Cyclic prefix extension generation and indication method, device, and readable storage medium

Abstract

A method, device, and readable storage medium for generating and indicating a cyclic prefix extension, the method comprising: receiving configuration information; the configuration information is used to indicate the number N of borrowed target symbols, the target symbol being a symbol used to transmit data information; N≥1; and generating the cyclic prefix extension according to the configuration information. The above scheme can determine the target symbol required to generate a CPE and generate a CPE.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a cyclic prefix extension generation and indication method, device, and readable storage medium. Background Art

[0002] Cyclic Prefix Extension (CPE) is introduced in 5G NR-U (New Radio in Unlicensed Spectrum) to meet the requirements of the two existing CAT LBTs and create a gap of 25μs / 16μs / 25μs+TA (Timing Advance) / 16μs+TA. User equipment can use this gap for Listen Before Talk (LBT) and send data after LBT passes.

[0003] After the introduction of CPE, some symbols in the time slot may not be used for normal data transmission. A part of these symbols that cannot be used for normal data transmission can be combined with the cyclic prefix (CP) of the next symbol to form CPE.

[0004] However, determining which symbols are not used for normal data transmission and then using these symbols to generate CPE is not explicitly mentioned in the prior art. Summary of the invention

[0005] The embodiment of the present invention solves the problem of how to determine the target symbol required for generating CPE and generate CPE.

[0006] To solve the above technical problems, an embodiment of the present invention provides a method for generating a cyclic prefix extension, comprising: receiving configuration information; the configuration information is used to indicate the number N of borrowed target symbols, the target symbol being a symbol used to transmit data information; N≥1; generating the cyclic prefix extension according to the configuration information.

[0007] Optionally, generating the cyclic prefix extension according to the configuration information includes: obtaining the number of gap symbols corresponding to 1 time slot; generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of gap symbols.

[0008] Optionally, the cyclic prefix extension is generated according to the configuration information, the cyclic prefix extension type and the number of gap symbols, including: determining a borrowed target symbol according to the configuration information; the borrowed target symbol is adjacent to the gap symbol; determining a duration for listen-before-speak according to the cyclic prefix extension type; removing the duration for listen-before-speak from the total duration corresponding to the gap symbol and the target symbol, and combining the remaining duration with the cyclic prefix in the next symbol for transmitting data information to generate the cyclic prefix extension.

[0009] Optionally, the number of gap symbols corresponding to the current time slot is 1.

[0010] Optionally, the gap symbol is the last symbol of the current time slot; the generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of gap symbols includes: determining, according to the configuration information, that the target symbol is the N symbols adjacent to the gap symbol in the current time slot; determining, according to the cyclic prefix extension type, the duration for listening before speaking; removing the duration for listening before speaking from the total duration corresponding to the gap symbol and the target symbol, combining the remaining duration with the cyclic prefix of the first symbol in the next time slot to generate the cyclic prefix extension; the next time slot is adjacent to the current time slot.

[0011] Optionally, the gap symbol is the last symbol of the current time slot; generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of gap symbols includes: determining, according to the configuration information, that the target symbol is N symbols adjacent to the gap symbol in the next time slot; the next time slot is adjacent to the current time slot; determining, according to the cyclic prefix extension type, a duration for listening before speaking; and removing the duration for listening before speaking from the total duration corresponding to the gap symbol and the target symbol, combining the remaining duration with the cyclic prefix of the N+1th symbol in the next time slot to generate the cyclic prefix extension.

[0012] Optionally, the slot symbol corresponding to the current time slot includes a first slot symbol and a second slot symbol, and the first slot symbol is located before the second slot symbol in timing.

[0013] Optionally, the cyclic prefix extension is generated according to the configuration information, the cyclic prefix extension type and the number of gap symbols, including: determining, according to the configuration information, that the target symbol is N symbols adjacent to the first gap symbol and before the first gap symbol in the current time slot; determining, according to the cyclic prefix extension type, the duration for listening before speaking; and excluding the duration for listening before speaking from the total duration corresponding to the first gap symbol and the target symbol, and combining the remaining duration with the cyclic prefix of the first symbol after the first gap symbol to generate the cyclic prefix extension.

[0014] Optionally, the cyclic prefix extension is generated according to the configuration information, the cyclic prefix extension type and the number of gap symbols, including: determining, according to the configuration information, that the target symbol is the N symbols adjacent to the first gap symbol and located after the first gap symbol in the current time slot; determining, according to the cyclic prefix extension type, the duration for listening before speaking; and excluding the duration for listening before speaking from the total duration corresponding to the first gap symbol and the target symbol, and combining the remaining duration with the cyclic prefix of the N+1th symbol after the first gap symbol to generate the cyclic prefix extension.

[0015] Optionally, the cyclic prefix extension is generated according to the configuration information, the cyclic prefix extension type and the number of gap symbols, including: determining, according to the configuration information, that the target symbol is N symbols adjacent to the first gap symbol and before the second gap symbol in the current time slot; determining, according to the cyclic prefix extension type, the duration for listening before speaking; and excluding the duration for listening before speaking from the total duration corresponding to the second gap symbol and the target symbol, and combining the remaining duration with the cyclic prefix of the first symbol after the second gap symbol to generate the cyclic prefix extension.

[0016] Optionally, if the second gap symbol is the last symbol in the current time slot, the first symbol after the second gap symbol is the first symbol of the next time slot, and the next time slot is adjacent to the current time slot.

[0017] Optionally, the cyclic prefix extension is generated according to the configuration information, the cyclic prefix extension type and the number of gap symbols, including: determining, according to the configuration information, that the target symbol is the N symbols adjacent to the first gap symbol and after the second gap symbol in the current time slot; determining, according to the cyclic prefix extension type, the duration for listening before speaking; and excluding the duration for listening before speaking from the total duration corresponding to the second gap symbol and the target symbol, and combining the remaining duration with the cyclic prefix of the N+1th symbol after the second gap symbol to generate the cyclic prefix extension.

[0018] Optionally, if the second gap symbol is the last symbol in the current time slot, the N symbols after the second gap symbol are the first N symbols of the next time slot, and the N+1th symbol after the second gap symbol is the N+1th symbol of the next time slot; the next time slot is adjacent to the current time slot.

[0019] Optionally, the receiving configuration information includes any one of the following: receiving downlink control information, and obtaining the configuration information from the downlink control information; receiving high-layer signaling, and obtaining the configuration information from the high-layer signaling.

[0020] An embodiment of the present invention also provides a method for indicating the generation of a cyclic prefix extension, comprising: generating configuration information, the configuration information being used to indicate the number N of target symbols borrowed by a user device, the target symbol being a symbol used to transmit data information; N≥1; and sending the configuration information to the user device.

[0021] An embodiment of the present invention also provides a cyclic prefix extension generation device, comprising: a receiving unit, used to receive configuration information; the configuration information is used to indicate the number N of borrowed target symbols, the target symbols are symbols used to transmit data information; N≥1; a first generating unit, used to generate the cyclic prefix extension according to the configuration information.

[0022] An embodiment of the present invention also provides an indication device for cyclic prefix extension generation, comprising: a second generation unit, used to generate configuration information, wherein the configuration information is used to indicate the number N of target symbols borrowed by a user equipment, wherein the target symbol is a symbol used to transmit data information; N≥1; and a sending unit, used to send the configuration information to the user equipment.

[0023] An embodiment of the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored. When the computer program is executed by a processor, the computer program executes the steps of any of the above-mentioned cyclic prefix extension generation methods, or executes the steps of the above-mentioned cyclic prefix extension generation indication method.

[0024] An embodiment of the present invention also provides another cyclic prefix extension generation device, including a memory and a processor, wherein the memory stores a computer program that can be executed on the processor, and the processor executes the steps of any of the above-mentioned cyclic prefix extension generation methods when running the computer program.

[0025] An embodiment of the present invention also provides an indication device for cyclic prefix extension generation, including a memory and a processor, wherein the memory stores a computer program that can be executed on the processor, and the processor executes the steps of the above-mentioned cyclic prefix extension generation indication method when running the computer program.

[0026] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0027] The number N of target symbols is determined from the received configuration information. According to the configuration information, it is possible to determine which target symbols to use, and then generate a cyclic prefix extension according to the determined target symbols. Thus, the solution in the present application can determine the target symbols to use and generate a cyclic prefix extension. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a flow chart of a cyclic prefix extension generation method in an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of symbol distribution corresponding to a time slot in edge link communication;

[0030] Figure 3 It is another schematic diagram of symbol distribution corresponding to a time slot in edge link communication;

[0031] Figure 4 is a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention;

[0034] Figure 7is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention;

[0035] Figure 8 is a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention;

[0036] Fig. 9 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention;

[0037] Fig.10 is a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention;

[0038] Fig.11 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention;

[0039] Fig.12 is a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention;

[0040] Fig.13 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention;

[0041] Fig.14 is a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention;

[0042] Fig.15 is a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention;

[0043] Fig.16 It is a structural schematic diagram of a cyclic prefix extension generation device in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In the prior art, there is no clear solution to indicate which symbols to use when generating a cyclic prefix extension.

[0045] In an embodiment of the present invention, the number N of target symbols is determined from the received configuration information. According to the configuration information, it is possible to determine which target symbols to use, and then generate a cyclic prefix extension according to the determined target symbols. Thus, the solution in the present application can determine the target symbols to use and generate a cyclic prefix extension.

[0046] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0047] The embodiment of the present invention provides a method for generating a cyclic prefix extension, referring to Figure 1 , the following is a detailed description through specific steps.

[0048] In the embodiment of the present invention, the cyclic prefix extension generation method provided in the following steps S101 to S102 may be executed by the user equipment. Specifically, the following steps S101 to S102 may be executed by the baseband chip in the user equipment, or by a chip module including the baseband chip in the user equipment.

[0049] Step S101, receiving configuration information.

[0050] In a specific implementation, the configuration information may be used to indicate the number N of borrowed symbols. The configuration information may be sent by the base station through high-level signaling, or may be sent as downlink control information (DCI), or may be sent as other types of signaling such as MAC CE. The high-level signaling may be radio resource control (RRC) signaling.

[0051] In an embodiment of the present invention, the borrowed symbol may be a symbol used to transmit data information. In side link communication, a time slot includes 14 symbols, which may include 1 gap symbol or two gap symbols. When a time slot does not include a physical side link feedback channel (PSFCH), a time slot may include 1 gap symbol; when a time slot includes a PSFCH, a time slot may include 2 gap symbols.

[0052] Therefore, not all 14 symbols in one time slot can be used for side link transmission. The specific number of symbols that can be configured for side link communication can be obtained by high-level signaling configuration. For the convenience of discussion, these symbols that can be used for side link communication are referred to as side link symbols in the present invention. Specifically, in addition to the gap symbols, other side link symbols in one time slot can be used for side link information transmission.

[0053] In the following discussion, for the convenience of discussion, it is assumed that all 14 symbols in one time slot are configured as side link symbols. However, the embodiment can also be simply extended to the case of other numbers of side link symbols.

[0054] Specifically, when a time slot does not include PSFCH, except for one slot symbol, the remaining 13 symbols are used to carry the Physical Sidelink Shared Channel (PSSCH). When a time slot includes PSFCH, except for two slot symbols, part of the remaining 12 symbols can be used to transmit PSSCH, and the other part is used to transmit PSFCH.

[0055] Reference Figure 2 , a schematic diagram of symbol distribution corresponding to a time slot in edge link communication is given. Figure 3 , another schematic diagram of symbol distribution corresponding to a time slot in edge link communication is given.

[0056] Figure 2 In the side link communication, one time slot includes 1 gap symbol (Gap), and the remaining 13 symbols are used to carry PSSCH. Figure 3 In the side link communication, a time slot includes two gap symbols (Gap), two symbols are used to carry PSFCH, and the remaining 10 symbols are used to carry PSSCH.

[0057] In a specific implementation, when introducing cyclic prefix extension in edge link communication, gap symbols may be used preferentially. If the duration of the gap symbol is not enough to perform the listen-before-talk operation, a symbol adjacent to the gap symbol for transmitting data information may be borrowed, and the borrowed symbol is referred to as the target symbol.

[0058] Step S102: Generate the cyclic prefix extension according to the configuration information.

[0059] In a specific implementation, a cyclic prefix extension may be generated according to the received configuration information. As can be seen from the above embodiment, the number of gap symbols corresponding to one time slot in the edge link communication may be one or two, so the number of gap symbols corresponding to one time slot may be obtained first. Then, a cyclic prefix extension is generated according to the configuration information, the cyclic prefix extension type, and the number of gap symbols.

[0060] In an embodiment of the present invention, when the number of gap symbols corresponding to one time slot is 1, the number of target symbols and which symbols need to be borrowed are determined according to the value of Ci carried in the configuration information. The target symbols are adjacent to the gap symbols and are both located before the gap symbols or are both located after the gap symbols.

[0061] According to the cyclic prefix extension type, the duration of listen before talk (LBT) can be determined. In practical applications, the cyclic prefix extension types may include the following: C1 type, C2 type, C3 type and C4 type, among which the time domain length (duration) corresponding to the C1 type is symbol_length-16μs, the time domain length corresponding to the C2 type is symbol_length-25μs, the time domain length corresponding to the C3 type is symbol_length-16μs-TA, and the time domain length corresponding to the C4 type is symbol_length-25μs-TA. The above-mentioned CPE types may be fully supported in the sidelink, or only part of them may be supported. Which Ci type of cyclic prefix extension is supported can be indicated by high-level signaling, or DCI, or MAC-CE.

[0062] In the embodiment of the present invention, the corresponding duration of listening before speaking can be determined according to the cyclic prefix extension type. For example, corresponding to the C1 type cyclic prefix extension, the corresponding duration of listening before speaking is 16μs; correspondingly, corresponding to the C2 type cyclic prefix extension, the corresponding duration of listening before speaking is 25μs; corresponding to the C3 type cyclic prefix extension, the corresponding duration of listening before speaking is 16μs; correspondingly, corresponding to the C4 type cyclic prefix extension, the corresponding duration of listening before speaking is 25μs.

[0063] In an embodiment of the present invention, the configuration information sent by the base station may carry numerical values ​​corresponding to different cyclic prefix extension types. When the value corresponding to a certain cyclic prefix extension type is 3, it means that the number of target symbols N=3-1=2. When the value corresponding to a certain cyclic prefix extension type is 2, it means that the number of target symbols N=1. When the value corresponding to a certain cyclic prefix extension type is 1, the number of target symbols is 0, that is, no target symbols are required. It should be noted that the target symbol can no longer be used to transmit PSSCH or PSFCH.

[0064] In a specific implementation, after determining the number N of the target symbols to be borrowed, the total duration T corresponding to the gap symbol and the target symbol can be determined. The duration for listening before speaking is set to T1. In the total duration T, the first T1 duration is used for listening before speaking, and the remaining T-T1 duration is combined with the cyclic prefix in the next symbol used to transmit data information to generate a cyclic prefix extension. In addition, the target symbol cannot be used for the transmission of PSSCH or PSFCH.

[0065] In the embodiment of the present invention, if the gap symbol is located at the last symbol of a time slot, the target symbol may be the N symbols before the last symbol, or the first N symbols of the next adjacent time slot. If the target symbol is the N symbols before the last symbol, then in the total time length of the gap symbol and the adjacent N symbols before it, the time length occupied by listen before talk and / or TA is removed, and the remaining time length is combined with the cyclic prefix of the first symbol of the next time slot to generate a cyclic prefix extension; if the target symbol is the first N symbols of the next adjacent time slot, then in the total time length of the gap symbol and the first N symbols of the next adjacent time slot, the time length occupied by listen before talk and / or TA is removed, and the remaining time length is combined with the cyclic prefix of the N+1th symbol of the next time slot to generate a cyclic prefix extension.

[0066] For example, when the cyclic prefix extension type adopted is C1 type, the gap symbol is set to be the last symbol of time slot 1, and the target symbol is the symbol before the last symbol, that is, the gap symbol is the 14th symbol in time slot 1, and the target symbol is the 13th symbol in time slot 1. In the total duration corresponding to the 13th symbol and the 14th symbol, listen before talk is performed first, and the duration occupied by listen before talk is 16μs. The remaining time is combined with the cyclic prefix of the first symbol of the next adjacent time slot to generate a cyclic prefix extension. At this time, the 13th symbol in the time slot may not be used to carry data information.

[0067] For another example, when the adopted cyclic prefix extension type is C2 type, the gap symbol is set to be the last symbol of time slot 1, and the target symbol is the first symbol of the next adjacent time slot, that is, the gap symbol is the 14th symbol in time slot 1, and the target symbol is the first symbol in time slot 2. In the total time corresponding to the gap symbol and the first symbol of time slot 2, listen before talk is performed, and the time occupied by listen before talk is 25 μs. The remaining time is combined with the cyclic prefix of the second symbol of time slot 2 to generate a cyclic prefix extension.

[0068] In a specific implementation, when the number of gap symbols corresponding to one time slot is 2, the number of target symbols is determined according to the specific value of the Ci type carried in the configuration information, and then which symbols need to be borrowed is determined. The target symbol is adjacent to the gap symbol and is located before the gap symbol or after the gap symbol.

[0069] In the embodiment of the present invention, when the number of slot symbols corresponding to one time slot is 2, the target symbol may be adjacent to the first slot symbol and located before the first slot symbol, and the target symbol may be adjacent to the first slot symbol and located after the first slot symbol. Correspondingly, the target symbol may also be adjacent to the second slot symbol and located before the second slot symbol, and the target symbol may also be adjacent to the second slot symbol and located after the second slot symbol.

[0070] The following is an example of a specific case where the number of gap symbols corresponding to one time slot is 1.

[0071] The subcarrier spacing is set to 60KHz and the cyclic prefix extension type is C2. In practical applications, when the subcarrier spacing is 60KHz, among the 14 symbols corresponding to one time slot, the first symbol has a duration of 18.36μs, and the remaining 13 symbols have a duration of 17.84μs.

[0072] Reference Fig.14 , a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention is given. Fig.15 , a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.

[0073] Fig.14 In the example, the value of the C2 type carried in the configuration information is set to 2, and the number of target symbols is determined to be 1. The gap symbol is located at the 14th symbol of time slot 1, and the target symbol is determined to be the 13th symbol of time slot 1. In the total duration corresponding to the 13th symbol and the 14th symbol in time slot 1, the first 25 μs is used for LBT operation, and the remaining time is used with the cyclic prefix in the 1st symbol of time slot 2 to generate a cyclic prefix extension.

[0074] Fig.15 In the example, the value of the C2 type carried in the configuration information is set to 2, and the number of target symbols is determined to be 1. The gap symbol is located at the 14th symbol of time slot 1, and the target symbol is determined to be the 1st symbol of time slot 2. Of the total duration corresponding to the 14th symbol in time slot 1 and the 1st symbol in time slot 2, the first 25 μs is used for LBT operation, and the remaining time is used to generate a cyclic prefix extension with the cyclic prefix in the second symbol of time slot 2.

[0075] It is understandable that for different subcarrier spacings and different cyclic prefix extension types, the generation of the corresponding cyclic prefix extension can refer to the above Fig.14 With the above Fig.15 , the embodiments of the present invention are not described in detail.

[0076] The specific situations when the number of gap symbols corresponding to one time slot is 2 are described below.

[0077] The subcarrier spacing is set to 60KHz and the cyclic prefix extension type is C3. In practical applications, it can be seen that when the subcarrier spacing is 60KHz, among the 14 symbols corresponding to one time slot, the first symbol has a duration of 18.36μs, and the remaining 13 symbols have a duration of 17.84μs.

[0078] Reference Figure 4 , a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention is given. Figure 5 , a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.

[0079] Figure 4 In the configuration information, the cyclic prefix extension type is C3 type, and the value of C3 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and before the first slot symbol, the first slot symbol is the 11th symbol in slot 1, and the target symbol is the 10th symbol in slot 1. In the total duration corresponding to the 10th symbol and the 11th symbol in slot 1, the first 16μs+TA duration is used for LBT and TA operations, and the remaining time and the cyclic prefix in the 12th symbol (that is, the symbol occupied by the first PSFCH in time sequence) generate a cyclic prefix extension.

[0080] Figure 5 In the configuration information, the cyclic prefix extension type is C3 type, and the value of C3 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and after the first gap symbol, the first gap symbol is the 11th symbol in slot 1, and the target symbol is the 12th symbol in slot 1. In the total duration corresponding to the 11th symbol and the 12th symbol in slot 1, the first 16μs+TA duration is used for LBT and TA operations, and the remaining time and the cyclic prefix in the 13th symbol (that is, the symbol occupied by the first PSFCH in time sequence) generate a cyclic prefix extension.

[0081] Reference Figure 6 , a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention is given. Figure 7 , a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.

[0082] Figure 6In the configuration information, the cyclic prefix extension type is C3 type, and the value of C3 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and before the second gap symbol, the second gap symbol is the 14th symbol in time slot 1, and the target symbol is the 13th symbol in time slot 1. In the total duration corresponding to the 13th symbol and the 14th symbol in time slot 1, the first 16μs+TA duration is used for LBT and TA operations, and the remaining time and the cyclic prefix in the first symbol in time slot 2 generate a cyclic prefix extension.

[0083] Figure 7 In the configuration information, the cyclic prefix extension type is C3 type, and the value of C3 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and after the second slot symbol, the second slot symbol is the 14th symbol in slot 1, and the target symbol is the 1st symbol in slot 2. In the total duration corresponding to the 14th symbol in slot 1 and the 1st symbol in slot 2, the first 16μs+TA duration is used for LBT and TA operations, and the remaining time and the cyclic prefix in the second symbol in slot 2 generate a cyclic prefix extension.

[0084] In the embodiment of the present invention, the positions of the target symbols selected by different time slots may be the same or different. Figure 4 The scheme shown in Figure 6 The scheme shown in is combined, that is, in some time slots, Figure 4 In another part of the time slot, the scheme shown in Figure 6 The scheme shown in .

[0085] For example, in time slot 1, the selected target symbol is adjacent to the first slot symbol and is located before the first slot symbol; in time slot 2, the selected target symbol is adjacent to the first slot symbol (the first slot symbol in time slot 2) and is located after the first slot symbol.

[0086] In another embodiment of the present invention, Figure 4 The scheme shown in Figure 7 The scheme shown in is combined, that is, in some time slots, Figure 4 In another part of the time slot, the scheme shown in Figure 7 The scheme shown in .

[0087] It should be noted that if Figure 5 The scheme shown in Figure 6 If the scheme shown in is combined, both PSFCHs may be occupied. Therefore, it is necessary to avoid using them separately in different time slots. Figure 5 and Figure 6The scheme shown in .

[0088] The subcarrier spacing is set to 60KHz and the listen-before-speak time is set to 25μs.

[0089] Reference Figure 8 , a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention is given. Fig. 9 , a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.

[0090] Figure 8 In the configuration information, the cyclic prefix extension type is C2 type, and the value of C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and before the first slot symbol, the first slot symbol is the 11th symbol in slot 1, and the target symbol is the 10th symbol in slot 1. In the total duration corresponding to the 10th symbol and the 11th symbol in slot 1, the first 25μs duration is used for LBT, and the remaining time is used to generate a cyclic prefix extension with the cyclic prefix in the 12th symbol (that is, the symbol occupied by the first PSFCH in time sequence).

[0091] Fig. 9 In the configuration information, the cyclic prefix extension type is C2 type, and the value of C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and after the first slot symbol, the first slot symbol is the 11th symbol in slot 1, and the target symbol is the 12th symbol in slot 1. In the total duration corresponding to the 11th symbol and the 12th symbol in slot 1, the first 25μs duration is used for LBT, and the remaining time is used to generate a cyclic prefix extension with the cyclic prefix in the 13th symbol (that is, the symbol occupied by the first PSFCH in time sequence).

[0092] Reference Fig.10 , a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention is given. Fig.11 , a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.

[0093] Fig.10 In the configuration information, the cyclic prefix extension type is C2 type, and the value of C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and before the second gap symbol, the second gap symbol is the 14th symbol in time slot 1, and the target symbol is the 13th symbol in time slot 1. Of the total duration corresponding to the 13th symbol and the 14th symbol in time slot 1, the first 25 μs duration is used for LBT, and the remaining time and the cyclic prefix in the first symbol in time slot 2 generate a cyclic prefix extension.

[0094] Fig.11 In the configuration information, the cyclic prefix extension type is C2 type, and the value of C2 type carried in the configuration information is set to 2, then the number of target symbols is determined to be 1. The target symbol is determined to be adjacent to and after the second slot symbol, the second slot symbol is the 14th symbol in slot 1, and the target symbol is the 1st symbol in slot 2. Of the total duration corresponding to the 14th symbol in slot 1 and the 1st symbol in slot 2, the first 25 μs duration is used for LBT, and the remaining time and the cyclic prefix in the second symbol in slot 2 generate a cyclic prefix extension.

[0095] In the embodiment of the present invention, the positions of the target symbols selected by different time slots may be the same or different. Figure 8 The scheme shown in Fig.10 The scheme shown in is combined, that is, in some time slots, Figure 8 In another part of the time slot, the scheme shown in Fig.10 The scheme shown in .

[0096] For example, in time slot 1, the selected target symbol is adjacent to the first slot symbol and is located before the first slot symbol; in time slot 2, the selected target symbol is adjacent to the first slot symbol (the first slot symbol in time slot 2) and is located after the first slot symbol.

[0097] In another embodiment of the present invention, Figure 8 The scheme shown in Fig.11 The scheme shown in is combined, that is, in some time slots, Figure 8 In another part of the time slot, the scheme shown in Fig.11 The scheme shown in .

[0098] It should be noted that if Fig. 9 The scheme shown in Fig.10 If the scheme shown in is combined, both PSFCHs may be occupied. Therefore, it is necessary to avoid using them separately in different time slots. Fig. 9 and Fig.10 The scheme shown in .

[0099] In a specific implementation, when the value of the Ci type indicated in the configuration information is 1, it means that no symbol for transmitting data information is occupied. Fig.12 , a schematic diagram of cyclic prefix extension generation in an embodiment of the present invention is given.

[0100] Determine that the target number of symbols is 1, the cyclic prefix extension type is C1 type, time slot 1 includes symbols carrying PSFCH, and the subcarrier spacing is 60KHz, then the duration corresponding to a slot symbol is 17.84μs. Select the first slot symbol (that is, the 11th symbol of time slot 1) for listen-before-speak, the duration required for listen-before-speak is 16μs, then the remaining 1.84μs and the cyclic prefix of the 12th symbol form a cyclic prefix extension.

[0101] Reference Fig.13 , a schematic diagram of another cyclic prefix extension generation in an embodiment of the present invention is given.

[0102] Determine that the target number of symbols is 1, the cyclic prefix extension type is C1 type, time slot 1 includes symbols carrying PSFCH, and the subcarrier spacing is 60KHz, then the duration corresponding to one slot symbol is 17.84μs. Select the second slot symbol (that is, the 14th symbol of time slot 1) for listen-before-speak, the duration required for listen-before-speak is 16μs, then the remaining 1.84μs and the cyclic prefix of the first symbol of the second time slot form a cyclic prefix extension.

[0103] The above embodiment provides a schematic diagram of generating a cyclic prefix extension when the cyclic prefix extension type is C2 type and C3 type. It can be understood that for the cyclic prefix extension type of C1 type and C4 type, the schematic diagram of generating a cyclic prefix extension can refer to the above C2 type and C3 type, and the embodiment of the present invention will not be repeated.

[0104] Specifically, for the C1 type, you can refer to the C2 type; for the C4 type, you can refer to the C3 type.

[0105] The embodiment of the present invention also provides a method for indicating generation of cyclic prefix extension, comprising: generating configuration information; and sending the configuration information to user equipment.

[0106] In a specific implementation, the configuration information is used to indicate the number N of target symbols borrowed by the user equipment, where the target symbol is a symbol used to transmit data information; N≥1.

[0107] In a specific implementation, the above-mentioned indication method for generating a cyclic prefix extension can be executed by a transmitting end device, or by a chip with data processing capability (such as a data signal processing chip) in the transmitting end device, or by a chip module including a chip with data processing capability in the transmitting end device. The transmitting end device can be a user device or a base station device.

[0108] In a specific implementation, the configuration information may be used to indicate the number N of borrowed symbols. The configuration information may be sent by the base station through high-level signaling, or may be sent as downlink control information (DCI), or may be sent as other types of signaling such as MAC CE. The high-level signaling may be radio resource control (RRC) signaling.

[0109] In a specific implementation, the specific content and function of the configuration information can refer to the corresponding description in the above step S101, and will not be elaborated in this embodiment of the present invention.

[0110] Reference Fig.16 , a cyclic prefix extension generating device 160 in an embodiment of the present invention is provided, comprising: a receiving unit 161 and a first generating unit 162, wherein:

[0111] The receiving unit 161 is used to receive configuration information; the configuration information is used to indicate the number N of borrowed target symbols, and the target symbol is a symbol used to transmit data information; N≥1;

[0112] The first generating unit 162 is configured to generate the cyclic prefix extension according to the configuration information.

[0113] In a specific implementation, the specific execution process of the above-mentioned receiving unit 161 and the first generating unit 162 can correspond to the above-mentioned steps S101 to S102, and will not be described in detail in this embodiment of the present invention.

[0114] In a specific implementation, the above-mentioned cyclic prefix extension generating device 160 may correspond to a chip with data processing function in the user equipment, such as a baseband chip; or correspond to a chip module including a chip with data processing function in the user equipment, or correspond to the user equipment.

[0115] An embodiment of the present invention also provides an indication device for cyclic prefix extension generation, comprising: a second generating unit and a sending unit, wherein: the second generating unit is used to generate configuration information, the configuration information is used to indicate the number N of target symbols borrowed by a user equipment, the target symbol is a symbol used to transmit data information; N≥1; the sending unit is used to send the configuration information to the user equipment.

[0116] In a specific implementation, the above-mentioned cyclic prefix extension generation indication device can correspond to a chip with data processing function in the sending end device, such as a digital signal processing chip, or corresponds to a chip module including a data processing function chip in the sending end device, or corresponds to the sending end device.

[0117] An embodiment of the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored. When the computer program is executed by a processor, the computer program executes the steps of any of the above-mentioned cyclic prefix extension generation methods, or executes the steps of the above-mentioned cyclic prefix extension generation indication method.

[0118] An embodiment of the present invention also provides another cyclic prefix extension generation device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor runs the computer program, the steps of the cyclic prefix extension generation method described in the above embodiment are executed.

[0119] An embodiment of the present invention also provides an indication device for cyclic prefix extension generation, including a memory and a processor, wherein the memory stores a computer program that can be executed on the processor, and when the processor runs the computer program, the steps of the indication method for cyclic prefix extension generation described in the above embodiment are executed.

[0120] In a specific implementation, each module / unit included in each device or product described in the above embodiments may be a software module / unit or a hardware module / unit, or may be partly a software module / unit and partly a hardware module / unit.

[0121] For example, for each device or product applied to or integrated in a chip, each module / unit contained therein may be implemented in the form of hardware such as circuits, or at least some of the modules / units may be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits; for each device or product applied to or integrated in a chip module, each module / unit contained therein may be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (such as a chip, circuit module, etc.) or different components of the chip module, or at least some of the modules / units may be implemented in the form of software programs. The element can be implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal, the various modules / units contained therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0122] A person skilled in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing the relevant hardware through a program, and the program may be stored in a computer-readable storage medium, which may include: ROM, RAM, disk or CD, etc.

[0123] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A method for generating a cyclic prefix extension, characterized in that: include: Receive configuration information; The configuration information is used to indicate the number N of borrowed target symbols, where the target symbols are symbols used to transmit data information; N≥1； The cyclic prefix extension is generated according to the configuration information, including: obtaining the number of gap symbols corresponding to one time slot; generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of gap symbols, including: determining a borrowed target symbol according to the configuration information; the borrowed target symbol is adjacent to the gap symbol; determining a duration for listening before speaking according to the cyclic prefix extension type; removing the duration for listening before speaking from the total duration corresponding to the gap symbol and the target symbol, combining the remaining duration with the cyclic prefix in the next symbol for transmitting data information, and generating the cyclic prefix extension.

2. The cyclic prefix extension generation method according to claim 1, characterized in that: The number of gap symbols corresponding to the current time slot is 1.

3. The method for generating a cyclic prefix extension according to claim 2, wherein: The gap symbol is located at the last symbol of the current time slot; and generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of the gap symbols includes: Determine, according to the configuration information, that the target symbol is N symbols adjacent to the gap symbol in the current time slot; Determining a duration of listening before speaking according to the cyclic prefix extension type; In the total duration corresponding to the gap symbol and the target symbol, the duration for listening before speaking is removed, and the remaining duration is combined with the cyclic prefix of the first symbol in the next time slot to generate the cyclic prefix extension; the next time slot is adjacent to the current time slot.

4. The method for generating a cyclic prefix extension according to claim 2, wherein: The gap symbol is located at the last symbol of the current time slot; and generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of the gap symbols includes: According to the configuration information, determining that the target symbol is N symbols adjacent to the gap symbol in the next time slot; the next time slot is adjacent to the current time slot; Determining a duration of listening before speaking according to the cyclic prefix extension type; In the total duration corresponding to the gap symbol and the target symbol, the duration for listening before speaking is removed, and the remaining duration is combined with the cyclic prefix of the N+1th symbol in the next time slot to generate the cyclic prefix extension.

5. The cyclic prefix extension generation method according to claim 1, characterized in that: The slot symbols corresponding to the current time slot include a first slot symbol and a second slot symbol, and the first slot symbol is located before the second slot symbol in terms of timing.

6. The method for generating cyclic prefix extension according to claim 5, characterized in that: The step of generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: Determine, according to the configuration information, that the target symbol is N symbols in the current time slot that are adjacent to the first gap symbol and are located before the first gap symbol; Determining a duration of listening before speaking according to the cyclic prefix extension type; In the total duration corresponding to the first gap symbol and the target symbol, the duration for listening before speaking is removed, and the remaining duration is combined with the cyclic prefix of the first symbol after the first gap symbol to generate the cyclic prefix extension.

7. The method for generating a cyclic prefix extension according to claim 5, wherein: The step of generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: Determine, according to the configuration information, that the target symbol is N symbols in the current time slot that are adjacent to the first gap symbol and are located after the first gap symbol; Determining a duration of listening before speaking according to the cyclic prefix extension type; In the total duration corresponding to the first gap symbol and the target symbol, the duration for listening before speaking is removed, and the remaining duration is combined with the cyclic prefix of the N+1th symbol after the first gap symbol to generate the cyclic prefix extension.

8. The method for generating a cyclic prefix extension according to claim 5, wherein: The step of generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: Determine, according to the configuration information, that the target symbol is N symbols in the current time slot that are adjacent to the first gap symbol and are located before the second gap symbol; Determining a duration of listening before speaking according to the cyclic prefix extension type; In the total duration corresponding to the second gap symbol and the target symbol, the duration for listening before speaking is removed, and the remaining duration is combined with the cyclic prefix of the first symbol after the second gap symbol to generate the cyclic prefix extension.

9. The method for generating a cyclic prefix extension according to claim 8, wherein: If the second slot symbol is the last symbol in the current time slot, the first symbol after the second slot symbol is the first symbol of the next time slot, and the next time slot is adjacent to the current time slot.

10. The method for generating cyclic prefix extension according to claim 5, wherein: The step of generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type, and the number of gap symbols includes: Determine, according to the configuration information, that the target symbol is N symbols in the current time slot that are adjacent to the first gap symbol and are located after the second gap symbol; Determining a duration of listening before speaking according to the cyclic prefix extension type; In the total duration corresponding to the second gap symbol and the target symbol, the duration for listening before speaking is removed, and the remaining duration is combined with the cyclic prefix of the N+1th symbol after the second gap symbol to generate the cyclic prefix extension.

11. The method for generating cyclic prefix extension according to claim 10, wherein: If the second slot symbol is the last symbol in the current time slot, the N symbols after the second slot symbol are the first N symbols of the next time slot, and the N+1th symbol after the second slot symbol is the N+1th symbol of the next time slot; the next time slot is adjacent to the current time slot.

12. The method for generating cyclic prefix extension according to claim 1, wherein: The receiving configuration information includes any of the following: receiving downlink control information, and acquiring the configuration information from the downlink control information; A high-level signaling is received, and the configuration information is acquired from the high-level signaling.

13. A cyclic prefix extension generating device, characterized in that: include: A receiving unit, configured to receive configuration information; The configuration information is used to indicate the number N of borrowed target symbols, where the target symbols are symbols used to transmit data information; N≥1； The first generating unit is used to generate the cyclic prefix extension according to the configuration information, including: obtaining the number of gap symbols corresponding to one time slot; generating the cyclic prefix extension according to the configuration information, the cyclic prefix extension type and the number of gap symbols, including: determining a borrowed target symbol according to the configuration information; the borrowed target symbol is adjacent to the gap symbol; determining a duration for listening before speaking according to the cyclic prefix extension type; removing the duration for listening before speaking from the total duration corresponding to the gap symbol and the target symbol, combining the remaining duration with the cyclic prefix in the next symbol for transmitting data information, and generating the cyclic prefix extension.

14. A computer-readable storage medium, wherein the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored thereon, wherein: When the computer program is executed by a processor, the steps of the cyclic prefix extension generation method according to any one of claims 1 to 12 are executed.

15. A cyclic prefix extension generating device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor performs the steps of the cyclic prefix extension generation method according to any one of claims 1 to 12.

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