Data transmission method, access node, terminal, and storage medium

Abstract

This application discloses a data transmission method, an access node, a terminal, a computer storage medium, and a computer program product, in which a base station configures resources for a terminal device, instructs the terminal device to determine a target reception scheme according to the resources, causes the terminal device to adopt the target reception scheme to perform measurements and obtain report information, and the terminal device transmits the report information to the base station to complete beam training.

Description

[Technical Field]

[0001] This application is filed based on and claims priority from a Chinese patent application bearing application number 202310172000.9 and filed on February 17, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of communications, and in particular to a data transmission method, an access node, a terminal, a computer storage medium, and a computer program product. [Background technology]

[0003] As wireless communication technology develops, low-frequency resources are becoming increasingly scarce. The millimeter-wave frequency band, with its greater spectral resources and bandwidth, is becoming a key frequency band for future wireless communication systems. However, millimeter-wave frequency bands have drawbacks, such as short wavelengths, high path loss, and sensitivity to blocking. To overcome these issues, millimeter-wave signals typically require beam management to establish and maintain proper beam pairs, align the beam directions of transmitters and receivers, and perform beamforming to achieve optimal transmission performance.

[0004] In conventional technologies, beams are typically selected from a predetermined analog beam codebook, so the optimal beam training method is to completely scan all transmit / receive beam pairs in the codebook. However, this can result in excessive training overhead, measurement power consumption, and processing delay. Therefore, how to achieve ideal beamforming gain and spectral efficiency with a smaller beam training overhead is an urgent issue to be addressed. Summary of the Invention [Problem to be solved by the invention]

[0005] Embodiments of the present application provide a data transmission method, an access node, a terminal, a computer storage medium, and a computer program product that aim to ensure ideal beamforming gain and spectral efficiency while reducing beam training overhead. [Means for solving the problem]

[0006] In a first aspect, an embodiment of the present application provides a data transmission method, including steps of configuring resources for a terminal, instructing the terminal to determine a target reception scheme according to the resources, and causing the terminal to perform measurements according to the target reception scheme to obtain report information; and receiving the report information transmitted by the terminal.

[0007] In a second aspect, an embodiment of the present application further provides a data transmission method, including: determining a target reception method based on resource configuration information of an access node; receiving through the target reception method and obtaining report information through measurement; and transmitting the report information to the access node.

[0008] In a third aspect, an embodiment of the present application further provides a data transmission method applicable to a communication system including an access node and a terminal, the data transmission method including: a step in which the access node configures resources for the terminal; a step in which the terminal determines a target reception method based on resource configuration information of the access node; a step in which the terminal receives using the target reception method and obtains report information by measurement; a step in which the terminal transmits the report information to the access node; and a step in which the access node receives the report information transmitted by the terminal.

[0009] In a fourth aspect, embodiments of the present application provide an access node comprising at least one processor and at least one memory for storing at least one program, the access node performing the data transmission method according to the first aspect when the at least one program is executed by the at least one processor.

[0010] In a fifth aspect, embodiments of the present application provide a terminal comprising at least one processor and at least one memory for storing at least one program, the terminal performing the data transmission method according to the second aspect when the at least one program is executed by the at least one processor.

[0011] In a sixth aspect, embodiments of the present application further provide a computer-readable storage medium having stored thereon a processor-executable program that, when executed by a processor, performs the data transmission method described above.

[0012] In a seventh aspect, an embodiment of the present application further provides a computer program product, the computer program or the computer instructions being stored in a computer-readable storage medium, the computer program or the computer instructions being read by a processor of a computing device, the processor executing the computer program or the computer instructions to cause the computing device to perform the data transmission method. [Effects of the Invention]

[0013] According to the data transmission method, access node, terminal, computer storage medium, and computer program product of the embodiments of the present application, a base station configures resources for a terminal device, instructs the terminal device to determine a target reception method according to the resources, causes the terminal device to adopt the target reception method to perform measurements to obtain report information, and finally transmits the report information to the base station to complete beam training. Compared with the full scanning method in the related art, the terminal device adopts the target reception method instructed by the base station to perform reception and measurements, which not only saves beam training overhead but also ensures beamforming effectiveness. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram of P-2 beam management in the related art. [Figure 2] FIG. 1 is a schematic diagram of P-3 beam management in the related art. [Figure 3] 1 is a schematic block diagram of a wireless communication system 300 according to an embodiment of the present application. [Figure 4] 1 is a flowchart of a data transmission method according to an embodiment of the present application; [Figure 5] FIG. 10 is a schematic diagram of a data retransmission instruction flow according to an embodiment of the present application; [Figure 6] 1 is a flowchart of a data transmission method according to an embodiment of the present application; [Figure 7] 10 is a schematic flowchart illustrating receiving a data retransmission instruction and performing data retransmission according to an embodiment of the present application; [Figure 8] FIG. 2 is a schematic diagram of multiple time slots according to one embodiment of the present application; [Figure 9] FIG. 2 is a structural schematic diagram of an access node according to an embodiment of the present application; [Figure 10] FIG. 2 is a structural schematic diagram of a terminal device according to an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0015] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be described in more detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are for the purpose of illustrating the present application, and are not intended to limit the present application.

[0016] Although the division of functional modules is performed in the schematic diagram of the device and the logical order is shown in the flowchart, in some cases the division of modules in the device may differ, or the steps shown or described may be performed in a different order from that in the flowchart. Terms such as "first," "second," etc. in this specification and claims and the above drawings are terms for distinguishing similar objects and are not necessarily used to describe a specific order or priority.

[0017] In the embodiments of the present application, terms such as "further," "exemplary," or "optionally" are used as examples, illustrations, or descriptions, and should not be construed as preferred or advantageous over other embodiments or designs. The use of terms such as "further," "exemplary," or "optionally" is intended to specifically present the associated concept.

[0018] As wireless communication technology advances, low-frequency resources are becoming increasingly scarce. Therefore, millimeter-wave (mmWave) frequency bands, offering greater spectral resources and bandwidth, are becoming a key frequency band for future wireless communication systems. However, mmWave frequency bands have short wavelengths and much more challenging propagation conditions than conventional sub-6 GHz frequency bands, resulting in problems such as high path loss and sensitivity to blocking. To overcome these issues, mmWave signals typically require beamforming, which concentrates signal energy in a small angular space to form a beam with greater gain. Beam management establishes and maintains appropriate beam pairs, aligns the beam direction between the transmitter and receiver, and achieves optimal transmission performance. Beam management is crucial for mmWave communication systems and includes beam scanning, beam measurement, beam reporting, and beam direction.

[0019] Beam scanning, an important part of beam management, is the process by which a base station or terminal device sequentially covers a spatial region using different analog beams. During beam scanning, the base station or terminal device sequentially transmits beams from the entire codebook or a subset of the codebook to find a good transmit-receive beam pair for data and control channels. The beam scanning process mainly includes a transmit-side beam scanning P-2 process and a receive-side beam scanning P-3 process. Specifically, as shown in FIG. 1, in the P-2 beam management process, the base station configures an upper layer parameter resource set (NZP-CSI-RS-ResourceSet) that includes multiple downlink Channel State Information Reference Signal (CSI-RS) or Synchronization Signal Block (SSB) resources transmitted in different transmit beams. The terminal device then receives and measures the CSI-RS or SSB resources in a fixed receive beam to complete the transmit-side beam measurement process. More specifically, each NZP-CSI-RS resource is included in one beam and transmitted, allowing the terminal device to measure the Reference Signal Receiving Power (RSRP) of the CSI-RS or SSB transmitted on that NZP-CSI-RS resource and compare the beam quality.

[0020] Furthermore, if the base station does not provide auxiliary information on the receiving beam of the terminal device, the terminal device may need to poll the receiving beam to achieve scanning of the receiving beam, i.e., repeatedly transmit the CSI-RS resource set for beam management multiple times, and the terminal device may need to receive using a different receiving beam each time.

[0021] As shown in Figure 2, in the P-3 beam management process, the base station configures an upper layer parameter resource set NZP-CSI-RS-ResourceSet that includes multiple CSI-RS or SSB resources each transmitted using the same transmission beam, and the terminal device achieves receiving beam scanning by receiving and measuring CSI-RS or SSB resources in different receiving beams. Furthermore, to achieve transmitting beam scanning, the base station may need to poll the transmitting beam, i.e., configure multiple CSI-RS resource sets transmitted using different transmitting beams.

[0022] The resource in this application refers to one or more resources, and is specifically realized by a resource set or a resource setting. A resource setting includes one or more resource sets, and a resource set includes one or more resources.

[0023] Since beams are typically selected from a predetermined analog beam codebook, a complete scan of all transmit / receive beam pairs in the codebook is the optimal means of beam training in the related art, but this can result in excessive training overhead, measurement power consumption, and processing delay.

[0024] Based on this, in order to reduce beam training overhead while improving beam alignment accuracy, embodiments of the present application provide a data transmission method, an access node, a terminal, a computer storage medium, and a computer program product, in which a base station configures resources for a terminal device, instructs the terminal device to determine a target reception method according to the resources, causes the terminal device to adopt the target reception method to perform measurements and obtain report information, and finally transmits the report information to the base station to complete beam training. Compared with the full scanning method in the related art, the terminal device adopts the target reception method instructed by the base station to perform reception and measurements, which not only saves beam training overhead but also ensures beamforming effectiveness.

[0025] The present embodiment is applicable to various communication systems, and therefore the following description is not limited to a specific communication system. For example, the present embodiment may be applicable to a Global System for Mobile Communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a 5th Generation (5G) system, or a New Radio (NR) 6th Generation (6G) system.

[0026] 3 is a schematic block diagram of a wireless communication system 300 applied to an embodiment of the present application. The wireless communication system 300 may include one or more access nodes and one or more terminal devices, such as a first access node 310, a second access node 320, and one or more terminal devices 330 located within the coverage ranges of the first access node 310 and the second access node 320, as shown in FIG. 1. The terminal devices 330 may be mobile or stationary. Both the first access node 310 and the second access node 320 can communicate with the terminal devices 330 via a wireless air interface. The first access node 310 and the second access node 320 provide communication coverage for a specific geographic area and can communicate with terminal devices located within their coverage areas.

[0027] In the embodiments of the present application, the first access node 310 or the second access node 320 may be a base transceiver station (BTS) in a global mobile communication GSM system or CDMA, a base station (NodeB, NB) in a WCDMA system, an evolved base station (eNB or eNodeB) in an LTE system, a radio controller in a cloud radio access network (CRAN) scenario, a relay station, an access point, an in-vehicle device, a wearable device, an access node in a future 5G network or an access node in a future evolved PLMN network, for example, a transmission and reception point (TRP) or a transmission point (TP) in an NR system, a base station (gNB) in an NR system, or one or a set of antenna panels (including multiple antenna panels) of a base station in a 5G system. The embodiments of the present application are not particularly limited thereto.

[0028] The terminal device 330 may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment. The access terminal may be a mobile phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a smart home device, a drone device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (PLMN), etc. This application does not particularly limit this.

[0029] Some concepts related to embodiments of the present application are described below. A reception scheme may be referred to as a reception beam. Here, a beam can be understood as a resource such as a reference signal resource, a transmit spatial filter, a receive spatial filter, a transmit precoding, a receive precoding, an antenna port, an antenna weight vector, or an antenna weight matrix. Since a beam can be bound to several time-frequency code resources for transmission, the beam sequence number can be replaced with a resource index, for example, a reference signal resource index. A beam may also be a transmission (transmission / reception) scheme. Since transmission schemes can include space division multiplexing, frequency domain / time domain diversity, etc., a beam for transmitting a signal can be referred to as a transmission beam (Tx beam), and a beam for receiving a signal can be referred to as a reception beam (Rx beam).

[0030] The technology for forming a beam may be a beamforming technology or other technology. For example, the beamforming technology may specifically be a digital beamforming technology, an analog beamforming technology, or a digital / analog hybrid beamforming technology. A transmit beam may refer to a distribution of signal strength formed in spatially different directions after a signal is transmitted through an antenna, and a receive beam may refer to a distribution of signal strength formed in spatially different directions of a wireless signal received from an antenna.

[0031] In the following examples, the terms "receiving beam" and "receiving method" are used interchangeably, and unless the difference is emphasized, they have the same meaning.

[0032] The "beam pairing relationship" refers to the pairing relationship between a transmit beam and a receive beam, i.e., the pairing relationship between a spatial transmit filter and a spatial receive filter. By transmitting signals between the transmit beam and the receive beam that have the beam pairing relationship, a large beamforming gain can be obtained.

[0033] In one implementation, the transmitting side and the receiving side may obtain a beam pairing relationship by beam training. Specifically, the transmitting side may transmit a reference signal by a beam scanning method, and the receiving side may also receive the reference signal by a beam scanning method. Specifically, the transmitting side may form beams with spatially different directions by a beamforming method, and may poll multiple beams with different directions to transmit the reference signal through the beams with different directions, so as to maximize the power of transmitting the reference signal in the direction pointed by the transmitting beam. The receiving side may also form beams with spatially different directions by a beamforming method, and may poll multiple beams with different directions to receive the reference signal through the beams with different directions, so as to maximize the power of receiving the reference signal at the receiving side in the direction pointed by the receiving beam.

[0034] By traversing each transmit beam and receive beam, the receiver can perform channel measurements based on the received reference signal and report the measurement results to the transmitter as channel state information (CSI). For example, the receiver can report some reference signal resources with relatively large RSRPs to the transmitter, such as by reporting the identifiers of the reference signal resources or the identifiers of the reference signal resources and the RSRPs corresponding to those reference signal resources. This allows the transmitter to transmit and receive signals by adopting a beam pairing relationship with good channel quality when transmitting data or signaling.

[0035] The channel measurement according to the present application also includes beam measurement for measuring a reference signal to obtain beam quality information, and parameters for evaluating beam quality include, but are not limited to, RSRP. For example, beam quality may be evaluated by parameters such as Reference Signal Receiving Quality (RSRQ), Signal-to-Noise Ratio (SNR), and Signal-to-Interference plus Noise Ratio (SINR). For convenience of explanation, in the embodiments of the present application, the channel measurement can be considered as a beam measurement unless otherwise specified.

[0036] The base station may perform Quasi-Co-Location (QCL) configuration for two reference signals and notify the terminal device to describe channel characteristic assumptions. Parameters involved in quasi-co-location include at least one of Doppler spread, Doppler shift, delay spread, average delay, average gain, and spatial parameters. Among them, spatial parameters may include spatial reception parameters such as angle of arrival, spatial correlation of receive beams, average delay, and correlation of time-frequency channel responses (including phase information).

[0037] Below, various embodiments of the data transmission method of the present application are proposed based on the implementation environment shown in the above Figure 3. For convenience of explanation, the following description will take a base station as an example of an access node and a UE as an example of a terminal.

[0038] As shown in Figure 4, Figure 4 is a flowchart of a data transmission method according to an embodiment of the present application, which may be applied to, but is not limited to, the first access node 310 or the second access node 320 in the implementation environment shown in Figure 3. The data transmission method may include, but is not limited to, step S1000 and step S2000.

[0039] S1000: A base station configures resources for a terminal, instructs the terminal to determine a target reception mode according to the resources, and allows the terminal to perform measurements according to the target reception mode to obtain report information.

[0040] In this step, a resource setting type specialized for data collection is defined, and the parameter settings in this resource setting include at least one of quasi-co-location QCL setting information of the receiving method, periodicity information and time slot offset information, duration information, and data type information that needs to be reported.

[0041] In one embodiment, if the parameter setting in the resource setting includes quasi-co-location QCL setting information of the receiving scheme, the base station instructs the terminal to determine one or more receiving schemes as target receiving schemes according to the quasi-co-location QCL setting information of the receiving scheme. The target receiving scheme here can be understood as a target receiving beam, that is, the UE can determine which receiving beam to adopt to receive and measure L1-RSRP on the allocated resource according to the quasi-co-location QCL setting information in the parameter setting, and these selected beams are called target receiving beams.

[0042] In one embodiment, if the base station does not configure this parameter for the UE, it means that the UE sequentially employs all receive beams to receive and measure L1-RSRP on the assigned resources, or it means that the UE independently determines which receive beam to employ to receive and measure L1-RSRP on the assigned resources, for example, the UE employs receive beam 1 to receive and measure L1-RSRP on the assigned resources.

[0043] In one embodiment, when the base station configures the QCL information of the receive beam for the UE, the UE indicates that it will receive and measure L1-RSRP on the assigned resource based on one or more fixed receive beams, and these multiple fixed receive beams form one receive beam group. Specifically, the reference signal "referenceSignal" of the QCL-info in the transmission configuration indication state (TCI state) is configured as the target channel state information reference signal (CSI-RS).

[0044] If multiple fixed receive beams need to be instructed to receive and measure L1-RSRP on the assigned resources, the QCL information of multiple receive beams may be configured. For example, setting the reference signal of the QCL-info in TCI state 1 to CSI-RS 1 and the reference signal of the QCL-info in TCI state 2 to CSI-RS 2 instructs the UE to adopt receive beam 1, which is the same receive beam recently used to receive CSI-RS 1, and receive beam 2, which is the same receive beam recently used to receive CSI-RS 2, when measuring L1-RSRP on the assigned data collection resources.

[0045] In this step, the base station in the embodiment of the present application defines parameters in resource setting specific to data collection, thereby instructing the UE to receive and measure using a specific beam among beams in a portion of time or a portion of space. Compared with the full scanning method in the related art, this method can significantly reduce the overhead of beam training while achieving ideal beamforming. Meanwhile, in some application scenarios, if a beam prediction model trained by machine learning is available, it is possible to obtain all beam information by using beams in a portion of time or a portion of space as model input to predict beams in other times or other space regions.

[0046] In this step, the data type information that needs to be reported includes at least one of the following: Layer 1 reference signal received power L1-RSRP, channel state information resource indication CRI, other auxiliary information, such as received beam related information, timestamp information, UE location information, etc.

[0047] In one embodiment, if the data type information that needs to be reported includes Layer 1 reference signal received power L1-RSRP, the access node and the UE predefine the quantization precision of the Layer 1 reference signal received power L1-RSRP.

[0048] In one embodiment, if the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is greater than or equal to a first threshold, the UE quantizes the Layer 1 reference signal received power L1-RSRP with a first quantization precision; if the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is less than the first threshold, the UE quantizes the Layer 1 reference signal received power L1-RSRP with a second quantization precision; if the modulation and coding scheme MCS index value is less than the second threshold, the UE quantizes the Layer 1 reference signal received power L1-RSRP with a third quantization precision, where the second quantization precision is higher than the first quantization precision and the third quantization precision is higher than the first quantization precision.

[0049] The quantization accuracy of the reference signal received power affects the reporting overhead of the UE, with higher accuracy resulting in higher overhead and lower accuracy resulting in lower overhead. Therefore, depending on the application scenario, the quantization accuracy of the reference signal received power can be adaptively adjusted to reduce reporting overhead while ensuring quantization accuracy.

[0050] In one embodiment, when the UE is located at a cell center or when the RSRP and / or SINR are relatively high, the quantization can be performed using the original quantization accuracy of the related art, i.e., there is no need to improve the quantization accuracy. For example, when the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR are equal to or greater than a first threshold, the base station and the UE predefine that the maximum reference signal received power RSRP uses 7-bit quantization accuracy and the differential reference signal received power RSRP uses 4-bit quantization accuracy.

[0051] In one embodiment, when the UE is located at a cell edge or when the RSRP and / or SINR are relatively low, the quantization precision can be improved, i.e., the number of quantization bits can be increased. For example, when the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR are less than a first threshold, the base station and the UE predefine the maximum reference signal received power RSRP to use E-bit quantization precision and the differential reference signal received power RSRP to use F-bit quantization precision, where E is an integer greater than 7 and F is an integer greater than 4. For example, the base station and the UE predefine the maximum reference signal received power RSRP to use 8-bit quantization precision and the differential reference signal received power RSRP to use 5-bit quantization precision.

[0052] In one embodiment, if the modulation and coding scheme MCS index value is less than the second threshold, the quantization precision can be improved, i.e., the number of quantization bits can be increased; otherwise, quantization can be performed using the original quantization precision of the related art.

[0053] The specific number of bits of the quantization precision can be flexibly adjusted according to actual needs, and is not limited to the quantization precision provided in the above embodiment.

[0054] S2000: A base station receives report information sent by a terminal.

[0055] In this step, the UE measures the L1-RSRP on the allocated resources based on the resource configuration provided by the base station, and reports the L1-RSRP and / or CRI data to the base station, and the base station receives the reporting information sent by the UE.

[0056] In some embodiments of step S1000, a method for saving reporting overhead by adjusting quantization precision has been described. However, in the UE reporting process, it is possible to define which data is reported preferentially by predefining reporting priorities.

[0057] In one embodiment, when the reporting information includes L1-RSRP and / or CRI, the base station and the UE predefine data reporting priorities for the L1-RSRP and / or CRI.

[0058] Examples of L1-RSRP and / or CRI information reporting for spatial domain beams are provided below.

[0059] In one embodiment, the UE reports L1-RSRP and / or CRI separately in a first part (Part 1) and a second part (Part 2), and the reporting priority of Part 1 is predefined to be higher than that of Part 2. Regarding the specific content stored in Part 1 and Part 2, specific L1-RSRP and / or CRI content to be reported can be assigned based on the priority of CSI information, in accordance with the principle of backward compatibility. Because the reporting priority of Part 1 is higher than that of Part 2, when reporting information, the content of Part 1 is reported first. If the reporting overhead is sufficient, the content of Part 2 is reported. If the reporting overhead is insufficient to store all of the content of Part 2, only part of the content of Part 2 can be reported first according to the reporting priority of the content of Part 2. In some embodiments, the content of Part 1 and Part 2 is assigned by allocating reporting information to Set A and Set B, assuming that Set B is a subset of Set A, and configuring the contents of Set A and Set B.

[0060] In one embodiment, the information in the first part includes up to L L1-RSRPs and / or CRIs measured on the resource and an indication of the overhead occupied by the second part, where L is an integer greater than or equal to 1. A preset threshold may determine which L1-RSRPs and / or CRIs are reported with priority, i.e., L1-RSRPs and / or CRIs greater than the preset threshold are reported with priority as the contents of the first part.

[0061] In one embodiment, the second part of the information includes some or all of the remaining L1-RSRPs and / or CRIs other than the maximum L L1-RSRPs and / or CRIs measured on the resource, where L is an integer greater than or equal to 1, i.e., the second part of the information is other information excluding the first part of the information, some or all of which is reported only after the reporting of the first part is completed.

[0062] In one embodiment, when only part of the information in the second part can be reported, the remaining L1-RSRP and / or CRI are divided into K groups in descending order, and the first M groups are preferentially stored in the second part, where K is an integer greater than or equal to 1 and M is an integer greater than or equal to 1 and less than K. That is, the information in the second part also has an internal priority, and when overhead is insufficient, information with a higher priority is selected and reported. Note that grouping in descending order means that the L1-RSRP and / or CRI values ​​are first sorted in descending order, and then the L1-RSRP and / or CRI are divided into multiple groups according to a preset group size, and the group with the highest priority is reported preferentially.

[0063] Examples of predicted L1-RSRP and / or CRI information reporting for time domain beams are provided below.

[0064] In one embodiment, if a UE report only reports channel state information CSI on one time slot, only the timestamp information corresponding to that time slot needs to be added, similar to the reporting method of L1-RSRP and / or CRI information of a spatial domain beam.

[0065] In one embodiment, when one report from a UE includes channel state information (CSI) corresponding to multiple time slots, the first part of the information includes up to L L1-RSRPs and / or CRIs measured on resources in the first time slot, corresponding timestamp information, and an indication of the overhead occupied by the second part, where L is an integer greater than or equal to 1. The second part of the information includes the remaining L1-RSRPs and / or CRIs other than those in the first part of the information.

[0066] In addition, the information in the second part also has a reporting order priority, which is mainly determined according to the L1-RSRP and / or CRI size and the priority between time slots, and a specific example will be provided below to explain this.

[0067] In one embodiment, the priority between time slots is higher than the priority of L1-RSRP and / or CRI size, i.e., when storing L1-RSRP and / or CRI content, the priority between different time slots is considered first, and then the priority due to differences in L1-RSRP and / or CRI size is considered.

[0068] In one embodiment, the priority of L1-RSRP and / or CRI size is higher than the priority between time slots, i.e., when storing L1-RSRP and / or CRI content, the priority due to differences in L1-RSRP and / or CRI size is considered first, and then the priority between different time slots is considered.

[0069] In the above embodiment, the reporting priority of the reporting information is predefined, which can effectively save the reporting overhead and ensure that important information is reported preferentially with limited overhead.

[0070] 5 is a schematic diagram of a data retransmission instruction flow according to an embodiment of the present application. As shown in FIG. 5, the embodiment of the present application further includes step S3000.

[0071] Step S3000: If a preset retransmission condition is met, the terminal is instructed to retransmit all or part of the report information.

[0072] In this step, if the reporting resources configured by the base station cannot accommodate all of the contents of Part 2, the lower-priority contents of Part 2 need to be discarded. Alternatively, if the time slot corresponding to the CSI fed back by the UE is a non-uplink time slot, or if the priority of the reported information is below a preset priority threshold (if the priority of the reported information conflicts with other contents with higher priority), the CSI feedback content needs to be discarded. Meanwhile, to improve the flexibility of CSI feedback, the base station may instruct the UE to retransmit previously discarded CSI feedback content.

[0073] In one embodiment, the base station adds a 1-bit retransmission instruction domain to the downlink control information, and sets an indication value of the retransmission instruction domain, a first receiving time slot, an indication value of the modulation and coding scheme domain, and a retransmission time slot parameter, thereby instructing the UE to retransmit the report information corresponding to the target retransmission time slot in the transmission retransmission time slot, where the first receiving time slot is a time slot in which the indication value of the retransmission instruction domain received by the UE is a preset indication value, the retransmission time slot parameter is indicated by the downlink control information DCI, the target retransmission time slot is determined by the indication value of the first receiving time slot and the modulation and coding scheme domain, and the transmission retransmission time slot is determined by the first receiving time slot and the retransmission time slot parameter.

[0074] In one embodiment, the base station adds a 1-bit retransmission instruction domain to the downlink control information, and sets an indication value of the retransmission instruction domain, a first receiving time slot, and a retransmission time slot parameter to instruct the UE to retransmit the report information deleted from the most recent time slot in the transmission retransmission time slot, where the first receiving time slot is the time slot in which the indication value of the retransmission instruction domain received by the UE is a preset indication value, the retransmission time slot parameter is indicated by the downlink control information DCI, and the transmission retransmission time slot is determined by the first receiving time slot and the retransmission time slot parameter, where the most recent time slot is the time slot that is closest in time.

[0075] In one embodiment, the base station adds a 1-bit retransmission instruction domain to the downlink control information, and instructs the UE to retransmit the report information corresponding to the target retransmission timeslot at the transmission retransmission timeslot by setting an instruction value of the retransmission instruction domain, a first receiving timeslot, a time window parameter, and a retransmission timeslot parameter, where the first receiving timeslot is a timeslot where the instruction value of the retransmission instruction domain received by the UE is a preset instruction value, the time window parameter is indicated by an upper layer radio resource control (RRC) signaling configuration or a modulation and coding scheme (MCS) field in the downlink control information (DCI), the retransmission timeslot parameter is indicated by the downlink control information (DCI), the target retransmission timeslot is determined by the time window parameter, and the transmission retransmission timeslot is determined by the first receiving timeslot and the retransmission timeslot parameter.

[0076] The base station may add a retransmission instruction domain of two or more bits, and the present application is not limited thereto.

[0077] 6 is a flowchart of a data transmission method according to an embodiment of the present application, which may be applied to, but is not limited to, the terminal device 330 in the implementation environment shown in FIG. 3. The data transmission method may include, but is not limited to, steps S4000, S5000, and S6000.

[0078] Step S4000: Determine a target reception method based on the resource setting information of the access node.

[0079] In this step, the terminal determines a target reception method based on the resource setting information of the access node. The access node defines a resource setting type specialized for data collection, and the parameter setting in this resource setting includes at least one of quasi-co-location QCL setting information of the reception method, periodicity information and time slot offset information, duration information, and data type information that needs to be reported.

[0080] In one embodiment, if the parameter setting in the resource setting includes quasi-co-location QCL setting information of the receiving scheme, the base station instructs the terminal to determine one or more receiving schemes as target receiving schemes according to the quasi-co-location QCL setting information of the receiving scheme. The target receiving scheme here can be understood as a target receiving beam, that is, the UE can determine which receiving beam to adopt to receive and measure L1-RSRP on the allocated resource according to the quasi-co-location QCL setting information in the parameter setting, and these selected beams are called target receiving beams.

[0081] In one embodiment, if the base station does not set this parameter for the UE, it means that the UE sequentially employs all receive beams to receive and measure L1-RSRP on the assigned resources, or it means that the UE independently determines which receive beam to employ to receive and measure L1-RSRP on the assigned resources.

[0082] In one embodiment, when the base station configures the QCL information of the receive beam for the UE, the UE indicates that it will receive and measure L1-RSRP on the assigned resource based on one or more fixed receive beams, and these multiple fixed receive beams form a group of receive beams. Specifically, the reference signal (referenceSignal) of the QCL-info in the transmission configuration indication state (TCI state) is configured as the target channel state information reference signal (CSI-RS). The UE acquires the target channel state information reference signal of the quasi-co-located QCL-info information in the transmission configuration indication state (TCI state), and determines the reception scheme used to most recently receive the target channel state information reference signal as the target reception scheme. Note that most recently received indicates the closest in time.

[0083] In this step, the base station in the embodiment of the present application defines parameters in resource setting specific to data collection, thereby instructing the UE to receive and measure using a specific beam among beams in a portion of time or a portion of space. Compared with the full scanning method in the related art, this method can significantly reduce the overhead of beam training while achieving ideal beamforming. Meanwhile, in some application scenarios, if a beam prediction model trained by machine learning is available, it is possible to obtain all beam information by using beams in a portion of time or a portion of space as model input to predict beams in other times or other space regions.

[0084] Step S5000: Receive by target receiving method and obtain report information by measurement.

[0085] In this step, the data type information that needs to be reported includes at least one of the following: Layer 1 reference signal received power L1-RSRP, channel state information resource indication CRI, other auxiliary information, such as received beam related information, timestamp information, UE location information, etc.

[0086] In one embodiment, if the data type information that needs to be reported includes Layer 1 reference signal received power L1-RSRP, the access node and the UE predefine the quantization precision of the Layer 1 reference signal received power L1-RSRP.

[0087] In one embodiment, if the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is greater than or equal to a first threshold, the UE quantizes the Layer 1 reference signal received power L1-RSRP with a first quantization precision; if the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is less than the first threshold, the UE quantizes the Layer 1 reference signal received power L1-RSRP with a second quantization precision; if the modulation and coding scheme MCS index value is less than the second threshold, the UE quantizes the Layer 1 reference signal received power L1-RSRP with a third quantization precision, where the second quantization precision is higher than the first quantization precision and the third quantization precision is higher than the first quantization precision.

[0088] The quantization accuracy of the reference signal received power affects the reporting overhead of the UE, with higher accuracy resulting in higher overhead and lower accuracy resulting in lower overhead. Therefore, depending on the application scenario, the quantization accuracy of the reference signal received power can be adaptively adjusted to reduce reporting overhead while ensuring quantization accuracy.

[0089] In one embodiment, when the UE is located at a cell center or when the RSRP and / or SINR are relatively high, the quantization can be performed using the original quantization accuracy of the related art, i.e., there is no need to improve the quantization accuracy. For example, when the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR are equal to or greater than a first threshold, the base station and the UE predefine that the maximum reference signal received power RSRP uses 7-bit quantization accuracy and the differential reference signal received power RSRP uses 4-bit quantization accuracy.

[0090] In one embodiment, when the UE is located at a cell edge or when the RSRP and / or SINR are relatively low, the quantization precision can be improved, i.e., the number of quantization bits can be increased. For example, when the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR are less than a first threshold, the base station and the UE predefine that the maximum reference signal received power RSRP uses 8-bit quantization precision and the differential reference signal received power RSRP uses 5-bit quantization precision.

[0091] In one embodiment, if the modulation and coding scheme MCS index value is less than the second threshold, the quantization precision can be improved, i.e., the number of quantization bits can be increased; otherwise, quantization can be performed using the original quantization precision of the related art.

[0092] The specific number of bits of the quantization precision can be flexibly adjusted according to actual needs, and is not limited to the quantization precision provided in the above embodiment.

[0093] Step S6000: Send report information to the access node.

[0094] In some embodiments in step S1000, a method for saving reporting overhead by adjusting quantization precision is described, but in the UE reporting process, reporting priorities can be predefined to define which data is reported preferentially.

[0095] In one embodiment, when the reporting information includes L1-RSRP and / or CRI, the base station and the UE predefine data reporting priorities for the L1-RSRP and / or CRI.

[0096] Examples of L1-RSRP and / or CRI information reporting for spatial domain beams are provided below.

[0097] In one embodiment, the UE reports L1-RSRP and / or CRI separately in a first part (Part 1) and a second part (Part 2), and the reporting priority of Part 1 is predefined to be higher than that of Part 2. Regarding the specific content stored in Part 1 and Part 2, specific L1-RSRP and / or CRI content to be reported can be assigned based on the priority of CSI information, in accordance with the principle of backward compatibility. Because the reporting priority of Part 1 is higher than that of Part 2, when reporting information, the content of Part 1 is reported first. If the reporting overhead is sufficient, the content of Part 2 is reported. If the reporting overhead is insufficient to store all of the content of Part 2, only part of the content of Part 2 can be reported first according to the reporting priority of the content of Part 2. In some embodiments, the content of Part 1 and Part 2 is assigned by allocating reporting information to Set A and Set B, assuming that Set B is a subset of Set A, and configuring the contents of Set A and Set B.

[0098] In one embodiment, the information in the first part includes up to L L1-RSRPs and / or CRIs measured on the resource and an indication of the overhead occupied by the second part, where L is an integer greater than or equal to 1. A preset threshold may determine which L1-RSRPs and / or CRIs are reported with priority, i.e., L1-RSRPs and / or CRIs greater than the preset threshold are reported with priority as the contents of the first part.

[0099] In one embodiment, the second part of the information includes some or all of the remaining L1-RSRPs and / or CRIs other than the maximum L L1-RSRPs and / or CRIs measured on the resource, where L is an integer greater than or equal to 1, i.e., the second part of the information is other information excluding the first part of the information, some or all of which is reported only after the reporting of the first part is completed.

[0100] In one embodiment, when only part of the information in the second part can be reported, the remaining L1-RSRP and / or CRI are divided into K groups in descending order, and the first M groups are preferentially stored in the second part, where K is an integer greater than or equal to 1 and M is an integer greater than or equal to 1 and less than K. That is, the information in the second part also has an internal priority, and when overhead is insufficient, information with a higher priority is selected and reported. Note that grouping in descending order means that the L1-RSRP and / or CRI values ​​are first sorted in descending order, and then the L1-RSRP and / or CRI are divided into multiple groups according to a preset group size, and the group with the highest priority is reported preferentially.

[0101] Examples of predicted L1-RSRP and / or CRI information reporting for time domain beams are provided below.

[0102] In one embodiment, if a UE report only reports channel state information CSI on one time slot, only the timestamp information corresponding to that time slot needs to be added, similar to the reporting method of L1-RSRP and / or CRI information of a spatial domain beam.

[0103] In one embodiment, as shown in Figure 5, when one report from a UE includes channel state information (CSI) corresponding to multiple time slots, the first part of the information includes up to L L1-RSRPs and / or CRIs measured on resources in the first time slot, corresponding timestamp information, and information indicating the overhead occupied by the second part, where L is an integer greater than or equal to 1. The second part of the information includes the remaining L1-RSRPs and / or CRIs other than the information in the first part.

[0104] In addition, the information in the second part also has a reporting order priority, which is mainly determined according to the L1-RSRP and / or CRI size and the priority between time slots, and a specific example will be provided below to explain this.

[0105] In one embodiment, the priority between time slots is higher than the priority of L1-RSRP and / or CRI size, i.e., when storing L1-RSRP and / or CRI content, the priority between different time slots is considered first, and then the priority due to differences in L1-RSRP and / or CRI size is considered.

[0106] In one embodiment, the priority of L1-RSRP and / or CRI size is higher than the priority between time slots, i.e., when storing L1-RSRP and / or CRI content, the priority due to differences in L1-RSRP and / or CRI size is considered first, and then the priority between different time slots is considered.

[0107] In the above embodiment, the reporting priority of the reporting information is predefined, which can effectively save the reporting overhead and ensure that important information is reported preferentially with limited overhead.

[0108] 7 is a flowchart of receiving a data retransmission instruction and performing data retransmission according to an embodiment of the present application. As shown in FIG. 7, the embodiment of the present application further includes step S7000 and step S8000.

[0109] Step S7000: A retransmission instruction transmitted by an access node when a preset retransmission condition is satisfied is received.

[0110] In this step, if the reporting resources configured by the base station cannot accommodate all of the contents of Part 2, the lower-priority contents of Part 2 must be discarded. Alternatively, if the time slot corresponding to the CSI fed back by the UE is a non-uplink time slot, or if the priority of the reported information is below a preset priority threshold (if the priority of the reported information conflicts with other contents with higher priority), the CSI feedback content must be discarded. On the other hand, to improve the flexibility of CSI feedback, the base station may instruct the UE to retransmit previously discarded CSI feedback content. The terminal receives the retransmission instruction sent by the access node and determines the retransmission content and retransmission time.

[0111] In this step, if the reporting resources configured by the base station cannot accommodate all of the contents of Part 2, the lower-priority contents of Part 2 need to be discarded. Alternatively, if the time slot corresponding to the CSI fed back by the UE is a non-uplink time slot, or if the priority of the reported information is below a preset priority threshold (if the priority of the reported information conflicts with other contents with higher priority), the CSI feedback content needs to be discarded. Meanwhile, to improve the flexibility of CSI feedback, the base station may instruct the UE to retransmit previously discarded CSI feedback content.

[0112] In one embodiment, the base station adds a 1-bit retransmission instruction domain to the downlink control information, and sets an indication value of the retransmission instruction domain, a first receiving time slot, an indication value of the modulation and coding scheme domain, and a retransmission time slot parameter, thereby instructing the UE to retransmit the report information corresponding to the target retransmission time slot in the transmission retransmission time slot, where the first receiving time slot is a time slot in which the indication value of the retransmission instruction domain received by the UE is a preset indication value, the retransmission time slot parameter is indicated by the downlink control information DCI, the target retransmission time slot is determined by the indication value of the first receiving time slot and the modulation and coding scheme domain, and the transmission retransmission time slot is determined by the first receiving time slot and the retransmission time slot parameter.

[0113] In one embodiment, the base station adds a 1-bit retransmission instruction domain to the downlink control information, and sets an indication value of the retransmission instruction domain, a first receiving time slot, and a retransmission time slot parameter to instruct the UE to retransmit the report information deleted from the most recent time slot in the transmission retransmission time slot, where the first receiving time slot is the time slot in which the indication value of the retransmission instruction domain received by the UE is a preset indication value, the retransmission time slot parameter is indicated by the downlink control information DCI, and the transmission retransmission time slot is determined by the first receiving time slot and the retransmission time slot parameter, where the most recent time slot is the time slot that is closest in time.

[0114] In one embodiment, the base station adds a 1-bit retransmission instruction domain to the downlink control information, and instructs the UE to retransmit the report information corresponding to the target retransmission timeslot at the transmission retransmission timeslot by setting an instruction value of the retransmission instruction domain, a first receiving timeslot, a time window parameter, and a retransmission timeslot parameter, where the first receiving timeslot is a timeslot where the instruction value of the retransmission instruction domain received by the UE is a preset instruction value, the time window parameter is indicated by an upper layer radio resource control (RRC) signaling configuration or a modulation and coding scheme (MCS) field in the downlink control information (DCI), the retransmission timeslot parameter is indicated by the downlink control information (DCI), the target retransmission timeslot is determined by the time window parameter, and the transmission retransmission timeslot is determined by the first receiving timeslot and the retransmission timeslot parameter.

[0115] Step S8000: In accordance with the retransmission instruction, all or part of the report information is retransmitted.

[0116] In the following, a specific example will be given to more clearly explain the operating principles of the above related embodiments. Example 1:

[0117] In this example, steps S101 to S103 are included.

[0118] Step S101: The base station configures a measurement resource for the UE.

[0119] The base station defines a resource setting type specific to data collection, and the parameter settings of this resource setting include periodicity and time slot offset, duration, data type to be reported (RSRP / SINR / CIR, CRI; including other auxiliary information such as receive beam related information, timestamp, UE location, etc.), and QCL setting information of the receive beam. Regarding the QCL setting information of the receiving beam, if the base station does not set this parameter for the UE, it means that the UE will sequentially adopt all receiving beams to receive and measure L1-RSRP on the assigned resources, or it means that the UE will independently determine which receiving beam to adopt to receive and measure L1-RSRP on the assigned resources.

[0120] When the base station configures the QCL information of the receive beams for the UE, it instructs the UE to receive and measure L1-RSRP on the assigned resources based on one / one set of fixed receive beams. For example, if the reference signal of the QCL-info in TCI state 1 is set to CSI-RS 1 and the reference signal of the QCL-info in TCI state 2 is set to CSI-RS 2, the base station instructs the UE to adopt receive beam 1, which is the same receive beam recently used to receive CSI-RS 1, and to adopt receive beam 2, which is the same receive beam recently used to receive CSI-RS 2, when measuring L1-RSRP on the assigned data collection resources.

[0121] Step S102: The UE measures the L1-RSRP on the allocated resource.

[0122] The UE measures the L1-RSRP on the allocated resources based on the resource configuration.

[0123] Step S103: The UE reports the L1-RSRP and / or CRI to the base station.

[0124] To reduce reporting overhead, the UE may measure L1-RSRP on the assigned resources based on only one / one set of receive beams and report data including L1-RSRP and / or CRI. Example 2:

[0125] In this example, different L1-RSRP quantization precisions may be used to meet the needs of different application scenarios, since the L1-RSRP reporting overhead needs to be within a certain range.

[0126] For example, for a cell center or a user with a relatively high SINR, or for a user whose RSRP or SINR is equal to or greater than a certain threshold P, the quantization accuracy is not improved, and only the conventional quantization accuracy is adopted, i.e., the maximum RSRP is quantized with 7 bits, and the other differential RSRPs are quantized with 4 bits.

[0127] For example, for cell edge or relatively low SINR users, or when a user's RSRP or SINR is below a certain threshold P, both the maximum RSRP and differential RSRP increase the number of quantization bits, for example, 8 bits and 5 bits, respectively.

[0128] For example, if the MCS is bound to the user's MCS and the MCS is less than a certain threshold Q, the number of quantization bits is increased for both the maximum RSRP and the differential RSRP; otherwise, the conventional number of quantization bits in the R17 version protocol is adopted, i.e., 7 bits for the maximum RSRP and 4 bits for the other differential RSRPs. Example 3:

[0129] In this example, to save reporting overhead, the reporting priority of spatial domain beams may be predefined. Specifically, L1-RSRP may be reported separately in Part 1 and Part 2. Based on the principle of backward compatibility, the CSI content to be reported may be assigned as follows, taking into account the priority of CSI information (assuming that Set B is a subset of Set A and is located at the same time):

[0130] In this example, Part 1 stores up to four CRI / L1-RSRPs in Set B (referred to as SetB_Max4), and Part 2 stores overhead indication information. Part 2 stores (Set A-SetB_Max4) CRI / L1-RSRPs. The (Set A-SetB_Max4) CRI / L1-RSRPs are divided into K groups, and the priority of the contents is stored in the following order: largest CRI / L1-RSRP group > second largest CRI / L1-RSRP group > ... > smallest CRI / L1-RSRP group. Example 4:

[0131] In this example, to save reporting overhead, the reporting priority of the time domain beam may be defined in advance. Specifically, L1-RSRP can be divided into Part 1 and Part 2 for reporting. When one report reports only CSI for one time, Part 1 stores up to four CRI / L1-RSRPs in Set B for one time (referred to as SetB_Max4), corresponding timestamp information, and overhead indication information for Part 2. Part 2 stores (Set A-SetB_Max4) CRI / L1-RSRPs. The (Set A-SetB_Max4) CRI / L1-RSRPs are divided into K groups, and the priority of the contents is stored in the following order: largest CRI / L1-RSRP group > second largest CRI / L1-RSRP group > ... > smallest CRI / L1-RSRP group. Example 5:

[0132] In this example, to save reporting overhead, the reporting priority of the time domain beam may be defined in advance. Specifically, the L1-RSRP can be divided into Part 1 and Part 2 for reporting. As shown in FIG. 8, if one report can report CSI for multiple times, Part 1 stores up to four CRI / L1-RSRPs in Set B in Slot 1 (referred to as SetB_Max4), corresponding timestamp information, and indication information for Part 2 overhead. Part 2 stores the CRI / L1-RSRPs in other time slots and stores the priority of the contents (priority between time slots is higher than the priority of the L1-RSRP size within a time slot). The specific storage order of Part 2 is as follows: > Maximum CRI / L1-RSRP group in Slot 5 Set A > Maximum CRI / L1-RSRP group in Slot 3 Set B > Maximum CRI / L1-RSRP group in Slot 7 Set A > Maximum CRI / L1-RSRP group in Slot 2 Set B > Maximum CRI / L1-RSRP group in Slot 6 Set A > Maximum CRI / L1-RSRP group in Slot 4 Set B > Maximum CRI / L1-RSRP group in Slot 8 Set A > Second largest CRI / L1-RSRP group in slot 5 Example 6:

[0133] This example differs from the sixth embodiment in that the priority of the L1-RSRP size within a time slot is higher than the priority between slots, and the specific storage order of Part 2 is as follows: > Maximum CRI / L1-RSRP group in Slot 5 Set A > Second largest CRI / L1-RSRP group in Slot 5 Set A ... > Minimum CRI / L1-RSRP group in Slot 5 Set A > Second largest CRI / L1-RSRP group in Slot 2 Set B ... > Minimum CRI / L1-RSRP group in Slot 2 Set B ... > Second largest CRI / L1-RSRP group in Slot 8 Set A ... > Minimum CRI / L1-RSRP group in Slot 8 Set A Example 7:

[0134] A 1-bit L1-RSRP / RSRP / CRI retransmission instruction domain is newly added to DCI formats 1-1 and 1-2. If the UE receives that the value of this instruction domain in the DCI is 1 in time slot n, the UE retransmits the deleted CSI feedback content in time slot m, where m = nf, the value of f is indicated by the MCS field in this DCI, the time slot for the transmission retransmission CSI is n + k, and the value of k is indicated by the DCI. Example 8:

[0135] A 1-bit L1-RSRP / RSRP / CRI retransmission indication domain is newly added to DCI formats 1-1 and 1-2. When the UE receives a DCI with a value of 1 for this indication domain in timeslot n, the UE retransmits the CSI feedback content deleted in the most recent timeslot, or retransmits all deleted CSI feedback content within a time window of size g configured by higher layer RRC signaling or indicated by the MCS field in the DCI. Here, the start and end timeslots of the time window are ng and n, respectively, and the number of timeslots for CSI retransmission is n+k, where the value of k is indicated by the DCI.

[0136] Furthermore, as shown in FIG. 9 , an embodiment of the present application further discloses an access node 400 including at least one processor 410 and at least one memory 420 for storing at least one program, and which, when the at least one program is executed by the at least one processor 410, executes the data transmission method described in the above-mentioned steps S1000 to S3000.

[0137] Furthermore, as shown in FIG. 10, one embodiment of the present application further discloses a terminal device 500 including at least one processor 510 and at least one memory 520 for storing at least one program, and which, when the at least one program is executed by the at least one processor 510, executes the data transmission method described in the above-mentioned steps S4000 to S8000.

[0138] Furthermore, an embodiment of the present application further discloses a computer-readable storage medium storing computer-executable instructions for performing the data transmission method according to any of the above embodiments.

[0139] Furthermore, one embodiment of the present application discloses a computer program product including a computer program or computer instructions, the computer program or computer instructions being stored in a computer-readable storage medium, a processor of a computer device reading the computer program or computer instructions from the computer-readable storage medium, and the processor executing the computer program or computer instructions to cause the computer device to perform the data transmission method.

[0140] The system architecture and application scenarios described in the embodiments of the present application are intended to more clearly explain the technical solutions of the embodiments of the present application, but do not limit the technical solutions of the embodiments of the present application. It is understood by those skilled in the art that the technical solutions of the embodiments of the present application can also be applied to similar technical problems with the evolution of system architecture and the emergence of new application scenarios.

[0141] Those skilled in the art can understand that all or part of the steps of the methods, systems, and functional modules / units of the apparatuses disclosed above can be implemented as software, firmware, hardware, and any suitable combination thereof.

[0142] In hardware embodiments, the division between functional modules / units described above does not necessarily correspond to the division of physical components. For example, one physical component may have multiple functions, and one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processor, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable, and non-removable media implemented in any method or technology for storing information (e.g., computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and that can be accessed by a computer. Additionally, it is well known to those skilled in the art that communication media typically include computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism and can include any information delivery media.

[0143] As used herein, terms such as "component," "module," and "system" are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable file, a thread of execution, a program, or a computer. By way of illustration, both an application running on a computing device and the computing device may be a component. One or more components may reside within a process or thread of execution, and components may be located on one computer or distributed among two or more computers. Furthermore, these components may execute from various computer-readable media having various data structures stored thereon. Components may communicate, for example, via local or remote processes, according to signals carrying one or more data packets (e.g., data from two components interacting with other components across a local system, a distributed system, or a network, e.g., the Internet interacting with other systems via signals).

Claims

1. A data transmission method applied to an access node, comprising: configuring resources for a terminal, instructing the terminal to determine a target reception scheme according to the resources, and causing the terminal to perform measurements according to the target reception scheme to obtain report information; receiving report information transmitted by the terminal.

2. The resource is: Quasi-collocation QCL setting information of the receiving method; period information and time slot offset information; duration information, and 2. The data transmission method of claim 1, further comprising at least one parameter: data type information that needs to be reported.

3. When the resource includes quasi-co-location QCL configuration information of the reception method, the step of instructing the terminal to determine a target reception method according to the resource includes: The data transmission method according to claim 2 , further comprising the step of instructing the terminal to determine one or more receiving schemes as the target receiving schemes according to quasi-co-location QCL setting information of the receiving schemes.

4. The step of configuring resources for a terminal and instructing the terminal to determine a target reception scheme according to the resources includes: setting a reference signal referenceSignal of the quasi-collocation QCL-info information in the transmission configuration indication state TCI state as a target channel state information reference signal; and instructing the terminal to set the target receiving scheme to a receiving scheme recently used to receive the target channel state information reference signal.

5. The data type information that needs to be reported is: Layer 1 reference signal received power L1-RSRP, and 3. The data transmission method of claim 2, further comprising at least one of a channel state information resource indication CRI.

6. 6. The data transmission method according to claim 5, wherein, when the data type information that needs to be reported includes the Layer 1 reference signal received power L1-RSRP, the access node and the terminal predefine a quantization precision of the Layer 1 reference signal received power L1-RSRP.

7. The step of the access node and the terminal predefining a quantization accuracy of the Layer 1 reference signal received power L1-RSRP includes: When the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is equal to or greater than a first threshold, the terminal quantizes the layer 1 reference signal received power L1-RSRP with a first quantization resolution; If the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is less than a first threshold, the terminal quantizes the layer 1 reference signal received power L1-RSRP with a second quantization resolution; If the modulation and coding scheme (MCS) index value is less than the second threshold, the terminal quantizes the Layer 1 reference signal received power (L1-RSRP) with a third quantization precision; The data transmission method according to claim 6 , wherein the second quantization precision is higher than the first quantization precision, and the third quantization precision is higher than the first quantization precision.

8. 2. The data transmission method according to claim 1, wherein, when the report information includes a Layer 1 reference signal received power L1-RSRP and / or a channel state information resource indication CRI, the access node and the terminal predefine a data report priority of the Layer 1 reference signal received power L1-RSRP and / or a CRI.

9. The step of the access node and the terminal predefining data reporting priorities of the L1-RSRP and / or CRI includes: The data transmission method according to claim 8, further comprising a step of defining in advance that the terminal reports the L1-RSRP and / or CRI divided into a first part and a second part, wherein the reporting priority of the first part is higher than the reporting priority of the second part.

10. 10. The data transmission method of claim 9, wherein the information of the first part includes up to L L1-RSRPs and / or CRIs measured on the resource, and an indication of the overhead occupied by the second part, where L is an integer greater than or equal to 1.

11. The data transmission method of claim 9, wherein the second part of information includes some or all of the remaining L1-RSRPs and / or CRIs other than the maximum L L1-RSRPs and / or CRIs measured on the resource, where L is an integer greater than or equal to 1.

12. 12. The data transmission method of claim 11, wherein, when the information in the second part includes a portion of the remaining L1-RSRP and / or CRI, the remaining L1-RSRP and / or CRI are divided into K groups in descending order of size, and the first M groups are preferentially stored in the second part, where K is an integer greater than or equal to 1, M is an integer greater than or equal to 1, and M is less than K.

13. 10. The data transmission method of claim 9, wherein, when a single report includes report information corresponding to multiple target time slots, the first part of the information includes up to L L1-RSRPs and / or CRIs measured on the resources in the first target time slot, corresponding timestamp information, and an indication of overhead occupied by the second part, where L is an integer greater than or equal to 1.

14. 10. The data transmission method of claim 9, wherein, when a single report includes report information corresponding to multiple target time slots, the second part of the information includes remaining L1-RSRPs and / or CRIs other than the maximum L L1-RSRPs measured on the resources in the remaining target time slots other than the first target time slot, and a priority between time slots is higher than a priority of an L1-RSRP size within a time slot, or a priority of an L1-RSRP size within a time slot is higher than a priority between time slots.

15. The data transmission method according to any one of claims 9 to 14, further comprising the step of instructing the terminal to retransmit all or part of the report information when a preset retransmission condition is met.

16. The preset retransmission condition is: the reporting resource of the second part cannot store all the information of the second part; The time slot in which the terminal transmits the report information is a non-uplink time slot; and The data transmission method according to claim 15 , wherein the priority of the report information includes at least one of being lower than a preset priority threshold.

17. A data transmission method applied to a terminal, comprising: determining a target reception scheme based on resource configuration information of the access node; receiving through the target receiving method and obtaining report information through measurement; transmitting the report information to the access node.

18. The resource setting information is Quasi-collocation QCL setting information of the receiving method; period information and time slot offset information; duration information, and 20. The data transmission method of claim 17, including at least one of the data type information that needs to be reported.

19. When the resource configuration information includes quasi-co-location QCL configuration information of the receiving mode, the step of determining a target receiving mode based on the resource configuration information of the access node includes: The data transmission method according to claim 17, comprising determining one or more receiving schemes as the target receiving schemes based on quasi-collocation QCL setting information of the receiving schemes.

20. The step of determining a target reception mode based on resource configuration information of an access node includes: obtaining a target channel state information reference signal of quasi-colocation QCL-info information in a transmission configuration indication state TCI state; and determining the target receiving scheme as the receiving scheme most recently used to receive the target channel state information reference signal.

21. The data type information that needs to be reported is: Layer 1 reference signal received power L1-RSRP, and 20. The data transmission method of claim 18, comprising at least one of a channel state information resource indication CRI.

22. 22. The data transmission method according to claim 21, wherein, when the data type information that needs to be reported includes the Layer 1 reference signal received power L1-RSRP, the access node and the terminal predefine a quantization precision of the Layer 1 reference signal received power L1-RSRP.

23. The step of the access node and the terminal predefining a quantization accuracy of the Layer 1 reference signal received power L1-RSRP comprises: When the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is equal to or greater than a first threshold, the terminal quantizes the layer 1 reference signal received power L1-RSRP with a first quantization resolution; If the reference signal received power RSRP and / or the signal-to-interference-plus-noise ratio SINR is less than a first threshold, the terminal quantizes the layer 1 reference signal received power L1-RSRP with a second quantization resolution; If the modulation and coding scheme (MCS) index value is less than the second threshold, the terminal quantizes the Layer 1 reference signal received power (L1-RSRP) with a third quantization precision; 23. The data transmission method according to claim 22, wherein the second quantization precision is higher than the first quantization precision, and the third quantization precision is higher than the first quantization precision.

24. 18. The data transmission method of claim 17, wherein, when the report information includes a Layer 1 reference signal received power L1-RSRP and / or a channel state information resource indication CRI, the access node and the terminal predefine a data report priority of the Layer 1 reference signal received power L1-RSRP.

25. The step of the access node and the terminal predefining the data reporting priority of the L1-RSRP includes: The data transmission method according to claim 24, further comprising a step of defining in advance that the terminal reports the L1-RSRP divided into a first part and a second part, wherein the priority of the first part is higher than the priority of the second part.

26. 26. The data transmission method of claim 25, wherein the information of the first part includes up to L L1-RSRPs and / or CRIs measured on the resource, and an indication of the overhead occupied by the second part, where L is an integer greater than or equal to 1.

27. The data transmission method of claim 25, wherein the second part of information includes some or all of the remaining L1-RSRPs and / or CRIs other than the maximum L L1-RSRPs measured on the resource, where L is an integer greater than or equal to 1.

28. 28. The data transmission method of claim 27, wherein, when the information in the second part includes a portion of the remaining L1-RSRP and / or CRI, the remaining L1-RSRP and / or CRI are divided into K groups in descending order of size, and the first M groups are preferentially stored in the second part, where K is an integer greater than or equal to 1, M is an integer greater than or equal to 1, and M is less than K.

29. 26. The data transmission method of claim 25, wherein, when a single report includes report information corresponding to multiple target time slots, the first part of the information includes up to L L1-RSRPs and / or CRIs measured on the resources in the first target time slot, corresponding timestamp information, and an indication of overhead occupied by the second part, where L is an integer greater than or equal to 1.

30. 26. The data transmission method of claim 25, wherein, when a single report includes report information corresponding to multiple target time slots, the second part of information includes remaining L1-RSRPs and / or CRIs other than the maximum L L1-RSRPs measured on the resources in the remaining target time slots other than the first target time slot, and a priority between time slots is higher than a priority of an L1-RSRP size within a time slot, or a priority of an L1-RSRP size within a time slot is higher than a priority between time slots.

31. receiving a retransmission instruction sent by the access node when a preset retransmission condition is met; The data transmission method according to any one of claims 25 to 30, further comprising the step of retransmitting all or part of the report information in accordance with the retransmission instruction.

32. The preset retransmission condition is: the reporting resource of the second part cannot store all the information of the second part; The time slot in which the terminal transmits the report information is a non-uplink time slot; and 32. The data transmission method according to claim 31, wherein the priority of the report information includes at least one of being less than a preset priority threshold.

33. A data transmission method applied to a communication system including an access node and a terminal, comprising: the access node configuring resources for the terminal; the terminal determines a target reception scheme based on resource configuration information of the access node; The terminal receives the signal through the target reception method and obtains the report information through measurement; the terminal transmitting the reporting information to the access node; and receiving, by the access node, report information transmitted by the terminal.

34. an access node, at least one processor; at least one memory for storing at least one program; An access node, wherein at least one said program, when executed by at least one said processor, performs the data transmission method according to any one of claims 1 to 16.

35. A terminal, at least one processor; at least one memory for storing at least one program; A terminal which, when at least one said program is executed by at least one said processor, performs the data transmission method according to any one of claims 17 to 32.

36. A computer-readable storage medium having stored thereon a processor-executable program which, when executed by a processor, performs the data transmission method of any one of claims 1 to 33.

37. 1. A computer program product comprising: A computer program product comprising a computer program or computer instructions, the computer program or the computer instructions being stored in a computer-readable storage medium, the computer program or the computer instructions being read by a processor of a computer device, the processor executing the computer program or the computer instructions to cause the computer device to perform the data transmission method of any one of claims 1 to 33.

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