CN114826477B - Control channel monitoring method, device and storage medium - Google Patents

Abstract

The embodiment of the application provides a control channel monitoring method, a device and a storage medium, wherein the method comprises the following steps: receiving configuration information sent by network side equipment, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission; and determining the range of the candidate PDCCH to be monitored based on the association relationship. The embodiment of the application reduces the complexity of PDCCH blind detection.

Description

Control channel monitoring method, device and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and apparatus for monitoring a control channel, and a storage medium.

Background

In existing New Radio (NR) systems, downlink control information (downlink control information, DCI) is not transmitted in a repeated manner, i.e., one DCI is transmitted in only one downlink control channel in one scheduling unit. The protocol specifies the maximum number of physical downlink control channel (physical downlink control channel, PDCCH) candidates that can be monitored per slot per subcarrier spacing configuration. The number of candidates PDCCH (PDCCH candidate) to be placed on the network device side may be larger than a predetermined maximum value, but the maximum number of PDCCH detections performed by the terminal is the predetermined maximum number.

In order to improve the transmission reliability of the downlink control channel, multiple transmission points (transmission point, TRP) may use different transmission configuration instructions (transmission configuration indication, TCI) states (i.e. beams) to send the same PDCCH to the terminal, and after receiving the PDCCHs sent by the multiple transmission points, the terminal may perform maximum ratio combining on the multiple PDCCHs, and then perform demodulation decoding operation, so that the transmission reliability of the PDCCH is significantly improved compared with the case that the PDCCH is sent by only a single transmission point.

However, according to the existing protocol, the number of PDCCH candidates that can be blindly detected in a slot at most is limited, and if any 2 or more PDCCH candidates are possible to transmit the same DCI, the complexity will be significantly increased by the terminal performing operations such as combining and decoding any 2 or more PDCCH candidates. In addition, since the terminal blind detection capability is limited, the terminal may not determine a correct combination of PDCCH candidates (i.e., a plurality of PDCCH candidate combinations transmitting the same control information) when the upper limit of the blind detection times is reached, and thus cannot solve the correct control information.

Disclosure of Invention

The embodiment of the application provides a control channel monitoring method, a control channel monitoring device and a storage medium, which are used for solving the problem of higher complexity of the conventional PDCCH blind detection.

In a first aspect, an embodiment of the present application provides a control channel monitoring method, including:

receiving configuration information sent by network side equipment, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

and determining the range of the candidate PDCCH to be monitored based on the association relationship.

In a second aspect, an embodiment of the present application provides a control channel monitoring method, including:

and sending configuration information to the terminal, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission.

In a third aspect, embodiments of the present application provide a terminal, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving configuration information sent by network side equipment, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

And determining the range of the candidate PDCCH to be monitored based on the association relationship.

In a fourth aspect, an embodiment of the present application provides a network side device, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

and sending configuration information to the terminal, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission.

In a fifth aspect, an embodiment of the present application provides a control channel monitoring apparatus, including:

a receiving module, configured to receive configuration information sent by a network side device, where the configuration information is configured with an association relationship between transmission resources of at least two candidate physical downlink control channels PDCCHs, where the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

and the determining module is used for determining the range of the candidate PDCCH to be monitored based on the association relation.

In a sixth aspect, an embodiment of the present application provides a control channel monitoring apparatus, including:

A sending module, configured to send configuration information to a terminal, where the configuration information is configured with an association relationship between transmission resources of at least two candidate physical downlink control channels PDCCHs, where the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission.

In a seventh aspect, embodiments of the present application provide a processor-readable storage medium storing a computer program for causing a processor to perform the method of the first or second aspect.

According to the control channel monitoring method, the device and the storage medium, the terminal obtains the association relation of the transmission resources of the at least two candidate PDCCHs through the configuration information, the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission, and the transmission resources of the at least two candidate PDCCHs used for PDCCH repeated transmission are associated based on the association relation, so that the terminal can determine the range of the candidate PDCCH to be monitored, namely the PDCCH of repeated transmission, based on the association relation, thereby reducing the monitoring range of PDCCH or DCI signaling, further reducing the times and complexity of blind detection, and solving the problem of higher complexity of PDCCH blind detection in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of steps of a control channel monitoring method applied to a terminal in an embodiment of the present application;

fig. 2 is a flowchart of steps of a control channel monitoring method applied to a network side device in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a terminal in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a network side device in an embodiment of the present application;

fig. 5 is a block diagram of a control channel monitoring device applied to a terminal in an embodiment of the present application;

fig. 6 is a block diagram of a control channel monitoring apparatus applied to a network side device in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited. Since the terminal device forms a communication-capable network together with other network devices, such as core network devices, access network devices (i.e. base stations), the terminal device is also regarded as a network device in the present invention.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (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 embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Furthermore, it is to be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The present application is specifically described below.

As shown in fig. 1, a flowchart of steps of a control channel monitoring method applied to a terminal in an embodiment of the present application is shown, where the method includes the following steps:

step 101: and receiving configuration information sent by the network side equipment.

The configuration information is configured with an association relation between transmission resources of at least two candidate PDCCHs, and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission.

Here, it should be noted that at least two candidate PDCCHs are used to carry the same control information, or a repetition version of PDCCH or a repetition version of DCI signaling, or two transmission opportunities as one control signaling. The PDCCH repetition version or the repetition version of the DCI signaling may be the same DCI signaling, or may be DCI signaling with two or more individual information domains or different DCI formats (formats), or may be two or more DCI signaling for scheduling the same PDSCH/PUSCH or for the same purpose (e.g. triggering CSI reporting, indicating a slot format, indicating a power control parameter, etc.). Similarly, PDCCH retransmission may be the same DCI signaling retransmission, or may be the retransmission of two or more DCI signaling with different individual information fields or different DCI formats, or may be the retransmission of two or more DCI signaling for scheduling the same PDSCH/PUSCH or for the same purpose (e.g. triggering CSI reporting, indicating a slot format, indicating a power control parameter, etc.).

Specifically, by configuring the association relation between the transmission resources of at least two candidate PDCCHs in the configuration information, and using the transmission resources of at least two candidate PDCCHs for PDCCH repeated transmission, the method realizes that the transmission resources of at least two candidate PDCCHs for PDCCH repeated transmission are associated, so that the terminal can determine the PDCCH repeatedly transmitted based on the transmission resources of the associated candidate PDCCHs, thereby reducing the monitoring range of PDCCH or DCI signaling.

Step 102: and determining the range of the candidate PDCCH to be monitored based on the association relationship.

After obtaining the association relation between the transmission resources of at least two PDCCH candidates through the configuration information, the terminal can determine the range of the PDCCH candidates to be monitored based on the association relation.

Specifically, the terminal obtains the association relation of the transmission resources of at least two candidate PDCCHs through the configuration information, the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission, and the transmission resources of the at least two candidate PDCCHs used for PDCCH repeated transmission are associated based on the association relation, so that the terminal can determine the range of the candidate PDCCHs to be monitored, namely the PDCCH repeated transmission, based on the association relation, thereby reducing the monitoring range of PDCCH or DCI signaling, further reducing the times and complexity of blind detection, and solving the problem of higher complexity of PDCCH blind detection in the prior art.

Optionally, in this embodiment, the association relationship may include at least one of the following:

(1) At least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

(2) At least two search space indexes and/or at least one aggregation level;

(3) Index and/or aggregation level of the PDCCH candidates;

(4) Index of the candidate PDCCH and/or index of the search space.

In this way, by including at least one item in the association relationship, the terminal can determine the to-be-monitored range of the candidate PDCCH based on at least one candidate PDCCH combination, at least two search space indexes and/or at least one aggregation level, the index and/or aggregation level of the candidate PDCCH, the index and/or index of the search space of the candidate PDCCH, and the like, thereby reducing the monitoring range of the PDCCH.

Further, alternatively, in the present embodiment, when there are a plurality of configured association relationships, the maximum number of the monitorable association relationships may be determined and the monitorable association relationship may be determined from the plurality of association relationships.

Wherein, the monitorable association relation can be determined by the following way: the index of the candidate PDCCH or the index of SS set or the index of CORESET or the numerical value of the aggregation level in the association relation. The monitorable association is determined according to the order from small to large of the candidate PDCCH or SS set index or CORESET index contained in the association, or according to the order from small to large or from large to small of the aggregation level value in the association.

When an association is determined as a monitorable state, all transmission resources (e.g., SS set, PDCCH candidates or CORESET, etc.) contained therein are in a monitorable state (e.g., monitorable PDCCH candidates, monitorable SS set, monitorable CORESET, etc.).

In addition, alternatively, in the present embodiment, the range of the monitorable PDCCH candidates may also be determined based on the range of the PDCCH candidates to be monitored. At this time, the maximum number of the monitorable PDCCH candidates and the monitorable PDCCH candidates may be determined based on the range of the PDCCH candidates to be monitored;

wherein, two candidate PDCCHs are bound as a monitorable candidate PDCCH or each candidate PDCCH is a monitorable candidate PDCCH.

Here, the maximum number of the candidate PDCCHs that can be monitored may be greater than, equal to, or less than the maximum number of the PDCCH in non-repeated transmission, which is not particularly limited herein.

In addition, it should be noted that the PDCCH candidates to be monitored do not necessarily belong to the candidate PDCCHs that can be monitored, and certain rules need to be satisfied, for example, the maximum monitoring capability of the terminal cannot be exceeded, that is, the maximum number of times of detection cannot be exceeded.

Wherein, the monitorable candidate PDCCH can be determined by the following way:

when one of the PDCCH candidates in the PDCCH candidate combination in the association relationship is in a monitorable state, determining the other PDCCH candidates in the PDCCH candidate combination or a search space in which the other PDCCH candidates are located as a monitorable state; or,

and when one of the corresponding search spaces in at least two search space indexes in the association relation is in a monitorable state, determining the other corresponding search spaces in the at least two search space indexes as the monitorable state.

It should be noted that the search space in the state to be monitored does not necessarily belong to a state that can be monitored, and certain rules need to be satisfied, for example, the maximum monitoring capability of the terminal cannot be exceeded, that is, the maximum detection times cannot be exceeded.

In this way, by determining one of the candidate PDCCHs or search spaces in the association relationship which are in a monitorable state, other candidate PDCCHs or search spaces with the association relationship are also monitored, the range of the monitorable candidate PDCCHs is determined based on the association relationship, and the monitoring range of the PDCCHs is reduced. Moreover, the situation that one of the PDCCH candidates based on the association relationship is a PDCCH candidate which can be monitored, and the PDCCH candidate associated with the PDCCH candidate is not the PDCCH candidate which can be monitored, namely the PDCCH retransmission cannot be carried out is avoided.

In addition, optionally, in this embodiment, a time parameter of PDCCH repeated transmission may also be acquired, and then, based on the association relationship and the time parameter, a range of PDCCH candidates to be monitored may be determined.

Specifically, when determining the range of the candidate PDCCH to be monitored based on the association relationship and the time parameter, the monitoring resource determined by the association relationship and the time parameter together may be determined as the range of the candidate PDCCH to be monitored.

In this way, the monitoring range is determined together by determining the association relation and the time parameter of the PDCCH repeated transmission, and the commonly determined monitoring resource is determined as the range of the PDCCH candidates to be monitored, namely, the PDCCH candidates in the monitoring range are determined as the PDCCH candidates to be monitored, so that the monitoring range of the PDCCH is further reduced.

Further, optionally, in this embodiment, when acquiring the time parameter of PDCCH retransmission, at least one of the following may be included:

firstly, obtaining a time parameter of the PDCCH repeated transmission based on configuration information, wherein the time parameter of the PDCCH repeated transmission is configured in the configuration information.

Specifically, the network side device may configure, through the configuration information, a time parameter for the PDCCH repeated transmission to the terminal.

At this time, the time parameter obtained by the terminal based on the configuration information includes at least one of the following:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

And secondly, obtaining the time parameter of the PDCCH repeated transmission based on a predefined rule.

Specifically, the terminal may further obtain a time parameter of PDCCH retransmission based on a predefined rule, where the time parameter may include any one of the following manners:

the first way is: the terminal may determine the period, offset, and/or duration of the target search space as a time parameter for PDCCH retransmission.

Wherein the target search space comprises any one of the following:

search spaces with the lowest search space indexes in the association relation;

Search spaces with highest search space indexes in the association relation;

search space where a first candidate PDCCH in a candidate PDCCH combination in the association relationship exists;

search space where a second PDCCH candidate in one PDCCH candidate combination in the association relationship is located;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is selected;

the search space with the lowest or highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relationship.

That is, the present embodiment may determine the period, offset, and/or duration of any of the foregoing search spaces as the time parameter of PDCCH retransmission, thereby implementing implicit indication of the time parameter of PDCCH retransmission.

The second way is: and determining the default period as a period value of the repeated transmission of the PDCCH.

Specifically, the default period may be 1 slot, 2 slots, or K slots, which is not particularly limited herein.

Third mode: and determining the default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

In particular, the default intra-slot monitored symbol may be a symbol set including one or more symbols, which is not particularly limited herein.

In this way, the implicit indication of the time parameter of the PDCCH repeated transmission is realized in any mode, so that the terminal can obtain the time parameter based on the predefined rule, and the terminal can obtain the candidate PDCCH to be monitored based on the association relation and the time parameter, thereby reducing the monitoring range of the PDCCH.

In this way, the embodiment associates transmission resources of at least two candidate PDCCHs for PDCCH retransmission based on the association relationship, so that the terminal can determine the range of the monitorable candidate PDCCHs, that is, determine the PDCCH for retransmission based on the association relationship, thereby reducing the monitoring range of PDCCH or DCI signaling, further reducing the frequency and complexity of blind detection, and solving the problem of higher complexity of PDCCH blind detection in the prior art.

In addition, as shown in fig. 2, a flowchart of steps of a control channel monitoring method applied to a network side device in an embodiment of the present application is shown, where the method includes the following steps:

step 201: and sending configuration information to the terminal.

The configuration information is configured with an association relation between transmission resources of at least two candidate PDCCHs, and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission.

The network side equipment sends configuration information to the terminal, and the association relation between the transmission resources of at least two PDCCH candidates is configured in the configuration information, the transmission resources of the at least two PDCCH candidates are used for PDCCH repeated transmission, so that the association of the transmission resources of the at least two PDCCH candidates for PDCCH repeated transmission through the association relation is realized, the monitoring range of PDCCH or DCI signaling can be reduced when the terminal determines the range of the PDCCH candidates to be monitored based on the association relation, the frequency and complexity of blind detection are further reduced, and the problem of high complexity of PDCCH blind detection in the prior art is solved.

Optionally, in this embodiment, the association relationship includes at least one of the following:

(1) At least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

(2) At least two search space indexes and/or at least one aggregation level;

(3) Index and/or aggregation level of the PDCCH candidates;

(4) Index of the candidate PDCCH and/or index of the search space.

In addition, optionally, in this embodiment, a time parameter of PDCCH retransmission needs to be sent to the terminal through configuration information; and/or, based on a predefined rule, obtaining the time parameter of the PDCCH repeated transmission, so that the terminal jointly determines the range of the candidate PDCCH to be monitored based on the association relation and the time parameter of the PDCCH repeated transmission, thereby reducing the monitoring range of the PDCCH.

Specifically, the time parameter transmitted through the configuration information may include at least one of the following:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

In addition, when obtaining the time parameter of PDCCH retransmission based on the predefined rule, any one of the following manners may be included:

the first way is: the network-side device may determine the period, offset, and/or duration of the target search space as a time parameter for PDCCH retransmission.

Wherein the target search space comprises any one of the following:

search spaces with the lowest search space indexes in the association relation;

search spaces with highest search space indexes in the association relation;

Search space where a first candidate PDCCH in a candidate PDCCH combination in the association relationship exists;

search space where a second PDCCH candidate in one PDCCH candidate combination in the association relationship is located;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is selected;

the search space with the lowest or highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relationship.

The second way is: and determining the default period as a period value of the repeated transmission of the PDCCH.

Third mode: and determining the default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

It should be noted that, for the specific description of the foregoing, reference may be made to the content related to the terminal side, which is not limited herein.

The present application is specifically illustrated by the following examples.

First embodiment:

in this embodiment, the network side device may configure, for the terminal, an association relationship between at least two PDCCH candidates in several ways, so that the number of times of combining and blind detection that the terminal needs to perform when performing combining and decoding does not exceed the capability of the terminal itself.

The first way is:

the network side device configures K associated candidate PDCCH (PDCCH candidate) combinations, each PDCCH candidate combination includes 2 PDCCH candidates, each PDCCH candidate is configured as a search space (SS set for short) index where the PDCCH candidates are located, an aggregation level, and a PDCCH candidate index, and K is a positive integer greater than or equal to 1.

For example, one associated PDCCH candidate combination is configured as follows:

SS set a+AL8+PDCCH candidate k，

SS set b+AL8+PDCCH candidate m；

wherein SS set a represents a search space index of a, SS set b represents a search space index of b, AL represents an aggregation level, AL8 represents an aggregation level of 8,PDCCH candidate k represents a PDCCH candidate index of k, PDCCH candidate m represents a PDCCH candidate index of m.

In addition, each PDCCH candidate combination may further include 2 or more PDCCH candidate related indexes for supporting the case that the repetition number is greater than 2, and the configuration manner is as described above, which is not specifically limited herein.

For each configuration of PDCCH candidate, according to a predefined PDCCH candidate transmission resource determination formula (HASH function, pre-mapping function, etc.) in the existing protocol, the terminal can determine a specific time-frequency domain resource where the PDCCH candidate is located. However, configuring only one PDCCH candidate combination may limit scheduling flexibility of the network side device, and thus, the network side device may achieve a compromise between scheduling flexibility and PDCCH decoding complexity by configuring K associated PDCCH candidate combinations.

The network side device may also use Radio Resource Control (RRC) signaling to configure P PDCCH candidates combinations, and then use medium access control-control element (MAC-CE) signaling to activate K combinations therein, so as to further increase scheduling flexibility. In each time slot or detection unit (e.g., one span), the terminal only needs to detect the active PDCCH candidate combinations, and if the number of active PDCCH candidate combinations is K, the terminal needs to perform the combined decoding K times (i.e., detect K times).

The specific signaling configuration may be represented by the following higher layer parameters, repetition pattern or PDCCH CandidateCombinationList, for example:

PDCCHCandidateCombinationList:SEQUENCE(SIZE(1..P))OF PDCCH CandidateCombination

each pdcchscandidethancombination contains the specific configuration of SS set where 2 PDCCH candidates are located, aggregation level and PDCCH candidate index. For example, the number of the cells to be processed,

PDCCHCandidateCombination：{

PDCCHCandidate1 candidate_info

PDCCHCandidate2 candidate_info

}

candidate_info is a specific configuration of PDCCH candidate, including,

candidate_info：{

SearchSpace SearchSpaceId optional

AggregationLevel ENUMERATED{1,2,4,8,16} optional

PDCCHCandidateIndex INTEGER(0..7) optional

}

the specific configurations of SearchSpace, aggregationLevel and pdchcandodidate index above are SSset, aggregation level and PDCCH candidate index, respectively, are optional configurations. In general, the first way explicitly configures the association between 2 PDCCH candidates, i.e. the parameter pdccchcandidatecombination contains the configuration of two PDCCH candidates, pdccchcandidate 1 and pdccchcandidate 2.

In addition to the above configuration, each PDCCH transmitting combination may further include a number of SS sets or aggregation levels or PDCCH transmitting indexes, for saving signaling overhead in configuration. For example, one PDCCH candidate combination contains PDCCH candidates with aggregation levels of al= 8,PDCCHcandidate index of 1 and 4 for SS set a, and PDCCH candidates with aggregation levels of al= 8,PDCCH candidate index of 2 and 3 for SS set b. The corresponding signaling may be SS set or aggregation level under candidate_info or one or more parameters in PDCCH candidate index may each contain multiple configuration values. Regardless of how configured, the network device will always explicitly configure the associated 2 PDCCH candidates separately.

The terminal can determine the range to the PDCCH candidate to be monitored according to the configuration information. In addition, by the configuration method, the number of the configured PDCCHCandida to be monitored or to be combined detected can be ensured not to exceed the blind detection capability of the terminal.

The second way is:

the network side device configures 2 or more SS sets for PDCCH retransmission (i.e., PDCCH retransmission may only occur in the configured SS sets), and/or one or more PDCCH transmitting possible aggregation levels.

For example SS set a and b may be used for PDCCH transmission and the aggregation level may be 4 or 8. For SS set a, 6 PDCCH candidates are configured at al=4, and 4 PDCCH candidates are configured at al=8; for SS set b, 3 PDCCH candidates are configured at al=4, and 5 PDCCH candidates are configured at al=8.

When the terminal performs the soft combining operation, only the PDCCH candidate with any two al=4 in SS set a and b is combined and decoded, or the PDCCH candidate with any two al=8 is combined and decoded. If the PDCCH retransmission is further limited to be carried out in different SS sets or CORESET, only 2 PDCCH candidates need to be selected from the SS sets a and b for combination, and the combination frequency is further reduced. In this example, al=4, the terminal performs at most 6*3 =18 times, al=8, and at most 4*5 =20 times, so in this configuration, the terminal performs at most 18+20=38 times of merging decoding operations.

If the aggregation level is not limited, the terminal needs to perform combined decoding on the PDCCH candidate pairs under all aggregation levels, and the number of times of combined decoding is required further increases.

The specific signaling configuration may be represented by a high-level parameter repetition pattern or pdchcandidatecombination list, for example:

RepetitionPattern：SEQUENCE(SIZE(1..K))OF SearchSpaceId

Wherein, searchSpaceid is the index of SS set, and K is the number of configured SS sets.

As another example of this, and as another example,

in all embodiments, the repetition pattern or the pdcc hcandodidatecombination list may be configured under a PDCCH-related higher layer parameter (PDCCH-Config), and each BWP (bandwidth part) may be configured one.

The parameter nrofCandidates is used for representing the value of the aggregation level involved in the association relation and the number of corresponding PDCCH candidates. The numbers n0, n1, n2, n3, n4, n5, n6, n8 are only illustrative, and other values may be taken, for example, in the case of PDCCH retransmission, the number of PDCCH candidates under certain aggregation levels may be 7, or 9 to 16, etc., which are not limited in the present application.

In addition, the correspondence between SS set and aggregation level may be further defined, for example, two PDCCHs can be: al=4 from SS set 1 and SS set 5; al=8 from SS set2 and SS set 5; the signaling may be:

PDCCHCandidateCombinationList:SEQUENCE(SIZE(1..N))OF PDCCHC andidateCombination

n is the number of sets of AL and SS set associations configured, each pdccchcandodidateassociation comprising an aggregation level and corresponding SS set, e.g.,

PDCCHCandidateCombination：{

AggregationLevel ENUMERATED{1,2,4,8,16}

SearchSpaceList:SEQUENCE(SIZE(1..K))OF SearchSpaceId

}

The terminal can determine the range to the PDCCH candidate to be monitored according to the configuration information. In addition, by the configuration method, the number of the PDCCH candidates to be monitored or to be combined and detected can be ensured not to exceed the blind detection capability of the terminal.

Third mode:

the association between 2 PDCCH candidates is configured by the network side device, including the index and/or aggregation level of PDCCH candidates, and SS set is not limited. For example, the index (index) of the 2 PDCCH candidates may have values of 3,5 and 6, the aggregation level may have a value of 4 or 8, and the index and the aggregation level of the 2 PDCCH candidates may be freely combined in the values of PDCCH candidate index and the aggregation level configured by the network side device; or index and aggregation level of 2 PDCCH candidates may only be al= 4,PDCCH candidate index of 3 or 6; it is also possible that al= 8,PDCCH candidate index is 5 (i.e. corresponding to a further limitation).

After the terminal receives the configuration of the network side equipment side, the terminal can blindly check the PDCCH candidate combination meeting the condition in any 2 SS sets. For example, the former is configured as an example (the index of the 2 PDCCH candidates associated may have values of 3,5 and 6, and the aggregation level is 4 or 8), and the number of PDCCH candidates with al=4 in SS set1 is 3 (PDCCH candidate index is 0,1, 2), so PDCCH candidate index with the aggregation level of 4 and PDCCH candidate index of 3,5 or 6 is not provided; for example, since the number of PDCCH candidates with al=8 in SS set 2 is 4 (PDCCH candidate index is 0,1,2, 3), PDCCH candidate index with aggregation level 8 and PDCCH candidate index is 5 or 6 is not provided.

In a similar way, the terminal can determine the SS set that meets the condition, for example, SS set 1, al= 8,PDCCH candidate index is 3 or 5; SS set 3, al= 4,PDCCH candidate index is 3 or 5, al= 8,PDCCH candidate index is 3,5 or 6; SS set 5, al= 4,PDCCH candidate index is 3 or 5. When the terminal can detect al=4 at the time of detection, PDCCH can be SS set 3, al= 4,PDCCH candidate index is 3 or 5, and SS set 5, al= 4,PDCCH candidate index is 3 or 5, namely, there are 4 possible combinations; the PDCCH candidate for detecting al=8 may be SS set 1, al= 8,PDCCH candidate index is 3 or 5, and SS set 3, al= 8,PDCCH candidate index is 3,5 or 6, and 6 kinds of combinations are used, i.e. the terminal performs 4+6=10 times of combining decoding at most. In addition, the base station can adjust the number of times that the terminal needs to perform combining decoding by adjusting the configuration of PDCCH candidate index and aggregation level and the number of PDCCH candidates in SS set.

The specific signaling configuration may also be represented by a higher layer parameter repetition pattern or pdchcandidatecombination list, for example:

RepetitionPattern：{

PDCCHCandidateIndex SEQUENCE(SIZE(1..5))OF INTEGER(0..7)

}

or,

The parameter nrofCandidates is used for representing the value of the aggregation level involved in the association relation and the number of corresponding PDCCH candidates.

If the relationship between the aggregate level and PDCCH candidate index is further defined, the signaling may also be,

PDCCHCandidateCombinationList:SEQUENCE(SIZE(1..L))OF PDCCH CandidateCombination

l is the number of groups of AL and PDCCH candidate index relationships of the configuration, each pdccchcandidatecombination comprising an aggregation level and a corresponding PDCCH candidate index, e.g.,

PDCCHCandidateCombination：{

AggregationLevel ENUMERATED{1,2,4,8,16}

PDCCHCandidateIndex SEQUENCE(SIZE(1..5))OF INTEGER(0..7)

}

the terminal can determine the range to the PDCCH candidate to be monitored according to the configuration information. In addition, by the configuration method, the number of the PDCCH candidates to be monitored or to be combined and detected can be ensured not to exceed the blind detection capability of the terminal.

Fourth mode:

the association between 2 PDCCH candidates, including the index of PDCCH candidate and the index of SS set, is configured by the network side device, and is not limited to the aggregation level. In a similar manner to the previous embodiments, the association between PDCCH candidate index and SS set may not be limited, or the association between them may be limited.

For example, without limiting the association of PDCCH candidate index and SS set, PDCCH candidate index is 2 and 3, SS set is 1 and 2, meaning that two PDCCH candidates may be PDCCH candidates with PDCCH candidate index of 2 and 3 at any aggregation level under SS set 1 and PDCCH candidates with PDCCH candidate index of 2 and 3 at any aggregation level under SS set 2. If the association of PDCCH candidate index and SS set is defined, for example, PDCCH candidate may be PDCCH candidate index PDCCH candidate of 2 at any aggregation level under SS set 1 and PDCCH candidate index PDCCH candidate of 2 or 3 at any aggregation level under SS set 2. The terminal needs to detect a combination of all PDCCH candidates satisfying the above conditions.

The specific signaling configuration may also be represented by a higher layer parameter repetition pattern or pdchcandidatecombination list, for example:

RepetitionPattern：{

PDCCHCandidateIndex SEQUENCE(SIZE(1..5))OF INTEGER(0..7)

SearchSpaceList:SEQUENCE(SIZE(1..U))OF SearchSpaceId

}

wherein U is the number of SS sets configured

Or also or alternatively

PDCCHCandidateCombinationList:SEQUENCE(SIZE(1..A))OF PDCCH CandidateCombination

A is the number of sets of configured PDCCH candidate index and SS set relationships, each pdccchcandodidatecombination containing an SS set and corresponding PDCCH candidate index, e.g.,

PDCCHCandidateCombination：{

SearchSpace SearchSpaceId

PDCCHCandidateIndex SEQUENCE(SIZE(1..5))OF INTEGER(0..7)

}

or also or alternatively

PDCCHCandidateCombinationList:SEQUENCE(SIZE(1..B))OF PDCCH CandidateCombination

B is the number of sets of SS set and PDCCH candidate index relationships configured, each pdccchcandodidatecombination comprising a type PDCCH candidate index and corresponding SS set, e.g.,

PDCCHCandidateCombination：{

PDCCHCandidateIndex INTEGER(0..7)

SearchSpaceList:SEQUENCE(SIZE(1..V))OF SearchSpaceId

}

wherein V is the number of SS sets configured

Through the above modes, the network side equipment side configures an association relationship (also called a link relationship) between two PDCCH candidates of the terminal. The two PDCCHs can be used to carry the same control information, or a repetition version of PDCCH or a repetition version of DCI signaling, or two transmission opportunities (transmission opportunities) as one control signaling.

In this embodiment, the network side device may configure multiple aggregation levels for the terminal to perform blind detection, but in the blind detection process, for example, when performing soft combining decoding, the terminal only performs combining decoding on PDCCH candidates with the same aggregation level, and different levels of PDCCH candidates may be used in the case of multiple combining decoding or where two PDCCH candidates are independently decoded.

The terminal can determine the range to the PDCCH candidate to be monitored according to the configuration information. In addition, by the configuration method, the number of the PDCCH candidates to be monitored or to be combined and detected can be ensured not to exceed the blind detection capability of the terminal.

Second embodiment:

after the network side device explicitly configures the time parameter (such as the period, offset or duration of retransmission, etc.) of the PDCCH retransmission, there may be a situation that the number of SS sets or the number of transmitters determined by this configuration, for example, in the first mode of the first embodiment, two PDCCHs candidate are configured from SS set 1 and SS set 2 respectively, and SS set 1 has three monitoring opportunities in one slot (slot), which may cause an increase of the number of attempts of the terminal in merging and decoding, and further, there may be a situation that the upper limit of the blind detection times is reached and the PDCCH is not correctly solved. For another example, in order to increase the flexibility of scheduling, or considering that the SS sets have a certain period, the SS sets configured under a certain time slot are not necessarily in a state to be monitored, so the number of SS sets greater than the repetition number is configured in the configuration association relationship, and the terminal only needs to determine possible transmission resources of the PDCCH according to the SS sets to be monitored during detection, so that the number of SS sets to be monitored in a certain time slot may be increased, which may cause the increase of the number of attempts of the terminal during merging and decoding, and further may cause the situation that the upper limit of the blind detection number is not reached and the PDCCH is not correctly solved.

Thus, the range of merging decoding can be narrowed by the configuration or instruction of the network-side device.

One method is that the network device side configures or indicates a monitoring opportunity of PDCCH retransmission in a time slot, for example, similar to the monitoring opportunity of configuring SS set in time slot, defining a monitoring opportunity of retransmission in time slot as follows:

monitoringSymbolsWithinSlotForRepetition BIT STRING(SIZE(14))

the parameter may define a symbol indicating the start of PDCCH retransmission under a retransmission pattern or association (e.g., parameter repetition pattern or parameter pdccchcanddidetecombineationlist). For example, 14 bits 00100000100000 indicates that repeated transmissions may begin with symbols 3 and 9, respectively.

In addition, a duration (duration) is configured to determine, together with a parameter monitoringsymbols withintfortforrepetition, that the symbol occupied by the retransmission is, for example, 2 symbols in duration, and then it may be determined that the PDCCH retransmission may occur on symbols 3,4,9, and 10.

The symbol that may be occupied by a retransmission may also be indicated by the parameter monitoringsymbols witoltforrepetition, without the need to configure a parameter duration, e.g. 14 bits 00110000110000, respectively, to indicate that a retransmission may be on symbols 3,4,9, 10.

The terminal may be configured according to the association relationship in embodiment 1 and the parameters monitoringSymbolsWithinSlotFor Repetition and/or duration in this embodiment are determined together when determining the SS set or PDCCH candidate to be monitored. If PDCCH transmission or SS set where it is located is on a symbol determined by parameters monitoringsymbol withinslotforrepetition and/or duration, it is possible to use for PDCCH retransmission. For example, taking the first manner in embodiment 1 as an example, SS sets where 2 PDCCHs are located are SS set1 and SS set 2, SS set1 is in a state to be monitored on symbols 3,4,6, and 7, SS set 2 is in a state to be monitored on symbol 6,7,9,10, and parameters monitoringsymbol withintforrepetition and/or duration determine that repeated transmission is only possible on symbols 3,4,9, and 10, then the terminal can determine that SS set1 is possible for PDCCH repeated transmission on symbols 3 and 4, and SS set 2 is possible for P DCCH repeated transmission on symbols 9 and 10. As another example, taking the second manner in embodiment 1 as an example, PDCCH candi date may be transmitted on SS set1, 3,5,7, where SS set1, 3, and 7 are in a state to be monitored on a certain time slot, the monitoring occasion of SS set1 is on symbol 3, the monitoring occasion of SS set 3 is on symbols 3 and 4, the monitoring occasion of SS set 7 is on symbols 4 and 6, and parameters monitoringSymbolsWithi nSlotForRepetition and/or duration determine that repeated transmission is only possible on symbols 4 and 6, that is, repeated transmission is only possible in SS set 3 and SS set 7.

Another method is to configure a monitor symbol with a synchronization symbol for repetition and/or duration under SS set parameter (SearchSpace), and the specific method is similar to the method configured under repeated pattern or association configuration (i.e. outside the SearchSpace), but its scope is only corresponding SS set. For example, taking the first manner in embodiment 1 as an example, SS sets where 2 PDCCHs are located are SS set 1 and SS set 2, SS set 1 is in a state to be monitored on symbols 3,4,6, and 7, and configuration parameters monitoringsymbol withinslot for repetition and/or duration in SS set 1 indicate that terminal retransmission is only possible on symbols 3 and 4, then the terminal can determine that SS set 1 is only possible on symbol 3 for PDCCH retransmission.

Both methods use RRC signaling to configure the monitoring occasions of the repeated transmissions in one slot, and may also use MAC-CE or DCI signaling to dynamically change the monitoring occasions of the repeated transmissions. The 14 bits may still be used to represent the symbol at which the monitoring starts or the symbol occupied, and a smaller number of bits may be used to reduce the signaling overhead. For example, in a certain time slot, multiple SS sets to be monitored may occur in the range of symbols 4-10, e.g., 4,5,7,9,10. When the carrier in the MAC CE is used, 8 bits may be used to indicate the symbol at the start of the repeated transmission or the symbol occupied by the symbol in a bitmap (bit map) manner, where the first bit indicates the first symbol (i.e. symbol 4) where the monitoring timing of the RRC signaling configuration is located, and the 7 bits respectively indicate symbols 5-11. If DCI signaling bearers are used, this bitmap approach may also be used, if fewer repeated transmission monitoring symbols are indicated at a time, e.g. 1 symbol, and 3 bits may also be used for encoding, e.g. 000 representing the first symbol (i.e. symbol 4) where the monitoring occasion of the RRC signaling configuration is located. The size of the DCI information field may also be dynamically changed by configuration of RRC signaling, for example, repeated transmission indicated by RRC signaling may occur in symbols 1-3 for each SS set, and the DCI information field is 2 bits. If the duration is required to be indicated, the value is directly indicated.

Third embodiment:

in the existing protocol, SS set is configured with a certain period and offset value, and need not be monitored in every slot. Therefore, when configuring the association relationship of multiple PDCCH candidates for multiple PDCCH repetition release transmission, it is also necessary to configure and indicate the time information in which it is located.

The period and/or offset of the repeated transmission may be explicitly configured in the association relationship.

If SS set configuration is included in the association configuration between PDCCH candidates, for example, the first, second and fourth modes in embodiment 1 are described. The period or transmission resource of the repeated transmission may also be determined by the period and/or the offset of one of the SS sets, so that the explicit configuration of the time parameter may be reduced, i.e. the repeated transmission time parameter may be implicitly acquired by the configuration of the SS set. The period and/or the time parameter of the offset of the SS set are/is determined by a parameter (monitoringslotperiodic and offset) configured in the higher layer parameter SearchSpace.

A specific method is as follows: the period of the PDCCH retransmission is set to be the period of the SS set with the lowest SS set index or the period of the SS set with the highest index in the association configuration.

Alternatively, when the association between two PDCCH candidates is configured, as in the first embodiment of embodiment 1, SS set where the two associated PDCCH candidates are located is a and b, respectively. For example, the period of SS set where the first PDCCH transmitting in the association relationship is located may be set as the period of repeated transmission, i.e., the period of SS set a.

In addition, if there is an SS set configured with an intra-slot monitoring opportunity, the intra-slot monitoring opportunity of one of the SS sets may also be made as a repeated transmission monitoring opportunity in the slot. The one SS set may be an SS set having a lowest SS set index or a highest SS set index in the association configuration; or the SS set with the lowest SS set index or the highest SS set index in the SS set with the time slot monitoring opportunity (with the higher-layer parameter monitoringSymbolsWithinSlot) configured in the association configuration; the SS set where the first or second PDCCH candidate in one PDCCH candidate combination in the association configuration is located may also be set; the SS set with the lowest or highest index among SS sets where two PDCCHs candidates in one PDCCH transmitting group are located in the association configuration may also be used.

In some cases, the above-mentioned one SS set may not have a corresponding time parameter, for example, no intra-slot monitoring opportunity is configured (i.e., no higher-layer parameter monitoringsymbol is configured), and at this time, the time parameter of the repeated transmission or association relationship may be predefined as a default time parameter.

Alternatively, instead of predefining the time parameter of the retransmission or association as a time parameter of the SS set, the time parameter of the retransmission or association is directly determined as a default time parameter (i.e., independent of the SS set).

The default time parameters for the above two cases may be: the default period is 1 slot or 2 slots or K slots, the default intra-slot monitoring opportunity is a symbol set L1, comprising one or more symbols, such as symbol 0,1,2 or symbol 0,1 or symbol 1,2 or symbol 1, or symbol 2, or symbol 0, etc., but may be other symbols or symbol sets greater than 2.

For another example, when intra-slot repeat transmission is employed, the default repeat period may be 1 slot or K slots; when inter-slot repeat transmission is employed, the default repeat period may be 2 slots or K slots.

Fourth embodiment:

when the network side equipment side configures the association relation for the terminal, the method can also be used for indicating the terminal to perform soft combining decoding, so that two pieces of information (respectively indicated by the association relation and the terminal decoding method, namely, the method for indicating the terminal to perform soft combining decoding) can be carried by only one piece of signaling.

In addition, the terminal may be explicitly configured to perform soft combining decoding or independent decoding.

In the application, soft combining decoding refers to that a terminal combines soft information of 2 PDCCH candidates and then decodes the soft information together, and the decoding mode can obtain better decoding performance; and independent decoding means that the terminal decodes 2 PDCCH candidates respectively, and if only one PDCCH candidate is decoded, the repeated transmission is considered to be correct. The complexity of soft combining decoding is higher than that of a traditional blind detection process, namely, operations such as channel estimation, demodulation and the like are required to be performed on physical resources where 2 PDCCH (physical downlink control channel) candidates are located, although the decoding process is similar to that of the traditional blind detection process, the complexity is lower than that of the traditional blind detection process for 2 times, namely, only one time of decoding (channel decoding) is required, and the complexity of how to define the soft combining process is a problem and can directly influence the maximum blind detection times and the decoding capability of a terminal. From the complexity perspective, the complexity of soft combining decoding should be defined as the complexity of more than 1 and less than 2 traditional blind tests, however, the complexity is defined as a non-integer value, which brings certain difficulty to the scheduling of network side equipment and the calculation of blind tests by a terminal.

The method is that when the network side equipment configures the terminal to perform soft combining decoding or configures the terminal association relation, the complexity of the decoding process is defined as 1 complexity unit of traditional blind detection. At this time, even if the terminal does not adopt soft combining decoding, for example, adopts independent decoding, it needs to be defined as the complexity of 1 traditional blind test, because the network side device is set based on soft combining decoding performed by the terminal when configuring specific values such as SS set, PDCCH candidate, aggregation level, etc., and directly affects which SS sets can be subjected to blind test (which SS sets can be subjected to blind test is currently determined according to the pseudo code in the protocol). In order to avoid that the terminal processing complexity exceeds its upper limit of capability, a new upper limit of maximum blind detection times may be defined in this case, i.e. different from the conventional upper limit of blind detection times. In this way, the complexity of one soft combining decoding is defined to be 1 time, i.e. less than the actual complexity, and for a traditional terminal, the maximum blind detection times need to be reduced to be suitable for the terminal capability. In addition, for the terminal with stronger capability, the maximum blind detection times (namely the maximum number of PDCCH candidates which can be monitored) can be increased; in addition, the maximum number of blind tests may be configurable instead of predefined.

The other way is that when the network side equipment configures the terminal to perform soft combining decoding or configures the terminal association relation, the complexity of the decoding process is defined as 2 complexity units of traditional blind detection. In practice, the complexity of its coding process is less than 2 complexity units of conventional blind detection. In this case, the number of PDCCH candidates that can be monitored at maximum may be increased by a certain amount to accommodate the decoding capability of the terminal. The maximum number of PDCCH candidates that can be monitored can also be reduced to a value if for low capability terminals, such as reduced capability (REDCAP, reduced capability terminal). In addition, the maximum number of PDCCH candidates that can be monitored can be respectively configured according to different terminal capabilities.

In addition, how to calculate which PDCCH candidates can be monitored during soft combining decoding also needs to be distinguished from the conventional blind detection procedure. For example, according to the association configuration in embodiment 1, the terminal may obtain transmission resources between 2 PDCCHs candidates (e.g., one at SS set 1 and the other at SS set 5). If the conventional blind detection procedure is followed, it is possible that both PDCCH candidates in SS set 1 can be blind detected, and neither PDCCH candidate in SS set 5 can be blind detected. In this case, it is unclear whether the terminal needs to decode the pair of PDCCH candidates. Possible solutions are:

A. If one of the associated pair of PDCCH candidates is in a monitorable state (determined according to the maximum number of PDCCH candidates that can be monitored), the other PDCCH candidate or the SS set in which the other PDCCH candidate is located can be monitored.

B. If one of the associated two SS sets is in a monitorable state, the other SS set also needs to be monitored (e.g., option 2 in example 1)

C. In calculating the number of PDCCH candidates that can be monitored, the two PDCCH candidates associated together are calculated as one PDCCH candidate (i.e., one blind test) or two PDCCH candidates (i.e., two blind tests) that can be monitored.

The maximum number of the monitorable association relationships and the monitorable association relationships can be determined based on the association relationships. Unlike the prior art, the maximum number of times of the candidate PDCCHs that can be monitored is not predefined, but the maximum number of times of the association relationship that can be monitored is configured by the base station or predefined in the protocol. For example, in the first embodiment, the network device configures association relationships between resources used for PDCCH retransmission for the terminal in four ways, and when configuring the association relationships, the terminal needs to determine which association relationships can be monitored. For example, the maximum number of the association relations which can be monitored can be K _a The number of times, in particular,

in one mode, the relationship that can be monitored can be K with the lowest index in the relationship that is configured or activated or indicated by the network device _a And the candidate PDCCH combinations.

In the second mode, the association relationship that can be monitored may be determined according to the SS set index in the association relationship. Specifically, the terminal determines the relationship that can be monitored according to the number of SS set. For example, the terminal first determines that the combination between the SS set with the lowest index and all the candidate PDCCHs in the SS set with the next lowest index of the associations belongs to an association relationship that can be monitored (e.g., P is present _a Secondary), and then the terminal re-determines the number of combinations (e.g., P) between the SS set having the third lowest index and all the candidate PDCCHs in the SS set having the lowest index _b Secondary), if P _a +P _b The combination of the SS set with the third low index and all the candidate PDCCHs in the SS set with the lowest index is an association relation which can be monitored if the combination is smaller than the maximum monitorable association relation coefficient configured by the network equipment, otherwise, the combination is an association relation which cannot be monitored; if the relation is calculated as a monitorable relation, the terminal further determines SS set with the third lowest index and SS set with the third lowest index The determination method is similar to determining whether the combination between the SS set of the third low index and all the PDCCH candidates in the SS set having the lowest index is a monitorable association. Until the terminal determines that K is not exceeded _a And (5) the association relation can be monitored.

In the third mode, the terminal determines K according to the index of the PDCCH candidate or the value of the aggregation level _a And each can monitor the association relation. The specific method is that the association relation of the index with the lower candidate PDCCH or the smaller aggregation level value is the monitorable association relation. Taking the index of the PDCCH candidates as an example (the method of determining the monitorable association relationship by using the aggregation level value is similar), the terminal first determines the number of combinations between the PDCCH candidates with the lowest PDCCH candidate index among different SS sets, and the aggregation level is the minimum value in one or more configured aggregation levels at this time, and is used as the monitorable association relationship. Then determining whether the number of associations with a larger aggregation level value or with a larger PDCCH candidate index (e.g., a next lowest PDCCH candidate index) exceeds a maximum limit, if the maximum limit is not yet exceeded, continuing to increase the index of the PDCCH candidate until it is determined that K is not exceeded _a And each can monitor the association relation.

In the fourth mode, the terminal determines the relationship that can be monitored according to the PDCCH candidate index or SS set index, and the method is similar to the above modes.

In general, when determining the relationship that can be monitored, the terminal determines, according to one or more of the SS set index or the CORESET index or the PDCCH candidate index or the aggregation level value, the relationship having the smaller index value or the specific aggregation level value (for example, the aggregation level value that can be configured the least) as the relationship that can be monitored in a manner of ordering the index values or the aggregation level values, and thereafter increases the index value until it is determined that K is not exceeded _a And (5) the association relation can be monitored. Correspondingly, the network equipment side can only transmit on the resource corresponding to the monitorable association relationPDCCH, thus, has a common understanding with respect to PDCCH transmission resources or ranges, both on the network device side and the terminal.

By the embodiment, the terminal can obtain a smaller detection range of the PDCCH or DCI signaling, so that the times and complexity of blind combination and/or blind detection are reduced.

Fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Wherein in fig. 3, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 310 and various circuits of memory represented by memory 320, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 300 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The user interface 330 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 310 is responsible for managing the bus architecture and general processing, and the memory 320 may store data used by the processor 310 in performing operations.

Alternatively, the processor 310 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), and the processor may also employ a multi-core architecture.

A memory 320 for storing a computer program; a transceiver 300 for transceiving data under the control of the processor; the processor 310 is operable to execute the following steps in accordance with the obtained executable instructions by invoking a computer program stored in memory:

receiving configuration information sent by network side equipment, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

and determining the range of the candidate PDCCH to be monitored based on the association relationship.

Optionally, the method further comprises: acquiring a time parameter of the PDCCH repeated transmission; and determining the range of the candidate PDCCH to be monitored based on the association relationship and the time parameter.

Optionally, the association relationship includes at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

Index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

Optionally, when there are a plurality of configured association relationships, determining the maximum number of the monitorable association relationships and determining the monitorable association relationships from the plurality of association relationships.

Optionally, after determining the range of the candidate PDCCH to be monitored based on the association relationship, the method further includes:

and determining the range of the monitored PDCCH candidates based on the range of the PDCCH candidates to be monitored.

Optionally, the determining the range of the monitorable candidate PDCCH based on the range of the candidate PDCCH to be monitored includes:

determining the maximum number of the monitored PDCCH candidates and the monitored PDCCH candidates based on the range of the PDCCH candidates to be monitored;

wherein, two candidate PDCCHs are bound as a monitorable candidate PDCCH or each candidate PDCCH is a monitorable candidate PDCCH.

Optionally, when one of the candidate PDCCHs in the candidate PDCCH combination in the association relationship is in a monitorable state, determining other candidate PDCCHs in the candidate PDCCH combination or a search space in which other candidate PDCCHs are located as a monitorable state; or,

And when one of the corresponding search spaces in at least two search space indexes in the association relation is in a monitorable state, determining the other corresponding search spaces in the at least two search space indexes as the monitorable state.

Optionally, the acquiring the time parameter of PDCCH retransmission includes:

obtaining the time parameter of the PDCCH repeated transmission based on the configuration information, wherein the time parameter of the PDCCH repeated transmission is configured in the configuration information; and/or, based on a predefined rule, obtaining a time parameter of the PDCCH repeated transmission.

Optionally, the time parameter obtained based on the configuration information includes at least one of:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

Optionally, the obtaining, based on a predefined rule, a time parameter of the PDCCH repeated transmission includes:

determining the period, the offset and/or the duration of the target search space as the time parameter of the repeated transmission of the PDCCH;

the target search space comprises any one of the following:

The search space with the lowest search space index in the association relation;

the search space with the highest search space index in the association relation;

a search space where a first candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

a search space where a second candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is provided;

and the search space with the lowest index or the highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relation.

Optionally, the obtaining, based on a predefined rule, a time parameter of the PDCCH repeated transmission includes:

determining a default period as a period value of the PDCCH repeated transmission; or,

and determining a default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

Optionally, the determining the range of the candidate PDCCH to be monitored based on the association relationship and the time parameter includes:

and determining the monitoring resource which is determined by the association relation and the time parameter together as the range of the candidate PDCCH to be monitored.

It should be noted here that, the terminal side embodiment of the present application can implement the method steps that can be implemented by the terminal side method embodiment, and can achieve the same technical effects, and no detailed description is given here.

Fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present application, which includes a memory 420, a transceiver 400, and a processor 410.

Wherein in fig. 4, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 410 and various circuits of memory represented by memory 420, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 400 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 410 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 410 in performing operations.

The processor 410 may be a Central Processing Unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), or it may employ a multi-core architecture.

A memory 420 for storing a computer program; a transceiver 400 for transceiving data under the control of the processor; a processor 410 for reading the computer program in the memory and performing the following operations:

and sending configuration information to the terminal, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission.

Optionally, the method further comprises:

sending the time parameter of the PDCCH repeated transmission to the terminal through the configuration information; and/or, based on a predefined rule, obtaining a time parameter of the PDCCH repeated transmission.

Optionally, the association relationship includes at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

At least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

Optionally, the time parameter sent by the configuration information includes at least one of:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

Optionally, the obtaining, based on a predefined rule, a time parameter of the PDCCH repeated transmission includes:

determining the period, the offset and/or the duration of the target search space as the time parameter of the repeated transmission of the PDCCH;

the target search space comprises any one of the following:

the search space with the lowest search space index in the association relation;

the search space with the highest search space index in the association relation;

a search space where a first candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

a search space where a second candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is provided;

And the search space with the lowest index or the highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relation.

Optionally, the obtaining, based on a predefined rule, a time parameter of the PDCCH repeated transmission includes:

determining a default period as a period value of the PDCCH repeated transmission;

and determining a default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

It should be noted that, the embodiment of the network side device side of the present application can implement the method steps that can be implemented by the embodiment of the network side device side method, and can achieve the same technical effects, and no detailed description is given here.

Fig. 5 is a block diagram of a control channel monitoring apparatus according to an embodiment of the present application, where the apparatus includes:

a receiving module 501, configured to receive configuration information sent by a network side device, where an association relationship between transmission resources of at least two candidate physical downlink control channels PDCCHs is configured in the configuration information, where the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

a determining module 502, configured to determine a range of PDCCH candidates to be monitored based on the association relationship.

Optionally, the method further comprises:

the acquisition module is used for acquiring the time parameters of the PDCCH repeated transmission;

the determining module is further configured to determine a range of PDCCH candidates to be monitored based on the association relationship and the time parameter.

Optionally, the association relationship includes at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

Optionally, when there are a plurality of configured association relationships, determining the maximum number of the monitorable association relationships and determining the monitorable association relationships from the plurality of association relationships.

Optionally, after determining the range of the candidate PDCCH to be monitored based on the association relationship, the method further includes:

and determining the range of the monitored PDCCH candidates based on the range of the PDCCH candidates to be monitored.

Optionally, the determining the range of the monitorable candidate PDCCH based on the range of the candidate PDCCH to be monitored includes:

Determining the maximum number of the monitored PDCCH candidates and the monitored PDCCH candidates based on the range of the PDCCH candidates to be monitored;

wherein, two candidate PDCCHs are bound as a monitorable candidate PDCCH or each candidate PDCCH is a monitorable candidate PDCCH.

Optionally, when one of the candidate PDCCHs in the candidate PDCCH combination in the association relationship is in a monitorable state, determining other candidate PDCCHs in the candidate PDCCH combination or a search space in which other candidate PDCCHs are located as a monitorable state; or,

and when one of the corresponding search spaces in at least two search space indexes in the association relation is in a monitorable state, determining the other corresponding search spaces in the at least two search space indexes as the monitorable state.

Optionally, the acquiring module includes:

a first obtaining unit, configured to obtain a time parameter of the PDCCH retransmission based on the configuration information, where the configuration information is configured with the time parameter of the PDCCH retransmission; and/or the number of the groups of groups,

and the second acquisition unit is used for acquiring the time parameter of the PDCCH repeated transmission based on a predefined rule.

Optionally, the time parameter obtained based on the configuration information includes at least one of:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

Optionally, the second obtaining unit is specifically configured to: determining the period, the offset and/or the duration of the target search space as the time parameter of the repeated transmission of the PDCCH;

the target search space comprises any one of the following:

the search space with the lowest search space index in the association relation;

the search space with the highest search space index in the association relation;

a search space where a first candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

a search space where a second candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is provided;

and the search space with the lowest index or the highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relation.

Optionally, the second obtaining unit is specifically configured to: the obtaining, based on a predefined rule, a time parameter of the PDCCH retransmission includes:

determining a default period as a period value of the PDCCH repeated transmission; or,

and determining a default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

Optionally, the determining module is specifically configured to: comprising the following steps:

and determining the monitoring resource which is determined by the association relation and the time parameter together as the range of the candidate PDCCH to be monitored.

Fig. 6 is a block diagram of a control channel monitoring apparatus according to an embodiment of the present application, where the apparatus includes:

and the sending module 601 sends configuration information to the terminal, wherein the configuration information is configured with an association relationship between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission.

Optionally, the method further comprises:

the sending module is also used for sending the time parameter of the PDCCH repeated transmission to the terminal through the configuration information; and/or the number of the groups of groups,

and the acquisition module is used for acquiring the time parameter of the PDCCH repeated transmission based on a predefined rule.

Optionally, the association relationship includes at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

Optionally, the time parameter sent by the configuration information includes at least one of:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

Optionally, the acquiring module is specifically configured to:

determining the period, the offset and/or the duration of the target search space as the time parameter of the repeated transmission of the PDCCH;

the target search space comprises any one of the following:

the search space with the lowest search space index in the association relation;

the search space with the highest search space index in the association relation;

A search space where a first candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

a search space where a second candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is provided;

and the search space with the lowest index or the highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relation.

Optionally, the acquiring module is specifically configured to:

determining a default period as a period value of the PDCCH repeated transmission;

and determining a default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in 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 (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

In another aspect, embodiments of the present application further provide a processor-readable storage medium storing a computer program for causing the processor to perform the method described in 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 storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

As can be seen from the above embodiments, a processor-readable storage medium stores a computer program for causing the processor to execute the above control channel monitoring method.

It will be appreciated by those skilled in the art that 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, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps 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 modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims (26)

1. A method for monitoring a control channel, comprising:

receiving configuration information sent by network side equipment, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

determining the range of the candidate PDCCH to be monitored based on the association relationship;

The association relationship comprises at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

2. The control channel monitoring method according to claim 1, further comprising:

acquiring a time parameter of the PDCCH repeated transmission;

and determining the range of the candidate PDCCH to be monitored based on the association relationship and the time parameter.

3. The control channel monitoring method according to claim 1, further comprising:

when the configured incidence relation is multiple, determining the maximum number of the incidence relation which can be monitored and determining the incidence relation which can be monitored from the incidence relation.

4. The method for monitoring control channels according to claim 1, wherein after determining the range of PDCCH candidates to be monitored based on the association relationship, further comprises:

And determining the range of the monitored PDCCH candidates based on the range of the PDCCH candidates to be monitored.

5. The control channel monitoring method according to claim 4, wherein the determining a range of monitorable PDCCH candidates based on the range of PDCCH candidates to be monitored comprises:

determining the maximum number of the monitored PDCCH candidates and the monitored PDCCH candidates based on the range of the PDCCH candidates to be monitored;

wherein, two candidate PDCCHs are bound as a monitorable candidate PDCCH or each candidate PDCCH is a monitorable candidate PDCCH.

6. The method for monitoring a control channel according to claim 4, wherein,

when one of the PDCCH candidates in the PDCCH candidate combination in the association relationship is in a monitorable state, determining the other PDCCH candidates in the PDCCH candidate combination or a search space in which the other PDCCH candidates are located as a monitorable state; or,

and when one of the corresponding search spaces in at least two search space indexes in the association relation is in a monitorable state, determining the other corresponding search spaces in the at least two search space indexes as the monitorable state.

7. The method for monitoring control channels according to claim 2, wherein the obtaining the time parameter of PDCCH retransmission comprises:

obtaining the time parameter of the PDCCH repeated transmission based on the configuration information, wherein the time parameter of the PDCCH repeated transmission is configured in the configuration information; and/or the number of the groups of groups,

and obtaining the time parameter of the PDCCH repeated transmission based on a predefined rule.

8. The control channel monitoring method according to claim 7, wherein the time parameter obtained based on the configuration information comprises at least one of:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

9. The method for monitoring control channels according to claim 7, wherein the obtaining the time parameter for the PDCCH retransmission based on the predefined rule comprises:

determining the period, the offset and/or the duration of the target search space as the time parameter of the repeated transmission of the PDCCH;

the target search space comprises any one of the following:

the search space with the lowest search space index in the association relation;

The search space with the highest search space index in the association relation;

a search space where a first candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

a search space where a second candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is provided;

and the search space with the lowest index or the highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relation.

10. The method for monitoring control channels according to claim 7, wherein the obtaining the time parameter for the PDCCH retransmission based on the predefined rule comprises:

determining a default period as a period value of the PDCCH repeated transmission; or,

and determining a default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

11. The method according to any one of claims 2, 7 to 10, wherein the determining the range of PDCCH candidates to be monitored based on the association relation and the time parameter includes:

And determining the monitoring resource which is determined by the association relation and the time parameter together as the range of the candidate PDCCH to be monitored.

12. A method for monitoring a control channel, comprising:

transmitting configuration information to a terminal, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

the association relationship comprises at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

13. The control channel monitoring method according to claim 12, further comprising:

sending the time parameter of the PDCCH repeated transmission to the terminal through the configuration information; and/or the number of the groups of groups,

and obtaining the time parameter of the PDCCH repeated transmission based on a predefined rule.

14. The control channel monitoring method according to claim 13, wherein the time parameter transmitted through the configuration information comprises at least one of:

monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

15. The method for monitoring control channels according to claim 13, wherein the obtaining the time parameter for the PDCCH retransmission based on the predefined rule comprises:

determining the period, the offset and/or the duration of the target search space as the time parameter of the repeated transmission of the PDCCH;

the target search space comprises any one of the following:

the search space with the lowest search space index in the association relation;

the search space with the highest search space index in the association relation;

a search space where a first candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

a search space where a second candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is provided;

And the search space with the lowest index or the highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relation.

16. The method for monitoring control channels according to claim 13, wherein the obtaining the time parameter for the PDCCH retransmission based on the predefined rule comprises:

determining a default period as a period value of the PDCCH repeated transmission;

and determining a default intra-slot monitoring symbol as the intra-slot monitoring symbol of the PDCCH repeated transmission.

17. A terminal comprising a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

receiving configuration information sent by network side equipment, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

determining the range of the candidate PDCCH to be monitored based on the association relationship;

The association relationship comprises at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

18. The terminal of claim 17, further comprising:

acquiring a time parameter of the PDCCH repeated transmission;

and determining the range of the candidate PDCCH to be monitored based on the association relationship and the time parameter.

19. The terminal of claim 18, wherein the obtaining the time parameter for PDCCH retransmission comprises:

obtaining the time parameter of the PDCCH repeated transmission based on the configuration information, wherein the time parameter of the PDCCH repeated transmission is configured in the configuration information; and/or the number of the groups of groups,

and obtaining the time parameter of the PDCCH repeated transmission based on a predefined rule.

20. The terminal of claim 19, wherein the time parameter derived based on the configuration information comprises at least one of:

Monitoring symbols of the PDCCH repeated transmission in one time slot;

monitoring symbols in the search space for repeated transmission;

the period, offset, and/or duration of PDCCH repetition transmissions.

21. The terminal of claim 19, wherein the deriving the time parameter for the PDCCH retransmission based on the predefined rule comprises:

determining the period, the offset and/or the duration of the target search space as the time parameter of the repeated transmission of the PDCCH;

the target search space comprises any one of the following:

the search space with the lowest search space index in the association relation;

the search space with the highest search space index in the association relation;

a search space where a first candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

a search space where a second candidate PDCCH in one candidate PDCCH combination in the association relationship exists;

in the search space with the time slot monitoring opportunity configured in the association relation, the search space with the lowest search space index or the highest search space index is provided;

and the search space with the lowest index or the highest index in all the search spaces where at least two candidate PDCCHs are located in one candidate PDCCH combination in the association relation.

22. A network side device, comprising a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

transmitting configuration information to a terminal, wherein the configuration information is configured with an association relation between transmission resources of at least two candidate Physical Downlink Control Channels (PDCCHs), and the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

the association relationship comprises at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

23. The network-side device of claim 22, further comprising:

sending the time parameter of the PDCCH repeated transmission to the terminal through the configuration information; and/or the number of the groups of groups,

And obtaining the time parameter of the PDCCH repeated transmission based on a predefined rule.

24. A control channel monitoring apparatus, comprising:

a receiving module, configured to receive configuration information sent by a network side device, where the configuration information is configured with an association relationship between transmission resources of at least two candidate physical downlink control channels PDCCHs, where the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

the determining module is used for determining the range of the candidate PDCCH to be monitored based on the association relation;

the association relationship comprises at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

25. A control channel monitoring apparatus, comprising:

a sending module, configured to send configuration information to a terminal, where the configuration information is configured with an association relationship between transmission resources of at least two candidate physical downlink control channels PDCCHs, where the transmission resources of the at least two candidate PDCCHs are used for PDCCH repeated transmission;

The association relationship comprises at least one of the following:

at least one combination of PDCCH candidates, wherein each combination of PDCCH candidates includes the at least two PDCCH candidates therein, and the configuration of each PDCCH candidate includes: at least one of a search space index, a candidate PDCCH index and an aggregation level in which the PDDCH candidate is located;

at least two search space indexes and/or at least one aggregation level;

index and/or aggregation level of the PDCCH candidates;

index of the candidate PDCCH and/or index of the search space.

26. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 11 or to perform the method of any one of claims 12 to 16.