An information transmission method, apparatus, device, and storage medium

Abstract

This disclosure proposes an information transmission method, apparatus, device, and storage medium. The method includes transmitting beam management information via a Physical Direct Control Channel (PSCCH) or a Physical Direct Shared Channel (PSSCH), wherein the beam management information is used to implement beam management between a first UE and a second UE receiving the beam management information. This method can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to information transmission methods, apparatus, devices and storage media. Background Technology

[0002] In communication systems, sidelink (SL) communication is introduced to enable direct communication between user equipment (UEs). When UEs communicate directly via SL, beam pairing between the first and second UEs is usually required to ensure the communication quality of SL communication. Summary of the Invention

[0003] This disclosure proposes an information transmission method, apparatus, device, and storage medium.

[0004] In a first aspect, embodiments of this disclosure provide an information transmission method, including:

[0005] Beam management information is transmitted via the Physical Direct Control Channel (PSCCH) or the Physical Direct Shared Channel (PSSCH), and the beam management information is used to implement beam management between the first UE and the second UE that receives the beam management information.

[0006] In this disclosure, the first UE transmits beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication. Furthermore, in the embodiments of this disclosure, when the first UE transmits beam management information, it reserves at least one beam management information transmission opportunity, and each beam management information transmission opportunity corresponds to an independent transmission beam. This avoids resource collisions when different first UEs transmit beam management information, ensuring that the beam management information can be transmitted stably and without interference, thus ensuring the accuracy of the second UE in determining the optimal beam based on the beam management information.

[0007] Secondly, embodiments of this disclosure provide an information transmission method, including:

[0008] Receive beam management information transmitted via PSCCH or PSSCH, the beam management information being used to implement beam management between the second UE and the first UE that transmitted the beam management information.

[0009] Thirdly, embodiments of this disclosure provide a communication device, including:

[0010] The transceiver module is used to send beam management information through the Physical Direct Control Channel (PSCCH) or the Physical Direct Shared Channel (PSSCH). The beam management information is used to implement beam management between the first UE and the second UE that receives the beam management information.

[0011] Fourthly, embodiments of this disclosure provide a communication device, including:

[0012] The transceiver module is used to receive beam management information transmitted via PSCCH or PSSCH, wherein the beam management information is used to implement beam management between the second UE and the first UE that transmitted the beam management information.

[0013] Fifthly, embodiments of this disclosure provide a communication device including a processor that, when the processor invokes a computer program in memory, executes the method described in the first or second aspect above.

[0014] In a sixth aspect, embodiments of this disclosure provide a communication device including a processor and a memory, the memory storing a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method described in the first or second aspect above.

[0015] In a seventh aspect, embodiments of this disclosure provide a communication device including a processor and an interface circuit. The interface circuit is configured to receive code instructions and transmit them to the processor, which is configured to execute the code instructions to cause the device to perform the methods described in the first or second aspect above.

[0016] Eighthly, embodiments of this disclosure provide a communication system that includes the communication device described in the third or fourth aspect, or the communication device described in the fifth aspect, or the communication device described in the sixth aspect, or the communication device described in the seventh aspect.

[0017] Ninthly, embodiments of the present invention provide a computer-readable storage medium for storing instructions for use by the network device described above, which, when executed, cause the terminal device to perform the method described in the first or second aspect.

[0018] In a tenth aspect, this disclosure also provides a computer program product including a computer program that, when run on a computer, causes the computer to perform the methods described in the first or second aspect above.

[0019] Eleventhly, this disclosure provides a chip system including at least one processor and an interface for supporting network devices in implementing the functions involved in the methods described in the first or second aspect, such as determining or processing at least one of the data and information involved in the aforementioned methods. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for source and slave nodes. The chip system may be composed of chips or may include chips and other discrete devices.

[0020] In a twelfth aspect, this disclosure provides a computer program that, when run on a computer, causes the computer to perform the methods described in the first or second aspect above. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present disclosure;

[0023] Figure 2a A flowchart illustrating an information transmission method provided in another embodiment of this disclosure;

[0024] Figure 2b A transmission pattern for periodically transmitting beam management information, provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic flowchart illustrating an information transmission method provided in yet another embodiment of the present disclosure;

[0026] Figure 4 A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0027] Figure 5 A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0028] Figure 6 A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0029] Figure 7 A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0030] Figure 8 A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0031] Figure 9A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0032] Figure 10 A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0033] Figure 11 A flowchart illustrating an information transmission method provided in yet another embodiment of this disclosure;

[0034] Figure 12 This is a schematic diagram of the structure of a communication device provided in another embodiment of the present disclosure;

[0035] Figure 13 This is a schematic diagram of the structure of a communication device provided in another embodiment of the present disclosure;

[0036] Figure 14 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0037] Figure 15 This is a schematic diagram of the structure of a chip provided in one embodiment of the present disclosure. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this disclosure as detailed in the appended claims.

[0039] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0040] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish signals of the same type from each other. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the words “if” and “suppose” as used herein may be interpreted as “when”, “when”, or “in response to a determination”.

[0041] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0042] To better understand the information transmission method disclosed in this disclosure, the communication system to which this disclosure applies will be described first.

[0043] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure. The communication system may include, but is not limited to, a first UE and a second UE. Optionally, Figure 1 The number and configuration of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of this disclosure. In practical applications, it may include one or more first UEs, or one or more second UEs. Optionally, Figure 1 The communication system shown is an example including a first UE and a second UE.

[0044] It should be noted that the technical solutions of this disclosure can be applied to various communication systems. For example, Long Term Evolution (LTE) systems, 5th Generation (5G) mobile communication systems, 5G New Radio (NR) systems, or other future new mobile communication systems.

[0045] In this disclosure, the UE can be a user-side entity used to receive or transmit signals, such as a mobile phone. It can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The UE can be a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, and so on. This disclosure does not limit the specific technology or device form used by the UE.

[0046] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0047] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0048] The information transmission method, apparatus, device, and storage medium provided in the embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0049] It should be noted that, in this disclosure, unless contradictory, each step in any implementation or embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, the solution after removing some steps in a certain implementation or embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain implementation or embodiment can be arbitrarily interchanged. In addition, the optional methods or examples in a certain implementation or embodiment can be arbitrarily combined; furthermore, the implementations or embodiments can be arbitrarily combined. For example, some or all steps of different implementations or embodiments can be arbitrarily combined, and a certain implementation or embodiment can be arbitrarily combined with the optional methods or examples of other implementations or embodiments. Regarding the notation "A or B", "A and / or B", "at least one of A and B", "A in one case, B in another case", "responding to one case A, responding to another case B", etc., in this disclosure, at least one of the following schemes may be included depending on the situation: A is executed regardless of B, that is, A in some implementations; B is executed regardless of A, that is, B in some implementations; A and B are selectively executed, that is, A and B are selected to be executed in some implementations; A and B are both executed, that is, A and B are executed in some implementations. Furthermore, each element, each row, or each column in the tables involved in this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0050] Figure 2a This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a first UE, such as... Figure 2a As shown in a, the information transmission method may include the following steps:

[0051] Step 201: Send beam management information via the Physical Sidelink Control Channel (PSCCH) or the Physical Sidelink Control Channel (PSSCH).

[0052] Optionally, in one embodiment of this disclosure, the aforementioned "transmitting beam management information via PSCCH or PSSCH" may include any of the following:

[0053] The beam management information is periodically transmitted via PSCCH or PSSCH, and there is at least one opportunity to transmit beam management information within one cycle.

[0054] The beam management information is transmitted non-periodically via PSCCH or PSSCH at at least one opportunity to transmit beam management information.

[0055] Optionally, in one embodiment of this disclosure, the transmission period of the beam management information, the number of beam management information transmission opportunities included in one transmission period, and the number of at least one beam management information transmission opportunity corresponding to non-periodic transmission of beam management information can be determined by at least one of the following methods:

[0056] Determined based on pre-configuration;

[0057] Determined based on predefined criteria;

[0058] Determined based on the base station configuration (e.g., through downlink control information (DCI) signaling configuration);

[0059] The first UE determines this autonomously.

[0060] Optionally, in one embodiment of this disclosure, each beam management information transmission opportunity corresponds to time and frequency resources, wherein at least one beam management information transmission opportunity corresponds to time and frequency resources of the same size. Optionally, in one embodiment of this disclosure, each beam management information transmission opportunity corresponds to time and frequency resources of the same size.

[0061] Optionally, the method for determining the time-frequency resources corresponding to the beam management information transmission opportunity may include at least one of the following:

[0062] The location of time and frequency resources corresponding to each beam management information transmission opportunity is determined based on the DCI of the base station.

[0063] The location of time-frequency resources corresponding to each beam management information transmission opportunity is determined based on the radio resource control (RRC) signaling configuration of the base station;

[0064] The first UE autonomously determines the time-frequency resource location corresponding to each beam management information transmission opportunity, such as by autonomously selecting the time-frequency resource location corresponding to each beam management information transmission opportunity from the resource pool. Optionally, when the first UE autonomously selects the time-frequency resource location corresponding to each beam management information transmission opportunity from the resource pool, it can reuse the resource selection method of SL mode 2 in R16 / 17 for resource selection.

[0065] Optionally, in one embodiment of this disclosure, at least one beam management information transmission opportunity corresponds to an independent transmission beam, and the transmission beam of each beam management information transmission opportunity is used to transmit the beam management information to be transmitted under that beam management information transmission opportunity. Optionally, the transmission beams corresponding to different beam management information transmission opportunities may be the same or different. For example, the transmission beams corresponding to all beam management information transmission opportunities may be the same, or the transmission beams corresponding to all beam management information transmission opportunities may be different, or a portion of the beam management information transmission opportunities may have the same transmission beam, while another portion of the beam management information transmission opportunities may have different transmission beams.

[0066] Optionally, when beam management information is periodically transmitted, the transmission beams corresponding to different beam management information transmission opportunities in the same transmission period may be the same or different, and the transmission beams corresponding to the same beam management information transmission opportunities in different transmission periods may be the same (i.e., the transmission beams corresponding to the i-th beam management information transmission opportunity in different transmission periods are the same).

[0067] Optionally, in one embodiment of this disclosure, the aforementioned beam management information can be used to implement beam management (or beam control) between the first UE and the second UE receiving the beam management information. Optionally, in one embodiment of this disclosure, the beam management can be understood as follows: the first UE determines its optimal transmit beam and / or receive beam, the second UE determines its optimal transmit beam and / or receive beam, and the first UE and the second UE communicate through the determined optimal beam (i.e., a beam pairing process).

[0068] The following section provides a detailed explanation of the principle behind how beam management information enables beam management between the first UE and the second UE.

[0069] Optionally, the beam management information described above may include at least one of the following:

[0070] Transmit beam identifier, which can be used to indicate the transmit beam used by the first UE to transmit beam management information via PSCCH or PSSCH when the beam management information transmission opportunity occurs;

[0071] A first UE identifier, which can be used to indicate a first UE;

[0072] A second UE identifier, which can be used to indicate a second UE;

[0073] The third resource indication information corresponding to the transmitting beam of the beam management information can be used to indicate the receiving time and frequency resources used by the first UE when receiving the information sent by the second UE using the receiving beam corresponding to the transmitting beam of the beam management information.

[0074] Reference signal indication information, which can be used to indicate the transmission parameters of the reference signal associated with the beam management information;

[0075] The number indication information can be used to indicate the total number of transmission opportunities, or the number of transmission opportunities within a period.

[0076] Optionally, in some embodiments, the aforementioned transmit beam identifier may be: the transmit beam identifier of the transmit beam used by the first UE when transmitting beam management information via PSCCH or PSSCH during the first beam management information transmission opportunity; optionally, in other embodiments, the aforementioned transmit beam identifier may include: the transmit beam identifier of the transmit beam used by the first UE when transmitting beam management information via PSCCH or PSSCH during at least one future beam management information transmission opportunity. Wherein, the at least one future beam management information transmission opportunity may include at least one of the following: a first beam management information transmission opportunity following the first beam management information transmission opportunity, and a second beam management information transmission opportunity following the first beam management information transmission opportunity, wherein "the at least one future beam management information transmission opportunity specifically includes the first beam management information transmission opportunity following the first beam management information transmission opportunity, and / or, the second beam management information transmission opportunity following the first beam management information transmission opportunity" is configured by the base station or agreed upon by the protocol. Optionally, in some other embodiments, the aforementioned transmit beam identifier may include: the transmit beam identifier of the transmit beam used by the first UE when transmitting beam management information via PSCCH or PSSCH during all beam management information transmission opportunities.

[0077] Optionally, in one embodiment of this disclosure, the transmit beam identifier can be the sequence number corresponding to the transmit beam. Optionally, the sequence number corresponding to each transmit beam can be determined by at least one of the following methods: pre-configuration, base station configuration, or pre-setting by the first UE. For example, assuming the first UE uses 15 transmit beams to transmit beam management information, the first UE can independently set the sequence numbers of these 15 transmit beams to 0-15. In this case, the sequence number corresponding to each transmit beam can be used to indicate the corresponding transmit beam, where different sequence numbers indicate different transmit beams, and the same sequence number indicates the same transmit beam.

[0078] Optionally, in another embodiment of this disclosure, the transmit beam identifier may be a resource identifier (or resource set identifier) ​​of the time-frequency resource (or time-frequency resource set) of the reference signal. Optionally, the reference signal may be a reference signal associated with beam management information including the transmit beam identifier. In one embodiment of this disclosure, the reference signal associated with the beam management information and the beam management information are transmitted through the same transmit beam during the same beam management information transmission time. Based on this, when the transmit beam identifier included in the beam management information is the resource identifier (resource set identifier) ​​of the time-frequency resource (or time-frequency resource set) of the reference signal associated with the beam management information, the transmit beam of the reference signal can be determined based on the resource identifier (resource set identifier) ​​of the time-frequency resource (or time-frequency resource set) of the reference signal. Furthermore, since the reference signal associated with the beam management information and the beam management information are transmitted through the same beam, indicating the resource identifier (resource set identifier) ​​of the time-frequency resource (or time-frequency resource set) of the reference signal associated with the beam management information is equivalent to synchronously indicating the transmit beam of the beam management information. Optionally, the reference signal may include at least one of the following: SL channel state information reference signal (CSI-RS), PSSCH demodulation reference signal (DMRS), and PSCCH DMRS.

[0079] Optionally, in another embodiment of this disclosure, the transmitting beam identifier may be: the order index of the time-frequency resources used when transmitting beam management information in a beam management information transmission opportunity. Optionally, when beam management information is transmitted periodically, the order index of the time-frequency resources corresponding to each beam management information transmission opportunity within a transmission cycle can be pre-set sequentially. For example, the order index set for the time-frequency resources corresponding to the first beam management information transmission opportunity within a transmission cycle may be 1, and the order index set for the time-frequency resources corresponding to the second beam management information transmission opportunity within a transmission cycle may be 2. When beam management information is transmitted non-periodically, the order index of the time-frequency resources corresponding to all beam management information transmission opportunities can be pre-set sequentially. For example, the order index set for the time-frequency resources corresponding to the first beam management information transmission opportunity may be 1, and the order index set for the time-frequency resources corresponding to the second beam management information transmission opportunity may be 2. Furthermore, the order index of the time-frequency resources corresponding to the beam management information transmission opportunity can be used to indicate: the transmitting beam used under that beam management information transmission opportunity.

[0080] Optionally, in one embodiment of this disclosure, the aforementioned transmit beam identifier may be explicitly included in the beam management information as a bit value.

[0081] Optionally, in another embodiment of this disclosure, the beam management information sent by the first UE may not include the aforementioned transmission beam identifier, but may indicate the transmission beam used when transmitting the beam management information through implicit indication. Optionally, in one embodiment of this disclosure, a correspondence can be set between the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity and the transmission beam used by the beam management information transmission opportunity. When the first UE sends beam management information using PSCCH or PSSCH under the beam management information transmission opportunity, the transmission parameters of PSCCH or PSSCH can be adjusted to the PSCCH or PSSCH transmission parameters corresponding to the transmission beam used by the beam management information transmission opportunity. Then, when the second UE receives the beam management information sent by the first UE through PSCCH or PSSCH, it can determine the transmission beam of the transmitted beam management information based on the transmission parameters of PSCCH or PSSCH. Therefore, it is unnecessary to explicitly send the aforementioned transmit beam identifier to the second UE. Instead, the transmit beam corresponding to the beam management information transmission opportunity can be implicitly indicated through the PSCCH or PSSCH transmission parameters under this beam management information transmission opportunity, thereby saving transmission resources. Optionally, in one embodiment of this disclosure, the aforementioned PSCCH or PSSCH transmission parameters may include at least one of the following:

[0082] PSCCH or PSSCH transmits the location of the corresponding time-frequency resource;

[0083] Location of time-frequency resources for reference signals in PSCCH or PSSCH transmission;

[0084] A sequence of reference signals in PSCCH or PSSCH transmission.

[0085] Optionally, in one embodiment of this disclosure, the aforementioned reference signal sequence can be at least one of a CSI-RS sequence, a PSSCH DMRS sequence, and a PSCCH DMRS sequence. Optionally, the aforementioned CSI-RS sequence can be used for channel estimation, and the aforementioned DMRS sequence can be used for demodulating DMRS signals. Optionally, the network device will configure an initialization sequence number (Identity, ID) for generating each reference signal sequence, and the UE can generate each reference signal sequence based on the configured initialization ID. For example, the UE can use the initialization ID corresponding to the PSSCH DMRS sequence to generate the PSSCH DMRS sequence, and use the initialization ID corresponding to the PSCCH DMRS sequence to generate the PSCCH DMRS sequence.

[0086] Optionally, in one embodiment of this disclosure, the first UE explicitly or implicitly indicates the transmission beams used by each beam management information transmission opportunity, so that the second UE knows which transmission beams the first UE uses under each beam management information transmission opportunity. Furthermore, when the second UE determines the optimal transmission beam of the first UE from the transmission beams of the first UE under each beam management information transmission opportunity, the second UE can explicitly send the transmission beam identifier of the first UE's optimal transmission beam to the first UE, and / or, the second UE can implicitly indicate the transmission beam identifier of the first UE's optimal transmission beam to the first UE. Thus, the first UE can know which beam is its optimal transmission beam, and subsequently, the first UE can use the first UE's optimal transmission beam to send information to the second UE, thereby ensuring SL transmission quality. Additionally, in some embodiments, after the second UE determines the first UE's optimal transmission beam, it can also determine the second UE's optimal receiving beam and / or the optimal transmission beam when the second UE sends signals to the first UE based on channel exclusivity and the first UE's optimal transmission beam. Meanwhile, once the first UE knows its optimal transmit beam, the first UE can also determine its optimal receive beam based on the channel heterogeneity, thereby achieving preliminary beam management between the first UE and the second UE.

[0087] Optionally, in one embodiment of this disclosure, the aforementioned third resource indication information is used to indicate the receiving time-frequency resources used by the first UE when receiving information sent by the second UE using the receiving beam corresponding to the transmitting beam of the beam management information. The transmitting beam of the beam management information can be understood as the beam that transmits the beam management information sent by the first UE, i.e., the transmitting beam of the first UE. The receiving beam corresponding to the transmitting beam of the beam management information is the receiving beam corresponding to the transmitting beam of the beam management information determined based on channel reciprocity, i.e., the receiving beam of the first UE. The receiving beams corresponding to different transmitting beams of the first UE are all different. Optionally, in one embodiment of this disclosure, the receiving time-frequency resources corresponding to the receiving beams of each beam management information transmission beam can be determined by the following method: when beam management information is periodically transmitted, the time-frequency resource position n of the last beam management information transmission opportunity within a transmission cycle is determined; when beam management information is non-periodicly transmitted, the time-frequency resource position n of the last beam management information transmission opportunity is determined; a first preset value T1 and a second preset value T2 are determined; and a window [n+T1, n+T2] is defined based on the first preset value T1 and the second preset value T2. The number K of different transmission beams used sequentially in all beam management information transmission opportunities within a transmission cycle or in all beam management information transmission opportunities during non-periodic transmission is determined; and the window [n+T1, n+T2] is sequentially divided (e.g., equally divided) into K sub-windows, where each sub-window in the K sub-windows corresponds sequentially to K transmission beams, and the sub-window corresponding to the transmission beam of the first UE is the receiving time-frequency resource corresponding to the receiving beam of the first UE's transmission beam.

[0088] For example, suppose beam management information is transmitted periodically. Within one transmission cycle, there are three transmission opportunities for beam management information. The transmitting beam used in the first and second transmission opportunities is the same (transmitting beam #1). The transmitting beam used in the third transmission opportunity is transmitting beam #2. Therefore, the number of different transmitting beams used sequentially in all beam management information transmission opportunities within one transmission cycle can be determined as 2. Then, the window [n+T1, n+T] can be... [2] Divide into two sub-windows, for example, the two sub-windows are: sub-window #1[n+T1, n+T1+(T2-T1) / 2] and sub-window #2[n+T1+(T2-T1) / 2, n+T2]. Sub-window #1 corresponds to the transmitting beam #1. The time-domain resource indicated by sub-window #1 is the receiving time-frequency resource corresponding to the receiving beam corresponding to the transmitting beam #1 of the first UE. That is, information sent by the second UE can be received using the receiving beam corresponding to the transmitting beam #1 on the time-domain resource indicated by sub-window #1. Sub-window #2 corresponds to the transmitting beam #2. The time-domain resource indicated by sub-window #2 is the receiving time-frequency resource corresponding to the receiving beam corresponding to the transmitting beam #2 of the first UE. That is, information sent by the second UE can be received using the receiving beam corresponding to the transmitting beam #2 on the time-domain resource indicated by sub-window #2.

[0089] Optionally, in one embodiment of this disclosure, the aforementioned first preset value T1 and second preset value T2 can be determined based on the indication of the second-stage sidelink control information (SCI). For example, a set of values ​​for T1 or T2 can be pre-configured, and then the specific value of T1 or T2 in the set can be determined by the indication in the second-stage SCI.

[0090] Optionally, in one embodiment of this disclosure, the aforementioned third resource indication information can be used for: the second UE to determine which transmission beam of the second UE to use when it sends a signal to the first UE, and / or the third resource indication information can be used for the second UE to determine which time-frequency resources to use when the second UE uses its optimal transmission beam to send a signal to the first UE.

[0091] Optionally, in one embodiment of this disclosure, the aforementioned "third resource indication information is used for: the second UE to determine which transmit beam of the second UE to use when transmitting a signal to the first UE" can be understood as follows: when the second UE wants to transmit a signal to the first UE, the second UE can determine the time-frequency resource location corresponding to the signal to be transmitted. Optionally, the second UE can determine the time-frequency resource location corresponding to the signal to be transmitted based on at least one of the following methods: dynamic indication of the base station's DCI, configuration of the base station's RRC signaling, and autonomous determination. Afterward, the second UE can determine the target third resource indication information, which can be: the indicated receiving time-frequency resources include the third resource indication information of the time-frequency resources corresponding to the signal to be transmitted. Afterward, the second UE can determine the target third resource indication information based on the target third resource indication information. The first UE's transmit beam corresponding to the third resource indication information is determined by combining the channel exclusivity and the transmit beam of the first UE corresponding to the third resource indication information. Specifically, the second UE can first determine its receive beam under the transmit beam of the first UE corresponding to the third resource indication information based on the channel exclusivity. Then, based on the channel exclusivity, the transmit beam of the second UE corresponding to the receive beam of the second UE is determined as the aforementioned target transmit beam of the second UE. After the target transmit beam of the second UE is determined, the signal to be transmitted can be transmitted using the target transmit beam of the second UE. This ensures that the first UE and the second UE can accurately perform SL transmission using the corresponding beams, thus ensuring the stability of SL transmission.

[0092] Optionally, in one embodiment of this disclosure, the aforementioned "third resource indication information can be used by the second UE to determine which time-frequency resources the second UE needs to use when sending a signal to the first UE using the second UE's optimal transmission beam" can be understood as follows: After determining the second UE's optimal transmission beam, the second UE can determine the third resource indication information corresponding to the first UE's optimal transmission beam; on the time-frequency resources indicated by the third resource indication information corresponding to the first UE's optimal transmission beam, the second UE sends a signal to the first UE using the second UE's optimal transmission beam, thereby ensuring that when the second UE sends a signal to the first UE using the second UE's optimal transmission beam, the time-frequency resources used by the second UE when sending the signal correspond to the time-frequency resources used by the first UE when receiving the signal, thus ensuring accurate SL transmission between the first UE and the second UE and guaranteeing the stability of SL transmission.

[0093] Optionally, in one embodiment of this disclosure, the transmission parameters of the reference signal described above may include at least one of the following:

[0094] The reference signal's sequence number (Identity, ID) used for sequence generation initialization;

[0095] Frequency domain resource configuration parameters of the reference signal (such as the frequency domain resource location of the reference signal);

[0096] The time-domain resource configuration parameters of the reference signal (such as the time-domain resource location of the reference signal);

[0097] The code division multiplexing parameters of the reference signal (such as the orthogonal cover code (OCC) corresponding to the reference signal).

[0098] Optionally, in one embodiment of this disclosure, the second UE can determine which reference signal is associated with the beam management information based on the transmission parameters of the reference signal. Simultaneously, it can successfully receive the corresponding reference signal based on the transmission parameters, allowing the second UE to measure the received reference signal. For example, it can measure the Layer 1 Reference Signal Received Power (L1-RSRP) and / or the Signal-to-Interference-plus-Noise Ratio (SNR) of the reference signal. The system calculates the SINR (Signal-Induced Ratio) and determines the measurement results that meet the conditions (such as the optimal measurement result and / or the measurement result greater than a preset threshold). The transmission beam of the reference signal corresponding to the measurement result that meets the conditions can be considered as the optimal transmission beam of the first UE. Based on the channel exclusivity, the system determines the optimal reception beam of the second UE and / or the optimal transmission beam of the signal transmitted by the second UE to the first UE. At the same time, the second UE can also indicate the optimal transmission beam of the first UE to the first UE, so that the first UE can determine the optimal reception beam of the first UE based on the channel exclusivity and in combination with the optimal transmission beam of the first UE, thereby realizing the initial beam management between the first UE and the second UE.

[0099] As can be seen from the above, in one embodiment of this disclosure, the first UE sends beam management information, and the beam management information includes at least one of the above contents (such as sending beam identifier, third resource indication information, reference signal indication information, etc.), so that the second UE can realize beam management between the first UE and the second UE based on the beam management information.

[0100] Optionally, in one embodiment of this disclosure, the beam management control information may be carried in at least one of the following:

[0101] First-stage SCI;

[0102] Second-stage SCI;

[0103] Medium Access Control Element (MAC CE) signaling.

[0104] Optionally, in one embodiment of this disclosure, the first UE may also send an identifier to the second UE. This identifier can be used to indicate whether beam management information is carried in the PSCCH or PSSCH transmission. Based on this identifier, the second UE can determine whether beam management information is carried in the PSCCH or PSSCH transmission of the first UE. When the second UE determines that beam management information is carried in the PSCCH or PSSCH transmission of the first UE, it can perform corresponding operations. For example, when the identifier indicates that beam management information is carried in the PSCCH or PSSCH transmission of the first UE, the second UE can implement beam management between the first UE and the second UE based on the beam management information. Alternatively, since the time-frequency resource size is the same under each transmission opportunity when beam management information is carried in the PSCCH or PSSCH transmission, the second UE can merge the beam management information transmitted under each transmission opportunity to improve the reception efficiency of the second UE.

[0105] Optionally, in one embodiment of this disclosure, the identifier can be a bit value, wherein when the identifier is a first value (e.g., 0), it can indicate that beam management information is not carried in the PSCCH or PSSCH transmission, and when the identifier is a second value (e.g., 1), it can indicate that beam management information is carried in the PSCCH or PSSCH transmission.

[0106] Optionally, the identifier may be carried in at least one of the following:

[0107] First-stage SCI;

[0108] Second-stage SCI.

[0109] Optionally, in another embodiment of this disclosure, the first UE may also carry beam management information using a specific format of second-stage SCI and / or a specific format of MAC CE signaling. This allows the second UE to directly determine that beam management information is carried in the first UE's PSCCH or PSSCH transmission when it receives the specific format of second-stage SCI and / or MAC CE signaling, and then perform the corresponding operation. For a detailed description of how the second UE performs the corresponding operation when it determines that beam management information is carried in the first UE's PSCCH or PSSCH transmission, please refer to the foregoing embodiments.

[0110] Optionally, in one embodiment of this disclosure, the first UE may further determine the transmission priority of the PSCCH or PSSCH transmission carrying beam management control information, so that the first UE can perform PSCCH or PSSCH transmission carrying beam management control information based on the transmission priority. Optionally, the transmission priority of the PSCCH or PSSCH transmission carrying beam management control information may be determined by at least one of the following methods:

[0111] Based on predefined definitions;

[0112] Based on pre-configuration;

[0113] Determined based on DCI signaling sent by the base station.

[0114] Optionally, in one embodiment of this disclosure, the first UE can send the beam management information to the second UE via at least one of multicast, unicast, and broadcast.

[0115] Optionally, in one embodiment of this disclosure, beam management information can be transmitted simultaneously with the data of the first UE, or it can be transmitted separately.

[0116] Optional, Figure 2b A transmission pattern for periodically transmitting beam management information, as provided in this embodiment of the disclosure, is shown below. Figure 2b As shown, a transmission cycle includes three beam management information transmission opportunities. In the first beam management information transmission opportunity, beam management information is transmitted using beam #1 (BM1) (i.e., beam management occasions in the figure). In the second beam management information transmission opportunity, beam #2 (BM2) is used for transmission. In the third beam management information transmission opportunity, beam #3 (BM3) is used for transmission.

[0117] Optionally, the time-domain resources in this embodiment can be time slots, but slots can also be replaced by other time units such as frames, subframes, Orthogonal Frequency Division Multiplexing (OFDM) symbols, seconds, microseconds, etc. Optionally, the slots mentioned above can be physical slots or logical slots. For example, all slots that can be used for SL transmission can be defined as logical slots, or slots in a resource pool can be defined as logical slots, and slot n+1 can be the next logical slot after slot n.

[0118] Optionally, the beam in this embodiment of the disclosure may refer to a beam, or spatial relation information, spatial setting, spatial Rx parameter, Tx spatial filter, spatial domain receive filters, transmission configuration indication (TCI) status, quasi-co-location (QCL) type D, etc.

[0119] In summary, in the information transmission method provided in this disclosure, the first UE sends beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication. Furthermore, in the embodiments of this disclosure, when the first UE sends beam management information, it reserves at least one beam management information transmission opportunity, and each beam management information transmission opportunity corresponds to an independent transmission beam. This avoids resource collisions when different first UEs send beam management information, ensuring that the beam management information can be transmitted stably and without interference, thereby ensuring the accuracy of the second UE in determining the optimal beam based on the beam management information.

[0120] Figure 3 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a first UE, such as... Figure 3 As shown, the information transmission method may include the following steps:

[0121] Step 301: In the first beam management information transmission opportunity, send first resource indication information, which indicates the time-frequency resource location of at least one future beam management information transmission opportunity.

[0122] Optionally, in one embodiment of this disclosure, the first UE sends first resource indication information during a first beam management information transmission opportunity to indicate the time-frequency resource location of a future beam management information transmission opportunity to the second UE. Based on this first resource indication information, the second UE can determine exactly when the future beam management information transmission opportunity will occur, so that the second UE can subsequently receive the beam management information sent during the future beam management information transmission opportunity at the corresponding time-domain resource location. This ensures accurate reception of the beam management information by the second UE, thereby ensuring the accurate execution of the subsequent beam management process between the second UE and the first UE based on the beam management information.

[0123] Optionally, in one embodiment of this disclosure, the aforementioned first resource indication information may be carried in at least one of the following:

[0124] First-stage SCI;

[0125] Second-stage SCI;

[0126] MAC CE signaling.

[0127] Optionally, the “Frequency domain assignment” and “timeresource assignment” fields can be used to indicate the time and frequency resource locations for at least one future beam management information transmission opportunity.

[0128] For further details regarding step 301, please refer to the description of step 201 above.

[0129] In summary, in the information transmission method provided by this embodiment, the first UE sends first resource indication information during the first beam management information transmission opportunity. This first resource indication information indicates the time-frequency resource location of the future beam management information transmission opportunity. Therefore, the second UE can determine when the future beam management information transmission opportunity will occur based on this first resource indication information. This allows the second UE to subsequently receive the beam management information sent during the future beam management information transmission opportunity at the corresponding time-domain resource location, ensuring accurate reception of the beam management information by the second UE. This, in turn, ensures the accurate execution of the subsequent beam management process between the second UE and the first UE based on the beam management information.

[0130] Figure 4 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a first UE, such as... Figure 4 As shown, the information transmission method may include the following steps:

[0131] Step 401: In response to the periodic transmission of beam management information, a second resource indication information is transmitted during the first beam management information transmission opportunity. The second resource indication information is used to indicate the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle.

[0132] Optionally, in one embodiment of this disclosure, the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle can be understood as: a beam management information transmission opportunity whose order in the next transmission cycle is the same as the order of the first beam management information transmission opportunity in the current transmission cycle. For example, assuming the first beam management information transmission opportunity is the third beam management information transmission opportunity in the current transmission cycle, then the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle is: the third beam management information transmission opportunity in the next transmission cycle.

[0133] Optionally, in one embodiment of this disclosure, since the time-frequency resource size corresponding to each beam management information transmission opportunity is the same, the second resource indication information may only indicate the period length value of the transmission period. In this case, when the first UE indicates the period length value under the first beam management information transmission opportunity, the second UE can determine the time-frequency resource position of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission period by adding the period length value to the time-frequency resource corresponding to the first beam management information transmission opportunity.

[0134] Optionally, the aforementioned second resource indication information may be carried in at least one of the following:

[0135] First-stage SCI;

[0136] Second-stage SCI;

[0137] MAC CE signaling.

[0138] Optionally, the "resource reservation period" field can be used to indicate the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle.

[0139] Optionally, in one embodiment of this disclosure, a set of period length values ​​#1 can be pre-configured. For example, the set of period length values ​​#1 can be pre-configured through the higher-layer parameter sl-ResourceReservePeriodList (sl-Resource Reserve Period List). The set of period length values ​​#1 can be period values ​​configured for periodic resource reservation for R16 / 17 / 18SL. It can be applicable to the transmission period resource reservation when transmitting beam management information, or it can be applicable to the transmission period resource reservation when transmitting other SLs. In addition, the second resource indication information can specifically indicate which value in the set of period lengths #1 is the transmission period when the first UE periodically transmits beam management information.

[0140] Optionally, in another embodiment of this disclosure, a set of cycle length values ​​#2 can be independently configured only for the transmission cycle resource reservation during beam management information transmission. When two sets of cycle length values ​​are configured (i.e., both set of cycle length values ​​#1 and set of cycle length values ​​#2 are configured simultaneously), the first stage SCI or the second stage SCI can indicate which set of cycle length values ​​is used. Furthermore, the second resource indication information can indicate which value in the set of cycle lengths is used for the transmission cycle when the first UE periodically transmits beam management information.

[0141] Optionally, in one embodiment of this disclosure, the first UE sends second resource indication information during the first beam management information transmission opportunity to indicate to the second UE the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle. Based on this second resource indication information, the second UE can determine the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle. This allows the second UE to subsequently receive the beam management information sent by the first beam management information transmission opportunity in the next transmission cycle at the corresponding time-domain resource location, ensuring accurate reception of the beam management information by the second UE. This, in turn, ensures the accurate execution of the subsequent beam management process between the second UE and the first UE based on the beam management information.

[0142] For other related information such as "opportunities for beam management information transmission and future opportunities for beam management information transmission", please refer to the description in step 201 above.

[0143] In summary, in the information transmission method provided by this embodiment, the first UE sends second resource indication information during the first beam management information transmission opportunity to indicate to the second UE the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle. Based on this second resource indication information, the second UE can determine the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle. This allows the second UE to subsequently receive the beam management information sent by the first beam management information transmission opportunity in the next transmission cycle at the corresponding time-domain resource location, ensuring accurate reception of the beam management information by the second UE. This, in turn, ensures the accurate execution of the subsequent beam management process between the second UE and the first UE based on the beam management information.

[0144] Figure 5 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a second UE, such as... Figure 5 As shown, the information transmission method may include the following steps:

[0145] Step 501: Receive beam management information sent via PSCCH or PSSCH. This beam management information is used to implement beam management between the second UE and the first UE that sent the beam management information.

[0146] For a detailed description of step 501, please refer to the foregoing embodiments.

[0147] In summary, in the information transmission method provided in this embodiment, the first UE sends beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication.

[0148] Figure 6 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a second UE, such as... Figure 6 As shown, the information transmission method may include the following steps:

[0149] Step 601: Receive first resource indication information sent during the first beam management information transmission opportunity, wherein the first resource indication information indicates the time-frequency resource location of at least one future beam management information transmission opportunity.

[0150] For a detailed description of step 601, please refer to the foregoing embodiments.

[0151] In summary, in the information transmission method provided by this embodiment, the first UE sends first resource indication information during the first beam management information transmission opportunity. This first resource indication information indicates the time-frequency resource location of the future beam management information transmission opportunity. Therefore, the second UE can determine when the future beam management information transmission opportunity will occur based on this first resource indication information. This allows the second UE to subsequently receive the beam management information sent during the future beam management information transmission opportunity at the corresponding time-domain resource location, ensuring accurate reception of the beam management information by the second UE. This, in turn, ensures the accurate execution of the subsequent beam management process between the second UE and the first UE based on the beam management information.

[0152] Figure 7 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a second UE, such as... Figure 7 As shown, the information transmission method may include the following steps:

[0153] Step 701: Receive the second resource indication information sent by the first beam management information transmission opportunity. The second resource indication information is used to indicate the time-frequency resource position of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle.

[0154] For a detailed description of step 701, please refer to the foregoing embodiments.

[0155] In summary, in the information transmission method provided by this embodiment, the first UE sends second resource indication information during the first beam management information transmission opportunity to indicate to the second UE the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle. Based on this second resource indication information, the second UE can determine the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle. This allows the second UE to subsequently receive the beam management information sent by the first beam management information transmission opportunity in the next transmission cycle at the corresponding time-domain resource location, ensuring accurate reception of the beam management information by the second UE. This, in turn, ensures the accurate execution of the subsequent beam management process between the second UE and the first UE based on the beam management information.

[0156] Figure 8 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a second UE, such as... Figure 8 As shown, the information transmission method may include the following steps:

[0157] Step 801: Determine the correspondence between the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity and the transmission beam used by the beam management information transmission opportunity.

[0158] Optionally, in one embodiment of this disclosure, the method by which the second UE determines the correspondence in step 801 may include at least one of the following:

[0159] Determined based on predefined criteria;

[0160] Determined based on pre-configuration;

[0161] Determined based on the agreement;

[0162] Based on the transmission determination of the first UE, the first UE will autonomously determine the corresponding relationship.

[0163] Step 802: Based on the correspondence, determine the transmit beam implicitly indicated by the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity.

[0164] For a detailed description of steps 801-802, please refer to the above embodiments.

[0165] In summary, in the information transmission method provided in this embodiment, the first UE sends beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication.

[0166] Figure 9 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a second UE, such as... Figure 9 As shown, the information transmission method may include the following steps:

[0167] Step 901: In response to the need to send a signal to the first UE, determine the location of the time-frequency resource corresponding to the signal to be sent;

[0168] Step 902: Determine the target third resource indication information, wherein the target third resource indication information is: the third resource indication information of the time and frequency resource corresponding to the signal to be transmitted is included in the indicated receiving time and frequency resource;

[0169] Step 903: Determine the target transmission beam of the second UE based on the transmission beam corresponding to the target third resource indication information;

[0170] Step 904: Transmit the signal to be transmitted using the target transmission beam of the second UE.

[0171] For a detailed description of steps 901-904, please refer to the above embodiments.

[0172] In summary, in the information transmission method provided in this disclosure, the first UE sends beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication. Furthermore, in the embodiments of this disclosure, when the first UE sends beam management information, it reserves at least one beam management information transmission opportunity, and each beam management information transmission opportunity corresponds to an independent transmission beam. This avoids resource collisions when different first UEs send beam management information, ensuring that the beam management information can be transmitted stably and without interference, thereby ensuring the accuracy of the second UE in determining the optimal beam based on the beam management information.

[0173] Figure 10 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a second UE, such as... Figure 10 As shown, the information transmission method may include the following steps:

[0174] Step 1001: Measure the reference signal transmitted by each beam management information transmission opportunity;

[0175] Step 1002: Based on the measurement results, select the optimal transmission beam for the first UE from the transmission beams corresponding to each beam management information transmission opportunity;

[0176] Step 1003: Determine the optimal receiving beam of the second UE and / or the optimal transmitting beam of the second UE to transmit signals to the first UE based on the optimal transmitting beam of the first UE.

[0177] For a detailed description of steps 1001-1003, please refer to the above embodiments.

[0178] In summary, in the information transmission method provided in this disclosure, the first UE sends beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication. Furthermore, in the embodiments of this disclosure, when the first UE sends beam management information, it reserves at least one beam management information transmission opportunity, and each beam management information transmission opportunity corresponds to an independent transmission beam. This avoids resource collisions when different first UEs send beam management information, ensuring that the beam management information can be transmitted stably and without interference, thereby ensuring the accuracy of the second UE in determining the optimal beam based on the beam management information.

[0179] Figure 11 This is a flowchart illustrating an information transmission method provided in an embodiment of the present disclosure. The method is executed by a second UE, such as... Figure 11 As shown, the information transmission method may include the following steps:

[0180] Step 1001: Determine the third resource indication information corresponding to the optimal transmission beam of the first UE that corresponds to the optimal transmission beam of the second UE;

[0181] Step 1002: On the time-frequency resources indicated by the third resource indication information corresponding to the optimal transmission beam of the first UE, a signal is transmitted to the first UE using the optimal transmission beam of the second UE.

[0182] For a detailed description of steps 1101-1103, please refer to the above embodiments.

[0183] In summary, in the information transmission method provided in this disclosure, the first UE sends beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication. Furthermore, in the embodiments of this disclosure, when the first UE sends beam management information, it reserves at least one beam management information transmission opportunity, and each beam management information transmission opportunity corresponds to an independent transmission beam. This avoids resource collisions when different first UEs send beam management information, ensuring that the beam management information can be transmitted stably and without interference, thereby ensuring the accuracy of the second UE in determining the optimal beam based on the beam management information.

[0184] The following is an example description of an embodiment of this disclosure:

[0185] NR stands for Synchronization System. The paper uses slot as an example, but slot can also be replaced by other time units such as frame, subframe, OFDM symbol, second, microsecond, etc. The slot in the paper can be a physical slot or a logical slot. For example, all slots that can be used for SL transmission can be defined as logical slots, or slots in a resource pool can be defined as logical slots, and slot n+1 is the next logical slot after slot n.

[0186] Here, beam refers to spatial relation information, spatial setting, spatial Rx parameter, Tx spatial filter, spatial domain receive filters, TCI (transmission configuration indication) status, QCL (quasi-co-location) type D, etc.

[0187] 1. Users transmit beam management-related control information through the PSCCH / PSSCH channels.

[0188] The beam management control information can be transmitted periodically or aperiodically; it can be transmitted along with UE data or separately. The beam management control information can be carried through the first-stage SCI, the second-stage SCI, and / or MAC CE.

[0189] When beam management control information is sent periodically, there can be multiple beam management control information transmission opportunities within the same period, and the time and frequency resources of the transmission opportunities are equal.

[0190] The beam identifier used for PSCCH / PSSCH transmissions in different transmission opportunities within a cycle is different; the beam identifier is described in detail in the beam management information below.

[0191] The PSCCH / PSSCH transmitted by the current transport opportunity can indicate the time and frequency resource location of the next one or two transport opportunities. The PSCCH / PSSCH transmissions within a transport opportunity in one cycle can indicate the time and frequency resource location of the corresponding transport opportunity in the next cycle, and the transmission beam of the PSCCH / PSSCH transmitted within the corresponding transport opportunity is the same. Unlike the resource reservation of the current SL, when beam management control information is carried through the MAC CE, different transport opportunities within one cycle can correspond to different TB of transmission.

[0192] When beam management control information is transmitted non-periodically, multiple beam management control information transmission opportunities can be used, and the time and frequency resources of the transmission opportunities are equal.

[0193] The beam identifiers used for PSCCH / PSSCH transmissions within different transmission opportunities may be the same or different; the beam identifiers are described in detail in the beam management information below.

[0194] The PSCCH / PSSCH transmitted by the current transmission opportunity can indicate the time and frequency resource location for the next one or two transmission opportunities. Unlike the resource reservation of the current SL, when beam management control information is carried through the MAC CE, different transmission opportunities within a cycle can correspond to different TB of transmission.

[0195] The time and frequency resources of the transmission opportunity can be determined by receiving downlink DCI dynamic indication from the base station, receiving downlink RRC signaling configuration from the base station, or by the UE making autonomous resource selection.

[0196] When the UE performs autonomous resource selection, it can reuse the sidelink mode2 resource selection of R16 / 17 for resource selection;

[0197] The transmission priority of the PSCCH / PSSCH carrying the beam management control information can be predefined, preconfigured, or obtained by receiving downlink control signaling from the base station.

[0198] The beam management control information includes at least one of the following or a combination thereof.

[0199] Identification information used to identify different beams transmitted by the same UE; for example, the identification information is a sequence number from 0 to 15, with the same sequence number indicating that the same beam is used for transmission; or the identification information is an identifier of a resource (set) of reference signals used for beam management; or the identification information is an order index of the time-frequency resources used to transmit the beam management information within a cycle.

[0200] The beam identification information can be indicated by different bits in the information field of the beam management related control information, or by sending relevant parameters of the PSCCH / PSSCH carrying beam management control information, such as the time and frequency resource location used by the PSCCH / PSSCH, the time and frequency location or sequence of the reference signal in the PSCCH / PSSCH, etc.

[0201] Identification information used to identify the first UE;

[0202] Identification information for the target second UE used to indicate the beam management control information;

[0203] Information indicating the time-domain resource location for receiving the sidelink signal corresponding to the current transmitting beam; at the time-domain resource location, the UE transmitting the beam management control information will use the receiving beam corresponding to the current transmitting beam for reception. When another UE (UE B) needs to transmit sidelink signals / channels such as PSCCH / PSSCH / PSFCH to the UE (UE A) transmitting the beam management control information, it can determine the transmitting beam that should be used for the sidelink transmission based on which beam of UE A the time-frequency resource location occupied by its signal to be transmitted is located in; or, UE B can first determine a suitable transmitting beam(s) based on measurements of different transmitting beams of UE A, and select the time-frequency resource within the corresponding time-frequency location for sidelink transmission.

[0204] Information indicating the beam management reference signal associated with the beam management control information, such as the ID of the reference signal for sequence generation initialization, frequency domain resource configuration parameters, time domain resource configuration parameters, code division multiplexing parameters, etc. The reference signal may be an SL CSI-RS, a PSSCH DMRS, or a PSCCH DMRS.

[0205] Information indicating the number of transmission opportunities. When transmission is periodic, it indicates the number of transmission opportunities within one period; otherwise, it indicates the total number of transmission opportunities.

[0206] Optionally, the first-stage SCI or the second-stage SCI may carry an identifier indicating whether the PSCCH / PSSCH transmission carries beam management control information. For example, the 1st-stage SCI or the 2nd-stage SCI may contain a 1-bit indicator, with different values ​​corresponding to whether beam management control information is carried; or different 2nd-stage SCI formats or MAC CEs may be used to distinguish whether beam management control information is carried.

[0207] Example 1: Beam management control information is carried on the MAC CE and transmitted via PSSCH as part of the MAC PDU; in this case, the beam management control information can be transmitted separately from the UE data.

[0208] A transmission period is (pre)configured for individually transmitted beam management control information. Within one period, there are multiple beam management control information transmission opportunities. Each beam management control information transmission opportunity occupies the same amount of time and frequency resources. The beam management control information and associated reference signals for beam management are transmitted within these time and frequency resources. The number of transmission opportunities within one period can be predefined, (pre)configured, or configured via base station downlink control signaling.

[0209] Within a cycle, the PSCCH / PSSCH transmitted in the nth transmission opportunity can indicate the time-frequency resource location of the (n+1)th transmission opportunity, or the time-frequency resource locations of the (n+1)th and (n+2)th transmission opportunities, through the "Frequency domain assignment" and "time resource assignment" fields included in the first-stage SCI. Whether it indicates one or two transmission opportunities is determined by the resource pool configuration. Since the beam management control information transmitted on different transmission opportunities differs, the physical layer TB transmitted on different transmission opportunities is also different. Because the non-periodic reservation of sidelink data can only be used for repetition transmissions of the same TB, the information in the first-stage or second-stage SCI can be used to determine whether the PSCCH / PSSCH transmission is a beam management information PSCCH / PSSCH transmission.

[0210] The PSCCH / PSSCH carrying beam management information transmitted in the m-th period can be indicated by the "resource reservation period" field in the first-stage SCI to indicate the corresponding transmission opportunity in the next period. This field indicates the period value selected from a (pre-)configured set of period values. This set of period values ​​can be the period values ​​configured for periodic resource reservation for R16 / 17 / 18SL, i.e., the set of period values ​​indicated by the higher-layer parameter sl-ResourceReservePeriodList; alternatively, a separate set of independent period values ​​can be (pre-configured) for the PSCCH / PSSCH transmission of beam management information using independent higher-layer parameters. When two sets of period values ​​are configured, it can be determined whether the PSCCH / PSSCH transmission is for beam management information by the information indicated in the first-stage SCI or the second-stage SCI.

[0211] UE B transmits PSCCH / PSSCH carrying beam management information to UE A. Based on measurements of the beam management reference signal, UE B determines a suitable beam or set of beams. Specific criteria for this determination can be based on the measured L1-RSRP / SINR values ​​of different beams and corresponding measurement thresholds, or it can be determined according to the specific implementation of the UE; no restrictions are placed here. For the selected transmit beam of UE A, UE B can determine the most suitable receive beam by measuring multiple cycles. UE B can also utilize channel exclusivity to determine the corresponding transmit beam (transmit with the same spatial domain transmission filter used for the reception of the reference signal) and send unicast data to UE A. See the example above. Figure 2b .

[0212] Example 2: A one-to-one connection needs to be established between UE A and UE B for unicast communication. UE A sends a PSCCH / PSSCH to UE B. The "resource reservation period" indicated by the 1st stage SCI in the PSCCH / PSSCH has a period value of 0, meaning that periodic beam management information is not transmitted. The PSSCH is repetitively transmitted for K repetitions. The physical layer TB is the same for each repetition. Beam management information is carried through the 2nd stage SCI.

[0213] For repetition transmissions carrying beam management information, the decision to proceed with the next repetition transmission is independent of HARQ-ACK feedback. Different repetition transmissions can use the same or different transmit beams; for example, in a total of 8 repetition transmissions, divided into 4 groups, with two repetition transmissions per group, repetition transmissions within the same group correspond to the same transmit beam, while repetition transmissions in different groups correspond to different transmit beams; or vice versa. The UEB determines whether the transmit beam used by UE A is the same by receiving the beam identifier information contained in the 2nd SCI. UE B selects the appropriate transmit beam for UE A and its own corresponding receive beam by measuring the corresponding beam reference signal. UE B can utilize channel exclusivity to determine the transmit beam corresponding to the receive beam and transmit data to UE A.

[0214] Example 3: Based on Example 1 or 2, the beam management information includes an indication of the receiving time-domain resource location corresponding to the transmitting beam. At the corresponding time-domain resource location, UE A uses the receiving beam corresponding to the transmitting beam to receive PSCCH / PSSCH.

[0215] For example, for periodic transmissions, assume the slot where the last beam management information transmission opportunity is located within a period is slot n; for non-periodic transmissions, assume the slot where the last beam management information transmission opportunity is located is slot n; define a window [n+T1, n+T2] as the time window where the beam management information takes effect; assuming there are K different beams' PSCCH / PSSCH transmissions or K transmission opportunities within a period, then the window can be divided into K equal parts, each corresponding to one of the K transmitting beams. Each part of the time-domain resource is the receiving time-domain resource corresponding to the transmitting beam. Here, the time-frequency domain resource position of the beam management information transmission opportunity can be understood as an indication of the receiving time-domain position.

[0216] Alternatively, the values ​​of T1 or T2 can be a (pre-)configured set of values, with the specific set of values ​​determined by an instruction in the second-stage SCI.

[0217] Figure 12 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure, as shown below. Figure 12 As shown, the device may include:

[0218] The transceiver module is used to send beam management information through the Physical Direct Control Channel (PSCCH) or the Physical Direct Shared Channel (PSSCH). The beam management information is used to implement beam management between the first UE and the second UE that receives the beam management information.

[0219] In summary, in the communication apparatus provided in this disclosure embodiment, the first UE transmits beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication. Furthermore, in the embodiments of this disclosure, when the first UE transmits beam management information, it reserves at least one beam management information transmission opportunity, and each beam management information transmission opportunity corresponds to an independent transmission beam. This avoids the situation where "resource collisions occur when different first UEs transmit beam management information," ensuring that the beam management information can be transmitted stably and without interference, thereby ensuring the accuracy of the subsequent second UE in determining the optimal beam based on the beam management information.

[0220] Optionally, in one embodiment of this disclosure, the transceiver module is used for:

[0221] The beam management information is sent periodically, and there is at least one opportunity to transmit beam management information within one cycle.

[0222] Optionally, in one embodiment of this disclosure, the transceiver module is used for:

[0223] The beam management information is transmitted non-periodically at at least one opportunity to transmit beam management information.

[0224] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0225] The location of the time-frequency resource corresponding to the at least one beam management information transmission opportunity is determined, wherein the time-frequency resources corresponding to the at least one beam management information transmission opportunity are of the same size.

[0226] Optionally, in one embodiment of this disclosure, the device is further used for at least one of the following:

[0227] The location of time-frequency resources corresponding to each beam management information transmission opportunity is determined based on the downlink control information (DCI) of the base station.

[0228] Based on the radio resource control (RRC) signaling configuration of the base station, the time and frequency resource locations corresponding to each beam management information transmission opportunity are determined;

[0229] The first UE autonomously determines the time and frequency resource locations corresponding to each beam management information transmission opportunity.

[0230] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0231] In the first beam management information transmission opportunity, a first resource indication information is transmitted, the first resource indication information indicating the time-frequency resource location of at least one future beam management information transmission opportunity.

[0232] Optionally, in one embodiment of this disclosure, the future beam management information transmission opportunity includes at least one of the following:

[0233] The first beam management information transmission opportunity after the first beam management information transmission opportunity;

[0234] The second beam management information transmission opportunity following the first beam management information transmission opportunity.

[0235] Optionally, in one embodiment of this disclosure, in response to periodically transmitting the beam management information, the apparatus is further configured to:

[0236] In the first beam management information transmission opportunity, a second resource indication information is sent. The second resource indication information is used to indicate the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle.

[0237] Optionally, in one embodiment of this disclosure, the transmit beam used by the first beam management information transmitter is the same as the transmit beam used by the beam management information transmitter in the next transmission cycle.

[0238] Optionally, in one embodiment of this disclosure, the at least one beam management information transmitter corresponds to an independent transmission beam.

[0239] Optionally, in one embodiment of this disclosure, the beam management information includes at least one of the following:

[0240] Transmit beam identifier, the transmit beam identifier being used to indicate the transmit beam used by the first UE to transmit the beam management information via PSCCH or PSSCH during a beam management information transmission opportunity;

[0241] A first UE identifier, which is used to indicate the first UE;

[0242] The second UE identifier is used to indicate the second UE;

[0243] The third resource indication information corresponding to the transmitting beam of the beam management information is used to indicate the receiving time and frequency resources used by the first UE when receiving the information sent by the second UE using the receiving beam corresponding to the transmitting beam of the beam management information.

[0244] Reference signal indication information, which is used to indicate the transmission parameters of the reference signal associated with the beam management information;

[0245] The number indication information is used to indicate the total number of transmission opportunities, or the number of transmission opportunities in a period.

[0246] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0247] The reference signal associated with the beam management information is transmitted during the first beam management information transmission opportunity.

[0248] Optionally, in one embodiment of this disclosure, there is a correspondence between the PSCCH or PSSCH transmission parameters of the beam management information transmission opportunity and the transmission beam used by the beam management information transmission opportunity;

[0249] The PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity implicitly indicate the transmission beam corresponding to the beam management information transmission opportunity.

[0250] Optionally, in one embodiment of this disclosure, the PSCCH or PSSCH transmission parameters include at least one of the following:

[0251] PSCCH or PSSCH transmits the location of the corresponding time-frequency resource;

[0252] Location of time-frequency resources for reference signals in PSCCH or PSSCH transmission;

[0253] A sequence of reference signals in PSCCH or PSSCH transmission.

[0254] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0255] A transmission identifier is used to indicate whether the beam management information is carried in the PSCCH or PSSCH transmission.

[0256] Optionally, in one embodiment of this disclosure, the beam management control information is carried in at least one of the following:

[0257] Phase 1 side link control information (SCI);

[0258] Second-stage SCI;

[0259] Media Access Control Layer Control Unit (MAC CE) signaling.

[0260] Optionally, in one embodiment of this disclosure, the identifier is carried in at least one of the following:

[0261] First-stage SCI;

[0262] Second-stage SCI.

[0263] Figure 13 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure, as shown below. Figure 13 As shown, the device may include:

[0264] The transceiver module is used to receive beam management information transmitted via PSCCH or PSSCH, wherein the beam management information is used to implement beam management between the second UE and the first UE that transmitted the beam management information.

[0265] In summary, in the communication device provided in this disclosure embodiment, the first UE transmits beam management information via PSCCH or PSSCH. This beam management information is used to implement beam management between the first UE and the second UE receiving the beam management information. Therefore, the method of this disclosure can be used to implement beam management between UEs in SL communication scenarios, thereby ensuring the communication quality of SL and improving the stability of SL communication. Furthermore, in the embodiments of this disclosure, when the first UE transmits beam management information, it reserves at least one beam management information transmission opportunity, and each beam management information transmission opportunity corresponds to an independent transmission beam. This avoids the situation where "resource collisions occur when different first UEs transmit beam management information," ensuring that the beam management information can be transmitted stably and without interference, thereby ensuring the accuracy of the subsequent second UE in determining the optimal beam based on the beam management information.

[0266] Optionally, in one embodiment of this disclosure, the transceiver module is further configured to:

[0267] The beam management information is received periodically, and there is at least one opportunity to transmit beam management information within one cycle.

[0268] Optionally, in one embodiment of this disclosure, the transceiver module is further configured to:

[0269] Receive the beam management information that is transmitted non-periodically during at least one beam management information transmission opportunity.

[0270] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0271] Receive first resource indication information sent during the first beam management information transmission opportunity, the first resource indication information indicating the time and frequency resource location of the future beam management information transmission opportunity.

[0272] Optionally, in one embodiment of this disclosure, the future beam management information transmission opportunity includes at least one of the following:

[0273] The first beam management information transmission opportunity after the first beam management information transmission opportunity;

[0274] The second beam management information transmission opportunity following the first beam management information transmission opportunity.

[0275] Optionally, in one embodiment of this disclosure, in response to the periodic transmission of the beam management information, the apparatus is further configured to:

[0276] The system receives second resource indication information sent during the first beam management information transmission opportunity. The second resource indication information is used to indicate the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle.

[0277] Optionally, in one embodiment of this disclosure, the transmit beam used by the first beam management information transmitter is the same as the transmit beam used by the beam management information transmitter in the next transmission cycle.

[0278] Optionally, in one embodiment of this disclosure, the at least one beam management information transmitter corresponds to an independent transmission beam.

[0279] Optionally, in one embodiment of this disclosure, the beam management information includes at least one of the following:

[0280] Transmit beam identifier, the transmit beam identifier being used to indicate the transmit beam used by the first UE to transmit the beam management information via PSCCH or PSSCH during a beam management information transmission opportunity;

[0281] A first UE identifier, which is used to indicate the first UE;

[0282] The second UE identifier is used to indicate the second UE;

[0283] The third resource indication information corresponding to the transmitting beam of the beam management information is used to indicate the receiving time and frequency resources used by the first UE when receiving the information sent by the second UE using the receiving beam corresponding to the transmitting beam of the beam management information.

[0284] Reference signal indication information, which is used to indicate the transmission parameters of the reference signal associated with the beam management information;

[0285] The number indication information is used to indicate the total number of transmission opportunities, or the number of transmission opportunities in a period.

[0286] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0287] The reference signal associated with the beam management information is received during the first beam management information transmission opportunity.

[0288] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0289] Determine the correspondence between the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity and the transmission beam used by the beam management information transmission opportunity;

[0290] Based on the aforementioned correspondence, the transmit beam implicitly indicated by the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity is determined.

[0291] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0292] In response to the need to send a signal to the first UE, the location of the time-frequency resource corresponding to the signal to be sent is determined;

[0293] The target third resource indication information is determined, wherein the target third resource indication information is: the indicated receiving time-frequency resource includes the third resource indication information of the time-frequency resource corresponding to the signal to be transmitted;

[0294] The target transmission beam of the second UE is determined based on the transmission beam corresponding to the target third resource indication information.

[0295] The signal to be transmitted is transmitted using the target transmission beam of the second UE.

[0296] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0297] Measure the reference signal transmitted by each beam management information transmission opportunity;

[0298] Based on the measurement results, the optimal transmission beam for the first UE is selected from the transmission beams corresponding to each beam management information transmission opportunity.

[0299] The optimal receive beam of the second UE and / or the optimal transmit beam of the second UE to transmit signals to the first UE are determined based on the optimal transmit beam of the first UE.

[0300] Optionally, in one embodiment of this disclosure, the apparatus is further configured to:

[0301] The third resource indication information corresponding to the optimal transmission beam of the first UE corresponding to the optimal transmission beam of the second UE is determined;

[0302] On the time-frequency resources indicated by the third resource indication information corresponding to the optimal transmission beam of the first UE, a signal is transmitted to the first UE using the optimal transmission beam of the second UE.

[0303] Please see Figure 14 , Figure 14This is a schematic diagram of the structure of a communication device 1400 provided in an embodiment of this application. The communication device 1400 can be a network device, a terminal device, a chip, chip system, or processor that supports the implementation of the above methods in a network device, or a chip, chip system, or processor that supports the implementation of the above methods in a terminal device. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0304] The communication device 1400 may include one or more processors 1401. The processor 1401 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0305] Optionally, the communication device 1400 may further include one or more memories 1402, on which a computer program 1404 may be stored. The processor 1401 executes the computer program 1404 to cause the communication device 1400 to perform the method described in the above method embodiments. Optionally, the memory 1402 may also store data. The communication device 1400 and the memory 1402 may be provided separately or integrated together.

[0306] Optionally, the communication device 1400 may also include a transceiver 1405 and an antenna 1406. The transceiver 1405 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 1405 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0307] Optionally, the communication device 1400 may further include one or more interface circuits 1406. The interface circuits 1406 are used to receive code instructions and transmit them to the processor 1401. The processor 1401 executes the code instructions to cause the communication device 1400 to perform the methods described in the above method embodiments.

[0308] In one implementation, the processor 1401 may include a transceiver for implementing receive and transmit functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0309] In one implementation, processor 1401 may store computer program 1403, which runs on processor 1401 and causes communication device 1400 to perform the methods described in the above method embodiments. Computer program 1403 may be embedded in processor 1401, in which case processor 1401 may be implemented in hardware.

[0310] In one implementation, the communication device 1400 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this application can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0311] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may vary. Figure 14 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0312] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0313] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0314] (3) ASIC, such as modem;

[0315] (4) Modules that can be embedded in other devices;

[0316] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0317] (6) Others, etc.

[0318] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 15 The diagram shows the structure of the chip. Figure 15 The chip shown includes a processor 1501 and an interface 1502. Optionally, there may be one or more processors 1501 and multiple interfaces 1502.

[0319] Optionally, the chip also includes a memory 1503, which is used to store necessary computer programs and data.

[0320] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented through hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this application.

[0321] This application also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0322] This application also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0323] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0324] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., involved in this application are merely for the convenience of description and are not intended to limit the scope of the embodiments of this application, nor do they indicate the order of sequence.

[0325] At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not impose any limitation. In the embodiments of this application, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order or size among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0326] The correspondences shown in the tables of this application can be configured or predefined. The signal values ​​in each table are merely examples and can be configured to other values; this application is not limiting. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows of the tables in this application may not be configured. Furthermore, appropriate modifications and adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the headings of the above tables can also use other names that the communication device can understand, and the values ​​or representations of the parameters can also be other values ​​or representations that the communication device can understand. In the implementation of the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables, etc.

[0327] The term "predefined" in this application can be understood as definition, pre-defined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0328] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0329] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0330] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An information transmission method, characterized in that, The method is executed by a first user equipment (UE), including: Beam management information is transmitted via the Physical Direct Control Channel (PSCCH) or the Physical Direct Shared Channel (PSSCH), and the beam management information is used to implement beam management between the first UE and the second UE that receives the beam management information. The method further includes: In the first beam management information transmission opportunity, first resource indication information is transmitted, the first resource indication information indicating the time-frequency resource location of at least one future beam management information transmission opportunity; The method further includes: A transmission identifier, which indicates whether the beam management information is carried in the PSCCH or PSSCH transmission; The method further includes: The beam management information is carried in the PSCCH or PSSCH transmission and is sent using a specific format of signaling.

2. The method as described in claim 1, characterized in that, The transmitted beam management information includes: The beam management information is sent periodically, and there is at least one opportunity to transmit beam management information within one cycle.

3. The method as described in claim 1, characterized in that, The transmitted beam management information includes: The beam management information is transmitted non-periodically at at least one opportunity to transmit beam management information.

4. The method as described in claim 2 or 3, characterized in that, The method further includes: The location of the time-frequency resource corresponding to the at least one beam management information transmission opportunity is determined, wherein the time-frequency resources corresponding to the at least one beam management information transmission opportunity are of the same size.

5. The method as described in claim 4, characterized in that, Determining the time-frequency resource location corresponding to the at least one beam management information transmission opportunity includes at least one of the following: The location of time-frequency resources corresponding to each beam management information transmission opportunity is determined based on the downlink control information (DCI) of the base station. Based on the radio resource control (RRC) signaling configuration of the base station, the time and frequency resource locations corresponding to each beam management information transmission opportunity are determined; The first UE autonomously determines the time and frequency resource locations corresponding to each beam management information transmission opportunity.

6. The method as described in claim 1, characterized in that, The at least one future beam management information transmission opportunity includes at least one of the following: The first beam management information transmission opportunity after the first beam management information transmission opportunity; The second beam management information transmission opportunity following the first beam management information transmission opportunity.

7. The method as described in claim 1, characterized in that, The method further includes: In the first beam management information transmission opportunity, a second resource indication information is sent. The second resource indication information is used to indicate the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle.

8. The method as described in claim 7, characterized in that, The transmit beam used by the first beam management information transmitter is the same as the transmit beam used by the beam management information transmitter in the next transmission cycle.

9. The method as described in claim 2 or 3, characterized in that, The at least one beam management information transmission opportunity corresponds to an independent transmission beam.

10. The method according to any one of claims 1-3, characterized in that, The beam management information includes at least one of the following: Transmit beam identifier, the transmit beam identifier being used to indicate the transmit beam used by the first UE to transmit the beam management information via PSCCH or PSSCH during a beam management information transmission opportunity; First UE identifier, the first UE identifier is used to indicate the first UE; The second UE identifier is used to indicate the second UE; The third resource indication information corresponding to the transmitting beam of the beam management information is used to indicate the receiving time and frequency resources used by the first UE when receiving information sent by the second UE using the receiving beam corresponding to the transmitting beam of the beam management information; wherein, the third resource indication information is also used by the second UE to determine the transmitting beam used when sending a signal to the first UE, and / or, the third resource indication information is also used by the second UE to determine the time and frequency resources used when sending a signal to the first UE using the optimal transmitting beam; Reference signal indication information, which is used to indicate the transmission parameters of the reference signal associated with the beam management information; The number indication information is used to indicate the total number of transmission opportunities, or the number of transmission opportunities within a period.

11. The method as described in claim 10, characterized in that, The method further includes: The reference signal associated with the beam management information is transmitted during the first beam management information transmission opportunity.

12. The method as described in claim 10, characterized in that, There is a corresponding relationship between the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity and the transmission beam used by the beam management information transmission opportunity. The PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity implicitly indicate the transmission beam corresponding to the beam management information transmission opportunity.

13. The method as described in claim 12, characterized in that, The PSCCH or PSSCH transmission parameters include at least one of the following: PSCCH or PSSCH transmits the location of the corresponding time-frequency resource; Location of time-frequency resources for reference signals in PSCCH or PSSCH transmission; A sequence of reference signals in PSCCH or PSSCH transmission.

14. The method according to any one of claims 1-3, characterized in that, The beam management information is carried in at least one of the following: Phase 1 side link control information (SCI); Second-stage SCI; Media Access Control Layer Control Unit (MAC CE) signaling.

15. The method as described in claim 1, characterized in that, The identifier is carried in at least one of the following: First-stage SCI; Second-stage SCI.

16. An information transmission method, characterized in that, The method is executed by the second UE, including: Receive beam management information transmitted via PSCCH or PSSCH, wherein the beam management information is used to implement beam management between the second UE and the first UE that transmitted the beam management information; The method further includes: Receive first resource indication information sent during the first beam management information transmission opportunity, wherein the first resource indication information indicates the time-frequency resource location of at least one future beam management information transmission opportunity; The method further includes: A receiving identifier, which is used to indicate whether the beam management information is carried in the PSCCH or PSSCH transmission; The method further includes: Upon receiving the beam management information transmitted via signaling in a specific format, it is determined that the beam management information is carried in the PSCCH or PSSCH transmission.

17. The method as described in claim 16, characterized in that, Receive beam management information, including: The beam management information is received periodically, and there is at least one opportunity to transmit beam management information within one cycle.

18. The method as described in claim 16, characterized in that, Receive beam management information, including: Receive the beam management information that is transmitted non-periodically during at least one beam management information transmission opportunity.

19. The method as described in claim 16, characterized in that, The future beam management information transmission opportunities include at least one of the following: The first beam management information transmission opportunity after the first beam management information transmission opportunity; The second beam management information transmission opportunity following the first beam management information transmission opportunity.

20. The method as described in claim 16, characterized in that, The method further includes: The system receives second resource indication information sent during the first beam management information transmission opportunity. The second resource indication information is used to indicate the time-frequency resource location of the beam management information transmission opportunity corresponding to the first beam management information transmission opportunity in the next transmission cycle.

21. The method as described in claim 20, characterized in that, The transmit beam used by the first beam management information transmitter is the same as the transmit beam used by the beam management information transmitter in the next transmission cycle.

22. The method as described in claim 17 or 18, characterized in that, The at least one beam management information transmission opportunity corresponds to an independent transmission beam.

23. The method as described in any one of claims 16-18, characterized in that, The beam management information includes at least one of the following: Transmit beam identifier, the transmit beam identifier being used to indicate the transmit beam used by the first UE to transmit the beam management information via PSCCH or PSSCH during a beam management information transmission opportunity; First UE identifier, the first UE identifier is used to indicate the first UE; The second UE identifier is used to indicate the second UE; The third resource indication information corresponding to the transmitting beam of the beam management information is used to indicate the receiving time and frequency resources used by the first UE when receiving information sent by the second UE using the receiving beam corresponding to the transmitting beam of the beam management information; wherein, the third resource indication information is also used by the second UE to determine the transmitting beam used when sending a signal to the first UE, and / or, the third resource indication information is also used by the second UE to determine the time and frequency resources used when sending a signal to the first UE using the optimal transmitting beam; Reference signal indication information, which is used to indicate the transmission parameters of the reference signal associated with the beam management information; The number indication information is used to indicate the total number of transmission opportunities, or the number of transmission opportunities within a period.

24. The method as described in claim 23, characterized in that, The method further includes: The reference signal associated with the beam management information is received during the first beam management information transmission opportunity.

25. The method as described in claim 23, characterized in that, The method further includes: Determine the correspondence between the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity and the transmission beam used by the beam management information transmission opportunity; Based on the aforementioned correspondence, the transmit beam implicitly indicated by the PSCCH or PSSCH transmission parameters under the beam management information transmission opportunity is determined.

26. The method as described in claim 23, characterized in that, The method further includes: In response to the need to send a signal to the first UE, the location of the time-frequency resource corresponding to the signal to be sent is determined; The target third resource indication information is determined, wherein the target third resource indication information is: the indicated receiving time-frequency resource includes the third resource indication information of the time-frequency resource corresponding to the signal to be transmitted; The target transmission beam of the second UE is determined based on the transmission beam corresponding to the target third resource indication information. The signal to be transmitted is transmitted using the target transmission beam of the second UE.

27. The method as described in claim 23, characterized in that, The method further includes: Measure the reference signal transmitted by each beam management information transmission opportunity; Based on the measurement results, the optimal transmission beam for the first UE is selected from the transmission beams corresponding to each beam management information transmission opportunity. The optimal receive beam of the second UE and / or the optimal transmit beam of the second UE to transmit signals to the first UE are determined based on the optimal transmit beam of the first UE.

28. The method as described in claim 27, characterized in that, The method further includes: The third resource indication information corresponding to the optimal transmission beam of the first UE corresponding to the optimal transmission beam of the second UE is determined; On the time-frequency resources indicated by the third resource indication information corresponding to the optimal transmission beam of the first UE, a signal is transmitted to the first UE using the optimal transmission beam of the second UE.

29. A communication device, characterized in that, include: The transceiver module is used to transmit beam management information via the Physical Direct Control Channel (PSCCH) or the Physical Direct Shared Channel (PSSCH), wherein the beam management information is used to implement beam management between the first UE and the second UE that receives the beam management information. The device is also used for: In the first beam management information transmission opportunity, first resource indication information is transmitted, the first resource indication information indicating the time-frequency resource location of at least one future beam management information transmission opportunity; The device is also used for: A transmission identifier, which indicates whether the beam management information is carried in the PSCCH or PSSCH transmission; The device is also used for: The beam management information is carried in the PSCCH or PSSCH transmission and is sent using a specific format of signaling.

30. A communication device, characterized in that, include: The transceiver module is used to receive beam management information transmitted via PSCCH or PSSCH, wherein the beam management information is used to implement beam management between the second UE and the first UE that transmitted the beam management information; The device is also used for: Receive first resource indication information sent during the first beam management information transmission opportunity, wherein the first resource indication information indicates the time-frequency resource location of at least one future beam management information transmission opportunity; The device is also used for: A receiving identifier, which is used to indicate whether the beam management information is carried in the PSCCH or PSSCH transmission; The device is also used for: Upon receiving the beam management information transmitted via signaling in a specific format, it is determined that the beam management information is carried in the PSCCH or PSSCH transmission.

31. A communication device, characterized in that, The device includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 1 to 15, or the processor executes the computer program stored in the memory to cause the device to perform the method as claimed in any one of claims 16 to 28.

32. A communication device, characterized in that, include: Processor and interface circuitry, among which The interface circuit is used to acquire code instructions and transmit them to the processor; The processor is configured to execute the code instructions to perform the method as described in any one of claims 1 to 15, or to execute the code instructions to perform the method as described in any one of claims 16 to 28.

33. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1 to 15 to be implemented, or, when executed, cause the method of any one of claims 16 to 28 to be implemented.

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