Physical sidelink feedback channel communication method, terminal, and storage medium

Abstract

The present disclosure relates to a physical sidelink feedback channel (PSFCH) communication method, a terminal, and a storage medium. The communication method comprises: determining a time-frequency resource occupied by a PSFCH; and sending the PSFCH on the basis of the time-frequency resource. According to the present disclosure, by determining the time-frequency resource occupied by sending the PSFCH, the coverage of the PSFCH can be enhanced by increasing the time-frequency resource, the coverage of the PSFCH can also be enhanced by sending the higher power of the PSFCH on a corresponding time-frequency resource, and the coverage of the PSFCH can also be enhanced by increasing the time-frequency resource and sending the higher power of the PSFCH on the time-frequency resource.

Description

Physical side link feedback channel communication method, terminal and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a physical sidelink feedback channel (PSFCH) communication method, terminal, and storage medium. Background Art

[0002] In related technologies, uplink signal transmission in the frequency range (FR) 2-2 does not always need to meet the occupied channel bandwidth (OCB) requirement. Currently, the existing PSFCH has a very short transmission duration in the time domain and occupies only one PRB in the frequency domain, resulting in very low PSFCH coverage in FR2-2.

[0003] Summary of the Invention

[0004] It is currently unclear how to ensure coverage of PSFCH transmission under FR2-2.

[0005] The embodiments of the present disclosure provide a PSFCH communication method, a terminal, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a PSFCH communication method is proposed, the method comprising: determining time-frequency resources occupied by the PSFCH; and sending the PSFCH based on the time-frequency resources.

[0007] According to a second aspect of an embodiment of the present disclosure, a PSFCH communication method is proposed, the method comprising: determining time-frequency resources occupied by the PSFCH; and receiving the PSFCH based on the time-frequency resources.

[0008] According to the third aspect of the embodiment of the present disclosure, a PSFCH communication method is proposed, which includes: a first terminal determines the time-frequency resources occupied by the PSFCH; the first terminal sends the PSFCH based on the time-frequency resources; and a second terminal receives the PSFCH based on the time-frequency resources.

[0009] According to the fourth aspect of the embodiment of the present disclosure, a first terminal is proposed, including: a processing module and a transceiver module; the processing module is used to determine the time-frequency resources occupied by PSFCH; the transceiver module is used to send PSFCH based on the time-frequency resources.

[0010] According to the fifth aspect of the embodiment of the present disclosure, a second terminal is proposed, including: a processing module and a transceiver module; the processing module is used to determine the time-frequency resources occupied by PSFCH; the transceiver module is used to receive PSFCH based on the time-frequency resources.

[0011] According to a sixth aspect of an embodiment of the present disclosure, a first terminal is proposed, comprising: one or more processors; wherein the first terminal is used to execute the PSFCH communication method in the first aspect.

[0012] According to a seventh aspect of an embodiment of the present disclosure, a second terminal is proposed, comprising: one or more processors; wherein the second terminal is used to execute the PSFCH communication method in the second aspect.

[0013] According to the eighth aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a first terminal and a second terminal, wherein the first terminal is configured to implement the PSFCH communication method in the first aspect, and the second terminal is configured to implement the PSFCH communication method in the second aspect.

[0014] According to a ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the PSFCH communication method in the first aspect or the second aspect.

[0015] The present disclosure determines the time-frequency resources occupied by sending the PSFCH, and can enhance the coverage of the PSFCH while increasing the time-frequency resources and / or sending a higher power of the PSFCH on the time-frequency resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0017] FIG1 is a schematic diagram showing a communication system architecture according to an embodiment of the present disclosure.

[0018] FIG2 is a schematic diagram showing an interaction of a PSFCH communication method according to an embodiment of the present disclosure.

[0019] FIG3 is a flow chart showing a PSFCH communication method according to an exemplary embodiment.

[0020] FIG4 is a flow chart showing another PSFCH communication method according to an exemplary embodiment.

[0021] FIG5 a is a schematic diagram of a PSFCH communication device according to an exemplary embodiment.

[0022] FIG5 b is a schematic diagram of another PSFCH communication device according to an exemplary embodiment.

[0023] Fig. 6a is a schematic diagram showing a communication device according to an exemplary embodiment.

[0024] FIG6 b is a schematic diagram of a chip according to an exemplary embodiment. DETAILED DESCRIPTION

[0025] The embodiments of the present disclosure provide a PSFCH communication method, a terminal, and a storage medium.

[0026] In a first aspect, an embodiment of the present disclosure proposes a PSFCH communication method, the method comprising: determining time-frequency resources occupied by the PSFCH; and sending the PSFCH based on the time-frequency resources.

[0027] In the above embodiment, by determining the time-frequency resources occupied by sending the PSFCH, the time-frequency resources can be increased and / or a higher power of sending the PSFCH on the time-frequency resources can be used to enhance the coverage of the PSFCH.

[0028] In combination with some embodiments of the first aspect, the time-frequency resources occupied by PSFCH include: occupying N consecutive physical resource blocks PRBs in the frequency domain, where N is an integer greater than or equal to 1; or occupying N discontinuous PRBs in the frequency domain.

[0029] In the above embodiment, the PSFCH may occupy N PRBs in the frequency domain. By increasing the occupied frequency domain resources, the coverage of the PSFCH is enhanced.

[0030] In combination with some embodiments of the first aspect, N is related to the subcarrier spacing.

[0031] In the above embodiment, a relationship can be established between the subcarrier spacing and the number of PRBs, so that the number of PRBs can be adjusted by adjusting the subcarrier spacing. Different amounts of frequency domain resources can be increased to achieve coverage of the PSFCH.

[0032] In combination with some embodiments of the first aspect, N is related to the subcarrier spacing, including: the larger the subcarrier spacing, the smaller N; or, the larger the subcarrier spacing, the larger N.

[0033] In the above embodiment, a variety of relationships between subcarrier spacing and the number of PRBs are provided, so that the subcarrier spacing can be adjusted and the number of PRBs can be adjusted in a variety of different scenarios, thereby increasing universality.

[0034] In combination with some embodiments of the first aspect, N is a fixed value or a value in a set of first values, and N is determined in at least one of the following ways: based on resource pool configuration; based on partial bandwidth BWP configuration; based on predefinition; based on first downlink control information DCI indication; based on first side link control information SCI indication.

[0035] In the above embodiments, multiple methods for determining N are provided to be applicable to determining the number of PRBs in different scenarios, thereby increasing universality.

[0036] In combination with some embodiments of the first aspect, the time-frequency resources occupied by PSFCH include: occupying H consecutive symbols in the time domain, except for automatic gain control AGC symbols and guard interval GP symbols, where H is an integer greater than or equal to 1; or, occupying H discontinuous symbols in the time domain, except for AGC symbols and GP symbols.

[0037] In the above embodiment, the PSFCH may occupy H symbols in the time domain. By increasing the occupied time domain resources, the coverage of the PSFCH is enhanced.

[0038] In combination with some embodiments of the first aspect, H is related to the subcarrier spacing.

[0039] In the above embodiment, a relationship can be established between the subcarrier spacing and the number of occupied symbols, so that the number of occupied symbols can be adjusted by adjusting the subcarrier spacing, thereby increasing the number of occupied different symbols and achieving enhanced coverage of the PSFCH.

[0040] In combination with some embodiments of the first aspect, H is related to the subcarrier spacing, including: the larger the subcarrier spacing, the larger H; or, the larger the subcarrier spacing, the smaller H.

[0041] In the above embodiment, a variety of relationships between subcarrier spacing and the number of occupied symbols are provided, so that the subcarrier spacing can be adjusted and the number of occupied symbols can be adjusted in a variety of different scenarios, thereby increasing universality.

[0042] In combination with some embodiments of the first aspect, H is less than or equal to a maximum number of consecutive symbols, where the maximum number of consecutive symbols is related to the subcarrier spacing, or the maximum number of consecutive symbols is a preconfigured value.

[0043] In the above embodiment, an upper limit on the number of symbols occupied by the PSFCH is set to avoid waste of resources caused by occupying too many symbols.

[0044] In combination with some embodiments of the first aspect, H is a fixed value or a value in a set of second values, and H is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefinition; based on a second DCI indication; based on a second SCI indication.

[0045] In the above embodiment, multiple ways of determining H are provided to be applicable to determining the number of occupied symbols in different scenarios, thereby increasing universality.

[0046] In combination with some embodiments of the first aspect, the maximum number of consecutive symbols is a fixed value or a value in a set of third values, and the maximum number of consecutive symbols is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on a third DCI indication; based on a third SCI indication.

[0047] In the above embodiment, multiple ways of determining the maximum number of consecutive symbols are provided to be applicable to determining the upper limit of the number of occupied symbols in different scenarios, thereby increasing universality.

[0048] In combination with some embodiments of the first aspect, sending the PSFCH based on the time-frequency resources includes: sending the PSFCH using the first power on the time-frequency resources.

[0049] In the above embodiment, a higher transmission power may be used to transmit the PSFCH on the corresponding time-frequency resources to enhance the coverage of the PSFCH.

[0050] In combination with some embodiments of the first aspect, the first power is determined based on the number N of PRBs occupied by PSFCH in the frequency domain, the second power and at least one of the power offset values, wherein the second power is the transmit power when 1 PSFCH occupies 1 PRB in the frequency domain, and N is an integer greater than or equal to 1.

[0051] In the above embodiment, a method for determining the power of transmitting the PSFCH is provided, so that the terminal can transmit the PSFCH using a higher transmission power, thereby enhancing the coverage of the PSFCH.

[0052] In combination with some embodiments of the first aspect, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the first parameter, and the second parameter, where N is an integer greater than or equal to 1.

[0053] In the above embodiment, a method for determining the power of transmitting the PSFCH is provided, so that the terminal can transmit the PSFCH using a higher transmission power, thereby enhancing the coverage of the PSFCH.

[0054] In combination with some embodiments of the first aspect, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power and the proportional coefficient K, where K is an integer or decimal greater than 1.

[0055] In the above embodiment, a method for determining the power of transmitting the PSFCH is provided, so that the terminal can transmit the PSFCH using a higher transmission power, thereby enhancing the coverage of the PSFCH.

[0056] In combination with some embodiments of the first aspect, the sum of the first powers of multiple PSFCHs sent simultaneously on the time-frequency resources is less than or equal to the maximum transmit power; wherein the maximum transmit power is pre-configured by the network device or pre-defined by the terminal, and the maximum transmit power is greater than the maximum transmit power corresponding to the frequency range FR1, or the maximum transmit power is greater than the maximum transmit power corresponding to FR2.

[0057] In the above embodiment, when multiple PSFCHs are transmitted, it is ensured that the total transmission power does not exceed the maximum transmission power, thereby avoiding adverse effects caused by excessive power.

[0058] In combination with some embodiments of the first aspect, the side link SL PSFCH format formate0 sequence is repeatedly transmitted on each PRB in the N PRBs.

[0059] In the above embodiment, a method of transmitting the PSFCH on multiple PRBs is provided, thereby enhancing the coverage of the PSFCH by increasing the occupied frequency domain resources.

[0060] In combination with some embodiments of the first aspect, on each of the N PRBs, the SL PSFCH formate 0 sequence is repeatedly transmitted based on a phase offset value.

[0061] In the above embodiment, a method of transmitting the PSFCH on multiple PRBs is provided, thereby enhancing the coverage of the PSFCH by increasing the occupied frequency domain resources.

[0062] In combination with some embodiments of the first aspect, different PRBs in the N PRBs respectively correspond to a phase offset value.

[0063] In the above embodiment, independent phase offset values ​​may be set for different PRBs, thereby improving the communication stability of sending PSFCHs on multiple PRBs.

[0064] In combination with some embodiments of the first aspect, a first sequence is transmitted on N PRBs, and a sequence length of the first sequence is N times the length of an SL PSFCH formate 0 sequence.

[0065] In the above embodiment, a method of transmitting the PSFCH on multiple PRBs is provided, thereby enhancing the coverage of the PSFCH by increasing the occupied frequency domain resources.

[0066] According to a second aspect of an embodiment of the present disclosure, a PSFCH communication method is provided, the method comprising: determining time-frequency resources occupied by the PSFCH; and receiving the PSFCH based on the time-frequency resources.

[0067] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0068] In combination with some embodiments of the second aspect, the time-frequency resources occupied by PSFCH include: occupying N consecutive physical resource blocks PRBs in the frequency domain, where N is an integer greater than or equal to 1; or occupying N discontinuous PRBs in the frequency domain.

[0069] In combination with some embodiments of the second aspect, N is related to the subcarrier spacing.

[0070] In combination with some embodiments of the second aspect, N is related to the subcarrier spacing, including: the larger the subcarrier spacing, the smaller N; or, the larger the subcarrier spacing, the larger N.

[0071] In combination with some embodiments of the second aspect, N is a fixed value or a value in a set of first values, and N is determined in at least one of the following ways: based on resource pool configuration; based on partial bandwidth BWP configuration; based on predefinition; based on first downlink control information DCI indication; based on first side link control information SCI indication.

[0072] In combination with some embodiments of the second aspect, the time-frequency resources occupied by PSFCH include: occupying H consecutive symbols in the time domain, except for automatic gain control AGC symbols and guard interval GP symbols, where H is an integer greater than or equal to 1; or, occupying H discontinuous symbols in the time domain, except for AGC symbols and GP symbols.

[0073] In combination with some embodiments of the second aspect, H is related to the subcarrier spacing.

[0074] In combination with some embodiments of the second aspect, H is related to the subcarrier spacing, including: the larger the subcarrier spacing, the larger H; or, the larger the subcarrier spacing, the smaller H.

[0075] In combination with some embodiments of the second aspect, H is less than or equal to a maximum number of consecutive symbols, where the maximum number of consecutive symbols is related to the subcarrier spacing, or the maximum number of consecutive symbols is a preconfigured value.

[0076] In combination with some embodiments of the second aspect, H is a fixed value or a value in a set of second values, and H is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefinition; based on a second DCI indication; based on a second SCI indication.

[0077] In combination with some embodiments of the second aspect, the maximum number of consecutive symbols is a fixed value or a value in a set of third values, and the maximum number of consecutive symbols is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on a third DCI indication; based on a third SCI indication.

[0078] In combination with some embodiments of the second aspect, receiving the PSFCH based on the time-frequency resources includes: receiving the PSFCH sent with the first power on the time-frequency resources.

[0079] In combination with some embodiments of the second aspect, the first power is determined based on the number N of PRBs occupied by PSFCH in the frequency domain, the second power and at least one of the power offset values, wherein the second power is the transmit power when 1 PSFCH occupies 1 PRB in the frequency domain, and N is an integer greater than or equal to 1.

[0080] In combination with some embodiments of the second aspect, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the first parameter, and the second parameter, where N is an integer greater than or equal to 1.

[0081] In combination with some embodiments of the second aspect, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power and the proportional coefficient K, where K is an integer or decimal greater than 1.

[0082] In combination with some embodiments of the second aspect, the sum of the first powers of multiple PSFCHs received simultaneously on the time-frequency resources is less than or equal to the maximum transmit power; wherein the maximum transmit power is pre-configured by the network device or pre-defined by the terminal, and the maximum transmit power is greater than the maximum transmit power corresponding to the frequency range FR1, or the maximum transmit power is greater than the maximum transmit power corresponding to FR2.

[0083] In combination with some embodiments of the second aspect, the side link SL PSFCH format formate0 sequence is repeatedly transmitted on each of the N PRBs.

[0084] In combination with some embodiments of the second aspect, on each of the N PRBs, the SL PSFCH formate 0 sequence is repeatedly transmitted based on a phase offset value.

[0085] In combination with some embodiments of the second aspect, different PRBs in the N PRBs correspond to a phase offset value respectively.

[0086] In combination with some embodiments of the second aspect, a first sequence is transmitted on N PRBs, and a sequence length of the first sequence is N times the length of an SL PSFCH formate 0 sequence.

[0087] According to a third aspect of an embodiment of the present disclosure, a PSFCH communication method is provided, the method including: a first terminal determines the time-frequency resources occupied by the PSFCH; the first terminal sends the PSFCH based on the time-frequency resources; and a second terminal receives the PSFCH based on the time-frequency resources.

[0088] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0089] According to a fourth aspect of an embodiment of the present disclosure, a first terminal is provided, including: a processing module and a transceiver module; the processing module is used to determine the time-frequency resources occupied by PSFCH; the transceiver module is used to send PSFCH based on the time-frequency resources.

[0090] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0091] According to the fifth aspect of the embodiment of the present disclosure, a second terminal is provided, including: a processing module and a transceiver module; the processing module is used to determine the time-frequency resources occupied by PSFCH; the transceiver module is used to receive PSFCH based on the time-frequency resources.

[0092] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0093] According to a sixth aspect of an embodiment of the present disclosure, a first terminal is provided, comprising: one or more processors; wherein the first terminal is configured to execute the first aspect and any one of the PSFCH communication methods in the first aspect.

[0094] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0095] According to a seventh aspect of an embodiment of the present disclosure, a second terminal is provided, comprising: one or more processors; wherein the second terminal is configured to execute the second aspect and any one of the PSFCH communication methods in the second aspect.

[0096] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0097] According to the eighth aspect of an embodiment of the present disclosure, a communication system is provided, comprising a first terminal and a second terminal, wherein the first terminal is configured to implement the first aspect and any one of the PSFCH communication methods in the first aspect, and the second terminal is configured to implement the second aspect and any one of the PSFCH communication methods in the second aspect.

[0098] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0099] According to a ninth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, which, when executed on a communication device, enable the communication device to execute any one of the PSFCH communication methods of the first aspect or the second aspect.

[0100] In the above embodiment, by determining the time-frequency resources occupied by the PSFCH, it is possible to enhance the coverage of the PSFCH by increasing the time-frequency resources and / or transmitting a higher power of the PSFCH on the time-frequency resources.

[0101] According to a tenth aspect of an embodiment of the present disclosure, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation manner of the first aspect or the second aspect.

[0102] According to an eleventh aspect of the embodiments of the present disclosure, the embodiments of the present disclosure propose a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first aspect or the second aspect.

[0103] According to a twelfth aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first or second aspect.

[0104] It is understandable that the terminal, access network device, first network element, other network elements, core network device, communication system, storage medium, program product, computer program, chip, or chip system involved in each embodiment of the present disclosure are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0105] The disclosed embodiments provide a sidelink PSFCH communication method, terminal, and storage medium. In some embodiments, the terms "PSFCH communication method," "information processing method," and "communication method" are interchangeable; the terms "PSFCH communication device," "information processing device," and "communication device" are interchangeable; and the terms "information processing system," "communication system," and "communication system" are interchangeable.

[0106] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0107] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0108] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0109] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0110] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0111] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0112] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0113] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0114] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0115] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0116] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0117] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0118] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0119] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0120] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0121] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0122] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0123] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0124] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0125] FIG1 is a schematic diagram showing a communication system architecture according to an embodiment of the present disclosure.

[0126] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0127] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0128] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0129] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0130] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0131] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0132] In some embodiments, a core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0133] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0134] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1a, or a portion thereof, but are not limited thereto. The entities shown in FIG1a are illustrative only. The communication system may include all or part of the entities shown in FIG1a, or may include other entities other than those shown in FIG1a. The number and form of the entities may be arbitrary, and the entities may be physical or virtual. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0135] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0136] In the embodiments of the present disclosure, in FR2-2, it is currently stipulated that the device supports a transmission mode that can occupy at least 70% of the nominal bandwidth (declared nominal channel bandwidth). Among them, the frequency range corresponding to FR2-2 is between 52.6GHz and 71GHz. In the Uu FR2-2 of release 17 (R17), it is stipulated that the transmission of uplink signals does not always need to meet the OCB requirements. The device only needs to be able to support at least one mileage-free signal or channel transmission that occupies the nominal bandwidth. Therefore, when the sidelink (SL) operates in FR2-2, OCB is not a mandatory requirement for the sidelink signal. Among them, Uu represents the interface used for communication between the terminal and the network device.

[0137] In some embodiments, the maximum power spectral density (PSD) is currently specified at 23dBm / MHz in FR2-2, and the maximum RF output power is 40dBm. When operating in FR2-2, the sidelink also needs to meet this power spectral density (PSD) limit. However, the existing PSFCH only occupies one physical resource block (PRB) in the frequency domain. Assuming a subcarrier spacing of 120KHz, one PRB occupies 1.44MHz in the frequency domain. The transmit power of the PSFCH is 23+10log(1.44)=24.58dBm. This is significantly less than 40dBm.

[0138] In some embodiments, in the PSFCH time domain, in addition to one automatic gain control (AGC) symbol and one guard period (GP) symbol, only one symbol is used to transmit the PSFCH. Furthermore, subcarrier frequencies supported in FR2-2 are 120 kHz, 480 kHz, and 960 kHz. The duration of one symbol is very short, resulting in very low PSFCH coverage in FR2-2.

[0139] Obviously, if the current sidelink PSFCH design is used, the PSFCH transmission power is very low, which results in very low reliability of PSFCH transmission by the terminal.

[0140] FIG2 is a schematic diagram illustrating an interaction of a PSFCH communication method according to an embodiment of the present disclosure. As shown in FIG2 , the present disclosure embodiment relates to a PSFCH communication method for a communication system 100, the method comprising:

[0141] Step S2101: The first terminal determines the time-frequency resources occupied by the PSFCH.

[0142] In some embodiments, the first terminal may determine the time-frequency resources occupied for sending the PSFCH.

[0143] For example, the time-frequency resources occupied by the PSFCH may include the time domain resources occupied by the PSFCH.

[0144] For another example, the time-frequency resources occupied by the PSFCH may include frequency domain resources occupied by the PSFCH.

[0145] In some embodiments, the terms "side link", "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" and the like can be used interchangeably.

[0146] In some embodiments, the first terminal may be the terminal 101 mentioned above.

[0147] In some embodiments, the frequency domain resources occupied by the PSFCH may be N consecutive PRBs in the frequency domain.

[0148] In some embodiments, the frequency domain resources occupied by the PSFCH may be N non-contiguous PRBs in the frequency domain.

[0149] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0150] In some embodiments, N is an integer greater than or equal to one.

[0151] For example, the frequency domain resources occupied by the PSFCH may be N PRBs in the frequency domain, and the N PRBs may be continuous or discontinuous.

[0152] In some embodiments, N may be related to the subcarrier spacing.

[0153] For example, the number of PRBs N may vary with the subcarrier spacing.

[0154] In some embodiments, the larger the subcarrier spacing, the smaller N can be.

[0155] For example, the frequency band size corresponding to the PSFCH is related to the subcarrier spacing and the number of PRBs. N represents the number of PRBs. Therefore, if the frequency band size remains unchanged, a larger subcarrier spacing corresponds to a smaller N.

[0156] In some embodiments, the larger the subcarrier spacing, the larger N can be.

[0157] For example, when the frequency band corresponding to the PSFCH becomes larger, the subcarrier spacing can be increased together with N.

[0158] In some embodiments, N may be a fixed value.

[0159] In some embodiments, N may be one of a set of first values.

[0160] In some embodiments, N may be determined based on a resource pool configuration.

[0161] For example, a fixed value N may be determined based on the resource pool configuration. In another example, a set of first values ​​may be determined based on the resource pool configuration, where N is a value in the set of first values.

[0162] In some embodiments, N may be determined based on a bandwidth part (BWP) configuration.

[0163] For example, a fixed value N may be determined according to the BWP configuration. For another example, a set of first values ​​may be determined according to the BWP configuration, where N is a value in the set of first values.

[0164] In some embodiments, N may be determined based on a predefined basis.

[0165] For example, the fixed value N may be determined according to a predefined rule.

[0166] In some embodiments, N may be indicated based on first downlink control information (DCI).

[0167] For example, the fixed value N may be determined according to the first DCI indication. In this case, the fixed value N may be directly indicated by the first DCI. Alternatively, a value in the first value set may be indicated as N by the first DCI indication.

[0168] In some embodiments, N may be indicated based on a first sidelink control information (SCI).

[0169] For example, the fixed value N may be determined according to the first SCI indication. In this case, the fixed value N may be directly indicated by the first SCI. Alternatively, a certain value in the first value set may be indicated as N by the first SCI indication.

[0170] In some embodiments, N may be determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefinition; based on the first DCI indication; based on the first SCI indication.

[0171] It can be seen from the above embodiments that the present disclosure can increase the coverage of PSFCH by increasing the frequency domain resources occupied by PSFCH.

[0172] In some embodiments, the time domain resources occupied by the PSFCH may be, in the time domain, H consecutive symbols except for AGC symbols and GP symbols.

[0173] In some embodiments, the time domain resources occupied by the PSFCH may be H discontinuous symbols except AGC symbols and GP symbols in the time domain.

[0174] In some embodiments, H may be an integer greater than or equal to 1.

[0175] For example, the time domain resources occupied by the PSFCH may occupy H symbols in the time domain, excluding AGC symbols and GP symbols. The H symbols may be H consecutive symbols or H discontinuous symbols. The symbols may refer to orthogonal frequency division multiplexing (OFDM) symbols.

[0176] In some embodiments, H may be related to the subcarrier spacing.

[0177] For example, the number of symbols H may vary with the subcarrier spacing.

[0178] In some embodiments, the larger the subcarrier spacing, the larger H can be.

[0179] For example, a larger subcarrier spacing means a shorter symbol length. Therefore, when the time domain range remains unchanged, a larger subcarrier spacing means a greater number of symbols H.

[0180] In some embodiments, the larger the subcarrier spacing, the smaller H can be.

[0181] For example, when the time domain range becomes smaller, the larger the subcarrier spacing is, the smaller the number of symbols H can be.

[0182] In some embodiments, H is less than or equal to a maximum number of consecutive symbols, where the maximum number of consecutive symbols may be denoted as Hmax. Hmax is related to the subcarrier spacing, or is a preconfigured value.

[0183] It is understood that the H symbols occupied by the PSFCH in the time domain do not exceed Hmax at most. Hmax can be a pre-configured fixed value. Hmax can also be related to the subcarrier spacing, that is, Hmax can vary depending on the subcarrier spacing.

[0184] In some embodiments, H may be a fixed value.

[0185] In some embodiments, H may be one of a set of second values.

[0186] In some embodiments, H may be determined based on a resource pool configuration.

[0187] For example, a fixed value H may be determined based on the resource pool configuration. In another example, a set of second values ​​may be determined based on the resource pool configuration, where H is a value in the set of second values.

[0188] In some embodiments, H may be determined based on the BWP configuration.

[0189] For example, a fixed value H may be determined according to the BWP configuration. In another example, a set of second values ​​may be determined according to the BWP configuration, where H is a value in the set of second values.

[0190] In some embodiments, H may be determined based on a predefined definition.

[0191] For example, the fixed value H may be determined according to a predefined rule.

[0192] In some embodiments, H may be based on a second DCI indication.

[0193] For example, the fixed value H may be determined according to the second DCI indication. In this case, the fixed value H may be directly indicated by the second DCI. Alternatively, a certain value in the second value set may be indicated as H by the second DCI indication.

[0194] In some embodiments, H may be based on a second SCI indication.

[0195] For example, the fixed value H may be determined according to the second SCI indication. In this case, the fixed value H may be directly indicated by the second SCI. Alternatively, a certain value in the second value set may be indicated as H by the second SCI indication.

[0196] In some embodiments, H may be determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined; based on a second DCI indication; based on a second SCI indication.

[0197] In some embodiments, Hmax may be a fixed value.

[0198] In some embodiments, Hmax may be one value from a third set of values.

[0199] In some embodiments, Hmax may be determined based on resource pool configuration.

[0200] For example, a fixed value Hmax may be determined based on the resource pool configuration. Another example is that a set of third values ​​may be determined based on the resource pool configuration, wherein Hmax is a value in the set of third values.

[0201] In some embodiments, Hmax may be determined based on the BWP configuration.

[0202] For example, a fixed value Hmax may be determined based on the BWP configuration. In another example, a set of third values ​​may be determined based on the BWP configuration, where Hmax is a value in the set of third values.

[0203] In some embodiments, Hmax may be determined based on a predefined definition.

[0204] For example, the fixed value Hmax may be determined according to a predefined rule.

[0205] In some embodiments, Hmax may be based on a third DCI indication.

[0206] For example, the fixed value Hmax may be determined based on the third DCI indication. In this case, the fixed value Hmax may be directly indicated by the third DCI. Alternatively, a value in the third value set may be indicated by the third DCI as Hmax.

[0207] In some embodiments, Hmax may be based on a third SCI indication.

[0208] For example, the fixed value Hmax may be determined according to the third SCI indication. In this case, the fixed value Hmax may be directly indicated by the third SCI indication. Alternatively, a value in the third value set may be indicated by the third SCI indication as Hmax.

[0209] In some embodiments, Hmax may be determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined; based on a third DCI indication; based on a third SCI indication.

[0210] It can be seen from the above embodiments that the present disclosure can increase the coverage of PSFCH by increasing the time domain resources occupied by PSFCH.

[0211] Step S2102: The first terminal sends a PSFCH to the second terminal based on time-frequency resources.

[0212] In some embodiments, the first terminal may send a PSFCH to the second terminal based on the time-frequency resources determined in S2101.

[0213] In some embodiments, the second terminal may receive the PSFCH sent by the first terminal based on the time-frequency resources determined in S2101.

[0214] It is understood that when receiving the PSFCH sent by the first terminal, the second terminal can determine the time-frequency resources occupied by the PSFCH in the same manner as the first terminal in S2101, so that the second terminal can receive the PSFCH sent by the first terminal on the correct time-frequency resources.

[0215] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0216] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0217] In some embodiments, the first terminal may send the PSFCH using the first power on the time-frequency resources determined in S2101.

[0218] It is understandable that the first power may be determined based on the time-frequency resources determined in S2101. That is, the first power for sending the PSFCH may also be different depending on the time-frequency resources occupied by the PSFCH.

[0219] In some embodiments, the first power may be determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and a power offset value. The second power may be the transmit power when one PSFCH occupies one PRB in the frequency domain.

[0220] For example, the second power can be determined by Formula 1. PSFCH，one =P 0，PSFCH +10log 10 (2 μ )+α PSFCHPL ...Formula 1

[0221] Among them, P PSFCH，one That is the second power, P 0，PSFCH It can be configured through radio resource control (RRC) parameters. For example, it can be configured through RRC parameters d1-P0-PSFCH-r17 or d1-P0-PSFCH-r16. 0，PSFCH The value of is an integer, and its value range can be (-202, 24). PSFCH It can be configured by the parameter dl-Alpha-PSFCH-r16. The value can be any one of the following values, such as {0, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1}. Assuming that the parameter dl-Alpha-PSFCH-r16 is not configured, then α PSFCH Can be 1. PL is PL b,f,c (q d ), expressed as the effective downlink (DL) BWP for carrier f of serving cell c, the terminal uses the reference signal (RS) index q d The calculated downlink path loss estimate. Its unit is dB. μ represents the subcarrier spacing.

[0222] In some embodiments, the first power can be determined by Formula 2. PSFCH，one =P 0，PSFCH +10log 10 (2 μ ×N)+α PSFCH PL + β ... Formula 2

[0223] Among them, P' PSFCH，one represents the first power, and β represents the power offset. As can be seen, the first power is based on the second power, taking into account the number N of occupied PRBs in the frequency domain and the power offset. This makes the first power greater than the second power, achieving enhanced PSFCH coverage.

[0224] It is understandable that the P' PSFCH，one Can be used for power control of FR2-2.

[0225] In some embodiments, β may be determined based on a resource pool configuration.

[0226] In some embodiments, β may be determined based on the BWP configuration.

[0227] In some embodiments, β may be determined based on a predefined value.

[0228] It should be understood that Formula 2 only provides one method for determining the first power based on the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and the power offset value. In other embodiments, the first power may also be determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and the power offset value. For example, the first power may be determined based on the number N of PRBs; or the first power may be determined based on the number N of PRBs and the second power. This is not limited in this disclosure.

[0229] In some embodiments, the first power may be determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, a first parameter, and a second parameter.

[0230] In some embodiments, the first power can be determined by Formula 3. PSFCH，one =P' 0，PSFCH +10log 10 (2 μ ×N)+α' PSFCH PL ...Formula 3

[0231] Among them, P' 0，PSFCH That is the first parameter, α' PSFCH That is the second parameter. P' 0，PSFCH >P 0，PSFCH , and α' PSFCH >α PSFCH It can be understood that P' 0，PSFCH and α' PSFCH P' is the parameter configured in the FR2-2 scenario. 0，PSFCH Greater than R16 or R17 sidelink configuration P 0，PSFCH ,α' PSFCH α configured under sidelink greater than R16 or R17 PSFCH .

[0232] It should be understood that Formula 3 only provides one method for determining the first power based on the number N of PRBs occupied by the PSFCH in the frequency domain, the first parameter, and the second parameter. In other embodiments, the first power may also be determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the first parameter, and the second parameter. For example, the first power may be determined based on the number N of PRBs; or based on the number N of PRBs and the first parameter. This is not limited in the present disclosure.

[0233] In some embodiments, the first power may be determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and a proportional coefficient K. K is an integer greater than 1, or a decimal greater than 1.

[0234] In some embodiments, the first power can be determined by Formula 4. PSFCH，one =K[P 0，PSFCH +10log 10 (2 μ ×N)+α PSFCH PL] ...Formula 4

[0235] It can be seen that the transmit power of the PSFCH can be increased by taking different values ​​of K. It should be understood that Formula 4 only provides one method for determining the first power based on the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and K. In other embodiments, the first power can also be determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and K. For example, the first power can be determined based on the number N of PRBs; or the first power can be determined based on the number N of PRBs and K, etc. This is not limited in this disclosure.

[0236] It is understandable that the transmit power obtained by the above formulas 1, 2, 3 and 4 is the transmit power of one PSFCH. When the first terminal transmits multiple PSFCHs, the transmit power of each PSFCH can be calculated using any of the above methods.

[0237] In some embodiments, the sum of the first powers of multiple PSFCHs transmitted simultaneously on the time-frequency resource should be less than or equal to the maximum transmit power. The maximum transmit power is pre-configured by the network device or pre-defined by the terminal. The maximum transmit power is greater than the maximum transmit power corresponding to FR1, or the maximum transmit power is greater than the maximum transmit power corresponding to FR2.

[0238] For example, the maximum transmit power can be denoted as Pcmax. This Pcmax can be pre-defined by the terminal or pre-configured by the network device. In other words, the maximum upper limit of the sum of the first powers of multiple PSFCHs transmitted simultaneously on the time-frequency resource can be pre-defined by the terminal or pre-configured by the network device.

[0239] For another example, the maximum transmit power corresponding to FR1 or the maximum transmit power corresponding to FR2 may have a value range of [-33, 33] dBm, while the value range of Pcmax on FR2-2 may be [-33, 40] dBm.

[0240] In some embodiments, Pcmax may be predefined based on resource pool configuration.

[0241] In some embodiments, Pcmax may be predefined based on the BWP configuration.

[0242] In some embodiments, the SL PSFCH format 0 sequence is repeatedly transmitted on each of the N PRBs.

[0243] For example, when the first terminal implements PSFCH coverage enhancement by occupying N PRBs in the frequency domain, the SL PSFCH formate 0 sequence can be repeatedly transmitted on each PRB in the N PRBs. For example, the SL PSFCH formate 0 sequence is reused, and the PSFCH formate 0 sequence with a sequence length of 12 is repeatedly transmitted in each PRB in the N PRBs.

[0244] In some embodiments, the SL PSFCH formate 0 sequence is repeatedly transmitted on each of the N PRBs based on a phase offset value.

[0245] For example, when the first terminal implements PSFCH coverage enhancement by occupying N PRBs in the frequency domain, the SL PSFCH formate 0 sequence can be repeatedly transmitted on each PRB in the N PRBs based on the phase offset value. For example, the SL PSFCH formate 0 sequence is reused, and a PSFCH formate 0 sequence with a sequence length of 12 is repeatedly transmitted in each PRB in the N PRBs. However, the PSFCH formate 0 sequence is modulated by 1 phase offset value on each PRB.

[0246] In some embodiments, different PRBs in the N PRBs correspond to a phase offset value respectively.

[0247] For example, a dedicated phase offset value can be modulated for each PRB, and each PRB corresponds to a phase offset value. Different PRBs correspond to different phase offset values, that is, the PSFCH sequence on each PRB is multiplied by e j×n×γ .

[0248] For example, the phase offset value can be expressed as n×γ. Where n ranges from 0 to N-1. j represents the imaginary unit, and γ represents the basic unit of phase offset. For example, the phase offset of the PSFCH sequence s(n) modulated on the first PRB is s(n)×e j×0×γ ; The phase offset of the PSFCH sequence modulation on the second PRB is s(n)×e j×1×γ ; The phase offset of the PSFCH sequence modulation on the third PRB is s(n)×e j×2×γ ,etc.

[0249] In some embodiments, the first sequence is transmitted on N PRBs, and the sequence length of the first sequence is N times the length of the SL PSFCH formate 0 sequence.

[0250] For example, when the first terminal achieves PSFCH coverage enhancement by occupying N PRBs in the frequency domain, the first sequence can be transmitted on the N PRBs. The sequence length of the first sequence can be equal to N times the length of the SL PSFCH formate 0 sequence. In other words, a first sequence with a length of N times the SL PSFCH formate 0 sequence is directly defined. The first terminal can directly transmit the first sequence on the N PRBs.

[0251] For example, the first sequence may be considered as a newly designed PSFCH sequence. The length of the newly designed PSFCH sequence may be 12×N. The newly designed PSFCH sequence is mapped to 12×N resource elements (REs) of N PRBs occupied by one PSFCH.

[0252] For example, assuming that the PSFCH occupies 5 PRBs in the frequency domain, the sequence length of the first sequence may be 60. That is, the PSFCH is mapped to 60 REs in the frequency domain.

[0253] In some embodiments, the generation of the SL PSFCH formate 0 sequence may refer to Formula 5.

[0254] Where w represents the number of REs in the PRBs occupied by PSFCH. Typically, 1 PRB contains 12 REs. δ = 0, the sequence group u and sequence number v depend on the sequence hopping. W is It is expressed as the number of subcarriers in one PRB.

[0255] In some embodiments, the sequence group u can be determined by Formula 6. u=(f gh +f ss )mod 30…Formula 6

[0256] Among them, f gh Expressed as frequency domain1,f ss Represented in the frequency domain2.

[0257] In some embodiments, the cyclic shift z may be determined by Equation 7.

[0258] Wherein, l=0, l' is the index of the OFDM symbol in the time slot corresponding to the second OFDM symbol sent by the PSFCH in the time slot where the PSFCH is located. u=w ID mod 30, v = 0. w ID It can be determined by the high-level parameter sl-PSFCH-HopID. If this parameter is not configured, u=0. m0 and m cs Please refer to Table 1 for confirmation.

[0259] Table 1

[0260] in, Indicates the number of RE, m cs According to the difference of m0, m0 is the initial value of the cyclic shift, m cs equal Represents the logarithm of the cyclic shift, and its value is {1,2,3,6}.

[0261] m in the above formula 7 int represents the initial sequence, w cs represents the number of cyclic shifts, Represents a random value.

[0262] It can be seen from the above embodiments that the present disclosure can increase the coverage of PSFCH by increasing the transmit power of PSFCH. When N is 1 in the above formulas 1 to 4, it means that only the transmit power of PSFCH may be increased, or the time domain resources occupied by PSFCH may be increased and the transmit power of PSFCH may be increased. When N is an integer greater than 1, it means that the frequency domain resources occupied by PSFCH may be increased and the transmit power of PSFCH may be increased, or the frequency domain resources occupied by PSFCH may be increased, the time domain resources occupied by PSFCH may be increased, and the transmit power of PSFCH may be increased. Among them, the above formulas 1 to 4 do not yet reflect whether the time domain resources occupied by PSFCH are increased.

[0263] It can be understood that the present disclosure can achieve increased PSFCH coverage by increasing the time domain resources and frequency domain resources occupied by the PSFCH and increasing the transmission power of the PSFCH in any one or more ways.

[0264] The power headroom reporting method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2102. For example, step S2101 may be implemented as an independent embodiment, but is not limited thereto.

[0265] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0266] FIG3 is a flow chart of a PSFCH communication method according to an exemplary embodiment. As shown in FIG3 , the present disclosure embodiment relates to a PSFCH communication method, which can be executed on a first terminal. The method includes:

[0267] Step S3101: Determine the time-frequency resources occupied by the PSFCH.

[0268] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0269] In some embodiments, the time-frequency resources occupied by the PSFCH include: occupying N consecutive PRBs in the frequency domain, where N is an integer greater than or equal to 1; or occupying N discontinuous PRBs in the frequency domain.

[0270] In some embodiments, N is related to the subcarrier spacing.

[0271] In some embodiments, N is related to the subcarrier spacing, including: the larger the subcarrier spacing, the smaller N; or, the larger the subcarrier spacing, the larger N.

[0272] In some embodiments, N is a fixed value or a value in a set of first values, and N is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on the first DCI indication; based on the first SCI indication.

[0273] In some embodiments, the time-frequency resources occupied by the PSFCH include: occupying H consecutive symbols in the time domain, except AGC symbols and GP symbols, where H is an integer greater than or equal to 1; or, occupying H discontinuous symbols in the time domain, except AGC symbols and GP symbols.

[0274] In some embodiments, H is related to the subcarrier spacing.

[0275] In some embodiments, H is related to the subcarrier spacing, including: the larger the subcarrier spacing, the larger H; or, the larger the subcarrier spacing, the smaller H.

[0276] In some embodiments, H is less than or equal to a maximum number of consecutive symbols, where the maximum number of consecutive symbols is related to the subcarrier spacing, or the maximum number of consecutive symbols is a preconfigured value.

[0277] In some embodiments, H is a fixed value or a value in a set of second values, and H is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on a second DCI indication; based on a second SCI indication.

[0278] In some embodiments, the maximum number of consecutive symbols is a fixed value or a value in a set of third values, and the maximum number of consecutive symbols is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on a third DCI indication; based on a third SCI indication.

[0279] Step S3102: Send PSFCH based on time-frequency resources.

[0280] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0281] In some embodiments, sending the PSFCH based on the time-frequency resources includes: sending the PSFCH using a first power on the time-frequency resources.

[0282] In some embodiments, the first power is determined based on at least one of the number N of PRBs occupied by PSFCH in the frequency domain, the second power and a power offset value, wherein the second power is the transmit power when 1 PSFCH occupies 1 PRB in the frequency domain, and N is an integer greater than or equal to 1.

[0283] In some embodiments, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, a first parameter, and a second parameter, where N is an integer greater than or equal to 1.

[0284] In some embodiments, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and a proportional coefficient K, where K is an integer or a decimal greater than 1.

[0285] In some embodiments, the sum of the first powers of multiple PSFCHs sent simultaneously on the time-frequency resources is less than or equal to the maximum transmit power; wherein the maximum transmit power is pre-configured by the network device or pre-defined by the terminal, and the maximum transmit power is greater than the maximum transmit power corresponding to FR1, or the maximum transmit power is greater than the maximum transmit power corresponding to FR2.

[0286] In some embodiments, the SL PSFCH formate 0 sequence is repeatedly transmitted on each of the N PRBs.

[0287] In some embodiments, the SL PSFCH formate 0 sequence is repeatedly transmitted on each of the N PRBs based on a phase offset value.

[0288] In some embodiments, different PRBs in the N PRBs correspond to a phase offset value respectively.

[0289] In some embodiments, the first sequence is transmitted on N PRBs, and the sequence length of the first sequence is N times the length of the SL PSFCH formate0 sequence.

[0290] FIG4 is a flow chart of another PSFCH communication method according to an exemplary embodiment. As shown in FIG4 , the embodiment of the present disclosure relates to a PSFCH communication method that can be executed on a second terminal. The method includes:

[0291] Step S4101: Determine the time-frequency resources occupied by the PSFCH.

[0292] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0293] In some embodiments, the time-frequency resources occupied by the PSFCH include: occupying N consecutive PRBs in the frequency domain, where N is an integer greater than or equal to 1; or occupying N discontinuous PRBs in the frequency domain.

[0294] In some embodiments, N is related to the subcarrier spacing.

[0295] In some embodiments, N is related to the subcarrier spacing, including: the larger the subcarrier spacing, the smaller N; or, the larger the subcarrier spacing, the larger N.

[0296] In some embodiments, N is a fixed value or a value in a set of first values, and N is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on the first DCI indication; based on the first SCI indication.

[0297] In some embodiments, the time-frequency resources occupied by the PSFCH include: occupying H consecutive symbols in the time domain, except AGC symbols and GP symbols, where H is an integer greater than or equal to 1; or, occupying H discontinuous symbols in the time domain, except AGC symbols and GP symbols.

[0298] In some embodiments, H is related to the subcarrier spacing.

[0299] In some embodiments, H is related to the subcarrier spacing, including: the larger the subcarrier spacing, the larger H; or, the larger the subcarrier spacing, the smaller H.

[0300] In some embodiments, H is less than or equal to a maximum number of consecutive symbols, where the maximum number of consecutive symbols is related to the subcarrier spacing, or the maximum number of consecutive symbols is a preconfigured value.

[0301] In some embodiments, H is a fixed value or a value in a set of second values, and H is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on a second DCI indication; based on a second SCI indication.

[0302] In some embodiments, the maximum number of consecutive symbols is a fixed value or a value in a set of third values, and the maximum number of consecutive symbols is determined in at least one of the following ways: based on resource pool configuration; based on BWP configuration; based on predefined determination; based on a third DCI indication; based on a third SCI indication.

[0303] Step S4102: Receive PSFCH based on time-frequency resources.

[0304] The optional implementation of step S4102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0305] In some embodiments, receiving the PSFCH based on the time-frequency resources includes: receiving the PSFCH sent at a first power on the time-frequency resources.

[0306] In some embodiments, the first power is determined based on at least one of the number N of PRBs occupied by PSFCH in the frequency domain, the second power and a power offset value, wherein the second power is the transmit power when 1 PSFCH occupies 1 PRB in the frequency domain, and N is an integer greater than or equal to 1.

[0307] In some embodiments, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, a first parameter, and a second parameter, where N is an integer greater than or equal to 1.

[0308] In some embodiments, the first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power, and a proportional coefficient K, where K is an integer or a decimal greater than 1.

[0309] In some embodiments, the sum of the first powers of multiple PSFCHs received simultaneously on the time-frequency resources is less than or equal to the maximum transmit power; wherein the maximum transmit power is pre-configured by the network device or pre-defined by the terminal, and the maximum transmit power is greater than the maximum transmit power corresponding to the frequency range FR1, or the maximum transmit power is greater than the maximum transmit power corresponding to FR2.

[0310] In some embodiments, the SL PSFCH formate 0 sequence is repeatedly transmitted on each of the N PRBs.

[0311] In some embodiments, the SL PSFCH formate 0 sequence is repeatedly transmitted on each of the N PRBs based on a phase offset value.

[0312] In some embodiments, different PRBs in the N PRBs correspond to a phase offset value respectively.

[0313] In some embodiments, the first sequence is transmitted on N PRBs, and the sequence length of the first sequence is N times the length of the SL PSFCH formate 0 sequence.

[0314] Next, the present disclosure will describe the above solution with more detailed embodiments.

[0315] In some embodiments, the PSFCH occupies N consecutive or discontinuous PRBs in the frequency domain, where N is an integer ≥ 1. The value of N is a fixed value, or the value of N is related to the subcarrier spacing, such that the larger the subcarrier spacing, the smaller the value of N; or the larger the subcarrier spacing, the larger the value of N.

[0316] In some embodiments, the N value is predefined or preconfigured based on the resource pool / BWP, or is indicated by the DCI or SCI. The N value may be a fixed value, or may be a set of first values.

[0317] In some embodiments, the PSFCH may occupy N PRBs in the frequency domain in the following manner.

[0318] In some embodiments, the existing sidelink PSFCH formate 0 sequence is reused, and the PSFCH formate 0 sequence with a sequence length of 12 is repeatedly transmitted in each of the N PRBs.

[0319] In some embodiments, the existing sidelink PSFCH formate 0 sequence is reused, and a PSFCH formate 0 sequence of length 12 is transmitted in each of the N PRBs, but the PSFCH formate 0 sequence is modulated by 1 phase offset value on each PRB, and the phase offset value is different on each PRB occupied by the PSFCH.

[0320] In some embodiments, a phase offset value n×γ is modulated on each PRB, where n=0, 1, 2, ..., N'-1.

[0321] For example, assuming that PSFCH occupies 5 PRBs in the frequency domain, the phase offset of the PSFCH sequence is modulated on the first PRB, i.e., s(n)×e j×0×γ , modulate the phase offset of the PSFCH sequence on the second PRB, that is, s(n)×e j×1×γ , modulate the phase offset of the PSFCH sequence on the third PRB, that is, s(n)×e j×2×γ , the phase offset of the PSFCH sequence modulation on the fourth PRB is s(n)×e j×3×γ , modulate the phase offset of the PSFCH sequence on the fifth PRB, that is, s(n)×e j×4×γ .

[0322] In some embodiments, a new PSFCH sequence, namely the first sequence described above, is designed. The first sequence length is 12×N, where N is the number of PRBs occupied by a PSFCH in the frequency domain. The first sequence is mapped to 12×N REs in the N PRBs occupied by a PSFCH.

[0323] For example, the PSFCH occupies 5 consecutive PRBs in the frequency domain, and the length of the first sequence is 60, and the PSFCH frequency domain is mapped to 60 REs.

[0324] In some embodiments, the PSFCH occupies H consecutive or discontinuous symbols in the time domain, excluding AGC symbols and GP symbols, where H is an integer greater than or equal to 1.

[0325] In some embodiments, the H value is related to the subcarrier spacing. The larger the subcarrier spacing, the larger the H value; or, the larger the subcarrier spacing, the smaller the H value.

[0326] In some embodiments, the value of H cannot exceed Hmax, that is, H≤Hmax. Hmax is related to the subcarrier spacing. The larger the subcarrier spacing, the larger Nmax; or the larger the subcarrier spacing, the smaller Nmax.

[0327] In some embodiments, the H value is predefined based on the resource pool / BWP, or indicated by the DCI or SCI. The H value may be a fixed value, or the H value may be a value in a set of second values.

[0328] In some embodiments, the PSFCH time-frequency domain structure of R16 / R17 is reused (i.e., it occupies 1 PRB in the frequency domain and only occupies 1 symbol in 1 time slot in the time domain except for AGC and GP symbols), but the transmission power of PSFCH is higher than the power value calculated according to Formula 1 specified in R16 / R17.

[0329] In some embodiments, the following is used to determine:

[0330] In some embodiments, the power of one PSFCH transmission is calculated using Formula 2, where β is an offset value and is a number greater than 0.

[0331] In some embodiments, β is a value predefined or preconfigured based on a resource pool or BWP for power control in FR2-2.

[0332] In some embodiments, Formula 1 represents the transmit power when one PSFCH occupies one physical resource block (PRB) in the frequency domain and one symbol in the time domain, excluding AGC symbols and GP symbols.

[0333] In some embodiments, the power of one PSFCH transmission is calculated using Formula 3, where P' 0，PSFCH and α' PSFCH This is the value configured in FR2-2. It is larger than the P value of the existing R16 / R17 sidelink. 0，PSFCH and α PSFCH Configuration value.

[0334] In some embodiments, the power of one PSFCH transmission is calculated using Formula 4: Wherein, K is a number greater than 1.

[0335] In some embodiments, the transmit power of the PSFCH is a predefined or preconfigured value based on a resource pool or a BWP.

[0336] In some embodiments, the maximum uplink transmission power Pcmax used for PSFCH power control in FR2-2 is a predefined or preconfigured value, and the Pcmax value in FR2-2 is greater than the Pcmax value in FR1 / FR2.

[0337] In some embodiments, the Pcmax value of FR1 / FR2 is pre-configured and has a value range of [-33, 33] dBm. For example, the Pcmax parameter value on FR2-2 is configured to be [-33, 40] dBm.

[0338] In the embodiments of the present disclosure, each step can be implemented as an independent embodiment. Part or all of the steps and their optional implementations can be arbitrarily combined with part or all of the steps in other embodiments, or with optional implementations of other embodiments.

[0339] The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods. For example, a PSFCH communication apparatus is provided, wherein the apparatus includes units or modules for implementing each step performed by the first terminal in any of the above methods. For another example, another PSFCH communication apparatus is provided, wherein the apparatus includes units or modules for implementing each step performed by the second terminal in any of the above methods.

[0340] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0341] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0342] Figure 5a is a schematic diagram of a PSFCH communication device according to an exemplary embodiment. As shown in Figure 5a, the PSFCH communication device 5100 can be, for example, the first device mentioned above. The device 5100 includes: a transceiver module 5101, a processing module 5102, etc. In some embodiments, the transceiver module 5101 is used to send the PSFCH. Optionally, the transceiver module 5101 is used to perform the communication steps S2102 such as sending and / or receiving performed by the first terminal in any of the above methods, but is not limited to this and will not be repeated here. Optionally, the processing module 5102 is used to perform the other steps S2101 performed by the first terminal in any of the above methods, but is not limited to this and will not be repeated here.

[0343] Figure 5b is a schematic diagram of another PSFCH communication device according to an exemplary embodiment. As shown in Figure 5b, the PSFCH communication device 5200 can be, for example, the second device mentioned above. The device 5200 includes: a transceiver module 5201, a processing module 5202, etc. In some embodiments, the transceiver module 5201 is used to receive the PSFCH. Optionally, the transceiver module 5201 is used to perform the communication steps S2102 such as sending and / or receiving performed by the second terminal in any of the above methods, but is not limited to this and will not be repeated here. Optionally, the processing module 5202 is used to perform the other steps S2101 performed by the second terminal in any of the above methods, but is not limited to this and will not be repeated here.

[0344] Figure 6a is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal implementing any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0345] As shown in Figure 6a, the communication device 6100 includes one or more processors 6101. Processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The communication device 6100 is used to perform any of the above methods.

[0346] In some embodiments, the communication device 6100 further includes one or more memories 6102 for storing instructions. Optionally, all or part of the memories 6102 may be located outside the communication device 6100.

[0347] In some embodiments, the communication device 6100 further includes one or more transceivers 6103. When the communication device 6100 includes one or more transceivers 6103, the transceiver 6103 performs the communication steps S2102 of the above method, such as sending and / or receiving, but is not limited thereto. The processor 6101 performs other steps S2101, but is not limited thereto.

[0348] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0349] In some embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6102. The interface circuit 6104 may be configured to receive signals from the memory 6102 or other devices, and may be configured to send signals to the memory 6102 or other devices. For example, the interface circuit 6104 may read instructions stored in the memory 6102 and send the instructions to the processor 6101.

[0350] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0351] FIG6b is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6b , but the present disclosure is not limited thereto.

[0352] The chip 6200 includes one or more processors 6201 , and the chip 6200 is configured to execute any of the above methods.

[0353] In some embodiments, the chip 6200 further includes one or more interface circuits 6202. Optionally, the interface circuit 6202 is connected to the memory 6203. The interface circuit 6202 can be used to receive signals from the memory 6203 or other devices, and can be used to send signals to the memory 6203 or other devices. For example, the interface circuit 6202 can read instructions stored in the memory 6203 and send the instructions to the processor 6201.

[0354] In some embodiments, the interface circuit 6202 performs the communication step S2102 of sending and / or receiving in the above method, but is not limited thereto. The processor 6201 performs other steps S2101, but is not limited thereto.

[0355] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0356] In some embodiments, the chip 6200 further includes one or more memories 6203 for storing instructions. Alternatively, all or part of the memories 6203 may be located outside the chip 6200.

[0357] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0358] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0359] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0360] The present disclosure enhances the coverage of the PSFCH by time domain expansion or frequency domain expansion, or by directly configuring a higher PSFCH power.

Claims

1. A physical side link feedback channel PSFCH communication method, characterized in that: The method comprises: Determine the time and frequency resources occupied by PSFCH; The PSFCH is sent based on the time-frequency resources.

2. The method according to claim 1, characterized in that: The time-frequency resources occupied by the PSFCH include: Occupying N consecutive physical resource blocks (PRBs) in the frequency domain, where N is an integer greater than or equal to 1; or Occupies N non-contiguous PRBs in the frequency domain.

3. The method according to claim 2, characterized in that The N is related to the subcarrier spacing.

4. The method according to claim 3, characterized in that The N is related to the subcarrier spacing and includes: The larger the subcarrier spacing, the smaller N; or, The larger the subcarrier spacing, the larger N.

5. The method according to any one of claims 2 to 4, characterized in that: The N is a fixed value or a value in a set of first values, and the N is determined in at least one of the following ways: Determined based on resource pool configuration; Determined based on partial bandwidth BWP configuration; Based on predefined determination; Based on the first downlink control information DCI indication; Based on the first side link control information SCI indication.

6. The method according to claim 1, characterized in that The time-frequency resources occupied by the PSFCH include: occupying H consecutive symbols in the time domain except the automatic gain control AGC symbol and the guard interval GP symbol, wherein H is an integer greater than or equal to 1; or, In the time domain, except for the AGC symbol and the GP symbol, H discontinuous symbols are occupied.

7. The method according to claim 6, characterized in that The H is related to the subcarrier spacing.

8. The method according to claim 7, characterized in that The H is related to the subcarrier spacing and includes: The larger the subcarrier spacing, the larger the H; or, The larger the subcarrier spacing, the smaller the H.

9. The method according to any one of claims 6 to 8, characterized in that: The H is less than or equal to a maximum number of consecutive symbols, wherein the maximum number of consecutive symbols is related to the subcarrier spacing, or the maximum number of consecutive symbols is a preconfigured value.

10. The method according to any one of claims 6 to 9, characterized in that: The H is a fixed value or a value in a set of second values, and the H is determined in at least one of the following ways: Determined based on resource pool configuration; Determined based on BWP configuration; Based on predefined determination; Based on a second DCI indication; Based on the second SCI indication.

11. The method according to claim 9, characterized in that The maximum number of consecutive symbols is a fixed value or a value in a set of third values, and the maximum number of consecutive symbols is determined in at least one of the following ways: Determined based on resource pool configuration; Determined based on BWP configuration; Based on predefined determination; Based on a third DCI indication; Based on the third SCI indication.

12. The method according to any one of claims 1 to 11, characterized in that: The sending the PSFCH based on the time-frequency resource includes: The PSFCH is sent using a first power on the time-frequency resources.

13. The method according to claim 12, characterized in that The first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power and a power offset value, wherein the second power is the transmit power when one PSFCH occupies one PRB in the frequency domain, and N is an integer greater than or equal to 1.

14. The method according to claim 12, characterized in that The first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, a first parameter, and a second parameter, wherein N is an integer greater than or equal to 1.

15. The method according to claim 12, characterized in that The first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power and a proportional coefficient K, wherein K is an integer or a decimal greater than 1.

16. The method according to claim 12, characterized in that The sum of first powers of multiple PSFCHs simultaneously transmitted on the time-frequency resource is less than or equal to the maximum transmit power; The maximum transmit power is pre-configured by the network device or pre-defined by the terminal, and the maximum transmit power is greater than the maximum transmit power corresponding to the frequency range FR1, or the maximum transmit power is greater than the maximum transmit power corresponding to FR2.

17. The method according to any one of claims 2 to 5, characterized in that: On each of the N PRBs, the transmission side link SL PSFCH format formate 0 sequence is repeated.

18. The method according to any one of claims 2 to 5, characterized in that: On each of the N PRBs, the SL PSFCH formate 0 sequence is repeatedly transmitted based on a phase offset value.

19. The method according to claim 18, characterized in that Different PRBs in the N PRBs respectively correspond to one phase offset value.

20. The method according to any one of claims 2 to 5, characterized in that: A first sequence is transmitted on the N PRBs, where a sequence length of the first sequence is N times the length of an SL PSFCH formate 0 sequence.

21. A physical side link feedback channel PSFCH communication method, characterized in that: The method comprises: Determine the time and frequency resources occupied by PSFCH; The PSFCH is received based on the time-frequency resources.

22. The method according to claim 21, characterized in that The time-frequency resources occupied by the PSFCH include: Occupying N consecutive physical resource blocks (PRBs) in the frequency domain, where N is an integer greater than or equal to 1; or Occupies N non-contiguous PRBs in the frequency domain.

23. The method according to claim 22, characterized in that The N is related to the subcarrier spacing.

24. The method according to claim 23, characterized in that The N is related to the subcarrier spacing and includes: The larger the subcarrier spacing, the smaller N; or, The larger the subcarrier spacing, the larger N.

25. The method according to any one of claims 22 to 24, characterized in that: The N is a fixed value or a value in a set of first values, and the N is determined in at least one of the following ways: Determined based on resource pool configuration; Determined based on partial bandwidth BWP configuration; Based on predefined determination; Based on the first downlink control information DCI indication; Based on the first side link control information SCI indication.

26. The method according to claim 21, characterized in that The time-frequency resources occupied by the PSFCH include: occupying H consecutive symbols in the time domain except the automatic gain control AGC symbol and the guard interval GP symbol, wherein H is an integer greater than or equal to 1; or, In the time domain, except for the AGC symbol and the GP symbol, H discontinuous symbols are occupied.

27. The method according to claim 26, characterized in that The H is related to the subcarrier spacing.

28. The method according to claim 27, characterized in that The H is related to the subcarrier spacing and includes: The larger the subcarrier spacing, the larger the H; or, The larger the subcarrier spacing, the smaller the H.

29. The method according to any one of claims 26 to 28, characterized in that: The H is less than or equal to a maximum number of consecutive symbols, wherein the maximum number of consecutive symbols is related to the subcarrier spacing, or the maximum number of consecutive symbols is a preconfigured value.

30. The method according to any one of claims 26 to 29, characterized in that: The H is a fixed value or a value in a set of second values, and the H is determined in at least one of the following ways: Determined based on resource pool configuration; Determined based on BWP configuration; Based on predefined determination; Based on a second DCI indication; Based on the second SCI indication.

31. The method according to claim 29, characterized in that The maximum number of consecutive symbols is a fixed value or a value in a set of third values, and the maximum number of consecutive symbols is determined in at least one of the following ways: Determined based on resource pool configuration; Determined based on BWP configuration; Based on predefined determination; Based on a third DCI indication; Based on the third SCI indication.

32. The method according to any one of claims 21 to 31, characterized in that: The receiving the PSFCH based on the time-frequency resource includes: The PSFCH sent with a first power is received on the time-frequency resources.

33. The method according to claim 32, characterized in that The first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power and a power offset value, wherein the second power is the transmit power when one PSFCH occupies one PRB in the frequency domain, and N is an integer greater than or equal to 1.

34. The method according to claim 32, characterized in that The first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, a first parameter, and a second parameter, wherein N is an integer greater than or equal to 1.

35. The method according to claim 32, characterized in that The first power is determined based on at least one of the number N of PRBs occupied by the PSFCH in the frequency domain, the second power and a proportional coefficient K, wherein K is an integer or a decimal greater than 1.

36. The method according to claim 32, characterized in that The sum of first powers of multiple PSFCHs simultaneously received on the time-frequency resource is less than or equal to the maximum transmit power; The maximum transmit power is pre-configured by the network device or pre-defined by the terminal, and the maximum transmit power is greater than the maximum transmit power corresponding to the frequency range FR1, or the maximum transmit power is greater than the maximum transmit power corresponding to FR2.

37. The method according to any one of claims 22 to 25, characterized in that: On each of the N PRBs, the transmission side link SL PSFCH format formate 0 sequence is repeated.

38. The method according to any one of claims 22 to 25, characterized in that: On each of the N PRBs, the SL PSFCH formate 0 sequence is repeatedly transmitted based on a phase offset value.

39. The method according to claim 38, characterized in that Different PRBs in the N PRBs respectively correspond to one phase offset value.

40. The method according to any one of claims 22 to 25, characterized in that A first sequence is transmitted on the N PRBs, where a sequence length of the first sequence is N times the length of an SL PSFCH formate 0 sequence.

41. A physical side link feedback channel PSFCH communication method, characterized in that: The method comprises: The first terminal determines the time-frequency resources occupied by the PSFCH; The first terminal sends the PSFCH based on the time-frequency resources; The second terminal receives the PSFCH based on the time-frequency resources.

42. A first terminal, characterized in that: include: Processing module and transceiver module; The processing module is used to determine the time-frequency resources occupied by the PSFCH; The transceiver module is used to send the PSFCH based on the time-frequency resources.

43. A second terminal, characterized in that: include: Processing module and transceiver module; The processing module is used to determine the time-frequency resources occupied by the PSFCH; The transceiver module is used to receive the PSFCH based on the time-frequency resources.

44. A first terminal, characterized in that: include: one or more processors; Wherein, the first terminal is used to execute the physical side link feedback channel PSFCH communication method described in any one of claims 1-20.

45. A second terminal, characterized in that: include: one or more processors; Wherein, the second terminal is used to execute the physical side link feedback channel PSFCH communication method described in any one of claims 21-40.

46. ​​A communication system, characterized in that: It includes a first terminal and a second terminal, wherein the first terminal is configured to implement the physical side link feedback channel PSFCH communication method described in any one of claims 1-20, and the second terminal is configured to implement the physical side link feedback channel PSFCH communication method described in any one of claims 21-40.

47. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device executes the physical side link feedback channel PSFCH communication method as described in any one of claims 1-20 or 21-40.

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