Information determination method and device, information transmission method and device, equipment and storage medium

Abstract

The invention provides an information determination method and device, an information transmission method and device, equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: determining information used by terminal equipment in an initial access process based on a first frequency range; according to the technical scheme provided by the embodiment of the invention, the information transmission in the PBCH on the high-frequency band is designed, and in the initial access process, the network equipment sends the information such as the SSB and the SIB1 to the terminal equipment based on the high-frequency band, so that the terminal equipment determines the information used in the initial access process based on the high-frequency band and the received SSB and PBCH; therefore, the terminal equipment subsequently uses the information to access the cell where the network equipment is located, and information interaction and data transmission between the terminal equipment and the network equipment are realized through a high-frequency band.

Description

[0001] This application is a divisional application of the invention patent application with application number 202080108159.9 filed on December 30, 2020, and invention name “Information determination method, information transmission method, device, equipment and storage medium”. Technical Field

[0002] The embodiments of the present application relate to the field of communication technology, and in particular to an information determination method, an information transmission method, an apparatus, a device, and a storage medium. Background Art

[0003] The research of NR (New Radio) system currently mainly considers two frequency ranges: FR1 (Frequency Range 1) and FR2 (Frequency Range 2). Among them, the frequency included in FR1 is smaller than the frequency included in FR2.

[0004] With the evolution of the NR system, technologies in new frequency ranges (referred to as "high frequency" in the embodiments of the present application) have also begun to be studied. When the NR system is deployed at high frequency, the high frequency includes both unlicensed spectrum (shared spectrum) and authorized spectrum (unshared spectrum). SSB (Synchronization Signal / PBCH (Physical Broadcast Channel) Block) transmission on the authorized spectrum may not require multiple candidate positions; and SSB transmission on the unlicensed spectrum may require multiple candidate positions, so that the network device can perform SSB transmission through at least one of the multiple candidate positions after LBT (Listen Before Talk) is successful. In addition, SSB transmission or SIB1 (System Information Block 1) transmission in high frequency may introduce new subcarrier spacing (Subcarrier Spacing, SCS), or more SSBs may be introduced in high frequency, such as 128 SSBs.

[0005] Therefore, in high frequencies, how to determine the meaning of the information transmitted in the PBCH, or how to determine the information used in the initial access process, requires further discussion and research. Summary of the invention

[0006] The embodiments of the present application provide an information determination method, an information transmission method, an apparatus, a device and a storage medium. The technical solution is as follows:

[0007] In one aspect, an embodiment of the present application provides a method for determining information, the method comprising:

[0008] Based on the first frequency range, information used by the terminal device during an initial access process is determined.

[0009] On the other hand, an embodiment of the present application provides an information transmission method, the method comprising:

[0010] A first synchronization signal block SSB is sent to a terminal device via a first frequency band, wherein the first frequency band belongs to a first frequency range.

[0011] On the other hand, an embodiment of the present application provides an information determination device, the device comprising:

[0012] An information determination module is used to determine the information used by the terminal device during the initial access process based on the first frequency range.

[0013] In another aspect, an embodiment of the present application provides an information transmission device, the device comprising:

[0014] The first sending module is used to send a first synchronization signal block SSB to the terminal device through a first frequency band, and the first frequency band belongs to a first frequency range.

[0015] In another aspect, an embodiment of the present application provides a terminal device, the terminal device comprising: a processor, and a transceiver connected to the processor; wherein:

[0016] The processor is used to determine the information used by the terminal device during the initial access process based on the first frequency range.

[0017] In another aspect, an embodiment of the present application provides a network device, the network device comprising: a processor, and a transceiver connected to the processor; wherein:

[0018] The transceiver is used to send a first synchronization signal block SSB to a terminal device via a first frequency band, and the first frequency band belongs to a first frequency range.

[0019] On the other hand, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a terminal device to implement the above-mentioned information determination method.

[0020] On the other hand, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a network device to implement the above-mentioned information transmission method.

[0021] On the other hand, an embodiment of the present application provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a terminal device, it is used to implement the above-mentioned information determination method.

[0022] On the other hand, an embodiment of the present application provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a network device, it is used to implement the above-mentioned information transmission method.

[0023] On the other hand, an embodiment of the present application provides a computer program product, which is used to implement the above-mentioned information determination method when the computer program product is run on a terminal device.

[0024] On the other hand, an embodiment of the present application provides a computer program product, which is used to implement the above-mentioned information transmission method when the computer program product is run on a network device.

[0025] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0026] By designing the information transmission in PBCH on the high-frequency band, during the initial access process, the network device sends SSB, SIB1 and other information to the terminal device based on the high-frequency band, so that the terminal device determines the information used in the initial access process based on the high-frequency band, the received SSB and PBCH, such as determining the subcarrier spacing corresponding to SSB transmission, the subcarrier spacing corresponding to SIB1 transmission, subcarrier offset indication information, QCL assumption indication information, etc., so that the terminal device can subsequently use this information to access the cell where the network device is located, and realize information interaction and data transmission with the network device through the high-frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of a system architecture provided by an embodiment of the present application;

[0029] Figure 2 k is provided by an embodiment of the present application SSB Schematic diagram of the instructions;

[0030] Figure 3 is another embodiment of the present application. SSB Schematic diagram of the instructions;

[0031] Figure 4 is a flow chart of an information determination method provided by an embodiment of the present application;

[0032] Figure 5 This is another embodiment of the present application. SSB Schematic diagram of the instructions;

[0033] Figure 6 This is another embodiment of the present application. SSB Schematic diagram of the instructions;

[0034] Figure 7 This application also provides another embodiment of k SSB Schematic diagram of the instructions;

[0035] Figure 8 This application also provides another embodiment of k SSB Schematic diagram of the instructions;

[0036] Fig. 9 is a block diagram of an information determination device provided by an embodiment of the present application;

[0037] Fig.10 is a block diagram of an information transmission device provided by an embodiment of the present application;

[0038] Fig.11 is a block diagram of an information transmission device provided by another embodiment of the present application;

[0039] Fig.12 is a block diagram of a terminal device provided by an embodiment of the present application;

[0040] Fig.13 This is a block diagram of a network device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0042] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0043] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0044] Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0045] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0046] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0047] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0048] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0049] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0050] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0051] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0052] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0053] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0054] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0055] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0056] The terms used in the implementation mode of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The terms "first", "second", etc. in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0057] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0058] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0059] Optionally, in the embodiment of the present application, "predefined" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0060] Optionally, in an embodiment of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, which is not limited in the present application.

[0061] Please refer to Figure 1 , which shows a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture may include: a terminal device 10 and a network device 20.

[0062] The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 may be distributed in a cell managed by each network device 20. The terminal device 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), etc. For the convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as terminal devices.

[0063] The network device 20 is a device deployed in an access network to provide wireless communication functions for the terminal device 10. The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with network device functions may be different. For example, in a 5G (5th-Generation, fifth-generation mobile communication technology) NR system or NR-U (New Radio-Unlicensed, new wireless of unlicensed carrier) system, it is called gNodeB or gNB. With the evolution of communication technology, the name "network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as network devices.

[0064] The "5G NR system" in the embodiment of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art may understand its meaning. The technical solution described in the embodiment of the present application may be applicable to a 5G NR system or an NR-U system, or to a subsequent evolution system of a 5G NR system or an NR-U system.

[0065] Before introducing the technical solutions of the embodiments of the present application, some terms and related technologies that appear in the embodiments of the present application are first introduced.

[0066] 1. High frequency

[0067] The research on NR system currently mainly considers two frequency ranges: FR1 and FR2. The frequency ranges included in FR1 and FR2 are shown in Table 1 below.

[0068] Table 1 Frequency range definition

[0069] name Frequency range FR1 410MHz (Megahertz) to 7.125GHz FR2 24.25GHz to 52.6GHz

[0070] With the evolution of NR systems, technologies in new frequency ranges (referred to as "high frequency" in the embodiments of this application) have also begun to be studied. The frequency range included in the high frequency is shown in Table 2 below. For ease of description, as shown in Table 2 below, FRX (Frequency Range X) is also used in the embodiments of this application to represent the high frequency. It should be understood that the name should not constitute any limitation. For example, the high frequency can also be expressed as FR3 (Frequency Range 3).

[0071] Table 2 Frequency range of high frequency

[0072] name Frequency range FRX 52.6GHz to 71GHz

[0073] FRX includes both licensed spectrum and unlicensed spectrum. In other words, FRX includes both unshared spectrum and shared spectrum.

[0074] Unlicensed spectrum is a spectrum allocated by relevant organizations that can be used for radio equipment communications. This spectrum is generally considered to be a shared spectrum, that is, as long as communication equipment in different communication systems meets the regulatory requirements set by the relevant organizations on the spectrum, they can use the spectrum without applying for exclusive spectrum authorization from the relevant organizations.

[0075] In order to allow various communication systems that use unlicensed spectrum for wireless communication to coexist in a friendly manner on the spectrum, some organizations have stipulated regulatory requirements that must be met when using unlicensed spectrum. For example, communication equipment follows the principle of "listen before talking", that is, before a communication device sends a signal on a channel of unlicensed spectrum, it needs to first perform channel sensing. Only when the channel sensing result is that the channel is idle, the communication device can send a signal; if the channel sensing result of the communication device on the channel of unlicensed spectrum is that the channel is busy, the communication device cannot send a signal. For another example, in order to ensure fairness, in one transmission, the duration of a communication device using a channel of unlicensed spectrum for signal transmission cannot exceed a certain length of time. For another example, in order to avoid the power of the signal transmitted on the channel of unlicensed spectrum being too large and affecting the transmission of other important signals on the channel, the communication device needs to follow the limit of not exceeding the maximum power spectral density when using the channel of unlicensed spectrum for signal transmission.

[0076] The subcarrier spacing considered by FRX may be larger than the subcarrier spacing of FR2. In one example, the candidate subcarrier spacing includes at least one of the following: 240KHz, 480KHz, 960KHz. Optionally, the parameter set (Numerology) corresponding to the above candidate subcarrier spacing is shown in Table 3 below.

[0077] Table 3 Parameter sets corresponding to candidate subcarrier spacing

[0078] Subcarrier spacing Symbol length NCP length ECP length Symbol with NCP length Slot length 240KHz 4.16μs 0.292μs 1.04μs 4.452μs 62.5μs 480KHz 2.08μs 0.146μs 0.52μs 2.226μs 31.25μs 960KHz 1.04μs 0.073μs 0.26μs 1.113μs 15.625μs

[0079] 2. SSB transmission in NR system

[0080] 1. SSB index indication

[0081] In the NR system, an SSB burst set may include one or more SSBs, where one SSB includes 4 symbols in the time domain. An SSB burst set should be transmitted within one half frame (5ms).

[0082] For FR1, there are a maximum of 8 SSBs in an SSB burst set, and a maximum of 3 bits are required to indicate the indexes of these 8 SSBs. These 3 bits are implicitly carried by the PBCH DMRS (DeModulation Reference Signal) sequence. There are a total of 8 different PBCH DMRS sequences, corresponding to 8 different SSB indexes.

[0083] For FR2, since the frequency included in FR2 is higher than that in FR1, in order to ensure long-distance signal transmission, its beam energy also needs to be more concentrated. Accordingly, the single beam coverage angle will be smaller, and then more beams will be needed to ensure the coverage of the cell. Optionally, up to 64 SSBs can be configured in FR2, and 6 bits are needed to indicate the index of these 64 SSBs. The lower 3 bits of these 6 bits are still carried by the DMRS sequence of the PBCH, and the additional upper 3 bits are directly indicated by the load content of the PBCH.

[0084] 2. Indication of the SSB index actually transmitted in an SSB burst set

[0085] For FR1, the network device indicates the SSB index actually transmitted by using a complete bit map. One bit in the bit map corresponds to one SSB index. If the value of the bit is "1", it means that the network device has sent the SSB. If the value of the bit is "0", it means that the network device has not sent the SSB.

[0086] For FR2, when the network device indicates the SSB index of the transmission through SIB1, exemplarily, when the network device provides the corresponding configuration information through ssb-PositionsInBurst in SIB1, in order to save signaling overhead, the transmission candidate positions of the SSB are grouped, and the groups with actual SSB transmission are indicated based on the group bit map, and the position of the actually transmitted SSB in each group with actual SSB transmission is indicated based on the intra-group bit map, wherein the position of the actually transmitted SSB in each group is the same. Optionally, the 64 SSB candidate positions are divided into 8 groups, each group includes 8 SSBs, then a total of 8 bits are required to indicate the group, and another 8 bit map indicates the position of the SSB transmission in each group, so the method requires a total of 16 indication bits.

[0087] As an example, assuming that the group bitmap (e.g., groupPresence) is "11000000", it means that the SSBs in the 0th group SSB (SSB indexes 0 to 7) and the 1st group SSB (SSB indexes 8 to 15) perform SSB transmission according to the instructions of the intra-group bitmap; assuming that the intra-group bitmap (e.g., inOneGroup) indicates "11001100", it further indicates that there is SSB transmission at the 0th, 1st, 4th, and 5th SSB transmission candidate positions in the 0th group SSB and the 0th, 1st, 4th, and 5th SSB transmission candidate positions in the 1st group SSB. That is, in this example, the SSB indexes transmitted by the network device are SSB0, SSB1, SSB4, SSB5, SSB8, SSB9, SSB12, and SSB13. When the network device indicates the transmitted SSB through the configuration information of the serving cell (for example, the corresponding configuration information is provided by ssb-PositionsInBurst in ServingCellConfigCommon), a complete bit map is used, that is, 64 bits are used to indicate the transmitted SSB index.

[0088] The terminal device should expect the configuration information provided by ssb-PositionsInBurst in ServingCellConfigCommon to be the same as the configuration information provided by ssb-PositionsInBurst in SIB1.

[0089] 3. QCL (Quasi Co Location) relationship of SSB

[0090] One of the main functions of the SSB index is to allow the terminal device to obtain system timing information. In addition, the SSB index has another function, which is to indicate the QCL relationship between SSBs. The QCL relationship between signals is used to describe the similarity of their large-scale parameter characteristics. If there is a QCL relationship between two signals, the large-scale parameters of the two signals can be considered to be similar. For SSB, the SSBs carried by different beams in the 5G NR system constitute an SSB burst set. Different SSB indexes correspond to different SSB time domain position information in the burst set, and also correspond to specific SSB transmission beam information. SSBs with the same SSB index can be considered to have a QCL relationship, and the terminal device can assume that the network device uses the same beam to transmit these SSBs; SSBs corresponding to different SSB indices are not considered to have a QCL relationship, because they may come from different transmission beams of the network device and experience different channel transmission characteristics.

[0091] 3. SSB transmission in NR-U system

[0092] 1. Discover the signal transmission opportunity window

[0093] The NR-U system can be considered as a system deployed on the unlicensed spectrum of FR1. In the NR-U system, the initial access process of the terminal device can be completed by detecting the SSB burst set in the discovery signal transmission opportunity (Discovery Burst) window. In one example, the discovery signal transmission opportunity window appears periodically, and the length of the discovery signal transmission opportunity window can be configured by the network device. For example, for a serving cell, the terminal device can determine the length of the discovery signal transmission opportunity window through the indication information of the network device (e.g., DiscoveryBurst-WindowLength-r16). Optionally, the length of the discovery signal transmission opportunity window indicated by the indication information may be 0.5ms, 1ms, 2ms, 3ms, 4ms, or 5ms. Optionally, if the terminal device is not configured with the length of the discovery signal transmission opportunity window by the network device, for example, the terminal device is not provided with the DiscoveryBurst-WindowLength-r16 indication information, then the terminal device may assume that the length of the discovery signal transmission opportunity window is one and a half frames, i.e., 5ms.

[0094] 2. Candidate SSB Index

[0095] The SSB burst set in the discovery signal transmission opportunity window may include one or more candidate positions for SSB transmission, and each candidate position for transmitting SSB corresponds to a candidate SSB index. When the network device sends SSB in the discovery signal transmission opportunity window, it may make multiple LBT attempts, and after the LBT succeeds, it may perform SSB transmission through at least one of the multiple candidate positions. In different discovery signal transmission opportunity windows, the network device may select a candidate position that obtains the channel use right from the SSB candidate positions in the discovery signal transmission opportunity window according to the LBT result for SSB transmission.

[0096] For FR1, one time slot can include 2 candidate SSB positions, and the index of the SSB sent at the candidate SSB position can be considered as the candidate SSB index. The maximum number of candidate SSB positions that can be included in a half frame (5ms) is related to the subcarrier spacing. Exemplarily, if the subcarrier spacing of the SSB is 15KHz, the maximum number of candidate SSB positions is 10, and in this half frame, the candidate SSB indexes sent at the candidate SSB positions are 0 to 9 in the time domain; if the subcarrier spacing of the SSB is 30KHz, the maximum number of candidate SSB positions is 20, and in this half frame, the candidate SSB indexes sent at the candidate SSB positions are 0 to 19 in the time domain. Among them, the half frame can be the first half frame (first 5ms) or the second half frame (last 5ms) in the wireless frame.

[0097] 3. QCL relationship of SSB in NR-U

[0098] The terminal device can determine the candidate SSB position with the same QCL assumption based on the QCL assumption indication information (referred to as "Q" in the embodiment of the present application), or the terminal device can determine the SSB index based on Q. Among them, Q can be indicated or preset by the network device. Q is used to indicate the maximum number of SSBs that the network device can send within a discovery signal transmission opportunity window, or in other words, Q is used to determine the SSB index. The value of Q can be 1, 2, 4 or 8. Among them, SSB index = (candidate SSB index mod Q), or, SSB index = (DMRS sequence index of PBCH mod Q). For example, if the value of Q is 4, the candidate SSB index of the SSB sent at candidate SSB position 10 is 10, and it can be considered that the SSB index of the SSB sent at the candidate SSB position 10 is (10mod4) = 2.

[0099] Optionally, SSBs with the same SSB index can be considered to have a QCL relationship, and the UE can assume that the network device uses the same beam to transmit these SSBs; SSBs corresponding to different SSB indices are not considered to have a QCL relationship because they may come from different transmission beams of the network device and experience different channel transmission characteristics.

[0100] 4. Find the SSB index indication actually transmitted in the signal transmission opportunity window

[0101] The terminal device can determine the SSB actually sent through the indication information of the network device (such as ssb-PositionsInBurst). The indication information corresponds to a bitmap, in which the first bit in the bitmap corresponds to SSB index 0, the second bit in the bitmap corresponds to SSB index 1, and so on. In an example, if the bit is 0, it is used to indicate that the SSB corresponding to the bit is not transmitted, and if the bit is 1, it is used to indicate that the SSB corresponding to the bit is transmitted. Optionally, the length of the bitmap corresponding to the indication information (such as ssb-PositionsInBurst) is 8. Optionally, the terminal device may assume that the bit position greater than Q in the bitmap is 0.

[0102] For example, assuming that the bitmap corresponding to ssb-PositionsInBurst on a serving cell is [10100000], and the value of Q is 4, then the SSB indexes sent on the serving cell are SSB0 and SSB2.

[0103] If the subcarrier spacing of SSB is 30KHz, the length of the discovery signal transmission opportunity window is 5ms, and the candidate SSB indexes corresponding to the candidate SSB positions included in the discovery signal transmission opportunity window are 0 to 19, then the candidate SSB indexes corresponding to the candidate SSB positions that can be used for SSB transmission are 0, 2, 4, 6, 8, 10, 12, 14, 16, and 18 respectively. The network device can select the candidate SSB position actually used for SSB transmission from the candidate SSB position according to the LBT result. Among them, the SSB index of the SSB transmitted at the candidate SSB position corresponding to the candidate SSB index of 0, 4, 8, 12, and 16 is 0, that is, these SSBs have a QCL relationship; the SSB index of the SSB transmitted at the candidate SSB position corresponding to the candidate SSB index of 2, 6, 10, 14, and 18 is 2, that is, these SSBs have a QCL relationship; and the candidate SSB positions corresponding to the candidate SSB index of 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19 are not used to transmit SSBs.

[0104] If the subcarrier spacing of the SSB is 15KHz, the signal transmission opportunity window length is 5ms, and the candidate SSB indexes corresponding to the candidate SSB positions included in the signal transmission opportunity window are 0 to 9, then the candidate SSB indexes corresponding to the candidate SSB positions that can be used for SSB transmission are 0, 2, 4, 6, and 8 respectively. The network device can select the candidate SSB position actually used for SSB transmission from the candidate SSB position according to the LBT result. Among them, the SSB index of the SSB transmitted at the candidate SSB position corresponding to the candidate SSB index of 0, 4, and 8 is 0, that is, these SSBs have a QCL relationship; the SSB index of the SSB transmitted at the candidate SSB position corresponding to the candidate SSB index of 2 and 6 is 2, that is, these SSBs have a QCL relationship; and the candidate SSB positions corresponding to the candidate SSB index of 1, 3, 5, 7, and 9 are not used to transmit SSBs.

[0105] The terminal device should expect the configuration information provided by ssb-PositionsInBurst in ServingCellConfigCommon to be the same as the configuration information provided by ssb-PositionsInBurst in SIB1.

[0106] 4. Information carried by PBCH

[0107] 1. Information carried by PBCH in NR system

[0108] In the NR system, the information carried by PBCH includes MIB (Master Information Block) information, MIB message type indication information and PBCH information. Among them, the information included in MIB is shown in Table 4 below, a total of 23 bits, plus 1 bit of MIB message type indication, that is, the message generated by the high layer includes A = 24 bits. The A bit information is the first A bit information carried in PBCH, recorded as a0, a1, ..., a A-1 .

[0109] Table 4 MIB information

[0110] MIB Information Number of bits System Frame Number (SFN) 6 Common subcarrier spacing (subCarrierSpacingCommon) 1 <![CDATA[SSB subcarrier offset (k SSB )]]> 4 Type A DMRS location 1 SIB1 PDCCH (Physical Downlink Control Channel) configuration 8 Cell Barred 1 IntraFreqReselection 1 Spare bits 1 total 23

[0111] In addition, the physical layer will generate an additional 8 bits of PBCH information, denoted as a A , a A+1 , …, a A+7 That is to say, excluding the cyclic redundancy check (CRC), the PBCH includes a total of 32 information bits. A 、a A+1 、a A+2 、a A+3 They are used to represent the 4th, 3rd, 2nd and 1st least significant bits (LSB) of SFN respectively; a A+4 is the half-frame indication information, which is used to indicate whether the SSB burst set corresponds to the first half frame or the second half frame. For the authorized spectrum of FR1, a A+5 Used to indicate k SSB The most significant bit (MSB) of a A+6 and a A+7 is a reserved bit; for FR2, a A+5 、a A+6 、a A+7 They are used to represent the 6th, 5th and 4th bits of the SSB index respectively.

[0112] 2. Information carried by PBCH in NR-U system

[0113] The number of information bits included in the PBCH in the NR-U system is the same as the number of information bits included in the PBCH in the NR system, but the definitions of some of the bits are different. The specific differences are as follows.

[0114] It should be understood that the subcarrier spacing corresponding to SIB1, message 2 or message 4 (Msg.2 / 4) for initial access, paging and broadcast system messages (SI-messages) is the same. In the NR system, the above subcarrier spacing is indicated by the common subcarrier spacing. However, in the NR-U system, the subcarrier spacing of SSB is the same as the subcarrier spacing of SIB1 (as well as message 2 or message 4 for initial access, paging and broadcast system messages), so the common subcarrier spacing is not used to indicate the subcarrier spacing of SIB1.

[0115] (1) When k SSB When the indicated value is less than 24, the low-order bits of the common subcarrier spacing and the 4-bit SSB subcarrier offset in the MIB message are used to jointly indicate the QCL assumption indication information Q, as shown in Table 5 below.

[0116] Table 5. QCL assumption indication information Q

[0117]

[0118]

[0119] (2) When the subcarrier spacing of SSB is 30KHz, a A+5 Used to indicate k SSB The high bit MSB of a A+6 、a A+7 Used to represent the 5th and 4th bits of the SSB index respectively.

[0120] (3) When the subcarrier spacing of SSB is 15KHz, a A+5 Used to indicate k SSB The high bit MSB of a A+7 Used to indicate the high-order bit MSB of the SSB index; a A+6 Reserved bits.

[0121] 3. k SSB

[0122] k SSB To indicate N SSB-CRB The number of subcarriers offset between subcarrier 0 in the SSB and subcarrier 0 in the SSB. For the licensed spectrum of FR1, k SSB Contains 5 bits, k SSB The 4 LSB bits in k are indicated by the SSB subcarrier offset in the MIB. SSB The MSB in the PBCH information is a A+5 For FR2, k SSB Contains 4 bits, which are indicated by the SSB subcarrier offset in the MIB. For FR1 unlicensed spectrum, when kSSB When the indicated value is less than 24, k SSB The LSB in is also used to indicate QCL assumption indication information Q.

[0123] N SSB-CRB is obtained based on the high-level parameter offsetToPointA. For the first SSB (for example, any one carrying k SSB SSB), the terminal device shall assume that N SSB-CRB The center of subcarrier 0 of the first CRB (Common Resource Block) coincides with the center of subcarrier 0 of the first CRB (Common Resource Block). The subcarrier spacing of the first CRB is the same as the subcarrier spacing of SIB1, and the subcarrier 0 of the first RB (Resource Block) of the first CRB and the first SSB overlaps.

[0124] For the case where the subcarrier spacing of SSB is 15KHz or 30KHz, for example, for SSB on FR1, k SSB and N SSB-CRB The corresponding subcarrier spacing is 15KHz.

[0125] For the case where the subcarrier spacing of SSB is 120KHz or 240KHz, for example, for SSB on FR2, k SSB The corresponding subcarrier spacing is the same as that of SIB1, N SSB-CRB The corresponding subcarrier spacing is 60KHz.

[0126] Please refer to Figure 2 , which exemplarily shows that the subcarrier spacing of SSB is 30KHz and the subcarrier spacing of SIB1 is 30KHz SSB Schematic diagram of the indication, where k SSB The subcarrier spacing corresponding to the indicated offset subcarrier number is 15KHz (i.e., k SSB The corresponding subcarrier spacing is 15KHz). Please refer to Figure 3 , which exemplarily shows that the subcarrier spacing of SSB is 120KHz and the subcarrier spacing of SIB1 is 120KHz SSB Schematic diagram of the indication, where k SSB The subcarrier spacing corresponding to the indicated number of offset subcarriers is the subcarrier spacing of SIB1.

[0127] 4. Common subcarrier spacing indication information

[0128] The common subcarrier spacing indication information is used to indicate the subcarrier spacing corresponding to SIB1, message 2 or message 4 (Msg.2 / 4) for initial access, paging and broadcast system messages (SI-messages). Message 2 is message 2 in the random access process, and message 4 is message 4 in the random access process.

[0129] The common subcarrier spacing indication information may indicate scs15or60, or scs30or120.

[0130] For FR2, the supported combinations of SSB subcarrier spacing and SIB1 subcarrier spacing are as follows:

[0131] SSB 120KHz+SIB1 60KHz / 120KHz;

[0132] SSB 240KHz+SIB1 60KHz / 120KHz.

[0133] If the terminal device obtains the MIB on the carrier of FR1, the scs15or60 in the MIB corresponds to 15KHz, and the scs30or120 corresponds to 30KHz; if the terminal device obtains the MIB on the carrier of FR2, the scs15or60 in the MIB corresponds to 60KHz, and the scs30or120 corresponds to 120KHz.

[0134] Please refer to Figure 4 , which shows a flowchart of an information determination method provided by an embodiment of the present application, which can be applied to Figure 1 In the terminal device 10 in the system architecture shown. The method includes at least part of the following contents.

[0135] Step 410: Determine information used by the terminal device during an initial access process based on the first frequency range.

[0136] When a communication system (such as an NR system) is deployed in a first frequency range, the network equipment and the terminal equipment in the communication system perform information exchange and data transmission based on the first frequency range. Before performing information exchange and data transmission, the terminal equipment needs to access the cell or network where the network equipment is located. Optionally, the process of the terminal equipment accessing the network where the network equipment is located can be called an initial access process. In an embodiment of the present application, the terminal equipment needs to determine the information used in the initial access process based on the first frequency range. Optionally, the information used by the terminal equipment in the initial access process includes various parameters used in the initial access process, such as at least one of the subcarrier spacing corresponding to SSB transmission, the subcarrier spacing corresponding to SIB1 transmission, QCL assumption indication information, and subcarrier offset indication information. For an introduction to the information used by the terminal equipment during the initial access process, please refer to the following embodiments, which will not be elaborated here.

[0137] It can be seen from the above introduction that the related technology mainly studies two frequency ranges: FR1 and FR2. Among them, the frequency range of FR1 is 410MHz to 7.125GHz, and the frequency range of FR2 is 24.25GHz to 52.6GHz. The embodiment of the present application mainly studies the first frequency range. Optionally, the frequency in the first frequency range is greater than 52.6GHz and / or equal to 52.6GHz, that is, the frequency range studied by the embodiment of the present application is a frequency range with higher frequencies than FR1 and FR2. Optionally, the first frequency range includes 52.6GHz to 71GHz, that is, the first frequency range is the "high frequency", "FRX", etc. described in the above embodiments.

[0138] To summarize, the technical solution provided in the embodiment of the present application is designed for information transmission in PBCH on a high-frequency frequency band. During the initial access process, the network device sends SSB, SIB1 and other information to the terminal device based on the high-frequency frequency band, so that the terminal device determines the information used in the initial access process based on the high-frequency frequency band, the received SSB and PBCH, such as determining the subcarrier spacing corresponding to the SSB transmission, the subcarrier spacing corresponding to the SIB1 transmission, the subcarrier offset indication information, the QCL assumption indication information, etc., so that the terminal device can subsequently use the information to access the cell where the network device is located, and realize information interaction and data transmission with the network device through the high-frequency frequency band.

[0139] The embodiment of the present application is designed for information transmission in the PBCH of the high frequency band, and can enable the terminal device to determine k in the case of different SSB subcarrier spacing and different SIB1 subcarrier spacing combinations. SSB At least one of the following can be ensured: indicating the meaning, determining the subcarrier spacing corresponding to SIB1 transmission, and determining the QCL relationship of SSB, etc., and a unified design of SSB transmission on the unlicensed spectrum and the licensed spectrum included in the high-frequency band can be ensured.

[0140] In one example, the information transmission in the PBCH designed for the high frequency band in the embodiment of the present application is mainly divided into three parts: the subcarrier spacing corresponding to the SSB transmission and the subcarrier spacing corresponding to the SIB1 transmission, the subcarrier offset indication information (k SSB ), QCL assumption indication information (Q). Below, these three parts are introduced and explained respectively.

[0141] First, the subcarrier spacing corresponding to SSB and the subcarrier spacing corresponding to SIB1 are introduced.

[0142] In one example, the information used by the terminal device during the initial access process includes a first subcarrier spacing; wherein the terminal device detects a first SSB on a first frequency band, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission, and the first frequency band belongs to a first frequency range.

[0143] The first frequency range includes at least one frequency band. Assuming that the network device sends the first SSB to the terminal device through the first frequency band in the first frequency range, and the terminal device detects the first SSB on the first frequency band, the subcarrier interval corresponding to the first SSB transmission is the first subcarrier interval.

[0144] Optionally, the first subcarrier spacing is predefined by a communication protocol; and / or, the first subcarrier spacing is determined according to an association relationship. It should be understood that the communication protocol can predefine a specific value of the first subcarrier spacing, such as predefining it as 120KHz, or predefine an association relationship, which is not limited in the embodiments of the present application. Among them, the association relationship includes an association relationship between the subcarrier spacing corresponding to the SSB transmission and the frequency band in the first frequency range.

[0145] For example, assuming that the association relationship between the frequency band in the first frequency range and the subcarrier spacing corresponding to the SSB transmission includes {Band (bandwidth) M1, A1 KHz} or {Band M2, A2 KHz}, if the terminal device detects SSB on Band M1, the terminal device may assume that the subcarrier spacing corresponding to the SSB transmission on the Band M1 is A1 KHz, or the terminal device may detect SSB on the Band M1 according to the subcarrier spacing of A1 KHz; if the terminal device detects SSB on Band M2, the terminal device may assume that the subcarrier spacing corresponding to the SSB transmission on the Band M2 is A2 KHz, or the terminal device may detect SSB on the Band M2 according to the subcarrier spacing of A2 KHz.

[0146] For another example, assuming that the association between the frequency band in the first frequency range and the subcarrier spacing corresponding to the SSB transmission includes {Band M1, A1 / A2 KHz}, if the terminal device detects SSB on Band M1, the terminal device may assume that the subcarrier spacing corresponding to the SSB transmission on the Band M1 is A1 KHz or A2 KHz, or the terminal device may detect SSB on the Band M1 according to the subcarrier spacing of A1 or A2KHz.

[0147] In one example, the information used by the terminal device during the initial access process includes a second subcarrier spacing; wherein the second subcarrier spacing refers to the subcarrier spacing corresponding to the transmission of the first information, the first information is associated with the first SSB, the first SSB is the SSB detected by the terminal device on the first frequency band, and the first frequency band belongs to the first frequency range; the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, a paging message, and a system message.

[0148] It should be understood that the subcarrier intervals corresponding to SIB1, message 2 or message 4 transmitted during the initial access process, paging messages, and system messages are all the same. For the convenience of description in the embodiments of the present application, "SIB1 associated with the first SSB, message 2 or message 4 transmitted during the initial access process, paging messages, and system messages" are collectively referred to as "first information", and the "subcarrier interval corresponding to the first information transmission" is referred to as "second subcarrier interval".

[0149] Optionally, the second subcarrier spacing is predefined by the communication protocol; and / or, the second subcarrier spacing is determined based on at least one of the following information: the first subcarrier spacing, the first frequency band, the first indication information; the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission. It should be understood that the communication protocol can predefine the specific value of the second subcarrier spacing, such as predefining it as 120KHz, and can also predefine the method for determining the second subcarrier spacing, that is, predefine the second subcarrier spacing based on at least one of the above information, and the embodiments of the present application are not limited to this. In the case where the second subcarrier spacing is predefined by the communication protocol, the second subcarrier spacing does not require network equipment indication, and therefore, the common subcarrier spacing indication information in the PBCH in the SSB can be used to indicate other information to achieve the indication and carrying of more information.

[0150] Taking "the second subcarrier spacing is determined based on at least one of the following information: the first subcarrier spacing, the first frequency band, and the first indication information" as an example, in the embodiment of the present application, the terminal device can determine the second subcarrier spacing based on any one of the at least one information or a combination of any multiple information. Several possible determination methods are described below.

[0151] (1) Optionally, the second subcarrier spacing is determined based on the first subcarrier spacing. In this manner, since the second subcarrier spacing does not require network device indication, the common subcarrier spacing indication information can be used to indicate other information.

[0152] For example, the second subcarrier spacing is the same as the first subcarrier spacing. As an example, if the subcarrier spacing of the SSB detected by the terminal device is 120KHz, the subcarrier spacing of the SIB1 corresponding to the SSB is also 120KHz. As another example, if the subcarrier spacing of the SSB detected by the terminal device is 480KHz, the subcarrier spacing of the SIB1 corresponding to the SSB is also 480KHz.

[0153] For another example, there is an association relationship between the second subcarrier spacing and the first subcarrier spacing. Assume that the association relationship between the first subcarrier spacing and the second subcarrier spacing includes {A1 KHz, B1 KHz} or {A2 KHz, B2 KHz}, if the subcarrier spacing of the SSB detected by the terminal device is A1 KHz, then the subcarrier spacing of the SIB1 corresponding to the SSB is B1 KHz; if the subcarrier spacing of the SSB detected by the terminal device is A2 KHz, then the subcarrier spacing of the SIB1 corresponding to the SSB is B2 KHz. As an example, assuming that the association relationship between the first subcarrier spacing and the second subcarrier spacing includes {120KHz, 120KHz} or {240KHz, 480KHz}, if the subcarrier spacing of the SSB detected by the terminal device is 120KHz, then the subcarrier spacing of the SIB1 corresponding to the SSB is 120KHz; if the subcarrier spacing of the SSB detected by the terminal device is 240KHz, then the subcarrier spacing of the SIB1 corresponding to the SSB is 480KHz.

[0154] (2) Optionally, the second subcarrier spacing is determined based on the first frequency band. In this manner, since the second subcarrier spacing does not need to be indicated by the network device, the common subcarrier spacing indication information can be used to indicate other information.

[0155] For example, the association relationship between the first frequency band and the second subcarrier spacing includes {Band M1, B1 KHz} or {Band M2, B2 KHz}. If the terminal device detects SSB on Band M1, the subcarrier spacing of SIB1 corresponding to the SSB is B1 KHz. If the terminal device detects SSB on Band M2, the subcarrier spacing of SIB1 corresponding to the SSB is B2 KHz.

[0156] (3) Optionally, the second subcarrier spacing is determined based on the first subcarrier spacing and the first frequency band. In this manner, since the second subcarrier spacing also does not require network device indication, the common subcarrier spacing indication information can be used to indicate other information.

[0157] For example, the association relationship between the first frequency band and the first subcarrier spacing and the second subcarrier spacing includes {Band M1, A1KHz, B1 KHz} or {Band M2, A2 KHz, B2 KHz}. If the terminal device detects SSB on Band M1, and the subcarrier spacing of the SSB is A1 KHz, the subcarrier spacing of SIB1 corresponding to the SSB is B1 KHz. If the terminal device detects SSB on Band M2, and the subcarrier spacing of the SSB is A2 KHz, the subcarrier spacing of SIB1 corresponding to the SSB is B2 KHz.

[0158] As an example, assume that the association relationship between the first frequency band and the first subcarrier spacing and the second subcarrier spacing includes {Band M1, 120KHz, 120KHz} or {Band M1, 240KHz, 960KHz}. When the terminal device detects SSB on Band M1, if the subcarrier spacing of the SSB is 120KHz, the subcarrier spacing of SIB1 corresponding to the SSB is 120KHz; if the subcarrier spacing of the SSB is 240KHz, the subcarrier spacing of SIB1 corresponding to the SSB is 960KHz.

[0159] As another example, assuming that the association relationship between the first frequency band and the first subcarrier spacing and the second subcarrier spacing includes {Band M1, 120KHz, 120KHz} or {Band M2, 480KHz, 480KHz}, if the terminal device detects SSB on Band M1, the terminal device can determine that the subcarrier spacing of the SSB on Band M1 is 120KHz, and the subcarrier spacing of SIB1 corresponding to the SSB on Band M1 is 120KHz; if the terminal device detects SSB on Band M2, the terminal device can determine that the subcarrier spacing of the SSB on Band M2 is 480KHz, and the subcarrier spacing of SIB1 corresponding to the SSB on Band M2 is 480KHz.

[0160] (4) Optionally, the second subcarrier spacing is determined based on the first indication information. Optionally, the first indication information includes at least one of the following: common subcarrier spacing indication information, other information carried in the PBCH in the first SSB. In this way, by indicating the second subcarrier spacing through the network device, a combination of subcarrier spacing corresponding to multiple SSB transmissions and subcarrier spacing corresponding to SIB1 transmissions can be more flexibly supported during the initial access process.

[0161] For example, the first indication information includes 1 bit of common subcarrier spacing indication information. As an example, 1 bit of common subcarrier spacing indication information is used to indicate that the subcarrier spacing of SIB1 is B1 KHz or B2 KHz. As another example, 1 bit of common subcarrier spacing indication information can indicate scs15or60orB1 or scs30or120orB2. If the terminal device obtains the MIB on the carrier of FR1, the scs15or60orB1 in the MIB corresponds to 15KHz, and the scs30or120orB2 corresponds to 30KHz; if the terminal device obtains the MIB on the carrier of FR2, the scs15or60orB1 in the MIB corresponds to 60KHz, and the scs30or120orB2 corresponds to 120KHz; if the terminal device obtains the MIB on the carrier of FRX, the scs15or60orB1 in the MIB corresponds to B1 KHz, and the scs30or120orB2 corresponds to B2 KHz.

[0162] For another example, the first indication information includes 2 bits, of which 1 bit is the common subcarrier spacing indication information, and the other bit is other information carried in the PBCH in the first SSB. Optionally, the other information includes at least one of the following: TypeADMRS position indication information, SIB1 PDCCH configuration information, subcarrier offset indication information, spare bits, MIB message type indication information, and half-frame indication information. As an example, the first indication information is used to indicate that the subcarrier spacing of SIB1 is B1 KHz, B2 KHz, or B3 KHz.

[0163] (5) Optionally, the second subcarrier spacing is determined based on the first frequency band and the first indication information. In this manner, the second subcarrier spacing is indicated by the network device, and a combination of subcarrier spacings corresponding to multiple SSB transmissions and subcarrier spacings corresponding to SIB1 transmissions can be more flexibly supported during the initial access process.

[0164] For example, the association between the first frequency band and the second subcarrier spacing includes {Band M1, B1 / B2 KHz}. If the terminal device detects SSB on Band M1, the first indication information (such as common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of SIB1 corresponding to the SSB is B1 or B2 KHz.

[0165] As an example, the association relationship between the first frequency band and the second subcarrier spacing includes {Band M1, 120 or 480KHz} and {Band M2, 120 or 960KHz}. If the terminal device detects SSB on Band M1, the first indication information (such as common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of SIB1 corresponding to the SSB is 120 or 480KHz; if the terminal device detects SSB on Band M2, the first indication information (such as common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of SIB1 corresponding to the SSB is 120 or 960KHz.

[0166] (6) Optionally, the second subcarrier spacing is determined based on the first subcarrier spacing and the first indication information. In this manner, the second subcarrier spacing is indicated by the network device, and a combination of subcarrier spacings corresponding to multiple SSB transmissions and subcarrier spacings corresponding to SIB1 transmissions can be more flexibly supported during the initial access process.

[0167] For example, the association relationship between the first subcarrier spacing and the second subcarrier spacing includes {A1 KHz, B1 / B2 KHz}. If the subcarrier spacing of the SSB detected by the terminal device is A1 KHz, the first indication information (such as the common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of SIB1 corresponding to the SSB is B1 or B2 KHz.

[0168] As an example, the association relationship between the first subcarrier spacing and the second subcarrier spacing includes {120KHz, 120 or 480KHz} and {480KHz, 480 or 960KHz}. If the subcarrier spacing of the SSB detected by the terminal device is 120KHz, the first indication information (such as the common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of the SIB1 corresponding to the SSB is 120 or 480KHz; if the subcarrier spacing of the SSB detected by the terminal device is 480KHz, the first indication information (such as the common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of the SIB1 corresponding to the SSB is 480 or 960KHz.

[0169] (7) Optionally, the second subcarrier spacing is determined based on the first indication information, the first subcarrier spacing and the first frequency band. In this manner, the second subcarrier spacing is indicated by the network device, and a combination of subcarrier spacings corresponding to multiple SSB transmissions and subcarrier spacings corresponding to SIB1 transmissions can be more flexibly supported during the initial access process.

[0170] For example, the association between the first frequency band and the first subcarrier spacing and the second subcarrier spacing includes {Band M1, A1KHz, B1 / B2KHz}. If the terminal device detects SSB on Band M1 and the subcarrier spacing of the SSB is A1 KHz, the first indication information (such as common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of SIB1 corresponding to the SSB is B1 or B2 KHz.

[0171] As an example, assuming that the association relationship between the first frequency band and the first subcarrier spacing and the second subcarrier spacing includes {Band M1, 120KHz, 120 / 480KHz} or {Band M1, 240KHz, 480 / 960KHz}, when the terminal device detects SSB on Band M1, if the subcarrier spacing of the SSB is 120KHz, the first indication information (such as common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of SIB1 corresponding to the SSB is 120 or 480KHz; if the subcarrier spacing of the SSB is 240KHz, the first indication information (such as common subcarrier spacing indication information) is used to indicate that the subcarrier spacing of SIB1 corresponding to the SSB is 480 or 960KHz.

[0172] One point that needs to be explained is that, in the absence of conflict, the method for determining the second subcarrier spacing may also be a combination of the above methods. Taking {120 / 480, 120 / 480}KHz including SSB 120KHz+SIB1 120KHz, SSB 480KHz+SIB1 480KHz and SSB 120KHz+SIB1 480KHz as an example, when the subcarrier spacing of SSB detected by the terminal device is 480KHz, the terminal device assumes that the subcarrier spacing of SIB1 is the same as the subcarrier spacing of SSB, which is also 480KHz; when the subcarrier spacing of SSB detected by the terminal device is 120KHz, the terminal device determines that the subcarrier spacing of SIB1 corresponding to the SSB is 120 or 480KHz according to the first indication information (such as the common subcarrier spacing indication information).

[0173] In one example, the first subcarrier spacing includes at least one of the following: 120KHz, 240KHz, 480KHz, 960KHz. In another example, the second subcarrier spacing includes at least one of the following: 120KHz, 240KHz, 480KHz, 960KHz. Based on this, the first subcarrier spacing and the second subcarrier spacing combination {first subcarrier spacing, second subcarrier spacing} that may be supported includes one of the following situations:

[0174] (1) Case 1: {A1, B1} KHz. For example, {120, 120} KHz.

[0175] (2) Case 2: {A1 / A2, B1} KHz. For example, {120 / 240, 120} KHz; another example, {120 / 480, 120} KHz; another example, {120 / 960, 120} KHz.

[0176] (3) Case 3: {A1, B1 / B2} KHz. For example, {120, 120 / 480} KHz; another example, {120, 120 / 960} KHz; another example, {120, 120 / 240} KHz.

[0177] (4) Case 4: {A1 / A2, B1 / B2} KHz. For example, {120 / 480, 120 / 480} KHz; another example, {120 / 480, 120 / 960} KHz; another example, {120 / 960, 120 / 480} KHz; another example, {120 / 960, 120 / 960} KHz; another example, {120 / 240, 120 / 480} KHz; another example, {120 / 240, 120 / 960} KHz; another example, {120 / 240, 120 / 240} KHz.

[0178] (5) Case 5: {A1, B1 / B2 / B3} KHz. For example, {120, 120 / 480 / 960} KHz.

[0179] (6) Case 6: {A1 / A2, B1 / B2 / B3} KHz. For example, {120 / 480, 120 / 480 / 960} KHz; another example, {120 / 960, 120 / 480 / 960} KHz; another example, {120 / 240, 120 / 480 / 960} KHz.

[0180] (7) Case 7: {A1 / A2 / A3, B1 / B2 / B3} KHz. For example, {120 / 480 / 960, 120 / 480 / 960} KHz.

[0181] It should be understood that, taking {A1 / A2, B1 / B2}KHz as an example, the combination of {A1 / A2, B1 / B2}KHz includes at least one of the following: the first subcarrier spacing is A1 KHz and the second subcarrier spacing is B1 KHz, the first subcarrier spacing is A1 KHz and the second subcarrier spacing is B2 KHz, the first subcarrier spacing is A2 KHz and the second subcarrier spacing is B1 KHz, the first subcarrier spacing is A2 KHz and the second subcarrier spacing is B2 KHz. For example, {120 / 480, 120 / 480}KHz includes SSB120KHz+SIB1 120KHz, SSB 480KHz+SIB1 480KHz, SSB 120KHz+SIB1 480KHz and SSB 480kHz+SIB1 120KHz. For another example, {120 / 480, 120 / 480} KHz includes SSB 120 KHz+SIB1 120 KHz and SSB 480 KHz+SIB1 480 KHz.

[0182] Optionally, the network device transmits the SSB according to the discovery signal transmission opportunity window, and the terminal device detects the SSB according to the discovery signal transmission opportunity window. Optionally, the length of the discovery signal transmission opportunity window can be preset or configured by the network device. Optionally, the length of the discovery signal transmission opportunity window is associated with the first subcarrier spacing.

[0183] Next, the subcarrier offset indication information (k SSB ).

[0184] In one example, the information used by the terminal device during the initial access process includes subcarrier offset indication information; wherein the subcarrier offset indication information is carried in the PBCH in the first SSB, the first SSB is the SSB detected by the terminal device on the first frequency band, and the first frequency band belongs to the first frequency range; the subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 of the first RB of the first SSB, the center of subcarrier 0 of the second CRB coincides with the center of subcarrier 0 of the first CRB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

[0185] In the embodiment of the present application, optionally, the second CRB may also be referred to as "N SSB-CRB", for the sake of convenience of description, the technical solution of the embodiment of the present application is introduced by the name of "second CRB". Optionally, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB, and the second CRB and the first CRB are the same CRB. Based on this, the above-mentioned subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the first CRB and subcarrier 0 of the first RB of the first SSB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

[0186] Before further introducing and explaining the technical solution provided in the embodiment of the present application, the following assumptions are made: the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message. It should be understood that the following embodiments are based on the above assumptions.

[0187] Optionally, the ratio of the second subcarrier spacing to the first subcarrier spacing is N2,k SSB Valid indicator values ​​are 0, 1, ..., 12*ceil(N2)-1, where ceil means rounding up. SSB The number of bits included is ceil(log2(12*ceil(N2))), where log2 represents the logarithm with base 2.

[0188] For example, assuming that the ratio of the second subcarrier spacing to the first subcarrier spacing is 2, k SSB Valid indicator values ​​are 0, 1, ..., 23, k SSB The number of bits included is ceil(log2(24))=5 bits.

[0189] For another example, assuming that the ratio of the second subcarrier spacing to the first subcarrier spacing is 1, k SSB Valid indicator values ​​are 0, 1, ..., 11, k SSB The number of bits included is ceil(log2(12))=4 bits.

[0190] For another example, assuming that the ratio of the second subcarrier spacing to the first subcarrier spacing is 0.5, k SSB Valid indicator values ​​are 0, 1, ..., 11, k SSB The number of bits included is ceil(log2(12))=4 bits.

[0191] Optionally, when k SSB When including 4 bits, k SSB is indicated by the SSB subcarrier offset in the MIB; when k SSBWhen the number of bits included is greater than 4 bits, k SSB The included additional 1 bit is indicated by the information bits carried by the PBCH, wherein the information bits carried by the PBCH include information in the MIB, an indication of the MIB message type, and PBCH information bits.

[0192] In the embodiment of the present application, with respect to the size relationship between the first subcarrier spacing and the second subcarrier spacing, k can be selectively SSB Different restrictions are imposed on the valid indication values. Based on this, the number of subcarriers of the offset indicated by the subcarrier offset indication information includes one of the following situations.

[0193] (1) Optionally, when the first subcarrier spacing and the second subcarrier spacing are the same, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}.

[0194] (2) Optionally, when the first subcarrier spacing is greater than the second subcarrier spacing and the ratio of the first subcarrier spacing to the second subcarrier spacing is N1, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, N1, 2*N1, …, (M1-1)*N1}, where M1*N1=m*12, m is the smallest positive integer satisfying M1*N1=m*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}.

[0195] For example, k SSB The number of subcarriers indicated by the offset is m1*N1, the first subcarrier spacing is 480KHz, the second subcarrier spacing is 120KHz, then N1=480 / 120=4, M1*4=1*12, M1=3, then m1=0, 1, 2, k SSB The number of subcarriers indicated by the offset is 0, 4, or 8.

[0196] For example, k SSB The number of subcarriers indicated by the offset is m1*N1, the first subcarrier spacing is 960KHz, the second subcarrier spacing is 120KHz, then N1=960 / 120=8, M1*8=2*12, M1=3, then m1=0, 1, 2, k SSB The number of subcarriers indicated by the offset is 0, 4, or 8.

[0197] For example, k SSBThe number of subcarriers indicated by the offset is m1*N1, the first subcarrier spacing is 240KHz, the second subcarrier spacing is 120KHz, then N1=240 / 120=2, M1*2=1*12, M1=6, then m1=0, 1, 2, 3, 4, 5, k SSB The number of subcarriers indicated by the offset is 0, 2, 4, 6, 8, or 10.

[0198] (3) Optionally, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, …, 12*N2-1}; {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}.

[0199] (4) Optionally, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the subcarrier index range within an RB corresponding to subcarrier 0 of the first RB of the first SSB includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, N2, 2*N2, …, (M2-1)*N2}, where M2*N2=n*12, n is the smallest positive integer that satisfies M2*N2=n*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}.

[0200] For example, the position of subcarrier 0 of the first RB of the first SSB can be m2*N2, the first subcarrier spacing is 120KHz, and the second subcarrier spacing is 480KHz, then N2=480 / 120=4, M2*4=1*12, M2=3, then m2=0, 1, 2, and the position of subcarrier 0 of the first RB of the first SSB can be 0, 4, or 8.

[0201] For another example, the position of subcarrier 0 of the first RB of the first SSB can be m2*N2, the first subcarrier interval is 120KHz, and the second subcarrier interval is 960KHz, then N2=960 / 120=8, M2*8=2*12, M2=3, then m2=0, 1, 2, and the position of subcarrier 0 of the first RB of the first SSB can be 0, 4, or 8.

[0202] For another example, the position of subcarrier 0 of the first RB of the first SSB can be m2*N2, the first subcarrier interval is 120KHz, and the second subcarrier interval is 240KHz, then N2=240 / 120=2, M2*2=1*12, M2=6, then m2=0, 1, 2, 3, 4, 5, and the position of subcarrier 0 of the first RB of the first SSB can be 0, 2, 4, 6, 8, or 10.

[0203] The embodiments of the present application do not limit the method for determining the subcarrier spacing corresponding to the subcarrier offset indication information, the subcarrier spacing corresponding to the first CRB, and the subcarrier spacing corresponding to the second CRB.

[0204] Optionally, the subcarrier spacing corresponding to the subcarrier offset indication information is predefined by the communication protocol; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the second subcarrier spacing; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the subcarrier spacing corresponding to the first CRB; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the subcarrier spacing corresponding to the second CRB.

[0205] Optionally, the subcarrier spacing corresponding to the first CRB is predefined by the communication protocol; or, the subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the first CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the first CRB is equal to the second subcarrier spacing; or, the subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the second CRB.

[0206] Optionally, the subcarrier spacing corresponding to the second CRB is predefined by the communication protocol; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the second CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is equal to the second subcarrier spacing.

[0207] In the embodiment of the present application, the specific determination method of the subcarrier spacing corresponding to the subcarrier offset indication information, and / or the specific determination method of the subcarrier spacing corresponding to the first CRB, may be the same as the specific determination method of the subcarrier spacing corresponding to the second CRB. In the following embodiments, only the specific determination method of the subcarrier spacing corresponding to the second CRB is used as an example for description. It should be understood that after understanding the specific determination method of the subcarrier spacing corresponding to the second CRB, those skilled in the art will easily think of the specific determination method of the subcarrier spacing corresponding to the subcarrier offset indication information, and / or the specific determination method of the subcarrier spacing corresponding to the first CRB.

[0208] In the case where the subcarrier spacing corresponding to the second CRB is predefined by the communication protocol, optionally, the subcarrier spacing corresponding to the second CRB can be predefined as a specific value, such as 120KHz, or a method for determining it can be predefined. Optionally, the predefined method for determining the second CRB includes one of the following situations.

[0209] (1) Optionally, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing that is less than or equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the smallest first subcarrier spacing among all supported first subcarrier spacings.

[0210] (2) Optionally, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing that is less than or equal to the second subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the smallest second subcarrier spacing among all supported second subcarrier spacings.

[0211] (3) Optionally, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing that is greater than or equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the largest first subcarrier spacing among all supported first subcarrier spacings.

[0212] (4) Optionally, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing greater than or equal to the second subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the largest second subcarrier spacing among all supported second subcarrier spacings.

[0213] (5) Optionally, the subcarrier spacing corresponding to the second CRB is predefined as the minimum subcarrier spacing among all supported first subcarrier spacings and second subcarrier spacings; or, the subcarrier spacing corresponding to the second CRB is predefined as the maximum subcarrier spacing among all supported first subcarrier spacings and second subcarrier spacings.

[0214] In an embodiment of the present application, different determination methods of the subcarrier spacing corresponding to the second CRB can also be predefined according to the size relationship between the first subcarrier spacing and the second subcarrier spacing. Based on this, optionally, the determination method of the subcarrier spacing corresponding to the second CRB includes one of the following situations.

[0215] (1) Optionally, for the case where the first subcarrier spacing is equal to the second subcarrier spacing, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing that is less than or equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the smallest first subcarrier spacing among all supported first subcarrier spacings; or, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing that is less than or equal to the second subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the smallest second subcarrier spacing among all supported second subcarrier spacings. For example, the subcarrier spacing corresponding to the second CRB is predefined as 120KHz.

[0216] (2) Optionally, in the case where the first subcarrier spacing is greater than the second subcarrier spacing, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing less than or equal to the second subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the smallest second subcarrier spacing among all supported second subcarrier spacings. For example, the subcarrier spacing corresponding to the second CRB is predefined as 120KHz.

[0217] (3) Optionally, in the case where the first subcarrier spacing is smaller than the second subcarrier spacing, the subcarrier spacing corresponding to the second CRB is predefined as a subcarrier spacing greater than or equal to the second subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is predefined as the largest second subcarrier spacing among all supported second subcarrier spacings. For example, the subcarrier spacing corresponding to the second CRB is predefined as 480KHz.

[0218] Based on the above embodiments, the present application provides several exemplary k SSB Schematic diagram of indicated values.

[0219] (1) For the case where the first subcarrier spacing is equal to the second subcarrier spacing.

[0220] As an example and not a limitation, in the case of SSB 480KHz + SIB1 480KHz, please refer to Figure 5 , the subcarrier spacing corresponding to the second CRB is predefined as 120KHz. SSB The corresponding subcarrier spacing is the same as the second subcarrier spacing. SSB The indication value is 8, indicating that the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 in the first RB of the SSB is 8.

[0221] (2) For the case where the first subcarrier spacing is greater than the second subcarrier spacing.

[0222] As an example and not a limitation, in the case of SSB 480KHz + SIB1 120KHz, please refer to Figure 6 , the subcarrier spacing corresponding to the second CRB is predefined as 120KHz. SSB The corresponding subcarrier spacing is the same as the second subcarrier spacing. SSB The indication value is 8, indicating that the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 in the first RB of the SSB is 8.

[0223] (3) For the case where the first subcarrier spacing is smaller than the second subcarrier spacing.

[0224] As an example and not a limitation, in the case of SSB 120KHz + SIB1 480KHz, please refer to Figure 7 , k SSB The indicator value is 8, indicating that the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 in the first RB of the SSB is 8. Among them, the subcarrier spacing corresponding to the second CRB is the same as the second subcarrier spacing, k SSB The corresponding subcarrier spacing is the same as the second subcarrier spacing. In addition, in this example, the location where the SSB can be placed is limited. For example, subcarrier 0 of the first RB of the SSB can only be located on subcarrier 0, 4, or 8 in one RB.

[0225] (4) For the case where the first subcarrier spacing is smaller than the second subcarrier spacing.

[0226] As an example and not a limitation, in the case of SSB 120KHz + SIB1 480KHz, please refer to Figure 8 , the subcarrier spacing corresponding to the second CRB is predefined as 120KHz. SSB The corresponding subcarrier spacing is the same as the second subcarrier spacing. SSB The indicator value is 8, indicating that the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 of the first RB of the SSB is 8. In addition, in this example, the location where the SSB can be placed is limited. For example, subcarrier 0 of the first RB of the SSB can only be located on subcarrier 0, 4, or 8 in one RB.

[0227] Regarding the size relationship between the first subcarrier spacing and the second subcarrier spacing involved in the above embodiments, the embodiments of the present application show the following {first subcarrier spacing, second subcarrier spacing} combinations.

[0228] (1) Case 1: The first subcarrier spacing is equal to the second subcarrier spacing. As an example, the combination of the first subcarrier spacing and the second subcarrier spacing includes at least one of the following: {120, 120} KHz; {480, 480} KHz; {960, 960} KHz; {240, 240} KHz.

[0229] (2) Case 2: The first subcarrier spacing is greater than the second subcarrier spacing. As an example, the case where the first subcarrier spacing is greater than the second subcarrier spacing includes at least one of the following: {240, 120} KHz; {480, 120} KHz; {960, 120} KHz; {480, 240} KHz; {960, 240} KHz; {960, 480} KHz.

[0230] (3) Case 3: The first subcarrier spacing is smaller than the second subcarrier spacing. As an example, the case where the first subcarrier spacing is smaller than the second subcarrier spacing includes at least one of the following: {120, 480} KHz; {120, 960} KHz; {120, 240} KHz; {240, 480} KHz; {240, 960} KHz; {480, 960} KHz.

[0231] Next, the QCL assumption indication information (Q) is introduced.

[0232] In one example, the information used by the terminal device during the initial access process includes QCL assumption indication information. The QCL assumption indication information is used to indicate the QCL relationship between SSB candidate positions.

[0233] The embodiment of the present application does not limit the number of bits occupied by the QCL assumption indication information. Optionally, the QCL assumption indication information occupies 1 bit, or the QCL assumption indication information occupies 2 bits.

[0234] The QCL assumption indication information (Q) occupies 2 bits, and the values ​​indicated by the QCL assumption indication information may include the following cases.

[0235] Optionally, the value indicated by Q is 8, 16, 32, or 64. Wherein, SSB index = (candidate SSB index mod Q). It should be understood that when the maximum number of candidate positions that can be used to transmit SSB in an SSB burst set or a discovery signal transmission opportunity window is 64, if the value indicated by Q is 64, it means that 1 SSB index corresponds to only 1 SSB candidate position in an SSB burst set or a discovery signal transmission opportunity window, that is, no additional SSB transmission opportunities are added for 1 SSB index. Optionally, when the SSB is transmitted on an authorized frequency band included in the first frequency range or the SSB does not correspond to the LBT process when transmitted, the value indicated by Q is 64, or the UE does not expect the value of the Q indication to be other than 64.

[0236] Optionally, the value indicated by Q is 1, 2, 4, or 8. The Q value represents the number of candidate positions included in one SSB index in one SSB burst set or one discovery signal transmission opportunity window. For example, Q indicates 2, indicating that one SSB index includes 2 candidate positions in one SSB burst set or one discovery signal transmission opportunity window. Optionally, when the SSB is transmitted on an authorized frequency band included in the first frequency range or the SSB does not correspond to the LBT process when transmitted, the value indicated by Q is 1, or the UE does not expect the value of the Q indication to be other than 1.

[0237] Since the frequency bands in the first frequency range include higher frequencies and greater channel fading, the coverage of cells in the first frequency range is usually smaller. In this case, the interference between adjacent cells is usually smaller. Accordingly, on the unlicensed spectrum included in the first frequency range, the probability of successful LBT of the communication device is also higher, thereby obtaining more transmission opportunities. Therefore, there is no need to introduce too many SSB candidate positions to increase the transmission opportunities of SSB. Accordingly, the number of bits included in the QCL assumption indication information can also be reduced. Based on this, in one example, the number of bits occupied by the QCL assumption indication information is 1.

[0238] The QCL assumption indication information (Q) occupies 1 bit, and the values ​​indicated by the QCL assumption indication information may include the following cases.

[0239] Optionally, the value indicated by Q is 32 or 64; or, the value indicated by Q is 16 or 64. Wherein, SSB index = (candidate SSB index mod Q). Optionally, when the SSB is transmitted on an authorized frequency band included in the first frequency range or the SSB does not correspond to the LBT process when transmitted, the value indicated by Q is 64, or the UE does not expect the value of the Q indication to be other than 64.

[0240] Optionally, the value indicated by Q is 1 or 2; or, the value indicated by Q is 1 or 4. The Q value represents the number of candidate positions included in one SSB index in one SSB burst set or one discovery signal transmission opportunity window. For example, Q indicates 2, indicating that one SSB index includes 2 candidate positions in one SSB burst set or one discovery signal transmission opportunity window. Optionally, when the SSB is transmitted on an authorized frequency band included in the first frequency range or the SSB does not correspond to the LBT process when transmitted, the value indicated by Q is 1, or the UE does not expect the value of the Q indication to be other than 1.

[0241] The embodiment of the present application does not limit the method for determining the QCL assumption indication information. Optionally, the QCL assumption indication information is predefined by the communication protocol; or, the QCL assumption indication information is indicated by the second information carried in the PBCH in the first SSB. Optionally, the second information includes at least one of the following: third information in the MIB, MIB message type indication information, and half-frame indication information; wherein the third information includes at least one of the following information: common subcarrier spacing indication information, subcarrier offset indication information, TypeA DMRS position indication information, SIB1 PDCCH configuration information, and spare bits. The following is an introduction to the case where the QCL assumption indication information is indicated by the second information carried in the PBCH.

[0242] Optionally, the QCL assumption indication information is indicated by 1-bit common subcarrier spacing indication information in the MIB, for example, by subCarrierSpacingCommon indication.

[0243] Optionally, the QCL assumption indication information is indicated by 4-bit subcarrier offset indication information in the MIB, for example, by k SSB Optionally, when k SSB When the indicated value is less than the first preset value, QCL assumes that the indication information is indicated by the 4-bit subcarrier offset indication information in the MIB, for example, by k SSB Optionally, the first preset value is 12.

[0244] Optionally, the QCL assumption indication information is indicated by 4-bit subcarrier offset indication information in the MIB, for example, by k SSB Optionally, when k SSB When the indicated value is less than the first preset value, QCL assumes that the indication information is indicated by the 4-bit subcarrier offset indication information in the MIB, for example, by k SSB Optionally, the first preset value is 12.

[0245] Optionally, the QCL assumption indication information is indicated by 4-bit subcarrier offset indication information in the MIB, for example, by k SSB Optionally, when k SSB When the indicated value is less than the first preset value, QCL assumes that the indication information is indicated by the 4-bit subcarrier offset indication information in the MIB, for example, by k SSB The second bit in indicates.

[0246] Optionally, the QCL assumption indication information is indicated by 4-bit subcarrier offset indication information in the MIB, for example, by k SSB Optionally, when k SSB When the indicated value is less than the first preset value, QCL assumes that the indication information is indicated by the 4-bit subcarrier offset indication information in the MIB, for example, by k SSB The third bit in the indication information indicates.

[0247] Optionally, the QCL assumption indication information is indicated by 1-bit TypeA DMRS position indication information in the MIB. Since the TypeA DMRS position indication information is mainly used for information transmission in the initial access phase, the main purpose of configuring the TypeA DMRS position indication information is to coexist with the LTE system. In the first frequency range, since there is no need to coexist with the LTE system, the TypeA DMRS configuration may not be supported. Accordingly, the TypeA DMRS position indication information can be used to indicate other information, for example, to indicate the QCL assumption indication information.

[0248] Optionally, the QCL assumption indication information is indicated by at least 1 bit in the 8-bit SIB1 PDCCH configuration information in the MIB. Since there may be some redundant states in the SIB1 PDCCH configuration in the first frequency range, these redundant states when indicating the SIB1 PDCCH configuration may be used to indicate other information, for example, to indicate the QCL assumption indication information. Optionally, the at least 1 bit may include the least significant bit (i.e., the 8th bit) in the 8-bit SIB1 PDCCH configuration information, and / or, the at least 1 bit may include the most significant bit (i.e., the 1st bit) in the 8-bit SIB1 PDCCH configuration information, and / or, the at least 1 bit may include the 5th bit in the 8-bit SIB1 PDCCH configuration information, and / or, the at least 1 bit may include the 4th bit in the 8-bit SIB1PDCCH configuration information.

[0249] Optionally, the QCL assumption indication information is indicated by a 1-bit spare bit in the MIB.

[0250] Optionally, the QCL assumption indication information is indicated by 1-bit MIB message type indication information.

[0251] Optionally, the QCL assumption indication information is provided by the half-frame indication information a in the PBCH information bit. A+4 instruct.

[0252] With respect to the case where the QCL assumption indication information occupies 2 bits, the bits occupied by the QCL assumption indication information include 2 bits determined according to at least one of the above-mentioned various cases.

[0253] As an example, in the case where the QCL assumes that the indication information occupies 2 bits, 1 bit is the common subcarrier spacing indication information, such as subCarrierSpacingCommon; the other 1 bit is k SSB Optionally, when k SSB When the indicated value is less than 12, the common subcarrier spacing indication information and the 4-bit k SSB The low-order bits in are used to jointly indicate QCL assumption indication information.

[0254] As an example, when the QCL assumption indication information occupies 2 bits, 1 bit is common subcarrier spacing indication information, such as subCarrierSpacingCommon; and the other 1 bit is TypeA DMRS position indication information.

[0255] As an example, in the case where the QCL assumes that the indication information occupies 2 bits, the 2 bits are k SSB Optionally, when k SSB When the indicated value is less than 12, 4 bits k SSB The lowest two bits in are used to jointly indicate QCL hypothesis indication information.

[0256] For the case where the QCL assumption indication information occupies 1 bit, the bits occupied by the QCL assumption indication information include 1 bit determined according to one of the above-mentioned various cases.

[0257] As an example, in the case where the QCL assumption indication information occupies 1 bit, the QCL assumption indication information is indicated by common subcarrier spacing indication information, for example, by subCarrierSpacingCommon indication.

[0258] As an example, in the case where QCL assumes that the indication information occupies 1 bit, when k SSB When the indicated value is less than 12, QCL assumes that the indicated information is transmitted through k SSB The low-order bit in the indication information indicates.

[0259] As an example, in the case where the QCL assumption indication information occupies 1 bit, the QCL assumption indication information is indicated by the least significant bit (ie, the 8th bit) among the 8 bits included in the SIB1 PDCCH configuration information.

[0260] As an example, in the case where the QCL assumption indication information occupies 1 bit, the QCL assumption indication information is indicated by the 5th bit among the 8 bits included in the SIB1 PDCCH configuration information.

[0261] Before further introducing and explaining the technical solution provided in the embodiment of the present application, the following assumptions are made: the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message. It should be understood that the following embodiments are based on the above assumptions.

[0262] Optionally, the QCL assumption indicates that there is an association between the number of bits occupied by the information and the first subcarrier spacing or the second subcarrier spacing; and / or, there is an association between the second information and the first subcarrier spacing or the second subcarrier spacing.

[0263] Based on this, if QCL assumes that there is an association relationship between the indication information and the first subcarrier spacing, then, when the first subcarrier spacing is different, QCL assumes that the number of bits included in the indication information is different. If the second information is associated with the first subcarrier spacing, then, when the first subcarrier spacing is different, QCL assumes that the information domain (second information) reused by the indication information is different. If QCL assumes that there is an association relationship between the indication information and the second subcarrier spacing, then, when the second subcarrier spacing is different, QCL assumes that the number of bits included in the indication information is different. If the second information is associated with the second subcarrier spacing, then, when the second subcarrier spacing is different, QCL assumes that the information domain reused by the indication information is different. If QCL assumes that there is an association relationship between the indication information and the combination of the first subcarrier spacing and the second subcarrier spacing, then, when the combination of the first subcarrier spacing and the second subcarrier spacing is different, QCL assumes that the number of bits included in the indication information is different. If the second information is associated with the combination of the first subcarrier spacing and the second subcarrier spacing, then, when the combination of the first subcarrier spacing and the second subcarrier spacing is different, QCL assumes that the information domain reused by the indication information is different.

[0264] Optionally, for a terminal device in a connected state, the network device may also indicate the QCL relationship of the SSB through the configuration information of the serving cell, or the network device may also indicate the QCL relationship of the corresponding SSB when the terminal device performs radio resource management (Radio Resource Management, RRM) measurement.

[0265] Based on the design of PBCH in the first frequency range mentioned above, the following exemplifies a method for determining parameters used by a terminal device during an initial access process.

[0266] In the Band M1 frequency band included in the first frequency range, the subcarrier spacing corresponding to SSB transmission (first subcarrier spacing) is predefined as 120KHz, and the subcarrier spacing (second subcarrier spacing) corresponding to transmission of SIB1, message 2 or message 4 (Msg.2 / 4) for initial access, paging messages and system messages is the same as the first subcarrier spacing, that is, the second subcarrier spacing is also 120KHz.

[0267] In k SSB When the indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 in the first RB of the SSB, k SSB Valid indicator values ​​are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11.

[0268] The QCL assumption indication information (Q) includes 1 bit, and the value indicated by Q is 32 or 64. The QCL assumption indication information reuses the 1-bit common subcarrier spacing indication information in the MIB, as shown in the following Table 6.

[0269] Table 6 QCL assumption indication information

[0270] Common subcarrier spacing indication information QCL Assumption Indicator Information scs15or60 32 scs30or120 64

[0271] One point that needs to be explained is that, under the premise of no conflict, the various embodiments and / or the technical features in the various embodiments described in this application can be arbitrarily combined with each other, and the technical solution obtained after the combination should also fall within the protection scope of this application.

[0272] Another point that needs to be explained is that, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in this application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of this application.

[0273] It should be understood that in the various embodiments of the present application, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0274] Another point that needs to be explained is that, in the information determination method on the terminal device side described in the above embodiment, each step executed by the relevant network device can be independently implemented as an information transmission method on the network device side.

[0275] Please refer to Fig. 9 , which shows a block diagram of an information determination device provided by an embodiment of the present application. The device has the function of implementing the method example on the terminal device side, and the function can be implemented by hardware, or by hardware executing corresponding software. The device can be the terminal device 10 introduced above, or it can be set in the terminal device 10. Fig. 9 As shown, the device 900 may include: an information determination module 910.

[0276] The information determination module 910 is used to determine the information used by the terminal device during the initial access process based on the first frequency range.

[0277] In one example, the frequencies in the first frequency range are greater than 52.6 GHz and / or equal to 52.6 GHz.

[0278] In one example, the first frequency range includes 52.6 GHz to 71 GHz.

[0279] In one example, the information used by the terminal device during the initial access process includes a first subcarrier spacing; wherein the terminal device detects a first SSB on a first frequency band, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission, and the first frequency band belongs to the first frequency range.

[0280] In one example, the first subcarrier spacing is predefined by a communication protocol; and / or, the first subcarrier spacing is determined based on an association relationship, wherein the association relationship includes an association relationship between the subcarrier spacing corresponding to the SSB transmission and a frequency band in the first frequency range.

[0281] In one example, the first subcarrier spacing includes at least one of the following: 120KHz, 240KHz, 480KHz, 960KHz.

[0282] In one example, the information used by the terminal device during the initial access process includes a second subcarrier spacing; wherein the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with a first SSB, the first SSB is the SSB detected by the terminal device on a first frequency band, and the first frequency band belongs to the first frequency range; the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, a paging message, and a system message.

[0283] In one example, the second subcarrier spacing is predefined by a communication protocol; and / or, the second subcarrier spacing is determined based on at least one of the following information: a first subcarrier spacing, the first frequency band, and first indication information; the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission.

[0284] In one example, the first indication information includes at least one of the following: common subcarrier spacing indication information, and other information carried in the PBCH in the first SSB.

[0285] In an example, the other information includes at least one of the following: TypeA DMRS position indication information, SIB1 PDCCH configuration information, subcarrier offset indication information, spare bits, MIB message type indication information, and half-frame indication information.

[0286] In one example, the second subcarrier spacing includes at least one of the following: 120 KHz, 240 KHz, 480 KHz, 960 KHz.

[0287] In one example, the information used by the terminal device during the initial access process includes subcarrier offset indication information; wherein the subcarrier offset indication information is carried in the PBCH in the first SSB, the first SSB is the SSB detected by the terminal device on the first frequency band, and the first frequency band belongs to the first frequency range; the subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 of the first resource block RB of the first SSB, the center of subcarrier 0 of the second CRB coincides with the center of subcarrier 0 of the first CRB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

[0288] In one example, the subcarrier spacing corresponding to the subcarrier offset indication information is predefined by a communication protocol; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0289] In one example, the subcarrier spacing corresponding to the first CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the first CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the first CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0290] In one example, the subcarrier spacing corresponding to the second CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the second CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0291] In one example, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB, and the second CRB and the first CRB are the same CRB.

[0292] In one example, when the first subcarrier spacing and the second subcarrier spacing are the same, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0293] In one example, when the first subcarrier spacing is greater than the second subcarrier spacing and the ratio of the first subcarrier spacing to the second subcarrier spacing is N1, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, N1, 2*N1, ..., (M1-1)*N1}, wherein M1*N1=m*12, and m is the smallest positive integer satisfying M1*N1=m*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0294] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, ..., 12*N2-1}; {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0295] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the subcarrier index range within an RB corresponding to subcarrier 0 of the first RB of the first SSB includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, N2, 2*N2, ..., (M2-1)*N2}, wherein M2*N2=n*12, and n is the smallest positive integer satisfying M2*N2=n*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0296] In one example, the information used by the terminal device during the initial access process includes QCL assumption indication information.

[0297] In one example, the QCL assumption indication information is predefined by a communication protocol; or, the QCL assumption indication information is indicated by second information carried in a PBCH in a first SSB.

[0298] In one example, the second information includes at least one of the following: third information in the MIB, MIB message type indication information, and half-frame indication information; wherein the third information includes at least one of the following information: common subcarrier spacing indication information, subcarrier offset indication information, TypeA DMRS position indication information, SIB1 PDCCH configuration information, and spare bits.

[0299] In one example, the QCL assumption indicates that there is an association between the number of bits occupied by the information and the first subcarrier spacing or the second subcarrier spacing; and / or, there is an association between the second information and the first subcarrier spacing or the second subcarrier spacing; wherein, the terminal device detects the first SSB on the first frequency band, the first subcarrier spacing refers to the subcarrier spacing corresponding to the transmission of the first SSB, and the first frequency band belongs to the first frequency range; the second subcarrier spacing refers to the subcarrier spacing corresponding to the transmission of the first information, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0300] In an example, the QCL assumes that the indication information occupies 1 bit, or the QCL assumes that the indication information occupies 2 bits.

[0301] To summarize, the technical solution provided in the embodiment of the present application is designed for information transmission in PBCH on a high-frequency frequency band. During the initial access process, the network device sends SSB, SIB1 and other information to the terminal device based on the high-frequency frequency band, so that the terminal device determines the information used in the initial access process based on the high-frequency frequency band, such as determining the subcarrier spacing corresponding to SSB transmission, the subcarrier spacing corresponding to SIB1 transmission, subcarrier offset indication information, QCL assumption indication information, etc., so that the terminal device can subsequently use the information to access the network device and realize information interaction with the network device on the high-frequency frequency band.

[0302] Please refer to Fig.10 , which shows a block diagram of an information transmission device provided by an embodiment of the present application. The device has the function of implementing the method example on the network device side, and the function can be implemented by hardware or by hardware executing corresponding software. The device can be the network device 20 introduced above, or it can be set in the network device 20. Fig.10 As shown, the device 1000 may include: a first sending module 1010.

[0303] The first sending module 1010 is used to send a first SSB to the terminal device through a first frequency band, and the first frequency band belongs to a first frequency range.

[0304] In one example, the frequencies in the first frequency range are greater than 52.6 GHz and / or equal to 52.6 GHz.

[0305] In one example, the first frequency range includes 52.6 GHz to 71 GHz.

[0306] In one example, the subcarrier spacing corresponding to the first SSB transmission is a first subcarrier spacing; the first subcarrier spacing is predefined by a communication protocol; and / or the first subcarrier spacing is determined according to an association relationship, and the association relationship includes an association relationship between the subcarrier spacing corresponding to the SSB transmission and a frequency band in the first frequency range.

[0307] In one example, the subcarrier spacing corresponding to the first SSB transmission is a first subcarrier spacing; the first subcarrier spacing includes at least one of the following: 120KHz, 240KHz, 480KHz, 960KHz.

[0308] In one example, if Fig.11As shown, the device 1000 also includes: a second sending module 1020, used to send first information to the terminal device through the first frequency band, and the first information is associated with the first SSB; wherein the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0309] In one example, the subcarrier spacing corresponding to the first information transmission is the second subcarrier spacing; the second subcarrier spacing is predefined by the communication protocol; and / or the second subcarrier spacing is determined based on at least one of the following information: the first subcarrier spacing, the first frequency band, and the first indication information; the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission.

[0310] In one example, the first indication information includes at least one of the following: common subcarrier spacing indication information, and other information carried in the PBCH in the first SSB.

[0311] In an example, the other information includes at least one of the following: TypeA DMRS position indication information, SIB1 PDCCH configuration information, subcarrier offset indication information, spare bits, MIB message type indication information, and half-frame indication information.

[0312] In one example, the second subcarrier spacing includes at least one of the following: 120 KHz, 240 KHz, 480 KHz, 960 KHz.

[0313] In one example, the PBCH in the first SSB carries subcarrier offset indication information; wherein the subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 of the first resource block RB of the first SSB, the center of subcarrier 0 of the second CRB coincides with the center of subcarrier 0 of the first CRB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

[0314] In one example, the subcarrier spacing corresponding to the subcarrier offset indication information is predefined by a communication protocol; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0315] In one example, the subcarrier spacing corresponding to the first CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the first CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the first CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0316] In one example, the subcarrier spacing corresponding to the second CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the second CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0317] In one example, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB, and the second CRB and the first CRB are the same CRB.

[0318] In one example, when the first subcarrier spacing and the second subcarrier spacing are the same, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0319] In one example, when the first subcarrier spacing is greater than the second subcarrier spacing and the ratio of the first subcarrier spacing to the second subcarrier spacing is N1, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, N1, 2*N1, ..., (M1-1)*N1}, wherein M1*N1=m*12, and m is the smallest positive integer satisfying M1*N1=m*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0320] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, ..., 12*N2-1}; {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0321] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the subcarrier index range within an RB corresponding to subcarrier 0 of the first RB of the first SSB includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, N2, 2*N2, ..., (M2-1)*N2}, wherein M2*N2=n*12, and n is the smallest positive integer satisfying M2*N2=n*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0322] In one example, the second information carried in the PBCH in the first SSB is used to indicate QCL assumption indication information.

[0323] In one example, the second information includes at least one of the following: third information in the MIB, MIB message type indication information, and half-frame indication information; wherein the third information includes at least one of the following information: common subcarrier spacing indication information, subcarrier offset indication information, TypeA DMRS position indication information, SIB1 PDCCH configuration information, and spare bits.

[0324] In one example, the QCL assumption indicates that there is an association between the number of bits occupied by the information and the first subcarrier spacing or the second subcarrier spacing; and / or, there is an association between the second information and the first subcarrier spacing or the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0325] In an example, the QCL assumes that the indication information occupies 1 bit, or the QCL assumes that the indication information occupies 2 bits.

[0326] To summarize, the technical solution provided in the embodiment of the present application is designed for information transmission in PBCH on a high-frequency frequency band. During the initial access process, the network device sends SSB, SIB1 and other information to the terminal device based on the high-frequency frequency band, so that the terminal device determines the information used in the initial access process based on the high-frequency frequency band, such as determining the subcarrier spacing corresponding to SSB transmission, the subcarrier spacing corresponding to SIB1 transmission, subcarrier offset indication information, QCL assumption indication information, etc., so that the terminal device can subsequently use the information to access the network device and realize information interaction with the network device on the high-frequency frequency band.

[0327] One point that needs to be explained is that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0328] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0329] Please refer to Fig.12 , which shows a schematic diagram of the structure of a terminal device 120 provided in an embodiment of the present application. For example, the terminal device can be used to execute the above-mentioned information determination method on the terminal device side. Specifically, the terminal device 120 may include: a processor 121, and a transceiver 122 connected to the processor 121; wherein:

[0330] The processor 121 includes one or more processing cores. The processor 121 executes various functional applications and information processing by running software programs and modules.

[0331] The transceiver 122 includes a receiver and a transmitter. Optionally, the transceiver 122 is a communication chip.

[0332] In one example, the terminal device 120 further includes: a memory and a bus. The memory is connected to the processor via the bus. The memory can be used to store a computer program, and the processor is used to execute the computer program to implement the various steps performed by the terminal device in the above method embodiment.

[0333] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc) or other optical storage, tape cassettes, magnetic tapes, disk storage or other magnetic storage devices.

[0334] in:

[0335] The processor 121 is used to determine the information used by the terminal device during the initial access process based on the first frequency range.

[0336] In one example, the frequencies in the first frequency range are greater than 52.6 GHz and / or equal to 52.6 GHz.

[0337] In one example, the first frequency range includes 52.6 GHz to 71 GHz.

[0338] In one example, the information used by the terminal device during the initial access process includes a first subcarrier spacing; wherein the terminal device detects a first SSB on a first frequency band, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission, and the first frequency band belongs to the first frequency range.

[0339] In one example, the first subcarrier spacing is predefined by a communication protocol; and / or, the first subcarrier spacing is determined based on an association relationship, wherein the association relationship includes an association relationship between the subcarrier spacing corresponding to the SSB transmission and a frequency band in the first frequency range.

[0340] In one example, the first subcarrier spacing includes at least one of the following: 120KHz, 240KHz, 480KHz, 960KHz.

[0341] In one example, the information used by the terminal device during the initial access process includes a second subcarrier spacing; wherein the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with a first SSB, the first SSB is the SSB detected by the terminal device on a first frequency band, and the first frequency band belongs to the first frequency range; the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, a paging message, and a system message.

[0342] In one example, the second subcarrier spacing is predefined by a communication protocol; and / or, the second subcarrier spacing is determined based on at least one of the following information: a first subcarrier spacing, the first frequency band, and first indication information; the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission.

[0343] In one example, the first indication information includes at least one of the following: common subcarrier spacing indication information, and other information carried in the PBCH in the first SSB.

[0344] In an example, the other information includes at least one of the following: TypeA DMRS position indication information, SIB1 PDCCH configuration information, subcarrier offset indication information, spare bits, MIB message type indication information, and half-frame indication information.

[0345] In one example, the second subcarrier spacing includes at least one of the following: 120 KHz, 240 KHz, 480 KHz, 960 KHz.

[0346] In one example, the information used by the terminal device during the initial access process includes subcarrier offset indication information; wherein the subcarrier offset indication information is carried in the PBCH in the first SSB, the first SSB is the SSB detected by the terminal device on the first frequency band, and the first frequency band belongs to the first frequency range; the subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 of the first resource block RB of the first SSB, the center of subcarrier 0 of the second CRB coincides with the center of subcarrier 0 of the first CRB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

[0347] In one example, the subcarrier spacing corresponding to the subcarrier offset indication information is predefined by a communication protocol; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0348] In one example, the subcarrier spacing corresponding to the first CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the first CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the first CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0349] In one example, the subcarrier spacing corresponding to the second CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the second CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0350] In one example, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB, and the second CRB and the first CRB are the same CRB.

[0351] In one example, when the first subcarrier spacing and the second subcarrier spacing are the same, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0352] In one example, when the first subcarrier spacing is greater than the second subcarrier spacing and the ratio of the first subcarrier spacing to the second subcarrier spacing is N1, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, N1, 2*N1, ..., (M1-1)*N1}, wherein M1*N1=m*12, and m is the smallest positive integer satisfying M1*N1=m*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0353] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, ..., 12*N2-1}; {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0354] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the subcarrier index range within an RB corresponding to subcarrier 0 of the first RB of the first SSB includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, N2, 2*N2, ..., (M2-1)*N2}, wherein M2*N2=n*12, and n is the smallest positive integer satisfying M2*N2=n*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0355] In one example, the information used by the terminal device during the initial access process includes QCL assumption indication information.

[0356] In one example, the QCL assumption indication information is predefined by a communication protocol; or, the QCL assumption indication information is indicated by second information carried in a PBCH in a first SSB.

[0357] In one example, the second information includes at least one of the following: third information in the MIB, MIB message type indication information, and half-frame indication information; wherein the third information includes at least one of the following information: common subcarrier spacing indication information, subcarrier offset indication information, TypeA DMRS position indication information, SIB1 PDCCH configuration information, and spare bits.

[0358] In one example, the QCL assumption indicates that there is an association between the number of bits occupied by the information and the first subcarrier spacing or the second subcarrier spacing; and / or, there is an association between the second information and the first subcarrier spacing or the second subcarrier spacing; wherein, the terminal device detects the first SSB on the first frequency band, the first subcarrier spacing refers to the subcarrier spacing corresponding to the transmission of the first SSB, and the first frequency band belongs to the first frequency range; the second subcarrier spacing refers to the subcarrier spacing corresponding to the transmission of the first information, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0359] In an example, the QCL assumes that the indication information occupies 1 bit, or the QCL assumes that the indication information occupies 2 bits.

[0360] Please refer to Fig.13 , which shows a schematic diagram of the structure of a network device 130 provided in an embodiment of the present application. For example, the network device can be used to execute the above-mentioned information transmission method on the network device side. Specifically, the network device 130 may include: a processor 131, and a transceiver 132 connected to the processor 131; wherein:

[0361] The processor 131 includes one or more processing cores. The processor 131 executes various functional applications and information processing by running software programs and modules.

[0362] The transceiver 132 includes a receiver and a transmitter. Optionally, the transceiver 132 is a communication chip.

[0363] In one example, the network device 130 further includes: a memory and a bus. The memory is connected to the processor via the bus. The memory can be used to store a computer program, and the processor is used to execute the computer program to implement the various steps performed by the network device in the above method embodiment.

[0364] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc) or other optical storage, tape cassettes, magnetic tapes, disk storage or other magnetic storage devices.

[0365] in:

[0366] The transceiver 132 is used to send a first SSB to the terminal device through a first frequency band, and the first frequency band belongs to a first frequency range.

[0367] In one example, the frequencies in the first frequency range are greater than 52.6 GHz and / or equal to 52.6 GHz.

[0368] In one example, the first frequency range includes 52.6 GHz to 71 GHz.

[0369] In one example, the subcarrier spacing corresponding to the first SSB transmission is a first subcarrier spacing; the first subcarrier spacing is predefined by a communication protocol; and / or the first subcarrier spacing is determined according to an association relationship, and the association relationship includes an association relationship between the subcarrier spacing corresponding to the SSB transmission and a frequency band in the first frequency range.

[0370] In one example, the subcarrier spacing corresponding to the first SSB transmission is a first subcarrier spacing; the first subcarrier spacing includes at least one of the following: 120KHz, 240KHz, 480KHz, 960KHz.

[0371] In one example, the transceiver 132 is also used to send first information to the terminal device through the first frequency band, and the first information is associated with the first SSB; wherein the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, and system message.

[0372] In one example, the subcarrier spacing corresponding to the first information transmission is the second subcarrier spacing; the second subcarrier spacing is predefined by the communication protocol; and / or the second subcarrier spacing is determined based on at least one of the following information: the first subcarrier spacing, the first frequency band, and the first indication information; the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission.

[0373] In one example, the first indication information includes at least one of the following: common subcarrier spacing indication information, and other information carried in the PBCH in the first SSB.

[0374] In an example, the other information includes at least one of the following: TypeA DMRS position indication information, SIB1 PDCCH configuration information, subcarrier offset indication information, spare bits, MIB message type indication information, and half-frame indication information.

[0375] In one example, the second subcarrier spacing includes at least one of the following: 120 KHz, 240 KHz, 480 KHz, 960 KHz.

[0376] In one example, the PBCH in the first SSB carries subcarrier offset indication information; wherein the subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second CRB and subcarrier 0 of the first resource block RB of the first SSB, the center of subcarrier 0 of the second CRB coincides with the center of subcarrier 0 of the first CRB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

[0377] In one example, the subcarrier spacing corresponding to the subcarrier offset indication information is predefined by a communication protocol; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the subcarrier offset indication information is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0378] In one example, the subcarrier spacing corresponding to the first CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the first CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the first CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0379] In one example, the subcarrier spacing corresponding to the second CRB is predefined by a communication protocol; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB; or, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, the subcarrier spacing corresponding to the second CRB is equal to the first subcarrier spacing; or, the subcarrier spacing corresponding to the second CRB is equal to the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0380] In one example, the subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB, and the second CRB and the first CRB are the same CRB.

[0381] In one example, when the first subcarrier spacing and the second subcarrier spacing are the same, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0382] In one example, when the first subcarrier spacing is greater than the second subcarrier spacing and the ratio of the first subcarrier spacing to the second subcarrier spacing is N1, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, N1, 2*N1, ..., (M1-1)*N1}, wherein M1*N1=m*12, and m is the smallest positive integer satisfying M1*N1=m*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0383] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the range corresponding to the number of offset subcarriers indicated by the subcarrier offset indication information includes one of the following cases: {0, 1, 2, ..., 12*N2-1}; {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; {1, 3, 5, 7, 9, 11}; {3, 7, 11}; wherein the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0384] In an example, when the first subcarrier spacing is smaller than the second subcarrier spacing and the ratio of the second subcarrier spacing to the first subcarrier spacing is N2, the subcarrier index range within an RB corresponding to subcarrier 0 of the first RB of the first SSB includes one of the following cases: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; {0, N2, 2*N2, ..., (M2-1)*N2}, wherein M2*N2=n*12, and n is the smallest positive integer satisfying M2*N2=n*12; {0, 2, 4, 6, 8, 10}; {0, 4, 8}; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0385] In one example, the second information carried in the PBCH in the first SSB is used to indicate QCL assumption indication information.

[0386] In one example, the second information includes at least one of the following: third information in the MIB, MIB message type indication information, and half-frame indication information; wherein the third information includes at least one of the following information: common subcarrier spacing indication information, subcarrier offset indication information, TypeA DMRS position indication information, SIB1 PDCCH configuration information, and spare bits.

[0387] In one example, the QCL assumption indicates that there is an association between the number of bits occupied by the information and the first subcarrier spacing or the second subcarrier spacing; and / or, there is an association between the second information and the first subcarrier spacing or the second subcarrier spacing; wherein, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

[0388] In an example, the QCL assumes that the indication information occupies 1 bit, or the QCL assumes that the indication information occupies 2 bits.

[0389] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a terminal device to implement the information determination method on the terminal device side as described above.

[0390] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a network device to implement the information transmission method on the network device side as described above.

[0391] An embodiment of the present application also provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a terminal device, it is used to implement the information determination method on the terminal device side as described above.

[0392] An embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a network device, it is used to implement the information transmission method on the network device side as described above.

[0393] The embodiment of the present application also provides a computer program product, which, when executed on a terminal device, is used to implement the information determination method on the terminal device side as described above.

[0394] The embodiment of the present application also provides a computer program product, which, when executed on a network device, is used to implement the information transmission method on the network device side as described above.

[0395] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented with hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein the communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

[0396] The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for determining information, characterized in that: Applied in a terminal device, the method comprises: Based on the first frequency range, information used by the terminal device during an initial access process is determined.

2. The method according to claim 1, characterized in that: The first frequency range includes 52.6 GHz to 71 GHz.

3. The method according to claim 1 or 2, characterized in that: The information used by the terminal device during the initial access process includes the first subcarrier spacing; The terminal device detects a first synchronization signal block SSB on a first frequency band, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission, and the first frequency band belongs to the first frequency range.

4. The method according to claim 3, characterized in that The first subcarrier spacing is predefined by a communication protocol; and / or, The first subcarrier spacing is determined according to an association relationship, where the association relationship includes an association relationship between a subcarrier spacing corresponding to SSB transmission and a frequency band in the first frequency range.

5. The method according to any one of claims 1 to 4, characterized in that: The information used by the terminal device during the initial access process includes the second subcarrier spacing; Among them, the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, the first SSB is the SSB detected by the terminal device on the first frequency band, and the first frequency band belongs to the first frequency range; the first information includes at least one of the following: system message block SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

6. The method according to claim 5, characterized in that The second subcarrier spacing is predefined by a communication protocol; and / or, The second subcarrier spacing is determined based on at least one of the following information: the first subcarrier spacing, the first frequency band, and the first indication information; the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission.

7. The method according to any one of claims 1 to 6, characterized in that: The information used by the terminal device during the initial access process includes subcarrier offset indication information; Among them, the subcarrier offset indication information is carried in the PBCH in the first SSB, the first SSB is the SSB detected by the terminal device on the first frequency band, and the first frequency band belongs to the first frequency range; the subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second common resource block CRB and subcarrier 0 of the first resource block RB of the first SSB, the center of subcarrier 0 of the second CRB coincides with the center of subcarrier 0 of the first CRB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

8. The method according to claim 7, characterized in that The subcarrier spacing corresponding to the subcarrier offset indication information is predefined by the communication protocol; or, The subcarrier spacing corresponding to the subcarrier offset indication information is equal to the first subcarrier spacing; or, The subcarrier spacing corresponding to the subcarrier offset indication information is equal to the second subcarrier spacing; Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

9. The method according to claim 7 or 8, characterized in that: The subcarrier spacing corresponding to the first CRB is predefined by a communication protocol; or, The subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, The subcarrier spacing corresponding to the first CRB is equal to the first subcarrier spacing; or, The subcarrier spacing corresponding to the first CRB is equal to the second subcarrier spacing; Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

10. The method according to any one of claims 7 to 9, characterized in that: The subcarrier spacing corresponding to the second CRB is predefined by the communication protocol; or, The subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB; or, The subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, The subcarrier spacing corresponding to the second CRB is equal to the first subcarrier spacing; or, The subcarrier spacing corresponding to the second CRB is equal to the second subcarrier spacing; Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

11. The method according to any one of claims 7 to 10, characterized in that: The subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB, and the second CRB and the first CRB are the same CRB.

12. The method according to any one of claims 7 to 11, characterized in that When the first subcarrier spacing and the second subcarrier spacing are the same, the range corresponding to the number of subcarriers offset indicated by the subcarrier offset indication information includes one of the following situations: {0、1、2、3、4、5、6、7、8、9、10、11}； {0、2、4、6、8、10}； {0、4、8}； {1、3、5、7、9、11}； {3、7、11}； Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

13. The method according to any one of claims 1 to 12, characterized in that: The information used by the terminal device during the initial access process includes quasi-co-location QCL assumption indication information.

14. The method according to claim 13, characterized in that The QCL assumption indication information is predefined by the communication protocol; or, The QCL assumption indication information is indicated by the second information carried in the PBCH in the first SSB.

15. The method according to claim 14, characterized in that The second information includes at least one of the following: third information in the MIB, MIB message type indication information, and half-frame indication information; The third information includes at least one of the following information: common subcarrier spacing indication information, subcarrier offset indication information, TypeA DMRS position indication information, SIB1 PDCCH configuration information, and spare bits.

16. The method according to any one of claims 13 to 15, characterized in that The QCL assumes that the indication information occupies 1 bit, or the QCL assumes that the indication information occupies 2 bits.

17. An information transmission method, characterized in that: Applied in a network device, the method comprises: A first synchronization signal block SSB is sent to a terminal device via a first frequency band, wherein the first frequency band belongs to a first frequency range.

18. The method according to claim 17, characterized in that The first frequency range includes 52.6 GHz to 71 GHz.

19. The method according to claim 17 or 18, characterized in that The subcarrier spacing corresponding to the first SSB transmission is the first subcarrier spacing; The first subcarrier spacing is predefined by a communication protocol; and / or, The first subcarrier spacing is determined according to an association relationship, where the association relationship includes an association relationship between a subcarrier spacing corresponding to SSB transmission and a frequency band in the first frequency range.

20. The method according to any one of claims 17 to 19, characterized in that The method further comprises: Sending first information to the terminal device through the first frequency band, where the first information is associated with the first SSB; The first information includes at least one of the following: system message block SIB1, message 2 or message 4 transmitted during the initial access process, paging message, and system message.

21. The method according to claim 20, characterized in that The subcarrier spacing corresponding to the first information transmission is the second subcarrier spacing; The second subcarrier spacing is predefined by a communication protocol; and / or, The second subcarrier spacing is determined based on at least one of the following information: the first subcarrier spacing, the first frequency band, and the first indication information; the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission.

22. The method according to any one of claims 17 to 21, characterized in that The PBCH in the first SSB carries subcarrier offset indication information; Among them, the subcarrier offset indication information is used to indicate the number of subcarriers offset between subcarrier 0 in the second common resource block CRB and subcarrier 0 of the first resource block RB of the first SSB, the center of subcarrier 0 of the second CRB coincides with the center of subcarrier 0 of the first CRB, and the first CRB overlaps with subcarrier 0 of the first RB of the first SSB.

23. The method according to claim 22, characterized in that The subcarrier spacing corresponding to the subcarrier offset indication information is predefined by the communication protocol; or, The subcarrier spacing corresponding to the subcarrier offset indication information is equal to the first subcarrier spacing; or, The subcarrier spacing corresponding to the subcarrier offset indication information is equal to the second subcarrier spacing; Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

24. The method according to claim 22 or 23, characterized in that The subcarrier spacing corresponding to the first CRB is predefined by a communication protocol; or, The subcarrier spacing corresponding to the first CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, The subcarrier spacing corresponding to the first CRB is equal to the first subcarrier spacing; or, The subcarrier spacing corresponding to the first CRB is equal to the second subcarrier spacing; Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

25. The method according to any one of claims 22 to 24, characterized in that The subcarrier spacing corresponding to the second CRB is predefined by the communication protocol; or, The subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB; or, The subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the subcarrier offset indication information; or, The subcarrier spacing corresponding to the second CRB is equal to the first subcarrier spacing; or, The subcarrier spacing corresponding to the second CRB is equal to the second subcarrier spacing; Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

26. The method according to any one of claims 22 to 25, characterized in that The subcarrier spacing corresponding to the second CRB is equal to the subcarrier spacing corresponding to the first CRB, and the second CRB and the first CRB are the same CRB.

27. The method according to any one of claims 22 to 26, characterized in that When the first subcarrier spacing and the second subcarrier spacing are the same, the range corresponding to the number of subcarriers offset indicated by the subcarrier offset indication information includes one of the following situations: {0、1、2、3、4、5、6、7、8、9、10、11}； {0、2、4、6、8、10}； {0、4、8}； {1、3、5、7、9、11}； {3、7、11}； Among them, the first subcarrier spacing refers to the subcarrier spacing corresponding to the first SSB transmission; the second subcarrier spacing refers to the subcarrier spacing corresponding to the first information transmission, the first information is associated with the first SSB, and the first information includes at least one of the following: SIB1, message 2 or message 4 transmitted during the initial access process, paging message, system message.

28. The method according to any one of claims 17 to 27, characterized in that The second information carried in the PBCH in the first SSB is used to indicate quasi-co-site QCL assumption indication information.

29. The method according to claim 28, characterized in that The second information includes at least one of the following: third information in the MIB, MIB message type indication information, and half-frame indication information; The third information includes at least one of the following information: common subcarrier spacing indication information, subcarrier offset indication information, TypeA DMRS position indication information, SIB1 PDCCH configuration information, and spare bits.

30. The method according to claim 28 or 29, characterized in that The QCL assumes that the indication information occupies 1 bit, or the QCL assumes that the indication information occupies 2 bits.

31. An information determination device, characterized in that: Set in a terminal device, the device includes: An information determination module is used to determine the information used by the terminal device during the initial access process based on the first frequency range.

32. An information transmission device, characterized in that: Set in a network device, the device includes: The first sending module is used to send a first synchronization signal block SSB to the terminal device through a first frequency band, and the first frequency band belongs to a first frequency range.

33. A terminal device, characterized in that: The terminal device comprises: a processor, and a transceiver connected to the processor; wherein: The processor is used to determine the information used by the terminal device during the initial access process based on the first frequency range.

34. A network device, characterized in that: The network device comprises: a processor, and a transceiver connected to the processor; wherein: The transceiver is used to send a first synchronization signal block SSB to a terminal device via a first frequency band, and the first frequency band belongs to a first frequency range.

35. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which is used to be executed by a processor of a terminal device to implement the information determination method as described in any one of claims 1 to 16, or to implement the information transmission method as described in any one of claims 17 to 30.

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