Signal transmission methods and apparatuses, and storage medium

Abstract

Provided are signal transmission methods and apparatuses, and a storage medium. A method comprises: receiving at least one of a first signal, a second signal, a third signal and a first channel, wherein the first signal, the second signal and the third signal are all reference signals, and the first channel carries first system information.

Description

Signal transmission methods, devices and storage media

[0001] This disclosure claims priority to Chinese patent application No. 202510121437.9, filed on January 24, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a signal transmission method, apparatus and storage medium. Background Technology

[0003] With the rapid development of communication technology, future communication systems are gradually moving towards a more diversified and intelligent stage. In this process, the access of different terminal types and the deployment scenarios of large-scale terminals have become critical issues that urgently need to be addressed. In the current 5G New Radio (5G NR) system, terminals mainly access the system through the initial bandwidth part (BWP) where the synchronization signal block (SSB) is located. This access method simplifies the access process to some extent, but it also brings the problem of limited access capacity.

[0004] Furthermore, low-capability terminals also face certain challenges when accessing the network. Due to hardware or software limitations, these terminals may have relatively low bandwidth processing capabilities. However, in current 5G NR systems, low-capability terminals still need to detect SSBs and receive system information blocks (SIBs) during access. The transmission of this information often occupies a significant amount of bandwidth, which may exceed the processing capacity of low-capability terminals, leading to limited access capacity.

[0005] In addition, in 5G NR, since the SSB is bundled with the primary synchronization signals (PSS), secondary synchronization signals (SSS), and physical broadcast channel (PBCH), the network needs to send the entire SSB when sending the reference signal for measurement, but the terminal only needs the PSS or SSS when measuring. This leads to an increase in network overhead and an increase in terminal decoding complexity or power consumption. Summary of the Invention

[0006] On the one hand, a signal transmission method is provided, applied to a first node, the method comprising:

[0007] Receive at least one of the following: a first signal, a second signal, a third signal, and a first channel;

[0008] Among them, the first signal, the second signal, and the third signal are all reference signals; the first channel carries the first system information.

[0009] On the other hand, a signal transmission method is provided for application to a second node, the method comprising:

[0010] Send at least one of the following: a first signal, a second signal, a third signal, and a first channel;

[0011] Among them, the first signal, the second signal, and the third signal are all reference signals; the first channel carries the first system information.

[0012] On another front, a signal transmission device is provided for use at a first node, the device comprising:

[0013] A communication module for receiving at least one of a first signal, a second signal, a third signal, and a first channel;

[0014] Among them, the first signal, the second signal, and the third signal are all reference signals; the first channel carries the first system information.

[0015] On another front, a signal transmission device is provided for use in a second node, the device comprising:

[0016] A communication module for transmitting at least one of a first signal, a second signal, a third signal, and a first channel;

[0017] Among them, the first signal, the second signal, and the third signal are all reference signals; the first channel carries the first system information.

[0018] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; and the processor implements the signal transmission method of any of the above embodiments when executing the computer program instructions.

[0019] In another aspect, a computer-readable storage medium is provided, including a non-transitory computer-readable storage medium storing computer program instructions that, when executed on a computer (e.g., a communication device or a signal transmission device), implement the signal transmission method of any of the above embodiments.

[0020] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed, implement the signal transmission method of any of the above embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are merely drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings.

[0022] Figure 1 is a schematic diagram of the architecture of a communication system according to some embodiments.

[0023] Figure 2 is a flowchart of a signal transmission method according to some embodiments.

[0024] Figure 3 is a schematic diagram of the timing relationship of a signal according to some embodiments.

[0025] Figure 4 is a schematic diagram of a time slot index for a signal according to some embodiments.

[0026] Figure 5 is a schematic diagram of the timing relationship of another signal provided according to some embodiments.

[0027] Figure 6 is a schematic diagram of a beam pattern of a signal according to some embodiments.

[0028] Figure 7 is a schematic diagram of the timing relationship of another signal provided according to some embodiments.

[0029] Figure 8 is a schematic diagram of a signal transceiver node provided according to some embodiments.

[0030] Figure 9 is a schematic diagram of a transceiver node for another signal provided according to some embodiments.

[0031] Figure 10 is a schematic diagram of a transceiver node for another signal provided according to some embodiments.

[0032] Figure 11 is a flowchart of another signal transmission method provided according to some embodiments.

[0033] Figure 12 is a block diagram of a signal transmission device according to some embodiments.

[0034] Figure 13 is a block diagram of another signal transmission device according to some embodiments.

[0035] Figure 14 is a block diagram of a communication device according to some embodiments. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, the technical solutions of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0037] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0038] It should be noted that in this disclosure, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0039] With the rapid development of communication technology, future communication systems are gradually moving towards a more diversified and intelligent stage. In this process, the access of different terminal types and the deployment scenarios of large-scale terminals have become key issues that urgently need to be addressed. In the current 5G NR system, terminals mainly access the network through the initial BWP located in the SSB. This access method simplifies the access process to some extent, but it also brings the problem of limited access capacity.

[0040] Furthermore, low-capability terminals also face certain challenges when accessing the network. Due to hardware or software limitations, these terminals may have relatively low bandwidth processing capabilities. However, in current 5G NR systems, low-capability terminals still need to detect SSBs and receive SIBs during access. The transmission of this information often occupies a significant amount of bandwidth, which may exceed the processing capacity of low-capability terminals, leading to limited access capacity.

[0041] In addition, in 5G NR, since the SSB is bundled with the PSS, SSS and PBCH, the network needs to send the entire SSB when sending the reference signal for measurement, but the terminal only needs the PSS or SSS when measuring. This leads to an increase in network overhead and an increase in terminal decoding complexity or power consumption.

[0042] In view of this, this disclosure provides a signal transmission method, which includes receiving at least one of a first signal, a second signal, a third signal, and a first channel. Here, the first signal, the second signal, and the third signal are all reference signals. The first channel carries first system information. In this way, by accurately receiving key signals and channels such as the first signal, the second signal, the third signal, and at least one of the first channel, the current communication environment can be understood, and resource allocation can be dynamically adjusted to effectively alleviate network congestion, improve access capacity, and reduce power consumption on the network or terminal side.

[0043] The signal transmission method provided in this disclosure can be applied to systems with various communication standards. For example, the systems to which the signal transmission method provided in this disclosure can be applied include, but are not limited to, long term evolution (LTE) systems, various versions based on LTE evolution, 5th generation (5G) communication systems, wireless fidelity (Wi-Fi) systems, 3GPP-related communication systems, ambient internet of things (Ambient IoT) systems, or systems integrating multiple systems. In addition, the signal transmission method provided in this disclosure can also be applied to future-oriented communication systems (such as 6th generation mobile communication networks (6G) and 7th generation mobile communication networks (7G) systems), and this disclosure does not limit this application.

[0044] The network architecture of the mobile communication network (including but not limited to existing mobile communication networks and future mobile communication networks) in this disclosure embodiment may include at least a first communication node and a second communication node. In the uplink, the first communication node may be a terminal-side device (e.g., including but not limited to a terminal), and the second communication node may be a network-side device (e.g., including but not limited to a base station). In the downlink, the second communication node may be a terminal-side device (e.g., including but not limited to a terminal), and the first communication node may be a network-side device (e.g., including but not limited to a base station). Here, the first communication node may be referred to as the first node, and the second communication node may be referred to as the second node.

[0045] For example, taking a first node as a terminal and a second node as a base station, Figure 1 is a schematic diagram of the architecture of a communication system according to some embodiments. The communication system includes a terminal 10 and a base station 20. The terminal 10 and the base station 20 are communicatively connected. There can be one or more terminals 10 and base stations 20, and the number is not limited.

[0046] Here, terminal 10 can be a terminal-side device (such as, but not limited to, a terminal, an IoT device), and base station 20 can be a network-side device (such as, but not limited to, a base station, an access network device, a relay, an auxiliary communication node, etc.).

[0047] In some embodiments, the random access type supported by the terminal for random access procedures with network devices is a capability of the terminal, and different terminals may support different random access types.

[0048] In some embodiments, the terminal may be a traditional terminal, a 5G lightweight user terminal (RedCap terminal), etc.

[0049] In some embodiments, a terminal can be a device with wireless transceiver capabilities. A terminal can be a passive device, an ambient IoT device, a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of this disclosure do not limit the application scenarios. A terminal may also be referred to as a tag, user, user equipment (UE), access terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, or UE device, etc., and the embodiments of this disclosure do not limit this to these terms.

[0050] In some embodiments, the base station may be a base station in Long Term Evolution (LTE), Long Term Evolution Advanced (LTEA), or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, home base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, relays, transmit receive points (TRPs), wireless fidelity (WIFI) devices, UEs, and other network-side devices. This disclosure does not limit this aspect.

[0051] It should be noted that Figure 1 is only an exemplary framework diagram. The number of devices included in Figure 1 and the names of each device are not limited. In addition to the devices shown in Figure 1, the communication system may also include other devices, such as core network devices. This disclosure does not impose any restrictions on this.

[0052] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0053] This disclosure provides a signal transmission method applied to a first node. As shown in Figure 2, the method includes the following steps:

[0054] S101, Receive at least one of the first signal, the second signal, the third signal, and the first channel.

[0055] Here, the first signal, the second signal, and the third signal are all reference signals. The first channel carries the first system information.

[0056] In this disclosure, "receive" may also mean monitoring, detection, decoding, etc. in some embodiments or examples, which will not be elaborated further below.

[0057] In some embodiments, carrying the first system information may also be expressed as indicating the first system information, configuring the first system information, or determining the first system information, etc.

[0058] In some embodiments, receiving at least one of the first signal, the second signal, the third signal, and the first channel includes one of the following methods:

[0059] Method 1: First receive at least one of the first signal, the second signal, and the first channel, and then receive the third signal.

[0060] For example, you can receive the first signal first, then the third signal. Alternatively, you can receive the second signal first, then the third signal. Or, you can receive the first channel first, then the third signal. Alternatively, you can receive the first and second signals first, then the third signal. Alternatively, you can receive the first signal and the first channel first (the first signal can be received before or after the first channel), then the third signal. Alternatively, you can receive the second signal and the first channel first (the first channel can be received before or after the second signal), then the third signal. Alternatively, you can receive the first signal, the second signal, and the first channel first (the receiving order of the first signal, second signal, and first channel can also be other, such as the first signal, the first channel, and the second signal; there is no restriction on this), then the third signal.

[0061] Method 2: First receive the first signal, then receive the second signal and / or the first channel, and then receive the third signal.

[0062] For example, you can receive the first signal first, then the second signal and the first channel, and then the third signal. Or, you can receive the first signal first, then the second signal, and then the third signal. Or, you can receive the first signal first, then the first channel, and then the third signal.

[0063] Method 3: First receive the first signal and / or the first channel, then receive the second signal.

[0064] For example, you can receive the first signal first, then the second signal; or, you can receive the first signal and the first channel first, then the second signal; or, you can receive the first channel first, then the second signal.

[0065] In some embodiments, the signal or channel described above includes at least one of the following:

[0066] The first signal includes first identification information, and the second signal includes second identification information;

[0067] The first signal includes first identification information, the second signal includes part of the second identification information, and the third signal includes the remaining part of the second identification information.

[0068] The first signal includes a portion of the first identification information, and the second signal includes the remaining portion of the first identification information.

[0069] The first signal is used for at least one of synchronization, measurement, cell search, and access in the first cell; the second signal is used for at least one of synchronization, measurement, cell search, and access in the second cell (the second cell includes public cells and non-public cells);

[0070] The first signal and the second signal are used for at least one of the following in the first cell: synchronization, measurement, cell search, and access; the third signal is used for at least one of the following in the second cell: synchronization, measurement, cell search, and access.

[0071] The first signal is based on the ZC sequence, and the second signal is based on the m sequence or the gold sequence.

[0072] Here, the identification information is an ID or index, including cell identification information, carrier identification information, frequency band identification information, partial bandwidth (BWP) identification information, frequency point identification information, beam identification information, etc.

[0073] In some embodiments, the first cell is a first type of cell, or a cell with a large coverage area, and the second cell is a second type of cell, or a cell with a small coverage area. A cell may be defined by a carrier, beam, frequency band, and identifier.

[0074] In some embodiments, the above-described signal or channel satisfies at least one of the following:

[0075] The first signal and the second signal are correlated;

[0076] There is a correlation between the first channel and the second signal;

[0077] There is a correlation between the first channel and the first signal;

[0078] The third signal is correlated with the first channel.

[0079] In some embodiments, the association between the above-mentioned signals or channels includes at least one of the following:

[0080] The correlation between the time-domain locations of signals;

[0081] The correlation between the frequency domain positions of the signal;

[0082] The correlation between signal periods;

[0083] The correlation of signal beams;

[0084] The correlation between the cells corresponding to the signals;

[0085] Quasi-co-location (QCL) relationships between signals.

[0086] In some embodiments, the correlation between signal time-domain locations includes at least one of the following:

[0087] There is an offset between the time domain position of the first signal and the time domain position of the second signal;

[0088] The time domain position of the second signal is determined based on the time domain position and / or offset of the first signal;

[0089] The time domain position of the first channel is continuous with or offset from the time domain position of the second signal;

[0090] The time-domain position of the first channel is determined based on the time-domain position and / or offset of the second signal;

[0091] The time domain position of the first channel and the time domain position of the first signal are either continuous or offset;

[0092] The time-domain position of the first channel is determined based on the time-domain position and / or offset of the first signal;

[0093] The time-domain location of the third signal is determined based on the first channel.

[0094] In some embodiments, the correlation between the frequency domain locations of the signals includes at least one of the following:

[0095] The first signal, the second signal, and the first channel have the same frequency.

[0096] The second signal has the same frequency as the first channel;

[0097] The frequency of the first channel or the second signal is different from the frequency of the first signal or there is an offset;

[0098] At least one frequency point of the first channel or the second signal is associated with the first signal;

[0099] At least one frequency point of the first channel is associated with the first signal or the second signal;

[0100] The frequency of the third signal is determined based on the first channel;

[0101] The frequency of the third signal is determined based on the first channel through a bitmap or an index indicator.

[0102] The bandwidth occupied by the first signal, the second signal, and the first channel is all less than or equal to the first preset value;

[0103] The first signal and the second signal have the same bandwidth;

[0104] The second signal has the same bandwidth as the first channel;

[0105] The first signal, the second signal, and the first channel have the same bandwidth;

[0106] The bandwidth of the second signal is determined based on the first channel;

[0107] The bandwidth of the third signal is determined based on the bandwidth of the first channel.

[0108] Here, the bandwidth occupied by the channel is reflected in the number of frequency domain resources, the number of resource blocks (RBs), the number of resource elements (REs), the number of subcarriers, and the Hertz (Hz).

[0109] In some embodiments, the frequency points of a signal include the center frequency point of the signal, the upper boundary frequency point of the signal, the lower boundary frequency point of the signal, the frequency point of the channel grid where the signal is located, the center subcarrier where the signal is located, the upper and lower boundary subcarriers where the signal is located, the carrier where the signal is located, and the frequency band where the signal is located.

[0110] In some embodiments, the correlation between the periods of the signals includes at least one of the following:

[0111] The period of the first signal is greater than or equal to the period of the second signal;

[0112] The period of the first signal is greater than or equal to the period of the first channel;

[0113] The period of the first channel is less than or equal to the period of the second signal;

[0114] The period of the second or third signal is determined based on the first channel.

[0115] In some embodiments, the beam association of the signal includes at least one of the following:

[0116] The number of beams of the first signal is less than or equal to the number of beams of the second signal;

[0117] The beam index of the first signal is a subset of the beam index of the second signal;

[0118] The beam index of the first signal overlaps with the beam index of the second signal;

[0119] The second signal and the first signal have the same number of beams or beam index;

[0120] The second signal or the first signal has the same beam information as or is related to the beam information of the first channel;

[0121] The beam information of the second signal or the beam information of the third signal is determined based on the first channel.

[0122] In some embodiments, beam information includes at least one of the following: beam index, number of beams, beam position, and beam pattern.

[0123] In some embodiments, beam index overlap means that the beam indices of two signals are partially the same and may be partially different. For example, if the beam indices of the first signal are 0, 1, 2, 3 and the beam indexes of the second signal are 1, 2, 3, 4, then beam indices 1, 2, and 3 overlap. Similarly, if the beam indices of the first signal are 0, 1, 2, 3 and the beam indexes of the second signal are 0, 1, 2, 3, 4, then beam indices 0, 1, 2, and 3 overlap and have a subset relationship, because {0, 1, 2, 3} is a subset of {0, 1, 2, 3, 4}.

[0124] Here, the beam pattern includes at least one of the following: beam time domain position, beam frequency domain position, beam period, beam offset, number of beams, and beam index.

[0125] In some embodiments, the first system information indicated by the first channel includes at least one of the following:

[0126] System frame number information;

[0127] Frequency configuration information;

[0128] Bandwidth configuration information;

[0129] Second identification information;

[0130] Subcarrier spacing;

[0131] Configuration information for the third signal;

[0132] Configuration information for the random access channel (RACH);

[0133] Configuration information for the paging channel;

[0134] The second system message corresponds to the physical control channel (e.g., physical downlink control channel, PDCCH) configuration information.

[0135] In some embodiments, the frequency point configuration information includes at least one of the following: at least one frequency point of an initial partial bandwidth, at least one frequency point corresponding to a second cell, at least one frequency point of a third signal, at least one frequency point of system information, at least one frequency point of a paging message, and at least one frequency point of a random access channel.

[0136] Here, the frequency points of the channel include at least one of the following: the center frequency point of the channel, the upper boundary frequency point of the channel, the lower boundary frequency point of the channel, the frequency point of the channel raster (including the synchronization raster), the center subcarrier of the channel, the upper and lower boundary subcarriers of the channel, the carrier in which the channel is located, and the frequency band in which the channel is located.

[0137] For example, frequency point configuration information indicates the band index and initial bandwidth index within a certain frequency range. Frequency point configuration information indicates at least one of the following: bandwidth 1M, 5M, 10M, 20M, 50M, 100M, 200M, 400M; or at least one of the following physical resource blocks (PRBs): n1, n2, n3, n4, etc.

[0138] Here, subcarrier spacing refers to the subcarrier spacing of the third signal / system information (other SI, OSI) / paging channel / random access channel (RACH), or the subcarrier spacing of the access cell, or the subcarrier spacing of the corresponding carrier, or the subcarrier spacing of the initial BWP.

[0139] In some embodiments, the bandwidth configuration information includes at least one of the following: bandwidth of at least one initial partial bandwidth, bandwidth corresponding to at least one second cell, bandwidth of at least one third signal, bandwidth of at least one other system information, bandwidth of at least one paging message, bandwidth of at least one random access channel, and bandwidth of at least one specific frequency domain.

[0140] In some embodiments, the configuration information for the random access channel includes at least one of the following:

[0141] Preamble index configuration;

[0142] The number of frequency domain resources for random access channels;

[0143] The root sequence index of the random access sequence;

[0144] The maximum number of transmissions in the random access preamble sequence;

[0145] The number of times random access is attempted (if no response is received after this number is reached, the UE will declare random access failed).

[0146] In some embodiments, the number of random access opportunities is determined based on at least one of the following: a first signal, a second signal, a third signal, and a first channel.

[0147] In some embodiments, the configuration information of the third signal includes at least one of the following: the period of the third signal, the time domain resources of the third signal, and the frequency domain resources of the third signal.

[0148] In some embodiments, the paging channel configuration information includes configuration information of the physical shared channel (e.g., the physical downlink shared channel (PDSCH)) and / or the physical control channel.

[0149] In some embodiments, the configuration information of the physical control channel includes at least one of the following: frequency domain resources; reference frequency point; offset from the reference frequency point; frequency band number; control resource set index; aggregation level; time domain resources; search space index (search space identification information); time domain offset; period; scrambling method.

[0150] Here, frequency domain resources include the quantity and location of resources in the frequency domain. Time domain resources include the quantity and location of resources in the time domain, such as the number or location of symbols. The configuration information of the physical control channel can also be referred to as the physical control channel configuration information corresponding to the second system message.

[0151] In some embodiments, the configuration information of the physical control channel is determined based on frequency domain location or subcarrier spacing.

[0152] It is understandable that physical control channel (PCC) configuration information is defined based on frequency domain location, such as a frequency band, a carrier, a frequency point, or a bandwidth. The PCC configuration information differs across different bands, carriers, frequency points, and bandwidths. At the very least, the bandwidth or the number of PRBs may differ.

[0153] In the first frequency domain, the bandwidth of the first physical control channel is defined as N1 RBs. In the second frequency domain, the bandwidth of the second physical control channel is a multiple of the bandwidth of the first physical control channel.

[0154] In the first frequency domain, the bandwidth of the first physical control channel is defined as N1 RBs, corresponding to, for example, 5M or 3M. In the second frequency domain, the bandwidth of the second physical control channel is greater than or equal to the bandwidth of the first physical control channel.

[0155] In the first frequency domain, the bandwidth of the first physical control channel defined based on the first sub-carrier space (SCS) is N1 RBs, and the bandwidth of the first physical control channel defined based on the second SCS is N2 RBs. In the second frequency domain, the bandwidth of the second physical control channel is a multiple of the bandwidth of the first physical control channel.

[0156] In the first frequency domain, the bandwidth of the first physical control channel defined based on the first SCS is N1 RBs, and the bandwidth of the first physical control channel defined based on the second SCS is N2 RBs, corresponding to, for example, 5M or 3M. In the second frequency domain, when the same SCS is used, the bandwidth of the second physical control channel is greater than or equal to the bandwidth of the first physical control channel.

[0157] The physical control channel configuration information (second physical control channel) of other access cells is configured based on the first physical control channel, which can save overhead.

[0158] In some embodiments, the configuration information for the physical shared channel includes at least one of the following:

[0159] Transport block size;

[0160] Modulation and coding scheme (MCS);

[0161] Number of resource blocks;

[0162] Number of time slots;

[0163] Number of symbols.

[0164] In some embodiments, the RACH configuration information includes at least one of the following:

[0165] Random access opportunity (RO);

[0166] Configuration information for message 1 (msg1) during the four-step random access process;

[0167] Configuration information for message 2 (msg2) during the four-step random access process;

[0168] Configuration information for message 3 (msg3) during the four-step random access process;

[0169] Configuration information for message 4 (msg4) during the four-step random access process;

[0170] Configuration information for message A (msgA) during the two-step random access process;

[0171] Configuration information for message B (msgB) during the two-step random access process.

[0172] In some embodiments, configuration information for RACH may be indicated in system messages.

[0173] In some embodiments, a first RACH configuration information is indicated in the first channel, and a second RACH configuration information is indicated in the system information.

[0174] In some embodiments, the configuration information of the third signal, the configuration information of the random access channel, the configuration information of the paging channel, or the configuration information of the physical control channel corresponding to the second system message is associated with at least one of the following: frequency point configuration information, bandwidth configuration information, second identification information, and subcarrier spacing.

[0175] In some embodiments, the first signal or the second signal includes a first sequence and a second sequence, wherein the first sequence and the second sequence satisfy at least one of the following:

[0176] The first and second sequences are repeating sequences;

[0177] The first sequence and the second sequence occupy consecutive symbols (e.g., the first sequence and the second sequence each occupy one consecutive symbol);

[0178] The first and second sequences have the same length;

[0179] The first and second sequences are ZC sequences or pseudo-random sequences (the first and second sequences have different roots);

[0180] The frequency domain bandwidth of the first sequence and the second sequence is less than or equal to a preset value. For example, the frequency domain bandwidth of the first sequence and the second sequence is less than or equal to 11 / 12 RBs, or occupies no more than 131 subcarriers.

[0181] The first and second sequences each carry partial identification information; both carry a complete set of identification information, such as the identification information of a super cell.

[0182] In some embodiments, the first channel or the third signal is received after a period of time has elapsed since the target signal or channel transmitted by the first node was transmitted.

[0183] In some embodiments, the second signal determines whether it exists, is sent, received, or detected based on the first signal.

[0184] In some embodiments, the transmission of a second signal is determined by the sequence of a first signal. If the first signal transmits the first sequence, the second signal is either transmitted or present. If the first signal transmits the second sequence, the second signal is either not transmitted or not present.

[0185] In some embodiments, when the first signal is a ZC sequence, the transmission of the second signal is determined by the root index or cyclic shift (CS) value of the ZC sequence.

[0186] In some embodiments, both the first signal and the second signal are defined based on the subframe, time slot, and frame number.

[0187] Here, upon receiving the first and second signals, frame synchronization, time slot synchronization, half-frame synchronization, or other levels of coarse synchronization can be achieved. However, the complete frame number cannot be obtained. For example, suppose the first signal is transmitted once every 32 frames, i.e., the period is 320ms. By receiving the first signal, it can be determined that the first signal was sent at a position that is a multiple of 32 frame numbers, but the specific frame number cannot be determined.

[0188] For example, the second signal transmission period within 320ms is 80ms / 40ms, meaning there are 4 / 8 second signal transmissions within 320ms. The second signals transmitted every 80ms / 40ms are distinguished by different scrambling methods, which can determine which radio frame or half-frame within 320ms, and even complete time slot or symbol synchronization.

[0189] In some embodiments, there is an offset between the second signal and the first signal.

[0190] In some embodiments, the offset is defined based on the SCS: based on the SCS of the first signal, the second signal has an offset of X time slots between it and the first signal. For example, if the SCS is 15kHz, the offset is X slots; if the SCS is 30kHz, the offset is 2X slots.

[0191] In some embodiments, the offset is defined based on milliseconds, such as 40ms. Therefore, regardless of the SCS of the first signal, the second signal can be found some time after the offset.

[0192] In some embodiments, offset is defined based on the burst set of the first signal and the burst set of the second signal. Offset is defined as the time interval between the first signal position or the last signal end position of the burst set of the first signal and the first signal position of the burst set of the second signal.

[0193] In some embodiments, the first signal, second signal, third signal, or first channel is defined based on a burst set, meaning that at least one of the signals or channels is contained within a burst set of a given signal or channel. At least one of the signals or channels within the burst set has different index values, different beam information, or carries the same identification information.

[0194] In some embodiments, offset is defined based on other parameters, such as SCS and band position.

[0195] For example, based on 15kHz, the offset is X slots, and based on 30kHz, the offset is either X slots or 2X slots.

[0196] For example, based on band n1, its offset is X ms, and based on band n2, its offset is Y ms.

[0197] In some embodiments, the first signal is a periodic signal, with supported periods including 80, 160, 320, 640, 1280, and 2560 milliseconds (ms), slots, subframes, frames, or other time units. The first signal is based on a ZC sequence, with a length greater than 127 (the primary synchronization signal (PSS) in the NR's SSB is 127 long), and carries identification information such as supercell ID, area ID, or partial information of an ID.

[0198] In some embodiments, the second signal is a periodic signal carrying information such as sub-cell identification information, cell identification information, super-cell-based identification information, and identification information based on the first signal. The sequence of the second signal is an m-sequence or a PN-sequence.

[0199] In some embodiments, the first signal carries first identification information, and the second signal carries second identification information. The first identification ranges from 1 to X1, and the second identification ranges from 1 to X2, where X1 is less than or equal to 32, and X2 is greater than or equal to 173.

[0200] In some embodiments, the SCS of the first signal and the second signal are the same.

[0201] In some embodiments, the first signal and the second signal have the same power or energy per resource element (EPRE).

[0202] For example, Figure 3 is used as an example to describe the solution involved in this disclosure in detail below.

[0203] First, receive the first signal, then the second signal and the first channel, then receive / system information (other SI, OSI) / paging channel (denoted as paging) / random access channel (RACH). Alternatively, you can first receive the first signal, then the second signal and the first channel, then the third signal, then receive / OSI / paging / RACH.

[0204] Here, the time-domain position of the second signal is adjacent to the time-domain position of the first channel. For example, the next or x slots / symbols / subframes / microseconds (µs) / ms after the end of the second signal are the resources occupied by the first channel; or, the next or y subcarriers, RE, PRB of the second signal are the resources occupied by the first channel.

[0205] In some embodiments, the second signal includes a first channel (the first channel includes the second signal). The second signal includes the first channel, meaning that the range of the time-domain and / or frequency-domain resources of the first channel is within the range of the second signal, or the first channel is bound to / associated with the second signal.

[0206] In some embodiments, the first signal may be adjacent to the second signal or the first channel in certain scenarios. In other scenarios, it may not be adjacent to the second signal or the first channel. That is, there is an offset between the first signal and the second signal or the first channel.

[0207] The signal's function or workflow includes: The first signal is used for coarse synchronization and measurement, serving as a reference signal for the first cell. When the UE moves over a large area and does not need to transmit data, maintaining the detection of the first signal is sufficient. If the UE requires fine synchronization or is preparing to access a specific cell, it needs to further receive the second signal and the first channel. The second signal is a synchronization signal and can also be used for measurement. The first channel is a broadcast channel carrying necessary system information to determine the cell to access.

[0208] Here, the first signal and the second signal are decoupled, which makes it convenient for the network to transmit the second signal or the first channel as needed. In some scenarios, the second cell does not need to transmit the second signal or the first channel, thus avoiding network overhead or power consumption.

[0209] In the second cell, third signals, paging messages, (other) system information, or RACH procedures are transmitted. The third signals are used for synchronization or measurement within the second cell.

[0210] The advantage of this signal function or workflow is that the access location of the second cell indicated by the first channel can be offloaded and diverted according to different situations, allowing different UEs to access under different second cells.

[0211] In some embodiments, the second signal is associated with the first signal, and the first channel is associated with the second signal.

[0212] In some embodiments, the second signal and / or the first channel are directed toward a common cell or a second cell, and the first signal is directed toward a first cell or a super cell.

[0213] The first signal carries the first identification information, the second signal carries the second identification information, and the third signal, based on the second identification information, provides configuration information such as system messages, access, and paging.

[0214] The second signal and the first channel are continuous in the time domain or frequency domain.

[0215] The second signal and the first signal may be on different frequencies; or the second signal and the first channel may be on the same frequency.

[0216] The second signal includes the first channel portion, and the two can be combined into a single channel or signal.

[0217] The first channel includes system information and demodulation reference signal (DMRS). The system information is carried by the physical broadcast channel (PBCH) or system information block (SIB).

[0218] The information carried by the first channel includes: second identification information, system message configuration information, paging message configuration information, and RACH configuration information.

[0219] The information carried by the first channel includes the configuration information of the third signal, such as period, time-frequency resources, codeword, sequence, cyclic shift, cyclic prefix (cp), SCS, etc.

[0220] The first signal and the second signal have the same bandwidth, or both are less than or equal to X RBs, where X is 25 or 11.

[0221] The first signal period includes 4, 8, 16, 32, 64, 40, 80, 160, 320, and 640, with units of ms, us, slot, subframe, symbol, and frame.

[0222] The first signal is primarily used for synchronization measurements and associating with information from the first cell. It can also be used to indicate the location of the second signal. One indication method involves defining it based on one granularity and two parameters. The granularity, such as 100kHz, 200kHz, or 10MHz, represents the frequency granularity. One parameter is the frequency position within the granularity, and the other parameter determines the number of granularities. For example, F = A*g + B, where g is the granularity, A is the quantity of g, B is the frequency position within the granularity, and F represents the location of the second signal.

[0223] The first signal can also indicate the frequency resources of the second signal, such as bandwidth / number of RBs; code domain resources, such as sequence; and time domain resources, such as number of symbols / time slots and position.

[0224] The second signal carries the second cell ID. The second cell ID is associated with the first cell identification information.

[0225] The frequencies of the first and second signals may be different or the same.

[0226] The beam information of the second signal may differ from that of the first signal. Beam information includes the number of beams, beam index, beam position, or beam pattern.

[0227] The first channel and the second signal have the same beam information.

[0228] The first channel / second signal has a QCL relationship with the first signal.

[0229] Referring to Figure 3, the following section details the relationship between the frequency domain positions of the signals in the figure.

[0230] The first and second signals have the same frequency; the third signal / OSI / paging / RACH may have the same or different frequency.

[0231] The first and second signals have different frequency positions, and their frequency positions are related to each other, including:

[0232] a) The first signal is at the first frequency point, and the second signal is at one of the n associated frequency points, including the first frequency point.

[0233] b) Determine the frequency position of the second signal based on the frequency of the first signal and the formula or constraint relationship. For example, when it is less than x GHz, the frequency of the first signal is f1, and the frequency position of the second signal is f2 = f1 + n*k, where n is a natural number, taking values ​​such as 0, 1, 2, 3, 4, etc., and k takes values ​​such as 100KHz, 50KHz, etc.

[0234] c) Determine the frequency position of the second signal based on the frequency of the first signal, the SCS, and the formula or constraint relationship. For example, when it is less than x GHz, the frequency of the first signal is f1, the corresponding SCS is u, and the frequency position of the second signal is f2 = f1 + n*k*2^u, where n is a natural number, taking values ​​such as 0, 1, 2, 3, 4, etc., and k takes values ​​such as 100KHz, 50KHz, etc.

[0235] In some embodiments, the position of the third signal or paging, OSI, RACH is determined based on the first channel, including:

[0236] a) There is an offset from the time domain of the first channel, which is predetermined by offset or determined according to the base station instruction.

[0237] b) The first channel indicator is based on the frequency band of the first channel, and the frequency band offset of the third signal / OSI / paging / RACH is located in the same frequency band.

[0238] For example, assume the frequency band offset is 0, which means the frequency band corresponding to the current frequency point. Assume the frequency band offset is 1, which means the frequency band number corresponding to the current frequency point is increased by 1. Assume the frequency band offset is -1, which means the frequency band number corresponding to the current frequency point is decreased by 1.

[0239] Referring again to Figure 3, the beam correlation of the signal is described below.

[0240] Here, the first signal is mainly used for synchronization or measurement of the first cell, and carries the first identification information. The second signal is used for synchronization or measurement of the second cell or the common cell, and carries the identification information of the common cell, or carries an indication of the first channel, such as the transport block size (TBS) or bandwidth.

[0241] When the second signal and the first channel are adjacent, their beam information is the same. Each beam has a one-to-one correspondence.

[0242] When the second signal includes the first channel, the relationship between the beamlines of the first signal and the second signal is as follows:

[0243] The first signal has fewer beams and is used to provide wide-area coverage. The second signal has more beams, which facilitates beam alignment and subsequent scheduling or access procedures.

[0244] The beam index of the first signal is 0 to A, and the beam index of the second signal is 0 to B, where B > A. When the beam indices of the first and second signals are the same, their beam directions are the same.

[0245] The time-domain symbol / slot index (slot index) corresponding to the first signal is a subset of the time-domain symbol / slot index corresponding to the second signal. For example, as shown in Figure 4, the slot index of the first signal is index 0 to 3, which is a subset of the slot index of the second signal.

[0246] For example, Figure 5 is used as an example to describe the solution involved in this disclosure in detail below.

[0247] First, receive the first signal, then the second signal, then the first channel, then the third signal, and finally / OSI / paging / RACH. Here, the time domain position of the second signal is continuous with the time domain position of the first channel, or the second signal includes the first channel.

[0248] Here, the time-domain location of the second signal is not adjacent to the time-domain location of the first channel; that is, there is an offset between the time-domain locations of the first and second signals. Alternatively, the first signal, the second signal, and the first channel are defined on non-overlapping time-domain resources.

[0249] The first channel can transmit or receive signals based on the UE trigger signal. The second channel can transmit or receive signals based on the UE trigger signal in some scenarios, while in other scenarios it needs to be transmitted or received by default.

[0250] In Figure 5, the function or workflow of the signal includes:

[0251] Method 1: The first and second signals are used for synchronization, measurement, or detection of the first cell, and can be used to indicate or determine the location of the first channel. Detecting the first channel determines the access to the second cell, in which a third signal or at least one of OSI, paging, and RACH is transmitted.

[0252] The advantage of Method 1 is that after detecting the first and second signals, the time-frequency location of the first channel is determined. If the UE does not access the cell, it can receive only the first or second signal without processing the first channel, thus saving power. Determining the access location based on the first channel helps the base station offload and distribute traffic to the UE, avoiding congestion in a certain frequency domain.

[0253] Method 2: The first signal is used for synchronization, measurement or detection of the first cell. After the first signal is obtained, the second signal and / or the first channel are detected. Then, the accessed second cell is determined according to the first channel. The third signal or at least one of OSI, paging, and RACH is transmitted in the second cell.

[0254] Compared to method 1, the difference lies in whether the cell discovery process uses the first and second signals, or only the first signal. Based on the first signal, the UE can only perform coarse synchronization to meet basic measurement requirements. The presence of the first signal allows for subsequent access. The advantage is that the UE consumes less energy to maintain this state.

[0255] The correlation between the signals in Figure 5 includes at least one of the following:

[0256] The first signal carries first identification information, which can be used to determine the time-frequency position of the second signal. The second signal carries the position information of the first channel, which is used to determine the third signal or OSI / paging / RACH.

[0257] a) The first signal carries first identification information, and the time-frequency position of the second signal is determined based on the first signal. For example, the time-domain positions of the first and second signals may be offset, or they may share the same center frequency. Alternatively, the frequency points of the first and second signals may have an offset or be correlated. The identification information ranges from 0 to x, where x does not exceed 100 or 50. The first signal is a ZC sequence; the number of sequences cannot be too large, therefore the range indicated by the identification information cannot be too broad.

[0258] b) The location of the first channel is determined based on the second signal, including at least one of the following:

[0259] A second signal, such as different sequences, indicates different locations;

[0260] The second signal and the first channel are offset in the time domain;

[0261] The second signal and the first channel have offset or the same frequency points in the frequency domain, such as the center frequency, boundary frequency, bandwidth, etc.

[0262] c) The first signal period is relatively large (e.g., 320, 160, 80, 40, 4, 8, 16, 32), the second signal period is smaller than the first signal period (5, 10, 15, 20), and the first channel period is smaller than the first signal period (e.g., 5, 10, 15, 20).

[0263] In some embodiments, the first signal and the second signal carry first identification information, which can be used to determine the location information of the first channel. The first channel is used to determine the third signal or OSI / paging / RACH, including at least one of the following:

[0264] The first and second signals carry first identification information;

[0265] The first channel position is determined based on the second signal, including determining the first channel position based on the time-frequency position and offset of the second signal, and determining the first channel position based on the indication of the second signal.

[0266] The first and second signals have the same bandwidth and frequency.

[0267] The first signal and the second signal have the same period (e.g., 320, 160, 80, 40, 4, 8, 16, 32), and the first channel period is smaller than the first signal period (e.g., 5, 10, 15, 20).

[0268] The following section continues with a description of the relationship between the frequency domain positions of the signals, as shown in Figure 5.

[0269] In some embodiments, the first signal and the second signal have the same frequency; the third signal / OSI / paging / RACH may have the same frequency or a different frequency.

[0270] In some embodiments, the frequency points of the first signal and the second signal are different and related to each other, including at least one of the following:

[0271] a) The first signal is at the first frequency point, and the second signal is at one of the n associated frequency points, including the first frequency point.

[0272] b) Determine the frequency position of the second signal based on the frequency of the first signal and the formula or constraint relationship.

[0273] For example, when the frequency is less than x GHz, the first signal frequency is f1, and the second signal frequency is f2 = f1 + n*k, where n can be 0, 1, 2, 3, 4, etc., and k can be 100KHz, 50KHz, etc.

[0274] c) Determine the frequency position of the second signal based on the frequency point of the first signal, SCS, and the formula or constraint relationship.

[0275] For example, when the frequency is less than x GHz, the first signal frequency is f1, the corresponding frequency u of SCS is u, and the second signal frequency is f2 = f1 + n*k*2^u, where n can be 0, 1, 2, 3, 4, etc., and k can be 100KHz, 50KHz, etc.

[0276] In some embodiments, the frequency position of the first channel is determined based on the position of the second signal, including at least one of the following:

[0277] There is an offset in the time domain;

[0278] Same frequency;

[0279] The frequencies are different. For example, determining the frequency position of the first channel based on the second signal includes: determining the frequency position of a third signal or OSI / paging / RACH based on the sequence of the second signal.

[0280] In some embodiments, the location of the third signal or paging, OSI, RACH is determined based on the first channel, including: having an offset from the first channel in the time domain, being predetermined at the offset or determining the offset according to a base station indication; and / or, the first channel indication is based on the band of the first channel, the band offset where the third signal / OSI / paging / RACH is located.

[0281] For example, suppose offset = 0, which is the band corresponding to the current frequency point; suppose offset = 1, which is the band number corresponding to the current frequency point + 1; suppose offset = -1, which is the band number corresponding to the current frequency point - 1.

[0282] Referring to Figure 5, the beam correlation of the signal is described in detail below.

[0283] case 1:

[0284] The third signal is transmitted in the first cell. The third signal has the same frequency as the first signal and the second signal, or has the same frequency band, or has the same reference frequency, or has an offset between the frequency points.

[0285] The third signal is transmitted in the common cell of the second cell. The third signal has the same frequency as the first signal and the second signal, or has the same frequency band, or has the same reference frequency, or has an offset between the frequency points.

[0286] case 2:

[0287] The first and second signals have the same frequency.

[0288] The third signal may have the same or different frequency points as the first or second signal.

[0289] For example, referring to Figure 6, the beams have the following relationship: the beams of the first signal and the second signal are the same, the beam index of the third signal includes the beam index of the first signal, or the beam indices of the two signals overlap.

[0290] For example, Figure 7 is used as an example to describe the solution involved in this disclosure in detail with reference to specific embodiments or examples.

[0291] First, receive the first signal, then the first channel, then the third signal, and then OSI / paging / RACH.

[0292] Here, the first signal is adjacent to the first channel location and includes at least one of the following:

[0293] a) The first signal and the first channel are continuous or adjacent in the time domain or frequency domain.

[0294] b) The second signal is offset from or has a gap with the first channel or the first signal in the time domain or frequency domain.

[0295] c) The position of the second signal is determined based on the first channel.

[0296] Here, the functions or workflows associated with the signals in Figure 7 include:

[0297] The first signal and the first channel are used for synchronization, measurement, or detection of the first cell. They can be used to indicate or determine the relevant configuration of the accessed second cell, such as the third signal, OSI, paging, RACH-related configuration, which can be used for access to the second cell.

[0298] Here, the correlations between the signals in Figure 7 include: the first channel and the first signal are correlated, having the same period and overlapping time or frequency domain positions. The second signal is offset from the first channel, with N possible offset values, one of which is indicated by the first channel to determine the time domain position of the second signal.

[0299] In some embodiments, the second signal determines its frequency domain location based on the first channel, including at least one of the following:

[0300] a) The second signal and the first channel are offset in the frequency domain, and there are N offset values, one of which is indicated by the first channel.

[0301] b) The first channel indicates the band number and band index of the second signal / OSI / paging / RACH.

[0302] c) The first channel indicates the frequency domain location of the second signal. For example, based on a granularity X, the first channel indicates a C1 and a C2, and the frequency domain location of the second signal is C1*X+C2, where C2 is the frequency domain location of the second signal. <X。

[0303] The following section continues with a description of the relationship between the frequency domain positions of the signals shown in Figure 7.

[0304] In some embodiments, the first signal and the second signal have the same frequency; their frequency domains overlap, are continuous, or are adjacent.

[0305] In some embodiments, the location of at least one second signal or OSI / paging / RACH is determined based on the first channel.

[0306] In some embodiments, the second signal and OSI / paging / RACH are in the same band, bandwidth location, or BWP.

[0307] In some embodiments, indicating a third signal, a second signal, or an OSI / paging / RACH based on a first channel includes: indicating at least one third signal, a second signal, or an OSI / paging / RACH via the first channel. That is, it is possible to simultaneously indicate the presence of multiple third signals, multiple second signals, or multiple OSI / paging / RACH at different frequency points.

[0308] For example, this can be indicated using a bitmap: for instance, an N-bit bitmap, where each bit corresponds to a bandwidth of the second signal or OSI / paging / RACH. When present, the center frequency of that bandwidth is indicated by additional signaling.

[0309] For example, based on the first channel, the presence of an initial BWP, a signal or channel under a specific bandwidth, and the presence of second system information such as RACH and paging can be indicated by a bitmap, for example, an N-bit bitmap, where each bit corresponds to the presence of the initial BWP, the presence of the signal or channel under a specific bandwidth, and the presence of the second system information such as RACH and paging.

[0310] For example, the first channel is indicated by an index: for example, an index for an initial BWP, an index for a specific bandwidth, a specific frequency point, carrier, frequency band, beam, or a specific signal or channel. If at least one index is indicated, then there is a channel or signal transmission under the corresponding initial BWP, or frequency point, or specific bandwidth, carrier, frequency band, or beam.

[0311] For example, a signaling signal indicates the frequency and bandwidth. For example, the bandwidth may be 5M, 10M, 20M, 50M, 100M, 200M, or 400M.

[0312] For different frequency ranges, the bandwidth may have different values. For example, for frequency range 1, the bandwidth is at least one of 5, 10, 20, 50, and 100 MHz, and for frequency range 2, the bandwidth is at least one of 20, 50, 100, 200, and 400 MHz.

[0313] In some embodiments, when the frequencies of the second signal and the first signal may be different but related in the description of FIG3 or FIG7 above, another implementation is that the first signal sync raster / frequency and the second signal sync raster / frequency are associated.

[0314] In some embodiments, the sync raster of the first signal is at a first candidate set frequency point, and the frequency point position of the sync raster of the second signal is determined based on the frequency point of the first signal.

[0315] In some embodiments, the sync raster of the first signal is at a first candidate set frequency point, and the sync raster of the second signal is at a second candidate set frequency point determined based on the frequency point of the first signal. For example, the frequency point of the second candidate set is determined based on the frequency point of the first signal, such as being near the frequency point of the first signal.

[0316] In some embodiments, the first signal is at a first frequency point f1, and the frequency point of the second signal is obtained based on f1. For example, the frequency point of the second signal is f2, which satisfies f2 = f1 + α, where α has different sets of values ​​depending on different SCS, or different sets of values ​​depending on different f1.

[0317] In some embodiments, the UE receives a first signal to complete the process of searching for a first cell, and the UE receives a second signal to complete the process of searching for a second cell, where the second cell is associated with the first cell, or at least one second cell is associated with the first cell.

[0318] A specific implementation method is as follows: the sync raster of the first signal is in band n1~n xThe frequency position of the second signal is related to the band position of the first signal, that is, its band n i The corresponding second signal frequency point position is one of {n i-2 …n i-1 …n i …n i+1 …n i+2 …}

[0319] Here, the sync raster of the first signal is in band n i The frequency position of the second signal is obtained based on the frequency position of the first signal and the step size. For example, f2 = f1 + X * α, where α is the step size and X is an integer. Different bands and different SCS can define different step sizes or values ​​for X.

[0320] Here, the frequency point location mentioned above includes at least one of the following: the center frequency point of the signal; the upper boundary frequency point or subcarrier of the signal; the lower boundary frequency point or subcarrier of the signal; the frequency point of the sync raster / channel raster where the signal is located; the carrier, frequency band, part of the bandwidth, or a segment of frequency domain resources where the signal is located.

[0321] Referring to Figure 7, the first signal can now be used primarily for synchronization measurements and to associate information with the first cell.

[0322] In some embodiments, the first signal can also be used to indicate the position of the second signal. One indication method includes defining a granularity based on two parameters: the granularity is a frequency granularity, such as 100 kHz, 200 kHz, or 10 MHz; one parameter is the frequency position within the granularity; and the other parameter determines the number of granularities. For example, F = A * g + B, where g is the granularity, A is the quantity of g, and B is the frequency position within the granularity.

[0323] In some embodiments, the first signal may also indicate the frequency resources of the second signal, such as bandwidth / number of RBs; code domain resources, such as sequence; time domain resources, such as number of symbols / time slots, and location.

[0324] In some embodiments, the second signal carries a second cell ID. The second cell ID is associated with the first cell ID information.

[0325] In some embodiments, the frequencies of the first signal and the second signal may be different or the same.

[0326] In some embodiments, the second signal may have a different frequency position relative to the first signal, and therefore the beam information may differ. The beam information includes the number of beams, beam index, beam position, or pattern.

[0327] In some embodiments, the second signal has a QCL relationship with the first signal and has different SCS or the same SCS.

[0328] In some embodiments, the relationship of signal beamformation includes at least one of the following:

[0329] The first signal has fewer beams and is used to provide wide-area coverage. The second signal has more beams, which facilitates beam alignment and subsequent scheduling or access procedures.

[0330] The beam index of the first signal is 0 to A, and the beam index of the second signal is 0 to B, where B > A. When the beam indices of the first and second signals are the same, their beam directions are the same.

[0331] The time-domain symbol / time-slot index corresponding to the first signal is a subset of the time-domain symbol / time-slot index corresponding to the second signal.

[0332] In some embodiments, the first channel or the third signal is received after a period of time following the transmission of the target signal or channel by the first node. At this time, the first node can send the target signal, such as a wake-up signal, to the second node to wake up the first channel or the third signal. After a period of time following the transmission of the target signal by the first node, listening to the first channel or the third signal begins.

[0333] In some embodiments, as shown in FIG8, the first signal, the second signal, and the reception of the first channel come from different second nodes.

[0334] In some embodiments, as shown in FIG9, the first signal and the second signal are received from different second nodes, and the second signal and the first channel are received from the same second node.

[0335] In some embodiments, as shown in FIG10, the first signal and the second signal are received from the same second node, and the second signal and the first channel are received from different second nodes.

[0336] In some embodiments, the reception of at least one of the first signal, the second signal, and the first channel comes from the same second node, but from a different second node than the reception of the third signal.

[0337] In some embodiments, the first channel or the third signal is determined by the artificial intelligence processing module to determine whether it will be received. The artificial intelligence processing module predicts whether the first channel or the third signal will be transmitted. If the prediction is negative, reception is not performed; if the prediction is positive, reception is performed.

[0338] This disclosure provides a signal transmission method applied to a second node. As shown in Figure 11, the method includes the following steps:

[0339] S201. Send at least one of the following: a first signal, a second signal, a third signal, and a first channel.

[0340] Here, the first signal, the second signal, and the third signal are all reference signals; the first channel carries the first system information.

[0341] In some embodiments, at least one of the following is satisfied:

[0342] The first signal and the second signal are correlated;

[0343] There is a correlation between the first channel and the second signal;

[0344] There is a correlation between the first channel and the first signal;

[0345] The third signal is correlated with the first channel.

[0346] In some embodiments, the association includes at least one of the following:

[0347] The correlation between the time-domain locations of signals;

[0348] The correlation between the frequency domain positions of the signal;

[0349] The correlation between signal periods;

[0350] The correlation of signal beams;

[0351] The correlation between the cells corresponding to the signals;

[0352] Quasi-co-address relationships between signals.

[0353] In some embodiments, the first system information indicated by the first channel includes at least one of the following:

[0354] System frame number information;

[0355] Frequency configuration information;

[0356] Bandwidth configuration information;

[0357] Second identification information;

[0358] Subcarrier spacing;

[0359] Configuration information for the third signal;

[0360] Configuration information for the random access channel;

[0361] Paging channel configuration information;

[0362] The physical control channel configuration information corresponding to the second system message.

[0363] For a more detailed description of S201 above, as well as a more detailed description of each technical feature therein, and a description of the beneficial effects, please refer to the description in the above embodiments or examples, which will not be repeated here.

[0364] The foregoing primarily describes the solutions of the embodiments of this disclosure from a methodological perspective. The following also illustrates a signal transmission apparatus for executing the signal transmission methods in any of the above embodiments and their possible implementations. It is understood that, in order to implement the signal transmission method, the signal transmission apparatus includes hardware structures and / or software modules corresponding to the execution of various functions; those skilled in the art should readily recognize that, in conjunction with the algorithm steps of the examples described in the embodiments of this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the target application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each target application, but such implementation should not be considered beyond the scope of this disclosure.

[0365] This disclosure embodiment can divide the signal transmission device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0366] Figure 12 is a block diagram of a signal transmission device according to some embodiments, applied to a first node. The signal transmission device 30 includes a communication module 31 and a processing module 32.

[0367] The communication module 31 is used to receive at least one of a first signal, a second signal, a third signal, and a first channel; here, the first signal, the second signal, and the third signal are all reference signals; the first channel carries first system information.

[0368] Processing module 32 is used to determine the access cell based on the received signal.

[0369] In some embodiments, the communication module 31 is specifically used for one of the following:

[0370] First, receive at least one of the first signal, the second signal, and the first channel, and then receive the third signal;

[0371] First receive the first signal, then receive the second signal and / or the first channel, and then receive the third signal;

[0372] First receive the first signal and / or the first channel, then receive the second signal.

[0373] In some embodiments, at least one of the following is included:

[0374] The first signal includes first identification information, and the second signal includes second identification information;

[0375] The first signal includes first identification information, the second signal includes part of the second identification information, and the third signal includes the remaining part of the second identification information.

[0376] The first signal includes a portion of the first identification information, and the second signal includes the remaining portion of the first identification information.

[0377] The first signal is used for at least one of synchronization, measurement, cell search, and access in the first cell; the second signal is used for at least one of synchronization, measurement, cell search, and access in the second cell.

[0378] The first signal and the second signal are used for at least one of the following in the first cell: synchronization, measurement, cell search, and access; the third signal is used for at least one of the following in the second cell: synchronization, measurement, cell search, and access.

[0379] The first signal is based on the ZC sequence, and the second signal is based on the m sequence or the gold sequence.

[0380] In some embodiments, at least one of the following is satisfied:

[0381] The first signal and the second signal are correlated;

[0382] There is a correlation between the first channel and the second signal;

[0383] There is a correlation between the first channel and the first signal;

[0384] The third signal is correlated with the first channel.

[0385] In some embodiments, the association includes at least one of the following:

[0386] The correlation between the time-domain locations of signals;

[0387] The correlation between the frequency domain positions of the signal;

[0388] The correlation between signal periods;

[0389] The correlation of signal beams;

[0390] The correlation between the cells corresponding to the signals;

[0391] Quasi-co-address relationships between signals.

[0392] For a more detailed description of the communication module 31 and the processing module 32, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0393] Figure 13 is a block diagram of a signal transmission device according to some embodiments, applied to a second node. The signal transmission device 40 includes a processing module 41 and a communication module 42.

[0394] Here, the processing module 41 is used to determine at least one of the first signal, the second signal, the third signal, and the first channel.

[0395] The communication module 42 is used to transmit at least one of a first signal, a second signal, a third signal, and a first channel; here, the first signal, the second signal, and the third signal are all reference signals; the first channel carries first system information.

[0396] In some embodiments, the communication module 42 is specifically used for one of the following:

[0397] First, send at least one of the first signal, the second signal, and the first channel, and then receive the third signal;

[0398] First send the first signal, then receive the second signal and / or the first channel, and then receive the third signal;

[0399] First, send the first signal and / or the first channel, then receive the second signal.

[0400] For a more detailed description of the processing module 41 and the communication module 42, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0401] It should be noted that the modules in Figures 12 and 13 can also be called units; for example, a communication module can be called a communication unit. Furthermore, in the embodiments shown in Figures 12 and 13, the names of the modules may not be those shown in the figures; for example, a communication module can also be called a transmitting module or a receiving module.

[0402] If the units or modules in Figures 12 and 13 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, in essence, or the parts that contribute to related technologies, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0403] In the case of implementing the functions of the integrated modules described above in hardware, embodiments of this disclosure also provide a possible structure for a communication device used to execute the signal transmission method provided in embodiments of this disclosure. As shown in FIG14, the communication device 500 includes: a communication interface 503, a processor 502, and a bus 504. In some embodiments, the communication device may further include a memory 501.

[0404] Processor 502 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 502 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 502 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a digital signal processor (DSP), and a microprocessor, etc.

[0405] Communication interface 503 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0406] The memory 501 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0407] In some embodiments, the memory 501 may exist independently of the processor 502. The memory 501 may be connected to the processor 502 via a bus 504 and is used to store instructions or program code. When the processor 502 calls and executes the instructions or program code stored in the memory 501, it can implement the signal transmission method provided in the embodiments of this disclosure.

[0408] In other embodiments, memory 501 may also be integrated with processor 502.

[0409] Bus 504 can be an extended industry standard architecture (EISA) bus, etc. Bus 504 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 14, but this does not mean that there is only one bus or one type of bus.

[0410] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform a signal transmission method as described in any of the above embodiments.

[0411] For example, the computer may be the signal transmission device described above, and this disclosure does not limit the specific form of the computer.

[0412] In some examples, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices for storing information and / or other machine-readable storage media. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0413] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the signal transmission method described in any of the above embodiments.

[0414] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A signal transmission method, wherein, Applied to the first node, the method includes: Receive at least one of the following: a first signal, a second signal, a third signal, and a first channel; Wherein, the first signal, the second signal, and the third signal are all reference signals; the first channel carries first system information.

2. The method according to claim 1, wherein, The receipt of at least one of the first signal, the second signal, the third signal, and the first channel includes one of the following: First receive the first signal, the second signal, and at least one of the first channel, then receive the third signal; or, First receive the first signal, then receive the second signal and / or the first channel, then receive the third signal; or, First receive the first signal and / or the first channel, then receive the second signal.

3. The method according to claim 1, wherein, Includes at least one of the following: The first signal includes first identification information, and the second signal includes second identification information; The first signal includes first identification information, the second signal includes part of the second identification information, and the third signal includes the remaining part of the second identification information; The first signal includes a portion of the first identification information, and the second signal includes the remaining portion of the first identification information; The first signal is used for at least one of synchronization, measurement, cell search, and access in the first cell; the second signal is used for at least one of synchronization, measurement, cell search, and access in the second cell. The first signal and the second signal are used for at least one of synchronization, measurement, cell search, and access in the first cell, and the third signal is used for at least one of synchronization, measurement, cell search, and access in the second cell; The first signal is based on the ZC sequence, and the second signal is based on the m sequence or the gold sequence.

4. The method according to claim 1, wherein, Meet at least one of the following: The first signal and the second signal are correlated; The first channel and the second signal are correlated; The first channel is associated with the first signal; The third signal is associated with the first channel.

5. The method according to claim 4, wherein, The association includes at least one of the following: The correlation between the time-domain locations of signals; The correlation between the frequency domain positions of the signal; The correlation between signal periods; The correlation of signal beams; The correlation between the cells corresponding to the signals; Quasi-co-address relationships between signals.

6. The method according to claim 5, wherein, The correlation between the time-domain locations of the signals includes at least one of the following: The time domain position of the first signal is offset from the time domain position of the second signal; The time-domain position of the second signal is determined based on the time-domain position and / or offset of the first signal; The time-domain position of the first channel is continuous with or offset from the time-domain position of the second signal; The time-domain position of the first channel is determined based on the time-domain position and / or offset of the second signal; The time-domain position of the first channel and the time-domain position of the first signal are either continuous or offset. The time-domain position of the first channel is determined based on the time-domain position and / or offset of the first signal; The time-domain position of the third signal is determined based on the first channel.

7. The method according to claim 5, wherein, The correlation between the frequency domain positions of the signals includes at least one of the following: The first signal, the second signal, and the first channel have the same frequency. The second signal has the same frequency as the first channel; The frequency of the first channel or the second signal is different from the frequency of the first signal or there is an offset; At least one frequency point of the first channel or the second signal is associated with the first signal; At least one frequency point of the first channel is associated with the first signal or the second signal; The frequency of the third signal is determined based on the first channel; The frequency point of the third signal is determined based on the first channel through a bitmap or an index indication. The bandwidth occupied by the first signal, the second signal, and the first channel is all less than or equal to a first preset value; The first signal and the second signal have the same bandwidth; The second signal has the same bandwidth as the first channel; The first signal, the second signal, and the first channel have the same bandwidth; The bandwidth of the second signal is determined based on the first channel; The bandwidth of the third signal is determined based on the first channel.

8. The method according to claim 7, wherein, The frequency points of the signal include the center frequency point of the signal, the upper boundary frequency point of the signal, the lower boundary frequency point of the signal, the frequency point of the channel grid where the signal is located, the center subcarrier where the signal is located, the upper and lower boundary subcarriers where the signal is located, the carrier where the signal is located, and the frequency band where the signal is located.

9. The method according to claim 5, wherein, The correlation between the periods of the signals includes at least one of the following: The period of the first signal is greater than or equal to the period of the second signal; The period of the first signal is greater than or equal to the period of the first channel; The period of the first channel is less than or equal to the period of the second signal; The period of the second signal or the third signal is determined according to the first channel.

10. The method according to claim 5, wherein, The beam association of the signal includes at least one of the following: The number of beams of the first signal is less than or equal to the number of beams of the second signal; The beam index of the first signal is a subset of the beam index of the second signal; The beam index of the first signal overlaps with the beam index of the second signal; The second signal and the first signal have the same number of beams or beam index; The second signal or the first signal is the same as or related to the beam information of the first channel; The beam information of the second signal or the beam information of the third signal is determined based on the first channel.

11. The method according to claim 10, wherein, The beam information includes at least one of the following: beam index, number of beams, beam position, and beam pattern.

12. The method according to claim 1, wherein, The first system information carried by the first channel includes at least one of the following: System frame number information; Frequency configuration information; Bandwidth configuration information; Second identification information; Subcarrier spacing; Configuration information of the third signal; Configuration information for the random access channel; Paging channel configuration information; The physical control channel configuration information corresponding to the second system message.

13. The method according to claim 12, wherein, The frequency point configuration information includes at least one of the following: at least one frequency point of initial partial bandwidth, at least one frequency point corresponding to the second cell, at least one frequency point of the third signal, at least one frequency point of system information, at least one frequency point of paging message, and at least one frequency point of random access channel.

14. The method according to claim 12, wherein, The bandwidth configuration information includes at least one of the following: the bandwidth of at least one initial partial bandwidth, the bandwidth corresponding to at least one second cell, the bandwidth of at least one of the third signals, the bandwidth of at least one other system information, the bandwidth of at least one paging message, the bandwidth of at least one random access channel, and the bandwidth of at least one specific frequency domain.

15. The method according to claim 12, wherein, The configuration information of the random access channel includes at least one of the following: Preamble index configuration; The number of frequency domain resources for random access channels; The root sequence index of the random access sequence; The maximum number of transmissions in the random access preamble sequence; The number of random access opportunities.

16. The method according to claim 15, wherein, The number of random access opportunities is determined based on at least one of the following: the first signal, the second signal, the third signal, and the first channel.

17. The method according to claim 12, wherein, The configuration information of the third signal includes at least one of the following: the period of the third signal, the time domain resources of the third signal, and the frequency domain resources of the third signal.

18. The method according to claim 12, wherein, The paging channel configuration information includes the configuration information of the physical shared channel and / or the configuration information of the physical control channel.

19. The method according to claim 18, wherein, The configuration information of the physical control channel includes at least one of the following: Frequency domain resources; reference frequency; offset from the reference frequency; frequency band number; control resource set index; aggregation level; time domain resources; search space index; time domain offset; period; scrambling method.

20. The method according to claim 18, wherein, The configuration information of the physical shared channel includes at least one of the following: Transport block size; Modulation and coding strategies; Number of resource blocks; Number of time slots; Number of symbols.

21. The method according to claim 12, wherein, The configuration information of the third signal, the configuration information of the random access channel, the configuration information of the paging channel, or the configuration information of the physical control channel corresponding to the second system message are associated with at least one of the following: frequency point configuration information, bandwidth configuration information, second identification information, and subcarrier spacing.

22. The method according to claim 1, wherein, The first signal or the second signal includes a first sequence and a second sequence, wherein the first sequence and the second sequence satisfy at least one of the following: The first sequence and the second sequence are repeating sequences; The first sequence and the second sequence occupy consecutive symbols; The first sequence and the second sequence have the same length; The first sequence and the second sequence are ZC sequences or pseudo-random sequences; The frequency domain bandwidth of the first sequence and the second sequence is less than or equal to a preset value; The first sequence and the second sequence each carry partial identification information.

23. The method according to claim 1, wherein, The first channel or the third signal is received after a period of time has elapsed since the target signal or channel transmitted by the first node was transmitted.

24. The method according to claim 1, wherein, The first signal, the second signal, and the reception of the first channel originate from different second nodes; or, The first signal and the second signal are received from different second nodes, and the second signal and the first channel are received from the same second node; or, The first signal and the second signal are received from the same second node, and the second signal and the first channel are received from different second nodes; or, The reception of at least one of the first signal, the second signal, and the first channel originates from the same second node, but is different from the reception of the third signal originating from a different second node.

25. The method according to claim 1, wherein, The first channel or the third signal is received based on the artificial intelligence processing module.

26. A signal transmission method, wherein, Applied to the second node, the method includes: Send at least one of the following: a first signal, a second signal, a third signal, and a first channel; Wherein, the first signal, the second signal, and the third signal are all reference signals; the first channel carries first system information.

27. The method according to claim 26, wherein, Meet at least one of the following: The first signal and the second signal are correlated; The first channel and the second signal are correlated; The first channel is associated with the first signal; The third signal is associated with the first channel.

28. The method according to claim 27, wherein, The association includes at least one of the following: The correlation between the time-domain locations of signals; The correlation between the frequency domain positions of the signal; The correlation between signal periods; The correlation of signal beams; The correlation between the cells corresponding to the signals; Quasi-co-address relationships between signals.

29. The method according to claim 26, wherein, The first system information carried by the first channel includes at least one of the following: System frame number information; Frequency configuration information; Bandwidth configuration information; Second identification information; Subcarrier spacing; Configuration information of the third signal; Configuration information for the random access channel; Paging channel configuration information; The physical control channel configuration information corresponding to the second system message.

30. A communication device, wherein, include: Memory and processor; The memory and the processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method as described in any one of claims 1 to 29.

31. A computer-readable storage medium, wherein, The computer-readable storage medium includes a non-transitory computer-readable storage medium on which computer instructions are stored, which, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 29.

32. A computer program product, wherein, When the computer program product is executed, it implements the method as described in any one of claims 1 to 29.

Images