Method for handling inter-UE conflict and intra-UE conflict

Abstract

A method for handling inter-UE conflicts and intra-UE conflicts is provided, in which an uplink transmission of a first user equipment overlaps with a first uplink transmission of a second user equipment, and the first uplink transmission of the second user equipment overlaps with a second uplink transmission of the second user equipment. The method comprises: defining a reference cancellation area, wherein in the reference cancellation area, the uplink transmission of the first user equipment overlaps with the first uplink transmission of the second user equipment, and the first uplink transmission of the second user equipment overlaps with the second uplink transmission of the second user equipment; and determining whether one of the uplink transmission of the first user equipment, the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment is canceled based on a cancellation indication and the reference cancellation area.

Description

Technical Field

[0001] The present application relates to the field of communication systems, and in particular to a method for handling inter-UE collisions and intra-UE collisions. Background Art

[0002] Ultra-reliable low-latency communication (URLLC) is one of several different use cases supported by the 5th generation wireless system (5G) New Radio (NR) standard specified by the 3rd Generation Partnership Project (3GPP) Release 15. URLLC is a communication service used to successfully deliver data packets with strict requirements, particularly in terms of availability, latency, and reliability. URLLC will support emerging applications and services. Examples of services include wireless control and automation in industrial plant environments, vehicle-to-vehicle communication for improved safety and efficiency, and the tactile internet. This is very important for 5G, especially considering the vertically efficient support that will bring new business to the entire telecommunications industry.

[0003] One of the key features of URLLC is low latency. Low latency is crucial for applications like autonomous driving and gadgets that perform prostate surgery. Low latency allows networks to be optimized to handle incredibly large amounts of data with minimal lag (or delay). The network needs to adapt to large amounts of changing data in real time. 5G will enable this service. URLLC is the most promising complement to the upcoming 5G capabilities, but it will also be the most difficult to secure. URLLC requires a completely different quality of service (QoS) than mobile broadband services. It will provide the network with an instant and intelligent system, although it will require a transition from the core network.

[0004] This new URLLC wireless connection will guarantee a latency of 1 millisecond (ms) or less. In order for this interface to achieve low latency, all devices must be synchronized to the same time base. Time-sensitive networking is another component of 5G URLLC capabilities. This will allow shapers used to manage traffic to be time-aware.

[0005] The design of low-latency and high-reliability services involves several components: an integrated frame structure, incredibly fast turnaround, efficient control and data resource sharing, grant-free uplink transmission, and advanced channel coding schemes. The grant-free uplink structure ensures reduced latency for user equipment (UE) transmissions by avoiding the middleman process of obtaining dedicated scheduling grants.

[0006] Mechanisms for handling conflicts between more than two channels have not been fully discussed and resolved. In addition, existing solutions cannot resolve the problem when inter-UE uplink (UL) cancellations and intra-UE UL conflicts occur simultaneously. Summary of the Invention

[0007] A solution for handling the problem of inter-UE UL cancellation occurring simultaneously with intra-UE uplink collisions has not yet been concluded.

[0008] One of the objects of the present disclosure is to provide a method for handling inter-UE conflicts and intra-UE conflicts, wherein an uplink transmission of a first user equipment overlaps with a first uplink transmission of a second user equipment, and the first uplink transmission of the second user equipment overlaps with a second uplink transmission of the second user equipment, the method comprising: defining a reference cancellation area, wherein in the reference cancellation area, the uplink transmission of the first user equipment overlaps with the first uplink transmission of the second user equipment, and the first uplink transmission of the second user equipment overlaps with the second uplink transmission of the second user equipment; and determining whether one of the uplink transmission of the first user equipment, the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment is canceled based on a cancellation indication and the reference cancellation area.

[0009] Another object of the present disclosure is to provide a method for handling inter-UE conflicts and intra-UE conflicts, wherein an uplink transmission of a first user equipment overlaps with a first uplink transmission of a second user equipment, and the first uplink transmission of the second user equipment overlaps with a second uplink transmission of the second user equipment, the method comprising: defining a limit line, wherein the limit line is located before at least one symbol before an overlapping area, and the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment overlap with each other in the overlapping area; and determining whether one of the uplink transmission of the first user equipment, the first uplink transmission of the second user equipment, and the second uplink transmission of the second user equipment is canceled based on a cancellation area and the limit line, wherein the cancellation area is indicated by a cancellation indication.

[0010] The present disclosure provides a method for handling inter-UE conflicts and intra-UE conflicts to solve the problem of simultaneous occurrence of inter-UE UL cancellation and intra-UE uplink conflicts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present disclosure or related technologies, the embodiments are briefly introduced below with reference to the accompanying drawings. Obviously, the accompanying drawings are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings based on these drawings without any effort.

[0012] Figure 1 Shows inter-UE and intra-UE collisions with low priority UL transmissions.

[0013] Figure 2 A flow chart of a method for handling inter-UE contention and intra-UE contention according to an embodiment of the present disclosure is shown.

[0014] Figure 3 Displays inter-UE conflicts and intra-UE conflicts.

[0015] Figure 4 A flow chart of a method for handling inter-UE contention and intra-UE contention according to another embodiment of the present disclosure is shown.

[0016] Figure 5 Displays inter-UE conflicts and intra-UE conflicts.

[0017] Figure 6 A block diagram is shown of an example system for wireless communication according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0018] The technical content, structural features, objectives and effects of the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Specifically, the terms in the embodiments of the present disclosure are only used to illustrate the purpose of the embodiments of the present disclosure and are not used to limit the present disclosure.

[0019] Fifth-generation (5G) wireless systems are typically cellular communication systems operating in frequency range 2 (FR2), from 24.25 GHz to 52.6 GHz. Base stations (BSs) and / or user equipment (UEs) employ multiple transmit (Tx) and receive (Rx) beams to combat the large path loss in the high-frequency band. Due to hardware limitations and cost, BSs and UEs may be equipped with only a limited number of transmit and receive units (TXRUs).

[0020] See also Figure 1 , Figure 1 Displays inter-UE collisions and intra-UE collisions with low-priority UL transmissions. An inter-UE collision occurs when one UE's uplink transmission (UL) overlaps with at least one UL transmission from another UE. An intra-UE collision occurs when one UL transmission from the same UE overlaps with another UL transmission from the same UE.

[0021] exist Figure 1 In a scenario where a first UE (hereinafter referred to as "UE1") has an UL transmission that overlaps with at least one UL transmission of a second UE (hereinafter referred to as "UE2"). UE1 has a higher priority than UE2. Therefore, a base station (BS) determines to cancel the at least one UL transmission of UE2. In other words, the BS determines to cancel both UE2's UL transmission 1 and UE2's UL transmission 2.

[0022] For the conflict between the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2, it is assumed that the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 are both configured as low-priority indexes. Figure 1 In other words, the UE1 and the UE2 first resolve the overlap of inter-UE conflicts, and then the UE2 resolves the overlap of intra-UE conflicts.

[0023] See also Figure 2 as well as Figure 3 , Figure 2A flow chart of a method for handling inter-UE conflicts and intra-UE conflicts according to an embodiment of the present disclosure is shown. Figure 3 Displays inter-UE conflicts and intra-UE conflicts.

[0024] To adapt to various situations, the method for handling inter-UE and intra-UE conflicts can determine whether to handle intra-UE conflicts first based on the result of the cancellation indication. The above solution always strikes a trade-off between the latency of the protected UE and the transmission reliability of both UEs. To this end, after detecting a cancellation area, a decision is first made whether to handle the intra-UE conflict. The indication of the cancellation area can achieve optimal performance for different situations.

[0025] The relationship between overlapping scenes and the cancellation area can be summarized as follows Figure 3 The UL transmission of a first UE (hereinafter referred to as "UE1") overlaps with the UL transmission 1 of a second UE (hereinafter referred to as "UE2"), and the UL transmission 1 of the UE2 overlaps with the UL transmission 2 of the UE2. Figure 3 Potential cancellation areas are marked in the figure. Different solutions are available for different cancellation areas.

[0026] In step S30 , a reference cancellation area is defined.

[0027] In the reference cancellation region, the UL transmission of UE1 overlaps with UL transmission 1 of UE2, and UL transmission 1 of UE2 overlaps with UL transmission 2 of UE2. In one embodiment, the reference cancellation region is located between at least one symbol T1 before an overlap region and at least one symbol T2 after the overlap region. UL transmission 1 of UE2 and UL transmission 2 of UE2 overlap in the overlap region.

[0028] When the reference cancellation region is the same as the overlap region between UL transmission 1 of UE2 and UL transmission 2 of UE2, UE2 does not have sufficient time to decide whether to perform a multiplexing operation, and therefore requires a buffer time. The values of the symbols T1 and T2 can be configured by higher layers or calculated based on UE processing time. The symbols T1 and T2 are integers and are not less than zero.

[0029] In step S32 , it is determined whether one of the UL transmission of the UE1 , the UL transmission 1 of the UE2 , and the UL transmission 2 of the UE2 is cancelled according to a cancellation indication and the reference cancellation region.

[0030] It should be noted that at least group common downlink control indication (group common DCI) for the cancellation indication is supported, and the cancellation indication is configured by a higher layer.

[0031] like Figure 3 As shown, when the cancellation indication is configured to cancel UL transmission in cancellation area 1, the UL transmission 1 of the UE 2 should be discarded. The cancellation area 1 is located before the start position of the reference cancellation area.

[0032] However, several situations should be considered. When the cancellation indication is configured to cancel the UL transmission in the cancellation area 1 and both the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 meet a multiplexing timeline condition, a multiplexing process can be performed at the location of the UL transmission 2 of the UE2 to check whether the UL transmission 1 of the UE2 can be multiplexed with the UL transmission 2 of the UE2. When the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 are multiplexed, the UL transmission of the UE1 and the multiplexing of the UL transmission of the UE2 and the UL transmission of the UE2 can all be transmitted. Therefore, the cancellation process is ignored. In other words, the UL transmission of the UE1, the UL transmission of the UE2, and the UL transmission 1 of the UE2 are not canceled.

[0033] On the other hand, when at least one of UE2's UL transmission 1 and UE2's UL transmission 2 does not meet the multiplexing timeline condition (i.e., multiplexing is unavailable), a priority mechanism should be used to discard one of UE2's UL transmission 1 and UE2's UL transmission 2. However, prior information regarding the location of the cancellation area (cancellation area 1) is provided. UL transmissions in cancellation area 1 should be discarded without fail (except for UL transmissions that cannot be canceled by UL CI). As described above, when at least one of UE2's UL transmission 1 and UE2's UL transmission 2 does not meet the multiplexing timeline condition, UE2's UL transmission 1 should be discarded without fail. If UE2's UL transmission 2 is discarded based on prioritization rules for intra-UE conflicts, this result can be modified. That is, UL transmissions in cancellation area 1 are always canceled, rather than implementing the prioritization rules for intra-UE conflicts.

[0034] like Figure 3 As shown, when the cancellation indication is configured to cancel the UL transmission in the reference cancellation area, the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 are canceled.

[0035] When the cancellation indication is configured to cancel the UL transmission in the reference cancellation area, this means that inter-UE conflicts and intra-UE conflicts occur simultaneously. In this case, there is no need to check whether the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 do not meet the multiplexing timeline condition. In more detail, regardless of whether they can be multiplexed, the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 are both canceled. In addition, regardless of which of the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 can be retained, the priority mechanism for intra-UE conflicts is also useless. The UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 will be canceled by the cancellation indication. In order to improve system efficiency, conflicts between UEs must be handled first.

[0036] like Figure 3 As shown, when the cancellation indication is configured to cancel UL transmission in cancellation area 2, the UL transmission 2 of UE 2 should be discarded. The cancellation area 2 is located after the end position of the reference cancellation area.

[0037] However, several cases should be considered. First, when the cancellation indication is configured to cancel the UL transmission in the cancellation area 2 and both the UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 meet the multiplexing timeline condition exactly in the cancellation area 2, since the multiplexing operation needs to be performed at the position of the UL transmission 2 of the UE2, no multiplexing judgment is required. Regarding the priority procedure, a priori information of the position of the cancellation area (the cancellation area 2) is provided. Undoubtedly, the UL transmission in the cancellation area 2 should be discarded (except for the UL transmission that cannot be canceled by the UL CI). In Figure 3 In this case, UL transmission 2 of UE 2 should be canceled without any doubt. If UL transmission 1 is discarded according to the priority rule for intra-UE conflicts, this result can be changed. That is, UL transmissions in cancellation zone 2 are always canceled, rather than enforcing the priority rule for intra-UE conflicts.

[0038] From the above, it can be seen that how to handle inter-UE conflicts and intra-UE conflicts can be determined by the location of the cancellation area. The priority mechanism for intra-UE conflicts can take into account the location of the cancellation area for inter-UE conflicts. When inter-UE conflicts and intra-UE conflicts are in the same area ( Figure 3When the inter-UE conflict and the intra-UE conflict overlap in the same area ( Figure 3 Intra-UE conflicts should be handled first when the cancellation areas 1 or 3 in the cancellation indication do not overlap. However, the multiplexing and priority mechanism should take into account the location of the cancellation area configured by the higher layer. When the cancellation area indicated by the cancellation indication is located at the beginning of the UL transmission configured for cancellation, it is necessary to check whether the UL transmission configured for cancellation meets the multiplexing timeline condition. For other cases, the priority mechanism can use the location of the cancellation area as a priori information. When it is determined to discard the UL transmission that is not in the cancellation area, the discard decision can be switched. That is, the UL transmission in the cancellation area is cancelled, and the UL transmission that is not in the cancellation area is not cancelled. In summary, if Figure 3 In the example shown, when the cancellation area configured by the higher layer is within the reference cancellation area, the inter-UE conflict is handled first. Otherwise, the intra-UE conflict is handled first based on the location of the cancellation area.

[0039] See also Figure 4 as well as Figure 5 , Figure 4 A flow chart showing a method for handling inter-UE conflicts and intra-UE conflicts according to another embodiment of the present disclosure is shown. Figure 5 Displays inter-UE conflicts and intra-UE conflicts.

[0040] like Figure 5 As shown, the UL transmission of the first UE (hereinafter referred to as "UE1") overlaps with the UL transmission 1 of the second UE (hereinafter referred to as "UE2"), and the UL transmission 1 of the UE2 overlaps with the UL transmission 2 of the UE2.

[0041] In step S50 , a limit line is defined.

[0042] In one embodiment, the limit line is located before at least one symbol T3 before an overlap region. The UL transmission 1 of the UE2 and the UL transmission 2 of the UE2 overlap each other in the overlap region. The symbol T3 is an integer and not less than zero.

[0043] In step S52 , it is determined whether one of the UL transmission of the UE1 , the UL transmission 1 of the UE2 , and the UL transmission 2 of the UE2 is cancelled according to a cancellation region and the limit line.

[0044] It should be noted that at least group common downlink control information (DCI) for the cancellation indication is supported, and the cancellation indication is configured by a higher layer. The cancellation region is indicated by the cancellation indication.

[0045] When the cancellation area is before the limit line, intra-UE collision is handled first.

[0046] In more detail, when the cancellation region is before the limit line, the UL transmission 1 of the UE 2 should be discarded.

[0047] However, several situations should be considered. When the cancellation region is before the limit line and both UE2's UL transmission 1 and UE2's UL transmission 2 meet a multiplexing timeline condition, a multiplexing process can be performed at the location of UE2's UL transmission 2 to check whether UE2's UL transmission 1 can be multiplexed with UE2's UL transmission 2. When UE2's UL transmission 1 and UE2's UL transmission 2 are multiplexed, both UE1's UL transmission and the multiplexing of UE2's UL transmission and UE2's UL transmission can be transmitted. Therefore, the cancellation process is ignored. That is, UE1's UL transmission, UE2's UL transmission 1, and UE2's UL transmission 1 are not canceled.

[0048] On the other hand, when at least one of UE2's UL transmission 1 and UE2's UL transmission 2 does not satisfy the multiplexing timeline condition (i.e., multiplexing is unavailable), a priority mechanism should be used to discard one of UE2's UL transmission 1 and UE2's UL transmission 2. However, a priori information regarding the location of the cancellation region before the limit line is provided. UL transmissions before the limit line should undoubtedly be discarded (except for UL transmissions that cannot be canceled by UL CI). As described above, when at least one of UE2's UL transmission 1 and UE2's UL transmission 2 does not satisfy the multiplexing timeline condition, UE2's UL transmission 1 should undoubtedly be canceled. In the event that UE2's UL transmission 2 is discarded according to a priority rule for intra-UE conflicts, this result can be changed. That is, UL transmissions in cancellation region 1 are always canceled, rather than executing the priority rule for intra-UE conflicts.

[0049] When the cancellation region is behind the limit line, inter-UE collisions are handled first.

[0050] More specifically, when the cancellation area is after the limit line, this means that inter-UE conflicts and intra-UE conflicts occur simultaneously. In this case, there is no need to check whether the UL transmission 1 of UE2 and the UL transmission 2 of UE2 do not meet the multiplexing timeline condition. More specifically, regardless of whether multiplexing is possible, the UL transmission 1 of UE2 and the UL transmission 2 of UE2 are both canceled. In addition, regardless of which of the UL transmission 1 of UE2 and the UL transmission 2 of UE2 can be retained, the priority mechanism for intra-UE conflicts is also useless. The UL transmission 1 of UE2 and the UL transmission 2 of UE2 will be canceled by the cancellation indication. In order to improve system efficiency, inter-UE conflicts must first be handled.

[0051] Please refer to Figure 6 , Figure 6 A block diagram is shown of an example system 700 for wireless communication according to an embodiment of the present disclosure. The embodiments described herein may be implemented into a system using any suitably configured hardware and / or software. Figure 6 Display system 700 includes radio frequency (RF) circuitry 710, baseband circuitry 720, a processing unit 730, memory / storage 740, a display 750, a camera 760, a sensor 770, and an input / output (I / O) interface 780, which are coupled to each other as shown.

[0052] The processing unit 730 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processors may include any combination of general-purpose processors and dedicated processors, such as graphics processors and application processors. The processors may be coupled to memory / storage and configured to execute instructions stored in the memory / storage to enable various applications and / or operating systems running on the system.

[0053] The baseband circuitry 720 may include circuitry, such as, but not limited to, one or more single-core or multi-core processors. The processor may include a baseband processor. The baseband circuitry may handle various radio control functions that enable communication with one or more radio networks via RF circuitry. Radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, and the like. In some embodiments, the baseband circuitry may provide communications compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry may support communications with 5G NR, LTE, Evolved Universal Terrestrial Radio Access Network (EUTRAN) and / or other wireless metropolitan area networks (WMANs), wireless local area networks (WLANs), and wireless personal area networks (WPANs). An embodiment in which the baseband circuitry is configured to support radio communications using more than one wireless protocol may be referred to as a multimode baseband circuitry. In various embodiments, the baseband circuitry 720 may include circuitry that operates with signals that are not strictly considered to be at baseband frequencies. For example, in some embodiments, baseband circuitry may include circuitry that operates with signals having an intermediate frequency that is between the baseband frequency and the radio frequency.

[0054] RF circuitry 710 can enable communication with a wireless network using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry can include switches, filters, amplifiers, and the like to facilitate communication with the wireless network. In various embodiments, the RF circuitry 710 can include circuitry that operates with signals that are not strictly considered to be in the radio frequency range. For example, in some embodiments, the RF circuitry can include circuitry that operates with signals having an intermediate frequency (IF) between the baseband frequency and the radio frequency.

[0055] In various embodiments, the transmitter circuitry, control circuitry, or receiver circuitry discussed above with respect to a UE, eNB, or gNB may be embodied in whole or in part in RF circuitry, baseband circuitry, and / or a processing unit. As used herein, "circuitry" may refer to, pertain to, or include an application-specific integrated circuit (ASIC), electronic circuitry, a processor (shared, dedicated, or group), and / or memory (shared, dedicated, or group) executing one or more software or firmware programs, combinational logic circuitry, and / or other suitable hardware components that provide the described functionality. In some embodiments, electronic device circuitry may be implemented in one or more software or firmware modules, or the functionality associated with the circuitry may be implemented by one or more software or firmware modules. In some embodiments, some or all of the baseband circuitry, processing unit, and / or memory / memory components may be implemented together on a system on a chip (SOC).

[0056] Memory / storage 740 can be used for loading and storing data and / or instructions, for example, for a system.Memory / storage for an embodiment can include any combination of suitable volatile memory such as dynamic random access memory (DRAM) and / or non-volatile memory (non-volatile memory) such as flash memory. In various embodiments, I / O interface 780 can include one or more user interfaces designed to enable a user to interact with the system and / or be designed to enable peripheral components to interact with the system. The user interface can include but is not limited to a physical keyboard or keypad, a touchpad, a speaker, a microphone, etc. The peripheral component interface can include but is not limited to a non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power interface.

[0057] In various embodiments, sensor 770 may include one or more sensing devices to determine environmental conditions and / or location information related to the system. In some embodiments, sensors may include, but are not limited to, gyroscope sensors, accelerometers, proximity sensors, ambient light sensors, and positioning units. The positioning unit may also be part of or interact with baseband circuitry and / or RF circuitry to communicate with components of a positioning network, such as global positioning system (GPS) satellites. In various embodiments, display 750 may include a display device, such as a liquid crystal display and a touch screen display. In various embodiments, system 700 may be a mobile computing device, such as, but not limited to, a laptop, tablet, netbook, ultrabook, smartphone, etc. In various embodiments, the system may have more or fewer components and / or different architectures. Where appropriate, the methods described herein may be implemented as computer programs. The computer programs may be stored on a storage medium, such as a non-transitory storage medium.

[0058] The embodiments of the present disclosure are a combination of techniques / processes that can be adopted in the 3GPP specifications to create a final product.

[0059] Those skilled in the art will appreciate that the various units, algorithms, and steps described and disclosed in the embodiments of the present disclosure are implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the function is executed in hardware or software depends on the application conditions and the design requirements of the technical solution. Those skilled in the art may use different methods to implement the functions for each specific application, but such implementation should not exceed the scope of this disclosure. Those skilled in the art will appreciate that the working processes of the above-mentioned systems, devices, and units can refer to the working processes of the systems, devices, and units in the above-mentioned embodiments. The units are basically the same. For ease of description and simplicity, these working processes will not be described in detail.

[0060] It is understood that the systems, devices, and methods disclosed in the embodiments of the present disclosure may be implemented in other ways. The above embodiments are merely exemplary. The division of units is based solely on logical functions, and other divisions exist in the implementation. Multiple units or components may be combined or integrated into another system. It is also possible to omit or skip certain features. On the other hand, the mutual coupling, direct coupling, or communication coupling shown or discussed operates through some ports, devices, or units, whether indirectly or through electrical, mechanical, or other types of communication.

[0061] Units used as separate components for illustration may or may not be physically separate. Units used for display may or may not be physical units, i.e., located in one place or distributed across multiple network units. Some or all of these units may be used depending on the purpose of the embodiment. Furthermore, the various functional units in various embodiments may be integrated into a single processing unit, or may be physically independent, or may consist of two or more units integrated into a single processing unit.

[0062] If the software functional unit is implemented, used and sold as a product, it can be stored in a readable storage medium in a computer. Based on this understanding, the technical solution proposed in the present disclosure can be implemented basically or partially in the form of a software product. Alternatively, a part of the technical solution that is advantageous to the prior art can be implemented in the form of a software product. The software product in the computer is stored in a storage medium and includes multiple commands for a computing device (such as a personal computer, a server or a network device) to run all or part of the steps disclosed in the embodiment of the present disclosure. The storage medium includes a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a floppy disk or other medium capable of storing program code.

[0063] The disclosed method provides flexible QoS management based on the sidelink traffic type. According to the present disclosure, the sidelink transmission of each traffic type can have a configurable priority to meet different communication situations and QoS requirements.

[0064] While the present disclosure has been described in connection with what is considered to be the most practical and preferred embodiment, it should be understood that the present disclosure is not limited to the disclosed embodiment, but is intended to cover various arrangements that can be made without departing from the scope thereof, given the broadest interpretation of the appended claims.

Claims

1. A method for handling inter-UE and intra-UE conflicts, wherein an uplink transmission of a first user equipment overlaps with a first uplink transmission of a second user equipment, and the first uplink transmission of the second user equipment overlaps with a second uplink transmission of the second user equipment, characterized in that: The method comprises: defining a reference cancellation region, wherein in the reference cancellation region, the uplink transmission of the first user equipment overlaps with the first uplink transmission of the second user equipment, the first uplink transmission of the second user equipment overlaps with the second uplink transmission of the second user equipment, and the reference cancellation region is located between at least one symbol before and at least one symbol after an overlapping region, and the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment overlap with each other in the overlapping region; and It is determined whether one of the uplink transmission of the first user equipment, the first uplink transmission of the second user equipment, and the second uplink transmission of the second user equipment is canceled according to a cancellation indication and the reference cancellation region.

2. The method according to claim 1, characterized in that At least group common downlink control information for the cancellation indication is supported.

3. The method according to claim 2, characterized in that The cancellation indication is configured by a higher layer.

4. The method according to claim 1, wherein When the cancellation indication is configured to cancel uplink transmission in a first cancellation area, first processing the intra-UE conflict; The first cancellation area is located before the start position of the reference cancellation area.

5. The method according to claim 4, characterized in that The first uplink transmission of the second user equipment is discarded.

6. The method according to claim 4, characterized in that When both the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment meet a multiplexing timeline condition, a multiplexing process is performed to check whether the first uplink transmission of the second user equipment can be multiplexed with the second uplink transmission of the second user equipment.

7. The method according to claim 6, characterized in that The multiplexing process is performed at a location of the second uplink transmission of the second user equipment.

8. The method according to claim 1, characterized in that When the cancellation indication is configured to cancel uplink transmission in the reference cancellation area, inter-UE collision is handled first.

9. The method according to claim 8, characterized in that The first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment are both canceled.

10. The method according to claim 1, characterized in that When the cancellation indication is configured to cancel uplink transmission in a second cancellation area, firstly handling intra-UE conflict; The second cancellation area is located after the end position of the reference cancellation area.

11. The method according to claim 10, characterized in that The second uplink transmission of the second user equipment is dropped.

12. The method according to claim 1, characterized in that When the uplink transmission of the first user equipment overlaps with the second uplink transmission of the second user equipment and the second user equipment is configured as a low priority index, cancel at least one of the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment indicated by the cancellation indication.

13. A method for handling inter-UE and intra-UE conflicts, wherein an uplink transmission of a first user equipment overlaps with a first uplink transmission of a second user equipment, and the first uplink transmission of the second user equipment overlaps with a second uplink transmission of the second user equipment, characterized in that: The method comprises: defining a limit line, wherein the limit line is located before at least one symbol before an overlap region, and the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment overlap with each other in the overlap region; and Whether one of the uplink transmission of the first user equipment, the first uplink transmission of the second user equipment, and the second uplink transmission of the second user equipment is canceled is determined based on a cancellation area and the limit line, wherein the cancellation area is indicated by a cancellation indication.

14. The method according to claim 13, characterized in that At least group common downlink control information for the cancellation indication is supported.

15. The method according to claim 14, characterized in that The cancellation indication is configured by a higher layer.

16. The method according to claim 13, characterized in that When the cancellation area is before the limit line, intra-UE collision is handled first.

17. The method according to claim 16, characterized in that The first uplink transmission of the second user equipment is discarded.

18. The method according to claim 16, characterized in that When both the first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment meet a multiplexing timeline condition, a multiplexing process is performed to check whether the first uplink transmission of the second user equipment can be multiplexed with the second uplink transmission of the second user equipment.

19. The method according to claim 18, characterized in that The multiplexing process is performed at a location of the second uplink transmission of the second user equipment.

20. The method according to claim 13, wherein When the cancellation region is behind the limit line, inter-UE collisions are handled first.

21. The method according to claim 20, characterized in that The first uplink transmission of the second user equipment and the second uplink transmission of the second user equipment are both canceled.

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