CN112752280B

CN112752280B - SSB receiving method and device

Info

Publication number: CN112752280B
Application number: CN201911056733.6A
Authority: CN
Inventors: 夏亮; 王飞; 胡丽洁; 吴丹; 张轶
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: 2019-10-31
Filing date: 2019-10-31
Publication date: 2023-01-13
Anticipated expiration: 2039-10-31
Also published as: CN112752280A; WO2021083140A1

Abstract

The invention provides a method and a device for receiving an SSB (secure State broadcast), belonging to the technical field of wireless communication. The SSB receiving method is applied to a terminal and comprises the following steps: receiving a coverage enhancement indication message of network side equipment; determining a cell identification set and a coverage grade corresponding to the cell identification set according to the coverage enhancement indication message; acquiring an identifier of at least one first cell and a coverage level of the first cell, wherein the identifier of the first cell belongs to the cell identifier set; and determining a repeated sending mode of the synchronous signal block SSB corresponding to the first cell according to the coverage grade, and receiving the SSB according to the repeated sending mode. The technical scheme of the invention can reduce the access time delay and reduce the power consumption of the terminal.

Description

SSB receiving method and device

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for receiving an SSB.

Background

Coverage is enhanced by introducing a beam scanning mode in New Radio (NR) design, and a terminal selects a proper beam to access according to the position of the terminal. After the cell access is completed, the dedicated beam of the terminal can be further adopted to transmit the service channel, so that the advantages of large-scale antennas are fully utilized, and the requirement of NR wide coverage is met.

The related art proposes an NR hierarchical coverage design strategy, that is, support coverage enhancement of NR partial beam directions or all beam directions. In order to reuse the NR existing Synchronization Signal (SS)/Physical Broadcast Channel (PBCH) design as much as possible, in a layered coverage scenario, it may be considered to configure different Synchronization Signal Block (SSB) transmission formats at different frequency domain positions (e.g., synthesizer) of one carrier.

In order to enable the terminal to identify whether coverage enhancement is adopted in the current initial access process or not in the access process, the synchronization and the broadcast channel reception can be carried out according to the enhancement mode only when the coverage enhancement mode is confirmed to be adopted.

In the process, two modes are adopted according to the size of the synchronization delay:

mode 1: the method comprises the steps of detecting a synchronous channel, detecting a coverage enhancement indication message, identifying whether coverage enhancement can be carried out, and then detecting the PBCH and a subsequent channel.

Mode 2: the coverage enhancement indication message is detected first, and then the detection of the synchronous broadcast channel is carried out.

In the scheme 1, the synchronization channel cannot enjoy the benefit of coverage enhancement, so as the number of dB needed to be enhanced increases, the terminal needs to combine the synchronization signals of multiple SSB periods to obtain the accumulated synchronization signal energy, so that the time delay for acquiring synchronization is large, and meanwhile, as the synchronization window becomes long, the data to be buffered becomes large, and the benefit is that the detection of the coverage enhancement indication message is relatively simple, and the coverage enhancement indication message is detected only when the raster determining that the synchronization signal exists.

In the scheme 2, the coverage enhancement indication message is detected first, and the terminal searches the coverage enhancement indication message first, so that in order to avoid the defects of the scheme 1, the coverage enhancement indication message should be concentrated as much as possible, and the detection reliability is high.

The coverage enhancement indication message is at least used for indicating the coverage grade, the SSB repetition times are determined according to the coverage grade, and the terminal performs combination receiving on the corresponding SSB according to the SSB repetition times.

If the terminal does not receive the coverage enhancement indication message, the terminal receives the coverage enhancement indication message in a normal SSB receiving manner, but if a plurality of cells exist around the terminal, at least one of which sends the coverage enhancement indication message, the terminal is caused to respectively combine and receive SSBs of all the cells in a coverage enhancement manner, which causes the SSBs of the cells which do not perform coverage enhancement to be combined incorrectly or combined unnecessarily, thereby causing access failure, access delay to be increased, or power consumption of the terminal to be increased.

If there are multiple coverage enhancement cells with different coverage levels, the terminal may also receive the SSB of the cell with high coverage level in a combined reception mode with low coverage level, thereby resulting in access failure; or the terminal needs to respectively combine and receive the SSBs of each cell according to all possible coverage levels, thereby resulting in increased access delay, increased power consumption of the terminal, or increased complexity of the terminal.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a receiving method and apparatus for SSB, which can reduce access delay and reduce power consumption of a terminal.

To solve the above technical problem, embodiments of the present invention provide the following technical solutions:

the embodiment of the invention provides a method for receiving an SSB, which is applied to a terminal and comprises the following steps:

receiving a coverage enhancement indication message of network side equipment;

determining a cell identification set and a coverage grade corresponding to the cell identification set according to the coverage enhancement indication message;

acquiring an identifier of at least one first cell and a coverage level of the first cell, wherein the identifier of the first cell belongs to the cell identifier set;

and determining a repeated sending mode of the synchronous signal block SSB corresponding to the first cell according to the coverage grade, and receiving the SSB according to the repeated sending mode.

Optionally, the coverage enhancement indication message includes cell identifier set indication information, and also includes coverage level indication information corresponding to a cell identifier set indicated by the cell identifier set indication information.

Optionally, the obtaining the identifier of the first cell includes:

determining a second cell identity based on the detected primary synchronization signal PSS and secondary synchronization signal SSS;

and judging whether the second cell identifier belongs to the cell identifier set, and taking the cell corresponding to the second cell identifier as the first cell when the second cell identifier belongs to the cell identifier set.

Optionally, the obtaining the identifier of the first cell includes:

detecting a PSS and a SSS corresponding to a cell identifier contained in the cell identifier set;

an identity of the first cell is determined based on the detected PSS and SSS.

Optionally, the obtaining the coverage level of the first cell includes:

and taking the coverage grade corresponding to the cell identification set to which the identification of the first cell belongs as the coverage grade of the first cell.

Optionally, the repeated transmission manner includes at least one of the following:

the number of times of repeated transmission; repeatedly transmitting time domain resources; repeatedly transmitting the frequency domain resources; maximum number of repeated transmissions; the transmission pattern is repeated.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

Optionally, the coverage enhancement indication message further includes at least one of:

bandwidth part BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the coverage enhancement indication message is configured for at least one of:

BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the cell identity set employ joint coding or independent coding.

Optionally, the coverage enhancement indication message is received according to one of the following information:

a physical layer sequence;

the system broadcast message used for bearing the cell reselection information comprises at least one of a system broadcast message block 2, a system broadcast message block 3, a system broadcast message block 4 and a system broadcast message block 5;

RRC message for carrying SSB configuration information.

The embodiment of the invention also provides a method for receiving the SSB, which is applied to network side equipment and comprises the following steps:

and sending a coverage enhancement indication message to a terminal so that the terminal determines a cell identifier set and a coverage grade corresponding to the cell identifier set according to the coverage enhancement indication message.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the coverage enhancement indication message is sent according to one of the following information:

a physical layer sequence;

the system broadcast message for bearing the cell reselection information comprises at least one of a system broadcast message block 2, a system broadcast message block 3, a system broadcast message block 4 and a system broadcast message block 5;

RRC message for carrying SSB configuration information.

The embodiment of the invention also provides a receiving device of the SSB, which is applied to a terminal and comprises the following components:

a receiving module, configured to receive a coverage enhancement indication message of a network side device;

a determining module, configured to determine a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message;

an obtaining module, configured to obtain an identifier of at least one first cell and a coverage level of the first cell, where the identifier of the first cell belongs to the cell identifier set;

and the processing module is used for determining a repeated sending mode of the synchronous signal block SSB corresponding to the first cell according to the coverage grade and receiving the SSB according to the repeated sending mode.

Optionally, the coverage enhancement indication message includes cell identifier set indication information, and further includes coverage level indication information corresponding to a cell identifier set indicated by the cell identifier set indication information.

Optionally, the obtaining module is specifically configured to:

an identity of the first cell is determined based on the detected PSS and SSS.

Optionally, the determining module is specifically configured to:

Optionally, the repeated transmission mode includes at least one of the following:

the number of times of repeated transmission; repeatedly transmitting the time domain resource; repeatedly transmitting the frequency domain resources; maximum number of repeated transmissions; the transmission pattern is repeated.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of times of repeated transmission;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the receiving module receives the coverage enhancement indication message according to one of the following information:

a physical layer sequence;

RRC message for carrying SSB configuration information.

The embodiment of the invention also provides a receiving device of the SSB, which is applied to a terminal and comprises a processor and a transceiver,

the transceiver is used for receiving a coverage enhancement indication message of a network side device;

the processor is configured to determine a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message; acquiring an identifier of at least one first cell and a coverage level of the first cell, wherein the identifier of the first cell belongs to the cell identifier set; and determining a repeated sending mode of the SSB corresponding to the first cell according to the coverage grade, and receiving the SSB according to the repeated sending mode.

Optionally, the processor is specifically configured to:

an identity of the first cell is determined based on the detected PSS and SSS.

Optionally, the processor is specifically configured to:

the number of times of repeated transmission; repeatedly transmitting time domain resources; repeatedly transmitted frequency domain resources; maximum number of repeated transmissions; the transmission pattern is repeated.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

a carrier frequency.

BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the transceiver receives the coverage enhancement indication message according to one of the following information:

a physical layer sequence;

RRC message for carrying SSB configuration information.

An embodiment of the present invention further provides a receiving apparatus for an SSB, which is applied to a network side device, and includes:

a sending module, configured to send a coverage enhancement indication message to a terminal, so that the terminal determines, according to the coverage enhancement indication message, a cell identifier set and a coverage level corresponding to the cell identifier set.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of times of repeated transmission;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

the indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

a carrier frequency.

Optionally, the sending module is specifically configured to send the coverage enhancement indication message according to one of the following information:

a physical layer sequence;

RRC message for carrying SSB configuration information.

The embodiment of the invention also provides a receiving device of the SSB, which is applied to network side equipment and comprises a processor and a transceiver,

the transceiver is used for sending a coverage enhancement indication message to a terminal so that the terminal determines a cell identification set and a coverage grade corresponding to the cell identification set according to the coverage enhancement indication message.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of times of repeated transmission;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the transceiver is specifically configured to send the coverage enhancement indication message according to one of the following information:

a physical layer sequence;

RRC message for carrying SSB configuration information.

An embodiment of the present invention further provides a receiving device of an SSB, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps in the receiving method of SSB as described above.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps in the receiving method of the SSB as described above.

The embodiment of the invention has the following beneficial effects:

in the above scheme, the terminal receives a coverage enhancement indication message of the network side device, determines a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message, and acquires an identifier of at least one first cell and the coverage level of the first cell, where the identifier of the first cell belongs to the cell identifier set, determines a repeated sending mode of a synchronization signal block SSB corresponding to the first cell according to the coverage level, and receives the SSB according to the repeated sending mode. Therefore, the terminal receives the SSB according to the coverage enhancement indication message, so that the access delay can be reduced, the power consumption of the terminal can be reduced, and the complexity of the terminal can be reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic diagram of different SSB transmission formats configured at different frequency domain locations of a carrier;

fig. 2 is a flowchart illustrating a receiving method of an SSB applied to a terminal according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a receiving method of an SSB applied to a network side device according to an embodiment of the present invention;

fig. 4 is a block diagram illustrating a receiving apparatus of an SSB applied to a terminal according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a terminal according to an embodiment of the present invention;

fig. 6 is a block diagram of a receiving apparatus of an SSB applied to a network side device according to an embodiment of the present invention;

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

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can 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.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.

The techniques described herein are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A and GSM are described in the literature from an organization named "third Generation Partnership project" (3 rd Generation Partnership project,3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3 GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the methods described may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

In the NR deployment process, although the network planning is designed to perform deployment with seamless coverage as a target, due to differences in propagation environments in various directions in an actual deployment environment, for example, due to existence of a blocking object in a certain direction, propagation loss is large, and the problem of short coverage in a corresponding propagation direction cannot be avoided. Similar problems exist for in-building coverage where the received signal level at the terminals inside the building is low due to the building's penetration losses, while for the outside of the building where the propagation environment is relatively open, the distance that can be covered is much greater than the building's distance. In this case, the most straightforward coverage extension scheme is to add cells or deploy relay devices, etc. This is straightforward, but at the same time means higher equipment costs and maintenance costs.

Three application scenarios of NR are enhanced mobile broadband (eMBB), massive machine type communication (mtc), ultra-reliable, and low-latency communication (urrllc), and the related art fully considers the wide coverage and high-rate requirements of eMBB and the low-latency and high-reliability characteristics of uRLLC, but the consideration of low cost and large connection is relatively deficient, and although configurable terminal working bandwidth is also supported, the terminal access with small working bandwidth can be enabled, the overall demand based on eMBB is optimally designed, and the demand for larger and deeper coverage is not fully reflected. Meanwhile, the terminal of the internet of things has a large demand range for the speed, and a part of terminals of the internet of things have certain demand for the transmission speed while requiring large coverage. Therefore, considering different rate requirements comprehensively, from the perspective of system design, it should support more flexible bandwidth resource usage while supporting large coverage, rather than fixed narrowband resource system design. Meanwhile, for the design of mtc services, the NR protocol design should be reused as much as possible to enjoy the chip cost benefits brought by NR scale deployment.

Combining the above two scene requirements, a NR layered coverage design strategy is proposed, that is, coverage enhancement in a NR partial beam direction or a full beam direction is supported. The basic principle is to reuse the NR protocol, support backward compatibility, introduce coverage enhancement design in partial beam direction, and enhance coverage by protocol upgrade rather than device deployment. Meanwhile, the coverage enhancement design considers the low-cost requirement of the Internet of things, supports variable transmission rate, and supports the coverage enhancement of the whole cell by expanding the coverage enhancement in part of directions, thereby realizing the support of NR to the business of the Internet of things.

In the initial synchronization stage, the mtc user needs to combine and receive the synchronization and broadcast signals because of the need to obtain a large coverage gain. At present, the NR synchronization signal design can only support the merging of broadcast signals within 80ms at most, and according to the assumption that synchronization and broadcast signals are searched in a20 ms period when a terminal initially accesses, at most, a merging gain of 6dB can only be obtained, which is difficult to meet the coverage enhancement requirements of all wide-coverage users.

In order to reuse NR existing Synchronization Signal (SS)/Physical Broadcast Channel (PBCH) design as much as possible, under a layered coverage scenario, it may be considered that different Synchronization Signal Block (SSB) transmission formats are configured at different frequency domain positions (such as Syncraster) of a carrier, as shown in fig. 1, a normal SSB for full coverage is configured at frequency domain position 1, and at this time, beams corresponding to different SSB indexes may be different; in the case where the SSB for coverage enhancement is arranged at the frequency domain position 2, the beam corresponding to the different SSB index may be a repeatedly transmitted beam in a certain direction, and the terminal located under the coverage of the beam may search for the SSB at the frequency domain position 2, perform combined reception, and enjoy the gain of coverage enhancement.

In order to ensure that the terminal knows the format of the repeatedly transmitted SSB unambiguously, performs correct combination, and reuses the existing SSB design as much as possible, a new set of repeat indication signals can be introduced, which have the functions of time initial synchronization and repeat format indication.

For SSB-repeated formats, the merged reception of SSBs can be classified into the following categories:

(1) SSBs sent every 80ms are combined for reception.

(2) SSBs sent every 20ms within 80ms are merged and received;

the NR supports the SSBs under the same index between different 20ms within 80ms, which may be combined, and some indications may be added, so that the combining may be performed directly without blind detection by the terminal.

(3) SSBs sent every N ms within 20ms are merged and received;

the new indication signal may inform the terminal of the sending period N ms of the SSB, such as 5ms, 10ms, and 20ms, which correspond to 4 times, 2 times, and 1 time of merging for 20ms, respectively.

(4) And combining and receiving SSBs corresponding to different SSB indexes within 5 ms.

In order to enable the terminal to identify whether coverage enhancement is adopted in the current initial access process or not in the access process, the terminal can synchronize and receive the broadcast channel according to the enhancement mode only when the coverage enhancement mode is confirmed to be adopted.

In the process, two modes are adopted according to the size of the synchronous time delay:

In the scheme 1, the synchronization channel cannot enjoy the benefit of coverage enhancement, and therefore, as the number of dbs that needs enhancement increases, the terminal needs to combine the synchronization signals of multiple SSB periods to obtain the accumulated synchronization signal energy, so that the time delay for acquiring synchronization is longer, and meanwhile, as the synchronization window becomes longer, more data need to be buffered, and the benefit is that the detection of the coverage enhancement indication message is relatively simple, and the coverage enhancement indication message is detected only when the raster that has the synchronization signal is determined to exist.

In order to solve the above problem, embodiments of the present invention provide a receiving method and apparatus for SSB, which can reduce access delay and reduce power consumption of a terminal.

An embodiment of the present invention provides a method for receiving an SSB, which is applied to a terminal, and as shown in fig. 2, the method includes:

step 101: receiving a coverage enhancement indication message of network side equipment;

step 102: determining a cell identification set and a coverage grade corresponding to the cell identification set according to the coverage enhancement indication message;

step 103: acquiring an identifier of at least one first cell and a coverage level of the first cell, wherein the identifier of the first cell belongs to the cell identifier set;

step 104: and determining a repeated sending mode of the SSB corresponding to the first cell according to the coverage grade, and receiving the SSB according to the repeated sending mode.

In this embodiment, a terminal receives a coverage enhancement indication message of a network side device, determines a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message, and obtains an identifier of at least one first cell and the coverage level of the first cell, where the identifier of the first cell belongs to the cell identifier set, and determines a repeated sending manner of a synchronization signal block SSB corresponding to the first cell according to the coverage level, and receives the SSB according to the repeated sending manner. Therefore, the terminal receives the SSB according to the coverage enhancement indication message, so that the access delay can be reduced, the power consumption of the terminal can be reduced, and the complexity of the terminal can be reduced.

Optionally, the obtaining the identifier of the first cell includes:

an identity of the first cell is determined based on the detected PSS and SSS.

Optionally, the obtaining the coverage level of the first cell includes:

the number of times of repeated transmission; repeatedly transmitting the time domain resource; repeatedly transmitted frequency domain resources; maximum number of repeated transmissions; the transmission pattern is repeated.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

The coverage level indication information may include indication information of the number of repeated transmissions, the repeatedly transmitted time domain/frequency domain resources, the maximum number of repeated transmissions, and the repeated transmission pattern. Different coverage enhancement levels are configured to support different cells and different BWPs from cell to cell, rather than one determined coverage level (a design according to the maximum coverage level means more network resources). The coverage enhancement level needs to be carried in the coverage level indication information, and for the case of carrying SSBs with different repetition times in BWP, the carried information may correspond to the repetition times. Such as 2 times, 4 times, 8 times, 16 times of 8230 \ 8230;, and the like.

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute Radio Frequency Channel Number (ARFCN);

the carrier frequency.

BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

The cell ID set indication information may be any one of the following:

or

Wherein

n, the set of cell IDs contains the satisfaction

Is

Wherein n is more than or equal to 0<N, N and N are integers

m, cell ID set contains the satisfaction

N is an integer predefined or configured by network side equipment, M is an integer greater than or equal to 0 and less than or equal to M, and M is

Is divided by N and rounded.

Taking the example of carrying 4 repetition times and 3 different sets of cell ID ranges, the coverage enhancement indication message needs to be able to carry 12 kinds of information, which can be distinguished by 12 orthogonal sequences.

Such as: 0,1,2,3 for the cell PSS

Is 0, corresponding to 2,4,8,16 times of repetition respectively;

4,5,6,7 corresponding to the cell PSS

1, corresponding to 2,4,8,16 times of repetition respectively;

8,9,10,11 for cell PSS

The number of the repeats was 2, and was 2,4,8,16.

Optionally, the determining, according to the coverage enhancement indication message, a cell identity set includes at least one of:

determining a first partial identity from the coverage enhancement indication message

Or second part identification

A first part of the cell identifiers in the cell identifier set

Are all the same or are identified by a second part

All the same, cell identifiers in the cell identifier set

Determining n, n is equal to the coverage enhancement indication message

Wherein, N is an integer predefined or configured by network side equipment, and N is an integer which is greater than or equal to 0 and less than N;

determining m, m being equal to m, from the coverage enhancement indication message

Wherein N is

An integer predefined or configured by network side equipment, M is an integer greater than or equal to 0 and less than or equal to M, M is

Is divided by N and rounded. Optionally, the coverage enhancement indication is received according to one of the following informationMessage:

a physical layer sequence;

RRC message for carrying SSB configuration information.

An embodiment of the present invention further provides a receiving method of an SSB, which is applied to a network side device, as shown in fig. 3, and includes:

step 201: and sending a coverage enhancement indication message to a terminal so that the terminal determines a cell identifier set and a coverage grade corresponding to the cell identifier set according to the coverage enhancement indication message.

In this embodiment, the terminal receives the coverage enhancement indication message of the network side device, and determines the cell identifier set and the coverage level corresponding to the cell identifier set according to the coverage enhancement indication message, so that the terminal receives the SSB according to the coverage enhancement indication message, which can reduce access delay, reduce terminal power consumption, and reduce terminal complexity.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

the indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the cell identity set use joint coding or independent coding.

Optionally, the set of cell identities satisfies at least one of:

first part of identifiers of cell identifiers in the cell identifier set are the same, wherein the cell identifiers in the cell identifier set consist of the first part of identifiers and the second part of identifiers;

second part of identifiers of the cell identifiers in the cell identifier set are the same, wherein the cell identifiers in the cell identifier set are composed of the first part of identifiers and the second part of identifiers;

cell identity in the set of cell identities

Satisfy the requirements of

Wherein, N is an integer defined by a protocol or configured by network side equipment, and N is an integer which is more than or equal to 0 and less than N;

cell identity in the set of cell identities

Satisfy the requirement of

Is

Wherein, N is an integer defined by a protocol or configured by network side equipment, M is an integer which is more than or equal to 0 and less than or equal to M, and M is

Is divided by N and rounded.

a physical layer sequence;

RRC message for carrying SSB configuration information.

An embodiment of the present invention further provides a receiving apparatus for an SSB, which is applied to a terminal, and as shown in fig. 4, the receiving apparatus includes:

a receiving module 31, configured to receive a coverage enhancement indication message of a network side device;

a determining module 32, configured to determine a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message;

an obtaining module 33, configured to obtain an identifier of at least one first cell and a coverage level of the first cell, where the identifier of the first cell belongs to the cell identifier set;

a processing module 34, configured to determine a repeated sending manner of the synchronization signal block SSB corresponding to the first cell according to the coverage level, and receive the SSB according to the repeated sending manner.

Optionally, the obtaining module is specifically configured to:

an identity of the first cell is determined based on the detected PSS and SSS.

Optionally, the determining module is specifically configured to:

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the determining module is configured to perform at least one of:

Or second part identification

A first part of the cell identifiers in the cell identifier set

Are all the same or are identified by a second part

Are all the same, the cell identificationCell identification in a set

Determining n, n is equal to the coverage enhancement indication message

Wherein N is

Is divided by N and rounded. Optionally, the receiving module receives the coverage enhancement indication message according to one of the following information:

a physical layer sequence;

RRC message for carrying SSB configuration information.

An embodiment of the present invention further provides a receiving apparatus of an SSB, which is applied to a terminal, and as shown in fig. 5, includes a processor 41 and a transceiver 42,

the transceiver 42 is configured to receive a coverage enhancement indication message of a network-side device;

the processor 41 is configured to determine a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message; acquiring an identifier of at least one first cell and a coverage level of the first cell, wherein the identifier of the first cell belongs to the cell identifier set; and determining a repeated sending mode of the SSB corresponding to the first cell according to the coverage grade, and receiving the SSB according to the repeated sending mode.

In this embodiment, a terminal receives a coverage enhancement indication message of a network side device, determines a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message, and acquires an identifier of at least one first cell and a coverage level of the first cell, where the identifier of the first cell belongs to the cell identifier set, determines a repeated transmission mode of a synchronization signal block SSB corresponding to the first cell according to the coverage level, and receives the SSB according to the repeated transmission mode. Therefore, the terminal receives the SSB according to the coverage enhancement indication message, so that the access delay can be reduced, the power consumption of the terminal can be reduced, and the complexity of the terminal can be reduced.

Optionally, the processor is specifically configured to:

detecting a PSS and an SSS corresponding to cell identifications contained in the cell identification set;

an identity of the first cell is determined based on the detected PSS and SSS.

Optionally, the processor is specifically configured to:

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the processor is configured to perform at least one of:

Or second part identification

A first part of the cell identifiers in the cell identifier set

Are all the same or are identified by a second part

All the same, cell identifiers in the cell identifier set

Determining n, n being equal to the coverage enhancement indication message

Wherein N is

Is divided by N and rounded. Optionally, the transceiver receives the coverage enhancement indication message according to one of the following information:

a physical layer sequence;

RRC message for carrying SSB configuration information.

An embodiment of the present invention further provides a receiving apparatus for an SSB, which is applied to a network side device, as shown in fig. 6, and includes:

a sending module 51, configured to send a coverage enhancement indication message to a terminal, so that the terminal determines, according to the coverage enhancement indication message, a cell identifier set and a coverage level corresponding to the cell identifier set.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of times of repeated transmission;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

the indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

a carrier frequency.

BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the set of cell identities satisfies at least one of:

the first part of the cell identifiers in the cell identifier set are all the same, wherein the cell identifiers in the cell identifier set are composed of the first part of the identifiers and the second part of the identifiers, and the cell identifiers in the cell identifier set are all the same

Is identified for the second part of the image,

identifying a first portion;

second part of identifiers of the cell identifiers in the cell identifier set are the same, wherein the cell identifiers in the cell identifier set consist of the first part of identifiers and the second part of identifiers;

cell identity in the set of cell identities

Satisfy the requirement of

The method comprises the following steps that N is an integer which is defined in advance or configured by network side equipment, and N is an integer which is greater than or equal to 0 and smaller than N;

cell identity in the set of cell identities

Satisfy the requirements of

Is/are as follows

Wherein, N is an integer predefined or configured by network side equipment, M is an integer greater than or equal to 0 and less than or equal to M, and M is

Is divided by N and rounded.

a physical layer sequence;

RRC message for carrying SSB configuration information.

An embodiment of the present invention further provides a receiving apparatus of an SSB, which is applied to a network side device, as shown in fig. 7, and includes a processor 61 and a transceiver 62,

the transceiver 62 is configured to send a coverage enhancement indication message to a terminal, so that the terminal determines a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message.

Optionally, the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

Optionally, the set of cell identities satisfies at least one of:

Is identified for the second part of the image,

identifying a first portion;

cell identity in the set of cell identities

Satisfy the requirements of

cell identity in the set of cell identities

Satisfy the requirement of

Is/are as follows

Is divided by N and rounded.

a physical layer sequence;

RRC message for carrying SSB configuration information.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The embodiments in the present specification are all described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same and similar between the embodiments may be referred to each other.

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

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

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

These computer program instructions may also be loaded onto a computer or other programmable data processing user terminal equipment to cause a series of operational steps to be performed on the computer or other programmable user terminal equipment to produce a computer implemented process such that the instructions which execute on the computer or other programmable user terminal equipment provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or user terminal 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 user terminal. Without further limitation, an element defined by the phrases "comprising one of \ 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or user terminal device that comprises the element.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A receiving method of SSB, which is applied to a terminal, includes:

receiving a coverage enhancement indication message of network side equipment;

determining a repeated sending mode of a Synchronous Signal Block (SSB) corresponding to the first cell according to the coverage grade, and receiving the SSB according to the repeated sending mode;

the acquiring the coverage level of the first cell comprises:

2. The receiving method of the SSB of claim 1, wherein the coverage enhancement indication message includes cell identity set indication information and further includes coverage level indication information corresponding to a cell identity set indicated by the cell identity set indication information.

3. The receiving method of SSB of claim 1, wherein obtaining the identity of the first cell comprises:

4. The method of receiving SSB of claim 1, wherein obtaining the identity of the first cell comprises:

an identity of the first cell is determined based on the detected PSS and SSS.

5. The receiving method of SSB according to claim 1, wherein the repeated transmission mode comprises at least one of:

6. The receiving method of SSB according to claim 2, wherein the coverage level indication information includes at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

the indication information of the pattern is repeatedly transmitted.

7. The receiving method of SSB according to claim 1 or 2, wherein the coverage enhancement indication message further comprises at least one of:

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

8. The receiving method of SSB according to claim 1 or 2, wherein the coverage enhancement indication message is configured for at least one of:

BWP identification;

frequency point information;

synchronizing the grid information;

absolute radio channel number ARFCN;

the carrier frequency.

9. The receiving method of SSB according to claim 1 or 2, wherein the coverage enhancement indication message uses joint coding or independent coding for the coverage level and the cell identity set.

10. The receiving method of SSB according to claim 1, wherein the coverage enhancement indication message is received according to one of the following information:

a physical layer sequence;

RRC message for carrying SSB configuration information.

11. A sending method is applied to a network side device, and comprises the following steps:

sending a coverage enhancement indication message to a terminal so that the terminal determines a cell identifier set and a coverage grade corresponding to the cell identifier set according to the coverage enhancement indication message, and the terminal determines a repeated sending mode of a Synchronization Signal Block (SSB) corresponding to a first cell according to the coverage grade and receives the SSB according to the repeated sending mode;

and the coverage grade corresponding to the cell identification set to which the identification of the first cell belongs is the coverage grade of the first cell.

12. The transmission method of claim 11,

the coverage enhancement indication message includes cell identification set indication information and also includes coverage level indication information corresponding to the cell identification set indicated by the cell identification set indication information.

13. The method as claimed in claim 12, wherein the coverage level indication information comprises at least one of:

indication information of the number of repeated transmissions;

repeatedly sending indication information of the time domain resources;

repeatedly sending indication information of the frequency domain resources;

indication information of the maximum number of repeated transmissions;

indication information of the pattern is repeatedly transmitted.

14. The transmitting method according to claim 11 or 12, wherein the coverage enhancement indication message further comprises at least one of:

bandwidth part BWP identification;

frequency point information;

synchronizing raster information;

absolute radio channel number ARFCN;

the carrier frequency.

15. The method of claim 11, wherein the coverage enhancement indication message is sent according to one of the following:

a physical layer sequence;

RRC message for carrying SSB configuration information.

16. An SSB receiving apparatus, applied to a terminal, includes:

the receiving module is used for receiving a coverage enhancement indication message of the network side equipment;

the determining module is further configured to use a coverage level corresponding to a cell identity set to which the identity of the first cell belongs as a coverage level of the first cell;

17. A receiving device of SSB is applied to a terminal and comprises a processor and a transceiver,

the processor is configured to determine a cell identifier set and a coverage level corresponding to the cell identifier set according to the coverage enhancement indication message; acquiring an identifier of at least one first cell and a coverage level of the first cell, wherein the identifier of the first cell belongs to the cell identifier set; and determining a repeated sending mode of the SSB corresponding to the first cell according to the coverage grade, receiving the SSB according to the repeated sending mode, and taking the coverage grade corresponding to the cell identifier set to which the identifier of the first cell belongs as the coverage grade of the first cell.

18. A sending device, applied to a network side device, includes:

a sending module, configured to send a coverage enhancement indication message to a terminal, so that the terminal determines, according to the coverage enhancement indication message, a cell identifier set and a coverage level corresponding to the cell identifier set, and the terminal determines, according to the coverage level, a repeated sending manner of a synchronization signal block SSB corresponding to a first cell and receives, according to the repeated sending manner, the SSB;

19. A transmitting device, applied to a network side device, includes a processor and a transceiver,

the transceiver is used for sending a coverage enhancement indication message to a terminal so that the terminal determines a cell identifier set and a coverage grade corresponding to the cell identifier set according to the coverage enhancement indication message, the terminal determines a repeated sending mode of a Synchronization Signal Block (SSB) corresponding to a first cell according to the coverage grade, and receives the SSB according to the repeated sending mode;

20. A receiving device of an SSB, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the method according to any of claims 1 to 15.

21. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of a method according to any one of claims 1 to 15.