring during the inactive time (Non-active-time) of SL DRX. The terminal device can ensure that it can monitor all the slots that need to be monitored corresponding to the candidate slots. However, the present invention is not limited to this.

[0079] In some embodiments, for one cycle value P that needs to be monitored corresponding to one candidate slot m (the entire set is P reserve is), when all possible values of k cannot overlap with the active time of SL DRX for which the corresponding monitoring slot is set, for this candidate slot, regarding this cycle, it is not necessary to perform the monitoring of the corresponding slot before that.

[0080] For example, for the candidate slot t in FIG. 6 SL y′′ (as shown in 603), when k = 1, the corresponding slot t SL y′′-P1 (as shown in 6031) does not overlap with the active time of SL DRX, and when k = 2, the corresponding slot t SL y′′-2×P1 (as shown in 6032) and when k = 3, the corresponding slot t SL y′′-3×P1 (as shown in 6033) also do not overlap with the active time of SL DRX. Therefore, the slot t SL y′′-P1 (as shown in 6031) is not monitored, that is, the monitoring is not performed in this cycle corresponding to this candidate slot. Compared with the embodiment of FIG. 6, in this embodiment, the corresponding power consumption (as shown in 604) is omitted.

[0081] Each of the above embodiments is for illustrative purposes of the embodiments of the present invention, but the present invention is not limited thereto, and appropriate modifications can be further made based on each of the above embodiments. For example, each of the above embodiments can be used alone, or a plurality of the above embodiments can be combined and used.

[0082] As can be seen from the above embodiments, for a terminal device that supports sidelink DRX and sidelink partial sensing, based on the sidelink DRX configuration information, for one candidate slot, a monitoring slot for performing sidelink partial sensing can be determined. Thereby, considering the case where the terminal device is both a transmitting device and a receiving device, power can be further saved, and the power saving effect of the terminal device can be improved.

[0083] <Embodiment of the second aspect> In an embodiment of the present invention, a method for selecting sidelink resources is provided. Taking a plurality of candidate slots within a selection window as an example, an explanation is given from a terminal device that supports sidelink DRX and sidelink partial sensing. Among them, since the terminal device can transmit sidelink data to other terminal devices, the terminal device needs to perform resource selection to determine the transmission resource of the sidelink data. Also, the terminal device may be a receiving device.

[0084] FIG. 8 is a diagram showing a method for selecting sidelink resources in an embodiment of the present invention. As shown in FIG. 8, the method includes the following steps.

[0085] 801: The terminal device determines a monitoring slot for performing sidelink partial sensing for each candidate slot among a plurality of candidate slots based on the sidelink discontinuous reception (DRX) configuration information; 802: Monitor sidelink control information in the monitoring slot; and 803: Perform resource selection based on the monitoring result.

[0086] Note that the above Figure 8 is for illustrative explanation of the embodiments of the present invention, but the present invention is not limited thereto. For example, the execution order between each operation can be appropriately adjusted, or several operations can be increased or decreased. A person skilled in the art can make appropriate modifications based on the above content without being limited to the above Figure 8.

[0087] In an embodiment of the present invention, the terminal device can set or pre-set sidelink DRX. Specifically, for example, the terminal device may be in an active or on state in the sidelink, and in this state, the terminal device can perform PSCCH detection within the corresponding receiving resource pool; also, the terminal device may further be in an inactive or off state in the sidelink, and in this state, the terminal device does not perform PSCCH detection within the corresponding receiving resource pool. The embodiments of the present invention are not limited thereto, and for the DRX mechanism, further related technologies can be referred to. The terminal device may further perform partial sensing, for example, periodic-based partial sensing, but is not limited thereto.

[0088] In some embodiments, the configuration information of sidelink DRX is at least used to determine the active time of sidelink DRX, and the active time of the sidelink DRX includes at least one of the following, that is, the running time of the OnDuration timer of the sidelink, the running time of the Inactivity timer, or the running time of the retransmission timer, but the present invention is not limited thereto.

[0089] In some embodiments, determining the monitoring slots corresponding to each candidate slot among a plurality of candidate slots includes determining one or more periods and corresponding coefficients of a candidate slot set formed by the plurality of candidate slots, wherein the coefficients for one period of the plurality of candidate slots are the same; and for one period, taking the candidate slot set after translating the candidate slot set forward by P*k slots in the time domain as the monitoring slot set corresponding to the period, where P is the number of slots after the period is converted into logical slots, and k is the coefficient corresponding to the period. The one or more periods are all or some of the sidelink reserve period candidate values set in the resource pool.

[0090] For example, for each slot t among the candidate slots (Y slots), SL y one period value P to be monitored, included in the sl-ResourceReservePeriod List or a subset thereof m (the whole set is P reserve ), the value of its "k" may be the same. For one candidate slot t SL y the corresponding slot that needs to be monitored is t SL y-k×Preserve ; also, for each period value to be monitored in P reserve (corresponding to the whole set or a subset of the sl-ResourceReservePeriodList), the corresponding "k" value is determined respectively, and is the same for each slot t SL y .

[0091] For one period, P in milliseconds rsvp can be converted to P' in logical slots rsvp as shown in the following formula (1).

[0092]

Equation

[0093] In some embodiments, for a set of candidate slots determined to require monitoring of one period of the corresponding slot, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots is made to at least partially overlap with the active time of the sidelink discontinuous reception.

[0094] FIG. 9 is a diagram showing an example of determining a coefficient in an embodiment of the present invention. P reserve An explanation will be given by taking one period P1 included in the set as an example. For example, as shown in FIG. 9, for one candidate slot t included in the set of candidate slots (which is Y candidate slots and is as shown in 901), when k = 1, the monitoring slot corresponding to the candidate slot t SL y is t SL y , which is included in the set of monitoring slots corresponding to the set of candidate slots, and the set of monitoring slots corresponding to the set of candidate slots (which is as shown in 9011) partially overlaps with the active time of SL DRX; when k = 2, the monitoring slot corresponding to the candidate slot t SL y-1×P1 is t SL y , which is included in the set of monitoring slots corresponding to the set of candidate slots, and the set of monitoring slots corresponding to the set of candidate slots (which is as shown in 9012) does not overlap with the active time of SL DRX; when k = 3, the monitoring slot corresponding to the candidate slot t SL y-2×P1 y is t SL y and the monitoring slot corresponding to it is t SL y-3×P1and it is included in the set of monitoring slots corresponding to the candidate slot set, and the set of slots corresponding to the candidate slot set (as shown in 9013) does not overlap with the active time of SL DRX. Therefore, for the candidate slot set including candidate slot t SL y for the candidate slot set including (as shown in 901), the value of k is determined to be 1, and the corresponding set of slots to be monitored is as shown in 9011.

[0095] In this example, since monitoring can be performed during at least part of the active time, a large amount of additional power consumption can be increased without increasing, and the power saving effect can be improved.

[0096] In some embodiments, for the candidate slot set determined to need to monitor one period of the corresponding slot, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the number of slots overlapping with the active time of the sidelink discontinuous reception in the set of monitoring slots corresponding to the candidate slot set is made larger than the second threshold.

[0097] Also, for example, assuming that the second threshold is 2, the set of slots shown in 9011 partially overlaps with the active time of SL DRX (for example, one slot overlaps), and the set of slots shown in 9013 partially overlaps with the active time of SL DRX (for example, three slots overlap), and since only the set of slots shown in 9013 satisfies the slot overlap condition (larger than the second threshold), the value of k is determined to be 3.

[0098] In some embodiments, for the candidate slot set determined to need to monitor one period of the corresponding slot, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the candidate slot set at least partially overlaps with the active time of the sidelink discontinuous reception, and the number of overlapping slots is made the largest.

[0099] Figure 10 is a diagram showing another example for determining a coefficient in an embodiment of the present invention. P reserve An explanation will be given using one period P1 included in the set as an example. For example, as shown in Figure 10, one candidate slot t included in the candidate slot set (which is Y candidate slots and is as shown in 1001) SL y For k = 1, for the candidate slot t SL y The corresponding monitoring slot is t SL y-1×P1 which is included in the monitoring slot set corresponding to the candidate slot set, and the slot set corresponding to the candidate slot set (which is as shown in 10011) partially overlaps with the active time of SL DRX (for example, two slots overlap); for k = 2, for the candidate slot t SL y The corresponding monitoring slot is t SL y-2×P1 which is included in the monitoring slot set corresponding to the candidate slot set, and the slot set corresponding to the candidate slot set (which is as shown in 10012) does not overlap with the active time of SL DRX; for k = 3, for the candidate slot t SL y The corresponding monitoring slot is t SL y-3×P1 which is included in the monitoring slot set corresponding to the candidate slot set, and the slot set corresponding to the candidate slot set (which is as shown in 10013) partially overlaps with the active time of SL DRX (for example, four slots overlap). Therefore, for the candidate slot set (which is as shown in 1001) including the candidate slot t SL y the value of k is determined to be 3, and the corresponding slot set that needs to be monitored is as shown in 10013.

[0100] In this example, since monitoring can be performed as much as possible during the active time of DRX, a large amount of additional power consumption is not increased, and the power saving effect can be improved.

[0101] In some embodiments, for a set of candidate slots determined to require monitoring one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the number of slots overlapping with the active time of the sidelink discontinuous reception in the set of monitoring slots corresponding to the set of candidate slots is greater than a second threshold, and the number of overlapping slots is made the largest.

[0102] Also, for example, if the second threshold is 2, the set of slots shown in 10011 partially overlaps with the active time of SL DRX (for example, 1 slot overlaps), the set of slots shown in 10012 partially overlaps with the active time of SL DRX (for example, 3 slots overlap), and the set of slots shown in 10013 partially overlaps with the active time of SL DRX (for example, 4 slots overlap), and since both the set of slots shown in 10012 and the set of slots shown in 10013 satisfy the slot overlap condition (greater than the second threshold), a selection is made from the set of slots shown in 11012 and the set of slots shown in 11013, and the set of slots with the largest number of overlapping slots is selected, that is, the value of k is determined to be 3.

[0103] In some embodiments, for a set of candidate slots determined to require monitoring one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and the interval between the last slot in the set of monitoring slots and the reference time is minimized and the interval is equal to or greater than a first threshold.

[0104] FIG. 11 is a diagram showing another example of determining a coefficient in an embodiment of the present invention. P reserveAn explanation will be given by taking one period P1 included in the set as an example, and among them, the second threshold value is not set. For example, as shown in FIG. 11, one candidate slot t included in the candidate slot set (which is Y candidate slots and is as shown in 1101) SL y For k = 1, for the candidate slot t SL y the monitoring slot corresponding to it is t SL y-1×P1 which is included in the monitoring slot set corresponding to the candidate slot set, and the slot set corresponding to the candidate slot set (as shown in 11011) partially overlaps with the active time of SL DRX (for example, two slots overlap); for k = 2, the monitoring slot corresponding to the candidate slot tSLy is t SL y-2×P1 which is included in the monitoring slot set corresponding to the candidate slot set, and the slot set corresponding to the candidate slot set (as shown in 11012) does not overlap with the active time of SL DRX; for k = 3, the monitoring slot corresponding to the candidate slot t SL y is t SL y-3×P1 which is included in the monitoring slot set corresponding to the candidate slot set, and the slot set corresponding to the candidate slot set (as shown in 11013) partially overlaps with the active time of SL DRX (for example, two slots overlap). Therefore, for the candidate slot set (as shown in 1101) including the candidate slot t SL y the value of k is determined to be 1 (the interval between the monitoring slot t SL y-P1 and the reference time n or y0 is the smallest, and the interval is greater than or equal to the first threshold value), and the corresponding slot set that needs to be monitored is as shown in 11011.

[0105] In this example, by making the slots that need to be monitored at least partially overlap with the active time of SL DRX and increasing the number of overlapping slots as much as possible, it is possible to improve the power efficiency without increasing a large amount of additional power consumption. Also, by performing monitoring on the slot closest to the reference time, the accuracy of monitoring can be improved, so that resource selection can be performed more accurately and the reliability of resource selection can be improved.

[0106] In some embodiments, for a set of candidate slots determined to need to monitor one cycle of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the number of slots overlapping with the active time of the sidelink discontinuous reception in the set of monitoring slots corresponding to the set of candidate slots is greater than a second threshold, and the interval between the last slot in the set of monitoring slots and the reference time is minimized and the interval is made not less than a first threshold.

[0107] Also, for example, if the second threshold is 2, the set of slots shown as 11011 partially overlaps with the active time of SL DRX (for example, 1 slot overlaps), the set of slots shown as 11012 partially overlaps with the active time of SL DRX (for example, 3 slots overlap), and the set of slots shown as 11013 partially overlaps with the active time of SL DRX (for example, 4 slots overlap), and since both the set of slots shown as 11012 and the set of slots shown as 11013 satisfy the slot overlap condition (greater than the second threshold), a selection is made from the set of slots shown as 11012 and the set of slots shown as 11013, and the set of slots closest to n or y0 is selected, that is, the value of k is determined to be 2.

[0108] In some embodiments, for a set of candidate slots determined to require monitoring for one period of corresponding slots, if none of all corresponding coefficient candidate values can be made such that at least one slot within the set of monitoring slots corresponding to the set of candidate slots overlaps with the active time of the sidelink discontinuous reception, or the number of overlapping slots is greater than a second threshold, the corresponding coefficient is determined to have a value such that the interval between the last slot within the set of monitoring slots and the reference time is minimized and the interval is greater than or equal to a first threshold.

[0109] For example, the reference time is a trigger time for resource selection (e.g., n), or is one slot among one or more candidate slots (e.g., it may be the first slot y0 among Y slots, but the present invention is not limited thereto). The first threshold may be predefined, for example, it may be the minimum processing time of the terminal device.

[0110] FIG. 12 is a diagram showing another example of determining a coefficient in an embodiment of the present invention. P reserve An explanation will be given by taking one period P1 included in the set as an example, and the second threshold is not set. For example, as shown in FIG. 12, for the set of candidate slots 1201 (Y candidate slots) to be determined, when k = 1, the corresponding slot set (as shown in 12011) does not overlap with the active time of SL DRX, when k = 2, the corresponding slot set (as shown in 12012) does not overlap with the active time of SL DRX, and when k = 3, the corresponding slot set (as shown in 12013) does not overlap with the active time of SL DRX. Therefore, for the slot set (as shown in 1201) of this part of the candidate slots t SL y the value of k is determined to be 1 (the interval between the monitoring slot t SL y-P1 and the reference time n or y0 is minimized and the interval is greater than or equal to the first threshold), and the corresponding slot set that needs to be monitored is as shown in 12011.

[0111] In this example, monitoring can be performed during the inactive time, and by performing monitoring in the slot closest to the reference time, the accuracy of monitoring can be improved. Therefore, a transmission resource with less interference can be selected, and the reliability of sidelink transmission can be improved.

[0112] In some embodiments, a second threshold may be further set. Here, still taking FIG. 11 as an example, the description will be given. For example, the second threshold is 3, the set of slots shown in 11011 partially overlaps with the active time of SL DRX (for example, two slots overlap), and the set of slots shown in 11013 partially overlaps with the active time of SL DRX (for example, two slots overlap). Assuming that there is no set of slots where the number of overlapping slots is greater than 3, the value of k is determined to be 1.

[0113] In some embodiments, a plurality of candidate values of the coefficient are set or preset, or the maximum value of the plurality of candidate values of the coefficient is set or preset.

[0114] For example, the candidate value of k may be set or preset in the resource pool, or the maximum value of k may be set or preset in the resource pool. In this case, k can only take a value within the candidate value range, or can only take a value within the candidate value range not exceeding the maximum value. In the examples shown in FIGS. 9 to 12, the maximum value of k is 3, and the candidate values are {1, 2, 3}.

[0115] The above description has been given by taking the case where k takes one value as an example, but the present invention is not limited thereto. k may further take a plurality of values, that is, one candidate slot and the corresponding P reserve For one period in the candidate set, the specific number of times of monitoring before triggering resource selection needs to be greater than 1, and this number can be predefined or set or preset in the resource pool. For example, P reserveFor one period included in the set, when k takes two values, first, determine one value of k based on the above-described embodiments, and then, by executing the above steps, determine another different value of k.

[0116] For example, in FIG. 10, P reserve For one period P1 included in the set, first, determine the corresponding set of monitoring slots, as shown in 10013. At this time, k = 3. Next, the above steps can be executed again. Since the set of slots (as shown in 10011) partially overlaps with the active time of SL DRX, the corresponding set of monitoring slots can be determined, as shown in 10011. At this time, k = 1. In such a case, k = [1, 3].

[0117] Also, for example, in FIG. 9, P reserve For one period P1 included in the set, first, determine the corresponding set of monitoring slots, as shown in 9011. At this time, k = 1. Next, the above steps can be executed again. Since neither the set of slots (as shown in 9012) nor the set of slots (as shown in 9013) overlaps with the active time of SL DRX, it is determined that the corresponding monitoring slot is the set of slots closer to the reference time (as shown in 9012. At this time, k = 2). In such a case, k = [1, 2].

[0118] In an embodiment of the present invention, after determining the corresponding value of k for each period included in P reserve for one candidate slot t SL y for k periods of P reserve the corresponding slot t within the sensing window before the SL y-k×Preserve needs to be monitored, and the periodically reserved SCI monitored at slot t SL y-k×Preserve among which the indicated reservation period is P reserveFor the case where the corresponding RSRP is greater than the threshold, when the frequency resource indicated by the SCI is k P reserve corresponds to resource R within the slot after k periods, and candidate resources that overlap with the resource R in the current transmission period or subsequent transmission periods need to be excluded within the corresponding slot t SL y within.

[0119] In the above example, the terminal device can perform monitoring to obtain sensing results during the non-active time of SL DRX. The terminal device can ensure that it can monitor all the slots that need to be monitored corresponding to the candidate slots. However, the present invention is not limited to this.

[0120] In some embodiments, for one cycle value P that needs to be monitored corresponding to one candidate slot m (the whole set is P reserve ), if all possible values of k cannot overlap with the active time of the SL DRX in which the candidate slot is set, then for the candidate slot and this cycle, it is not necessary to perform monitoring before that.

[0121] The above embodiments are for exemplarily explaining the embodiments of the present invention, but the present invention is not limited thereto, and appropriate modifications can be further made based on the above embodiments. For example, each of the above embodiments can be used alone, or a plurality of the above embodiments can be combined and used.

[0122] As can be seen from the above embodiments, for a terminal device that supports sidelink DRX and sidelink partial sensing, based on the sidelink DRX configuration information, monitoring slots for performing sidelink partial sensing for a plurality of candidate slots can be determined. Thereby, considering the case where the terminal device is both a transmitting device and a receiving device, power can be further saved, and the power saving effect of the terminal device can be improved.

[0123] <Embodiment of the third side> In an embodiment of the present invention, a sidelink resource selection apparatus is provided. The apparatus may be, for example, a terminal device that supports sidelink discontinuous reception and sidelink partial sensing, or may be one or more assemblies arranged in the terminal device. Here, the description of the same content as in the embodiments of the first and second sides is omitted.

[0124] FIG. 13 is a diagram showing a sidelink resource selection apparatus according to an embodiment of the present invention. As shown in FIG. 13, the sidelink resource selection apparatus 1300 includes a determination unit 1301, a monitoring unit 1302, and a selection unit 1303.

[0125] In some embodiments, the determination unit 1301 determines a monitoring slot for performing sidelink partial sensing for one candidate slot based on the sidelink discontinuous reception setting information; the monitoring unit 1302 monitors sidelink control information in the monitoring slot; and the selection unit 1303 performs resource selection based on the monitoring result.

[0126] In some embodiments, the sidelink discontinuous reception setting information is at least used to confirm the active time of the sidelink discontinuous reception. The active time of the sidelink discontinuous reception includes at least one of the following, that is, the running time of the sidelink OnDuration timer, the running time of the inactive timer, or the running time of the retransmission timer.

[0127] In some embodiments, the determination unit 1301 determines one or more periods and corresponding coefficients; and for one period, the candidate slot is used as the monitoring slot corresponding to the period after being translated forward by P*k slots in the time domain. P is the number of slots after the period is converted into logical slots, and k is the coefficient corresponding to the period.

[0128] In some embodiments, the one or more periods are all or some of the values of the sidelink reservation period candidate values set in the resource pool.

[0129] In some embodiments, for a candidate slot determined to require monitoring of one period of a corresponding slot, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, to make the monitoring slot corresponding to the candidate slot be the active time of the sidelink discontinuous reception.

[0130] In some embodiments, for a candidate slot determined to require monitoring of one period of a corresponding slot, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, to make the monitoring slot corresponding to the candidate slot be the active time of the sidelink discontinuous reception, and to make the interval between the monitoring slot and the reference time be minimized and the interval be greater than or equal to a first threshold.

[0131] In some embodiments, for a candidate slot determined to require monitoring of one period of a corresponding slot, when none of all the corresponding coefficient candidate values can make the monitoring slot corresponding to the candidate slot be the active time of the sidelink discontinuous reception, the corresponding coefficient is determined to be the following value, that is, to make the interval between the monitoring slot and the reference time be minimized and the interval be greater than or equal to a first threshold.

[0132] In some embodiments, the plurality of candidate values of the coefficient are set or pre-set, or the maximum value of the plurality of candidate values of the coefficient is set or pre-set.

[0133] In some embodiments, the reference time is the trigger time of resource selection, or is one of one or more candidate slots.

[0134] In some embodiments, the determination unit 1301 determines, for each candidate slot among a plurality of candidate slots, a monitoring slot for performing sidelink partial sensing based on the sidelink discontinuous reception configuration information; the monitoring unit 1302 monitors sidelink control information in the monitoring slot; and the selection unit 1303 performs resource selection based on the monitoring result.

[0135] In some embodiments, the sidelink discontinuous reception configuration information is at least used to determine the active time of the sidelink discontinuous reception, and the active time of the sidelink discontinuous reception includes at least one of the following, that is, the running time of the sidelink OnDuration timer, the running time of the inactive timer, or the running time of the retransmission timer.

[0136] In some embodiments, the determination unit 1301 is used to determine one or more periods and corresponding coefficients of a candidate slot set formed by the plurality of candidate slots, wherein the coefficients for one period of the plurality of candidate slots are the same; and for one period, the candidate slot set after translating the candidate slot set forward by P*k slots in the time domain is used as the monitoring slot set corresponding to the period, where P is the number of slots after the period is converted into logical slots, and k is the coefficient corresponding to the period.

[0137] In some embodiments, the one or more periods are all or part of the sidelink reservation period candidate values set in the resource pool.

[0138] In some embodiments, for a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be a value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and / or the number of overlapping slots is made greater than a second threshold value.

[0139] In some embodiments, for a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be a value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and / or the number of overlapping slots becomes greater than a second threshold value, and the number of overlapping slots is made maximum.

[0140] In some embodiments, for a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be a value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and / or the number of overlapping slots becomes greater than a second threshold value, and the interval between the last slot in the set of monitoring slots and the reference time is made minimum and the interval is made greater than or equal to a first threshold value.

[0141] In some embodiments, for a set of candidate slots determined to require monitoring for one period of corresponding slots, if none of all corresponding coefficient candidate values can be made such that at least one slot in the set of monitoring slots corresponding to the set of candidate slots overlaps with the active time of the sidelink discontinuous reception, or the number of overlapping slots is greater than a second threshold, the corresponding coefficient is determined to have a value such that the interval between the last slot in the set of monitoring slots and the reference time is minimized and the interval is greater than or equal to a first threshold.

[0142] In some embodiments, a plurality of candidate values of the coefficient are set or preset, or the maximum value of the plurality of candidate values of the coefficient is set or preset.

[0143] Each of the above embodiments is for illustratively explaining the embodiments of the present invention, but the present invention is not limited thereto, and appropriate modifications can be further made based on each of the above embodiments. For example, each of the above embodiments can be used alone, or a plurality of the above embodiments can be combined and used.

[0144] It should be noted that although the components or modules according to the present invention have been described above, the present invention is not limited thereto. The sidelink resource selection device 1300 may further include other components or modules, and for the specific content of these components or modules, reference can be made to related technologies.

[0145] Also, for the sake of convenience, only the connection relationship or signal direction between each component or module is shown in FIG. 13. However, as can be understood by those skilled in the art, various related technologies such as bus connection can also be adopted. Each of the above components or modules may be implemented by hardware such as a processor, a memory, a transmitter, a receiver, etc., but the implementation of the present invention is not limited thereto.

[0146] As can be seen from the above embodiments, for a terminal device that supports sidelink DRX and sidelink partial sensing, based on the sidelink DRX configuration information, a monitoring slot for performing sidelink partial sensing can be determined for a plurality of candidate slots. Thereby, considering the case where the terminal device is both a transmitting device and a receiving device, power can be further saved, and the power saving effect of the terminal device can be improved.

[0147] <Embodiment of the fourth aspect> In an embodiment of the present invention, a communication system is further provided. For this, reference can be made to FIG. 1, where the description of the same content as in the embodiments of the first to third aspects is omitted.

[0148] In some embodiments, the communication system 100 may include at least the following.

[0149] Terminal device: Supports sidelink discontinuous reception and sidelink partial sensing. The terminal device determines a monitoring slot for performing sidelink partial sensing for one or more candidate slots based on the sidelink discontinuous reception configuration information; monitors sidelink control information in the monitoring slot; and performs resource selection based on the monitoring result.

[0150] In an embodiment of the present invention, a network device is further provided. It may be, for example, a base station, but the present invention is not limited thereto, and it may also be other network devices.

[0151] FIG. 14 is a configuration diagram of a network device in an embodiment of the present invention. As shown in FIG. 14, the network device 1400 may include a processor 1410 (for example, a central processing unit CPU) and a memory 1420, and the memory 1120 is connected to the processor 1410. Among them, the memory 1420 can store various data, and can further store a program 1430 for information processing, and can execute the program 1430 under the control of the processor 1410.

[0152] Also, as shown in FIG. 14, the network device 1400 may further include a transceiver 1440, an antenna 1450, etc. Among them, since the functions of these components are the same as those of the prior art, the detailed description thereof is omitted here. Note that the network device 1400 does not necessarily include all the components shown in FIG. 14. Also, the network device 1400 may further include components not shown in FIG. 14, and for this, reference can be made to the prior art.

[0153] In an embodiment of the present invention, a terminal device is further provided. The present invention is not limited thereto, and other devices may also be used.

[0154] FIG. 15 is a diagram showing a terminal device in an embodiment of the present invention. As shown in FIG. 15, the terminal device 1500 may include a processor 1510 and a memory 1520. The memory 1520 stores data and programs and is connected to the processor 1510. Note that this figure is only an example, and furthermore, electrical communication functions or other functions may be realized by supplementing or replacing this configuration with other types of configurations.

[0155] For example, the processor 1510 may be configured to execute a program to implement the sidelink resource selection method described in the embodiment of the first aspect. For example, the processor 1510 may be configured to perform the following control, that is, based on the sidelink discontinuous reception setting information, for one candidate slot, determine a monitoring slot for performing sidelink partial sensing; monitor sidelink control information in the monitoring slot; and perform resource selection based on the monitoring result.

[0156] Also, for example, the processor 1510 may be configured to execute a program to implement the method for selecting sidelink resources described in the embodiments of the second aspect. For example, the processor 1510 may be configured to perform the following control, that is, based on the configuration information of sidelink discontinuous reception, for each candidate slot among a plurality of candidate slots, determine a monitoring slot for performing sidelink partial sensing; monitor sidelink control information in the monitoring slot; and perform resource selection based on the monitoring result.

[0157] As shown in FIG. 15, the terminal device 1500 may further include a communication module 1530, an input unit 1540, a display 1550, a power supply 1560, etc. Among them, since the functions of these components are the same as those in the prior art, the detailed description thereof is omitted here. It should be noted that the terminal device 1500 does not necessarily include all the components shown in FIG. 15. In addition, the terminal device 1500 may further include components not shown in FIG. 15, and for this, reference can be made to the prior art.

[0158] In an embodiment of the present invention, a computer program is further provided. When the program is executed on the terminal device, the program causes the terminal device to execute the method for selecting sidelink resources described in the embodiments of the first and second aspects.

[0159] In an embodiment of the present invention, a storage medium storing a computer program is further provided. The computer program causes the terminal device to execute the method for selecting sidelink resources described in the embodiments of the first and second aspects.

[0160] In addition, the above-described apparatus and method may be implemented by software or hardware, or may be implemented by a combination of hardware and software. The present invention further relates to a computer-readable program as follows, that is, when the program is executed by a logic component, the logic component realizes the above-described apparatus or component, or realizes the various methods or steps described above for the logic component. The logic component may be, for example, an FPGA (Field Programmable Gate Array), a microprocessor, a processor used in a computer, etc. The present invention further relates to a storage medium storing the above-described program, for example, a hard disk, a magnetic disk, an optical hard disk, a DVD, a flash memory, etc.

[0161] Furthermore, one or more combinations of the functional blocks described in the drawings and / or one or more combinations of the functional blocks may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic components, discrete gates or transistor logic components, discrete hardware assemblies or any other suitable combination for performing the functions described herein. Also, one or more combinations of the functional blocks described in the drawings and / or one or more combinations of the functional blocks may further be configured as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors connected communicatively to the DSP or any other configuration combination.

[0162] As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to such embodiments, and any changes to the present invention belong to the technical scope of the present invention as long as the spirit of the present invention is not departed from.

[0163] In addition, with regard to the above-described embodiments, etc., the following supplementary notes are further disclosed.

[0164] (Appendix 1) A method for selecting sidelink resources, applied to a terminal device that supports sidelink discontinuous reception (DRX) and sidelink partial sensing. The method includes: Based on the configuration information of sidelink discontinuous reception (DRX), the terminal device determines a monitoring slot for performing sidelink partial sensing for one candidate slot; Monitoring sidelink control information in the monitoring slot; and Performing resource selection based on the monitoring result.

[0165] (Appendix 2) The method according to Appendix 1, wherein the configuration information of the sidelink discontinuous reception is at least used to determine the active time of the sidelink discontinuous reception, the active time of the sidelink discontinuous reception includes at least one of the following, namely, the running time of the OnDuration timer of the sidelink, the running time of the Inactive timer, or the running time of the Retransmission timer.

[0166] (Appendix 3) The method according to Appendix 1 or 2, wherein determining the monitoring slot corresponding to one candidate slot includes at least determining one or more periods and corresponding coefficients; and for one period, after translating the candidate slot forward by P*k slots in the time domain, using the result as the monitoring slot corresponding to the period, where P is the number of slots after the period is converted into logical slots, and k is the coefficient corresponding to the period.

[0167] (Appendix 4) The method according to Appendix 3, wherein The method wherein the one or more cycles are all or some of the values of the sidelink reservation period candidate values set in a resource pool.

[0168] (Appendix 5) The method according to Appendix 3, For the one candidate slot for which it is determined that one cycle of the corresponding slot needs to be monitored, the corresponding coefficient is determined to be the following value among the plurality of candidate values, that is, the monitoring slot corresponding to the candidate slot is made to be the active time of the sidelink discontinuous reception.

[0169] (Appendix 6) The method according to Appendix 3, For the one candidate slot for which it is determined that one cycle of the corresponding slot needs to be monitored, the corresponding coefficient is determined to be the following value among the plurality of candidate values, that is, the monitoring slot corresponding to the candidate slot becomes the active time of the sidelink discontinuous reception, and the interval between the monitoring slot and the reference time becomes the minimum and the interval becomes equal to or greater than a first threshold value.

[0170] (Appendix 7) The method according to Appendix 3, For the one candidate slot for which it is determined that one cycle of the corresponding slot needs to be monitored, when none of all the corresponding coefficient candidate values can make the monitoring slot corresponding to the candidate slot become the active time of the sidelink discontinuous reception, the corresponding coefficient is determined to be the following value, that is, the interval between the monitoring slot and the reference time becomes the minimum and the interval becomes equal to or greater than a first threshold value.

[0171] (Appendix 8) The method according to any one of Appendices 3 to 7, The plurality of candidate values of the coefficient are set or preset, or the maximum value of the plurality of candidate values of the coefficient is set or preset.

[0172] (Appendix 9) The method according to Appendix 6 or 7, wherein the reference time is a trigger time for resource selection or is one of one or more candidate slots.

[0173] (Appendix 10) A method for selecting sidelink resources, applicable to a terminal device supporting sidelink discontinuous reception (DRX) and sidelink partial sensing, the method comprising: determining, by the terminal device based on sidelink discontinuous reception (DRX) configuration information, a monitoring slot for performing sidelink partial sensing for each candidate slot among a plurality of candidate slots; performing monitoring of sidelink control information in the monitoring slot; and performing resource selection based on the monitoring result.

[0174] (Appendix 11) The method according to Appendix 10, wherein the sidelink discontinuous reception configuration information is at least used to determine the active time of the sidelink discontinuous reception, the active time of the sidelink discontinuous reception includes at least one of the following, namely, the running time of the sidelink OnDuration timer, the running time of the inactive timer, or the running time of the retransmission timer.

[0175] (Appendix 12) The method according to Appendix 10 or 11, wherein determining the monitoring slot corresponding to each candidate slot among a plurality of candidate slots includes at least determining one or more periods and corresponding coefficients of a candidate slot set formed by the plurality of candidate slots, wherein the coefficients for one period of the plurality of candidate slots are the same; and For one period, after translating the candidate slot set forward by P*k slots in the time domain for that period, the resulting set is the monitoring slot set corresponding to that period, where P is the number of slots after the period is converted into logical slots, and k is a coefficient corresponding to that period, the method comprising this.

[0176] (Appendix 13) The method according to Appendix 12, where the one or more periods are all or some of the values of the sidelink reservation period candidate values set in the resource pool.

[0177] (Appendix 14) The method according to Appendix 12, For a candidate slot set for which it is determined that one period of the corresponding slot needs to be monitored, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the monitoring slot set corresponding to the candidate slot set at least partially overlaps with the active time of the sidelink discontinuous reception, and / or the number of overlapping slots is made greater than a second threshold.

[0178] (Appendix 15) The method according to Appendix 12, For a candidate slot set for which it is determined that one period of the corresponding slot needs to be monitored, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the number of slots in the monitoring slot set corresponding to the candidate slot set that overlap with the active time of the sidelink discontinuous reception is made greater than a second threshold.

[0179] (Appendix 16) The method according to Appendix 12, For a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and the number of overlapping slots is made greater than a second threshold, method.

[0180] (Appendix 17) The method according to Appendix 12, For a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and the number of overlapping slots is made maximum, method.

[0181] (Appendix 18) The method according to Appendix 12, For a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the number of slots overlapping with the active time of the sidelink discontinuous reception within the set of monitoring slots corresponding to the set of candidate slots is made greater than a second threshold, and the number of overlapping slots is made maximum, method.

[0182] (Appendix 19) The method according to Appendix 12, For a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and the number of overlapping slots is made greater than a second threshold, and the number of overlapping slots is made maximum, method.

[0183] (Appendix 20) The method according to Supplementary Note 12, for a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be a value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and / or the number of overlapping slots becomes larger than a second threshold, and the interval between the last slot in the set of monitoring slots and the reference time becomes minimum, and the interval becomes equal to or greater than a first threshold.

[0184] (Supplementary Note 21) The method according to Supplementary Note 12, for a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be a value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and the interval between the last slot in the set of monitoring slots and the reference time becomes minimum, and the interval becomes equal to or greater than a first threshold.

[0185] (Supplementary Note 22) The method according to Supplementary Note 12, for a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be a value among a plurality of candidate values, that is, the number of slots overlapping with the active time of the sidelink discontinuous reception within the set of monitoring slots corresponding to the set of candidate slots becomes larger than a second threshold, and the interval between the last slot in the set of monitoring slots and the reference time becomes minimum, and the interval becomes equal to or greater than a first threshold.

[0186] (Supplementary Note 23) The method according to Supplementary Note 12, For a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and the number of overlapping slots is greater than a second threshold, and the interval between the last slot in the set of monitoring slots and the reference time is minimized, and the interval is made to be equal to or greater than a first threshold, method.

[0187] (Appendix 24) The method according to Appendix 12, For a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the set of monitoring slots corresponding to the set of candidate slots at least partially overlaps with the active time of the sidelink discontinuous reception, and the number of overlapping slots is maximized, and the interval between the last slot in the set of monitoring slots and the reference time is minimized, and the interval is made to be equal to or greater than a first threshold, method.

[0188] (Appendix 25) The method according to Appendix 12, For a set of candidate slots determined to require monitoring of one period of corresponding slots, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, among the set of monitoring slots corresponding to the set of candidate slots, the number of slots overlapping with the active time of the sidelink discontinuous reception is greater than a second threshold, and the number of overlapping slots is maximized, and the interval between the last slot in the set of monitoring slots and the reference time is minimized, and the interval is made to be equal to or greater than a first threshold, method.

[0189] (Appendix 26) The method according to Appendix 12, For a set of candidate slots determined to require monitoring one period of the corresponding slot, when none of all the corresponding coefficient candidate values can be made such that at least one slot in the set of monitoring slots corresponding to the set of candidate slots overlaps with the active time of the sidelink discontinuous reception or the number of overlapping slots is greater than a second threshold, the corresponding coefficient is determined to have the following value, that is, to minimize the interval between the last slot in the set of monitoring slots and the reference time and make the interval be equal to or greater than a first threshold, a method.

[0190] (Appendix 27) A method according to any one of paragraphs 12 to 26 of the appendix, wherein a plurality of candidate values of the coefficient are set or preset, or the maximum value of the plurality of candidate values of the coefficient is set or preset, a method.

[0191] (Appendix 28) A method according to any one of paragraphs 20 to 27 of the appendix, wherein the reference time is a trigger time for resource selection or is one of one or more candidate slots, a method.

[0192] (Appendix 29) A terminal device including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method for selecting sidelink resources according to any one of appendices 1 to 28, the terminal device.

[0193] (Appendix 30) A communication system, including a terminal device that supports sidelink discontinuous reception (DRX) and sidelink partial sensing, The terminal device determines a monitoring slot for performing sidelink partial sensing for one candidate slot based on the configuration information of sidelink discontinuous reception (DRX); monitors sidelink control information in the monitoring slot; and performs resource selection based on the monitoring result, a communication device.

[0194] (Appendix 31) A communication system, including a terminal device that supports sidelink discontinuous reception (DRX) and sidelink partial sensing, wherein the terminal device determines a monitoring slot for performing sidelink partial sensing for each candidate slot among a plurality of candidate slots based on the configuration information of sidelink discontinuous reception (DRX); monitors sidelink control information in the monitoring slot; and performs resource selection based on the monitoring result, a communication system.

Claims

1. An apparatus for selecting sidelink resources, which is arranged in a terminal device that supports sidelink discontinuous reception and sidelink partial sensing, comprising: a memory; and a processor connected to the memory, wherein the processor is configured to: determine one or more monitoring slots for performing sidelink partial sensing for one candidate slot based on the sidelink discontinuous reception configuration information; monitor sidelink control information in the one or more monitoring slots; and perform resource selection based on the monitoring result, wherein the processor determines one or more monitoring slots for performing sidelink partial sensing for one candidate slot based on the sidelink discontinuous reception configuration information, which comprises: determining one or more periods and corresponding coefficients; and for one period, setting the slot obtained by translating the candidate slot forward by P*k slots in the time domain as the monitoring slot corresponding to the period, where P is the number of slots after the period is converted into logical slots, and k is the coefficient corresponding to the period, for the period, when all candidate coefficient values corresponding thereto cannot make the monitoring slot corresponding to the candidate slot fall within the active time of the sidelink discontinuous reception, the corresponding coefficient is determined to be a value such that the interval between the monitoring slot and the reference time is minimized and the interval is greater than or equal to a first threshold, the processor is further configured to: perform periodic partial sensing during the inactive time of the sidelink discontinuous reception for a predetermined period, and configure the nearest sensing opportunity in the slots of the inactive time as one of the monitoring slots included in the one or more monitoring slots.

2. The apparatus according to claim 1, wherein the sidelink discontinuous reception configuration information is at least used to determine the active time of the sidelink discontinuous reception, wherein the active time of the sidelink discontinuous reception includes at least one of the running time of the sidelink OnDuration timer, the running time of the inactive timer, and the running time of the retransmission timer.

3. The apparatus according to claim 1, The apparatus, wherein the one or more periods are all or some of the values of the sidelink reservation period candidate values set in a resource pool. **Claim 4** The apparatus according to claim 1, wherein for the period, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the monitoring slot corresponding to the candidate slot is made to be the active time of the sidelink discontinuous reception. **Claim 5** The apparatus according to claim 1, wherein for the period, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the monitoring slot corresponding to the candidate slot is made to be the active time of the sidelink discontinuous reception, and the interval between the monitoring slot and the reference time is minimized and the interval is made to be equal to or greater than a first threshold value. **Claim 6** The apparatus according to claim 1, wherein a plurality of candidate values of the coefficient are set or preset, or a maximum value of the plurality of candidate values of the coefficient is set or preset. **Claim 7** The apparatus according to claim 1, wherein the nearest sensing opportunity is an opportunity before the reference time, and the reference time is a trigger time for resource selection, or is one of the one or more candidate slots. **Claim 8** The apparatus according to claim 1, wherein the processor is configured to perform monitoring only at the nearest sensing opportunity when performing periodic partial sensing during the inactive time of the sidelink discontinuous reception. **Claim 9** An apparatus for selecting a sidelink resource, disposed in a terminal device supporting sidelink discontinuous reception and sidelink partial sensing, including a memory; and a processor connected to the memory, wherein the processor determines, based on the sidelink discontinuous reception setting information, a monitoring slot for performing sidelink partial sensing for each candidate slot among a plurality of candidate slots; monitors sidelink control information in one or more monitoring slots; and is configured to perform resource selection based on a monitoring result, wherein the processor determines, based on the sidelink discontinuous reception setting information, a monitoring slot for performing sidelink partial sensing for each candidate slot among a plurality of candidate slots, Determine one or more periods and corresponding coefficients of a candidate slot set formed by the plurality of candidate slots, and the coefficients for one period of the plurality of candidate slots are the same; and For one period, include making the candidate slot set after translating the candidate slot set forward by P*k slots only in the time domain as the monitoring slot set corresponding to the period, P is the number of slots after the period is converted into logical slots, and k is the coefficient corresponding to the period, For the period, when all corresponding coefficient candidate values cannot make the monitoring slot corresponding to the candidate slot become the active time of the sidelink discontinuous reception, the corresponding coefficient is determined to be the following value, that is, the interval between the monitoring slot and the reference time is minimized and the interval is made to be greater than or equal to the first threshold value, The processor further,[[]] For a predetermined period, perform periodic partial sensing in the inactive time of the sidelink discontinuous reception, and configure the closest sensing opportunity in the slots of the inactive time as one of the monitoring slots included in the one or more monitoring slots, device.[[]]

10. The device according to claim 9, The sidelink discontinuous reception setting information is at least used to determine the active time of the sidelink discontinuous reception, The active time of the sidelink discontinuous reception includes at least one of the running time of the sidelink OnDuration timer, the running time of the inactive timer, and the running time of the retransmission timer, device.[[]]

11. The device according to claim 10, The one or more periods are all or some of the sidelink reservation period candidate values set in the resource pool, device.[[]]

12. The device according to claim 10, For the period, the corresponding coefficient is determined to be the following value among the plurality of candidate values, that is, the monitoring slot set corresponding to the candidate slot set is made to at least partially overlap with the active time of the sidelink discontinuous reception, device.[[]]

13. The device according to claim 10, For the period, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the number of slots overlapping with the active time of the sidelink discontinuous reception in the monitoring slot set corresponding to the candidate slot set is made larger than a second threshold value, device.

14. The device according to claim 10, For the period, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the monitoring slot set corresponding to the candidate slot set overlaps at least partially with the active time of the sidelink discontinuous reception, and / or the number of overlapping slots is made larger than a second threshold value and the number of overlapping slots is made maximum, device.

15. The device according to claim 10, For the period, the corresponding coefficient is determined to be the following value among a plurality of candidate values, that is, the monitoring slot set corresponding to the candidate slot set overlaps at least partially with the active time of the sidelink discontinuous reception, and / or the number of overlapping slots is made larger than a second threshold value, and the interval between the last slot in the monitoring slot set and the reference time is made minimum and the interval is made equal to or greater than a first threshold value, device.

16. The device according to claim 10, For the period, when none of all the coefficient candidate values corresponding thereto can make at least one slot in the monitoring slot set corresponding to the candidate slot set overlap with the active time of the sidelink discontinuous reception or the number of overlapping slots larger than a second threshold value, the corresponding coefficient is determined to be the following value, that is, the interval between the last slot in the monitoring slot set and the reference time is made minimum and the interval is made equal to or greater than a first threshold value, device.

17. A communication system, including a terminal device supporting sidelink discontinuous reception and sidelink partial sensing, wherein the terminal device determines one or more monitoring slots for performing sidelink partial sensing for one or more candidate slots based on the sidelink discontinuous reception setting information; monitors sidelink control information in the one or more monitoring slots; and is configured to perform resource selection based on the monitoring result Based on the configuration information of sidelink discontinuous reception, for one or more candidate slots, determining one or more monitoring slots for performing sidelink partial sensing by the terminal device is determining one or more periods and corresponding coefficients; and for one period, including using, as the monitoring slot corresponding to the period, the candidate slot after being translated forward by P*k slots in the time domain, where P is the number of slots after the period is converted into logical slots, and k is the coefficient corresponding to the period, for the period, when none of all the corresponding coefficient candidate values can make the monitoring slot corresponding to the candidate slot fall within the active time of the sidelink discontinuous reception, the corresponding coefficient is determined to be a value such that the interval between the monitoring slot and the reference time is minimized and the interval is not less than a first threshold, The terminal device further performs periodic partial sensing during the inactive time of the sidelink discontinuous reception for a predetermined period, and is configured such that the closest sensing opportunity in the slots of the inactive time is one of the monitoring slots included in the one or more monitoring slots, a communication system.

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