WO2022179420A1 - 一种物理下行控制信道监测的方法及装置 - Google Patents

一种物理下行控制信道监测的方法及装置 Download PDF

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Publication number
WO2022179420A1
WO2022179420A1 PCT/CN2022/076521 CN2022076521W WO2022179420A1 WO 2022179420 A1 WO2022179420 A1 WO 2022179420A1 CN 2022076521 W CN2022076521 W CN 2022076521W WO 2022179420 A1 WO2022179420 A1 WO 2022179420A1
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Prior art keywords
search space
space group
terminal device
duration
pdcch
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PCT/CN2022/076521
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English (en)
French (fr)
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薛祎凡
薛丽霞
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华为技术有限公司
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Publication of WO2022179420A1 publication Critical patent/WO2022179420A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0225Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method and apparatus for monitoring a physical downlink control channel (PDCCH).
  • PDCH physical downlink control channel
  • the network device Before the network device and the terminal device perform data transmission, the network device will send the PDCCH to the terminal device. In order to avoid losing the PDCCH, the terminal device needs to monitor the PDCCH frequently according to the configuration of the network device. However, the frequent monitoring of the PDCCH by the terminal device will lead to high power consumption of the terminal device. At present, research on power consumption saving of terminal equipment is becoming more and more common, and detailed optimization schemes for reducing power consumption of terminal equipment have become the research direction of the industry.
  • the present application provides a method and apparatus for monitoring PDCCH of a physical downlink control channel, so as to solve the problem of high power consumption caused by frequent monitoring of PDCCH by terminal equipment in the prior art.
  • the present application provides a method for PDCCH monitoring.
  • the method may include: a terminal device is configured with a first search space group, where the first search space group includes at least one search space.
  • the terminal device monitors the PDCCH according to the first search space group, if the terminal device does not monitor the PDCCH after the first time period, the terminal device stops monitoring the PDCCH.
  • the terminal device when the terminal device does not monitor the PDCCH for a period of time, it will automatically stop monitoring the PDCCH without the need for the network device to send an indication information indication. Therefore, the signaling overhead can be reduced while reducing the power consumption of the terminal device.
  • the terminal device is also configured with a second search space group, wherein the second search space group does not include any search space.
  • the terminal equipment stops monitoring the PDCCH, which specifically includes: the terminal equipment monitors the PDCCH according to the second search space group. In this way, when the terminal device does not monitor the PDCCH for a period of time, it will automatically switch to monitoring the PDCCH according to the empty search space group, so as to stop monitoring the PDCCH without the need for the network device to send indication information.
  • the terminal equipment when the terminal equipment switches from monitoring the PDCCH according to the first search space group to monitoring the PDCCH according to the second search space group, after the terminal equipment monitors the PDCCH according to the second search space group for a second period of time, the terminal equipment monitors the PDCCH according to the second search space group according to the first search space group.
  • the space group monitors the PDCCH. That is to say, after the terminal device stops monitoring the PDCCH for the second time period, it will cut out the empty search space group to continue monitoring the PDCCH.
  • the first duration is configured by the network device, and the second duration is determined according to the first duration; or the second duration is configured by the network device, and the first duration is determined according to the second duration. That is, the first duration and the second duration have an associated relationship. In this way, after the network device configures one duration for the terminal device, the terminal device can determine another duration according to the configured duration, thereby further reducing signaling overhead.
  • the first duration and the second duration are positively correlated.
  • the terminal device has not received the scheduling for a period of time, it is very likely that it will not receive the scheduling for the next period of time.
  • the longer the terminal device has not received the scheduling the next time the scheduling may not be received.
  • the loss of scheduling information can be avoided while reducing the power consumption of the terminal device.
  • the first duration is proportional to the second duration. In this way, the association relationship between the first duration and the second duration can be conveniently configured.
  • the terminal device is further configured with a third search space group, wherein the third search space group includes at least one search space, and the first search space group is different from the third search space group.
  • the intersection of the first search space group and the third search space group may be an empty set or a non-empty set.
  • the terminal equipment when the terminal equipment switches from monitoring the PDCCH according to the third search space group to monitoring the PDCCH according to the second search space group, after the terminal equipment monitors the PDCCH according to the second search space group for a fourth period of time, the terminal equipment monitors the PDCCH according to the third search space group
  • the search space group monitors the PDCCH. That is to say, after the terminal device stops monitoring the PDCCH for the fourth time period, it will cut out the empty search space group and continue monitoring the PDCCH.
  • the third duration is configured by the network device, and the fourth duration is determined according to the third duration; or the fourth duration is configured by the network device, and the third duration is determined according to the fourth duration.
  • the third duration and the fourth duration are positively correlated.
  • the third duration is proportional to the fourth duration.
  • the terminal device when the terminal device monitors the PDCCH according to the first search space group or the third search space group, if the terminal device receives downlink control information DCI and the first indication information included in the DCI is the first value, The terminal equipment monitors the PDCCH according to the first search space group; if the terminal equipment receives the DCI and the first indication information included in the DCI is the second value, the terminal equipment monitors the PDCCH according to the third search space group. In this way, the terminal device can switch between two non-empty search space groups.
  • the terminal device when the terminal device monitors the PDCCH according to the first search space group, if the terminal device receives DCI and the first indication information included in the DCI is a first value, the terminal device according to the first The search space group monitors the PDCCH; if the terminal device receives the DCI and the first indication information included in the DCI is the second value, the terminal device monitors the PDCCH according to the third search space group.
  • the terminal equipment monitors the PDCCH according to the third search space group
  • the terminal equipment monitors the PDCCH according to the third search space group
  • the terminal equipment monitors the PDCCH according to the third search space group
  • the terminal equipment receives the DCI And the first indication information included in the DCI is the second value
  • the terminal device monitors the PDCCH according to the first search space group. In this way, the terminal device can switch between two non-empty search space groups.
  • the terminal device when the terminal device monitors the PDCCH according to the second search space group, after the terminal device sends the uplink scheduling request SR or the random access channel RACH, the terminal device monitors the PDCCH according to the first search space group. That is to say, when the terminal device stops monitoring the PDCCH, after sending the SR or RACH, it will switch out of the empty search space to continue monitoring the PDCCH. In this way, the terminal device can quickly start monitoring the PDCCH when there is a demand for data transmission, thereby reducing the data transmission delay.
  • the terminal device receives high-level configuration signaling sent by the network device, where the high-level configuration signaling indicates that the first search space group corresponds to the first duration.
  • the high layer configuration signaling indicates that the identifier of the first search space group corresponds to the first duration.
  • the terminal device receives first information configured by the network device, where the first information indicates that the network device has configured n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device. number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, The first search space group belongs to the m search space groups, and the second search space group belongs to the (n-m) search space groups.
  • the terminal device is configured with a first search space, the first search space is associated with a first search space group, and the first search space group corresponds to a first index; if the first index is greater than the second index, Then, the terminal device determines that the second search space group is configured, and the second search space group corresponds to the second index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for monitoring PDCCH, the method may include: a network device configures a first search space group for a terminal device, wherein the first search space group includes at least one search space; the network device is a terminal device The device configures a first preset duration, the first preset duration is the first duration or is used to determine the first duration, wherein the first duration is that before the terminal device stops monitoring the PDCCH, the terminal device does not monitor according to the first search space group. Maximum duration of PDCCH.
  • the network device determines that the terminal device stops monitoring the PDCCH.
  • the signaling overhead can be reduced while reducing the power consumption of the terminal device.
  • the network device determines that the terminal device monitors the PDCCH according to the first search space group, if the network device does not send the PDCCH after the first time period, the network device determines that the terminal device stops monitoring the PDCCH and stops sending the PDCCH.
  • the network device further configures a second search space group for the terminal device, wherein the second search space group does not include any search space.
  • the first duration is the maximum duration that the terminal device does not monitor the PDCCH according to the first search space group before the terminal device stops monitoring the PDCCH, including: the first duration is that before the terminal device monitors the PDCCH according to the second search space group,
  • the search space group does not monitor the maximum duration of the PDCCH.
  • the first preset duration is the first duration, and the second duration is determined according to the first duration; or the first preset duration is used to determine the first duration, and the first preset duration is the second duration .
  • the second duration is the maximum duration for which the terminal device monitors the PDCCH according to the second search space group after the terminal device fails to monitor the PDCCH according to the first search space group for the first duration. That is, after the terminal device stops monitoring the PDCCH for the second time period, the network device will continue to send the PDCCH.
  • the first duration and the second duration have an associated relationship. In this way, after the network device configures one duration for the terminal device, the terminal device can determine another duration according to the configured duration, thereby further reducing signaling overhead.
  • the first duration and the second duration are positively correlated.
  • the first duration is proportional to the second duration.
  • the network device further configures a third search space group for the terminal device, where the third search space group includes at least one search space, and the first search space group is different from the third search space group.
  • the network device configures a second preset duration for the terminal device, and the second preset duration is a third duration or is used to determine the third duration, wherein the third duration is that before the terminal device stops monitoring the PDCCH, the terminal device according to the third search space group The maximum duration of PDCCH is not monitored.
  • the terminal device can be made to stop monitoring the PDCCH, thereby reducing the signaling overhead while reducing the power consumption of the terminal device.
  • the network device determines that the terminal device monitors the PDCCH according to the third search space group, if the network device does not send the PDCCH after a third time period, the network device determines that the terminal device monitors the PDCCH according to the second search space group, and stops sending PDCCH.
  • the third duration is the maximum duration that the terminal device does not monitor the PDCCH according to the third search space group before the terminal device stops monitoring the PDCCH, including: the third duration is that the terminal device monitors the PDCCH according to the second search space group Previously, the terminal device did not monitor the maximum duration of the PDCCH according to the third search space group.
  • the second preset duration is the third duration, and the fourth duration is determined according to the third duration; or the second preset duration is used to determine the third duration, and the second preset duration is the fourth duration .
  • the fourth duration is the maximum duration for which the terminal device monitors the PDCCH according to the second search space group after the terminal device fails to monitor the PDCCH according to the third search space group for the third duration. That is to say, after the terminal device stops monitoring the PDCCH for the fourth time period, the network device will continue to send the PDCCH.
  • the third duration and the fourth duration have an associated relationship. In this way, after the network device configures one duration for the terminal device, the terminal device can determine another duration according to the configured duration, thereby further reducing signaling overhead.
  • the third and fourth durations are positively correlated.
  • the third duration is proportional to the fourth duration.
  • the network device when the network device determines that the terminal device monitors the PDCCH according to the first search space group or the third search space group, the network device sends downlink control information DCI to the terminal device, if the first indication information included in the DCI is the a value, the first indication information instructs the terminal device to monitor the PDCCH according to the first search space group; if the first indication information included in the DCI is the second value, the first indication information instructs the terminal device to monitor the PDCCH according to the third search space group Monitor PDCCH.
  • the network device can instruct the terminal device in which non-empty search space group to continue monitoring the PDCCH by sending DCI.
  • the network device when the network device determines that the terminal device monitors the PDCCH according to the first search space group, the network device sends DCI to the terminal device. If the first indication information included in the DCI is a first value, the first indication The information instructs the terminal equipment to monitor the PDCCH according to the first search space group; if the first indication information included in the DCI is the second value, the first indication information instructs the terminal equipment to monitor the PDCCH according to the third search space group. When the network device determines that the terminal device monitors the PDCCH according to the third search space group, the network device sends DCI to the terminal device. If the first indication information included in the DCI is the first value, the first indication information instructs the terminal device to search according to the third search space.
  • the space group monitors the PDCCH; if the first indication information included in the DCI is the second value, the first indication information instructs the terminal device to monitor the PDCCH according to the first search space group. In this way, when the terminal device monitors the PDCCH according to the non-empty search space group, the network device can instruct the terminal device whether to switch to a new non-empty search space group to monitor the PDCCH through DCI.
  • the network device determines that the terminal device monitors the PDCCH according to the second search space group
  • the network device uses the first search space to monitor the PDCCH.
  • the group transmits the PDCCH. That is to say, when the network device determines that the terminal device stops monitoring the PDCCH, after the network device receives the SR or RACH, the network device will start to send the PDCCH. In this way, when the terminal device has a data transmission requirement, the network device can quickly start sending the PDCCH, thereby reducing the data transmission delay.
  • the network device sends high-level configuration signaling to the terminal device, where the high-level configuration signaling indicates that the first search space group corresponds to the first duration.
  • the high layer configuration signaling indicates that the identifier of the first search space group corresponds to the first duration.
  • the network device configures the terminal device with first information, where the first information indicates that the network device configures n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device. number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, The first search space group belongs to the m search space groups, and the second search space group belongs to the (n-m) search space groups.
  • the network device configures a first search space for the terminal device, the first search space is associated with a first search space group, and the first search space group corresponds to a first index; if the first index is greater than the second index, the network device determines that the terminal device is configured with a second search space group, and the second search space group corresponds to the second index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for PDCCH monitoring, the method may include:
  • the terminal device is configured with a first search space group, a second search space group, and a third search space group, wherein the first search space group and the second search space group each include at least one search space, and the third search space group does not include any search space.
  • Search space if the terminal equipment is switched from monitoring the PDCCH according to the first search space group to monitoring the PDCCH according to the third search space group, the terminal equipment monitors the PDCCH according to the third search space group within the first time period;
  • the space group monitoring PDCCH is switched to monitoring the PDCCH according to the third search space group, and the terminal device monitors the PDCCH according to the third search space group within the second time period.
  • the terminal device can stop monitoring the PDCCH for a period of time, thereby reducing the time when the terminal device needs to monitor the PDCCH, which is beneficial to reduce the power consumption of the terminal device.
  • the first duration and the second duration are the same or different.
  • the terminal equipment monitors the PDCCH according to the third search space group within the first time period; the terminal equipment monitors the PDCCH according to the third search space group within the second period of time Then, the terminal device monitors the PDCCH according to the second search space group. In this way, the terminal equipment can switch back to monitoring the PDCCH according to the original search space group.
  • the terminal equipment monitors the PDCCH according to the third search space group within the first time period; and after the terminal equipment monitors the PDCCH according to the third search space group within the second period of time , the terminal device monitors the PDCCH according to the default space group, where the default search space group is the first search space group or the second search space group.
  • the first duration corresponds to the first search space group
  • the second duration corresponds to the second search space group. In this way, the skip duration can be matched with the search space group currently used by the terminal device.
  • the first duration is shorter than the second duration. In this way, the skip duration can be more matched with the search space group currently used by the terminal device, thereby further reducing the power consumption of the terminal device.
  • the configuration information of the first search space group includes a first parameter, and the first parameter indicates the first duration
  • the configuration information of the second search space group includes a second parameter, and the second parameter indicates the first duration. Two hours.
  • the configuration information of the third search space group includes a first parameter, the first parameter indicates that the first duration is associated with the first search space group, and/or the first parameter indicates that the second duration is associated with the second duration Search space associations.
  • the terminal device receives first information configured by the network device, where the first information indicates that the network device has configured n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device. number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, The first search space group and the second search space group belong to the m search space groups, and the third search space group belongs to the (n-m) search space groups.
  • the terminal device is configured with a first search space, the first search space is associated with a first search space group, and the first search space group corresponds to a first index; if the first index is greater than the second index, Then, the terminal device determines that the third search space group is configured, and the third search space group corresponds to the second index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for PDCCH monitoring, the method may include: a network device configuring a first search space group, a second search space group and a third search space group for a terminal device, wherein the first search space Both the group and the second search space group include at least one search space, and the third search space group does not include any search space; the network device also configures a first duration and a second duration for the terminal device, and the first duration is used to indicate the When the terminal equipment switches from monitoring the PDCCH according to the first search space group to monitoring the PDCCH according to the third search space group, the terminal equipment monitors the duration of the PDCCH according to the third search space group; the second duration is used to indicate the terminal equipment When switching from monitoring the PDCCH according to the second search space group to monitoring the PDCCH according to the third search space group, the terminal device monitors the duration of the PDCCH according to the third search space group.
  • the network device determines that the terminal device is switched from monitoring the PDCCH according to the first search space group to monitoring the PDCCH according to the third search space group, the network device does not send the PDCCH within the first time period; if the network device determines that the terminal device Switching from monitoring the PDCCH according to the second search space group to monitoring the PDCCH according to the third search space group, the network device does not send the PDCCH within the second time period.
  • the terminal device can be stopped from monitoring the PDCCH for a period of time, thereby reducing the power consumption of the terminal device.
  • the first duration and the second duration are the same or different.
  • the network device determines that the terminal device monitors the PDCCH according to the first search space group; after the network device does not send the PDCCH for the second time period, the network device determines that the terminal device monitors the PDCCH.
  • the PDCCH is monitored according to the second search space group. In this way, the network device can determine that the terminal device switches back to monitoring the PDCCH according to the original search space group.
  • the network device determines that the terminal device monitors the PDCCH according to the default search space group; after the network device does not send the PDCCH for the second duration, the network device determines that the terminal device monitors the PDCCH according to the The default space group monitors the PDCCH, where the default search space group is the first search space group or the second search space group.
  • the first duration corresponds to the first search space group
  • the second duration corresponds to the second search space group. In this way, the skip duration can be matched with the search space group currently used by the terminal device.
  • the first duration is shorter than the second duration. In this way, the skip duration can be more matched with the search space group currently used by the terminal device, thereby further reducing the power consumption of the terminal device.
  • the configuration information of the first search space group includes a first parameter, and the first parameter indicates the first duration
  • the configuration information of the second search space group includes a second parameter, and the second parameter indicates the first duration. Two hours.
  • the configuration information of the third search space group includes a first parameter, the first parameter indicates that the first duration is associated with the first search space group, and/or the first parameter indicates that the second duration is associated with the second duration Search space associations.
  • the network device configures the terminal device with first information, where the first information indicates that the network device configures n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device. number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, The first search space group and the second search space group belong to the m search space groups, and the third search space group belongs to the (n-m) search space groups.
  • the network device configures a first search space for the terminal device, the first search space is associated with a first search space group, and the first search space group corresponds to a first index; if the first index is greater than the second index, the network device determines that the terminal device is configured with a third search space group, and the third search space group corresponds to the second index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for PDCCH monitoring, the method may include: a terminal device is configured with a first search space group, wherein the first search space group does not include any search space.
  • the terminal equipment receives the first downlink control information DCI, if the first DCI includes the first indication information, the terminal equipment monitors the PDCCH according to the first search space group within the first time period; if the first DCI includes the second indication information, The terminal device monitors the PDCCH according to the first search space group for the second time period.
  • the terminal device can skip the PDCCH monitoring for a period of time, thereby reducing the power consumption of the terminal device.
  • the first duration and the second duration are the same or different.
  • different durations may be configured for an empty search space group, so that the terminal device can skip PDCCH monitoring of different durations.
  • the skip duration can match the search space group currently used by the terminal device, thereby reducing the power consumption of the terminal device.
  • the terminal device is further configured with a second search space group, wherein the second search space group includes at least one search space.
  • the terminal equipment receives the DCI, and if the DCI includes the third indication information, the terminal equipment monitors the PDCCH according to the second search space group.
  • the first indication information indicates a first state value among the N state values
  • the second indication information indicates a second state value among the N state values
  • the third indication information indicates the N state values The third state value in .
  • the terminal device is further configured with a third search space group, where the third search space group includes at least one search space, and the second search space group is different from the third search space group. If the DCI includes the fourth indication information, the terminal device monitors the PDCCH according to the third search space group.
  • the fourth indication information may indicate a fourth state value among the N state values. In this way, the terminal device can be configured with different search space groups, and can switch between different search space groups through the status value indication.
  • the terminal equipment monitors the PDCCH according to the first search space group within the first time period
  • the terminal equipment monitors the PDCCH according to the second search space group or the third search space group; or, the terminal equipment monitors the PDCCH within the second period of time
  • the terminal device monitors the PDCCH according to the second search space group or the third search space group.
  • the terminal device receives high-level configuration signaling sent by the network device, and the high-level configuration signaling configures one or more of the following: the first indication information instructs the terminal device to use the first search space group for a first time period Monitor the PDCCH, the second indication information instructs the terminal device to monitor the PDCCH according to the first search space group within the second duration, the third indication information instructs the terminal device to monitor the PDCCH according to the second search space group, or the fourth indication information instructs the terminal device to monitor the PDCCH according to the first search space group.
  • Three search space groups monitor the PDCCH.
  • the terminal device receives high-level configuration signaling sent by the network device, and the high-level configuration signaling configures one or more of the following: the first state value indicates that the terminal device is based on the first search space group within the first time period.
  • the second state value instructs the terminal device to monitor the PDCCH according to the first search space group within the second duration
  • the third state value instructs the terminal device to monitor the PDCCH according to the second search space group
  • the fourth state value instructs the terminal device to monitor the PDCCH according to the first search space group.
  • Three search space groups monitor the PDCCH.
  • the terminal device receives first information configured by the network device, where the first information indicates that the network device has configured n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device; number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, The second search space group and the third search space group belong to the m search space groups, and the first search space group belongs to the (n-m) search space groups.
  • the terminal device is configured with a first search space, the first search space is associated with a second search space group, and the second search space group corresponds to a second index; if the second index is greater than the third index, Then, the terminal device determines that the third search space group is configured, and the third search space group corresponds to the third index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for PDCCH monitoring, the method may include: a network device configures a first search space group for a terminal device, wherein the first search space group does not include any search space.
  • the network device sends downlink control information DCI to the terminal device. If the DCI includes the first indication information, the first indication information instructs the terminal device to monitor the PDCCH according to the first search space group within the first duration; if the DCI includes the second indication information , the second indication information instructs the terminal device to monitor the PDCCH according to the first search space group within the second time period.
  • the network device can instruct the terminal device to skip PDCCH monitoring for a period of time by sending DCI, thereby reducing the power consumption of the terminal device.
  • the first duration and the second duration are the same or different.
  • the network device can configure different durations for an empty search space group, so that the terminal device can skip PDCCH monitoring of different durations.
  • the skip duration can match the search space group currently used by the terminal device, thereby reducing the power consumption of the terminal device.
  • the network device further configures a second search space group for the terminal device, wherein the second search space group includes at least one search space.
  • the network device sends the DCI to the terminal device, and if the DCI includes third indication information, the third indication information instructs the terminal device to monitor the PDCCH according to the second search space group.
  • the first indication information indicates a first state value among the N state values
  • the second indication information indicates a second state value among the N state values
  • the third indication information indicates the N state values The third state value in .
  • the network device further configures a third search space group, the third search space group includes at least one search space, and the second search space group is different from the third search space group; if the DCI includes fourth indication information , the fourth indication information instructs the terminal device to monitor the PDCCH according to the third search space group.
  • the fourth indication information may indicate a fourth state value among the N state values. In this way, the network device can configure different search space groups for the terminal device, and determine that the terminal device switches between different search space groups through the status value indication.
  • the network device sends high-level configuration signaling to the terminal device, where the high-level configuration signaling configures one or more of the following: the first indication information instructs the terminal device to use the first search space group for a first time period Monitor the PDCCH, the second indication information instructs the terminal device to monitor the PDCCH according to the first search space group within the second duration, the third indication information instructs the terminal device to monitor the PDCCH according to the second search space group, or the fourth indication information instructs the terminal device to monitor the PDCCH according to the first search space group.
  • Three search space groups monitor the PDCCH.
  • the network device sends a high-level configuration signaling to the terminal device, where the high-level configuration signaling configures one or more of the following: the first state value indicates that the terminal device is based on the first search space group within the first time period.
  • the second state value instructs the terminal device to monitor the PDCCH according to the first search space group within the second duration
  • the third state value instructs the terminal device to monitor the PDCCH according to the second search space group
  • the fourth state value instructs the terminal device to monitor the PDCCH according to the first search space group.
  • Three search space groups monitor the PDCCH.
  • the network device configures the terminal device with first information, where the first information indicates that the network device configures n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device. number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, Wherein, the second search space group and the third search space group belong to the m search space groups, and the first search space group belongs to the (n-m) search space groups.
  • the network device configures a first search space for the terminal device, the first search space is associated with a second search space group, and the second search space group corresponds to a second index; if the second index is greater than the third index, the terminal device determines that the third search space group is configured, and the third search space group corresponds to the third index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for PDCCH monitoring, the method may include: a terminal device is configured with a first search space group and a second search space group, wherein the first search space group and the second search space group are both Does not include any search space; the terminal device receives the first downlink control information DCI, and if the first DCI includes the first indication information, the terminal device monitors the PDCCH according to the first search space group within the first duration; if the first DCI includes In the second indication information, the terminal device monitors the PDCCH according to the second search space group within the second time period.
  • the terminal device can skip the PDCCH monitoring for a period of time, thereby reducing the power consumption of the terminal device.
  • the first duration and the second duration are the same or different.
  • different durations can be configured for different empty search space groups, so that the terminal device can skip PDCCH monitoring of different durations.
  • the skip duration can match the search space group currently used by the terminal device, thereby reducing the power consumption of the terminal device.
  • the terminal device is further configured with a third search space group, and the third search space group includes at least one search space. After the terminal equipment monitors the PDCCH according to the first search space group within the first time period, the terminal equipment monitors the PDCCH according to the third search space group; or, after the terminal equipment monitors the PDCCH according to the second search space group within the second period of time, the terminal equipment The PDCCH is monitored according to the third search space group.
  • the first duration corresponds to the first search space group
  • the second duration corresponds to the second search space group.
  • different empty search space groups can correspond to different skip durations.
  • the configuration information of the first search space group includes a first parameter indicating the first duration
  • the configuration information of the second search space group includes a second parameter indicating the second duration
  • the terminal device receives high-level configuration signaling sent by the network device, where the high-level configuration signaling configures the first duration corresponding to the first search space, and/or the high-level configuration signaling configures the second search space the corresponding second duration.
  • the terminal device receives first information configured by the network device, where the first information indicates that the network device has configured n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device. number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, The third search space group belongs to the m search space groups, and the first search space group and the second search space group belong to the (n-m) search space groups.
  • the terminal device is configured with a first search space, the first search space is associated with a third search space group, and the third search space group corresponds to a third index; if the third index is greater than the second index, Then, the terminal device determines that the second search space group is configured, and the second search space group corresponds to the second index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for PDCCH monitoring, the method may include: configuring a first search space group and a second search space group by a network device, wherein neither the first search space group nor the second search space group Including any search space; the network device sends downlink control information DCI to the terminal device, if the DCI includes the first indication information, the first indication information instructs the terminal device to monitor the PDCCH according to the first search space group within the first duration; if the DCI Including second indication information, the second indication information instructs the terminal device to monitor the PDCCH according to the second search space group within the second time period.
  • the network device can instruct the terminal device to skip PDCCH monitoring for a period of time by sending DCI, thereby reducing the power consumption of the terminal device.
  • the first duration and the second duration are the same or different.
  • the network device can configure different durations for different empty search space groups, so that the terminal device can skip PDCCH monitoring of different durations.
  • the skip duration can match the search space group currently used by the terminal device, thereby reducing the power consumption of the terminal device.
  • the first duration corresponds to the first search space group
  • the second duration corresponds to the second search space group.
  • different empty search space groups can correspond to different skip durations.
  • the configuration information of the first search space group includes a first parameter indicating the first duration
  • the configuration information of the second search space group includes a second parameter indicating the second duration
  • the network device sends high-level configuration signaling to the terminal device, where the high-level configuration signaling configures the first duration corresponding to the first search space, and/or the high-level configuration signaling configures the second search space corresponding to the second duration.
  • the network device configures the terminal device with first information, where the first information indicates that the network device configures n search space groups for the terminal device.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes the number of search space groups configured by the network device for the terminal device. number n; or the first information includes the index value range of the search space group configured by the network device for the terminal device from 0 to n-1; or the first information includes the maximum index value of the search space group configured by the network device for the terminal device value n-1.
  • m search space groups in n search space groups have associated search spaces, and the remaining (n-m) search space groups in the n search space groups do not have associated search spaces; where, The third search space group belongs to the m search space groups, and the first search space group and the second search space group belong to the (n-m) search space groups.
  • the network device configures a first search space for the terminal device, the first search space is associated with a third search space group, and the third search space group corresponds to a third index; if the third index is greater than the second index, the terminal device determines that the second search space group is configured, and the second search space group corresponds to the second index.
  • the terminal device determines that the fourth search space group is not configured, wherein, The fourth search space group corresponds to the fourth index.
  • the present application provides a method for monitoring PDCCH, the method may include: a terminal device is configured with a first search space group, wherein the first search space group includes at least one search space; when the terminal device stops monitoring the PDCCH , after the terminal device sends the uplink scheduling request SR or the random access channel RACH, the terminal device monitors the PDCCH according to the first search space group.
  • the terminal device can quickly start monitoring the PDCCH when there is a demand for data transmission, thereby reducing the data transmission delay.
  • the terminal device is further configured with a second search space group, wherein the second search space group does not include any search space; the terminal device stops monitoring the PDCCH, which specifically includes: the terminal device according to the second search space group Monitor PDCCH.
  • the present application provides a method for monitoring PDCCH, the method may include: when the network device determines that the terminal device stops monitoring the PDCCH, after the network device receives the uplink scheduling request SR or the random access channel RACH sent by the terminal device, The network device sends the PDCCH to the terminal device according to the first search space group, where the first search space group includes at least one search space.
  • the network device when the network device determines that the terminal device stops monitoring the PDCCH, after the network device receives the SR or RACH, the network device will start to send the PDCCH. In this way, when the terminal device has a data transmission requirement, the network device can quickly start sending the PDCCH, thereby reducing the data transmission delay.
  • the network device determining that the terminal device stops monitoring the PDCCH specifically includes: the network device determining that the terminal device monitors the PDCCH according to the second search space group; wherein the second search space group does not include any search space.
  • the present application further provides a method for configuring a search space group, the method may include: a terminal device is configured with a first index corresponding to a first search space group, wherein the first search space group does not include any search space.
  • the present application further provides a method for configuring a search space group, the method may include: a network device configuring a first index corresponding to a first search space group for a terminal device, wherein the first search space group does not Include any search space.
  • the present application further provides a method for configuring a search space group, the method may include: the terminal device receives first information configured by the network device, where the first information indicates that the network device has configured n searches for the terminal device space group.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes searches configured by the network device for the terminal device The number of space groups is n; or the first information includes an index value range of 0 to n-1 for the search space group configured by the network device for the terminal device; or the first information includes the index value of the search space group configured by the network device for the terminal device.
  • the maximum value of the index value is n-1.
  • n search space groups of the n search space groups have associated search spaces, and the remaining (n-m) search space groups of the n search space groups have no associated search spaces.
  • the present application further provides a method for configuring a search space group, the method may include: a network device configuring first information for a terminal device, where the first information indicates that the network device is configured for the terminal device n search space groups.
  • the first information indicates that the network device has configured n search space groups for the terminal device, including one or more of the following: the first information includes searches configured by the network device for the terminal device The number of space groups is n; or the first information includes an index value range of 0 to n-1 for the search space group configured by the network device for the terminal device; or the first information includes the index value of the search space group configured by the network device for the terminal device.
  • the maximum value of the index value is n-1.
  • n search space groups of the n search space groups have associated search spaces, and the remaining (n-m) search space groups of the n search space groups have no associated search spaces.
  • the present application further provides a method for configuring a search space group, the method may include: a terminal device is configured with a first search space, the first search space is associated with the first search space group, the first search space is The space group corresponds to the first index; if the first index is greater than the second index, the terminal device determines that a second search space group is configured, and the second search space group corresponds to the second index.
  • the second search space group does not include any search space.
  • the terminal device determines that the third search space group is not configured, wherein, The third search space group corresponds to the third index.
  • the present application further provides a method for configuring a search space group.
  • the method may include: a network device configuring a first search space for a terminal device, where the first search space is associated with the first search space group, and the first search space is associated with the first search space group.
  • a search space group corresponds to the first index; if the first index is greater than the second index, the network device determines that the terminal device is configured with a second search space group, and the second search space group corresponds to the second index.
  • the second search space group does not include any search space.
  • the terminal device determines that the third search space group is not configured, wherein, The third search space group corresponds to the third index.
  • the present application further provides a communication device, the communication device may be a terminal device, and the communication device has the functions of implementing the above-mentioned first, third, fifth, seventh, ninth, The function of the terminal device of any one of the eleventh aspect, the thirteenth aspect, or the fifteenth aspect.
  • the functions can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication device includes a transceiver unit and a processing unit, and these units can perform the above-mentioned first aspect, third aspect, fifth aspect, seventh aspect, ninth aspect, and eleventh aspect
  • the structure of the communication device includes a transceiver unit and a processing unit, and these units can perform the above-mentioned first aspect, third aspect, fifth aspect, seventh aspect, ninth aspect, and eleventh aspect
  • the structure of the communication device includes a transceiver and a processor, and optionally a memory, where the transceiver is used to send and receive data, and to communicate and interact with other devices in the communication system,
  • the processor is configured to support the communication device to perform any of the above-mentioned first, third, fifth, seventh, ninth, eleventh, thirteenth, or fifteenth aspects Corresponding functionality of the terminal device of any aspect.
  • the memory is coupled to the processor and holds program instructions and data necessary for the communication device.
  • the present application further provides a communication device, the communication device may be a network device, and the communication device has the ability to realize the above-mentioned second aspect, fourth aspect, sixth aspect, eighth aspect, tenth aspect,
  • the functions can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication device includes a transceiver unit and a processing unit, and these units can perform the above-mentioned second aspect, fourth aspect, sixth aspect, eighth aspect, tenth aspect, and twelfth aspect
  • the structure of the communication device includes a transceiver unit and a processing unit, and these units can perform the above-mentioned second aspect, fourth aspect, sixth aspect, eighth aspect, tenth aspect, and twelfth aspect
  • the structure of the communication device includes a transceiver and a processor, and optionally a memory, where the transceiver is used to send and receive data, and to communicate and interact with other devices in the communication system,
  • the processor is configured to support the communication device to perform any of the above-mentioned second, fourth, sixth, eighth, tenth, twelfth, fourteenth, or sixteenth aspects Corresponding functionality of the network device of any aspect.
  • the memory is coupled to the processor and holds program instructions and data necessary for the communication device.
  • an embodiment of the present application provides a communication system, which may include the above-mentioned terminal device and network device.
  • a twentieth aspect provides a computer-readable storage medium provided by an embodiment of the present application.
  • the computer-readable storage medium stores program instructions, and when the program instructions are executed on a computer, the computer can execute the first to sixteenth aspects above.
  • a computer-readable storage medium can be any available medium that can be accessed by a computer.
  • computer readable media may include non-transitory computer readable media, random-access memory (RAM), read-only memory (ROM), electrically erasable Except programmable read only memory (electrically EPROM, EEPROM), CD-ROM or other optical disk storage, magnetic disk storage medium or other magnetic storage device, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of Any other media accessed by a computer.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable Except programmable read only memory
  • CD-ROM or other optical disk storage magnetic disk storage medium or other magnetic storage device, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of Any other media accessed by a computer.
  • embodiments of the present application provide a computer program product including computer program codes or instructions, which, when run on a computer, enable the computer to implement any one of the above-mentioned first to sixteenth aspects and the same. method in any possible design.
  • the present application further provides a chip, including a processor, which is coupled to a memory and configured to read and execute program instructions stored in the memory, so that the chip implements the above-mentioned first
  • a chip including a processor, which is coupled to a memory and configured to read and execute program instructions stored in the memory, so that the chip implements the above-mentioned first
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by the present application.
  • Fig. 2 is a kind of schematic diagram of monitoring PDCCH provided by this application.
  • FIG. 3 is a schematic diagram of another monitoring PDCCH provided by the present application.
  • FIG. 4 is a schematic diagram of another monitoring PDCCH provided by the present application.
  • FIG. 5 is a schematic diagram of another monitoring PDCCH provided by the present application.
  • FIG. 6 is a schematic diagram of another monitoring PDCCH provided by the present application.
  • FIG. 7 is a schematic diagram of another monitoring PDCCH provided by the present application.
  • FIG. 8 is a schematic diagram of another monitoring PDCCH provided by the present application.
  • FIG. 9 is a schematic diagram of a search space switching provided by the present application.
  • FIG. 10 is a schematic diagram of another search space switching provided by this application.
  • FIG. 11 is a structural diagram of a communication device provided by the application.
  • FIG. 12 is a structural diagram of a communication device provided by the present application.
  • Embodiments of the present application provide a method and apparatus for monitoring PDCCH, so as to specify how a terminal device monitors PDCCH.
  • the methods and devices described in this application are based on the same technical concept. Since the methods and devices have similar principles for solving problems, the implementations of the devices and methods can be referred to each other, and repeated descriptions will not be repeated here.
  • At least one (species) refers to one (species) or multiple (species), and multiple (species) refers to two (species) or more than two (species).
  • FIG. 1 shows an architecture of a communication system involved in an embodiment of the present application.
  • the architecture of the communication system includes a network device 110 and a terminal device 120 , where the terminal device 120 can communicate with the network device 110 .
  • the network device 110 may be a device with a wireless transceiver function or a chip of a device with a wireless transceiver function, the network device includes but is not limited to: a base station (generation node B, gNB), a radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission) in wireless fidelity (wireless fidelity, WIFI) systems point, TP), etc., and may also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU), etc.
  • RNC
  • a gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer functions
  • DU implements wireless chain
  • the functions of the road control radio link control, RLC
  • media access control media access control, MAC
  • physical (physical, PHY) layers The functions of the road control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layers.
  • the network device may be a CU node, a DU node, or a device including a CU node and a DU node.
  • the CU may be divided into network equipment in the access network RAN, and the CU may also be divided into network equipment in the core network CN, which is not limited.
  • Terminal equipment 120 may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, User Agent or User Device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( Wireless terminals in transportation safety), wireless terminals in smart cities, smart wearable devices (smart glasses, smart watches, smart headphones, etc.), wireless terminals in smart homes, and so on.
  • the embodiments of the present application do not limit application scenarios.
  • a terminal device with a wireless transceiver function and a chip that can be installed in the aforementioned terminal device are collectively referred to as
  • the communication system described in FIG. 1 may include, but is not limited to, a long term evolution (LTE) system, a fifth generation mobile communication (the 5th Generation, 5G) system, machine to machine communication (machine to machine) , M2M) system, sidelink communication system (Sidelink) or other communication systems evolved in the future, such as 6G system.
  • LTE long term evolution
  • 5G fifth generation mobile communication
  • M2M machine to machine communication
  • Sidelink sidelink communication system
  • 6G system sidelink communication system
  • the wireless air interface technology of 5G is called new radio (NR), and the 5G system may also be called an NR system.
  • the network device can schedule the terminal device through the physical downlink control channel PDCCH.
  • the PDCCH can carry downlink scheduling information so that the terminal device can receive a physical downlink shared channel (PDSCH), or the PDCCH can carry uplink scheduling information so that the terminal device can send a physical uplink shared channel (PUSCH) ).
  • the scheduling information may indicate PDSCH or PUSCH transmission parameters, and these transmission parameters include time domain resource positions of PDSCH or PUSCH.
  • the PDCCH carries downlink control information (downlink control information, DCI), and the network device indicates the above-mentioned time domain resource location through the DCI.
  • DCI downlink control information
  • the network device will indicate the K0 value through the time domain resource allocation (TDRA) field in the DCI, which is used to determine the time slot interval between the PDCCH and PDSCH; for the uplink data, the network device will The K2 value is indicated by the TDRA field in the DCI to determine the slot interval between the PDCCH and the PUSCH.
  • TDRA time domain resource allocation
  • the network device sends the corresponding downlink data with the configuration parameters indicated in the DCI, and the terminal device receives the corresponding parameters at the corresponding position; at the time domain resource position of the PUSCH, the terminal device uses the DCI to receive it.
  • the configuration parameters indicated in send the corresponding uplink data, and the base station receives the corresponding parameters at the corresponding position.
  • the terminal device In order to receive DCI, the terminal device needs to blindly detect (blind detect, BD) the PDCCH sent to itself by the network device in the downlink control area, that is, the terminal device monitors many PDCCH candidate positions (PDCCH candidate), from which to find out whether there is any my own.
  • search space set search space
  • search space set group search space set group
  • SSSG search space set group
  • the terminal device may periodically monitor one (group) or multiple (group) search spaces to find out whether there is a PDCCH sent to itself.
  • the terminal device needs to monitor the time domain position of the PDCCH, which may also be referred to as a PDCCH monitoring occasion (PDCCH monitoring occasion).
  • the terminal equipment will frequently monitor the PDCCH. However, if there is no service for the terminal device for a period of time, that is, when there is no downlink data or uplink data to be transmitted, the terminal device cannot receive the PDCCH sent by the network device even if it monitors the PDCCH. The PDCCH will be monitored, so the power consumption of the terminal equipment will be wasted.
  • the network device can send an indication message to the terminal device to instruct the terminal device to skip the PDCCH monitoring (PDCCH skipping) for a period of time, and this skipping time can be called is skipping duration.
  • PDCCH skipping PDCCH monitoring
  • FIG. 2 when monitoring the PDCCH, the terminal device receives an indication message, and thus skips 4 time slots (slots), that is, the PDCCH is not monitored in these 4 time slots.
  • Another possible solution to reduce the power consumption of end devices is search space set group switching (SSSG switching).
  • the network device may send an indication message to the terminal device, instructing the terminal device to switch between two groups of preconfigured search spaces.
  • the terminal device is configured with two groups of search spaces, the first search space group includes search space 1, the monitoring period corresponding to search space 1 is one time slot, and the second search space group includes search space 2, The monitoring period corresponding to search space 2 is 4 time slots.
  • the network device can send an indication message to the terminal device, instructing the terminal device to switch from monitoring the first search space group to monitoring the second search space group, thereby reducing the number of PDCCH monitoring and saving the power consumption of the terminal device, that is, to achieve energy saving the goal of.
  • the first scheme is flexible and changeable, and is suitable for scheduling changes on a small time scale, that is, with or without scheduling changes more frequently, while the second scheme is suitable for scheduling changes on a larger time scale.
  • a possible way to support the above two functions at the same time is to configure an empty search space group for the terminal device to achieve the effect of skipping PDCCH monitoring for a period of time.
  • the network device may send an indication message to the terminal device, instructing the terminal device to switch to monitoring the PDCCH according to the empty search space group.
  • the empty search space group does not include any search space, that is, the terminal equipment will not monitor the PDCCH when using the empty search space group.
  • the network device can also configure or indicate a duration for the terminal device. After the terminal device uses the empty search space group for this duration, it will automatically switch out of the empty search space group, and then monitor the non-empty search space group normally, so as to achieve a jump.
  • the technical effect of PDCCH monitoring over a period of time ie not monitoring PDCCH for a period of time). Since the technical effect of using the duration of the empty search space group is equal to the skip duration in the PDCCH skipping scheme, for convenience of expression, the duration of using the empty search space group is also referred to as the skip duration in the following text.
  • the terminal equipment mentioned in this application monitors the PDCCH according to the empty search space group, which is equivalent to that the terminal equipment does not monitor the PDCCH, stops monitoring the PDCCH, does not perform PDCCH blind detection or No PDCCH decoding is performed.
  • the terminal equipment monitors the PDCCH according to the empty search space group for a period of time, which is equivalent to the terminal equipment not monitoring the PDCCH, stopping the monitoring of the PDCCH or not performing blind detection of the PDCCH within the period of time.
  • This application describes the monitoring of the PDCCH according to the empty search space group as an example.
  • the terminal equipment monitoring the PDCCH according to the empty search space group may also be replaced by the terminal equipment stopping monitoring the PDCCH.
  • the first search space group includes search space 1
  • the monitoring period corresponding to search space 1 is 1 time slot
  • the second search space group includes search space 2
  • the monitoring period corresponding to search space 2 is 5 hours
  • the third search space group does not include any search space, that is, the third search space group is an empty search space group.
  • the terminal device monitors the PDCCH according to the first search space group (ie, search space 1), it receives the network device the indication information, the terminal equipment switches to monitor the PDCCH according to the third search space group, that is, skips 3 time slots.
  • the PDCCH monitoring of three time slots can be reduced. In this case, it is more appropriate to use the first search space group in conjunction with the empty third search space group.
  • the skip duration using the third search space group is 3 time slots, as shown in (b) in Figure 4, when the terminal device monitors the PDCCH according to the second search space group (ie, search space 2), when it receives According to the indication information of the network equipment, the terminal equipment switches to monitor the PDCCH according to the third search space group, that is, skips 3 time slots.
  • the search space group does not actually reduce PDCCH monitoring. Therefore, at this time, using an empty search space group, that is, skipping the PDCCH monitoring for a period of time, does not achieve the purpose of energy saving.
  • the present application proposes a method for PDCCH monitoring, which can utilize an empty search space group to implement PDCCH monitoring that skips a period of time, thereby saving power consumption of terminal equipment.
  • what can monitor or not monitor the PDCCH may be a terminal device, or a processor in the terminal device, or a chip or a chip system, or a functional module, etc.; How the device monitors the PDCCH may be a network device, or a processor in the network device, or a chip or a chip system, or a functional module, or the like.
  • the PDCCH monitoring method provided by the present application is described in detail by taking the terminal device and the network device as examples, but the present application is not limited.
  • an embodiment of the present application provides a PDCCH monitoring method, which is applicable to the communication system shown in FIG. 1 .
  • the method may include: the terminal device is configured with a first search space group A1, a second search space group A2 and a third search space group A3.
  • the first search space group A1 and the second search space group A2 are non-empty search space groups, that is, the first search space group A1 and the second search space group A2 each include at least one search space, and the third search space group A3 is The empty search space group, that is, the third search space group A3 does not include any search space.
  • the terminal device is also configured with two skip durations, corresponding to two non-empty search space groups respectively.
  • the empty search space group is switched out after the skip duration corresponding to the non-empty search space group.
  • the terminal equipment switches from monitoring the PDCCH according to the first search space group A1 to monitoring the PDCCH according to the third search space group A3, the terminal equipment monitors the PDCCH according to the third search space group A3 within the first time period;
  • the monitoring of the PDCCH in the second search space group A2 is switched to monitoring the PDCCH according to the third search space group A3, and the terminal device monitors the PDCCH according to the third search space group within the second time period.
  • the first duration and the second duration may be the same or different.
  • the network device configures the at least first search space group A1, the second search space group A2 and the third search space group A3 for the terminal device.
  • the network device also configures the first duration and the second duration for the terminal device.
  • the first duration is used to instruct the terminal equipment to switch from monitoring PDCCH according to the first search space group A1 to monitoring PDCCH according to the third search space group A3, the duration of the terminal equipment monitoring PDCCH according to the third search space group A3;
  • the second duration is used to indicate that when the terminal equipment switches from monitoring the PDCCH according to the second search space group A2 to monitoring the PDCCH according to the third search space group A3, the terminal equipment monitors the duration of the PDCCH according to the third search space group A3.
  • the network device determines that the terminal device is switched from monitoring the PDCCH according to the first search space group A1 to monitoring the PDCCH according to the third search space group A3, the network device does not send the PDCCH within the first duration;
  • the monitoring of the PDCCH according to the second search space group A2 is switched to monitoring the PDCCH according to the third search space group A3, and the network device does not send the PDCCH within the second time period.
  • both the first search space group A1 and the second search space group A2 configured by the terminal device may include one or more search spaces.
  • the intersection of the first search space group A1 and the second search space group A2 may be an empty set, that is, the first search space group A1 and the second search space group A2 do not include the same search space.
  • the first search space group A1 includes search space 1 and search space 2
  • the second search space group A2 includes search space 3 , search space 4 , and search space 5
  • the intersection of the first search space group A1 and the second search space group A2 may also be a non-empty set, that is, the first search space group A1 and the second search space group A2 have the same search space.
  • the first search space set includes search space 1 and search space 2
  • the second search space set includes search space 2, search space 3, and search space 4.
  • the method for the network device to configure the search space group for the terminal device may be: the network device configures the search space group by configuring the number of the search space group or configuring the range of the index value (index) of the search space group.
  • the manner in which the network device configures an empty search space group for the terminal device may be that the configuration information of any search space is not associated with the index of the empty search space group.
  • the network device directly configures the index corresponding to the empty search space group. It should be noted that the manner in which the network device configures the empty search space group for the terminal device can be used alone, and is not limited to be combined with the foregoing embodiments.
  • the network device configures the terminal device with a non-empty first search space group A1, a non-empty second search space group A2, and an empty third search space group A3.
  • both the first search space group A1 and the second search space group A2 include only one search space.
  • the first search space group A1 includes search space 1
  • the monitoring period corresponding to search space 1 is 2 time slots.
  • the second search space group A2 Including search space 2, the monitoring period corresponding to search space 2 is 5 time slots.
  • the network device further configures that the skip duration corresponding to the first search space group A1 is 3 time slots, and the skip duration corresponding to the second search space group A2 is 9 time slots. As shown in (a) of FIG.
  • the terminal device when the terminal device monitors the PDCCH according to the first search space group A1, that is, the search space 1, it receives the indication information from the network device in the time slot 1, thereby switching to monitoring according to the third search space group A3
  • the PDCCH that is, the PDCCH is not monitored, since the skip duration corresponding to the first search space group A1 is 3 time slots, the terminal equipment cuts out from the third search space group after 3 time slots.
  • the terminal equipment when the terminal equipment monitors the PDCCH according to the second search space group A2, that is, the search space 2, it receives the indication information from the network equipment in the time slot 1, thereby switching to monitoring according to the third search space group A3 PDCCH, that is, the PDCCH is not monitored. Since the skip duration corresponding to the third search space group A3 is 9 time slots, the terminal equipment cuts out from the third search space group A3 after 9 time slots.
  • the indication information of the network device may be included in the downlink control information DCI.
  • the first search space group A1 and the second search space group A2 each include two search spaces.
  • the first search space group A1 includes search space 1 and search space 2
  • the monitoring periods corresponding to search space 1 and search space 2 are both 2 time slots.
  • the frequency domain monitoring positions of search space 1 and search space 2 are the same
  • the time domain monitoring position of search space 1 is an even-numbered time slot in a monitoring period
  • the time domain monitoring position corresponding to search space 2 is a monitoring period. of odd-numbered time slots.
  • the second search space group A2 includes a search space 3 and a search space 4, and the monitoring periods corresponding to the search space 3 and the search space 4 are both 5 time slots.
  • the frequency domain monitoring positions of search space 3 and search space 4 are the same
  • the time domain monitoring position of search space 3 is the first time slot in a monitoring period
  • the time domain monitoring position of search space 4 is the first time slot in a monitoring period.
  • the network device also configures that the skip duration corresponding to the first search space group A1 is 3 time slots, and the skip duration corresponding to the second search space group A2 is 9 time slots. As shown in (a) of FIG.
  • the terminal device when the terminal device monitors the PDCCH according to the first search space group A1 (search space 1 and search space 2), it receives the indication information from the network device in time slot 1, thereby switching to the third The search space group A3 monitors the PDCCH, that is, does not monitor the PDCCH. Since the skip duration corresponding to the first search space group A1 is 3 time slots, the terminal equipment cuts out from the third search space group A3 after 3 time slots. As shown in (b) of FIG.
  • the terminal device when the terminal device monitors the PDCCH according to the second search space group A2 (search space 3 and search space 4), it receives the indication information from the network device in time slot 1, thereby switching to the third The search space group A3 monitors the PDCCH, that is, does not monitor the PDCCH. Since the skip duration corresponding to the third search space group A3 is 9 time slots, the terminal equipment cuts out from the third search space group A3 after 9 time slots.
  • the indication information of the network device may be included in the downlink control information DCI.
  • the skip duration corresponding to each non-empty search space group may be an absolute duration, that is, in milliseconds or time slots.
  • the skip duration corresponding to the first search space group A1 is 3ms
  • the skip duration corresponding to the second search space group A2 is 9ms
  • the skip duration corresponding to the first search space group A1 is 3 time slots
  • the skip duration corresponding to the second search space group A2 is 9 time slots.
  • the skip durations corresponding to all search spaces included in a non-empty search space group may be different.
  • the skip duration corresponding to each search space may be a multiple of its monitoring period. This application does not limit this.
  • the network device may configure the skip duration corresponding to each non-empty search space group by configuring a timer (timer). For example, the network device may configure a first timer with a length of 3 ms and a second timer with a length of 9 ms, respectively corresponding to the first search space group A1 and the second search space group A2. Further, when the terminal device switches from the first search space group A1 (or the second search space group A2) to the third search space group A3, the first timer (or the second timer) is started, and when the first timer ( or the second timer) expires, the terminal device switches out from the empty third search space group A3.
  • timer timer
  • the two non-empty search space groups correspond to different skip durations respectively.
  • the skip duration can be more matched with the monitoring period of the search space in the currently used search space group, thereby reducing the power consumption of the terminal device.
  • the terminal equipment can switch back to monitoring the PDCCH according to the original search space group.
  • the terminal equipment As shown in (a) of FIG. 5 , after the terminal equipment is cut out from the third search space group A3 after three time slots, it switches back to continue monitoring the PDCCH according to the original first search space group A1.
  • the terminal equipment As shown in (b) of FIG. 5 , after the terminal equipment is cut out from the third search space group A3 after 9 time slots, it switches back to continue monitoring the PDCCH according to the original second search space group A2.
  • the terminal device may switch to monitoring the PDCCH according to the default search space group.
  • the default search space group is the first search space group A1.
  • the terminal equipment is cut out from the third search space group A3 after 3 time slots, it switches to monitor the PDCCH according to the default first search space group A1.
  • the terminal equipment is cut out from the third search space group A3 after 9 time slots, it switches to monitor the PDCCH according to the default first search space group A1.
  • the default search space group may also be the second search space group A2, or another non-empty fourth search space group A4 configured by the network device.
  • the terminal device when the terminal device monitors the PDCCH according to the first search space group A1, that is, the search space 1, it receives the DCI from the network device in the time slot 1, thereby switching to The third search space group A3 monitors the PDCCH, and the DCI may include indication information indicating the skip duration (3 time slots) corresponding to the first search space group A1.
  • the terminal device monitors the PDCCH according to the first search space group A1, that is, the search space 1
  • the DCI may include indication information indicating the skip duration (3 time slots) corresponding to the first search space group A1.
  • the terminal device when the terminal device monitors the PDCCH according to the second search space group A2, that is, the search space 2, it receives the DCI from the network device in the time slot 1, thereby switching to monitoring the PDCCH according to the third search space group A3 , the DCI may include indication information indicating the skip duration (9 time slots) corresponding to the second search space group A2.
  • the configuration information of each non-empty search space group may configure its corresponding skip duration.
  • the configuration information of each search space group may be configured by the network device through high-level configuration signaling.
  • the high-level configuration signaling may also be referred to as higher layer signaling (higher layer signaling), and the high-level configuration signaling may be RRC signaling.
  • the configuration information of the first search space group A1 can configure its corresponding skip duration (3 time slots), and the configuration information of the second search space group A2 can configure its corresponding skip duration (9 time slot).
  • the configuration information of the first search space group A1 may include a first parameter, and the first parameter may indicate a skip duration corresponding to the first search space group A1.
  • the configuration information of the second search space group A2 may include a second parameter, and the second parameter may configure the skip duration corresponding to the second search space group A2.
  • the configuration information of the empty search space group may configure the mapping relationship between each non-empty search space group and the skip duration.
  • the configuration information of the third search space group A3 may be configured: the skip duration (3 time slots) corresponding to the first search space group A1 and the skip duration (9 slots) corresponding to the second search space group A2 time slot).
  • the configuration information of the third search space group A3 may include a first parameter and/or a second parameter, and the first parameter may indicate the skip duration (3 time slots) associated with the first search space group A1 and the second The skip duration (9 slots) associated with the search space group A2; or the first parameter indicates the skip duration (3 slots) associated with the first search space group A1, and the second parameter indicates the second search space group A2 The associated skip duration (9 slots).
  • different non-empty search space groups may correspond to different skip durations. Therefore, by using empty search space groups to stop monitoring the PDCCH for a period of time, power consumption of the terminal device can be reduced. Further, as shown in FIG. 5 and FIG. 6 , when the monitoring period of the search space included in the first search space group A1 is smaller than the monitoring period of the search space group included in the second search space group A2, the first duration may be shorter than the second duration. . In this way, the skip duration can be more matched with the search space group currently used by the terminal device, which can further reduce the power consumption of the terminal device.
  • the embodiment of the present application further provides another PDCCH monitoring method, which is applicable to the communication system shown in FIG. 1 .
  • the method includes: the network device configures a first search space group B1 for the terminal device, wherein the first search space group B1 is an empty search space group, that is, the first search space group B1 does not include any search space.
  • the terminal device When the terminal device receives the DCI sent by the network device, if the DCI includes the first indication information, the terminal device monitors the PDCCH according to the first search space group B1 within the first duration, that is, does not monitor the PDCCH within the first duration; if the DCI Including the second indication information, the terminal device monitors the PDCCH according to the first search space group B1 within the second duration, that is, does not monitor the PDCCH within the second duration, where the first duration and the second duration may be the same or different.
  • the network device when the network device sends the downlink control information DCI to the terminal device, if the DCI includes the first indication information, the first indication information instructs the terminal device to monitor the PDCCH according to the first search space group B1 within the first duration; Including second indication information, the second indication information instructs the terminal device to monitor the PDCCH according to the first search space group B1 within the second time period.
  • the network device further configures a non-empty second search space group B2 for the terminal device, wherein the second search space group B2 is a non-empty search space group, that is, the second search space group B2 includes at least one search space.
  • the terminal device receives the DCI sent by the network device, if the DCI includes the third indication information, the terminal device monitors the PDCCH according to the second search space group B2.
  • the network device further configures a non-empty third search space group B3 for the terminal device, that is, the third search space group B3 includes at least one search space, and the second search space group B2 is different from the third search space group B3.
  • the intersection of the second search space group B2 and the third search space group B3 may be an empty set or a non-empty set.
  • the terminal device receives the DCI sent by the network device, if the DCI includes the fourth indication information, the terminal device monitors the PDCCH according to the third search space group B3.
  • the network device may also configure more search space groups for the terminal device.
  • the indication information included in the DCI sent by the network device may indicate N state values.
  • the first indication information, the second indication information, the third indication information and the fourth indication information may respectively indicate four different state values among the N state values.
  • the state value indicated by the indication information included in the DCI may be bit value information.
  • the terminal device is configured with an empty first search space group B1, a non-empty second search space group B2 and a non-empty third search space group B3.
  • the indication information carried in the DCI sent by the network device may indicate different state values, and different state values match different indication meanings.
  • the indication meanings corresponding to different status values may be configured by the network device through RRC signaling.
  • the terminal device monitors the PDCCH for the first duration according to the first search space group B1, that is, in the first search space group B1.
  • the PDCCH is not monitored for a period of time; if the indication information included in the DCI indicates a state value of "10", the terminal device monitors the PDCCH for the second period of time according to the first search space group B1, that is, the PDCCH is not monitored for the second period of time; if the DCI If the indication information included in the DCI indicates the status value "00", the terminal equipment monitors the PDCCH according to the second search space group B2; if the indication information included in the DCI indicates the status value "01", the terminal equipment monitors according to the third search space group B3 PDCCH.
  • the skip duration corresponding to the currently used search space group can be dynamically indicated.
  • the empty first search space group B1 configured by the network device corresponds to two different skip durations.
  • one empty search space group may correspond to more skip durations that are the same or different, and are indicated by different indication information.
  • the network device can implement different skip durations by configuring timers.
  • the first duration and the second duration corresponding to the above-mentioned empty first search space group B1 may be 3 ms and 9 ms, respectively.
  • the duration corresponding to the first search space group B1 may also be in other forms.
  • the first duration and the second duration corresponding to the first search space group B1 may be 3 time slots and 9 time slots, respectively.
  • the terminal device when the terminal device monitors the PDCCH according to the empty search space group, after a period of time, it may switch back to monitoring the PDCCH according to the non-empty search space group.
  • the terminal device may switch back to monitoring the PDCCH according to the original search space group, or switch to monitoring the PDCCH according to the default search space group.
  • the original search space group may be a non-empty search space group used by the terminal device before the terminal device switches to the empty search space group.
  • different durations can be configured for an empty search space group, so that the terminal equipment can skip PDCCH monitoring of different durations.
  • the network device sends DCI to instruct the terminal device to switch to an empty search space group, that is, skip PDCCH monitoring for a period of time
  • the skip duration can match the search space group currently used by the terminal device, thereby reducing the power consumption of the terminal device.
  • one empty search space group may correspond to different skip durations.
  • the embodiment of the present application also provides another PDCCH monitoring method, which uses different empty search space groups to correspond to different skip durations.
  • the method includes: a network device configures a first search space group C1 and a second search space group C2 for a terminal device, wherein the first search space group C1 and the second search space group C2 are both empty search space groups, that is, the first search space group C1 and the second search space group C2 are empty search space groups. Neither the search space group C1 nor the second search space group C2 includes any search space.
  • the terminal device receives the DCI sent by the network device, and if the DCI includes the first indication information, the terminal device monitors the PDCCH according to the first search space group C1 within the first duration, that is, stops monitoring the PDCCH within the first duration; if the DCI includes the first search space group C1 In the second indication information, the terminal device monitors the PDCCH according to the second search space group C2 within the second duration, that is, stops monitoring the PDCCH within the second duration, and the first duration and the second duration may be the same or different.
  • the first search space group C1 corresponds to a first duration
  • the second search space group C2 corresponds to a second duration.
  • the network device when the network device sends the downlink control information DCI to the terminal device, if the DCI includes the first indication information, the first indication information instructs the terminal device to monitor the PDCCH according to the first search space group C1 within the first duration;
  • the second indication information is included, where the second indication information instructs the terminal device to monitor the PDCCH according to the second search space group C2 within the second time period.
  • the network device also configures a non-empty third search space group C3 for the terminal device, and the terminal device can switch to the non-empty third search space after monitoring the PDCCH according to the first search space group C1 within the first time period.
  • Group C3 monitors PDCCH, that is, starts to detect PDCCH.
  • the terminal device may also switch to monitoring the PDCCH according to the non-empty third search space group C3.
  • the network device may configure more non-empty search space groups for the terminal device, and the network device may also configure more empty search space groups for the terminal device.
  • the terminal device is configured with an empty first search space group C1 and an empty second search space group C2, and a non-empty third search space group C3.
  • the terminal device receives the indication information sent by the network device in time slot 1, and thus switches to monitoring the PDCCH according to the first search space group C1, and the first duration corresponding to the first search space group C1 is 3 slots, therefore, the terminal equipment skips PDCCH monitoring for 3 slots.
  • the terminal device monitors the PDCCH according to the third search space group C3.
  • the terminal device receives the indication information sent by the network device in time slot 1, and thus switches to monitoring the PDCCH according to the second search space group C2, and the second duration corresponding to the second search space group C2 is 9 slots, therefore, the terminal device skips PDCCH monitoring for 9 slots.
  • the terminal device monitors the PDCCH according to the third search space group C3.
  • the indication information sent by the network device may be included in the downlink control information DCI.
  • the durations corresponding to different empty search space groups may also be in other forms, for example, the first duration corresponding to the first search space group C1 is 3ms, and the duration corresponding to the second search space group C2 is 9ms.
  • the network device may configure the first search space group C1 to correspond to the first duration through RRC signaling, and the RRC signaling may also configure the second search space group C2 to correspond to the second duration.
  • the corresponding relationship between the empty search space group and the skip duration can be indicated by the state value as shown in Table 2.
  • the terminal device is configured with an empty first search space group C1 and an empty second search space group C2, as well as a non-empty third search space group C3 and a non-empty fourth search space Group C4.
  • the indication information carried in the DCI sent by the network device may indicate different state values, and different state values match different indication meanings. Exemplarily, indication meanings corresponding to different status values may be configured by the network device through RRC signaling.
  • the terminal device when the terminal device receives the DCI sent by the network device, if the indication information included in the DCI indicates a state value of "11", the terminal device monitors the PDCCH for the first duration according to the first search space group C1, that is, in the first search space group C1.
  • the PDCCH is not monitored for a period of time; if the indication information included in the DCI indicates the status value "10", the terminal device monitors the PDCCH for the second period of time according to the second search space group C2, that is, the PDCCH is not monitored for the second period of time; if the DCI If the indication information included in the DCI indicates the status value "00", the terminal equipment monitors the PDCCH according to the third search space group C3; if the indication information included in the DCI indicates the status value "01", the terminal equipment monitors according to the fourth search space group C4 PDCCH.
  • the skip duration corresponding to the currently used search space group can be dynamically indicated.
  • the network device configures an empty first search space group C1 and an empty second search space group C2 corresponding to corresponding skip durations respectively.
  • the network device may configure more empty search space groups and their corresponding skip durations, and indicate through different indication information that the skip durations corresponding to each empty search space group may be the same or different.
  • the network device can implement different skip durations by configuring timers.
  • the indication information included in the DCI can indicate the state value, and the empty search space group corresponding to the state value and the skip duration corresponding to the empty search space group can be determined, so as to realize the skipping of different durations. PDCCH monitoring.
  • the configuration information of each empty search space group may configure its corresponding skip duration.
  • the configuration information of the first search space group C1 may include a first parameter, and the first parameter may indicate a first duration
  • the configuration information of the second search space group C2 may include a second parameter, and the second parameter may indicate Second time.
  • a terminal device uses an empty search space group, it can obtain the skip duration corresponding to the empty search space group according to its configuration information.
  • the terminal device may switch back to monitoring the PDCCH according to the non-empty search space group.
  • the terminal device may switch back to monitoring the PDCCH according to the original search space group (eg, the third search space group C3 shown in FIG. 8 ), or switch to monitoring the PDCCH according to the default search space group.
  • different skip durations can be configured for the terminal equipment through different empty search space groups.
  • the network equipment sends DCI to instruct the terminal equipment to switch to the empty search space group, that is, when skipping PDCCH monitoring for a period of time
  • the The stale length can match the search space group currently used by the terminal device, thereby reducing the power consumption of the terminal device.
  • the terminal equipment needs to switch to monitoring the PDCCH according to the empty search space group after receiving the downlink scheduling information DCI sent by the network equipment, that is, the instruction information is required to instruct the terminal equipment to switch to the empty search space group.
  • the terminal device does not receive scheduling information for a period of time, it is likely that it will not receive scheduling information in the next period of time. Therefore, if the terminal equipment does not receive scheduling information within a period of time, it can trigger the terminal equipment to stop monitoring the PDCCH for a period of time, that is, no indication information is required to instruct the terminal equipment to switch to an empty search space group (implicit switching).
  • the embodiment of the present application further provides another PDCCH monitoring method, which is applicable to the communication system shown in FIG. 1 .
  • the method may include: the terminal device is configured with a first search space group D1, wherein the first search space group D1 is a non-empty search space group, that is, the first search space group D1 includes at least one search space.
  • the terminal device monitors the PDCCH according to the first search space group D1, if the terminal device does not receive the scheduling after the first duration, that is, the terminal device does not monitor the PDCCH after the first duration, the terminal device stops monitoring the PDCCH.
  • the terminal device is configured with at least a first search space group D1 and a second search space group D2, wherein the first search space group D1 is a non-empty search space group, that is, the first search space group D1 includes at least one search space, and the second search space group D2 is an empty search space group, that is, the second search space group D2 does not include any search space.
  • the terminal equipment monitors the PDCCH according to the first search space group D1
  • the terminal equipment switches to monitor the PDCCH according to the second search space group D2, that is, does not monitor the PDCCH.
  • the terminal equipment can be instructed to automatically switch to monitoring the PDCCH according to the empty search space group after a period of time, without the need for the network equipment to send signaling instructions, thereby reducing signaling overhead.
  • a first timer is started, and the duration of the first timer is set to the first duration. If the terminal device fails to monitor the PDCCH after the first duration, that is, After the first timer expires, the terminal device switches to monitoring the PDCCH according to the second search space group D2; if the terminal device monitors the PDCCH, it resets the first timer, and the first timer starts to re-time until it times out. The device switches to monitoring the PDCCH according to the second search space group D2.
  • the terminal device monitors the PDCCH according to the first search space group D1.
  • the terminal device automatically switches back to the first search space group D1 to continue monitoring the PDCCH.
  • the search space group D1 transmits the PDCCH to the terminal device. Since the second search space group D2 is an empty search space group, that is, the terminal equipment does not need to monitor the PDCCH in the second time period, the power consumption of the terminal equipment can be reduced, and accordingly, the network equipment does not send the PDCCH to the terminal equipment in the second period of time.
  • the first duration and the second duration may not be associated.
  • the first duration and the second duration may or may not be equal.
  • the first duration and the second duration may have an associated relationship, that is, the first duration may be determined according to the second duration, or the second duration may be determined according to the first duration.
  • the first duration may be positively correlated with the second duration.
  • the first duration is positively correlated with the second duration, which may be proportional to the first duration and the second duration, or there is a mapping relationship between the first duration and the second duration, or the first duration is added/subtracted by the second duration obtained by a number.
  • the first duration is proportional to the second duration, and the first duration may be obtained by multiplying/dividing a number by the second duration.
  • the first duration may be k times the second duration, where k is not Equal to 0, k can be configured by the network device or a predefined value.
  • the network device can configure a first duration for the terminal device, and the terminal device can then predict the second duration according to the first duration; or, the network device can configure a second duration for the terminal device, and the terminal device can then predict the first duration according to the second duration duration, thereby further reducing signaling overhead.
  • the network device configures a non-empty first search space group D1 for the terminal device, and the network device also configures the terminal device with a first preset duration, where the first preset duration is the first duration or is used for determining The second duration of the first duration, where the first duration is the maximum duration that the terminal device does not monitor the PDCCH according to the first search space group D1 before the terminal device stops monitoring the PDCCH.
  • the network device determines that the terminal device monitors the PDCCH according to the first search space group D1 if the network device does not send the PDCCH after the first time period, the network device determines that the terminal device stops monitoring the PDCCH and stops sending the PDCCH.
  • the network device also configures an empty second search space group D2 for the terminal device.
  • the first duration is that before the terminal device monitors the PDCCH according to the second search space group D2, the terminal device does not monitor the PDCCH according to the first search space group D1. Maximum duration of PDCCH.
  • the first preset duration is the first duration, and the second duration is determined according to the first duration; or, the first preset duration is the second duration, and the first preset duration is used to determine the first duration.
  • the second duration is the maximum duration for which the terminal device monitors the PDCCH according to the second search space group D2 after the terminal device fails to monitor the PDCCH according to the first search space group D1 for the first duration.
  • the terminal device may also be configured with a third search space group D3, which is a non-empty search space group.
  • the first search space group D1 is different from the third search space group D3, and the intersection of the first search space group D1 and the third search space group D3 may be an empty set or a non-empty set.
  • the terminal device monitors the PDCCH according to the third search space group D3, if the terminal device does not receive scheduling after the third time period, that is, the terminal device does not monitor the PDCCH after the third time period, the terminal device stops monitoring the PDCCH. After the terminal device stops monitoring the PDCCH for the fourth time period, it switches back to the third search space group D3 to monitor the PDCCH.
  • the terminal device when the terminal device monitors the PDCCH according to the third search space group D3, if the terminal device does not monitor the PDCCH after a third time period, the terminal device switches to monitor the PDCCH according to the second search space group D3.
  • PDCCH that is, the PDCCH is not monitored.
  • the terminal device After the terminal device monitors the PDCCH according to the second search space group D2 for a fourth time period, it switches back to the third search space group D3 to monitor the PDCCH. Since the second search space group D2 is an empty search space group, that is, the terminal equipment does not need to monitor the PDCCH in the fourth time period, thereby reducing the power consumption of the terminal equipment.
  • the third duration and the fourth duration may or may not have an associated relationship, and the relationship between the third duration and the fourth duration may refer to the above description of the relationship between the first duration and the second duration, This application will not repeat them here.
  • the network device configures a non-empty third search space group D3 for the terminal device, and the network device also configures a second preset duration for the terminal device, wherein the second preset duration is the third duration or is A fourth duration for determining the third duration, where the third duration is the maximum duration that the terminal device does not monitor the PDCCH according to the third search space group D3 before the terminal device stops monitoring the PDCCH.
  • the network device determines that the terminal device monitors the PDCCH according to the third search space group D3
  • the network device determines that the terminal device stops monitoring the PDCCH and stops sending the PDCCH.
  • the third duration is the maximum duration for which the terminal device does not monitor the PDCCH according to the third search space group D3 before the terminal device monitors the PDCCH according to the second search space group D2.
  • the second preset duration is a third duration, and the fourth duration is determined according to the third duration; or, the second preset duration is a fourth duration, and the second preset duration is used to determine the third duration.
  • the fourth duration is the maximum duration for which the terminal device monitors the PDCCH according to the second search space group D2 after the terminal device fails to monitor the PDCCH according to the third search space group D3 for the third duration.
  • the first duration corresponding to the first search space group D1 and the third duration corresponding to the third search space group D3 may be the same or different.
  • the first duration corresponding to the first search space group D1 and the third duration corresponding to the third search space group D3 may be configured by the network device through high-layer configuration signaling.
  • the terminal device receives the high-layer configuration signaling RRC sent by the network device, and the RRC signaling may include duration configuration information, where the duration configuration information may include the correspondence between the first search space group D1 and the first duration, and/or , the correspondence between the third search space group D3 and the third duration.
  • the duration configuration information may include the correspondence between the first search space group D1 and the second duration, and/or the correspondence between the third search space group D3 and the fourth duration.
  • the configuration information of each non-empty search space group may configure its corresponding duration.
  • the configuration information of each search space group may be configured by the network device through high-level configuration signaling.
  • the configuration information of the first search space group D1 may include a first parameter, and the first parameter may indicate a first duration
  • the configuration information of the third search space group D3 may include a second parameter, the second parameter The parameter may indicate a third duration.
  • the configuration information of the first search space group D1 may further indicate a second duration
  • the configuration information of the third search space group D3 may further indicate a fourth duration.
  • the second duration corresponding to the first search space group D1 and the fourth duration corresponding to the third search space group D3 may also be indicated by the configuration information of the empty second search space group D2. This application does not limit this.
  • the terminal equipment when monitoring the PDCCH, the terminal equipment can switch among the above three search space groups. Specifically, when the terminal equipment switches from monitoring the PDCCH according to the non-empty search space group to monitoring the PDCCH according to the empty search space group, the switching may be performed in the above-mentioned implicit indication manner.
  • the DCI indication sent by the network device may be used.
  • the DCI sent by the network device to the terminal device may include indication information. Specifically, the indication information included in the DCI may indicate the switching of the search space group in the form of a bit value.
  • the indication information in the DCI may indicate the switching of the search space group in an absolute value manner, that is, the value of the indication information indicates which search space to monitor.
  • the terminal equipment monitors the PDCCH according to the first search space group D1 or the third search space group D3
  • the terminal device switches to monitor the PDCCH according to the first search space group D1
  • the indication information takes a value of “1” corresponding to the new search space group being the first search space group D1.
  • the terminal device switches to monitoring the PDCCH according to the third search space group D3, that is, the value of the indication information is "0" corresponding to the new search space.
  • the group is the third search space group D3.
  • the indication information in the DCI may indicate the switching of the search space group in a relative value manner, that is, the value of the indication information indicates whether the terminal device switches to a new non-empty search space group to monitor the PDCCH.
  • Table 4 when the terminal equipment monitors the PDCCH according to the first search space group D1, if the indication information included in the DCI received by the terminal equipment is "1", the terminal equipment continues to monitor the PDCCH according to the first search space group D1 , if the indication information included in the DCI received by the terminal device is "0", the terminal device switches to monitoring the PDCCH according to the third search space group D3.
  • the terminal equipment monitors the PDCCH according to the third search space group D3
  • the indication information included in the DCI received by the terminal equipment is "1”
  • the terminal equipment continues to monitor the PDCCH according to the third search space group D3.
  • the indication information included in the DCI of takes a value of "0”, and the terminal device switches to monitor the PDCCH according to the first search space group D1. That is to say, the value of the indication information is "1”, which means that the terminal equipment continues to monitor the PDCCH according to the original search space group, and the value of the indication information is "0", which means that the terminal equipment switches to another search space group to monitor the PDCCH.
  • a 2-bit value is required to indicate that a terminal device switches among three search space groups.
  • a 2-bit value is required to indicate that a terminal device switches among three search space groups.
  • the terminal equipment after the terminal equipment is implicitly switched from monitoring the PDCCH according to the first search space group D1 to monitoring the PDCCH according to the second search space group D2 (that is, not monitoring the PDCCH), it passes through the non-empty first search space group D1 corresponding to After the skip duration (eg, 3 time slots shown in FIG. 5 ), the empty search space group is cut out.
  • the terminal equipment after the terminal equipment is implicitly switched from monitoring the PDCCH according to the third search space group D3 to monitoring the PDCCH according to the second search space group D2, after the skip duration corresponding to the non-empty third search space group D3 (for example, Fig. 9 slots shown in 5), the empty search space group is cut out.
  • the configuration information of each non-empty search space group may configure the corresponding skip duration, or the configuration information of the empty search space group may configure the mapping relationship between each non-empty search space group and the skip duration, specifically
  • the configuration method reference may be made to the foregoing description, which will not be repeated here.
  • the terminal equipment can switch back to monitoring the PDCCH according to the original search space group or switch to monitoring the PDCCH according to the default search space group after implicitly switching to the empty search space group to monitor the PDCCH for a period of time.
  • the terminal device switches out of the empty search space group, reference may be made to FIG. 5 , FIG. 7 and their corresponding descriptions, which will not be repeated here.
  • non-empty search space group configured by the network device for the terminal device may be more groups, which is not limited in this application.
  • the base station will send a PDCCH to schedule uplink data transmission. Therefore, after the terminal equipment sends SR or RACH, it should start monitoring the PDCCH. Based on this, in some embodiments, when the terminal equipment does not monitor the PDCCH (for example, the terminal equipment monitors the PDCCH according to the empty search space group), after the terminal equipment sends the SR or RACH, the terminal equipment starts to monitor the PDCCH (for example, the terminal equipment starts monitoring the PDCCH according to the empty search space group).
  • the search space monitoring PDCCH switches to monitoring the PDCCH according to the non-empty search space group).
  • the network device can send the PDCCH.
  • the terminal device monitors the PDCCH according to the non-empty search space group in the n+kth time slot.
  • the slot transmits the PDCCH, where k is an integer greater than or equal to 1.
  • the terminal device may switch back to monitoring the PDCCH according to the original search space group, or switch to monitoring the PDCCH according to the default search space group.
  • the terminal device may switch back to monitoring the PDCCH according to the original search space group, or switch to monitoring the PDCCH according to the default search space group.
  • the terminal device can automatically switch to the empty search space group, and at the same time, different skip durations corresponding to different search space groups can be realized, which can reduce the power consumption of the terminal device and save energy at the same time. Signaling overhead.
  • the present application also proposes a method for configuring empty search space groups.
  • the configuration information of the search space may include the index value of the associated search space group, indicating that the search space group corresponding to the index value includes the search space.
  • the configuration information of the search space 1 may include the index value "0" of the first search space group and the index value "1" of the second search space group, Indicates that search space 1 is associated with the first search space group and the second search space group, that is, the first search space group corresponding to the index value "0" and the second search space group corresponding to the index value "1" both include search space 1.
  • the network device configures the search space for the terminal device in the above manner, there will be a problem of ambiguous understanding. For example, if the network device configures at most two search space groups for the terminal device, that is, the network device can configure one search space group or two search space groups for the terminal device. If the network device configures three search spaces for the terminal device, they are search space 1, search space 2 and search space 3 respectively. Among them, search space 1, search space 2 and search space 3 are only associated with the first search space group. At this point, there are two interpretations:
  • the network device only configures one search space group for the terminal device, that is, the first search space group;
  • the network device configures two search space groups for the terminal device, that is, a first search space group and a second search space group.
  • the first search space group is a non-empty search space group, including search space 1, search space 2 and search space 3
  • the second search space group is an empty search space group, that is, the second search space group does not include any search space .
  • Example 1 As mentioned above, the network device can directly configure the index value corresponding to the empty search space group.
  • Example 2 The network device configures first information for the terminal device. Accordingly, the terminal device receives the first information configured by the network device, where the first information indicates that the network device configures n search space groups for the terminal device. Specifically, the first information includes the number n of the search space groups configured by the network device for the terminal device, or the first information includes an index value range of 0 to n-1 of the search space groups configured by the network device for the terminal device; or One piece of information includes the maximum value n-1 of the index value of the search space group configured by the network device for the terminal device. It can be understood that the index value range and the maximum index value of the search space group may also be in other forms. For example, the index value range of the search space group is 1 to n, and the maximum index value is n.
  • the first information indicates that the network device has configured n search space groups for the terminal device, wherein m search space groups in the n search space groups have associated search spaces, that is, the m search space groups are not. Empty search space groups, the remaining (n-m) search space groups in the n search space groups do not have associated search spaces, that is, the (n-m) search space groups are empty search space groups.
  • the network device can directly configure the number of search space groups to be 3, or the network device can configure the index value of the search space group to be in the range of "0-2", or the network device can configure the number of search space groups to be 3.
  • the maximum value of the index value in the configuration search space group is "2".
  • the index values corresponding to the first search space group, the second search space group and the third search space group are "0, 1, 2" respectively.
  • the third search space group is an empty search space group.
  • the network device can know the size of the configured search space group by configuring the number of search space groups for the terminal device, or configuring the range of the index value of the search space group, or configuring the maximum value of the index value of the search space group. Therefore, the empty search space group and the non-empty search space group can be distinguished by "whether there is a search space association", so as to avoid the above-mentioned problem of ambiguous understanding.
  • Example 3 The network device configures a first search space for the terminal device, where the first search space is associated with a first search space group, where the first search space group corresponds to a first index. If the first index is greater than the second index, the terminal device determines that a second search space group is configured, and the second search space group corresponds to the second index.
  • the second search space group does not include any search space, that is, the second search space group is an empty search space group.
  • the terminal device determines that the third search space group is not configured, wherein the third search space group is not configured.
  • the search space group corresponds to the third index.
  • the network device for the terminal device For example, if the first search space group configured by the network device for the terminal device is associated with at least search space 1, and the index value corresponding to the first search space group is "1", if the search space group with the index value "0" is not associated with any search space group Search space, since the index value "1" is greater than the index value "0", in this example, both the network device and the terminal device consider that the search space group with the index value "0" is allocated to the terminal device, and the index value is A search space group of "0" is an empty search space group.
  • the search space group with the index value "2" is not associated with any search space, since the index value "1" is smaller than the index value "2", in this example, both the network device and the terminal device consider that there is no index value.
  • the search space group of "2" that is, the network device is not configured with a search space group whose index value is "2".
  • the network device can assign a smaller index value to an empty search space group, and distinguish an empty search space group from a non-empty search space according to the size of the index value and "whether there is a search space association" groups and unconfigured search space groups, so that the above-mentioned problem of ambiguity can be avoided without adding new cells.
  • the method for configuring an empty search space group in the above example may be combined with the method for monitoring the PDCCH provided in any of the above embodiments, or may be used alone, which is not limited.
  • the communication apparatus 1100 may include a transceiver unit 1101 and a processing unit 1102 .
  • the transceiver unit 1101 is used for the communication device 1100 to receive information (message or data) or send information (message or data), and the processing unit 1102 is used to control and manage the actions of the communication device 1100 .
  • the processing unit 1102 can process the signal received by the transceiving unit 1101 , and the processing unit 1102 can also control the steps performed by the transceiving unit 1101 .
  • the communication apparatus 1100 may specifically be the terminal device in the foregoing embodiment, a processor, a chip or a chip system in the terminal device, or a functional module, etc.; or, the communication apparatus 1100 may specifically be the above-mentioned The network device in the embodiment, the processor, chip or chip system of the network device, or a functional module, etc.
  • the communication apparatus 1100 when used to implement the functions of the terminal device in the above-mentioned embodiment, it may specifically include:
  • the terminal device is configured with a first search space group, wherein the first search space group includes at least one search space.
  • the processing unit 1102 monitors the PDCCH according to the first search space group, if the processing unit 1102 does not monitor the PDCCH after a first period of time, the processing unit 1102 stops monitoring the PDCCH.
  • the terminal device is further configured with a second search space group, wherein the second search space group does not include any search space.
  • the processing unit 1102 stopping monitoring the PDCCH includes: the processing unit 1102 monitoring the PDCCH according to the second search space group.
  • the processing unit 1102 after the processing unit 1102 monitors the PDCCH according to the second search space group for a second time period, the processing unit 1102 is configured to monitor the PDCCH according to the first search space group.
  • the first duration is configured by a network device, and the second duration is determined according to the first duration; or the second duration is configured by the network device , and the first duration is determined according to the second duration.
  • the first duration is positively correlated with the second duration.
  • the first duration is proportional to the second duration.
  • the terminal device is configured with a third search space group, the third search space group includes at least one search space, and the first search space group is different from the third search space group ;
  • the processing unit 1102 monitors the PDCCH according to the third search space group, if the processing unit 1102 does not monitor the PDCCH after a third time period, the processing unit 1102 is configured to monitor the PDCCH according to the second search space group .
  • the processing unit 1102 after the processing unit 1102 monitors the PDCCH according to the second search space group for a fourth time period, the processing unit 1102 is configured to monitor the PDCCH according to the third search space group.
  • the third duration is configured by the network device, and the fourth duration is determined according to the third duration; or the fourth duration is the network device configured, the third duration is determined according to the fourth duration.
  • the transceiver unit 1101 is further configured to receive downlink control information DCI, and when the processing unit 1102 monitors the PDCCH according to the first search space group, if the transceiver unit 1101 receives the DCI and The first indication information included in the DCI is the first value, and the processing unit 1102 monitors the PDCCH according to the first search space group; if the transceiver unit 1101 receives DCI and the DCI includes the The first indication information is the second value, and the processing unit 1102 monitors the PDCCH according to the third search space group.
  • the processing unit 1102 monitors the PDCCH according to the third search space group
  • the transceiver unit 1101 receives DCI and the first indication information included in the DCI is the first value
  • the processing unit 1102 monitors the PDCCH according to the third search space group
  • the transceiver unit 1101 receives DCI and the first indication information included in the DCI is the second value
  • the processing unit 1102 according to the first A search space group monitors the PDCCH.
  • the transceiver unit 1101 is further configured to send an uplink scheduling request SR or a random access channel RACH.
  • the processing unit 1102 monitors the PDCCH according to the second search space group, after the transceiver unit 1101 sends an uplink scheduling request SR or a random access channel RACH, the processing unit 1102 monitors the PDCCH according to the first search space group. .
  • the transceiver unit 1101 is further configured to receive high-level configuration signaling sent by a network device, where the high-level configuration signaling indicates that the first search space group corresponds to the first duration.
  • the high layer configuration signaling indicates that the identifier of the first search space group corresponds to the first duration.
  • the communication apparatus 1100 when used to implement the function of the network device in the above embodiment, it may specifically include:
  • the network device configures a first search space group for the terminal device, wherein the first search space group includes at least one search space; the network device configures the terminal device with a first preset duration, and the first preset duration is the first duration or is used to determine the first duration, where the first duration is the maximum duration that the terminal device does not monitor the PDCCH according to the first search space group before the terminal device stops monitoring the PDCCH .
  • the processing unit 1102 determines that the terminal device monitors the PDCCH according to the first search space group, if the transceiver unit 1101 does not transmit the PDCCH after the first time period, the The processing unit 1102 determines that the terminal device stops monitoring the PDCCH, and the transceiver unit 1101 stops sending the PDCCH.
  • the network device further configures a second search space group for the terminal device, wherein the second search space group does not include any search space; the first duration is the Before the terminal device stops monitoring the PDCCH, the maximum duration that the terminal device does not monitor the PDCCH according to the first search space group, including: the first duration is before the terminal device monitors the PDCCH according to the second search space group. , the terminal device does not monitor the maximum duration of the PDCCH according to the first search space group.
  • the first preset duration is the first duration, and the second duration is determined according to the first duration; or the first preset duration is used to determine the The first duration, the first preset duration is the second duration; wherein, the second duration is that after the terminal device fails to monitor the PDCCH according to the first search space group after the first duration, The terminal device monitors the maximum duration of the PDCCH according to the second search space group.
  • the first duration is positively correlated with the second duration.
  • the first duration is proportional to the second duration.
  • the network device further configures a third search space group for the terminal device, wherein the third search space group includes at least one search space, and the first search space group is related to the The third search space group is different; the network device configures a second preset duration for the terminal device, and the second preset duration is the third duration or is used to determine the third duration, wherein the first duration
  • the third duration is the maximum duration that the terminal device does not monitor the PDCCH according to the third search space group before the terminal device stops monitoring the PDCCH.
  • the processing unit 1102 determines that the terminal device monitors the PDCCH according to the third search space group, if the transceiver unit 1101 does not transmit the PDCCH after the third time period, the processing unit 1102 determines that the terminal device monitors the PDCCH according to the second search space group, and the transceiver unit 1101 stops transmitting the PDCCH.
  • the transceiver unit 1101 when the processing unit 1102 determines that the terminal device monitors the PDCCH according to the first search space group, the transceiver unit 1101 sends DCI to the terminal device, if the DCI includes The first indication information is a first value, and the first indication information instructs the terminal device to monitor the PDCCH according to the first search space group; if the first indication information included in the DCI is a second value, The first indication information instructs the terminal device to monitor the PDCCH according to the third search space group.
  • the transceiver unit 1101 sends DCI to the terminal device, if the first indication information included in the DCI is the The first value, the first indication information instructs the terminal device to monitor the PDCCH according to the third search space group; if the first indication information included in the DCI is the second value, the first An indication message instructs the terminal device to monitor the PDCCH according to the first search space group.
  • the transceiver unit 1101 is further configured to receive an uplink scheduling request SR or a random access channel RACH.
  • the processing unit 1102 determines that the terminal device monitors the PDCCH according to the second search space group
  • the network device performs The first search space group sends the PDCCH to the terminal device.
  • the transceiver unit 1101 is further configured to send high-level configuration signaling, where the high-level configuration signaling indicates that the first search space group is related to the first duration.
  • the high-layer configuration signaling includes configuration information of the first search space group
  • the configuration information of the first search space group includes a first parameter
  • the first parameter indicates the or the high layer configuration signaling includes configuration information of the first search space group and the first duration.
  • each functional unit in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a U disk, a removable hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk and other media that can store program codes.
  • the communication apparatus 1200 may include a transceiver 1201 and a processor 1202 .
  • the communication apparatus 1200 may further include a memory 1203 .
  • the memory 1203 may be disposed inside the communication device 1200 or outside the communication device 1200 .
  • the processor 1202 can control the transceiver 1201 to receive and transmit data and the like.
  • the processor 1202 may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP.
  • the processor 1202 may further include a hardware chip.
  • the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the above-mentioned PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general-purpose array logic (generic array logic, GAL) or any combination thereof.
  • the transceiver 1201, the processor 1202 and the memory 1203 are connected to each other.
  • the transceiver 1201, the processor 1202 and the memory 1203 are connected to each other through a bus 1704;
  • the bus 1704 may be a Peripheral Component Interconnect (PCI) bus or an extended industry standard Structure (Extended Industry Standard Architecture, EISA) bus, etc.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 12, but it does not mean that there is only one bus or one type of bus.
  • the memory 1203 is used to store programs and the like.
  • the program may include program code, the program code including computer operation instructions.
  • the memory 1203 may include RAM, and may also include non-volatile memory, such as one or more disk memories.
  • the processor 1202 executes the application program stored in the memory 1203 to realize the above-mentioned functions, thereby realizing the functions of the communication device 1200 .
  • the communication apparatus 1200 may be the terminal device in the foregoing embodiment; it may also be the network device in the foregoing embodiment.
  • the transceiver 1201 can implement the transceiver operation performed by the terminal device in the embodiment of the present application; the processor 1202 can implement the present application Other operations other than the transceiving operation performed by the terminal device in the embodiment.
  • the related descriptions in the embodiments of the present application which are not described in detail here.
  • the transceiver 1201 may implement the transceiving operation performed by the network device in the embodiment of the present application; the processor 1202 may implement this Other operations other than the transceiving operation performed by the network device in the embodiments of the application.
  • the processor 1202 may implement this Other operations other than the transceiving operation performed by the network device in the embodiments of the application.
  • the embodiments of the present application provide a communication system, and the communication system may include the terminal device, the network device, and the like involved in the above embodiments.
  • Embodiments of the present application further provide a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and when the computer program is executed by a computer, the computer can implement the PDCCH monitoring method provided by the above method embodiments .
  • Embodiments of the present application further provide a computer program product, where the computer program product is used to store a computer program, and when the computer program is executed by a computer, the computer can implement the PDCCH monitoring method provided by the above method embodiments.
  • Embodiments of the present application further provide a chip, including a processor, which is coupled to a memory and configured to invoke a program in the memory so that the chip implements the PDCCH monitoring method provided by the above method embodiments.
  • An embodiment of the present application further provides a chip, where the chip is coupled to a memory, and the chip is used to implement the PDCCH monitoring method provided by the above method embodiments.
  • the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

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Abstract

本申请提供一种物理下行控制信道PDCCH监测的方法及装置,该方法包括:终端设备被配置第一搜索空间组和第二搜索空间组,其中,该第一搜索空间组包括至少一个搜索空间,该第二搜索空间组不包括任何搜索空间;终端设备根据该第一搜索空间组监测PDCCH时,若该终端设备经过第一时长没有监测到PDCCH,该终端设备根据该第二搜索空间组监测PDCCH。通过上述方法,终端设备经过一段时间没有监测到PDCCH时,会自动切换到根据空搜索空间组监测PDCCH,即停止监测PDCCH,而不需要网络设备发送指示信息指示。因此,可以在降低终端设备功耗的同时,降低信令开销。

Description

一种物理下行控制信道监测的方法及装置
本申请要求在2021年2月27日提交中国国家知识产权局、申请号为202110221316.3的中国专利申请的优先权,发明名称为“一种参考信号指示方法”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。本申请要求在2021年3月29日提交中国国家知识产权局、申请号为202110335455.9的中国专利申请的优先权,发明名称为“一种物理下行控制信道监测的方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。本申请要求在2021年6月17日提交中国国家知识产权局、申请号为202110669469.4的中国专利申请的优先权,发明名称为“一种物理下行控制信道监测的方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域,尤其涉及一种物理下行控制信道(physical downlink control channel,PDCCH)监测的方法及装置。
背景技术
在网络设备和终端设备进行数据传输之前,网络设备会向终端设备发送PDCCH。为了避免丢失PDCCH,终端设备需要按照网络设备的配置频繁地监测PDCCH,然而,终端设备频繁监测PDCCH的行为会导致终端设备的功耗较高。目前,针对终端设备的功耗节省的研究越来越普遍,减少终端设备功耗的细节优化方案成为业界研究方向。
发明内容
本申请提供一种物理下行控制信道PDCCH监测的方法及装置,以解决现有技术中终端设备频繁监测PDCCH导致功耗较高的问题。
第一方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:终端设备被配置第一搜索空间组,其中,该第一搜索空间组包括至少一个搜索空间。终端设备根据第一搜索空间组监测PDCCH时,若终端设备经过第一时长没有监测到PDCCH,终端设备停止监测PDCCH。
通过上述方法,终端设备经过一段时间没有监测到PDCCH时,会自动停止监测PDCCH,而不需要网络设备发送指示信息指示。因此,可以在降低终端设备功耗的同时,降低信令开销。
在一个可能的设计中,终端设备还被配置第二搜索空间组,其中,该第二搜索空间组不包括任何搜索空间。终端设备停止监测PDCCH,具体包括:终端设备根据该第二搜索空间组监测PDCCH。这样,终端设备经过一段时间没有监测到PDCCH时,会自动切换到根据空搜索空间组监测PDCCH,从而实现停止监测PDCCH,而不需要网络设备发送指示信息指示。
在一个可能的设计中,终端设备由根据第一搜索空间组切换到根据第二搜索空间组监测PDCCH时,终端设备根据第二搜索空间组监测PDCCH经过第二时长后,终端设备根据第一搜索空间组监测PDCCH。也就是说,终端设备停止监测PDCCH经过第二时长后,会切出该空搜索空间组继续监测PDCCH。
在一种可能的设计中,第一时长是网络设备配置的,第二时长是根据第一时长确定的;或者第二时长是网络设备配置的,第一时长是根据第二时长确定的。也就是说,第一时长和第二时长具有关联关系。这样,网络设备为终端设备配置一个时长后,终端设备就可以根据该配置的时长来确定另一个时长,从而进一步降低信令开销。
在一种可能的设计中,第一时长和第二时长正相关。通常,终端设备在一段时间未收到调度时,接下来一段时间很可能也收不到调度,此外,终端设备未收到调度的时间越长,接下来收不到调度的时间可能也相应地越长。因此,第一时长与第二时长正相关时,可以在降低终端设备功耗的同时,避免丢失调度信息。
在一种可能的设计中,第一时长与第二时长成正比。这样,可以方便配置第一时长与第二时长之间的关联关系。
在一种可能的设计中,终端设备还被配置第三搜索空间组,其中,该第三搜索空间组包括至少一个搜索空间,且第一搜索空间组与第三搜索空间组不同。具体地,第一搜索空间组与第三搜索空间组的交集可以是空集,也可以是非空集。终端设备根据第三搜索空间组监测PDCCH时,若终端设备经过第三时长没有监测到PDCCH,终端设备切换到根据第二搜索空间组监测PDCCH。同理,终端设备经过一段时间没有监测到PDCCH时,会自动切换到根据空搜索空间组监测PDCCH,从而可以在降低终端设备功耗的同时降低信令开销。
在一种可能的设计中,终端设备由根据第三搜索空间组切换到根据第二搜索空间组监测PDCCH时,终端设备根据第二搜索空间组监测PDCCH经过第四时长后,终端设备根据第三搜索空间组监测PDCCH。也就是说,终端设备停止监测PDCCH经过第四时长后,会切出该空搜索空间组继续监测PDCCH。
在一种可能的设计中,第三时长是网络设备配置的,第四时长是根据第三时长确定的;或者第四时长是网络设备配置的,第三时长是根据第四时长确定的。
在一种可能的设计中,第三时长和第四时长正相关。
在一种可能的设计中,第三时长与第四时长成正比。
在一种可能的设计中,终端设备根据第一搜索空间组或第三搜索空间组监测PDCCH时,若终端设备接收到下行控制信息DCI且该DCI包括的第一指示信息为第一取值,终端设备根据第一搜索空间组监测PDCCH;若终端设备接收到DCI且该DCI包括的第一指示信息为第二取值,终端设备根据第三搜索空间组监测PDCCH。这样,终端设备可以实现在两个非空的搜索空间组之间切换。
在又一个可能的设计中,其特征在于,终端设备根据第一搜索空间组监测PDCCH时,若终端设备接收到DCI且该DCI包括的第一指示信息为第一取值,终端设备根据第一搜索空间组监测PDCCH;若终端设备接收到DCI且该DCI包括的第一指示信息为第二取值,终端设备根据第三搜索空间组监测PDCCH。终端设备根据第三搜索空间组监测PDCCH时,若终端设备接收到DCI且该DCI包括的第一指示信息为第一取值,终端设备根据第三搜索空间组监测PDCCH;若终端设备接收到DCI且该DCI包括的第一指示信息为第二取值, 终端设备根据第一搜索空间组监测PDCCH。这样,终端设备可以实现在两个非空的搜索空间组之间切换。
在一个可能的设计中,终端设备根据该第二搜索空间组监测PDCCH时,终端设备发送上行调度请求SR或随机接入信道RACH后,终端设备根据第一搜索空间组监测PDCCH。也就是说,终端设备停止监测PDCCH时,当发送SR或RACH后,会切换出空搜索空间继续监测PDCCH。这样,在终端设备有数据传输需求时可以快速开始监测PDCCH,从而降低数据传输时延。
在一个可能的设计中,终端设备接收网络设备发送的高层配置信令,该高层配置信令指示第一搜索空间组与第一时长对应。
在一个可能的设计中,该高层配置信令指示第一搜索空间组的标识与所述第一时长对应。
在一个可能的设计中,终端设备接收网络设备配置的第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,第一搜索空间组属于该m个搜索空间组,第二搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,终端设备被配置第一搜索空间,该第一搜索空间与第一搜索空间组关联,该第一搜索空间组对应第一索引;若该第一索引大于第二索引,则终端设备确定被配置所述第二搜索空间组,该第二搜索空间组对应第二索引。
在一个可能的设计中,若该第一索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第二方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:网络设备为终端设备配置第一搜索空间组,其中,该第一搜索空间组包括至少一个搜索空间;网络设备为终端设备配置第一预设时长,该第一预设时长为第一时长或用于确定第一时长,其中,第一时长为终端设备停止监测PDCCH前,终端设备根据第一搜索空间组没有监测到PDCCH的最大时长。
通过上述方法,网络设备一段时间没有发送PDCCH时,网络设备确定终端设备停止监测PDCCH。可以在降低终端设备功耗的同时,降低信令开销。
在一个可能的设计中,网络设备确定终端设备根据第一搜索空间组监测PDCCH时,若网络设备经过第一时长没有发送PDCCH,网络设备确定终端设备停止监测PDCCH,并停止发送PDCCH。
在一个可能的设计中,网络设备还为终端设备配置第二搜索空间组,其中,该第二搜索空间组不包括任何搜索空间。第一时长为终端设备停止监测PDCCH前,终端设备根据第一搜索空间组没有监测到PDCCH的最大时长,包括:第一时长为终端设备根据第二搜索空 间组监测PDCCH前,终端设备根据第一搜索空间组没有监测到PDCCH的最大时长。这样,网络设备一段时间没有发送PDCCH时,确定终端设备切换到根据空搜索空间组监测PDCCH,从而实现停止监测PDCCH,从而降低终端设备功耗。
在一个可能的设计中,第一预设时长为第一时长,第二时长是根据第一时长确定的;或第一预设时长用于确定第一时长,第一预设时长为第二时长。其中,该第二时长为终端设备根据第一搜索空间组经过第一时长没有监测到PDCCH后,终端设备根据第二搜索空间组监测PDCCH的最大时长。也就是说,终端设备停止监测PDCCH经过第二时长后,网络设备会继续发送PDCCH。本实现方式中,第一时长和第二时长具有关联关系。这样,网络设备为终端设备配置一个时长后,终端设备就可以根据该配置的时长来确定另一个时长,从而进一步降低信令开销。
在一个可能的设计中,第一时长和第二时长正相关。
在一个可能的设计中,第一时长是第二时长成正比。
在一个可能的设计中,网络设备还为终端设备配置第三搜索空间组,其中,该第三搜索空间组包括至少一个搜索空间,第一搜索空间组与第三搜索空间组不同。网络设备为终端设备配置第二预设时长,第二预设时长为第三时长或用于确定第三时长,其中,第三时长为终端设备停止监测PDCCH前,终端设备根据第三搜索空间组没有监测到PDCCH的最大时长。同理,当网络设备一段时间没有发送PDCCH时,可以使终端设备停止监测PDCCH,从而可以在降低终端设备功耗的同时降低信令开销。
在一个可能的设计中,网络设备确定终端设备根据第三搜索空间组监测PDCCH时,若网络设备经过第三时长没有发送PDCCH,网络设备确定终端设备根据第二搜索空间组监测PDCCH,并停止发送PDCCH。
在一个可能的设计中,第三时长为终端设备停止监测PDCCH前,终端设备根据第三搜索空间组没有监测到PDCCH的最大时长,包括:第三时长为终端设备根据第二搜索空间组监测PDCCH前,终端设备根据第三搜索空间组没有监测到PDCCH的最大时长。
在一个可能的设计中,第二预设时长为第三时长,第四时长是根据第三时长确定的;或第二预设时长用于确定第三时长,第二预设时长为第四时长。其中,该第四时长为终端设备根据第三搜索空间组经过第三时长没有监测到PDCCH后,终端设备根据第二搜索空间组监测PDCCH的最大时长。也就是说,终端设备停止监测PDCCH经过第四时长后,网络设备会继续发送PDCCH。本实现方式中,第三时长和第四时长具有关联关系。这样,网络设备为终端设备配置一个时长后,终端设备就可以根据该配置的时长来确定另一个时长,从而进一步降低信令开销。
在一个可能的设计中,第三时长和第四时长正相关。
在一个可能的设计中,第三时长是第四时长成正比。
在一个可能的设计中,网络设备确定终端设备根据第一搜索空间组或第三搜索空间组监测PDCCH时,网络设备向终端设备发送下行控制信息DCI,若该DCI包括的第一指示信息为第一取值,该第一指示信息指示终端设备根据第一搜索空间组监测PDCCH;若该DCI包括的第一指示信息为第二取值,该第一指示信息指示终端设备根据第三搜索空间组监测PDCCH。这样,当终端设备根据非空的搜索空间组监测PDCCH时,网络设备可以通过发送DCI指示终端设备在哪个非空的搜索空间组继续监测PDCCH。
在又一个可能的设计中,网络设备确定终端设备根据第一搜索空间组监测PDCCH时,网络设备向终端设备发送DCI,若该DCI包括的第一指示信息为第一取值,该第一指示信息指示终端设备根据第一搜索空间组监测PDCCH;若该DCI包括的第一指示信息为第二取值,该第一指示信息指示终端设备根据第三搜索空间组监测PDCCH。网络设备确定终端设备根据第三搜索空间组监测PDCCH时,网络设备向终端设备发送DCI,若该DCI包括的第一指示信息为第一取值,该第一指示信息指示终端设备根据第三搜索空间组监测PDCCH;若该DCI包括的第一指示信息为第二取值,该第一指示信息指示终端设备根据第一搜索空间组监测PDCCH。这样,当终端设备根据非空的搜索空间组监测PDCCH时,网络设备可以通过DCI指示终端设备是否切换到新的非空的搜索空间组监测PDCCH。
在一个可能的设计中,网络设备确定终端设备根据第二搜索空间组监测PDCCH时,该网络设备接收到终端设备发送的上行调度请求SR或随机接入信道RACH后,网络设备根据第一搜索空间组发送PDCCH。也就是说,网络设备确定终端设备停止监测PDCCH时,当网络设备接收到SR或RACH后,网络设备会开始发送PDCCH。这样,在终端设备有数据传输需求时,网络设备可以快速开始发送PDCCH,从而降低数据传输时延。
在一个可能的设计中,网络设备向终端设备发送高层配置信令,该高层配置信令指示第一搜索空间组与第一时长对应。
在一个可能的设计中,该高层配置信令指示第一搜索空间组的标识与第一时长对应。
在一个可能的设计中,网络设备为终端设备配置第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,第一搜索空间组属于该m个搜索空间组,第二搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,网络设备为终端设备配置第一搜索空间,该第一搜索空间与第一搜索空间组关联,该第一搜索空间组对应第一索引;若该第一索引大于第二索引,则网络设备确定终端设备被配置第二搜索空间组,该第二搜索空间组对应第二索引。
在一个可能的设计中,若该第一索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第三方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:
终端设备被配置第一搜索空间组、第二搜索空间组和第三搜索空间组,其中,第一搜索空间组和第二搜索空间组均包括至少一个搜索空间,第三搜索空间组不包括任何搜索空间;若终端设备由根据第一搜索空间组监测PDCCH切换为根据第三搜索空间组监测PDCCH,终端设备在第一时长内根据第三搜索空间组监测PDCCH;若终端设备由根据第二搜索空间组监测PDCCH切换为根据第三搜索空间组监测PDCCH,终端设备在第二时长内根据第三搜索空间组监测PDCCH。
通过上述方法,通过使用空搜索空间组,终端设备可以实现停止监测一段时间PDCCH,从而减少终端设备需要监测PDCCH的时机,有利于降低终端设备的功耗。
在一个可能的设计中,第一时长与第二时长相同或不同。
在一个可能的设计中,终端设备在第一时长内根据第三搜索空间组监测PDCCH后,终端设备根据第一搜索空间组监测PDCCH;终端设备在第二时长内根据第三搜索空间组监测PDCCH后,终端设备根据第二搜索空间组监测PDCCH。这样,终端设备可以切换回根据原来的搜索空间组监测PDCCH。
在一个可能的设计中,终端设备在第一时长内根据第三搜索空间组监测PDCCH后,终端设备根据默认搜索空间组监测PDCCH;终端设备在第二时长内根据第三搜索空间组监测PDCCH后,终端设备根据该默认空间组监测PDCCH,其中,该默认搜索空间组为第一搜索空间组或第二搜索空间组。
其中,该第一时长与第一搜索空间组对应,该第二时长与第二搜索空间组对应。这样,跳过时长可以与终端设备当前使用的搜索空间组相匹配。
在一个可能的设计中,第一搜索空间组包括的搜索空间的监测周期小于第二搜索空间组包括的搜索空间组的监测周期时,第一时长小于第二时长。这样,跳过时长与终端设备当前使用的搜索空间组可以更加匹配,进一步降低终端设备的功耗。
在一个可能的设计中,第一搜索空间组的配置信息包括第一参数,第一参数指示所述第一时长,第二搜索空间组的配置信息包括第二参数,第二参数指示所述第二时长。
在又一个可能的设计中,第三搜索空间组的配置信息包括第一参数,第一参数指示第一时长与第一搜索空间组关联,和/或,第一参数指示第二时长与第二搜索空间关联。
在一个可能的设计中,终端设备接收网络设备配置的第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,第一搜索空间组和第二搜索空间组属于该m个搜索空间组,第三搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,终端设备被配置第一搜索空间,该第一搜索空间与第一搜索空间组关联,该第一搜索空间组对应第一索引;若该第一索引大于第二索引,则终端设备确定被配置所述第三搜索空间组,该第三搜索空间组对应第二索引。
在一个可能的设计中,若该第一索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第四方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:网络设备为终端设备配置第一搜索空间组、第二搜索空间组和第三搜索空间组,其中,第一搜索空间组和第二搜索空间组均包括至少一个搜索空间,第三搜索空间组不包括任何搜索空间;网络设备还为终端设备配置第一时长和第二时长,所述第一时长用于指示所述终端设备由根据第 一搜索空间组监测PDCCH切换为根据第三搜索空间组监测PDCCH时,所述终端设备根据第三搜索空间组监测PDCCH的时长;所述第二时长用于指示所述终端设备由根据第二搜索空间组监测PDCCH切换为根据第三搜索空间组监测PDCCH时,所述终端设备根据第三搜索空间组监测PDCCH的时长。
在一个可能的设计中,若网络设备确定终端设备由根据第一搜索空间组监测PDCCH切换为根据第三搜索空间组监测PDCCH,网络设备在第一时长内不发送PDCCH;若网络设备确定终端设备由根据第二搜索空间组监测PDCCH切换为根据第三搜索空间组监测PDCCH,网络设备在第二时长内不发送PDCCH。
通过上述方法,可以使终端设备停止监测一段时间PDCCH,从而降低终端设备的功耗。
在一个可能的设计中,第一时长与第二时长相同或不同。
在一个可能的设计中,网络设备在第一时长内不发送PDCCH后,网络设备确定终端设备根据第一搜索空间组监测PDCCH;网络设备在第二时长内不发送PDCCH后,网络设备确定终端设备根据第二搜索空间组监测PDCCH。这样,网络设备可以确定终端设备切换回根据原来的搜索空间组监测PDCCH。
在一个可能的设计中,网络设备在第一时长不发送PDCCH后,网络设备确定终端设备根据默认搜索空间组监测PDCCH;网络设备在第二时长内不发送PDCCH后,网络设备确定终端设备根据该默认空间组监测PDCCH,其中,该默认搜索空间组为第一搜索空间组或第二搜索空间组。
其中,该第一时长与第一搜索空间组对应,该第二时长与第二搜索空间组对应。这样,可以使跳过时长与终端设备当前使用的搜索空间组相匹配。
在一个可能的设计中,第一搜索空间组包括的搜索空间的监测周期小于第二搜索空间组包括的搜索空间组的监测周期时,第一时长小于第二时长。这样,跳过时长与终端设备当前使用的搜索空间组可以更加匹配,进一步降低终端设备的功耗。
在一个可能的设计中,第一搜索空间组的配置信息包括第一参数,第一参数指示所述第一时长,第二搜索空间组的配置信息包括第二参数,第二参数指示所述第二时长。
在又一个可能的设计中,第三搜索空间组的配置信息包括第一参数,第一参数指示第一时长与第一搜索空间组关联,和/或,第一参数指示第二时长与第二搜索空间关联。
在一个可能的设计中,网络设备为终端设备配置第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,第一搜索空间组和第二搜索空间组属于该m个搜索空间组,第三搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,网络设备为终端设备配置第一搜索空间,该第一搜索空间与第一搜索空间组关联,该第一搜索空间组对应第一索引;若该第一索引大于第二索引,则网络设备确定终端设备被配置第三搜索空间组,该第三搜索空间组对应第二索引。
在一个可能的设计中,若该第一索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第五方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:终端设备被配置第一搜索空间组,其中,第一搜索空间组不包括任何搜索空间。终端设备接收第一下行控制信息DCI,若该第一DCI包括第一指示信息,该终端设备在第一时长内根据第一搜索空间组监测PDCCH;若该第一DCI包括第二指示信息,该终端设备在第二时长内根据第一搜索空间组监测PDCCH。
通过上述方法,终端设备可以跳过一段时间的PDCCH监测,从而降低终端设备的功耗。
在一种可能的设计中,第一时长和第二时长相同或不同。第一时长和第二时长不同时,可以为一个空搜索空间组配置不同的时长,从而实现终端设备跳过不同时长的PDCCH监测。跳过时长可以匹配终端设备当前正在使用的搜索空间组,进而降低终端设备的功耗。
在一个可能的设计中,终端设备还被配置第二搜索空间组,其中,第二搜索空间组包括至少一个搜索空间。终端设备接收DCI,若该DCI包括第三指示信息,该终端设备根据第二搜索空间组监测PDCCH。
在一个可能的设计中,第一指示信息指示N个状态值中的第一状态值,第二指示信息指示该N个状态值中的第二状态值,第三指示信息指示该N个状态值中的第三状态值。
在一个可能的设计中,终端设备还被配置第三搜索空间组,该第三搜索空间组至少包括一个搜索空间,第二搜索空间组与第三搜索空间组不同。若该DCI包括第四指示信息,终端设备根据该第三搜索空间组监测PDCCH。该第四指示信息可以指示该N个状态值中的第四状态值。这样,终端设备可以被配置不同的搜索空间组,并通过状态值指示实现在不同的搜索空间组之间切换。
在一个可能的设计中,终端设备在第一时长内根据第一搜索空间组监测PDCCH后,终端设备根据第二搜索空间组或第三搜索空间组监测PDCCH;或者,终端设备在第二时长内根据第一搜索空间组监测PDCCH后,终端设备根据第二搜索空间组或第三搜索空间组监测PDCCH。
在一个可能的设计中,终端设备接收网络设备发送的高层配置信令,该高层配置信令配置以下一项或多项:第一指示信息指示终端设备在第一时长内根据第一搜索空间组监测PDCCH、第二指示信息指示终端设备在第二时长内根据第一搜索空间组监测PDCCH、第三指示信息指示终端设备根据第二搜索空间组监测PDCCH、或第四指示信息指示终端设备根据第三搜索空间组监测PDCCH。
在一个可能的设计中,终端设备接收网络设备发送的高层配置信令,该高层配置信令配置以下一项或多项:第一状态值指示终端设备在第一时长内根据第一搜索空间组监测PDCCH、第二状态值指示终端设备在第二时长内根据第一搜索空间组监测PDCCH、第三状态值指示终端设备根据第二搜索空间组监测PDCCH、或第四状态值指示终端设备根据第三搜索空间组监测PDCCH。
在一个可能的设计中,终端设备接收网络设备配置的第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组, 包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,第二搜索空间组和第三搜索空间组属于该m个搜索空间组,第一搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,终端设备被配置第一搜索空间,该第一搜索空间与第二搜索空间组关联,该第二搜索空间组对应第二索引;若该第二索引大于第三索引,则终端设备确定被配置所述第三搜索空间组,该第三搜索空间组对应第三索引。
在一个可能的设计中,若该第二索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第六方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:网络设备为终端设备配置第一搜索空间组,其中,第一搜索空间组不包括任何搜索空间。网络设备向终端设备发送下行控制信息DCI,若该DCI包括第一指示信息,该第一指示信息指示终端设备在第一时长内根据第一搜索空间组监测PDCCH;若该DCI包括第二指示信息,该第二指示信息指示终端设备在第二时长内根据第一搜索空间组监测PDCCH。
通过上述方法,网络设备可以通过发送DCI,指示终端设备跳过一段时间的PDCCH监测,从而降低终端设备功耗。
在一种可能的设计中,第一时长和第二时长相同或不同。第一时长和第二时长不同时,网络设备可以为一个空搜索空间组配置不同的时长,从而实现终端设备跳过不同时长的PDCCH监测。跳过时长可以匹配终端设备当前正在使用的搜索空间组,进而降低终端设备的功耗。
在一个可能的设计中,网络设备还为终端设备配置第二搜索空间组,其中,第二搜索空间组包括至少一个搜索空间。网络设备向终端设备发送DCI,若该DCI包括第三指示信息,该第三指示信息指示终端设备根据第二搜索空间组监测PDCCH。
在一个可能的设计中,第一指示信息指示N个状态值中的第一状态值,第二指示信息指示该N个状态值中的第二状态值,第三指示信息指示该N个状态值中的第三状态值。
在一个可能的设计中,网络设备还配置第三搜索空间组,该第三搜索空间组至少包括一个搜索空间,第二搜索空间组与第三搜索空间组不同;若该DCI包括第四指示信息,第四指示信息指示终端设备根据该第三搜索空间组监测PDCCH。该第四指示信息可以指示该N个状态值中的第四状态值。这样,网络设备可以为终端设备配置不同的搜索空间组,并通过状态值指示确定终端设备在不同的搜索空间组之间切换。
在一个可能的设计中,网络设备向终端设备发送发送高层配置信令,该高层配置信令配置以下一项或多项:第一指示信息指示终端设备在第一时长内根据第一搜索空间组监测PDCCH、第二指示信息指示终端设备在第二时长内根据第一搜索空间组监测PDCCH、第三指示信息指示终端设备根据第二搜索空间组监测PDCCH、或第四指示信息指示终端设备根据第三搜索空间组监测PDCCH。
在一个可能的设计中,网络设备向终端设备发送发送高层配置信令,该高层配置信令 配置以下一项或多项:第一状态值指示终端设备在第一时长内根据第一搜索空间组监测PDCCH、第二状态值指示终端设备在第二时长内根据第一搜索空间组监测PDCCH、第三状态值指示终端设备根据第二搜索空间组监测PDCCH、或第四状态值指示终端设备根据第三搜索空间组监测PDCCH。
在一个可能的设计中,网络设备为终端设备配置第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,其中,第二搜索空间组和第三搜索空间组属于该m个搜索空间组,第一搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,网络设备为终端设备配置第一搜索空间,该第一搜索空间与第二搜索空间组关联,该第二搜索空间组对应第二索引;若该第二索引大于第三索引,则终端设备确定被配置所述第三搜索空间组,该第三搜索空间组对应第三索引。
在一个可能的设计中,若该第一索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第七方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:终端设备被配置第一搜索空间组和第二搜索空间组,其中,第一搜索空间组和第二搜索空间组均不包括任何搜索空间;终端设备接收第一下行控制信息DCI,若该第一DCI包括第一指示信息,终端设备在第一时长内根据第一搜索空间组监测PDCCH;若该第一DCI包括第二指示信息,终端设备在第二时长内根据第二搜索空间组监测PDCCH。
通过上述方法,终端设备可以跳过一段时间的PDCCH监测,从而降低终端设备的功耗。
在一个可能的设计中,第一时长与第二时长相同或不同。这样,第一时长与第二时长不同时,可以为不同的空搜索空间组配置不同的时长,从而实现终端设备跳过不同时长的PDCCH监测。跳过时长可以匹配终端设备当前正在使用的搜索空间组,进而降低终端设备的功耗。
在一个可能的设计中,终端设备还被配置第三搜索空间组,第三搜索空间组包括至少一个搜索空间。终端设备在第一时长内根据第一搜索空间组监测PDCCH后,终端设备根据该第三搜索空间组监测PDCCH;或者,终端设备在第二时长内根据第二搜索空间组监测PDCCH后,终端设备根据该第三搜索空间组监测PDCCH。
在一个可能的设计中,该第一时长与第一搜索空间组对应,该第二时长与第二搜索空间组对应。这样,不同的空搜索空间组可以对应不同的跳过时长。
在一个可能的设计中,第一搜索空间组的配置信息包括第一参数,该第一参数指示第一时长,第二搜索空间组的配置信息包括第二参数,该第二参数指示第二时长。
在又一个可能的设计中,终端设备接收网络设备发送的高层配置信令,该高层配置信 令配置第一搜索空间对应的第一时长,和/或,该高层配置信令配置第二搜索空间对应的第二时长。
在一个可能的设计中,终端设备接收网络设备配置的第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,第三搜索空间组属于该m个搜索空间组,第一搜索空间组和第二搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,终端设备被配置第一搜索空间,该第一搜索空间与第三搜索空间组关联,该第三搜索空间组对应第三索引;若该第三索引大于第二索引,则终端设备确定被配置所述第二搜索空间组,该第二搜索空间组对应第二索引。
在一个可能的设计中,若该第三索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第八方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:网络设备配置第一搜索空间组和第二搜索空间组,其中,第一搜索空间组和第二搜索空间组均不包括任何搜索空间;网络设备向终端设备发送下行控制信息DCI,若该DCI包括第一指示信息,该第一指示信息指示终端设备在第一时长内根据第一搜索空间组监测PDCCH;若该DCI包括第二指示信息,该第二指示信息指示终端设备在第二时长内根据第二搜索空间组监测PDCCH。
通过上述方法,网络设备可以通过发送DCI来指示终端设备跳过一段时间的PDCCH监测,从而降低终端设备功耗。
在一个可能的设计中,第一时长与第二时长相同或不同。这样,网络设备可以为不同的空搜索空间组配置不同的时长,从而使终端设备可以跳过不同时长的PDCCH监测。跳过时长可以匹配终端设备当前正在使用的搜索空间组,进而降低终端设备的功耗。
在一个可能的设计中,该第一时长与第一搜索空间组对应,该第二时长与第二搜索空间组对应。这样,不同的空搜索空间组可以对应不同的跳过时长。
在一个可能的设计中,第一搜索空间组的配置信息包括第一参数,该第一参数指示第一时长,第二搜索空间组的配置信息包括第二参数,该第二参数指示第二时长。
在又一个可能的设计中,网络设备向终端设备发送高层配置信令,该高层配置信令配置第一搜索空间对应的第一时长,和/或,该高层配置信令配置第二搜索空间对应的第二时长。
在一个可能的设计中,网络设备为终端设备配置第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示网络设备为终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或 该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;其中,第三搜索空间组属于该m个搜索空间组,第一搜索空间组和第二搜索空间组属于该(n-m)个搜索空间组。
在一个可能的设计中,网络设备为终端设备配置第一搜索空间,该第一搜索空间与第三搜索空间组关联,该第三搜索空间组对应第三索引;若该第三索引大于第二索引,则终端设备确定被配置所述第二搜索空间组,该第二搜索空间组对应第二索引。
在一个可能的设计中,若该第三索引小于第四索引,且终端设备被配置的所有搜索空间均未与第四搜索空间组关联,终端设备确定未被配置第四搜索空间组,其中,第四搜索空间组对应第四索引。
第九方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:终端设备被配置第一搜索空间组,其中,该第一搜索空间组至少包括一个搜索空间;终端设备停止监测PDCCH时,该终端设备发送上行调度请求SR或随机接入信道RACH后,终端设备根据该第一搜索空间组监测PDCCH。
通过上述方法,在终端设备有数据传输需求时可以快速开始监测PDCCH,从而降低数据传输时延。
在一个可能的设计中,终端设备还被配置第二搜索空间组,其中,该第二搜索空间组不包括任何搜索空间;终端设备停止监测PDCCH,具体包括:终端设备根据该第二搜索空间组监测PDCCH。
第十方面,本申请提供了一种PDCCH监测的方法,该方法可以包括:网络设备确定终端设备停止监测PDCCH时,网络设备接收到终端设备发送的上行调度请求SR或随机接入信道RACH后,网络设备根据第一搜索空间组向终端设备发送PDCCH,其中,该第一搜索空间组至少包括一个搜索空间。
通过上述方法,网络设备确定终端设备停止监测PDCCH时,当网络设备接收到SR或RACH后,网络设备会开始发送PDCCH。这样,在终端设备有数据传输需求时,网络设备可以快速开始发送PDCCH,从而降低数据传输时延。
在一个可能的设计中,网络设备确定终端设备停止监测PDCCH,具体包括:网络设备确定终端设备根据第二搜索空间组监测PDCCH;其中,该第二搜索空间组不包括任何搜索空间。
第十一方面,本申请还提供了一种配置搜索空间组的方法,该方法可以包括:终端设备被配置第一搜索空间组对应的第一索引,其中,该第一搜索空间组不包括任何搜索空间。
第十二方面,本申请还提供了一种配置搜索空间组的方法,该方法可以包括:网络设备为终端设备配置第一搜索空间组对应的第一索引,其中,该第一搜索空间组不包括任何搜索空间。
第十三方面,本申请还提供了一种配置搜索空间组的方法,该方法可以包括:终端设备接收网络设备配置的第一信息,该第一信息指示网络设备为终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示所述网络设备为所述终端设备配置了n个搜索 空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,该n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间。
第十四方面,本申请还提供了一种配置搜索空间组的方法,该方法可以包括:网络设备为终端设备配置第一信息,该第一信息指示所述网络设备为所述终端设备配置了n个搜索空间组。
在一个可能的设计中,该第一信息指示所述网络设备为所述终端设备配置了n个搜索空间组,包括以下一项或多项:该第一信息包括网络设备为终端设备配置的搜索空间组的个数n;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或该第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。
在一个可能的设计中,该n个搜索空间组中的m个搜索空间组具有关联的搜索空间,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间。
第十五方面,本申请还提供了一种配置搜索空间组的方法,该方法可以包括:终端设备被配置第一搜索空间,该第一搜索空间与第一搜索空间组关联,该第一搜索空间组对应第一索引;若该第一索引大于第二索引,则终端设备确定被配置第二搜索空间组,该第二搜索空间组对应第二索引。
在一个可能的设计中,若终端设备被配置的所有搜索空间均未与第二搜索空间组关联,该第二搜索空间组不包括任何搜索空间。
在一个可能的设计中,若该第一索引小于第三索引,且终端设备被配置的所有搜索空间均未与第三搜索空间组关联,终端设备确定未被配置第三搜索空间组,其中,第三搜索空间组对应所述第三索引。
第十六方面,本申请还提供了一种配置搜索空间组的方法,该方法可以包括:网络设备为终端设备配置第一搜索空间,该第一搜索空间与第一搜索空间组关联,该第一搜索空间组对应第一索引;若该第一索引大于第二索引,则网络设备确定终端设备被配置第二搜索空间组,该第二搜索空间组对应所述第二索引。
在一个可能的设计中,若终端设备被配置的所有搜索空间均未与第二搜索空间组关联,该第二搜索空间组不包括任何搜索空间。
在一个可能的设计中,若该第一索引小于第三索引,且终端设备被配置的所有搜索空间均未与第三搜索空间组关联,终端设备确定未被配置第三搜索空间组,其中,第三搜索空间组对应所述第三索引。
第十七方面,本申请还提供了一种通信装置,所述通信装置可以是终端设备,该通信装置具有实现上述第一方面、第三方面、第五方面、第七方面、第九方面、第十一方面、第十三方面、或第十五方面中任一方面的终端设备的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中,所述通信装置的结构中包括收发单元和处理单元,这些单元可以执行上述第一方面、第三方面、第五方面、第七方面、第九方面、第十一方面、第十三 方面、或第十五方面中任一方面的终端设备的相应功能,具体参见方法示例中的详细描述,此处不做赘述。
在一个可能的设计中,所述通信装置的结构中包括收发器和处理器,可选的还包括存储器,所述收发器用于收发数据,以及用于与通信系统中的其他设备进行通信交互,所述处理器被配置为支持所述通信装置执行上述第一方面、第三方面、第五方面、第七方面、第九方面、第十一方面、第十三方面、或第十五方面中任一方面的终端设备的相应的功能。所述存储器与所述处理器耦合,其保存所述通信装置必要的程序指令和数据。
第十八方面,本申请还提供了一种通信装置,所述通信装置可以是网络设备,该通信装置具有实现上述第二方面、第四方面、第六方面、第八方面、第十方面、第十二方面、第十四方面、或第十六方面中任一方面的网络设备的功能。所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
在一个可能的设计中,所述通信装置的结构中包括收发单元和处理单元,这些单元可以执行上述第二方面、第四方面、第六方面、第八方面、第十方面、第十二方面、第十四方面、或第十六方面中任一方面的网络设备的相应功能,具体参见方法示例中的详细描述,此处不做赘述。
在一个可能的设计中,所述通信装置的结构中包括收发器和处理器,可选的还包括存储器,所述收发器用于收发数据,以及用于与通信系统中的其他设备进行通信交互,所述处理器被配置为支持所述通信装置执行上述第二方面、第四方面、第六方面、第八方面、第十方面、第十二方面、第十四方面、或第十六方面中任一方面的网络设备的相应的功能。所述存储器与所述处理器耦合,其保存所述通信装置必要的程序指令和数据。
第十九方面,本申请实施例提供了一种通信系统,可以包括上述提及的终端设备和网络设备。
第二十方面,本申请实施例提供的一种计算机可读存储介质,该计算机可读存储介质存储有程序指令,当程序指令在计算机上运行时,使得计算机执行上述第一方面至第十六方面中任一方面及其任一可能的设计中的方法。示例性的,计算机可读存储介质可以是计算机能够存取的任何可用介质。以此为例但不限于:计算机可读介质可以包括非瞬态计算机可读介质、随机存取存储器(random-access memory,RAM)、只读存储器(read-only memory,ROM)、电可擦除可编程只读存储器(electrically EPROM,EEPROM)、CD-ROM或其他光盘存储、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质。
第二十一方面,本申请实施例提供一种包括计算机程序代码或指令的计算机程序产品,当其在计算机上运行时,使得计算机实现上述第一方面至第十六方面中任一方面及其任一可能的设计中的方法。
第二十二方面,本申请还提供了一种芯片,包括处理器,所述处理器与存储器耦合,用于读取并执行所述存储器中存储的程序指令,以使所述芯片实现上述第一方面至第十六方面中任一方面及其任一可能的设计中的方法。
上述第十七方面至第二十二方面中的各个方面以及各个方面可能达到的技术效果请参照上述针对第一方面至第十六方面中的各种可能方案可以达到的技术效果说明,这里不再 重复赘述。
附图说明
图1为本申请提供的一种通信系统的架构示意图;
图2为本申请提供的一种监测PDCCH的示意图;
图3为本申请提供的另一种监测PDCCH的示意图;
图4为本申请提供的另一种监测PDCCH的示意图;
图5为本申请提供的另一种监测PDCCH的示意图;
图6为本申请提供的另一种监测PDCCH的示意图;
图7为本申请提供的另一种监测PDCCH的示意图;
图8为本申请提供的另一种监测PDCCH的示意图;
图9为本申请提供的一种搜索空间切换的的示意图;
图10为本申请提供的另一种搜索空间切换的示意图;
图11为本申请提供的一种通信装置的结构图;
图12为本申请提供的一种通信装置的结构图。
具体实施方式
下面将结合附图对本申请作进一步地详细描述。
本申请实施例提供一种PDCCH监测的方法及装置,用以明确终端设备如何监测PDCCH。其中,本申请所述方法和装置基于同一技术构思,由于方法及装置解决问题的原理相似,因此装置与方法的实施可以相互参见,重复之处不再赘述。
在本申请的描述中,“第一”、“第二”等词汇,仅用于区分描述的目的,而不能理解为指示或暗示相对重要性,也不能理解为指示或暗示顺序。
在本申请中的描述中,“至少一个(种)”是指一个(种)或者多个(种),多个(种)是指两个(种)或者两个(种)以上。
为了更加清晰地描述本申请实施例的技术方案,下面结合附图,对本申请实施例提供的PDCCH监测方法及装置进行详细说明。
图1示出了本申请实施例涉及的通信系统的架构,所述通信系统的架构中包括网络设备110和终端设备120,其中,终端设备120可以与网络设备110进行通信。
网络设备110可以为具有无线收发功能的设备或具有无线收发功能的设备的芯片,该网络设备包括但不限于:基站(generation node B,gNB)、无线网络控制器(radio network controller,RNC)、节点B(Node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved NodeB,或home Node B,HNB)、基带单元(baseband unit,BBU),无线保真(wireless fidelity,WIFI)系统中的接入点(access point,AP)、无线中继节点、无线回传节点、传输点(transmission and reception point,TRP或者transmission point,TP)等,还可以为构成gNB或传输点的网络节点,如基带单元(BBU),或,分布式单元(distributed unit,DU)等。
在一些部署中,gNB可以包括集中式单元(centralized unit,CU)和DU。gNB还可以包括射频单元(radio unit,RU)。CU实现gNB的部分功能,DU实现gNB的部分功能,比 如,CU实现无线资源控制(radio resource control,RRC),分组数据汇聚层协议(packet data convergence protocol,PDCP)层的功能,DU实现无线链路控制(radio link control,RLC)、媒体接入控制(media access control,MAC)和物理(physical,PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息,或者,由PHY层的信息转变而来,因而,在这种架构下,高层信令,如RRC层信令或PHCP层信令,也可以认为是由DU发送的,或者,由DU+RU发送的。可以理解的是,网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外,CU可以划分为接入网RAN中的网络设备,也可以将CU划分为核心网CN中的网络设备,对此不作限定。
终端设备120也可以称为用户设备(user equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)终端设备、增强现实(augmented reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智能穿戴设备(智能眼镜、智能手表、智能耳机等)、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。本申请中将具有无线收发功能的终端设备及可设置于前述终端设备的芯片统称为终端设备。
需要说明的是,图1所述的通信系统可以包括但不限于长期演进(long term evolution,LTE)系统、第五代移动通信(the 5th Generation,5G)系统、机器与机器通信(machine to machine,M2M)系统、侧行链路通信系统(Sidelink)或者未来演进的其它通信系统,如6G系统。其中,5G的无线空口技术称为新空口(new radio,NR),5G系统也可称为NR系统。
目前,在NR系统中,通常,终端设备无论是接收下行数据还是发送上行数据都需要网络设备的调度,网络设备可以通过物理下行控制信道PDCCH对终端设备进行调度。例如,PDCCH可以承载下行调度信息,以便终端设备接收物理下行共享信道(physical downlink shared channel,PDSCH),或者,PDCCH可以承载上行调度信息,以便终端设备发送物理上行共享信道(physical uplink shared channel,PUSCH)。其中,调度信息会指示PDSCH或PUSCH的传输参数,在这些传输参数中,包括PDSCH或PUSCH的时域资源位置。具体地,PDCCH中携带下行控制信息(downlink control information,DCI),网络设备通过DCI指示上述时域资源位置。其中,对于下行数据,网络设备会通过DCI中的时域资源分配(time domain resource allocation,TDRA)字段指示K0值,用于确定PDCCH和PDSCH之间的时隙间隔;对于上行数据,网络设备会通过DCI中的TDRA字段指示K2值,用于确定PDCCH和PUSCH之间的时隙间隔。相应地,在PDSCH的时域资源位置,网络设备以DCI中指示的配置参数发送对应的下行数据,终端设备则在对应位置以相应的参数接收;在PUSCH的时域资源位置,终端设备以DCI中指示的配置参数发送相应的上行数据,基站在对应的位置以相应的参数接收。
终端设备为了接收DCI,需要在下行控制区域盲检(blind detect,BD)网络设备发送给自己的PDCCH,即终端设备监测(monitor)许多PDCCH候选位置(PDCCH candidate), 从中找出是否有发送给自己的。终端设备需要盲检的一组候选位置组成一个搜索空间(search space set,也可以称为搜索空间集合),终端设备需要盲检的一个或多个搜索空间组成一个搜索空间组(search space set group,SSSG,也可以称为搜索空间集合组)。根据网络设备的配置,终端设备可能会周期性地监测一个(组)或多个(组)搜索空间,从中寻找是否有发送给自己的PDCCH。其中,终端设备需要监测PDCCH的时域位置,也可以称为PDCCH监测时机(PDCCH monitoring occasion)。
基于上述描述,终端设备会频繁地监测PDCCH。但是,若在一段时间内,终端设备并没有业务发生,即没有下行数据或上行数据需要传输时,终端设备即使监测PDCCH也无法接收到网络设备发送给自己的PDCCH,然而终端设备在这些时间仍会监测PDCCH,因此会造成终端设备的功耗浪费。
为了降低终端设备的功耗,一种可能的方案是:网络设备可以向终端设备发送一个指示信息,来指示终端设备跳过一段时间的PDCCH监测(PDCCH skipping),这段跳过的时间可以称为跳过时长(skipping duration)。如图2所示,终端设备在监测PDCCH时,收到一个指示信息,从而跳过4个时隙(slot),也即在这4个时隙中不监测PDCCH。降低终端设备功耗的另一种可能的方案是搜索空间组切换(search space set group switching,SSSG switching)。示例性地,网络设备可以向终端设备发送一个指示信息,指示终端设备在预先配置的两组搜索空间中切换。例如,如图3所示,终端设备被配置2组搜索空间,第一搜索空间组包括搜索空间1,搜索空间1对应的监测周期为1个时隙,第二搜索空间组包括搜索空间2,搜索空间2对应的监测周期为4个时隙。网络设备可以向终端设备发送一个指示信息,指示终端设备可以从监测第一搜索空间组切换为监测第二搜索空间组,从而减少PDCCH监测的次数,以节省终端设备的功耗,也即实现节能的目的。
上述两种方案,都能够减少终端设备的PDCCH监测次数。其中,第一种方案灵活多变,适用于小时间尺度的调度变化,即有无调度的变化比较频繁,而第二种方案则适用于更大时间尺度的调度变化。为了同时获得两种方案的好处,可以考虑同时支持上述两种功能。同时支持上述两种功能的一种可能的方式为:为终端设备配置一个空搜索空间组来达到跳过一段时间的PDCCH监测的效果。例如,网络设备可以向终端设备发送一个指示信息,指示终端设备切换到根据空搜索空间组监测PDCCH。其中,空搜索空间组不包括任何搜索空间,也就是说,终端设备使用空搜索空间组时不会监测PDCCH。此外,网络设备还可以给终端设备配置或指示一个时长,终端设备使用空搜索空间组经过该时长后,会自动从该空搜索空间组切换出来,之后正常监测非空搜索空间组,从而达到跳过一段时间的PDCCH监测(即在一段时间内不监测PDCCH)的技术效果。由于该使用空搜索空间组的时长的技术效果等同于PDCCH skipping方案中的跳过时长,为了方便表述,后文中对该使用空搜索空间组的时长也称为跳过时长。
需要注意的是,由于空搜索空间组不包括任何搜索空间,本申请所提及的终端设备根据空搜索空间组监测PDCCH,相当于终端设备不监测PDCCH、停止监测PDCCH、不做PDCCH盲检或不做PDCCH解码。相应地,终端设备在一段时间内根据空搜索空间组监测PDCCH,相当于终端设备在这一段时间内不监测PDCCH、停止监测PDCCH或不做PDCCH盲检。本申请以根据空搜索空间组监测PDCCH为例进行描述,其他一些实施例中,终端设备根据空搜索空间组监测PDCCH也可以替换为终端设备停止监测PDCCH。
然而,当使用空搜索空间来实现跳过一段时间的PDCCH监测时,可能会存在跳过时长与搜索空间组不匹配的问题。如图4所示,第一搜索空间组包括搜索空间1,搜索空间1对应的监测周期为1个时隙,第二搜索空间组包括搜索空间2,搜索空间2对应的监测周期为5个时隙,第三搜索空间组不包括任何搜索空间,即第三搜索空间组为空搜索空间组。假设使用第三搜索空间组的跳过时长为3个时隙,如图4中(a)所示,当终端设备根据第一搜索空间组(即搜索空间1)监测PDCCH时,收到网络设备的指示信息,终端设备切换到根据第三搜索空间组监测PDCCH,即跳过3个时隙。相比于一直使用第一搜索空间组,可以减少3个时隙的PDCCH监测,此时,第一搜索空间组与该空的第三搜索空间组配合使用比较合适。同样假设使用第三搜索空间组的跳过时长为3个时隙,如图4中(b)所示,当终端设备根据第二搜索空间组(即搜索空间2)监测PDCCH时,当收到网络设备的指示信息,终端设备切换到根据第三搜索空间组监测PDCCH,即跳过3个时隙,此时,由于跳过的时隙本身就没有PDCCH监测时机,相比于一直使用第二搜索空间组,并没有实际减少PDCCH监测。因此,此时使用空搜索空间组即跳过一段时间的PDCCH监测没有达到节能的目的。
基于此,本申请提出了一种PDCCH监测的方法,可以利用空搜索空间组来实现跳过一段时间的PDCCH监测,从而节省终端设备的功耗。
需要说明的是,在本申请实施例中可实现监测或者不监测PDCCH的可以是终端设备,或者是终端设备中的处理器,或者是芯片或芯片系统,或者是一个功能模块等;实现指示终端设备如何监测PDCCH的可以是网络设备,或者是网络设备中的处理器,或者是芯片或芯片系统,或者是一个功能模块等。在以下的实施例中,仅以终端设备和网络设备为例对本申请提供的PDCCH监测的方法进行详细说明,但对本申请并不作为限定。
基于以上描述,本申请实施例提供了一种PDCCH监测的方法,适用于图1所示的通信系统。该方法可以包括:终端设备被配置第一搜索空间组A1、第二搜索空间组A2和第三搜索空间组A3。其中,第一搜索空间组A1和第二搜索空间组A2为非空搜索空间组,即第一搜索空间组A1和第二搜索空间组A2均至少包括一个搜索空间,第三搜索空间组A3为空搜索空间组,即第三搜索空间组A3不包括任何搜索空间。此外,终端设备还被配置两个跳过时长,分别对应两个非空的搜索空间组。当终端设备从根据一个非空的搜索空间组监测PDCCH切换到根据空搜索空间组监测PDCCH时,经过该非空的搜索空间组对应的跳过时长后,切出该空搜索空间组。具体地,若终端设备由根据第一搜索空间组A1监测PDCCH切换为根据第三搜索空间组A3监测PDCCH,终端设备在第一时长内根据第三搜索空间组A3监测PDCCH;若终端设备由根据第二搜索空间组A2监测PDCCH切换为根据第三搜索空间组A3监测PDCCH,终端设备在第二时长内根据第三搜索空间组监测PDCCH。其中,第一时长与第二时长可以相同或不同。
相应地,网络设备为终端设备配置该至少第一搜索空间组A1、第二搜索空间组A2和第三搜索空间组A3。网络设备还为终端设备配置第一时长和第二时长。其中,该第一时长用于指示终端设备由根据第一搜索空间组A1监测PDCCH切换为根据第三搜索空间组A3监测PDCCH时,终端设备根据第三搜索空间组A3监测PDCCH的时长;该第二时长用于指示终端设备由根据第二搜索空间组A2监测PDCCH切换为根据第三搜索空间组A3监测PDCCH时,终端设备根据第三搜索空间组A3监测PDCCH的时长。可选地,若网络设备确定终端设备由根据第一搜索空间组A1监测PDCCH切换为根据第三搜索空间组A3监测 PDCCH,网络设备在第一时长内不发送PDCCH;若网络设备确定终端设备由根据第二搜索空间组A2监测PDCCH切换为根据第三搜索空间组A3监测PDCCH,网络设备在第二时长内不发送PDCCH。
需要注意的是,终端设备被配置的第一搜索空间组A1和第二搜索空间组A2均可以包括一个或多个搜索空间。可选地,第一搜索空间组A1与第二搜索空间组A2的交集可以为空集,也就是说第一搜索空间组A1与第二搜索空间组A2不包括相同的搜索空间。例如,第一搜索空间组A1包括搜索空间1和搜索空间2,第二搜索空间组A2包括搜索空间3、搜索空间4以及搜索空间5。可选地,第一搜索空间组A1与第二搜索空间组A2的交集也可以为非空集,即第一搜索空间组A1与第二搜索空间组A2中有相同的搜索空间。例如,第一搜索空间集合包括搜索空间1和搜索空间2,第二搜索空间集合包括搜索空间2、搜索空间3以及搜索空间4。
示例性地,网络设备为终端设备配置搜索空间组的方法可以是:网络设备通过配置搜索空间组的个数、或者配置搜索空间组的索引值(index)的范围来配置搜索空间组。一种可能的方式中,网络设备为终端设备配置空的搜索空间组的方式可以是,任何搜索空间的配置信息均不关联空搜索空间组的索引。另一种可能的方式中,网络设备直接配置空的搜索空间组对应的索引。值得注意的,网络设备为终端设备配置空搜索空间组的方式可以单独使用,并不限定为与前述实施例结合。
示例性地,网络设备为终端设备配置非空的第一搜索空间组A1和非空的第二搜索空间组A2,以及空的第三搜索空间组A3。
一个实施例中,如图5所示,第一搜索空间组A1与第二搜索空间组A2均只包括一个搜索空间。如图5中(a)所示,第一搜索空间组A1包括搜索空间1,搜索空间1对应的监测周期为2个时隙,如图5中(b)所示,第二搜索空间组A2包括搜索空间2,搜索空间2对应的监测周期为5个时隙。网络设备还配置第一搜索空间组A1对应的跳过时长为3个时隙,第二搜索空间组A2对应的跳过时长为9个时隙。如图5中(a)所示,终端设备根据第一搜索空间组A1即搜索空间1监测PDCCH时,在时隙1接收来自网络设备的指示信息,从而切换到根据第三搜索空间组A3监测PDCCH,即不监测PDCCH,由于第一搜索空间组A1对应的跳过时长为3个时隙,终端设备经过3个时隙后从第三搜索空间组切出来。如图5中(b)所示,终端设备根据第二搜索空间组A2即搜索空间2监测PDCCH时,在时隙1接收来自网络设备的指示信息,从而切换到根据第三搜索空间组A3监测PDCCH,即不监测PDCCH,由于第三搜索空间组A3对应的跳过时长为9个时隙,终端设备经过9个时隙后从第三搜索空间组A3切出来。示例性地,网络设备的指示信息可以包括在下行控制信息DCI中。
另一个实施例中,如图6所示,第一搜索空间组A1与第二搜索空间组A2各包括两个搜索空间。如图6中(a)所示,第一搜索空间组A1包括搜索空间1和搜索空间2,搜索空间1和搜索空间2对应的监测周期均为2个时隙。示例性地,搜索空间1和搜索空间2的频域监测位置相同,搜索空间1的时域监测位置为一个监测周期中的偶数时隙,搜索空间2对应的时域监测位置为一个监测周期中的奇数时隙。如图6中(b)所示,第二搜索空间组A2包括搜索空间3和搜索空间4,搜索空间3和搜索空间4对应的监测周期均为5个时隙。示例性地,搜索空间3和搜索空间4的频域监测位置相同,搜索空间3的时域监测位置为一个监测周期中第一个时隙,搜索空间4的时域监测位置为一个监测周期的第二个时隙。此 外,网络设备还配置第一搜索空间组A1对应的跳过时长为3个时隙,第二搜索空间组A2对应的跳过时长为9个时隙。如图6中(a)所示,终端设备根据第一搜索空间组A1(搜索空间1和搜索空间2)监测PDCCH时,在时隙1接收来自网络设备的指示信息,从而切换到根据第三搜索空间组A3监测PDCCH,即不监测PDCCH,由于第一搜索空间组A1对应的跳过时长为3个时隙,终端设备经过3个时隙后从第三搜索空间组A3切出来。如图5中(b)所示,终端设备根据第二搜索空间组A2(搜索空间3和搜索空间4)监测PDCCH时,在时隙1接收来自网络设备的指示信息,从而切换到根据第三搜索空间组A3监测PDCCH,即不监测PDCCH,由于第三搜索空间组A3对应的跳过时长为9个时隙,终端设备经过9个时隙后从第三搜索空间组A3切出来。示例性地,网络设备的指示信息可以包括在下行控制信息DCI中。
一种可能的实现方式中,各个非空的搜索空间组对应的跳过时长可以是绝对时长,即以毫秒或时隙为单位。例如,上述第一搜索空间组A1对应的跳过时长为3ms,第二搜索空间组A2对应的跳过时长为9ms;又如,如上所述,第一搜索空间组A1对应的跳过时长为3个时隙,第二搜索空间组A2对应的跳过时长为9个时隙。另一种可能的实现方式中,一个非空的搜索空间组包括的所有搜索空间各自对应的跳过时长可以不同,例如,每个搜索空间对应的跳过时长可以为其监测周期的倍数。本申请对此不做限定。
示例性地,网络设备可以通过配置定时器(timer)来配置各个非空的搜索空间组对应的跳过时长。例如,网络设备可以配置长度为3ms的第一定时器和长度为9ms的第二定时器,分别对应上述第一搜索空间组A1与第二搜索空间组A2。进而,当终端设备从第一搜索空间组A1(或第二搜索空间组A2)切到第三搜索空间组A3时,启动第一定时器(或第二定时器),当第一定时器(或第二定时器)超时后,终端设备从空的第三搜索空间组A3中切出来。
在上述实现方式中,两个非空的搜索空间组分别对应不同的跳过时长。通过为不同的搜索空间组配置不同的跳过时长,可以使得跳过时长更加匹配当前使用的搜索空间组中搜索空间的监测周期,从而降低终端设备的功耗。其他实施例中,终端设备被配置的非空的搜索空间组可以为两个以上,各个非空的搜索空间组对应的跳过时长可以不同也可以相同。
需要说明的是,为了更方便描述及理解本申请方案,以下描述和附图以非空的搜索空间组包括一个搜索空间为例进行介绍,不构成对本申请保护范围的限定。
一种示例中,终端设备切出空搜索空间组后,可以切换回根据原来的搜索空间组监测PDCCH。如图5中(a)所示,终端设备经过3个时隙从第三搜索空间组A3切出来后,切换回根据原来的第一搜索空间组A1继续监测PDCCH。如图5中(b)所示,终端设备经过9个时隙后从第三搜索空间组A3切出来后,切换回根据原来的第二搜索空间组A2继续监测PDCCH。
另一种示例中,终端设备切出空搜索空间组后,可以切换到根据默认的搜索空间组监测PDCCH。假设默认搜索空间组为第一搜索空间组A1。如图7中(a)所示,终端设备经过3个时隙从第三搜索空间组A3切出来后,切换到根据默认的第一搜索空间组A1监测PDCCH。如图7中(b)所示,终端设备经过9个时隙后从第三搜索空间组A3切出来后,切换到根据默认的第一搜索空间组A1监测PDCCH。可以理解的,默认搜索空间组也可以是第二搜索空间组A2,或者网络设备配置的另一个非空的第四搜索空间组A4。
一种可能的实现方式中,如图5中(a)所示,终端设备根据第一搜索空间组A1即搜索空间1监测PDCCH时,在时隙1接收来自网络设备的DCI,从而切换到根据第三搜索空间组A3监测PDCCH,该DCI可以包括指示信息,指示第一搜索空间组A1对应的跳过时长(3个时隙)。如图5中(b)所示,终端设备根据第二搜索空间组A2即搜索空间2监测PDCCH时,在时隙1接收来自网络设备的DCI,从而切换到根据第三搜索空间组A3监测PDCCH,该DCI可以包括指示信息,指示第二搜索空间组A2对应的跳过时长(9个时隙)。
另一种可能的实现方式中,各个非空搜索空间组的配置信息可以配置其对应的跳过时长。其中,各个搜索空间组的配置信息可以是网络设备通过高层配置信令配置的,具体地,高层配置信令也可以称为高层信令(higher layer signaling),高层配置信令可以是RRC信令。例如,上述实施例中,第一搜索空间组A1的配置信息可以配置其对应的跳过时长(3个时隙),第二搜索空间组A2的配置信息可以配置其对应的跳过时长(9个时隙)。具体地,第一搜索空间组A1的配置信息可以包括第一参数,该第一参数可以指示第一搜索空间组A1对应的跳过时长。同理,第二搜索空间组A2的配置信息可以包括第二参数,该第二参数可以配置第二搜索空间组A2对应的跳过时长。
又一种可能的实现方式中,该空搜索空间组的配置信息可以配置各个非空的搜索空间组与跳过时长之间的映射关系。例如,上述实施例中,第三搜索空间组A3的配置信息可以配置:第一搜索空间组A1对应的跳过时长(3个时隙)以及第二搜索空间组A2对应的跳过时长(9个时隙)。具体地,第三搜索空间组A3的配置信息可以包括第一参数和/或第二参数,该第一参数可以指示第一搜索空间组A1关联的跳过时长(3个时隙)和第二搜索空间组A2关联的跳过时长(9个时隙);或者该第一参数指示第一搜索空间组A1关联的跳过时长(3个时隙),第二参数指示第二搜索空间组A2关联的跳过时长(9个时隙)。
在本实施例中,不同非空的搜索空间组可以对应不同的跳过时长,因此,通过利用空搜索空间组实现停止监测一段时间PDCCH,可以降低终端设备的功耗。进一步地,如图5及图6所示,第一搜索空间组A1包括的搜索空间的监测周期小于第二搜索空间组A2包括的搜索空间组的监测周期时,第一时长可以小于第二时长。这样,跳过时长与终端设备当前使用的搜索空间组可以更加匹配,可以进一步降低终端设备的功耗。
本申请实施例还提供了另一种PDCCH监测的方法,适用于图1所示的通信系统。该方法包括:网络设备为终端设备配置第一搜索空间组B1,其中,第一搜索空间组B1为空搜索空间组,即第一搜索空间组B1不包括任何搜索空间。终端设备接收到网络设备发送的DCI时,如果该DCI包括第一指示信息,终端设备在第一时长内根据第一搜索空间组B1监测PDCCH,即在第一时长内不监测PDCCH;如果该DCI包括第二指示信息,终端设备在第二时长内根据第一搜索空间组B1监测PDCCH,即在第二时长内不监测PDCCH,其中,第一时长与第二时长可以相同或不同。
相应地,网络设备向终端设备发送下行控制信息DCI时,若该DCI包括第一指示信息,该第一指示信息指示终端设备在第一时长内根据第一搜索空间组B1监测PDCCH;若该DCI包括第二指示信息,该第二指示信息指示终端设备在第二时长内根据第一搜索空间组B1监测PDCCH。
一些实施例,网络设备还为终端设备配置非空的第二搜索空间组B2,其中,第二搜索空间组B2为非空搜索空间组,即第二搜索空间组B2至少包括一个搜索空间。终端设备接 收到网络设备发送的DCI时,如果该DCI包括第三指示信息,终端设备根据第二搜索空间组B2监测PDCCH。
一些实施例中,网络设备还为终端设备配置非空的第三搜索空间组B3,即第三搜索空间组B3至少包括一个搜索空间,第二搜索空间组B2与第三搜索空间组B3不同。可选地,第二搜索空间组B2与第三搜索空间组B3的交集可以是空集,也可以是非空集。终端设备接收到网络设备发送的DCI时,如果该DCI包括第四指示信息,终端设备根据该第三搜索空间组B3监测PDCCH。可选地,网络设备也可以为终端设备配置更多的搜索空间组。
示例性地,网络设备发送的DCI中包括的指示信息可以指示N个状态值。例如,第一指示信息、第二指示信息、第三指示信息和第四指示信息可以分别指示N个状态值中四个不同的状态值。具体地,DCI包括的指示信息所指示的状态值可以为比特值信息。
示例性地,如表1所示,终端设备被配置空的第一搜索空间组B1,非空的第二搜索空间组B2及非空的第三搜索空间组B3。网络设备发送的DCI中携带的指示信息可以指示不同的状态值,不同状态值匹配了不同的指示含义。示例性地,不同状态值对应的指示含义可以是网络设备通过RRC信令配置的。表1中,当终端设备接收到网络设备发送的DCI时,如果DCI中包括的指示信息指示状态值“11”,则终端设备根据第一搜索空间组B1在第一时长监测PDCCH,即在第一时长内不监测PDCCH;如果DCI中包括的指示信息指示状态值“10”,则终端设备根据第一搜索空间组B1在第二时长监测PDCCH,即在第二时长内不监测PDCCH;如果DCI中包括的指示信息指示状态值“00”,则终端设备根据第二搜索空间组B2监测PDCCH;如果DCI中包括的指示信息指示状态值“01”,则终端设备根据第三搜索空间组B3监测PDCCH。通过使用不同的指示信息指示不同的状态值、不同的状态值指示不同的含义,可以动态指示当前使用的搜索空间组对应的跳过时长。
如表1所示,网络设备配置的空的第一搜索空间组B1对应两个不同的跳过时长。可选地,一个空搜索空间组可以对应更多个相同或不同的跳过时长,并通过不同的指示信息指示。可选地,网络设备可以通过配置定时器来实现不同的跳过时长。
表1
状态值 指示含义
11 根据第一搜索空间组B1在第一时长监测PDCCH
10 根据第一搜索空间组B1在第二时长监测PDCCH
00 根据第二搜索空间组B2监测PDCCH
01 根据第三搜索空间组B3监测PDCCH
示例性地,上述空的第一搜索空间组B1对应的第一时长和第二时长可以分别为3ms和9ms。可选地,该第一搜索空间组B1对应的时长也可以为其他形式,例如,第一搜索空间组B1对应的第一时长和第二时长可以分别为3个时隙和9个时隙。
示例性地,终端设备根据空搜索空间组监测PDCCH时,经过一段时长后,可以切换回根据非空的搜索空间组监测PDCCH。可选地,终端设备可以切换回根据原来的搜索空间组监测PDCCH,或者切换到根据默认的搜索空间组监测PDCCH。其中,原来的搜索空间组可以是终端设备切换到空搜索空间组之前,该终端设备使用的非空的搜索空间组。
在本实施例中,可以为一个空搜索空间组配置不同的时长,从而实现终端设备跳过不 同时长的PDCCH监测。当网络设备发送DCI指示终端设备切换到空搜索空间组,即跳过一段时间的PDCCH监测时,跳过时长可以匹配终端设备当前正在使用的搜索空间组,进而降低终端设备的功耗。
上述实施例中,一个空搜索空间组可以对应不同的跳过时长。本申请实施例还提供了另一种PDCCH监测的方法,使用不同的空搜索空间组对应不同的跳过时长。该方法包括:网络设备为终端设备配置第一搜索空间组C1和第二搜索空间组C2,其中,该第一搜索空间组C1和第二搜索空间组C2均为空搜索空间组,即第一搜索空间组C1和第二搜索空间组C2均不包括任何搜索空间。终端设备接收网络设备发送的DCI,如果该DCI包括第一指示信息,终端设备在第一时长内根据第一搜索空间组C1监测PDCCH,即在第一时长内停止监测PDCCH;如果该DCI包括第二指示信息,终端设备在第二时长内根据第二搜索空间组C2监测PDCCH,即在第二时长内停止监测PDCCH,该第一时长与第二时长可以相同或不同。示例性地,该第一搜索空间组C1对应第一时长,第二搜索空间组C2对应第二时长。
相应地,网络设备向终端设备发送下行控制信息DCI时,若该DCI包括第一指示信息,该第一指示信息指示终端设备在第一时长内根据第一搜索空间组C1监测PDCCH;若该DCI包括第二指示信息,该第二指示信息指示终端设备在第二时长内根据第二搜索空间组C2监测PDCCH。
可以理解的,网络设备还为终端设备配置非空的第三搜索空间组C3,终端设备在第一时长内根据第一搜索空间组C1监测PDCCH后,可以切换到根据非空的第三搜索空间组C3监测PDCCH,即开始检测PDCCH。终端设备在第二时长内根据第二搜索空间组监测PDCCH后,也可以切换到根据非空的第三搜索空间组C3监测PDCCH。可选地,网络设备可以为终端设备配置更多非空的搜索空间组,网络设备也可以为终端设备配置更多空的搜索空间组。
示例性地,终端设备被配置空的第一搜索空间组C1和空的第二搜索空间组C2,以及非空的第三搜索空间组C3。如图8中(a)所示,终端设备在时隙1接收到网络设备发送的指示信息,从而切换到根据第一搜索空间组C1监测PDCCH,第一搜索空间组C1对应的第一时长为3个时隙,因此,终端设备跳过3个时隙的PDCCH监测。经过3个时隙后,终端设备根据第三搜索空间组C3监测PDCCH。如图8中(b)所示,终端设备在时隙1接收到网络设备发送的指示信息,从而切换到根据第二搜索空间组C2监测PDCCH,第二搜索空间组C2对应的第二时长为9个时隙,因此,终端设备跳过9个时隙的PDCCH监测。经过9个时隙后,终端设备根据第三搜索空间组C3监测PDCCH。示例性地,网络设备发送的指示信息可以包括在下行控制信息DCI中。可选地,不同的空搜索空间组对应的时长也可以为其他形式,例如,第一搜索空间组C1对应的第一时长为3ms,第二搜索空间组C2对应的时长为9ms。
一种可能的实现方式中,网络设备可以通过RRC信令配置第一搜索空间组C1和第一时长对应,RRC信令还可以配置第二搜索空间组C2和第二时长对应。可选地,可以通过如表2所示的状态值指示空搜索空间组与跳过时长之间的对应关系。
示例性地,如表2所示,终端设备被配置空的第一搜索空间组C1和空的第二搜索空间组C2,以及非空的第三搜索空间组C3和非空的第四搜索空间组C4。网络设备发送的DCI中携带的指示信息可以指示不同的状态值,不同状态值匹配了不同的指示含义。示例性地, 不同状态值对应的指示含义可以是网络设备通过RRC信令配置的。表2中,当终端设备接收到网络设备发送的DCI时,如果DCI中包括的指示信息指示状态值“11”,则终端设备根据第一搜索空间组C1在第一时长监测PDCCH,即在第一时长内不监测PDCCH;如果DCI中包括的指示信息指示状态值“10”,则终端设备根据第二搜索空间组C2在第二时长监测PDCCH,即在第二时长内不监测PDCCH;如果DCI中包括的指示信息指示状态值“00”,则终端设备根据第三搜索空间组C3监测PDCCH;如果DCI中包括的指示信息指示状态值“01”,则终端设备根据第四搜索空间组C4监测PDCCH。通过使用不同的状态值指示不同的含义,可以动态指示当前使用的搜索空间组对应的跳过时长。
如表2所示,网络设备配置空的第一搜索空间组C1和空的第二搜索空间组C2分别对应相应的跳过时长。可选地,网络设备可以配置更多个空的搜索空间组及其对应的跳过时长,并通过不同的指示信息指示,各个空的搜索空间组对应的跳过时长可以相同或不同。可选地,网络设备可以通过配置定时器来实现不同的跳过时长。
表2
状态值 指示含义
11 根据第一搜索空间组C1在第一时长监测PDCCH
10 根据第二搜索空间组C2在第二时长监测PDCCH
00 根据第三搜索空间组C3监测PDCCH
01 根据第四搜索空间组C4监测PDCCH
终端设备接收到DCI时,DCI中包括的指示信息可以指示状态值,即可确定该状态值对应的空搜索空间组、以及该空搜索空间组对应的跳过时长,从而实现跳过不同时长的PDCCH监测。
另一种可能的实现方式中,各个空搜索空间组的配置信息可以配置其对应的跳过时长。例如,上述第一搜索空间组C1的配置信息可以包括第一参数,该第一参数可以指示第一时长,上述第二搜索空间组C2的配置信息可以包括第二参数,该第二参数可以指示第二时长。当终端设备使用空搜索空间组时,可以根据其配置信息获取该空搜索空间组对应的跳过时长。
示例性地,终端设备根据空搜索空间组监测PDCCH经过一段时长后,可以切换回根据非空的搜索空间组监测PDCCH。可选地,终端设备可以切换回根据原来的搜索空间组监测PDCCH(例如:图8所示的第三搜索空间组C3),或者切换到根据默认的搜索空间组监测PDCCH。
在本实施例中,可以通过不同的空搜索空间组为终端设备配置不同的跳过时长,当网络设备发送DCI指示终端设备切换到空搜索空间组,即跳过一段时间的PDCCH监测时,跳过时长可以匹配终端设备当前正在使用的搜索空间组,进而降低终端设备的功耗。
在上述几种实施方式中,终端设备需要在收到网络设备发送的下行调度信息DCI后,切换到根据空搜索空间组监测PDCCH,即需要指示信息指示终端设备切换到空搜索空间组。然而,通常情况下,当终端设备一段时间没有收到调度信息时,很可能在接下来的一段时间内也不会收到调度信息。因此,如果终端设备在一段时间内没有收到调度信息,可以触发终端设备停止监测一段时间的PDCCH,即不需要指示信息指示终端设备切换到空搜索空 间组(隐式切换)。
基于此,本申请实施例还提供了另一种PDCCH监测的方法,适用于图1所示的通信系统。该方法可以包括:终端设备被配置第一搜索空间组D1,其中,第一搜索空间组D1为非空搜索空间组,即第一搜索空间组D1至少包括一个搜索空间。当终端设备根据第一搜索空间组D1监测PDCCH时,如果该终端设备经过第一时长没有收到调度,即经过第一时长没有监测到PDCCH,该终端设备停止监测PDCCH。
示例性地,如图9所示,终端设备被配置至少第一搜索空间组D1和第二搜索空间组D2,其中,第一搜索空间组D1为非空搜索空间组,即第一搜索空间组D1至少包括一个搜索空间,第二搜索空间组D2为空搜索空间组,即第二搜索空间组D2不包括任何搜索空间。当终端设备根据第一搜索空间组D1监测PDCCH时,如果该终端设备经过第一时长没有监测到PDCCH,终端设备切换到根据第二搜索空间组D2监测PDCCH,即不监测PDCCH。通过该隐式切换方式,可以指示终端设备经过一段时间后自动切换到根据空搜索空间组监测PDCCH,无需网络设备发送信令指示,从而降低信令开销。
示例性地,终端设备开始根据第一搜索空间组D1监测PDCCH时,启动第一定时器,第一定时器的时长设置为第一时长,如果该终端设备经过第一时长没有监测到PDCCH,即第一定时器超时后,终端设备切换到根据第二搜索空间组D2监测PDCCH;如果该终端设备监测到PDCCH,则重置该第一定时器,第一定时器开始重新计时,直至超时,终端设备切换到根据第二搜索空间组D2监测PDCCH。
一种实施例中,终端设备停止监测PDCCH经过第二时长后,该终端设备根据第一搜索空间组D1监测PDCCH。示例性地,如图9所示,终端设备根据第二搜索空间组D2监测PDCCH经过第二时长之后,自动切换回第一搜索空间组D1,以继续监测PDCCH,相应地,网络设备根据第一搜索空间组D1向终端设备发送PDCCH。由于第二搜索空间组D2为空搜索空间组,即终端设备在第二时长不需要监测PDCCH,可以降低终端设备的功耗,相应地,网络设备在第二时长内不向终端设备发送PDCCH。
一种可能的实现方式中,第一时长和第二时长可以没有关联关系。示例性地,第一时长和第二时长可以相等或不相等。
另一种可能的实现方式中,第一时长与第二时长可以具有关联关系,也就是说,第一时长可以根据第二时长确定,或者第二时长可以根据第一时长确定。如上所述,终端设备在一段时间未收到调度时,接下来一段时间很可能也收不到调度,此外,终端设备未收到调度的时间越长,接下来收不到调度的时间可能也相应地越长。示例性地,第一时长可以与第二时长正相关。其中,第一时长与第二时长正相关,可以是第一时长与第二时长成正比、或者第一时长与第二时长之间具有映射关系、或者第一时长是通过第二时长加/减一个数得到的。可选地,第一时长与第二时长成正比,可以是第一时长是通过第二时长乘/除一个数得到的,例如,第一时长可以是第二时长的k倍,其中,k不等于0,k可以是网络设备配置的,也可以为预定义值。这样,网络设备可以为终端设备配置第一时长,终端设备进而可以根据第一时长预测第二时长;或者,网络设备可以为终端设备配置第二时长,终端设备进而可以根据第二时长预测第一时长,从而进一步降低信令开销。
相应地,网络设备为终端设备配置非空的第一搜索空间组D1,网络设备还为终端设备配置第一预设时长,其中,该第一预设时长为第一时长、或者为用于确定第一时长的第二 时长,其中,第一时长为所述终端设备停止监测PDCCH前,终端设备根据第一搜索空间组D1没有监测到PDCCH的最大时长。示例性地,当网络设备确定终端设备根据该第一搜索空间组D1监测PDCCH时,若网络设备经过第一时长没有发送PDCCH,网络设备确定终端设备停止监测PDCCH,并停止发送PDCCH。
网络设备还为终端设备配置空的第二搜索空间组D2,可选地,该第一时长为终端设备根据第二搜索空间组D2监测PDCCH前,终端设备根据第一搜索空间组D1没有监测到PDCCH的最大时长。
示例性地,第一预设时长为第一时长,第二时长是根据该第一时长确定的;或者,第一预设时长为第二时长,第一预设时长用于确定第一时长。其中,第二时长为终端设备根据第一搜索空间组D1经过第一时长没有监测到PDCCH后,终端设备根据第二搜索空间组D2监测PDCCH的最大时长。
终端设备还可以被配置第三搜索空间组D3,第三搜索空间组D3是非空搜索空间组。其中,第一搜索空间组D1与第三搜索空间组D3不同,第一搜索空间组D1与第三搜索空间组D3的交集可以是空集,也可以是非空集。同理,当终端设备根据第三搜索空间组D3监测PDCCH时,如果该终端设备经过第三时长没有收到调度,即经过第三时长没有监测到PDCCH,该终端设备停止监测PDCCH。终端设备停止监测PDCCH经过第四时长之后,切换回第三搜索空间组D3监测PDCCH。
示例性地,如图10所示,同理,当终端设备根据第三搜索空间组D3监测PDCCH时,如果该终端设备经过第三时长没有监测到PDCCH,终端设备切换到根据第二搜索空间监测PDCCH,即不监测PDCCH。终端设备根据第二搜索空间组D2监测PDCCH经过第四时长之后,切换回第三搜索空间组D3监测PDCCH。由于第二搜索空间组D2为空搜索空间组,即终端设备在第四时长不需要监测PDCCH,从而降低终端设备的功耗。
示例性地,第三时长与第四时长可以具有关联关系,也可以不具有关联关系,第三时长与第四时长之间的关系可以参照上述第一时长与第二时长之间关系的表述,本申请在此不再赘述。
同理,相应地,网络设备为终端设备配置非空的第三搜索空间组D3,网络设备还为终端设备配置第二预设时长,其中,该第二预设时长为第三时长、或者为用于确定第三时长的第四时长,其中,第三时长为所述终端设备停止监测PDCCH前,终端设备根据第三搜索空间组D3没有监测到PDCCH的最大时长。示例性地,当网络设备确定终端设备根据该第三搜索空间组D3监测PDCCH时,若网络设备经过第三时长没有发送PDCCH,网络设备确定终端设备停止监测PDCCH,并停止发送PDCCH。
可选地,该第三时长为终端设备根据第二搜索空间组D2监测PDCCH前,终端设备根据第三搜索空间组D3没有监测到PDCCH的最大时长。
示例性地,第二预设时长为第三时长,第四时长是根据该第三时长确定的;或者,第二预设时长为第四时长,第二预设时长用于确定第三时长。其中,第四时长为终端设备根据第三搜索空间组D3经过第三时长没有监测到PDCCH后,终端设备根据第二搜索空间组D2监测PDCCH的最大时长。
示例性地,第一搜索空间组D1对应的第一时长与第三搜索空间组D3对应的第三时长可以相同,也可以不同。
一种可能的实现方式中,第一搜索空间组D1对应的第一时长与第三搜索空间组D3对应的第三时长可以是网络设备通过高层配置信令配置的。具体地,终端设备接收网络设备发送的高层配置信令RRC,RRC信令可以包括时长配置信息,其中,该时长配置信息可以包括第一搜索空间组D1和第一时长的对应关系,和/或,第三搜索空间组D3和第三时长的对应关系。可选地,该时长配置信息可以包括第一搜索空间组D1和第二时长的对应关系,和/或,第三搜索空间组D3与第四时长的对应关系。
另一种可能的实现方式中,各个非空搜索空间组的配置信息可以配置其对应的时长。其中,各个搜索空间组的配置信息可以是网络设备通过高层配置信令配置的。例如,上述实施例中,第一搜索空间组D1的配置信息可以包括第一参数,该第一参数可以指示第一时长,第三搜索空间组D3的配置信息可以包括第二参数,该第二参数可以指示第三时长。可选地,第一搜索空间组D1的配置信息还可以指示第二时长,第三搜索空间组D3的配置信息还可以指示第四时长。可选地,类似于前文所述,第一搜索空间组D1对应的第二时长和第三搜索空间组D3对应的第四时长也可以由空的第二搜索空间组D2的配置信息指示。本申请对此均不作限定。
如图10所示,终端设备在监测PDCCH时,可以在上述三个搜索空间组中切换。具体地,终端设备由根据非空搜索空间组监测PDCCH切换到根据空搜索空间组监测PDCCH时,可以通过上述隐式指示方式进行切换。当终端设备在两个非空的搜索空间组中进行切换时,可以通过网络设备发送的DCI指示。网络设备给终端设备发送的DCI可以包括指示信息,具体地,DCI包括的指示信息可以以比特值形式指示搜索空间组的切换。一种可能的实现方式中,DCI中的指示信息可以以绝对值方式指示搜索空间组的切换,即,指示信息的取值指示监测哪一个搜索空间。示例性地,如图10及表3所示,终端设备根据第一搜索空间组D1或第三搜索空间组D3监测PDCCH时,若终端设备接收到的DCI中包括的指示信息取值为“1”,终端设备切换到根据第一搜索空间组D1监测PDCCH,也就是说,指示信息取值为“1”对应新的搜索空间组为第一搜索空间组D1。同理,若终端设备接收到的DCI中包括的指示信息取值为“0”,终端设备切换到根据第三搜索空间组D3监测PDCCH,即指示信息取值为“0”对应新的搜索空间组为第三搜索空间组D3。
表3
Figure PCTCN2022076521-appb-000001
另一种可能的实现方式中,DCI中的指示信息可以以相对值方式指示搜索空间组的切换,即,指示信息的取值指示终端设备是否切换到新的非空搜索空间组监测PDCCH。如表4所示,终端设备根据第一搜索空间组D1监测PDCCH时,若终端设备接收到的DCI中包括的指示信息取值为“1”,终端设备继续根据第一搜索空间组D1监测PDCCH,若终端设备接收到的DCI中包括的指示信息取值为“0”,终端设备切换到根据第三搜索空间组D3监测PDCCH。终端设备根据第三搜索空间组D3监测PDCCH时,若终端设备接收到的DCI 中包括的指示信息取值为“1”,终端设备继续根据第三搜索空间组D3监测PDCCH,若终端设备接收到的DCI中包括的指示信息取值为“0”,终端设备切换到根据第一搜索空间组D1监测PDCCH。也就是说,指示信息取值为“1”表示终端设备继续根据原搜索空间组监测PDCCH,指示信息取值为“0”表示终端设备切换到另一搜索空间组监测PDCCH。
表4
Figure PCTCN2022076521-appb-000002
可以理解的,DCI包括的指示信息取值与搜索空间组切换之间的对应关系也可以有其他形式,本申请对此不做限定。
通常情况下,终端设备在三个搜索空间组中进行切换需要2比特值进行指示。如上所述,在本申请实施方式中,通过隐式指示终端设备切入和切出空搜索空间组,只需要1比特值即可实现指示终端设备在三个搜索空间组中进行切换,从而可以在降低终端设备功耗的同时节省信令开销。
一些实施例中,终端设备由根据第一搜索空间组D1监测PDCCH隐式切换到根据第二搜索空间组D2监测PDCCH(即不监测PDCCH)后,经过该非空的第一搜索空间组D1对应的跳过时长(例如,图5中所示的3个时隙)后,切出该空搜索空间组。同理,终端设备由根据第三搜索空间组D3监测PDCCH隐式切换到根据第二搜索空间组D2监测PDCCH后,经过该非空的第三搜索空间组D3对应的跳过时长(例如,图5中所示的9个时隙)后,切出该空搜索空间组。具体地,各个非空搜索空间组的配置信息可以配置其对应的跳过时长,或者,空搜索空间组的配置信息可以配置各个非空的搜索空间组与跳过时长之间的映射关系,具体配置方法可以参照前文表述,在此不再赘述。
一些实施例中,终端设备隐式切换到空搜索空间组监测PDCCH一段时间后,可以切换回根据原来的搜索空间组监测PDCCH,或者切换到根据默认的搜索空间组监测PDCCH。终端设备切换出空搜索空间组的方式可以参考图5、图7及其对应的表述,在此不再赘述。
可以理解的是,网络设备为终端设备配置的非空的搜索空间组可以为更多组,本申请对此不做限定。
通常情况下,终端设备发送上行调度请求(scheduling request,SR)或随机接入信道(physiacal random access channel,RACH)后,基站会发送PDCCH调度上行数据传输。因此,当终端设备发送SR或者RACH后,应当开始监测PDCCH。基于此,一些实施例中,终端设备不监测PDCCH(例如,终端设备根据空搜索空间组监测PDCCH)时,当终端设备发送SR或者RACH后,终端设备开始监测PDCCH(例如,终端设备由根据空搜索空间监测PDCCH切换到根据非空搜索空间组监测PDCCH)。相应地,当网络设备收到终端设备发送的SR或者RACH后,网络设备可以发送PDCCH。示例性地,终端设备在第n个时隙发送SR或者RACH后,该终端设备在第n+k个时隙根据非空的搜索空间组监测PDCCH,相应地,网络设备第n+k个时隙发送PDCCH,其中,k为大于或等于1的整数。
可选地,终端设备可以切换回根据原来的搜索空间组监测PDCCH,或者切换到根据默认的搜索空间组监测PDCCH。通过设置终端设备隐式切换出空搜索空间组的方式,可以在降低终端设备功耗的同时,在终端设备有数据传输需求时快速开始监测PDCCH,从而降低数据传输时延。
在本实施例中,通过设置上述隐式切换方式,终端设备可以自动切换到空搜索空间组,同时,可以实现不同搜索空间组对应不同的跳过时长,可以在降低终端设备功耗的同时节省信令开销。
上述实施例中,通过利用空搜索空间组来实现跳过一段时间的PDCCH监测,可以节省终端设备的功耗。进一步地,本申请还提出配置空搜索空间组的方法。
通常,网络设备为终端设备配置搜索空间时,可以在搜索空间的配置信息中包含其关联的搜索空间组的索引值,表示该索引值对应的搜索空间组包括该搜索空间。示例性地,网络设备为终端设备配置搜索空间1时,可以在搜索空间1的配置信息中,包含第一搜索空间组的索引值“0”和第二搜索空间组的索引值“1”,表示搜索空间1关联到第一搜索空间组和第二搜索空间组,也就是说,索引值“0”对应的第一搜索空间组以及索引值“1”对应的第二搜索空间组均包括搜索空间1。
然而,网络设备通过上述方式为终端设备配置搜索空间时,会出现理解模糊的问题。例如,若网络设备最多为终端设备配置2个搜索空间组,即网络设备可以为终端设备配置1个搜索空间组或配置2个搜索空间组。若网络设备为终端设备配置了三个搜索空间,分别为搜索空间1、搜索空间2和搜索空间3。其中,搜索空间1、搜索空间2和搜索空间3均只关联到第一搜索空间组。此时,会存在以下两种理解:
理解一:网络设备只为终端设备配置了1个搜索空间组,即第一搜索空间组;
理解二:网络设备为终端设备配置了2个搜索空间组,即第一搜索空间组和第二搜索空间组。其中,第一搜索空间组为非空搜索空间组,包括搜索空间1、搜索空间2和搜索空间3,第二搜索空间组为空的搜索空间组,即第二搜索空间组不包括任何搜索空间。
因此,如果将“空的搜索空间组未关联到任何搜索空间”作为判断空搜索空间组的条件,会出现上述理解模糊的问题。为了解决这个问题,本申请提出了配置空搜索空间组的方法,可以参见如下三种示例的介绍。
示例一:如前所述,网络设备可以直接配置空的搜索空间组对应的索引值。
示例二:网络设备为终端设备配置第一信息,相应地,终端设备接收网络设备配置的第一信息,其中,该第一信息指示网络设备为终端设备配置了n个搜索空间组。具体地,第一信息包括网络设备为终端设备配置的搜索空间组中的个数n、或者第一信息包括网络设备为终端设备配置的搜索空间组的索引值范围0到n-1;或者第一信息包括网络设备为终端设备配置的搜索空间组的索引值的最大值n-1。可以理解的,搜索空间组的索引值范围和索引值的最大值也可以为其他形式,例如,搜索空间组的索引值范围为1到n、索引值的最大值为n。
进一步地,第一信息指示网络设备为终端设备配置了n个搜索空间组,其中,该n个搜索空间组中的m个搜索空间组具有关联的搜索空间,即该m个搜索空间组为非空搜索空间组,该n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间,即该(n-m)个搜索空间组为空搜索空间组。
例如,当网络设备配置的搜索空间组的数量为3时,网络设备可以直接配置搜索空间组的数量为3、或者网络设备配置搜索空间组的索引值范围为“0-2”,或者网络设备配置搜索空间组中的索引值的最大值为“2”。其中,第一搜索空间组、第二搜索空间组和第三搜索空间组对应的索引值分别为“0、1、2”。此时,若第一搜索空间组和第二搜索空间组均有搜索空间关联,而第三搜索空间组没有搜索空间关联,则该第三搜索空间组为空的搜索空间组。本示例中,网络设备通过为终端设备配置搜索空间组的个数、或者配置搜索空间组的索引值的范围、或者配置搜索空间组的索引值的最大值,即可知道配置的搜索空间组的个数,从而通过“是否有搜索空间关联”区分空搜索空间组和非空搜索空间组,避免出现上述理解模糊的问题。
示例三:网络设备为终端设备配置第一搜索空间,该第一搜索空间与第一搜索空间组关联,其中,第一搜索空间组对应第一索引。若第一索引大于第二索引,则终端设备确定被配置第二搜索空间组,该第二搜索空间组对应第二索引。
其中,若终端设备被配置的所有搜索空间均未与第二搜索空间组关联,则该第二搜索空间组不包括任何搜索空间,即该第二搜索空间组为空搜索空间组。
进一步地,若第一索引小于第三索引,且终端设备被配置的所有搜索空间组均未与第三搜索空间组关联,则终端设备确定未被配置第三搜索空间组,其中,该第三搜索空间组对应第三索引。
例如,若网络设备为终端设备配置的第一搜索空间组至少关联搜索空间1,且第一搜索空间组对应的索引值为“1”,如果索引值为“0”的搜索空间组未关联任何搜索空间,由于索引值“1”大于索引值“0”,则在本例中网络设备和终端设备均认为索引值为“0”的搜索空间组被配置给了终端设备,且该索引值为“0”的搜索空间组为空搜索空间组。同时,如果索引值为“2”搜索空间组也未关联到任何搜索空间,由于索引值“1”小于索引值“2”,则在本例中网络设备和终端设备均认为不存在索引值为“2”的搜索空间组,即网络设备未配置索引值为“2”的搜索空间组。
本示例中,通过定义该规则,网络设备可以将较小的索引值配置给空的搜索空间组,通过索引值大小以及“是否有搜索空间关联”,来区分空搜索空间组、非空搜索空间组以及未配置的搜索空间组,从而可以在不增加新的信元的同时,避免出现上述理解模糊的问题。
可以理解的,上述示例的配置空搜索空间组的方法,可以与上文任一实施例中提供的PDCCH监测的方法相结合,也可以单独使用,对此不做限定。
基于以上实施例,本申请实施例还提供了一种通信装置,参阅图11所示,通信装置1100可以包括收发单元1101和处理单元1102。其中,所述收发单元1101用于所述通信装置1100接收信息(消息或数据)或发送信息(消息或数据),所述处理单元1102用于对所述通信装置1100的动作进行控制管理。所述处理单元1102可以对所述收发单元1101接收的信号进行处理,所述处理单元1102还可以控制所述收发单元1101执行的步骤。
示例性地,该通信装置1100具体可以是上述实施例中的终端设备、所述终端设备中的处理器、芯片或者芯片系统,或者是一个功能模块等;或者,该通信装置1100具体可以是上述实施例中的网络设备、所述网络设备的处理器、芯片或者芯片系统,或者是一个功能模块等。
在一个实施例中,所述通信装置1100用于实现上述实施例中终端设备的功能时,具体 可以包括:
终端设备被配置第一搜索空间组,其中,所述第一搜索空间组包括至少一个搜索空间。所述处理单元1102根据所述第一搜索空间组监测PDCCH时,若所述处理单元1102经过第一时长没有监测到PDCCH,所述处理单元1102停止监测PDCCH。
在一种可选的实施方式中,终端设备还被配置第二搜索空间组,其中,所述第二搜索空间组不包括任何搜索空间。所述处理单元1102停止监测PDCCH,包括:所述处理单元1102根据所述第二搜索空间组监测PDCCH。
在一种可选的实施方式中,所述处理单元1102根据所述第二搜索空间组监测PDCCH经过第二时长后,所述处理单元1102用于根据所述第一搜索空间组监测PDCCH。
在另一种可选的实施方式中,所述第一时长是网络设备配置的,所述第二时长是根据所述第一时长确定的;或所述第二时长是所述网络设备配置的,所述第一时长是根据所述第二时长确定的。
在又一种可选的实施方式中,所述第一时长与所述第二时长正相关。
在又一种可选的实施方式中,所述第一时长与所述第二时长成正比。
一种示例性的实施方式中,所述终端设备被配置第三搜索空间组,所述第三搜索空间组包括至少一个搜索空间,所述第一搜索空间组与所述第三搜索空间组不同;所述处理单元1102根据所述第三搜索空间组监测PDCCH时,若所述处理单元1102经过第三时长没有监测到PDCCH,所述处理单元1102用于根据所述第二搜索空间组监测PDCCH。
在一种可选的实施方式中,所述处理单元1102根据所述第二搜索空间组监测PDCCH经过第四时长后,所述处理单元1102用于根据所述第三搜索空间组监测PDCCH。
在另一种可选的实施方式中,所述第三时长是所述网络设备配置的,所述第四时长是根据所述第三时长确定的;或所述第四时长是所述网络设备配置的,所述第三时长是根据所述第四时长确定的。
一种示例性的实施方式中,所述收发单元1101还用于接收下行控制信息DCI,所述处理单元1102根据所述第一搜索空间组监测PDCCH时,若所述收发单元1101接收到DCI且所述DCI包括的第一指示信息为所述第一取值,所述处理单元1102根据所述第一搜索空间组监测PDCCH;若所述收发单元1101接收到DCI且所述DCI包括的所述第一指示信息为所述第二取值,所述处理单元1102根据所述第三搜索空间组监测PDCCH。所述处理单元1102根据所述第三搜索空间组监测PDCCH时,若所述收发单元1101接收到DCI且所述DCI包括的所述第一指示信息为所述第一取值,所述处理单元1102根据所述第三搜索空间组监测PDCCH;若所述收发单元1101接收到DCI且所述DCI包括的所述第一指示信息为所述第二取值,所述处理单元1102根据所述第一搜索空间组监测PDCCH。
一种示例中,所述收发单元1101还用于发送上行调度请求SR或随机接入信道RACH。所述处理单元1102根据所述第二搜索空间组监测PDCCH时,所述收发单元1101发送上行调度请求SR或随机接入信道RACH后,所述处理单元1102根据所述第一搜索空间组监测PDCCH。
在一种可选的实施方式中,所述收发单元1101还用于接收网络设备发送的高层配置信令,所述高层配置信令指示所述第一搜索空间组与所述第一时长对应。
在一种可选的实施方式中,所述高层配置信令指示第一搜索空间组的标识与所述第一 时长对应。
在另一个实施例中,所述通信装置1100用于实现上述实施例中网络设备的功能时,具体可以包括:
网络设备为终端设备配置第一搜索空间组,其中,所述第一搜索空间组包括至少一个搜索空间;所述网络设备为所述终端设备配置第一预设时长,所述第一预设时长为第一时长或用于确定所述第一时长,其中,所述第一时长为所述终端设备停止监测PDCCH前,所述终端设备根据所述第一搜索空间组没有监测到PDCCH的最大时长。
在一种可选的实施方式中,所述处理单元1102确定所述终端设备根据所述第一搜索空间组监测PDCCH时,若所述收发单元1101经过所述第一时长没有发送PDCCH,所述处理单元1102确定所述终端设备停止监测PDCCH,所述收发单元1101停止发送PDCCH。
在一种可选的实施方式中,所述网络设备还为所述终端设备配置第二搜索空间组,其中,所述第二搜索空间组不包括任何搜索空间;所述第一时长为所述终端设备停止监测PDCCH前,所述终端设备根据所述第一搜索空间组没有监测到PDCCH的最大时长,包括:所述第一时长为所述终端设备根据所述第二搜索空间组监测PDCCH前,所述终端设备根据所述第一搜索空间组没有监测到PDCCH的最大时长。
在一种可选的实施方式中,所述第一预设时长为所述第一时长,第二时长是根据所述第一时长确定的;或所述第一预设时长用于确定所述第一时长,所述第一预设时长为所述第二时长;其中,所述第二时长为所述终端设备根据所述第一搜索空间组经过所述第一时长没有监测到PDCCH后,所述终端设备根据所述第二搜索空间组监测PDCCH的最大时长。
在又一种可选的实施方式中,所述第一时长与所述第二时长正相关。
在又一种可选的实施方式中,所述第一时长与所述第二时长成正比。
一种示例性的实施方式中,所述网络设备还为所述终端设备配置第三搜索空间组,其中,所述第三搜索空间组包括至少一个搜索空间,所述第一搜索空间组与所述第三搜索空间组不同;所述网络设备为所述终端设备配置第二预设时长,所述第二预设时长为第三时长或用于确定所述第三时长,其中,所述第三时长为所述终端设备停止监测PDCCH前,所述终端设备根据所述第三搜索空间组没有监测到PDCCH的最大时长。
在一种可选的实施方式中,所述处理单元1102确定所述终端设备根据第三搜索空间组监测PDCCH时,若所述收发单元1101经过所述第三时长没有发送PDCCH,所述处理单元1102确定所述终端设备根据所述第二搜索空间组监测PDCCH,所述收发单元1101停止发送PDCCH。
一种示例性的实施方式中,所述处理单元1102确定所述终端设备根据所述第一搜索空间组监测PDCCH时,所述收发单元1101向所述终端设备发送DCI,若所述DCI包括的第一指示信息为第一取值,所述第一指示信息指示所述终端设备根据所述第一搜索空间组监测PDCCH;若所述DCI包括的所述第一指示信息为第二取值,所述第一指示信息指示所述终端设备根据所述第三搜索空间组监测PDCCH。所述处理单元1102确定所述终端设备根据所述第三搜索空间组监测PDCCH时,所述收发单元1101向所述终端设备发送DCI,若所述DCI包括的所述第一指示信息为所述第一取值,所述第一指示信息指示所述终端设备根据所述第三搜索空间组监测PDCCH;若所述DCI包括的所述第一指示信息为所述第二取值,所述第一指示信息指示所述终端设备根据所述第一搜索空间组监测PDCCH。
一种示例中,所述收发单元1101还用于接收上行调度请求SR或随机接入信道RACH。所述处理单元1102确定所述终端设备根据第二搜索空间组监测PDCCH时,所述收发单元1101接收到所述终端设备发送的上行调度请求SR或随机接入信道RACH后,所述网络设备根据所述第一搜索空间组向所述终端设备发送PDCCH。
在一种可选的实施方式中,所述收发单元1101还用于发送高层配置信令,所述高层配置信令指示所述第一搜索空间组与所述第一时长相关。
在一种可选的实施方式中,所述高层配置信令包括所述第一搜索空间组的配置信息,所述第一搜索空间组的配置信息包括第一参数,所述第一参数指示所述第一时长;或者,所述高层配置信令包括所述第一搜索空间组的配置信息和所述第一时长。
需要说明的是,本申请实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。在本申请的实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
基于以上实施例,本申请实施例还提供了一种通信装置,参阅图12所示,通信装置1200可以包括收发器1201和处理器1202。可选的,所述通信装置1200中还可以包括存储器1203。其中,所述存储器1203可以设置于所述通信装置1200内部,还可以设置于所述通信装置1200外部。其中,所述处理器1202可以控制所述收发器1201接收和发送数据等。
具体地,所述处理器1202可以是中央处理器(central processing unit,CPU),网络处理器(network processor,NP)或者CPU和NP的组合。所述处理器1202还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit,ASIC),可编程逻辑器件(programmable logic device,PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device,CPLD),现场可编程逻辑门阵列(field-programmable gate array,FPGA),通用阵列逻辑(generic array logic,GAL)或其任意组合。
其中,所述收发器1201、所述处理器1202和所述存储器1203之间相互连接。可选的,所述收发器1201、所述处理器1202和所述存储器1203通过总线1704相互连接;所述总线1704可以是外设部件互连标准(Peripheral Component Interconnect,PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture,EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示,图12中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。
在一种可选的实施方式中,所述存储器1203,用于存放程序等。具体地,程序可以包括程序代码,该程序代码包括计算机操作指令。所述存储器1203可能包括RAM,也可能 还包括非易失性存储器(non-volatile memory),例如一个或多个磁盘存储器。所述处理器1202执行所述存储器1203所存放的应用程序,实现上述功能,从而实现通信装置1200的功能。
示例性地,该通信装置1200可以是上述实施例中的终端设备;还可以是上述实施例中的网络设备。
在一个实施例中,所述通信装置1200在实现本申请实施例中终端设备的功能时,收发器1201可以实现本申请实施例中的由终端设备执行的收发操作;处理器1202可以实现本申请实施例中由终端设备执行的除收发操作以外的其他操作。具体的相关具体描述可以参见本申请实施例中的相关描述,此处不再详细介绍。
在另一个实施例中,所述通信装置1200在实现本申请实施例中网络设备的功能时,收发器1201可以实现本申请实施例中的由网络设备执行的收发操作;处理器1202可以实现本申请实施例中由网络设备执行的除收发操作以外的其他操作。具体的相关具体描述可以参见本申请实施例中的相关描述,此处不再详细介绍。
基于以上实施例,本申请实施例提供了一种通信系统,该通信系统可以包括上述实施例涉及的终端设备和网络设备等。
本申请实施例还提供一种计算机可读存储介质,所述计算机可读存储介质用于存储计算机程序,该计算机程序被计算机执行时,所述计算机可以实现上述方法实施例提供的PDCCH监测的方法。
本申请实施例还提供一种计算机程序产品,所述计算机程序产品用于存储计算机程序,该计算机程序被计算机执行时,所述计算机可以实现上述方法实施例提供的PDCCH监测的方法。
本申请实施例还提供一种芯片,包括处理器,所述处理器与存储器耦合,用于调用所述存储器中的程序使得所述芯片实现上述方法实施例提供的PDCCH监测的方法。
本申请实施例还提供一种芯片,所述芯片与存储器耦合,所述芯片用于实现上述方法实施例提供的PDCCH监测的方法。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方 框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的范围。这样,倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (40)

  1. 一种物理下行控制信道PDCCH监测的方法,其特征在于,包括:
    终端设备被配置第一搜索空间组,其中,所述第一搜索空间组包括至少一个搜索空间;
    所述终端设备根据所述第一搜索空间组监测PDCCH时,若所述终端设备经过第一时长没有监测到PDCCH,所述终端设备停止监测PDCCH。
  2. 根据权利要求1所述的方法,其特征在于,包括:
    终端设备还被配置第二搜索空间组,其中,所述第二搜索空间组不包括任何搜索空间;
    所述终端设备停止监测PDCCH,包括:所述终端设备根据所述第二搜索空间组监测PDCCH。
  3. 根据权利要求2所述的方法,其特征在于,所述方法还包括:
    所述终端设备根据所述第二搜索空间组监测PDCCH经过第二时长后,所述终端设备根据所述第一搜索空间组监测PDCCH。
  4. 根据权利要求3所述的方法,其特征在于,所述第一时长是网络设备配置的,所述第二时长是根据所述第一时长确定的;或
    所述第二时长是所述网络设备配置的,所述第一时长是根据所述第二时长确定的。
  5. 根据权利要求3或4所述的方法,其特征在于,所述第一时长与所述第二时长正相关。
  6. 根据权利要求5所述的方法,其特征在于,所述第一时长与所述第二时长成正比。
  7. 根据权利要求1至6中任一项所述的方法,其特征在于,所述方法还包括:
    所述终端设备被配置第三搜索空间组,所述第三搜索空间组包括至少一个搜索空间,所述第一搜索空间组与所述第三搜索空间组不同;
    所述终端设备根据所述第三搜索空间组监测PDCCH时,若所述终端设备经过第三时长没有监测到PDCCH,所述终端设备根据所述第二搜索空间组监测PDCCH。
  8. 根据权利要求7所述的方法,其特征在于,所述方法还包括:
    所述终端设备根据所述第二搜索空间组监测PDCCH经过第四时长后,所述终端设备根据所述第三搜索空间组监测PDCCH。
  9. 根据权利要求8所述的方法,其特征在于,所述第三时长是所述网络设备配置的,所述第四时长是根据所述第三时长确定的;或
    所述第四时长是所述网络设备配置的,所述第三时长是根据所述第四时长确定的。
  10. 根据权利要求7至9中任一项所述的方法,其特征在于,所述终端设备根据所述第一搜索空间组监测PDCCH时,若所述终端设备接收到DCI且所述DCI包括的第一指示信息为第一取值,所述终端设备根据所述第一搜索空间组监测PDCCH;若所述终端设备接收到DCI且所述DCI包括的所述第一指示信息为第二取值,所述终端设备根据所述第三搜索空间组监测PDCCH;
    所述终端设备根据所述第三搜索空间组监测PDCCH时,若所述终端设备接收到DCI且所述DCI包括的所述第一指示信息为所述第一取值,所述终端设备根据所述第三搜索空间组监测PDCCH;若所述终端设备接收到DCI且所述DCI包括的所述第一指示信息为所述第二取值,所述终端设备根据所述第一搜索空间组监测PDCCH。
  11. 根据权利要求1至10中任一项所述的方法,其特征在于,所述终端设备根据所述第二搜索空间组监测PDCCH时,所述终端设备发送上行调度请求SR或随机接入信道RACH后,所述终端设备根据所述第一搜索空间组监测PDCCH。
  12. 根据权利要求1至11中任一项所述的方法,其特征在于,包括:所述终端设备接收网络设备发送的高层配置信令,所述高层配置信令指示所述第一搜索空间组与所述第一时长对应。
  13. 根据权利要求12所述的方法,其特征在于,所述高层配置信令指示第一搜索空间组的标识与所述第一时长对应。
  14. 根据权利要求2所述的方法,其特征在于,所述终端设备接收所述网络设备配置的第一信息,所述第一信息指示所述网络设备为所述终端设备配置了n个搜索空间组。
  15. 根据权利要求14所述的方法,其特征在于,所述第一信息指示所述网络设备为所述终端设备配置了n个搜索空间组,包括以下一项或多项:
    所述第一信息包括所述网络设备为所述终端设备配置的搜索空间组的个数n;或
    所述第一信息包括所述网络设备为所述终端设备配置的搜索空间组的索引值范围0到n-1;或
    所述第一信息包括所述网络设备为所述终端设备配置的搜索空间组的索引值的最大值n-1。
  16. 根据权利要求15所述的方法,其特征在于,所述n个搜索空间组中的m个搜索空间组具有关联的搜索空间,所述n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;
    所述第一搜索空间组属于所述m个搜索空间组,所述第二搜索空间组属于所述(n-m)个搜索空间组。
  17. 根据权利要求2所述的方法,其特征在于,所述终端设备被配置第一搜索空间,所述第一搜索空间与第一搜索空间组关联,所述第一搜索空间组对应第一索引;
    若所述第一索引大于第二索引,则所述终端设备确定被配置所述第二搜索空间组,所述第二搜索空间组对应所述第二索引。
  18. 根据权利要求17所述的方法,其特征在于,若所述第一索引小于第四索引,且所述终端设备被配置的所有搜索空间均未与第四搜索空间组关联,所述终端设备确定未被配置第四搜索空间组,其中,所述第四搜索空间组对应所述第四索引。
  19. 一种物理下行控制信道PDCCH监测的方法,其特征在于,包括:
    网络设备为终端设备配置第一搜索空间组,其中,所述第一搜索空间组包括至少一个搜索空间;
    所述网络设备为所述终端设备配置第一预设时长,所述第一预设时长为第一时长或用于确定所述第一时长,其中,所述第一时长为所述终端设备停止监测PDCCH前,所述终端设备根据所述第一搜索空间组没有监测到PDCCH的最大时长。
  20. 根据权利要求19所述的方法,其特征在于,所述方法还包括:所述网络设备确定所述终端设备根据所述第一搜索空间组监测PDCCH时,若所述网络设备经过所述第一时长没有发送PDCCH,所述网络设备确定所述终端设备停止监测PDCCH,并停止发送PDCCH。
  21. 根据权利要求19所述的方法,其特征在于,所述方法还包括:
    所述网络设备还为所述终端设备配置第二搜索空间组,其中,所述第二搜索空间组不包括任何搜索空间;
    所述第一时长为所述终端设备停止监测PDCCH前,所述终端设备根据所述第一搜索空间组没有监测到PDCCH的最大时长,包括:所述第一时长为所述终端设备根据所述第二搜索空间组监测PDCCH前,所述终端设备根据所述第一搜索空间组没有监测到PDCCH的最大时长。
  22. 根据权利要求21所述的方法,其特征在于,所述方法还包括:所述第一预设时长为所述第一时长,第二时长是根据所述第一时长确定的;或所述第一预设时长用于确定所述第一时长,所述第一预设时长为所述第二时长;
    其中,所述第二时长为所述终端设备根据所述第一搜索空间组经过所述第一时长没有监测到PDCCH后,所述终端设备根据所述第二搜索空间组监测PDCCH的最大时长。
  23. 根据权利要求22所述的方法,其特征在于,所述第一时长与所述第二时长正相关。
  24. 根据权利要求22或23所述的方法,其特征在于,所述第一时长与所述第二时长成正比。
  25. 根据权利要求19至24中任一项所述的方法,其特征在于,所述方法还包括:
    所述网络设备还为所述终端设备配置第三搜索空间组,其中,所述第三搜索空间组包括至少一个搜索空间,所述第一搜索空间组与所述第三搜索空间组不同;
    所述网络设备为所述终端设备配置第二预设时长,所述第二预设时长为第三时长或用于确定所述第三时长,其中,所述第三时长为所述终端设备停止监测PDCCH前,所述终端设备根据所述第三搜索空间组没有监测到PDCCH的最大时长。
  26. 根据权利要求25所述的方法,其特征在于,所述方法还包括:所述网络设备确定所述终端设备根据第三搜索空间组监测PDCCH时,若所述网络设备经过所述第三时长没有发送PDCCH,所述网络设备确定所述终端设备根据所述第二搜索空间组监测PDCCH,并停止发送PDCCH。
  27. 根据权利要求25至26中任一项所述的方法,其特征在于,所述网络设备确定所述终端设备根据所述第一搜索空间组监测PDCCH时,所述网络设备向所述终端设备发送DCI,若所述DCI包括的第一指示信息为第一取值,所述第一指示信息指示所述终端设备根据所述第一搜索空间组监测PDCCH;若所述DCI包括的所述第一指示信息为第二取值,所述第一指示信息指示所述终端设备根据所述第三搜索空间组监测PDCCH;
    所述网络设备确定所述终端设备根据所述第三搜索空间组监测PDCCH时,所述网络设备向所述终端设备发送DCI,若所述DCI包括的所述第一指示信息为所述第一取值,所述第一指示信息指示所述终端设备根据所述第三搜索空间组监测PDCCH;若所述DCI包括的所述第一指示信息为所述第二取值,所述第一指示信息指示所述终端设备根据所述第一搜索空间组监测PDCCH。
  28. 根据权利要求19至27中任一项所述的方法,其特征在于,所述网络设备确定所述终端设备根据第二搜索空间组监测PDCCH时,所述网络设备接收到所述终端设备发送的上行调度请求SR或随机接入信道RACH后,所述网络设备根据所述第一搜索空间组向所述终端设备发送PDCCH。
  29. 根据权利要求19至28中任一项所述的方法,其特征在于,包括:所述网络设备 发送高层配置信令,所述高层配置信令指示所述第一搜索空间组与所述第一时长对应。
  30. 根据权利要求29所述的方法,其特征在于,所述高层配置信令指示第一搜索空间组的标识与所述第一时长对应。
  31. 根据权利要求21所述的方法,其特征在于,所述网络设备为所述终端设备配置第一信息,所述第一信息指示所述网络设备为所述终端设备配置了n个搜索空间组。
  32. 根据权利要求31所述的方法,其特征在于,所述第一信息指示所述网络设备为所述终端设备配置了n个搜索空间组,包括以下一项或多项:
    所述第一信息包括所述网络设备为所述终端设备配置的搜索空间组的个数n;或
    所述第一信息包括所述网络设备为所述终端设备配置的搜索空间组的索引值范围0到n-1;或
    所述第一信息包括所述网络设备为所述终端设备配置的搜索空间组的索引值的最大值n-1。
  33. 根据权利要求32所述的方法,其特征在于,所述n个搜索空间组中的m个搜索空间组具有关联的搜索空间,所述n个搜索空间组中剩余的(n-m)个搜索空间组不具有关联的搜索空间;
    所述第一搜索空间组属于所述m个搜索空间组,所述第二搜索空间组属于所述(n-m)个搜索空间组。
  34. 根据权利要求21所述的方法,其特征在于,网络设备为终端设备配置第一搜索空间,所述第一搜索空间与第一搜索空间组关联,所述第一搜索空间组对应第一索引;
    若所述第一索引大于第二索引,则所述网络设备确定所述终端设备被配置所述第二搜索空间组,所述第二搜索空间组对应所述第二索引。
  35. 根据权利要求34所述的方法,其特征在于,所述方法还包括,若所述第一索引小于第四索引,且所述终端设备被配置的所有搜索空间均未与第四搜索空间组关联,所述终端设备确定未被配置第四搜索空间组,其中,所述第四搜索空间组对应所述第四索引。
  36. 一种终端设备,其特征在于,包括:一个或多个处理器和一个或多个存储器;
    所述一个或多个存储器与所述一个或多个处理器耦合,所述一个或多个存储器用于存储计算机程序代码,所述计算机程序代码包括计算机指令,当所述一个或多个处理器执行所述计算机指令时,使得所述终端设备执行如权利要求1-18任一项所述的方法。
  37. 一种网络设备,其特征在于,包括:一个或多个处理器和一个或多个存储器;
    所述一个或多个存储器与所述一个或多个处理器耦合,所述一个或多个存储器用于存储计算机程序代码,所述计算机程序代码包括计算机指令,当所述一个或多个处理器执行所述计算机指令时,使得所述网络设备执行如权利要求19-35任一项所述的方法。
  38. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有计算机可执行指令,所述计算机可执行指令在被所述计算机调用时用于使所述计算机执行上述权利要求1-18中任一项所述的方法,或者执行上述权利要求19-35中任一项所述的方法。
  39. 一种包含指令的计算机程序产品,其特征在于,当所述计算机程序产品在计算机上运行时,使得所述计算机如执行权利要求1-18中任一项所述的方法,或者执行如权利要求19-35中任一项所述的方法。
  40. 一种芯片,其特征在于,所述芯片与存储器耦合,用于读取并执行所述存储器中 存储的程序指令,以实现如权利要求1-18中任一项所述的方法,或者实现如述权利要求19-35中任一项所述的方法。
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