WO2020249059A1

WO2020249059A1 - Control channel detection method and apparatus applied to internet of things, and storage medium

Info

Publication number: WO2020249059A1
Application number: PCT/CN2020/095712
Authority: WO
Inventors: 吕叶青; 刘宏举; 吴风炎
Original assignee: 海信集团有限公司
Priority date: 2019-06-14
Filing date: 2020-06-12
Publication date: 2020-12-17
Also published as: CN112087790A; CN112087790B

Abstract

Disclosed are a control channel detection method and apparatus applied to the Internet of things, and a storage medium. A base station groups, according to feature information of terminals in a serving cell, the terminals in the serving cell, and allocates a wake-up signal for each terminal group; and during detection, each terminal firstly extracts the wake-up signal sent by the base station, and determines, depending on whether a self-adopted wake-up signal is extracted, whether the terminal requires blind detection. Therefore, by means of grouping the terminals, the terminals, that have not extracted self-adopted wake-up signals, do not need to be subjected to blind detection, thereby effectively reducing the power consumed for blind detection on the terminals, that do not need to receive data, in the serving cell.

Description

Control channel detection method, device and storage medium applied to internet of things

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910516492.2, and the invention title is "Control channel detection method, device and storage medium applied to the Internet of Things" on June 14, 2019, and its entire content Incorporated in this application by reference.

Technical field

This application relates to the field of the Internet of Things, and in particular to a control channel detection method, device and storage medium applied to the Internet of Things.

Background technique

The current Internet of Things technology is widely used. For example, the cellular Internet of Things technology is widely used in Internet of Things scenarios such as smart meter reading and environmental monitoring due to its low power consumption and wide coverage.

When a certain Internet of Things terminal is in the connected state, because the Internet of Things terminal is not sure whether there is its own control information in the downlink data, and the size of the control information block and the time-frequency position occupied by it, it is necessary to control the downlink control channel ( Blind detection is performed on the area occupied by PDCCH, physical downlink control channel. If the control information of the device is detected, the data will be received according to the time-frequency position indicated by the control information; if the control information of the device is not detected, it will wait for the next detection cycle for blind detection.

Due to the infrequent data transmission of IoT devices, for an IoT terminal, its control information can be detected less frequently in all blind detections. Therefore, when the terminal is in the detection period, it needs to perform blind detection on the downlink control channel, thereby increasing power consumption and low resource utilization.

Summary of the invention

The embodiments of the present application provide a control channel detection method, device and storage medium applied to the Internet of Things, to solve the problem that in the prior art, when the terminal is in the detection period, the downlink control channel needs to be blindly detected, thereby reducing power consumption. Increase the problem of low resource utilization.

In the first aspect, an embodiment of the present application provides a control channel detection method applied to the Internet of Things, and the method includes:

The terminal extracts the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal; wherein the terminal belongs to a terminal group, which is the base station grouping according to the characteristic information of the terminals in the service cell of the terminal Obtained; the wake-up signals of the same terminal group and their time-frequency positions are the same;

If the wake-up signal used by the terminal is extracted, blind detection is performed on the downlink control channel.

In a second aspect, an embodiment of the present application provides a control channel detection method applied to the Internet of Things, the method including:

For each terminal to receive data, the base station determines the terminal group in the serving cell where the terminal is located; wherein the terminal group is obtained by the base station grouping according to the characteristic information of the terminal in the serving cell of the terminal; wake-up of the same terminal group The signal and its time-frequency position are the same;

Modulate the wake-up signal corresponding to the terminal group to the time-frequency position where the wake-up signal of the terminal group is located;

Send the modulated time-frequency position to the terminal through downlink control information.

In a third aspect, an embodiment of the present application also provides a terminal, which includes a processor, a memory, and a transceiver;

Wherein, the processor is used to read and execute the program in the memory:

According to the time-frequency location of the wake-up signal, the wake-up signal is extracted from the received downlink control information; where the terminal belongs to a terminal group, and the terminal group is obtained by grouping the base station according to the characteristic information of the terminal in the service cell of the terminal The wake-up signal of the same terminal group and its time-frequency position are the same;

In a fourth aspect, an embodiment of the present application also provides a network side device, which includes: a processor, a memory, and a transceiver;

For each terminal to receive data, determine the terminal group in the serving cell where the terminal is located; wherein the terminal group is grouped by the base station according to the characteristic information of the terminal in the terminal's serving cell; the wake-up signal of the same terminal group And their time-frequency positions are the same;

In a fifth aspect, an embodiment of the present application also provides another terminal, and the terminal includes:

The extraction module is used to extract the wake-up signal from the received downlink control information according to the time-frequency location of the wake-up signal; wherein, the terminal belongs to a terminal group, and the terminal group is the base station according to the terminal's service in the terminal's service cell The characteristic information is obtained by grouping; the wake-up signals of the same terminal group and their time-frequency positions are the same;

The blind detection module is configured to perform blind detection on the downlink control channel if the wake-up signal used by the terminal is extracted.

In a sixth aspect, the embodiments of the present application also provide another network-side device. The network-side device includes: a determining module for the base station to determine, for each terminal to receive data, the terminal group in the serving cell where the terminal is located; , The terminal group is obtained by the base station grouping according to the characteristic information of the terminals in the serving cell of the terminal; the wake-up signal of the same terminal group and the time-frequency position where it is located are the same;

The modulation module is used to modulate the wake-up signal corresponding to the terminal group to the time-frequency position where the wake-up signal of the terminal group is located;

The second sending module is used to send the modulated time-frequency position to the terminal through downlink control information.

In a seventh aspect, another embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to make a computer execute the A control channel detection method applied to the Internet of Things.

The embodiment of the application provides a control channel detection method, device and storage medium applied to the Internet of Things. The base station groups the terminals in the serving cell according to the characteristic information of the terminals in the serving cell, and assigns wake-ups to each terminal group Signal: When the terminal performs detection, it first extracts the wake-up signal sent by the base station, and determines whether it needs blind detection according to whether it extracts the wake-up signal it uses. In this way, by grouping the terminals, the terminals that have not extracted the wake-up signal used by themselves do not need to perform blind detection, thereby effectively reducing the power consumption of blind detection for terminals in the serving cell that do not need to receive data.

Other features and advantages of the present application will be described in the following description, and partly become obvious from the description, or understood by implementing the present application. The purpose and other advantages of this application can be realized and obtained through the structure specified in the written description, claims, and drawings.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic diagram of a flow of control channel detection in the prior art in an embodiment of this application;

2 is a schematic diagram of a flow of control channel detection in an embodiment of this application;

FIG. 3 is a schematic diagram of another control channel detection process in an embodiment of this application;

4 is a schematic diagram of an application scenario of a control channel detection system applied to the Internet of Things in an embodiment of the application;

5 is a schematic diagram of another application scenario of a control channel detection system applied to the Internet of Things in an embodiment of the application;

FIG. 6 is a schematic diagram of a flow chart of preliminary preparations for the terminal in an embodiment of the application;

FIG. 7 is a schematic flowchart of a control channel detection method applied to the Internet of Things on the terminal side in an embodiment of the application;

Figure 8 is a structural diagram of part of the downlink control information detected by the terminal in an embodiment of this application

FIG. 9 is a schematic diagram of a flow chart of preliminary preparations for a base station in an embodiment of the application;

10 is a schematic flowchart of a control channel detection method applied to the Internet of Things by a network side device in an embodiment of the application;

FIG. 11 is a schematic diagram of terminal 1 and terminal 2 detecting a wake-up signal in an embodiment of the application;

FIG. 12 is a terminal provided by an embodiment of this application;

FIG. 13 is a network side device provided by an embodiment of this application;

FIG. 14 is another terminal provided by an embodiment of this application;

FIG. 15 is another network side device provided by an embodiment of this application.

Detailed ways

In order to reduce the power consumption of blind detection of terminals in the serving cell that do not need to receive data when the base station sends downlink data to the terminals that are to receive data in the serving cell, an embodiment of the application provides a control channel detection applied to the Internet of Things Method, device and storage medium. The solution provided in this application is particularly suitable for narrowband IoT. In order to better understand the technical solution provided by the embodiments of the present application, here is a brief description of the basic principle of the solution:

Currently, when a base station sends downlink data to a terminal, it needs to perform blind detection regardless of whether there is control information of each terminal in the downlink data. After detecting its own control information, it receives data from the data channel according to the time-frequency position indicated by the control information. As shown in Figure 1, terminal 1, terminal 2, terminal 3, and terminal 4 all perform blind detection on the control channel. Only terminal 1 detects its own control information and receives data in the data channel, while terminal 2, terminal 3 and terminal 4 If your own control information is not detected in the control channel, no subsequent operations are performed.

In view of this, in order to reduce the power consumption caused by blind detection of terminals that do not require blind detection, the present application provides a control channel detection method applied to the Internet of Things. First, the base station checks the characteristics of each terminal in the serving cell. The terminals in the serving cell are grouped and a wake-up signal is allocated to each terminal group. Then, the base station sends the wake-up signal of each terminal group and the time-frequency position of the wake-up signal to the terminals in each terminal group. In this way, the terminal extracts the wake-up signal sent by the base station, and determines whether blind detection is required according to whether it extracts the wake-up signal used by itself.

For example: terminal 1, terminal 2, terminal 3 and terminal 4 are in the same serving cell, terminal 1 and terminal 2 are terminal group 1, the wake-up signal of terminal group 1 is wake-up signal 1, and terminal 3 and terminal 4 are terminal group 2. , The wake-up signal of terminal group 2 is wake-up signal 2. Thus, as shown in Figure 2, during the detection cycle, terminal 1, terminal 2, terminal 3, and terminal 4 first detect the wake-up signal. If the wake-up signal is detected as wake-up signal 1, terminal 1 and terminal 2 continue to perform control channel Blind detection, but terminal 3 and terminal 4 do not need to perform blind detection; when terminal 1 detects its own control information, it receives data in the data channel; while terminal 2 does not detect its own control information, it does not need to be in the data channel Receive data in. In this way, by grouping the terminals, the terminals that have not extracted the wake-up signal used by themselves do not need to perform blind detection, thereby effectively reducing the power consumption of the terminals that do not need to receive data in the serving cell. At the same time, the saved power consumption will increase as the number of packets increases. Of course, in order to achieve the purpose of saving power consumption while saving channel resources, at least one terminal group in the same serving cell in the embodiment of the present application has at least two terminals.

In one embodiment, the detection period of different terminal groups may also be different. As shown in Figure 3, when in the detection period of terminal group 1, terminal 1 and terminal 2 detect wake-up signals; terminal 3 and terminal 4 do not need to detect wake-up signal. After terminal 1 and terminal 2 detect the wake-up signal, they continue to perform blind detection on the control channel. When terminal 1 detects its own control information, it receives data in the data channel; while terminal 2 does not detect its own control information, it does not need to Receive data in the data channel. In this way, by configuring different detection periods for different terminal groups, the power consumption of terminals that do not need to receive data in the serving cell can be further reduced.

For ease of understanding, the technical solutions provided by the present disclosure will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 4, it is a schematic diagram of an application scenario of a control channel detection method applied to the Internet of Things in an embodiment of the present disclosure. This scenario includes the terminal device 101, the terminal device 102, the terminal device 103, the terminal device 104, and the base station 105.

Among them, the terminal device 101, the terminal device 102, the terminal device 103, and the terminal device 104 are all terminal devices in the same serving cell.

In the process of accessing terminal equipment 101, terminal equipment 102, terminal equipment 103, and terminal equipment 104, base station 105 obtains characteristic information of each terminal equipment; and divides terminal equipment 101 and terminal equipment 102 into terminal groups according to the characteristic information 1; Divide the terminal device 103 and the terminal device 104 into a terminal group 2. The base station 105 sends the wake-up signal corresponding to the terminal group 1 and the time-frequency location to the terminal device 101 and the terminal device 102 through downlink control information; sends the wake-up signal corresponding to the terminal group 2 and the time-frequency location to the terminal device 103 and Terminal equipment 104.

The terminal device 101, the terminal device 102, the terminal device 103, and the terminal device 104 correspondingly store the received wake-up signal and the time-frequency location.

If the base station 105 needs to send downlink data to the terminal device 101 and the terminal device 102, the wake-up signal corresponding to the terminal device 101 and the terminal device 102 and the time-frequency position are sent to each terminal device; each terminal device detects the wake-up sent by the base station 105 The terminal device 101 and the terminal device 102 determine that the wake-up signal for detecting the wake-up signal is the same as the stored wake-up signal, and then blindly detect the downlink control channel; and the terminal device 103 and the terminal device 104 determine that the wake-up signal for detecting the wake-up signal is the same as the stored wake-up signal. If the wake-up signal is different, no subsequent operations will be performed.

In the embodiment of the present application, the positional relationship of the terminal device 101, the terminal device 102, the terminal device 103, the terminal device 104, and the base station 105 may also be as shown in FIG. 5. Among them, the terminal device 101 and the terminal device 102 are the terminal group 1; the terminal device 103 and the terminal device 104 are the terminal group 2. That is, the terminal equipment can be grouped according to business requirements, for example, the smart meter reading in the cell is divided into one terminal group, and the environmental monitoring equipment is divided into another terminal group. Of course, grouping can also be performed based on other feature information, and the comparison in this application is not limited.

Hereinafter, a detailed description will be given from the terminal side corresponding to the control channel detection method for the Internet of Things through specific embodiments.

1. For the terminal side of the Internet of Things

First, the terminal needs to complete the preparatory work to learn the wake-up signal of the terminal group where it is located and its corresponding time-frequency position, and then it can perform subsequent downlink control channel detection. As shown in Fig. 6, it is a schematic diagram of the flow chart of the preliminary preparation work of the terminal, including the following steps 601-603:

Step 601: In the process of accessing the base station, send characteristic information of the terminal to the base station, so that the base station allocates a terminal group to the terminal according to the characteristic information.

Among them, the base station can allocate terminal groups to the terminals according to the access timing, DRX (continuous non-reception) period, service characteristics and other information in the configuration information.

Step 602: Obtain the time-frequency position of the wake-up signal corresponding to the allocated terminal group and the initial value of the wake-up signal from the downlink control information sent by the base station.

Step 603: Generate the wake-up signal from the initial value according to a predetermined encoding method, and store it correspondingly with the acquired time-frequency position.

Among them, the wake-up signal is a signal with high autocorrelation, such as a ZC (Zadoff-Chu) sequence signal, an M sequence signal, and a GOD sequence signal. By grouping the terminals, the terminals of the same type can be grouped into one group. In this way, when the base station sends downlink data, only the terminals that need to receive data in the same serving cell are grouped, so that other groups of terminals do not need to control the downlink Channel blind detection, thereby reducing power consumption. As mentioned above, grouping is performed according to the type of terminal (for example, the smart meter reading in the serving cell is divided into one group, and the environmental monitor is divided into one group). If the base station sends downlink data for the smart meter reading, the When the environmental monitor detects that the wake-up signal is different from the stored one, it will not blindly detect the downlink control channel, thereby reducing the power consumption of the environmental monitor.

In the embodiment of the present application, the wake-up signal of each terminal group can be obtained through the following two solutions to realize the distinction between different terminal groups.

Solution 1: The wake-up signals of different terminal groups are the same, but the time-frequency positions of the wake-up signals of different terminal groups are different.

In this way, the wake-up signals of different terminal groups are the same, but the wake-up signals of different terminal groups are modulated at different time-frequency positions, thereby distinguishing each terminal group. In this way, when the terminal performs detection, it only needs to detect whether there is a wake-up signal at the corresponding time-frequency position in the downlink control information according to the pre-stored time-frequency position. If there is, then blind detection is performed on the downlink control channel, if not, there is no need to perform blind detection on the downlink control channel.

In this solution, in order to be able to further send the grouping information to the terminal, it can be specifically implemented as steps A1-A2:

Step A1: Obtain the initial value of the wake-up signal from the system message of the broadcast channel, or the unified wake-up signal generation method of each terminal.

Among them, the base station broadcasts the same information through the broadcast channel to save channel resources.

Step A2: Obtain the time-frequency position of the wake-up signal from the radio resource dedicated configuration information (RadioResourceConfigDedicated-NB) of the control channel.

Wherein, the execution order of steps A1-A2 is not limited. If you want to implement solution one, you can distinguish the wake-up signal through the time domain or the frequency domain. This application does not limit this.

However, using the scheme to distinguish between each terminal group will occupy a lot of resources. Therefore, this application also provides an optimized scheme, such as scheme two.

Solution 2: The wake-up signals of different terminal groups are different, but the time-frequency positions of the wake-up signals of different terminal groups are the same.

In this way, the wake-up signals of different terminal groups are different, and the wake-up signals of different terminal groups are modulated at the same time-frequency position, thereby distinguishing each terminal group. In this way, when the terminal performs detection, it detects whether there is a wake-up signal that is the same as the pre-stored wake-up signal at the corresponding time-frequency position in the downlink control information according to the pre-stored time-frequency position. If there is, then blind detection is performed on the downlink control channel, if not, there is no need to perform blind detection on the downlink control channel.

In this solution, in order to be able to further send the grouping information to the terminal, it can be specifically implemented as steps B1-B2:

Step B1: Obtain the time-frequency position of the wake-up signal from the system message of the broadcast channel.

Step B2: Obtain the initial value of the wake-up signal from the wireless resource dedicated configuration information of the control channel.

Wherein, the execution order of steps B1-B2 is not limited.

After the terminal knows its own wake-up signal and its corresponding time-frequency position, it can perform blind detection of the downlink control channel. As shown in FIG. 7, the flow chart of the control channel detection method applied to the Internet of Things provided by this embodiment of the application may include the following steps:

Step 701: The terminal extracts the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal.

Among them, as mentioned above, the terminal belongs to a terminal group, which is obtained by the base station grouping according to the characteristic information of the terminal in the service cell of the terminal; the wake-up signal of the same terminal group and its time-frequency location All the same.

Step 702: If the wake-up signal used by the terminal is extracted, perform blind detection on the downlink control channel.

Wherein, in the embodiment of the present application, if the wake-up signal used by the terminal is not extracted, no subsequent operations need to be performed.

In this way, by grouping the terminals in the serving cell, when the base station sends downlink data to the terminals in the serving cell to receive data, the power consumption of the terminals in the serving cell that do not need to receive data can be effectively reduced.

In the embodiments of the present application, different detection methods can be performed according to different solutions. As mentioned above, if the first solution (that is, the wake-up signals of different terminal groups are the same, but the time-frequency positions of the wake-up signals of different terminal groups are different) are used to distinguish different terminal groups, step 702 can be specifically implemented as step C1 -C2:

Step C1: Extract the wake-up signal at the time-frequency position where the wake-up signal of the terminal group corresponding to the terminal is located.

Step C2: If the wake-up signal is extracted, perform blind detection on the downlink control channel.

In this way, when the terminal performs detection, it only needs to detect whether there is a wake-up signal at the corresponding time-frequency position in the downlink control information according to the pre-stored time-frequency position. If yes, then blindly detect the downlink control channel. If no wake-up signal is detected, then blind detection is not performed.

In this way, by allocating different time-frequency positions for the terminals in the serving cell, and grouping the terminals, when the base station sends downlink data to the terminals in the serving cell that are to receive data, only the terminal corresponding to the time-frequency position where the wake-up signal is located Blind detection is sufficient, which can effectively reduce the power consumption of terminals in the serving cell that do not need to receive data.

The above introduces the specific method for the terminal to detect the wake-up signal when using the first scheme. The following is the second method (that is, the wake-up signals of different terminal groups are different, but the time-frequency positions of the wake-up signals of different terminal groups are the same) for different terminals The specific method used by the group to distinguish, step 602 can be specifically implemented as steps D1-D2:

Step D1: Taking the sampling point of the wake-up signal in the time sequence as a reference, perform convolution calculation on the wake-up signal of the terminal along the time sequence to determine the calculation result.

Among them, by performing convolution calculation on the wake-up signal of the terminal along the time sequence, the accuracy of the time synchronization requirements between the IoT terminal and the base station can be reduced.

Step D2: If there is a peak in the calculation result, perform blind detection on the downlink control channel.

Among them, in the embodiment of the present application, if the calculation result does not have a peak, then blind detection is not performed.

In this way, by assigning different wake-up signals to the terminals in the serving cell, and grouping the terminals, when the base station sends downlink data to the terminals to be received in the serving cell, it can be calculated by convolution, and the terminal with the peak value of the calculation result can be blinded. The detection is sufficient, which can effectively reduce the power consumption of terminals that do not need to receive data in the serving cell. And by allocating different wake-up signals to terminals in the serving cell, resources in the downlink control information can be saved.

In one embodiment, the terminal uses the sampling point of the wake-up signal in the time sequence as a reference to determine the sampling point and the signal within a predetermined range before and after, as shown in FIG. 8, which is a structure diagram of part of the downlink control information. Downlink control information is divided into 7 time-frequency positions (numbered from left to right are 0-6), black areas (time-frequency positions numbered 3) are sampling points, and areas with vertical lines (numbered 2 and 4) The time-frequency position) is the signal acquired based on the sampling point. The signal in the black area and the area containing the vertical line (that is, the area of the time-frequency position numbered 2-4) is converted into a time-domain signal by FFT (Fast Fourier Transform). The pre-stored wake-up signal and the converted time-domain signal are subjected to convolution calculation, and the peak value is used to determine whether there is a wake-up signal corresponding to the terminal.

Among them, by acquiring a segment of the signal containing the wake-up signal, it is not necessary to perform strict time synchronization on the acquired signal, thereby saving the time for determining the wake-up signal.

In the embodiment of the present application, once the terminal group is determined, the terminal group may not be changed. Of course, the terminal group in a serving cell may be re-divided according to actual needs. For example, with the interaction between the terminal and the base station, the base station can reassign the terminal group to the terminal according to the interactive information, and send the updated information to the terminal, which can be specifically implemented as follows: Control channel radio resource control connection setup information (RRCConnectionSetup- Obtain the time-frequency position of the updated wake-up signal or the initial value of the wake-up signal in NB message). In this way, the terminal group of the terminal is re-allocated by the base station, so that when the information of the terminal does not match the current terminal group after a change, the terminal group can still be re-divided to match the terminal group where it is located, so that the same terminal group can be used The same wake-up signal and its corresponding time-frequency position will not affect the purpose of the business.

The above mainly introduces the control channel detection method applied to the Internet of Things through the terminal side, and the corresponding control channel detection method for the Internet of Things is described in detail from the base station side through specific embodiments.

2. For the base station side

In the same way, the base station also needs to complete the preparatory work. As shown in Figure 9, after the base station connects to the terminal and obtains the configuration information of the terminal, it can be specifically implemented as steps 901-903:

Step 901: In the process of accessing the terminal, obtain characteristic information of the terminal.

Step 902: Assign a terminal group to the terminal according to the characteristic information.

Step 903: Send the time-frequency position of the wake-up signal corresponding to the terminal group and the initial value of the wake-up signal to the terminal through the downlink control information.

By grouping the terminals, the terminals of the same type can be grouped into one group. In this way, when the base station sends downlink data, the terminals to receive the data are grouped into one group, so that other groups of terminals do not need to perform blind detection on the downlink control channel. Thereby reducing power consumption. As mentioned earlier, the base station is grouped according to the type of terminal (for example, the smart meter reading in the serving cell is divided into one group, and the environmental monitor is divided into one group). If the base station sends downlink data for the smart meter reading, the service cell When the environmental monitor detects that the wake-up signal is different from the stored one, it will not blindly detect the downlink control channel, thereby reducing the power consumption of the environmental monitor.

In this embodiment of the application, two solutions can be used to distinguish different terminal groups.

Solution 1: The wake-up signals of different terminal groups are the same, but the time-frequency positions of the wake-up signals of different terminal groups are different. In this way, the wake-up signals of different terminal groups are the same, but the wake-up signals of different terminal groups are modulated at different time-frequency positions, thereby distinguishing each terminal group.

Under this scheme, in order to be able to further send the grouping information to the terminal, it can be specifically implemented as steps E1-E2:

Step E1: Broadcast the initial value of the wake-up signal or the unified wake-up signal generation method of each terminal through the system message of the broadcast channel.

Among them, broadcasting the same information through a broadcast channel can save channel resources.

Step E2: Send the time-frequency location of the wake-up signal corresponding to the terminal group to the terminal through the wireless resource dedicated configuration information of the terminal.

Solution 2: The wake-up signals of different terminal groups are different, but the time-frequency positions of the wake-up signals of different terminal groups are the same. In this way, the wake-up signals of different terminal groups are different, and the wake-up signals of different terminal groups are modulated at the same time-frequency position, thereby distinguishing each terminal group.

In this solution, in order to be able to further send the grouping information to the terminal, it can be specifically implemented as steps F1-F2:

Step F1: Broadcast the time-frequency position of the wake-up signal through the system message of the broadcast channel.

Step F2: Send the initial value of the wake-up signal corresponding to the terminal group to the terminal through the wireless resource dedicated configuration information of the terminal.

The above describes how to distinguish each terminal group and how to allocate each terminal group. The method of detecting the downlink control channel is further explained below. Fig. 10 is a schematic flowchart of a control channel detection method applied to the Internet of Things, including the following steps:

Step 1001: The base station determines the terminal group in the serving cell where the terminal is located for each terminal to receive data.

Wherein, the terminal group is obtained by the base station grouping according to the characteristic information of the terminals in the serving cell of the terminal; the wake-up signals of the same terminal group and their time-frequency positions are the same.

Step 1002: modulate the wake-up signal corresponding to the terminal group to the time-frequency position of the wake-up signal of the terminal group.

Step 1003: Send the modulated time-frequency position to the terminal through downlink control information.

In the embodiment of the present application, as the terminal interacts with the base station, the base station can reallocate the terminal group to the terminal according to the interaction information, and send the updated information to the terminal, which can be specifically implemented as steps G1-G3:

Step G1: According to the characteristics of the uplink data sent by the terminal, reallocate a terminal group for the terminal.

Among them, the characteristics of the uplink data include at least one of the following: data amount, transmission period, and so on. During specific implementation, it can also be executed according to the content of the data sent. Of course, in specific implementation, when dividing, the same terminal group can use the same wake-up signal and its corresponding time-frequency position without affecting its business.

Step G2: Update the wake-up signal for the terminal according to the reassigned terminal group.

Of course, the wake-up signal encoded according to the preset encoding rule can also be sent to the terminal.

By grouping the terminals, the terminals of the same type can be grouped into one group. In this way, when the base station sends downlink data, the terminals to receive the data are grouped into one group, so that other groups of terminals do not need to perform blind detection on the downlink control channel. Thereby reducing power consumption.

In order to facilitate a systematic understanding of the technical solutions provided by the embodiments of this application, the following will further illustrate this with a specific example. In this embodiment, different terminal groups have different wake-up signals, and the same time-frequency positions of the wake-up signals are used to distinguish the terminal serving cells. Case. Among them, there are a total of four terminals: terminal 1, terminal 2, terminal 3, and terminal 4 in the serving cell. Among them, terminal 1 and terminal 2 belong to terminal group 1, and terminal 3 and terminal 4 belong to terminal group 2. Terminal group 1 needs to receive data, and terminal group 2 does not need to receive data. As shown in Figure 11, taking Terminal 1 and Terminal 3 as an example, the technical solution provided by the embodiment of the present application will be described; among them, Terminal 1 belongs to Terminal Group 1 and needs to receive data; while Terminal 3, Data Terminal Group 2, does not need Receive data. It includes the following steps:

Step 1101: When terminal 1 and terminal 3 are accessing the base station, they respectively send the characteristic information to the base station.

Step 1102: The base station allocates terminal groups to terminal 1 and terminal 3 according to the feature information.

Step 1103: The base station sends the time-frequency position of the wake-up signal corresponding to terminal group 1 and the initial value of the wake-up signal to terminal 1 through downlink control information; and, through the downlink control information, the time-frequency location of the wake-up signal corresponding to terminal group 2 is sent The initial value of the position and wake-up signal is sent to the terminal 3.

Step 1104: The terminal 1 and the terminal 3 generate the wake-up signal from the initial value according to a predetermined encoding method, and store the wake-up signal corresponding to the acquired time-frequency position.

Step 1105: The base station determines that the terminal group in the serving cell where the terminal 1 is located is the terminal group 1.

Step 1106: The base station modulates the wake-up signal corresponding to the terminal group 1 to the time-frequency position of the wake-up signal of the terminal group.

Step 1107: The base station sends the modulated time-frequency position to the terminal 1 through downlink control information.

Step 1108: The terminal 1 and the terminal 3 extract the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal.

Step 1109: The terminal 1 and the terminal 3 use the sampling point of the wake-up signal in the time sequence as a reference, and perform a convolution calculation on the wake-up signal of the terminal along the time sequence to determine the calculation result.

Step 1111: If there is a peak in the calculation result of terminal 1, blind detection is performed on the downlink control channel.

Step 1111: If there is no peak in the calculation result of the terminal 3, blind detection of the downlink control channel is not performed.

Based on the same inventive concept, an embodiment of the present application also provides a terminal and a network side device. As shown in FIG. 12, a terminal provided by an embodiment of this application includes: at least one processing unit 1200 and at least one storage unit 1201, wherein the storage unit 1201 stores program code, and when the program code is When the processing unit 1200 is executed, the processing unit 1200 is caused to execute the following process:

Optionally, the wake-up signals of different terminal groups are different, and the time-frequency positions of the wake-up signals of different terminal groups are the same;

The processor 1200 is specifically configured to execute:

Taking the sampling point of the wake-up signal in the time sequence as a reference, perform convolution calculation on the wake-up signal of the terminal along the time sequence to determine the calculation result;

If there is a peak in the calculation result, blind detection is performed on the downlink control channel.

Optionally, the wake-up signals of different terminal groups are the same, and the time-frequency positions of the wake-up signals of different terminal groups are different;

The processor 1200 is specifically further configured to execute:

Extracting the wake-up signal at the time-frequency position where the wake-up signal of the terminal group corresponding to the terminal is located;

If the wake-up signal is extracted, blind detection is performed on the downlink control channel.

Optionally, the processor 1200 is specifically further configured to execute:

In the process of accessing the base station, sending characteristic information of the terminal to the base station, so that the base station allocates a terminal group to the terminal according to the characteristic information;

Acquiring the time-frequency position of the wake-up signal corresponding to the assigned terminal group and the initial value of the wake-up signal from the downlink control information sent by the base station;

The initial value is generated according to a predetermined encoding method, and the wake-up signal is stored corresponding to the obtained time-frequency position.

The processor 1200 is specifically further configured to execute:

Obtain the time-frequency position of the wake-up signal from the system message of the broadcast channel; and,

The initial value of the wake-up signal is obtained from the dedicated configuration information of the wireless resource of the control channel.

The processor 1200 is specifically further configured to execute:

Obtain the initial value of the wake-up signal from the system message of the broadcast channel, or the unified wake-up signal generation method of each terminal; and,

Obtain the time-frequency position of the wake-up signal from the dedicated configuration information of the wireless resource of the control channel.

Optionally, the processor 1200 is specifically further configured to execute:

Obtain the time-frequency position of the updated wake-up signal or the initial value of the wake-up signal from the control channel radio resource control connection setting information.

As shown in FIG. 13, it is a network side device provided in an embodiment of this application. The network side device includes: at least one processing unit 1300 and at least one storage unit 1301, wherein the storage unit 1301 stores program code, and when the program code is executed by the processing unit 1300, the processing unit 1300 performs the following process:

Optionally, the processor 1300 is specifically configured to execute:

In the process of accessing the terminal, acquiring characteristic information of the terminal;

Assign a terminal group to the terminal according to the characteristic information;

The time-frequency position of the wake-up signal corresponding to the terminal group and the initial value of the wake-up signal are sent to the terminal through the downlink control information.

The processor 1300 is specifically configured to execute:

Broadcast the time-frequency location of the wake-up signal through the system message of the broadcast channel; and,

The initial value of the wake-up signal corresponding to the terminal group is sent to the terminal through the wireless resource dedicated configuration information of the terminal.

The processor 1300 is specifically configured to execute:

Broadcast the initial value of the wake-up signal or the unified wake-up signal generation method of each terminal through the system message of the broadcast channel; and,

The time-frequency location of the wake-up signal corresponding to the terminal group is sent to the terminal through the wireless resource dedicated configuration information of the terminal.

Optionally, the processor 1300 is specifically configured to execute:

According to the characteristics of the uplink data sent by the terminal, re-allocate the terminal group for the terminal; wherein the characteristics of the uplink data include at least one of the following: data amount and transmission period;

Update the wake-up signal for the terminal according to the terminal group after the reallocation.

Optionally, the processor 1300 is specifically configured to execute:

If the wake-up signals of different terminal groups are different, and the time-frequency positions of the wake-up signals of different terminal groups are the same, the initial value of the wake-up signal corresponding to the terminal group after the reallocation is sent to the terminal through the wireless resource control connection setting information;

If the wake-up signals of different terminal groups are the same, and the time-frequency positions of the wake-up signals of different terminal groups are different, the time-frequency positions of the wake-up signals corresponding to the terminal groups after the reallocation are sent to the wireless resource control connection setting information. terminal.

As shown in FIG. 14, it is a schematic diagram of another terminal in an embodiment of this application. The terminal includes:

The extraction module 1401 is used to extract the wake-up signal from the received downlink control information according to the time-frequency location of the wake-up signal; wherein, the terminal belongs to a terminal group, and the terminal group is the base station according to the terminal in the serving cell of the terminal The characteristic information of the terminal group is obtained; the wake-up signals of the same terminal group and their time-frequency positions are the same;

The blind detection module 1402 is configured to perform blind detection on the downlink control channel if the wake-up signal used by the terminal is extracted.

Further, the extraction module 1401 includes:

The extraction unit is used to extract a signal that can contain the time-frequency position and whose length is greater than the time-frequency position from the received downlink control information based on the time-frequency position.

Further, the wake-up signals of different terminal groups are different, and the time-frequency positions of the wake-up signals of different terminal groups are the same; the blind detection module 1402 includes:

The calculation unit is used to perform convolution calculation on the wake-up signal of the terminal along the timing sequence based on the sampling point of the wake-up signal in the time sequence to determine the calculation result;

The first blind detection unit is configured to perform blind detection on the downlink control channel if there is a peak in the calculation result.

Further, the wake-up signals of different terminal groups are the same, and the time-frequency positions of the wake-up signals of different terminal groups are different; the blind detection module 1402 includes:

An extraction unit, configured to extract the wake-up signal at the time-frequency position where the wake-up signal of the terminal group corresponding to the terminal is located;

The second blind detection unit is configured to perform blind detection on the downlink control channel if the wake-up signal is extracted.

Further, the device further includes:

The first sending module is used for the extraction module 1401, before extracting the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal, and in the process of accessing the base station, send the characteristic information of the terminal to The base station, so that the base station allocates a terminal group to the terminal according to the characteristic information;

The first obtaining module is configured to obtain the time-frequency position of the wake-up signal corresponding to the assigned terminal group and the initial value of the wake-up signal from the downlink control information sent by the base station;

The storage module is configured to generate the wake-up signal from the initial value according to a predetermined encoding method, and store the wake-up signal corresponding to the acquired time-frequency position.

Further, the wake-up signals of different terminal groups are different, and the time-frequency positions of the wake-up signals of different terminal groups are the same; the first acquisition module includes:

The first acquiring unit is used to acquire the time-frequency position of the wake-up signal from the system message of the broadcast channel;

The second acquiring unit is used to acquire the initial value of the wake-up signal from the dedicated configuration information of the radio resource of the control channel.

Further, the wake-up signals of different terminal groups are the same, and the time-frequency positions of the wake-up signals of different terminal groups are different; the first acquisition module includes:

The third acquiring unit is used to acquire the initial value of the wake-up signal from the system message of the broadcast channel, or the unified wake-up signal generation method of each terminal;

The fourth acquiring unit is used to acquire the time-frequency position of the wake-up signal from the dedicated configuration information of the wireless resource of the control channel.

Further, the belonging device also includes:

The second acquiring module is used to acquire the time-frequency position of the updated wake-up signal or the initial value of the wake-up signal from the control channel radio resource control connection setting information.

As shown in FIG. 15, it is a schematic diagram of another network-side device in an embodiment of this application. The network side equipment includes:

The determining module 1501 is configured to determine the terminal group in the serving cell where the terminal is located for each terminal to receive data; wherein, the terminal group is obtained by the base station grouping according to the characteristic information of the terminal in the serving cell of the terminal; The wake-up signals of the same terminal group and their time-frequency positions are the same;

The modulation module 1502 is used to modulate the wake-up signal corresponding to the terminal group to the time-frequency position of the wake-up signal of the terminal group;

The second sending module 1503 is configured to send the modulated time-frequency position to the terminal through downlink control information.

Further, the device further includes:

The third acquiring module is used for determining module 1501 for each terminal to receive data, before determining the terminal group in the serving cell where the terminal is located, during the process of accessing the terminal, acquiring characteristic information of the terminal;

An allocation module, configured to allocate a terminal group to the terminal according to the characteristic information;

The third sending module is configured to send the time-frequency position of the wake-up signal corresponding to the terminal group and the initial value of the wake-up signal to the terminal through the downlink control information.

Further, the wake-up signals of different terminal groups are different, and the time-frequency positions of the wake-up signals of different terminal groups are the same; the third sending module includes:

The first broadcasting unit is used to broadcast the time-frequency position of the wake-up signal through the system message of the broadcasting channel;

The first sending unit is configured to send the initial value of the wake-up signal corresponding to the terminal group to the terminal through the wireless resource dedicated configuration information of the terminal.

Further, the wake-up signals of different terminal groups are the same, and the time-frequency positions of the wake-up signals of different terminal groups are different; the third sending module includes:

The second broadcast unit is used to broadcast the initial value of the wake-up signal or the unified wake-up signal generation method of each terminal through the system message of the broadcast channel;

The second sending unit is configured to send the time-frequency location of the wake-up signal corresponding to the terminal group to the terminal through the wireless resource dedicated configuration information of the terminal.

Further, the device further includes:

The re-allocation module is configured to re-allocate a terminal group for the terminal according to the characteristics of the uplink data sent by the terminal; wherein the characteristics of the uplink data include at least one of the following: data amount and transmission period;

The update module is used to update the wake-up signal for the terminal according to the re-allocated terminal group.

An embodiment of the present invention also provides a computer-readable non-volatile storage medium, including program code, when the program code runs on a computing terminal, the program code is used to make the computing terminal execute the foregoing implementation of the present invention Examples are applied to the steps of the control channel detection method of the Internet of Things.

The foregoing describes the present application with reference to block diagrams and/or flowcharts showing methods, devices (systems) and/or computer program products according to embodiments of the present application. It should be understood that one block of the block diagram and/or flowchart diagram and a combination of the blocks in the block diagram and/or flowchart diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, and/or other programmable data processing devices to produce a machine, so that the instructions executed via the computer processor and/or other programmable data processing devices are created for A method of implementing the functions/actions specified in the block diagram and/or flowchart block.

Correspondingly, hardware and/or software (including firmware, resident software, microcode, etc.) can also be used to implement this application. Furthermore, this application may take the form of a computer program product on a computer-usable or computer-readable storage medium, which has a computer-usable or computer-readable program code implemented in the medium to be used by the instruction execution system or Used in conjunction with the instruction execution system. In the context of this application, a computer-usable or computer-readable medium can be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, device, or device, or in combination with an instruction execution system, Device or equipment use.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

A control channel detection method applied to the Internet of Things, characterized in that the method includes:

The terminal extracts the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal; wherein the terminal belongs to a terminal group, which is the base station grouping according to the characteristic information of the terminals in the service cell of the terminal Obtained; the wake-up signals of the same terminal group and their time-frequency positions are the same;

If the wake-up signal used by the terminal is extracted, blind detection is performed on the downlink control channel.
The method of claim 1, wherein the wake-up signals of different terminal groups are different, and the time-frequency positions of the wake-up signals of different terminal groups are the same;

If the wake-up signal used by the terminal is extracted, performing blind detection on the downlink control channel specifically includes:

Taking the sampling point of the wake-up signal in the time sequence as a reference, perform convolution calculation on the wake-up signal of the terminal along the time sequence to determine the calculation result;

If there is a peak in the calculation result, blind detection is performed on the downlink control channel.
The method of claim 1, wherein the wake-up signals of different terminal groups are the same, and the time-frequency positions of the wake-up signals of different terminal groups are different;

If the wake-up signal used by the terminal is extracted, performing blind detection on the downlink control channel specifically includes:

Extracting the wake-up signal at the time-frequency position where the wake-up signal of the terminal group corresponding to the terminal is located;

If the wake-up signal is extracted, blind detection is performed on the downlink control channel.
The method according to claim 1, wherein before the terminal extracts the wake-up signal from the received downlink control information according to the time-frequency position where the wake-up signal is located, the method further comprises:

In the process of accessing the base station, sending characteristic information of the terminal to the base station, so that the base station allocates a terminal group to the terminal according to the characteristic information;

Acquiring the time-frequency position of the wake-up signal corresponding to the assigned terminal group and the initial value of the wake-up signal from the downlink control information sent by the base station;

The initial value is generated according to a predetermined encoding method, and the wake-up signal is stored corresponding to the obtained time-frequency position.
The method of claim 4, wherein the wake-up signals of different terminal groups are different, and the time-frequency positions of the wake-up signals of different terminal groups are the same;

The obtaining the time-frequency position of the wake-up signal corresponding to the assigned terminal group and the initial value of the wake-up signal from the downlink control information sent by the base station specifically includes:

Obtain the time-frequency position of the wake-up signal from the system message of the broadcast channel; and,

The initial value of the wake-up signal is obtained from the dedicated configuration information of the wireless resource of the control channel.
The method of claim 4, wherein the wake-up signals of different terminal groups are the same, and the time-frequency positions of the wake-up signals of different terminal groups are different;

The obtaining the time-frequency position of the wake-up signal corresponding to the assigned terminal group and the initial value of the wake-up signal from the downlink control information sent by the base station specifically includes:

Obtain the initial value of the wake-up signal from the system message of the broadcast channel, or the unified wake-up signal generation method of each terminal; and,

Obtain the time-frequency position of the wake-up signal from the dedicated configuration information of the wireless resource of the control channel.
A control channel detection method applied to the Internet of Things, characterized in that the method includes:

For each terminal to receive data, the base station determines the terminal group in the serving cell where the terminal is located; wherein the terminal group is obtained by the base station grouping according to the characteristic information of the terminal in the serving cell of the terminal; wake-up of the same terminal group The signal and its time-frequency position are the same;

Modulate the wake-up signal corresponding to the terminal group to the time-frequency position where the wake-up signal of the terminal group is located;

Send the modulated time-frequency position to the terminal through downlink control information.
The method according to claim 7, wherein before the base station determines the terminal group in the serving cell where the terminal is located for each terminal to receive data, the method further comprises:

In the process of accessing the terminal, acquiring characteristic information of the terminal;

Assign a terminal group to the terminal according to the characteristic information;

The time-frequency position of the wake-up signal corresponding to the terminal group and the initial value of the wake-up signal are sent to the terminal through the downlink control information.
A terminal, characterized in that the terminal includes a processor, a memory, and a transceiver;

The processor is used to read and execute the program in the memory:

According to the time-frequency location of the wake-up signal, the wake-up signal is extracted from the received downlink control information; where the terminal belongs to a terminal group, and the terminal group is obtained by grouping the base station according to the characteristic information of the terminal in the service cell of the terminal The wake-up signal of the same terminal group and its time-frequency position are the same;

If the wake-up signal used by the terminal is extracted, blind detection is performed on the downlink control channel.
A network side device, characterized in that the network side device includes a processor, a memory, and a transceiver;

The processor is used to read and execute the program in the memory:

For each terminal to receive data, determine the terminal group in the serving cell where the terminal is located; wherein the terminal group is grouped by the base station according to the characteristic information of the terminal in the terminal's serving cell; the wake-up signal of the same terminal group And their time-frequency positions are the same;

Modulate the wake-up signal corresponding to the terminal group to the time-frequency position of the wake-up signal of the terminal group;

Send the modulated time-frequency position to the terminal through downlink control information.