CN114070512B

CN114070512B - Information receiving and transmitting method, equipment and storage medium

Info

Publication number: CN114070512B
Application number: CN202010782862.XA
Authority: CN
Inventors: 王磊; 邢艳萍
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2023-05-02
Anticipated expiration: 2040-08-06
Also published as: CN114070512A

Abstract

The invention discloses an information receiving and transmitting method, equipment and a storage medium, comprising the following steps: determining a transmission pattern of a common downlink control channel according to predefined or explicit indication information of a base station; and the low-capacity terminal detects and receives the public downlink control channel according to the transmission pattern. And the base station transmits the public downlink control channel according to the transmission pattern. By adopting the invention, the existing terminal is not affected on the basis of enhancing the receiving reliability of the low-capacity terminal.

Description

Information receiving and transmitting method, equipment and storage medium

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method and apparatus for receiving and sending information, and a storage medium.

Background

In 5G NR (5G New radio Access technology, 5 ^th Generation, new RAT; RAT: radio Access Technology, radio access technology) system, a common downlink control information is transmitted in a CSS (common search space ), and all terminals in a group or cell are to detect reception. Taking Type0 CSS as an example, the search space is mainly used for transmitting PDCCH (physical downlink control channel ) of scheduling SIB1 (system information block, system Information Block), where the transmission position is bound with SSB (synchronization information block, synchronization Signal Block). Specifically, the specific time domain position of the Type0 CSS transmission is indicated by 8bit information in MIB1 (control information block, master Information Block), and it should be noted that the indication is bound to the time-frequency domain resource position of the SSB, for example, if the time-frequency domain resource position is CORESET (Control resource set) #0 mapping pattern 1, the SSB is multiplexed with coreset#0 in the time domain, and the time-domain listening position of the Type0 CSS is two slots (slots) that are continuous, that is, the base station may select to transmit the Type0 CSS on any one of the two slots. If CORESET#0 maps pattern2, SSB and CORESET#0 are FDM (frequency division multiplexing, frequency division multiplex) +TDM (time division multiplexing, ti) me division multiplexing), and if coreset#0 maps pattern3, SSB and coreset#0 are FDM-mode resource multiplexing. And in the case of pattern2 and pattern3, type0 CSS would be transmitted only within one determined slot.

When detecting and receiving the CSS, the terminal determines the time domain position of detection and reception according to the method.

The prior art has the following defects:

a problem of degradation of reception performance occurs.

Disclosure of Invention

The invention provides an information receiving and transmitting method, equipment and a storage medium, which are used for solving the problem that the receiving performance of a terminal is reduced.

The invention provides the following technical scheme:

an information receiving method, comprising:

the RedCAP terminal determines the transmission pattern of the public downlink control channel according to the predefined or explicit indication information of the base station;

and the RedCAP terminal detects and receives the public downlink control channel according to the transmission pattern.

In practice, further comprising:

and when detecting the common downlink control channel, the RedCAP terminal performs combined reception on the common downlink control channel according to the transmission pattern.

In implementation, the transmission pattern of the common downlink control channel includes L detection receiving positions, where the network side will send DCI with the same content at the L sending positions;

And the RedCAP terminal carries out combined reception on the DCI at the L detection receiving positions.

In an implementation, when the common search space is Type0CSS, for Type0CSS corresponding to one SSB, the time slot used for the transmission pattern is the remaining slot after the slots occupied by Type0CSS corresponding to all other SSBs are removed.

In implementation, other types of terminals detect and receive the common downlink control channel on slot#n according to configuration.

In implementation, the transmission pattern of the common downlink control channel includes one or a combination of the following patterns:

pattern 1, wherein the pattern 1 is a transmission pattern of a public search space of a RedCap terminal when the public search space is transmitted in a specific slot in one transmission period, and is determined as follows:

pattern 1-1, the transmission pattern of pattern 1-1 being within a search space period:

assuming that the monitoring period of the search space is M slots, the monitoring time domain position of the CSS configured by the base station is slot#n, and L < =M, detecting and receiving the public downlink control channel by the RedCAP terminal on the slots #n, slots #n+1 and …, and combining and receiving the public downlink control channel by the slots #n+L-1; or alternatively, the first and second heat exchangers may be,

assuming that the monitoring period of the search space is M slots, the monitoring time domain position of the CSS configured by the base station is slot#n, and L > M, detecting and receiving the public downlink control channel by the RedCAP terminal on the slots #n, slots #n+1 and … and slots #n+M-1, and merging and receiving; or alternatively, the first and second heat exchangers may be,

Assuming that the monitoring period of the search space is M slots, the monitoring time domain position of the CSS configured by the base station is slot#n, and L < = M, and the RedCAP terminal detects and receives the common downlink control channel on slot#n, slot#n+ (floor (M/L)), … and slot#n+L (floor (M/L)), and performs combined reception;

pattern 1-2, the transmission pattern of pattern 1-2 being within a plurality of search space periods:

the transmission pattern is in continuous P monitoring periods;

each monitoring pattern of the CSS does not overlap on resources in each period;

the slots contained in each listening pattern of the CSS are determined in each listening period by:

the number of slots contained in the P continuous monitoring periods is M.P, when the transmission pattern is defined, the monitoring period of each CSS monitoring time domain position slot#n is the first monitoring period, and the like, until the period P is reached;

the monitoring pattern of the CSS can be defined only in the P continuous monitoring periods, and the number of repeated transmission times of the CSS in each period is reduced along with the increase of the period number;

CSS corresponding to different SSBs do not overlap in the time domain;

alternatively, slots included in each listening pattern of the CSS are determined in each listening period by:

The number of slots contained in the P continuous monitoring periods is m×p, and the period in which the monitoring position satisfying mod (n, m×p) =0 is located is the first monitoring period contained in the CSS monitoring pattern, and the serial numbers of the subsequent continuous P periods are 2,3, … and P respectively;

the listening pattern of the CSS can be defined only within the P consecutive listening periods and starts from listening positions satisfying mod (n, m×p) =0;

pattern 2, wherein the pattern 2 is that when a normal terminal transmits a public search space in a specific continuous N slots in a transmission period, N is an integer greater than or equal to 2;

each CSS within the N slots is respectively spread into N downlink control channel transmission patterns as follows:

pattern 2-1, the transmission pattern of pattern 2-1 being within a search space period:

assuming that the monitoring period of the search space is M slots, the monitoring time domain position of the CSS configured by the base station is slot#n, slot#n+1, …, slot#n+n-1, and L < =m, the RedCap terminal detects and receives the common downlink control channel on the slots of the groups of slot { #n, # n+n, # n+2n, …, # n+l #, slot { # n+1, # n+2n+1, …, # n+l # -1}, …, slot { # n+n-1, # n+2n-1, # n+3n-1, …, # n+ (l+1) # N-1, and respectively performs combining and receiving;

Pattern 2-2, the transmission pattern of pattern 2-2 being within a plurality of search space periods:

the transmission pattern is defined in P continuous monitoring periods;

defining the monitoring pattern of the CSS in the P continuous monitoring periods, wherein the number of repeated transmission times of the CSS in each period is reduced along with the increase of the period number;

CSS corresponding to different SSBs do not overlap in the time domain;

the listening pattern of the CSS can only be defined within the P consecutive listening periods and must start from listening positions satisfying mod (n, m×p) =0;

The number of the monitoring positions of the monitoring pattern corresponding to each CSS in the N slots in each period is L/N.

In implementation, for the assumed search space in pattern 1-1, the listening period is M slots, the listening time domain position of the CSS configured by the base station is slot #n, and L < =m, and the RedCap terminal detects and receives the common downlink control channel on the slots #n, slots #n+1, …, slots #n+l-1, and performs combined reception, including one of the following constraints or a combination thereof:

in the TDD scenario, the defined range of the CSS listening pattern cannot exceed the transmission period of the CSS;

if a plurality of SSBs exist in the system, the slots defining the transmission pattern are the residual slots after the corresponding CSS transmission slots of other SSBs are removed.

In implementation, for the assumed search space in pattern 1-1, the listening period is M slots, the listening time domain position of the CSS configured by the base station is slot#n, and L < =m, and the RedCap terminal detects and receives the common downlink control channel on slot#n, slot#n+ (floor (M/L)), …, slot#n+2 (floor (M/L)), and performs combined reception, including one or a combination of the following constraints:

If a plurality of SSBs exist in the system, the slots defining the transmission pattern are the residual slots after the corresponding CSS transmission slots of other SSBs are removed;

the CSS corresponding to different SSBs do not overlap in the time domain.

In practice, the listening pattern for the CSS in pattern 1-2 can only be defined within the P consecutive listening periods, and starting from a listening position satisfying mod (n, M x P) =0, further comprises one or a combination of the following constraints:

if the Redcap monitors the PDCCH at the monitoring position which does not meet mod (n, M x P) =0, the PDCCH at the monitoring position is considered to have no corresponding monitoring pattern, and the merging and receiving are not tried;

if a plurality of SSBs exist in the system, the slots defining the transmission pattern are the residual slots after other SSBs corresponding to CSS transmission slots are planed in the P continuous monitoring periods;

the CSS corresponding to different SSBs do not overlap in the time domain.

In implementation, for the assumed search space in pattern 2-1, the listening period is M slots, the listening time domain positions of the CSS configured by the base station are slot#n, slot#n+1, …, slot#n+n-1, and L < =m, and the RedCap terminal detects and receives the common downlink control channel on the slots of the slots { #n, # N, # n+2n, …, # n+n #, slot { 1, # n+1, # n+2n+1, …, # n+l # -1}, …, slot { n+n-1, # n+2n-1, # n+3N-1, …, # n+ (l+1) # N-1} group slots, and performs combined reception respectively; further comprising one or a combination of the following constraints:

The offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

In implementation, for the number of slots included in P continuous monitoring periods in pattern 2-2 being m×p, when defining the transmission pattern, a monitoring period in which each CSS monitors a time domain position slot#n is a first monitoring period, and so on, until period P; including one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

In implementation, for the number of listening positions of the listening pattern corresponding to each CSS in the N slots in the pattern 2-2 in each period is L/N, and when the L/N is not an integer, a rounding operation is performed.

An information transmission method, comprising:

the base station determines the transmission pattern of the public downlink control channel according to predefined or explicit indication information of the base station;

and the base station transmits the public downlink control channel according to the transmission pattern.

In implementation, the transmission pattern of the common downlink control channel includes L detection receiving positions, where the base station will send DCI with the same content at the L sending positions.

In practice, further comprising:

and for other types of terminals, transmitting the common downlink control channel on slot#n according to configuration.

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the CSS corresponding to different SSBs do not overlap in the time domain.

The offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

A RedCap terminal, comprising:

a processor for reading the program in the memory, performing the following process:

determining a transmission pattern of a common downlink control channel according to predefined or explicit indication information of a base station;

Detecting and receiving the public downlink control channel according to the transmission pattern;

and a transceiver for receiving and transmitting data under the control of the processor.

In practice, further comprising:

and when the common downlink control channel is detected, carrying out combined reception on the common downlink control channel according to the transmission pattern.

and combining and receiving the DCI at the L detection receiving positions.

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the CSS corresponding to different SSBs do not overlap in the time domain.

the offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

An information receiving apparatus comprising:

a RedCap terminal determining module, configured to determine a transmission pattern of a common downlink control channel according to predefined or explicit indication information of a base station;

and the RedCAP terminal receiving module is used for detecting and receiving the public downlink control channel according to the transmission pattern.

A base station, comprising:

Transmitting the public downlink control channel according to the transmission pattern;

In practice, further comprising:

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the CSS corresponding to different SSBs do not overlap in the time domain.

The offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

An information transmitting base station comprising:

the base station determining module is used for determining the transmission pattern of the public downlink control channel according to the predefined or explicit indication information of the base station;

and the base station sending module is used for sending the public downlink control channel according to the transmission pattern.

A computer-readable storage medium storing a computer program for executing the above-described information receiving method and information transmitting method.

The invention has the following beneficial effects:

in the technical scheme provided by the embodiment of the invention, the public downlink control channel transmission pattern is defined for the RedCap terminal, and the base station transmits the public downlink control channel according to the public downlink control channel transmission pattern, and the RedCap terminal performs combined reception on the downlink control channel according to the pattern. Therefore, the transmission pattern of the common downlink control channel does not affect the reception of the common downlink control channel by other terminals. On the basis of enhancing the receiving reliability of the RedCAP terminal, the existing terminal is not affected.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic flow chart of an implementation of an information receiving method at a terminal side in an embodiment of the present invention;

fig. 2 is a schematic flow chart of an implementation of an information sending method at a base station side in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a pattern 1-1 structure 1 according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a pattern 1-1 structure 2 according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a pattern 2-1 according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a pattern structure in embodiment 1 of the present invention;

FIG. 7 is a schematic diagram of a pattern structure in embodiment 3 of the present invention;

FIG. 8 is a schematic diagram of a pattern structure in embodiment 5 of the present invention;

FIG. 9 is a schematic diagram of a pattern structure in embodiment 6 of the present invention;

FIG. 10 is a schematic diagram of a pattern structure in embodiment 7 of the present invention;

FIG. 11 is a schematic diagram of a pattern structure in embodiment 8 of the present invention;

FIG. 12 is a schematic diagram of a pattern structure in embodiment 9 of the present invention;

FIG. 13 is a schematic diagram of a RedCAP terminal structure in an embodiment of the invention;

fig. 14 is a schematic diagram of a base station structure according to an embodiment of the present invention.

Detailed Description

The inventors noted during the course of the invention that:

when the terminal detects and receives the CSS, the time domain position of detection and reception is determined according to the method, but the PDCCH is not combined and received.

In this way, the current downlink control channel detection reception does not have a repeated transmission and combined reception mechanism, and when the number of terminal-side reception antennas is reduced, the reception performance is significantly reduced, resulting in a loss of system performance. On the other hand, the common downlink control channel is detected and received by different types of terminals, so that backward compatibility needs to be ensured. Once CSS is enhanced, the current technology cannot guarantee the detection reception performance of the legacy terminal.

Whereas a 5G system would introduce a Redcap (low capability, reduced Capability) terminal. Terminals of this type may be regarded as terminals with lower capabilities than existing ordinary terminals. In order to reduce the hardware cost, the Redcap terminal may take corresponding measures, such as reducing the supporting bandwidth, reducing the number of receiving antennas, and so on. A reduction in the number of receive antennas will greatly affect the reliability of downstream reception. Meanwhile, in order to reduce complexity of system design, the RedCap terminal needs to access the network through a normal initial access procedure, and needs to receive the same common downlink control channel as the existing terminal. How to improve the reliability of the RedCap terminal to the common downlink control channel on the premise of ensuring backward compatibility, however, no clear scheme exists at present.

Based on this, an information transceiving scheme is provided in the embodiments of the present invention, and a transmission pattern of a common downlink control channel is defined for a RedCap terminal, where the RedCap terminal detects and receives the common downlink control channel according to the transmission pattern of the common downlink control channel.

The following describes specific embodiments of the present invention with reference to the drawings.

In the description process, the description will be made from the implementation of the UE and the base station, respectively, and then an example of the implementation of the cooperation between the UE and the base station will be given to better understand the implementation of the solution given in the embodiment of the present invention. Such a description does not mean that the two must be implemented cooperatively or separately, and in fact, when the UE and the base station are implemented separately, they solve the problems of the UE side and the base station side, respectively, and when the two are used in combination, a better technical effect is obtained.

Fig. 1 is a schematic flow chart of an implementation of an information receiving method at a terminal side, and as shown in the drawing, the implementation includes:

step 101, a RedCap terminal determines a transmission pattern of a common downlink control channel according to predefined or explicit indication information of a base station;

and 102, detecting and receiving the public downlink control channel by the RedCAP terminal according to the transmission pattern.

The RedCap terminal according to the embodiment of the present invention refers to a terminal of the type that can be regarded as a terminal with lower capability than the existing common terminal, but the scheme provided in the embodiment of the present invention may also be used for a terminal type newly introduced in the future, such as a forward advanced terminal, etc., and in practice, the RedCap terminal is taken as an example, because it is currently a more definite name, and the RedCap terminal is taken as an example herein; however, whether other types besides the RedCap terminal need similar characteristics in the future or not, no accurate description or prediction is given, so that the scheme provided in the embodiment of the present invention can be applied to any terminal where the behavior of the existing terminal is not affected and the flexibility of operation can be brought to the future terminal type, and the RedCap terminal is only used for teaching a person skilled in the art how to implement the present invention, but is not meant to be used only for the RedCap terminal, and the implementation process can be combined with practice to need other called terminals.

Fig. 2 is a schematic flow chart of an implementation of an information sending method at a base station side, and as shown in the drawing, the method includes:

step 201, the base station determines a transmission pattern of a public downlink control channel according to predefined or explicit indication information of the base station;

step 202, the base station transmits the public downlink control channel according to the transmission pattern.

Specifically, the RedCap terminal determines the transmission pattern of the common downlink control channel according to predefined or explicit indication information of the base station.

And the base station side repeatedly transmits the downlink control channel according to the public downlink control channel transmission pattern defined above.

The terminal side and the base station side have a correspondence relationship with each other, and thus the description is unified.

In implementation, the transmission pattern of the common downlink control channel is only valid for a specific terminal type, that is, other terminals do not need to detect and receive according to the pattern when detecting and receiving the common downlink control channel.

In practice, the method may further comprise:

In implementation, the transmission pattern of the common downlink control channel includes L detection receiving positions, where the network side will send DCI (downlink control information ) with the same content at the L sending positions;

And the end side of the RedCAP carries out combined reception on the DCI at the L detection receiving positions.

Specifically, the transmission pattern of the common downlink control channel includes L detection receiving positions, that is, the network side transmits DCI of the same content at the L transmission positions, and the RedCap terminal side performs combined reception on the DCI at the L detection receiving positions

Specifically, when the common search space is Type0CSS, for Type0CSS corresponding to one SSB, the transmission pattern defines that the used slot is the remaining slot after the slots occupied by Type0CSS corresponding to all other SSBs are removed.

1) Pattern 1, wherein the pattern 1 is a transmission pattern of a public search space of a RedCap terminal when the public search space is transmitted in a specific slot in one transmission period, and is determined as follows:

(1) FIG. 3 is a schematic diagram of structure 1 of pattern 1-1, as shown in pattern 1-1: the transmission pattern may be defined within the search space period as follows:

A. assuming that the monitoring period of the search space is M slots, the monitoring time domain position of the CSS configured by the base station is slot#n, and L < =M, detecting and receiving the public downlink control channel by the RedCAP terminal on the slots #n, slots #n+1 and …, and combining and receiving the public downlink control channel by the slots #n+L-1;

a) In the TDD scenario, the definition range of the CSS listening pattern cannot exceed the transmission period of the CSS;

b) If a plurality of SSBs exist in the system, the slots defining the transmission pattern are the residual slots after the corresponding CSS transmission slots of other SSBs are removed.

B. Or, assuming that the monitoring period of the search space is M slots, the monitoring time domain position of the CSS configured by the base station is slot#n, and L > M, detecting and receiving the common downlink control channel on the slots #n, slots #n+1, …, and slot #n+m-1 by the RedCap terminal, and performing combined reception, that is, shortening the transmission pattern of the search space according to the transmission period of the search space.

C. Or, as shown in fig. 4, which is a schematic diagram of structure 2 of pattern 1-1, assuming that a listening period of a search space is M slots, a listening time domain position of the CSS configured by a base station is slot#n, and L < =m, and a RedCap terminal detects and receives the common downlink control channel on slot#n+ (floor (M/L)), slot#n+2 (floor (M/L)), …, and slot#n+l (floor (M/L)), and performs combined reception.

b) If a plurality of SSBs exist in the system, the slots defining the transmission pattern are the residual slots after the corresponding CSS transmission slots of other SSBs are removed;

c) The CSS corresponding to different SSBs do not overlap in the time domain.

D. And other types of terminals only detect and receive the common downlink control channel on slot#n according to configuration.

(2) Pattern 1-2: the transmission pattern may be defined as follows over a plurality of search space periods:

A. the transmission pattern is defined in consecutive P listening periods.

B. Each listening pattern of the CSS does not coincide in resources per period.

C. The slots contained in each listening pattern of the CSS are determined in each listening period by:

a) And when the transmission pattern is defined, the monitoring period of each CSS monitoring time domain position slot#n is the first monitoring period, and so on until the period P.

b) The listening pattern of the CSS can only be defined within the P consecutive listening periods, the number of CSS repeated transmissions per period decreasing with increasing period number.

For example, the CSS repeatedly transmits L/2 times in the 1 st period, repeatedly transmits L/4 times in the second period, repeatedly transmits L/8 times in the third period, and repeatedly transmits L and the sum of all the previous repeated times in the P-th period to determine the difference.

If there are multiple SSBs in the system, the number S of SSBs needs to be considered, for example, the CSS repeatedly transmits L/2/S times in the 1 st period, the second period repeatedly transmits L/4/S times, the third period repeatedly transmits L/8/S times, and the sum of the repeated transmissions L and all the previous repetition times in the P-th period is determined by taking the difference.

c) The CSS corresponding to different SSBs do not overlap in the time domain.

D. Alternatively, slots included in each listening pattern of the CSS are determined in each listening period by:

a) And if the number of slots contained in the P continuous monitoring periods is m×p, the period in which the monitoring position satisfying mod (n, m×p) =0 is located is the first monitoring period contained in the CSS monitoring pattern, and the serial numbers of the subsequent continuous P periods are 2,3, … and P respectively.

b) The listening pattern of the CSS can only be defined within the P consecutive listening periods and must start from a listening position satisfying mod (n, m×p) =0.

(a) Further, if the Redcap listens to the PDCCH at the listening position that does not satisfy mod (n, m×p) =0, it is considered that the PDCCH at the listening position has no corresponding listening pattern, and it will not attempt to receive it in a merging manner.

(b) And if a plurality of SSBs exist in the system, the slots defining the transmission pattern are the residual slots after other SSBs corresponding to CSS transmission slots are planed in the P continuous monitoring periods.

(c) The CSS corresponding to different SSBs do not overlap in the time domain.

2) Pattern 2, wherein the pattern 2 is that when a normal terminal transmits a public search space in a specific continuous N slots in a transmission period, N is an integer greater than or equal to 2; that is, DCI may be transmitted on any slot of the N slots, and DCI transmitted in different slots may be different.

(1) Fig. 5 is a schematic diagram of a pattern 2-1, and as shown in fig. 2-1, a transmission pattern of the pattern 2-1 may be defined as follows in a search space period:

Further, the offset value may be any value greater than N, which is not limited in this application;

the CSS corresponding to different SSBs do not overlap in the time domain.

(2) Pattern 2-2: the transmission pattern may be defined as follows over a plurality of search space periods:

the transmission pattern is defined in P continuous monitoring periods;

A. the slots contained in each listening pattern of the CSS are determined in each listening period by:

a) And the number of slots contained in the P continuous monitoring periods is M.P, when the transmission pattern is defined, the monitoring period of each CSS monitoring time domain position slot#n is the first monitoring period, and the like until the period P.

b) The listening pattern of the CSS can only be defined in the P consecutive listening periods, the number of CSS repeated transmissions in each period decreasing with increasing period number.

For example, the CSS repeatedly transmits L/2/N times in the 1 st period, repeatedly transmits L/4/N times in the second period, repeatedly transmits L/8/N times in the third period, and repeatedly transmits L and the sum and difference of all the previous repeated times in the P-th period are determined.

(a) If a plurality of SSBs exist in the system, the slots defining the transmission pattern are the residual slots after other SSBs corresponding to CSS transmission slots are planed in the P continuous monitoring periods;

(b) The CSS corresponding to different SSBs do not overlap in the time domain.

B. Alternatively, slots included in each listening pattern of the CSS are determined in each listening period by:

(b) The CSS corresponding to different SSBs do not overlap in the time domain.

C) The number of the monitoring positions of the monitoring pattern corresponding to each CSS in the N slots in each period is L/N.

When the L/N is not an integer, a rounding operation is required.

The following is illustrated by way of example.

Example 1:

it is assumed that there are different types of terminals within the cell, such as existing terminals of Rel-15/16, and low capability terminals introduced in subsequent versions. In the embodiment, terminals are classified into two types, i.e., a normal terminal (normal UE) and a low capability terminal (RedCap UE) for convenience of description. Of course, the types of the terminals may be performed in other classification manners, which is not limited in this application.

The common downlink control channel sent by the base station side faces all terminals in the cell, namely common terminals and low-capability terminals, to detect and receive. Considering that the low-capability terminal has reduced downlink reception capability due to limitations in terms of cost, size, etc., coverage of the common downlink control channel for the low-capability terminal is reduced. The coverage enhancement scheme for the common downlink control channel of the low-capability terminal cannot influence the reception of the common terminal. In this embodiment, a specific scheme for coverage enhancement of a common downlink control channel for a low-capability terminal is defined, so as to improve detection and reception performance of the downlink control channel. Fig. 6 is a schematic diagram of the pattern structure in embodiment 1, and as shown in the drawing, the common downlink control channel transmission pattern in this embodiment has the following features:

Feature 1: the transmission pattern of the common downlink control channel is only valid for a specific terminal type, which is a low-capability terminal in this embodiment, and other terminals do not need to detect and receive according to the pattern when detecting and receiving the common downlink control channel.

Feature 2: and when the low-capacity terminal detects the common downlink control channel, the low-capacity terminal performs combined reception on the common downlink control channel according to the transmission pattern.

Feature 3: the transmission pattern of the common downlink control channel includes L detection receiving positions, that is, the network side transmits DCI with the same content at the L transmission positions, and the RedCap terminal side performs combined reception on the DCI at the L detection receiving positions. In the present embodiment, it is assumed that l=8.

Feature 4: common terminals transmit in a particular slot only in a single transmission period, and a common downlink control channel transmission pattern for low-capability terminals is defined in a single complete common search space transmission period.

Based on the above features, assuming that the listening period of the search space is m=10 slots, the listening time domain positions of the CSS configured by the base station are slot { #n, #n+10, #n+20, … }, and the RedCap terminal detects and receives the common downlink control channel on the slots #n, slot #n+1, … and slot #n+7 slots, and performs combined reception.

For other terminals, the common downlink control channel is monitored on slot#n, slot#n+10, slot#n+20 …, still according to the configuration of the CSS.

When the network side sends the common downlink control channel, the downlink control channel sent in each transmission pattern for the RedCap terminal is the same, namely, DCI format (DCI format), AL (aggregation level ), PDCCH candidate (PDCCH candidate), and the like, so that the RedCap terminal performs combined reception on all PDCCHs in the transmission pattern.

Example 2:

in the scheme of embodiment 1, if the number of slots or the time domain duration included in the transmission pattern of the common downlink control channel is greater than the transmission period of the CSS, the pattern is truncated according to the CSS period.

Taking FDD as an example, assuming that the transmission period of the CSS is 20 slots, and the adopted CSS transmission pattern contains 40 slots, the transmission pattern of the CSS is finally truncated to contain only 20 slots.

Example 3:

The common downlink control channel sent by the base station side faces all terminals in the cell, namely common terminals and low-capability terminals, to detect and receive. Considering that the low-capability terminal has reduced downlink reception capability due to limitations in terms of cost, size, etc., coverage of the common downlink control channel for the low-capability terminal is reduced. The coverage enhancement scheme for the common downlink control channel of the low-capability terminal cannot influence the reception of the common terminal. In this embodiment, a specific scheme for coverage enhancement of a common downlink control channel for a low-capability terminal is defined, so as to improve detection and reception performance of the downlink control channel. Fig. 7 is a schematic diagram of the pattern structure in embodiment 3, and as shown in the drawing, the common downlink control channel transmission pattern in this embodiment has the following features:

Feature 3: the transmission pattern of the common downlink control channel includes L detection receiving positions, that is, the network side transmits DCI with the same content at the L transmission positions, and the RedCap terminal side performs combined reception on the DCI at the L detection receiving positions. In the present embodiment, it is assumed that l=4.

Based on the above features, assuming that the listening period of the search space is 10 slots, the listening time domain position of the CSS configured by the base station is slot#n, and l=4, and the redcap terminal detects and receives the common downlink control channel on slot#n, slot#n+2, slot#n+4, …, and slot#n+6, and performs combined reception.

When the network side sends the common downlink control channel, the downlink control channels sent in each transmission pattern for the RedCap terminal are the same, namely DCI format, AL, PDCCH transmitting and the like, so that the RedCap terminal can combine and receive all PDCCHs in the transmission pattern.

Example 4:

in the scheme of embodiment 3, if the number of slots or the time-domain duration included in the transmission pattern of the common downlink control channel is greater than the transmission period of the CSS, the pattern is truncated according to the CSS period.

Example 5:

The common downlink control channel sent by the base station side faces all terminals in the cell, namely common terminals and low-capability terminals, to detect and receive. Considering that the low-capability terminal has reduced downlink reception capability due to limitations in terms of cost, size, etc., coverage of the common downlink control channel for the low-capability terminal is reduced. The coverage enhancement scheme for the common downlink control channel of the low-capability terminal cannot influence the reception of the common terminal. In this embodiment, a specific scheme for coverage enhancement of a common downlink control channel for a low-capability terminal is defined, so as to improve detection and reception performance of the downlink control channel. Fig. 8 is a schematic diagram of the pattern structure in embodiment 5, and as shown in the drawing, the common downlink control channel transmission pattern in this embodiment has the following features:

Feature 4: common terminals transmit in a transmission period in a specific slot only, and a common downlink control channel transmission pattern for low-capability terminals is defined in P complete common search space transmission periods.

Based on the above features, the slots included in each listening pattern of the CSS are determined in each listening period by assuming that the listening period is m=10 slots, and the number of slots included in p=3 consecutive listening periods is 10×2=20, then the period number where the CSS transmission position slot#n is located is 1, the next period number is 2, and the next period number is 3.

The listening pattern of the CSS can be defined only in the p=3 consecutive listening periods, and the number of CSS repeated transmissions in each period decreases with an increase in period number, for example, CSS repeated transmissions 8/2 times in the 1 st period, repeated transmissions 8/4 times in the second period, and repeated transmissions 8-4-2=2 times in the third period, as a specific example.

Specifically, in the definition of the RedCap UE CSS transmission pattern shown in the above figure, slot positions occupied by each pattern in different periods are not limited in this application. For example, the location of the first CSS listening period may be determined by means of protocol predefining or network side configuration, and consecutive periods are numbered in sequence. And determining the specific position of the slot occupied by each pattern in each period according to the number. In this embodiment, the CSS transmission pattern occupies the first 4 slots in the first period, occupies two slots #4, #5 in the second period, and occupies two slots #6, #7 in the third period. Other allocation and determination methods are not limited in any way herein.

Example 6:

The common downlink control channel sent by the base station side faces all terminals in the cell, namely common terminals and low-capability terminals, to detect and receive. Considering that the low-capability terminal has reduced downlink reception capability due to limitations in terms of cost, size, etc., coverage of the common downlink control channel for the low-capability terminal is reduced. The coverage enhancement scheme for the common downlink control channel of the low-capability terminal cannot influence the reception of the common terminal. In this embodiment, a specific scheme for coverage enhancement of a common downlink control channel for a low-capability terminal is defined, so as to improve detection and reception performance of the downlink control channel. Fig. 9 is a schematic diagram of the pattern structure in embodiment 6, and as shown in the drawing, the common downlink control channel transmission pattern in this embodiment has the following features:

Feature 4: common terminals transmit in a transmission period only in a specific slot, and a common downlink control channel transmission pattern for low capability terminals is defined in p=2 complete common search space transmission periods.

Based on the above features, slots contained in each listening pattern of the CSS are determined in each listening period by: assuming that the listening period is m=10 slots and the number of slots included in p=2 consecutive listening periods is 20, the period where the listening position satisfying mod (n, m×p) =0 is the first listening period included in the CSS listening pattern, and the subsequent consecutive P period numbers are 2,3, …, P, respectively, where the listening pattern of the CSS can only be defined in the P consecutive listening periods, and it is necessary to start from the listening position satisfying mod (n, m×p) =0. That is, the RedCap terminal performs combining reception only according to the transmission pattern corresponding to the CSS at the listening position satisfying mod (n, m×p) =0, and does not perform combining reception for the PDCCH transmitted at the other position not satisfying the condition, and it is considered that there is no corresponding pattern.

Further, slots constituting the CSS transmission pattern may be continuous or discrete, and are not limited in this application.

Example 7:

The common downlink control channel sent by the base station side faces all terminals in the cell, namely common terminals and low-capability terminals, to detect and receive. Considering that the low-capability terminal has reduced downlink reception capability due to limitations in terms of cost, size, etc., coverage of the common downlink control channel for the low-capability terminal is reduced. The coverage enhancement scheme for the common downlink control channel of the low-capability terminal cannot influence the reception of the common terminal. In this embodiment, a specific scheme for coverage enhancement of a common downlink control channel for a low-capability terminal is defined, so as to improve detection and reception performance of the downlink control channel. Fig. 10 is a schematic diagram of the pattern structure in embodiment 7, and as shown in the drawing, the common downlink control channel transmission pattern in this embodiment has the following features:

Feature 4: a common terminal transmits a common search space in N slots in a transmission period, that is, DCI may be transmitted on any slot in the N slots. And the DCI transmitted in different slots may be different. The transmission pattern of the public downlink control channel aiming at the low-capacity terminal is defined in a complete public search space transmission period, N public downlink control channel transmission patterns are defined by each slot of the N slots, and N is an integer greater than or equal to 2.

Based on the above features, it is assumed that the listening period of the search space is m=20 slots, and the duration of the common search space is n=2 slots, that is, the network side may send the common downlink control channel in any one of two consecutive slots, and DCI sent on each slot may be different. And the monitoring time domain positions of the CSS configured by the base station are slot { # n & n+1, # n+20& n+21, # n+40& n+41, … }, and the RedCAP terminal detects and receives the common downlink control channel on { slot#n, slot#n+2, slot#n+4 …, slot#n+14} and { slot#n+1, slot#n+3, slot#n+5 …, slot#n+15}, and performs combined reception.

For other terminals, the common downlink control channel is monitored on two consecutive slots still according to the configuration of the CSS.

Example 8:

The common downlink control channel sent by the base station side faces all terminals in the cell, namely common terminals and low-capability terminals, to detect and receive. Considering that the low-capability terminal has reduced downlink reception capability due to limitations in terms of cost, size, etc., coverage of the common downlink control channel for the low-capability terminal is reduced. The coverage enhancement scheme for the common downlink control channel of the low-capability terminal cannot influence the reception of the common terminal. In this embodiment, a specific scheme for coverage enhancement of a common downlink control channel for a low-capability terminal is defined, so as to improve detection and reception performance of the downlink control channel. Fig. 11 is a schematic diagram of the pattern structure in embodiment 8, and as shown in the drawing, the common downlink control channel transmission pattern in this embodiment has the following features:

Feature 3: the transmission pattern of the common downlink control channel includes L detection receiving positions, that is, the network side transmits DCI with the same content at the L transmission positions, and the RedCap terminal side performs combined reception on the DCI at the L detection receiving positions. In the present embodiment, it is assumed that l=10.

Feature 4: a common terminal transmits a common search space in N slots in a transmission period, that is, DCI may be transmitted on any slot in the N slots. And the DCI transmitted in different slots may be different. The transmission pattern of the public downlink control channel aiming at the low-capacity terminal is defined in the continuous P complete public search space transmission periods, N public downlink control channel transmission patterns are defined by each slot of the N slots, and N is an integer greater than or equal to 2.

Based on the above features, it is assumed that the listening period of the search space is m=20 slots, and the duration of the common search space is n=2 slots, that is, the network side may send the common downlink control channel in any one of two consecutive slots, and DCI sent on each slot may be different. A simple example is shown in the following figure, where defined time ranges for different RedCap UE CSS transmission patterns overlap.

Specifically, in the definition of the RedCap UE CSS transmission pattern shown in the above figure, slot positions occupied by each pattern in different periods are not limited in this application. For example, the location of the first CSS listening period may be determined by means of protocol predefining or network side configuration, and consecutive periods are numbered in sequence. And determining the specific position of the slot occupied by each pattern in each period according to the number. In this embodiment, the CSS transmission pattern transmitted in the nth slot occupies slots { #n, #n+2, #n+4, #n+6, #n+8} in the first period, and occupies slots { #n+11, #n+13, #n+15, #n+17, #n+19} in the second period; the CSS transmission pattern transmitted at the n+1th slot occupies slots { #n+1, #n+3, #n+5, #n+7, #n+9} in the first period, and occupies slots { #n+12, #n+14, #n+16, #n+18, #n+20} in the second period. Other allocation and determination methods are not limited in any way herein.

Example 9:

The common downlink control channel sent by the base station side faces all terminals in the cell, namely common terminals and low-capability terminals, to detect and receive. Considering that the low-capability terminal has reduced downlink reception capability due to limitations in terms of cost, size, etc., coverage of the common downlink control channel for the low-capability terminal is reduced. The coverage enhancement scheme for the common downlink control channel of the low-capability terminal cannot influence the reception of the common terminal. In this embodiment, a specific scheme for coverage enhancement of a common downlink control channel for a low-capability terminal is defined, so as to improve detection and reception performance of the downlink control channel. Fig. 12 is a schematic diagram of the pattern structure in embodiment 9, and as shown in the drawing, the common downlink control channel transmission pattern in this embodiment has the following features:

Feature 3: the transmission pattern of the common downlink control channel includes L detection receiving positions, that is, the network side transmits DCI with the same content at the L transmission positions, and the RedCap terminal side performs combined reception on the DCI at the L detection receiving positions. In the present embodiment, it is assumed that l=16.

Based on the above features, the transmission pattern of the common downlink control channel is defined as follows: p=2 consecutive listening periods comprise 20×2=40 slots, and when defining the transmission pattern, each CSS listens to the listening periods where the time domain positions slot#n and slot#n+1 are located is the first listening period, and so on until period P, i.e. p=2, the listening pattern of the CSS can only be defined in the 2 consecutive listening periods and must start from the listening position satisfying mod (n, 40) =0. The number of listening positions of the listening pattern corresponding to each CSS in the N slots in each period is L/N, and in this embodiment, the number is 8.

Based on the above features, slots contained in each listening pattern of the CSS are determined in each listening period by: assuming that the listening period is m=20 slots and the number of slots contained in p=2 consecutive listening periods is 40, the period where the listening position satisfying mod (n, m×p) =0 is the first listening period contained in the CSS listening pattern, and the subsequent consecutive P period numbers are 2,3, …, and P, respectively. The listening pattern of the CSS can only be defined within the P consecutive listening periods and must start from a listening position satisfying mod (n, m×p) =0.

That is, the RedCap terminal performs combining reception only according to the transmission pattern corresponding to the CSS at the listening position satisfying mod (n, m×p) =0, and does not perform combining reception for the PDCCH transmitted at the other position not satisfying the condition, and it is considered that there is no corresponding pattern. For example, for the common downlink control channel transmitted on the first slot and the second slot in the second period of the upper graph, the terminal side does not attempt to combine with the PDCCH at other positions for reception.

Further, when the L/N is not an integer, a rounding operation is required.

Example 10:

as in the schemes of embodiments 1-7, if there are multiple SSBs in the system, each SSB will correspond to a transmission location of one CSS. At this time, the definition range of the CSS transmission patterns described in embodiments 1-7 (i.e. which slots need to be defined in) is the slots remaining after the CSS corresponding to all other SSBs are removed.

Also, it is necessary that CSS corresponding to different SSBs should not have any overlap in the time domain.

The defining manner is as described in embodiments 1-7, and this embodiment will not be described again.

Based on the same inventive concept, the embodiments of the present invention further provide a base station, a RedCap terminal, and a computer readable storage medium, and because the principles of solving the problems of these devices are similar to those of the information receiving method and the information transmitting method, the implementation of these devices can refer to the implementation of the method, and the repetition is omitted.

In implementing the technical scheme provided by the embodiment of the invention, the method can be implemented as follows.

Fig. 13 is a schematic diagram of a RedCap terminal structure, as shown, including:

processor 1300, for reading the program in memory 1320, performs the following procedure:

a transceiver 1310 for receiving and transmitting data under the control of the processor 1300.

In practice, further comprising:

and combining and receiving the DCI at the L detection receiving positions.

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

The CSS corresponding to different SSBs do not overlap in the time domain.

the CSS corresponding to different SSBs do not overlap in the time domain.

The offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

Where in FIG. 13, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, specifically represented by processor 1300, and the memory, represented by memory 1320, being 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. The transceiver 1310 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1330 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 1300 is responsible for managing the bus architecture and general processing, and the memory 1320 may store data used by the processor 1300 in performing operations.

The embodiment of the invention also provides an information receiving device, which comprises:

Specific implementations can be seen from implementations of the information receiving method at the end of the RedCap.

For convenience of description, the parts of the above apparatus are described as being functionally divided into various modules or units, respectively. Of course, the functions of each module or unit may be implemented in the same piece or pieces of software or hardware when implementing the present invention.

Fig. 14 is a schematic diagram of a base station, and as shown in the drawing, includes:

processor 1400, for reading the program in memory 1420, performs the following process:

A transceiver 1410 for receiving and transmitting data under the control of the processor 1400.

In practice, further comprising:

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the CSS corresponding to different SSBs do not overlap in the time domain.

The offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

Wherein in fig. 14, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1400 and various circuits of the memory represented by the memory 1420, 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. The transceiver 1410 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The embodiment of the invention also provides an information sending base station, which comprises:

The implementation of the information transmission method at the base station side can be seen.

The embodiment of the invention also provides a computer readable storage medium which stores a computer program for executing the information receiving method and the information sending method.

Specific reference may be made to implementation of the information receiving method at the RedCap terminal side and/or the information transmitting method at the base station side.

In summary, in the technical solution provided in the embodiment of the present invention, a common downlink control channel transmission pattern is defined for a RedCap terminal, and the RedCap terminal performs combining and receiving on the downlink control channel according to the pattern.

The transmission pattern of the common downlink control channel does not affect the reception of the common downlink control channel by other terminals.

And the base station transmits a common downlink control channel according to the common downlink control channel transmission pattern.

The scheme defines the time domain pattern of the public downlink control channel transmission, and does not influence the existing terminal on the basis of enhancing the receiving reliability of the RedCAP terminal.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. 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 program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

These computer program 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 to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. An information receiving method, comprising:

the low-capability RedCAP terminal determines the transmission pattern of the public downlink control channel according to the predefined or explicit indication information of the base station;

detecting and receiving the public downlink control channel by the RedCAP terminal according to the transmission pattern;

when the common search space is the Type0 common search space CSS, for the Type0 CSS corresponding to one synchronization information block SSB, the time slot used by the transmission pattern is the remaining slot after the time slot occupied by the Type0 CSS corresponding to all other SSBs is planed.

2. The method as recited in claim 1, further comprising:

3. The method of claim 2, wherein the transmission pattern of the common downlink control channel includes L detection reception positions, and wherein the network side is to transmit downlink control information DCI of the same content at the L transmission positions;

4. The method of claim 1, wherein other types of terminals detect reception of the common downlink control channel as configured on slot #n.

5. The method according to any of claims 1 to 4, wherein the transmission pattern of the common downlink control channel comprises one or a combination of the following patterns:

pattern 1, wherein the pattern 1 is a transmission pattern of a public search space of a RedCap terminal when the public search space of a normal terminal is transmitted in a specific slot in one transmission period, and is determined as follows:

Pattern 1-2, the detected receive pattern of pattern 1-2 being within a plurality of search space periods:

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

pattern 2-1, the detected received pattern of pattern 2-1 being within a search space period:

pattern 2-2, the detected receive pattern of pattern 2-2 being within a plurality of search space periods:

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

6. The method of claim 5, wherein for a hypothetical search space in pattern 1-1 with a listening period of M slots, a listening time domain position of the CSS configured by a base station is slot #n, and L < = M, the RedCap terminal detects and receives the common downlink control channel on slot #n, slot #n+1, …, slot #n+l-1 slots, and performs combined reception, including one or a combination of the following constraints:

if a plurality of SSBs exist in the system, the slots defining the transmission pattern are the remaining slots after the corresponding CSS transmission slots of other SSBs are removed.

7. The method of claim 5, wherein for a hypothetical search space in pattern 1-1 with a listening period of M slots, a listening time domain position of the CSS configured by a base station is slot #n, and L < = M, and the RedCap terminal detects and receives the common downlink control channel on slot #n, slot #n+ (floor (M/L)), slot #n+2 x (floor (M/L)), …, slot #n+l (floor (M/L)), and performs combined reception, including one of the following constraints or a combination thereof:

in the time division multiplexing TDD scenario, the definition range of the CSS listening pattern cannot exceed the transmission period of the CSS;

If a plurality of SSBs exist in the system, defining slots of the transmission pattern as residual slots after the corresponding CSS transmission slots of other SSBs are removed;

the CSS corresponding to different SSBs do not overlap in the time domain.

8. The method of claim 5, wherein listening patterns for the CSS in patterns 1-2 can only be defined for the P consecutive listening periods, and starting from listening positions satisfying mod (n, M x P) = 0, further comprising one or a combination of the following constraints:

if the Redcap monitors the Physical Downlink Control Channel (PDCCH) at a monitoring position which does not meet mod (n, M.times.P) =0, the PDCCH at the monitoring position is considered to have no corresponding monitoring pattern, and the combination reception is not attempted;

if a plurality of SSBs exist in the system, defining slots of the transmission pattern as residual slots after other SSBs corresponding to CSS transmission slots are planed in the P continuous monitoring periods;

the CSS corresponding to different SSBs do not overlap in the time domain.

9. The method of claim 5, wherein for a listening period of the assumed search space in pattern 2-1 is M slots, a listening time domain position of the CSS configured by the base station is slot#n, slot#n+1, …, slot#n+n-1, and L < = M, the RedCap terminal detects and receives the common downlink control channel on a group of slot { #n, #n+n, # n+2n, …, # n+l+n }, slot { # n+1, # n+n+1, # n+2n+1, …, # n+l+1 }, …, slot { # n+n-1, # n+2n-1, # n+3n-1, …, # n+ (l+1) # N-1, and performs combined reception, respectively; further comprising one or a combination of the following constraints:

The offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

10. The method of claim 5, wherein for P consecutive listening periods in pattern 2-2, the number of slots included is M x P, and when defining the transmission pattern, the listening period in which each CSS listens to time domain location slot#n is located is the first listening period, and so on, until period P; including one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

11. The method of claim 5, wherein for each CSS in the N slots in pattern 2-2, the number of listening positions of the listening pattern corresponding to each cycle is L/N, and when the L/N is not an integer, a rounding operation is performed.

12. An information transmission method, comprising:

The base station transmits the public downlink control channel according to the transmission pattern;

when the common search space is Type0 CSS, for Type0 CSS corresponding to one SSB, the time slot used by the transmission pattern is the residual slot after the slots occupied by the Type0 CSS corresponding to all other SSB are planed.

13. The method of claim 12, wherein the transmission pattern of the common downlink control channel comprises L detected reception locations, wherein the base station is to transmit DCI of the same content on the L transmission locations.

14. The method as recited in claim 12, further comprising:

15. A method according to any one of claims 12 to 14, wherein the transmission pattern of the common downlink control channel comprises one or a combination of the following patterns:

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

16. The method of claim 15, wherein for a hypothetical search space in pattern 1-1 with a listening period of M slots, a listening time domain position of the CSS configured by a base station is slot #n, and L < = M, the RedCap terminal detects and receives the common downlink control channel on slot #n, slot #n+1, …, slot #n+l-1 slots, and performs combined reception, including one or a combination of the following constraints:

17. The method of claim 15, wherein for a hypothetical search space in pattern 1-1 with a listening period of M slots, a listening time domain position of the CSS configured by the base station is slot #n, and L < = M, and the RedCap terminal detects and receives the common downlink control channel on slot #n, slot #n+ (floor (M/L)), slot #n+2 x (floor (M/L)), …, slot #n+l (floor (M/L)), and performs combined reception, including one of the following constraints or a combination thereof:

the CSS corresponding to different SSBs do not overlap in the time domain.

18. The method of claim 15, wherein listening patterns for the CSS in patterns 1-2 can only be defined for the P consecutive listening periods, and starting from listening positions satisfying mod (n, M x P) =0, further comprising one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

19. The method of claim 15, wherein for a listening period of the assumed search space in pattern 2-1 is M slots, a listening time domain position of the CSS configured by the base station is slot#n, slot#n+1, …, slot#n+n-1, and L < = M, the RedCap terminal detects and receives the common downlink control channel on a group of slot { #n, #n+n, #n+2n, …, #n+l+n }, slot { #n+1, #n+n+1, #n+2n+1, …, #n+l+n+1 }, …, slot { #n+n-1, #n+2n-1, #n+3n-1, …, #n+ (l+1) ×n-1, and performs combined reception, respectively; further comprising one or a combination of the following constraints:

the offset value is any value greater than N;

The CSS corresponding to different SSBs do not overlap in the time domain.

20. The method of claim 15, wherein for P consecutive listening periods in pattern 2-2, the number of slots included is M x P, and when defining the transmission pattern, the listening period in which each CSS listens to time domain location slot#n is located is the first listening period, and so on, until period P; including one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

21. The method of claim 15, wherein for each CSS corresponding listening pattern in the N slots in pattern 2-2, the number of listening positions in each cycle is L/N, and when the L/N is not an integer, a rounding operation is performed.

22. A RedCap terminal, comprising:

A transceiver for receiving and transmitting data under the control of the processor;

23. The terminal of claim 22, further comprising:

24. The terminal of claim 23, wherein the transmission pattern of the common downlink control channel includes L detection reception locations, wherein the network side is to transmit DCI of the same content at the L transmission locations;

and combining and receiving the DCI at the L detection receiving positions.

25. The terminal of claim 22, wherein other types of terminals detect reception of the common downlink control channel in accordance with a configuration on slot #n.

26. A terminal according to any of claims 22 to 25, wherein the transmission pattern of the common downlink control channel comprises one or a combination of the following patterns:

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

27. The terminal of claim 26, wherein for a hypothetical search space in pattern 1-1 with a listening period of M slots, a listening time domain position of the CSS configured by a base station is slot #n, and L < = M, the RedCap terminal detects and receives the common downlink control channel on slot #n, slot #n+1, …, slot #n+l-1 slots, and performs combined reception, including one or a combination of the following constraints:

28. The terminal of claim 26, wherein for a hypothetical search space in pattern 1-1, the listening time domain position of the CSS configured by the base station is slot #n, and L < = M, and the RedCap terminal detects and receives the common downlink control channel on slot #n, slot #n+ (floor (M/L)), slot #n+2 x (floor (M/L)), …, slot #n+l (floor (M/L)), and performs combining and receiving, including one of the following constraints or a combination thereof:

the CSS corresponding to different SSBs do not overlap in the time domain.

29. The terminal of claim 26, wherein a listening pattern for the CSS in patterns 1-2 can be defined only for the P consecutive listening periods and starting from a listening position satisfying mod (n, M x P) =0, further comprising one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

30. The terminal of claim 26, wherein for a listening period of the assumed search space in pattern 2-1 is M slots, a listening time domain position of the CSS configured by the base station is slot#n, slot#n+1, …, slot#n+n-1, and L < = M, the RedCap terminal detects and receives the common downlink control channel on a group of slot { #n, #n+n, #n+2n, …, #n+l+n }, slot { #n+1, #n+n+1, #n+2n+1, …, #n+l+n+1 }, …, slot { #n+n-1, #n+2n-1, #n+3n-1, …, #n+ (l+1) ×n-1, and performs combined reception, respectively; further comprising one or a combination of the following constraints:

the offset value is any value greater than N;

The CSS corresponding to different SSBs do not overlap in the time domain.

31. The terminal of claim 26, wherein for P consecutive listening periods in pattern 2-2, the number of slots included is M x P, when defining the transmission pattern, the listening period in which each CSS listens to the time domain location slot#n is located is the first listening period, and so on, until period P; including one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

32. The terminal of claim 26, wherein for the number of listening positions of each listening pattern corresponding to each CSS in N slots in pattern 2-2, L/N is used in each period, and when L/N is not an integer, a rounding operation is performed.

33. An information receiving apparatus, comprising:

a RedCap terminal receiving module, configured to detect and receive the common downlink control channel according to the transmission pattern;

When the common search space is Type0CSS, for Type0CSS corresponding to one synchronization information block SSB, the time slot used by the transmission pattern is the remaining slot after the time slot occupied by the Type0CSS corresponding to all other SSBs is removed.

34. A base station, comprising:

when the common search space is Type0CSS, for Type0CSS corresponding to one SSB, the time slot used by the transmission pattern is the residual slot after the slots occupied by the Type0CSS corresponding to all other SSB are planed.

35. The base station of claim 34, wherein the transmission pattern of the common downlink control channel comprises L detected reception locations, wherein the base station is to transmit DCI of the same content on the L transmission locations.

36. The base station of claim 34, further comprising:

37. A base station according to any of claims 34 to 36, wherein the transmission pattern of the common downlink control channel comprises one or a combination of the following patterns:

the transmission pattern is in continuous P monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

the transmission pattern is defined in P continuous monitoring periods;

CSS corresponding to different SSBs do not overlap in the time domain;

38. The base station of claim 37, wherein for a hypothetical search space in pattern 1-1, the listening time domain position of the CSS configured by the base station is slot #n, and L < = M, the RedCap terminal detects and receives the common downlink control channel on slots #n, slot #n+1, …, slot #n+l-1, and performs combined reception, including one of the following constraints or a combination thereof:

39. The base station of claim 37, wherein for a hypothetical search space in pattern 1-1, the listening time domain position of the CSS configured by the base station is slot #n, and L < = M, and the RedCap terminal detects and receives the common downlink control channel on slot #n, slot #n+ (floor (M/L)), slot #n+2 x (floor (M/L)), …, slot #n+l (floor (M/L)), and performs combining and receiving, including one of the following constraints or a combination thereof:

the CSS corresponding to different SSBs do not overlap in the time domain.

40. The base station of claim 37, wherein a listening pattern for the CSS in patterns 1-2 can be defined only for the P consecutive listening periods and starting from a listening position satisfying mod (n, M x P) =0, further comprising one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

41. The base station of claim 37, wherein for a listening period of the assumed search space in pattern 2-1 is M slots, a listening time domain position of the CSS configured by the base station is slot#n, slot#n+1, …, slot#n+n-1, and L < = M, the RedCap terminal detects and receives the common downlink control channel on a group of slot { #n, #n+n, #n+2n, …, #n+l+n }, slot { #n+1, #n+n+1, #n+2n+1, …, #n+l+n+1 }, …, slot { #n+n-1, #n+2n-1, #n+3n-1, …, #n+ (l+1) ×n-1, and performs combined reception, respectively; further comprising one or a combination of the following constraints:

The offset value is any value greater than N;

the CSS corresponding to different SSBs do not overlap in the time domain.

42. The base station of claim 37, wherein for P consecutive listening periods in pattern 2-2, the number of slots included is M x P, when defining the transmission pattern, the listening period in which each CSS listens to time domain location slot#n is located is the first listening period, and so on until period P; including one or a combination of the following constraints:

the CSS corresponding to different SSBs do not overlap in the time domain.

43. The base station of claim 37 wherein the number of listening positions in each period for each listening pattern corresponding to each CSS in N slots in pattern 2-2 is L/N, and when the L/N is not an integer, performing a rounding operation.

44. An information transmitting base station, comprising:

A base station sending module, configured to send the common downlink control channel according to the transmission pattern;

45. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program for executing the method of any one of claims 1 to 21.