CN114828228A

CN114828228A - PDCCH transmission method, device, terminal and network side equipment

Info

Publication number: CN114828228A
Application number: CN202110065059.9A
Authority: CN
Inventors: 宋磊; 苏昕; 高秋彬
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-29
Also published as: WO2022152052A1

Abstract

The invention provides a PDCCH transmission method, a device, a terminal and network side equipment, wherein the method comprises the following steps: receiving configuration information which is sent by network side equipment and used for inter-slot PDCCH repeated transmission; according to the configuration information, determining time slots of at least two transmission occasions of PDCCH repeated transmission and transmission resources of the time slot of each transmission occasion; and monitoring the transmission of the PDCCH by adopting the transmission resources corresponding to the determined time slots of the at least two transmission opportunities. By adopting the transmission method, the method can adapt to the condition that the repeated transmission times are more than 1 when the network equipment configuration terminal carries out the PDCCH repeated transmission between time slots, and ensure the reliability of the PDCCH transmission.

Description

PDCCH transmission method, device, terminal and network side equipment

Technical Field

The present invention relates to the field of wireless technologies, and in particular, to a method, an apparatus, a terminal, and a network side device for transmitting a physical downlink control channel PDCCH.

Background

At present, under the condition of supporting PDCCH repeated transmission, a repeated transmission method of a Physical Downlink Shared Channel (PDSCH) or a Physical Uplink Shared Channel (PUSCH) cannot be reused easily, the number of repetitions of PDCCH configuration is usually less than the number of repetitions of PDSCH or PUSCH, for example, the maximum number of repetitions of PDCCH configuration is 2, and when an unavailable slot or symbol is encountered, if transmission of a certain slot is simply abandoned, the number of transmissions is caused to be 1, and reliability of PDCCH transmission is affected. In addition, limited by PDCCH transmission resources, PDCCH transmission resource resources of different time slots may be different, and if the PDSCH or PUSCH repeated transmission method is simply reused, transmission resources occupied by two time slots are the same, which may cause that the PDCCH transmitted in a certain time slot is not in a state to be monitored, i.e., the terminal may not monitor the PDCCH, and may also affect the reliability of PDCCH transmission.

Disclosure of Invention

The invention aims to provide a method, a device, a terminal and network side equipment for transmitting a Physical Downlink Control Channel (PDCCH), which are used for realizing reliable transmission when the repeated transmission times of the PDCCH is more than 1.

In order to solve the above technical problem, an embodiment of the present invention provides a PDCCH transmission method, which is applied to a terminal, where the method includes:

receiving configuration information which is sent by network side equipment and used for inter-slot PDCCH repeated transmission;

according to the configuration information, determining time slots of at least two transmission occasions of PDCCH repeated transmission and transmission resources of the time slot of each transmission occasion;

and monitoring the transmission of the PDCCH by adopting the transmission resources corresponding to the determined time slots of the at least two transmission opportunities.

Optionally, in the PDCCH transmission method, the configuration information includes signaling for indicating PDCCH time slot retransmission and/or transmission configuration for PDCCH retransmission.

Optionally, the PDCCH transmission method, wherein the transmission configuration includes at least one of:

a time slot in which one transmission opportunity of PDCCH repeated transmission is located in each transmission period;

a transmission period or offset of one transmission opportunity for which the PDCCH is repeatedly transmitted in each transmission period;

time slots in which at least two transmission opportunities repeatedly transmitted by the PDCCH are respectively located within a preset time period;

the transmission resources of the time slot in which at least two transmission opportunities repeatedly transmitted by the PDCCH are located within a preset time period;

a first time slot of PDCCH repeated transmission within a preset time period;

a time slot of a first transmission opportunity of PDCCH repeated transmission in a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

an association between transmission resources of different transmission occasions for PDCCH repetition transmission.

Optionally, in the PDCCH transmission method, the transmission resource includes at least one of a control resource set, CORESET, a search space set, SS set, and a PDCCH candidate resource.

Optionally, the PDCCH transmission method, wherein when the configuration information includes a time slot of a transmission opportunity of PDCCH repeated transmission in each transmission period, determining the time slots of at least two transmission opportunities of PDCCH repeated transmission according to the configuration information includes:

if the configuration information includes a time slot of a kth transmission opportunity repeatedly transmitted by the PDCCH in each transmission period, determining that the time slot of the kth transmission opportunity is the time slot indicated in the configuration information, and determining time slots of other transmission opportunities by adopting one of the following methods:

the time slot of other transmission opportunity is the time slot of the kth transmission opportunity;

the time slot of other transmission opportunity is the last time slot or the next time slot of the kth transmission opportunity;

the time slots of other transmission opportunities comprise K-1 available time slots before the time slot of the kth transmission opportunity and K-K available time slots after the time slot of the kth transmission opportunity; wherein K is the maximum number of repeated transmissions of the PDCCH, and K is greater than or equal to 1 and less than or equal to K.

Optionally, the PDCCH transmission method, wherein,

if the configuration information includes a time slot in which a kth transmission opportunity repeatedly transmitted by the PDCCH in each transmission period is located, when the available time slot does not exist in a preset time window, the time slots in which other transmission opportunities are located are the time slots in which the kth transmission opportunity is located.

Optionally, the PDCCH transmission method includes: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

Optionally, the PDCCH transmission method, wherein the determining, according to the configuration information, time slots of at least two transmission occasions of PDCCH repeated transmission when the configuration information includes a first time slot of PDCCH repeated transmission in a preset time period, or includes a time slot of a first transmission occasion of PDCCH repeated transmission in a preset time period includes:

determining the available time slot in a preset time period after the time slot of the first time slot or the first transmission opportunity;

determining that every K continuous available time slots in the available time slots are respectively used for transmitting K repeated transmissions of one PDCCH; wherein K is the maximum number of repeated transmissions of the PDCCH.

Optionally, the PDCCH transmission method, wherein determining an available time slot within a preset time period after a time slot of a first time slot or a first transmission opportunity includes:

determining a time range of PDCCH repeated transmission according to the relevant configuration information of a first time slot or a time slot of a first transmission opportunity of PDCCH repeated transmission within a preset time period configured by network side equipment;

and determining the available time slot which can be used for PDCCH repeated transmission in the time range according to the uplink and downlink configuration high-layer signaling, the SFI indication or the PDCCH transmission resource.

Optionally, in the PDCCH transmission method, the configuration information about the time slot in which the first time slot or the first transmission opportunity is located includes at least one of the following:

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, in the PDCCH transmission method, when the network side device does not configure a DCI signaling indicating SFI indication by a terminal monitoring slot format indication, the available time slot is a downlink time slot indicated by a higher layer signaling in a preset time period, a time slot indicated by the higher layer signaling is flexible and preconfigured to be capable of being used for PDCCH transmission, a downlink time slot having SS sets to be monitored, or a downlink time slot having the same PDCCH transmission resources for PDCCH transmission of a time slot indicated by the transmission configuration or a time slot in which a transmission opportunity is located;

under the condition that the network side equipment configures the terminal SFI to indicate the DCI signaling, the available time slot is a downlink time slot indicated by a high-level signaling in a preset time period, a time slot which is indicated by the high-level signaling and is flexible and preset to be capable of being used for PDCCH transmission, a time slot which is indicated by the high-level signaling to be flexible and is indicated by the SFI to be provided with a downlink symbol, a downlink time slot with an SS set to be monitored, or a downlink time slot with the same PDCCH transmission resource for PDCCH transmission of the time slot indicated by the transmission configuration or the time slot of the transmission opportunity.

Optionally, the PDCCH transmission method, wherein determining that every K consecutive available slots in the available slots are respectively used for transmitting K repeated transmissions of one PDCCH includes:

and determining the time slot occupied by each repeated transmission according to the number K of the repeated transmission required by each repeated transmission, wherein each K continuous available time slots are respectively used for transmitting the K repeated transmissions of one PDCCH.

Optionally, in the PDCCH transmission method, the transmission resource configured by the network side device includes at least one of:

the transmission resource configured by the network side equipment is a transmission resource configured for one transmission opportunity;

the transmission resource configured by the network side equipment is a transmission resource configured for each transmission opportunity;

the transmission resource configured by the network side equipment is a transmission resource configured for PDCCH repeated transmission.

Optionally, the PDCCH transmission method, wherein the transmission resource configured by the network side device further includes at least one of the following:

the transmission resources of different transmission occasions for the PDCCH repeated transmission are the same;

the transmission resources for different transmission occasions for PDCCH repeated transmissions are different.

Optionally, in the PDCCH transmission method, determining, according to the configuration information, a transmission resource of a time slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of:

in the configuration information, the transmission resource configured by the network side equipment is the transmission resource configured for each transmission opportunity, and the transmission resource corresponding to the time slot of each transmission opportunity is determined according to the configuration information;

in the configuration information, when the transmission resource configured by the network side device is a transmission resource configured for one transmission opportunity, and the configuration information includes an association relationship between transmission resources of different transmission opportunities for PDCCH repeated transmission, a transmission resource corresponding to a time slot in which another transmission opportunity is located is determined according to the transmission resource of one transmission opportunity configured in the configuration information and the association relationship.

Optionally, the PDCCH transmission method includes:

and if the determined transmission resource is not in the state to be monitored configured by the search space set SS set, determining that the corresponding transmission resource is also used for PDCCH transmission.

Optionally, in the PDCCH transmission method, when the transmission configuration includes a time slot where one transmission opportunity of PDCCH repeated transmission is located in each transmission cycle, the method further includes:

acquiring transmission indication information indicated by the network side equipment through the dynamic signaling;

the transmission indication information includes at least one of:

indicating other transmission occasions to carry out time slots of PDCCH repeated transmission;

indicating other transmission occasions to carry out transmission resources of PDCCH repeated transmission;

instructing other transmission occasions to give up or defer from PDCCH repeat transmissions.

Optionally, in the PDCCH transmission method, the configuration information is indicated by at least one of a high layer signaling, a MAC CE signaling, and a DCI signaling.

The embodiment of the present invention further provides another PDCCH transmission method, which is applied to a network side device, wherein the method includes:

sending configuration information for inter-slot PDCCH repeated transmission to a terminal;

and on the time slots of the determined at least two transmission occasions, adopting the transmission resources corresponding to the time slots to carry out the transmission of the PDCCH.

Optionally, in the PDCCH transmission method, the configuration information includes signaling for indicating PDCCH inter-slot retransmission and/or transmission configuration for PDCCH retransmission.

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

Optionally, in the PDCCH transmission method, if the configuration information includes a time slot in which a kth transmission opportunity repeatedly transmitted by the PDCCH in each transmission period is located, when the available time slot does not exist in the preset time window, time slots in which other transmission opportunities are located are time slots in which the kth transmission opportunity is located.

Optionally, the PDCCH transmission method further includes: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, the PDCCH transmission method includes:

transmitting indication information indicated by dynamic signaling;

the transmission indication information includes at least one of:

Optionally, in the PDCCH transmission method, the configuration information is indicated by at least one of a higher layer signaling, a MAC CE signaling, and a DCI signaling.

An embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the content of the first and second substances,

the transceiver is used for receiving configuration information which is sent by network side equipment and used for inter-slot PDCCH repeated transmission;

the processor is used for reading the program in the memory and executing the following processes;

Optionally, the terminal, wherein the configuration information includes signaling for indicating PDCCH inter-slot retransmission and/or transmission configuration for PDCCH retransmission.

Optionally, the terminal, wherein the transmission configuration includes at least one of:

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repeat transmission;

Optionally, the terminal, wherein the transmission resource includes at least one of a control resource set CORESET, a search space set SS set, and a PDCCH candidate resource.

Optionally, in the terminal, when the configuration information includes a time slot of a transmission opportunity where the PDCCH is repeatedly transmitted in each transmission period, determining time slots of at least two transmission opportunities where the PDCCH is repeatedly transmitted according to the configuration information includes:

Optionally, the terminal, wherein,

Optionally, the terminal, wherein the processor is further configured to: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

Optionally, in the terminal, when the configuration information includes a first time slot of PDCCH repeated transmission in a preset time period, or includes a time slot of a first transmission opportunity of PDCCH repeated transmission in a preset time period, the processor determines, according to the configuration information, time slots of at least two transmission opportunities of PDCCH repeated transmission, including:

Optionally, the terminal, wherein the determining, by the processor, an available timeslot in a preset time period after a timeslot where the first timeslot or the first transmission opportunity is located includes:

Optionally, in the terminal, the configuration information about the time slot in which the first time slot or the first transmission opportunity is located includes at least one of:

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, in the terminal, when the network side device does not configure the DCI signaling indicated by the terminal monitoring time slot format indication SFI, the available time slot is a downlink time slot indicated by a high layer signaling in a preset time period, a time slot indicated by the high layer signaling, which is flexible and preconfigured as being capable of being used for PDCCH transmission, a downlink time slot having SS sets to be monitored, or a downlink time slot having the same PDCCH transmission resource for PDCCH transmission of a time slot indicated by the transmission configuration or a time slot where a transmission opportunity is located;

Optionally, in the terminal, the determining, by the processor, that each K consecutive available slots in the available slots are respectively used for K repeated transmissions of one PDCCH includes:

Optionally, the terminal, wherein the transmission resource configured by the network side device includes at least one of:

Optionally, the terminal, where the transmission resource configured by the network side device further includes at least one of the following:

Optionally, in the terminal, the processor determines, according to the configuration information, that the transmission resource of the time slot in which each transmission opportunity of the PDCCH repeated transmission is located includes at least one of:

Optionally, the terminal, wherein the processor is further configured to:

Optionally, in the terminal, when the transmission configuration includes a time slot of a transmission opportunity where PDCCH is repeatedly transmitted in each transmission period, the processor is further configured to:

the transmission indication information includes at least one of:

Optionally, in the terminal, the configuration information is indicated by at least one of a higher layer signaling, a MAC CE signaling of a MAC control layer, and a DCI signaling of downlink control information.

An embodiment of the present invention further provides a network side device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the content of the first and second substances,

the transceiver is used for sending configuration information for inter-slot PDCCH repeated transmission to the terminal;

the processor is used for determining time slots of at least two transmission occasions for PDCCH repeated transmission and transmission resources of the time slot of each transmission occasion according to the configuration information;

Optionally, the network side device, wherein the configuration information includes a signaling for indicating PDCCH inter-slot retransmission and/or a transmission configuration for PDCCH retransmission.

Optionally, the network side device, wherein the transmission configuration includes at least one of:

a time slot in which a transmission opportunity of PDCCH repeated transmission in each transmission period is located;

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

Optionally, in the network side device, the transmission resource includes at least one of a control resource set CORESET, a search space set SS set, and a PDCCH candidate resource.

Optionally, the network side device, wherein, when the configuration information includes a time slot of a transmission opportunity where PDCCH is repeatedly transmitted in each transmission cycle, determining the time slots of at least two transmission opportunities where PDCCH is repeatedly transmitted according to the configuration information includes:

Optionally, in the network side device, if the configuration information includes a timeslot where a kth transmission opportunity repeatedly transmitted by the PDCCH in each transmission period is located, when the available timeslot does not exist in the preset time window, the timeslot where other transmission opportunities are located is the timeslot where the kth transmission opportunity is located.

Optionally, the network-side device, wherein the processor is further configured to: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

Optionally, in the network side device, when the configuration information includes a first time slot of PDCCH repeated transmission in a preset time period, or includes a time slot of a first transmission opportunity of PDCCH repeated transmission in a preset time period, the processor determines, according to the configuration information, time slots of at least two transmission opportunities of PDCCH repeated transmission, including:

Optionally, the network side device, wherein the determining, by the processor, an available timeslot in a preset time period after a timeslot where the first timeslot or the first transmission opportunity is located includes:

Optionally, the network side device, wherein the configuration information about the time slot in which the first time slot or the first transmission opportunity is located includes at least one of:

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, the network side device, wherein, when the network side device does not configure a DCI signaling indicating SFI indication by a terminal monitoring slot format indication, the available time slot is a downlink time slot indicated by a higher layer signaling in a preset time period, a time slot indicated by the higher layer signaling is flexible and preconfigured to be capable of being used for PDCCH transmission, a downlink time slot having SS sets to be monitored, or a downlink time slot having the same PDCCH transmission resources for PDCCH transmission of a time slot indicated by the transmission configuration or a time slot in which a transmission opportunity is located;

Optionally, the network side device, wherein the processor determines that every K consecutive available slots in the available slots are respectively used for K times of repeated transmission for transmitting one PDCCH, and the determining includes:

Optionally, the network side device, wherein the transmission resource configured by the network side device includes at least one of:

Optionally, the network side device, wherein the transmission resource configured by the network side device further includes at least one of:

Optionally, the network side device, wherein the processor determines, according to the configuration information, that the transmission resource of the time slot in which each transmission opportunity of the PDCCH repeated transmission is located includes at least one of:

Optionally, the network-side device, wherein the processor is further configured to:

Optionally, the network side device, wherein when the transmission configuration includes a time slot where one transmission opportunity of PDCCH repeated transmission is located in each transmission cycle, the method further includes:

transmitting indication information indicated by dynamic signaling;

the transmission indication information includes at least one of:

Optionally, in the network side device, the configuration information is indicated by at least one of a higher layer signaling, a MAC CE signaling, and a DCI signaling.

The embodiment of the invention also provides a PDCCH transmission device, which is applied to a terminal, wherein the device comprises:

an information receiving unit, configured to receive configuration information for inter-slot PDCCH repeated transmission sent by a network side device;

a first processing unit, configured to determine, according to the configuration information, time slots of at least two transmission occasions in which the PDCCH is repeatedly transmitted and transmission resources of a time slot in which each transmission occasion is located;

and the monitoring unit is used for monitoring the transmission of the PDCCH by adopting the transmission resources corresponding to the determined time slots of the at least two transmission opportunities.

The embodiment of the present invention further provides a PDCCH transmission apparatus, which is applied to a network side device, wherein the apparatus includes:

an information sending unit, configured to send configuration information for inter-slot PDCCH repeated transmission to a terminal;

a second processing unit, configured to determine, according to the configuration information, time slots of at least two transmission occasions in which the PDCCH is repeatedly transmitted and transmission resources of a time slot in which each transmission occasion is located;

and the transmission unit is used for adopting the transmission resources corresponding to the determined time slots to carry out the transmission of the PDCCH on the time slots where the at least two transmission opportunities are located.

An embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is configured to enable the processor to execute the PDCCH transmission method according to any one of the above.

The technical scheme of the invention has the following beneficial effects:

by adopting the PDCCH transmission method provided by the embodiment of the invention, the terminal can determine the time slots of at least two transmission occasions of PDCCH repeated transmission and the transmission resource of the time slot of each transmission occasion according to the configuration information which is sent by the network side equipment and used for the PDCCH repeated transmission between the time slots, and the transmission of the PDCCH is monitored by adopting the transmission resource corresponding to the time slot, so that the method can be suitable for the condition that the repeated transmission times is more than 1 when the network equipment configures the terminal to carry out the PDCCH repeated transmission between the time slots, and the reliability of the PDCCH transmission is ensured.

Drawings

Fig. 1 is a schematic diagram of a system architecture adopting the PDCCH transmission method according to the embodiment of the present invention;

fig. 2 is a flowchart illustrating a PDCCH transmission method according to an embodiment of the present invention;

fig. 3 is a schematic time slot diagram of a PDCCH transmission method according to an embodiment of the present invention;

fig. 4 is a second schematic time slot diagram of the PDCCH transmission method according to the embodiment of the invention;

fig. 5 is a third schematic time slot diagram of the PDCCH transmission method according to the embodiment of the present invention;

fig. 6 is a fourth schematic time slot diagram of the PDCCH transmission method according to the embodiment of the present invention;

fig. 7 is a fifth schematic time slot diagram of the PDCCH transmission method according to the embodiment of the present invention;

fig. 8 is a sixth schematic time slot diagram of the PDCCH transmission method according to the embodiment of the present invention;

fig. 9 is a flowchart illustrating a PDCCH transmission method according to another embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an apparatus for PDCCH transmission according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a PDCCH transmitting apparatus according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The term "plurality" in the embodiments of the present invention means two or more, and other terms are similar thereto.

The embodiment of the invention provides a PDCCH transmission method and a PDCCH transmission device, which are used for realizing reliable transmission when the number of times of PDCCH repeated transmission is more than 1.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

The technical scheme provided by the embodiment of the invention can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

As shown in fig. 1, which is a schematic structural diagram of a wireless communication system adopting the PDCCH transmission method according to the embodiment of the present invention, a network side device 10 and a terminal device (or called terminal), for example, a terminal is denoted as UE11, and UE11 may be connected to the network side device 10. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.

The terminal device according to the embodiments of the present invention may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, e.g., a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the Radio Access Network. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present invention.

The network side device related to the embodiment of the present invention may be a base station, and the base station may include a plurality of cells for providing services for the terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present invention may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present invention. In some network architectures, a network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

The embodiment of the invention provides a PDCCH transmission method aiming at the problems that in the prior art, a PDCCH transmission mode cannot adapt to the condition of PDCCH repeated transmission and the reliability of PDCCH transmission is influenced.

For clarity of the PDCCH transmission method according to the embodiment of the present invention, the meaning of the related features mentioned below is explained. Herein, one transmission opportunity in which PDCCH is repeatedly transmitted may also be referred to as one transmission opportunity or one slot. The range defined by the "available time slot" defined in the embodiments of the present invention includes the range defined by the available monitoring opportunity, the available time unit, the available resource, or the available symbol.

As shown in fig. 2, a PDCCH transmission method according to an embodiment of the present invention is applied to a terminal, and the method includes:

s210, receiving configuration information which is sent by network side equipment and used for inter-slot PDCCH repeated transmission;

s220, determining time slots of at least two transmission occasions of PDCCH repeated transmission and transmission resources of the time slot of each transmission occasion according to the configuration information;

and S230, monitoring the transmission of the PDCCH by adopting the transmission resources corresponding to the determined time slots of the at least two transmission opportunities.

By adopting the PDCCH transmission method of the embodiment of the invention, the configuration information for the inter-slot PDCCH repeated transmission is sent to the terminal through the network side equipment, so that the terminal can determine the time slots of at least two transmission occasions of the PDCCH repeated transmission and the transmission resource of the time slot of each transmission occasion according to the configuration information, and the transmission of the PDCCH is monitored by adopting the transmission resource corresponding to the time slot, thereby being suitable for the condition that the repeated transmission times are more than 1 (the number of the transmission occasions is more than 1) or K times of configured repetitions (the corresponding repeated times are more than 2) when the network equipment configures the terminal to perform the inter-slot PDCCH repeated transmission, and ensuring the reliability of the PDCCH transmission.

Optionally, the configuration information includes signaling for indicating PDCCH inter-slot repeat transmission and/or transmission configuration for PDCCH repeat transmission.

The configuration information enables the terminal to be started or closed to monitor the PDCCH repeated transmission between the time slots through a signaling for indicating the PDCCH repeated transmission between the time slots.

Optionally, the signaling indicated in the configuration information may include different indication symbols, which are used to respectively indicate the terminal to turn on the inter-slot PDCCH retransmission and turn off the inter-slot PDCCH retransmission.

In this embodiment of the present invention, optionally, in the transmission configuration used for PDCCH retransmission included in the configuration information, the network side device configures time slot information or cycle information of one transmission opportunity for the terminal, or configures time slot information of a first transmission opportunity in a preset time period for the terminal, or configures time slot information of two or more transmission opportunities for the terminal, or configures transmission resources of one or more transmission opportunities for the terminal, and the terminal determines, according to the transmission configuration sent by the network side device, time slots of at least two transmission opportunities for PDCCH retransmission and transmission resources of a time slot in which each transmission opportunity is located.

Optionally, in step S220, the terminal determines, according to the configuration information, time slots of at least two transmission occasions for PDCCH repeated transmission and transmission resources of a time slot in which each transmission occasion is located, where the time slots include at least one of the following:

the terminal determines the time slot of other transmission opportunity in each repetition period according to the time slot or cycle information of one transmission opportunity configured by the network side equipment;

the terminal determines the time slot of other transmission opportunity of the first repeated transmission and the time slot of each other transmission time slot of the other repeated transmission according to the time slot of the first transmission opportunity configured by the network side equipment;

the terminal determines the time slot information of the transmission opportunity of each repeated transmission within the preset time according to the time slots of two or more transmission opportunities configured by the network side equipment;

the terminal determines transmission resources for one or more transmission occasions.

Optionally, in the PDCCH transmission method according to the embodiment of the present invention, in step S210, the transmission configuration in the configuration information received by the terminal includes at least one of the following:

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

In this embodiment of the present invention, optionally, the configuration Information is indicated by at least one of a high-layer signaling, a Media Access Control (MAC) Control Element (CE) signaling, and a Downlink Control Information (DCI) signaling.

In the PDCCH transmission method according to the embodiment of the present invention, when the transmission configuration sent by the network side device includes different information, the terminal determines the time slots of at least two transmission occasions of PDCCH repeated transmission and the transmission resource of the time slot in which each transmission occasion is located.

Example one

In this embodiment, in step S210, the transmission configuration included in the configuration information includes:

a time slot in which one transmission opportunity of PDCCH repeated transmission is located in each transmission period; or

A transmission period or offset of one transmission opportunity where the PDCCH is repeatedly transmitted in each transmission period.

In this embodiment, taking the maximum number of times of configured PDCCH retransmission is K times as an example, one transmission opportunity of the retransmission configured by the network side device may be a timeslot where the kth transmission opportunity is located, and K is greater than or equal to 1 and less than or equal to K.

In this embodiment, the network side device configures one transmission opportunity of the repeated transmission as a time slot in which the first time slot or the second time slot is located.

Optionally, the network side device may further configure a transmission cycle or an offset of one transmission opportunity of PDCCH repeated transmission in each transmission cycle. For example, the network side device configures the first transmission opportunity for repeated transmission to occur at a certain period, for example, the period value is P slots (P is greater than or equal to 2 slots), and may also configure an offset of the occurrence of the first transmission opportunity. Therefore, the terminal can determine the timeslot number of the first transmission opportunity of the repeated transmission according to the configuration of the network side equipment.

For example, if the period value P of the transmission period of the configured first transmission opportunity is 2 slots, it may be determined that the slot resource occupied by the first transmission opportunity is as shown in fig. 3;

if the configured period value P of the transmission period of the first transmission opportunity is 4 slots, it can be determined that the slot resource occupied by the first transmission opportunity is as shown in fig. 4.

It should be noted that, in the following description,

in fig. 3 and 4 of the embodiment of the present invention, the mentioned "timing 1" indicates the first transmission timing of the repeated transmission, D indicates a downlink timeslot, and U indicates an uplink timeslot. Except for the time slots occupied by the transmission opportunity configured by the network side equipment, other unoccupied time slots may be uplink time slots or downlink time slots, and the terminal may determine the time slot number of another transmission opportunity (for example, the second time slot or the first time slot of the repeated transmission) according to a predefined rule.

In this embodiment, when the configuration information includes a time slot of one transmission opportunity of PDCCH repeated transmission in each transmission cycle, in step S220, determining time slots of at least two transmission opportunities of PDCCH repeated transmission according to the configuration information includes:

Taking the maximum number of repeated transmissions of the configured PDCCH as 2 times, and k is 1 as an example, that is, if the configuration information includes a time slot of a first transmission opportunity of PDCCH repeated transmission in each transmission cycle, determining the time slot of the first transmission opportunity as the time slot indicated in the configuration information, and determining the time slots of other transmission opportunities after the first transmission opportunity by using one of the following methods:

the time slot of other transmission opportunity is the time slot of the first transmission opportunity;

the time slot of the other transmission opportunity is the next available time slot after the time slot of the first transmission opportunity.

If the configuration information includes a time slot in which the last transmission opportunity of the PDCCH repeated transmission in each transmission period is located, determining that the time slot in which the last transmission opportunity is located is the time slot indicated in the configuration information, and determining the time slots in which other transmission opportunities before the last transmission opportunity are located by adopting one of the following modes:

the time slot of other transmission opportunity is the time slot of the last transmission opportunity;

the time slot of the other transmission opportunity is the last available time slot of the first transmission opportunity.

Specifically, if the network side device configures a time slot in which the first transmission opportunity of each transmission cycle of the repeated transmission is located, it may be determined that the time slot in which the second transmission opportunity is located is the time slot in which the first transmission opportunity is located, or is the next or next time slot of the time slot in which the first transmission opportunity is located, or is the next or next available time slot of N or next available time slots. I.e., if the next slot is not available, the determination of available slots may continue back in sequence until an available slot is encountered. By the mode, two transmission occasions of the PDCCH can be ensured, and the PDCCH repetition frequency is ensured to be 2.

When K is greater than 2, the configuration information includes a time slot in which a kth transmission opportunity repeatedly transmitted by the PDCCH is located in each transmission period, and K is greater than or equal to 1 and less than or equal to K, a manner of determining time slots in which other transmission opportunities besides the kth transmission opportunity are located may be referred to the above specific embodiments, and details are not described here.

In this embodiment of the present invention, optionally, if the configuration information includes a time slot in which a kth transmission opportunity repeatedly transmitted by the PDCCH is located in each transmission period, when the available time slot does not exist in the preset time window, the time slots in which other transmission opportunities are located are the time slots in which the kth transmission opportunity is located.

In another embodiment, optionally, when a time slot in which one transmission opportunity of PDCCH repeated transmission indicated by the configuration information is located is an unavailable time slot, it is determined that the one transmission opportunity indicated by the configuration information is transmitted on another transmission opportunity or on a time slot in which the other transmission opportunity is located.

For example, if the slot in which the kth transmission opportunity indicated by the configuration information is located is an unavailable slot, it is determined that the kth transmission opportunity transmits on another transmission opportunity or transmits on the slot in which another transmission opportunity is located. If k is 1, if the slot where the first transmission opportunity is located is an unavailable slot, the transmission can be performed on the slot where the second transmission opportunity is located. If there are no other available transmission occasions or available time slots within the preset time window, PDCCH repeat transmission may be performed in the time slot of the first transmission occasion, for example, each PDCCH uses a different monitoring occasion or monitoring opportunity (monitoring opportunity) of one SS set for transmission, or uses an unused SS set for transmission, or uses a space division multiplexing (sdm) manner of a Single Frequency Network (SFN) for transmission on the same transmission resource.

If the network device transmits DCI/PDCCH on two transmission opportunities in one slot (e.g., it is determined according to the second embodiment that two transmission opportunities are combined into the same slot), two different transmission resources (e.g., different CORESET, SS set, or PDCCH candidate candidates) may be determined for transmission by applying the configured transmission resources or the association of resources between repeated transmissions to the same slot. In the embodiment of the present invention, optionally, the terminal may determine the time slot of the other transmission opportunity according to the configuration of the time slot of the kth transmission opportunity in each repetition period configured by the network device and uplink (downlink DL) configuration high layer signaling (tdd-UL-DL-configuration common or tdd-UL-DL-configuration dedicate) configured by the network device, or determine the time slot of the other transmission opportunity according to a dynamic time slot format indication.

In an embodiment, when a network-side device does not configure DCI signaling (e.g., DCI format 2_0) related to a terminal monitoring Slot Format Indication (SFI), taking a maximum number of configured repeated transmissions of PDCCH as 2 and k as 1 as an example, the terminal first detects a next Slot of a Slot where a first transmission opportunity is located, and if the next Slot is indicated as an uplink Slot or a flexible Slot by a higher layer signaling (tdd-UL-DL-configuration common or tdd-UL-DL-configuration dedicate), the next Slot is not used for PDCCH repeated transmission; the terminal needs to determine the next time slot. Within a certain time window (for example, L time slots, L may be greater than or equal to a PDCCH repetition period, and may also be less than the PDCCH repetition period, and the PDCCH repetition period may be greater than or equal to 2 time slots) from the time slot of the first transmission opportunity, if a higher layer parameter (tdd-UL-DL-configuration common or tdd-UL-DL-configuration divided) indicates a downlink time slot, a first downlink time slot in the time window, or a first downlink time slot having an SS set to be monitored, or a first downlink time slot having the same PDCCH transmission resource as that of PDCCH transmission of the first transmission opportunity may be used for retransmission of the PDCCH.

According to the above principle, if the number of times of retransmission among the time slots of the terminal PDCCH configured by the network side device is greater than 2 times, the above manner may also be adopted to determine multiple downlink time slots within a preset time window, or multiple downlink time slots having SS sets to be monitored, or multiple downlink time slots having the same PDCCH transmission resource as that of the PDCCH transmission at the first transmission occasion for multiple PDCCH repeated transmission.

In one embodiment, when there is no downlink timeslot in the preset time window, the timeslot where the first transmission opportunity is located may be used for repeated transmission of two or more PDCCHs (i.e., the two or more transmission opportunities are all in the timeslot where the configured first transmission opportunity is located).

In the above, by taking the time slot in which the configuration information indicates the first transmission opportunity of PDCCH retransmission in one transmission cycle as an example, a way of determining the time slots of the transmission opportunities other than the first transmission opportunity in one PDCCH repetition cycle is described, and it should be noted that a way of determining the transmission opportunities other than the first transmission opportunity in all the repetition cycles may refer to the above-mentioned way, which is not illustrated herein.

If the network device sends Slot Format Indication (SFI) signaling, the DCIformat is 2_0, the method is similar, except that the slot indicated as downlink by the higher layer signaling tdd-UL-DL-configuration common or tdd-UL-DL-configuration dedicate can be used for PDCCH retransmission, the slot or symbol indicated as downlink by the SFI signaling is flexible, and the slot or symbol indicated as downlink by the SFI signaling can also be used for PDCCH retransmission. Taking the maximum number of repeated transmissions of the configured PDCCH as 2 and k as 1 as an embodiment, the time slot process for the terminal to determine the transmission time may be:

the terminal firstly detects the next time slot of the first transmission opportunity, and if the next time slot is indicated as an uplink time slot by a high-layer signaling tdd-UL-DL-configuration common or tdd-UL-DL-configuration dedicated, the next time slot is not used for PDCCH repeated transmission; the terminal needs to continue to make a decision on the next timeslot. Within a certain time window (for example, L time slots) from the time slot of the first transmission opportunity, if there is a higher layer parameter tdd-UL-DL-configuration common or tdd-UL-DL-configuration dedicate indicating a downlink time slot, or a higher layer parameter tdd-UL-DL-configuration common or tdd-UL-DL-configuration dedicate indicating a flexible time slot and indicated as a downlink time slot by SFI signaling, the first downlink time slot within the time window is either a first time slot with downlink symbols, or a first downlink time slot or symbols with SS sets to be monitored, or a first downlink time slot or symbols with the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity is used for repeated transmission of the PDCCH.

Similarly, if the network side device configures the terminal PDCCH time slot inter-repeat transmission times greater than 2, the method for the terminal to determine the time slots of other transmission occasions except the first transmission occasion may be: determining a plurality of downlink time slots in a period of time, or a plurality of downlink time slots with SS sets to be monitored, or a plurality of downlink time slots with the same PDCCH transmission resources as the PDCCH transmission of the first transmission opportunity are used for the transmission of a plurality of PDCCH repeated transmission versions. If there is no downlink time slot or symbol in the time window, the time slot in which the first transmission opportunity is located is used for repeated transmission of two or more PDCCHs, that is, the two or more transmission opportunities are all transmitted on the time slot in which the configured first transmission opportunity is located.

In addition, it can also be determined that the time slot of the second transmission opportunity is the time slot of the first transmission opportunity, that is, when the time slot of the second transmission opportunity cannot perform PDCCH transmission, one time slot is used to transmit two repeated PDCCH/DCI, and the inter-slot repeated transmission is converted into intra-slot repeated transmission.

Optionally, if the timeslot where the first transmission opportunity is located is an uplink timeslot (i.e., is not available), the PDCCH transmitted on the first transmission opportunity may also be transmitted on the second transmission opportunity.

And if the two transmission opportunities are unavailable or the configured time slot of the first transmission opportunity is unavailable, the PDCCH is not transmitted in the period of the two transmission opportunities configured by the network equipment.

If the repeated transmission times is more than 2, the terminal determines that the time slot of one transmission opportunity is the configured time slot, and the time slots of other transmission opportunities can be the configured time slot or the front K-1 or the rear K-1 available time slots of the configured time slot, wherein K is the repeated transmission times among the time slots.

If the network side device configures a time slot where the second transmission opportunity of the repeated transmission is located, the manner of determining the time slot where the first transmission opportunity is located may refer to the manner described above. The time slot in which the first transmission opportunity is located may be determined to be one or the previous or the N or the previous N available time slots on the time slot in which the second transmission opportunity is located or on the second transmission opportunity. I.e., if the previous slot was not available, forward progress continues until an available slot is encountered.

In this embodiment of the present invention, optionally, the available timeslots may be: a downlink timeslot, or a flexible timeslot configured by a higher layer signaling, or a downlink timeslot having an SS set to be monitored, or a downlink timeslot having a PDCCH transmission resource (CORESET and/or SS set and/or PDCCH candidate) index that is the same as that of a kth transmission timeslot (timeslot indicated in transmission configuration).

In addition, when the number of times of the repeated transmission between the time slots is 2, the time slot of the first transmission opportunity can be determined as the time slot of the second transmission opportunity, that is, when the time slot of the first transmission opportunity cannot carry out the PDCCH transmission, one time slot is used for transmitting two repeated PDCCH/DCI, and the repeated transmission between the time slots is converted into the repeated transmission in the time slot.

If the time slot in which the second transmission opportunity is located is an uplink time slot (i.e., is unavailable), the PDCCH transmitted on the second transmission opportunity may also be transmitted on the first transmission opportunity.

And if the two transmission opportunities are unavailable or the configured time slot of the second transmission opportunity is unavailable, the PDCCH is not transmitted in the period of the two transmission opportunities configured by the network equipment. I.e., if any one transmission opportunity collides with an unavailable slot or symbol, neither transmission opportunity is used for PDCCH repeat transmission.

Example two

time slots in which at least two transmission opportunities repeatedly transmitted by the PDCCH are respectively located within a preset time period; and/or

And transmitting resources of time slots in which at least two transmission opportunities repeatedly transmitted by the PDCCH are located within a preset time period.

In this embodiment, the terminal may determine that K transmission occasions occupy K consecutive available time slots according to the time slot and/or transmission resource in which at least two transmission occasions (for example, K) configured by the network side device are respectively located.

Optionally, the network side device may configure, for the terminal, a time slot occupied by repeated transmission in a preset time period and/or a PDCCH transmission resource of each time slot according to the uplink and downlink configuration and the available SS set. At this time, any one transmission timing of the repeated transmission may not occur at a certain period, as shown in fig. 5. The time slot where Rep is located may be used for repeated transmission, and the time slot where Non is located may not be used for repeated transmission, and the signaling format in the preset time period may be represented as "RRRNNNRRRNRR".

Optionally, the time slots Rep used for repeated transmission in this embodiment may be further distinguished, as shown in fig. 6, where the time slots Rep1 and Rep2 represent 2 transmission occasions of one repeated transmission, and the signaling format in the preset time period may be represented as "R1R 2R1NNNR2R1R2NR1R 2".

Still alternatively, as shown in fig. 7, slots or transmission occasions (RepB and RepB) having the same identification represent one time of inter-slot repeated transmission.

In this embodiment of the present invention, optionally, the PDCCH transmission resource may include at least one of the following:

a control resource set (CORESET);

SS set；

a PDCCH candidate resource.

In the embodiment of the present invention, optionally, the PDCCH transmission resource (CORESET and/or SS set and/or PDCCH candidate) used in each timeslot may also be configured together with the repeated transmission condition, and may also be configured at a certain periodicity. For example, taking fig. 6 as an example, the repeated transmission within the preset time period may be configured as: r1 SS set a, R2 SS set b, R1 SS set c, N, N, N, R2 SS set d, R1 SS set a, R2 SS set c, N, R1 SS set a, R2 SS set e. Or the retransmission opportunity and the PDCCH transmission resource are configured separately, for example, the transmission opportunity is configured as "R1R 2R1NNNR2R1R2NR1R 2", and the transmission resource is configured periodically, for example, an index, a period value and an offset of the SS set occupied by the retransmission within a preset time period are configured by using a higher layer parameter.

In the present invention, the preset time period may be several time slots, dozens of time slots, or dozens of time slots or more. Similar to the DCI format 2_0 being configured in the uplink and downlink of the indicator, the length of the indication time is variable, specifically, related to scheduling of the network side device.

In the embodiment of the present invention, the above configuration may be a higher layer signaling configuration, or may be a configuration performed through mac ce signaling or DCI signaling. For example, the network side device validates the configuration information some time after sending the configuration information. The length of the configuration information can also be changed and configured.

By adopting the method in the second embodiment, compared with the method in the first embodiment, the time slot, the transmission opportunity or the PDCCH transmission resource which can be used for repeated transmission and is configured by the network side device can be used, and the terminal only needs to transmit according to the configuration of the network side device.

EXAMPLE III

a first time slot of PDCCH repeated transmission within a preset time period; and/or

And the time slot of the first transmission opportunity of the PDCCH repeated transmission in the preset time period.

With the PDCCH transmission method according to the embodiment of the present invention, in step S220, determining time slots of at least two transmission occasions of PDCCH repeated transmission according to the configuration information includes:

Optionally, determining that every K consecutive available slots in the available slots are respectively used for transmitting K repeated transmissions of one PDCCH includes:

By adopting the embodiment, the terminal determines that the first time slot or the time slot of the first transmission opportunity is the configured time slot, and other transmission opportunities are respectively K-1 available time slots behind the configured time slot; in this way, the terminal determines that K transmission occasions of repeated transmission between each slot occupy K available slots.

Optionally, determining an available timeslot in a preset time period after a timeslot where the first timeslot or the first transmission opportunity is located includes:

In the PDCCH transmission method according to this embodiment, the network side device configures or indicates a first time slot or a time slot in which a transmission opportunity is located in a preset time period, and configures or indicates a time slot or a time slot in which a transmission opportunity is located in each period in a period of time differently from the first embodiment.

In the third embodiment, the time information of the first transmission opportunity may not appear in a periodic form. The configuration or indication information is validated for a period of time after receipt of the configuration or activation or indication information. Taking fig. 8 as an example, the network side device configures or indicates the time slot position where the first time slot is located, for transmitting DCI 1, and then the terminal may determine, according to the uplink and downlink configuration and/or the SS set configuration to be monitored, other time slots where the PDCCH time slots are repeatedly transmitted or time slots where other transmission opportunities are located.

By adopting the embodiment, if the network side device configures or indicates the first time slot or the time slot in which the first transmission opportunity is located within the preset time period, the terminal can determine the time slots in which all the transmission opportunities are located according to the following method:

first, the available time slots within a period of time after the first transmission opportunity are determined, and then every two available time slots are respectively used for two repeated transmissions for transmitting a DCI/PDCCH, that is, as shown in fig. 8, the first two time slots are used for transmitting DCI 1, the 3 rd and 7 th time slots are used for transmitting DCI 2, and the 8 th and 11 th time slots are used for transmitting DCI 3.

The method is also similar when the number of inter-slot repeated transmissions is greater than 2, e.g., K times. The terminal firstly determines available time slots within a period of time after the first transmission opportunity, and then within the available time slots including the time slot in which the first transmission opportunity is located, every K available time slots are respectively used for transmitting K repeated transmissions of one DCI/PDCCH, namely the terminal determines that every K transmission opportunities occupy K continuous available time slots.

In an embodiment of the invention, the K consecutive available time slots may be physically non-consecutive time slots, but may be consecutive from the point of view of the available slot numbers. To avoid confusion, the number of available time slots may also be defined, for example, the time slot configured or indicated by the network device is the first time slot, and the number of the following available time slots is 2, 3, 4, 5 … …, respectively.

Specifically, the terminal may determine the time slot information of other transmission occasions according to the relevant configuration information of the time slot in which the first transmission occasion of the multiple PDCCH repeated transmission within the preset time period configured by the network side device is located, and uplink UL (downlink DL) configuration high layer signaling tdd-UL-DL-configuration common or tdd-UL-DL-configuration determined or SFI indication configured by the network side device:

firstly, a terminal determines a time range (for example, several or more than ten time slots) of PDCCH repeated transmission according to relevant configuration information of a time slot in which a first transmission opportunity of repeated transmission for a plurality of times in a preset time period configured by network side equipment is located; and then determining the time slot or symbol which can be used for PDCCH repeated transmission in the time range of the repeated transmission and the occupied time slot of each repeated transmission according to the uplink and downlink configuration high layer signaling or SFI indication.

The configuration information related to the timeslot where the first transmission opportunity is located may include: in a time range (for example, several or more than ten time slots) for performing repeated transmission, a total number of repeated transmissions in the time range (for example, one repeated transmission needs to transmit two same DCI or PDCCH, and P such repeated transmissions are transmitted within a period of time, where P is a positive integer greater than or equal to 1), in which case, the terminal may determine P such repeated transmissions within the time range of repeated transmission according to uplink configuration higher layer signaling or SFI indication; the configuration information related to the time slot in which the first transmission opportunity is located may not include the total number of repeated transmissions, so that the terminal needs to determine the total number of repeated transmissions in the time range, that is, all time slots in the time range are used for PDCCH repeated transmissions, for example, the total number may be Q times.

The specific process of determining the time slot which can be used for PDCCH repeated transmission and the time slot occupied by each repeated transmission within the time range of the repeated transmission according to the uplink and downlink configuration high layer signaling or SFI indication is as follows:

the terminal determines the time slots or symbols which can be used for PDCCH retransmission in the time range according to uplink and downlink configuration high layer signaling or SFI indication, and if the network device is not configured with the terminal to monitor the SFI indication related DCI signaling (such as DCI format 2_0), the terminal determines which time slots can be used for PDCCH retransmission only according to the high layer signaling tdd-UL-DL-configuration common or tdd-UL-DL-configuration determined, for example, the time slot in which the high layer signaling indicates downlink or the flexible time slot can be used for PDCCH retransmission, and for example, the time slot in which the high layer signaling indicates uplink or the flexible time slot cannot be used for PDCCH retransmission. Whether a flexible slot can be used for PDCCH repeat transmission depends on the configuration of the network side device or predefined rules. Or the network side device is configured as a downlink time slot and has a time slot of the SS set to be monitored, or the downlink time slot having the same PDCCH transmission resource as the PDCCH transmission of the first transmission occasion may be used for repeated transmission of the PDCCH.

If the network side device configures the terminal to monitor the DCI signaling (DCI format 2_0) related to the SFI indication, in addition to the downlink time slot determined by the higher layer signaling, the time slot configured as a flexible time slot by the higher layer signaling tdd-UL-DL-configuration common or tdd-UL-DL-configuration dedicate may also be used for PDCCH retransmission, specifically, if the flexible symbol is further indicated by the SFI indication related DCI signaling (DCI format 2_0) as a time slot containing a downlink symbol, or as a time slot containing a downlink symbol and having an SS set to be monitored, or as a time slot containing a downlink symbol and having the same PDCCH transmission resource as that of the PDCCH transmission of the first transmission opportunity may also be used for PDCCH retransmission. The terminal may then determine the time slot occupied by each retransmission, for example, 2 or more time slots of the available time slots determined in the previous step, according to the number of repetitions of each retransmission (e.g., configured or predefined number of times by the network device, 2 or more times, for example, K times) (fig. 8 takes 2 repetitions as an example, where

time slots

1, 2, 3, 7, 8, 11 may be used for PDCCH retransmission, and the number of repetitions is 2, the terminal may determine the first and second time slots for PDCCH retransmission, the 3 rd and 7 th time slots for PDCCH retransmission, and the 8 th and 11 th time slots for PDCCH retransmission). There may also be a certain interval between two repeated transmissions, for example, M slots or symbols, and there may also be a certain interval between every two total repeated transmissions, for example, N slots or symbols, which may be specifically determined by the network side device side or according to a predefined rule.

In the PDCCH transmission method according to the foregoing embodiment of the present invention, when the PDCCH transmission method is applied to the first to third embodiments, the determined available time slots that can be used for PDCCH repeated transmission are: at least one of a downlink time slot, a flexible time slot configured by a higher layer signaling and a downlink time slot with an SS set to be monitored.

The unavailable time slot may be: one of the uplink time slot, the flexible time slot configured by the high-layer signaling, the uplink time slot or the flexible time slot dynamically indicated by the DCI format, and the like. When the DCI format dynamically indicates a flexible timeslot, it is necessary to further monitor other conditions, such as determining whether the timeslot includes uplink and downlink symbols, to determine whether the timeslot can be used as an available timeslot.

In the first to third embodiments, for the flexible timeslot configured by the higher layer signaling, if the terminal is configured to monitor the DCI format (that is, configured to dynamically indicate the uplink and downlink timeslots), if the flexible timeslot configured by the higher layer signaling is dynamically indicated as the uplink timeslot by the DCI format, the flexible timeslot also cannot be used as any transmission opportunity for PDCCH repeated transmission.

By adopting the method of the embodiment of the invention, the terminal can determine the time slot used by the PDCCH repeated transmission, the repeated transmission times can be 2 times, and meanwhile, the network equipment can also send the corresponding DCI/PDCCH at the PDCCH repeated transmission opportunity determined by the terminal, thereby ensuring the transmission reliability of the DCI/PDCCH.

In the present invention, the available time slot can also be extended to available symbols/monitoring opportunities, etc.; similarly, the unavailable time slot may also be extended to an unavailable symbol/monitoring opportunity, etc. For example, if a certain timeslot is a flexible timeslot configured by RRC signaling and is dynamically indicated by the DCI format to include both a downlink symbol and an uplink symbol, the method in this embodiment may also be extended to determine resources such as a timeslot or a symbol where a transmission opportunity is located according to available symbols.

In step S210, the PDCCH transmission method according to the embodiment of the present invention further includes at least one of the following configuration information sent by the network side device:

a transmission resource configured by a network side device;

a transmission resource for PDCCH repetition transmission;

Optionally, the transmission resource configured by the network side device or the transmission resource used for PDCCH repeated transmission in the configuration information includes one or two transmission resources, and the transmission resource may be a resource to be monitored or may not be a resource to be monitored.

Optionally, the configuration information may further indicate whether transmission resources of at least two transmission occasions are the same, for example, may indicate that the transmission resource of the first transmission occasion is the same as the transmission resource of the second transmission occasion.

That is, optionally, the transmission resource configured by the network side device further includes at least one of the following:

Optionally, the transmission resource configured by the network side device includes at least one of:

With the PDCCH transmission method according to the embodiment of the present invention, in step S220, according to the configuration information, it is determined that the transmission resource of the time slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of the following:

The following describes a manner in which a terminal determines a transmission resource for PDCCH retransmission with reference to first to third embodiments of the present invention.

For example, when applied to the second embodiment, the terminal may determine a time slot for repeated transmission of the DCI/PDCCH, and with this embodiment, the terminal may further determine a transmission resource (e.g., a CORESET, an SS set, and/or a PDCCH candidate index) of the DCI/PDCCH in one time slot.

Optionally, the network side device may configure the same or different transmission resources for two time slots of PDCCH repeated transmission, or configure the transmission resources for only one transmission occasion, and the transmission resources of another transmission occasion are determined according to a predefined rule.

If the network device side configures transmission resources for both transmission occasions, after the terminal determines the time slot used for transmission, the transmission resource corresponding to each time slot can be determined. If the corresponding transmission resource in the time slot in which transmission is performed is not in the state to be monitored (i.e. the time slot is determined not to be in the state to be monitored according to the period and offset value in the associated high-level parameter searchspace, for example, both the PDCCH candidate resource and the CORESET have SS sets associated therewith), it is still determined that the network side device has sent the DCI/PDCCH in the time slot, and the used transmission resource is a resource configured by the network side device, that is, even if the transmission resource is not in the state to be monitored configured by the searchspace, PDCCH transmission can be performed, that is, the terminal determines that the PDCCH transmission resource is a transmission resource configured by two transmission opportunities.

If the network device configures the transmission resource of one transmission opportunity and the association relationship (link relationship, i.e. relationship between transmission resources) between two repeated transmissions, the terminal may also determine the transmission resource of another transmission opportunity accordingly. Similarly, even if the determined transmission resource is not in the state to be monitored configured by searchspace, PDCCH transmission can be performed.

If the network device transmits DCI/PDCCH on two transmission opportunities in one slot (e.g., it is determined according to the second embodiment that two transmission opportunities are combined into the same slot), two different transmission resources (e.g., different CORESET, SS set, or PDCCH candidate candidates) may be determined for transmission by applying the configured transmission resources or the association of resources between repeated transmissions to the same slot.

The network side device may further configure a CORESET, an SS set, and/or a PDCCH candidate index for repeated transmission, that is, repeated transmission is only performed in resources for repeated transmission, so that the terminal may determine, after determining a timeslot where the repeated transmission is performed, a transmission resource as a corresponding resource for performing the repeated transmission.

The network side device may also configure a PDCCH transmission method, for example, the time slots are repeatedly transmitted and different time slots have the same PDCCH transmission resource and corresponding transmission resource, so that the terminal may also determine the transmission resources of two transmission opportunities. In this case, the terminal does not expect two transmission opportunities in the same time slot, or the terminal may abandon one time of repeated transmission (for example, abandon transmission configured on an unavailable time slot or symbol), or the terminal determines that the Network device side performs PDCCH repeated transmission using space division multiplexing, for example, space division multiplexing based on a Single Frequency Network (SFN), that is, two repeated transmissions occupy the same time-Frequency resource and are transmitted by different transmission points.

Optionally, in the PDCCH transmission method according to the embodiment of the present invention, when the transmission configuration includes a time slot in which a transmission opportunity of PDCCH repeated transmission in each transmission cycle is located, the method further includes:

the transmission indication information includes at least one of:

With this embodiment, after configuring the time slot and transmission resource used by one or two transmission opportunities, the network side device may further use dynamic signaling (the transmission indication information) to indicate the transmission condition of the second or another or other transmission opportunity, for example, may indicate that the terminal abandons (i.e., does not transmit) the second transmission opportunity, or defers transmission, and so on. The dynamic signaling (transmission indication information) may be indicated to the terminal using a separate information field, or may be indicated together with a common beam (TCI status) indication field, that is, using a joint coding method.

An embodiment of the present invention further provides a PDCCH transmission method, which is applied to a network device, and as shown in fig. 9, the method includes:

s910, sending configuration information for inter-slot PDCCH repeated transmission to a terminal;

s920, according to the configuration information, determining time slots of at least two transmission occasions of PDCCH repeated transmission and transmission resources of the time slot of each transmission occasion;

and S930, performing transmission of the PDCCH on the time slot where the determined at least two transmission occasions are located by adopting the transmission resources corresponding to the time slot where the at least two transmission occasions are located.

By adopting the PDCCH transmission method in this embodiment, the network side device sends configuration information for inter-slot PDCCH retransmission to the terminal, so that the terminal can determine the time slots of at least two transmission occasions of PDCCH retransmission and the transmission resource of the time slot of each transmission occasion according to the configuration information, and monitors the transmission of the PDCCH by using the transmission resource corresponding to the time slot, so as to be suitable for the situation that when the network device configures the terminal to perform inter-slot PDCCH retransmission, the number of times of retransmission is greater than 1 (the number of transmission occasions is greater than 1) or configured K times of repetition (the corresponding number of times of repetition is greater than 2), and ensure the reliability of PDCCH transmission.

time slots in which at least two transmission occasions of PDCCH repeated transmission in a preset time period are respectively positioned;

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time range;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, the PDCCH transmission method includes:

transmitting indication information indicated by dynamic signaling;

the transmission indication information includes at least one of:

An embodiment of the present invention further provides a terminal, as shown in fig. 10, including: a transceiver 1010, a memory 1020, a processor 1030, and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

the transceiver 1010 is configured to receive configuration information for inter-slot PDCCH repeated transmission sent by a network side device;

the processor 1030 is configured to read a program in the memory and execute the following processes;

Optionally, in the terminal, the configuration information includes a signaling used for indicating inter-slot retransmission of the PDCCH and/or a transmission configuration used for PDCCH retransmission.

the transmission resources of time slots of at least two transmission occasions of PDCCH repeated transmission within a preset time period;

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

Optionally, the terminal, wherein,

Optionally, the terminal, wherein the processor 1030 is further configured to: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

Optionally, in the terminal, the determining, by the processor 1030, an available timeslot in a preset time period after a timeslot where the first timeslot or the first transmission opportunity is located includes:

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, the terminal, where, when the network side device does not configure a DCI signaling indicating SFI indication in a terminal monitoring time slot format, the available time slot is a downlink time slot indicated by a higher layer signaling in a preset time period, a time slot indicated by the higher layer signaling is flexible and preconfigured as a time slot capable of being used for PDCCH transmission, a downlink time slot having SS sets to be monitored, or a downlink time slot having the same PDCCH transmission resource for PDCCH transmission of a time slot indicated by the transmission configuration or a time slot in which a transmission opportunity is located;

Optionally, in the terminal, the determining, by the processor 1030, that every K consecutive available slots in the available slots are respectively used for K repeated transmissions of one PDCCH includes:

Optionally, in the terminal, the processor 1030 determines, according to the configuration information, that the transmission resource of the time slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of:

Optionally, the terminal, wherein the processor 1030 is further configured to:

the transmission indication information includes at least one of:

In the terminal according to the embodiment of the present invention, the transceiver 1010 is configured to receive and transmit data under the control of the processor 1030.

Wherein in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1030, and various circuits, represented by memory 1020, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1010 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. For different user devices, user interface 1040 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1030 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1030 in performing operations.

Alternatively, the processor 1030 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also have a multi-core architecture.

The processor is used for executing any method provided by the embodiment of the invention according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

An embodiment of the present invention further provides a network side device, as shown in fig. 11, including: a transceiver 1110, a memory 1120, a processor 1130, and a computer program stored on the memory and executable on the processor; wherein the content of the first and second substances,

the transceiver 1110 is configured to send configuration information for inter-slot PDCCH repeated transmission to a terminal;

the processor 1130 is configured to determine, according to the configuration information, time slots of at least two transmission occasions in which the PDCCH is repeatedly transmitted and transmission resources of a time slot in which each transmission occasion is located;

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

Optionally, the network side device, wherein the transmission resource includes at least one of a control resource set, CORESET, a search space set, SS set, and a PDCCH candidate resource.

Optionally, the network-side device, wherein the processor 1130 is further configured to: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

Optionally, in the network side device, when the configuration information includes a first time slot of the PDCCH repeated transmission in a preset time period, or includes a time slot of a first transmission opportunity of the PDCCH repeated transmission in the preset time period, the determining, by the processor according to the configuration information, time slots of at least two transmission opportunities of the PDCCH repeated transmission includes:

Optionally, in the network-side device, the determining, by the processor 1130, an available timeslot in a preset time period after a timeslot where the first timeslot or the first transmission opportunity is located includes:

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

a time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, in the network-side device, where the processor 1130 determines that every K consecutive available slots in the available slots are respectively used for K repeated transmissions of transmitting one PDCCH, the method includes:

Optionally, in the network side device, the processor 1130 determines, according to the configuration information, that the transmission resource of the time slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of:

Optionally, the network-side device, wherein the processor 1130 is further configured to:

transmitting indication information indicated by dynamic signaling;

the transmission indication information includes at least one of:

Optionally, in the network side device, the configuration information is indicated by at least one of a high layer signaling, a MAC CE signaling of a MAC control layer, and a DCI signaling.

In the network side device according to the embodiment of the present invention, the transceiver 1110 is configured to receive and transmit data under the control of the processor 1130.

In FIG. 11, among other things, the bus architecture may include any number of interconnected buses and bridges with one or more processors, represented by the processor 1130, and various circuits, represented by the memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1110 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 1130 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1130 in performing operations.

The processor 1130 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

An embodiment of the present invention further provides a PDCCH transmitting apparatus, applied to a terminal, and as shown in fig. 12, the apparatus includes:

an information receiving unit 1210, configured to receive configuration information for inter-slot PDCCH repeated transmission sent by a network side device;

a first processing unit 1220, configured to determine, according to the configuration information, time slots of at least two transmission occasions for PDCCH repeated transmission and a transmission resource of a time slot in which each transmission occasion is located;

a monitoring unit 1230, configured to monitor transmission of the PDCCH by using the transmission resource corresponding to the time slot where the at least two determined transmission opportunities are located.

Optionally, the PDCCH transmission apparatus, wherein the configuration information includes signaling for indicating PDCCH inter-slot retransmission and/or transmission configuration for PDCCH retransmission.

Optionally, the PDCCH transmission apparatus, wherein the transmission configuration includes at least one of:

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

Optionally, the PDCCH transmission apparatus, wherein the transmission resource includes at least one of a control resource set, CORESET, a search space set, SS set, and a PDCCH candidate resource.

Optionally, in the PDCCH transmission apparatus, when the configuration information includes a time slot of one transmission opportunity of PDCCH repeated transmission in each transmission cycle, the determining, by the first processing unit 1220, the time slots of at least two transmission opportunities of PDCCH repeated transmission according to the configuration information includes:

the time slot of other transmission opportunities is the time slot of the kth transmission opportunity;

Optionally, the PDCCH transmitting apparatus, wherein,

Optionally, in the PDCCH transmission apparatus, the first processing unit 1220 is further configured to: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

Optionally, in the PDCCH transmission apparatus, when the configuration information includes a first time slot of PDCCH retransmission in a preset time period, or includes a time slot of a first transmission occasion of PDCCH retransmission in the preset time period, the determining, by the first processing unit 1220, the time slots of at least two transmission occasions of PDCCH retransmission according to the configuration information includes:

Optionally, in the PDCCH transmitting apparatus, the determining, by the first processing unit 1220, an available time slot within a preset time period after a time slot of a first time slot or a first transmission opportunity includes:

Optionally, the PDCCH transmitting apparatus, wherein the configuration information about the time slot in which the first time slot or the first transmission opportunity is located includes at least one of the following:

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, in the PDCCH transmission apparatus, in a case that the network side device does not configure a DCI signaling indicating SFI indication by a terminal monitoring slot format indication, the available time slot is a downlink time slot indicated by a higher layer signaling in a preset time period, a time slot indicated by the higher layer signaling is flexible and preconfigured to be capable of being used for PDCCH transmission, a downlink time slot having an SS set to be monitored, or a downlink time slot having the same PDCCH transmission resource for PDCCH transmission of a time slot indicated by the transmission configuration or a time slot in which a transmission opportunity is located;

under the condition that the network side equipment configures terminal SFI to indicate DCI signaling, the available time slot is a downlink time slot indicated by a high-level signaling in a preset time period, a time slot which is indicated by the high-level signaling and is flexible and preset to be used for PDCCH transmission, a time slot which is indicated by the high-level signaling as a flexible time slot and is indicated by the SFI to be provided with a downlink symbol, a downlink time slot provided with an SS set to be monitored, or a downlink time slot which is used for PDCCH transmission and provided with the same PDCCH transmission resource for the time slot indicated by the transmission configuration or the time slot of the transmission opportunity.

Optionally, the PDCCH transmitting apparatus, wherein the determining, by the first processing unit 1220, that every K consecutive available slots in the available slots are respectively used for transmitting K repeated transmissions of one PDCCH includes:

Optionally, the PDCCH transmitting apparatus, wherein the transmission resource configured by the network side device includes at least one of:

Optionally, the PDCCH transmission apparatus, wherein the transmission resource configured by the network side device further includes at least one of the following:

Optionally, in the PDCCH transmission apparatus, the first processing unit 1220 determines, according to the configuration information, that the transmission resource of the time slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of:

Optionally, in the PDCCH transmission apparatus, the first processing unit 1220 is further configured to:

Optionally, in the PDCCH transmitting apparatus, when the transmission configuration includes a time slot of one transmission opportunity of PDCCH repeated transmission in each transmission period, the information receiving unit 1210 is further configured to:

the transmission indication information includes at least one of:

Optionally, in the PDCCH transmission apparatus, the configuration information is indicated by at least one of a high layer signaling, a MAC CE signaling, and a DCI signaling.

An embodiment of the present invention further provides a PDCCH transmitting apparatus, which is applied to a network device, as shown in fig. 13, and the apparatus includes:

an information transmitting unit 1310 configured to transmit configuration information for inter-slot PDCCH repeated transmission to a terminal;

a second processing unit 1320, configured to determine, according to the configuration information, time slots of at least two transmission occasions in which the PDCCH is repeatedly transmitted and a transmission resource of a time slot in which each transmission occasion is located;

a transmitting unit 1330, configured to perform PDCCH transmission on the time slots where the at least two determined transmission occasions are located by using the transmission resources corresponding to the time slots where the at least two determined transmission occasions are located.

Optionally, the PDCCH transmission apparatus, wherein the configuration information includes a signaling used for indicating PDCCH inter-slot retransmission and/or a transmission configuration used for PDCCH retransmission.

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

Optionally, in the PDCCH transmission apparatus, when the configuration information includes a time slot of one transmission opportunity of PDCCH repeated transmission in each transmission period, the determining, by the second processing unit 1320, the time slots of at least two transmission opportunities of PDCCH repeated transmission according to the configuration information includes:

Optionally, in the PDCCH transmitting apparatus, if the configuration information includes a time slot in which a kth transmission opportunity of PDCCH repeated transmission in each transmission period is located, when the available time slot does not exist in the preset time window, the time slots in which other transmission opportunities are located are the time slot in which the kth transmission opportunity is located.

Optionally, in the PDCCH transmission apparatus, the second processing unit 1320 is further configured to: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

Optionally, in the PDCCH transmission apparatus, when the configuration information includes a first time slot of PDCCH repeated transmission in a preset time period, or includes a time slot of a first transmission opportunity of PDCCH repeated transmission in a preset time period, the second processing unit 1320 determines, according to the configuration information, time slots of at least two transmission opportunities of PDCCH repeated transmission, including:

Optionally, in the PDCCH transmitting apparatus, the determining, by the second processing unit 1320, an available time slot within a preset time period after the time slot of the first time slot or the first transmission opportunity includes:

a time range for performing the repetitive transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

Optionally, the PDCCH transmitting apparatus, wherein the second processing unit 1320 determines that, in the available time slots, every K consecutive available time slots are respectively used for transmitting K repeated transmissions of one PDCCH, and includes:

Optionally, the PDCCH transmitting apparatus, wherein the transmission resource configured by the network side device further includes at least one of the following:

Optionally, in the PDCCH transmission apparatus, the second processing unit 1320 determines, according to the configuration information, that the transmission resource of the time slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of:

Optionally, in the PDCCH transmission apparatus, the second processing unit 1320 is further configured to:

Optionally, in the PDCCH transmitting apparatus, when the transmission configuration includes a time slot of a transmission opportunity of PDCCH repeated transmission in each transmission period, the information sending unit 1310 is further configured to:

transmitting indication information indicated by dynamic signaling;

the transmission indication information includes at least one of:

Optionally, the PDCCH transmitting apparatus, wherein the configuration information is indicated by at least one of a higher layer signaling, a MAC CE signaling, and a DCI signaling.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

An embodiment of the present invention further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program for causing the processor to execute the PDCCH transmission method according to any one of the above embodiments. The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NANDFLASHs), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A PDCCH transmission method is applied to a terminal, and is characterized by comprising the following steps:

2. The PDCCH transmission method according to claim 1, wherein the configuration information comprises signaling indicating PDCCH inter-slot repeat transmission and/or transmission configuration for PDCCH repeat transmission.

3. The PDCCH transmission method according to claim 2, wherein said transmission configuration includes at least one of:

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

4. The PDCCH transmission method according to claim 3, wherein the transmission resource comprises at least one of a control resource set (CORESET), a search space set (SS set), and a PDCCH candidate resource.

5. The method according to claim 3, wherein when the configuration information includes a slot in which one transmission opportunity of PDCCH retransmission is located in each transmission cycle, determining the slots of at least two transmission opportunities of PDCCH retransmission according to the configuration information comprises:

6. The PDCCH transmission method according to claim 5,

7. The PDCCH transmission method according to claim 5, wherein the method further comprises: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

8. The PDCCH transmission method according to claim 3, wherein the configuration information includes a first slot of PDCCH retransmission within a preset time period, or determines slots of at least two transmission occasions of PDCCH retransmission according to the configuration information when the first slot of the PDCCH retransmission within the preset time period is included, and the method includes:

9. The PDCCH transmission method according to claim 8, wherein determining an available time slot within a preset time period after a time slot of a first time slot or a first transmission opportunity comprises:

10. The PDCCH transmission method according to claim 9, wherein the configuration information related to the first slot or the slot where the first transmission opportunity is located includes at least one of:

a time range for performing a repeat transmission;

a total number of repeated transmissions within the time frame;

the time slot or symbol interval between each transmission opportunity;

the time slot or symbol interval between each repeated transmission.

11. The PDCCH transmission method according to any one of claims 5 to 9, wherein, when the network side device does not configure the SFI indication DCI signaling, the available time slot is a downlink time slot indicated by a higher layer signaling in a preset time period, a flexible time slot indicated by the higher layer signaling and preconfigured to be capable of being used for PDCCH transmission, a downlink time slot having SS sets to be monitored, or a downlink time slot having the same PDCCH transmission resources for PDCCH transmission of a time slot indicated by the transmission configuration or a time slot in which a transmission opportunity is located;

12. The method according to claim 8, wherein determining K repeated transmissions of one PDCCH in every K consecutive available slots comprises:

13. The PDCCH transmission method according to claim 3, wherein the transmission resources configured by the network side device include at least one of:

14. The PDCCH transmission method according to claim 13, wherein the transmission resource configured by the network side device further includes at least one of:

15. The PDCCH transmission method according to claim 13, wherein determining, according to the configuration information, transmission resources of a slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of:

16. The PDCCH transmission method according to claim 15, characterised in that said method further comprises:

17. The PDCCH transmission method according to claim 3, wherein when the transmission configuration includes a time slot in which one transmission opportunity of PDCCH repeated transmission exists in each transmission period, the method further comprises:

the transmission indication information includes at least one of:

18. The PDCCH transmission method according to claim 1, wherein said configuration information is indicated by at least one of higher layer signaling, medium access control layer control element, MAC CE, signaling and downlink control information, DCI, signaling.

19. A PDCCH transmission method is applied to network side equipment, and is characterized by comprising the following steps:

20. The PDCCH transmission method according to claim 19, wherein said configuration information comprises signaling indicating PDCCH inter-slot repeat transmission and/or transmission configuration for PDCCH repeat transmission.

21. The PDCCH transmission method according to claim 20, wherein said transmission configuration includes at least one of:

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

22. The PDCCH transmission method according to claim 21, wherein when the configuration information includes a time slot of one transmission opportunity of PDCCH retransmission in each transmission period, determining time slots of at least two transmission opportunities of PDCCH retransmission according to the configuration information includes:

the time slot of other transmission opportunities is the last time slot or the next time slot of the kth transmission opportunity;

23. The PDCCH transmission method according to claim 22, wherein if the configuration information includes a slot in which a kth transmission opportunity of PDCCH repeated transmission in each transmission period is located, and when the available slot does not exist in a preset time window, the slots in which other transmission opportunities are located are the slots in which the kth transmission opportunity is located.

24. The PDCCH transmission method according to claim 22, characterised in that said method further comprises: and when the time slot of one transmission opportunity of the PDCCH repeated transmission indicated by the configuration information is an unavailable time slot, determining that one transmission opportunity indicated by the configuration information is transmitted on other transmission opportunities or transmitted on the time slot of other transmission opportunities.

25. The PDCCH transmission method according to claim 21, wherein the configuration information includes a first slot of PDCCH retransmission within a preset time period, or determines slots of at least two transmission occasions of PDCCH retransmission according to the configuration information when the first slot of the PDCCH retransmission within the preset time period is included, and the method includes:

26. The PDCCH transmission method according to claim 25, wherein determining an available time slot within a preset time period after a time slot of a first time slot or a first transmission opportunity comprises:

27. The PDCCH transmission method according to claim 25, wherein determining that every K consecutive available slots of said available slots are respectively used for K repeated transmissions for transmitting a PDCCH comprises:

28. The PDCCH transmission method according to claim 21, wherein the transmission resource configured by the network side device includes at least one of:

29. The PDCCH transmission method according to claim 28, wherein the transmission resource configured by the network side device further includes at least one of:

30. The PDCCH transmission method according to claim 28, wherein determining, according to the configuration information, transmission resources of a slot in which each transmission opportunity of PDCCH repeated transmission is located includes at least one of:

31. The PDCCH transmission method according to claim 30, characterised in that said method further comprises:

32. The PDCCH transmission method according to claim 21, wherein when the transmission configuration includes a time slot in which one transmission opportunity of PDCCH repeated transmission is located in each transmission cycle, the method further comprises:

transmitting indication information indicated by dynamic signaling;

the transmission indication information includes at least one of:

33. A terminal, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

34. The terminal of claim 33, wherein the configuration information comprises signaling indicating PDCCH inter-slot repeat transmission and/or transmission configuration for PDCCH repeat transmission.

35. The terminal of claim 34, wherein the transmission configuration comprises at least one of:

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

36. A network-side device, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

37. The network side device of claim 36, wherein the configuration information comprises signaling indicating PDCCH inter-slot repeat transmission and/or transmission configuration for PDCCH repeat transmission.

38. The network-side device of claim 37, wherein the transmission configuration comprises at least one of:

a first time slot of PDCCH repeated transmission within a preset time period;

a transmission resource configured by the network side equipment;

a transmission resource for PDCCH repetition transmission;

39. A PDCCH transmission device is applied to a terminal, and the device comprises:

40. A PDCCH transmission device is applied to a network side device, and the device comprises:

41. A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program for causing the processor to perform the PDCCH transmission method of any of claims 1-18 or the PDCCH transmission method of any of claims 19-32.