Resource Suggestion in Communication Networks

Abstract

A method, apparatus, and system for providing resource suggestions in communications is disclosed, the method including 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 suggestions indicating the overlap between the first resource and the second resource.

Description

[Technical Field]

[0001] Cross-reference to related patent applications This application claims the benefit of U.S. Provisional Application No. 63 / 377,568, filed September 29, 2022, entitled "RESOURCE INDICATION IN SIDELINK COMMUNICATION," which is incorporated by reference herein in its entirety.

[0002] FIELD OF THE DISCLOSURE Apparatus and methods according to the present disclosure relate generally to communications, and more particularly to methods, systems, and devices for indicating resource overlap in communications. [Background technology]

[0003] Sidelink communication technologies enable direct communication between two or more devices. When a first user equipment (UE) in a sidelink communication shares radio resources with a second UE in the same or a different sidelink communication, conflicts in resource selection may occur, for example, due to overlap between 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 surrendering some or all of the reserved resources or by changing transmit power. Currently, there is no flexible and accurate way to indicate the level of overlap, which can lead to inefficient resource selection and even unnecessary resource waste. Improved systems and methods for flexibly and efficiently indicating resource overlap are desired.

[0004] The resource selection procedure for 3GPP (3rd Generation Partnership Project) Release 16 / 17 5G New Radio (NR) vehicle-to-everything (V2X) PC5 Mode 2 is specified in 3GPP Technical Specifications (TS) 38.213, TS 38.214, and TS 38.321. For resource selection, a UE performs channel sensing within a sensing window and collects resource reservation information of other UEs based on sidelink control information (SCI) decoding to identify candidate resources within a selection window T (T = [T1, T2]). First, the UE excludes some time slots from the selection window due to unmonitored resources within the sensing window that are undetectable due to its own transmissions (i.e., half-duplex constrained). The UE then further excludes resources reserved by other UEs from the selection window if the corresponding sidelink-reference signal received power (SL-RSRP) exceeds a (pre-)configured SL-RSRP exclusion threshold. After resource exclusion, the number of candidate resources is at least X% of the total number of resources in the selection window. Otherwise, the UE increases the SL-RSRP exclusion threshold by 3 dB until at least X% of resources 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 may be used for subsequent transmissions multiple times at fixed time intervals (i.e., semi-persistent scheduling (SPS)) or only once (i.e., one-shot transmission (OST)). The UE may also retransmit a packet multiple times with or without feedback from the receiving UE to improve reliability (i.e., hybrid automatic repeat request (HARQ)). tomatic repeat request).

[0005] To obtain information for sensing and receiving packets from other UEs, the UE first decodes the sidelink control information (SCI). In Release 16, there are two types of SCI: the first-stage SCI (SCI format 1-A) and the second-stage SCI (SCI format 2-A or 2-B), as defined in 3GPP TS38.212. The first-stage SCI carries resource reservation information for future transmissions, as well as information about the physical sidelink shared channel (PSSCH) resource allocation, modulation and coding scheme (MCS), demodulation reference signal (DMRS) pattern, and second-stage SCI format. The second-stage SCI carries control information for HARQ procedures, source / destination IDs, distance-based groupcast information (UE zone identification (ID) and coverage requirements), and so on. Based on the resource reservation included in the first stage SCI, each UE avoids using time / frequency resources reserved by other UEs when performing resource (re)selection.

[0006] Release 17 5G NR-V2X PC5 Mode 2 introduces inter-UE coordination (IUC), in which a first UE (UE-A) sends resource coordination information to a second UE (UE-B), which uses the information for its own resource (re)selection. Two modes of inter-UE coordination are supported: IUC method 1: UE-A can provide UE-B with suggestions for resources that should preferably be included or excluded from UE-B's (re)selection resources. Given the resources to include, UE-B may rely solely on these resources, at least if it does not support sensing / resource exclusion, or may combine these resources with those identified by its own sensing procedure before making the final selection. The suggestions from UE-A to UE-B are sent in the medium access control (MAC) control element (CE) and / or the second stage SCI. IUC method 2: UE-A can provide an indication to UE-B that resources reserved for UE-B's transmissions (which may or may not be destined for 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 on the physical sidelink feedback channel (PSFCH). Summary of the Invention [Means for solving the problem]

[0007] One embodiment of the present disclosure includes a method for providing an indication of resources in a communication, the method including 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 one embodiment of the present disclosure, there is provided a method for obtaining suggestions for one or more resources in a communication, the method including: a first node reserving first resources for a communication, receiving one or more suggestions indicating an overlap between the reserved first resources and a second resource reserved by a second node, and performing adjustments based on the one or more suggestions to mitigate an effect of the overlap.

[0009] According to one embodiment of the present disclosure, an apparatus for providing suggestions of one or more resources is provided, the apparatus including: a memory storing instructions; and a processor executing 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 to send one or more suggestions indicating the overlap between the first resource and the second resource.

[0010] According to one embodiment of the present disclosure, a first node for obtaining resource suggestions for communication is provided, the first node including: a memory storing instructions; and a processor executing the instructions stored in the memory to reserve first resources for communication, receive one or more suggestions indicating overlap between the reserved first resources and second resources reserved by a second node, and perform adjustments based on the one or more suggestions to mitigate an effect of the overlap.

[0011] According to one embodiment of the present disclosure, a non-transitory computer-readable medium storing instructions executable by one or more processors of a communications device for performing a 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 one embodiment of the present disclosure, a non-transitory computer-readable medium storing instructions executable by one or more processors of a first node for communication is provided, the method including reserving first resources for communication, receiving one or more indications indicating an overlap between the reserved first resources and a second resource reserved by a second node, and performing adjustments based on the one or more indications to mitigate an effect of the overlap. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a flowchart illustrating a method for resource selection in communications according to one embodiment of the present disclosure. [Figure 2] 2 is a schematic diagram illustrating a resource candidate determination procedure according to the method of FIG. 1 according to one embodiment of the present disclosure. [Figure 3] 1 is a flowchart illustrating a method for resource selection in communications according to one embodiment of the present disclosure. [Figure 4A] 4 is a schematic diagram illustrating a resource candidate determination procedure according to the method of FIG. 3 according to one embodiment of the present disclosure. [Figure 4B] 4 is a table illustrating a correspondence between sub-carrier spacing (SCS) and subsets of resources according to the method of FIG. 3, in accordance with one embodiment of the present disclosure. [Figure 5] FIG. 1 is a schematic diagram illustrating dynamic co-channel coexistence of a first sidelink communication and a second sidelink communication according to an embodiment of the present disclosure. [Figure 6] FIG. 1 is a schematic diagram illustrating device types for dynamic co-channel coexistence of first and second sidelink communications according to an embodiment of the present disclosure. [Figure 7] 1 is a flowchart illustrating a method for resource suggestion in a communication according to one embodiment of the present disclosure. [Figure 8] 1 is a flowchart illustrating a method for obtaining suggestions of one or more resources in a communication according to one embodiment of the present disclosure. [Figure 9] FIG. 1 is a block diagram of a node for communication according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0014] Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings, in which like numbers in different drawings represent the same or similar elements unless otherwise noted. The implementations illustrated in the following description of exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of systems, apparatus, and methods consistent with aspects related to the present disclosure as set forth in the appended claims.

[0015] FIG. 1 is a flowchart illustrating a method 100 for resource selection in communications (referred to as the "first method" in this disclosure) according to one embodiment of the present disclosure. FIG. 2 is a schematic diagram illustrating a resource candidate determination procedure according to the first method, according to one embodiment of the present disclosure. Method 100 may be performed by a UE in sidelink communications. For example, method 100 may be performed by a vehicle in vehicle-to-everything (V2X) communications. Method 100 may be performed in a mode employing discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) for sidelink at the physical (PHY) layer (referred to as the "first mode" in this disclosure). An example of the first mode is 3GPP Release 14 / 15 Long Term Evolution (LTE) V2X PC5 Mode 4.

[0016] As shown in FIG. 2, 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 support only 15 kHz subcarrier spacing. Each subframe may be 1 ms long and include 14 DFT-s-OFDM symbols. Each subchannel may consist of multiple consecutive physical resource blocks (PRBs). Each PRB occupies 180 kHz and consists of 12 subcarriers with a 15 kHz SCS. The size of the subchannel (i.e., the number of PRBs per subchannel) may be configurable or preconfigurable. To address high Doppler caused by high relative speeds in vehicular scenarios, the density of the DMRS used for frequency offset compensation and channel estimation may be set to four per subframe. Each UE may broadcast data (e.g., TB) on the PSSCH and SCI on the PSCCH. The PSCCH may occupy two consecutive PRBs. The number of PRBs for the PSSCH may be configurable or preconfigurable. The SCI format may include information for decoding the corresponding TB in the PSSCH, facilitating autonomous resource selection by the UE. As shown in Figure 2, the resource reservation interval can be set to one of the allowed values ​​(e.g., 20, 50, 100, 200, 300...1000 ms). The PSCCH and the corresponding PSSCH may be transmitted in either adjacent or non-adjacent PRBs in the frequency domain within the same subframe.

[0017] 1, method 100 includes step 102 of performing channel sensing (e.g., background sensing or other types of either full or partial sensing). For example, as shown in FIG. 2, for resource selection, a UE may perform channel sensing within a sensing window (e.g., 1000 ms) to collect resource reservation information of other UEs. The sensing window can be of any length depending on the implementation of the UE.

[0018] 1, the method 100 includes step 104 of collecting resource reservation information and corresponding SL-RSRPs of other UEs and measuring sidelink received signal strength indicators (S-RSSIs). The UE may collect the S-RSSI and the corresponding SL-RSRP using the received sidelink signal. The UE may also measure the S-RSSI using the received sidelink signal. The UE may decode the received SCI contained in the received sidelink signal to identify candidate resources within a selection window T (e.g., T = [T1, T2], where T1 ≤ 4 ms and 20 ≤ T2 ≤ 100 ms), as shown in Figure 2. The selection of the values ​​of T1 and T2 depends on the UE implementation.

[0019] The method 100 includes step 106 of determining candidate resources by excluding occupied, reserved, and / or unmonitored resources and based on the average S-RSSI ranking. For example, as shown in FIG. 2, when resource selection or reselection is triggered, the UE may exclude some subframes from the selection window. The excluded subframes may be resources that are not monitored within the sensing window. The UE may not be able to sense these resources, for example, due to its own transmission (e.g., half-duplex constraints). The UE may further exclude resources occupied or reserved by other UEs from the selection window if the corresponding SL-RSRP exceeds a configured or pre-configured SL-RSRP exclusion threshold. After the resource exclusion, the number of candidate resources may be at least 20% of the total number of resources in the selection window. If not, the UE may increase the SL-RSRP exclusion threshold, for example, by 3 dB, until the candidate resources reach at least 20% of all resources. The UE may further calculate the corresponding S-RSSI of each subchannel resource as a linear average of the S-RSSI of the monitored resources at a regular interval (e.g., the averaging interval is 100 ms for a resource reservation interval of 100 ms or more). The UE may determine the best 20% of resources as candidate resources from all resources within the selection window, for example, based on the lowest average S-RSSI. The UE may use the 20% of resources with the lowest average S-RSSI based on S-RSSI ranking as candidate resources.

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

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

[0022] FIG. 3 is a flowchart illustrating a method 300 for resource selection in communications (referred to as the "second method" in this disclosure) according to an embodiment of the present disclosure. FIG. 4A is a schematic diagram illustrating a resource candidate determination procedure according to the second method according to an embodiment of the present disclosure. FIG. 4B is a table illustrating a correspondence between SCSs and subsets of resources according to the second method according to an embodiment of the present disclosure. Method 300 may be performed by a UE in sidelink communications. For example, method 300 may be performed by a vehicle in V2X communications. Method 300 may also be performed in a mode employing orthogonal frequency division multiplexing (OFDM) in the PHY layer of sidelink communications (referred to as the "second mode" in this disclosure). An example of the second mode is 3GPP Release 16 / 17 5G NR-V2X PC5 Mode 2.

[0023] As shown in Figure 4A, in the second mode, the time-frequency radio resource is divided into slots in the time domain and subchannels in the frequency domain. In one embodiment, the second mode is a 15 2 μ kHz SCS may be supported, where μ is the OFDM numerology μ∈{0,1,2,3,4}. For sub-6 GHz frequencies, SCSs of 15, 30, and 60 kHz (i.e., μ∈{0,1,2}) may be supported, while for frequencies above 6 GHz, SCSs of 60, 120, and 240 kHz (i.e., μ∈{2,3,4}) may be supported. Each slot is divided into 1 / 2 μ ms in length and consists of 14 OFDM symbols. Each subchannel may consist of several consecutive PRBs, each PRB being 180 2 μ occupies 15.2 kHz μ The DMRS subchannel consists of 12 subcarriers with an SCS of 1 kHz. The subchannel size (i.e., the number of PRBs per subchannel) is configurable or preconfigurable. Multiple DMRS density options (2 to 4 DMRS symbols per slot) are supported to support multiple SCSs and different Doppler spreads. Each UE may transmit first-stage SCI on the PSCCH and data (TB) and second-stage SCI on the PSSCH. HARQ feedback (e.g., acknowledgement (ACK) / negative acknowledgement (NACK), or NACK only) may be transmitted on the PSFCH.

[0024] FIG. 4B illustrates a comparison of the SCS and the sensing and selection window parameters (T SL proc,0 and T SL proc,1 For example, when the SCS is 15 kHz, as shown in the second and third columns of Figure 4B, T SL proc,0 corresponds to 1 ms, and T SL proc,1 corresponds to 3 ms. As another example, if the SCS is 30 kHz, T SLproc,0 corresponds to 0.5 ms, and T SL proc,1 corresponds to 2.5ms.

[0025] 3, the method 300 includes step 302 of performing channel sensing (e.g., background sensing or other type of sensing, either full or partial). For example, as shown in FIG. 4A, the UE may perform a sensing window T sensing (For example, T sensing =[T0,T SL proc,0 ], where T0=100 or 1100 ms, and T SL proc,0 4B) to collect resource reservation information of other UEs. Channel sensing in a 100 ms sensing window may be for aperiodic traffic, while channel sensing in an 1100 ms sensing window may be for periodic traffic.

[0026] The method 300 includes step 304 of collecting resource reservation information of other UEs and measuring corresponding SL-RSRPs. For example, as shown in FIG. 4A , the UE may perform channel sensing within a sensing window and, based on SCI decoding, collect the resource reservation information of other UEs to identify candidate resources. In one embodiment, to perform channel sensing and obtain information for receiving packets of other UEs, the UE first decodes the SCI. The SCI decoding may include two stages: a first-stage SCI (SCI format 1-A) and a second-stage SCI (SCI format 2-A or 2-B), as defined in the 3GPP specifications. The first-stage SCI may carry resource reservation information for future transmissions, information about resource allocation, an MCS for the PSSCH, a DMRS pattern, and a second-stage SCI format, etc. The second-stage SCI may carry control information for HARQ procedures, source / destination IDs, information about distance-based groupcast (e.g., a UE's zone ID and communication range requirements), etc. Based on the resource reservation information included in the first-stage SCI, Based on this, the UE may avoid using time and / or frequency resources reserved by other UEs when the UE performs resource selection or reselection.

[0027] Method 300 may support UE-to-UE cooperation, in which a first UE (UE-A) sends resource-related cooperation information to a second UE (UE-B), which then uses the information for its resource selection or reselection. In one embodiment, the UE may support a first UE-to-UE cooperation scheme. In the first UE-to-UE cooperation scheme, the UE may receive resource suggestions from other UEs that should be included or excluded from the UE's selected or reselected resources. In one embodiment, if the resource suggestions indicate inclusion of given resources, the UE may rely solely on those resources unless the suggestions support sensing and / or resource exclusion. In one embodiment, the UE may also combine the resource suggestions with resources identified by its sensing procedure before making a final selection. The UE may receive the suggestions via MAC CE and / or second-stage SCI. In one embodiment, the UE may support a second UE-to-UE cooperation scheme. In a second UE-to-UE cooperation scheme, a UE may receive an indication that a resource reserved for the UE's transmission will or may conflict with a transmission from another UE. In this case, the UE may reselect a new resource. The UE may receive the indication via the PSFCH. The UE may use a mapping table that defines a mapping rule between PSSCH assignments (slots and subchannels) and PSFCH resources. Using the mapping table, the UE (and the transmitting UE) can determine the PSSCH assignments (slots and subchannels) to which information in the PSFCH resources refers. If more than one subchannel is reserved in the PSSCH, multiple PSFCH resources may be used. The mapping table may be predefined, preconfigured in the UE, or configured by a network node.

[0028] The method 300 includes determining 306 candidate resources by filtering out occupied, reserved, and / or unmonitored resources. For example, the UE may determine 306 candidate resources within a selection window T (e.g., T=[T1, T2], where 0≦T1≦T2). SL proc,1 ms and T SL proc,1 The UE may exclude unmonitored slots from the selection window (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T20, T21, T22, T23, T24, T25, T36, T37, T48, T49, T50, T51, T52, T53, T54, T55, T56, T57, T58, T59, T60, T61, T62, T63, T64, T65, T66, T67, T68, T69, T70, T71, T72, T73, T74, T75, T76, T77, T78, T79, T80, T81, T82, T83, T84, T85, T86, T87, T88, T89, T90, T91, T92, T93, T94, T95, T96, T97, T98, T99, T91, T91, T92, T93, T94, T95, T96, T97, T98, T99, T99, T99, T100, T111, T121, T132, T142, T153, T164, T175, T186, T190, T191, T192, T193, T194, T205, T216, T226, T232, T247, T254, T265, T376, T48, T49, T50, T195, T216, T227, T232, T3

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

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

[0031] The method 300 includes determining 312 whether resource reselection is required. If it is determined that resource reselection is required, the method may repeat from step 304. However, if it is determined that resource reselection is not required, the method may proceed to step 314, where the UE transmits a packet based on the SPS or OST. The packet may be an initial packet or a retransmitted packet. The UE may 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] One embodiment of the present disclosure is directed to resource selection or reselection for co-channel coexistence of two or more sidelink communications (e.g., the sidelink communications described in connection with FIGS. 1-2 and the sidelink communications described in connection with FIGS. 3-4B).

[0033] FIG. 5 is a schematic diagram illustrating dynamic co-channel coexistence between a first sidelink (SL) communication and a second sidelink (SL) communication according to an embodiment 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. As shown in FIG. 5, the first sidelink communication and the second sidelink communication share time and / or frequency resources. However, the methods described in this disclosure are not limited thereto. The methods described in this disclosure may be applied to any sidelink communication, such as future generation (sixth generation (6G), seventh generation (7G), or any future generation) sidelink communication. Furthermore, the methods described in this disclosure may also be applied to downlink / uplink communication between a base station and a UE.

[0034] FIG. 6 is a schematic diagram illustrating device types for dynamic co-channel coexistence of first and second sidelink (SL) communications according to one embodiment of the present disclosure. With reference to FIG. 6, at least three types of devices (Type A, Type B, and Type C) are considered in this disclosure. A Type A device includes a module for the first sidelink communication and a module for the second sidelink communication. A Type B device includes only a module for the first sidelink communication. A Type C device includes only a module for the second sidelink communication. For example, in one embodiment, a Type A device includes both LTE SL and NR SL modules, a Type B device includes only an NR SL module, and a Type C device includes only an LTE SL module.

[0035] Sometimes, sidelink resources selected by one UE may partially or completely overlap with those selected by another UE. If the overlap is severe (complete overlap), one of the two UEs may need to surrender its selected resource or exclude resources from selection. However, if the overlap is minor or negligible, the two UEs may not need to exclude or surrender resources. At least one embodiment of the present disclosure provides a flexible and easy way to indicate the level of overlap, allowing the UE to accurately determine whether to exclude / surrender resources, thereby efficiently mitigating contention during resource selection and saving radio resources.

[0036] 7 is a flowchart illustrating a method 700 for resource suggestion in a communication (e.g., a sidelink communication) according to one embodiment of the present disclosure. The method 700 may be performed by a node in the 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 of determining an overlap between a first resource reserved by a first node and a second resource reserved by a 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 and second nodes. In one embodiment, at least one of the first node or the second node is a UE in 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 another 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 within a sensing window (e.g., 100 or 1100 ms) to obtain information about the first resource reserved by the first node. Alternatively or additionally, the second node may use UE-to-UE coordination information to transmit information about the first resource from one or more other UEs 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 one or more 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 one or more 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 are of the same radio access technology (RAT). The first resource may be a resource for a different RAT (access technology) or may be a resource for a different RAT. For example, in one embodiment, the first resource may be a resource for NR sidelink communications and the second resource may be a resource for LTE sidelink communications.

[0040] The method 700 includes transmitting 704 one or more suggestions indicating an overlap between the first resource and the second resource. The one or more suggestions may be transmitted to the first node or a third node different from the first and second nodes. For example, the second node or the third node may determine an overlap between the first resource and the second resource and transmit one or more suggestions 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 PSFCH, PSSCH, PSCCH, or MAC The CE may be transmitted via at least one of the CEs.

[0042] In one embodiment, the one or more suggestions are sent internally within the first node. For example, the first node may be a Type-A UE, as shown in Figure 6, and thus may include a first module for the first sidelink communication and a second module for the second sidelink communication. The first module of the first node may determine an overlap between the first and second resources and send the one or more suggestions 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 suggestions may include suggestions 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 that the first RAT and the second RAT are different from each other.

[0045] In some embodiments, the one or more suggestions may include multiple suggestions. In these embodiments, method 700 may further include configuring or pre-configuring the multiple suggestions based on a level of overlap. The level of overlap may be indicated as a percentage of overlap. Each of the multiple suggestions may correspond 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 the time domain and the frequency domain. For example, in some embodiments, the one or more suggestions are PSFCH feedback, and the number of suggestions indicating the percentage of overlap may be configured or pre-configured. For example, as shown in Table 1 below, if there is 0% to 10% resource overlap, the PSFCH feedback may be sent using suggestion 1; if there is 10% to 80% resource overlap, the PSFCH feedback may be sent using suggestion 2; and if there is 80% to 100% resource overlap, the PSFCH feedback may be sent using suggestion 3.

[0046] [Table 1]

[0047] In one embodiment, the one or more indications may include at least one of an indication of overlap of at least a portion of a reserved channel, an indication of overlap of at least a portion of a reserved subchannel, an indication of overlap of at least a portion of a reserved frame, an indication of overlap of at least a portion of a reserved subframe, or an indication of overlap of at least a portion of a reserved slot. For example, in one embodiment, the one or more indications may include information about which portions of resources overlap, such as the “top,” “bottom,” and / or “middle” portions of reserved consecutive subchannels and / or the “before,” “after,” and / or “middle” portions of reserved slots (or subframes).

[0048] In one embodiment, the one or more suggestions may include multiple suggestions, including a first suggestion and a second suggestion, where the first suggestion may indicate a higher level of resource overlap than the second suggestion, in which case the first node may receive the first suggestion N1 times or the first suggestion N2 times. When the node receives the second suggestion N2 times, at least a portion of the first resource is surrendered or excluded, where N1 and N2 are integers, and N1 is less than N2. N1 and N2 can be configured by the network or preconfigured in the first node.

[0049] In one embodiment, the one or more suggestions may include multiple suggestions, each of which is 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 resource overlaps corresponding to the suggestion with the highest priority.

[0050] FIG. 8 is a flow chart illustrating a method 800 for obtaining suggestions of one or more resources in a communication according to one embodiment of the present disclosure.

[0051] The method 800 includes step 802 in which a first node reserves first resources for communication. 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 sidelink communication, determine one or more candidate resources through channel sensing, and select one or more resources for transmission or reception from the candidate resources. Alternatively or additionally, the first node may use UE-to-UE coordination information to transmit information about the first resources to be reserved from one or more other nodes to the first node. The first resources reserved by the first node may be one or more resources in the time domain and / or the frequency domain. For example, the first resources may include at least one of one or more 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 in which a first node receives 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 sidelink communication. The first node may receive the one or more indications from the 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 and second nodes.

[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 one or more 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 receive the one or more indications internally, for example from an internal module, indicating an overlap between the reserved first resources and the second resources reserved by the second UE, and in one embodiment, the one or more indications are also transmitted to a third node distinct from the first and second nodes.

[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 of the same RAT. For example, the first resource and the second resource are resources for NR sidelink communication or LTE sidelink communication. It may be sidelink communication.

[0056] In one embodiment, the first resources may be resources for a first RAT, the second resources may be resources for a second RAT different from the first RAT, and the one or more indications may include an indication that the first RAT and the second RAT are different from each other. For example, the first resources may be resources for NR sidelink communications, and the second resources may be resources for LTE sidelink communications.

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

[0058] In one embodiment, the one or more suggestions may include a plurality of suggestions, each of which corresponds 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 portions of overlap in the time domain and the frequency domain.

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

[0060] The method 800 includes a step 806 in which the first node performs an adjustment based on the one or more suggestions to mitigate the impact of the overlap. For example, upon receiving the one or more suggestions, the first node may perform an adjustment depending on the level of overlap. In one embodiment, performing an adjustment based on the one or more suggestions 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 an MCS for the first node, changing a transmit 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 suggestions may include determining whether to vacate or exclude at least a portion of the first resource based on the one or more suggestions. For example, 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) if a percentage of overlap in the frequency domain and / or the time domain exceeds a threshold. The threshold may be configured or preset.

[0062] In one embodiment, the one or more suggestions may include a plurality of suggestions, including a first suggestion and a second suggestion, the first suggestion indicating a higher level of overlap than the second suggestion, and at least a portion of the first resource is allocated when the first UE receives the first suggestion N1 times; or If the first UE receives the second suggestion N2 times, it will yield or be excluded, where N1 and N2 are integers, and N1 is less than N2. N1 and N2 may be configured by the network or pre-configured in the first UE.

[0063] In one embodiment, the one or more suggestions may include a plurality of suggestions, and performing the adjustment based on the one or more suggestions may include changing an MCS for the first node based on the plurality of suggestions. The MCS may correspond to at least one of a type or number of the one or more suggestions. In this embodiment, a set of MCSs, each corresponding to a respective one of the plurality of suggestions, may be configured or pre-configured.

[0064] In one embodiment, when performing the adjustment based on the one or more suggestions, the first UE may consider the priority (e.g., PPPP used in LTE or priority level / PC5 ​​PQI used in NR) or the relative priority of the transmission scheduled to use the first resource. For example, the first UE may not yield or exclude a resource if the associated transmission is of higher priority (more important) than the priority of the overlapping transmission. In one embodiment, the priority or relative priority may be used in combination with other embodiments of the present disclosure. For example, a mapping rule may be created by combining the priority and the underlying RAT. The mapping rule may take information about the same RAT (or non-same RAT) and the relative priority of the potential transmission as input to determine whether to yield / exclude a resource. In one embodiment, the first UE only considers PSSCH overlap.

[0065] In one embodiment, when performing the adjustment based on the one or more suggestions, the first UE considers the one or more suggestions only if the distance between the first node and the device for which the overlap is determined is less than a threshold distance, which may be predefined, preset, or configured.

[0066] In one embodiment, performing the adjustment based on the one or more suggestions includes altering a transmit power of the first node based on the suggestions, e.g., the first UE using a reduced transmit power for lower priority transmissions and an increased transmit power for higher priority transmissions.

[0067] In one embodiment, the one or more suggestions may include multiple suggestions transmitted simultaneously from a single node. In one embodiment, the one or more suggestions may include multiple suggestions transmitted at different times from a single node. In one embodiment, the one or more suggestions may include multiple suggestions transmitted from multiple different nodes. In these embodiments, method 800 may further include aggregating the multiple suggestions in at least one of the time domain or frequency domain to generate at least one of a time domain aggregation or a frequency domain aggregation. For example, the multiple suggestions may be aggregated based on content, source (e.g., from the same node), time of transmission, type (time domain resource or frequency domain resource), etc. Method 800 may further include 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. The time domain threshold and the frequency domain threshold may be configured or pre-configured. The method 800 may further include vacating or excluding at least one resource in the time domain or frequency domain 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 a time domain threshold or a frequency domain threshold.

[0068] In one embodiment, depending on the type and / or number of received suggestions and / or the amount of overlap, the first UE may continue to use the reserved resources, but with a reduced transmit power to limit interference to the overlapping resources. The first UE may employ this adjustment for lower priority transmissions.

[0069] In one embodiment, the first UE may continue to use the reserved resources, but with increased transmit power to overcome the interference caused by the overlapping resources, and the first UE may employ this adjustment for high priority transmissions.

[0070] In one embodiment, the power decrement or increment depends on the level of resource overlap. The power decrement or increment may be configured or pre-configured. The power decrement or increment may also be associated with the priority of the transmission.

[0071] In one embodiment, depending on the type and / or number of suggestions received, the first node may perform retransmissions using alternative resource reservations. In one embodiment, depending on the type and / or number of suggestions received, the first node may decide to change the frequency and / or time placement of its second stage SCI if it is indicated to be overlapping.

[0072] In one embodiment, the first node may consider overlapping resources from different RATs if it is less harmful than overlapping resources from the same RAT, and the first node may make different adjustments for these two cases. For example, in one embodiment, the first node may vacate or exclude resources when an overlap indication is received for a potential transmission in the same RAT, and may not vacate or exclude resources otherwise. In other embodiments, the first node may accept more overlap (in terms of overlap percentage and / or number of indications) within different RATs before deciding to vacate or exclude resources. In one embodiment, a set of possible frequency and / or time arrangements for the second stage SCI in the case of overlap is configured or pre-configured, so that the first node can perform blind decoding of the second stage SCI. In one embodiment, the modified frequency and / or time arrangements for the second stage SCI are suggested by the first stage SCI.

[0073] In one embodiment, a cyclic shift may be applied to the signal transmitted on the PSFCH resource element (or actual PSFCH resource element selection) to indicate whether the overlap is an intra-RAT or inter-RAT overlap of resources. In one embodiment, 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 one embodiment, if a PSFCH is used to carry the one or more suggestions, the suggestions are spread across multiple PSFCH resources so that the suggestions can be carried without introducing a new PSFCH format, e.g., the PSFCH resource from slot n in subchannel x is used for bit 0, the PSFCH resource from slot n in subchannel x+1 is used for bit 1, etc.

[0075] In one embodiment, the suggestion may depend on the portion of the allocated resources, e.g., the portion of allocated subchannels or the portion of allocated consecutive subchannels, e.g., if resource allocation is possible for up to three subchannels, the suggestion may indicate one, two, or three subchannels.

[0076] In one embodiment, the resource allocation uses two or more subchannels and the one or more suggestions are provided only on PSFCH resources mapped from the competing subchannels. In one embodiment, more than two types of triggers may be used.

[0077] In one embodiment, the overlap associated with triggering a suggestion may be based on potential transmission resources (1) between resources of the node triggering the suggestion and resources of the node receiving the suggestion, and / or (2) between resources of the node triggering the suggestion and resources of a third node (UE or network), and / or (3) between resources of two other nodes (e.g., UE or network) other than the nodes transmitting and receiving the suggestion. In one embodiment, these three cases above may lead to different behavior of the receiving node (e.g., with respect to the type and / or number of suggestions received) and / or may be combined.

[0078] In one embodiment, the first node is a Type-B UE in sidelink communication and receives multi-level indications from a Type-A UE via the PSFCH, which may be extended to indicate two or more indications.

[0079] In one embodiment, 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., the first node vacates, then does not vacate, then vacates, etc.). In one embodiment, the first node may vacate or exclude the first resource based on a random probability. The random probability may depend on the type of suggestion and / or the number of suggestions received.

[0080] In one embodiment, the type or number of the one or more suggestions may be varied based on the distance between the first node and the node sending the one or more suggestions. In one embodiment, the distance between the first node and a third node may be considered. In one embodiment, the distance between the third node and a fourth node may be considered. In one embodiment, the first node may use the received one or more suggestions along with its own resource reservation to decide whether to vacate or exclude the first resource.

[0081] The parameters referred to in this disclosure (e.g., numbers N1, N2, distance threshold) can be provided to the first node via configuration or pre-configuration. For example, the parameters may be provided to the first node by a base station (e.g., gNB) via a radio resource control (RRC) message when the first node is within the coverage of the network node. Alternatively or additionally, the parameters may be provided to the first node via a network configuration, such as a subscriber identity module (SIM) / universal subscriber identity module (USIM) toolkit from a home public land mobile network (PLMN).

[0082] An embodiment of the present disclosure may include 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 this disclosure may be used for future 3GPP V2X technologies that use similar resource selection mechanisms (e.g., 6G V2X).

[0083] 9 is a block diagram of a node 900 for communication according to one embodiment of the present disclosure. For example, the node 900 may be a Type A UE, a Type B UE, or a Type B UE, as shown in FIG. or a UE, such as a Type-C UE. Node 900 may also be a base station, a roadside unit, a relay node, or a mobile device. Node 900 may be mounted on a moving vehicle or at a fixed location. Node 900 may take any form, including, but not limited to, a vehicle, a vehicle-mounted component, a roadside unit, a computer system, a laptop computer, a wireless terminal including a mobile phone, a wireless handheld device, a wireless personal device, or any other form. Referring to FIG. 9 , node 900 may include an antenna 902 that may be used for transmitting or receiving electromagnetic signals to or from a base station or a UE. 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 one embodiment, antenna 902 may include multiple (e.g., tens or hundreds) antenna elements and may enable multi-antenna functions such as beamforming. In one embodiment, antenna 902 is a single antenna.

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

[0085] The node 900 may include memory 906. The 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 a general-purpose or special-purpose computer. Examples of non-transitory storage media include, but are not limited to, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable ROM (EEPROM), digital versatile disks (DVDs), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, and the like. The non-transitory medium may be used to carry or store desired program code means (e.g., instructions and / or data structures) and may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. In some examples, the software / program code may be transmitted from a remote source (e.g., a website, a server, etc.) using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave. In such examples, coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are within the definition of media. Combinations of the above examples are also within the scope of computer-readable media.

[0086] The memory 906 may store information related to the identities of the node 900 and 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 further store computer-readable program instructions executed by the processor 908 for controlling the operation of the node 900. In one embodiment, the memory 906 may include a basic input / output system (BIOS) that may control basic hardware or software operations, such as interacting with peripheral components or devices. In one embodiment, the node 900 is a Type-A UE, as shown in FIG. 6, and the memory 906 may store a first SL module (e.g., an NR SL module) and a second SL module (e.g., an LTE SL module). 9. In one embodiment, UE 900 is a Type-B UE, as shown in FIG. 6, and memory 906 includes only an NR SL module. In one embodiment, UE 900 is a Type-C UE, as shown in FIG. 6, and memory 906 includes only an LTE SL module. As mentioned above, in one embodiment, 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 may be assembler instructions, instruction set architecture (ISA) instructions, machine language instructions, machine-dependent 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 conventional procedural programming languages. The computer-readable program instructions may be executed entirely on a computing device as a standalone software package, or may be executed partially on a first computing device and partially on a second computing device remote from the first computing device. In the latter scenario, the second, remote computing device may be connected to the first computing device through any type of network, including a local area network (LAN) or a wide area network (WAN).

[0088] The node 900 may include a processor 908, which may include a hardware device having processing capabilities. The 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 device. Examples of a general-purpose processor include, but are not limited to, a microprocessor, any conventional processor, controller, microcontroller, or state machine. In one embodiment, the processor 908 may be implemented using a combination of devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration). The processor 908 may receive downlink or sidelink signals from the transceiver 904 and further process the signals. The processor 908 may also receive data packets from the transceiver 904 and further process the packets. In one embodiment, the processor 908 may be configured to operate the memory using a memory controller. In one embodiment, the memory controller may be integrated into the processor 908. The processor 908 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 906) to cause the UE 900 to perform various functions.

[0089] The node 900 may include a global positioning system (GPS) 910. The GPS 910 may be used to enable location-based services or other services based on the geographic location of the node 900 and / or synchronization between UEs. The GPS 910 receives Global Navigation Satellite System (GNSS) signals from a single satellite or multiple satellites via an antenna 902. satellite signals of the node 900 and provide the geolocation of the node 900 (e.g., the coordinates of the node 900). In one embodiment, the GPS 910 may be omitted.

[0090] The node 900 may include input / output (I / O) devices 912 that may be used to communicate the results of signal processing and computations to a user or other devices. The I / O devices 912 may include a user interface, including a display and input devices for sending user commands to the processor 908. The display may be configured to display the status of signal reception at the UE 900, data stored in the memory 906, the status of signal processing, and the results of computations. 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 gas plasma display, a touchscreen, or other image projection devices for displaying information to a user. The input devices may be any type of computer hardware equipment used to receive data and control signals from a user. The input devices may include, but are not limited to, a keyboard, a mouse, a scanner, a digital camera, a joystick, a trackball, cursor direction keys, a touchscreen monitor, or an audio / video commander.

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

[0092] In one embodiment, node 900 may be configured or programmed to provide one or more resource suggestions. For example, 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 to transmit one or more suggestions indicating the overlap between the first resource and the second resource.

[0093] In one embodiment, node 900 may be configured or programmed to obtain resource suggestions for communication. For example, node 900 may be configured or programmed to reserve first resources for communication, receive one or more suggestions indicating an overlap between the reserved first resources and a second resource reserved by a second node, and perform adjustments based on the one or more suggestions to mitigate an effect 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 preceded by phrases such as "at least one of" or "one or more of." 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). Also, as used in this disclosure, the phrase "based on" preceding a list of conditions should not be interpreted as "based only on" the set of conditions, but rather as "based at least in part on" the 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] As used herein, the terms "comprise," "include," or "contain" are used interchangeably, may have the same meaning, and should be construed as inclusive and open-ended. , may be used before a list of elements to indicate that at least all of the elements listed in the list are present, but that other elements not in the list are also present. For example, if A comprises B and C, then both {B,C} and {B,C,D} are within the scope of A.

[0096] The present disclosure, in connection with the accompanying drawings, describes exemplary configurations that do not represent all possible implementations or all configurations within the scope of the present disclosure. The term "exemplary" should not be interpreted as "preferred" or "advantageous over other examples," but rather as "illustration, instance, or example." By reading this disclosure, including the description of the embodiments and the drawings, those skilled in the art will understand that the technology disclosed herein may be implemented using alternative embodiments. Those skilled in the art will understand that the embodiments described herein, or specific features of the embodiments, may be combined to arrive at still other embodiments for practicing the technology described in the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0097] The flowcharts and block diagrams in the figures illustrate example architecture, functionality, and operation of possible implementations of systems, methods, and devices according to various embodiments. It should be noted that in some alternative implementations, the functions noted in the blocks may occur out of the order depicted. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may be executed in the reverse order, depending on the functionality involved. Likewise, in methods according to various embodiments, additional steps may be included in such methods, or certain steps may be omitted or combined.

[0098] It is understood that the described embodiments are not mutually exclusive, and that elements, components, materials, or steps described in connection with one exemplary embodiment may be combined with, or excluded from, other embodiments in any suitable manner to achieve desired design objectives.

[0099] References herein to "some embodiments" or "some exemplary embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment. The appearances of the phrases "one embodiment," "some embodiments," or "another embodiment" in various places in this disclosure do not necessarily refer to the same embodiment, nor are separate or alternative embodiments necessarily mutually exclusive of other embodiments.

[0100] Furthermore, the articles "a" and "an," as used in this disclosure and the appended claims, should be construed to mean "one or more" unless otherwise specified or unless it is clear from the context that the singular form is intended.

[0101] Unless expressly stated otherwise, each numerical value and range should be interpreted as an approximation, as when the value or range is preceded by the word "about" or "approximately."

[0102] Elements in the following method claims, if any, are recited in a particular order, but the claim recitation does not otherwise suggest a particular order for performing some or all of those elements. Unless otherwise stated, the elements are not necessarily intended to be limited to being performed in that particular order.

[0103] It is understood that certain features of the present disclosure, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features herein that are, for brevity, described in the context of a single embodiment, may also be suitably provided separately or in any suitable subcombination or with any other described embodiment herein. Certain features described in the context of various embodiments are not essential features of those embodiments, unless expressly stated otherwise.

[0104] It will be further understood that various changes, substitutions, and variations in the details, materials, and arrangements of parts described and illustrated to explain the nature of the described embodiments may be made by those skilled in the art without departing from the scope thereof, and therefore the following claims will encompass all such alternatives, modifications, and variations that fall within the scope of the claims.

[0105] Appendix 1 1. A method for providing resource suggestions 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; transmitting one or more indications indicating the overlap between the first resource and the second resource; Including, method.

[0106] Appendix 2 At least one of the first node or the second node is a user equipment (UE) in sidelink communication. Method in Appendix 1.

[0107] Appendix 3 2. The method of claim 1, wherein at least one of the first node or the second node is a base station.

[0108] Appendix 4 The first node is a UE and the second node is a base station; Method in Appendix 1.

[0109] Appendix 5 the one or more suggestions are transmitted to the first node or to a third node distinct from the first and second nodes; Method in Appendix 1.

[0110] Appendix 6 the overlap between the first resource and the second resource is determined by at least one of the second node or a third node distinct from the first and second nodes; Method in Appendix 1.

[0111] Appendix 7 a first node comprising a first module for a first sidelink communication and a second module for a second sidelink communication, wherein 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; Method in Appendix 1.

[0112] Appendix 8 the one or more indications are transmitted via 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). Method in Appendix 1.

[0113] Appendix 9 the first resource and the second resource are resources for the same radio access technology (RAT), and the one or more indications further include an indication of the same RAT; Method in Appendix 1.

[0114] Appendix 10 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 further include an indication that the first RAT and the second RAT are different from each other; Method in Appendix 1.

[0115] Appendix 11 The first RAT is New Radio (NR) and the second RAT is Long Term Evolution (LTE); Method in Appendix 10.

[0116] Appendix 12 the one or more suggestions includes a plurality of suggestions; each of the plurality of suggestions corresponds to at least one of a percentage of the overlap in a time domain, a percentage of the overlap in a frequency domain, or a percentage of the overlap in the time domain and the frequency domain; Method in Appendix 1.

[0117] Appendix 13 each of the first resources and the second resources includes at least one of one or more slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks; Method in Appendix 1.

[0118] Appendix 14 the one or more indications include at least one of an indication of overlap of at least a portion of a reserved channel, an indication of overlap of at least a portion of a reserved subchannel, an indication of overlap of at least a portion of a reserved frame, an indication of overlap of at least a portion of a reserved subframe, or an indication of overlap of at least a portion of a reserved slot; Method in Appendix 1.

[0119] Appendix 15 the one or more suggestions include a plurality of suggestions including a first suggestion and a second suggestion, the first suggestion suggesting a higher level of overlap than the second suggestion, and at least a portion of the first resource is to be yielded or removed when the first node receives the first suggestion N1 times or when the first node receives the second suggestion N2 times, N1 and N2 being integers, and N1 being less than N2; Method in Appendix 1.

[0120] Appendix 16 N1 and N2 are configured by the network or pre-configured in the first node; Method in Appendix 15.

[0121] Appendix 17 the one or more suggestions include multiple suggestions, each of which is assigned a priority or relative priority; Method in Appendix 1.

[0122] Appendix 18 1. A method for obtaining an indication of one or more resources in a communication, comprising: The first node reserving a first resource for communication; receiving the one or more indications indicating an overlap between the first resource reserved and a second resource reserved by a second node; performing adjustments based on the one or more suggestions to mitigate the effect of the overlap; and Including, method.

[0123] Appendix 19 performing the adjustment based on the one or more suggestions includes: determining whether to vacate at least a portion of the reserved first resource; determining whether to exclude at least a portion of the resources from the selection; changing a modulation and coding scheme (MCS) for the first node; changing the transmit power for the first node; or performing retransmissions using alternative resource reservations; including at least one of Appendix 18 method.

[0124] Appendix 20 At least one of the first node or the second node is a UE in sidelink communication. Appendix 18 method.

[0125] Appendix 21 19. The method of claim 18, wherein at least one of the first node or the second node is a base station.

[0126] Appendix 22 The first node is a UE and the second node is a base station; Appendix 18 method.

[0127] Appendix 23 the one or more suggestions are transmitted to the first node or to a third node distinct from the first and second nodes; Appendix 18 method.

[0128] Appendix 24 the one or more suggestions are received from at least one of the first node, the second node, or a third node; Appendix 18 method.

[0129] Appendix 25 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; Appendix 24 method.

[0130] Appendix 26 the one or more indications are received via 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). Appendix 18 method.

[0131] Appendix 27 the first resource and the second resource are resources for the same radio access technology (RAT), and the one or more indications further include an indication of the same RAT; Appendix 18 method.

[0132] Appendix 28 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 further include an indication that the first RAT and the second RAT are different from each other; Appendix 18 method.

[0133] Appendix 29 The first RAT is New Radio (NR) and the second RAT is Long Term Evolution (LTE); Appendix 28 method.

[0134] Appendix 30 the one or more suggestions include a plurality of suggestions, each of the plurality of suggestions corresponding to at least one of a percentage of the overlap in a time domain, a percentage of the overlap in a frequency domain, or a percentage of the portion of the overlap in the time domain and the frequency domain; Appendix 18 method.

[0135] Appendix 31 each of the first resources and the second resources includes at least one of one or more slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks; Appendix 18 method.

[0136] Appendix 32 the one or more indications include at least one of an indication of overlap of at least a portion of a reserved channel, an indication of overlap of at least a portion of a reserved subchannel, an indication of overlap of at least a portion of a reserved frame, an indication of overlap of at least a portion of a reserved subframe, or an indication of overlap of at least a portion of a reserved slot; Appendix 18 method.

[0137] Appendix 33 the one or more suggestions include a plurality of suggestions including a first suggestion and a second suggestion, the first suggestion indicating a higher level of overlap than the second suggestion, and at least a portion of the first resource is yielded or removed when the first node receives the first suggestion N1 times or when the first node receives the second suggestion N2 times, N1 and N2 being integers, and N1 being less than N2; Appendix 18 method.

[0138] Appendix 34 N1 and N2 are configured by the network or pre-configured in the first node; Method of Appendix 33.

[0139] Appendix 35 the one or more suggestions include a plurality of suggestions, and performing the adjustment based on the one or more suggestions includes modifying the MCS for the first node based on the plurality of suggestions; the MCS corresponds to at least one of the types or numbers of the one or more suggestions; Appendix 19 method.

[0140] Appendix 36 and further including considering a priority or relative priority of a transmission scheduled to use the first resource. Appendix 18 method.

[0141] Appendix 37 considering the one or more suggestions if a distance between the first node and the device for which the overlap is determined is less than a threshold distance; further comprising: Appendix 18 method.

[0142] Appendix 38 performing the adjustment based on the one or more suggestions includes altering the transmit power of the first node based on the plurality of suggestions; The reduced transmit power is used for transmissions having a lower priority and the increased transmit power is used for transmissions having a higher priority. Appendix 19 method.

[0143] Appendix 39 The one or more suggestions may include multiple suggestions sent from a single device at the same time or at different times; Appendix 18 method.

[0144] Appendix 40 the one or more suggestions include a plurality of suggestions transmitted from a plurality of different devices; Appendix 18 method.

[0145] Appendix 41 The one or more suggestions include a plurality of suggestions, and the method includes: aggregating the plurality of suggestions in at least one of a time domain or a frequency domain 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 set or preset time domain threshold or frequency domain threshold; surrendering or excluding at least one resource in the time domain or the frequency domain in response to determining that the percentage of the 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; further comprising: Appendix 18 method.

[0146] Appendix 42 1. An apparatus for providing one or more resource suggestions, comprising: a memory for storing instructions; Execute the instructions stored in the memory, determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; transmitting the one or more indications indicating the overlap between the first resource and the second resource; a processor that executes Equipped with Device.

[0147] Appendix 43 At least one of the first node or the second node is a user equipment (UE) in sidelink communication. The device of Appendix 42.

[0148] Appendix 44 43. The apparatus of claim 42, wherein at least one of the first node or the second node is a base station.

[0149] Appendix 45 The first node is a UE and the second node is a base station; The device of Appendix 42.

[0150] Appendix 46 the device is the first node, the second node, or a third node different from the first and second nodes; The device in Appendix 42.

[0151] Appendix 47 the one or more suggestions are transmitted to the first node or to a third node distinct from the first and second nodes; The device in Appendix 42.

[0152] Appendix 48 the apparatus is the first node, the first node comprising a first module for a first sidelink communication and a second module for a second sidelink communication, the overlap between the first resource and the second resource being determined by the first module of the first node and sent to the second module of the first node. Apparatus of Appendix 46.

[0153] Appendix 49 the one or more indications are transmitted via 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). The device in Appendix 42.

[0154] Appendix 50 the first resource and the second resource are resources for the same radio access technology (RAT), and the one or more indications further include an indication of the same RAT; The device in Appendix 42.

[0155] Appendix 51 43. The apparatus of Claim 42, wherein the first resources are resources for a first RAT and the second resources are resources for a second RAT different from the first RAT, and the one or more indications further include an indication that the first RAT and the second RAT are different from one another.

[0156] Appendix 52 The first RAT is New Radio (NR) and the second RAT is Long Term Evolution (LTE); The device of Appendix 51.

[0157] Appendix 53 the one or more suggestions include a plurality of suggestions, each of the plurality of suggestions corresponding to at least one of a percentage of the overlap in a time domain, a percentage of the overlap in a frequency domain, or a percentage of the overlap in the time domain and the frequency domain; The device in Appendix 42.

[0158] Appendix 54 each of the first resources and the second resources comprises at least one of one or more slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks; The device in Appendix 42.

[0159] Appendix 55 the one or more indications comprise at least one of an indication of overlap of at least a portion of a reserved channel, an indication of overlap of at least a portion of a reserved subchannel, an indication of overlap of at least a portion of a reserved frame, an indication of overlap of at least a portion of a reserved subframe, or an indication of overlap of at least a portion of a reserved slot. The device in Appendix 42.

[0160] Appendix 56 the one or more suggestions comprise a plurality of suggestions including a first suggestion and a second suggestion, the first suggestion indicating a higher level of overlap than the second suggestion, and at least a portion of the first resource is yielded or removed when the first node receives the first suggestion N1 times or when the first node receives the second suggestion N2 times, N1 and N2 being integers, and N1 being less than N2; The device in Appendix 42.

[0161] Appendix 57 N1 and N2 are configured by the network or pre-configured in the first node; The device of Appendix 56.

[0162] Appendix 58 the one or more suggestions include multiple suggestions, each of which is assigned a priority or relative priority; The device in Appendix 42.

[0163] Appendix 59 a first node for obtaining resource indications in a communication, a memory for storing instructions; Execute the instructions stored in the memory, reserving first resources for the communication; receiving one or more indications of an overlap between the reserved first resource and a second resource reserved by a second node; performing adjustments based on the one or more suggestions to mitigate the effect of the overlap; and a processor that executes Equipped with The first node.

[0164] Appendix 60 performing the adjustment based on the one or more suggestions includes: determining whether to vacate at least a portion of the reserved first resource; determining whether to exclude at least a portion of the resources from the selection; changing a modulation and coding scheme (MCS) for the first node; changing the transmit power for the first node; or performing retransmissions using alternative resource reservations; including at least one of The first node of Appendix 59.

[0165] Appendix 61 At least one of the first node or the second node is a UE in sidelink communication. The first node of Appendix 59.

[0166] Appendix 62 60. The first node of claim 59, wherein at least one of the first node or the second node is a base station.

[0167] Appendix 63 The first node is a UE and the second node is a base station; The first node of Appendix 59.

[0168] Appendix 64 the one or more suggestions are received from at least one of the second node or a third node distinct from the first and second nodes; The first node of Appendix 59.

[0169] Appendix 65 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; The first node of Appendix 64.

[0170] Appendix 66 the one or more indications are received via 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). The first node of Appendix 59.

[0171] Appendix 67 the first resource and the second resource are resources for the same radio access technology (RAT), and the one or more indications further include an indication of the same RAT; The first node of Appendix 59.

[0172] Appendix 68 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 further include an indication that the first RAT and the second RAT are different from each other; The first node of Appendix 59.

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

[0174] Appendix 70 the one or more suggestions include a plurality of suggestions, each of the plurality of suggestions corresponding to at least one of a percentage of the overlap in a time domain, a percentage of the overlap in a frequency domain, or a percentage of the overlap in the time domain and the frequency domain; The first node of Appendix 59.

[0175] Appendix 71 each of the first resources and the second resources comprises at least one of one or more slots, one or more subframes, one or more frames, one or more subchannels, one or more channels, or one or more resource blocks; The first node of Appendix 59.

[0176] Appendix 72 the one or more indications comprise at least one of an indication of overlap of at least a portion of a reserved channel, an indication of overlap of at least a portion of a reserved subchannel, an indication of overlap of at least a portion of a reserved frame, an indication of overlap of at least a portion of a reserved subframe, or an indication of overlap of at least a portion of a reserved slot. The first node of Appendix 59.

[0177] Appendix 73 the one or more suggestions include a plurality of suggestions including a first suggestion and a second suggestion, the first suggestion indicating a higher level of overlap than the second suggestion, and at least a portion of the first resource is yielded or removed when the first node receives the first suggestion N1 times or when the first node receives the second suggestion N2 times, N1 and N2 being integers, and N1 being less than N2; The first node of Appendix 59.

[0178] Appendix 74 N1 and N2 are configured by the network or pre-configured in the first node; The first node of Appendix 73.

[0179] Appendix 75 the one or more suggestions include a plurality of suggestions, and performing the adjustment based on the one or more suggestions includes modifying the MCS for the first node based on the plurality of suggestions; the MCS corresponds to at least one of the type or number of the one or more suggestions; The first node of Appendix 60.

[0180] Appendix 76 The processor executes the instructions stored in the memory to the priority or relative priority of the transmission scheduled to use said first resource; Considering priorities, Further implementation of The first node of Appendix 59.

[0181] Appendix 77 The processor executes the instructions stored in the memory to considering the one or more suggestions if a distance between the first node and the device for which the overlap is determined is less than a threshold distance; Further implementation of The first node of Appendix 59.

[0182] Appendix 78 performing the adjustment based on the one or more suggestions includes altering the transmit power for the first node based on the plurality of suggestions; The reduced transmit power is used for transmissions having a lower priority and the increased transmit power is used for transmissions having a higher priority. The first node of Appendix 60.

[0183] Appendix 79 The one or more suggestions may include multiple suggestions sent from a single device at the same time or at different times; The first node of Appendix 59.

[0184] Appendix 80 the one or more suggestions include a plurality of suggestions transmitted from a plurality of different devices; The first node of Appendix 59.

[0185] Appendix 81 The one or more suggestions include a plurality of suggestions, and the processor executes the instructions stored in the memory to aggregating the plurality of suggestions in at least one of a time domain or a frequency domain 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 set or preset time domain threshold or frequency domain threshold; surrendering or excluding at least one resource in the time domain or the frequency domain in response to determining that the percentage of the 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; Further implementation of The first node of Appendix 59.

[0186] Appendix 82 1. A non-transitory computer-readable medium storing instructions executable by one or more processors of a communications device for performing a method, the method comprising: determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; transmitting one or more indications indicating the overlap between the first resource and the second resource; Including, Non-transitory computer-readable medium.

[0187] Appendix 83 1. A non-transitory computer-readable medium storing instructions executable by one or more processors of a first node for communicating with a communication system for performing a method, the method comprising: reserving said first resource for said communication; receiving one or more indications of an overlap between the reserved first resource and a second resource reserved by a second node; performing adjustments based on the one or more suggestions to mitigate the effect of the overlap; and Including, Non-transitory computer-readable medium.

Claims

1. 1. A method for providing resource suggestions in a communication, comprising: The first node determining an overlap between the reserved first resource and the reserved second resource by the second node; transmitting one or more indications indicating the overlap between the first resource and the second resource; Including, method.

2. the one or more suggestions are transmitted to the first node or to a third node different from the first and second nodes. The method of claim 1.

3. the overlap between the first resource and the second resource is determined by at least one of the second node or a third node distinct from the first and second nodes; The method of claim 1.

4. a first node comprising a first module for a first sidelink communication and a second module for a second sidelink communication, the overlap between the first resources and the second resources being determined by the first module of the first node and transmitted to the second module of the first node. The method of claim 1.

5. the one or more indications are transmitted via 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). The method of claim 1.

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

7. 2. The method of 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 that the first RAT and the second RAT are different from each other.

8. the one or more suggestions include a plurality of suggestions; each of the plurality of suggestions corresponds to at least one of a percentage of the overlap in a time domain, a percentage of the overlap in a frequency domain, or a percentage of the overlap in the time domain and the frequency domain; The method of claim 1.

9. The one or more indications may include an indication of overlap of at least a portion of a reserved channel, an indication of overlap of at least a portion of a reserved sub-channel, an indication of overlap of at least a portion of a reserved frame, an indication of overlap of at least a portion of reserved subframes, or an indication of overlap of at least a portion of reserved slots; The method of claim 1.

10. the one or more suggestions include a plurality of suggestions including a first suggestion and a second suggestion, the first suggestion indicating a higher level of the overlap than the second suggestion, and at least a portion of the first resource is to be yielded or removed when the first node receives the first suggestion N1 times or when the first node receives the second suggestion N2 times, N1 and N2 being integers, and N1 being less than N2; The method of claim 1.

11. the one or more suggestions include a plurality of suggestions, each of which is assigned a priority or relative priority; The method of claim 1.

12. 1. A method for obtaining one or more resource suggestions in a communication, comprising: The first node reserving first resources for the communication; receiving one or more indications indicating an overlap between the reserved first resources and a second resource reserved by a second node; performing adjustments based on the one or more suggestions to mitigate the effect of the overlap; and Including, method.

13. performing the adjustment based on the one or more suggestions includes: determining whether to vacate at least a portion of the reserved first resource; determining whether to exclude at least a portion of the resources from the selection; changing a modulation and coding scheme (MCS) for the first node; Varying a transmit power for the first node; or performing retransmissions using alternative resource reservations; at least one of: The method of claim 12.

14. the one or more suggestions include a plurality of suggestions, and performing the adjustment based on the one or more suggestions includes modifying the MCS for the first node based on the plurality of suggestions; the MCS corresponds to at least one of the type or number of the one or more suggestions; The method of claim 13.

15. taking into account the priority or relative priority of transmissions scheduled to use said first resource; further comprising: The method of claim 12.

16. considering the one or more suggestions if the distance between the first node and the device for which the overlap is determined is less than a threshold distance; further comprising: The method of claim 12.

17. performing the adjustment based on the one or more suggestions includes altering the transmit power for the first node based on the suggestions; The reduced transmit power is used for transmissions having a lower priority and the increased transmit power is used for transmissions having a higher priority. The method of claim 13.

18. The one or more suggestions include a plurality of suggestions, and the method further comprises: aggregating the plurality of suggestions in at least one of a time domain or a frequency domain 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 set or preset time domain threshold or frequency domain threshold; surrendering or excluding at least one resource in the time domain or the frequency domain 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; further comprising: The method of claim 12.

19. 1. An apparatus for providing one or more resource suggestions, comprising: a memory for storing instructions; Executing the instructions stored in the memory, determining an overlap between a first resource reserved by a first node and a second resource reserved by a second node; transmitting one or more indications indicating the overlap between the first resource and the second resource; a processor that executes Equipped with Device.

20. a first node for obtaining resource suggestions in a communication, a memory for storing instructions; Executing the instructions stored in the memory, reserving first resources for the communication; receiving one or more indications indicating an overlap between the reserved first resources and a second resource reserved by a second node; performing adjustments based on the one or more suggestions to mitigate the effects of the overlap; and a processor that executes Equipped with The first node.

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