WO2025035335A1 - 侧链路通信方法、终端及存储介质 - Google Patents

侧链路通信方法、终端及存储介质 Download PDF

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Publication number
WO2025035335A1
WO2025035335A1 PCT/CN2023/112771 CN2023112771W WO2025035335A1 WO 2025035335 A1 WO2025035335 A1 WO 2025035335A1 CN 2023112771 W CN2023112771 W CN 2023112771W WO 2025035335 A1 WO2025035335 A1 WO 2025035335A1
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WIPO (PCT)
Prior art keywords
psfch
psfchs
power
sent
carrier
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PCT/CN2023/112771
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English (en)
French (fr)
Inventor
赵群
赵文素
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to CN202380010638.0A priority Critical patent/CN119923935A/zh
Priority to PCT/CN2023/112771 priority patent/WO2025035335A1/zh
Publication of WO2025035335A1 publication Critical patent/WO2025035335A1/zh
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a side link communication method, a terminal, and a storage medium.
  • PSCCH physical sidelink control channels
  • PSSCH physical sidelink shared channels
  • the embodiments of the present disclosure provide a side link communication method, a terminal, and a storage medium.
  • a side link communication method comprising: using a first power to send a side link feedback channel PSFCH corresponding to multiple carriers, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • a side link communication method comprising: receiving a side link feedback channel PSFCH corresponding to multiple carriers transmitted using a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • a side link communication method comprising: a first terminal sends a side link feedback channel PSFCH corresponding to multiple carriers using a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power; and a second terminal receives the PSFCHs corresponding to the multiple carriers sent by the first terminal using the first power.
  • a first terminal comprising: a transceiver module; the transceiver module is used to send a side link feedback channel PSFCH corresponding to multiple carriers using a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • a second terminal comprising: a transceiver module; the transceiver module is used to receive a side link feedback channel PSFCH corresponding to multiple carriers transmitted using a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • a first terminal comprising: one or more processors; wherein the first terminal is used to execute the first aspect and any one of the side link communication methods in the first aspect.
  • a second terminal comprising: one or more processors; wherein the second terminal is used to execute the second aspect and any one of the side link communication methods in the second aspect.
  • a communication system comprising a first terminal and a second terminal, wherein the first terminal is configured to implement the first aspect and any one of the side link communication methods in the first aspect, and the second terminal is configured to implement the second aspect and any one of the side link communication methods in the second aspect.
  • a storage medium which stores instructions.
  • the communication device executes a side link communication method such as the first aspect and any one of the items in the first aspect or the second aspect and any one of the items in the second aspect.
  • the present disclosure can send PSFCHs corresponding to multiple carriers through a first power, thereby sending a corresponding number of PSFCHs according to an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • FIG1 is a schematic diagram of a communication system architecture according to an embodiment of the present disclosure.
  • FIG2 is a schematic diagram of an interaction of a side link communication method according to an embodiment of the present disclosure.
  • Fig. 3a is a flow chart of a side link communication method according to an exemplary embodiment.
  • Fig. 3b is a flow chart of another side link communication method according to an exemplary embodiment.
  • Fig. 4 is a flow chart of yet another side link communication method according to an exemplary embodiment.
  • Fig. 5 is a flow chart of yet another side link communication method according to an exemplary embodiment.
  • Fig. 6a is a schematic diagram of a side link communication device according to an exemplary embodiment.
  • Fig. 6b is a schematic diagram of another side link communication device according to an exemplary embodiment.
  • Fig. 7a is a schematic diagram of a communication device according to an exemplary embodiment.
  • Fig. 7b is a schematic diagram of a chip according to an exemplary embodiment.
  • the embodiments of the present disclosure provide a side link communication method, a terminal, and a storage medium.
  • an embodiment of the present disclosure proposes a side link communication method, which is executed by a first terminal, and the method includes: using a first power to send a side link feedback channel PSFCH corresponding to multiple carriers, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • the PSFCHs corresponding to multiple carriers have y1 PSFCHs to be sent; the method also includes: if the total transmission power of the y1 PSFCHs to be sent is greater than a pre-set first maximum transmission power, power adjustment is performed on the y1 PSFCHs to be sent or the PSFCHs are discarded to obtain y2 PSFCHs, wherein the total transmission power of the y2 PSFCHs is the first power, and y2 is less than or equal to y1.
  • the power of y1 PSFCHs to be transmitted can be adjusted or discarded, so that the terminal can transmit a corresponding number of PSFCHs at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • the method also includes: determining y3 PSFCHs to be sent, where y3 is greater than a first threshold; based on the priorities corresponding to the PSFCHs, discarding the PSFCHs with the lowest priority in turn from the y3 PSFCHs to be sent, to obtain y1 PSFCHs to be sent, where y1 is less than or equal to the first threshold.
  • part of the PSFCHs can be discarded, so that the terminal can send a corresponding number of PSFCHs at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • At least one bandwidth corresponding to sending PSFCH corresponds to a second threshold respectively, and the sum of the second thresholds corresponding to each bandwidth is equal to the first threshold, wherein the bandwidth includes at least one of a frequency band and a carrier, and each frequency band includes at least one carrier.
  • thresholds in various dimensions are provided to be applicable to various scenarios.
  • the second threshold is the maximum number of PSFCHs corresponding to the Rth bandwidth, where R is a positive integer; based on the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the y3 PSFCHs to be sent, and y1 PSFCHs to be sent are obtained, including: according to the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the PSFCHs to be sent corresponding to the Rth bandwidth, until the number of PSFCHs corresponding to the Rth bandwidth is less than or equal to the maximum number of PSFCHs corresponding to the Rth bandwidth, and y4 PSFCHs to be sent corresponding to the Rth bandwidth are obtained; wherein, among all the bandwidths occupied by sending PSFCH, the sum of y4 corresponding to each bandwidth is equal to y1.
  • the power of PSFCH can be adjusted and/or discarded for each bandwidth separately, so as to determine the appropriate power to send the corresponding number of PSFCHs on different bandwidths, thereby improving the side link communication efficiency.
  • the first threshold is determined based on terminal capabilities of the terminal itself.
  • the terminal can determine the first threshold for sending different bandwidths occupied by PSFCHs corresponding to multiple carriers according to its own terminal capabilities, so as to be applicable to terminals with different capabilities.
  • power adjustment or PSFCH discarding is performed on y1 PSFCHs to be sent, including: if the total transmission power of the PSFCH to be sent corresponding to the R-th bandwidth is greater than the second maximum transmission power corresponding to the R-th bandwidth, power adjustment or PSFCH discarding is performed on the PSFCH to be sent corresponding to the R-th bandwidth; wherein, in all bandwidths occupied by sending PSFCH, the sum of the second maximum transmission powers corresponding to each bandwidth is equal to the first maximum transmission power; the second maximum transmission power is based on high-level signaling configuration, or the second maximum transmission power is determined based on the total transmission power of the PSFCH to be sent corresponding to all bandwidths, the total transmission power of the PSFCH to be sent corresponding to the R-th bandwidth and the first maximum transmission power, and R is a positive integer.
  • power control may be performed for the corresponding maximum transmission power on different bandwidths, thereby implementing PSFCH power adjustment and/or discarding for different bandwidths to achieve more accurate side link communication.
  • the bandwidth includes a frequency band
  • the total transmit power of the PSFCH corresponding to the Wth frequency band is determined based on the total transmit power of the PSFCH corresponding to each carrier in the Wth frequency band, where W is a positive integer.
  • a method for determining the total transmission power of a frequency band is provided, so as to transmit the PSFCH on the frequency band based on the transmission power, thereby improving the side link communication efficiency.
  • the method further includes: discarding all PSFCHs to be sent on a specific carrier, wherein the specific carrier is a carrier in the Wth frequency band that satisfies the first condition, and W is a positive integer; the first condition includes at least one of the following: sending multiple PSFCHs simultaneously; Carrier restrictions; Carrier combination requirements; RF retuning time restrictions.
  • a plurality of ways to determine whether to discard the PSFCH to be sent on a specific carrier are provided, so as to be applicable to discarding the PSFCH to be sent on multiple carriers in a variety of different scenarios, so as to achieve more accurate side link communication.
  • the first condition includes the restriction of sending multiple carriers simultaneously; discarding all PSFCHs to be sent on a specific carrier includes: according to the priority of the PSFCHs to be sent in the carrier, discarding the PSFCHs corresponding to the carriers with the lowest priority of the PSFCHs to be sent from the Wth frequency band in sequence; until the number of carriers in the Wth frequency band is less than or equal to the number of carriers with the restriction of sending multiple carriers simultaneously.
  • a method of discarding the PSFCH to be transmitted on a specific carrier in the case of restriction on simultaneously transmitting multiple carriers is provided to achieve more accurate side link communication.
  • the power of a part of the PSFCH transmissions may be reduced and/or discarded to ensure that the terminal can send a corresponding number of PSFCHs at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • the terminal may determine, based on its own implementation, to reduce the power of and/or discard one or more PSFCHs of the same priority level to achieve more efficient side link communication.
  • the PSFCH corresponding to the primary carrier or the default carrier is not power reduced and/or discarded.
  • power reduction and/or discarding may not be performed on some carriers, thereby ensuring that the PSFCH on the corresponding carrier can be sent, thereby improving the efficiency and accuracy of side link communications.
  • y2 is equal to y1; the total transmission power of the PSFCH corresponding to the x-th carrier is determined by the number of PSFCHs corresponding to the x-th carrier and the PSFCH transmission power corresponding to the x-th carrier, where x is a positive integer, and the PSFCH transmission power corresponding to the x-th carrier represents the transmission power of a single PSFCH on the x-th carrier. It can be understood that the x-th carrier is one of the multiple carriers transmitted by the terminal.
  • the terminal can reduce the power of all PSFCHs in the carrier so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario without discarding the PSFCH, thereby improving the side link communication efficiency.
  • the PSFCH transmit power corresponding to the x-th carrier is determined based on the first PSFCH transmit power and the second PSFCH transmit power; wherein, the first PSFCH transmit power indicates that the terminal determines the transmit power of a single PSFCH on the x-th carrier, the second PSFCH transmit power indicates the configured transmit power of a single PSFCH on the x-th carrier, the first PSFCH transmit power is determined based on the second PSFCH transmit power, the total transmit power of the PSFCH corresponding to the x-th carrier and the first maximum transmit power, and the second PSFCH transmit power is configured by the network device or pre-configured by the terminal.
  • a method for determining the average transmission power of the PSFCH corresponding to the carrier is provided, so that the terminal can perform corresponding power reduction based on the power, and send a corresponding number of PSFCHs based on the power, thereby improving the side link communication efficiency.
  • a side link communication method is provided, which is executed by a second terminal, and the method includes: receiving a side link feedback channel PSFCH corresponding to multiple carriers transmitted using a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • the PSFCH corresponding to multiple carriers has y1 PSFCHs to be sent; the received PSFCHs corresponding to multiple carriers are determined in the following way: if the total transmission power of y1 PSFCHs to be sent is greater than a preset first maximum transmission power, power adjustment is performed on the y1 PSFCHs to be sent or the PSFCHs are discarded to obtain y2 PSFCHs, where the total transmission power of y2 PSFCHs is the first power, and y2 is less than or equal to y1.
  • the PSFCHs corresponding to the received multiple carriers are determined in the following manner: y3 PSFCHs to be sent are determined, where y3 is greater than a first threshold; based on the priority corresponding to the PSFCHs, the PSFCHs with the lowest priority are discarded in turn from the y3 PSFCHs to be sent, to obtain y1 PSFCHs to be sent, where y1 is less than or equal to the first threshold.
  • At least one bandwidth corresponding to sending PSFCH corresponds to a second threshold respectively, and the sum of the second thresholds corresponding to each bandwidth is equal to the first threshold, wherein the bandwidth includes at least one of a frequency band and a carrier, and each frequency band includes at least one carrier.
  • the second threshold is the maximum number of PSFCHs corresponding to the Rth bandwidth, where R is a positive integer; based on the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the y3 PSFCHs to be sent, and y1 PSFCHs to be sent are obtained, including: according to the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the PSFCHs to be sent corresponding to the Rth bandwidth, until the number of PSFCHs corresponding to the Rth bandwidth is less than or equal to the maximum number of PSFCHs corresponding to the Rth bandwidth, and y4 PSFCHs to be sent corresponding to the Rth bandwidth are obtained; wherein, among all the bandwidths occupied by sending PSFCH, the sum of y4 corresponding to each bandwidth is equal to y1.
  • the first threshold is determined based on terminal capabilities of the terminal itself.
  • power adjustment or PSFCH discarding is performed on y1 PSFCHs to be sent, including: if the total transmission power of the PSFCH to be sent corresponding to the R-th bandwidth is greater than the second maximum transmission power corresponding to the R-th bandwidth, power adjustment or PSFCH discarding is performed on the PSFCH to be sent corresponding to the R-th bandwidth; wherein, in all bandwidths occupied by sending PSFCH, the sum of the second maximum transmission powers corresponding to each bandwidth is equal to the first maximum transmission power; the second maximum transmission power is based on high-level signaling configuration, or the second maximum transmission power is determined based on the total transmission power of the PSFCH to be sent corresponding to all bandwidths, the total transmission power of the PSFCH to be sent corresponding to the R-th bandwidth and the first maximum transmission power, and R is a positive integer.
  • the bandwidth includes a frequency band
  • the total transmit power of the PSFCH corresponding to the Wth frequency band is determined based on the total transmit power of the PSFCH corresponding to each carrier in the Wth frequency band, where W is a positive integer.
  • the PSFCHs corresponding to the received multiple carriers are determined in the following manner: discarding all PSFCHs to be sent on a specific carrier, where the specific carrier is a carrier in the Wth frequency band that satisfies the first condition, and W is a positive integer; the first condition includes at least one of the following: restrictions on simultaneous transmission of multiple carriers; carrier combination requirements; and RF retuning time limits.
  • the first condition includes the restriction of sending multiple carriers simultaneously; discarding all PSFCHs to be sent on a specific carrier includes: according to the priority of the PSFCHs to be sent in the carrier, discarding the PSFCHs corresponding to the carriers with the lowest priority of the PSFCHs to be sent from the Wth frequency band in sequence; until the number of carriers in the Wth frequency band is less than or equal to the number of carriers with the restriction of sending multiple carriers simultaneously.
  • the PSFCH corresponding to the primary carrier or the default carrier is not power reduced and/or discarded.
  • y2 is equal to y1; the total transmission power of the PSFCH corresponding to the x-th carrier is determined by the number of PSFCHs corresponding to the x-th carrier and the PSFCH transmission power corresponding to the x-th carrier, where x is a positive integer, and the PSFCH transmission power corresponding to the x-th carrier represents the transmission power of a single PSFCH on the x-th carrier. It can be understood that the x-th carrier is one of the multiple carriers transmitted by the terminal.
  • the PSFCH transmit power corresponding to the x-th carrier is determined based on the first PSFCH transmit power and the second PSFCH transmit power; wherein, the first PSFCH transmit power indicates that the terminal determines the transmit power of a single PSFCH on the x-th carrier, the second PSFCH transmit power indicates the configured transmit power of a single PSFCH on the x-th carrier, the first PSFCH transmit power is determined based on the second PSFCH transmit power, the total transmit power of the PSFCH corresponding to the x-th carrier and the first maximum transmit power, and the second PSFCH transmit power is configured by the network device or pre-configured by the terminal.
  • a side link communication method comprising: a first terminal sends a side link feedback channel PSFCH corresponding to multiple carriers using a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power; and a second terminal receives the PSFCHs corresponding to the multiple carriers sent by the first terminal using the first power.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • a first terminal comprising: a transceiver module; the transceiver module is used to send a side link feedback channel PSFCH corresponding to multiple carriers using a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • a second terminal including: a transceiver module; the transceiver module is used to receive A side link feedback channel PSFCH corresponding to multiple carriers is transmitted with a first power, wherein there is a time domain overlap between the PSFCHs of at least some carriers among the PSFCHs corresponding to the multiple carriers, and the first power is less than or equal to a pre-set first maximum transmission power.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • a first terminal comprising: one or more processors; wherein the first terminal is used to execute the first aspect and any one of the side link communication methods in the first aspect.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • a second terminal comprising: one or more processors; wherein the second terminal is used to execute the second aspect and any one of the side link communication methods in the second aspect.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • a communication system comprising a first terminal and a second terminal, wherein the first terminal is configured to implement the first aspect and any one of the side link communication methods in the first aspect, and the second terminal is configured to implement the second aspect and any one of the side link communication methods in the second aspect.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • a storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes a side link communication method such as the first aspect and any one of the items in the first aspect or the second aspect and any one of the items in the second aspect.
  • the PSFCHs corresponding to multiple carriers can be sent at the first power, so that a corresponding number of PSFCHs can be sent at an appropriate power in a carrier aggregation scenario, thereby improving the side link communication efficiency.
  • the embodiments of the present disclosure propose a program product.
  • 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.
  • 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.
  • the embodiments of the present disclosure provide a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first or second aspect above.
  • 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 used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.
  • the disclosed embodiments provide a side link communication method, a terminal, and a storage medium.
  • the terms side link communication method, information processing method, communication method, etc. can be interchangeable
  • the terms side link communication device, information processing device, communication device, etc. can be interchangeable
  • the terms information processing system, communication system, etc. can be interchangeable.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • 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.
  • 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 of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • elements expressed in the singular form such as “a”, “an”, “the”, “above”, “said”, “aforementioned”, “this”, etc., may mean “one and only one", or “one or more”, “at least one”, etc.
  • the noun after the article may be understood as a singular expression or a plural expression.
  • plurality refers to two or more.
  • the terms "at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • the recording method of "in response to a situation A, in response to another situation B” may include the following technical solutions according to the situation: in some embodiments, A (execute A independently of B); in some embodiments, B (execute B independently of A); in some embodiments, select execution from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed).
  • a branch such as A, B, C, etc.
  • the recording method of "A or B” may include the following technical solutions according to 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).
  • A A is executed independently of B
  • B B is executed independently of A
  • execution is selected from A and B (A and B are selectively executed).
  • 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 restrictions on the position, order, priority, quantity or content of the description objects.
  • the statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes.
  • 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”
  • the "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”.
  • 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”.
  • the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device” as an example, the number of "devices” can be one or more.
  • the objects modified by different prefixes may be the same or different. For example, if the description object is "device”, then the “first device” and the “second device” may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information”, then the "first information” and the “second information” may be the same information or different information, and their contents may be the same or different.
  • “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • 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 lower 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”, “no more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices and equipment may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, “subject”, etc.
  • network can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.
  • access network device may also be referred to as “radio access network device (RAN device)", “base station (BS)”, “radio base station (radio base station)”, “fixed station” and in some embodiments may also be understood as “node”, “access point (access point)”, “transmission point (TP)”, “reception point (RP)”, “transmission and/or reception point (transmission/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 (bandwidth part, BWP)", etc.
  • RAN device radio access network device
  • base station base station
  • RP radio base station
  • TRP transmission and/or reception point
  • terminal or “terminal device” may be referred to as "user equipment (UE)", “user terminal (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.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment. Any combination of elements, rows, or columns may also be implemented as independent embodiments.
  • FIG1 is a schematic diagram of a communication system architecture according to an embodiment of the present disclosure.
  • a communication system 100 includes a terminal 101 and a network device 102 .
  • 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 (Pad), 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 to these.
  • a mobile phone a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), 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
  • the network device 102 may include at least one of an access network device and a core network device.
  • 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 Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (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.
  • eNB evolved Node B
  • ng-eNB next generation evolved Node B
  • gNB next generation Node B
  • NB node
  • the technical solution of the present disclosure may be applicable to the Open RAN architecture.
  • the interfaces between access network devices or within access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.
  • the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit).
  • the CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.
  • the 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 the Evolved Packet Core (EPC), the 5G Core Network (5GCN), and the Next Generation Core (NGC).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • 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.
  • a person of ordinary skill in the art 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.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto.
  • the subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • SUPER 3G IMT-Advanced
  • 4th generation mobile communication system 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 5G new radio NR
  • future radio access FX
  • new radio access technology RAT
  • new radio NR
  • new radio access NX
  • future generation radio access FX
  • GSM Global System for Mobile communications
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access
  • UMB Ultra Mobile Broadband
  • 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) network
  • D2D Device-to-Device
  • M2M Machine-to-Machine
  • IoT Vehicle-to-Everything
  • V2X Vehicle-to-Everything
  • SL LTE sidelink
  • CA carrier aggregation
  • the PSCCH or PSSCH transmissions of multiple carriers overlap in the time domain, and the total transmission power of the multiple carriers exceeds the maximum transmission power determined by the terminal, that is, PCMAX .
  • the transmission on the corresponding carrier with a large priority value can be reduced in power or dropped, and the process is repeated. Until the total transmission power does not exceed PCMAX .
  • PCMAX is determined by the terminal based on its own configuration.
  • the large priority value mentioned above can be considered as the maximum priority value.
  • the terminal can adjust the transmit power of the SL transmission with sidelink control information (SCI).
  • SCI sidelink control information
  • the "priority" field of the SCI can be set to the maximum value of all "priority" values of the overlapping SL transmissions. In this case, the calculation of the adjustment of the SL transmit power is not specified. If the transmit power still exceeds the above-mentioned preset threshold after the power adjustment, the terminal shall discard the SL transmission with the largest "priority" field in its SCI. And repeat the process on the carrier that is not discarded. When the SL transmissions overlapping in the time domain on two or more carriers have the same "priority" field value, it is not specified which SL transmission the terminal adjusts.
  • NTX ,PSFCH Nsch ,T,XPS .
  • NTX ,PSFCH represents the number of PSFCHs actually sent by the terminal
  • Nsch ,TX,PSFCH represents the number of PSFCHs expected to be sent by the terminal.
  • NTX ,PSFCH should be equal to Nsch ,TX,PSFCH .
  • PPSFCH,K (i) PPSFC ,Hone .
  • PPSFCH,k (i) represents the transmit power of K PSFCHs with priority i
  • PPSFCH,one represents the transmit power of one PSFCH determined by the terminal.
  • P PSFCH,one can be obtained by formula 1.
  • P PSFCH,one P 0,PSFCH +10log 10 (2 ⁇ )+ ⁇ PSFCH ⁇ PL ...Formula 1
  • P 0,PSFCH represents the target received power
  • ⁇ represents the corresponding subcarrier spacing (SCS) size
  • ⁇ is the path loss compensation coefficient
  • PL represents the path loss value of the corresponding path loss (PL).
  • the unit of P PSFCH,one can be dBm.
  • Mi can represent the total number of PSFCHs with priority i.
  • K can be The maximum value of. Wherein, i is the priority value, and the smaller the priority value, the higher the priority. It can be determined that the priority value when the maximum number of PSFCHs reaches when the sum of the transmit powers of multiple PSFCHs with priority values less than or equal to i needs to be less than or equal to PCMAX , that is, the K mentioned above.
  • the situation mainly corresponds to when the priority value is less than or equal to K+1, the number of sent PSFCHs exceeds the maximum number supported by the terminal, and when the priority value is less than or equal to K, the number of sent PSFCHs does not exceed the maximum number supported by the terminal.
  • the terminal can still send some of the PSFCHs, and the number of sent PSFCHs does not exceed the maximum number supported by the terminal.
  • the number of multiple PSFCHs that need to be fed back is greater than the maximum number supported by the terminal, and the total transmit power of the terminal is less than or equal to PCMAX .
  • NTX ,PSFCH NMAX ,PSFCH .
  • NMAX ,PSFCH indicates the maximum number of PSFCHs supported by the terminal.
  • the power control parameters for PSFCH can be located in a specific field.
  • the specific field can be SL-ResourcePoolIE. Therefore, it can be considered to be configured for each resource pool.
  • multiple resource pools with overlapping PSFCH resources are fixed. These resource pools The power control parameters in are configured to the same value.
  • the number of PSFCHs to be sent can also be determined.
  • power control parameters for different carriers may be configured to different values.
  • FIG2 is a schematic diagram of a side link communication method interaction according to an embodiment of the present disclosure.
  • the present disclosure embodiment relates to a side link communication method, which is used in a communication system 100, and the method includes:
  • Step S2101 The first terminal determines the PSFCH to be sent and adjusts the PSFCH to be sent.
  • the first terminal may determine a plurality of PSFCHs to be sent and a transmit power required to send the number of PSFCHs.
  • the first terminal may determine whether to adjust the PSFCHs to be sent and the manner in which to adjust the PSFCHs to be sent based on the relationship between the number of PSFCHs to be sent, the transmit power, and the maximum number of transmits and the maximum transmit power supported by the terminal.
  • the multiple PSFCHs that the terminal needs to send are PSFCHs corresponding to multiple carriers.
  • the terminal needs to send there is time domain overlap between the PSFCHs of at least some carriers.
  • the terminal needs to send PSFCHs corresponding to five carriers
  • the PSFCHs corresponding to any two, three, four or five carriers overlap in the time domain.
  • the number of the multiple PSFCHs that the terminal needs to send may be y1, where y1 is less than or equal to the maximum number of PSFCHs that the terminal is allowed to send.
  • the number of the multiple PSFCHs that the terminal needs to send may be y3, where y3 is greater than the maximum number of PSFCHs that the terminal is allowed to send.
  • the PSFCH that the first terminal needs to send may be the PSFCH corresponding to multiple carriers.
  • the first terminal may be the terminal 101 mentioned above.
  • the first terminal needs to send y3 PSFCHs.
  • the first terminal can discard the PSFCHs with the lowest priority from the y3 PSFCHs to be sent in turn according to the priorities corresponding to the PSFCHs, and obtain y1 PSFCHs to be sent.
  • y3 is greater than the first threshold
  • y1 is less than or equal to the first threshold.
  • the first terminal can determine the PSFCH with the lowest priority among the 10 PSFCHs and discard the PSFCH.
  • the number of PSFCHs remaining is 9, which is still greater than the first threshold.
  • the first terminal can determine the PSFCH with the lowest priority among the remaining 9 PSFCHs and discard the PSFCH.
  • the number of PSFCHs remaining is 8, which is the same as the first threshold.
  • the first terminal stops discarding PSFCH. At this time, y1 is 8.
  • the first threshold may represent the maximum number of PSFCHs supported by the terminal for transmission, for example, it may be recorded as N MAX,PSFCH .
  • the first threshold may be determined by the terminal based on its own terminal capabilities. For example, the terminal determines the maximum number of PSFCHs supported by the terminal based on the current power, hardware configuration, software configuration, etc. Of course, the specific terminal can make any selection based on the actual situation, and this disclosure does not limit it.
  • the number of PSFCHs that the first terminal needs to send is, for example, y3.
  • y3 is greater than N MAX,PSFCH , it means that the first terminal can only send N MAX,PSFCH PSFCHs at most. Therefore, the first terminal needs to adjust the y3 PSFCHs. For example, the first terminal discards the PSFCH with the lowest priority from the y3 PSFCHs in turn based on the priority corresponding to the PSFCH.
  • the first terminal can determine the priority of the corresponding PSFCH according to the priority value of sending the PSFCH. Among them, the larger the priority value, the lower the priority.
  • the first terminal may preferentially discard the PSFCH with the largest priority value, and determine again whether the number of PSFCHs after discarding is greater than N MAX,PSFCH . If the number of PSFCHs after discarding is greater than N MAX,PSFCH , the PSFCH with the largest priority value among the remaining PSFCHs, that is, the PSFCH with the lowest priority, is discarded until the number of remaining PSFCHs is less than or equal to N MAX,PSFCH .
  • the number may be y1, in which case y1 may generally be equal to N MAX,PSFCH .
  • At least one bandwidth corresponding to the transmission of the PSFCH corresponds to a second threshold value, and the sum of the second threshold values corresponding to the respective bandwidths is equal to the first threshold value.
  • the bandwidth may include at least one of a frequency band and a carrier.
  • a frequency band may be The at least one carrier wave is included.
  • the sum of the second thresholds corresponding to the respective bandwidths may be less than or equal to the first threshold.
  • a separate third threshold may be corresponding to each frequency band.
  • the third threshold is the upper second threshold.
  • the sum of the third thresholds corresponding to each frequency band may be less than or equal to the first threshold.
  • a separate fourth threshold may be corresponding to each carrier.
  • the fourth threshold is the upper second threshold.
  • the sum of the fourth thresholds corresponding to each carrier may be less than or equal to the first threshold.
  • the second threshold may be the second threshold corresponding to the Rth bandwidth, that is, the second threshold may be the maximum number of PSFCHs corresponding to the Rth bandwidth.
  • R is a positive integer.
  • the maximum number of PSFCHs corresponding to the Rth bandwidth indicates the maximum number of PSFCHs allowed to be sent on the Rth bandwidth.
  • the first terminal may make adjustments for different bandwidths respectively.
  • the first terminal discards the PSFCH with the lowest priority from the PSFCH to be sent corresponding to the Rth bandwidth in order according to the priority level of the PSFCH to be sent. Until the number of PSFCHs corresponding to the Rth bandwidth is less than or equal to the maximum number of PSFCHs corresponding to the Rth bandwidth. Among them, the number of PSFCHs of the Rth bandwidth after PSFCH adjustment can be called y4. That is, y4 PSFCHs to be sent corresponding to the Rth bandwidth.
  • the first terminal discards the PSFCH with the lowest priority from the PSFCH corresponding to the Rth bandwidth according to the priority level of the PSFCH. Then the first terminal determines again based on the remaining PSFCH whether the number of PSFCHs corresponding to the Rth bandwidth is less than or equal to the maximum number of PSFCHs corresponding to the Rth bandwidth. If the number of PSFCHs corresponding to the Rth bandwidth is still greater than the maximum number of PSFCHs corresponding to the Rth bandwidth, the PSFCH with the lowest priority among the remaining PSFCHs will continue to be discarded. Until the number of PSFCHs corresponding to the Rth bandwidth is less than or equal to the maximum number of PSFCHs corresponding to the Rth bandwidth.
  • the sum of y4 corresponding to each bandwidth should be equal to y1.
  • y1 when the number of PSFCHs that the terminal needs to send is less than or equal to N MAX,PSFCH , y1 may be equal to the number of PSFCHs corresponding to multiple carriers that the terminal needs to send.
  • y1 when the number of PSFCHs that the terminal needs to send is greater than N MAX,PSFCH , y1 may be equal to N MAX,PSFCH .
  • different frequency bands may have their own corresponding N MAX,PSFCH , which may be expressed as N MAX,PSFCH,f .
  • N MAX,PSFCH,f may be expressed as N MAX,PSFCH corresponding to frequency band f.
  • the number of PSFCHs that the first terminal needs to send is y1. In this case, since y1 is less than or equal to the first threshold, the first terminal may not adjust the PSFCH.
  • the PSFCHs corresponding to the multiple carriers sent by the first terminal have y1 PSFCHs to be sent.
  • y1 PSFCHs to be sent may be considered as the number of PSFCHs that the terminal needs to send to meet N MAX,PSFCH .
  • whether to adjust the power of y1 PSFCHs to be sent or discard the PSFCHs may be determined based on the total transmission power of the y1 PSFCHs to be sent.
  • the first terminal may perform power adjustment or PSFCH discard on y1 PSFCHs to be transmitted to obtain y2 PSFCHs.
  • the total transmission power of y2 PSFCHs may be referred to as the first power.
  • the first power is less than or equal to the first maximum transmission power.
  • y2 is less than or equal to y1.
  • the first maximum transmit power can be considered as the maximum transmit power pre-configured by the terminal.
  • the terminal can determine the first maximum transmit power according to its own configuration.
  • the first maximum transmit power may be denoted as PCMAX .
  • the first terminal needs to adjust the power of y1 PSFCHs to be transmitted or discard the PSFCHs to obtain y2 PSFCHs, so that the total transmission power of y2 PSFCHs is less than or equal to PCMAX , thereby meeting the transmission requirement.
  • PCMAX can be the first maximum transmission power determined according to actual requirements, and when the terminal transmission power exceeds PCMAX , it can be considered that the transmission requirement is not met.
  • PCMAX can be determined by the terminal based on its own configuration, and a suitable value can be selected according to actual conditions, which is not limited in the present disclosure.
  • y2 is less than or equal to y1, and the first terminal may reduce the power and/or discard the y1 PSFCHs to be transmitted. In this case, only part of the PSFCHs may be reduced in power and/or discarded.
  • the first terminal may reduce the power of the PSFCH with the lowest priority among the y1 PSFCHs to be sent based on the priorities of the PSFCHs to be sent.
  • the first terminal determines the total transmission power corresponding to the y1 PSFCHs to be sent after the power reduction. Whether the rate is greater than the first maximum transmit power.
  • y2 is still equal to y1.
  • the first terminal only reduces the power of the PSFCH with the lowest priority.
  • the first terminal may discard the PSFCH for which power reduction is performed, that is, discard the PSFCH with the lowest priority among the y1 PSFCHs to be sent.
  • the first terminal again determines whether the total transmit power corresponding to the remaining PSFCHs after discarding the PSFCHs is greater than the first maximum transmit power.
  • y2 is less than y1.
  • the first terminal discards the PSFCH with the lowest priority to ensure that the total transmit power of y2 PSFCHs is less than or equal to PCMAX .
  • the first terminal can repeat the above process, that is, reduce the power or discard the PSFCH with the lowest priority from the remaining PSFCHs, until the total transmission power corresponding to the remaining PSFCH is less than or equal to the first maximum transmission power, and y2 PSFCHs are obtained.
  • the transmission power on the carrier can be guaranteed to be the following formula.
  • P PSFCH,one,c P 0,PSFCH,c +10log 10 (2 ⁇ )+ ⁇ PSFCH,c ⁇ PL ...Formula 2
  • c represents a carrier index.
  • P PSFCH,one,c represents the transmit power value of the PSFCH obtained after power control on each carrier.
  • the first terminal may determine which PSFCH to reduce power and/or discard based on the terminal implementation of the first terminal itself.
  • the first terminal determines to reduce the power of the PSFCH with the lowest priority among y1 PSFCHs to be sent, but at this time there are multiple PSFCHs with the same priority, all of which are the lowest.
  • the first terminal can decide to reduce the power of a certain PSFCH among the multiple PSFCHs with the lowest priority according to its own terminal implementation.
  • the PSFCH can also be discarded.
  • the first terminal determines to reduce the power of the PSFCH with the lowest priority among the remaining PSFCHs to be sent after the PSFCH is discarded, but at this time there are multiple PSFCHs with the same priority, all of which are the lowest.
  • the first terminal can decide to reduce the power of a PSFCH among the multiple PSFCHs with the lowest priority according to its own terminal implementation.
  • the PSFCH can also be discarded.
  • the specific terminal implementation may be a preset rule pre-stored in the terminal, or determined by the terminal based on its own power, hardware conditions, and software conditions.
  • the present disclosure does not limit the specific implementation of the terminal.
  • the first terminal does not perform power reduction and/or discard for the PSFCH corresponding to the primary carrier or the default carrier.
  • the terminal determines to reduce the power of the PSFCH with the lowest priority among y1 PSFCHs to be sent, but the PSFCH with the lowest priority is a PSFCH sent on the primary carrier or the default carrier, the first terminal does not reduce the power and/or discard the PSFCH.
  • the primary carrier or the default carrier may be pre-configured, and which carriers are the primary carriers and which carriers are the default carriers may be defined according to actual conditions, which is not specifically limited in the present disclosure.
  • y2 is equal to y1, and the first terminal may reduce the power of all PSFCHs among the y1 PSFCHs to be transmitted. In this case, the number of PSFCHs will not be changed, but the power of all PSFCHs will be reduced.
  • a separate power adjustment may be performed for each carrier, which is mainly due to the different power control parameters configured by the resource pool network equipment or pre-configured by the terminal on different carriers.
  • the total transmission power of the PSFCH corresponding to the xth carrier can be determined according to the number of PSFCHs corresponding to the xth carrier and the PSFCH transmission power corresponding to the xth carrier.
  • x is a positive integer.
  • the PSFCH transmission power corresponding to the xth carrier represents the transmission power of a single PSFCH on the xth carrier.
  • P PSFCH,one,c corresponding to each PSFCH in each carrier may be determined with reference to Formula 2.
  • the total transmit power of the PSFCH corresponding to the x-th carrier may be determined with reference to Formula 3.
  • the terminal when the terminal performs power reduction on all PSFCHs in the y1 PSFCHs to be transmitted, before performing power reduction, the terminal may determine whether the power reduction meets the requirements according to the terminal's own implementation. NTX ,PSFCH .
  • Mi ,c represents the number of PSFCHs of corresponding priority for each carrier that makes the total power less than or equal to PCMAX .
  • the PSFCH transmit power corresponding to the x-th carrier is determined based on the first PSFCH transmit power and the second PSFCH transmit power.
  • the first PSFCH transmit power indicates that the terminal determines the transmit power of a single PSFCH on the x-th carrier; the second PSFCH transmit power indicates the configured transmit power of a single PSFCH on the x-th carrier.
  • the first PSFCH transmit power is determined based on the second PSFCH transmit power, the total transmit power of the PSFCH corresponding to the x-th carrier, and the first maximum transmit power.
  • the second PSFCH transmit power is configured by the network device or the terminal.
  • the first PSFCH transmission power is the transmission power of a single PSFCH actually transmitted by the first terminal.
  • the PSFCH transmission power corresponding to the x-th carrier can be recorded as P PSFCH,K (i), which represents the transmission power corresponding to each PSFCH with a priority value within K on the x-th carrier.
  • P PSFCH,K (i) can be determined according to Formula 4.
  • P PSFCH, K (i) min (P new , P PSFCH, one, c ) ...Formula 4
  • P new is the first PSFCH transmission power mentioned above
  • P PSFCH,one,c is the second PSFCH transmission power mentioned above.
  • P new can be determined by Formula 5.
  • the total transmission power corresponding to all PSFCHs with the highest priority is also greater than PCMAX , and multiple PSFCHs cannot be sent simultaneously. Therefore, for this carrier, it is only necessary to satisfy P PSFCH,one,c ⁇ PCMAX . That is, when a PSFCH is sent alone, it is ensured that the transmission power of the PSFCH is less than or equal to PCMAX .
  • the first PSFCH transmit power represents the transmit power of the PSFCH corresponding to the x-th carrier determined by the terminal.
  • Pnew is usually less than PPSFCH,one,c ; when the total transmit power of the PSFCH corresponding to the x-th carrier is less than PCMAX , Pnew is usually greater than PPSFCH,one,c .
  • the PSFCH to be sent corresponding to the Rth bandwidth is power adjusted or the PSFCH is discarded.
  • the sum of the second maximum transmission power corresponding to each bandwidth is equal to the first maximum transmission power.
  • the second maximum transmission power can be considered as the maximum transmission power corresponding to the Rth bandwidth. That is, it represents the maximum value of the transmission power allowed by the first terminal on the Rth bandwidth.
  • the first terminal can adjust the power of the PSFCH to be transmitted corresponding to the bandwidth or discard the PSFCH. For example, reduce the power or discard part of the PSFCH in the Rth bandwidth.
  • the second maximum transmit power may be configured based on higher layer signaling.
  • the second maximum transmit power may be based on the total transmit power of the PSFCH to be transmitted corresponding to the entire bandwidth, the first The R bandwidths are determined corresponding to the total transmit power and the maximum transmit power of the PSFCH to be transmitted.
  • the total bandwidth corresponds to the total transmission power of the PSFCH to be sent, indicating the total transmission power required for all PSFCHs that the first terminal needs to send.
  • the Rth bandwidth corresponds to the total transmission power of the PSFCH to be sent, indicating the total transmission power required by the first terminal for all PSFCHs that need to be sent on the Rth bandwidth.
  • the second maximum transmit power can be determined by Formula 6.
  • f different frequency bands
  • P PSFCH,one,f,c represents the power control parameters of the corresponding carriers on different frequency bands.
  • N sch,TX,PSFCH,f,c represents the number of PSFCHs sent on each carrier of different frequency bands.
  • f min represents the minimum value of the carrier index on the frequency band
  • the total transmit power of the PSFCH corresponding to the Wth frequency band is determined based on the total transmit power of the PSFCH corresponding to each carrier in the Wth frequency band, where W is a positive integer.
  • the first terminal may also discard all PSFCHs to be sent on a specific carrier, where the specific carrier may be a carrier that satisfies the first condition in the Wth frequency band.
  • the first condition includes a simultaneous transmission of multiple carrier restrictions.
  • the simultaneous transmission of multiple carriers is limited to a maximum of 6 carriers, but the first terminal needs to simultaneously transmit 8 carriers, which is more than the requirement of the simultaneous transmission of multiple carriers, the first terminal needs to discard the PSFCH corresponding to the specific carrier.
  • the terminal may select carriers as specific carriers based on the priority of sending PSFCH on the carriers, and discard the PSFCH corresponding to the specific carriers.
  • the carrier when there is one carrier with the lowest PSFCH priority, the carrier can be used as a specific carrier and the PSFCH corresponding to the specific carrier is discarded. After that, it is determined based on the remaining carriers whether it is less than or equal to the requirement of simultaneously sending 6 carriers.
  • the multiple carriers can be used as specific carriers, and the PSFCHs corresponding to the multiple specific carriers are discarded. After that, it is determined whether the number of carriers is less than or equal to the requirement of simultaneously sending 6 carriers based on the remaining carriers.
  • the terminal can decide which carriers corresponding to the PSFCHs are used as specific carriers according to its own implementation, and discard the PSFCHs corresponding to the specific carriers. After that, it continues to determine whether it is less than or equal to the requirement of sending 6 carriers simultaneously based on the remaining carriers.
  • the first terminal when the remaining carriers are still greater than the requirement for simultaneously transmitting 6 carriers, the first terminal continues to determine the specific carriers using one or more of the above methods based on the remaining carriers, and discards the PSFCH corresponding to the specific carrier, until the remaining carriers are less than or equal to the requirement for simultaneously transmitting 6 carriers.
  • the first terminal may discard all PSFCHs corresponding to the carrier with the lowest priority of the PSFCH to be sent from the Wth frequency band in sequence according to the priority of the PSFCH to be sent in the carrier, until the number of carriers in the Wth frequency band is less than or equal to the number of carriers restricted from sending multiple carriers simultaneously.
  • the first terminal may determine the PSFCH with the lowest priority among all PSFCHs to be sent on all carriers, and discard all PSFCHs in the carrier corresponding to the PSFCH.
  • the first terminal determines whether it is less than or equal to the number of carriers restricted to simultaneously sending multiple carriers based on the remaining carriers.
  • the first terminal determines the carrier corresponding to the PSFCH with the lowest priority among the remaining carriers based on the remaining carriers, and discards all PSFCHs in the carrier. Until the remaining carriers are less than or equal to the number of carriers restricted to simultaneously sending multiple carriers.
  • the first condition includes a carrier combination requirement.
  • the carrier combination requirement may be that continuous carriers must be sent. Therefore, assuming that the carriers that the first terminal needs to send are carrier 0, carrier 2, and carrier 3, the first terminal needs to discard the PSFCH corresponding to carrier 0. Until the number of carriers in the Wth frequency band meets the limit of the carrier combination requirement.
  • the carrier combination requirement may directly limit the partial carrier combination allowed to be sent. Then the terminal needs to discard all PSFCHs corresponding to other carriers outside the carrier combination requirement in the Wth frequency band, until the number of carriers in the Wth frequency band meets the limitation of the carrier combination requirement.
  • the first condition includes a radio frequency retuning time limit.
  • the RF retuning time limit may be the time limit required for switching carriers.
  • slot1 and slot2 For two adjacent slots, such as slot1 and slot2, slot1 sends the PSFCH corresponding to carrier 0 and the PSFCH corresponding to carrier 1, and slot2 sends the PSFCH corresponding to carrier 0 and the PSFCH corresponding to carrier 2.
  • carrier 0 For carrier 0, it needs to be sent in both slot1 and slot2, and does not involve carrier switching. Therefore, the PSFCH corresponding to carrier 0 can be sent on slot2.
  • carrier 2 since the PSFCH corresponding to carrier 1 is sent on slot1, carrier switching is required for slot2. In other words, carrier 1 needs to be switched to carrier 2.
  • carrier switching requires two slots.
  • the process of switching from carrier 1 to carrier 2 cannot be completed in slot2. Therefore, for the first terminal in slot2, it can only choose to discard the PSFCH corresponding to carrier 2. Then the first terminal in slot2 can only send the PSFCH corresponding to carrier 0, but cannot send the PSFCH corresponding to carrier 2.
  • Step S2102 The first terminal sends PSFCHs corresponding to multiple carriers to the second terminal using a first power.
  • the first terminal sends the PSFCH corresponding to multiple carriers to the second terminal using the first power.
  • the second terminal receives a PSFCH corresponding to multiple carriers transmitted using a first power.
  • the first terminal sends a PSFCH corresponding to a different bandwidth to the second terminal using the second power.
  • the second terminal receives a PSFCH corresponding to a different bandwidth transmitted using a second power.
  • the sum of the PSFCHs corresponding to the multiple bandwidths is the same as the PSFCHs corresponding to the multiple carriers transmitted and/or received using the first power.
  • the sum of the second powers corresponding to the multiple bandwidths is equal to the first power.
  • side link means “side link”, “side”, “sidelink”, “sideline communication”, “sidelink communication”, “direct connection”, “direct link”, “direct communication”, “direct link communication” and other terms can be used interchangeably.
  • the side link communication method involved in the embodiment of the present disclosure may include at least one of step S2101 to step S2102.
  • step S2102 may be implemented as an independent embodiment, but is not limited thereto.
  • step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3a is a flow chart of a side link communication method according to an exemplary embodiment. As shown in FIG3a, the embodiment of the present disclosure relates to a side link communication method, which can be executed on a first terminal, and the method includes:
  • Step S3101 determine the PSFCH to be sent, and adjust the PSFCH to be sent.
  • step S3101 can refer to the optional implementation of step S2101 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • Step S3102 Send PSFCHs corresponding to multiple carriers using a first power.
  • step S3102 can refer to the optional implementation of step S2102 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • FIG3b is a flow chart of another side link communication method according to an exemplary embodiment.
  • the embodiment of the present disclosure relates to a side link communication method, which can be executed on a first terminal, and the method includes:
  • Step S3201 Send PSFCHs corresponding to multiple carriers using a first power.
  • step S3201 can refer to the optional implementation of step S2102 in Figure 2, the optional implementation of step S3102 in Figure 3a, and other related parts in the embodiment involved in Figure 2 and other related parts in the embodiment involved in Figure 3a, which will not be repeated here.
  • the PSFCHs corresponding to multiple carriers have y1 PSFCHs to be sent; the method also includes: if the total transmission power of the y1 PSFCHs to be sent is greater than a preset first maximum transmission power, power adjustment is performed on the y1 PSFCHs to be sent or the PSFCHs are discarded to obtain y2 PSFCHs, wherein the total transmission power of the y2 PSFCHs is the first power, and y2 is less than or equal to y1.
  • the method also includes: determining y3 PSFCHs to be sent, where y3 is greater than a first threshold; based on the priority corresponding to the PSFCH, discarding the PSFCH with the lowest priority from the y3 PSFCHs to be sent in turn, to obtain y1 PSFCHs to be sent, where y1 is less than or equal to the first threshold.
  • At least one bandwidth corresponding to sending PSFCH corresponds to a second threshold respectively, and the sum of the second thresholds corresponding to each bandwidth is equal to the first threshold, wherein the bandwidth includes at least one of a frequency band and a carrier, and each frequency band includes at least one carrier.
  • the second threshold is the maximum number of PSFCHs corresponding to the Rth bandwidth, where R is a positive integer; based on the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the y3 PSFCHs to be sent, to obtain y1 PSFCHs to be sent, including: according to the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the PSFCHs to be sent corresponding to the Rth bandwidth, until the number of PSFCHs corresponding to the Rth bandwidth is less than or equal to the maximum number of PSFCHs corresponding to the Rth bandwidth, to obtain y4 PSFCHs to be sent corresponding to the Rth bandwidth; wherein, among all the bandwidths occupied by sending PSFCH, the sum of y4 corresponding to each bandwidth is equal to y1.
  • the first threshold is determined based on terminal capabilities of the terminal itself.
  • power adjustment or PSFCH discarding is performed on y1 PSFCHs to be sent, including: if the total transmission power of the PSFCHs to be sent corresponding to the R-th bandwidth is greater than the second maximum transmission power corresponding to the R-th bandwidth, power adjustment or PSFCH discarding is performed on the PSFCH to be sent corresponding to the R-th bandwidth; wherein, in all bandwidths occupied by sending PSFCH, the sum of the second maximum transmission powers corresponding to each bandwidth is equal to the first maximum transmission power; the second maximum transmission power is based on high-level signaling configuration, or the second maximum transmission power is determined based on the total transmission power of the PSFCHs to be sent corresponding to all bandwidths, the total transmission power of the PSFCHs to be sent corresponding to the R-th bandwidth and the first maximum transmission power, and R is a positive integer.
  • the bandwidth includes a frequency band
  • the total transmit power of the PSFCH corresponding to the Wth frequency band is determined based on the total transmit power of the PSFCH corresponding to each carrier in the Wth frequency band, where W is a positive integer.
  • the method also includes: discarding all PSFCHs to be sent on a specific carrier, wherein the specific carrier is a carrier in the Wth frequency band that satisfies a first condition, and W is a positive integer; the first condition includes at least one of the following: restrictions on sending multiple carriers simultaneously; carrier combination requirements; and radio frequency retuning time restrictions.
  • the first condition includes a restriction on sending multiple carriers simultaneously; discarding all PSFCHs to be sent on a specific carrier includes: according to the priority of the PSFCHs to be sent in the carrier, discarding the PSFCHs corresponding to the carriers with the lowest priority of the PSFCHs to be sent from the Wth frequency band in sequence; until the number of carriers in the Wth frequency band is less than or equal to the number of carriers restricted from sending multiple carriers simultaneously.
  • the PSFCH corresponding to the primary carrier or the default carrier is not power reduced and/or dropped.
  • y2 is equal to y1; the total transmission power of the PSFCH corresponding to the x-th carrier is determined by the number of PSFCHs corresponding to the x-th carrier and the PSFCH transmission power corresponding to the x-th carrier, where x is a positive integer, and the PSFCH transmission power corresponding to the x-th carrier represents the transmission power of a single PSFCH on the x-th carrier. It can be understood that the x-th carrier is one of the multiple carriers transmitted by the terminal.
  • the PSFCH transmit power corresponding to the x-th carrier is determined based on the first PSFCH transmit power and the second PSFCH transmit power; wherein, the first PSFCH transmit power indicates the transmit power of a single PSFCH on the x-th carrier determined by the terminal, the second PSFCH transmit power indicates the configured transmit power of a single PSFCH on the x-th carrier, the first PSFCH transmit power is determined based on the second PSFCH transmit power, the total transmit power of the PSFCH corresponding to the x-th carrier and the first maximum transmit power, and the second PSFCH transmit power is configured by the network device or pre-configured by the terminal.
  • FIG4 is a flow chart of another side link communication method according to an exemplary embodiment. As shown in FIG4, the embodiment of the present disclosure relates to a side link communication method, which can be executed on a second terminal, and the method includes:
  • Step S4101 obtaining PSFCHs corresponding to multiple carriers transmitted with a first power.
  • step S4101 can refer to the optional implementation of step S2102 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • the PSFCH corresponding to multiple carriers has y1 PSFCHs to be sent; the received PSFCHs corresponding to multiple carriers are determined in the following manner: if the total transmission power of y1 PSFCHs to be sent is greater than a preset first maximum transmission power, power adjustment is performed on the y1 PSFCHs to be sent or the PSFCHs are discarded to obtain y2 PSFCHs, wherein the total transmission power of y2 PSFCHs is the first power, and y2 is less than or equal to y1.
  • the PSFCHs corresponding to the received multiple carriers are determined in the following manner: y3 PSFCHs to be sent are determined, where y3 is greater than a first threshold; based on the priority corresponding to the PSFCHs, the PSFCHs with the lowest priority are discarded in turn from the y3 PSFCHs to be sent, to obtain y1 PSFCHs to be sent, where y1 is less than or equal to the first threshold.
  • At least one bandwidth corresponding to the transmission of the PSFCH corresponds to a second threshold value, and the first threshold value corresponding to each bandwidth The sum of the two thresholds is equal to the first threshold, wherein the bandwidth includes at least one of a frequency band and a carrier, and each frequency band includes at least one carrier.
  • the second threshold is the maximum number of PSFCHs corresponding to the Rth bandwidth, where R is a positive integer; based on the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the y3 PSFCHs to be sent, to obtain y1 PSFCHs to be sent, including: according to the priority corresponding to the PSFCH, the PSFCH with the lowest priority is discarded in turn from the PSFCHs to be sent corresponding to the Rth bandwidth, until the number of PSFCHs corresponding to the Rth bandwidth is less than or equal to the maximum number of PSFCHs corresponding to the Rth bandwidth, to obtain y4 PSFCHs to be sent corresponding to the Rth bandwidth; wherein, among all the bandwidths occupied by sending PSFCH, the sum of y4 corresponding to each bandwidth is equal to y1.
  • the first threshold is determined based on terminal capabilities of the terminal itself.
  • power adjustment or PSFCH discarding is performed on y1 PSFCHs to be sent, including: if the total transmission power of the PSFCHs to be sent corresponding to the R-th bandwidth is greater than the second maximum transmission power corresponding to the R-th bandwidth, power adjustment or PSFCH discarding is performed on the PSFCH to be sent corresponding to the R-th bandwidth; wherein, in all bandwidths occupied by sending PSFCH, the sum of the second maximum transmission powers corresponding to each bandwidth is equal to the first maximum transmission power; the second maximum transmission power is based on high-level signaling configuration, or the second maximum transmission power is determined based on the total transmission power of the PSFCHs to be sent corresponding to all bandwidths, the total transmission power of the PSFCHs to be sent corresponding to the R-th bandwidth and the first maximum transmission power, and R is a positive integer.
  • the bandwidth includes a frequency band
  • the total transmit power of the PSFCH corresponding to the Wth frequency band is determined based on the total transmit power of the PSFCH corresponding to each carrier in the Wth frequency band, where W is a positive integer.
  • the PSFCHs corresponding to the received multiple carriers are determined by discarding all PSFCHs to be sent on a specific carrier, where the specific carrier is a carrier in the Wth frequency band that satisfies the first condition, and W is a positive integer; the first condition includes at least one of the following: restrictions on simultaneous transmission of multiple carriers; carrier combination requirements; and RF retuning time limits.
  • the first condition includes a restriction on sending multiple carriers simultaneously; discarding all PSFCHs to be sent on a specific carrier includes: according to the priority of the PSFCHs to be sent in the carrier, discarding the PSFCHs corresponding to the carriers with the lowest priority of the PSFCHs to be sent from the Wth frequency band in sequence; until the number of carriers in the Wth frequency band is less than or equal to the number of carriers restricted from sending multiple carriers simultaneously.
  • the PSFCH corresponding to the primary carrier or the default carrier is not power reduced and/or dropped.
  • y2 is equal to y1; the total transmission power of the PSFCH corresponding to the x-th carrier is determined by the number of PSFCHs corresponding to the x-th carrier and the PSFCH transmission power corresponding to the x-th carrier, where x is a positive integer, and the PSFCH transmission power corresponding to the x-th carrier represents the transmission power of a single PSFCH on the x-th carrier. It can be understood that the x-th carrier is one of the multiple carriers transmitted by the terminal.
  • the PSFCH transmit power corresponding to the x-th carrier is determined based on the first PSFCH transmit power and the second PSFCH transmit power; wherein, the first PSFCH transmit power indicates the transmit power of a single PSFCH on the x-th carrier determined by the terminal, the second PSFCH transmit power indicates the configured transmit power of a single PSFCH on the x-th carrier, the first PSFCH transmit power is determined based on the second PSFCH transmit power, the total transmit power of the PSFCH corresponding to the x-th carrier and the first maximum transmit power, and the second PSFCH transmit power is configured by the network device or pre-configured by the terminal.
  • FIG5 is a flow chart of another side link communication method according to an exemplary embodiment. As shown in FIG5, the embodiment of the present disclosure relates to a side link communication method, and the method includes:
  • Step S5101 A first terminal sends PSFCHs corresponding to multiple carriers to a second terminal using a first power.
  • the optional implementation method of step S5101 can refer to the optional implementation method of step S2102 in Figure 2, the optional implementation method of step S3102 in Figure 3a, the optional implementation method of step S3201 in Figure 3b, the optional implementation method of step S4101 in Figure 4, and other related parts in the embodiment involved in Figure 2, other related parts in the embodiment involved in Figure 3a, other related parts in the embodiment involved in Figure 3b, and other related parts in the embodiment involved in Figure 4, which will not be repeated here.
  • the LTE SL CA mechanism can be reused without scaling the transmit power of all PSFCHs.
  • the power on one carrier is guaranteed to be as shown in Formula 2.
  • N MAX,PSFCH the priority values are ranked from large to small (priority The larger the value, the lower the priority), and the corresponding number of PSFCHs are discarded, where N MAX,PSFCH is the maximum number of PSFCHs supported in each frequency band determined by the terminal based on its own capabilities.
  • each frequency band/carrier is prioritized from high to low in terms of priority value, the PSFCH transmission on the corresponding frequency band/carrier is discarded, and then subsequent steps are performed.
  • the transmission of the PSFCH corresponding to the maximum priority value will be power-reduced (the difference here from LTE is that only one PSCCH and PSSCH of LTE can be sent on one carrier, but multiple PSFCHs can be sent on one carrier), or discarded, and the process is repeated until the total power of the transmission does not exceed PCMAX ;
  • the current mechanism ensures that no dropping or power reduction of the PSFCH is performed on the primary carrier or the default carrier.
  • NR SL PSFCH intra-band CA case, each carrier is power controlled, N MAX, PSFCH is configured for each frequency band
  • the transmit power of all PSFCHs may be scaled. At this time, it is necessary to consider that the power control parameters in the resource pools on different carriers are different. In this case, the transmit power of each PSFCH must consider the parameters of each carrier, such as reference formula 2 and/or formula 3.
  • the UE may select a method to satisfy the above-mentioned mechanism based on the implementation.
  • Mi ,c represents the sum of the number of PSFCHs of the corresponding priority for each carrier so that the total power is less than or equal to PCMAX .
  • K is the maximum value of the priority value.
  • an inter-band CA SL PSFCH power control mechanism is provided (where N MAX,PSFCH is configured or defined per frequency band).
  • the PSFCH in each frequency band is first discarded so that the number of PSFCHs sent in each frequency band is less than or equal to N MAX,PSFCH,f , where f represents the corresponding frequency band, and the parameter represents the maximum number of PSFCHs that can be sent by the UE in each frequency band. Then the above process is followed, and the sum of the number of PSFCHs to be sent is the sum of the discarded PSFCHs based on the maximum number of PSFCHs that can be sent in each frequency band.
  • the terminal needs to drop all PSFCH transmissions on certain carriers.
  • the total power is allocated to each frequency band by configuring PCMAX,f for each frequency band through high-level configuration, or PCMAX,f is set to: the total power of the number of PSFCHs to be sent on the frequency band/the total power of the number of PSFCHs to be sent on all frequency bands* PCMAX ; then if there is only one carrier for a frequency band, the PSFCH power and the number of transmissions can be determined by referring to the R16 mechanism for the frequency band, except that PCMAX,f is used instead of PCMAX in the prior art; if there are multiple carriers, the previous page process is executed, and the total power PCMAX,f on each frequency band can refer to formula 6 as follows.
  • the UE may need to discard all PSFCH transmissions on certain carriers before executing the above steps.
  • the reason for discarding is due to the limitation of sending multiple at the same time, the limitation of the supported carrier combination or the limitation of the RF re-tuning time.
  • the carrier to be discarded starts with the carrier with the lowest priority (the largest priority value) among all PSFCH transmissions on the carrier. Continue in sequence until the above requirements of the terminal are met. The terminal can discard the remaining The PSFCH transmission on the remaining carriers executes the above power control allocation process.
  • each step can be implemented as an independent embodiment. Some or all of the steps and their optional implementations can be arbitrarily combined with some or all of the steps in other embodiments, and can also be arbitrarily combined with the optional implementations of other embodiments.
  • the embodiments of the present disclosure also provide a device for implementing any of the above methods, for example, a side link communication device is provided, the device includes a unit or module for implementing each step performed by the first terminal in any of the above methods.
  • a side link communication device is provided, including a unit or module for implementing each step performed by the second terminal in any of the above methods.
  • the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation.
  • the units or modules in the device can 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 instructions are stored in the memory.
  • the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the 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 inside the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in
  • the processor is a circuit with signal processing capability.
  • the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.
  • ASIC Neural Network Processing Unit
  • NPU Neural Network Processing Unit
  • TPU Tensor Processing Unit
  • DPU Deep Learning Processing Unit
  • FIG6a is a schematic diagram of a side link communication device according to an exemplary embodiment.
  • the side link communication device 6100 may be, for example, the first terminal mentioned above, and the device 6100 includes: a transceiver module 6101.
  • the device 6100 may also include any possible modules such as a processing module 6102, which is not limited in the present disclosure.
  • the transceiver module 6101 is used to send PSFCHs corresponding to multiple carriers using a first power.
  • the transceiver module 6101 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.
  • the processing module 6102 is used to perform 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.
  • FIG6b is a schematic diagram of another side link communication device according to an exemplary embodiment.
  • the side link communication device 6200 may be, for example, the second terminal mentioned above, and the device 6200 includes: a transceiver module 6201.
  • the device 6200 may also include any possible modules such as a processing module, which is not limited in the present disclosure.
  • the transceiver module 6201 is used to obtain the PSFCH corresponding to multiple carriers transmitted using a first power.
  • the transceiver module 6201 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.
  • FIG7a is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure.
  • the communication device 7100 may be a network device (e.g., an access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.), or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods.
  • the communication device 7100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.
  • the communication device 7100 includes one or more processors 7101.
  • the processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process the data of the program.
  • the communication device 7100 is used to execute any of the above methods.
  • the communication device 7100 also includes one or more memories 7102 for storing instructions. Or part of the memory 7102 may also be located outside the communication device 7100.
  • the communication device 7100 further includes one or more transceivers 7103.
  • the transceiver 7103 performs the communication steps S2102 such as sending and/or receiving in the above method, but is not limited thereto.
  • the processor 7101 performs other steps S2101, but is not limited thereto.
  • the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated.
  • the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.
  • the communication device 7100 may include one or more interface circuits 7104.
  • the interface circuit 7104 is connected to the memory 7102, and the interface circuit 7104 may be used to receive signals from the memory 7102 or other devices, and may be used to send signals to the memory 7102 or other devices.
  • the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.
  • the communication device 7100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a.
  • the communication device may be an independent device or may be part of a larger device.
  • 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 and 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, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • Fig. 7b is a schematic diagram of the structure of a chip 7200 provided in an embodiment of the present disclosure.
  • the communication device 7100 may be a chip or a chip system
  • the chip 7200 includes one or more processors 7201, and the chip 7200 is used to execute any of the above methods.
  • the chip 7200 further includes one or more interface circuits 7202.
  • the interface circuit 7202 is connected to the memory 7203.
  • the interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and the interface circuit 7202 can be used to send signals to the memory 7203 or other devices.
  • the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.
  • the interface circuit 7202 performs the communication step S2102 of sending and/or receiving in the above method, but is not limited thereto.
  • the processor 7201 performs other steps S2101, but is not limited thereto.
  • interface circuit interface circuit
  • transceiver pin transceiver
  • the chip 7200 further includes one or more memories 7203 for storing instructions.
  • the memory 7203 may be outside the chip 7200.
  • the present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices.
  • the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.
  • the present disclosure also proposes a program product, which, when executed by the communication device 7100, enables the communication device 7100 to execute any of the above methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.
  • This paper designs a PSFCH power control method in multi-carrier scenario and provides two methods based on LTE SL CA and NR SL PSFCH power control mechanism. It realizes the power control of PSFCH in CA scenario and determines the maximum number of PSFCH transmissions for each frequency band.
  • the present disclosure enables, in the NR SL CA scenario, if the PSFCHs of different carriers overlap, to perform power control on the PSFCHs and determine the number of PSFCHs to be sent accordingly.

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Abstract

本公开涉及侧链路通信方法、终端及存储介质，侧链路通信方法包括：采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。本公开可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。

Description

侧链路通信方法、终端及存储介质 技术领域
本公开涉及通信技术领域，尤其涉及侧链路通信方法、终端及存储介质。
背景技术
在相关技术中，存在多个载波(carrier)的物理侧链路控制信道(physical sidelink control channel，PSCCH)或物理侧链路共享信道(physical sidelink shared channel，PSSCH)发送在时域上存在重叠(overlap)的情况。其中，每个载波上仅发送一个PSCCH或PSSCH。
发明内容
对于5G通信中侧链路载波聚合的场景下，当不同载波上发送的物理侧链路反馈信道(physical sidelink feedback channel，PSFCH)存在时域重叠的情况，如何实现对不同载波上发送的PSFCH进行功率控制，目前尚不明确。
本公开实施例提出了侧链路通信方法、终端及存储介质。
根据本公开实施例的第一方面，提出了一种侧链路通信方法，方法包括：采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
根据本公开实施例的第二方面，提出了一种侧链路通信方法，方法包括：接收采用第一功率发送的多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
根据本公开实施例的第三方面，提出了一种侧链路通信方法，方法包括：第一终端采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率；第二终端接收第一终端采用第一功率发送的多个载波对应的PSFCH。
根据本公开实施例的第四方面，提出了一种第一终端，包括：收发模块；收发模块用于，采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
根据本公开实施例的第五方面，提出了一种第二终端，包括：收发模块；收发模块用于，接收采用第一功率发送的多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
根据本公开实施例的第六方面，提出了一种第一终端，包括：一个或多个处理器；其中，第一终端用于执行第一方面及第一方面中的任一项侧链路通信方法。
根据本公开实施例的第七方面，提出了一种第二终端，包括：一个或多个处理器；其中，第二终端用于执行第二方面及第二方面中的任一项侧链路通信方法。
根据本公开实施例的第八方面，提出了一种通信系统，包括第一终端、第二终端，其中，第一终端被配置为实现第一方面及第一方面中的任一项侧链路通信方法，第二终端被配置为实现第二方面及第二方面中的任一项侧链路通信方法。
根据本公开实施例的第九方面，提出了一种存储介质，存储介质存储有指令，当指令在通信设备上运行时，使得通信设备执行如第一方面及第一方面中的任一项或第二方面及第二方面中的任一项侧链路通信方法。
本公开可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
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图1是根据本公开实施例示出的通信系统架构示意图。
图2是根据本公开实施例示出的一种侧链路通信方法交互示意图。
图3a是根据一示例性实施例示出的一种侧链路通信方法流程图。
图3b是根据一示例性实施例示出的另一种侧链路通信方法流程图。
图4是根据一示例性实施例示出的又一种侧链路通信方法流程图。
图5是根据一示例性实施例示出的再一种侧链路通信方法流程图。
图6a是根据一示例性实施例示出的一种侧链路通信装置示意图。
图6b是根据一示例性实施例示出的另一种侧链路通信装置示意图。
图7a是根据一示例性实施例示出的一种通信设备示意图。
图7b是根据一示例性实施例示出的一种芯片示意图。
具体实施方式
本公开实施例提出了侧链路通信方法、终端及存储介质。
第一方面，本公开实施例提出了一种侧链路通信方法，方法由第一终端执行，方法包括：采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
结合第一方面的一些实施例，多个载波对应的PSFCH具有y1个待发送的PSFCH；方法还包括：若y1个待发送的PSFCH的发送总功率大于预先设定的第一最大发送功率，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH，其中，y2个PSFCH的发送总功率为第一功率，y2小于或等于y1。
在上述实施例中，提供了在y1个待发送的PSFCH的发送总功率超过最大发送功率的情况下，可以对y1个待发送的PSFCH进行功率调整或丢弃。使得终端可以在载波聚合场景下，按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
结合第一方面的一些实施例，方法还包括：确定y3个待发送的PSFCH，其中，y3大于第一阈值；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，y1小于或等于第一阈值。
在上述实施例中，提供了当终端需要发送的PSFCH数量超过第一阈值的情况下，可以丢弃其中部分数量的PSFCH发送。使得终端可以在载波聚合场景下，按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
结合第一方面的一些实施例，发送PSFCH对应的至少一个带宽分别对应一个第二阈值，各个带宽对应的第二阈值之和等于第一阈值，其中，带宽包括频带和载波中的至少一者，每个频带包括至少一个载波。
在上述实施例中，提供了多种不同维度下的阈值，以适用于多种场景。
结合第一方面的一些实施例，第二阈值为第R个带宽对应的最大PSFCH数量，R为正整数；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，包括：按照PSFCH对应的优先级高低，从第R个带宽对应的待发送的PSFCH中依次丢弃优先级最低的PSFCH，直至第R个带宽对应的PSFCH数量小于或等于第R个带宽对应的最大PSFCH数量，得到第R个带宽对应的y4个待发送的PSFCH；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的y4之和等于y1。
在上述实施例中，可以针对每个带宽单独进行PSFCH的功率调整和/或丢弃。从而确定在不同带宽上合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
结合第一方面的一些实施例，第一阈值基于终端自身的终端能力确定。
在上述实施例中，终端可以根据自身终端能力，为发送多个载波对应的PSFCH所占用的不同带宽分别确定第一阈值。以适用于不同能力的终端。
结合第一方面的一些实施例，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，包括：若第R个带宽对应的待发送的PSFCH的发送总功率大于第R个带宽对应的第二最大发送功率，对第R个带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的第二最大发送功率之和等于第一最大发送功率；第二最大发送功率基于高层信令配置，或第二最大发送功率基于全部带宽对应待发送的PSFCH的发送总功率、第R个带宽对应待发送的PSFCH的发送总功率和第一最大发送功率确定，R为正整数。
在上述实施例中，可以针对不同带宽上对应的最大发送功率进行功率控制，从而实现针对不同带宽的PSFCH功率调整和/或丢弃，以实现更准确的侧链路通信。
结合第一方面的一些实施例，带宽包括频带，第W个频带对应的PSFCH的发送总功率基于第W个频带内各个载波对应的PSFCH的发送总功率确定，W为正整数。
在上述实施例中，提供了一种确定频带发送总功率的方式。以便基于该发送功率发送该频带上的PSFCH，提高侧链路通信效率。
结合第一方面的一些实施例，方法还包括：丢弃特定载波上待发送的所有PSFCH，其中，特定载波为第W个频带内满足第一条件的载波，W为正整数；第一条件包括以下至少一项：同时发送多 个载波限制；载波组合要求；射频重调时间限制。
在上述实施例中，提供了多种确定丢弃特定载波上待发送PSFCH的方式，以适用于多种不同场景下对多载波上待发送PSFCH的丢弃，以实现更准确的侧链路通信。
结合第一方面的一些实施例，第一条件包括同时发送多个载波限制；丢弃特定载波上待发送的所有PSFCH包括：按照载波内待发送PSFCH的优先级高低，从第W个频带内依次丢弃待发送PSFCH的优先级最低的载波所对应的PSFCH；直至第W个频带内的载波数量小于或等于同时发送多个载波限制的载波数量。
在上述实施例中，提供了针对同时发送多个载波限制的情况下丢弃特定载波上待发送PSFCH的方式，以实现更准确的侧链路通信。
结合第一方面的一些实施例，y2小于y1；对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH包括：基于待发送的PSFCH对应的优先级高低，对y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低；若进行功率降低后的发送总功率大于第一最大发送功率，丢弃进行功率降低的PSFCH；直至PSFCH的发送总功率小于或等于预先设定的第一最大发送功率，得到y2个PSFCH。
在上述实施例中，可以对部分数量的PSFCH发送进行功率降低和/或丢弃，以保证终端可以在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
结合第一方面的一些实施例，y1个待发送的PSFCH中优先级最低的PSFCH为多个，基于终端自身的终端实现确定进行功率降低和/或丢弃的PSFCH。
在上述实施例中，终端可以根据自身实现确定对相同优先级的PSFCH中的一个或多个PSFCH进行功率降低和/或丢弃，以实现更高效率的侧链路通信。
结合第一方面的一些实施例，主载波或默认载波对应的PSFCH不进行功率降低和/或丢弃。
在上述实施例中，可以对部分载波不执行功率降低和/或丢弃，进而保证相应载波上的PSFCH可以被发送，提高侧链路通信效率和准确性。
结合第一方面的一些实施例，y2等于y1；第x个载波对应PSFCH的发送总功率由第x个载波对应的PSFCH数量，以及第x个载波对应的PSFCH发送功率确定，其中，x为正整数，第x个载波对应的PSFCH发送功率表示第x个载波上单个PSFCH的发送功率。可以理解的是，第x个载波为终端发送多个载波中的一个载波。
在上述实施例中，终端可以对载波中的全部PSFCH进行功率降低，以实现在不丢弃PSFCH的情况下，可以在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
结合第一方面的一些实施例，第x个载波对应的PSFCH发送功率基于第一PSFCH发送功率和第二PSFCH发送功率确定；其中，第一PSFCH发送功率表示终端确定第x个载波上单个PSFCH的发送功率，第二PSFCH发送功率表示第x个载波上单个PSFCH被配置的发送功率，第一PSFCH发送功率基于第二PSFCH发送功率、第x个载波对应的PSFCH的发送总功率和第一最大发送功率确定，第二PSFCH发送功率为网络设备配置或终端预配置的。
在上述实施例中，提供了载波对应的PSFCH平均发送功率的确定方式，以便终端可以基于该功率进行相应的功率降低，并基于该功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第二方面，提供一种侧链路通信方法，方法由第二终端执行，方法包括：接收采用第一功率发送的多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
结合第二方面的一些实施例，多个载波对应的PSFCH具有y1个待发送的PSFCH；接收到的多个载波对应的PSFCH，通过以下方式确定：若y1个待发送的PSFCH的发送总功率大于预先设定的第一最大发送功率，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH，其中，y2个PSFCH的发送总功率为第一功率，y2小于或等于y1。
结合第二方面的一些实施例，接收到的多个载波对应的PSFCH，通过以下方式确定：确定y3个待发送的PSFCH，其中，y3大于第一阈值；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，y1小于或等于第一阈值。
结合第二方面的一些实施例，发送PSFCH对应的至少一个带宽分别对应一个第二阈值，各个带宽对应的第二阈值之和等于第一阈值，其中，带宽包括频带和载波中的至少一者，每个频带包括至少一个载波。
结合第二方面的一些实施例，第二阈值为第R个带宽对应的最大PSFCH数量，R为正整数；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，包括：按照PSFCH对应的优先级高低，从第R个带宽对应的待发送的PSFCH中依次丢弃优先级最低的PSFCH，直至第R个带宽对应的PSFCH数量小于或等于第R个带宽对应的最大PSFCH数量，得到第R个带宽对应的y4个待发送的PSFCH；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的y4之和等于y1。
结合第二方面的一些实施例，第一阈值基于终端自身的终端能力确定。
结合第二方面的一些实施例，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，包括：若第R个带宽对应的待发送的PSFCH的发送总功率大于第R个带宽对应的第二最大发送功率，对第R个带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的第二最大发送功率之和等于第一最大发送功率；第二最大发送功率基于高层信令配置，或第二最大发送功率基于全部带宽对应待发送的PSFCH的发送总功率、第R个带宽对应待发送的PSFCH的发送总功率和第一最大发送功率确定，R为正整数。
结合第二方面的一些实施例，带宽包括频带，第W个频带对应的PSFCH的发送总功率基于第W个频带内各个载波对应的PSFCH的发送总功率确定，W为正整数。
结合第二方面的一些实施例，接收到的多个载波对应的PSFCH，通过以下方式确定：丢弃特定载波上待发送的所有PSFCH，其中，特定载波为第W个频带内满足第一条件的载波，W为正整数；第一条件包括以下至少一项：同时发送多个载波限制；载波组合要求；射频重调时间限制。
结合第二方面的一些实施例，第一条件包括同时发送多个载波限制；丢弃特定载波上待发送的所有PSFCH包括：按照载波内待发送PSFCH的优先级高低，从第W个频带内依次丢弃待发送PSFCH的优先级最低的载波所对应的PSFCH；直至第W个频带内的载波数量小于或等于同时发送多个载波限制的载波数量。
结合第二方面的一些实施例，y2小于y1；对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH包括：基于待发送的PSFCH对应的优先级高低，对y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低；若进行功率降低后的发送总功率大于第一最大发送功率，丢弃进行功率降低的PSFCH；直至PSFCH的发送总功率小于或等于预先设定的第一最大发送功率，得到y2个PSFCH。
结合第二方面的一些实施例，y1个待发送的PSFCH中优先级最低的PSFCH为多个，基于终端自身的终端实现确定进行功率降低和/或丢弃的PSFCH。
结合第二方面的一些实施例，主载波或默认载波对应的PSFCH不进行功率降低和/或丢弃。
结合第二方面的一些实施例，y2等于y1；第x个载波对应PSFCH的发送总功率由第x个载波对应的PSFCH数量，以及第x个载波对应的PSFCH发送功率确定，其中，x为正整数，第x个载波对应的PSFCH发送功率表示第x个载波上单个PSFCH的发送功率。可以理解的是，第x个载波为终端发送多个载波中的一个载波。
结合第二方面的一些实施例，第x个载波对应的PSFCH发送功率基于第一PSFCH发送功率和第二PSFCH发送功率确定；其中，第一PSFCH发送功率表示终端确定第x个载波上单个PSFCH的发送功率，第二PSFCH发送功率表示第x个载波上单个PSFCH被配置的发送功率，第一PSFCH发送功率基于第二PSFCH发送功率、第x个载波对应的PSFCH的发送总功率和第一最大发送功率确定，第二PSFCH发送功率为网络设备配置或终端预配置的。
根据本公开实施例的第三方面，提供一种侧链路通信方法，方法包括：第一终端采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率；第二终端接收第一终端采用第一功率发送的多个载波对应的PSFCH。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第四方面，提供一种第一终端，包括：收发模块；收发模块用于，采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第五方面，提供一种第二终端，包括：收发模块；收发模块用于，接收采 用第一功率发送的多个载波对应的侧链路反馈信道PSFCH，其中，多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，第一功率小于或等于预先设定的第一最大发送功率。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第六方面，提供一种第一终端，包括：一个或多个处理器；其中，第一终端用于执行第一方面及第一方面中的任一项侧链路通信方法。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第七方面，提供一种第二终端，包括：一个或多个处理器；其中，第二终端用于执行第二方面及第二方面中的任一项侧链路通信方法。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第八方面，提供一种通信系统，包括第一终端、第二终端，其中，第一终端被配置为实现第一方面及第一方面中的任一项侧链路通信方法，第二终端被配置为实现第二方面及第二方面中的任一项侧链路通信方法。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第九方面，提供一种存储介质，存储介质存储有指令，当指令在通信设备上运行时，使得通信设备执行如第一方面及第一方面中的任一项或第二方面及第二方面中的任一项侧链路通信方法。
在上述实施例中，可以通过第一功率发送多个载波对应的PSFCH，从而实现在载波聚合场景下按照合适的功率发送相应数量的PSFCH，提高侧链路通信效率。
根据本公开实施例的第十方面，本公开实施例提出了程序产品，上述程序产品被通信设备执行时，使得上述通信设备执行如第一方面或第二方面的可选实现方式所描述的方法。
根据本公开实施例的第十一方面，本公开实施例提出了计算机程序，当其在计算机上运行时，使得计算机执行如第一方面或第二方面的可选实现方式所描述的方法。
根据本公开实施例的第十二方面，本公开实施例提供了一种芯片或芯片系统。该芯片或芯片系统包括处理电路，被配置为执行根据上述第一方面或第二方面的可选实现方式所描述的方法。
可以理解地，本公开各实施例所涉及的终端、接入网设备、第一网元、其它网元、核心网设备、通信系统、存储介质、程序产品、计算机程序、芯片或芯片系统均用于执行本公开实施例所提出的方法。因此，其所能达到的有益效果可以参考对应方法中的有益效果，此处不再赘述。
本公开实施例提出了侧链路通信方法、终端及存储介质。在一些实施例中，侧链路通信方法与信息处理方法、通信方法等术语可以相互替换，侧链路通信装置与信息处理装置、通信装置等术语可以相互替换，信息处理系统、通信系统等术语可以相互替换。
本公开实施例并非穷举，仅为部分实施例的示意，不作为对本公开保护范围的具体限制。在不矛盾的情况下，某一实施例中的每个步骤均可以作为独立实施例来实施，且各步骤之间可以任意组合，例如，在某一实施例中去除部分步骤后的方案也可以作为独立实施例来实施，且在某一实施例中各步骤的顺序可以任意交换，另外，某一实施例中的可选实现方式可以任意组合；此外，各实施例之间可以任意组合，例如，不同实施例的部分或全部步骤可以任意组合，某一实施例可以与其他实施例的可选实现方式任意组合。
在各本公开实施例中，如果没有特殊说明以及逻辑冲突，各实施例之间的术语和/或描述具有一致性，且可以互相引用，不同实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本公开实施例中所使用的术语只是为了描述特定实施例的目的，而并非作为对本公开的限制。
在本公开实施例中，除非另有说明，以单数形式表示的元素，如“一个”、“一种”、“该”、“上述”、“所述”、“前述”、“这一”等，可以表示“一个且只有一个”，也可以表示“一个或多个”、“至少一个”等。例如，在翻译中使用如英语中的“a”、“an”、“the”等冠词(article)的情况下，冠词之后的名词可以理解为单数表达形式，也可以理解为复数表达形式。
在本公开实施例中，“多个”是指两个或两个以上。
在一些实施例中，“至少一者(至少一项、至少一个)(at least one of)”、“一个或多个(one or more)”、“多个(a plurality of)”、“多个(multiple)等术语可以相互替换。
在一些实施例中，“A、B中的至少一者”、“A和/或B”、“在一情况下A，在另一情况下B”、 “响应于一情况A，响应于另一情况B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)；在一些实施例中A和B(A和B都被执行)。当有A、B、C等更多分支时也类似上述。
在一些实施例中，“A或B”等记载方式，根据情况可以包括以下技术方案：在一些实施例中A(与B无关地执行A)；在一些实施例中B(与A无关地执行B)；在一些实施例中从A和B中选择执行(A和B被选择性执行)。当有A、B、C等更多分支时也类似上述。
本公开实施例中的“第一”、“第二”等前缀词，仅仅为了区分不同的描述对象，不对描述对象的位置、顺序、优先级、数量或内容等构成限制，对描述对象的陈述参见权利要求或实施例中上下文的描述，不应因为使用前缀词而构成多余的限制。例如，描述对象为“字段”，则“第一字段”和“第二字段”中“字段”之前的序数词并不限制“字段”之间的位置或顺序，“第一”和“第二”并不限制其修饰的“字段”是否在同一个消息中，也不限制“第一字段”和“第二字段”的先后顺序。再如，描述对象为“等级”，则“第一等级”和“第二等级”中“等级”之前的序数词并不限制“等级”之间的优先级。再如，描述对象的数量并不受序数词的限制，可以是一个或者多个，以“第一装置”为例，其中“装置”的数量可以是一个或者多个。此外，不同前缀词修饰的对象可以相同或不同，例如，描述对象为“装置”，则“第一装置”和“第二装置”可以是相同的装置或者不同的装置，其类型可以相同或不同；再如，描述对象为“信息”，则“第一信息”和“第二信息”可以是相同的信息或者不同的信息，其内容可以相同或不同。
在一些实施例中，“包括A”、“包含A”、“用于指示A”、“携带A”，可以解释为直接携带A，也可以解释为间接指示A。
在一些实施例中，“响应于……”、“响应于确定……”、“在……的情况下”、“在……时”、“当……时”、“若……”、“如果……”等术语可以相互替换。
在一些实施例中，“大于”、“大于或等于”、“不小于”、“多于”、“多于或等于”、“不少于”、“高于”、“高于或等于”、“不低于”、“以上”等术语可以相互替换，“小于”、“小于或等于”、“不大于”、“少于”、“少于或等于”、“不多于”、“低于”、“低于或等于”、“不高于”、“以下”等术语可以相互替换。
在一些实施例中，装置和设备可以解释为实体的、也可以解释为虚拟的，其名称不限定于实施例中所记载的名称，在一些情况下也可以被理解为“设备(equipment)”、“设备(device)”、“电路”、“网元”、“节点”、“功能”、“单元”、“部件(section)”、“系统”、“网络”、“芯片”、“芯片系统”、“实体”、“主体”等。
在一些实施例中，“网络”可以解释为网络中包含的装置，例如，接入网设备、核心网设备等。
在一些实施例中，“接入网设备(access network device，AN device)”也可以被称为“无线接入网设备(radio access network device，RAN device)”、“基站(base station，BS)”、“无线基站(radio base station)”、“固定台(fixed station)”，在一些实施例中也可以被理解为“节点(node)”、“接入点(access point)”、“发送点(transmission point，TP)”、“接收点(reception point，RP)”、“发送和/或接收点(transmission/reception point，TRP)”、“面板(panel)”、“天线面板(antenna panel)”、“天线阵列(antenna array)”、“小区(cell)”、“宏小区(macro cell)”、“小型小区(small cell)”、“毫微微小区(femto cell)”、“微微小区(pico cell)”、“扇区(sector)”、“小区组(cell group)”、“服务小区”、“载波(carrier)”、“分量载波(component carrier)”、“带宽部分(bandwidth part，BWP)”等。
在一些实施例中，“终端(terminal)”或“终端设备(terminal device)”可以被称为“用户设备(user equipment，UE)”、“用户终端(user terminal)”、“移动台(mobile station，MS)”、“移动终端(mobile terminal，MT)”、订户站(subscriber station)、移动单元(mobile unit)、订户单元(subscriber unit)、无线单元(wireless unit)、远程单元(remote unit)、移动设备(mobile device)、无线设备(wireless device)、无线通信设备(wireless communication device)、远程设备(remote device)、移动订户站(mobile subscriber station)、接入终端(access terminal)、移动终端(mobile terminal)、无线终端(wireless terminal)、远程终端(remote terminal)、手持设备(handset)、用户代理(user agent)、移动客户端(mobile client)、客户端(client)等。
在一些实施例中，获取数据、信息等可以遵照所在地国家的法律法规。
在一些实施例中，可以在得到用户同意后获取数据、信息等。
此外，本公开实施例的表格中的每一元素、每一行、或每一列均可以作为独立实施例来实施， 任意元素、任意行、任意列的组合也可以作为独立实施例来实施。
图1是根据本公开实施例示出的通信系统架构示意图。
如图1所示，通信系统100包括终端101、网络设备102。
在一些实施例中，终端101例如包括手机(mobile phone)、可穿戴设备、物联网设备、具备通信功能的汽车、智能汽车、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self-driving)中的无线终端设备、远程手术(remote medical surgery)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端设备中的至少一者，但不限于此。
在一些实施例中，网络设备102可以包括接入网设备和核心网设备的至少一者。
在一些实施例中，接入网设备例如是将终端接入到无线网络的节点或设备，接入网设备可以包括5G通信系统中的演进节点B(evolved NodeB，eNB)、下一代演进节点B(next generation eNB，ng-eNB)、下一代节点B(next generation NodeB，gNB)、节点B(node B，NB)、家庭节点B(home node B，HNB)、家庭演进节点B(home evolved nodeB，HeNB)、无线回传设备、无线网络控制器(radio network controller，RNC)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、基带单元(base band unit，BBU)、移动交换中心、6G通信系统中的基站、开放型基站(Open RAN)、云基站(Cloud RAN)、其他通信系统中的基站、Wi-Fi系统中的接入节点中的至少一者，但不限于此。
在一些实施例中，本公开的技术方案可适用于Open RAN架构，此时，本公开实施例所涉及的接入网设备间或者接入网设备内的接口可变为Open RAN的内部接口，这些内部接口之间的流程和信息交互可以通过软件或者程序实现。
在一些实施例中，接入网设备可以由集中单元(central unit，CU)与分布式单元(distributed unit，DU)组成的，其中，CU也可以称为控制单元(control unit)，采用CU-DU的结构可以将接入网设备的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU，但不限于此。
在一些实施例中，核心网设备可以是一个设备，包括一个或多个网元，也可以是多个设备或设备群，分别包括上述一个或多个网元中的全部或部分。网元可以是虚拟的，也可以是实体的。核心网例如包括演进分组核心(Evolved Packet Core，EPC)、5G核心网络(5G Core Network，5GCN)、下一代核心(Next Generation Core，NGC)中的至少一者。
可以理解的是，本公开实施例描述的通信系统是为了更加清楚的说明本公开实施例的技术方案，并不构成对于本公开实施例提出的技术方案的限定，本领域普通技术人员可知，随着系统架构的演变和新业务场景的出现，本公开实施例提出的技术方案对于类似的技术问题同样适用。
下述本公开实施例可以应用于图1所示的通信系统100、或部分主体，但不限于此。图1所示的各主体是例示，通信系统可以包括图1中的全部或部分主体，也可以包括图1以外的其他主体，各主体数量和形态为任意，各主体可以是实体的也可以是虚拟的，各主体之间的连接关系是例示，各主体之间可以不连接也可以连接，其连接可以是任意方式，可以是直接连接也可以是间接连接，可以是有线连接也可以是无线连接。
本公开各实施例可以应用于长期演进(Long Term Evolution，LTE)、LTE-Advanced(LTE-A)、LTE-Beyond(LTE-B)、SUPER 3G、IMT-Advanced、第四代移动通信系统(4th generation mobile communication system，4G)、)、第五代移动通信系统(5th generation mobile communication system，5G)、5G新空口(new radio，NR)、未来无线接入(Future Radio Access，FRA)、新无线接入技术(New-Radio Access Technology，RAT)、新无线(New Radio，NR)、新无线接入(New radio access，NX)、未来一代无线接入(Future generation radio access，FX)、Global System for Mobile communications(GSM(注册商标))、CDMA2000、超移动宽带(Ultra Mobile Broadband，UMB)、IEEE 802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(Ultra-WideBand，UWB)、蓝牙(Bluetooth(注册商标))、陆上公用移动通信网(Public Land Mobile Network，PLMN)网络、设备到设备(Device-to-Device，D2D)系统、机器到机器(Machine to Machine，M2M)系统、物联网(Internet of Things，IoT)系统、车联网(Vehicle-to-Everything，V2X)、利用其他通信方法的系统、基于它们而扩展的下一代系统等。此外，也可以将多个系统组合(例如，LTE或者LTE-A与5G的组合等)应用。
本公开实施例中，在LTE侧链路(sidelink，SL)载波聚合(carrier aggregation，CA)中，如果多个载波的PSCCH或PSSCH发送在时域上存在重叠，并且多个载波的发送总功率超过了终端确定的最大发送功率，即PCMAX。则可以对具有大优先值(large priority value)的对应载波上的发送进行功率缩减或进行丢弃(drop)，并循环该过程。直至发送的总功率不超过PCMAX。其中，PCMAX是终端基于自身配置确定的。其中，上述提到的大优先值可以认为是最大优先值。
在一些实施例中，对于LTE中SL传输模式3或4中，如果终端在一个载波上的SL发送在时域上与其它载波上的边链SL发送具有重叠。并且，总发送功率超过预设阈值。终端可以调整具有侧链路控制信息(sidelink control information，SCI)的SL发送的发送功率。该SCI的“优先级”字段可以被设置为重叠SL发送所有“优先级”值中的最大值。在这种情况下，不指定对SL发送功率的调整的计算。如果在该功率调整之后发送功率仍然超过上述预设阈值，则终端应当丢弃其SCI中具有最大“优先级”字段的SL发送。并且在未丢弃的载波上重复该过程。当在两个或多个载波上时域重叠的SL发送具有相同的“优先级”字段值时，没有指定终端调整哪个SL发送。
在一些实施例中，在NR SL中的终端需要同时反馈多个PSFCH场景下，如果需要反馈的多个PSFCH数量小于或等于终端支持的最大数量，并且终端的发送功率总和小于或等于PCMAX。则NTX,PSFCH＝Nsch,T,XPS。其中，NTX,PSFCH表示终端实际发送PSFCH的数量，Nsch,TX,PSFCH表示终端预计发送PSFCH的数量。因此，在需要反馈的多个PSFCH数量小于或等于终端支持的最大数量的情况下，NTX,PSFCH应当等于Nsch,TX,PSFCH。同时，PPSFCH,K(i)＝PPSFC,Hone。其中，PPSFCH,k(i)表示优先级为i的K个PSFCH的发送功率，PPSFCH,one表示终端确定的一个PSFCH的发送功率。
其中，PPSFCH,one可以通过公式1得到。
PPSFCH,one＝P0,PSFCH+10log10(2μ)+αPSFCH·PL
……公式1
其中，P0,PSFCH表示目标接收功率，μ表示对应的子载波间隔(subcarrier spacing，SCS)大小，α为路损补偿系数，PL表示对应路损(pathloss，PL)的路损值。PPSFCH,one的单位可以是dBm。
在一些实施例中，如果终端发送PSFCH的发送功率总和大于PCMAX，则可以使得其中，Mi可以表示优先级为i的PSFCH数量总和。K可以是满足的最大值。其中，i为优先级值，优先级值越小，优先级越高。可以确定满足优先级值小于等于i的多个PSFCH的发送功率总和需要小于或等于PCMAX的情况下，PSFCH达到的最大数量时的优先级值，即上述提到的K。在这种情况下，可以根据终端的实现，确定NTX,PSFCH的数值，以及PPSFCH,K(i)＝min(PCMAX-10log10(NTX,PSFCH)，PPSFCH,one)。
可以理解的是，的情况，主要对应在优先级值小于或等于K+1时，发送PSFCH的数量超过了终端支持的最大数量，优先级值小于或等于K时，发送PSFCH的数量未超过了终端支持的最大数量。但实际上，在优先级值为K+1的多个PSFCH中，终端仍然可以发送其中的部分PSFCH，并且满足发送PSFCH的数量未超过了终端支持的最大数量的情况。
在一些实施例中，对于需要反馈的多个PSFCH数量大于终端支持的最大数量，并且终端的发送功率总和小于或等于PCMAX。区别于上述实施例的是，NTX,PSFCH＝NMAX,PSFCH。其中，NMAX,PSFCH表示终端支持发送PSFCH的最大数量。
在一些实施例中，对于一个终端在同一个时机(occasion)进行的PSFCH反馈。有可能是对多个资源池(resource pool)同时进行反馈。一个资源池中的部分资源可以用于PSFCH。对于PSFCH的功率控制参数，可以位于特定字段中。例如，特定字段可以是SL-ResourcePoolIE。因此，可以认为是针对每个(per)资源池配置的。其中，固定了多个PSFCH资源存在重叠的资源池，这些资源池 内的功率控制参数配置为相同值。
例如，可以参考如下配置：
在一些实施例中，在NR SL CA场景中，若不同载波的PSFCH产生了重叠，则也需要考虑此时如何对PSFCH进行功率控制。当然，还可以确定发送PSFCH的个数。
在一些实施例中，不同载波的功率控制参数可以配置为不同的值。
图2是根据本公开实施例示出的一种侧链路通信方法交互示意图。如图2所示，本公开实施例涉及侧链路通信方法，用于通信系统100，上述方法包括：
步骤S2101，第一终端确定需要发送的PSFCH，并对需要发送的PSFCH进行调整。
在一些实施例中，第一终端可以确定需要发送的多个PSFCH，以及发送该数量PSFCH所需要的发送功率。第一终端可以根据上述需要发送的PSFCH数量、发送功率和终端所支持的最大发送数量、最大发送功率的关系，确定是否对需要发送的PSFCH进行调整，以及采用何种方式进行调整。
在一些实施例中，终端需要发送的多个PSFCH，为多个载波对应的PSFCH。
在一些实施例中，终端需要发送的多个载波对应的PSFCH中，至少部分载波的PSFCH之间存在时域重叠。
例如，假设终端需要发送5个载波对应的PSFCH。其中的任意两个、三个、四个或五个载波对应的PSFCH存在时域重叠。
在一些实施例中，终端需要发送的多个PSFCH的数量可以为y1个。其中，y1小于或等于终端允许发送的PSFCH的最大数量。
在一些实施例中，终端需要发送的多个PSFCH的数量可以为y3个。其中，y3大于终端允许发送的PSFCH的最大数量。
在一些实施例中，第一终端需要发送的PSFCH，可以是多个载波对应的PSFCH。
在一些实施例中，第一终端可以是上述提到的终端101。
在一些实施例中，第一终端需要发送PSFCH为y3个。第一终端可以根据PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH。其中，y3大于第一阈值，y1小于或等于第一阈值。
例如，假设y3为10，第一阈值为8。则第一终端可以确定10个PSFCH中优先级最低的PSFCH，并将该PSFCH丢弃。PSFCH数量剩余9个，仍然大于第一阈值。则第一终端可以确定剩余的9个PSFCH中，优先级最低的PSFCH，并将该PSFCH丢弃。PSFCH数量剩余8个与第一阈值相同。第一终端则停止丢弃PSFCH。此时，y1为8。
在一些实施例中，第一阈值可以表示终端所支持发送PSFCH的最大数量。例如，可以记为NMAX,PSFCH。
在一些实施例中，第一阈值可以是终端基于自身的终端能力确定的。例如，终端根据当前电量、硬件的配置、软件的配置等，确定终端所支持发送PSFCH的最大数量。当然，具体终端基于哪些能力确定，可以根据实际情况进行任意选择，本公开不作限定。
在一些实施例中，第一终端需要发送的PSFCH数量例如为y3个。当y3大于NMAX,PSFCH的情况下，表示第一终端最多只能发送NMAX,PSFCH个PSFCH。因此，第一终端需要对y3个PSFCH进行调整。如，第一终端基于PSFCH对应的优先级高低，从y3个PSFCH中依次丢弃优先级最低的PSFCH。比如，第一终端可以根据发送PSFCH的优先级值确定对应PSFCH的优先级。其中，优先级值越大表示优先级越低。
例如，第一终端可以优先丢弃优先级值最大的PSFCH，并再次确定丢弃后的PSFCH数量是否大于NMAX,PSFCH。对于丢弃后的PSFCH数量大于NMAX,PSFCH的情况下，则继续丢弃剩余PSFCH中优先级值最大的PSFCH，即优先级最低的PSFCH。直至剩余的PSFCH数量小于或等于NMAX,PSFCH。该数量可以是y1，这种情况下y1通常可以等于NMAX,PSFCH。
在一些实施例中，发送PSFCH对应的至少一个带宽分别对应一个第二阈值，各个带宽对应的第二阈值之和等于第一阈值。其中，带宽可以包括频带(band)和载波中的至少一者。一个频带可以 包括至少一个载波。其中，各带宽对应的第二阈值之和，可以小于或等于第一阈值。
例如，当带宽为频带时，可以针对每个频带，对应有单独的第三阈值。这种情况下，第三阈值即上第二阈值。其中，各频带对应的第三阈值之和，可以小于或等于第一阈值。
又例如，当带宽为载波时，可以针对每个载波，对应有单独的第四阈值。这种情况下，第四阈值即上第二阈值。其中，各载波对应的第四阈值之和，可以小于或等于第一阈值。
在一些实施例中，第二阈值可以是第R个带宽对应的第二阈值，即第二阈值可以为第R个带宽对应的最大PSFCH数量。R为正整数。其中，第R个带宽对应的最大PSFCH数量，即表示第R个带宽上允许发送的最大PSFCH数量。
在一些实施例中，第一终端可以针对不同的带宽，分别进行调整。
如，针对第R个带宽，第一终端按照待发送的PSFCH对应的优先级高低，从第R个带宽对应的待发送的PSFCH中依次丢弃优先级最低的PSFCH。直至第R个带宽对应的PSFCH数量小于或等于该第R个带宽对应的最大PSFCH数量。其中，第R个带宽在经过PSFCH调整后的PSFCH数量，可以称为y4。即，第R个带宽对应的y4个待发送的PSFCH。
例如，针对第R个带宽，第一终端按照PSFCH对应的优先级高低，从第R个带宽对应的PSFCH中丢弃优先级最低的PSFCH。然后第一终端基于剩余的PSFCH再次确定，第R个带宽对应的PSFCH数量是否小于或等于该第R个带宽对应的最大PSFCH数量。对于第R个带宽对应的PSFCH数量仍然大于该第R个带宽对应的最大PSFCH数量的情况下，则继续丢弃剩余PSFCH中优先级最低的PSFCH。直至第R个带宽对应的PSFCH数量小于或等于该第R个带宽对应的最大PSFCH数量。
在一些实施例中，发送PSFCH所占用的全部带宽中，各个带宽对应的y4之和应当等于y1。
在一些实施例中，在终端需要发送的PSFCH数量小于或等于NMAX,PSFCH的情况下，y1可以等于终端需要发送的多个载波对应的PSFCH数量。
在一些实施例中，在终端需要发送的PSFCH数量大于NMAX,PSFCH的情况下，y1可以等于NMAX,PSFCH。
在一些实施例中，对于不同的频带，可以分别对应有各自的NMAX,PSFCH，可以记为NMAX,PSFCH,f。NMAX,PSFCH,f可以表示为频带f对应的NMAX,PSFCH。
在一些实施例中，第一终端需要发送的PSFCH为y1个，这种情况下，由于y1小于或等于第一阈值。则第一终端可以不对PSFCH进行调整。
可以认为，第一终端发送的多个载波对应的PSFCH，具有y1个待发送的PSFCH。
在一些实施例中，y1个待发送的PSFCH可以认为是满足NMAX,PSFCH的终端需要发送的PSFCH数量。这种情况下，可以根据y1个待发送的PSFCH的发送总功率，确定是否对y1个待发送的PSFCH进行功率调整或PSFCH丢弃。
在一些实施例中，对于y1个待发送的PSFCH的发送总功率大于预先设定的第一最大发送功率的情况，第一终端可以对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH。其中，y2个PSFCH的发送总功率可以称为第一功率。第一功率小于或等于第一最大发送功率。y2小于或等于y1。
可以理解的是，第一最大发送功率可以认为是终端预先配置的最大发送功率。例如，终端可以根据自身配置确定该第一最大发送功率。
在一些实施例中，第一最大发送功率可以记为PCMAX。
例如，y1个待发送的PSFCH的发送总功率大于PCMAX的情况下，第一终端需要对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，进而得到y2个PSFCH。使得y2个PSFCH的发送总功率小于或等于PCMAX，进而满足发送要求的限制。
可以明白的是，PCMAX可以是根据实际需求确定的第一最大发送功率，当终端发送功率超过PCMAX则可以认为是不满足发送要求的限制。PCMAX可以是终端基于自身配置确定的，具体可以根据实际情况选择合适的取值，本公开不作限定。
在一些实施例中，y2小于或等于y1，第一终端可以对y1个待发送的PSFCH进行功率降低和/或PSFCH丢弃。这种情况下，可以仅对部分PSFCH进行功率降低和/或丢弃。
例如，第一终端可以基于待发送的PSFCH对应的优先级高低，对y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低。第一终端确定功率降低后的y1个待发送的PSFCH对应的发送总功 率是否大于第一最大发送功率。
一种情况下，对于功率降低后的y1个待发送的PSFCH对应的发送总功率小于或等于第一最大发送功率的情况，y2仍然等于y1。第一终端仅对优先级最低的PSFCH进行了功率降低。
另一种情况下，对于功率降低后的y1个待发送的PSFCH对应的发送总功率仍然大于第一最大发送功率的情况，第一终端可以丢弃该进行功率降低的PSFCH，即丢弃y1个待发送的PSFCH中优先级最低的PSFCH。第一终端再次确定丢弃PSFCH后剩余的PSFCH对应的发送总功率是否大于第一最大发送功率。
一种情况下，对于丢弃PSFCH后剩余的PSFCH对应的发送总功率小于或等于第一最大发送功率的情况，y2小于y1。第一终端丢弃优先级最低的PSFCH，以保证y2个PSFCH的发送总功率小于或等于PCMAX。
另一种情况下，对于丢弃PSFCH后剩余的PSFCH对应的发送总功率仍然大于第一最大发送功率的情况，第一终端可以重复上述过程，即从剩余的PSFCH中将优先级最低的PSFCH进行功率降低或者丢弃。直至剩余的PSFCH对应的发送总功率小于或等于第一最大发送功率，得到y2个PSFCH。
例如，针对一个载波上发送的PSFCH，可以保证该载波上的发送功率为以下公式。
PPSFCH,one,c＝P0,PSFCH,c+10log10(2μ)+αPSFCH,c·PL
……公式2
其中，c表示载波索引(index)。PPSFCH,one,c则表示每个载波上功率控制之后得到的PSFCH的发送功率值。
在一些实施例中，当存在y1个待发送的PSFCH中优先级最低的PSFCH为多个的情况，则第一终端可以基于第一终端自身的终端实现，确定对哪个PSFCH进行功率降低和/或丢弃。
例如，第一终端确定对y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低，但此时存多个PSFCH的优先级相同，均为最低。第一终端可以根据其自身的终端实现，决定对多个优先级最低的PSFCH中的某一个PSFCH进行功率降低。当然，还可以对该PSFCH进行丢弃。
又例如，第一终端确定对经过PSFCH丢弃后，剩余的待发送的PSFCH中优先级最低的PSFCH进行功率降低，但此时存多个PSFCH的优先级相同，均为最低。第一终端可以根据其自身的终端实现，决定对多个优先级最低的PSFCH中的某一个PSFCH进行功率降低。当然，还可以对该PSFCH进行丢弃。
当然，具体的终端实现可以是预先存储在终端中的预设规则，或者终端基于自身电量、硬件条件、软件条件的情况决定的，本公开对终端的具体实现不作限定。
在一些实施例中，对于主载波(primary carrier)或默认载波(default carrier)对应的PSFCH，第一终端不进行功率降低和/或丢弃。
例如，当终端确定对y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低，但该最低优先级的PSFCH为主载波或默认载波上发送的PSFCH。则第一终端不对该PSFCH进行功率降低和/或丢弃。
当然，主载波或默认载波可以是预先配置好的，可以根据实际情况定义哪些载波为主载波，哪些载波为默认载波，本公开不做具体限定。
在一些实施例中，y2等于y1，第一终端可以对y1个待发送的PSFCH中的全部PSFCH进行功率降低。这种情况下，不会对PSFCH的数量进行变化，而是对全部PSFCH进行功率降低。
在一些实施例中，可以针对每个载波进行单独的功率调整，这主要考虑到不同载波上资源池网络设备配置或终端预配置的功率控制参数不同。
在一些实施例中，第x个载波对应PSFCH的发送总功率，可以根据第x个载波对应的PSFCH数量，以及第x个载波对应的PSFCH发送功率确定。其中，x为正整数。第x个载波对应的PSFCH发送功率，表示第x个载波上单个PSFCH的发送功率。
例如，每个载波内各PSFCH对应的PPSFCH,one,c可以参考公式2确定。第x个载波对应PSFCH的发送总功率，可以参考公式3确定。
其中，若Nsch,TX,PSFCH,c＝0，则ac＝0；其余情况下，ac＝1。也就是说，当某个载波上没有需要发送的PSFCH，则该载波上的发送功率为0。其余情况下，该载波上的发送功率，可以等于该载波上发送的PSFCH数量取对数后乘以10，与PPSFCH,one,c(dBm)的和。C表示全部载波的数量。每个载波内的PSFCH均按照PPSFCH,one,c进行发送。
在一些实施例中，终端在对y1个待发送的PSFCH中的全部PSFCH进行功率降低的情况下，可以在进行功率降低之前，根据终端自身实现确定满足的NTX,PSFCH。
其中，Mi,c表示为每个载波使得总功率小于或等于PCMAX的对应优先级的PSFCH个数。
在一些实施例中，第x个载波对应的PSFCH发送功率基于第一PSFCH发送功率和第二PSFCH发送功率确定。其中，第一PSFCH发送功率表示终端确定第x个载波上单个PSFCH的发送功率；第二PSFCH发送功率表示第x个载波上单个PSFCH被配置的发送功率。第一PSFCH发送功率基于第二PSFCH发送功率、第x个载波对应的PSFCH的发送总功率和第一最大发送功率确定。第二PSFCH发送功率为网络设备配置或终端预配置的。
在一些实施例中，第一PSFCH发送功率为第一终端实际发送的单个PSFCH的发送功率。
例如，第x个载波对应的PSFCH发送功率可以记为PPSFCH,K(i)，表示第x个载波上优先级值在K以内的各PSFCH对应的发送功率。
其中，PPSFCH,K(i)可以根据公式4确定。
PPSFCH,K(i)＝min(Pnew，PPSFCH,one,c)
……公式4
其中，Pnew即上述提到的第一PSFCH发送功率，PPSFCH,one,c即上述提到的第二PSFCH发送功率。Pnew可以通过公式5确定。
在一些实施例中，对于Mi＝0的情况，即表示针对当前载波上，优先级最高的全部PSFCH对应的发送总功率也大于PCMAX，则无法同时发送多个PSFCH。因此，对于该载波仅需满足PPSFCH,one,c≤PCMAX即可。即，单独发送PSFCH时，保证该PSFCH的发送功率小于或等于PCMAX。
因此，可以认为第一PSFCH发送功率表示终端确定的，用于第x个载波对应的PSFCH的发送功率。当第x个载波对应的PSFCH的发送总功率大于PCMAX的情况下，Pnew通常小于PPSFCH,one,c；当第x个载波对应的PSFCH的发送总功率小于PCMAX的情况下，Pnew通常大于PPSFCH,one,c。
在一些实施例中，若第R个带宽对应的待发送的PSFCH的发送总功率大于第R个带宽对应的第二最大发送功率，对第R个带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃。
其中，发送PSFCH所占用的全部带宽中，各个带宽对应的第二最大发送功率之和等于第一最大发送功率。
可以明白的是，第二最大发送功率可以认为是第R个带宽对应的最大发送功率。即表示第一终端在该第R个带宽上允许的发送功率的最大值。当第一终端确定在第R个带宽对应的待发送的PSFCH的发送总功率，超过该带宽对应的第二最大发送功率的情况下。第一终端可以对该带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃。如进行功率下降或丢弃第R个带宽中的部分PSFCH。
在一些实施例中，第二最大发送功率可以基于高层信令配置。
在一些实施例中，第二最大发送功率可以基于全部带宽对应待发送的PSFCH的发送总功率、第 R个带宽对应待发送的PSFCH的发送总功率和最大发送功率确定。
其中，全部带宽对应待发送的PSFCH的发送总功率，表示第一终端需要发送的所有PSFCH所需要的发送功率总和。
第R个带宽对应待发送的PSFCH的发送总功率，表示第一终端在第R个带宽上，需要发送的所有PSFCH所需要的发送功率总和。
例如，第二最大发送功率可以通过公式6确定。
其中，f表示为不同的频带，PPSFCH,one,f,c表示为不同频带上对应的载波的功率控制参数。Nsch,TX,PSFCH,f,c表示为不同频带的每个载波上发送的PSFCH数量。fmin表示频带上载波索引的最小值，fmax表示频带上载波索引的最大值。若Nsch,TX,PSFCH,f,c＝0，则af,c＝0；其余情况下，af,c＝1。
在一些实施例中，第W个频带对应的PSFCH的发送总功率，基于第W个频带内各载波对应的PSFCH的发送总功率确定。其中，W为正整数。
在一些实施例中，第一终端还可以丢弃特定载波上待发送的所有PSFCH。其中，特定载波可以为第W个频带内满足第一条件的载波。
在一些实施例中，第一条件包括同时发送多个载波限制。
例如，假设同时发送多个载波限制为最多可以同时发送6个载波，但第一终端需要同时发送的载波为8个，即多于同时发送多个载波限制的要求。则第一终端需要丢弃掉特定载波对应的PSFCH。
例如，当终端可以基于载波上发送PSFCH的优先级，选择哪些载波作为特定载波，并丢弃该特定载波对应的PSFCH。
如，当PSFCH优先级最低的载波为1个，则可以将该载波作为特定载波。并丢弃该特定载波对应的PSFCH。之后，基于剩余载波继续确定是否小于或等于同时发送6个载波的要求。
又如，当PSFCH优先级最低的载波为多个，则可以将该多个载波均作为特定载波。并丢弃该多个特定载波对应的PSFCH。之后，基于剩余载波继续确定是否小于或等于同时发送6个载波的要求。
再如，当PSFCH优先级最低的载波为多个，终端可以根据自身实现，决定将哪几个PSFCH对应的载波作为特定载波。并丢弃该特定载波对应的PSFCH。之后，基于剩余载波继续确定是否小于或等于同时发送6个载波的要求。
在上述示例中，当剩余载波仍然大于同时发送6个载波的要求，则第一终端基于剩余的载波继续采用上述一种或多种方式确定特定载波，并丢弃特定载波对应的PSFCH。直至剩余载波小于或等于同时发送6个载波的要求。
在一些实施例中，第一条件包括同时发送多个载波限制的情况下，第一终端可以按照载波内待发送PSFCH的优先级高低，从第W个频带内依次丢弃待发送PSFCH的优先级最低的载波所对应的所有PSFCH。直至第W个频带内的载波数量小于或等于同时发送多个载波限制的载波数量。
例如，第一终端可以确定所有载波待发送的PSFCH中优先级最低的PSFCH，并丢弃掉该PSFCH对应的载波内所有PSFCH。第一终端基于剩余载波确定是否小于或等于同时发送多个载波限制的载波数量。在剩余载波仍然大于同时发送多个载波限制的载波数量的情况下，第一终端基于剩余载波，确定剩余载波中，优先级最低的PSFCH对应的载波，并丢弃该载波内所有PSFCH。直至剩余载波小于或等于同时发送多个载波限制的载波数量。
在一些实施例中，第一条件包括载波组合要求。
例如，载波组合要求可以是必须发送连续的载波。因此，假设第一终端需要发送的载波为载波0、载波2和载波3，则第一终端需要丢弃载波0对应的PSFCH。直至第W个频带内的载波数量满足载波组合要求的限制。
又例如，载波组合要求还可以直接限制允许发送的部分载波组合。则终端需要丢弃第W个频带内的载波组合要求之外的其它载波对应的全部PSFCH。直至第W个频带内的载波数量满足载波组合要求的限制。
在一些实施例中，第一条件包括射频重调时间限制。
例如，射频重调时间限制可以是切换载波所需要的时间限制。比如，可以假设第一终端切换载波需要经过2个时隙(slot)。对于相邻的两个slot，如slot1和slot2，其中slot1发送载波0对应的PSFCH和载波1对应的PSFCH，slot2发送载波0对应的PSFCH和载波2对应的PSFCH。对于载波0，在slot1和slot2中都需要发送，并不涉及到载波的切换。因此，slot2上可以发送载波0对应的PSFCH。对于载波2，由于在slot1上发送的是载波1对应的PSFCH，因此对于slot2，则需要进行载波切换。也就是说，需要将载波1切换为载波2。但由于载波切换需要2个slot。因此，在slot2内无法完成载波1切换到载波2过程。所以，对于slot2内第一终端只能选择丢弃载波2对应的PSFCH。则slot2内第一终端只能发送载波0对应的PSFCH，而无法发送载波2对应的PSFCH。
可以理解的是，上述各实施例中，对于PSFCH和/或载波内PSFCH进行功率降低和丢弃中的至少一个时，可以在进行一次功率降低和/或丢弃后，基于剩余的PSFCH和/或载波再次确定是否符合相应的要求。并重复上述功率降低和/或丢弃，直至剩余的PSFCH和/或载波符合相应的要求。
步骤S2102，第一终端采用第一功率向第二终端发送多个载波对应的PSFCH。
在一些实施例中，第一终端采用第一功率向第二终端发送多个载波对应的PSFCH。
在一些实施例中，第二终端接收采用第一功率发送的多个载波对应的PSFCH。
在一些实施例中，第一终端采用第二功率向第二终端发送不同带宽对应的PSFCH。
在一些实施例中，第二终端接收采用第二功率发送的不同带宽对应的PSFCH。
其中，多个带宽对应的PSFCH之和，与采用第一功率发送和/或接收的多个载波对应的PSFCH相同。多个带宽对应的第二功率之和等于第一功率。
在一些实施例中，“侧链路”、“侧行(side)”、“侧行链路(sidelink)”、“侧行通信”、“侧行链路通信”、“直连”、“直连链路”、“直连通信”、“直连链路通信”等术语可以相互替换。
在一些实施例中，“发送”、“发射”、“上报”、“下发”、“传输”、“双向传输”、“发送和/或接收”等术语可以相互替换。
本公开实施例所涉及的侧链路通信方法可以包括步骤S2101～步骤S2102中的至少一者。例如，步骤S2102可以作为独立实施例来实施，但不限于此。
在一些实施例中，步骤S2101是可选的，在不同实施例中可以对这些步骤中的一个或多个步骤进行省略或替代。
在一些实施例中，可参见图2所对应的说明书之前或之后记载的其他可选实现方式。
图3a是根据一示例性实施例示出的一种侧链路通信方法流程图。如图3a所示，本公开实施例涉及侧链路通信方法，可以在第一终端上执行，上述方法包括：
步骤S3101，确定需要发送的PSFCH，并对需要发送的PSFCH进行调整。
步骤S3101的可选实现方式可以参见图2的步骤S2101的可选实现方式、及图2所涉及的实施例中其他关联部分，此处不再赘述。
步骤S3102，采用第一功率发送多个载波对应的PSFCH。
步骤S3102的可选实现方式可以参见图2的步骤S2102的可选实现方式、及图2所涉及的实施例中其他关联部分，此处不再赘述。
图3b是根据一示例性实施例示出的另一种侧链路通信方法流程图。如图3b所示，本公开实施例涉及侧链路通信方法，可以在第一终端上执行，上述方法包括：
步骤S3201，采用第一功率发送多个载波对应的PSFCH。
步骤S3201的可选实现方式可以参见图2的步骤S2102的可选实现方式、图3a的步骤S3102的可选实现方式、及图2所涉及的实施例中其他关联部分、图3a所涉及的实施例中其他关联部分，此处不再赘述。
在一些实施例中，多个载波对应的PSFCH具有y1个待发送的PSFCH；方法还包括：若y1个待发送的PSFCH的发送总功率大于预先设定的第一最大发送功率，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH，其中，y2个PSFCH的发送总功率为第一功率，y2小于或等于y1。
在一些实施例中，方法还包括：确定y3个待发送的PSFCH，其中，y3大于第一阈值；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，y1小于或等于第一阈值。
在一些实施例中，发送PSFCH对应的至少一个带宽分别对应一个第二阈值，各个带宽对应的第二阈值之和等于第一阈值，其中，带宽包括频带和载波中的至少一者，每个频带包括至少一个载波。
在一些实施例中，第二阈值为第R个带宽对应的最大PSFCH数量，R为正整数；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，包括：按照PSFCH对应的优先级高低，从第R个带宽对应的待发送的PSFCH中依次丢弃优先级最低的PSFCH，直至第R个带宽对应的PSFCH数量小于或等于第R个带宽对应的最大PSFCH数量，得到第R个带宽对应的y4个待发送的PSFCH；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的y4之和等于y1。
在一些实施例中，第一阈值基于终端自身的终端能力确定。
在一些实施例中，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，包括：若第R个带宽对应的待发送的PSFCH的发送总功率大于第R个带宽对应的第二最大发送功率，对第R个带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的第二最大发送功率之和等于第一最大发送功率；第二最大发送功率基于高层信令配置，或第二最大发送功率基于全部带宽对应待发送的PSFCH的发送总功率、第R个带宽对应待发送的PSFCH的发送总功率和第一最大发送功率确定，R为正整数。
在一些实施例中，带宽包括频带，第W个频带对应的PSFCH的发送总功率基于第W个频带内各个载波对应的PSFCH的发送总功率确定，W为正整数。
在一些实施例中，方法还包括：丢弃特定载波上待发送的所有PSFCH，其中，特定载波为第W个频带内满足第一条件的载波，W为正整数；第一条件包括以下至少一项：同时发送多个载波限制；载波组合要求；射频重调时间限制。
在一些实施例中，第一条件包括同时发送多个载波限制；丢弃特定载波上待发送的所有PSFCH包括：按照载波内待发送PSFCH的优先级高低，从第W个频带内依次丢弃待发送PSFCH的优先级最低的载波所对应的PSFCH；直至第W个频带内的载波数量小于或等于同时发送多个载波限制的载波数量。
在一些实施例中，y2小于y1；对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH包括：基于待发送的PSFCH对应的优先级高低，对y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低；若进行功率降低后的发送总功率大于第一最大发送功率，丢弃进行功率降低的PSFCH；直至PSFCH的发送总功率小于或等于预先设定的第一最大发送功率，得到y2个PSFCH。
在一些实施例中，y1个待发送的PSFCH中优先级最低的PSFCH为多个，基于终端自身的终端实现确定进行功率降低和/或丢弃的PSFCH。
在一些实施例中，主载波或默认载波对应的PSFCH不进行功率降低和/或丢弃。
在一些实施例中，y2等于y1；第x个载波对应PSFCH的发送总功率由第x个载波对应的PSFCH数量，以及第x个载波对应的PSFCH发送功率确定，其中，x为正整数，第x个载波对应的PSFCH发送功率表示第x个载波上单个PSFCH的发送功率。可以理解的是，第x个载波为终端发送多个载波中的一个载波。
在一些实施例中，第x个载波对应的PSFCH发送功率基于第一PSFCH发送功率和第二PSFCH发送功率确定；其中，第一PSFCH发送功率表示终端确定第x个载波上单个PSFCH的发送功率，第二PSFCH发送功率表示第x个载波上单个PSFCH被配置的发送功率，第一PSFCH发送功率基于第二PSFCH发送功率、第x个载波对应的PSFCH的发送总功率和第一最大发送功率确定，第二PSFCH发送功率为网络设备配置或终端预配置的。
图4是根据一示例性实施例示出的又一种侧链路通信方法流程图。如图4所示，本公开实施例涉及侧链路通信方法，可以在第二终端上执行，上述方法包括：
步骤S4101，获取采用第一功率发送的多个载波对应的PSFCH。
步骤S4101的可选实现方式可以参见图2的步骤S2102的可选实现方式、及图2所涉及的实施例中其他关联部分，此处不再赘述。
在一些实施例中，多个载波对应的PSFCH具有y1个待发送的PSFCH；接收到的多个载波对应的PSFCH，通过以下方式确定：若y1个待发送的PSFCH的发送总功率大于预先设定的第一最大发送功率，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH，其中，y2个PSFCH的发送总功率为第一功率，y2小于或等于y1。
在一些实施例中，接收到的多个载波对应的PSFCH，通过以下方式确定：确定y3个待发送的PSFCH，其中，y3大于第一阈值；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，y1小于或等于第一阈值。
在一些实施例中，发送PSFCH对应的至少一个带宽分别对应一个第二阈值，各个带宽对应的第 二阈值之和等于第一阈值，其中，带宽包括频带和载波中的至少一者，每个频带包括至少一个载波。
在一些实施例中，第二阈值为第R个带宽对应的最大PSFCH数量，R为正整数；基于PSFCH对应的优先级高低，从y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到y1个待发送的PSFCH，包括：按照PSFCH对应的优先级高低，从第R个带宽对应的待发送的PSFCH中依次丢弃优先级最低的PSFCH，直至第R个带宽对应的PSFCH数量小于或等于第R个带宽对应的最大PSFCH数量，得到第R个带宽对应的y4待发送的个PSFCH；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的y4之和等于y1。
在一些实施例中，第一阈值基于终端自身的终端能力确定。
在一些实施例中，对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，包括：若第R个带宽对应的待发送的PSFCH的发送总功率大于第R个带宽对应的第二最大发送功率，对第R个带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃；其中，发送PSFCH所占用的全部带宽中，各个带宽对应的第二最大发送功率之和等于第一最大发送功率；第二最大发送功率基于高层信令配置，或第二最大发送功率基于全部带宽对应待发送的PSFCH的发送总功率、第R个带宽对应待发送的PSFCH的发送总功率和第一最大发送功率确定，R为正整数。
在一些实施例中，带宽包括频带，第W个频带对应的PSFCH的发送总功率基于第W个频带内各个载波对应的PSFCH的发送总功率确定，W为正整数。
在一些实施例中，接收到的多个载波对应的PSFCH，通过以下方式确定：丢弃特定载波上待发送的所有PSFCH，其中，特定载波为第W个频带内满足第一条件的载波，W为正整数；第一条件包括以下至少一项：同时发送多个载波限制；载波组合要求；射频重调时间限制。
在一些实施例中，第一条件包括同时发送多个载波限制；丢弃特定载波上待发送的所有PSFCH包括：按照载波内待发送PSFCH的优先级高低，从第W个频带内依次丢弃待发送PSFCH的优先级最低的载波所对应的PSFCH；直至第W个频带内的载波数量小于或等于同时发送多个载波限制的载波数量。
在一些实施例中，y2小于y1；对y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH包括：基于待发送的PSFCH对应的优先级高低，对y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低；若进行功率降低后的发送总功率大于第一最大发送功率，丢弃进行功率降低的PSFCH；直至PSFCH的发送总功率小于或等于预先设定的第一最大发送功率，得到y2个PSFCH。
在一些实施例中，y1个待发送的PSFCH中优先级最低的PSFCH为多个，基于终端自身的终端实现确定进行功率降低和/或丢弃的PSFCH。
在一些实施例中，主载波或默认载波对应的PSFCH不进行功率降低和/或丢弃。
在一些实施例中，y2等于y1；第x个载波对应PSFCH的发送总功率由第x个载波对应的PSFCH数量，以及第x个载波对应的PSFCH发送功率确定，其中，x为正整数，第x个载波对应的PSFCH发送功率表示第x个载波上单个PSFCH的发送功率。可以理解的是，第x个载波为终端发送多个载波中的一个载波。
在一些实施例中，第x个载波对应的PSFCH发送功率基于第一PSFCH发送功率和第二PSFCH发送功率确定；其中，第一PSFCH发送功率表示终端确定第x个载波上单个PSFCH的发送功率，第二PSFCH发送功率表示第x个载波上单个PSFCH被配置的发送功率，第一PSFCH发送功率基于第二PSFCH发送功率、第x个载波对应的PSFCH的发送总功率和第一最大发送功率确定，第二PSFCH发送功率为网络设备配置或终端预配置的。
图5是根据一示例性实施例示出的再一种侧链路通信方法流程图。如图5所示，本公开实施例涉及侧链路通信方法，上述方法包括：
步骤S5101，第一终端采用第一功率向第二终端发送的多个载波对应的PSFCH。
步骤S5101的可选实现方式可以参见图2的步骤S2102的可选实现方式、图3a的步骤S3102的可选实现方式、图3b的步骤S3201的可选实现方式、图4的步骤S4101的可选实现方式、及图2所涉及的实施例中其他关联部分、图3a所涉及的实施例中其他关联部分、图3b所涉及的实施例中其他关联部分、图4所涉及的实施例中其他关联部分，此处不再赘述。
接下来，本公开将以更为详细的实施例对上述方案进行描述。
在一些实施例中，可以复用了LTE SL CA的机制，且不对全部的PSFCH的发送功率进行缩放。
在一些实施例中，这里保证在一个载波上的功率为公式2示出的。
在一些实施例中，如果待发送的PSFCH个数大于NMAX,PSFCH，则按照优先级值由大到小(优先级 值越大优先级越低)，丢弃掉对应个数的PSFCH，其中NMAX,PSFCH为终端基于其自身能力确定的每个频带内的支持的最大PSFCH发送个数
在一些实施例中，如果是每个频带/载波配置不同的NMAX,PSFCH值，则优先对每个频带/载波按照优先级值由大到小，丢弃掉对应频带/载波上的PSFCH发送，然后再执行后续的步骤。
在一些实施例中，如果在一个PSFCH时机(occasion)上(剩余)PSFCH发送的总功率大于PCMAX，则会对最大优先级值的对应的PSFCH的发送进行功率缩减(这里与LTE的区别是，LTE的PSCCH和PSSCH在一个载波上只能发送一个，但PSFCH可以在一个carrier上发送多个)，或者进行丢弃，并循环这个过程，直到发送的总功率不超过PCMAX；
在一些实施例中，对于相同优先级的PSFCH，基于实现确定对哪个PSFCH进行功率缩减或者丢弃。
在一些实施例中，如果配置了主载波或默认载波，当前机制保证在主载波或默认载波上不进行PSFCH的丢弃或功率缩减。
在一些实施例中，参考NR SL PSFCH的功率控制机制(带内(intra-band)CA的情况，每个载波进行功控，NMAX,PSFCH为每个频带配置)
在一些实施例中，可以对全部的PSFCH的发送功率进行缩放，此时需要考虑不同载波上的资源池内功控参数不同，则此时每个PSFCH的发送功率要考虑每个载波的参数，如参考公式2和/或公式3。
在一些实施例中，可以类似上述示例中的相关机制，UE基于实现选择满足
其中，Mi,c表示为每个载波使得总功率小于或等于PCMAX的对应优先级的PSFCH个数的和。K为优先级值的最大值。
在一些实施例中，可以参考公式4和公式5。
在一些实施例中，如果Mi＝0则对于每个载波只需要满足PPSFCH,one,c≤PCMAX。
在一些实施例中，对于待发送PSFCH大于NMAX,PSFCH的情况，则按照优先级只能发送NMAX,PSFCH个PSFCH，此时Nsch,TX,PSFCH＝NMAX,PSFCH在只需要进行替换相关参数即可，并且对大于PCMAX时按照优先级选择NTX,PSFCH个发送的PSFCH。
在一些实施例中，带间(inter band)CA SL PSFCH的功率控制机制(此时NMAX,PSFCH是每个频带配置或定义的)。
在一些实施例中，先对每个频带内的PSFCH进行丢弃，使得满足每个频带内的PSFCH发送个数均小于等于NMAX,PSFCH,f，其中f代表对应的频带，该参数代表每个频带内UE能够发送的PSFCH个数的最大值。然后就按照上述过程进行即可，此时待发送的PSFCH个数总和是每个频带进行上述基于每个频带能够发送的PSFCH个数最大值进行丢弃后的总和。
在一些实施例中，终端需要对某些载波上的所有PSFCH发送进行丢弃。
在一些实施例中，将总功率分配到各个频带上，可以通过高层配置对每个频带的PCMAX,f,或者令PCMAX,f为：该频带上待发PSFCH数目的总功率/所有频带上待发PSFCH数目的总功率*PCMAX；然后如果对于一个频带只有一个载波，则该频带可以参考R16机制确定PSFCH功率及发送个数，只是用PCMAX,f取代现有技术中的PCMAX即可；如果有多个载波，则执行上页过程，如下每个频带上的总功率PCMAX,f可以参考公式6。
在一些实施例中，UE在执行上述步骤之前可能需要先对某些载波上的所有PSFCH发送进行丢弃。
在一些实施例中，进行丢弃的原因是由于同时发送多个的限制，对于支持的载波组合(carrier combination)的限制或者射频重调时间的限制。且进行丢弃的载波由载波上对应的所有PSFCH发送中优先级最低(优先级值最大)的载波开始。依次进行，直到满足上述终端的需求。终端可以对剩 余载波上的PSFCH发送执行上述功控分配过程。
在本公开实施例中，各步骤可以作为独立实施例来实施。部分或全部步骤、其可选实现方式可以与其它实施例中的部分或全部步骤任意组合，也可以与其他实施例的可选实现方式任意组合。
本公开实施例还提供用于实现以上任一种方法的装置，例如，提供一种侧链路通信装置，上述装置包括用以实现以上任一种方法中第一终端所执行的各步骤的单元或模块。再如，还提供另一种侧链路通信装置，包括用以实现以上任一种方法中第二终端所执行的各步骤的单元或模块。
应理解以上装置中各单元或模块的划分仅是一种逻辑功能的划分，在实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。此外，装置中的单元或模块可以以处理器调用软件的形式实现：例如装置包括处理器，处理器与存储器连接，存储器中存储有指令，处理器调用存储器中存储的指令，以实现以上任一方法或实现上述装置各单元或模块的功能，其中处理器例如为通用处理器，例如中央处理单元(Central Processing Unit，CPU)或微处理器，存储器为装置内的存储器或装置外的存储器。或者，装置中的单元或模块可以以硬件电路的形式实现，可以通过对硬件电路的设计实现部分或全部单元或模块的功能，上述硬件电路可以理解为一个或多个处理器；例如，在一种实现中，上述硬件电路为专用集成电路(application-specific integrated circuit，ASIC)，通过对电路内元件逻辑关系的设计，实现以上部分或全部单元或模块的功能；再如，在另一种实现中，上述硬件电路为可以通过可编程逻辑器件(programmable logic device，PLD)实现，以现场可编程门阵列(Field Programmable Gate Array，FPGA)为例，其可以包括大量逻辑门电路，通过配置文件来配置逻辑门电路之间的连接关系，从而实现以上部分或全部单元或模块的功能。以上装置的所有单元或模块可以全部通过处理器调用软件的形式实现，或全部通过硬件电路的形式实现，或部分通过处理器调用软件的形式实现，剩余部分通过硬件电路的形式实现。
在本公开实施例中，处理器是具有信号处理能力的电路，在一种实现中，处理器可以是具有指令读取与运行能力的电路，例如中央处理单元(Central Processing Unit，CPU)、微处理器、图形处理器(graphics processing unit，GPU)(可以理解为微处理器)、或数字信号处理器(digital signal processor，DSP)等；在另一种实现中，处理器可以通过硬件电路的逻辑关系实现一定功能，上述硬件电路的逻辑关系是固定的或可以重构的，例如处理器为专用集成电路(application-specific integrated circuit，ASIC)或可编程逻辑器件(programmable logic device，PLD)实现的硬件电路,例如FPGA。在可重构的硬件电路中，处理器加载配置文档，实现硬件电路配置的过程，可以理解为处理器加载指令，以实现以上部分或全部单元或模块的功能的过程。此外，还可以是针对人工智能设计的硬件电路，其可以理解为ASIC，例如神经网络处理单元(Neural Network Processing Unit，NPU)、张量处理单元(Tensor Processing Unit，TPU)、深度学习处理单元(Deep learning Processing Unit，DPU)等。
图6a是根据一示例性实施例示出的一种侧链路通信装置示意图。如图6a所示，侧链路通信装置6100例如可以是上述提到的第一终端，装置6100包括：收发模块6101。当然装置6100还可以包括处理模块6102等任意可能的模块，本公开不作限定。在一些实施例中，上述收发模块6101用于采用第一功率发送多个载波对应的PSFCH。可选地，上述收发模块6101用于执行以上任一方法中第一终端执行的发送和/或接收等通信步骤S2102，但不限于此，此处不再赘述。可选地，上述处理模块6102用于执行以上任一方法中第一终端执行的其它步骤S2101，但不限于此，此处不再赘述。
图6b是根据一示例性实施例示出的另一种侧链路通信装置示意图。如图6b所示，侧链路通信装置6200例如可以是上述提到的第二终端，装置6200包括：收发模块6201。当然装置6200还可以包括处理模块等任意可能的模块，本公开不作限定。在一些实施例中，上述收发模块6201用于获取采用第一功率发送的多个载波对应的PSFCH。可选地，上述收发模块6201用于执行以上任一方法中第二终端执行的发送和/或接收等通信步骤S2102，但不限于此，此处不再赘述。
图7a是本公开实施例提出的通信设备7100的结构示意图。通信设备7100可以是网络设备(例如接入网设备、核心网设备等)，也可以是终端(例如用户设备等)，也可以是支持网络设备实现以上任一方法的芯片、芯片系统、或处理器等，还可以是支持终端实现以上任一方法的芯片、芯片系统、或处理器等。通信设备7100可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
如图7a所示，通信设备7100包括一个或多个处理器7101。处理器7101可以是通用处理器或者专用处理器等，例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行程序，处理程序的数据。通信设备7100用于执行以上任一方法。
在一些实施例中，通信设备7100还包括用于存储指令的一个或多个存储器7102。可选地，全部 或部分存储器7102也可以处于通信设备7100之外。
在一些实施例中，通信设备7100还包括一个或多个收发器7103。在通信设备7100包括一个或多个收发器7103时，收发器7103执行上述方法中的发送和/或接收等通信步骤S2102，但不限于此。处理器7101执行其它步骤S2101，但不限于此。
在一些实施例中，收发器可以包括接收器和/或发送器，接收器和发送器可以是分离的，也可以集成在一起。可选地，收发器、收发单元、收发机、收发电路等术语可以相互替换，发送器、发送单元、发送机、发送电路等术语可以相互替换，接收器、接收单元、接收机、接收电路等术语可以相互替换。
在一些实施例中，通信设备7100可以包括一个或多个接口电路7104。可选地，接口电路7104与存储器7102连接，接口电路7104可用于从存储器7102或其他装置接收信号，可用于向存储器7102或其他装置发送信号。例如，接口电路7104可读取存储器7102中存储的指令，并将该指令发送给处理器7101。
以上实施例描述中的通信设备7100可以是网络设备或者终端，但本公开中描述的通信设备7100的范围并不限于此，通信设备7100的结构可以不受图7a的限制。通信设备可以是独立的设备或者可以是较大设备的一部分。例如所述通信设备可以是：1)独立的集成电路IC，或芯片，或，芯片系统或子系统；(2)具有一个或多个IC的集合，可选地，上述IC集合也可以包括用于存储数据，程序的存储部件；(3)ASIC，例如调制解调器(Modem)；(4)可嵌入在其他设备内的模块；(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；(6)其他等等。
图7b是本公开实施例提出的芯片7200的结构示意图。对于通信设备7100可以是芯片或芯片系统的情况，可以参见图7b所示的芯片7200的结构示意图，但不限于此。
芯片7200包括一个或多个处理器7201，芯片7200用于执行以上任一方法。
在一些实施例中，芯片7200还包括一个或多个接口电路7202。可选地，接口电路7202与存储器7203连接，接口电路7202可以用于从存储器7203或其他装置接收信号，接口电路7202可用于向存储器7203或其他装置发送信号。例如，接口电路7202可读取存储器7203中存储的指令，并将该指令发送给处理器7201。
在一些实施例中，接口电路7202执行上述方法中的发送和/或接收等通信步骤S2102，但不限于此。处理器7201执行其他步骤S2101，但不限于此。
在一些实施例中，接口电路、接口、收发管脚、收发器等术语可以相互替换。
在一些实施例中，芯片7200还包括用于存储指令的一个或多个存储器7203。可选地，全部或部分存储器7203可以处于芯片7200之外。
本公开还提出存储介质，上述存储介质上存储有指令，当上述指令在通信设备7100上运行时，使得通信设备7100执行以上任一方法。可选地，上述存储介质是电子存储介质。可选地，上述存储介质是计算机可读存储介质，但不限于此，其也可以是其他装置可读的存储介质。可选地，上述存储介质可以是非暂时性(non-transitory)存储介质，但不限于此，其也可以是暂时性存储介质。
本公开还提出程序产品，上述程序产品被通信设备7100执行时，使得通信设备7100执行以上任一方法。可选地，上述程序产品是计算机程序产品。
本公开还提出计算机程序，当其在计算机上运行时，使得计算机执行以上任一方法。
本公开设计了一种在多载波时的PSFCH功率控制方法，给出了基于LTE SL CA以及NR SL PSFCH功控机制的两种方法。实现了在CA场景下对PSFCH的功率控制，以及每个频带的确定PSFCH的最大发送个数。
本公开使得在NR SL CA场景下，如果不同载波的PSFCH产生了重叠，则也可以对PSFCH进行功率控制，以及对应的确定发送的PSFCH个数。

Claims (27)

  1. 一种侧链路通信方法，其特征在于，所述方法由第一终端执行，所述方法包括：
    采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，所述多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，所述第一功率小于或等于预先设定的第一最大发送功率。
  2. 根据权利要求1所述的方法，其特征在于，所述多个载波对应的PSFCH具有y1个待发送的PSFCH；所述方法还包括：
    若所述y1个待发送的PSFCH的发送总功率大于预先设定的第一最大发送功率，对所述y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH，其中，所述y2个PSFCH的发送总功率为所述第一功率，所述y2小于或等于所述y1。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    确定y3个待发送的PSFCH，其中，所述y3大于第一阈值；
    基于PSFCH对应的优先级高低，从所述y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到所述y1个待发送的PSFCH，所述y1小于或等于所述第一阈值。
  4. 根据权利要求3所述的方法，其特征在于，发送所述PSFCH对应的至少一个带宽分别对应一个第二阈值，各个带宽对应的第二阈值之和等于所述第一阈值，其中，所述带宽包括频带和载波中的至少一者，每个频带包括至少一个载波。
  5. 根据权利要求4所述的方法，其特征在于，所述第二阈值为第R个带宽对应的最大PSFCH数量，所述R为正整数；
    所述基于PSFCH对应的优先级高低，从所述y3个待发送的PSFCH中依次丢弃优先级最低的PSFCH，得到所述y1个待发送的PSFCH，包括：
    按照PSFCH对应的优先级高低，从第R个带宽对应的待发送的PSFCH中依次丢弃优先级最低的PSFCH，直至第R个带宽对应的PSFCH数量小于或等于所述第R个带宽对应的最大PSFCH数量，得到所述第R个带宽对应的y4个待发送的PSFCH；
    其中，发送所述PSFCH所占用的全部带宽中，各个带宽对应的y4之和等于所述y1。
  6. 根据权利要求3-5中任意一项所述的方法，其特征在于，所述第一阈值基于终端自身的终端能力确定。
  7. 根据权利要求2-6中任意一项所述的方法，其特征在于，所述对所述y1个待发送的PSFCH进行功率调整或PSFCH丢弃，包括：
    若第R个带宽对应的待发送的PSFCH的发送总功率大于第R个带宽对应的第二最大发送功率，对所述第R个带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃；
    其中，发送所述PSFCH所占用的全部带宽中，各个带宽对应的第二最大发送功率之和等于所述第一最大发送功率；
    所述第二最大发送功率基于高层信令配置，或所述第二最大发送功率基于全部带宽对应待发送的PSFCH的发送总功率、所述第R个带宽对应待发送的PSFCH的发送总功率和所述第一最大发送功率确定，所述R为正整数。
  8. 根据权利要求7所述的方法，其特征在于，所述带宽包括频带，第W个频带对应的PSFCH的发送总功率基于所述第W个频带内各个载波对应的PSFCH的发送总功率确定，所述W为正整数。
  9. 根据权利要求5-8中任意一项所述的方法，其特征在于，所述方法还包括：
    丢弃特定载波上待发送的所有PSFCH，其中，所述特定载波为第W个频带内满足第一条件的载波，所述W为正整数；
    所述第一条件包括以下至少一项：
    同时发送多个载波限制；
    载波组合要求；
    射频重调时间限制。
  10. 根据权利要求9所述的方法，其特征在于，所述第一条件包括同时发送多个载波限制；所述丢弃特定载波上待发送的所有PSFCH包括：
    按照载波内待发送PSFCH的优先级高低，从所述第W个频带内依次丢弃待发送PSFCH的优先级最低的载波所对应的PSFCH；
    直至所述第W个频带内的载波数量小于或等于所述同时发送多个载波限制的载波数量。
  11. 根据权利要求2-6中任意一项所述的方法，其特征在于，所述y2小于所述y1；所述对所述 y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH包括：
    基于待发送的PSFCH对应的优先级高低，对所述y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低；
    若进行功率降低后的发送总功率大于所述第一最大发送功率，丢弃进行功率降低的PSFCH；
    直至PSFCH的发送总功率小于或等于预先设定的第一最大发送功率，得到所述y2个PSFCH。
  12. 根据权利要求11所述的方法，其特征在于，所述y1个待发送的PSFCH中优先级最低的PSFCH为多个，基于终端自身的终端实现确定进行功率降低和/或丢弃的PSFCH。
  13. 根据权利要求11所述的方法，其特征在于，主载波或默认载波对应的PSFCH不进行功率降低和/或丢弃。
  14. 根据权利要求2-10中任意一项所述的方法，其特征在于，所述y2等于所述y1；第x个载波对应PSFCH的发送总功率由第x个载波对应的PSFCH数量，以及第x个载波对应的PSFCH发送功率确定，其中，所述x为正整数，所述第x个载波对应的PSFCH发送功率表示第x个载波上单个PSFCH的发送功率。
  15. 根据权利要求14所述的方法，其特征在于，所述第x个载波对应的PSFCH发送功率基于第一PSFCH发送功率和第二PSFCH发送功率确定；
    其中，所述第一PSFCH发送功率表示终端确定第x个载波上单个PSFCH的发送功率，所述第二PSFCH发送功率表示第x个载波上单个PSFCH被配置的发送功率，所述第一PSFCH发送功率基于所述第二PSFCH发送功率、所述第x个载波对应的PSFCH的发送总功率和所述第一最大发送功率确定。
  16. 一种侧链路通信方法，其特征在于，所述方法由第二终端执行，所述方法包括：
    接收采用第一功率发送的多个载波对应的侧链路反馈信道PSFCH，其中，所述多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，所述第一功率小于或等于预先设定的第一最大发送功率。
  17. 根据权利要求16所述的方法，其特征在于，所述多个载波对应的PSFCH具有y1个待发送的PSFCH；接收到的所述多个载波对应的PSFCH，通过以下方式确定：
    若所述y1个待发送的PSFCH的发送总功率大于预先设定的第一最大发送功率，对所述y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH，其中，所述y2个PSFCH的发送总功率为所述第一功率，所述y2小于或等于所述y1。
  18. 根据权利要求17所述的方法，其特征在于，所述对所述y1个待发送的PSFCH进行功率调整或PSFCH丢弃，包括：
    若第R个带宽对应的待发送的PSFCH的发送总功率大于第R个带宽对应的第二最大发送功率，对所述第R个带宽对应的待发送的PSFCH进行功率调整或PSFCH丢弃；
    其中，发送所述PSFCH所占用的全部带宽中，各个带宽对应的第二最大发送功率之和等于所述第一最大发送功率；
    所述第二最大发送功率基于高层信令配置，或所述第二最大发送功率基于全部带宽对应待发送的PSFCH的发送总功率、所述第R个带宽对应待发送的PSFCH的发送总功率和所述第一最大发送功率确定，所述R为正整数。
  19. 根据权利要求17所述的方法，其特征在于，所述y2小于所述y1；所述对所述y1个待发送的PSFCH进行功率调整或PSFCH丢弃，得到y2个PSFCH包括：
    基于待发送的PSFCH对应的优先级高低，对所述y1个待发送的PSFCH中优先级最低的PSFCH进行功率降低；
    若进行功率降低后的发送总功率大于所述第一最大发送功率，丢弃进行功率降低的PSFCH；
    直至PSFCH的发送总功率小于或等于预先设定的第一最大发送功率，得到所述y2个PSFCH。
  20. 根据权利要求17或18所述的方法，其特征在于，所述y2等于所述y1；第x个载波对应PSFCH的发送总功率由第x个载波对应的PSFCH数量，以及第x个载波对应的PSFCH发送功率确定，其中，所述x为正整数，所述第x个载波对应的PSFCH发送功率表示第x个载波上单个PSFCH的发送功率。
  21. 一种侧链路通信方法，其特征在于，所述方法包括：
    第一终端采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，所述多个载波对应 的PSFCH中至少部分载波的PSFCH之间存在时域重叠，所述第一功率小于或等于预先设定的第一最大发送功率；
    第二终端接收第一终端采用所述第一功率发送的多个载波对应的PSFCH。
  22. 一种第一终端，其特征在于，包括：收发模块；
    所述收发模块用于，采用第一功率发送多个载波对应的侧链路反馈信道PSFCH，其中，所述多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，所述第一功率小于或等于预先设定的第一最大发送功率。
  23. 一种第二终端，其特征在于，包括：收发模块；
    所述收发模块用于，接收采用第一功率发送的多个载波对应的侧链路反馈信道PSFCH，其中，所述多个载波对应的PSFCH中至少部分载波的PSFCH之间存在时域重叠，所述第一功率小于或等于预先设定的第一最大发送功率。
  24. 一种第一终端，其特征在于，包括：
    一个或多个处理器；
    其中，所述第一终端用于执行权利要求1-15中任一项所述的侧链路通信方法。
  25. 一种第二终端，其特征在于，包括：
    一个或多个处理器；
    其中，所述第二终端用于执行权利要求16-20中任一项所述的侧链路通信方法。
  26. 一种通信系统，其特征在于，包括第一终端、第二终端，其中，所述第一终端被配置为实现权利要求1-15中任一项所述的侧链路通信方法，所述第二终端被配置为实现权利要求16-20中任一项所述的侧链路通信方法。
  27. 一种存储介质，所述存储介质存储有指令，其特征在于，当所述指令在通信设备上运行时，使得所述通信设备执行如权利要求1-15或16-20中任一项所述的侧链路通信方法。
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