Methods, devices, systems, and storage media for signal demodulation

Abstract

The application provides a signal demodulation method, device, system and storage medium, comprising: determining quasi co-location information of a physical downlink shared channel according to a state of a terminal device, and receiving and demodulating the physical downlink shared channel according to the quasi co-location information. By determining the quasi co-location information based on the state, the quasi co-location information corresponding to the physical downlink shared channel can be determined flexibly and accurately, so that when the physical downlink shared channel is received and demodulated based on the quasi co-location information, the technical effects of improving the reliability and accuracy of demodulation can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a signal demodulation method, device, system and storage medium. BACKGROUND

[0002] With the development of Internet technology, how to realize the effectiveness of data transmission between a terminal device such as a user equipment (UE) and a network device has become a problem to be solved urgently, and in order to ensure the effectiveness of data transmission between the terminal device and the network device, demodulating a signal received from a physical downlink shared channel (PDSCH) is crucial.

[0003] Generally, a network device sends a synchronization signal (SS) and a physical broadcast channel (PBCH) to a user equipment, and sends control information on the physical broadcast channel, and the terminal device can demodulate according to the synchronization signal and the control information.

[0004] However, the inventors have found at least the following problems in the process of implementing the present application: the state (such as the movement) of the terminal device is not considered, resulting in that the physical downlink shared channel cannot be accurately received and demodulated.

[0005] The foregoing description is to provide general background information and does not necessarily constitute the prior art. SUMMARY

[0006] The present application provides a signal demodulation method, device, system and storage medium to solve the problem that the physical downlink shared channel cannot be accurately received and demodulated.

[0007] In one aspect, the present application provides a signal demodulation method, comprising the following steps:

[0008] S11, determining the quasi co-site information of the physical downlink shared channel according to the state of the terminal device;

[0009] S12, receiving and demodulating the physical downlink shared channel according to the quasi co-site information.

[0010] In some embodiments, the state is at least one of the following of the terminal device: motion state, moving speed, moving direction.

[0011] In some embodiments, the method further comprises at least one of the following:

[0012] The quasi co-location information is used for indicating quasi co-location between the physical downlink shared channel and a preset reference signal when the terminal device is in a stationary state.

[0013] The quasi co-location information is not used for indicating quasi co-location between the physical downlink shared channel and a preset reference signal when the terminal device is in a moving state.

[0014] The quasi co-location information is used for indicating quasi co-location between the physical downlink shared channel and a preset reference signal when the moving speed is less than or equal to a first preset value.

[0015] The quasi co-location information is not used for indicating quasi co-location between the physical downlink shared channel and a preset reference signal when the moving speed is greater than the first preset value.

[0016] In some embodiments, the reference signal comprises at least one of:

[0017] a reference signal with the maximum signal strength detected by the terminal device when receiving the reference signal;

[0018] a reference signal with the maximum signal-to-interference-and-noise ratio detected by the terminal device when receiving the reference signal.

[0019] In some embodiments, when the moving speed is greater than the first preset value, further comprising:

[0020] The quasi co-location information is quasi co-location information corresponding to a control resource with a minimum index in a control resource set carried on a time slot group.

[0021] In some embodiments, further comprising at least one of:

[0022] The time slot group comprises at least one time slot, and the at least one time slot is closest to a current downlink shared channel in time.

[0023] The moving speed is greater than the first preset value and less than a second preset value, and the first preset value is less than the second preset value.

[0024] In some embodiments, further comprising at least one of:

[0025] The time slot group comprises at least two continuous time slots, the time slot group is closest to a current downlink shared channel in time, and the quasi co-location information is a normalized value of quasi co-location information corresponding to a control resource with a minimum index in a control resource set of each time slot of the time slot group.

[0026] The moving speed is greater than the first preset value and greater than or equal to a second preset value, and the first preset value is less than the second preset value.

[0027] In some embodiments, the S12 step further comprises:

[0028] determining a receiving direction of the signal according to the quasi co-location information;

[0029] receiving and demodulating the physical downlink shared channel in the receiving direction.

[0030] In some embodiments, before the S11 step, the method further comprises:

[0031] receiving a downlink control information sent by a network device;

[0032] determining an offset time of receiving and demodulating the physical downlink shared channel according to the downlink control information;

[0033] if the offset time is less than a preset time threshold, obtaining the state.

[0034] In some embodiments, before the S11 step, the method further comprises:

[0035] determining a state of transmission configuration indication information according to the downlink control information;

[0036] if the state of the transmission configuration indication information is an enabling state, obtaining the state.

[0037] In another aspect, the embodiments of the present application also provide a terminal device, which comprises:

[0038] a determining module configured to determine quasi co-location information of a physical downlink shared channel according to a state of the terminal device;

[0039] a processing module configured to receive and demodulate the physical downlink shared channel according to the quasi co-location information.

[0040] In some embodiments, the state is at least one of the following of the terminal device: a motion state, a moving speed, a moving direction.

[0041] In some embodiments, the following at least one is further included:

[0042] when the terminal device is in a stationary state, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal;

[0043] when the terminal device is in a motion state, the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal;

[0044] when the moving speed is less than or equal to a first preset value, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal;

[0045] when the moving speed is greater than the first preset value, the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal.

[0046] In some embodiments, the reference signal comprises at least one of:

[0047] a reference signal with the largest signal strength detected by the terminal device when receiving the reference signal;

[0048] a reference signal with the largest signal-to-interference-and-noise ratio detected by the terminal device when receiving the reference signal.

[0049] In some embodiments, when the moving speed is greater than the first preset value, further comprising:

[0050] the quasi co-location information is quasi co-location information corresponding to a control resource with a smallest index in a control resource set carried on a time slot group.

[0051] In some embodiments, further comprising at least one of:

[0052] the time slot group comprises at least one time slot, and the at least one time slot is closest in time to a current downlink shared channel;

[0053] the moving speed is greater than the first preset value and less than a second preset value, and the first preset value is less than the second preset value.

[0054] In some embodiments, further comprising at least one of:

[0055] the time slot group comprises at least two continuous time slots, the time slot group is closest in time to a current downlink shared channel, and the quasi co-location information is a normalized value of quasi co-location information corresponding to a control resource with a smallest index in a control resource set of each time slot of the time slot group;

[0056] the moving speed is greater than the first preset value and greater than or equal to a second preset value, and the first preset value is less than the second preset value.

[0057] In some embodiments, the processing module is specifically configured to determine a receiving direction of a signal according to the quasi co-location information, and receive and demodulate the physical downlink shared channel in the receiving direction.

[0058] In another aspect, the embodiments of the present application also provide a user equipment, comprising:

[0059] a memory, a processor;

[0060] The memory is configured to store instructions executable by the processor, and when the processor executes the instructions in the memory, the method in any one of the above embodiments is implemented.

[0061] In some embodiments, the terminal device further includes:

[0062] a receiving module configured to receive downlink control information sent by a network device;

[0063] The determining module is further configured to determine, according to the downlink control information, an offset time for receiving and demodulating the physical downlink shared channel.

[0064] a obtaining module configured to obtain the state if the offset time is less than a preset time threshold.

[0065] In some embodiments, the determining module is further configured to determine, according to the downlink control information, a state of transmission configuration indication information.

[0066] The obtaining module is specifically configured to obtain the state if the state of the transmission configuration indication information is an enabled state.

[0067] In another aspect, the embodiments of the present application also provide a method for signal demodulation, the method is applied to a network device, and the method includes the following steps:

[0068] S41: generating downlink control information;

[0069] S42: sending the downlink control information, wherein the downlink control information is used to instruct a terminal device to receive and demodulate a physical downlink shared channel.

[0070] In another aspect, the embodiments of the present application also provide an electronic device, including: a memory, a processor;

[0071] The memory is configured to store instructions executable by the processor.

[0072] When the processor executes the instructions in the memory, the method in any one of the above embodiments is implemented.

[0073] In another aspect, the embodiments of the present application also provide a computer readable storage medium, the computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by a processor to implement the method in any one of the above embodiments.

[0074] In another aspect, the embodiments of the present application also provide a network device, the network device includes:

[0075] The generating module is configured to generate downlink control information.

[0076] The sending module is configured to send the downlink control information, where the downlink control information is used to instruct the terminal device to receive and demodulate the physical downlink shared channel.

[0077] In another aspect, the embodiments of the present application further provide a system for signal demodulation, which comprises:

[0078] The terminal device according to any one of the above embodiments;

[0079] The network device according to the above embodiments.

[0080] The present application provides a method, device, system and storage medium for signal demodulation, comprising: determining quasi co-site information of a physical downlink shared channel according to a state of a terminal device, and receiving and demodulating the physical downlink shared channel according to the quasi co-site information. By determining the quasi co-site information based on the state, the quasi co-site information corresponding to the physical downlink shared channel can be determined flexibly and accurately, so that the reliability and accuracy of demodulation can be improved when the physical downlink shared channel is received and demodulated based on the quasi co-site information. BRIEF DESCRIPTION OF DRAWINGS

[0081] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0082] Figure 1 A scene schematic diagram of a method for signal demodulation according to an embodiment of the present application;

[0083] Figure 2 A flowchart of a method for signal demodulation according to an embodiment of the present application;

[0084] Figure 3 A flowchart of a method for signal demodulation according to another embodiment of the present application;

[0085] Figure 4 A flowchart of a method for signal demodulation according to still another embodiment of the present application;

[0086] Figure 5 A time offset schematic diagram according to an embodiment of the present application;

[0087] Figure 6 A schematic diagram of an apparatus for signal demodulation according to an embodiment of the present application;

[0088] Figure 7 A schematic diagram of an apparatus for signal demodulation according to another embodiment of the present application;

[0089] Figure 8A structural schematic diagram of an electronic device according to an embodiment of the present application;

[0090] Figure 9 A flowchart of a signal demodulation method according to another embodiment of the present application;

[0091] Figure 10 A schematic diagram of a network device according to an embodiment of the present application.

[0092] The above-described figures have shown specific embodiments of the present application, which will be described in more detail hereinafter. These figures and the written description are not intended to restrict the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0093] The exemplary embodiments will be described in detail herein below with reference to the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0094] The signal demodulation method according to an embodiment of the present application can be applied to an application scenario as shown in Figure 1

[0095] The signal demodulation method according to an embodiment of the present application can be applied to an application scenario as shown in Figure 1 It can be understood that the system for signal demodulation includes a network device and a terminal device. In an application scenario as shown in Figure 1

[0096] The communication link can be established between the terminal device and the network device, and the terminal device can perform data transmission with the network device based on the communication link.

[0097] It is worth noting that Figure 1 The terminal device is exemplarily shown in Figure 1 The network device includes a base station as shown in

[0098] Specifically, Figure 1 ​​The application scenarios can be applicable to different network systems, for example, can be applicable to Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Long Term Evolution (LTE) system, 5G and the like. Optionally, the communication system can be a system in a scenario of Ultra-Reliable and Low Latency Communications (URLLC) transmission in a 5G communication system.

[0099] Therefore, the base station can be a base transceiver station (BTS) and / or a base station controller in GSM or CDMA, can be a node B (NB) and / or a radio network controller (RNC) in WCDMA, can be an evolutional node B (eNB or eNodeB) in LTE, or can be a relay station or an access point, or can be a next generation node B (gNB) in a 5G network, and the like, which are not limited herein.

[0100] The terminal device can be a wireless terminal or a wired terminal. The wireless terminal can be a device that provides voice and / or other service data connectivity to a user, a hand-held device having wireless connection capability, or other processing device connected to a wireless modem. The wireless terminal can communicate with one or more core network devices via a Radio Access Network (RAN), and can be a mobile terminal, such as a mobile telephone (also known as a "cellular" telephone) and a computer with a mobile termination, e.g., a portable, pocket, hand-held, computer-included or car-mounted mobile device which can communicate with a radio access network. The wireless terminal can also be a Personal Communication Service (PCS) telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. The wireless terminal can also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, an access terminal, a user terminal, a user agent, a user device, or the like, without limitation. Optionally, the user device can also be a smart watch, a tablet computer, or the like.

[0101] The network device sends a synchronization signal and a physical broadcast channel to the terminal device, and control information sent on the physical broadcast channel, and the terminal device can receive and demodulate the signal carried by the physical downlink shared channel according to the synchronization signal and the control information.

[0102] The above scheme does not consider the state (such as the movement) of the terminal device, resulting in that the signal carried by the physical downlink shared channel cannot be accurately received, so that the signal carried by the physical downlink shared channel cannot be demodulated.

[0103] For example, in the case of Figure 1As shown in the application scenario, the base station sends a synchronization signal and a physical broadcast channel to the mobile phone based on the current direction of the mobile phone. If the mobile phone is in a moving state, the direction of the mobile phone has changed when the mobile phone receives the synchronization signal and the physical broadcast channel. If the mobile phone receives and demodulates the signal from the base station in the changed direction, there may be an inaccurate problem of receiving the signal.

[0104] To solve the above technical problems, the inventors of the present application have, after creative labor, obtained the inventive concept of the embodiments of the present application: receiving and demodulating a signal carried by a physical downlink shared channel based on the state of a terminal device.

[0105] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in detail in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0106] According to an aspect of an embodiment of the present application, the embodiment of the present application provides a signal demodulation method applied to a terminal device.

[0107] Please refer to Figure 2 , Figure 2 a flowchart of the signal demodulation method of an embodiment of the present application.

[0108] As Figure 2 shown, the method comprises:

[0109] S11: determining the quasi-co-location information of the physical downlink shared channel according to the state of the terminal device.

[0110] In the embodiments of the present application, the execution subject can be a terminal device for data transmission with a network device, such as a user terminal, and the user terminal includes a mobile phone, an iPad, a smart bracelet, a desktop computer, a notebook computer, a vehicle-mounted terminal, etc. For example, in the application scenario as shown in Figure 1 , the terminal device is a mobile phone.

[0111] The state is used to represent the related information of the motion and / or stillness of the terminal device, that is, if the state is used to represent the related information of the motion of the terminal device, the state can be referred to as a motion state, and if the state is used to represent the related information of the stillness of the terminal device, the state can be referred to as a stillness state. Specifically, when the state is a motion state, the motion state can be used to represent the related information that at least one of the displacement, the speed and the angle of the terminal device changes, such as the moving speed and the moving direction of the terminal device.

[0112] The quasi co-location (QCL) information is used to determine the direction of the physical downlink shared channel, and after the direction of the physical downlink shared channel is determined, the physical downlink shared channel can be received and demodulated based on the determined direction.

[0113] It should be noted that the state of the terminal device is different, and the relative position information between the terminal device and the network device can be different, such as the angle and distance of the terminal device relative to the network device, which can change. The angle mentioned here can be used to represent the angle between the antenna of the terminal device and the beam transmitted by the antenna of the network device.

[0114] In the embodiments of the present application, the quasi co-location information is determined according to the state, which fully considers the difference in the relative position information between the terminal device and the network device due to the different states of the terminal device, and therefore can achieve the technical effect of flexibly determining the quasi co-location information.

[0115] S12: receiving and demodulating the physical downlink shared channel according to the quasi co-location information.

[0116] Based on the above analysis, since the quasi co-location information is determined according to the state, the accuracy of the quasi co-location information can be improved, and therefore the reliability and accuracy of demodulation can be achieved when the physical downlink shared channel is received and demodulated based on the quasi co-location information.

[0117] Based on the above analysis, the embodiments of the present application provide a signal demodulation method, which comprises: determining the quasi co-location information of the physical downlink shared channel according to the state of the terminal device, and receiving and demodulating the physical downlink shared channel according to the quasi co-location information. By determining the quasi co-location information based on the state, the quasi co-location information corresponding to the physical downlink shared channel can be flexibly and accurately determined, and therefore the technical effect of improving the reliability and accuracy of demodulation can be achieved when the physical downlink shared channel is received and demodulated based on the quasi co-location information.

[0118] In some embodiments, the quasi co-location information is used to indicate that the physical downlink shared channel is quasi co-located with a preset reference signal (RS).

[0119] The reference signal can be a reference signal configured and broadcasted by the network device when the terminal device accesses the network device, or a reference signal periodically or aperiodically configured and broadcasted by the network device after the terminal device accesses the network device.

[0120] The reference signal includes a synchronization signal block (SSB) and a channel state information reference signal (CSI-RS).

[0121] In some embodiments, the reference signal is a reference signal with the maximum signal strength and / or the maximum signal-to-interference-and-noise ratio (SINR) detected by the terminal device when receiving the reference signal.

[0122] In some embodiments, the terminal device can detect the signal strength when receiving the reference signal and select the reference signal with the maximum signal strength, or detect the signal-to-interference-and-noise ratio (SINR) when receiving the reference signal and select the reference signal with the maximum SINR. In the embodiments of the present application, the reference signal with the maximum signal strength and / or the maximum SINR can be selected, and the physical downlink shared channel is determined to be quasi co-located with the reference signal with the maximum signal strength and / or the maximum SINR, so as to realize the accuracy and reliability of the determined quasi co-location information.

[0123] In some embodiments, the quasi co-location information is quasi co-location information in a control resource set carried on a time slot group.

[0124] In some embodiments, the quasi co-location information is quasi co-location information corresponding to a control resource with the minimum index in a control resource set carried on a time slot group.

[0125] In some embodiments, the time slot group includes at least one time slot, and the at least one time slot is closest to the current downlink shared channel in time.

[0126] In some embodiments, the time slot group includes at least two consecutive time slots, the time slot group is closest to the current downlink shared channel in time, and the quasi co-location information is a normalized value of quasi co-location information corresponding to a control resource with the minimum index in a control resource set of each time slot of the time slot group.

[0127] The normalized value can be at least one of an average value, a maximum value, and a minimum value.

[0128] For example, when the normalized value is an average value, quasi co-location information corresponding to a control resource with the minimum index is selected from each time slot, the selected quasi co-location information is averaged to obtain an average value, and the average value is determined as the quasi co-location information.

[0129] For another example, when the normalized value is a maximum value, quasi co-location information corresponding to a control resource with the minimum index is selected from each time slot, and quasi co-location information with the maximum value among the selected quasi co-location information is selected as the quasi co-location information.

[0130] For another example, when the normalization value is the minimum value, then from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and from the selected quasi co-location information, the quasi co-location information with the minimum value is selected as the quasi co-location information.

[0131] For another example, when the normalization value is the average value and the maximum value, then from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and the average value of the selected quasi co-location information is obtained, and from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and from the selected quasi co-location information, the quasi co-location information with the maximum value is selected, and the average value is determined as the quasi co-location information, or the quasi co-location information with the maximum value is determined as the quasi co-location information.

[0132] For another example, when the normalization value is the average value and the minimum value, then from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and the average value of the selected quasi co-location information is obtained, and from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and from the selected quasi co-location information, the quasi co-location information with the minimum value is selected, and the average value is determined as the quasi co-location information, or the quasi co-location information with the minimum value is determined as the quasi co-location information.

[0133] For another example, when the normalization value is the average value and the minimum value, then from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and the average value of the selected quasi co-location information is obtained, and from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and from the selected quasi co-location information, the quasi co-location information with the minimum value is selected, and the average value is determined as the quasi co-location information, or the quasi co-location information with the minimum value is determined as the quasi co-location information.

[0134] For another example, when the normalization value is the average value, the maximum value and the minimum value, then from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and the average value of the selected quasi co-location information is obtained, and from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and from the selected quasi co-location information, the quasi co-location information with the maximum value is selected, and from each time slot, the quasi co-location information corresponding to the control resource with the minimum index is selected, and from the selected quasi co-location information, the quasi co-location information with the minimum value is selected, and the average value is determined as the quasi co-location information, or the quasi co-location information with the maximum value is determined as the quasi co-location information, or the quasi co-location information with the minimum value is determined as the quasi co-location information.

[0135] In some embodiments, when the terminal device is in a stationary state, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal.

[0136] In some embodiments, the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal when the terminal device is in a moving state.

[0137] The description about the reference signal can refer to the above examples, which will not be repeated here.

[0138] That is, in the embodiments of the present application, the relationship between the quasi co-location information and the reference signal can be determined based on whether the terminal device is in a stationary state, and specifically, when the terminal device is in a stationary state, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal, and when the terminal device is in a moving state (i.e., a non-stationary state), the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal.

[0139] In some embodiments, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal when the moving speed is less than or equal to a first preset value.

[0140] In some embodiments, the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal when the moving speed is greater than the first preset value.

[0141] The description about the reference signal can refer to the above examples, which will not be repeated here.

[0142] The first preset value can be set based on demand, experience and experiment, etc.

[0143] That is, in the embodiments of the present application, the relationship between the quasi co-location information and the reference signal can be determined based on the size of the moving speed of the terminal device, and specifically, when the terminal device has a smaller moving speed, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal, and when the terminal device has a larger moving speed, the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and the preset reference signal.

[0144] The above examples exemplarily list how to determine the quasi co-location information. In order for the reader to more clearly understand how to determine the quasi co-location information according to the state, the following Figure 3 The method of the embodiments of the present application is described in detail. Among them, Figure 3 The flowchart of the signal demodulation method of another embodiment of the present application is shown.

[0145] As Figure 3 shown, the method comprises:

[0146] S21: Obtain the state of the terminal device, and the state includes the moving speed.

[0147] In some embodiments, the step can specifically include: acquiring a detection value of a sensor in the terminal device, wherein the detection value is used to indicate the moving speed. The sensor can include a sensor for detecting speed, such as a displacement sensor, radar, a global positioning system (GPS), location-based services (LBS), and the like.

[0148] S22: determining whether the moving speed is less than or equal to a first preset value, if yes, performing S23, if no, performing S24.

[0149] Based on the above examples, the first preset value can be set based on requirements, experience, and experiments, and the like. For example, the first preset value can be set to a relatively small value, which is used to represent that the terminal device has a relatively small moving distance, or is used to represent that the terminal device has almost no movement (including that the terminal device is in a stationary state). That is, in the case that the terminal device has almost no movement, or in the case that the terminal device has a relatively small moving distance, S23 can be performed.

[0150] S23: the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and the reference signal, and S25 is performed.

[0151] The description of S23 can be referred to the above examples, which will not be repeated here.

[0152] S24: the quasi co-location information is quasi co-location information in a control resource set (CORESET) carried on a time slot group, and S25 is performed.

[0153] That is, in the embodiments of the present application, in the case that the moving speed is relatively small, or the terminal device has almost no movement, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and the reference signal, while in the case that the moving speed is relatively large, the quasi co-location information is quasi co-location information in the control resource set carried on the time slot group.

[0154] The quasi co-location information in the control resource set carried on the time slot group is quasi co-location information corresponding to a control resource pair with a smallest index.

[0155] In some embodiments, the moving speed and the determination of the quasi co-location information can be further subdivided.

[0156] For example, on the basis that the moving speed is greater than the first preset value, the moving speed is further compared with a second preset value, if the moving speed is less than the second preset value, the quasi co-location information is the quasi co-location information in the control resource set carried on the time slot group most recently received by the terminal device; if the moving speed is greater than or equal to the second preset value, the quasi co-location information is the quasi co-location information in the control resource set carried on the time slot group received by the terminal device in a preset time period.

[0157] If the moving speed is greater than the first preset value and less than the second preset value, it indicates that the moving speed of the terminal device is relatively slow. In the case that the moving speed of the terminal device is relatively slow, the time slot group most recently received by the terminal device can be determined, and the quasi co-location information can be determined as the quasi co-location information in the control resource set carried on the time slot group most recently received.

[0158] Specifically, if the time slot group includes at least one time slot, the at least one time slot is closest in time to the current downlink shared channel.

[0159] If the moving speed is greater than the first preset value and greater than or equal to the second preset value, it indicates that the moving speed of the terminal device is relatively fast. In the case that the moving speed of the terminal device is relatively fast, the time slot group received by the terminal device in a preset time period can be determined, and the quasi co-location information can be determined as the quasi co-location information in the control resource set carried on the time slot group received in the preset time period.

[0160] Specifically, if the time slot group includes at least two continuous time slots, the time slot group is closest in time to the current downlink shared channel, and the quasi co-location information is the normalized value of the quasi co-location information corresponding to the control resource with the smallest index in the control resource set of each time slot of the time slot group.

[0161] S25: receiving and demodulating the physical downlink shared channel according to the quasi co-location information.

[0162] In some embodiments, S25 can specifically include:

[0163] S251: determining the receiving direction of the signal according to the quasi co-location information.

[0164] S252: receiving and demodulating the physical downlink shared channel in the receiving direction.

[0165] To make the reader more clearly understand the scheme of the embodiments of the present application, especially the triggering condition of the embodiments of the present application, now the signal demodulation method of the embodiments of the present application will be described in detail. Figure 4 The signal demodulation method of the embodiments of the present application will be described in detail. Among them, Figure 4 The flowchart of the signal demodulation method of another embodiment of the present application.

[0166] As Figure 4As shown, the method includes:

[0167] S31: Receive downlink control information (DCI) sent by a network device.

[0168] For example, in Figure 1 In the application scenario shown, the mobile phone receives line control information sent by the base station.

[0169] S32: Determine an offset time for receiving and demodulating a physical downlink shared channel according to the downlink control information.

[0170] The downlink control information carries an offset time, and the offset time is used to represent the time difference between the current moment and the time when the physical downlink shared channel is received.

[0171] S33: Compare the offset time with a preset time threshold. If the offset time is less than the time threshold, execute S34; if the offset time is greater than or equal to the time threshold, return to S31.

[0172] Among them, the time threshold may be a network setting sent to the terminal device when the terminal device accesses the network device; the time threshold may also be carried in the downlink control information.

[0173] As an example, the time threshold is carried in the downlink control information. The offset time and the time threshold carried in the downlink control information may be the same or different. In particular, in the case of multi-transmitter / receiver point (TRP) transmission, the offset time and the time threshold are more likely to be different.

[0174] like Figure 5 As shown, when the terminal device receives downlink control information, it can determine the signal offset time when the terminal device receives the physical downlink shared channel based on the downlink control information, and can also determine the time threshold for receiving the signal of the physical downlink shared channel.

[0175] Combine Figure 5 It can be seen that the time threshold may be greater than the offset time. For example, if the offset time is 0.2 seconds and the time threshold is 0.5 seconds, since the quasi-co-location information in the downlink control information is for receiving and demodulating the physical downlink shared channel after 0.5 seconds, the terminal device cannot receive and demodulate the physical downlink shared channel at 0.2 seconds. Therefore, the solution of the embodiment of the present application can be used to solve this problem.

[0176] S34: determining whether transmission configuration indicator (TCI) information in the downlink control information is in an enabled state, if yes, performing S35-S37, if not, returning to S31.

[0177] The enabled state is also referred to as an excited state, which can be understood as a state of an "allow feeding signal", i.e., a state of the network device for allowing the signal to be sent to the terminal device.

[0178] S35: obtaining a state of the terminal device.

[0179] S36: determining quasi co-location information of the physical downlink shared channel according to the state.

[0180] S37: receiving and demodulating the physical downlink shared channel according to the quasi co-location information.

[0181] The description of S35-S37 can be referred to the description of the above examples, which will not be repeated here.

[0182] According to another aspect of the embodiments of the present application, the embodiments of the present application also provide a terminal device corresponding to the above method.

[0183] Please refer to Figure 6 , Figure 6 for a schematic diagram of the terminal device of the embodiments of the present application.

[0184] As Figure 6 shown, the terminal device comprises:

[0185] A determination module 11 is configured to determine quasi co-location information of a physical downlink shared channel according to a state of the terminal device.

[0186] A processing module 12 is configured to receive and demodulate the physical downlink shared channel according to the quasi co-location information.

[0187] The state is at least one of the following of the terminal device: a motion state, a moving speed, and a moving direction.

[0188] In some embodiments, the following at least one is further included:

[0189] When the terminal device is in a stationary state, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal.

[0190] When the terminal device is in a motion state, the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal.

[0191] When the moving speed is less than or equal to a first preset value, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal.

[0192] When the moving speed is greater than the first preset value, the quasi co-location information is not used to indicate quasi co-location between the physical downlink shared channel and a preset reference signal.

[0193] In some embodiments, the reference signal comprises at least one of:

[0194] a reference signal with the largest signal strength detected by the terminal device when receiving the reference signal;

[0195] a reference signal with the largest signal-to-interference-and-noise ratio detected by the terminal device when receiving the reference signal.

[0196] In some embodiments, when the moving speed is greater than the first preset value, further comprising:

[0197] the quasi co-location information is quasi co-location information corresponding to a control resource with a smallest index in a control resource set carried on a time slot group.

[0198] In some embodiments, further comprising at least one of:

[0199] the time slot group comprises at least one time slot, and the at least one time slot is closest in time to a current downlink shared channel;

[0200] the moving speed is greater than the first preset value and less than a second preset value, and the first preset value is less than the second preset value.

[0201] In some embodiments, further comprising at least one of:

[0202] the time slot group comprises at least two continuous time slots, the time slot group is closest in time to a current downlink shared channel, and the quasi co-location information is a normalized value of quasi co-location information corresponding to a control resource with a smallest index in a control resource set of each time slot of the time slot group;

[0203] the moving speed is greater than the first preset value and greater than or equal to a second preset value, and the first preset value is less than the second preset value.

[0204] In some embodiments, the processing module 12 is specifically configured to determine a receiving direction of a signal according to the quasi co-location information, and receive and demodulate the physical downlink shared channel in the receiving direction.

[0205] In combination with Figure 7 It can be seen that, in some embodiments, the terminal device further comprises:

[0206] The receiving module 14 is configured to receive the downlink control information sent by the network device.

[0207] The determining module 11 is further configured to determine an offset time of receiving and demodulating the physical downlink shared channel according to the downlink control information.

[0208] The obtaining module 13 is configured to obtain the state if the offset time is less than a preset time threshold.

[0209] In some embodiments, the determining module 12 is further configured to determine a state of transmission configuration indication information according to the downlink control information.

[0210] The obtaining module 13 is specifically configured to obtain the state if the state of the transmission configuration indication information is an enabled state.

[0211] According to another aspect of the embodiments of the present application, the embodiments of the present application further provide an electronic device, comprising a memory and a processor.

[0212] The memory is configured to store processor-executable instructions.

[0213] When the instructions in the memory are executed, the processor is configured to implement the method according to any one of the above embodiments.

[0214] Please refer to Figure 8 , Figure 8 for a structural schematic diagram of the electronic device according to the embodiments of the present application.

[0215] As Figure 8 shown, the electronic device comprises a memory and a processor, and can further comprise a communication interface and a bus, wherein the processor, the communication interface and the memory are connected through the bus; the processor is configured to execute the executable modules stored in the memory, such as computer programs.

[0216] The memory can contain a high-speed random access memory (RAM), and can also include a non-volatile memory, such as at least one disk memory. The communication interface can be wired or wireless, and can be used to realize the communication connection between the system network element and at least one other network element, and can use the Internet, a wide area network, a local area network, a metropolitan area network, etc.

[0217] The bus can be an ISA bus, a PCI bus, an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0218] The memory is configured to store a program, and the processor is configured to execute the program after receiving an execution instruction. The method disclosed in any of the embodiments of the present application can be applied to the processor or implemented by the processor.

[0219] The processor can be an integrated circuit chip having a processing capability of signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware in the processor or the instruction in the form of software. The processor mentioned above can be a general processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware decoding processor for execution, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

[0220] According to another aspect of the embodiments of the present application, the embodiments of the present application further provide a user equipment, comprising:

[0221] a memory, a processor;

[0222] The memory is configured to store a program, and the processor is configured to execute the program after receiving an execution instruction. The method disclosed in any of the embodiments of the present application can be applied to the processor or implemented by the processor.

[0223] For example, the user equipment is configured to execute the method as shown in Figure 2 、 Figure 3 and Figure 4 .

[0224] According to another aspect of the embodiments of the present application, the embodiments of the present application further provide a computer readable storage medium, and the computer readable storage medium stores computer execution instructions. The computer execution instructions are executed by the processor to implement the method as described in any of the above embodiments.

[0225] According to a further aspect of embodiments of the present application, the embodiments of the present application further provide a method for signal demodulation, the method being applied to a network device.

[0226] According to a further aspect of embodiments of the present application, the embodiments of the present application further provide a method for signal demodulation, the method being applied to a network device. Figure 9 The method comprises the following steps.

[0227] S41: generating downlink control information.

[0228] S42: transmitting the downlink control information, wherein the downlink control information is used to instruct the terminal device to receive and demodulate the physical downlink shared channel.

[0229] For example, in combination with the above examples, if the network device transmits the generated downlink control information to the terminal device, the downlink control information is used to instruct the terminal device to receive and demodulate the physical downlink shared channel, and embodiments about the terminal device receiving and demodulating the physical downlink shared channel according to the downlink control information can be seen from the above examples, such as the examples shown in Figure 2 , Figure 3 and Figure 4 , and details are not described herein.

[0230] According to a further aspect of embodiments of the present application, the embodiments of the present application further provide a network device.

[0231] According to a further aspect of embodiments of the present application, the embodiments of the present application further provide a network device. Figure 10 The network device comprises:

[0232] A generating module 21 is configured to generate downlink control information.

[0233] A transmitting module 22 is configured to transmit the downlink control information, wherein the downlink control information is used to instruct the terminal device to receive and demodulate the physical downlink shared channel.

[0234] According to a further aspect of embodiments of the present application, the embodiments of the present application further provide a system for signal demodulation, the system comprising:

[0235] The terminal device as shown in Figure 9 ;

[0236] The network device as shown in Figure 10 .

[0237] It should be understood by the reader that the use of the terms "an embodiment" or "embodiments", "an example" or "examples", "a specific example" or "specific examples", or "some examples" in the description above, is intended to convey that the particular feature, structure, or characteristic described is included in at least one embodiment or example of the present application. It is not intended to convey that the feature, structure, or characteristic is essential to each and every embodiment or example of the present application. Furthermore, it is possible that the described feature, structure, or characteristic is not included in some embodiments or examples of the present application. In addition, it is possible that the described feature, structure, or characteristic is included in some embodiments or examples of the present application, but not in other embodiments or examples of the present application.

[0238] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described apparatus and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0239] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other manners. For example, the apparatus embodiments described above are merely illustrative, for example, the division of units is merely a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0240] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiments of the present application.

[0241] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present alone, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0242] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or say the part of the prior art that contributes to the present application, or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0243] It should also be understood that, in the embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0244] It should be understood that, although the steps in the flowchart in the above-mentioned embodiments are displayed in sequence according to the arrows, these steps are not necessarily executed in sequence according to the arrows. Unless otherwise stated herein, the execution of these steps has no strict order limitation, and they can be executed in other orders. Moreover, at least part of the steps in the figure can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order is not necessarily sequential, but can be alternately executed with other steps or sub-steps or stages of other steps.

[0245] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A signal demodulation method, characterized in that: The method is applied to a terminal device and comprises the following steps: S21. Acquire the status of the terminal device, where the status includes a moving speed; S22, determining whether the moving speed is less than or equal to a first preset value, if so, executing S23, if not, executing S24; S23, the quasi co-location information is used to indicate that the physical downlink shared channel and the reference signal are quasi co-located, and S25 is executed; S24, the quasi-co-location information is the quasi-co-location information corresponding to the control resource with the smallest index in the control resource set carried by the time slot group, and S25 is executed; S25. Receive and demodulate the physical downlink shared channel according to the quasi co-location information; When the moving speed is greater than the first preset value and less than a second preset value, wherein the first preset value is less than the second preset value, the quasi-co-location information is quasi-co-location information corresponding to a control resource with a minimum index in a control resource set carried by a time slot group, the time slot group includes at least one time slot, and the at least one time slot is closest in time to a current downlink shared channel; When the moving speed is greater than the first preset value and greater than or equal to a second preset value, wherein the first preset value is less than the second preset value, the quasi-co-location information is a normalized value of the quasi-co-location information corresponding to the control resource with the smallest index in the set of control resources of each time slot of the time slot group, the time slot group includes at least two consecutive time slots, and the time slot group is closest in time to the current downlink shared channel; Before the step S21, the method further includes: Receive downlink control information sent by network equipment; determining, according to the downlink control information, an offset time for receiving and demodulating the physical downlink shared channel; If the offset time is less than a preset time threshold, the state is acquired.

2. The method according to claim 1, characterized in that The reference signal includes at least one of the following: The reference signal with the greatest signal strength detected by the terminal device when receiving the reference signal; The terminal device detects a reference signal with a maximum signal-to-interference-plus-noise ratio when receiving the reference signal.

3. The method according to claim 1 or 2, characterized in that The step S25 further includes: determining a signal receiving direction according to the quasi co-location information; In the receiving direction, the physical downlink shared channel is received and demodulated.

4. The method according to claim 1, wherein Before the step S21, the method further includes: determining a status of transmission configuration indication information according to the downlink control information; If the state of the transmission configuration indication information is an enabled state, the state is acquired.

5. A signal demodulation method, characterized in that: The method is applied to a network device and comprises the following steps: S41: Generate downlink control information; S42: Send downlink control information, where the downlink control information is used to instruct the terminal device to receive and demodulate the physical downlink shared channel according to quasi-co-location information of the physical downlink shared channel, where the quasi-co-location information is determined according to a state of the terminal device; the state includes a moving speed; When the moving speed is greater than a first preset value and less than a second preset value, wherein the first preset value is less than the second preset value, the quasi-co-location information is quasi-co-location information corresponding to a control resource with a minimum index in a control resource set carried by a time slot group, the time slot group includes at least one time slot, and the at least one time slot is closest in time to a current downlink shared channel; When the moving speed is greater than the first preset value and greater than or equal to a second preset value, wherein the first preset value is less than the second preset value, the quasi-co-location information is a normalized value of the quasi-co-location information corresponding to the control resource with the smallest index in the set of control resources of each time slot of the time slot group, the time slot group includes at least two consecutive time slots, and the time slot group is closest in time to the current downlink shared channel; The downlink control information carries an offset time and a preset time threshold, so that the terminal device: determines the offset time for receiving and demodulating the physical downlink shared channel according to the downlink control information; and obtains the state if the offset time is less than the preset time threshold.

6. A user equipment, characterized in that include: Memory, processor; The memory is used to store instructions executable by the processor, wherein when the processor executes the instructions in the memory, the method according to any one of claims 1 to 4 is implemented.

7. A network device, characterized in that: include: A generating module, configured to generate downlink control information; a sending module, configured to send downlink control information, wherein the downlink control information is used to instruct a terminal device to receive and demodulate a physical downlink shared channel according to quasi-co-location information of the physical downlink shared channel, wherein the quasi-co-location information is determined according to a state of the terminal device; the state includes a moving speed; When the moving speed is greater than a first preset value and less than a second preset value, wherein the first preset value is less than the second preset value, the quasi-co-location information is quasi-co-location information corresponding to a control resource with a minimum index in a control resource set carried by a time slot group, the time slot group includes at least one time slot, and the at least one time slot is closest in time to a current downlink shared channel; When the moving speed is greater than the first preset value and greater than or equal to a second preset value, wherein the first preset value is less than the second preset value, the quasi-co-location information is a normalized value of the quasi-co-location information corresponding to the control resource with the smallest index in the set of control resources of each time slot of the time slot group, the time slot group includes at least two consecutive time slots, and the time slot group is closest in time to the current downlink shared channel; The downlink control information carries an offset time and a preset time threshold, so that the terminal device: determines the offset time for receiving and demodulating the physical downlink shared channel according to the downlink control information; and obtains the state if the offset time is less than the preset time threshold.

8. A signal demodulation system, characterized in that: include: At least one user equipment according to claim 6 and at least one network equipment according to claim 7.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which are used to implement the method according to any one of claims 1 to 4 or claim 5 when executed by a processor.

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