CN112752280B - SSB receiving method and device - Google Patents

Abstract

The invention provides an SSB receiving method and device, belonging to the technical field of wireless communication. The method for receiving SSB, which is applied to a terminal, includes: receiving a coverage enhancement indication message from a network side device; determining a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message; acquiring at least one first cell An identifier and a coverage level of the first cell, wherein the identifier of the first cell belongs to the set of cell identifiers; according to the coverage level, the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell is determined, and according to the The SSB is received in the repeated sending manner. The technical solution of the invention can reduce the access delay and reduce the power consumption of the terminal.

Description

SSB receiving method and device

technical field

The present invention relates to the technical field of wireless communication, in particular to an SSB receiving method and device.

Background technique

In the New Radio (NR) design, the coverage is enhanced by introducing beam scanning, and the terminal selects a suitable beam for access according to its location. After the cell access is completed, the dedicated beam of the terminal can be further used for the transmission of the service channel, making full use of the advantages of large-scale antennas, and realizing the requirement of NR wide coverage.

The related art proposes an NR layered coverage design strategy, that is, supports coverage enhancement in NR partial beam directions or all beam directions. In order to reuse the existing synchronization signal (synchronization signal, SS)/physical broadcast channel (Physical Broadcast Channel, PBCH) design of NR as much as possible, in the scenario of layered coverage, different frequency domain positions of a carrier (such as Syncraster ), configure different synchronization signal block (synchronization signal block, SSB) transmission formats.

In order to allow the terminal to identify whether the current initial access process uses coverage enhancement, only when it is confirmed that the coverage enhancement method is used, can it perform synchronization and broadcast channel reception according to the enhanced method.

In this process, there are two methods according to the size of the synchronization delay:

Mode 1: First detect the synchronization channel, then detect the coverage enhancement indication message, identify whether the detection of coverage enhancement can be performed, and then detect the PBCH and subsequent channels.

Mode 2: first detect the coverage enhancement indication message, and then perform the detection of the synchronous broadcast channel.

In solution 1, the synchronization channel cannot enjoy the benefits of coverage enhancement. Therefore, as the number of dB to be enhanced increases, the terminal needs to combine synchronization signals of multiple SSB cycles to obtain accumulated synchronization signal energy, so the delay in obtaining synchronization is relatively large. At the same time, as the synchronization window becomes longer, more data needs to be cached. The advantage 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 a synchronization signal exists.

Scheme 2 detects the coverage enhancement indication message first, and the terminal first searches for the coverage enhancement indication message. In order to avoid the disadvantage of scheme 1, the coverage enhancement indication message should be concentrated as much as possible, and the detection reliability should be high.

The coverage enhancement indication message is at least used to indicate the coverage level, the SSB repetition times are determined according to the coverage level, and the terminal combines and receives the corresponding SSBs according to the SSB repetition times.

If the terminal does not receive the above-mentioned coverage enhancement indication message, then the terminal receives it according to the normal SSB reception method, but if there are multiple cells around the terminal, at least one of which sends a coverage enhancement indication message, then it will cause the terminal to follow the coverage enhancement instruction message. In this way, the SSBs of all cells are combined and received separately, which will cause the SSBs of cells without coverage enhancement to be combined incorrectly or unnecessarily, resulting in access failures, increased access delays, or terminal power consumption Increase.

If there are multiple coverage-enhanced cells with different coverage levels, the terminal may also receive the SSB of the high-coverage level cell in the combined reception method of the low coverage level, resulting in access failure; or the terminal needs to separate all possible coverage levels The SSBs of each cell are combined and received, resulting in an increase in access delay, or an increase in terminal power consumption, or an increase in terminal complexity.

Contents of the invention

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

In order to solve the above technical problems, embodiments of the present invention provide technical solutions as follows:

Embodiments of the present invention provide a method for receiving SSB, which is applied to a terminal, including:

receiving a coverage enhancement instruction message from a network side device;

determining a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message;

Acquiring at least one first cell identity and the coverage level of the first cell, where the first cell identity belongs to the cell identity set;

Determine a repeated transmission 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 transmission manner.

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

Optionally, 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;

Judging whether the second cell identity belongs to the cell identity set, and when the second cell identity belongs to the cell identity set, use the cell corresponding to the second cell identity as the first cell.

Optionally, obtaining the identifier of the first cell includes:

Detecting the PSS and SSS corresponding to the cell identities contained in the set of cell identities;

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

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

The coverage level corresponding to the set of cell identities to which the identity of the first cell belongs is taken as the coverage level of the first cell.

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

The number of repeated transmissions; the time domain resources for repeated transmissions; the frequency domain resources for repeated transmissions; the maximum number of repeated transmissions; the repeated transmission patterns.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving method, which is applied to a network side device, including:

Sending a coverage enhancement indication message to the terminal, so that the terminal determines a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message.

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

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving device, which is applied to a terminal, including:

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

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

An acquiring module, configured to acquire 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 set of cell identifiers;

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

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

Optionally, the acquisition module is specifically used for:

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

Judging whether the second cell identity belongs to the cell identity set, and when the second cell identity belongs to the cell identity set, use the cell corresponding to the second cell identity as the first cell.

Optionally, the acquisition module is specifically used for:

Detecting the PSS and SSS corresponding to the cell identities contained in the set of cell identities;

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

Optionally, the determining module is specifically configured to:

The coverage level corresponding to the set of cell identities to which the identity of the first cell belongs is taken as the coverage level of the first cell.

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

The number of repeated transmissions; the time domain resources for repeated transmissions; the frequency domain resources for repeated transmissions; the maximum number of repeated transmissions; the repeated transmission patterns.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving device, applied to a terminal, including a processor and a transceiver,

The transceiver is used to receive a coverage enhancement instruction message from a network side device;

The processor is configured to determine a set of cell identities and a coverage level corresponding to the set of cell identities according to the coverage enhancement indication message; acquire at least one first cell identity and the coverage level of the first cell, wherein the first The identity of the cell belongs to the set of cell identities; according to the coverage level, the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell is determined, and the SSB is received according to the repeated transmission mode.

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

Optionally, the processor is specifically configured to:

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

Judging whether the second cell identity belongs to the cell identity set, and when the second cell identity belongs to the cell identity set, use the cell corresponding to the second cell identity as the first cell.

Optionally, the processor is specifically configured to:

Detecting the PSS and SSS corresponding to the cell identities contained in the set of cell identities;

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

Optionally, the processor is specifically configured to:

The coverage level corresponding to the set of cell identities to which the identity of the first cell belongs is taken as the coverage level of the first cell.

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

The number of repeated transmissions; the time domain resources for repeated transmissions; the frequency domain resources for repeated transmissions; the maximum number of repeated transmissions; the repeated transmission patterns.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving device, which is applied to network side equipment, including:

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

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

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

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

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

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

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

An embodiment of the present invention also provides an SSB receiving device, including: a memory, a processor, and a computer program stored on the memory and operable on the processor, and the computer program is executed by the processor to achieve the above Steps in the above-mentioned SSB receiving method.

An embodiment of the present invention also 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 steps in the above-mentioned SSB receiving method are implemented.

Embodiments of the present invention have the following beneficial effects:

In the above solution, the terminal receives the coverage enhancement indication message from the network side equipment, determines the cell identity set and the coverage level corresponding to the cell identity set according to the coverage enhancement indication message, and acquires the identity of at least one first cell and the coverage level of the first cell, wherein The identifier of the first cell belongs to the set of cell identifiers, the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell is determined according to the coverage level, and the SSB is received according to the repeated transmission mode. In this way, the terminal receives the SSB according to the coverage enhancement indication message, which can reduce the access delay, reduce the power consumption of the terminal, and reduce the complexity of the terminal.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

FIG. 1 is a schematic diagram of configuring different SSB transmission formats at different frequency domain positions of a carrier;

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

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

FIG. 4 is a structural block diagram of an SSB receiving device applied to a terminal according to an embodiment of the present invention;

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

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

FIG. 7 is a schematic composition diagram of a network side 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 will describe in detail with reference to the drawings and specific embodiments.

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

The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed Those steps or elements may instead include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus. "And/or" in the specification and claims means at least one of the connected objects.

The techniques described herein are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-A) systems, and can also be used in various wireless communication systems, such as Code Division Multiple Access (Code Division Multiple Access) Access, CDMA), Time Division Multiple Access (Time Division Multiple Access, TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access Address (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system may implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and the like. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. A TDMA system can implement a radio technology such as Global System for Mobile Communication (GSM). The OFDMA system can implement radios such as UltraMobile Broadband (UMB), Evolution-UTRA (Evolution-UTRA, E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. technology. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and LTE-Advanced (like LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the systems and radio technologies mentioned above as well as other systems and radio technologies. However, the following description describes NR systems for example purposes, and NR terminology is used in much of the following description, although the techniques are applicable to applications other than NR system applications as well.

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 from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

In the process of NR deployment, although the network planning is designed with the goal of seamless coverage, due to the differences in the propagation environment in each direction in the actual deployment environment, for example, due to the presence of obstructions in a certain direction, the propagation loss is large, which cannot be achieved. Avoid the problem of short-board coverage in the corresponding propagation direction. Similar problems exist for coverage inside buildings. Due to the penetration loss of buildings, the received signal level of terminals inside buildings is low. However, due to the relatively empty propagation environment outside buildings, the distance that can be covered is farther than distance from the building. In this case, the most direct coverage expansion solution is to add cells or deploy relay devices. This method is simple and direct, but at the same time means higher equipment costs and maintenance costs.

The three major application scenarios of NR are enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), ultra-reliable, low-latency communication (uRLLC). The characteristics of delay and high reliability have been fully considered, but the consideration of low cost and large connection is relatively lacking. Although it also supports configurable terminal working bandwidth, which can enable terminals with small working bandwidth to access, but the overall implementation is based on the requirements of eMBB. The optimized design does not fully reflect the demand for larger and deeper coverage. At the same time, the terminals of the Internet of Things also have a large range of requirements for speed. Some Internet of Things terminals require large coverage and also have certain requirements for transmission rates. Therefore, considering different rate requirements comprehensively, from the perspective of system design, it should support more flexible use of bandwidth resources while supporting large coverage, rather than fixed narrowband resource system design. At the same time, the design of mMTC services should reuse the protocol design of NR as much as possible to enjoy the chip cost dividend brought by the large-scale deployment of NR.

Based on the requirements of the above two scenarios, a hierarchical coverage design strategy for NR is proposed, which supports coverage enhancement in some beam directions or all beam directions of NR. The basic principle is to reuse the NR protocol, support backward compatibility, introduce coverage enhancement design in some beam directions, and enhance coverage through protocol upgrade instead of equipment deployment. At the same time, the coverage enhancement design should take into account the low-cost requirements of the Internet of Things, support variable transmission rates, and support the coverage enhancement of the whole cell by extending the coverage enhancement in some directions, so as to realize the support of NR for the Internet of Things business.

In the initial synchronization stage, mMTC users need to receive synchronous and broadcast signals in combination because they need to obtain a large coverage gain. The current NR synchronization signal design can only support the combination of broadcast signals within 80ms at most. According to the assumption that the synchronization and broadcast signals are searched at a period of 20ms when the terminal initially accesses, it can only obtain a combined gain of 6dB at most, which is difficult to satisfy all broadcast signals. Cover the user's coverage enhancement needs.

In order to reuse the existing synchronization signal (synchronization signal, SS)/physical broadcast channel (Physical Broadcast Channel, PBCH) design of NR as much as possible, in the scenario of layered coverage, different frequency domain positions of a carrier (such as Syncraster ), configure different synchronization signal block (synchronization signal block, SSB) transmission formats, as shown in Fig. It may be different; the SSB used for coverage enhancement is configured on the frequency domain position 2. At this time, the beams corresponding to different SSB indexes may be repeated transmission beams in a certain direction, and the beams located under the coverage of the beam The terminal can search for the SSB at position 2 in the frequency domain and perform combined reception to enjoy the gain of coverage enhancement.

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

For the format of SSB repetition, the combined reception of SSB can be divided into the following categories:

(1) Combine and receive the SSB sent every 80ms.

(2) Combine and receive the SSB sent every 20ms within 80ms;

NR supports that SSBs under the same index between different 20ms within 80ms can be merged, and some instructions can be added so that they can be merged directly without terminal blind detection.

(3) Merge and receive the SSB sent every N ms within 20ms;

The terminal may be notified of the SSB transmission period N ms through a new indication signal, such as 5 ms, 10 ms and 20 ms, corresponding to 4 times, 2 times and 1 combination of 20 ms respectively.

(4) Combine and receive the SSBs corresponding to different SSB indexes within 5ms.

In order to allow the terminal to identify whether the current initial access process uses coverage enhancement, only when it is confirmed that the coverage enhancement method is used, can it perform synchronization and broadcast channel reception according to the enhanced method.

In this process, there are two methods according to the size of the synchronization delay:

Mode 1: First detect the synchronization channel, then detect the coverage enhancement indication message, identify whether the detection of coverage enhancement can be performed, and then detect the PBCH and subsequent channels.

Mode 2: first detect the coverage enhancement indication message, and then perform the detection of the synchronous broadcast channel.

In solution 1, the synchronization channel cannot enjoy the benefits of coverage enhancement. Therefore, as the number of dB to be enhanced increases, the terminal needs to combine synchronization signals of multiple SSB cycles to obtain accumulated synchronization signal energy, so the delay in obtaining synchronization is relatively large. At the same time, as the synchronization window becomes longer, more data needs to be cached. The advantage 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 a synchronization signal exists.

Scheme 2 detects the coverage enhancement indication message first, and the terminal first searches for the coverage enhancement indication message. In order to avoid the disadvantage of scheme 1, the coverage enhancement indication message should be concentrated as much as possible, and the detection reliability should be high.

The coverage enhancement indication message is at least used to indicate the coverage level, the SSB repetition times are determined according to the coverage level, and the terminal combines and receives the corresponding SSBs according to the SSB repetition times.

If the terminal does not receive the above-mentioned coverage enhancement indication message, then the terminal receives it according to the normal SSB reception method, but if there are multiple cells around the terminal, at least one of which sends a coverage enhancement indication message, then it will cause the terminal to follow the coverage enhancement instruction message. In this way, the SSBs of all cells are combined and received separately, which will cause the SSBs of cells without coverage enhancement to be combined incorrectly or unnecessarily, resulting in access failures, increased access delays, or terminal power consumption Increase.

If there are multiple coverage-enhanced cells with different coverage levels, the terminal may also receive the SSB of the high-coverage level cell in the combined reception method of the low coverage level, resulting in access failure; or the terminal needs to separate all possible coverage levels The SSBs of each cell are combined and received, resulting in an increase in access delay, or an increase in terminal power consumption, or an increase in terminal complexity.

In order to solve the above problems, embodiments of the present invention provide an SSB receiving method and device, which can reduce access delay and reduce terminal power consumption.

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

Step 101: Receive a coverage enhancement indication message from a network side device;

Step 102: Determine a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message;

Step 103: Obtain at least one first cell identity and the coverage level of the first cell, wherein the first cell identity belongs to the cell identity set;

Step 104: Determine the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell according to the coverage level, and receive the SSB according to the repeated transmission mode.

In this embodiment, the terminal receives the coverage enhancement instruction message from the network side device, determines the set of cell identifiers and the coverage level corresponding to the set of cell identifiers according to the coverage enhancement instruction message, and acquires the identifier of at least one first cell and the coverage level of the first cell, The identifier of the first cell belongs to the set of cell identifiers, the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell is determined according to the coverage level, and the SSB is received according to the repeated transmission mode. In this way, the terminal receives the SSB according to the coverage enhancement indication message, which can reduce the access delay, reduce the power consumption of the terminal, and reduce the complexity of the terminal.

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

Optionally, 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;

Judging whether the second cell identity belongs to the cell identity set, and when the second cell identity belongs to the cell identity set, use the cell corresponding to the second cell identity as the first cell.

Optionally, obtaining the identifier of the first cell includes:

Detecting the PSS and SSS corresponding to the cell identities contained in the set of cell identities;

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

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

The coverage level corresponding to the set of cell identities to which the identity of the first cell belongs is taken as the coverage level of the first cell.

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

The number of repeated transmissions; the time domain resources for repeated transmissions; the frequency domain resources for repeated transmissions; the maximum number of repeated transmissions; the repeated transmission patterns.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

The coverage level indication information may include indication information of repeated transmission times, repeated transmission time domain/frequency domain resources, maximum repeated transmission times, and repeated transmission patterns. In order to support different cell configurations with different coverage enhancement levels, and different BWP configurations in the same cell, different coverage levels are configured instead of a certain coverage level (designing according to the maximum coverage level means more network resources). The coverage enhancement level needs to be carried in the coverage level indication information. For the case of carrying SSBs with different repetition times in the BWP, the carried information may correspond to different repetition times. For example, repeat 2 times, 4 times, 8 times, 16 times... .

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Frequency Channel Number (ARFCN);

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

Among them, the cell ID set indication information can be any of the following:

或

其中

or

in

的

其中0≤n<N，n与N为整数n, the set of cell IDs contains

of

Where 0≤n<N, n and N are integers

N为预先定义或网络侧设备配置的整数，m为大于等于0小于等于M的整数，M为

的最大值除以N后取整。m, the set of cell IDs contains

N is an integer predefined or configured on the network side device, m is an integer greater than or equal to 0 and less than or equal to M, and M is

The maximum value of is divided by N and rounded up.

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

为0，分别对应2,4,8,16种重复次数；For example: 0, 1, 2, 3 correspond to the PSS of the cell

is 0, corresponding to 2, 4, 8, and 16 repetitions respectively;

为1，分别对应2,4,8,16种重复次数；4,5,6,7 correspond to cell PSS

is 1, corresponding to 2, 4, 8, and 16 repetitions respectively;

为2，分别对应2,4,8,16种重复次数。8,9,10,11 correspond to the cell PSS

It is 2, corresponding to 2, 4, 8, and 16 repetitions respectively.

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

或第二部分标识

所述小区标识集合中的小区标识的第一部分标识

均相同或第二部分标识

均相同，所述小区标识集合中的小区标识

Determine the first part identifier according to the coverage enhancement indication message

or the second part of the identifier

The first part of the cell identity in the set of cell identity

Both are the same or the second part of the identification

are all the same, the cell IDs in the set of cell IDs

其中，N为预先定义或网络侧设备配置的整数，n为大于等于0小于N的整数；Determine n according to the coverage enhancement indication message, where n is equal to

Wherein, N is an integer predefined or configured by a network-side device, and n is an integer greater than or equal to 0 and less than N;

其中，N为Determine m according to the coverage enhancement indication message, m is equal to

Among them, N is

的最大值除以N后取整。可选地，根据以下信息中的一种接收所述覆盖增强指示消息：An integer that is predefined or configured on the network side device, m is an integer greater than or equal to 0 and less than or equal to M, and M is

The maximum value of is divided by N and rounded up. Optionally, the coverage enhancement indication message is received according to one of the following information:

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving method, which is applied to a network side device, as shown in FIG. 3 , including:

Step 201: Send a coverage enhancement indication message to the terminal, so that the terminal determines a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message.

In this embodiment, the terminal receives the coverage enhancement indication message from the network side equipment, and determines the cell identity set and the coverage level corresponding to the cell identity 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 enhancement indication message includes cell identity set indication information, and further includes coverage level indication information corresponding to the cell identity set indicated by the cell identity set indication information.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

Optionally, the cell identity set satisfies at least one of the following:

The first partial identifiers of the cell identifiers in the set of cell identifiers are all the same, wherein the cell identifiers in the set of cell identifiers are composed of a first partial identifier and a second partial identifier;

The second part of the cell identities in the set of cell identities are all the same, wherein the cell identities in the set of cell identities are composed of a first part of identities and a second part of identities;

满足

其中，N为协议定义或网络侧设备配置的整数，n为大于等于0小于N的整数；Cell IDs in the set of cell IDs

satisfy

Wherein, N is an integer defined by the protocol or configured by a network-side device, and n is an integer greater than or equal to 0 and less than N;

满足

的

其中，N为协议定义或网络侧设备配置的整数，m为大于等于0小于等于M的整数，M为

的最大值除以N后取整。Cell IDs in the set of cell IDs

satisfy

of

Among them, N is an integer defined by the protocol or configured by the network-side device, m is an integer greater than or equal to 0 and less than or equal to M, and M is

The maximum value of is divided by N and rounded up.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving device, which is applied to a terminal, as shown in FIG. 4, including:

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 identity set and a coverage level corresponding to the cell identity 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, wherein the identifier of the first cell belongs to the set of cell identifiers;

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

In this embodiment, the terminal receives the coverage enhancement instruction message from the network side device, determines the set of cell identifiers and the coverage level corresponding to the set of cell identifiers according to the coverage enhancement instruction message, and acquires the identifier of at least one first cell and the coverage level of the first cell, The identifier of the first cell belongs to the set of cell identifiers, the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell is determined according to the coverage level, and the SSB is received according to the repeated transmission mode. In this way, the terminal receives the SSB according to the coverage enhancement indication message, which can reduce the access delay, reduce the power consumption of the terminal, and reduce the complexity of the terminal.

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

Optionally, the acquisition module is specifically used for:

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

Judging whether the second cell identity belongs to the cell identity set, and when the second cell identity belongs to the cell identity set, use the cell corresponding to the second cell identity as the first cell.

Optionally, the acquisition module is specifically used for:

Detecting the PSS and SSS corresponding to the cell identities contained in the set of cell identities;

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

Optionally, the determining module is specifically configured to:

The coverage level corresponding to the set of cell identities to which the identity of the first cell belongs is taken as the coverage level of the first cell.

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

The number of repeated transmissions; the time domain resources for repeated transmissions; the frequency domain resources for repeated transmissions; the maximum number of repeated transmissions; the repeated transmission patterns.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

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

或第二部分标识

所述小区标识集合中的小区标识的第一部分标识

均相同或第二部分标识

均相同，所述小区标识集合中的小区标识

Determine the first part identifier according to the coverage enhancement indication message

or the second part of the identifier

The first part of the cell identity in the set of cell identity

Both are the same or the second part of the identification

are all the same, the cell IDs in the set of cell IDs

其中，N为预先定义或网络侧设备配置的整数，n为大于等于0小于N的整数；Determine n according to the coverage enhancement indication message, where n is equal to

Wherein, N is an integer predefined or configured by a network-side device, and n is an integer greater than or equal to 0 and less than N;

其中，N为Determine m according to the coverage enhancement indication message, m is equal to

Among them, N is

的最大值除以N后取整。可选地，所述接收模块根据以下信息中的一种接收所述覆盖增强指示消息：An integer that is predefined or configured on the network side device, m is an integer greater than or equal to 0 and less than or equal to M, and M is

The maximum value of is divided by N and rounded up. Optionally, the receiving module receives the coverage enhancement indication message according to one of the following information:

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving device, which is applied to a terminal, as shown in FIG. 5 , including a processor 41 and a transceiver 42,

The transceiver 42 is used to receive a coverage enhancement instruction message from a network side device;

The processor 41 is configured to determine a set of cell identities and a coverage level corresponding to the set of cell identities according to the coverage enhancement indication message; obtain at least one first cell identity and the coverage level of the first cell, wherein the The identifier of the first cell belongs to the set of cell identifiers; determining a repeated transmission mode of a synchronization signal block SSB corresponding to the first cell according to the coverage level, and receiving the SSB according to the repeated transmission mode.

In this embodiment, the terminal receives the coverage enhancement instruction message from the network side device, determines the set of cell identifiers and the coverage level corresponding to the set of cell identifiers according to the coverage enhancement instruction message, and acquires the identifier of at least one first cell and the coverage level of the first cell, The identifier of the first cell belongs to the set of cell identifiers, the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell is determined according to the coverage level, and the SSB is received according to the repeated transmission mode. In this way, the terminal receives the SSB according to the coverage enhancement indication message, which can reduce the access delay, reduce the power consumption of the terminal, and reduce the complexity of the terminal.

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

Optionally, the processor is specifically configured to:

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

Judging whether the second cell identity belongs to the cell identity set, and when the second cell identity belongs to the cell identity set, use the cell corresponding to the second cell identity as the first cell.

Optionally, the processor is specifically configured to:

Detecting the PSS and SSS corresponding to the cell identities contained in the set of cell identities;

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

Optionally, the processor is specifically configured to:

The coverage level corresponding to the set of cell identities to which the identity of the first cell belongs is taken as the coverage level of the first cell.

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

The number of repeated transmissions; the time domain resources for repeated transmissions; the frequency domain resources for repeated transmissions; the maximum number of repeated transmissions; the repeated transmission patterns.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

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

或第二部分标识

所述小区标识集合中的小区标识的第一部分标识

均相同或第二部分标识

均相同，所述小区标识集合中的小区标识

Determine the first part identifier according to the coverage enhancement indication message

or the second part of the identifier

The first part of the cell identity in the set of cell identity

Both are the same or the second part of the identification

are all the same, the cell IDs in the set of cell IDs

其中，N为预先定义或网络侧设备配置的整数，n为大于等于0小于N的整数；Determine n according to the coverage enhancement indication message, where n is equal to

Wherein, N is an integer predefined or configured by a network-side device, and n is an integer greater than or equal to 0 and less than N;

其中，N为Determine m according to the coverage enhancement indication message, m is equal to

Among them, N is

的最大值除以N后取整。可选地，所述收发器根据以下信息中的一种接收所述覆盖增强指示消息：An integer that is predefined or configured on the network side device, m is an integer greater than or equal to 0 and less than or equal to M, and M is

The maximum value of is divided by N and rounded up. Optionally, the transceiver receives the coverage enhancement indication message according to one of the following information:

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving device, which is applied to network side equipment, as shown in FIG. 6, including:

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

In this embodiment, the terminal receives the coverage enhancement indication message from the network side equipment, and determines the cell identity set and the coverage level corresponding to the cell identity 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 enhancement indication message includes cell identity set indication information, and further includes coverage level indication information corresponding to the cell identity set indicated by the cell identity set indication information.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

Optionally, the cell identity set satisfies at least one of the following:

为第二部分标识，

为第一部分标识；The first part of the cell identities in the set of cell identities are all the same, wherein the cell identities in the set of cell identities are composed of a first part of identities and a second part of identities, wherein the cell identities in the set of cell identities are

Identifies the second part,

Identifies the first part;

The second part of the cell identities in the set of cell identities are all the same, wherein the cell identities in the set of cell identities are composed of a first part of identities and a second part of identities;

满足

其中，N为预先定义或网络侧设备配置的整数，n为大于等于0小于N的整数；Cell IDs in the set of cell IDs

satisfy

Wherein, N is an integer predefined or configured by a network-side device, and n is an integer greater than or equal to 0 and less than N;

满足

的

其中，N为预先定义或网络侧设备配置的整数，m为大于等于0小于等于M的整数，M为

的最大值除以N后取整。Cell IDs in the set of cell IDs

satisfy

of

Among them, N is an integer predefined or configured by the network side device, m is an integer greater than or equal to 0 and less than or equal to M, and M is

The maximum value of is divided by N and rounded up.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

The embodiment of the present invention also provides an SSB receiving apparatus, which is applied to network side equipment, as shown in FIG. 7 , including a processor 61 and a transceiver 62,

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

In this embodiment, the terminal receives the coverage enhancement indication message from the network side equipment, and determines the cell identity set and the coverage level corresponding to the cell identity 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 enhancement indication message includes cell identity set indication information, and further includes coverage level indication information corresponding to the cell identity set indicated by the cell identity set indication information.

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

Indication information of the number of times of repeated sending;

The indication information of the time domain resource sent repeatedly;

Indication information of the frequency domain resource that is repeatedly sent;

Indication information of the maximum number of repeated sending times;

Instructions for repeatedly sending the pattern.

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

Bandwidth part BWP identification;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

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

BWP logo;

Frequency point information;

Synchronize grid information;

Absolute Radio Channel Number ARFCN;

carrier frequency.

Optionally, in the coverage enhancement indication message, the coverage level and the set of cell identities are coded jointly or independently.

Optionally, the cell identity set satisfies at least one of the following:

为第二部分标识，

为第一部分标识；The first part of the cell identities in the set of cell identities are all the same, wherein the cell identities in the set of cell identities are composed of a first part of identities and a second part of identities, wherein the cell identities in the set of cell identities are

Identifies the second part,

Identifies the first part;

The second part of the cell identities in the set of cell identities are all the same, wherein the cell identities in the set of cell identities are composed of a first part of identities and a second part of identities;

满足

其中，N为预先定义或网络侧设备配置的整数，n为大于等于0小于N的整数；Cell IDs in the set of cell IDs

satisfy

Wherein, N is an integer predefined or configured by a network-side device, and n is an integer greater than or equal to 0 and less than N;

满足

的

其中，N为预先定义或网络侧设备配置的整数，m为大于等于0小于等于M的整数，M为

的最大值除以N后取整。Cell IDs in the set of cell IDs

satisfy

of

Among them, N is an integer predefined or configured by the network side device, m is an integer greater than or equal to 0 and less than or equal to M, and M is

The maximum value of is divided by N and rounded up.

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

physical layer sequence;

A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of

An RRC message used to carry SSB configuration information.

An embodiment of the present invention also provides an SSB receiving device, including: a memory, a processor, and a computer program stored on the memory and operable on the processor, and the computer program is executed by the processor to achieve the above Steps in the above-mentioned SSB receiving method.

An embodiment of the present invention also 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 steps in the above-mentioned SSB receiving method are implemented.

It should be understood that the embodiments described herein may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable logic Device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, other electronic units for performing the functions described in this application or a combination thereof.

For a software implementation, the techniques described herein can be implemented through modules (eg, procedures, functions, and so on) that perform the functions described herein. Software codes can be stored in memory and executed by a processor. Memory can be implemented within the processor or external to the processor.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, devices, or computer program products. Accordingly, embodiments of the 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 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, etc.) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowcharts and/or block diagrams of methods, user terminal devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general-purpose computer, a special purpose computer, an embedded processor, or a processor of other programmable data processing user terminal equipment to produce a machine so that the computer or other programmable data processing user terminal equipment may execute The instructions generate means for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing user terminal equipment to operate in a specific manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising instruction means, The instruction means implements the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing user terminal equipment, so that a series of operation steps are executed on the computer or other programmable user terminal equipment to produce computer-implemented processing, so that the computer or other programmable data processing The instructions executed on the user terminal equipment provide steps for realizing the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.

Having described preferred embodiments of embodiments of the present invention, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be construed to cover the preferred embodiment and all changes and modifications which fall within the scope of the embodiments of the present invention.

It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between. Moreover, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or user terminal equipment comprising a series of elements includes not only those elements, but also includes not expressly other elements listed, or also include elements inherent to such a process, method, article, or user terminal equipment. Without further limitations, an element defined by the statement "comprising a..." does not exclude the existence of another same element in the process, method, article, or user terminal device that includes the element.

What has been described above is a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principles described in the present invention. within the scope of protection of the invention.

Claims (21)

1. A method for receiving SSB, characterized in that it is applied to a terminal, including: receiving a coverage enhancement instruction message from a network side device; determining a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message; Acquiring at least one first cell identity and the coverage level of the first cell, where the first cell identity belongs to the cell identity set; determining a repeated transmission mode of the synchronization signal block SSB corresponding to the first cell according to the coverage level, and receiving the SSB according to the repeated transmission mode; Obtaining the coverage level of the first cell includes: The coverage level corresponding to the set of cell identities to which the identity of the first cell belongs is taken as the coverage level of the first cell. 2. The method for receiving SSB according to claim 1, wherein the coverage enhancement indication message includes cell identity set indication information, and also includes a coverage level indication corresponding to the cell identity set indicated by the cell identity set indication information information. 3. The receiving method of SSB according to claim 1, wherein obtaining the identity of the first cell comprises: determining a second cell identity based on the detected primary synchronization signal PSS and secondary synchronization signal SSS; Judging whether the second cell identity belongs to the cell identity set, and when the second cell identity belongs to the cell identity set, use the cell corresponding to the second cell identity as the first cell. 4. The receiving method of SSB according to claim 1, wherein obtaining the identity of the first cell comprises: Detecting the PSS and SSS corresponding to the cell identities contained in the set of cell identities; 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, characterized in that, the repeated sending method comprises at least one of the following: The number of repeated transmissions; the time domain resources for repeated transmissions; the frequency domain resources for repeated transmissions; the maximum number of repeated transmissions; the repeated transmission patterns. 6. The method for receiving SSB according to claim 2, wherein the coverage level indication information includes at least one of the following: Indication information of the number of times of repeated sending; The indication information of the time domain resource sent repeatedly; Indication information of the frequency domain resource that is repeatedly sent; Indication information of the maximum number of repeated sending times; Instructions for repeatedly sending the pattern. 7. The method for receiving SSB according to claim 1 or 2, wherein the coverage enhancement indication message further includes at least one of the following: Bandwidth part BWP identification; Frequency point information; Synchronize grid information; Absolute Radio Channel Number ARFCN; carrier frequency. 8. The method for receiving SSB according to claim 1 or 2, wherein the coverage enhancement indication message is configured for at least one of the following: BWP logo; Frequency point information; Synchronize grid information; Absolute Radio Channel Number ARFCN; carrier frequency. 9. The method for receiving SSB according to claim 1 or 2, characterized in that, in the coverage enhancement indication message, the coverage level and the set of cell identities adopt joint coding or independent coding. 10. The receiving method of SSB according to claim 1, characterized in that, receiving the coverage enhancement indication message according to one of the following information: physical layer sequence; A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of An RRC message used to carry SSB configuration information. 11. A sending method, characterized in that it is applied to a network side device, comprising: Sending a coverage enhancement indication message to the terminal, so that the terminal determines the cell identity set and the coverage level corresponding to the cell identity set according to the coverage enhancement indication message, and the terminal determines the synchronization signal block corresponding to the first cell according to the coverage level A repeated transmission mode of the SSB, receiving the SSB according to the repeated transmission mode; The coverage level corresponding to the cell identity set to which the identity of the first cell belongs is the coverage level of the first cell. 12. The sending method according to claim 11, characterized in that, The coverage enhancement indication message includes cell identity set indication information, and further includes coverage level indication information corresponding to the cell identity set indicated by the cell identity set indication information. 13. The sending method according to claim 12, wherein the coverage level indication information includes at least one of the following: Indication information of the number of times of repeated sending; The indication information of the time domain resource sent repeatedly; Indication information of the frequency domain resource that is repeatedly sent; Indication information of the maximum number of repeated sending times; Instructions for repeatedly sending the pattern. 14. The sending method according to claim 11 or 12, wherein the coverage enhancement indication message further includes at least one of the following: Bandwidth part BWP identification; Frequency point information; Synchronize grid information; Absolute Radio Channel Number ARFCN; carrier frequency. 15. The sending method according to claim 11, wherein the coverage enhancement instruction message is sent according to one of the following information: physical layer sequence; A system broadcast message for carrying cell reselection information, the system broadcast message for carrying cell reselection information includes system broadcast message block 2, system broadcast message block 3, system broadcast message block 4, and system broadcast message block 5 at least one of An RRC message used to carry SSB configuration information. 16. An SSB receiving device, characterized in that it is applied to a terminal, comprising: A receiving module, configured to receive a coverage enhancement indication message of a network side device; A determining module, configured to determine a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message; An acquiring module, configured to acquire 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 set of cell identifiers; The determining module is further configured to use the coverage level corresponding to the cell identity set to which the identity of the first cell belongs as the coverage level of the first cell; A processing module, configured to determine, according to the coverage level, a repeated transmission manner of the synchronization signal block SSB corresponding to the first cell, and receive the SSB according to the repeated transmission manner. 17. An SSB receiving device, characterized in that it is applied to a terminal, including a processor and a transceiver, The transceiver is used to receive a coverage enhancement instruction message from a network side device; The processor is configured to determine a set of cell identities and a coverage level corresponding to the set of cell identities according to the coverage enhancement indication message; acquire at least one first cell identity and the coverage level of the first cell, wherein the first The identity of the cell belongs to the cell identity set; determine the repeated transmission mode of the synchronization signal block SSB corresponding to the first cell according to the coverage level, and receive the SSB according to the repeated transmission mode. The coverage level corresponding to the cell identity set to which the identity of a cell belongs is used as the coverage level of the first cell. 18. A sending device, characterized in that it is applied to a network side device, comprising: A sending module, configured to send a coverage enhancement indication message to the terminal, so that the terminal determines a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message, and the terminal determines a first cell according to the coverage level The corresponding synchronization signal block SSB repeated sending mode, and the SSB is received according to the repeated sending mode; The coverage level corresponding to the cell identity set to which the identity of the first cell belongs is the coverage level of the first cell. 19. A sending device, characterized in that it is applied to network side equipment, including a processor and a transceiver, The transceiver is configured to send a coverage enhancement indication message to the terminal, so that the terminal determines a cell identity set and a coverage level corresponding to the cell identity set according to the coverage enhancement indication message, and the terminal determines the first cell according to the coverage level The corresponding synchronization signal block SSB repeated sending mode, and the SSB is received according to the repeated sending mode; The coverage level corresponding to the cell identity set to which the identity of the first cell belongs is the coverage level of the first cell. 20. A receiving device for SSB, characterized in that it comprises: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor, it realizes the claim A step in the method described in any one of 1 to 15. 21. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method according to any one of claims 1 to 15 is realized. steps in the method.

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