A discovery signal transmission window determination method and apparatus, and a storage medium

Abstract

The present disclosure relates to a discovery signal transmission window determination method, device and storage medium. The discovery signal transmission window DBTW determination method is applied to a network device, and the DBTW determination method comprises: determining a working frequency band in a terminal initial access process, and determining a DBTW length used by the terminal for transmitting a synchronization signal block in the initial access process in the working frequency band; and transmitting the DBTW length. The discovery signal transmission window DBTW determination method is applied to a terminal, and the DBTW determination method comprises: determining a working frequency band according to an initial search procedure; and determining a DBTW length used by a synchronization signal block in an initial access process based on the working frequency band. Through the present disclosure, the determination of the DBTW length in the initial access process in the NR 52.6-71 GHz communication frequency band can be realized.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a discovery signal transmission window determination method and device and storage medium. BACKGROUND

[0002] With the development of communication technology, higher frequency bands will be used for communication, for example, a high frequency band supporting 52.6 GHz-71 GHz. Among them, the spectrum design of 52.6 GHz-71 GHz will use a higher sub-carrier spacing (SCS), for example, 960 kHz can be used, that is, the sub-carrier spacing supported for the transmission of data in the high frequency band can support 960k, and other optional values are 480 kHz, 240 kHz, 120 kHz and 60 kHz.

[0003] In the related art, the transmission of signals is mainly based on the 5G FR2 (7.126-52.6) frequency band. For example, discovery burst (DB) transmission is performed in the initial access stage of the terminal. In the related art, when DB transmission is performed, the configuration of the discovery burst transmission window (DBTW) is performed.

[0004] In the 5G FR2 (7.126-52.6) frequency band, data uses two sub-carrier spacings of 120 kHz / 60 kHz, and the synchronization signal block (SSB) uses two sub-carrier spacings of 240 kHz / 120 kHz. In order to improve transmission reliability, candidate SSBs can be set. However, for 52.6-71 GHz, more SSBs need to be transmitted, and there may be no candidate SSB position. However, in the initial access stage, the DBTW cannot be configured by signaling, so the transmission of SSBs will be affected. SUMMARY

[0005] In order to overcome the problems in the related art, the present disclosure provides a discovery signal transmission window determination method, device and storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a discovery signal transmission window DBTW determination method is provided, applied to a network device, and the DBTW determination method comprises:

[0007] determining a working frequency band in the initial access process of a terminal, and determining a DBTW length used by the terminal for transmitting a synchronization signal block in the working frequency band in the initial access process; and transmitting the DBTW length.

[0008] In an embodiment, the sending the DBTW length comprises sending physical broadcast channel indication information, the physical broadcast indication information being used to indicate the DBTW length.

[0009] In an embodiment, the physical broadcast channel indication information is used to indicate one or more DBTW lengths.

[0010] In an embodiment, the physical broadcast channel indication information is used to indicate a plurality of DBTW lengths, wherein different DBTW lengths in the plurality of DBTW lengths correspond to being configured with different numbers of candidate synchronization signal blocks.

[0011] In an embodiment, the physical broadcast channel indication information is used to indicate two DBTW lengths, the two DBTW lengths being carried in one bit in subcarrier indication information of a physical broadcast channel.

[0012] In an embodiment, the operating frequency band comprises a licensed frequency band, or an unlicensed frequency band, or a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed.

[0013] According to a second aspect of the embodiments of the present disclosure, a discovery signal transmission window (DBTW) determination method is provided, applied to a terminal, and the DBTW determination method comprises:

[0014] According to an initial search procedure, an operating frequency band is determined; and based on the operating frequency band, a DBTW length used for transmitting a synchronization signal block in an initial access procedure is determined.

[0015] In an embodiment, based on the operating frequency band, the DBTW length used for transmitting the synchronization signal block in the initial access procedure is determined, comprising:

[0016] In response to the operating frequency band being an unlicensed frequency band and a subcarrier spacing being less than a subcarrier spacing threshold, based on a synchronization signal block index identifier parsed in the initial access, the DBTW length used for transmitting the synchronization signal block in the initial access procedure is determined.

[0017] In an embodiment, based on the synchronization signal block index identifier parsed in the initial access procedure, the DBTW length used for transmitting the synchronization signal block in the initial access procedure is determined, comprising:

[0018] In response to the synchronization signal block index identifier parsed in the initial access procedure being greater than an index identifier threshold, it is determined that the DBTW is not used for transmitting the synchronization signal block in the initial access procedure.

[0019] In an embodiment, based on the synchronization signal block index identifier parsed in the initial access procedure, the DBTW length used for transmitting the synchronization signal block in the initial access procedure is determined, comprising:

[0020] In response to the synchronization signal block index identified in the initial access procedure being less than or equal to an index identification threshold, it is determined that the synchronization signal block is transmitted in the initial access procedure using DBTW.

[0021] In an embodiment, the DBTW length is a default DBTW length.

[0022] In an embodiment, the DBTW determination method further comprises:

[0023] Receiving physical broadcast channel indication information, the physical broadcast channel indication information being used to indicate a DBTW length used by a terminal to transmit a synchronization signal block in an initial access procedure in the operating frequency band.

[0024] Based on the operating frequency band, determining a DBTW length used by a synchronization signal block in an initial access procedure comprises:

[0025] In response to the operating frequency band being an unlicensed frequency band and the subcarrier spacing being greater than a subcarrier spacing threshold, determining the DBTW length used by the synchronization signal block in the initial access procedure based on the physical broadcast channel indication information.

[0026] In an embodiment, the physical broadcast channel indication information is used to indicate one or more DBTW lengths.

[0027] In an embodiment, different DBTW lengths correspond to configurations of different numbers of candidate synchronization signal blocks.

[0028] In an embodiment, the physical broadcast channel indication information is used to indicate that two DBTW lengths are configured, and the two DBTW lengths are carried in one bit in subcarrier indication information of a physical broadcast channel.

[0029] In an embodiment, based on the operating frequency band, determining a DBTW length used by a synchronization signal block in an initial access procedure comprises: in response to the operating frequency band being a licensed frequency band, determining that the synchronization signal block is not transmitted in the initial access procedure using DBTW.

[0030] In an embodiment, based on the operating frequency band, determining a DBTW length used by a synchronization signal block in an initial access procedure comprises:

[0031] In response to the operating frequency band being a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed, determining the DBTW length used by the synchronization signal block in the initial access procedure based on the physical broadcast channel indication information.

[0032] According to a third aspect of embodiments of the present disclosure, a discovery signal transmission window DBTW determination apparatus is provided, applied to a network device, and the DBTW determination apparatus comprises:

[0033] a processing unit configured to determine a working frequency band in a terminal initial access procedure, and determine a DBTW length used by the terminal in transmitting a synchronization signal block in the initial access procedure in the working frequency band; and

[0034] In an embodiment, the sending unit is configured to send physical broadcast channel indication information, and the physical broadcast indication information is used to indicate the DBTW length.

[0035] In an embodiment, the physical broadcast channel indication information is used to indicate one or more DBTW lengths.

[0036] In an embodiment, the physical broadcast channel indication information is used to indicate a plurality of DBTW lengths, wherein different DBTW lengths in the plurality of DBTW lengths correspond to different numbers of candidate synchronization signal blocks.

[0037] In an embodiment, the physical broadcast channel indication information is used to indicate two DBTW lengths, and the two DBTW lengths are carried in one bit in subcarrier indication information of a physical broadcast channel.

[0038] In an embodiment, the working frequency band comprises a licensed frequency band, or an unlicensed frequency band, or a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed.

[0039] According to a fourth aspect of embodiments of the present disclosure, a discovery signal transmission window DBTW determination apparatus is provided, comprising:

[0040] a processing unit configured to determine a working frequency band according to an initial search procedure; and a communication unit configured to determine a DBTW length used by a terminal in transmitting a synchronization signal block in an initial access procedure based on the working frequency band.

[0041] In an embodiment, in response to the working frequency band being an unlicensed frequency band and a subcarrier spacing being less than a subcarrier spacing threshold, the communication unit determines the DBTW length used by the terminal in transmitting the synchronization signal block in the initial access procedure based on a synchronization signal block index identifier parsed by the initial access.

[0042] In an embodiment, in response to the synchronization signal block index identifier parsed by the initial access procedure being greater than an index identifier threshold, the communication unit determines that the DBTW is not used by the terminal in transmitting the synchronization signal block in the initial access procedure.

[0043] In an embodiment, the communication unit determines that the DBTW is used for transmitting the synchronization signal block in the initial access procedure in response to the synchronization signal block index resolved in the initial access procedure being less than or equal to an index identification threshold.

[0044] In an embodiment, the DBTW length is a default DBTW length.

[0045] In an embodiment, the communication unit is further configured to receive physical broadcast channel indication information, the physical broadcast channel indication information being used to indicate a DBTW length used for transmitting the synchronization signal block in the initial access procedure in the operating frequency band. In response to the operating frequency band being an unlicensed frequency band and the subcarrier spacing being greater than a subcarrier spacing threshold, the communication unit determines the DBTW length used for transmitting the synchronization signal block in the initial access procedure based on the physical broadcast channel indication information.

[0046] In an embodiment, the physical broadcast channel indication information is used to indicate one or more DBTW lengths.

[0047] In an embodiment, different DBTW lengths correspond to different numbers of candidate synchronization signal blocks.

[0048] In an embodiment, the physical broadcast channel indication information is used to indicate that two DBTW lengths are configured, and the two DBTW lengths are carried in one bit in subcarrier indication information of the physical broadcast channel.

[0049] In an embodiment, in response to the operating frequency band being a licensed frequency band, the communication unit determines that the DBTW is not used for transmitting the synchronization signal block in the initial access procedure.

[0050] In an embodiment, in response to the operating frequency band being a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed, the communication unit determines the DBTW length used for transmitting the synchronization signal block in the initial access procedure based on the physical broadcast channel indication information.

[0051] According to a fifth aspect of the embodiments of the present disclosure, a discovery signal transmission window DBTW determination apparatus is provided, including:

[0052] a processor; and a memory for storing processor-executable instructions.

[0053] The processor is configured to perform the DBTW determination method in the first aspect or any one of the embodiments of the first aspect.

[0054] According to a sixth aspect of the embodiments of the present disclosure, a discovery signal transmission window DBTW determination apparatus is provided, including:

[0055] a processor; and a memory for storing processor-executable instructions.

[0056] The processor is configured to perform the DBTW determination method in the second aspect or any one of the implementation forms of the second aspect.

[0057] According to a seventh aspect of the embodiments of the present disclosure, a storage medium is provided, and the storage medium stores instructions. When the instructions in the storage medium are executed by a processor of a network device, the network device can perform the DBTW determination method in the first aspect or any one of the implementation forms of the first aspect.

[0058] According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided, and the storage medium stores instructions. When the instructions in the storage medium are executed by a processor of a terminal, the terminal can perform the DBTW determination method in the second aspect or any one of the implementation forms of the second aspect.

[0059] The technical solution provided by the embodiments of the present disclosure can include the following beneficial effects: determining the working frequency band in the initial access process of the terminal, and determining the DBTW length used by the terminal to transmit the SSB in the initial access process based on the working frequency band in the initial access process of the terminal, so as to determine the DBTW length in the initial access process in the communication frequency band of NR 52.6-71GHz.

[0060] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0061] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure together with the specification.

[0062] Figure 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0063] Figure 2 is a schematic diagram of a spectrum when the subcarrier spacing is 120kHz and the number of transmitted SSBs is 64 according to an exemplary embodiment.

[0064] Figure 3 is a schematic diagram of a spectrum when the subcarrier spacing is 240kHz and the number of transmitted SSBs is 64 according to an exemplary embodiment.

[0065] Figure 4 is a flowchart of a DBTW determination method according to an exemplary embodiment.

[0066] Figure 5is a flow chart of a DBTW determination method according to an exemplary embodiment.

[0067] Figure 6 is a flow chart of a DBTW determination method according to an exemplary embodiment.

[0068] Figure 7 is a flow chart of a DBTW determination method according to an exemplary embodiment.

[0069] Figure 8 is a flow chart of a DBTW determination method according to an exemplary embodiment.

[0070] Figure 9 is a flow chart of a DBTW determination method according to an exemplary embodiment.

[0071] Figure 10 is a flow chart of a DBTW determination method according to an exemplary embodiment.

[0072] Figure 11 is a block diagram of a DBTW determination apparatus according to an exemplary embodiment.

[0073] Figure 12 is a block diagram of a DBTW determination apparatus according to an exemplary embodiment.

[0074] Figure 13 is a block diagram of an apparatus for DBTW determination according to an exemplary embodiment.

[0075] Figure 14 is a block diagram of an apparatus for DBTW determination according to an exemplary embodiment. DETAILED DESCRIPTION

[0076] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements in the several figures. The following description is made with reference to the accompanying drawings in which like reference numerals refer to like elements in the several figures. The following description of exemplary embodiments is not representative of all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0077] The DBTW determination method provided by the embodiments of the present disclosure can be applied to Figure 1 a wireless communication system as shown in FIG. 1. Referring to Figure 1 the wireless communication system includes a terminal and a network device. The terminal is connected to the network device through wireless resources and performs data transmission and reception.

[0078] It can be understood that,Figure 1 The wireless communication system shown is only illustrative, and other network devices such as core network devices, wireless relay devices, and wireless backhaul devices can also be included in the wireless communication system, which are not shown in the figure. The number of network devices and the number of terminals included in the wireless communication system are not limited in the embodiments of the present disclosure. Figure 1

[0079] It can be further understood that the wireless communication system of the embodiments of the present disclosure is a network that provides wireless communication functions. The wireless communication system can use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single Carrier FDMA (SC-FDMA), carrier sense multiple access with collision avoidance (CSMA / CA). Depending on the capacity, rate, latency, and other factors of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network, or future evolution network such as 5G network. The 5G network can also be referred to as a new radio network (New Radio, NR). For the convenience of description, the wireless communication network is sometimes referred to as a network in the present disclosure.

[0080] ​Further, the network device involved in the present disclosure can also be referred to as a wireless access network device. The wireless access network device can be a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc., and can also be a gNB in an NR system, or can also be a component or a part of a device constituting a base station, etc. When it is a vehicle-to-everything (V2X) communication system, the network device can also be a vehicle-mounted device. It should be understood that the specific technology and specific device form adopted by the network device in the embodiments of the present disclosure are not limited.

[0081] Further, the terminal involved in the present disclosure can also be referred to as a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity for a user. For example, the terminal can be a handheld device with wireless connectivity, a vehicle-mounted device, etc. At present, some examples of the terminal are: a mobile phone, a pocket personal computer (PPC), a palm computer, a personal digital assistant (PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be a vehicle-mounted device. It should be understood that the specific technology and specific device form adopted by the terminal in the embodiments of the present disclosure are not limited.

[0082] In new radio technology (NR), the terminal and the network device support a frequency range 2 (FR2) 7.126-52.6 communication frequency band. In 5G FR2 (7.126-52.6), data uses two subcarrier spacings of 120 kHz / 60 kHz, and SSB uses two subcarrier spacings of 240 kHz / 120 kHz.

[0083] In future communication technology, the communication frequency band used by the terminal and the network device when communicating will support a higher communication frequency band than the FR2 (7.126-52.6) supported by the 5G new radio technology (NR). For example, 52.6 GHz-71 GHz is supported.

[0084] For the communication frequency band of NR 52.6-71GHz, the terminal supports discovery signal transmission and initial access based on the initial search procedure. In the related art, for the communication frequency band of NR 52.6-71GHz, the same DB transmission mode as Rel-16 37.213 Section 4.0 is defined. For example, at least the DBTW configuration of SSB with 120kHz SCS is supported. Among them, the DBTW configuration includes that the payload size of the physical broadcast channel (PBCH) is not greater than the payload of the PBCH in FR2, the DBTW time is not greater than 5ms, and the number of PBCH DMRS sequences is the same as that in FR2.

[0085] Among them, the communication frequency band of NR 52.6-71GHz is suitable for the DBTW design of 120kHz to SSB, and has 480kHz and 960kHz SCS, and supports the prompting or notification mechanism of enabling / disabling DBTW for terminals in idle state and connected state.

[0086] In the related art, in order to improve transmission reliability, candidate SSB (candidate SSB) can be set. In FR2 (7.126~52.6), candidate SSB positions can be provided. Referring to the drawings shown in Figure 2 and Figure 3 . Figure 2 The frequency spectrum diagram when the subcarrier spacing is 120kHz and the number of transmitted SSBs is 64 is shown. Figure 3 The frequency spectrum diagram when the subcarrier spacing is 240kHz and the number of transmitted SSBs is 64 is shown.

[0087] For NR 52.6-71GHz, a larger subcarrier spacing should be used, but 120 can also be used, which results in more combinations. In the case of 120kHz, the default DBTW length (5ms) transmits 64 SSBs, or more than 32 SSBs, and there is no candidate SSB position. In the case of NR 52.6-71GHz, DBTW is not required for licensed frequency bands, and DBTW is required for unlicensed frequency bands, and new SCS SSBs such as 480 / 960kHz are added. For new SCS, the DBTW does not need to be configured for 5ms, and can be shorter. For initial access, signaling configuration is not available, and a method for determining DBTW is required.

[0088] The embodiment of the present disclosure provides a DBTW determination method. The DBTW determination method is used for determining a DBTW length used by a terminal for transmitting an SSB in an initial access process based on a working frequency band in the initial access process, so as to determine the DBTW length in the initial access process in a communication frequency band of NR 52.6-71 GHz.

[0089] In an embodiment, the embodiment of the present disclosure can explicitly indicate the DBTW length used by the terminal in the initial access process. In an example, the DBTW length is indicated by PBCH. In another embodiment, the embodiment of the present disclosure can implicitly indicate the DBTW length used by the terminal in the initial access process.

[0090] Figure 4 FIG. 1 is a flowchart of a DBTW determination method according to an example embodiment. Figure 4 As shown in FIG. 1, the DBTW determination method is used in a network device, and includes the following steps.

[0091] In step S11, a working frequency band in an initial access process of a terminal is determined, and a DBTW length used by the terminal for transmitting an SSB in the initial access process in the determined working frequency band is determined.

[0092] In step S12, the determined DBTW length is transmitted.

[0093] In the embodiment of the present disclosure, the network device determines a working frequency band in an initial access process of a terminal, specifically, transmits a signal in the working frequency band. The terminal searches for the signal through an initial search procedure, and determines the working frequency band in the initial access process of the terminal according to the signal. Moreover, after the network device determines the working frequency band of the terminal, the network device can determine and transmit a DBTW length used by the terminal for transmitting an SSB in the initial access process in the working frequency band. After the terminal receives the DBTW length transmitted by the network device, the terminal can determine the DBTW length used in the initial access process, and thus determine the DBTW length in the initial access process in a communication frequency band of NR 52.6-71 GHz.

[0094] In the embodiment of the present disclosure, the network device transmits the determined DBTW length to the terminal, and the transmission can be based on indication information.

[0095] In an example, the network device transmits PBCH indication information, and the PBCH indication information is used for indicating the DBTW length.

[0096] In the embodiment of the present disclosure, the working frequency band in the initial access process of the terminal determined by the network device includes a licensed frequency band, or an unlicensed frequency band, or a frequency band in which the licensed frequency band and the unlicensed frequency band are multiplexed.

[0097] In the embodiments of the present disclosure, in one aspect, the DBTW length does not need to be indicated in the case that the operating frequency band in the initial access process of the terminal is a licensed frequency band. In another aspect, the DBTW length is indicated in the case that the operating frequency band in the initial access process of the terminal is an unlicensed frequency band, or the operating frequency band is a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed.

[0098] In the case that the operating frequency band of the terminal determined by the network device is an unlicensed frequency band, the DBTW length can be determined based on the SCS.

[0099] In the embodiments of the present disclosure, in response to the operating frequency band of the terminal determined by the network device being an unlicensed frequency band and the subcarrier spacing being greater than the subcarrier spacing threshold, it is determined that the DBTW length is indicated by the PBCH indication information.

[0100] In one example, in the embodiments of the present disclosure, for the initial access of 480 / 960 kHz SCS, the DBTW length is indicated by the PBCH indication information.

[0101] In the embodiments of the present disclosure, the specific value of the DBTW length indicated by the PBCH indication information is, for example, 5 ms, 2.5 ms, and the like.

[0102] In one implementation of the embodiments of the present disclosure, the PBCH can indicate one or more DBTW lengths.

[0103] In the case that the PBCH indicates multiple DBTW lengths, different DBTW lengths in the multiple DBTW lengths are configured with different numbers of candidate synchronization signal blocks (candidate SSBs).

[0104] In the DBTW determination method provided by the embodiments of the present disclosure, in the case that the DBTW length is indicated by the PBCH indication information, the DBTW length can be indicated by a bit indication manner.

[0105] In the embodiments of the present disclosure, if the PBCH indication information indicates two DBTW lengths, for example, the DBTW lengths are 5 ms and 2.5 ms, the two DBTW lengths can be carried in one bit of the SCS of the PBCH.

[0106] In one example, the PBCH indicates a specific DBTW length (5, 2.5 ms), and different DBTW configurations correspond to different numbers of candidates. Further, since many operators support single SCS operation of SSB and data for 480 / 960 kHz SCS, the DBTW length (5, 2.5 ms) can be indicated by one bit of the SCS in the PBCH.

[0107] In the embodiments of the present disclosure, when the terminal operating frequency band is an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold, the length of the DBTW can be indicated in a hidden manner. For example, the default DBTW length is used.

[0108] In an example, for initial access of 120 kHz / 240 kHz SCS, 5 ms is configured as the default length of the DBTW in a hidden manner.

[0109] In the embodiments of the present disclosure, the network device indicates the length of the DBTW through PBCH indication information, so that the terminal determines the length of the DBTW used in the initial access process based on the PBCH indication information.

[0110] The embodiments of the present disclosure provide a DBTW determination method applied to a terminal. In the DBTW determination method, the terminal determines an operating frequency band according to an initial search procedure, and determines the length of the DBTW used for transmitting an SSB in an initial access process based on the determined operating frequency band, so that the length of the DBTW in the initial access process can be determined in a communication frequency band of NR 52.6-71 GHz.

[0111] Figure 5 FIG. 1 is a flowchart of a DBTW determination method according to an example embodiment. Figure 5 As shown in FIG. 1, the DBTW determination method is applied to a terminal, and includes the following steps.

[0112] In step S21, an operating frequency band is determined according to an initial search procedure.

[0113] In the embodiments of the present disclosure, the initial search procedure is used to search for a signal transmitted by a network device. The terminal searches for the signal transmitted by the network device according to the initial search procedure, and then determines an operating frequency band used in an initial access process of the terminal.

[0114] In step S22, the length of the DBTW used for transmitting an SSB in an initial access process is determined based on the determined operating frequency band.

[0115] In the embodiments of the present disclosure, the terminal can search for a signal transmitted by a network device on the determined operating frequency band through the initial search procedure, and then determine an operating frequency band in an initial access process of the terminal. In addition, the terminal can determine the length of the DBTW used in the initial access process, so that the length of the DBTW in the initial access process can be determined in a communication frequency band of NR 52.6-71 GHz.

[0116] In the embodiments of the present disclosure, the operating frequency band determined by the terminal according to the initial search procedure can include an authorized frequency band, or an unlicensed frequency band, or a frequency band multiplexed with the authorized frequency band and the unlicensed frequency band.

[0117] In an embodiment, when the terminal operating frequency band is an unlicensed frequency band, the DBTW length can be determined based on the SCS.

[0118] In an embodiment of the present disclosure, when the terminal operating frequency band is an unlicensed frequency band and the subcarrier spacing is greater than the subcarrier spacing threshold, the DBTW length used for transmitting SSB in the initial access procedure can be determined based on the DBTW length sent by the network device.

[0119] In an example, in an embodiment of the present disclosure, the terminal can determine the DBTW length used for transmitting SSB in the initial access procedure based on the indication information sent by the network device for indicating the DBTW length.

[0120] For example, in an embodiment of the present disclosure, the DBTW length used for transmitting SSB in the initial access procedure can be determined based on the PBCH indication information.

[0121] Figure 6 is a flowchart of a DBTW determination method according to an example embodiment, as shown in Figure 6 The DBTW determination method is used in a terminal and includes the following steps.

[0122] In step S31, PBCH indication information is received, and the PBCH indication information is used to indicate the DBTW length used for transmitting SSB in the initial access procedure of the terminal in the determined operating frequency band.

[0123] In step S32, in response to the operating frequency band being an unlicensed frequency band and the subcarrier spacing being greater than the subcarrier spacing threshold, the DBTW length used for transmitting SSB in the initial access procedure is determined based on the PBCH indication information.

[0124] In an example, in an embodiment of the present disclosure, for the initial access of 480 / 960 kHz SCS, the terminal can determine the DBTW length based on the PBCH indication information.

[0125] In an embodiment of the present disclosure, the PBCH indication information indicates the specific value of the DBTW length, such as indicating that the DBTW length is 5 ms, 2.5 ms, etc.

[0126] In an embodiment of the present disclosure, the PBCH can indicate one or more DBTW lengths.

[0127] When the PBCH indicates multiple DBTW lengths, different DBTW lengths in the multiple DBTW lengths are configured with different numbers of candidate SSBs.

[0128] In the DBTW determination method provided in this embodiment, when the DBTW length is indicated by PBCH indication information, it can be indicated by bit indication.

[0129] In this embodiment of the disclosure, if the PBCH indication information indicates two DBTW lengths, for example, indicating DBTW lengths of 5ms and 2.5ms, then the two DBTW lengths can be carried in one bit of the SCS of the PBCH.

[0130] In one example, the PBCH indicates the specific DBTW length (5, 2.5ms), and different DBTW configurations correspond to different numbers of candidates. Furthermore, since many operators support single SCS operation for SSB and data for 480 / 960kHz SCS, one bit of the SCS in the PBCH can be used to indicate the aforementioned DBTW length (5, 2.5ms).

[0131] When the terminal operates in an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold, an implicit indication method can be used to indicate the DBTW length. For example, the default DBTW length can be used.

[0132] In one example, for initial access to a 120k / 240kHz SCS, implicitly 5ms is used as the default configuration for the DBTW length.

[0133] In this embodiment of the disclosure, in response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold, the DBTW length used for transmitting SSBs during the initial access process is determined based on the SSB index identifier (SSB ID) resolved during the initial access, so as to avoid the situation where there is no candidate SSB position.

[0134] Figure 7 This is a flowchart illustrating a DBTW determination method according to an exemplary embodiment, such as... Figure 7 As shown, the DBTW determination method is used in the terminal and includes the following steps.

[0135] In step S41, it is determined that the working frequency band is an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold.

[0136] In step S42, the DBTW length used for transmitting SSBs during the initial access process is determined based on the SSB index identifier resolved during the initial access.

[0137] In the DBTW determination method provided by the embodiment of the present disclosure, on one hand, if the SSB index identifier parsed in the initial access process is greater than the index identifier threshold, it is determined that the SSB transmitted in the initial access process does not use DBTW, so as to avoid the case that there is no candidate SSB position, and improve the reliability of communication transmission.

[0138] Figure 8 Fig. 4 is a flowchart of a DBTW determination method according to an example embodiment, as shown in the figure, the DBTW determination method is used in a terminal, and includes the following steps. Figure 8

[0139] In step S51, it is determined that the working frequency band is an unlicensed frequency band, and the subcarrier spacing is less than the subcarrier spacing threshold.

[0140] In step S52, in response to the SSB index identifier parsed in the initial access process being greater than the index identifier threshold, it is determined that the SSB transmitted in the initial access process does not use DBTW.

[0141] For example, for the initial access of 120 kHz SCS, if the SSB ID parsed by the terminal in the initial access is greater than the index identifier threshold (such as 32), it can be implicitly indicated that DBTW is not used.

[0142] In the DBTW determination method provided by the embodiment of the present disclosure, on one hand, in response to the SSB index identifier parsed in the initial access process being less than or equal to the index identifier threshold, it is determined that the SSB transmitted in the initial access process uses DBTW.

[0143] Figure 9 Fig. 4 is a flowchart of a DBTW determination method according to an example embodiment, as shown in the figure, the DBTW determination method is used in a terminal, and includes the following steps. Figure 9

[0144] In step S61, it is determined that the working frequency band is an unlicensed frequency band, and the subcarrier spacing is less than the subcarrier spacing threshold.

[0145] In step S62, in response to the SSB index identifier parsed in the initial access process being less than or equal to the index identifier threshold, it is determined that the SSB transmitted in the initial access process uses DBTW.

[0146] In the case that the SSB index identifier parsed in the initial access process is less than or equal to the index identifier threshold, the DBTW length used by the SSB transmitted in the initial access process is the default DBTW length. For example, it can be 5 ms.

[0147] ​​In the embodiments of the present disclosure, DBTW is generally not required to be used in the case that the operating frequency band in the initial access process of the terminal is a licensed frequency band.

[0148] In the embodiments of the present disclosure, DBTW can be used or not used in the case that the operating frequency band in the initial access process of the terminal is a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed.

[0149] In an example, in the case that the operating frequency band in the initial access process of the terminal is a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed, if the terminal receives PBCH indication information used to indicate the length of DBTW, it is determined that DBTW is used, and the length of DBTW used for transmitting SSB in the initial access process can be determined based on the PBCH indication information.

[0150] Figure 10 is a flowchart of a DBTW determination method according to an example embodiment, as shown in Figure 10 The DBTW determination method is used in a terminal and includes the following steps.

[0151] In step S71, it is determined that the operating frequency band in the initial access process is a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed.

[0152] In step S72, the length of DBTW used for transmitting SSB in the initial access process is determined based on the PBCH indication information.

[0153] In the embodiments of the present disclosure, in the case that the operating frequency band in the initial access process is a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed, the length of DBTW used for transmitting SSB in the initial access process can be determined based on the PBCH indication information in the manner described in the above embodiments. For example, the PBCH indication information indicates the specific value of the length of DBTW, such as indicating that the length of DBTW is 5 ms, 2.5 ms, etc.

[0154] In an example implementation of the embodiments of the present disclosure, the PBCH can indicate one or more lengths of DBTW.

[0155] When the PBCH indicates multiple lengths of DBTW, different lengths of DBTW in the multiple lengths of DBTW are correspondingly configured with different numbers of candidate SSBs.

[0156] In the DBTW determination method provided by the embodiments of the present disclosure, when the PBCH indication information is used to indicate the length of DBTW, the length of DBTW can be indicated in the manner of bit indication.

[0157] In the embodiments of the present disclosure, if the PBCH indication information indicates two DBTW lengths, for example, indicates that the DBTW lengths are 5 ms and 2.5 ms, the two DBTW lengths can be carried in one bit of the SCS of the PBCH.

[0158] The DBTW determination method provided by the embodiments of the present disclosure realizes the implicit determination or explicit determination of the terminal for the DBTW length in the initial access process.

[0159] It can be understood that the DBTW determination method provided by the embodiments of the present disclosure is applicable to the process of realizing the determination of the DBTW length in the initial access process in the communication frequency band of NR 52.6-71 GHz through the interaction between the network device and the terminal. The process of realizing the determination of the DBTW length in the initial access process in the communication frequency band of NR 52.6-71 GHz through the interaction between the network device and the terminal will not be described in detail in the embodiments of the present disclosure.

[0160] It should be noted that those skilled in the art can understand that the various embodiments / embodiments described above in the embodiments of the present disclosure can be used in combination with the foregoing embodiments, or can be used independently. Whether it is used independently or in combination with the foregoing embodiments, the implementation principle is similar. In the embodiments of the present disclosure, some embodiments are described as embodiments used together. Of course, those skilled in the art can understand that such example descriptions are not a limitation of the embodiments of the present disclosure.

[0161] Based on the same concept, the embodiments of the present disclosure also provide a DBTW determination apparatus.

[0162] It can be understood that the DBTW determination apparatus provided by the embodiments of the present disclosure comprises a hardware structure and / or a software module corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

[0163] Figure 11 is a DBTW determination apparatus block diagram according to an exemplary embodiment. Referring to Figure 11 , the DBTW determination apparatus 100 is applied to a network device, comprising a processing unit 101 and a sending unit 102.

[0164] The processing unit 101 is configured to determine a working frequency band in a terminal initial access procedure, and determine a DBTW length used by the terminal in transmitting an SSB in the initial access procedure in the working frequency band. The sending unit 102 is configured to send the DBTW length.

[0165] In an embodiment, the sending unit 102 is configured to send PBCH indication information, the physical broadcast indication information being used to indicate the DBTW length.

[0166] In an embodiment, the PBCH indication information is used to indicate one or more DBTW lengths.

[0167] In an embodiment, the PBCH indication information is used to indicate a plurality of DBTW lengths, wherein different DBTW lengths in the plurality of DBTW lengths correspond to being configured with different numbers of candidate SSBs.

[0168] In an embodiment, the PBCH indication information is used to indicate two DBTW lengths, the two DBTW lengths being carried in one bit in subcarrier indication information of the PBCH.

[0169] In an embodiment, the working frequency band includes a licensed frequency band, or an unlicensed frequency band, or a frequency band in which the licensed frequency band and the unlicensed frequency band are multiplexed.

[0170] Figure 12 is a DBTW determination apparatus block diagram according to an exemplary embodiment. Referring to Figure 12 , the DBTW determination apparatus 200 is applied to a terminal and includes a processing unit 201 and a communication unit 202.

[0171] The processing unit 201 is configured to determine a working frequency band according to an initial search procedure. The communication unit 202 is configured to determine a DBTW length used by an SSB in an initial access procedure based on the working frequency band.

[0172] In an embodiment, in response to the working frequency band being an unlicensed frequency band and a subcarrier spacing being less than a subcarrier spacing threshold, the communication unit 202 determines the DBTW length used by the SSB in the initial access procedure based on an SSB index identifier parsed in the initial access.

[0173] In an embodiment, in response to the SSB index identifier parsed in the initial access procedure being greater than an index identifier threshold, the communication unit 202 determines that the SSB in the initial access procedure does not use the DBTW.

[0174] In an embodiment, in response to the SSB index identifier parsed in the initial access procedure being less than or equal to the index identifier threshold, the communication unit 202 determines that the SSB in the initial access procedure uses the DBTW.

[0175] In an embodiment, the DBTW length is a default DBTW length.

[0176] In an embodiment, the communication unit 202 is further configured to receive PBCH indication information, the PBCH indication information being used to indicate a DBTW length used by the terminal to transmit SSB in an initial access procedure in the operating frequency band. In response to the operating frequency band being an unlicensed frequency band and the subcarrier spacing being greater than the subcarrier spacing threshold, the communication unit 202 determines the DBTW length used by the terminal to transmit SSB in the initial access procedure based on the PBCH indication information.

[0177] In an embodiment, the PBCH indication information is used to indicate one or more DBTW lengths.

[0178] In an embodiment, different DBTW lengths correspond to different numbers of candidate SSBs.

[0179] In an embodiment, the PBCH indication information is used to indicate that two DBTW lengths are configured, and the two DBTW lengths are carried in one bit in the subcarrier indication information of the PBCH.

[0180] In an embodiment, in response to the operating frequency band being a licensed frequency band, the communication unit 202 determines that no DBTW is used by the terminal to transmit SSB in the initial access procedure.

[0181] In an embodiment, in response to the operating frequency band being a frequency band in which a licensed frequency band and an unlicensed frequency band are multiplexed, the communication unit 202 determines the DBTW length used by the terminal to transmit SSB in the initial access procedure based on the PBCH indication information.

[0182] As to the apparatus in the above-mentioned embodiments, specific manners in which various modules perform operations have been described in details in the embodiments about the method, and thus will not be described in details here.

[0183] Figure 13 is a block diagram of an apparatus 300 for DBTW determination according to an exemplary embodiment. The apparatus 300 can be a mobile phone, computer, digital broadcast terminal, messaging device, gaming console, tablet device, medical device, fitness device, personal digital assistant, or the like, for example.

[0184] Referring to Figure 13 , the apparatus 300 can include one or more of the following components: a processing component 302, a memory 304, a power supply component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0185] The processing component 302 generally controls the overall operations of the device 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 302 can include one or more processors 320 to execute instructions delivered from the memory 304 to complete all or part of the steps of the methods described above. In addition, the processing component 302 can include one or more modules to facilitate the interaction between the processing component 302 and other components. For example, the processing component 302 can include a multimedia module to facilitate the interaction between the multimedia component 308 and the processing component 302.

[0186] The memory 304 is configured to store various types of data to support the operations of the device 300. Examples of these data include instructions for any application or method operating on the device 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0187] The power component 306 provides power to the various components of the device 300. The power component 306 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 300.

[0188] The multimedia component 308 includes a screen providing an output interface between the device 300 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensors can not only sense a boundary of a touching or sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 308 includes a front camera and / or a back camera. The front camera and / or the back camera can receive external multimedia data when the device 300 is in an operation mode, such as a shooting mode or a video mode. Each of the front and back cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0189] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) that is configured to receive an external audio signal when the device 300 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 also includes a speaker for outputting audio signals.

[0190] The I / O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which can include a keypad, a click wheel, buttons, and so on. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0191] The sensor component 314 includes one or more sensors for providing status assessments of various aspects of the device 300. For example, the sensor component 314 can detect an open / closed position of the device 300, relative positioning of components, such as a display and a keypad of the device 300, a change of position of the device 300 or a component of the device 300, presence or absence of user contact with the device 300, changes in orientation or acceleration / deceleration

[0192] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network based on a corresponding communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an example embodiment, the communication component 316 receives broadcast signals or broadcast-related information from external broadcast management systems via a broadcast channel. In an example embodiment, the communication component 316 also includes a Near Field Communication (NFC) module to promote short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0193] In exemplary embodiments, the apparatus 300 can be implemented using one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic devices, to perform the above methods.

[0194] In exemplary embodiments, a non-transitory computer readable storage medium including instructions, such as the memory 304 including instructions, is also provided, which can be executed by the processor 320 of the apparatus 300 to complete the above methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0195] Figure 14 is a block diagram of an apparatus 400 for DBTW determination according to an exemplary embodiment. For example, the apparatus 400 can be provided as a server. Referring to Figure 14 , the apparatus 400 includes a processing component 422, which further includes one or more processors, and a memory resource represented by the memory 432, for storing instructions, such as application programs, executable by the processing component 422. The application programs stored in the memory 432 can include one or more than one module each corresponding to a set of instructions. In addition, the processing component 422 is configured to execute the instructions to perform the above methods.

[0196] The apparatus 400 can also include a power supply component 426 configured to perform power management of the apparatus 400, a wired or wireless network interface 450 configured to connect the apparatus 400 to a network, and an input output (I / O) interface 458. The apparatus 400 can operate based on an operating system stored in the memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[0197] In exemplary embodiments, a non-transitory computer readable storage medium including instructions, such as the memory 432 including instructions, is also provided, which can be executed by the processing component 422 of the apparatus 400 to complete the above methods. For example, the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0198] It should be further understood that the term "a plurality" herein means two or more, and it should be similarly understood that the term "another" herein means at least a second or more. The terms "including", "comprising", "having" and the like are meant to be inclusive and mean that there can be additional elements other than the listed elements. The use of "an" or "one" to refer to an element or a feature also means that a specific singular is not to be inferred unless explicitly so stated or the use is explicitly one of the equivalents of "another". The terms "first", "second" and the like can be used to describe various information, and do not imply an order or significance, but are used only to distinguish one element from another. In the specification, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action, without necessarily implying any actual relationship or order or importance between the entities or actions. In the specification, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. The terms "comprise", "comprising", "include", "including", and the like are used herein to mean including but not limited to.

[0199] It should be further understood that the term "a plurality" herein means two or more, and it should be similarly understood that the term "another" herein means at least a second or more. The terms "including", "comprising", "having" and the like are meant to be inclusive and mean that there can be additional elements other than the listed elements. The use of "an" or "one" to refer to an element or a feature also means that a specific singular is not to be inferred unless explicitly so stated or the use is explicitly one of the equivalents of "another". The terms "first", "second" and the like can be used to describe various information, and do not imply an order or significance, but are used only to distinguish one element from another. In the specification, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action, without necessarily implying any actual relationship or order or importance between the entities or actions. In the specification, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. The terms "comprise", "comprising", "include", "including", and the like are used herein to mean including but not limited to.

[0200] It should be further understood that the term "a plurality" herein means two or more, and it should be similarly understood that the term "another" herein means at least a second or more. The terms "including", "comprising", "having" and the like are meant to be inclusive and mean that there can be additional elements other than the listed elements. The use of "an" or "one" to refer to an element or a feature also means that a specific singular is not to be inferred unless explicitly so stated or the use is explicitly one of the equivalents of "another". The terms "first", "second" and the like can be used to describe various information, and do not imply an order or significance, but are used only to distinguish one element from another. In the specification, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action, without necessarily implying any actual relationship or order or importance between the entities or actions. In the specification, the singular forms "a", "an" and "the" include plural references unless the context clearly dictates otherwise. The terms "comprise", "comprising", "include", "including", and the like are used herein to mean including but not limited to.

[0201] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the present disclosure cover any and all variations of the application that come within the scope of the following claims and their equivalents. It is intended that the specification and examples be considered exemplary only, with the true scope and spirit of the application indicated by the following claims.

[0202] It should be understood that the present disclosure is not limited to the precise construction herein described and illustrated and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A method for determining the DBTW (Derivative Transmission Window) of a signal, characterized in that, Applied to network devices, the DBTW determination method includes: Determine the operating frequency band during the initial access process of the terminal, and determine the DBTW length used by the terminal to transmit the synchronization signal block during the initial access process in the operating frequency band; Send physical broadcast channel indication information, the physical broadcast indication information being used to indicate the DBTW length; The physical broadcast channel indication information is used to indicate multiple DBTW lengths, wherein different DBTW lengths correspond to different numbers of candidate synchronization signal blocks; The operating frequency band includes licensed frequency bands, unlicensed frequency bands, or frequency bands that reuse licensed and unlicensed frequency bands; In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold, the DBTW length used to transmit the synchronization signal block during the initial access process is determined based on the synchronization signal block index identifier resolved during the initial access. In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is greater than the subcarrier spacing threshold, the DBTW length used for transmitting the synchronization signal block during the initial access process is determined based on the physical broadcast channel indication information. Since the operating frequency band is a licensed frequency band, DBTW is not used in the transmission of synchronization signal blocks during the initial access process. In response to the fact that the operating frequency band is a frequency band that is shared by licensed and unlicensed frequency bands, the DBTW length used for transmitting synchronization signal blocks during the initial access process is determined based on the physical broadcast channel indication information.

2. The DBTW determination method according to claim 1, characterized in that, The physical broadcast channel indication information is used to indicate the lengths of the two DBTWs, which are carried in one bit of the subcarrier indication information of the physical broadcast channel.

3. A method for determining the signal transmission window DBTW, characterized in that, When applied to a terminal, the DBTW determination method includes: The operating frequency band is determined based on the initial search procedure; Based on the operating frequency band, determine the DBTW length used for transmitting the synchronization signal block during the initial access process; Receive physical broadcast channel indication information, which is used to indicate the DBTW length used by the terminal to transmit synchronization signal blocks during the initial access process of the terminal in the operating frequency band; The physical broadcast channel indication information is used to indicate multiple DBTW lengths, wherein different DBTW lengths correspond to different numbers of candidate synchronization signal blocks; The operating frequency band includes licensed frequency bands, unlicensed frequency bands, or frequency bands that reuse both licensed and unlicensed frequency bands. Determining the DBTW length used for transmitting the synchronization signal block during the initial access process based on the operating frequency band includes: In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold, the DBTW length used to transmit the synchronization signal block during the initial access process is determined based on the synchronization signal block index identifier resolved during the initial access. In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is greater than the subcarrier spacing threshold, the DBTW length used for transmitting the synchronization signal block during the initial access process is determined based on the physical broadcast channel indication information. Since the operating frequency band is a licensed frequency band, DBTW is not used in the transmission of synchronization signal blocks during the initial access process. In response to the fact that the operating frequency band is a frequency band that is shared by licensed and unlicensed frequency bands, the DBTW length used for transmitting synchronization signal blocks during the initial access process is determined based on the physical broadcast channel indication information.

4. The DBTW determination method according to claim 3, characterized in that, Based on the synchronization signal block index identifier resolved during the initial access process, the DBTW length used for transmitting the synchronization signal block during the initial access process is determined, including: If the index identifier of the synchronization signal block resolved during the initial access process is greater than the index identifier threshold, it is determined that DBTW is not used when transmitting the synchronization signal block during the initial access process.

5. The DBTW determination method according to claim 3, characterized in that, Based on the synchronization signal block index identifier resolved during the initial access process, the DBTW length used for transmitting the synchronization signal block during the initial access process is determined, including: In response to the synchronization signal block index identifier being less than or equal to the index identifier threshold resolved during the initial access process, it is determined that DBTW is used to transmit the synchronization signal block during the initial access process.

6. The DBTW determination method according to claim 3, characterized in that, The physical broadcast channel indication information is used to indicate the configuration of two DBTW lengths, which are carried in one bit of the physical broadcast channel subcarrier indication information.

7. A device for determining the DBTW (Derivative Broadcast Window) of a signal transmission window, characterized in that, The DBTW determination device, applied to network equipment, includes: The processing unit is configured to determine the operating frequency band during the initial access process of the terminal, and to determine the DBTW length used by the terminal to transmit the synchronization signal block during the initial access process in the operating frequency band. The transmitting unit is configured to transmit physical broadcast channel indication information, which is used to indicate the DBTW length; The physical broadcast channel indication information is used to indicate multiple DBTW lengths, wherein different DBTW lengths correspond to different numbers of candidate synchronization signal blocks; The operating frequency band includes licensed frequency bands, unlicensed frequency bands, or frequency bands that reuse licensed and unlicensed frequency bands; In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold, the DBTW length used to transmit the synchronization signal block during the initial access process is determined based on the synchronization signal block index identifier resolved during the initial access. In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is greater than the subcarrier spacing threshold, the DBTW length used for transmitting the synchronization signal block during the initial access process is determined based on the physical broadcast channel indication information. Since the operating frequency band is a licensed frequency band, DBTW is not used in the transmission of synchronization signal blocks during the initial access process. In response to the fact that the operating frequency band is a frequency band that is shared by licensed and unlicensed frequency bands, the DBTW length used for transmitting synchronization signal blocks during the initial access process is determined based on the physical broadcast channel indication information.

8. A device for determining the DBTW (Derivative Broadcast Window) of a signal transmission window, characterized in that, include: The processing unit is configured to determine the operating frequency band based on the initial search procedure; The communication unit is configured to determine the DBTW length used for transmitting synchronization signal blocks during the initial access process based on the operating frequency band; and to receive physical broadcast channel indication information, which is used to indicate the DBTW length used by the terminal for transmitting synchronization signal blocks during the initial access process in the operating frequency band. The physical broadcast channel indication information is used to indicate multiple DBTW lengths, wherein different DBTW lengths correspond to different numbers of candidate synchronization signal blocks; The operating frequency band includes licensed frequency bands, unlicensed frequency bands, or frequency bands that reuse both licensed and unlicensed frequency bands. Determining the DBTW length used for transmitting the synchronization signal block during the initial access process based on the operating frequency band includes: In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is less than the subcarrier spacing threshold, the DBTW length used to transmit the synchronization signal block during the initial access process is determined based on the synchronization signal block index identifier resolved during the initial access. In response to the fact that the operating frequency band is an unlicensed frequency band and the subcarrier spacing is greater than the subcarrier spacing threshold, the DBTW length used for transmitting the synchronization signal block during the initial access process is determined based on the physical broadcast channel indication information. Since the operating frequency band is a licensed frequency band, DBTW is not used in the transmission of synchronization signal blocks during the initial access process. In response to the fact that the operating frequency band is a frequency band that is shared by licensed and unlicensed frequency bands, the DBTW length used for transmitting synchronization signal blocks during the initial access process is determined based on the physical broadcast channel indication information.

9. A device for determining the DBTW (Derivative Broadcast Window) of a signal transmission window, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to: execute the DBTW determination method according to any one of claims 1 to 2, or execute the DBTW determination method according to any one of claims 3 to 6.

10. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the processor of a network device, enable the network device to perform the DBTW determination method according to any one of claims 1 to 2, or, when executed by the processor of a terminal, enable the terminal to perform the DBTW determination method according to any one of claims 3 to 6.

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