Communication method, network device, terminal, communication system, and storage medium

Abstract

Embodiments of the present disclosure relate to a communication method, a network device, a terminal, a communication system, and a storage medium. The communication method can be executed by a network device, and the method comprises: sending PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in time domain, at least one second symbol is mapped to each first symbol, and the modulation mode of the first symbol is different from that of the second symbol. In the present disclosure, at least one second symbol is mapped to each first symbol among at least one first symbol, and a network device sends PSS information on the second symbol, so that the PSS information can be simultaneously used for an MR and an LR of a terminal to perform time-frequency synchronization, thereby reducing resource overhead and enhancing synchronization performance.

Description

Communication methods, network equipment, terminals, communication systems and storage media Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, network device, terminal, communication system and storage medium. Background Technology

[0002] In wireless communication systems, terminals can synchronize with base stations by receiving synchronization signals and physical broadcast channel blocks (SSBs). To further save power, terminals can incorporate low-power receivers (LRs), which synchronize with base stations by receiving low-power synchronization signals (LP-SSs).

[0003] Summary of the Invention

[0004] The terminal's main receiver (MR) synchronizes based on the SSB, while the LR synchronizes based on the LP-SS. Independent transmission of both SSB and LP-SS incurs additional resource overhead. Therefore, how to simultaneously meet the synchronization requirements of the MR and LR while controlling resource overhead is a pressing issue.

[0005] This disclosure provides a communication method, network device, terminal, communication system, and storage medium.

[0006] According to a first aspect of the present disclosure, a communication method is proposed, which is executed by a network device. The method includes: transmitting PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, each first symbol is mapped to at least one second symbol, and the modulation scheme of the first symbol and the modulation scheme of the second symbol are different.

[0007] According to a second aspect of the present disclosure, a communication method is proposed, executed by a terminal, the method comprising: receiving PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, each first symbol is mapped to at least one second symbol, and the modulation scheme of the first symbol and the modulation scheme of the second symbol are different.

[0008] According to a third aspect of the present disclosure, a network device is provided, comprising: a transceiver module configured to transmit PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, each first symbol is mapped to at least one second symbol, and the modulation scheme of the first symbol and the modulation scheme of the second symbol are different.

[0009] According to a fourth aspect of the present disclosure, a terminal is provided, comprising: a transceiver module configured to receive PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, each first symbol is mapped to at least one second symbol, and the modulation scheme of the first symbol and the modulation scheme of the second symbol are different.

[0010] According to a fifth aspect of the present disclosure, a communication device is provided, comprising: one or more processors; wherein the communication device is configured to perform a communication method as described in any of the first to second aspects.

[0011] According to a sixth aspect of the present disclosure, a communication system is provided, including a network device and a terminal; the network device is configured to implement the communication method as described in the first aspect; and the terminal is configured to implement the communication method as described in the second aspect.

[0012] According to a seventh aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed on a communication device, cause the communication device to perform a communication method as described in any of the first to second aspects.

[0013] According to an eighth aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements the communication method of any one of the first to second aspects.

[0014] According to a ninth aspect of the present disclosure, a computer program is provided that includes code, which, when executed by a processor, implements the communication method of any one of the first to second aspects.

[0015] According to a tenth aspect of this disclosure, a chip or chip system is provided. The chip or chip system includes processing circuitry. The processing circuitry is configured to perform a communication method as described in any of the first to second aspects.

[0016] In this embodiment of the disclosure, at least one second symbol is mapped onto each of the at least one first symbol, and the PSS information is modulated using the modulation method of the second symbol. In this way, the PSS information can be used simultaneously for time and frequency synchronization of the terminal's MR and LR, reducing resource overhead and enhancing synchronization performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0018] Figure 1A is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0019] Figure 1B is a schematic diagram of the structure of an NR SSB according to an embodiment of the present disclosure.

[0020] Figure 2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure.

[0021] Figures 2B to 2D are schematic diagrams illustrating the structure of OOK symbols mapped to OFDM symbols according to embodiments of the present disclosure.

[0022] Figures 2E to 2H are schematic diagrams illustrating the structure of OFDM symbols carrying PSS and SSS information according to embodiments of the present disclosure.

[0023] Figures 2I to 2N are schematic diagrams of the structure of the SSB according to embodiments of the present disclosure.

[0024] Figure 3A is a schematic flowchart illustrating a network device performing a communication method according to an embodiment of the present disclosure.

[0025] Figure 3B is a schematic flowchart illustrating a terminal performing a communication method according to an embodiment of the present disclosure.

[0026] Figure 4 is a schematic diagram of a communication device according to an embodiment of the present disclosure.

[0027] Figure 5 is a schematic diagram of another structure of a communication device according to an embodiment of the present disclosure.

[0028] Figure 6 is a schematic diagram of a chip structure according to an embodiment of the present disclosure. Detailed Implementation

[0029] This disclosure provides a communication method, communication device, communication system, storage medium, and program product.

[0030] In a first aspect, embodiments of this disclosure propose a communication method executed by a network device, the method comprising: transmitting PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, each first symbol is mapped to at least one second symbol, and the modulation scheme of the first symbol and the modulation scheme of the second symbol are different.

[0031] In this embodiment of the disclosure, at least one second symbol is mapped onto each of the at least one first symbol, and the PSS information is modulated using the modulation method of the second symbol. In this way, the PSS information can be used simultaneously for time and frequency synchronization of the terminal's MR and LR, reducing resource overhead and enhancing synchronization performance.

[0032] In conjunction with some embodiments of the first aspect, in some embodiments, the second symbol is a first-class symbol or a second-class symbol.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, a pattern consisting of a first type of symbol and a second type of symbol mapped on at least one first symbol is used to indicate PSS information.

[0034] In this embodiment of the disclosure, the network device indicates PSS information by using a pattern formed by the arrangement and combination of first and second type symbols on at least one first symbol, thereby improving the flexibility of PSS information transmission.

[0035] In conjunction with some embodiments of the first aspect, in some embodiments, auxiliary synchronization signal SSS information is transmitted on a second time-frequency resource. The second time-frequency resource occupies all first-class symbols mapped on at least one first symbol in the time domain. The time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry the SSS information.

[0036] In this embodiment of the disclosure, PSS information and SSS information can be carried within the same first symbol. When the PSS information is indicated by a pattern of a combination of first and second type symbols within the first symbol, the SSS information can be carried by the time-frequency sequence of all first type symbols mapped on the first symbol. In other words, the network device can send PSS information and SSS information carried within the same first symbol in different ways, thereby improving transmission efficiency and reducing resource consumption.

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, at least a portion of the first class symbols mapped on at least one first symbol are used to carry PSS information.

[0038] In this embodiment of the disclosure, in addition to using patterns composed of first-class symbols and second-class symbols to indicate PSS information, the network device can also carry PSS information on the time-frequency sequence of at least a portion of the first-class symbols, which improves the flexibility of PSS information transmission and also increases the degree of freedom of the terminal in receiving the information. This makes it easier for the terminal to verify the PSS information obtained by the two methods, thereby increasing the reliability of PSS information transmission.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, a portion of the time-frequency sequence within a first-class symbol mapped on at least one first symbol is used to carry PSS information; the method further includes: transmitting auxiliary synchronization signal SSS information on a second time-frequency resource, wherein the second time-frequency resource occupies another portion of the first-class symbol mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry SSS information.

[0040] In conjunction with some embodiments of the first aspect, in some embodiments, the time-frequency sequence on all or part of the first class symbols mapped on at least one first symbol is used to carry PSS information; the method further includes: transmitting SSS information on a third time-frequency resource, the third time-frequency resource occupying at least one first symbol in the time domain, the first symbol occupied by the third time-frequency resource being different from the first symbol occupied by the first time-frequency resource.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, the first time-frequency resource occupies a plurality of consecutive first symbols in the time domain.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the number of at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the number of resource units occupied by at least one first symbol in the frequency domain is equal to or greater than the second value.

[0044] In conjunction with some embodiments of the first aspect, in some embodiments, the first time-frequency resource occupies a portion of a resource unit within at least one first symbol in the frequency domain.

[0045] In some embodiments, in conjunction with the first aspect, the method further includes: transmitting broadcast information on a fourth time-frequency resource, the fourth time-frequency resource occupying at least one first symbol in the time domain.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the first time-frequency resource in the frequency domain.

[0048] In conjunction with some embodiments of the first aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the third time-frequency resource, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the third time-frequency resource in the frequency domain.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, PSS information is used for time-frequency synchronization of a first receiver and a second receiver in a terminal, the first receiver is used to receive a wake-up signal, and the wake-up signal is used to wake up the second receiver.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the first receiver supports the modulation scheme of the second symbol, and the second receiver supports the modulation scheme of the first symbol.

[0052] Secondly, embodiments of this disclosure propose a communication method executed by a terminal, the method comprising: receiving PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, and each first symbol is mapped to at least one second symbol.

[0053] In conjunction with some embodiments of the second aspect, in some embodiments, the second symbol is a first-class symbol or a second-class symbol.

[0054] In conjunction with some embodiments of the second aspect, in some embodiments, a pattern consisting of a first type of symbol and a second type of symbol mapped on at least one first symbol is used to indicate PSS information.

[0055] In conjunction with some embodiments of the second aspect, in some embodiments, auxiliary synchronization signal SSS information is received on a second time-frequency resource. The second time-frequency resource occupies all first-class symbols mapped on at least one first symbol in the time domain. The time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry the SSS information.

[0056] In conjunction with some embodiments of the second aspect, in some embodiments, at least a portion of the first class symbols mapped on at least one first symbol are used to carry PSS information.

[0057] In conjunction with some embodiments of the second aspect, in some embodiments, a portion of the time-frequency sequence within a first-class symbol mapped on at least one first symbol is used to carry PSS information; the method further includes: receiving auxiliary synchronization signal SSS information on a second time-frequency resource, wherein the second time-frequency resource occupies another portion of the first-class symbol mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry SSS information.

[0058] In conjunction with some embodiments of the second aspect, in some embodiments, time-frequency sequences on all or part of the first class symbols mapped on at least one first symbol are used to carry PSS information; the method further includes: receiving SSS information on a third time-frequency resource, the third time-frequency resource occupying at least one first symbol in the time domain, the first symbol occupied by the third time-frequency resource being different from the first symbol occupied by the first time-frequency resource.

[0059] In conjunction with some embodiments of the second aspect, in some embodiments, the first time-frequency resource occupies a plurality of consecutive first symbols in the time domain.

[0060] In conjunction with some embodiments of the second aspect, in some embodiments, the number of at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

[0061] In conjunction with some embodiments of the second aspect, in some embodiments, the number of resource units occupied by at least one first symbol in the frequency domain is equal to or greater than the second value.

[0062] In conjunction with some embodiments of the second aspect, in some embodiments, the first time-frequency resource occupies a portion of a resource unit within at least one first symbol in the frequency domain.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes: receiving broadcast information on a fourth time-frequency resource, the fourth time-frequency resource occupying at least one first symbol in the time domain.

[0064] In conjunction with some embodiments of the second aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the first time-frequency resource in the frequency domain.

[0066] In conjunction with some embodiments of the second aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the third time-frequency resource, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0067] In conjunction with some embodiments of the second aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the third time-frequency resource in the frequency domain.

[0068] In conjunction with some embodiments of the second aspect, in some embodiments, PSS information is used for time-frequency synchronization of a first receiver and a second receiver in a terminal, the first receiver is used to receive a wake-up signal, and the wake-up signal is used to wake up the second receiver.

[0069] In conjunction with some embodiments of the second aspect, in some embodiments, the first receiver supports the modulation scheme of the second symbol, and the second receiver supports the modulation scheme of the first symbol.

[0070] Thirdly, embodiments of this disclosure provide a communication device, which is a network device, including: a transceiver module configured to transmit PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, and each first symbol is mapped to at least one second symbol.

[0071] In conjunction with some embodiments of the third aspect, in some embodiments, the second symbol is a first-class symbol or a second-class symbol.

[0072] In conjunction with some embodiments of the third aspect, in some embodiments, a pattern consisting of a first type of symbol and a second type of symbol mapped on at least one first symbol is used to indicate PSS information.

[0073] In conjunction with some embodiments of the third aspect, in some embodiments, the transceiver module is further configured to transmit auxiliary synchronization signal SSS information on a second time-frequency resource, wherein the second time-frequency resource occupies all first-class symbols mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry the SSS information.

[0074] In conjunction with some embodiments of the third aspect, in some embodiments, at least a portion of the first class symbols mapped on at least one first symbol are used to carry PSS information.

[0075] In conjunction with some embodiments of the third aspect, in some embodiments, a portion of the first type of symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module is also configured to transmit auxiliary synchronization signal SSS information on a second time-frequency resource, the second time-frequency resource occupying another portion of the first type of symbols mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first type of symbols occupied by the second time-frequency resource is used to carry SSS information.

[0076] In conjunction with some embodiments of the third aspect, in some embodiments, the time-frequency sequence of all or part of the first class symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module is also configured to transmit SSS information on a third time-frequency resource, the third time-frequency resource occupying at least one first symbol in the time domain, and the first symbol occupied by the third time-frequency resource being different from the first symbol occupied by the first time-frequency resource.

[0077] In conjunction with some embodiments of the third aspect, in some embodiments, the first time-frequency resource occupies a consecutive plurality of first symbols in the time domain.

[0078] In conjunction with some embodiments of the third aspect, in some embodiments, the number of at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

[0079] In conjunction with some embodiments of the third aspect, in some embodiments, the number of resource units occupied by at least one first symbol in the frequency domain is equal to or greater than the second value.

[0080] In conjunction with some embodiments of the third aspect, in some embodiments, the first time-frequency resource occupies a portion of a resource unit within at least one first symbol in the frequency domain.

[0081] In conjunction with some embodiments of the third aspect, in some embodiments, the transceiver module is further configured to transmit broadcast information on a fourth time-frequency resource, which occupies at least one first symbol in the time domain.

[0082] In conjunction with some embodiments of the third aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0083] In conjunction with some embodiments of the third aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the first time-frequency resource in the frequency domain.

[0084] In conjunction with some embodiments of the third aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the third time-frequency resource, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0085] In conjunction with some embodiments of the third aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the third time-frequency resource in the frequency domain.

[0086] In conjunction with some embodiments of the third aspect, in some embodiments, PSS information is used for time-frequency synchronization of a first receiver and a second receiver in a terminal, the first receiver is used to receive a wake-up signal, and the wake-up signal is used to wake up the second receiver.

[0087] In conjunction with some embodiments of the third aspect, in some embodiments, the first receiver supports the modulation scheme of the second symbol, and the second receiver supports the modulation scheme of the first symbol.

[0088] Fourthly, embodiments of this disclosure provide a communication device, which is a terminal, comprising: a transceiver module configured to receive PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, and each first symbol is mapped to at least one second symbol.

[0089] In conjunction with some embodiments of the fourth aspect, in some embodiments, the second symbol is a first-class symbol or a second-class symbol.

[0090] In conjunction with some embodiments of the fourth aspect, in some embodiments, a pattern consisting of a first type of symbol and a second type of symbol mapped on at least one first symbol is used to indicate PSS information.

[0091] In conjunction with some embodiments of the fourth aspect, in some embodiments, the transceiver module is further configured to receive auxiliary synchronization signal SSS information on a second time-frequency resource, wherein the second time-frequency resource occupies all first-class symbols mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry the SSS information.

[0092] In conjunction with some embodiments of the fourth aspect, in some embodiments, at least a portion of the first class symbols mapped on at least one first symbol are used to carry PSS information.

[0093] In conjunction with some embodiments of the fourth aspect, in some embodiments, a portion of the first type of symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module is further configured to receive auxiliary synchronization signal SSS information on a second time-frequency resource, the second time-frequency resource occupying another portion of the first type of symbols mapped on at least one first symbol in the time domain, the time-frequency sequence on the first type of symbols occupied by the second time-frequency resource being used to carry SSS information.

[0094] In conjunction with some embodiments of the fourth aspect, in some embodiments, the time-frequency sequence on all or part of the first class symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module is also configured to receive SSS information on a third time-frequency resource, the third time-frequency resource occupying at least one first symbol in the time domain, and the first symbol occupied by the third time-frequency resource being different from the first symbol occupied by the first time-frequency resource.

[0095] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first time-frequency resource occupies a plurality of consecutive first symbols in the time domain.

[0096] In conjunction with some embodiments of the fourth aspect, in some embodiments, the number of at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

[0097] In conjunction with some embodiments of the fourth aspect, in some embodiments, the number of resource units occupied by at least one first symbol in the frequency domain is equal to or greater than the second value.

[0098] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first time-frequency resource occupies a portion of a resource unit within at least one first symbol in the frequency domain.

[0099] In conjunction with some embodiments of the fourth aspect, in some embodiments, the transceiver module is further configured to receive broadcast information on a fourth time-frequency resource, which occupies at least one first symbol in the time domain.

[0100] In conjunction with some embodiments of the fourth aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource; or, the first symbol occupied by the fourth time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0101] In conjunction with some embodiments of the fourth aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the first time-frequency resource in the frequency domain.

[0102] In conjunction with some embodiments of the fourth aspect, in some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the third time-frequency resource, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0103] In conjunction with some embodiments of the fourth aspect, in some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the third time-frequency resource in the frequency domain.

[0104] In conjunction with some embodiments of the fourth aspect, in some embodiments, the PSS information is used for time-frequency synchronization of a first receiver and a second receiver in a terminal, the first receiver is used to receive a wake-up signal, and the wake-up signal is used to wake up the second receiver.

[0105] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first receiver supports the modulation scheme of the second symbol, and the second receiver supports the modulation scheme of the first symbol.

[0106] Fifthly, embodiments of this disclosure provide a communication device, comprising: one or more processors; wherein the communication device is configured to perform a communication method as described in any of the first to second aspects.

[0107] In a sixth aspect, embodiments of this disclosure provide a communication system, including: a network device and a terminal; the network device is configured to implement the communication method as described in the first aspect; and the terminal is configured to implement the communication method as described in the second aspect.

[0108] In a seventh aspect, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform a communication method as described in any of the first to second aspects.

[0109] Eighthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform a communication method as described in any of the first to second aspects.

[0110] In a ninth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the method as described in an optional implementation of any of the first to second aspects.

[0111] In a tenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described according to an optional implementation of any of the first to second aspects described above.

[0112] It is understood that the aforementioned network devices, terminals, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0113] This disclosure provides a communication method, network device, terminal, communication system, and storage medium. In some embodiments, the terms "communication method," "information processing method," "signal transmission method," and "time-frequency resource determination method" can be used interchangeably, as can the terms "information processing system," "communication system," and "signal transmission system."

[0114] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0115] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0116] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0117] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0118] In the embodiments disclosed herein, "multiple" refers to two or more.

[0119] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0120] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0121] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0122] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0123] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0124] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0125] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0126] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0127] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0128] In some embodiments, the terms "network devices", "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", "node", "access network node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femtocell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", and "bandwidth part (BWP)" can be used interchangeably.

[0129] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0130] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0131] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0132] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0133] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0134] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0135] Figure 1A is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1A, the communication system 100 includes a network device 101 and a terminal 102.

[0136] In some embodiments, terminal 102 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0137] In some embodiments, network device 101 may include access network device and / or core network device. Access network device is, for example, a node or device that connects a terminal to a wireless network. Access network device may include, but is not limited to, at least one of the following: evolved NodeB (eNB), next-generation eNB (ng-eNB), next-generation NodeB (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system.

[0138] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0139] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0140] In some embodiments, the core network equipment may be a single device including a first network element, or it may be multiple devices or a group of devices, each including a first network element. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0141] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0142] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1A, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1A are illustrative. The communication system may include all or some of the main bodies in FIG1A, or it may include other main bodies outside of FIG1A. The number and form of each main body are arbitrary. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0143] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0144] The following is an explanation and interpretation of the terminology used in this disclosure.

[0145] 1. LR:

[0146] To further reduce terminal power consumption, the 3rd Generation Partnership Project (3GPP) introduced Low Power Response (LR) technology in terminals. In this case, the terminal includes both MR (Mode) and LR. When the terminal is in a power-saving state, it can put the MR into deep sleep and activate the LR to listen for a low power wake-up signal (LP-WUS). When the LR detects an LP-WUS signal for the terminal, the terminal activates the MR and performs normal data transmission. This significantly reduces the power consumption of the MR, and the LR power consumption is also very low, resulting in greater power saving gains.

[0147] In some embodiments, in order to detect LP-WUS, the terminal needs to obtain LP-WUS information transmitted by the network device.

[0148] In some embodiments, LR performs time-frequency synchronization by detecting LP-SS.

[0149] In some embodiments, LP-WUS and LP-SS employ keying modulation. In one example, the keying modulation includes at least one of the following: on-off keying (OOK), amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK), binary phase shift keying (BPSK), and minimum shift keying (MSK).

[0150] In one example, LP-WUS and LP-SS use OOK modulation.

[0151] In some embodiments, OOK identifies information by the presence or absence of a signal. For example, the presence of a signal (ON) during the signal sampling time indicates a bit value of 1, and the absence of a signal (OFF) during the signal sampling time indicates a bit value of 0. In some embodiments, the signal transmitted during the sampling time is also referred to as the OOK symbol.

[0152] In some embodiments, the simple modulation characteristics of the OOK symbol allow the receiver to acquire information solely through energy detection, and also enable the OOK symbol to be demodulated and received using simple devices, making it suitable as a modulation scheme for LP-WUS and LP-SS.

[0153] In some embodiments, the name of LR is not limited, and it may be, for example, "low power wake-up receiver (LP-WUR)," "power-saving receiver," "wake-up receiver," "auxiliary receiver," "auxiliary circuit," "communication auxiliary module," etc. In one example, the first receiver is LR.

[0154] In some embodiments, the name of the deep sleep state is not limited, and it may be, for example, "hibernation state", "sleep state", "power saving state", "low power state", etc.

[0155] In some embodiments, the receiver can support at least two types. One type of receiver only supports envelope detection of OOK symbols of LP-WUS, hereinafter referred to as the OOK LR. This type of receiver has relatively poor link performance. The other type of receiver can detect the sequence carried by the OOK ON symbols of LP-WUS, thereby improving link performance, hereinafter referred to as the OFDM LR.

[0156] In some embodiments, the name of the MR is not limited, and it may be, for example, "main radio," "main circuit," "communication main module," etc. In one example, the second receiver is the MR.

[0157] II. SSB:

[0158] Figure 1B is a schematic diagram of the SSB structure as specified in the protocol. As shown in Figure 1B, the SSB occupies 20 consecutive physical resource blocks (PRBs) within four consecutive OFDM symbols. In the first OFDM symbol, the middle 127 resource elements (REs) carry the primary synchronization signal (PSS), while the other REs are idle. In the third OFDM symbol, the middle 127 resource elements (REs) carry the secondary synchronization signal (SSS), and the four outermost PRBs on each side can carry the physical broadcast channel block (PBCH), while the other REs are idle. The second and fourth OFDM symbols carry the PBCH.

[0159] In some embodiments, taking a 5G system as an example, within a 5ms half-frame, depending on the carrier frequency, the access network device can send up to 4, 8, or 64 SSBs.

[0160] In some embodiments, the terminal's MR synchronizes with the base station by receiving SSB, which is necessary to perform the subsequent initial access process.

[0161] In some embodiments, the terminal's LR synchronizes with the base station by receiving LP-SS, thereby obtaining LP-WUS information transmitted by the network device.

[0162] In some embodiments, independent transmission of SSB and LP-SS can lead to additional resource overhead. Therefore, how to simultaneously meet the synchronization requirements of MR and LR while controlling resource overhead is an urgent problem to be solved.

[0163] This disclosure provides a communication method, network device, terminal, communication system, and storage medium, which considers mapping at least one second symbol on each of at least one first symbol and transmitting a PSS on the second symbol, thereby achieving the synchronization requirements of MR and LR simultaneously.

[0164] In some embodiments, LR supports the modulation scheme of the second symbol, and MR supports the modulation scheme of the first symbol. In some embodiments, MR may also support the modulation scheme of the second symbol.

[0165] In some embodiments, the modulation scheme of the first symbol and the modulation scheme of the second symbol are different.

[0166] In some embodiments, the modulation scheme of the first symbol includes at least one of the following: ASK, FSK, PSK, BPSK, MSK, quadrature amplitude modulation (QAM), or orthogonal frequency division multiplexing (OFDM).

[0167] In some embodiments, the modulation scheme of the second symbol includes at least one of the following: OOK, ASK, FSK, PSK, BPSK, MSK.

[0168] In some embodiments, the second symbol is either a first-class symbol or a second-class symbol. In some embodiments, the first-class symbol may carry information.

[0169] In one example, the first symbol is the OFDM symbol, the second symbol is the OOK symbol, the first type of symbol is the ON symbol, and the second type of symbol is the OFF symbol.

[0170] In this disclosure, the sequence carried by the OOK symbol can be defined as being carried only by the OOK ON symbol, or it can be defined as being carried by both the OOK ON and OOK OFF symbols, except that the part of the sequence carried by the OOK OFF symbol consists of all zero elements. The method of this disclosure is described below using the sequence carried by the OOK ON symbol, and this method can be applied to the case where both the OOK ON and OOK OFF symbols carry a complete sequence.

[0171] Figure 2A is a schematic diagram of a first interaction of a communication method provided according to an embodiment of the present disclosure. As shown in Figure 2A, the present disclosure relates to a communication method. Executed by a communication system 100, the communication method includes steps S2101 to S2102.

[0172] In this embodiment of the disclosure, the transmission process of SSB is illustrated using OFDM symbol as the first symbol and OOK symbol as the second symbol.

[0173] In step S2101, the network device determines the time-frequency resources.

[0174] In some embodiments, time-frequency resources are used to transmit SSBs. In some embodiments, an SSB includes PSS information, SSS information, and broadcast information.

[0175] In some embodiments, the time-frequency resource includes at least one of the following: a first time-frequency resource, a second time-frequency resource, a third time-frequency resource, and a fourth time-frequency resource. The time-frequency resource can be at least one physical resource, which includes at least one of the following: a resource block (RB), a PRB, and a RE.

[0176] In some embodiments, the first time-frequency resource is used to transmit PSS information. In some embodiments, the PSS information is used for time-frequency synchronization of the terminal's MR and LR.

[0177] In some embodiments, the first time-frequency resource occupies at least one OFDM symbol in the time domain (denoted as the first OFDM symbol), and each first OFDM symbol is mapped to at least one OOK symbol.

[0178] In some embodiments, where there is one first OFDM symbol and multiple OOK symbols within the first OFDM symbol, multiple OOK symbols are mapped onto one first OFDM symbol. Alternatively, one first OFDM symbol is divided into multiple OOK symbols. Alternatively, one first OFDM symbol carries multiple OOK symbols. Alternatively, multiple OOK symbols occupy all or part of the time-domain resources within one first OFDM symbol.

[0179] In some embodiments, Figures 2B and 2C are schematic diagrams of a structure that maps multiple OOK symbols onto an OFDM symbol. As shown in Figure 2B, the time length of the multiple OOK symbols can be equal to the time length of a first OFDM symbol, or, as shown in Figure 2C, the time length of the multiple OOK symbols can be less than the time length of a first OFDM symbol.

[0180] In some embodiments, as shown in FIG2B, multiple OOK symbols may be consecutive in the time domain.

[0181] In some embodiments, as shown in FIG2C, multiple OOK symbols may be mapped at intervals onto a first OFDM symbol; in other words, there is an interval between each OOK symbol among the multiple OOK symbols. In some embodiments, the time length of the intervals between the multiple OOK symbols may be equal or unequal.

[0182] In some embodiments, Figure 2D is a schematic diagram of a structure in which multiple OOK symbols are mapped onto each OFDM symbol in a plurality of OFDM symbols. Each of the plurality of first OFDM symbols is mapped with at least one OOK symbol. The number of OOK symbols mapped to each first OFDM symbol may be equal or unequal.

[0183] In one example, the first time-frequency resource occupies one OFDM symbol, and one OFDM symbol maps to four OOK symbols. Assuming the time length of one OFDM symbol is 1024, where 1024 can be understood as the number of sampling points acquired within one OFDM symbol's time, meaning one OFDM symbol includes 1024 sample values. Therefore, the length of each OOK symbol can be 256, or in other words, each OOK symbol includes 256 sample values.

[0184] In some embodiments, when there are multiple first OFDM symbols, the multiple first OFDM symbols may be continuous in the time domain, or the multiple first OFDM symbols may be spaced apart in the time domain.

[0185] In some embodiments, the number of first OFDM symbols can be equal to or greater than a first value. The first value is the number of OFDM symbols occupied by the PSS as specified in the protocol. In one example, the first value is 1. In one example, the number of first OFDM symbols can be 1, 2, 3, or 4.

[0186] In some embodiments, the number of resource units occupied by an OFDM symbol in the frequency domain is equal to or greater than a second value. The second value is the number of resource units occupied by an OFDM symbol in an SSB as specified in the protocol. In one example, a resource unit is an RB, a PRB, or a subcarrier.

[0187] In one example, when the resource element is a PRB, the second value is 20. In another example, when the resource element is a subcarrier, the second value is 240. In one example, the number of frequency domain resources occupied by an OFDM symbol in the frequency domain can be 20 PRBs, 24 PRBs, or 28 PRBs. In another example, the number of frequency domain resources occupied by an OFDM symbol in the frequency domain can be 240 subcarriers, 288 subcarriers, or 336 subcarriers.

[0188] In some embodiments, the first time-frequency resource occupies a portion of the resource cells within at least one first OFDM symbol in the frequency domain. In one example, where the total resource cells within the first OFDM symbol are 240 subcarriers, the first time-frequency resource occupies 127 subcarriers within the OFDM symbol.

[0189] In some embodiments, the OOK symbol is an ON symbol or an OFF symbol. A first OFDM symbol may map one ON symbol. Alternatively, a first OFDM symbol may map one OFF symbol. Alternatively, a first OFDM symbol may map one ON symbol and one OFF symbol. Alternatively, a first OFDM symbol may map one ON symbol and multiple OFF symbols. Alternatively, a first OFDM symbol may map multiple ON symbols and one OFF symbol.

[0190] In some embodiments, the number of ON symbols and the number of OFF symbols may be equal.

[0191] In some embodiments, the indication of PSS information includes at least one of the following:

[0192] Method 1: The pattern formed by combining the ON and OFF symbols within the OFDM symbol indicates PSS information.

[0193] Method 2: The time-frequency sequence on the ON symbol is used to indicate PSS information.

[0194] In some embodiments, for mode one, the pattern formed by arranging all ON symbols and all OFF symbols within the first OFDM symbol can indicate PSS information. In some embodiments, for M OOK symbols, including K ON symbols and (MK) OFF symbols, different arrangements and combinations can form different patterns that indicate different PSS information, provided that the number of ON symbols and the number of OFF symbols remain constant. For example, M = 2K.

[0195] In some embodiments, the ON and OFF symbols can be combined to form three patterns, which can be used to indicate three different PSS messages. For example, the three different PSS messages correspond to... In some embodiments, This is the intra-group identifier for Physical Cell Identities (PCIs). The physical layer distinguishes different cells using PCIs. There are a total of 504 PCIs, which are divided into 168 different groups (denoted as...). Each group includes 3 distinct group identifiers (denoted as ). In some embodiments, the PSS is used to transmit the group ID, i.e.

[0196] In some embodiments, for Method 2, time-frequency sequences on at least a portion of the ON symbols mapped within at least one first OFDM symbol are used to carry PSS information. In some embodiments, time-frequency sequences on all ON symbols mapped within at least one first OFDM symbol are used to carry PSS information, or time-frequency sequences on a portion of the ON symbols mapped within at least one first OFDM symbol are used to carry PSS information.

[0197] In some embodiments, the ON symbols carrying PSS information may be continuous or spaced out in the time domain.

[0198] In some embodiments, network devices can simultaneously send PSS information using both method one and method two to increase the terminal's freedom in receiving the information. At the same time, the terminal can verify the PSS information obtained by the two methods to increase the reliability of PSS information transmission.

[0199] In some embodiments, the second or third time-frequency resource is used to transmit SSS information.

[0200] In some embodiments, the second time-frequency resource is used to transmit SSS information. The second time-frequency resource occupies the ON symbol mapped within the first OFDM symbol. In other words, the OFDM symbol containing the ON symbol occupied by the second time-frequency resource is the same as the OFDM symbol occupied by the first time-frequency resource.

[0201] In some embodiments, the second time-frequency resource occupies at least a portion of the ON symbols mapped within the first OFDM symbol in the time domain. In some embodiments, the second time-frequency resource occupies all the ON symbols mapped within the first OFDM symbol in the time domain, or the second time-frequency resource occupies a portion of the ON symbols mapped within the first OFDM symbol in the time domain.

[0202] In some embodiments, the time-frequency sequence on the ON symbol occupied by the second time-frequency resource is used to carry SSS information.

[0203] In some embodiments, the ON symbols carrying SSS information may be continuous or spaced out in the time domain.

[0204] In some embodiments, as shown in FIG2E, when the PSS information adopts mode one indication, within the first OFDM symbol, the second time-frequency resource occupies all ON symbols mapped on the first OFDM symbol, and the time-frequency sequence of all ON symbols carries SSS information.

[0205] In some embodiments, as shown in FIG2F, when the PSS information is indicated by mode one and mode two (i.e., the time-frequency sequence of a portion of the ON symbols within the first OFDM symbol carries the PSS information), within the first OFDM symbol, the second time-frequency resource occupies another portion of the ON symbols mapped on the first OFDM symbol, and the time-frequency sequence of the other portion of the ON symbols carries the SSS information.

[0206] In some embodiments, the time-frequency sequences on multiple ON symbols can carry the same SSS information. This recurring SSS information helps improve the synchronization performance of PSS information. For example, when a terminal detects PSS information indicated by a pattern composed of ON and OFF symbols, although the terminal does not yet know the information carried by the time-frequency sequences on the ON symbols, it can know that the time-frequency sequences on the two ON symbols carry the same information. This structure improves the synchronization performance based on PSS information.

[0207] In some embodiments, the third time-frequency resource is used to transmit SSS information. The third time-frequency resource occupies at least one OFDM symbol in the time domain (denoted as the third OFDM symbol), and the third OFDM symbol is different from the first OFDM symbol.

[0208] In some embodiments, as shown in FIG2G, the third OFDM symbol is located after the last first OFDM symbol in the first OFDM symbol.

[0209] In some embodiments, as shown in FIG2H, there is a gap between the third OFDM symbol and the last first OFDM symbol in the first OFDM symbols.

[0210] In some embodiments, the multiple third OFDM symbols occupied by the third time-frequency resource are continuous in the time domain.

[0211] In some embodiments, the fourth time-frequency resource is used to transmit broadcast information.

[0212] In some embodiments, the fourth time-frequency resource is used to carry the PBCH, on which broadcast information is transmitted. In this case, the broadcast information can also be described as PBCH information. The fourth time-frequency resource occupies at least one OFDM symbol (denoted as the fourth OFDM symbol).

[0213] In some embodiments, a portion of the OFDM symbols in the fourth OFDM symbol is the same as the first OFDM symbol. In other words, another portion of the OFDM symbols in the fourth OFDM symbol is different from the first OFDM symbol.

[0214] In some embodiments, the fourth OFDM symbol is the same as the first OFDM symbol.

[0215] In some embodiments, the fourth OFDM symbol is different from the first OFDM symbol.

[0216] In some embodiments, within the same OFDM symbol, the first time-frequency resource occupies a portion of the resource units within the same OFDM symbol in the frequency domain, and the fourth time-frequency resource occupies another portion of the resource units within the same OFDM symbol.

[0217] In some embodiments, within the same OFDM symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the first time-frequency resource in the frequency domain.

[0218] In some embodiments, where the third OFDM symbol differs from the first OFDM symbol, a portion of the fourth OFDM symbol is identical to the third OFDM symbol. In other words, another portion of the fourth OFDM symbol differs from the third OFDM symbol.

[0219] In some embodiments, within the same OFDM symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the third time-frequency resource in the frequency domain.

[0220] In step S2102, the network device sends an SSB on the time-frequency resource.

[0221] In some embodiments, the terminal receives SSB on time-frequency resources.

[0222] In some embodiments, when the time-frequency resources include a first time-frequency resource, a second time-frequency resource, and a fourth time-frequency resource, the network device transmits PSS information on the first time-frequency resource, transmits SSS information on the second time-frequency resource, and transmits PBCH information on the fourth time-frequency resource.

[0223] In some embodiments, the terminal receives PSS information on a first time-frequency resource, receives SSS information on a second time-frequency resource, and receives PBCH information on a fourth time-frequency resource.

[0224] In some embodiments, when the time-frequency resources include a first time-frequency resource, a third time-frequency resource, and a fourth time-frequency resource, the network device transmits PSS information on the first time-frequency resource, transmits SSS information on the third time-frequency resource, and transmits PBCH information on the fourth time-frequency resource.

[0225] In some embodiments, the terminal receives PSS information on a first time-frequency resource, receives SSS information on a third time-frequency resource, and receives PBCH information on a fourth time-frequency resource.

[0226] In some embodiments, the terminal can receive PSS information from different SSB cycles for detection, and improve synchronization performance by combining multiple PSS information from different SSB cycles.

[0227] In one example, as shown in Figure 2I, the network device transmits an SSB, which occupies 20 consecutive PRBs within four consecutive OFDM symbols. The first OFDM symbol carries PSS information, the third OFDM symbol carries SSS information, four PRBs on each side of the SSS carry PBCH information, and the second and fourth OFDM symbols both carry PBCH information. Correspondingly, the terminal receives PSS information on the first OFDM symbol, SSS information on the third OFDM symbol, and PBCH information on the second to fourth OFDM symbols. In one example, the PSS information uses OOK modulation and is modulated onto four OOK symbols within one OFDM symbol. In one example, the ON-OFF pattern of these four OOK symbols can carry PSS information. In another example, the time-frequency sequence of some or all of the ON symbols in the four OOK symbols can also carry PSS information.

[0228] In one example, as shown in Figure 2J, the network device transmits an SSB, which occupies 20 consecutive PRBs within 5 consecutive OFDM symbols. The first and second OFDM symbols are used to carry PSS information, the fourth OFDM symbol is used to carry SSS information, four PRBs on each side of the SSS are used to carry PBCH information, and the third and fifth OFDM symbols are both used to carry PBCH information. Correspondingly, the terminal receives PSS information on the first and second OFDM symbols, SSS information on the fourth OFDM symbol, and PBCH information on the third to fifth OFDM symbols. In one example, the PSS uses OOK modulation and is modulated onto 8 OOK symbols within 2 consecutive OFDM symbols. In one example, the ON-OFF pattern of these 8 OOK symbols can carry PSS information. In another example, the time-frequency sequence of some or all of the ON symbols in the 8 OOK symbols can also carry PSS information.

[0229] In one example, as shown in Figure 2K, the network device transmits an SSB, which occupies 24 consecutive PRBs within four consecutive OFDM symbols. The first and second OFDM symbols are used to carry the PSS and SSS, respectively. Six PRBs on each side of the PSS or SSS serve as protection PRBs. The third and fourth OFDM symbols are both used to carry the PBCH. Correspondingly, the terminal receives PSS and SSS information on the first and second OFDM symbols, and receives PBCH information on the third and fourth OFDM symbols. In one example, the PSS uses OOK modulation and is modulated onto eight OOK symbols within two consecutive OFDM symbols. In one example, the ON-OFF pattern of these eight OOK symbols can carry PSS information. In another example, the time-frequency sequence of all ON symbols among the eight OOK symbols can carry SSS information. In one example, the time-frequency sequence of a portion of the ON symbols is used to carry PSS information, while the time-frequency sequence of another portion of the ON symbols is used to carry SSS information.

[0230] In one example, as shown in Figure 2L, the network device transmits an SSB, which occupies 20 consecutive PRBs within four consecutive OFDM symbols. The first and second OFDM symbols are used to carry the PSS and SSS, with two PRBs on each side of the PSS or SSS serving as protection PRBs. Two additional PRBs on each side of the PSS or SSS are also used to carry PBCH information. The third and fourth OFDM symbols are both used to carry PBCH. Correspondingly, the terminal receives PSS and SSS information on the first and second OFDM symbols, and receives PBCH information on the first through fourth OFDM symbols. In one example, the PSS uses OOK modulation and is modulated onto eight OOK symbols within two consecutive OFDM symbols. In one example, the ON-OFF pattern of these eight OOK symbols can carry PSS information. In another example, the time-frequency sequence of all ON symbols among the eight OOK symbols can carry SSS information. In one example, the time-frequency sequence of a portion of the ON symbols is used to carry PSS information, while the time-frequency sequence of another portion of the ON symbols is used to carry SSS information.

[0231] In one example, as shown in Figure 2M, the network device transmits an SSB. The SSB occupies 24 consecutive PRBs within four consecutive OFDM symbols. The first to third OFDM symbols are used to carry the PSS and SSS. Two PRBs on each side of the PSS or SSS serve as protection PRBs. Four PRBs on each side of the PSS or SSS are used to carry the PBCH. The fourth OFDM symbol is used entirely to carry the PBCH. Correspondingly, the terminal receives PSS and SSS information on the first to third OFDM symbols and PBCH information on the first to fourth OFDM symbols. In one example, the PSS uses OOK modulation and is modulated onto 12 OOK symbols within three consecutive OFDM symbols. In one example, the ON-OFF pattern of these 12 OOK symbols can carry PSS information. In another example, the time-frequency sequence of all ON symbols among the 12 OOK symbols can carry SSS information. In one example, the time-frequency sequence of a portion of the ON symbols is used to carry PSS information, while the time-frequency sequence of another portion of the ON symbols is used to carry SSS information.

[0232] In one example, as shown in Figure 2N, the network device transmits an SSB, which occupies 28 consecutive PRBs within four consecutive OFDM symbols. The first to fourth OFDM symbols are used to carry the PSS and SSS. Two PRBs on each side of the PSS or SSS serve as protection PRBs, and six PRBs on each side of the PSS or SSS are used to carry the PBCH. Correspondingly, the terminal receives PSS and SSS information on the first to fourth OFDM symbols and PBCH information on the first to fourth OFDM symbols. In one example, the PSS uses OOK modulation and is modulated onto 16 OOK symbols within four consecutive OFDM symbols. In one example, the ON-OFF pattern of these 16 OOK symbols can carry PSS information. In another example, the time-frequency sequence of all ON symbols among the 16 OOK symbols can carry SSS information. In one example, the time-frequency sequence of a portion of the ON symbols is used to carry PSS information, while the time-frequency sequence of another portion of the ON symbols is used to carry SSS information.

[0233] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2102. For example, step S2101 may be implemented as a separate embodiment. For example, step S2102 may be implemented as a separate embodiment.

[0234] In some embodiments, terms such as "indication method" and "bearing method" can be used interchangeably.

[0235] In some embodiments, the terms “PSS”, “PSS information”, and “PSS sequence” can be used interchangeably.

[0236] In some embodiments, the terms "SSS", "SSS information", and "SSS sequence" can be used interchangeably.

[0237] In some embodiments, the terms "PBCH", "PBCH information", "PBCH sequence", and "broadcast information" can be used interchangeably.

[0238] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0239] In some embodiments, the terms “carrying,” “including,” “containing,” and “encapsulating” can be used interchangeably.

[0240] In some embodiments, the terms “radio”, “wireless”, “radioaccessnetwork (RAN)”, “accessnetwork (AN)”, and “RAN-based” can be used interchangeably.

[0241] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0242] In some embodiments, terms such as “send,” “transmit,” “report,” “transmit,” “request,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0243] In some embodiments, the terms “issue,” “return,” “feedback,” “response,” and “acknowledgement” can be used interchangeably.

[0244] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0245] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0246] Figure 3A is a schematic flowchart illustrating a communication method performed by a network device according to an embodiment of the present disclosure. As shown in Figure 3A, the present disclosure relates to a communication method performed by a network device. The communication method includes step S3101.

[0247] In step S3101, PSS information is sent on the first time-frequency resource.

[0248] The optional implementation of step S3101 can be found in the optional implementation of step S2102 in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0249] Figure 3B is a schematic flowchart illustrating a communication method executed by a terminal according to an embodiment of the present disclosure. As shown in Figure 3B, the present disclosure relates to a communication method executed by a terminal. The communication method includes step S3201.

[0250] In step S3201, PSS information is received on the first time-frequency resource.

[0251] The optional implementation of step S3201 can be found in the optional implementation of step S2102 in Figure 2A and other related parts in the embodiments involved in Figure 2A, which will not be repeated here.

[0252] In the following, the technical solutions of the embodiments of this disclosure will be described by way of specific implementation.

[0253] Independent transmission of SSB and LP-SS incurs additional resource overhead. This disclosure proposes a unified SSB (SSB-U) design that simultaneously satisfies the requirements of both SSB and LP-SS, thereby minimizing resource overhead while meeting the synchronization performance requirements of MR and LR. The SSB-U still comprises three parts: PSS, SSS, and PBCH. LR can detect only the PSS portion, while MR can detect the entire SSB-U. To support LR operation, the PSS in the SSB-U needs to be based on OOK modulation. The aforementioned OOK-modulated PSS is also used for MR synchronization detection. The ON-FF pattern of the OOK symbol in the PSS can carry PSS information, for example, one of three possibilities. Time-domain or frequency-domain sequences can be further carried on each OOK ON symbol of the PSS. Depending on the specific design, the time-domain or frequency-domain sequences of the OOK ON symbols in the PSS can also carry PSS information. A certain number of protection PRBs still need to be added on both sides of the PSS to reduce interference when the UE detects the PSS. Such protection PRBs need to meet the PSS detection performance requirements of both MR and LR. In the following description, it is assumed that an OFDM symbol is divided into M OOK symbols, where M is a positive integer. In particular, M can be equal to 1, 2, 4, or 8.

[0254] In one embodiment of this disclosure, as shown in Figure 2I, the SSB-U adopts the same time-frequency resource structure as the 5G SSB. This disclosure does not limit the number of REs occupied by the PSS / SSS and the number of PRBs in the PBCH to be the same as in the 5G SSB. This disclosure does not limit the number of OFDM symbols in the PSS / SSS / PBCH to be the same as in the 5G SSB. The PSS uses OOK modulation and is mapped to M OOK symbols within an OFDM symbol. Generally, OOK ON symbols and OOK OFF symbols each occupy half. The ON-FF pattern of the aforementioned M OOK symbols can carry PSS information, for example, one of three possibilities. The sequence of OOK ON symbols of the aforementioned M OOK symbols can also carry PSS information. The processing method of the SSS and PBCH can follow the design method of the 5G SSB. In this method, because only OOK ON symbols can actually carry time-domain or frequency-domain sequences, the effective length of the PSS sequence is half the length of the 5G SSS, which to some extent affects the synchronization performance of MR and OFDM LR based on PSS. For OOK LR, synchronization is limited by using only M OOK symbols within a single OFDM symbol. This method improves synchronization performance by combining PSS detections within different SSB-U cycles.

[0255] In one embodiment of this disclosure, as shown in Figure 2J, the PSS employs OOK modulation and is mapped onto M2 OOK symbols within two consecutive OFDM symbols. M2 = 2*M. Alternatively, considering the influence of CP, M2 can be greater than 2*M. Generally, OOK ON symbols and OOK OFF symbols each account for half. The ON-FF pattern of the aforementioned M2 OOK symbols can carry PSS information, for example, using three ON-OFF patterns to indicate one of three possibilities respectively. The sequence of OOK ON symbols of the aforementioned 2M OOK symbols can also carry PSS information. The processing method of SSS and PBCH can follow the design method of 5G SSB. This disclosure does not limit the number of REs occupied by PSS / SSS and the number of PRBs of PBCH to be the same as those of 5G SSB. This disclosure does not limit the number of OFDM symbols of SSS / PBCH to be the same as those of 5G SSB. In this method, the effective length of the PSS sequence can be consistent with the length of 5G SSS, thereby ensuring the synchronization performance of MR and OFDM LR based on PSS. For OOK LR, synchronization is achieved using M2 OOK symbols within two OFDM symbols, enhancing synchronization accuracy. Furthermore, by combining PSS detection within different SSB-U cycles, synchronization performance can be further improved. This disclosure does not limit the number of REs occupied by the PSS / SSS and the number of PRBs in the PBCH to be the same as in 5G SSB.

[0256] In one embodiment of this disclosure, as shown in Figure 2K, the PSS employs OOK modulation and is mapped onto M² OOK symbols within two consecutive OFDM symbols. M² = 2*M. Alternatively, considering the influence of CP, M² can be greater than 2*M. Generally, OOK ON symbols and OOK OFF symbols each account for half. The ON-FF pattern of the aforementioned M² OOK symbols can carry PSS information; for example, three ON-OFF patterns can be used to indicate one of three possibilities. SSS information can be indicated by carrying a time-domain or frequency-domain sequence on the OOK ON symbols. The same SSS sequence can be repeatedly mapped onto multiple OOK ON symbols, and this recurring OOK ON symbols helps improve PSS synchronization performance. For example, when detecting PSS, although the UE does not yet know the sequence carried on the OOK ON symbols, the UE can know that the sequences of two OOK ON symbols are the same. Such a structure can be used to improve PSS-based synchronization performance. Alternatively, the sequences of the first X OOK ON symbols of the aforementioned M² OOK symbols carry PSS information, where X ≥ 1, and the sequences of the other OOK ON symbols carry SSS information. For example, X = 1 or M. The SSS sequence carried on OOK ON can be used as the demodulation reference signal (DMRS) of PBCH. Let PSS / SSS occupy A PRBs, for example, A = 12. B guard PRBs are added on both sides of PSS / SSS, for example, B = 6, to reduce interference from PSS / SSS detection and support power amplification of PSS / SSS. PBCH carries PBCH on A+2B PRBs at the same position in D other OFDM symbols, for example, D = 2 in Figure 2K. In this method, PSS-based synchronization performance of MR and LR is guaranteed by carrying PSS on OOK ON symbols of two OFDM symbols. For OOK LR, synchronization is completed using M2 OOK symbols within two OFDM symbols, enhancing synchronization accuracy. In addition, synchronization performance can be further improved by combining PSS detection in different SSB-U cycles. This disclosure does not limit the number of REs occupied by PSS / SSS to be the same as that of 5G SSB.

[0257] In one embodiment of this disclosure, as shown in Figure 2L, the PSS employs OOK modulation and is mapped onto M² OOK symbols within two consecutive OFDM symbols. M² = 2*M. Alternatively, considering the influence of CP, M² can be greater than 2*M. Generally, OOK ON symbols and OOK OFF symbols each account for half. The ON-FF pattern of the aforementioned M² OOK symbols can carry PSS information, for example, using three different ON-OFF patterns to indicate one of three possibilities. SSS information can be indicated by carrying a time-domain or frequency-domain sequence on the OOK ON symbols. The same SSS sequence can be repeatedly mapped onto multiple OOK ON symbols; this recurring OOK ON symbols helps improve PSS synchronization performance. For example, when detecting PSS, although the UE does not yet know the sequence carried on the OOK ON symbols, the UE can know that the sequences of two OOK ON symbols are the same. Such a structure can be used to improve PSS-based synchronization performance. Alternatively, the sequence of the first X OOK ON symbols of the aforementioned M² OOK symbols carries PSS information, where X ≥ 1, and the sequence of the other OOK ON symbols carries SSS information. For example, X = 1 or M. The SSS sequence carried on OOK ON can be used as the demodulation reference signal (DMRS) for PBCH. Let PSS / SSS occupy A PRBs, for example, A = 12. Add B guard PRBs on both sides of PSS / SSS, for example, B = 2, to reduce interference from PSS detection. Each of the C PRBs outside the guard PRBs on both sides can carry PBCH, for example, C = 2. To reduce the coding rate of PBCH, PBCH can be carried on A+2B+2C PRBs at the same position in D other OFDM symbols, for example, D = 2 in Figure 2L. In this method, by carrying PSS on the OOK ON symbols of two OFDM symbols, the synchronization performance of MR and LR based on PSS is further improved. For OOK LR, synchronization is completed using M2 OOK symbols within two OFDM symbols, enhancing synchronization accuracy. In addition, by combining PSS detection in different SSB-U cycles, the synchronization performance can be further improved. This disclosure does not restrict the number of REs occupied by PSS / SSS and the number of PRBs in PBCH to be the same as those in 5G SSB.

[0258] In one embodiment of this disclosure, as shown in Figure 2M, the PSS employs OOK modulation and is mapped onto M3 OOK symbols within three consecutive OFDM symbols. M3 = 3*M. Alternatively, considering the influence of CP, M3 can be greater than 3*M. Generally, OOK ON symbols and OOK OFF symbols each account for half. The ON-FF pattern of the aforementioned M3 OOK symbols can carry PSS information, for example, using three different ON-OFF patterns to indicate one of three possibilities. SSS information can be indicated by carrying a time-domain or frequency-domain sequence on the OOK ON symbols. The same SSS sequence can be repeatedly mapped onto multiple OOK ON symbols; this recurring OOK ON symbols helps improve PSS synchronization performance. For example, when detecting PSS, although the UE does not yet know the sequence carried on the OOK ON symbols, the UE can know that the sequences of two OOK ON symbols are the same. Such a structure can be used to improve PSS-based synchronization performance. Alternatively, the sequences of the first X OOK ON symbols of the aforementioned M3 OOK symbols carry PSS information, where X ≥ 1, and the sequences of the other OOK ON symbols carry SSS information. For example, X = 1 or M. The SSS sequence carried on OOK ON can be used as the demodulation reference signal (DMRS) for PBCH. Let PSS / SSS occupy A PRBs, for example, A = 12. Add B guard PRBs on both sides of PSS / SSS, for example, B = 2, to reduce interference from PSS detection. Each of the C PRBs outside the guard PRBs on both sides can carry PBCH, for example, C = 4. To reduce the coding rate of PBCH, PBCH can be carried on A+2B+2C PRBs at the same position in D other OFDM symbols, for example, D = 1 in Figure 2M. In this method, by carrying PSS on the OOK ON symbols of three OFDM symbols, the synchronization performance of MR and LR based on PSS is guaranteed. For OOK LR, synchronization is completed using M3 OOK symbols within the three OFDM symbols, enhancing synchronization accuracy. In addition, by combining PSS detection in different SSB-U cycles, the synchronization performance can be further improved. This disclosure does not restrict the number of REs occupied by PSS / SSS and the number of PRBs in PBCH to be the same as those in 5G SSB.

[0259] In one embodiment of this disclosure, as shown in FIG2N, the PSS employs OOK modulation and is mapped onto M4 OOK symbols within four consecutive OFDM symbols. M4 = 4 * M. Alternatively, considering the influence of CP, M4 can be greater than 4 * M. Generally, OOK ON symbols and OOK OFF symbols each account for half. The ON-FF pattern of the aforementioned M4 OOK symbols can carry PSS information, for example, using three ON-OFF patterns to indicate one of the three possibilities respectively. SSS information can be indicated by carrying time-domain or frequency-domain sequences on the OOK ON symbols. The same SSS sequence can be repeatedly mapped onto multiple OOK ON symbols, and this repeated OOK ON symbols helps improve PSS synchronization performance. For example, when detecting PSS, although the UE does not yet know the sequence carried on the OOK ON symbol, the UE can know that the sequences of two OOK ON symbols are the same. Such a structure can be used to improve PSS-based synchronization performance. Alternatively, the sequences of the first X OOK ON symbols of the aforementioned M4 OOK symbols carry PSS information, where X ≥ 1, and the sequences of the other OOK ON symbols carry SSS information. For example, X = 1 or M. The SSS sequence carried on OOK ON can be used as the demodulation reference signal (DMRS) for PBCH. Let PSS / SSS occupy A PRBs, for example, A = 12. Add B guard PRBs on both sides of PSS / SSS, for example, B = 2, to reduce interference from PSS detection. Each of the C PRBs outside the guard PRBs on both sides can carry PBCH, for example, C = 6. To reduce the coding rate of PBCH, PBCH can be carried on A+2B+2C PRBs at the same position in D other OFDM symbols, where D can be equal to 0 or greater than 0. For example, D = 0 in Figure 2N. In this method, by carrying PSS on the OOK ON symbols of four OFDM symbols, the synchronization performance of MR and LR based on PSS is guaranteed. For OOK LR, synchronization is completed using M4 OOK symbols within four OFDM symbols, enhancing synchronization accuracy. In addition, by combining PSS detection in different SSB-U cycles, the synchronization performance can be further improved. This disclosure does not restrict the number of REs occupied by PSS / SSS and the number of PRBs in PBCH to be the same as those in 5G SSB.

[0260] This disclosure also proposes an apparatus for implementing any of the above methods. For example, a terminal is proposed, which includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another network device is proposed, including units or modules for implementing the steps performed by the network device (e.g., access network device, core network functional node, core network device, etc.) in any of the above methods.

[0261] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0262] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be hardware circuits designed for artificial intelligence, which can be understood as ASICs, such as Neural Network Processing Units (NPUs), Tensor Processing Units (TPUs), and Deep Learning Processing Units (DPUs).

[0263] Figure 4 is a schematic diagram of the structure of a communication device according to an embodiment of this disclosure. In some embodiments, the communication device 4100 may be a network device or a terminal. As shown in Figure 4, the communication device 4100 may include a transceiver module 4101.

[0264] In some embodiments, when the communication device is a network device, the transceiver module 4101 is used to transmit PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, and each first symbol is mapped to at least one second symbol, and the modulation scheme of the first symbol and the modulation scheme of the second symbol are different. In some embodiments, the transceiver module 4101 is used to perform at least one of the communication steps such as transmission and / or reception performed by the network device in any of the above methods (e.g., step S3101, but not limited thereto), which will not be described in detail here.

[0265] In some embodiments, the second symbol is either a first-class symbol or a second-class symbol.

[0266] In some embodiments, a pattern consisting of a first class of symbols and a second class of symbols mapped onto at least one first symbol is used to indicate PSS information.

[0267] In some embodiments, the transceiver module 4101 is further configured to transmit auxiliary synchronization signal SSS information on a second time-frequency resource. The second time-frequency resource occupies all first-class symbols mapped on at least one first symbol in the time domain. The time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry the SSS information.

[0268] In some embodiments, at least a portion of the time-frequency sequences on at least one of the first class symbols mapped on at least one first symbol are used to carry PSS information.

[0269] In some embodiments, a portion of the first type of symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module 4101 is also used to transmit auxiliary synchronization signal SSS information on a second time-frequency resource, the second time-frequency resource occupies another portion of the first type of symbols mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first type of symbols occupied by the second time-frequency resource is used to carry SSS information.

[0270] In some embodiments, the time-frequency sequence within all or part of the first class symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module 4101 is also used to transmit SSS information on a third time-frequency resource, the third time-frequency resource occupies at least one first symbol in the time domain, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0271] In some embodiments, the first time-frequency resource occupies a plurality of consecutive first symbols in the time domain.

[0272] In some embodiments, the number of at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

[0273] In some embodiments, the number of resource units occupied by at least one first symbol in the frequency domain is equal to or greater than a second value.

[0274] In some embodiments, the first time-frequency resource occupies a portion of a resource unit within at least one first symbol in the frequency domain.

[0275] In some embodiments, the transceiver module 4101 is further configured to transmit broadcast information on a fourth time-frequency resource, the fourth time-frequency resource occupying at least one first symbol in the time domain.

[0276] In some embodiments, a portion of the first symbols in the first symbols occupied by the fourth time-frequency resource are the same as the first symbols occupied by the first time-frequency resource; or, the first symbols occupied by the fourth time-frequency resource are the same as the first symbols occupied by the first time-frequency resource; or, the first symbols occupied by the fourth time-frequency resource are different from the first symbols occupied by the first time-frequency resource.

[0277] In some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the first time-frequency resource in the frequency domain.

[0278] In some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the third time-frequency resource, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0279] In some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the third time-frequency resource in the frequency domain.

[0280] In some embodiments, PSS information is used for time-frequency synchronization of a first receiver and a second receiver in a terminal. The first receiver is used to receive a wake-up signal, and the wake-up signal is used to wake up the second receiver.

[0281] In some embodiments, the first receiver supports the modulation scheme of the second symbol, and the second receiver supports the modulation scheme of the first symbol.

[0282] In some embodiments, when the communication device is a terminal, the transceiver module 4101 is used to receive PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, and each first symbol is mapped to at least one second symbol, and the modulation scheme of the first symbol and the modulation scheme of the second symbol are different. In some embodiments, the transceiver module 4101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the terminal in any of the above methods (e.g., step S3201, but not limited thereto), which will not be described in detail here.

[0283] In some embodiments, the second symbol is either a first-class symbol or a second-class symbol.

[0284] In some embodiments, a pattern consisting of a first class of symbols and a second class of symbols mapped onto at least one first symbol is used to indicate PSS information.

[0285] In some embodiments, the transceiver module 4101 is further configured to receive auxiliary synchronization signal SSS information on a second time-frequency resource, wherein the second time-frequency resource occupies all first-class symbols mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first-class symbol occupied by the second time-frequency resource is used to carry the SSS information.

[0286] In some embodiments, at least a portion of the time-frequency sequences on at least one of the first class symbols mapped on at least one first symbol are used to carry PSS information.

[0287] In some embodiments, a portion of the first type of symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module 4101 is also used to receive auxiliary synchronization signal SSS information on a second time-frequency resource, the second time-frequency resource occupies another portion of the first type of symbols mapped on at least one first symbol in the time domain, and the time-frequency sequence on the first type of symbols occupied by the second time-frequency resource is used to carry SSS information.

[0288] In some embodiments, the time-frequency sequence within all or part of the first class symbols mapped on at least one first symbol is used to carry PSS information; the transceiver module 4101 is also used to receive SSS information on a third time-frequency resource, the third time-frequency resource occupies at least one first symbol in the time domain, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0289] In some embodiments, the first time-frequency resource occupies a plurality of consecutive first symbols in the time domain.

[0290] In some embodiments, the number of at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

[0291] In some embodiments, the number of resource units occupied by at least one first symbol in the frequency domain is equal to or greater than a second value.

[0292] In some embodiments, the first time-frequency resource occupies a portion of a resource unit within at least one first symbol in the frequency domain.

[0293] In some embodiments, the transceiver module 4101 is further configured to receive broadcast information on a fourth time-frequency resource, the fourth time-frequency resource occupying at least one first symbol in the time domain.

[0294] In some embodiments, a portion of the first symbols in the first symbols occupied by the fourth time-frequency resource are the same as the first symbols occupied by the first time-frequency resource; or, the first symbols occupied by the fourth time-frequency resource are the same as the first symbols occupied by the first time-frequency resource; or, the first symbols occupied by the fourth time-frequency resource are different from the first symbols occupied by the first time-frequency resource.

[0295] In some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the first time-frequency resource in the frequency domain.

[0296] In some embodiments, a portion of the first symbol in the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the third time-frequency resource, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

[0297] In some embodiments, within the same first symbol, there is a guard interval between the resource units occupied by the fourth time-frequency resource in the frequency domain and the resource units occupied by the third time-frequency resource in the frequency domain.

[0298] In some embodiments, the PSS information is used for time-frequency synchronization between a first receiver and a second receiver in a terminal, wherein the first receiver is used to receive a wake-up signal, and the wake-up signal is used to wake up the second receiver.

[0299] In some embodiments, the first receiver supports the modulation scheme of the second symbol, and the second receiver supports the modulation scheme of the first symbol.

[0300] In some embodiments, the transceiver module 4101 described above may include a transmitting module and / or a receiving module. The transmitting module and the receiving module may be separate or integrated together. Optionally, the transceiver module 4101 described above may be interchangeable with a transceiver.

[0301] Figure 5 is a schematic diagram of the structure of a communication device provided according to an embodiment of this disclosure. The communication device 5100 can be a network device, a terminal, or a chip, chip system, or processor that supports the network device in implementing any of the above methods; it can also be a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments, and specific details can be found in the descriptions in the above method embodiments.

[0302] As shown in Figure 5, the communication device 5100 includes one or more processors 5101. The processor 5101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 can be used to execute any of the above methods. Optionally, one or more processors 5101 can be used to invoke instructions to cause the communication device 5100 to execute any of the above methods.

[0303] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S3101, S3201, but not limited thereto), and the processor 5101 performs at least one of other steps (e.g., step S2101, but not limited thereto). In optional embodiments, the transceiver 5102 may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0304] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data. Optionally, all or part of the memories 5103 may be located outside the communication device 5100. In optional embodiments, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuits 5104 are connected to the memories 5103 and can be used to receive data from the memories 5103 or other devices, and to send data to the memories 5103 or other devices. For example, the interface circuits 5104 can read data stored in the memories 5103 and send the data to the processor 5101.

[0305] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 5. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0306] Figure 6 is a schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. For cases where the communication device 5100 can be a chip or a chip system, please refer to the schematic diagram of the chip 6100 shown in Figure 6, but it is not limited thereto.

[0307] Chip 6100 includes one or more processors 6101. Chip 6100 is used to perform any of the above methods.

[0308] In some embodiments, chip 6100 further includes one or more interface circuits 6102. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6100 further includes one or more memories 6103 for storing data. Optionally, all or part of the memories 6103 may be located outside chip 6100. Optionally, interface circuit 6102 is connected to memory 6103, and interface circuit 6102 can be used to receive data from memory 6103 or other devices, and interface circuit 6102 can be used to send data to memory 6103 or other devices. For example, interface circuit 6102 can read data stored in memory 6103 and send the data to processor 6101.

[0309] In some embodiments, the interface circuit 6102 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S3101, S3201, but not limited thereto). For example, the interface circuit 6102 performing the communication steps such as sending and / or receiving in the above-described method means that the interface circuit 6102 performs data interaction between the processor 6101, the chip 6100, the memory 6103, or the transceiver device. In some embodiments, the processor 6101 performs at least one of other steps (e.g., step S2101, but not limited thereto).

[0310] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0311] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 5100, cause the communication device 5100 to perform any of the methods described above. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0312] This disclosure also proposes a program product that, when executed by a communication device 5100, causes the communication device 5100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0313] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0314] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0315] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A communication method, performed by a network device, the method comprising: transmitting PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in a time domain, each first symbol is mapped with at least one second symbol, and a modulation mode of the first symbol is different from a modulation mode of the second symbol.

2. The method of claim 1, wherein, The second symbol is a first type of symbol or a second type of symbol.

3. The method of claim 2, wherein, A pattern composed of the first type of symbol and the second type of symbol mapped on the at least one first symbol is used to indicate the PSS information.

4. The method of claim 3, wherein, The method further comprises: transmitting secondary synchronization signal (SSS) information on a second time-frequency resource, wherein the second time-frequency resource occupies all first type of symbols mapped on the at least one first symbol in the time domain, and a time-frequency sequence on the first type of symbol occupied by the second time-frequency resource is used to carry the SSS information.

5. The method of claim 2 or 3, wherein, A time-frequency sequence on at least part of the first type of symbol mapped on the at least one first symbol is used to carry the PSS information.

6. The method of claim 2 or 3, wherein, A time-frequency sequence on part of the first type of symbol mapped on the at least one first symbol is used to carry the PSS information. The method further comprises: transmitting SSS information on a second time-frequency resource, wherein the second time-frequency resource occupies another part of the first type of symbol mapped on the at least one first symbol in the time domain, and a time-frequency sequence on the first type of symbol occupied by the second time-frequency resource is used to carry the SSS information.

7. The method of claim 2 or 3, wherein, A time-frequency sequence on all or part of the first type of symbol mapped on the at least one first symbol is used to carry the PSS information. The method further comprises: transmitting SSS information on a third time-frequency resource, wherein the third time-frequency resource occupies at least one first symbol in the time domain, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

8. The method according to any one of claims 1 to 7, wherein, The first time-frequency resource occupies a plurality of consecutive first symbols in the time domain.

9. The method according to any one of claims 1 to 8, wherein, A number of the at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

10. The method according to any one of claims 1 to 9, wherein, A number of resource units occupied by the at least one first symbol in the frequency domain is equal to or greater than a second value.

11. The method according to any one of claims 1 to 10, wherein, The first time-frequency resource occupies part of the resource units within the at least one first symbol in the frequency domain.

12. The method according to any one of claims 1 to 11, wherein, The method further comprises: transmitting broadcast information on a fourth time-frequency resource, wherein the fourth time-frequency resource occupies at least one first symbol in the time domain.

13. The method of claim 12, wherein, Part of the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource, or the first symbol occupied by the fourth time-frequency resource is the same as the first symbol occupied by the first time-frequency resource, or the first symbol occupied by the fourth time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

14. The method of claim 13, wherein, Within the same first symbol, a resource unit occupied by the fourth time-frequency resource in the frequency domain has a guard interval with a resource unit occupied by the first time-frequency resource in the frequency domain.

15. The method of claim 12, wherein, The fourth time-frequency resource occupies part of the first symbol, and the part of the first symbol is the same as the first symbol occupied by the third time-frequency resource.

16. The method of claim 15, wherein, In the same first symbol, the resource unit occupied by the fourth time-frequency resource in the frequency domain and the resource unit occupied by the third time-frequency resource in the frequency domain have a guard interval.

17. The method of any one of claims 1 to 16, wherein, The PSS information is used for time-frequency synchronization of a first receiver and a second receiver in the terminal, the first receiver is used for receiving a wake-up signal, and the wake-up signal is used for waking up the second receiver.

18. The method of claim 17, wherein, The first receiver supports a modulation mode of the second symbol, and the second receiver supports a modulation mode of the first symbol.

19. A communication method, performed by a terminal, the method comprising: receiving PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in the time domain, and each first symbol is mapped with at least one second symbol, and the modulation mode of the first symbol is different from the modulation mode of the second symbol.

20. The method of claim 19, wherein, The second symbol is a first type of symbol or a second type of symbol.

21. The method of claim 20, wherein, The pattern composed of the first type of symbol and the second type of symbol mapped on the at least one first symbol is used to indicate the PSS information.

22. The method of claim 21, wherein, The method further comprises: receiving secondary synchronization signal (SSS) information on a second time-frequency resource, wherein the second time-frequency resource occupies all first type of symbols mapped on the at least one first symbol in the time domain, and the time-frequency sequence on the first type of symbol occupied by the second time-frequency resource is used to carry the SSS information.

23. The method of claim 20 or 21, wherein, The time-frequency sequence on at least part of the first type of symbol mapped on the at least one first symbol is used to carry the PSS information.

24. The method of claim 20 or 21, wherein, The time-frequency sequence on part of the first type of symbol mapped on the at least one first symbol is used to carry the PSS information. The method further comprises: receiving SSS information on a second time-frequency resource, wherein the second time-frequency resource occupies another part of the first type of symbol mapped on the at least one first symbol in the time domain, and the time-frequency sequence on the first type of symbol occupied by the second time-frequency resource is used to carry the SSS information.

25. The method of claim 20 or 21, wherein, The time-frequency sequence on all or part of the first type of symbol mapped on the at least one first symbol is used to carry the PSS information. The method further comprises: receiving SSS information on a third time-frequency resource, wherein the third time-frequency resource occupies at least one first symbol in the time domain, and the first symbol occupied by the third time-frequency resource is different from the first symbol occupied by the first time-frequency resource.

26. The method of any one of claims 19 to 25, wherein, The first time-frequency resource occupies a plurality of consecutive first symbols in the time domain.

27. The method of any one of claims 19 to 26, wherein, The number of at least one first symbol occupied by the first time-frequency resource is equal to or greater than a first value.

28. The method of any one of claims 19 to 27, wherein, The number of resource units occupied by the at least one first symbol in the frequency domain is equal to or greater than a second value.

29. The method of any one of claims 19 to 28, wherein, The first time-frequency resource occupies part of the resource unit within the at least one first symbol in the frequency domain.

30. The method of any one of claims 19 to 29, wherein, The method further comprises: receive broadcast information on a fourth time-frequency resource, the fourth time-frequency resource occupying at least one first symbol in time domain.

31. The method of claim 30, wherein, The fourth time-frequency resource occupies part of the first symbols which are the same as the first symbols occupied by the first time-frequency resource; or the fourth time-frequency resource occupies the first symbols which are the same as the first symbols occupied by the first time-frequency resource; or the fourth time-frequency resource occupies the first symbols which are different from the first symbols occupied by the first time-frequency resource.

32. The method of claim 31, wherein, Within the same first symbol, the resource units occupied by the fourth time-frequency resource in frequency domain and the resource units occupied by the first time-frequency resource in frequency domain have a guard interval.

33. The method of claim 30, wherein, The fourth time-frequency resource occupies part of the first symbols which are the same as the first symbols occupied by the third time-frequency resource, and the first symbols occupied by the third time-frequency resource are different from the first symbols occupied by the first time-frequency resource.

34. The method of claim 33, wherein, Within the same first symbol, the resource units occupied by the fourth time-frequency resource in frequency domain and the resource units occupied by the third time-frequency resource in frequency domain have a guard interval.

35. The method of any one of claims 19 to 34, wherein, The PSS information is used for time-frequency synchronization of a first receiver and a second receiver in the terminal, the first receiver is used for receiving a wake-up signal, and the wake-up signal is used for waking up the second receiver.

36. The method of claim 35, wherein, The first receiver supports a modulation mode of the second symbol, and the second receiver supports a modulation mode of the first symbol.

37. A network device, comprising: a transceiver module configured to transmit PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in time domain, and each first symbol is mapped with at least one second symbol, and a modulation mode of the first symbol is different from a modulation mode of the second symbol.

38. A terminal, comprising: a transceiver module configured to receive PSS information on a first time-frequency resource, wherein the first time-frequency resource occupies at least one first symbol in time domain, and each first symbol is mapped with at least one second symbol, and a modulation mode of the first symbol is different from a modulation mode of the second symbol.

39. A communication device, comprising: one or more processors; wherein the communication device is configured to perform the communication method of any of claims 1-36.

40. A communication system, comprising a network device and a terminal; the network device is configured to implement the communication method of any of claims 1-18; and the terminal is configured to implement the communication method of any of claims 19-36.

41. A storage medium, the storage medium storing instructions, when the instructions are executed on a communication device, causing the communication device to perform the communication method of any of claims 1-36.

42. A computer program product, comprising a computer program, when the computer program is executed by a processor, implementing the communication method of any of claims 1-36.

Images