Resource indication in communication network

Abstract

Methods, apparatuses, and systems for providing resource indications in communications are disclosed. The method comprises: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and transmitting one or more indications indicating an overlap between the first resource and the second resource.

Description

Cross-references to related patent applications

[0001] This application claims the benefit of U.S. Provisional Application No. 63 / 377,568, filed on September 29, 2022, entitled “RESOURCE INDICATION IN SIDELINK COMMUNICATION,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] Apparatus and methods consistent with the present disclosure relate generally to communications, and more particularly, to methods, systems, and devices for indicating overlap of resources in communications. Background Art

[0003] Sidelink communication technology enables direct communication between two or more devices. When a first user equipment (UE) in a sidelink communication shares wireless resources with a second UE in the same or different sidelink communication, there may be a conflict in resource selection, for example, due to an overlap of resources reserved by the first UE and resources reserved by the second UE. Depending on the level of overlap, the first UE or the second UE may need to make appropriate adjustments, for example, by freeing up some or all of the reserved resources, or changing the transmission power, etc. Currently, there is no flexible and accurate way to indicate the level of overlap, resulting in inefficient resource selection and even unnecessary waste of resources. Improved systems and methods for flexibly and effectively indicating the overlap of resources are desired.

[0004] The resource selection process for 3GPP Release 16 / 175G New Radio (NR) Vehicle-to-Everything (V2X) PC5 Mode 2 is specified in the 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 38.213, TS 38.214 and TS 38.321. For resource selection, the UE performs channel sensing in the sensing window and collects resource reservation information of other UEs based on Sidelink Control Information (SCI) decoding to identify candidate resources in the selection window T (T = [T1, T2]). First, the UE excludes some time slots from the selection window due to unmonitored resources in the sensing window that the UE cannot sense due to its own transmission (i.e., half-duplex constraint). Then, if the corresponding sidelink reference signal received power (Sidelink-Reference Signal Received Power, SL-RSRP) exceeds the (pre) configured SL-RSRP exclusion threshold, the UE also excludes resources reserved by other UEs from the selection window. After resource exclusion, the number of candidate resources should be at least X% of the total number of resources in the selection window. Otherwise, the UE increases the SL-RSRP exclusion threshold by 3dB until at least X% of resource positions are obtained, where X is (pre) configured from {20,35,50}%. Finally, the UE randomly selects a resource among the candidate resources in the selection window. The selected frequency resource can be used multiple times for subsequent transmissions at fixed time intervals (i.e., Semi-Persistent Scheduling (SPS)) or only once (i.e., One-Shot Transmission (OST)). In addition, the UE can retransmit packets multiple times (i.e., Hybrid Automatic Repeat Request (HARQ) retransmissions) with or without feedback from the receiving UE to improve reliability.

[0005] In order for the UE to perform sensing and obtain information to receive packets from other UEs, the UE first decodes the sidelink control information (SCI). In Release 16, there are the first-stage SCI (SCI format 1-A) and the second-stage SCI (SCI format 2-A or 2-B) as defined in 3GPP TS 38.212. The first-stage SCI carries resource reservation information for future transmissions, as well as information related to resource allocation and modulation and coding schemes (MCS) for the Physical Sidelink Shared Channel (PSSCH), Demodulation Reference Signal (DMRS) mode, second-stage SCI format, etc. The second-stage SCI carries control information for HARQ processes, source / destination IDs, information for distance-based groupcast (UE area identification (ID) and communication range requirements), etc. Based on the resource reservation contained in the first stage SCI, each UE avoids using time / frequency resources reserved by other UEs when it performs resource (re)selection.

[0006] In Release 17 5G NR-V2X PC5 Mode 2, Inter-UE Coordination (IUC) is introduced, in which the first UE (UE-A) sends resource-related coordination information to the second UE (UE-B), and UE-B uses this information for its resource (re)selection. The following two inter-UE coordination schemes are supported: IUC Scheme 1: UE-A may provide UE-B with indications of resources that are preferably included in UE-B's (re)selected resources or that are preferably excluded. When resources are given to be included, UE-B may rely on only these resources (at least if it does not support sensing / resource exclusion) or may combine them with resources identified by its own sensing procedures before making a final selection. The indication from UE-A to UE-B is sent in a Medium Access Control (MAC) Control Element (CE) and / or a second stage SCI. IUC Scheme 2: UE-A may provide an indication to UE-B that resources reserved for UE-B's transmissions (which may or may not be transmissions to UE-A) will or may conflict with transmissions from other UEs. UE-B then reselects new resources to replace them. The indication from UE-A to UE-B is sent in the Physical Sidelink Feedback Channel (PSFCH). Summary of the invention

[0007] Some embodiments of the present disclosure relate to a method for providing resource indication in communication. The method includes: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and transmitting one or more indications indicating the overlap between the first resource and the second resource.

[0008] According to some embodiments of the present disclosure, a method for obtaining one or more resource indications in communication is provided. The method includes: reserving a first resource for communication by a first node; receiving one or more indications indicating overlap between the reserved first resource and a second resource reserved by a second node by the first node; and performing an adjustment by the first node based on the one or more indications to mitigate the impact of the overlap.

[0009] According to some embodiments of the present disclosure, an apparatus for providing one or more resource indications is provided. The apparatus includes: a memory storing instructions; and a processor configured to execute the instructions stored in the memory to: determine an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and transmit one or more indications indicating the overlap between the first resource and the second resource.

[0010] According to some embodiments of the present disclosure, a first node for obtaining a resource indication in communication is provided. The first node includes: a memory storing instructions; and a processor configured to execute the instructions stored in the memory to: reserve a first resource for communication; receive one or more indications indicating an overlap between the reserved first resource and a second resource reserved by a second node; and perform adjustments based on the one or more indications to mitigate the impact of the overlap.

[0011] According to some embodiments of the present disclosure, a non-transitory computer-readable medium is provided, the non-transitory computer-readable medium storing instructions, the instructions being executable by one or more processors of an apparatus for communication to perform a method. The method includes: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and transmitting one or more indications indicating the overlap between the first resource and the second resource.

[0012] According to some embodiments of the present disclosure, a non-transitory computer-readable medium is provided, which stores instructions executable by one or more processors of a first node for communication. The method includes: reserving a first resource for communication; receiving one or more indications indicating an overlap between the reserved first resource and a second resource reserved by a second node; and performing an adjustment based on the one or more indications to mitigate the impact of the overlap. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] [ Figure 1 ] Figure 1 is a flow chart illustrating a method for resource selection in communications consistent with some embodiments of the present disclosure. [ Figure 2 ] Figure 2 It is to show that some embodiments consistent with the present disclosure are based on Figure 1 A schematic diagram of a resource candidate determination process of the method. [ Figure 3 ] Figure 3 is a flow chart illustrating a method for resource selection in communications consistent with some embodiments of the present disclosure. [ Figure 4A ] Figure 4A It is to show that some embodiments consistent with the present disclosure are based on Figure 3 A schematic diagram of a resource candidate determination process of the method. [ Figure 4B ] Figure 4B It is to show that some embodiments consistent with the present disclosure are based on Figure 3 A table of the correspondence between the sub-carrier spacing (SCS) and the resource subsets of the method. [ Figure 5 ] Figure 5 is a schematic diagram illustrating dynamic co-channel coexistence of a first sidelink communication and a second sidelink communication consistent with some embodiments of the present disclosure. [ Figure 6 ] Figure 6 is a schematic diagram illustrating device types for dynamic co-channel coexistence of a first sidelink communication and a second sidelink communication consistent with some embodiments of the present disclosure. [ Figure 7 ] Figure 7 is a flow chart illustrating a method for resource indication in communications consistent with some embodiments of the present disclosure. [ Figure 8 ] Figure 8 is a flow chart illustrating a method for obtaining one or more resource indications in a communication consistent with some embodiments of the present disclosure. [ Fig. 9 ] Fig. 9A block diagram of a node for communication consistent with some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0014] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings, in which the same reference numerals in different figures represent the same or similar elements unless otherwise indicated. The implementations set forth in the following description of the exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of systems, devices, and methods consistent with various aspects of the present disclosure as described in the appended claims.

[0015] Figure 1 is a flow chart illustrating a method 100 (referred to as a "first method" in this disclosure) for resource selection in communications; and Figure 2 is a schematic diagram showing a resource candidate determination process according to a first method in accordance with some embodiments of the present disclosure. Method 100 may be performed by a UE in a sidelink communication. For example, method 100 may be performed by a vehicle in a vehicle-to-everything (V2X) communication. Method 100 may be performed in a mode (referred to as a "first mode" in the present disclosure) that employs Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) for a sidelink at a physical (PHY) layer. An example of the first mode is 3GPP Release 14 / 15 Long-Term Evolution (LTE) V2X PC5 Mode 4.

[0016] like Figure 2As shown in , in the first mode, the time-frequency radio resources are divided into subframes in the time domain and subchannels in the frequency domain. In one embodiment, the first mode may only support 15kHz subcarrier spacing. Each subframe may be 1ms in length and may consist of 14 DFT-s-OFDM symbols. Each subchannel may consist of a plurality of consecutive physical resource blocks (PRBs), wherein each PRB occupies 180kHz and consists of 12 subcarriers with 15kHz SCS. The size of the subchannel (i.e., the number of PRBs per subchannel) may be configurable or preconfigurable. In order to cope with the high Doppler caused by high relative speed in vehicle scenarios, the density of DMRS for frequency offset compensation and channel estimation may be set to four per subframe. Each UE may broadcast data (e.g., TB) in PSSCH and SCI in PSCCH. PSCCH may occupy two consecutive PRBs. The number of PRBs of PSSCH may be configurable or preconfigurable. The SCI format may contain information to decode the corresponding TB in the PSSCH and facilitate UE autonomous resource selection. Figure 2 As shown in , the resource reservation interval can be set to one of the allowed values ​​(eg, 20ms, 50ms, 100ms, 200ms, 300ms, ... 1000ms). The PSCCH and the corresponding PSSCH can be transmitted in the same subframe in adjacent or non-adjacent PRBs in the frequency domain.

[0017] See also Figure 1 , the method 100 includes: step 102, performing channel sensing (eg, background sensing or any other type of full sensing or partial sensing). Figure 2 As shown in , for resource selection, the UE may perform channel sensing in a sensing window (eg, 1000 ms) to collect resource reservation information of other UEs. The sensing window may be of any length of time depending on the implementation of the UE.

[0018] Return to reference Figure 1 , method 100 includes: step 104, collecting resource reservation information and corresponding SL-RSRP of other UEs, and measuring the sidelink received signal strength indicator (Sidelink Received Signal Strength Indicator, S-RSSI). For example, the UE can collect resource reservation information and corresponding SL-RSRP of other UEs. The UE can also use the received sidelink signal to measure the S-RSSI. The UE can decode the received SCI included in the received sidelink signal to identify candidate resources in the selection window T (e.g., T = [T1, T2], where T1≦4ms, and 20ms≦T2≦100ms), such as Figure 2 The selection of T1 and T2 values ​​depends on the implementation of the UE.

[0019] Method 100 includes: step 106, determining candidate resources based on the average S-RSSI sorting by excluding occupied, reserved and / or unmonitored resources. Figure 2 As shown in , once resource selection or reselection is triggered, the UE can exclude some subframes from the selection window. The excluded subframes may be unmonitored resources in the sensing window. For example, the UE may not be able to sense these resources due to the UE's own transmission (e.g., half-duplex constraints). If the corresponding SL-RSRP exceeds the configured or preconfigured SL-RSRP exclusion threshold, the UE can also exclude resources occupied or reserved by other UEs from the selection window. After resource exclusion, the number of candidate resources may be at least 20% of the total number of resources in the selection window. Otherwise, the UE may increase the SL-RSRP exclusion threshold, for example, by 3dB, until the candidate resources reach at least 20% of the total resources. The UE can also calculate the corresponding S-RSSI for each subchannel resource as a linear average of the S-RSSI of the monitored resources with a certain interval (e.g., for a resource reservation interval greater than or equal to 100ms, the average interval is 100ms). For example, the UE can determine 20% of the best resources based on the lowest average S-RSSI as candidate resources among the total resources in the selection window. The UE may use 20% of resources with the lowest average S-RSSI as candidate resources based on the S-RSSI ranking.

[0020] Method 100 includes: step 108, selecting a resource from the candidate resources. The selection of the resource from the candidate resources may be a random selection. For example, Figure 2 As shown in , the UE can select a single subframe resource in a uniformly random manner from candidate single subframe resources. The selected frequency resource can be used for subsequent transmission multiple times at fixed time intervals (this solution is referred to as SPS in this disclosure) or only once (this solution is referred to as OST in this disclosure).

[0021] The method 100 includes: step 110, transmitting a packet based on the SPS or the OST. The packet may be an initial packet or a retransmitted packet. For example, the UE may use the selected resources to transmit the initial packet. For another example, the UE may retransmit the packet at most once without feedback from the receiving UE to improve the reliability of the transmission (this is referred to as "blind HARQ retransmission" in the present disclosure). After the transmission, the method may start again from step 102.

[0022] Figure 3is a flow chart illustrating a method 300 (referred to as a "second method" in this disclosure) for resource selection in communication; Figure 4A is a schematic diagram showing a resource candidate determination process according to the second method; and Figure 4B is a table showing the correspondence between SCS and resource subsets according to the second method in accordance with some embodiments of the present disclosure. Method 300 may be performed by a UE in sidelink communication. For example, method 300 may be performed by a vehicle in V2X communication. Method 300 may be performed in a mode (referred to as the "second mode" in the present disclosure) that employs Orthogonal Frequency Division Multiplexing (OFDM) for sidelink communication at the PHY layer. An example of the second mode is 3GPP Release 16 / 17 5G NR-V2X PC5 Mode 2.

[0023] like Figure 4A As shown in , in the second mode, the time-frequency radio resources are divided into time slots in the time domain and subchannels in the frequency domain. In one embodiment, the second mode can support 15·2 μ kHz SCS, where μ is the OFDM value, μ∈{0,1,2,3,4}. For sub-6 GHz frequencies, 15 kHz, 30 kHz, and 60 kHz (i.e., μ∈{0,1,2}) SCSs are supported, while for frequencies above 6 GHz, 60 kHz, 120 kHz, and 240 kHz (i.e., μ∈{2,3,4}) SCSs are supported. Each time slot is 1 / 2 μ ms in length and consists of 14 OFDM symbols. Each subchannel can consist of multiple consecutive PRBs, each of which occupies 180·2 μ kHz, and consists of 12 with 15·2 μ kHz SCS subcarrier composition. The size of the subchannel (i.e., the number of PRBs per subchannel) is configurable or preconfigurable. To support multiple SCSs and different Doppler spreads, multiple DMRS density options are supported (2 to 4 DMRS symbols per time slot). Each UE can transmit the first stage SCI and data (TB) in the PSCCH, and the second stage SCI in the PSSCH. HARQ feedback (e.g., Acknowledgement (ACK) / Negative Acknowledgement (NACK), or only NACK) can be transmitted in the PSFCH.

[0024] Figure 4B The SCS and the sensing window and the selection window (T SL proc,0and T SL proc,1 ) parameters. For example, when SCS is 15kHz, Figure 4B As shown in the second and third columns, T SL proc,0 corresponds to 1ms, while T SL proc,1 Corresponds to 3ms. For another example, when SCS is 30kHz, T SL proc,0 corresponds to 0.5ms, while T SL proc,1 Corresponding to 2.5ms.

[0025] Return to see Figure 3 , the method 300 includes: step 302, performing channel sensing (eg, background sensing or any other type of full sensing or partial sensing). Figure 4A As shown in FIG. , the UE can sensing (For example, T sensing =[T0,T SL proc,0 ], where T0 = 100ms or 1100ms, and T SL proc,0 exist Figure 4B Channel sensing is performed in the UE to collect resource reservation information of other UEs. Channel sensing with a sensing window of 100 ms can be used for non-periodic services, while channel sensing with a sensing window of 1100 ms can be used for periodic services.

[0026] The method 300 includes: step 304, collecting resource reservation information of other UEs and measuring the corresponding SL-RSRP. Figure 4AAs shown in , the UE can perform channel sensing in the sensing window and collect resource reservation information of other UEs based on SCI decoding to identify candidate resources. In one embodiment, in order to perform channel sensing and obtain information to receive packets from other UEs, the UE first decodes the SCI. SCI decoding may include two stages: the first stage SCI (SCI format 1-A) and the second stage SCI (SCI format 2-A or 2-B) as defined in the 3GPP specification. The first stage SCI may carry resource reservation information for future transmissions, information related to resource allocation, MCS for PSSCH, DMRS mode, and second stage SCI format, etc. The second stage SCI may carry control information for HARQ processes, source / destination IDs, information for distance-based groupcast (e.g., UE area ID and communication range requirements), etc. Based on the resource reservation information contained in the first stage SCI, the UE can avoid using time and / or frequency resources reserved by other UEs when the UE performs resource selection or reselection.

[0027] Method 300 may support inter-UE coordination in which a first UE (UE-A) sends coordination information related to resources to a second UE (UE-B), and UE-B uses the information to perform its resource selection or reselection. In some embodiments, the UE may support a first inter-UE coordination scheme. In the first inter-UE coordination scheme, the UE may receive indications from other UEs of resources that are preferably to be included in the selected or reselected resources of the UE or that are preferably to be excluded. In one embodiment, when the indication of the resources indicates that a given resource is included, if the indication does not support sensing and / or resource exclusion, the UE may rely only on these resources. In one embodiment, the UE may also combine the indication of the resources with the resources identified by its own sensing process before making a final selection. The UE may receive the indication via a MAC CE and / or a second stage SCI. In some embodiments, the UE may support a second inter-UE coordination scheme. In the second inter-UE coordination scheme, the UE may receive an indication that the resources reserved for the UE's transmission will or may conflict with the transmission from another UE. In this case, the UE may reselect new resources. The UE may receive the indication via a PSFCH. The UE may use a mapping table that defines the mapping rules between PSSCH allocations (time slots and subchannels) and PSFCH resources. Using the mapping table, the UE (and transmitter UE) may determine the PSSCH allocation ((one or more) time slots and (one or more) subchannels) to which the information in the PSFCH resources refers. When more than one subchannel is reserved in the PSSCH, multiple PSFCH resources may be used. The mapping table may be predefined, preconfigured at the UE, or configured by a network node.

[0028] The method 300 includes: step 306, determining candidate resources by excluding occupied, reserved and / or unmonitored resources. For example, the UE may select candidate resources from a selection window T (e.g., T = [T1, T2], where 0 ms ≤ T1 ≤ T2). SL proc,1 ms,T SL proc,1 exist Figure 4B , and T2 may be set based on the remaining packet delay budget). The UE may not be able to sense the unmonitored time slots in the sensing window due to, for example, its own transmission (e.g., half-duplex constraints). The UE may also exclude resources occupied or reserved by other UEs from the selection window if the corresponding SL-RSRP exceeds a configured or preconfigured SL-RSRP exclusion threshold. After resource exclusion, the number of candidate resources may be at least X% of the total number of resources in the selection window. Otherwise, the UE may increase the SL-RSRP exclusion threshold, for example by 3dB, until at least X% of the resources are obtained, where X may be configured or preconfigured from {20,35,50}%.

[0029] Method 300 includes: step 308, selecting a resource from the candidate resources. The selection may be a random selection. For example, Figure 4A As shown in , the UE can select a resource among the candidate resources in the selection window. The selected frequency resource can be used for SPS or OST multiple times at fixed time intervals.

[0030] The method 300 includes checking resource availability based on re-evaluation and / or preemption of the selected resource, step 310. This step may be performed for late arriving packets (eg, non-periodic packets) after resource selection and before packet transmission.

[0031] The method 300 includes: step 312, determining whether resource reselection is required. If it is determined that resource reselection is required, the method can be repeated from step 304. On the other hand, if it is determined that resource reselection is not required, the method can continue with: step 314, transmitting a packet based on the SPS or the OST. The packet can be an initial packet or a retransmitted packet. The UE can also retransmit the packet multiple times (e.g., HARQ retransmissions) with or without feedback from the receiving UE to improve the reliability of the transmission.

[0032] Some embodiments of the present disclosure relate to two or more sidelink communications (e.g., in conjunction with Figure 1 to Figure 2 Description of the sidelink communication and the combination Figures 3 to 4B Resource selection or reselection for co-channel coexistence of sidelink communications described herein.

[0033] Figure 5 1 is a schematic diagram illustrating dynamic co-channel coexistence of a first sidelink (SL) communication and a second sidelink (SL) communication consistent with some embodiments of the present disclosure. In one embodiment, the first sidelink communication is an NR sidelink communication and the second sidelink communication is an LTE sidelink communication. Figure 5 As shown in , the first sidelink communication shares time and / or frequency resources with the second sidelink communication. However, the method described in the present disclosure is not limited to this. The method described in the present disclosure can be applied to any sidelink communication, for example, future generation (sixth generation (6G), seventh generation (7G) or any future generation) sidelink communication. In addition, the method described in the present disclosure can also be applied to downlink / uplink communication between a base station and a UE.

[0034] Figure 6 is a schematic diagram of device types illustrating dynamic co-channel coexistence of a first sidelink (SL) communication and a second sidelink (SL) communication consistent with some embodiments of the present disclosure. Figure 6 , at least three types of devices (Type A, Type B, and Type C) are considered in the present disclosure. Type A devices include a module for a first sidelink communication and a module for a second sidelink communication. Type B devices include only a module for the first sidelink communication. Type C devices include only a module for the second sidelink communication. For example, in one embodiment, a Type A device includes both an LTE SL module and an NR SL module; a Type B device includes only an NR SL module; and a Type C device includes only an LTE SL module.

[0035] Sometimes, the sidelink resources selected by one UE may partially or completely overlap with the sidelink resources selected by another UE. When the overlap is severe (complete overlap), one of the two UEs may need to vacate the selected resources or exclude resources from the selection. However, when the overlap is small or negligible, these UEs may not need to exclude resources or vacate resources. At least some embodiments of the present disclosure provide a flexible and simple way to indicate the level of overlap, so that the UE can accurately determine whether to exclude / vacate resources, thereby effectively mitigating conflicts in resource selection and saving radio resources.

[0036] Figure 7 7 is a flow chart illustrating a method 700 for resource indication in communication (e.g., sidelink communication) consistent with some embodiments of the present disclosure. The method 700 may be performed by a node in communication. The node may be a network node (e.g., a base station eNB, gNB), a roadside unit, a relay node, a mobile device, or a UE.

[0037] The method 700 includes: step 702, determining the overlap between the first resource reserved by the first node and the second resource reserved by the second node. In one embodiment, the overlap between the first resource and the second resource is determined by at least one of the second node or a third node different from the first node and the second node. In one embodiment, at least one of the first node or the second node is a UE in a sidelink communication. In one embodiment, at least one of the first node or the second node is a base station. In one embodiment, the first node is a UE and the second node is a base station. The third node may be a network node (e.g., a base station eNB, gNB), a roadside unit, a relay node, a mobile device, or other UE. For example, in one embodiment, the second node may determine the overlap between the first resource reserved by the first node and the second resource reserved by the second node. The second node may perform channel sensing in a sensing window (e.g., 100ms or 1100ms) to obtain information about the first resource reserved by the first node. Alternatively or additionally, the second node may use inter-UE coordination information, wherein one or more other UEs send information about the first resource to the second node.

[0038] The first resource reserved by the first node may be one or more resources in the time domain and / or frequency domain. For example, the first resource may include at least one of the following: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks. Similarly, the second resource reserved by the second node may be one or more resources in the time domain and / or frequency domain. For example, the second resource may include at least one of the following: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks.

[0039] The first resource and the second resource may be resources for the same radio access technology (RAT) or resources for different RATs. For example, in one embodiment, the first resource may be a resource for NR sidelink communication, and the second resource may be a resource for LTE sidelink communication.

[0040] The method 700 includes: step 704, transmitting one or more indications indicating an overlap between the first resource and the second resource. The one or more indications may be transmitted to the first node, or a third node different from the first node and the second node. For example, the second node or the third node may determine the overlap between the first resource and the second resource, and transmit one or more indications indicating the overlap between the first resource and the second resource to the first node or another third node.

[0041] The one or more indications may be transmitted on at least one of: PSFCH, PSSCH, PSCCH or MACCE.

[0042] In some embodiments, the one or more indications are transmitted internally within the first node. For example, the first node may be Figure 6 The type AUE shown, and thus includes a first module for a first sidelink communication and a second module for a second sidelink communication. The first module of the first node may determine an overlap between the first resource and the second resource and transmit the one or more indications to the second module of the first node.

[0043] In one embodiment, the first resource and the second resource are resources for the same RAT. For example, the first resource and the second resource may be resources for LTE or NR sidelink communication. In this embodiment, the one or more indications may include an indication indicating the same RAT.

[0044] In one embodiment, the first resource is a resource for a first RAT, and the second resource is a resource for a second RAT different from the first RAT. For example, the first resource may be a resource for NR sidelink communication, and the second resource may be a resource for LTE sidelink communication. In this embodiment, the one or more indications may include an indication indicating a first RAT and a second RAT that are different from each other.

[0045] In some embodiments, the one or more indications may include multiple indications. In these embodiments, method 700 may also include: configuring or preconfiguring the multiple indications based on the level of overlap. The level of overlap may be indicated as a percentage of overlap. Each of the multiple indications may correspond to at least one of the following: a percentage of overlap in the time domain, a percentage of overlap in the frequency domain, or a percentage of overall overlap in the time domain and the frequency domain. For example, in some embodiments, the one or more indications are PSFCH feedback, and the number of indications indicating the percentage of overlap may be configured or preconfigured. For example, as shown in Table 1 below, when there is an overlap of 0% to 10% of resources, PSFCH feedback may be sent using indication 1; when there is an overlap of 10% to 80% of resources, PSFCH feedback may be sent using indication 2; and when there is an overlap of 80% to 100% of resources, PSFCH feedback may be sent using indication 3.

[0046] [Table 1] Table 1: Exemplary overlap percentages and corresponding indicators Percentage of overlap instruct 0%≤Overlap<10% Instruction 1 10%≤Overlap<80% Instruction 2 80% ≤ Overlap ≤ 100% Instruction 3

[0047] In some embodiments, the one or more indications may include at least one of: an indication of an overlap of at least a portion of a reserved channel, an indication of an overlap of at least a portion of a reserved subchannel, an indication of an overlap of at least a portion of a reserved frame, an indication of an overlap of at least a portion of a reserved subframe, or an indication of an overlap of at least a portion of a reserved time slot. For example, in some embodiments, the one or more indications may include information about which portion of the resource is overlapping, such as an "upper", "lower" and / or "middle" portion of a reserved consecutive subchannel and / or an "early", "late" and / or "middle" portion of a reserved time slot (or subframe).

[0048] In some embodiments, the one or more indications may include multiple indications, the multiple indications including a first indication and a second indication. The first indication may indicate a higher level of overlap of resources than the second indication. In this case, if the first node receives N1 times of the first indication, or if the first node receives N2 times of the second indication, at least a portion of the first resource may be vacated or excluded, where N1 and N2 are integers and N1 is less than N2. N1 and N2 may be configured by the network or preconfigured in the first node.

[0049] In some embodiments, the one or more indications may include multiple indications, each of the multiple indications being assigned a priority (e.g., Prose Per-Packet Priority (PPPP) used in LTE or priority level / PC5 ​​Quality-of-Service (PQI) used in NR) or a relative priority. In these embodiments, the first UE may first consider the overlap of resources corresponding to the indication with the highest priority.

[0050] Figure 8 is a flow chart illustrating a method 800 for obtaining one or more resource indications in a communication consistent with some embodiments of the present disclosure.

[0051] Method 800 includes: step 802, reserving a first resource for communication by a first node. The first node may be a UE, a base station, a roadside unit, a relay node, or a mobile device. For example, in one embodiment, the first node may be a UE in a sidelink communication, and one or more candidate resources may be determined via channel sensing, and one or more resources for transmission or reception may be selected from these candidate resources. Alternatively or additionally, the first node may use inter-UE coordination information, wherein one or more other nodes send information about the first resource to be reserved to the first node. The first resource reserved by the first node may be one or more resources in the time domain and / or frequency domain. For example, the first resource may include at least one of the following: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks.

[0052] The method 800 includes: step 804, receiving, by a first node, one or more indications indicating an overlap between a reserved first resource and a second resource reserved by a second node. The second node may be a UE, a base station, a roadside unit, a relay node, or a mobile device. For example, in one embodiment, the second node may be a UE in a sidelink communication. The first node may receive the one or more indications from a second node, a network node (e.g., a base station), a roadside unit, a relay node, a mobile device, or any other UE different from the first node and the second node.

[0053] The second resource reserved by the second node may be one or more resources in the time domain and / or frequency domain. For example, the second resource may include at least one of the following: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks.

[0054] In one embodiment, the first node may internally receive one or more indications indicating an overlap between the reserved first resource and the second resource reserved by the second node, for example from an internal module. In one embodiment, the one or more indications are also transmitted to a third node different from the first node and the second node.

[0055] In one embodiment, the first resource and the second resource are resources for the same RAT, and the one or more indications may include an indication indicating the same RAT. For example, the first resource and the second resource may be resources for NR sidelink communication or LTE sidelink communication.

[0056] In some embodiments, the first resource is a resource for a first RAT, the second resource is a resource for a second RAT different from the first RAT, and the one or more indications may include an indication indicating the first RAT and the second RAT that are different from each other. For example, the first resource may be a resource for NR sidelink communication, and the second resource may be a resource for LTE sidelink communication.

[0057] The first node may receive the one or more indications on at least one of: PSFCH, PSSCH, PSCCH, or MAC CE. For example, in one embodiment, the indication may indicate that a subframe used for LTE sidelink communication overlaps with a number of time slots used for NR sidelink communication. In this case, the one or more indications of overlapping resources may be delivered to the first node as the number of overlapping PSSCH time slots on the PSFCH resources mapped to the overlapping PSSCH time slots.

[0058] In some embodiments, the one or more indications may include multiple indications, each of the multiple indications corresponding to at least one of: a percentage of overlap in the time domain, a percentage of overlap in the frequency domain, or a percentage of overlap in total in the time domain and in the frequency domain.

[0059] In some embodiments, each of the first resource and the second resource may include at least one of: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks. In some embodiments, the one or more indications may include at least one of: an indication of an overlap of at least a portion of a reserved channel, an indication of an overlap of at least a portion of a reserved subchannel, an indication of an overlap of at least a portion of a reserved frame, an indication of an overlap of at least a portion of a reserved subframe, or an indication of an overlap of at least a portion of a reserved time slot.

[0060] The method 800 includes: step 806, performing, by the first node, an adjustment based on the one or more indications so as to mitigate the effects of the overlap. For example, upon receiving the one or more indications, the first node may make an adjustment depending on the level of overlap. In some embodiments, performing the adjustment based on the one or more indications may include at least one of: determining whether to vacate at least a portion of the reserved first resources; determining whether to exclude at least a portion of the resources to be selected; changing the MCS for the first node; changing the transmission power for the first node; or performing a retransmission using an alternative resource reservation.

[0061] In one embodiment, performing the adjustment based on the one or more indications may include: determining whether to vacate or exclude at least a portion of the first resource based on the one or more indications. For example, if the percentage of overlap in the frequency domain and / or time domain exceeds a threshold, the first node may vacate or exclude at least a portion of the first resource (e.g., one or more time slots, one or more subframes, one or more subchannels, one or more channels, or one or more resource blocks). The threshold may be configured or preconfigured.

[0062] In one embodiment, the one or more indications may include multiple indications, the multiple indications including a first indication and a second indication, the first indication indicating a higher level of overlap than the second indication, and if the first UE receives the first indication N1 times, or if the first UE receives the second indication N2 times, at least a portion of the first resource is vacated or excluded, wherein N1 and N2 are integers and N1 is less than N2. N1 and N2 may be configured by the network or preconfigured in the first UE.

[0063] In one embodiment, the one or more indications may include a plurality of indications, and performing the adjustment based on the one or more indications may include: changing the MCS for the first node based on the plurality of indications. The MCS may correspond to at least one of a type or a quantity of the one or more indications. In this embodiment, a set of MCSs may be configured or preconfigured, each MCS in the set of MCSs corresponding to each indication in the plurality of indications.

[0064] In one embodiment, in performing the adjustment based on the one or more indications, the first UE may consider the priority (e.g., the PPPP used in LTE or the priority level / PC5PQI used in NR) or relative priority of the transmission scheduled to use the first resource. For example, if the associated transmission has a higher priority (more important) than the priority of the overlapping transmission, the first UE may not vacate or exclude resources. In some embodiments, priorities or relative priorities may be used in combination with other embodiments in the present disclosure. For example, by combining priorities and underlying RATs, mapping rules may be created. The mapping rules may take information about the same RAT (or not the same RAT) and the relative priorities of potential transmissions as input to decide whether to vacate / exclude resources. In some embodiments, the first UE only considers the overlap of PSSCH.

[0065] In one embodiment, in performing the adjustment based on the one or more indications, the first UE considers the one or more indications only when the distance between the first node and the device for determining overlap is less than a threshold distance. The threshold distance may be predefined, preconfigured or configured.

[0066] In one embodiment, performing the adjustment based on the one or more indications includes: changing the transmission power for the first node based on the plurality of indications. For example, the first UE uses reduced transmission power for transmissions with lower priority and uses increased transmission power for transmissions with higher priority.

[0067] In one embodiment, the one or more indications may include multiple indications transmitted from a single node at the same time. In one embodiment, the one or more indications may include multiple indications transmitted from a single node at different times. In one embodiment, the one or more indications may include multiple indications transmitted from multiple different nodes. In these embodiments, the method 800 may also include: aggregating the multiple indications in at least one of the time domain or the frequency domain so as to generate at least one of the time domain aggregation or the frequency domain aggregation. For example, the multiple indications may be aggregated based on content, source (e.g., from the same node), transmission time, type (time domain resource or frequency domain resource), etc. The method 800 may also include: determining whether the percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than the time domain threshold or the frequency domain threshold. The time domain threshold and the frequency domain threshold may be configured or preconfigured. The method 800 may also include: in response to determining that the percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than the time domain threshold or the frequency domain threshold, vacating or excluding at least one resource in the time domain or the frequency domain.

[0068] In some embodiments, depending on the indication type and / or number of indications received and / or the amount of overlap, the first UE may still use the reserved resources but with reduced transmission power to reduce interference caused to the overlapping resources. The first UE may employ this adjustment for low priority transmissions.

[0069] In some embodiments, the first UE may still use the reserved resources, but with increased transmission power to overcome interference caused to the overlapping resources.The first UE may employ this adjustment for high priority transmissions.

[0070] In some embodiments, the reduction or increase in power depends on the level of overlap of resources. The reduction or increase in power can be configured or preconfigured. The reduction or increase in power can also be associated with the priority of the transmission.

[0071] In some embodiments, depending on the indication type and / or the number of indications received, the first node may perform retransmissions using alternative resource reservations. In some embodiments, depending on the indication type and / or the number of indications received, the first node may decide to change the frequency and / or time position of its second stage SCI if it is indicated as overlapping.

[0072] In some embodiments, the first node may consider the overlap of resources from different RATs to be less harmful than the overlap of resources from the same RAT, and the first node may make different adjustments in these two situations. For example, in one embodiment, the first node may vacate or exclude resources when receiving an indication of overlap corresponding to the same RAT of potential transmission, otherwise, it may not vacate or exclude resources. In another embodiment, the first node may accept more overlaps within different RATs (in the form of an overlap percentage and / or the number of (one or more) indications) before deciding to vacate or exclude resources. In some embodiments, a set of possible frequencies and / or time positions for the second stage SCI in the case of overlap is configured or preconfigured so that the first node can perform blind decoding of the second stage SCI. In some embodiments, the changed frequency and / or time position for the second stage SCI is indicated by the first stage SCI.

[0073] In some embodiments, a cyclic shift may be applied to the signal sent in the PSFCH resource element (or actual PSFCH resource element selection) to indicate whether the overlap is intra-RAT or inter-RAT overlap of the resource. In some embodiments, an additional cyclic shift (or alternative resource element) may be used to indicate the priority of other resource reservations that conflict with the first resource reserved by the first UE.

[0074] In some embodiments, when PSFCH is used to carry the one or more indications, the multiple indications are spread over multiple PSFCH resources so that the multiple indications are carried without introducing a new PSFCH format. For example, a PSFCH resource from time slot n in subchannel x is used for bit 0, time slot n subchannel x+1 is used for bit 1, and so on.

[0075] In some embodiments, the indication may depend on the overall allocated resources, such as the overall allocated subchannels or the overall allocated contiguous subchannels. For example, if a maximum of three subchannels may be part of the resource allocation, the indication may indicate 1, 2 or 3 subchannels.

[0076] In some embodiments, the resource allocation uses more than one sub-channel and the one or more indications are provided only on PSFCH resources mapped from conflicting sub-channels. In one embodiment, more than two types of triggers may be used.

[0077] In some embodiments, the relevant overlap of the (one or more) triggering indication(s) can be based on the following potential transmission resources: (1) between the (one or more) resources of the node that triggers the indication(s) and the node that receives the indication(s); and / or (2) between the (one or more) resources of the node that triggers the indication(s) and a third node (UE or network); and / or (3) between the (one or more) resources of two other nodes (e.g., UE or network) other than the node that sends and receives the indication(s). In some embodiments, these three cases can result in different behaviors of the receiving node (e.g., in terms of the type of indication to be received and / or the number thereof) and / or can be combined.

[0078] In some embodiments, the first node is a type B UE in sidelink communication and receives a multi-level indication on the PSFCH from a type A UE. To this end, the PSFCH may be enhanced to indicate more than one indication.

[0079] In some embodiments, the first node may vacate or exclude the first resource using a pre-established rule. For example, the first node may vacate or exclude the first resource every other time (e.g., it vacates, then does not vacate, then vacates, etc.). In some embodiments, the first node may vacate or exclude the first resource based on a random percentage probability. The random percentage of the probability may depend on the indication type and / or the number of indications received.

[0080] In some embodiments, the type or quantity of the one or more indications may be changed based on a distance between the first node and the node transmitting the one or more indications. In some embodiments, a distance between the first node and a third node may be considered. In some embodiments, a distance between the third node and a fourth node may be considered. In some embodiments, the first node may use the received one or more indications in conjunction with its own resource reservation to decide whether to vacate or exclude the first resource.

[0081] The parameters mentioned in the present disclosure (e.g., the number N1, N2, the distance threshold) may be provided to the first node via configuration or pre-configuration. For example, when the first node is within the coverage of a network node, the parameters may be provided to the first node by a base station (e.g., a gNB) via a Radio Resource Control (RRC) message. Alternatively or additionally, the parameters may be provided to the first node via a network configuration (e.g., a Subscriber Identity Module (SIM) / Universal Subscriber Identity Module (USIM) toolkit from a Home Public Land Mobile Network (PLMN)).

[0082] Some embodiments of the present disclosure may involve a Rel-18 5G NR-V2X PC5 radio and software installed in a vehicle using Rel-18 5G NR-V2X PC5 Mode 2 for V2X services. Additionally or alternatively, the techniques in the present disclosure may be used for future 3GPP V2X technologies (e.g., 6G V2X) that use similar resource selection mechanisms.

[0083] Fig. 9 A block diagram of a node 900 for communication consistent with some embodiments of the present disclosure is shown. For example, the node 900 may be a UE, such as Figure 6 Node 900 may be a type AUE, a type B UE, or a type C UE as shown. Node 900 may also be a base station, a roadside unit, a relay node, or a mobile device. Node 900 may be installed in a mobile vehicle or in a fixed location. Node 900 may take any form, including but not limited to, a vehicle, a component installed in a vehicle, a roadside unit, a computer system, a laptop computer, a wireless terminal including a mobile phone, a wireless handheld device, or a wireless personal device, or any other form. See Fig. 9, the node 900 may include an antenna 902, which may be used to transmit electromagnetic signals to a base station or a UE, or to receive electromagnetic signals from a base station or a UE. The antenna 902 may include one or more antenna elements, and may enable different input-output antenna configurations, such as a multiple input multiple output (MIMO) configuration, a multiple input single output (MISO) configuration, and a single input multiple output (SIMO) configuration. In some embodiments, the antenna 902 may include multiple (e.g., tens or hundreds) of antenna elements, and may enable multi-antenna functions such as beamforming. In some embodiments, the antenna 902 is a single antenna.

[0084] Node 900 may include a transceiver 904 coupled to antenna 902. Transceiver 904 may be a wireless transceiver at node 900 and may communicate bidirectionally with a base station or UE. For example, node 900 is a UE in a sidelink communication, and transceiver 904 may receive / transmit wireless signals from / to a base station via downlink / uplink communication. Transceiver 904 may also receive / transmit wireless signals from / to other UEs or roadside units via sidelink communication. Transceiver 904 may include a modem for modulating packets and providing the modulated packets to antenna 902 for transmission, and for demodulating packets received from antenna 902.

[0085] Node 900 may include memory 906. Memory 906 may be any type of computer-readable storage medium, including volatile or non-volatile memory devices, or a combination thereof. Computer-readable storage media include, but are not limited to, non-transitory computer storage media. Non-transitory storage media may be accessed by general-purpose or special-purpose computers. Examples of non-transitory storage media include, but are not limited to, portable computer floppy disks, hard disks, random access memories (RAM), erasable programmable read-only memories (EPROM), read-only memories (ROM), electrically erasable programmable ROMs (EEPROM), digital versatile disks (DVD), flash memory, compact disks (CD) ROMs or other optical disk storage, magnetic disk storage or other magnetic storage devices, etc. Non-transitory media may be used to carry or store desired program code devices (e.g., instructions and / or data structures), and may be accessed by general-purpose or special-purpose computers, or general-purpose or special-purpose processors. In some examples, the software / program code may be transmitted from a remote source (e.g., a website, a server, etc.) using a coaxial cable, a fiber optic cable, a twisted pair, a digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves. In such examples, coaxial cables, fiber optic cables, twisted pairs, DSL, or wireless technologies such as infrared, radio, and microwaves are within the scope of the medium definition. Combinations of the above examples are also within the scope of computer-readable media.

[0086] The memory 906 may store information related to the identification of the node 900 and the signals and / or data received by the antenna 902. The memory 906 may also store post-processed signals and / or data. The memory 906 may also store computer-readable program instructions, mathematical models, and algorithms used in signal processing in the transceiver 904 and calculations in the processor 908. The memory 906 may also store computer-readable program instructions that are used to be executed by the processor 908 to operate the node 900 to perform various functions described in the present disclosure. In some embodiments, the memory 906 may include a Basic Input / Output System (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices. In some embodiments, the node 900 is a type A UE, such as Figure 6As shown, the memory 906 includes both a first SL module (e.g., an NR SL module) and a second SL module (e.g., an LTE SL module). In some embodiments, the UE 900 is a type B UE, such as Figure 6 As shown, the memory 906 includes only the NR SL module. In some embodiments, the UE 900 is a type C UE, such as Figure 6 As shown, the memory 906 only includes the LTE SL module. As described above, in some embodiments, the node 900 may be a base station, a roadside unit, a relay node, or a mobile device.

[0087] The computer-readable program instructions of the present disclosure can be assembly instructions, instruction set architecture (Instruction-Set-Architecture, ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages ​​(including object-oriented programming languages ​​and traditional procedural programming languages). The computer-readable program instructions can be executed completely on a computing device as an independent software package, or partly executed on a first computing device and partly executed on a second computing device away from the first computing device. In the latter scenario, the second computing device away can be connected to the first computing device through any type of network (including a local area network (Local Area Network, LAN) or a wide area network (Wide Area Network, WAN)).

[0088] Node 900 may include a processor 908, which may include a hardware device with processing capabilities. Processor 908 may include at least one of a general-purpose processor, a digital signal processor (DSP), a central processing unit (CPU), a microcontroller, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or other programmable logic devices. Examples of general-purpose processors include, but are not limited to, microprocessors, any conventional processors, controllers, microcontrollers, or state machines. In some embodiments, processor 908 may be implemented using a combination of devices (e.g., a combination of DSP and microprocessor, multiple microprocessors, one or more microprocessors in combination with DSP cores, or any other such configuration). Processor 908 may receive downlink signals or sidelink signals from transceiver 904 and further process the signals. Processor 908 may also receive data packets from transceiver 904 and further process the packets. In some embodiments, processor 908 may be configured to operate a memory using a memory controller. In some embodiments, the memory controller may be integrated into processor 908. The processor 908 may be configured to execute computer-readable instructions stored in a memory (eg, the memory 906 ) to cause the UE 900 to perform various functions.

[0089] Node 900 may include a global positioning system (GPS) 910. GPS 910 may be used to enable location-based services or other services based on the geographic location of node 900, and / or synchronization between UEs. GPS 910 may receive a global navigation satellite system (GNSS) signal from a single satellite or multiple satellite signals via antenna 902 and provide the geographic location of node 900 (e.g., the coordinates of node 900). In some embodiments, GPS 910 may be omitted.

[0090] UE 900 may include an input / output (I / O) device 912, which may be used to communicate the results of signal processing and calculation to a user or other device. I / O device 912 may include a user interface, which includes a display and an input device for transmitting user commands to processor 908. The display may be configured to display the state of signal reception at UE 900, the data stored at memory 906, the state of signal processing and the results of calculation, etc. The display may include, but is not limited to, a cathode ray tube (CRT), a liquid crystal display (LCD), a light-emitting diode (LED), a plasma gas display, a touch screen, or other image projection devices for displaying information to a user. The input device may be any type of computer hardware device for receiving data and control signals from a user. The input device may include, but is not limited to, a keyboard, a mouse, a scanner, a digital camera, a joystick, a trackball, a cursor direction key, a touch screen monitor, or an audio / video commander, etc.

[0091] The node 900 may also include a machine interface 914 , such as an electrical bus that connects the transceiver 904 , memory 906 , processor 908 , GPS 910 , and I / O devices 912 .

[0092] In some embodiments, the node 900 may be configured or programmed to provide one or more resource indications. For example, the node 900 may be configured or programmed to: determine an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and transmit one or more indications indicating an overlap between the first resource and the second resource.

[0093] In some embodiments, the node 900 may be configured or programmed to obtain resource indications in the communication. For example, the node 900 may be configured or programmed to: reserve a first resource for communication; receive one or more indications indicating an overlap between the reserved first resource and the second resource reserved by the second node; and perform adjustments based on the one or more indications to mitigate the impact of the overlap.

[0094] As used in this disclosure, the use of the term "or" in a list of items indicates an inclusive list. A list of items may be prefixed with phrases such as "at least one" or "one or more". For example, a list of at least one of A, B, or C includes A or B or C or AB (i.e., A and B) or AC or BC or ABC (i.e., A and B and C). In addition, as used in this disclosure, prefixing a list of conditions with the phrase "based on" should not be interpreted as "based only on" a set of conditions, but rather should be interpreted as "based at least in part on" a set of conditions. For example, a result described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure.

[0095] In this specification, the terms "include", "contain" or "comprises" are used interchangeably and have the same meaning and are interpreted as inclusive and open-ended. The terms "include", "contain" or "comprises" may be used before a list of elements and indicate that at least all of the listed elements in the list are present, but other elements that are not in the list may also be present. For example, if A includes B and C, then {B, C} and {B, C, D} are both within the scope of A.

[0096] In conjunction with the accompanying drawings, the present disclosure describes example configurations that do not represent all examples that can be implemented or all configurations within the scope of the present disclosure. The term "exemplary" should not be interpreted as "preferred" or "advantageous compared to other examples", but should be interpreted as "illustration, instance, or example". By reading this disclosure, including the description of the embodiments and the accompanying drawings, a person of ordinary skill in the art will understand that alternative embodiments can be used to implement the technology disclosed herein. Those skilled in the art will understand that the embodiments described herein or certain features of the embodiments can be combined to obtain other embodiments for practicing the technology described in the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

[0097] The flowchart and block diagram in the figure show examples of the architecture, functions and operations of possible implementations of the systems, methods and devices according to various embodiments. It should be noted that in some alternative implementations, the functions marked in the box may occur outside the order marked in the figure. For example, depending on the functions involved, the two boxes shown in succession can actually be executed substantially simultaneously, or the boxes can sometimes be executed in reverse order. Similarly, in the method consistent with various embodiments, additional steps may be included in such a method, and some steps may be omitted or combined.

[0098] It should be understood that the described embodiments are not mutually exclusive, and elements, components, materials or steps described in conjunction with one exemplary embodiment may be combined with or eliminated from other embodiments in a suitable manner to achieve the desired design purpose.

[0099] References herein to "some embodiments" or "some exemplary embodiments" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment. The appearance of the phrases "one embodiment," "some embodiments," or "another embodiment" throughout this disclosure does not necessarily refer to the same embodiment, nor are they necessarily separate or alternative embodiments that are mutually exclusive with other embodiments.

[0100] In addition, the articles "a" and "an" as used in this disclosure and the appended claims should generally be construed to mean "one or more" unless specified otherwise or clearly directed to a singular form by context.

[0101] Unless expressly stated otherwise, each numerical value and range should be interpreted as being approximate, as would the word "about" or "approximately" preceding the value of the numerical value or range.

[0102] Although elements in the following method claims, if any, are recited in a specific order, these elements are not necessarily intended to be limited to being implemented in that specific order unless the claim recitation otherwise implies a specific order for implementing some or all of these elements.

[0103] It should be understood that certain features of the present disclosure described in the context of separate embodiments for the sake of clarity may also be provided in combination in a single embodiment. Conversely, various features of the present specification described in the context of a single embodiment for the sake of brevity may also be provided separately, or in any suitable sub-combination, or as appropriate in any other described embodiment of the present specification. Certain features described in the context of various embodiments are not essential features of these embodiments unless otherwise stated.

[0104] It will be further understood that those skilled in the art may make various modifications, substitutions and changes to the details, materials and arrangements of the components described and illustrated for the purpose of explaining the nature of the described embodiments without departing from the scope. Accordingly, the appended claims cover all such substitutions, modifications and changes falling within the aspects of the claims.

[0105] Clause 1. A method for providing resource indication in a communication, comprising: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and One or more indications are transmitted that indicate an overlap between the first resources and the second resources.

[0106] Clause 2. The method of clause 1, wherein at least one of the first node or the second node is a user equipment (UE) in sidelink communication.

[0107] Clause 3. The method of clause 1, wherein at least one of the first node or the second node is a base station.

[0108] Clause 4. The method of clause 1, wherein the first node is a UE and the second node is a base station.

[0109] Clause 5. The method of clause 1, wherein the one or more indications are transmitted to the first node or a third node different from the first node and the second node.

[0110] Clause 6. The method of clause 1, wherein the overlap between the first resource and the second resource is determined by at least one of the second node or a third node different from the first node and the second node.

[0111] Clause 7. A method according to Clause 1, wherein the first node includes a first module for a first sidelink communication and a second module for a second sidelink communication, and the overlap between the first resource and the second resource is determined by the first module of the first node and transmitted to the second module of the first node.

[0112] Clause 8. A method according to clause 1, wherein the one or more indications are transmitted on at least one of: a physical sidelink feedback channel (PSFCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), or a media access control (MAC) control element (CE).

[0113] Clause 9. The method of clause 1, wherein the first resources and the second resources are resources for a same radio access technology (RAT), and the one or more indications further include an indication indicating the same RAT.

[0114] Clause 10. The method of clause 1, wherein the first resources are resources for a first RAT, the second resources are resources for a second RAT different from the first RAT, and the one or more indications further include indications of the first RAT and the second RAT being different from each other.

[0115] Clause 11. The method of clause 10, wherein the first RAT is New Radio (NR) and the second RAT is Long Term Evolution (LTE).

[0116] Clause 12. The method of clause 1, wherein the one or more indications include a plurality of indications, Each of the multiple indications corresponds to at least one of the following: the percentage of the overlap in the time domain, the percentage of the overlap in the frequency domain, or the overall percentage of the overlap in the time domain and the frequency domain.

[0117] Clause 13. The method of clause 1, wherein each of the first resource and the second resource comprises at least one of: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks.

[0118] Clause 14. A method according to clause 1, wherein the one or more indications include at least one of: an indication of an overlap of at least a portion of a reserved channel, an indication of an overlap of at least a portion of a reserved subchannel, an indication of an overlap of at least a portion of a reserved frame, an indication of an overlap of at least a portion of a reserved subframe, or an indication of an overlap of at least a portion of a reserved time slot.

[0119] Clause 15. A method according to clause 1, wherein the one or more indications include multiple indications, the multiple indications include a first indication and a second indication, the first indication indicates a higher level of overlap than the second indication, and if the first node receives the first indication N1 times, or if the first node receives the second indication N2 times, at least a portion of the first resource is vacated or excluded, wherein N1 and N2 are integers and N1 is less than N2.

[0120] Clause 16. The method of clause 15, wherein the N1 and the N2 are configured by a network or pre-configured in the first node.

[0121] Clause 17. The method of clause 1, wherein the one or more indications include a plurality of indications, each indication of the plurality of indications being assigned a priority or a relative priority.

[0122] Clause 18. A method for obtaining an indication of one or more resources in a communication, comprising: reserving, by the first node, a first resource for the communication; receiving, by the first node, one or more indications indicating an overlap between the first resources being reserved and second resources reserved by a second node; and Adjustments are performed by the first node based on the one or more indications such that an effect of the overlap is mitigated.

[0123] Clause 19. The method of clause 18, wherein performing the adjusting based on the one or more indications comprises at least one of: determining whether to vacate at least a portion of the reserved first resource; determining whether to exclude at least a portion of the resources to be selected; changing a modulation and coding scheme (MCS) for the first node; changing the transmission power for the first node; or The retransmission is performed using an alternative resource reservation.

[0124] Clause 20. The method of clause 18, wherein at least one of the first node or the second node is a UE in sidelink communication.

[0125] Clause 21. The method of clause 18, wherein at least one of the first node or the second node is a base station.

[0126] Clause 22. The method of clause 18, wherein the first node is a UE and the second node is a base station.

[0127] Clause 23. The method of clause 18, wherein the one or more indications are transmitted to the first node or a third node different from the first node and the second node.

[0128] Clause 24. The method of clause 18, wherein the one or more indications are received from at least one of: the first node, the second node, or a third node.

[0129] Clause 25. The method of clause 24, wherein each of the first node, the second node, and the third node is at least one of: a UE, a base station, a roadside unit, a relay node, or a mobile device.

[0130] Clause 26. A method according to clause 18, wherein the one or more indications are received on at least one of: a physical sidelink feedback channel (PSFCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), or a media access control (MAC) control element (CE).

[0131] Clause 27. The method of clause 18, wherein the first resources and the second resources are resources for a same radio access technology (RAT), and the one or more indications further include an indication indicating the same RAT.

[0132] Clause 28. The method of clause 18, wherein the first resources are resources for a first RAT, the second resources are resources for a second RAT different from the first RAT, and the one or more indications further include indications of the first RAT and the second RAT being different from each other.

[0133] Clause 29. The method of clause 28, wherein the first RAT is New Radio (NR) and the second RAT is Long Term Evolution (LTE).

[0134] Clause 30. A method according to clause 18, wherein the one or more indications include multiple indications, each of the multiple indications corresponding to at least one of: the percentage of the overlap in the time domain, the percentage of the overlap in the frequency domain, or the percentage of the overlap in the time domain and the frequency domain in total.

[0135] Clause 31. A method according to clause 18, wherein each of the first resource and the second resource comprises at least one of the following: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks.

[0136] Clause 32. A method according to clause 18, wherein the one or more indications include at least one of: an indication of an overlap of at least a portion of a reserved channel, an indication of an overlap of at least a portion of a reserved subchannel, an indication of an overlap of at least a portion of a reserved frame, an indication of an overlap of at least a portion of a reserved subframe, or an indication of an overlap of at least a portion of a reserved time slot.

[0137] Clause 33. A method according to clause 18, wherein the one or more indications include multiple indications, the multiple indications include a first indication and a second indication, the first indication indicates a higher level of overlap than the second indication, and if the first node receives the first indication N1 times, or if the first node receives the second indication N2 times, at least a portion of the first resource is vacated or excluded, wherein N1 and N2 are integers and N1 is less than N2.

[0138] Clause 34. The method of clause 33, wherein the N1 and the N2 are configured by a network or pre-configured in the first node.

[0139] Clause 35. The method of clause 19, wherein the one or more indications include a plurality of indications, and performing the adjustment based on the one or more indications includes: changing the MCS for the first node based on the plurality of indications, and The MCS corresponds to at least one of the type or quantity of the one or more indications.

[0140] Clause 36. The method according to clause 18, further comprising: The priority or relative priority of transmissions scheduled to use the first resource is taken into account.

[0141] Clause 37. The method according to clause 18, further comprising: The one or more indications are considered only when a distance between the first node and the device determining the overlap is less than a threshold distance.

[0142] Clause 38. The method of clause 19, wherein performing the adjusting based on the one or more indications comprises: changing the transmission power for the first node based on the plurality of indications, and Therein, a reduced transmission power is used for transmissions having a lower priority, and an increased transmission power is used for transmissions having a higher priority.

[0143] Clause 39. The method of Clause 18, wherein the one or more indications include multiple indications transmitted from a single device at the same time or at different times.

[0144] Clause 40. The method of Clause 18, wherein the one or more indications include multiple indications transmitted from multiple different devices.

[0145] Clause 41. The method of clause 18, wherein the one or more indications include a plurality of indications, and the method further comprises: aggregating the plurality of indications in at least one of a time domain or a frequency domain so as to generate at least one of a time domain aggregation or a frequency domain aggregation; determining whether a percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than a time domain threshold or a frequency domain threshold, wherein the time domain threshold and the frequency domain threshold are configured or preconfigured; and In response to determining that the percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than the time domain threshold or the frequency domain threshold, at least one resource in the time domain or the frequency domain is vacated or excluded.

[0146] Clause 42. Means for providing one or more resource indications, the means comprising: a memory storing instructions; and a processor configured to execute instructions stored in the memory to: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and One or more indications are transmitted that indicate the overlap between the first resources and the second resources.

[0147] Clause 43. The apparatus of clause 42, wherein at least one of the first node or the second node is a user equipment (UE) in sidelink communication.

[0148] Clause 44. The apparatus of clause 42, wherein at least one of the first node or the second node is a base station.

[0149] Clause 45. The apparatus of clause 42, wherein the first node is a UE and the second node is a base station.

[0150] Clause 46. The apparatus of clause 42, wherein the apparatus is the first node, the second node, or a third node different from the first node and the second node.

[0151] Clause 47. The apparatus of clause 42, wherein the one or more indications are transmitted to the first node or a third node different from the first node and the second node.

[0152] Clause 48. An apparatus according to clause 46, wherein the apparatus is the first node, and wherein the first node includes a first module for first sidelink communication and a second module for second sidelink communication, and the overlap between the first resource and the second resource is determined by the first module of the first node and transmitted to the second module of the first node.

[0153] Clause 49. An apparatus according to clause 42, wherein the one or more indications are transmitted on at least one of: a physical sidelink feedback channel (PSFCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), or a media access control (MAC) control element (CE).

[0154] Clause 50. The apparatus of clause 42, wherein the first resources and the second resources are resources for a same radio access technology (RAT), and the one or more indications further include an indication indicating the same RAT.

[0155] Clause 51. An apparatus according to clause 42, wherein the first resources are resources for a first RAT, the second resources are resources for a second RAT different from the first RAT, and the one or more indications also include indications indicating the first RAT and the second RAT that are different from each other.

[0156] Clause 52. The apparatus of clause 51, wherein the first RAT is New Radio (NR) and the second RAT is Long Term Evolution (LTE).

[0157] Clause 53. An apparatus according to clause 42, wherein the one or more indications include multiple indications, and wherein each of the multiple indications corresponds to at least one of: the percentage of the overlap in the time domain, the percentage of the overlap in the frequency domain, or the percentage of the overlap in the time domain and the frequency domain overall.

[0158] Clause 54. An apparatus according to clause 42, wherein each of the first resource and the second resource comprises at least one of: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks.

[0159] Clause 55. An apparatus according to clause 42, wherein the one or more indications include at least one of: an indication of an overlap of at least a portion of a reserved channel, an indication of an overlap of at least a portion of a reserved subchannel, an indication of an overlap of at least a portion of a reserved frame, an indication of an overlap of at least a portion of a reserved subframe, or an indication of an overlap of at least a portion of a reserved time slot.

[0160] Clause 56. An apparatus according to clause 42, wherein the one or more indications include multiple indications, the multiple indications include a first indication and a second indication, the first indication indicates a higher level of overlap than the second indication, and if the first node receives the first indication N1 times, or if the first node receives the second indication N2 times, at least a portion of the first resource is vacated or excluded, wherein N1 and N2 are integers and N1 is less than N2.

[0161] Clause 57. The apparatus of clause 56, wherein the N1 and the N2 are configured by a network or preconfigured in the first node.

[0162] Clause 58. The apparatus of clause 42, wherein the one or more indications include a plurality of indications, each indication of the plurality of indications being assigned a priority or a relative priority.

[0163] Clause 59. A first node for obtaining an indication of resources in a communication, the first node comprising: a memory storing instructions; and a processor configured to execute instructions stored in the memory to: reserving a first resource for the communication; receiving one or more indications indicating an overlap between the first resource being reserved and a second resource reserved by a second node; and Adjustments are performed based on the one or more indications such that an effect of the overlap is mitigated.

[0164] Clause 60. The first node of clause 59, wherein performing the adjusting based on the one or more indications comprises at least one of: determining whether to vacate at least a portion of the reserved first resource; determining whether to exclude at least a portion of the resources to be selected; changing a modulation and coding scheme (MCS) for the first node; changing the transmission power for the first node; or The retransmission is performed using an alternative resource reservation.

[0165] Clause 61. The first node of clause 59, wherein at least one of the first node or the second node is a UE in sidelink communication.

[0166] Clause 62. The first node of clause 59, wherein at least one of the first node or the second node is a base station.

[0167] Clause 63. The first node of clause 59, wherein the first node is a UE and the second node is a base station.

[0168] Clause 64. The first node of Clause 59, wherein the one or more indications are received from at least one of: the second node, or a third node different from the first node and the second node.

[0169] Clause 65. The first node of clause 64, wherein each of the first node, the second node, and the third node is at least one of: a UE, a base station, a roadside unit, a relay node, or a mobile device.

[0170] Clause 66. A first node according to clause 59, wherein the one or more indications are received on at least one of: a physical sidelink feedback channel (PSFCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), or a media access control (MAC) control element (CE).

[0171] Clause 67. The first node of clause 59, wherein the first resources and the second resources are resources for a same radio access technology (RAT), and the one or more indications further comprise an indication indicating the same RAT.

[0172] Clause 68. A first node according to clause 59, wherein the first resources are resources for a first RAT, the second resources are resources for a second RAT different from the first RAT, and the one or more indications also include an indication indicating the first RAT and the second RAT being different from each other.

[0173] Clause 69. The first node of clause 68, wherein the first RAT is New Radio (NR) and the second RAT is Long Term Evolution (LTE).

[0174] Clause 70. A first node according to clause 59, wherein the one or more indications include multiple indications, each of the multiple indications corresponding to at least one of: the percentage of the overlap in the time domain, the percentage of the overlap in the frequency domain, or the percentage of the overlap in the time domain and the frequency domain in total.

[0175] Clause 71. A first node according to clause 59, wherein each of the first resource and the second resource comprises at least one of: one or more time slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks.

[0176] Clause 72. A first node according to clause 59, wherein the one or more indications include at least one of: an indication of an overlap of at least a portion of a reserved channel, an indication of an overlap of at least a portion of a reserved subchannel, an indication of an overlap of at least a portion of a reserved frame, an indication of an overlap of at least a portion of a reserved subframe, or an indication of an overlap of at least a portion of a reserved time slot.

[0177] Clause 73. A first node according to clause 59, wherein the one or more indications include multiple indications, the multiple indications include a first indication and a second indication, the first indication indicates a higher level of overlap than the second indication, and if the first node receives the first indication N1 times, or if the first node receives the second indication N2 times, at least a portion of the first resource is vacated or excluded, wherein N1 and N2 are integers and N1 is less than N2.

[0178] Clause 74. The first node of clause 73, wherein the N1 and the N2 are configured by a network or pre-configured in the first node.

[0179] Clause 75. The first node of clause 60, wherein the one or more indications include a plurality of indications, and performing the adjustment based on the one or more indications includes: changing the MCS for the first node based on the plurality of indications, and The MCS corresponds to at least one of the type or quantity of the one or more indications.

[0180] Clause 76. The first node of clause 59, wherein the processor is further configured to execute instructions stored in the memory to: The priority or relative priority of transmissions scheduled to use the first resource is taken into account.

[0181] Clause 77. The first node of clause 59, wherein the processor is further configured to execute instructions stored in the memory to: The one or more indications are considered only when a distance between the first node and the device determining the overlap is less than a threshold distance.

[0182] Clause 78. The first node of clause 60, wherein performing the adjusting based on the one or more indications comprises: changing the transmission power for the first node based on the plurality of indications, and Therein, a reduced transmission power is used for transmissions having a lower priority, and an increased transmission power is used for transmissions having a higher priority.

[0183] Clause 79. The first node of Clause 59, wherein the one or more indications comprise multiple indications transmitted from a single device at the same time or at different times.

[0184] Clause 80. The first node of Clause 59, wherein the one or more indications comprise a plurality of indications transmitted from a plurality of different devices.

[0185] Clause 81. The first node of clause 59, wherein the one or more indications include a plurality of indications, and wherein the processor is further configured to execute instructions stored in the memory to: aggregating the plurality of indications in at least one of a time domain or a frequency domain so as to generate at least one of a time domain aggregation or a frequency domain aggregation; determining whether a percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than a time domain threshold or a frequency domain threshold, wherein the time domain threshold and the frequency domain threshold are configured or preconfigured; and In response to determining that the percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than the time domain threshold or the frequency domain threshold, at least one resource in the time domain or the frequency domain is vacated or excluded.

[0186] Clause 82. A non-transitory computer-readable medium storing instructions executable by one or more processors of an apparatus for communication to perform a method comprising: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; and One or more indications are transmitted that indicate an overlap between the first resources and the second resources.

[0187] Clause 83. A non-transitory computer-readable medium storing instructions executable by one or more processors of a first node for communication to perform a method comprising: reserving a first resource for the communication; receiving one or more indications indicating an overlap between the first resource being reserved and a second resource reserved by a second node; and Adjustments are performed based on the one or more indications such that an effect of the overlap is mitigated.

Claims

1. A method for providing resource indication in communication, comprising: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; as well as One or more indications are transmitted that indicate the overlap between the first resources and the second resources.

2. The method according to claim 1, wherein: The one or more indications are transmitted to the first node or a third node different from the first node and the second node.

3. The method according to claim 1, wherein: The overlap between the first resource and the second resource is determined by at least one of the second node or a third node different from the first node and the second node.

4. The method according to claim 1, wherein: The first node comprises a first module for a first sidelink communication and a second module for a second sidelink communication, and the overlap between the first resource and the second resource is determined by the first module of the first node and transmitted to the second module of the first node.

5. The method according to claim 1, wherein: The one or more indications are transmitted on at least one of: a physical sidelink feedback channel (PSFCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), or a medium access control (MAC) control element (CE).

6. The method according to claim 1, wherein: The first resource and the second resource are resources for a same radio access technology (RAT), and the one or more indications further include an indication indicating the same RAT.

7. The method according to claim 1, wherein: The first resources are resources for a first RAT, the second resources are resources for a second RAT different from the first RAT, and the one or more indications further include an indication indicating the first RAT and the second RAT that are different from each other.

8. The method according to claim 1, wherein: The one or more instructions include a plurality of instructions, Each of the multiple indications corresponds to at least one of the following: the percentage of the overlap in the time domain, the percentage of the overlap in the frequency domain, or the overall percentage of the overlap in the time domain and the frequency domain.

9. The method according to claim 1, wherein: The one or more indications include at least one of: an indication of an overlap of at least a portion of a reserved channel, an indication of an overlap of at least a portion of a reserved subchannel, an indication of an overlap of at least a portion of a reserved frame, an indication of an overlap of at least a portion of a reserved subframe, or an indication of an overlap of at least a portion of a reserved time slot.

10. The method according to claim 1, wherein: The one or more indications include multiple indications, the multiple indications include a first indication and a second indication, the first indication indicates a higher level of the overlap than the second indication, and if the first node receives the first indication N1 times, or if the first node receives the second indication N2 times, at least a portion of the first resource is vacated or excluded, wherein N1 and N2 are integers and N1 is less than N2.

11. The method according to claim 1, wherein: The one or more indications include a plurality of indications, each indication of the plurality of indications being assigned a priority or a relative priority.

12. A method for obtaining one or more resource indications in a communication, comprising: reserving, by the first node, a first resource for the communication; receiving, by the first node, one or more indications indicating an overlap between the first resources being reserved and second resources reserved by a second node; as well as Adjustments are performed by the first node based on the one or more indications such that an effect of the overlap is mitigated.

13. The method according to claim 12, wherein: Performing the adjustment based on the one or more indications includes at least one of: determining whether to vacate at least a portion of the reserved first resource; determining whether to exclude at least a portion of the resources to be selected; changing a modulation and coding scheme (MCS) for the first node; changing the transmission power for the first node; or The retransmission is performed using an alternative resource reservation.

14. The method according to claim 13, wherein: The one or more indications include a plurality of indications, and performing the adjustment based on the one or more indications includes: changing the MCS for the first node based on the plurality of indications, and The MCS corresponds to at least one of the type or quantity of the one or more indications.

15. The method according to claim 12, further comprising: The priority or relative priority of transmissions scheduled to use the first resource is taken into account.

16. The method according to claim 12, further comprising: The one or more indications are considered only when a distance between the first node and the device determining the overlap is less than a threshold distance.

17. The method according to claim 13, wherein: Performing the adjusting based on the one or more indications includes: changing the transmission power for the first node based on the plurality of indications, and Therein, a reduced transmission power is used for transmissions having a lower priority, and an increased transmission power is used for transmissions having a higher priority.

18. The method according to claim 12, wherein: The one or more indications include a plurality of indications, and the method further includes: aggregating the plurality of indications in at least one of a time domain or a frequency domain so as to generate at least one of a time domain aggregation or a frequency domain aggregation; determining whether a percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than a time domain threshold or a frequency domain threshold, wherein the time domain threshold and the frequency domain threshold are configured or preconfigured; and In response to determining that the percentage of overlap of at least one of the time domain aggregation or the frequency domain aggregation is greater than the time domain threshold or the frequency domain threshold, at least one resource in the time domain or the frequency domain is vacated or excluded.

19. Means for providing one or more resource indications, the means comprising: a memory storing instructions; as well as a processor configured to execute instructions stored in the memory to: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; as well as One or more indications are transmitted that indicate the overlap between the first resources and the second resources.

20. A first node for obtaining a resource indication in a communication, the first node comprising: a memory storing instructions; as well as a processor configured to execute instructions stored in the memory to: reserving a first resource for the communication; receiving one or more indications indicating an overlap between the first resource being reserved and a second resource reserved by a second node; as well as Adjustments are performed based on the one or more indications such that an effect of the overlap is mitigated.

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