CN110741590A

CN110741590A - Channel transmission method of unlicensed spectrum, network device and terminal

Info

Publication number: CN110741590A
Application number: CN201880037166.7A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-04-03
Filing date: 2018-04-03
Publication date: 2020-01-31
Anticipated expiration: 2038-04-03
Also published as: TW201943289A; CN110741590B; WO2019191898A1

Abstract

, the embodiment of the invention sends at least two SSBs to a terminal through a network device on a th carrier of a th frequency band, wherein the at least two SSBs include a th SSB and a second SSB, a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB, and the OCB requirement can be satisfied by adjusting a proper subcarrier interval without adopting a subcarrier interval of a system when the SSB is transmitted on the channel of the unlicensed spectrum.

Description

Channel transmission method of unlicensed spectrum, network device and terminal

Technical Field

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

Background

In order to avoid sub-band interference to signals transmitted on the Channel of the unlicensed spectrum, and to improve the detection accuracy of the communication device in detecting the Channel of the unlicensed spectrum, signals transmitted on the Channel of the unlicensed spectrum need to satisfy an Occupied Channel Bandwidth (OCB) requirement that signals transmitted on the Channel of the unlicensed spectrum need to occupy at least proportions of the Channel Bandwidth, for example, 80% of the Channel Bandwidth on a Channel of a 5GHz band, or 70% of the Channel Bandwidth on a Channel of a 60GHz band, for example.

In the NR system, a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) together form SSBs (SS/PBCH Block), and the SSBs occupy 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the time domain and 240 subcarriers, that is, 20 Physical Resource Blocks (PRBs) in the Frequency domain.

In the prior art, in a designated frequency band, a preconfigured fixed Subcarrier Spacing (SCS) transmission SSB may not meet the OCB requirement, and therefore, it is needed to provide channel transmission methods of the unlicensed spectrum to meet the OCB requirement when transmitting the SSB on the channel of the unlicensed spectrum.

Disclosure of Invention

Aspects of the present invention provide a method, a network device, and a terminal for transmitting a channel of an unlicensed spectrum, which are used to meet OCB requirements when transmitting an SSB on the channel of the unlicensed spectrum.

In aspect of the present invention, unlicensed spectrum channel transmission methods are provided, including:

the network equipment sends at least two SSBs to a terminal on a carrier of a frequency band, wherein the at least two SSBs comprise a SSB and a second SSB, and a th subcarrier interval of the SSB is different from a second subcarrier interval of the second SSB.

In another aspect of the present invention, another unlicensed spectrum channel transmission methods are provided, including:

the terminal receives at least two SSBs sent by the network equipment on a carrier of a th frequency band, wherein the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.

the network equipment selects subcarrier interval combinations from at least preconfigured subcarrier interval combinations according to the bandwidth of a carrier of an frequency band, the OCB requirement of the carrier on the occupied channel bandwidth, the number of physical resource blocks occupied by SSB to be sent, the number of physical resource blocks occupied by a Type0-PDCCH to be sent, and the number of offset physical resource blocks between the Type0-PDCCH search space and the frequency domain position of the SSB, so as to serve as the subcarrier intervals of the SSB to be sent and the subcarrier intervals of the Type0-PDCCH to be sent;

and the network equipment transmits the SSB and the Type0-PDCCH to a terminal in a frequency division multiplexing mode on the th carrier.

and the terminal receives SSB and Type0-PDCCH sent by the network equipment on the carrier wave of the frequency band, wherein the subcarrier interval of the SSB and the subcarrier interval of the Type0-PDCCH are selected from at least preconfigured subcarrier interval combinations by the network equipment according to the bandwidth of the carrier wave of the frequency band, the OCB requirement of the occupied channel bandwidth of the carrier wave, 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the SSB.

In another aspect of the invention, there is provided network devices, comprising:

a sending unit, configured to send at least two SSBs to a terminal on a th carrier in an th frequency band, where the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.

In another aspect of the present invention, there are provided terminals, including:

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

a determining unit, configured to select subcarrier interval combinations from at least preconfigured subcarrier interval combinations according to a bandwidth of a th carrier of an th frequency band, an occupied channel bandwidth OCB requirement of the th carrier, a number of physical resource blocks occupied by an SSB to be sent, a number of physical resource blocks occupied by a search space of a Type0-PDCCH to be sent, and a number of offset physical resource blocks between the search space of the Type0-PDCCH and a frequency domain position of the SSB, where the selected subcarrier interval combinations are used as subcarrier intervals of the SSB to be sent and subcarrier intervals of the Type0-PDCCH to be sent;

a sending unit, configured to send the SSB and the Type0-PDCCH to a terminal in a frequency division multiplexing manner on the th carrier.

a receiving unit, configured to receive an SSB and a Type0-PDCCH sent by a network device on a th carrier of a th frequency band, where a subcarrier interval of the SSB and a subcarrier interval of the Type0-PDCCH are selected from a preconfigured combination of at least subcarrier intervals by the network device according to a bandwidth of a th carrier of the th frequency band, an occupied channel bandwidth OCB requirement of the th carrier, a number of physical resource blocks occupied by the SSB, a number of physical resource blocks occupied by a search space of the Type0-PDCCH, and a number of offset physical resource blocks between the search space of the Type0-PDCCH and a frequency domain position of the SSB.

It can be known from the foregoing technical solution that in , in the embodiment of the present invention, network equipment sends at least two SSBs to a terminal on a th carrier in a th frequency band, where the at least two SSBs include a th SSB and a second SSB, a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB, and as the SSBs are transmitted on a channel without a licensed spectrum, an OCB requirement can be satisfied by adjusting an appropriate subcarrier interval without using a subcarrier interval of a system .

It can be known from the foregoing technical solution that in another aspect, in the embodiment of the present invention, a terminal receives at least two SSBs sent by a network device on a th carrier in a th frequency band, where the at least two SSBs include a th SSB and a second SSB, a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB, and as the SSBs are transmitted on a channel without a licensed spectrum, an OCB requirement can be satisfied by adjusting an appropriate subcarrier interval without using a subcarrier interval of a system .

As can be seen from the foregoing technical solution, in another aspect, in the embodiment of the present invention, according to a bandwidth of a th carrier of a th frequency band, a requirement of an occupied channel bandwidth OCB of the th carrier, a number of physical resource blocks occupied by an SSB to be transmitted, a number of physical resource blocks occupied by a Type0-PDCCH to be transmitted, and a number of offset physical resource blocks between a search space of the Type0-PDCCH and a frequency domain position of the SSB, a subcarrier interval combination is selected from at least subcarrier interval combinations configured in advance to serve as a subcarrier interval of the SSB to be transmitted and a subcarrier interval of the Type0-PDCCH to be transmitted, so that the network device can transmit the SSB and the Type0-PDCCH to a terminal in a frequency division multiplexing manner on the th carrier, and can satisfy the OCB requirement by adjusting an appropriate subcarrier interval without adopting a subcarrier interval of when transmitting the SSB on a grant-free channel.

It can be known from the foregoing technical solution that in another aspect, in the embodiment of the present invention, a terminal receives an SSB and a Type0-PDCCH that are sent by a network device on a th carrier in a th frequency band, where a subcarrier interval of the SSB and a subcarrier interval of the Type0-PDCCH are selected by the network device from at least preconfigured subcarrier interval combinations according to a bandwidth of a th carrier in a th frequency band, an occupied channel bandwidth OCB requirement of the th carrier, a number of physical resource blocks occupied by the SSB, a number of physical resource blocks occupied by a search space of the Type0-PDCCH, and a number of offset physical resource blocks between the search space of the Type0-PDCCH and a frequency domain position of the SSB, and when the SSB is transmitted on a grant-free channel, the OCB requirement can be satisfied by adjusting an appropriate subcarrier interval without using a subcarrier interval of a system .

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

By adopting the technical scheme provided by the invention, the corresponding symbol can be shortened due to the increase of the subcarrier interval, and the SSB can be effectively sent as soon as possible within the limited Maximum Channel Occupancy Time (MCOT).

Drawings

In order to more clearly illustrate the technical solution of the embodiment of the present invention, is briefly introduced in the following for the embodiment or the drawings used in the description of the prior art, and it is obvious that the drawings in the following description are embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

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

fig. 2 is a flowchart illustrating another unlicensed spectrum channel transmission method according to another embodiment of the present invention;

fig. 3 is a flowchart illustrating another unlicensed spectrum channel transmission method according to another embodiment of the present invention;

fig. 4 is a flowchart illustrating another unlicensed spectrum channel transmission method according to another embodiment of the present invention;

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

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

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

fig. 8 is a schematic structural diagram of another terminals according to another embodiment of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are partial embodiments of of the present invention, rather than full embodiments.

The term "and/or" herein, which is only , describes the association relationship of the associated objects, indicates that there may be three relationships, for example, a and/or B, and may indicate that there are three cases of a alone, a and B together, and B alone.

However, with the rapid increase of traffic, especially in urban areas, the Licensed-Assisted Access (LAA) has passed in the 65 th conference of the 3GPP Radio Access Network (RAN), so that communication can be performed using a wireless communication technology on the unlicensed Spectrum, for example, LAA based on the LTE system or LAA based on the NR system.

Unlicensed spectrum is a spectrum divided by country or region that can be used for communication by communication devices, and is generally considered to be a shared spectrum, i.e., a spectrum that can be used by communication devices in different wireless communication systems as long as the communication devices meet the regulatory requirements set by the country or region on the spectrum, without applying for a proprietary spectrum license from the government.

For example, in european regions, communication devices follow the "listen-before-talk" (LBT) principle, that is, before a communication device performs signal transmission on a channel of the unlicensed spectrum, the communication device performs channel sensing on the channel of the unlicensed spectrum, the communication device can perform signal transmission only when the channel sensing result is that the channel is idle, and the communication device cannot perform signal transmission if the channel sensing result is that the channel is busy.

To ensure fairness, the duration of signal transmission by the communication device using the unlicensed spectrum Channel cannot exceed the Maximum Channel Occupancy Time (MCOT) in transmissions.

In order to further step avoid causing sub-band interference to the signal 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 needs to satisfy an Occupied Channel Bandwidth (OCB) requirement, that is, the signal transmitted on the Channel of the unlicensed spectrum needs to occupy at least a fixed proportion of the Channel Bandwidth, for example, on the Channel of the 5GHz band, the signal transmitted needs to occupy 80% of the Channel Bandwidth, or, for example, on the Channel of the 60GHz band, the signal transmitted needs to occupy 70% of the Channel Bandwidth, and so on.

Fig. 1 is a flowchart illustrating a channel transmission method of unlicensed spectrum according to an embodiment of of the present invention, as shown in fig. 1.

101. The network equipment sends at least two SSBs to a terminal on a carrier of a frequency band, wherein the at least two SSBs comprise a SSB and a second SSB, and a th subcarrier interval of the SSB is different from a second subcarrier interval of the second SSB.

Optionally, in possible implementation manners of the present embodiment, before 101, the method further includes the following two steps:

the network equipment determines the th subcarrier spacing of the th SSB according to the th carrier bandwidth, the OCB requirement of the th carrier and the number of the physical resource blocks occupied by the th SSB;

the network device determines the second subcarrier spacing of the second SSB according to the correspondence between the th frequency band and the preconfigured subcarrier spacing and frequency band of the SSB, for example, table 1 is the correspondence between the subcarrier spacing and frequency band of the SSB in the frequency band below 6GHz, table 2 is the correspondence between the subcarrier spacing and frequency band of the SSB in the frequency band above 6GHz, and the like.

TABLE 1 correspondence between sub-carrier spacing and frequency band of SSB in frequency band below 6GHz

TABLE 2 correspondence between subcarrier spacing and frequency band of SSB in frequency band above 6GHz

Wherein, Global Synchronization Channel Number (GSCN) is used to mark the Channel Number of SSB, each GSCNs corresponds to frequency domain positions SSREF of SSB, and GSCNs are numbered according to frequency domain increasing order.

For example, given that the th SSB occupies 20 PRBs in the frequency domain, assuming that the bandwidth of the th carrier is 20MHz, and the occupied channel bandwidth OCB of the th carrier is required to be D, the network device may determine that the th subcarrier spacing of the th SSB is at least 20000 × D/(20 × 12) KHz.

It can be understood that there is no fixed order for the network device to execute the above two steps, the step of determining the th subcarrier interval of the st SSB according to the bandwidth of the th carrier, the requirement of the occupied channel bandwidth OCB of the th carrier, and the number of physical resource blocks occupied by the th SSB may be executed first, the step of determining the second subcarrier interval of the second SSB according to the th frequency band and the corresponding relationship between the preconfigured subcarrier interval and frequency band of SSB is executed second, or the step of determining the second subcarrier interval of the second SSB according to the th frequency band and the corresponding relationship between the preconfigured subcarrier interval and frequency band of SSB may be executed first, the step of determining the second subcarrier interval of the SSB according to the bandwidth of the th carrier, the requirement of the occupied channel bandwidth OCB of the th carrier, and the number of the occupied physical resource blocks occupied by the SSB is executed first, the step of determining the 9634 th subcarrier interval of the SSB according to the bandwidth of the th carrier, the occupied channel bandwidth OCB requirement of the 856 th carrier, the step of the second subcarrier interval and the frequency band may be executed simultaneously, the step of determining the occupied channel interval of the second subcarrier interval of the second SSB 3648 according to the bandwidth of the second carrier band, the step of the second subcarrier interval, the step of the second SSB may be executed, and the step of determining the second subcarrier interval of the step of the second SSB may be executed third sub-executed.

Optionally, in possible implementation manners of this embodiment, in 101, the network device may specifically send the SSB and the second SSB to the terminal in different time units on the frequency band of the th carrier.

The time unit may include, but is not limited to, at least time slots, symbol sets such as Orthogonal Frequency Division Multiplexing (OFDM) symbol sets, and subframes, which is not particularly limited in this embodiment.

Optionally, in possible implementation manners of this embodiment, in 101, the network device may specifically send the SSB and the second SSB to the terminal on the frequency band of the th carrier in different transmission scenarios.

In specific implementation procedures, it can be assumed that the SSB sends separately, and the second SSB sends the downstream data simultaneously.

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

The network device may determine the second subcarrier spacing of the second SSB according to the th frequency band and a correspondence between the subcarrier spacing of the preconfigured SSB and the frequency band.

Thus, the th subcarrier spacing of the th SSB is greater than the second subcarrier spacing of the second SSB.

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

In specific implementation procedures, the network device may further steps may send a Type0-PDCCH to the terminal on a th carrier of a th frequency band and on a th carrier in a frequency division multiplexing manner with the third SSB, at the same time, the network device sends at least two SSBs to the terminal.

The Type 0-Physical Downlink Control Channel (PDCCH) is used for transmitting scheduling Information of a System Information Block (SIB), also called Remaining Minimum System Information (RMSI), and a subcarrier interval of the Type0-PDCCH is the same as a subcarrier interval of the RMSI.

, before the network device sends the third SSB and the Type0-PDCCH to the terminal on the th carrier in a frequency division multiplexing manner, the network device may further determine a third subcarrier interval of the third SSB and a subcarrier interval of the Type 0-PDCCH.

In specific implementation processes, the network device may specifically determine a third subcarrier interval of the third SSB according to the bandwidth of the th carrier, the requirement of the occupied channel bandwidth OCB of the th carrier, the number of physical resource blocks occupied by the third SSB, and the subcarrier interval of the Type0-PDCCH, where the subcarrier interval of the Type0-PDCCH is determined by the network device according to a correspondence between a preconfigured Type0-PDCCH subcarrier interval and a frequency band, for example, when the frequency of the th carrier is less than 6GHz, the network device corresponds to 15kHz and 30kHz, and when the frequency of the th carrier is greater than 6GHz, the network device corresponds to 60kHz and 120kHz, etc.

In another specific implementation procedures, the network device may specifically determine, according to the bandwidth of the th carrier, the OCB requirement of the th carrier, 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 number of offset physical resource blocks between the frequency domain positions of the Type0-PDCCH and the third SSB,

selecting subcarrier spacing combinations from at least preconfigured subcarrier spacing combinations as a third subcarrier spacing of the third SSB and a subcarrier spacing of the Type 0-PDCCH.

For example, it is known that SSBs occupy 20 PRBs in the frequency domain, the search space of Type0-PDCCH occupies 48 PRBs in the frequency domain, and assuming that the bandwidth of th carrier is 20MHz, the occupied channel bandwidth OCB of th carrier is required to be D, and the number of offset physical resource blocks between the search space of Type0-PDCCH and the frequency domain position of the third SSB is 41 PRBs, the network device may satisfy D ≦ (20 × 12 × third subcarrier spacing of the third SSB + (48+41-24-10) × 12 × subcarrier spacing of Type 0-PDCCH)/20000 KHz, and select subcarrier spacing combinations from at least preconfigured subcarrier spacing combinations.

For example, the preconfigured at least subcarrier spacing combinations may include, but are not limited to, at least of the following combinations:

the third subcarrier interval of the third SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 15 kHz;

the third subcarrier interval of the third SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 30 kHz;

the third subcarrier interval of the third SSB is 30kHz, and the subcarrier interval of the Type0-PDCCH is 15 kHz;

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

the third subcarrier interval of the third SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 60 kHz;

the third subcarrier interval of the third SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 120 kHz;

the third subcarrier interval of the third SSB is 30kHz, and the subcarrier interval of the Type0-PDCCH is 60 kHz;

the third subcarrier interval of the third SSB is 30kHz, and the subcarrier interval of the Type0-PDCCH is 120 kHz;

the third subcarrier interval of the third SSB is 120kHz, and the subcarrier interval of the Type0-PDCCH is 60 kHz;

the third subcarrier interval of the third SSB is 120kHz, and the subcarrier interval of the Type0-PDCCH is 120 kHz;

the third subcarrier interval of the third SSB is 240kHz, and the subcarrier interval of the Type0-PDCCH is 60 kHz; and

the third subcarrier spacing of the third SSB is 240kHz and the subcarrier spacing of the Type0-PDCCH is 120 kHz.

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

Specifically, the network device may send at least subcarrier interval combinations to the terminal through Downlink Control Information (DCI), higher layer signaling or system broadcast messages.

For example, the higher layer signaling may be a Radio Resource Control (RRC) message, specifically, the at least subcarrier interval combinations may be carried by an Information Element (IE) in the RRC message, and the RRC message may be an RRC message in the prior art, for example, an RRC CONNECTION RECONFIGURATION (RRC CONNECTION RECONFIGURATION) message and the like, which is not limited in this embodiment, and the IE of the existing RRC message is extended to carry the at least subcarrier interval combinations, or the RRC message may also be an RRC message different from an existing RRC message in the prior art.

Or, for another example, the higher layer signaling may be a Media Access Control (MAC) Control Element (CE) message, and specifically, the new MAC CE message may be added to carry the at least subcarrier spacing combinations.

For another example, the at least subcarrier interval combination may be carried by an existing Master Information Block (MIB) or a System Information Block (SIB) in the broadcast message of the System , or a new SIB carrying the at least subcarrier interval combination may be added.

It is to be understood that the at least subcarrier spacing combinations may also be defined by a protocol, and may also be partially configured by a network device and partially defined by the protocol, which is not particularly limited in this embodiment.

In this embodiment, at least two SSBs are sent to the terminal through the network device on the th carrier in the th frequency band, where the at least two SSBs include the th SSB and the second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB, and because the appropriate subcarrier interval is adjusted when the SSBs are transmitted on the license-free spectrum channel, the subcarrier interval of the system is no longer used, which can meet the OCB requirement.

Fig. 2 is a flowchart illustrating another unlicensed spectrum channel transmission methods according to another embodiment of the present invention, as shown in fig. 2.

201. The terminal receives at least two SSBs sent by the network equipment on a carrier of a th frequency band, wherein the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.

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

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

For another example, the network device may specifically determine the second subcarrier spacing of the second SSB according to a correspondence between the th frequency band and a preconfigured subcarrier spacing and frequency band of the SSB, for example, table 1 is a correspondence between a subcarrier spacing and a frequency band of the SSB in a frequency band below 6GHz, and table 2 is a correspondence between a subcarrier spacing and a frequency band of the SSB in a frequency band above 6 GHz.

Optionally, in possible implementation manners of this embodiment, in 201, the terminal may specifically receive the SSB and the second SSB that are sent by the network device on the th carrier of the th frequency band in different time units.

Optionally, in possible implementation manners of this embodiment, in 201, the terminal may specifically receive the SSB and the second SSB that are sent by the network device on the th carrier in the th frequency band in different transmission scenarios.

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

In specific implementation procedures, the terminal receives at least two SSBs sent by the network device on the frequency band th carrier at the same time, and the terminal may further receive Type0-PDCCH sent by the network device in a frequency division multiplexing manner with the third SSB.

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

For another example, the third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH may be specifically selected from at least preconfigured subcarrier spacing combinations by the network device according to the bandwidth of the carrier, the requirement of the occupied channel bandwidth OCB of the carrier, 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the third SSB.

Specifically, the terminal may specifically receive at least subcarrier interval combinations sent by the network device through Downlink Control Information (DCI), higher layer signaling or system broadcast messages.

In this embodiment, at least two SSBs sent by a network device on the carrier of the th frequency band are received by a terminal, where the at least two SSBs include the th SSB and the second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB, and because an appropriate subcarrier interval is adjusted when the SSBs are transmitted on a channel of an unlicensed spectrum, instead of using a subcarrier interval of the system , the OCB requirement can be satisfied.

Fig. 3 is a flowchart illustrating another unlicensed spectrum channel transmission methods according to another embodiment of the present invention, as shown in fig. 3.

301. The network equipment selects subcarrier interval combinations from at least preconfigured subcarrier interval combinations according to the bandwidth of the carrier of the frequency band, the OCB requirement of the carrier, the number of physical resource blocks occupied by the SSB to be sent, the number of physical resource blocks occupied by the search space of the Type0-PDCCH to be sent, and the number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the SSB, so as to serve as the subcarrier intervals of the SSB to be sent and the subcarrier intervals of the Type0-PDCCH to be sent.

302. And the network equipment transmits the SSB and the Type0-PDCCH to a terminal in a frequency division multiplexing mode on the th carrier.

For example, it is known that an SSB occupies 20 PRBs in the frequency domain, a search space of Type0-PDCCH occupies 48 PRBs in the frequency domain, and assuming that a bandwidth of th carrier is 20MHz, an occupied channel bandwidth OCB of th carrier is required to be D, and the number of offset physical resource blocks between the search space of Type0-PDCCH and the frequency domain position of the SSB is 41 PRBs, the network device may satisfy D ≦ (subcarrier spacing of 20 × SSB + (48+41-24-10) × 12 × Type 0-PDCCH)/20000 KHz, and select subcarrier spacing combinations from at least preconfigured subcarrier spacing combinations.

the subcarrier interval of the SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 15 kHz;

the subcarrier interval of the SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 30 kHz;

the subcarrier interval of the SSB is 30kHz, and the subcarrier interval of the Type0-PDCCH is 15 kHz;

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

the subcarrier interval of the SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 60 kHz;

the subcarrier interval of the SSB is 15kHz, and the subcarrier interval of the Type0-PDCCH is 120 kHz;

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

the subcarrier interval of the SSB is 30kHz, and the subcarrier interval of the Type0-PDCCH is 120 kHz;

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

the subcarrier interval of the SSB is 120kHz, and the subcarrier interval of the Type0-PDCCH is 120 kHz;

the subcarrier interval of the SSB is 240kHz, and the subcarrier interval of the Type0-PDCCH is 60 kHz; and

the SSB has a subcarrier spacing of 240kHz and the Type0-PDCCH has a subcarrier spacing of 120 kHz.

In this embodiment, according to the bandwidth of the carrier of the frequency band, the requirement of the occupied channel bandwidth OCB of the carrier, the number of physical resource blocks occupied by the SSB to be transmitted, 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 position of the SSB, the network device selects subcarrier interval combinations from at least preconfigured subcarrier interval combinations to serve as the subcarrier intervals of the SSB to be transmitted and the subcarrier intervals of the Type0-PDCCH to be transmitted, so that the network device can transmit the SSB and the Type0-PDCCH to the terminal in a frequency division multiplexing manner on the th carrier, and can meet the OCB requirement by adjusting appropriate subcarrier intervals without using the subcarrier intervals of the system when transmitting the SSB on the grant-free channel.

Fig. 4 is a flowchart illustrating another unlicensed spectrum channel transmission method according to another embodiment of the present invention, as shown in fig. 4.

401. And the terminal receives SSB and Type0-PDCCH sent by the network equipment on the carrier wave of the frequency band, wherein the subcarrier interval of the SSB and the subcarrier interval of the Type0-PDCCH are selected from at least preconfigured subcarrier interval combinations by the network equipment according to the bandwidth of the carrier wave of the frequency band, the OCB requirement of the occupied channel bandwidth of the carrier wave, 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the SSB.

In this embodiment, a terminal receives an SSB and a Type0-PDCCH sent by a network device on the th carrier of the th frequency band, where the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are selected from at least preconfigured subcarrier spacing combinations by the network device according to the bandwidth of the th carrier of the th frequency band, the OCB requirement of the occupied channel bandwidth of the th 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the SSB, and since when the SSB is transmitted on a channel of a licensed spectrum, the OCB requirement can be satisfied by adjusting an appropriate subcarrier spacing without using the subcarrier spacing of the system .

It should be noted that for simplicity of description, the aforementioned method embodiments are described as series combinations of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts described, as some steps may occur in other orders or concurrently with other steps in accordance with the invention.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

Fig. 5 is a schematic structural diagram of types of network devices 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 at least two SSBs to a terminal on a th carrier in a th frequency band, where the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.

Optionally, in possible implementation manners of this embodiment, the method may further include a step of determining a th subcarrier interval of the th SSB according to the bandwidth of the th carrier, the requirement of the th carrier on the occupied channel bandwidth OCB, and the number of physical resource blocks occupied by the th SSB, and determining a second subcarrier interval of the second SSB according to a correspondence between the th frequency band and a preconfigured SSB subcarrier interval and frequency band.

Optionally, in possible implementation manners of this embodiment, the sending unit 51 may be specifically configured to send the SSB and the second SSB to the terminal in different time units on the th carrier of the th frequency band, or send the SSB and the second SSB to the terminal in different transmission scenarios on the th carrier of the th frequency band.

Then, the sending unit 51 may be specifically configured to determine the th subcarrier spacing of the th SSB according to the th carrier bandwidth, the requirement of the th carrier on the occupied channel bandwidth OCB, and the number of physical resource blocks occupied by the th SSB, and determine the second subcarrier spacing of the second SSB according to the th frequency band and the correspondence between the preconfigured SSB subcarrier spacing and frequency band.

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

, the transmitting unit 51 may further be configured to use to transmit a Type0-PDCCH to the terminal on the th carrier in a frequency division multiplexing manner with the third SSB.

, the sending unit 51 may further include a step of determining a third subcarrier spacing of the third SSB according to the bandwidth of the th carrier, the requirement of the occupied channel bandwidth OCB of the th carrier, the number of physical resource blocks occupied by the third SSB, and the subcarrier spacing of the Type0-PDCCH, where the subcarrier spacing of the Type0-PDCCH is determined by the network device according to a corresponding relationship between the subcarrier spacing and the frequency band of the pre-configured Type0-PDCCH, or according to the bandwidth of the th carrier, the requirement of the occupied channel bandwidth OCB of the th carrier, the number of physical resource blocks occupied by the third SSB, the number of physical resource blocks occupied by the Type0-PDCCH, and the number of shifted physical resource blocks between the search space of the Type0-PDCCH and the frequency domain location of the third SSB, selecting a subcarrier combination from at least preconfigured subcarrier spacing combinations as the subcarrier spacing of the third SSB and the subcarrier spacing of the third SSB 0.

In the present invention, the at least subcarrier spacing combinations may be configured by a network device, or may also be agreed by a protocol, or may also be partially configured by the network device and partially agreed by the protocol, which is not particularly limited in this embodiment.

It should be noted that, the method executed by the network device in the embodiment corresponding to fig. 1 may be implemented by the network device apparatus provided in this embodiment. For a detailed description, reference may be made to relevant contents in the embodiment corresponding to fig. 1, and details are not described here.

In this embodiment, a sending unit sends at least two SSBs to a terminal on a th carrier in a th frequency band, where the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB, and because an appropriate subcarrier interval is adjusted when the SSBs are transmitted on a channel of an unlicensed spectrum, instead of using a subcarrier interval of a system , an OCB requirement can be satisfied.

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 according to this embodiment may include a receiving unit 61, configured to receive at least two SSBs sent by a network device on a th carrier of a th frequency band, where the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.

Optionally, in possible implementation manners of this embodiment, the receiving unit 61 may be specifically configured to receive the SSB and the second SSB that are sent by the network device on the frequency band of the th carrier in different time units, or receive the SSB and the second SSB that are sent by the network device on the frequency band of the th carrier in different transmission scenarios.

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

, the receiving unit 61 may further be configured to receive a Type0-PDCCH sent by the network device in frequency division multiplexing with the third SSB, wherein,

the third sub-carrier interval of the third SSB is determined by the network device according to the bandwidth of the th carrier, the OCB requirement of the th carrier on the occupied channel bandwidth, the number of physical resource blocks occupied by the third SSB and the sub-carrier interval of the Type0-PDCCH, wherein the sub-carrier interval of the Type0-PDCCH is determined by the network device according to the corresponding relationship between the pre-configured Type0-PDCCH sub-carrier interval and the frequency band, or

The third subcarrier spacing of the third SSB and the subcarrier spacing of the Type0-PDCCH are selected from at least preconfigured subcarrier spacing combinations by the network device according to the bandwidth of the carrier, the requirement of the occupied channel bandwidth OCB of the carrier, 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the third SSB.

It should be noted that the method executed by the terminal in the embodiment corresponding to fig. 2 may be implemented by the terminal device provided in this embodiment. For a detailed description, reference may be made to relevant contents in the embodiment corresponding to fig. 2, which is not described herein again.

In this embodiment, a receiving unit receives at least two SSBs sent by a network device on a th carrier of a th frequency band, where the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB, and because an appropriate subcarrier interval is adjusted when the SSBs are transmitted on a channel of an unlicensed spectrum, the subcarrier interval of the system is no longer used, which can meet the OCB requirement.

Fig. 7 is a schematic structural diagram of another network devices according to another embodiment of the present invention, where the network device according to this embodiment may include a determining unit 71 and a transmitting unit 72, as shown in fig. 7, where the determining unit 71 is configured to select subcarrier spacing combinations from at least preconfigured subcarrier spacing combinations according to a bandwidth of a th carrier of a th frequency band, an occupied channel bandwidth OCB requirement of the th carrier, the number of physical resource blocks occupied by an SSB to be transmitted, the number of physical resource blocks occupied by a search space of a Type0-PDCCH to be transmitted, and the number of offset physical resource blocks between the search space of the Type0-PDCCH and a frequency domain position of the SSB, so as to serve as a subcarrier spacing of the SSB to be transmitted and a subcarrier spacing of the Type0-PDCCH to be transmitted, and the transmitting unit 72 is configured to transmit the SSB and the Type0-PDCCH to a terminal on the th carrier in a frequency division multiplexing manner.

It should be noted that, the method executed by the network device in the embodiment corresponding to fig. 3 may be implemented by the network device apparatus provided in this embodiment. For a detailed description, reference may be made to relevant contents in the embodiment corresponding to fig. 3, which is not described herein again.

In this embodiment, according to the bandwidth of the carrier of the th frequency band, the OCB requirement of the occupied channel bandwidth of the th carrier, the number of physical resource blocks occupied by the SSB to be transmitted, 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 position of the SSB, the determining unit selects subcarrier interval combinations from at least preconfigured subcarrier interval combinations to serve as the subcarrier interval of the SSB to be transmitted and the subcarrier interval of the Type0-PDCCH to be transmitted, so that the transmitting unit can transmit the SSB and the Type0-PDCCH to the terminal in a frequency division multiplexing manner on the th carrier, and when the SSB is transmitted on the channel of the unlicensed spectrum, the OCB requirement can be satisfied by adjusting an appropriate subcarrier interval without using the subcarrier interval of the system .

Fig. 8 is a schematic structural diagram of another terminals according to another embodiment of the present invention, where as shown in fig. 8, a terminal according to this embodiment may include a receiving unit 81 configured to receive an SSB and a Type0-PDCCH sent by a network device on a th carrier of a th frequency band, where a subcarrier interval of the SSB and a subcarrier interval of the Type0-PDCCH are selected from at least preconfigured subcarrier interval combinations by the network device according to a bandwidth of a th carrier of a th frequency band, an occupied channel bandwidth OCB requirement of the th carrier, a number of physical resource blocks occupied by the SSB, a number of physical resource blocks occupied by a search space of the Type0-PDCCH, and a number of offset physical resource blocks between the search space of the Type0-PDCCH and a frequency domain position of the SSB.

It should be noted that the method executed by the terminal in the embodiment corresponding to fig. 4 may be implemented by the terminal device provided in this embodiment. For a detailed description, reference may be made to relevant contents in the embodiment corresponding to fig. 4, which are not described herein again.

In this embodiment, a receiving unit receives an SSB and a Type0-PDCCH sent by a network device on the th carrier of the th frequency band, where the subcarrier spacing of the SSB and the subcarrier spacing of the Type0-PDCCH are selected from at least preconfigured subcarrier spacing combinations by the network device according to the bandwidth of the th carrier of the th frequency band, the OCB requirement of the occupied channel bandwidth of the th 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the SSB, and since when the SSB is transmitted on a grant-free spectrum channel, the OCB requirement can be satisfied by adjusting an appropriate subcarrier spacing without using the subcarrier spacing of the system .

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units into logical functional divisions may be realized in other ways, for example, multiple units or components may be combined or integrated into another systems, or features may be omitted or not executed, in another point, the shown or discussed coupling or direct coupling or communication connection between each other may be through interfaces, indirect coupling or communication connection between the units or devices, and may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in places, or may also be distributed on multiple network units.

In addition, the functional units in the embodiments of the present invention may be integrated into processing units, or each unit may exist alone physically, or two or more units are integrated into units.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

A method for unlicensed spectrum channel transmission, comprising:

the network equipment sends at least two SSBs to a terminal on a carrier of a frequency band, wherein the at least two SSBs comprise a SSB and a second SSB, and a th subcarrier interval of the SSB is different from a second subcarrier interval of the second SSB.
The method of claim 1, wherein before the network device transmits at least two SSBs to the terminal on the carrier in the th frequency band, the method further comprises:

the network equipment determines the th subcarrier spacing of the th SSB according to the th carrier bandwidth, the OCB requirement of the th carrier and the number of the physical resource blocks occupied by the th SSB;

and the network equipment determines the second subcarrier interval of the second SSB according to the th frequency band and the corresponding relation between the subcarrier intervals and the frequency bands of the pre-configured SSB.
The method of claim 1, wherein the network device transmits at least two SSBs to the terminal on the carrier in the th frequency band, comprising:

the network equipment sends the SSB and the second SSB to the terminal on the carrier of the th frequency band in different time units or

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

the network device sends a Type0-PDCCH to the terminal on the th carrier in a frequency division multiplexing mode with the third SSB, wherein the network device further comprises, before sending the third SSB and the Type0-PDCCH to the terminal on the th carrier in a frequency division multiplexing mode:

the network equipment determines the third subcarrier interval of the third SSB according to the bandwidth of the th carrier, the OCB requirement of the th carrier, the number of physical resource blocks occupied by the third SSB and the subcarrier interval of the Type0-PDCCH, wherein the subcarrier interval of the Type0-PDCCH is determined by the network equipment according to the corresponding relation between the subcarrier interval of the pre-configured Type0-PDCCH and the frequency band, or

The network device selects subcarrier interval combinations from at least preconfigured subcarrier interval combinations according to the bandwidth of the th carrier, the requirement of the occupied channel bandwidth OCB of the th carrier, 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the third SSB, to serve as the third subcarrier interval of the third SSB and the subcarrier interval of the Type 0-PDCCH.
The method of claim 6, wherein the at least subcarrier spacing combinations are configured by the network device or agreed upon by a protocol.
A method for unlicensed spectrum channel transmission, comprising:

the terminal receives at least two SSBs sent by the network equipment on a carrier of a th frequency band, wherein the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.
The method of claim 8, wherein the terminal receives at least two SSBs transmitted by the network device on the carrier of the th frequency band, and wherein the method comprises:

the terminal receives the SSB and the second SSB sent by the network device in different time units on the carrier of the th frequency band, or

The terminal receives the SSB and the second SSB sent by the network device on the carrier of the th frequency band in different transmission scenarios.
The method of claim 9, wherein the time unit comprises at least of a slot, a set of symbols, and a subframe.
The method of claim 9 or 10 wherein the th SSB is received separately and the second SSB is received simultaneously with downlink data, and wherein the th subcarrier spacing of the th SSB is greater than the second subcarrier spacing of the second SSB.
The method as claimed in any of claims 8-11- , wherein the at least two SSBs further include a third SSB, and wherein the receiving by the terminal of the at least two SSBs transmitted by the network device on the th carrier in the frequency band further includes:

the terminal receives a Type0-PDCCH sent by the network equipment in a frequency division multiplexing mode with the third SSB; wherein the content of the first and second substances,

the third sub-carrier interval of the third SSB is determined by the network device according to the bandwidth of the th carrier, the OCB requirement of the th carrier on the occupied channel bandwidth, the number of physical resource blocks occupied by the third SSB and the sub-carrier interval of the Type0-PDCCH, wherein the sub-carrier interval of the Type0-PDCCH is determined by the network device according to the corresponding relationship between the pre-configured Type0-PDCCH sub-carrier interval and the frequency band, or

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

the network equipment selects subcarrier interval combinations from at least preconfigured subcarrier interval combinations according to the bandwidth of a carrier of an frequency band, the OCB requirement of the carrier on the occupied channel bandwidth, the number of physical resource blocks occupied by SSB to be sent, the number of physical resource blocks occupied by a Type0-PDCCH to be sent, and the number of offset physical resource blocks between the Type0-PDCCH search space and the frequency domain position of the SSB, so as to serve as the subcarrier intervals of the SSB to be sent and the subcarrier intervals of the Type0-PDCCH to be sent;

and the network equipment transmits the SSB and the Type0-PDCCH to a terminal in a frequency division multiplexing mode on the th carrier.
The method of claim 14, wherein the at least subcarrier spacing combinations are configured by the network device or agreed upon by a protocol.
A method for unlicensed spectrum channel transmission, comprising:

and the terminal receives SSB and Type0-PDCCH sent by the network equipment on the carrier wave of the frequency band, wherein the subcarrier interval of the SSB and the subcarrier interval of the Type0-PDCCH are selected from at least preconfigured subcarrier interval combinations by the network equipment according to the bandwidth of the carrier wave of the frequency band, the OCB requirement of the occupied channel bandwidth of the carrier wave, 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 number of offset physical resource blocks between the search space of the Type0-PDCCH and the frequency domain position of the SSB.
The method of claim 16, wherein the at least subcarrier spacing combinations are configured by the network device or agreed upon by a protocol.
A network device, comprising:

a sending unit, configured to send at least two SSBs to a terminal on a th carrier in an th frequency band, where the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.
The network device of claim 18, wherein the sending unit is further configured to send the message to the network device

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

and determining a second subcarrier interval of the second SSB according to the th frequency band and the corresponding relation between the subcarrier intervals and the frequency bands of the pre-configured SSB.
Network device according to claim 18, wherein said sending unit is specifically configured to send said data to said network device

Transmitting the SSB and the second SSB to the terminal in different time units on the th carrier of the th frequency band, or

Transmitting the SSB and the second SSB to the terminal on a th carrier of an th frequency band in different transmission scenarios.
The network device of claim 20, wherein the time unit comprises at least of slots, symbol sets, and subframes.
The network device of claim 20, wherein the th SSB is sent separately, wherein the second SSB is sent simultaneously with downstream data, and wherein a th subcarrier spacing of the th SSB is greater than a second subcarrier spacing of the second SSB.
The network device of any one of claims 18-22 to , wherein the at least two SSBs further comprise a third SSB, and wherein the sending unit is further configured to send the third SSB to the network device

On the th carrier, sending a Type0-PDCCH to the terminal in a frequency division multiplexing manner with the third SSB;

the sending unit is also used for

Determining a third subcarrier interval of the third SSB according to the bandwidth of the th carrier, the OCB requirement of the th carrier, the number of physical resource blocks occupied by the third SSB and the subcarrier interval of the Type0-PDCCH, wherein the subcarrier interval of the Type0-PDCCH is determined by the network equipment according to the corresponding relationship between the subcarrier interval of the pre-configured Type0-PDCCH and the frequency band, or

Selecting subcarrier interval combinations from at least preconfigured subcarrier interval combinations as a third subcarrier interval of the third SSB and a subcarrier interval of the Type0-PDCCH according to the bandwidth of the th carrier, the OCB requirement of the th carrier, the number of physical resource blocks occupied by the third SSB, the number of physical resource blocks occupied by the Type0-PDCCH, and the number of offset physical resource blocks between the Type0-PDCCH and the frequency domain position of the third SSB.
The network device of claim 23, wherein the at least subcarrier spacing combinations are configured by the network device or agreed upon by a protocol.
terminal, comprising:

the receiving unit is configured to receive at least two SSBs sent by the network device on a th carrier of a th frequency band, where the at least two SSBs include a th SSB and a second SSB, and a th subcarrier interval of the th SSB is different from a second subcarrier interval of the second SSB.
Terminal according to claim 25, wherein the receiving unit is specifically configured to

Receiving the SSB and the second SSB transmitted by the network device in different time units on the carrier of the th frequency band, or

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

Receiving a Type0-PDCCH sent by the network equipment in a frequency division multiplexing mode with the third SSB; wherein the content of the first and second substances,

the third sub-carrier interval of the third SSB is determined by the network device according to the bandwidth of the th carrier, the OCB requirement of the th carrier on the occupied channel bandwidth, the number of physical resource blocks occupied by the third SSB and the sub-carrier interval of the Type0-PDCCH, wherein the sub-carrier interval of the Type0-PDCCH is determined by the network device according to the corresponding relationship between the pre-configured Type0-PDCCH sub-carrier interval and the frequency band, or

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

a determining unit, configured to select subcarrier interval combinations from at least preconfigured subcarrier interval combinations according to a bandwidth of a th carrier of an th frequency band, an occupied channel bandwidth OCB requirement of the th carrier, a number of physical resource blocks occupied by an SSB to be sent, a number of physical resource blocks occupied by a search space of a Type0-PDCCH to be sent, and a number of offset physical resource blocks between the search space of the Type0-PDCCH and a frequency domain position of the SSB, where the selected subcarrier interval combinations are used as subcarrier intervals of the SSB to be sent and subcarrier intervals of the Type0-PDCCH to be sent;

a sending unit, configured to send the SSB and the Type0-PDCCH to a terminal in a frequency division multiplexing manner on the th carrier.
The network device of claim 31, wherein the at least subcarrier spacing combinations are configured by the network device or agreed upon by a protocol.
terminal, comprising:

a receiving unit, configured to receive an SSB and a Type0-PDCCH sent by a network device on a th carrier of a th frequency band, where a subcarrier interval of the SSB and a subcarrier interval of the Type0-PDCCH are selected from a preconfigured combination of at least subcarrier intervals by the network device according to a bandwidth of a th carrier of the th frequency band, an occupied channel bandwidth OCB requirement of the th carrier, a number of physical resource blocks occupied by the SSB, a number of physical resource blocks occupied by a search space of the Type0-PDCCH, and a number of offset physical resource blocks between the search space of the Type0-PDCCH and a frequency domain position of the SSB.
The terminal of claim 33, wherein the at least subcarrier spacing combinations are configured by the network device or agreed upon by a protocol.