Channel monitoring method and device, terminal device, and network device

Abstract

To provide a terminal device, a channel monitoring method, and a system that select a PDCCH search space to be monitored on the basis of traffic scheduling, select a physical downlink control channel (PDCCH) search space with a long period when traffic is low or non-existent, and achieve power consumption savings for PDCCH monitoring.SOLUTION: In a communication system, a channel monitoring method includes receiving first search space configuration information and second search space configuration information from a network device by a terminal device, and determining that downlink control channel monitoring based on the first search space configuration information or the second search space configuration information is performed on the basis of the first timer and / or first control information by the terminal device.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The embodiments of the present application relate to the field of mobile communication technology, and in particular to a channel monitoring method and device, a terminal device, and a network device. [Background technology]

[0002] 5th Generation (5G:5 th The study and standardization of 5G (Fast Stream Generation) technology has enabled wideband wireless mobile communications to have higher peak rates, larger transmission bandwidths, and lower transmission delays. For example, the operating bandwidth of 5G terminal devices is about 100 MHz to several hundred MHz, the data transmission rate is at the Gbps level, and the transmission delay has been reduced to the ms level.

[0003] However, when it comes to the terminal device, it will cause problems in implementation and specific use. For example, due to the radio frequency and rapid baseband processing of the wideband terminal device, the power consumption of the terminal device will be larger than that of the traditional wireless communication system. This will affect the standby time and usage period of the 5G terminal device, and even affect the battery life of the terminal device.

[0004] In addition, when the terminal device is in a Radio Resource Control (RRC) connected state, a large amount of power is wasted. For example, in the RRC connected state, the terminal device needs to periodically monitor a physical downlink control channel (PDCCH) based on the arrangement of the physical downlink control channel (PDCCH) search space. However, only in a small number of PDCCH transmission slots, the network starts scheduling for the terminal device, but in a large number of other slots, the network does not schedule the terminal device, that is, does not transmit PDCCH for the terminal device.

[0005] Therefore, how to optimize the PDCCH monitoring of the terminal device and reduce the power consumption in the PDCCH receiving process of the terminal device is a problem to be solved. Summary of the Invention [Problem to be solved by the invention]

[0006] The embodiments of the present application provide a channel monitoring method and apparatus, a terminal device and a network device. [Means for solving the problem]

[0007] The channel monitoring method provided in the embodiment of the present application includes: A terminal device receives first search space configuration information and second search space configuration information from a network device; The method includes the terminal device determining, based on a first timer and / or first control information, to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information.

[0008] The channel monitoring method provided in the embodiment of the present application includes: The method includes a network device transmitting first search space configuration information and second search space configuration information to a terminal device, wherein the first search space configuration information and the second search space configuration information are for the terminal device to determine whether to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information based on a first timer and / or first control information.

[0009] The channel monitoring device provided in the embodiment of the present application includes: A first receiving unit configured to receive first search space configuration information and second search space configuration information from a network device; and a monitoring unit configured to determine, based on a first timer and / or first control information, to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information.

[0010] The channel monitoring device provided in the embodiment of the present application includes: The present invention comprises a first transmission unit configured to transmit first search space configuration information and second search space configuration information to a terminal device, the first search space configuration information and the second search space configuration information being intended for the terminal device to determine, based on a first timer and / or first control information, whether to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information.

[0011] The terminal device provided in an embodiment of the present application comprises a memory configured to store a computer program, and a processor configured to call and execute the computer program stored in the memory to perform the above-mentioned channel monitoring method.

[0012] The network device provided in an embodiment of the present application comprises a memory configured to store a computer program, and a processor configured to call and execute the computer program stored in the memory to perform the above-mentioned channel monitoring method.

[0013] The chip provided in the embodiment of the present application is configured to realize the above channel monitoring method.

[0014] Specifically, the chip includes a processor configured to retrieve and execute a computer program from a memory to cause a device in which the chip is mounted to perform the channel monitoring method.

[0015] A computer-readable storage medium provided in an embodiment of the present application stores a computer program for causing a computer to execute the above channel monitoring method.

[0016] A computer program product provided in an embodiment of the present application includes computer program instructions for causing a computer to execute the above channel monitoring method.

[0017] A computer program provided in the embodiment of the present application is for causing a computer to execute the above channel monitoring method. Effect of the Invention

[0018] According to the above technical solution, it is determined to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information according to a first timer and / or first control information, so that the terminal device selects a PDCCH search space to be monitored based on traffic scheduling, and when traffic is low or non-existent, the terminal device selects a PDCCH search space with a long period, thereby realizing power saving of PDCCH monitoring. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic diagram illustrating a communication system architecture according to an embodiment of the present application. [Diagram 2] 1 is a first flow chart illustrating a channel monitoring method according to an embodiment of the present application. [Diagram 3] 2 is a second flowchart illustrating a channel monitoring method according to an embodiment of the present application. [Figure 4] FIG. 1 is a first schematic diagram illustrating PDCCH search space monitoring according to an embodiment of the present application. [Diagram 5] FIG. 2 is a second schematic diagram showing PDCCH search space monitoring according to an embodiment of the present application. [Figure 6] FIG. 1 is a first schematic diagram illustrating the structure of a channel monitoring device according to an embodiment of the present application; [Figure 7] FIG. 2 is a second schematic diagram illustrating the structure of a channel monitoring device according to an embodiment of the present application; [Figure 8] 1 is a schematic diagram illustrating the structure of a communication device according to an embodiment of the present application; [Figure 9] FIG. 2 is a schematic diagram showing the structure of a chip according to an embodiment of the present application. [Figure 10] 1 is a block diagram illustrating a communication system according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The drawings herein are included to provide a further understanding of the invention and are incorporated in and made a part of this specification. The schematic embodiments of the invention and the description thereof are used to illustrate the invention but are not intended to unduly limit it.

[0021] Hereinafter, the technical solutions in the embodiments of the present application will be described with reference to the drawings in the embodiments of the present application. Of course, the described embodiments are not all the embodiments, but only some of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can obtain without creative efforts are included in the scope of protection of the present application.

[0022] The technical solutions of the embodiments of the present application may be applied to various communication systems, such as a Global System of Mobile Communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, or a 5G system.

[0023] Illustratively, a communication system 100 applied to an embodiment of the present application is as shown in FIG. 1. The communication system 100 may include a network device 110. The network device 110 may be a device that communicates with a terminal 120 (also called a communication terminal device or terminal device). The network device 110 provides communication coverage for a specific geographical area and can communicate with a terminal device located within the coverage. Optionally, the network device 110 may be a base station (Base Transceiver Station: BTS) in a GSM system or a CDMA system, a base station (NodeB: NB) in a WCDMA system, an evolved base station (Evolutional NodeB: eNB or eNodeB) in an LTE system, and even a radio controller in a Cloud Radio Access Network (CRAN). Alternatively, the network device may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0024] The communication system 100 further comprises at least one terminal device 120 located within the coverage area of ​​the network device 110. A "terminal device" as used herein includes, but is not limited to, a device connected via a wired line such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable, and / or a device connected via another data connection / network, and / or a device connected via a wireless interface such as a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or a device configured to receive / transmit communication signals at another terminal, and / or an Internet of Things (IoT) device. A terminal configured to communicate via a wireless communication interface may be referred to as a "wireless communication terminal", a "wireless terminal", or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones, Personal Communications System (PCS) terminals that may combine cellular radiotelephone with data processing, facsimile and data communication capabilities, wireless telephones, paging devices, PDAs that include Internet / intranet access, web browsers, notepads, calendars and / or Global Positioning System (GPS) receivers, and other electronic devices that include conventional laptop and / or palmtop receivers or radiotelephone transceivers. A terminal may be an access terminal, User Equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal device, wireless communication device, user agent or user equipment.The access terminal device may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved PLMN, etc.

[0025] Optionally, the terminal devices 120 can perform device-to-device (D2D) communication with each other.

[0026] Optionally, a 5G system or a 5G network may be referred to as a New Radio (NR) system or a NR network.

[0027] 1 shows one network device and two terminal devices as an example. Optionally, the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices, and the embodiment of the present invention is not limited thereto.

[0028] Optionally, the communication system 100 may comprise other network entities, such as a network controller, a mobility management entity, etc., and the present invention is not limited thereto.

[0029] It should be understood that the device having a communication function in the network / system of the embodiment of the present application may be called a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, and detailed description is omitted here. The communication device may include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., and the embodiment of the present application is not limited thereto.

[0030] It should be understood that the terms "system" and "network" may be used interchangeably herein. In this specification, the term "and / or" is used to describe a relationship between related objects, and indicates that three relationships exist. For example, A and / or B indicates three cases: only A exists, A and B exist simultaneously, and only B exists. In this specification, the character " / " generally indicates that the related objects before and after it are in an "or" relationship.

[0031] 2 is a first flow chart illustrating a channel monitoring method according to an embodiment of the present application. As shown in FIG. 2, the channel monitoring method includes the following steps:

[0032] In step 201, the terminal device receives first search space configuration information and second search space configuration information from the network device.

[0033] In the embodiment of the present application, the terminal device may be any device that can communicate with a network device, such as a mobile phone, a tablet, an in-vehicle terminal device, etc.

[0034] In an embodiment of the present application, the network device is a base station such as a gNB in ​​5G, an eNB in ​​LTE, etc.

[0035] In the embodiments of the present application, the search space may be expressed as a PDCCH search space, and the PDCCH search space may be understood as a search space.

[0036] In an embodiment of the present application, the first search space configuration information includes configuration information of one or more search spaces, and the second search space configuration information includes configuration information of one or more search spaces, where the configuration information of one search space includes the following information:

[0037] search ID: Indicates the search space identifier.

[0038] controlResourceSetId: indicates the ID of the configuration information of the control resource set related to the search space, which configures the time-frequency resource of the PDCCH search space.

[0039] Monitoring slot period and offset within the period: Currently, the periods supported by NR include 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 160, 320, 640, 1280, and 2560 slots.

[0040] duration: indicates the number of slots continuously monitored within a PDCCH search space period.

[0041] monitoringSymbolsWithinSlot: Indicates which symbols within the PDCCH monitoring slot are used for PDCCH monitoring.

[0042] PDCCH candidates: indicates configuration information of PDCCH candidates.

[0043] Search space type: Indicates whether the PDCCH search space is a common search space or a UE-specific search space.

[0044] In step 202, the terminal device determines, based on a first timer and / or first control information, to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information.

[0045] In an embodiment of the present application, the configuration information of the first timer may be configured by the network device or may be predefined by a standard. Furthermore, the configuration information of the first timer includes first time length information of the first timer. For example, the value of the first time length information may be a time length, or may be a number of subframes, slots, or PDCCH search space periods. Note that, the counting of the first timer may be a counting of time, or may be a counting of subframes, slots, or PDCCH search space periods.

[0046] In one embodiment, the configuration information of the first timer is configured by the network device. The terminal device also needs to receive the configuration information of the first timer from the network device. Then, the terminal device determines to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information based on the first timer.

[0047] In an embodiment of the present application, the first timer and the first search space configuration information are associated with each other. In this case, the terminal device executes the first timer and performs downlink control channel monitoring based on the search space corresponding to the first search space configuration information. When the terminal device detects a downlink control channel for the terminal device at any downlink control channel monitoring time, the terminal device restarts the first timer. When the terminal device does not detect a downlink control channel for the terminal device, the first timer continues to time. When the first timer times out, the terminal device switches to a search space corresponding to the second search space configuration information and performs downlink control channel monitoring. For example, the first timer is timed in a downlink control channel monitoring period, and when the terminal device does not detect a downlink control channel for the terminal device at one downlink control channel monitoring time, the count of the first timer is increased.

[0048] For example, when the terminal device performs PDCCH monitoring based on a PDCCH search space corresponding to first search space configuration information, the terminal device restarts the first timer every time the terminal device detects a PDCCH for the terminal device. When the terminal device does not detect a PDCCH for the terminal device in the PDCCH search space corresponding to the first search space configuration information, the count of the first timer is incremented. When the first timer times out, the terminal device switches to a PDCCH search space corresponding to second search space configuration information and performs PDCCH monitoring.

[0049] The embodiment of the present application is not limited to the above technical solution, and the first timer may be associated with the second search space configuration information. In this case, similar to the first search space configuration information, the terminal device executes the first timer and performs downlink control channel monitoring based on the search space corresponding to the second search space configuration information. When the terminal device detects a downlink control channel for the terminal device, it restarts the first timer. When the terminal device does not detect a downlink control channel for the terminal device, the first timer continues to time. When the first timer times out, the terminal device switches to a search space corresponding to the first search space configuration information and performs downlink control channel monitoring.

[0050] The above technical solution of the embodiment of the present application determines whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information based on a first timer. Not limited to this, the embodiment of the present application can also determine whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information based on the first control information. In this case, the terminal device receives first control information from the network device, and determines to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information based on the first control information. Here, the first control information is downlink control information (DCI) or media access control control element (MAC CE).

[0051] In one embodiment, after receiving the first control information, the terminal device immediately performs downlink control channel monitoring in a search space corresponding to target search space configuration information indicated by the first control information, where the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

[0052] In another embodiment, when the terminal device receives the first control information, after a second time period has elapsed, the terminal device performs downlink control channel monitoring in a search space corresponding to target search space configuration information indicated by the first control information. Here, the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information. Here, the second time period is configured by the network device. Or, the second time period is predefined.

[0053] In the technical solution of the embodiment of the present application, it can be determined based on a first timer whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. It can also be determined based on the first control information whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. It can also be determined based on the first timer and the first control information whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. Thus, the terminal device selects a PDCCH search space to be monitored based on traffic scheduling. Therefore, when traffic is low or absent, the terminal device selects a PDCCH search space with a long period to realize power consumption saving of PDCCH monitoring.

[0054] 3 is a second flow chart showing a channel monitoring method according to an embodiment of the present application. As shown in FIG. 3, the channel monitoring method includes the following steps:

[0055] In step 301, a network device transmits first search space configuration information and second search space configuration information to a terminal device, and the first search space configuration information and the second search space configuration information are for the terminal device to decide, based on a first timer and / or first control information, whether to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information.

[0056] In an embodiment of the present application, the network device is a base station such as a gNB in ​​5G, an eNB in ​​LTE, etc.

[0057] In the embodiment of the present application, the terminal device may be any device that can communicate with a network device, such as a mobile phone, a tablet, an in-vehicle terminal device, etc.

[0058] In the embodiments of the present application, the search space may be expressed as a PDCCH search space, and the PDCCH search space may be understood as a search space.

[0059] In an embodiment of the present application, the first search space configuration information includes one or more search space configuration information, and the second search space configuration information includes one or more search space configuration information. Here, the information included in one search space configuration information can be understood with reference to the description of the terminal device.

[0060] In an embodiment of the present application, the configuration information of the first timer may be configured by the network device or may be predefined by a standard. Furthermore, the configuration information of the first timer includes first time length information of the first timer. For example, the value of the first time length information may be a time length, or may be a number of subframes, slots, or PDCCH search space periods. Note that, the counting of the first timer may be a counting of time, or may be a counting of subframes, slots, or PDCCH search space periods.

[0061] In one embodiment, the configuration information of the first timer is configured by the network device. The network device needs to transmit the configuration information of the first timer to the terminal device. Then, the terminal device determines to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information based on the first timer.

[0062] In an embodiment of the present application, the first timer and the first search space configuration information are associated with each other. In this case, the terminal device executes the first timer and performs downlink control channel monitoring based on the search space corresponding to the first search space configuration information. When the terminal device detects a downlink control channel for the terminal device at any downlink control channel monitoring time, the terminal device restarts the first timer. When the terminal device does not detect a downlink control channel for the terminal device, the first timer continues to time. When the first timer times out, the terminal device switches to a search space corresponding to the second search space configuration information and performs downlink control channel monitoring. For example, the first timer is timed in a downlink control channel monitoring period, and when the terminal device does not detect a downlink control channel for the terminal device at one downlink control channel monitoring time, the count of the first timer is increased.

[0063] The embodiment of the present application is not limited to the above technical solution, and the first timer may be associated with the second search space configuration information. In this case, similar to the first search space configuration information, the terminal device executes the first timer and performs downlink control channel monitoring based on the search space corresponding to the second search space configuration information. When the terminal device detects a downlink control channel for the terminal device, it restarts the first timer. When the terminal device does not detect a downlink control channel for the terminal device, the first timer continues to time. When the first timer times out, the terminal device switches to a search space corresponding to the first search space configuration information and performs downlink control channel monitoring.

[0064] The above technical solution of the embodiment of the present application determines, based on a first timer, whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. Not limited to this, the embodiment of the present application can also determine, based on first control information, whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. In this case, the network device transmits first control information to the terminal device. The first control information is for determining that the terminal device performs downlink control channel monitoring based on the first search space configuration information or the second search space configuration information. Here, the first control information is DCI or MAC CE.

[0065] In one embodiment, after receiving the first control information, the terminal device immediately performs downlink control channel monitoring in a search space corresponding to target search space configuration information indicated by the first control information, where the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

[0066] In another embodiment, when the terminal device receives the first control information, after a second time period has elapsed, the terminal device performs downlink control channel monitoring in a search space corresponding to target search space configuration information indicated by the first control information. Here, the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information. Here, the second time period is configured by the network device. Or, the second time period is predefined.

[0067] In the technical solution of the embodiment of the present application, it can be determined based on a first timer whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. It can also be determined based on the first control information whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. It can also be determined based on the first timer and the first control information whether to perform downlink control monitoring based on the first search space configuration information or to perform downlink control channel monitoring based on the second search space configuration information. Thus, the terminal device selects a PDCCH search space to be monitored based on traffic scheduling. Therefore, when traffic is low or absent, the terminal device selects a PDCCH search space with a long period to realize power consumption saving of PDCCH monitoring.

[0068] Hereinafter, the technical solutions of the embodiments of the present application will be described with reference to specific application examples. In the following embodiments, the first search space configuration information is referred to as a first PDCCH search space configuration, the second search space configuration information is referred to as a second PDCCH search space configuration, and the first timer is referred to as a first timer.

[0069] Application example 1: PDCCH search space monitoring based on the first timer The network device transmits two PDCCH search space configurations, a first PDCCH search space configuration and a second PDCCH search space configuration, to the terminal device. Here, the first PDCCH search space configuration has a short PDCCH search space period and is applied when the traffic of the terminal device arrives densely. The second PDCCH search space configuration has a long PDCCH search space period and is applied when the traffic of the terminal device arrives sparsely. When the traffic of the terminal device is low or there is no traffic within a short period of time, the terminal device can monitor the PDCCH at a long time interval by using the second PDCCH search space configuration. In the period between two adjacent PDCCH search spaces, the terminal device enters a sleep state for a while, which further contributes to realizing energy saving of the terminal device. The first PDCCH search space configuration or the second PDCCH search space configuration may each include one or more PDCCH search space configuration information. The number of PDCCH search space configuration information included in both may be the same or different. For example, the first PDCCH search space configuration includes configuration information of PDCCH search space 1, PDCCH search space 2, and PDCCH search space 3, and the second PDCCH search space configuration includes only configuration information of PDCCH search space 4.

[0070] The network device may transmit configuration information of the first timer to the terminal device, which includes time length information of the first timer. The terminal device determines to perform PDCCH monitoring based on the first PDCCH search space configuration or the second PDCCH search space configuration based on the first timer. Specifically, when the terminal device performs PDCCH monitoring based on the PDCCH search space corresponding to the first PDCCH search space configuration, the terminal device restarts the first timer every time it detects a PDCCH for the terminal device. When the terminal device does not detect a PDCCH for the terminal device in the corresponding PDCCH search space, the count of the first timer is increased. When the first timer times out, the terminal device switches to a PDCCH search space corresponding to a second PDCCH search space configuration to perform PDCCH monitoring.

[0071] Here, the count of the first timer may be a count of time, or may be a count of a subframe, or a slot, or a PDCCH search space period. Note that, the value of the first timer may be a time length, or may be the number of subframes, slots, or PDCCH search space periods. The configuration information of the first timer may be pre-configured. In this case, the network device does not need to transmit the configuration information of the first timer to the terminal device.

[0072] It should be noted that the PDCCH for the terminal device is a PDCCH scrambled with the Cell Radio Network Temporary Identifier (C-RNTI) of the terminal device.

[0073] As shown in FIG. 4, the terminal device performs PDCCH monitoring based on a PDCCH search space corresponding to the first PDCCH search space configuration. A PDCCH is detected at the first PDCCH monitoring time. In this case, the first timer is restarted. A PDCCH is not detected at the second PDCCH monitoring time. In this case, the count of the first timer is a value obtained by adding 1 to the initial value. A PDCCH is detected at the third PDCCH monitoring time. In this case, the first timer is restarted. A PDCCH is not detected at the fourth PDCCH. In this case, the count of the first timer is a value obtained by adding 1 to the initial value. A PDCCH is not detected at the fifth PDCCH monitoring time. In this case, the count of the first timer is a value obtained by adding 2 to the initial value. By analogy in this way, a PDCCH is still not detected at the n-th PDCCH monitoring time. In this case, the count of the first timer is a value obtained by adding n to the initial value. When the counting of the first timer times out, the terminal device switches to a PDCCH search space corresponding to the second PDCCH search space configuration and performs PDCCH monitoring.

[0074] Application Example 2: PDCCH search space monitoring based on the first timer and the first control information In order to flexibly switch the terminal device among different PDCCH search spaces, the above application example 1 can be further combined with a DCI or MAC CE controlled PDCCH search space configuration switching mechanism.

[0075] Specifically, when the network wants to switch to a PDCCH search space configuration of the terminal device, the network sends DCI or MAC CE signaling to the terminal device, which indicates a target PDCCH search space configuration for switching. After receiving the signaling, the terminal device can immediately perform switching, or performs switching after an effective period based on the effective period. The effective period is predefined or notified to the terminal device by RRC signaling.

[0076] Before implementing the above technical solution, the network configures various PDCCH search space configurations for the terminal, and numbers them respectively. When the target PDCCH search space configuration of switching is indicated by DCI or MAC CE, the number of the target PDCCH search space configuration can be indicated.

[0077] Application example 3: PDCCH search space monitoring based on the first control information Referring to FIG. 5, the terminal device performs PDCCH monitoring based on a PDCCH search space corresponding to a first PDCCH search space configuration. A PDCCH is detected at a first PDCCH monitoring time. A PDCCH is not detected at a second PDCCH monitoring time. A PDCCH is detected at a third PDCCH monitoring time. A PDCCH is not detected at a fourth PDCCH monitoring time. A PDCCH is not detected at a fifth PDCCH monitoring time. By this analogy, PDCCH monitoring is performed at each PDCCH monitoring time, and continues until the first control information is received at the n-th PDCCH monitoring time. The terminal device switches to a PDCCH search space corresponding to a second PDCCH search space configuration based on an instruction from the first control information, and performs PDCCH monitoring.

[0078] FIG. 6 is a first schematic diagram showing the structure of a channel monitoring device according to an embodiment of the present application. As shown in FIG. 6, the channel monitoring device includes: A first receiving unit 601 configured to receive first search space configuration information and second search space configuration information from a network device; and a monitoring unit 602 configured to determine, based on a first timer and / or first control information, to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information.

[0079] In one embodiment, the configuration information of the first timer is configured by the network device; or The configuration information of the first timer is predefined.

[0080] In one embodiment, the configuration information of the first timer includes first time length information of the first timer.

[0081] In one embodiment, the monitoring unit 602 is configured to execute the first timer, perform downlink control channel monitoring according to the search space corresponding to the first search space configuration information, restart the first timer when the downlink control channel for the terminal device is detected, continue to count the first timer when the downlink control channel for the terminal device is not detected at any downlink control channel monitoring time, and switch to the search space corresponding to the second search space configuration information to perform downlink control channel monitoring when the first timer times out. If the downlink control channel for the terminal device is not detected at one downlink control channel monitoring time, the count of the first timer is incremented.

[0082] In one embodiment, the apparatus comprises: The second receiving unit 603 is configured to receive first control information from the network device, where the first control information is a DCI or a MAC CE.

[0083] In one embodiment, the monitoring unit 602 is configured to perform downlink control channel monitoring in a search space corresponding to target search space configuration information indicated by the first control information immediately after the second receiving unit receives the first control information, and the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

[0084] In one embodiment, when the second receiving unit receives the first control information, the monitoring unit 602 is configured to perform downlink control channel monitoring in a search space corresponding to the target search space configuration information indicated by the first control information after a second time period has elapsed, and the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

[0085] In one embodiment, the second amount of time is configured by the network device; or The second amount of time is predefined.

[0086] In one embodiment, the first search space configuration information or the second search space configuration information includes configuration information of one or more search spaces.

[0087] It should be understood by those skilled in the art that the description related to the above channel monitoring apparatus of the embodiment of the present application can be understood with reference to the description related to the channel monitoring method of the embodiment of the present application.

[0088] FIG. 7 is a second schematic diagram showing the structure of a channel monitoring device according to an embodiment of the present application. As shown in FIG. 7, the channel monitoring device includes: The first transmitting unit 701 is configured to transmit first search space configuration information and second search space configuration information to a terminal device, the first search space configuration information and the second search space configuration information being for the terminal device to determine, based on a first timer and / or first control information, whether to perform downlink control channel monitoring based on the first search space configuration information or the second search space configuration information.

[0089] In one embodiment, the configuration information of the first timer is configured by the network device; or The configuration information of the first timer is predefined.

[0090] In one embodiment, the configuration information of the first timer includes first time length information of the first timer.

[0091] In one embodiment, the apparatus comprises: The wireless terminal further comprises a second transmitting unit 702 configured to transmit the first control information to the terminal device, where the first control information is DCI or MAC CE.

[0092] In one embodiment, the first search space configuration information or the second search space configuration information includes configuration information of one or more search spaces.

[0093] It should be understood by those skilled in the art that the description related to the above channel monitoring apparatus of the embodiment of the present application can be understood with reference to the description related to the channel monitoring method of the embodiment of the present application.

[0094] 8 is a schematic diagram showing the structure of a communication device 600 according to an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 600 shown in FIG. 8 includes a processor 610, which calls and executes a computer program from a memory to realize the method in the embodiment of the present application.

[0095] Optionally, as shown in Fig. 8, the communication device 600 may further include a memory 620. Here, the processor 610 calls and executes a computer program from the memory 620 to realize the method in the embodiment of the present application.

[0096] Here, the memory 620 may be a separate device independent of the processor 610 or may be integrated into the processor 610 .

[0097] Optionally, as shown in Fig. 8, the communication device 600 may further include a transceiver 630. The processor 610 may control the transceiver 630 to communicate with other devices, in particular to transmit information or data to other devices or to receive information or data from other devices.

[0098] Here, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna. The number of antennas may be one or more.

[0099] Optionally, the communication device 600 may specifically be a network device of the embodiments of the present application, and the communication device 600 may implement the processes implemented by the network device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0100] Optionally, the communication device 600 may specifically be a mobile terminal / terminal device of the embodiments of the present application, and the communication device 600 may implement the processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0101] 9 is a schematic diagram showing the structure of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710. The processor 710 calls and executes a computer program from a memory to realize the method in the embodiment of the present application.

[0102] Optionally, as shown in Figure 9, the chip 700 may further include a memory 720. Here, the processor 710 calls and executes a computer program from the memory 720 to realize the method in the embodiment of the present application.

[0103] Here, the memory 720 may be a separate device independent of the processor 710 or may be integrated into the processor 710 .

[0104] Optionally, the chip 700 may further include an input interface 730. Here, the processor 710 can control the input interface 730 to communicate with other devices or chips. In particular, the chip 700 can obtain information or data from other devices or chips.

[0105] Optionally, the chip 700 may further include an output interface 740, where the processor 710 may control the output interface 740 to communicate with other devices or chips, in particular to output information or data to other devices or chips.

[0106] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can realize the process implemented by the network device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0107] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can realize the process implemented by the mobile terminal / terminal device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0108] It should be understood that the chips referred to in the embodiments of this application may also be referred to as a system on a chip, a system chip, a chip system, or a system with any part mounted on a chip.

[0109] 10 is a block diagram showing a communication system 900 according to an embodiment of the present application. As shown in FIG. 10, the communication system 900 includes a terminal device 910 and a network device 920.

[0110] Here, the terminal device 910 is used to realize the functions realized by the terminal device in the above method, and the network device 920 is used to realize the functions realized by the network device in the above method, and for the sake of brevity, detailed description is omitted here.

[0111] It should be understood that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, it should be understood that each step in the above method embodiments can be completed by an instruction in the form of a hardware integrated logic circuit or software in the processor. The processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. Each method, step, and logic block diagram disclosed in the embodiments of the present application can be realized or executed. The general-purpose processor may be a microprocessor, and the processor may be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application are combined and shown to be completed by a hardware decoding processor, or to be completed by executing a combination of hardware and software modules in the decoding processor. The software module may be present in a conventional storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the process of the above method together with its hardware.

[0112] It should be understood that the memory in the embodiments of the present application may be volatile or non-volatile memory, or may include both volatile and non-volatile memory. Here, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. The volatile memory may be a random access memory (RAM) that functions as an external cache memory. By way of non-limiting example, RAM can be available in many forms, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct Rambus random access memory (DR RAM). It should be noted that memory in the systems and methods described herein includes, but is not limited to, these and any other suitable forms of memory.

[0113] It should be understood that the above memories are exemplary and not limiting. For example, the memory in the embodiments of the present application may be a static random access memory (Static RAM: SRAM), a dynamic random access memory (DRAM: DRAM), a synchronous dynamic random access memory (Synchronous DRAM: SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (Enhanced SDRAM: ESDRAM), a synchronous link dynamic random access memory (Synchlink DRAM: SLDRAM), a direct Rambus random access memory (Direct Rambus RAM: DR RAM), etc. That is, the memory in the embodiments of the present application may include, but is not limited to, these and any other suitable types of memory.

[0114] An embodiment of the present application further provides a computer-readable storage medium for storing a computer program.

[0115] Optionally, the computer-readable storage medium can be applied to the network device in the implementation of the present application, and the computer program causes the computer to execute the processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, detailed description is omitted here.

[0116] Optionally, the computer-readable storage medium can be applied to a mobile terminal / terminal device in the implementation of the present application. Also, the computer program causes a computer to execute the process implemented by the mobile terminal / terminal device in each method of the embodiments of the present application. For the sake of brevity, detailed description is omitted here.

[0117] Embodiments of the present application further provide a computer program product including computer program instructions.

[0118] Optionally, the computer program product is applicable to the network device in implementing the present application, and the computer program instructions cause a computer to execute the processes implemented by the network device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0119] Optionally, the computer program product is applicable to a mobile terminal / terminal device in implementing the present application, and the computer program instructions cause a computer to execute the processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0120] An embodiment of the present application further provides a computer program.

[0121] Optionally, the computer program is applicable to the network device in the implementation of the present application, and when the computer program is executed on the computer, the computer executes the processes implemented by the network device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0122] Optionally, the computer program is applicable to a mobile terminal / terminal device in the implementation of the present application, and when the computer program is executed on a computer, the computer executes the processes implemented by the mobile terminal / terminal device in each method of the embodiments of the present application, and detailed description is omitted here for brevity.

[0123] Those skilled in the art can understand that various exemplary units and algorithm steps described in relation to the embodiments disclosed herein can be realized as electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software is determined by the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to realize the described functions for each specific application, but this implementation should not be considered as going beyond the scope of the present invention.

[0124] For convenience and simplicity of explanation, it should be clearly understood by those skilled in the art that the specific operating processes of the above-described systems, devices and units will not be described in detail here, as they may refer to the corresponding processes in the method embodiments.

[0125] It should be understood that the system, device and method disclosed in some embodiments provided by the present invention can be realized in other ways. For example, the device embodiments described above are merely exemplary, and the division of the units is merely a division of logic functions, and other division methods may be used in actual implementation. For example, multiple units or assemblies may be combined or integrated into another system. Or, some features may be ignored or not implemented. In addition, the couplings or direct couplings or communication connections between the shown or discussed mutually may be indirect couplings or communication connections through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

[0126] The units described as separate elements may or may not be physically separate. The elements shown as units may or may not be physical units, i.e., they may be located in the same place or distributed in multiple networks. The objective of the solution of the embodiment can be realized by some or all of the units according to the actual needs.

[0127] Furthermore, each functional unit in each embodiment of the present invention may be integrated into a single processing unit, each unit may exist as a physically separate entity, or two or more units may be integrated into a single unit.

[0128] The functions may be realized in the form of a software functional unit and stored in a computer-readable storage medium when sold or used as an independent product. With this understanding, the technical solution of the present invention, in essence, or a part of the contribution to the prior art or a part of the technical solution, may be embodied in the form of a software product, and such a computer software product may be stored in a storage medium and includes some instructions for causing a computer equipment (such as a personal computer, a server, or a network device) to execute all or some of the steps of the method according to each embodiment of the present invention. The storage medium includes various media capable of storing program code, such as a USB memory, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0129] The above are only specific embodiments of the present application, and the scope of protection of the present application is not limited thereto, and any modifications or replacements that can be easily conceived by those skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A terminal device receives first search space configuration information and second search space configuration information from a network device, the first search space configuration information and the second search space configuration information being two selectable configuration information of a target search space configuration information; The terminal device receives first control information from the network device, the first control information being downlink control information (DCI), and the first control information is used to indicate that the first search space configuration information or the second search space configuration information is the target search space configuration information; The terminal device determines, based on the first control information, to perform downlink control channel monitoring based on the target search space configuration information; The terminal device determines, based on the first control information, to perform downlink control channel monitoring based on the target search space configuration information, A channel monitoring method comprising: when the terminal device receives the first control information, after a second time period has elapsed, performing downlink control channel monitoring in a search space corresponding to target search space configuration information indicated by the first control information, wherein the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

2. the second length of time is configured by the network device; or The second time period is predefined. The method of claim 1.

3. The first search space configuration information or the second search space configuration information includes configuration information of one or more search spaces. The method according to claim 1 or 2.

4. A network device transmits first search space configuration information and second search space configuration information to a terminal device, the first search space configuration information and the second search space configuration information being two selectable configuration information of a target search space configuration information; The network device transmits first control information to the terminal device, the first control information being downlink control information (DCI), and the first control information is used to indicate that the first search space configuration information or the second search space configuration information is the target search space configuration information; A channel monitoring method in which, when the terminal device receives the first control information, the target search space configuration information is used to perform downlink control channel monitoring in a search space corresponding to the target search space configuration information indicated by the first control information after a second time period has elapsed, and the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

5. The second time period is configured by the network device; or The second time period is predefined. The method according to claim 4.

6. The first search space configuration information or the second search space configuration information includes configuration information of one or more search spaces. The method according to claim 4 or 5.

7. A first receiving unit configured to receive first search space configuration information and second search space configuration information from a network device, the first search space configuration information and the second search space configuration information being two selectable configuration information of a target search space configuration information; A second receiving unit configured to receive first control information from the network device, the first control information being downlink control information (DCI), and the first control information being used to indicate that the first search space configuration information or the second search space configuration information is the target search space configuration information; A monitoring unit configured to determine, based on the first control information, to perform downlink control channel monitoring based on the target search space configuration information; A channel monitoring device, wherein the monitoring unit is configured to perform downlink control channel monitoring in a search space corresponding to target search space configuration information indicated by the first control information after a second time period has elapsed when the second receiving unit receives the first control information, and the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

8. The second time period is configured by the network device, or The second time period is predefined.

8. The apparatus of claim 7.

9. The first search space configuration information or the second search space configuration information includes configuration information of one or more search spaces.

9. Apparatus according to claim 7 or 8.

10. A first transmission unit configured to transmit first search space configuration information and second search space configuration information to a terminal device, the first search space configuration information and the second search space configuration information being two selectable configuration information of target search space configuration information; A second transmission unit configured to transmit first control information to the terminal device, the first control information being downlink control information (DCI), and the first control information being used to indicate that the first search space configuration information or the second search space configuration information is the target search space configuration information; A channel monitoring device, wherein when the terminal device receives the first control information, the target search space configuration information is used to perform downlink control channel monitoring in a search space corresponding to the target search space configuration information indicated by the first control information after a second time period has elapsed, and the target search space configuration information indicated by the first control information is the first search space configuration information or the second search space configuration information.

11. The second time period is configured by the network device, or The second time period is predefined.

11. The apparatus of claim 10.

12. The first search space configuration information or the second search space configuration information includes configuration information of one or more search spaces.

12. Apparatus according to claim 10 or 11.

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