WO2019191898A1

WO2019191898A1 - Method for performing transmission on channel using unlicensed spectrum, and network device and terminal

Info

Publication number: WO2019191898A1
Application number: PCT/CN2018/081744
Authority: WO
Inventors: 唐海
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-04-03
Filing date: 2018-04-03
Publication date: 2019-10-10
Also published as: TW201943289A; CN110741590A; CN110741590B

Abstract

Provided are a method for performing transmission on a channel using an unlicensed spectrum, and a network device and a terminal. In the embodiments of the present invention, a network device sends at least two SSBs to a terminal on a first carrier of a first frequency band, wherein the at least two SSBs comprise a first SSB and a second SSB, and a first subcarrier spacing of the first SSB is different from a second subcarrier spacing of the second SSB. When the SSBs are transmitted on a channel using an unlicensed spectrum, the appropriate subcarrier spacing is adjusted, and a uniform subcarrier spacing is no longer used; therefore, OCB requirements can be satisfied.

Description

Channel transmission method for unlicensed spectrum and network equipment and terminal

Technical field

The present invention relates to data transmission technologies, and in particular, to a channel transmission method for unlicensed spectrum, a network device, and a terminal.

Background technique

In a New Radio (NR) system, such as a 5G application, an unlicensed technique can be employed to communicate using NR technology on the channel of the unlicensed spectrum. In order to avoid sub-band interference on signals transmitted on the channel of the unlicensed spectrum, and also to improve the detection accuracy of the communication device when detecting the channel of the unlicensed spectrum, the signal transmitted on the channel of the unlicensed spectrum is required. The Occupied Channel Bandwidth (OCB) requirement is that the signal transmitted on the channel of the unlicensed spectrum needs to occupy at least a certain proportion of the channel bandwidth. For example, on the channel of the 5 GHz band, the transmitted signal needs to occupy the channel bandwidth. 80%, or, for example, on a channel of the 60 GHz band, the transmitted signal needs to occupy 70% of the channel bandwidth, and so on.

In the NR system, a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) form an SSB (SS/PBCH block), and the SSB is in the SSB. A total of four orthogonal frequency division multiplexing (OFDM) symbols are occupied in the time domain, and a total of 240 subcarriers, that is, 20 physical resource blocks (PRBs) are occupied in the frequency domain.

In the prior art, the SSB may be transmitted by using a pre-configured fixed subcarrier Spacing (SCS) in a specified frequency band, which may fail to meet the OCB requirement. Therefore, it is urgent to provide an unlicensed spectrum channel transmission method. The OCB requirement is met when the SSB is transmitted on the channel of the unlicensed spectrum.

Summary of the invention

Aspects of the present invention provide a channel transmission method for an unlicensed spectrum and a network device and a terminal for satisfying an OCB requirement when transmitting an SSB on a channel of an unlicensed spectrum.

An aspect of the present invention provides a channel transmission method for an unlicensed spectrum, including:

The network device sends at least two SSBs to the terminal on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, and the first subcarrier spacing of the first SSB is The second subcarrier spacing of the second SSB is not the same.

Another aspect of the present invention provides another channel transmission method for an unlicensed spectrum, including:

The terminal receives at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB, and the first subcarrier spacing of the first SSB The second subcarrier spacing is different from the second SSB.

The network device occupies the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB to be transmitted, and the search space of the Type0-PDCCH to be transmitted. Selecting one subcarrier spacing combination from the preconfigured at least one subcarrier spacing combination, the number of physical resource blocks and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB Taking as the subcarrier spacing of the SSB to be transmitted and the subcarrier spacing of the Type0-PDCCH to be transmitted;

The network device sends the SSB and the Type0-PDCCH to the terminal by using a frequency division multiplexing manner on the first carrier.

Receiving, by the terminal, the SSB and the Type0-PDCCH sent by the network device on the first carrier of the first frequency band; the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are the first according to the first frequency band of the network device The bandwidth of a carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the SSB, the number of physical resource blocks occupied by the search space of the Type0-PDCCH, and the Type0- The number of offset physical resource blocks between the search space of the PDCCH and the frequency domain location of the SSB is selected from a pre-configured at least one subcarrier spacing combination.

Another aspect of the present invention provides a network device, including:

a sending unit, configured to send, to the terminal, at least two SSBs on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, and the first sub The carrier spacing is different from the second subcarrier spacing of the second SSB.

In another aspect of the present invention, a terminal is provided, including:

a receiving unit, configured to receive at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, where the first SSB is One subcarrier spacing is different from the second subcarrier spacing of the second SSB.

Another aspect of the present invention provides a network device, including:

a determining unit, configured to use, according to the bandwidth of the first carrier of the first frequency band, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the SSB to be sent, and the search space of the Type0-PDCCH to be sent Selecting one of the pre-configured at least one subcarrier spacing combination by the number of physical resource blocks and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB The carrier spacing is combined to serve as a subcarrier spacing of the SSB to be transmitted and a subcarrier spacing of the Type0-PDCCH to be transmitted;

And a sending unit, configured to send, by using a frequency division multiplexing manner, the SSB and the Type0-PDCCH to the terminal on the first carrier.

In another aspect of the present invention, a terminal is provided, including:

a receiving unit, configured to receive, by the network device, the SSB and the Type0-PDCCH sent on the first carrier of the first frequency band; the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are the network device according to the The bandwidth of the first carrier of the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB, and the number of physical resource blocks occupied by the search space of the Type0-PDCCH The number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB is selected from a pre-configured at least one subcarrier spacing combination.

According to the foregoing technical solution, in one embodiment, the network device sends at least two SSBs to the terminal by using the network device on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB, the first subcarrier spacing of the first SSB and the second subcarrier spacing of the second SSB are different. Since the SSB is transmitted on the channel of the unlicensed spectrum, the appropriate subcarrier spacing is adjusted instead of using Uniform subcarrier spacing to meet OCB requirements.

According to the foregoing technical solution, on the other hand, the embodiment of the present invention receives, by the terminal, at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and a second SSB, the first subcarrier spacing of the first SSB and the second subcarrier spacing of the second SSB are different, because by adjusting the appropriate subcarrier spacing when transmitting the SSB on the channel of the unlicensed spectrum, The uniform subcarrier spacing is adopted to meet the OCB requirements.

According to the foregoing technical solution, on the other hand, the network device according to the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, and the physical resource block occupied by the SSB to be sent by the network device. The number of physical resource blocks occupied by the search space of the Type0-PDCCH to be transmitted and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB, from the advance Selecting one subcarrier spacing combination in the configured at least one subcarrier spacing combination as the subcarrier spacing of the SSB to be transmitted and the subcarrier spacing of the Type0-PDCCH to be transmitted, so that the network device can be in the first carrier The SSB and the Type0-PDCCH are sent to the terminal by using a frequency division multiplexing manner. When the SSB is transmitted on the channel of the unlicensed spectrum, the uniform subcarrier spacing is adjusted, and the unified subcarrier is no longer used. Interval to meet OCB requirements.

According to the foregoing technical solution, on the other hand, the embodiment of the present invention receives, by the terminal, the SSB and the Type0-PDCCH transmitted by the network device on the first carrier of the first frequency band; the subcarrier spacing of the SSB and the Type0-PDCCH The subcarrier spacing is the bandwidth of the first carrier in the first frequency band, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the SSB, and the Type0-PDCCH. Selecting the number of physical resource blocks occupied by the search space and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB, and selecting from at least one pre-configured at least one subcarrier spacing combination Since the SSB is transmitted on the channel of the unlicensed spectrum, the OCB requirement can be satisfied by adjusting the appropriate subcarrier spacing without using a uniform subcarrier spacing.

By adopting the technical solution provided by the invention, when the SSB is transmitted on the channel of the unlicensed spectrum, the OCB requirement can be satisfied, thereby avoiding signal filling.

With the technical solution provided by the present invention, since the subcarrier spacing is increased, the corresponding symbol is shortened, and the SSB can be effectively transmitted within the limited Maximum Channel Occupation Time (MCOT).

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art in light of the inventive workability.

1 is a schematic flowchart of a channel transmission method for an unlicensed spectrum according to an embodiment of the present invention;

2 is a schematic flowchart of another channel transmission method for an unlicensed spectrum according to another embodiment of the present invention;

3 is a schematic flowchart of another channel transmission method for an unlicensed spectrum according to another embodiment of the present invention;

4 is a schematic flowchart diagram of another channel transmission method for an unlicensed spectrum according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a network device according to another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a terminal according to another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another network device according to another embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another terminal according to another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

In the traditional third-generation partner project (3GPP) wireless communication system, for example, Long Term Evolution (LTE) system, data transmission can only occur on the channel of the licensed spectrum (Licensed Spectrum). . However, with the sharp increase in traffic, especially in some urban areas, licensed spectrum may be difficult to meet the demand for traffic. In the 65th meeting of the 3GPP Radio Access Network (RAN), Licensed-Assisted Access (LAA) has been passed, enabling communication using wireless communication technology on the unlicensed spectrum, for example, LAA based on LTE system or LAA based on NR system, and the like.

An unlicensed spectrum is a spectrum of national or regional divisions that can be used for communication of communication equipment. This spectrum is generally considered to be a shared spectrum, that is, a communication device in a different wireless communication system, as long as it meets the regulatory requirements set by the country or region on the spectrum. This spectrum can be used without the need to apply for a proprietary spectrum grant from the government.

In order for various wireless communication systems that use the unlicensed spectrum for wireless communication to coexist friendly in the spectrum, some countries or regions specify regulatory requirements that must be met to use the unlicensed spectrum. For example, in Europe, communication devices follow the "listen-before-talk" (LBT) principle, that is, before the communication device transmits signals on the channel of the unlicensed spectrum, it needs to be on the channel of the unlicensed spectrum. For channel interception, the communication device can perform signal transmission only when the channel listening result is that the channel is idle; if the channel listening result is that the channel is busy, the communication device cannot perform signal transmission.

In order to ensure fairness, in a transmission, the length of time that the communication device uses the channel of the unlicensed spectrum for signal transmission cannot exceed the Maximum Channel Occupation Time (MCOT).

In order to further avoid sub-band interference on signals transmitted on the channel of the unlicensed spectrum, and also to improve the detection accuracy of the communication device when detecting the channel of the unlicensed spectrum, the signal transmitted on the channel of the unlicensed spectrum The Occupied Channel Bandwidth (OCB) requirement is that the signal transmitted on the channel of the unlicensed spectrum needs to occupy at least a certain proportion of the channel bandwidth. For example, on the channel of the 5 GHz band, the transmitted signal needs to occupy the channel bandwidth. 80%, or, for example, on the channel of the 60 GHz band, the transmitted signal needs to occupy 70% of the channel bandwidth, and so on.

FIG. 1 is a schematic flowchart of a channel transmission method for an unlicensed spectrum according to an embodiment of the present invention, as shown in FIG. 1 .

The network device sends at least two SSBs to the terminal on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, and the first subcarrier of the first SSB The interval and the second subcarrier spacing of the second SSB are different.

Optionally, in a possible implementation manner of this embodiment, before 101, the following two steps are further included:

Determining, by the network device, the first subcarrier of the first SSB according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB interval;

Corresponding relationship between the sub-carrier spacing and the frequency band of the first frequency band and the pre-configured SSB according to the first frequency band, for example, Table 1 is the correspondence between the sub-carrier spacing and the frequency band of the SSB in the frequency band below 6 GHz, and Table 2 is The second subcarrier spacing of the second SSB is determined by the correspondence between the subcarrier spacing of the SSB in the frequency band above 6 GHz and the frequency band.

Table 1: Correspondence between subcarrier spacing and frequency band of SSB in the frequency band below 6 GHz

Table 2: Correspondence between subcarrier spacing and frequency band of SSB in bands above 6 GHz

The Global Synchronization Channel Number (GSCN) is used to mark the channel number of the SSB. Each GSCN corresponds to the frequency domain position SSREF of one SSB, and the GSCN is numbered in the frequency domain ascending order.

For example, it is known that the first SSB occupies 20 PRBs in the frequency domain, and the bandwidth of the first carrier is 20 MHz, and the occupied channel bandwidth OCB of the first carrier is required to be D. Then, the network device can determine the first SSB. The first subcarrier spacing is at least 20000*D/(20*12) KHz.

It can be understood that the network device performs the foregoing two steps without a fixed sequence, and may perform, according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the physics occupied by the first SSB. Determining a first subcarrier spacing of the first SSB, and performing a correspondence between the subcarrier spacing and the frequency band according to the first frequency band and the pre-configured SSB, determining the second Step of the second subcarrier spacing of the SSB, or first performing a correspondence between the subcarrier spacing and the frequency band of the first frequency band and the pre-configured SSB, and determining a second subcarrier spacing of the second SSB And determining, according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB, determining the first sub-port of the first SSB The step of the carrier spacing may be further performed according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB. Determining, according to the step of the first subcarrier spacing of the first SSB, performing a second mapping between the subcarrier spacing and the frequency band according to the first frequency band and the pre-configured SSB, and determining the second SSB The step of the subcarrier spacing is not particularly limited in this embodiment.

Optionally, in a possible implementation manner of this embodiment, in 101, the network device may specifically send the foregoing to the terminal in a different time unit on a first carrier of the first frequency band. The first SSB and the second SSB.

The time unit may include, but is not limited to, a time slot, a set of symbols, such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol set, and at least one of the subframes. This embodiment does not specifically limit this. .

Optionally, in a possible implementation manner of this embodiment, in 101, the network device may specifically send the foregoing to the terminal in a different transmission scenario on a first carrier of the first frequency band. The first SSB and the second SSB.

In a specific implementation process, it may be assumed that the first SSB is sent separately; the second SSB is sent simultaneously with downlink data.

Then, the network device may determine, according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB, First subcarrier spacing.

The network device may determine the second subcarrier spacing of the second SSB according to the correspondence between the first frequency band and the subcarrier spacing of the pre-configured SSB and the frequency band.

In this way, the first subcarrier spacing of the first SSB is greater than the second subcarrier spacing of the second SSB.

Optionally, in a possible implementation manner of this embodiment, in the 101, the at least two SSBs sent by the network device may further include a third SSB.

In a specific implementation process, the network device sends at least two SSBs to the terminal on the first carrier of the first frequency band, and the network device may further use the same on the first carrier. In the third SSB frequency division multiplexing mode, the Type0-PDCCH is transmitted to the terminal.

The Type0-Physical Downlink Control Channel (PDCCH) is used to transmit the System Information Block (SIB), which is also called the Remaining Minimum System Information (RMSI) scheduling information, Type0-PDCCH. The subcarrier spacing is the same as the subcarrier spacing of the RMSI.

Further, the network device may further determine the foregoing, before the sending, by the network device, the third SSB and the Type0-PDCCH to the terminal by using a frequency division multiplexing manner. The third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH.

In a specific implementation process, the network device may be specifically configured according to a bandwidth of the first carrier, an occupied channel bandwidth OCB requirement of the first carrier, and a quantity and a physical resource block occupied by the third SSB. The subcarrier spacing of the Type0-PDCCH is determined, and the third subcarrier spacing of the third SSB is determined. The subcarrier spacing of the Type0-PDCCH is the subcarrier spacing of the Type0-PDCCH according to the pre-configured Type0-PDCCH. The correspondence between the frequency bands is as follows when the frequency of the first carrier is less than 6 GHz, corresponding to 15 kHz and 30 kHz; when the frequency of the first carrier is greater than 6 GHz, corresponding to 60 kHz and 120 kHz, etc., is determined.

In another specific implementation process, the network device may be specifically configured to: according to a bandwidth of the first carrier, an occupied channel bandwidth OCB requirement of the first carrier, and a quantity of physical resource blocks occupied by the third SSB, The number of physical resource blocks occupied by the search space of the Type0-PDCCH and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the third SSB,

Selecting one subcarrier spacing combination from the preconfigured at least one subcarrier spacing combination as the third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH.

For example, it is known that the SSB occupies 20 PRBs in the frequency domain, and the search space of the Type0-PDCCH occupies 48 PRBs in the frequency domain, assuming that the bandwidth of the first carrier is 20 MHz, and the occupied channel bandwidth OCB requirement of the first carrier is D, the number of physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the third SSB is 41 PRBs, then the network device can satisfy D≤(20*12* The third subcarrier spacing of the three SSBs + (48 + 41 - 24 - 10) * 12 * Type 0 - PDCCH subcarrier spacing) / 20000 KHz, select one subcarrier spacing combination from the preconfigured at least one subcarrier spacing combination.

For example, the pre-configured at least one subcarrier spacing combination may include, but is not limited to, at least one of the following combinations:

The third subcarrier spacing of the third SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 15 kHz;

The third subcarrier spacing of the third SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 30 kHz;

The third subcarrier spacing of the third SSB is 30 kHz, and the subcarrier spacing of the Type 0-PDCCH is 15 kHz;

The third subcarrier spacing of the third SSB is 30 kHz, and the subcarrier spacing of the RMSI is 30 kHz;

The third subcarrier spacing of the third SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 60 kHz;

The third subcarrier spacing of the third SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz;

The third subcarrier spacing of the third SSB is 30 kHz, and the subcarrier spacing of the Type 0-PDCCH is 60 kHz;

The third subcarrier spacing of the third SSB is 30 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz;

The third subcarrier spacing of the third SSB is 120 kHz, and the subcarrier spacing of the Type 0-PDCCH is 60 kHz;

The third subcarrier spacing of the third SSB is 120 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz;

The third subcarrier spacing of the third SSB is 240 kHz, and the subcarrier spacing of the Type 0-PDCCH is 60 kHz;

The third subcarrier spacing of the third SSB is 240 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz.

In the present invention, the at least one subcarrier spacing combination may be configured by a network device.

Specifically, the network device may send at least one subcarrier spacing combination to the terminal by using Downlink Control Information (DCI), high layer signaling, or system broadcast message.

For example, the high-level signaling may be a radio resource control (RRC) message, and the at least one sub-carrier interval combination may be carried by an information element (IE) in an RRC message, where the RRC message is sent. The RRC message in the prior art, for example, the RRC CONNECTION RECONFIGURATION message, is not limited in this embodiment, and the IE of the existing RRC message is extended to carry the at least one sub- The carrier interval combination, or the RRC message may also be an RRC message different from that existing in the prior art.

Or, for example, the high-level signaling may be a Media Access Control (MAC) Control Element (CE) message, and specifically, the at least one sub-carrier interval may be carried by adding a new MAC CE message. combination.

Alternatively, for example, the existing Master Information Block (MIB) or System Information Block (SIB) in the system broadcast message may be used to carry the at least one subcarrier spacing combination, or A new SIB may be added to carry the at least one subcarrier spacing combination.

It is to be understood that the at least one sub-carrier spacing combination may also be stipulated by a protocol, and may also be partially configured by a network device, and partially stipulated by a protocol, which is not specifically limited in this embodiment.

In this embodiment, the network device sends the at least two SSBs to the terminal on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB, where the first SSB The first subcarrier spacing is different from the second subcarrier spacing of the second SSB. Since the SSB is transmitted on the channel of the unlicensed spectrum, the uniform subcarrier spacing is adjusted, and the uniform subcarrier spacing is no longer used. OCB requirements.

FIG. 2 is a schematic flowchart of another method for channel transmission of an unlicensed spectrum according to another embodiment of the present invention, as shown in FIG. 2 .

201. The terminal receives at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, and the first child of the first SSB The carrier spacing is different from the second subcarrier spacing of the second SSB.

Optionally, in a possible implementation manner of this embodiment, before 201, the network device may further determine a first subcarrier spacing of the first SSB and a second subcarrier spacing of the second SSB.

For example, the network device may determine the first SSB according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB. First subcarrier spacing.

Or, for example, the network device may be specifically configured according to the corresponding relationship between the first frequency band and the subcarrier spacing of the pre-configured SSB and the frequency band. For example, Table 1 is between the subcarrier spacing and the frequency band of the SSB in the frequency band below 6 GHz. Corresponding relationship, Table 2 is the correspondence between the subcarrier spacing of the SSB in the frequency band above 6 GHz and the frequency band, etc., and determines the second subcarrier spacing of the second SSB.

It can be understood that the network device performs the foregoing two steps without a fixed sequence, and may perform, according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the physics occupied by the first SSB. Determining a first subcarrier spacing of the first SSB, and performing a correspondence between the subcarrier spacing and the frequency band according to the first frequency band and the pre-configured SSB, determining the second Step of the second subcarrier spacing of the SSB, or first performing a correspondence between the subcarrier spacing and the frequency band of the first frequency band and the pre-configured SSB, and determining a second subcarrier spacing of the second SSB And determining, according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB, determining the first sub-port of the first SSB The step of the carrier spacing may be further performed according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB. Determining, according to the step of the first subcarrier spacing of the first SSB, performing a correspondence between the subcarrier spacing and the frequency band of the first frequency band and the pre-configured SSB, and determining the second sub of the second SSB The step of the carrier spacing is not particularly limited in this embodiment.

Optionally, in a possible implementation manner of this embodiment, in 201, the terminal may specifically receive, by using, the network device, on a first carrier of a first frequency band, in a different time unit, The first SSB and the second SSB are described.

Optionally, in a possible implementation manner of this embodiment, in 201, the terminal may specifically receive, by using, the network device, on a first carrier in a first frequency band, in a different transmission scenario. The first SSB and the second SSB are described.

Optionally, in a possible implementation manner of this embodiment, in the 201, the at least two SSBs received by the terminal may further include a third SSB.

In a specific implementation process, the terminal receives the network device in the first carrier of the first frequency band, and sends the at least two SSBs at the same time, and the terminal may further receive the network device adoption and the third SSB. Type0-PDCCH transmitted in frequency division multiplexing mode.

For example, the third subcarrier spacing of the third SSB may be specifically determined by the network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the physical occupied by the third SSB. The number of resource blocks and the subcarrier spacing of the Type0-PDCCH are determined; wherein the subcarrier spacing of the Type0-PDCCH is a correspondence between the subcarrier spacing of the Type0-PDCCH and the frequency band according to the preconfigured Type0-PDCCH. The relationship is as follows when the frequency of the first carrier is less than 6 GHz, corresponding to 15 kHz and 30 kHz; when the frequency of the first carrier is greater than 6 GHz, corresponding to 60 kHz and 120 kHz, etc., is determined.

Or, for example, the third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH may be specifically the bandwidth of the first carrier by the network device according to the bandwidth of the first carrier. The bandwidth OCB requirement, the number of physical resource blocks occupied by the third SSB, the number of physical resource blocks occupied by the search space of the Type0-PDCCH, and the search space of the Type0-PDCCH and the third SSB The number of offset physical resource blocks between frequency domain locations is selected from a pre-configured at least one subcarrier spacing combination.

Specifically, the terminal may specifically receive at least one subcarrier spacing combination sent by the network device by using Downlink Control Information (DCI), high layer signaling, or system broadcast message.

In this embodiment, the terminal receives the at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB, where the first SSB The first subcarrier spacing is different from the second subcarrier spacing of the second SSB. Since the SSB is transmitted on the channel of the unlicensed spectrum, by adjusting the appropriate subcarrier spacing, the uniform subcarrier spacing is no longer used. Meet OCB requirements.

FIG. 3 is a schematic flowchart of another method for channel transmission of an unlicensed spectrum according to another embodiment of the present invention, as shown in FIG. 3.

301. The network device according to the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB to be sent, and the search space of the Type0-PDCCH to be sent. Selecting one subcarrier from the preconfigured at least one subcarrier spacing combination, the number of physical resource blocks and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB The interval is combined to serve as a subcarrier spacing of the SSB to be transmitted and a subcarrier spacing of the Type0-PDCCH to be transmitted.

302. The network device sends the SSB and the Type0-PDCCH to the terminal by using a frequency division multiplexing manner on the first carrier.

For example, it is known that the SSB occupies 20 PRBs in the frequency domain, and the search space of the Type0-PDCCH occupies 48 PRBs in the frequency domain, assuming that the bandwidth of the first carrier is 20 MHz, and the occupied channel bandwidth OCB requirement of the first carrier is D, the number of physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB is 41 PRBs, then the network device can satisfy the D≤(20*12*SSB sub- Carrier spacing + (48 + 41 - 24 - 10) * 12 * Type 0 - subcarrier spacing of the PDCCH) / 20000 KHz, one subcarrier spacing combination is selected from the preconfigured at least one subcarrier spacing combination.

The subcarrier spacing of the SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 15 kHz;

The subcarrier spacing of the SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 30 kHz;

The subcarrier spacing of the SSB is 30 kHz, and the subcarrier spacing of the Type 0-PDCCH is 15 kHz;

The subcarrier spacing of the SSB is 30 kHz, and the subcarrier spacing of the RMSI is 30 kHz;

The subcarrier spacing of the SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 60 kHz;

The subcarrier spacing of the SSB is 15 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz;

The subcarrier spacing of the SSB is 30 kHz, and the subcarrier spacing of the Type0-PDCCH is 60 kHz;

The subcarrier spacing of the SSB is 30 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz;

The subcarrier spacing of the SSB is 120 kHz, and the subcarrier spacing of the Type0-PDCCH is 60 kHz;

The subcarrier spacing of the SSB is 120 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz;

The subcarrier spacing of the SSB is 240 kHz, and the subcarrier spacing of the Type 0-PDCCH is 60 kHz;

The subcarrier spacing of the SSB is 240 kHz, and the subcarrier spacing of the Type 0-PDCCH is 120 kHz.

In this embodiment, the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB to be sent, and the Type0-PDCCH to be transmitted by the network device The number of physical resource blocks occupied by the search space and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB, from a pre-configured at least one subcarrier spacing combination Selecting a subcarrier spacing combination to serve as a subcarrier spacing of the SSB to be transmitted and a subcarrier spacing of the Type0-PDCCH to be transmitted, so that the network device can adopt a frequency division multiplexing manner on the first carrier. The SSB and the Type0-PDCCH are sent to the terminal. When the SSB is transmitted on the channel of the unlicensed spectrum, the OCB requirement can be met by adjusting the appropriate subcarrier spacing without using a uniform subcarrier spacing.

FIG. 4 is a schematic flowchart of another method for channel transmission of an unlicensed spectrum according to another embodiment of the present invention, as shown in FIG. 4 .

401. The terminal receives the SSB and the Type0-PDCCH sent by the network device on the first carrier of the first frequency band, and the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are the first frequency band of the network device. The bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the SSB, the number of physical resource blocks occupied by the search space of the Type0-PDCCH, and the The number of offset physical resource blocks between the search space of Type0-PDCCH and the frequency domain location of the SSB is selected from a pre-configured at least one subcarrier spacing combination.

In this embodiment, the terminal receives the SSB and the Type0-PDCCH that are sent by the network device on the first carrier of the first frequency band, and the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are the network device. The bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB, and the physical resource block occupied by the search space of the Type0-PDCCH The number and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB are selected from a pre-configured at least one subcarrier spacing combination due to the channel on the unlicensed spectrum When transmitting the SSB, the OCB requirement can be met by adjusting the appropriate subcarrier spacing instead of using a uniform subcarrier spacing.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

FIG. 5 is a schematic structural diagram of a network device according to another embodiment of the present invention, as shown in FIG. 5. The network device of this embodiment may include a sending unit 51, configured to send, by using the first carrier of the first frequency band, at least two SSBs to the terminal, where the at least two SSBs include the first SSB and the second SSB. The first subcarrier spacing of the first SSB and the second subcarrier spacing of the second SSB are different.

Optionally, in a possible implementation manner of this embodiment, the method further includes: determining, according to the bandwidth of the first carrier, an occupied channel bandwidth OCB requirement of the first carrier, and the first SSB. Determining, by the number of physical resource blocks, a first subcarrier spacing of the first SSB; and determining, according to the correspondence between the first frequency band and a pre-configured subcarrier spacing of the SSB and the frequency band, determining the second SSB Second subcarrier spacing.

Optionally, in a possible implementation manner of the embodiment, the sending unit 51 may be specifically configured to send, to the terminal, the different carriers in the first carrier of the first frequency band. And the first SSB and the second SSB; or the first SSB and the second SSB are sent to the terminal in different transmission scenarios on a first carrier of the first frequency band.

The sending unit 51 may be configured to determine, according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB, a first subcarrier spacing of the first SSB; and determining a second subcarrier spacing of the second SSB according to a correspondence between the first frequency band and a pre-configured subcarrier spacing of the SSB and the frequency band.

Optionally, in a possible implementation manner of the embodiment, the at least two SSBs sent by the sending unit 51 may further include a third SSB.

Further, the sending unit 51 may be further configured to send the Type0-PDCCH to the terminal by using the third SSB frequency division multiplexing manner on the first carrier.

Further, the sending unit 51 may be further configured to: according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the third SSB, and The subcarrier spacing of the Type0-PDCCH is determined, and the third subcarrier spacing of the third SSB is determined. The subcarrier spacing of the Type0-PDCCH is the subcarrier spacing of the Type0-PDCCH according to the pre-configured Type0-PDCCH. Corresponding relationship between the frequency bands, or according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the third SSB, and the Type0-PDCCH The number of physical resource blocks occupied by the search space and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the third SSB, from the pre-configured at least one subcarrier spacing One subcarrier spacing combination is selected in the combination to serve as a third subcarrier spacing of the third SSB and a subcarrier spacing of the Type0-PDCCH.

In the present invention, the at least one subcarrier spacing combination may be configured by a network device, or may be stipulated by a protocol, or may be partially configured by a network device, and partially stipulated by a protocol, which is not specifically limited in this embodiment.

It should be noted that the method performed by the network device in the embodiment corresponding to FIG. 1 can be implemented by the network device device provided in this embodiment. For details, refer to related content in the embodiment corresponding to FIG. 1, and details are not described herein again.

In this embodiment, the sending unit sends at least two SSBs to the terminal on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB, where the first SSB The first subcarrier spacing is different from the second subcarrier spacing of the second SSB. Since the SSB is transmitted on the channel of the unlicensed spectrum, the uniform subcarrier spacing is adjusted, and the uniform subcarrier spacing is no longer used. OCB requirements.

FIG. 6 is a schematic structural diagram of a terminal according to another embodiment of the present invention, as shown in FIG. 6. The terminal in this embodiment may include a receiving unit 61, configured to receive at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB. The first subcarrier spacing of the first SSB and the second subcarrier spacing of the second SSB are different.

Optionally, in a possible implementation manner of the embodiment, the receiving unit 61 may be configured to receive, by using, the network device, in a different time unit, on a first carrier of the first frequency band. And the first SSB and the second SSB; or the first SSB and the second SSB that are sent by the network device on a first carrier of the first frequency band in different transmission scenarios.

Optionally, in a possible implementation manner of the embodiment, the at least two SSBs received by the receiving unit 61 may further include a third SSB.

Further, the receiving unit 61 may be further configured to receive the Type0-PDCCH that is sent by the network device by using the third SSB frequency division multiplexing manner;

The third subcarrier spacing of the third SSB is determined by the network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the third SSB. And determining, by the subcarrier spacing of the Type0-PDCCH, where the subcarrier spacing of the Type0-PDCCH is determined by the network device according to a correspondence between a subcarrier spacing of the Type0-PDCCH and a frequency band configured in advance; or

The third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH are the network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the The number of physical resource blocks occupied by the three SSBs, the number of physical resource blocks occupied by the search space of the Type0-PDCCH, and the offset between the search space of the Type0-PDCCH and the frequency domain position of the third SSB The number of shifted physical resource blocks is selected from a pre-configured combination of at least one subcarrier spacing.

It should be noted that the method performed by the terminal in the embodiment corresponding to FIG. 2 can be implemented by the terminal device provided in this embodiment. For details, refer to related content in the embodiment corresponding to FIG. 2, and details are not described herein again.

In this embodiment, the receiving unit receives at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB, where the first The first subcarrier spacing of the SSB is different from the second subcarrier spacing of the second SSB. Since the SSB is transmitted on the channel of the unlicensed spectrum, the uniform subcarrier spacing is not adjusted, and the uniform subcarrier spacing is no longer used. Can meet OCB requirements.

FIG. 7 is a schematic structural diagram of another network device according to another embodiment of the present invention, as shown in FIG. 7. The network device of this embodiment may include a determining unit 71 and a transmitting unit 72. The determining unit 71 is configured to: according to the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB to be sent, and the Type0-PDCCH to be sent. The number of physical resource blocks occupied by the search space and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB, from a pre-configured at least one subcarrier spacing combination Selecting a subcarrier spacing combination to serve as a subcarrier spacing of the SSB to be transmitted and a subcarrier spacing of the Type0-PDCCH to be transmitted. The transmitting unit 72 is configured to adopt a frequency division multiplexing manner on the first carrier. Transmitting the SSB and the Type0-PDCCH to a terminal.

It should be noted that the method performed by the network device in the embodiment corresponding to FIG. 3 can be implemented by the network device device provided in this embodiment. For details, refer to related content in the embodiment corresponding to FIG. 3, and details are not described herein again.

In this embodiment, the determining unit is configured according to the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB to be sent, and the Type0-PDCCH to be sent. The number of physical resource blocks occupied by the search space and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB, from a pre-configured at least one subcarrier spacing combination Selecting a subcarrier spacing combination to serve as a subcarrier spacing of the SSB to be transmitted and a subcarrier spacing of the Type0-PDCCH to be transmitted, so that the transmitting unit can use the frequency division multiplexing manner to the terminal on the first carrier. The SSB and the Type0-PDCCH are transmitted. Since the SSB is transmitted on the channel of the unlicensed spectrum, the OCB requirement can be met by adjusting the appropriate subcarrier spacing without using a uniform subcarrier spacing.

FIG. 8 is a schematic structural diagram of another terminal according to another embodiment of the present invention, as shown in FIG. 8. The terminal in this embodiment may include a receiving unit 81, configured to receive, by using the SSB and the Type0-PDCCH, the SSB and the Type0-PDCCH sent by the network device on the first carrier of the first frequency band, and the subcarrier spacing of the SSB and the subcarrier of the Type0-PDCCH The interval is the bandwidth of the first carrier in the first frequency band, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the SSB, and the search space of the Type0-PDCCH. The number of physical resource blocks occupied and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB are selected from a pre-configured at least one subcarrier spacing combination.

It should be noted that the method performed by the terminal in the embodiment corresponding to FIG. 4 can be implemented by the terminal device provided in this embodiment. For details, refer to related content in the embodiment corresponding to FIG. 4, and details are not described herein again.

In this embodiment, the receiving unit receives the SSB and the Type0-PDCCH that are sent by the network device on the first carrier of the first frequency band, and the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are the network. The physical resource block occupied by the device according to the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB, and the search space of the Type0-PDCCH The number of offset physical resource blocks between the number of search spaces of the Type0-PDCCH and the frequency domain location of the SSB, selected from a pre-configured at least one subcarrier spacing combination due to the channel in the unlicensed spectrum When transmitting the SSB, the OCB requirement can be met by adjusting the appropriate subcarrier spacing instead of using a uniform subcarrier spacing.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present invention, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that The technical solutions described in the foregoing embodiments are modified, or the equivalents of the technical features are replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A channel transmission method for an unlicensed spectrum, comprising:

The network device sends at least two SSBs to the terminal on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, and the first subcarrier spacing of the first SSB is The second subcarrier spacing of the second SSB is not the same.
The method according to claim 1, wherein the network device, before transmitting the at least two SSBs to the terminal on the first carrier of the first frequency band, further includes:

Determining, by the network device, the first subcarrier of the first SSB according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB interval;

Determining, by the network device, a second subcarrier spacing of the second SSB according to a correspondence between the first frequency band and a pre-configured subcarrier spacing of the SSB and a frequency band.
The method according to claim 1, wherein the network device sends at least two SSBs to the terminal on the first carrier of the first frequency band, including:

Transmitting, by the network device, the first SSB and the second SSB to the terminal in different time units on a first carrier of the first frequency band; or

The network device sends the first SSB and the second SSB to the terminal in a different transmission scenario on a first carrier of the first frequency band.
The method of claim 3, wherein the time unit comprises at least one of a time slot, a set of symbols, and a subframe.
The method according to claim 3, wherein the first SSB is separately transmitted; the second SSB is sent simultaneously with downlink data; and the first subcarrier spacing of the first SSB is greater than the second The second subcarrier spacing of the SSB.
The method according to any one of claims 1 to 5, wherein the at least two SSBs further include a third SSB, and the network device sends at least the first carrier on the first frequency band to the terminal. At the same time, the two SSBs also include:

The network device sends a Type0-PDCCH to the terminal in the frequency division multiplexing manner with the third SSB on the first carrier, where the network device uses a frequency on the first carrier. Before the third SSB and the Type 0-PDCCH are sent to the terminal, the method further includes:

Determining, by the network device, the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the third SSB, and the subcarrier spacing of the Type0-PDCCH a third subcarrier spacing of the third SSB, where the subcarrier spacing of the Type0-PDCCH is determined by the network device according to a correspondence between a subcarrier spacing of the Type0-PDCCH and a frequency band configured in advance; or

The network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the third SSB, and the search space of the Type0-PDCCH Selecting one subcarrier from the preconfigured at least one subcarrier spacing combination, the number of physical resource blocks and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the third SSB The interval is combined to serve as a third subcarrier spacing of the third SSB and a subcarrier spacing of the Type0-PDCCH.
The method of claim 6 wherein said at least one subcarrier spacing combination is configured by said network device or by a protocol.
A channel transmission method for an unlicensed spectrum, comprising:

The terminal receives at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include the first SSB and the second SSB, and the first subcarrier spacing of the first SSB The second subcarrier spacing is different from the second SSB.
The method according to claim 8, wherein the terminal receives at least two SSBs that are sent by the network device on the first carrier of the first frequency band, and includes:

Receiving, by the terminal, the first SSB and the second SSB sent by the network device on a first carrier of a first frequency band, in different time units; or

The terminal receives the first SSB and the second SSB that are sent by the network device on the first carrier of the first frequency band in different transmission scenarios.
The method of claim 9, wherein the time unit comprises at least one of a time slot, a set of symbols, and a subframe.
The method according to claim 9 or 10, wherein the first SSB is separately received, the second SSB is received simultaneously with downlink data, and the first subcarrier spacing of the first SSB is greater than the second The second subcarrier spacing of the SSB.
The method according to any one of claims 8 to 11, wherein the at least two SSBs further include a third SSB; the terminal receives the network device on the first carrier of the first frequency band, and sends the At least two SSBs simultaneously include:

The terminal receives the Type0-PDCCH that is sent by the network device by using the third SSB frequency division multiplexing manner;

The third subcarrier spacing of the third SSB is determined by the network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the third SSB. And determining, by the subcarrier spacing of the Type0-PDCCH, where the subcarrier spacing of the Type0-PDCCH is determined by the network device according to a correspondence between a subcarrier spacing of the Type0-PDCCH and a frequency band configured in advance; or

The third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH are the network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the The number of physical resource blocks occupied by the three SSBs, the number of physical resource blocks occupied by the search space of the Type0-PDCCH, and the offset between the search space of the Type0-PDCCH and the frequency domain position of the third SSB The number of shifted physical resource blocks is selected from a pre-configured combination of at least one subcarrier spacing.
The method of claim 12 wherein the at least one subcarrier spacing combination is configured by the network device or by a protocol.
A channel transmission method for an unlicensed spectrum, comprising:

The network device occupies the bandwidth of the first carrier in the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB to be transmitted, and the search space of the Type0-PDCCH to be transmitted. Selecting one subcarrier spacing combination from the preconfigured at least one subcarrier spacing combination, the number of physical resource blocks and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB Taking as the subcarrier spacing of the SSB to be transmitted and the subcarrier spacing of the Type0-PDCCH to be transmitted;

The network device sends the SSB and the Type0-PDCCH to the terminal by using a frequency division multiplexing manner on the first carrier.
The method of claim 14, wherein the at least one subcarrier spacing combination is configured by the network device or by a protocol.
A channel transmission method for an unlicensed spectrum, comprising:

Receiving, by the terminal, the SSB and the Type0-PDCCH sent by the network device on the first carrier of the first frequency band; the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are the first according to the first frequency band of the network device The bandwidth of a carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the SSB, the number of physical resource blocks occupied by the search space of the Type0-PDCCH, and the Type0- The number of offset physical resource blocks between the search space of the PDCCH and the frequency domain location of the SSB is selected from a pre-configured at least one subcarrier spacing combination.
The method of claim 16 wherein said at least one subcarrier spacing combination is configured by said network device or by a protocol.
A network device, comprising:

a sending unit, configured to send, to the terminal, at least two SSBs on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, and the first sub The carrier spacing is different from the second subcarrier spacing of the second SSB.
The network device according to claim 18, wherein the sending unit is further configured to:

Determining, according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the first SSB, a first subcarrier spacing of the first SSB;

Determining a second subcarrier spacing of the second SSB according to a correspondence between the first frequency band and a pre-configured subcarrier spacing of the SSB and a frequency band.
The network device according to claim 18, wherein the sending unit is specifically configured to:

Transmitting, by the first carrier of the first frequency band, the first SSB and the second SSB to the terminal in different time units; or

And transmitting, on the first carrier of the first frequency band, the first SSB and the second SSB to the terminal in different transmission scenarios.
The network device according to claim 20, wherein the time unit comprises at least one of a time slot, a symbol set, and a subframe.
The network device according to claim 20, wherein the first SSB is separately transmitted; the second SSB is sent simultaneously with downlink data; and the first subcarrier spacing of the first SSB is greater than the first The second subcarrier spacing of the two SSBs.
The network device according to any one of claims 18 to 22, wherein the at least two SSBs further include a third SSB, and the sending unit is further configured to:

Transmitting a Type0-PDCCH to the terminal by using the third SSB frequency division multiplexing manner on the first carrier;

The sending unit is also used for

Determining the third according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the third SSB, and the subcarrier spacing of the Type0-PDCCH a third subcarrier spacing of the SSB, where the subcarrier spacing of the Type0-PDCCH is determined by the network device according to a correspondence between a subcarrier spacing of the Type0-PDCCH and a frequency band configured in advance; or

According to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the third SSB, and the physical resource block occupied by the search space of the Type0-PDCCH And a quantity and an offset physical resource block between the search space of the Type0-PDCCH and the frequency domain location of the third SSB, and selecting one subcarrier spacing combination from the preconfigured at least one subcarrier spacing combination to And a third subcarrier spacing of the third SSB and a subcarrier spacing of the Type0-PDCCH.
The network device of claim 23, wherein the at least one subcarrier spacing combination is configured by the network device or by a protocol.
A terminal, comprising:

a receiving unit, configured to receive at least two SSBs that are sent by the network device on the first carrier of the first frequency band, where the at least two SSBs include a first SSB and a second SSB, where the first SSB is One subcarrier spacing is different from the second subcarrier spacing of the second SSB.
The terminal according to claim 25, wherein the receiving unit is specifically configured to

Receiving, by the network device, on the first carrier of the first frequency band, sending the first SSB and the second SSB in different time units; or

Receiving, by the network device, on the first carrier of the first frequency band, in the different transmission scenarios, sending the first SSB and the second SSB.
The terminal according to claim 26, wherein the time unit comprises at least one of a time slot, a symbol set, and a subframe.
The terminal according to claim 26 or 27, wherein the first SSB is separately received, the second SSB is received simultaneously with downlink data, and the first subcarrier spacing of the first SSB is greater than the second The second subcarrier spacing of the SSB.
The terminal according to any one of claims 25 to 28, wherein the at least two SSBs further include a third SSB; the receiving unit is further configured to:

Receiving, by the network device, a Type0-PDCCH transmitted by using the third SSB frequency division multiplexing manner;

The third subcarrier spacing of the third SSB is determined by the network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the number of physical resource blocks occupied by the third SSB. And determining, by the subcarrier spacing of the Type0-PDCCH, where the subcarrier spacing of the Type0-PDCCH is determined by the network device according to a correspondence between a subcarrier spacing of the Type0-PDCCH and a frequency band configured in advance; or

The third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH are the network device according to the bandwidth of the first carrier, the occupied channel bandwidth OCB requirement of the first carrier, and the The number of physical resource blocks occupied by the three SSBs, the number of physical resource blocks occupied by the search space of the Type0-PDCCH, and the offset between the search space of the Type0-PDCCH and the frequency domain position of the third SSB The number of shifted physical resource blocks is selected from a pre-configured combination of at least one subcarrier spacing.
The terminal of claim 29, wherein the at least one subcarrier spacing combination is configured by the network device or by a protocol.
A network device, comprising:

a determining unit, configured to use, according to the bandwidth of the first carrier of the first frequency band, the occupied channel bandwidth OCB requirement of the first carrier, the number of physical resource blocks occupied by the SSB to be sent, and the search space of the Type0-PDCCH to be sent Selecting one of the pre-configured at least one subcarrier spacing combination by the number of physical resource blocks and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB The carrier spacing is combined to serve as a subcarrier spacing of the SSB to be transmitted and a subcarrier spacing of the Type0-PDCCH to be transmitted;

And a sending unit, configured to send, by using a frequency division multiplexing manner, the SSB and the Type0-PDCCH to the terminal on the first carrier.
The network device of claim 31, wherein the at least one subcarrier spacing combination is configured by the network device or by a protocol.
A terminal, comprising:

a receiving unit, configured to receive, by the network device, the SSB and the Type0-PDCCH sent on the first carrier of the first frequency band; the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are the network device according to the The bandwidth of the first carrier of the first frequency band, the OCB requirement of the occupied channel bandwidth of the first carrier, the number of physical resource blocks occupied by the SSB, and the number of physical resource blocks occupied by the search space of the Type0-PDCCH The number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the SSB is selected from a pre-configured at least one subcarrier spacing combination.
The terminal according to claim 33, wherein said at least one subcarrier spacing combination is configured by said network device or by a protocol.