CN115669159A

CN115669159A - Method, apparatus, system and storage medium for signal demodulation

Info

Publication number: CN115669159A
Application number: CN202080101254.6A
Authority: CN
Inventors: 杜冬阳
Original assignee: Shenzhen Transsion Holdings Co Ltd
Current assignee: Shenzhen Transsion Holdings Co Ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2023-01-31
Also published as: WO2021237476A1

Abstract

The present application provides a method, apparatus, system and storage medium for signal demodulation, comprising: the method comprises the steps of determining quasi-co-location information of a physical downlink shared channel according to the state of terminal equipment, receiving and demodulating the physical downlink shared channel according to the quasi-co-location information, and flexibly and accurately determining the quasi-co-location information corresponding to the physical downlink shared channel by determining the quasi-co-location information based on the state, so that when the physical downlink shared channel is received and demodulated through the quasi-co-location information, the technical effects of reliability and accuracy of demodulation can be improved.

Description

Method, apparatus, system and storage medium for signal demodulation

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, a device, a system, and a storage medium for signal demodulation.

Background

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 becomes a problem to be solved, and in order to ensure the effectiveness of data transmission between the terminal device and the network device, it is critical to demodulate a signal received from a Physical Downlink Shared Channel (PDSCH).

A general network device transmits a Synchronization Signal (SS) and a Physical Broadcast Channel (PBCH) to a user equipment, and transmits control information on the Physical Broadcast Channel, and a terminal device can perform demodulation according to the Synchronization Signal and the control information.

However, in the process of implementing the present application, the inventors found that at least the following problems exist: the state of the terminal device (such as the mobile situation) is not considered, so that the physical downlink shared channel cannot be accurately received and demodulated.

The foregoing description is provided for general background information and is not admitted to be prior art.

Disclosure of Invention

The application provides a method, equipment, a system and a storage medium for signal demodulation, which are used for solving the problem that a physical downlink shared channel cannot be accurately received and demodulated.

In one aspect, an embodiment of the present application provides a method for signal demodulation, where the method includes the following steps:

s11, determining quasi co-location information of a physical downlink shared channel according to the state of the terminal equipment;

and S12, receiving and demodulating the physical downlink shared channel according to the quasi-co-location information.

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

In some embodiments, further comprising at least one of:

when the terminal equipment is in a static state, 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 motion state, 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 less than or equal to a first preset value, 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 greater than the first preset value, the quasi-co-location information is not used for indicating quasi-co-location between the physical downlink shared channel and a preset reference signal.

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

the reference signal with the maximum received reference signal strength detected by the terminal equipment is obtained;

and the reference signal with the largest signal-to-interference-and-noise ratio of the received reference signal detected by the terminal equipment is obtained.

In some embodiments, when the moving speed is greater than the first preset value, the method further includes:

the quasi co-location information is quasi co-location information corresponding to the control resource with the minimum index in the control resource set carried on the time slot group.

In some embodiments, further comprising at least one of:

the time slot group comprises at least one time slot which is closest to the current downlink shared channel in time;

the moving speed is greater than the first preset value and smaller than a second preset value, wherein the first preset value is smaller than the second preset value.

In some embodiments, further comprising at least one of:

the time slot group comprises at least two continuous 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 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;

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 smaller than the second preset value.

In some embodiments, the S12 step further includes:

determining the receiving direction of the signal according to the quasi co-location information;

and receiving and demodulating the physical downlink shared channel in the receiving direction.

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

receiving downlink control information sent by network equipment;

determining offset time for receiving and demodulating the physical downlink shared channel according to the downlink control information;

and if the offset time is smaller than a preset time threshold, acquiring the state.

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

determining the state of transmission configuration indication information according to the downlink control information;

and if the state of the transmission configuration indication information is an enabling state, acquiring the state.

On the other hand, an embodiment of the present application further provides a terminal device, where the terminal device includes:

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

and the processing module is used for receiving and demodulating the physical downlink shared channel according to the quasi-co-location information.

In some embodiments, further comprising at least one of:

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

the reference signal with the maximum strength of the received reference signal detected by the terminal equipment is obtained;

In some embodiments, further comprising at least one of:

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.

In another aspect, an embodiment of the present application further provides a user equipment, including:

a memory, a processor;

the memory is used for storing the processor executable instructions, wherein the processor executes the instructions in the memory to realize the method of any one of the above embodiments.

In some embodiments, the terminal device further comprises:

the receiving module is used for receiving downlink control information sent by the network equipment;

the determining module is further configured to determine, according to the downlink control information, offset time for receiving and demodulating the physical downlink shared channel;

and the obtaining module is used for obtaining the state if the offset time is less than a preset time threshold.

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

the obtaining module is specifically configured to obtain the status if the status of the transmission configuration indication information is an enabled status.

In another aspect, an embodiment of the present application further provides a method for signal demodulation, where the method is applied to a network device, and the method includes the following steps:

s41: generating downlink control information;

s42: and sending downlink control information, wherein the downlink control information is used for indicating the terminal equipment to receive and demodulate the physical downlink shared channel.

In another aspect, an embodiment of the present application further provides an electronic device, including: a memory, a processor;

the memory is to store the processor-executable instructions;

wherein the method of any of the above embodiments is implemented when the processor executes the instructions in the memory.

In another aspect, the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored, and when executed by a processor, the computer-executable instructions are used to implement the method according to any one of the above embodiments.

In another aspect, an embodiment of the present application further provides a network device, where the network device includes:

a generation module, configured to generate downlink control information;

and the sending module is used for sending downlink control information, wherein the downlink control information is used for indicating the terminal equipment to receive and demodulate the physical downlink shared channel.

In another aspect, an embodiment of the present application further provides a system for signal demodulation, where the system includes:

the terminal device as in any one of the above embodiments;

a network device as described in the above embodiments.

The present application provides a method, apparatus, system and storage medium for signal demodulation, comprising: the quasi-co-location information of the physical downlink shared channel is determined according to the state of the terminal equipment, the received and demodulated physical downlink shared channel is determined by aligning the co-location information based on the state according to the quasi-co-location information, and the quasi-co-location information corresponding to the physical downlink shared channel can be flexibly and accurately determined, so that when the physical downlink shared channel is received and demodulated through the quasi-co-location information, the technical effects of reliability and accuracy of demodulation can be improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic view of a signal demodulation method according to an embodiment of the present application;

FIG. 2 is a flow chart illustrating a method for signal demodulation according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a signal demodulation method according to another embodiment of the present application;

fig. 4 is a flowchart illustrating a method for demodulating a signal according to another embodiment of the present application;

FIG. 5 is a schematic time offset diagram according to an embodiment of the present application;

FIG. 6 is a schematic diagram of an apparatus for signal demodulation according to an embodiment of the present application;

FIG. 7 is a diagram illustrating an apparatus for signal demodulation according to another embodiment of the present application;

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 9 is a flowchart illustrating a method for demodulating a signal according to another embodiment of the present application;

fig. 10 is a schematic diagram of a network device according to an embodiment of the present application.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The method for demodulating signals according to the embodiment of the present application can be applied to the application scenario shown in fig. 1.

Fig. 1 may be understood as a system for signal demodulation, which includes a network device and a terminal device. In the application scenario shown in fig. 1, the terminal device is a mobile phone 100, and the network device is a base station 200.

A communication link can be established between the handset 100 and the base station 200, and the handset 100 can perform data transmission with the base station 200 based on the communication link.

It should be noted that fig. 1 only shows one of the terminal devices by way of example, and the terminal devices may also include a desktop computer, a notebook computer, an iPad, a smart band, and the like. The network device may include a router, a bridge, and the like, in addition to the base station shown in fig. 1.

Specifically, the application scenario shown in fig. 1 may be applicable to different network systems, for example, may be applicable to network systems such as Global System for 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 (Long Term Evolution, LTE), and 5G. Optionally, the communication system may be a system in a scenario of high-reliability Low-Latency Communications (URLLC) transmission in a 5G communication system.

Therefore, optionally, the Base Station may be a Base Transceiver Station (BTS) and/or a Base Station Controller in GSM or CDMA, a Base Station (NodeB, NB) and/or a Radio Network Controller (RNC) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, or a relay Station or an access point, or a Base Station (gNB) in a 5G Network, and the application is not limited herein.

The terminal device may be a wireless terminal or a wired terminal. A wireless terminal may refer to a device that provides voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more core Network devices via a Radio Access Network (RAN), and exchange languages and/or data with the RAN. For another example, the Wireless terminal may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and the like. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein. Optionally, the user equipment may also be a smart watch, a tablet computer, or the like.

The network device sends the synchronization signal and the physical broadcast channel to the terminal device, 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.

The above scheme does not consider the state of the terminal device (such as the moving situation), which results in that the signal carried by the physical downlink shared channel cannot be accurately received, and thus the demodulation of the signal carried by the physical downlink shared channel cannot be realized.

For example, in the application scenario shown in fig. 1, 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, and if the mobile phone receives and demodulates the signal sent by the base station in the changed direction, there may be a problem that the received signal is inaccurate.

In order to solve the above technical problems, the inventors of the present application, after having conducted creative efforts, have obtained the inventive concept of the embodiments of the present application: and receiving and demodulating the signal carried by the physical downlink shared channel based on the state of the terminal equipment.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

According to an aspect of the embodiments of the present application, a method for signal demodulation is provided, and the method is applied to a terminal device.

Referring to fig. 2, fig. 2 is a flowchart illustrating a signal demodulation method according to an embodiment of the present application.

As shown in fig. 2, the method includes:

s21: and determining the quasi co-location information of the physical downlink shared channel according to the state of the terminal equipment.

The execution main body of the embodiment of the application can be a terminal device used for data transmission with a network device, for example, a user terminal, and the user terminal includes a mobile phone, an iPad, an intelligent bracelet, a desktop computer, a notebook computer, a vehicle-mounted terminal, and the like. For example, in the application scenario shown in fig. 1, the terminal device is a mobile phone.

The state is used to represent the relevant information of the motion and/or the rest of the terminal device, that is, if the state is the relevant information for representing the motion of the terminal device, the state may be referred to as a motion state, and if the state is the relevant information for representing the rest of the terminal device, the state may be referred to as a rest state. Specifically, when the terminal device is in the motion state, the motion state may be used to represent relevant information that at least one of a displacement, a speed, and an angle of the terminal device changes, such as a moving speed and a moving direction of the terminal device.

The Quasi-Co-Location QCL (Quasi Co-Location) information is used to determine a direction of the physical downlink shared channel, and after the direction of the physical downlink shared channel is determined, the physical downlink shared channel may be received and demodulated based on the determined direction.

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 may be different, such as the angle and distance of the terminal device relative to the network device may be changed. The angle referred to herein may be used to characterize the angle between the antenna of the terminal device and the beam transmitted by the antenna of the network device.

In the embodiment of the application, the co-location information is determined according to the state alignment, and the difference of the relative position information between the terminal equipment and the network equipment caused by different states of the terminal equipment is fully considered, so that the technical effect of flexibly determining the co-location information can be realized.

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

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

Based on the above analysis, an embodiment of the present application provides a method for signal demodulation, where the method includes: the method comprises the steps of determining quasi-co-location information of a physical downlink shared channel according to the state of terminal equipment, receiving and demodulating the physical downlink shared channel according to the quasi-co-location information, and flexibly and accurately determining the quasi-co-location information corresponding to the physical downlink shared channel by determining the quasi-co-location information based on the state, so that when the physical downlink shared channel is received and demodulated through the quasi-co-location information, the technical effects of reliability and accuracy of demodulation can be improved.

In some embodiments, the quasi co-location information is used to indicate quasi co-location between the physical downlink shared channel and a predetermined Reference Signal (RS).

The reference signal may be a reference signal configured and broadcasted by the network device when the terminal device accesses the network device; the reference signal may also be a reference signal configured and broadcast periodically or aperiodically by the network device after the terminal device accesses the network device.

The Reference Signal includes a Synchronization Signal Block SSB (Synchronization Signal Block) and a Channel State Information Reference Signal CSI-RS (Channel State Information Reference Signal).

In some embodiments, the reference signal is a reference signal with the largest received reference signal strength and/or the largest signal to interference plus noise ratio detected by the terminal device.

The terminal equipment can detect the signal intensity when receiving the reference signal and select the reference signal with the maximum signal intensity; the terminal equipment can also detect the signal-to-interference-and-noise ratio when receiving the reference signal and select the reference signal with the largest signal-to-interference-and-noise ratio. In the embodiment of the application, the maximum strength of the received reference signal and/or the signal-to-interference-and-noise ratio can be selected, and the quasi-co-location of the physical downlink shared channel and the reference signal with the maximum signal-to-noise ratio is determined, so that the accuracy and the reliability of the determined quasi-co-location information are realized.

In some embodiments, the quasi co-location information is quasi co-location information in a set of control resources carried on a group of timeslots.

In some embodiments, 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 the timeslot group.

In some embodiments, the set of time slots includes at least one time slot that is closest in time to the current downlink shared channel.

In some embodiments, the timeslot set includes at least two consecutive timeslots, the timeslot set is closest to the current downlink shared channel in time, and 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 each timeslot control resource set of the timeslot set.

Wherein the normalized value may be at least one of an average value, a maximum value, and a minimum value.

For example, when the normalized value is an average value, the quasi-co-location information corresponding to the control resource with the smallest 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.

If the normalized value is the maximum value, the quasi co-location information corresponding to the control resource with the smallest index is selected from each time slot, and the quasi co-location information with the largest value of the quasi co-location information is selected from the selected quasi co-location information to be determined as the quasi co-location information.

If the normalized value is the minimum value, the quasi co-location information corresponding to the control resource with the minimum index is selected from each time slot, and the quasi co-location information with the minimum value of the quasi co-location information is selected from the selected quasi co-location information to be determined as the quasi co-location information.

For another example, when the normalized value is the average value and the maximum value, the quasi co-location information corresponding to the control resource with the smallest index is selected from each time slot, the selected quasi co-location information is averaged to obtain the average value, the quasi co-location information corresponding to the control resource with the smallest index is selected from each time slot, the quasi co-location information with the maximum value is selected from the selected quasi co-location information, 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.

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

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

If the normalization value is the average value, the maximum value, and the minimum value, the quasi co-location information corresponding to the control resource of the minimum index is selected from each time slot, the average value is obtained by averaging the selected quasi co-location information, the quasi co-location information corresponding to the control resource of the minimum index is selected from each time slot, the quasi co-location information of the maximum value is selected from the selected quasi co-location information, the quasi co-location information corresponding to the control resource of the minimum index is selected from each time slot, the quasi co-location information of the minimum value is selected from the selected quasi co-location information, and the average value is determined as the quasi co-location information, or the quasi co-location information of the maximum value is determined as the quasi co-location information, or the quasi co-location information of the minimum value is determined as the quasi co-location information.

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

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

For the description of the reference signal, reference may be made to the above example, which is not repeated herein.

That is to say, in the embodiment of the present application, the relationship between the quasi-co-location information and the reference signal may be determined based on whether the terminal device is in a static state, and specifically, when the terminal device is in the static state, the quasi-co-location information is used to indicate that the physical downlink shared channel is quasi-co-located with the preset reference signal, and when the terminal device is in a moving state (i.e., a non-static state), the quasi-co-location information is not used to indicate that the physical downlink shared channel is quasi-co-located with the preset reference signal.

In some embodiments, the quasi-co-location information is used to indicate 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.

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

The first preset value may be set based on requirements, experience, experiments, and the like.

That is to say, in the embodiment of the present application, the relationship between the quasi co-location information and the reference signal may be determined based on the moving speed of the terminal device, and specifically, when the moving speed of the terminal device is low, the quasi co-location information is used to indicate that the physical downlink shared channel and the preset reference signal are quasi co-located, and when the moving speed of the terminal device is high, the quasi co-location information is not used to indicate that the physical downlink shared channel and the preset reference signal are quasi co-located.

The above example exemplarily lists how to determine the quasi co-location information, and in order to make the reader more clearly understand how to determine the quasi co-location information according to the state, the method of the embodiment of the present application will be explained in detail with reference to fig. 3. Fig. 3 is a schematic flow chart of a signal demodulation method according to another embodiment of the present application.

As shown in fig. 3, the method includes:

s21: and acquiring the state of the terminal equipment, wherein the state comprises the moving speed.

In some embodiments, the step may specifically include: a detection value of a sensor in a terminal device is acquired, wherein the detection value is indicative of a moving speed. And the sensor may include a sensor for detecting a speed, a displacement sensor, a radar, a Global Positioning System (GPS), a Location Based Service (LBS), and the like.

S22: and judging whether the moving speed is less than or equal to a first preset value, if so, executing S23, and if not, executing S24.

Based on the above examples, the first preset value may be set based on needs, experience, experiments, and the like. For example, the first preset value may be set to a relatively small value to indicate that the moving distance of the terminal device is relatively small, or to indicate that the terminal device has hardly moved (including that the terminal device is in a stationary state). That is, in the case where the terminal device has hardly moved, or in the case where the distance over which the terminal device moves is relatively small, S23 may be performed.

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.

For the description of S23, reference may be made to the above example, which is not described herein again.

S24: the quasi co-location information is quasi co-location information in a Control Resource Set (CORESET) carried on the timeslot group, and S25 is executed.

That is to say, in the embodiment of the present application, in the case that the moving speed is relatively small, or the terminal device hardly moves, the quasi-co-location information is used to indicate quasi-co-location between the physical downlink shared channel and the reference signal, and 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 timeslot group.

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 on the time slot group.

In some embodiments, the movement speed and the determination of quasi co-location information may be further subdivided.

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

If the moving speed is greater than the first preset value and less than the second preset value, the moving speed of the terminal device is relatively slow. Under the condition that the moving speed of the terminal equipment is relatively low, the time slot group received by the terminal equipment recently 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 recently.

Specifically, if the timeslot group includes at least one timeslot, the at least one timeslot is closest in time to the current downlink shared channel.

If the moving speed is greater than the first preset value and greater than or equal to the second preset value, the moving speed of the terminal device is relatively high. Under the condition that the moving speed of the terminal equipment is relatively high, the time slot group received by the terminal equipment in the 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.

Specifically, if the timeslot group includes at least two consecutive timeslots, the timeslot group is closest to the current downlink shared channel in terms of time, and the quasi co-location information is a normalized value of the quasi co-location information corresponding to the control resource having the smallest index in the control resource set of each timeslot of the timeslot group.

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

In some embodiments, S25 may specifically include:

s251: and determining the receiving direction of the signal according to the quasi-co-location information.

S252: and in the receiving direction, receiving and demodulating the physical downlink shared channel.

In order to make the reader more clearly understand the scheme of the embodiment of the present application, especially the trigger condition of the embodiment of the present application, a method for demodulating a signal according to the embodiment of the present application will be described in detail with reference to fig. 4. Fig. 4 is a flowchart illustrating a signal demodulation method according to another embodiment of the present application.

As shown in fig. 4, the method includes:

s31: receiving Downlink Control Information (DCI) sent by a network device.

For example, in the application scenario shown in fig. 1, the mobile phone receives the row control information sent by the base station.

S32: and determining the offset time for receiving and demodulating the physical downlink shared channel according to the downlink control information.

The downlink control information carries offset time, and the offset time is used for representing a time difference between the current time and the time of receiving the physical downlink shared channel.

S33: judging the size between the offset time and a preset time threshold, if the offset time is less than the time threshold, executing S34, and if the offset time is greater than or equal to the time threshold, returning to S31.

The time threshold may be that the network setting is 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.

Now, the exemplary description is given by taking the time threshold as being carried in the downlink control information, and the offset time and the time threshold carried in the downlink control information may be the same or different. Especially in the case of multiple transmission point (Tx/Rx point, TRP) transmission, the probability that the offset time and the time threshold are not the same is higher.

As shown in fig. 5, when the terminal device receives the downlink control information, the offset time of the terminal device receiving the signal of the physical downlink shared channel may be determined based on the downlink control information, and the time threshold of receiving the signal of the physical downlink shared channel may also be determined.

As can be appreciated in conjunction with fig. 5, 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-located information in the downlink control information is received and demodulated after 0.5 seconds, the terminal device cannot receive and demodulate the physical downlink shared channel at 0.2 seconds, and therefore the problem can be solved by adopting the scheme of the embodiment of the present application.

S34: whether Transmission Configuration Indicator (TCI) information in the downlink control information is in an enabled state is determined, if yes, S35 to S37 are executed, and if not, the process returns to S31.

The enable state is also called an excitation state, and may be understood as a state of "allowing a feeding signal", that is, a state of allowing the network device to transmit a signal to the terminal device.

S35: and acquiring the state of the terminal equipment.

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

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

For the descriptions of S35 to S37, reference may be made to the description of the above example, which is not described herein again.

According to another aspect of the embodiment of the application, the embodiment of the application further provides a terminal device corresponding to the method.

Referring to fig. 6, fig. 6 is a schematic diagram of a terminal device according to an embodiment of the present application.

As shown in fig. 6, the terminal device includes:

a determining module 11, configured to determine quasi co-location information of a physical downlink shared channel according to a state of a terminal device;

and a processing module 12, configured to receive and demodulate the physical downlink shared channel according to the quasi-co-location information.

The state is at least one of the following of the terminal equipment: motion state, moving speed, moving direction.

In some embodiments, further comprising at least one of:

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

In some embodiments, further comprising at least one of:

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

As can be seen in fig. 7, in some embodiments, the terminal device further includes:

a receiving module 14, configured to receive downlink control information sent by a network device;

the determining module 11 is further configured to determine, according to the downlink control information, an offset time for receiving and demodulating the physical downlink shared channel;

an obtaining module 13, configured to obtain the state if the offset time is smaller than a preset time threshold.

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;

the obtaining module 13 is specifically configured to, if the state of the transmission configuration indication information is an enabled state, obtain the state.

According to another aspect of the embodiments of the present application, there is also provided an electronic device, including: a memory, a processor;

a memory for storing processor-executable instructions;

wherein, when executing the instructions in the memory, the processor is configured to implement the method of any of the embodiments above.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

As shown in fig. 8, the electronic device includes a memory and a processor, and the electronic device may further include a communication interface and a bus, wherein the processor, the communication interface, and the memory are connected by the bus; the processor is used to execute executable modules, such as computer programs, stored in the memory.

The Memory may include a high-speed Random Access Memory (RAM) and may also include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Via at least one communication interface, which may be wired or wireless), the communication connection between the network element of the system and at least one other network element may be implemented using the internet, a wide area network, a local network, a metropolitan area network, etc.

The bus may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.

The memory is used for storing a program, and the processor executes the program after receiving an execution instruction.

The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The Processor may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

According to another aspect of the embodiments of the present application, there is also provided a user equipment, including:

a memory, a processor;

For example, the user equipment is configured to perform the methods shown in fig. 2, 3 and 4.

According to another aspect of the embodiments of the present application, there is also provided a computer-readable storage medium having stored therein computer-executable instructions, which when executed by a processor, are configured to implement the method according to any one of the embodiments above.

According to another aspect of the embodiments of the present application, there is also provided a method for signal demodulation, which is applied to a network device.

Referring to fig. 9, the method includes the following steps:

s41: generating downlink control information;

For example, in combination with the above example, it can be known that, if the network device sends 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 for an embodiment in which the terminal device receives and demodulates the physical downlink shared channel according to the downlink control information, reference may be made to the above example, as shown in fig. 2, fig. 3, and fig. 4, which is not described again here.

According to another aspect of the embodiments of the present application, a network device is also provided.

Referring to fig. 10, the network device includes:

a generating module 21, configured to generate downlink control information;

a sending module 22, configured to send downlink control information, where the downlink control information is used to instruct a terminal device to receive and demodulate a physical downlink shared channel.

According to another aspect of the embodiments of the present application, there is also provided a system for signal demodulation, the system including:

a terminal device as shown in fig. 9;

such as the network device shown in fig. 10.

The reader should understand that in the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

It should also be understood that, in the embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

It should be understood that, although the respective steps in the flowcharts in the above-described embodiments are sequentially shown as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or at least partially with respect to other steps or sub-steps of other steps.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for signal demodulation, the method being applied to a terminal device, the method comprising the steps of:

s11, determining quasi co-location information of a physical downlink shared channel according to the state of the terminal equipment;

and S12, receiving and demodulating the physical downlink shared channel according to the quasi-co-location information.
The method of claim 1, wherein the status is at least one of the following for the terminal device: motion state, moving speed, moving direction.
The method of claim 2, further comprising at least one of:

when the terminal equipment is in a static state, 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 equipment is in a motion state, 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 less than or equal to a first preset value, 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 greater than the first preset value, the quasi co-location information is not used for indicating quasi co-location between the physical downlink shared channel and a preset reference signal.
The method of claim 3, wherein the reference signal comprises at least one of:

the reference signal with the maximum received reference signal strength detected by the terminal equipment is obtained;

and the reference signal with the largest signal-to-interference-and-noise ratio of the received reference signal detected by the terminal equipment is obtained.
The method of claim 3, wherein when the moving speed is greater than the first preset value, further comprising:

the quasi co-location information is quasi co-location information corresponding to the control resource with the minimum index in the control resource set carried on the time slot group.
The method of claim 5, further comprising at least one of:

the time slot group comprises at least one time slot which is closest to the current downlink shared channel in time;

the moving speed is greater than the first preset value and smaller than a second preset value, wherein the first preset value is smaller than the second preset value.
The method of claim 5, further comprising at least one of:

the time slot group comprises at least two continuous 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 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;

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 smaller than the second preset value.
The method according to any one of claims 1 to 7, wherein the step S12 further comprises:

determining the receiving direction of the signal according to the quasi co-location information;

and receiving and demodulating the physical downlink shared channel in the receiving direction.
The method according to any one of claims 1-7, wherein before the step S11, the method further comprises:

receiving downlink control information sent by network equipment;

determining offset time for receiving and demodulating the physical downlink shared channel according to the downlink control information;

and if the offset time is less than a preset time threshold value, acquiring the state.
The method of claim 9, wherein prior to the step of S11, the method further comprises:

determining the state of transmission configuration indication information according to the downlink control information;

and if the state of the transmission configuration indication information is an enabling state, acquiring the state.
A method for signal demodulation, the method being applied to a network device, the method comprising the steps of:

s41: generating downlink control information;

s42: and sending downlink control information, wherein the downlink control information is used for indicating the terminal equipment to receive and demodulate the physical downlink shared channel.
A user device, comprising:

a memory, a processor;

the memory is for storing the processor-executable instructions, wherein the processor, when executing the instructions in the memory, implements the method of any of claims 1-10.
A network device, comprising:

a generation module, configured to generate downlink control information;

and the sending module is used for sending downlink control information, wherein the downlink control information is used for indicating the terminal equipment to receive and demodulate the physical downlink shared channel.
A system for demodulating a signal, comprising:

at least one user equipment according to claim 12 and at least one network equipment according to claim 13.
A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, are configured to implement the method of any one of claims 1 to 10 or claim 11.