Transmission mechanism with 120 kHz subcarrier spacing in fr1 for wireless communications

Abstract

This document generally relates to wireless communications involving a communication node that communicates in FR1 at a subcarrier spacing of 120 kHz. A network device may determine to communicate in a cell at a carrier frequency within a frequency range 1 (FR1), and may transmit a set of synchronization signals and physical broadcast channel blocks (SSBs) at a subcarrier spacing (SCS) of 60 kHz or 120 kHz in a carrier band within the FR1. A user equipment searching for a cell at a carrier frequency within the FR1 may detect a set of SSBs at an SCS of 60 kHz or 120 kHz in the carrier frequency.

Description

Technical Field

[0001] This document is generally directed to communications with 120 kilohertz (kHz) subcarrier spacing in frequency range 1 (FR1) for wireless communications. Background Art

[0002] Communications in frequency range 1 (FR1) do not currently support a subcarrier spacing (SCS) of 120 kilohertz (kHz). However, in some applications or scenarios, such as business (ToB) applications, user equipment (UE) specific applications (such as RedCap), or applications where low latency reduction in FR1 is desired or required, it may be desirable or even necessary to communicate using 120 SCS in FR1. Therefore, a way to implement 120 kHz SCS in FR1 may be desirable. Summary of the invention

[0003] This document relates to methods, systems, apparatuses, and devices for wireless communications. In some embodiments, a method for wireless communications includes: a method for wireless communications, the method comprising: searching, by a user equipment, for a cell at a carrier frequency within a frequency range 1 (FR1); and detecting, by the user equipment, a set of synchronization signals and a physical broadcast channel block (SSB) at a subcarrier spacing (SCS) of 60 kilohertz (kHz) or 120 kHz in the carrier frequency.

[0004] In some other embodiments, a method for wireless communication includes: determining, by a network device, to communicate in a cell at a carrier frequency within a frequency range 1 (FR1); and transmitting, by the network device, a set of synchronization signals and a physical broadcast channel block (SSB) at a subcarrier spacing (SCS) of 60 kilohertz (kHz) or 120 kHz in the carrier frequency within FR1.

[0005] In some other embodiments, a device such as a network device is disclosed. The device may include one or more processors and one or more memories, wherein the one or more processors are configured to read computer codes from the one or more memories to implement any of the above methods.

[0006] In yet other embodiments, a computer program product is disclosed. The computer program product may include a non-transitory computer-readable program medium having computer code stored thereon, and when the computer code is executed by one or more processors, the one or more processors implement any of the above methods.

[0007] The above and other aspects and embodiments thereof will be described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A block diagram of an example of a wireless communication system is shown.

[0009] Figure 2 is a flow chart of an example method for wireless communication.

[0010] Figure 3 is a flow chart of an example method for wireless communication.

[0011] Figure 4 is a schematic diagram of a synchronization signal and physical broadcast channel block (SSB) pattern with a 30 kilohertz (kHz) subcarrier spacing (SCS).

[0012] Figure 5 is a schematic diagram of SSB mode with 60kHz SCS.

[0013] Figure 6 is a schematic diagram of SSB mode with 120kHz SCS.

[0014] Figure 7 is a schematic diagram of SSB mode with 120kHz SCS and extended cyclic prefix (ECP).

[0015] Figure 8 is a schematic diagram of SSB mode with 120kHz SCS and ECP. DETAILED DESCRIPTION

[0016] This specification describes various embodiments of systems, apparatuses, devices, and methods for wireless communications associated with communications in frequency range 1 (FR1) with 120 kilohertz (kHz) subcarrier spacing (SCS).

[0017] Figure 1 A schematic diagram of an example wireless communication system 100 is shown, which includes a plurality of communication nodes (or just nodes) configured to wirelessly communicate with each other. Generally, the communication nodes include at least one user equipment 102 and at least one network device 104. Figure 1 The example wireless communication system 100 in FIG. 1 is shown as including two user devices 102 (including a first user device 102(1) and a second user device 102(2)) and one network device 104. However, various other examples of the wireless communication system 100 including any of various combinations of one or more user devices 102 and / or one or more network devices 104 are possible.

[0018] Generally, a user device as described herein (such as user device 102) may include a single electronic device or apparatus capable of wireless communication over a network, or multiple electronic devices or apparatuses (e.g., a network of). A user device may include or otherwise be referred to as a user terminal, user terminal device, or user equipment (UE). In addition, the user device may be or include, but is not limited to, a mobile device (such as a mobile phone, a smart phone, a smart watch, a tablet, a laptop, a vehicle or other vessel (powered by human power, motor or engine, such as a car, airplane, train, boat or bicycle as a non-limiting example) or a fixed or stationary device (such as a desktop computer or other computing device that is not usually moved for a long time, such as an appliance, other relatively heavy devices including the Internet of Things (IoT), or a computing device used in a commercial or industrial environment as a non-limiting example). In various embodiments, the user device 102 may include a transceiver circuit 106 coupled to an antenna 108 to enable wireless communication with the network device 104. The transceiver circuit 106 may also be coupled to a processor 110, which may also be coupled to a memory 112 or other storage device. The memory 112 may store therein instructions or codes that, when read and executed by the processor 110, cause the processor 110 to implement the various methods described herein.

[0019] In addition, in general, a network device as described herein (such as network device 104) may include a single electronic device or apparatus, or multiple electronic devices or apparatuses (e.g., a network of), and may include one or more wireless access nodes, base stations, or other wireless network access points that are capable of wirelessly communicating with one or more user devices and / or with one or more other network devices 104 over a network. For example, in various embodiments, network device 104 may include a 4G LTE base station, a 5G NR base station, a 5G central unit base station, a 5G distributed unit base station, a next generation Node B (gNB), an enhanced Node B (eNB), or other similar or next generation (e.g., 6G) base station. Network device 104 may include a transceiver circuit 114 coupled to an antenna 116, which may include an antenna tower 118 in various ways to enable wireless communication with user device 102 or another network device 104. Transceiver circuit 114 may also be coupled to one or more processors 120, which may also be coupled to a memory 122 or other storage device. The memory 122 may store therein instructions or codes that, when read and executed by the processor 120 , cause the processor 120 to implement one or more of the methods described herein.

[0020] In various embodiments, two communication nodes in the wireless system 100 (such as a user device 102 and a network device 104, two user devices 102 without the network device 104, or two network devices 104 without the user device 102) can be configured to wirelessly communicate with each other in or through a mobile network and / or a wireless access network according to one or more standards and / or specifications. In general, the standards and / or specifications can define rules or procedures under which communication nodes can communicate wirelessly, which in various embodiments can include rules and procedures for communicating in millimeter (mm) bands and / or using multiple antenna schemes and beamforming functions. Additionally or alternatively, the standards and / or specifications are standards and / or specifications that define radio access technologies and / or cellular technologies, such as, as non-limiting examples, fourth generation (4G) long term evolution (LTE), fifth generation (5G) new radio (NR), or unlicensed new radio (NR-U).

[0021] In addition, in the wireless system 100, the communication nodes are configured to wirelessly transmit signals between each other. Generally, the communication between two communication nodes in the wireless system 100 can be or include transmission or reception, and is usually performed simultaneously, depending on the perspective of the specific nodes in the communication. For example, for a given communication between a first node and a second node, wherein the first node is transmitting a signal to the second node, and the second node is receiving a signal from the first node, the first node can be referred to as a source or transmission node or device, the second node can be referred to as a destination or receiving node or device, and the communication can be considered as the transmission of the first node and the reception of the second node. Of course, since the communication nodes in the wireless system 100 can both send and receive signals, a single communication node can be a transmission / source node and a receiving / destination node at the same time, or switch between being a source / transmission node and a destination / receiving node.

[0022] In addition, a specific signal may be characterized or defined as an uplink (UL) signal, a downlink (DL) signal, or a sidelink (SL) signal. An uplink signal is a signal transmitted from a user device 102 to a network device 104. A downlink signal is a signal transmitted from a network device 104 to a user device 102. A sidelink signal is a signal transmitted from one user device 102 to another user device 102, or a signal transmitted from one network device 104 to another network device 104. In addition, for a sidelink transmission, a first / source user device 102 transmits a sidelink signal directly to a second / destination user device 102 without forwarding the sidelink signal to the network device 104 at all.

[0023] In addition, signals transmitted between communication nodes in the system 100 can be characterized or defined as data signals or control signals. In general, data signals are signals that include or carry data, such as multimedia data (e.g., voice and / or image data), and control signals are signals that carry control information that configures the communication nodes in some way to communicate with each other, or otherwise controls how the communication nodes transmit data signals to each other. In addition, certain signals can be defined or characterized by a combination of data / control and uplink / downlink / sidelink, including uplink control signals, uplink data signals, downlink control signals, downlink data signals, sidelink control signals, and sidelink data signals.

[0024] For at least some specifications, such as 5G NR, data signals and control signals are transmitted and / or carried on physical channels. Typically, a physical channel corresponds to a set of time-frequency resources for signal transmission. Different types of physical channels can be used to transmit different types of signals. For example, a physical data channel (or only a data channel), also referred to herein as a traffic channel, is used to transmit data signals, and a physical control channel (or only a control channel) is used to transmit control signals. Example types of traffic channels (or physical data channels) include, but are not limited to, a physical downlink shared channel (PDSCH) for transmitting downlink data signals, a physical uplink shared channel (PUSCH) for transmitting uplink data signals, and a physical sidelink shared channel (PSSCH) for transmitting sidelink data signals. In addition, example types of physical control channels include, but are not limited to, a physical downlink control channel (PDCCH) for transmitting downlink control signals, a physical uplink control channel (PUCCH) for transmitting uplink control signals, and a physical sidelink control channel (PSCCH) for transmitting sidelink control signals. As used herein for simplicity, unless otherwise specified, a particular type of physical channel is also used to refer to a signal transmitted on the particular type of physical channel and / or a transmission on the particular type of transmission. As an example, PDSCH refers to the physical downlink shared channel itself, a downlink data signal transmitted on the PDSCH, or a downlink data transmission. Therefore, a communication node transmitting or receiving a PDSCH means that the communication node is transmitting or receiving a signal on the PDSCH.

[0025] In addition, for at least some specifications (such as 5G NR) and / or for at least some types of control signals, the control signals transmitted by the communication nodes may include control information including information necessary to enable transmission of one or more data signals between the communication nodes and / or information necessary to schedule one or more data channels (or one or more transmissions on the data channels). For example, such control information may include information necessary to correctly receive, decode, and demodulate data signals received on a physical data channel during data transmission and / or information necessary for an uplink scheduling grant to inform a user equipment of resources and a transmission format for uplink data transmission. In some embodiments, the control information includes downlink control information (DCI) transmitted from the network device 104 to the user equipment 102 in the downlink direction. In other embodiments, the control information includes uplink control information (UCI) transmitted from the user equipment 102 to the network device 104 in the uplink direction, or sidelink control information (SCI) transmitted from one user equipment 102(1) to another user equipment 102(2) in the sidelink direction.

[0026] In addition, in various embodiments, the communication nodes (including user equipment 102 and / or network equipment 104) in the wireless communication system 100 can be configured to transmit (including transmission and / or reception) signals, or otherwise operate in one or more frequency ranges (FR). Each frequency range FR includes one or more frequency bands. Each frequency band of a given FR has an upper limit, a lower limit and / or a center frequency falling within a given FR. In addition, within a given system 100, each frequency range in one or more frequency ranges can be defined by a specification, a standard or a protocol, and the communication nodes in the system 100 are configured to operate according to the specification, the standard or the protocol. For at least some embodiments, there are at least two frequency ranges, including (the first frequency range) frequency range 1 (Frequency Range 1, FR1) and frequency range 2 (Frequency Range 2, FR2). Typically, FR1 is a lower frequency range than FR2 because the upper limit of FR1 is lower than the lower limit of FR2. In some embodiments, those defined by 5G NR, FR1 are lower than 10 GHz. In particular, in these embodiments, FR1 is lower than 8 GHz. In other embodiments of these embodiments, the lower limit of FR1 is 410 megahertz (MHz). Additionally or alternatively, the upper limit of FR1 is 7125MHz (7.125GHz). In other embodiments, the upper limit of FR1 is or less than 6GHz. In addition, in some embodiments, FR2 is greater than 20GHz. In particular, in these embodiments, FR2 is in the range from 24250MHz (24.250GHz) to 71000MHz (71GHz). In addition, in some embodiments, a given FR can be divided or organized into sub-ranges. For example, in some embodiments, FR2 includes two sub-ranges FR2-1 and FR2-2. In particular, in these embodiments, FR2-2 extends from 24250MHz to 52600MHz, and FR2-2 extends from 52600MHz to 71000MHz. Table 1 below shows an example configuration of FR1 and FR2.

[0027]

[0028] Table 1: Example frequency values ​​for FR1 and FR2

[0029] Furthermore, in any of the various embodiments, the communication nodes in the wireless communication system 100 may be configured to communicate according to a numerology associated with the frequency range and / or sub-range in which the communication node is configured to communicate. The numerology may be identified by a μ value, which in turn is associated with and / or corresponds to certain information, including a subcarrier spacing (SCS), one or more cyclic prefix (CP) types, whether data is supported, whether synchronization (synch) is supported, and the frequency range and / or sub-range in which the communication node communicates for a given μ value.

[0030] The value of μ is an integer greater than or equal to zero. In some embodiments, μ is an integer ranging from zero to six, although values ​​of μ greater than six may be possible.

[0031] In some embodiments, SCS may be a function of μ. An example function is SCS (also denoted as Δf) = 2 μ 15 [kHz]. Additionally or alternatively, each μ may be associated with a different value in a plurality of SCS values. For at least some embodiments, the SCS is approximately kilohertz (kHz), non-limiting examples of which include: 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, and 960 kHz.

[0032] Typically, a cyclic prefix (CP) refers to prefixing a symbol with a repeat at the end. The CP may be part of a preamble used by the user equipment 102 to access the cell it has found, such as part of a random access process. For example, in order to generate a preamble, a communication node may subject a preamble sequence to an orthogonal frequency division multiplexing (OFDM) modulator, the modulated sequence is repeated N times, and the CP is added to a block of N repeated symbols output, so that the CP is inserted once per block of N repeated symbols, rather than once per OFDM symbol. Typically, a preamble may have an associated guard time between the preamble and other signal transmissions to reduce or eliminate the uncertainty of other transmissions or uplink resources that occur during the absence of the preamble transmission, and / or to minimize inter-symbol interference. With respect to parameter sets, in some embodiments, CP types may include "normal" and "extended". An extended cyclic prefix (ECP) may have or implement a longer guard period between symbols compared to a normal cyclic prefix (NCP). In addition, downlink and uplink transmissions may be organized into frames. Each frame may have a specific duration, such as, for example, 10 milliseconds (ms). In addition, a frame may include or be divided into a certain number of subframes. For example, a frame may be divided into ten subframes. In addition, the subframes may have the same duration as each other. For example, a 10ms frame may be divided into 10 subframes, wherein the duration of each subframe is 1ms. In addition, each frame may be divided into two half frames of equal size. For example, a frame including ten subframes may be divided into two half frames, wherein each half frame includes five subframes. In addition, for at least some embodiments, the time slot duration is 14 symbols with a normal CP and 12 symbols with an extended CP, and is scaled over time according to the subcarrier spacing used so that there is always an integer number of time slots in a subframe.

[0033] In addition, whether data is supported may indicate whether data (or data signals) can be transmitted between communication nodes for a given μ value. In addition, whether synchronization is supported may indicate whether synchronization signals (e.g., primary synchronization signals (PSS) and / or secondary synchronization signals (SSS)) can be transmitted between communication nodes for a given μ value. Table 2 below shows an example set of parameter sets for μ values ​​from 0 to 6.

[0034]

[0035]

[0036] Table 2: Supported transmission parameter sets

[0037] As indicated in Table 2, for some embodiments, communications with 120kHz SCS (μ=3) are not performed in FR1. However, communications with 120kHz SCS in FR1 may be desirable in any of a variety of applications, such as business (ToB) scenarios, user equipment (UE) specific applications (such as RedCap), and / or to achieve low latency reduction needs or requirements in FR1. Therefore, the following describes an embodiment of a communication node that communicates with 120kHz SCS in FR1.

[0038] Figure 2 A flow chart of an example method 200 of wireless communication is shown, which involves communicating in FR1 with a 120kHz SCS. At block 202, a user device 102 may search for a cell at a carrier frequency within FR1. For example, the user device 102 may search or find a cell when the user device 102 enters a coverage area of ​​the wireless communication system 100, or the user device 102 may be searching for a new cell when moving within the current system 100. The user device 102 may search for a cell so that it may access the cell and in turn transmit data or other signals with a network device 104 in the wireless communication system 100. The search performed at block 202 may be part of a cell search process, in which the user device 102 acquires time and frequency synchronization with the cell and detects a physical layer cell identity (ID) of the cell. Once the user device 102 has accessed the cell, the user device 102 may be in a connected state and transmit data or other signals with the network device 104. At block 204, the user device 102, the user device 102 may detect a set of synchronization signals (SS) and physical broadcast channel (PBCH) blocks (also referred to as SS / PBCH blocks or SSBs) in a carrier frequency with a 60 kHz subcarrier spacing (SCS) or a 120 kHz SCS. The user device 102 may perform the detection upon, in response to, and / or after receiving a set of SSBs. In addition, the user device 102 may receive a set of SSBs from the network device 104.

[0039] Figure 3 A flow chart of another example method 300 of wireless communication is shown, which involves communicating at 120 kHz SCS in FR1. At block 302, the network device 104 may determine to communicate in a cell at a carrier frequency in FR1. At block 304, the network device 104 may transmit a set of SSBs at a 60 kHz SCS or a 120 kHz SCS in a carrier frequency in FR1.

[0040] In some embodiments of method 200 and / or method 300, a group of SSBs are transmitted at 60kHz SCS, the number of SSBs in a half-frame is 8, and the first symbol index of each SSB in the half-frame is {2, 8, 16, 22, 30, 36, 44, 50}. Generally, as used herein, a first symbol index defines the position of the first symbol of a transmitted SSB in a time slot, where a first symbol index of 0 is the first symbol of the first time slot in a half-frame. For example, a first symbol index of 2 for a given SSB to be transmitted in a given half-frame indicates that the first symbol in the given SSB is transmitted in the third symbol of the first time slot of the given half-frame.

[0041] Additionally or alternatively, in some embodiments of method 200 and / or method 300, a group of SSBs are transmitted at 120kHz SCS, the number of SSBs in a half-frame is 64, and the first symbol index of each SSB in the half-frame is {8, 12, 16, 20, 32, 36, 40, 44, 64, 68, 72, 76, 88, 92, 96, 100} + 140*n, where n = 0, 1, 2, and 3.

[0042] Additionally or alternatively, in some embodiments of method 200 and / or method 300, a group of SSBs is transmitted at 120kHz SCS and with an extended cyclic prefix (ECP). In some of these embodiments, the number of SSBs in a half-frame is 64, and the first symbol index of each SSB in the half-frame is {4, 8, 16, 20} + 24*n, where n = 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, and 18. In other of these embodiments, the number of SSBs transmitted in a half-frame is 64, and the first symbol index of each SSB in the half-frame is {2, 8, 14, 20} + 24*n, where n = 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, and 18.

[0043] Additionally or alternatively, in some embodiments of method 200 and / or method 300, 120kHz SCS is supported for public data, and when a group of SSBs with 120kHz SCS or 60kHz SCS is detected, the current 1 bit reused in the master information block (MIB) indicates one of two candidate values ​​of SCS for public data. The two candidate values ​​include at least 120kHz.

[0044] Additionally or alternatively, in some embodiments of method 200 and / or method 300, 120kHz SCS is supported for public data, and the current 1 bit reused and the reserved 1 bit in the master information block (MIB) indicate one of three or four candidate values. The three or four candidate values ​​include at least 120kHz.

[0045] Additionally or alternatively, in some embodiments of method 200 and / or method 300, 120 kHz SCS is supported for common data, and when an SSB with a 15 kHz SCS is detected, a subcarrier offset from subcarrier 0 in a common resource block to subcarrier 0 of the SSB includes seven bits, wherein four of the seven bits are from a frequency offset value in a master information block (MIB), and three of the seven bits are from the last three bits of a payload of a physical broadcast channel (PBCH) added by a physical layer of the network device 104. And spare bits in the payload added by higher layers of the network device 104. A higher layer is a layer higher than the physical layer (PHY).

[0046] Additionally or alternatively, in some embodiments of method 200 and / or method 300, 120 kHz SCS is supported for common data, and when an SSB with 30 kHz SCS is detected, or 60 kHz SCS is supported for common data, and when an SSB with 15 kHz SCS is detected, a subcarrier offset from subcarrier 0 in a common resource block to subcarrier 0 of an SSB includes six bits, four of the seven bits from a frequency offset value in a master information block (MIB), and two of the six bits from the last three bits of a payload of a physical broadcast channel (PBCH) added by a physical layer of the network device 104. And spare bits in the payload added by higher layers of network device 104.

[0047] Example 1

[0048] In some embodiments, only data signals with 120kHz SCS in FR1 are transmitted. That is, 120kHz SCS may not be used for synchronization signals. In other embodiments, data signals and synchronization signals with 60kHz or 120kHz SCS may be transmitted, which may allow the communication node to support an extended cyclic prefix (ECP) for 120kHz SCS data, similar to how the ECP for 60kHz SCS is supported; and / or 30kHz and / or 60kHz SSB modes may be used, which may be best matched to data transmitted with 120kHz SCS.

[0049] Furthermore, for embodiments where ECP is used for 120 kHz SCS, there may be twelve (12) OFDM symbols in one slot.

[0050] Furthermore, for some embodiments, transmitting data at 120 kHz SCS in FR1 may use SSB mode with 30 kHz SCS (eg, SSB is transmitted at 30 kHz SCS). Four symbols transmitted at 30 kHz SCS correspond to sixteen symbols transmitted at 120 kHz SCS. Figure 4 A schematic diagram of an example C SSB pattern with a 30kHz SCS is shown, where SSBs with a 30kHz SCS are used to be multiplexed with data with a 60kHz SCS. Such a configuration can also be used to multiplex SSBs with a 30kHz SCS with data with a 120kHz SCS. For such a configuration, in some embodiments, the first symbol index S of each SSB within a half-frame (e.g., a 5 millisecond (ms) half-frame) is: S={2, 8, 16, 22, 30, 36, 44, 50}; and for frequency division duplex (FDD) of 3 to 6 GHz and time division duplex (TDD) of 2.4 to 6 GHz, the number of SSBs within the half-frame L is eight (i.e., L=8). In other embodiments, for FDD of 0 to 3 GHz and TDD of 0 to 2.4 GHz, the first symbol index S={2, 8, 16, 22}, and the number of SSBs within the half-frame L is four (i.e., L=4).

[0051] In other embodiments, communicating in FR1 with 120 kHz SCS may use SSB mode with 60 kHz SCS. Figure 5 Figure 1 shows a schematic diagram of SSB mode with 60kHz SCS. Figure 5 As shown, SSBs with 60kHz SCS can be multiplexed with data with 120kHz SCS. For such a configuration, in some embodiments, for FDD from 3 to 6 GHz and TDD from 2.4 to 6 GHz, the first symbol index of each SSB within a half-frame (e.g., a 5ms half-frame) is S={2, 8, 16, 22, 30, 36, 44, 50}, and the number of SSBs within a half-frame L is 8 (i.e., L=8). In other embodiments, for FDD from 0 to 3 GHz and TDD from 0 to 2.4 GHz, the first symbol index S={2, 8, 16, 22}, and the number of SSBs within a half-frame L is four (i.e., L=4).

[0052] In other embodiments, the number L of SSBs with 60kHz SCS within a half-frame is greater than 8. For example, L=16, 24, 32, or 40. For example, S={2, 8, 16, 22, 30, 36, 44, 50}+n*56, n=0, 1; and L=16. As another example, S={2, 8, 16, 22, 30, 36, 44, 50}+n*56, n=0, 1, 2; and L=24. As another example, S={2, 8, 16, 22, 30, 36, 44, 50}+n*56, n=0, 1, 2; and L=32. As another example, S={2, 8, 16, 22}+n*28, n=0, 1, 2, 3, 5, 6, 7, 8; and L=32. As another example, S={2, 8, 16, 22, 30, 36, 44, 50}+n*56, n=0, 1, 2, 3, 4; and L=40.

[0053] In some embodiments, the 120 kHz SCS in FRI is used only to transmit data, and the SSB mode with 60 kHz SCS may provide the best match with the control channel or data with 120 kHz SCS.

[0054] Example 2

[0055] Additionally or alternatively, in some embodiments, both the data signal and the synchronization signal are transmitted in FR1 at 120kHz SCS.

[0056] For embodiments in which communications with 120 kHz SCS and with ECP are performed, there may be twelve OFDM symbols in one slot.

[0057] Furthermore, in the case where SSBs are transmitted with a 120 kHz SCS in FR1, the number of SSBs within a half frame (eg, a 5 ms half frame) is eight or sixty-four (ie, L=8 or 64). Figure 6 Figure 1 shows a schematic diagram of SSB mode with 120kHz SCS. Figure 6 As shown, SSBs with 120kHz SCS can be multiplexed with data with 30kHz SCS. For such a configuration, in some embodiments, the first symbol index S of each SSB in a half-frame is: S=8, 12, 16, 20, 32, 36, 40, 44, 64, 68, 72, 76, 88, 92, 96, 100}+140*n, n=0, 1, 2, 3; and the number L of SSBs in a half-frame is sixty-four (i.e., L=64).

[0058] Additionally or alternatively, in some embodiments, the number L of SSBs with 120kHz SCS within a half-frame is L=8. For example, S={8, 12, 16, 20, 32, 36, 40, 44}; and L=8. Figure 6 In the example shown, the eight SSBs may be the first eight SSBs shown.

[0059] Additionally or alternatively, in some embodiments, the number L of SSBs with 120kHz SCS within a half-frame is eight (i.e., L=8). For example, S={4, 8, 16, 20, 32, 36, 44, 48}; and L=8. Additionally or alternatively, the first eight SSBs in the conventional example D 120kHz SCS SSB pattern with L=64 may have a first symbol index S={4, 8, 16, 20}+28*n, n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18.

[0060] Furthermore, in some embodiments, both data signals and synchronization signals may be transmitted with 120 kHz SCS in FR 1. For such embodiments, SSB mode with 120 kHz SCS may be used to match control channels or data with 30 kHz SCS.

[0061] Example 3

[0062] Additionally or alternatively, both data signals and synchronization signals may be transmitted in FR1 at 120 kHz SCS.

[0063] Furthermore, for communications with 120 kHz SCS and with ECP, there may be twelve OFDM symbols in one slot.

[0064] Additionally or alternatively, in some embodiments, SSBs may be transmitted with 120kHz SCS and with ECP in FR1. For at least some of these embodiments, the number of SSBs within a half-frame (eg, 5ms half-frame) may be eight or sixty-four (ie, L=8 or 64). Figure 7 A schematic diagram of an SSB mode with 120kHz SCS and ECP is shown. For such a configuration, the first symbol index S of each SSB within a half-frame (e.g., a 5ms half-frame) is S={4, 8, 16, 20}+24*n, n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18; and the number of SSBs in a subframe L is sixty-four (i.e., L=64).

[0065] Additionally or alternatively, in some embodiments, the number L of SSBs with 120kHz SCS in a half-frame is eight (ie, L=8). For example, S={4, 8, 16, 20, 28, 32, 40, 44}; and L=8. For example, in Figure 7 In the example configuration in , the eight SSBs can be the first 8 SSBs shown.

[0066] Additionally or alternatively, for embodiments including an SSB mode with 120 kHz SCS and ECP in FR1, the number of SSBs in a half-frame, L, may be eight or sixty-four (ie, L=8 or 64). Figure 8 Figure 1 shows a schematic diagram of SSB mode with 120kHz SCS and ECP. Figure 8 As shown, SSB with 120kHz SCS can be multiplexed with data with 60 or 120kHz SCS and with ECP. For example, the first symbol index S arriving at SSB in a half frame (e.g., 5ms half frame) is S={2,8,14,20}+24*n, n=0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18; and the number L of SSBs in a half frame is sixty-four (L=64).

[0067] Additionally or alternatively, the number L of SSBs in a half-frame is eight (ie, L=8), and the SSB first symbol index S in the half-frame is: S={2, 8, 14, 20, 26, 32, 38, 44}. Figure 8 In the example in , the eight SSBs may be the first eight SSBs shown.

[0068] Furthermore, in some embodiments, both data signals and synchronization signals are transmitted with 120kHz SCS. SSB mode with 120kHz SCS and ECP can be used to match control channels or data with 60 or 120kHz SCS and with ECP.

[0069] Example 4

[0070] In some embodiments, SCS 120kHz SCS may be used for and / or support common data, such as system information block 1 (SIB1), Msg.2 / 4 and MsgB for initial access, paging and broadcast SI messages.

[0071] In some embodiments, 1 bit in the master information block (MIB) is used to indicate an SCS value for common data. For example, the information element subCarrierSpacingCommon can be used to indicate the subcarrier spacing of SIB1, Msg.2 / 4, and MsgB for initial access, paging, and broadcast SI messages. If the user equipment 102 obtains the MIB on the FR1 carrier frequency, the value scs15or60 can correspond to 15kHz, and the value scs30or120 can correspond to 30kHz. If the user equipment 102 obtains the MIB on the FR2 carrier frequency, the value scs15or60 can correspond to 60kHz, and the value scs30or120 can correspond to 120kHz. For operation using shared spectrum channel access in FR1 and for operation in FR2-2, the subcarrier spacing of SIB1, Msg2. / 4, and MsgB for initial access, paging, and broadcast SI messages can be the same as the subcarrier spacing used for the corresponding SSB. For operation using shared spectrum channel access, this field may instead be used to derive the quasi-co-location (QCL) relationship between the SSBs.

[0072] For embodiments in which the SSB is transmitted with a 60 or 120 kHz SCS and the number of SSBs in a half-frame L is eight (i.e., L=8), the potential or candidate SCSs for the common data that may be indicated may include one or more of the following alternative SCS value candidates: Alternative 1: 30 kHz or 120 kHz; Alternative 2: 15 kHz or 120 kHz; Alternative 3: 15 kHz, 30 kHz, or 120 kHz; or Alternative 4: 15 kHz, 30 kHz, 60 kHz, or 120 kHz. In some embodiments, for Alternative 1 or Alternative 2, if an SSB with a 60 kHz or 120 kHz SCS in FR1 is detected, the current 1 bit in the MIB may be reused to indicate one of the two candidate values. Additionally or alternatively, in some embodiments, for Alternative 3 or Alternative 4, the reused current 1 bit in the MIB and another reserved 1 bit may be used to indicate one of three or four candidate values. In particular, in these embodiments, the reserved 1 bit is one of the following: or spare bits, where and The seventh and eighth bits are respectively the MIB information (or the payload of the physical broadcast channel (PBCH)) added by the physical layer (PHY) of the network device 104, and the spare bits are bits located in the payload of the PBCH added by a higher layer of the network device 104, where the higher layer is a layer higher than the physical layer, such as a medium access control (MAC) layer, a radio link control (RLC) layer, a packet data convergence protocol (PDCP) layer, or a radio resource control (RRC) layer as non-limiting examples.

[0073] In addition, for embodiments in which the SSB is transmitted with a 120kHz SCS and the number of SSBs in a half frame L is sixty-four (i.e., L=64), the SCS of the common data may be indicated according to one or more of the following alternative SCS value candidates: Alternative 1: 30kHz or 120kHz; Alternative 2: 15kHz or 120kHz; Alternative 3: 15kHz, 30kHz, or 120kHz; or Alternative 4: 15kHz, 30kHz, 60kHz, or 120kHz. In some embodiments, for Alternative 1 or Alternative 2, if an SSB with a 120kHz SCS in FR1 is detected, the current 1 bit in the MIB may be reused to indicate one of the two candidate values. For Alternative 3 or Alternative 4, the reused current 1 bit in the MIB and another reserved 1 bit may be used to indicate one of three or four candidate values. For at least some of these embodiments, the reserved 1 bit is one of the following: or spare bits, where and The seventh and eighth bits are respectively the MIB information (or PBCH payload) added by the physical layer (PHY) of the network device 104, and the spare bits are spare bits of the PDCH payload added by a higher layer.

[0074] Additionally or alternatively, for embodiments in which SSBs are transmitted with a 120kHz SCS, if an SSB with 120kHz is detected in FR1, the subcarrier spacing of SIB1, Msg2. / 4, and MsgB used for initial access, paging, and broadcast SI messages may be the same as the subcarrier spacing used for the corresponding SSB.

[0075] In addition, the 120kHz SCS in FR1 may be used for and / or support public data. In some of these embodiments, more than two potential candidate values ​​of the SCS for public data may be indicated. Such embodiments may allow user equipment 102 with different capabilities to support shared public data with a traditional 30kHz SCS.

[0076] Example 5

[0077] Additionally or alternatively, for embodiments with 120kHz SCS for common data (such as SIB1, Msg2. / 4 and MsgB for initial access, paging and broadcast SI messages), k may be indicated. SSB The value of k SSB From the public resource block In some embodiments, is obtained from the higher layer parameter offsetToPointA. For SS / PBCH block type A, μ∈{0,1} and k SSB ∈{0,1,2,...,23}, where the number k SSB and It is represented with 15kHz subcarrier spacing, and for SS / PBCH block type B in FR2-1, μ∈{3,4} and k SSB ∈{0,1,2,...,11}, where the number k SSB expressed in terms of the subcarrier spacing provided by the higher layer parameter subCarrierSpacingCommon and It is expressed with a subcarrier spacing of 60kHz. SSB ∈{0,1,2,...,11}, 4 bits of the frequency offset value (e.g., ssb-SubcarrierOffset) in the MIB may be used to indicate k SSB Additionally or alternatively, for a case where k SSB ∈{0,1,2,...,23}, five bits may be used to indicate k SSB , where four of the five bits may include 4 bits of a frequency offset value (e.g., ssb-SubcarrierOffset) in the MIB, and one of the five bits may be a bit in the MIB added by the physical layer of the network device 105, such as It is the sixth bit of the MIB information added by the physical layer of the network device 104 .

[0078] Additionally or alternatively, in the case where 120kHz SCS is supported by common data and 120kHz SCS for common data is to be indicated by SSB with 15kHz SCS, up to 96 states or different values ​​may be represented by the 7-bit value k. SSBIn some of these embodiments, four of the seven bits may come from 4 bits of a frequency offset value (e.g., ssb-SubcarrierOffset) in the MIB, and the other three bits may come from One of the following combinations of and spare bits: Combination 1: Spare bits; combination 2: Spare bits; combination 3: Spare bits.

[0079] Additionally or alternatively, in some embodiments where a 120kHz SCS for common data is to be indicated by an SSB with a 30kHz SCS, or a 60kHz SCS for common data is to be indicated by an SSB with a 15kHz SCS, and the 120kHz SCS for common data is not required to be indicated by an SSB with a 15kHz SCS, then up to 48 possible states or values ​​may be indicated via k SSB Four of the six bits may come from the frequency offset value in the MIB (e.g., ssb-SubcarrierOffset), and the other two of the six bits may come from and one of the following combinations of spare bits: Spare bits; Spare bits; or Spare bits.

[0080] Additionally or alternatively, for embodiments where SSB is transmitted in FR1 at 120 kHz. If the SCS of the public data can be 15 KHz, 30 KHz, 60 kHz or 120 kHz, then k SSB ∈{0,1,2,...,11}, which can be indicated using four bits. In some of these embodiments, the four bits of ssb-SubcarrierOffset in the MIB are used to indicate k SSB 4 bits.

[0081] Additionally, for embodiments where the public data uses or supports 120kHz SCS in FR1, up to seven bits may be used to indicate k SSB This may allow user devices 102 with different capabilities to support a shared SSB with either a 15 kHz or 30 kHz SCS.

[0082] The above description and accompanying drawings provide specific example embodiments and implementations. However, the described subject matter may be embodied in a variety of different forms, and therefore, the subject matter covered or claimed is intended to be interpreted as not limited to any example embodiment set forth herein. It is intended that a reasonably broad scope of the subject matter be claimed or covered. Among other things, for example, the subject matter may be embodied as a method, device, component, system, or non-transitory computer-readable medium for storing computer code. Thus, the embodiments may, for example, take the form of hardware, software, firmware, storage media, or any combination thereof. For example, the above method embodiments may be implemented by a component, device, or system including a memory and a processor by executing a computer code stored in the memory.

[0083] Throughout the specification and claims, terms may have nuanced meanings that are suggested or implied by the context, beyond the explicitly stated meanings. Likewise, the phrase "in one embodiment / implementation" as used herein does not necessarily refer to the same embodiment, and the phrase "in another embodiment / implementation" as used herein does not necessarily refer to a different embodiment. For example, the claimed subject matter includes combinations of all or part of the example embodiments.

[0084] In general, terms can be understood at least in part from the usage of the context. For example, terms such as "and", "or" or "and / or" as used herein can include multiple meanings, which can depend at least in part on the context in which such terms are used. Typically, if "or" is used for an association list, such as A, B or C, it is intended to mean that A, B and C are used here in an inclusive sense, and A, B or C are used here in an exclusive sense. In addition, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure or characteristic in a singular sense, or can be used to describe a combination of features, structures or characteristics in a plural sense. Similarly, terms such as "one", "an" or "the" can be understood to express singular usage or express plural usage, depending at least in part on the context. In addition, the term "based on" can be understood to not necessarily be intended to express a set of exclusive factors, but can again depend at least in part on the context to allow the presence of additional factors that are not necessarily clearly described.

[0085] References to features, advantages, or similar language in this specification do not imply that all features and advantages that may be realized by the present solution should be or are included in any single embodiment thereof. Rather, language referring to features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussion of features and advantages and similar language throughout this specification may, but does not necessarily, refer to the same embodiment.

[0086] Furthermore, in one or more embodiments, the features, advantages, and characteristics of the present solution may be combined in any suitable manner. Based on the description herein, one of ordinary skill in the relevant art will recognize that the present solution may be practiced without one or more of the particular features or advantages of a particular embodiment. In other cases, additional features and advantages may be identified in a particular embodiment that may not be present in all embodiments of the present solution.

[0087] The subject matter of the present disclosure may also relate to or include the following aspects, among others:

[0088] The first aspect includes a method for wireless communication, the method comprising: searching for a cell at a carrier frequency within a frequency range 1 (FR1) by a user equipment; and detecting a set of synchronization signals and a physical broadcast channel block (SSB) at a subcarrier spacing (SCS) of 60 kilohertz (kHz) or 120 kHz in the carrier frequency by the user equipment.

[0089] The second aspect includes a method for wireless communication, the method comprising: determining, by a network device, to communicate in a cell at a carrier frequency within a frequency range 1 (FR1); and transmitting, by the network device, a set of synchronization signals and a physical broadcast channel block (SSB) at a subcarrier spacing (SCS) of 60 kilohertz (kHz) or 120 kHz at the carrier frequency within FR1.

[0090] The third aspect includes any one of the first aspect or the second aspect, and also includes that the SCS of one group of SSBs is 60kHz; the number of SSBs in a half frame is 8; and the first symbol index of each SSB in the half frame is {2, 8, 16, 22, 30, 36, 44, 50}.

[0091] The fourth aspect includes either the first aspect or the second aspect, and also includes that the SCS of one group of SSBs is 120kHz; the number of SSBs in a half frame is 64; and the first symbol index of each SSB in the half frame is {8, 12, 16, 20, 32, 36, 40, 44, 64, 68, 72, 76, 88, 92, 96, 100}+140*n, where n=0, 1, 2 and 3.

[0092] The fifth aspect includes either the first aspect or the second aspect, and also includes that the SCS of a group of SSBs is 120kHz and is combined with an extended cyclic prefix (ECP); the number of SSBs in a half-frame is 64; and the first symbol index of each SSB in the half-frame is {4, 8, 16, 20}+24*n, where n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17 and 18.

[0093] The sixth aspect includes either the first aspect or the second aspect, and also includes that the SCS of one group of SSBs is 120kHz and is combined with an extended cyclic prefix (ECP); the number of SSBs in a half-frame is 64; and the first symbol index of each SSB in the half-frame is {2, 8, 14, 20}+24*n, where n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17 and 18.

[0094] The seventh aspect includes any one of the first to sixth aspects, and also includes that an SCS of 120kHz is supported for public data, and when the SCS of a group of SSBs is detected as 120kHz or 60kHz, the reused current 1 bit in the master information block (MIB) indicates one of two candidate values ​​of the SCS for the public data, wherein the two candidate values ​​include at least 120kHz.

[0095] The eighth aspect includes any one of the first to sixth aspects, and wherein an SCS of 120kHz is supported for public data, and a reused current 1 bit and a reserved 1 bit in a master information block (MIB) indicate one of three or four candidate values, wherein the three or four candidate values ​​include at least 120kHz.

[0096] The ninth aspect includes any one of the first aspect to the eighth aspect, and also includes that a 120kHz SCS is supported for public data, and when an SSB with a 15kHz SCS is detected: a subcarrier offset from subcarrier 0 in a common resource block to subcarrier 0 of an SSB includes seven bits, wherein four of the seven bits are from a frequency offset value in a master information block (MIB), and three of the seven bits are from: the last three bits of a payload of a physical broadcast channel (PBCH) added by a physical layer of a network device Or the last three bits , and spare bits in the payload added by higher layers of the network device.

[0097] The tenth aspect includes any one of the first to eighth aspects, and also includes wherein an SCS of 120 kHz is supported for public data, and when an SSB with a 30 kHz SCS is detected, or an SCS of 60 kHz is supported for public data, and when an SSB with a 15 kHz SCS is detected: a subcarrier offset from subcarrier 0 in a common resource block to subcarrier 0 of an SSB includes six bits, wherein four of the six bits come from a frequency offset value in a master information block (MIB), and two of the six bits come from the last three bits of a payload of a physical broadcast channel (PBCH) added by a physical layer of a network device. The last two bits, or the last three bits A bit in the , and spare bits in the payload added by higher layers of the network device.

[0098] An eleventh aspect includes a wireless communication device, the wireless communication device comprising a processor and a memory, wherein the processor is configured to read a code from the memory to implement any one of the first to tenth aspects.

[0099] A twelfth aspect includes a computer program product comprising a computer-readable program medium including code stored thereon, which, when executed by a processor, causes the processor to implement any one of the first to tenth aspects.

[0100] In addition to the features mentioned in each independent aspect listed above, some examples may show, alone or in combination, optional features mentioned in the dependent aspects and / or disclosed in the above description and shown in the drawings.

Claims

1. A method for wireless communication, the method comprising: searching, by the user equipment, for cells at a carrier frequency within a frequency range 1 (FR1); and A set of synchronization signals and physical broadcast channel blocks (SSBs) are detected by the user equipment in the carrier frequency with a subcarrier spacing (SCS) of 60 kilohertz (kHz) or 120 kHz.

2. A method for wireless communication, the method comprising: Determining by the network device to communicate in the cell at a carrier frequency within a frequency range 1 (FR1); and A set of synchronization signals and physical broadcast channel blocks (SSBs) are transmitted by the network equipment at a carrier frequency within FR1 with a subcarrier spacing (SCS) of 60 kilohertz (kHz) or 120 kHz.

3. The method according to any one of claims 1 or 2, wherein: The SCS of the group of SSBs is 60kHz; the number of SSBs in the half frame is 8; and the first symbol index of each SSB in the half frame is {2, 8, 16, 22, 30, 36, 44, 50}.

4. The method according to any one of claims 1 or 2, wherein: The SCS of the group of SSBs is 120kHz; the number of SSBs in the half frame is 64; and the first symbol index of each SSB in the half frame is {8, 12, 16, 20, 32, 36, 40, 44, 64, 68, 72, 76, 88, 92, 96, 100} + 140*n, where n = 0, 1, 2 and 3.

5. The method according to any one of claims 1 or 2, wherein: The SCS of the group of SSBs is 120kHz and is combined with an extended cyclic prefix (ECP); the number of SSBs in the half-frame is 64; and the first symbol index of each SSB in the half-frame is {4, 8, 16, 20}+24*n, where n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17 and 18.

6. The method according to any one of claims 1 or 2, wherein: The SCS of the group of SSBs is 120kHz and is combined with an extended cyclic prefix (ECP); the number of SSBs in the half-frame is 64; and the first symbol index of each SSB in the half-frame is {2, 8, 14, 20}+24*n, where n=0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17 and 18.

7. The method according to any one of claims 1 or 2, wherein: An SCS of 120kHz is supported for public data, and when the SCS of the set of SSBs is detected as 120kHz or 60kHz, the current 1 bit reused in the master information block (MIB) indicates one of two candidate values ​​of the SCS for the public data, wherein the two candidate values ​​include at least 120kHz.

8. The method according to any one of claims 1 or 2, wherein: The SCS of 120 kHz is supported for common data, and the current 1 bit reused and the reserved 1 bit in the master information block (MIB) indicate one of three or four candidate values, wherein the three or four candidate values ​​include at least 120 kHz.

9. The method according to any one of claims 1 or 2, wherein: SCS of 120kHz is supported for public data, and when SSB with 15kHz SCS is detected: The subcarrier offset from subcarrier 0 in the common resource block to subcarrier 0 of the SSB includes seven bits, where four of the seven bits come from a frequency offset value in a master information block (MIB) and three of the seven bits come from: The last three bits of the physical broadcast channel (PBCH) payload added by the physical layer of the network device a A+5 、a A+6 、a A+7 ;or The last three bits a A+5 、a A+6 、a A+7 and two bits in the payload added by higher layers of the network device.

10. The method according to any one of claims 1 or 2, wherein: SCS of 120kHz is supported for public data, and when SSB with 30kHz SCS is detected, or SCS of 60kHz is supported for public data, and when SSB with 15kHz SCS is detected: The subcarrier offset from subcarrier 0 in the common resource block to subcarrier 0 of the SSB includes six bits, where four of the six bits come from the frequency offset value in the master information block (MIB) and two of the six bits come from: The last three bits of the physical broadcast channel (PBCH) payload added by the physical layer of the network device a A+5 、a A+6 、a A+7 two bits in ; or The last three bits a A+5 、a A+6 、a A+7 A bit in the , and a spare bit in the payload added by higher layers of the network device.

11. A wireless communication device, comprising a processor and a memory, wherein the processor is configured to read a code from the memory to implement the method according to any one of claims 1 to 10.

12. A computer program product comprising a computer-readable program medium, the computer-readable program medium comprising code stored thereon, the code, when executed by a processor, causing the processor to implement the method according to any one of claims 1 to 10.

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