Synchronization signal block (SSB) transmission method, terminal equipment and network equipment

Abstract

The embodiment of the invention provides a transmission method of a synchronization signal block (SSB), terminal equipment, network equipment and a computer readable storage medium, which are used for enabling an SSB or an SSB index corresponding to a beam in an SSB burst set of high frequency to be sent through at least one of a plurality of candidate SSB positions after a QCL relation indication is introduced into the high frequency. Therefore, more SSB transmission opportunities can be provided in the network, and the initial access and measurement performance of the terminal equipment is improved. The embodiments of the present invention may comprise: a terminal device determining an SSB burst set, the SSB burst set comprising N candidate SSB positions, each candidate SSB position in the N candidate SSB positions corresponding to a candidate SSB index, N being an integer greater than 20; and the terminal device determines a quasi co-location QCL relationship of the N candidate SSB indexes according to the first indication information.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a synchronization signal block (SSB) transmission method, terminal equipment, network equipment, and a computer-readable storage medium. Background Art

[0002] When the new radio (NR) system is deployed in high frequency, since the FRX band includes both non-shared spectrum and shared spectrum, the synchronization signal block (SSB) transmission on the shared spectrum may require multiple candidate locations so that the network device can perform SSB transmission through at least one of the multiple candidate locations after the Listen Before Talk (LBT) is successful. Since the high frequency includes 64 SSBs, or even more SSBs may be introduced, such as 128 SSBs, in this scenario, how to define the quasi co-location (QCL) relationship of SSB is an issue that needs to be discussed. Summary of the invention

[0003] The embodiments of the present invention provide a synchronization signal block (SSB) transmission method, a terminal device, a network device, and a computer-readable storage medium, which are used to introduce a QCL relationship indication in a high frequency so that, in a high-frequency SSB burst set, an SSB or SSB index corresponding to a beam can be sent through at least one of a plurality of candidate SSB positions, thereby allowing more SSB transmission opportunities in the network and improving the initial access and measurement performance of the terminal device.

[0004] In view of this, a first aspect of an embodiment of the present invention provides a method for transmitting a synchronization signal block SSB, which may include: a terminal device determines an SSB burst set, the SSB burst set includes N candidate SSB positions, each candidate SSB position in the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; the terminal device determines a quasi-co-location QCL relationship of the N candidate SSB indexes according to the first indication information.

[0005] A second aspect of an embodiment of the present invention provides a method for transmitting a synchronization signal block SSB, which may include: a network device sends first indication information to a terminal device, the first indication information is used to determine a quasi-co-location QCL relationship of N candidate SSB indexes, the N candidate SSB indexes correspond to N candidate SSB positions in an SSB burst set, and N is an integer greater than 20.

[0006] On the other hand, an embodiment of the present invention provides a terminal device, which has the function of introducing a QCL relationship indication in a high frequency, so that the SSB or SSB index corresponding to a beam in the SSB burst set of the high frequency can be sent through at least one of multiple candidate SSB positions, so that there can be more SSB transmission opportunities in the network, and the performance of initial access and measurement of the terminal device is improved. This function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0007] On the other hand, an embodiment of the present invention provides a network device, which has the function of introducing a QCL relationship indication in a high frequency, so that in a high frequency SSB burst set, an SSB or SSB index corresponding to a beam can be sent through at least one of a plurality of candidate SSB positions, so that there are more SSB transmission opportunities in the network, and the performance of initial access and measurement of terminal equipment is improved. This function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0008] Another aspect of an embodiment of the present invention provides a terminal device, comprising: a memory storing executable program code; a processor and a transceiver coupled to the memory; the processor and the transceiver are used to execute the method described in the first aspect of the embodiment of the present invention.

[0009] Another aspect of an embodiment of the present invention provides a network device, comprising: a memory storing executable program code; a transceiver coupled to the memory; the transceiver is used to execute the method described in the second aspect of the embodiment of the present invention.

[0010] Another aspect of an embodiment of the present invention provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enables the computer to execute the method as described in the first aspect or the second aspect of the present invention.

[0011] Yet another aspect of an embodiment of the present invention provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method as described in the first aspect or the second aspect of the present invention.

[0012] Another aspect of an embodiment of the present invention provides a chip, which is coupled to a memory in the terminal device, so that the chip calls program instructions stored in the memory during operation, so that the terminal device executes the method described in the first aspect of the present invention.

[0013] Another aspect of an embodiment of the present invention provides a chip, which is coupled to a memory in the network device, so that the chip calls program instructions stored in the memory during operation, so that the network device executes the method described in the second aspect of the present invention.

[0014] In the technical solution provided by the embodiment of the present invention, the terminal device determines an SSB burst set, the SSB burst set includes N candidate SSB positions, each of the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; the terminal device determines the quasi-co-address QCL relationship of the N candidate SSB indexes according to the first indication information. That is, after the QCL relationship indication is introduced in the high frequency, the SSB or SSB index corresponding to a beam in the high frequency SSB burst set can be sent through at least one of the multiple candidate SSB positions, so that there can be more SSB transmission opportunities in the network, improving the initial access and measurement performance of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A A schematic diagram of a partial SSB pattern with respect to FR1 in different situations in the NR system;

[0016] Figure 1B A schematic diagram of a partial SSB pattern of FR2 under different conditions in the NR system;

[0017] Figure 1C Schematic diagram of candidate SSB positions within a half frame in the prior art;

[0018] Figure 2 A system architecture diagram of a communication system used in an embodiment of the present invention;

[0019] Figure 3A Schematic diagram of an embodiment of a method for transmitting a synchronization signal block SSB in an embodiment of the present invention;

[0020] Figure 3B is a schematic diagram of the QCL relationship of the candidate SSB in an embodiment of the present invention;

[0021] Figure 3C A schematic diagram of the QCL relationship between SSB0 and SSB8 in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of an embodiment of a terminal device in an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of an embodiment of a network device in an embodiment of the present invention;

[0024] Figure 6A schematic diagram of another embodiment of a terminal device in an embodiment of the present invention

[0025] Figure 7 FIG. 2 is a schematic diagram of another embodiment of a network device in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] The following is a brief description of the high frequency related background involved in the present invention, as shown below:

[0028] 1. High-frequency related background

[0029] The research on the new radio (NR) system currently mainly considers two frequency bands, frequency band FR1 (Frequency range 1) and frequency band FR2 (Frequency range 2). The frequency domain ranges included in FR1 and FR2 are shown in Table 1.

[0030] Frequency band definition Corresponding frequency range FR1 410MHz–7.125GHz FR2 24.25GHz–52.6GHz

[0031] Table 1

[0032] With the evolution of NR systems, new frequency bands, i.e., high frequency technologies, have also begun to be studied. The frequency domain range included in the new frequency band is shown in Table 2. For ease of description, it is represented by FRX in this application. It should be understood that the name of the frequency band should not constitute any limitation.

[0033] high frequency Corresponding frequency range FRX 52.6GHz–71GHz

[0034] Table 2

[0035] The FRX band includes both licensed and unlicensed spectrum. In other words, the FRX band includes both unshared and shared spectrum. Unlicensed spectrum is a spectrum that can be used for radio equipment communications, which is divided by countries and regions. This spectrum is generally considered to be a shared spectrum, that is, as long as the communication equipment in different communication systems meets the regulatory requirements set by the country or region on the spectrum, they can use the spectrum without applying for exclusive spectrum authorization from the government.

[0036] In order to allow various communication systems that use unlicensed spectrum for wireless communication to coexist in a friendly manner on the spectrum, some countries or regions have stipulated regulatory requirements that must be met when using unlicensed spectrum. For example, the communication device follows the "Listen Before Talk (LBT)" principle, that is, before the communication device sends a signal on the channel of the 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 the 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 the communication device using the channel of the 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 the 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 the unlicensed spectrum for signal transmission, and so on.

[0037] The subcarrier spacing considered in the FRX band is larger than that of FR2. The current candidate subcarrier spacings include at least one of the following: 240kHz, 480kHz, 960kHz, 1.92MHz, and 3.84MHz. As an example, the corresponding parameter sets (Numerology) under these candidate subcarrier spacings are shown in Table 3 below.

[0038] Subcarrier spacing Symbol length Normal CP length Extend CP length Slot length 240kHz 4.16us 0.292us 1.04us 62.5us 480kHz 2.08us 0.146us 0.52us 31.25us 960kHz 1.04us 0.073us 0.26us 15.625us 1.92MHz 0.52us 0.037us 0.13us 7.8125us 3.84MHz 0.26us 0.018us 0.065us 3.90625us

[0039] Table 3

[0040] 2. NR Synchronization Signal Block (SSB) pattern

[0041] In the NR system, the synchronization signal block (Synchronization Signal / PBCH Block, SSB or SS / PBCH block) pattern supported by FR1 includes 3 cases (Case A, B, C), and the SSB pattern supported by FR2 includes 2 cases (Case D, E). Among them, an SSB transmission opportunity can include one or more SSBs. An SSB includes 4 symbols in the time domain. A group of SSBs should be transmitted within one half frame (5ms). Assume that the index of the first symbol of the first time slot in a half frame is symbol 0:

[0042] (1) Case A-15kHz subcarrier spacing:

[0043] 1) The index of the first symbol of SSB includes {2,8}+14*n;

[0044] 2) For non-shared spectrum:

[0045] ① Carrier frequency is less than or equal to 3GHz, n = 0, 1;

[0046] ②The carrier frequency in FR1 is greater than 3GHz, n=0,1,2,3;

[0047] 3) For shared spectrum, n = 0, 1, 2, 3, 4.

[0048] (2) Case B-30kHz subcarrier spacing:

[0049] 1) The index of the first symbol of SSB includes {4,8,16,20}+28*n;

[0050] ① Carrier frequency is less than or equal to 3GHz, n = 0;

[0051] ②The carrier frequency in FR1 is greater than 3GHz, n=0,1.

[0052] (3) Case C - 30kHz subcarrier spacing:

[0053] 1) The index of the first symbol of SSB includes {2,8}+14*n;

[0054] 2) For non-shared spectrum and paired spectrum (such as frequency division duplex (FDD) scenario);

[0055] ① Carrier frequency is less than or equal to 3GHz, n = 0, 1;

[0056] ②The carrier frequency in FR1 is greater than 3GHz, n=0,1,2,3;

[0057] 3) For non-shared spectrum and non-paired spectrum (such as Time Division Duplex (TDD) scenario);

[0058] ① Carrier frequency is less than or equal to 2.4GHz, n=0,1;

[0059] ②The carrier frequency in FR1 is greater than 2.4GHz, n=0,1,2,3.

[0060] like Figure 1A FIG. 1 is a schematic diagram of a partial SSB pattern regarding FR1 under different conditions in a NR system. FIG.

[0061] 4) For shared spectrum, n = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

[0062] (4) Case D-120kHz subcarrier spacing:

[0063] 1) The index of the first symbol of SSB includes {4,8,16,20}+28*n;

[0064] ①For the carrier frequencies within FR2, n=0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18.

[0065] (5) Case E - 240kHz subcarrier spacing:

[0066] 1) The index of the first symbol of SSB includes {8, 12, 16, 20, 32, 36, 40, 44} + 56*n;

[0067] ①For the carrier frequency within FR2, n=0,1,2,3,5,6,7,8.

[0068] like Figure 1B FIG. 1 is a schematic diagram of a partial SSB pattern regarding FR2 under different conditions in a NR system. FIG.

[0069] 3. SSB transmission in NR system

[0070] In the NR system, for the FR1 frequency band, there are up to 8 SSBs in an SSB burst set, and up to 3 bits are required to indicate the indexes of these 8 SSBs. These 3 bits are implicitly carried by the demodulation reference signal (DMRS) sequence of the physical broadcast channel (PBCH). There are 8 different PBCH DMRS sequences, corresponding to 8 different SSB indexes. For the FR2 frequency band, due to the higher frequency, in order to ensure the long-distance transmission of the signal, its beam energy also needs to be more concentrated. Correspondingly, the single beam coverage angle will be smaller, and then more beams will be needed to ensure the coverage of the cell. Currently, a maximum of 64 SSBs can be configured in the FR2 frequency band, and 6 bits are required to indicate the indexes 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 payload content of the PBCH.

[0071] One of the main functions of the SSB index is to allow the UE to obtain system timing information. In addition, the SSB index has another function, which is to indicate the Quasi Co-Location (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. Specifically for SSB, 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 user equipment (UserEquipment, UE) can assume that the base station uses the same beam to transmit these SSBs; SSBs corresponding to different SSB indexes are not considered to have a QCL relationship, because they may come from different base station transmission beams and experience different channel transmission characteristics.

[0072] 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.

[0073] For FR2, when the network device indicates the SSB index of the transmission through SIB1, for example, by providing the corresponding configuration information through the position indication of the SSB in the burst set in SIB1 (for example, ssb-PositionsInBurst), 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. Specifically, 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 this method requires a total of 16 indication bits. As an example, assuming that the group bitmap, such as the group indication (e.g., groupPresence) is "11000000", it means that the SSBs in the 0th group of SSBs (SSB indexes 0 to 7) and the 1st group of SSBs (SSB indexes 8 to 15) perform SSB transmission according to the indication of the intra-group bitmap. Assuming that the intra-group bitmap, such as the intra-group indication (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 of SSBs and the 0th, 1st, 4th, and 5th SSB transmission candidate positions in the 1st group of SSBs. 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, by providing the corresponding configuration information through ssb-PositionsInBurst in the serving cell common configuration indication (e.g., ServingCellConfigCommon), a complete bitmap is used, that is, 64 bits are used to indicate the transmitted SSB index. The terminal device should expect that the configuration information provided by ssb-PositionsInBurst in ServingCellConfigCommon is the same as the configuration information provided by ssb-PositionsInBurst in SIB1.

[0074] 4. SSB transmission in NR-U system

[0075] 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. The discovery signal transmission opportunity window appears periodically, and the discovery signal transmission opportunity window can include multiple candidate positions for SSB transmission. When the network device sends SSB in the discovery signal transmission opportunity window, it can make multiple LBT attempts, and after the LBT is successful, it can perform SSB transmission through at least one of the multiple candidate positions. In different discovery signal transmission opportunity windows, the base station can select a candidate position that obtains the channel use right from the SSB candidate position in the discovery signal transmission opportunity window according to the LBT result for SSB transmission.

[0076] On a carrier in an unlicensed spectrum, the length of the discovery signal transmission opportunity window may be configured by a network device. For example, for a serving cell, a terminal device may determine the length of the discovery signal transmission opportunity window through indication information of a network device, such as DiscoveryBurst-WindowLength-r16. Optionally, the length of the discovery signal transmission opportunity window indicated by the indication information may be 0.5 ms, 1 ms, 2 ms, 3 ms, 4 ms, or 5 ms.

[0077] 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 half frame, that is, 5 ms.

[0078] Two candidate SSB positions can be included in a time slot, 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. If the subcarrier spacing of the SSB is 15kHz, the maximum number of candidate SSB positions is 10, and the candidate SSB indexes sent at the candidate SSB positions in the half frame are from 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 the candidate SSB indexes sent at the candidate SSB positions in the half frame are from 0 to 19 in the time domain. Figure 1C A schematic diagram of candidate SSB positions in a half frame is given. Optionally, the half frame can be the first half frame (first 5 ms) or the second half frame (last 5 ms) in the radio frame.

[0079] The terminal device can determine the candidate SSB position with the same QCL assumption based on the quasi co-location (QCL) assumption indication information Q, or in other words, the terminal device can determine the SSB index based on Q. 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. SSB index = (candidate SSB index mod Q), or, SSB index = (DMRS sequence index mod Q of PBCH). For example, if the value of Q is 4, the candidate SSB index of the SSB sent at candidate SSB position 10 is 10, so it can be considered that the SSB index of the SSB sent at the candidate SSB position 10 is (10mod 4) = 2.

[0080] 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, wherein 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. As 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.

[0081] 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.

[0082] For example, assuming that the bitmap corresponding to ssb-PositionsInBurst on a serving cell is [10100000], and the Q value is 4, then the SSB indexes sent on the serving cell are SSB 0 and SSB 2. If the subcarrier spacing of SSB is 30kHz, the signal transmission opportunity window length is 5ms, such as Figure 1AAs shown, the candidate SSB positions that can be used for SSB transmission include candidate SSB positions 0, 2, 4, 6, 8, 10, 12, 14, 16, and 18. In one example, if the network device succeeds in LBT at candidate SSB position 6, the candidate SSB positions actually used by the network device for SSB transmission include candidate SSB positions 6 and 8, or in other words, the candidate SSB indexes sent by the network device are SSB6 and SSB8. In the discovery signal transmission opportunity window, if the channel occupancy obtained by the network device also includes candidate SSB positions 10, 12, 14, 16, and 18, then the candidate SSB positions 10, 12, 14, 16, and 18 are not used for SSB transmission.

[0083] When the new radio (NR) system is deployed in high frequency, since the FRX band includes both non-shared spectrum and shared spectrum, the transmission of the synchronization signal block (SSB) on the shared 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 the Listen Before Talk (LBT) is successful. Since the high frequency includes 64 SSBs, or even more SSBs may be introduced, such as 128 SSBs, in this scenario, how to define the QCL relationship of SSB is an issue that needs to be discussed.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] The terminal device can be a station (STAION, 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.

[0090] 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.).

[0091] 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.

[0092] 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.

[0093] 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 (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0094] 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.

[0095] 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.

[0096] like Figure 2 As shown, it is a system architecture diagram of a communication system applied in an embodiment of the present invention. The communication system may include a network device, which may be a device that communicates with a terminal device (or referred to as a communication terminal or terminal). The network device can provide communication coverage for a specific geographical area and can communicate with terminal devices located in the coverage area. Figure 2 An exemplary embodiment shows a network device and two terminal devices. Optionally, the communication system may include multiple network devices and each network device may include other number of terminal devices within its coverage area, which is not limited in the present embodiment. Optionally, the communication system may also include other network entities such as a network controller and a mobility management entity, which is not limited in the present embodiment.

[0097] Among them, the network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks for communicating with the access network equipment. The access network equipment may be an evolutionary base station (evolutional node B, referred to as eNB or e-NodeB) macro base station, micro base station (also called "small base station"), micro-micro base station, access point (AP), transmission point (TP) or new generation base station (new generation Node B, gNodeB) in a long-term evolution (LTE) system, a next-generation (mobile communication system) (next radio, NR) system or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0098] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 2 Taking the communication system shown as an example, the communication equipment may include network equipment and terminal equipment with communication functions. The network equipment and terminal equipment may be specific equipment described in the embodiments of the present invention, which will not be repeated here; the communication equipment may also include other equipment in the communication system, such as network controllers, mobile management entities and other network entities, which are not limited to the embodiments of the present application.

[0099] 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.

[0100] 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, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0101] It should be understood that in the embodiments of the present application, "preset" 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 thereof. For example, the preset may refer to what is defined in the protocol.

[0102] It should be understood that in the embodiments 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, and the present application does not limit this.

[0103] 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.

[0104] The technical solution of the present invention is further described below by way of embodiments. Figure 3A As shown, it is a schematic diagram of an embodiment of a method for transmitting a synchronization signal block SSB in an embodiment of the present invention, which may include:

[0105] 301. The network device sends first indication information to the terminal device, where the first indication information is used to determine a quasi-co-location QCL relationship of N candidate SSB indexes, where the N candidate SSB indexes correspond to N candidate SSB positions in an SSB burst set, and N is an integer greater than 20.

[0106] The terminal device receives the first indication information.

[0107] Optionally, the first indication information is sent by the network device through a system message MIB or SIB1 or PBCH, or, the first indication information is sent by the network device through a high-level configuration parameter, or, the first indication information is preset.

[0108] Optionally, N is an integer greater than 20.

[0109] Optionally, the value of N is 64 or 128. Exemplarily, the value of N may be 64 or 128 or other values.

[0110] It can be understood that, because each of the N candidate SSB positions corresponds to a candidate SSB index, when the value of N is 64, the SSB burst set includes 64 candidate SSB positions, and the 64 candidate SSB positions correspond to 64 candidate SSB indexes; when the value of N is 128, the SSB burst set includes 128 candidate SSB positions, and the 128 candidate SSB positions correspond to 128 candidate SSB indexes.

[0111] Optionally, the subcarrier spacing corresponding to the SSB burst set is 120kHz, the value of N is 128, and / or the transmission window length corresponding to the SSB burst set is 10ms. That is, for a subcarrier spacing of 120kHz, the number of candidate SSBs included in the SSB burst set can be extended to 128, and / or the transmission window length corresponding to the SSB burst set can be extended to 10ms.

[0112] Optionally, the information field in the PBCH is reused to indicate the newly added SSB index. For example, the starting position of the fixed SSB burst set transmission is the first half frame, and the half frame indication in the PBCH is reused to indicate the newly added SSB index.

[0113] Optionally, the existing grouping method is reused to indicate the index of the SSB.

[0114] Optionally, when the number of candidate SSB indexes is greater than 64, the maximum number of SSB indexes is 64.

[0115] 302. The terminal device determines an SSB burst set, wherein the SSB burst set includes N candidate SSB positions, each of the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20.

[0116] Optionally, the terminal device determines the SSB burst set in a predefined manner.

[0117] 303. The terminal device determines the quasi-co-location QCL relationship of N candidate SSB indexes according to the first indication information.

[0118] Optionally, the QCL relationship includes: the first SSB index corresponds to M first candidate SSB indexes among the N candidate SSB indexes, the M first candidate SSB indexes have the same QCL relationship, and M is an integer greater than or equal to 1 and less than or equal to N. It can be understood that the first SSB index here is any SSB index.

[0119] It can be understood that the M first candidate SSB indexes have the same QCL relationship, which can be considered as the SSBs indicated by the M first candidate SSB indexes having the same QCL relationship, or, it can also be considered as the SSB positions corresponding to the M first candidate SSB indexes having the same QCL relationship.

[0120] (1) The first indication information indicates a Q value, and the terminal device determines the QCL relationship of the N candidate SSB indexes according to the first indication information, including:

[0121] The terminal device determines the QCL relationship of the N candidate SSB indexes according to the first formula, or the terminal device determines that the M first candidate SSB indexes have the same QCL relationship according to the first formula;

[0122] The first formula includes: the first SSB index = mod (the first candidate SSB index, the first indication information), wherein mod() represents a modulo operation, and the first SSB index includes 0, 1, ..., Q-1. The first candidate SSB index is any one of the M first candidate SSB indexes corresponding to the first SSB index.

[0123] Optionally, the value of Q can be 8, 16, 32, or 64.

[0124] Optionally, the first indication information indicates a Q value, if the value of Q is less than or equal to 8, Q is a positive integer, and the terminal device determines the QCL relationship of the N candidate SSB indexes according to the first indication information, including:

[0125] The terminal device determines the QCL relationship of the N candidate SSB indexes according to the second formula, or the terminal device determines that the M first candidate SSB indexes have the same QCL relationship according to the second formula;

[0126] The second formula includes: the first SSB index = mod (the demodulation reference signal DMRS sequence index of the physical broadcast channel PBCH corresponding to the first candidate SSB index, the first indication information), where mod() represents a modulo operation.

[0127] Exemplarily, when the value of Q is 8, the first SSB index can also be determined according to the DMRS sequence index of the PBCH.

[0128] It is understandable that, similar to the NR-U system, in the high frequency system, the quasi co-location (QCL) first indication information Q can also be introduced to determine the candidate SSB positions with the same QCL. Q can be used to indicate the maximum number of SSBs that can be transmitted, or the terminal device can determine the SSB index based on Q.

[0129] (2) Optionally, the first indication information indicates an M value, and the terminal device determines the QCL relationship of the N candidate SSB indexes according to the first indication information, which may include:

[0130] The terminal device determines the QCL relationship of the N candidate SSB indexes according to a third formula, or the terminal device determines that the M first candidate SSB indexes have the same QCL relationship according to the third formula;

[0131] The third formula includes: the first SSB index=the first candidate SSB index+r, and the first SSB index includes (kM);

[0132] Among them, r = 0, 1, ..., M-1; k = 0, 1, ..., ceil(N / M)-1, ceil() means rounding up.

[0133] Exemplarily, when the value of N is 64, the transmittable SSB index included in the SSB burst set is SSB(kM), where k is 0, 1, ..., 64 / M-1. M is the number of candidate SSB indexes (or positions) corresponding to one SSB index. Optionally, one SSB index corresponds to M consecutive candidate SSB indexes. 64 / M is the maximum number of transmittable SSB indexes.

[0134] Optionally, the value of M can be 1, 2, 4, or 8.

[0135] Optionally, the first SSB index corresponds to M consecutive first candidate SSB indexes among the N candidate SSB indexes.

[0136] Optionally, the first indication information indicates an M value, wherein:

[0137] If the value of M is 8, the number of first SSB indexes that can be transmitted in the SSB burst set is less than or equal to 8;

[0138] If the value of M is 4, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0139] If the value of M is 2, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0140] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0141] Optionally, the first indication information indicates an M value, wherein:

[0142] If the value of M is 4, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 2;

[0143] If the value of M is 2, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 4;

[0144] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0145] Exemplarily, if M=8, the number of SSB beams sent by the network device is less than or equal to 8. If M=4, the number of SSB beams sent by the network device is greater than 8 and less than or equal to 16. If M=4, the number of SSBs that the network device can send is divisible by (8 / M=2), for example, one of 2, 4, 6, 8, 10, 12, 14, and 16. If M=2, the number of SSB beams sent by the network device is greater than 16 and less than or equal to 32. If M=2, the number of SSBs that the network device can send is divisible by (8 / M=4), for example, one of 4, 8, 12, 16, 20, 24, 28, and 32. If M=1, the number of SSB beams sent by the network device is greater than 32 and less than or equal to 64.

[0146] For example, assuming that M is 4, the QCL relationship of the candidate SSB is as follows: Figure 3B As shown, in Figure 3B As shown, SSB0, SSB1, SSB2, and SSB3 correspond to the same SSB index, which is SSB index 0; SSB4, SSB5, SSB6, and SSB7 correspond to the same SSB index, which is SSB index 4; SSB8, SSB9, SSB10, and SSB11 correspond to the same SSB index, which is SSB index 8; ...; SSB56, SSB57, SSB58, and SSB59 correspond to the same SSB index, which is SSB index 56; SSB60, SSB61, SSB62, and SSB63 correspond to the same SSB index, which is SSB index 60. That is, the first SSB index that can be transmitted included in the SSB burst set includes: SSB index 0, SSB index 4, SSB index 8, SSB index 12, SSB index 16, SSB index 20, SSB index 24, SSB index 28, SSB index 32, SSB index 36, SSB index 40, SSB index 44, SSB index 48, SSB index 52, SSB index 56, and SSB index 60.

[0147] Optionally, if the value of M is 1, the SSB burst set does not include candidate SSB indexes with the same QCL relationship. That is, if M=1, it means that the SSB burst set does not include two SSBs with the same QCL relationship.

[0148] It can be understood that M is used to determine the QCL relationship of SSB within a group, or M is used to indicate the number of candidate SSB positions corresponding to an SSB index within a group, where different groups follow the same QCL criteria.

[0149] 304. The network device sends second indication information to the terminal device, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

[0150] The terminal device receives second indication information, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, and L and C are both positive integers.

[0151] Optionally, the second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or,

[0152] The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

[0153] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0154] If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or,

[0155] If the second indication information includes (L+C) bits, valid bits in the (L+C) bits are determined according to at least one of the following:

[0156] If Q is less than or equal to C, the first Q bits of the C bits are valid bits;

[0157] If Q is greater than C, the C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() indicates rounding up.

[0158] Exemplarily, the network device selects the same candidate SSB position in different groups to transmit SSB. Optionally, the first (Q / 8) bits in the group bit map, such as groupPresence, are valid bits. For example, if Q=8, the first bit in the group bit map is a valid bit; if Q=16, the first 2 bits in the group bit map are valid bits; if Q=32, the first 4 bits in the group bit map are valid bits; if Q=64, all 8 bits in the group bit map are valid bits.

[0159] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, and the second indication information includes (L+C) bits. If Q is less than or equal to (L+C), the first Q bits of the (L+C) bits are valid bits, wherein the C bits of the (L+C) bits are located before the L bits, or the L bits of the (L+C) bits are located before the C bits.

[0160] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0161] If the value of Q is 8, the number of first SSB indexes that can be transmitted in the SSB burst set is less than or equal to 8;

[0162] If the value of Q is 16, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0163] If the value of Q is 32, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0164] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0165] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0166] If the value of Q is 16, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 2;

[0167] If the value of Q is 32, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 4;

[0168] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0169] Exemplarily, if Q=8, the number of SSB beams sent by the network device is less than or equal to 8. If Q=16, the number of SSB beams sent by the network device is greater than 8 and less than or equal to 16. Optionally, in this case, the number of SSBs that the network device can send is divisible by 2, for example, one of 10, 12, 14, and 16. If Q=32, the number of SSB beams sent by the network device is greater than 16 and less than or equal to 32. Optionally, in this case, the number of SSBs that the network device can send is divisible by 4, for example, one of 20, 24, 28, and 32. If Q=64, the number of SSB beams sent by the network device is greater than 32 and less than or equal to 64.

[0170] For example, assuming the Q value is 16, the QCL relationship between SSB0 and SSB8 is as follows: Figure 3C As shown, in Figure 3C As shown, the candidate SSB indexes corresponding to SSB0 include SSB0, SSB16, SSB32, SSB48, that is, SSB0 can be transmitted through the candidate SSB positions corresponding to SSB0, SSB16, SSB32, SSB48; the candidate SSB indexes corresponding to SSB8 include SSB8, SSB24, SSB40, SSB56, which means that SSB8 can be transmitted through the candidate SSB positions corresponding to SSB8, SSB24, SSB40, SSB56. Other SSB indexes can be obtained similarly. In this case, the first SSB indexes that can be transmitted included in the SSB burst set are SSB0 to SSB15.

[0171] Optionally, if the value of Q is 64, the SSB burst set does not include candidate SSB indexes with the same QCL relationship. That is, if Q=64, it means that the SSB burst set does not include two SSBs with the same QCL relationship.

[0172] Optionally, the second indication information is sent by the network device through a system message SIB1, or the second indication information is sent by the network device through a high-level configuration parameter.

[0173] However, when the network device indicates the SSB index of the transmission through SIB1, the 64 SSB candidate positions are divided into 8 groups, each group includes 8 SSBs, and a total of 16 bits are used to indicate the SSB index of the transmission. Therefore, in the existing SSB transmission indication method, it is impossible to directly indicate the SSB index of any combination of transmissions in the SSB burst set. For example, if the network device wants to transmit SSB0 and SSB10, it cannot indicate the SSB index of the transmission through this method.

[0174] In some optional embodiments, when the network device indicates the transmitted SSB index through SIB1, for example, provides corresponding configuration information through ssb-PositionsInBurst in SIB1, a complete bit map can be used, that is, 64 bits are used to indicate the transmitted SSB index.

[0175] In some optional embodiments, when the network device selects a transmittable SSB index, it needs to meet the indication rules of the existing SSB transmission indication method.

[0176] It should be noted that, in the embodiment of the present invention, the timing of step 301 to step 304 is not limited.

[0177] In an embodiment of the present invention, a terminal device determines an SSB burst set, wherein the SSB burst set includes N candidate SSB positions, each of the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; the terminal device determines the quasi-co-address QCL relationship of the N candidate SSB indexes according to the first indication information. That is, since the high frequency includes 64 SSBs, or even a larger number of SSBs may be introduced, such as 128 SSBs, in this scenario, the QCL relationship of the SSB can be more accurately defined. After the QCL relationship indication is introduced in the high frequency, the SSB or SSB index corresponding to a beam in the high frequency SSB burst set can be sent through at least one of the multiple candidate SSB positions, so that there can be more SSB transmission opportunities in the network, thereby improving the initial access and measurement performance of the terminal device.

[0178] Corresponding to the method of at least one embodiment applied to a terminal device, the embodiment of the present application also provides one or more terminal devices. The terminal device of the embodiment of the present application can implement any one of the implementation modes of the above method. Figure 4 FIG. 1 is a schematic diagram of an embodiment of a terminal device in an embodiment of the present invention, which may include:

[0179] Processing module 401 is used to determine an SSB burst set, the SSB burst set includes N candidate SSB positions, each of the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; determine the quasi-co-location QCL relationship of the N candidate SSB indexes according to the first indication information.

[0180] Optionally, the QCL relationship includes:

[0181] The first SSB index corresponds to M first candidate SSB indexes among N candidate SSB indexes, the M first candidate SSB indexes have the same QCL relationship, and M is an integer greater than or equal to 1 and less than or equal to N.

[0182] Optionally, the first indication information indicates a Q value.

[0183] The processing module 401 is specifically configured to determine the QCL relationship of N candidate SSB indexes according to the first formula, or determine that M first candidate SSB indexes have the same QCL relationship according to the first formula;

[0184] The first formula includes: first SSB index = mod(first candidate SSB index, first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

[0185] Optionally, the first indication information indicates a Q value. If the value of Q is less than or equal to 8, Q is a positive integer.

[0186] The processing module 401 is specifically configured to determine the QCL relationship of N candidate SSB indexes according to the second formula, or determine that M first candidate SSB indexes have the same QCL relationship according to the second formula;

[0187] The second formula includes: first SSB index = mod (demodulation reference signal DMRS sequence index of the physical broadcast channel PBCH corresponding to the first candidate SSB index, first indication information), where mod() represents a modulo operation.

[0188] Optionally, the terminal device further includes:

[0189] The transceiver module 402 is used to receive second indication information, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

[0190] Optionally, the second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or,

[0191] The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

[0192] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0193] If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or,

[0194] If the second indication information includes (L+C) bits, valid bits among the (L+C) bits are determined according to at least one of the following:

[0195] If Q is less than or equal to C, the first Q bits of the C bits are valid bits;

[0196] If Q is greater than C, C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() means rounding up.

[0197] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, and the second indication information includes (L+C) bits. If Q is less than or equal to (L+C), the first Q bits of the (L+C) bits are valid bits, where C bits of the (L+C) bits are located before L bits, or L bits of the (L+C) bits are located before C bits.

[0198] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0199] If the value of Q is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0200] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0201] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0202] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0203] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0204] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0205] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0206] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0207] Optionally, if the value of Q is 64, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0208] Optionally, the first indication information indicates an M value.

[0209] The processing module 401 is specifically configured to determine the QCL relationship of N candidate SSB indexes according to a third formula, or determine that M first candidate SSB indexes have the same QCL relationship according to the third formula;

[0210] The third formula includes: first SSB index=first candidate SSB index+r, the first SSB index includes (kM);

[0211] Among them, r=0, 1,…, M-1; k=0, 1,…, ceil(N / M)-1.

[0212] Optionally, the first SSB index corresponds to M consecutive first candidate SSB indexes among N candidate SSB indexes.

[0213] Optionally, the first indication information indicates an M value, where:

[0214] If the value of M is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0215] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0216] If the value of M is 2, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0217] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0218] Optionally, the first indication information indicates an M value, where:

[0219] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0220] If the value of M is 2, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0221] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0222] Optionally, if the value of M is 1, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0223] Optionally, the second indication information is sent by the network device through a system message SIB1, or the second indication information is sent by the network device through a high-level configuration parameter.

[0224] Optionally, the first indication information is sent by the network device through the system message MIB or SIB1 or PBCH, or, the first indication information is sent by the network device through a high-level configuration parameter, or, the first indication information is preset.

[0225] Optionally, the value of N is 64 or 128.

[0226] Optionally, the subcarrier spacing corresponding to the SSB burst set is 120kHz, the value of N is 128, and / or the transmission window length corresponding to the SSB burst set is 10ms.

[0227] Corresponding to the method of at least one embodiment applied to a network device, the embodiment of the present application also provides one or more network devices. The network device of the embodiment of the present application can implement any one of the implementation modes of the above method. Figure 5 FIG. 1 is a schematic diagram of an embodiment of a network device in an embodiment of the present invention, which may include:

[0228] The transceiver module 501 is used to send the first indication information to the terminal device, and the first indication information is used to determine the quasi-co-location QCL relationship of N candidate SSB indexes, the N candidate SSB indexes correspond to the N candidate SSB positions included in the SSB burst set, and N is an integer greater than 20.

[0229] Optionally, the QCL relationship includes:

[0230] The first SSB index corresponds to M first candidate SSB indexes among N candidate SSB indexes, the M first candidate SSB indexes have the same QCL relationship, and M is an integer greater than or equal to 1 and less than or equal to N.

[0231] Optionally, the first indication information indicates a Q value, and the first indication information is used to determine a QCL relationship of N candidate SSB indexes according to a first formula, or the first indication information is used to determine that M first candidate SSB indexes have the same QCL relationship according to the first formula;

[0232] The first formula includes: first SSB index = mod(first candidate SSB index, first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

[0233] Optionally, the first indication information indicates a Q value, if the value of Q is less than or equal to 8, Q is a positive integer, and the first indication information is used to determine the QCL relationship of the N candidate SSB indexes according to the second formula, or the first indication information is used to determine that the M first candidate SSB indexes have the same QCL relationship according to the second formula;

[0234] The second formula includes: first SSB index = mod (demodulation reference signal DMRS sequence index of the physical broadcast channel PBCH corresponding to the first candidate SSB index, first indication information), where mod() represents a modulo operation.

[0235] Optionally, the transceiver module 501 is also used to send second indication information to the terminal device, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

[0236] Optionally, the second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or,

[0237] The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

[0238] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0239] If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or,

[0240] If the second indication information includes (L+C) bits, valid bits among the (L+C) bits are determined according to at least one of the following:

[0241] If Q is less than or equal to C, the first Q bits of the C bits are valid bits;

[0242] If Q is greater than C, C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() means rounding up.

[0243] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, and the second indication information includes (L+C) bits. If Q is less than or equal to (L+C), the first Q bits of the (L+C) bits are valid bits, where C bits of the (L+C) bits are located before L bits, or L bits of the (L+C) bits are located before C bits.

[0244] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0245] If the value of Q is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0246] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0247] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0248] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0249] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0250] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0251] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0252] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0253] Optionally, if the value of Q is 64, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0254] Optionally, the first indication information indicates an M value, and the first indication information is used to determine the QCL relationship of the N candidate SSB indexes according to a third formula, or the first indication information is used to determine that the M first candidate SSB indexes have the same QCL relationship according to the third formula;

[0255] The third formula includes: first SSB index=first candidate SSB index+r, the first SSB index includes (kM);

[0256] Among them, r=0, 1,…, M-1; k=0, 1,…, ceil(N / M)-1.

[0257] Optionally, the first SSB index corresponds to M consecutive first candidate SSB indexes among N candidate SSB indexes.

[0258] Optionally, the first indication information indicates an M value, where:

[0259] If the value of M is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0260] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0261] If the value of M is 2, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0262] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0263] Optionally, the first indication information indicates an M value, where:

[0264] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0265] If the value of M is 2, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0266] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0267] Optionally, if the value of M is 1, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0268] Optionally, the second indication information is sent by the network device through a system message SIB1, or the second indication information is sent by the network device through a high-level configuration parameter.

[0269] Optionally, the first indication information is sent by the network device through the system message MIB or SIB1 or PBCH, or, the first indication information is sent by the network device through a high-level configuration parameter, or, the first indication information is preset.

[0270] Optionally, the value of N is 64 or 128.

[0271] Optionally, the subcarrier spacing corresponding to the SSB burst set is 120kHz, the value of N is 128, and / or the transmission window length corresponding to the SSB burst set is 10ms.

[0272] Corresponding to the method of at least one embodiment applied to a terminal device, the embodiment of the present application also provides one or more terminal devices. The terminal device of the embodiment of the present application can implement any one of the implementation modes of the above method. Figure 6 As shown, it is a schematic diagram of another embodiment of a terminal device in an embodiment of the present invention. The terminal device is described by taking a mobile phone as an example, and may include: a radio frequency (RF) circuit 610, a memory 620, an input unit 630, a display unit 640, a sensor 650, an audio circuit 660, a wireless fidelity (WiFi) module 670, a processor 680, and a power supply 690. Among them, the RF circuit 610 includes a receiver 614 and a transmitter 612. Those skilled in the art can understand that Figure 6 The mobile phone structure shown in the figure does not constitute a limitation on the mobile phone, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0273] Combine the following Figure 6 A detailed introduction to the various components of the mobile phone:

[0274] The RF circuit 610 can be used for receiving and sending signals during information transmission or calls. In particular, after receiving the downlink information of the base station, it is sent to the processor 680 for processing; in addition, the designed uplink data is sent to the base station. Generally, the RF circuit 610 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc. In addition, the RF circuit 610 can also communicate with the network and other devices through wireless communication. The above wireless communication can use any communication standard or protocol, including but not limited to the global system of mobile communication (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), email, short messaging service (SMS), etc.

[0275] The memory 620 can be used to store software programs and modules. The processor 680 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 620. The memory 620 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory 620 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0276] The input unit 630 can be used to receive input digital or character information, and to generate key signal input related to the user settings and function control of the mobile phone. Specifically, the input unit 630 may include a touch panel 631 and other input devices 632. The touch panel 631, also known as a touch screen, can collect the user's touch operation on or near it (such as the user's operation on the touch panel 631 or near the touch panel 631 using any suitable object or accessory such as a finger, stylus, etc.), and drive the corresponding connection device according to a pre-set program. Optionally, the touch panel 631 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the processor 680, and can receive and execute commands sent by the processor 680. In addition, the touch panel 631 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 631, the input unit 630 may also include other input devices 632. Specifically, the other input devices 632 may include but are not limited to one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, etc.

[0277] The display unit 640 can be used to display information input by the user or information provided to the user and various menus of the mobile phone. The display unit 640 may include a display panel 641. Optionally, the display panel 641 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. Further, the touch panel 631 may cover the display panel 641. When the touch panel 631 detects a touch operation on or near it, it is transmitted to the processor 680 to determine the type of touch event. Subsequently, the processor 680 provides a corresponding visual output on the display panel 641 according to the type of touch event. Although in Figure 6 In the embodiment, the touch panel 631 and the display panel 641 are used as two independent components to realize the input and output functions of the mobile phone, but in some embodiments, the touch panel 631 and the display panel 641 can be integrated to realize the input and output functions of the mobile phone.

[0278] The mobile phone may also include at least one sensor 650, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 641 according to the brightness of the ambient light, and the proximity sensor may turn off the display panel 641 and / or the backlight when the mobile phone is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be repeated here.

[0279] The audio circuit 660, the speaker 661, and the microphone 662 can provide an audio interface between the user and the mobile phone. The audio circuit 660 can transmit the received audio data to the speaker 661 after converting the received audio data into an electrical signal, which is converted into a sound signal for output; on the other hand, the microphone 662 converts the collected sound signal into an electrical signal, which is received by the audio circuit 660 and converted into audio data, and then the audio data is output to the processor 680 for processing, and then sent to another mobile phone through the RF circuit 610, or the audio data is output to the memory 620 for further processing.

[0280] WiFi is a short-range wireless transmission technology. The mobile phone can help users send and receive emails, browse web pages and access streaming media through the WiFi module 670. It provides users with wireless broadband Internet access. Figure 6A WiFi module 670 is shown, but it is understandable that it is not an essential component of the mobile phone and can be omitted as needed without changing the essence of the invention.

[0281] The processor 680 is the control center of the mobile phone. It uses various interfaces and lines to connect various parts of the entire mobile phone. By running or executing software programs and / or modules stored in the memory 620, and calling data stored in the memory 620, it executes various functions of the mobile phone and processes data, thereby monitoring the mobile phone as a whole. Optionally, the processor 680 may include one or more processing units; preferably, the processor 680 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 680.

[0282] The mobile phone also includes a power supply 690 (such as a battery) for supplying power to various components. Preferably, the power supply can be logically connected to the processor 680 through a power management system, so that the power management system can manage charging, discharging, power consumption management, etc. Although not shown, the mobile phone can also include a camera, a Bluetooth module, etc., which will not be described in detail here.

[0283] In an embodiment of the present invention, the processor 680 is used to determine an SSB burst set, the SSB burst set including N candidate SSB positions, each of the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; and determine a quasi-co-location QCL relationship of the N candidate SSB indexes according to the first indication information.

[0284] Optionally, the QCL relationship includes:

[0285] The first SSB index corresponds to M first candidate SSB indexes among N candidate SSB indexes, the M first candidate SSB indexes have the same QCL relationship, and M is an integer greater than or equal to 1 and less than or equal to N.

[0286] Optionally, the first indication information indicates a Q value.

[0287] Processor 680 is specifically configured to determine the QCL relationship of N candidate SSB indexes according to the first formula, or determine that M first candidate SSB indexes have the same QCL relationship according to the first formula;

[0288] The first formula includes: first SSB index = mod(first candidate SSB index, first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

[0289] Optionally, the first indication information indicates a Q value. If the value of Q is less than or equal to 8, Q is a positive integer.

[0290] Processor 680 is specifically configured to determine the QCL relationship of N candidate SSB indexes according to the second formula, or determine that M first candidate SSB indexes have the same QCL relationship according to the second formula;

[0291] The second formula includes: first SSB index = mod (demodulation reference signal DMRS sequence index of the physical broadcast channel PBCH corresponding to the first candidate SSB index, first indication information), where mod() represents a modulo operation.

[0292] Optionally, the RF circuit 610 is used to receive second indication information, where the second indication information is used to indicate an SSB index transmitted in an SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, and L and C are both positive integers.

[0293] Optionally, the second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or,

[0294] The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

[0295] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0296] If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or,

[0297] If the second indication information includes (L+C) bits, valid bits among the (L+C) bits are determined according to at least one of the following:

[0298] If Q is less than or equal to C, the first Q bits of the C bits are valid bits;

[0299] If Q is greater than C, C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() means rounding up.

[0300] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, and the second indication information includes (L+C) bits. If Q is less than or equal to (L+C), the first Q bits of the (L+C) bits are valid bits, where C bits of the (L+C) bits are located before L bits, or L bits of the (L+C) bits are located before C bits.

[0301] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0302] If the value of Q is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0303] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0304] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0305] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0306] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0307] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0308] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0309] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0310] Optionally, if the value of Q is 64, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0311] Optionally, the first indication information indicates an M value.

[0312] Processor 680 is specifically configured to determine the QCL relationship of N candidate SSB indexes according to a third formula, or determine that M first candidate SSB indexes have the same QCL relationship according to the third formula;

[0313] The third formula includes: first SSB index=first candidate SSB index+r, the first SSB index includes (kM);

[0314] Among them, r=0, 1,…, M-1; k=0, 1,…, ceil(N / M)-1.

[0315] Optionally, the first SSB index corresponds to M consecutive first candidate SSB indexes among N candidate SSB indexes.

[0316] Optionally, the first indication information indicates an M value, where:

[0317] If the value of M is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0318] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0319] If the value of M is 2, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0320] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0321] Optionally, the first indication information indicates an M value, where:

[0322] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0323] If the value of M is 2, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0324] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0325] Optionally, if the value of M is 1, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0326] Optionally, the second indication information is sent by the network device through a system message SIB1, or the second indication information is sent by the network device through a high-level configuration parameter.

[0327] Optionally, the first indication information is sent by the network device through the system message MIB or SIB1 or PBCH, or, the first indication information is sent by the network device through a high-level configuration parameter, or, the first indication information is preset.

[0328] Optionally, the value of N is 64 or 128.

[0329] Optionally, the subcarrier spacing corresponding to the SSB burst set is 120kHz, the value of N is 128, and / or the transmission window length corresponding to the SSB burst set is 10ms.

[0330] Corresponding to the method of at least one embodiment applied to a network device, the embodiment of the present application also provides one or more network devices. The network device of the embodiment of the present application can implement any one of the implementation modes of the above method. Figure 7 FIG. 1 is a schematic diagram of another embodiment of a network device in an embodiment of the present invention, which may include:

[0331] Memory 701 and transceiver 702, memory 701 is used for executable program code;

[0332] Transceiver 702 is used to send first indication information to the terminal device, and the first indication information is used to determine the quasi-co-location QCL relationship of N candidate SSB indexes, where the N candidate SSB indexes correspond to N candidate SSB positions in the SSB burst set, and N is an integer greater than 20.

[0333] Optionally, the QCL relationship includes:

[0334] The first SSB index corresponds to M first candidate SSB indexes among N candidate SSB indexes, the M first candidate SSB indexes have the same QCL relationship, and M is an integer greater than or equal to 1 and less than or equal to N.

[0335] Optionally, the first indication information indicates a Q value, and the first indication information is used to determine a QCL relationship of N candidate SSB indexes according to a first formula, or the first indication information is used to determine that M first candidate SSB indexes have the same QCL relationship according to the first formula;

[0336] The first formula includes: first SSB index = mod(first candidate SSB index, first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

[0337] Optionally, the first indication information indicates a Q value, if the value of Q is less than or equal to 8, Q is a positive integer, and the first indication information is used to determine the QCL relationship of the N candidate SSB indexes according to the second formula, or the first indication information is used to determine that the M first candidate SSB indexes have the same QCL relationship according to the second formula;

[0338] The second formula includes: first SSB index = mod (demodulation reference signal DMRS sequence index of the physical broadcast channel PBCH corresponding to the first candidate SSB index, first indication information), where mod() represents a modulo operation.

[0339] Optionally, the transceiver 702 is also used to send second indication information to the terminal device, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

[0340] Optionally, the second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or,

[0341] The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

[0342] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0343] If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or,

[0344] If the second indication information includes (L+C) bits, valid bits among the (L+C) bits are determined according to at least one of the following:

[0345] If Q is less than or equal to C, the first Q bits of the C bits are valid bits;

[0346] If Q is greater than C, C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() means rounding up.

[0347] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, and the second indication information includes (L+C) bits. If Q is less than or equal to (L+C), the first Q bits of the (L+C) bits are valid bits, where C bits of the (L+C) bits are located before L bits, or L bits of the (L+C) bits are located before C bits.

[0348] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0349] If the value of Q is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0350] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0351] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0352] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0353] Optionally, the first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein:

[0354] If the value of Q is 16, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0355] If the value of Q is 32, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0356] If the value of Q is 64, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0357] Optionally, if the value of Q is 64, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0358] Optionally, the first indication information indicates an M value, and the first indication information is used to determine the QCL relationship of the N candidate SSB indexes according to a third formula, or the first indication information is used to determine that the M first candidate SSB indexes have the same QCL relationship according to the third formula;

[0359] The third formula includes: first SSB index=first candidate SSB index+r, the first SSB index includes (kM);

[0360] Among them, r=0, 1,…, M-1; k=0, 1,…, ceil(N / M)-1.

[0361] Optionally, the first SSB index corresponds to M consecutive first candidate SSB indexes among N candidate SSB indexes.

[0362] Optionally, the first indication information indicates an M value, where:

[0363] If the value of M is 8, the number of first SSB indices that can be transmitted in the SSB burst set is less than or equal to 8;

[0364] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is greater than 8 and less than or equal to 16;

[0365] If the value of M is 2, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 16 and less than or equal to 32;

[0366] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is greater than 32 and less than or equal to 64.

[0367] Optionally, the first indication information indicates an M value, where:

[0368] If the value of M is 4, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 2;

[0369] If the value of M is 2, the number of first SSB indices that can be transmitted in the SSB burst set is divisible by 4;

[0370] If the value of M is 1, the number of first SSB indexes that can be transmitted in the SSB burst set is divisible by 8.

[0371] Optionally, if the value of M is 1, the SSB burst set does not include candidate SSB indexes with the same QCL relationship.

[0372] Optionally, the second indication information is sent by the network device through a system message SIB1, or the second indication information is sent by the network device through a high-level configuration parameter.

[0373] Optionally, the first indication information is sent by the network device through the system message MIB or SIB1 or PBCH, or, the first indication information is sent by the network device through a high-level configuration parameter, or, the first indication information is preset.

[0374] Optionally, the value of N is 64 or 128.

[0375] Optionally, the subcarrier spacing corresponding to the SSB burst set is 120kHz, the value of N is 128, and / or the transmission window length corresponding to the SSB burst set is 10ms.

[0376] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk Solid State Disk (SSD)), etc.

[0377] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Claims

1. A method for transmitting a synchronization signal block SSB, characterized in that: include: The terminal device determines an SSB burst set, where the SSB burst set includes N candidate SSB positions, each candidate SSB position in the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; The terminal device determines the quasi-co-location QCL relationship of N candidate SSB indexes based on the first indication information.

2. The method according to claim 1, characterized in that: The QCL relationships include: The first SSB index corresponds to M first candidate SSB indexes among the N candidate SSB indexes, and the M first candidate SSB indexes have the same QCL relationship, where M is an integer greater than or equal to 1 and less than or equal to N.

3. The method according to claim 2, characterized in that The first indication information indicates a Q value, and the terminal device determines the QCL relationship of the N candidate SSB indexes according to the first indication information, including: The terminal device determines the QCL relationship of the N candidate SSB indexes according to the first formula, or the terminal device determines that the M first candidate SSB indexes have the same QCL relationship according to the first formula; The first formula includes: the first SSB index = mod (the first candidate SSB index, the first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: The terminal device receives second indication information, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, and L and C are both positive integers.

5. The method according to claim 4, characterized in that The second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or, The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

6. The method according to claim 4 or 5, characterized in that: The first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein: If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or, If the second indication information includes (L+C) bits, valid bits in the (L+C) bits are determined according to at least one of the following: If Q is less than or equal to C, the first Q bits of the C bits are valid bits; If Q is greater than C, the C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() indicates rounding up.

7. A method for transmitting a synchronization signal block SSB, characterized in that: include: The network device sends first indication information to the terminal device, where the first indication information is used to determine a quasi-co-location QCL relationship of N candidate SSB indexes, where the N candidate SSB indexes correspond to N candidate SSB positions in an SSB burst set, and N is an integer greater than 20.

8. The method according to claim 7, characterized in that The QCL relationships include: The first SSB index corresponds to M first candidate SSB indexes among the N candidate SSB indexes, and the M first candidate SSB indexes have the same QCL relationship, where M is an integer greater than or equal to 1 and less than or equal to N.

9. The method according to claim 8, characterized in that The first indication information indicates a Q value, and the first indication information is used to determine the QCL relationship of the N candidate SSB indexes according to a first formula, or the first indication information is used to determine that the M first candidate SSB indexes have the same QCL relationship according to the first formula; The first formula includes: the first SSB index = mod (the first candidate SSB index, the first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

10. The method according to any one of claims 7 to 9, characterized in that The method further comprises: The network device sends second indication information to the terminal device, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

11. The method according to claim 10, characterized in that The second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or, The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

12. The method according to claim 10 or 11, characterized in that: The first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein: If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or, If the second indication information includes (L+C) bits, valid bits in the (L+C) bits are determined according to at least one of the following: If Q is less than or equal to C, the first Q bits of the C bits are valid bits; If Q is greater than C, the C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() indicates rounding up.

13. A terminal device, characterized in that: include: A processing module, configured to determine an SSB burst set, wherein the SSB burst set includes N candidate SSB positions, each candidate SSB position in the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; Determine the quasi-co-location QCL relationship of N candidate SSB indexes according to the first indication information.

14. The terminal device according to claim 13, characterized in that: The QCL relationships include: The first SSB index corresponds to M first candidate SSB indexes among the N candidate SSB indexes, and the M first candidate SSB indexes have the same QCL relationship, where M is an integer greater than or equal to 1 and less than or equal to N.

15. The terminal device according to claim 14, characterized in that: The first indication information indicates a Q value, The processing module is specifically configured to determine the QCL relationship of the N candidate SSB indexes according to the first formula, or to determine that the M first candidate SSB indexes have the same QCL relationship according to the first formula; The first formula includes: the first SSB index = mod (the first candidate SSB index, the first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

16. The terminal device according to any one of claims 13 to 15, characterized in that: The terminal device further includes: The transceiver module is used to receive second indication information, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

17. The terminal device according to claim 16, characterized in that: The second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or, The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

18. The terminal device according to claim 16 or 17, characterized in that: The first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein: If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or, If the second indication information includes (L+C) bits, valid bits in the (L+C) bits are determined according to at least one of the following: If Q is less than or equal to C, the first Q bits of the C bits are valid bits; If Q is greater than C, the C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() indicates rounding up.

19. A network device, characterized in that: include: The transceiver module is used to send the first indication information to the terminal device, wherein the first indication information is used to determine the quasi-co-location QCL relationship of N candidate SSB indexes, wherein the N candidate SSB indexes correspond to N candidate SSB positions in the SSB burst set, and N is an integer greater than 20.

20. The network device according to claim 19, characterized in that: The QCL relationships include: The first SSB index corresponds to M first candidate SSB indexes among the N candidate SSB indexes, and the M first candidate SSB indexes have the same QCL relationship, where M is an integer greater than or equal to 1 and less than or equal to N.

21. The network device according to claim 20, characterized in that: The first indication information indicates a Q value, and the first indication information is used to determine the QCL relationship of the N candidate SSB indexes according to a first formula, or the first indication information is used to determine that the M first candidate SSB indexes have the same QCL relationship according to the first formula; The first formula includes: the first SSB index = mod (the first candidate SSB index, the first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

22. The network device according to any one of claims 19 to 21, characterized in that: The transceiver module is also used to send second indication information to the terminal device, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

23. The network device according to claim 22, characterized in that: The second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or, The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

24. The network device according to claim 22 or 23, characterized in that: The first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein: If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or, If the second indication information includes (L+C) bits, valid bits in the (L+C) bits are determined according to at least one of the following: If Q is less than or equal to C, the first Q bits of the C bits are valid bits; If Q is greater than C, the C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() indicates rounding up.

25. A terminal device, characterized in that: include: A processor, configured to determine an SSB burst set, wherein the SSB burst set includes N candidate SSB positions, each candidate SSB position in the N candidate SSB positions corresponds to a candidate SSB index, and N is an integer greater than 20; Determine the quasi-co-location QCL relationship of N candidate SSB indexes according to the first indication information.

26. The terminal device according to claim 25, characterized in that: The QCL relationships include: The first SSB index corresponds to M first candidate SSB indexes among the N candidate SSB indexes, and the M first candidate SSB indexes have the same QCL relationship, where M is an integer greater than or equal to 1 and less than or equal to N.

27. The terminal device according to claim 26, characterized in that: The first indication information indicates a Q value, The processor is specifically configured to determine the QCL relationship of the N candidate SSB indexes according to the first formula, or determine that the M first candidate SSB indexes have the same QCL relationship according to the first formula; The first formula includes: the first SSB index = mod (the first candidate SSB index, the first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

28. The terminal device according to any one of claims 25 to 27, characterized in that: The terminal device further includes: A transceiver is used to receive second indication information, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

29. The terminal device according to claim 28, characterized in that: The second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or, The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

30. The terminal device according to claim 28 or 29, characterized in that: The first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein: If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or, If the second indication information includes (L+C) bits, valid bits in the (L+C) bits are determined according to at least one of the following: If Q is less than or equal to C, the first Q bits of the C bits are valid bits; If Q is greater than C, the C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() indicates rounding up.

31. A network device, characterized in that: include: A transceiver is used to send first indication information to a terminal device, wherein the first indication information is used to determine a quasi-co-location QCL relationship of N candidate SSB indexes, wherein the N candidate SSB indexes correspond to N candidate SSB positions in an SSB burst set, and N is an integer greater than 20.

32. The network device according to claim 31, characterized in that: The QCL relationships include: The first SSB index corresponds to M first candidate SSB indexes among the N candidate SSB indexes, and the M first candidate SSB indexes have the same QCL relationship, where M is an integer greater than or equal to 1 and less than or equal to N.

33. The network device according to claim 32, characterized in that: The first indication information indicates a Q value, and the first indication information is used to determine the QCL relationship of the N candidate SSB indexes according to a first formula, or the first indication information is used to determine that the M first candidate SSB indexes have the same QCL relationship according to the first formula; The first formula includes: the first SSB index = mod (the first candidate SSB index, the first indication information), where mod() represents a modulo operation, and the first SSB index includes 0, 1,…, Q-1.

34. The network device according to any one of claims 31 to 33, characterized in that: The transceiver is also used to send second indication information to the terminal device, where the second indication information is used to indicate the SSB index transmitted in the SSB burst set, and the second indication information includes N bits, or the second indication information includes (L+C) bits, where LC=N, L and C are both positive integers.

35. The network device according to claim 34, characterized in that: The second indication information includes N bits, and the N bits correspond one-to-one to the N candidate SSB indexes; or, The second indication information includes (L+C) bits, the N candidate SSB indexes are divided into L groups, each group includes C candidate SSB indexes, the L bits correspond one-to-one to the L groups, and the C bits correspond one-to-one to the C candidate SSB indexes in each group.

36. The network device according to claim 34 or 35, characterized in that: The first indication information indicates a Q value, where Q is an integer greater than or equal to 1 and less than or equal to N, wherein: If the second indication information includes N bits, the first Q bits of the N bits are valid bits; or, If the second indication information includes (L+C) bits, valid bits in the (L+C) bits are determined according to at least one of the following: If Q is less than or equal to C, the first Q bits of the C bits are valid bits; If Q is greater than C, the C bits are valid bits, and the first ceil(Q / C) bits of the L bits are valid bits, and ceil() indicates rounding up.

37. A computer-readable storage medium comprising instructions, which, when executed on a computer, causes the computer to perform the method according to any one of claims 1 to 6, or any one of claims 7 to 12.

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