Electronic device and method for transmitting end and receiving end of direct link communication

Abstract

The invention provides an electronic device and method for transmitting end equipment and receiving end equipment for direct link communication. The electronic apparatus for a transmitting end device of direct link communication comprises: a processing circuit configured to generate direct link control information (SCI) in performing beam-based communication with a receiving end device of direct link communication, the SCI comprising information about resource usage and / or reservation of a communication beam in previous direct link communication of the transmitting end device; and bearing the SCI on a control channel for transmission to a receiving end device via the current beam.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and more particularly to control information transmission in sidelink (SL) communication. More particularly, the present application relates to an electronic device, method and computer-readable storage medium for a transmitting end device and a receiving end device for SL communication. Background Art

[0002] In the SL research of Rel-18, in order to improve the throughput of terminals in direct link communications and support higher-speed services such as XR, the FR2 band (such as the millimeter wave band) was introduced.

[0003] When the terminal operates in the FR2 frequency band, the communication between terminals is based on beams. Since beams have directional properties, the terminal can only send reference signals and data in the direction of the beam.

[0004] Figure 1 A schematic diagram of SL communication based on beams between user equipment (UE) as an example of a terminal is shown. For example, when UE A operates in the FR2 frequency band, UE A will send control information based on beams, and the sending and receiving of control information can only be performed within the range covered by the beam. UEs outside the beam coverage cannot receive resource usage information of UE A.

[0005] exist Figure 1 In the example, UE A, UE B, and UE C communicate with each other through different beams, and transmit the sidelink control information (SCI) through the corresponding beams. In this case, UE C cannot obtain any information about SCI 1, and therefore cannot know which time-frequency resources UE A has selected to communicate with UE B. UE C may select the same time-frequency resources as UE A to communicate with UE B, so that UE B cannot correctly receive the communication data from UE A and UE C.

[0006] Therefore, simply multiplexing the time-frequency resource selection method in the SL communication in the FR1 band in the SL communication in the FR2 band will cause conflicts in the time-frequency resource selection because the time-frequency resource usage of the surrounding terminals cannot be fully understood. Summary of the invention

[0007] A brief overview of the disclosure is given below in order to provide a basic understanding of certain aspects of the disclosure. It should be understood that this overview is not an exhaustive overview of the disclosure. It is not intended to identify key or important parts of the disclosure, nor is it intended to limit the scope of the disclosure. Its purpose is simply to give certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0008] According to one aspect of the present disclosure, an electronic device of a transmitting device for direct link (SL) communication is provided, comprising: a processing circuit configured to: generate direct link control information (SCI) when performing beam-based communication with a receiving device in SL communication, the SCI including information on resource usage and / or reservation status of a communication beam in a previous SL communication of the transmitting device; and carry the SCI on a control channel to send it to the receiving device via a current beam.

[0009] According to another aspect of the present disclosure, a method for a transmitting device for SL communication is provided, comprising: generating an SCI in performing beam-based communication with a receiving device for SL communication, the SCI including information on resource usage and / or reservation status of a communication beam in a previous SL communication of the transmitting device; and carrying the SCI on a control channel to send it to the receiving device via a current beam.

[0010] According to one aspect of the present disclosure, an electronic device of a receiving device for SL communication is provided, comprising: a processing circuit configured to: receive a control channel in a current beam from a transmitting device of SL communication while performing beam-based communication with the transmitting device; and determine an SCI based on the control channel, the SCI including information on resource usage and / or reservation status of the communication beam in a previous direct link communication of the transmitting device.

[0011] According to another aspect of the present disclosure, a method for a receiving device for SL communication is provided, comprising: receiving a control channel in a current beam from a transmitting device in beam-based communication with the SL communicating device; and determining an SCI based on the control channel, the SCI including information on resource usage and / or reservation status of the communication beam in a previous direct link communication of the transmitting device.

[0012] According to one aspect of the present disclosure, an electronic device of a transmitting device for SL communication is provided, comprising: a processing circuit configured to: generate an SCI and carry the SCI on a control channel in beam-based communication with a receiving device for SL communication; and send a control channel via a first beam and a data channel via a second beam in a time slot, wherein the beam width of the first beam is greater than the beam width of the second beam.

[0013] According to another aspect of the present disclosure, a method for a transmitting device for SL communication is provided, comprising: in performing beam-based communication with a receiving device for SL communication, generating SCI and carrying the SCI on a control channel; and sending the control channel via a first beam and sending a data channel via a second beam in a time slot, wherein the beam width of the first beam is greater than the beam width of the second beam.

[0014] According to one aspect of the present disclosure, an electronic device of a receiving device for SL communication is provided, comprising: a processing circuit configured to: in performing beam-based communication with a transmitting device of SL communication, receive a first beam including a control channel and a second beam including a data channel from the transmitting device, wherein the first beam and the second beam are transmitted in one time slot and the beam width of the first beam is greater than the beam width of the second beam; and determine SCI based on the control channel in the first beam.

[0015] According to one aspect of the present disclosure, a method for a receiving device for SL communication is provided, comprising: in performing beam-based communication with a transmitting device for SL communication, receiving a first beam including a control channel and a second beam including a data channel from the transmitting device, wherein the first beam and the second beam are transmitted in one time slot and the beam width of the first beam is greater than the beam width of the second beam; and determining SCI based on the control channel in the first beam.

[0016] According to other aspects of the present disclosure, a computer program code and a computer program product for implementing the above method and a computer-readable storage medium having the computer program code for implementing the above method recorded thereon are also provided.

[0017] The electronic device and method according to the embodiments of the present application enable the receiving device in the beam-based SL communication to obtain as much information as possible on the use of time-frequency resources, more accurately determine the use of time-frequency resources and thus select non-conflicting time-frequency resources for communication, thereby improving the reliability of communication.

[0018] These and other advantages of the present disclosure will become more apparent through the following detailed description of the preferred embodiments of the present disclosure in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to further illustrate the above and other advantages and features of the present disclosure, the specific embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are represented by the same reference numerals. It should be understood that these drawings only describe typical examples of the present disclosure and should not be regarded as limiting the scope of the present disclosure. In the drawings:

[0020] Figure 1 A schematic diagram showing beam-based SL communication between UEs is shown;

[0021] Figure 2 is a functional module block diagram of an electronic device of a transmitting end device for SL communication according to an embodiment of the present application;

[0022] Figure 3 An example of time slot design according to this embodiment is shown;

[0023] Figure 4 Another example of time slot design according to this embodiment is shown;

[0024] Figure 5 is a functional module block diagram of an electronic device of a receiving end device for SL communication according to another embodiment of the present application;

[0025] Figure 6 is a functional module block diagram of an electronic device of a transmitting end device for SL communication according to an embodiment of the present application;

[0026] Figure 7 An example of time slot design according to this embodiment is shown;

[0027] Figure 8 Another example of time slot design according to this embodiment is shown;

[0028] Fig. 9 is a functional module block diagram of an electronic device of a receiving end device for SL communication according to an embodiment of the present application;

[0029] Fig.10 A flowchart of a method for a transmitting end device for SL communication according to an embodiment of the present application is shown;

[0030] Fig.11 A flowchart of a method for a receiving end device for SL communication according to another embodiment of the present application is shown;

[0031] Fig.12 A flowchart of a method for a transmitting end device for SL communication according to an embodiment of the present application is shown;

[0032] Fig.13 A flowchart of a method for a receiving end device for SL communication according to another embodiment of the present application is shown;

[0033] Fig.14 is a block diagram showing an example of a schematic configuration of a smartphone to which the technology of the present disclosure can be applied;

[0034] Fig.15 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technology of the present disclosure can be applied; and

[0035] Fig.16 is a block diagram of an exemplary structure of a general personal computer in which the method and / or apparatus and / or system according to the embodiments of the present disclosure can be implemented. DETAILED DESCRIPTION

[0036] Exemplary embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this disclosure.

[0037] It is also necessary to explain here that, in order to avoid obscuring the present disclosure due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present disclosure are shown in the accompanying drawings, while other details that are not very relevant to the present disclosure are omitted.

[0038] <First Embodiment>

[0039] As mentioned above, in beam-based SL communication, the beam is directional, which is different from the omnidirectional transmission in the low frequency band FR1 in the existing SL communication, so the existing SCI transmission method cannot be directly applied. In view of this, this embodiment will provide a transmission scheme for SCI for beam-based SL communication. It should be understood that the beam-based SL communication described here can be SL communication using millimeter wave technology, but is not limited to this, but covers all beam-based SL communications with directional transmission.

[0040] Figure 2 FIG. 1 shows a functional module block diagram of an electronic device 100 of a transmitting end device for SL communication according to this embodiment. Figure 2 As shown, the electronic device 100 includes: a generation unit 101, configured to generate an SCI when performing beam-based communication with a receiving device in SL communication, the SCI including information on resource usage and / or reservation status of a communication beam in a previous SL communication of a transmitting device; and a communication unit 102, configured to carry the SCI on a control channel to send it to the receiving device via a current beam.

[0041] The generating unit 101 and the communicating unit 102 may be implemented by one or more processing circuits, which may be implemented as a chip or a processor, for example. Figure 2 The various functional units in the electronic device shown in the figure are merely logical modules divided according to the specific functions implemented by them, and are not used to limit the specific implementation method.

[0042] The electronic device 100 is, for example, arranged at the wireless communication terminal side or communicatively connected to the wireless communication terminal. The wireless communication terminal here can be various UEs or user terminals, or communication terminals such as mobile base stations. For example, the electronic device 100 is arranged at the transmitting end device side.

[0043] The electronic device 100 can be implemented at the chip level, or it can also be implemented at the device level. For example, the electronic device 100 can work as a wireless communication terminal itself, and can also include external devices such as a memory, a transceiver (not shown), etc. The memory can be used to store programs and related data information that need to be executed by the wireless communication terminal to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., other wireless communication terminals, base stations, core networks, etc.), and the implementation form of the transceiver is not specifically limited here.

[0044] In SL communication, the minimum time granularity of scheduling is a time slot. In the time slot, a control channel is arranged first, and then a shared channel (data channel) is arranged. The control channel can carry SCI to provide control information for this SL communication.

[0045] In this embodiment, SCI includes not only information about resource usage and / or reservation of the current beam in this SL communication, but also information about resource usage and / or reservation of the communication beam in the previous SL communication of the transmitting device. For example, the transmitting device established a communication link of PC5 with other terminal devices in the previous SL communication, and used the same communication resource pool. The receiving device of this SL communication expects to obtain more information about resource usage of the communication resource pool. In this way, the receiving device can have a more comprehensive understanding of the usage of time-frequency resources, thereby reducing the probability of conflict when selecting time-frequency resources.

[0046] For example, the SCI includes a first SCI and at least one second SCI, the first SCI including information on resource usage and / or reservation of the current beam, and the at least one second SCI including information on resource usage and / or reservation of the communication beam in the previous SL communication. There may be multiple previous communication beams, and therefore there may be multiple second SCIs.

[0047] The number of second SCIs included in the SCI may be determined statically or dynamically. For example, in the case of static determination, the number of second SCIs included in the SCI may be configured or preconfigured by the base station. The generation unit 101 may determine which of the previous beams' SCIs are to be provided as the second SCI to the receiving end device. For example, the generation unit may preferentially select the SCI of the most recently used communication beam.

[0048] In the case of dynamic determination, the generation unit 101 can determine the number of second SCIs included in the SCI based on the frequency domain size of the time-frequency resources occupied by the current beam-based SL communication and the number of communication beams in the previous SL communication of the transmitting device. For example, the number of frequency domain resources for the current SL communication is N, and the number of previous communication beams is M. If N>M, the SCI of all previous beams can be transmitted, otherwise, only the SCI of the first N-1 communication beams can be transmitted. Similarly, the generation unit 101 can determine which previous beams' SCIs are to be provided as the second SCI to the receiving device. For example, the generation unit can give priority to the SCI of the most recently used communication beam.

[0049] The SCI at least includes information about resource usage and / or reservation status of a communication beam in an immediately preceding SL communication of the transmitting device.

[0050] For example, the first SCI corresponds to the first control channel, at least one second SCI corresponds to at least one second control channel, the first control channel occupies the first subchannel in the frequency domain, at least one second control channel occupies at least one second subchannel in the frequency domain, and the first subchannel and at least one second subchannel correspond to different frequencies, respectively. That is, multiple control channels are set in one time slot, and each control channel carries the corresponding SCI. The control channel is, for example, a physical sidelink control channel (PSCCH).

[0051] Figure 3An example of a time slot design according to the present embodiment is shown. Among them, the PSCCH carrying SCI, such as the first-stage SCI, can occupy a sub-channel (sub_channel) in the frequency domain and 2 or 3 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols in the time domain, as shown in the oblique line filled part in the figure. The remaining sub-channels of this transmission can be used to transmit the physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH), as shown in the gray filled part in the figure. The time slot shown also includes OFDM symbols for automatic gain control (AGC) and OFDM symbols corresponding to the physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH).

[0052] exist Figure 3 In the example of , two control channels are set in one time slot, carrying SCI 2 (an example of the first SCI) and SCI 1 (an example of the second SCI). This example corresponds to Figure 1 The schematic diagram of the scenario shown in FIG. 1 shows that, after UE A communicates with UE B through beam 1, UE A switches to beam 2 to communicate with UE C. SCI 2 is control information for current SL communication, corresponding to current beam 2 and carried on the first subchannel; SCI 1 is control information for previous SL communication, corresponding to previous beam 1 and carried on the second subchannel. It can be seen that different control channels occupy different subchannels but occupy the same OFDM symbols (e.g., 2 or 3 OFDM symbols).

[0053] The first subchannel may be a subchannel with the lowest frequency of the transmission resource, and at least one second subchannel may be a subchannel with a frequency increasing sequentially from the first subchannel. In this way, the receiving device may receive and decode the SCI for the current SL communication on the subchannel with the lowest frequency, and receive and decode the SCI for the previous SL communication of the transmitting device on the subchannel with a higher frequency.

[0054] In the above scheme, the structure of the physical layer of the SL transport block is changed, so there may be backward compatibility issues, for example, the R16 terminal cannot parse the transport block of the R18 terminal. To this end, in one example, a field for indicating whether there is an additional SCI can be added to the SCI, so that the receiving end device can determine whether to receive and decode the additional SCI based on the field.

[0055] For example, the first SCI may include a first field for indicating whether there is at least one second control channel. The second SCI may also include a first field for indicating whether there is a next second control channel in a frequency direction away from the first control channel. The first field may be located in the first-stage SCI and occupy 1 bit. For example, when the value of the first field of the first SCI is 0, it indicates that there is no second control channel. When the value of the first field of the second SCI is 0, it indicates that there is no next second control channel. It should be understood that the value limit for the first field is not restrictive.

[0056] When the receiving end device determines that the first field of the first SCI is 0, it can be known that there is only one control channel in the time slot. When the receiving end device determines that the first field of the first SCI is 1, it can be known that there are multiple control channels in the time slot, and the receiving end device can receive and decode the second SCI in the subchannel with the index of the subchannel where the first SCI is located plus 1 (corresponding to a higher frequency) until the first field in the second SCI is 0.

[0057] In addition, the second SCI may not include the first field. For example, when the number of the second SCI is determined in a static manner, such as configured or pre-configured by the base station, the second SCI may not include the first field, for example, the base station may configure the same number of second SCIs for each UE, or pre-configure the same number of second SCIs for each UE.

[0058] In the above example, the second SCI has the same format as the first SCI, that is, the format of the SCI for each SL communication is not changed. In another example, considering that the receiving device may only need the resource usage and / or reservation of the communication beam in the previous SL communication, other SCI information not related to resource usage and / or reservation, such as other information of the first-stage SCI, second-stage SCI information, Beta_offset indicator, Number of DMRS port, Modulation and coding scheme, Additional MCS table indicator, PSFCH overhead indication, etc., can be omitted.

[0059] Therefore, in another example, different from the above example, the format of the second SCI can be modified to obtain a new format, for example, the second SCI can only include information about resource usage and / or reservation of the communication beam in the previous SL communication, which can reduce signaling overhead. Without limitation, the second SCI can only include information about resource reservation of the communication beam in the previous SL communication.

[0060] Figure 4 Another example of time slot design according to this embodiment is shown. This example still corresponds to Figure 1 Schematic diagram of the scenario shown in FIG. 1 , in which UE A communicates with UE B via beam 1 and then switches to beam 2 to communicate with UE C. Figure 3 Differently, the SCI transmitted here includes the control information SCI 2 of the current SL communication and the control information SCI 1' of the previous SL communication with a new format, wherein SCI 1' only includes the information of the resource usage and / or reservation status of the SL communication between UE A and UE B.

[0061] For example, the second SCI may further include the first field. In this case, the receiving end device may determine whether it needs to continue receiving and decoding additional resource information based on the first field in the second SCI.

[0062] In addition, the first field may not be included in the second SCI. That is, the first SCI includes the first field for indicating whether the second SCI exists, and the second SCI only includes information on resource usage and / or reservation of one or more communication beams in previous SL communications. In this case, the previous resource usage and / or reservation information can be placed in one second SCI. Alternatively, multiple second SCIs can be set, and the number of second SCIs is determined in a static manner, for example, by configuration or pre-configuration by the base station.

[0063] On the other hand, the first SCI may also include a second field for indicating whether the second SCI includes only information on resource usage and / or reservation of the communication beam in the previous SL communication. In other words, the first SCI may also include a second field indicating whether the second SCI adopts the above-mentioned new format. For example, the second field occupies 1 bit, and when the second field takes a value of 1, it indicates that the second SCI adopts the new format.

[0064] To summarize, according to this embodiment, the electronic device 100 provides resource usage and / or reservation information in previous SL communications, so that the receiving device can obtain as much time-frequency resource usage information as possible, more accurately determine the usage of time-frequency resources, and thus select non-conflicting time-frequency resources for communication, thereby improving the reliability of communication.

[0065] <Second Embodiment>

[0066] Figure 5 A functional module block diagram of an electronic device 200 for a receiving end device of SL communication according to another embodiment of the present application is shown. Figure 5As shown, the electronic device 200 includes: a communication unit 201, configured to receive a control channel in a current beam from a transmitting device when performing beam-based communication with a transmitting device in SL communication; and a determination unit 202, configured to determine an SCI based on the control channel, wherein the SCI includes information on resource usage and / or reservation status of the communication beam in a previous SL communication of the transmitting device.

[0067] The communication unit 201 and the determination unit 202 may be implemented by one or more processing circuits, which may be implemented as a chip or a processor, for example. Figure 5 The various functional units in the electronic device shown in the figure are merely logical modules divided according to the specific functions implemented by them, and are not used to limit the specific implementation method.

[0068] The electronic device 200 is, for example, arranged at the wireless communication terminal side or communicatively connected to the wireless communication terminal. The wireless communication terminal here can be various UEs or user terminals, or communication terminals such as mobile base stations. For example, the electronic device 200 is arranged at the receiving end device side.

[0069] The electronic device 200 can be implemented at the chip level, or it can also be implemented at the device level. For example, the electronic device 200 can work as a wireless communication terminal itself, and can also include external devices such as a memory, a transceiver (not shown), etc. The memory can be used to store programs and related data information that need to be executed by the wireless communication terminal to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., other wireless communication terminals, base stations, core networks, etc.), and the implementation form of the transceiver is not specifically limited here.

[0070] Similar to the first embodiment, the SCI not only includes information on resource usage and / or reservation status of the current beam in this SL communication, but also includes information on resource usage and / or reservation status of the communication beam in the previous SL communication of the transmitting device.

[0071] For example, the SCI includes a first SCI and at least one second SCI, the first SCI including information on resource usage and / or reservation of the current beam, and the at least one second SCI including information on resource usage and / or reservation of the communication beam in the previous SL communication. There may be multiple previous communication beams, and therefore there may be multiple second SCIs.

[0072] The number of second SCIs included in the SCI can be determined statically or dynamically. For example, in the case of static determination, the number of second SCIs included in the SCI can be configured or pre-configured by the base station. In the case of dynamic determination, the transmitting device can determine the number of second SCIs included in the SCI based on the frequency domain size of the time-frequency resources occupied by the current beam-based SL communication and the number of communication beams in the previous SL communication of the transmitting device. In addition, the transmitting device determines which previous beams' SCIs are to be provided as the second SCI to the receiving device. For example, the transmitting device may give priority to the SCI of the most recently used communication beam.

[0073] For example, the SCI includes at least information about resource usage and / or reservation status of a communication beam in an immediately preceding SL communication of the transmitting device.

[0074] For example, the first SCI corresponds to a first control channel, at least one second SCI corresponds to at least one second control channel, the first control channel occupies a first subchannel in the frequency domain, at least one second control channel occupies at least one second subchannel in the frequency domain, and the first subchannel and at least one second subchannel correspond to different frequencies, respectively. Each control channel can occupy 2 or 3 OFDM symbols in the time domain. The first subchannel can be the subchannel with the lowest frequency of the transmission resource, and at least one second subchannel can be a subchannel with increasing frequency starting from the first subchannel. In this way, the receiving device can receive and decode the SCI for this SL communication on the subchannel with the lowest frequency, and receive and decode the SCI for the previous SL communication of the sending device on the subchannel with a higher frequency.

[0075] An example of a time slot including such a control channel has been described in the first embodiment with reference to Figure 3 A description is given and will not be repeated here.

[0076] In the above scheme, the structure of the physical layer of the SL transport block is changed, so there may be backward compatibility issues, for example, the R16 terminal cannot parse the transport block of the R18 terminal. To this end, in one example, a field for indicating whether there is an additional SCI can be added to the SCI, so that the receiving end device can determine whether to receive and decode the additional SCI based on the field.

[0077] For example, the first SCI may include a first field for indicating whether there is at least one second control channel. The second SCI may also include a first field for indicating whether there is a next second control channel in a frequency direction away from the first control channel. The first field may be located in the first-stage SCI and occupy 1 bit. For example, when the value of the first field of the first SCI is 0, it indicates that there is no second control channel. When the value of the first field of the second SCI is 0, it indicates that there is no next second control channel. It should be understood that the value limit for the first field is not restrictive.

[0078] The determination unit 202 is configured to determine the value of the first field in sequence to determine whether there is a next second control channel, until the value of the first field is 0. For example, when the determination unit 202 determines that the first field of the first SCI is 0, it can be known that there is only one control channel in the time slot. When the determination unit 202 determines that the first field of the first SCI is 1, it can be known that there are multiple control channels in the time slot, and the second SCI can be received and decoded in the subchannel with the index of the subchannel where the first SCI is located plus 1 (corresponding to a higher frequency) until the first field in the second SCI is 0.

[0079] In addition, the second SCI may not include the first field. For example, when the number of the second SCI is determined in a static manner, such as configured or pre-configured by the base station, the second SCI may not include the first field, for example, the base station may configure the same number of second SCIs for each UE, or pre-configure the same number of second SCIs for each UE.

[0080] In the above example, the second SCI has the same format as the first SCI, that is, the format of the SCI for each SL communication is not changed. In another example, considering that the receiving device may only need the resource usage and / or reservation of the communication beam in the previous SL communication, other SCI information not related to resource usage and / or reservation can be omitted.

[0081] Therefore, in another example, different from the above example, the format of the second SCI can be modified to obtain a new format, for example, the second SCI can only include information about the resource usage and / or reservation status of the communication beam in the previous SL communication of the transmitting device, which can reduce the signaling overhead. Without limitation, the second SCI can only include information about the resource reservation status of the communication beam in the previous SL communication of the transmitting device.

[0082] An example of a time slot including such a control channel has been described in the first embodiment with reference to Figure 4 A description is given and will not be repeated here.

[0083] For example, the second SCI may further include the first field. In this case, the determination unit 202 may determine whether it is necessary to continue receiving and decoding additional resource information based on the first field in the second SCI.

[0084] In addition, the first field may not be included in the second SCI. That is, the first SCI includes the first field, which is used to indicate whether the second SCI exists, and the second SCI only includes information on the resource usage and / or reservation status of one or more communication beams in previous SL communications of the transmitting device. In this case, the previous resource usage and / or reservation information of the transmitting device can be placed in a second SCI. Alternatively, multiple second SCIs can be set, and the number of second SCIs is determined in a static manner, for example, by configuration or pre-configuration by the base station.

[0085] On the other hand, the first SCI may also include a second field for indicating whether the second SCI includes only information on resource usage and / or reservation of the communication beam in the previous SL communication of the transmitting device. In other words, the first SCI may also include a second field indicating whether the second SCI adopts the above-mentioned new format. For example, the second field occupies 1 bit, and when the second field takes a value of 1, the determination unit 202 determines that the second SCI adopts the new format based on the second field.

[0086] To summarize, according to this embodiment, the electronic device 200 can obtain as much time-frequency resource usage information as possible by acquiring resource usage and / or reservation information in previous SL communications, more accurately determine the usage of time-frequency resources, and thus select non-conflicting time-frequency resources for communication, thereby improving communication reliability.

[0087] <Third Embodiment>

[0088] Figure 6 FIG. 4 shows a functional module block diagram of an electronic device 300 of a transmitting end device for SL communication according to this embodiment. Figure 6 As shown, the electronic device 300 includes: a generation unit 301, configured to generate SCI and carry the SCI on a control channel when performing beam-based communication with a receiving device that communicates with the SL; and a communication unit 302, configured to send a control channel via a first beam and a data channel via a second beam in a time slot, wherein the beam width of the first beam is greater than the beam width of the second beam.

[0089] The generation unit 301 and the communication unit 302 may be implemented by one or more processing circuits, which may be implemented as a chip or a processor, for example. Figure 6The various functional units in the electronic device shown in the figure are merely logical modules divided according to the specific functions implemented by them, and are not used to limit the specific implementation method.

[0090] The electronic device 300 is, for example, arranged at the wireless communication terminal side or communicatively connected to the wireless communication terminal. The wireless communication terminal here can be various UEs or user terminals, or communication terminals such as mobile base stations. For example, the electronic device 100 is arranged at the transmitting end device side.

[0091] The electronic device 300 can be implemented at the chip level, or it can also be implemented at the device level. For example, the electronic device 300 can work as a wireless communication terminal itself, and can also include external devices such as a memory, a transceiver (not shown), etc. The memory can be used to store programs and related data information that need to be executed by the wireless communication terminal to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., other wireless communication terminals, base stations, core networks, etc.), and the implementation form of the transceiver is not specifically limited here.

[0092] In this embodiment, symbol-level beam switching is implemented. Different beams are used to transmit the control channel and the data channel of the same time slot. The first beam used to transmit the control channel has a larger width, thereby providing a larger coverage area; the second beam used to transmit the data channel has a smaller width, thereby providing a higher transmission quality.

[0093] For example, the first beam may be an omnidirectional beam. In this way, similar to R16, the terminal can receive the SCI of the SL communication of the surrounding terminals, thereby understanding the resource usage of the surrounding terminals as a reference when selecting resources to avoid or reduce conflicts.

[0094] Figure 7 An example of a time slot design according to this embodiment is shown. The time slot portion corresponding to the control channel is indicated by being filled with oblique lines, and the portion corresponding to the data channel is indicated by being filled with gray. An interval for AGC is set between the control channel and the data channel, such as an OFDM symbol. It should be understood that this is not restrictive.

[0095] In addition, the SCI here may also be the SCI described in the first embodiment and the second embodiment. For example, the SCI includes a first SCI and at least one second SCI, the first SCI includes information on resource usage and / or reservation of the first beam and the second beam, and the at least one second SCI includes information on resource usage and / or reservation of the communication beam in the previous SL communication of the transmitting device. In other words, the first SCI includes control information for this SL communication, and the second SCI includes control information for the previous SL communication. In this way, the amount of information about resource usage and / or reservation that the receiving device can obtain can be further increased, especially when the first beam is not an omnidirectional beam, this SCI format can serve as a useful supplement.

[0096] Figure 8 An example of time slot design in this case is shown. Among them, SCI 2 represents the control information of this SL communication, and SCI 1 represents the control information of the previous SL communication of the transmitting end device. The relevant descriptions in the first embodiment and the second embodiment are still applicable in this embodiment and will not be repeated here.

[0097] To sum up, according to this embodiment, the electronic device 300 uses a wide beam to send a control channel, so that the receiving device can obtain as much information as possible on the use of time-frequency resources, more accurately determine the use of time-frequency resources, and thus select non-conflicting time-frequency resources for communication, thereby improving the reliability of communication.

[0098] <Fourth Embodiment>

[0099] Fig. 9 A functional module block diagram of an electronic device 400 of a receiving end device for SL communication according to another embodiment of the present application is shown. Fig. 9 As shown, the electronic device 400 includes: a communication unit 401, configured to receive a first beam including a control channel and a second beam including a data channel from a transmitting device in performing beam-based communication with a transmitting device that communicates with SL, wherein the first beam and the second beam are transmitted in one time slot and the width of the first beam is greater than the width of the second beam; and a determination unit 402, configured to determine the SCI based on the control channel in the first beam.

[0100] The communication unit 401 and the determination unit 402 may be implemented by one or more processing circuits, which may be implemented as a chip or a processor, for example. Fig. 9 The various functional units in the electronic device shown in the figure are merely logical modules divided according to the specific functions implemented by them, and are not used to limit the specific implementation method.

[0101] The electronic device 400 is, for example, arranged at the wireless communication terminal side or communicatively connected to the wireless communication terminal. The wireless communication terminal here can be various UEs or user terminals, or communication terminals such as mobile base stations. For example, the electronic device 400 is arranged at the receiving end device side.

[0102] The electronic device 400 can be implemented at the chip level, or it can also be implemented at the device level. For example, the electronic device 200 can work as a wireless communication terminal itself, and can also include external devices such as a memory, a transceiver (not shown), etc. The memory can be used to store programs and related data information that need to be executed by the wireless communication terminal to implement various functions. The transceiver may include one or more communication interfaces to support communication with different devices (e.g., other wireless communication terminals, base stations, core networks, etc.), and the implementation form of the transceiver is not specifically limited here.

[0103] Similar to the third embodiment, in this embodiment, symbol-level beam switching is implemented. Different beams are used to transmit the control channel and the data channel of the same time slot. The first beam used to transmit the control channel has a larger width, thereby providing a larger coverage area; the second beam used to transmit the data channel has a smaller width, thereby providing a higher transmission quality. An interval for AGC can be set between the control channel and the data channel.

[0104] For example, the first beam may be an omnidirectional beam. In this way, similar to R16, the terminal can receive the SCI of the SL communication of the surrounding terminals, thereby understanding the resource usage of the surrounding terminals as a reference when selecting resources to avoid or reduce conflicts.

[0105] In addition, the SCI here may also be the SCI described in the first embodiment and the second embodiment. For example, the SCI includes a first SCI and at least one second SCI, the first SCI includes information on resource usage and / or reservation of the first beam and the second beam, and the at least one second SCI includes information on resource usage and / or reservation of the communication beam in the previous SL communication of the transmitting device. In other words, the first SCI includes control information for this SL communication, and the second SCI includes control information for the previous SL communication. In this way, the amount of information about resource usage and / or reservation that the receiving device can obtain can be further increased, especially when the first beam is not an omnidirectional beam, this SCI format can serve as a useful supplement.

[0106] The example of the relevant time slot design has been given in the third embodiment and will not be repeated here.

[0107] To sum up, according to this embodiment, the electronic device 400 can obtain as much usage information of time-frequency resources as possible by using a wide beam to receive the control channel, more accurately determine the usage of time-frequency resources, and thus select non-conflicting time-frequency resources for communication, thereby improving the reliability of communication.

[0108] <Fifth Embodiment>

[0109] In the process of describing the electronic devices of the receiving device and the transmitting device for SL communication in the above embodiments, it is obvious that some processing or methods are also disclosed. In the following, an outline of these methods is given without repeating some of the details discussed above, but it should be noted that although these methods are disclosed in the process of describing the electronic devices of the receiving device and the transmitting device for SL communication, these methods do not necessarily adopt the components described or are not necessarily performed by those components. For example, the implementation of the electronic devices of the receiving device and the transmitting device for SL communication may be partially or completely implemented using hardware and / or firmware, and the methods of the receiving device and the transmitting device for SL communication discussed below may be completely implemented by a computer-executable program, although these methods may also adopt the hardware and / or firmware of the electronic devices of the receiving device and the transmitting device for SL communication.

[0110] Fig.10 A flowchart of a method for a transmitting end device for SL communication according to an embodiment of the present application is shown, the method comprising: in beam-based communication performed with a receiving end device in SL communication, generating SCI, the SCI including information on resource usage and / or reservation of a communication beam in a previous SL communication of the transmitting end device (S11); and carrying the SCI on a control channel to send to the receiving end device via a current beam (S12). The method can be performed, for example, on the transmitting end device side.

[0111] For example, the SCI includes a first SCI and at least one second SCI, the first SCI includes information on resource usage and / or reservation status of a current beam, and the at least one second SCI includes information on resource usage and / or reservation status of a communication beam in a previous SL communication.

[0112] The first SCI corresponds to a first control channel, the at least one second SCI corresponds to at least one second control channel, the first control channel occupies a first subchannel in the frequency domain, the at least one second control channel occupies at least one second subchannel in the frequency domain, and the first subchannel and the at least one second subchannel correspond to different frequencies, respectively. Each control channel occupies 2 or 3 OFDM symbols in the time domain.

[0113] The first subchannel is a subchannel of the lowest frequency of the transmission resource, and the at least one second subchannel is a subchannel of which the frequency increases sequentially from the first subchannel.

[0114] In one example, the first SCI includes a first field for indicating whether there is at least one second control channel, and the second SCI includes a first field for indicating whether there is a next second control channel in a frequency direction away from the first control channel. The first field is located in the first stage SCI and occupies 1 bit, and when the first field of the first SCI takes a value of 0, it indicates that there is no second control channel, and when the first field of the second SCI takes a value of 0, it indicates that there is no next second control channel.

[0115] In another example, in addition to the first field, the second SCI only includes information on resource usage and / or reservation status of the communication beam in the previous direct link communication.

[0116] In another example, the SCI includes a first SCI and a second SCI, the first SCI includes a first field for indicating whether the second SCI exists, and the second SCI only includes information on resource usage and / or reservation of one or more communication beams in previous SL communications.

[0117] In addition, the first SCI may also include a second field for indicating whether the second SCI only includes information on resource usage and / or reservation status of the communication beam in the previous direct link communication.

[0118] The above method also includes the following steps: determining the number of second SCIs included in the SCI in a dynamic or static manner. For example, the number of second SCIs included in the SCI can be configured or pre-configured by the base station. Alternatively, the number of second SCIs included in the SCI can be determined based on the frequency domain size of the time-frequency resources occupied by the current beam-based SL communication and the number of communication beams in the previous SL communication of the transmitting device.

[0119] The SCI includes at least information about resource usage and / or reservation of a communication beam in an immediately preceding direct link communication of the transmitting device.

[0120] The above method corresponds to the electronic device 100 in the first embodiment, and the relevant detailed description has been given in the first embodiment and will not be repeated here.

[0121] Fig.11A flowchart of a method for a receiving device for SL communication according to another embodiment of the present application is shown, the method comprising: receiving a control channel in a current beam from a transmitting device in beam-based communication with the transmitting device in SL communication (S21); and determining an SCI based on the control channel, the SCI including information on resource usage and / or reservation of a communication beam in a previous SL communication of the transmitting device. The method is performed, for example, on the receiving device side.

[0122] For example, the SCI includes a first SCI and at least one second SCI, the first SCI includes information on resource usage and / or reservation status of a current beam, and the at least one second SCI includes information on resource usage and / or reservation status of a communication beam in a previous direct link communication.

[0123] The first SCI corresponds to a first control channel, the at least one second SCI corresponds to at least one second control channel, the first control channel occupies a first subchannel in the frequency domain, the at least one second control channel occupies at least one second subchannel in the frequency domain, and the first subchannel and the at least one second subchannel correspond to different frequencies, respectively. Each control channel occupies 2 or 3 OFDM symbols in the time domain.

[0124] The first subchannel is a subchannel of the lowest frequency of the transmission resource, and the at least one second subchannel is a subchannel of which the frequency increases sequentially from the first subchannel.

[0125] In one example, the first SCI includes a first field for indicating whether there is at least one second control channel, and the second SCI includes a first field for indicating whether there is a next second control channel in a frequency direction away from the first control channel. The first field is located in the first-stage SCI and occupies 1 bit, and when the first field of the first SCI takes a value of 0, it indicates that there is no second control channel, and when the first field of the second SCI takes a value of 0, it indicates that there is no next second control channel. The method includes sequentially judging the value of the first field to determine whether there is a next second control channel until the value of the first field is 0.

[0126] In another example, in addition to the first field, the second SCI only includes information on resource usage and / or reservation status of a communication beam in a previous SL communication of the transmitting device.

[0127] In another example, the SCI includes a first SCI and a second SCI, the first SCI includes a first field for indicating whether a second SCI exists, and the second SCI only includes information on resource usage and / or reservation of communication beams in one or more previous SL communications of the transmitting device.

[0128] In addition, the first SCI may also include a second field for indicating whether the second SCI only includes information on resource usage and / or reservation status of the communication beam in the previous SL communication of the transmitting device.

[0129] The SCI includes at least information about resource usage and / or reservation status of a communication beam in an immediately preceding direct link communication of the transmitting device.

[0130] The above method corresponds to the electronic device 200 in the second embodiment, and the relevant detailed description has been given in the second embodiment and will not be repeated here.

[0131] Fig.12 A flowchart of a method for a transmitting end device for SL communication according to another embodiment of the present application is shown, the method comprising: in beam-based communication performed with a receiving end device for SL communication, generating SCI and carrying the SCI on a control channel (S31); and transmitting the control channel via a first beam and transmitting the data channel via a second beam in a time slot (S32), wherein the beam width of the first beam is greater than the beam width of the second beam. The method can be performed on the transmitting end device side, for example.

[0132] For example, the first beam is an omni-directional beam. An interval for automatic gain control is set between the control channel and the data channel.

[0133] For example, the SCI includes a first SCI and at least one second SCI, the first SCI includes information on resource usage and / or reservation status of the first beam and the second beam, and the at least one second SCI includes information on resource usage and / or reservation status of the communication beam in the previous SL communication of the transmitting device.

[0134] The above method corresponds to the electronic device 300 in the third embodiment, and the relevant detailed description has been given in the third embodiment and will not be repeated here.

[0135] Fig.13 A flowchart of a method for a receiving device for SL communication according to another embodiment of the present application is shown, the method comprising: in beam-based communication performed with a transmitting device for SL communication, receiving a first beam including a control channel and a second beam including a data channel from the transmitting device (S41), wherein the first beam and the second beam are transmitted in one time slot and the beam width of the first beam is greater than the beam width of the second beam; and determining SCI based on the control channel in the first beam (S42). The method can be performed, for example, on the receiving device side.

[0136] For example, the first beam is an omni-directional beam. An interval for automatic gain control is set between the control channel and the data channel.

[0137] For example, the SCI includes a first SCI and at least one second SCI, the first SCI includes information on resource usage and / or reservation status of the first beam and the second beam, and the at least one second SCI includes information on resource usage and / or reservation status of the communication beam in the previous SL communication of the transmitting device.

[0138] The above method corresponds to the electronic device 400 in the fourth embodiment, and the relevant detailed description has been given in the fourth embodiment and will not be repeated here.

[0139] Note that the above methods can be used in combination or individually.

[0140] The technology of the present disclosure can be applied to various products.

[0141] For example, the electronic devices 100 to 400 may be implemented as various user devices. The user device may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable / dongle-type mobile router, and a digital camera) or a vehicle-mounted terminal (such as a car navigation device). The user device may also be implemented as a terminal for performing machine-to-machine (M2M) communication (also referred to as a machine type communication (MTC) terminal). In addition, the user device may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the above-mentioned terminals.

[0142] [Application examples on user devices]

[0143] (First application example)

[0144] Fig.14 900 is a block diagram showing an example of a schematic configuration of a smartphone 900 to which the technology of the present disclosure can be applied. The smartphone 900 includes a processor 901, a memory 902, a storage device 903, an external connection interface 904, a camera device 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, one or more antenna switches 915, one or more antennas 916, a bus 917, a battery 918, and an auxiliary controller 919.

[0145] The processor 901 may be, for example, a CPU or a system on chip (SoC), and controls the functions of the application layer and other layers of the smartphone 900. The memory 902 includes a RAM and a ROM, and stores data and programs executed by the processor 901. The storage device 903 may include a storage medium such as a semiconductor memory and a hard disk. The external connection interface 904 is an interface for connecting an external device such as a memory card and a universal serial bus (USB) device to the smartphone 900.

[0146] The camera 906 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image. The sensor 907 may include a group of sensors such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor. The microphone 908 converts the sound input to the smart phone 900 into an audio signal. The input device 909 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 910, and receives an operation or information input from a user. The display device 910 includes a screen such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smart phone 900. The speaker 911 converts an audio signal output from the smart phone 900 into sound.

[0147] The wireless communication interface 912 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface 912 may generally include, for example, a BB processor 913 and an RF circuit 914. The BB processor 913 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 914 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 916. Note that although the figure shows a situation where one RF link is connected to one antenna, this is only schematic, and also includes a situation where one RF link is connected to multiple antennas through multiple phase shifters. The wireless communication interface 912 may be a chip module on which the BB processor 913 and the RF circuit 914 are integrated. As shown in FIG. Fig.14 As shown, the wireless communication interface 912 may include multiple BB processors 913 and multiple RF circuits 914. Fig.14 An example is shown in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914 , but the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914 .

[0148] In addition, in addition to the cellular communication scheme, the wireless communication interface 912 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless local area network (LAN) schemes. In this case, the wireless communication interface 912 can include a BB processor 913 and an RF circuit 914 for each wireless communication scheme.

[0149] Each of the antenna switches 915 switches a connection destination of the antenna 916 between a plurality of circuits (eg, circuits for different wireless communication schemes) included in the wireless communication interface 912 .

[0150] Each of the antennas 916 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the wireless communication interface 912 to transmit and receive wireless signals. Fig.14 As shown, the smart phone 900 may include multiple antennas 916. Fig.14 An example is shown in which the smartphone 900 includes a plurality of antennas 916 , but the smartphone 900 may also include a single antenna 916 .

[0151] In addition, the smartphone 900 may include an antenna 916 for each wireless communication scheme. In this case, the antenna switch 915 may be omitted from the configuration of the smartphone 900.

[0152] The bus 917 connects the processor 901, the memory 902, the storage device 903, the external connection interface 904, the camera 906, the sensor 907, the microphone 908, the input device 909, the display device 910, the speaker 911, the wireless communication interface 912, and the auxiliary controller 919 to each other. Fig.14 The various blocks of the smartphone 900 shown are supplied with power, the feed lines being partially shown as dashed lines in the figure. The auxiliary controller 919 operates the minimum necessary functions of the smartphone 900, for example in a sleep mode.

[0153] exist Fig.14In the smart phone 900 shown, the communication unit 102 and transceiver of the electronic device 100, the communication unit 201 and transceiver of the electronic device 200, the communication unit 302 and transceiver of the electronic device 300, and the communication unit 401 and transceiver of the electronic device 400 can be implemented by the wireless communication interface 912. At least part of the functions can also be implemented by the processor 901 or the auxiliary controller 919. For example, the processor 901 or the auxiliary controller 919 can provide the receiving device with information on the resource usage and / or reservation status of the communication beam of the transmitting device in the previous SL communication by executing the functions of the generation unit 101 and the communication unit 102, so that the receiving device can have a more comprehensive understanding of the resource usage status to make appropriate resource selections; the processor 901 or the auxiliary controller 919 can obtain information on the resource usage and / or reservation status of the communication beam of the transmitting device in the previous SL communication by executing the functions of the communication unit 201 and the determination unit 202, so as to have a more comprehensive understanding of the resource usage status to make appropriate resource selections. Make appropriate resource selection; the processor 901 or the auxiliary controller 919 can execute the functions of the generation unit 301 and the communication unit 302 to send the control channel through a wide beam, thereby improving the coverage of the SCI, so that the receiving end device can more comprehensively understand the resource usage status to make appropriate resource selection; the processor 901 or the auxiliary controller 919 can receive the control channel sent through the wide beam by executing the functions of the communication unit 401 and the determination unit 402, and obtain the SCI of the surrounding terminals, so that the receiving end device can more comprehensively understand the resource usage status to make appropriate resource selection.

[0154] (Second application example)

[0155] Fig.15 9 is a block diagram showing an example of a schematic configuration of a car navigation device 920 to which the technology of the present disclosure can be applied. The car navigation device 920 includes a processor 921, a memory 922, a global positioning system (GPS) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, a wireless communication interface 933, one or more antenna switches 936, one or more antennas 937, and a battery 938.

[0156] The processor 921 may be, for example, a CPU or an SoC, and controls a navigation function and another function of the car navigation device 920. The memory 922 includes a RAM and a ROM, and stores data and a program executed by the processor 921.

[0157] The GPS module 924 measures the position (such as latitude, longitude and altitude) of the car navigation device 920 using GPS signals received from GPS satellites. The sensor 925 may include a group of sensors such as a gyro sensor, a geomagnetic sensor and an air pressure sensor. The data interface 926 is connected to, for example, the vehicle network 941 via an unshown terminal and acquires data (such as vehicle speed data) generated by the vehicle.

[0158] The content player 927 reproduces content stored in a storage medium such as a CD and a DVD, which is inserted into the storage medium interface 928. The input device 929 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 930, and receives an operation or information input from a user. The display device 930 includes a screen such as an LCD or an OLED display, and displays an image of a navigation function or reproduced content. The speaker 931 outputs a sound of a navigation function or reproduced content.

[0159] The wireless communication interface 933 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication. The wireless communication interface 933 may generally include, for example, a BB processor 934 and an RF circuit 935. The BB processor 934 may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform various types of signal processing for wireless communication. Meanwhile, the RF circuit 935 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via an antenna 937. The wireless communication interface 933 may also be a chip module on which the BB processor 934 and the RF circuit 935 are integrated. Fig.15 As shown, the wireless communication interface 933 may include multiple BB processors 934 and multiple RF circuits 935. Fig.15 An example is shown in which the wireless communication interface 933 includes a plurality of BB processors 934 and a plurality of RF circuits 935 , but the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935 .

[0160] In addition, in addition to the cellular communication scheme, the wireless communication interface 933 can support other types of wireless communication schemes, such as short-range wireless communication schemes, near field communication schemes, and wireless LAN schemes. In this case, for each wireless communication scheme, the wireless communication interface 933 can include a BB processor 934 and an RF circuit 935.

[0161] Each of the antenna switches 936 switches a connection destination of the antenna 937 between a plurality of circuits included in the wireless communication interface 933 , such as circuits for different wireless communication schemes.

[0162] Each of the antennas 937 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 933 to transmit and receive wireless signals. Fig.15 As shown, the car navigation device 920 may include multiple antennas 937. Fig.15 An example is shown in which the car navigation device 920 includes a plurality of antennas 937 , but the car navigation device 920 may also include a single antenna 937 .

[0163] Furthermore, the car navigation device 920 may include an antenna 937 for each wireless communication scheme. In this case, the antenna switch 936 may be omitted from the configuration of the car navigation device 920.

[0164] Battery 938 is fed via a feed line to Fig.15 The respective blocks of the illustrated car navigation device 920 are supplied with electric power, and feed lines are partially illustrated as dotted lines in the figure. The battery 938 accumulates electric power supplied from the vehicle.

[0165] exist Fig.15 In the illustrated car navigation apparatus 920, the communication unit 102 and the transceiver of the electronic device 100, the communication unit 201 and the transceiver of the electronic device 200, the communication unit 302 and the transceiver of the electronic device 300, and the communication unit 401 and the transceiver of the electronic device 400 may be implemented by the wireless communication interface 933. At least part of the functions may also be implemented by the processor 921. For example, the processor 921 can provide the receiving device with information on the resource usage and / or reservation status of the communication beam of the transmitting device in the previous SL communication by executing the functions of the generation unit 101 and the communication unit 102, so that the receiving device can have a more comprehensive understanding of the resource usage status to make appropriate resource selections; the processor 921 can obtain information on the resource usage and / or reservation status of the communication beam of the transmitting device in the previous SL communication by executing the functions of the communication unit 201 and the determination unit 202, so as to have a more comprehensive understanding of the resource usage status to make appropriate resource selections; the processor 921 can send a control channel through a wide beam by executing the functions of the generation unit 301 and the communication unit 302 to improve the coverage of the SCI, so that the receiving device can have a more comprehensive understanding of the resource usage status to make appropriate resource selections; the processor 921 can receive the control channel sent through a wide beam by executing the functions of the communication unit 401 and the determination unit 402 to obtain the SCI of the surrounding terminals, so that the receiving device can have a more comprehensive understanding of the resource usage status to make appropriate resource selections.

[0166] The technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) 940 including a car navigation device 920, an in-vehicle network 941, and one or more blocks in a vehicle module 942. The vehicle module 942 generates vehicle data (such as vehicle speed, engine speed, and fault information), and outputs the generated data to the in-vehicle network 941.

[0167] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be pointed out that for those skilled in the art, it is understandable that all or any steps or components of the methods and devices of the present disclosure can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in the form of hardware, firmware, software, or a combination thereof. This can be achieved by those skilled in the art using their basic circuit design knowledge or basic programming skills after reading the description of the present disclosure.

[0168] Furthermore, the present disclosure also proposes a program product storing machine-readable instruction codes. When the instruction codes are read and executed by a machine, the method according to the embodiment of the present disclosure can be executed.

[0169] Accordingly, the storage medium for carrying the program product storing the machine-readable instruction code is also included in the disclosure of the present disclosure, including but not limited to a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and the like.

[0170] When the present disclosure is implemented by software or firmware, the data is transferred from a storage medium or a network to a computer (eg, Fig.16 The general-purpose computer 1600 shown in the figure is installed with the programs constituting the software, and when the various programs are installed, the computer can execute various functions, etc.

[0171] exist Fig.16 In the embodiment of the present invention, a central processing unit (CPU) 1601 performs various processes according to a program stored in a read-only memory (ROM) 1602 or a program loaded from a storage section 1608 to a random access memory (RAM) 1603. In the RAM 1603, data required when the CPU 1601 performs various processes and the like is also stored as needed. The CPU 1601, the ROM 1602, and the RAM 1603 are connected to each other via a bus 1604. An input / output interface 1605 is also connected to the bus 1604.

[0172] The following components are connected to the input / output interface 1605: an input section 1606 (including a keyboard, a mouse, etc.), an output section 1607 (including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.), a storage section 1608 (including a hard disk, etc.), a communication section 1609 (including a network interface card such as a LAN card, a modem, etc.). The communication section 1609 performs communication processing via a network such as the Internet. A drive 1610 may also be connected to the input / output interface 1605 as needed. A removable medium 1611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is installed on the drive 1610 as needed, so that a computer program read therefrom is installed in the storage section 1608 as needed.

[0173] In the case where the above-described series of processing is realized by software, a program constituting the software is installed from a network such as the Internet or a storage medium such as the removable medium 1611 .

[0174] It should be understood by those skilled in the art that such storage media is not limited to Fig.16 The removable medium 1611 shown has a program stored therein and is distributed separately from the device to provide the program to the user. Examples of the removable medium 1611 include magnetic disks (including floppy disks (registered trademark)), optical disks (including compact disk read-only memory (CD-ROM) and digital versatile disks (DVD)), magneto-optical disks (including minidiscs (MD) (registered trademark)), and semiconductor memories. Alternatively, the storage medium may be the ROM 1602, a hard disk included in the storage section 1608, or the like, in which the program is stored and distributed to the user together with the device containing them.

[0175] It should also be noted that in the apparatus, method and system of the present disclosure, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present disclosure. In addition, the steps of performing the above series of processes can naturally be performed in chronological order according to the order of description, but do not necessarily need to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0176] Finally, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In addition, in the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, article or device that includes the elements.

[0177] Although the embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings, it should be understood that the embodiments described above are only used to illustrate the present disclosure and do not constitute a limitation of the present disclosure. For those skilled in the art, various modifications and changes can be made to the above embodiments without departing from the essence and scope of the present disclosure. Therefore, the scope of the present disclosure is limited only by the attached claims and their equivalent meanings.

[0178] The present technology may also be configured as follows.

[0179] (1) An electronic device for a transmitting end device for direct link communication, comprising:

[0180] The processing circuit is configured to:

[0181] In beam-based communication performed with the receiving device in direct link communication, generating direct link control information SCI, the SCI including information on resource usage and / or reservation of the communication beam in previous direct link communication of the transmitting device; and

[0182] The SCI is carried on a control channel to be sent to the receiving end device via a current beam.

[0183] (2) An electronic device according to (1), wherein the SCI includes a first SCI and at least one second SCI, the first SCI including information on resource usage and / or reservation status of the current beam, and the at least one second SCI including information on resource usage and / or reservation status of the communication beam in the previous direct link communication.

[0184] (3) An electronic device according to (2), wherein the first SCI corresponds to a first control channel, the at least one second SCI corresponds to at least one second control channel, the first control channel occupies a first subchannel in the frequency domain, the at least one second control channel occupies at least one second subchannel in the frequency domain, and the first subchannel and the at least one second subchannel correspond to different frequencies, respectively.

[0185] (4) The electronic device according to (3), wherein each control channel occupies 2 or 3 orthogonal frequency division multiplexing (OFDM) symbols in the time domain.

[0186] (5) The electronic device according to (3), wherein the first subchannel is a subchannel of the lowest frequency of the transmission resource, and the at least one second subchannel is a subchannel with a frequency increasing sequentially from the first subchannel.

[0187] (6) An electronic device according to (3), wherein the first SCI includes a first field for indicating whether there is at least one second control channel, and the second SCI includes a first field for indicating whether there is a next second control channel in a frequency direction away from the first control channel.

[0188] (7) An electronic device according to (6), wherein the first field is located in the first stage SCI and occupies 1 bit, when the first field of the first SCI takes a value of 0, it indicates that there is no second control channel, and when the first field of the second SCI takes a value of 0, it indicates that there is no next second control channel.

[0189] (8) The electronic device according to (6), wherein, in addition to the first field, the second SCI only includes information on resource usage and / or reservation status of the communication beam in the previous direct link communication.

[0190] (9) An electronic device according to (3), wherein the SCI includes the first SCI and a second SCI, the first SCI includes a first field for indicating whether the second SCI exists, and the second SCI only includes information on resource usage and / or reservation of one or more communication beams in previous direct link communications.

[0191] (10) An electronic device according to (6) or (9), wherein the first SCI also includes a second field for indicating whether the second SCI only includes information on resource usage and / or reservation status of the communication beam in the previous direct link communication.

[0192] (11) The electronic device according to (2), wherein the processing circuit is further configured to determine the number of second SCIs included in the SCI in a dynamic or static manner.

[0193] (12) The electronic device according to (11), wherein the number of second SCIs included in the SCI is configured or pre-configured by a base station.

[0194] (13) An electronic device according to (12), wherein the processing circuit is configured to determine the number of second SCIs included in the SCI based on the frequency domain size of the time-frequency resources occupied by the current beam-based direct link communication and the number of communication beams in the previous direct link communication of the transmitting device.

[0195] (14) The electronic device according to (1), wherein the SCI includes at least information on resource usage and / or reservation status of a communication beam in an immediately preceding direct link communication of the transmitting device.

[0196] (15) An electronic device for a receiving device of a direct link communication, comprising:

[0197] The processing circuit is configured to:

[0198] In beam-based communication performed with a transmitting end device in communication with the through link, receiving a control channel in a current beam from the transmitting end device; and

[0199] Direct link control information SCI is determined based on the control channel, and the SCI includes information on resource usage and / or reservation of a communication beam in a previous direct link communication of the transmitting end device.

[0200] (16) An electronic device according to (15), wherein the SCI includes a first SCI and at least one second SCI, the first SCI including information on resource usage and / or reservation status of the current beam, and the at least one second SCI including information on resource usage and / or reservation status of the communication beam in the previous direct link communication.

[0201] (17) An electronic device according to (16), wherein the first SCI corresponds to a first control channel, the at least one second SCI corresponds to at least one second control channel, the first control channel occupies a first subchannel in the frequency domain, the at least one second control channel occupies at least one second subchannel in the frequency domain, and the first subchannel and the at least one second subchannel correspond to different frequencies, respectively.

[0202] (18) The electronic device according to (17), wherein each control channel occupies 2 or 3 orthogonal frequency division multiplexing (OFDM) symbols in the time domain.

[0203] (19) The electronic device according to (17), wherein the first subchannel is a subchannel of the lowest frequency of the transmission resource, and the at least one second subchannel is a subchannel with a frequency increasing sequentially from the first subchannel.

[0204] (20) An electronic device according to (17), wherein the first SCI includes a first field for indicating whether there is at least one second control channel, and the second SCI includes a first field for indicating whether there is a next second control channel in a frequency direction away from the first control channel.

[0205] (21) The electronic device according to (20), wherein the first field is located in the first-stage SCI and occupies 1 bit, when the first field of the first SCI takes a value of 0, it indicates that there is no second control channel, and when the first field of the second SCI takes a value of 0, it indicates that there is no next second control channel,

[0206] The processing circuit is configured to sequentially determine the value of the first field to determine whether there is a next second control channel, until the value of the first field is 0.

[0207] (22) The electronic device according to (20), wherein, in addition to the first field, the second SCI only includes information on resource usage and / or reservation status of the communication beam in the previous direct link communication of the transmitting device.

[0208] (23) An electronic device according to (17), wherein the SCI includes the first SCI and a second SCI, the first SCI includes a first field for indicating whether a second SCI exists, and the second SCI only includes information on resource usage and / or reservation status of communication beams in one or more previous direct link communications of the transmitting device.

[0209] (24) An electronic device according to (20) or (23), wherein the first SCI also includes a second field for indicating whether the second SCI only includes information on resource usage and / or reservation status of a communication beam in a previous direct link communication of the transmitting device.

[0210] (25) The electronic device according to (15), wherein the SCI includes at least information on resource usage and / or reservation status of a communication beam in an immediately preceding direct link communication of the transmitting device.

[0211] (26) An electronic device for a transmitting end device for direct link communication, comprising:

[0212] The processing circuit is configured to:

[0213] In beam-based communication performed with a receiving end device in communication with the direct link, generating direct link control information SCI and carrying the SCI on a control channel; and

[0214] The control channel is transmitted via a first beam and the data channel is transmitted via a second beam in one time slot, wherein a beam width of the first beam is greater than a beam width of the second beam.

[0215] (27) The electronic device according to (26), wherein the first beam is an omnidirectional beam.

[0216] (28) The electronic device according to (26), wherein an interval for automatic gain control is set between the control channel and the data channel.

[0217] (29) An electronic device according to (26), wherein the SCI includes a first SCI and at least one second SCI, the first SCI including information on resource usage and / or reservation status of the first beam and the second beam, and the at least one second SCI including information on resource usage and / or reservation status of a communication beam in a previous direct link communication of the transmitting device.

[0218] (30) An electronic device for a receiving device of a direct link communication, comprising:

[0219] The processing circuit is configured to:

[0220] In performing beam-based communication with a transmitting end device in communication with the through link, receiving a first beam including a control channel and a second beam including a data channel from the transmitting end device, wherein the first beam and the second beam are transmitted in one time slot and a beam width of the first beam is greater than a beam width of the second beam; and

[0221] Direct link control information SCI is determined based on the control channel in the first beam.

[0222] (31) The electronic device according to (30), wherein the first beam is an omnidirectional beam.

[0223] (32) The electronic device according to (30), wherein an interval for automatic gain control is set between the control channel and the data channel.

[0224] (33) An electronic device according to (30), wherein the SCI includes a first SCI and at least one second SCI, the first SCI including information on resource usage and / or reservation status of the first beam and the second beam, and the at least one second SCI including information on resource usage and / or reservation status of a communication beam in a previous direct link communication of the transmitting device.

[0225] (34) A method for a transmitting end device for direct link communication, comprising:

[0226] In beam-based communication performed with the receiving device in direct link communication, generating direct link control information SCI, the SCI including information on resource usage and / or reservation of the communication beam in previous direct link communication of the transmitting device; and

[0227] The SCI is carried on a control channel to be sent to the receiving end device via a current beam.

[0228] (35) A method for a receiving device for direct link communication, comprising:

[0229] In beam-based communication performed with a transmitting end device in communication with the through link, receiving a control channel in a current beam from the transmitting end device; and

[0230] Direct link control information SCI is determined based on the control channel, and the SCI includes information on resource usage and / or reservation of a communication beam in a previous direct link communication of the transmitting end device.

[0231] (36) A method for a transmitting end device for direct link communication, comprising:

[0232] In beam-based communication performed with a receiving end device in communication with the direct link, generating direct link control information SCI and carrying the SCI on a control channel; and

[0233] The control channel is transmitted via a first beam and the data channel is transmitted via a second beam in one time slot, wherein a beam width of the first beam is greater than a beam width of the second beam.

[0234] (37) A method for a receiving device for direct link communication, comprising:

[0235] In performing beam-based communication with a transmitting end device in communication with the through link, receiving a first beam including a control channel and a second beam including a data channel from the transmitting end device, wherein the first beam and the second beam are transmitted in one time slot and a beam width of the first beam is greater than a beam width of the second beam; and

[0236] Direct link control information SCI is determined based on the control channel in the first beam.

[0237] (38) A computer-readable storage medium having computer-executable instructions stored thereon. When the computer-executable instructions are executed by a processor, the processor executes the method according to any one of (34) to (37).

Claims

1. An electronic device for a transmitting end device of a direct link communication, include: The processing circuit is configured to: In beam-based communication performed with the receiving device in direct link communication, generating direct link control information SCI, the SCI including information on resource usage and / or reservation of the communication beam in previous direct link communication of the transmitting device; as well as The SCI is carried on a control channel to be sent to the receiving end device via a current beam.

2. The electronic device according to claim 1, in, The SCI includes a first SCI and at least one second SCI, wherein the first SCI includes information on resource usage and / or reservation status of the current beam, and the at least one second SCI includes information on resource usage and / or reservation status of the communication beam in the previous direct link communication.

3. An electronic device for a receiving device of a direct link communication, include: The processing circuit is configured to: In beam-based communication performed by a transmitting end device in communication with the through link, receiving a control channel in a current beam from the transmitting end device; as well as Direct link control information SCI is determined based on the control channel, and the SCI includes information on resource usage and / or reservation of a communication beam in a previous direct link communication of the transmitting end device.

4. An electronic device for a transmitting device of a direct link communication, include: The processing circuit is configured to: In beam-based communication performed with a receiving end device in communication with the direct link, generating direct link control information SCI and carrying the SCI on a control channel; as well as The control channel is transmitted via a first beam and the data channel is transmitted via a second beam in one time slot, wherein a beam width of the first beam is greater than a beam width of the second beam.

5. An electronic device for a receiving device of a direct link communication, include: The processing circuit is configured to: In performing beam-based communication with a transmitting end device in communication with the through link, receiving a first beam including a control channel and a second beam including a data channel from the transmitting end device, wherein the first beam and the second beam are transmitted in one time slot and a beam width of the first beam is greater than a beam width of the second beam; and Direct link control information SCI is determined based on the control channel in the first beam.

6. A method for a transmitting end device for direct link communication, include: In beam-based communication performed with the receiving device in direct link communication, generating direct link control information SCI, the SCI including information on resource usage and / or reservation of the communication beam in previous direct link communication of the transmitting device; as well as The SCI is carried on a control channel to be sent to the receiving end device via a current beam.

7. A method for a receiving end device for direct link communication, include: In beam-based communication performed by a transmitting end device in communication with the through link, receiving a control channel in a current beam from the transmitting end device; as well as Direct link control information SCI is determined based on the control channel, and the SCI includes information on resource usage and / or reservation of a communication beam in a previous direct link communication of the transmitting end device.

8. A method for a transmitting device for direct link communication, include: In beam-based communication performed with a receiving end device in communication with the direct link, generating direct link control information SCI and carrying the SCI on a control channel; as well as The control channel is transmitted via a first beam and the data channel is transmitted via a second beam in one time slot, wherein a beam width of the first beam is greater than a beam width of the second beam.

9. A method for a receiving end device for direct link communication, include: In performing beam-based communication with a transmitting end device in communication with the through link, receiving a first beam including a control channel and a second beam including a data channel from the transmitting end device, wherein the first beam and the second beam are transmitted in one time slot and a beam width of the first beam is greater than a beam width of the second beam; and Direct link control information SCI is determined based on the control channel in the first beam.

10. A computer-readable storage medium having computer-executable instructions stored thereon, which, when executed by a processor, causes the processor to execute the method according to any one of claims 6 to 9.

Images