US-12628133-B2 - Communication resource allocation using temporally broadening pilot signal information

US12628133B2US 12628133 B2US12628133 B2US 12628133B2US-12628133-B2

Abstract

A communication method and device may compensate for temporal broadening in a communication system. An operation method of a first communication node in a communication system, in the present disclosure, may include the steps of: transmitting, on a preset cycle, a first signal block including a pilot signal; receiving temporal broadening information about the pilot signal from a second communication node; allocating a communication resource to the second communication node on the basis of the temporary broadening information if communication with the second communication node is required; and communicating with the second communication node by using the allocated communication resource.

Inventors

Gene Back Hahn
Young Kil Suh
Ui Hyun Hong
Bum Jun KIM
Jeonghyeon Kwon
Wan Choi

Assignees

HYUNDAI MOTOR COMPANY
KIA CORPORATION
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

Dates

Publication Date: 20260512
Application Date: 20240327
Priority Date: 20210927

Claims (18)

1 . An operation method of a first communication node in a communication system, the operation method comprising: transmitting a first signal block including a pilot signal at a preset periodicity; receiving information on a temporal broadening of the pilot signal from a second communication node; allocating a communication resource to the second communication node based on the information on the temporal broadening in response that a communication with the second communication node is required; and communicating with the second communication node using the allocated communication resource, wherein in the allocating of the communication resource, the communication resource is allocated to the second communication node based on a predetermined mapping rule, and the predetermined mapping rule is configured to: divide ratios of a transmission time Ts of the pilot signal to a time Ts′ during which the pilot signal is measured at the second communication node into n predetermined ranges wherein the n is 2 or more; divide frequency resources allocatable by the first communication node into the n ranges; map the frequency resources to the n ranges of the ratios in order from high to low frequencies; and map the ratios of the transmission time Ts of the pilot signal to the time Ts′ during which the pilot signal is measured at the second communication node to the n ranges from small to high values.
2 . The operation method of claim 1 , wherein the information on the temporal broadening is information on the time Ts′ during which the pilot signal is measured at the second communication node.
3 . The operation method of claim 1 , wherein the first signal block includes information on the transmission time Ts of the pilot signal.
4 . The operation method of claim 3 , wherein the information on the temporal broadening is information on a ratio of the transmission time Ts of the pilot signal to the time Ts′ during which the pilot signal is measured at the second communication node.
5 . The operation method of claim 1 , wherein in response that the first communication node communicates in an Orthogonal Frequency Division Multiplexing (OFDM) scheme, the first communication node determines one of three or more types of Cyclic Prefix (CP) symbol based on the information on the temporal broadening in allocating the communication resource.
6 . The operation method of claim 1 , wherein in the allocating of the communication resource, the communication resource is allocated to the second communication node based on a second predetermined mapping rule, and the second predetermined mapping rule is configured to: divide distances between the first communication node and the second communication node into a predetermined plurality of first ranges; divide the frequency resources allocatable by the first communication node into the first ranges from high to low frequencies; map the frequency resources to the first ranges in order from high to low frequencies; and map the distances to the first ranges from a closest distance to a farthest distance.
7 . The operation method of claim 1 , wherein the communication resource is allocated based on a latency requirement of a service requested by the second communication node in allocating the communication resource.
8 . The operation method of claim 1 , further comprising: transmitting information on a frequency resource set for transmitting the pilot signal before transmitting the first signal block.
9 . A first communication node in a communication system, comprising: a transceiver configured to transmit and receive signals to and from at least one second communication node; and at least one processor, wherein the at least one processor is configured to: control the transceiver to transmit a first signal block including a pilot signal at a preset periodicity; control the transceiver to receive information on a temporal broadening of the pilot signal from the at least one second communication node; allocate a communication resource to the at least one second communication node based on the information on the temporal broadening in response that a communication with the at least one second communication node is required; and control the transceiver to communicate with the at least one second communication node via the allocated communication resource, wherein the at least one processor allocates the communication resource to the at least one second communication node based on a predetermined mapping rule, and the predetermined mapping rule is configured to: divide ratios of a transmission time Ts of the pilot signal to a time Ts′ during which the pilot signal is measured at the at least one second communication node into n predetermined ranges wherein the n is 2 or more; divide frequency resources allocatable by the first communication node into the n ranges; map the frequency resources to the n ranges of the ratios in order from high to low frequencies; and map the ratios of the transmission time Ts of the pilot signal to the time Ts′ during which the pilot signal is measured at the at least one second communication node to the n ranges from small to high values.
10 . The first communication node of claim 9 , wherein the information on the temporal broadening is information on the time Ts′ during which the pilot signal is measured at the at least one second communication node.
11 . The first communication node of claim 9 , wherein the first signal block includes information on the transmission time Ts of the pilot signal.
12 . The first communication node of claim 11 , wherein the information on the temporal broadening is information on a ratio of the transmission time Ts of the pilot signal to the time Ts′ during which the pilot signal is measured at the at least one second communication node.
13 . The first communication node of claim 9 , wherein in response that the first communication node communicates in an Orthogonal Frequency Division Multiplexing (OFDM) scheme, the at least one processor determines one of three or more types of Cyclic Prefix (CP) symbol based on the information on the temporal broadening in allocating the communication resource.
14 . The first communication node of claim 9 , wherein the at least one processor allocates the communication resource to the at least one second communication node based on a second predetermined mapping rule, and the second predetermined mapping rule is configured to: divide distances between the first communication node and the at least one second communication node into a predetermined plurality of first ranges; divide the frequency resources allocatable by the first communication node into the first ranges from high to low frequencies; map the frequency resources to the first ranges in order from high to low frequencies; and map the distances to the first ranges from a closest distance to a farthest distance.
15 . The first communication node of claim 9 , wherein the at least one processor allocates the communication resource based on a latency requirement of a service requested by the at least one second communication node or a service to be provided to the at least one second communication node in allocating the communication resource.
16 . The first communication node of claim 9 , wherein the at least one processor further transmits information on a frequency resource set for transmitting the pilot signal before transmitting the first signal block.
17 . An operation method of a first communication node in a communication system, the operation method comprising: receiving a first signal block including a pilot signal from a second communication node; measuring information on a temporal broadening based on a reception time of the pilot signal; providing the information on the temporal broadening to the second communication node; and in response to a communication resource allocated by the second communication node, communicating with the second communication node based on the allocated resource, wherein the communication resource is allocated by the second communication node based on a predetermined mapping rule, and the predetermined mapping rule is configured to: divide ratios of a transmission time Ts of the pilot signal to a time Ts′ during which the pilot signal is measured at the second communication node into n predetermined ranges wherein the n is 2 or more; divide frequency resources allocatable by the first communication node into the n ranges; map the frequency resources to the n ranges of the ratios in order from high to low frequencies; and map the ratios of the transmission time Ts of the pilot signal to the time Ts′ during which the pilot signal is measured at the second communication node to the n ranges from small to high values.
18 . The operation method of claim 17 , wherein the information on the temporal broadening is information on a ratio of a transmission time Ts of the pilot signal to the time Ts′ during which the pilot signal is measured.

Description

CROSS-REFERENCE TO RELATED APPLICATION The present application is a continuation-in-part of currently pending International Patent Application No. PCT/KR2022/014454, filed Sep. 27, 2022, which claims priority to Korean Patent Application Number 10-2021-0127531, filed Sep. 27, 2021, the entire contents of which are incorporated herein for all purposes by these references. BACKGROUND OF THE PRESENT DISCLOSURE Field of the Present Disclosure The present disclosure relates to a communication technique in a communication system, and more particularly, to a technique for resource allocation considering temporal broadening in a communication system. Description of Related Art With the development of information and communication technology, various wireless communication technologies have been developed. Typical wireless communication technologies include Long Term Evolution (LTE), new radio (NR), 6th generation (6G) communication, and/or the like. The LTE may be one of 4th generation (4G) wireless communication technologies, and the NR may be one of 5th generation (5G) wireless communication technologies. In order to process rapidly increasing wireless data, the 5G (or NR) communication or subsequent wireless communication technologies can support communication in relatively high frequency bands. For example, radio frequency bands used for wireless communication in the 5G (or NR) communication specifications may be broadly classified into frequency range 1 (FR1) bands and frequency range 2 (FR2) bands. Here, the FR1 bands may refer to relatively low frequency bands as compared to the FR2 bands, which are of about 7 GHz or below. The FR2 bands may refer to relatively high frequency bands as compared to the FR1 bands, which are of about 7 GHz or above. The FR2 bands may be 28-29 GHz bands, which include unlicensed bands, millimeter wave bands, and terahertz wave bands. In the 5G (or NR) standardization meeting, research is being actively conducted to utilize a wide frequency band in the FR2 band, which is a relatively high frequency band. However, the current 5G (or NR) technical specifications do not have technical decisions on how to flexibly operate a wide frequency band depending on a situation. The information disclosed in this Background of the Invention section is only for enhancement of understanding of the general background of the invention and may not be taken as an acknowledgement or any form of suggestion that this information forms the related art already known to a person skilled in the art. BRIEF SUMMARY The present disclosure is directed to providing a method and an apparatus of allocating resources for efficient operations of a high frequency band. The present disclosure is directed to providing a method and an apparatus of operating resources that resolve problems such as temporal broadening or path loss in a communication system using a millimeter wave band and/or terahertz wave band. The present disclosure is directed to providing a method and an apparatus of determining a cyclic prefix (CP) symbol in a communication using a millimeter wave band and/or terahertz wave band and using an orthogonal frequency division multiplexing (OFDM) scheme. A method according to an exemplary embodiment of the present disclosure, as an operation method of a first communication node in a communication system, may include: transmitting a first signal block including a pilot signal at a preset periodicity; receiving information on a temporal broadening of the pilot signal from a second communication node; allocating a communication resource to the second communication node based on the information on the temporal broadening when communication with the second communication node is required; and communicating with the second communication node using the allocated communication resource. The information on the temporal broadening may be information on a time Ts′ during which the pilot signal is measured at the second communication node. The first signal block may include information on a transmission time Ts of the pilot signal. The information on the temporal broadening may be information on a ratio of the transmission time Ts of the pilot signal to a time Ts′ during which the pilot signal is measured at the second communication node. In the allocating of the communication resource, the communication resource may be allocated to the second communication node based on a predetermined mapping rule, and the predetermined mapping rule may be configured to: divide a ratio of a transmission time Ts of the pilot signal to a time Ts′ during which the pilot signal is measured at the second communication node into n predetermined ranges wherein the n is 2 or more; divide frequency resources allocatable by the first communication node into the n ranges; map the frequency resources to the n ranges of the ratio in order from high frequency to low frequency; and map the ratio of the transmission time Ts of the pilot signal to the