Title of Invention : REPORT OF HARQ FEEDBACK IN SIDELINK TRANSMISSION TECHNICAL FIELD [0001] Embodiments of the present disclosure generally relate to the field of telecommunication, and in particular, to methods, devices and computer storage media for reporting a hybrid automatic repeat request (HARQ) feedback in a sidelink (SL) transmission. BACKGROUND [0002] Device to device (D2D) /vehicle to everything (V2X) communications are enabled in 5G New Radio (NR) . A sidelink transmission via a physical sidelink control channel (PSCCH) and a physical sidelink share channel (PSSCH) have been studied to enable communication between terminal devices. In the latest development, a physical sidelink feedback channel (PSFCH) is defined to convey sidelink feedback control information (SFCI) for unicast and groupcast. For a HARQ-based sidelink transmission, how to report the associated HARQ feedback to a network device for further allocation of resources for retransmission is highly concerned. [0003] SUMMARY [0004] In general, embodiments of the present disclosure provide methods, devices and computer storage media for reporting a HARQ feedback in a sidelink transmission. [0005] In a first aspect, there is provided a method of communication. The method comprises: determining, at a transmitting device in a sidelink transmission scheduled by a network device, a codebook for a HARQ feedback associated with the sidelink transmission; and transmitting, from the transmitting device to the network device, the codebook for the HARQ feedback in an uplink slot. [0006] In a second aspect, there is provided a method of communication. The method comprises: receiving, at a network device and from a transmitting device in a sidelink transmission scheduled by the network device, a codebook for a HARQ feedback associated with the sidelink transmission in an uplink slot; and determining the HARQ feedback from the codebook. [0007] In a third aspect, there is provided a network device. The network device comprises a processor and a memory coupled to the processor. The memory stores instructions that when executed by the processor, cause the network device to perform the method according to the first aspect of the present disclosure. [0008] In a fourth aspect, there is provided a transmitting device in a sidelink transmission. The transmitting device comprises a processor and a memory coupled to the processor. The memory stores instructions that when executed by the processor, cause the transmitting device to perform the method according to the second aspect of the present disclosure. [0009] In a fifth aspect, there is provided a computer readable medium having instructions stored thereon. The instructions, when executed on at least one processor, cause the at least one processor to perform the method according to the first aspect of the present disclosure. [0010] In a sixth aspect, there is provided a computer readable medium having instructions stored thereon. The instructions, when executed on at least one processor, cause the at least one processor to perform the method according to the second aspect of the present disclosure. [0011] Other features of the present disclosure will become easily comprehensible through the following description. BRIEF DESCRIPTION OF THE DRAWINGS [0012] Through the more detailed description of some embodiments of the present disclosure in the accompanying drawings, the above and other objects, features and advantages of the present disclosure will become more apparent, wherein: [0013] FIG. 1 illustrates an example communication network in which some embodiments of the present disclosure can be implemented; [0014] FIG. 2 illustrates a schematic diagram illustrating a process for reporting a HARQ feedback associated with a SL transmission according to embodiments of the present disclosure; [0015] FIG. 3 illustrates an example method of communication implemented at a transmitting device in a SL transmission in accordance with some embodiments of the present disclosure; [0016] FIG. 4 illustrates an example method of determining a codebook for the HARQ feedback in accordance with some embodiments of the present disclosure; [0017] FIG. 5 illustrates another example method of communication implemented at a transmitting device in a SL transmission in accordance with some embodiments of the present disclosure; [0018] FIG. 6 illustrates a schematic diagram of determining a slot for reporting a HARQ feedback associated with a SL transmission in accordance with some embodiments of the present disclosure; [0019] FIG. 7 illustrates an example method of communication implemented at a network device in accordance with some embodiments of the present disclosure; [0020] FIG. 8 illustrates another example method of communication implemented at a network device in accordance with some embodiments of the present disclosure; and [0021] FIG. 9 is a simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure. [0022] Throughout the drawings, the same or similar reference numerals represent the same or similar element. DETAILED DESCRIPTION [0023] Principle of the present disclosure will now be described with reference to some embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitations as to the scope of the disclosure. The disclosure described herein can be implemented in various manners other than the ones described below. [0024] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs. [0025] As used herein, the term “terminal device” refers to any device having wireless or wired communication capabilities. Examples of the terminal device include, but not limited to, a user equipment (UE) , a mobile phone, a computer, a personal digital assistant, a game machine, a wearable device, an on-vehicle communication device, a machine type communication (MTC) device, a device to device (D2D) communication device, a vehicle to everything (V2X) communication device, a sensor and the like. The term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device. In addition, the term “network device” refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate. Examples of a network device include, but not limited to, a Node B (NodeB or NB) , an Evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a Transmission Reception Point (TRP) , a Remote Radio Unit (RRU) , a radio head (RH) , a remote radio head (RRH) , a low power node such as a femto node, a pico node, and the like. [0026] As used herein, the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’ The term ‘based on’ is to be read as ‘at least in part based on. ’ The term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’ The term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’ The terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below. [0027] In some examples, values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections. [0028] For a HARQ-based sidelink transmission, the reporting of a HARQ feedback associated with the sidelink transmission to a network device is not supported in existing solutions. For the purpose of requesting resources for HARQ based retransmission, it is agreed that the HARQ feedback associated with the sidelink transmission needs to be reported to the network device. Accordingly, how to report the HARQ feedback associated with the sidelink transmission to the network device for further allocation of resources for retransmission is highly concerned. [0029] In view of this, embodiments of the present disclosure provide a solution for reporting a HARQ feedback associated with a sidelink transmission, so as to solve the above problems and one or more of other potential problems. The solution can achieve the reporting of the HARQ feedback by scheduling the sidelink transmission and thus facilitate a resource allocation for a HARQ based retransmission in the sidelink. Principles and implementations of the present disclosure will be described in detail below with reference to the figures. [0030] FIG. 1 illustrates a schematic diagram of an example communication system 100 in which embodiments of the present disclosure can be implemented. As shown in FIG. 1, the communication system 100 may include a network device 110 and terminal devices 120 and 130 served by the network device 110. It is to be understood that the number of devices in FIG. 1 is given for the purpose of illustration without suggesting any limitations to the present disclosure. The communication network 100 may include any suitable number of network devices and/or terminal devices adapted for implementing implementations of the present disclosure. [0031] As shown in FIG. 1, the network device 110 may communicate with the terminal devices 120 and 130 via channels (such as, wireless communication channels) 111 and 121, respectively. For example, the network device 110 may transmit a configuration about SFCI to the terminal devices 120 and 130 via the channels 111 and 121, respectively. During a sidelink transmission, the terminal devices 120 and 130, if acting as a receiving device, may transmit a HARQ feedback for PSSCH/PSCCH to a transmitting device based on the received configuration. [0032] The terminal devices 120 and 130 are shown in FIG. 1 as vehicles which enable D2D/V2X communications. It is to be understood that embodiments of the present disclosure are also applicable to other terminal devices than vehicles, such as mobile phones, sensors and so on. In some embodiments, the terminal device 120 may communicate with the terminal device 130 via a sidelink 131. For example, the terminal device 120 may transmit information to the terminal device 130 via a PSSCH/PSCCH in the sidelink 131 and receive a HARQ feedback for reception of the information from the terminal device 130 via a PSFCH in the sidelink 131. [0033] In the following, some embodiments will be described with reference to the terminal device 120 as an example of a transmitting device (also referred as a source device) and with reference to the terminal device 130 as an example of a receiving device (also referred as a destination device) . For example, the terminal device 120 may also be referred to as the “transmitting device 120” , and the terminal device 130 may also be referred to as the “receiving device 130” . It is to be understood that this is merely for the purpose of discussion, without suggesting any limitations to the scope of the present disclosure. [0034] The communications in the communication system 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like. Furthermore, the communications may be performed according to any generation communication protocols either currently known or to be developed in the future. Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols. [0035] FIG. 2 shows a schematic diagram illustrating a process 200 for reporting a HARQ feedback associated with a sidelink transmission according to embodiments of the present disclosure. For the purpose of discussion, the process 200 will be described with reference to FIG. 1. The process 200 may involve the network device 110 and the terminal devices 120 and 130 as illustrated in FIG. 1. [0036] As shown in FIG. 2, the network device 110 may transmit 210, to the transmitting device 120, an indication of reporting a HARQ feedback associated with a sidelink transmission between the transmitting device 120 and the receiving device 130. In some embodiments, the indication may specify whether the HARQ feedback is reported. Alternatively or additionally, in some embodiments, the indication may specify how to report the HARQ feedback. In some embodiments, the indication may specify how to perform the sidelink transmission. [0037] For example, in some embodiments, the network device 110 may transmit, to the transmitting device 120, a sidelink grant on a downlink (DL) carrier to schedule a sidelink transmission. With the sidelink grant, the network device 110 may assign, to the transmitting device 120, a resource for the sidelink transmission, and transmit the indication so as to configure the transmitting device 120 to report the HARQ feedback associated with the sidelink transmission. In some alternative embodiments, the indication may be transmitted separately with the sidelink grant. [0038] Upon receiving the indication, the transmitting device 120 may determine 220, based on the received indication, whether the HARQ feedback associated with the sidelink transmission is reported. Alternatively or additionally, in some embodiments, the transmitting device 120 may determine, based on the received indication, how to report the HARQ feedback. In some embodiments, the transmitting device 120 may determine, based on the received indication, how to perform the sidelink transmission. [0039] The transmitting device 120 may transmit 230 traffic information via the sidelink 131 to the receiving device 130 based on the received indication. Upon receiving the traffic information, the receiving device 130 may transmit 240, to the transmitting device 120, the HARQ feedback such as an acknowledge (ACK) or a negative acknowledge (NACK) for the reception of the traffic information. [0040] Upon receiving the HARQ feedback from the receiving device 130, the transmitting device 120 may determine 245 a codebook for the HARQ feedback that is to be transmitted in an uplink (UL) slot. Upon determining the codebook, the transmitting device 120 may transmit 250 the codebook in the UL slot to the network device 110 based on the received indication. [0041] The network device 110 may correspondingly receive the codebook in the UL slot and determine 255 the HARQ feedback from the codebook. In this way, the network device 110 may correctly and timely perform the resource allocation for the HARQ based retransmission. [0042] Embodiments of the present disclosure mainly involve an improvement for the communications at the network device 110 and at the transmitting device, and the communication at the receiving device 130 is not limited here, as shown by a dash line in FIG. 2. Corresponding to the process described in FIG. 2, embodiments of the present disclosure provide methods of communication implemented at a network device and a transmitting device in a SL scheduled by the network device. These methods will be described below with reference to FIGs. 3 to 8. [0043] FIG. 3 illustrates an example method 300 of communication implemented at a transmitting device in a SL transmission in accordance with some embodiments of the present disclosure. For example, the method 300 may be performed at a communication device which acts as a transmitting device in a SL transmission, such as the transmitting device 120. For the purpose of discussion, in the following, the method 300 will be described with reference to FIG. 1. It is to be understood that the method 300 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard. [0044] At block 310, the transmitting device 120 determines a codebook for a HARQ feedback associated with a SL transmission scheduled by the network device 110. In the context of this disclosure, the SL transmission is performed between the transmitting device 120 and the receiving device 130. The processing at block 310 may correspond to that shown by 245 in FIG. 2. [0045] In some embodiments, the transmitting device 120 may determine a set of SL slots for the SL transmission, and determine, as the codebook, one or more bits indicating the HARQ feedback for each of the SL slots sequentially. It should be note that UL slots to be used for transmission of a HARQ feedback for a SL transmission have a predetermined relationship in a time domain with SL slots for the SL transmission. In some embodiments, the codebook is determined to be transmitted in one UL slot. [0046] FIG. 4 illustrates an example method 400 of determining the codebook for the HARQ feedback in accordance with some embodiments of the present disclosure. For example, the method 400 may be performed at a communication device which acts as a transmitting device in a SL transmission, such as the transmitting device 120. For the purpose of discussion, in the following, the method 400 will be described with reference to FIG. 1. It is to be understood that the method 400 may include additional blocks not shown and/or may omit some blocks as shown, and the scope of the present disclosure is not limited in this regard. [0047] At block 410, the transmitting device 120 may determine whether a manner of the determination of the codebook is semi-static or dynamic. In some embodiments, the transmitting device 120 may determine the manner of the determination of the codebook according to configuration or pre-configuration. If determining that the manner of the determination of the codebook is semi-static, that is, determining the codebook based on semi-static configuration rather than dynamic scheduling, the transmitting device 120 may determine a set of SL slots for at least one of a PSFCH conveying the HARQ feedback for the SL transmission, a PSSCH for the SL transmission, and a PSCCH for the SL transmission, and determine, as the codebook, one or more bits indicating the HARQ feedback for each of the SL slots sequentially. [0048] An example embodiment in which the set of SL slots is determined for at least one of PSCCH and PSSCH will be described below with reference to blocks 420-430 in FIG. 4. At block 420, the transmitting device 120 may determine a set of SL slots for at least one of a PSCCH for the SL transmission and a PSSCH for the SL transmission. In some embodiments, the set of SL slots may comprise a SL slot which is at least partially overlapped with a further UL slot earlier than the UL slot by a predetermined value and in which the HARQ feedback is enabled to be reported to the network device 110. [0049] For example, in some embodiments, the predetermined value may be selected from a set of slot timing values that is configured or pre-configured. In some embodiments, if the last symbol of the SL slot is overlapped with the further UL slot earlier than the UL slot by the predetermined value, the transmitting device 120 may consider this SL slot in the set of SL slots. [0050] In some embodiments, the SL slot in the set of SL slots may belong to a transmission resource pool of the transmitting device 12 in which a SL resource allocation mode 1 is configured and the HARQ feedback is enabled by a higher layer signaling of the network device 110. In some embodiments, there may be an activated Type 1 SL SPS configured grant or activated Type 2 SL SPS configured grant on the SL slot in the set of SL slots, and the HARQ feedback is enabled by a higher layer signaling for the configured grants. [0051] For example, for an active SL bandwidth part (BWP) , an active UL BWP associated with the SL BWP, the transmitting device 120 may determine a set of Mc occasions for candidate PSCCH/PSSCH transmission for which the transmitting device 120 can transmit corresponding HARQ feedback information assumed to be received from the receiver of the PSCCH/PSSCH in a UL channel in an UL slot n UL. [0052] The transmitting device 120 may consider a SL slot with index n SL on the SL carrier belonging to the set Mc if at least following conditions are satisfied: [0053] -there is an element k 01, i in a set of slot timing value K 01 satisfying that the last symbol of SL slot n SL is overlapping with UL slot n UL-k 01, i, where the set of K 01 is configured or pre-configured for the UL BWP, and being the cardinality of the set K 01; and [0054] -SL slot n SL belonging to the transmission resource pool of the transmitting device 120 in which SL resource allocation mode 1 is configured, and in the resource pool HARQ feedback is enabled by a higher layer signaling of the network device 130; or [0055] -there is activated Type 1 SL SPS configured grant or activated Type 2 SL SPS configured grant on the n SL, and HARQ feedback to be reported to the to the network device 110 is enabled by higher layer signaling for the configured grants. [0056] In some alternative embodiments, the set of SL slots may comprise a SL slot which has an index being proportional to an index of the further UL slot and in which the HARQ feedback is enabled to be reported to the network device 110. [0057] For example, the transmitting device 120 may consider a SL slot with index n SL on the SL carrier c belonging to the set Mc if at least following conditions are satisfied: [0058] -there is an element k 01, i in a set of slot timing value K 01 satisfying that where [0059] the set of K 01 is configured or pre-configured for the UL BWP; [0060] being the cardinality of the set K 01; [0061] μ SL and μ UL are sub-carrier spacing index for the SL carrier and UL carrier respectively, as shown below; [0062] N Δ, c is configured SL slot number difference on carrier c, as shown in table I below, and N Δ, c can be configured to 0, or can be 0 in default; and [0063] N Δ, UL is configured UL slot number difference, as shown in table I below, and N Δ, c can be configured to 0, or can be 0 in default; and [0064] and [0065] -SL slot n SL belonging to the transmission resource pool of the transmitting device 120 in which SL resource allocation mode 1 is configured, and in the resource pool HARQ feedback is enabled by a higher layer signaling of the network device 130; or [0066] -there is activated Type 1 SL SPS configured grant or activated Type 2 SL SPS configured grant on the n SL, and HARQ feedback is enabled by higher layer signaling for the configured grants. [0067] After determining the set of the SL slots at block 420, at block 430, the transmitting device 120 may determine, as the codebook, one or more bits indicating the HARQ feedback for each of the SL slots sequentially, based on the number of the SL slots, the configured maximum number of physical channels that can be transmitted in each of the sidelink slots, and the configured maximum number of transport blocks (TBs) that can be transmitted in each physical channel. [0068] In some embodiments, the transmitting device 120 may determine HARQ feedback information bits to be reported to the network device 110, where where N SC is the number of configured SL carriers, N PSSCH, c is the configured maximum number of PSCCH or PSSCH that can be transmitted within one slot on SL carrier c, N TB, c is the configured max number of TB to be transmitted per PSSCH on SL carrier c, N SC, N PSSCH, c and N TB, c can be 1, or are all 1 in default. [0069] The bit may correspond to the HARQ feedback information of the n TB-th TB of the n PSSCH-th PSSCH at occasion m on the 0 th SL carrier. The bit may correspond to the HARQ feedback information of the n TB-th TB of the n PSSCH-th PSSCH at occasion m on the n SC-th SL carrier, where n SC>0. The bit may be set to NACK if the TB is not transmitted by the transmitting device 120 or the corresponding PSFCH for the TB is not received. [0070] An example embodiment in which the set of SL slots is determined for a PSFCH will be described below with reference to blocks 420’-430’ in FIG. 4. At block 420’, the transmitting device 120 may determine a set of SL slots for the PSFCH conveying the HARQ feedback from a receiver of the associated SL transmission. [0071] In some embodiments, the set of SL slots may comprise a SL slot which is at least partially overlapped with a further uplink slot earlier than the uplink slot by a predetermined value, and in which the PSFCH is configured, and HARQ feedback for SL transmissions associated with the PSFCH is enabled to be reported to the network device 110. [0072] For example, for a configured SL carrier, an active SL BWP on the SL carrier, an active UL BWP associated with the SL BWP, the UE determines a set of Mc occasions for candidate PSFCH reception for which the UE can transmit HARQ feedback information assumed to be included in the PSFCH in a UL channel in slot n UL. [0073] The transmitting device 120 may consider a SL slot with index n SL on the SL carrier belonging to the set M if at least following conditions are satisfied: [0074] -there is a PSFCH resource configuration on the SL slot n SL, [0075] -there is an element k 02, iin a set of slot timing value K 02 satisfying that the last symbol configured for PSFCH of SL slot n SL is overlapping with UL slot n UL -k 02, i, where the set of K 02 is configured or pre-configured and is the cardinality of the set K 02, and [0076] -the configured PSFCH resource is associated with the transmission resource pool of the transmitting device 120 in which SL resource allocation mode 1 is configured, and in the resource pool HARQ feedback is enabled by higher layer signaling of base station; or [0077] -the transmitting device 120 is supposed to receive PSFCH on SL slot n SL corresponding to a Type 1 SL SPS configured grant or activated Type 2 SL SPS configured grant. [0078] In some alternative embodiments, the set of sidelink slots may comprise a SL slot which has an index being proportional to an index of a further uplink slot earlier than the uplink slot by a predetermined value, and in which the PSFCH is configured, and HARQ feedback for SL transmissions associated with the PSFCH is enabled to be reported to the network device 110. [0079] For example, the transmitting device 120 may consider a SL slot with index n SL on the SL carrier belonging to the set Mc if at least following conditions are satisfied: [0080] -there is a PSFCH resource configuration on the SL slot n SL, and [0081] -there is an element k 01, i in a set of slot timing value K 02 satisfying that or where [0082] the set of K 02 is configured or pre-configured; [0083] being the cardinality of the set K 02; [0084] μ SL and μ UL are sub-carrier spacing index for the SL carrier and UL carrier respectively, as shown in Table 1 below; [0085] N Δ, c is configured SL slot number difference on carrier c, as shown in table 1 below, and N Δ, c can be configured to 0, or can be 0 in default; and [0086] N Δ, UL is configured UL slot number difference, and N Δ, c can be configured to 0, or can be 0 in default; and [0087] and [0088] -SL slot n SL belonging to the transmission resource pool of the transmitting device 120 in which SL resource allocation mode 1 is configured, and in the resource pool HARQ feedback is enabled by a higher layer signaling of the network device 130; or [0089] -the transmitting device 120 is supposed to receive PSFCH on SL slot n SL corresponding to a Type 1 SL SPS configured grant or activated Type 2 SL SPS configured grant. [0090] Tabel 1: an example of a relationship between sub-carrier spacing index μ and sub-carrier spacing Δf [0091] [Table 0001] μ Δf=2 μ·15 [kHz] 0 15 1 30 2 60 3 120 4 240 [0092] After determining the set of the SL slots at block 420’, at block 430’, the transmitting device 120 may determine, as the codebook, one or more bits corresponding to the HARQ feedback contained in each of the PSFCH sequentially, based on the number of the PSFCH slots, the periodicity of PSFCH in terms of slot, the configured maximum number of physical channels that can be transmitted in each SL slot, and the configured maximum number of TBs that can be transmitted in each physical channel. [0093] In some embodiments, the transmitting device 120 may determine HARQ feedback information bits to be reported to the network device 110, where where N SC is the number of configured SL carriers, N PSSCH, c is the configured maximum number of PSCCH or PSSCH that can be transmitted within one slot on SL carrier c, N TB, c can be 1, or are all 1 in default, P PSFCH, c is the periodicity of PSFCH resources configured on SL carrier c, the value of P PSFCH, c is set to 1 if HARQ feedback information bundling in time domain is enabled on SL carrier c (i.e. “and” operation is applied to each TB of multiple PSSCHs for which HARQ feedback information are feedback in the same PSFCH) . [0094] The bit block may correspond to the HARQ feedback information bits conveyed in the m-th PSFCH on the 0 th SL carrier. The bit block may correspond to the HARQ feedback information bits conveyed in the m-th PSFCH on the n SC-th SL carrier, where n SC>0. Corresponding bits may be set to NACK if the m-th PSFCH is not received. If the number of HARQ feedback information bits O PSFCH, m, cconveyed in the m-th PSFCH is smaller than N PSSCH, c*N TB, c*P PSFCH, c, then the last N PSSCH, c*N TB, c*P PSFCH, c-O PSFCH, m, c bits of the bit block corresponding to m-th PSFCH on the c-th SL carrier are set to NACK. [0095] In some embodiments, the solution (referred to be as Solution 1) as described in connection with blocks 420-430 in FIG. 4 or the solution (referred to be as Solution 2) as described in connection with blocks 420’-430’ in FIG. 4 may be adopted in case that the transmitting device 120 is not configured to report HARQ feedback information for DL, SR and CSI. In some alternative embodiments, Solution 1 or 2 may be adopted in case that dedicated UPLINK CHANNEL resources are configured or pre-configured for the SL HARQ feedback and the HARQ feedback for SL is configured as semi-static. [0096] In some embodiments, if O ACK, SL≤11, the transmitting device 120 may determine a number of HARQ feedback information bits for obtaining a transmission power for a UPLINK CHANNEL, as: [0097] in Solution 1: where is the number of SL transport block UE transmitted in PSCCH/PSSCH transmission occasion m for SL carrier c. [0098] in Solution 2: [0099] Returning to FIG. 4, if determining at block 410 that the manner of the determination of the codebook is dynamic, that is, determining the codebook based on received SL DCI, the transmitting device 120 may, at block 440, determine, based on one or more timing values in a time period, a set of DL slots for monitoring downlink control information (DCI) for scheduling the SL transmission, the time period starting from a reception timing of the DCI for scheduling the SL transmission and ending at a transmission timing of the HARQ feedback in the UL slot. [0100] For example, in some embodiments, the transmitting device 120 may determine monitoring occasions (i.e., DL slots) for specific type of SL DCI on an active DL BWP of a serving cell, and for which the transmitting device 120 transmits HARQ feedback information in a same UL channel in slot n UL. The specific type of SL DCI schedules PSCCH/PSSCH for which HARQ feedback is enabled. [0101] In some embodiments, the monitoring occasions may be determined based on SL DCI to HARQ feedback timing values for UL channel transmission with HARQ feedback for SL DCI scheduled PSCCH/PSSCH being reported in slot n UL. In some alternative embodiments, the monitoring occasions may be determined based on SL DCI to scheduled PSCCH/PSSCH timing values, scheduled PSCCH/PSSCH to PSFCH timing values, and PSFCH to UL channel timing values, with HARQ feedback information for the SL DCI scheduled PSCCH/PSSCH reported to the network device 110 in slot n UL. [0102] In some embodiments, SL DCI to HARQ-ACK feedback timing, SL DCI to scheduled PSCCH/PSSCH timing, scheduled PSCCH/PSSCH to PSFCH timing, and PSFCH to UPLINK CHANNEL timing are specified. In some embodiments, SL DCI to HARQ feedback timing, SL DCI to scheduled PSCCH/PSSCH timing, scheduled PSCCH/PSSCH to PSFCH timing, and PSFCH to UL channel timing are configured or pre-configured. [0103] In some embodiments, the transmitting device 120 may determine the set of M SL DCI monitoring occasions (i.e., DL slots) which is defined as the union of SL DCI monitoring occasions across active DL BWPs of configured serving cells, ordered in ascending order of start time of the search space set associated with a SL DCI monitoring occasion. [0104] After determining the set of DL slots at block 440, at block 450, the transmitting device 120 may determine the codebook based on at least one of the DCI monitored in the DL slots, a counter assignment indicator indicating accumulative number of PSSCHs or PSCCHs for the SL transmission, and a total assignment indicator indicating a total number of PSSCHs or PSCCHs for the SL transmission. [0105] In some embodiments, a counter SL assignment indicator (SAI) field in SL DCI denotes the accumulative number of {serving cells, SL DCI monitoring occasion} -pair (s) in which SL DCI scheduling PSCCH/PSSCH is present, up to the current serving cell and current SL DCI monitoring occasion, first in ascending order of serving cell and then in ascending order of SL DCI monitoring occasion index m, where 0≤m