CN111918392B

CN111918392B - Information indication method, detection method, network equipment and terminal

Info

Publication number: CN111918392B
Application number: CN201910380375.8A
Authority: CN
Inventors: 胡丽洁; 徐晓东; 吴丹; 夏亮; 王飞; 王启星; 李男
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: 2019-05-08
Filing date: 2019-05-08
Publication date: 2023-06-27
Anticipated expiration: 2039-05-08
Also published as: CN111918392A

Abstract

The embodiment of the invention provides an information indication method, a detection method, network equipment and a terminal. The information indication method comprises the following steps: transmitting indication information to a terminal, wherein the indication information is used for indicating at least one of the following information: the transmission period of the PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1 in the synchronous signal block SSB are predefined or preconfigured values; a transmission period of PBCH, a transmission period of type0-PDCCH search space and/or a transmission period of SIB 1; the transmission period of the SSB is a predefined value; a transmission period of the SSB; the repeated transmission time interval of the PBCH, the type0-PDCCH search space or the SIB1 is a predefined value; PBCH, type0-PDCCH search space or SIB1 repetition transmission time interval; the SSB indices may be combined within each field or have the same quasi co-sited QCL. The scheme of the invention can improve the coverage gain required by the terminal for carrying out initial cell search.

Description

Information indication method, detection method, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information indication method, a detection method, a network device, and a terminal.

Background

Before a terminal in 5G NR (new air interface) accesses a cell, SSB (synchronization signal block, including primary synchronization signal block PSS, secondary synchronization signal block SSS and physical broadcast channel PBCH) needs to be received first, cell synchronization is obtained, and a broadcast channel PBCH is received to obtain a cell broadcast message. The terminal receives SSBs with a default period of 20ms, and in each period, multiple SSBs may be transmitted, where the SSBs have different SSB indexes, and may correspond to different beam directions, so as to cover terminals in different locations of the cell.

The transmission time interval of the PBCH is 80ms, the broadcast information content of every 80ms may be different, the broadcast information in 80ms is unchanged, four times of transmission are performed at intervals of 20ms, and up to 4 times of transmission can be combined for a terminal with poor channel condition so as to achieve the purpose of reliably demodulating the PBCH.

The internet of things scene is one of important application scenes of 5G, and how to support the internet of things service through the system design of NR is one of research directions of 5G. The internet of things scenario generally requires a larger coverage, so if one wants to support the internet of things service in NR, a coverage enhancement design is required.

The existing NB-IoT system is a communication standard supporting internet of things service on a 4G basis, in order to support large coverage, a synchronous channel, a broadcast channel, a service channel and a control channel are all set for coverage enhancement, and the basic idea is to obtain combining gain through more transmission opportunities and enhance coverage.

In addition, there is also a need for an ebb scenario that requires enhanced coverage for certain beam directions, in which case coverage enhancement designs are also required for transmission in the direction corresponding to certain SSBs. For convenience of description hereinafter, the coverage enhancement scenario requirements are collectively referred to.

Based on the existing NR, the terminal receives the PBCH and merges 4 times at most in each PBCH transmission time interval. The coverage of the broadcast channel (e.g. PBCH carrying MIB, PDCCH carrying SIB1 scheduling information, PDSCH carrying SIB 1) needs to be extended, more merging is needed, and the existing design mechanism of NR cannot support.

Disclosure of Invention

The invention provides an information indicating method, a detecting method, network equipment and a terminal, which are used for improving the coverage gain required by the terminal for initial cell search.

In order to solve the technical problems, the embodiment of the invention provides the following scheme:

an information indicating method applied to a network device, the method comprising:

transmitting indication information to a terminal, wherein the indication information is used for indicating at least one of the following information:

the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronous signal block SSB are predefined/preconfigured values;

A transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1;

the transmission period of the SSB is a predefined value;

a transmission period of the SSB;

the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined value;

the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1;

the SSB indices may be combined within each field or have the same quasi co-sited QCL.

Optionally, when the indication information indicates different values of the transmission period of the PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1, the indication information is represented by different indication sequences or different cyclic shifts of the same sequence.

Optionally, different values of the transmission period of the SSB are represented by different indication sequences or different cyclic shifts of the same sequence.

Optionally, when the indication information indicates different values of the PBCH, the type0-PDCCH search space or the SIB1 repeating transmission time interval, the indication information is represented by different indication sequences or different cyclic shifts of the same sequence.

Optionally, the indication information indicates SSB indexes that can be combined in each field, or SSB indexes with the same quasi co-located QCL, which are represented by different indication sequences or different cyclic shifts of the same sequence.

Optionally, the index indicating the SSB that can be combined includes: the index indicating the SSBs that can be merged is an index of a plurality of SSBs having different indexes; or, a predefined SSB index group is indicated, and the transmission of a primary synchronization signal PSS/secondary synchronization signal SSS or PBCH or type0-PDCCH or a system information block SIB1 corresponding to the SSB index in the same group can be combined; or, indicating the number of SSB indexes that can be combined and the combinable SSB index value; or, indicating the number of SSB index packets which can be combined and the grouping condition;

the indicating information indicating SSB indexes having the same quasi co-located QCL includes: an index indicating a plurality of SSBs having different indices of quasi-co-located QCL within one SSB period; or, indicating the number of SSB indexes with quasi-co-located QCL and the SSB index value with quasi-co-located QCL in one SSB period; alternatively, the number of SSB index packets with quasi-co-located QCL and the packet status are indicated.

Optionally, sending indication information to the terminal includes:

transmitting indication information to a terminal through adjacent resources of time-frequency resources of the SSB where the primary synchronization signal PSS is located in the frequency domain; or,

and sending indication information to the terminal through a half frame different from the SSB transmission.

Optionally, when sending the indication information to the terminal through a field different from the SSB transmission, the relative time-frequency resource position of the indication information in each field is the same as all or part of the relative time-frequency resource position of the SSB in each field.

Optionally, the indication information occupies symbols corresponding to the primary synchronization signal PSS and the secondary synchronization signal SSS in the SSB, or occupies 4 symbols of the SSB.

The embodiment of the invention also provides an information detection method, which is applied to the terminal, and comprises the following steps:

detecting indication information sent by the network equipment, wherein the indication information is used for indicating at least one of the following information: the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronous signal block SSB are predefined/preconfigured values; a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; the transmission period of the SSB is a predefined value; a transmission period of the SSB; the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined value; the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; SSB indexes that can be combined within each field or SSB indexes with the same quasi-co-located QCL;

And detecting the information of the SSB according to the indication information.

Optionally, when the indication information indicates different values of the transmission period of the PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1, the indication information is represented by different indication sequences or different cyclic shifts of the same sequence;

the different values of the transmission period of the SSB are represented by different indication sequences or different cyclic shifts of the same sequence;

when the indication information indicates different values of the PBCH, the type0-PDCCH search space or the repeated transmission time interval of the SIB1, the indication information is represented by different indication sequences or different cyclic shifts of the same sequence;

the indication information indicates SSB indexes which can be combined in each field or SSB indexes with the same quasi-co-located QCL, and the SSB indexes are represented by different indication sequences or different cyclic shifts of the same sequence.

Optionally, after detecting the information according to the indication information, the method further includes: if indexes of a plurality of SSBs of the same index are detected, PBCH in the plurality of SSBs are combined.

Optionally, after detecting the information according to the indication information, the method further includes: PBCH in SSB in the same index packet is merged.

Optionally, the detection method further includes: and merging the type0-PDCCH and the SIB1 corresponding to the SSB of the merged PBCH.

Optionally, detecting the indication information sent by the network device includes:

detecting the indication information on adjacent resources of the time-frequency resource where the primary synchronization signal PSS of the SSB is located in the frequency domain; or,

the indication information is detected on a different half frame than the SSB transmission.

Optionally, when the indication information is detected on a different field from the SSB transmission, the relative time-frequency resource position of the indication information in each field is the same as all or part of the relative time-frequency resource position of the SSB in each field.

The embodiment of the invention also provides a network device, which comprises:

a transceiver for transmitting indication information to a terminal, the indication information being used for indicating at least one of the following information:

the transmission period of the SSB is a predefined value;

a transmission period of the SSB;

Optionally, the transceiver is specifically configured to: transmitting indication information to a terminal through adjacent resources of time-frequency resources of the SSB where the primary synchronization signal PSS is located in the frequency domain; or sending indication information to the terminal through a half frame different from the SSB transmission.

The embodiment of the invention also provides a terminal, which comprises:

a transceiver, configured to detect indication information sent by a network device, where the indication information is used to indicate at least one of the following information: the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronous signal block SSB are predefined/preconfigured values; a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; the transmission period of the SSB is a predefined value; a transmission period of the SSB; the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined value; the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; SSB indexes that can be combined within each field or SSB indexes with the same quasi-co-located QCL;

The transceiver is further configured to detect information of the SSB according to the indication information.

Optionally, the terminal further includes: a processor, configured to, when indexes of a plurality of SSBs with the same index are detected, combine PBCHs in the SSBs; or,

merging PBCH in SSB in the same index group; or,

and merging the type0-PDCCH and the SIB1 corresponding to the SSB of the merged PBCH.

Optionally, the transceiver is specifically configured to:

The embodiment of the invention also provides a communication device, which comprises: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.

Embodiments of the present invention also provide a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform a method as described above.

The scheme of the invention at least comprises the following beneficial effects:

according to the scheme, the indication information is sent to the terminal and used for indicating at least one of the following information: the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronous signal block SSB are predefined/preconfigured values; a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; the transmission period of the SSB is a predefined value; a transmission period of the SSB; the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined value; the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; the SSB indices may be combined within each field or have the same quasi co-sited QCL. Therefore, the coverage gain required by the terminal for initial cell search can be improved, and the service requirement in the coverage enhancement mode is met.

Drawings

FIG. 1 is a flow chart of an information indication method of the present invention;

FIG. 2 is a schematic diagram showing indication information on both sides of the PSS;

fig. 3 is a schematic diagram of transmission of indication information using a different field than SSB transmission;

FIG. 4 is a flow chart of a method for detecting information according to the present invention;

FIG. 5 is a schematic diagram of a network device according to the present invention;

fig. 6 is a schematic diagram of the architecture of the terminal of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As shown in fig. 1, an embodiment of the present invention further provides a method for indicating information, applied to a network device, where the method includes:

step 11, sending indication information to the terminal, wherein the indication information is used for indicating at least one of the following information:

1) The transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronous signal block SSB are predefined/preconfigured values;

2) A transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1;

3) The transmission period of the SSB is a predefined value;

4) A transmission period of the SSB;

5) The repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined value;

6) The physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1;

7) The SSB indices may be combined within each field or have the same quasi co-sited QCL.

Here, by predefining the transmission period of the PBCH, the number of periods that the PBCH needs to combine is determined according to the requirement of coverage enhancement, for example, the existing PBCH (carrying MIB information) is an 80ms period, and coverage is required to be enhanced by 9dB, so that the period of the PBCH can be increased to 640ms, and thus the number of PBCH combining times can be increased by 8 times, so that coverage of 9dB is increased at maximum.

Meanwhile, since the content carried by the PBCH in the period T is unchanged (to keep the load of the PBCH unchanged, some contents that change with the change of the SFN (system frame number) in the period need to be limited, for example, the corresponding bits keep a fixed value), the type0-PDCCH carried by the search space of the corresponding transmission type0-PDCCH (i.e. the physical downlink control channel used for carrying the scheduling information of the scheduling SIB 1) is the same in each transmission content of the PBCH and the same period, and then the type0-PDCCH in the period of the PBCH can also be combined and demodulated. The Common search space set of Type0-PDCCH is the search space of the scheduling PDCCH of SIB1 configured by pdfch-ConfigSIB 1 in MIB, or the search space of SIB1 configured in PDCCH-Config Common or the search space of searchspace 0.

For the initial access phase, the search space of the scheduling PDCCH of SIB1 is mainly configured by PDCCH-ConfigSIB1 in the MIB.

Meanwhile, by predefining the transmission period of SIB1 (i.e. RMSI), the transmission period of SIB1 in the existing NR is 160ms, which is 2 times of the MIB period, SIB1 is repeatedly transmitted multiple times in the transmission period of SIB1, and the default SIB1 repeated transmission period is 20ms (default transmission repetition periodicity), so that repeated transmissions each time in the transmission period of SIB1 can be combined for demodulation.

Meanwhile, the transmission period of the SSB, the physical broadcast channel PBCH, the type0-PDCCH search space, or the repeated transmission time interval of the system information block SIB1, which is predefined to be smaller, may be increased by increasing the number of repetitions within the same time, such as detecting the SSB at a time interval of 5ms or 10ms (corresponding to detecting according to the SSB transmission period of 5ms or 10 ms), and may also be increased by increasing the number of PBCH, type0-PDCCH, SIB1 detected within 80ms, by combining the performance improvement.

For the predefined manner, the transmission period of the PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1 are predetermined specific period values, and the period corresponding to a certain coverage enhancement requirement is unchanged, and by sending the indication information, the terminal can be instructed to identify that the transmission period of the PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1 are the period values under the coverage enhancement requirement. I.e. a predefined period value is indicated by means of an indication message.

Indicating the transmission period of a Physical Broadcast Channel (PBCH), the transmission period of a type0-PDCCH search space and/or the transmission period of SIB1 through indication information; a transmission period of the SSB; the physical broadcast channel PBCH, type0-PDCCH search space, or the repeated transmission time interval of the system information block SIB1 increases flexibility of the selectable period. That is, multiple values are defined for the transmission period or the repeated transmission time interval, and different values of the transmission period or the repeated transmission time interval are determined through different values of the indication information, so that different coverage enhancement requirements can be realized in this way.

In an embodiment of the present invention, the indication information indicates different values of the PBCH transmission period, the type0-PDCCH search space transmission period and/or the SIB1 transmission period, which are represented by different indication sequences or different cyclic shifts of the same sequence.

For example, different indication messages may correspond to different PBCH transmission periods, type0-PDCCH search space transmission periods and/or SIB1 transmission periods, e.g. a value of 1 indicates that the SSB detection period is 5ms, a value of 2 indicates 10ms, and a value of 3 indicates 20ms, i.e. the existing detection period.

The different values of the transmission period of the SSB are represented by different indication sequences or different cyclic shifts of the same sequence. Different indication messages may correspond to different values of the transmission period of the SSB, for example, a value of 1 indicates that the SSB detection period is 5ms, a value of 2 indicates 10ms, and a value of 3 indicates 20ms.

And when the indication information indicates different values of the PBCH, the type0-PDCCH search space or the repeated transmission time interval of the SIB1, the indication information is represented by different indication sequences or different cyclic shifts of the same sequence.

for example, a predefined SSB index packet, the primary synchronization signal PSS/secondary synchronization signal SSS or PBCH corresponding to the SSB index within the same packet may be combined. Specifically, the number of SSB candidates actually transmitted in each field (half frame with SS/PBCH blocks) is predefined, and the grouping of SSB index in the SSB index actually transmitted is predefined. Assuming that the maximum number of SSB candidates in each field of the current frequency band is Lmax=8, predefining that the number of SSB candidates actually transmitted in the coverage enhancement mode is equal to Lmax; SSB index0, SSBindex1, SSB index2, SSBindex3, SSB index4, SSBindex5, SSB index6, SSBindex7, respectively.

And all SSB candidates are subjected to predefined grouping, the number of groups is 2, the combination of PBCH (physical downlink shared channel) which can be carried among SSB in the same group, the combination of corresponding type0-PDCCH and SIB 1;

Group 1：SSB index0，SSBindex1，SSB index2，SSBindex3；

Group 2：SSB index4，SSBindex5，SSB index6，SSBindex7.

in case of indicating a predefined SSB index packet, a predefined packet situation can be obtained by identifying the indication information. By identifying the index of the current SSB, the packet corresponding to the SSB can be judged, so that the SSB in the packet can be combined and detected, and the detection performance of the PBCH, the type0-PDCCH and the SIB1 is enhanced.

In another embodiment of the present invention, the number of SSB indexes that can be merged and the value of the combinable SSB indexes are indicated; or, indicating the number of SSB index packets which can be combined and the grouping condition;

for example, the packet situation is indicated by different values of the indication message:

taking the transmission of L SSBs as an example, different packet combining cases are predefined:

case 1: all L SSB index units can be combined;

case 2:L SSB index groups are divided into two groups, and each group can be combined; the first L/2 SSB indexes are in a first group, and the second L/2 SSB indexes are in a second group;

case 3: the L SSB index groups are divided into four groups, and each group can be combined; the first L/4 SSB indexes are in a first group, and the later L/4 SSB indexes are in a second group; the L/4 SSB indexes after that are in the third group; the last L/4 SSB indexes are the fourth group.

case 4:L SSB index are divided into eight groups, and each group can be combined; SSB index is uniformly divided into groups 1, 2, … …, 8 from small to large.

The terminal can be indicated to be capable of carrying out combination detection on the number of SSB indexes and corresponding SSB index values by corresponding different cases of different values of the indication message. Or the indicated number of packets and the packet condition. Here, the merging means that the terminal regards the PBCH, type0-PDCCH, SIB1 transmission in SSB with corresponding SSB index as repetition, similar to multiple repetition of PBCH in 80ms of NR in R15, which can be demodulated together, enhancing reliability.

The above embodiment is equally applicable to the case where the indication information indicates SSB indexes with the same quasi-co-located QCL, by replacing the case where SSB indexes indicating that merging is possible in the above embodiment with SSB indexes indicating that they have the same quasi-co-located QCL. All packets that can be combined correspond to SSB index packets with the same quasi co-located QCL.

In an embodiment of the present invention, the step 11 may include:

step 111, sending indication information to a terminal through a resource adjacent to a time-frequency resource where a primary synchronization signal PSS of the SSB is located in a frequency domain; or,

and step 112, transmitting indication information to the terminal through a field frame different from the SSB transmission.

In the above step 111, as shown in fig. 2, by sending indication messages on both sides of the PSS, an indication of at least one of the following functions is achieved: indicating to perform detection of the PBCH according to a transmission period of the predefined PBCH, or performing detection of the SIB1 according to a transmission period of the predefined SIB1, or performing detection of the type0-PDCCH according to a transmission period of the predefined type 0-PDCCH;

and the UE recognizes that the current working is in the coverage enhancement mode by detecting the message, then uses a pre-defined PBCH period in the coverage enhancement mode to demodulate the PBCH, and detects the type0-PDCCH in the period of the type0-PDCCH and detects SIB1 information in the period of the SIB 1. Here, the transmission period of the PBCH is 160ms or 320ms or 640ms. Detection is performed according to a predefined SSB transmission period, for example according to a SSB period of 5 ms; namely, the detection of the PBCH is carried out corresponding to more repetition times in 80ms of the PBCH.

The terminal can identify the PBCH corresponding to the SSB index and can perform combining demodulation. The SSB index actually transmitted is obtained by reading the content of the PBCH, but the PBCH is not acquired at this time, and thus it is also impossible to acquire which SSB index was actually transmitted. If the SSB index is also combined without transmission, noise interference is brought about. The SSB index actually transmitted is obtained by detecting the message.

The index indicating the SSB that can be merged includes: the index indicating the SSBs that can be merged is an index of a plurality of SSBs having different indexes; or, a predefined SSB index group is indicated, and the transmission of a primary synchronization signal PSS/secondary synchronization signal SSS or PBCH or type0-PDCCH or a system information block SIB1 corresponding to the SSB index in the same group can be combined; or, indicating the number of SSB indexes that can be combined and the combinable SSB index value; or, indicating the number of SSB index packets which can be combined and the grouping condition; alternatively, the indicating information indicates that SSB indexes having the same quasi co-located QCL include: an index indicating a plurality of SSBs having different indices of quasi-co-located QCL within one SSB period; or, indicating the number of SSB indexes with quasi-co-located QCL and the SSB index value with quasi-co-located QCL in one SSB period; alternatively, the number of SSB index packets with quasi-co-located QCL and the packet status are indicated.

Here, the combinable SSB index refers to that transmission of the primary synchronization signal PSS/secondary synchronization signal SSS or PBCH or type0-PDCCH or the system information block SIB1 corresponding to the SSB index may be combined.

The network side increases the transmission power of the message, and the UE can more easily recognize which SSB indexes are useful signals. The same content is sent on both sides of the PSS, for example, the same sequence is repeated on both sides, and by combining the sequences and performing correlation detection, it can be obtained whether the SSB index is sent or visible to the UE. Since the content of the PBCH is the same on different SSB indexes within one and the same SSB period, there is a gain for combining as long as the UE is able to receive, or the energy value, the sequence correlation value is greater than a certain threshold, regardless of whether its beam is directed to the UE, even if the signal is weak. After the UE synchronizes and obtains the cell ID, it can obtain the SSB index through the DMRS of the PBCH, and detect the information at the position corresponding to the other SSB index to obtain whether the corresponding SSB index transmits the SSB. Therefore, whether the combination of PBCH carried by SSB index can be carried out or not and whether the combination of type0-PDCCH and SIB1 corresponding to SSB index can be carried out or not is judged.

In a specific implementation, the SSB index may be obtained through the DMRS of the PBCH, and PSS and SSS of other SSB indexes are further detected, for example, by the size of the correlation peak, to determine whether other SSB indexes are transmitted. The advantage of this scheme is that the increase of the detection probability can be achieved by increasing the power of the information only, or by repeated transmission of the information on both sides of the PSS. The identification of which SSB indices may be subject to merge detection may also be predefined or preconfigured.

In step 112, as shown in fig. 3, the indication information is transmitted using a different field (5 ms) from the SSB transmission, and the relative time-frequency resource position of the indication information in each field is the same as the relative time-frequency resource position of the SSB in each field. One is to occupy only symbols corresponding to PSS and SSS; the other is to occupy 4 symbols of SSB to transmit indication information.

Specifically, when SSB uses a 20ms periodic transmission, it only takes one of the 5ms fields in 20ms to transmit all SSB indices. Taking fig. 3 as an example, where the subcarrier spacing is 15KHz and a maximum of 4 SSBs are transmitted per field, the first symbol index of each SSB candidate in 5ms satisfies {2,8} +14·n, n=0, 1, i.e., in the first 2 slots, the starting symbol positions in each slot are 2 and 8.

The indication information may be transmitted in other 5ms fields within 20ms, and the slot and symbol positions within the other 5ms fields are the same as the relative slot positions of the SSB within the 5ms in which it is located. For example, SSB transmissions are located in the 1 st field within 20ms, and the indication information is located in the 2 nd field. Also located in its first 2 slots within the 2 th 5ms half frame are the starting symbol positions in each slot, also 2 and 8.

Since SSB has 4 symbols, the 1 st and 3 rd symbols transmit PSS and SSS, in one case, the indication information is transmitted using the symbol and frequency domain resource positions of PSS and SSS among the 4 symbols corresponding to SSB of different half frames. The second case is to transmit the indication information using 4 symbols, and the second case can obtain more transmission opportunities, so that the transmission of the indication information is more reliable. For the first and second cases, the indication information may also occupy 20 RBs of the SSB bandwidth transmission.

Since the indication information can be repeated for a plurality of times at the corresponding position of one SSB, in the case of transmitting a maximum of 4 SSBs in the SSB period, the indication information can be transmitted using only a part of the positions of the corresponding positions of SSBs within the 2 nd 5 ms. For example, only the corresponding position transmissions of 2 SSBs in one slot are used instead of the corresponding position transmissions of 4 SSBs in 2 slots.

Here, the description is given taking the 2 nd 5ms as an example, and the SSB corresponding position of the 3 rd and 4 th 5ms fields may be used for transmission.

In this case, when the terminal successfully detects the indication message transmitted from both sides of the PSS or transmits the indication message using a different half frame (5 ms) from SSB transmission, the terminal recognizes a transmission period or a transmission time interval or of the PBCH, type0-PDCCH and/or SIB 1. Or further can identify SSB indexes which can be subjected to combination detection in each half frame containing SSB; different periods mean different repetition times, and by detecting the information, it can be judged that the current system broadcast channel adopts a period larger than NR, more repetition transmission times can be carried out, and combination and demodulation among more repetition transmission can be carried out, so that the coverage of the broadcast channel is improved, and the purpose of coverage enhancement is realized.

According to the embodiment of the invention, 4 RBs on two sides of the PSS are fully utilized, so that the expenditure of indication information is saved; simultaneously, SSB indexes which can be combined in an SSB period can be indicated; the detection performance of the broadcast information is enhanced. The method has the advantages that the indication information is transmitted by using the half frames (5 ms) different from the SSB transmission, the semi-static frame structure configuration can be well adapted, the transmission position of the corresponding SSB cannot be set to be uplink, and when the semi-static frame structure period is 5ms, the corresponding position of the different half frames is correspondingly set to be downlink, so that the transmission of the indication information is convenient.

As shown in fig. 4, an embodiment of the present invention further provides a method for detecting information, applied to a terminal, where the method includes:

step 41, detecting indication information sent by the network device, where the indication information is used to indicate at least one of the following information: the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronous signal block SSB are predefined/preconfigured values; a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; the transmission period of the SSB is a predefined value; a transmission period of the SSB; the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined value; the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; SSB indexes that can be combined within each field or SSB indexes with the same quasi-co-located QCL;

and step 42, detecting the information of the SSB according to the indication information.

All the implementation modes in the method embodiment of the network equipment side are applicable to the method embodiment of the terminal side, and the same technical effects can be achieved.

As shown in fig. 5, an embodiment of the present invention further provides a network device 50, including:

a transceiver 51 for transmitting indication information to the terminal, the indication information being used for indicating at least one of the following information:

the transmission period of the SSB is a predefined value;

a transmission period of the SSB;

Optionally, the transceiver 51 is specifically configured to: transmitting indication information to a terminal through adjacent resources of time-frequency resources of the SSB where the primary synchronization signal PSS is located in the frequency domain; or sending indication information to the terminal through a half frame different from the SSB transmission.

It should be noted that, the network device is a network device corresponding to the method on the network device side, and all the implementation manners in the method embodiment are applicable to the embodiment of the network device, so that the same technical effects can be achieved. The network device 50 may further include: the processor 52, the memory 53, the transceiver 51 and the processor 52, and the transceiver 51 and the memory 53 may be connected through a bus interface, the function of the transceiver 51 may be implemented by the processor 52, and the function of the processor 52 may also be implemented by the transceiver 51.

As shown in fig. 6, an embodiment of the present invention further provides a terminal 60, including:

a transceiver 61 for detecting indication information sent by the network device, the indication information being used for indicating at least one of the following information: the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronous signal block SSB are predefined/preconfigured values; a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; the transmission period of the SSB is a predefined value; a transmission period of the SSB; the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined value; the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; SSB indexes that can be combined within each field or SSB indexes with the same quasi-co-located QCL;

The transceiver 61 is further configured to detect information of the SSB according to the indication information.

Optionally, the terminal further includes: a processor 62, configured to, when detecting indexes of SSBs with the same index, combine PBCHs in the SSBs; or merging PBCH in SSB in the same index group; or merging the type0-PDCCH corresponding to the SSB of the merged PBCH and the SIB 1.

Optionally, the transceiver 61 is specifically configured to: detecting the indication information on adjacent resources of the time-frequency resource where the primary synchronization signal PSS of the SSB is located in the frequency domain; alternatively, the indication information is detected on a different half frame than the SSB transmission.

It should be noted that, the terminal is a terminal corresponding to the method of the terminal, and all implementation manners in the embodiment of the method are applicable to the embodiment of the terminal, so that the same technical effects can be achieved. The terminal 60 may further include: the memory 63, the transceiver 61 and the processor 62, and the transceiver 61 and the memory 63 may be connected through a bus interface, the function of the transceiver 61 may be implemented by the processor 62, and the function of the processor 62 may be implemented by the transceiver 61.

The embodiment of the invention also provides a communication device, which comprises: a processor, a memory storing a computer program, where the computer program when executed by the processor executes the network device side method shown in fig. 1, and all implementation manners in the above method embodiment are applicable to the embodiment, and the same technical effect can be achieved; or when the computer program is run by a processor, the terminal side method shown in fig. 2 is executed, and all the implementation manners in the above method embodiment are applicable to the embodiment, so that the same technical effect can be achieved.

Embodiments of the present invention also provide a computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform a method as described above. All the implementation manners in the method embodiment are applicable to the embodiment, and the same technical effects can be achieved.

According to the embodiment of the invention, 4 RBs on two sides of the PSS are fully utilized, and the expenditure of energy-saving indication information is saved; simultaneously, SSB index which can be combined in the SSB period can be indicated; the detection performance of the broadcast information is enhanced.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

Furthermore, it should be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order of description, but are not necessarily performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those of ordinary skill in the art that all or any of the steps or components of the methods and apparatus of the present invention may be implemented in hardware, firmware, software, or a combination thereof in any computing device (including processors, storage media, etc.) or network of computing devices, as would be apparent to one of ordinary skill in the art after reading this description of the invention.

The object of the invention can thus also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention can thus also be achieved by merely providing a program product containing program code for implementing said method or apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is apparent that the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. The steps of executing the series of processes may naturally be executed in chronological order in the order described, but are not necessarily executed in chronological order. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. A method of indicating information, for use with a network device, the method comprising:

the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronization signal block SSB are predefined/preconfigured corresponding coverage enhanced period values;

a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; wherein the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1 includes a period corresponding to a coverage enhancement requirement;

the transmission period of the SSB is a predefined period value corresponding to coverage enhancement;

a transmission period of the SSB, wherein the transmission period of the SSB includes a period corresponding to a coverage enhancement requirement;

the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined transmission time interval value corresponding to coverage enhancement;

The physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; wherein the selectable time intervals comprise time intervals corresponding to coverage enhancement requirements;

2. The method according to claim 1, wherein the indication information indicates different values of the PBCH transmission period, the type0-PDCCH search space transmission period and/or the SIB1 transmission period, which are indicated by different indication sequences or different cyclic shifts of the same sequence.

3. The method of claim 1, wherein the different values of the SSB transmission period are represented by different indication sequences or different cyclic shifts of the same sequence.

4. The method according to claim 1, wherein the indication information indicates different values of the PBCH, type0-PDCCH search space or SIB1 repetition transmission time interval, which are indicated by different indication sequences or different cyclic shift of the same sequence.

5. The method according to claim 1, wherein the indication information indicates SSB indexes that can be combined in each field or SSB indexes having the same quasi co-located QCL, which are represented by different indication sequences or different cyclic shifts of the same sequence.

6. The method of indicating information according to claim 5, wherein the indicating information indicates an index of SSBs that can be combined includes: the index indicating the SSBs that can be merged is an index of a plurality of SSBs having different indexes; or, a predefined SSB index group is indicated, and the transmission of a primary synchronization signal PSS/a secondary synchronization signal SSS or a PBCH or a type0-PDCCH or a system information block SIB1 corresponding to the SSB index in the same group can be combined; or, indicating the number of SSB indexes that can be combined and the combinable SSB index value; or, indicating the number of SSB index packets which can be combined and the grouping condition;

7. The method for indicating information according to any one of claims 1 to 6, wherein transmitting the indication information to the terminal includes:

8. The method according to claim 7, wherein when the indication information is transmitted to the terminal through a different field from the SSB transmission, the relative time-frequency resource position of the indication information in each field is the same as the total or partial position of the SSB in each field.

9. The method according to claim 8, wherein the indication information occupies symbols corresponding to a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB or occupies 4 symbols of the SSB.

10. An information detection method, which is characterized by being applied to a terminal, comprises the following steps:

detecting indication information sent by the network equipment, wherein the indication information is used for indicating at least one of the following information: the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronization signal block SSB are predefined/preconfigured corresponding coverage enhanced period values; a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; wherein the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1 includes a period corresponding to a coverage enhancement requirement; the transmission period of the SSB is a predefined period value corresponding to coverage enhancement; a transmission period of the SSB, wherein the transmission period of the SSB includes a period corresponding to a coverage enhancement requirement; the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined transmission time interval value corresponding to coverage enhancement; the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; wherein the selectable time intervals comprise time intervals corresponding to coverage enhancement requirements; SSB indexes that can be combined within each field or SSB indexes with the same quasi-co-located QCL;

11. The method for detecting information according to claim 10, wherein,

the indication information indicates different values of the transmission period of the PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1, and the indication information is represented by different indication sequences or different cyclic shifts of the same sequence;

12. The method of claim 11, wherein the indicating information indicates an index of SSBs that can be combined comprises: the index indicating the SSBs that can be merged is an index of a plurality of SSBs having different indexes; or, a predefined SSB index group is indicated, and the transmission of a primary synchronization signal PSS/a secondary synchronization signal SSS or a PBCH or a type0-PDCCH or a system information block SIB1 corresponding to the SSB index in the same group can be combined; or, indicating the number of SSB indexes that can be combined and the combinable SSB index value; or, indicating the number of SSB index packets which can be combined and the grouping condition;

13. The method for detecting information according to claim 12, further comprising, after detecting information according to the indication information:

if indexes of a plurality of SSBs of the same index are detected, PBCH in the plurality of SSBs are combined.

14. The method for detecting information according to claim 12, further comprising, after detecting information according to the indication information:

PBCH in SSB in the same index packet is merged.

15. The method for detecting information according to claim 13 or 14, characterized by further comprising:

16. The method for detecting information according to any one of claims 10 to 14, wherein detecting the indication information sent by the network device includes:

17. The method according to claim 16, wherein the relative time-frequency resource position of the indication information in each field is the same as the relative time-frequency resource position of the SSB in each field when the indication information is detected in a field different from the SSB transmission.

18. The method according to claim 17, wherein the indication information occupies symbols corresponding to a primary synchronization signal PSS and a secondary synchronization signal SSS in the SSB, or occupies 4 symbols of the SSB.

19. A network device, comprising:

20. The network device of claim 19, wherein the network device,

21. The network device of claim 20, wherein the indication information indicates an index of SSBs that can be combined comprises: the index indicating the SSBs that can be merged is an index of a plurality of SSBs having different indexes; or, a predefined SSB index group is indicated, and the transmission of a primary synchronization signal PSS/a secondary synchronization signal SSS or a PBCH or a type0-PDCCH or a system information block SIB1 corresponding to the SSB index in the same group can be combined; or, indicating the number of SSB indexes that can be combined and the combinable SSB index value; or, indicating the number of SSB index packets which can be combined and the grouping condition;

22. The network device according to any of the claims 19 to 21, wherein the transceiver is specifically configured to: transmitting indication information to a terminal through adjacent resources of time-frequency resources of the SSB where the primary synchronization signal PSS is located in the frequency domain; or sending indication information to the terminal through a half frame different from the SSB transmission.

23. A terminal, comprising:

a transceiver, configured to detect indication information sent by a network device, where the indication information is used to indicate at least one of the following information: the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the system information block SIB1 in the synchronization signal block SSB are predefined/preconfigured corresponding coverage enhanced period values; a transmission period of a physical broadcast channel PBCH, a transmission period of a type0-PDCCH search space and/or a transmission period of SIB 1; wherein the transmission period of the physical broadcast channel PBCH, the transmission period of the type0-PDCCH search space and/or the transmission period of the SIB1 includes a period corresponding to a coverage enhancement requirement; the transmission period of the SSB is a predefined period value corresponding to coverage enhancement; a transmission period of the SSB, wherein the transmission period of the SSB includes a period corresponding to a coverage enhancement requirement; the repeated transmission time interval of the physical broadcast channel PBCH, the type0-PDCCH search space or the system information block SIB1 is a predefined transmission time interval value corresponding to coverage enhancement; the physical broadcast channel PBCH, type0-PDCCH search space or the repeated transmission time interval of the system information block SIB 1; wherein the selectable time intervals comprise time intervals corresponding to coverage enhancement requirements; SSB indexes that can be combined within each field or SSB indexes with the same quasi-co-located QCL;

24. The terminal of claim 23, wherein the terminal comprises a base station,

25. The terminal of claim 24, wherein the indicating information indicates an index of SSBs that can be combined comprises: the index indicating the SSBs that can be merged is an index of a plurality of SSBs having different indexes; or, a predefined SSB index group is indicated, and the transmission of a primary synchronization signal PSS/a secondary synchronization signal SSS or a PBCH or a type0-PDCCH or a system information block SIB1 corresponding to the SSB index in the same group can be combined; or, indicating the number of SSB indexes that can be combined and the combinable SSB index value; or, indicating the number of SSB index packets which can be combined and the grouping condition;

26. The terminal of claim 25, further comprising:

a processor, configured to, when indexes of a plurality of SSBs with the same index are detected, combine PBCHs in the SSBs; or,

merging PBCH in SSB in the same index group; or,

27. The terminal according to any of the claims 23 to 25, characterized in that the transceiver is specifically adapted to: detecting the indication information on adjacent resources of the time-frequency resource where the primary synchronization signal PSS of the SSB is located in the frequency domain; alternatively, the indication information is detected on a different half frame than the SSB transmission.

28. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any one of claims 1 to 9, or the method of any one of claims 10 to 18.

29. A computer readable storage medium comprising instructions which, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 9 or the method of any one of claims 10 to 18.