Method and apparatus for determining channel access for uplink transmission

Abstract

A method for determining channel access for an uplink transmission is disclosed. An example method (200) may include: determining a duration of a gap between an uplink transmission of a first device and a downlink transmission of a second device, where the uplink transmission of the first device falls within a channel occupancy time of the second device (210), the downlink transmission of the second device preceding the uplink transmission and within the channel occupancy time of the second device; and determining at least one of a channel access type and a cyclic prefix extension for the uplink transmission based on the duration of the gap (220). Related apparatus and computer-readable media are also disclosed.

Description

Technical Field

[0001] Various example embodiments are directed to methods and apparatus for determining channel access for uplink transmissions. Background Art

[0002] In addition to dynamically scheduled and configured granted uplink (UL) transmissions, in communication systems such as new radio (NR or 5G) systems, periodic or semi-persistent (P / SP) UL transmissions for information such as scheduling requests (SR), sounding reference signals (SRS), channel state information (CSI), and hybrid automatic repeat request acknowledgement (HARQ-ACK) may also be supported. Summary of the Invention

[0003] In a first aspect, a method is disclosed, comprising: determining a duration of a gap between an uplink transmission of the first device and a downlink transmission of the second device, the downlink transmission of the second device preceding the uplink transmission and within the channel occupancy time of the second device, when the uplink transmission of the first device falls within the channel occupancy time of the second device; and determining at least one of a channel access type and a cyclic prefix extension to be used for the uplink transmission based on the duration of the gap. For example, the method may be performed in the first device, such as a mobile device or user equipment (UE), and the second device may be a base station (e.g., a gNB in ​​a NR system).

[0004] In some example embodiments, the method may further include receiving information for determining a duration of the gap, where the information may include a structure of a channel occupancy time. For example, the information for determining the duration of the gap may be carried on a group common physical downlink control channel (GC-PDCCH).

[0005] In some example embodiments, the method may further include receiving information for determining a duration of the gap, where the information may include one or more of: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission. For example, the information for determining the duration of the gap may be carried on a GC-PDCCH.

[0006] In some example embodiments, the channel access type may be a first type where the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value. For example, the first type may be type 2C, the first value may be approximately 16 μs, and the second value may be approximately 0.584 ms.

[0007] In some example embodiments, where the duration of the gap is equal to the third value, the channel access type may be the second type. For example, the second type may be type 2B, and the third value may be approximately 16 μs.

[0008] In some example embodiments, the channel access type may be a third type where the duration of the gap is at least a fourth value. For example, the third type may be type 2A, and the fourth value may be approximately 25 μs.

[0009] In some example embodiments, when the uplink transmission falls outside the channel occupancy time, the channel access type is a fourth type. For example, the fourth type may be type 1.

[0010] In some example embodiments, the method may further include extending a cyclic prefix of the uplink transmission to reduce the duration of the gap if the duration of the gap is greater than a fifth value and less than the sum of the fifth value and the duration of an orthogonal frequency division multiplexing (OFDM) symbol. For example, the fifth value may be approximately 16 μs.

[0011] In some example embodiments, the method may further include dropping the uplink transmission if the duration of the gap is less than or equal to a sixth value and the duration of the uplink transmission is greater than a seventh value. For example, the sixth value may be approximately 16 μs and the seventh value may be approximately 0.584 ms.

[0012] In some example embodiments, the method may further comprise receiving information regarding the configuration of time and frequency resources for uplink transmission, eg, via radio resource control signaling.

[0013] In some example embodiments, the uplink transmission may be a periodic or semi-persistent uplink transmission.

[0014] In a second aspect, a method is also disclosed, comprising: transmitting information for determining a duration of a gap between an uplink transmission of the first device and a downlink transmission of the second device, when the uplink transmission of the first device falls within a channel occupancy time of the second device, the downlink transmission of the second device preceding the uplink transmission and within the channel occupancy time of the second device, and determining at least one of a channel access type and a cyclic prefix extension for the uplink transmission based on the duration of the gap. For example, the method may be performed in the second device, such as a base station (e.g., a gNB in ​​an NR system), and the first device may be a UE.

[0015] In some example embodiments, the information may include a structure of the channel occupancy time. For example, the information may be sent via the GC-PDCCH.

[0016] In some example embodiments, the information may include one or more of: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission. For example, the information may be transmitted via the GC-PDCCH.

[0017] In some example embodiments, the method may further comprise sending information regarding the configuration of time and frequency resources for uplink transmission, for example via radio resource control signaling.

[0018] In some example embodiments, the uplink transmission may be a periodic or semi-persistent uplink transmission.

[0019] In a third aspect, a device is also disclosed, comprising: means for determining, when the uplink transmission of the device falls within a channel occupancy time of another device, a duration of a gap between an uplink transmission of the device and a downlink transmission of the other device, the downlink transmission of the other device preceding the uplink transmission and within the channel occupancy time of the other device; and means for determining, based on the duration of the gap, at least one of a channel access type and a cyclic prefix extension to be used for the uplink transmission. For example, the device may be at least a portion of a mobile device or a UE, and the other device may be at least a portion of a base station.

[0020] In some example embodiments, the apparatus may further include: means for receiving information for determining a duration of the gap, the information including a structure of a channel occupancy time. For example, the information for determining the duration of the gap may be carried on a GC-PDCCH.

[0021] In some example embodiments, the apparatus may further include: means for receiving information for determining a duration of the gap, wherein the information may include one or more of: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission. For example, the information for determining the duration of the gap may be carried on a GC-PDCCH.

[0022] In some example embodiments, the channel access type may be a first type where the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value. For example, the first type may be type 2C, the first value may be approximately 16 μs, and the second value may be approximately 0.584 ms.

[0023] In some example embodiments, where the duration of the gap is equal to the third value, the channel access type may be the second type. For example, the second type may be type 2B, and the third value may be approximately 16 μs.

[0024] In some example embodiments, the channel access type may be a third type where the duration of the gap is at least a fourth value. For example, the third type may be type 2A, and the fourth value may be approximately 25 μs.

[0025] In some example embodiments, when the uplink transmission falls outside the channel occupancy time, the channel access type is a fourth type. For example, the fourth type may be type 1.

[0026] In some example embodiments, the apparatus may further include means for extending the cyclic prefix of the uplink transmission to reduce the duration of the gap if the duration of the gap is greater than a fifth value and less than the sum of the fifth value and the duration of the OFDM symbol. For example, the fifth value may be approximately 16 μs.

[0027] In some example embodiments, the apparatus may further include means for dropping the uplink transmission if the duration of the gap is less than or equal to a sixth value and the duration of the uplink transmission is greater than a seventh value. For example, the sixth value may be approximately 16 μs and the seventh value may be approximately 0.584 ms.

[0028] In some example embodiments, the apparatus may further comprise means for receiving information regarding the configuration of time and frequency resources for uplink transmission, eg, via radio resource control signaling.

[0029] In some example embodiments, the uplink transmission may be a periodic or semi-persistent uplink transmission.

[0030] In a fourth aspect, a device is also disclosed, the device comprising: means for transmitting, when an uplink transmission of another device falls within a channel occupancy time of the device, a means for determining a duration of a gap between a downlink transmission of the device during the channel occupancy time of the device and an uplink transmission of the other device following the downlink transmission, and determining at least one of a channel access type and a cyclic prefix extension for the uplink transmission based on the duration of the gap. For example, the device may be at least part of a base station (e.g., a gNB in ​​an NR system), and the other device may be at least part of a UE.

[0031] In some example embodiments, the information may include a structure of the channel occupancy time. For example, the information may be sent via the GC-PDCCH.

[0032] In some example embodiments, the information may include one or more of: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission. For example, the information may be sent via the GC-PDCCH.

[0033] In some example embodiments, the apparatus may further comprise means for sending information regarding the configuration of time and frequency resources for uplink transmission, eg, via radio resource control signaling.

[0034] In some example embodiments, the uplink transmission is a periodic or semi-persistent uplink transmission.

[0035] In a fifth aspect, a device comprising at least one processor and at least one memory is also disclosed. The at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, together with the at least one processor, cause the device to perform any of the methods described in the first aspect above. For example, the device may correspond to the first device in any of the methods described in the first aspect above, and may be at least a portion of a mobile device or a UE.

[0036] In a sixth aspect, a device including at least one processor and at least one memory is also disclosed. The at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, together with the at least one processor, cause the device to perform any of the methods described in the second aspect above. For example, the device may correspond to the second device in any of the methods described in the second aspect above, and may be at least part of a base station (e.g., a gNB in ​​an NR system).

[0037] In a seventh aspect, a computer-readable medium is also disclosed, comprising program instructions for causing an apparatus to perform at least any of the methods of the first aspect. For example, the apparatus may correspond to the first apparatus in any of the methods of the first aspect and may be at least a portion of a UE.

[0038] In an eighth aspect, a computer-readable medium including program instructions for causing an apparatus to perform at least any of the methods of the second aspect is also disclosed. For example, the apparatus may correspond to the second apparatus in any of the methods of the second aspect and may be at least part of a base station (e.g., a gNB in ​​an NR system). BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Some example embodiments will now be described, by way of non-limiting examples, with reference to the accompanying drawings.

[0040] Figure 1 An example of determining a channel access type and a cyclic prefix extension in an embodiment is shown.

[0041] Figure 2 An example method in an embodiment is shown.

[0042] Figure 3 An example of a signal sequence in the embodiment is shown.

[0043] Figure 4 An example of determining a channel access type in an embodiment is shown.

[0044] Figure 5 An example of determining a channel access type and a cyclic prefix extension in an embodiment is shown.

[0045] Figure 6 An example of processing uplink transmission in the embodiment is shown.

[0046] Figure 7 An example of a signal sequence in the embodiment is shown.

[0047] Figure 8 An example method in an embodiment is shown.

[0048] Figure 9 An example arrangement is shown in the embodiments.

[0049] Figure 10 An example device in an embodiment is shown.

[0050] Figure 11 An example arrangement is shown in the embodiments.

[0051] Figure 12 An example device in an embodiment is shown. DETAILED DESCRIPTION

[0052] In different situations, various types of channel access or listen-before-talk (LBT) may be applied to transmissions. For example, the types of channel access or LBT supported in 3GPP standards (e.g., 3GPP TS 37.213) may include Type 2C for immediate transmission without LBT for a specific time period (e.g., 584 μs); Type 2B for single-shot LBT with a measurement duration (e.g., 16 μs); Type 2A for single-shot LBT with another measurement duration (e.g., 25 μs); Type 1 for LBT with exponential backoff, etc.

[0053] For example, for the UL transmission of the UE's P / SP UL transmission, the UE may determine the channel access type based on whether the UL transmission falls within the channel occupation time (COT) of the base station (e.g., gNB in ​​the NR system).

[0054] In an example, the UE may receive information about the structure of the COT of the base station via the GC-PDCCH, which may be, for example, Figure 1 As shown, it includes information such as a time slot for uplink transmission in the COT, a time slot for downlink transmission in the COT, an indication of duration, the duration of each time slot in the COT, etc. In addition, the UE may receive a configuration for its P / SP UL transmission from the base station, which may be part of a radio resource control (RRC) configuration and may include information about the UE's P / SP UL transmission, such as periodicity, time offset or time slot offset, various resources to be used, etc. The UE may then determine whether the expected UL transmission of its P / SP UL transmission falls within the COT based on the COT structure and information in the P / SP UL transmission configuration. For example, as Figure 1 As shown, Type 1 without cyclic prefix (CP) extension may be determined for an intended UL transmission 110 falling outside COT 100 , and Type 2A without CP extension may be determined for an intended UL transmission 120 , 130 , or 140 falling within COT 100 .

[0055] In another example, the UE may apply a channel access type and / or CP extension length within or outside the COT based on an RRC configuration from the base station. For example, based on the RRC configuration, the UE may apply a specified channel access type for an expected UL transmission within the COT and another specified channel access type for an expected UL transmission outside the COT.

[0056] Figure 2 An example method 200 is shown for determining at least one of a channel access type and a CP extension for an intended UL transmission for a P / SP UL transmission of a UE, which may be performed, for example, in a UE, in an embodiment.

[0057] like Figure 2 As shown, example method 200 may include determining 210 a duration of a gap between an UL transmission of a first device (e.g., a UE or a portion of a UE) and a downlink (DL) transmission of a second device (in a base station or a portion of a base station) prior to an UL transmission in the COT of the second device if the UL transmission falls within the COT, and determining 220 at least one of a channel access type and a CP extension for the UL transmission based on the duration of the gap.

[0058] For example, the example method 200 may allow the first device to utilize different types of channel access or LBT (i.e., switch between different types) when the expected UL transmission is within the COT, and may also allow dynamic configuration of CP extension so that the UE's P / SP UL transmission can be dynamically adapted to different use cases. Thus, for example, when sending P / SP UL signals, the UE may be enabled to use an aggressive / efficient channel access scheme.

[0059] Furthermore, for example, through the example method 200, some or all UEs may apply substantially the same channel access mechanism, thereby simplifying frequency division multiplexing of UL transmissions of different UEs. Furthermore, for example, the UE may adaptively select an appropriate channel access type and CP extension, thereby avoiding additional layer 1 control signaling.

[0060] In some embodiments, the information used to determine the duration of the gap in step 210 may include the structure of the COT of the base station. For example, the UE may receive such information via the GC-PDCCH.

[0061] For example, Figure 3 As shown, UE 310 (the first device in example method 200) may receive a configuration 330 for its P / SP UL transmission from base station 320 (the second device in example method 200). For example, configuration 330 may be part of an RRC configuration from base station 320 and may include information such as the periodicity and time offset (e.g., slot offset) of the P / SP UL transmission and the time, and / or frequency, and / or code domain resources to be used for the P / SP UL transmission. UE 310 may also detect a GC-PUCCH 340 (e.g., having downlink control information format 2_0) from base station 320 before, after, or in parallel with receiving or processing configuration 330 to determine the structure of the COT of base station 320.

[0062] Then, for any expected UL transmission of the P / SP UL transmission of UE 310, for example, in step 210 or additional steps of example method 200, or even before execution of example method 200, UE 310 may utilize information derived from configuration 330 and / or the structure of the COT derived from information carried by GC-PDCCH 340 to determine: (1) whether the expected UL transmission falls within the COT of base station 320; and (2) the position of the expected UL transmission relative to the DL transmission (e.g., the closest DL transmission before the expected UL transmission in the COT), i.e., the duration of the interval between the expected UL transmission and the last DL transmission.

[0063] For example, Figure 4As shown, based on the detected GC-PDCCH 340, the UE 310 can determine the structure of the COT 400 of the base station 320. In addition, for example, in combination with the configuration 330 (e.g., the periodicity and time offset included in or derived from the configuration 330), the UE 310 can determine whether the expected UL transmission is within the COT 400. For example, Figure 4 As shown, it may be determined that the expected UL transmission 420 , 430 , or 450 falls within the COT 400 , and the expected UL transmission 460 falls outside the COT 400 .

[0064] Furthermore, UE 310 may determine the position of an expected UL transmission relative to a DL transmission preceding the expected UL transmission, for example, based on the structure and configuration 330 of COT 400. For example, for expected UL transmission 420, a duration 470 of the gap between expected UL transmission 420 and DL transmission 410 (or a gap duration or distance in time) may be determined, e.g., from the end of DL transmission 410 (e.g., the last DL transmission in the DL time slot preceding UL transmission 420) to the start of expected UL transmission 420, where DL transmission 410 in the DL time slot may be adjacent to and preceding the UL time slot including the expected UL transmission 420 and may be the closest DL transmission preceding the expected UL transmission 420. Similarly, for expected UL transmission 430, a duration 480 of the gap between expected UL transmission 430 and DL transmission 410 may be determined, and for expected UL transmission 450, a duration 490 of the gap between expected UL transmission 450 and DL transmission 440 may be determined.

[0065] It should be understood that the manner in which the intended UL transmission is determined to fall within the COT and the manner in which the duration gap between intended UL transmissions is determined are not limited to the above examples. In various embodiments, any suitable manner and suitable information may be used to determine whether the intended UL transmission of a UE's P / SP UL transmission falls within the channel occupancy initiated by the base station, and to determine the duration of the gap between intended UL transmissions of any UE's P / SP UL transmissions. Further examples are described below.

[0066] like Figure 4 As shown, the determined gap durations may be different for different intended UL transmissions of UE 310. Then, in step 220 of example method 200, different types of channel access or LBT and / or different procedures may be determined for the intended UL transmissions based on the different gap durations.

[0067] In some embodiments, for UL transmission of P / SP UL transmission of the UE, when the duration of the gap is less than or equal to a first value (e.g., a value of approximately 16 μs) and the duration of the UL transmission is less than a second value (e.g., a value of approximately 0.584 ms), the channel access type may be determined to be a first type (e.g., Type 2C). Figure 4 For the expected UL transmission 420 in , the determined gap duration 470 is less than or equal to 16 μs, and the duration 425 of the expected UL transmission 420 is less than 0.584 ms. Then, the type of channel access or LBT for the expected UL transmission 420 may be determined to be Type 2C.

[0068] In some embodiments, for the UL transmission of the P / SP UL transmission of the UE, when the duration of the gap is equal to a third value (e.g., a value of approximately 16 μs), the channel access type may be determined to be the second type (e.g., type 2B). For example, if it is determined that Figure 4 The gap duration 490 of the expected UL transmission 450 in is equal to 16 μs, but the UE 310 may use a Type 2B UL channel access procedure (with a measurement value of 16 μs) for the expected UL transmission 450 .

[0069] In some embodiments, for the UL transmission of the P / SP UL transmission of the UE, the channel access type may be determined to be a third type (e.g., type 2A) when the duration of the gap is at least a fourth value (e.g., a value of approximately 25 μs). For example, if it is determined that Figure 4 If the gap duration 480 of the expected UL transmission 430 in is at least 25 μs, the UE 310 may use a Type 2 AUL channel access procedure (measuring a value of 25 μs) for the expected UL transmission 430 .

[0070] In some embodiments, for the UL transmission of the UE's P / SP UL transmission, if the UL transmission falls outside the COT, the channel access type may be determined to be a fourth type (e.g., type 1). Figure 4 For an expected UL transmission 460 outside of the COT 400 in the UE 310, the UE 310 may use a Type 1 UL channel access procedure. In this case, for example, CP extension may not be used before the expected UL transmission 460. In another example, CP extension may be used before the expected UL transmission 460.

[0071] In some embodiments, for UL transmission of a P / SP UL transmission of a UE, when the duration of the gap is greater than a fifth value (e.g., a value of approximately 16 μs) and less than the sum of the fifth value and the duration of an orthogonal frequency division multiplexing (OFDM) symbol, the CP of the UL transmission may be extended to reduce the duration of the gap. Thus, the duration of the gap may be effectively reduced to a desired length, e.g., 16 μs, by CP extension, to allow the UE to switch the channel access type for the UL transmission from the third type to the first type or the second type.

[0072] For example, Figure 5 As shown, UE 310 determines that gap duration 530 between an expected UL transmission 520 in COT 400 and a DL transmission 510 preceding the expected UL transmission 520 in COT 400 is in the range of 16 μs to 25 μs. UE 310 may then utilize portion 540 to extend its CP, thereby reducing a new gap duration 550 between the extended UL transmission (including portions 520 and 540) and the DL transmission 510 to 16 μs or less. Furthermore, for example, if gap duration 550 is less than or equal to 16 μs and the extended UL transmission (including portions 520 and 540) is less than 0.584 ms, UE 310 may utilize the first type (e.g., Type 2C) described above; or, for example, if gap duration 550 is equal to 16 μs, UE 310 may utilize the second type (e.g., Type 2B) described above.

[0073] Similarly, if gap duration 530 is greater than 25 μs, UE 310 may extend its CP using portion 540, thereby reducing the new gap duration 550 between the extended UL transmission (including portions 520 and 540) and the DL transmission 510 to 25 μs, or to 16 μs or less. Depending on the duration of new gap duration 550 and the extended UL transmission (including portions 520 and 540), UE 310 may use one of the first type (e.g., Type 2C), the second type (e.g., Type 2B), and the third type (e.g., Type 2A) described above.

[0074] In some embodiments, for the UL transmission of the UE's P / SP UL transmission, the UL transmission may be dropped when the duration of the gap is less than or equal to a sixth value (e.g., a value of approximately 16 μs) and the duration of the UL transmission is greater than a seventh value (e.g., a value of approximately 0.584 ms).

[0075] For example, Figure 6As shown, UE 310 determines that gap duration 630 between expected UL transmission 620 in COT 400 and DL transmission 610 preceding expected UL transmission 620 in COT 400 is less than or equal to 16 μs, and duration 640 of expected UL transmission 620 is greater than 0.584 ms. UE 310 may then discard UL transmission 620.

[0076] As described above with respect to several illustrative but non-limiting examples, example method 200 allows, for example, a UE to utilize different types of channel access or LBT (i.e., switch between different types) when a desired UL transmission is within the COT. It also allows for dynamic configuration of CP extensions, such that the UE's P / SP UL transmissions can be dynamically adapted to different use cases. Thus, for example, when transmitting P / SP UL signals, the UE can be enabled to utilize an aggressive / efficient channel access scheme. Furthermore, for example, example method 200 allows some or all UEs to utilize substantially the same channel access mechanism, thereby simplifying frequency division multiplexing of UL transmissions for different UEs. Furthermore, example method 200 allows a UE to adaptively select an appropriate channel access type and CP extension, thereby avoiding additional Layer 1 control signaling.

[0077] It should be understood that, taking into account the tolerance, the various values ​​described above (such as the first and second values ​​described above) may be values ​​within a value range based on the reference value (e.g., 16 μs, 25 μs, or 0.584 ms). For example, “less than or equal to 16 μs” may also mean “less than or equal to a value within a value range including 16 μs and taking into account the tolerance or predetermined threshold / parameter,” and “a value of approximately 16 μs” may mean, for example, 16 μs, or a value of approximately 16 μs, such as 15.985 μs and 16.101 μs, or other reasonable values ​​within a value range including 16 μs and taking into account the tolerance or predetermined threshold / parameter.

[0078] It should also be understood that the example method 200 is not limited to any of the above examples or embodiments. For example, the example method may further include receiving information about, for example, Figure 3 Information showing the configuration of time and frequency resources for uplink transmission.

[0079] For example, Figure 7 In addition to or in place of Figure 33. As shown in the configuration 330 and information 340 on the structure COT, UE 310 may receive information 710 for determining the duration of the gap from base station 320. In various embodiments, for any one or more expected UL transmissions in the P / SP UL transmission of UE 310, the information 710 may include, but is not limited to, one or more of the following: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, a cyclic prefix extension length for at least one uplink transmission, etc. In various embodiments, such information 710 may be carried in any suitable format via the GC-PDCCH or one or more other suitable channels or signals.

[0080] For example, for Figure 4 For the expected UL transmissions 420, 430, and 450 shown, the UE 310 may receive information regarding the channel access type for the UL transmission 420, the channel access type for the UL transmission 430, the gap duration 490 for the UL transmission 450, the length of the CP extension to be applied to the UL transmission 430, and the length of the CP extension to be applied to the UL transmission 490. Then, for example, the UE 310 may determine the channel access type for the UL transmissions 420 and 430 directly from the information 710, and may obtain the gap duration 490 for the UL transmission 450 from the information 710, and then determine the channel access type to be used for the UL transmission 490 for communication based on the obtained gap duration 490, etc.

[0081] Thus, for example, the UE can determine the channel access type or LBT type by parsing the received information, or can simplify the determination of the gap duration or CP extension for the expected UL transmission. For example, including the gap duration for one or more expected UL transmissions (e.g., between the last DL transmission of an ongoing DL burst in the COT and the expected UL transmission) may be useful, for example, in the following case: the base station fills the partial gap using a partial OFDM codeword transmission to create a gap of a specific duration.

[0082] It should be understood that any of the above examples or embodiments may be combined. For example, for the first expected UL transmission and the second expected UL transmission, the UE may detect the GC-PDCCH to determine the structure of the COT, then determine the duration gap, and further determine at least one of the channel access type / LBT type and CP extension, which is consistent with the Figure 3The process shown is similar, when receiving information including a channel access type for a third UL transmission and a gap duration for a fourth UL transmission, and then determining the duration gap, and then determining at least one of the channel access type / LBT type and CP extension for the third UL transmission and the fourth UL transmission, etc.

[0083] Corresponding to the example method 200, Figure 8 It is shown that the base station (eg, Figure 3 Example method 800 performed in the base station 320 in or 7.

[0084] like Figure 8 As shown, exemplary method 800 may include step 810 of transmitting, before a UL transmission in the COT of the second device, information for determining a duration of a gap between the UL transmission of the first device (e.g., UE 310 or a portion of UE 310) and the DL transmission of the second device (e.g., base station 320 or a portion of base station 320), i.e., the duration of step 21 of exemplary method 200, if the UL transmission of the first device falls within the COT of the second device. At least one of a channel access type and a cyclic prefix extension for the UL transmission may then be determined based on the duration of the gap.

[0085] In some embodiments, for example, Figure 3 As shown, the information sent in step 810 may include the structure of the COT of the base station. In some embodiments, for example, Figure 7 As shown, the information sent in step 810 may include one or more of the following: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission. In various embodiments, in step 810, the information may be sent via the GC-PDCCH or any other suitable channel or signals. In addition, the information sent in step 810 or further steps of example 800 may include, for example, information regarding the configuration of time and frequency resources for uplink transmission via RRC signaling.

[0086] Figure 9 An example apparatus 900 is shown in one embodiment for determining at least one of a channel access type and a CP extension for an expected UL transmission of a P / SP UL transmission of a UE, which may be at least a portion of a UE. Figure 3 or UE 310 in 7).

[0087] like Figure 9As shown, the example apparatus 900 may include at least one processor 910 and at least one memory 920 that may include computer program code 930. The at least one memory 920 and the computer program code 930 may be configured to be used with the at least one processor so that the apparatus 900 performs at least the example method 200 described above, wherein, for example, the apparatus 900 may be the first apparatus in the example method 200.

[0088] In various example embodiments, the at least one processor 910 in the example device 900 may include, but is not limited to, at least one hardware processor, including at least one microprocessor such as a central processing unit (CPU), a portion of at least one hardware processor, and functionality of any other suitable dedicated processor (such as a processor developed based on a field programmable gate array (FPGA) and an application specific integrated circuit (ASIC)). In addition, the at least one processor 910 may also include Figure 9 At least one other circuit or element not shown.

[0089] In various example embodiments, at least one memory 920 in the example apparatus 900 may include at least one storage medium in various forms, such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, for example, random access memory (RAM), cache, etc. Non-volatile memory may include, but is not limited to, for example, read-only memory (ROM), hard disk, flash memory, etc. Furthermore, at least the memory 920 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or apparatuses, or any combination thereof.

[0090] Furthermore, in various example embodiments, the example apparatus 900 may further include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and the like.

[0091] In various example embodiments, the circuits, components, elements, and interfaces in the example device 900 including at least one processor 910 and at least one memory 920 may be coupled together via any appropriate connection including, but not limited to, buses, crossbars, wiring, and / or wireless lines in any suitable manner (e.g., electrical, magnetic, optical, electromagnetic, etc.).

[0092] The structure of the device on the UE 310 side is not limited to the above example apparatus 900 . Figure 10 Another example apparatus 1000 is shown for determining at least one of a channel access type and a CP extension for an intended UL transmission of a P / SP UL transmission for a UE, which may be at least a portion of a UE, in one embodiment. Figure 3 or UE 310 in 7).

[0093] like Figure 10 As shown, the example device 1000 may include means 1010 for performing step 210 of the example method 200 and means 1020 for performing step 220 of the example method 200. In one or more other example embodiments, the example device 1000 may further include at least one I / O interface, at least one antenna element, etc. For example, the example device 1000 may be the first device in the example method 200.

[0094] In some example embodiments, examples of apparatus 1010 and 1020 may include circuitry. For example, example apparatus 1010 may include circuitry configured to perform step 210 of example method 200, and example apparatus 1020 may include circuitry configured to perform step 220 of example method 200. In some example embodiments, examples of apparatus may also include software modules and any other suitable functional entities.

[0095] In some embodiments, example apparatus 1000 may further include one or more additional means for receiving the above information to determine the duration of the gap, to extend the cyclic prefix of the uplink transmission in certain circumstances, and / or to drop the uplink transmission in certain circumstances.

[0096] Throughout this disclosure, the term "circuitry" may refer to one or more or all of the following: (a) a hardware-only implementation of a circuit (such as an implementation solely in analog and / or digital circuitry); (b) a combination of hardware circuitry and software, for example, as applicable, (i) a combination of analog and / or digital hardware circuitry and software / firmware, and (ii) a hardware processor and any portion of software (including a digital signal processor), software, and memory that work together to enable a device such as a mobile phone or server to perform various functions); or (c) a hardware circuit and / or processor that requires software (e.g., firmware) to operate, such as a microprocessor or portion of a microprocessor, but which may not be present when not required for operation. This definition of circuitry applies to one or all uses of the term in this disclosure, including in any claims. As a further example, as used in this disclosure, the term "circuitry" also covers an implementation of only a hardware circuit or processor (or multiple processors) or a portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and where applicable to a claim element, a baseband integrated circuit or processor integrated circuit for a mobile device, or a similar integrated circuit in a server, cellular network device, or other computing or networking device.

[0097] Figure 11 An exemplary apparatus 1100 is shown, which may be at least a portion of a base station, e.g. Figure 3Or base station 320 in 7.

[0098] like Figure 11 As shown, example apparatus 1100 may include at least one processor 1110 and at least one memory 1120 that may include computer program code 1130. The at least one memory 1120 and the computer program code 1130 may be configured to be used with the at least one processor to cause the apparatus 1100 to perform at least the above-described example method 800. For example, apparatus 1100 may be the second apparatus in example method 800.

[0099] In various example embodiments, the at least one processor 1110 in the example device 1100 may include, but is not limited to, at least one hardware processor, including at least one microprocessor such as a CPU, a portion of at least one hardware processor, and any other suitable dedicated processor, such as those developed based on FPGAs and ASICs. In addition, the at least one processor 1110 may also include Figure 1 At least one other circuit or element not shown.

[0100] In various example embodiments, at least one memory 1120 in the example apparatus 1100 may include at least one storage medium in various forms, such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, RAM, cache, etc. Non-volatile memory may include, but is not limited to, ROM, hard disk, flash memory, etc. Furthermore, at least memory 1120 may include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or apparatuses, or any combination thereof.

[0101] Furthermore, in various example embodiments, the example apparatus 1100 may further include at least one other circuit, element, and interface, such as at least one I / O interface, at least one antenna element, and the like.

[0102] In various example embodiments, the circuits, components, elements, and interfaces in the example device 1100 including at least one processor 1110 and at least one memory 1120 may be coupled together via any appropriate connection, including but not limited to buses, crossbars, wiring, and / or wireless lines in any suitable manner (e.g., electrical, magnetic, optical, electromagnetic, etc.).

[0103] Figure 12 Another exemplary apparatus 1200 is shown, which may be at least a portion of a base station, e.g. Figure 3 Or base station 320 in 7.

[0104] like Figure 12As shown, the example device 1200 may include means 1210 for performing step 810 of the example method 800. In one or more other example embodiments, the example device 1100 may further include at least one I / O interface, at least one antenna element, etc. For example, the example device may be the second device in the example method 800.

[0105] In various example embodiments, an example of apparatus 1210 may include circuitry. For example, an example of apparatus 1210 may include circuitry configured to perform step 810 of example method 800. In some example embodiments, an example of apparatus may also include software modules and any other suitable functional entities.

[0106] Another example embodiment may involve computer program code or instructions that can cause an apparatus to perform at least the above-mentioned methods, such as computer program code or instructions that cause a UE to perform at least the above-mentioned example method 200, and computer program code or instructions that cause a base station to perform at least the above-mentioned example method 800.

[0107] Another example embodiment may involve a computer-readable medium having such computer program code or instructions stored thereon. In various example embodiments, such a computer-readable medium may include at least one storage medium in various forms, such as volatile memory and / or non-volatile memory. Volatile memory may include, but is not limited to, RAM, cache, etc. Non-volatile memory may include, but is not limited to, ROM, hard disk, flash memory, etc.

[0108] Unless the context clearly requires otherwise, throughout the specification and claims, the words "comprise," "comprising," and the like are to be interpreted in an inclusive sense, rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to." As generally used herein, the term "coupled" refers to two or more elements that may be connected directly or through one or more intermediate elements. Likewise, as generally used herein, the term "connected" refers to two or more elements that may be connected directly or through one or more intermediate elements. Additionally, when used in this application, the words "herein," "above," "below," and words of similar import shall refer to this application as a whole and not to any particular portions of this application. Where the context permits, words in the description using the singular or plural number shall also include the plural or singular number, respectively. The word "or" refers to a list of two or more items and encompasses all of the following interpretations of the word: all of the items in the list, any of the items in the list, and any combination of the items in the list.

[0109] Furthermore, conditional language used herein, such as "may," "could," "might," "may," "for example," "for example," "such as," and the like, unless otherwise specifically stated or understood otherwise in the context of use, is generally intended to convey that certain embodiments include and certain embodiments do not include certain features, elements, and / or states. Thus, such conditional language is generally not intended to imply that features, elements, and / or states are in any way required for one or more embodiments, or that one or more embodiments necessarily include logic for determining that such features, elements, and / or states are included or will be performed in any particular embodiment, with or without author input or prompting.

[0110] Although some example embodiments have been described, these embodiments have been given by way of example and are not intended to limit the scope of the present disclosure. In fact, the devices, methods, and systems described herein can be embodied in a variety of other forms; for example, the devices, methods, and systems described herein. In addition, various omissions, substitutions, and changes in the form of the methods and systems described herein may be made without departing from the spirit of the present disclosure. For example, although the blocks are presented in a given arrangement, alternative embodiments may perform similar functions with different components and / or circuit topologies, and some blocks may be deleted, moved, added, subdivided, combined, and / or modified. At least one of these blocks may be implemented in a variety of different ways. The order of these blocks may also be changed. Any appropriate combination of the elements and actions of the various embodiments described above may be combined to provide other embodiments. The accompanying claims and their equivalents are intended to cover these forms or modifications that would fall within the scope and spirit of the present disclosure.

Claims

1. A method (200) for communication, comprising: determining, if an uplink transmission by a first device falls within a channel occupancy time of a second device, a duration of a gap between an uplink transmission by the first device and a downlink transmission by the second device that precedes the uplink transmission and falls within the channel occupancy time of the second device (210); as well as determining at least one of a channel access type and a cyclic prefix extension for the uplink transmission based on the duration of the gap (220), wherein, in the case where the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value, the channel access type is the first type, and The first type is type 2C, which is used for immediate transmission without listen-before-talk (LBT) in a specific time period.

2. The method (200) according to claim 1, further comprising: Information (340) for determining the duration of the gap is received, the information (340) including a structure of the channel occupancy time.

3. The method (200) according to claim 1 or 2, further comprising: Information (710) for determining a duration of the gap is received, the information (710) comprising at least one of: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one of the uplink transmissions.

4. The method (200) according to claim 2 or 3, wherein: The information is carried on the group common physical downlink control channel.

5. A method for communication (800), comprising: transmitting (810) information for determining a duration of a gap between an uplink transmission of the first device and a downlink transmission of the second device, if the uplink transmission of the first device falls within a channel occupancy time of the second device, the downlink transmission of the second device preceding the uplink transmission and within the channel occupancy time of the second device, at least one of a channel access type and a cyclic prefix extension for the uplink transmission being determined based on the duration of the gap, wherein, in the case where the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value, the channel access type is the first type, and The first type is type 2C, which is used for immediate transmission without listen-before-talk (LBT) in a specific time period.

6. The method (800) of claim 5, wherein: The information includes the structure of the channel occupancy time.

7. The method (800) according to claim 5 or 6, wherein: The information includes at least one of: a channel access type for at least one uplink transmission, a gap duration for the at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission.

8. The method (800) according to claim 6 or 7, wherein: The information is sent via the group common physical downlink control channel.

9. A device (1000) for communication, comprising: means (1010) for determining the duration of a gap between an uplink transmission of the device (1000) and a downlink transmission of another device, the downlink transmission of the other device preceding the uplink transmission and within the channel occupancy time of the other device, if the uplink transmission of the device falls within the channel occupancy time of the other device; and means (1020) for determining at least one of a channel access type and a cyclic prefix extension for the uplink transmission based on a duration of the gap, wherein, in the case where the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value, the channel access type is the first type, and The first type is type 2C, which is used for immediate transmission without listen-before-talk (LBT) in a specific time period.

10. The device (1000) according to claim 9, further comprising: Means for receiving information for determining a duration of the gap, the information comprising a structure of the channel occupancy time.

11. The device (1000) according to claim 9 or 10, further comprising: Means for receiving information for determining a duration of the gap, the information comprising at least one of: a channel access type for at least one uplink transmission, a gap duration for at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission.

12. The device (1000) according to claim 10 or 11, wherein The information is carried on the group common physical downlink control channel.

13. The apparatus (1000) according to any one of claims 9 to 12, further comprising: If the duration of the gap is greater than a fifth value and less than the sum of the fifth value and a duration of an orthogonal frequency division multiplexing symbol, means for extending a cyclic prefix of the uplink transmission to reduce the duration of the gap.

14. The apparatus (1000) according to any one of claims 9 to 12, further comprising: means for dropping the uplink transmission if the duration of the gap is less than or equal to a sixth value and the duration of the uplink transmission is greater than a seventh value.

15. The apparatus (1000) according to any one of claims 9 to 14, further comprising: means for receiving information regarding configuration of time and frequency resources for said uplink transmission via radio resource control signaling.

16. The apparatus (1000) according to any one of claims 9 to 15, wherein The uplink transmission is a periodic or semi-persistent uplink transmission.

17. A device (1200) for communication, comprising: means (1210) for transmitting information for determining a duration of a gap between a downlink transmission of the device (1200) in the channel occupancy time of the device and an uplink transmission of the other device following the downlink transmission, in a case where an uplink transmission of another device falls within the channel occupancy time of the device, at least one of a channel access type and a cyclic prefix extension for the uplink transmission being determined based on the duration of the gap, wherein, in the case where the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value, the channel access type is the first type, and The first type is type 2C, which is used for immediate transmission without listen-before-talk (LBT) in a specific time period.

18. The apparatus (1200) of claim 17, wherein The information includes the structure of the channel occupancy time.

19. The apparatus (1200) according to claim 17 or 18, wherein The information includes at least one of: a channel access type for at least one uplink transmission, a gap duration for the at least one uplink transmission, a slot format indicator, a channel occupancy time duration indicator, and a cyclic prefix extension length for at least one uplink transmission.

20. The apparatus (1200) according to claim 18 or 19, wherein The information is sent via the group common physical downlink control channel.

21. A computer-readable medium comprising program instructions for causing an apparatus (900) to: determining, in a case where an uplink transmission of the apparatus falls within a channel occupancy time of another apparatus, a duration of a gap between an uplink transmission of the apparatus (900) and a downlink transmission of another apparatus that precedes the uplink transmission and is within the channel occupancy time of the other apparatus; and determining at least one of a channel access type and a cyclic prefix extension for the uplink transmission based on a duration of the gap, in, In case the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value, the channel access type is a first type, and The first type is type 2C, which is used for immediate transmission without listen-before-talk (LBT) in a specific time period.

22. A computer-readable medium comprising program instructions for causing an apparatus (1100) to: transmit information for determining a duration of a gap between a downlink transmission of the apparatus (1100) in the channel occupancy time of the apparatus (1100) and an uplink transmission of the other apparatus following the downlink transmission, in a case where an uplink transmission of another apparatus falls within a channel occupancy time of the apparatus (1100), at least one of a channel access type and a cyclic prefix extension for the uplink transmission being determined based on the duration of the gap; in, In case the duration of the gap is less than or equal to a first value and the duration of the uplink transmission is less than a second value, the channel access type is a first type, and The first type is type 2C, which is used for immediate transmission without listen-before-talk (LBT) in a specific time period.

Images