Wireless communication resource indication method, device and system

Abstract

The present application proposes a method, apparatus and system for wireless communication resource indication. A method for wireless communication resource indication includes: determining sidelink potential time-domain resource configuration information, where the sidelink potential time-domain resource configuration information is used to indicate the time-domain resource range available for sidelink resource mapping; and transmitting the sidelink potential time-domain resource configuration information through PSBCH.

Description

Technical Field

[0001] This application relates to a wireless communication network, for example, to a method, apparatus, and system for indicating wireless communication resources. Background Art

[0002] In the 5th Generation (5G) New Radio (NR), a Device-to-Device (D2D) communication mode is provided, that is, terminals can directly establish a communication connection for communication without passing through a base station or other access nodes. D2D communication includes, for example, various forms such as Vehicle-to-Everything (V2X).

[0003] In D2D communication, a User Equipment (UE) within the network coverage determines the frame structure and resource pool for sidelink communication according to the configuration of the base station, and a UE outside the network coverage determines the frame structure and resource pool according to pre-configuration. For a semi-covered scenario, that is, the edge area of the network coverage, in order to enable communication between a UE within the coverage and a UE outside the coverage, and also to avoid interference caused by signals sent by the UE outside the coverage on the receiving side of the base station, the UE outside the coverage needs to know the frame structure information (UL / DL Time Division Duplex (TDD) configuration information) and resource pool information configured within the coverage.

[0004] In the already published relevant standards, it has been clearly determined not to support a UE from forwarding resource pool configuration information or resource configuration information. Meanwhile, in NR, the UL / DL TDD configuration parameters include cell-specific parameters and UE-specific parameters. If the UL / DL TDD configuration parameters are indicated in the Physical Sidelink Broadcast Channel (PSBCH), the required overhead is too large to be implemented. Summary of the Invention

[0005] This application provides a method, apparatus, and system for indicating wireless communication resources, avoiding interference of sidelink communication on cellular communication.

[0006] An embodiment of this application provides a method for indicating wireless communication resources, including:

[0007] Determine sidelink potential time-domain resource configuration information, where the sidelink potential time-domain resource configuration information is used to indicate the time-domain resource range available for sidelink resource mapping;

[0008] Send sidelink potential time-domain resource configuration information through PSBCH...

[0009] An embodiment of the present application provides a method for indicating wireless communication resources, including:

[0010] Receive sidelink potential time-domain resource configuration information through PSBCH;

[0011] Determine the time-domain resource range available for sidelink resource mapping according to the sidelink potential time-domain resource configuration information.

[0012] An embodiment of the present application provides a device for indicating wireless communication resources, including:

[0013] A determination module, configured to determine sidelink potential time-domain resource configuration information, where the sidelink potential time-domain resource configuration information is used to indicate the time-domain resource range available for sidelink resource mapping;

[0014] A sending module, configured to send sidelink potential time-domain resource configuration information through PSBCH.

[0015] An embodiment of the present application provides a device for indicating wireless communication resources, including:

[0016] A receiving module, configured to receive sidelink potential time-domain resource configuration information through PSBCH;

[0017] A determination module, configured to determine the time-domain resource range available for sidelink resource mapping according to the sidelink potential time-domain resource configuration information.

[0018] An embodiment of the present application provides a wireless communication resource indication system, including: a first user equipment UE and a second UE;

[0019] The first UE includes the wireless communication resource indication device as shown in Figure 5 the embodiment;

[0020] The second UE includes the wireless communication resource indication device as shown in Figure 6 the embodiment. Description of the Drawings

[0021] Figure 1 A flowchart of a method for indicating wireless communication resources provided for an embodiment;

[0022] Figure 2 A flowchart of another method for indicating wireless communication resources provided for an embodiment;

[0023] Figure 3 Schematic diagram of slot resource configuration for a wireless communication resource indication method provided for an embodiment;

[0024] Figure 4 Schematic diagram of slot resource configuration for another wireless communication resource indication method provided for an embodiment;

[0025] Figure 5 Schematic diagram of the structure of a wireless communication resource indication device provided for an embodiment;

[0026] Figure 6 Schematic diagram of the structure of another wireless communication resource indication device provided for an embodiment;

[0027] Figure 7 Schematic diagram of the structure of a UE provided for an embodiment. Detailed implementation manners

[0028] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0029] Figure 1 Flowchart of a wireless communication resource indication method provided for an embodiment. As Figure 1 shown, the method provided in this embodiment includes the following steps.

[0030] Step S1010, determine sidelink potential time-domain resource configuration information, where the sidelink potential time-domain resource configuration information is used to indicate the time-domain resource range available for sidelink resource mapping.

[0031] The wireless communication resource indication method provided in this embodiment is applied to the first UE performing D2D communication. The first UE is within the coverage range of the access node, and the first UE performs D2D communication with the second UE outside the coverage range of the access node. In the following embodiments of the present application, the wireless communication resource indication method in the D2D communication performed by the first UE and the second UE is described by taking the NR V2X communication between the first UE and the second UE as an example. The first UE and the second UE communicate through sidelink. Before communication, the first UE and the second UE need to determine the transmission resources used for communication, that is, the scheduling of transmission resources needs to be performed. Since the first UE is within the coverage range of the access node, the first UE can receive various configuration information sent by the access node, so the first UE will be able to know the resources allocated by the network for sidelink. Since the second UE is outside the coverage range of the access node, the second node cannot receive the configuration information sent by the access node, so the first node needs to send the configuration information of the communication resources used for sidelink communication to the second UE.

[0032] However, it has been clearly determined in the relevant standards that the UE forwarding resource pool configuration information or resource configuration information in V2X communication is not supported, and the resource configuration information related to resource configuration, the uplink / downlink time division duplex configuration information UL / DL TDDconfiguartion information (i.e., time division duplex - uplink - downlink - configuration information (TDD - UL - DL - Config)) includes cellspecific (i.e., time division duplex - uplink - downlink - common configuration (TDD - UL - DL - ConfigCommon)) and uespecific (i.e., time division duplex - uplink - downlink - dedicated configuration (TDD - UL - DL - ConfigDedicated)). If the overhead required for the first UE to indicate the uplink / downlink time division duplex configuration information in the PSBCH is too large and difficult to implement, and if the first UE does not indicate the resource configuration information to the second UE, then the transmission resources used by the second UE for sidelink communication may interfere with cellular communication.

[0033] In this embodiment, to solve the above problems, instead of indicating the complete uplink / downlink time division duplex configuration information in the PSBCH, only the sidelink potential time domain resource configuration information is sent. The sidelink potential time domain resource configuration information is the relevant information about the range of time domain resources that may be used for sidelink communication. That is, the first UE does not send the complete sidelink resource configuration information to the second UE through the PSBCH, but only sends the relevant information that can indicate the range of time domain resources used for sidelink communication, so as to achieve the purpose of reducing the overhead of the transmission resource configuration information and making it possible to send the transmission resource configuration information through the PSBCH.

[0034] First, it is necessary to determine the sidelink potential time domain resource configuration information. The sidelink potential time domain resource configuration information is used to indicate the range of time domain resources available for sidelink resource mapping. The sidelink potential time domain resource configuration information is equivalent to the cell specific parameter in the UL / DL TDD configuartion information, but the sidelink potential time domain resource configuration information does not include the complete cell specific parameter. As long as the information included in the sidelink potential time domain resource configuration information can indicate the range of time domain resources available for sidelink resource mapping, it can be a combination of one or more parameters.

[0035] In one embodiment, the sidelink potential time-domain resource configuration information may include: the time-domain configuration period of the sidelink potential time-domain resource, the starting position of the sidelink potential time-domain resource, and / or the offset value of the starting position. The time-domain configuration period of the sidelink potential time-domain resource refers to the time-domain resource range available for sidelink communication, which can be in the granularity of time slots (slot), or in the granularity of any time length, such as milliseconds (ms). The time-domain configuration period of the sidelink potential time-domain resource is a set of numerous time-domain resources, including resources available for sidelink transmission and resources not available for sidelink transmission. The resource configuration and arrangement within each time-domain configuration period of the sidelink potential time-domain resource are the same. The starting position of the sidelink potential time-domain resource refers to the starting position of the resources available for sidelink transmission within the time-domain configuration period of the sidelink potential time-domain resource, which can be in the granularity of time slots or in the granularity of time. The resources available for sidelink transmission start from the starting position until the end of the period within the time-domain configuration period of the sidelink potential time-domain resource. Alternatively, instead of indicating the starting position of the sidelink potential time-domain resource, the offset value of the starting position of the sidelink potential time-domain resource can be indicated, that is, the offset value from the starting position of each time-domain configuration period of the sidelink potential time-domain resource to the starting position of the sidelink potential time-domain resource, which can also be in the granularity of time slots or in the granularity of time. The resources available for sidelink transmission start from the start of the period plus the offset value until the end of the period within the time-domain configuration period of the sidelink potential time-domain resource.

[0036] In one embodiment, the sidelink potential time-domain resource configuration information includes: the potential valid time-domain resource range of the sidelink. The potential valid time-domain resource range of the sidelink represents the range of the potential valid time-domain resources of the sidelink within the time-domain configuration period of the sidelink potential time-domain resources. The time-domain configuration period of the sidelink potential time-domain resources includes being within the potential valid time-domain resource range of the sidelink, and can also be indicated in other ways, or is pre-configured. The potential valid time-domain resource range of the sidelink can be indicated in various ways. For example, the potential valid time-domain resource range of the sidelink includes the time-domain configuration period of the sidelink potential time-domain resources, the starting position of the valid time-domain resources within the time-domain configuration period of the sidelink potential time-domain resources, and the valid time-domain length of the sidelink potential time-domain resources. The starting position and the valid time-domain length can be in terms of time slots or in terms of time. The starting position and the valid time-domain length can also be indicated after quantifying the time slots or time, such as indicating with a granularity of 5 time slots or 5 ms.

[0037] In one embodiment, the sidelink potential time-domain resource configuration information includes: the potential valid time-domain resource range of the sidelink, and the potential valid time-domain resource range of the sidelink includes the number of potential valid time slots of the sidelink potential time-domain resources, or the valid time range of the sidelink potential time-domain resources in terms of time. The potential valid time-domain resource range of the sidelink represents the range of the potential valid time-domain resources of the sidelink within the time-domain configuration period of the sidelink potential time-domain resources. The time-domain configuration period of the sidelink potential time-domain resources includes being within the potential valid time-domain resource range of the sidelink, and can also be indicated in other ways, or is pre-configured. That is, the potential valid time-domain resource range of the sidelink can be indicated only by the number of valid time slots or the valid time range, and the starting position of the valid time-domain resources within the time-domain configuration period of the sidelink potential time-domain resources can start from the start point of the time-domain configuration period of the sidelink potential time-domain resources or be determined according to the pre-configured information.

[0038] In one embodiment, the sidelink potential time-domain resource configuration information includes: the index value of the sidelink potential time-domain resource configuration information in a preset sidelink potential time-domain resource configuration table, and the sidelink potential time-domain resource configuration information includes time division duplex uplink-downlink slot configuration information. The sidelink potential time-domain resource configuration table can be preset in the first UE and the second UE. The sidelink potential time-domain resource configuration table includes one or more groups of sidelink potential time-domain resource configuration information. Each group of sidelink potential time-domain resource configuration information includes time division duplex uplink-downlink slot configuration information, or may further include information such as the time-domain configuration period of the sidelink potential time-domain resource. Each group of information included in the sidelink potential time-domain resource configuration table is equivalent to the complete UL / DL TDD configuration information. However, since the sidelink potential time-domain resource configuration information is only the index value of the sidelink potential time-domain resource configuration information in the preset sidelink potential time-domain resource configuration table, only a limited overhead is required to transmit the index value, without consuming too much overhead.

[0039] In the above embodiments, the sidelink potential time-domain resource configuration information further includes: subcarrier spacing or numerology information. The numerology information includes subcarrier spacing, symbol length, cyclic prefix (CP) length, etc. The subcarrier spacing or numerology information is used to indicate the subcarrier of the configuration information of the sidelink potential time-domain resource. The subcarrier spacing or numerology information can be included in the configuration information of the sidelink potential time-domain resource, or can be indicated separately, or determined according to a predefined rule. In traditional wireless communication systems, the subcarrier spacing is fixed, but in 5G NR, a technology of variable subcarrier spacing is proposed. Therefore, in the case of variable subcarrier spacing, the sidelink potential time-domain resource configuration information can further include subcarrier spacing or numerology information to indicate the subcarrier spacing.

[0040] In one embodiment, the subcarrier spacing or numerology information is determined according to the network-side configuration information; and / or, the subcarrier spacing or numerology information is included in the sidelink potential time-domain resource configuration information; and / or, the subcarrier spacing or numerology information has an explicit or implicit mapping relationship with the index value corresponding to the sidelink potential time-domain resource configuration information.

[0041] Step S1020, transmit the sidelink potential time-domain resource configuration information through the PSBCH.

[0042] After determining the sidelink potential time-domain resource configuration information, the first UE can send the sidelink potential time-domain resource configuration information to the second UE via PSBCH. Then, when the second UE receives the sidelink potential time-domain resource configuration information, it can determine the time-domain resource range available for sidelink resource mapping, that is, determine the range of transmission resources used for sidelink transmission. Then, the second UE can select any resource within the determined resource range to communicate with the first UE via sidelink. Of course, the time-domain resource range available for sidelink resource mapping only represents a time-domain transmission resource range, equivalent to a resource pool. As for which specific transmission resources the second UE selects in the resource pool for uplink or downlink transmission, it can be obtained by mapping within the time-domain resource range available for sidelink resource mapping according to the pre-configured information in the second UE. The first UE also has the same pre-configured information as the second UE, so that the first UE can map within the time-domain resource range available for sidelink resource mapping to obtain the same transmission resources as determined by the second UE.

[0043] The wireless communication resource indication method provided in this embodiment sends the sidelink potential time-domain resource configuration information via PSBCH after determining the sidelink potential time-domain resource configuration information. The sidelink potential time-domain resource configuration information is used to indicate the time-domain resource range available for sidelink resource mapping, enabling the UE within the coverage range in D2D communication to indicate the resources used for sidelink communication to the UE outside the coverage range, avoiding interference of sidelink communication to cellular communication.

[0044] Figure 1In the illustrated embodiment, the sidelink potential time-domain resource configuration information is determined and the sidelink potential time-domain resource configuration information is sent via PSBCH. Then, the first UE and the second UE can determine the time-domain resource range available for sidelink resource mapping. In order to further determine the sidelink available time-domain resources within the time-domain resource range available for sidelink resource mapping, the mapping method of the sidelink time-domain resources in the sidelink potential time-domain resources can also be pre-configured in the first UE and the second UE. The sidelink available time-domain resources are determined within the time-domain resource range available for sidelink resource mapping indicated by the sidelink potential time-domain resource configuration information according to the mapping method of the sidelink time-domain resources in the sidelink potential time-domain resources. That is, according to the pre-configured mapping method, the sidelink available time-domain resources are determined within the time-domain resource range available for sidelink resource mapping indicated by the sidelink potential time-domain resource configuration information, so as to accurately determine the sidelink available time-domain resources, including uplink resources and downlink resources.

[0045] In one embodiment, the mapping method of the sidelink time-domain resources in the sidelink potential time-domain resources is mapped within the time-domain resource range available for sidelink resource mapping in the form of a bitmap. There are two methods for mapping the bitmap to the sidelink potential time-domain resources:

[0046] Method 1: The bitmap is mapped starting from the starting position of the sidelink potential time-domain resource configuration period. If the pre-configured bitmap period is less than the sidelink potential time-domain resource configuration period, the bitmap is repeatedly mapped until the mapping of the sidelink potential time-domain resource configuration period is completed. If the sidelink potential time-domain resource configuration period and the bitmap period are not in an integer multiple relationship, then the partial bit string of the bitmap that exceeds the sidelink potential time-domain resource configuration period is truncated, or the bitmap mapping for the sidelink potential time-domain resource configuration range that is less than one bitmap period is abandoned. Alternatively, when pre-configuring the bitmap, the bitmap period can be made divisible by 20 ms.

[0047] If the bitmap period is greater than the sidelink potential time-domain resource configuration period, the partial bit string of the bitmap that exceeds the sidelink potential time-domain resource configuration period is truncated.

[0048] For resources outside the sidelink potential time-domain resources, the Bitmap is invalid. Even if it is 1, it is not used as the time-domain resource range available for sidelink resource mapping.

[0049] Method 2:

[0050] The Bitmap is mapped on the sidelink potential time-domain resources. Mapping starts from the start position of the sidelink potential time-domain resource configuration period or based on the offset; mapping starts from the sidelink potential symbols or sidelink potential time slots in the sidelink potential time-domain resource configuration included in the sidelink potential time-domain resource configuration information.

[0051] Among them, Method 1 and Method 2 can also be used in combination.

[0052] Figure 2 A flowchart of another wireless communication resource indication method provided for an embodiment is as Figure 2 shown. The method provided in this embodiment includes the following steps.

[0053] Step S2010, receiving sidelink potential time-domain resource configuration information through PSBCH.

[0054] The wireless communication resource indication method provided in this embodiment is applied to the second UE performing D2D communication. The second UE is located outside the coverage area of the access node. The second UE performs D2D communication with the first UE located within the coverage area of the access node. The first UE and the second UE communicate through sidelink. Before communication, the first UE and the second UE need to determine the transmission resources used for communication, that is, transmission resource scheduling is required. Since the first UE is located within the coverage area of the access node, the first UE can receive various configuration information sent by the access node. Then the first UE will be able to know the resources allocated by the network for sidelink. Since the second UE is located outside the coverage area of the access node, the second node cannot receive the configuration information sent by the access node. Then the second node needs to receive the configuration information of the communication resources used for sidelink communication sent by the first UE.

[0055] However, it has been clearly determined in the relevant standards that the UE forwarding resource pool configuration information or resource configuration information in V2X communication is not supported. The resource configuration information related to resource configuration, the uplink / downlink time division duplex configuration information UL / DL TDDconfiguartion information (i.e., time division duplex - uplink - downlink - configuration information (TDD - UL - DL - Config)) includes cellspecific (i.e., time division duplex - uplink - downlink - common configuration (TDD - UL - DL - ConfigCommon)) and uespecific (i.e., time division duplex - uplink - downlink - dedicated configuration (TDD - UL - DL - ConfigDedicated)). If the overhead required for the first UE to indicate the uplink / downlink time division duplex configuration information in the PSBCH is too large and difficult to implement, and if the first UE does not indicate the resource configuration information to the second UE, then the transmission resources used by the second UE for sidelink communication may interfere with cellular communication.

[0056] In this embodiment, to solve the above problems, instead of indicating the complete uplink / downlink time division duplex configuration information in the PSBCH, only the sidelink potential time domain resource configuration information is sent. The sidelink potential time domain resource configuration information is the relevant information about the range of time domain resources that may be used for sidelink communication. That is, the first UE does not send the complete sidelink resource configuration information to the second UE through the PSBCH, but only sends the relevant information that can indicate the range of time domain resources used for sidelink communication, so as to achieve the purpose of reducing the overhead of transmission resource configuration information and making it possible to send the transmission resource configuration information through the PSBCH.

[0057] The second UE receives the sidelink potential time domain resource configuration information sent by the first UE through the PSBCH. The sidelink potential time domain resource configuration information is used to indicate the range of time domain resources available for sidelink resource mapping. The sidelink potential time domain resource configuration information is equivalent to the cell specific parameter in the UL / DL TDD configuartion information, but the sidelink potential time domain resource configuration information does not include the complete cell specific parameter. As long as the information included in the sidelink potential time domain resource configuration information can indicate the range of time domain resources available for sidelink resource mapping, it can be a combination of one or more parameters.

[0058] In one embodiment, the sidelink potential time-domain resource configuration information may include: the time-domain configuration period of the sidelink potential time-domain resources, the starting position of the sidelink potential time-domain resources, and / or the offset value of the starting position. The time-domain configuration period of the sidelink potential time-domain resources refers to the time-domain resource range available for sidelink communication, which can be in terms of time slots or any time length, such as milliseconds (ms). The time-domain configuration period of the sidelink potential time-domain resources is a set of numerous time-domain resources, including resources available for sidelink transmission and resources not available for sidelink transmission. The resource configuration and arrangement within each time-domain configuration period of the sidelink potential time-domain resources are the same. The starting position of the sidelink potential time-domain resources refers to the starting position of the resources available for sidelink transmission within the time-domain configuration period of the sidelink potential time-domain resources, which can be in terms of time slots or time. The resources available for sidelink transmission start from the starting position until the end of the period within the time-domain configuration period of the sidelink potential time-domain resources. Alternatively, instead of indicating the starting position of the sidelink potential time-domain resources, the offset value of the starting position of the sidelink potential time-domain resources can be indicated, that is, the offset value from the starting position of each time-domain configuration period of the sidelink potential time-domain resources to the starting position of the sidelink potential time-domain resources, which can also be in terms of time slots or time. The resources available for sidelink transmission start from the start of the period plus the offset value until the end of the period within the time-domain configuration period of the sidelink potential time-domain resources.

[0059] In one embodiment, the sidelink potential time-domain resource configuration information includes: the potential valid time-domain resource range of the sidelink. The potential valid time-domain resource range of the sidelink represents the range of the potential valid time-domain resources of the sidelink within the time-domain configuration period of the sidelink potential time-domain resources. The time-domain configuration period of the sidelink potential time-domain resources includes being included within the potential valid time-domain resource range of the sidelink, and can also be indicated otherwise, or is pre-configured. The potential valid time-domain resource range of the sidelink can be indicated in various ways. For example, the potential valid time-domain resource range of the sidelink includes the time-domain configuration period of the sidelink potential time-domain resources, the starting position of the valid time-domain resources within the time-domain configuration period of the sidelink potential time-domain resources, and the valid time-domain length of the sidelink potential time-domain resources. The starting position and the valid time-domain length can be in terms of time slots or in terms of time. The starting position and the valid time-domain length can also be indicated after quantifying the time slots or time, such as indicating with a granularity of 5 time slots or 5 ms.

[0060] In one embodiment, the sidelink potential time-domain resource configuration information includes: the potential valid time-domain resource range of the sidelink. The potential valid time-domain resource range of the sidelink includes the number of potential valid time slots of the sidelink potential time-domain resources, or the valid time range of the sidelink potential time-domain resources in terms of time. The potential valid time-domain resource range of the sidelink represents the range of the potential valid time-domain resources of the sidelink within the time-domain configuration period of the sidelink potential time-domain resources. The time-domain configuration period of the sidelink potential time-domain resources includes being included within the potential valid time-domain resource range of the sidelink, and can also be indicated otherwise, or is pre-configured. That is, the potential valid time-domain resource range of the sidelink can be indicated only by the number of valid time slots or the valid time range, and the starting position of the valid time-domain resources within the time-domain configuration period of the sidelink potential time-domain resources can start from the start point of the time-domain configuration period of the sidelink potential time-domain resources or be determined according to the pre-configured information.

[0061] In one embodiment, the sidelink potential time-domain resource configuration information includes: the index value of the sidelink potential time-domain resource configuration information in a preset sidelink potential time-domain resource configuration table, and the sidelink potential time-domain resource configuration information includes time division duplex uplink-downlink slot configuration information. The sidelink potential time-domain resource configuration table can be preset in the first UE and the second UE. The sidelink potential time-domain resource configuration table includes one or more groups of sidelink potential time-domain resource configuration information. Each group of sidelink potential time-domain resource configuration information includes time division duplex uplink-downlink slot configuration information, or may also include information such as the time-domain configuration period of the sidelink potential time-domain resource. Each group of information included in the sidelink potential time-domain resource configuration table is equivalent to the complete UL / DL TDD configuration information. However, since the sidelink potential time-domain resource configuration information is only the index value of the sidelink potential time-domain resource configuration information in the preset sidelink potential time-domain resource configuration table, only a limited overhead is required to transmit the index value, without consuming too much overhead.

[0062] In the above embodiments, the sidelink potential time-domain resource configuration information further includes: subcarrier spacing or numerology information. The numerology information includes subcarrier spacing, symbol length, cyclic prefix (CP) length, etc. The subcarrier spacing or numerology information is used to indicate the subcarrier of the sidelink potential time-domain resource configuration information. The subcarrier spacing or numerology information can be included in the sidelink potential time-domain resource configuration information, or can be indicated separately, or determined according to a predefined rule. In traditional wireless communication systems, the subcarrier spacing is fixed, but in 5G NR, a technology of variable subcarrier spacing is proposed. Therefore, in the case of variable subcarrier spacing, the sidelink potential time-domain resource configuration information can further include subcarrier spacing or numerology information to indicate the subcarrier spacing.

[0063] In one embodiment, the subcarrier spacing or numerology information is determined according to the network-side configuration information; and / or, the subcarrier spacing or numerology information is included in the sidelink potential time-domain resource configuration information; and / or, the subcarrier spacing or numerology information has an explicit or implicit mapping relationship with the index value corresponding to the sidelink potential time-domain resource configuration information.

[0064] Step S2020, determine the time-domain resource range available for sidelink resource mapping according to the sidelink potential time-domain resource configuration information.

[0065] When the second UE receives the sidelink potential time-domain resource configuration information, it can determine the time-domain resource range available for sidelink resource mapping, that is, determine the range of transmission resources used for sidelink transmission. Then, the second UE can select any resource within the determined resource range to perform sidelink communication with the first UE. Of course, the time-domain resource range available for sidelink resource mapping only represents a time-domain transmission resource range, equivalent to a resource pool. And which specific transmission resources the second UE selects for uplink or downlink transmission in the resource pool can be obtained by mapping according to the pre-configured information in the second UE within the time-domain resource range available for sidelink resource mapping. The first UE also has the same pre-configured information as the second UE, so that the first UE can map and obtain the same transmission resources as those determined by the second UE within the time-domain resource range available for sidelink resource mapping.

[0066] The wireless communication resource indication method provided in this embodiment, after receiving the sidelink potential time-domain resource configuration information through the PSBCH, determines the time-domain resource range available for sidelink resource mapping according to the sidelink potential time-domain resource configuration information, enabling the UE outside the coverage area in D2D communication to receive the resources indicated for sidelink communication sent by the UE within the coverage area, and avoiding interference of sidelink communication to cellular communication.

[0067] Figure 2 In the illustrated embodiment, after determining the time-domain resource range available for sidelink resource mapping according to the sidelink potential time-domain resource configuration information. To further determine the available time-domain resources for sidelink within the time-domain resource range available for sidelink resource mapping, the mapping method of sidelink time-domain resources in sidelink potential time-domain resources can also be pre-configured in the first UE and the second UE. The second UE can determine the available time-domain resources for sidelink within the time-domain resource range available for sidelink resource mapping according to the pre-configured mapping method of sidelink time-domain resources in sidelink potential time-domain resources.

[0068] In one embodiment, the mapping method of sidelink time-domain resources in sidelink potential time-domain resources is mapped within the time-domain resource range available for sidelink resource mapping in the form of a bitmap.

[0069] The following uses several detailed embodiments to elaborate on the wireless communication resource indication method provided in the embodiments of the present application.

[0070] Embodiment 1:

[0071] Figure 3 A schematic diagram of slot resource configuration for a wireless communication resource indication method provided for an embodiment is shown in Figure 3 As shown, the indication method in this embodiment describes the configuration of information effective for sidelink communication in the Cell specific parameter TDD-UL-DL-ConfigCommon configuration information, such as including the starting position of the effective range of sidelink communication in the configuration period of the TDD-UL-DL-ConfigCommon configuration information, and / or the effective length of sidelink communication. Among them, the starting position and the time domain length can be in units of slots, or in units of time (such as milliseconds), or can be indicated after quantifying the time. For example, with an indication granularity of 5 slots or 5 ms, the content of the indication is the number of indication granularities in the configuration period and / or the serial number of the indication granularity corresponding to the starting position.

[0072] In another embodiment, the subcarrier spacing or numerology information corresponding to the indicated information can be included in the indicated information, or default to be the same as the subcarrier spacing or numerology information of the receiving UE, or be the same as the subcarrier spacing or numerology information referred to by the receiving UE.

[0073] Taking Figure 3 as an example, the content of the indication information includes the starting position of the effective range of sidelink communication, with a value of M * 5 * slot, indicating an indication granularity of 5 times the slot. Assuming M = 3, then according to the indication information, it can be determined that the starting position of the effective range of sidelink communication in the TDD-UL-DL-ConfigCommon configuration period is at the 15th slot. Or, the content of the indication information includes the length of the effective range of sidelink communication, with a value of L * 5 ms, indicating an indication granularity of 5 ms. Assuming L = 2, then according to the indication information, it can be determined that the length of the effective range of sidelink communication in the TDD-UL-DL-ConfigCommon configuration period is 10 ms. Combining the structure of the TDD-UL-DL-ConfigCommon configuration, it can be determined that the last 10 ms in the TDD-UL-DL-ConfigCommon configuration period is the effective range of sidelink communication. Among them, the subcarrier spacing information is determined according to the indication information, or according to the subcarrier spacing information or numerology information of the receiving UE, or according to the reference subcarrier spacing information or numerology information.

[0074] Embodiment 2:

[0075] The indication method in this embodiment describes the configuration information effective for sidelink communication in the Cell specific parameter TDD-UL-DL-ConfigCommon. Specifically, it indicates a set of values of TDD-UL-DL-ConfigCommon configuration information. For example, the downlink-uplink transmission period (DL-UL-TransmissionPeriodicity) is 10 ms, the number of downlink slots (nrofDownlinkSlots) is 128, the number of downlink symbols (nrofDownlinkSymbols) is 6, the number of uplink slots (nrofUplinkSlots) is 512, and the number of uplink symbols (nrofUplinkSymbols) is 8. For all or some combinations of TDD-UL-DL-ConfigCommon configuration information, each combination is mapped to an index, and the indication information contains the corresponding index value. According to the index value in the indication information, the parameter configuration values of the corresponding TDD-UL-DL-ConfigCommon configuration information combination can be mapped. Here, the parameter configuration values in the TDD-UL-DL-ConfigCommon configuration information combination can include all parameter values or the configuration values of some parameters included in TDD-UL-DL-ConfigCommon.

[0076] In another embodiment, the subcarrier spacing or numerology information corresponding to the indication information can be included in the indicated configuration information combination, or has a corresponding relationship with the indicated index value. According to the indicated index value, the corresponding subcarrier spacing or numerology information can be determined. Or it is default to be the same as the subcarrier spacing or numerology information of the receiving UE, or the same as the subcarrier spacing or numerology information referred to by the receiving UE.

[0077] As shown in Table 1, the parameter configuration values in the configuration information combination corresponding to the index value index = 0 include: nrofUplinkSymbols is x0, nrofUplinkSlots is y0, dl-UL-TransmissionPeriodicity is T0, and the subcarrier spacing or numerology information is n1. The parameter configuration values in the configuration information combination corresponding to the index value index = 8 include: nrofUplinkSymbols is x8, nrofUplinkSlots is y8, dl-UL-TransmissionPeriodicity is T1, and the subcarrier spacing or numerology information is n2. Here, nrofUplinkSymbols represents the number of UL symbols in the slot before the full UL slot, nrofUplinkSlots represents the number of full UL slots, dl-UL-TransmissionPeriodicity is the configuration period, and the values of the subcarrier spacing information n1 and n2 can be equal.

[0078] Table 1

[0079]

[0080]

[0081] Embodiment 3:

[0082] In this embodiment, the effective resource pattern of sidelink communication is determined according to the pre-configured information, and / or the resource pool or resources of sidelink communication are determined according to the UL / DL TDD configuration information included in the sidelink potential time-domain resource configuration information.

[0083] The UL / DL TDD configuration information includes, but is not limited to, the TDD-UL-DL-ConfigCommon configuration information in the NR configuration information. The specific parameters include at least one of the following: the parameter dl-UL-TransmissionPeriodicity indicating the configuration period, the parameter nrofDownlinkSlots indicating the number of full DL slots, the parameter nrofDownlinkSymbols indicating the number of DL symbols in the slot after the full DL slot, the parameter nrofUplinkSlots indicating the number of full UL slots, and the parameter nrofUplinkSymbols indicating the number of UL symbols in the slot before the full UL slot.

[0084] The ways in which the pre-configuration information indicates the valid resource pattern for sidelink communication include the bitmap method, which indicates whether the corresponding sidelink communication resources are valid in the form of a bit string. For example, '1' in the bit string indicates that the corresponding radio resource is a valid resource for sidelink communication, and '0' in the bit string indicates that the corresponding radio resource is an invalid resource for sidelink communication. The radio resources here include but are not limited to slots and symbols.

[0085] This embodiment further includes: determining the distribution of the valid resources for sidelink communication according to the valid resource pattern indicated by the pre-configuration information, determining the valid frame structure for sidelink communication according to the UL / DL TDD configuration information included in the sidelink potential time-domain resource configuration information, and further determining the valid resources or resource pool for sidelink communication.

[0086] The method for determining the valid resources or resource pool for sidelink communication includes mapping the bit string indicating the valid resource pattern starting from the start position of the UL / DL TDD configuration period. If the length of the bit string is less than the UL / DL TDD configuration period, the bit string indicating the valid resource pattern is mapped repeatedly. When the last mapped bit string exceeds the UL / DL TDD configuration period, the exceeded bits or bit string are truncated, or the mapping of the last bit string is cancelled.

[0087] Figure 4 A schematic diagram of slot resource configuration for another wireless communication resource indication method provided for an embodiment is as Figure 4 shown. Within a UL / DL TDD configuration period, the valid resource range for sidelink communication is determined according to indication information 1, indicating the UL / DL TDD configuration that is valid for sidelink communication within the UL / DL TDD configuration period. The bit string of the bitmap indicated by the pre-configuration information is 001101..., indicating the pattern of the valid resources for sidelink communication, where the valid resources can be slots or symbols. Repeated mapping starts from the start position within the UL / DL TDD configuration period. For the bits of the last mapped bit string that exceed the UL / DL TDD configuration period, truncation processing is performed. As an embodiment, it is also possible to cancel the mapping of the last mapped bit string. By mapping the bit string indicated by the pre-configuration information within the UL / DL TDD configuration period, the resources available for sidelink communication within the valid UL / DL TDD configuration range for sidelink can be determined, or the resource pool for sidelink communication can be determined.

[0088] In another example, if the resource indicated by a bit in the bit string of the pre-configured valid resource pattern overlaps with the downlink (DL) resource of cellular communication (such as NR), the corresponding time-domain resource is not an available resource for sidelink communication.

[0089] Embodiment 4:

[0090] This embodiment describes a method for pre-configuring and indicating valid resources for sidelink communication. A string of bitmaps is pre-configured to indicate the valid resources for sidelink communication. For example, a bit '1' indicates that the corresponding slot or symbol is a valid resource for sidelink communication, and a bit '0' indicates that the corresponding slot or symbol is not a valid resource for sidelink communication.

[0091] For example, the valid range indicated by the bitmap is the UL / DL TDD configuration period. Within one UL / DL TDD configuration period, starting from the starting position for mapping, if the slot or symbol mapped by a bit '1' is a frame structure valid for sidelink communication, and if the slot or symbol mapped by the bit '1' is within the UL / DL TDD configuration range valid for sidelink communication, then the slot or symbol mapped by the bit '1' is a valid resource for sidelink communication or a resource within the resource pool.

[0092] For example, the length of the pre-configured and indicated bitmap is an integer multiple of 20 ms or can be divided evenly by 20 ms.

[0093] In another example, if the resource indicated by a bit in the pre-configured bitmap overlaps with the downlink (DL) resource of cellular communication (such as NR), the corresponding time-domain resource is not an available resource for sidelink communication.

[0094] Figure 5 The structural schematic diagram of a wireless communication resource indication device provided for an embodiment is as Figure 5 shown. The wireless communication resource indication device provided in this embodiment includes: a determination module 51 configured to determine sidelink potential time-domain resource configuration information, where the sidelink potential time-domain resource configuration information is used to indicate the time-domain resource range available for sidelink resource mapping; a transmission module 52 configured to transmit the sidelink potential time-domain resource configuration information through PSBCH.

[0095] The wireless communication resource indication device provided in this embodiment is used to implement Figure 1The wireless communication resource indication method of the illustrated embodiment. The implementation principle and technical effect of the wireless communication resource indication device provided in this embodiment are similar, and will not be elaborated here.

[0096] Figure 6 As shown in the structural schematic diagram of another wireless communication resource indication device provided for an embodiment, Figure 6 As shown, the wireless communication resource indication device provided in this embodiment includes: a receiving module 61 configured to receive sidelink potential time-domain resource configuration information through PSBCH; a determining module 62 configured to determine the time-domain resource range available for sidelink resource mapping according to the sidelink potential time-domain resource configuration information.

[0097] The wireless communication resource indication device provided in this embodiment is used to implement Figure 2 The wireless communication resource indication method of the illustrated embodiment. The implementation principle and technical effect of the wireless communication resource indication device provided in this embodiment are similar, and will not be elaborated here.

[0098] Figure 7 As shown in the structural schematic diagram of a UE provided for an embodiment, Figure 7 As shown, the UE includes a processor 71, a memory 72, a transmitter 73, and a receiver 74; the number of processors 71 in the UE can be one or more, Figure 7 Taking one processor 71 as an example; the processor 71, the memory 72, the transmitter 73, and the receiver 74 in the UE can be connected through a bus or other means, Figure 7 Taking the connection through a bus as an example.

[0099] The memory 72, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the wireless communication resource indication method in this application Figure 1 or Figure 2 in the embodiment (for example, the determining module 51 and the transmitting module 52 in the wireless communication resource indication device or the receiving module 61 and the determining module 62 in the wireless communication resource indication device). The processor 71 runs the software programs, instructions, and modules stored in the memory 72, so as to perform at least one functional application and data processing of the UE, that is, to implement Figure 1 or 2 Figure 2 the wireless communication resource indication method.

[0100] The memory 72 may mainly include a program storage area and a data storage area. Among them, the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of the UE, etc. In addition, the memory 72 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0101] The transmitter 73 is a module or device combination capable of transmitting radio frequency signals into space, such as a combination including a radio frequency transmitter, an antenna, and other devices. The receiver 74 is a module or device combination capable of receiving radio frequency signals from space, such as a combination including a radio frequency receiver, an antenna, and other devices.

[0102] The embodiments of the present application also provide a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute a wireless communication resource indication method when executed by a computer processor. The method includes: determining sidelink potential time-domain resource configuration information, where the sidelink potential time-domain resource configuration information is used to indicate the time-domain resource range available for sidelink resource mapping; sending the sidelink potential time-domain resource configuration information through the PSBCH.

[0103] The embodiments of the present application also provide a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute a wireless communication resource indication method when executed by a computer processor. The method includes: receiving sidelink potential time-domain resource configuration information through the PSBCH; determining the time-domain resource range available for sidelink resource mapping according to the sidelink potential time-domain resource configuration information.

[0104] The embodiments of the present application also provide a wireless communication resource indication system, including a first UE and a second UE. The first UE includes a wireless communication resource indication device as shown in Figure 5 the embodiment; the second UE includes a wireless communication resource indication device as shown in Figure 6 the embodiment.

[0105] Those skilled in the art should understand that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable network browser, or a vehicle-mounted mobile station.

[0106] Generally speaking, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, a microprocessor, or other computing devices, although the present application is not limited thereto.

[0107] Embodiments of the present application can be implemented by a data processor of a mobile device executing computer program instructions, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0108] Any block diagram of a logical process in the drawings of the present application can represent program steps, or can represent interconnected logical circuits, modules, and functions, or can represent a combination of program steps and logical circuits, modules, and functions. The computer program can be stored in a memory. The memory can have any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to Read-Only Memory (ROM), Random Access Memory (RAM), optical memory devices and systems (Digital Video Disc (DVD) or Compact Disc (CD)), etc. The computer-readable medium can include a non-transitory storage medium. The data processor can be any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a Digital Signal Processing (DSP) processor, an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FGPA), and a processor based on a multi-core processor architecture.

Claims

1. A wireless communication resource indication method, characterized in that: include: Determine sidelink potential time domain resource configuration information, where the sidelink potential time domain resource configuration information is used to indicate a range of time domain resources that can be used for sidelink resource mapping; The sidelink potential time domain resource configuration information includes: a sidelink potential valid time domain resource range; the sidelink potential valid time domain resource range includes the number of potential valid time slots of the sidelink potential time domain resource, or the valid time range of the sidelink potential time domain resource in time units; Sending the sidelink potential time domain resource configuration information via a physical side link broadcast channel PSBCH; Among them, the sidelink potential time domain resource configuration information also includes: subcarrier spacing or numerology information, the subcarrier spacing or numerology information has an explicit or implicit mapping relationship with the index value corresponding to the sidelink potential time domain resource configuration information, and the index value corresponding to the sidelink potential time domain resource configuration information has a corresponding relationship with the subcarrier spacing or numerology information.

2. The method according to claim 1, characterized in that The sidelink potential time domain resource configuration information includes: a time domain configuration period of the sidelink potential time domain resource, a starting position of the sidelink potential time domain resource and / or an offset value of the starting position.

3. The method according to claim 1, characterized in that The sidelink potential valid time domain resource range includes the time domain configuration period of the sidelink potential time domain resources, the starting position of the valid time domain resources in the time domain configuration period of the sidelink potential time domain resources, and the valid time domain length of the sidelink potential time domain resources.

4. The method according to claim 3, characterized in that The effective time domain length of the sidelink potential time domain resource is based on a time slot granularity or a time granularity.

5. The method according to claim 1, wherein The sidelink potential time domain resource configuration information includes: an index value of the sidelink potential time domain resource configuration information in a preset sidelink potential time domain resource configuration table, and the sidelink potential time domain resource configuration information includes time division duplex uplink and downlink time slot configuration information.

6. The method according to claim 1, characterized in that Also includes at least one of the following: The subcarrier spacing or numerology information is determined according to network side configuration information; The subcarrier spacing or numerology information is included in the sidelink potential time domain resource configuration information.

7. The method according to any one of claims 1 to 5, characterized in that Also includes: A mapping method of pre-configured sidelink time domain resources in sidelink potential time domain resources, and the time domain resources available for sidelink are determined within the range of time domain resources that can be used for sidelink resource mapping indicated by the sidelink potential time domain resource configuration information according to the mapping method of the sidelink time domain resources in sidelink potential time domain resources.

8. The method according to claim 7, characterized in that The sidelink time domain resources are mapped in the sidelink potential time domain resources in a bitmap manner within the range of time domain resources that can be used for sidelink resource mapping.

9. A wireless communication resource indication method, characterized in that: include: Receive sidelink potential time domain resource configuration information via the physical sidelink broadcast channel PSBCH; The sidelink potential time domain resource configuration information includes: a sidelink potential valid time domain resource range; the sidelink potential valid time domain resource range includes the number of potential valid time slots of the sidelink potential time domain resource, or the valid time range of the sidelink potential time domain resource in time units; Determine a range of time domain resources that can be used for sidelink resource mapping according to the sidelink potential time domain resource configuration information; Among them, the sidelink potential time domain resource configuration information also includes: subcarrier spacing or numerology information, the subcarrier spacing or numerology information has an explicit or implicit mapping relationship with the index value corresponding to the sidelink potential time domain resource configuration information, and the index value corresponding to the sidelink potential time domain resource configuration information has a corresponding relationship with the subcarrier spacing or numerology information.

10. The method according to claim 9, characterized in that The sidelink potential time domain resource configuration information includes: a time domain configuration period of the sidelink potential time domain resource, a starting position of the sidelink potential time domain resource and / or an offset value of the starting position.

11. The method according to claim 9, characterized in that The sidelink potential valid time domain resource range includes the time domain configuration period of the sidelink potential time domain resources, the starting position of the valid time domain resources in the time domain configuration period of the sidelink potential time domain resources, and the valid time domain length of the sidelink potential time domain resources.

12. The method according to claim 11, characterized in that The effective time domain length of the sidelink potential time domain resource is based on a time slot granularity or a time granularity.

13. The method according to claim 9, characterized in that The sidelink potential time domain resource configuration information includes: an index value of the sidelink potential time domain resource configuration information in a preset sidelink potential time domain resource configuration table, and the sidelink potential time domain resource configuration information includes time division duplex uplink and downlink time slot configuration information.

14. The method according to claim 9, characterized in that Also includes: The subcarrier spacing or numerology information is included in the sidelink potential time domain resource configuration information.

15. The method according to any one of claims 9 to 13, characterized in that Also includes: According to a mapping mode of pre-configured sidelink time domain resources in sidelink potential time domain resources, sidelink available time domain resources are determined within the range of time domain resources available for sidelink resource mapping.

16. The method according to claim 15, characterized in that The sidelink time domain resources are mapped in the sidelink potential time domain resources in a bitmap manner within the range of time domain resources that can be used for sidelink resource mapping.

17. A wireless communication resource indication device, characterized in that: include: A determination module is configured to determine sidelink potential time domain resource configuration information, wherein the sidelink potential time domain resource configuration information is used to indicate a time domain resource range that can be used for sidelink resource mapping; the sidelink potential time domain resource configuration information includes: a potential valid time domain resource range of the sidelink; the potential valid time domain resource range of the sidelink includes a potential valid time slot number of the sidelink potential time domain resource, or a valid time range of the sidelink potential time domain resource in time units; A sending module, configured to send the sidelink potential time domain resource configuration information through a physical side link broadcast channel PSBCH; Among them, the sidelink potential time domain resource configuration information also includes: subcarrier spacing or numerology information, the subcarrier spacing or numerology information has an explicit or implicit mapping relationship with the index value corresponding to the sidelink potential time domain resource configuration information, and the index value corresponding to the sidelink potential time domain resource configuration information has a corresponding relationship with the subcarrier spacing or numerology information.

18. A wireless communication resource indication device, characterized in that: include: A receiving module is configured to receive sidelink potential time domain resource configuration information through a physical sidelink broadcast channel PSBCH; The sidelink potential time domain resource configuration information includes: a sidelink potential valid time domain resource range; the sidelink potential valid time domain resource range includes the number of potential valid time slots of the sidelink potential time domain resource, or the valid time range of the sidelink potential time domain resource in time units; a determination module configured to determine a range of time domain resources available for sidelink resource mapping based on the sidelink potential time domain resource configuration information; Among them, the sidelink potential time domain resource configuration information also includes: subcarrier spacing or numerology information, the subcarrier spacing or numerology information has an explicit or implicit mapping relationship with the index value corresponding to the sidelink potential time domain resource configuration information, and the index value corresponding to the sidelink potential time domain resource configuration information has a corresponding relationship with the subcarrier spacing or numerology information.

19. A wireless communication resource indication system, characterized in that: include: a first user equipment UE and a second UE; The first UE includes the wireless communication resource indication device as claimed in claim 17; The second UE includes the wireless communication resource indicating device as claimed in claim 18.

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