CN112566279A

CN112566279A - Indication and receiving method of bandwidth segment of straight-through link and terminal

Info

Publication number: CN112566279A
Application number: CN201910919175.5A
Authority: CN
Inventors: 任晓涛; 赵锐
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2021-03-26
Anticipated expiration: 2039-09-26
Also published as: CN112566279B

Abstract

The invention discloses an indication and receiving method of a bandwidth segment of a direct link and a terminal. The method for indicating the bandwidth segment of the through link comprises the following steps: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP. The scheme of the invention can indicate the configuration information of the SL-BWP in the broadcast channel PSBCH of the straight-through link, thereby not only reducing the signaling overhead of the broadcast channel, but also improving the flexibility of the configuration of the SL-BWP, and further improving the transmission efficiency of the straight-through link communication.

Description

Indication and receiving method of bandwidth segment of straight-through link and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a terminal for indicating and receiving a bandwidth segment of a direct link.

Background

In the existing LTE V2X technology, before a terminal performs a Sidelink communication, the terminal first needs to complete a synchronization process of the direct link, where the synchronization process mainly aims to align time-frequency resources (time domain is Slot alignment; frequency domain is subcarrier alignment) of a transmitting end and a receiving end, and basic parameters of coordinated communication between the transmitting end and the receiving end, including communication bandwidth information. On the other hand, in LTE V2X, since the bandwidth used for user communication is only 6 configurations such as 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz, the above 6 configurations are represented by using 3 bits in the PSBCH (physical direct link broadcast channel) of LTE V2X.

In the NR Uu, the bandwidth used for user communication is configured by BWP (bandwidth fragmentation), the size of the dedicated BWP used for actual communication of the end user may be 1-275 RB, and the actual bandwidth occupied by the same RB is different due to different subcarrier spacing, which is 100MHz maximum for FR1 and 400MHz maximum for FR 2. In order to be able to indicate a dedicated BWP of an arbitrary start position and an arbitrary size, each dedicated BWP of the user configuration requires 16 bits. A BWP configuration of 16 bits may cause very high signaling overhead to the terminal.

Disclosure of Invention

The embodiment of the invention provides a method and a terminal for indicating and receiving a bandwidth segment of a direct link. Configuration information of the SL-BWP may be indicated in the direct link broadcast channel PSBCH.

In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions:

a method for indicating bandwidth segments of a direct link is applied to a terminal, and comprises the following steps:

transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

Optionally, the location information of the SL-BWP is preconfigured, and the bandwidth information of the SL-BWP is configured through the PSBCH; or,

the position information of the SL-BWP is configured through the PSBCH, and the bandwidth information of the SL-BWP is preconfigured; or,

the position information and bandwidth information of the SL-BWP are configured through the PSBCH; or,

the location information and bandwidth information of the SL-BWP are pre-configured.

Optionally, the bandwidth information of the SL-BWP includes at least one of the following:

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

Optionally, the position information and/or bandwidth information of the SL-BWP is configured by N bits of the PSBCH, where N is greater than or equal to 1.

Optionally, each value of the N bits corresponds to at least one row in at least one predefined table; or,

each value of the N bits corresponds to at least one value calculated by at least one predefined formula;

a row in the predefined table or a value in a predefined formula represents the SL-BWP start position, or the bandwidth information, or a combination of the start position and the bandwidth information.

Optionally, the candidate values of the location information and/or the bandwidth information in the predefined table or the predefined formula are interval values, where the interval values refer to partial values of the candidate values including all possible value options.

Optionally, the bandwidth information L in the predefined table or the predefined formula_RBsIs calculated by the maximum bandwidth of SL-BWP

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the position information of the SL-BWP includes: the relative position of the SL-BWP and the S-SSB or reference point a, which refers to the center position of subcarrier number 0 of CRB0 of the carrier in the new wireless NR system.

Optionally, the relative position of the SL-BWP and the S-SSB or the reference point a includes one of:

the S-SSB is positioned at the highest frequency of the frequency band where the SL-BWP is positioned, and the subcarrier with the highest absolute central frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the highest absolute central frequency of the SL-BWP;

the S-SSB is positioned at the middle high frequency of the frequency band where the SL-BWP is positioned, and a subcarrier with the central absolute center frequency of the S-SSB is completely overlapped or partially overlapped with a subcarrier with the central absolute center frequency of the SL-BWP;

the S-SSB is positioned below the lowest frequency of the frequency band where the SL-BWP is positioned, and the subcarrier with the lowest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the lowest absolute center frequency of the SL-BWP.

Optionally, the position information of the SL-BWP includes: a start position or an intermediate position or other preset position of the SL-BWP;

the initial position or the middle position or other preset positions of the SL-BWP are determined according to the relative position offset of the SL-BWP and the S-SSB or the reference point a, where the reference point a is the center position of the subcarrier No. 0 of the CRB0 of the carrier in the new wireless NR system.

Optionally, the offset of the relative position between the SL-BWP and the S-SSB is the number of offset resource blocks RB of the starting position or the middle position of the SL-BWP or other preset positions relative to the starting position or the middle position of the S-SSB or other preset positions;

the relative position offset of the SL-BWP and the reference point A is the offset resource block RB number of the starting position or the middle position or other preset positions of the SL-BWP relative to the reference point A.

Optionally, the frequency band of the SL-BWP includes the frequency band of the S-SSB, and the offset of the relative position includes: the S-SSB is located at the highest frequency, at the middle frequency or at the lowest frequency of the frequency band in which the SL-BWP is located.

Optionally, when the S-SSB is located at the highest frequency of the frequency band where the SL-BWP is located, the subcarrier with the highest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the highest absolute center frequency of the SL-BWP;

when the S-SSB is positioned at the middle frequency of the frequency band where the SL-BWP is positioned, the subcarrier with the centered absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the centered absolute center frequency of the SL-BWP;

and when the S-SSB is positioned at the lowest frequency of the frequency band where the SL-BWP is positioned, the subcarrier with the lowest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the lowest absolute center frequency of the SL-BWP.

Optionally, the preconfigured information or predefined table or predefined formula of the location information and/or bandwidth information of the SL-BWP is determined according to at least one of the following formulas:

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

the maximum number of available resource blocks RB on the carrier where the SL-BWP is located;

optionally, when the predefined table or the predefined formula of the SL-BWP is determined according to the frequency range to which the carrier where the SL-BWP is located belongs,

when the SL-BWP belongs to the first frequency range FR1, corresponds to a first predefined set of tables or a first predefined set of formulas;

when the SL-BWP belongs to the second frequency range FR2, corresponding to a second set of predefined tables or a second set of predefined formulas;

the first predefined set of tables is different from the second predefined set of tables; alternatively, the first set of predefined formulas or the second set of predefined formulas are different.

Optionally, when the predefined table or the predefined formula of the SL-BWP is determined according to the subcarrier spacing SCS of the carrier where the SL-BWP is located,

and when the carrier where the SL-BWP is located is set as different subcarrier intervals SCS, the carrier corresponds to different predefined table groups or predefined formula groups.

Optionally, when the predefined table or the predefined formula of the SL-BWP is determined according to the maximum number of resource blocks RB available on the carrier where the SL-BWP is located,

when the maximum number of available RBs of the carrier where the SL-BWP is located is different, the SL-BWP corresponds to different predefined table groups or predefined formula groups.

The embodiment of the invention also provides a method for receiving the bandwidth fragment of the direct link, which is applied to a terminal and comprises the following steps: receiving a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

An embodiment of the present invention further provides a terminal, including: the processor, the sender, the memorizer, there is the procedure that the said processor can carry out on the said memorizer, the said processor realizes when carrying out the said procedure: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

An embodiment of the present invention further provides a signal transmitting apparatus, including:

a sending module, configured to send a direct link synchronization signal block S-SSB in a timeslot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

An embodiment of the present invention further provides a terminal, including: a processor, a receiver, and a memory, wherein the memory stores a program executable by the processor, and the processor implements the following when executing the program: receiving a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

An embodiment of the present invention further provides a signal receiving apparatus, including:

the receiving module is used for receiving a direct link synchronous signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

Embodiments of the present invention also provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.

The embodiment of the invention has the beneficial effects that:

the above embodiment of the present invention may use limited overhead, and flexibly indicate the start position and bandwidth information of the SL-BWP through a pre-configured manner or through PSBCH, thereby reducing the signaling overhead of the broadcast channel, improving the flexibility of the SL-BWP configuration, and further improving the packet transmission efficiency of the Sidelink communication.

Drawings

Fig. 1 is a flowchart of a signal transmission method according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a transmission flow of SL-BWP information configured by a transmitting-side terminal through the PSBCH according to an embodiment of the present invention;

fig. 3 is a flowchart of a signal receiving method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a terminal on a transmitting side according to an embodiment of the present invention;

fig. 5 is a block diagram of a signal transmitting apparatus according to an embodiment of the present invention;

fig. 6 is a schematic architecture diagram of a terminal on a receiving side according to an embodiment of the present invention;

fig. 7 is a block diagram of a signal receiving apparatus according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a method for indicating a bandwidth segment of a direct link, which is applied to a terminal, and the method includes:

step 11, in the time slot, sending a through link synchronization signal block S-SSB; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

The above embodiment of the present invention flexibly indicates the start position and bandwidth information of the SL-BWP through a pre-configuration mode or through PSBCH, which not only reduces the signaling overhead of the broadcast channel, but also improves the flexibility of the SL-BWP configuration, thereby improving the packet transmission efficiency of the Sidelink communication.

In an optional embodiment of the present invention, the location information of the SL-BWP is preconfigured, and the bandwidth information of the SL-BWP is configured through the PSBCH; or the position information of the SL-BWP is configured through the PSBCH, and the bandwidth information of the SL-BWP is preconfigured; or, the position information and bandwidth information of the SL-BWP are configured through the PSBCH; alternatively, the location information and bandwidth information of the SL-BWP are preconfigured.

Here, the pre-configuration means that the terminal adopts a preset configuration when the terminal leaves the factory, or the terminal receives terminal Profile configuration data sent by the network device to complete the configuration.

Here, the PSBCH configuration refers to configuration performed by at least one of payload information of the PSBCH or demodulation reference signal DMRS information corresponding to the PSBCH.

In an optional embodiment of the present invention, the bandwidth information of the SL-BWP includes at least one of:

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

In an optional embodiment of the present invention, the position information and/or bandwidth information of the SL-BWP is configured by N bits of the PSBCH, where N is greater than or equal to 1.

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

In an alternative embodiment of the present invention, the position information of the SL-BWP includes: the relative position of the SL-BWP and the S-SSB or reference point a, which refers to the center position of subcarrier number 0 of CRB0 of the carrier in the new wireless NR system. Reference Point a here refers to Point a in the protocol.

In an alternative embodiment of the present invention, the relative position of the SL-BWP to the S-SSB or the reference point A comprises one of:

In an alternative embodiment of the present invention, the position information of the SL-BWP includes: a start position or an intermediate position or other preset position of the SL-BWP;

In an optional embodiment of the present invention, the SL-BWP includes an S-SSB band, and the offset of the relative position includes: the S-SSB is located at the highest frequency, at the middle frequency or at the lowest frequency of the frequency band in which the SL-BWP is located.

In an optional embodiment of the invention, the preconfigured information or predefined table or predefined formula of the location information and/or bandwidth information of the SL-BWP is determined according to a predefined formula comprising at least one of:

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

Optionally, according to the "frequency range to which the carrier where the SL-BWP is located" and/or the "subcarrier spacing SCS of the carrier where the SL-BWP is located" and/or the "maximum number of RBs available for the carrier where the SL-BWP is located", a corresponding predefined table group or predefined formula group is selected to determine the starting position and/or bandwidth information of the SL-BWP.

The following describes the implementation process of the above embodiment with reference to specific implementation examples:

the first embodiment: SL-BWP starting position pre-configuration; informing bandwidth information of SL-BWP through PSBCH:

a signal transmission method is applied to a terminal, and comprises the following steps:

transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a direct link physical broadcast channel PSBCH and other information. The PSBCH carries a straight-through link bandwidth fragment (SL-BWP) information, and the SL-BWP information includes position information and/or bandwidth information of the SL-BWP.

The position information of the SL-BWP includes: the relative position of the SL-BWP and the S-SSB or reference point a, which refers to the center position of subcarrier number 0 of CRB0 of the carrier in the new wireless NR system.

The relative position of the SL-BWP to S-SSB or fiducial point A comprises one of:

1) the S-SSB is positioned at the highest frequency of the frequency band where the SL-BWP is positioned, and the subcarrier with the highest absolute central frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the highest absolute central frequency of the SL-BWP;

2) the S-SSB is positioned at the middle high frequency of the frequency band where the SL-BWP is positioned, and a subcarrier with the central absolute center frequency of the S-SSB is completely overlapped or partially overlapped with a subcarrier with the central absolute center frequency of the SL-BWP;

3) the S-SSB is positioned below the lowest frequency of the frequency band where the SL-BWP is positioned, and the subcarrier with the lowest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the lowest absolute center frequency of the SL-BWP.

The position information of the SL-BWP includes: a start position or an intermediate position or other preset position of the SL-BWP;

The relative position of the SL-BWP and the S-SSB or the Point (reference Point) A is fixed or pre-configured, and the starting position of the SL-BWP does not need to be informed in the PSBCH, and only the bandwidth information of the SL-BWP is informed in the PSBCH.

For example, scheme 1: the start position of the SL-BWP is defined by the relative position offset from the S-SSB, such as the S-SSB being located at the top, middle or bottom of the frequency band in which the SL-BWP is located.

The S-SSB is positioned at the top of the frequency band where the SL-BWP is positioned: the subcarrier with the highest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the highest absolute center frequency of the SL-BWP;

the S-SSB is positioned in the middle of the frequency band where the SL-BWP is positioned: the subcarrier centered by the absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier centered by the absolute center frequency of the SL-BWP;

the S-SSB is positioned at the lowest part of the frequency band where the SL-BWP is positioned: the sub-carrier with the lowest absolute center frequency of the S-SSB completely overlaps or partially overlaps with the sub-carrier with the lowest absolute center frequency of the SL-BWP.

Scheme 2: the relative position offset from Point a is used to define the start position of SL-BWP, such as the relative RB offset number of SL-BWP from Point a. Point a refers to the center position of subcarrier No. 0 of CRB0 of a certain carrier in the NR system.

The advantage of this embodiment is that the scheme is simple, there is no need to inform the start position information of the SL-BWP in PSBCH, but only bandwidth information, and the number of bits required is small.

Second embodiment: the SL-BWP starting position and bandwidth are informed by PSBCH:

transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a direct link physical broadcast channel PSBCH and other information. The PSBCH carries a straight-through link bandwidth fragment (SL-BWP) information, including a start position of the SL-BWP and bandwidth information.

The start position of the SL-BWP is notified in the PSBCH in the form of at least 1 bit representing "relative position offset and/or bandwidth information" in the manner of "relative position offset from S-SSB or Point a".

Relative positional offset of SL-BWP from S-SSB: the number of RB (shift register) refers to the shift of the starting position of the SL-BWP relative to the starting position or the middle position or other positions of the S-SSB;

relative positional offset of SL-BWP from Point A: this is the number of RB offsets of the starting position of SL-BWP from Point A.

For example, scheme 1: the start position of the SL-BWP is notified in the PSBCH in the form of at least 1 bit indicating "relative position offset and/or bandwidth information" in the manner of "relative position offset from S-SSB". The frequency band of the SL-BWP includes the frequency band of the S-SSB, and the "relative position offset from the S-SSB" includes three cases: the S-SSB is located at the top, middle or bottom of the frequency band where the SL-BWP is located.

the S-SSB is positioned at the lowest part of the frequency band where the SL-BWP is positioned: the subcarrier with the lowest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with the subcarrier with the lowest absolute center frequency of the SL-BWP;

scheme 2: the start position of the SL-BWP is notified in the PSBCH in the form of at least 1 bit indicating "relative position offset and/or bandwidth information" in the manner of "relative position offset from Point a". The relative position offset from Point a is used to define the start position of SL-BWP, such as the relative RB offset number of SL-BWP from Point a. Point a refers to the center position of subcarrier No. 0 of CRB0 of a certain carrier in the NR system.

The advantage of this embodiment is that since the starting position and bandwidth information of the SL-BWP are informed by using PSBCH, the scheme informs a lot of information, and the configuration of the SL-BWP is flexible.

Third embodiment, predefined table:

The starting position and/or bandwidth information of the SL-BWP are carried by PSBCH in a mode of N bits (N is more than or equal to 1), each possible value of the N bits corresponds to at least one row in at least one predefined table, and one row in the predefined table represents a combination of the starting position and the bandwidth information of the SL-BWP.

Scheme 1: n-4, 16 combinations of SL-BWP start position and bandwidth information:

such as: when N is 4 bits is 0110, Index is 6, and as can be seen from the above table, the bandwidth information of the SL-BWP corresponding to Index is 6 is 48 RBs, the start position of the SL-BWP is a relative offset of 36 RBs, the above information indicates that the SL-BWP occupies 48 RBs, and the relative offset with respect to the S-SSB or Point a is 36 RBs, so that the start position and the bandwidth information of the SL-BWP can be obtained.

Scheme 2: n is 5, 32 combinations of SL-BWP start position and bandwidth information:

such as: when N is 10010 bits, Index is 18, and as can be seen from the above table, the bandwidth information of the SL-BWP corresponding to Index is 18 is 84 RBs, the start position of the SL-BWP is the relative offset of 72 RBs, the above information indicates that the SL-BWP occupies 84 RBs, and the relative offset with respect to the S-SSB or Point a is 72 RBs, so that the start position and the bandwidth information of the SL-BWP can be obtained.

Fourth embodiment, the formula is predefined:

transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a direct link physical broadcast channel PSBCH and other information. The PSBCH carries a straight-through link bandwidth fragment (SL-BWP) information, including a start position and/or bandwidth information of the SL-BWP.

The starting position and/or bandwidth information of the SL-BWP are carried by a PSBCH in an N-bit mode (N is more than or equal to 1), each possible value of the N bits corresponds to at least one value calculated by at least one predefined formula, and one value in the predefined formula represents a combination of the starting position and/or bandwidth information of the SL-BWP.

Representing the maximum bandwidth available for through-link communications (in number of RBs) with a maximum value less than 275. LRBs indicate the bandwidth information of the SL-BWP, and RBstart indicates the offset of the starting position of the SL-BWP with respect to the S-SSB or Point A. The RIV indicates an index value corresponding to a combination of a pair of LRBs and RBstart calculated from the LRBs and RBstart. The receiving side can calculate the values of LRBs and RBstart according to the RIV value.

When in use

The method comprises the following steps:

otherwise:

wherein L_RBsNot less than 1 and a value of not more than

And possible values of LRBs are not consecutive to reduce signaling overhead, e.g. LRBs only take 5 values, respectively

The RBstart is also not continuous, also to reduce signaling overhead.

Fifth embodiment, a plurality of predefined tables:

The starting position and/or bandwidth information of the SL-BWP are carried by the PSBCH in a mode of N bits (N is more than or equal to 1), each possible value of the N bits respectively corresponds to a row in a predefined table group 1 and a predefined table group 2, and each row in each predefined table represents a combination of the starting position and/or bandwidth information of the SL-BWP.

FR1 refers to the frequency range 1, typically the lower frequency band below 6 GHz. FR2 refers to the frequency range 2, typically the millimeter wave band. When SL-BWP belongs to FR1, corresponds to predefined table set 1; when SL-BWP belongs to FR2, corresponds to predefined table set 2; the predefined table set 1 is different from the predefined table set 2. Thus, different table groups can be defined according to different frequency band ranges, and different SL-BWP starting positions and/or value combinations of bandwidth information are defined for low frequency and high frequency. Such as: in FR1 low band, the number of combinations can be smaller due to smaller bandwidth, and in FR2 high band, the number of combinations can be larger due to wider bandwidth.

This embodiment has the advantage that since different predefined table sets are used for FR1 and FR2, two different sets of combined tables of SL-BWP start position and/or bandwidth information can be defined for FR1 and FR2, the scheme is informed more and the configuration of SL-BWP is more flexible. The disadvantages are that the required bit number is large, and the PSBCH signaling overhead is large.

Sixth embodiment, a plurality of predefined formulas:

The starting position and/or bandwidth information of the SL-BWP are carried by the PSBCH in a mode of N bits (N is more than or equal to 1), each possible value of the N bits respectively corresponds to a row in a predefined formula group 1 and a predefined formula group 2, and each value in each predefined formula represents a combination of the starting position and/or bandwidth information of the SL-BWP.

FR1 refers to the frequency range 1, typically the lower frequency band below 6 GHz. FR2 refers to the frequency range 2, typically the millimeter wave band. When SL-BWP belongs to FR1, corresponds to predefined formula set 1; when SL-BWP belongs to FR2, corresponds to predefined formula set 2; the predefined formula set 1 is different from the predefined formula set 2. Thus, different formula sets can be defined according to different frequency band ranges, and different SL-BWP starting positions and/or value combinations of bandwidth information are defined for low frequency and high frequency. Such as: in FR1 low band, the number of combinations can be smaller due to smaller bandwidth, and in FR2 high band, the number of combinations can be larger due to wider bandwidth.

The advantage of this embodiment is that since different predefined formula sets are used for FR1 and FR2, two different sets of combined values of the SL-BWP start position and/or bandwidth information can be defined for FR1 and FR2, the scheme informs more information, and the configuration of the SL-BWP is more flexible. The disadvantages are that the required bit number is large, and the PSBCH signaling overhead is large.

In a seventh embodiment, different subcarrier spacings correspond to different sets of tables or equations:

when the carrier where the SL-BWP is located is set as different subcarrier spacing SCS, the SL-BWP corresponds to different predefined table groups or predefined formula groups. Such as: when the subcarrier interval of the carrier where the SL-BWP is located is set to be 15KHz, the SL-BWP corresponds to a predefined table group 1 or a predefined formula group 1; when the subcarrier interval of the carrier where the SL-BWP is located is set to be 30KHz, the SL-BWP corresponds to a predefined table group 2 or a predefined formula group 2; when the subcarrier interval of the carrier where the SL-BWP is located is set to be 60KHz, the SL-BWP corresponds to a predefined table group 3 or a predefined formula group 4; when the subcarrier spacing of the carrier where the SL-BWP is located is set to 120KHz, the predefined table group 4 or the predefined formula group 4 is corresponded.

The advantage of this embodiment is that since different predefined formula sets are used for different subcarrier intervals, multiple sets of different combined values of SL-BWP start positions and/or bandwidth information can be defined for different subcarrier intervals, the scheme informs more information, and the configuration of SL-BWP is more flexible. The disadvantages are that the required bit number is large, and the PSBCH signaling overhead is large.

An eighth embodiment selects the corresponding table according to three factors:

and selecting a corresponding predefined table group or a predefined formula group to determine the starting position and/or the bandwidth information of the SL-BWP according to the frequency range of the carrier where the SL-BWP is located and/or the subcarrier spacing SCS of the carrier where the SL-BWP is located and/or the number of maximum available RBs of the carrier where the SL-BWP is located.

Such as: when the frequency range to which the carrier on which the SL-BWP belongs is FR1, the subcarrier spacing SCS of the carrier on which the SL-BWP belongs is 15KHz, and the number of maximum available RBs of the carrier on which the SL-BWP belongs is 12RB, the predefined table group 1 is selected to determine the start position and/or bandwidth information of the SL-BWP. The determination method is to obtain the start position and/or bandwidth information of the SL-BWP in the PSBCH by looking up the table. When the "frequency range to which the carrier where the SL-BWP belongs is FR 1", the "subcarrier spacing SCS of the carrier where the SL-BWP belongs is 30 KHz" and the "number of maximum available RBs of the carrier where the SL-BWP belongs is 50 RB", the predefined table group 2 is selected to determine the start position and/or bandwidth information of the SL-BWP. When the "frequency range to which the carrier where the SL-BWP belongs is FR 2", the "subcarrier spacing SCS of the carrier where the SL-BWP belongs is 60 KHz" and the "number of maximum available RBs of the carrier where the SL-BWP belongs is 100 RB", the predefined table group 3 is selected to determine the start position and/or bandwidth information of the SL-BWP. As shown in the following table:

the advantage of this embodiment is that different predefined table sets are used for different "frequency range the carrier of SL-BWP belongs to" and/or "subcarrier spacing SCS of the carrier of SL-BWP" and/or "number of maximum available RBs of the carrier of SL-BWP", so that multiple sets of different SL-BWP starting positions and/or bandwidth information can be defined for different situations, the scheme informs more information, and the configuration of SL-BWP is more flexible. The first to eighth embodiments are merely illustrative and are not intended to limit the scope of the present invention.

As shown in fig. 3, an embodiment of the present invention further provides a method for receiving a bandwidth segment of a direct link, where the method is applied to a terminal, and the method includes:

step 31, receiving a direct link synchronization signal block S-SSB in a timeslot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP. Here, the pre-configuration means that the terminal adopts a preset configuration when the terminal leaves the factory, or the terminal receives terminal Profile configuration data sent by the network device to complete the configuration.

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the position information of the SL-BWP includes: the relative position of SL-BWP and S-SSB or Point a, where Point a refers to the center position of subcarrier number 0 of CRB0 of the carrier in the new wireless NR system.

Optionally, the relative position of the SL-BWP and the S-SSB or Point a includes one of:

the initial position or the middle position or other preset positions of the SL-BWP are determined according to the relative position offset between the SL-BWP and the S-SSB or the Point a, where the Point a is the center position of the subcarrier No. 0 of the CRB0 of the carrier in the new wireless NR system.

and the relative position offset of the SL-BWP and the Point A is the number of offset resource blocks RB of the starting position or the middle position or other preset positions of the SL-BWP relative to the Point A.

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

It should be noted that the contents of the first to eighth embodiments are all applied to this embodiment, and the same technical effects can be achieved.

As shown in fig. 4, an embodiment of the present invention further provides a terminal 40, including: a processor 42, a transmitter 41, and a memory 43, wherein the memory 43 stores a program executable by the processor 42, and the processor 42 implements the following when executing the program: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP. Here, the pre-configuration means that the terminal adopts a preset configuration when the terminal leaves the factory, or the terminal receives terminal Profile configuration data sent by the network device to complete the configuration.

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

It should be noted that the terminal is a terminal corresponding to the method of the transmitting terminal shown in fig. 1, and all the implementation manners in the above method embodiment are applicable to the terminal, and the same technical effect can be achieved. In this terminal, the transmitter 41 and the memory 43, and the transmitter 41 and the processor 42 may be communicatively connected by a bus interface, and the function of the processor 42 may be realized by the transmitter 41, and the function of the transmitter 41 may be realized by the processor 42.

As shown in fig. 5, an embodiment of the present invention further provides a signal transmitting apparatus 50, including:

a sending module 51, configured to send a direct link synchronization signal block S-SSB in a timeslot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP. Here, the pre-configuration means that the terminal adopts a preset configuration when the terminal leaves the factory, or the terminal receives terminal Profile configuration data sent by the network device to complete the configuration.

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

It should be noted that this apparatus is an apparatus corresponding to the method of the transmitting-side terminal shown in fig. 1, and all the implementations of the above method embodiment are applicable to this apparatus, and the same technical effects can be achieved. The device may further include a processing module 52, configured to process the information sent by the sending module 51.

As shown in fig. 6, an embodiment of the present invention further provides a terminal 60, including: a processor 62, a receiver 61, and a memory 63, wherein the memory 63 stores programs executable by the processor 62, and the processor 62 implements the following when executing the programs: receiving a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP. Here, the pre-configuration means that the terminal adopts a preset configuration when the terminal leaves the factory, or the terminal receives terminal Profile configuration data sent by the network device to complete the configuration.

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

It should be noted that the terminal is a terminal corresponding to the method of the receiving-side terminal shown in fig. 3, and all the implementations of the method embodiments described above are applicable to the terminal, and the same technical effects can be achieved. In the terminal 60, the receiver 61 and the memory 63, and the receiver 61 and the processor 62 may be communicatively connected through a bus interface, and the function of the processor 62 may also be implemented by the transceiver 61, and the function of the receiver 61 may also be implemented by the processor 62.

As shown in fig. 7, the embodiment of the present invention further provides a signal receiving apparatus 70, including:

a receiving module 71, configured to receive a through link synchronization signal block S-SSB in a timeslot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP. Here, the pre-configuration means that the terminal adopts a preset configuration when the terminal leaves the factory, or the terminal receives terminal Profile configuration data sent by the network device to complete the configuration.

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

Optionally, the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

The apparatus 70 is an apparatus corresponding to the method of the receiving-side terminal shown in fig. 3, and all the implementations of the method embodiments described above are applicable to the terminal, so that the same technical effects can be achieved. The apparatus 70 may further comprise a processing module 72 for processing the information received by the receiving module 71, and the like.

Embodiments of the present invention also provide a computer storage medium including instructions that, when executed on a computer, cause the computer to perform the method of the embodiments described above with respect to fig. 1 or fig. 3.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

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.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention 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 functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A method for indicating bandwidth segments of a direct link, which is applied to a terminal, includes:

2. The method of indicating bandwidth segments of a through-link according to claim 1,

the position information of the SL-BWP is pre-configured, and the bandwidth information of the SL-BWP is configured through the PSBCH; or,

3. The method of claim 1, wherein the bandwidth information of the SL-BWP comprises at least one of the following conditions:

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

4. The method of claim 2, wherein the position information and/or bandwidth information of the SL-BWP are configured by N bits of the PSBCH, and N is greater than or equal to 1.

5. The method for indicating bandwidth segments of a through-link according to claim 4,

each value of the N bits corresponds to at least one row in at least one predefined table; or,

6. The method for indicating bandwidth segments of a through-link according to claim 5,

and the interval value of the candidate values of the position information and/or the bandwidth information in the predefined table or the predefined formula refers to that the candidate values comprise partial values in all possible value options.

7. The method for indicating bandwidth segments of a through-link according to claim 6,

bandwidth information L in the predefined table or predefined formula_RBsIs calculated by the maximum bandwidth of SL-BWP

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

8. The method for indicating bandwidth segments of a through-link according to claim 7,

the bandwidth information L_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

9. The method of indicating the bandwidth segment of the through-link according to claim 1, wherein the location information of the SL-BWP comprises: the relative position of the SL-BWP and the S-SSB or reference point a, which refers to the center position of subcarrier number 0 of CRB0 of the carrier in the new wireless NR system.

10. The method of claim 9, wherein the relative position of the SL-BWP to the S-SSB or to reference point a comprises one of:

11. The method of indicating the bandwidth segment of the through-link according to claim 1, wherein the location information of the SL-BWP comprises: a start position or an intermediate position or other preset position of the SL-BWP;

12. The method of indicating bandwidth segments for a through-link of claim 11,

the relative position offset of the SL-BWP and the S-SSB is the number of offset resource blocks RB of the starting position or the middle position or other preset positions of the SL-BWP relative to the starting position or the middle position or other preset positions of the S-SSB;

13. The method according to claim 12, wherein the SL-BWP includes an S-SSB band, and the relative position offset includes: the S-SSB is located at the highest frequency, at the middle frequency or at the lowest frequency of the frequency band in which the SL-BWP is located.

14. The method according to claim 13, wherein when the S-SSB is located at the highest frequency of the SL-BWP, the subcarrier with the highest absolute center frequency of the S-SSB completely overlaps or partially overlaps the subcarrier with the highest absolute center frequency of the SL-BWP;

15. Method for indicating bandwidth segments of a through-link according to claim 1, wherein the preconfigured information or predefined table or predefined formula of the location information and/or bandwidth information of the SL-BWP is determined according to at least one of the following:

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

the maximum number of resource blocks RB available on the carrier on which the SL-BWP is located.

16. The method for indicating bandwidth segments of a through-link according to claim 15, wherein when the predefined table or the predefined formula of the SL-BWP is determined according to a frequency range to which a carrier on which the SL-BWP belongs,

17. The method for indicating bandwidth segment of through-link according to claim 15, wherein when the predefined table or the predefined formula of SL-BWP is determined according to the sub-carrier spacing SCS of the carrier on which SL-BWP is located,

18. The method of claim 15, wherein when the predefined table or formula of the SL-BWP is determined according to the maximum number of Resource Blocks (RBs) available on the carrier on which the SL-BWP is located,

19. A receiving method of a bandwidth segment of a direct link is applied to a terminal, and the method comprises the following steps:

receiving a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

20. The method of receiving a bandwidth fragment of a through-link according to claim 19, wherein the location information of the SL-BWP is preconfigured, and the bandwidth information of the SL-BWP is configured through the PSBCH; or,

21. The method of receiving a bandwidth fragment of a through-link according to claim 19, wherein the bandwidth information of the SL-BWP includes at least one of:

case of 11 resource blocks RB;

case of 12 resource blocks RB;

the maximum number of resource blocks RB available on that carrier.

22. The method of claim 20, wherein N is greater than or equal to 1 according to N-bit configuration of the PSBCH for the position information and/or bandwidth information of the SL-BWP.

23. The method for receiving a bandwidth segment of a direct link according to claim 22, wherein each value of the N bits corresponds to at least one row in at least one predefined table; or,

24. The method of receiving a bandwidth segment of a direct link according to claim 23, wherein the candidate values of the position information and/or the bandwidth information in the predefined table or the predefined formula are interval values, and the interval values refer to partial values of the candidate values including all possible value options.

25. The method for receiving bandwidth segments of a through link according to claim 24, wherein the bandwidth information L in the predefined table or predefined formula_RBsIs calculated by the maximum bandwidth of SL-BWP

The value of the 1/M interval of (c),

wherein ,

represents the maximum bandwidth of SL-BWP, M is greater than 1 and less than

Is a positive integer of (1).

26. According to the rightThe method for receiving a bandwidth segment of a direct link according to claim 25, wherein the bandwidth information L is_RBsThe candidate values of (a) are:

wherein

Maximum bandwidth, operator for SL-BWP

Meaning that X is rounded down, M is greater than 1 and less than

Is a positive integer of (1).

27. The method of receiving a bandwidth segment of a through-link according to claim 19, wherein the location information of the SL-BWP comprises: the relative position of the SL-BWP and the S-SSB or reference point a, which refers to the center position of subcarrier number 0 of CRB0 of the carrier in the new wireless NR system.

28. The method of receiving a bandwidth segment of a through-link of claim 27, wherein the relative position of the SL-BWP to the S-SSB or to reference point a comprises one of:

29. The method of receiving a bandwidth segment of a through-link according to claim 19, wherein the location information of the SL-BWP comprises: a start position or an intermediate position or other preset position of the SL-BWP;

30. The method for receiving the bandwidth segment of the through link according to claim 29, wherein the offset amount of the relative position of the SL-BWP and the S-SSB is an offset number of resource blocks RB of the starting position or the middle position of the SL-BWP or other preset positions relative to the starting position or the middle position of the S-SSB or other preset positions;

31. The method for receiving the bandwidth segment of the through link according to claim 30, wherein the SL-BWP includes an S-SSB, and the relative position offset includes: the S-SSB is located at the highest frequency, at the middle frequency or at the lowest frequency of the frequency band in which the SL-BWP is located.

32. The method of receiving the bandwidth segment of the through-link according to claim 31, wherein when the S-SSB is located at the highest frequency of the SL-BWP, the subcarrier with the highest absolute center frequency of the S-SSB completely overlaps or partially overlaps the subcarrier with the highest absolute center frequency of the SL-BWP;

33. The method of receiving a bandwidth segment of a through-link according to claim 19, wherein the preconfigured information or predefined table or predefined formula of the position information and/or bandwidth information of the SL-BWP is determined according to at least one of the following:

the frequency range of the carrier where the SL-BWP is located;

the subcarrier interval SCS of the carrier where the SL-BWP is located;

34. The method for receiving bandwidth segments of a direct link according to claim 33, wherein when the predefined table or the predefined formula of the SL-BWP is determined according to the frequency range of the carrier where the SL-BWP belongs,

35. The method for receiving bandwidth segments of a through-link according to claim 33, wherein when the predefined table or the predefined formula of the SL-BWP is determined according to the sub-carrier spacing SCS of the carrier on which the SL-BWP is located,

36. The method for receiving the bandwidth segment of the through-link according to claim 33, wherein when the predefined table or the predefined formula of the SL-BWP is determined according to the maximum number of resource blocks RB available on the carrier on which the SL-BWP is located,

37. A terminal, comprising: the processor, the sender, the memorizer, there is the procedure that the said processor can carry out on the said memorizer, the said processor realizes when carrying out the said procedure: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

38. An apparatus for transmitting a signal, comprising:

39. A terminal, comprising: a processor, a receiver, and a memory, wherein the memory stores a program executable by the processor, and the processor implements the following when executing the program: receiving a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a direct link physical broadcast channel (PSBCH), and the SL-BWP information is configured in a pre-configuration mode or through the PSBCH, and comprises the position information and/or the bandwidth information of the SL-BWP.

40. An apparatus for receiving a signal, comprising:

41. A computer storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 18 or the method of any of claims 19 to 36.