EP-4742708-A2 - DEVICE, METHOD, AND COMPUTER READABLE STORAGE MEDIUM FOR TRANSMITTING AND RECEIVING INFORMATION FOR COMMUNICATION IN UNLICENCED BAND

Abstract

According to various embodiments, a first user equipment (UE) includes a memory; a transceiver to transmit and receive a wireless signal; and a processor connected with the memory and the transceiver, wherein the processor is configured to determine to perform communication through a sidelink on unlicensed band with a second UE while the first UE is in a state which is out of coverage of a base station, based on the determination, identify pre-configuration information stored in the memory, obtain a priority threshold value for the sidelink on the unlicensed band from the pre-configuration information, and determine, based on the priority threshold value, whether to transmit data through the sidelink on the unlicensed band with the second UE.

Inventors

• KANG, JEOUNGKYU
• KIM, DAEWON
• HAN, TAEKYU

Assignees

• Thinkware Corporation

Dates

Publication Date

20260513

Application Date

20220824

Claims (15)

1. A first user equipment (UE) comprising: memory; a transceiver configured to transmit and receive a wireless signal; and a processor operably coupled with the memory and the transceiver, wherein the processor is configured to: determine that the first UE is out of a coverage of a base station, in response to the determination, identify pre-configuration information stored in the memory, identify, based on the pre-configuration information, information on available frequency resources for sidelink communication through a shared spectrum, and establish, based on the information on the available frequency resources, sidelink communication with a second UE.
2. The first UE of claim 1, wherein the memory comprises universal integrated circuit card (UICC), and wherein the information on the available frequency resources is pre-configured in the UICC.
3. The first UE of claim 1, wherein the information on the available frequency resources comprises: information on a search frequency list, and information on an anchor carrier frequency.
4. The first UE of claim 3, wherein the information on the search frequency list includes one or more frequency resources allowed for performing the sidelink communication with the second UE.
5. The first UE of claim 4, wherein the information on the anchor carrier frequency indicates a carrier on which configuration information for the search frequency list is transmitted.
6. The first UE of claim 5, wherein the processor is configured to: receive, through the carrier indicated by the information on the anchor carrier frequency, the configuration information from the second UE, determine, based on the configuration information, a frequency resource to communicate with the second UE among the one or more frequency resources included in the information on the search frequency list, and establish, based on the determined frequency resource, the sidelink communication with the second UE.
7. The first UE of claim 1, wherein the shared spectrum includes 5.9 GHz band.
8. A method performed by a first UE comprising memory, comprising: determining that the first UE is out of a coverage of a base station, in response to the determination, identifying pre-configuration information stored in the memory, identifying, based on the pre-configuration information, information on available frequency resources for sidelink communication through a shared spectrum, and establishing, based on the information on the available frequency resources, sidelink communication with a second UE.
9. The method of claim 8, wherein the memory comprises universal integrated circuit card (UICC), and wherein the information on the available frequency resources is pre-configured in the UICC.
10. The method of claim 8, wherein the information on the available frequency resources comprises: information on a search frequency list, and information on an anchor carrier frequency.
11. The method of claim 10, wherein the information on the search frequency list includes one or more frequency resources allowed for performing the sidelink communication with the second UE.
12. The method of claim 11, wherein the information on the anchor carrier frequency indicates a carrier on which configuration information for the search frequency list is transmitted.
13. The method of claim 12, wherein the method comprises: receiving, through the carrier indicated by the information on the anchor carrier frequency, the configuration information from the second UE, determining, based on the configuration information, a frequency resource to communicate with the second UE among the one or more frequency resources included in the information on the search frequency list, and establishing, based on the determined frequency resource, the sidelink communication with the second UE.
14. The method of claim 8, wherein the shared spectrum includes 5.9 GHz band.
15. A computer readable storage medium storing one or more programs, wherein the one or more programs comprise instructions which, when executed by a processor of a first user equipment (UE) with memory, cause the first UE to: determine that the first UE is out of a coverage of a base station, in response to the determination, identify pre-configuration information stored in the memory, identify, based on the pre-configuration information, information on available frequency resources for sidelink communication through a shared spectrum, and establish, based on the information on the available frequency resources, sidelink communication with a second UE.

Description

BACKGROUND Technical Field The following descriptions relate to a device, a method, and a computer readable storage medium for transmitting and receiving information for communication in an unlicensed band. Description of Related Art After the first generation mobile communication, in which only voice signals are transmitted and received in the past, mobile communication has evolved to the present fifth generation (hereinafter referred to as 5G) mobile communication. The 5G mobile communication technology has been developed with the goal of enhanced mobile broadband (eMBB), ultra-reliable & low latency communication (URLLC), and machine-type communications (mMTC). Currently, development for system network improvement is in progress based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-point (CoMP) transmission and reception, interference mitigation and cancellation, and the like. 5G mobile communication technology is a new radio access technology (RAT) and is referred to NR (new radio). NR may support vehicle to everything (V2X) communication (i.e., C(Cellular)-V2X communication). V2X is a communication technology that exchanges information between pedestrians, objects, and vehicles through wired/wireless communication. V2X may be divided into various types. Specifically, V2X may be divided into types of vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to network (V2N), and vehicle to pedestrian (V2P). V2V refers to communication between a vehicle and a vehicle, V2I refers to communication between a vehicle and an infrastructure, V2N refers to communication between a vehicle and a network, and V2P refers to communication between a vehicle and a pedestrian. SUMMARY For C (Cellular)-V2X communication, discussion for the integrity (or URLLC) of the communication connection is currently in progress, but the procedure for securing the amount of transmitted data (or the amount of received data) is not defined. Accordingly, a method for securing the amount of data may be required. The spectrum for C-V2X communication (i.e., licensed band) and unlicensed band are set separately, and most of the signal exchange during C-V2X communication take place in the licensed band, but an error in communication and a sharp drop in reliability may occur due to an external obstacle or the like. C-V2X communication is basically communication between a vehicle and an object, and reliability and low latency of a signal may be essentially required. The need to use an unlicensed band in C-V2X communication may be required. When the user equipment is located outside the coverage of the base station, the user equipment must allocate resources for performing C-V2X communication with other user equipment. When the user equipment is located within the coverage of the base station, resources may be allocated from the base station, but when the user equipment is located outside the coverage of the base station, resources may not be allocated from the base station. Accordingly, when the user equipment is located outside the coverage of the base station, various information needs to be pre-configured to perform C-V2X communication (or sidelink communication) through the unlicensed band. The technical problems to be achieved in this document are not limited to those described above, and other technical problems not mentioned herein will be clearly understood by those having ordinary knowledge in the art to which the present disclosure belongs, from the following description. According to various embodiments, a first user equipment (UE) may comprise a memory; a transceiver to transmit and receive a wireless signal; and a processor connected with the memory and the transceiver, wherein the processor may be configured to determine to perform communication through a sidelink on unlicensed band with a second UE while the first UE is in a state which is out of coverage of a base station, based on the determination, identify pre-configuration information stored in the memory, obtain a priority threshold value for the sidelink on the unlicensed band from the pre-configuration information, and determine, based on the priority threshold value, whether to transmit data through the sidelink on the unlicensed band with the second UE. According to various embodiments, a first user equipment (UE) may comprise a memory; a transceiver to transmit and receive a wireless signal; and a processor connected with the memory and the transceiver, wherein the processor may be configured to identify pre-configuration information stored in the memory while the first UE is in a state which is out of coverage of a base station, identify a search frequency list and an anchor carrier on unlicensed band from the pre-configuration information, and establish, based on the search frequency list and the anchor carrie