CN112954796B

CN112954796B - Transmitting method, receiving method, network equipment and terminal

Info

Publication number: CN112954796B
Application number: CN201911264812.6A
Authority: CN
Inventors: 胡丽洁; 杨拓; 王飞; 夏亮; 张轶; 王启星
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2023-10-27
Anticipated expiration: 2039-12-11
Also published as: CN112954796A; WO2021115361A1

Abstract

The invention provides a sending method, a receiving method, network equipment and a terminal, wherein the transmission method comprises the following steps: transmitting the PDCCH in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB; the detection start time slot of the type0-PDCCH common search space is related to information carried by a Main Information Block (MIB) in the PBCH and a predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, so that the UE can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

Description

Transmitting method, receiving method, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a sending method, a receiving method, a network device, and a terminal.

Background

As the coverage capability of the terminal is shrunk, for example, the terminal receives with a smaller number of antennas, the reception performance is deteriorated, and the coverage is reduced. In order to ensure coverage of such services, a coverage enhancement design is required.

To compensate for the physical broadcast channel (Physical Broadcast Channel, abbreviated PBCH) coverage contraction caused by UE capability reduction, the PBCH transmission can be theoretically doubled by reducing the transmission time interval of PBCH retransmission, for example, the period of the existing default 20ms retransmission time interval is reduced to 10ms, and 3dB coverage enhancement can be achieved by combining.

In the case that the PBCH is increased by more repeated transmissions, the transmission of a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) of type0 (hereinafter referred to as type 0-PDCCH) is also correspondingly increased in coverage, and the detected position is determined for the increased repeated transmission.

However, according to the existing detection start time slot determining formula of the type0-PDCCH, after the number of PBCH retransmissions is increased, the detection start time slots of the type0-PDCCH determined by the PBCHs of the retransmissions are the same, so that the User Equipment (UE) cannot detect the PBCH or the synchronization signal (Synchronization Signal and PBCH block, SSB) of the retransmission.

Disclosure of Invention

The embodiment of the invention provides a sending method, a receiving method, network equipment and a terminal, which are used for solving the problem that UE (user equipment) cannot detect PBCH or SSB (packet switched) of repeated transmission because the detection starting time slots of type0-PDCCH (physical downlink control channel) determined by the PBCH of repeated transmission are the same after the number of the repeated transmission of the PBCH is increased.

In order to solve the technical problems, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a transmission method, which is used for a network device, where the transmission method includes:

transmitting PDCCH in a type0 physical downlink control channel type0-PDCCH common search space corresponding to a physical broadcast channel PBCH for repeated transmission or a synchronization signal SSB for repeated transmission;

the detection starting time slot of the type0-PDCCH public search space is related to information carried by a Main Information Block (MIB) in a PBCH and a predefined time parameter, or the detection starting time slot of the type0-PDCCH public search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB.

In a second aspect, an embodiment of the present invention provides a receiving method, for a terminal, where the receiving method includes:

determining a detection starting time slot of a type0 physical downlink control channel type0-PDCCH public search space corresponding to a physical broadcast channel PBCH of repeated transmission or a synchronous signal SSB of repeated transmission;

The detection starting time slot of the type0-PDCCH public search space is related to information carried by a Main Information Block (MIB) in a PBCH and a predefined time parameter, or the detection starting time slot of the type0-PDCCH public search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB;

and detecting a Physical Downlink Control Channel (PDCCH) in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB.

In a third aspect, an embodiment of the present invention provides a network device, including a processor and a transceiver:

the transceiver is configured to transmit PDCCH in a type0 physical downlink control channel type0-PDCCH common search space corresponding to a physical broadcast channel PBCH for repeated transmission or a synchronization signal SSB for repeated transmission;

In a fourth aspect, an embodiment of the present invention provides a terminal, including a processor and a transceiver;

The processor is configured to determine a detection start time slot of a type0 physical downlink control channel type0-PDCCH common search space corresponding to a physical broadcast channel PBCH for repeated transmission or a synchronization signal SSB for repeated transmission;

the transceiver is configured to detect a physical downlink control channel PDCCH in a type0-PDCCH common search space corresponding to the PBCH for repeated transmission or the SSB for repeated transmission.

In a fifth aspect, an embodiment of the present invention provides a network device, including:

a transmitting module, configured to transmit a PDCCH in a type0 physical downlink control channel type0-PDCCH common search space corresponding to a physical broadcast channel PBCH for repeated transmission or a synchronization signal SSB for repeated transmission;

In a sixth aspect, an embodiment of the present invention provides a terminal, including:

the determining module is used for determining detection starting time slots of a type0 physical downlink control channel type0-PDCCH public search space corresponding to a physical broadcast channel PBCH of repeated transmission or a synchronous signal SSB of repeated transmission;

and the receiving module is used for detecting a physical downlink control channel PDCCH in a type0-PDCCH public search space corresponding to the repeated PBCH or the repeated SSB.

In a seventh aspect, an embodiment of the present invention provides a network device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program implementing the steps in the transmission method according to the first aspect when executed by the processor.

In an eighth aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program implementing the steps in the receiving method according to the second aspect when executed by the processor.

In a ninth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in the transmission method according to the first aspect, or which when executed by a processor implements the steps in the reception method according to the second aspect.

In the embodiment of the invention, PDCCH is transmitted in a type0-PDCCH public search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB; since the detection start time slot of the type0-PDCCH common search space is related to the information carried by the master information block MIB in the PBCH and the predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to the information carried by the MIB in the PBCH and the transmission information of the repeatedly transmitted PBCH or SSB, in the time domain, the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or SSB has a time offset. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, so that the UE can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a flowchart of a transmission method according to an embodiment of the present invention;

fig. 2 and fig. 3 are schematic diagrams of PBCH transmission according to an embodiment of the present invention;

fig. 4 and fig. 5 are schematic diagrams of a position of a detection start time slot of a Type0-PDCCH of repeated transmission according to an embodiment of the present invention;

fig. 6 is a flowchart of a receiving method according to an embodiment of the present invention;

fig. 7 is a diagram of a network device according to an embodiment of the present invention;

fig. 8 is a diagram of another network device according to an embodiment of the present invention;

fig. 9 is a diagram of a terminal structure according to an embodiment of the present invention;

fig. 10 is a diagram of another terminal structure according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, fig. 1 is a flowchart of a transmission method provided by an embodiment of the present invention, applied to a network device, as shown in fig. 1, where the transmission method includes the following steps:

step 101, transmitting PDCCH in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB; the detection starting time slot of the type0-PDCCH public search space is related to information carried by a Main Information Block (MIB) in a PBCH and a predefined time parameter, or the detection starting time slot of the type0-PDCCH public search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB.

Wherein the predefined time parameter is a time value in units of time slots or absolute durations, i.e. the predefined time parameter is a value in units of time slots or absolute durations (e.g. 5 ms).

The method of the embodiment of the invention can be used for the repeated transmission scene of the PBCH in the SSB, and can also be used for the repeated transmission scene of the PBCH in the SSB, namely, only the repeated transmission of the PBCH is carried out, and the primary synchronization signal (Primary Synchronization Signal, PSS for short) and the secondary synchronization signal (Secondary Synchronization Signal, SSS for short) do not carry out repeated transmission. When only the PBCH portion is retransmitted (PSS and SSS are not retransmitted), there is a complete SSB transmission corresponding to it, the PBCH of which is identical to the content of the repeated PBCH bearer, e.g. SSB available for legacy NR terminal access. There is accordingly also a common search space for the type0-PDCCH corresponding thereto for such PBCH-only repeated transmissions. In the repeated transmission scenario of PBCHs in SSBs, each PBCH corresponds to a complete SSB.

It should be understood that, in the specific embodiment of the present invention, the repeated transmission of the SSB refers to multiple transmissions of the SSB having the same SSB index, and the repeated transmission of the PBCH refers to multiple repeated transmissions of the PBCH in the SSB having the same SSB index.

Specifically, for SSB index i (i.e., index i of SSB), the terminal will be n in the starting slot ₀ The PDCCH is detected in a type0-PDCCH search space in consecutive two slots, referred to herein as a type0-PDCCH common search space corresponding to SSB i.

In this embodiment, the PDCCH is transmitted in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB; since the detection start time slot of the type0-PDCCH common search space is related to the information carried by the master information block MIB in the PBCH and the predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to the information carried by the MIB in the PBCH and the transmission information of the repeatedly transmitted PBCH or SSB, in the time domain, the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or SSB has a time offset. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, so that the UE can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

In one embodiment of the present application, the PBCH for repeated transmission or the SSB for repeated transmission are both located in even radio frames or both located in odd radio frames, and the number of transmissions in the same radio frame is greater than 1.

Specifically, when PBCH or SSB is repeatedly transmitted, the repeatedly transmitted PBCH or SSB transmission is located within the same radio frame, and is not dispersed to two radio frames of 20 ms. Thus, only half frame indication bits in the PBCH will change, but the last bit of the wireless frame number will not change, so that the complexity of PBCH detection can be reduced as much as possible.

This is described in further detail below.

According to the processing flow of the PBCH of NR, the transmission of the PBCH uses double layer scrambling. In the first layer scrambling process, the unchanged content of repeated transmission is scrambled, including 24 bits of a higher layer, and the 1 st and 4 th last bits in the lowest 4 bits of the SFN.

If the repeatedly transmitted PBCH or SSB is not located in the same radio frame, the last bit of the lowest 4 bits of SFN of different PBCH will change, and cannot participate in the first layer scrambling, which increases the complexity of PBCH detection.

In the embodiment of the present application, the PBCH or SSB that is repeatedly transmitted is located in the same radio frame, for example, is located in an even radio frame or is located in an odd radio frame at the same time, so that the last bit in the lowest 4 bits of the SFN of the PBCH is the same, and the existing NR procedure can be used for scrambling without increasing complexity.

The following is further described in conjunction with the accompanying drawings. For example, to enhance coverage of the PBCH, 2 repeated transmissions of the PBCH per 20ms are achieved using two half frames of the same radio frame. Unlike the 10ms transmission period, the transmission of the 10ms period is repeated twice every 20ms for a transmission interval of 10ms, and the two half frames of the same radio frame are used for a transmission interval of 5ms for 2 PBCH every 20 ms. Fig. 2 is a schematic diagram of a 10ms period, and fig. 3 is a schematic diagram of implementing 2 PBCH repetition transmissions within 20ms using two half frames of the same radio frame. In fig. 2 and 3, a represents SSB0, B represents SSB1, C represents SSB2, and D represents SSB3.

In the transmission scheme shown in fig. 3, since the PBCH of the repeated transmission occurs only in the odd or even radio frames, the lowest order bits of the system frame number (System frame number, abbreviated SFN) remain unchanged. Although Half-Radio Frame (HRF) indication bits change, since HRF is not scrambled by the first layer, UE performs blind detection in a blind detection assumption manner similar to the 2 nd and 3 rd bits of SFN, and thus combining PBCH.

In the transmission scheme shown in fig. 3, the repetition of PBCH is realized by the repetition of SSB. Another implementation is that PSS and SSS in SSB do not increase repetition, still only once within 20ms, while repeated transmissions at intervals of 5ms only transmit part of PBCH.

In one embodiment of the present application, SSBs corresponding to the PBCH of the repeated transmission or SSBs of the repeated transmission have the same SSB index.

That is, repeated transmissions of SSBs in particular embodiments of the present application refer to multiple transmissions of SSBs having the same SSB index. Likewise, repeated transmission of a PBCH refers to multiple transmissions of the PBCH corresponding to the same SSB index.

And the time offset also means that for the same SSB index i, there is a time offset in the time domain in the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted SSBi or the repeatedly transmitted PBCH corresponding to SSB i.

In one embodiment of the present application, the transmission information includes at least one of the following information:

the field where the PBCH or SSB of the repeated transmission is located, or a field indication bit carried by the PBCH;

the radio frame where the PBCH or SSB of the repeated transmission is located, or the radio frame number carried by the PBCH;

and the transmission times index of the PBCH or SSB of the repeated transmission.

In one embodiment of the present application, the detection start time slot n of the type0-PDCCH common search space corresponding to the repeated PBCH or SSB ₀ There is an offset and the detection start time slot is a function of at least one of the following parameters:

The wireless frame number of the PBCH or SSB of the repeated transmission is located;

the half frame indication bit corresponding to the PBCH or SSB of the repeated transmission takes a value;

In one embodiment of the present application, the detection start time slot n of the type0-PDCCH common search space corresponding to the repeated PBCH or SSB ₀ The method comprises the following steps:

or alternatively

Or alternatively

Said n ₀ The method comprises the steps that a detection starting time slot sequence number of a type0-PDCCH public search space corresponding to SSBi corresponding to PBCH of repeated transmission or SSBi corresponding to SSBi is used, i is an SSB index, O is a subframe interval between a detection starting time slot of the type0-PDCCH search space corresponding to SSBi and a starting position of an even frame, A is a value of the lowest bit of an SFN, B is a value of a field indication bit, S is granularity of time, and mu is a subcarrier interval of COESET#0; the M is the equivalent time slot number occupied by the type0-PDCCH search space corresponding to the SSBi,the number of time slots in one system frame based on the subcarrier spacing of the control resource set of the bearer type 0-PDCCH; and j is the transmission number of the repeatedly transmitted PBCH or the repeatedly transmitted SSB.

Specifically, an offset value related to a field indication value (which may be understood as a field indication bit value) and/or a radio frame number is introduced into the determining function for detecting the starting time slot.

Wherein the meaning of O and M is the same as agreed upon when the existing 3GPP protocol calculates n 0. A may be a value obtained by modulo 2 the SFN frame number where the PBCH is repeatedly transmitted, and the value is equivalent to the value of the lowest bit of the SFN. Here, the lowest bit of SNF refers to the value of a 2-ary bit.

The following description is given below.

Case one, n ₀ Is associated with the radio frame number where the repeatedly transmitted PBCH or SSB is located.

Detection start time slot n of type0-PDCCH corresponding to PBCH of repeated transmission or SSB of repeated transmission ₀ Is determined by the following method:

for SSB index i, it is assumed that the corresponding detection start slot sequence number is located in radio frame SFN _C In, if SFN _C mod2 = 0, the common search space for type0-PDCCH is located within an even radio frame if SFN _C mod2 = 1, the common search space for type0-PDCCH is located within an odd radio frame.

Assume that the offset value of the type0-PDCCH corresponding to the PBCH of the retransmission is offset in S milliseconds (i.e., ms) or S slots, i.e., S is granularity, adjacent offset is S milliseconds or S slots, a represents the lowest bit (1 ^st least significant bits of the system frame number), B represents the value of the half frame index (half frame index), which is usually 0 or 1, and is described below with S (in ms) as an example.

For the SSB index i,assume that it is located in a radio frame SFN _C In, if->I.e. SFN _C mod2 = 0, the common search space of type0-PDCCH is considered to be located within an even radio frame if +.>I.e. SFN _C The common search space for mod2=1, i.e. type0-PDCCH, is located within an odd radio frame.

In the above embodiment, the (2a+b) S can be understood as a predefined time parameter. In other words, in some fixed scenarios, such as one repeat transmission, the value of (2a+b) S may be predetermined, and the value of (2a+b) S in the above formula may be replaced with the predetermined time value.

When S corresponds to a slot, a detection start slot of a type0-PDCCH corresponding to a PBCH for repeated transmission or an SSB for repeated transmission may be determined as follows:

for SSB indexAssume that it is located in a radio frame SFN _C In, if->I.e. SFN _C mod2 = 0, the common search space of type0-PDCCH is considered to be located within an even radio frame if +.>I.e. SFN _C The common search space for mod2=1, i.e. type0-PDCCH, is located within an odd radio frame.

For example, if the PBCH is located in the second half of the odd radio frame, the corresponding a is 1, B is 1, the offset value is (2·a+b) ·s=3s, if the PBCH is located in the first half of the even radio frame, a is 0, B is 0, and no offset value exists.

If the PBCH (or SSB) is repeatedly transmitted only 1 time within 20ms, the offset value may be associated with only the radio frame number or field indication, e.g., the PBCH is separated by 10ms between two repeated transmissions within 20ms, where the two PBCH transmissions only have the last bit of the radio frame number changed. The detection start slot of the type0-PDCCH may be determined as follows.

Cases two, n ₀ The field indication bit corresponding to the repeated transmission PBCH or SSB is related to the value.

For the SSB index i,assume that the corresponding detection starting slot sequence number is located in the radio frame SFN _C In, if->I.e. SFN _C mod2 = 0, the common search space of type0-PDCCH is located in an even radio frame, if +.>I.e. SFN _C mod2 = 1, the common search space for type0-PDCCH is located within an odd radio frame. Or alternativelyJudging radio frame SFN _C Is a function of the odd or even frames, corresponding with +.>Replacement->

In the above embodiments, the AS may be understood AS a predefined time parameter. In other words, in some fixed scenarios, such AS making one repeat transmission, the value of the AS may be predetermined and the AS in the above formula may be replaced with the predeterminable time value.

If the PBCH is repeatedly transmitted only 1 time within 20ms, both transmissions being located in two fields of the same radio frame, the offset value is only associated with the field indication,

for the SSB index i,assume that the corresponding detection starting slot sequence number is located in the radio frame SFN _C In, if->I.e. SFN _C mod2 = 0, the common search space of type0-PDCCH is located in an even radio frame, if +.>I.e. SFN _C mod2 = 1, the common search space for type0-PDCCH is located within an odd radio frame. Or alternativelyJudging radio frame SFN _C Is an odd frame or an even frame, corresponding with +.>Replacement->

In the above-described embodiments, the BS can be understood as a predefined time parameter. In other words, in some fixed scenarios, such as one repeat transmission, the value of the BS may be predetermined and the BS in the above equation replaced with the predetermined time value.

As shown in fig. 4, two PBCH repetitions are located in odd frames, but located in different half frames, and the type0-PDCCH detection corresponding to the PBCH is offset from the initial slot by 5ms. Fig. 4 is a schematic diagram of a detection start time slot when a subcarrier interval is 30khz, ssb is transmitted at 3 rd half frame every 20ms, the detection start time slot of type0-PDCCH corresponds to index0 of table 38.213 13-11, where a represents repeated type0-PDCCH and SIB1 transmission, and b represents repeated PBCH transmission.

Detecting a starting time slot n ₀ Or as a function of the index of the number of transmissions of the PBCH or SSB of the repeated transmission. PBCH (or SSB) are transmitted N times per 20ms, and each transmission number j may be based on the positions of the PBCHs, where j=0, 1, …, N-1, and the slot position corresponding to the type0-PDCCH of the retransmission is related to the number of PBCH retransmission.

For example: for the SSB index i,situated in radio frame SFN _C In, ifSFN then _C mod2=0, i.e. located in even radio frames, ifSFN then _C mod2=1, i.e. located within an odd radio frame. Which is a kind ofThe HRF is a field indication, indicating whether the field in which the PBCH transmission is located is the first or second half of the radio frame. Or alternativelyJudging radio frame SFN _C Is an odd frame or an even frame, corresponding with +.>Replacement->

In the above embodiment, the jS can be understood as a predefined time parameter. In other words, in some fixed scenarios, such as one repeat transmission, the value of jS may be predetermined and the jS in the above equation replaced with the predeterminable time value.

In the present application, the PBCH may be used for repeated transmission only, and the PBCH may not transmit PSS or SSS, or may be used for repeated transmission of the entire SSB. The formula for determining the detection start time slot of the type0-PDCCH is similar in determination mode, and when the repeated SSB is not the complete SSB, the repeated PBCH still has a corresponding relation with the index SSB i of the complete SSB.

Besides the detection positions of the type0-PDCCH indicated by the PBCH, some detection positions of different symbols of the same time slot or other time slots are introduced, the detection positions of the type0-PDCCH corresponding to the PBCH which is partially repeatedly sent are the positions indicated by the non-PBCH, as shown in fig. 5, the subcarrier interval is 30khz, the ssb is transmitted at the 3 rd half frame of every 20ms, the detection start time slot of the type0-PDCCH corresponds to the schematic diagram of the detection start time slot when index0 of table 38.213-13-11, where c represents the detection position corresponding to the first transmission, d represents the detection position corresponding to the second transmission, e represents the detection position corresponding to the third transmission, f represents the detection position corresponding to the fourth transmission, and the positions identified by c and e are as follows: the position of the detection type0-PDCCH indicated by the PBCH, the first symbol index is 0, and the positions marked by d and f are: the position of the type0-PDCCH is additionally detected, and the start symbol index is 0.

Through the design, forward compatibility can be realized, the detection position of the original type0-PDCCH indicated by the PBCH is still effective, and the traditional UE can also obtain the detection starting time slot of the corresponding type0-PDCCH through the PBCH and detect the PDCCH; the semi-static frame structure can be adapted by configuring the interval s=5 ms.

In an embodiment of the present application, the downlink control information (Downlink Control Information, abbreviated DCI) carried by all PDCCHs or a portion of PDCCHs transmitted in the type0-PDCCH common search space corresponding to the PBCH or SSB of the repeated transmission is the same.

Specifically, the code rate of the type0-PDCCH at 8CCE is slightly larger than that of the PBCH, the PBCH can further have 4 times of merging gain within 80ms, and the type0-PDCCH standard does not support merging. Considering the transmission reliability, in the embodiment of the present application, the DCI content may be set to be identical, or part of the DCI content may be transmitted to be identical, for example, 8 times of DCI content may be transmitted to be identical, for example, first 4 times of DCI content may be transmitted to be identical, or part of DCI content may be transmitted to be identical, for example, first 4 times of DCI content may be identical, and second 4 times of DCI content may be transmitted to be identical. By means of the constraint, combination of type0-PDCCH can be achieved, and transmission reliability of the PDCCH is enhanced.

When DCI requiring all 8 or part of type0-PDCCH transmissions within 160ms is identical, if its resource allocation domains are identical, the frequency domain resources of the scheduled physical downlink shared channel (Physical Downlink Shared Channel, abbreviated PDSCH) are identical at 8 transmissions, and no frequency diversity gain can be obtained. Therefore, in the embodiment of the present application, frequency hopping is introduced between 8 transmissions: predefining a frequency hopping interval N as an interval of RBs transmitting frequency domain starting positions twice consecutively; n may be a parameter related to the number of repeated transmissions, for example, B is the bandwidth of initial BWP of transmission type0, let n=b/L, and L be the number of repeated transmissions.

That is, in one embodiment of the present application, the target PDSCH scheduled by the DCI having the same content is configured to have an offset in the frequency domain or the time domain.

This manner of frequency hopping described above is not backward compatible for terminals supporting certain protocols, so if backward compatible is to be achieved, the implementation is to introduce only frequency hopping between PDSCH transmissions scheduled by type0-PDCCH corresponding to PBCH that is repeatedly transmitted within 20 ms. PDSCH scheduled by Type0-PDCCH is generally used to carry SIB1 transmission or remaining minimum system information (Remaining minimum system information, abbreviated RMSI).

Since the conventional UE accesses, only one type0-PDCCH and corresponding PDSCH can be identified for every 20ms PBCH. The PDSCH is used as a reference, and the PDSCH scheduled by other types 0-PDCCH is subjected to time-frequency domain offset based on the reference, namely frequency hopping offset, and the time domain offset ensures mutual staggering of the PDSCH in the time domain.

The frequency hopping interval described above may be predefined or indicated by the PBCH.

Further, the offset of the target PDSCH in the frequency domain is predefined by a protocol;

or (b)

The offset of the target PDSCH on the frequency domain is related to a control channel resource set where a common search space of the type0-PDCCH transmitting the DCI is located;

Or (b)

The offset of the target PDSCH in the frequency domain is related to the transmission number index of the repeatedly transmitted PBCH or SSB.

Referring to fig. 6, fig. 6 is a flowchart of a receiving method provided in an embodiment of the present invention, applied to a terminal, as shown in fig. 6, the receiving method includes the following steps:

step 201, determining a detection start time slot of a type0-PDCCH common search space corresponding to a PBCH of repeated transmission or an SSB of repeated transmission. The detection starting time slot of the type0-PDCCH public search space is related to information carried by a Main Information Block (MIB) in a PBCH and a predefined time parameter, or the detection starting time slot of the type0-PDCCH public search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB.

The predefined time parameter is a time value in time slots or absolute durations, i.e. the predefined time parameter is a value in time slots or absolute durations (e.g. 5 ms).

Step 202, detecting PDCCH in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB.

It should be understood that repeated transmissions of SSBs in particular embodiments of the present invention refer to multiple transmissions of SSBs having the same SSB index. Likewise, the repeated transmission of the PBCH refers to multiple repeated transmissions of the PBCH in SSBs having the same SSB index.

In this embodiment, a detection start time slot of a type0-PDCCH common search space corresponding to a repeatedly transmitted PBCH or a repeatedly transmitted SSB is determined; and detecting PDCCH in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB. Since the detection start time slot of the type0-PDCCH common search space is related to information carried by a master information block MIB in a PBCH and a predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to information carried by the MIB in the PBCH and transmission information of the repeated PBCH or SSB, in the time domain, there is a time offset in the detection start time slot of the type0-PDCCH common search space corresponding to the repeated PBCH or SSB. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, and therefore, the terminal can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

This is described in further detail below.

The following is further described in conjunction with the accompanying drawings. For example, to enhance coverage of the PBCH, 2 repeated transmissions of the PBCH per 20ms are achieved using two half frames of the same radio frame. Unlike the 10ms transmission period, the transmission of the 10ms period is repeated twice every 20ms for a transmission interval of 10ms, and the two half frames of the same radio frame are used for a transmission interval of 5ms for 2 PBCH every 20 ms. Fig. 2 is a schematic diagram of a 10ms period, and fig. 3 is a schematic diagram of implementing 2 PBCH repetition transmissions within 20ms using two half frames of the same radio frame.

In the transmission method shown in fig. 3, since PBCH transmission of repeated transmission only occurs in odd radio frames or even radio frames, the lowest bit of SFN is kept unchanged, and although HRF indication bits are changed, since HRF is not scrambled by the first layer, UE performs blind detection in a blind detection assumption manner similar to the reciprocal 2,3 bits of SFN, so that PBCH combination can be performed.

And the time offset also means that, for the same SSB index i, there is a time offset in the time domain in the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted SSB i or the repeatedly transmitted PBCH corresponding to SSB i.

In one embodiment of the present application, the detection start time slot n of the type0-PDCCH common search space corresponding to the repeated PBCH or SSB ₀ As a function of at least one of the following parameters:

Specifically, the start time slot n is detected ₀ Specifically, the method can be determined by the following expression:

or alternatively

Or alternatively

/>

Or alternatively

Said n ₀ SSB corresponding to the PBCH for the retransmission _i Or repeatedly transmitted SSB _i Detecting a starting time slot sequence number of a corresponding type0-PDCCH public search space, wherein i is an SSB index, and O is SSB _i The corresponding type0-PDCCH searching space detects a subframe interval between a starting time slot and a starting position of an even frame, wherein A is a value of a lowest bit of an SFN, B is a value of a field indication bit, S is granularity of the time, and mu is a subcarrier interval of CORESET#0; the M is SSB _i The corresponding type0-PDCCH search space occupies the equivalent number of slots,the number of time slots in one system frame in the subcarrier spacing unit of SIB 1; and j is the transmission number of the repeatedly transmitted PBCH or the repeatedly transmitted SSB.

The following description is given below.

Assume that the offset value of the type0-PDCCH corresponding to the PBCH of the retransmission is offset in S milliseconds (i.e., ms) or S slots, i.e., S is granularity, adjacent offset is S milliseconds or S slots, a represents the lowest bit (1 ^st least significant bits of the system frame number), B represents the value of the half frame index (half frame index), which is typically 0 or 1, and here, S (in ms) is taken as an example as follows:

If the PBCH is repeatedly transmitted only 1 time within 20ms, both transmissions being located in two fields of the same radio frame, the offset value is only associated with the field indication.

For the SSB index i,assume that the corresponding detection starting slot sequence number is located in the radio frame SFN _C In, if->I.e. SFN _C mod2 = 0, the common search space of type0-PDCCH is located in an even radio frame, if +.>I.e. SFN _C mod2 = 1, the common search space for type0-PDCCH is located within an odd radio frame. Or alternativelyJudging radio frame SFN _C Is an odd frame or an even frame, corresponding with +.>Replacement->/>

As shown in fig. 4, two PBCH repetitions are located in odd frames, but located in different half frames, and the type0-PDCCH detection corresponding to the PBCH is offset from the initial slot by 5ms.

For example: for the SSB index i,situated in radio frame SFN _C In, ifSFN then _C mod2=0, i.e. located in even radio frames, ifSFN then _C mod2=1, i.e. located within an odd radio frame. Wherein HRF is a field indication indicating whether the field in which PBCH transmission is located is the first or second half of the radio frame. Or alternativelyJudging radio frame SFN _C Is an odd frame or an even frame, corresponding with +.>Replacement->

Besides the detection positions of the type0-PDCCH indicated by the PBCH, detection positions of different symbols of the same time slot or other time slots are introduced, and the detection positions of the type0-PDCCH corresponding to the partially repeated PBCH are the positions indicated by the non-PBCH, as shown in fig. 5.

In an embodiment of the present application, the DCI carried by all PDCCHs or a part of PDCCHs transmitted in the type0-PDCCH common search space corresponding to the PBCH or SSB of the repeated transmission is the same.

When DCI requiring all 8 or part of type0-PDCCH transmissions within 160ms is identical, if the resource allocation domains are identical, the frequency domain resources of the scheduled PDSCH are identical at 8 transmissions, and no frequency diversity gain can be obtained. Therefore, in the embodiment of the present application, frequency hopping is introduced between 8 transmissions: predefining a frequency hopping interval N as an interval of RBs transmitting frequency domain starting positions twice consecutively; n may be a parameter related to the number of repeated transmissions, for example, B is the bandwidth of initial BWP of transmission type0, let n=b/L, and L be the number of repeated transmissions.

In one embodiment of the application, the offset of the target PDSCH in the frequency domain is predefined by the protocol;

or (b)

Or (b)

Referring to fig. 7, fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 7, a network device 300 includes:

a sending module 301, configured to transmit a PDCCH in a type0-PDCCH common search space corresponding to a PBCH for repeated transmission or an SSB for repeated transmission; the detection starting time slot of the type0-PDCCH public search space is related to information carried by a Main Information Block (MIB) in a PBCH and a predefined time parameter, or the detection starting time slot of the type0-PDCCH public search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB.

Further, the predefined time parameter is a time value in units of time slots or absolute durations.

Further, the PBCH for repeated transmission or the SSB for repeated transmission are both located in even radio frames or both located in odd radio frames, and the number of transmissions in the same radio frame is greater than 1.

Further, the SSB corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission has the same SSB index.

Further, the transmission information includes at least one of the following information:

Further, the detection start time slot n of the type0-PDCCH common search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission ₀ As a function of at least one of the following parameters:

Further, the detection start time slot n of the type0-PDCCH common search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission ₀ The method comprises the following steps:

or alternatively

Or alternatively

Said n ₀ For the detection start time slot sequence number of the common search space of the type0-PDCCH corresponding to the SSBi corresponding to the PBCH of the repeated transmission or the SSBi corresponding to the repeated transmission, i is an SSB index, O is a subframe interval between the detection start time slot of the type0-PDCCH search space corresponding to the SSBi and the start position of an even frame, A is the value of the lowest bit of the SFN, and B is the value of a field indication bit, S is the granularity of the time, and mu is the subcarrier interval of CORESET#0; the M is the equivalent time slot number occupied by the type0-PDCCH search space corresponding to the SSBi,the number of time slots in one system frame based on the subcarrier spacing of the control resource set of the bearer type 0-PDCCH; and j is the transmission number of the repeatedly transmitted PBCH or the repeatedly transmitted SSB.

Further, the DCI content carried by all PDCCHs or part of PDCCHs transmitted in the type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB is the same.

Further, the target PDSCH scheduled by the DCI with the same content is configured to have an offset in the frequency domain or the time domain.

or (b)

The network device 300 is capable of implementing each process implemented by the network device in the method embodiment shown in fig. 1, and will not be described herein again for the sake of avoiding repetition.

The network device 300 of the embodiment of the present invention transmits PDCCH in a type0-PDCCH common search space corresponding to PBCH for repeated transmission or SSB for repeated transmission; since the detection start time slot of the type0-PDCCH common search space is related to the information carried by the master information block MIB in the PBCH and the predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to the information carried by the MIB in the PBCH and the transmission information of the repeatedly transmitted PBCH or SSB, in the time domain, the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or SSB has a time offset. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, so that the UE can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

Referring to fig. 8, an embodiment of the present invention further provides a network device including a bus 1001, a transceiver 1002, an antenna 1003, a bus interface 1004, a processor 1005, and a memory 1006.

The transceiver 1002 is configured to transmit PDCCH in a type0-PDCCH common search space corresponding to a PBCH for repeated transmission or SSB for repeated transmission; the detection starting time slot of the type0-PDCCH public search space is related to information carried by a Main Information Block (MIB) in a PBCH and a predefined time parameter, or the detection starting time slot of the type0-PDCCH public search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB.

Further, the detection start time slot of the type0-PDCCH common search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission has a time offset, including,

the detection start time slot n of the type0-PDCCH public search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission ₀ As a function of at least one of the following parameters:

or alternatively

Or alternatively

Said n ₀ The method comprises the steps that a detection starting time slot sequence number of a type0-PDCCH public search space corresponding to SSBi corresponding to PBCH of repeated transmission or SSBi corresponding to SSBi is used, i is an SSB index, O is a subframe interval between a detection starting time slot of the type0-PDCCH search space corresponding to SSBi and a starting position of an even frame, A is a value of the lowest bit of an SFN, B is a value of a field indication bit, S is granularity of time, and mu is a subcarrier interval of COESET#0; the M is the equivalent time slot number occupied by the type0-PDCCH search space corresponding to the SSBi, The number of time slots in one system frame based on the subcarrier spacing of the control resource set of the bearer type 0-PDCCH; and j is the transmission number of the repeatedly transmitted PBCH or the repeatedly transmitted SSB.

or (b)

The network device is capable of implementing each process implemented by the network device in the method embodiment shown in fig. 1, and in order to avoid repetition, a description is omitted here.

The network equipment of the embodiment of the invention transmits PDCCH in a type0-PDCCH public search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB; since the detection start time slot of the type0-PDCCH common search space is related to the information carried by the master information block MIB in the PBCH and the predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to the information carried by the MIB in the PBCH and the transmission information of the repeatedly transmitted PBCH or SSB, in the time domain, the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or SSB has a time offset. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, so that the UE can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

In fig. 8, a bus architecture (represented by bus 1001), the bus 1001 may include any number of interconnected buses and bridges, with the bus 1001 linking together various circuits, including one or more processors, represented by a processor 1005, and memory, represented by a memory 1006. Bus 1001 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. Bus interface 1004 provides an interface between bus 1001 and transceiver 1002. The transceiver 1002 may be one element or a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 1005 is transmitted over a wireless medium via the antenna 1003, and further, the antenna 1003 receives data and transmits the data to the processor 1005.

The processor 1005 is responsible for managing the bus 1001 and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 1006 may be used to store data used by processor 1005 in performing operations.

Alternatively, the processor 1005 may be CPU, ASIC, FPGA or a CPLD.

Preferably, the embodiment of the present invention further provides a network device, which includes a processor 1005, a memory 1006, and a computer program stored in the memory 1006 and capable of running on the processor 1005, where the computer program when executed by the processor 1005 implements each process of the foregoing embodiment of the sending method shown in fig. 1, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 9, a terminal 400 includes a processing module 401 and a receiving module 402;

the processing module 401 is configured to determine a detection start time slot of a type0-PDCCH common search space corresponding to a PBCH for repeated transmission or an SSB for repeated transmission;

The receiving module 402 is configured to detect a PDCCH in a type0-PDCCH common search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission.

Further, the method comprises the steps of,

Or alternatively

Or (b)

or (b)

The offset of the target PDSCH in the frequency domain is related to the transmission frequency index of the repeatedly transmitted PBCH or SSB

The terminal 400 is capable of implementing each process implemented by the terminal in the method embodiment shown in fig. 6, and will not be described herein again for avoiding repetition.

The terminal 400 of the embodiment of the present invention determines a detection start time slot of a type0-PDCCH common search space corresponding to a PBCH for repeated transmission or an SSB for repeated transmission; and detecting PDCCH in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB. Since the detection start time slot of the type0-PDCCH common search space is related to the information carried by the master information block MIB in the PBCH and the predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to the information carried by the MIB in the PBCH and the transmission information of the repeatedly transmitted PBCH or SSB, in the time domain, the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or SSB has a time offset. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, and therefore, the terminal can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

Fig. 10 is a schematic structural diagram of another terminal implementing various embodiments of the present invention, and the terminal 1100 includes, but is not limited to: transceiver unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, processor 1110, and power supply 1111. It will be appreciated by those skilled in the art that the terminal structure shown in fig. 6 is not limiting of the terminal and that the terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. In the embodiment of the invention, the terminal comprises, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer and the like.

Wherein, the processor 1110 is configured to determine a detection start time slot of a type0-PDCCH common search space corresponding to a PBCH for repeated transmission or an SSB for repeated transmission; the detection starting time slot of the type0-PDCCH public search space is related to information carried by a Main Information Block (MIB) in a PBCH and a predefined time parameter, or the detection starting time slot of the type0-PDCCH public search space is related to information carried by the MIB in the PBCH and transmission information of the repeatedly transmitted PBCH or SSB.

And a transceiving unit 1101, configured to detect a PDCCH in a type0-PDCCH common search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission.

Further, the repeated PBCH or SSB of the repeated transmission corresponds to the tyDetection start time slot n of pe0-PDCCH public search space ₀ As a function of at least one of the following parameters:

Further, the method comprises the steps of,

or alternatively

Or alternatively

or (b)

The terminal 1100 is capable of implementing each process implemented by the terminal in the method embodiment shown in fig. 6, and will not be described herein again for avoiding repetition.

The terminal 1100 of the embodiment of the present invention determines a detection start time slot of a type0-PDCCH common search space corresponding to a PBCH for repeated transmission or an SSB for repeated transmission; and detecting PDCCH in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB. Since the detection start time slot of the type0-PDCCH common search space is related to the information carried by the master information block MIB in the PBCH and the predefined time parameter, or the detection start time slot of the type0-PDCCH common search space is related to the information carried by the MIB in the PBCH and the transmission information of the repeatedly transmitted PBCH or SSB, in the time domain, the detection start time slot of the type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or SSB has a time offset. Because the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission have time offsets, the detection starting time slots of the common search spaces of the type0-PDCCH corresponding to the PBCH or the SSB of the repeated transmission are different, and therefore, the terminal can schedule broadcast information based on PDCCHs in the search spaces with certain offsets in the time domains.

It should be understood that, in the embodiment of the present invention, the transceiver 1101 may be configured to receive and transmit information or signals during a call, and specifically, receive downlink data from a base station and process the received downlink data with the processor 1110; and, the uplink data is transmitted to the base station. Typically, the transceiver 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. The transceiver 1101 may also communicate with a network and other devices via a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 1102, such as helping the user to send and receive e-mail, browse web pages, access streaming media, etc.

The audio output unit 1103 may convert audio data received by the transceiving unit 1101 or the network module 1102 or stored in the memory 1109 into an audio signal and output as sound. Also, the audio output unit 1103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal 1100. The audio output unit 1103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1104 is used for receiving an audio or video signal. The input unit 1104 may include a graphics processor (Graphics Processing Unit, abbreviated as GPU) 11041 and a microphone 11042, the graphics processor 11041 processing image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 1106. The image frames processed by the graphic processor 11041 may be stored in the memory 1109 (or other storage medium) or transmitted via the transceiving unit 1101 or the network module 1102. The microphone 11042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output that can be transmitted to the mobile communication base station via the transceiving unit 1101 in the case of a telephone call mode.

Terminal 1100 can also include at least one sensor 1105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 11061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 11061 and/or the backlight when the terminal 1100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when the accelerometer sensor is stationary, and can be used for recognizing the terminal gesture (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; the sensor 1105 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein.

The display unit 1106 is used to display information input by a user or information provided to the user. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD) or an Organic Light-Emitting Diode (OLED).

The user input unit 1107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 1107 includes a touch panel 11071 and other input devices 11072. The touch panel 11071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 11071 or thereabout using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 11071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 1110, and receives and executes commands sent from the processor 1110. In addition, the touch panel 11071 may be implemented in various types of resistive, capacitive, infrared, surface acoustic wave, and the like. The user input unit 1107 may include other input devices 11072 in addition to the touch panel 11071. In particular, other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 11071 may be overlaid on the display panel 11061, and when the touch panel 11071 detects a touch operation thereon or thereabout, the touch panel is transferred to the processor 1110 to determine a type of touch event, and then the processor 1110 provides a corresponding visual output on the display panel 11061 according to the type of touch event. Although in fig. 6, the touch panel 11071 and the display panel 11061 are implemented as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 11071 may be integrated with the display panel 11061 to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 1108 is an interface for connecting an external device to the terminal 1100. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. Interface unit 1108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within terminal 1100 or may be used to transmit data between terminal 1100 and an external device.

The memory 1109 may be used to store software programs as well as various data. The memory 1109 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 1109 may include high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 1110 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or executing software programs and/or modules stored in the memory 1109, and calling data stored in the memory 1109, thereby performing overall monitoring of the terminal. Processor 1110 may include one or more processing units; preferably, the processor 1110 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 1110.

Terminal 1100 can also include a power supply 1111 (e.g., a battery) for powering the various components, and preferably, power supply 1111 can be logically coupled to processor 1110 via a power management system that can perform functions such as managing charge, discharge, and power consumption.

In addition, the terminal 1100 includes some functional modules, which are not shown, and will not be described herein.

Preferably, the embodiment of the present invention further provides a terminal, which includes a processor 1110, a memory 1109, and a computer program stored in the memory 1109 and capable of running on the processor 1110, where the computer program is executed by the processor 1110 to implement each process of the receiving method embodiment shown in fig. 6 and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.

The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements each process of the foregoing embodiment of the transmission method shown in fig. 1, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein.

The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the computer program when executed by a processor implements each process of the receiving method embodiment shown in fig. 6 and achieves the same technical effects, and in order to avoid repetition, a description is omitted here.

Wherein the computer readable storage medium is such as ROM, RAM, magnetic or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. A transmission method for a network device, the transmission method comprising:

2. The transmission method according to claim 1, wherein the predefined time parameter is a time value in units of time slots or absolute durations.

3. The transmission method according to claim 1, wherein,

the repeated PBCH or the repeated SSB are located in even radio frames or in odd radio frames, and the transmission times in the same radio frame are more than 1.

4. The transmission method of claim 1, wherein SSBs corresponding to the PBCH of the repeated transmission or SSBs of the repeated transmission have the same SSB index.

5. The transmission method according to claim 1, wherein the transmission information includes at least one of the following information:

6. A transmission method according to claim 1 or 2 or 3, characterized in that:

the detection start time slot n of the type0-PDCCH public search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission ₀ The method comprises the following steps:

or alternatively

Or alternatively

Said n ₀ SSB corresponding to the PBCH for the retransmission _i Or repeatedly transmitted SSB _i Detecting a starting time slot sequence number of a corresponding type0-PDCCH public search space, wherein i is an SSB index, and O is SSB _i The corresponding type0-PDCCH searching space detects the subframe interval between the starting time slot and the starting position of an even frame, A is the value of the lowest bit of a system frame number SFN, B is the value of a field indication bit, S is the granularity of the time, and mu is the subcarrier interval of CORESET#0; the M is SSB _i The corresponding type0-PDCCH search space occupies the equivalent number of slots,the number of time slots in one system frame based on the subcarrier spacing of the control resource set of the bearer type 0-PDCCH; j is the transmission number of the repeatedly transmitted PBCH or repeatedly transmitted SSB.

7. The transmission method according to claim 1, wherein downlink control information DCI carried by all PDCCHs or a part of PDCCHs transmitted in a type0-PDCCH common search space corresponding to a PBCH or SSB of a repeated transmission is the same.

8. The transmission method of claim 7, wherein the target physical downlink shared channel PDSCH scheduled by DCI having the same content is configured to have an offset in a frequency domain or a time domain.

9. The transmission method according to claim 8, characterized in that:

the offset of the target PDSCH in the frequency domain is predefined by the protocol;

or (b)

10. A receiving method for a terminal, the receiving method comprising:

Detecting a Physical Downlink Control Channel (PDCCH) in a type0-PDCCH common search space corresponding to the repeatedly transmitted PBCH or the repeatedly transmitted SSB;

11. The receiving method according to claim 10, wherein the predefined time parameter is a time value in time slots or absolute durations.

12. The method of claim 10, wherein,

13. The receiving method of claim 10, wherein SSBs corresponding to the repeatedly transmitted PBCH or SSBs repeatedly transmitted SSBs have the same SSB index.

14. The receiving method according to claim 10, wherein the transmission information includes at least one of the following information:

15. The receiving method according to claim 10 or 11 or 12, characterized in that: detection start time slot n of type0-PDCCH common search space corresponding to PBCH of repeated transmission or SSB of repeated transmission ₀ The method comprises the following steps:

or alternatively

Or alternatively

Said n ₀ SSB corresponding to the PBCH for the retransmission _i Or repeatedly transmitted SSB _i Detecting a starting time slot sequence number of a corresponding type0-PDCCH public search space, wherein i is an SSB index, and O is SSB _i The corresponding type0-PDCCH searching space detects the subframe interval between the starting time slot and the starting position of an even frame, A is the value of the lowest bit of a system frame number SFN, B is the value of a field indication bit, S is the granularity of the time, and mu is the subcarrier interval of CORESET#0; the M is SSB _i The corresponding type0-PDCCH search space occupies the equivalent number of slots,the number of time slots in one system frame which is the subcarrier spacing unit of SIB 1; j is the transmission number of the repeatedly transmitted PBCH or repeatedly transmitted SSB.

16. The receiving method according to claim 10, wherein downlink control information DCI carried by all PDCCHs or a part of PDCCHs transmitted in a type0-PDCCH common search space corresponding to a PBCH or SSB of a repeated transmission is the same.

17. The reception method of claim 16, wherein the target physical downlink shared channel PDSCH scheduled by DCI having the same content is configured to have an offset in a frequency domain or a time domain.

18. The receiving method according to claim 17, wherein:

or (b)

19. A network device comprising a processor and a transceiver:

20. A terminal comprising a processor and a transceiver;

The transceiver is configured to detect a physical downlink control channel PDCCH in a type0-PDCCH common search space corresponding to the PBCH for repeated transmission or the SSB for repeated transmission;

21. A network device, comprising:

22. A terminal, comprising:

the determining module is used for determining a detection starting time slot of a type0 physical downlink control channel type0-PDCCH public search space corresponding to a physical broadcast channel PBCH of repeated transmission or a synchronous signal SSB of repeated transmission;

a receiving module, configured to detect a physical downlink control channel PDCCH in a type0-PDCCH common search space corresponding to the PBCH of the repeated transmission or the SSB of the repeated transmission;

23. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the transmission method according to any one of claims 1 to 9.

24. A terminal comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps in the receiving method according to any one of claims 10 to 18.

25. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps in the transmission method according to any of claims 1 to 9 or which, when executed by a processor, implements the steps in the reception method according to any of claims 10 to 18.