WO2024038607A1 - Terminal - Google Patents

Abstract

The present invention provides a terminal comprising: a transmission unit that transmits a preamble in random access; and a control unit that selects transmission opportunities at which the transmission unit is to transmit the preamble, wherein the control unit selects transmission opportunities that overlap with an uplink (UL) subband from among a plurality of subbands defined in a time-division duplex (TDD) band.

Description

terminal

This disclosure relates to a terminal that supports SBFD.

The 3rd Generation Partnership Project (3GPP) specifies the 5th generation mobile communication system (5G, also known as New Radio (NR) or Next Generation (NG)), and further develops the next generation called Beyond 5G, 5G Evolution or 6G. Specifications are also being developed.

In 3GPP Release 18, expansion of TDD (Time Division Duplex) is being discussed. Specifically, SBFD (SubBand non-overlapping Full Duplex) is being discussed, which enables simultaneous use of UL (UpLink) and DL (DownLink) by specifying multiple subbands within the TDD band. (Non-patent Document 1).

The UE transmits data in UL slots/symbols. However, there is a problem in how to transmit data in an SBFD slot/symbol where multiple subbands are defined within the TDD band.

Therefore, the present disclosure has been made in view of this situation, and aims to provide a terminal that can transmit data in SBFD slots/symbols.

One aspect of the disclosure includes a transmission unit 260 that transmits a preamble in random access, and a control unit 270 that selects a transmission opportunity for the transmission unit 260 to transmit the preamble, and the control unit 270 has a TDD (Time This is a terminal that selects a transmission opportunity that overlaps with the UL (UpLink) subband from among multiple subbands specified within the UL (UpLink) subband.

One aspect of the disclosure includes a transmission unit 260 that transmits a message including an RRC (Radio Resource Control) connection request in random access, and an UL (Uplink ) A terminal comprising: a controller 270 that causes the transmitter 260 to transmit the message in a subband.

FIG. 1 is an overall schematic configuration diagram of a wireless communication system 10. FIG. 2 is a diagram showing a configuration example of a radio frame, subframe, slot, and symbol used in the radio communication system 10. FIG. 3 is a diagram showing an example of the configuration of SBFD slots/symbols. FIG. 4 is a diagram showing mapping between SSB and RO. FIG. 5 is a functional block diagram of the terminal 200. FIG. 6 is a diagram showing overlapping ROs in SBFD slots/symbols. FIG. 7 is a diagram illustrating an example of understanding of SSB-RO mapping between an SBFD-compatible terminal and an SBFD-incompatible terminal. FIG. 8 is a diagram illustrating an example of understanding of SSB-RO mapping between an SBFD-compatible terminal and an SBFD-incompatible terminal. FIG. 9 is a diagram showing an example of the hardware configuration of the wireless base station 100 and the terminal 200. FIG. 10 is a diagram showing an example of the configuration of vehicle 2001.

Hereinafter, embodiments will be described based on the drawings. Note that the same functions and configurations are given the same or similar symbols, and the description thereof will be omitted as appropriate.

[Embodiment]
(1) Overall schematic configuration of the wireless communication system As shown in FIG. 1, the wireless communication system 10 includes a Next Generation-Radio Access Network 20 (hereinafter referred to as NG-RAN20) including a wireless base station 100 (hereinafter referred to as gNB 100), A terminal 200 (hereinafter referred to as UE (User Equipment) 200) is included. NG-RAN20 may be simply expressed as a "network."

The wireless communication system 10 is a wireless communication system that complies with 5G New Radio (NR). On the other hand, the wireless communication system 10 may be a wireless communication system that follows a system called Beyond 5G, 5G Evolution, or 6G. Further, the specific configuration of the wireless communication system 10, for example, the number of gNBs 100 and UEs 200, is not limited to the example shown in FIG. 1.

The wireless communication system 10 includes a Massive MIMO (Multiple-Input Multiple-Output) system that generates a highly directional antenna beam (hereinafter referred to as beam BM) by controlling wireless signals transmitted from multiple antenna elements. It can support carrier aggregation (CA), which uses multiple component carriers (CC), and dual connectivity (DC), which allows simultaneous communication with two wireless base stations.

The wireless communication system 10 may support multiple frequency ranges (FR). Specifically, the following frequency ranges may be supported.

・FR1: 410MHz to 7.125GHz
・FR2-1: 24.25GHz to 52.6GHz

In FR1, sub-carrier spacing (SCS) of 15, 30 or 60 kHz and a bandwidth (BW) of 5 to 100 MHz may be used. In FR2-1, SCS of 60 or 120kHz (may include 240kHz) and BW of 50-400MHz may be used.

Furthermore, the wireless communication system 10 may support a frequency band higher than the frequency band of FR2-1. Specifically, the wireless communication system 10 may support frequency bands exceeding 52.6 GHz and up to 71 GHz. Such a high frequency band may be referred to as FR2-2.

When using the FR2-2 frequency band, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) or Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT- S-OFDM) may be applied.

By the way, as shown in FIG. 2, when the configuration of 14 symbols per slot is maintained, the larger (wider) the SCS, the shorter the symbol period (and slot period) becomes. Note that the time direction may also be referred to as a time domain, time domain, symbol period, symbol length, symbol time, or the like. Further, the frequency direction may be called a frequency domain, resource block, subcarrier, BWP (BandWidth Part), or the like.

Frequency resources may include component carriers, subcarriers, resource blocks (RBs), resource block groups (RBGs), BWPs, etc. The time resources may include symbols, slots, minislots, subframes, radio frames, DRX (Discontinuous Reception) periods, and the like.

Note that the number of symbols constituting one slot does not necessarily have to be 14 symbols, and may be, for example, 28 or 56 symbols. Further, the number of slots per subframe may differ depending on the SCS.

In the wireless communication system 10 of the embodiment, a plurality of duplex schemes may be used. Specifically, in addition to FDD (Frequency Division Duplex) and TDD (Time Division Duplex), SBFD (Sub-Band Duplex) defines multiple subbands within the TDD band and enables simultaneous use of UL and DL. non-overlapping Full Duplex) may be used. That is, the gNB 100 and UE 200 of the embodiment support SBFD in addition to FDD and TDD. Hereinafter, a slot/symbol in which multiple subbands are defined within a TDD band will also be referred to as an SBFD slot/symbol.

Note that SBFD can also be said to be a duplex method in which UL and DL are allocated non-overlappingly in the frequency direction within a specified time based on TDD. SBFD can also be said to be subband full duplex.

As shown in FIG. 3, the SBFD slot/symbol is a slot/symbol in which multiple subbands are defined within the TDD band. Each subband is assigned a UL or DL. In the following, a subband to which UL is assigned is also referred to as a UL subband, and a subband to which DL is assigned is also referred to as a DL subband.

In Figures 3 and 6 to 8, slots/symbols or subbands marked with "U" are UL slots/symbols or UL subbands, and slots/symbols marked with "D" are UL slots/symbols or UL subbands. or a subband is a DL slot/symbol or a DL subband.

gNB100 is a radio base station that transmits and receives radio signals to and from UE200. The gNB 100 can spatially and time-divisionally transmit a plurality of beams BM having different transmission directions (which may also be referred to simply as directions, radiation directions, coverage, etc.). Note that the gNB 100 may transmit multiple beams BM simultaneously.

The gNB 100 of the embodiment periodically transmits a synchronization signal using the beam BM. The synchronization signal is, for example, SSB (SS/PBCH Block). Note that the transmission period (periodity) of SSB is, for example, 5, 10, 20, 40, 80, or 160 milliseconds.

As shown in FIG. 4, the RACH opportunity (Random Access CHannel Occasion, hereinafter also referred to as RO), which is a resource for transmitting a preamble when the UE 200 starts random access, is mapped to the SSB. Ru. The RO can also be said to be a transmission opportunity for the UE 200 to transmit a preamble.

Note that in FIG. 4, one RO is mapped to four SSBs, but the mapping is not limited to this. One RO may be mapped to one SSB, or two ROs may be mapped to one SSB. Furthermore, the number of SSBs or ROs in the frequency direction or the time direction is not particularly limited.

The UE 200 is a terminal that transmits and receives wireless signals to and from the gNB 100. UE 200 of embodiments may transmit data in SBFD slots/symbols. Specifically, UE 200 can transmit data in the UL subband among the multiple subbands defined in the SBFD slot/symbol. The data to be transmitted may be, for example, a preamble for random access or a message including an RRC (Radio Resource Control) connection request (hereinafter also referred to as Msg 3 PUSCH (Physical Uplink Shared CHannel)), but is limited to these. do not have.

(2) Configuration of wireless communication system As shown in FIG. 5, the UE 200 includes a wireless signal transmitting/receiving section 210, an amplifier section 220, a modulation/demodulation section 230, a control signal/reference signal processing section 240, and an encoding/decoding section. 250, a data transmitting/receiving section 260, and a control section 270.

The wireless signal transmitting and receiving unit 210 transmits and receives wireless signals to and from the gNB 100. The wireless signal transmitting/receiving unit 210 may include a transmitting unit that transmits a wireless signal to the gNB 100, and a receiving unit that receives the wireless signal from the gNB 100.

The amplifier section 220 is composed of a PA (Power Amplifier)/LNA (Low Noise Amplifier), etc. Amplifier section 220 amplifies the radio signal output from modulation/demodulation section 230 to a predetermined power level. Furthermore, the amplifier section 220 amplifies the wireless signal output from the wireless signal transmitting/receiving section 210.

The modulation/demodulation unit 230 performs data modulation/demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB 100 or other gNB). The modulation/demodulation unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). Furthermore, DFT-S-OFDM may be used not only for UL but also for DL.

The control signal/reference signal processing unit 240 executes processing regarding various control signals and reference signals transmitted and received by the UE 200.

Specifically, the control signal/reference signal processing unit 240 receives the SSB transmitted from the gNB 100. Further, the control signal/reference signal processing unit 240 selects an RO to be mapped to the SSB in random access. The control signal/reference signal processing unit 240 selects an RO that overlaps the UL subband of the UL slot/symbol or the SBFD slot/symbol. Thereby, the data transmitting/receiving section 260, which will be described later, can transmit the preamble in the UL slot/symbol or the UL subband.

Furthermore, the control signal/reference signal processing unit 240 does not select an RO that overlaps with the DL subband of the DL slot/symbol or the SBFD slot/symbol. As a result, the data transmitter/receiver 260 cannot transmit the preamble in the DL slot/symbol or DL subband.

In this way, the data transmitting/receiving unit 260 transmits the preamble in the RO selected by the control signal/reference signal processing unit 240. Therefore, it can be said that the control signal/reference signal processing section 240 causes the data transmitting/receiving section 260 to transmit the preamble in the selected RO. Note that the preamble is transmitted on a physical random access channel such as PRACH (Physical Random Access CHannel). In the following, the preamble is also referred to as Msg 1 PRACH.

On the other hand, the control signal/reference signal processing unit 240 does not have to cause the data transmitting/receiving unit 260 to transmit the preamble in the selected RO. For example, if an RO that overlaps with the UL subband of the SBFD slot/symbol is selected, the data transmitter/receiver 260 does not need to transmit a preamble in this RO. In this case, that is, when no preamble is transmitted in the overlapping RO in the UL subband of the SBFD slot/symbol, the control signal/reference signal processing unit 240 transmits a control channel such as PDCCH (Physical downlink Control CHannel) in this UL subband. Candidates may be monitored.

Note that as shown in FIG. 6, an RO that overlaps with the UL subband of a UL slot/symbol or SBFD slot/symbol is also referred to as a valid RO. In addition, an RO that overlaps with the DL subband of a DL slot/symbol or SBFD slot/symbol is also referred to as an invalid RO. In other words, a transmission opportunity that can transmit a preamble is valid RO, and a transmission opportunity that cannot transmit a preamble is invalid RO. Therefore, the control signal/reference signal processing unit 240 selects valid RO and does not select invalid RO as a transmission opportunity for transmitting a preamble.

Here, with reference to FIGS. 7 and 8, understanding of the mapping between SSB and RO from the perspective of the UE 200 will be explained. Note that the mapping understanding between SSB and RO seen from the UE 200 described below is the mapping understanding between SSB and valid RO. In FIGS. 7 and 8, SBFD capable UE is the UE 200 of the embodiment that supports SBFD, and Legacy UE is a conventional terminal that does not support SBFD. Legacy UE recognizes SBFD slots/symbols as DL slots/symbols that cannot transmit data.

The UE 200 considers ROs that overlap the UL subbands of UL slots/symbols or SBFD slots/symbols to be valid ROs. On the other hand, conventional terminals consider ROs that overlap in UL slots/symbols to be valid ROs. Therefore, as shown in FIG. 7, even when only valid ROs that overlap in UL slots/symbols are taken up between the UE 200 and the conventional terminal, the mapping understanding between SSB and RO is different.

For example, as a beam BM limitation of gNB100, if FR2 only supports general analog beamforming, beam BM can only be formed in one direction at the same time, and resources can be divided in the frequency direction. I can't do it either. In such a case, the gNB 100 must select any one beam BM to receive the preamble. However, if the SSB and RO mapping understanding is different between the UE200 and the conventional terminal in the same slot/symbol, the gNB100 may decide which beam BM to select in order to transmit the RAR UL grant for the received preamble. cannot be recognized.

Therefore, as shown in FIG. 8, between the UE 200 and the conventional terminal, it is desirable to have the same understanding of mapping between SSB and RO in ROs that overlap in UL slots/symbols. Therefore, the RACH settings may be distinguished in advance between SBFD slots/symbols and non-SBFD slots/symbols. Thereby, ROs that overlap with SBFD slots/symbols and ROs that overlap with slots/symbols that are not SBFD slots/symbols (hereinafter also referred to as non-SBFD slots/symbols) may be distinguished in advance. In other words, where ROs are mapped to SSBs, ROs that overlap SBFD slots/symbols may be mapped to SSBs separately from ROs that overlap non-SBFD slots/symbols.

Distinguishing the RACH settings between SBFD slots/symbols and non-SBFD slots/symbols may be achieved, for example, as follows.

・In addition to RACH settings for non-SBFD slots/symbols (traditional RACH settings), RACH settings for SBFD slots/symbols such as RACH-ConfigCommon-For-SBFD/RACH-ConfigCommonTwoStepRA-For-SBFD/RACH-ConfigDedicated -For-SBFD/RACH-ConfigGeneric-For-SBFD/RACH-ConfigGenericTwoStepRA-For-SBFD parameters are indicated by SIB 1/can be configured by RRC.

This allows the UE200 to distinguish between ROs that overlap in SBFD slots/symbols, so for ROs that overlap in non-SBFD slots/symbols, the UE200 has the same understanding of the mapping between SSB and RO as with conventional terminals. It can be done.

Note that when using PDCCH ordered RACH, it may be necessary to clarify whether the PRACH Mask index is for non-SBFD slots/symbols or SBFD slots/symbols. For this purpose, the following means may be used.

- One bit from the reserved bits of DCI 1_0 for RACH ordering may be used to indicate whether the RACH setting is for non-SBFD slots/symbols or for SBFD slots/symbols.
- It may be determined by default that it is for non-SBFD slots/symbols (or for SBFD slots/symbols).
- Since the ROs for non-SBFD slots/symbols and ROs for SBFD slots/symbols for the same SSB are in the same order, the PRACH Mask index may be used to instruct the ROs in the set order.

Alternatively, the mapping understanding between SSB and RO may be completely different between the UE 200 and the conventional terminal. That is, selectable ROs may be distinguished in advance between the UE 200 and the conventional terminal. In this case, the UE 200 selects the RO for the UE 200, and the conventional terminal selects the RO for the conventional terminal.

The control signal/reference signal processing unit 240 receives the RAR (Random Access Response) UL grant transmitted from the gNB100. Further, the control signal/reference signal processing unit 240 causes the data transmitting/receiving unit 260 to transmit a message including the RRC connection request based on the RAR UL grant. Specifically, the control signal/reference signal processing unit 240 causes the data transmitting/receiving unit 260 to transmit a message including the RRC connection request in the UL slot/symbol or UL subband. Note that the message including the RRC connection request is transmitted on a physical uplink shared channel such as PUSCH (Physical Uplink Shared CHannel). In the following, the message containing the RRC connection request is also referred to as Msg 3 PUSCH.

Furthermore, the control signal/reference signal processing unit 240 does not cause the data transmitting/receiving unit 260 to transmit Msg 3 PUSCH in the DL subband of the DL slot/symbol or the SBFD slot/symbol.

In this way, the control signal/reference signal processing unit 240 causes the data transmitting/receiving unit 260 to transmit the preamble and Msg 3 PUSCH in the UL subband of the UL slot/symbol or SBFD slot/symbol. Furthermore, the control signal/reference signal processing unit 240 does not cause the data transmitting/receiving unit 260 to transmit the preamble and Msg 3 PUSCH in the DL subband of the DL slot/symbol or the SBFD slot/symbol.

The encoding/decoding unit 250 performs data division/concatenation, channel coding/decoding, etc. for each predetermined communication destination (gNB 100 or other gNB).

Specifically, the encoding/decoding unit 250 divides the data output from the data transmitting/receiving unit 260 into predetermined sizes, and performs channel coding on the divided data. Furthermore, the encoding/decoding section 250 decodes the data output from the modulation/demodulation section 230 and concatenates the decoded data.

The data transmitting and receiving unit 260 transmits and receives data such as Protocol Data Unit (PDU)/Service Data Unit (SDU) to and from the gNB 100. The data transmitting/receiving section 260 may include a transmitting section that transmits data to the gNB 100 and a receiving section that receives data from the gNB 100.

Specifically, the data transmitter/receiver 260 assembles PDUs/SDUs in multiple layers (medium access control (MAC) layer, radio link control (RLC) layer, packet data convergence protocol (PDCP) layer, etc.). /Perform disassembly, etc. The data transmitting/receiving unit 260 also performs data error correction and retransmission control based on HARQ (Hybrid Automatic Repeat Request).

The transmitting unit forming the data transmitting/receiving unit 260 of the embodiment transmits a preamble and Msg 3 PUSCH in random access. In particular, when transmitting a preamble, the preamble is transmitted in the RO selected by the control signal/reference signal processing unit 240.

In addition, the receiving unit forming the data transmitting/receiving unit 260 receives the SSB and RAR UL grant transmitted from the gNB 100 in random access. Based on the SSB and RAR UL grant received by the receiving unit constituting the data transmitting/receiving unit 260, the control signal/reference signal processing unit 240 causes the data transmitting/receiving unit 260 to transmit a preamble and Msg 3 PUSCH.

The control unit 270 controls each functional block that configures the UE 200. That is, it can be said that the functions of the control unit in the claims are realized by each functional block that constitutes the UE 200, such as the control signal/reference signal processing unit 240 of the embodiment.

UE 200 may transmit capability information of UE 200 such as UE Capability (see FIG. 1). For example, the following content may be defined as the capability information of the UE 200.
- Whether or not to support Msg 1 PRACH transmission in SBFD slot/symbol - Whether to support distinguishing RACH settings between SBFD slot/symbol and non-SBFD slot/symbol - Msg 3 PUSCH in SBFD slot/symbol Whether to support transmission - If a preamble is not transmitted in a valid RO, in a series of symbols of the valid RO symbol and the N_gap symbol before the valid RO, PDCCH (for RAR CSS with RA-RNTI and/or with type 1 Whether or not to support CSS with TC-RNTI) monitoring

(3) Operation of wireless communication system The operation of the wireless communication system 10 will be explained. Specifically, an operation in which UE 200 transmits data in SBFD slots/symbols in random access will be described. First, the operation of transmitting a preamble in the SBFD slot/symbol will be explained, and then the operation of transmitting Msg 3 PUSCH in the SBFD slot/symbol will be explained.

(3.1) Assignment (3.1.1) Assignment 1
UE200 starts random access in order to establish a connection with gNB100. Specifically, the UE 200 transmits a preamble in the RO mapped to the SSB transmitted from the gNB 100. However, when SBFD slots/symbols are used in which multiple subbands are defined within the TDD band, there is a problem of how to transmit a preamble in an RO that overlaps with the SBFD slots/symbols.
(3.1.2) Assignment 2
UE200 transmits Msg 3 PUSCH based on the RAR UL grant transmitted from gNB100 in random access. However, there is a problem in how to transmit Msg 3 PUSCH in an SBFD slot/symbol where multiple subbands are defined within the TDD band.

(3.2) Operation example (3.2.1) Operation example 1
UE 200 receives the SSB transmitted from gNB 100 when starting random access. Specifically, the receiving section that constitutes the data transmitting and receiving section 260 receives the SSB transmitted from the gNB 100.

The control signal/reference signal processing unit 240 selects the RO to be mapped to the SSB. Specifically, the control signal/reference signal processing unit 240 selects an RO that overlaps the UL subband of the UL slot/symbol or the SBFD slot/symbol. Here, it is assumed that the control signal/reference signal processing unit 240 selects an RO that overlaps the UL subband of the SBFD slot/symbol. Note that the control signal/reference signal processing unit 240 does not select an RO that overlaps with the DL subband of the DL slot/symbol or the SBFD slot/symbol.

The data transmitting/receiving unit 260 transmits the preamble in the RO selected by the control signal/reference signal processing unit 240. Thereby, UE200 starts random access with gNB100.

(3.2.2) Operation example 2
Here, a case will be described in which the preamble is not transmitted in the RO selected by the control signal/reference signal processing unit 240 in the above-described operation example 3.2.1. In this case, the control signal/reference signal processing unit 240 may monitor control channel candidates such as PDCCH in the UL subband where the selected ROs overlap.

(3.2.3) Operation example 3
UE200 receives the RAR UL grant transmitted from gNB100 in random access. Specifically, a receiving unit forming the data transmitting/receiving unit 260 receives the RAR UL grant transmitted from the gNB 100.

The control signal/reference signal processing unit 240 causes the data transmitting/receiving unit 260 to transmit Msg 3 PUSCH in the UL slot/symbol or UL subband. Here, it is assumed that the control signal/reference signal processing unit 240 causes the data transmitting/receiving unit 260 to transmit Msg 3 PUSCH in the UL subband of the SBFD slot/symbol. Note that the control signal/reference signal processing unit 240 does not cause the data transmitting/receiving unit 260 to transmit Msg 3 PUSCH in the DL subband of the DL slot/symbol or the SBFD slot/symbol.

(4) Effects and Effects In random access, the UE 200 of the embodiment described above selects an RO that overlaps the UL subband of the SBFD slot/symbol, and transmits a preamble in the selected RO. In this way, preambles can be transmitted in SBFD slots/symbols.

Furthermore, when the preamble is not transmitted in the selected RO, the UE 200 in the embodiment described above may monitor control channel candidates such as PDCCH in the UL subband where the ROs overlap. This allows monitoring of control channel candidates to be prioritized over preamble transmission in the RO.

In addition, the UE 200 of the embodiment described above transmits Msg 3 PUSCH in the UL subband of the SBFD slot/symbol in random access. In this way, Msg 3 PUSCH can be transmitted in an SBFD slot/symbol.

(5) Other Embodiments Although the content of the present invention has been explained above in accordance with the embodiments, it is understood that the present invention is not limited to these descriptions and that various modifications and improvements are possible. It is self-evident to business operators.

In the above disclosure, the UE 200 of the embodiment supports SBFD and selects an RO that overlaps with the SBFD slot/symbol, but the present invention is not limited to this. For example, while supporting SBFD, it may not be assumed that ROs overlap SBFD slots/symbols. A specific example is shown below.

- It is not assumed that the RO symbol and the N_gap symbol before the RO overlap with the SBFD slot/symbol.
- It is not assumed that a valid RO symbol and the N_gap symbol before the valid RO overlap in an SBFD slot/symbol.
- It is not assumed that the RO symbol and the N_gap symbol before the RO overlap with the SBFD semi-static (and/or dynamic) UL and/or flexible slot/symbol.
- It is not assumed that a valid RO symbol and the N_gap symbol before the valid RO overlap in the SBFD semi-static (and/or dynamic) UL and/or flexible slot/symbol.

SBFD semi-static UL slot/symbol is an SBFD slot/symbol that is configured as UL by tdd-UL-DL-ConfigurationCommon (or tdd-UL-DL-ConfigurationDedicated). Additionally, the SBFD dynamic UL slot/symbol is the SBFD slot/symbol that is set as flexible by tdd-UL-DL-ConfigurationCommon (or tdd-UL-DL-ConfigurationDedicated) and indicated as UL by DCI 2_0.

A SBFD semi-static flexible slot/symbol is an SBFD slot/symbol that is set as flexible by tdd-UL-DL-ConfigurationCommon (or tdd-UL-DL-ConfigurationDedicated). Additionally, the SBFD dynamic flexible slot/symbol is the SBFD slot/symbol that is set as flexible by tdd-UL-DL-ConfigurationCommon (or tdd-UL-DL-ConfigurationDedicated) and indicated as flexible by DCI 2_0.

In the above disclosure, the UE 200 of the embodiment supports SBFD and selects an RO that overlaps with the SBFD slot/symbol, but the present invention is not limited to this. For example, while supporting SBFD, ROs that overlap SBFD slots/symbols may be considered invalid ROs. A specific example is shown below.

・SBFD semi-static (and/or dynamic) ROs that overlap in DL slots/symbols are considered invalid ROs.
- SBFD semi-static (and/or dynamic) ROs that overlap in UL and/or flexible slots/symbols are considered invalid ROs.

The settings regarding the overlap between RO and SBFD slots/symbols in the above disclosure may be applied according to the conditions shown below.

・Apply to all ROs.
- Applies to ROs that follow a specific RACH configuration, such as the RACH configuration indicated by SIB 1 / RACH configuration indicated by dedicated RRC configuration.
-Apply to a specific RACH procedure/specific RACH type/specific RACH purpose/specific triggering method. A particular RACH procedure is, for example, a 2-step RACH or a 4-step RACH. Specific RACH types are contention based RACH or contention free RACH. Specific RACH purposes are, for example, RACH for initial access/for SI request/for SpCell BFR/sync with reconfiguration. The specific triggering method is, for example, PDCCH order/MAC entity/RRC.
- Applies depending on whether the specific scenario is RRC reconfigured/DCI indicated (for PDCCH order PRACH).

In the above disclosure, the UE 200 of the embodiment supports SBFD and transmits Msg 3 PUSCH in the SBFD slot/symbol, but the present invention is not limited to this. For example, while supporting SBFD, it may not be assumed to transmit Msg 3 PUSCH in SBFD slots/symbols. Specifically, if a RAR that schedules transmission of Msg 3 PUSCH in an SBFD slot/symbol is detected, Msg 3 PUSCH may not be transmitted. In the first place, it is not necessary to assume that a RAR that schedules transmission of Msg 3 PUSCH in an SBFD slot/symbol is detected.

In the above disclosure, the gNB 100 may recognize whether the terminal transmitting and receiving data is the UE 200 that can transmit Msg 3 PUSCH in the SBFD slot/symbol as follows.
- Distinguish in advance the RO for UE 200 that can transmit Msg 3 PUSCH in the SBFD slot/symbol.
・Whether the received RO overlaps the SBFD slot/symbol ・Whether the received RO has the RACH settings for SBFD slots/symbols or the RACH settings for non-SBFD slots/symbols

In the above disclosure, SSB was cited as an example of the synchronization signal, but the synchronization signal is not limited to this. For example, the reference signal CSI-RS may be used as the synchronization signal. Note that since the CSI-RS is used to establish time and frequency synchronization between the gNB 100 and the UE 200, it can also be said to be a synchronization signal.

In the above disclosure, a slot/symbol in which multiple subbands are defined within a TDD band is called an SBFD slot/symbol, but the slot/symbol is not limited to this. For example, it may be called an XDD (Cross Division Duplex) slot/symbol.

The above-described operation examples may be combined and applied in a complex manner as long as no contradiction occurs.

In the above disclosure, the terms configure, activate, update, indicate, enable, specify, and select may be used interchangeably. Similarly, link, associate, correspond, and map may be used interchangeably; allocate, assign, and monitor. , map may also be read interchangeably.

Further, the terms "specific", "dedicated", "UE specific", and "UE individual" may be interchanged. Similarly, common, shared, group-common, UE common, and UE shared may be interchanged.

The block configuration diagram (FIG. 5) used to explain the embodiment described above shows blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices. The functional block may be realized by combining software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't. For example, a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.

Furthermore, the gNB 100 and UE 200 (the devices) described above may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 9 is a diagram showing an example of the hardware configuration of the device. As shown in FIG. 9, the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

Note that in the following description, the word "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the device may include one or more of the devices shown in the figure, or may not include some of the devices.

Each functional block of the device (see FIG. 5) is realized by any hardware element of the computer device or a combination of hardware elements.

In addition, each function in the device is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls the memory This is realized by controlling at least one of data reading and writing in the storage 1002 and the storage 1003.

The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.

Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. Further, the various processes described above may be executed by one processor 1001, or may be executed by two or more processors 1001 simultaneously or sequentially. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.

The memory 1002 is a computer-readable recording medium, and includes at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. may be done. Memory 1002 may be called a register, cache, main memory, or the like. The memory 1002 can store programs (program codes), software modules, etc. that can execute a method according to an embodiment of the present disclosure.

The storage 1003 is a computer-readable recording medium, such as an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (such as a compact disk, a digital versatile disk, or a Blu-ray disk). (registered trademark disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc. Storage 1003 may also be called auxiliary storage. The above-mentioned recording medium may be, for example, a database including at least one of memory 1002 and storage 1003, a server, or other suitable medium.

The communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, network controller, network card, communication module, etc.

The communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.

The input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses for each device.

Furthermore, the device includes hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). A part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.

Furthermore, the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods. For example, information notification can be performed using physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. RRC signaling may also be referred to as RRC messages, such as RRC Connection Setup ) message, RRC Connection Reconfiguration message, etc.

Each aspect/embodiment described in this disclosure includes Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system ( 5G), Future Radio Access (FRA), New Radio (NR), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)) , IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), and other appropriate systems and next-generation systems enhanced based on these. may be applied to. Furthermore, a combination of multiple systems (for example, a combination of at least one of LTE and LTE-A with 5G) may be applied.

The order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.

In some cases, the specific operations performed by the base station in this disclosure may be performed by its upper node. In a network consisting of one or more network nodes including a base station, various operations performed for communication with a terminal are performed by the base station and other network nodes other than the base station (e.g., MME or It is clear that this can be done by at least one of the following: (conceivable, but not limited to) S-GW, etc.). Although the case where there is one network node other than the base station is illustrated above, it may be a combination of multiple other network nodes (for example, MME and S-GW).

Information, signals (information, etc.) can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.

The input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information that is input and output can be overwritten, updated, or added. The output information may be deleted. The input information may be sent to other devices.

Judgment may be made using a value expressed by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (for example, a predetermined value). (comparison with a value).

Each aspect/embodiment described in this disclosure may be used alone, in combination, or may be switched and used in accordance with execution. In addition, notification of prescribed information (for example, notification of "X") is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.

Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.

Additionally, software, instructions, information, etc. may be sent and received via a transmission medium. For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of

Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and the symbol may be a signal. Also, the signal may be a message. Further, a component carrier (CC) may also be called a carrier frequency, cell, frequency carrier, etc.

As used in this disclosure, the terms "system" and "network" are used interchangeably.

In addition, the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or using other corresponding information. may be expressed. For example, radio resources may be indicated by an index.

The names used for the parameters mentioned above are not restrictive in any respect. Furthermore, the mathematical formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (e.g. PUCCH, PDCCH, etc.) and information elements can be identified by any suitable designation, the various names assigned to these various channels and information elements are in no way exclusive designations. isn't it.

In this disclosure, "base station (BS)", "wireless base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", " "access point", "transmission point", "reception point", "transmission/reception point", "cell", "sector", "cell group", " The terms "carrier", "component carrier", etc. may be used interchangeably. A base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.

A base station can accommodate one or more (eg, three) cells (also called sectors). If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (Remote Radio Communication services can also be provided by Head: RRH).

The term "cell" or "sector" refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.

In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably. .

A mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like. The moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ). Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

Additionally, the base station in the present disclosure may be read as a mobile station (user terminal, hereinafter the same). For example, communication between a base station and a mobile station is replaced with communication between multiple mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). Regarding the configuration, each aspect/embodiment of the present disclosure may be applied. In this case, the mobile station may have the functions that the base station has. Further, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be replaced with side channels.

Similarly, the mobile station in the present disclosure may be read as a base station. In this case, the base station may have the functions that the mobile station has.

A radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe.

A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.

The numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transmission and reception. It may also indicate at least one of a specific filtering process performed by the device in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.

A slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. A slot may be a unit of time based on numerology.

A slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot. PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.

Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.

For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, and one slot or minislot may be called a TTI. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be. Note that the unit representing TTI may be called a slot, minislot, etc. instead of a subframe.

Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis. Note that the definition of TTI is not limited to this.

The TTI may be a unit of transmission time such as a channel-coded data packet (transport block), a code block, or a codeword, or may be a unit of processing such as scheduling or link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.

Note that when one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum time unit for scheduling. Further, the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.

A TTI with a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI that is shorter than the normal TTI may be referred to as a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

Note that long TTI (e.g., normal TTI, subframe, etc.) may be read as TTI with a time length exceeding 1ms, and short TTI (e.g., shortened TTI, etc.) may be interpreted as TTI with a time length of less than the long TTI and 1ms. It may also be read as a TTI having a TTI length of the above length.

A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the new merology, and may be 12, for example. The number of subcarriers included in an RB may be determined based on newerology.

Additionally, the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

Note that one or more RBs are classified into physical resource blocks (Physical RBs: PRBs), sub-carrier groups (SCGs), resource element groups (Resource Element Groups: REGs), PRB pairs, RB pairs, etc. May be called.

Additionally, a resource block may be configured by one or more resource elements (RE). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

Bandwidth Part (BWP) (also called partial bandwidth, etc.) refers to a subset of contiguous common resource blocks for a certain numerology in a certain carrier. good. Here, the common RB may be specified by an RB index based on a common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP). One or more BWPs may be configured within one carrier for the UE.

At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be replaced with "BWP".

The structures of radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB, The number of subcarriers, the number of symbols within a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.

The terms "connected", "coupled", or any variations thereof, refer to any connection or coupling, direct or indirect, between two or more elements and to each other. It can include the presence of one or more intermediate elements between two elements that are "connected" or "coupled." The bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access." As used in this disclosure, two elements may include one or more wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.

The reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot depending on the applied standard.

As used in this disclosure, the phrase "based on" does not mean "based solely on" unless explicitly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

"Means" in the configurations of each of the above devices may be replaced with "unit", "circuit", "device", etc.

As used in this disclosure, any reference to elements using the designations "first," "second," etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed therein or that the first element must precede the second element in any way.

Where "include", "including" and variations thereof are used in this disclosure, these terms, like the term "comprising," are inclusive. It is intended that Furthermore, the term "or" as used in this disclosure is not intended to be exclusive or.

In the present disclosure, when articles are added by translation, such as a, an, and the in English, the present disclosure may include that the nouns following these articles are plural.

As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of operations. "Judgment" and "decision" include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a "judgment" or "decision." In addition, "judgment" and "decision" refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access. (accessing) (for example, accessing data in memory) may include considering something as a "judgment" or "decision." In addition, "judgment" and "decision" refer to resolving, selecting, choosing, establishing, comparing, etc. as "judgment" and "decision". may be included. In other words, "judgment" and "decision" may include regarding some action as having been "judged" or "determined." Further, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted similarly to "different."

FIG. 10 shows an example of the configuration of the vehicle 2001. As shown in FIG. 10, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, an axle 2009, an electronic control unit 2010, Equipped with various sensors 2021 to 2029, an information service section 2012, and a communication module 2013.

The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.

The steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

The electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and communication port (IO port) 2033. Signals from various sensors 2021 to 2027 provided in the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

Signals from various sensors 2021 to 2028 include current signals from current sensor 2021 that senses motor current, front and rear wheel rotation speed signals obtained by rotation speed sensor 2022, and front wheel rotation speed signals obtained by air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal acquired by vehicle speed sensor 2024, acceleration signal acquired by acceleration sensor 2025, accelerator pedal depression amount signal acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028.

The Information Service Department 2012 provides various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide various information such as driving information, traffic information, and entertainment information, as well as one or more devices that control these devices. It consists of an ECU. The information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 1 using information acquired from an external device via the communication module 2013 and the like.

The driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g. GNSS, etc.), map information (e.g. high definition (HD) maps, autonomous vehicle (AV) maps, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden. It consists of various devices that provide functions for the system and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.

The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 1 via the communication port. For example, the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, which are included in the vehicle 2001, through the communication port 2033. Data is transmitted and received between the axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and the sensors 2021 to 2028.

The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication. Communication module 2013 may be located either inside or outside electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

The communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication. In addition, the communication module 2013 also receives the front wheel and rear wheel rotational speed signals acquired by the rotational speed sensor 2022, the front wheel and rear wheel air pressure signals acquired by the air pressure sensor 2023, and the vehicle speed sensor, which are input to the electronic control unit 2010. A vehicle speed signal obtained by the acceleration sensor 2024, an acceleration signal obtained by the acceleration sensor 2025, an accelerator pedal depression amount signal obtained by the accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by the brake pedal sensor 2026, and a shift lever. The shift lever operation signal acquired by the sensor 2027, the detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028 are also transmitted to the external device via wireless communication.

The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service section 2012 provided in the vehicle. Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, and left and right rear wheels provided in the vehicle 2001. 2008, axle 2009, sensors 2021 to 2028, etc. may be controlled.

<Additional notes>
The terminal of the embodiment may be configured as a terminal shown in each section below.
(Section 1)
a transmitter that transmits a preamble in random access;
a control unit that selects a transmission opportunity for the transmission unit to transmit the preamble;
Equipped with
The control unit selects a transmission opportunity that overlaps with a UL (UpLink) subband from among a plurality of subbands defined within a TDD (Time Division Duplex) band.
terminal.
(Section 2)
The control unit does not select a transmission opportunity that overlaps with a DL (DownLink) subband among the plurality of subbands.
The terminal according to claim 1.
(Section 3)
the transmission opportunity is mapped to a synchronization signal transmitted from a base station;
Transmission opportunities that overlap in bands in which the plurality of subbands are defined are mapped to the synchronization signal separately from transmission opportunities that overlap in bands in which the plurality of subbands are not defined;
The terminal according to claim 1 or 2.
(Section 4)
The control unit monitors control channel candidates in the UL subband if the preamble is not transmitted in the selected transmission opportunity.
A terminal according to any one of claims 1 to 3.
(Section 5)
a transmitting unit that transmits a message including an RRC (Radio Resource Control) connection request in random access;
A control unit that causes the transmitter to transmit the message in a UL (UpLink) subband among a plurality of subbands defined within a TDD (Time Division Duplex) band;
A terminal equipped with
(Section 6)
The control unit does not cause the transmission unit to transmit the message in a DL (DownLink) subband among the plurality of subbands.
The terminal according to claim 5.

Although the present disclosure has been described in detail above, it is clear for those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as determined by the claims. Therefore, the description of the present disclosure is for the purpose of illustrative explanation and is not intended to have any limiting meaning on the present disclosure.

10 Wireless communication system 20 NG-RAN
100 gNB
200 U.E.
210 Wireless signal transmission/reception section 220 Amplifier section 230 Modulation/demodulation section 240 Control signal/reference signal processing section 250 Encoding/decoding section 260 Data transmission/reception section 270 Control section 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Left and right front wheels 2008 Left and right rear wheels 2009 Axle 2010 Electronic control unit 2012 Information service department 2013 Communication module 2021 Current sensor 2022 Rotational speed sensor 2023 Air pressure sensor 2024 Vehicle speed Sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system section 2031 Microprocessor 2032 Memory (ROM, RAM)
2033 communication port

Claims (6)

1. a transmitter that transmits a preamble in random access;
   a control unit that selects a transmission opportunity for the transmission unit to transmit the preamble;
   Equipped with
   The control unit selects a transmission opportunity that overlaps with a UL (UpLink) subband from among a plurality of subbands defined within a TDD (Time Division Duplex) band.
   terminal.
2. The control unit does not select a transmission opportunity that overlaps with a DL (DownLink) subband among the plurality of subbands.
   The terminal according to claim 1.
3. the transmission opportunity is mapped to a synchronization signal transmitted from a base station;
   Transmission opportunities that overlap in bands in which the plurality of subbands are defined are mapped to the synchronization signal separately from transmission opportunities that overlap in bands in which the plurality of subbands are not defined;
   The terminal according to claim 1.
4. The control unit monitors control channel candidates in the UL subband if the preamble is not transmitted in the selected transmission opportunity.
   The terminal according to claim 1.
5. a transmitting unit that transmits a message including an RRC (Radio Resource Control) connection request in random access;
   A control unit that causes the transmitter to transmit the message in a UL (UpLink) subband among a plurality of subbands defined within a TDD (Time Division Duplex) band;
   A terminal equipped with
6. The control unit does not cause the transmission unit to transmit the message in a DL (DownLink) subband among the plurality of subbands.
   The terminal according to claim 5.

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