WO2020228459A1 - Channel monitoring method and apparatus - Google Patents

Abstract

Embodiments of the present application provide a channel monitoring method and apparatus. The method comprises: a terminal side device obtains a first monitoring parameter, the first monitoring parameter comprises the maximum number of times that blind detection is performed on a downlink control channel in a first sub-time unit, and/or the maximum number of non-overlapping control channel elements (CCEs) for performing channel estimation on the downlink control channel in the first sub-time unit; and the terminal side device monitors the downlink control channel according to the first monitoring parameter. By means of the method, the terminal side device determines, according to the obtained first monitoring parameter, the maximum number of times that blind detection is performed on the downlink control channel in the first sub-time unit, and/or the maximum number of non-overlapping CCEs for performing channel estimation on the downlink control channel in the first sub-time unit, so that the downlink control channel is monitored in a sub-time unit having smaller granularity than a timeslot.

Description

Channel monitoring method and device

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910390904.2, and the application name is "a channel monitoring method and device" on May 10, 2019, the entire content of which is incorporated into this application by reference .

Technical field

This application relates to the field of communication technology, and in particular to a channel monitoring method and device.

Background technique

In the communication system, the network side device may send downlink control information (downlink control information, DCI) to the terminal side device through a physical downlink control channel (PDCCH). The network side device can configure the search space set (search space set) corresponding to each DCI to the terminal side device through high-level signaling, but does not notify the terminal side device which PDCCH candidate (candidate) in the search space set will be sent on DCI. The terminal-side device can determine the DCI currently expected to receive according to the configuration information sent by the network-side device, so the terminal-side device can perform channel estimation on the PDCCH candidates in the search space set corresponding to the DCI to be received according to the configuration information, and monitor (monitor) Whether the PDCCH candidates carry DCI. Due to the high complexity of detection, the terminal-side equipment consumes a lot of power consumption. For this reason, in a new radio (NR) system, you can set the number of times the terminal-side equipment detects DCI in a slot. The maximum value, and the maximum value of the number of control channel elements (CCE) used for channel estimation.

In the NR system, a sub-time unit smaller than the granularity of the time slot is introduced: time span (span), which can also be called monitoring span, etc. For the convenience of description, it is called in the embodiments of this application. time span.

At present, when there are sub-time units with a granularity smaller than the time slot, how the terminal-side device monitors the downlink control channel does not have a clear solution, which is an urgent problem to be solved.

Summary of the invention

The embodiments of the present application provide a channel monitoring method and device to solve the problem of how the terminal-side device monitors the downlink control channel.

In a first aspect, an embodiment of the present application provides a channel monitoring method. The method includes: a terminal-side device obtains a first monitoring parameter; the first monitoring parameter includes a maximum value of blind detection of a downlink control channel in a first sub-time unit The number of blind detections, and/or the maximum number of non-overlapping control channel elements CCEs used for channel estimation of the downlink control channel in the first sub-time unit; the terminal-side device is based on the first The monitoring parameter monitors the downlink control channel.

Through the above method, the terminal-side device determines the maximum number of 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 uses it in the first sub-time unit For the maximum number of non-overlapping CCEs for channel estimation of the downlink control channel, the terminal-side device can then perform the downlink control based on the determined maximum number of blind detections and/or the maximum number of non-overlapping CCEs in the first sub-time unit. The control channel is monitored, so that the downlink control channel can be monitored in sub-time units smaller than the time slot.

In a possible implementation, 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 the network-side device, and the first The 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 terminal-side device according to the first message from the network-side device, the first monitoring parameter is the network-side device according to a preset maximum The monitoring capability is determined; the preset maximum monitoring capability includes the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit The preset maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel.

In a possible implementation manner, the method further includes: the terminal-side device sends a second message to the network-side device, the second message indicating at least one first listening capability supported by the downlink control channel, for the at least one Any one of the first monitoring capabilities, where the first monitoring capability includes the 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, the maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel in the first sub-time unit; the first monitoring parameter is the at least one first monitoring capability One of the first monitoring capabilities.

Through the above method, the first monitoring parameter is determined from at least one first monitoring capability supported by the terminal-side device, so the maximum number of blind detections configured in the first sub-time unit can be guaranteed, and/or the non-overlapping CCE The maximum number is within the range of capabilities supported by the terminal-side device to avoid waste caused by over-configuration.

In a possible implementation manner, it further includes: the at least one first monitoring capability is selected by the terminal side device from a plurality of predefined monitoring 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, for the Any one of at least one first parameter, where the first parameter includes the minimum time domain interval of every two sub-time units in the time unit in which the first sub-time unit is located and the maximum time interval contained in each sub-time unit Time domain length;

The terminal-side device receives a fourth message sent by the network-side device according to the at least one first parameter, where the fourth message indicates the configuration of the search space where the downlink control channel is located; the terminal-side device The first monitoring parameter monitoring the downlink control channel includes: the terminal side device monitoring the downlink control channel according to the first monitoring parameter and the fourth message.

In a possible implementation, the first sub-time unit is a sub-time unit that prohibits performing at least one of the first operation, the second operation, and the third operation; wherein, the first operation is used to determine The number of blind detections of the downlink control channel in the first sub-time unit; the second operation is used to determine 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 used to determine whether the number of blind detections for blindly detecting the downlink control channel in the first sub-time unit is greater than the maximum number of blind detections corresponding to the first time unit, and/or, It is used to determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than the maximum number of CCEs corresponding to the first time unit.

In a possible implementation, the terminal-side device monitoring the downlink control channel according to the first monitoring parameter includes: the terminal-side device determining the first monitoring parameter according to the first monitoring parameter and the second monitoring parameter Three monitoring parameters; wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device 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; the third monitoring parameter includes the blind detection of the terminal-side device in the first sub-time unit The maximum number of detections of the downlink control channel, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel; the terminal-side device monitors the downlink according to the third monitoring parameter Control channel for monitoring.

Through the above method, the terminal-side device determines the third parameter according to the first monitoring parameter and the second parameter, which can ensure that the sum of the third parameters corresponding to all sub-time units in the first time unit is less than or equal to the second parameter, and avoids the maximum The number of blind detections, and/or the maximum number of non-overlapping CCEs is over-configured.

In a possible implementation manner, the method further includes: the terminal-side device receives a fifth message from the network-side device, the fifth message indicating that the first sub-time unit is in the first sub-time unit The position in the first time unit.

Through the above method, the position of the first sub-time unit can be indicated through the fifth message, so that the terminal-side device can accurately determine the sub-time unit corresponding to the first monitoring parameter.

In the second aspect, this application provides a device. The device has the function of realizing the terminal-side device involved in the first aspect. For example, the device includes a module or unit or means corresponding to the terminal-side device executing the steps involved in the first aspect, the function Or the unit or means (means) can be implemented by software, or by hardware, or by hardware executing corresponding software.

In a possible design, the device includes a processing unit and a transceiving unit, and the functions performed by the processing unit and the transceiving unit may correspond to the steps performed by the terminal-side device involved in the above-mentioned first aspect.

In a possible design, the device includes a processor, and may also include a transceiver. The transceiver is used to send and receive signals, and the processor executes program instructions to complete any possible design or implementation in the first aspect. The method executed by the terminal-side device in the mode.

Wherein, the apparatus may further include one or more memories, and the memories are used for coupling with the processor. The one or more memories may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.

In a possible manner, the memory stores necessary computer program instructions and/or data for realizing the functions of the terminal-side device involved in the first aspect. The processor can execute the computer program instructions stored in the memory to complete the method executed by the terminal-side device in any possible design or implementation of the first aspect.

In a third aspect, an embodiment of the present application provides a channel monitoring method, including: a network side device obtains a first monitoring parameter; the first monitoring parameter includes the maximum blind detection of the blind detection of the downlink control channel in the first sub-time unit The number of times, and/or, the maximum number of non-overlapping control channel elements CCEs used for channel estimation of the downlink control channel in the first sub-time unit; the network side device according to the first monitoring parameter Configure the maximum number of blind detection times for the blind detection of the downlink control channel by the terminal-side device in the first sub-time unit, and/or the number of non-overlapping CCEs that perform channel estimation on the downlink control channel in the first sub-time unit The maximum number.

Through the above method, the network side device determines the maximum number of 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 uses it in the first sub-time unit The maximum number of non-overlapping CCEs for channel estimation of the downlink control channel, so as to realize the configuration of the maximum number of blind detections and/or non-overlapping CCEs for the terminal-side equipment in sub-time units with a smaller granularity than the time slot The maximum number.

In a possible implementation manner, the first monitoring 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 blinding the downlink control channel in a sub-time unit. The preset maximum number of blind detections supported by the detection, and/or the preset maximum number of non-overlapping CCEs supported in the first sub-time unit for channel estimation of the downlink control channel.

In a possible implementation manner, the method further includes: the network side device receives a second message from the terminal side device, the second message indicating at least one first monitoring capability supported by the downlink control channel, and Any one of the at least one first monitoring capability, where the first monitoring capability includes the maximum blindness supported by the terminal-side device for blind detection of the downlink control channel in the first sub-time unit The number of detections, and/or the maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel in the first sub-time unit; the network side device is based on the at least one first The monitoring capability determines the first monitoring parameter.

Through the above method, the first monitoring parameter is determined from at least one first monitoring capability supported by the terminal-side device, so the maximum number of blind detections configured in the first sub-time unit can be guaranteed, and/or the non-overlapping CCE The maximum number is within the range of capabilities supported by the terminal-side device to avoid waste caused by over-configuration.

In a possible implementation manner, it further includes: the at least one first monitoring capability is selected by the terminal side device from a plurality of predefined monitoring capabilities.

In a possible implementation manner, the method further includes: the network side device receiving a third message from the terminal side device, the third message indicating at least one first message corresponding to the at least one first monitoring capability A parameter, for any one of the at least one first parameter, the first parameter includes the minimum time domain interval of every two sub-time units in the time unit where the first sub-time unit is located and each sub-time unit The maximum time domain length included in the time unit; the network side device sends a fourth message to the terminal side device according to the at least one first parameter, the fourth message indicating the configuration of the search space where the downlink control channel is located .

In a possible implementation, the first sub-time unit is a sub-time unit that prohibits performing at least one of the first operation, the second operation, and the third operation; wherein, the first operation is used to determine The number of blind detections of the downlink control channel in the first sub-time unit; the second operation is used to determine 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 used to determine whether the number of blind detections for blindly detecting the downlink control channel in the first sub-time unit is greater than the maximum number of blind detections corresponding to the first time unit, and/or, It is used to determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than the maximum number of CCEs corresponding to the first time unit.

In a possible implementation manner, the network side device configures the maximum number of blind detection times for the downlink control channel blind detection of the terminal side device in the first sub-time unit according to the first listening parameter, and/or, in the 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 device determines a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter; wherein, the second monitoring parameter is the first time unit of the terminal-side device including the first sub-time unit The maximum number of blind detection times for the blind detection of the downlink control channel in the first 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 The parameters include the maximum number of times of blind detection of the downlink control channel by the terminal-side device in the first sub-time unit, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel number.

In a possible implementation, the method further includes: the network-side device sends a fifth message to the terminal-side device, the fifth message indicating that the first sub-time unit is in the first sub-time The location in the first time unit where the unit is located.

Through the above method, the position of the first sub-time unit can be indicated through the fifth message, so that the terminal-side device 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:

The network-side device receives a second message from the terminal-side device, the second message indicating at least one first monitoring capability supported by the downlink control channel, for any one of the at least one first monitoring capability The first monitoring capability includes the 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, in the first sub-time unit The maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel; the network side device determines the first monitoring parameter according to the at least one first monitoring capability.

In a possible implementation, the network-side device determining the first monitoring parameter according to the at least one first monitoring capability includes: the network-side device selecting a first monitoring parameter from the at least one first monitoring capability Capability is the first monitoring parameter.

In the fifth aspect, this application provides a device. The apparatus has the function of realizing the network-side equipment involved in the third aspect or the fourth aspect. For example, the apparatus includes a module or unit corresponding to the network-side equipment executing the steps involved in the third or fourth aspect. Means. The functions or units or means can be implemented by software, or by hardware, or by hardware executing corresponding software.

In a possible design, the device includes a processing unit, a transceiving unit, and the functions performed by the processing unit and transceiving unit can be the same as the network side equipment involved in any possible design or implementation in the third aspect or the fourth aspect. The steps performed correspond to those.

In another possible design, the communication device includes a processor, and may also include a transceiver. The transceiver is used to send and receive signals, and the processor executes program instructions to complete the third aspect or the fourth aspect. The method executed by the network side device in any possible design or implementation.

Wherein, the apparatus may further include one or more memories, and the memories are used for coupling with the processor. The one or more memories may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.

In a possible manner, the memory stores the necessary computer program instructions and/or data for realizing the functions of the network side device involved in any possible design or implementation manner of the third aspect or the fourth aspect. The processor can execute the computer program instructions stored in the memory to complete the method executed by the network side device in any possible design or implementation of the third aspect or the fourth aspect.

The embodiment of the present application provides a computer-readable storage medium that stores computer-readable instructions. When the computer reads and executes the computer-readable instructions, the computer can execute any of the above-mentioned possible designs. Method in.

The embodiments of the present application provide a computer program product. When a computer reads and executes the computer program product, the computer is caused to execute any of the above-mentioned possible design methods.

The embodiment of the present application provides a chip, which is connected to a memory, and is used to read and execute a software program stored in the memory, so as to implement any of the above-mentioned possible design methods.

An embodiment of the present application provides a communication system, including any of the foregoing possible terminal-side devices and any of the foregoing possible network-side devices.

Description of the drawings

FIG. 1 is a schematic diagram of a communication system applicable to the method provided in the embodiment of the present application;

2 is a schematic flowchart of a channel monitoring method provided by an embodiment of this application;

FIG. 3 is a schematic diagram of a time unit provided by an embodiment of this application;

4 is a schematic structural diagram of a channel monitoring device provided by an embodiment of the application;

5 is a schematic structural diagram of a channel monitoring device provided by an embodiment of the application;

6 is a schematic structural diagram of a channel monitoring device provided by an embodiment of the application;

FIG. 7 is a schematic structural diagram of a channel monitoring device provided by an embodiment of the application.

Detailed ways

The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings of the specification.

The embodiments of this application can be applied to various mobile communication systems, such as: new radio (NR) system, long term evolution (LTE) system, advanced long term evolution (LTE-A) Systems, evolved long term evolution (evolved long term evolution, eLTE) systems, future communication systems, and other communication systems, are specifically not limited here.

To facilitate the understanding of the embodiments of the present application, first, the communication system shown in FIG. 1 is taken as an example to describe in detail the communication system applicable to the embodiments of the present application. Fig. 1 shows a schematic diagram of a communication system applicable to 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. 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 send DCI to the terminal-side device 106 through the PDCCH. The DCI of different terminal-side devices are distinguished by their corresponding cell radio network temporary identity (C-RNTI), that is, the DCI of different terminal-side devices is determined by the cyclic redundancy check (CRC). The C-RNTI of the terminal side device is scrambled. Since the terminal device does not know which PDCCH candidate or PDCCH candidates the network device will receive DCI on, the terminal device must try to decode each PDCCH candidate in the search space set corresponding to the DCI, that is, the terminal device uses the The C-RNTI of the terminal-side device performs a CRC check on the information carried on the PDCCH candidate. If the CRC check is successful, the terminal-side device determines that the DCI is successfully received. The behavior of the terminal-side device trying to decode each PDCCH candidate to determine whether the corresponding DCI is received can also be called blind detection (BD) PDCCH.

In the embodiment of the present application, the terminal-side device is a device with a wireless transceiver function or a chip that can be installed in the device. Wherein, the device with wireless transceiver function may also be called user equipment (UE), access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile equipment, user terminal, user agent Or user device. In practical applications, the terminal-side devices in the embodiments of the present application may be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminals, augmented reality (augmented) Reality, AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, and wireless terminals in smart grid (smart grid) , Wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiment of this application does not limit the application scenario. In this application, the aforementioned devices with wireless transceiver functions and chips that can be installed in the devices are collectively referred to as terminal-side devices.

In the embodiments of the present application, the network side device may be a wireless access device under various standards, such as an evolved Node B (eNB), a radio network controller (RNC), or a Node B (Node B). B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), the access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP) in the wireless fidelity (WIFI) system It can also be the gNB or transmission point (TRP or TP) in the 5G (NR) system, one or a group of antenna panels (including multiple antenna panels) of the base station in the 5G system, or it can also constitute a gNB or The network node of the transmission point, such as a baseband unit (BBU), or a DU under a centralized unit-distributed (CU-DU) architecture.

Hereinafter, some terms in this application are explained to facilitate the understanding of those skilled in the art.

Symbols, including but not limited to orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols, Sparse Code Multiple Access (SCMA) symbols, and filtered Orthogonal Frequency Division Multiplexing (Filtered Orthogonal Frequency Division) symbols Multiplexing (F-OFDM) symbols and non-orthogonal multiple access (Non-Orthogonal Multiple Access, NOMA) symbols can be specifically determined according to actual conditions and will not be repeated here.

Time slot: A time slot refers to a basic unit of time that occupies multiple consecutive OFDM symbols in the time domain. For example, in LTE, a slot occupies 6 or 7 consecutive OFDM symbols in the time domain; in NR, a slot occupies 14 consecutive OFDM symbols (regular cyclic prefix) or consecutive OFDM symbols in the time domain. 12 OFDM symbols (extended cyclic prefix).

Aggregation level (AL): The number of CCEs contained in one PDCCH is called the aggregation level of this PDCCH. For example, if the PDCCH includes 4 CCEs, then the aggregation level of the PDCCH is 4.

PDCCH candidates: The standard protocol specifies the number of PDCCH candidates for each aggregation level, that is, the possible time-frequency resource positions of the PDCCH.

Control Resource Set (CORESET): The concept proposed in the NR system can be understood as a time-frequency resource set. In the time domain, a CORESET can be configured as one or several consecutive OFDM symbols; in the frequency domain, a CORESET can be a group of continuous or non-contiguous frequency domain resources, including search spaces under different aggregation levels .

Search space: All PDCCH candidates corresponding to a given aggregation level in a CORESET form a search space. The sum of search spaces corresponding to all aggregation levels corresponding to one DCI can be referred to as a search space set.

Time span: a unit of time shorter than slot. The length of each span is at least Y consecutive OFDM symbols, and Y is an integer greater than zero. Among them, Y consecutive OFDM symbols are continuous in the time domain (there is no more than 1 OFDM symbol interval). Currently, span is subject to the following rules:

1. There cannot be overlapping symbols between spans, that is, a symbol cannot belong to two spans at the same time.

2. Each span is contained in a separate slot, that is, the span cannot cross the boundary of the slot.

3. Each PDCCH monitoring occasion (MO) is completely contained in one span. That is, one MO cannot cross the span boundary. The MO here represents the duration of the blind detection of the PDCCH by a terminal-side device, which is jointly determined by a monitoring start position and the CORESET bound to this search space collection. For example, the terminal-side device monitors a search space set whose monitoring start position is the first symbol in a slot, and this search space set is bound to a 3-symbol CORESET, so the MO that monitors this search space set is The first 3 symbols of the slot in which they are located, namely the first symbol, the second symbol and the third symbol.

4. For all PDCCH MOs in a slot, the number of different start symbols of the span cannot exceed floor (14/X), where X is the minimum number of reported capabilities of the terminal side device. floor() means round down operation.

5. The number of different start symbols of different PDCCH and MO in a slot cannot exceed 7.

6. In the secondary cell, the number of different start symbols of the PDCCH MO in a half slot cannot exceed 4.

The division of the span in a slot is determined by the protocol preset or the base station uses high-level parameters configuration or the user divides it according to the protocol preset rules and high-level parameters. A span is composed of several symbols, and the length of each span in a slot can be the same or can be Different. For example, some spans in a slot are 7 symbols in length, and some spans are 1 or 2 symbols in length.

The time unit may refer to a time unit such as a time slot. A sub-time unit may refer to a unit smaller than the length of a time slot, for example, it may refer to a symbol, a time span, a half-slot or a sub-slot unit, etc. Different time units in a time slot may correspond to the same upper limit of monitoring capability or may correspond to different upper limits of monitoring capability. Different time units in a time slot can correspond to different upper monitoring capabilities. It can be understood that the time unit corresponding to the maximum monitoring capability upper limit is the first type of span, and the time unit corresponding to the second largest monitoring capability upper limit is the second Class span, and so on. That is, different spans are associated with upper limit values of monitoring capabilities of different sizes, so that from the perspective of upper limit values of monitoring capabilities of different sizes, the first type of span, the second type of span, etc. can be implicitly determined.

The network architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

Refer to FIG. 2, which is a schematic flowchart of a channel monitoring method provided by an embodiment of this application.

The method includes:

Step 201: The network side device obtains the first monitoring parameter;

Step 202: The network side device configures the maximum number of blind detection times for the downlink control channel blind detection of the terminal side device in the first sub-time unit according to the first monitoring parameter, and/or, in the first sub-time unit The maximum number of non-overlapping CCEs for which the downlink control channel performs channel estimation.

The downlink control channel may refer to the PDCCH, or may refer to the enhanced physical downlink control channel (ePDCCH), etc., which is not limited in the embodiment of the present application.

Step 203: The terminal-side device acquires a first monitoring parameter; the first monitoring parameter includes the maximum number of blind detections for the downlink control channel blind detection in the first sub-time unit, and/or, in the first sub-time unit The maximum number of non-overlapping control channel elements CCEs used for channel estimation of the downlink control channel in;

Step 204: The terminal side device 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, and the first sub-time unit may be any sub-time unit of the n sub-time units, n is an integer greater than zero.

In the embodiment of the present 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 the first possible implementation manner, the first listening parameter is a predefined parameter.

Exemplarily, in this implementation manner, the first monitoring parameter may be a parameter pre-appointed 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 parameter corresponding to any terminal side device is the same.

Exemplarily, in this implementation manner, the first monitoring parameter may also be a first monitoring capability selected by the terminal-side device from at least one first monitoring capability of the terminal-side device according to a predefined rule.

It should be noted that the ability reported by the terminal-side device is one or more of the predefined capabilities of the protocol, not the ability to report randomly.

For example, as shown in Table 2 below, the configuration of the time span supported by the terminal-side device is (2, 2). At this time, the terminal-side device supports the first monitoring capability as M _3,1 , M _3,2 and M _3,3 etc. The terminal-side device can report one or more of M _3,1 , M _3,2 and M _3,3 to the network-side device.

Wherein, each first monitoring capability indicates what capability the terminal-side device has in the first sub-time unit. Specifically, for any one of the at least one first monitoring capability, the first monitoring capability is A monitoring capability includes the 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, used in the first sub-time unit for The maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation. For example, the maximum number of blind detections included in the first monitoring capability is 44, and the maximum number of non-overlapping CCEs included is 16, which means that the terminal-side device can perform a maximum of 44 downlink blind detections in the first sub-time unit. For the control channel, at most 16 non-overlapping CCEs are used when channel estimation is performed on the downlink control channel in the first sub-time unit.

After the terminal-side device selects a first monitoring capability from at least one first monitoring capability supported by the terminal-side device among the one or several capabilities predefined by the protocol as the first monitoring parameter, it may send the first monitoring parameter to Network side equipment.

The terminal-side device may also send a second message to the network-side device, the second message indicating at least one first monitoring capability supported by the downlink control channel. The network-side device then uses a predefined rule to select one first monitoring capability from the at least one first monitoring capability as the first monitoring parameter.

For example, if the predefined rule is to select the largest capability, the terminal-side device and the network-side device both use the largest capability among at least one of the first listening capabilities as the first listening parameter; or the predefined rule is to select the smallest Capability, the terminal-side device and the network-side device both use the smallest capability as the first monitoring parameter.

It should be noted that the at least one first monitoring capability used to determine the first monitoring parameter may be only a part of the multiple predefined monitoring capabilities of the terminal-side device, that is, the at least one first monitoring capability is the terminal The side device selects from multiple predefined monitoring capabilities, and the specific selection is not limited in this embodiment of the application.

In the second possible implementation manner, the first monitoring parameter is a parameter determined by the network side device.

In this implementation manner, the terminal side device can send the second message to the network side device. The network-side device selects a first monitoring capability from the at least one first monitoring capability indicated by the second message as the first monitoring parameter, and sends a first message to the terminal-side device, the first message indicating that the downlink control channel is monitored The first monitoring parameter.

For example, as shown in Table 1 below, the terminal-side device supports time span configurations as (1,1), (2,1), and (2,2). At this time, the terminal-side device can report three first Monitoring capabilities: M ₁ , M ₂ and M ₃ . The network side device may use the largest first monitoring capability as the first monitoring parameter, or the smallest first monitoring capability as the first monitoring parameter, or randomly select a first monitoring capability as the first monitoring parameter. The embodiment does not limit this.

For example, as shown in Table 1 below, the terminal-side device supports time span configurations as (1,1), (2,1), and (2,2). At this time, the terminal-side device can report the time span configuration There are three first monitoring capabilities corresponding to (2, 2): M _3,1 , M _3,2 and M _3,3 . The network side device may use the largest first monitoring capability as the first monitoring parameter, or the smallest first monitoring capability as the first monitoring parameter, or randomly select a first monitoring capability as the first monitoring parameter. The embodiment does not limit this.

The network side device selects multiple first listening capabilities from at least one first listening capability indicated by the second message as the first listening parameter. For example, the terminal side device reports three first listening capabilities: M ₁ , M ₂ and M ₃ . The network side device may use M ₁ and M ₂ as the first monitoring parameters. If there are 3 spans, M _{1 can} correspond to the first span, and M _{2 can} correspond 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 the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit, used to monitor the The preset maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation.

It should be noted that the preset maximum monitoring capability is not reported by the terminal-side device, but a value pre-specified by the protocol, which can be applied to all terminal-side devices. The at least one first monitoring capability indicated by the second message sent by the terminal-side device is the capability of the terminal-side device according to itself.

In this implementation manner, 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, the third message indicating the at least one first monitoring capability At least one first parameter corresponding to a monitoring capability, for any first parameter in the at least one first parameter, the first parameter includes every two sub-times in the time unit where the first sub-time unit is located The minimum time domain interval of a unit and the maximum time domain length contained in each sub-time unit.

The network side device may select a first listening capability from at least one first listening capability corresponding to the at least one first parameter as the first listening parameter, and send it to the terminal side device.

For example, each first parameter can be expressed as (X, Y), where X is the 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 the time domain where the first sub-time unit is located. The maximum time domain length contained in each sub-time unit in the time unit. The corresponding relationship between the first listening capability and the first parameter may be as shown in Table 1.

Table 1

Index value	X	Y	First monitoring 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	M 9

In Table 1, when the first parameter is (2,1), the corresponding first monitoring capability is M ₂ ; when the first parameter is (2, 2), the corresponding first monitoring capability is M ₃ , and no more Repeat. It should be noted that each first parameter may correspond to multiple first monitoring capabilities, for example, it may be as shown in Table 2. Table 1 only takes one first parameter corresponding to one first monitoring capability as an example for description, and does not represent any limitation.

Table 2

Index value	X	Y	First monitoring capability
1	1	1	M 1,1 ,M 1,2 ,M 1,3 ,...
2	2	1	M 2,1 ,M 2,2 ,M 2,3 ,...
3	2	2	M 3,1 ,M 3,2 ,M 3,3 ,...
4	4	1	M 4,1 ,M 4,2 ,M 4,3 ,...
5	4	2	M 5,1 ,M 5,2 ,M 5,3 ,...
6	4	3	M 6,1 ,M 6,2 ,M 6,3 ,...
7	7	1	M 7,1 ,M 7,2 ,M 7,3 ,...
8	7	2	M 8,1 ,M 8,2 ,M 8,3 ,...
9	7	3	M 9,1 ,M 9,2 ,M 9,3 ,...

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 capabilities are M _1,1 , M _1,2 , M _1,3, and so on.

The third message sent by the terminal-side device may directly carry at least one first parameter, or may carry the index value corresponding to each first parameter in the at least one first parameter, for example, carrying index values 1 and 2, or carrying (1 ,1) and (2,1). Other implementation methods are not limited.

The network side device may also determine the configuration of the search space where the downlink control channel is located according to the at least one first parameter, and send it to the terminal side device through a fourth message. The terminal-side device can thus monitor the downlink control channel according to the first monitoring parameter and the fourth message. For the specific content of the configuration of the search space where the downlink control channel is located, reference may be made to the description in the prior art, which is not limited here.

In the embodiment of the present 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. The first message indicates two first listening parameters, T1 and T2, respectively, and the position of T1 in the first message is before T2. The first time unit includes two sub-time units, which are sub-time unit 1 and sub-time unit 2 in chronological order. To this end, it can be agreed in advance that the first listening parameter in the first message in the first position corresponds to the sub-time unit in the first time unit. In this case, T1 may correspond to sub-time unit 1, and T2 may correspond to sub-time unit 1. Time unit 2 corresponds. Of course, this is just an example, and there may be other conventions, so I will not illustrate them one by one here.

In another implementation manner, the network side device may also send a fifth message to the terminal side device, the fifth message indicating the position 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, and the first message indicates two first monitoring parameters, which are T1 and T2 respectively. The first time unit includes three sub-time units, namely, sub-time unit 1, sub-time unit 2, and sub-time unit 3. To this end, the fifth message may include a bitmap. A bit in the bitmap corresponds to a sub-time unit. When a bit has a value of 1, it means that the sub-time unit corresponding to the bit corresponds to T1; when a bit is taken When the value is 0, it means that the sub-time unit corresponding to the bit corresponds to T2. For example, the bitmap is 101, which can indicate that T1 corresponds to sub-time unit 1 and sub-time unit 3, and T2 can correspond to sub-time unit 2. Of course, this is just an example, and there may be other conventions, so I will not illustrate them one by one here.

It should be noted that the terminal-side device may determine the positions of the n sub-time units included in the first time unit according to an instruction of the network-side device. For example, the network side device will configure the terminal side device with a bitmap b(l) for determining the span pattern, which is b(l)=1110111011000. The terminal-side device determines the position of the time-domain symbol that needs to monitor the PDCCH in one slot according to all the search space collection configurations configured by the network-side device. The terminal-side device determines that the duration of CORESET bound to all search space sets in a slot has 1 symbol, 2 symbols and 3 symbols in the time domain according to the configuration of all search space sets. Terminal-side equipment reporting capability (X, Y) = {(2, 2), (4, 3), (7, 3)}. The time domain length of a span or the number of consecutive OFDM symbols contained in a span is determined by the following mapping relationship max{max(CORESET time domain length), min(Y)}=3. The terminal-side device determines the start position of the first span according to the position of the first "1" of b(l), plus the span length of 3 to determine the time domain position of the first span. The terminal-side equipment then determines the start position of the second span according to the nearest “1” in b(l) that does not belong to the first span, plus the span length 3 to determine the time of the second span. Domain location. Finally, the terminal-side device determines the starting position of the third span according to the nearest “1” in b(l) that does not belong to the first span and the second span, plus the span length of 3 to determine The time domain position of the third span. The final pattern can be as shown in Figure 3. Or the first time unit may also be a combination of the above spans.

In the embodiment of this application, in a possible scenario, after the network-side device obtains the first monitoring parameter, it can directly use the maximum number of blind detections indicated by the first monitoring parameter as the terminal-side device's response to the downlink in the first sub-time unit. The maximum number of blind detections for the control channel blind detection, and/or the maximum number of CCEs indicated by the first monitoring parameter, is used as the maximum number of CCEs that the terminal side device performs channel estimation on the downlink control channel in the first sub-time unit Number.

Correspondingly, after the terminal-side device obtains the first monitoring parameter, it can directly use the maximum number of blind detection times indicated by the first monitoring parameter as the maximum number of blind detection times of the terminal-side device for blind detection of the downlink control channel in the first sub-time unit. And/or use the maximum number of CCEs indicated by the first monitoring parameter as the maximum number of CCEs for which the terminal side device performs channel estimation on the downlink control channel in the first sub-time unit.

In this scenario, the maximum number of blind detection times for the blind detection of the downlink control channel in the first time unit where the first sub-time unit is located may not be specified, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation on the downlink control channel.

In this scenario, the first sub-time unit may be a sub-time unit that prohibits or does not require execution of at least one of the first operation, the second operation, and the third operation;

Wherein, the first operation is used to determine the number of blind detections of the downlink control channel in the first sub-time unit according to a first preset condition; the second operation is used to determine the number of blind detections in the first sub-time unit 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 used to determine the blind detection of the downlink control channel in the first sub-time unit Whether the number of blind detection times is greater than the maximum number of blind detection times corresponding to the first time unit, and/or is used to determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than that corresponding to the first time unit The maximum number of CCEs.

The first preset condition includes the following content: the CCE sets corresponding to the two PDCCH candidates are the same, that is, the aggregation levels of the two PDCCH candidates are the same, and the starting CCE positions of the included CCEs are the same; the scrambling code sequences of the two PDCCH candidates are the same; The two PDCCH candidates come from the same control resource set (Control Resource Set, CORESET); the terminal side device detects the same length of DCI in the two PDCCH candidates.

Wherein, if the two PDCCH candidates meet the first preset condition, the two PDCCH candidates correspond to one number of blind detection times. If the two PDCCH candidates do not meet the first preset condition, the two PDCCH candidates correspond to two blind detection times. In the case that the two PDCCH candidates correspond to one number of blind detection times, as long as the terminal-side device blindly detects whether a resource associated with one of the PDCCH candidates has DCI, it is equivalent to blindly detecting the two PDCCH candidates. In the case where the two PDCCH candidates correspond to two blind detection times, and the two PDCCH candidates do not meet any one of the first preset conditions, the terminal-side device must blindly detect the associated two PDCCH candidates. Whether the resource has DCI.

The second preset condition includes: the two CCEs come from different CORESETs; the terminal-side equipment has different moments when blindly detecting the PDCCH among the two PDCCH candidates corresponding to the two CCEs.

For any two CCEs, if the any two CCEs are from different PDCCH candidates, if the any two CCEs meet at least one of the second preset conditions, then the any two CCEs Are two non-overlapping CCEs, otherwise, any two CCEs are one non-overlapping CCE, that is, when counting the number of non-overlapping CCEs, these two CCEs are only regarded as one non-overlapping CCE.

With reference to the foregoing description, for example, when the first sub-time unit is a sub-time unit that prohibits or does not require execution of the first operation, the maximum number of blind detections of the terminal-side device in the first sub-time unit may be the first sub-time unit. The product of the number of PDCCH candidates configured corresponding to one sub-time unit and the number of different DCI sizes blindly detected by the terminal-side device in the first sub-time unit.

For example: Taking the span as the sub-time unit as an example, within a span, two search space sets are configured. 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 search space set includes 2 PDCCH candidates and 1 DCI size to be monitored. Therefore, the number of blind detection times corresponding to the current span is 4*2+2*1=10 times. Since the network side device will ensure that the PDCCH configuration will not exceed the upper limit of the PDCCH monitoring capability of the span, and that the number of blind checks will not be recorded as 1, the terminal side device does not prohibit the first operation, that is, does not perform the judgment of 2 PDCCH candidates Whether the corresponding number of blind checks is one operation, and it is not necessary to determine whether it exceeds the upper limit of the PDCCH monitoring capability of the span.

In another possible scenario, after the network-side device and the terminal-side device obtain the first monitoring parameter, they may not use the maximum number of blind detections indicated by the first monitoring parameter as the terminal-side device’s response to the downlink in the first sub-time unit. The maximum number of blind detections for the control channel blind detection, and/or the maximum number of CCEs indicated by the first monitoring parameter, is used as the maximum number of CCEs that the terminal side device performs channel estimation on the downlink control channel in the first sub-time unit The number of blind detections finally determined is less than or equal to the maximum number of blind detections indicated by the first monitoring parameter, and the maximum number of CCEs determined is less than or equal to the maximum number of CCEs indicated by the first monitoring parameter. How to determine it will be described in detail below.

In this scenario, the second monitoring parameter of the terminal-side device in the first time unit where the first sub-time unit is located can be specified. At this time, if the number of sub-time units included in the first time unit is n, the sum of the maximum number of blind detection times for the downlink control channel blind detection in each sub-time unit of the n sub-time units , Less than or equal to the maximum number of blind detection times of the downlink control channel blind detection by the terminal-side device in the first time unit; the terminal-side device performs the downlink control channel blind detection in each of the n sub-time units The sum of the maximum number of non-overlapping CCEs used for channel estimation is less than or equal to the maximum number of non-overlapping CCEs used by the terminal side device for channel estimation of the downlink control channel in the first time unit. Wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device in the first time unit including the first sub-time unit, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in a time unit.

For example, the first time unit includes 3 sub-time units, namely sub-time unit 1 to sub-time unit 3, and the maximum number of blind detections indicated by the second listening parameter corresponding to the first time unit of the terminal-side device is 50; The maximum number of blind detections indicated by the first listening parameter of the terminal-side device in sub-time unit 1 is 20, and the maximum number of blind detection indicated by the first listening parameter of the terminal-side device in sub-time unit 2 is 20. The maximum number of blind detection times indicated by the first listening parameter corresponding to the device in the sub-time unit 3 is 30. At this time, 20+20+30=70, which is greater than 50. At this time, the terminal side device needs to adjust the first listening parameter 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 times corresponding to the first time unit The number of detections will be described in detail below.

Based on the above description, in this embodiment of the present application, the terminal-side device and the network-side device may determine the third monitoring parameter according to the first monitoring parameter and the second monitoring parameter; the terminal-side device may pair according to the third monitoring parameter The downlink control channel is monitored; accordingly, the network side device configures the maximum number of blind detection times for the downlink control channel blind detection of the downlink control channel in the first sub-time unit according to the third listening parameter, and/or, in the first sub-time unit, The maximum number of non-overlapping CCEs that perform channel estimation on the downlink control channel in a sub-time unit.

Wherein, the third monitoring parameter includes the maximum number of times of blind detection of the downlink control channel by the terminal-side device in the first sub-time unit, and/or the channel estimation used for the downlink control channel The maximum number of non-overlapping CCEs.

The following describes how to determine the third monitoring parameter 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 as an example. Wherein, n is an integer greater than zero.

The first possible implementation:

The third monitoring parameter corresponding to any one of the n sub-time units satisfies the following formula (1):

Formula 1):

Wherein, H represents the 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, and min() represents the minimum operation.

Represents the round-down operation.

For example: n=5, P=112, T=28, the third monitoring parameter of each sub-time unit is

At this time, 22*5=110<112.

From formula (1), it can be known that the sum of the finally determined third monitoring parameters corresponding to n sub-time units must be less than or equal to the second monitoring parameters.

The above formula (1) may also have many variations. For example, the third listening parameter corresponding to n-1 sub-time units in the n sub-time units satisfies the following formula (2), in the n sub-time units The third monitoring parameters corresponding to the sub-time units other than the n-1 sub-time units satisfy the following formula (3):

Formula (2):

Formula (3):

Wherein, H ₁ represents the third monitoring parameter corresponding to any one of the n-1 sub-time units in the n sub-time units, T represents the first monitoring parameter, and P represents the second monitoring parameter, min() represents the minimum value operation,

Represents a round-up operation; H ₂ represents a third monitoring parameter corresponding to a sub-time unit other than the n-1 sub-time units among the n sub-time units.

For example: n=5, P=112, T=28, where the third listening parameters corresponding to 4 of the 5 sub-time units are all

The third monitoring parameter corresponding to the other one of the five sub-time units is

At this time, 23*4+20=112.

The second possible implementation:

The n sub-time units include K types of sub-time units, and each of the K types of sub-time units includes at least one sub-time unit; K is an integer greater than 0; the K types of The sub-time units are from the first type of sub-time unit to the K-th type of sub-time unit in order from high to low in order of priority.

Among the K types of sub-time units, in descending order of priority, the first listening parameter corresponding to each sub-time unit in the j-th type of sub-time unit is T _j ; j=1, 2, ··,K.

The third listening parameter corresponding to each of the sub-time units of the highest priority type among the K types of sub-time units satisfies the following formula (4);

For the K types of sub-time units, the priority from high to low is from the second type of sub-time unit to the K-th type of sub-time unit. The third listening parameter corresponding to each sub-time unit satisfies The following formula (5);

Formula (4): H _j =T _j

Formula (5):

Where, H _j represents the third monitoring parameter corresponding to each sub-time unit in the j-th type of sub-time unit in the order of priority from high to low among the K types of sub-time units, j=1, 2, ··, K; P represents the second monitoring parameter, and P _j-1 represents all types of sub-time units with priority higher than the j-th type of sub-time units among the K types of sub-time units The sum of the third monitoring parameters corresponding to each sub-time unit, n _j represents the number of sub-time units included in the j-th type of sub-time unit, min() represents the minimum operation,

Represents the round-down operation.

The above formula (5) may also have many variations. For example, the third listening parameter corresponding to n-1 sub-time units in the n sub-time units may also satisfy the following formula (6), the n sub-time units The third monitoring parameter corresponding to the sub-time units in the unit other than the n-1 sub-time units may also satisfy the following formula (7):

For the K types of sub-time units, the priority from high to low is from the second type of sub-time unit to the third monitor corresponding to each sub-time unit of the K-1 type. The parameters can also satisfy the following formula (6);

For the K types of sub-time units, the third listening parameter corresponding to n _K -1 sub-time units in the _K -th type of sub-time unit with the lowest priority satisfies the following formula (6), the priority The third listening parameter corresponding to the sub-time units other than the n _K -1 sub-time units among the lowest K-th type sub-time units can also satisfy the following formula (7), where n _K is the lowest priority The number of sub-time units included in the K-th type of sub-time unit:

Formula (6):

Formula (7): H=PP _K-1 -(n _K -1)*H _K

Where, H _j represents the third monitoring parameter corresponding to each sub-time unit in the j-th type of sub-time unit in the order of priority from high to low among the K types of sub-time units, j=1, 2, ··, K; P represents the first capability value, and P _j-1 represents all types of sub-time units of the K types of sub-time units that have a higher priority than the j-th type of sub-time unit The sum of the third monitoring parameters corresponding to each sub-time unit, P _K-1 represents the priority of the K types of sub-time units from high to low, from the first type of sub-time unit to the K-1th The sum of the third monitoring parameters corresponding to each sub-time unit in the type of sub-time unit, n _j represents the number of sub-time units included in the j-th type of sub-time unit, min() represents the minimum operation,

Represents round-up operation.

For example, taking two types as examples for description, the first type of sub-time unit is a sub-time unit that includes a common search space set (CSS set), and the second type of sub-time unit is a sub-time unit that does not include The child time unit of the CSS set. The sub-time unit of the first type has a higher priority than the sub-time unit of the second type. The first monitoring parameter corresponding to each sub-time unit in the first type of sub-time unit is T ₁ , and the first monitoring parameter corresponding to each sub-time unit in the second type of sub-time unit is T ₂ . The number of sub-time units of the first type included in the first time unit is n ₁ , and the number of sub-time units of the second type included in the first time unit is n ₂ , n ₁ +n ₂ =n.

At this time, in the first time unit, when a sub-time unit is a sub-time unit of the first type, the third monitoring parameter corresponding to the sub-time unit is the first monitoring parameter T ₁ corresponding to the sub-time unit;

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

Or for

Or it can be

Among them, P is the second monitoring parameter corresponding to the first time unit.

The third possible implementation:

In the case where there is a second monitoring parameter corresponding to the first time unit, the first monitoring parameter corresponding to each sub-time unit in the n sub-time units may also be determined as the corresponding first monitoring parameter in each of the n sub-time units. The third monitoring parameter.

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 mode, the n first monitoring parameters corresponding to the n sub-time units are predetermined by the network side device. 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 listening parameter, so the third listening parameter may no longer be determined.

In this scenario, the first sub-time unit may be a sub-time unit that prohibits performing at least one of the first operation, the second operation, and the third operation.

As shown in FIG. 4, a schematic structural diagram of a channel monitoring device provided in an embodiment of this application. The device can be used to perform the actions of the terminal-side equipment in the foregoing method embodiments. The device 400 includes a processing unit 401 and a transceiver unit 402.

When the communication device 400 executes the actions of the terminal-side equipment in the flow shown in FIG. 2:

The transceiver unit 402 is configured to obtain a first monitoring parameter; the first monitoring parameter includes the maximum number of blind detections for the downlink control channel blind detection in the first sub-time unit, and/or, in the first sub-time unit The maximum number of non-overlapping control channel elements CCEs used for channel estimation of the downlink control channel in;

The processing unit 401 is 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;

Alternatively, the first monitoring parameter is determined according to a first message from the network side device, and the first message indicates the first monitoring parameter for monitoring the downlink control channel.

In a possible implementation manner, when the first monitoring parameter is determined according to a first message from a network side device, the first monitoring parameter is determined by the network side device according to a preset maximum monitoring capability;

The preset maximum monitoring capability includes the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit, used to monitor the The preset maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation.

In a possible implementation manner, the transceiver unit 402 is further configured to:

Send a second message to the network-side device, the second message indicating at least one first monitoring capability supported by the downlink control channel, for any first monitoring capability among the at least one first monitoring capability, the second message A monitoring capability includes the 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, used in the first sub-time unit for The maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation;

The first monitoring parameter is one of the at least one first monitoring capability.

In a possible implementation manner, the at least one first monitoring capability is selected by the terminal-side device from a plurality of predefined monitoring capabilities.

In a possible implementation manner, the transceiver unit 402 is further configured to:

Sending a third message to the network-side device, the third message indicating at least one first parameter corresponding to the at least one first monitoring capability, for any first parameter in the at least one first parameter, The first parameter includes the minimum time domain interval of every two sub time units in the time unit in which the first sub time unit is located and the 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, the fourth message indicating the configuration of the search space where the downlink control channel is located;

The processing unit 401 is specifically configured to:

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;

Wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device in the first time unit including the first sub-time unit, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in a time unit; the third monitoring parameter includes the blind detection of the downlink control by the terminal-side device in the first sub-time unit The maximum number of channel detection times, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel;

Monitoring the downlink control channel according to the third monitoring parameter.

In a possible implementation manner, the transceiver unit 402 is further configured to:

Receive a fifth message from the network side device, the fifth message indicating the position of the first sub-time unit in the first time unit where the first sub-time unit is located.

Fig. 5 is a schematic structural diagram of a device provided by an embodiment of the present application. The device shown in FIG. 5 may be a hardware circuit implementation of the device shown in FIG. 4. The communication device can be applied to the flowchart shown in FIG. 2 to perform the functions of the terminal-side device in the foregoing method embodiment. For ease of description, FIG. 5 only shows the main components of the communication device. Optionally, the communication device may be a terminal-side device, or a device in a 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 also include other circuit structures and / Or discrete devices. Optionally, taking the communication device as a terminal-side device as an example, as shown in FIG. 5, the device 500 includes a processor 501, a memory 502, a transceiver 503, an antenna 504, and an input and output device 505. The processor 501 is mainly used to process communication protocols and communication data, and to control the entire wireless communication device, execute software programs, and process data of the software programs, for example, to support the wireless communication device to execute the methods described in the above method embodiments. Action etc. The memory 502 is mainly used to store software programs and data. The transceiver 503 is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. The antenna 504 is mainly used to transmit and receive 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 to receive data input by the user and output data to the user.

For the functions of the device 500 shown in FIG. 5, reference may be made to the description in the process shown in FIG. 2 for details, which will not be repeated here.

As shown in FIG. 6, a schematic structural diagram of a channel monitoring device provided in an embodiment of this application. The device can be used to perform actions of the network side equipment in the foregoing method embodiments. The device 600 includes a processing unit 601 and a transceiver unit 602.

The transceiver unit 602 is configured to obtain a first monitoring parameter; the first monitoring parameter includes the maximum number of blind detections for the downlink control channel blind detection in the first sub-time unit, and/or, in the first sub-time unit The maximum number of non-overlapping control channel elements CCEs used for channel estimation of the downlink control channel in;

The processing unit 601 is configured to configure, according to the first listening parameter, the maximum number of blind detection times for the blind detection of the downlink control channel by the terminal-side device in the first sub-time unit, and/or, in the first sub-time unit The maximum number of non-overlapping CCEs for which the downlink control channel performs channel estimation.

In a possible implementation manner, the first monitoring 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 the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit, used to monitor the The preset maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation.

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;

Wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device in the first time unit including the first sub-time unit, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in a time unit; the third monitoring parameter includes the blind detection of the downlink control by the terminal-side device in the first sub-time unit The maximum number of channel detections, and/or the 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:

Send a fifth message to the terminal side device, the fifth message indicating the position of the first sub-time unit in the first time unit where 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, the second message indicating at least one first monitoring capability supported by the downlink control channel, and Any one of the at least one first monitoring capability, where the first monitoring capability includes the maximum blindness supported by the terminal-side device for blind detection of the downlink control channel in the first sub-time unit The number of detections, and/or the maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel in the first sub-time unit; the network side device is based on the at least one first The monitoring capability determines the first monitoring parameter.

In a possible implementation manner, it further includes: the at least one first monitoring capability is selected by the terminal side device from a plurality of predefined monitoring capabilities.

In a possible implementation manner, the device further includes:

The network-side device receives a third message from the terminal-side device, the third message indicating at least one first parameter corresponding to the at least one first monitoring capability, for any of the at least one first parameter A first parameter, the first parameter including the minimum time domain interval of every two sub time units in the time unit where the first sub time unit is located and the maximum time domain length included in each sub time unit;

The network side device sends a fourth message to the terminal side device according to the at least one first parameter, where 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 performing at least one of the first operation, the second operation, and the third operation;

The first operation is used to determine the number of blind detections of the downlink control channel in the first sub-time unit; the second operation is used to determine the number of blind detections for the downlink control channel in the first sub-time unit The number of non-overlapping CCEs used for channel estimation; the third operation is used to determine whether the number of blind detections of the downlink control channel in the first sub-time unit is greater than that corresponding to the first time unit The maximum number of blind detections at and/or is used to determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than the maximum number of CCEs corresponding to the first time unit.

Fig. 7 is a schematic structural diagram of a communication device provided by 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 can be applied to the flowchart shown in FIG. 2 to perform the functions of the network side device in the foregoing method embodiment. For ease of description, FIG. 7 only shows the main components of the communication device. Optionally, the communication device may be a network-side device, or 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 also include other circuit structures and / Or discrete devices. Optionally, taking the communication device as a network-side device as an example, as shown in FIG. 7, the communication device 700 includes a processor 701, a memory 702, a transceiver 703, an antenna 704, and the like.

For the functions of the communication device 700 shown in FIG. 7, reference may be made to the description in the process shown in FIG. 2 for details, which will not be repeated here.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims (30)

1. A channel monitoring method, characterized in that it comprises:

   The terminal-side device obtains the first monitoring parameter; the first monitoring parameter includes the maximum number of blind detection times for the blind detection of the downlink control channel in the first sub-time unit, and/or is used in the first sub-time unit The maximum number of non-overlapping control channel elements CCE for performing channel estimation on the downlink control channel;

   The terminal-side device monitors the downlink control channel according to the first listening parameter.
2. The method of claim 1, wherein the first monitoring parameter is a predefined parameter;

   Alternatively, the first monitoring parameter is determined by the terminal-side device according to a first message from the network-side device, and 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 terminal side device according to the first message from the network side device, the first monitoring parameter is the network side The equipment is determined according to the preset maximum monitoring capability;

   The preset maximum monitoring capability includes the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit, used to monitor the The preset maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation.
4. The method of claim 1, further comprising:

   The terminal-side device sends a second message to the network-side device, the second message indicating at least one first monitoring capability supported by the downlink control channel, for any one of the at least one first monitoring capability Capability, the first monitoring capability includes the 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, in the first sub-time The maximum number of non-overlapping CCEs supported in the unit for channel estimation of the downlink control channel;

   The first monitoring parameter is one of the at least one first monitoring capability.
5. The method of claim 4, further comprising:

   The at least one first monitoring capability is selected by the terminal-side device from a plurality of predefined monitoring capabilities.
6. The method according to claim 4 or 5, wherein the terminal side device sends a third message to the network side device, the third message indicating at least one corresponding to the at least one first monitoring capability The first parameter, for any one of the at least one first parameter, the first parameter includes the minimum time domain interval of every two sub-time units in the time unit in which the first sub-time unit is located and each The maximum time domain length contained in each sub-time unit;

   Receiving, by the terminal-side device, a fourth message sent by the network-side device according to the at least one first parameter, the fourth message indicating the configuration of the search space where the downlink control channel is located;

   The monitoring of the downlink control channel by the terminal-side device according to the first monitoring parameter includes:

   The terminal side device monitors the downlink control channel according to the first monitoring parameter and the fourth message.
7. The method according to any one of claims 1 to 6, wherein the first sub-time unit is a sub-time unit that prohibits performing at least one of the first operation, the second operation, and the third operation;

   The first operation is used to determine the number of blind detections of the downlink control channel in the first sub-time unit; the second operation is used to determine the number of blind detections for the downlink control channel in the first sub-time unit The number of non-overlapping CCEs used for channel estimation; the third operation is used to determine whether the number of blind detections of the downlink control channel in the first sub-time unit is greater than that corresponding to the first time unit The maximum number of blind detections at and/or is used to determine whether the number of non-overlapping CCEs in the first sub-time unit is greater than the maximum number of CCEs corresponding to the first time unit.
8. The method according to any one of claims 1 to 7, wherein the terminal-side device monitoring the downlink control channel according to the first monitoring parameter comprises:

   Determining, by the terminal-side device, a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;

   Wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device in the first time unit including the first sub-time unit, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in a time unit; the third monitoring parameter includes the blind detection of the downlink control by the terminal-side device in the first sub-time unit The maximum number of channel detection times, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel;

   The terminal-side device monitors the downlink control channel according to the third monitoring parameter.
9. 9. The method according to any one of claims 1 to 8, wherein the method further comprises:

   The terminal side device receives a fifth message from the network side device, the fifth message indicating the position of the first sub-time unit in the first time unit where the first sub-time unit is located.
10. A channel monitoring method, characterized in that it comprises:

    The network-side device acquires the first monitoring parameter; the first monitoring parameter includes the maximum number of blind detection times for the blind detection of the downlink control channel in the first sub-time unit, and/or, used in the first sub-time unit The maximum number of non-overlapping control channel elements CCE for performing channel estimation on the downlink control channel;

    The network side device configures the maximum number of blind detection times for the downlink control channel blind detection of the terminal side device in the first sub-time unit according to the first listening parameter, and/or, in the first sub-time unit The maximum number of non-overlapping CCEs for which the downlink control channel performs channel estimation.
11. The method of claim 10, wherein the first monitoring parameter is a predefined parameter.
12. The method according to claim 10, wherein the first monitoring parameter is determined by the network side device according to a preset maximum monitoring capability;

    The preset maximum monitoring capability includes the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit, used to monitor the The preset maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation.
13. The method of claim 10, further comprising:

    The network side device receives a second message from the terminal side device, the second message indicating at least one first monitoring capability supported by the downlink control channel, for any one of the at least one first monitoring capability A first monitoring capability, where the first monitoring capability includes the 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, in the first sub-time unit The maximum number of non-overlapping CCEs supported by channel estimation for the downlink control channel in a sub-time unit;

    The network side device 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 monitoring capability is selected by the terminal-side device from a plurality of predefined monitoring 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, the third message indicating at least one first parameter corresponding to the at least one first monitoring capability, for any of the at least one first parameter A first parameter, where the first parameter includes the minimum time domain interval of every two sub-time units in the time unit in which the first sub-time unit is located and the maximum time domain length included in each sub-time unit;

    The network side device sends a fourth message to the terminal side device according to the at least one first parameter, where 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 network side device configures the maximum blind detection of the blind detection of the downlink control channel in the first sub-time unit according to the first listening parameter. The number of times, and/or, the maximum number of non-overlapping CCEs that perform channel estimation on the downlink control channel in the first sub-time unit includes:

    Determining, by the network device, a third monitoring parameter according to the first monitoring parameter and the second monitoring parameter;

    Wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device in the first time unit including the first sub-time unit, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in a time unit; the third monitoring parameter includes the blind detection of the downlink control by the terminal-side device in the first sub-time unit The maximum number of channel detections, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel.
17. The method according to any one of claims 10 to 16, wherein the method further comprises:

    The network-side device sends a fifth message to the terminal-side device, the fifth message indicating the position of the first sub-time unit in the first time unit where the first sub-time unit is located.
18. A channel monitoring device, characterized by comprising:

    The transceiver unit is configured to obtain a first monitoring parameter; the first monitoring parameter includes the maximum number of blind detection times for the blind detection of the downlink control channel in the first sub-time unit, and/or, in the first sub-time unit The maximum number of non-overlapping control channel elements CCEs used for channel estimation of the downlink control channel;

    The processing unit is configured to monitor the downlink control channel according to the first monitoring parameter.
19. The device of claim 18, wherein the first monitoring parameter is a predefined parameter;

    Alternatively, the first monitoring parameter is determined according to a first message from the network side device, and the first message indicates the first monitoring parameter for monitoring the downlink control channel.
20. The apparatus according to claim 19, wherein the first monitoring parameter is determined according to the first message from the network side device, the first monitoring parameter is the network side device according to a preset maximum The monitoring capability is determined;

    The preset maximum monitoring capability includes the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit, used to monitor the The preset maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation.
21. The device of claim 18, wherein the transceiver unit is further configured to:

    Send a second message to the network-side device, the second message indicating at least one first monitoring capability supported by the downlink control channel, for any first monitoring capability among the at least one first monitoring capability, the second message A monitoring capability includes the 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, used in the first sub-time unit for The maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation;

    The first monitoring parameter is one of the at least one first monitoring capability.
22. The apparatus according to claim 21, wherein the at least one first monitoring capability is selected by the terminal-side device from a plurality of predefined monitoring capabilities.
23. The device according to claim 21 or 22, wherein the transceiver unit is further configured to:

    Sending a third message to the network-side device, the third message indicating at least one first parameter corresponding to the at least one first monitoring capability, for any first parameter in the at least one first parameter, The first parameter includes the minimum time domain interval of every two sub time units in the time unit in which the first sub time unit is located and the 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, the fourth message indicating the configuration of the search space where the downlink control channel is located;

    The processing unit is specifically used for:

    Monitoring the downlink control channel according to the first monitoring parameter and the fourth message.
24. The device 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;

    Wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device in the first time unit including the first sub-time unit, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in a time unit; the third monitoring parameter includes the blind detection of the downlink control by the terminal-side device in the first sub-time unit The maximum number of channel detection times, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel;

    Monitoring the downlink control channel according to the third monitoring parameter.
25. The device according to any one of claims 18 to 24, wherein the transceiver unit is further configured to:

    Receive a fifth message from the network side device, the fifth message indicating the position of the first sub-time unit in the first time unit where the first sub-time unit is located.
26. A channel monitoring device, characterized by comprising:

    The transceiver unit is configured to obtain a first monitoring parameter; the first monitoring parameter includes the maximum number of blind detection times for the blind detection of the downlink control channel in the first sub-time unit, and/or, in the first sub-time unit The maximum number of non-overlapping control channel elements CCEs used for channel estimation of the downlink control channel;

    The processing unit is configured to configure, according to the first monitoring parameter, the maximum number of blind detection times of the blind detection of the downlink control channel in the first sub-time unit by the terminal-side device, and/or, in the first sub-time unit, all The maximum number of non-overlapping CCEs for which the downlink control channel performs channel estimation.
27. The device of claim 26, wherein the first listening parameter is a predefined parameter.
28. The device of claim 26, wherein the first monitoring parameter is determined according to a preset maximum monitoring capability;

    The preset maximum monitoring capability includes the preset maximum number of blind detections supported by the blind detection of the downlink control channel in a sub-time unit, and/or, in the first sub-time unit, used to monitor the The preset maximum number of non-overlapping CCEs supported by the downlink control channel for channel estimation.
29. The device 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;

    Wherein, the second monitoring parameter is the maximum number of blind detection times of the downlink control channel blind detection of the terminal-side device in the first time unit including the first sub-time unit, and/or, in the first time unit The maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel in a time unit; the third monitoring parameter includes the blind detection of the downlink control in the first sub-time unit by the terminal side device The maximum number of channel detections, and/or the maximum number of non-overlapping CCEs used for channel estimation of the downlink control channel.
30. The device according to any one of claims 26 to 29, wherein the transceiver unit is further configured to:

    Send a fifth message to the terminal side device, the fifth message indicating the position of the first sub-time unit in the first time unit where the first sub-time unit is located.

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