US-12621105-B2 - Communication device and communication method

US12621105B2US 12621105 B2US12621105 B2US 12621105B2US-12621105-B2

Abstract

According to the present invention, a terminal comprises: a control circuit that makes different reference signal settings for multiple sections in which signals are repeatedly transmitted; and a transmission circuit that repeatedly transmits signals on the basis of the reference signal settings.

Inventors

Tetsuya Yamamoto
Hidetoshi Suzuki
Xuan Tuong TRAN
Yoshihiko Ogawa

Assignees

PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Dates

Publication Date: 20260505
Application Date: 20211125
Priority Date: 20210330

Claims (12)

1 . A communication apparatus, comprising: control circuitry, which, in operation, makes a configuration of a reference signal to be assigned to a first section for a repetition transmission and a configuration of a reference signal to be assigned to a second section for the repetition transmission different from each other; and transmission circuitry, which, in operation, performs the repetition transmission based on the configurations of the reference signals, wherein the configurations each include a configuration of at least one of a position, the number of symbols, a type, and/or a signal length of the reference signal in a corresponding one of the first section and the second section; and the control circuitry determines the configurations based on an information element including information on patterns of the configurations specific to the first section and the second section, respectively.
2 . The communication apparatus according to claim 1 , wherein the control circuitry determines the configurations based on the information element including information on a plurality of candidates for the patterns and a control signal indicating any one of the plurality of candidates.
3 . The communication apparatus according to claim 1 , wherein the information element is an information element relating to a configuration of a time-domain resource to which a signal for the repetition transmission is assigned.
4 . The communication apparatus according to claim 3 , wherein the control circuitry uses, for the configurations of the reference signals, the information element relating to the configuration of the time-domain resource in preference to an information element relating to the configurations of the reference signals.
5 . The communication apparatus according to claim 1 , wherein the information on the patterns is specific to a type of the repetition transmission.
6 . The communication apparatus according to claim 1 , wherein the information element is an information element relating to the configurations of the reference signals.
7 . The communication apparatus according to claim 1 , wherein a size of at least one of the patterns of the configurations is different from the number of repetition transmissions.
8 . The communication apparatus according to claim 1 , wherein the configurations include offsets for specified positions of the reference signals in the first section and the second section, respectively.
9 . The communication apparatus according to claim 1 , wherein neither of the configurations is applied to a reference signal to be assigned to a third section for the repetition transmission.
10 . A communication apparatus, comprising: control circuitry, which, in operation, makes a configuration of a reference signal to be assigned to a first section in which reception of a repetition transmission is performed and a configuration of a reference signal to be assigned to a second section in which reception of the repetition transmission is performed different from each other; and reception circuitry, which, in operation, performs the reception of the repetition transmission based on the configurations of the reference signals, wherein the configurations each include a configuration of at least one of a position, the number of symbols, a type, and/or a signal length of the reference signal in a corresponding one of the first section and the second section; and the control circuitry determines an information element including information on patterns of the configurations specific to the first section and the second section, respectively.
11 . A communication method, comprising: making, by a communication apparatus, a configuration of a reference signal to be assigned to a first section for a repetition transmission and a configuration of a reference signal to be assigned to a second section for the repetition transmission different from each other; and performing, by the communication apparatus, the repetition transmission based on the configurations of the reference signals, wherein the configurations each include a configuration of at least one of a position, the number of symbols, a type, and/or a signal length of the reference signal in a corresponding one of the first section and the second section; and the configurations are determined based on an information element including information on patterns of the configurations specific to the first section and the second section, respectively.
12 . A communication method, comprising: making, by a communication apparatus, a configuration of a reference signal to be assigned to a first section in which reception of a repetition transmission is performed and a configuration of a reference signal to be assigned to a second section in which reception of the repetition transmission is performed different from each other; and performing, by the communication apparatus, the reception of the repetition transmission based on the configurations of the reference signals, wherein the configurations each include a configuration of at least one of a position, the number of symbols, a type, and/or a signal length of the reference signal in a corresponding one of the first section and the second section; and determining an information element including information on patterns of the configurations specific to the first section and the second section, respectively.

Description

TECHNICAL FIELD The present disclosure relates to a communication apparatus and a communication method. BACKGROUND ART In recent years, a dramatic growth of Internet of Things (IoT) has been expected with the expansion and diversification of radio services as a background. The usage of mobile communication is extending to all fields such as automobiles, houses, home electric appliances, or industrial equipment in addition to information terminals such as smart phones. In order to support the diversification of services, a substantial improvement in the performance and function of mobile communication systems has been required for various requirements such as an increase in the number of connected devices or low latency in addition to an increase in system capacity. The 5th generation mobile communication systems (5G) has features of enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra reliable and low latency communication (URLLC), and can flexibly provide radio communication in response to a wide variety of needs, by using these features. The 3rd Generation Partnership Project (3GPP) as an international standardizing body has been specifying New Radio (NR) as one of 5G radio interfaces. CITATION LIST Non-Patent Literature NPL 1 3GPP TS38.104V15.12.0, “NR; Base Station (BS) radio transmission and reception (Release 15),” December 2020. NPL 2 3GPP TSG RAN Meeting #90e, RP-202928, “New WID on NR coverage enhancements.” China Telecom, December 2020. NPL 3 3GPP TS38.211 V16.4.0. “NR; Physical channels and modulation (Release 16),” December 2020. NPL 4 3GPP TS38.212 V16.4.0, “NR; Multiplexing and channel coding (Release 16),” December 2020. NPL 5 3GPP TS38.213 V16.4.0, “NR; Physical layer procedures for control (Release 16),” December 2020. NPL 6 3GPP TS38.214 V16.4.0, “NR; Physical layer procedures for data (Release 16),” December 2020. NPL 7 3GPP TS38.331 V16.3.1, “NR: Radio Resource Control (RRC) protocol specification (Release 16)”, January 2021. SUMMARY OF INVENTION Technical Problem However, there is scope for further study on a method of configuring a reference signal flexibly. One non-limiting and exemplary embodiment of the present disclosure facilitates providing a communication apparatus and a communication method each capable of configuring a reference signal flexibly. A communication apparatus according to an exemplary embodiment of the present disclosure includes: control circuitry, which, in operation, makes a configuration of a reference signal to be assigned to a first section for a repetition transmission and a configuration of a reference signal to be assigned to a second section for the repetition transmission different from each other; and transmission circuitry, which, in operation, performs the repetition transmission based on the configurations of the reference signals. It should be noted that general or specific embodiments may be implemented as a system, a method, an integrated circuit, a computer program, a storage medium, or any selective combination thereof. According to an exemplary embodiment of the present disclosure, it is possible to configure a reference signal flexibly. Additional benefits and advantages of the disclosed embodiments will become apparent from the specification and drawings. The benefits and/or advantages may be individually obtained by the various embodiments and features of the specification and drawings, which need not all be provided in order to obtain one or more of such benefits and/or advantages. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 illustrates an exemplary Demodulation Reference Signal (DMRS) configuration in repetition of an uplink signal: FIG. 2 illustrates another exemplary DMRS configuration in the repetition of the uplink signal; FIG. 3 illustrates still another exemplary DMRS configuration in the repetition of the uplink signal: FIG. 4 is a block diagram illustrating an exemplary configuration of part of a base station: FIG. 5 is a block diagram illustrating an exemplary configuration of part of a terminal; FIG. 6 is a block diagram illustrating an exemplary configuration of the base station; FIG. 7 is a block diagram illustrating an exemplary configuration of the terminal: FIG. 8 is a flowchart describing an exemplary transmission operation in the terminal; FIG. 9 illustrates an exemplary Physical Uplink Shared Channel (PUSCH)-TimeDomainResourceAllocation Information Element (IE) according to Embodiment 1; FIG. 10 illustrates an example of PUSCH-Allocation according to Embodiment 1: FIG. 11 illustrates exemplary DMRS configuration patterns according to Embodiment 1: FIG. 12 illustrates another example of the PUSCH-Allocation according to Embodiment 1; FIG. 13 illustrates an exemplary DMRS configuration in repetition of PUSCH according to Embodiment 1: FIG. 14 illustrates an example of PUSCH-Allocation according to Variation 1; FIG. 15 illustrates another example of the PUSCH-Allocation according to Variation