KR-102962432-B1 - METHOD, COMMUNIDATION DEVICE AND STORAGE MEDIUM FOR TRANSMITTING SIDELINK CHANNEL, AND METHOD, COMMUNICATION AND STORAGE MEDIUM FOR RECEIVING SIDELINK CHANNEL

KR102962432B1KR 102962432 B1KR102962432 B1KR 102962432B1KR-102962432-B1

Abstract

A PSCCH carrying information regarding the subchannels of a PSSCH in SCI format is mapped to and transmitted to one of the subchannels within the resource pool. Based on the fact that the number of resource blocks available for transmission within the subchannel of the lowest index among the subchannels of the PSSCH is less than a preset number, the said PSCCH is mapped to an adjacent subchannel other than the subchannel of the lowest index.

Inventors

김태형

Assignees

현대모비스 주식회사

Dates

Publication Date: 20260511
Application Date: 20230406

Claims (16)

In a wireless communication system, when a communication device transmits a sidelink channel, Determine the subchannels of the physical sidelink shared channel (PSSCH) within the resource pool for the sidelink; A physical sidelink control channel (PSCCH) carrying a sidelink control information (SCI) format containing information regarding the above subchannels is mapped to one of the subchannels in the resource pool; Mapping the above PSSCH within the above subchannels for the transmission of the above PSSCH; and It includes transmitting the above PSCCH and the above PSSCH over subchannels to which the above PSCCH and the above PSSCH are mapped, Mapping the above PSCCH to one of the above subchannels within the above resource pool is: Based on the fact that the number of resource blocks (RBs) available for transmission within the subchannel of the lowest index among the subchannels of the PSSCH is smaller than a preset number, the method comprises mapping the PSCCH to an adjacent subchannel other than the subchannel of the lowest index of the PSSCH. Sidelink channel transmission method.
In paragraph 1, Mapping the above PSCCH to one of the above subchannels within the above resource pool is: Based on the fact that the number of RBs available for transmission within the subchannel of the lowest index among the subchannels of the PSSCH is not less than a preset number, the method comprising mapping the PSCCH to the subchannel of the lowest index of the PSSCH. Sidelink channel transmission method.
In paragraph 1, The above-mentioned preset number is N sch set for the above-mentioned resource pool, where N sch is the number of consecutive RBs within each subchannel, Sidelink channel transmission method.
In paragraph 1, The above preset number is N PSCCH set for the resource pool, where N PSCCH is the number of RBs for PSCCH transmission within the resource pool, Sidelink channel transmission method.
In paragraph 1, The above SCI format includes start subchannel information regarding the subchannel of the lowest index of the above PSSCH, Sidelink channel transmission method.
In paragraph 5, The above starting subchannel information includes information regarding whether the subchannel mapped to the above PSCCH is the subchannel of the lowest index of the above PSSCH, Sidelink channel transmission method.
In a wireless communication system, when a communication device receives a sidelink channel, Receiving a physical sidelink control channel (PSCCH) carrying a sidelink control information (SCI) format regarding subchannels of a physical sidelink shared channel (PSSCH) from a subchannel within a resource pool for a sidelink; and It includes receiving the PSSCH on the subchannels of the PSSCH based on the above SCI format, and Based on the fact that the number of resource blocks (RBs) available for transmission within the subchannel of the lowest index among the subchannels of the above PSSCH is smaller than a preset number, the subchannel where the above PSCCH was received is different from the subchannel of the lowest index of the above PSSCH, How to receive Sidelink channels.
In Paragraph 7, Based on the fact that the number of RBs available for transmission within the subchannel of the lowest index among the subchannels of the above PSSCH is not less than a preset number, the subchannel where the above PSCCH was received is identical to the subchannel of the lowest index of the above PSSCH, How to receive Sidelink channels.
In Paragraph 7, The above-mentioned preset number is N sch set for the above-mentioned resource pool, where N sch is the number of consecutive RBs within each subchannel, How to receive Sidelink channels.
In Paragraph 7, The above preset number is N PSCCH set for the resource pool, where N PSCCH is the number of RBs for PSCCH transmission within the resource pool, How to receive Sidelink channels.
In Paragraph 7, The above SCI format includes start subchannel information regarding the subchannel of the lowest index of the above PSSCH, How to receive Sidelink channels.
In Paragraph 11, The above-mentioned starting subchannel information includes information regarding whether the subchannel in which the PSCCH was received is the subchannel of the lowest index of the PSSCH. How to receive Sidelink channels.
In a wireless communication system, when a communication device transmits a sidelink channel, At least one transmitter/receiver; At least one processor; and It includes at least one memory connected to the at least one processor so as to be operable, and storing instructions that cause the at least one processor to perform operations when executed, and the operations are: Determine the subchannels of the physical sidelink shared channel (PSSCH) within the resource pool for the sidelink; A physical sidelink control channel (PSCCH) carrying a sidelink control information (SCI) format containing information regarding the above subchannels is mapped to one of the subchannels in the resource pool; Mapping the above PSSCH within the above subchannels for the transmission of the above PSSCH; and It includes transmitting the above PSCCH and the above PSSCH over subchannels to which the above PSCCH and the above PSSCH are mapped, Mapping the above PSCCH to one of the above subchannels within the above resource pool is: Based on the fact that the number of resource blocks (RBs) available for transmission within the subchannel of the lowest index among the subchannels of the PSSCH is smaller than a preset number, the method comprises mapping the PSCCH to an adjacent subchannel other than the subchannel of the lowest index of the PSSCH. Communication device.
A computer-readable non-transitory storage medium comprising at least one computer program that causes at least one processor to perform operations, wherein the operations are: Determine the subchannels of the physical sidelink shared channel (PSSCH) within the resource pool for the sidelink; A physical sidelink control channel (PSCCH) carrying a sidelink control information (SCI) format containing information regarding the above subchannels is mapped to one of the subchannels in the resource pool; Mapping the above PSSCH within the above subchannels for the transmission of the above PSSCH; and It includes transmitting the above PSCCH and the above PSSCH over subchannels to which the above PSCCH and the above PSSCH are mapped, Mapping the above PSCCH to one of the above subchannels within the above resource pool is: Based on the fact that the number of resource blocks (RBs) available for transmission within the subchannel of the lowest index among the subchannels of the PSSCH is smaller than a preset number, the method comprises mapping the PSCCH to an adjacent subchannel other than the subchannel of the lowest index of the PSSCH. Storage medium.
In a wireless communication system, when a communication device receives a sidelink channel, At least one transmitter/receiver; At least one processor; and It includes at least one memory connected to the at least one processor so as to be operable, and storing instructions that cause the at least one processor to perform operations when executed, and the operations are: Receiving a physical sidelink control channel (PSCCH) carrying a sidelink control information (SCI) format regarding subchannels of a physical sidelink shared channel (PSSCH) from a subchannel within a resource pool for a sidelink; and It includes receiving the PSSCH on the subchannels of the PSSCH based on the above SCI format, and Based on the fact that the number of resource blocks (RBs) available for transmission within the subchannel of the lowest index among the subchannels of the above PSSCH is smaller than a preset number, the subchannel where the above PSCCH was received is different from the subchannel of the lowest index of the above PSSCH, Communication device.
A computer-readable non-transitory storage medium comprising at least one computer program that causes at least one processor to perform operations, wherein the operations are: Receiving a physical sidelink control channel (PSCCH) carrying a sidelink control information (SCI) format regarding subchannels of a physical sidelink shared channel (PSSCH) from a subchannel within a resource pool for a sidelink; and It includes receiving the PSSCH on the subchannels of the PSSCH based on the above SCI format, and Based on the fact that the number of resource blocks (RBs) available for transmission within the subchannel of the lowest index among the subchannels of the above PSSCH is smaller than a preset number, the subchannel where the above PSCCH was received is different from the subchannel of the lowest index of the above PSSCH, Storage medium.

Description

Method for transmitting a sidelink channel, communication device and storage medium, and method for receiving a sidelink channel, communication device and storage medium This specification relates to a wireless communication system. Various devices and technologies, such as machine-to-machine (M2M) communication, machine type communication (MTC), and devices requiring high data transmission rates like smartphones and tablet PCs (Personal Computers), are emerging and becoming widespread. Consequently, the amount of data required to be processed in cellular networks is increasing very rapidly. To satisfy this rapidly increasing demand for data processing, technologies such as carrier aggregation and cognitive radio are being developed to efficiently utilize more frequency bands, while technologies such as multi-antenna technology and multi-base station (BS) cooperation are being developed to increase the data capacity transmitted within a limited frequency range. Wireless communication systems support communication among user equipment (UEs) by utilizing available system resources (e.g., bandwidth, transmission power, etc.). With the introduction of new wireless communication technologies, not only is the number of UEs that a base station (BS) must service within a given resource area increasing, but the amount of data and control information transmitted and received by the BS with the UEs it services is also increasing. Since the amount of wireless resources available to the BS for communication with UE(s) is finite, a new method is required for the BS to efficiently receive and transmit uplink/downlink data and/or uplink/downlink control information from/to the UE(s) using these finite wireless resources. In other words, as the density of nodes and/or UEs increases, a method has been required to efficiently utilize high-density nodes or high-density UEs for communication. For example, as a solution to the burden on BS caused by rapidly increasing data traffic, sidelink (SL) communication, which supports direct communication between two or more nearby UEs without passing through network nodes using wireless communication technology, has been studied. With the emergence of the need for V2X (vehicle-to-everything), a communication technology that supports wired/wireless communication between a vehicle and other vehicles, infrastructure, networks, or pedestrians, a rapid increase in SL communication is expected. FIG. 1 is an example of a communication system 1 to which implementations of the present specification may be applied; FIG. 2 is a block diagram illustrating examples of communication devices capable of performing the method according to the present specification; FIG. 3 illustrates an example of a frame structure available in a 3GPP-based wireless communication system; FIG. 4 illustrates a resource grid of slots; FIG. 5 illustrates communication links in a wireless communication system; FIG. 6 is illustrated to explain the frequency and time resources for the side link; FIGS. 7 and 8 illustrate the transmission structure of physical channels within a slot; FIG. 9 illustrates a resource block (RB) interlacing; FIG. 10 illustrates interlaced RB-based uplink resource allocation in a shared spectrum; FIG. 11 shows examples of resource pool structures in the frequency domain for sidelink transmission over a shared spectrum; FIG. 12 illustrates examples of PSCCH/PSSCH transmission according to some implementations of the present specification; FIG. 13 illustrates examples of sidelink transmission over a shared spectrum having guard bands; FIGS. 14 through 16 illustrate examples of PSCCH transmission according to some implementations of the present specification; FIG. 17 illustrates part of the process in which a communication device performs a sidelink transmission according to some implementations of the present specification; FIG. 18 illustrates part of the process in which a communication device performs sidelink reception according to some implementations of the present specification. Implementations according to this specification are described below with reference to the accompanying drawings. The detailed description disclosed below, together with the accompanying drawings, is intended to describe exemplary implementations of this specification and is not intended to represent the only form in which this specification may be practiced. The detailed description below includes specific details to provide a complete understanding of this specification. However, those skilled in the art will know that this specification may be practiced without such specific details. In some cases, to avoid ambiguity regarding the concepts of this specification, known structures and devices may be omitted or illustrated in the form of block diagrams focusing on the core functions of each structure and device. Additionally, throughout this specification, the same reference numerals are used to describe identical components