CN115088361A - Method and apparatus for multiplexing radio resources - Google Patents
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- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The present disclosure relates to methods and systems for multiplexing radio resources in a shared radio spectrum. In one embodiment, the method may include obtaining a resource scheduling message for uplink transmission, the message including an indication of scheduled transmission resources and transmission parameters. The method may include determining a channel detection mechanism based on a transmission parameter. The method may also include detecting the scheduled transmission resources using the determined channel detection mechanism.
Description
Technical Field
The present disclosure relates generally to wireless communications and more specifically to multiplexing radio resources in a shared spectrum.
Background
In wireless communication networks, such as 5G new air interface (NR) networks, communication technologies are aimed at providing higher transmission rates, massive links, ultra-low latency, higher transmission reliability, and hundreds of times power efficiency to support the ever evolving various communication needs. In the case of simultaneous uplink transmissions with different transmission priorities in a cell, the communication technology employs Uplink (UL) inter-user equipment (inter-UE) multiplexing to ensure the transmission performance of the uplink transmission with higher transmission priority. However, when uplink transmission is performed in a shared spectrum (also referred to as an unlicensed spectrum), multiplexing between UL UEs cannot ensure that uplink transmission with higher transmission priority preempts corresponding transmission resources.
Disclosure of Invention
The present disclosure relates to methods, systems, and devices related to wireless communications, and more particularly, to methods, systems, and devices for multiplexing radio resources in shared radio frequencies to ensure uplink transmissions with higher priority.
In one embodiment, a method for inter-UE multiplexing by a user equipment is disclosed. The method can include obtaining a resource scheduling message for uplink transmission. The resource scheduling message may include an indication of scheduled transmission resources and transmission parameters. The method may also include determining a channel detection mechanism based on the transmission parameters. The method may also include detecting the scheduled transmission resources using the determined channel detection mechanism.
In another embodiment, an apparatus for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to perform the above-described method.
In another embodiment, a computer-readable medium includes instructions that, when executed by a computer, cause the computer to perform the above-described method.
The above and other aspects and embodiments thereof are described in more detail in the following figures, description and claims.
Drawings
Fig. 1 illustrates an example diagram of a wireless communication network in accordance with various embodiments.
Fig. 2 shows an example of multiplexing between uplink UEs.
Fig. 3 shows another example of multiplexing between uplink UEs.
Fig. 4 shows a flow diagram of a method for multiplexing radio resources according to an embodiment.
Fig. 5 shows another example of multiplexing between uplink UEs within a channel occupancy time region.
Detailed Description
The techniques and examples of implementations and/or embodiments in this disclosure may be used to improve performance in a wireless communication system. The term "exemplary" is used to mean an "… … example," and does not imply an ideal or preferred example, implementation, or embodiment unless otherwise stated. It should be noted, however, that the embodiments may be embodied in many different forms and, thus, it is intended that the encompassed or claimed subject matter be construed as not being limited to any embodiment set forth below. It is also noted that embodiments may be embodied as methods, apparatus, components, or systems. Accordingly, embodiments of the present disclosure may take the form of, for example, hardware, software, firmware, or any combination thereof.
A radio access network provides a network connection between user equipment and an information or data network, such as a voice or video communication network, the internet, etc. An example radio access network may be based on cellular technology, which may also be based on, for example, 5G NR technology and/or format. Fig. 1 illustrates an example system diagram of a wireless communication network 100 including UEs 102 and 124 and a Wireless Access Network Node (WANN)104, in accordance with various embodiments. The UEs 102 and 124 may include, but are not limited to, mobile phones, smart phones, tablets, laptops, smart electronic devices or appliances including air conditioners, televisions, refrigerators, ovens, etc., or other devices capable of wireless communication over a network. Taking UE102 as an example, it may include transceiver circuitry 106 coupled to an antenna 108 to enable wireless communications with radio access network node 104. The transceiver circuitry 106 may also be coupled to a processor 110, and the processor 110 may also be coupled to a memory 112 or other storage device. The memory 112 may store therein instructions or code that, when read and executed by the processor 110, cause the processor 110 to implement the various methods described herein.
Similarly, the radio access network node 104 may include a base station or other wireless network access point capable of wirelessly communicating with one or more UEs over a network. For example, the radio access network node 104 may include a 5G NR base station, a 5G central unit base station, or a 5G distributed unit base station. Each type of these radio access network nodes may be configured to perform a respective set of radio network functions. The set of radio network functions may differ between different types of radio access network nodes. However, the set of radio network functions between different types of radio access network nodes may overlap in function. The radio access network node 104 may include transceiver circuitry 114 coupled to an antenna 116, which antenna 116 may variously include an antenna tower 118 to enable wireless communications with the UE 102. The transceiver circuitry 114 may also be coupled to one or more processors 120, and the one or more processors 120 may also be coupled to memory 122 or other storage devices. The memory 122 may have stored therein instructions or code that, when read and executed by the processor 120, cause the processor 120 to implement the various methods described herein.
For simplicity and clarity, only one WANN and two UEs are shown in the wireless communication network 100. It should be understood that one or more WANNs may exist in a wireless communication network, and each WANN may serve one or more UEs simultaneously. In addition to the UE and the WANN, the network 100 may also include any other network nodes having different functions, such as network nodes in the core network of the wireless communication network 100. Additionally, although various embodiments will be discussed in the context of a particular example wireless communication network 100, the underlying principles apply to other suitable wireless communication networks.
Multiplexing between uplink UEs may include two implementation mechanisms: uplink cancellation and uplink power control, which will be described with reference to fig. 2 and 3.
Fig. 2 shows a typical application scenario of the uplink cancellation mechanism. For example, UE102 has an uplink transmission request for ultra-reliable low-latency communication (URLLC), and UE 124 has an uplink transmission request for enhanced mobile broadband (eMBB) communication. URLLC transmissions have higher priority than eMBB transmissions. As shown in fig. 2, the UE102 transmits a scheduling request 2 to the WANN 104 (SR 2). Upon receiving SR2 for URLLC transmissions, the WANN 104 needs to schedule uplink transmission resources for transmissions in time and allocate the scheduled resources to the UE102 via UL grant 2. However, as shown in fig. 2, some of the target transmission resources scheduled for UE102 have been allocated to UE 124 via UL grant 1 for eMBB transmission. To ensure timely transmission of URLLC, the UL cancellation mechanism cancels transmission of the eMBB on the target transmission resource with an uplink cancellation indication (UL CL). The lower priority uplink transmissions that may be cancelled may also include Sounding Reference Signals (SRS).
Fig. 3 shows a typical application scenario of the uplink power control mechanism. Similarly, UE102 has an uplink transmission request for URLLC, and UE 124 has an uplink transmission request for eMBB communication. The target transmission resource scheduled for UE102 partially overlaps the target transmission resource scheduled for UE 124. Thus, the uplink power control mechanism introduces an open-loop power control parameter set indication field in the UL grant corresponding to the URLLC transmission schedule, which instructs the UE102 to increase the transmission power for the URLLC transmission to guarantee the transmission performance.
Wireless communication systems such as 5G may use shared spectrum (also referred to as unlicensed frequency bands) as a potential operating spectrum resource. Network devices (UE, WANN) operating on a shared spectrum require access to the transmission channel in a Listen Before Talk (LBT) manner, also known as channel sensing or channel detection. That is, the network device first needs to detect the channel and only occupies the channel for transmission when the channel access condition is satisfied.
In shared spectrum, multiplexing between UL UEs does not work as well as expected. In particular, under the UL cancellation mechanism, although the lower priority uplink transmission is cancelled according to the UL CL indication, there is still a risk that the higher priority uplink transmission fails to preempt the target transmission resource. This runs counter to the original intention of sacrificing lower priority transmissions to ensure higher priority transmissions. Under the UL power control mechanism, in case of resource collision of two uplink transmissions, the lower priority uplink transmission is not cancelled. Meanwhile, due to LBT requirements, the UE must perform channel detection before uplink transmission. In the event of a lower priority uplink transmission on the target resource channel, the UE may detect that the target resource channel is not idle and does not satisfy the channel access condition. As a result, the UE cannot perform higher priority uplink transmission on the target resource channel.
One of the objectives of the present disclosure is to improve the multiplexing between UL UEs to increase the likelihood that higher priority uplink transmissions preempt the target resources in the shared spectrum.
Fig. 4 shows an exemplary embodiment 400 for multiplexing radio resources. In step 410, the UE102 may obtain a resource scheduling message for uplink transmission from the WANN 104. As an example, the resource scheduling message may be an uplink grant and include an identification of scheduled transmission resources and transmission parameters. The scheduled transmission resources may belong to a shared radio frequency transmission band. The transmission parameters may include, for example, a Downlink Control Information (DCI) type, a priority indicator, a ChannelAccess-CPext-CAP, a cancellation indication field, an uplink transmission channel indicator, and other applicable data and fields indicating a priority of uplink transmission, which will be illustrated later.
In step 420, the UE102 may determine a channel detection mechanism based on the transmission parameters. The channel detection mechanism may include type 1 channel detection or type 2 channel detection.
As an example, type 1 channel detection may be random backoff channel detection, where the backoff number is randomly selected according to a predetermined rule. Whenever channel detection is performed, the backoff value will be decremented by one if the channel is idle. And when the back-off value is equal to zero, the condition of occupying the channel is met. Type 1 channel detection may be predetermined, indicated in Radio Resource Control (RRC) signaling, or indicated in downlink control information (e.g., uplink grant).
In contrast, type 2 channel detection may be used when the UE102 may access the channel in a shared manner. The shared manner may indicate that the UE102 may occupy a target transmission resource within the shared resources acquired by other devices, such as the UE or the WANN, by performing a simplified channel, such as type 2 channel detection. In some embodiments, type 2 channel detection may include performing channel detection once for a specified duration, such as channel detection for 25 μ s duration and channel detection for 16 μ s duration. The length of the duration may be predefined or configured by the WANN 104. Alternatively, the type 2 channel sensing may include not performing channel sensing.
In some embodiments, the transmission parameter may be a DCI type field defined in the uplink grant received from the WANN 104. For example, in the case where the value of the DCI type field is 1, the UE102 may select type 2 channel detection to occupy the scheduled transmission resources. In the case where the value of the DCI type field is 0, the UE102 may select type 1 channel detection to occupy the scheduled transmission resources.
Alternatively or additionally, the transmission parameter may be a cancellation indication field included in the uplink grant indicating whether the scheduled uplink transmission relates to cancellation of another uplink transmission. If the currently scheduled uplink transmission resource is vacated by cancelling other uplink transmission traffic, the UE102 may select type 2 channel detection to occupy the scheduled transmission resource. Otherwise, the UE102 may select type 1 channel detection to occupy the scheduled transmission resources.
Alternatively or additionally, the transmission parameter may be a priority indication field in the uplink grant received from the WANN 104. In the case where this field indicates that the uplink transmission has a higher transmission priority, the UE102 may select type 2 channel detection to occupy the scheduled transmission resource. Otherwise, the UE102 may select type 1 channel detection to occupy the scheduled transmission resources.
Alternatively or additionally, the transmission parameter may be a ChannelAccess-CPext-CAP field in an uplink grant received from the WAN 104. In the case where the type of LBT indicated in this field is of simplified channel detection, the UE102 may select type 2 channel detection to occupy the scheduled transmission resources. Otherwise, the UE102 may select type 1 channel detection to occupy the scheduled transmission resources.
Alternatively or additionally, the transmission parameter may be an uplink transmission resource indication field indicating a time domain resource scheduled for uplink transmission and/or a frequency domain resource scheduled for uplink transmission, the UE determining whether a transmission resource scheduled included in the uplink grant falls within a Channel Occupancy Time (COT) region. The COT region may represent the time-frequency resources occupied by the WANN 104 within a shared radio frequency transmission band as shown in fig. 5.
The UE102 may obtain uplink transmission resources by sharing the downlink transmission resources of the WANN 104. Specifically, the WANN 104 may occupy the transmission channel in the shared radio frequency transmission band after performing the specified channel detection and satisfying the predetermined channel access condition. The resource range of the occupied transmission channel is called COT. As shown in fig. 5, the WANN 104 may simply use a portion of the transmission resources in the COT for its downlink transmissions, so the remaining transmission resources may be shared with the UEs served by the WANN 104, including the UE 102. As an example, the range of the COT may be represented by DCI format 2_0, which includes information of a COT duration and a set of available Resource Blocks (RBs) contained in the COT.
For example, COT is described above in the context of a wireless access network node, such as the WANN 104. It should be understood that the COT region may also represent time-frequency resources occupied by another UE within the shared spectrum band. Thus, the UE102 may obtain uplink transmission resources by sharing the standby transmission resources of another UE.
In the case where the transport channel scheduled for uplink transmission by the UE102 falls within the COT region, the UE102 may choose to occupy the scheduled transport resource in type 2 channel detection. Otherwise, the UE102 may choose to occupy the scheduled transmission resources in the type 1 channel detection.
Various transmission parameters are discussed separately above for determining the type of channel sensing to occupy the scheduled transmission resources. It should be understood that these transmission parameters may also be used in combination to serve this function. For example, the UE102 may select type 2 channel detection to occupy the scheduled transmission resources only when the scheduled transmission resources fall within the COT region and the priority indicator indicates that the uplink transmission has a higher priority.
Alternatively or additionally, in case the multiplexing between UL UEs operates under the UL power control mechanism, the transmission parameter may comprise a power control indicator indicating whether to perform uplink transmission at an improved transmission power due to resource multiplexing with UL transmission.
As an example, the power control indicator may be an open loop power control parameter set indication (OLPI) field in the uplink grant. In particular, when the OLPI field indicates that the open-loop power control parameters are from a list of open-loop power control parameter sets configured in the RRC parameter P0-PUSCH-Set (which indicates that uplink transmissions are to be performed at improved transmission power), the UE102 may select type 2 channel detection to occupy the scheduled transmission resources. Otherwise, the UE102 may select type 1 channel detection to occupy the scheduled transmission resources.
In general, the WANN 104 may configure two open-loop power control parameter Set lists using the RRC parameters P0-PUSCH-Set and P0-PUSCH-AlphaSet. The P0-PUSCH-Set includes one or more P0 values that are suitable for configuring open loop power control parameters for multiplexing among UL UEs, i.e., resource multiplexing with other UL transmissions. The P0-PUSCH-AlphaSet includes one or more sets of { P0, alpha } values that are suitable for configuring open loop power control parameters for multiplexing among non-UL UEs. Both P0 and a may be used to determine an open loop power control parameter for the transmit power. P0 denotes a target received power, and α denotes a compensation coefficient for the transmission path loss. The OLPI field is used to indicate which list of open-loop power control parameter sets is to be selected to determine the transmission power of the uplink transmission traffic.
Returning to fig. 1, at step 430, UE102 may detect the scheduled transmission resources using the detection mechanism determined at step 420. The UE102 may occupy the scheduled transmission resources to perform uplink transmission if it is detected that the scheduled transmission resources satisfy the channel access condition.
In some embodiments, in the case where multiplexing applied between UL UEs sharing a radio frequency transmission band operates under the UL power control mechanism, the WAN 104 may configure the UE102 with two power detection thresholds, power _ threshold _1 and power _ threshold _ 2. Power _ threshold _2 is higher than power _ threshold _ 1. UE102 may determine which power detection threshold to use in channel detection for uplink transmissions based on, for example, the OLPI field in an uplink grant scheduling the uplink transmissions.
In particular, when the OLPI field indicates that the open-loop power control parameters are from the list of open-loop power control parameter sets configured in the RRC parameter P0-PUSCH-Set (which means that uplink transmissions will be performed using improved transmission power due to resource multiplexing with other UL transmissions), the UE102 may utilize a higher power threshold, power _ threshold _2, to detect ongoing transmissions on the scheduled transmission resources. As such, while the scheduled transmission resource is being used for transmission traffic, if the transmission power of the transmission traffic is below power _ threshold _2, the UE102 may determine that the scheduled transmission resource is unoccupied and eligible for uplink transmission on the scheduled transmission resource. Conversely, if the UE102 determines to perform uplink transmission without improving the transmission power, it may utilize power threshold 1 to detect ongoing transmissions on the scheduled transmission resource.
Various methods may be used to configure the two power detection thresholds. For example, the WANN 104 may configure two parameters, Threshold (e.g., maxenterydetectionthreshold-r 14) and Threshold offset (e.g., energydetetectionthresholdoffset-r 14) through RRC signaling. Power _ Threshold _1 equals Threshold, and power _ Threshold _2 equals Threshold plus Threshold offset.
Alternatively, the WANN 104 may configure only the parameter Threshold offset (e.g., energydetectionthreshold offset-r14) through RRC signaling. Power _ threshold _1 can be calculated according to a predetermined equation. Power _ Threshold _2 may be equal to Threshold offset plus power _ Threshold _ 1.
Alternatively, the WANN 104 may configure the parameter Threshold offset (e.g., energydetectionthreshold offset-r14) through RRC signaling. Power _ Threshold _2 may be equal to Threshold offset plus power _ Threshold _ 1. If the WANN 104 further configures a parameter Threshold (e.g., maxEnergyDetectionThreshold-r14), power _ Threshold _1 may be equal to Threshold. Otherwise, power _ threshold _1 may be calculated according to a predetermined equation.
Alternatively, the WANN 104 may configure the parameter energydetectionthresholdffset through DCI. Power _ threshold _2 may be equal to energyDetectionThresholdOffset plus power _ threshold _ 1. If the WANN 104 further configures a parameter Threshold (e.g., maxEnergyDetectionThreshold-r14) through RRC signaling, power _ Threshold _1 may be equal to Threshold. Otherwise, power _ threshold _1 may be calculated according to a predetermined equation.
Alternatively, the WANN 104 may configure the value of power _ threshold _2 through DCI. If the WANN 104 configures a parameter Threshold (e.g., maxEnergyDetectionThreshold-r14) through RRC signaling, power _ Threshold _1 may be equal to Threshold. Otherwise, power _ threshold _1 may be calculated according to a predetermined equation.
Alternatively, the UE102 may determine whether the scheduled transmission resource has a transmission from another wireless communication system or cell before determining that the channel detection mechanism occupies the scheduled transmission resource selected between type 2 channel detection and type 1 channel detection at step 420. If the UE102 determines that the scheduled transmission resource is transmitting traffic for other wireless communication systems or cells, the UE102 may directly select type 1 channel detection to occupy the scheduled transmission resource. Otherwise, the UE102 may determine the channel detection mechanism based on the transmission parameters, as discussed above with reference to step 420 in fig. 4.
Other wireless communication systems or cells may refer to wireless communication networks that utilize different communication technologies or standards than the wireless communication network 100. The UE102 may determine whether traffic of other systems or cells is being transmitted using the target resource, for example, by checking a pattern specified for the transmission resource mapping. The traffic of a system or cell typically uses the same pattern, e.g., avoiding mapping data to specific Resource Elements (REs). Thus, the UE102 may detect the transmission power of a particular RE. In the event that the detected transmission power is above a predefined threshold, the UE102 may determine the presence of heterogeneous system or cell traffic.
Alternatively, the UE102 may communicate channel occupancy information to the WANN 104. The channel occupancy information may indicate whether the UE102 is capable of preempting the target transmission resources. The target transmission resources may be preconfigured by the WANN 104 to the UE102, e.g., through RRC signaling, DCI, or a media access control element (MAC CE).
In some embodiments, the channel occupancy information may be indicated in a Scheduling Request (SR). For example, two SR sequences, SR sequence 1 and SR sequence 2, are defined. SR sequence 1 may indicate that UE102 is able to preempt the target resource. SR sequence 2 may indicate that the UE102 is unable to preempt the target resource or is uncertain whether it is able to preempt the target resource. The UE102 may transmit a corresponding SR sequence as channel occupancy information.
Alternatively, two SR frequency domain locations are defined. For example, SR spectrum position 1 may indicate that UE102 is able to preempt the target resource. SR spectrum position 2 may indicate that the UE102 cannot preempt the target resource or is uncertain whether it can preempt the target resource. The UE102 may transmit the corresponding SR frequency location as channel occupancy information.
Alternatively, two SR time domain locations are defined. For example, SR time domain position 1 may indicate that UE102 is able to preempt the target resource. SR time domain position 2 may indicate that the UE102 cannot preempt the target resource or is uncertain whether it can preempt the target resource. The UE102 may transmit the corresponding SR time domain location as channel occupancy information.
Alternatively, two SR time-frequency domain locations are defined. For example, SR time-frequency domain position 1 may indicate that UE102 is able to preempt the target resource. SR time-frequency domain position 2 may indicate that UE102 cannot preempt the target resource or is uncertain whether it can preempt the target resource. The UE102 may transmit the corresponding SR time-frequency domain location as channel occupancy information.
Alternatively, provision may be made for indicating that the UE102 is able to preempt the target resource whenever the UE102 transmits an SR.
When the channel occupancy information indicates that the UE102 is capable of preempting the target resource, the WANN 104 may transmit an uplink grant 1 to the UE102 to provide transmission parameters for uplink transmissions using the target resource. Alternatively, the uplink grant 1 may not include at least one of a time domain resource allocation indication field and a frequency domain resource allocation indication field.
Alternatively, in the case where the target resource is allocated to transmit a lower priority uplink transmission, the WANN 104 may transmit an UL C1 to cancel the transmission of lower priority traffic on the target resource. Alternatively, the WANN 104 may instruct the UE102 to increase the transmission power of its uplink transmissions in uplink grant 1.
When the channel occupancy information indicates that the UE102 cannot preempt the target resources, the WANN 104 may transmit an uplink grant 2 to allocate new transmission resources for uplink transmission by the UE 102.
Various embodiments are discussed above to implement multiplexing between UL UEs in a shared spectrum. A number of conditions are defined for the UE to determine whether it can share the transmission resources of other network devices, such as the UE and the WANN. In case the defined conditions are met, the UE may occupy the target transport channel in a shared manner for its high priority uplink transmissions, which increases the likelihood that the high priority uplink transmissions may preempt the target transport channel. In this way, although the uplink transmission with a low priority is cancelled, the risk that the uplink transmission with a high priority cannot occupy the target transmission channel due to failure to compete for the transmission resource is reduced. Therefore, the overall resource efficiency of the network system and the transmission reliability for high-priority traffic can be ensured.
Throughout the specification and claims, terms may have a subtle meaning, suggested or implied by context, in addition to the meaning explicitly stated. Likewise, the phrase "in one embodiment" as used herein does not necessarily refer to the same embodiment, and the phrase "in another embodiment" as used herein does not necessarily refer to a different embodiment. For example, it is intended that claimed subject matter include all or a partial combination of the example embodiments.
In general, terms may be understood at least in part from the context of usage. For example, as used herein, terms such as "and," "or," "and/or," may include various meanings that may depend at least in part on the context in which the terms are used. Typically, if "or" is used to associate a list such as A, B or C, it is intended to mean A, B and C, used herein in an inclusive sense, and A, B or C, used herein in an exclusive sense. In addition, the term "one or more," as used herein, may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may be understood to convey a singular use or to convey a plural use, depending, at least in part, on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may allow for the presence of additional factors not necessarily expressly described, again depending at least in part on the context.
Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention. Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussion of the features and advantages, and similar language, throughout this specification may, but do not necessarily, refer to the same embodiment.
Furthermore, the described features, advantages, and characteristics of the solution may be combined in any suitable manner in one or more embodiments. One skilled in the relevant art will recognize, in light of the description herein, that the present solution may be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the solution.
Claims (20)
1. A method performed by a user equipment in a wireless communication network, comprising:
obtaining a resource scheduling message for uplink transmission, the resource scheduling message comprising an indication of scheduled transmission resources and transmission parameters;
determining a channel detection mechanism based on the transmission parameters; and
detecting the scheduled transmission resources using the determined channel detection mechanism.
2. The method of claim 1, further comprising:
and in response to the channel detection result meeting the channel access condition defined in the channel detection mechanism, occupying the scheduled transmission resource for the uplink transmission.
3. The method of claim 1, wherein the channel detection mechanism comprises type 1 channel detection or type 2 channel detection.
4. The method of claim 3, wherein the type 2 channel detection comprises one of:
performing channel detection for 25 μ s;
performing channel detection for a duration of 16 mus;
performing channel detection once for a duration of N μ s, wherein N is predefined or configured by a radio network node; or
No channel detection is performed.
5. The method of claim 3, wherein the type 1 channel detection is predetermined, indicated in radio resource control signaling, or indicated in downlink control information.
6. The method of claim 3, wherein the type 1 channel detection is random backoff channel detection.
7. The method of claim 1, the resource scheduling message is an uplink grant.
8. The method of claim 1, wherein the transmission parameters comprise at least one of:
the type of the downlink control information is,
the priority level indicator is a function of the priority level,
ChannelAccess-CPext-CAP，
a cancellation indication field indicating whether the scheduled uplink transmission involves a cancellation of another uplink transmission, an
An uplink transmission resource indication field indicating at least one of a time domain resource scheduled for the uplink transmission and a frequency domain resource scheduled for the uplink transmission.
9. The method of claim 8, wherein the transmission parameter comprises the cancellation indication field, and determining the channel detection mechanism based on the transmission parameter comprises:
determining type 2 channel detection as the channel detection mechanism in response to a cancellation indication field indicating that the scheduled uplink transmission involves cancellation of another uplink transmission.
10. The method of claim 8, wherein the transmission parameter comprises the uplink transmission resource indication field, and determining the channel detection mechanism based on the transmission parameter comprises:
determining type 2 channel detection as the channel detection mechanism in response to the uplink transmission resource indication field indicating the scheduled transmission resources being within a channel occupancy time region, wherein the channel occupancy time region represents time-frequency resources occupied by a radio network node serving the user equipment within a shared spectrum band or occupied by another user equipment within the shared spectrum band.
11. The method of claim 1, wherein the transmission parameter comprises a power control indication field indicating an open loop power control parameter for the uplink transmission.
12. The method of claim 11, wherein determining the channel detection mechanism based on the transmission parameters comprises:
determining type 2 channel detection as the channel detection mechanism in response to the power control indication field indicating that the open loop power control parameter is determined from a Set of open loop power control parameters configured with radio resource control parameter P0-PUSCH-Set.
13. The method of claim 11, wherein the resource scheduling message is an uplink grant and the power control indication field is an open loop power control parameter set indication field in the uplink grant.
14. The method of claim 11, further comprising:
obtaining a first power detection threshold and a second power detection threshold, wherein the first power detection threshold is lower than the second power detection threshold; and is
Detecting the scheduled transmission resource using the selected detection mechanism comprises:
detecting the scheduled transmission resource with the second power detection threshold in response to the power control indication field indicating that the open loop power control parameter is determined from a Set of open loop power control parameters configured with a radio resource control parameter P0-PUSCH-Set.
15. The method of claim 14, wherein detecting the scheduled transmission resources using the selected detection mechanism comprises:
detecting the scheduled transmission resource with the first power detection threshold in response to the power control indication field indicating that the open loop power control parameter is determined from a set of open loop power control parameters configured with a radio resource control parameter P0-PUSCH-AlphaSet.
16. The method of claim 14, wherein the first or second power detection threshold is configured within radio resource control signaling or downlink control information.
17. The method of claim 1, further comprising:
determining whether the scheduled transmission resource has a transmission from another system; and
wherein determining the channel detection mechanism based on the transmission parameters comprises:
determining the channel detection mechanism based on the transmission parameter in response to the scheduled transmission resource not having a transmission from the other system.
18. The method of claim 17, further comprising:
determining type 1 channel detection as the channel detection mechanism in response to the scheduled transmission resources having transmissions from the other system.
19. An apparatus comprising a processor and a memory, wherein the processor is configured to read computer code from the memory to implement the method of any of claims 1 to 18.
20. A computer-readable medium comprising instructions that, when executed by a computer, cause the computer to perform the method of any of claims 1 to 18.
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