WO2021003703A1

WO2021003703A1 - Method and apparatus for updating transmission parameter of physical downlink control channel, and storage medium

Info

Publication number: WO2021003703A1
Application number: PCT/CN2019/095452
Authority: WO
Inventors: 牟勤
Original assignee: 北京小米移动软件有限公司
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2021-01-14
Also published as: CN110521271B; CN110521271A

Abstract

The present disclosure relates to the technical field of wireless communication, and provided is a method for updating a transmission parameter of a physical downlink control channel (PDCCH). The method comprises: when uplink data is sent by means of a grant-free scheduling mechanism, using a first transmission parameter to receive update indication information that is sent by a base station by means of a PDCCH; and according to the update indication information, updating into a second transmission parameter the first transmission parameter that is used when monitoring the PDCCH sent by the base station. The present solution achieves a solution in which the transmission parameter of a PDCCH is updated without relying on an RRC connection, thus expanding update scenarios for the transmission parameter of the PDCCH.

Description

Method, device and storage medium for updating transmission parameters of physical downlink control channel

Technical field

The present disclosure relates to the field of wireless communication technology, and in particular to a method, device and storage medium for updating transmission parameters of a physical downlink control channel.

Background technique

In the Internet of Things scenario, since the amount of data transmitted in each uplink is relatively small, the Internet of Things devices usually have a requirement for authorization-free uplink scheduling.

In related technologies, under the authorization-free uplink scheduling, the base station pre-configures some scheduling information used for uplink transmission for the terminal, such as resource allocation, transmission mode, and modulation and demodulation mode. When the terminal wakes up, it does not need to perform random access and receive uplink scheduling permission, that is, it can automatically perform uplink transmission on pre-configured resources, thereby reducing signaling overhead and avoiding power waste.

Summary of the invention

The present disclosure provides a method, device and storage medium for updating transmission parameters of a physical downlink control channel. The technical solution is as follows:

According to the first aspect of the embodiments of the present disclosure, there is provided a method for updating transmission parameters of a physical downlink control channel. The method is executed by a terminal, and the method includes:

In the process of sending uplink data through the unlicensed scheduling mechanism, receiving the update indication information sent by the base station through the physical downlink control channel (Physical Downlink Control Channel, PDCCH) through the first transmission parameter;

According to the update instruction information, the first transmission parameter used when monitoring the PDCCH sent by the base station is updated to the second transmission parameter.

In a possible implementation manner, the receiving, through the first transmission parameter, the update indication information sent by the base station through the physical downlink control channel PDCCH includes:

Monitoring the downlink control information (Downlink Control Information, DCI) sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter and used to carry confirmation feedback; the confirmation feedback is used to indicate successful reception of the uplink data ；

Extracting the update indication information from the DCI.

In a possible implementation manner, the first transmission parameter includes at least one of initial monitoring time information, monitoring duration information, and the number of repeated transmissions of the PDCCH sent by the base station;

Wherein, the initial monitoring time information is used to indicate the time to start monitoring the PDCCH; the monitoring duration information is used to indicate the duration of continuously monitoring the PDCCH.

In a possible implementation manner, the update indication information includes the second transmission parameter;

or,

The update indication information includes a parameter offset between the first transmission parameter and the second transmission parameter.

In a possible implementation manner, the second transmission parameter is a parameter that instructs the terminal to end monitoring the PDCCH sent by the base station;

or,

The second transmission parameter is a parameter instructing the terminal to monitor the PDCCH sent by the base station at least one subsequent time.

In a possible implementation manner, the update indication information is used to indicate updated sending parameters; the sending parameters are parameters used by the terminal to send uplink data;

The updating, according to the update instruction information, the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter includes:

Obtaining the adjustment strategy of the first transmission parameter according to the sending parameter before the update and the sending parameter after the update;

Adjust the first transmission parameter to the second transmission parameter according to the adjustment strategy of the first transmission parameter.

In a possible implementation manner, the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the sending parameter includes the number of repeated transmissions of the upload data sent by the terminal;

The obtaining the adjustment strategy of the first transmission parameter according to the sending parameter before the update and the sending parameter after the update includes:

Obtaining the adjusted ratio of the number of repeated transmissions of the PDCCH sent by the base station according to the ratio of the number of repeated transmissions of the upload data sent by the terminal before and after adjustment;

The adjusting the first transmission parameter to the second transmission parameter according to the adjustment strategy of the first transmission parameter includes:

According to the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station, the number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.

In a possible implementation manner, the adjusting the number of repeated transmissions included in the first transmission parameter according to the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station to obtain the second transmission parameter includes :

Multiplying the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station by the number of repeated transmissions included in the first transmission parameter to obtain a reference value of the number of repeated transmissions;

According to the reference value of the number of repeated transmissions and the number of PDCCH repeated transmissions supported by the base station, the number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for updating transmission parameters of a physical downlink control channel. The method is executed by a base station, and the method includes:

In the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, the physical downlink control channel PDCCH is used to send update indication information to the terminal, and the update indication information is used to indicate that the terminal will be used to monitor the base station sending The first transmission parameter used in the PDCCH is updated to the second transmission parameter.

In a possible implementation manner, the sending update indication information to the terminal through a physical downlink control channel PDCCH includes:

Downlink control information DCI sent through the PDCCH and used to carry confirmation feedback, where the confirmation feedback is used to indicate successful reception of the uplink data, and the DCI includes the update indication information.

or,

The second transmission parameter is a parameter that instructs the terminal to monitor the PDCCH sent by the base station at least one subsequent time.

In a possible implementation manner, the update indication information is used to indicate updated sending parameters; the sending parameters are parameters used by the terminal to send uplink data.

In a possible implementation manner, the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the transmission parameter includes the number of repeated transmissions of the upload data sent by the terminal.

According to a third aspect of the embodiments of the present disclosure, there is provided a device for updating transmission parameters of a physical downlink control channel. The device is used in a terminal, and the device includes:

The update indication information receiving module is configured to receive, through the first transmission parameter, the update indication information sent by the base station through the physical downlink control channel PDCCH during the process of sending uplink data through the authorization-free scheduling mechanism;

The transmission parameter update module is configured to update the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter according to the update indication information.

In a possible implementation manner, the update instruction information receiving module is configured to:

Monitoring the downlink control information DCI sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter and used to carry confirmation feedback; the confirmation feedback is used to indicate successful reception of the uplink data;

Extracting the update indication information from the DCI.

or,

In a possible implementation manner, the update indication information is used to indicate updated transmission parameters; the transmission parameters are parameters used by the terminal to send uplink data; and the transmission parameter update module is configured to:

When the adjustment strategy of the first transmission parameter is obtained according to the transmission parameter before the update and the transmission parameter after the update, the transmission parameter update module is configured to send the upload data according to the number of repeated transmissions of the terminal The ratio before and after adjustment, obtaining the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station;

When the first transmission parameter is adjusted to the second transmission parameter according to the adjustment strategy of the first transmission parameter, the transmission parameter update module is configured to adjust the number of repeated transmissions of the PDCCH sent by the base station Ratio, the number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.

In a possible implementation manner, when the number of repeated transmissions included in the first transmission parameter is adjusted according to the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station to obtain the second transmission parameter, The transmission parameter update module is used for,

According to a fourth aspect of the embodiments of the present disclosure, there is provided a device for updating transmission parameters of a physical downlink control channel. The device is used in a base station, and the device includes:

The update indication information sending module is used to send update indication information to the terminal through the physical downlink control channel PDCCH in the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, and the update indication information is used to instruct the terminal The first transmission parameter used when monitoring the PDCCH sent by the base station is updated to the second transmission parameter.

In a possible implementation manner, the update indication information sending module is configured to send downlink control information DCI for carrying confirmation feedback sent through the PDCCH, and the confirmation feedback is used to indicate successful reception of the uplink data, and The DCI includes the update instruction information.

or,

According to a fifth aspect of the embodiments of the present disclosure, there is provided a system for updating transmission parameters of a physical downlink control channel, the system including: a terminal and a base station;

The terminal includes the transmission parameter update device of the physical downlink control channel as described in the third aspect;

The base station includes the transmission parameter update device of the physical downlink control channel as described in the fourth aspect.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a device for updating transmission parameters of a physical downlink control channel. The device is used in a terminal, and the device includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

In the process of sending uplink data through the authorization-free scheduling mechanism, receiving the update indication information sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter;

According to a seventh aspect of the embodiments of the present disclosure, there is provided an apparatus for updating transmission parameters of a physical downlink control channel. The apparatus is used in a base station, and the apparatus includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

According to an eighth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, the computer-readable storage medium contains executable instructions, and a processor in a terminal invokes the executable instructions to implement the above-mentioned first aspect Or the method for updating transmission parameters of the physical downlink control channel described in any optional implementation of the first aspect.

According to a ninth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, the computer-readable storage medium contains executable instructions, and a processor in a base station invokes the executable instructions to implement the second aspect described above Or the method for updating transmission parameters of the physical downlink control channel described in any optional implementation of the second aspect.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the process of the uplink data sent by the terminal through the authorization-free scheduling mechanism, the base station can transmit update indication information to the terminal through the PDCCH to instruct the terminal to update the transmission parameters of the monitored PDCCH, thereby achieving independent radio resource control (Radio Resource Control). Control, RRC) connection to update the transmission parameters of the PDCCH solution, which extends the update scenario of the transmission parameters of the PDCCH.

It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present disclosure.

Description of the drawings

The drawings herein are incorporated into the specification and constitute a part of the specification, show embodiments consistent with the disclosure, and are used together with the specification to explain the principle of the disclosure.

Fig. 1 is a schematic structural diagram of a wireless communication system according to some exemplary embodiments;

Fig. 2 is a schematic diagram showing a process of updating PDCCH transmission parameters according to an exemplary embodiment;

Fig. 3 is a flow chart showing a method for updating transmission parameters of PDCCH according to an exemplary embodiment;

Fig. 4 is a flow chart showing a method for updating transmission parameters of PDCCH according to an exemplary embodiment;

Fig. 5 is a flow chart showing a method for updating transmission parameters of PDCCH according to an exemplary embodiment;

Fig. 6 is a flow chart showing a method for updating transmission parameters of PDCCH according to an exemplary embodiment;

Fig. 7 is a block diagram showing a device for updating transmission parameters of PDCCH according to an exemplary embodiment;

Fig. 8 is a block diagram showing a device for updating transmission parameters of PDCCH according to an exemplary embodiment;

Fig. 9 is a schematic structural diagram of a device for updating transmission parameters of PDCCH according to an exemplary embodiment.

Detailed ways

Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

It should be understood that the "several" mentioned in this text refers to one or more, and the "plurality" refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are in an "or" relationship.

In recent years, with the rapid development of Internet of Things technology, Internet of Things devices have brought a lot of convenience to people's lives and work. Among them, machine-type communication technology (MTC) and narrow-band Internet of Things (NB-IoT) are typical representatives of cellular IoT technology. At present, such technologies have been widely used in smart cities (such as meter reading), smart agriculture, (such as the collection of information such as temperature and humidity), and smart transportation (such as shared bicycles) and many other fields.

Since most of the terminals in MTC and NB-IoT are deployed in areas where wireless signal propagation is limited, such as basements, and the hardware capabilities of terminal devices are limited, their coverage capabilities are not as good as traditional Long Term Evolution (LTE) networks. Therefore, repeated transmission is usually used in MTC and NB-IoT networks to accumulate power to achieve the effect of coverage enhancement. In simple terms, repeated transmission means that the same transmission content is transmitted in multiple time units. This time unit can be one subframe or multiple subframes.

In addition, since most of the terminals in MTC and NB-IoT are deployed in scenarios that are not easy to charge or replace batteries, such as in the field or in the basement, the power saving for MTC and NB-IoT terminals is a major feature of MTC and NB-IoT. .

In the IoT scenario, the amount of data transmitted each time is relatively small. If you follow the traditional LTE data transmission process, that is, perform random access with the base station, receive uplink scheduling permission, and data upload process every time you transmit data, it will bring huge signaling overhead, and the resources occupied by signaling transmission will be Far greater than the resources occupied by data transmission. Therefore, for this scenario, related technologies propose to introduce authorization-free uplink scheduling in MTC and NB-IoT scenarios. That is, the base station pre-configures some scheduling information used by the terminal for uplink transmission, such as resource allocation, modulation and coding mode, multi-antenna transmission mode, and transmission power. That is, after the terminal wakes up, it does not need to perform random access and receive the uplink scheduling permission, that is, it can automatically perform uplink transmission on the pre-configured resources in a preset manner, thereby achieving the purpose of reducing signaling overhead and avoiding power waste.

As mentioned above, in the unlicensed uplink scheduling in related technologies, the base station will pre-configure transmission resources and transmission methods for the terminal in advance (for example, the transmission methods include modulation and coding methods, multi-antenna transmission modes, and transmission power). When there is data to be sent, it is sent directly on the pre-configured resource according to the preset transmission mode.

In the authorization-free uplink scheduling in related technologies, considering that most IoT users’ services are reported periodically, such as electricity meters, water meters, etc., report business data at regular intervals, so the configuration in the authorization-free uplink scheduling Resources also appear periodically. For example, the base station will configure the time and frequency position of the reserved resources, the size of the resource, the period of occurrence, and the format of user data transmission, such as the modulation and coding method. When the user needs coverage enhancement, the base station will also configure repeated transmission. The number of times.

In a solution provided by the present disclosure, the base station can feedback uplink data sent by the terminal. The feedback of uplink data can be carried by the PDCCH sent by the base station. When configuring the transmission parameters in the authorization-free uplink scheduling for the terminal, the base station will also configure the parameters for the start time of the terminal to monitor the PDCCH, the maximum number of repetitions of the PDCCH, and the duration of the PDCCH monitoring.

However, in the IoT scenario, the channel condition of the terminal changes, and the channel information reported by the terminal on which the base station is based may also be inaccurate. Therefore, in some cases, it is necessary to reconfigure the transmission parameters of the PDCCH. In the related art, the update of the transmission parameters of the PDCCH by the base station mainly relies on RRC signaling. However, in the scenario of authorization-free uplink scheduling, the user is in the RRC IDLE state. At this time, the RRC connection is not established, so the traditional method is not applicable.

The solution provided by the embodiment of the present disclosure can provide a solution capable of updating the transmission parameters of the PDCCH of the base station in the unlicensed uplink scheduling.

The embodiments of the present disclosure provide a scheme for updating transmission parameters of the physical downlink control channel PDCCH, which can be applied in a wireless communication system to implement the terminal to transmit uplink data to the base station.

FIG. 1 is a schematic diagram showing the structure of a wireless communication system according to some exemplary embodiments. As shown in FIG. 1, the mobile communication system may include several terminals 110 and several base stations 120.

Wherein, the terminal 110 may be a device that provides voice and/or data connectivity to the user. The terminal 110 can communicate with one or more core networks via a radio access network (RAN). The terminal 110 can be an Internet of Things terminal, such as a sensor device, a mobile phone (or “cellular” phone), and The computer of the Internet of Things terminal, for example, may be a fixed, portable, pocket-sized, handheld, computer-built-in or vehicle-mounted device. For example, station (Station, STA), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), mobile station (mobile), remote station (remote station), access point, remote terminal ( remote terminal), access terminal (access terminal), user device (user terminal), user agent (user agent), user equipment (user device), or user terminal (user equipment, UE). Alternatively, the terminal 110 may also be a device of an unmanned aerial vehicle.

The base station 120 may be a network side device in a wireless communication system. Among them, the wireless communication system may be the 4th generation mobile communication (4G) system, also known as the Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as the new radio (NR) system. Alternatively, the wireless communication system may also be a next-generation system of the 5G system.

Wherein, the base station 120 may be an evolved base station (eNB) used in a 4G system. Alternatively, the base station 120 may also be a base station (gNB) adopting a centralized and distributed architecture in the 5G system. When the base station 120 adopts a centralized and distributed architecture, it usually includes a centralized unit (CU) and at least two distributed units (DU). The centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a media access control (Media Access Control, MAC) layer. The unit is provided with a physical (PHY) layer protocol stack, and the embodiment of the present disclosure does not limit the specific implementation of the base station 120.

A wireless connection can be established between the base station 120 and the terminal 110 through a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as The wireless air interface is a new air interface; or, the wireless air interface may also be a wireless air interface based on 5G-based next-generation mobile communication network technology standards.

Optionally, the foregoing wireless communication system may further include a network management device 130.

Several base stations 120 are connected to the network management device 130 respectively. The network management device 130 may be a core network device in a wireless communication system. For example, the network management device 130 may be a mobility management entity (Mobility Management Entity) in an evolved packet core network (Evolved Packet Core, EPC). MME). Alternatively, the network management device may also be other core network devices, such as Serving GateWay (SGW), Public Data Network GateWay (PGW), policy and charging rules function unit (Policy and Charging Rules). Function, PCRF) or Home Subscriber Server (HSS), etc. The embodiment of the present disclosure does not limit the implementation form of the network management device 130.

In the present disclosure, when the above-mentioned terminal transmits data to the base station, the uplink data can be repeatedly transmitted based on unauthorised uplink scheduling. In this process, the terminal can decide whether to terminate the uplink transmission according to the success of the uplink data transmission.

For example, please refer to FIG. 2, which is a schematic diagram showing a flow of PDCCH transmission parameter update according to an exemplary embodiment. As shown in Figure 2, in the unlicensed uplink scheduling scenario, the flow of PDCCH transmission parameters can be as follows:

In step 21, in the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, the base station sends update indication information to the terminal through the physical downlink control channel PDCCH.

Wherein, the update indication information is used to instruct the terminal to update the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter.

In step 22, the terminal receives the update indication information sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter during the process of sending uplink data through the unlicensed scheduling mechanism.

In step 23, the terminal updates the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter according to the update instruction information.

In the embodiment of the present disclosure, in the process of the terminal sending uplink data through the authorization-free scheduling mechanism, the base station can transmit update indication information to the terminal through the PDCCH to instruct the terminal to update the transmission parameters of the monitored PDCCH, thereby realizing the The scheme of reliance on the RRC connection to update the transmission parameters of the PDCCH extends the update scenario of the transmission parameters of the PDCCH.

Fig. 3 is a flowchart of a method for updating transmission parameters of PDCCH according to an exemplary embodiment. As shown in Fig. 3, the method for updating transmission parameters of PDCCH is applied to the wireless communication system shown in Fig. The method may include the following steps.

In step 301, in the process of sending uplink data through the unlicensed scheduling mechanism, the update indication information sent by the base station through the physical downlink control channel PDCCH is received through the first transmission parameter.

In step 302, according to the update instruction information, the first transmission parameter used when monitoring the PDCCH sent by the base station is updated to the second transmission parameter.

Extract the update indication information from the DCI.

In a possible implementation, the first transmission parameter includes at least one of initial monitoring time information, monitoring duration information, and the number of repeated transmissions of the PDCCH sent by the base station;

or,

In a possible implementation manner, the update indication information is used to indicate the updated sending parameter; the sending parameter is a parameter used by the terminal to send uplink data;

The updating the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter according to the update instruction information includes:

Obtaining an adjustment strategy for the first transmission parameter according to the sending parameter before the update and the sending parameter after the update;

According to the adjustment strategy of the first transmission parameter, the first transmission parameter is adjusted to the second transmission parameter.

Obtain the adjusted ratio of the number of repeated transmissions of the PDCCH sent by the base station according to the ratio of the number of repeated transmissions of the terminal sent and uploaded data before and after adjustment;

In a possible implementation manner, the adjusting the number of repeated transmissions included in the first transmission parameter according to the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station to obtain the second transmission parameter includes:

Fig. 4 is a flowchart of a method for updating transmission parameters of PDCCH according to an exemplary embodiment. As shown in Fig. 4, the method for updating transmission parameters of PDCCH is applied to the wireless communication system shown in Fig. The method may include the following steps.

In step 401, in the process of receiving the uplink data sent by the terminal through the unlicensed scheduling mechanism, the physical downlink control channel PDCCH is used to send update indication information to the terminal, and the update indication information is used to indicate that the terminal will be used to monitor the base station. The first transmission parameter used in the sent PDCCH is updated to the second transmission parameter.

In a possible implementation manner, the sending the update indication information to the terminal through the physical downlink control channel PDCCH includes:

The downlink control information DCI sent through the PDCCH and used to carry confirmation feedback, the confirmation feedback is used to indicate the successful reception of the uplink data, and the DCI includes the update indication information.

or,

In a possible implementation manner, the update indication information is used to indicate the updated sending parameter; the sending parameter is a parameter used by the terminal to send uplink data.

In a possible implementation manner, the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the sending parameter includes the number of repeated transmissions of the upload data sent by the terminal.

In the embodiment of the present disclosure, in the process of the terminal sending uplink data through the authorization-free scheduling mechanism, the base station can transmit update indication information to the terminal through the PDCCH to instruct the terminal to update the transmission parameters of the monitored PDCCH, thereby realizing the failure The scheme of reliance on the RRC connection to update the transmission parameters of the PDCCH extends the update scenario of the transmission parameters of the PDCCH.

Fig. 5 is a flowchart showing a method for updating transmission parameters of PDCCH according to an exemplary embodiment. As shown in Fig. 5, the method for updating transmission parameters of PDCCH is applied to the wireless communication system shown in Fig. 1, and the method may include The following steps.

In step 501, in the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, the base station sends update indication information to the terminal through the physical downlink control channel PDCCH.

In a possible implementation, when sending the update indication information to the terminal through the physical downlink control channel PDCCH, the base station may send the downlink control information DCI through the PDCCH to carry confirmation feedback, and the confirmation feedback is used to indicate successful reception. In the uplink data, the DCI includes the update indication information.

In a possible implementation manner, the base station may pre-configure transmission parameters for the terminal to be used for uplink transmission based on the authorization-free uplink scheduling mechanism, where the transmission parameters include uplink transmission resources, uplink transmission resources, Modulation and coding method used for uplink transmission, and multi-antenna transmission mode, etc.

Optionally, the foregoing sending parameter may be configured by the base station to the terminal through RRC signaling when the terminal is in the RRC connected state.

For example, when the terminal is powered on and accesses the network for the first time, it establishes an RRC connection with the base station, and the base station configures the above sending parameters to the terminal through the RRC connection so that the terminal can be based on authorization-free in the subsequent RRC idle state (ie IDLE state) Uplink scheduling mechanism for uplink transmission.

For example, the terminal goes to sleep after obtaining the transmission parameters configured by the base station, and when it wakes up one time later, it finds that there is uplink data that needs to be uploaded to the base station in the local storage, and the terminal is in the RRC idle state. At this time, the terminal can use authorization-free uplink scheduling The mechanism starts to transmit the uplink data on the resource pre-configured by the base station according to the above sending parameters.

After receiving the uplink data transmitted by the terminal through the unlicensed uplink scheduling mechanism, the base station can feedback the uplink data, that is, send confirmation feedback (such as ACK feedback) to the terminal through the DCI in the PDCCH.

In the embodiment of the present disclosure, when the base station needs to update the transmission parameters of the PDCCH, the update indication information may be carried in the DCI of the PDCCH carrying the confirmation feedback.

In step 502, the terminal receives the update indication information sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter during the process of sending the uplink data through the authorization-free scheduling mechanism.

In a possible implementation manner, when receiving the update indication information sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter, the terminal can monitor the base station sent through the physical downlink control channel PDCCH through the first transmission parameter, The downlink control information DCI used to carry confirmation feedback; the confirmation feedback is used to indicate successful reception of the uplink data; and the update indication information is extracted from the DCI.

In the embodiment of the present disclosure, in the process of sending uplink data through the authorization-free scheduling mechanism, the terminal monitors the confirmation feedback sent by the base station through the DCI in the PDCCH through the first transmission parameter, and if the DCI carries update prompt information, then The terminal also extracts the update prompt information contained in the DCI.

The above-mentioned time to start monitoring the PDCCH can be used to indicate an absolute time, that is, after the terminal wakes up, no matter whether it sends uplink data or not, it will monitor the PDCCH sent by the base station at the time point when it starts monitoring the PDCCH.

Alternatively, the above-mentioned time to start monitoring the PDCCH may also indicate the cheapness from the time when the base station starts uplink transmission, that is, the terminal is instructed to start monitoring the PDCCH sent by the base station at a preset time after starting the uplink transmission. For example, the terminal is instructed to start monitoring the PDCCH sent by the base station at several OFDM symbols after the start of uplink transmission, or the terminal is instructed to start monitoring the PDCCH sent by the base station after several repeated transmissions of uplink data.

In step 503, the terminal obtains the second transmission parameter carried in the update indication information, or obtains the parameter offset between the first transmission parameter and the second transmission parameter carried in the update indication information.

In the embodiment of the present disclosure, the update indication information includes the second transmission parameter; or, the update indication information includes the parameter offset between the first transmission parameter and the second transmission parameter.

In step 504, the terminal updates the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter according to the acquired second transmission parameter or parameter offset.

In the embodiments of the present disclosure, the manner in which the base station updates the transmission parameters of the PDCCH monitored on the terminal side may include the following two:

1) The higher layer defines a set of candidate parameters, and then the base station indicates one or a group of parameters through the PDCCH (that is, the second transmission parameter mentioned above). When the base station subsequently transmits ACK (that is, acknowledgement feedback) to the uplink data sent by the terminal through the PDCCH, The transmission can be performed according to the above specified parameters, and the terminal also performs related monitoring according to the specified parameters.

2) The upper layer defines a parameter offset set, and then the base station indicates one/a group of offset parameters through the PDCCH. The base station determines the updated parameter according to the originally configured parameters (ie, the first transmission parameter) and the offset parameters indicated above. Transmission parameters (that is, the above-mentioned second transmission parameters). When the base station subsequently transmits ACK to the uplink data sent by the terminal through the PDCCH, the transmission may be performed according to the determined transmission parameter, and the terminal may also perform related monitoring according to the determined transmission parameter.

For example, in the first transmission parameter, the number of repeated transmissions of the PDCCH of the uplink data transmission ACK sent by the base station to the terminal is 100 times, and the offset parameters defined by the higher layer include (+10, +20, -10, -20), and the base station The offset parameter indicated by the PDCCH is -10, so the number of repeated transmissions of the PDCCH in the finally determined second transmission parameter is 100-10=90 times.

Similarly, for example, in the first transmission parameter, the duration of continuous monitoring of the PDCCH is 100 OFDM symbols, and the offset parameters defined by the higher layer include (+10, +20, -10, -20), and the offset indicated by the base station through the PDCCH The parameter is -10, then the duration of continuous PDCCH monitoring in the finally determined second transmission parameter is 100-10=90 OFDM symbols.

For another example, in the first transmission parameter, the time to start monitoring the PDCCH is after the terminal performs 50 repeated transmissions of uplink data. The offset parameters defined by the higher layer include (+10, +20, -10, -20), and the base station passes The offset parameter indicated by the PDCCH is -10, then the time to start monitoring the PDCCH in the finally determined second transmission parameter is 50-10=40 OFDM symbols, that is, the time to start monitoring the PDCCH is 40 repeated transmissions of uplink data by the terminal after that.

In a possible implementation manner, the second transmission parameter is a parameter that instructs the terminal to end monitoring the PDCCH sent by the base station; or, the second transmission parameter is a parameter that instructs the terminal to monitor the PDCCH sent by the base station at least one subsequent time Parameters.

In the embodiments of the present disclosure, the parameter adjustment performed by the PDCCH can be for the current transmission or for all subsequent transmissions.

For example, the base station can terminate the current PDCCH monitoring time through the PDCCH. For example, when the base station side has no subsequent scheduling for the terminal, the base station can also notify the terminal to terminate the subsequent PDCCH monitoring while feeding back the ACK. This situation means that the PDCCH parameter adjustment is for the current transmission.

For another example, the base station adjusts the number of repeated transmissions of subsequent one/multiple/all PDCCH transmissions through the PDCCH, then this situation means that the PDCCH parameter adjustment is for the subsequent one/multiple/all PDCCH transmissions.

Fig. 6 is a flow chart showing a method for updating transmission parameters of PDCCH according to an exemplary embodiment. As shown in Fig. 6, the method for updating transmission parameters of PDCCH is applied to the wireless communication system shown in Fig. 1, and the method may include The following steps.

In step 601, in the process of receiving the uplink data sent by the terminal through the unlicensed scheduling mechanism, the base station sends update instruction information to the terminal through the physical downlink control channel PDCCH.

In step 602, the terminal receives the update indication information sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter during the process of sending the uplink data through the unlicensed scheduling mechanism.

For the execution process of the foregoing step 601 and step 602, reference may be made to the description of step 501 and step 502 in the embodiment shown in FIG. 5, which will not be repeated here.

In step 603, the terminal obtains the adjustment strategy of the first transmission parameter according to the transmission parameter before the update and the updated transmission parameter carried in the update indication information.

Wherein, the sending parameter is a parameter used by the terminal to send uplink data.

For the description of the sending parameter, reference may be made to the description of the sending parameter in the embodiment shown in FIG. 5, which will not be repeated here.

Among them, the sending parameters used by the terminal for uplink transmission can also be updated by the base station. That is, the base station indicates the updated sending parameters through the above update indication information. After the terminal receives the update indication information, it updates the sending parameters to this The updated sending parameters indicated by the update instruction information.

In the embodiment of the present disclosure, the above-mentioned update indication information is not only used to update the transmission parameters used by the terminal when performing uplink transmission, but can also be used to update the transmission parameters of the PDCCH used when the terminal monitors the PDCCH of the base station. That is to say, the foregoing update instruction information simultaneously updates the transmission parameters of the terminal and the transmission parameters of the PDCCH.

In step 604, the terminal adjusts the first transmission parameter to the second transmission parameter according to the adjustment strategy of the first transmission parameter.

In a possible implementation manner, the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the sending parameter includes the number of repeated transmissions of the terminal to send the uploaded data; the terminal according to the sending parameter before the update and When the updated transmission parameter obtains the adjustment strategy of the first transmission parameter, the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station can be obtained according to the ratio of the number of repeated transmissions of the upload data sent by the terminal before and after adjustment.

Correspondingly, when the terminal adjusts the first transmission parameter to the second transmission parameter according to the adjustment strategy of the first transmission parameter, the first transmission parameter may be adjusted according to the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station. The number of repetitive transmissions included in is adjusted to obtain the second transmission parameter.

In the embodiments of the present disclosure, the transmission parameters of the PDCCH can be linked with the transmission parameters used by the terminal when performing uplink data transmission. For example, it can be linked with the number of repeated transmissions or the transmission power of data transmission. For example, the number of repeated transmissions of the PDCCH for transmitting the ACK of the uplink data uploaded by the terminal by the base station may be scaled in proportion to the number of repeated transmissions of the uplink data transmitted by the terminal. For example, the proportional scaling formula can be as follows:

Among them, R-data in the above formula is the number of repeated transmissions in the updated sending parameters, R-data-initial is the number of repeated transmissions in the sending parameters before the update, and R-PDCCH-initial is the transmission of the PDCCH before the update The number of repeated transmissions in the parameter, and R-PDCCH is the number of repeated transmissions in the updated PDCCH transmission parameter.

In a possible implementation manner, the number of repeated transmissions included in the first transmission parameter is adjusted according to the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station, and the second transmission parameter is obtained by the terminal. The adjustment ratio of the number of repeated transmissions for sending the PDCCH is multiplied by the number of repeated transmissions included in the first transmission parameter to obtain a reference value for the number of repeated transmissions; then according to the reference value of the number of repeated transmissions and the number of PDCCH repeated transmissions supported by the base station, the The number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.

It should be noted that the R-PDCCH value calculated according to the above formula may be the number of repeated transmissions that the standard does not support. In this case, the R-PDCCH needs to be corrected. For example, when the R-PDCCH calculated by the above When the value is less than the minimum value X of the number of repeated transmissions of PUCCH that the base station can support, the R-PDCCH can be adjusted to a value greater than X. Alternatively, when the value of the R-PDCCH calculated through the foregoing is greater than the maximum value Y of the number of repeated transmissions of the PUCCH that the base station can support, the R-PDCCH may be adjusted to a value less than Y.

In the embodiment of the present disclosure, in the process of the terminal sending uplink data through the authorization-free scheduling mechanism, the base station can transmit update indication information to the terminal through the PDCCH to instruct the terminal to update the transmission parameters of the monitored PDCCH, thereby realizing the The scheme of relying on the RRC connection to update the transmission parameters of the PDCCH extends the update scenario of the transmission parameters of the PDCCH.

In the present disclosure, the solution shown in the embodiment corresponding to FIG. 5 and the solution shown in the embodiment corresponding to FIG. 6 can be used alone to update the transmission parameters of the PDCCH. For example, the base station and the terminal can directly instruct the terminal to update the start monitoring time, the continuous monitoring duration, and the number of repeated transmissions of the PDCCH in the transmission parameters of the PDCCH through the update indication information according to the solution shown in the corresponding embodiment in FIG. 5; Alternatively, the base station and the terminal separately follow the scheme shown in the corresponding embodiment in FIG. 6 to directly indicate the adjustment of the transmission parameters of the terminal through the update indication information, and then combine the adjustment strategy for the transmission parameters to obtain the adjustment strategy for the transmission parameters of the PDCCH , And then adjust and update the transmission parameters of the PDCCH.

Alternatively, the solution shown in the embodiment corresponding to FIG. 5 described above, and the solution shown in the embodiment corresponding to FIG. 6 may also be used in combination. For example, the base station and the terminal can directly instruct the terminal to update the start monitoring time and the continuous monitoring duration in the transmission parameters of the PDCCH according to the solution shown in the corresponding embodiment in FIG. 5; at the same time, between the base station and the terminal According to the solution shown in the corresponding embodiment in FIG. 6, the update instruction information directly instructs the adjustment of the transmission parameters of the terminal, and then combines the adjustment strategy of the transmission parameters to obtain the adjustment strategy of the transmission parameters of the PDCCH, and then the transmission parameters of the PDCCH Adjust and update the number of repeated transmissions in.

The following are device embodiments of the present disclosure, which can be used to implement the method embodiments of the present disclosure. For details that are not disclosed in the device embodiments of the present disclosure, please refer to the method embodiments of the present disclosure.

Fig. 7 is a block diagram of a device for updating transmission parameters of PDCCH according to an exemplary embodiment. As shown in Fig. 7, the device for updating transmission parameters of PDCCH can be implemented as shown in Fig. 1 through hardware or a combination of software and hardware. All or part of the terminal in the implementation environment is used to execute the steps executed by the terminal in any of the embodiments shown in FIG. 2, FIG. 3, FIG. 5, or FIG. 6. The apparatus for updating transmission parameters of the PDCCH may include:

The update indication information receiving module 701 is configured to receive, through the first transmission parameter, the update indication information sent by the base station through the physical downlink control channel PDCCH during the process of sending uplink data through the authorization-free scheduling mechanism;

The transmission parameter update module 702 is configured to update the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter according to the update indication information.

Extracting the update indication information from the DCI.

or,

In a possible implementation manner, the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the transmission parameter includes the number of repeated transmissions of the upload data sent by the terminal;

Fig. 8 is a block diagram showing a device for updating transmission parameters of PDCCH according to an exemplary embodiment. As shown in Fig. 8, the device for updating transmission parameters of PDCCH can be implemented as shown in Fig. 1 through hardware or a combination of software and hardware. All or part of the base station in the implementation environment is used to execute the steps performed by the base station in any of the embodiments shown in FIG. 2, FIG. 4, FIG. 5, or FIG. 6. The apparatus for updating transmission parameters of the PDCCH may include:

The update indication information sending module 801 is configured to send update indication information to the terminal through the physical downlink control channel PDCCH in the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, the update indication information being used to indicate The terminal updates the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter.

or,

An exemplary embodiment of the present disclosure also provides a PDCCH transmission parameter update system. The system includes a terminal and a base station.

The terminal includes the PDCCH transmission parameter update device provided in the embodiment shown in FIG. 7; the base station includes the PDCCH transmission parameter update device provided in the embodiment shown in FIG.

It should be noted that, when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used for illustration. In actual applications, the above functions can be allocated by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the device in the foregoing embodiment, the specific manner in which each module performs operation has been described in detail in the embodiment of the method, and detailed description will not be given here.

An exemplary embodiment of the present disclosure provides a PDCCH transmission parameter update device, which can implement all or part of the steps performed by the terminal in the embodiment shown in FIG. 2, FIG. 3, FIG. 5, or FIG. The transmission parameter update device of includes: a processor and a memory for storing executable instructions of the processor;

Among them, the processor is configured as:

An exemplary embodiment of the present disclosure provides a PDCCH transmission parameter update device, which can implement all or part of the steps performed by the base station in the embodiment shown in FIG. 2, FIG. 4, FIG. 5, or FIG. The transmission parameter update device of includes: a processor and a memory for storing executable instructions of the processor;

Among them, the processor is configured as:

The foregoing mainly takes terminals and base stations as examples to introduce the solutions provided by the embodiments of the present disclosure. It can be understood that, in order to realize the above-mentioned functions, the terminal and the base station include hardware structures and/or software modules corresponding to each function. In combination with the modules and algorithm steps of the examples described in the embodiments disclosed in the present disclosure, the embodiments of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present disclosure.

Fig. 9 is a schematic structural diagram showing a device for updating transmission parameters of PDCCH according to an exemplary embodiment. The apparatus 900 may be implemented as a terminal or a base station in each of the foregoing embodiments.

The device 900 includes a communication unit 904 and a processor 902. The processor 902 may also be a controller, which is represented as "controller/processor 902" in FIG. 9. The communication unit 904 is used to support the terminal to communicate with other network devices (such as base stations, etc.).

Further, the device 900 may further include a memory 903, and the memory 903 is configured to store program codes and data of the terminal 900.

It can be understood that FIG. 9 only shows a simplified design of the device 900. In practical applications, the device 900 may include any number of processors, controllers, memories, communication units, etc., and all terminals or base stations that can implement the embodiments of the present disclosure are within the protection scope of the embodiments of the present disclosure.

Those skilled in the art should be aware that in one or more of the foregoing examples, the functions described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

The embodiments of the present disclosure also provide a computer storage medium for storing computer software instructions used by the above-mentioned terminal or base station, which includes a program designed for executing the above-mentioned physical downlink control channel transmission parameter update method.

Those skilled in the art will easily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptive changes of the present disclosure. These variations, uses, or adaptive changes follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. . The description and the embodiments are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are pointed out by the following claims.

It should be understood that the present disclosure is not limited to the precise structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

A method for updating transmission parameters of a physical downlink control channel, wherein the method is executed by a terminal, and the method includes:

In the process of sending uplink data through the authorization-free scheduling mechanism, receiving the update indication information sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter;

According to the update instruction information, the first transmission parameter used when monitoring the PDCCH sent by the base station is updated to the second transmission parameter.
The method according to claim 1, wherein the receiving, through the first transmission parameter, the update indication information sent by the base station through the physical downlink control channel PDCCH comprises:

Monitoring the downlink control information DCI sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter and used to carry confirmation feedback; the confirmation feedback is used to indicate successful reception of the uplink data;

Extracting the update indication information from the DCI.
The method according to claim 1, wherein the first transmission parameter includes at least one of initial monitoring time information, monitoring duration information, and the number of repeated transmissions of the PDCCH sent by the base station;

Wherein, the initial monitoring time information is used to indicate the time to start monitoring the PDCCH; the monitoring duration information is used to indicate the duration of continuously monitoring the PDCCH.
The method according to claim 1, wherein:

The update indication information includes the second transmission parameter;

or,

The update indication information includes a parameter offset between the first transmission parameter and the second transmission parameter.
The method according to claim 1, wherein:

The second transmission parameter is a parameter that instructs the terminal to end monitoring the PDCCH sent by the base station;

or,

The second transmission parameter is a parameter instructing the terminal to monitor the PDCCH sent by the base station at least one subsequent time.
The method according to claim 1, wherein the update indication information is used to indicate updated sending parameters; the sending parameters are parameters used by the terminal to send uplink data;

The updating, according to the update instruction information, the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter includes:

Obtaining the adjustment strategy of the first transmission parameter according to the sending parameter before the update and the sending parameter after the update;

Adjust the first transmission parameter to the second transmission parameter according to the adjustment strategy of the first transmission parameter.
The method according to claim 6, wherein the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the sending parameter includes the number of repeated transmissions of the upload data sent by the terminal;

The obtaining the adjustment strategy of the first transmission parameter according to the sending parameter before the update and the sending parameter after the update includes:

Obtaining the adjusted ratio of the number of repeated transmissions of the PDCCH sent by the base station according to the ratio of the number of repeated transmissions of the upload data sent by the terminal before and after adjustment;

The adjusting the first transmission parameter to the second transmission parameter according to the adjustment strategy of the first transmission parameter includes:

According to an adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station, the number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.
The method according to claim 7, wherein the number of repeated transmissions included in the first transmission parameter is adjusted according to an adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station to obtain the second Transmission parameters, including:

Multiplying the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station by the number of repeated transmissions included in the first transmission parameter to obtain a reference value of the number of repeated transmissions;

According to the reference value of the number of repeated transmissions and the number of PDCCH repeated transmissions supported by the base station, the number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.
A method for updating transmission parameters of a physical downlink control channel, wherein the method is executed by a base station, and the method includes:

In the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, the physical downlink control channel PDCCH is used to send update indication information to the terminal, and the update indication information is used to indicate that the terminal will be used to monitor the base station sending The first transmission parameter used in the PDCCH is updated to the second transmission parameter.
The method according to claim 9, wherein the sending update indication information to the terminal through a physical downlink control channel (PDCCH) comprises:

Downlink control information DCI sent through the PDCCH and used to carry confirmation feedback, where the confirmation feedback is used to indicate successful reception of the uplink data, and the DCI includes the update indication information.
The method according to claim 9, wherein the first transmission parameter includes at least one of initial monitoring time information, monitoring duration information, and the number of repeated transmissions of the PDCCH sent by the base station;

Wherein, the initial monitoring time information is used to indicate the time to start monitoring the PDCCH; the monitoring duration information is used to indicate the duration of continuously monitoring the PDCCH.
The method according to claim 9, wherein:

The update indication information includes the second transmission parameter;

or,

The update indication information includes a parameter offset between the first transmission parameter and the second transmission parameter.
The method according to claim 9, wherein:

The second transmission parameter is a parameter that instructs the terminal to end monitoring the PDCCH sent by the base station;

or,

The second transmission parameter is a parameter instructing the terminal to monitor the PDCCH sent by the base station at least one subsequent time.
The method according to claim 9, wherein the update indication information is used to indicate an updated transmission parameter; the transmission parameter is a parameter used by the terminal to transmit uplink data.
The method according to claim 14, wherein the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the transmission parameter includes the number of repeated transmissions of the upload data sent by the terminal.
A device for updating transmission parameters of a physical downlink control channel, wherein the device is used in a terminal, and the device includes:

The update indication information receiving module is configured to receive, through the first transmission parameter, the update indication information sent by the base station through the physical downlink control channel PDCCH during the process of sending uplink data through the authorization-free scheduling mechanism;

The transmission parameter update module is configured to update the first transmission parameter used when monitoring the PDCCH sent by the base station to the second transmission parameter according to the update indication information.
The device according to claim 16, wherein the update instruction information receiving module is configured to:

Monitoring the downlink control information DCI sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter and used to carry confirmation feedback; the confirmation feedback is used to indicate successful reception of the uplink data;

Extracting the update indication information from the DCI.
The apparatus according to claim 16, wherein the first transmission parameter comprises at least one of initial monitoring time information, monitoring duration information, and the number of repeated transmissions of the PDCCH sent by the base station;

Wherein, the initial monitoring time information is used to indicate the time to start monitoring the PDCCH; the monitoring duration information is used to indicate the duration of continuously monitoring the PDCCH.
The device according to claim 16, wherein:

The update indication information includes the second transmission parameter;

or,

The update indication information includes a parameter offset between the first transmission parameter and the second transmission parameter.
The device according to claim 16, wherein:

The second transmission parameter is a parameter that instructs the terminal to end monitoring the PDCCH sent by the base station;

or,

The second transmission parameter is a parameter instructing the terminal to monitor the PDCCH sent by the base station at least one subsequent time.
The apparatus according to claim 16, wherein the update indication information is used to indicate updated transmission parameters; the transmission parameters are parameters used by the terminal to send uplink data; the transmission parameter update module, Used for

Obtaining the adjustment strategy of the first transmission parameter according to the sending parameter before the update and the sending parameter after the update;

Adjust the first transmission parameter to the second transmission parameter according to the adjustment strategy of the first transmission parameter.
The apparatus according to claim 21, wherein the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the sending parameter includes the number of repeated transmissions of the upload data sent by the terminal;

When the adjustment strategy of the first transmission parameter is obtained according to the transmission parameter before the update and the transmission parameter after the update, the transmission parameter update module is configured to send the upload data according to the number of repeated transmissions of the terminal The ratio before and after adjustment, obtaining the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station;

When the first transmission parameter is adjusted to the second transmission parameter according to the adjustment strategy of the first transmission parameter, the transmission parameter update module is configured to adjust the number of repeated transmissions of the PDCCH sent by the base station Ratio, the number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.
The apparatus according to claim 22, wherein the number of repeated transmissions included in the first transmission parameter is adjusted according to an adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station to obtain the second transmission When parameters, the transmission parameter update module is used to:

Multiplying the adjustment ratio of the number of repeated transmissions of the PDCCH sent by the base station by the number of repeated transmissions included in the first transmission parameter to obtain a reference value of the number of repeated transmissions;

According to the reference value of the number of repeated transmissions and the number of PDCCH repeated transmissions supported by the base station, the number of repeated transmissions included in the first transmission parameter is adjusted to obtain the second transmission parameter.
A device for updating transmission parameters of a physical downlink control channel, wherein the device is used in a base station, and the device includes:

The update indication information sending module is used to send update indication information to the terminal through the physical downlink control channel PDCCH in the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, and the update indication information is used to instruct the terminal The first transmission parameter used when monitoring the PDCCH sent by the base station is updated to the second transmission parameter.
The device of claim 24, wherein:

The update indication information sending module is configured to send downlink control information DCI for carrying confirmation feedback sent through the PDCCH, the confirmation feedback is used to indicate successful reception of the uplink data, and the DCI includes the update indication information.
The apparatus according to claim 24, wherein the first transmission parameter comprises at least one of initial monitoring time information, monitoring duration information, and the number of repeated transmissions of the PDCCH sent by the base station;

Wherein, the initial monitoring time information is used to indicate the time to start monitoring the PDCCH; the monitoring duration information is used to indicate the duration of continuously monitoring the PDCCH.
The device of claim 24, wherein:

The update indication information includes the second transmission parameter;

or,

The update indication information includes a parameter offset between the first transmission parameter and the second transmission parameter.
The device of claim 24, wherein:

The second transmission parameter is a parameter that instructs the terminal to end monitoring the PDCCH sent by the base station;

or,

The second transmission parameter is a parameter instructing the terminal to monitor the PDCCH sent by the base station at least one subsequent time.
The apparatus according to claim 24, wherein the update indication information is used to indicate updated sending parameters; and the sending parameters are parameters used by the terminal to send uplink data.
The apparatus according to claim 29, wherein the first transmission parameter includes the number of repeated transmissions of the PDCCH sent by the base station, and the transmission parameter includes the number of repeated transmissions of the upload data sent by the terminal.
A transmission parameter update system for a physical downlink control channel, wherein the system includes: a terminal and a base station;

The terminal includes the transmission parameter update device of the physical downlink control channel according to any one of claims 16 to 23;

The base station includes the transmission parameter update device of the physical downlink control channel according to any one of claims 24 to 30.
A device for updating transmission parameters of a physical downlink control channel, wherein the device is used in a terminal, and the device includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

In the process of sending uplink data through the authorization-free scheduling mechanism, receiving the update indication information sent by the base station through the physical downlink control channel PDCCH through the first transmission parameter;

According to the update instruction information, the first transmission parameter used when monitoring the PDCCH sent by the base station is updated to the second transmission parameter.
A device for updating transmission parameters of a physical downlink control channel, wherein the device is used in a base station, and the device includes:

processor;

A memory for storing executable instructions of the processor;

Wherein, the processor is configured to:

In the process of receiving the uplink data sent by the terminal through the authorization-free scheduling mechanism, the physical downlink control channel PDCCH is used to send update indication information to the terminal, and the update indication information is used to indicate that the terminal will be used to monitor the base station sending The first transmission parameter used in the PDCCH is updated to the second transmission parameter.
A computer-readable storage medium, characterized in that the computer-readable storage medium contains executable instructions, and a processor in a terminal calls the executable instructions to implement the physical properties described in any one of claims 1 to 8. Transmission parameter update method of the downlink control channel.
A computer-readable storage medium, characterized in that the computer-readable storage medium contains executable instructions, and a processor in a base station calls the executable instructions to implement the physical properties of any one of claims 9 to 15 Transmission parameter update method of the downlink control channel.