CN112087790B

CN112087790B - Control channel detection method and device applied to Internet of things and storage medium

Info

Publication number: CN112087790B
Application number: CN201910516492.2A
Authority: CN
Inventors: 吕叶青; 刘宏举; 吴风炎
Original assignee: Hisense Co Ltd
Current assignee: Hisense Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2022-07-29
Anticipated expiration: 2039-06-14
Also published as: WO2020249059A1; CN112087790A

Abstract

The application discloses a control channel detection method, a control channel detection device and a storage medium applied to the Internet of things, relates to the field of the Internet of things, and aims to solve the problems that in the prior art, when a terminal is in a detection period, blind detection needs to be carried out on a downlink control channel, power consumption is increased, and resource utilization rate is low. In the method, a base station groups terminals in a service cell according to characteristic information of each terminal in the service cell and distributes an awakening signal for each terminal group; when the terminal detects, firstly, the wake-up signal sent by the base station is extracted, and whether blind detection is needed or not is determined according to whether the wake-up signal adopted by the terminal is extracted or not. Therefore, by grouping the terminals, the terminals which do not extract the wake-up signals adopted by the terminals do not need to perform blind detection, and the power consumption of the blind detection performed by the terminals which do not need to receive data in the serving cell is effectively reduced.

Description

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

Technical Field

The present application relates to the field of internet of things, and in particular, to a control channel detection method and apparatus applied to the internet of things, and a storage medium.

Background

Currently, the technology of internet of things is widely applied, for example, the technology of cellular internet of things is widely applied to the scenes of internet of things such as intelligent meter reading and environment monitoring by the characteristics of low power consumption, wide coverage and the like.

When a certain internet of things terminal is in a connected state, because the internet of things terminal does not determine whether there is own control information in downlink data, and does not determine the size and occupied time-frequency position of a control information block, blind detection needs to be performed on an area occupied by a downlink control channel (PDCCH). If the control information of the equipment is detected, receiving data according to the time-frequency position indicated by the control information; and if the control information of the equipment is not detected, waiting for the next detection period to carry out blind detection.

Due to the infrequent data transmission of the internet of things equipment, for one internet of things terminal, the number of times that the control information of the terminal can be detected in all blind detections is small. Therefore, when the terminal is in the detection period, blind detection needs to be performed on the downlink control channel, so that power consumption is increased, and resource utilization rate is low.

Disclosure of Invention

The embodiment of the application provides a control channel detection method, a control channel detection device and a storage medium applied to the Internet of things, and aims to solve the problems that in the prior art, when a terminal is in a detection period, blind detection needs to be carried out on a downlink control channel, power consumption is increased, and resource utilization rate is low.

In a first aspect, an embodiment of the present application provides a control channel detection method applied to an internet of things, where 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; the terminal belongs to a terminal group, and the terminal group is obtained by grouping a base station according to the characteristic information of the terminal in a service cell of the terminal; the wake-up signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

and if the wake-up signal adopted by the terminal is extracted, blind detection is carried out 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, where the method includes:

the base station determines a terminal group in a service cell of each terminal to receive data; 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 signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

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

And sending the modulated time frequency position to a terminal through downlink control information.

In a third aspect, an embodiment of the present application further provides a terminal, where the terminal includes: a processor, a memory, and a transceiver;

wherein the processor is configured to read a program in the memory and execute:

extracting the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal; the terminal belongs to a terminal group, and the terminal group is obtained by grouping a base station according to the characteristic information of the terminal in a service cell of the terminal; the wake-up signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

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

aiming at each terminal to receive data, determining a terminal group in a service cell where the terminal is located; 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 signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

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

the extraction module is used for extracting the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal; the terminal belongs to a terminal group, and the terminal group is obtained by grouping a base station according to the characteristic information of the terminal in a service cell of the terminal; the wake-up signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

and the blind detection module is used for carrying out blind detection on the downlink control channel if the wake-up signal adopted by the terminal is extracted.

In a sixth aspect, an embodiment of the present application further provides another network-side device, where the network-side device includes: a determining module, configured to determine, by a base station, a terminal group in a serving cell where a terminal is located, for each terminal to receive data; 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 signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

The modulation module is used for modulating 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;

and the second sending module is used for sending the modulated time frequency position to the terminal through the downlink control information.

In a seventh aspect, another embodiment of the present application further provides a computer storage medium, where the computer storage medium stores computer-executable instructions, and the computer-executable instructions are configured to cause a computer to execute a control channel detection method applied to the internet of things in the embodiments of the present application.

According to the control channel detection method, device and storage medium applied to the Internet of things, a base station groups terminals in a serving cell according to characteristic information of the terminals in the serving cell and distributes wake-up signals to terminal groups; when the terminal detects, firstly, the wake-up signal sent by the base station is extracted, and whether blind detection is needed or not is determined according to whether the wake-up signal adopted by the terminal is extracted or not. Therefore, by grouping the terminals, the terminals which do not extract the wake-up signals adopted by the terminals do not need to perform blind detection, and the power consumption of the blind detection performed by the terminals which do not need to receive data in the serving cell is effectively reduced.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic flow chart of control channel detection in the prior art according to an embodiment of the present application;

fig. 2 is a schematic flow chart of control channel detection according to an embodiment of the present application;

FIG. 3 is a flow chart illustrating another exemplary control channel detection method according to the present disclosure;

fig. 4 is a schematic view of an application scenario of a control channel detection system applied to the internet of things in the embodiment of the present application;

fig. 5 is a schematic view of another application scenario of a control channel detection system applied to the internet of things in the embodiment of the present application;

fig. 6 is a schematic flowchart of a preliminary preparation work for a terminal in the embodiment of the present application;

Fig. 7 is a schematic flowchart of a control channel detection method applied to the internet of things at a terminal side in the embodiment of the present application;

fig. 8 is a diagram of a structure of a part of downlink control information detected by a terminal in an embodiment of the present application;

fig. 9 is a schematic flowchart of a preliminary preparation work for a base station in the embodiment of the present application;

fig. 10 is a schematic flowchart of a control channel detection method applied to the internet of things by a network side device in the embodiment of the present application;

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

fig. 12 is a terminal according to an embodiment of the present application;

fig. 13 is a network side device according to an embodiment of the present application;

fig. 14 is another terminal provided in an embodiment of the present application;

fig. 15 is another network-side device according to an embodiment of the present disclosure.

Detailed Description

In order to reduce power consumption of blind detection of a terminal which does not need to receive data in a serving cell when a base station sends downlink data to the terminal which is to receive data in the serving cell, the embodiment of the application provides a control channel detection method and device and a storage medium applied to the internet of things. The scheme that this application provided is particularly useful for the narrowband thing networking. In order to better understand the technical solution provided by the embodiments of the present application, the following brief description is made on the basic principle of the solution:

Currently, when a base station sends downlink data to a terminal, blind detection is required regardless of whether the downlink data has control information of each terminal. And when the control information of the user is detected, receiving data from the data channel according to the time-frequency position indicated by the control information. As shown in fig. 1, the terminal 2, the terminal 3, and the terminal 4 perform blind detection on the control channel, and receive data in the data channel only if the terminal 1 detects its own control information, while the terminal 2, the terminal 3, and the terminal 4 do not detect its own control information in the control channel and do not perform subsequent operations.

In view of this, in order to reduce power consumption caused by blind detection of terminals that do not need blind detection, the present application provides a control channel detection method applied to the internet of things. And then, the base station correspondingly sends the wake-up signals of the terminal groups and the time-frequency positions of the wake-up signals to the terminals in the terminal groups. Therefore, the terminal extracts the wake-up signal sent by the base station and determines whether blind detection is needed according to whether the wake-up signal adopted by the terminal is extracted or not.

For example: the terminal 1, the terminal 2, the terminal 3 and the terminal 4 are in the same service cell, the terminal 1 and the terminal 2 are terminal groups 1, the wake-up signal of the terminal group 1 is a wake-up signal 1, the terminal 3 and the terminal 4 are terminal groups 2, and the wake-up signal of the terminal group 2 is a wake-up signal 2. Thus, as shown in fig. 2, during the detection period, the terminal 1, the terminal 2, the terminal 3, and the terminal 4 first detect the wake-up signal, and if the wake-up signal is detected to be the wake-up signal 1, the terminal 1 and the terminal 2 continue to perform blind detection on the control channel, and the terminal 3 and the terminal 4 do not need to perform blind detection; when the terminal 1 detects the control information of itself, it receives data in the data channel; and terminal 2 does not detect its own control information, there is no need to receive data in the data channel. Therefore, by grouping the terminals, the terminals which do not extract the wake-up signals adopted by the terminals do not need to perform blind detection, and the power consumption of the terminals which do not need to receive data in the serving cell is effectively reduced. At the same time, the power savings increase with the number of packets. Of course, in order to achieve the purpose of saving power consumption under the condition of saving channel resources, in the embodiment of the present application, at least one terminal group in the terminal groups of the same serving cell has at least two terminals.

In an embodiment, the detection periods of different terminal groups may also be different, as shown in fig. 3, when the detection period of the terminal group 1 is in, the terminal 1 and the terminal 2 detect the wake-up signal; the

terminals

3 and 4 do not need to detect the wake-up signal. After the terminal 1 and the terminal 2 detect the wake-up signal, the blind detection is continuously carried out on the control channel, and when the terminal 1 detects own control information, the data is received in the data channel; and terminal 2 does not detect its own control information, there is no need to receive data in the data channel. Therefore, by configuring different detection periods for different terminal groups, the power consumption of terminals which do not need to receive data in the serving cell can be further reduced.

For the convenience of understanding, the technical solutions provided by the present disclosure are further described below with reference to the accompanying drawings.

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

The terminal device 101, the terminal device 102, the terminal device 103, and the terminal device 104 are all terminal devices in a serving cell.

The base station 105 will obtain the characteristic information of each terminal device in the process of accessing the terminal device 101, the terminal device 102, the terminal device 103 and the terminal device 104; dividing the terminal equipment 101 and the terminal equipment 102 into a terminal group 1 according to the characteristic information; terminal apparatus 103 and terminal apparatus 104 are divided into terminal group 2. The base station 105 sends the wake-up signal corresponding to the terminal group 1 and the time-frequency position to the terminal device 101 and the terminal device 102 through the downlink control information; and sending the wake-up signal corresponding to the terminal group 2 and the time-frequency position to the terminal device 103 and the terminal device 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 position of the wake-up signal.

If the base station 105 needs to send downlink data to the terminal device 101 and the terminal device 102, sending the wake-up signals corresponding to the terminal device 101 and the terminal device 102 and the time-frequency positions of the wake-up signals to the terminal devices; each terminal device detects the wake-up signal sent by the base station 105, and the terminal device 101 and the terminal device 102 perform blind detection on the downlink control channel if the wake-up signal for detecting the wake-up signal is the same as the stored wake-up signal; and terminal device 103 and terminal device 104 determine that the wake-up signal for detecting the wake-up signal is different from the stored wake-up signal, and do not perform the subsequent operation.

In the embodiment of the present application, the positional relationship among 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. Wherein, the terminal device 101 and the terminal device 102 are terminal group 1; terminal device 103 and terminal device 104 are terminal group 2. That is, the terminal devices may be grouped according to service requirements, for example, the intelligent meter reading in a cell is divided into one terminal group, and the environment monitoring device is divided into another terminal group. Of course, the grouping may also be performed according to other feature information, and the present application is not limited by this.

A detailed description is given below of a control channel detection method applied to the internet of things from a terminal side by using a specific embodiment.

Firstly, aiming at the terminal side of the Internet of things:

first, the terminal needs to complete preamble preparation work to know the wake-up signal of the terminal group where the terminal is located and the corresponding time-frequency position, and then can perform subsequent downlink control channel detection. As shown in fig. 6, a flow diagram of the preliminary preparation work for the terminal includes the following steps 601-603:

step 601: and in the process of accessing the base station, sending 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 base station can allocate a terminal group to the terminal according to the access timing, DRX (continuous non-reception) cycle, service characteristics, and other information in the configuration information.

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

Step 603: and generating the wake-up signal by the initial value according to a preset coding mode, and correspondingly storing the wake-up signal with the acquired time-frequency position.

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. Terminals with the same type can be divided into a group by grouping the terminals, so that when the base station sends downlink data, only the terminals to receive the data in the same service cell are divided into a group, and other groups of terminals do not need to perform blind detection on a downlink control channel, thereby reducing power consumption. As described above, grouping is performed according to the type of the terminal (for example, the intelligent meter reading in the serving cell is grouped into one group, and the environment monitor is grouped into one group), and if the base station sends downlink data for the intelligent meter reading, the environment monitor in the serving cell detects that the wake-up signal is different from the stored wake-up signal, blind detection on the downlink control channel is not performed, so that power consumption of the environment monitor is reduced.

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

In the first scheme, 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.

Therefore, the wake-up signals of different terminal groups are the same, and the wake-up signals of different terminal groups are modulated at different time-frequency positions, so that the terminal groups are distinguished. Therefore, when the terminal detects, whether the terminal has the wake-up signal or not is detected on the corresponding time-frequency position in the downlink control information according to the pre-stored time-frequency position. And if the detection result is yes, blind detection is carried out on the downlink control channel, and if the detection result is not yes, blind detection is not required to be carried out on the downlink control channel.

In this scheme, in order to further transmit the packet information to the terminal, the method may specifically be implemented as steps a1-a 2:

step A1: and acquiring an initial value of the wake-up signal from the system message of the broadcast channel or acquiring a uniform wake-up signal generation mode of each terminal.

The base station broadcasts the same information through the broadcast channel, so that the resource of the channel can be saved.

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

The execution sequence of the steps A1-A2 is not limited. If the first scheme is to be implemented, the wake-up signals may be distinguished by a time domain or a frequency domain. This is not limited in this application.

However, the scheme for distinguishing the terminal groups occupies a lot of resources, so the application also provides an optimized scheme, such as scheme two.

In the second scheme, 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.

Therefore, the awakening signals of different terminal groups are different, and the awakening signals of different terminal groups are modulated at the same time-frequency position, so that the terminal groups are distinguished. Therefore, when the terminal detects, whether the wake-up signal identical to the pre-stored wake-up signal exists or not is detected on the corresponding time-frequency position in the downlink control information according to the pre-stored time-frequency position. And if the detection result is yes, blind detection is carried out on the downlink control channel, and if the detection result is not yes, blind detection is not required to be carried out on the downlink control channel.

In this scheme, in order to further transmit the packet information to the terminal, the method may specifically be implemented as steps B1-B2:

step B1: and acquiring the time-frequency position of the wake-up signal from the system message of the broadcast channel.

Step B2: the initial value of the wake-up signal is obtained from the radio resource dedicated configuration information of the control channel.

The execution sequence of steps B1-B2 is not limited.

The terminal can execute blind detection on the downlink control channel after acquiring the own wake-up signal and the corresponding time-frequency position thereof. As shown in fig. 7, a schematic flow chart of the control channel detection method applied to the internet of things provided in the embodiment of the present application may include the following steps:

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

As mentioned above, 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 awakening signals of the same terminal group and the time frequency positions of the same terminal group are the same.

Step 702: and if the wake-up signal adopted by the terminal is extracted, blind detection is carried out on the downlink control channel.

In the embodiment of the present application, if the wake-up signal adopted by the terminal is not extracted, the subsequent operation does not need to be executed.

Therefore, by grouping the terminals in the serving cell, when the base station sends downlink data to the terminal to be received in the serving cell, the power consumption of the terminal which does not need to receive the data in the serving cell can be effectively reduced.

In the embodiment of the present application, different detection methods may be performed according to different schemes. As described above, if the scheme one (i.e. 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) is adopted to distinguish different terminal groups, the step 702 may be specifically implemented as the steps C1-C2:

step C1: and extracting the wake-up signal at the time-frequency position of the wake-up signal of the terminal group corresponding to the terminal.

Step C2: and if the wake-up signal is extracted, blind detection is carried out on the downlink control channel.

Therefore, when the terminal detects, whether the terminal has the wake-up signal or not is detected on the corresponding time-frequency position in the downlink control information according to the pre-stored time-frequency position. And if so, carrying out blind detection on the downlink control channel. If no wake-up signal is detected, no blind detection is performed.

Therefore, different time-frequency positions are allocated to the terminals in the service cell, the terminals are grouped, when the base station sends downlink data to the terminals to be received in the service cell, only the terminal corresponding to the time-frequency position where the wake-up signal is located is subjected to blind detection, and therefore power consumption of the terminals which do not need to receive the data in the service cell can be effectively reduced.

In the above, a specific method for detecting the wake-up signal by the terminal in the first scheme is introduced, and in the following, for a specific method that is adopted when the different terminal groups are distinguished in the second scheme (i.e., the wake-up signals of the different terminal groups are different, but the time-frequency positions of the wake-up signals of the different terminal groups are the same), step 602 may be specifically implemented as steps D1-D2:

step D1: and taking a sampling point of the wake-up signal on the time sequence as a reference, carrying out convolution calculation on the wake-up signal of the terminal along the time sequence, and determining a calculation result.

The accuracy of the time synchronization requirement between the terminal of the internet of things and the base station can be reduced by performing convolution calculation on the wake-up signal of the terminal along the time sequence.

Step D2: and if the calculation result has a peak value, performing blind detection on the downlink control channel.

In the embodiment of the present application, if the calculation result does not have a peak value, blind detection is not performed.

Therefore, different wake-up signals are distributed to the terminals in the service cell to group the terminals, when the base station sends downlink data to the terminals to be received in the service cell, the convolution calculation is carried out, and the terminals with peak values in the calculation result are subjected to blind detection, so that the power consumption of the terminals which do not need to receive the data in the service cell can be effectively reduced. And by distributing different wake-up signals for the terminals in the service cell, resources in the downlink control information can be saved.

In an embodiment, the terminal determines the sampling point and the signals within the front and rear predetermined ranges based on the sampling point of the wake-up signal in the time sequence, as shown in fig. 8, which is a structural diagram of a part of downlink control information, where the part of downlink control information is divided into 7 time-frequency positions (numbered from left to right sequentially from 0 to 6), a black area (numbered with 3 time-frequency positions) is the sampling point, and areas containing vertical lines (numbered with 2 and 4 time-frequency positions) are signals obtained based on the sampling point. The signals in the black areas and in the areas containing vertical lines, i.e. the areas of time-frequency positions numbered 2-4, are converted into time-domain signals by means of FFT (fast fourier transform). And carrying out convolution calculation on the pre-stored wake-up signal and the converted time domain signal, and determining whether the wake-up signal corresponding to the terminal exists according to the peak value.

By acquiring a segment of signal containing the wake-up signal, strict time synchronization of the acquired signal is not required, thereby saving the time for determining the wake-up signal.

In the embodiment of the present application, once the terminal group is determined to be unchanged, the terminal group may be subdivided for terminals in one serving cell according to actual requirements. For example, along with the interaction between the terminal and the base station, the base station may reallocate the terminal group to the terminal according to the interaction information, and send the updated information to the terminal, which may be specifically implemented as: and acquiring 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 (RRCConnectionSetup-NB message). Therefore, the base station redistributes the terminal groups of the terminals, so that when the information of the terminals is not matched with the current terminal group after being changed, the terminal groups can still be re-divided to be matched with the terminal group, and the purposes that the same terminal group can use the same wake-up signal and the corresponding time-frequency position of the same wake-up signal and the service cannot be influenced are achieved.

The control channel detection method applied to the internet of things is introduced mainly through the terminal side, and the control channel detection applied to the internet of things is described in detail through a specific embodiment from the base station side.

Secondly, aiming at the base station side:

similarly, the base station also needs to complete preamble preparation. As shown in fig. 9, the method for obtaining the configuration information of the terminal after the base station is connected to the terminal may specifically be implemented as steps 901 and 903:

step 901: and acquiring the characteristic information of the terminal in the process of accessing the terminal.

Step 902: and distributing a terminal group for the terminal according to the characteristic information.

Step 903: and sending 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.

Terminals with the same type can be divided into a group by grouping the terminals, so that when the base station sends downlink data, the terminals to receive the data are grouped, and other groups of terminals do not need to perform blind detection on a downlink control channel, thereby reducing power consumption. As described above, the base station groups according to the type of the terminal (for example, the intelligent meter reading in the serving cell is grouped into one group, and the environment monitor is grouped into one group), and if the base station sends downlink data for the intelligent meter reading, the environment monitor in the serving cell detects that the wake-up signal is different from the stored signal, the downlink control channel is not blindly detected, so that the power consumption of the environment monitor is reduced.

In the embodiment of the application, different terminal groups can be distinguished through two schemes.

In the first scheme, 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. Therefore, the wake-up signals of different terminal groups are the same, and the wake-up signals of different terminal groups are modulated at different time-frequency positions, so that the terminal groups are distinguished.

In this scheme, in order to further transmit the packet information to the terminal, the method may specifically be implemented as steps E1-E2:

step E1: and broadcasting the initial value of the wake-up signal or the uniform wake-up signal generation mode of each terminal through the system message of the broadcast channel.

Wherein broadcasting the same information through the broadcast channel can save the resources of the channel.

Step E2: and sending the time-frequency position of the wake-up signal corresponding to the terminal group to the terminal through the special configuration information of the wireless resource of the terminal.

In the second scheme, 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. Therefore, the awakening signals of different terminal groups are different, and the awakening signals of different terminal groups are modulated at the same time-frequency position, so that the terminal groups are distinguished.

In this scheme, in order to further transmit the packet information to the terminal, the steps F1 to F2 may be specifically implemented as:

step F1: and broadcasting the time-frequency position of the wake-up signal through a system message of a broadcast channel.

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

In the above description, how to distinguish the terminal groups and how to allocate the terminal groups are described, the method for detecting the downlink control channel is further described below. Fig. 10 is a schematic flow chart of a control channel detection method applied to the internet of things, including the following steps:

step 1001: and the base station determines a terminal group in a service cell of each terminal to be received.

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 signals of the same terminal group and the time frequency positions of the wake-up signals are the same.

Step 1002: and modulating 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: and sending the modulated time frequency position to a terminal through downlink control information.

In this embodiment of the present application, along with the interaction between the terminal and the base station, the base station may reassign the terminal group to the terminal according to the interaction information, and send the updated information to the terminal, which may be specifically implemented as steps G1-G3:

step G1: and reallocating the terminal group for the terminal according to the characteristics of the uplink data sent by the terminal.

Wherein the characteristics of the uplink data comprise at least one of the following: amount of data, transmission period, etc. In the specific implementation, the method can also be executed according to the transmitted data content. Certainly, in the specific implementation, when dividing, the same terminal group can use the same wake-up signal and the corresponding time-frequency position thereof without affecting the service thereof.

Step G2: and updating the wake-up signal for the terminal according to the redistributed terminal group.

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

Terminals with the same type can be divided into a group by grouping the terminals, so that when the base station sends downlink data, the terminals to receive the data are grouped, and other groups of terminals do not need to perform blind detection on a downlink control channel, thereby reducing power consumption.

In order to facilitate systematic understanding of the technical solutions provided in the embodiments of the present application, a further description is provided below by using specific examples, where the embodiments are used for distinguishing the situations of serving cells of terminals by using different wake-up signals of different terminal groups and using the same time-frequency position of the wake-up signal. The serving cell includes four terminals, i.e., terminal 1, terminal 2, terminal 3, and terminal 4. The

terminals

1 and 2 belong to a terminal group 1, and the

terminals

3 and 4 belong to a terminal group 2; the terminal group 1 needs to receive data and the terminal group 2 does not need to receive data. As shown in fig. 11, taking a terminal 1 and a terminal 3 as examples, a technical solution provided in the embodiment of the present application is explained; the terminal 1 belongs to a terminal group 1 and needs to receive data; while terminal 3 data terminal group 2 does not need to receive data. The method comprises the following steps:

step 1101: and the terminal 1 and the terminal 3 respectively send the characteristic information to the base station in the process of accessing the base station.

Step 1102: and the base station distributes a terminal group for the terminal 1 and the terminal 3 according to the characteristic information.

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

Step 1104: and the terminal 1 and the terminal 3 generate the awakening signal from the initial value according to a preset coding mode and correspondingly store the awakening signal and the acquired time-frequency position.

Step 1105: the base station determines the terminal group in the serving cell of the terminal 1 as the terminal group 1.

Step 1106: and 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 the downlink control information.

Step 1108: and 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: and the terminal 1 and the terminal 3 perform convolution calculation on the wake-up signal of the terminal along the time sequence by taking the sampling point of the wake-up signal on the time sequence as a reference, and determine a calculation result.

Step 1111: and if the calculation result of the terminal 1 has a peak value, blind detection is carried out on the downlink control channel.

Step 1112: and if the calculation result of the terminal 3 does not have a peak value, blind detection is not carried out on the downlink control channel.

Based on the same inventive concept, the embodiment of the application also provides a terminal and network side equipment. As shown in fig. 12, a terminal provided for an embodiment of the present application includes: at least one processor 1200, and at least one memory 1201 and at least one transceiver 1202, wherein the memory 1201 stores program code that, when executed by the processor 1200, causes the processor 1200 to perform the following:

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 perform:

taking a sampling point of the wake-up signal on a time sequence as a reference, carrying out convolution calculation on the wake-up signal of the terminal along the time sequence, and determining a calculation result;

and if the calculation result has a peak value, performing blind detection 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 perform:

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

And if the wake-up signal is extracted, blind detection is carried out on the downlink control channel.

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

in the process of accessing the base station, sending the characteristic information of the terminal to the base station so that the base station distributes a terminal group for the terminal according to the characteristic information;

acquiring a time frequency position of an awakening signal corresponding to the distributed terminal group and an initial value of the awakening signal from downlink control information sent by the base station;

and generating the wake-up signal by the initial value according to a preset coding mode, and correspondingly storing the wake-up signal with the acquired time-frequency position.

the processor 1200 is specifically further configured to perform:

acquiring a time-frequency position of a wake-up signal from a system message of a broadcast channel; and;

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

the processor 1200 is specifically further configured to perform:

Acquiring an initial value of a wake-up signal from a system message of a broadcast channel or a uniform wake-up signal generation mode of each terminal; and;

and acquiring the time-frequency position of the wake-up signal from the radio resource special configuration information of the control channel.

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

and acquiring 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.

Fig. 13 shows a network-side device provided in this embodiment of the present application. The network side device includes: at least one processor 1300, and at least one memory 1301 and at least one transceiver 1302, wherein the memory 1301 stores program code, which when executed by the processor 1300, causes the processor 1300 to perform the following:

Optionally, the processor 1300 is specifically configured to perform:

acquiring characteristic information of the terminal in the process of accessing the terminal;

distributing a terminal group for the terminal according to the characteristic information;

and sending 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.

the processor 1300 is specifically configured to perform:

broadcasting the time frequency position of the wake-up signal through a system message of a broadcast channel; and;

and sending the initial value of the wake-up signal corresponding to the terminal group to the terminal through the special configuration information of the wireless resource of the terminal.

the processor 1300 is specifically configured to perform:

Broadcasting an initial value of a wake-up signal or a uniform wake-up signal generation mode of each terminal through a system message of a broadcast channel; and;

and sending the time-frequency position of the wake-up signal corresponding to the terminal group to the terminal through the special configuration information of the wireless resource of the terminal.

Optionally, the processor 1300 is specifically configured to perform:

reallocating a terminal group for a terminal according to the characteristics of uplink data sent by the terminal; wherein the uplink data is characterized by at least one of the following: data volume, transmission period;

and updating the wake-up signal for the terminal according to the redistributed terminal group.

Optionally, the processor 1300 is specifically configured to perform:

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, sending the initial values of the wake-up signals corresponding to the redistributed terminal groups to the terminals through wireless resource control connection setting information;

and 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, sending the time-frequency positions of the corresponding wake-up signals of the reallocated terminal groups to the terminals through the wireless resource control connection setting information.

Fig. 14 is a schematic diagram of another terminal in the embodiment of the present application. The terminal includes:

an extracting module 1401, configured to extract the wake-up signal from the received downlink control information according to a time-frequency position where the wake-up signal is located; the terminal belongs to a terminal group, and the terminal group is obtained by grouping a base station according to the characteristic information of the terminal in a service cell of the terminal; the wake-up signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

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

Further, the extraction module 1401 includes:

and the extraction unit is used for extracting a signal which can contain the time-frequency position and has the length larger than the time-frequency position from the received downlink control information by taking the time-frequency position as a reference.

Furthermore, 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 calculating unit is used for carrying out convolution calculation on the awakening signal of the terminal along the time sequence by taking the sampling point of the awakening signal on the time sequence as a reference so as to determine a calculation result;

And the first blind detection unit is used for carrying out blind detection on the downlink control channel if the calculation result has a peak value.

Furthermore, 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:

the extraction unit is used for 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;

and the second blind detection unit is used for carrying out blind detection on the downlink control channel if the wake-up signal is extracted.

Further, the apparatus further comprises:

a first sending module, configured to, before the extracting module 1401 extracts the wake-up signal from the received downlink control information according to the time-frequency position of the wake-up signal, send, in the process of accessing the base station, the feature information of the terminal to the base station, so that the base station allocates a terminal group to the terminal according to the feature information;

a first obtaining module, configured to obtain, from the downlink control information sent by the base station, a time-frequency position where an awake signal corresponding to the allocated terminal group is located and an initial value of the awake signal;

and the storage module is used for generating the wake-up signal from the initial value according to a preset coding mode and correspondingly storing the wake-up signal with the acquired time-frequency position.

Furthermore, 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 acquisition unit is used for acquiring the time-frequency position of the wake-up signal from the system message of the broadcast channel;

a second obtaining unit, configured to obtain an initial value of the wake-up signal from the radio resource dedicated configuration information of the control channel.

Furthermore, 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:

a third obtaining unit, configured to obtain an initial value of the wake-up signal from a system message of the broadcast channel, or a uniform wake-up signal generation manner of each terminal;

and a fourth obtaining unit, configured to obtain the time-frequency position where the wake-up signal is located from the radio resource dedicated configuration information of the control channel.

Further, the device also comprises:

and the second acquisition module is used for acquiring 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.

Fig. 15 is a schematic diagram of another network-side device in the embodiment of the present application. The network side device includes:

A determining module 1501, configured to determine, for each terminal to receive data, a terminal group in a serving cell where the terminal is located; 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 signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

a modulation module 1502, configured to modulate the wake-up signal corresponding to the terminal group to a time-frequency position where the wake-up signal of the terminal group is located;

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

Further, the apparatus further comprises:

a third obtaining module, configured to determine, by using the determining module 1501, for each terminal to receive data, before determining a terminal group in a serving cell where the terminal is located, in a process of accessing the terminal, obtain feature information of the terminal;

the distribution module is used for distributing terminal groups for the terminals according to the characteristic information;

and the third sending module is used for sending 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.

Furthermore, 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 comprises:

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

and a first sending unit, configured to send the initial value of the wake-up signal corresponding to the terminal group to the terminal through the radio resource dedicated configuration information of the terminal.

Furthermore, 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 comprises:

the second broadcasting unit is used for broadcasting the initial value of the wake-up signal or the uniform wake-up signal generation mode of each terminal through the system message of the broadcasting channel;

and the second sending unit is used for sending the time-frequency position of the wake-up signal corresponding to the terminal group to the terminal through the special configuration information of the wireless resource of the terminal.

Further, the apparatus further comprises:

the redistribution module is used for redistributing terminal groups for the terminals according to the characteristics of uplink data sent by the terminals; wherein the characteristics of the uplink data comprise at least one of the following: data volume, transmission period;

And the updating module is used for updating the awakening signal for the terminal according to the redistributed terminal group.

An embodiment of the present invention further provides a computer-readable non-volatile storage medium, which includes a program code, and when the program code runs on a computing terminal, the program code is configured to enable the computing terminal to execute the steps of the method for detecting a control channel applied to the internet of things according to the embodiment of the present invention.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A control channel detection method applied to the Internet of things is characterized by comprising the following steps:

if the wake-up signal adopted by the terminal is extracted, blind detection is carried out on a downlink control channel;

when 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 adopted by the terminal is extracted, blind detection is performed on the downlink control channel, and the blind detection specifically includes:

Taking a sampling point of the wake-up signal on the time sequence as a reference, carrying out convolution calculation on the wake-up signal of the terminal along the time sequence, and determining a calculation result;

if the calculation result has a peak value, blind detection is carried out on the downlink control channel;

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 includes:

and receiving an updated terminal group which is sent by the base station and to which the terminal belongs, wherein the updated terminal group is determined by reallocating the terminal group of the terminal after the base station acquires 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.

2. The method according to claim 1, wherein when 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;

3. 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 of the wake-up signal, the method further comprises:

4. The method of claim 3, 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 acquiring, from the downlink control information sent by the base station, a time-frequency position where an awake signal corresponding to the allocated terminal group is located and an initial value of the awake signal specifically includes:

Acquiring a time-frequency position of a wake-up signal from a system message of a broadcast channel; and the number of the first and second groups,

5. The method according to claim 3, 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;

acquiring an initial value of a wake-up signal from a system message of a broadcast channel or a uniform wake-up signal generation mode of each terminal; and the number of the first and second groups,

6. A control channel detection method applied to the Internet of things is characterized by comprising the following steps:

the base station determines a terminal group in a service cell of each terminal to be received; 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 signals of the same terminal group and the time frequency positions of the wake-up signals are the same;

sending the modulated time frequency position to a terminal through downlink control information;

when the awakening signals of different terminal groups determined by the base station are different and the time-frequency positions of the awakening signals of the different terminal groups are the same, the awakening signals are used for indicating the terminals in the different terminal groups to carry out convolution calculation on the awakening signals of the terminals along a time sequence by taking the sampling points of the awakening signals on the time sequence as the reference, and blind detection is carried out on a downlink control channel according to the calculation result;

after the base station determines, for each terminal to receive data, a terminal group in a serving cell where the terminal is located, the method further includes:

and after acquiring 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, reallocating the updated terminal group to which the terminal belongs to the terminal group of the terminal, and sending the updated terminal group to which the terminal belongs to the terminal.

7. The method of claim 6, wherein the base station determines, for each terminal to receive data, before determining the terminal group in the serving cell where the terminal is located, the method further comprises:

8. A terminal, characterized in that the terminal comprises: a processor, a memory, and a transceiver;

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 processor is further configured to:

9. A network side device, comprising: a processor, a memory, and a transceiver;

after the base station determines, for each terminal to receive data, a terminal group in a serving cell where the terminal is located, the processor is further configured to: