UE, apparatus, and non-transitory computer-readable storage medium for utilizing inter-UE coordination messages

Abstract

The present invention discloses an apparatus, system and method for utilizing inter-UE coordination messages. A UE may receive an inter-UE coordination message from a first UE. The inter-UE coordination message may include an indication of a resource set and an indication of whether the resource set is a preferred resource or a non-preferred resource. The UE may be configured to select resources for sidelink communication based on the resource set indicated in the inter-UE coordination message. The UE may perform different selection processes based on the resource set indicated in the inter-UE coordination message. When the resource set is indicated as non-preferred, the UE may perform a first process and / or process set, and when the resource set is indicated as preferred, the UE may perform a second process and / or process set.

Description

Technical Field

[0001] The present invention relates to wireless communications, and more particularly to apparatus, systems and methods for utilizing inter-UE coordination messages, such as for V2X Mode 2 resource allocation.

[0002] Related technical description

[0003] The use of wireless communication systems is growing rapidly. One proposed use of wireless communication is in vehicular applications, particularly in V2X (Vehicle-to-Everything) systems. V2X systems allow communication between vehicles (e.g., via communication devices housed in or otherwise carried by the vehicle), pedestrian UEs (including UEs carried by other persons such as cyclists, etc.), and other wireless communication devices for various purposes such as for coordinating traffic movements, facilitating autonomous driving, and performing collision avoidance.

[0004] The increased communication requirements of certain V2X systems may strain the power and resource capabilities of portable battery-powered UE devices. Among other things, some UEs are more power-constrained than others, and host communications with the UE may present reduced battery life, increased latency, and degraded communication issues. Therefore, improvements in this area would be desired. Summary of the invention

[0005] Embodiments relate to wireless communications, including apparatus, systems, and methods for utilizing inter-UE coordination messages, such as for V2X Mode 2 resource allocation.

[0006] For example, in some embodiments, a user equipment device (UE) such as UE 106 may be configured to receive an inter-UE coordination message from a first UE. The inter-UE coordination message may include an indication of a resource set and an indication of whether the resource set is a preferred resource or a non-preferred resource. The UE may be configured to select resources for sidelink communication based on the resource set indicated in the inter-UE coordination message. In other words, the UE may perform different selection processes based on the resource set indicated in the inter-UE coordination message. For example, when the resource set is indicated as non-preferred, the UE may perform a first process and / or process set. In contrast, when the resource set is indicated as preferred, the UE may perform a second process and / or process set.

[0007] As an example, in some embodiments, the UE may be configured to determine resources available for sidelink communication, and when the resource set is indicated as non-preferred (e.g., via an inter-UE coordination message), exclude at least a portion of the resource set from the determined resources available for sidelink communication to generate a candidate resource set. As another example, in some embodiments, the UE may be configured to determine resources available for sidelink communication, and when the resource set is indicated as preferred (e.g., via an inter-UE coordination message), determine an interactive resource set based on a comparison of the resources available for sidelink communication with the resource set.

[0008] The techniques described herein may be implemented in and / or used with a plurality of different types of devices, including, but not limited to, any of unmanned aerial vehicles (UAVs), unmanned aerial controllers (UACs), UTM servers, base stations, access points, cellular telephones, tablet computers, wearable computing devices, portable media players, and a variety of other computing devices.

[0009] This summary is intended to provide a brief overview of some of the topics described in this document. Therefore, it should be understood that the above-mentioned features are only examples and should not be construed as narrowing the scope or essence of the topics described herein in any way. Other features, aspects and advantages of the topics described herein will become apparent through the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] A better understanding of the present subject matter may be obtained when the following detailed description of various embodiments is considered in conjunction with the following drawings, in which:

[0011] Figure 1 An exemplary vehicle-to-everything (V2X) communication system is shown in accordance with some embodiments.

[0012] Figure 2 A base station in communication with a user equipment (UE) device is shown according to some embodiments.

[0013] Figure 3 An exemplary block diagram of a UE according to some embodiments is shown.

[0014] Figure 4 An exemplary block diagram of cellular communication circuitry according to some embodiments is shown.

[0015] Figure 5 An example of a baseband processor architecture for a UE according to some embodiments is shown.

[0016] Figure 6 An exemplary block diagram of a base station according to some embodiments is shown.

[0017] Figure 7 An example of a vehicle-to-everything network is shown.

[0018] Figure 8 A block diagram illustrating an example of a method for a UE to perform resource selection utilizing non-preferred resources indicated in an inter-UE coordination message according to some embodiments.

[0019] Fig. 9 A block diagram illustrating an example of a method for a UE to perform resource reassessment utilizing non-preferred resources indicated in an inter-UE coordination message according to some embodiments.

[0020] Fig.10 A block diagram illustrating an example of a method for a UE to perform resource selection utilizing preferred resources indicated in an inter-UE coordination message according to some embodiments.

[0021] Fig.11 A block diagram illustrating an example of a method for a UE to perform resource reassessment utilizing preferred resources indicated in an inter-UE coordination message according to some embodiments.

[0022] Fig.12 A block diagram illustrating an example of a method for utilizing inter-UE coordination messages according to some embodiments is shown.

[0023] While the features described herein are susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and described in detail herein. However, it should be understood that the drawings and detailed description thereof are not intended to limit this document to the specific forms disclosed, but on the contrary, the purpose is to cover all modifications, equivalents and alternatives that fall within the spirit and scope of the subject matter as defined by the appended claims. DETAILED DESCRIPTION

[0024] Acronyms

[0025] Various acronyms are used throughout this disclosure. The definitions of the most prominent acronyms used that may appear throughout this disclosure are as follows:

[0026] ··3GPP: Third Generation Partnership Project

[0027] UE: User Equipment

[0028] RF: Radio Frequency

[0029] BS: Base Station

[0030] DL: Downlink

[0031] UL: Uplink

[0032] LTE: Long Term Evolution

[0033] NR: New Radio

[0034] 5GS: 5G system

[0035] 5GMM: 5GS Mobility Management

[0036] 5GC / 5GCN: 5G core network

[0037] IE: Information Element

[0038] CE: Control Element

[0039] MAC: Media Access Control

[0040] RRC: Radio Resource Control

[0041] the term

[0042] The following is a glossary of terms used in this disclosure:

[0043] Memory medium - any of various types of non-transitory memory devices or storage devices. The term "memory medium" is intended to include installation media, such as CD-ROM, floppy disk or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memory such as flash memory, magnetic media, for example, hard disk drive or optical storage device; registers or other similar types of memory elements, etc. The memory medium may also include other types of non-transitory memory or combinations thereof. In addition, the memory medium may be located in the first computer system executing the program, or may be located in a different second computer system connected to the first computer system via a network such as the Internet. In the latter case, the second computer system may provide program instructions to the first computer for execution. The term "memory medium" may include two or more memory media that may reside in different locations in different computer systems connected, for example, via a network. The memory medium may store program instructions (e.g., expressed as a computer program) that may be executed by one or more processors.

[0044] Carrier Media—storage media as described above, and physical transmission media such as a bus, network, and / or other physical transmission media that transport signals such as electrical, electromagnetic, or digital signals.

[0045] Programmable hardware elements - include a variety of hardware devices that include multiple programmable function blocks connected via programmable interconnects. Examples include FPGAs (field programmable gate arrays), PLDs (programmable logic devices), FPOAs (field programmable object arrays), and CPLDs (complex PLDs). Programmable function blocks can vary from fine-grained (combinational logic units or lookup tables) to coarse-grained (arithmetic logic units or processor cores). Programmable hardware elements may also be referred to as "configurable logic units."

[0046] Computer system (or computer)—any of various types of computing or processing systems, including personal computer systems (PCs), mainframe computer systems, workstations, network appliances, Internet appliances, personal digital assistants (PDAs), television systems, grid computing systems, or other devices or combinations of devices. In general, the term "computer system" can be broadly defined to encompass any device (or combination of devices) having at least one processor that executes instructions from a memory medium.

[0047] User equipment—as used herein, in the context of a V2X system may generally refer to equipment associated with mobile participants or traffic participants in the V2X system, e.g., mobile (capable of moving) communication devices such as vehicles and pedestrian user equipment (PUE) devices, rather than infrastructure equipment such as base stations, roadside units (RSUs), and servers.

[0048] Infrastructure equipment - as used herein, in the context of a V2X system, may generally refer to certain devices in a V2X system that are not user equipment and are not carried by traffic participants (e.g., pedestrians, vehicles, or other mobile users), but facilitate user equipment to participate in the V2X network. Infrastructure equipment includes base stations and roadside units (RSUs).

[0049] User Equipment (UE) (or "UE device") - any of various types of computer system devices that are mobile or portable and perform wireless communications. Examples of UE devices include mobile phones or smart phones (e.g., iPhone TM , based on Android TM phones), portable gaming devices (e.g., Nintendo DS TM , PlayStation Portable TM 、Gameboy Advance TM , iPhone TM), laptops, wearable devices (e.g., smart watches, smart glasses), PDAs, portable Internet devices, music players, data storage devices, other handheld devices, unmanned aerial vehicles (UAVs) (e.g., drones), UAV controllers (UACs), etc. In general, the term "UE" or "UE device" may be broadly defined to cover any electronic, computing, and / or telecommunication device (or combination of devices) that is easily transportable by a user and capable of wireless communication.

[0050] Pedestrian UE (PUE) Device - A user equipment (UE) device considered in the context of a V2X system that may be worn or carried by a variety of persons, including not only pedestrians in the strict sense of persons walking near a road, but also certain other peripheral or secondary participants or potential participants in a traffic environment. These include stationary persons, persons not in a vehicle and who may not necessarily be near traffic or roads, persons jogging, running, skating, etc., or persons in vehicles (such as bicycles, scooters, or certain motor vehicles) that may not substantially support the power capabilities of a UE.

[0051] Base Station—The term “base station” has the full breadth of its ordinary meaning and includes at least a wireless communication station that is installed at a fixed location and used to communicate as part of a wireless telephone system or radio system.

[0052] Processing element (or processor) - refers to various elements or combinations of elements that are capable of performing functions in a device such as user equipment or cellular network equipment. Processing elements may include, for example, processors and associated memory, portions or circuits of individual processor cores, entire processor cores, processor arrays, circuits such as ASICs (application specific integrated circuits), programmable hardware elements such as field programmable gate arrays (FPGAs), and any of the above various combinations.

[0053] Channel - a medium used to transmit information from a sender (transmitter) to a receiver. It should be noted that since the characteristics of the term "channel" may vary according to different wireless protocols, the term "channel" used in the present invention may be considered to be used in a manner that conforms to the standards of the type of device to which the term is used. In some standards, the channel width may be variable (e.g., depending on device capabilities, frequency band conditions, etc.). For example, LTE may support scalable channel bandwidths of 1.4 MHz to 20 MHz. In contrast, a WLAN channel may be 22 MHz wide, while a Bluetooth channel may be 1 Mhz wide. Other protocols and standards may include different definitions of channels. In addition, some standards may define and use multiple types of channels, such as different channels for uplink or downlink and / or different channels for different purposes such as data, control information, etc.

[0054] Frequency band—The term “frequency band” has the full breadth of its ordinary meaning and includes at least a segment of the spectrum (eg, radio frequency spectrum) in which channels are used or set aside for the same purpose.

[0055] Wi-Fi—The term "Wi-Fi" (or WiFi) has the full scope of its usual meaning and includes at least wireless communication networks or RATs that are served by wireless LAN (WLAN) access points and provide connectivity to the Internet through these access points. Most modern Wi-Fi networks (or WLAN networks) are based on the IEEE 802.11 standard and are marketed under the name "Wi-Fi". Wi-Fi (WLAN) networks are distinct from cellular networks.

[0056] 3GPP access—refers to access (e.g., radio access technology) specified by the 3GPP standards. These accesses include, but are not limited to, GSM / GPRS, LTE, LTE-A, and / or 5G NR. In general, 3GPP access refers to various types of cellular access technologies.

[0057] Non-3GPP access - refers to any access (e.g., radio access technology) not specified by the 3GPP standards. These accesses include, but are not limited to, WiMAX, CDMA2000, Wi-Fi, WLAN, and / or fixed networks. Non-3GPP accesses can be divided into two categories, "trusted" and "untrusted": trusted non-3GPP accesses can interact directly with the Evolved Packet Core (EPC) and / or 5G Core (5GC), while untrusted non-3GPP interoperates with the EPC / 5GC via network entities (such as Evolved Packet Data Gateways and / or 5G NR Gateways). In general, non-3GPP access refers to various types of non-cellular access technologies.

[0058] Automatic—refers to an action or operation being performed by a computer system (e.g., software executed by a computer system) or a device (e.g., a circuit, a programmable hardware element, an ASIC, etc.) without the action or operation being directly specified or performed by a user input. Thus, the term "automatically" is in contrast to an operation being manually performed or specified by a user, where the user provides input to directly perform the operation. An automatic process may be initiated by input provided by a user, but the subsequent "automatically" performed actions are not specified by the user, such as not being "manually" performed, where the user specifies each action to be performed. For example, a user filling out an electronic form by selecting each field and providing input specifying information (e.g., by typing in information, selecting checkboxes, radio selections, etc.) is not manually filling out the form, even though the computer system must update the form in response to the user action. The form may be automatically filled out by a computer system, where the computer system (e.g., software executed on the computer system) analyzes the fields of the form and fills out the form without any user input specifying the answers to the fields. As indicated above, a user may invoke automatic filling out of a form, but not participate in the actual filling out of the form (e.g., the user does not manually specify the answers to the fields but rather they are automatically completed). This specification provides various examples of operations that are automatically performed in response to actions taken by a user.

[0059] Approximately - refers to a value that is close to a correct or exact value. For example, approximately can refer to a value that is within 1% to 10% of an exact (or desired) value. However, it should be noted that the actual threshold value (or tolerance) may depend on the application. For example, in some embodiments, "approximately" may mean within 0.1% of some specified or desired value, while in various other embodiments, the threshold value may be, for example, 2%, 3%, 5%, etc., depending on the expectations or requirements of a particular application.

[0060] Concurrency - refers to parallel execution or implementation, where tasks, processes, or programs are executed in an at least partially overlapping manner. For example, concurrency can be achieved using "strong" or strict parallelism, where tasks are executed (at least partially) in parallel on respective computing elements, or using "weak parallelism," where tasks are executed in an interleaved manner (e.g., by time multiplexing of execution threads).

[0061] Various components may be described as being "configured to" perform one or more tasks. In such environments, "configured to" is a broad statement that generally means "having a structure" that performs one or more tasks during operation. Thus, even when the component is not currently performing the task, the component can be configured to perform the task (e.g., a set of electrical conductors can be configured to electrically connect a module to another module even when the two modules are not connected). In some contexts, "configured to" can be a broad statement that generally means "having a structure" that performs one or more tasks during operation. Thus, even when the component is not currently turned on, the component can be configured to perform the task. Typically, the circuitry that forms the structure corresponding to "configured to" may include hardware circuitry.

[0062] For ease of description, various components may be described as performing one or more tasks. Such descriptions should be interpreted as including the phrase "configured to". The description of a component being configured to perform one or more tasks is expressly intended not to invoke 35 U.S.C. §112(f) interpretation of that component.

[0063] Figure 1 :V2X communication system

[0064] Figure 1 An exemplary vehicle-to-everything (V2X) communication system is shown according to some embodiments. Note that Figure 1 The system is only one example of possible systems, and features of the present disclosure may be implemented in any of a variety of systems as desired.

[0065] A vehicle-to-everything (V2X) communication system may be characterized as a network in which vehicles, UEs, and / or other devices and network entities exchange communications to coordinate traffic activity and other possible purposes. V2X communications include communications transmitted between vehicles (e.g., wireless devices or communication devices that form part of or are contained in or otherwise carried by a vehicle, including UEs) and various other devices. V2X communications include vehicle-to-pedestrian (V2P) communications, vehicle-to-infrastructure (V2I) communications, vehicle-to-network (V2N) communications, and vehicle-to-vehicle (V2V) communications, as well as communications between vehicles and other possible network entities or devices. V2X communications may also refer to communications between other non-vehicle devices participating in a V2X network to share V2X-related information.

[0066] V2X communications may, for example, follow the 3GPP Cellular V2X (C-V2X) specification, or follow one or more other or subsequent standards, whereby vehicles and other devices and network entities may communicate. V2X communications may utilize both long range (e.g., cellular) communications and short to medium range (e.g., non-cellular) communications. V2X communications with cellular capabilities may be referred to as cellular V2X (C-V2X) communications. C-V2X systems may use various cellular radio access technologies (RATs), such as 4G LTE or 5G NRRAT. Certain LTE standards available in V2X systems may be referred to as LTE-Vehicle (LTE-V) standards.

[0067] As shown, the exemplary V2X system includes multiple user devices. As used herein in the context of a V2X system, and as defined above, the term "user device" may generally refer to a device associated with a mobile participant or traffic participant in a V2X system, such as a mobile (capable of moving) communication device such as a vehicle and a pedestrian user equipment (PUE) device. User devices in the exemplary V2X system include PUE 103A and 103B and vehicles 105A and 105B. Note that in various embodiments, PUE 103A and 103B and / or vehicles 105A and 105B may each be UE 106, for example, as further described herein.

[0068] Vehicle 105 may constitute various types of vehicles. For example, vehicle 105A may be a road vehicle or car, a public transportation vehicle, or another type of vehicle. Vehicle 105 may perform wireless communications in various ways. For example, vehicle 105A may include communications equipment that is part of the vehicle or housed in the vehicle, or may communicate through wireless communications devices currently contained in the vehicle or otherwise carried by the vehicle, such as user equipment (UE) devices (e.g., smart phones or similar devices) carried or worn by drivers, passengers, or other persons on the vehicle, as well as other possibilities. For simplicity, the term "vehicle" as used herein may include wireless communications equipment that represents the vehicle and performs its communications. Therefore, for example, when vehicle 105A is referred to as performing wireless communications, it should be understood that, more specifically, certain wireless communications equipment associated with and carried by vehicle 105A is performing wireless communications.

[0069] Pedestrian UE (PUE) 103 may constitute various types of user equipment (UE) devices, such as portable devices capable of wireless communication, such as smart phones, smart watches, etc., and may be associated with various types of users. Therefore, PUE 103 is a UE (such as UE 106) and may be referred to as a UE or UE device. It should be noted that although referred to as a PUE (pedestrian UE), PUE 103 may not necessarily be carried by a person actively walking near a road or street. PUE may refer to a UE participating in a V2X system, which is carried by a stationary person, by a walking or running person, or by a person on a vehicle (such as a bicycle, scooter, or certain motor vehicles) that may not substantially support the power capabilities of the device. Please also note that not all UEs participating in a V2X system are necessarily PUEs.

[0070] The user equipment is capable of communicating using multiple wireless communication standards. For example, in addition to at least one cellular communication protocol (e.g., GSM, UMTS, LTE, LTE-A, LTE-V, HSPA, 3GPP2 CDMA2000, 5G NR, etc.), the PUE 103A can be configured to communicate using wireless networking (e.g., Wi-Fi) and / or peer-to-peer wireless communication protocols (e.g., Bluetooth, Wi-Fi peer-to-peer). As desired, the PUE 103A can also be configured and / or alternatively configured to communicate using one or more global navigation satellite systems (GNSS, such as GPS or GLONASS), one or more mobile television broadcast standards (e.g., ATSC-M / H or DVB-H), and / or any other wireless communication protocols. Other combinations of wireless communication standards (including more than two wireless communication standards) are also possible.

[0071] As shown, some user devices may be able to communicate directly with each other, for example, without intermediate infrastructure equipment such as base station 102A or RSU 110A. As shown, vehicle 105A can directly perform V2X-related communications with vehicle 105B. Similarly, vehicle 105B can directly perform V2X-related communications with PUE 103B. In the case of some LTE and / or 5G NR implementation schemes, such peer-to-peer communications can utilize a "side link" interface such as a PC5 interface. In some implementation schemes, the PC5 interface supports direct cellular communications between user devices (e.g., between vehicles 105), while the Uu interface supports cellular communications with infrastructure equipment such as base stations. The PC5 / Uu interface is used only as an example, and PC5 as used herein may represent various other possible wireless communication technologies that allow direct side link communications between user devices, while Uu may further represent cellular communications performed between user devices and infrastructure equipment such as base stations. Some user devices (e.g., PUE 103A) in a V2X system may not be able to perform side link communications, for example, because they lack certain hardware required to perform such communications.

[0072] As shown in the figure, the exemplary V2X system includes a plurality of infrastructure devices in addition to the above-mentioned user equipment. As used herein, "infrastructure devices" in the context of the V2X system refer to certain devices in the V2X system that are not user equipment and are not carried by traffic participants (e.g., pedestrians, vehicles, or other mobile users), but facilitate user equipment to participate in the V2X network. The infrastructure devices in the exemplary V2X system include a base station 102A and a roadside unit (RSU) 110A.

[0073] Base station (BS) 102A may be a base transceiver station (BTS) or a cell site ("cellular base station"), and may include hardware capable of wirelessly communicating with user equipment (eg, with user equipment 103A and 105A).

[0074] The communication area (or coverage area) of a base station may be referred to as a "cell" or "coverage area". The base station 102A and user equipment such as PUE 103A may be configured to communicate through a transmission medium using any of a variety of radio access technologies (RATs), which are also referred to as wireless communication technologies or telecommunication standards, such as GSM, UMTS, LTE, Advanced LTE (LTE-A), LTE-Vehicle (LTE-V), HSPA, 3GPP2CDMA2000, 5G NR, etc. It should be noted that if the base station 102A is implemented in the context of LTE, it may alternatively be referred to as an "eNodeB" or eNB, and if the base station 102A is implemented in the context of 5G NR, it may alternatively be referred to as a "gNodeB" or gNB.

[0075] As shown, the base station 102A may also be equipped to communicate with the network 100 (e.g., a V2X network, as well as a core network of a cellular service provider, a telecommunication network such as a public switched telephone network (PSTN) and / or the Internet, among other possibilities). Thus, the base station 102A may facilitate communications between user devices and / or between user devices and the network 100. The base station 102A may provide user devices such as PUE 103A with various telecommunication capabilities such as voice, SMS, and / or data services. Specifically, the base station 102A may provide access to the V2X network to connected user devices such as PUE 103A and vehicles 105A.

[0076] Thus, although base station 102A may act as a "serving cell" for user equipment 103A and 105A, Figure 1 , but user devices 103B and 105B may also be able to communicate with base station 102A. The user devices shown, such as user devices 103A, 103B, 105A, and 105B, may also be able to receive signals from (and may be within communication range of) one or more other cells (which may be provided by base stations 102B-N and / or any other base stations), which one or more cells may be referred to as "neighboring cells." Such cells may also be able to facilitate communications between user devices and / or between user devices and network 100. Such cells may include "macro" cells, "micro" cells, "pico" cells, and / or cells of any various other granularity of service area size. For example, in Figure 1 The base stations 102A-102B shown in FIG. 1 may be macro cells, while the base station 102N may be a micro cell. Of course, other configurations are possible.

[0077] A roadside unit (RSU) 110A constitutes another infrastructure device that may be used to provide certain user devices with access to the V2X network. The RSU 110A may be one of various types of devices, such as a base station, e.g., a transceiver station (BTS) or a cell site ("cell site"), or another type of device that includes hardware capable of wirelessly communicating with user devices and facilitating their participation in the V2X network.

[0078] The RSU 110A may be configured to communicate using one or more wireless networking communication protocols (e.g., Wi-Fi), cellular communication protocols (e.g., LTE, LTE-V, 5G NR, etc.), and / or other wireless communication protocols. In some embodiments, the RSU 110A may be able to communicate with a device using a "sidelink" technology such as PC5.

[0079] The RSU 110A may communicate directly with user devices such as vehicles 106A and 106B as shown. The RSU 110A may also communicate with the base station 102A. In some cases, the RSU 110A may provide access to the base station 102A to certain user devices (e.g., vehicle 106B). Although the RSU 110A is shown as communicating with the vehicle 106, it may also (or otherwise) be able to communicate with the PUE 104. Similarly, the RSU 110A may not necessarily forward user device communications to the base station 102A. In some embodiments, the RSU 110A may constitute the base station itself, and / or may forward communications to the server 120.

[0080] As shown, the server 120 constitutes a network entity of the V2X system and may be referred to as a cloud server. The base station 102A and / or the RSU 110A may relay certain V2X-related communications between the user devices 104 and 106 and the server 120. The server 120 may be used to process certain information collected from multiple user devices and may manage V2X communications to the user devices in order to coordinate traffic activities. In various other embodiments of the V2X system, the various functions of the cloud server 120 may be performed by infrastructure equipment such as the base station 102A or the RSU 110A, by one or more user devices, and / or not performed at all.

[0081] Figure 2 – Communication between UE and base station

[0082] Figure 2 1 and 2. Figure 1 A user equipment (UE) device 106 (e.g., Figure 1 UE 106 may be a device with cellular communication capabilities, such as a mobile phone, a handheld device, a computer or a tablet computer, or virtually any type of portable wireless device.

[0083] UE 106 may include a processor configured to execute program instructions stored in a memory. UE 106 may perform any of the method implementations of the present invention by executing such stored instructions. Alternatively and / or in addition, UE 106 may include a programmable hardware element, such as an FPGA (field programmable gate array) configured to perform any of the method implementations of the present invention or any part of any of the method implementations of the present invention.

[0084] UE 106 may include one or more antennas for communicating using one or more wireless communication protocols or technologies. In some embodiments, UE 104 may be configured to communicate using, for example, CDMA2000 (1xRTT / 1xEV-DO / HRPD / eHRPD) LTE and / or 5G NR using a single shared radio component and / or 5G NR or LTE using a single shared radio component. The shared radio component may be coupled to a single antenna, or may be coupled to multiple antennas (e.g., for MIMO) for performing wireless communications. Typically, the radio component may include any combination of a baseband processor, an analog radio frequency (RF) signal processing circuit (e.g., including filters, mixers, oscillators, amplifiers, etc.) or a digital processing circuit (e.g., for digital modulation and other digital processing). Similarly, the radio component may use the aforementioned hardware to implement one or more receive chains and transmit chains. For example, UE 106 may share one or more portions of a receive chain and / or transmit chain between a variety of wireless communication technologies such as those discussed above.

[0085] In some embodiments, UE 106 may include a separate transmit chain and / or receive chain (e.g., including separate antennas and other radio components) for each wireless communication protocol configured to communicate therewith. As another possibility, UE 106 may include one or more radio components shared between multiple wireless communication protocols, and one or more radio components used uniquely by a single wireless communication protocol. For example, UE 106 may include a shared radio component for communicating using any one of 5GNR, LTE, and / or 1xRTT (or LTE or GSM), and a separate radio component for communicating using each of Wi-Fi and Bluetooth. Other configurations are also possible.

[0086] Figure 3 :UE block diagram

[0087] Figure 3 1 shows an exemplary simplified block diagram of a communication device 106 according to some embodiments. Note that Figure 3The block diagram of the communication device is only an example of a possible communication device. According to the embodiment, the communication device 106 can be a user equipment (UE) device (such as PUE 103 and / or vehicle 105), a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, a notebook or a portable computing device), a tablet computer, an unmanned aerial vehicle (UAV), a UAV controller (UAC) and / or a combination of devices and other devices. As shown in the figure, the communication device 106 may include a group of components 300 configured to perform core functions. For example, the group of components may be implemented as a system on a chip (SOC), which may include parts for various purposes. Alternatively, the group of components 300 may be implemented as a separate component or component group for various purposes. This group of components 300 may be (e.g., communicatively; directly or indirectly) coupled to various other circuits of the communication device 106.

[0088] For example, the communication device 106 may include various types of memory (e.g., including NAND flash memory 310), input / output interfaces such as a connector I / F 320 (e.g., for connecting to a computer system; a docking station; a charging station; an input device such as a microphone, a camera, a keyboard; an output device such as a speaker; etc.), a display 360 that may be integrated with the communication device 106 or external to the communication device, and cellular communication circuits 330 such as for 5G NR, LTE, GSM, etc., and short-range to medium-range wireless communication circuits 329 (e.g., Bluetooth TM In some embodiments, the communication device 106 may include wired communication circuitry (not shown), such as, for example, a network interface card for Ethernet.

[0089] Cellular communication circuitry 330 may be (e.g., communicatively; directly or indirectly) coupled to one or more antennas, such as antennas 335 and 336 as shown. Short-range to medium-range wireless communication circuitry 329 may also be (e.g., communicatively; directly or indirectly) coupled to one or more antennas, such as antennas 337 and 338 as shown. Alternatively, short-range to medium-range wireless communication circuitry 329 may be (e.g., communicatively; directly or indirectly) coupled to antennas 335 and 336 in addition to or in lieu of being (e.g., communicatively; directly or indirectly) coupled to antennas 337 and 338. Short-range to medium-range wireless communication circuitry 329 and / or cellular communication circuitry 330 may include multiple receive chains and / or multiple transmit chains for receiving and / or transmitting multiple spatial streams, such as in a multiple-input-multiple-output (MIMO) configuration.

[0090] In some embodiments, as further described below, the cellular communication circuit 330 may include dedicated receive chains (including and / or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and / or radio components) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G-NR). In addition, in some embodiments, the cellular communication circuit 330 may include a single transmit chain that can switch between radio components dedicated to specific RATs. For example, a first radio component may be dedicated to a first RAT, such as LTE, and may communicate with a dedicated receive chain and a transmit chain shared with an additional radio component, such as a second radio component that may be dedicated to a second RAT (e.g., 5G NR) and may communicate with the dedicated receive chain and the shared transmit chain.

[0091] The communication device 106 may also include and / or be configured for use with one or more user interface elements. The user interface elements may include various elements such as a display 360 (which may be a touch screen display), a keyboard (which may be a separate keyboard or may be implemented as part of a touch screen display), a mouse, a microphone and / or speakers, one or more cameras, one or more buttons, and / or any of a variety of other elements capable of providing information to a user and / or receiving or interpreting user input.

[0092] The communication device 106 may also include one or more smart cards 345 with SIM (Subscriber Identity Module) functionality, such as one or more UICC (Universal Integrated Circuit Card) cards 345. Note that the term "SIM" or "SIM entity" is intended to include any of various types of SIM implementations or SIM functions, such as one or more UICC cards 345, one or more eUICCs, one or more eSIMs, removable or embedded, etc. In some embodiments, the UE 106 may include at least two SIMs. Each SIM may execute one or more SIM applications and / or implement SIM functions in other ways. Thus, each SIM may be a single smart card that may be embedded, for example, soldered to a circuit board in the UE 106, or each SIM 310 may be implemented as a removable smart card. Thus, the SIM may be one or more removable smart cards (such as UICC cards, sometimes referred to as "SIM cards"), and / or the SIM 310 may be one or more embedded cards (such as embedded UICCs (eUICCs), sometimes referred to as "eSIMs" or "eSIM cards"). In some embodiments (such as when the SIM includes an eUICC), one or more of the SIMs may implement embedded SIM (eSIM) functionality; in such embodiments, a single SIM of the SIM may execute multiple SIM applications. Each SIM may include components such as a processor and / or a memory; instructions for performing SIM / eSIM functionality may be stored in the memory and executed by the processor. In some embodiments, the UE 106 may include a combination of removable smart cards and fixed / non-removable smart cards (such as one or more eUICC cards that implement eSIM functionality) as needed. For example, the UE 106 may include two embedded SIMs, two removable SIMs, or a combination of one embedded SIM and one removable SIM. Various other SIM configurations are also contemplated.

[0093] As described above, in some embodiments, UE 106 may include two or more SIMs. Including two or more SIMs in UE 106 may allow UE 106 to support two different phone numbers, and may allow UE 106 to communicate on corresponding two or more corresponding networks. For example, the first SIM may support a first RAT such as LTE, and the second SIM 310 may support a second RAT such as 5G NR. Of course, other implementations and RATs are also possible. In some embodiments, when UE 106 includes two SIMs, UE 106 may support dual card dual communication (DSDA) functionality. The DSDA functionality may allow UE 106 to be connected to two networks (and use two different RATs) at the same time, or allow two connections supported by two different SIMs using the same or different RATs to be maintained on the same or different networks at the same time. The DSDA functionality may also allow UE 106 to receive voice calls or data traffic on any phone number at the same time. In some embodiments, voice calls may be packet-switched communications. In other words, voice calls may be received using voice over LTE (VoLTE) technology and / or voice over NR (VoNR) technology. In some embodiments, the UE 106 may support dual SIM dual standby (DSDS) functionality. The DSDS functionality may allow either of the two SIMs in the UE 106 to standby for a voice call and / or data connection. In DSDS, when a call / data is established on one SIM, the other SIM is no longer active. In some embodiments, the DSDx functionality (DSDA or DSDS functionality) may be implemented using a single SIM (e.g., eUICC) that executes multiple SIM applications for different carriers and / or RATs.

[0094] As shown, the SOC 300 may include a processor 302 that may execute program instructions for the communication device 106 and a display circuit 304 that may perform graphics processing and provide display signals to a display 360. The one or more processors 302 may also be coupled to a memory management unit (MMU) 340 (which may be configured to receive addresses from the one or more processors 302 and convert those addresses to locations in a memory (e.g., memory 306, read-only memory (ROM) 350, NAND flash memory 310)) and / or to other circuits or devices (such as display circuit 304, short-range to medium-range wireless communication circuit 329, cellular communication circuit 330, connector I / F 320, and / or display 360). The MMU 340 may be configured to perform memory protection and page table translation or setup. In some embodiments, the MMU 340 may be included as part of the processor 302.

[0095] As described above, the communication device 106 may be configured to communicate using wireless and / or wired communication circuitry. The communication device 106 may be configured to perform a method for utilizing inter-UE coordination messages, such as for V2X Mode 2 resource allocation, as further described herein.

[0096] As described herein, the communication device 106 may include hardware and software components for implementing the above features of the communication device 106 to transmit a scheduling profile for power saving to the network. The processor 302 of the communication device 106 may be configured to implement some or all of the features described herein, for example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), the processor 302 may be configured as a programmable hardware element, such as an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit). Alternatively (or in addition), in combination with one or more of the other components 300, 304, 306, 310, 320, 329, 330, 340, 345, 350, 360, the processor 302 of the communication device 106 may be configured to implement some or all of the features described herein.

[0097] In addition, as described in the present invention, processor 302 may include one or more processing elements. Therefore, processor 302 may include one or more integrated circuits (ICs) configured to perform the functions of processor 302. In addition, each integrated circuit may include a circuit (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 302.

[0098] In addition, as described herein, the cellular communication circuit 330 and the short-range to medium-range wireless communication circuit 329 may each include one or more processing elements. In other words, one or more processing elements may be included in the cellular communication circuit 330, and similarly, one or more processing elements may be included in the short-range to medium-range wireless communication circuit 329. Therefore, the cellular communication circuit 330 may include one or more integrated circuits (ICs) configured to perform the functions of the cellular communication circuit 330. In addition, each integrated circuit may include a circuit (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the cellular communication circuit 330. Similarly, the short-range to medium-range wireless communication circuit 329 may include one or more ICs configured to perform the functions of the short-range to medium-range wireless communication circuit 329. In addition, each integrated circuit may include a circuit (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the short-range to medium-range wireless communication circuit 329.

[0099] Figure 4 : Block diagram of a cellular communication circuit

[0100] Figure 4An exemplary simplified block diagram of a cellular communication circuit according to some embodiments is shown. Note that Figure 4 The block diagram of the cellular communication circuit of is only one example of a possible cellular communication circuit. According to an embodiment, the cellular communication circuit 430 (which may be the cellular communication circuit 430) may be included in a communication device such as the communication device 106 described above. As described above, the communication device 106 may be a user equipment (UE) device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet computer, and / or a combination of devices, among other devices.

[0101] Cellular communication circuitry 430 may be (eg, communicatively; directly or indirectly) coupled to one or more antennas, such as ( Figure 4 In some embodiments, the cellular communication circuit 430 may include dedicated receive chains for multiple RATs (including and / or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and / or radio components (e.g., a first receive chain for LTE and a second receive chain for 4G NR). For example, Figure 4 As shown, cellular communication circuitry 430 may include modem 410 and modem 420. Modem 410 may be configured for communication according to a first RAT (such as LTE or LTE-A), and modem 420 may be configured for communication according to a second RAT (such as 4G NR).

[0102] As shown, the modem 410 may include one or more processors 412 and a memory 416 in communication with the processor 412. The modem 410 may communicate with a radio frequency (RF) front end 430. The RF front end 430 may include circuits for transmitting and receiving radio signals. For example, the RF front end 430 may include a receiving circuit (RX) 432 and a transmitting circuit (TX) 434. In some embodiments, the receiving circuit 432 may communicate with a downlink (DL) front end 450, which may include circuits for receiving radio signals via an antenna 335a.

[0103] Similarly, the modem 420 may include one or more processors 422 and a memory 426 in communication with the processor 422. The modem 420 may communicate with the RF front end 440. The RF front end 440 may include circuits for transmitting and receiving radio signals. For example, the RF front end 440 may include a receiving circuit 442 and a transmitting circuit 444. In some embodiments, the receiving circuit 442 may communicate with the DL front end 460, which may include circuits for receiving radio signals via the antenna 335b.

[0104] In some embodiments, the switch 470 may couple the transmit circuit 434 to an uplink (UL) front end 472. In addition, the switch 470 may couple the transmit circuit 444 to the UL front end 472. The UL front end 472 may include circuitry for transmitting radio signals via the antenna 336. Thus, when the cellular communication circuit 430 receives an instruction to transmit according to a first RAT (e.g., via a transmit chain including the transmit circuit 434 and the UL front end 472) supported by the modem 410, the switch 470 may be switched to a first state that allows the modem 410 to transmit signals according to the first RAT (e.g., via a transmit chain including the transmit circuit 434 and the UL front end 472). Similarly, when the cellular communication circuit 430 receives an instruction to transmit according to a second RAT (e.g., via a transmit chain including the transmit circuit 444 and the UL front end 472) supported by the modem 420, the switch 470 may be switched to a second state that allows the modem 420 to transmit signals according to the second RAT (e.g., via a transmit chain including the transmit circuit 444 and the UL front end 472).

[0105] In some embodiments, the cellular communication circuit 430 may be configured to perform a method utilizing inter-UE coordination messages, for example, for V2X Mode 2 resource allocation, as further described herein.

[0106] As described herein, the modem 410 may include hardware and software components for implementing the above features or for time-division multiplexing UL data for NSA NR operation and various other techniques described herein. For example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium), the processor 412 may be configured to implement part or all of the features described herein. Alternatively (or in addition), the processor 412 may be configured as a programmable hardware element, such as an FPGA (field programmable gate array) or as an ASIC (application-specific integrated circuit). Alternatively (or in addition), in combination with one or more of the other components 430, 432, 434, 450, 470, 472, 335, and 336, the processor 412 may be configured to implement part or all of the features described herein.

[0107] Among other things, as described herein, processor 412 may include one or more processing elements. Thus, processor 412 may include one or more integrated circuits (ICs) configured to perform the functions of processor 412. Among other things, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 412.

[0108] As described herein, the modem 420 may include hardware and software components for implementing the above features for transmitting a scheduling profile for power saving to a network, as well as various other techniques described herein. The processor 422 may be configured to implement part or all of the features described herein, for example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or in addition), the processor 422 may be configured as a programmable hardware element, such as an FPGA (field programmable gate array) or as an ASIC (application-specific integrated circuit). Alternatively (or in addition), in combination with one or more of the other components 440, 442, 444, 450, 470, 472, 335, and 336, the processor 422 may be configured to implement part or all of the features described herein.

[0109] Among other things, as described herein, processor 422 may include one or more processing elements. Thus, processor 422 may include one or more integrated circuits (ICs) configured to perform the functions of processor 422. Among other things, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 422.

[0110] Figure 5 :Baseband processor architecture

[0111] Figure 5 An example of a baseband processor architecture for a UE, such as UE 106, is shown according to some embodiments. Figure 5The baseband processor architecture 500 described in the figure may be implemented on one or more radio components (e.g., the radio components 429 and / or 430 described above) or modems (e.g., modems 510 and / or 520) as described above. As shown, the non-access layer (NAS) 510 may include a 5G NAS 520 and a traditional NAS 550. The traditional NAS 550 may include a communication connection with a traditional access layer (AS) 570. The 5G NAS 520 may include a communication connection with both the 5G AS 540 and the non-3GPP AS 530 and the Wi-Fi AS 532. The 5G NAS 520 may include functional entities associated with the two access layers. Therefore, the 5G NAS 520 may include multiple 5G MM entities 526 and 528 and 5G session management (SM) entities 522 and 524. The traditional NAS 550 may include functional entities such as a short message service (SMS) entity 552, an evolved packet system (EPS) session management (ESM) entity 554, a session management (SM) entity 556, an EPS mobility management (EMM) entity 558, and a mobility management (MM) / GPRS mobility management (GMM) entity 560. In addition, the traditional AS 570 may include functional entities such as an LTE AS 572, a UMTS AS 574, and / or a GSM / GPRS AS 576.

[0112] Thus, the baseband processor architecture 500 allows for a common 5G-NAS for both 5G cellular and non-cellular (e.g., non-3GPP access). Note that, as shown, the 5G MM can maintain a separate connection management and registration management state machine for each connection. In addition, a device (e.g., UE 106) can register to a single PLMN (e.g., 5GCN) using both 5G cellular access and non-cellular access. In addition, a device can be in a connected state in one access and in an idle state in another access, or vice versa. Finally, there may be common 5G-MM procedures (e.g., registration, deregistration, identification, authentication, etc.) for both accesses.

[0113] Note that in various embodiments, one or more of the above-mentioned functional entities of the 5G NAS and / or 5G AS may be configured to perform methods utilizing, for example, inter-UE coordination messages for V2X Mode 2 resource allocation, for example, as further described herein.

[0114] Figure 6 :Block diagram of base station

[0115] Figure 6 A base station 102 (eg, Figure 1 102A in FIG. 102B . Note that Figure 6The base station of is only one example of a possible base station. As shown, the base station 102 may include a processor 604 that can execute program instructions for the base station 102. The processor 604 may also be coupled to a memory management unit (MMU) 640 (which may be configured to receive addresses from the processor 604 and translate these addresses into locations in memory (e.g., memory 660 and read-only memory (ROM) 650)), or to other circuits or devices.

[0116] The base station 102 may include at least one network port 670. The network port 670 may be configured to couple to a telephone network and provide a plurality of devices, such as the UE device 106.

[0117] The network port 670 (or an additional network port) may also or alternatively be configured to couple to a cellular network, such as a core network of a cellular service provider. The core network may provide mobility-related services and / or other services to multiple devices, such as the UE device 106. In some cases, the network port 670 may be coupled to a telephone network via the core network, and / or the core network may provide a telephone network (e.g., in other UE devices served by the cellular service provider).

[0118] In some embodiments, base station 102 may be a next generation base station, e.g., a 5G New Radio (5G NR) base station, or "gNB". In such embodiments, base station 102 may be connected to a legacy Evolved Packet Core (EPC) network and / or to an NR Core (NRC) network. Furthermore, base station 102 may be considered a 5G NR cell and may include one or more transition and reception points (TRPs). Furthermore, a UE capable of operating in accordance with 5G NR may be connected to one or more TRPs within one or more gNBs.

[0119] The base station 102 may include at least one antenna 634 and possibly multiple antennas. At least one antenna 634 may be configured to operate as a wireless transceiver and may be further configured to communicate with the UE device 106 via the radio component 630. The antenna 634 communicates with the radio component 630 via a communication chain 632. The communication chain 632 may be a receive chain, a transmit chain, or both. The radio component 630 may be configured to communicate via various wireless communication standards, including but not limited to: 5G NR, LTE, LTE-A, GSM, UMTS, CDMA2000, Wi-Fi, etc.

[0120] The base station 102 may be configured to perform wireless communications using multiple wireless communication standards. In some cases, the base station 102 may include multiple radio components that enable the base station 102 to communicate according to multiple wireless communication technologies. For example, as one possibility, the base station 102 may include an LTE radio component for performing communications according to LTE and a 5G NR radio component for performing communications according to 5G NR. In this case, the base station 102 may be able to operate as both an LTE base station and a 5GNR base station. As another example, the base station 102 may include a 5G NR radio component for performing communications according to 5G NR, and a Wi-Fi radio component for performing communications according to Wi-Fi. In this case, the base station 102 may be able to operate as both a 5G NR base station and a Wi-Fi access point. As another possibility, the base station 102 may include a multimode radio component that can perform communications according to any one of a plurality of wireless communication technologies (e.g., 5G NR and Wi-Fi, LTE and Wi-Fi, LTE and UMTS, LTE and CDMA2000, UMTS and GSM, etc.).

[0121] As further described later herein, BS102 may include hardware and software components for implementing or supporting the specific implementation of the features described herein. The processor 604 of the base station 102 may be configured to implement or support the specific implementation of some or all of the methods described herein, for example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively, the processor 604 may be configured as a programmable hardware element such as an FPGA (field programmable gate array) or as an ASIC (application-specific integrated circuit) or a combination thereof. Alternatively (or in addition thereto), in combination with one or more of the other components 630, 632, 634, 640, 650, 660, 670, the processor 604 of the BS102 may be configured to implement or support a specific implementation of part or all of the features described herein.

[0122] In addition, as described herein, processor 604 may be composed of one or more processing elements. In other words, one or more processing elements may be included in processor 604. Therefore, processor 604 may include one or more integrated circuits (ICs) configured to perform the functions of processor 604. In addition, each integrated circuit may include a circuit (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processor 604.

[0123] In addition, as described herein, radio 630 may be comprised of one or more processing elements. In other words, one or more processing elements may be included in radio 630. Thus, radio 630 may include one or more integrated circuits (ICs) configured to perform the functions of radio 630. In addition, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of radio 630.

[0124] Sidelink Resource Management

[0125] In some existing implementations, a listen-before-talk (LBT) mechanism may be used to access a shared medium (such as an unlicensed band commonly used for Wi-Fi, Bluetooth, and other short-range to medium-range communications (e.g., non-3GGP access)) to avoid collisions (of transmissions from two or more wireless devices attempting to access the shared medium) and to improve medium utilization efficiency. However, the LBT mechanism is not collision-free. In other words, the LBT mechanism cannot guarantee collision-free transmissions.

[0126] For example, in the case of unicast transmissions, the transmitter may easily detect transmission conflicts based on the receiver's acknowledgement / negative acknowledgement (ACK / NACK) feedback. However, in the case of multicast (or groupcast) transmissions, the transmitter may not easily detect conflicts based on the receiver's ACK / NACKs, due at least in part to the heavy traffic associated with ACK / NACKs from multiple receivers and the transmitter's inability to distinguish (or isolate) transmission conflicts from channel quality issues based on the received ACK / NACKs. In other words, since the receivers in a multicast transmission may have different locations with different channel qualities, the transmitter cannot determine the cause of the NACK (e.g., transmission conflict vs. poor channel quality). In addition, in the case of broadcast transmissions, it is not feasible to know the feedback from the receivers, so in this scenario, the transmitter will not be aware of the conflict. In addition, in some specific implementations, the transmitter may reserve periodic time slots for communication within the reserved period. In such specific implementations, if a conflict occurs, if the transmitter does not detect (or cannot detect) the conflict, the conflict may last for at least a portion of the reserved period (and in the worst case, the duration of the reserved period).

[0127] As an example, vehicle-to-everything (V2X) communications (e.g., as specified in 3GPP TS 22.185 V.14.3.0 and beyond) allow for communication between a vehicle (e.g., a mobile unit within a vehicle, such as a wireless device included within or currently included within the vehicle and / or another transmitter included or included within the vehicle) and various wireless devices. Figure 7As shown, a vehicle such as vehicle 712a can communicate with various devices (e.g., devices 712b-f), such as roadside units (RSUs), infrastructure (V2I), networks (V2N), pedestrians (V2P), and / or other vehicles (V2V). In addition, as shown, all devices within the V2X framework can communicate with other devices. V2X communications can utilize long-range (e.g., cellular) communications as well as short-range to medium-range communications (e.g., non-cellular). In some contemplated implementations, non-cellular communications may use unlicensed bands as well as a dedicated spectrum of 5.9 GHz. In addition, V2X communications may include unicast, multicast, groupcast, and / or broadcast communications. Each type of communication may employ an LBT mechanism. In addition, according to the V2X communication protocol, a transmitter may reserve periodic time slots within a reserved period. Therefore, as described above, in various situations, in some cases, a transmitter utilizing V2X communications may not be able to detect a conflict after using the LBT mechanism.

[0128] In some existing implementations, 5G NR V2X may include various scheduling modes. For example, 5G NR V2X Mode 2 may be designed for UE self-determination of sidelink transmission resources. 5G NR V2X Mode 2 includes various sub-modes, including:

[0129] Mode 2(a), in which the user equipment device (UE) autonomously selects the sidelink resources for transmission;

[0130] Mode 2(b), where UE assists other UEs in sidelink resource selection;

[0131] Mode 2(c), where the UE is configured with an NR-configured grant for sidelink transmissions (e.g., a network-defined semi-persistent grant); and

[0132] Mode 2(d), where a UE schedules sidelink transmissions of other UEs.

[0133] In addition, due to the periodicity of V2X messaging, existing implementations of V2X may support semi-persistent scheduling (SPS), such as configured grants. For example, semi-persistent resources in SPS may represent timely repeating resources over a set of discontinuous subframes with a specific repetition period. In addition, existing implementations of SPS (e.g., LTE V2X) and their corresponding resource allocation designs are optimized for broadcast services. However, 5G NR V2X Mode 2 also supports both unicast services and multicast services. Therefore, there is a strong need to enhance methods that facilitate semi-persistent resource allocation for unicast services and multicast services in 5G NR V2X Mode 2.

[0134] Utilization of Inter-UE Coordination Messages

[0135] In current cellular communication systems such as defined by NR V2X Release 16, for a Mode 2 resource allocation scheme, a transmitting wireless device may select sidelink transmit resources based on its own sensing and resource selection process, for example, without input from a receiving wireless device. NR V2X Release 17 introduces: For inter-UE coordination of Mode 2 resource allocation, a resource set may be determined by a first wireless device (e.g., UE-A) and sent to a second wireless device (UE-B). The second wireless device may then consider the resource set in resource selection for its own transmissions.

[0136] To determine the resource set, candidate resources are identified within the resource selection window. Note that if a resource is reserved and the associated RSRP measurement is above a threshold, the resource may be excluded, wherein an initial RSRP threshold is preconfigured for each combination of the priority of the data to be transmitted and the priority of the data for which the resource is reserved. Identification may be stopped when the number of identified candidate resources is greater than X% of the number of all resources in the resource selection window in the resource pool. Note that X may be 20, 35, and / or 50 and may be preconfigured per resource pool per L1 priority. Note also that if the number of identified candidate resources does not exceed X% of the number of all resources in the resource selection window in the resource pool after the identification process is completed, the RSRP threshold (initial and / or current) may be increased by 3dB and the identification process may be repeated. Once the resource set is identified, it may be transmitted to the second wireless device. The second wireless device may perform randomized resource selection based on the resource set and ensure a minimum time gap between any two selected resources of the TB, where HARQ feedback for the first of these resources is expected.

[0137] Specifically, the total number of candidate single-slot resources in the resource selection window can be set to M total In addition, a sensing window may be defined via the sensing operation, and an internal RSRP threshold for resource exclusion may be set. Furthermore, the set of all candidate single-slot resources may be initially set to S A , and due to not monitoring the time slot and / or due to resource reservation conflict (e.g., the RSRP of the resources reserved by the sidelink control information (SCI) and / or the physical sidelink control channel (PSCCH) or physical sidelink shared channel (PSSCH) associated with the reserved SCI is greater than the RSRP threshold), the first wireless device may select the time slot from S A Any candidate single-slot resource is excluded. Then, if S A The number of candidate single-slot resources in is less than X and M total If the product of the resource is not excluded, the RSRP threshold is increased by 3dB and the elimination process is repeated. A May be reported to higher layers.

[0138] However, the behavior of the second wireless device after receiving the resource set remains undefined. For example, the undefined behaviors include a resource selection process of the second wireless device after receiving the resource set, a resource re-evaluation process of the second wireless device after receiving the resource set, and a resource preemption check of the second wireless device after receiving the resource set. In addition, it is not yet defined whether the second wireless device will have different behaviors depending on the content of the resource set.

[0139] Embodiments described herein provide systems, methods, and mechanisms for utilizing inter-UE coordination messages, for example, for V2X Mode 2 resource allocation. In some embodiments, a UE (such as UE 106) may receive an inter-UE coordination message from a coordinating UE, wherein the inter-UE coordination message may indicate a resource set for the UE. Upon receiving the inter-UE coordination message, the behavior of the UE may depend on the category of the coordinating UE. For example, if the coordinating UE is, for example, an auxiliary UE that sends a reference resource set for the UE, the UE may have flexibility in its resource selection process. As another example, if the coordinating UE is a controlling UE, the UE may be required to follow the resource set indicated in the inter-UE coordination message. In addition, upon receiving the inter-UE coordination message, the behavior of the UE may depend on the content of the inter-UE coordination message. For example, if the inter-UE coordination message includes auxiliary information (such as a reason for not preferring certain resources) as well as a resource set and / or when the inter-UE coordination message includes auxiliary information as well as a resource set, the UE may have flexibility in its resource selection process (e.g., the UE may not be limited to following the recommended resources in the inter-UE coordination message). In addition, upon receiving the inter-UE coordination message, the behavior of the UE may depend on the time when the inter-UE coordination message was received. For example, if an inter-UE coordination message is received within a configured time threshold before a planned sidelink transmission and / or when an inter-UE coordination message is received within a configured time threshold before a planned sidelink transmission, the UE may not have sufficient time to process and apply the resources in the inter-UE coordination message. Therefore, the UE may not perform resource reassessment and / or resource preemption operations.

[0140] In some embodiments, a UE (such as UE 106) may receive an inter-UE coordination message including an indication of a non-preferred resource. Based on the indication of the non-preferred resource, the UE may perform resource selection and / or resource reselection, for example, via a re-evaluation process. For example, Figure 8 and Fig. 9 A block diagram showing an example of such a process according to some embodiments is shown. Note that, among other devices, Figure 8 and Fig. 9The method shown in the figure can also be used in combination with any of the systems, methods or devices shown in the figures. Note that in the embodiments described herein, the inter-UE coordination message can be transmitted from the coordinating UE to the UE, wherein the coordinating UE determines a resource set to be indicated via the inter-UE coordination message, and wherein the UE uses the resource set for sidelink transmission.

[0141] Go to Figure 8 , a block diagram showing an example of a method for a UE to perform resource selection using a non-preferred resource indicated in an inter-UE coordination message according to some embodiments. Note that, among other devices, Figure 8 The method shown in the figure can also be used in combination with any one of the systems, methods or devices shown in the drawings. In various embodiments, some of the method elements shown can be performed concurrently in an order different from the order shown, or can be omitted. Additional method elements can also be performed as required. As shown in the figure, the method can be operated as follows.

[0142] At 802, a UE (such as UE 106) may receive a non-preferred resource set from a coordinating UE via an inter-UE coordination message. At this point, the UE may not have selected a sidelink resource, so the UE may apply a non-preferred resource set as part of a resource selection process. Therefore, the UE may identify a resource set within a resource selection window. Then, at 804, the UE may exclude non-preferred resources from a resource set for sidelink transmission to generate a candidate resource set. For example, in some embodiments, the physical layer of the UE may identify a resource set within a resource selection window (e.g., based on sensing) and pass the resource set to the MAC layer of the UE. The MAC layer may then generate a candidate resource set, for example, via the exclusion of non-preferred resources. As another example, in some embodiments, the physical layer of the UE may identify a resource set within a resource selection window (e.g., based on sensing) and receive non-preferred resources indicated in an inter-UE coordination message from the MAC layer of the UE. The physical layer may then generate a candidate resource set, for example, via the exclusion of non-preferred resources and pass these candidate resources to the MAC layer. Note that, depending on the category of the first UE and / or auxiliary information (such as RSRP for the resource set and / or data priority of the resource set), not all resources from the non-preferred resources may be excluded from the resource set. For example, the UE may determine, based on the category of the first UE, that resources do not need to follow the recommended resource selection of all first UEs. As another example, based on the auxiliary information, the UE may determine that non-preferred resources may be preferred for the UE, for example, based on RSRP sensed by the UE. At 806, the UE may perform a random resource selection process on the candidate resource set, for example, to determine a resource set for sidelink communication. In at least some instances, the MAC layer may perform the random resource selection process.

[0143] Go to Fig. 9, a block diagram showing an example of a method for a UE to perform resource reselection using a non-preferred resource indicated in an inter-UE coordination message according to some embodiments. As described, among other devices, Fig. 9 The method shown in can also be used together with any one of the system, method or device shown in the figure. In various embodiments, some of the method elements shown can be performed concurrently in an order different from the order shown, or can be omitted. Additional method elements can also be performed as required. As shown in the figure, the method can be operated as follows.

[0144] At 902, a UE, such as UE 106, may receive a non-preferred resource set from a coordinating UE via an inter-UE coordination message. The UE may have previously selected a resource set, for example, based on a previous and / or previous resource set indicated via a previous and / or previous inter-UE coordination message. Note that in some embodiments, the UE may not have reserved the selected resources prior to receiving the inter-UE coordination message. In some embodiments, the UE may have reserved the selected resources prior to receiving the inter-UE coordination message. The inter-UE coordination message may include auxiliary information.

[0145] At 904, the UE may update the selected resource set based on the inter-UE coordination message and whether the UE has reserved the selected resource. For example, if the UE has not reserved the selected resource, the UE may exclude non-preferred resources from the selected resource set to generate an updated resource set. In other words, the UE may update the selected resource by excluding the intersection between the selected resource set and the non-preferred resource set. Note that if the updated resource set after exclusion is a strict subset of the selected resource set, the UE may trigger a resource selection process at 906. Note also that if the auxiliary information is included in the inter-UE coordination message, the UE may consider the auxiliary information during the exclusion process, such as described above. As another example, if the UE has reserved the selected resource (e.g., via SCI signaling), the UE may pass the selected and reserved resources and the non-preferred resource set to the physical layer. Then, at 906, the physical layer may perform a preemption check on the selected resource, wherein the non-preferred resource set may be considered as a reserved resource by other UEs, wherein the RSRP level and data priority in the associated SCI are provided via the inter-UE coordination message.

[0146] At 906, the UE may perform a resource selection process on the updated set of resources, eg, to determine a set of resources to use for sidelink communication.

[0147] In some embodiments, a UE (such as UE 106) may receive an inter-UE coordination message including an indication of a preferred resource. Based on the indication of the preferred resource, the UE may perform resource selection and / or resource reselection, for example, via a re-evaluation process. For example, Fig.10 and Fig.11 A block diagram showing an example of such a process according to some embodiments is shown. Note that, among other devices, Fig.10 and Fig.11 The method shown in the figure can also be used in combination with any of the systems, methods or devices shown in the figures. Note that in the embodiments described herein, the inter-UE coordination message can be transmitted from the coordinating UE to the UE, wherein the coordinating UE determines a resource set to be indicated via the inter-UE coordination message, and wherein the UE uses the resource set for sidelink transmission.

[0148] Go to Fig.10 , a block diagram showing an example of a method for a UE to perform resource selection using a preferred resource indicated in an inter-UE coordination message according to some embodiments. Note that, among other devices, Fig.10 The method shown in the figure can also be used in combination with any one of the systems, methods or devices shown in the drawings. In various embodiments, some of the method elements shown can be performed concurrently in an order different from the order shown, or can be omitted. Additional method elements can also be performed as required. As shown in the figure, the method can be operated as follows.

[0149] At 1002, a UE (such as UE 106) may receive a preferred resource set from a coordinating UE via an inter-UE coordination message. At this point, the UE may not have selected a sidelink resource, so the UE may apply a non-preferred resource set as part of a resource selection process. Therefore, at 1004, the UE may identify a resource set within a resource selection window. Therefore, the UE may perform a candidate resource selection process based on the resource selection window to generate a candidate resource set. In some embodiments, the physical layer of the UE may perform the resource selection process, for example, based on sensing (measurement) of the resource at the UE. Then, at 1006, the UE may determine an interactive resource set based on a comparison of the preferred resource set with the candidate resource set. In some embodiments, the physical layer may pass the candidate resource set to the MAC layer of the UE, and the MAC layer may determine the interactive set.

[0150] At 1008, the UE may perform a resource selection process on the interaction resource set, for example, to determine a resource set for sidelink communication. In some embodiments, if the cardinality of the interaction resource set is equal to the number of resources to be selected, the determined resource set may be an interaction resource set. Alternatively, if the cardinality of the interaction resource set is less than the number of resources to be selected, additional resources up to the number of resources to be selected may be randomly selected from the candidate resource set excluding the interaction resource set, in addition to the intersection resource set. In addition, if the cardinality of the resource interaction is greater than the number of resources to be selected, the determined resource set may be randomly selected from the interaction resource set. Alternatively, if the auxiliary information included in the inter-UE coordination message includes a ranking of preferred resource sets, the determined resource set may be selected in the order of the ranking, where higher ranked resources are selected before lower ranked resources.

[0151] Go to Fig.11 , a block diagram showing an example of a method for a UE to perform resource reassessment using a preferred resource indicated in an inter-UE coordination message according to some embodiments. As described, among other devices, Fig.11 The method shown in can also be used together with any one of the system, method or device shown in the figure. In various embodiments, some of the method elements shown can be performed concurrently in an order different from the order shown, or can be omitted. Additional method elements can also be performed as required. As shown in the figure, the method can be operated as follows.

[0152] At 1102, a UE (such as UE 106) may receive a preferred resource set from a coordinating UE via an inter-UE coordination message. The UE may have previously selected a resource set, for example, based on a previous and / or previous resource set indicated via a previous and / or previous inter-UE coordination message. Note that in some embodiments, the UE may not have reserved the selected resources prior to receiving the inter-UE coordination message. In some embodiments, the UE may have reserved the selected resources prior to receiving the inter-UE coordination message. The inter-UE coordination message may include auxiliary information.

[0153] At 1104, the UE may perform a resource re-evaluation and / or re-selection process based on the preferred resource set. For example, the UE may consider the preferred resource set as a selected resource that needs to be re-evaluated.

[0154] At 1106, the UE may select a desired number of resources from the preferred set of resources. In some embodiments, the UE may rank the preferred set of resources based on, for example, sensing performed by the UE. The UE may then select a desired number of the highest ranked preferred resources, for example, to determine a resource set for sidelink communication. Alternatively, the UE may randomly select a desired number of resources from the preferred set of resources.

[0155] Fig.12 A block diagram illustrating an example of a method for utilizing inter-UE coordination messages according to some embodiments. Among other devices, Fig.12 The method shown in can also be used together with any one of the system, method or device shown in the figure. In various embodiments, some of the method elements shown can be performed concurrently in an order different from the order shown, or can be omitted. Additional method elements can also be performed as required. As shown in the figure, the method can be operated as follows.

[0156] At 1202, a UE, such as UE 106, may receive an inter-UE coordination message from a first UE. The inter-UE coordination message may include an indication of a resource set and an indication of whether the resource set is a preferred resource or a non-preferred resource.

[0157] At 1204, the UE may select resources for sidelink communication based on the resource set indicated in the inter-UE coordination message. In other words, the UE may perform different selection procedures based on the resource set indicated in the inter-UE coordination message. Thus, for example, when the resource set is indicated as non-preferred, the UE may perform a first procedure and / or set of procedures, and when the resource set is indicated as preferred, the UE may perform a second procedure and / or set of procedures, e.g., as further described herein.

[0158] In some embodiments, the UE may determine resources available for sidelink communication, and when the resource set is indicated as non-preferred (e.g., via an inter-UE coordination message), exclude at least a portion of the resource set from the determined resources available for sidelink communication to generate a candidate resource set. In some embodiments, selecting resources for sidelink communication may include randomly selecting resources from the candidate resource set. In some embodiments, the physical layer of the UE may determine resources available for sidelink communication, and may pass the resources available for sidelink communication to the medium access control (MAC) layer of the UE. The MAC layer of the UE may generate a candidate resource set, and may perform selection of resources for sidelink communication. In some embodiments, the physical layer of the UE may determine resources available for sidelink communication, and may receive the resource set from the MAC layer of the UE. The physical layer of the UE may generate a candidate resource set, and may pass the candidate resource set to the MAC layer. The MAC layer may perform selection of resources for sidelink communication.

[0159] In some embodiments, the UE may determine resources available for sidelink communication, and when the resource set is indicated as preferred (e.g., via an inter-UE coordination message), determine an interactive resource set based on a comparison of resources available for sidelink communication with the resource set. In some embodiments, selecting resources for sidelink communication may include randomly selecting resources from the interactive resource set. In addition, when the number of resources to be selected is less than the number of resources in the interactive resource set and the inter-UE coordination message includes an indication of the ranking of resources within the resource set, selecting resources for sidelink communication may include selecting resources from the interactive resource set based on the ranking of the indicated resources within the resource set. Resources up to the number of resources to be selected may be selected from the highest ranking in descending order. In some embodiments, the physical layer of the UE may determine resources available for sidelink communication, and the resources available for sidelink communication may be passed to the MAC layer of the UE. The MAC layer of the UE may generate an interactive set, and may perform selection of resources for sidelink communication.

[0160] In some embodiments, the UE may receive a second inter-UE coordination message from the first UE before reserving the selected side link resources. The second inter-UE coordination message may include an indication of a second resource set and an indication that the second resource set is a non-preferred resource. The UE may exclude resources in the selected side link resources indicated as non-preferred by the second resource set based on a comparison of the selected side link resources with the second resource set. In some embodiments, when the second resource set is a strict subset of the selected resources, the UE may randomly select up to the number of resources required for the selection from the excluded resources. In some embodiments, when the second resource set is a strict subset of the selected resources and the auxiliary information is provided by the first UE, the UE may select up to the number of resources required for the selection from the excluded resources based at least in part on the auxiliary information. The auxiliary information may include a reference signal received power (RSRP) for at least each resource in the second resource set.

[0161] In some embodiments, the UE may receive a second inter-UE coordination message from the first UE after reserving the selected side link resources. The second inter-UE coordination message may include an indication of the second resource set and an indication that the second resource set is a non-preferred resource. The UE may exclude resources in the selected side link resources indicated as non-preferred by the second resource set based on a comparison of the selected side link resources with the second resource set. In some embodiments, the second inter-UE coordination message may also include auxiliary information for the second resource set.

[0162] In some embodiments, the UE may receive a second inter-UE coordination message from the first UE after selecting the sidelink resources. The second inter-UE coordination message may include an indication of the second resource set and an indication that the second resource set is a preferred resource. The UE may select resources in the second resource set based on the interference level. Resources up to the number of required resources may be selected in descending order. The UE may reserve the resources selected from the second set.

[0163] In some embodiments, the UE may receive a second inter-UE coordination message from the first UE after selecting the sidelink resources. The second inter-UE coordination message may include an indication of the second resource set and an indication that the second resource set is a preferred resource. The UE may randomly select up to the number of required resources from the second resource set. The UE may reserve the resources selected from the second set.

[0164] The embodiments of the present disclosure may be implemented in any of a variety of forms. For example, some embodiments may be implemented as computer-implemented methods, computer-readable storage media, or computer systems. Other embodiments may be implemented using one or more custom-designed hardware devices such as ASICs. Other embodiments may be implemented using one or more programmable hardware elements such as FPGAs.

[0165] In some embodiments, a non-transitory computer-readable storage medium may be configured such that it stores program instructions and / or data, wherein if these program instructions are executed by a computer system, the computer system is caused to perform a method, such as any one of the method embodiments described herein, or any combination of the method embodiments described herein, or any subset of any one of the method embodiments described herein or any combination of such subsets.

[0166] In some embodiments, a device (e.g., UE 106) may be configured to include a processor (or a group of processors) and a memory medium, wherein the memory medium stores program instructions, wherein the processor is configured to read and execute these program instructions from the memory medium, wherein these program instructions are executable to implement any of the various method implementations described herein (or any combination of the method implementations described herein, or any subset of any of the method implementations described herein or any combination of such subsets). The device may be implemented in any of various forms.

[0167] By interpreting each message / signal X received by a user equipment (UE) in the downlink as a message / signal X transmitted by the base station, and interpreting each message / signal Y transmitted by the UE in the uplink as a message / signal Y received by the base station, any of the methods for operating a UE described herein may become the basis for the corresponding method for operating a base station.

[0168] Although the above embodiments have been described in considerable detail, numerous variations and modifications will become apparent to those skilled in the art once the above disclosure is fully appreciated. It is intended that the following claims be interpreted to encompass all such variations and modifications.

Claims

1. A user equipment device UE, comprising: at least one antenna; at least one radio component, wherein the at least one radio component is configured to perform wireless communications using at least one radio access technology (RAT); one or more processors coupled to the at least one radio, wherein the one or more processors and the at least one radio are configured to perform voice and / or data communications; and The one or more processors are configured to cause the UE to: receiving a first inter-UE coordination message from a first UE, wherein the first inter-UE coordination message includes an indication of a first resource set and an indication of whether the first resource set is a preferred resource or a non-preferred resource; selecting a sidelink resource for sidelink communication based on the first resource set indicated in the first inter-UE coordination message; receiving a second inter-UE coordination message from the first UE before reserving the selected sidelink resources, wherein the second inter-UE coordination message includes an indication of a second set of resources and an indication that the second set of resources are non-preferred resources; and Based on a comparison between the selected sidelink resources and the second set of resources, resources in the selected sidelink resources indicated as non-preferred by the second set of resources are excluded.

2. The UE according to claim 1, The one or more processors are further configured to cause the UE to: determining resources available for sidelink communications; and When the first resource set is indicated as non-preferred, at least a portion of the first resource set is excluded from the determined resources that can be used for sidelink communication to generate a candidate resource set.

3. The UE according to claim 2, in, To select a sidelink resource for sidelink communication, the one or more processors are further configured to cause the UE to randomly select a resource from the set of candidate resources.

4. The UE according to claim 2, The physical layer of the UE determines the resources that can be used for sidelink communication, and transfers the resources that can be used for sidelink communication to the medium access control MAC layer of the UE.

5. The UE according to claim 4, The MAC layer of the UE generates the candidate resource set and performs selection of the sidelink resource for sidelink communication.

6. The UE according to claim 2, The physical layer of the UE determines the resources that can be used for sidelink communication, and receives the first resource set from the medium access control MAC layer of the UE.

7. The UE according to claim 6, wherein the physical layer of the UE generates the candidate resource set and communicates the candidate resource set to the MAC layer, and wherein the MAC layer performs selection of the sidelink resources for sidelink communication.

8. The UE according to claim 1, The one or more processors are further configured to cause the UE to: determining resources available for sidelink communications; and When the first resource set is indicated as preferred, an interactive resource set is determined based on a comparison of the resources that can be used for sidelink communication with the first resource set.

9. The UE according to claim 8, in, To select a sidelink resource for sidelink communication, the one or more processors are further configured to cause the UE to randomly select a resource from the set of interaction resources.

10. The UE according to claim 8, in, When the number of resources to be selected is less than the number of resources in the interactive resource set and the first UE-to-UE coordination message includes an indication of the ordering of the resources within the first resource set, in order to select resources for sidelink communication, the one or more processors are further configured to cause the UE to select resources from the interactive resource set based on the indicated ordering of the resources within the first resource set.

11. The UE according to claim 10, Wherein resources up to the number of resources to be selected are selected from the highest ranking in descending order.

12. The UE according to claim 8, The physical layer of the UE determines the resources that can be used for sidelink communication, and transfers the resources that can be used for sidelink communication to the medium access control MAC layer of the UE.

13. The UE according to claim 12, The MAC layer of the UE generates the interaction resource set and performs selection of the side link resources for side link communication.

14. An apparatus for coordinating messages between user equipment devices (UE), comprising: Memory; and at least one processor in communication with the memory, wherein the at least one processor is configured to: receiving a first inter-UE coordination message from a first UE, wherein the first inter-UE coordination message includes an indication of a first resource set and an indication of whether the first resource set is a preferred resource or a non-preferred resource; selecting a sidelink resource for sidelink communication based on the first resource set indicated in the first inter-UE coordination message; receiving a second inter-UE coordination message from the first UE before reserving the selected sidelink resources, wherein the second inter-UE coordination message includes an indication of a second set of resources and an indication that the second set of resources are non-preferred resources; and Based on a comparison between the selected sidelink resources and the second set of resources, resources in the selected sidelink resources indicated as non-preferred by the second set of resources are excluded.

15. The device according to claim 14, in, When the second set of resources is a strict subset of the selected side link resources, the at least one processor is further configured to randomly select up to a number of resources required for the selection from the excluded resources.

16. The device according to claim 14, in, When the second set of resources is a strict subset of the selected sidelink resources and assistance information is provided by the first UE, the at least one processor is further configured to select up to a number of resources required for selection from the excluded resources based at least in part on the assistance information.

17. The device according to claim 16, The auxiliary information at least includes a reference signal received power RSRP for each resource in the second resource set.

18. The device according to claim 14, wherein the at least one processor is further configured to: receiving a third inter-UE coordination message from the first UE after reserving the selected sidelink resources, wherein the third inter-UE coordination message includes an indication of a third set of resources and an indication that the third set of resources are non-preferred resources; and The selected sidelink resources are excluded based on a comparison between the selected sidelink resources and the third resource set, and the resources indicated as non-preferred by the third resource set are excluded.

19. The device according to claim 18, The third inter-UE coordination message further includes auxiliary information for the third resource set.

20. A non-transitory computer readable memory medium storing program instructions, the program instructions being executable by a processing circuit to cause a user equipment device UE to: receiving a first inter-UE coordination message from a first UE, wherein the first inter-UE coordination message includes an indication of a first preferred resource or an indication of a first non-preferred resource; selecting a sidelink resource for sidelink communication based on whether the first inter-UE coordination message indicates a first preferred resource or a first non-preferred resource; receiving a second inter-UE coordination message from the first UE before reserving the selected sidelink resource, wherein the second inter-UE coordination message includes an indication of a second non-preferred resource; and The resources indicated as non-preferred by the second non-preferred resource in the selected side link resources are excluded based on the comparison between the selected side link resources and the second non-preferred resources.

21. The non-transitory computer readable memory medium of claim 20, The program instructions are further executable to: receiving a third inter-UE coordination message from the first UE after selecting the sidelink resource, wherein the third inter-UE coordination message includes an indication of a second preferred resource; and selecting resources from the second preferred resources based on interference level, wherein up to the number of required resources are selected in descending order; and The resource selected from the second preferred resources is reserved.

22. The non-transitory computer readable memory medium of claim 20, The program instructions are further executable to: receiving a third inter-UE coordination message from the first UE after selecting the sidelink resource, wherein the third inter-UE coordination message includes an indication of a second preferred resource; and Randomly selecting up to the required number of resources from the second preferred resources; and The resource selected from the second preferred resources is reserved.

23. The non-transitory computer readable memory medium of claim 20, The program instructions are further executable to: receiving a third inter-UE coordination message from the first UE after reserving the selected sidelink resource, wherein the third inter-UE coordination message includes an indication of a third non-preferred resource; and The resources indicated as non-preferred by the third non-preferred resource in the selected side link resources are excluded based on the comparison between the selected side link resources and the third non-preferred resource.

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