CN111918397A - Channel monitoring method and device - Google Patents

Channel monitoring method and device Download PDF

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Publication number
CN111918397A
CN111918397A CN201910390904.2A CN201910390904A CN111918397A CN 111918397 A CN111918397 A CN 111918397A CN 201910390904 A CN201910390904 A CN 201910390904A CN 111918397 A CN111918397 A CN 111918397A
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China
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sub
time unit
control channel
downlink control
monitoring
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CN201910390904.2A
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CN111918397B (en
Inventor
高飞
焦淑蓉
花梦
吕永霞
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201910390904.2A priority Critical patent/CN111918397B/en
Priority to PCT/CN2020/084314 priority patent/WO2020228459A1/en
Publication of CN111918397A publication Critical patent/CN111918397A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application provides a channel monitoring method and a device, wherein the method comprises the following steps: the terminal side equipment acquires a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit; and the terminal side equipment monitors the downlink control channel according to the first monitoring parameter. By the method, the terminal side equipment determines the maximum blind detection times of the blind detection of the downlink control channel in the first sub-time unit and/or the maximum number of the non-overlapping CCEs used for channel estimation of the downlink control channel in the first sub-time unit according to the acquired first monitoring parameter, so that the downlink control channel is monitored in the sub-time unit with the granularity smaller than that of the time slot.

Description

Channel monitoring method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a channel monitoring method and apparatus.
Background
In a communication system, a network side device may transmit Downlink Control Information (DCI) to a terminal side device through a Physical Downlink Control Channel (PDCCH). The network side device may configure a search space set (search space set) corresponding to each DCI for the terminal side device through high-layer signaling, but does not inform the terminal side device on which PDCCH candidate (candidate) in the search space set the DCI is transmitted. The terminal side device may determine, according to the configuration information sent by the network side device, the DCI expected to be received currently, so that the terminal side device may perform channel estimation on PDCCH candidates in a search space set corresponding to the DCI to be received according to the configuration information, and detect whether (monitor) the PDCCH candidates carry the DCI. Since the detection complexity is large, the terminal side device consumes a large amount of power, and therefore, in a New Radio (NR) system, the maximum detection times for detecting DCI by the terminal side device in one slot (slot) and the maximum number of Control Channel Elements (CCEs) used for channel estimation may be set.
In NR systems, a sub-time unit of smaller granularity than a slot is introduced: for convenience of description, the time span (span) may also be referred to as a listening span (monitoring span), and the like.
At present, under the condition that a sub-time unit with granularity smaller than that of a time slot exists, how a terminal side device monitors a downlink control channel does not have an explicit solution, which is a problem to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a channel monitoring method and device, which are used for solving the problem of how to monitor a downlink control channel by terminal side equipment.
In a first aspect, an embodiment of the present application provides a channel monitoring method, where the method includes: the terminal side equipment acquires a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit; and the terminal side equipment monitors the downlink control channel according to the first monitoring parameter.
By the method, the terminal side equipment determines the maximum blind detection times for the blind detection of the downlink control channel in the first sub-time unit according to the acquired first monitoring parameter, and/or determines the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first sub-time unit, so that the terminal side equipment can monitor the downlink control channel in the first sub-time unit according to the determined maximum blind detection times and/or the maximum number of the non-overlapping CCEs, and the monitoring of the downlink control channel in the sub-time unit with the granularity smaller than that of the time slot is realized.
In a possible implementation manner, the first monitoring parameter is a predefined parameter; or the first monitoring parameter is determined by the terminal side device according to a first message from a network side device, where the first message indicates the first monitoring parameter for monitoring the downlink control channel.
In a possible implementation manner, the first monitoring parameter is determined by the network side device according to a preset maximum monitoring capability under the condition that the terminal side device is determined according to a first message from the network side device; the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
In a possible implementation manner, the method further includes: the terminal side device sends a second message to a network side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any first monitoring capability in the at least one first monitoring capability, the first monitoring capability includes the maximum blind detection times supported by the terminal side device for blind detection of the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs supported by the terminal side device for channel estimation of the downlink control channel in the first sub-time unit; the first listening parameter is one of the at least one first listening capability.
By the above method, the first monitoring parameter is determined from at least one first monitoring capability supported by the terminal side device, so that the maximum blind detection times configured in the first sub-time unit and/or the maximum number of non-overlapping CCEs are within the supported capability range of the terminal side device, and waste caused by over-configuration is avoided.
In a possible implementation manner, the method further includes: the at least one first listening capability is selected by the terminal side device from a predefined plurality of listening capabilities.
In a possible implementation manner, the terminal side device sends a third message to the network side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any one of the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit;
the terminal side equipment receives a fourth message sent by the network side equipment according to the at least one first parameter, wherein the fourth message indicates the configuration of a search space where the downlink control channel is located; the monitoring, by the terminal side device, the downlink control channel according to the first monitoring parameter includes: and the terminal side equipment monitors the downlink control channel according to the first monitoring parameter and the fourth message.
In a possible implementation manner, the first sub-time unit is a sub-time unit that prohibits at least one of the first operation, the second operation, and the third operation from being performed; wherein the first operation is to determine a number of blind detections for blind detection of a downlink control channel in the first sub-time unit; a second operation of determining the number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first sub-time unit; the third operation is configured to determine whether a number of blind detections for blind-detecting the downlink control channel in the first sub-time unit is greater than a maximum number of blind detections for the first time unit, and/or determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than a maximum number of CCEs for the first time unit.
In a possible implementation manner, the monitoring, by the terminal side device, the downlink control channel according to the first monitoring parameter includes: the terminal side equipment determines a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter; the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes the maximum detection times of the terminal side device for blindly detecting the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel; and the terminal side equipment monitors the downlink control channel according to the third monitoring parameter.
By the method, the terminal side equipment determines the third parameter according to the first monitoring parameter and the second parameter, so that the sum of the third parameters corresponding to all the sub-time units in the first time unit is less than or equal to the second parameter, and the occurrence of the maximum blind detection times and/or the occurrence of the over-configuration of the maximum number of non-overlapping CCEs is avoided.
In a possible implementation, the method further includes: and the terminal side equipment receives a fifth message from the network side equipment, wherein the fifth message indicates the position of the first sub-time unit in the first time unit where the first sub-time unit is located.
By the method, the position of the first sub-time unit can be indicated through the fifth message, so that the terminal side equipment can accurately determine the sub-time unit corresponding to the first monitoring parameter.
In a second aspect, the present application provides an apparatus. The apparatus has a function of implementing the terminal side device according to the first aspect, for example, the apparatus includes a module, a unit, or a means (means) for the terminal side device to execute the steps according to the first aspect, and the function, the unit, or the means (means) may be implemented by software, or implemented by hardware executing corresponding software.
In a possible design, the apparatus includes a processing unit and a transceiver unit, and the functions performed by the processing unit and the transceiver unit may correspond to the steps performed by the terminal-side device according to the first aspect.
In one possible design, the apparatus includes a processor, and may further include a transceiver, where the transceiver is configured to transmit and receive signals, and the processor executes the program instructions to implement the method performed by the terminal-side device in any possible design or implementation manner of the first aspect.
Wherein the apparatus may further comprise one or more memories for coupling with the processor. The one or more memories may be integrated with the processor or separate from the processor, which is not limited in this application.
In one possible approach, the memory stores the necessary computer program instructions and/or data to implement the functionality of the terminal-side device of the first aspect described above. The processor may execute the computer program instructions stored in the memory to perform the method performed by the terminal-side device in any possible design or implementation manner of the first aspect.
In a third aspect, an embodiment of the present application provides a channel monitoring method, including: the network side equipment acquires a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit; and the network side equipment configures the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first sub-time unit according to the first monitoring parameter, and/or the maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit.
By the method, the network side equipment determines the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit and/or the maximum number of non-overlapping CCEs used for channel estimation on the downlink control channel in the first sub-time unit according to the acquired first monitoring parameter, so that the maximum blind detection times and/or the maximum number of the non-overlapping CCEs are configured for the terminal side equipment in the sub-time unit with the granularity smaller than that of a time slot.
In a possible implementation manner, the first listening parameter is a predefined parameter.
In a possible implementation manner, the first monitoring parameter is determined by the network side device according to a preset maximum monitoring capability; the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
In a possible implementation manner, the method further includes: the network side device receives a second message from the terminal side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any one of the at least one first monitoring capability, the first monitoring capability includes a maximum number of blind detections supported by the terminal side device for the blind detection of the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs supported by the terminal side device for channel estimation of the downlink control channel in the first sub-time unit; and the network side equipment determines the first monitoring parameter according to the at least one first monitoring capability.
By the above method, the first monitoring parameter is determined from at least one first monitoring capability supported by the terminal side device, so that the maximum blind detection times configured in the first sub-time unit and/or the maximum number of non-overlapping CCEs are within the supported capability range of the terminal side device, and waste caused by over-configuration is avoided.
In a possible implementation manner, the method further includes: the at least one first listening capability is selected by the terminal side device from a predefined plurality of listening capabilities.
In a possible implementation, the method further includes: the network side device receives a third message from the terminal side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any one of the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit; and the network side equipment sends a fourth message to the terminal side equipment according to the at least one first parameter, wherein the fourth message indicates the configuration of the search space where the downlink control channel is located.
In a possible implementation manner, the first sub-time unit is a sub-time unit that prohibits at least one of the first operation, the second operation, and the third operation from being performed; wherein the first operation is to determine a number of blind detections for blind detection of a downlink control channel in the first sub-time unit; a second operation of determining the number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first sub-time unit; the third operation is configured to determine whether a number of blind detections for blind-detecting the downlink control channel in the first sub-time unit is greater than a maximum number of blind detections for the first time unit, and/or determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than a maximum number of CCEs for the first time unit.
In a possible implementation manner, the configuring, by the network side device, the maximum blind detection times of the terminal side device for blind detection of the downlink control channel in the first sub-time unit according to the first monitoring parameter, and/or the maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit includes:
the network equipment determines a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter; the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes a maximum detection number of times that the terminal side device blindly detects the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel.
In a possible implementation, the method further includes: and the network side equipment sends a fifth message to the terminal side equipment, wherein the fifth message indicates the position of the first sub time unit in the first time unit where the first sub time unit is located.
By the method, the position of the first sub-time unit can be indicated through the fifth message, so that the terminal side equipment can accurately determine the sub-time unit corresponding to the first monitoring parameter.
In a fourth aspect, an embodiment of the present application provides a channel monitoring method, including:
a network side device receives a second message from a terminal side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any first monitoring capability in the at least one first monitoring capability, the first monitoring capability includes a maximum blind detection number supported by the terminal side device for blind detection of the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs supported by the terminal side device for channel estimation of the downlink control channel in the first sub-time unit; and the network side equipment determines a first monitoring parameter according to the at least one first monitoring capability.
In a possible implementation manner, the determining, by the network side device, the first monitoring parameter according to the at least one first monitoring capability includes: and the network side equipment selects one first monitoring capability from the at least one first monitoring capability as a first monitoring parameter.
In a fifth aspect, the present application provides an apparatus. The apparatus has a function of implementing the network side device according to the third aspect or the fourth aspect, for example, the apparatus includes a module or a unit or a means (means) corresponding to the network side device executing the step according to the third aspect or the fourth aspect. The functions or units or means (means) may be implemented by software, or by hardware executing corresponding software.
In one possible design, the apparatus includes a processing unit and a transceiver unit, and functions performed by the processing unit and the transceiver unit may correspond to steps performed by the network-side device in any possible design or implementation manner of the third aspect or the fourth aspect.
In another possible design, the communication apparatus includes a processor, and may further include a transceiver, where the transceiver is configured to transmit and receive signals, and the processor executes program instructions to implement the method performed by the network side device in any possible design or implementation manner of the third aspect or the fourth aspect.
Wherein the apparatus may further comprise one or more memories for coupling with the processor. The one or more memories may be integrated with the processor or separate from the processor, which is not limited in this application.
In one possible implementation, the memory stores the necessary computer program instructions and/or data to implement the functionality of the network-side device as referred to in any possible design or implementation of the third or fourth aspect. The processor may execute the computer program instructions stored in the memory to perform the method performed by the network side device in any possible design or implementation manner of the third aspect or the fourth aspect.
Embodiments of the present application provide a computer-readable storage medium, which stores computer-readable instructions, and when the computer-readable instructions are read and executed by a computer, the computer-readable instructions cause the computer to perform the method in any one of the above possible designs.
The embodiments of the present application provide a computer program product, which when read and executed by a computer, causes the computer to perform the method of any one of the above possible designs.
The embodiment of the present application provides a chip, where the chip is connected to a memory, and is used to read and execute a software program stored in the memory, so as to implement the method in any one of the above possible designs.
An embodiment of the present application provides a communication system, including any one of the above possible terminal-side devices and any one of the above possible network-side devices.
Drawings
Fig. 1 is a schematic diagram of a communication system suitable for use with the method provided by an embodiment of the present application;
fig. 2 is a schematic flowchart of a channel monitoring method according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a time cell provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a channel monitoring apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a channel monitoring apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a channel monitoring apparatus according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a channel monitoring device according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the drawings attached hereto.
The embodiment of the application can be applied to various mobile communication systems, such as: a New Radio (NR) system, a Long Term Evolution (LTE) system, an advanced long term evolution (LTE-a) system, an evolved Long Term Evolution (LTE) system, a future communication system, and other communication systems, and in particular, is not limited herein.
For the convenience of understanding the embodiments of the present application, a communication system applicable to the embodiments of the present application will be first described in detail by taking the communication system shown in fig. 1 as an example. Fig. 1 shows a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application. As shown in fig. 1, the communication system 100 includes a network-side device 102 and a terminal-side device 106, where the network-side device 102 may be configured with multiple antennas, and the terminal-side device 106 may also be configured with multiple antennas. The network side device 102 may transmit the DCI to the terminal side device 106 through the PDCCH. The DCIs of different terminal side devices are distinguished by corresponding cell radio network temporary identities (C-RNTIs), that is, Cyclic Redundancy Check (CRC) of the DCIs of the different terminal side devices are scrambled by the C-RNTIs of the terminal side devices. Since the terminal side device does not know which PDCCH candidate or PDCCH candidates the network side device will receive the DCI on, the terminal side device must attempt decoding on each PDCCH candidate in the search space set corresponding to the DCI, that is, the terminal side device performs CRC check on information carried on the PDCCH candidate by using the C-RNTI of the terminal side device, and if the CRC check is successful, the terminal side device determines that the DCI is successfully received. The act of the terminal-side device attempting to decode at each PDCCH candidate to determine whether the corresponding DCI is received may also be referred to as Blind Detection (BD) PDCCH.
In the embodiment of the present application, the terminal-side device is a device having a wireless transceiving function or a chip that can be disposed in the device. The device with wireless transceiving function may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a user agent, or a user equipment. In practical applications, the terminal-side device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety, a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), and the like. The embodiments of the present application do not limit the application scenarios. The device having the wireless transceiving function and the chip that can be provided in the device are collectively referred to as a terminal-side device in the present application.
In this embodiment, the network side device may be a wireless access device in various systems, such as an evolved Node B (eNB), a Radio Network Controller (RNC) or a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B or home Node B, HNB), a Base Band Unit (BBU), an Access Point (AP) in a wireless fidelity (WIFI) system, a wireless relay Node, a wireless backhaul Node, a transmission point (TRP or transmission point, TP), and the like, and may also be a gbb or a transmission point (TRP or transmission point, TP) in a 5G (nr) system, one antenna or a group of antennas of the base station(s) in the 5G (TP) system includes multiple panels, alternatively, it may also be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a DU under a centralized-distributed (CU-DU) architecture.
Hereinafter, some terms in the present application are explained to facilitate understanding by those skilled in the art.
The symbols include, but are not limited to, Orthogonal Frequency Division Multiplexing (OFDM) symbols, Sparse Code Division Multiple Access (SCMA) symbols, Filtered Orthogonal Frequency Division Multiplexing (F-OFDM) symbols, and Non-Orthogonal Multiple Access (NOMA) symbols, and may be determined according to actual situations, and are not described herein again.
Time slot: a slot refers to a basic time unit, and occupies a plurality of OFDM symbols in succession in the time domain. For example, in LTE, 1 slot occupies 6 or 7 consecutive OFDM symbols in the time domain; in NR, 1 slot occupies 14 consecutive OFDM symbols (normal cyclic prefix) or 12 consecutive OFDM symbols (extended cyclic prefix) in the time domain.
Aggregation Level (AL): the number of CCEs contained in 1 PDCCH is called the aggregation level of the PDCCH. For example, a PDCCH includes 4 CCEs, and then the aggregation level of the PDCCH is 4.
PDCCH candidates: the standard protocol specifies the number of PDCCH candidates for each aggregation level, i.e. the locations of time-frequency resources where the PDCCH may occur.
Control Resource Set (CORESET): the concept proposed in NR system can be understood as a set of time-frequency resources. In time domain, 1 CORESET may be configured as 1 or several consecutive OFDM symbols; in the frequency domain, 1 CORESET may be a set of contiguous or non-contiguous frequency domain resources, containing search spaces at different aggregation levels.
Searching a space: all PDCCH candidates corresponding to 1 aggregation level given within 1 CORESET constitute 1 search space. The sum of the search spaces corresponding to all aggregation levels corresponding to 1 DCI may be referred to as a search space set (search space set).
Time span: one time unit shorter than slot. Each span is at least Y consecutive OFDM symbols in length, Y being an integer greater than 0. Where Y consecutive OFDM symbols are consecutive in the time domain (there is no more than 1 OFDM symbol interval). Currently, span is constrained by the following rules:
there cannot be overlapping symbols between the spans, i.e., one symbol cannot belong to two spans simultaneously.
Two, each span is contained in 1 individual slot, i.e., the span cannot cross the boundary of the slot.
And thirdly, each PDCCH Monitoring Opportunity (MO) is completely contained in 1 span. I.e., 1 MO cannot cross the span boundary. The MO here indicates the duration of blind detection PDCCH by 1 terminal side device, and is jointly determined by 1 monitoring start position and the monitored CORESET bound to this search space set. For example, the listening starting position of the terminal side device listening to 1 search space set is the 1 st symbol in 1 slot, and this search space set is bound with 1 CORESET with a length of 3 symbols, so that the MO of this search space set is monitored as the first 3 symbols of the slot where it is located, that is, the 1 st symbol, the 2 nd symbol and the 3 rd symbol.
And fourthly, for all PDCCH MO in 1 slot, the number of different initial symbols of span cannot exceed floor (14/X), wherein X is the minimum value of the number of the reporting capacity of the terminal side equipment. floor () represents a rounding down operation.
And fifthly, the number of different initial symbols of different PDCCH MOs in 1 slot cannot exceed 7.
Sixthly, in the secondary cell, the number of different initial symbols of the PDCCH MO in a half slot cannot exceed 4.
The division of the span in one slot is determined by protocol presetting or high-level parameter configuration of a base station or self division of a user according to a protocol presetting rule and high-level parameters, one span is composed of a plurality of symbols, the length of each span in one slot can be the same or different, for example, the length of some spans in one slot is 7 symbols, and the length of some spans is 1 or 2 symbols.
The time unit may be a time unit such as a time slot. A sub-time unit may refer to a unit smaller than the length of a slot, and may refer to a symbol, a time span, a half-slot, or a sub-slot unit, for example. Different time units within 1 time slot may correspond to the same upper limit of the listening capability or may correspond to different upper limits of the listening capability. Different time units in 1 time slot can correspond to different upper limits of the monitoring capability, and it can be understood that the time unit corresponding to the upper limit of the maximum monitoring capability is a first type of span, the time unit corresponding to the upper limit of the second largest monitoring capability is a second type of span, and so on. Namely, different spans are associated with the monitoring capability upper limit values with different sizes, so that the first type of span, the second type of span and the like can be implicitly determined from the perspective of the monitoring capability upper limit values with different sizes.
The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.
Referring to fig. 2, a schematic flow chart of a channel monitoring method according to an embodiment of the present application is shown.
The method comprises the following steps:
step 201: the network side equipment acquires a first monitoring parameter;
step 202: and the network side equipment configures the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first sub-time unit according to the first monitoring parameter, and/or the maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit.
The downlink control channel may be a PDCCH or an enhanced physical downlink control channel (ePDCCH), and the embodiment of the present application is not limited to this.
Step 203: the terminal side equipment acquires a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit;
step 204: and the terminal side equipment monitors the downlink control channel according to the first monitoring parameter.
It should be noted that the number of sub-time units included in the first time unit in which the first sub-time unit is located is n, where the first sub-time unit may be any one of the n sub-time units, and n is an integer greater than 0.
In this embodiment of the application, the first monitoring parameter may be a predefined parameter or a parameter determined by the network side device, which will be described in detail below.
In a first possible implementation manner, the first listening parameter is a predefined parameter.
For example, in this implementation, the first monitoring parameter may be a parameter pre-agreed by the terminal side device and the network side device, and the terminal side device may not report the first monitoring parameter to the network side device. At this time, the first monitoring parameter may be a parameter specified by the protocol, and the first monitoring parameters corresponding to any terminal side device are the same.
For example, in this implementation, the first listening parameter may also be one first listening capability selected by the terminal side device from at least one first listening capability of the terminal side device according to a predefined rule.
It should be noted that the capability reported by the terminal side device is 1 or more of the predefined capabilities of the protocol, and is not the capability reported at will.
For example, as shown in table 2 below, the terminal side device supports the configuration of the time span as (2,2), and at this time, the terminal side device supports the first listening capability as M3,1、M3,2And M3,3And the like. The terminal side device can exchange M3,1、M3,2And M3,3And reporting 1 or more to the network side equipment.
Each first monitoring capability indicates what capability a terminal side device has in a first sub-time unit, and specifically, for any first monitoring capability of the at least one first monitoring capability, the first monitoring capability includes a maximum number of blind detections supported by the terminal side device for blind detection of the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs supported by the terminal side device for channel estimation of the downlink control channel in the first sub-time unit. For example, the maximum blind detection times included in the first monitoring capability is 44 times, and the maximum number of the included non-overlapping CCEs is 16, which may indicate that the terminal side device may blindly detect the downlink control channel for 44 times in the first sub-time unit at the maximum, and use 16 non-overlapping CCEs at most when performing channel estimation on the downlink control channel in the first sub-time unit.
After the terminal side device selects one first monitoring capability from at least one first monitoring capability supported by the terminal side device from one or more capabilities predefined by a protocol as a first monitoring parameter, the terminal side device may send the first monitoring parameter to the network side device.
The terminal side device may also send a second message to the network side device, where the second message indicates at least one first monitoring capability supported by the downlink control channel. The network side equipment adopts a predefined rule again, and one first monitoring capability selected from at least one first monitoring capability is used as a first monitoring parameter.
For example, if the predefined rule is to select the maximum capability, both the terminal-side device and the network-side device use the maximum capability of at least one first monitoring capability as the first monitoring parameter; or the predefined rule is that the minimum capability is selected, the terminal side device and the network side device both use the minimum capability as the first monitoring parameter.
It should be noted that, the at least one first monitoring capability for determining the first monitoring parameter may be only one part of the predefined multiple monitoring capabilities of the terminal-side device, that is, the at least one first monitoring capability is selected by the terminal-side device from the predefined multiple monitoring capabilities, and how to select the embodiment of the present application is not limited thereto.
In a second possible implementation manner, the first monitoring parameter is a parameter determined by the network side device.
In this implementation, the terminal-side device may send the second message to the network-side device. And the network side equipment selects one first monitoring capability from at least one first monitoring capability indicated by the second message as a first monitoring parameter, and sends a first message to the terminal side equipment, wherein the first message indicates the first monitoring parameter for monitoring the downlink control channel.
For example, as shown in table 1 below, the terminal side device supports the configuration of time spans of (1,1), (2,1), and (2,2), and at this time, the terminal side device may report three first listening capabilities: m1，M2And M3. The network side device may use the largest first monitoring capability as the first monitoring parameter, may use the smallest first monitoring capability as the first monitoring parameter, and may also randomly select one first monitoring capability as the first monitoring parameter, which is not limited in this embodiment of the present application.
For example, as shown in table 1 below, the terminal-side device supports the configurations of the time spans of (1,1), (2,1), and (2,2), and at this time, the terminal-side device may report three first listening capabilities corresponding to the configurations of the time spans of (2, 2): m3,1、M3,2And M3,3. The network side device may use the largest first monitoring capability as the first monitoring parameter, may use the smallest first monitoring capability as the first monitoring parameter, and may also randomly select one first monitoring capability as the first monitoring parameter, which is not limited in this embodiment of the present application.
The network side device selects a plurality of first monitoring capabilities from the at least one first monitoring capability indicated by the second message as the first monitoring parameters, for example, the terminal side device reports three first monitoring capabilities: m1，M2And M3. The network side equipment can exchange M1，M2As the first listening parameter. If there are 3 spans, it can be M1Corresponding to the first span, M2Corresponding to the second span and the third span.
In this implementation manner, the first monitoring parameter may also be determined by the network side device according to a preset maximum monitoring capability. The preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
It should be noted that the preset maximum monitoring capability is not reported by the terminal side device, but is a value predefined by a protocol, and may be applicable to all terminal side devices. And at least one first monitoring capability indicated by the second message sent by the terminal side equipment is the capability of the terminal side equipment according to the terminal side equipment.
In this implementation, the terminal side device may not directly send the at least one first monitoring capability, and the terminal side device may send a third message to the network side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any first parameter in the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit.
The network side device may select one first monitoring capability from at least one first monitoring capability corresponding to the at least one first parameter as a first monitoring parameter, and send the first monitoring parameter to the terminal side device.
For example, each first parameter may be represented as (X, Y), where X is a minimum time domain interval of every two sub-time units in the time unit where the first sub-time unit is located, and Y is a maximum time domain length included in each sub-time unit in the time unit where the first sub-time unit is located. The correspondence between the first listening capability and the first parameter may be as shown in table 1.
TABLE 1
Index value X Y First listening capability
1 1 1 M 1
2 2 1 M 2
3 2 2 M 3
4 4 1 M 4
5 4 2 M 5
6 4 3 M 6
7 7 1 M 7
8 7 2 M 8
9 7 3 M9
In table 1, when the first parameter is (2,1), the corresponding first monitoring capability is M2(ii) a When the first parameter is (2,2), the corresponding first monitoring capability is M3Other cases will not be described again. It should be noted that each first parameter may correspond to a plurality of first listening capabilities, for example, as shown in table 2. Table 1 is only illustrated by an example that one first parameter corresponds to one first listening capability, and does not represent any limitation.
TABLE 2
Index value X Y First listening capability
1 1 1 M1,1,M1,2,M1,3,
2 2 1 M2,1,M2,2,M2,3,
3 2 2 M3,1,M3,2,M3,3,
4 4 1 M4,1,M4,2,M4,3,
5 4 2 M5,1,M5,2,M5,3,
6 4 3 M6,1,M6,2,M6,3,
7 7 1 M7,1,M7,2,M7,3,
8 7 2 M8,1,M8,2,M8,3,
9 7 3 M9,1,M9,2,M9,3,
In table 2, one first parameter corresponds to at least one first listening capability. For example, when the first parameter is (2,1), the corresponding first monitoring capability is M1,1、M1,2And M1,3And the like.
The third message sent by the terminal side device may directly carry at least one first parameter, or may also carry an index value corresponding to each first parameter in the at least one first parameter, for example, carry index values 1 and 2, or carry (1,1) and (2, 1). Other implementations are not limited.
The network side device may further determine, according to the at least one first parameter, a configuration of a search space in which a downlink control channel is located, and send the configuration to the terminal side device through a fourth message. The terminal side device may thus monitor the downlink control channel according to the first monitoring parameter and the fourth message. Specific contents of the configuration of the search space in which the downlink control channel is located may refer to descriptions in the prior art, and are not limited herein.
In this embodiment of the application, after determining the first monitoring parameter, the network side may not indicate the position of the first sub-time unit corresponding to the first monitoring parameter in the first time unit. At this time, the position of the first sub-time unit may be a preset position in the first time unit. For example, the network side device sends a first message to the terminal side device, where the first message indicates 2 first listening parameters, which are T1 and T2, respectively, and the position of T1 in the first message is before T2. The first time unit comprises 2 sub-time units, namely a sub-time unit 1 and a sub-time unit 2 according to the time sequence. For this purpose, it may be predetermined that the first listening parameter positioned at the front in the first message corresponds to a sub time unit with a time ahead in the first time unit, in which case T1 may correspond to sub time unit 1, and T2 may correspond to sub time unit 2. Of course, this is by way of example only, and other conventions may exist and are not specifically illustrated herein.
In another implementation manner, the network side device may also send a fifth message to the terminal side device, where the fifth message indicates a location of the first sub-time unit in the first time unit. For example, the network side device sends a first message to the terminal side device, where the first message indicates 2 first listening parameters, which are T1 and T2, respectively. The first time unit includes 3 sub-time units, which are sub-time unit 1, sub-time unit 2, and sub-time unit 3. For this purpose, the fifth message may include a bitmap, where one bit in the bitmap corresponds to one sub-time unit, and when a bit takes a value of 1, it indicates that the sub-time unit corresponding to the bit corresponds to T1; when a bit takes the value 0, it indicates that the sub-time unit corresponding to the bit corresponds to T2. For example, a bitmap of 101 may indicate that T1 corresponds to sub time cell 1 and sub time cell 3, and T2 corresponds to sub time cell 2. Of course, this is by way of example only, and other conventions may exist and are not specifically illustrated herein.
It should be noted that the terminal-side device may determine, according to the indication of the network-side device, the positions of the n sub-time units included in the first time unit. For example, the network side device configures 1 bitmap b (l) for determining a span pattern to the terminal side device, where b (l) is 1110111011000. And the terminal side equipment determines the time domain symbol position of the PDCCH to be monitored in 1 slot according to all the search space set configurations configured by the network side equipment. And the terminal side equipment determines that the duration of the CORESET bound by all the search space sets in 1 slot has 1 symbol, 2 symbols and 3 symbols in the time domain according to the configuration of all the search space sets. The terminal side device reports the capability (X, Y) { (2,2), (4,3), (7,3) }. The time domain length of 1 span or the number of consecutive OFDM symbols contained in 1 span determines max { max (CORESET time domain length), min (y) } 3 through the following mapping relationship. And the terminal side equipment determines the starting position of the first span according to the position of the first '1' of b (l), and determines the time domain position of the first span by adding the span length 3. The terminal side device determines the starting position of the second span according to the nearest 1' not belonging to the first span in b (l), and determines the time domain position of the 2 nd span by adding the span length 3. Finally, the terminal side device determines the starting position of the third span according to the nearest 1' which does not belong to the first span and the second span in b (l), and determines the time domain position of the third span by adding span length 3. The resulting pattern may be as shown in fig. 3. Or the first time unit may also be a combination of the aforementioned spans.
In this embodiment of the present application, in a possible scenario, after the network-side device obtains the first monitoring parameter, the maximum blind detection times indicated by the first monitoring parameter may be directly used as the maximum blind detection times of the terminal-side device for blind detection of the downlink control channel in the first sub-time unit, and/or the maximum number of CCEs indicated by the first monitoring parameter is used as the maximum number of CCEs for the terminal-side device to perform channel estimation on the downlink control channel in the first sub-time unit.
Correspondingly, after the terminal side device obtains the first monitoring parameter, the maximum blind detection times indicated by the first monitoring parameter may be directly used as the maximum blind detection times for the terminal side device to blindly detect the downlink control channel in the first sub-time unit, and/or the maximum number of the CCEs indicated by the first monitoring parameter may be used as the maximum number of the CCEs for the terminal side device to perform channel estimation on the downlink control channel in the first sub-time unit.
In this scenario, it may not be specified that the terminal side device performs the maximum blind detection times for blind detection on the downlink control channel in the first time unit where the first sub-time unit is located, and/or does not specify the maximum number of non-overlapping CCEs used for channel estimation on the downlink control channel in the first time unit.
In this scenario, the first sub-time unit may be a sub-time unit that prohibits or does not require performing at least one of the first operation, the second operation, and the third operation;
the first operation is used for determining the blind detection times of the downlink control channel in the first sub-time unit according to a first preset condition; a second operation is performed to determine, according to a second preset condition, the number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first sub-time unit; the third operation is configured to determine whether a number of blind detections for blind-detecting the downlink control channel in the first sub-time unit is greater than a maximum number of blind detections for the first time unit, and/or determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than a maximum number of CCEs for the first time unit.
The first preset condition includes the following: CCE sets corresponding to the two PDCCH candidates are the same, namely the aggregation levels of the two PDCCH candidates are the same, and the starting CCE positions of the included CCEs are the same; scrambling code sequences of the two PDCCH candidates are the same; the two PDCCH candidates are from the same Control Resource Set (CORESET); the DCI length detected by the terminal side equipment in the two PDCCH candidates is the same.
And if the two PDCCH candidates meet the first preset condition, the two PDCCH candidates correspond to one blind detection time. And if the two PDCCH candidates do not meet the first preset condition, the two PDCCH candidates correspond to two blind detection times. Under the condition that the two PDCCH candidates correspond to one blind detection frequency, the terminal side equipment is equivalent to blind detection of the two PDCCH candidates as long as blind detection is carried out on whether DCI exists in the resources associated with one PDCCH candidate. And under the condition that the two PDCCH candidates correspond to two blind detection times, the two PDCCH candidates do not meet any one of first preset conditions, and the terminal side equipment needs to blindly detect whether DCI exists in the resources associated with the two PDCCH candidates respectively.
The second preset condition includes: the two CCEs are from different CORESET; and the time when the terminal side equipment blindly detects the PDCCH in the two PDCCH candidates corresponding to the two CCEs is different.
For any two CCEs, under the condition that the any two CCEs are respectively from different PDCCH candidates, if the any two CCEs satisfy at least one condition in a second preset condition, the any two CCEs are two non-overlapping CCEs, otherwise, the any two CCEs are one non-overlapping CCE, that is, when the number of the non-overlapping CCEs is counted, the two CCEs are only used as one non-overlapping CCE.
With reference to the foregoing description, for example, when the first sub-time unit is a sub-time unit for which the first operation is prohibited or not required, the maximum blind detection number of times of the terminal-side device in the first sub-time unit may be a product of the number of PDCCH candidates correspondingly configured in the first sub-time unit and the number of different DCI sizes that the terminal-side device blindly detects in the first sub-time unit.
For example: taking a sub-time unit as an example, 2 search space sets are configured in 1 span. The first search space set includes 4 PDCCH candidates and 2 DCI sizes to be monitored, which are 40 bits and 60 bits, respectively. The second set of search spaces includes 2 PDCCH candidates and 1 DCI size to be monitored. Therefore, the current span corresponds to blind detection times of 4 × 2+2 × 1 — 10 times. Because the network side equipment can ensure that the PDCCH configuration does not exceed the PDCCH monitoring capability upper limit of the span and the condition that the blind detection times are recorded as 1 time does not occur, the terminal side equipment does not prohibit the execution of the first operation, namely does not execute the operation of judging whether the blind detection times corresponding to the 2 PDCCH candidates are 1 time or not and does not need to judge whether the PDCCH monitoring capability upper limit of the span is exceeded or not.
In another possible scenario, after the network-side device and the terminal-side device acquire the first monitoring parameter, the maximum blind detection times indicated by the first monitoring parameter may not be taken as the maximum blind detection times for the terminal-side device to blindly detect the downlink control channel in the first sub-time unit, and/or the maximum number of CCEs indicated by the first monitoring parameter is taken as the maximum number of CCEs for the terminal-side device to perform channel estimation on the downlink control channel in the first sub-time unit, the finally determined maximum blind detection times is less than or equal to the maximum blind detection times indicated by the first monitoring parameter, and the determined maximum number of CCEs is less than or equal to the maximum number of CCEs indicated by the first monitoring parameter. How this is determined in detail is described below.
In this scenario, a second listening parameter of the terminal-side device in the first time unit in which the first sub-time unit is located may be specified. At this time, under the condition that the number of the sub-time units included in the first time unit is n, the sum of the maximum blind detection times of the terminal side device for blind detection of the downlink control channel in each of the n sub-time units is less than or equal to the maximum blind detection times of the terminal side device for blind detection of the downlink control channel in the first time unit; the sum of the maximum number of non-overlapping CCEs used by the terminal side equipment for channel estimation of the downlink control channel in each of the n sub-time units is less than or equal to the maximum number of non-overlapping CCEs used by the terminal side equipment for channel estimation of the downlink control channel in the first time unit. The second monitoring parameter is the maximum blind detection times of the terminal side device for blind detection of the downlink control channel in the first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit.
For example, the first time unit includes 3 sub-time units, which are respectively sub-time unit 1 to sub-time unit 3, and the maximum blind detection times indicated by the corresponding second monitoring parameter in the first time unit by the terminal side device is 50; the maximum blind detection frequency indicated by the first monitoring parameter corresponding to the terminal-side device in sub-time unit 1 is 20, the maximum blind detection frequency indicated by the first monitoring parameter corresponding to the terminal-side device in sub-time unit 2 is 20, and the maximum blind detection frequency indicated by the first monitoring parameter corresponding to the terminal-side device in sub-time unit 3 is 30. At this time, 20+20+30 is 70, which is greater than 50, and the terminal side device needs to adjust the first monitoring parameter at this time, so as to avoid that the sum of the maximum blind detection times corresponding to the 3 sub-time units is greater than the maximum blind detection time corresponding to the first time unit, which will be described in detail below.
Based on the above description, in this embodiment of the application, the terminal-side device and the network-side device may determine a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter; the terminal side equipment monitors the downlink control channel according to the third monitoring parameter; correspondingly, the network side device configures, according to the third monitoring parameter, the maximum blind detection times of the terminal side device for blind detection of the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs for channel estimation of the downlink control channel in the first sub-time unit.
Wherein the third monitoring parameter includes a maximum number of times that the terminal side device blindly detects the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel.
How to determine the third monitoring parameter is described below according to different situations. In the following description, the number of sub-time units included in the first time unit is n, and the first sub-time unit is any one of the n sub-time units. Wherein n is an integer greater than 0.
A first possible implementation:
the third monitoring parameter corresponding to any one of the n sub-time units satisfies the following formula (1):
formula (1):
Figure BDA0002056453580000141
wherein H represents a third monitoring parameter corresponding to any one of the n sub-time units, T represents the first monitoring parameter, P represents the second monitoring parameter, min () represents a minimum value operation,
Figure BDA0002056453580000142
indicating a rounding down operation.
For example: n-5, P-112, T-28, each sub-timeThe third listening parameter of the unit is
Figure BDA0002056453580000143
At this time 22 x 5 ═ 110<112。
As can be seen from formula (1), the sum of the finally determined third monitoring parameters corresponding to the n sub-time units is certainly less than or equal to the second monitoring parameter.
There may be a plurality of variations of the above equation (1), for example, the third listening parameter corresponding to n-1 sub time units of the n sub time units satisfies the following equation (2), and the third listening parameter corresponding to sub time units other than the n-1 sub time units satisfies the following equation (3):
formula (2):
Figure BDA0002056453580000151
formula (3):
Figure BDA0002056453580000152
wherein H1Represents a third monitoring parameter corresponding to any one of n-1 sub-time units in the n sub-time units, T represents the first monitoring parameter, P represents the second monitoring parameter, min () represents a minimum value operation,
Figure BDA0002056453580000153
represents a ceiling operation; h2And representing a third monitoring parameter corresponding to a sub-time unit except the n-1 sub-time units in the n sub-time units.
For example: n-5, P-112, and T-28, wherein the third monitoring parameters corresponding to 4 of the 5 sub-time units are all the third monitoring parameters
Figure BDA0002056453580000154
The third monitoring parameter corresponding to another sub-time unit in the 5 sub-time units is
Figure BDA0002056453580000155
At this time, 23 × 4+20 is 112.
A second possible implementation:
the n sub-time units comprise K types of sub-time units, and each type of sub-time unit in the K types of sub-time units comprises at least one sub-time unit; k is an integer greater than 0; the K types of sub-time units are from the 1 st type of sub-time unit to the Kth type of sub-time unit in sequence from high to low according to the priority.
In the K sub-time units of the types, according to the sequence of the priority from high to low, the first monitoring parameter corresponding to each sub-time unit in the jth sub-time unit of the type is Tj；j＝1,2,··,K。
The third monitoring parameter corresponding to each sub-time unit in the sub-time unit of the type with the highest priority in the K types of sub-time units meets the following formula (4);
for the K types of sub-time units, the third monitoring parameters corresponding to each sub-time unit from the 2 nd type of sub-time unit to the Kth type of sub-time unit in sequence from high to low in priority satisfy the following formula (5);
formula (4): hj＝Tj
Formula (5):
Figure BDA0002056453580000156
wherein HjRepresenting a third monitoring parameter, j ═ 1,2, ·, K, corresponding to each sub time unit in the jth type of sub time unit according to the sequence from high to low in the K types of sub time units; p denotes the second listening parameter, Pj-1A sum of third monitoring parameters corresponding to each sub-time unit in all types of sub-time units with priorities greater than the jth type of sub-time unit in the K types of sub-time units, njRepresents the number of sub-time units, min ()It means that the minimum value is taken for operation,
Figure BDA0002056453580000157
indicating a rounding down operation.
The above equation (5) may also have various modifications, for example, the third listening parameter corresponding to n-1 sub time units of the n sub time units may further satisfy the following equation (6), and the third listening parameter corresponding to sub time units other than the n-1 sub time units of the n sub time units may further satisfy the following equation (7):
for the third monitoring parameters corresponding to each sub-time unit in the sub-time units of the type 2 to the sub-time unit of the type K-1 in sequence from high priority to low priority, the following formula (6) may also be satisfied;
aiming at n in the Kth type sub time unit with the lowest priority in the K type sub time unitsK-a third listening parameter for 1 sub-time unit satisfies the following formula (6), and the K-th sub-time unit with the lowest priority is divided by the nK-1 sub-time unit and the third listening parameter corresponding to the sub-time unit other than the sub-time unit may further satisfy the following formula (7), nKThe number of the sub-time units included in the Kth type sub-time unit with the lowest priority is as follows:
formula (6):
Figure BDA0002056453580000161
formula (7): h ═ P-PK-1-(nK-1)*HK
Wherein HjRepresenting a third monitoring parameter, j ═ 1,2, ·, K, corresponding to each sub time unit in the jth type of sub time unit according to the sequence from high to low in the K types of sub time units; p represents the first capacity value, Pj-1A third monitor indicating that each sub-time unit in all the sub-time units with the priority greater than the jth sub-time unit in the K sub-time units of the types corresponds toSum of listening parameters, PK-1The sum of third monitoring parameters corresponding to each sub-time unit from the 1 st type sub-time unit to the K-1 st type sub-time unit in sequence from high to low in priority in the K types of sub-time units is represented, and n isjRepresents the number of sub-time units included in the jth type of sub-time unit, min () represents a take minimum operation,
Figure BDA0002056453580000162
indicating a ceiling operation.
For example, two types are described as an example, the first type of sub-time unit is a sub-time unit including a common search space set (CSS set), and the second type of sub-time unit is a sub-time unit not including a CSS set. The sub-time units of the first type have a higher priority than the sub-time units of the second type. The first monitoring parameter corresponding to each sub-time unit in the first type of sub-time units is T1The first monitoring parameter corresponding to each sub-time unit in the sub-time units of the second type is T2. The number of sub-time units of the first type included in the first time unit is n1The number of the sub-time units of the second type included in the first time unit is n2，n1+n2＝n。
At this time, in the first time unit, when one sub-time unit is the sub-time unit of the first type, the third monitoring parameter corresponding to the sub-time unit is the first monitoring parameter T corresponding to the sub-time unit1；
When a sub-time unit is a sub-time unit of the second type, the third monitoring parameter corresponding to the sub-time unit is
Figure BDA0002056453580000163
Or is that
Figure BDA0002056453580000164
Or also can be
Figure BDA0002056453580000171
Wherein P is a second monitoring parameter corresponding to the first time unit.
A third possible implementation:
in the case that there is a second monitoring parameter corresponding to the first time unit, the first monitoring parameter corresponding to each of the n sub-time units may also be determined as a third monitoring parameter corresponding to each of the n sub-time units.
In this implementation manner, the network side device or the terminal side device directly determines the first monitoring parameter corresponding to the first sub-time unit as the third monitoring parameter corresponding to the first sub-time unit.
In this implementation manner, the n first monitoring parameters corresponding to the n sub-time units are predetermined by the network side device, and when the network side device determines the n first monitoring parameters, it is ensured that the sum of the n first monitoring parameters is not greater than the second monitoring parameter, so that the third monitoring parameter may not be determined any more.
In this scenario, the first sub-time unit may be a sub-time unit that prohibits performance of at least one of the first operation, the second operation, and the third operation.
Fig. 4 is a schematic structural diagram of a channel monitoring apparatus according to an embodiment of the present application. The apparatus may be configured to perform the actions of the terminal side device in the foregoing method embodiments, where the apparatus 400 includes: a processing unit 401 and a transceiving unit 402.
When the communication apparatus 400 executes the operation of the terminal side device in the flow shown in fig. 2:
a transceiving unit 402, configured to obtain a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit;
a processing unit 401, configured to monitor the downlink control channel according to the first monitoring parameter.
In a possible implementation manner, the first monitoring parameter is a predefined parameter;
or the first monitoring parameter is determined according to a first message from a network side device, where the first message indicates the first monitoring parameter for monitoring the downlink control channel.
In a possible implementation manner, the first monitoring parameter is determined by the network side device according to a preset maximum monitoring capability under the condition that the first monitoring parameter is determined according to a first message from the network side device;
the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
In a possible implementation manner, the transceiving unit 402 is further configured to:
sending a second message to a network side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any first monitoring capability in the at least one first monitoring capability, the first monitoring capability includes a maximum number of blind detections supported by the terminal side device for blind detection of the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel in the first sub-time unit;
the first listening parameter is one of the at least one first listening capability.
In a possible implementation manner, the at least one first monitoring capability is selected by the terminal-side device from a predefined plurality of monitoring capabilities.
In a possible implementation manner, the transceiving unit 402 is further configured to:
sending a third message to the network side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any one of the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit;
receiving a fourth message sent by the network side device according to the at least one first parameter, wherein the fourth message indicates the configuration of a search space where the downlink control channel is located;
the processing unit 401 is specifically configured to:
and monitoring the downlink control channel according to the first monitoring parameter and the fourth message.
In a possible implementation manner, the processing unit 401 is specifically configured to:
determining a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;
the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes the maximum detection times of the terminal side device for blindly detecting the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel;
and monitoring the downlink control channel according to the third monitoring parameter.
In a possible implementation manner, the transceiving unit 402 is further configured to:
receiving a fifth message from a network side device, where the fifth message indicates a location of the first sub-time unit in a first time unit in which the first sub-time unit is located.
Fig. 5 is a schematic structural diagram of an apparatus according to an embodiment of the present disclosure. The apparatus shown in fig. 5 may be a hardware circuit implementation of the apparatus shown in fig. 4. The communication device may be adapted to the flowchart shown in fig. 2, and perform the functions of the terminal side device in the above method embodiment. For ease of illustration, fig. 5 shows only the main components of the communication device. Optionally, the communication device may be a terminal-side device, or may be a device in the terminal-side device, such as a chip or a chip system, where the chip system includes at least one chip, and the chip system may further include other circuit structures and/or discrete devices. Optionally, taking the communication apparatus as a terminal-side device as an example, as shown in fig. 5, the apparatus 500 includes a processor 501, a memory 502, a transceiver 503, an antenna 504, and an input/output apparatus 505. The processor 501 is mainly used for processing the communication protocol and the communication data, controlling the whole wireless communication device, executing the software program, processing data of the software program, for example, for supporting the wireless communication device to perform the actions described in the above method embodiments. The memory 502 is primarily used to store software programs and data. The transceiver 503 is mainly used for converting baseband signals and radio frequency signals and processing radio frequency signals. The antenna 504 is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. The input/output device 505, such as a touch screen, a display screen, a keyboard, etc., is mainly used for receiving data input by a user and outputting data to the user.
The functions of the apparatus 500 shown in fig. 5 may specifically refer to the description in the flow shown in fig. 2, and are not described again here.
Fig. 6 is a schematic structural diagram of a channel monitoring apparatus according to an embodiment of the present application. The apparatus may be configured to perform the actions of the network side device in the foregoing method embodiments, where the apparatus 600 includes: a processing unit 601 and a transceiving unit 602.
A transceiving unit 602, configured to obtain a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit;
a processing unit 601, configured to configure, according to the first monitoring parameter, a maximum blind detection frequency of a terminal side device for blind detection of a downlink control channel in a first sub-time unit, and/or a maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit.
In a possible implementation manner, the first listening parameter is a predefined parameter.
In a possible implementation manner, the first monitoring parameter is determined according to a preset maximum monitoring capability;
the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
In a possible implementation manner, the processing unit 601 is specifically configured to:
determining a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;
the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes a maximum detection number of times that the terminal side device blindly detects the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel.
In a possible implementation manner, the transceiver unit 602 is further configured to:
sending a fifth message to the terminal side device, the fifth message indicating a location of the first sub-time unit in a first time unit in which the first sub-time unit is located.
In a possible implementation manner, the method further includes: the network side device receives a second message from the terminal side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any one of the at least one first monitoring capability, the first monitoring capability includes a maximum number of blind detections supported by the terminal side device for the blind detection of the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs supported by the terminal side device for channel estimation of the downlink control channel in the first sub-time unit; and the network side equipment determines the first monitoring parameter according to the at least one first monitoring capability.
In a possible implementation manner, the method further includes: the at least one first listening capability is selected by the terminal side device from a predefined plurality of listening capabilities.
In a possible implementation manner, the apparatus further includes:
the network side device receives a third message from the terminal side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any one of the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit;
and the network side equipment sends a fourth message to the terminal side equipment according to the at least one first parameter, wherein the fourth message indicates the configuration of the search space where the downlink control channel is located.
In a possible implementation manner, the first sub-time unit is a sub-time unit that prohibits at least one of the first operation, the second operation, and the third operation from being performed;
wherein the first operation is to determine a number of blind detections for blind detection of a downlink control channel in the first sub-time unit; a second operation of determining the number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first sub-time unit; the third operation is configured to determine whether a number of blind detections for blind-detecting the downlink control channel in the first sub-time unit is greater than a maximum number of blind detections for the first time unit, and/or determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than a maximum number of CCEs for the first time unit.
Fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in fig. 7 may be a hardware circuit implementation of the communication device shown in fig. 6. The communication device may be adapted to the flowchart shown in fig. 2, and performs the functions of the network side device in the above method embodiment. For ease of illustration, fig. 7 shows only the main components of the communication device. Optionally, the communication device may be a network-side device, or may be a device in a network-side device, such as a chip or a chip system, where the chip system includes at least one chip, and the chip system may further include other circuit structures and/or discrete devices. Optionally, taking the communication apparatus as a network side device as an example, as shown in fig. 7, the communication apparatus 700 includes a processor 701, a memory 702, a transceiver 703, an antenna 704, and the like.
The functions of the communication apparatus 700 shown in fig. 7 may specifically refer to the description in the flow shown in fig. 2, and are not described again here.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or 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, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (30)

1. A method for channel sensing, comprising:
the terminal side equipment acquires a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit;
and the terminal side equipment monitors the downlink control channel according to the first monitoring parameter.
2. The method of claim 1, wherein the first listening parameter is a predefined parameter;
or the first monitoring parameter is determined by the terminal side device according to a first message from a network side device, where the first message indicates the first monitoring parameter for monitoring the downlink control channel.
3. The method according to claim 2, wherein the first monitoring parameter is determined by the network side device according to a preset maximum monitoring capability, if the first monitoring parameter is determined by the terminal side device according to a first message from the network side device;
the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
4. The method of claim 1, further comprising:
the terminal side device sends a second message to a network side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any first monitoring capability in the at least one first monitoring capability, the first monitoring capability includes the maximum blind detection times supported by the terminal side device for blind detection of the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs supported by the terminal side device for channel estimation of the downlink control channel in the first sub-time unit;
the first listening parameter is one of the at least one first listening capability.
5. The method of claim 4, further comprising:
the at least one first listening capability is selected by the terminal side device from a predefined plurality of listening capabilities.
6. The method according to claim 4 or 5, wherein the terminal side device sends a third message to the network side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any first parameter in the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit;
the terminal side equipment receives a fourth message sent by the network side equipment according to the at least one first parameter, wherein the fourth message indicates the configuration of a search space where the downlink control channel is located;
the monitoring, by the terminal side device, the downlink control channel according to the first monitoring parameter includes:
and the terminal side equipment monitors the downlink control channel according to the first monitoring parameter and the fourth message.
7. The method of any of claims 1 to 6, wherein the first sub-time unit is a sub-time unit that prohibits performance of at least one of a first operation, a second operation, and a third operation;
wherein the first operation is to determine a number of blind detections for blind detection of a downlink control channel in the first sub-time unit; a second operation of determining the number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first sub-time unit; the third operation is configured to determine whether a number of blind detections for blind-detecting the downlink control channel in the first sub-time unit is greater than a maximum number of blind detections for the first time unit, and/or determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than a maximum number of CCEs for the first time unit.
8. The method according to any one of claims 1 to 7, wherein the monitoring, by the terminal side device, the downlink control channel according to the first monitoring parameter includes:
the terminal side equipment determines a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;
the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes the maximum detection times of the terminal side device for blindly detecting the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel;
and the terminal side equipment monitors the downlink control channel according to the third monitoring parameter.
9. The method of any of claims 1 to 8, further comprising:
and the terminal side equipment receives a fifth message from the network side equipment, wherein the fifth message indicates the position of the first sub-time unit in the first time unit where the first sub-time unit is located.
10. A method for channel sensing, comprising:
the network side equipment acquires a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit;
and the network side equipment configures the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first sub-time unit according to the first monitoring parameter, and/or the maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit.
11. The method of claim 10, wherein the first listening parameter is a predefined parameter.
12. The method of claim 10, wherein the first listening parameter is determined by the network side device according to a preset maximum listening capability;
the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
13. The method of claim 10, further comprising:
the network side device receives a second message from the terminal side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any one of the at least one first monitoring capability, the first monitoring capability includes a maximum number of blind detections supported by the terminal side device for the blind detection of the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs supported by the terminal side device for channel estimation of the downlink control channel in the first sub-time unit;
and the network side equipment determines the first monitoring parameter according to the at least one first monitoring capability.
14. The method of claim 13, further comprising:
the at least one first listening capability is selected by the terminal side device from a predefined plurality of listening capabilities.
15. The method of claim 13 or 14, wherein the method further comprises:
the network side device receives a third message from the terminal side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any one of the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit;
and the network side equipment sends a fourth message to the terminal side equipment according to the at least one first parameter, wherein the fourth message indicates the configuration of the search space where the downlink control channel is located.
16. The method according to any one of claims 10 to 15, wherein the configuring, by the network side device, the maximum blind detection times for the terminal side device to blindly detect the downlink control channel in the first sub-time unit according to the first monitoring parameter, and/or the maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit, includes:
the network equipment determines a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;
the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes a maximum detection number of times that the terminal side device blindly detects the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel.
17. The method of any of claims 10 to 16, further comprising:
and the network side equipment sends a fifth message to the terminal side equipment, wherein the fifth message indicates the position of the first sub time unit in the first time unit where the first sub time unit is located.
18. An apparatus for channel sensing, comprising:
the receiving and sending unit is used for acquiring a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit;
and the processing unit is used for monitoring the downlink control channel according to the first monitoring parameter.
19. The apparatus of claim 18, wherein the first listening parameter is a predefined parameter;
or the first monitoring parameter is determined according to a first message from a network side device, where the first message indicates the first monitoring parameter for monitoring the downlink control channel.
20. The apparatus of claim 19, wherein the first monitoring parameter is determined by a network side device according to a preset maximum monitoring capability if the first monitoring parameter is determined by a first message from the network side device;
the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
21. The apparatus as recited in claim 18, said transceiver unit to further:
sending a second message to a network side device, where the second message indicates at least one first monitoring capability supported by a downlink control channel, and for any first monitoring capability in the at least one first monitoring capability, the first monitoring capability includes a maximum number of blind detections supported by the terminal side device for blind detection of the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel in the first sub-time unit;
the first listening parameter is one of the at least one first listening capability.
22. The apparatus of claim 21, wherein the at least one first listening capability is selected by the terminal-side device from a predefined plurality of listening capabilities.
23. The apparatus of claim 21 or 22, wherein the transceiver unit is further configured to:
sending a third message to the network side device, where the third message indicates at least one first parameter corresponding to the at least one first monitoring capability, and for any one of the at least one first parameter, the first parameter includes a minimum time domain interval of every two sub-time units in a time unit where the first sub-time unit is located and a maximum time domain length included in each sub-time unit;
receiving a fourth message sent by the network side device according to the at least one first parameter, wherein the fourth message indicates the configuration of a search space where the downlink control channel is located;
the processing unit is specifically configured to:
and monitoring the downlink control channel according to the first monitoring parameter and the fourth message.
24. The apparatus according to any one of claims 18 to 23, wherein the processing unit is specifically configured to:
determining a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;
the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes the maximum detection times of the terminal side device for blindly detecting the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel;
and monitoring the downlink control channel according to the third monitoring parameter.
25. The apparatus according to any of claims 18 to 24, wherein the transceiver unit is further configured to:
receiving a fifth message from a network side device, where the fifth message indicates a location of the first sub-time unit in a first time unit in which the first sub-time unit is located.
26. An apparatus for channel sensing, comprising:
the receiving and sending unit is used for acquiring a first monitoring parameter; the first monitoring parameter includes the maximum blind detection times of blind detection on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping Control Channel Elements (CCEs) used for performing channel estimation on the downlink control channel in the first sub-time unit;
and a processing unit, configured to configure, according to the first monitoring parameter, a maximum blind detection frequency of blind detection of the terminal-side device on the downlink control channel in a first sub-time unit, and/or a maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit.
27. The apparatus of claim 26, wherein the first listening parameter is a predefined parameter.
28. The apparatus of claim 26, wherein the first listening parameter is determined according to a preset maximum listening capability;
the preset maximum monitoring capability includes a preset maximum blind detection frequency supported by blind detection of the downlink control channel in a sub-time unit, and/or a preset maximum number of non-overlapping CCEs supported by channel estimation of the downlink control channel in the first sub-time unit.
29. The apparatus according to any one of claims 26 to 28, wherein the processing unit is specifically configured to:
determining a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;
the second monitoring parameter is the maximum blind detection times of the terminal side equipment for blind detection of the downlink control channel in a first time unit including the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in the first time unit; the third monitoring parameter includes a maximum detection number of times that the terminal side device blindly detects the downlink control channel in the first sub-time unit, and/or a maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel.
30. The apparatus according to any of claims 26 to 29, wherein the transceiver unit is further configured to:
sending a fifth message to the terminal side device, the fifth message indicating a location of the first sub-time unit in a first time unit in which the first sub-time unit is located.
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