Signaling transmission method, signaling reception method, communication node, and storage medium

Abstract

The present application discloses a signaling transmission method, a signaling reception method, a communication node, and a storage medium, the signaling transmission method including: transmitting first signaling to a second communication node, the first signaling being used to instruct the second communication node to report channel state information (CSI) information and timestamp information at one or more timestamps, and receiving the reported CSI information and timestamp information from the second communication node.

Description

[Technical field]

[0001] The present application relates to the technical field of communications, for example, to a signaling transmission method, a signaling reception method, a communication node, and a storage medium. [Background technology]

[0002] With the rapid development of wireless communication technology, the millimeter wave frequency band is gradually becoming an important frequency band for future wireless communication systems. In order to overcome the severe propagation conditions of the millimeter wave frequency band, it is usually necessary to perform beamforming on it to concentrate the signal energy in a small angular space to form a beamforming beam with a larger gain. Beam management is to establish and maintain a suitable beam pair to realize the alignment of the beam direction of the transmitting side and the receiving side to obtain optimal transmission performance. Beam management is very important for millimeter wave communication systems, and includes beam scanning, beam measurement, beam reporting and beam instruction. However, the beam training scheme needs to scan all the transmitting beams and receiving beams in the pre-defined analog beam codebook at the limit, which may cause excessive training overhead, measurement power consumption and processing delay. Summary of the Invention

[0003] An embodiment of the present application is a signaling transmission method applied to a first communication node, comprising: sending first signaling to a second communication node, the first signaling being used to instruct the second communication node to report channel state information (CSI) and timestamp information at one or more timestamps; and receiving the reported CSI and timestamp information from the second communication node. A method for transmitting signaling is provided.

[0004] An embodiment of the present application is a method for receiving signaling applied to a second communication node, comprising: receiving first signaling transmitted from a first communication node, the first signaling instructing a second communication node to report channel state information (CSI) and timestamp information at one or more timestamps; and reporting the CSI and timestamp information to the first communication node. A method for receiving signaling is provided.

[0005] An embodiment of the present application includes a processor that is used to realize the above-mentioned signaling transmission method or signaling reception method when a computer program is executed; Provide a communication node.

[0006] In the embodiment of the present application, a computer program is stored that, when executed by a processor, realizes the above-mentioned signaling transmission method or the signaling reception method. A computer readable storage medium is further provided. [Brief description of the drawings]

[0007] [Figure 1] Schematic diagram of the P-2 beam management process. [Diagram 2] Schematic diagram of the P-3 beam management process. [Diagram 3] FIG. 2 is a networking schematic diagram of a wireless communication system according to one embodiment. [Figure 4] 1 is a flow diagram of a signaling transmission method according to one embodiment. [Diagram 5] 1 is a flow diagram of a signaling receiving method according to one embodiment. [Figure 6] FIG. 13 is a schematic diagram of a beam prediction according to an embodiment. [Figure 7] FIG. 13 is another schematic diagram of a beam prediction according to an embodiment. [Figure 8] FIG. 2 is a schematic diagram of an activation period and a deactivation period according to one embodiment. [Figure 9] FIG. 13 is a schematic diagram of another activation period and deactivation period according to an embodiment. [Figure 10] FIG. 2 is a schematic diagram of a periodic CSI-RS resource according to one embodiment. [Figure 11] FIG. 1 is a schematic diagram of CSI-RS resources in the case of spatial domain beam prediction according to one embodiment. [Figure 12] FIG. 13 is a schematic diagram of a CSI-RS resource subset in the case of time-domain beam prediction according to one embodiment. [Figure 13] FIG. 1 is a schematic diagram of a CSI-RS resource subset in which spatial domain beam prediction and time domain beam prediction are combined according to one embodiment. [Figure 14] FIG. 2 is a structural schematic diagram of a signaling transmission device according to an embodiment; [Figure 15] 1 is a structural schematic diagram of a signaling receiving device according to an embodiment of the present invention; [Figure 16] FIG. 2 is a structural schematic diagram of a base station according to an embodiment; [Figure 17] FIG. 2 is a structural schematic diagram of a UE according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The specific embodiments described herein are only used to interpret the present application, and it should be understood that the embodiments of the present application will be described in detail below with reference to the drawings.

[0009] With the rapid development of wireless communication technology, low frequency band resources are becoming more and more strained, and the millimeter wave frequency band, which has more spectrum resources and bandwidth, is becoming an important frequency band for future wireless communication systems. However, the millimeter wave frequency band has a short wavelength, and its propagation conditions are much tougher than the conventional frequency band below 6 GHz, and it has problems such as high path loss and sensitivity to blockage. Therefore, it is usually necessary to perform beamforming on the millimeter wave signal to concentrate the signal energy in a small angular space to form a beamforming beam with a larger gain. Beam management is to realize the alignment of the beam direction of the transmitter and receiver by establishing and maintaining one suitable beam pair, and obtain the optimal transmission performance. Beam management is very important for millimeter wave communication systems, and includes beam scanning, beam measurement, beam reporting and beam instruction.

[0010] Beam scanning is a process in which a base station or a user equipment (UE) sequentially uses different analog beams to cover a spatial region. During the beam scanning period, the base station or the UE sequentially transmits beams from the entire codebook or a codebook subset to find a good transmit / receive beam pair for data and control paths. The beam scanning process mainly includes a transmit beam scanning P-2 process and a receive beam scanning P-3 process.

[0011] FIG. 1 shows a schematic diagram of the P-2 beam management process. As shown in FIG. 1, if the base station is a next generation base station (next generation NodeB, gNB), in the P-2 beam management process, a higher layer parameter resource set non-zero power channel state information reference signal resource set (Non-Zero Power-CSI-RS-ResourceSet, NZP-CSI-RS-ResourceSet) is configured in the gNB, each resource set includes multiple channel state information reference signal (CSI-RS) or single sideband (SSB) resources transmitted by adopting different transmission beams, and the UE completes the transmission beam measurement process by receiving and measuring the CSI-RS or SSB resources by adopting a fixed receiving beam. In addition, if the gNB does not provide auxiliary information on the UE side receiving beam, the UE may need to round robin the receiving beam, that is, the CSI-RS resource set for beam management is repeatedly transmitted multiple times, and the UE receives using different receiving beams to realize the receiving beam scanning.

[0012] Figure 2 shows a schematic diagram of the P-3 beam management process. As shown in Figure 1, assuming that the base station is a gNB, in the P-3 beam management process, the gNB configures a higher layer parameter resource set NZP-CSI-RS-ResourceSet, each resource set includes multiple CSI-RS or SSB resources transmitted by adopting the same transmission beam, and the UE adopts different reception beams to receive and measure the CSI-RS or SSB resources to realize reception beam scanning. In addition, the gNB may need to round-robin the transmission beam, that is, to realize transmission beam scanning by configuring multiple CSI-RS resource sets transmitted by adopting different transmission beams.

[0013] Since beams are usually selected from a predefined analog beam codebook, limit scanning of all transmit and receive beams in the codebook is an optimal beam training scheme, but it may cause excessive training overhead, measurement power consumption, and processing delay.

[0014] The signaling transmission and reception method according to the present application can be applied to various wireless communication systems, such as a long term evolution (LTE) system, a fourth generation mobile communication technology (4th-generation, 4G) system, a fifth generation mobile communication technology (5th-generation, 5G) system, a mixed architecture system of LTE and 5G, a 5G New Radio (NR) system, and a new communication system that will appear in future communication developments, such as a sixth generation mobile communication technology (6th-generation, 6G) system. FIG. 3 illustrates a networking schematic diagram of a wireless communication system according to an embodiment. As shown in FIG. 3, the wireless communication system includes a terminal device 110, an access network device 120, and a core network device 130.

[0015] The terminal device 110 is a device with radio transmission and reception capabilities, and may be deployed on land (e.g., indoors or outdoors, handheld, worn or vehicle-mounted, etc.), on the water surface (e.g., on a ship, etc.), or in the air (e.g., on an airplane, balloon, satellite, etc.). Examples of some terminal devices 110 include network-connectable user devices such as UE, mobile phones, mobile stations, tablets, notebook computers, ultra-mobile personal computers (UMPCs), handheld computers, netbooks, and personal digital assistants (PDAs), or virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc., or Internet of Things nodes in the Internet of Things, or in-vehicle communication devices in the Internet of Vehicles, or entertainment and gaming devices and systems, or global positioning system devices, etc. The embodiments of the present application do not limit the technology and device form adopted by the terminal device 110. Moreover, the terminal device 110 may simply be referred to as a terminal.

[0016] The access network device 120 is an access device through which the terminal device 110 wirelessly accesses the wireless communication system, and may be a base station, an evolved base station (eNB or eNodeB) in Long Term Evolution Advanced (LTEA), a transmission reception point (TRP), a base station or gNB in ​​a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a Wireless Fidelity (WiFi) system. The base station may include various macro base stations, micro base stations, home base stations, wireless zoom outs, routers, WIFI devices, or various network side devices such as a primary cell and a secondary cell, and a Location Management Function (LMF) device. It may be a module or unit that completes some functions of the base station, for example, a central unit (CU) or a distributed unit (DU). The embodiments of the present application do not limit the technology and device form adopted by the access network device. The access network device may also simply be referred to as a base station.

[0017] The core network device 130 may include an access and mobility management network element and a session management network element. For example, the terminal device 110 can access the core network through the access network device 120 to realize data transmission.

[0018] In an embodiment of the present application, a method for transmitting and receiving signaling, a communication node and a storage medium that can be activated in the above-mentioned wireless communication system are provided. Compared with the conventional limit scanning method, the present application only needs to transmit or measure beams at some times, and predicts beams at other times, thereby reducing beam training overhead in the time domain, improving beam alignment accuracy, and obtaining desirable beam forming gain and spectral efficiency when the beam training overhead is smaller.

[0019] The following describes a signaling transmission method, a signaling reception method, a communication node, and the technical effects thereof.

[0020] 4 shows a flow diagram of a signaling transmission method according to an embodiment, and as shown in FIG. 4, the method according to the embodiment is applied to a first communication node. In this example, the first communication node (which may be called a first communication node device) may be a base station, and the second communication node (which may be called a second communication node device) may be a terminal device. The method includes the following steps:

[0021] S110, sending a first signaling to a second communication node, the first signaling being used to instruct the second communication node to report channel state information (CSI) and timestamp information at one or more timestamps.

[0022] The solution according to the embodiments of the present application is applied to a beam management method based on artificial intelligence (AI), and relates to a complete beam scanning, measurement and reporting flow.

[0023] The present application realizes beam prediction in the first communication node or the second communication node by transmitting signaling between the first communication node and the second communication node. When the first communication node realizes beam prediction, the CSI information and time stamp information reported from the second communication node are CSI information and time stamp information measured by the second communication node, and when the second communication node realizes beam prediction, the CSI information and time stamp information reported from the second communication node are CSI information and time stamp information predicted by the second communication node.

[0024] In one embodiment, the channel state information (CSI) information includes at least one of Reference Signal Receiving Power (RSRP), a Channel State Information Reference Signal Resource Indicator (CRI), Reference Signal Receiving Quality (RSRQ), a Reference Signal Received Signal, a Signal to Interference plus Noise Ratio (SINR), and a signal-to-noise ratio (SNR).

[0025] In one embodiment, the timestamp information includes at least one of a slot index or number, a subframe index or number, and a symbol index or number.

[0026] Taking the CSI information as an example, in this application, the first signaling is used to indicate that the RSRP reported from the second communication node may be the strongest RSRP at one or more timestamps, or may be the RSRP whose strength at one or more timestamps is within Kth place, where K≧2 and K is an integer.

[0027] In addition, the first signaling is further used to instruct the second communication node to report the RSRP of a fixed CRI or the RSRP of a fixed transmit beam or the RSRP of a fixed transmit / receive beam pair, thereby tracking the movement trajectory of the second communication node and assisting in AI prediction.

[0028] S120, receiving the CSI information and the time stamp information reported from the second communication node.

[0029] In one embodiment, before S120 is executed, the first communication node may further transmit second signaling to the second communication node to instruct the second communication node that the receiving beam of the second communication node does not change, because if the receiving beam of the second communication node changes, this may cause the CSI information and timestamp information reported by the second communication node to become invalid.

[0030] In one embodiment, the commonality of the above embodiments of the present application is that there is no need to transmit CSI-RS resources at some time instants. Therefore, for semi-persistent CSI-RS resources or semi-persistent CSI reports, the first communication node may further transmit third signaling to the second communication node to indicate at least one of an activation period and a deactivation period in one beam prediction process.

[0031] The third signaling can be indicated in any of the following three ways:

[0032] For Scheme 1, when the activation period and the deactivation period are consecutive periods, the third signaling includes at least one of an activation period number M and a deactivation period number N, where N and M are positive integers.

[0033] For method 2, the third signaling adopts a bitmap to indicate that the activation period and the deactivation period are discontinuous periods.

[0034] For scheme 3, if the CSI-RS is aperiodic CSI-RS, the third signaling includes configuring at least one of a bitmap of CSI-RS resources, a repetition number of CSI-RS resources, a bitmap of CSI-RS resource set, and a repetition number of CSI-RS resource set.

[0035] In one embodiment, for time-domain beam prediction, the present application defines a new channel state information reference signal resource set (CSI-RS resource set) type in which attributes of aperiodic, periodic, and semi-persistent CSI-RS resource sets are defined in a resource subset hierarchy.

[0036] The configuration parameters for the resource subset include at least one of a repetition number or repetition factor, an offset, and a bitmap.

[0037] FIG. 5 shows a flow diagram of a signaling receiving method according to an embodiment, and as shown in FIG. 5, the method according to this embodiment is applied to a second communication node. In this example, the first communication node (which may be called a first communication node device) may be a base station, and the second communication node (which may be called a second communication node device) may be a terminal device. The method includes the following steps:

[0038] S210, receiving first signaling sent from a first communication node, the first signaling instructing a second communication node to report channel state information (CSI) and timestamp information at one or more timestamps.

[0039] The solution in the embodiments of the present application is applied to an AI-based beam management method, and relates to a complete beam scanning, measurement and reporting flow.

[0040] The present application realizes beam prediction in the first communication node or the second communication node by transmitting signaling between the first communication node and the second communication node. When the first communication node realizes beam prediction, the CSI information and time stamp information reported from the second communication node are CSI information and time stamp information measured by the second communication node, and when the second communication node realizes beam prediction, the CSI information and time stamp information reported from the second communication node are CSI information and time stamp information predicted by the second communication node.

[0041] In one embodiment, the CSI information includes at least one of RSRP, CRI, RSRQ, a reference signal received signal, SINR, and SNR.

[0042] In one embodiment, the timestamp information includes at least one of a slot index or number, a subframe index or number, and a symbol index or number.

[0043] Taking the CSI information as an example, in this application, the first signaling is used to indicate that the RSRP reported from the second communication node may be the strongest RSRP at one or more timestamps, or may be the RSRP whose strength at one or more timestamps is within Kth place, where K≧2 and K is an integer.

[0044] In addition, the first signaling is further used to instruct the second communication node to report the RSRP of a fixed CRI or the RSRP of a fixed transmit beam or the RSRP of a fixed transmit / receive beam pair, thereby tracking the movement trajectory of the second communication node and assisting in AI prediction.

[0045] S220, reporting the CSI information and the time stamp information to the first communication node.

[0046] In one embodiment, before S220 is executed, the second communication node may further receive second signaling transmitted from the first communication node to indicate that the receiving beam of the second communication node does not change, because if the receiving beam of the second communication node changes, this may cause the CSI information and timestamp information reported by the second communication node to become invalid.

[0047] In one embodiment, the commonality of the above embodiments of the present application is that there is no need to transmit CSI-RS resources at some time instants. Thus, for semi-persistent CSI-RS resources or semi-persistent CSI reports, the second communication node may further receive a third signaling transmitted from the first communication node to indicate at least one of an activation period and a deactivation period for one beam prediction process.

[0048] The third signaling can be indicated in any of the following three ways:

[0049] For Scheme 1, when the activation period and the deactivation period are consecutive periods, the third signaling includes at least one of an activation period number M and a deactivation period number N, where N and M are positive integers.

[0050] For method 2, the third signaling adopts a bitmap to indicate that the activation period and the deactivation period are discontinuous periods.

[0051] For scheme 3, if the CSI-RS is aperiodic CSI-RS, the third signaling includes configuring at least one of a bitmap of CSI-RS resources, a repetition number of CSI-RS resources, a bitmap of CSI-RS resource set, and a repetition number of CSI-RS resource set.

[0052] In one embodiment, for time domain beam prediction, the present application defines new CSI-RS resource set types where the attributes of aperiodic, periodic, and semi-durable CSI-RS resource sets are defined in a resource subset hierarchy.

[0053] The configuration parameters for the resource subset include at least one of a repetition number or a repetition factor, an offset, and a bitmap.

[0054] The following lists some exemplary embodiments to describe the signaling transmission method and the signaling reception method of the above embodiment of the present application. The following exemplary embodiments may be implemented singly or in combination. In the following exemplary embodiments, the first communication node is referred to as a base station, and the second communication node is referred to as a UE.

[0055] In a first exemplary embodiment, assuming that the AI-based beam prediction is realized in the base station, for the CSI reporting setting, the base station sends a first signaling to the UE, where the first signaling is used to instruct the UE to report CSI information and timestamp information at one or more timestamps. The UE reports the CSI information and timestamp information to the base station according to the first command, thereby reducing the number of reports. Wherein, the CSI information includes at least one of RSRP, CRI, RSRQ, reference signal received signal, SINR, and SNR. The timestamp information includes at least one of slot index or slot number, subframe index or subframe number, and symbol index or symbol number.

[0056] For example, Fig. 6 illustrates a schematic diagram of beam prediction according to an embodiment. As shown in Fig. 6, assuming that transmission slot indexes of periodic CSI-RS are 1, 2, 3, ... (i.e., the period is 1), one CSI-RS resource subset period includes five slot indexes, i.e., the number of repetitions of the CSI-RS subset period is 5. The base station instructs the UE to report CSI information in slots 1, 2, and 3, so that the UE reports to the base station CSI information (e.g., CRI / RSRP) in slot 1 and corresponding slot index 1, CSI information (e.g., CRI / RSRP) in slot 2 and corresponding slot index 2, and CSI information (e.g., CRI / RSRP) in slot 3 and corresponding slot index 3, whereby the base station predicts optimal beams for slot indexes 4 and 5.

[0057] Further, for example, Fig. 7 shows another beam prediction schematic diagram according to an embodiment. As shown in Fig. 7, assuming that transmission slot indexes of periodic CSI-RS are 1, 2, 3, ... (i.e., the period is 1), one CSI-RS period includes one slot index. The base station instructs the UE to report CSI information in slots 1, 3, and 5, so that the UE reports to the base station CSI information (e.g., CRI / RSRP) in slot 1 and corresponding slot index 1, CSI information (e.g., CRI / RSRP) in slot 3 and corresponding slot index 3, and CSI information (e.g., CRI / RSRP) in slot 5 and corresponding slot index 5, whereby the base station predicts an optimal beam for slot index 6.

[0058] Alternatively, the base station instructs the UE to report CSI information in slots 3, 5, and 7, so that the UE reports to the base station CSI information (e.g., CRI / RSRP) in slot 3 and corresponding slot index 3, CSI information (e.g., CRI / RSRP) in slot 5 and corresponding slot index 5, and CSI information (e.g., CRI / RSRP) in slot 7 and corresponding slot index 7, thereby allowing the base station to predict the optimal beam for slot index 8. And so it continues.

[0059] Similarly, assuming that AI-based beam prediction is implemented in the UE, taking the beam prediction schematic diagram shown in Fig. 6 as an example, the base station instructs the UE to report CSI information in slots 4 and 5, so that the UE predicts optimal beams for slot indexes 4 and 5 based on the CSI information (e.g., CRI / RSRP) in slot 1 and corresponding slot index 1, the CSI information (e.g., CRI / RSRP) in slot 2 and corresponding slot index 2, and the CSI information (e.g., CRI / RSRP) in slot 3 and corresponding slot index 3. Then, the UE reports the predicted CSI information (e.g., CRI / RSRP) in slot 4 and corresponding slot index 4, and the CSI information (e.g., CRI / RSRP) in slot 5 and corresponding slot index 5 to the base station.

[0060] In one embodiment, the CRI / RSRP reported by the UE may be the strongest CRI / RSRP at one or more timestamps, or may be the CRI / RSRP whose strength at one or more timestamps is within K, where K>2 and K is an integer. The UE may also report the CRI / RSRP of a fixed CRI, or the CRI / RSRP of a fixed transmit beam, or the CRI / RSRP of a fixed transmit / receive beam pair to track the UE's movement trajectory and assist AI prediction.

[0061] During the entire time-domain beam prediction process (several measurement periods), the base station instructs the UE via higher layer signaling to keep the receive beam unchanged, otherwise the reported CRI / RSRP may become meaningless.

[0062] In the second exemplary embodiment, it can be seen in combination with the first exemplary embodiment, the commonality of the above embodiments is that there is no need to transmit CSI-RS resources at some time points. Since the AI ​​model based on a recurrent neural network (RNN) has an input and output with a definite length, the input of the AI ​​model is defined as the optimal beam index for M periods, and the output is defined as the optimal beam index for N periods in the future. Therefore, for semi-persistent CSI-RS resources or semi-persistent CSI reports, the base station may further transmit a third signaling to the UE, and the third signaling is used to indicate at least one of an activation period and a deactivation period in one beam prediction process, i.e., to specify at least one of a media access control element (MAC CE) activation period and a deactivation period.

[0063] The third signaling can be indicated in any of the following three ways:

[0064] 1) When the activation period and the deactivation period are consecutive periods, the third signaling includes at least one of an activation period number M and a deactivation period number N, where N and M are positive integers.

[0065] In this method, the third signaling includes at least one of a number of activation periods M and a number of deactivation periods N, i.e., automatically deactivating after activating M periods, or automatically re-activating after deactivating N periods, or automatically deactivating N periods after activating M periods (i.e., activating one time-domain beam prediction process).

[0066] 8 is a schematic diagram of an activation cycle and a deactivation cycle according to an embodiment. As shown in FIG. 8, assuming that the transmission slot indexes of the periodic CSI-RS are 1, 2, 3, ... (i.e., the cycle is 1), one CSI-RS cycle includes one slot index. The third signaling includes an activation cycle of 3 and a deactivation cycle of 2, that is, in one beam prediction process, two CSI-RS resource set cycles are automatically deactivated after three CSI-RS resource set cycles are activated, and the cycle of one beam prediction process is five CSI-RS resource set cycles.

[0067] 2) If the activation period and the deactivation period are discontinuous periods, the third signaling employs a bitmap to indicate this.

[0068] In this method, the third signaling is indicated by a bitmap, that is, the activation / deactivation pattern is indicated by the bitmap. For example, 1 in the bitmap represents activation, and 0 in the bitmap represents deactivation.

[0069] 9 is a schematic diagram of another activation cycle and deactivation cycle according to an embodiment. As shown in FIG. 9, assuming that the transmission slot indexes of the periodic CSI-RS are 1, 2, 3, ... (i.e., the cycle is 1), one CSI-RS cycle includes one slot index. The bitmap of the third signaling is set to 10101, i.e., in one beam prediction process, the first, third and fifth CSI-RS resource set cycles are activation cycles, the second and fourth CSI-RS resource set cycles are deactivation cycles, and the cycle of one beam prediction process is five CSI-RS resource set cycles.

[0070] 3) If the CSI-RS is aperiodic CSI-RS, the third signaling includes configuring at least one of a bitmap of CSI-RS resources, a repetition number of CSI-RS resources, a bitmap of CSI-RS resource sets, and a repetition number of CSI-RS resource sets.

[0071] In this manner, taking Fig. 8 as an example, the number of repetitions is 3, and the UE can report CSI information to the base station based on the number of repetitions of the CSI-RS resource or the number of repetitions of the CSI-RS resource set. Or, taking Fig. 9 as an example, the number of repetitions is 5, and the bitmap is set to 10101, and the UE can configure the CSI-RS resource set or the CSI-RS resource in combination with the number of repetitions 5 and the bitmap 10101. Or, taking Fig. 9 as an example, the number of repetitions may also be understood as 3, that is, what is described is the number of times the CSI-RS resource set or the CSI-RS resource is actually repeatedly transmitted, and the bitmap is 10101.

[0072] In a third exemplary embodiment, for time domain beam prediction, the present application defines a new CSI-RS resource set type where attributes of aperiodic, periodic, and semi-durable CSI-RS resource sets are defined in a resource subset hierarchy.

[0073] Figure 10 shows a schematic diagram of a periodic CSI-RS resource according to an embodiment, and Figure 11 shows a schematic diagram of a CSI-RS resource in the case of spatial domain beam prediction according to an embodiment. As can be seen in conjunction with Figures 10 and 11, in the case of spatial domain beam prediction, compared to the periodic CSI-RS resource, a spatial domain beam in each slot can be predicted based on a beam measured in the slot.

[0074] For CSI-RS resources in the case of time-domain beam prediction, the attributes of aperiodic ZP CSI-RS, periodic ZP CSI-RS, and semi-durable ZP CSI-RS are defined in a resource subset hierarchy. FIG. 12 illustrates a schematic diagram of a CSI-RS resource subset in the case of time-domain beam prediction according to an embodiment. Exemplarily, the entire resource subset illustrated in FIG. 12 is taken as a single entity (i.e., a configuration period). At the same time, for the entire resource subset illustrated in FIG. 12, the configuration parameters are the number of repetitions or repetition factor, offset, and bitmap. Among them, offset indicates a resource position, and bitmap is 0, which indicates that a reference signal resource is not transmitted at this position, and bitmap is 1, which indicates that a reference signal resource is transmitted.

[0075] For example, in Figure 12, five beam scanning positions (beam scanning is performed at the first three positions and not at the last two positions) are treated as a whole, the repetition number is 5, and the bitmap is 11100, but the offset parameter is defined in the resource set hierarchy, and assuming that the five beam scanning positions are consecutive slots, the offset set in the first CSI-RS resource set is 0, the offset set in the second CSI-RS resource set is 1, and the offset set in the third CSI-RS resource set is 2.

[0076] In the present application, spatial domain beam prediction and time domain beam prediction can also be combined to transmit sampling beams at only some time instants to reduce overhead. FIG. 13 illustrates a schematic diagram of a CSI-RS resource subset combined with spatial domain beam prediction and time domain beam prediction according to an embodiment. When spatial domain beam prediction and time domain beam prediction are combined, the second stage bitmap can be adopted to indicate the position of the sampling beam (i.e., the position of the historical beam measurement). As shown in FIG. 13, the first stage bitmap is 11100, and for the first beam scan in FIG. 13, the second stage bitmap is 11111, for the second beam scan, the second stage bitmap is 10101, and for the third beam scan, the second stage bitmap is 01110.

[0077] In addition, for CSI reporting, aperiodicity, periodicity, and semi-durability attributes of CSI reporting are defined in the resource subset hierarchy, and the principle is similar to that described in the above embodiment, and for brevity, the description is omitted here.

[0078] FIG. 14 shows a structural schematic diagram of a signaling sending device according to an embodiment, which may be disposed in a first communication node. As shown in FIG.

[0079] The transmitting module 10 is configured to transmit a first signaling to a second communication node, the first signaling being used to instruct the second communication node to report channel state information (CSI) and timestamp information at one or more timestamps. The receiving module 11 is configured to receive the reported CSI and timestamp information from the second communication node.

[0080] The signaling transmission device of this embodiment is a signaling transmission method for realizing the embodiment shown in Figure 4, and the realization principle and technical effect of the signaling transmission device of this embodiment are similar to those of the above embodiment, so the description is omitted here.

[0081] In one embodiment, the CSI information includes at least one of a reference signal received power RSRP, a channel state information reference signal resource indication CRI, a reference signal received quality RSRQ, a reference signal received signal, a signal-to-interference-and-noise ratio SINR, and a signal-to-noise ratio SNR.

[0082] In one embodiment, the timestamp information includes at least one of a slot index or number, a subframe index or number, and a symbol index or number.

[0083] In one embodiment, the first signaling is further used to instruct the second communication node to report the RSRP of the fixed CRI or the RSRP of the fixed transmit beam or the RSRP of the fixed transmit / receive beam pair.

[0084] In one embodiment, the transmitting module 10 is further configured to transmit second signaling to the second communication node before the receiving module 11 receives the CSI information and timestamp information reported from the second communication node to instruct the second communication node that the receiving beam of the second communication node is not to change.

[0085] In one embodiment, for a semi-persistent channel state information reference signal CSI-RS resource or a semi-persistent CSI report, the transmitting module 10 is further configured to transmit to the second communication node a third signaling for indicating at least one of an activation period and a deactivation period for one beam prediction process.

[0086] In one embodiment, the third signaling is indicated in one of the following ways:

[0087] If the activation period and the deactivation period are continuous periods, the third signaling includes at least one of an activation period number M and a deactivation period number N, where N and M are positive integers. If the activation period and the deactivation period are discontinuous periods, the third signaling employs a bitmap to indicate. If the CSI-RS is aperiodic CSI-RS, the third signaling includes configuring at least one of a CSI-RS resource bitmap, a CSI-RS resource repetition number, a CSI-RS resource set bitmap, and a CSI-RS resource set repetition number.

[0088] In one embodiment, for time domain beam prediction, attributes of aperiodic, periodic, and semi-durable channel state information reference signal resource sets (CSI-RS resource sets) are defined in a resource subset hierarchy.

[0089] In one embodiment, the configuration parameters for the resource subset include at least one of a repetition number or repetition factor, an offset, and a bitmap.

[0090] FIG. 15 shows a structural schematic diagram of a signaling receiving device according to an embodiment, which may be located in a second communication node. As shown in FIG.

[0091] The receiving module 20 is configured to receive first signaling transmitted from a first communication node for instructing a second communication node to report channel state information (CSI) and timestamp information at one or more timestamps. The transmitting module 21 is configured to report the CSI and timestamp information to the first communication node.

[0092] The signaling receiving device of this embodiment is a signaling receiving method that realizes the embodiment shown in Figure 5, and the realization principle and technical effect of the signaling receiving device of this embodiment are similar to those of the above embodiment, so the description is omitted here.

[0093] In one embodiment, the CSI information includes at least one of a reference signal received power RSRP, a channel state information reference signal resource indication CRI, a reference signal received quality RSRQ, a reference signal received signal, a signal-to-interference-and-noise ratio SINR, and a signal-to-noise ratio SNR.

[0094] In one embodiment, the timestamp information includes at least one of a slot index or number, a subframe index or number, and a symbol index or number.

[0095] In one embodiment, the first signaling is further used to instruct the second communication node to report a fixed CRI or an RSRP in case of a fixed transmit beam or a fixed transmit / receive beam pair.

[0096] In one embodiment, the receiving module 20 is further configured to receive a second signaling sent from the first communication node before the transmitting module 21 reports the CSI information and the timestamp information to the first communication node, the second signaling being for indicating that the receiving beam of the second communication node is not to change.

[0097] In one embodiment, for a semi-persistent channel state information reference signal CSI-RS resource or a semi-persistent CSI report, the receiving module 20 is further configured to receive a third signaling transmitted from the first communication node, the third signaling for indicating at least one of an activation period and a deactivation period for one beam prediction process.

[0098] In one embodiment, the third signaling is indicated in one of the following ways:

[0099] If the activation period and the deactivation period are continuous periods, the third signaling includes at least one of an activation period number M and a deactivation period number N, where N and M are positive integers. If the activation period and the deactivation period are discontinuous periods, the third signaling employs a bitmap to indicate. If the CSI-RS is aperiodic CSI-RS, the third signaling includes configuring at least one of a CSI-RS resource bitmap, a CSI-RS resource repetition number, a CSI-RS resource set bitmap, and a CSI-RS resource set repetition number.

[0100] In one embodiment, for time domain beam prediction, attributes of aperiodic, periodic, and semi-durable channel state information reference signal resource sets (CSI-RS resource sets) are defined in a resource subset hierarchy.

[0101] In one embodiment, the configuration parameters for the resource subset include at least one of a repetition number or repetition factor, an offset, and a bitmap.

[0102] The present application further provides a communication node including a processor that is used to realize the method according to any of the embodiments of the present application when the processor executes a computer program. The communication node may be an access network device or a terminal device according to any of the embodiments of the present application, and the present application is not limited thereto.

[0103] For illustrative purposes, the following embodiments provide structural schematic diagrams in which the communication nodes are a base station and a UE, respectively.

[0104] Fig. 16 shows a structural schematic diagram of a base station according to an embodiment. As shown in Fig. 16, the base station includes a processor 60, a memory 61, and a communication interface 62. The number of processors 60 in the base station may be one or more, and Fig. 16 takes one processor 60 as an example. The processor 60, the memory 61, and the communication interface 62 in the base station may be connected by a bus or other methods, and Fig. 16 takes them as an example connected by a bus. The bus may be one or more of several bus structures, and may be a memory bus or a memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any bus structure among several bus structures.

[0105] As a computer-readable storage medium, the memory 61 may be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the methods in the embodiments of the present application. The processor 60 executes at least one function application and data processing of the base station by running the software programs, instructions, and modules stored in the memory 61, i.e., realizing the above-mentioned methods.

[0106] The memory 61 may include a program storage area and a data storage area. The program storage area may store an operating system and applications necessary for at least one function. The data storage area may store data generated in response to the use of the terminal. The memory 61 may also include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, flash memory, or another non-volatile solid-state memory. In some examples, the memory 61 may include memory located remotely with respect to the processor 60. These remote memories may be connected to a base station via a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a network, a mobile communication network, and combinations thereof.

[0107] Communications interface 62 may be configured to receive and transmit data.

[0108] FIG. 17 shows a structural schematic diagram of a UE according to one embodiment. The UE may be implemented in a variety of forms. The UE in this application includes, but is not limited to, mobile terminal devices such as mobile phones, smartphones, notebook computers, digital broadcast receivers, personal digital assistants (PDAs), tablets (Portable Devices (PADs), Portable Media Players (PMPs), navigation devices, in-vehicle terminal devices, in-vehicle display terminals, and in-vehicle electronic rearview mirrors, and fixed terminal devices such as digital televisions (TVs) and desktop computers.

[0109] As shown in Fig. 17, the UE 50 may include a wireless communication unit 51, an audio / video (A / V) input unit 52, a user input unit 53, a sensing unit 54, an output unit 55, a memory 56, an interface unit 57, a processor 58, and a power unit 59, etc. Although Fig. 17 illustrates a UE including multiple types of assemblies, it should be understood that not all of the illustrated assemblies are required to be implemented. More or fewer assemblies may be implemented instead.

[0110] In this embodiment, the wireless communication unit 51 enables wireless communication between the UE 50 and a base station or a network. The A / V input unit 52 is configured to receive audio or video signals. The user input unit 53 can control several kinds of operations of the UE 50 by generating key input data according to an instruction input by a user. The sensing unit 54 is configured to detect the current state of the UE 50, the position of the UE 50, the presence or absence of a user's touch input to the UE 50, the orientation of the UE 50, and the acceleration or deceleration movement and direction of the UE 50, and generate an instruction or signal to control the operation of the UE 50. The interface unit 57 is used as an interface through which at least one external device can be connected to the UE 50. The output unit 55 is configured to provide an output signal in a visual, audio, and / or tactile manner. The memory 56 may store software programs and the like that control the processes and operations performed by the processor 58, or may temporarily store data that has been output or will be output. The memory 56 may include at least one type of storage medium. And, the UE 50 may cooperate with a network storage device that performs the storage functions of the memory 56 through a network connection. The processor 58 is generally configured to control the overall operation of the UE 50. The power supply unit 59 is configured to receive external or internal power under the control of the processor 58 and provide the appropriate power required to operate the various elements and assemblies.

[0111] The processor 58 is configured to run programs stored in the memory 56 and to perform at least one functional application and data processing, for example to implement the methods according to the embodiments of the present application.

[0112] An embodiment of the present disclosure further provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method according to any embodiment of the present application.

[0113] The computer storage medium in the present application embodiment may employ any combination of one or more computer readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or any combination of the above. The computer readable storage medium includes an electrical connection having one or more wires, a portable computer disk, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a flash memory, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical memory device, a magnetic memory device, or any suitable combination of the above (non-exhaustive list). In this application, a computer readable storage medium may be any tangible medium that contains or stores a program that may be used by or in conjunction with an instruction execution system, apparatus or device.

[0114] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier, the data signal carrying a computer-readable program code. Such a propagated data signal may be in several forms, including, but not limited to, an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0115] The program code contained in the computer readable medium may be transmitted over any suitable medium, including but not limited to, wireless, wire, fiber optic cable, Radio Frequency (RF), or the like, or any suitable combination of the above.

[0116] Computer program code for carrying out the operations of the present disclosure may be written in one or more programming languages ​​or a combination of multiple programming languages. Programming languages ​​include object-oriented programming languages ​​(e.g., Java, Smalltalk, C++, Ruby, Go) and also include traditional procedural programming languages ​​(e.g., "C" or similar programming languages). The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network (including a Local Area Network (LAN) or a Wide Area Network (WAN)) or may be connected to an external computer (e.g., connected via the Internet using an Internet Service Provider).

[0117] It will be understood by those skilled in the art that the term user terminal encompasses any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser, or a vehicle mounted mobile station.

[0118] In general, various embodiments of the present application may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof (for example, some aspects may be implemented in hardware, and other aspects may be implemented in firmware or software executable by a controller, microprocessor, or other computing device, although the present application is not limited thereto).

[0119] The embodiments of the present application may be implemented, for example in a processor entity, or by hardware, or by a combination of software and hardware, by a data processor of a mobile device executing computer program instructions, which may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages.

[0120] Any logic flow block diagrams in the drawings of this application may represent program steps, or interconnected logic circuits, modules and functions, or a combination of program steps and logic circuits, modules and functions. The computer program may be stored in a memory. The memory may have any suitable type suitable for the local technology environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), and optical storage devices and systems (digital video disks DVD or CD optical disks). The computer readable medium may include non-transitory storage media. The data processor may be any type suitable for the local technology environment, such as, but not limited to, a general purpose computer, a special purpose computer, a microprocessor, a digital signal processor (Digital Signal Processing, DSP), an application specific integrated circuit (ASIC), a programmable logic device (Field-Programmable Gate Array, FPGA), and a processor based on a multi-core processor architecture.

Claims

1. A method for transmitting signaling applied to a first communication node, comprising: sending a first signaling to a second communication node, the first signaling being used to instruct the second communication node to report channel state information (CSI) information and timestamp information at at least one timestamp; receiving the CSI information and the time stamp information reported from the second communication node; A method for transmitting signaling, comprising:

2. The CSI information includes at least one of a reference signal received power RSRP, a channel state information reference signal resource indication CRI, a reference signal received quality RSRQ, a received signal of a reference signal, a signal-to-interference-plus-noise ratio SINR, and a signal-to-noise ratio SNR; The method of claim 1.

3. The time stamp information includes at least one of a slot index or slot number, a subframe index or subframe number, and a symbol index or symbol number. The method of claim 1.

4. The first signaling is further used to instruct the second communication node to report a RSRP of a fixed CRI, or a RSRP of a fixed transmission beam, or a RSRP of a fixed transmission / reception beam pair. The method of claim 1.

5. Before receiving the CSI information and the time stamp information reported from the second communication node, and transmitting second signaling to the second communication node to indicate that a receiving beam of the second communication node is not to be changed. The method of claim 1.

6. For semi-persistent channel state information reference signal (CSI-RS) resources or semi-persistent CSI reports, the method comprises: and transmitting, to the second communication node, third signaling for indicating at least one of an activation period and a deactivation period in one beam prediction step. The method of claim 1.

7. The third signaling If the activation period and the deactivation period are consecutive periods, the third signaling includes at least one of an activation period number M and a deactivation period number N, where N and M are positive integers; When the activation period and the deactivation period are discontinuous periods, the third signaling uses a bitmap to indicate the activation period and the deactivation period; when the CSI-RS is a non-periodic CSI-RS, the third signaling includes configuring at least one of a bitmap of a CSI-RS resource, a repetition number of a CSI-RS resource, a bitmap of a CSI-RS resource set, and a repetition number of a CSI-RS resource set; The method according to claim 6.

8. For time domain beam prediction, attributes of aperiodic, periodic, and semi-durable CSI-RS resource sets are defined in a resource subset hierarchy; The method of claim 1.

9. The configuration parameters for the resource subset include at least one of a repetition number or a repetition factor, an offset, and a bitmap; The method according to claim 8.

10. A method for receiving signaling applied to a second communication node, comprising: receiving first signaling transmitted from a first communication node, the first signaling instructing the second communication node to report channel state information (CSI) and timestamp information at at least one timestamp; reporting the CSI information and the time stamp information to the first communication node; A method for receiving signaling, comprising:

11. The CSI information includes at least one of a reference signal received power RSRP, a channel state information reference signal resource indication CRI, a reference signal received quality RSRQ, a reference signal received signal, a signal-to-interference-plus-noise ratio SINR, and a signal-to-noise ratio SNR; The method of claim 10.

12. The time stamp information includes at least one of a slot index or slot number, a subframe index or subframe number, and a symbol index or symbol number. The method of claim 10.

13. The first signaling is further used to instruct the second communication node to report a fixed CRI or an RSRP in the case of a fixed transmit beam or a fixed transmit / receive beam pair. The method of claim 10.

14. before reporting the CSI information and the timestamp information to the first communication node, receiving second signaling transmitted from the first communication node, the second signaling being for indicating that a receiving beam of the second communication node is not to be changed; The method of claim 10.

15. For semi-persistent channel state information reference signal (CSI-RS) resources or semi-persistent CSI reports, the method comprises: and receiving third signaling transmitted from the first communication node, the third signaling being for indicating at least one of an activation period and a deactivation period in one beam prediction step. The method of claim 10.

16. The third signaling If the activation period and the deactivation period are consecutive periods, the third signaling includes at least one of an activation period number M and a deactivation period number N, where N and M are positive integers; When the activation period and the deactivation period are discontinuous periods, the third signaling uses a bitmap to indicate the activation period and the deactivation period; when the CSI-RS is a non-periodic CSI-RS, the third signaling includes configuring at least one of a bitmap of a CSI-RS resource, a repetition number of a CSI-RS resource, a bitmap of a CSI-RS resource set, and a repetition number of a CSI-RS resource set; The method of claim 15.

17. For time domain beam prediction, attributes of aperiodic, periodic, and semi-durable CSI-RS resource sets are defined in a resource subset hierarchy; The method of claim 10.

18. The configuration parameters for the resource subset include at least one of a repetition number or a repetition factor, an offset, and a bitmap; 20. The method of claim 17.

19. A communications node including a processor configured to, when executing a computer program, implement the signaling transmission method according to any one of claims 1 to 9 or the signaling reception method according to any one of claims 10 to 18.

20. A computer-readable storage medium storing a computer program which, when executed by a processor, realizes the signaling transmission method according to any one of claims 1 to 9 or the signaling reception method according to any one of claims 10 to 18.

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