EP4399914A1

EP4399914A1 - Methods, apparatuses, and computer readable media for sidelink communication

Info

Publication number: EP4399914A1
Application number: EP21955565.3A
Authority: EP
Inventors: Yong Liu; Tao Tao; Dong Li; Naizheng ZHENG
Original assignee: Nokia Solutions and Networks Oy
Current assignee: Nokia Solutions and Networks Oy
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2024-07-17
Also published as: EP4399914A4; WO2023029034A1; CN117917138A

Abstract

A method, apparatus and computer readable media for sidelink communication. The method performed by a user equipment device may include transmitting a data channel and at least one sequence based signal according to a configuration, wherein a frequency band may be divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters may comprise a plurality of physical resource blocks, in which one physical resource block may be for the data channel, a plurality of consecutive physical resource blocks may be allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and the at least one second symbol may follow at least one first symbol.

Description

METHODS, APPARATUSES, AND COMPUTER READABLE MEDIA FOR SIDELINK COMMUNICATION

TECHNICAL FIELD

Various embodiments relate to methods, apparatuses, and computer readable media for sidelink communication.

BACKGROUND

In sidelink communication in unlicensed spectrum, there are requirements on a sidelink synchronization signal block (S-SSB) structure. For example, an occupied channel bandwidth (OCB) should be between 80%and 100%of a declared nominal channel bandwidth (NCB) , and during a channel occupancy time (COT) , an equipment may operate temporarily with an OCB of less than 80%of its NCB with a minimum of 2 MHz.
SUMMARY
A brief summary of exemplary embodiments is provided below to provide basic understanding of some aspects of various embodiments. It should be noted that this summary is not intended to identify key features of essential elements or define scopes of the embodiments, and its sole purpose is to introduce some concepts in a simplified form as a preamble for a more detailed description provided below.
In a first aspect, disclosed is a method performed by a user equipment device. The method may include transmitting a data channel and at least one sequence based signal according to a configuration, wherein a frequency band may be divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters may include a plurality of physical resource blocks, in which one physical resource block may be for the data channel, a plurality of consecutive physical resource blocks may be allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel may be different from one physical resource block for a data channel of another user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the another user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
In a second aspect, disclosed is a method. The method may include dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block may be for the data channel of the first user equipment device; and allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel of the first user equipment device, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel of the first user equipment device, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel of the first user equipment device may be different from one physical resource block for a data channel of a second user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the second user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
In a third aspect, disclosed is an apparatus. The apparatus may include at least one processor and at least one memory. The at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus as a user equipment device to perform transmitting a data channel and at least one sequence based signal according to a configuration, wherein a frequency band may be divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters may comprise a plurality of physical resource blocks, in which one physical resource block may be for the data channel, a plurality of consecutive physical resource blocks may be allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel may be different from one physical resource block for a data channel of another user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the another user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
In a fourth aspect, disclosed is an apparatus. The apparatus may include at least one processor and at least one memory. The at least one memory may include computer program code, and the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to perform dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block may be for the data channel of the first user equipment device, and allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel of the first user equipment device, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel of the first user equipment device, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel of the first user equipment device may be different from one physical resource block for a data channel of a second user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the second user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
In a fifth aspect, disclosed is an apparatus. The apparatus as a user equipment device may include means for transmitting a data channel and at least one sequence based signal according to a configuration, wherein a frequency band may be divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters may comprise a plurality of physical resource blocks, in which one physical resource block is for the data channel, a plurality of consecutive physical resource blocks may be allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel may be different from one physical resource block for a data channel of another user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the another user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
In a sixth aspect, disclosed is an apparatus. The apparatus may include means for dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block may be for the data channel of the first user equipment device, and means for allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel of the first user equipment device, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel of the first user equipment device, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel of the first user equipment device may be different from one physical resource block for a data channel of a second user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the second user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
In a seventh aspect, a computer readable medium is disclosed. The computer readable medium may include instructions stored thereon for causing an apparatus as a user equipment device to perform transmitting a data channel and at least one sequence based signal according to a configuration, wherein a frequency band may be divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters may comprise a plurality of physical resource blocks, in which one physical resource block may be for the data channel, a plurality of consecutive physical resource blocks may be allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel may be different from one physical resource block for a data channel of another user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the another user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
In an eighth aspect, a computer readable medium is disclosed. The computer readable medium may include instructions stored thereon for causing an apparatus to perform dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block may be for the data channel of the first user equipment device, and allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein the at least one second symbol may follow at least one first symbol.
In some embodiments, for the data channel of the first user equipment device, the physical resource block may be in an identical position in each of the plurality of clusters.
In some embodiments, for the data channel of the first user equipment device, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters.
In some embodiments, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control.
In some embodiments, the at least one second symbol may follow the plurality of first symbols.
In some embodiments, in each of the plurality of clusters the one physical resource block for the data channel of the first user equipment device may be different from one physical resource block for a data channel of a second user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the second user equipment device.
In some embodiments, the data channel may be a physical sidelink broadcast channel.
In some embodiments, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
In some embodiments, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks.
Other features and advantages of the example embodiments of the present disclosure will also be apparent from the following description of specific embodiments when read in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of example embodiments of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

Some example embodiments will now be described, by way of non-limiting examples, with reference to the accompanying drawings.
FIG. 1 shows an exemplary sequence diagram for sidelink communication in unlicensed spectrum according to embodiments of the present disclosure.
FIG. 2 shows an example configuration of S-SSB structure according to an embodiment of the present disclosure.
FIG. 3 shows an example configuration of S-SSB structure according to an embodiment of the present disclosure.
FIG. 4 shows an example configuration of S-SSB structure according to an embodiment of the present disclosure.
FIG. 5 shows a flow chart illustrating an example method for sidelink communication according to an embodiment of the present disclosure.
FIG. 6 shows a flow chart illustrating an example method for sidelink communication according to an embodiment of the present disclosure.
FIG. 7 shows a block diagram illustrating an example apparatus for sidelink communication according to an embodiment of the present disclosure.
FIG. 8 shows a block diagram illustrating an example apparatus for sidelink communication according to an embodiment of the present disclosure.
FIG. 9 shows a block diagram illustrating an example apparatus for sidelink communication according to an embodiment of the present disclosure.
FIG. 10 shows a block diagram illustrating an example apparatus for sidelink communication according to an embodiment of the present disclosure.
Throughout the drawings, same or similar reference numbers indicate same or similar elements. A repetitive description on the same elements would be omitted.

DETAILED DESCRIPTION

Herein below, some example embodiments are described in detail with reference to the accompanying drawings. The following description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well known circuits, techniques and components are shown in block diagram form to avoid obscuring the described concepts and features.
Embodiments of the present disclosure provide a configuration of S-SSB structure. The requirements on the S-SSB structure for sidelink communication in unlicensed spectrum may be satisfied according to the embodiments of the present disclosure.
FIG. 1 shows an exemplary sequence diagram for sidelink communication in unlicensed spectrum according to embodiments of the present disclosure. Referring to the FIG. 1, a user equipment (UE) device 110 may be a UE device to perform the sidelink communication in unlicensed spectrum according to the configuration of S-SSB structure, and a network apparatus 120 may be an apparatus of network side, e.g., in a base station (BS) or in a core network (CN) to determine the configuration for the UE device 110 to perform the sidelink communication in unlicensed spectrum. The UE device 110 is associated with a cell the BS covers. In a case where the network apparatus 120 is in the BS, the network apparatus 120 may provide the configuration to the UE device 110. In a case where the network apparatus 120 is in the CN, the network apparatus 120 may provide the configuration to the UE device 110 via the BS. Alternatively or additionally, the configuration may be specified in a specification or a standard.
FIG. 2 shows an example configuration of S-SSB 200 structure according to an embodiment of the present disclosure. FIG. 3 shows an example configuration of S-SSB 300 structure according to an embodiment of the present disclosure. FIG. 4 shows an example configuration of S-SSB 400 structure according to an embodiment of the present disclosure.
In the FIG. 2 to the FIG. 4, an abscissa axis refers to time domain, and a block refers to a symbol. The symbols may be, e.g., orthogonal frequency division multiplexing (OFDM) symbols. 13 symbols of the S-SSB may be used for the sidelink communication, and it may be appreciated that other number, e.g., 11, 15, etc., of symbols in the configuration of S-SSB structure may be used for the sidelink communication. The symbols used for the sidelink communication may be within a time slot or across more than one time slots.
In the FIG. 2 to the FIG. 4, a vertical axis refers to frequency domain, and a block in the vertical axis refers to one physical resource block (PRB) . A frequency band includes 99 PRBs shown as an example in the FIG. 2 to the FIG. 4, and it may be appreciated that other number of PRBs in the configuration of S-SSB structure may be included in the frequency band used for the sidelink communication. For one UE device, e.g., the UE device 110, 11 PRBs of the S-SSB may be used for the sidelink communication, and it may be appreciated that for one UE device, other number, e.g., 9, 13, 15, etc., of PRBs in the configuration of S-SSB structure may be used for the sidelink communication.
The exemplary sequence diagram for sidelink communication in unlicensed spectrum will be described with respect to the FIG. 1 to the FIG. 4.
Referring to the FIG. 1, in an operation 130, the network apparatus 120 may divide a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first UE device, and each of the plurality of clusters may comprise a plurality of PRBs, in which one PRB may be for the data channel of the first UE device. The first UE device may be, for example, the UE device 110, and the data channel may be, for example, a physical sidelink broadcast channel (PSBCH) .
Referring to the FIG. 2 to the FIG. 4, the frequency band for UE devices including the UE device 110 to transmit the PSBCH may be divided into clusters. The cluster may be a part of the frequency band, and the clusters may be of equal size. The 99 PRBs included in the frequency band may be divided into 11 clusters, labelled as cluster 1, cluster 2, ……, and cluster 11, and each cluster may include 9 PRBs. In each cluster, there may be one PRB which may be used for, e.g., the UE device 110 to transmit the PSBCH. Thus in the configuration of S-SSB structure there may be 11 PRBs for the PSBCH transmitted from the UE device 110, and the 11 PRBs may be distributed to 11 clusters, such that the PSBCH may have interlaced frequency division multiplexing (FDM) structure in frequency domain. According to such a configuration of S-SSB structure, the OCB of the PSBCH may be between 80%and 100%of the frequency band, which may be the declared NCB.
In an embodiment, for the data channel of the first UE device, e.g., the UE device 110, the PRB is in an identical position in each of the plurality of clusters. For example, as is shown in the FIG. 2 and the FIG. 3, for the PSBCH of the UE device 110, in each of the 11 clusters, the PRB is in the third position from top of the respective cluster. It may be appreciated that the PRB for the PSBCH of the UE device 110 in each of the clusters may be in other identical position, e.g., fifth, seventh, eighth, etc., position of the respective cluster. Thus, for the PSBCH transmitted from the UE device 110, the spacings between two PRBs in adjacent clusters may be set equal.
Alternatively, in an embodiment, for the data channel of the first UE device, e.g., the UE device 110, at least two PRBs may be in different positions in at least two clusters of the plurality of clusters. For example, in the configuration of S-SSB 200 structure shown in the FIG. 2, the PRB in the cluster 3 for the PSBCH of the UE device 110 may be changed to another PRB in the cluster 3, and thus the PRB in the cluster 3 may be in a position different from the PRB in another cluster, e.g., the adjacent cluster 2 or cluster 4. In this case, for the PSBCH transmitted from the UE device 110, the spacings between two PRBs in adjacent clusters, e.g., cluster 2 and cluster 3, or cluster 3 and cluster 4, may be set non-equal.
Referring to the FIG. 1, in an operation 140, the network apparatus 120 may allocate a plurality of consecutive PRBs for the at least one sequence based signal of the first UE device, on at least one second symbol for at least one sequence based signal of the first UE device. The first UE device may be, for example, the UE device 110. The at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise, for example, a sidelink primary synchronization signal (S-PSS) and/or a sidelink secondary synchronization signal (S-SSS) .
The sequence based synchronization signal, including but not limited to the S-PSS and the S-SSS, may be used for synchronization at receiving UE devices, including timing synchronization, frequency synchronization, phase synchronization, etc. The sequence based synchronization signal may be also used for other purposes, such as conveying a synchronization source type, a synchronization source identity, etc.
The sequence based signal is not limited to the sequence based synchronization signal. Any other types of sequence based signal can be applied in the embodiments of the present disclosure, such as a sequence based signal used for channel estimation.
Referring to the FIG. 2 to the FIG. 4, the at least one sequence based synchronization signal, e.g. the S-PSS and the S-SSS from the UE device 110 occupies 11 consecutive PRBs. The consecutive PRBs occupied by the S-PSS and the S-SSS from the UE device 110 may be in the center of the frequency band in the configuration of S-SSB structure. Alternatively, the consecutive PRBs occupied by the S-PSS and the S-SSS from a UE device may be in other part of the frequency band in the configuration of S-SSB structure. For example, as is shown in the FIG. 4, the consecutive PRBs occupied by the S-PSS and the S-SSS from another UE device 410 may be not in the central part of the frequency band in the configuration of S-SSB structure.
In a case where a subcarrier spacing (SCS) is 15 KHz, the occupied channel bandwidth of S-PSS and /or S-SSS (11 PRBs) may be very close to 2 MHz, and thus the requirement that during the COT the minimum bandwidth is 2 MHz may be satisfied.
In an embodiment, as is shown in the FIG. 2 to the FIG. 4, the S-PSS and the S-SSS occupy identical plurality of consecutive PRBs in frequency domain. Alternatively, it may be appreciated that the S-PSS and the S-SSS from the UE device 110 may occupy different plurality of consecutive PRBs in frequency domain. For example, the S-PSS and the S-SSS from the UE device 110 may be partly overlapped or not overlapped in frequency domain.
In an embodiment, the at least one second symbol may follow at least one first symbol. As is shown in the FIG. 2 to the FIG. 4, in time domain, at least one first symbol for the PSBCH is ahead of the second symbols for the S-PSS and /or S-SSS.
In an embodiment, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control (AGC) . For example, in the configuration of S-SSB structure, an initial symbol, e.g., symbol 1 in the FIG. 2 to the FIG. 4 may be used for AGC. In the configuration of S-SSB 300 structure shown in the FIG. 3, the initial symbol, symbol 1, is for PSBCH and for AGC, the S-PSS and the S-SSS follow the initial PSBCH symbol and occupy symbols 2 to 5, and the rest of PSBCH symbols occupy symbols 6 to 13. According to this embodiment, in the sidelink communication in unlicensed spectrum, a receiving UE device may only need to buffer one symbol for potential PSBCH, and thus the buffer size for PSBCH symbols may be reduced.
In an embodiment, the at least one second symbol follows the plurality of first symbols. For example, in the configuration of S-SSB 200 structure shown in the FIG. 2, the plurality of first symbols for the PSBCH occupy symbols 1 to 9, the second symbols for the S-PSS and the S-SSS follow the plurality of first symbols for the PSBCH and occupy symbols 10 to 13. According to this embodiment, the presence of the sidelink communication in unlicensed spectrum may be easy for an external communication device, such as a wireless fidelity (Wi-Fi) device, to detect.
Further, there may be a short guard interval between the first symbols and the second symbols. For example, the short guard interval may be 16us or shorter than 16us. For example, there may be a short guard interval between symbol 9 and symbol 10 in the FIG. 2. For example, there may be a short guard interval between symbol 1 and symbol 2 in the FIG. 3.
Further, there may be a short guard interval between the data channel and the sequence based signal. For example, there may be a short guard interval between symbol 5 and symbol 6 in the FIG. 3.
In an embodiment, in each of the plurality of clusters the one PRB for the data channel of the first UE device may be different from one PRB for a data channel of a second UE device, and the plurality of consecutive PRBs for the at least one sequence based signal of the first UE device are different from a plurality of consecutive PRBs for at least one sequence based signal of the second UE device. The first UE device may be the UE device 110, and the second UE device may be, e.g., another UE device 410.
For example, in the configuration of S-SSB 400 structure shown in the FIG. 4, in each cluster, such as cluster 1, …, and cluster 11, the PRB for the PSBCH from the UE device 110 is different from the PRB for the PSBCH from the UE device 410, and the plurality of consecutive PRBs for the S-PSS and the S-SSS from the UE device 110 are different from the plurality of consecutive PRBs for the S-PSS and the S-SSS from the UE device 410. According to this embodiment, the multiplexing between S-SSBs from different transmitting UE devices, such as the UE device 110 and the UE device 410, may be achieved.
In the configurations of S-SSB structures shown in the FIG. 2 to the FIG. 4, the S-SSS symbols follow the S-PSS symbols in time domain, and it may be appreciated that the S-SSS may be ahead of the S-PSS in time domain.
Then, the network apparatus 120 may transmit a configuration 150 to the UE devices such as the UE device 110 and the UE device 410. The configuration 150 may be, for example, the configuration of S-SSB 200 structure, the configuration of S-SSB 300 structure, the configuration of S-SSB 400 structure, etc. As is mentioned above, in a case where the configuration 150 is specified in specification or standard, it may be unnecessary for the UE device, such as the UE device 110, the UE device 410, etc., to receive the configuration 150 from the network side.
In an operation 160, the UE device 110 may transmit the data channel and the at least one sequence based signal according to the configuration 150. The data channel may be, for example, the PSBCH, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may include the S-PSS and the S-SSS. According to the embodiments of the present disclosure, by transmitting the data channel in wide band, e.g. equal to or more than 80%of the frequency band, which may be the declared NCB, and transmitting the at least one sequence based signal in narrow band, e.g., less than 80%of the frequency band and close to the minimum bandwidth of 2 MHz, the requirements on the S-SSB structure for sidelink communication in unlicensed spectrum may be satisfied.
FIG. 5 shows a flow chart illustrating an example method 500 for sidelink communication according to an embodiment of the present disclosure. The example method 500 may be performed for example at a UE device such as the UE device 110.
Referring to the FIG. 5, the example method 500 may include an operation 510 of transmitting a data channel and at least one sequence based signal according to a configuration, wherein a frequency band may be divided into a plurality of clusters, on a plurality of first symbols for the data channel, each of the plurality of clusters may comprise a plurality of physical resource blocks, in which one physical resource block may be for the data channel, a plurality of consecutive physical resource blocks may be allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and the at least one second symbol may follow at least one first symbol.
Details of the operation 510 have been described in the above descriptions with respect to at least the configuration 150 and the operation 160, and repetitive descriptions thereof are omitted here.
In an embodiment, for the data channel, the physical resource block may be in an identical position in each of the plurality of clusters. The more details have been described in the above descriptions with respect to at least the FIG. 2 and the FIG. 3, and repetitive descriptions thereof are omitted here.
In an embodiment, for the data channel, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters. The more details have been described in the above descriptions with respect to at least the FIG. 2, and repetitive descriptions thereof are omitted here.
In an embodiment, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control. The more details have been described in the above descriptions with respect to at least the FIG. 3, and repetitive descriptions thereof are omitted here.
In an embodiment, the at least one second symbol may follow the plurality of first symbols. The more details have been described in the above descriptions with respect to at least the FIG. 2, and repetitive descriptions thereof are omitted here.
In an embodiment, in each of the plurality of clusters the one physical resource block for the data channel may be different from one physical resource block for a data channel of another user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the another user equipment device. The another user equipment device may be, for example, the UE device 410. The more details have been described in the above descriptions with respect to at least the FIG. 4, and repetitive descriptions thereof are omitted here.
In an embodiment, the data channel may be a physical sidelink broadcast channel. The more details have been described in the above descriptions with respect to at least the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
In an embodiment, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal. The more details have been described in the above descriptions with respect to at least the operation 140, the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
In an embodiment, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks. The more details have been described in the above descriptions with respect to at least the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
FIG. 6 shows a flow chart illustrating an example method 600 for sidelink communication according to an embodiment of the present disclosure. The example method 600 may be performed for example at a network apparatus such as the network apparatus 120.
Referring to the FIG. 6, the example method 600 may include an operation 610 of dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, and each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block may be for the data channel of the first user equipment device, and an operation 620 of allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein the at least one second symbol may follow at least one first symbol. The first user equipment device may be, for example, the UE device 110.
Details of the operation 610 have been described in the above descriptions with respect to at least the operation 130, the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
Details of the operation 620 have been described in the above descriptions with respect to at least the operation 140, the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
In an embodiment, for the data channel of the first user equipment device, the physical resource block may be in an identical position in each of the plurality of clusters. The more details have been described in the above descriptions with respect to at least the FIG. 2 and the FIG. 3, and repetitive descriptions thereof are omitted here.
In an embodiment, for the data channel of the first user equipment device, at least two physical resource blocks may be in different positions in at least two clusters of the plurality of clusters. The more details have been described in the above descriptions with respect to at least the FIG. 2, and repetitive descriptions thereof are omitted here.
In an embodiment, the at least one first symbol followed by the at least one second symbol may comprise one symbol for automatic gain control. The more details have been described in the above descriptions with respect to at least the FIG. 3, and repetitive descriptions thereof are omitted here.
In an embodiment, the at least one second symbol may follow the plurality of first symbols. The more details have been described in the above descriptions with respect to at least the FIG. 2, and repetitive descriptions thereof are omitted here.
In an embodiment, in each of the plurality of clusters the one physical resource block for the data channel of the first user equipment device may be different from one physical resource block for a data channel of a second user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device may be different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the second user equipment device. The second user equipment device may be, for example, the UE device 410. The more details have been described in the above descriptions with respect to at least the FIG. 4, and repetitive descriptions thereof are omitted here.
In an embodiment, the data channel may be a physical sidelink broadcast channel. The more details have been described in the above descriptions with respect to at least the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
In an embodiment, the at least one sequence based signal may be at least one sequence based synchronization signal, and the at least one sequence based synchronization signal may comprise a sidelink primary synchronization signal and a sidelink secondary synchronization signal. The more details have been described in the above descriptions with respect to at least the operation 140, the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
In an embodiment, the sidelink primary synchronization signal and the sidelink secondary synchronization signal may occupy identical plurality of consecutive physical resource blocks. The more details have been described in the above descriptions with respect to at least the FIG. 2, the FIG. 3, and the FIG. 4, and repetitive descriptions thereof are omitted here.
FIG. 7 shows a block diagram illustrating an example apparatus 700 for sidelink communication according to an embodiment of the present disclosure. The apparatus, for example, may be at least part of the UE 110 in the above examples.
As shown in the FIG. 7, the example apparatus 700 may include at least one processor 710 and at least one memory 720 that may include computer program code 730. The at least one memory 720 and the computer program code 730 may be configured to, with the at least one processor 710, cause the apparatus 700 at least to perform the example method 500 described above.
In various example embodiments, the at least one processor 710 in the example apparatus 700 may include, but not limited to, at least one hardware processor, including at least one microprocessor such as a central processing unit (CPU) , a portion of at least one hardware processor, and any other suitable dedicated processor such as those developed based on for example Field Programmable Gate Array (FPGA) and Application Specific Integrated Circuit (ASIC) . Further, the at least one processor 710 may also include at least one other circuitry or element not shown in the FIG. 7.
In various example embodiments, the at least one memory 720 in the example apparatus 700 may include at least one storage medium in various forms, such as a volatile memory and/or a non-volatile memory. The volatile memory may include, but not limited to, for example, a random-access memory (RAM) , a cache, and so on. The non-volatile memory may include, but not limited to, for example, a read only memory (ROM) , a hard disk, a flash memory, and so on. Further, the at least memory 720 may include, but are not limited to, an electric, a magnetic, an optical, an electromagnetic, an infrared, or a semiconductor system, apparatus, or device or any combination of the above.
Further, in various example embodiments, the example apparatus 700 may also include at least one other circuitry, element, and interface, for example at least one I/O interface, at least one antenna element, and the like.
In various example embodiments, the circuitries, parts, elements, and interfaces in the example apparatus 700, including the at least one processor 710 and the at least one memory 720, may be coupled together via any suitable connections including, but not limited to, buses, crossbars, wiring and/or wireless lines, in any suitable ways, for example electrically, magnetically, optically, electromagnetically, and the like.
It is appreciated that the structure of the apparatus on the side of the UE 110 is not limited to the above example apparatus 700.
FIG. 8 shows a block diagram illustrating an example apparatus 800 for sidelink communication according to an embodiment of the present disclosure. The apparatus, for example, may be at least part of the network apparatus 120 in the above examples.
As shown in the FIG. 8, the example apparatus 800 may include at least one processor 810 and at least one memory 820 that may include computer program code 830. The at least one memory 820 and the computer program code 830 may be configured to, with the at least one processor 810, cause the apparatus 800 at least to perform at least one of the example method 600 described above.
In various example embodiments, the at least one processor 810 in the example apparatus 800 may include, but not limited to, at least one hardware processor, including at least one microprocessor such as a central processing unit (CPU) , a portion of at least one hardware processor, and any other suitable dedicated processor such as those developed based on for example Field Programmable Gate Array (FPGA) and Application Specific Integrated Circuit (ASIC) . Further, the at least one processor 810 may also include at least one other circuitry or element not shown in the FIG. 8.
In various example embodiments, the at least one memory 820 in the example apparatus 800 may include at least one storage medium in various forms, such as a volatile memory and/or a non-volatile memory. The volatile memory may include, but not limited to, for example, a random-access memory (RAM) , a cache, and so on. The non-volatile memory may include, but not limited to, for example, a read only memory (ROM) , a hard disk, a flash memory, and so on. Further, the at least memory 820 may include, but are not limited to, an electric, a magnetic, an optical, an electromagnetic, an infrared, or a semiconductor system, apparatus, or device or any combination of the above.
Further, in various example embodiments, the example apparatus 800 may also include at least one other circuitry, element, and interface, for example at least one I/O interface, at least one antenna element, and the like.
In various example embodiments, the circuitries, parts, elements, and interfaces in the example apparatus 800, including the at least one processor 810 and the at least one memory 820, may be coupled together via any suitable connections including, but not limited to, buses, crossbars, wiring and/or wireless lines, in any suitable ways, for example electrically, magnetically, optically, electromagnetically, and the like.
It is appreciated that the structure of the apparatus on the side of the network apparatus 120 is not limited to the above example apparatus 800.
FIG. 9 shows a block diagram illustrating an example apparatus 900 for sidelink communication according to an embodiment of the present disclosure. The apparatus, for example, may be at least part of the UE 110 in the above examples.
As shown in FIG. 9, the example apparatus 900 may include means 910 for performing the operation 510 of the example method 500. In one or more another example embodiments, at least one I/O interface, at least one antenna element, and the like may also be included in the example apparatus 900.
In some example embodiments, examples of means in the example apparatus 900 may include circuitries. For example, an example of means 910 may include a circuitry configured to perform the operation 510 of the example method 500. In some example embodiments, examples of means may also include software modules and any other suitable function entities.
FIG. 10 shows a block diagram illustrating an example apparatus 1000 for sidelink communication according to an embodiment of the present disclosure. The apparatus, for example, may be at least part of the network apparatus 120 in the above examples.
As shown in the FIG. 10, the example apparatus 1000 may include means 1010 for performing the operation 610 of the example method 600, and means 1020 for performing the operation 620 of the example method 600. In one or more another example embodiments, at least one I/O interface, at least one antenna element, and the like may also be included in the example apparatus 1000.
In some example embodiments, examples of means in the example apparatus 1000 may include circuitries. For example, an example of means 1010 may include a circuitry configured to perform the operation 610 of the example method 600, and an example of means 1020 may include a circuitry configured to perform the operation 620 of the example method 600. In some example embodiments, examples of means may also include software modules and any other suitable function entities.
The term “circuitry” throughout this disclosure may refer to one or more or all of the following: (a) hardware-only circuit implementations (such as implementations in only analog and/or digital circuitry) ; (b) combinations of hardware circuits and software, such as (as applicable) (i) a combination of analog and/or digital hardware circuit (s) with software/firmware and (ii) any portions of hardware processor (s) with software (including digital signal processor (s) ) , software, and memory (ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) ; and (c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation. This definition of circuitry applies to one or all uses of this term in this disclosure, including in any claims. As a further example, as used in this disclosure, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware. The term circuitry also covers, for example and if applicable to the claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
Another example embodiment may relate to computer program codes or instructions which may cause an apparatus to perform at least respective methods described above. Another example embodiment may be related to a computer readable medium having such computer program codes or instructions stored thereon. In some embodiments, such a computer readable medium may include at least one storage medium in various forms such as a volatile memory and/or a non-volatile memory. The volatile memory may include, but not limited to, for example, a RAM, a cache, and so on. The non-volatile memory may include, but not limited to, a ROM, a hard disk, a flash memory, and so on. The non-volatile memory may also include, but are not limited to, an electric, a magnetic, an optical, an electromagnetic, an infrared, or a semiconductor system, apparatus, or device or any combination of the above.
Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise, ” “comprising, ” and the like are to be construed in an inclusive sense, as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to. ” The word “coupled” , as generally used herein, refers to two or more elements that may be either directly connected, or connected by way of one or more intermediate elements. Likewise, the word “connected” , as generally used herein, refers to two or more elements that may be either directly connected, or connected by way of one or more intermediate elements. Additionally, the words “herein, ” “above, ” “below, ” and words of similar import, when used in this application, shall refer to this application as a whole and not to any particular portions of this application. Where the context permits, words in the description using the singular or plural number may also include the plural or singular number respectively. The word “or” in reference to a list of two or more items, that word covers all of the following interpretations of the word: any of the items in the list, all of the items in the list, and any combination of the items in the list.
Moreover, conditional language used herein, such as, among others, “can, ” “could, ” “might, ” “may, ” “e.g., ” “for example, ” “such as” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements and/or states. Thus, such conditional language is not generally intended to imply that features, elements and/or states are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without author input or prompting, whether these features, elements and/or states are included or are to be performed in any particular embodiment.
As used herein, the term "determine/determining" (and grammatical variants thereof) can include, not least: calculating, computing, processing, deriving, measuring, investigating, looking up (for example, looking up in a table, a database or another data structure) , ascertaining and the like. Also, "determining" can include receiving (for example, receiving information) , accessing (for example, accessing data in a memory) , obtaining and the like. Also, "determine/determining" can include resolving, selecting, choosing, establishing, and the like.
While some embodiments have been described, these embodiments have been presented by way of example, and are not intended to limit the scope of the disclosure. Indeed, the apparatus, methods, and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the methods and systems described herein may be made without departing from the spirit of the disclosure. For example, while blocks are presented in a given arrangement, alternative embodiments may perform similar functionalities with different components and/or circuit topologies, and some blocks may be deleted, moved, added, subdivided, combined, and/or modified. At least one of these blocks may be implemented in a variety of different ways. The order of these blocks may also be changed. Any suitable combination of the elements and acts of the some embodiments described above can be combined to provide further embodiments. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the disclosure.
Abbreviations used in the description and/or in the figures are defined as follows:
AGC automatic gain control
BS base station
CN core network
COT channel occupancy time
FDM frequency division multiplexing
NCB nominal channel bandwidth
OCB occupied channel bandwidth
OFDM orthogonal frequency division multiplexing
PRB physical resource blocks
PSBCH physical sidelink broadcast channel
SCS subcarrier spacing
S-PSS sidelink primary synchronization signal
S-SSB sidelink synchronization signal block
S-SSS sidelink secondary synchronization signal
UE user equipment
Wi-Fi wireless fidelity

Claims

A method performed by a user equipment device comprising:

transmitting a data channel and at least one sequence based signal according to a configuration, wherein

a frequency band is divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters comprises a plurality of physical resource blocks, in which one physical resource block is for the data channel,

a plurality of consecutive physical resource blocks are allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and

the at least one second symbol follows at least one first symbol.
The method of claim 1, wherein for the data channel, the physical resource block is in an identical position in each of the plurality of clusters.
The method of claim 1, wherein for the data channel, at least two physical resource blocks are in different positions in at least two clusters of the plurality of clusters.
The method of any of claims 1 to 3, wherein the at least one first symbol followed by the at least one second symbol comprises one symbol for automatic gain control.
The method of any of claims 1 to 4, wherein the at least one second symbol follows the plurality of first symbols.
The method of any of claims 1 to 5, wherein in each of the plurality of clusters the one physical resource block for the data channel is different from one physical resource block for a data channel of another user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal are different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the another user equipment device.
The method of any of claims 1 to 6, wherein the data channel is a physical sidelink broadcast channel.
The method of any of claims 1 to 7, wherein the at least one sequence based signal is at least one sequence based synchronization signal, and the at least one sequence based synchronization signal comprises a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
The method of claim 8, wherein the sidelink primary synchronization signal and the sidelink secondary synchronization signal occupy identical plurality of consecutive physical resource blocks.
A method comprising:

dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block is for the data channel of the first user equipment device; and

allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein

the at least one second symbol follows at least one first symbol.
The method of claim 10, wherein for the data channel of the first user equipment device, the physical resource block is in an identical position in each of the plurality of clusters.
The method of claim 10, wherein for the data channel of the first user equipment device, at least two physical resource blocks are in different positions in at least two clusters of the plurality of clusters.
The method of any of claims 10 to 12, wherein the at least one first symbol followed by the at least one second symbol comprises one symbol for automatic gain control.
The method of any of claims 10 to 13, wherein the at least one second symbol follows the plurality of first symbols.
The method of any of claims 10 to 14, wherein in each of the plurality of clusters the one physical resource block for the data channel of the first user equipment device is different from one physical resource block for a data channel of a second user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device are different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the second user equipment device.
The method of any of claims 10 to 15, wherein the data channel is a physical sidelink broadcast channel.
The method of any of claims 10 to 16, the at least one sequence based signal is at least one sequence based synchronization signal, and the at least one sequence based synchronization signal comprises a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
The method of claim 17, wherein the sidelink primary synchronization signal and the sidelink secondary synchronization signal occupy identical plurality of consecutive physical resource blocks.
An apparatus comprising:

at least one processor; and

at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, with the at least one processor, cause the apparatus as a user equipment device to perform:

transmitting a data channel and at least one sequence based signal according to a configuration, wherein

a frequency band is divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters comprises a plurality of physical resource blocks, in which one physical resource block is for the data channel,

a plurality of consecutive physical resource blocks are allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and

the at least one second symbol follows at least one first symbol.
The apparatus of claim 19, wherein for the data channel, the physical resource block is in an identical position in each of the plurality of clusters.
The apparatus of claim 19, wherein for the data channel, at least two physical resource blocks are in different positions in at least two clusters of the plurality of clusters.
The apparatus of any of claims 19 to 21, wherein the at least one first symbol followed by the at least one second symbol comprises one symbol for automatic gain control.
The apparatus of any of claims 19 to 22, wherein the at least one second symbol follows the plurality of first symbols.
The apparatus of any of claims 19 to 23, wherein in each of the plurality of clusters the one physical resource block for the data channel is different from one physical resource block for a data channel of another user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal are different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the another user equipment device.
The apparatus of any of claims 19 to 24, wherein the data channel is a physical sidelink broadcast channel.
The apparatus of any of claims 19 to 25, wherein the at least one sequence based signal is at least one sequence based synchronization signal, and the at least one sequence based synchronization signal comprises a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
The apparatus of claim 26, wherein the sidelink primary synchronization signal and the sidelink secondary synchronization signal occupy identical plurality of consecutive physical resource blocks.
An apparatus comprising:

at least one processor; and

at least one memory comprising computer program code, the at least one memory and the computer program code being configured to, with the at least one processor, cause the apparatus to perform:

dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block is for the data channel of the first user equipment device; and

allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein

the at least one second symbol follows at least one first symbol.
The apparatus of claim 28, wherein for the data channel of the first user equipment device, the physical resource block is in an identical position in each of the plurality of clusters.
The apparatus of claim 28, wherein for the data channel of the first user equipment device, at least two physical resource blocks are in different positions in at least two clusters of the plurality of clusters.
The apparatus of any of claims 28 to 30, wherein the at least one first symbol followed by the at least one second symbol comprises one symbol for automatic gain control.
The apparatus of any of claims 28 to 31, wherein the at least one second symbol follows the plurality of first symbols.
The apparatus of any of claims 28 to 32, wherein in each of the plurality of clusters the one physical resource block for the data channel of the first user equipment device is different from one physical resource block for a data channel of a second user equipment device, and the plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device are different from a plurality of consecutive physical resource blocks for at least one sequence based signal of the second user equipment device.
The apparatus of any of claims 28 to 33, wherein the data channel is a physical sidelink broadcast channel.
The apparatus of any of claims 28 to 34, the at least one sequence based signal is at least one sequence based synchronization signal, and the at least one sequence based synchronization signal comprises a sidelink primary synchronization signal and a sidelink secondary synchronization signal.
The apparatus of claim 35, wherein the sidelink primary synchronization signal and the sidelink secondary synchronization signal occupy identical plurality of consecutive physical resource blocks.
An apparatus as a user equipment device comprising:

means for transmitting a data channel and at least one sequence based signal according to a configuration, wherein

a frequency band is divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters comprises a plurality of physical resource blocks, in which one physical resource block is for the data channel,

a plurality of consecutive physical resource blocks are allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and

the at least one second symbol follows at least one first symbol.
An apparatus comprising:

means for dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block is for the data channel of the first user equipment device; and

means for allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein

the at least one second symbol follows at least one first symbol.
A computer readable medium comprising program instructions for causing an apparatus as a user equipment device to perform:

transmitting a data channel and at least one sequence based signal according to a configuration, wherein

a frequency band is divided into a plurality of clusters, on a plurality of first symbols for the data channel, and each of the plurality of clusters comprises a plurality of physical resource blocks, in which one physical resource block is for the data channel,

a plurality of consecutive physical resource blocks are allocated for the at least one sequence based signal, on at least one second symbol for the at least one sequence based signal, and

the at least one second symbol follows at least one first symbol.
A computer readable medium comprising program instructions for causing an apparatus to perform:

dividing a frequency band into a plurality of clusters, on a plurality of first symbols for a data channel of a first user equipment device, each of the plurality of clusters comprising a plurality of physical resource blocks, in which one physical resource block is for the data channel of the first user equipment device; and

allocating a plurality of consecutive physical resource blocks for the at least one sequence based signal of the first user equipment device, on at least one second symbol for at least one sequence based signal of the first user equipment device, wherein

the at least one second symbol follows at least one first symbol.