CN115190642A

CN115190642A - Signal transmission method, network device, terminal, device and storage medium

Info

Publication number: CN115190642A
Application number: CN202110357735.XA
Authority: CN
Inventors: 王俊伟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-10-14

Abstract

The embodiment of the application provides a signal transmission method, network equipment, a terminal, a device and a storage medium, wherein the method comprises the following steps: dividing a signal to be transmitted into a plurality of first signals and a plurality of second signals, wherein the number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is the maximum number of signals allowed to be transmitted in an interception-free LBT mode in a signal transmission period; determining candidate positions of each first signal and each second signal, each second signal corresponding to at least two candidate positions; and transmitting a first signal at the corresponding candidate position based on the LBT-free mode, and transmitting a second signal at the corresponding at least two candidate positions based on the LBT mode. The method, the network equipment, the terminal, the device and the storage medium provided by the embodiment of the application are used for carrying out signal transmission by combining an LBT-free mode and a multi-candidate position mode, so that the condition that signals cannot be transmitted due to LBT failure is reduced, and the reliability of signal transmission is ensured.

Description

Signal transmission method, network device, terminal, device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a signal transmission method, a network device, a terminal, an apparatus, and a storage medium.

Background

The NR (New radio, new air interface) system may use SSB (Synchronous signaling block) for downlink synchronization. Particularly in high frequency technologies for NR evolution, a cell needs to support transmission of up to 64 SSBs.

The NR-U (unlicensed) technology aims at studying new air interface applications in unlicensed frequency bands. Aiming at the problem that SSB cannot be transmitted due to LBT (Listen Before Talk) application in the NR-U technology, the currently proposed solution is to introduce DBTW (Data burst transmission window) for SSB transmission, and how to implement feasible SSB transmission based on DBTW for high-frequency unlicensed spectrum is still a problem to be urgently solved.

Disclosure of Invention

The embodiment of the application provides a signal transmission method, network equipment, a terminal, a device and a storage medium, which are used for solving the defect that an SSB (signaling stability Block) may not be sent due to the application of LBT (local binary Transmission) in the prior art.

In a first aspect, an embodiment of the present application provides a signal transmission method, including:

dividing a signal to be transmitted into a plurality of first signals and a plurality of second signals, wherein the number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is the maximum number of signals allowed to be transmitted in an interception-free LBT mode in a signal transmission period;

determining candidate positions of each first signal and each second signal, wherein each second signal corresponds to at least two candidate positions;

and transmitting the first signal at the corresponding candidate position based on an LBT-free mode, and transmitting the second signal at the corresponding at least two candidate positions based on the LBT mode.

Optionally, according to a signal transmission method according to an embodiment of the present application, the determining candidate positions of each first signal and each second signal includes:

determining candidate positions in a transmission window where a signal to be transmitted is located;

and configuring one candidate position for each first signal and at least two candidate positions for each second signal based on the index number of the candidate positions in the transmission window.

Optionally, according to a signal transmission method according to an embodiment of the present application, the determining a candidate position in a transmission window where a signal to be transmitted is located includes:

setting a candidate position at an empty time slot in the transmission window, and/or,

setting candidate positions at blank symbols in a non-blank time slot of the transmission window;

the blank time slot is a time slot without a candidate position, the non-blank time slot is a time slot with a candidate position of the signal, and the blank symbol is a symbol without a candidate position.

Optionally, according to a signal transmission method in an embodiment of the present application, the configuring, based on an index number of the candidate positions in the transmission window, one candidate position for each first signal and at least two candidate positions for each second signal includes:

configuring a first candidate position for each first signal, wherein the index number of the first candidate position corresponds to the signal number of the corresponding first signal one to one;

and configuring at least two second candidate positions for each second signal, wherein the index number of each second candidate position is related to the signal number of the corresponding second signal, the number of the first signals and a preset value, and the preset value is an integer which is greater than or equal to the number of the second signals.

Optionally, according to the signal transmission method in an embodiment of the present application, a difference between the index number of the second candidate location and the number of the first signals and a modulus of the preset value are equal to a difference between a signal number corresponding to the second signal and the number of the first signals.

Optionally, according to a signal transmission method according to an embodiment of the present application, the preset number threshold is determined based on a subcarrier interval of a signal.

Optionally, according to a signal transmission method of an embodiment of the present application, the method for determining the preset number threshold includes:

determining the signal duty ratio of each candidate number at the subcarrier interval, wherein the signal duty ratio is the ratio of the time occupied by transmitting the signals of the corresponding candidate number to the signal transmission period;

and determining the candidate number corresponding to the maximum signal duty ratio smaller than or equal to a preset duty ratio threshold value as the preset number threshold value.

In a second aspect, an embodiment of the present application further provides a signal transmission method, including:

receiving a signal;

the signals comprise a plurality of first signals and a plurality of second signals, the number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is the maximum number of signals which are allowed to be transmitted in a listen-free LBT mode in a signal transmission period; the first signal is sent by the network device in the corresponding candidate position based on the LBT-exempt mode, and the second signal is sent by the network device in the corresponding at least two candidate positions based on the LBT mode.

Optionally, according to a signal transmission method according to an embodiment of the present application, the receiving the signal further includes:

determining the index number of the candidate position received by the received signal in the transmission window;

determining a signal number of the signal based on an index number of a reception candidate position of the signal.

Optionally, according to a signal transmission method in an embodiment of the present application, the determining a signal number of the signal based on an index number of a candidate position for receiving the signal includes:

if the index number of the receiving candidate position of any signal has the signal number of the first signal corresponding to the index number, the signal number of the first signal corresponding to the index number is the signal number of the signal;

otherwise, determining the signal number of any signal based on the index number of the receiving candidate position of any signal, a preset value and the number of the first signals, wherein the preset value is an integer which is larger than or equal to the number of the second signals.

Optionally, according to a signal transmission method of an embodiment of the present application, the determining a signal number of any one of the signals based on an index number of a candidate receiving position of the any one of the signals, a preset value, and the number of the first signals includes:

and calculating the difference between the index number of the candidate receiving position of any signal and the number of the first signals and the modulus of the preset numerical value, and taking the sum of the modulus and the number of the first signals as the signal number of any signal.

In a third aspect, an embodiment of the present application further provides a network device, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the signal transmission method according to the first aspect as described above.

In a fourth aspect, an embodiment of the present application further provides a terminal, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the signal transmission method according to the second aspect.

In a fifth aspect, an embodiment of the present application further provides a signal transmission apparatus, including:

the signal dividing unit is used for dividing a signal to be transmitted into a plurality of first signals and a plurality of second signals, wherein the number of the first signals is less than or equal to a preset number threshold value, and the preset number threshold value is the maximum number of signals allowed to be transmitted in an interception-free LBT mode in a signal transmission period;

a position determining unit for determining candidate positions of each first signal and each second signal, each second signal corresponding to at least two candidate positions;

and the signal sending unit is used for sending the first signal at the corresponding candidate position based on the LBT-free mode and sending the second signal at the corresponding at least two candidate positions based on the LBT mode.

In a sixth aspect, an embodiment of the present application further provides a signal transmission apparatus, including:

a signal receiving unit for receiving a signal;

the signals comprise a plurality of first signals and a plurality of second signals, the number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is the maximum number of signals which are allowed to be transmitted in a listen-free LBT mode in a signal transmission period; the first signal is sent by the network equipment at the corresponding candidate position based on an LBT-free mode, and the second signal is sent by the network equipment at the corresponding at least two candidate positions based on the LBT mode.

In a seventh aspect, this application embodiment further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the steps of the signal transmission method according to the first aspect or the second aspect.

According to the signal transmission method, the network equipment, the terminal, the device and the storage medium, the signal is divided into the plurality of first signals and the plurality of second signals, and the signal transmission is carried out in a mode of being free of LBT and in a mode of being located at multiple candidate positions, so that the situation that the signal cannot be transmitted due to LBT failure is reduced, and the reliability of signal transmission is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of an SSB provided in an embodiment of the present application;

fig. 2 is a schematic diagram of candidate locations of SSBs at SCS =120KHz provided in the embodiment of the present application;

fig. 3 is a schematic diagram of an SSB transmission window of multiple candidate locations according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a signal transmission method according to an embodiment of the present application;

fig. 5 is one of the schematic diagrams of the candidate location expansion of SSB at SCS =120KHz provided in the embodiment of the present application;

fig. 6 is a second schematic diagram of the expansion of the candidate positions of SSB at SCS =120KHz according to the embodiment of the present application;

fig. 7 is a second schematic flowchart of a signal transmission method according to an embodiment of the present application;

fig. 8 is a schematic diagram of signal transmission provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of signal number calculation of an SSB provided in an embodiment of the present application;

fig. 10 is a second schematic diagram of signal transmission provided by the embodiment of the present application;

fig. 11 is a second schematic diagram illustrating signal number calculation of the SSB according to the embodiment of the present application;

FIG. 12 is a schematic representation of SSB reduction provided by embodiments of the present application;

fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

fig. 15 is a schematic structural diagram of a signal transmission device according to an embodiment of the present application;

fig. 16 is a second schematic structural diagram of a signal transmission device according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic structural diagram of an SSB provided in an embodiment of the present application, and as shown in fig. 1, the SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). The PBCH is located at the position filled with the texture in fig. 1, specifically, the PBCH is located in the symbol after the PSS and the SSS, and the data of the PBCH is also located at both ends of the SSS. When a User Equipment (UE) searches a cell, synchronous search is carried out according to a Power System Synchronization (PSS)/Secondary Synchronization System (SSS), and after the synchronous search is completed, a Physical Broadcast Channel (PBCH) is received.

In the high frequency technology of NR evolution, SSB with SCS (subcarrier spacing) of 120KHz is agreed to be supported, and the SSB structure is consistent with the existing NR technology. Fig. 2 is a schematic diagram of candidate positions of SSBs at SCS =120KHz according to an embodiment of the present application, and as shown in fig. 2, when SCS =120KHz, a total of 40 slots are included in one 5ms period, where candidate positions of SSBs are set in the first 4 slots of every 5 consecutive slots, and for example, the first symbol position indexes occupied by the candidate positions of SSBs among the 28 symbols are 4, 8, 16, and 20, respectively. The first symbol position index sent by the candidate position of the SSB in the 5ms period thus obtained is:

{4,8,16,20}+28*n,n＝0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18

in the unlicensed spectrum technology, in order to effectively support the transmission of SSBs and alleviate the problem caused by the failure of SSBs due to LBT failure, the NRU adopts the SSB cyclic shift method, that is, in one data transmission window, the system designs more SSBs candidate transmission positions (for example, 4 SSBs are actually transmitted and 10 SSBs candidate positions are set), allocates multiple transmission opportunities to each SSB, and when the SSBs cannot be transmitted on the first transmission opportunity due to LBT failure, the network device has a chance to transmit the SSBs on the second transmission opportunity.

For example, in the case of SCS =15KHz and the operating frequency at 3GHz, the SSB transmission window of the multi-candidate location as shown in fig. 3 may be set. The specific operation method can comprise the following two steps:

first, the number of candidate positions of the SSB is expanded, for example, from 4 candidate positions to 10 candidate positions shown in fig. 3;

second, pass parameter Q (or

) And the detected candidate SSB index (SSB candidate position index) calculates the SSB index (actual index number of SSB). Here, the number of the first and second electrodes,

is a parameter for calculating Quasi Co-Location (QCL). The calculation method of the SSB index can be expressed as the following formula:

SSB index＝mod(candidate SSB index，Q)

where mod () is a complementation formula. The Q parameter indicates the number of SSBs that are most likely to be transmitted, for example, the Q value is 2 in fig. 3, and the indication method of the specific Q value may be associated with one parameter in PBCH, where Q is 2 when the parameter is odd and Q is 1 when the parameter is even.

Fig. 3 shows a schematic diagram of candidate locations, where the operating frequency spectrum is less than 3GHz, there are 5 candidate locations available for transmission per SSB. In the SSB transmission window, there is an opportunity to transmit an SSB as long as LBT succeeds.

However, for SSB with SCS =120KHz, up to 64 SSB scenarios need to be supported. Referring to the candidate location diagram shown in fig. 2, the current standard discussion limits the SSB transmission window to be less than or equal to 5ms, and it is assumed that a maximum of 80 SSB candidate locations can be set in the 5ms SSB transmission window, and thus, it is not practical to provide 2 or more than 2 transmitted candidate locations for each SSB, and therefore, the problem of LBT failure cannot be solved only by allocating more SSB candidate locations.

Furthermore, in the high frequency technology, the 802.11 technology agrees to: when the node sends short control signaling (short control signaling), the node can avoid LBT to directly send. The short control signaling is characterized by: within a certain transmission period (e.g. 100 ms), the duty cycle is less than 10%, i.e. the transmission time is less than 10ms.

However, as can be seen from the structural diagram of the SSBs shown in fig. 1, each SSB occupies 4 symbols. Assuming that the transmission period of the SSB is 20ms, the time duration required to support 64 SSB transmissions is (64 × 4/14) = 0.125=2.28ms, and the duty cycle at the period of 20ms is 11.42%, exceeding the maximum requirement of 10% duty cycle. Therefore, the transmission of SSB cannot be realized only by means of LBT-free.

In view of the foregoing, an embodiment of the present application provides a signal transmission method. Fig. 4 is a schematic flowchart of a signal transmission method provided in an embodiment of the present application, and as shown in fig. 4, an execution subject of the method is a network device, and the method is applicable to transmission of various signals, for example, to transmission of an SSB, or to transmission of Channel state information reference (CSI-RS) for performing Channel measurement, or may also be applied to transmission of a Random Access signal (PRACH). The method comprises the following steps:

step 110, dividing the signal to be transmitted into a plurality of first signals and a plurality of second signals, where the number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is a maximum number of signals allowed to be transmitted in an listen-free LBT manner in a signal transmission period.

Step 120, candidate positions of each first signal and each second signal are determined, each second signal corresponding to at least two candidate positions.

And step 130, transmitting a first signal at the corresponding candidate position based on the LBT-exempt mode, and transmitting a second signal at the corresponding at least two candidate positions based on the LBT mode.

Specifically, the signals to be transmitted refer to all the same type of signals that need to be transmitted in one signal transmission period, for example, 64 SSRs need to be transmitted in one 20ms signal transmission period. The signal referred to herein may specifically be an SSR, or may be other signals that need to be transmitted, and this is not specifically limited in this embodiment of the present application.

In order to avoid the problem that the signal cannot be transmitted due to the failure of LBT transmission, the signal transmission may be performed in an LBT-free manner, or in a manner of allocating a plurality of candidate positions to the same signal. However, because the LBT-free transmission method has a duty ratio or other limiting conditions, it is not practical to transmit all signals to be transmitted in an LBT-free manner, and the method of allocating multiple candidate positions to the same signal is implemented on the premise that two or more candidate positions can be configured for each signal, and the number of candidate positions available in a signal transmission period generally cannot satisfy the condition, so that the signal to be transmitted is divided into two parts, that is, a plurality of first signals and a plurality of second signals.

The first signal is a signal transmitted by the LBT-exempt scheme, and the second signal is a signal transmitted at a plurality of candidate positions. In order to ensure that both transmission modes can be realized, the number of the first signals is required to be less than or equal to a preset number threshold, and the number of candidate positions configured for each second signal is at least two.

Here, the preset number threshold is the maximum number of signal transmissions that meets the requirement required for transmitting signals in the LBT-less manner. For example, under an SSB transmission period of 20ms, assuming that the LBT-exempt direct transmission duty cycle is 10% at the maximum, the maximum number of SSB transmissions, i.e., the preset number threshold, may be set to 56, thereby resulting in a number of SSBs of the first signal of 56 at the maximum.

Further, on the premise that the number of the signals to be transmitted is constant, the sum of the number of the first signals and the number of the second signals is the number of the signals to be transmitted, and the smaller the number of the first signals is, the larger the number of the second signals is, the larger the number of the required candidate positions is. On the premise that the number of the first signals is smaller than the preset number threshold, it is further required to ensure that the number of the second signals is appropriate, so as to ensure that the number of candidate positions respectively configured for each second signal is at least two.

Specifically, when the candidate positions are allocated, the candidate positions may be allocated to the first signal and the second signal according to the number of all candidate positions in a predetermined signal transmission cycle. The number of candidate positions allocated to the first signal may be one or more, and the number of candidate positions allocated to the second signal must be two or more, thereby ensuring that if LBT fails at one candidate position, the second signal may have other candidate positions for transmission.

The first and second signals may be transmitted after the division of the first and second signals and the configuration of the candidate locations is completed. Specifically, during transmission, for the first signal, the signal may be transmitted in an LBT-free manner at the candidate position corresponding to the first signal, that is, without LBT, and the signal is directly transmitted. For the second signal, LBT may be performed on each candidate position corresponding to the second signal, respectively, and if LBT succeeds on any candidate position, the signal is sent on the candidate position, and if LBT fails on any candidate position, the signal is not sent on the candidate position.

According to the method provided by the embodiment of the application, the signal is divided into the plurality of first signals and the plurality of second signals, and the LBT-free mode and the multi-candidate position mode are combined for signal transmission, so that the condition that the signal cannot be transmitted due to LBT failure is reduced, and the reliability of signal transmission is ensured.

Based on the above embodiment, step 120 includes:

determining candidate positions in a transmission window where a signal to be transmitted is positioned;

based on the index number of the candidate positions in the transmission window, one candidate position is configured for each first signal, and at least two candidate positions are configured for each second signal.

Specifically, a plurality of candidate positions may be preset in a transmission window in which a signal to be transmitted is located. The candidate positions here may be agreed in the protocol, or may be obtained by further expanding on the basis of agreement of the protocol according to the division condition of the first signal and the second signal, that is, the number of candidate positions actually required to be applied. The number of the specifically determined candidate positions is recorded as M, the number of the signals to be transmitted is recorded as N, and M > N.

Further, after the division of the first signal and the second signal is completed, assuming that the number of the first signals is N1 and the number of the second signals is N2, M ≧ N1+ N2 × 2.

After determining each candidate position in the transmission window, candidate position configuration may be performed for each first signal and each second signal based on the index number of each candidate position. Specifically, during configuration, the candidate positions of the first signal and the second signal may be configured one by one according to the order of the index numbers of the candidate positions, or the candidate positions of the first signal and the second signal may be configured according to the preset correspondence between the index numbers of the candidate positions and the signal numbers of the first signal and the second signal.

After the configuration is completed, each first signal corresponds to one candidate position, and each second signal corresponds to two or more candidate positions.

Based on any of the above embodiments, in step 120, the determining a candidate position in a transmission window where a signal to be transmitted is located includes:

candidate positions are set at empty slots in the transmission window, and/or,

setting candidate positions at blank symbols in a non-blank time slot of a transmission window;

the blank time slot is a time slot without a candidate position, the non-blank time slot is a time slot with a candidate position of a signal, and the blank symbol is a symbol without a candidate position.

Specifically, the candidate positions are expanded based on the protocol convention, one is to set the candidate positions at blank time slots in the transmission window, the other is to set the candidate positions at blank symbols in non-blank time slots of the transmission window, the other is to set the candidate positions at blank time slots in the transmission window, and the other is to set the candidate positions at blank symbols in non-blank time slots of the transmission window.

Here, the blank time slot is a time slot in which a candidate position of a signal to be transmitted is not set, for example, time slots with indices #4, #9, #14, and #19 shown in fig. 2. In the candidate position expansion, the candidate position may be set at a blank slot in the transmission window, for example, fig. 5 is one of the candidate position expansion diagrams of SSB when SCS =120KHz provided in the embodiment of the present application, and as shown in fig. 5, the candidate position is set on blank slots #4 and #14, and assuming that the number of candidate positions that can be set every two slot combinations is 4, 8 candidate positions may be expanded and set in one period of 5 ms. Alternatively, it may be selected to set candidate positions on the blank time slots #9 and #19, or it may be selected to set candidate positions on all the blank time slots #4, #9, #14, and #19, which is not particularly limited in this embodiment of the present invention.

The non-blank time slots are time slots where candidate positions of the signal to be transmitted originally exist, for example, the time slots with indexes #0, #1, #2, #3, #5, etc. shown in fig. 2. Blank symbols, i.e. symbols in which candidate positions for a signal to be transmitted are not set, such as symbols #0- #3, #16- #19 of non-blank time slot #0 shown in fig. 2. When performing candidate position expansion, candidate positions may be set at blank symbols in non-blank slots of a transmission window, for example, fig. 6 is a second schematic diagram of candidate position expansion of SSB when SCS =120KHz provided by the embodiment of the present application, as shown in fig. 6, in a unit formed by every two slots, a candidate position of an SSB is set with symbol #12 as a start, and 16 candidate positions may be set in an expansion manner in a period of 5 ms. Alternatively, a candidate position of one SSB may be set starting from symbol #0, or a candidate position of one SSB may be set starting from symbol #24, which is not specifically limited in the embodiment of the present invention.

On this basis, the two candidate position expansion setting modes can be combined, so that the candidate position is set at the blank time slot in the transmission window, and the candidate position is also set at the blank symbol in the non-blank time slot of the transmission window, and the specific expansion setting mode is not described again here.

According to the method provided by the embodiment of the application, the candidate positions are set at the blank time slot position in the transmission window and/or the blank symbol position in the non-blank time slot, so that the candidate positions of the signals to be transmitted are expanded, and the configuration of at least two candidate positions for each second signal is guaranteed.

Based on any of the above embodiments, in step 120, configuring one candidate position for each first signal and at least two candidate positions for each second signal based on the index number of the candidate positions in the transmission window includes:

and configuring at least two second candidate positions for each second signal, wherein the index number of each second candidate position is related to the signal number of the corresponding second signal, the number of the first signals and a preset value, and the preset value is an integer which is more than or equal to the number of the second signals.

Specifically, after determining the index numbers of the candidate positions available for transmitting the signal in the transmission window, the candidate positions may be configured for the first signal and the second signal according to the index numbers of the candidate positions, respectively. Further, for the sake of distinction, a candidate position arranged for the first signal is regarded as a first candidate position, and a candidate position arranged for the second signal is regarded as a second candidate position.

Considering that each first signal only needs to configure one candidate position to achieve LBT-free transmission of the first signal, the first candidate position corresponding to each first signal may be configured for each first signal based on a preset correspondence between the signal number of the first signal and the index number of the first candidate position, in combination with the index number of the candidate position. Here, the signal number of the first signal is an actual index number of the first signal, and the correspondence between the signal number of the first signal and the index number of the first candidate position is a one-to-one correspondence, for example, the signal number of the first signal and the index number of the first candidate position may be consistent, and for example, a difference between the signal number of the first signal and the index number of the first candidate position may be a preset constant, which is not specifically limited in the embodiment of the present application.

After satisfying the one-to-one configuration of the first signal and its first candidate position, all remaining candidate positions in the transmission window may be applied to the configuration of the second candidate position of the second signal. Specifically, the corresponding second candidate position may be configured for each second signal based on a preset correspondence between the signal number of the second signal and the index number of the second candidate position thereof, in combination with the index number of the candidate position. Here, the correspondence between the signal number of the second signal and the index number of the second candidate position is a one-to-many relationship, and the correspondence between the signal number of the second signal and the index number of the second candidate position depends on the number of the first signals and a preset value, which is a preset integer greater than or equal to the number of the second signals and is related to the number of the first signals, so that the index number of the first candidate position already allocated to the first signal can be ascertained when the second candidate position is allocated to the second signal, thereby determining the index number of the candidate position allocated to the second signal; a preset value equal to or greater than the number of the second signals is associated, so that when the second candidate positions are allocated to the second signals, the second candidate positions can be sequentially allocated to each of the second signals with the preset value as a round period.

Based on any of the above embodiments, the difference between the index number of the second candidate position and the number of the first signals and the modulus of the preset value are equal to the difference between the signal number corresponding to the second signal and the number of the first signals.

Specifically, assume that the total number of signals to be transmitted is N, the number of first signals is N1, the number of second signals is N2, and N1+ N2= N. The signal number index of the first signal is 0 to N1-1, and the signal number index of the second signal is N1 to N-1. The total number of candidate positions in the transmission window is M, and the index numbers of the candidate positions candidate _ index are 0 to M-1.

The first candidate position is allocated to each first signal according to a one-to-one correspondence relationship between the signal number index of the first signal and the index number candidate _ index of the first candidate position, for example, the signal number index of the first signal and the index number candidate _ index of the first candidate position are identical, i.e., index = candidate _ index, and then the candidate positions corresponding to the first signal having the same index number candidate _ index as the signal number index of the first signal can be allocated to the corresponding first signal as the first candidate positions.

The second candidate position is allocated for each second signal according to the corresponding relationship between the signal number index of the second signal and the index number candidate _ index of the second candidate position, for example, the difference between the index number candidate _ index of the second candidate position and the number N1 of the first signals and the modulus of the preset value Q is equal to the difference between the signal number index of the corresponding second signal and the number N1 of the first signals, i.e. index = mod (candidate _ index-N1, Q) + N1.

Based on any of the above embodiments, the preset number threshold is determined based on the subcarrier spacing of the signal.

Specifically, in the NR system, the setting of the subcarrier spacing is more flexible. For different subcarrier intervals, the thresholds for the preset number of signals transmitted in the LBT-free manner are correspondingly different. For example SCS =120KHz, preset number threshold =56; SCS =480KHz, preset number threshold =64.

Based on any one of the above embodiments, the method for determining the preset number threshold includes:

determining the signal duty ratio of each candidate number under the subcarrier interval, wherein the signal duty ratio is the ratio of the time occupied for transmitting the signals of the corresponding candidate number to the signal transmission period;

and determining the candidate number corresponding to the maximum signal duty ratio smaller than or equal to the preset duty ratio threshold value as the preset number threshold value.

Specifically, the candidate number is a predetermined number value that may become a preset number threshold, and the candidate number may be multiple, and the same or different candidate numbers may be set for different subcarrier intervals. For example, for SCS =120KHz, the candidate numbers may be set to 48, 50, 52, 54, 56, 58, 60, 62, and 64, respectively.

For any candidate number, the time taken for transmitting the candidate number of signals at the currently set subcarrier interval may be calculated, and thus the ratio of the time taken for transmitting the candidate number of signals to the signal transmission period is taken as the signal duty ratio of the candidate number. For example, for SCS =120KHz, the signal duty ratio for each candidate number is as shown in table 1:

TABLE 1 SSB duty cycle of SCS =120KHz

The signals in table 1 are specifically SSBs, the total number of signals to be transmitted is 64, and the number of SSBs requiring LBT is the number of SSBs that need to be transmitted based on the LBT method in the candidate number of SSBs under the condition that the preset duty cycle threshold is met.

Assuming that the preset duty cycle threshold is 10%, the maximum of the candidate numbers in table 1 that satisfy the signal duty cycle responses less than or equal to 10% is 56, and the number of SSBs requiring LBT is 0 at this time, that is, 56 SSBs can all be transmitted in the LBT-free manner. The number of the first signals may be 56, which is used as a preset number threshold, and an integer smaller than or equal to the preset number threshold is selected as the number of the first signals, for example, 56 first signals may be divided, or 52 first signals may be divided.

The method provided by the embodiment of the application determines the preset number threshold value based on the subcarrier interval to guide the division of the first signal and the second signal, so that the first signal transmitted in an LBT-free mode is ensured to accord with the preset transmission rule.

Based on any of the foregoing embodiments, fig. 7 is a second flowchart of the signal transmission method provided in the embodiments of the present application, and as shown in fig. 7, the main execution body of the method is a terminal, and the method may be applied to reception of various signals, for example, reception of an SSB, reception of a CSI-RS, or reception of a PRACH. The method comprises the following steps:

step 710, receiving a signal;

the signals comprise a plurality of first signals and a plurality of second signals, the number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is the maximum number of signals allowed to be transmitted in an interception-free LBT mode in a signal transmission period; the first signal is sent by the network equipment at the corresponding candidate position based on an LBT-free mode, and the second signal is sent by the network equipment at the corresponding at least two candidate positions based on the LBT mode.

Specifically, in step 710, the signals received by the terminal refer to all the same type of signals that need to be transmitted in one signal transmission period, for example, 64 SSRs need to be transmitted in one 20ms signal transmission period. The signal referred to herein may specifically be an SSR, or may be other signals that need to be transmitted, and this is not specifically limited in this embodiment of the present application.

In order to avoid the problem that the signal cannot be transmitted due to the failure of LBT transmission, the network device may perform signal transmission in an LBT-free manner, or in a manner of allocating multiple candidate positions for the same signal. However, because the LBT-free transmission method has a duty ratio or other limiting condition, it is not practical to transmit all signals to be transmitted in an LBT-free manner, and the method of allocating multiple candidate positions to the same signal is implemented on the premise that two or more candidate positions can be configured for each signal, and the number of candidate positions available in a signal transmission period generally cannot satisfy the condition.

The first signal is a signal transmitted by the LBT-exempt scheme, and the second signal is a signal transmitted at a plurality of candidate positions. In order to ensure that both transmission modes can be implemented, the number of the first signals is required to be less than or equal to a preset number threshold, and the number of candidate positions configured for each second signal is at least two.

Here, the preset number threshold is the maximum number of signal transmissions that satisfy the requirement for LBT-exempt signal transmission. For example, under an SSB transmission period of 20ms, assuming that the LBT-exempt direct transmission duty cycle is 10% at the maximum, the maximum number of SSB transmissions, i.e., the preset number threshold, may be set to 56, thereby resulting in a number of SSBs of the first signal of 56 at the maximum.

Further, on the premise that the number of the signals to be transmitted is constant, the sum of the number of the first signals and the number of the second signals is the number of the signals to be transmitted, and the smaller the number of the first signals is, the larger the number of the second signals is, the more the number of the required candidate positions is. On the premise that the number of the first signals is smaller than the preset number threshold, it is further required to ensure that the number of the second signals is appropriate, so as to ensure that the number of candidate positions respectively configured for each second signal is at least two.

Specifically, when the candidate positions are allocated, the candidate positions may be allocated to the first signal and the second signal according to the number of all candidate positions in a predetermined signal transmission period. The number of candidate positions allocated to the first signal may be one or more, and the number of candidate positions allocated to the second signal must be two or more, thereby ensuring that if LBT fails at one candidate position, the second signal may have other candidate positions for transmission.

After the division of the first signal and the second signal and the configuration of the candidate locations are completed, the network device may transmit the first signal and the second signal. Specifically, during the sending, for the first signal, the network device may send the signal in the candidate position corresponding to the first signal in an LBT-free manner, that is, without performing LBT, and directly send the signal. For the second signal, the network device may perform LBT on each candidate location corresponding to the second signal, respectively, and if the LBT is successful in any candidate location, the network device sends a signal in the candidate location, and if the LBT is failed in any candidate location, the candidate location does not send a signal.

Based on any of the above embodiments, step 710 further includes:

Specifically, the candidate position is distinguished from a candidate position available for signal transmission, and the reception candidate position is a position at which the terminal actually receives a signal and is a candidate position at which signal transmission is successful. For a first signal, a candidate position for reception of the first signal is a candidate position for the first signal, and for a second signal, a candidate position for reception of the second signal is a candidate position for successful LBT among at least two candidate positions for the second signal.

After receiving the signal, the terminal may determine, based on the information carried in the signal, an index number of a candidate position in the transmission window where the signal is received. Taking the SSB as an example, after detecting the existence of the SSB, the terminal may determine the index number of the actual transmission position where the SSB is detected from the information carried by the SSB.

Each candidate position in the transmission window where the signal is located is known in advance, and the correspondence between the index number based on each candidate position and the signal number of the signal is also set in advance, so that the signal number of the signal received at the reception candidate position can be acquired based on the index number of the reception candidate position.

Based on any of the above embodiments, the determining a signal number of the signal based on the index number of the candidate position for receiving the signal includes:

otherwise, determining the signal number of the signal based on the index number of the candidate receiving position of the signal, a preset value and the number of the first signals, wherein the preset value is an integer greater than or equal to the number of the second signals.

Specifically, considering that each first signal only needs to configure one candidate location to achieve LBT-free transmission of the first signal, the LBT-free transmission may be implemented based on a one-to-one correspondence relationship between a signal number of the preset first signal and an index number of the candidate location thereof, for example, the signal number of the first signal and the index number of the candidate location thereof may be consistent, and for example, a difference between the signal number of the first signal and the index number of the candidate location may be a preset constant, which is not specifically limited in the embodiment of the present application.

Furthermore, after satisfying the one-to-one configuration of the first signal and its first candidate position, all remaining candidate positions in the transmission window may be applied to the configuration of the second candidate position of the second signal. The obtained corresponding relation between the signal number of the second signal and the index number of the second candidate position is a one-to-many relation, the corresponding relation between the signal number of the second signal and the index number of the second candidate position depends on the number of the first signal and a preset value, the preset value is an integer which is preset and is more than or equal to the number of the second signal, and the preset value is related to the number of the first signal, so that the index number of the first candidate position which is configured to the first signal can be confirmed when the second candidate position is configured to the second signal, and the index number which can be configured to the candidate position of the second signal can be confirmed; a preset value equal to or greater than the number of the second signals is associated, so that when the second candidate positions are allocated to the second signals, the second candidate positions can be sequentially allocated to each of the second signals with the preset value as a round period.

Therefore, when determining the signal number of the corresponding signal based on the index number of the known reception candidate position, first considering the one-to-one correspondence relationship, so that the index number has a signal number corresponding to one of the index number, it can be determined that the reception candidate position is a candidate position corresponding to the first signal, the signal transmitted by the reception candidate position is the first signal, and the signal number corresponding to the reception candidate position is the signal number of the transmission signal of the reception candidate position.

If the index number does not have a signal number corresponding to the index number one to one, the candidate receiving position is one of at least two candidate positions corresponding to the second signal, the signal transmitted by the candidate receiving position is the second signal, and at this time, the signal number of the signal transmitted by the candidate receiving position is obtained by combining the corresponding relation between the signal number of the second signal and the index number of the candidate position determined based on the preset value and the number of the first signals.

Based on any of the above embodiments, the determining the signal number of the signal based on the index number of the candidate receiving position of the signal, the preset value and the number of the first signals includes:

and calculating the difference between the index number of the receiving candidate position of the signal and the number of the first signals and the modulus of a preset value, and taking the sum of the modulus and the number of the first signals as the signal number of the signal.

Specifically, assume that the total number of received signals is N, the number of first signals is N1, the number of second signals is N2, and N1+ N2= N. The signal number index of the first signal is 0 to N1-1, and the signal number index of the second signal is N1 to N-1. The total number of candidate positions in the transmission window is M, and the index numbers of the candidate positions candidate _ index are 0 to M-1.

According to the one-to-one correspondence relationship between the signal number index of the first signal and the index number candidate _ index of the candidate position, it can be determined whether the index number candidate _ index of any receiving candidate position has the signal number index corresponding to it, if so, the signal number index corresponding to it is used as the signal number of the transmitting signal of the receiving candidate position. Further, the one-to-one correspondence may be expressed as index = candidate _ index, and if the index number of the reception candidate position candidate _ index is < N1, the index number of the reception candidate position candidate _ index may be directly used as the signal number of the reception candidate position transmission signal.

If there is no signal number index corresponding to the index number candidate _ index of any receiving candidate position, the corresponding relationship between the signal number index of the second signal and the index number candidate _ index of the second candidate position can be used to determine the signal number of the transmission signal at the receiving candidate position, where the corresponding relationship is the difference between the index number candidate _ index of the second candidate position and the number N1 of the first signals and the module value of the preset value Q, which is equal to the difference between the signal number index of the corresponding second signal and the number N1 of the first signals, i.e., index = mod (index _ index-N1, Q) + N1. Here mod () is a complementation formula.

In the above calculation process, the preset value Q may be a default value, for example, when the network device and the terminal operate on high frequency unauthorized, it may be assumed that Q =12.

The preset value Q may carry an information indication through the SSB, or may be associated through existing information. For example, the indication may be associated with a Resource Element (RE) offset value of a Physical resource in a Physical Downlink Control Channel (PDCCH) and a Physical Resource Block (PRB) of the SSB.

In addition, in the above calculation process, the number N1 of the first signals may also be a default value. For example, when the network device and the terminal operate on high frequency non-authorization, N1=52 may be assumed.

Further, with SCS =120KHz, Q and N1 may be obtained by a relational expression, for example, Q + N1=64. Based on the above relationship, the terminal may determine one of Q or N1, and determine the other.

Based on any of the above embodiments, a signal transmission method applied to SSB transmission may include the following steps:

with SCS =120KHz, the total number N =64 of SSBs to be transmitted within the 5ms transmission window. The SSBs are divided according to a preset number threshold 56, so as to obtain N1 first SSBs and N2 second SSBs, where N1=56, and N2= N-N1 = 64-56 =8. The preset number threshold is determined based on the SSB duty ratio shown in table 1.

Here, the 56 first SSBs may have a signal number of SSB-0, SSB-1, SSB-2, \8230;, SSB-55. The signal number of the 8 second SSBs may be SSB-56, SSB-57, SSB-58, \ 8230;, SSB-63.

Further, it should be noted that: the signal numbers of the 8 second SSBs may also be SSBs-0-7, and the signal numbers of the 56 first SSBs may also be SSBs-08-63, which is not specifically limited in this embodiment of the present application.

In order to provide multiple transmission opportunities for the second SSB, as shown in fig. 5, in a candidate position expansion manner, candidate positions are set at blank slots in a transmission window, and specifically, candidate positions may be set on blank slots #4 and #14, so as to obtain a total number of candidate positions M =72 of the SSB, specifically, in a transmission window of 5ms, a first symbol position index transmitted by the SSB is (new #4 and # 9):

{4,8,16,20}+28*n,n＝0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,16,17,18

fig. 8 is one of schematic diagrams of signal transmission provided in the embodiment of the present application, and as shown in fig. 8, 56 first SSBs may transmit at N1=56 candidate positions: the signal number of the first SSB corresponds to the index number of the candidate position one to one, and LBT is not performed when the first SSB is transmitted, and the first SSB is directly transmitted.

8 second SSBs, according to the LBT case, are sent in 8 out of M-N1=16 candidate locations.

Subsequently, the terminal receives the SSB sent by the network device, and determines the signal number SSB index of the received SSB according to the index number SSB-candidate-index of the received SSB, where the SSB is located, and the specific determination method is as follows:

if SSB-candidate-index < = N1-1:

SSB_index＝SSB_candidate_index

if SSB-candidate-index > = N1:

SSB_index＝mod(SSB_candidate_index-N1,Q)+N1

further, assuming that Q =8, the signal number calculation of ssb is as shown in fig. 9.

When the candidate position index number of SSB is SB57, SSB index =56+ mod (57-56, 8) =57; when the candidate position index number of SSB is SB64, SSB index =56+ mod (64-56, 8) =56; when the candidate position index number of SSB is SB71, SSB index =56+ mod (71-56, 8) =63.

with SCS =120KHz, the total number N =64 of SSBs to be transmitted within the 5ms transmission window. The SSBs are divided according to a preset number threshold 56, so as to obtain N1 first SSBs and N2 second SSBs, where N1=52, and N2= N-N1 = 64-52 =12. The preset number threshold is determined based on the SSB duty ratio shown in table 1. Here, N =64 is a specific example, and N may be a numerical value of another integer type.

Here, the 52 first SSBs may have a signal number of SSB-0, SSB-1, SSB-2, \8230;, SSB-51. The 12 second SSBs may have a signal number of SSB-52, SSB-53, SSB-54, \ 8230;, SSB-63.

Further, it should be noted that: the 12 second SSBs may also have SSBs-0-11, and the 52 first SSBs may also have SSBs-12-63, which is not specifically limited in this embodiment of the present application.

In order to provide multiple transmission opportunities for the second SSB, as shown in fig. 6, in a candidate position expansion manner, candidate positions are set at blank symbols in non-blank time slots in a transmission window, specifically, a candidate position of an SSB is set with a symbol #12 as a start in a unit formed by every two time slots (that is, the start position of the newly added SSB candidate is a symbol #12: the newly added SSB candidate positions occupy 4 symbols in total, and are #12/#13/#14/#15, respectively), so that a total number of candidate positions M =80 of the SSB is obtained, specifically, in a 5ms transmission window, a first symbol position index sent by the SSB is (newly added symbol # 12):

{4,8,12,16,20}+28*n,n＝0,1,2,3,4,5,6,7,8,10,11,12,13,14,15,16,17,18

fig. 10 is a second schematic diagram of signal transmission provided in the embodiment of the present application, and as shown in fig. 10, 52 first SSBs may be transmitted at N1=52 candidate locations: the signal number of the first SSB corresponds to the index number of the candidate position one to one, and LBT is not performed when the first SSB is transmitted, and the first SSB is directly transmitted.

The 12 second SSBs, according to the LBT case, are sent in 12 out of M-N1=28 candidate locations.

Then, the terminal receives the SSB sent by the network device, and determines the signal number SSB index of the received SSB according to the received index number SSB-candidate-index of the candidate location where the SSB is located, where the specific determination method is as follows:

if SSB-candidate-index < = N1-1:

SSB_index＝SSB_candidate_index

if SSB-candidate-index > = N1:

SSB_index＝mod(SSB_candidate_index-N1,Q)+N1

further, assuming that Q =12, the signal number calculation of ssb is as shown in fig. 11.

When the candidate position index number of SSB is SB53, SSB index =52+ mod (53-52, 12) =53; when the candidate position index number of SSB is SB63, SSB index =52+ mod (63-52, 12) =63; when the candidate position index number of SSB is SB79, SSB index =52+ mod (79-52,12) =55.

It should be noted that the transmission method may be applied not only to the signal transmission of the SSB, but also to CSI-RS, PRACH, or other types of signal transmission, and the specific implementation method is consistent with the signal transmission method applied to the SSB, and is not described herein again.

Based on any of the above embodiments, in view of the problem that the duty cycle exceeds the highest requirement of the duty cycle in the transmission period when the SSB signal is transmitted by using the LBT-exempt method alone, for example, when SCS =120KHz, the maximum number of SSBs that can be transmitted by using the LBT-exempt method is 56, that is, the maximum transmission of 64 SSBs is not supported. In this case, the reduction of the symbols of the partial SSB can be also solved.

Fig. 12 is a schematic view of reducing SSB provided in an embodiment of the present application, and as shown in fig. 12, reducing and shortening the SSB may be implemented by two different processing manners, that is, option 1 and option 2 in fig. 12:

where option 1 indicates that only two symbols, PSS and SSS, are transmitted, and no PBCH symbol is transmitted, the PBCH symbol referred to herein includes a portion of PBCH on the SSS symbol. The terminal may detect whether a partial PBCH exists on the SSS, and if not, consider that no PBCH exists, that is, the currently received SSB is an incomplete SSB. Here, detecting whether the partial PBCH is present on the SSS may be implemented based on energy detection.

Option 2 indicates that only two symbols, PSS and SSS, are transmitted, and no PBCH symbol is transmitted, where the PBCH symbol referred to herein includes a partial PBCH over the SSS symbol. Unlike option 1, the part on the SSS symbol in option 2 that was used to send the partial PBCH is used to send other sequence signals; the terminal may detect whether a partial PBCH exists on the SSS, and if not, consider that no PBCH exists, that is, the currently received SSB is an incomplete SSB. Here, detecting whether the partial PBCH is present on the SSS may be implemented based on sequence detection.

Fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application, where as shown in fig. 13, the network device includes a memory 1320, a transceiver 1300, a processor 1310:

a memory 1320 for storing computer programs; a transceiver 1300 for transceiving data under the control of the processor; a processor 1310 for reading the computer program in the memory and performing the following:

In fig. 13, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1310, and various circuits, represented by memory 1320, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1300 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like.

The processor 1310 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1310 in performing operations.

Alternatively, the processor 1310 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also have a multi-core architecture.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Optionally, the determining the candidate position of each first signal and each second signal includes:

and configuring one candidate position for each first signal and at least two candidate positions for each second signal based on the index numbers of the candidate positions in the transmission window.

Optionally, the determining a candidate position in a transmission window in which a signal to be transmitted is located includes:

Optionally, the configuring, based on the index number of the candidate position in the transmission window, one candidate position for each first signal and at least two candidate positions for each second signal includes:

Optionally, a difference between the index number of the second candidate position and the number of the first signals and a modulus of the preset value are equal to a difference between a signal number corresponding to a second signal and the number of the first signals.

Optionally, the preset number threshold is determined based on a subcarrier spacing of the signal.

Optionally, the method for determining the preset number threshold includes:

and determining the candidate number corresponding to the maximum signal duty ratio which is less than or equal to a preset duty ratio threshold value as the preset number threshold value.

It should be noted that, the network device provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the network device, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated here.

Fig. 14 is a schematic structural diagram of a terminal according to an embodiment of the present invention, where as shown in fig. 14, the terminal includes a memory 1420, a transceiver 1400, and a processor 1410:

a memory 1420 for storing computer programs; a transceiver 1400 for transceiving data under the control of the processor 1410; a processor 1410 configured to read the computer program in the memory 1420 and perform the following operations:

receiving a signal;

In particular, transceiver 1400 is used to receive and transmit data under the control of processor 1410.

In fig. 14, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1410, and various circuits, represented by the memory 1420, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1400 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, optical fiber cables, and the like. For different user devices, the user interface 1430 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1410 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1410 in performing operations.

Alternatively, the processor 1410 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

Optionally, the receiving the signal further includes:

Optionally, the determining a signal number of the signal based on an index number of a candidate position for receiving the signal includes:

otherwise, determining the signal number of any signal based on the index number of the candidate receiving position of any signal, a preset value and the number of the first signals, wherein the preset value is an integer greater than or equal to the number of the second signals.

Optionally, the determining a signal number of any signal based on the index number of the candidate receiving position of any signal, a preset value and the number of the first signals includes:

It should be noted that, the terminal provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the terminal, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

Fig. 15 is a schematic structural diagram of a signal transmission device according to an embodiment of the present application, and as shown in fig. 15, the signal transmission device includes:

a signal dividing unit 1510, configured to divide a signal to be transmitted into a plurality of first signals and a plurality of second signals, where a number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is a maximum number of signals allowed to be transmitted in a listen-free LBT manner in a signal transmission period;

a position determining unit 1520 for determining candidate positions of each first signal and each second signal, each second signal corresponding to at least two candidate positions;

a signal transmitting unit 1530, configured to transmit the first signal at the corresponding candidate position based on an LBT-exempt manner, and transmit the second signal at the corresponding at least two candidate positions based on an LBT manner.

Optionally, the position determining unit 1520 is configured to:

newly adding a setting candidate position at a blank time slot in the transmission window, and/or,

newly adding a setting candidate position at a blank symbol in the non-blank time slot of the transmission window;

Optionally, the position determining unit 1520 is configured to:

Optionally, the apparatus further includes a preset number threshold determining unit, configured to:

Specifically, the signal transmission apparatus provided in this embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is a network device, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

Fig. 16 is a second schematic structural diagram of a signal transmission device according to an embodiment of the present application, and as shown in fig. 16, the signal transmission device includes:

a signal receiving unit 1610 for receiving a signal;

Optionally, the apparatus further comprises a number determination unit configured to:

Optionally, the number determination unit is configured to:

and calculating the difference between the index number of the receiving candidate position of any signal and the number of the first signals and the modulus of the preset value, and taking the sum of the modulus and the number of the first signals as the signal number of any signal.

Specifically, the signal transmission device provided in this embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the terminal, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

It should be noted that, in the foregoing embodiments of the present application, the division of the units/modules is schematic, and is only a logic function division, and another division manner may be used in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

Optionally, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the method provided in each of the foregoing embodiments, and the method includes:

dividing a signal to be transmitted into a plurality of first signals and a plurality of second signals, wherein the number of the first signals is less than or equal to a preset number threshold, and the preset number threshold is the maximum number of signals allowed to be transmitted in a monitoring-free LBT mode in a signal transmission period;

determining candidate positions of each first signal and each second signal, each second signal corresponding to at least two candidate positions;

Or comprises the following steps:

receiving a signal;

It should be noted that: the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.

In addition, it should be noted that: the technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a universal internet Access (WiMAX) system, a New Radio Network (NR) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5 GS), and the like.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange languages and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), and a user device (user device), which is not limited in this embodiment.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be called an access point, or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB) or an e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico), and the like, which are not limited in the embodiments of the present application. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). According to the form and the number of the root antenna combination, the MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, and can also be diversity transmission, precoding transmission, beamforming transmission, etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A signal transmission method, comprising:

and transmitting the first signal at the corresponding candidate position based on an LBT-exempt mode, and transmitting the second signal at least two corresponding candidate positions based on an LBT mode.

2. The signal transmission method of claim 1, wherein determining the candidate position of each first signal and each second signal comprises:

3. The signal transmission method according to claim 2, wherein the determining the candidate position in the transmission window of the signal to be transmitted comprises:

4. The signal transmission method according to claim 2, wherein the configuring one candidate position for each first signal and at least two candidate positions for each second signal based on the index number of the candidate positions in the transmission window comprises:

5. The signal transmission method according to claim 4, wherein the difference between the index number of the second candidate position and the number of the first signals and the modulus of the preset value are equal to the difference between the signal number corresponding to the second signal and the number of the first signals.

6. The signal transmission method according to any one of claims 1 to 5, wherein the preset number threshold is determined based on a subcarrier spacing of a signal.

7. The signal transmission method according to claim 6, wherein the method for determining the preset number threshold comprises:

8. A method of signal transmission, comprising:

receiving a signal;

9. The signal transmission method of claim 8, wherein the receiving the signal further comprises:

10. The signal transmission method according to claim 9, wherein the determining the signal number of the signal based on the index number of the reception candidate location of the signal comprises:

11. The signal transmission method according to claim 10, wherein the determining the signal number of the any signal based on the index number of the reception candidate position of the any signal, and a preset value and the number of the first signals comprises:

12. A network device comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following:

13. The network device of claim 12, wherein determining the candidate location for each first signal and each second signal comprises:

14. The network device of claim 13, wherein the determining the candidate position in the transmission window of the signal to be transmitted comprises:

setting a candidate position at an empty slot in the transmission window, and/or,

15. The network device of claim 13, wherein the configuring of one candidate location for each first signal and at least two candidate locations for each second signal based on the index number of the candidate locations in the transmission window comprises:

16. The network device of claim 15, wherein a difference between the index number of the second candidate location and the number of the first signals and a modulus of the preset value are equal to a difference between a signal number corresponding to a second signal and the number of the first signals.

17. The network device of any of claims 12 to 16, wherein the preset number threshold is determined based on a subcarrier spacing of a signal.

18. The network device of claim 17, wherein the method for determining the preset number threshold comprises:

19. A terminal, comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving a signal;

20. The terminal of claim 19, wherein the receiving the signal further comprises:

21. The terminal of claim 20, wherein the determining the signal number of the signal based on the index number of the reception candidate location of the signal comprises:

if the index number of the candidate receiving position of any signal has the signal number of the first signal corresponding to one of the index numbers, the signal number of the first signal corresponding to the index number is the signal number of the signal;

22. The terminal of claim 21, wherein the determining the signal number of any signal based on the index number of the reception candidate position of any signal, and a preset value and the number of the first signals comprises:

23. A signal transmission apparatus, comprising:

24. A signal transmission apparatus, comprising:

a signal receiving unit for receiving a signal;

25. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 11.