Signal acquisition method and terminal

Abstract

The application discloses a signal acquisition method and a terminal, and belongs to the technical field of communication. The signal acquisition method of the application comprises the following steps: a terminal acquires configuration information of a first synchronization signal block (SSB) and / or a first reference signal according to an initial access SSB; the first SSB and / or the first reference signal are detected according to the configuration information; or the first SSB and / or the first reference signal are demodulated according to the configuration information.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a signal acquisition method and a terminal. BACKGROUND

[0002] The terminal needs to use initial search when starting up or performing cell switching, and the purpose is to obtain downlink synchronization of the cell: (1) time synchronization detection; (2) frequency synchronization detection. One of the most important functions of the initial search is to find a network that can be used, and the process of the initial search is completed by a synchronization signal block (SSB), and the terminal decodes the SSB to obtain the corresponding information content, so as to perform subsequent related processing, such as transmission of control and data channels. Since the information content contained in the SSB of the initial search is different, the accuracy of related processing of different information is different, and if the accuracy is low, the performance of the entire system may be degraded. In the prior art, there is no related processing scheme for the problem that the system performance may be degraded when related processing is performed by using the SSB of the initial search. SUMMARY

[0003] The embodiments of the present application provide a signal acquisition method and a terminal, and can solve the problem that the system performance may be degraded when related processing is performed by using the SSB of the initial search.

[0004] In a first aspect, a signal acquisition method is provided, comprising:

[0005] The terminal acquires configuration information of a first SSB and / or a first reference signal according to a second synchronization signal block (SSB) of initial access;

[0006] According to the configuration information, the first SSB and / or the first reference signal is detected;

[0007] Or

[0008] According to the configuration information, the first SSB and / or the first reference signal is demodulated.

[0009] In a second aspect, a signal acquisition device is provided, comprising:

[0010] The first acquisition module is configured to acquire configuration information of a first SSB and / or a first reference signal according to a second synchronization signal block (SSB) of initial access;

[0011] The signal processing module is configured to detect the first SSB and / or the first reference signal according to the configuration information; or

[0012] The signal processing module is configured to demodulate the first SSB and / or the first reference signal according to the configuration information.

[0013] In a third aspect, a terminal is provided, which comprises a processor, a memory, and a program or instructions stored in the memory and executable in the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

[0014] In a fourth aspect, a terminal is provided, which comprises a processor and a communication interface, wherein the processor is configured to acquire configuration information of a first synchronization signal block (SSB) and / or a first reference signal according to a second SSB for initial access;

[0015] detect the first SSB and / or the first reference signal according to the configuration information;

[0016] or

[0017] demodulate the first SSB and / or the first reference signal according to the configuration information.

[0018] In a fifth aspect, a readable storage medium is provided, which stores a program or instructions, and the program or instructions, when executed by a processor, implement the steps of the method according to the first aspect.

[0019] In a sixth aspect, a chip is provided, which comprises a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the method according to the first aspect.

[0020] In a seventh aspect, a computer program / program product is provided, which is stored in a non-volatile storage medium, and the program / program product is executed by at least one processor to implement the steps of the method according to the first aspect.

[0021] In the embodiments of the present application, the terminal detects or demodulates the first SSB and / or the first reference signal according to the second SSB for initial access, so that the first SSB and / or the first reference signal can be used in combination with the second SSB for subsequent related processing, such as time synchronization, and the first SSB and / or the first reference signal can have a higher SCS, which can improve the accuracy of time compensation and avoid the decline of system performance. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0023] Figure 2 is a structural diagram of a synchronization signal block (SSB) according to the embodiments of the present application;

[0024] Figure 3is a flowchart of a signal acquisition method provided by an embodiment of the present application;

[0025] Figure 4 is a flowchart of a signal acquisition device provided by an embodiment of the present application;

[0026] Figure 5 is a structural diagram of a communication device provided by an embodiment of the present application;

[0027] Figure 6 is a structural diagram of a terminal provided by an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0029] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0030] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as in a 6th Generation (6G) communication system. th

[0031] Figure 1 ​This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as a terminal device or user equipment (UE). The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), etc. Wearable devices include smartwatches, wristbands, headphones, glasses, etc. It should be noted that this application does not limit the specific type of terminal 11. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0032] In describing the embodiments of the present invention, some concepts used in the following description will first be explained.

[0033] 1. Initial search.

[0034] UE in the initial search, including: (1) time synchronization detection, which can detect the position of the synchronization signal, the cyclic prefix (Cyclic prefix, CP) type, the cell ID number, etc.; (2) frequency synchronization detection, which can use the primary synchronization signal (Primary Synchronisation Signal, PSS), secondary synchronization signal SSS (Secondary Synchronisation Signal, SSS) and other signals for frequency offset estimation, and then correct the frequency offset. The UE performs blind search of the whole network frequency band according to the working frequency band it supports and the global synchronization channel number (Global synchronization channel number, GSCN) specified by the protocol. According to the protocol, in the FR2 frequency band (24.25G-100GHz), the UE will perform blind detection with a step of 17.28MHz (sync raster) to find the frequency band suitable for its access for access.

[0035] Two: SSB structure.

[0036] The process of initial search is completed by SSB. SSB is composed of PSS, SSS, physical broadcast channel (Physical Broadcast Channel, PBCH), demodulation reference signal (Demodulation Reference Signal, DMRS) in four consecutive orthogonal frequency division multiplexing (Orthogonal frequency division multiplex, OFDM) symbols, mainly used for downlink synchronization. Its structure is shown in Figure 2

[0037] Among them, SSB can be generally divided into cell-defined SSB and non-cell-defined SSB. The difference between the two is that cell-defined SSB carries the information of system information block (System Information Block Type1, SIB1), which can confirm the cell ID of a cell and other information. Non-cell-defined SSB does not carry SIB1 information, and it cannot confirm the cell ID of a cell. One of the main functions of non-cell-defined SSB is to measure and obtain signal-to-noise ratio (Signal Noise Ratio, SNR) and other related values.

[0038] Three, PBCH.

[0039] ​Because the internal structure of SSB is protocol standardized, when the UE finds the synchronization signal at a specific synchronization frequency point (at this time, the SCS of the SSB has been obtained), the UE can try to decode the SSB. The most important information contained in the SSB is the Master Information Block (MIB).

[0040] The information contained in the SSB can be as follows:

[0041] (1) systemFrameNumber IE: system frame number. The complete frame number requires 10 bits, while the frame number in the MIB payload has only the high 6 bits, and the low 4 bits are transmitted in the non-MIB bits in the PBCH transport block;

[0042] (2) subCarrierSpacingCommon IE: subcarrier spacing of the downlink signal in the initial access procedure, indicating the subcarrier spacing of SIB1 / other system information (OSI) / Msg2 / Msg4 of the initial access / paging message. The SCS indicated by the indication field is different from the SCS of the SSB;

[0043] (3) ssb-SubcarrierOffset IE: the number of subcarriers between the lowest subcarrier of the SSB and the nearest physical resource block (PRB);

[0044] (4) dmrs-Type A-Position IE: configuration of the physical downlink shared channel (PDSCH) DMRS reference signal;

[0045] (5) pdcch-ConfigSIB1 IE: configuration of SIB1_PDCCH (Physical Downlink Control Channel), including control resource set (CORESET) and search space configuration;

[0046] (6) cellBarred IE: radio resource control (RRC) access control parameter, indicating whether the cell is barred;

[0047] (7) intraFreqReselection IE: RRC access control parameter, indicating whether the cell allows same-frequency reselection;

[0048] (8)spare: reserved bit.

[0049] The signal acquisition method and terminal provided by the embodiments of the present application are described in detail below with reference to some embodiments and application scenarios.

[0050] As shown in Figure 3 The embodiments of the present application provide a signal acquisition method, which includes:

[0051] Step 301: A terminal acquires configuration information of a first synchronization signal block (SSB) and / or a first reference signal according to a second SSB for initial access.

[0052] Step 302: The terminal detects the first SSB and / or the first reference signal according to the configuration information.

[0053] Alternatively, the terminal demodulates the first SSB and / or the first reference signal according to the configuration information.

[0054] The second SSB is an SSB for initial access of the terminal, and the terminal acquires the configuration information of the first SSB and / or the first reference signal by receiving the second SSB. The terminal detects (or demodulates) the first SSB and / or the first reference signal according to the acquired configuration information.

[0055] As an optional embodiment, the method further includes: performing time synchronization according to the second SSB, the first SSB and / or the first reference signal.

[0056] Specifically, the time synchronization according to the second SSB, the first SSB and / or the first reference signal can include: performing coarse time synchronization according to the second SSB; and performing accurate time synchronization according to the first SSB and / or the first reference signal.

[0057] In this embodiment, after the terminal detects or demodulates the first SSB and / or the first reference signal, the terminal can use the first SSB and / or the first reference signal for subsequent related processing, for example, use the first SSB and / or the first reference signal in combination with the second SSB for time synchronization, thereby being used for subsequent transmission of control and data channels (PDCCH / PDSCH). When performing time synchronization, the UE can first use the second SSB for coarse time synchronization, and then use the first SSB and / or the first reference signal for accurate time synchronization, thereby improving the accuracy of time compensation.

[0058] The second SSB can be an SSB defining a cell; and the first SSB can be an SSB not defining a cell or an SSB defining a cell.

[0059] The implementation process of acquiring the configuration information of the first SSB according to the second SSB and acquiring the configuration information of the first reference signal according to the second SSB is described below through specific embodiments respectively.

[0060] As an optional embodiment, the configuration information of the first SSB is acquired according to the second SSB. Further, the acquiring of the configuration information of the first SSB according to the second SSB of initial access comprises:

[0061] acquiring the first configuration information of the first SSB according to the indication field of the second SSB;

[0062] and / or

[0063] acquiring the first configuration information of the first SSB according to the correspondence between the second SSB and the first configuration information of the first SSB.

[0064] The configuration information of the first SSB can be indicated by the indication field of the second SSB, or can be acquired and determined according to the correspondence between the second SSB and the first configuration information of the first SSB. The correspondence between the second SSB and the first configuration information of the first SSB can be a fixed binding relationship, for example, the network side device preconfigures or predefines the configuration information of the first SSB corresponding to the second SSB as a fixed value, and the terminal receives the second SSB and acquires the specific value of the configuration information of the first SSB, such as the position of the first SSB or the SCS of the first SSB, according to the correspondence.

[0065] Optionally, when the first configuration information of the first SSB is acquired according to the correspondence between the second SSB and the first configuration information of the first SSB, it can comprise: determining the first configuration information according to a first target value corresponding to the second SSB; wherein the first target value is used to indicate the first configuration information, and the first target value is pre-defined or pre-configured by a protocol. In this embodiment, the network side device can pre-configure or pre-define a fixed value of the first configuration information corresponding to the second SSB, for example, if the first configuration information includes the position information of the first SSB, the network side device can pre-define or pre-configure the position of the first SSB corresponding to the second SSB as a target position, and then the terminal can acquire the specific position of the first SSB according to the correspondence after receiving the second SSB.

[0066] Specifically, the first configuration information can comprise at least one of the following:

[0067] (a) a global synchronization channel number GSCN of the first SSB;

[0068] (b) a frequency domain offset of the first SSB.

[0069] (c) a time domain index position of the first SSB.

[0070] (d) a time domain offset of the first SSB.

[0071] (e) a subcarrier spacing (SCS) of the first SSB. Specifically, the SCS of the first SSB can be indicated directly through an indication field in the second SSB; or the SCS of the second SSB has a fixed correspondence with the SCS of the first SSB (for example: the SCS of the second SSB is 120K, and the SCS of the first SSB is 960K by default); or the SCS of the first SSB is predefined by a protocol or preconfigured by a base station.

[0072] In this embodiment, the first configuration information of the first SSB can include one or more of a frequency domain position, a time domain position, and a SCS of the first SSB.

[0073] The frequency domain position of the first SSB can include:

[0074] (a) a GSCN number of the first SSB: the GSCN number can be one or more, and the GSCN number can be directly indicated through an indication field of the second SSB; or the GSCN number of the first SSB can be configured corresponding to the second SSB, that is, after the terminal receives the second SSB, the GSCN number of the first SSB corresponding to the second SSB can be obtained, for example: the GSCN number of the second SSB is GSCN1, and the GSCN number of the first SSB can be configured as an offset value relative to GSCN1, so that the GSCN number of the first SSB can be obtained according to the GSCN1 and the offset value.

[0075] (b) a frequency domain offset of the first SSB. The value of the frequency domain offset can be indicated through an indication field of the second SSB; or the frequency domain offset value of the first SSB can be configured relative to the frequency domain offset value of the second SSB, and the frequency domain offset value corresponds to the second SSB, that is, after the terminal receives the second SSB, the frequency domain offset value of the first SSB corresponding to the second SSB can be obtained; the frequency domain offset can also be predefined as a fixed value.

[0076] Specifically, the frequency domain offset of the first SSB can include one of the following:

[0077] (b1) a frequency domain offset relative to a frequency domain position of the second SSB;

[0078] (b2) a frequency domain offset relative to a target point (e.g., Point A), the location of which can be obtained according to the second SSB;

[0079] (b3) a frequency domain offset relative to a Type0 PDCCH corresponding to the second SSB;

[0080] (b4) a frequency domain offset relative to a target Type0 PDCCH among at least two Type0 PDCCHs corresponding to the second SSB, the target Type0 PDCCH can be a specific one (e.g., the first one) among the at least two Type0 PDCCHs.

[0081] Wherein, the time domain location of the first SSB can include:

[0082] (c) a time domain index location of the first SSB.

[0083] The time domain index location of the first SSB can include one of the following: (c1) a time domain index location of the second SSB; (c2) a time domain index location of a target SSB received at the frequency domain location of the second SSB, wherein the target SSB is the first SSB satisfying the terminal reception power requirement. For example, the terminal receives N SSBs at the frequency domain location of the second SSB, wherein the first to N-1 SSBs do not satisfy the reception power requirement, and the Nth SSB satisfies the reception power requirement, and the Nth SSB is the target SSB, and the time domain index location of the Nth SSB is the time domain index location of the first SSB.

[0084] In this embodiment, the location of the first SSB corresponding to the current time domain index can be directly indicated by the indication field of the second SSB, which can be one or more; or the index location of the first SSB corresponding to the second SSB is configured, that is, the index location of the first SSB has a corresponding relationship with the index location of the second SSB, for example, the offset of the index location of the first SSB relative to the index location of the second SSB is configured. After the terminal receives the second SSB, the index location of the first SSB corresponding to the second SSB can be obtained, for example, by default (i.e., setting the corresponding relationship), the location of the first SSB corresponding to the current time domain index is the location of the second SSB corresponding to the current time domain index, or by default, the location of the first SSB received at the frequency location of the second SSB is the time domain index location of the first SSB, and the first SSB needs to satisfy the UE reception power requirement.

[0085] (d) a time domain offset of the first SSB. The value of the time domain offset can be indicated by the indication field of the second SSB; or can be a time domain offset value configured for the first SSB relative to the second SSB, which corresponds to the second SSB, i.e. after the terminal receives the second SSB, the time domain offset value of the first SSB corresponding to the second SSB can be obtained, and the time domain offset can also be predefined as a fixed value.

[0086] The time domain offset of the first SSB can include one of the following:

[0087] (d1) a time domain offset relative to the index of the second SSB, i.e. the time domain offset of the first SSB can be an offset relative to the index of the second SSB.

[0088] (d2) a time domain offset relative to the starting time domain position of the second SSB;

[0089] (d3) a time domain offset relative to the ending time domain position of the second SSB;

[0090] (d4) a time domain offset relative to the starting time domain position of a component of the second SSB;

[0091] (d5) a time domain offset relative to the ending time domain position of a component of the second SSB;

[0092] The component of the second SSB includes at least one Type0 PDCCH corresponding to the second SSB. The starting / ending time domain position of the component of the second SSB, for example, the starting or ending time domain position of the Type0 PDCCH corresponding to the second SSB or a specific one (e.g. the first one) of the multiple Type0 PDCCHs corresponding to the second SSB.

[0093] Optionally, when obtaining the first configuration information of the first SSB according to the indication field of the second SSB, the position of the first SSB, such as the frequency point or the raster, can be indicated by the number of bits in part or all of the indication field in the PBCH in the second SSB. Specifically, the indication field of the second SSB for indicating the first configuration information can include at least one of the following:

[0094] 1) an initial downlink bandwidth part (Bandwidth Part, BWP) subcarrier spacing indication field of the physical broadcast channel (PBCH) in the second SSB.

[0095] Wherein, the terminal can assume that there is a fixed binding relationship between the initial downlink BWP subcarrier and the SSB SCS (for example, when the SSB SCS is 960K, the SCS of the initial downlink BWP subcarrier is also 960K by default), or there is no relationship between the initial downlink BWP subcarrier and the SSB SCS, and the SCS of the initial downlink BWP subcarrier is fixed.

[0096] 2) The PDSCH-DMRS position indication field of the PBCH in the second SSB.

[0097] Wherein, the terminal can assume that there is a fixed binding relationship between the PDSCH-DMRS position indication field and the SSB SCS (for example, one SCS corresponds to one DMRS position), or there is no relationship between the PDSCH-DMRS position indication field and the SSB SCS, and the PDSCH-DMRS position is fixed.

[0098] 3) The configuration indication field of the PDCCH system information block SIB1 of the PBCH in the second SSB. That is, the pdcch-ConfigSIB1 of the PBCH in the second SSB, which is used to indicate at least part of the bit of the CORESET and the search space.

[0099] Wherein, the terminal can assume that the number of valid entries (ports) in the Coreset#0 configuration table and / or the Search space#0 configuration table is reduced.

[0100] 4) At least part of the bits in the subcarrier offset of the PBCH in the second SSB. That is, part of the bits in the ssb-SubcarrierOffset of the PBCH in the second SSB, for example: the least significant bit (LSB) bit.

[0101] 5) The cell barred indication field of the PBCH in the second SSB;

[0102] 6) The intraFreqReselection indication field of the PBCH in the second SSB;

[0103] 7) The reserved field of the PBCH in the second SSB.

[0104] The above embodiment is the implementation process of obtaining the configuration information of the first SSB according to the second SSB. The implementation process of obtaining the configuration information of the first reference signal according to the second SSB is described below.

[0105] As an optional embodiment, the first reference signal includes at least one of the following:

[0106] (1) DMRS in PBCH of the second SSB. Wherein, the DMRS in the PBCH is DMRS in one (i.e. single) PBCH; or, the DMRS in the PBCH is DMRS in at least two PBCHs; wherein, the at least two PBCHs comprise: PBCH of the first SSB and / or PBCH of the second SSB. Specifically, the DMRS in the PBCH can be DMRS in multiple PBCHs, which can be PBCHs of multiple first SSBs and / or PBCHs of multiple second SSBs.

[0107] (2) DMRS in Type0 PDCCH corresponding to the second SSB. The DMRS in the Type0 PDCCH can be DMRS in Type0 PDCCH indicated by one SSB; or, the DMRS in the Type0 PDCCH can be DMRS in Type0 PDCCH indicated by at least two SSBs; wherein, the at least two SSBs comprise: the first SSB and / or the second SSB.

[0108] (3) Tracking Reference Signal (TRS);

[0109] (4) Channel State Information Reference Signal (CSI-RS).

[0110] Optionally, the first reference signal comprises the TRS and / or the CSI-RS; the configuration information of the first reference signal is acquired according to the second SSB of initial access, comprising:

[0111] the second configuration information of the first reference signal is acquired according to the indication field of the second SSB;

[0112] and / or

[0113] the second configuration information is acquired according to the correspondence between the second SSB and the second configuration information of the first reference signal.

[0114] In this embodiment, the configuration information of the first reference signal can be indicated by the indication field of the second SSB, or can be obtained and determined by the correspondence relationship between the second SSB and the second configuration information of the first reference signal. The correspondence relationship between the second SSB and the second configuration information of the first reference signal can be a fixed binding relationship, for example, the network side device pre-configures or pre-defines the configuration information of the first reference signal corresponding to the second SSB as a fixed value, and the terminal receives the second SSB and obtains the specific value of the configuration information of the first reference signal according to the correspondence relationship, for example, the position of the first reference signal and the SCS of the first reference signal.

[0115] Optionally, according to the correspondence relationship between the second SSB and the second configuration information of the first reference signal, the second configuration information is obtained, including: determining the second configuration information according to a second target value corresponding to the second SSB; wherein the second target value is used to indicate the second configuration information, and the second target value is pre-defined or pre-configured by a protocol. In this embodiment, the network side device can pre-configure or pre-define a fixed value of the second configuration information corresponding to the second SSB, for example, the second configuration information includes position information of the first reference signal, then the first reference signal corresponding to the second SSB can be pre-defined or pre-configured as a target position, then the terminal can obtain the specific position of the first reference signal according to the correspondence relationship after receiving the second SSB.

[0116] Specifically, the second configuration information includes at least one of the following:

[0117] (a) GSCN of the first reference signal;

[0118] (b) frequency domain offset of the first reference signal;

[0119] (c) time domain offset of the first reference signal;

[0120] (d) subcarrier spacing SCS of the first reference signal. Specifically, the SCS of the first reference signal can be directly indicated by the indication field in the second SSB; or the SCS of the second SSB has a fixed correspondence relationship with the SCS of the first reference signal (for example, the SCS of the first reference signal is 960k by default when the SCS of the second SSB is 120k); or the SCS of the first reference signal is pre-defined by a protocol or pre-configured by a base station.

[0121] When the first reference signal includes the TRS and / or the CSI-RS, the second configuration information of the first reference signal can include one or more of the frequency domain position, the time domain position and the SCS of the first reference signal.

[0122] The frequency domain position of the first reference signal can include: a GSCN of the first reference signal; and / or a frequency domain offset of the first reference signal.

[0123] Specifically, the frequency domain offset of the first reference signal includes one of:

[0124] a frequency domain offset relative to a frequency domain position where the second SSB is located;

[0125] a frequency domain offset relative to a target point;

[0126] a frequency domain offset relative to a Type0 PDCCH corresponding to the second SSB;

[0127] a frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB.

[0128] Specifically, the time domain position of the first reference signal can include: a time domain offset of the first reference signal; the time domain offset of the first reference signal can include one of:

[0129] a time domain offset relative to a starting time domain position of the second SSB;

[0130] a time domain offset relative to an ending time domain position of the second SSB;

[0131] a time domain offset relative to a starting time domain position of a component of the second SSB;

[0132] a time domain offset relative to an ending time domain position of the component of the second SSB;

[0133] The component of the second SSB includes: at least one Type0 PDCCH corresponding to the second SSB.

[0134] Optionally, an indication domain of the second SSB for indicating the second configuration information includes at least one of:

[0135] an initial downlink BWP subcarrier spacing indication domain of PBCH in the second SSB;

[0136] a PDSCH-DMRS position indication domain of PBCH in the second SSB;

[0137] a configuration indication domain of PDCCH SIB1 of PBCH in the second SSB;

[0138] at least part of bits in a subcarrier offset of PBCH in the second SSB;

[0139] a cell barring indication field in the PBCH in the second SSB;

[0140] a same-frequency reselection indication field in the PBCH in the second SSB;

[0141] a reserved field in the PBCH in the second SSB.

[0142] It should be noted that the determination manner of the second configuration information of the first reference signal is similar to the determination manner of the first configuration information of the first SSB, and thus will not be described herein.

[0143] After the terminal acquires the configuration information of the first SSB and / or the first reference signal according to the second SSB, the first SSB and / or the first reference signal can be detected or demodulated according to the configuration information, so as to utilize the first SSB and / or the first reference signal for related processing, for example, utilizing the first SSB and / or the first reference signal to jointly perform time synchronization with the second SSB. The implementation process of time synchronization will be described below by taking the utilization of the first SSB and / or the first reference signal to jointly perform time synchronization with the second SSB as an example.

[0144] As an optional embodiment, the UE uses the first SSB to jointly perform time synchronization with the second SSB.

[0145] The position of the first SSB can be indicated by an indication field of the second SSB, or has a corresponding relationship (that is, a binding relationship) with the second SSB. That is, in the initial search stage, the UE finds the second SSB on the corresponding sync raster by blind detection, and performs initial access and time synchronization (coarse time synchronization) through the second SSB.

[0146] In the coarse time synchronization process, since the second SSB can use a lower SCS (such as 120 kHz), if the second SSB is used for time compensation, it can have a great influence on the subsequent transmission of data or control signals (480 / 960 kHz). Therefore, the first configuration information (such as related position information) of the first SSB (non-cell-defined SSB, 960 kHz) can be carried in the second SSB; or for each second SSB, a network side device (such as a base station) preconfigures or a protocol predefines that there is a corresponding first SSB or multiple first SSBs at certain fixed positions (such as frequency points or rasters). The first configuration information includes:

[0147] (1) frequency domain position:

[0148] (1) directly indicating or binding one or more GSCN numbers;

[0149] (2) Indicate or bind or predefine the frequency domain offset value. The frequency domain offset value can be the frequency domain offset relative to the frequency domain location of the second SSB; can also be the frequency domain offset relative to Point A; can also be the frequency domain offset relative to the specific one (for example, the first one) of the Type0 PDCCH or multiple Type0 PDCCH corresponding to the second SSB.

[0150] (II) Time domain location:

[0151] (1) Directly indicate the location of the first SSB corresponding to the current time domain index, which can be one or more;

[0152] (2) By default (i.e. binding the corresponding relationship), the location of the first SSB corresponding to the current time domain index is the location of the second SSB corresponding to the current time domain index; or by default, the location of the first SSB received at the frequency domain location of the second SSB, which needs to meet the UE receiving power requirement;

[0153] (3) Indicate or bind or predefine the time domain offset value. The time domain offset value can be the offset relative to the index of the second SSB; can also be the starting or ending time domain location of the second SSB or its component, such as the starting or ending time domain location of the specific one (for example, the first one) of the Type0 PDCCH or multiple Type0 PDCCH corresponding to the second SSB.

[0154] (III) SCS:

[0155] (1) Directly indicate the SCS of the first SSB through the indication field in the second SSB;

[0156] (2) By default, the SCS of the second SSB has a fixed binding relationship with the SCS of the first SSB (such as second SSB SCS = 120K, then the first SSB SCS is defaulted to 960k);

[0157] (3) The SCS of the first SSB is pre-defined by the protocol or pre-configured by the base station.

[0158] In this way, the UE can know the location of the corresponding first SSB (for example, non-cell-defined SSB) according to the second SSB, and the first SSB can use a higher SCS, so as to better perform time compensation (i.e. accurate time synchronization), so as to realize complete time synchronization.

[0159] As an optional embodiment: the UE uses the first reference signal to perform time synchronization in combination with the second SSB.

[0160] Manner one: through the DMRS sequence in the PBCH to assist the PSS and SSS sequence joint time compensation, thereby improving the accuracy of time compensation.

[0161] Manner two: in the initial access, assuming that the SCS of the second SSB is 120K, the initial downlink BWP / Type0 PDCCH SCS can be indicated through the related indication domain in the second SSB, which can be 480 / 960 kHz. Therefore, the DMRS sequence in the Type0 PDCCH can assist the PSS and SSS sequence joint time compensation, thereby improving the accuracy of time compensation.

[0162] Manner three: additional reference signals, i.e. CSI-RS or TRS, can be used for time synchronization. Since in the initial access, it has not yet entered the connected state, the positions of these additional reference signals need to be indicated additionally or pre-configured by the network side device or some fixed positions are pre-defined by the protocol, such as:

[0163] Frequency domain position: the indication domain of the second SSB indicates or binds the frequency domain offset value. The frequency domain offset value can be the frequency domain offset relative to the frequency domain position of the second SSB; it can also be the frequency domain offset relative to Point A; it can also be the frequency domain offset relative to Type0 PDCCH.

[0164] Time domain position: the indication domain of the second SSB indicates or binds the time domain offset value. The time domain offset value can be the time domain offset relative to the second SSB or Type0 PDCCH. The time offset can be symbol level, or slot level, or time level (such as millisecond or microsecond level).

[0165] It should be noted that the UE can use the first SSB joint second SSB for time synchronization; it can also use the first reference signal joint second SSB for time synchronization; or, use the first SSB and the first reference signal joint second SSB for time synchronization, such as through the DMRS or CSI-RS / TRS in multiple SSBs (first SSB and / or second SSB) for time compensation.

[0166] Embodiments of the present application, the terminal detects or demodulates the first SSB and / or the first reference signal according to the second SSB of the initial access, so that the first SSB and / or the first reference signal can be used for subsequent correlation processing with the second SSB, which can improve the processing accuracy and avoid the decline of system performance. For example, the first SSB and / or the first reference signal can be used for time synchronization with the second SSB, and the first SSB and / or the first reference signal can have a higher SCS, which can improve the accuracy of time compensation and avoid the decline of system performance.

[0167] It should be noted that the signal acquisition method provided by the embodiments of the present application can be executed by a signal acquisition device, or a control module in the signal acquisition device for executing the signal acquisition method. In the embodiments of the present application, the signal acquisition device executes the signal acquisition method as an example to illustrate the signal acquisition device provided by the embodiments of the present application.

[0168] As shown in Figure 4 The embodiments of the present application also provide a signal acquisition device 400, which comprises:

[0169] The first acquisition module 410 is configured to acquire configuration information of a first SSB and / or a first reference signal according to a second synchronization signal block (SSB) of initial access;

[0170] The signal processing module 420 is configured to detect the first SSB and / or the first reference signal according to the configuration information; or

[0171] Demodulate the first SSB and / or the first reference signal according to the configuration information.

[0172] As an optional embodiment, the second SSB is an SSB defining a cell;

[0173] The first SSB is an SSB not defining a cell or an SSB defining a cell.

[0174] As an optional embodiment, the first acquisition module comprises:

[0175] The first acquisition unit is configured to acquire first configuration information of the first SSB according to an indication field of the second SSB;

[0176] And / or

[0177] The second acquisition unit is configured to acquire the first configuration information according to a correspondence relationship between the second SSB and the first configuration information of the first SSB.

[0178] As an optional embodiment, the first configuration information comprises at least one of the following:

[0179] a global synchronization channel number, GSCN, of the first SSB;

[0180] a frequency domain offset of the first SSB;

[0181] a time domain index position of the first SSB;

[0182] a time domain offset of the first SSB;

[0183] a subcarrier spacing, SCS, of the first SSB.

[0184] As an optional embodiment, the frequency domain offset of the first SSB comprises one of the following:

[0185] a frequency domain offset relative to a frequency domain position where the second SSB is located;

[0186] a frequency domain offset relative to a target point;

[0187] a frequency domain offset relative to a Type0 physical downlink control channel, PDCCH, corresponding to the second SSB;

[0188] a frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB.

[0189] As an optional embodiment, the time domain offset of the first SSB comprises one of the following:

[0190] a time domain offset relative to an index of the second SSB;

[0191] a time domain offset relative to a starting time domain position of the second SSB;

[0192] a time domain offset relative to an ending time domain position of the second SSB;

[0193] a time domain offset relative to a starting time domain position of a component of the second SSB;

[0194] a time domain offset relative to an ending time domain position of the component of the second SSB;

[0195] wherein the component of the second SSB comprises at least one Type0 PDCCH corresponding to the second SSB.

[0196] As an optional embodiment, the time domain index position of the first SSB comprises one of the following:

[0197] a time domain index position of the second SSB;

[0198] a time domain index position of a target SSB received at a frequency domain position where the second SSB is located.

[0199] The first target SSB is the first SSB satisfying a terminal received power requirement.

[0200] As an optional embodiment, the indication field of the second SSB for indicating the first configuration information includes at least one of the following:

[0201] An initial downlink bandwidth part (BWP) subcarrier spacing indication field of a physical broadcast channel (PBCH) in the second SSB;

[0202] A physical downlink shared channel demodulation reference signal (PDSCH-DMRS) position indication field of the PBCH in the second SSB;

[0203] A configuration indication field of a PDCCH system information block (SIB1) of the PBCH in the second SSB;

[0204] At least part of bits in a subcarrier offset of the PBCH in the second SSB;

[0205] A cell barring indication field of the PBCH in the second SSB;

[0206] A same-frequency reselection indication field of the PBCH in the second SSB;

[0207] A reserved field of the PBCH in the second SSB.

[0208] As an optional embodiment, the second obtaining unit is specifically configured to:

[0209] Determine the first configuration information according to a first target value corresponding to the second SSB;

[0210] The first target value is used to indicate the first configuration information, and the first target value is pre-defined or pre-configured by a protocol.

[0211] As an optional embodiment, the first reference signal includes at least one of the following:

[0212] A DMRS in a PBCH of the second SSB;

[0213] A DMRS in a Type0 PDCCH corresponding to the second SSB;

[0214] A tracking reference signal (TRS);

[0215] A channel state information reference signal (CSI-RS).

[0216] As an optional embodiment, the DMRS in the PBCH is a DMRS in a PBCH.

[0217] Or

[0218] The DMRS in the PBCH is a DMRS in at least two PBCHs.

[0219] The at least two PBCHs include: a PBCH of the first SSB and / or a PBCH of the second SSB.

[0220] As an optional embodiment, the DMRS in the Type0 PDCCH is a DMRS in a Type0 PDCCH indicated by one SSB.

[0221] Or

[0222] The DMRS in the Type0 PDCCH is a DMRS in a Type0 PDCCH indicated by at least two SSBs.

[0223] The at least two SSBs include: the first SSB and / or the second SSB.

[0224] As an optional embodiment, the first reference signal includes the TRS and / or the CSI-RS.

[0225] The first obtaining module includes:

[0226] A third obtaining unit is configured to obtain second configuration information of the first reference signal according to an indication field of the second SSB.

[0227] And / or

[0228] A fourth obtaining unit is configured to obtain the second configuration information according to a correspondence between the second SSB and the second configuration information of the first reference signal.

[0229] As an optional embodiment, the second configuration information includes at least one of the following:

[0230] A GSCN of the first reference signal.

[0231] A frequency domain offset of the first reference signal.

[0232] A time domain offset of the first reference signal.

[0233] A subcarrier spacing SCS of the first reference signal.

[0234] As an optional embodiment, the frequency domain offset of the first reference signal includes one of the following:

[0235] A frequency domain offset relative to a frequency domain position of the second SSB.

[0236] a frequency domain offset relative to the target point;

[0237] a frequency domain offset relative to a Type0 PDCCH corresponding to the second SSB;

[0238] a frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB.

[0239] As an optional embodiment, the time domain offset of the first reference signal comprises one of the following:

[0240] a time domain offset relative to a starting time domain position of the second SSB;

[0241] a time domain offset relative to an ending time domain position of the second SSB;

[0242] a time domain offset relative to a starting time domain position of a component of the second SSB;

[0243] a time domain offset relative to an ending time domain position of a component of the second SSB;

[0244] The component of the second SSB comprises at least one Type0 PDCCH corresponding to the second SSB.

[0245] As an optional embodiment, the indication domain of the second SSB for indicating the second configuration information comprises at least one of the following:

[0246] an initial downlink BWP subcarrier spacing indication domain of PBCH in the second SSB;

[0247] a PDSCH-DMRS position indication domain of PBCH in the second SSB;

[0248] a configuration indication domain of PDCCH SIB1 of PBCH in the second SSB;

[0249] at least part of bits in a subcarrier offset of PBCH in the second SSB;

[0250] a cell barring indication domain of PBCH in the second SSB;

[0251] an intra-frequency reselection indication domain of PBCH in the second SSB;

[0252] a reserved domain of PBCH in the second SSB.

[0253] As an optional embodiment, the fourth obtaining unit is specifically configured to:

[0254] determine the second configuration information according to a second target value corresponding to the second SSB;

[0255] The second target value is used to indicate the second configuration information, and the second target value is pre-defined or pre-configured by a protocol.

[0256] As an optional embodiment, the apparatus further includes:

[0257] The synchronization processing module is configured to perform time synchronization according to the second SSB, and the first SSB and / or the first reference signal.

[0258] As an optional embodiment, the synchronization processing module includes:

[0259] The first processing unit is configured to perform coarse time synchronization according to the second SSB.

[0260] The second processing unit is configured to perform fine time synchronization according to the first SSB and / or the first reference signal.

[0261] Embodiments of the present application are configured to enable a terminal to detect or demodulate a first SSB and / or a first reference signal according to a second SSB used for initial access, so that the first SSB and / or the first reference signal can be used in combination with the second SSB for subsequent processing, which can improve processing accuracy and thus avoid system performance degradation. For example, the first SSB and / or the first reference signal can be used in combination with the second SSB for time synchronization, and the first SSB and / or the first reference signal can have a higher SCS, which can improve the accuracy of time compensation and thus avoid system performance degradation.

[0262] It should be noted that the signal acquisition apparatus provided by the embodiments of the present application is an apparatus capable of executing the above-mentioned signal acquisition method, and all embodiments of the above-mentioned signal acquisition method are applicable to the apparatus and can achieve the same or similar beneficial effects.

[0263] The signal acquisition apparatus in the embodiments of the present application can be an apparatus, an apparatus with an operating system, an electronic device, a component in a terminal, an integrated circuit, or a chip. The apparatus or the electronic device can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the terminal 11 listed above, and the non-mobile terminal can be a server, a Network Attached Storage (NAS), a personal computer (PC), a television (TV), a cash machine, or a self-service machine, etc., and the embodiments of the present application are not limited in this regard.

[0264] The signal acquisition apparatus provided by the embodiments of the present application can implement the above-mentioned signal acquisition methodFigures 1 to 3 The method embodiments of the application achieve the various processes and reach the same technical effects, and thus, the details are not described herein again.

[0265] Optionally, as shown in Figure 5 the application further provides a communication device 500, which includes a processor 501, a memory 502, and a program or instruction stored in the memory 502 and executable on the processor 501. For example, when the communication device 500 is a terminal, the program or instruction is executed by the processor 501 to implement the various processes of the above-mentioned signal acquisition method embodiments and achieve the same technical effects. Thus, the details are not described herein again.

[0266] The application further provides a terminal, which includes a processor and a communication interface. The processor is configured to acquire configuration information of a first synchronization signal block (SSB) and / or a first reference signal according to an initial access second SSB, detect the first SSB and / or the first reference signal according to the configuration information, or demodulate the first SSB and / or the first reference signal according to the configuration information. The terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. The various implementation processes and implementation manners of the above-mentioned method embodiment can be applied to the terminal embodiment and achieve the same technical effects. Specifically, Figure 6 To implement the hardware structure of a terminal according to the application.

[0267] The terminal 600 includes, but is not limited to, at least some of a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610.

[0268] Those skilled in the art can understand that the terminal 600 can further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 610 through a power management system, so as to realize functions such as power management, discharge management, and power consumption management through the power management system. Figure 6 The terminal structure shown in the above-mentioned figure does not constitute a limitation on the terminal. The terminal can include more or fewer components than those shown in the figure, or combine some components, or arrange different components, and thus, the details are not described herein again.

[0269] It should be understood that in the embodiments of the present application, the input unit 604 can include a graphics processor (GPU) 6041 and a microphone 6042. The graphics processor 6041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 can include a display panel 6061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 607 includes a touch panel 6071 and other input devices 6072. The touch panel 6071 is also referred to as a touch screen. The touch panel 6071 can include two parts of a touch detection device and a touch controller. The other input devices 6072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, and the like, which will not be described here.

[0270] In the embodiments of the present application, the radio frequency unit 601 receives downlink data from a network side device and processes the data by the processor 610. In addition, the radio frequency unit 601 sends uplink data to the network side device. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

[0271] The memory 609 can be used to store software programs or instructions and various data. The memory 609 can mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), and the like. In addition, the memory 609 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0272] The processor 610 can include one or more processing units; optionally, the processor 610 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 610.

[0273] The processor 610 is configured to acquire configuration information of a first synchronization signal block (SSB) and / or a first reference signal according to a second SSB of initial access.

[0274] According to the configuration information, the first SSB and / or the first reference signal are detected.

[0275] Or

[0276] According to the configuration information, the first SSB and / or the first reference signal are demodulated.

[0277] In the embodiments of the present application, the terminal detects or demodulates the first SSB and / or the first reference signal according to the second SSB of initial access, so that the first SSB and / or the first reference signal can be used in combination with the second SSB for subsequent related processing, such as time synchronization. The first SSB and / or the first reference signal can have a higher SCS, which can improve the accuracy of time compensation and thus avoid system performance degradation.

[0278] Optionally, the second SSB is a SSB defining a cell.

[0279] The first SSB is a SSB not defining a cell or a SSB defining a cell.

[0280] Optionally, the processor 610 is further configured to:

[0281] According to an indication field of the second SSB, the first configuration information of the first SSB is acquired.

[0282] And / or

[0283] According to a correspondence between the second SSB and the first configuration information of the first SSB, the first configuration information is acquired.

[0284] Optionally, the first configuration information includes at least one of the following:

[0285] A global synchronization channel number (GSCN) of the first SSB;

[0286] A frequency domain offset of the first SSB;

[0287] A time domain index position of the first SSB;

[0288] A time domain offset of the first SSB;

[0289] A subcarrier spacing (SCS) of the first SSB.

[0290] Optionally, the frequency domain offset of the first SSB includes one of the following:

[0291] a frequency domain offset relative to a frequency domain location where the second SSB is located;

[0292] a frequency domain offset relative to a target point;

[0293] a frequency domain offset relative to a Type0 physical downlink control channel (PDCCH) corresponding to the second SSB;

[0294] a frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB.

[0295] Optionally, the time domain offset of the first SSB comprises one of the following:

[0296] a time domain offset relative to an index of the second SSB;

[0297] a time domain offset relative to a starting time domain location of the second SSB;

[0298] a time domain offset relative to an ending time domain location of the second SSB;

[0299] a time domain offset relative to a starting time domain location of a component of the second SSB;

[0300] a time domain offset relative to an ending time domain location of a component of the second SSB;

[0301] wherein the component of the second SSB comprises at least one Type0 PDCCH corresponding to the second SSB.

[0302] Optionally, the time domain index location of the first SSB comprises one of the following:

[0303] a time domain index location of the second SSB;

[0304] a time domain index location of a target SSB received at a frequency domain location where the second SSB is located;

[0305] wherein the target SSB is a first SSB satisfying a terminal reception power requirement.

[0306] Optionally, an indication domain of the second SSB for indicating the first configuration information comprises at least one of the following:

[0307] an initial downlink bandwidth part (BWP) subcarrier spacing indication domain of a physical broadcast channel (PBCH) in the second SSB;

[0308] a physical downlink shared channel demodulation reference signal (PDSCH-DMRS) position indication domain of a PBCH in the second SSB;

[0309] A configuration indication field of a PDCCH system information block (SIB1) of the PBCH in the second SSB;

[0310] At least part of bits in a subcarrier offset of the PBCH in the second SSB;

[0311] A cell barring indication field of the PBCH in the second SSB;

[0312] A same-frequency reselection indication field of the PBCH in the second SSB;

[0313] A reserved field of the PBCH in the second SSB.

[0314] Optionally, the processor 610 is further configured to determine the first configuration information according to a first target value corresponding to the second SSB.

[0315] The first target value is used to indicate the first configuration information, and the first target value is pre-defined or pre-configured by a protocol.

[0316] Optionally, the first reference signal includes at least one of the following:

[0317] A DMRS in the PBCH of the second SSB;

[0318] A DMRS in a Type0 PDCCH corresponding to the second SSB;

[0319] A tracking reference signal (TRS);

[0320] A channel state information reference signal (CSI-RS).

[0321] Optionally, the DMRS in the PBCH is a DMRS in one PBCH.

[0322] Or

[0323] The DMRS in the PBCH is a DMRS in at least two PBCHs.

[0324] The at least two PBCHs include a PBCH of the first SSB and / or a PBCH of the second SSB.

[0325] Optionally, the DMRS in the Type0 PDCCH is a DMRS in one Type0 PDCCH indicated by one SSB.

[0326] Or

[0327] The DMRS in the Type0 PDCCH is a DMRS in at least two Type0 PDCCHs indicated by at least two SSBs.

[0328] The at least two SSBs include the first SSB and / or the second SSB.

[0329] Optionally, the first reference signal includes the TRS and / or the CSI-RS.

[0330] The processor is further configured to:

[0331] obtain second configuration information of the first reference signal according to an indication field of the second SSB.

[0332] and / or

[0333] obtain the second configuration information according to a correspondence between the second SSB and the second configuration information of the first reference signal.

[0334] Optionally, the second configuration information includes at least one of the following:

[0335] a GSCN of the first reference signal;

[0336] a frequency domain offset of the first reference signal;

[0337] a time domain offset of the first reference signal;

[0338] a subcarrier spacing (SCS) of the first reference signal.

[0339] Optionally, the frequency domain offset of the first reference signal includes one of the following:

[0340] a frequency domain offset relative to a frequency domain position of the second SSB;

[0341] a frequency domain offset relative to a target point;

[0342] a frequency domain offset relative to a Type0 PDCCH corresponding to the second SSB;

[0343] a frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB.

[0344] Optionally, the time domain offset of the first reference signal includes one of the following:

[0345] a time domain offset relative to a starting time domain position of the second SSB;

[0346] a time domain offset relative to an ending time domain position of the second SSB;

[0347] a time domain offset relative to a starting time domain position of a component of the second SSB.

[0348] a time domain offset relative to an ending time domain position of a component of the second SSB;

[0349] wherein the component of the second SSB comprises at least one Type0 PDCCH corresponding to the second SSB.

[0350] Optionally, an indication domain of the second SSB for indicating the second configuration information comprises at least one of:

[0351] an initial downlink BWP subcarrier spacing indication domain of PBCH in the second SSB;

[0352] a PDSCH-DMRS position indication domain of PBCH in the second SSB;

[0353] a configuration indication domain of PDCCH SIB1 of PBCH in the second SSB;

[0354] at least part of bits in a subcarrier offset of PBCH in the second SSB;

[0355] a cell barring indication domain of PBCH in the second SSB;

[0356] an intra-frequency reselection indication domain of PBCH in the second SSB;

[0357] a reserved domain of PBCH in the second SSB.

[0358] Optionally, the processor is further configured to:

[0359] determine the second configuration information according to a second target value corresponding to the second SSB;

[0360] wherein the second target value is used to indicate the second configuration information, and the second target value is pre-defined or pre-configured by a protocol.

[0361] Optionally, the processor is further configured to perform time synchronization according to the second SSB and the first SSB and / or the first reference signal.

[0362] Optionally, the processor is further configured to:

[0363] perform coarse time synchronization according to the second SSB;

[0364] perform fine time synchronization according to the first SSB and / or the first reference signal.

[0365] In the embodiments of the present application, the terminal detects or demodulates the first SSB and / or the first reference signal according to the second SSB of the initial access, so that the first SSB and / or the first reference signal can be used for subsequent correlation processing with the second SSB, for example, time synchronization, the first SSB and / or the first reference signal can have a higher SCS, which can improve the accuracy of time compensation, thereby avoiding the decline of system performance.

[0366] The embodiments of the present application also provide a readable storage medium, which stores a program or instructions, and the program or instructions are executed by a processor to realize the processes of the above signal acquisition method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0367] The processor is the processor in the terminal in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, etc.

[0368] The embodiments of the present application also provide a chip, which includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a program or instructions to realize the processes of the above signal acquisition method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0369] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0370] It should be noted that in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element. In addition, it should be pointed out that the scope of the methods and apparatuses in the embodiments of the present application is not limited to the order of functions shown or discussed, but can also include functions performed in a substantially simultaneous manner or in the opposite order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0371] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned example methods can be realized by means of software and a necessary general hardware platform, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product in essence or in the form of a part that contributes to the prior art, which is stored in a storage medium (such as a ROM / RAM, a magnetic disc, an optical disc), and includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in various embodiments of the present application.

[0372] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A signal acquisition method, characterized by, The method comprises: a terminal acquires configuration information of a first synchronization signal block (SSB) and / or a first reference signal according to a second SSB of initial access; detects the first SSB and / or the first reference signal according to the configuration information; or demodulates the first SSB and / or the first reference signal according to the configuration information; The method further comprises: performing coarse time synchronization according to the second SSB; and performing accurate time synchronization according to the first SSB and / or the first reference signal. The first reference signal comprises at least one of: a tracking reference signal (TRS); a channel state information reference signal (CSI-RS). The second SSB is a cell-defining SSB.

2. The method of claim 1, wherein, The first SSB is a non-cell-defining SSB or a cell-defining SSB. The acquiring of the configuration information of the first SSB according to the second SSB of initial access comprises:

3. The method of claim 1, wherein, acquiring first configuration information of the first SSB according to an indication field of the second SSB; and / or acquiring the first configuration information according to a correspondence between the second SSB and the first configuration information of the first SSB. The first configuration information comprises at least one of: a global synchronization channel number (GSCN) of the first SSB; 4. The method of claim 3, wherein, a frequency domain offset of the first SSB; a time domain index position of the first SSB; a time domain offset of the first SSB; a subcarrier spacing (SCS) of the first SSB. The frequency domain offset of the first SSB comprises at least one of: a frequency domain offset relative to a frequency domain position of the second SSB; 5. The method of claim 4, wherein, a frequency domain offset relative to a target point; a frequency domain offset relative to a Type0 physical downlink control channel (PDCCH) corresponding to the second SSB; a frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB. The time domain offset of the first SSB comprises at least one of: a time domain offset relative to an index of the second SSB; 6. The method of claim 4, wherein, a time domain offset relative to a starting time domain position of the second SSB; a time domain offset relative to an ending time domain position of the second SSB; a time domain offset relative to a starting time domain position of a component of the second SSB; a time domain offset relative to an ending time domain position of the component of the second SSB; The time domain index position of the first SSB comprises at least one of: a time domain index position of the second SSB; a time domain index position of a target SSB received at a frequency domain position of the second SSB; 7. The method of claim 4, wherein, The indication field of the second SSB for indicating the first configuration information comprises at least one of: an initial downlink bandwidth part (BWP) subcarrier spacing indication field of a physical broadcast channel (PBCH) in the second SSB; a physical downlink shared channel demodulation reference signal (PDSCH-DMRS) position indication field of a PBCH in the second SSB; and / or a Type0 PDCCH indication field of the second SSB.

8. The method of claim 3, wherein, ​ ​ ​ A configuration indication field of a PDCCH system information block (SIB1) of the PBCH in the second SSB; At least part of bits in a subcarrier offset of the PBCH in the second SSB; A cell barring indication field of the PBCH in the second SSB; A same-frequency reselection indication field of the PBCH in the second SSB; A reserved field of the PBCH in the second SSB.

9. The method of claim 3, wherein, The first configuration information is obtained according to a correspondence between the second SSB and the first configuration information of the first SSB, including: The first configuration information is determined according to a first target value corresponding to the second SSB; The first target value is used to indicate the first configuration information, and the first target value is pre-defined or pre-configured by a protocol.

10. The method of claim 1, wherein, The first reference signal further includes at least one of the following: A DMRS in the PBCH of the second SSB; A DMRS in a Type0 PDCCH corresponding to the second SSB.

11. The method of claim 10, wherein, The DMRS in the PBCH is a DMRS in one PBCH; Or The DMRS in the PBCH is a DMRS in at least two PBCHs; The at least two PBCHs include the PBCH of the first SSB and / or the PBCH of the second SSB.

12. The method of claim 10, wherein, The DMRS in the Type0 PDCCH is a DMRS in a Type0 PDCCH indicated by one SSB; Or The DMRS in the Type0 PDCCH is a DMRS in a Type0 PDCCH indicated by at least two SSBs; The at least two SSBs include the first SSB and / or the second SSB.

13. The method of claim 1, wherein, Configuration information of a first reference signal is obtained according to a second SSB of initial access, including: Second configuration information of the first reference signal is obtained according to an indication field of the second SSB; And / or The second configuration information is obtained according to a correspondence between the second SSB and the second configuration information of the first reference signal.

14. The method of claim 13, wherein, The second configuration information includes at least one of the following: A GSCN of the first reference signal; A frequency domain offset of the first reference signal; A time domain offset of the first reference signal; A subcarrier spacing (SCS) of the first reference signal.

15. The method of claim 14, wherein, The frequency domain offset of the first reference signal includes one of the following: A frequency domain offset relative to a frequency domain position of the second SSB; A frequency domain offset relative to a target point; A frequency domain offset relative to a Type0 PDCCH corresponding to the second SSB; A frequency domain offset relative to a target Type0 PDCCH of at least two Type0 PDCCHs corresponding to the second SSB.

16. The method of claim 14, wherein, The time domain offset of the first reference signal includes one of the following: A time domain offset relative to a starting time domain position of the second SSB; A time domain offset relative to an ending time domain position of the second SSB; A time domain offset relative to a starting time domain position of a component of the second SSB; A time domain offset relative to an ending time domain position of the component of the second SSB; The component of the second SSB comprises at least one Type0 PDCCH corresponding to the second SSB.

17. The method of claim 13, wherein, The indication field of the second SSB for indicating the second configuration information comprises at least one of the following: An initial downlink BWP subcarrier spacing indication field of PBCH in the second SSB; A PDSCH-DMRS position indication field of PBCH in the second SSB; A configuration indication field of PDCCH SIB1 of PBCH in the second SSB; At least part of bits in a subcarrier offset of PBCH in the second SSB; A cell barring indication field of PBCH in the second SSB; A same-frequency reselection indication field of PBCH in the second SSB; A reserved field of PBCH in the second SSB.

18. The method of claim 13, wherein, According to the correspondence between the second SSB and the second configuration information of the first reference signal, the second configuration information is obtained, comprising: According to a second target value corresponding to the second SSB, the second configuration information is determined; The second target value is used to indicate the second configuration information, and the second target value is pre-defined or pre-configured by a protocol.

19. A signal acquisition apparatus, characterized by comprising: Comprising: A first obtaining module is configured to obtain configuration information of a first SSB and / or a first reference signal according to a second SSB for initial access; A signal processing module is configured to detect the first SSB and / or the first reference signal according to the configuration information; Or Demodulate the first SSB and / or the first reference signal according to the configuration information; A synchronization processing module is configured to perform coarse time synchronization according to the second SSB, and perform accurate time synchronization according to the first SSB and / or the first reference signal; The first reference signal comprises at least one of the following: A tracking reference signal (TRS); A channel state information reference signal (CSI-RS).

20. The apparatus of claim 19, wherein, The second SSB is a SSB defining a cell; The first SSB is a SSB not defining a cell or a SSB defining a cell.

21. The apparatus of claim 19, wherein, The first obtaining module comprises: A first obtaining unit is configured to obtain first configuration information of the first SSB according to an indication field of the second SSB; And / or A second obtaining unit is configured to obtain the first configuration information according to the correspondence between the second SSB and the first configuration information of the first SSB.

22. The apparatus of claim 21, wherein, The first configuration information comprises at least one of the following: A global synchronization channel number (GSCN) of the first SSB; A frequency domain offset of the first SSB; A time domain index position of the first SSB; A time domain offset of the first SSB; A subcarrier spacing (SCS) of the first SSB.

23. The apparatus of claim 22, wherein, The frequency domain offset of the first SSB comprises one of the following: A frequency domain offset relative to a frequency domain position where the second SSB is located; A frequency domain offset relative to a target point; A frequency domain offset relative to a Type0 PDCCH corresponding to the second SSB; A frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB.

24. The apparatus of claim 22, wherein, The time domain offset of the first SSB comprises one of the following: a time domain offset relative to an index of the second SSB; a time domain offset relative to a starting time domain position of the second SSB; a time domain offset relative to an ending time domain position of the second SSB; a time domain offset relative to a starting time domain position of a component of the second SSB; a time domain offset relative to an ending time domain position of the component of the second SSB; wherein the component of the second SSB comprises at least one Type0 PDCCH corresponding to the second SSB.

25. The apparatus of claim 22, wherein, the time domain index position of the first SSB comprises one of: the time domain index position of the second SSB; the time domain index position of a target SSB received at a frequency domain position of the second SSB; wherein the target SSB is a first SSB satisfying a terminal reception power requirement.

26. The apparatus of claim 21, wherein, an indication domain of the second SSB for indicating the first configuration information, comprising at least one of: an initial downlink bandwidth part (BWP) subcarrier spacing indication domain of a physical broadcast channel (PBCH) in the second SSB; a physical downlink shared channel (PDSCH-DMRS) position indication domain of a demodulation reference signal (DMRS) of the PBCH in the second SSB; a configuration indication domain of a physical downlink control channel (PDCCH) system information block (SIB1) of the PBCH in the second SSB; at least part of bits in a subcarrier offset of the PBCH in the second SSB; a cell barring indication domain of the PBCH in the second SSB; a same-frequency reselection indication domain of the PBCH in the second SSB; a reserved domain of the PBCH in the second SSB.

27. The apparatus of claim 21, wherein, The second obtaining unit is specifically configured to: determine the first configuration information according to a first target value corresponding to the second SSB; wherein the first target value is used for indicating the first configuration information, and the first target value is protocol predefined or preconfigured.

28. The apparatus of claim 19, wherein, The first reference signal further comprises at least one of: a DMRS in a PBCH of the second SSB; a DMRS in a Type0 PDCCH corresponding to the second SSB.

29. The apparatus of claim 28, wherein, The DMRS in the PBCH is one DMRS in one PBCH; or The DMRS in the PBCH is one DMRS in at least two PBCHs; wherein the at least two PBCHs comprise a PBCH of the first SSB and / or a PBCH of the second SSB.

30. The apparatus of claim 28, wherein, The DMRS in the Type0 PDCCH is one DMRS in one Type0 PDCCH indicated by one SSB; or The DMRS in the Type0 PDCCH is one DMRS in at least two Type0 PDCCHs indicated by at least two SSBs; wherein the at least two SSBs comprise the first SSB and / or the second SSB.

31. The apparatus of claim 19, wherein, The first obtaining module comprises: a third obtaining unit, configured to obtain second configuration information of the first reference signal according to an indication domain of the second SSB; and / or a fourth obtaining unit, configured to obtain the second configuration information according to a correspondence between the second SSB and the second configuration information of the first reference signal.

32. The apparatus of claim 31, wherein, The second configuration information comprises at least one of: a GSCN of the first reference signal; a frequency domain offset of the first reference signal; a time domain offset of the first reference signal; a subcarrier spacing (SCS) of the first reference signal.

33. The apparatus of claim 32, wherein, The frequency domain offset of the first reference signal comprises one of: a frequency domain offset relative to a frequency domain position of the second SSB; a frequency domain offset relative to a target point; a frequency domain offset relative to a Type0 PDCCH corresponding to the second SSB; a frequency domain offset relative to a target Type0 PDCCH in at least two Type0 PDCCHs corresponding to the second SSB.

34. The apparatus of claim 32, wherein, The time domain offset of the first reference signal comprises one of: a time domain offset relative to a starting time domain position of the second SSB; a time domain offset relative to an ending time domain position of the second SSB; a time domain offset relative to a starting time domain position of a component of the second SSB; a time domain offset relative to an ending time domain position of the component of the second SSB; wherein the component of the second SSB comprises at least one Type0 PDCCH corresponding to the second SSB.

35. The apparatus of claim 31, wherein, An indication domain of the second SSB for indicating the second configuration information comprises at least one of: an initial downlink BWP subcarrier spacing indication domain of a PBCH in the second SSB; a PDSCH-DMRS position indication domain of the PBCH in the second SSB; a configuration indication domain of a PDCCH SIB1 of the PBCH in the second SSB; at least part of bits in a subcarrier offset of the PBCH in the second SSB; a cell barring indication domain of the PBCH in the second SSB; a same frequency reselection indication domain of the PBCH in the second SSB; a reserved domain of the PBCH in the second SSB.

36. The apparatus of claim 31, wherein, The fourth obtaining unit is specifically configured to: determine the second configuration information according to a second target value corresponding to the second SSB; wherein the second target value is used for indicating the second configuration information, and the second target value is pre-defined or pre-configured by a protocol.

37. A terminal, characterized by A processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions are executed by the processor to implement the steps of the signal obtaining method according to any one of claims 1 to 18.

38. A readable storage medium, characterized by, A readable storage medium stores a program or instructions, wherein the program or instructions are executed by a processor to implement the steps of the signal obtaining method according to any one of claims 1 to 18.

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