WO2020088477A1

WO2020088477A1 - Communication method and device

Info

Publication number: WO2020088477A1
Application number: PCT/CN2019/114130
Authority: WO
Inventors: 冯淑兰
Original assignee: 华为技术有限公司
Priority date: 2018-10-31
Filing date: 2019-10-29
Publication date: 2020-05-07
Also published as: CN111132279A

Abstract

Embodiments of the present invention provide a communication method and device. The method comprises: determining a first listening time according to a rule, and detecting a PDCCH transmitted in a first search space set at the first listening time, so as to detect the search space set at the determined listening time according to the rule, so that the power consumption of a terminal device can be reduced without increasing service delay.

Description

Communication method and equipment

Technical field

The embodiments of the present invention relate to the field of communication technologies, and in particular, to a communication method and device.

Background technique

The search space set (search space set) is defined as the time resource that carries the terminal device to detect the physical downlink control channel (Physical Downlink Control CHannel, PDCCH). The search space set contains multiple listening times. The terminal device needs to detect the PDCCH transmitted by the search space set at the corresponding listening time of the search space set. The terminal device detects the network device and sends it to the terminal during the listening time of the search space set. In the case of the PDCCH of the device, the terminal device performs corresponding reception or transmission according to the instructions of the Downlink Control Information (DCI) carried on the PDCCH of the terminal device. When the PDCCH sent by the network device to the terminal device is detected, the terminal device waits for the listening time of the next search space set. The listening time defined in the prior art has a certain periodicity, and the communication data is generally burst data packets. In many cases, the terminal device cannot detect and send to the terminal during the listening time of the search space set The PDCCH of the device, but the terminal device detecting the PDCCH transmitted by the search space set needs to consume a lot of resources, so that the power consumption of the terminal device is increased. In order to reduce the power consumption of the terminal device, one way is to increase the period in which the terminal device detects the listening time of the PDCCH transmitted by the search space set. However, since the services of the terminal device have burst services and periodic services, increasing the period of detecting the PDCCH listening time transmitted by the search space set transmission will increase the service delay.

Summary of the invention

Embodiments of the present invention provide a communication method and device for reducing power consumption of a terminal device without causing an increase in service delay.

A first aspect provides a communication method that determines a first listening time according to rules, and detects the PDCCH transmitted in the first search space set at the first listening time. It can be seen that the listening time for detecting the PDCCH transmitted by the search space set is not fixed, but can be determined according to rules. Therefore, the power consumption of the terminal device can be reduced without causing an increase in service delay.

In one embodiment, the DCI including the time information of the terminal device detection search space set carried on the PDCCH of the terminal device transmitted in the second search space set may be detected at the second listening time, and the first Listening time. It can be seen that the listening time for detecting the PDCCH transmitted by the search space set can be determined according to the time information sent by the network device. Therefore, the power consumption of the terminal device can be reduced without causing an increase in service delay.

In one embodiment, the time information may be the time when the terminal device detects the first search space set, or the time interval between the time when the terminal device detects the first search space set and the second listening time, or The number of listening times between the time when the terminal device detects the first search space set and the second listening time, and the detection between the time when the terminal device detects the first search space set and the second listening time Number of listening cycles.

In one embodiment, the listening time of the third search space set or the listening time of multiple search space sets (ie, one or more search space sets) may be first counted to detect the first PDCCH sent to the terminal device The number of times, or counting the listening time of the fourth search space set or the second number of times the listening time of multiple search space sets (ie, one or more search space sets) does not detect the PDCCH sent to the terminal device, Then, the listening period of the terminal device is adjusted according to the first or second times. It can be seen that the listening period of the terminal device can be dynamically adjusted according to the statistical number of times the PDCCH sent to the terminal device is detected or not detected during the listening time, therefore, the power consumption of the terminal device can be reduced without causing service delay increase. The listening period is the period for detecting the set of search spaces. The listening period is greater than or equal to the first threshold and less than or equal to the second threshold, that is, although the listening period can be adjusted dynamically, it can only be adjusted within a certain range, so as to ensure that the listening period is not too short, nor It will be too long.

In one embodiment, in the case where the first number of times is greater than or equal to the third threshold, the listening period of the terminal device can be reduced, that is, when the network device sends more PDCCHs to the terminal device, it can be reduced The listening period of the small terminal device, so that the terminal device can not miss the PDCCH sent to the terminal device, so as not to cause an increase in service delay. When the second number of times is greater than or equal to the fourth threshold, the listening period of the terminal device can be increased, that is, when the network device sends less PDCCH to the terminal device, the listening period of the terminal device can be increased So that the power consumption of the terminal device can be reduced. Therefore, the listening period can be dynamically adjusted according to the number of times the PDCCH of the terminal device is detected or not detected during the listening time, so that the power consumption of the terminal device can be reduced without causing an increase in service delay.

In one embodiment, the default search space set configuration from the network device can be received, and the fifth search space set corresponding to the default search space set configuration is detected at the first time, and the terminal device only needs to detect the default search space set, therefore, it can be reduced The number of detections of the terminal device, so that the power consumption of the terminal device can be reduced.

In one embodiment, after receiving the default search space set configuration from the network device, it may also receive dynamic signaling or media access control (MAC) signaling from the network device that carries the trigger instruction, and according to The trigger instruction detects a search space set other than the fifth search space set, so that the terminal device can detect a search space set other than the default search space set according to the trigger instruction of the network device.

The second aspect provides a communication method, which determines the first listening time according to the rule, and transmits the PDCCH in the first search space set at the first listening time. Since the listening time of the terminal device needs to be consistent with the listening time of the terminal device determined by the network device, it can be seen that the listening time of the PDCCH detected by the terminal device to detect the search space set transmission is not fixed but can be performed according to rules Certainly, therefore, the power consumption of the terminal device can be reduced without causing an increase in service delay.

In one embodiment, the time information of the search space set detected by the terminal device may be determined first, and then the first listening time may be determined according to the time information. At the same time, the second search time may be sent to the The terminal device transmits the PDCCH of the terminal device, and the PDCCH carries DCI including time information, and the time information may instruct the terminal device to determine the first listening time according to the time information. It can be seen that the terminal device can determine the listening time for detecting the PDCCH transmitted by the search space set according to the time information sent by the network device. Therefore, the power consumption of the terminal device can be reduced without causing an increase in service delay.

In one embodiment, the listening time of the third search space set or the listening times of multiple search space sets may be counted first to send the PDCCH the first time to the terminal device, or the listening time of the fourth search space set may be counted Or the listening times of multiple search space sets do not send the second number of PDCCHs to the terminal device, and then the listening period of the terminal device is adjusted according to the first number or the second number of times. Since the terminal device needs to be consistent with the listening time of the terminal device in the network device, it can be seen that the listening period of the terminal device can be dynamically adjusted according to the statistics of the number of PDCCHs sent to or not sent to the terminal device during the listening time Therefore, the power consumption of the terminal device can be reduced without increasing the service delay. In addition, since the listening time in the network device and the terminal device are consistent, the network device can transmit the PDCCH of the terminal device to the terminal device at the listening time of the terminal device, so that the terminal device can detect the PDCCH sent to itself, so that Does not cause an increase in business delay. The listening period is the period for detecting the set of search spaces. The listening period is greater than or equal to the first threshold and less than or equal to the second threshold, that is, although the listening period can be adjusted dynamically, it can only be adjusted within a certain range, so as to ensure that the listening period is not too short, nor It will be too long.

In one embodiment, when the first number of times is greater than or equal to the third threshold, the listening period of the terminal device is reduced, and when the second number of times is greater than or equal to the fourth threshold, the terminal device is increased Listening cycle. Therefore, it is possible to dynamically increase or decrease the listening period of the terminal device according to the number of times the terminal device's PDCCH is sent to or not sent to the terminal device at the listening time, thereby reducing the power consumption of the terminal device without causing traffic Increase in latency.

In one embodiment, a default search space set configuration may be sent to the terminal device, and the default search space set configuration may instruct the terminal device to detect the fifth search space set corresponding to the default search space set configuration at the first time. The default search space set configuration may be information such as the identification and transmission time of the default search space set. It can be seen that the network device can instruct the terminal device to detect only the default search space set, therefore, the number of detections of the terminal device can be reduced, thereby reducing the power consumption of the terminal device

In one embodiment, after sending the default search space set configuration to the terminal device, the terminal device may be sent dynamic signaling or MAC signaling carrying a trigger instruction, and the trigger instruction may instruct the terminal device to detect the fifth search space set In addition to the search space set, it can be seen that the network device can activate the terminal device to detect the search space set other than the default search space set by means of instructions when there is a service requirement.

The third aspect provides a communication device, which may be a terminal device or a chip in the terminal device. The device may include a processing unit and a transceiver unit. When the apparatus is a terminal device, the processing unit may be a processor, and the transceiving unit may be a transceiver; the terminal device may further include a storage unit, the storage unit may be a memory; the storage unit is used to store instructions, the processing The unit executes the instructions stored in the storage unit, so that the terminal device performs the corresponding function in the first aspect described above. When the device is a chip in a terminal device, the processing unit may be a processor, and the transceiver unit may be an input / output interface, a pin, or a circuit, etc .; the processing unit executes instructions stored in the storage unit to enable the terminal The device performs the corresponding function in the first aspect described above. The storage unit may be a storage unit within the chip (eg, registers, cache, etc.), or a storage unit located outside the chip within the terminal device (eg, only Read memory, random access memory, etc.).

The fourth aspect provides a communication device, which may be a network device or a chip in the network device. The device may include a processing unit and a transceiver unit. When the apparatus is a network device, the processing unit may be a processor, and the transceiving unit may be a transceiver; the network device may further include a storage unit, and the storage unit may be a memory; the storage unit is used to store instructions, the processing The unit executes the instructions stored by the storage unit, so that the network device performs the corresponding function in the second aspect. When the device is a chip in a network device, the processing unit may be a processor, and the transceiver unit may be an input / output interface, a pin, or a circuit, etc .; the processing unit executes instructions stored in the storage unit to enable the network The device performs the corresponding function in the second aspect above, and the storage unit may be a storage unit within the chip (eg, registers, cache, etc.), or a storage unit located outside the chip within the network device (eg, only Read memory, random access memory, etc.).

A fifth aspect provides a storage medium on which a program is stored, and when the program is run, it implements the first aspect or any embodiment of the first aspect, or the second aspect or any implementation of the second aspect Examples of communication methods provided.

A sixth aspect provides a computer program product, the computer program product including computer program code, when the computer program code is executed by a communication device (for example, a terminal device or a network device), any one of the first aspect or the first aspect is realized. An embodiment, or the communication method provided in the second aspect or any embodiment of the second aspect.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present invention;

2 is a schematic diagram of a search space set listening time provided by an embodiment of the present invention;

3 is a schematic flowchart of a communication method according to an embodiment of the present invention;

4 is a schematic flowchart of another communication method according to an embodiment of the present invention;

5 is a schematic flowchart of yet another communication method provided by an embodiment of the present invention;

6 is a schematic structural diagram of a communication device according to an embodiment of the present invention;

7 is a schematic structural diagram of another communication device according to an embodiment of the present invention;

8 is a schematic structural diagram of yet another communication device provided by an embodiment of the present invention;

9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

10 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;

11 is a schematic structural diagram of yet another terminal device according to an embodiment of the present invention.

detailed description

Embodiments of the present invention provide a communication method and device for reducing power consumption of a terminal device without causing an increase in service delay. The details are described below.

In order to better understand a communication method and device provided by the embodiments of the present invention, the network architecture used by the embodiments of the present invention will be described below. Please refer to FIG. 1, which is a schematic diagram of a network architecture provided by an embodiment of the present invention. As shown in FIG. 1, the network architecture may include terminal device 1 and network device 2, and radio wave, visible light, laser, infrared light, photon, power line, coaxial cable, and copper strand may be used between terminal device 1 and network device 2. Line etc. to communicate. The terminal device 1 may also be a user equipment (User Equipment, UE) or a subscriber station (Subscriber Station, SS). The network device 2 may be a base station, a wireless access point, a transceiver station, a relay station, a cell, a transceiver point (Transmission and Receive Point, TRP), an evolved base station (Evolved Node, Base Station, eNB), a next-generation base station (next generation node) station, gNB), etc. The network device 2 is used to send the PDCCH to the terminal device 1, and indicates the information of the resource used to receive or transmit the signal through the PDCCH. The terminal device 1 is used to detect the PDCCH, and in the case of detecting its own PDCCH, obtain the information of the resource receiving or transmitting the signal from the signaling carried by the PDCCH, and receive or send the signal on the resource corresponding to the information, For example, receiving a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) or sending a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).

In order to better understand a communication method and device provided by the embodiments of the present invention, an application scenario used by the embodiments of the present invention will be described below. Generally, DCI is carried on the PDCCH, and the network device configures the terminal device with time and frequency resources for detecting the PDCCH. Control resource set (ControlReset, CORESET) defines the frequency resource carrying the PDCCH and the time domain length of the signaling carrying the PDCCH. The search space set is the time and frequency resource set carrying the PDCCH. The time domain resource of the search space set is called the search The monitoring time of the space set (monitor), because the search space set is used to carry the PDCCH, is also called the listening time of the PDCCH, and is used to instruct the terminal device to detect the time resource of the PDCCH. Please refer to FIG. 2, which is a schematic diagram of a search space set listening time according to an embodiment of the present invention. As shown in FIG. 2, the search space set listening time configured by the network device to the terminal device includes a listening period, a listening offset, a listening duration, and a listening symbol bitmap. The listening period is used to instruct the terminal device to detect the listening time of the search space set, which is usually measured in units of time slots. Listening offset, used to indicate that within a listening period, the terminal device detects the offset of the first listening time of the search space set from the beginning of the period. When measured in time slot units, the listening offset The quantity is used to indicate that within a listening period, the terminal device detects the time offset of the time slot where the first listening time of the search space set is located from the first time slot of the period. The listening duration is used to indicate the number of consecutive time slots in which the terminal device detects the listening time of the search space set during a listening period. The listening symbol bitmap indicates the starting position of the listening time of the search space set in a time slot in the form of a bitmap. As shown in FIG. 2, a time slot includes 14 symbols, and each symbol can correspond to One bit, the symbol position corresponding to the bit value 1 indicates the start position of the listening time of a search space set. Among them, the duration of one listening in the search space set is equal to the length of the time domain given in CORESET.

Based on the network architecture shown in FIG. 1, please refer to FIG. 3, which is a schematic flowchart of a communication method according to an embodiment of the present invention. Among them, the communication method is described from the perspective of the terminal device. As shown in FIG. 3, the communication method may include the following steps.

301: Determine the first listening time according to the rules.

In this embodiment, the first listening time may be determined according to the rules, which may be that the time included in the PDCCH of the terminal device transmitted in the second search space set and including the terminal device detecting the search space set is first detected at the second listening time DCI of the information, and then determine the first listening time according to the time information. The time information may be time information for the next detection of the search space set by the terminal device, or may be time information for the next detection of the search space set. There may or may not be other listening time between the first listening time and the second listening time. When there are other listening times between the first listening time and the second listening time, the terminal device may detect the set of search spaces during these listening times, or may not detect the set of search spaces.

In this embodiment, the time information may be the time when the terminal device detects the search space set, that is, the network device may send the specific time when the terminal device detects the search space set to the terminal device. The time information may also be a time interval between the time when the terminal device detects the search space set and the second listening time, that is, how long after the terminal device receives the time information, the search space set is detected. The time information may also be the number of listening times between the time when the terminal device detects the search space set and the second listening time, that is, the terminal device detects the search space set after several listening times after receiving the time information. The time information may also be the number of listening cycles between the time when the terminal device detects the search space set and the second listening time, that is, the terminal device detects the search space set after a few listening cycles after receiving the time information. One specific implementation method is that the terminal device detects the PDCCH sent to the terminal device in the Nth listening time (corresponding to the second listening time) of the search space set 1 (referred to as SS1, corresponding to the second search space). If the PDCCH sent to the terminal device is successfully detected and the DCI contained in the PDCCH contains the time information of the next detection of the search space set 1 by the terminal device, the terminal device determines the next detection search based on the time information The listening time of space set 1 (corresponding to the first listening time). One of the implementation methods is that the time information indicates the next time to listen to the search space set 1. If the second listening time is in M time slots and the time information is K, then the next time that the terminal device detects the search space set 1 the listening time is (M + K) time slot. The second implementation method is that the time information indicates the number of listening times between the next listening search space set 1 and the current listening time, for example, the terminal device is currently the Mth listening time of the search space, and the time information indicates The number of listening time between the next listening search space set 1 and the current listening time is K, then the terminal device detects the search space set 1 at the (M + K) th listening time after the current listening time. The third implementation method is that the time information indicates the number K of the listening period between the time when the terminal device detects the search space set 1 and the current listening time, then the terminal device detects the Kth detection period after the current listening time Listening cycle detection search space set 1.

The second specific fact method is that the terminal device detects the PDCCH sent to the terminal device in the Nth listening time (corresponding to the second listening time) of the search space set 2 (referred to as SS2, corresponding to the second search space). If the PDCCH sent to the terminal device is successfully detected and the DCI included in the PDCCH contains the time information of the next detection of search space set 1 by the terminal device, the terminal device determines the next detection search based on the time information The listening time of space set 1 (corresponding to the first listening time). One of the implementation methods is that the time information indicates the next time when the search space set 1 is listened to. If the second listening time is in the Mth time slot and the time information is K, the terminal device next detects that the listening time for the search space set 1 is the (M + K) th time slot. The second implementation method is that the time information indicates the number of listening times between the next listening search space set 1 and the current listening time, for example, the terminal device is currently the Mth listening time of the search space, and the time information indicates The number of listening times between the next listening search space set 1 and the current listening time is K, then the terminal device detects the search space set 1 at the (M + K) th listening time after the current listening time, here The number of times of listening time may be only the number of times of listening time of search space set 1, the number of times of listening time of search space set 2 may also be counted, or the time of listening time and search space of search space 1 may be counted The number of times of listening time of set 2, further, if the terminal device also needs to detect the search space set 3, it may further include the number of times of listening time of the search space set 3, and so on. The third implementation method is that the time information indicates the number K of the listening period between the time when the terminal device detects the search space set 1 and the current listening time, then the terminal device detects the Kth detection period after the current listening time The listening period detects the search space set 1, and the listening period here may be the listening period of the search space set 1, or the listening period of the search space set 2, preferably the search period of the search space set 1.

In this embodiment, the first listening time is determined according to the rule, or it may be that the listening time of the third search space set or the listening time of multiple search space sets is first counted to detect the first PDCCH sent to the terminal device The number of times, or count the listening time of the fourth search space set or the listening times of multiple search space sets without detecting the second number of PDCCHs sent to the terminal device, and then adjust according to the first number or the second number The listening period of the terminal device. The listening period is the period for detecting the set of search spaces. The listening period is greater than or equal to the first threshold and less than or equal to the second threshold. When the first number of times is greater than or equal to the third threshold, the listening period of the terminal device may be reduced, and when the second number of times is greater than or equal to the fourth threshold, the listening period of the terminal device may be increased. The first count and / or the second count can be implemented by a counter, and can be implemented by two counters, that is, one counter counts the first count, one counter counts the second count, or can be implemented by two counters. The listening time of the third search space set and the listening time of the fourth search space set may be continuous or discontinuous. Similarly, the listening time of multiple search space sets and multiple search space sets may be Continuous or non-continuous. The value incremented by the counter every time is the same, which can be 1 or other values. Here, the third search space set and the fourth search space set may be the same search space set or different search space sets.

In this embodiment, it can be determined whether the value counted by the counter satisfies the condition for adjusting the listening period every time the value of the counter is increased, and when it is determined to be satisfied, the listening period is adjusted and the value of the counter is adjusted Set to zero, and continue to count when it is judged to be unsatisfactory. In the case where the set of listening time and / or search space is continuous, it can be implemented by a counter. In the case where the listening time and / or the search space set are continuous, it may be that the PDCCH sent to the terminal device is not detected for the first time after the PDCCH sent to the terminal device is detected. Whether it is greater than or equal to the third threshold, when it is determined that it is greater than or equal to the third threshold, the listening period is reduced, and the counter that counts the first number of times is set to zero; when it is determined that it is less than the third threshold, The counter counting the first count is cleared, and the counter counting the second count is increased by one value. In the same way, it is also possible to determine whether the second number of times is greater than or equal to the fourth threshold when the PDCCH sent to the terminal device is detected for the first time after the PDCCH sent to the terminal device is not detected. In the case of four thresholds, increase the listening period, and at the same time reset the counter that counts the second time to zero; when it is judged that it is less than the fourth threshold, clear the counter that counts the second time and count the first time Increments the counter by one. When decreasing or increasing the listening period, the value of each decrease or increase may be the same or different. When the value of each decrease or increase is different, the amount of decrease can be determined by the first number of times. For example, the reduced listening period can be equal to the original listening period divided by the first number of times. The increase can be determined by the second number of times. For example, the increased listening period can be equal to the original listening period multiplied by the second number of times. The first threshold may be a long discontinuous reception (DRX) period or other values, and the second threshold may be a detection duration time slot of the search space set or other values.

In this embodiment, the first listening time is determined according to the rules, or it may be that the listening time of the third search space set is first counted to detect the first number of PDCCHs sent to the terminal device, and then adjusted according to the first number of times A specific implementation method of the listening period of the terminal device is that the terminal device counts the number of times the PDCCH of the third search space set continuously detects the PDCCH sent to the terminal device, and then adjusts the A listening period of the search space set. For example, if the listening period of the current search space set is M time slots, and the terminal device counts consecutive L listening times of the third search space set, the PDCCH sent to the terminal device is detected, or the terminal device counts The listening time of the third search space set (the listening time may not be continuous) detects that the number of PDCCHs sent to the terminal device reaches L, then reduces the listening period D of the search space set, for example, adjusting D to max {1, ceill (D / 2)} D / 2, where ceill means rounding up, and max means taking the largest of the two numbers. At this time, the corresponding listening offset may remain unchanged or it may Correspondingly zoom. For another example, if the terminal device does not detect the consecutive J listening times of the fourth search space set, the PDCCH sent to the terminal device is not detected, or the terminal device counts the listening time of the fourth search space set (the listening Time may be discontinuous) if the number of PDCCHs sent to the terminal device is not detected to reach J, increase the listening period D of the search space set, for example, adjust D to 2 * D. It can be scaled correspondingly, preferably correspondingly. For example, if the listening offset value is S, the adjusted listening offset value is floor (2 * S), and floor means rounding down.

In this embodiment, the first listening time is determined according to the rule, or it may be that the listening times of multiple search space sets are first counted to detect the first number of PDCCHs sent to the terminal device, and then adjusted according to the first number of times A specific implementation method of the listening period of the terminal device is that the terminal device counts the number of times of detection of multiple search space sets to continuously detect the number of PDCCHs sent to the terminal device, and then adjusts the A listening period of the search space set. For example, if the listening period of the current search space set is M time slots, and the terminal device counts consecutive L listening times in multiple search space sets, the PDCCH sent to the terminal device is detected, or the terminal device counts When the number of PDCCHs sent to the terminal device is detected to reach L during the listening time of multiple search space sets (the listening time may be discontinuous), the listening period D of the search space set is reduced, for example, adjusting D It is max {1, ceill (D / 2)}. At this time, the corresponding listening offset can be kept unchanged or can be scaled accordingly. For another example, if the terminal device does not detect the consecutive J listening times of multiple search space sets, the PDCCH sent to the terminal device is not detected, or the terminal device counts the listening times in multiple search space sets (the detection The listening time may be discontinuous) If the number of PDCCHs sent to the terminal device is not detected to reach J, increase the listening period D of the search space set, for example, adjust D to 2 * D. At this time, the corresponding listening can be If it remains unchanged, it can also be scaled correspondingly, preferably correspondingly. For example, if the listening offset value is S, the adjusted listening offset value is floor (S * 2).

In the embodiment of the present invention, the increased listening period may be multiplied, for example, 2 times, 3 times increased, or progressively increased, such as adding 1, adding 2, and so on. The reduction of the listening period mentioned in the embodiment of the present invention may be a multiple reduction, for example, 2 times 3 times reduction, or a progressive reduction, for example, 1 reduction, 2 reduction, and so on.

In this embodiment, the first listening time is determined according to the rules, or it may be that the listening time of the third search space set or the listening time of multiple search space sets is first counted to detect the first PDCCH sent to the terminal device. Times, a specific implementation method is that if the terminal has multiple search space sets, such as search space set 1 and search space set 2, the terminal device counts the listening time of the multiple search space sets and detects and sends it to the terminal device The first number of times of the PDCCH of the first time, for example, the statistics of the listening time of the search space set 1 and the listening time of the search space set 2 detect the first number of PDCCHs sent to the terminal device.

302. Detect the PDCCH transmitted in the first search space set at the first listening time.

In this embodiment, after the first listening time is determined according to the rules, whether the search space set exists can be detected at the first listening time, and when the search space set is detected, the PDCCH transmitted in the search space set can be detected. If no search space set is detected, this detection will end. The first search space set and the second search space set may be the same search space set or different search space sets.

Based on the network architecture shown in FIG. 1, please refer to FIG. 4, which is a schematic flowchart of another communication method according to an embodiment of the present invention. Among them, the communication method is described from the perspective of a network device. As shown in FIG. 4, the communication method may include the following steps.

401. Determine the first listening time according to the rules.

In this embodiment, the first interception time may be determined according to the rules, which may be that the terminal device detects time information of the search space set first, and then determines the first interception time according to the time information, and at the second interception time, The second search space set transmits the PDCCH of the terminal device to the terminal device, and the PDCCH carries DCI including time information, and the time information may instruct the terminal device to determine the first listening time according to the time information. The definition of time information is the same as that in step 301. For a detailed description, please refer to step 301, which will not be described in detail here. Among them, the time information can be carried by using the redundant bits in the DCI, and different values can be taken according to the size of the redundant bits, or can be carried by the newly added bits in the DCI, or can be carried by the original bits in the DCI. The network device may send the bearer mode of the time information to the terminal device through high-layer signaling, so that the terminal device obtains the time information from the DCI according to the bearer mode.

In this embodiment, it is also possible to first count the listening time of the third search space set or the listening times of multiple search space sets to send the first number of PDCCHs to the terminal device, or count the listening times of the fourth search space set Time or the listening time of multiple search space sets does not send the second number of PDCCHs to the terminal device, and then the listening period of the terminal device is adjusted according to the first number or the second number of times. The specific adjustment method of the listening period is the same as that in step 301. For a detailed description, please refer to step 301, which will not be described in detail here.

402. At the first listening time, transmit the PDCCH in the first search space set.

In this embodiment, after the first listening time is determined according to the rules, it may be first determined whether the first listening time in the search space set needs to be sent to the terminal device, and when it is determined that it needs to be in the first search space set When a PDCCH is sent to the terminal device at a listening time, the PDCCH is transmitted in the first search space set at the first listening time. When it is determined that the terminal device does not transmit the PDCCH at the first listening time of the first search space, the PDCCH of the terminal device is not transmitted at the first listening time.

Based on the network architecture shown in FIG. 1, please refer to FIG. 5, which is a schematic flowchart of another communication method according to an embodiment of the present invention. Among them, the communication method is described from the perspective of network equipment and terminal equipment. As shown in FIG. 5, the communication method may include the following steps.

501. The network device sends the default search space set configuration to the terminal device.

In the wireless communication system, when the terminal device is connected, in order to save the power consumption of the terminal device, it usually enters a discontinuous reception (Discontinuous Reception, DRX) mode. The DRX mode includes multiple DRX cycles, and each DRX cycle includes sleep Phase (Sleep) and continuous phase (OnDuration). At the beginning of each DRX cycle, the terminal device is in a continuous phase, and the terminal device must monitor the PDCCH channel in each subframe to obtain scheduling information. If the terminal device does not receive any scheduling information about itself within a certain period of time, the terminal device enters the sleep stage and stops monitoring the PDCCH channel. If in the continuous phase, the terminal device needs to start or restart the inactive timer (inactive timer) when the terminal device receives scheduling information related to itself on the PDCCH channel, the terminal device monitors the PDCCH during the period when the inactive timer has not expired The channel remains active. After that, if the inactive timer expires, it enters the sleep phase.

In this embodiment, the network device configures one or more search space sets for the terminal device. From the one or more search space sets, a default search space set is configured for each terminal device to configure the terminal device The default search space set can send the default search space set configuration to the terminal device. Correspondingly, the terminal device can receive the default search space set configuration sent by the network device. In addition, the network device may determine the time configuration and send the time configuration to the terminal device may include a continuous phase, and may also include a first time configuration. The network device may determine the first time according to the first time configuration, and use the same method as step 401 to determine a period of time in the first time as the third listening time of the default search space set, and at the third listening time, The PDCCH is transmitted in the default search space set. The first time may be the beginning part of the continuous phase or the time corresponding to all the continuous phases. The first time may be a fixed value or a variable value. Correspondingly, the terminal device receives the time configuration sent by the network device.

502. The terminal device detects the fifth search space set corresponding to the default search space set configuration at the first time.

In this embodiment, after receiving the default search space set configuration and the time configuration, the terminal device determines the first time according to the first time configuration included in the time configuration. After receiving the default search space set configuration, the terminal device detects the fifth search space set corresponding to the default search space set configuration at the first time. In addition, the terminal device may use the same method as step 301 to determine a period of time within the first time as the third listening time, and may detect the fifth search space set corresponding to the default search space set configuration at the third listening time.

503. The network device sends dynamic signaling or MAC signaling carrying a trigger instruction to the terminal device.

In this embodiment, the network device may also send the search space set configuration other than the default search space set configuration to the terminal device. When the network device needs to activate the terminal device to detect a search space set other than the default search space set, the network device sends dynamic signaling or MAC signaling carrying a trigger instruction to the terminal device to activate the terminal device to detect all The indicated search space collection. The search space set configuration other than the default search space set configuration here generally refers to the terminal device specific search space set configuration.

In this embodiment, when the terminal device needs other services, the network device may send dynamic signaling or MAC signaling carrying the trigger instruction to the terminal device, that is, the network device may be activated through dynamic signaling or MAC signaling The terminal device searches for search space sets other than the default search space set. After receiving the dynamic signaling or MAC signaling carrying the trigger instruction from the network device, the terminal device detects a search space set other than the fifth search space set according to the trigger instruction. Among them, the dynamic signaling may be transmitted through dedicated signaling of the terminal device, or may be transmitted through public signaling.

In the case where the first time length is variable, when the network device activates a terminal device-specific search space set configuration other than the default search space set, it is determined that the first time ends. The time after the end of the first time is called the second time.

504. The network device determines the first listening time according to the rule, and transmits the PDCCH in the first search space set at the first listening time.

In this embodiment, after the network device sends dynamic signaling or MAC signaling carrying a trigger instruction to the terminal device, the first listening time may be determined according to rules, and at the first listening time, the PDCCH is transmitted in the first search space set . Step 501 is the same as step 401 and step 402. For detailed description, please refer to step 401 and step 402, which will not be described in detail here. The first listening time may be a period of time in the second time.

The first search space set may be a fifth search space set, or a terminal device-specific search space set other than the fifth search space set.

505. The terminal device determines the first listening time according to the rule, and detects the PDCCH transmitted in the first search space set at the first listening time.

Step 502 is the same as step 301 and step 302. For detailed description, please refer to step 301 and step 302, which will not be described in detail here.

The second search space set and the fifth search space set may be the same search space set, or may be different search space sets. When the second search space set and the fifth search space set are the same search space set, the second listening time and the third listening time may be the same or different.

Based on the network architecture shown in FIG. 1, please refer to FIG. 6, which is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 6, the communication device may include a processing unit 601 and a transceiver unit 602, and the processing unit 601 is used to:

Determine the first listening time according to the rules;

The control transceiver unit 602 detects the PDCCH transmitted in the first search space set at the first listening time.

As a possible implementation, the processing unit 601 is also used to:

Controlling the transceiving unit 602 to detect the DCI carried on the PDCCH of the terminal device transmitted in the second search space set at the second listening time, and the DCI includes time information for the terminal device to detect the search space set;

The first listening time is determined according to time information.

As a possible implementation manner, the time information is the time when the terminal device detects the first search space set, or the time interval between the time when the terminal device detects the first search space set and the second listening time, or the terminal The device detects the number of listening times between the time of the first search space set and the second listening time, or the terminal device detects the number of listening periods between the time of the first search space set and the second listening time.

As a possible implementation, the processing unit 601 is also used to:

Counting the listening time of the third search space set or the listening times of multiple search space sets the first number of times the PDCCH sent to the terminal device is detected, or counting the listening time or multiple search spaces of the fourth search space set The set listening time does not detect the second number of PDCCH sent to the terminal device;

The listening period of the terminal device is adjusted according to the first number or the second number. The listening period is a period for detecting a set of search spaces, and the listening period is greater than or equal to the first threshold and less than or equal to the second threshold.

As a possible implementation, the processing unit 601 is also used to:

In the case where the first number of times is greater than or equal to the third threshold, reduce the listening period of the terminal device;

In the case where the second number of times is greater than or equal to the fourth threshold, the listening period of the terminal device is increased.

As a possible implementation, the processing unit 601 is also used to:

Control the transceiver unit 602 to receive the default search space set configuration from the network device;

The control transceiver unit 602 detects the fifth search space set corresponding to the default search space set configuration received by the transceiver unit 602 at the first time.

As a possible implementation, the processing unit 601 is also used to:

After controlling the transceiving unit 602 to receive the default search space set configuration from the network device, controlling the transceiving unit 602 to receive dynamic signaling or MAC signaling from the network device carrying the trigger instruction;

According to the trigger instruction, the transceiver unit 602 is controlled to detect a search space set other than the fifth search space set.

More detailed descriptions of the processing unit 601 and the transceiver unit 602 can be directly obtained by directly referring to the relevant description of the terminal device in the method embodiments shown in FIG. 3 to FIG. 5, which will not be repeated here.

Based on the network architecture shown in FIG. 1, please refer to FIG. 7, which is a schematic structural diagram of another communication device according to an embodiment of the present invention. As shown in FIG. 7, the communication device may include a processing unit 701 and a transceiver unit 702. The processing unit 701 is used to:

Determine the first listening time according to the rules;

The control transceiver unit 702 transmits the PDCCH in the first search space set at the first listening time.

As a possible implementation, the processing unit 701 is also used to:

Determine the time information that the terminal device detects the search space set;

Determine the first listening time according to the time information;

Controlling the transceiver unit 702 to transmit the PDCCH of the terminal device to the terminal device in the second search space set at the second listening time, the PDCCH carries DCI including time information, and the time information is used to instruct the terminal device to determine according to the time information The first listening time.

As a possible implementation, the processing unit 701 is also used to:

Count the listening time of the third search space set or the listening times of multiple search space sets to send the first number of PDCCHs to the terminal device, or count the listening time of the fourth search space set or the detection of multiple search space sets The second time that the PDCCH is not sent to the terminal device after listening time;

As a possible implementation, the processing unit 701 is also used to:

The control transceiver unit 702 sends a default search space set configuration to the terminal device, where the default search space set configuration is used to instruct the terminal device to detect the fifth search space set corresponding to the default search space set configuration at the first time.

As a possible implementation, the processing unit 701 is also used to:

After controlling the transceiving unit 702 to send the default search space set configuration to the terminal device, controlling the transceiving unit 702 to send dynamic signaling or MAC signaling carrying a trigger instruction to the terminal device, the trigger instruction is used to instruct the terminal device to detect 5. A collection of search spaces other than the collection of search spaces.

More detailed descriptions of the processing unit 701 and the transceiver unit 702 can be obtained directly by referring to the related descriptions of the network devices in the method embodiments shown in FIGS. 3 to 5 above, and details are not described here.

Based on the network architecture shown in FIG. 1, please refer to FIG. 8. FIG. 8 is a schematic structural diagram of another communication device according to an embodiment of the present invention. As shown in FIG. 8, the communication device may include a processor 801, a memory 802, a transceiver 803, and a connection line 804. The memory 802 may exist independently, and the connection line 804 is connected to the processor 801. The memory 802 may also be integrated with the processor 801. The transceiver 803 is used to communicate with other devices, network elements or communication networks, such as Ethernet, radio access network (RAN), and no WLAN. The connection line 804 may include a path for transferring information between the above components. The memory 802 stores program instructions, and the processor 801 is used to execute the program instructions stored in the memory 802. among them:

In one embodiment, the communication device is a terminal device or a chip in the terminal device, and when the program instructions stored in the memory 802 are executed, the processor 801 is used to call the program instructions stored in the memory 802 to execute the processing unit in the above embodiment For the operation performed by 601, the transceiver 803 is used to perform the operation performed by the transceiver unit 602 in the foregoing embodiment.

In another embodiment, the communication device is a network device or a chip in the network device. When the program instructions stored in the memory 802 are executed, the processor 801 is used to call the program instructions stored in the memory 802 to perform the processing in the above embodiment For the operation performed by the unit 701, the transceiver 803 is used to perform the operation performed by the transceiver unit 702 in the foregoing embodiment.

An embodiment of the present invention also provides a communication device, which may be a terminal device or a chip in the terminal device, or a network device or a chip in the network device. The communication device may be used to perform the operations performed by the terminal device or the network device in the foregoing method embodiments.

When the communication device is a terminal device, please refer to FIG. 9, which is a schematic structural diagram of a terminal device according to an embodiment of the present invention. It is easy to understand and convenient to illustrate. In FIG. 9, the terminal device uses a mobile phone as an example. As shown in FIG. 9, the terminal device may include a processor, a memory, a radio frequency circuit, an antenna, and input and output devices. The processor is mainly used for processing communication protocols and communication data, as well as controlling terminal devices, executing software programs, and processing software program data. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive user input data and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit processes the baseband signal after radio frequency processing, and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, only one memory and processor are shown in FIG. 9. In actual terminal equipment products, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium, storage device, or the like. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present invention.

In the embodiments of the present invention, an antenna and a radio frequency circuit with a transceiver function can be regarded as a transceiver unit of a terminal device, and a processor with a processing function can be regarded as a processing unit of the terminal device. As shown in FIG. 9, the terminal device includes a transceiving unit 910 and a processing unit 920. The transceiver unit may also be called a transceiver, a transceiver, a transceiver device, or the like. The processing unit may also be called a processor, a processing board, a processing module, a processing device, and the like. Optionally, the device used to implement the receiving function in the transceiver unit 910 can be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 910 can be regarded as a sending unit, that is, the transceiver unit 910 includes a receiving unit and a sending unit. The transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit. The sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.

It should be understood that the transceiving unit 910 is used to perform the sending operation and the receiving operation on the terminal device side in the above method embodiment, and the processing unit 920 is used to perform other operations on the terminal device other than the transceiving operation in the above method embodiment.

For example, in one implementation, the transceiving unit 910 is used to perform the receiving operation on the terminal device side in step 501 and step 503 in FIG. 5, and / or the transceiving unit 910 is also used on the terminal device side in the embodiment of the present invention Other sending and receiving steps. The processing unit 920 is configured to execute step 502, step 504, and step 506 in FIG. 5, and / or the processing unit 920 is further configured to execute other processing steps on the terminal device side in the embodiment of the present invention.

When the communication device is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit may be an input-output circuit and a communication interface; the processing unit is a processor or microprocessor or integrated circuit integrated on the chip.

When the communication device in this embodiment is a terminal device, please refer to FIG. 10, which is a schematic structural diagram of another terminal device according to an embodiment of the present invention. As an example, the device can perform functions similar to the processor in FIG. 8. In FIG. 10, the terminal device includes a processor 1010, a transmission data processor 1020, and a reception data processor 1030. The processing unit 601 in the above embodiment may be the processor 1010 in FIG. 10 and complete the corresponding functions. The transceiver unit 602 in the above embodiment may be the transmission data processor 1020 and / or the reception data processor 1030 in FIG. 10. Although a channel encoder and a channel decoder are shown in FIG. 10, it can be understood that these modules do not constitute a restrictive description of this embodiment, but are only schematic.

Please refer to FIG. 11, which is a schematic structural diagram of yet another terminal device according to an embodiment of the present invention. The processing device 1100 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment can serve as a modulation subsystem therein. Specifically, the modulation subsystem may include a processor 1103 and an interface 1104. The processor 1103 performs the function of the processing unit 601 described above, and the interface 1104 performs the function of the transceiver unit 602 described above. As another variation, the modulation subsystem includes a memory 1106, a processor 1103, and a program stored on the memory 1106 and executable on the processor. When the processor 1103 executes the program, the terminal device side in the above method embodiment is implemented Methods. It should be noted that the memory 1106 may be non-volatile or volatile, and its location may be inside the modulation subsystem or the processing device 1100, as long as the memory 1106 can be connected to the The processor 1103 is sufficient.

As another form of this embodiment, a computer-readable storage medium is provided, on which instructions are stored, and when the instructions are executed, the method on the terminal device side in the above method embodiment is executed.

As another form of this embodiment, a computer program product containing instructions is provided, and when the instructions are executed, the method on the terminal device side in the foregoing method embodiment is executed.

An embodiment of the present invention also provides a storage medium that stores a program, and when the program runs, the communication method shown in FIGS. 3 to 5 is implemented.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection, any modifications, equivalent replacements, improvements, etc., made on the basis of the technical solution of the present invention, shall be included in the scope of protection of the present invention.

Claims

A communication method, characterized in that it includes:

Determine the first listening time according to the rules;

The physical downlink control channel PDCCH transmitted in the first search space set is detected at the first listening time.
The method according to claim 1, wherein the determining the first listening time according to the rule comprises:

Detecting, at the second listening time, downlink control signaling DCI carried on the PDCCH of the terminal device transmitted in the second search space set, where the DCI includes time information for the terminal device to detect the search space set;

The first listening time is determined according to the time information.
The method according to claim 2, wherein the time information is the time when the terminal device detects the first search space set, or the time and the time when the terminal device detects the first search space set The time interval between the second listening time, or the number of listening times between the time when the terminal device detects the first search space set and the second listening time, or the terminal device detects The number of listening cycles between the time of the first search space set and the second listening time.
The method according to claim 1, wherein the determining the first listening time according to the rule comprises:

Counting the listening time of the third search space set or the listening times of multiple search space sets the first number of times the PDCCH sent to the terminal device is detected, or counting the listening time or multiple search spaces of the fourth search space set The set listening time does not detect the second number of PDCCHs sent to the terminal device;

Adjusting the listening period of the terminal device according to the first number or the second number, where the listening period is a period for detecting a set of search spaces, and the listening period is greater than or equal to a first threshold and less than or Equal to the second threshold.
The method according to claim 4, wherein the adjusting the listening period of the terminal device according to the first number of times or the second number of times comprises:

In the case that the first number of times is greater than or equal to the third threshold, reduce the listening period of the terminal device;

In the case where the second number of times is greater than or equal to the fourth threshold, the listening period of the terminal device is increased.
The method according to any one of claims 1-5, wherein the method further comprises:

Receive the default search space set configuration from the network device;

At a first time, a fifth search space set corresponding to the default search space set configuration is detected.
The method according to claim 6, wherein after receiving the default search space set configuration from the network device, the method further comprises:

Receiving dynamic signaling or media access control MAC signaling from the network device that carries the trigger instruction;

A search space set other than the fifth search space set is detected according to the trigger instruction.
A communication method, characterized in that it includes:

Determine the first listening time according to the rules;

At the first listening time, the PDCCH is transmitted in the first search space set.
The method according to claim 8, wherein the determining the first listening time according to the rule comprises:

Determine the time information that the terminal device detects the search space set;

Determine the first listening time according to the time information;

The method also includes:

At the second listening time, transmit the PDCCH of the terminal device to the terminal device in the second search space set, the PDCCH carries DCI including the time information, and the time information is used to indicate the terminal The device determines the first listening time according to the time information.
The method according to claim 9, wherein the time information is the time when the terminal device detects the first search space set, or the time and the time when the terminal device detects the first search space set The time interval between the second listening time, or the number of listening times between the time when the terminal device detects the first search space set and the second listening time, or the terminal device detects The number of listening cycles between the time of the first search space set and the second listening time.
The method according to claim 8, wherein the determining the first listening time according to the rule comprises:

Count the listening time of the third search space set or the listening times of multiple search space sets to send the first number of PDCCHs to the terminal device, or count the listening time of the fourth search space set or the detection of multiple search space sets The second time that the PDCCH is not sent to the terminal device at the listening time;

Adjusting the listening period of the terminal device according to the first number or the second number, where the listening period is a period for detecting a set of search spaces, and the listening period is greater than or equal to a first threshold and less than or Equal to the second threshold.
The method according to claim 11, wherein the adjusting the listening period of the terminal device according to the first number of times or the second number of times comprises:

In the case that the first number of times is greater than or equal to the third threshold, reduce the listening period of the terminal device;

In the case where the second number of times is greater than or equal to the fourth threshold, the listening period of the terminal device is increased.
The method according to any one of claims 9-12, wherein the method further comprises:

Sending a default search space set configuration to the terminal device, where the default search space set configuration is used to instruct the terminal device to detect a fifth search space set corresponding to the default search space set configuration at the first time.
The method according to claim 13, wherein after sending the default search space set configuration to the terminal device, the method further comprises:

Sending dynamic signaling or MAC signaling carrying a trigger instruction to the terminal device, where the trigger instruction is used to instruct the terminal device to detect a search space set other than the fifth search space set.
A communication device, characterized in that it includes a processing unit and a transceiver unit, and the processing unit is used for:

Determine the first listening time according to the rules;

Controlling the transceiver unit to detect the PDCCH transmitted in the first search space set at the first listening time.
The apparatus according to claim 15, wherein the processing unit is further configured to:

Controlling the transceiver unit to detect the DCI carried on the PDCCH of the terminal device transmitted in the second search space set at the second listening time, where the DCI includes time information for the terminal device to detect the search space set;

The first listening time is determined according to the time information.
The apparatus according to claim 16, wherein the time information is the time when the terminal device detects the first search space set, or the time and the time when the terminal device detects the first search space set The time interval between the second listening time, or the number of listening times between the time when the terminal device detects the first search space set and the second listening time, or the terminal device detects The number of listening cycles between the time of the first search space set and the second listening time.
The apparatus according to claim 15, wherein the processing unit is further configured to:

Counting the listening time of the third search space set or the listening times of multiple search space sets the first number of times the PDCCH sent to the terminal device is detected, or counting the listening time or multiple search spaces of the fourth search space set The set listening time does not detect the second number of PDCCHs sent to the terminal device;

Adjusting the listening period of the terminal device according to the first number or the second number, where the listening period is a period for detecting a set of search spaces, and the listening period is greater than or equal to a first threshold and less than or Equal to the second threshold.
The apparatus according to claim 18, wherein the processing unit is further configured to:

In the case that the first number of times is greater than or equal to the third threshold, reduce the listening period of the terminal device;

In the case where the second number of times is greater than or equal to the fourth threshold, the listening period of the terminal device is increased.
The device according to any one of claims 15-19, wherein the processing unit is further configured to:

Controlling the transceiver unit to receive the default search space set configuration from the network device;

Controlling the transceiver unit to detect a fifth search space set corresponding to the default search space set configuration at the first time.
The apparatus according to claim 20, wherein the processing unit is further configured to:

After controlling the transceiving unit to receive the default search space set configuration from the network device, controlling the transceiving unit to receive dynamic signaling or MAC signaling from the network device that carries the trigger instruction;

Controlling the transceiver unit to detect a search space set other than the fifth search space set according to the trigger instruction.
A communication device, characterized in that it includes a processing unit and a transceiver unit, and the processing unit is used for:

Determine the first listening time according to the rules;

Controlling the transceiver unit to transmit the PDCCH in the first search space set at the first listening time.
The apparatus according to claim 22, wherein the processing unit is further configured to:

Determine the time information that the terminal device detects the search space set;

Determine the first listening time according to the time information;

Controlling the transceiver unit to transmit the PDCCH of the terminal device to the terminal device in the second search space set at the second listening time, the PDCCH carries DCI including the time information, and the time information is used To instruct the terminal device to determine the first listening time according to the time information.
The apparatus according to claim 23, wherein the time information is the time when the terminal device detects the first search space set, or the time and the time when the terminal device detects the first search space set The time interval between the second listening time, or the number of listening times between the time when the terminal device detects the first search space set and the second listening time, or the terminal device detects The number of listening cycles between the time of the first search space set and the second listening time.
The apparatus according to claim 22, wherein the processing unit is further configured to:

Count the listening time of the third search space set or the listening times of multiple search space sets to send the first number of PDCCHs to the terminal device, or count the listening time of the fourth search space set or the detection of multiple search space sets The second time that the PDCCH is not sent to the terminal device at the listening time;

Adjusting the listening period of the terminal device according to the first number or the second number, where the listening period is a period for detecting a set of search spaces, and the listening period is greater than or equal to a first threshold and less than or Equal to the second threshold.
The apparatus according to claim 25, wherein the processing unit is further configured to:

In the case that the first number of times is greater than or equal to the third threshold, reduce the listening period of the terminal device;

In the case where the second number of times is greater than or equal to the fourth threshold, the listening period of the terminal device is increased.
The device according to any one of claims 23-26, wherein the processing unit is further configured to:

Controlling the transceiver unit to send a default search space set configuration to the terminal device, where the default search space set configuration is used to instruct the terminal device to detect a fifth search space set corresponding to the default search space set configuration at the first time .
The apparatus according to claim 27, wherein the processing unit is further configured to:

After controlling the transceiver unit to send the default search space set configuration to the terminal device, controlling the transceiver unit to send dynamic signaling or MAC signaling carrying a trigger instruction to the terminal device, the trigger instruction is used to indicate The terminal device detects a search space set other than the fifth search space set.