Resource indication method, storage medium, and electronic apparatus

Abstract

Provided in the embodiments of the present disclosure are a resource indication method, a storage medium, and an electronic apparatus. The method comprises: a head-node UE sending first scheduling information to a member UE; the head-node UE receiving requirement feedback information from the member UE; and the head-node UE sending, on the basis of the requirement feedback information, second scheduling information to the member UE, such that the member UE performs data transmission on the basis of the second scheduling information. The problem in the related art of a member UE being unable to dynamically request resources from a head-node UE is solved.

Description

Resource indication methods, storage media and electronic devices

[0001] Cross-references to related applications

[0002] This disclosure is based on and claims priority to Chinese patent application CN202410701793.3, filed on May 31, 2024, entitled “Resource Indication Method, Storage Medium and Electronic Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of communications, and more specifically, to a resource indication method, a storage medium, and an electronic device. Background Technology

[0004] With the development of wireless communication technology and the increasing demand for communication from users, in order to meet the communication requirements of low latency, high reliability and high speed, fifth generation mobile communication technology (5G), 5G-A and sixth generation mobile communication technology (6G) have become the trend of future network development and implementation.

[0005] In an industrial field network, there exists a wireless network with one UE as the head node, connecting multiple member UEs. This is similar to the topology of a 3GPP base station connecting multiple UEs. However, the base station's uplink has Sounding Reference Signal (SR), Buffer Status Report (BSR), and Physical Random Access Channel (PRACH) signals to dynamically request physical layer transmission resources for the data to be transmitted. In a wireless network composed of the head node UE and member UEs, how member UEs dynamically request resources from the head node UE is a problem that urgently needs to be solved. Summary of the Invention

[0006] This disclosure provides a resource indication method, storage medium, and electronic device to at least address the problem in the related art that member UEs cannot dynamically request resources from head node UEs.

[0007] According to one embodiment of this disclosure, a resource indication method is provided, comprising: a head node UE sending first scheduling information to a member UE; the head node UE receiving demand feedback information from the member UE; and the head node UE sending second scheduling information to the member UE according to the demand feedback information, so that the member UE performs data transmission according to the second scheduling information.

[0008] According to another embodiment of this disclosure, a resource indication method is provided, comprising: a member UE receiving first scheduling information from a head node UE; the member UE sending demand feedback information to the head node UE; the member UE receiving second scheduling information from the head node UE; and the member UE performing data transmission according to the second scheduling information.

[0009] According to yet another embodiment of this disclosure, a computer-readable storage medium is also provided, wherein a computer program is stored therein, wherein the computer program is configured to perform the steps in any of the above method embodiments when it is run.

[0010] According to yet another embodiment of this disclosure, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0011] According to yet another embodiment of this disclosure, a computer program product is also provided, including a computer program / instructions that are executed by a processor using the steps of any of the above method embodiments. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the communication principle of industrial field network scenarios in related technologies;

[0013] Figure 2 is a hardware structure block diagram of a mobile terminal for a resource indication method according to an embodiment of the present disclosure;

[0014] Figure 3 is a flowchart of a resource indication method according to an embodiment of the present disclosure;

[0015] Figure 4 is another flowchart of the resource indication method according to an embodiment of the present disclosure;

[0016] Figure 5 is another flowchart of the resource indication method according to an embodiment of the present disclosure;

[0017] Figure 6 is a schematic diagram illustrating the principle of the head node UE actively initiating a scheduling query according to an embodiment of this disclosure;

[0018] Figure 7 is a schematic diagram of the resource indication principle using UE1 as an example in an embodiment of this disclosure;

[0019] Figure 8 is a schematic diagram of the process of the head node UE actively initiating a scheduling query according to an embodiment of this disclosure;

[0020] Figure 9 is another schematic diagram illustrating the principle of the head node UE actively initiating a scheduling query according to an embodiment of this disclosure;

[0021] Figure 10 is a schematic diagram illustrating the principle of a member UE actively initiating a scheduling request according to an embodiment of this disclosure;

[0022] Figure 11 is a schematic diagram of the UE networking principle according to an embodiment of this disclosure;

[0023] Figure 12 is a schematic diagram of the principle of the resource indication method in UE networking according to an embodiment of this disclosure;

[0024] Figure 13 is another schematic diagram of the resource indication method in UE networking according to an embodiment of this disclosure;

[0025] Figure 14 is another schematic diagram of the resource indication method in UE networking according to an embodiment of this disclosure;

[0026] Figure 15 is another schematic diagram of the resource indication method in UE networking according to an embodiment of this disclosure;

[0027] Figure 16 is a schematic diagram illustrating the principle of a member UE actively initiating a scheduling request message according to an embodiment of this disclosure;

[0028] Figure 17 is a schematic diagram of the time slot structure according to an embodiment of the present disclosure;

[0029] Figure 18 is a schematic diagram of another time slot structure according to an embodiment of the present disclosure;

[0030] Figure 19 is a schematic diagram of another time slot structure according to an embodiment of this disclosure. Detailed Implementation

[0031] The embodiments of this disclosure will be described in detail below with reference to the accompanying drawings and examples.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0033] Figure 1 is a schematic diagram of the communication principle in an industrial field network scenario. As shown in Figure 1, the future communication network includes not only links from the base station to user equipment (UE) but also direct links between UEs. In side link (SL) communication, when there is a service transmission requirement between user equipments (UEs), the service data between UEs does not pass through the network side, that is, it does not go through the cellular link between the UE and the base station for forwarding. Instead, it is directly transmitted from the data source UE to the target UE via the SL. In the industrial field network scenario, under the coverage of the base station, there are both directly connected UEs and some remote UEs. The remote UEs are directly connected to the head node UE. The small network composed of member UEs and the head node UE can be called a micronet. In the micronet, only the head node UE needs to be connected to the base station. Other UEs only need to establish connections with the head node UE to realize communication between UEs or between UEs and the base station. This technology can reduce the burden on cellular networks, reduce battery power consumption of user devices, well meet the requirements of high data rate services and proximity services, and also support direct communication between devices in scenarios without network coverage, thus meeting the low latency and high reliability communication requirements in industrial field networks.

[0034] The method embodiments provided in this disclosure can be executed in a mobile terminal, computer terminal, or similar computing device. Taking a mobile terminal as an example, FIG2 is a hardware structure block diagram of a mobile terminal for the resource indication method of this disclosure. As shown in FIG2, the mobile terminal may include one or more (only one is shown in FIG2) processors 202 (processor 202 may include, but is not limited to, processing devices such as microprocessors MCUs or programmable logic devices FPGAs) and a memory 204 for storing data. The mobile terminal may also include a transmission device 206 for communication functions and an input / output device 208. It will be understood by those skilled in the art that the structure shown in FIG2 is only illustrative and does not limit the structure of the mobile terminal. For example, the mobile terminal may also include more or fewer components than shown in FIG2, or have a different configuration than shown in FIG2.

[0035] The memory 204 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the resource indication method in this embodiment. The processor 202 executes various functional applications and data processing by running the computer program stored in the memory 204, thus implementing the above-described method. The memory 204 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 204 may further include memory remotely located relative to the processor 202, and these remote memories can be connected to the mobile terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0036] The transmission device 206 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the mobile terminal's communication provider. In one example, the transmission device 206 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 206 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0037] This disclosure provides a resource indication method. Figure 3 is a flowchart of the resource indication method according to this disclosure. As shown in Figure 3, the process includes the following steps:

[0038] Step S302: The head node UE sends the first scheduling information to the member UEs.

[0039] In this embodiment, the small network formed by member UEs and head node UEs is called a micronet. In a micronet, only the head node UE needs to connect to the base station, and other UEs only need to establish connections with the head node UE to achieve communication between UEs or between UEs and the base station. When a member UE needs to send data to other member UEs or to the head node UE, it first needs to obtain the physical layer resources corresponding to the data transmission.

[0040] In this embodiment of the disclosure, the member UE may include multiple member UEs. For ease of distinction, in this embodiment of the disclosure, the member UE may include a first member UE (UE1) and a second member UE (UE2), wherein the number of UE1 and UE2 may be multiple or one.

[0041] In an exemplary embodiment, the head node UE sends first scheduling information to member UEs, including: the head node UE sending the first scheduling information to member UEs linked with it via unicast; or, the head node UE sending the first scheduling information to member UEs linked with it via multicast; or, the head node UE sending the first scheduling information to member UEs linked with it via broadcast; wherein the first scheduling information is used to query whether member UEs have data transmission requirements.

[0042] In this embodiment of the disclosure, the head node UE can send first scheduling information to member UEs according to a preset period, wherein the preset period is the data transmission period of each member UE, the data transmission period of each group of member UEs, or the general data transmission period of member UEs.

[0043] In this embodiment of the disclosure, sending the first scheduling information via broadcast or multicast can save waiting latency for member UEs. The feedback resource corresponding to the first scheduling information sent via broadcast or multicast is a predefined set of feedback resources. The corresponding member UE uniquely identifies a feedback resource from the set of feedback resources corresponding to the first scheduling information and sends a scheduling request or buffer information on that feedback resource.

[0044] In an exemplary embodiment, the head node UE sends first scheduling information to member UEs, including: the head node UE polls and sends the first scheduling information to the member UEs, wherein the first scheduling information includes a pre-scheduled transmission resource of a preset fixed size, the resource location of the pre-scheduled transmission resource is a preset resource location corresponding to the resource location of the first scheduling information, or the resource location of the pre-scheduled transmission resource is determined by the dynamic indication of the first scheduling information.

[0045] In this embodiment of the disclosure, the size of the pre-scheduled transmission resources is notified to the member UE via predefined or pre-configured signaling. The resource location is notified to the member UE via predefined or pre-configured signaling.

[0046] In one exemplary embodiment, the information content of the first scheduling information includes at least one of the following: a source identifier field; a destination identifier field; a function indicator flag field; a time domain resource indicator field; a frequency domain resource indicator field; a resource index indicator field; and a padding bit field.

[0047] In this embodiment of the disclosure, the source identifier field of the first scheduling information is the UE ID of the head node UE, and the destination identifier field of the first scheduling information is the (unicast, multicast, broadcast) member UE ID.

[0048] In one exemplary embodiment, the information content of the second scheduling information includes at least one of the following: source identifier field; destination identifier field; function indicator flag field; modulation and coding scheme indicator field; time domain resource indicator field; frequency domain resource indicator field; hybrid automatic repeat request identifier field; new data indicator field; configuration authorization index field; and padding bit field.

[0049] In this embodiment of the disclosure, the source identifier field of the second scheduling information is the UE ID of the head node UE, and the destination identifier field of the second scheduling information is the (unicast, multicast, broadcast) member UE ID.

[0050] Step S304: The head node UE receives the request feedback information from the member UEs.

[0051] In an exemplary embodiment, the head node UE receives demand feedback information from member UEs, including: the head node UE receiving demand feedback information from member UEs on a first feedback resource, wherein the first feedback resource carrying the demand feedback information is determined based on at least one of the head node UE's identification information, member UE's identification information, first scheduling information, and a resource location set of a control channel carrying the first scheduling information; the first feedback resource carries demand feedback information of one member UE, or carries demand feedback information of a group of member UEs, or carries demand feedback information of all member UEs.

[0052] In this embodiment of the disclosure, the demand feedback information is information corresponding to the first scheduling information sent by the member UE to the head node UE.

[0053] In this embodiment of the disclosure, the head node UE can send first scheduling information to multiple member UEs. However, only member UEs with data transmission needs send demand feedback information to the head node UE, while member UEs without data transmission needs do not need to send demand feedback information to the head node UE.

[0054] In step S306, the head node UE sends second scheduling information to the member UEs based on the demand feedback information, so that the member UEs can perform data transmission according to the second scheduling information.

[0055] In one exemplary embodiment, before the head node UE sends the first scheduling information to the member UEs, the method further includes: the head node UE receiving scheduling request information from the member UEs, wherein the scheduling request information is used to indicate that at least one of the member UEs has a data transmission requirement.

[0056] Figure 4 is another flowchart of the resource indication method according to an embodiment of the present disclosure. As shown in Figure 4, the process includes the following steps:

[0057] In step S402, the head node UE receives scheduling request information from the member UEs through the second feedback resource, wherein the scheduling request information is used to indicate that at least one member UE among the member UEs has a data transmission requirement.

[0058] In an exemplary embodiment, the head node UE receives scheduling request information from member UEs. The second feedback resource is a periodic physical layer resource pre-configured or configured or predefined by the base station or the head node UE for transmitting scheduling request information. The second feedback resource carries the scheduling request information of one member UE, a group of member UEs, or all member UEs.

[0059] In this embodiment, the dynamic scheduling of member UEs all rely on the triggering of the first scheduling information of the head node UE. Although this saves the resource overhead of configuring scheduling requests individually for each UE, the time-domain flexibility is still limited. Therefore, when a member UE has data transmission needs, it can actively initiate a scheduling request to the head node UE.

[0060] In this embodiment of the disclosure, the base station or the head node UE configures periodic second feedback resources for all member UEs.

[0061] In this embodiment of the disclosure, the second feedback resource may also be a set of second feedback resources for a group of member UEs.

[0062] Step S404: The head node UE sends the first scheduling information to the member UEs.

[0063] Step S406: The head node UE receives the request feedback information from the member UEs.

[0064] In this embodiment of the disclosure, when a member UE needs to transmit data, the member UE sends a request feedback message to the head node UE. In this case, the first scheduling information is only used to query whether the member UE has a data transmission request. Simultaneously, if the current member UE, for example UE1, has a data transmission request, the request feedback message is sent to the head node UE on the feedback resource corresponding to the PSCCH channel carrying the first scheduling information of UE1.

[0065] In this embodiment of the disclosure, if the member UE, for example UE2, does not need to transmit data, the scheduling query SCI1 of UE2 sent by the head node UE can be ignored, and no information needs to be fed back on the feedback resource corresponding to the PSCCH channel carrying UE2's SCI1.

[0066] In step S408, the head node UE sends second scheduling information to the member UEs based on the demand feedback information, so that the member UEs can perform data transmission according to the second scheduling information.

[0067] In this embodiment of the disclosure, after receiving feedback information from member UE1, the head node UE sends resource scheduling information, namely the second scheduling information SCI2, in the subsequent time slot, indicating the time and frequency resource information of the data to be sent by UE1.

[0068] This disclosure also provides a resource indication method. Figure 5 is another flowchart of the resource indication method according to this disclosure. As shown in Figure 5, it includes the following steps:

[0069] In step S502, the member UE receives the first scheduling information from the head node UE.

[0070] In this embodiment of the disclosure, the first scheduling information SCI1 can be located in one time slot or multiple time slots, and SCI1 is located at a specific time-frequency resource location within the time slot. The time domain location of the resource where SCI1 is located can be configured independently for each UE, independently for each group of UEs, or configured the same for all UEs.

[0071] In one exemplary embodiment, a member UE is a UE that establishes a link with the head node UE; or, a member UE is one of a group of UEs that establish a link with the head node UE; the first scheduling information is used to query whether the member UE has a data transmission requirement.

[0072] In an exemplary embodiment, the first scheduling information includes a pre-scheduled transmission resource of a preset fixed size, the resource location of the pre-scheduled transmission resource being a preset resource location corresponding to the resource location of the first scheduling information, or the resource location of the pre-scheduled transmission resource being dynamically indicated and determined by the first scheduling information.

[0073] In this embodiment of the disclosure, the size of the pre-scheduled transmission resources is notified to the member UE via predefined or pre-configured signaling. The resource location is notified to the member UE via predefined or pre-configured signaling.

[0074] Step S504: The member UE sends the requirement feedback information to the head node UE.

[0075] In this embodiment of the disclosure, a member UE may be a UE that has received the first scheduling information and has a data transmission requirement.

[0076] In this embodiment of the disclosure, a member UE must be a UE that has established a link with the head node UE. The receiving UE is not limited to any particular member UE that is linked to another head node UE, which also indicates that the UE ID is globally unique, not unique under a specific head node UE.

[0077] In an exemplary embodiment, a member UE sends demand feedback information to a head node UE. The demand feedback information is carried by a first feedback resource, which is determined based on at least one of the following: the identification information of the head node UE, the identification information of the member UE, first scheduling information, and the resource location set of the control channel carrying the first scheduling information.

[0078] In an exemplary embodiment, a member UE sends a demand feedback message to a head node UE, including: when a pre-scheduled transmission resource of a preset fixed size cannot meet the data transmission demand of the member UE, the member UE sends the demand feedback message and third scheduling information to the head node UE through the pre-scheduled transmission resource. The third scheduling information includes at least: a destination identifier and a source identifier, wherein the destination identifier is the head node UE identifier and the source identifier is the UE identifier of the data to be transmitted by the member UE.

[0079] In one exemplary embodiment, the aforementioned demand feedback information includes at least one of the following: buffer size information of the data to be transmitted; service priority information of the data to be transmitted; latency information of the data to be transmitted; and periodic information of the data to be transmitted.

[0080] In this embodiment of the disclosure, after UE1 receives the scheduling query information, it has a new data transmission requirement (for example, UE1 sends it to UE2). It further determines that the pre-scheduled transmission resources indicated by SCI1 cannot meet the transmission of the data to be transmitted. Then, it sends the buffer information of the data to be transmitted to the head node UE (carrying SCI3). After the head node UE receives the data information of UE1, it continues to send a new scheduling indication information SCI2, indicating the resource location information of the data to be transmitted by UE1.

[0081] In an exemplary embodiment, after a member UE receives first scheduling information from a head node UE, the method further includes: if a pre-scheduled transmission resource of a preset fixed size can meet the data transmission needs of the member UE, the member UE sends third scheduling information to a destination UE according to the pre-scheduled transmission resource of the first scheduling information, wherein the third scheduling information includes at least one of a source UE identifier, a destination UE identifier, and resource indication information, the source UE identifier being the source UE identifier of the data to be transmitted by the member UE, and the destination UE identifier being the UE identifier of the UE receiving the data to be transmitted; the destination UE includes at least one of the following: a UE that has established a link with the head node UE, or one of a group of UEs that have established a link with the head node UE, or the head node UE.

[0082] In this embodiment of the disclosure, after UE1 receives the scheduling query information, if there is a new data transmission requirement (for example, UE1 sends it to UE2), it further determines that the pre-scheduled transmission resources indicated by SCI1 can meet the transmission of the data to be transmitted, and then sends the data to be transmitted on the pre-scheduled transmission resources indicated by SCI1.

[0083] In step S506, the member UE receives the second scheduling information from the head node UE.

[0084] In this embodiment of the disclosure, the second scheduling information SCI2 can be located in one time slot or multiple time slots, and the second scheduling information SCI2 is located at a specific time-frequency resource location within the time slot. The time domain location of the resource where the second scheduling information SCI2 is located can be configured independently for each UE, independently for each group of UEs, or configured the same for all UEs.

[0085] In step S508, the member UE performs data transmission according to the second scheduling information.

[0086] In one exemplary embodiment, a member UE performs data transmission based on second scheduling information, including: the member UE sending third scheduling information to UEs other than itself based on the second scheduling information; or, the member UE sending third scheduling information to the head node UE based on the second scheduling information.

[0087] In this embodiment, the first scheduling information SCI1, the second scheduling information SCI2, and the third scheduling information SCI3 can all be carried on the PSCCH, representing indication information used for different indication functions. They can be distinguished by resource location, by CRC scrambling, or by the bit field within the information field.

[0088] In this embodiment of the disclosure, SCI1 and SCI2 are mainly sent by the head node UE, and SCI3 is mainly sent by the member UE.

[0089] In one embodiment, the first scheduling information and the second scheduling information may include the same information content, while the third scheduling information includes different information content. In another embodiment, the first scheduling information, the second scheduling information, and the third scheduling information may also include the same information content.

[0090] The above steps provide a resource indication method, in which the head node UE sends first scheduling information to member UEs; the head node UE receives demand feedback information from member UEs; and the head node UE sends second scheduling information to member UEs based on the demand feedback information, enabling member UEs to perform data transmission according to the second scheduling information. This solves the problem in related technologies where member UEs cannot dynamically request resources from the head node UE, achieving the effect of allowing member UEs to efficiently and dynamically request resources from the head node UE.

[0091] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this disclosure.

[0092] This embodiment also provides a resource indication device, which is configured to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0093] The resource indication device of this disclosure embodiment can be set at the head node UE, and may include: a first sending module, configured to send first scheduling information to member UEs; a first receiving module, configured to receive demand feedback information from member UEs; and a second sending module, configured to send second scheduling information to member UEs according to the demand feedback information, so that member UEs can perform data transmission according to the second scheduling information.

[0094] The resource indication device of this disclosure embodiment can be installed on a member UE and may include: a second receiving module configured to receive first scheduling information from the head node UE; a third sending module configured to send demand feedback information to the head node UE; a third receiving module configured to receive second scheduling information from the head node UE; and a data transmission module configured to perform data transmission according to the second scheduling information.

[0095] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0096] It should be noted that the functional division and naming of the above modules can be set according to the actual situation. As long as the resource indication method in the above method embodiment can be implemented, different functional division and naming methods of functional modules can also be adopted.

[0097] Embodiments of this disclosure also provide a computer-readable storage medium storing a computer program configured to perform the steps in any of the above method embodiments when executed.

[0098] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0099] Embodiments of this disclosure also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0100] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0101] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0102] Embodiments of this disclosure also provide a computer program product, including a computer program / instructions, which are executed by a processor using the steps of any of the method embodiments described above.

[0103] It is obvious to those skilled in the art that the modules or steps of this disclosure described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this disclosure is not limited to any particular combination of hardware and software.

[0104] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, the following description is provided in conjunction with embodiments in different scenarios.

[0105] Example 1

[0106] In this embodiment, the small network formed by member UEs and head node UEs is called a micronet. In a micronet, only the head node UE needs to connect to the base station, and other UEs only need to establish connections with the head node UE to achieve communication between UEs or between UEs and the base station. When a member UE needs to send data to other member UEs or to the head node UE, it first needs to obtain the physical layer resources corresponding to the data transmission.

[0107] In this embodiment of the disclosure, the UE can dynamically request resources in the following two ways:

[0108] Method 1: The head node UE actively queries the data transmission resources that further indicate the data to be transmitted of the member UE, or directly indicates the data transmission resources of the data to be transmitted of the member UE.

[0109] Figure 6 is a schematic diagram of the principle of the head node UE actively initiating a scheduling query in an embodiment of this disclosure. As shown in Figure 6, the head node UE periodically sends scheduling query requests to member UEs (including UE1, UE2, and UE3), which is the first scheduling request in the above embodiment. In this embodiment, the first scheduling request can be Sidelink Control Information (SCI). That is, in the embodiment shown in Figure 6, the first scheduling information can be recorded as SCI1. The member UE with the need feeds back the data transmission need to the head node UE. Then, the head node UE sends scheduling instruction information SCI2, which is the second scheduling information in the above embodiment, to the member UE according to the feedback information.

[0110] In this embodiment of the disclosure, as shown in FIG6, the head node UE polls and sends a first scheduling information SCI1 to each member UE within a period (P). The first scheduling information is unicast information.

[0111] Figure 7 is a schematic diagram of the resource indication principle in this embodiment of the present disclosure, taking UE1 as an example. As shown in Figure 7, after the first member UE, i.e. UE1, receives the information, it feeds back the scheduling request, i.e. the demand feedback information in the above embodiment, or the feedback buffer information, on the Physical Sidelink Feedback Channel (PSFCH) corresponding to the first scheduling information. Further, the head node UE sends the second scheduling information SCI2 according to the feedback information of the member UE. SCI2 indicates the physical layer resource location information of the data to be sent by the member UE.

[0112] In this embodiment of the disclosure, the first scheduling information SCI1 includes the source ID of the head node UE, the target ID of the member UE, and query indication information. The feedback resource corresponding to SCI1 is a predefined feedback resource.

[0113] In this embodiment of the disclosure, the first scheduling information SCI1 can be located in one time slot or multiple time slots, and SCI1 is located at a specific time-frequency resource location within the time slot. The time domain location of the resource where SCI1 is located can be configured independently for each UE, independently for each group of UEs, or configured the same for all UEs.

[0114] In this embodiment of the disclosure, the second scheduling information SCI2 includes the source ID of the head node UE, the target ID of the member UE, resource scheduling indication information, the time domain location of the resource, the frequency domain location of the resource, and the resource period.

[0115] Figure 8 is a flowchart illustrating the process of the head node UE actively initiating a scheduling query according to an embodiment of this disclosure. As shown in Figure 8, the head node UE polls and sends a first scheduling information SCI1 within a period. The first scheduling information is unicast information and indicates a pre-scheduled transmission resource of a fixed size. After receiving the information, the corresponding member UE determines whether the pre-scheduled transmission resource of the fixed size is sufficient to transmit the data to be transmitted. If it is sufficient, the member UE uses the pre-scheduled transmission resource to transmit the data to be transmitted and sends a third scheduling information SCI3 on ​​the pre-scheduled transmission resource (the third scheduling information SCI3 includes the source UE ID of the data to be transmitted, the destination UE ID of the data to be transmitted, and the time-frequency location information of the resource carrying the data to be transmitted).

[0116] If insufficient, the member UE sends buffer information to the head node UE on the fixed-size pre-scheduled transmission resource, and sends third scheduling information SCI3 (which includes the source UE ID and head node UE ID of the data to be transmitted) on the pre-scheduled transmission resource. The head node UE then sends second scheduling information SCI2 based on the received buffer information.

[0117] Figure 9 is another schematic diagram illustrating the principle of the head node UE actively initiating a scheduling query according to an embodiment of this disclosure. As shown in Figure 9, to save the waiting latency of member UEs, the SCI1 of the head node UE can be a broadcast message or a multicast message. The SCI1 includes the head node UE source ID, multicast ID or broadcast ID, and query indication information (indicating that this SCI1 is used for scheduling request query function, not resource indication function). The feedback resource corresponding to SCI1 is a predefined set of feedback resources. The corresponding member UE uniquely determines a feedback resource in the set of feedback resources corresponding to SCI1 and feeds back the scheduling request or buffer information on that feedback resource, i.e., the demand feedback information in the above embodiment. The head node UE sends a unicast second scheduling message SCI2 according to the feedback information of each member UE. SCI2 indicates the time-frequency resource location information required by the member UE that fed back the scheduling request.

[0118] Method 2: Member UEs autonomously and dynamically request resources from the head node UE, and the head node UE further instructs on data transmission resources.

[0119] In Method 1, the dynamic scheduling of all member UEs depends on the triggering of SCI1 by the head node UE. Although this saves the resource overhead of configuring scheduling requests separately for each UE, the time-domain flexibility is still limited.

[0120] Figure 10 is a schematic diagram of the principle of a member UE actively initiating a scheduling request in an embodiment of this disclosure. As shown in Figure 10, when a member UE has a data transmission requirement, it can actively initiate a scheduling request to the head node UE. For example, it can configure a periodic common (general or public) feedback resource. All UEs can provide feedback on this feedback resource. Once the head node UE receives the scheduling request on the feedback resource, it further sends a scheduling query signaling SCI1, receives scheduling feedback information, and sends scheduling instruction information SCI2.

[0121] In this embodiment of the disclosure, the above-mentioned feedback resources can be feedback resources of all UEs, or the head node UE can configure multiple feedback resources, with each feedback resource corresponding to a specific group of member UEs.

[0122] Example 2

[0123] The head node UE actively initiates a scheduling query, and the first scheduling information is used to query whether member UEs have data transmission needs.

[0124] Figure 11 is a schematic diagram of the UE networking principle of this disclosure embodiment. As shown in Figure 11, two member UEs are connected under the head node UE, namely UE1 and UE2. The head node UE or the base station configures UE1 and UE2 to schedule and query the resource location of SCI1.

[0125] Figure 12 is a schematic diagram of the resource indication method in the UE network according to an embodiment of this disclosure. As shown in Figure 12, the SCI query period of UE1 is 10ms and it is located in the first time slot, while the SCI query period of UE2 is 10ms and it is located in the third time slot. Periodic feedback resources are configured on the sidelink, and the feedback resources have a predefined correspondence with the Physical Sidelink Control Channel (PSCCH) that carries the SCI on the sidelink.

[0126] In one embodiment, after receiving the scheduling query information, if UE1 has a new data transmission requirement or data transmission requirement, it sends a 1-bit requirement feedback information to the head node UE on the feedback resource corresponding to the PSCCH channel of SCI1 carrying UE1.

[0127] In one embodiment, UE2 has no data transmission requirement, so the scheduling query SCI1 of UE2 sent by the head node UE is ignored, and no feedback information is required on the feedback resource corresponding to the PSCCH channel carrying UE2's SCI1.

[0128] After receiving feedback information from member UE1, the head node UE sends resource scheduling information SCI2 in the subsequent time slot, indicating the time and frequency resource information of the data to be sent by UE1.

[0129] In this embodiment of the disclosure, the head node UE sends scheduling query information, namely the first scheduling information SCI1, to UE1. After receiving the scheduling query information, if UE1 has a new data transmission requirement, it sends 2 bits of feedback information to the head node on the feedback resource corresponding to the PSCCH channel carrying UE1's SCI1.

[0130] In this context, 00 indicates data transmission with buffer size < threshold 1; 01 indicates data transmission with threshold 1 <= buffer size < threshold 2; 10 indicates data transmission with threshold 2 <= buffer size < threshold 3; and 10 indicates data transmission with threshold 3 <= buffer size < threshold 4. The head node UE generates scheduling information based on UE1's feedback and sends resource scheduling information SCI2 in subsequent time slots, indicating the time-frequency resource information of the data to be transmitted by UE1.

[0131] In this embodiment of the disclosure, the feedback resource can theoretically carry N bits, carrying a maximum of 2^N+1 status information (one of which is "no data transmission required" on the PSFCH).

[0132] Example 3

[0133] The head node UE actively initiates a scheduling query, and the first scheduling information is used to query whether member UEs have data transmission needs.

[0134] Figure 13 is another schematic diagram of the resource indication method in the UE network according to an embodiment of this disclosure. As shown in Figure 13, the head node UE sends a common scheduling query information SCI1 to UE1 and UE2 via broadcast or multicast. After receiving the scheduling query information, if UE1 has a new data transmission requirement, it sends 1 bit of feedback information to the head node UE on the feedback resource of UE1 corresponding to the PSCCH channel carrying the common scheduling query information SCI1. After receiving the scheduling query information, if UE2 has a new data transmission requirement, it sends 1 bit of feedback information to the head node UE on the feedback resource of UE2 corresponding to the PSCCH channel carrying the common scheduling query information SCI1.

[0135] The head node UE generates scheduling information based on the feedback information from UE1, and sends UE1's resource scheduling information SCI2 in the subsequent time slot, indicating the time and frequency resource information of the data to be transmitted by UE1. The head node UE generates scheduling information based on the feedback information from UE2, and sends UE2's resource scheduling information SCI2 in the subsequent time slot, indicating the time and frequency resource information of the data to be transmitted by UE2.

[0136] Example 4

[0137] The head node UE actively initiates a scheduling query, and the first scheduling information includes a pre-set fixed-size pre-scheduled transmission resource.

[0138] Figure 14 is another schematic diagram of the resource indication method in the UE network according to an embodiment of this disclosure. As shown in Figure 14, the head node UE sends scheduling query information SCI1 to UE1. SCI1 indicates the time-frequency location of a physical resource of a predefined size. After receiving the scheduling query information, UE1 has a new data transmission requirement (for example, UE1 sends it to UE2). It further determines that the pre-scheduled transmission resource indicated by SCI1 can meet the transmission of the data to be transmitted, and then sends the data to be transmitted on the pre-scheduled transmission resource indicated by SCI1.

[0139] Figure 15 is another schematic diagram of the resource indication method in the UE network according to an embodiment of this disclosure. As shown in Figure 15, the head node UE sends scheduling query information SCI1 to UE1. SCI1 indicates the time-frequency location of a physical resource of a predefined size. After receiving the scheduling query information, UE1 has a new data transmission requirement (for example, UE1 sends it to UE2). It further determines that the pre-scheduled transmission resource indicated by SCI1 cannot meet the transmission of the data to be transmitted. Then, it sends the buffer information of the data to be transmitted to the head node UE (carrying SCI3) on the resource indicated by SCI1. After receiving the data information of UE1, the head node UE continues to send a new scheduling indication information SCI2, indicating the resource location information of the data to be transmitted by UE1.

[0140] In this embodiment of the disclosure, the location information indication of the pre-scheduled transmission resource indicated by SCI1 can be explicit or implicit.

[0141] In this embodiment, SCI1, SCI2, and SCI3 can all be carried on the PSCCH to represent indication information used for different indication functions. They can be distinguished by resource location, CRC scrambling code, or bit fields within the information field. In this embodiment, SCI1 and SCI2 are mainly sent by the head node UE, while SCI3 is mainly sent by member UEs.

[0142] Example 5

[0143] Member UEs proactively send scheduling request information to the head node UE.

[0144] In this embodiment of the disclosure, the base station or the head node UE configures periodic common feedback resources for all member UEs.

[0145] Figure 16 is a schematic diagram illustrating the principle of a member UE actively initiating a scheduling request message according to an embodiment of this disclosure. As shown in Figure 16, the head node UE receives feedback information on the feedback resource of a certain time slot. Further, the head node UE sends common scheduling query information SCI1 to all member UEs. After receiving the scheduling query information, UE1 has a new data transmission requirement and sends 1 bit of feedback information to the head node UE on the feedback resource of UE1 corresponding to the PSCCH channel carrying the common scheduling query information SCI1. After receiving the scheduling query information, UE2 has a new data transmission requirement and sends 1 bit of feedback information to the head node UE on the feedback resource of UE2 corresponding to the PSCCH channel carrying the common scheduling query information SCI1.

[0146] The head node UE generates scheduling information based on the feedback information from UE1, and sends UE1's resource scheduling information SCI2 in the subsequent time slot, indicating the time and frequency resource information of the data to be transmitted by UE1. The head node UE generates scheduling information based on the feedback information from UE2, and sends UE2's resource scheduling information SCI2 in the subsequent time slot, indicating the time and frequency resource information of the data to be transmitted by UE2.

[0147] Example 6

[0148] In this embodiment of the disclosure, assuming the feedback delay from PSCCH to PSFCH is very short (16µs), the Physical Sidelink Share Channel (PSSCH) and PSFCH can complete transmission and reception within one time slot. Figure 17 is a schematic diagram of the time slot structure of this embodiment of the disclosure. As shown in Figure 17, various SCIs are carried on the PSCCH. The data region is used to carry the data to be transmitted or the reference signal. The PSFCH region contains multiple PRB resources. One or more PRBs within the PSFCH region are used to carry one feedback message. The PSCCH and PSFCH regions are uniquely determined according to predetermined rules.

[0149] In this embodiment, the SCI1 sent by the head node UE to UE1 carries PSCCH1. UE1 will then determine the feedback resource in PSFCH region 1 (region 1). Since SCI1 is sent by the head node UE to UE1, it contains the source ID and destination ID of the head node UE (corresponding to the source ID of UE1). Therefore, after receiving SCI1 on PSCCH1, UE1 further determines the specific feedback resource belonging to UE1 based on the ID information. Assuming there are a total of 20 PRBs in PSFCH region 1 (region 1), and one PSFCH feedback requires one PRB resource, with the head node UE's source ID = 100 and destination ID = 200, the method for determining the PSFCH feedback resource is (100 + 200) mod 20 = 0. Therefore, UE1 uses the first PRB in PSFCH region 1 as the feedback resource from UE1 to the head node UE.

[0150] In this embodiment of the disclosure, different time slot structures can also be used. Figure 18 is a schematic diagram of another time slot structure of this embodiment of the disclosure, which shows a time slot structure with feedback resources. Figure 19 is a schematic diagram of yet another time slot structure of this embodiment of the disclosure, which shows a time slot structure without feedback resources.

[0151] Example 7

[0152] In this embodiment of the disclosure, the head node UE can send first scheduling information and second scheduling information to the member UEs, and the member UEs can send third scheduling information to the head node UE.

[0153] In this embodiment, the first scheduling information SCI1 is mainly sent by the head node UE to member UEs and can be used for scheduling queries, or for scheduling queries and predefined data transmission resource indications. The second scheduling information SCI2 is mainly sent by the head node UE to member UEs and can be used for data resource indication to be transmitted. It can indicate the resource of data to be transmitted from the head node UE to a member UE, or the resource of data to be transmitted from a member UE to the head node UE, or the resource of data to be transmitted from the head node UE to another member UE. The third scheduling information SCI3 is mainly used by any member UE as the SCI format for data indication when transmitting data to another UE.

[0154] Regarding the functional differences of the scheduling information (including the first scheduling information, the second scheduling information, and the third scheduling information) in the embodiments of this disclosure, the different functions of the different scheduling information also correspond to different contents of the scheduling information.

[0155] In one embodiment, the first scheduling information, the second scheduling information, and the third scheduling information may include the same information content.

[0156] The scheduling information may include one of the following: Source ID filed; Destination ID filed; Functional indication flag; Modulation and coding scheme indication (MCS indication); Time domain resource indication; Frequency domain resource indication; Hybrid Automatic Repeat Request ID (HARQ ID); New data indication; Configured grant index; Padding bits.

[0157] For the flag field (function indicator flag):

[0158] The head node UE sends the information, and for the function indication flag filed, if it indicates that only the function of scheduling query SCI is used, then only the source ID and destination ID are effective, for example, the first scheduling information SCI1.

[0159] The head node UE sends the function indication flag filed. If it indicates the function of the scheduling query SCI and the predefined scheduling resources, only the source ID and destination ID are effective. For example, the first scheduling information SCI1.

[0160] When the head node UE sends a function indication flag filed, if it indicates a data resource indication SCI to be transmitted and indicates the resource location information from the head node UE to a member UE, or the resource location information from a member UE to another UE, then all fields are effective, for example, the second scheduling information SCI2.

[0161] When a member UE sends a function indication flag filed, if it indicates a data resource indication SCI to be transmitted and indicates the resource from the member UE to the head node UE or the resource from the member UE to another member UE, then all fields are effective, for example, the third scheduling information SCI3.

[0162] In one embodiment, the first scheduling information and the second scheduling information may include the same information content, while the third scheduling information includes different information content.

[0163] In this embodiment of the disclosure, when the information content of the scheduling information is different, two PSCCH regions are divided in the corresponding frequency domain, and two SCI formats can be set.

[0164] An SCI format is used only for information indication from the head node UE to member UEs, including resource indication or scheduling query indication, such as first scheduling information SCI1 and second scheduling information SCI2.

[0165] The information content of the first scheduling information SCI1 or the second scheduling information SCI2 may include one of the following: Source ID filed; Destination ID filed; Function indicator field; Modulation and coding scheme indicator field (MCS indicator); Time domain resource indicator field; Frequency domain resource indicator field; Hybrid Automatic Repeat Request ID field (HARQ ID); New data indication field; Configured grant index field; Padding bits field.

[0166] For the flag field (function indicator flag):

[0167] The head node UE sends the information, and for the function indication flag filed, if it indicates that only the function of scheduling query SCI is used, then only the source ID and destination ID are effective, for example, the first scheduling information SCI1.

[0168] The head node UE sends the function indication flag filed. If it indicates the function of the scheduling query SCI plus predefined scheduling resources, then only the source ID and destination ID are effective. For example, the first scheduling information SCI1.

[0169] When the head node UE sends a function indication flag filed, if it indicates that the head node UE is sending a data resource indication SCI to be transmitted, and indicates the resource from the head node UE to a member UE or the resource from a member UE to another UE, then all fields are effective, for example, the second scheduling information SCI2.

[0170] The third scheduling information (SCI3) may include one of the following: Source ID field; Destination ID field; Modulation and Coding System Indicator (MCS Indicator); Time Domain Resource Indicator; Frequency Domain Resource Indicator; Hybrid Automatic Repeat Request ID (HARQ ID); New Data Indicator; Configured Grant Index; Padding bits.

[0171] The aforementioned third scheduling information SCI3 is mainly sent when member UEs send data.

[0172] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A resource indication method, comprising: The head node UE sends the first scheduling information to the member UEs; The head node UE receives demand feedback information from the member UEs; The head node UE sends second scheduling information to the member UEs based on the demand feedback information, so that the member UEs can perform data transmission according to the second scheduling information.

2. The method according to claim 1, wherein, The head node UE sends first scheduling information to the member UEs, including: The head node UE sends the first scheduling information to the member UEs that have established a link with the head node UE via unicast; Alternatively, the head node UE may send the first scheduling information to the member UEs that have established a link with the head node UE via multicast. Alternatively, the head node UE may broadcast the first scheduling information to the member UEs that have established a link with the head node UE. The first scheduling information is used to query whether the member UE has a data transmission requirement.

3. The method according to claim 1, wherein, The head node UE receives demand feedback information from the member UEs, including: The head node UE receives demand feedback information from the member UEs on a first feedback resource, wherein the first feedback resource carrying the demand feedback information is determined based on at least one of the identification information of the head node UE, the identification information of the member UEs, the first scheduling information, and the resource location set of the control channel carrying the first scheduling information; the first feedback resource carries demand feedback information of one member UE, or carries demand feedback information of a group of member UEs, or carries demand feedback information of all member UEs.

4. The method according to claim 1, wherein, The head node UE sends first scheduling information to the member UEs, including: The head node UE polls and sends the first scheduling information to the member UEs. The first scheduling information includes a pre-scheduled transmission resource of a preset fixed size. The resource location of the pre-scheduled transmission resource is a preset resource location corresponding to the resource location of the first scheduling information, or the resource location of the pre-scheduled transmission resource is determined by the dynamic indication of the first scheduling information.

5. The method according to claim 1, wherein, The information content of the first scheduling information includes at least one of the following: Source identifier field; destination identifier field; function indicator field; time domain resource indicator field; frequency domain resource indicator field; resource index indicator field; padding bit field.

6. The method according to claim 1, characterized in that, in, The information content of the second scheduling information includes at least one of the following: Source identifier field; Destination identifier field; Function indicator field; Modulation and coding scheme indicator field; Time domain resource indicator field; Frequency domain resource indicator field; Hybrid automatic repeat request identifier field; New data indicator field; Configuration authorization index field; Padding bit field.

7. The method according to claim 1, wherein, Before the head node UE sends the first scheduling information to the member UEs, the method further includes: The head node UE receives scheduling request information from the member UE through the second feedback resource, wherein the scheduling request information is used to indicate that the member UE has data transmission needs.

8. The method according to claim 7, wherein, The head node UE receives scheduling request information from the member UEs through the second feedback resource, wherein, The second feedback resource is a periodic physical layer resource pre-configured, configured, or predefined by the base station or the head node UE for transmitting the scheduling request information. The second feedback resource carries the scheduling request information of one member UE, or carries the scheduling request information of a group of member UEs, or carries the scheduling request information of all member UEs.

9. A resource indication method, comprising: Member UEs receive the first scheduling information from the head node UE; The member UE sends a request feedback information to the head node UE; The member UE receives second scheduling information from the head node UE; The member UE performs data transmission according to the second scheduling information.

10. The method according to claim 9, wherein, The member UE receives first scheduling information from the head node UE, wherein, The member UE is a UE that has established a link with the head node UE; Alternatively, the member UE is one of a group of UEs that have established a link with the head node UE; The first scheduling information is used to query whether the member UE has a data transmission requirement.

11. The method according to claim 9, wherein, The member UE receives first scheduling information from the head node UE, wherein, The first scheduling information includes a pre-scheduled transmission resource of a preset fixed size. The resource location of the pre-scheduled transmission resource is a preset resource location corresponding to the resource location in the first scheduling information, or the resource location of the pre-scheduled transmission resource is dynamically indicated and determined by the first scheduling information.

12. The method according to claim 9, wherein, The member UE sends a request feedback message to the head node UE. The demand feedback information is carried by a first feedback resource, which is determined based on at least one of the following: the identification information of the head node UE, the identification information of the member UE, the first scheduling information, and the resource location set of the control channel carrying the first scheduling information.

13. The method according to claim 11, wherein, The member UE sends requirement feedback information to the head node UE, including: If the pre-scheduled transmission resources of the preset fixed size cannot meet the data transmission needs of the member UE, the member UE sends the demand feedback information and third scheduling information to the head node UE through the pre-scheduled transmission resources. The third scheduling information includes at least: a destination identifier and a source identifier. The destination identifier is the identifier of the head node UE, and the source identifier is the UE identifier of the data to be transmitted by the member UE.

14. The method according to any one of claims 12 or 13, wherein, The feedback information includes at least one of the following: The buffer size information of the data to be transmitted; the service priority information of the data to be transmitted; the latency information of the data to be transmitted; and the periodic information of the data to be transmitted.

15. The method according to claim 12, wherein, After the member UE receives the first scheduling information from the head node UE, the method further includes: When the pre-scheduled transmission resources of the preset fixed size can meet the data transmission needs of the member UE, the member UE sends third scheduling information to the destination UE according to the pre-scheduled transmission resources of the first scheduling information, wherein, The third scheduling information includes at least one of the source UE identifier, the destination UE identifier, and resource indication information. The source UE identifier is the source UE identifier of the data to be transmitted by the member UE, and the destination UE identifier is the UE identifier of the UE that receives the data to be transmitted. The target UE includes at least one of the following: a UE that has established a link with the head node UE, or a UE that has established a link with the head node UE, or the head node UE.

16. A computer-readable storage medium storing a computer program, wherein, When the computer program is executed by a processor, it implements the method described in any one of claims 1 to 15.

17. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of any one of claims 1 to 15.

18. A computer program product comprising a computer program / instructions that, when executed by a processor, implement the method of any one of claims 1 to 15.

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