RU2793335C2 - Signal part configurations for v2x communication - Google Patents

Abstract

FIELD: communications.

SUBSTANCE: first information is received for configuring a direct connection bandwidth part (BWP) and second information is received for configuring one or more resource pools for transmission and/or reception over a direct connection. A physical straight connection control hub (PSCCH) and a physical straight shared control hub (PSSCH) are transmitted, wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for the PSCCH and PSSCH is configured for each of said one or more resource pools.

EFFECT: increase in the efficiency of data exchange.

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Description

Technical field

[0001] The present invention relates essentially to communication systems. More specifically, the present invention relates to signal configurations for V2X communications.

Prerequisites for the creation of the invention

[0002] Nowadays, wireless communication devices are becoming smaller and more powerful in order to meet consumer demands and improve portability and usability. Consumers have become addicted to wireless devices and have come to expect reliable service, extended coverage areas and enhanced functionality. The wireless communication system may provide communication between a number of wireless communication devices, each of which is served by a base station. A base station may be a device that communicates with wireless communication devices.

[0003] As wireless communication devices have evolved, it has been possible to improve throughput, speed, flexibility, and/or efficiency. However, improvements in throughput, speed, flexibility, and/or efficiency may come with some challenges.

[0004] For example, wireless communication devices may communicate with one or more devices using some communication structure. However, the communication structure used may provide only limited flexibility and/or efficiency. As illustrated herein, systems and methods that increase the flexibility and/or efficiency of communication may be preferred.

Statement of the Invention

[0005] In one example, a user equipment (UE) comprises: higher layer circuitry configured to receive information for configuring a direct connection (BWP) portion of the bandwidth (sidelink) and second information for configuring one or more resource pools for transmission and/ or direct connection reception; a transmission scheme configured to transmit a physical direct connection control channel (PSCCH) and a physical direct connection shared data channel (PSSCH), wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for the PSCCH and PSSCH is configured to each of one or more resource pools.

[0006] In one example, a base station (gNB) comprises: a higher layer circuit configured to transmit information for configuring a direct connection bandwidth portion (BWP) and second information for configuring one or more resource pools for direct connection communication; wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for the PSCCH and PSSCH is configured for each of the one or more resource pools.

[0007] In one example, a communication method performed by a user equipment (UE) includes: receiving information for configuring a direct connection bandwidth fraction (BWP) and second information for configuring one or more resource pools for transmission and/or reception over a direct connection; transmission of a physical direct connection control channel (PSCCH) and a physical direct connection shared data channel (PSSCH), wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for PSCCH and PSSCH is configured for each of one or more pools resources.

[0008] In one example, a communication method performed by a base station (gNB) includes transmitting information for configuring a direct connection bandwidth portion (BWP) and second information for configuring one or more resource pools for direct connection communication; wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for the PSCCH and PSSCH is configured for each of the one or more resource pools.

Brief description of graphic materials

[0009] [Fig. 1] In FIG. 1 is a block diagram illustrating one implementation of one or more base stations (gNBs) and one or more user equipments (UEs) in which signal configurations for V2X communication can be implemented.

[Fig. 2] In FIG. 2 is an example illustrating V2X services.

[Fig. 3] In FIG. 3 illustrates the timing relationship between uplink and downlink.

[Fig. 4] In FIG. 4 is a block diagram illustrating one embodiment of a UE.

[Fig. 5] In FIG. 5 is a diagram illustrating one example of a resource grid for a downlink.

[Fig. 6] In FIG. 6 is a diagram illustrating one example of an uplink resource grid.

[Fig. 7] In FIG. 7 shows examples of several numerical values.

[Fig. 8] In FIG. 8 shows examples of subframe structures for the numerical values shown in FIG. 7.

[Fig. 9] In FIG. 9 shows examples of intervals and subintervals.

[Fig. 10] In FIG. 10 shows examples of scheduling timelines.

[Fig. 11] In FIG. 11 shows examples of DL control channel monitoring areas.

[Fig. 12] In FIG. 12 shows examples of a DL control channel containing more than one control channel element.

[Fig. 13] In FIG. 13 shows examples of UL control channel structures.

[Fig. 14] In FIG. 14 is a block diagram illustrating one embodiment of gNB.

[Fig. 15] In FIG. 15 is a block diagram illustrating one embodiment of a UE.

[Fig. 16] In FIG. 16 shows various components that can be used in a UE.

[Fig. 17] In FIG. 17 shows various components that can be used in gNB.

[Fig. 18] In FIG. 18 is a block diagram illustrating one embodiment of a UE in which signal configurations for V2X communication may be implemented;

[Fig. 19] In FIG. 19 is a block diagram illustrating one embodiment of a gNB in which signal configurations for V2X communication may be implemented.

Description of Embodiments

[0010] User Equipment (UE) has been described. The UE includes a higher layer circuit configured to receive resource pool information for a direct connection. The UE also includes a transmitter circuit configured to transmit a physical direct connection control channel (PSCCH) and a physical direct connection shared data channel (PSSCH). The resource pool information includes information about whether transmission precoding is enabled or disabled. The transmitter circuitry is also configured to transmit the PSSCH based on whether transmission precoding is enabled or disabled.

[0011] In addition, a base station (gNB) is described. The gNB includes a transmitter circuit configured to transmit resource pool information for a direct connection. The gNB also includes a receiving circuit configured to receive the PSCCH and PSSCH. The resource pool information includes information about whether transmission precoding is enabled or disabled. The receiving scheme is also configured to receive the PSSCH based on whether transmission precoding is enabled or disabled.

[0012] In addition, a communication method by a UE is described. The method includes receiving information about a resource pool for a direct connection. The method also includes the transmission of PSCCH and PSSCH. The resource pool information includes information about whether transmission precoding is enabled or disabled. The method further includes transmitting the PSSCH based on whether transmission precoding is enabled or disabled.

[0013] In addition, a method of communication via gNB is described. The method includes passing information about a resource pool for a direct connection. The method also includes receiving PSCCH and PSSCH. The resource pool information includes information about whether transmission precoding is enabled or disabled. The method further includes receiving the PSSCH based on whether transmission precoding is enabled or disabled.

[0014] The 3rd Generation Partnership Project, also referred to as 3GPP, is a collaborative agreement to define globally applicable specifications and technical reports for 3rd and 4th generation wireless communication systems. 3GPP may define characteristics for next generation mobile communication networks, systems and devices.

[0015] The 3GPP Long Term Evolution (LTE) Standard is the name given to a project to improve the Universal Mobile Telecommunications System (UMTS) mobile device or telephone standard to meet future requirements. In one aspect, the UMTS system is modified to provide support and specification for Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN).

[0016] At least some aspects of the systems and methods described herein may be described in connection with 3GPP LTE, LTE-Advanced (LTE-A), and other standards (e.g., 3GPP Releases 8, 9, 10, 11, and /or 12). However, the scope of the present description should not be limited in this regard. At least some aspects of the systems and methods described herein can be used in other types of wireless communication systems.

[0017] A wireless communications device may be an electronic device used to transmit voice and/or data to a base station, which may in turn communicate with a network of devices (e.g., the public switched telephone network (PSTN), the Internet, etc.). . P.). In describing systems and methods herein, a wireless communication device may alternatively be referred to as a mobile station, UE, access terminal, subscriber station, mobile terminal, remote station, user terminal, terminal, user equipment, mobile device, and the like. Examples of wireless communication devices include cellular phones, smartphones, personal digital assistants (PDAs), laptops, netbooks, e-readers, wireless modems, and the like. In 3GPP specifications, a wireless communication device is commonly referred to as a UE. However, since the scope of the present description should not be limited by the 3GPP standards, the terms UE and the term "wireless device" can be used interchangeably herein, with the more general term "wireless device" being used. A UE may also be referred to more generally as a terminal device.

[0018] In the 3GPP specification, a base station is commonly referred to as Node B, Evolved Node B (eNB), Home Enhanced or Evolved Node B (HeNB), or some other similar terminology. Since the scope of the description should not be limited by the 3GPP standards, the terms "base station", "Node B", "eNB", and "HeNB" can be used interchangeably herein, with the more general term "base station" being understood. In addition, the term "base station" may be used to refer to an access point. An access point may be an electronic device that provides wireless communication devices with access to a network (eg, a local area network (LAN), the Internet, etc.). The term "communication device" may be used to refer to a wireless communication device and/or a base station. An eNB may also be referred to more generally as a base station device.

[0019] It should be noted that the term "cell" as used herein can be any communication channel that is specified through standardization or regulated by regulatory authorities for use as an International Mobile Telecommunications Advanced (IMT-Advanced) standard, all or a subset of them may be accepted by 3GPP as licensed bands (eg frequency bands) to be used for data exchange between the eNB and the UE. It should also be noted that in the general description of E-UTRA and E-UTRAN, the term "cell" used herein can be defined as "a combination of downlink and optionally uplink resources". The relationship between the carrier frequency of the downlink resources and the carrier frequency of the uplink resources may be indicated in the system information transmitted on the downlink resources.

[0020] "Configured cells" are those cells for which the UE is aware and for which it has permission from the eNB to transmit or receive information. "Configured cell(s)" may be a serving cell(s). The UE may receive system information and perform the required measurements on all configured cells. The "configured cell(s)" for a radio connection may include a primary cell (PCell) and/or none, one or more secondary cells (SCell). "Activated cells" are those configured cells on which the UE transmits and receives. Thus, activated cells are those cells for which the UE monitors the Physical Downlink Control Channel (PDCCH), and in downlink transmission, those cells for which the UE decodes the Physical Shared Channel for downlink data transmission. (PDSC). "Deactivated cells" are those configured cells for which the UE does not control the transmission PDCCH. It should be noted that "cell" can be described by various indicators. For example, a "cell" may have temporal, spatial (eg, geographic), and frequency characteristics.

[0021] Fifth generation (5G) cellular communications (also referred to as "new radio network", "new radio access technology", or NR) by 3GPP uses time/frequency/space resources to enable advanced mobile broadband (eMBB) and ultra-reliable communication with low latency (URLLC), as well as services such as machine type mass communication (MMTC). A new radio network (NR) base station may be referred to as a gNB. gNB can also be referred to more generally as a base station device.

[0022] Various examples of the systems and methods described herein are described below with reference to the drawings, where like reference numerals may indicate similar functional elements. The systems and methods that are substantially described and illustrated in the figures herein may be configured and developed in a wide variety of different implementations. Thus, the following more detailed description of several embodiments that are presented in the figures is not intended to limit the scope of the claimed invention, but merely represents systems and methods.

[0023] In FIG. 1 is a block diagram illustrating one implementation of one or more base stations (gNBs) 160 and one or more user equipments (UEs) 102 in which signal configurations for V2X communication can be implemented. One or more UEs 102 communicate with one or more gNBs 160 using one or more antennas 122a-n. For example, UE 102 transmits electromagnetic signals to gNB 160 and receives electromagnetic signals from gNB 160 using one or more antennas 122a-n. gNB 160 communicates with UE 102 using one or more antennas 180a-n.

[0024] To communicate with each other, UE 102 and gNB 160 may use one or more channels 119, 121. For example, UE 102 may transmit information or data to gNB 160 using one or more uplink channels 121. Examples of uplink channels 121 include PUCCH (Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Data Channel), PRACH (Physical Random Access Channel), and the like. For example, channels 121 uplink (eg, PUSCH) can be used to transmit UL data (ie, transport block(s), MAC PDUs, and/or UL-SCH (Uplink Shared Channel)).

[0025] In this context, UL data may include URLLC data. The URLLC data may be UL-SCH data. In this case, a URLLC-PUSCH (ie, a physical shared channel for uplink data transmission other than PUSCH) may be defined to transmit URLLC data. For ease of description, the term "PUSCH" may mean any of (1) PUSCH only (e.g. regular PUSCH, not URLLC-PUSCH, etc.), (2) PUSCH or URLLC-PUSCH, (3) PUSCH and URLLC-PUSCH or (4) URLLC-PUSCH only (eg, other than normal PUSCH).

[0026] Also, for example, the uplink channels 121 can be used to send a hybrid automatic repeat request-ACK (HARQ-ACK), channel state information (CSI), and/or scheduling request (SR). The HARQ-ACK may include information indicating a positive acknowledgment (ACK) or a negative acknowledgment (NACK) for DL data (i.e., transport unit(s)), a media access control protocol data unit (MAC PDU). ) and/or DL-SCH (downlink shared channel)).

[0027] The CSI may include information indicating the quality of the downlink. The SR may be used to request UL-SCH (Uplink Shared Channel) resources for new transmission and/or retransmission. In other words, the SR may be used to request UL resources for UL data transmission.

[0028] One or more gNB 160 may also transmit information or data to one or more UE 102, for example, using one or more downlink channels 119. In the examples, downlink channels 119 include PDCCH, PDSCH, and the like. Other types of channels may be used. The PDCCH may be used to carry downlink control information (DCI).

[0029] Each of one or more UEs 102 may include one or more transceivers 118, one or more demodulators 114, one or more decoders 108, one or more encoders 150, one or more modulators 154, a data buffer 104, and a module 124 UE operations. For example, UE 102 may implement one or more receive and/or transmit paths. For convenience, only one transceiver 118, decoder 108, demodulator 114, encoder 150, and modulator 154 are shown at UE 102, although many parallel elements (eg, transceivers 118, decoders 108, demodulators 114, encoders 150, and modulators 154) may be implemented.

[0030] Transceiver 118 may include one or more receivers 120 and one or more transmitters 158. One or more receivers 120 may receive signals from gNB 160 using one or more antennas 122a-n. For example, receiver 120 may receive and downconvert signals to generate one or more received signals 116. One or more received signals 116 may be provided to demodulator 114. One or more transmitters 158 may signal to gNB 160 using one or more antennas 122a-n. For example, one or more transmitters 158 may upconvert and transmit one or more modulated signals 156.

[0031] Demodulator 114 may demodulate one or more received signals 116 to create one or more demodulated signals 112. One or more demodulated signals 112 may be provided to decoder 108. To decode signals, UE 102 may use decoder 108. Decoder 108 may generate decoded signals 110, which may include UE decoded signal 106 (also referred to as first UE decoded signal 106). For example, the first signal 106 decoded by the UE may contain data about the received payload, which may be stored in the data buffer 104. The other signal included in the decoded signals 110 (also referred to as the second UE-decoded signal 110) may contain overhead and/or control data. For example, second UE-decoded signal 110 may provide data that UE operations module 124 may use to perform one or more operations.

[0032] Typically, UE operations module 124 may enable UE 102 to communicate with one or more gNBs 160. UE operations module 124 may include UE scheduling module 126.

[0033] The UE scheduling unit 126 may perform signal configurations for the V2X communication technology. The 3GPP V2X Services will be used to transport the Basic Security Message(s) (BSM) according to the SAE J2735 standard. The BSM consists of two parts: Part 1 contains basic data items (eg vehicle size, position, speed, yaw acceleration, brake system status) and is transmitted approximately 10 times per second. Part 2 contains a variable set of data elements taken from many optional data elements and is transmitted less frequently than part 1. BSM is expected to have a transmission range of ~1000 meters and be optimized for the localized broadcast required by V2V security applications.

[0034] Rel-14 V2X LTE (also known as V2X LTE) supports a basic set of requirements for a V2X service as specified in TR 22.885 that are considered sufficient for a basic road safety service. A vehicle connected via V2X LTE (eg, a vehicle configured with UE 102 that supports V2X applications) can directly exchange status information via the PC5 interface. It should be noted that the direct connection defines procedures for realizing UE-UE communication with one frequency hop, similarly to uplink and downlink, which define procedures for UE-base station (BS) and BS-UE access, respectively. Along the same lines, PC5 has been introduced as a new direct UE interface similar to the Uu interface (UE-BS/BS-UE). Thus, the PC5 interface is also known as a direct connection at the physical layer, such as position, speed, and heading, to other nearby vehicles, infrastructure nodes, and/or pedestrians that are also connected via V2X LTE.

[0035] Rel-16 NR provides higher throughput, lower latency, and higher reliability than LTE through a combination of protocol scaling options, use of higher frequency bands (e.g., millimeter wave frequencies), and choice of wider subcarrier spacing ( SCS) (eg 30 kHz, 60 kHz, 120 kHz and/or 240 kHz in addition to 15 kHz used in LTE) to suit higher frequency bands and beam steering (BM). Rel-16 NR is expected to provide an enhanced V2X service (also referred to as V2X NR) that leverages the higher bandwidth, lower latency, and higher reliability provided by Rel-16 NR data transport services.

[0036] Thus, it is desirable to provide a V2X NR UE 102 with a process configuring the physical layer transmission of different transmission beams with different SCSs according to the available V2X bandwidths.

[0037] Approximately two large frequency ranges specified in the 3GPP specification are defined in NR. One is below 6 GHz (also called sub-6 GHz or FR1). The other is above 6 GHz (also called millimeter wave band or FR2). Depending on the frequency bands, the maximum bandwidth and subcarrier spacing vary. For FR1, the maximum bandwidth is 100 MHz, and for FR2, the maximum bandwidth is 400 MHz. Some subcarrier spacings (for example, 15 kHz and 30 kHz) can only be used in FR1, some subcarrier spacings (for example, 120 kHz and 240 kHz) can only be used in FR2, and some subcarrier spacings (for example, 60 kHz) can only be used use in both the FR1 and FR2 bands.

[0038] As mentioned above, 3GPP defines two types of frequency bands. The sub-6 GHz band is called FR1 and the millimeter wave band is called FR2. The exact frequency range for FR1 (sub-6 GHz) and FR2 (millimeter wave) can be determined from Table 1. Table 2 provides examples of NR operating bands in FR1. Table 3 shows examples of NR operating bands in FR2. Table 4 lists applicable sync signal (SS) raster entries for each operating band (FR1). Table 5 lists the applicable SS raster records for each operating band (FR2).

[0039]

Frequency band designation Corresponding frequency range FR1 450 MHz - 6000 MHz FR2 24 250 MHz - 52 600 MHz

Table 1

Uplink Operating Band (UL) Downlink (DL) operating band working BS reception BS transmission duplex mode band UE transmission UE reception NR FUL_low-FUL_high Full b.w. FUL_low-FUL_high Full b.w. nl 1920 MHz - 1980 MHz 60 2110 MHz - 2170 MHz 60 FDD n2 1850 MHz - 1910 MHz 60 1930 MHz - 1990 MHz 60 FDD n3 1710 MHz - 1785 MHz 75 1805 MHz - 1880 MHz 75 FDD n5 824-849 MHz 25 869 MHz - 894 MHz 25 FDD n7 2500 MHz - 2570 MHz 70 2620 MHz - 2690 MHz 70 FDD n8 880 MHz - 915 MHz 35 925 MHz - 960 MHz 35 FDD n20 832 MHz - 862 MHz thirty 791 MHz - 821 MHz thirty FDD n28 703 MHz - 748 MHz 45 758 MHz - 803 MHz 45 FDD n38 2570 MHz - 2620 MHz 50 2570 MHz - 2620 MHz 50 TDD n41 2496 MHz - 2690 MHz 194 2496 MHz - 2690 MHz 194 TDD n50 1432 MHz - 1517 MHz 85 1432 MHz - 1517 MHz 85 TDD n51 1427 MHz - 1432 MHz 5 1427 MHz - 1432 MHz 5 TDD n66 1710 MHz - 1780 MHz 70 2110 MHz - 2200 MHz 90 FDD n70 1695 MHz - 1710 MHz 15 1995 MHz - 2020 MHz 25 FDD n71 663 MHz - 698 MHz 35 617 MHz - 652 MHz 35 FDD n74 1427 MHz - 1470 MHz 43 1475 MHz - 1518 MHz 43 FDD n75 N/A 1432 MHz - 1517 MHz 85 SDL n76 N/A 1427 MHz - 1432 MHz 5 SDL n78 3300 MHz - 3800 MHz 500 3300 MHz - 3800 MHz 500 TDD n77 3300 MHz - 4200 MHz 900 3300 MHz - 4200 MHz 900 TDD n79 4400 MHz - 5000 MHz 600 4400 MHz - 5000 MHz 600 TDD n80 1710 MHz - 1785 MHz 75 N/A SUL n81 880 MHz - 915 MHz 35 N/A SUL n82 832 MHz - 862 MHz thirty N/A SUL n83 703 MHz - 748 MHz 45 N/A SUL n84 1920 MHz - 1980 MHz 60 N/A SUL

table 2

Operating band NR Uplink Operating Band (UL) Downlink (DL) operating band duplex mode BS reception BS transmission UE transmission UE reception FUL_low-FUL_high Full b.w. FUL_low-FUL_high Full b.w. n257 26500MHz - 29500MHz 3000 26500MHz - 29500MHz 3000 TDD n258 24 250 MHz - 27 500 MHz 3260 24 250 MHz - 27 500 MHz 3260 TDD n260 37,000 MHz - 40,000 MHz 3000 37,000 MHz - 40,000 MHz 3000 TDD

Table 3

Operating band NR SCS block SS SS block template GSCN range (first - <Step size> - last) n1 15 kHz Case A [7039 - <1> - 7224] n2 15 kHz Case A [6439 - <1> - 6624] n3 15 kHz Case A [6022 - <1> - 6258] n5 15 kHz Case A [2902 - <1> - 2973] 30 kHz Case B [2911 - <1> - 2964] n7 15 kHz Case A [8740 - <1> - 8958] n8 15 kHz Case A [3091 - <1> - 3192] n20 15 kHz Case A [2644 - <1> - 2727] n28 15 kHz Case A [2533 - <1> - 2667] n38 15 kHz Case A [8572 - <1> - 8958] n41 15 kHz Case A [9069] - <TBD> - [9199] 30 kHz Case C [9070 - <1> - 9198] n50 15 kHz Case A [4780 - <1> - 5049] n51 15 kHz Case A [4762 - <1> - 4764] n66 15 kHz Case A [7039 - <1> - 7326] 30 kHz Case B [7048 - <1> - 7317] n70 15 kHz Case A [6655 - <1> - 6726] n71 15 kHz Case A [2062 - <1> - 2166] n74 15 kHz Case A [4924 - <1> - 5052] n75 15 kHz Case A [4780 - <1> - 5049] n76 15 kHz Case A [4762 - <1> - 4764] n77 30 kHz Case C [9628 - <1> - 10247] n78 30 kHz Case C [9628 - <1> - 9969] n79 30 kHz Case C [10 393] - <TBD> - [10 802]

Table 4

Operating band NR SCS block SS SS block template GSCN range (first - <Step size> - last) n257 120 kHz Case D [24 306 - <1> - 24 476] 240 kHz Case E [24 308 - <2> - 24 474] n258 120 kHz Case D [24 175 - <1> - 24 361] 240 kHz Case E [24 176 - <2> - 24 360] n260 120 kHz Case D [24 913 - <1> - 25 084] 240 kHz Case E [24 916 - <2> - 25 080]

Table 5

[0040] The systems and methods described herein cover aspects of basic configurations (RS) for V2X communication in FR1 and FR2. This document describes enhancements to V2X NRs (eg, 3GPP Rel-16 V2X, V2X service) for physical direct connection control channel (PSCCH) and/or physical shared data channel (PSSCH) reference signal configurations.

[0041] The demodulation reference signal may be configured by a system information block(s) (SIB) or dedicated radio resource control (RRC) message(s). In addition, UE 102 may be configured with one or multiple resource pools. Each resource pool may have any one demodulation reference configuration associated with it. In addition, NR supports two types of signals: one signal is CP-OFDM and the other signal is DFT-S-OFDM. Each resource pool can be associated with any one signal type. An example of V2X services is shown in FIG. 2.

[0042] For the radio link between the base station (gNB) 160 and the first or second UE 102, the following physical channels can be used (the downlink is the direction of transmission from gNB 160 to UE 102, and the uplink is the direction of transmission from UE 102 to gNB 160): physical broadcast channel (PBCH); Physical Downlink Control Channel (PDCCH); Physical Shared Channel for Data Downlink (PDSCH); a physical uplink control channel (PUCCH); and/or a physical uplink shared data channel (PUSCH).

[0043] The PBCH can be used to broadcast essential system information. The PBCH may include a Service Information Block (MIB) and some other information. The PDCCH may be used to transmit downlink control information, and the PDCCH may include downlink control information (DCI). The PDSCH can be used to carry Remaining Minimum System Information (RMSI), Other System Information (OSI), paging data, and downlink data (DL-SCH (Downlink Shared Channel)). The PUCCH may be used to transmit uplink control information (UCI). PUSCH may be used to transmit UL-SCH (Uplink Shared Channel) uplink data, and PUSCH may be used to transmit UCI.

[0044] For the radio link between the base station (gNB) 160 and the first or second UE 102, the following physical signals can be used: primary synchronization signal (PSS); secondary synchronization signal (SSS); tracking reference signal (TRS); channel state information reference signal (CSI-RS); demodulation reference signal (DMRS); a phase tracking reference signal (PTRS); and/or a sounding reference signal (SRS).

[0045] PSS and SSS can be used for time/frequency synchronization and physical cell identifier (PCID) determination/discovery. The PSS, SSS, and PBCH may be multiplexed as an SS/PBCH block, and one or more SS/PBCH blocks may be transmitted on a serving cell. The TRS may be used for channel tracking at the UE side and transmitted on the downlink, and the TRS may be a single CSI-RS resource configuration. CSI-RS can be used for channel state information (CSI) measurements and transmitted on the downlink, and CSI-RS includes a non-zero power CSI-RS for channel measurement or interference measurement, zero power CSI-RS (CSI-RS ZP ) to measure interference. DMRS may be used to demodulate physical channels, and DMRS may be defined for each channel. PTRS can be used for phase tracking to compensate for phase noise and transmitted using DMRS and PDSCH/PUSCH. PTRS can be configured in FR2. The SRS may be used for channel sounding in the uplink.

[0046] The DCI may include PDSCH or PUSCH scheduling information, timing of the HARQ-ACK (Hybrid Automatic Repeat Request) bit(s), as well as modulation and coding schemes (MCS), DMRS port information, etc. n. The UCI may include the HARQ-ACK and CSI bits. The CSI may include one or more of CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Index), LI (Level Indicator), and CRI (CSI-RS Index).

[0047] The following physical channels may be defined to support V2X communication: Direct Connected Broadcast Physical Channel (PSBCH), Direct Connected Physical Control Channel (PSCCH), and/or Direct Connected Physical Shared Data Channel (PSSCH).

[0048] The PSBCH may be used to convey forward connection frame number information, etc. The PSCCH may be used to indicate direct connection control information (SCI), and the SCI may indicate resource(s) allocation (scheduling) information for the PSSCH, modulation and coding schemes, version(s) of redundancy. The transmitter of the first UE 102 (eg, UE 1) may transmit the PSCCH to the receiver of UE 102 (eg, UE 2).

[0049] The following physical signals can be defined to support V2X communication: Primary Direct Link Synchronization Signal (PSSS), Secondary Direct Link Synchronization Signal (SSSS), Tracking Reference Signal (TRS), Channel State Information Reference Signal ( CSI-RS), demodulation reference signal (DMRS), phase tracking reference signal (PTRS), and/or sounding reference signal (SRS). The PSSS and SSSS may be used for time/frequency synchronization and synchronization source identification/discovery, and the PSSS, SSSS, and PSBCH may be multiplexed as an SSS/PSBCH block.

[0050] The present document also describes numerical values, frame and slot structures, resource blocks (RB), and portions of bandwidth (BWP). In the present description, unless otherwise indicated, the size of the various fields in the time domain is expressed in units of time T _c =l / (∆f _max • N _f ), where ∆f _max =480 • 10 ³ Hz and N _f =4096. Constant k=T _s /T _c =64, where T _s =1 / (∆f _ref • N _f,ref ), ∆f _ref =15 • 10 ³ Hz and N _f,ref =2048.

[0051] A plurality of OFDM numerical values are supported, as shown in Table 6, in which m and the cyclic prefix for the bandwidth portion are obtained from the higher layer parameter subcarrierSpacing and cyclicPrefix, respectively.

[0052]

m ∆f =2 ^m • 15 [kHz] Cyclic prefix 0 15 Normal 1 thirty Normal 2 60 normal, extended 3 120 Normal 4 240 Normal

Table 6

. Каждый кадр может быть разделен на два полукадра равного размера из пяти подкадров, где каждый полукадр 0 включает в себя подкадры 0-4, а каждый полукадр 1 включает в себя подкадры 5-9. На несущей может существовать один набор кадров в восходящей линии связи и один набор кадров - в нисходящей линии связи. На Фиг. 3 представлена временная зависимость между восходящей линией связи и нисходящей линией связи. В таблице 7 приведено время перехода между передачей и приемом (N _{TX_RX} ) и время перехода между приемом и передачей (N _{RX_TX} ) для FR1 и FR2.[0053] This document describes the timing for uplink and downlink and transition time from transmission to reception and from reception to transmission. The downlink and uplink transmissions can be arranged in frames of duration T _f = (∆f _max • N _f /1000) • T _c =10 ms, each including ten subframes of duration T _sf = (∆f _max • N _f /1000) • T _c =1 ms. The number of consecutive OFDM symbols per subframe may be

. Each frame may be divided into two equally sized half-frames of five subframes, where each half-frame 0 includes subframes 0-4 and each half-frame 1 includes subframes 5-9. There may be one set of frames on the uplink and one set of frames on the downlink on a carrier. On FIG. 3 shows the time relationship between uplink and downlink. Table 7 shows the transition time between transmit and receive ( N _{TX_RX} ) and the transition time between receive and transmit ( N _{RX_TX} ) for FR1 and FR2.

Transition time FR1 FR2 N _{TX_RX} 25 600 13 792 N _{RX_TX} 25 600 13 792

Table 7

[0054] Uplink frame number i for transmission from UE 102 may start N _TA = (N _TA +N _{TA offset} ) • T _c prior to the start of the corresponding downlink frame at UE 102. The values of N _{TA, offset} are given in Table 7.

в порядке возрастания в пределах одного подкадра и

в порядке возрастания в пределах одного кадра. В интервале имеется

последовательных символов OFDM, где

зависит от циклического префикса, как указано в таблицах 8 и 9, соответственно. Начало интервала

в подкадре согласовано по времени с началом символа OFDM

в том же подкадре. В таблице 8 представлено количество символов OFDM на интервал, интервалов на кадр и интервалов на подкадр для нормального циклического префикса. В таблице 9 представлено количество символов OFDM на интервал, интервалов на кадр и интервалов на подкадр для расширенного циклического префикса.[0055] For a configuration of m subcarrier spacing, intervals can be numbered

in ascending order within one subframe and

in ascending order within one frame. The interval has

consecutive OFDM symbols, where

depends on the cyclic prefix, as indicated in tables 8 and 9, respectively. Interval start

in the subframe is timed to the start of the OFDM symbol

in the same subframe. Table 8 shows the number of OFDM symbols per slot, slots per frame, and slots per subframe for the normal cyclic prefix. Table 9 shows the number of OFDM symbols per slot, slots per frame, and slots per subframe for the extended cyclic prefix.

m

0 14 10 1 1 14 20 2 2 14 40 4 3 14 80 8 4 14 160 16

Table 8

m

2 12 40 4

Table 9

[0056] OFDM symbols in an interval can be classified as "downlink", "soft link", or "uplink". In an interval in a downlink frame, UE 102 may assume that downlink transmissions only occur on downlink or softlink symbols. In an interval in an uplink frame, UE 102 may only transmit on uplink or softlink symbols.

[0057] It is expected that UE 102 not capable of full duplex communication will not transmit on the uplink before, than through N_Rx-Tx • T_c after the end of the last received downlink symbol in the same cell, where N_Rx-Tx is shown in Table 7. It is expected that UE 102 not capable of full duplex communication will not receive data on the downlink before N_Rx-Tx • T_c after the end of the last transmitted uplink symbol in the same cell, where N_Tx-Rx shown in table 7.

[0058] An antenna port may be determined such that a channel on which a symbol is transmitted on the antenna port can be received on a channel on which another symbol is transmitted on the same antenna port. For DMRS associated with PDSCH, a channel carrying a PDSCH symbol on one antenna port can be received on a channel carrying a DMRS symbol on the same antenna port only if the two symbols are within the same resource as the scheduled PDSCH, in the same slot and in the same Physical Resource Block Group (PRG).

[0059] Two antenna ports are said to be quasi-co-located if the large scale properties of a channel carrying a symbol at one antenna port can be received over a channel carrying a symbol at another antenna port. The large scale property may include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and Rx spatial parameters.

поднесущих и

cимволов OFDM, начиная с общего ресурсного блока

, указанного посредством сигнализации более высокого уровня. Для каждого направления передачи (восходящей или нисходящей линии связи) может существовать один набор ресурсных сеток, где подстрочные индексы x DL и UL обозначают нисходящую линию связи и восходящую линию связи, соответственно. При отсутствии риска путаницы подстрочный индекс x можно отбрасывать. Для данного порта p антенны может существовать одна ресурсная сетка, конфигурация м разноса поднесущих и направление передачи (по нисходящей или восходящей линии связи).[0060] For each numerical value and carrier, a resource grid can be determined from

subcarriers and

OFDM symbols starting from a common resource block

indicated by higher layer signaling. For each direction of transmission (uplink or downlink) there may be one set of resource grids, where subscripts x DL and UL denote downlink and uplink, respectively. If there is no risk of confusion, the subscript x may be dropped. For a given antenna port p, there may be one resource mesh, a subcarrier spacing configuration m, and a transmission direction (downlink or uplink).

для конфигурации м разноса поднесущих можно задавать с помощью параметра более высокого уровня carrierBandwidth в IE SCS-SpecificCarrier. Начальное положение

для конфигурации м разноса поднесущих можно задавать с помощью параметра более высокого уровня offsetToCarrier в IE SCS-SpecificCarrier.[0061] Carrier bandwidth

for configuration, m subcarrier spacing can be set using the carrierBandwidth higher level parameter in the SCS-SpecificCarrier IE. Start position

for the configuration, m subcarrier spacing can be specified using the offsetToCarrier higher layer parameter in the SCS-SpecificCarrier IE.

[0062] The frequency location of a subcarrier is tied to the center frequency of that subcarrier. For the downlink, the higher layer DirectCurrentLocation parameter in the SCS-SpecificCarrier IE may indicate the location of the transmitter DC subcarrier in the downlink for each of the numerical values configured in the downlink. Values in the range 0-3299 represent the DC subcarrier number, while a value of 3300 indicates that the DC subcarrier is outside the resource grid.

[0063] For the uplink, the higher layer DirectCurrentLocation parameter in the UplinkTxDirectCurrentBWP IE may indicate the transmitter's DC subcarrier location in the uplink for each of the configured portions of the bandwidth, including whether the DC subcarrier location is offset by 7.5 kHz from the center of the specified subcarrier . Values in the range 0-3299 are the DC subcarrier number, with a value of 3300 indicating that the subcarrier is outside the resource grid and a value of 3301 indicating that the position of the DC subcarrier in the uplink is undefined.

. При отсутствии риска возникновения путаницы или отсутствии указания конкретного порта антенны или разноса поднесущих индексы p и м можно отбрасывать что в результате дает

или a_k,l.[0064] Each element in the resource grid for antenna port p and subcarrier spacing configuration m is referred to as a resource element and is uniquely identified by (k, l) _{p, m} , where k is an index in the frequency domain and l refers to a symbol position in time domain relative to some reference point. Resource element (k, l) _{p, m} corresponds to some physical resource and complex value

. If there is no risk of confusion, or no indication of a specific antenna port or subcarrier spacing, the indices p and m can be discarded, resulting in

or a _k,l .

[0065] In the downlink, a cyclic prefix (CP) OFDM access scheme, which may also be referred to as CP-OFDM, may be used. A downlink radio frame may include a plurality of downlink resource block (RB) pairs, also referred to as physical resource blocks (PRBs). The downlink RB pair is a block for assigning downlink radio resources determined by a predetermined bandwidth (RB bandwidth) and a time interval. The downlink RB pair may include two downlink RBs that are continuous in the time domain. In a further or alternative embodiment, the downlink RB may include twelve subcarriers in the frequency domain and seven (in the case of a normal CP) or six (in the case of an extended CP) OFDM symbols in the time domain. An area defined by one subcarrier in the frequency domain and one OFDM symbol in the time domain may be referred to as a resource element (RE) and may be uniquely identified by a pair of indices (k, l), where k and l are indices in the frequency and time domain, respectively. .

[0066] In the uplink, in addition to CP-OFDM, a Single Carrier Frequency Division Multiple Access (SC-FDMA) scheme, also referred to as Discrete Fourier Transform Extended OFDM (DFT-S-OFDM), can be used. An uplink radio frame may include a plurality of uplink resource block pairs. The uplink RB pair is a block for assigning uplink radio resources determined by a predetermined bandwidth (RB bandwidth) and a time interval. The pair of uplink RBs may include two uplink RBs that are continuous in the time domain. The uplink RB may include twelve subcarriers in the frequency domain and seven (in case of normal CP) or six (in case of extended CP) OFDM/DFT-S-OFDM symbols in the time domain. An area defined by one subcarrier in the frequency domain and one OFDM/DFT-S-OFDM symbol in the time domain may be referred to as a resource element (RE) and may be uniquely identified in an interval by a pair of indices (k, l), where k and l are indices in frequency and time domain, respectively. CP-OFDM can be defined as the case where transform precoding is not enabled/disabled. DFT-S-OFDM can be defined as the case where transform precoding is enabled.

12 последовательных поднесущих в частотной области. Точка A служит общей опорной точкой для сеток ресурсных блоков и может быть получена на основании следующего. Смещение offsetToPointA для нисходящей линии связи PCell представляет собой смещение частоты между точкой A и самой низкой поднесущей самого низкого ресурсного блока, перекрывающегося с блоком SS/PBCH, используемым UE для начального выбора соты, выраженное в единицах ресурсных блоков, при этом предполагается, что разнос поднесущих для FR1 составляет 15 кГц, а разнос поднесущих для FR2 составляет 60 кГц. Частота absoluteFrequencyPointA для всех других случаев, где absoluteFrequencyPointA представляет местоположение частоты точки A, выражается как ARFCN.[0067] Point A is also described herein. A resource block is a block defined as =

12 consecutive subcarriers in the frequency domain. Point A serves as a common reference point for grids of resource blocks and can be obtained based on the following. The offsetToPointA for the PCell downlink is the frequency offset between point A and the lowest subcarrier of the lowest resource block overlapping with the SS/PBCH block used by the UE for initial cell selection, expressed in units of resource blocks, assuming that the subcarrier spacing is for FR1 is 15 kHz and the subcarrier spacing for FR2 is 60 kHz. The frequency of absoluteFrequencyPointA for all other cases, where absoluteFrequencyPointA represents the frequency location of point A, is expressed as ARFCN.

в частотной области и ресурсными элементами (k, l) для конфигурации м разноса поднесущих может быть задано выражением

= [k /

], где k определено относительно точки A таким образом, что k=0 соответствует поднесущей с центром около точки A.[0068] The common resource blocks are numbered from 0 and up in the frequency domain for the subcarrier spacing pattern µ . Center of subcarrier 0 of common resource block 0 for subcarrier spacing configuration m may coincide with point A. Relationship between common resource block number

in the frequency domain and resource elements (k, l) for the m subcarrier spacing configuration can be given by

= [k /

], where k is defined relative to point A such that k=0 corresponds to a subcarrier centered around point A.

, где i представляет собой номер части ширины полосы. Взаимосвязь между физическим ресурсным блоком n_PRB в части i ширины полосы и общим ресурсным блоком n_CRB задается выражением

, где

представляет собой общий ресурсный блок, в котором начинается часть ширины полосы относительно общего ресурсного блока 0.[0069] Physical resource blocks may be formed in terms of bandwidth and numbered from 0 to

, where i is the number of the part of the bandwidth. The relationship between the physical resource block n _PRB in the bandwidth portion i and the total resource block n _CRB is given by

, Where

represents the common resource block at which the portion of the bandwidth relative to the common resource block 0 begins.

В этом случае i представляет собой номер части ширины полосы.[0070] Virtual resource blocks may be formed in terms of bandwidth and numbered from 0 to

In this case, i is the part number of the bandwidth.

и количество ресурсных блоков

в части ширины полосы могут удовлетворять соотношению

и

, соответственно.[0071] The bandwidth portion is a subset of contiguous common resource blocks for a given numerical value m ₁ in the bandwidth portion i on a given carrier. Start position

and the number of resource blocks

in terms of the bandwidth can satisfy the relation

And

, respectively.

[0072] The UE 102 may be configured with up to four downlink bandwidth portions, with any one downlink bandwidth portion active at any given time. UE 102 is not designed to receive PDSCH, PDCCH or CSI-RS (other than RRM) outside of the active portion of the bandwidth.

[0073] The UE 102 may be configured with up to four uplink bandwidth portions, with any one uplink bandwidth portion active at any given time. If UE 102 is configured with the supplemental uplink, UE 102 may be further configured with up to four fractions of bandwidth in the supplemental uplink, with any one incremental fraction of uplink bandwidth active at any given time. UE 102 cannot transmit PUSCH or PUCCH outside of the active portion of the bandwidth. In the case of an active cell, UE 102 cannot transmit SRS beyond the active portion of the bandwidth. Unless otherwise indicated, the description in the present invention applies to each of the portions of the bandwidth.

[0074] This document also describes the configuration of the BWP. A UE 102 configured to operate in portions of bandwidth (BWP) of a serving cell can be configured with higher layers for a serving cell with a set of up to four portions of bandwidth (BWP) for UE receptions (DL-BWP set) in bandwidth DL over the BWP-Downlink parameter and a set of up to four BWPs for UE transmissions (UL-BWP set) in the UL bandwidth over the BWP-Uplink parameter.

[0075] If no higher initialDownlinkBWP is provided to UE 102, the initial active BWP DL may be determined by the location and number of contiguous PRBs, starting with the PRB with the lowest index and ending with the PRB with the highest index among the control resource set PRBs for the common search space Type0-PDCCH, as well as the subcarrier spacing and cyclic prefix for PDCCH reception in the control resource set for the common Type0-PDCCH search space. Otherwise, the initial active DL BWP may be provided by the higher-level initialDownlinkBWP parameter. For operation in a primary cell or a secondary cell, the UE 102 may be provided with an initial active UL BWP via a higher layer initialuplinkBWP parameter. If the UE 102 is configured with an additional UL carrier, the UE 102 may be provided with an initial UL BWP on the additional UL carrier via a higher layer initialUplinkBWP parameter in the additional uplink.

[0076] If the UE 102 has a dedicated BWP configuration, the UE 102 can be provided through the higher layer firstActiveDownlinkBWP-Id parameter the first active DL BWP for receptions and through the higher layer firstActiveUplinkBWP-Id parameter the first active UL BWP for transmissions over the primary cell.

275, при этом первый PRB представляет собой смещение PRB относительно PRB, указанного параметрами offsetToCarrier и subcarrierSpacing более высокого уровня. Индекс в наборе частей BWP DL или частей BWP UL может быть предоставлен соответствующим параметром bwp-Id более высокого уровня. Набор параметров общих BWP и набор параметров выделенных BWP могут быть предоставлены параметрами bwp-Common и bwp-Dedicated более высокого уровня.[0077] For each BWP DL or BWP UL in the set of BWP DL parts or BWP UL parts, respectively, the following parameters for the serving cell can be provided to the UE 102. The subcarrier spacing may be provided through the higher layer subcarrierSpacing parameter. The cyclic prefix can be provided by the higher level cyclicPrefix parameter. The first PRB and a number of adjacent PRBs can be provided by the higher level locationAndBandwidth parameter, which is interpreted as a RIV by setting =

275, with the first PRB being the offset of the PRB relative to the PRB indicated by the higher-level offsetToCarrier and subcarrierSpacing parameters. An index into a set of BWP DL Parts or BWP UL Parts may be provided by the corresponding higher-level bwp-Id parameter. A set of common BWP options and a set of dedicated BWP options can be provided by the higher-level bwp-Common and bwp-Dedicated options.

To operate on an unpaired spectrum, a BWP DL in the set of configured BWP DLs with an index provided by the higher-level bwp-Id parameter may be associated with a BWP UL in the set of configured BWP ULs with an index provided by the higher-level bwp-Id parameter when the BWP index DL and BWP UL index are the same. For unpaired spectrum operation, the UE 102 is not expected to accept a configuration in which the center frequency for the BWP DL is different from the center frequency for the BWP UL when the bwp-Id of the BWP DL part matches the bwp-Id of the BWP UL part.

[0078] For each BWP DL part in the set of BWP DL parts in the primary cell, the UE 102 may be configured with control resource sets for each common search space type and for the UE-specific search space. The UE 102 does not wait to be configured without a common search space in the PCell or PSCell of the MCG in the active BWP DL.

[0079] For each UL BWP in the PCell or PUCCH-SCell UL BWP Part Set, configured resource sets for PUCCH transmissions may be provided to UE 102. The UE 102 may receive the PDCCH and PDSCH in the BWP DL according to the configured subcarrier spacing and CP length for the BWP DL. The UE 102 may transmit PUCCH and PUSCH in the UL BWP according to the configured subcarrier spacing and CP length for the UL BWP.

[0080] If the Part Bandwidth Indicator field is configured in DCI format 1_1, the value of the Bandwidth Part Indicator field indicates the active BWP DL from the configured set of BWP DL parts. If the partial bandwidth indicator field is configured in DCI format 0_1, the value of the partial bandwidth indicator field indicates the active UL BWP from the configured set of BWP UL parts.

[0081] If the partial bandwidth indicator field is configured in DCI format 0_1 or DCI format 1_1 and indicates a UL BWP or BWP DL other than the active UL BWP or BWP DL, respectively, the UE 102 may, for each information field in the received DCI format 0_1 or format 1_1 DCI do the following. If the size of the information field is less than the size required to interpret DCI format 0_1 or DCI format 1_1 for BWP UL or BWP DL, which is indicated by the partial bandwidth indicator, respectively, the UE 102 may add zeros to the information field until its size reaches the value needed to interpret the information field for a BWP UL or BWP DL before interpreting the DCI format 0_1 or DCI format 1_1 information fields, respectively. If the size of the information field is larger than the size required to interpret DCI Format 0_1 or DCI Format 1_1 for BWP UL or BWP DL as indicated by the partial bandwidth indicator, respectively, the UE 102 may use some of the least significant bits of DCI Format 0_1 or DCI Format 1_1, equal to the number needed for the BWP UL or BWP DL indicated by the partial bandwidth indicator before interpreting the DCI Format 0_1 or DCI Format 1_1 information fields, respectively. The UE 102 may also set the active UL BWP or DL BWP to the UL BWP or DL BWP indicated by the partial bandwidth indicator in DCI format 0_1 or DCI format 1_1, respectively.

[0082] UE 102 is not expected to detect DCI format 1_1 or DCI format 0_1 indicating a change in the active DL BWP or active BWP UL, respectively, with the corresponding time domain resource assignment field providing an interval offset value for PDSCH reception or PUSCH transmission that is less than the value (eg, delay) required by UE 102 to change the active BWP DL or change the BWP UL.

[0083] If the UE 102 detects a 1_1 DCI format indicating a change in the active BWP DL for some cell, the UE 102 is not required to receive or transmit in the cell during the time period from the end of the third symbol of the interval in which the UE 102 receives the PDCCH, which includes into the DCI 1_ 1 format, in the scheduling cell before the start of the interval indicated by the interval offset value of the time domain resource assignment field in the DCI 1_1 format.

[0084] If the UE 102 detects a 0_1 DCI format indicating a change in the active BWP UL for a certain cell, the UE 102 is not required to receive or transmit in the cell during the time period from the end of the third symbol of the interval in which the UE 102 receives the PDCCH, which includes into DCI format 0_1, in the scheduling cell before the beginning of the interval indicated by the interval offset value of the time domain resource assignment field in DCI format 0_1.

[0085] UE 102 may only expect to detect DCI format 0_1 indicating a change in the active BWP UL, or format 1_1 DCI indicating a change in the active BWP DL, only if the corresponding PDCCH is received in the first 3 symbols of the interval.

[0086] For the primary cell, the UE 102 can be provided with the defaultDownlinkBWP-Id parameter of the higher level BWP DL from among the configured BWP DL parts. If UE 102 is not provided with a default BWP DL using the higher-level defaultDownlinkBWP-Id parameter, the default BWP DL is the initial active BWP DL.

[0087] If the UE 102 is configured for a secondary cell with a defaultDownlinkBWP-Id parameter indicating the default BWP DL of the configured BWP DL parts, and the UE 102 is configured with a higher level bwp-InactivityTimer parameter indicating a timer value, the UE procedures in the secondary cells can be the same as in the primary cell using the timer value for the secondary cell and the default BWP DL for the secondary cell.

[0088] If the UE 102 is configured with a higher layer bwp-InactivityTimer parameter with a timer value for the primary cell and the timer is timing, the UE 102 may increment the timer value by one every 1 millisecond interval for frequency band 1 or every 0.5 milliseconds for frequency band 2 if the restart conditions are met during this interval.

[0089] If the UE 102 is configured with a higher layer bwp-InactivityTimer parameter with a timer value for the secondary cell and the timer is timing, the UE 102 may increment the timer value by one every 1 millisecond interval for frequency band 1 or every 0.5 milliseconds for frequency band 2 if the restart conditions are not met within this interval.

[0090] For a cell in which the UE 102 changes the active DL BWP due to the expiration of the BWP inactivity timer, and to negotiate a delay in changing the active BWP DL or changing the active UL BWP as required by the UE 102, the UE 102 does not need to receive or transmit in the cell during the time period from the beginning of the subframe for frequency band 1 or half of the subframe for frequency band 2, i.e. immediately after the expiration of the BWP timer until the start of the interval in which the UE 102 can receive or transmit.

[0091] If the UE 102 is configured with the upstream firstActiveDownlinkBWP-Id from the first active DL BWP and the upstream firstActiveUplinkBWP-Id from the first active UL BWP in the secondary cell or supplementary UL carrier, the UE 102 may use the specified The DL BWP and the UL BWP indicated as the corresponding first active DL BWP in the secondary cell and the first active UL BWP in the secondary cell or additional UL carrier.

[0092] For pairwise spectrum operation, UE 102 may not wait for a PUCCH transmission with HARQ-ACK information about the PUCCH resource indicated by DCI format 1_0 or DCI format 1_1 if UE 102 changes its active UL BWP in PCell between the 1_0 format detection time DCI or DCI format 1_1 and the time of the corresponding PUCCH transmission with HARQ-ACK information. UE 102 may not rely on PDCCH tracking when UE 102 performs RRM measurements in a bandwidth that is not within the active BWP DL for UE 102.

[0093] Transmissions across multiple cells can be aggregated. Unless otherwise noted, the description in this specification applies to each of the serving cells.

[0094] Some examples of V2X services are described herein. The PSSCH can be used to carry a Direct Connect Shared Channel (SL-SCH). The SL-SCH may be V2X data. You can define a resource pool as a resource for V2X communication. Base station (gNB) 160 may transmit configuration information of one or more resource pools via System Information Block(s) (SIB) or Dedicated Radio Resource Control (RRC) message(s). UE 102 may select one resource pool and any resource in the resource pool to be used for the PSCCH and/or PSSCH. The V2X service may operate in the uplink band(s).

[0095] A resource pool may be defined by a set of slots, subframes, or OFDM symbols, or groups of OFDM symbols. The UE 102 transmitter (eg, UE1) may select resources in the resource pool, and the UE 102 transmitter may transmit the PSCCH and the PSSCH associated with the PSCCH. At the same time, on the resource selected by the transmitter UE 102, gNB 160 can transmit information about the resource pool and the resource(s) in the resource pool. This information may be indicated by DCI, SIB, or a dedicated RRC message. In an alternative embodiment, the resource pool configuration may be pre-configured by each UE (eg, UE1 or UE2). One or more resource pools for V2X transmission and one or more resource pools for V2X reception may be specified individually by a SIB, a dedicated RRC message, a MAC CE, or a DCI.

[0096] The following describes the configuration of the resource pool. For each resource pool, the following information may be associated with all or part of the following information (for example, the resource pool information may include the following information elements associated with V2X parameters): BWP identifier (BWP ID), signal (CP-OFDM or DFT -S-OFDM), DMRS type (for example, DMRS type 1 and DMRS type 2 can be specified in the Uu interface, and which type is used for PSCCH or PSSCH), optional DMRS configuration, whether PT-RS is transmitted or not. In addition, the PTRS density configuration (e.g., MCS threshold for time domain density determination (e.g., all OFDM symbols, every other OFDM symbol, etc.) and scheduled PRB number threshold for frequency domain density determination (e.g., one subcarrier per RB, two subcarriers per RB, etc.)) may be associated with V2X parameters.

[0097] In addition, the BWP configuration can be used as parameters for V2X services. For example, parameters such as numerical values (subcarrier spacing), CP length, slot format (slot or mini-slot) can be configured as parameters for a configured BWP, and these parameters can be used for a resource pool for direct connection communication. In other words, the settings for the BWP corresponding to the BWP ID associated with the resource pool can be used to communicate over a direct connection. The BWP part(s) for a direct connection may (may) be referred to as the BWP SL part(s) (Direct Connect BWP). The direct connection BWP part(s) may be configured as BWP UL part(s) or BWP DL part(s) for PDCCH tracking for the purpose of direct connection resource scheduling. BWP SL may be associated with BWP UL and/or BWP DL.

[0098] In this case, each BWP for V2X can be configured as one BWP UL. If the BWP UL for the V2X resource pool is not configured, one or more resource pools may be configured in the initial BWP UL or another predefined BWP. In a further or alternative embodiment, the direct connection resource pool configuration may not be associated with a BWP ID. In this case, another rule can be used, such as the initial PRB and the PRB length range for the resource pool. In other words, the BWP SL may or may not be configured to be sent over a direct connection. If BWP SL is configured for the Uu interface, BWP UL can be used for communication between gNB 160 and UE 102, with a predefined/configured resource being used for the direct connection resource pool and BWP SL being used for transmission over the direct connection. If BWP SL is not configured, the direct connection resource pool is determined by the offset of the subcarrier or PRB relative to point A, or the overall resource block index, or based on the position of the first subcarrier of the SS/PBCH block (subcarrier with the lowest frequency of the SS/PBCH block). The resource pool configuration may include a scheduling method (eg, dynamic PSSCH scheduling using PSCCH scheduling (eg, resource by SCI or DCI) or semi-persistent PSSCH scheduling using PDCCH or PSCCH activation/deactivation). Semi-persistent scheduling can be enabled or disabled via the MAC-CE.

[0099] The gNB scheduled resource allocation scheme may be referred to as transmission mode 1, and the UE autonomous resource selection scheme may be referred to as transmission mode 2.

[0100] The DMRS signal and type can be configured for both the PSCCH and the PSSCH. The DMRS signal can be configured separately for PSCCH and PSSCH. In a further or alternative embodiment, the PSCCH signal can always be CP-OFDM and the configured/specified signal can only be used for the PSSCH.

[0101] In a further or alternative embodiment, the DCI may indicate to the UE 102 transmitter (e.g., UE1) all or part of the following information if gNB 160 can control the UE 102 transmitter (e.g., if it is in a coverage area): BWP identifier (ID BWP), signal (e.g. CP-OFDM or DFT-S-OFDM), DMRS type (e.g. DMRS type 1 and DMRS type 2 are defined in the Uu interface, and which type is used for PSCCH or PSSCH) and/or number of symbols OFDM for DMRS.

[0102] In the case of SCI, in the PSCCH, the UE 102 (eg, UE2) may be indicated with all or part of the following information: MCS, scheduled resource in the resource pool (eg, this may be a temporary resource template); DMRS type (for example, type 1 and type 2); number of OFDM symbols for DMRS type 1 or type 2 and/or signal.

[0103] The time domain pattern can be defined as a bitmap (b ₀ , b ₁ , ..., b _L ). If b ₁ =1, then the PSSCH transmission can use a unit slot to schedule a direct connection in the resource pool. On the other hand, if b ₁ =0, then the unit slot for scheduling a direct connection within the resource pool may not be used for PSSCH transmission. In a further or alternative embodiment, a frequency domain pattern may be defined. In this case, each bit in the frequency domain pattern bitmap may be applied to each PRB or each group of PRBs, including a plurality of continuous/discontinuous PRBs.

[0104] UE operations module 124 may provide information 148 to one or more receivers 120. For example, UE operations module 124 may inform receiver(s) 120 of when a transmission was received.

[0105] UE operations unit 124 may provide information 138 to demodulator 114. For example, UE operations unit 124 may inform demodulator 114 of a modulation scheme intended for transmissions from gNB 160.

[0106] UE operations module 124 may provide information 136 to decoder 108. For example, UE operations module 124 may inform decoder 108 of the intended encoding of transmissions from gNB 160.

[0107] UE operations module 124 may provide information 142 to encoder 150. Information 142 may include data to be encoded and/or encoding instructions. For example, UE operations module 124 may instruct encoder 150 to encode transmission data 146 and/or other information 142. Other information 142 may include PDSCH HARQ-ACK information.

[0108] Encoder 150 may encode transmission data 146 and/or other information 142 provided by UE operations 124 . For example, encoding data 146 and/or other information 142 may include encoding with error detection and/or correction, mapping data to spatial, temporal, and/or frequency resources for transmission, multiplexing, and the like. Encoder 150 may provide encoded data 152 to modulator 154 .

[0109] UE operations unit 124 may provide information 144 to modulator 154. For example, UE operations unit 124 may inform modulator 154 of the modulation type (eg, constellation matching) to be used for transmissions to gNB 160. Modulator 154 may modulate encoded data 152 for applying one or more modulated signals 156 to one or more transmitters 158.

[0110] UE operations module 124 may provide information 140 to one or more transmitters 158. This information 140 may include commands for one or more transmitters 158. For example, UE operations module 124 may instruct one or more transmitters 158 when to transmit the signal. on gNB 160. For example, one or more transmitters 158 may transmit during one UL subframe. One or more transmitters 158 may upconvert and transmit modulated signal(s) 156 to one or more gNBs 160.

[0111] Each of the one or more gNBs 160 may include one or more transceivers 176, one or more demodulators 172, one or more decoders 166, one or more encoders 109, one or more modulators 113, a data buffer 162, and a module 182 gNB operations. For example, one or more receive and/or transmit paths may be implemented on gNB 160. For convenience, only one transceiver 176, decoder 166, demodulator 172, encoder 109, and modulator 113 are shown in gNB 160, although many parallel elements (e.g., transceivers 176, decoders 166, demodulators 172, encoders 109, and modulators 113) may be implemented.

[0112] Transceiver 176 may include one or more receivers 178 and one or more transmitters 117. One or more receivers 178 may receive signals from UE 102 using one or more antennas 180a-n. For example, receiver 178 may receive and downconvert signals to generate one or more received signals 174. One or more received signals 174 may be provided to demodulator 172. One or more transmitters 117 may signal to UE 102 using one or more antennas 180a-n. For example, one or more transmitters 117 may upconvert and transmit one or more modulated signals 115.

[0113] Demodulator 172 may demodulate one or more received signals 174 to create one or more demodulated signals 170. One or more demodulated signals 170 may be provided to decoder 166. To decode gNB signals 160, decoder 166 may use decoder 166. Decoder 166 may provide one or more decoded signals 164, 168. For example, the first decoded eNB signal 164 may contain received payload data that may be stored in data buffer 162. The second decoded eNB signal 168 may contain overhead and/or control data. For example, second decoded eNB signal 168 may provide data (eg, HARQ-ACK PDSCH information) that gNB operations module 182 may use to perform one or more operations.

[0114] Typically, gNB operations module 182 may provide gNB 160 with the ability to communicate with one or more UE 102. gNB operations module 182 may include gNB scheduling module 194. The gNB scheduling module 194 can perform operations on signaling patterns in V2X communications as described herein.

[0115] gNB operations module 182 may provide information 188 to demodulator 172. For example, gNB operations module 182 may inform demodulator 172 of a modulation scheme intended for transmissions from one or more devices of UE 102.

[0116] gNB station operations module 182 may provide information 186 to decoder 166. For example, gNB station operations module 182 may inform decoder 166 of the expected encoding of transmissions from one or more UEs 102.

[0117] gNB station operations module 182 may provide information 101 to encoder 109. Information 101 may include data to be encoded and/or encoding instructions. For example, gNB station operations module 182 may instruct encoder 109 to encode information 101 including transmission data 105 .

[0118] Encoder 109 may encode transmission data 105 and/or other information included in information 101 provided by gNB operations module 182. For example, encoding data 105 and/or other information in information 101 may include error detection and/or correction coding, mapping data to spatial, temporal, and/or frequency resources for transmission, multiplexing, and the like. Encoder 109 may provide coded data 111 modulator 113. The transmission data 105 may include network data to be relayed to the UE 102.

[0119] gNB operations module 182 may provide information 103 to modulator 113. This information 103 may include instructions for modulator 113. For example, gNB station operations module 182 may inform modulator 113 of the modulation type (eg, constellation mapping) to be used for transmissions from one or more UEs 102. Modulator 113 may modulate encoded data 111 to provide one or more modulated signals 115 to one or more transmitters 117.

[0120] gNB station operations module 182 may provide information 192 to one or more transmitters 117. This information 192 may include commands for one or more transmitters 117. For example, gNB station operations module 182 may instruct one or more transmitters 117 to when to transmit (or when not to transmit) a signal to one or more devices of UE 102. One or more transmitters 117 may upconvert and transmit the modulated signal(s) 115 to one or more devices of UE 102.

[0121] It should be noted that a DL subframe may be transmitted from gNB 160 to one or more UE 102 devices and that a UL subframe may be transmitted from one or more UE 102 devices to gNB 160. Moreover, both gNB 160 and and one or more devices of the UE 102 may transmit data in a standard dedicated subframe.

[0122] It should also be noted that one or more elements or parts thereof included in one or more eNB 160 and one or more devices of the UE 102 equipment may be implemented as equipment. For example, one or more of these elements or parts thereof may be implemented as a chip, circuit, or hardware components, etc. It should also be noted that one or more of the functions or methods described herein may be implemented in equipment and /or performed through its use. For example, one or more of the methods described herein may be implemented and/or implemented with a chipset, an application specific integrated circuit (ASIC), a large scale integrated circuit (LSI), or an integrated circuit, or the like.

[0123] URLLC can be shared with other services (eg, eMBB). According to some approaches, due to delay requirements, URLLC may have the highest priority. This document provides some examples of sharing URLLC with other services (eg, in one or more of the following figure descriptions).

[0124] In FIG. 2 is an example illustrating V2X services. The first UE 202a (referred to as transmitter UE or UE1) transmits V2X data to the second UE 202b (referred to as receiver UE or UE2). Base station (gNB) 260 transmits UE data or control signal(s) to first UE 202a and/or second UE 202b. L1 is the radio link between gNB 260 and the first UE 202a (L1 may be referred to as the Uu interface), and L2 is the radio link between the first UE 202a and the second UE 202b (L2 may be referred to as the PC5 interface).

[0125] In FIG. 3 shows the time relationship between uplink and downlink. Uplink frame number i for transmission from UE 102 may begin with N _TA = (N _TA +N _{TA, offset} ) • T _c before the start of the corresponding downlink frame i at UE 102. The values of N _{TA, offset} are given in Table 7 .

On FIG. 4 is a block diagram illustrating one implementation of UE 402. UE 402 may be implemented in accordance with a UE 102 transmitter or a UE 102 receiver, as described in connection with FIG. 1.

[0126] The higher layer circuit 423 may receive a higher layer message (eg, RRC allocated SIB) from gNB 160 or use a preconfigured configuration by UE 402. The transmission circuit 451 may generate a PSCCH and a PSSCH for transmission, a HARQ-ACK bit, and /or retransmission signal(s). Receive circuitry 443 may receive the PSCCH, PSSCH, HARQ-ACK bit, and/or retransmission signal(s). A digital-to-analog converter (DAC) 401 may convert the digital signal to an analog signal, amplify the analog signal, and the transmit antenna 431a may transmit the PSCCH and/or PSSCH. Receiving antenna 431b can receive the transmitted signals. An analog-to-digital converter (ADC) 403 can apply AGC (automatic gain control), amplify received signals, and convert an analog signal to a digital signal. Transmit antenna 431b may transmit the PSCCH and/or PSSCH.

[0127] In FIG. 5 is a diagram illustrating one example of a resource grid for a downlink. The resource grid shown in Fig. 5 may be used in some implementations of the systems and methods described herein. More details regarding the resource grid are given in connection with FIG. 1.

[0128] In FIG. 5, one downlink subframe 769 may include two downlink slots 783. N ^DL _RB is the downlink bandwidth configuration of the serving cell, expressed in multiples of N ^RB _sc , where N ^RB _sc is the size of the resource block 789 in the frequency domain, expressed in the number of subcarriers, and N ^DL _symb is some number of symbols 787 OFDM in the interval 783 downlink. Resource block 789 may include a number of resource elements (REs) 791.

[0129] For PCell N ^DL _RB is a broadcast as part of the system information. For SCell (including licensed band access (LAA) SCell) N ^DL _RBs are configured with an RRC message specific to UE 102. For PDSCH matching, the available RE 791 may be a RE 791 whose index 1 satisfies the conditions: 1 ≥ 1 _{data, start} and/or 1 _{data, start} ≥ 1 in a subframe.

[0130] In the downlink, a cyclic prefix (CP) OFDM access scheme, which may also be referred to as CP-OFDM, may be used. On the downlink, PDCCH, Enhanced PDCCH (EPDCCH), PDSCH, and the like may be transmitted. A downlink radio frame may include a plurality of downlink resource block (RB) pairs, which are also referred to as physical resource blocks (PRBs). The downlink RB pair is a block for assigning downlink radio resources determined by a predetermined bandwidth (RB bandwidth) and a time interval. The downlink RB pair includes two downlink RBs that are continuous in the time domain.

[0131] The downlink RB includes twelve subcarriers in the frequency domain. A downlink interval includes fourteen (in case of normal CP) or twelve (in case of extended CP) OFDM symbols in the time domain. The area defined by one subcarrier in the frequency domain and one OFDM symbol in the time domain is called a resource element (RE) and is uniquely identified by a pair of indices (k, l) in the interval, where k and l are the indices in the frequency and time domains, respectively. Since the present document discusses downlink subframes in a single component carrier (CC), note that downlink subframes are defined for each CC and these downlink subframes are essentially synchronized with each other among the CCs.

[0132] In FIG. 6 is a diagram illustrating one example of an uplink resource grid. The resource grid shown in Fig. 6 may be used in some implementations of the systems and methods described herein. More details regarding the resource grid are given in connection with FIG. 1.

[0133] In FIG. 6, one uplink subframe 869 may include two uplink slots 883. N ^UL _RB is the uplink bandwidth configuration of the serving cell, expressed in multiples of N ^RB sc, where N ^RB _sc is the 889 resource block size in the frequency domain, expressed in subcarriers, and N ^UL _symb is the number of 893 SC symbols -FDMA in uplink slot 883. Resource block 889 may include a number of resource elements (REs) 891.

[0134] For PCell N ^UL _RB is a broadcast as part of the system information. For SCells (including LAA SCells), N ^UL _RBs are configured with an RRC message dedicated to UE 102.

[0135] In the uplink, in addition to CP-OFDM, a Single Carrier Frequency Division Multiple Access (SC-FDMA) scheme, also referred to as Discrete Fourier Transform Extended OFDM (DFT-S-OFDM), can be used. In the uplink, PUCCH, PUSCH, PRACH, and the like may be transmitted. An uplink radio frame may include a plurality of uplink resource block pairs. The uplink RB pair is a block for assigning uplink radio resources determined by a predetermined bandwidth (RB bandwidth) and a time slot. The uplink RB pair includes two uplink RBs that are continuous in the time domain.

[0136] The uplink RB may include twelve subcarriers in the frequency domain. An uplink interval includes fourteen (in case of normal CP) or twelve (in case of extended CP) OFDM/DFT-S-OFDM symbols in the time domain. The area defined by one subcarrier in the frequency domain and one OFDM/DFT-S-OFDM symbol in the time domain is called the RE and is uniquely identified in the interval by a pair of indices (k, l), where k and l are the indices in the frequency and time domains, respectively. . Although the present document discusses uplink subframes in a single component carrier (CC), uplink subframes are defined for each CC.

[0137] In FIG. 7 shows examples of several numbers 901. Number #1 901a may be a base number (eg, a reference number). For example, RE 995a of base number 901a may be defined with a subcarrier spacing 905a of 15 kHz in the frequency domain and a length of 2048Ts+CP (eg, 160Ts or 144Ts) in the time domain (i.e., symbol length #1 903a), where Ts denotes unit of baseband sampling time, defined as 1/(15000 • 2048) seconds. For the ith numerical value, the subcarrier spacing 905 may be 15 x 2 ⁱ and the effective OFDM symbol length is 2048 x 2 ⁱ x Ts. This may provide a character length of 2048 • 2 ^-i • Ts + CP length (eg, 160 • 2 ^-i • Ts or 144 • 2 ^-i • Ts). In other words, the subcarrier spacing of the i+1 th numerical value is twice that of the i th numerical value, and the symbol length of the i+1 th numerical value is half of the symbol length of the i th numerical value. On FIG. 7 shows four numerical values, but the system may support a different number of numerical values. In addition, the system does not have to support all numerical values from 0th to Ith, i=0, 1, ..., I.

[0138] For example, the first UL transmission in the first SPS resource as mentioned above can only be performed for the numerical value #1 (eg, at a subcarrier spacing of 15 kHz). In this case, the UE 102 may obtain (detect) the numerical value #1 based on the synchronization signal. In addition, UE 102 may receive a dedicated RRC signal including information (eg, a handover command) configuring numerical value #1. The dedicated RRC signal may be a UE-specific signal. In this case, the first UL transmission in the first SPS resource may be performed with numeric value #1, numeric value #2 (at 30 kHz subcarrier spacing), and/or at numeric value #3 (at 60 kHz subcarrier spacing).

[0139] In addition, the second UL transmission in the second SPS resource as mentioned above can only be performed with the numerical value #3. Here, for example, UE 102 may receive system information (eg, a service information block (MIB) and/or a system information block (SIB)) including information configuring numeric value #2 and/or numeric value #3.

[0140] In addition, UE 102 may receive a dedicated RRC signal including information (eg, a handover command) configuring numeric #2 and/or numeric #3. System information (eg, MIB) may be transmitted over a BCH (broadcast channel) and/or using a dedicated RRC signal. The system information (eg, SIB) may contain information related to evaluating whether the UE 102 has allowed cell access and/or determines the scheduling of other system information. The System Information (SIB) may comprise radio resource configuration information that is common to multiple UE 102 equipment devices. In other words, the dedicated RRC signal may include each of a plurality of numerical value numerical value) for each of the UL transmissions (eg, each of the UL-SCH transmissions, each of the PUSCH transmissions). In addition, the dedicated RRC signal may include each of a plurality of numerical value patterns (first numerical value, second numerical value, and/or third numerical value) for each of the DL transmissions (each of the PDCCH transmissions).

[0141] In FIG. 8 shows examples of subframe structures for the numerical values 1001 shown in FIG. 7. Given that the interval 1083 includes N ^DL _symb (or N ^UL _symb ) = 7 symbols, the length of the interval i+1-th numerical value 1001 is half the i-th numerical value 1001 and ultimately the number of intervals 1083 in subframe (i.e. 1 ms) is doubled. It may be noted that the radio frame may include 10 subframes, and the length of the radio frame may be 10 ms.

[0142] In FIG. 9 shows examples of slots 1183 and sub-slots 1107. If sub-slot 1107 is not configured by a higher layer, UE 102 and eNB/gNB 160 may use only slot 1183 as a scheduling block. More specifically, a given transport block may be allocated to slot 1183. If sub-slot 1107 configured by a higher layer, UE 102 and eNB/gNB 160 may use sub-slot 1107 as well as slot 1183. Sub-slot 1107 may include one or more OFDM symbols. The maximum number of OFDM symbols that make up sub-slot 1107 may be N ^DL _symb -1 (or N ^UL _symb -1).

[0143] The length of the sub-interval can be configured by higher layer signaling. In an alternative embodiment, the sub-slot length may be indicated by a physical layer control channel (eg, DCI format).

[0144] Subslot 1107 in slot 1183 may start with any character, as long as it does not conflict with the control channel. There may be restrictions on the length of the mini-span depending on the restrictions on the start position. For example, a sub-interval 1107 with a length of N ^DL _symb -1 (or N ^UL _symb -1) may start in interval 1183 from the second symbol. The starting position of the sub-slot 1107 may be indicated by a physical layer control channel (eg, DCI format). In an alternative embodiment, the starting position of the sub-slot 1107 may be determined from information (e.g., search space index, blind decode candidate index, frequency and/or time resource indices, physical RB (PRB) index, control channel element index, channel element aggregation level control channel, antenna port index, etc.) of the physical layer control channel that schedules data in the corresponding sub-slot 1107. In this case, the slot may be called "PDSCH type A", "PUSCH type A", or "PSSCH type A". The mini-slot may be referred to as "PDSCH type B", "PUSCH type B", or "PSSCH type B". This can be defined as the position of the DMRS in the time domain. For example, the Type A PSSCH DMRS may be mapped to the 3rd or 4th OFDM symbol in the interval, and the Type B PSSCH DMRS may be mapped to the first OFDM symbol of the scheduled OFDM symbol(s).

[0145] In cases where sub-slot 1107 is configured, a given transport block may be allocated to interval 1183, sub-slot 1107, aggregated sub-slots 1107, or aggregated sub-slot(s) 1107 and interval 1183. This block may also be a block for generating HARQ-ACK bits.

[0146] In FIG. 10 shows examples of scheduling timelines 1209. For normal DL scheduling timeline 1209a, DL control channels are mapped to the start portion of slot 1283a. DL control channels 1211 schedule shared DL channels 1213a in the same slot 1283a. HARQ-ACKs for shared DL channels 1213a (i.e., HARQ-ACKs each indicating whether a transport block was successfully found on each shared DL channel 1213a) are reported on UL control channels 1215a at a later interval 1283b . In this case, a given interval 1283 may contain one of a DL transmission or a UL transmission.

[0147] For normal UL scheduling timeline 1209b, DL control channels 1211b are mapped to the start portion of slot 1283c. DL control channels 1211b schedule shared UL channels 1217a in later slot 1283d. In these cases, the timing (time offset) between DL slot 1283c and UL slot 1283d may be fixed or configured via higher layer signaling. In an alternative embodiment, this may be indicated by a physical layer control channel (eg, a DL assignment DCI format, a UL grant DCI format, or another DCI format such as a common UE signaling DCI format that can be monitored in a common search space).

[0148] For the offline base DL scheduling timeline 1209c, DL control channels 1211c are mapped to the start portion of slot 1283e. DL control channels 1211c schedule shared DL channels 1213b in the same slot 1283e. HARQ-ACKs for shared DL channels 1213b are reported on UL control channels 1215b that are mapped to the end of slot 1283e.

[0149] For the offline base DL scheduling timeline 1209d, DL control channels 1211d are mapped to the start portion of slot 1283f. DL control channels 1211d schedule shared DL channels 1217b in the same slot 1283f. In these cases, interval 1283f may contain DL and UL portions, and a guard interval may be provided between DL and UL transmissions.

[0150] The use of the offline slot can be performed by configuring the offline slot. In an alternative embodiment, the use of an autonomous slot can be done in a sub-slot configuration. In yet another alternative embodiment, the use of the autonomous slot can be done with a shortened physical channel configuration (eg, PDSCH, PUSCH, PUCCH, etc.).

[0151] In FIG. 11 shows examples of DL control channel monitoring areas. One or more sets of PRBs may be configured to monitor the DL control channel. In other words, the frequency domain control resource set is a set of PRBs in which the UE 102 attempts to blindly decode the downlink control information, where the PRBs may or may not be frequency contiguous, the UE 102 may have one or more control resource sets and one the DCI message may reside in one control resource set. In the frequency domain, the PRB is the resource unit size (which may or may not include demodulation reference signals (DM-RS)) for the control channel. The shared DL channel may start with a later OFDM symbol than the one that transmits(s) the detected DL control channel. In an alternative embodiment, the shared DL channel may start with (or earlier) an OFDM symbol that is the last OFDM symbol carrying the detected DL control channel. In other words, dynamic reuse of at least a portion of resources in control resource sets for data of the same or different UE 102, at least in the frequency domain, can be supported.

[0152] In FIG. 12 shows examples of a DL control channel containing more than one control channel element. If the control resource set spans a plurality of OFDM symbols, a control channel candidate may be mapped to a plurality of OFDM symbols, or may be mapped to a single OFDM symbol. One DL control channel element may be mapped to REs defined by one PRB and one OFDM symbol. If more than one DL control channel element is used to transmit one DL control channel, DL control channel element aggregation can be performed.

[0153] The number of aggregated DL control channel elements is called the DL control channel element aggregation level. The DL control channel element aggregation level may be 1 or 2 to the power of an integer. gNB 160 may inform UE 102 which control channel candidates are mapped to each subset of OFDM symbols in the control resource set. If one DL control channel is mapped to one OFDM symbol and does not cover a plurality of OFDM symbols, DL control channel elements are aggregated within an OFDM symbol, namely, a plurality of DL control channel elements are aggregated in one OFDM symbol. Otherwise, the DL control channel elements may be aggregated in different OFDM symbols.

[0154] In FIG. 13 shows examples of UL control channel structures. The UL control channel may be mapped to REs defined as PRB and interval in the frequency and time domains, respectively. This UL control channel may be referred to as long format (or simply 1st format). UL control channels may be mapped to REs in limited OFDM symbols in the time domain. This may be referred to as the short format (or simply 2nd format). Short format UL control channels may be mapped to REs in a single PRB. In an alternative embodiment, short format UL control channels may be mapped to REs in multiple PRBs. For example, interleaved mapping may be applied, namely, the UL control channel may be mapped to each set of N PRBs (eg, 5 or 10) within the system bandwidth.

[0155] In FIG. 14 is a block diagram illustrating one implementation of gNB 1660. gNB 1660 may include an upper layer processor 1623, a DL transmitter 1625, a UL receiver 1633, and one or more antennas 1631. A DL transmitter 1625 may include a PDCCH transmitter 1627 and transmitter 1629 PDSCH. The UL receiver 1633 may include a PUCCH receiver 1635 and a PUSCH receiver 1637.

[0156] The higher layer processor 1623 may control the physical layer behavior (DL transmitter and UL receiver behavior) and provide higher layer parameters to the physical layer. The higher layer processor 1623 may receive transport blocks from the physical layer. The higher layer processor 1623 may send/receive higher layer messages such as an RRC message and a MAC message to or from a higher layer UE. Upper layer processor 1623 may provide PDSCH transmitter transport blocks and provide PDCCH transmitter transmission parameters related to transport blocks.

[0157] The DL transmitter 1625 may multiplex the downlink physical channels and the downlink physical signals (including the reservation signal) and transmit them via the transmit antennas 1631. The UL receiver 1633 may receive the multiplexed uplink physical channels and the uplink physical signals via receive antennas 1631 and demultiplex them. The PUCCH receiver 1635 may provide upper layer processor 1623 with UCI information. The PUSCH receiver 1637 may provide higher layer processor 1623 with the received transport blocks.

[0158] In FIG. 15 is a block diagram illustrating one implementation of UE 1702. UE 1702 may include an upper layer processor 1723, a UL transmitter 1751, a DL receiver 1743, and one or more antennas 1731. UL transmitter 1751 may include a PUCCH transmitter 1753 and transmitter 1755 PUSCH. The DL receiver 1743 may include a PDCCH receiver 1745 and a PDSCH receiver 1747.

[0159] The higher layer processor 1723 may control the behavior of the physical layer (the behavior of the UL transmitter and the DL receiver) and provide higher layer parameters to the physical layer. The higher layer processor 1723 may receive transport blocks from the physical layer. The higher layer processor 1723 may send/receive higher layer messages such as an RRC message and a MAC message to or from a higher layer UE. Higher layer processor 1723 may provide PUSCH transmitter transport blocks and provide PUCCH transmitter 1753 with UCI information.

[0160] The DL receiver 1743 may receive the multiplexed downlink physical channels and downlink physical signals via the receive antennas 1731 and demultiplex them. The PDCCH receiver 1745 may provide higher layer processor 1723 with DCI information. The PDSCH receiver 1747 may provide higher layer processor 1723 with the received transport blocks.

[0161] It should be noted that the names of the physical channels described herein are given as examples. Other names may be used such as NRPDCCH, NRPDSCH, NRPUCCH and NRPUSCH, New Generation Channel (G)PDCCH, GPDSCH, GPUCCH and GPUSCH, or the like.

[0162] In FIG. 16 illustrates various components that can be used in UE 1802. UE 1802 described in connection with FIG. 16 may be implemented in accordance with UE 102 described in connection with FIG. 1. UE 1802 includes a processor 1803 that controls the operation of UE 1802. Processor 1803 may also be referred to as a central processing unit (CPU). Memory 1805, which may include Read Only Memory (ROM), Random Access Memory (RAM), a combination of the two, or any type of device that can store information, provides processor 1803 with instructions 1807a and data 1809a. The memory portion 1805 may also include a non-volatile random access memory (ENORAM). Instructions 1807b or data 1809b may also be permanently stored in processor 1803. Instructions 1807b and/or data 1809b loaded into processor 1803 may also include instructions 1807a and/or data 1809a from memory 1805 that have been loaded for execution or processing. processor 1803. Processor 1803 may execute instructions 1807b to implement the methods described above.

[0163] UE 1802 may also include a housing that contains one or more transmitters 1858 and one or more receivers 1820 to enable data transmission and reception. Transmitter(s) 1858 and receiver(s) 1820 may be combined into one or more transceivers 1818. Attached to the housing are one or more antennas 1822a-n that are electrically coupled to transceiver 1818.

[0164] The various components of UE 1802 are connected to each other by a bus system 1811, which, in addition to a data bus, may include a power bus, a control signal bus, and a status signal bus. However, for the avoidance of doubt, various tires are illustrated in FIG. 16 as a bus system 1811. UE 1802 may also include a digital signal processor (DSP) 1813 for use in signal processing. UE 1802 may also include a communication interface 1815 that provides user access to functions of UE 1802. UE 1802 illustrated in FIG. 16 is a functional block diagram, not a list of specific components.

[0165] In FIG. 17 illustrates various components that can be used in gNB 1960. gNB 1960 described in connection with FIG. 17 may be implemented in accordance with gNB 160 described in connection with FIG. 1. gNB 1960 includes a processor 1903 that controls the operation of gNB 1960. Processor 1903 may also be referred to as a central processing unit (CPU). Memory 1905, which may include Read Only Memory (ROM), Random Access Memory (RAM), a combination of the two, or any type of device that can store information, provides processor 1903 with instructions 1907a and data 1909a. The memory portion 1905 may also include a non-volatile random access memory (NRAM). Instructions 1907b or data 1909b may also be permanently stored in processor 1903. Instructions 1907b and/or data 1909b loaded into processor 1903 may also include instructions 1907a and/or data 1909a from memory 1905 that have been loaded for execution or processing. processor 1903. Processor 1903 may execute instructions 1907b to implement the methods described above.

[0166] gNB 1960 may also include a housing that contains one or more transmitters 1917 and one or more receivers 1978 to enable data transmission and reception. The transmitter(s) 1917 and receiver(s) 1978 may be combined into one or more transceivers 1976. Attached to the housing are one or more antennas 1980a-n that are electrically coupled to the transceiver 1976.

[0167] The various components of the gNB 1960 are connected to each other via a bus system 1911, which, in addition to a data bus, may include a power bus, a control signal bus, and a status signal bus. However, for the avoidance of doubt, various tires are illustrated in FIG. 17 as a 1911 bus system. gNB 1960 may also include a digital signal processor (DSP) 1913 for use in signal processing. gNB 1960 may also include a communications interface 1915 that provides user access to the functions of gNB 1960. gNB 1960 illustrated in FIG. 17 is a functional block diagram, not a list of specific components.

[0168] In FIG. 18 is a block diagram illustrating one embodiment of UE 2002 in which signal configurations for V2X communication may be implemented. UE 2002 includes a transmission means 2058, a receiving means 2020, and a control means 2024. The transmit means 2058, the receive means 2020, and the control means 2024 may be configured to perform one or more of the functions described in connection with FIG. 1. In FIG. 16 above illustrates one example of a specific structure of the device shown in FIG. 18. To perform one or more of the functions shown in FIG. 1, various other structures may be implemented. For example, a DSP may be implemented in software.

[0169] In FIG. 19 is a block diagram illustrating one embodiment of gNB 2160 in which signal configurations for V2X communication may be implemented. gNB 2160 includes a transmission means 2123, a receiving means 2178, and a control means 2182. The transmit means 2123, the receive means 2178, and the control means 2182 may be configured to perform one or more of the functions described in connection with FIG. 1. In FIG. 17 above illustrates one example of a specific structure of the device shown in FIG. 19. To perform one or more of the functions shown in FIG. 1, various other structures may be implemented. For example, a DSP may be implemented in software.

[0170] The term "computer-readable media" refers to any available media that can be accessed by a computer or processor. As used herein, the term "computer-readable media" may refer to computer and/or processor-readable media that is non-volatile and tangible. By way of example, and not limitation, computer-readable or processor-readable media can be RAM, read-only memory (ROM), electrically erasable programmable ROM (EEPROM), CD-ROM or other optical disc drive, magnetic disk drive, or other magnetic storage devices or any other medium that can be used to carry or store the required program code in the form of instructions or data structures that can be accessed by a computer or processor. As used herein, the term "disc" includes, compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray® disc, where discs typically reproduce data magnetically, while In this case, discs reproduce data optically using lasers.

It should be noted that one or more of the methods described herein may be implemented and/or performed using equipment. For example, one or more of the methods described herein may be implemented and/or implemented with a chipset, an application specific integrated circuit (ASIC), a large scale integrated circuit (LSI), or an integrated circuit, or the like.

[0171] Each of the methods described herein includes one or more steps or actions for implementing the described method. The steps and/or steps of the method can be interchanged with each other and/or combined into one step without departing from the scope defined by the claims. In other words, if the described method does not require a specific order of steps or actions to work properly, the order and/or use of certain steps and/or actions can be changed without departing from the scope defined by the claims.

[0172] It should be understood that the claims are not limited to the exact configuration and components that are illustrated above. Various modifications, changes, and variations may be made to the arrangement, operation, or details of the systems, methods, and apparatus described herein without departing from the scope of the claims.

[0173] The program executed on gNB 160 or UE 102 in accordance with the described systems and methods is a program (a program that controls the operation of a computer) that controls the CPU, etc. in such a way as to perform a function in accordance with the described systems and ways. At the same time, the information that these devices process is temporarily stored in RAM during processing. The information is then stored on various ROM devices or hard disks and is read by the CPU for modification or writing as needed. The recording medium on which the program is stored can be any of semiconductor devices (for example, ROM, non-volatile memory card, etc.), optical storage devices (for example, DVD, MO, MD, CD, BD, etc. .), magnetic storage devices (e.g., magnetic tape, floppy disk, etc.), and the like. in accordance with the described systems and methods are implemented in cooperation with the operating system or other application programs based on instructions from the program.

[0174] Moreover, if programs are available on the market, a program stored on a portable storage medium can be distributed, or a program can be transferred to a server computer that is connected via a network such as the Internet. In this case, the storage device on the server computer is also included in the system. Moreover, some or all of gNB 160 and UE 102 in accordance with the systems and methods described above may be implemented as an LSI, which is a typical integrated circuit. Each functional block of gNB 160 and UE 102 may be individually embedded on a chip, and some or all of the functional blocks may be combined on a chip. Moreover, the embodiments of integrated circuits are not limited to LSI, and an integrated circuit for a functional block may be implemented as a dedicated circuit or a general purpose processor. In addition, if, as the technology of semiconductor materials develops, an integrated circuit fabrication technology appears to replace the existing LSI fabrication technologies, it is also possible to use an integrated circuit to which such technology has been applied.

[0175] Moreover, each functional block or various elements of the base station device and the terminal device used in each of the above implementations can be implemented or executed in the form of a circuit, which is usually an integrated circuit or a plurality of integrated circuits. Circuit capable of performing the functions described in this data sheet may include a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a general purpose integrated circuit, a field programmable gate array (FPGA), or other programmable logic devices, discrete circuits or transistorized logic circuits, a discrete hardware component, or a combination thereof. A general purpose processor may be a microprocessor, or in an alternative embodiment, the processor may be a conventional processor, controller, microcontroller, or state machine. The general purpose processor or each circuit described above may be digitally configurable or may be analog configurable. Additionally, if as semiconductor material technology advances, an integrated circuit fabrication technology emerges to replace existing integrated circuit fabrication technologies, an integrated circuit fabricated by this technology can also be used.

[0176] As used herein, the term "and/or" should be interpreted to mean "one or more elements". For example, the expression "A, B and/or C" should be interpreted to mean any of the following: A only, B only, C only, A and B (but not C), B and C (but not A), A and C (but not B) or all of A, B and C. In the context of this document, the expression "at least one of" should be interpreted to mean "one or more elements". For example, the expression "at least one of A, B and C" or the expression "at least one of A, B or C" should be interpreted to mean any of the options: only A, only B, only C, A and B ( but not C), B and C (but not A), A and C (but not B) or all of A, B and C. In the context of this document, the expression "one or more of" should be interpreted to mean "one or more elements." For example, the expression "one or more of A, B and C" or the expression "one or more of A, B or C" should be interpreted as any of the options: only A, only B, only C, A and B (but not C ), B and C (but not A), A and C (but not B) or all of A, B and C.

[0177] <Summary>

In one example, a user equipment (UE) comprises higher layer circuitry configured to receive resource pool information for a direct connection; a transmission scheme configured to transmit a physical direct connection control channel (PSCCH) and a physical shared channel for direct connection data transmission (PSSCH), wherein the resource pool information includes information about whether transmission precoding is enabled or disabled, and the transmission scheme is configured to transmit the PSSCH based on whether transmission precoding is enabled or disabled.

[0178] In one example, a base station (gNB) comprises a transmission circuit configured to transmit resource pool information for a direct connection; and a receiving circuit configured to receive a physical direct connection control channel (PSCCH) and a physical shared channel for direct connection data transmission (PSSCH), wherein the resource pool information includes information about whether transmission precoding is enabled or disabled, and the receiving circuit is configured to receive the PSSCH based on whether transmission precoding is enabled or disabled.

[0179] In one example, a communication method performed by a user equipment (UE) includes: receiving resource pool information for a direct connection; transmitting a physical direct connection control channel (PSCCH) and a physical direct connection shared data channel (PSSCH), the resource pool information including information about whether transmission precoding is enabled or disabled; and transmitting the PSSCH based on whether transmission precoding is enabled or disabled.

[0180] In one example, a communication method performed by a base station (gNB) includes: transmitting resource pool information for a direct connection; receiving a Physical Direct Connect Control Channel (PSCCH) and a Physical Shared Direct Connect Data Channel (PSSCH), the resource pool information including information about whether transmission precoding is enabled or disabled; and receiving the PSSCH based on whether transmission precoding is enabled or disabled.

[0181] In one example, a user equipment (UE) comprises: higher layer circuitry configured to receive information for configuring a direct connection bandwidth fraction (BWP) and second information for configuring one or more resource pools for transmission and/or reception over direct connection; a transmission scheme configured to transmit a physical direct connection control channel (PSCCH) and a physical direct connection shared data channel (PSSCH), wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for the PSCCH and PSSCH is configured to each of one or more resource pools.

[0182] In one example, a base station (gNB) comprises: higher layer circuitry configured to transmit information for configuring a direct connection bandwidth portion (BWP) and second information for configuring one or more resource pools for direct connection communication; wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for the PSCCH and PSSCH is configured for each of the one or more resource pools.

[0183] In one example, a communication method performed by a user equipment (UE) includes: receiving information for configuring a direct connection bandwidth portion (BWP) and second information for configuring one or more resource pools for transmission and/or reception over a direct connection; transmission of a physical direct connection control channel (PSCCH) and a physical direct connection shared data channel (PSSCH), wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for PSCCH and PSSCH is configured for each of one or more pools resources.

[0184] In one example, a communication method performed by a base station (gNB) includes transmitting information for configuring a direct connection bandwidth portion (BWP) and second information for configuring one or more resource pools for direct connection communication; wherein the subcarrier spacing is associated with the direct connection BWP, and the demodulation reference signal for the PSCCH and PSSCH is configured for each of the one or more resource pools.

[0185] <Cross-reference>

This non-provisional application claims priority under 35 U.S.C. §119 over U.S. Provisional Application No. 62/737,777, dated September 27, 2018, the contents of which are hereby incorporated by reference in their entirety.

Claims (14)

1. User Equipment (UE), comprising: a higher layer circuit configured to receive first information for configuring a direct connection bandwidth fraction (BWP) and second information for configuring one or more resource pools for transmission and/or reception over a direct connection; a transmission scheme configured to transmit a physical direct connection control channel (PSCCH) and a physical shared channel for direct connection data transmission (PSSCH), wherein the subcarrier spacing is associated with the direct-connect BWP, and demodulation reference signal configuration for PSCCH and PSSCH is performed for each of said one or more resource pools. 2. Base station (gNB) containing: a higher layer circuit configured to transmit first information for configuring a direct connection bandwidth fraction (BWP) and second information for configuring one or more resource pools for direct connection communication; and the subcarrier spacing is associated with the direct-connect BWP, and a demodulation reference signal for a physical direct connection control channel (PSCCH) and a physical shared direct connection data channel (PSSCH) is configured for each of said one or more resource pools. 3. A communication method implemented by a user equipment (UE), comprising the steps of: receiving first information for configuring a direct connection bandwidth fraction (BWP) and second information for configuring one or more resource pools for transmission and/or reception on a direct connection; a physical direct connection control channel (PSCCH) and a physical shared channel for direct connection data transmission (PSSCH) are transmitted, wherein the subcarrier spacing is associated with the direct-connect BWP, and demodulation reference signal configuration for PSCCH and PSSCH is performed for each of said one or more resource pools.

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