CN112566279B

CN112566279B - Indication and receiving method and terminal for bandwidth segments of direct link

Info

Publication number: CN112566279B
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: 2023-10-20
Anticipated expiration: 2039-09-26
Also published as: CN112566279A

Abstract

The invention discloses an indication and receiving method and a terminal of a bandwidth segment of a direct link. The method for indicating the bandwidth segments of the through link comprises the following steps: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH. The proposal of the invention can indicate the configuration information of SL-BWP in the PSBCH of the through link broadcast channel, thereby reducing the signaling overhead of the broadcast channel, improving the flexibility of SL-BWP configuration and further improving the transmission efficiency of the through link communication.

Description

Indication and receiving method and terminal for bandwidth segments of direct link

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 the terminal performs the direct link Sidelink communication, the synchronization process of the direct link is first completed, and the main purpose of the synchronization process is to align time-frequency resources of the transmitting end and the receiving end (the time domain is Slot alignment; the frequency domain is subcarrier alignment), and coordinate basic communication parameters of the transmitting and receiving parties, including communication bandwidth information. In LTE V2X, the bandwidth used for user communication is only 6 configurations such as 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz, so 3 bits are used in PSBCH (physical through link broadcast channel) of LTE V2X to represent the above 6 configurations.

In NR Uu, the bandwidth used for user communication is configured in a BWP (bandwidth segment) manner, and the size of the dedicated BWP used for actual communication by the end user may be 1-275 RB, which varies with the subcarrier spacing, resulting in a difference in actual bandwidth occupied by the same RB, for FR1 up to 100MHz and for FR2 up to 400MHz. In order to be able to indicate a dedicated BWP of any starting position and of any size, each dedicated BWP configured by the user requires 16 bits. A BWP configuration of 16 bits would incur a very high signaling overhead for the terminal.

Disclosure of Invention

The embodiment of the invention provides an indication and receiving method and a terminal of a bandwidth fragment of a direct link. The configuration information of the SL-BWP may be indicated in the through link broadcast channel PSBCH.

In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:

a method for indicating a bandwidth segment of a through link, applied to a terminal, the method comprising:

transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH.

Optionally, the location information of the SL-BWP is preconfigured, and bandwidth information of the SL-BWP is configured through the PSBCH; or alternatively, the process may be performed,

the location information of the SL-BWP is configured through the PSBCH, and the bandwidth information of the SL-BWP is preconfigured; or alternatively, the process may be performed,

the location information and bandwidth information of the SL-BWP are configured through the PSBCH; or alternatively, the process may be performed,

the location information and bandwidth information of the SL-BWP are preconfigured.

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

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

Optionally, the location information and/or bandwidth information of the SL-BWP is configured through N bits of the PSBCH, wherein N is more 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 alternatively, the process may be performed,

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

one of the row in the predefined table or one of the predefined formulas takes a value representing 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 valued, and the interval valued refers to that the candidate values comprise part of all possible valued options.

Optionally, bandwidth information L in the predefined form or the predefined formula _RBs With the maximum bandwidth of SL-BWPTakes on the value of 1/M interval,/for>

wherein ,representing the maximum bandwidth of SL-BWP, M is greater than 1 and less than +.>Is a positive integer of (a).

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

wherein Representing the maximum bandwidth of SL-BWP, operator +.>Representing a lower rounding operation on X, M is greater than 1 and less than +.>Is a positive integer of (a).

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

Optionally, the relative position of the SL-BWP and the S-SSB or the reference point A comprises one of the following:

the S-SSB is positioned at the highest frequency of the frequency band of the SL-BWP, and 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 at the middle high frequency of the frequency band of the SL-BWP, and 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;

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 location information of the SL-BWP includes: a starting position or an intermediate position or other preset positions of the SL-BWP;

the starting 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 a reference point A, wherein the reference point A refers to the center position of a sub-carrier No. 0 of CRB0 of a carrier in a new wireless NR system.

Optionally, the relative position offset between 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;

the relative position offset between the SL-BWP and the reference point a is the number of offset resource blocks RB of the starting position or the middle position of the SL-BWP or other preset positions with respect to the reference point a.

Optionally, the frequency band of the SL-BWP includes a frequency band of the S-SSB, and the relative position offset includes: the S-SSB is located at the highest frequency, at the intermediate 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;

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:

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

the maximum number of resource blocks, RBs, available on the carrier on which SL-BWP is located;

Optionally, when the predefined form or the predefined formula of the SL-BWP is determined according to the frequency range to which the carrier wave in which the SL-BWP belongs,

when the SL-BWP belongs to the first frequency range FR1, it corresponds to a first predefined table group or a first predefined formula group;

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

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

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

when the carrier wave where the SL-BWP is located is set to be different sub-carrier wave intervals SCS, the carrier wave corresponds to different predefined form groups or predefined formula groups.

Optionally, the predefined table or predefined formula of the SL-BWP is determined according to a maximum number of resource blocks RBs available on the carrier on which the SL-BWP is located,

and when the maximum number of available RBs of the carrier wave where the SL-BWP is positioned is different, the different predefined form groups or the predefined formula groups are corresponding.

The embodiment of the invention also provides a receiving method of the bandwidth segment of the through link, which is applied to the terminal, and comprises the following steps: in a time slot, receiving a through link synchronization signal block S-SSB; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH.

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

The embodiment of the invention also provides a terminal, which comprises: a processor, a transmitter, and a memory, where the memory stores a program executable by the processor, and when the processor executes the program, the processor realizes: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH.

The embodiment of the invention also provides a signal sending device, which comprises:

a transmitting module, configured to transmit a direct link synchronization signal block S-SSB in a time slot; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH.

The embodiment of the invention also provides a terminal, which comprises: a processor, a receiver, and a memory, where the memory stores a program executable by the processor, and when the processor executes the program, the processor realizes: in a time slot, receiving a through link synchronization signal block S-SSB; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH.

The embodiment of the invention also provides a signal receiving device, which comprises:

a receiving module, configured to receive, in a time slot, a direct link synchronization signal block S-SSB; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH.

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

The embodiment of the invention has the beneficial effects that:

the embodiment of the invention can flexibly indicate the starting position and bandwidth information of SL-BWP by using limited overhead in a pre-configuration mode or PSBCH, thereby reducing the signaling overhead of a broadcast channel, improving the flexibility of SL-BWP configuration and further improving the packet transmission efficiency of 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 of a transmission flow of configuring a direct link bandwidth segment SL-BWP information 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 architecture diagram of a transmitting-side terminal according to an embodiment of the present invention;

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

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

fig. 7 is a schematic 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 present invention are shown in the drawings, it should be understood that the present invention may 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 through link, which is applied to a terminal, and the method includes:

step 11, in the time slot, transmitting a through link synchronous signal block S-SSB; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH.

According to the embodiment of the invention, the starting position and bandwidth information of the SL-BWP are flexibly indicated in a preconfigured mode or by the PSBCH, so that the signaling overhead of a broadcast channel is reduced, the flexibility of the SL-BWP configuration is improved, and the packet transmission efficiency of the Sidelink communication is further improved.

In an alternative 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; alternatively, the location information of the SL-BWP is configured by the PSBCH, and the bandwidth information of the SL-BWP is preconfigured; or, the location 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 refers to that the terminal adopts a pre-set configuration when leaving the factory, or the terminal receives terminal Profile configuration data sent by the network device, so as to complete configuration.

Here, the configuration by the PSBCH means that at least one of payload information of the PSBCH or DMRS information of a demodulation reference signal corresponding to the PSBCH is configured.

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

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

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

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

In an alternative embodiment of the present invention, the location information of the SL-BWP includes: the relative position of the SL-BWP and the S-SSB or a reference point A, wherein the reference point A refers to the center position of a sub-carrier 0 of CRB0 of a carrier in a 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 and the S-SSB or reference point A includes one of the following:

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

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

In an alternative embodiment of the present invention, the pre-configured information or the pre-defined table or the pre-defined formula of the location information and/or the bandwidth information of the SL-BWP is determined according to at least one of the following:

The carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

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

The implementation procedure of the above embodiment is described below with reference to specific implementation examples:

first embodiment: pre-configuring SL-BWP starting position; the bandwidth information of SL-BWP is notified through PSBCH:

a signal transmission method, applied to a terminal, the method comprising:

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

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

The relative position of the SL-BWP and the S-SSB or the reference point A comprises one of the following:

1) The S-SSB is positioned at the highest frequency of the frequency band of the SL-BWP, and 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;

2) The S-SSB is positioned at the middle high frequency of the frequency band of the SL-BWP, and 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;

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 location information of the SL-BWP includes: a starting position or an intermediate position or other preset positions of the SL-BWP;

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

For example, scheme 1: the starting position of the SL-BWP is defined by a relative position offset from the S-SSB, e.g. the S-SSB is located at the uppermost, intermediate or lowermost position of the frequency band in which the SL-BWP is located.

The S-SSB is located at the uppermost part of the frequency band where 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;

S-SSB is located in the middle of the frequency band where SL-BWP is located: the subcarriers centered on the absolute center frequency of the S-SSB are completely overlapped or partially overlapped with the subcarriers centered on the absolute center frequency of the SL-BWP;

S-SSB is located at the lowest frequency band of SL-BWP: the lowest absolute center frequency subcarrier of the S-SSB overlaps completely or partially with the lowest absolute center frequency subcarrier 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 and Point a. Point A is the center position of subcarrier 0 of CRB0 of a carrier in the NR system.

The advantage of this embodiment is that the scheme is simple, the starting position information of SL-BWP need not be informed in PSBCH, but only bandwidth information needs to be informed, and the number of bits needed is relatively small.

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

a signal transmission method, applied to a terminal, the method comprising:

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

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

Relative positional offset of SL-BWP and S-SSB: refers to the number of offset RBs of the starting position of SL-BWP with respect to the starting position or intermediate position or other positions of S-SSB;

relative positional offset of SL-BWP and Point A: refers to the number of offset RBs of the start position of SL-BWP with respect to Point A.

For example, scheme 1: the start position of the SL-BWP is informed in the form of at least 1 bit representing the "relative position offset and/or bandwidth information" in the PSBCH in the form of the "relative position offset from the S-SSB". The frequency band in which the SL-BWP is located includes the frequency band in which the S-SSB is located, and the "relative positional offset from the S-SSB" includes three cases: the S-SSB is located at the uppermost, middle or lowermost part of the band in which the SL-BWP is located.

S-SSB is located at the lowest frequency band of SL-BWP: 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 informed in the form of at least 1 bit representing the "relative position offset and/or bandwidth information" in the PSBCH in the form of the "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 and Point a. Point A is the center position of subcarrier 0 of CRB0 of a carrier in the NR system.

The advantage of this embodiment is that since the starting position of the SL-BWP and the bandwidth information are signaled using the PSBCH, the scheme informs much more information and the configuration of the SL-BWP is flexible.

In a third embodiment, the table is predefined:

a signal transmission method, applied to a terminal, the method comprising:

The starting position and/or bandwidth information of the SL-BWP is carried by the PSBCH in N bits (N.gtoreq.1), each possible value of the N bits corresponding to at least one row of at least one predefined table, one row of the predefined table representing a combination of the starting position and the bandwidth information of the SL-BWP.

Scheme 1: n=4, combination of 16 SL-BWP start positions and bandwidth information:

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

Scheme 2: n=5, combination of 32 SL-BWP start positions and bandwidth information:

such as: when n=5 bits are 10010, index=18, and it can be seen from the above table that the bandwidth information of SL-BWP corresponding to index=18 is 84 RBs, the starting position of SL-BWP is the relative offset of 72 RBs, the above information indicates that SL-BWP occupies 84 RBs, and the relative offset with respect to S-SSB or Point a is 72 RBs, so that the starting position and bandwidth information of SL-BWP can be obtained.

In a fourth embodiment, the formula is predefined:

a signal transmission method, applied to a terminal, the method comprising:

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

The starting position and/or bandwidth information of the SL-BWP is carried by the PSBCH in N bits (N is equal to or greater than 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.

Indicating the maximum bandwidth (in number of RBs) available for through link communication, which is less than 275.LRBs represent bandwidth information of SL-BWP, and RBstart represents an offset of a start position of SL-BWP with respect to S-SSB or Point a. RIV represents 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 (when)When (1):

otherwise:

wherein L_RBs 1 and its value is not greater than

And the possible values of LRBs are not continuous to reduce signaling overhead, e.g., LRBs take only 5 values, respectively RBstart is not continuous, nor to reduce signaling overhead.

A fifth embodiment, a plurality of predefined forms:

a signal transmission method, applied to a terminal, the method comprising:

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

FR1 refers to frequency range 1 and generally refers to the low frequency range of 6GHz or less. FR2 refers to frequency range 2 and generally to the millimeter wave band. When SL-BWP belongs to FR1, it corresponds to predefined form group 1; when SL-BWP belongs to FR2, it corresponds to the predefined table group 2; the predefined form group 1 is different from the predefined form group 2. In this way, different table sets can be defined according to different frequency ranges, and different SL-BWP starting positions and/or value combinations of bandwidth information can be defined for low frequency and high frequency. Such as: in the FR1 low frequency band, the number of combinations can be smaller due to the smaller bandwidth, and in the FR2 high frequency band, the number of combinations can be larger due to the wider bandwidth.

An advantage of this embodiment is 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, more information is signaled by the scheme, and the configuration of SL-BWP is more flexible. The disadvantage is that the number of bits required is relatively large and the PSBCH signaling overhead is relatively large.

A sixth embodiment, a plurality of predefined formulas:

a signal transmission method, applied to a terminal, the method comprising:

The starting position and/or bandwidth information of the SL-BWP is carried by the PSBCH in an N-bit mode (N is equal to or greater than 1), each possible value of the N bits corresponds to a respective row in a predefined formula group 1 and a predefined formula group 2 respectively, 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 frequency range 1 and generally refers to the low frequency range of 6GHz or less. FR2 refers to frequency range 2 and generally to the millimeter wave band. When SL-BWP belongs to FR1, it corresponds to predefined formula set 1; when SL-BWP belongs to FR2, it corresponds to predefined formula set 2; the set of predefined formulas 1 is different from the set of predefined formulas 2. In this way, different formula sets can be defined according to different frequency 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 the FR1 low frequency band, the number of combinations can be smaller due to the smaller bandwidth, and in the FR2 high frequency band, the number of combinations can be larger due to the wider bandwidth.

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

A seventh embodiment, different subcarrier spacings correspond to different table sets or formula sets:

when the carrier where the SL-BWP is located is set to different subcarrier spacings SCS, different sets of the predefined table or the predefined formula will be corresponding. Such as: when the subcarrier spacing of the carrier where SL-BWP is located is set to 15KHz, the subcarrier spacing corresponds to a predefined form group 1 or a predefined formula group 1; when the subcarrier spacing of the carrier where the SL-BWP is located is set to 30KHz, the subcarrier spacing corresponds to a predefined form group 2 or a predefined formula group 2; when the subcarrier spacing of the carrier where SL-BWP is located is set to 60KHz, the subcarrier spacing corresponds to the predefined form group 3 or the predefined formula group 4; when the subcarrier spacing of the carrier on which the SL-BWP is located is set to 120KHz, it corresponds to the predefined table set 4 or the predefined formula set 4.

The embodiment has the advantages that as different predefined formula sets are used for different subcarrier intervals, a plurality of sets of different SL-BWP starting positions and/or bandwidth information combination values can be defined for different subcarrier intervals, the information of scheme notification is more, and the configuration of SL-BWP is more flexible. The disadvantage is that the number of bits required is relatively large and the PSBCH signaling overhead is relatively large.

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

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

Such as: when the frequency range of the carrier where the SL-BWP belongs is FR1 and the subcarrier spacing SCS of the carrier where the SL-BWP belongs is 15KHz and the number of maximum available RBs of the carrier where the SL-BWP belongs is 12RB, the predefined table set 1 is selected to determine the starting position and/or bandwidth information of the SL-BWP. The determination method is to obtain the starting position and/or the bandwidth information of the SL-BWP in the form of a table look-up according to N bits in the PSBCH. When the frequency range of the carrier where the SL-BWP belongs is FR1 and the subcarrier spacing SCS of the carrier where the SL-BWP belongs is 30KHz and the number of maximum available RBs of the carrier where the SL-BWP belongs is 50RB, the predefined table set 2 is selected to determine the starting position and/or bandwidth information of the SL-BWP. When the frequency range of the carrier where the SL-BWP belongs to is FR2 and the subcarrier spacing SCS of the carrier where the SL-BWP belongs to is 60KHz and the number of maximum available RBs of the carrier where the SL-BWP belongs to is 100RB, the predefined table set 3 is selected to determine the starting position and/or bandwidth information of the SL-BWP. The following table shows:

The advantage of this embodiment is that different predefined table sets are used for different frequency ranges of the carrier in which the SL-BWP is located and/or subcarrier spacing SCS of the carrier in which the SL-BWP is located and/or the number of maximum available RBs of the carrier in which the SL-BWP is located, so that a plurality of sets of combined values of different SL-BWP starting positions and/or bandwidth information can be defined for different situations, the information notified by the scheme is more, and the configuration of the SL-BWP is more flexible. The first to eighth embodiments herein are merely examples and are not intended to limit the scope of the present invention.

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

step 31, receiving a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH. Here, the pre-configuration refers to that the terminal adopts a pre-set configuration when leaving the factory, or the terminal receives terminal Profile configuration data sent by the network device, so as to complete configuration.

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

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

Optionally, the relative positions of the SL-BWP and the S-SSB or the Point A include one of the following:

the starting 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 Point A, wherein the Point A refers to the center position of the 0 th subcarrier of the CRB0 of the carrier in the new wireless NR system.

the relative position offset between the SL-BWP and the Point A is the number of offset Resource Blocks (RBs) of the starting position or the middle position or other preset positions of the SL-BWP relative to the Point A.

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

It should be noted that the content of the first embodiment to the eighth embodiment is applicable 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, where the memory 43 stores a program executable by the processor 42, and the processor 42 implements: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH. Here, the pre-configuration refers to that the terminal adopts a pre-set configuration when leaving the factory, or the terminal receives terminal Profile configuration data sent by the network device, so as to complete configuration.

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

It should be noted that, the terminal is a terminal corresponding to the method of the transmitting side terminal shown in fig. 1, and all implementation manners in the method embodiment are applicable to the terminal, so that the same technical effects 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 via a bus interface, and the functions of the processor 42 may be implemented by the transmitter 41, and the functions of the transmitter 41 may be implemented by the processor 42.

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

A transmitting module 51, configured to transmit the through link synchronization signal block S-SSB in a time slot; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH. Here, the pre-configuration refers to that the terminal adopts a pre-set configuration when leaving the factory, or the terminal receives terminal Profile configuration data sent by the network device, so as to complete configuration.

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

wherein Representing the maximum bandwidth of SL-BWP, operator +.>Representing a lower rounding operation on X, M is greater than 1 and less than +.>Is a positive integer of (a). />

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

It should be noted that, the apparatus is an apparatus corresponding to the method of the transmitting side terminal shown in fig. 1, and all implementation manners in the method embodiment described above are applicable to the apparatus, so that 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, and so on.

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, where the memory 63 stores a program executable by the processor 62, and when the processor 62 executes the program, the implementation is as follows: in a time slot, receiving a through link synchronization signal block S-SSB; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH. Here, the pre-configuration refers to that the terminal adopts a pre-set configuration when leaving the factory, or the terminal receives terminal Profile configuration data sent by the network device, so as to complete configuration.

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

Note that, the terminal is a terminal corresponding to the method of the receiving side terminal shown in fig. 3, and all the implementation manners in the method embodiment are applicable to the terminal, so that 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 functions of the processor 62 may be implemented by the transceiver 61, and the functions of the receiver 61 may be implemented by the processor 62.

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

a receiving module 71, configured to receive, in a time slot, a through link synchronization signal block S-SSB; the S-SSB includes a through link physical broadcast channel PSBCH, through which through link bandwidth segments SL-BWP information including location information and/or bandwidth information of SL-BWP are configured in a preconfigured manner or through the PSBCH. Here, the pre-configuration refers to that the terminal adopts a pre-set configuration when leaving the factory, or the terminal receives terminal Profile configuration data sent by the network device, so as to complete configuration.

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

Optionally, the bandwidth information L _RBs Candidate values for (2) are:

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

Note that, the apparatus 70 is an apparatus corresponding to the method of the receiving-side terminal shown in fig. 3, and all the implementation manners in the above method embodiment 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 information received by the receiving module 71, etc.

Embodiments of the present invention also provide a computer storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of the embodiments described above with reference to fig. 1 or 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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

Furthermore, it should be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order of description, but are not necessarily performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those of ordinary skill in the art that all or any of the steps or components of the methods and apparatus of the present invention may be implemented in hardware, firmware, software, or a combination thereof in any computing device (including processors, storage media, etc.) or network of computing devices, as would be apparent to one of ordinary skill in the art after reading this description of the invention.

The object of the invention can thus also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention can thus also be achieved by merely providing a program product containing program code for implementing said method or 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 apparent that the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. The steps of executing the series of processes may naturally be executed in chronological order in the order described, but are not necessarily executed in chronological order. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes are intended to be within the scope of the present invention.

Claims

1. A method for indicating a bandwidth segment of a through link, applied to a terminal, the method comprising:

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

the pre-configured information or the pre-defined table or the pre-defined formula of the location information and/or the bandwidth information of the SL-BWP is determined according to at least one of the following:

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

the position information and/or bandwidth information of the SL-BWP is also configured through N bits of the PSBCH, wherein N is more than or equal to 1;

each value of the N bits corresponds to at least one row in at least one predefined table; or alternatively, the process may be performed,

2. The method for indicating a bandwidth segment of a through link according to claim 1, wherein the bandwidth information of the SL-BWP includes at least one of the following cases:

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

3. The method of indicating a bandwidth segment of a pass-through link according to claim 1,

and selecting candidate value intervals of the position information and/or the bandwidth information in the predefined form or the predefined formula, wherein the interval values refer to the candidate values comprising part of all possible value options.

4. The method for indicating a bandwidth segment of a through link according to claim 3,

bandwidth information L in the predefined form or predefined formula _RBs With the maximum bandwidth of SL-BWPTakes on the value of 1/M interval,/for>

5. The method of indicating a bandwidth segment of a pass-through link as set forth in claim 4,

the bandwidth information L _RBs Candidate values for (2) are:

wherein Representing the maximum bandwidth of SL-BWP, operator +. >Representing a lower rounding operation on X, M is greater than 1 and less than +.>Is a positive integer of (a).

6. The method for indicating a bandwidth segment of a 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 a reference point A, wherein the reference point A refers to the center position of a sub-carrier 0 of CRB0 of a carrier in a new wireless NR system.

7. The method of indicating a bandwidth segment of a pass-through link according to claim 6, wherein the relative position of the SL-BWP and the S-SSB or the reference point a comprises one of:

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

9. The method of indicating a bandwidth segment of a pass-through link according to claim 8,

the relative position offset of the SL-BWP and the S-SSB 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 starting position or the middle position or other preset positions of the S-SSB;

10. The method for indicating a bandwidth segment of a through link according to claim 9, wherein the frequency band in which the SL-BWP is located includes a frequency band in which the S-SSB is located, and the relative position offset includes: the S-SSB is located at the highest frequency, at the intermediate frequency, or at the lowest frequency of the frequency band in which the SL-BWP is located.

11. The method for indicating bandwidth segments of a through link according to claim 10, wherein when the S-SSB is located at a highest frequency of a frequency band where the SL-BWP is located, a subcarrier with a highest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with a subcarrier with a highest absolute center frequency of the SL-BWP;

12. The method according to claim 1, wherein the predefined table or predefined formula of SL-BWP is determined according to a frequency range to which the carrier in which the SL-BWP belongs,

13. The method according to claim 1, wherein the predefined table or predefined formula of SL-BWP is determined according to the subcarrier spacing SCS of the carrier in which the SL-BWP is located,

when the carrier wave where the SL-BWP is located is set to be different subcarrier intervals SCS, the carrier wave corresponds to different predefined form groups or predefined formula groups.

14. The method of claim 1, wherein the predefined table or predefined formula of SL-BWP is determined according to a maximum number of resource blocks RBs available on the carrier on which the SL-BWP is located,

15. A method for receiving a bandwidth segment of a through link, the method being applied to a terminal, the method comprising:

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

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

16. The method for receiving bandwidth segments of a through link according to claim 15, wherein the bandwidth information of the SL-BWP comprises at least one of:

11 resource blocks RB;

12 resource blocks RB;

the maximum number of resource blocks RBs available on the carrier.

17. The method according to claim 15, characterized in that candidate values of the position information and/or the bandwidth information in the predefined table or the predefined formula are interval valued, said interval valued meaning that the candidate values comprise part of all possible valued options.

18. The method for receiving bandwidth segments of a through link according to claim 17, characterized in that the bandwidth information L in the predefined table or predefined formula _RBs With the maximum bandwidth of SL-BWPTakes a value at 1/M interval of (2),

19. The method for receiving a bandwidth segment of a pass-through link as claimed in claim 18,characterized in that the bandwidth information L _RBs Candidate values for (2) are:

20. The method for receiving a bandwidth segment of a through link according to claim 15, wherein the location information of the SL-BWP comprises: the relative position of the SL-BWP and the S-SSB or a reference point A, wherein the reference point A refers to the center position of a sub-carrier 0 of CRB0 of a carrier in a new wireless NR system.

21. The method of claim 20, wherein the relative position of the SL-BWP and the S-SSB or the reference point a comprises one of:

22. The method for receiving a bandwidth segment of a through link according to claim 15, wherein the location information of the SL-BWP comprises: a starting position or an intermediate position or other preset positions of the SL-BWP;

23. The method according to claim 22, wherein the relative position offset between the SL-BWP and the S-SSB is the number of offset resource blocks RBs of the starting position or the intermediate position or other preset position of the SL-BWP relative to the starting position or the intermediate position or other preset position of the S-SSB;

24. The method for receiving a bandwidth segment of a through link according to claim 23, wherein the frequency band in which the SL-BWP is located includes a frequency band in which the S-SSB is located, and the relative position offset includes: the S-SSB is located at the highest frequency, at the intermediate frequency, or at the lowest frequency of the frequency band in which the SL-BWP is located.

25. The method for receiving bandwidth segments of a through link according to claim 24, wherein when the S-SSB is located at a highest frequency of a frequency band in which the SL-BWP is located, a subcarrier with a highest absolute center frequency of the S-SSB is completely overlapped or partially overlapped with a subcarrier with a highest absolute center frequency of the SL-BWP;

26. The method according to claim 15, wherein the predefined table or predefined formula of SL-BWP is determined according to a frequency range to which the carrier wave in which the SL-BWP belongs,

27. The method according to claim 15, wherein when the predefined table or the predefined formula of the SL-BWP is determined according to the subcarrier spacing SCS of the carrier in which the SL-BWP is located,

28. The method of claim 15, wherein the predefined table or predefined formula of SL-BWP is determined according to a maximum number of resource blocks RBs available on the carrier on which the SL-BWP is located,

29. A terminal, comprising: a processor, a transmitter, and a memory, where the memory stores a program executable by the processor, and when the processor executes the program, the processor realizes: transmitting a through link synchronization signal block S-SSB in a time slot; the S-SSB comprises a through link physical broadcast channel PSBCH, and the information of the through link bandwidth fragments SL-BWP is configured in a preconfigured mode or through the PSBCH, and the SL-BWP information comprises the position information and/or the bandwidth information of the SL-BWP;

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

30. A signal transmission apparatus, comprising:

a transmitting module, configured to transmit a direct link synchronization signal block S-SSB in a time slot; the S-SSB comprises a through link physical broadcast channel PSBCH, and the information of the through link bandwidth fragments SL-BWP is configured in a preconfigured mode or through the PSBCH, and the SL-BWP information comprises the position information and/or the bandwidth information of the SL-BWP;

The carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

31. A terminal, comprising: a processor, a receiver, and a memory, where the memory stores a program executable by the processor, and when the processor executes the program, the processor realizes: in a time slot, receiving a through link synchronization signal block S-SSB; the S-SSB comprises a through link physical broadcast channel PSBCH, and the information of the through link bandwidth fragments SL-BWP is configured in a preconfigured mode or through the PSBCH, and the SL-BWP information comprises the position information and/or the bandwidth information of the SL-BWP;

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

32. A signal receiving apparatus, comprising:

a receiving module, configured to receive, in a time slot, a direct link synchronization signal block S-SSB; the S-SSB comprises a through link physical broadcast channel PSBCH, and the information of the through link bandwidth fragments SL-BWP is configured in a preconfigured mode or through the PSBCH, and the SL-BWP information comprises the position information and/or the bandwidth information of the SL-BWP;

the carrier wave of SL-BWP belongs to the frequency range;

subcarrier spacing SCS of carrier wave where SL-BWP is located;

33. A computer storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-14 or the method of any one of claims 15 to 28.