CN113965300B

CN113965300B - SSB demodulation and generation method, device and storage medium

Info

Publication number: CN113965300B
Application number: CN202010697051.XA
Authority: CN
Inventors: 杨新玲; 江世宇
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2023-02-17
Anticipated expiration: 2040-07-20
Also published as: CN113965300A

Abstract

The invention discloses a method, a device and a storage medium for SSB demodulation and generation, which are used for solving the technical problem that the SSB demodulation performance of a terminal is poorer when a network side uses a wide beam to send signals in the prior art, and the method comprises the following steps: receiving a synchronous signal block SSB message sent by a network side; the SSB message comprises PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence in a plurality of first SSBs in an SSB period, wherein the PBCH data corresponding to the second SSB using the same beam are scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index; determining all first SSBs with the same first SSB index from the SSB messages; all first SSBs with the same first SSB index are joint demodulated and measured.

Description

SSB demodulation and generation method, device and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a storage medium for SSB demodulation and generation.

Background

In the field of mobile communication, a base station device supporting multiple narrow beams has a high requirement on the number of antennas, often reaching more than 64 antennas, and has a very complex architecture and high cost.

Some private network devices and indoor substations do not support the number of antennas in such a large scale, that is, do not support the transmission of multiple narrow beams, but reduce beams and replace multiple narrow beams with one or more wide beams so as to cover the same angle with multiple narrow beams.

However, the wide beam lacks the gain of multi-beam forming, which directly results in the wide beam coverage distance being smaller than the narrow beam, and further makes the demodulation performance, frequency offset estimation and RSRP measurement performance of the Synchronization Signal Block (SSB) of the terminals at the same position relatively poor; one SSB is composed of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH).

Therefore, how to improve the SSB demodulation performance of the terminal when a network side transmits a signal using a wide beam is an urgent technical problem to be solved.

Disclosure of Invention

The invention provides a method, a device and a storage medium for SSB demodulation and generation, which are used for solving the technical problem that the SSB demodulation performance of a terminal is poor when a wide beam is used for sending signals on a network side in the prior art.

In a first aspect, to solve the above technical problem, an SSB demodulation method provided in an embodiment of the present invention is applied to a terminal, and a technical solution of the method is as follows:

receiving a synchronous signal block SSB message sent by a network side; wherein the SSB message comprises PBCH data corresponding to a second SSB using the same beam in a plurality of first SSBs in one SSB period and an initial value of a demodulation reference signal (DMRS) sequence, the PBCH data corresponding to the second SSB using the same beam is scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the same first SSB index;

determining all the second SSBs having the same first SSB index from the SSB message;

performing joint demodulation and measurement on the second SSBs having the same first SSB index.

In a possible embodiment, a system message SIB1 sent by the network side is received, where the SIB1 further includes indication information, and the indication information is used to indicate the second SSB using the same beam in the plurality of first SSBs.

In one possible embodiment, the indication information includes a total number of the plurality of the first SSBs and a repetition factor; wherein the repetition factor is used to indicate the number of the second SSBs using the same beam.

In a possible implementation manner, the indication information further includes a repetition flag, where the repetition flag is used to indicate a distribution rule of SSBs using the same beam in the SSB period.

In a possible embodiment, the distribution law includes a continuous distribution or an interval distribution.

In a possible implementation manner, the first SSB index is an SSB index of any one of the second SSBs using the same beam.

In a second aspect, an embodiment of the present invention provides a method for generating an SSB, where the method is applied to a network side, and the method includes:

scrambling PBCH data corresponding to a second SSB using the same beam in a plurality of first SSBs in one SSB period through the same first SSB index, and generating an initial value of a demodulation reference signal (DMRS) sequence to obtain an SSB message;

and sending the SSB message to a terminal, so that the terminal performs combined demodulation and measurement on all the second SSBs with the same first SSB index in the SSB message.

In a possible embodiment, a system message SIB1 sent by the network side further includes indication information, where the indication information is used to indicate the second SSB that uses the same beam in multiple first SSBs.

In a possible embodiment, the indication information further includes a repetition flag, where the repetition flag is used to indicate a distribution rule of the second SSB using the same beam in the SSB period.

In a possible embodiment, the distribution rule includes a continuous distribution or an interval distribution.

In a possible embodiment, the first SSB index is an SSB index of any one of the second SSBs using the same beam.

In a third aspect, an embodiment of the present invention provides an SSB demodulation apparatus, which is applied to a terminal, and includes:

the receiving unit is used for receiving a synchronous signal block SSB message sent by a network side; wherein the SSB message comprises PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence of a demodulation reference signal in a plurality of SSBs within one SSB period, the PBCH data corresponding to the second SSB using the same beam is scrambled by a same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index;

a determining unit, configured to determine all the second SSBs with the same first SSB index from the SSB messages;

a processing unit, configured to perform joint demodulation and measurement on all the second SSBs with the same first SSB index.

In one possible embodiment, the receiving unit is further configured to: receiving a system message SIB1 sent by the network side, wherein the SIB1 further includes indication information, and the indication information is used for indicating the second SSB using the same beam in the plurality of first SSBs.

In a possible implementation manner, the indication information further includes a repetition flag, where the repetition flag is used to indicate a distribution rule of the second SSB using the same beam in the SSB period.

In a fourth aspect, an embodiment of the present invention provides an SSB generation apparatus, which is applied to a network side, and includes:

the processing unit is used for scrambling PBCH data corresponding to a second SSB using the same beam in a plurality of first SSBs in one SSB period through the same first SSB index, generating an initial value of a demodulation reference signal (DMRS) sequence and obtaining an SSB message;

a sending unit, configured to send the SSB message to a terminal, so that the terminal performs combining, demodulating, and measuring on all the second SSBs with the same first SSB index in the SSB message.

In a possible implementation manner, the system message SIB1 sent by the network side further includes indication information, where the indication information is used to indicate the second SSB using the same beam in the plurality of first SSBs.

In a fifth aspect, an embodiment of the present invention further provides an SSB demodulation apparatus, which is applied to a terminal, and the apparatus includes: a processor, a memory, and a transceiver;

the processor is used for reading the program in the memory and executing the following processes:

receiving a synchronous signal block SSB message sent by a network side; wherein, the SSB message comprises PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence of a demodulation reference signal in a plurality of first SSBs within one SSB period, the PBCH data corresponding to the second SSB using the same beam is scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index;

determining all the second SSBs having the same first SSB index from the SSB messages;

performing joint demodulation and measurement on all the second SSBs having the same first SSB index.

In one possible implementation, the processor is further configured to: receiving a system message SIB1 sent by the network side, wherein the SIB1 further includes indication information, and the indication information is used for indicating the second SSB using the same beam in the plurality of first SSBs.

In a sixth aspect, an embodiment of the present invention further provides an SSB generation apparatus, which is applied to a network side, and the apparatus includes: a processor, a memory, and a transceiver;

scrambling PBCH data corresponding to a second SSB using the same beam in a plurality of first SSBs in an SSB period by using the same first SSB index, and generating an initial value of a demodulation reference signal (DMRS) sequence to obtain an SSB message;

In a seventh aspect, an embodiment of the present invention further provides a readable storage medium, including:

a memory for storing instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform the method of the first or second aspect as described above.

Through the technical solutions in one or more of the above embodiments of the present invention, the embodiments of the present invention have at least the following technical effects:

in the embodiment provided by the invention, the terminal determines the second SSBs with the same first SSB index from the SSB messages, and performs combined demodulation and measurement on all the second SSBs with the same first SSB index; the SSB message comprises physical broadcast channel PBCH data corresponding to a second SSB using the same beam and an initial value of a demodulation reference signal DMRS sequence in a plurality of first SSBs in an SSB period, wherein the PBCH data corresponding to the second SSB using the same beam are scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index. Compared with the mode of the same number of SSBs in the prior art, the demodulation performance of the SSBs and the performance of SINR, RSRP, frequency offset estimation and the like based on SSB measurement can be improved.

In the embodiment provided by the invention, a network side scrambles PBCH data corresponding to a second SSB of the same wave beam in a plurality of first SSBs in one SSB period through the same first SSB index, and generates an initial value of a demodulation reference signal (DMRS) sequence to obtain an SSB message; and sending the SSB message to the terminal, so that the terminal performs combined demodulation and measurement on all second SSBs with the same first SSB index in the SSB message. Since the plurality of SSBs use the same beam, the SSBs equivalently realize the superposition of beam transmission gains when transmitting, the signal-to-noise ratio is increased, and the coverage distance of the network side can be improved.

Drawings

FIG. 1 is a schematic diagram of a SSB time-frequency resource structure in FIG. 5G;

fig. 2 is a diagram of 8 SSBs transmitting using 8 beams in one SSB period;

fig. 3 is a flowchart of an SSB demodulation method at a terminal side according to an embodiment of the present invention;

fig. 4 is a first schematic beam direction diagram of 8 SSBs sent by a network side according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a beam direction of 8 SSBs sent by a network side according to an embodiment of the present invention;

fig. 6 is a third schematic diagram of beam directions of 8 SSBs sent by a network side according to an embodiment of the present invention;

fig. 7 is a flowchart of an SSB generation method on the network side according to an embodiment of the present invention;

fig. 8 is a first schematic structural diagram of an SSB demodulation apparatus at a terminal side according to an embodiment of the present invention;

fig. 9 is a first schematic structural diagram of an SSB generation apparatus on a network side according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a second SSB demodulation apparatus at a terminal side according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a SSB generation apparatus on a network side according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention provide a method, an apparatus, and a storage medium for SSB demodulation and generation, so as to solve the technical problem in the prior art that when a wide beam is used at a network side to transmit a signal, the SSB demodulation performance of a terminal is poor.

In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:

there is provided a method of SSB demodulation, comprising: a terminal receives a synchronous signal block SSB message sent by a network side; the SSB message comprises PBCH data corresponding to a second SSB using the same beam in a plurality of first SSBs in an SSB period and an initial value of a demodulation reference signal (DMRS) sequence, wherein the PBCH data corresponding to the second SSB using the same beam are scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index; determining all second SSBs having the same first SSB index from the SSB messages; the joint demodulation and measurement is performed for all SSBs with the same first SSB index.

In the above solution, the second SSBs with the same first SSB index are determined from the SSB messages, and all the second SSBs with the same first SSB index are combined, demodulated and measured; the SSB message comprises PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence of a demodulation reference signal in a plurality of first SSBs within one SSB period, the PBCH data corresponding to the second SSB using the same beam is scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index. Compared with the mode of the same number of SSBs in the prior art, the demodulation performance of the SSBs and the performance of SINR, RSRP, frequency offset estimation and the like based on SSB measurement can be improved.

In order to better understand the technical solutions of the present invention, the following detailed descriptions of the technical solutions of the present invention are provided with the accompanying drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the examples of the present invention are the detailed descriptions of the technical solutions of the present invention, and are not limitations of the technical solutions of the present invention, and the technical features in the embodiments and the examples of the present invention may be combined with each other without conflict.

In order to make those skilled in the art fully understand the technical solutions of the present application, prior to the introduction of the technical solutions of the present application, relevant knowledge is briefly introduced.

Please refer to fig. 1, which is a schematic diagram of a structure of SSB time-frequency resources in 5G. In fifth generation Mobile communication (5G), SSB includes PSS, SSS, PBCH.

The SSB time domain includes 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the Frequency domain includes 240 subcarriers, i.e., 20 Physical Resource Blocks (PRBs).

The PSS is mapped to the first OFDM symbol, occupying the middle 127 subcarriers in the frequency domain, with the other subcarriers free.

The SSS is mapped to the third OFDM symbol, occupying the middle 127 subcarriers (same PSS) in the frequency domain, leaving 8 and 9 subcarriers on both sides, respectively.

The PBCH is mapped to the second and fourth OFDM symbols and occupies 48 subcarriers on both sides of the SSS.

The SSBs are transmitted periodically, and each SSB period can transmit 4, 8 or 64 narrow beams, and the beam directions are different, please refer to fig. 2, which is a schematic diagram of 8 SSBs transmitting with 8 beams in one SSB period.

After a terminal detects a corresponding SSB beam in a certain direction, the terminal performs frequency offset estimation and Reference Signal Received Power (RSRP) measurement according to the SSB, continues to detect System Information Block (SIB) 1, acquires remaining System messages and initiates random access, and indicates a terminal SSB period and an actual transmission condition in SIB1, where, for example, an 8-beam SSB indicates which beam among 8 beams is actually transmitted in SIB1, and the terminal performs RSRP measurement and frequency offset estimation based on the SSB according to the actually transmitted SSB beam.

In the above processing procedure, when the number of beams is reduced, the coverage distance is directly shortened, and in the case where the number of beams is reduced from one beam to another at the same position, the demodulation performance of the SSB, and the measurement accuracy such as RSRP measurement and frequency offset estimation based on the SSB are reduced.

In order to solve the problems, the following scheme is adopted in the application:

referring to fig. 3, an embodiment of the present invention provides a method for SSB demodulation, which is applied to a terminal and includes the following processing steps.

Step 301: receiving a synchronous signal block SSB message sent by a network side; the SSB message comprises a plurality of first SSBs in an SSB period, PBCH data corresponding to a second SSB using the same beam and an initial value of a demodulation reference signal DMRS sequence, the PBCH data corresponding to the second SSB using the same beam is scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index.

The first SSB index is an SSB index of any of the second SSBs using the same beam.

For example, please refer to fig. 4, which is a first schematic diagram of beam directions of 8 SSBs sent by a network side according to an embodiment of the present invention. The 8 SSBs are denoted as SSB #0 to SSB #7 in fig. 4 (they are all referred to as the first SSB), their SSB indices are sequentially 0 to 7, and the beams used by two adjacent SSBs are the same (illustrated by ellipses in fig. 4), so that the 8 SSBs are transmitted from 4 directions using 4 beams. If SSB #0 and SSB #1 are adjacent to each other, and their beam direction is direction 1, and the same beam (e.g. denoted as beam 1) is used, then SSB #0 and SSB #1 can both be referred to as the second SSB of beam 1; SSB #2 is adjacent to SSB #3, and the beam direction thereof is direction 2, and the same beam (e.g., denoted as beam 2) is used, then SSB #0 and SSB #1 can both be referred to as the second SSB of beam 2, SSB #4 is adjacent to SSB #5, and the beam direction thereof is direction 3, and the same beam (e.g., denoted as beam 3) is used, then SSB #0 and SSB #1 can both be referred to as the second SSB of beam 3; SSB #6 and SSB #7 are adjacent to each other, and their beam direction is direction 4, and the same beam (denoted as beam 4) is used, so SSB #0 and SSB #1 can be referred to as the second SSB of beam 4.

It should be noted that the beam being the same means that all characteristics of the beam are the same, such as the direction and frequency of beam transmission, and a base station (GNB) shown in fig. 4 is the same GNB, and the GNB transmits SSB #0 to SSB #7 in different time domains (time), and similar descriptions in fig. 5 and fig. 6 are omitted.

When the network side transmits SSB #0 to SSB #7, SSB #0 and SSB #1 are transmitted using the same beam, and if the SSB index (i.e., 0) of SSB #0 is selected as their first SSB index, PBCH data corresponding to SSB #0 and SSB #1 are scrambled using the same first SSB index (0), and an initial value page of a corresponding Demodulation Reference Symbol (DMRS) sequence is generated using the same first SSB index (0). Similarly, since SSB #2 and SSB #3 are transmitted by the same beam, if the SSB index (i.e. 3) of SSB #3 is selected as the first SSB index, the PBCH data corresponding to SSB #2 and SSB #3 are scrambled by the same first SSB index (3), and the corresponding initial value page of the DMRS sequence is generated by the same first SSB index (3), which is not repeated herein.

For another example, please refer to fig. 5, which is a schematic diagram of beam directions of 8 SSBs sent by the network side according to an embodiment of the present invention. In fig. 5, the 8 SSBs are denoted as SSB #0 to SSB #7, their SSB indices are sequentially 0 to 7, and the beams used by two SSBs at intervals (for example, at an interval of 1) are the same (for example, the beams are considered to be the same in the beam direction, and are illustrated in an ellipse in fig. 5), so the 8 SSBs are transmitted from 4 directions by using 8 beams. If SSB #0 and SSB #2 are separated by 1 SSB, the beam direction is direction 1; SSB #1 alternates with SSB #3 by 1 SSB, the beam direction of which is direction 2, SSB #4 alternates with SSB #6 by 1 SSB, the beam direction of which is direction 3; SSB #5 and SSB #7 are separated by 1 SSB, and their beam direction is direction 4.

When the network side transmits SSBs #0 to SSBs #7, SSBs #0 and SSBs #2 use the same beam for transmission, and if the SSB index (i.e., 2) of SSB #2 is selected as the first SSB index, the PBCH data corresponding to SSBs #0 and SSBs #1 are scrambled using the same first SSB index (2), and the initial values of the corresponding DMRS sequences are generated using the same first SSB index (2). Similarly, since SSB #1 and SSB #3 are transmitted by the same beam, if the SSB index (i.e. 1) of SSB #1 is selected as the first SSB index, the PBCH data corresponding to SSB #1 and SSB #3 are scrambled by the same first SSB index (1), and the initial values of the corresponding DMRS sequences are generated by the same first SSB index (1), which is not repeated herein.

Fig. 6 is a third schematic view of beam directions of 8 SSBs sent by the network side according to an embodiment of the present invention. In fig. 6, the 8 SSBs are denoted as SSB #0 to SSB #7, their SSB indices are sequentially from 0 to 7, and they are all the same beam, so that PBCH data corresponding to each of the 8 SSBs is scrambled by the same first SSB index, and the initial value of the corresponding DMRS sequence is also generated by the same first SSB index (for example, SSB index of SSB #5, that is, 5).

After the network side sends the SSB message including a plurality of SSBs to the terminal, step 302 may be executed.

Step 302: all second SSBs having the same first SSB index are determined from the SSB messages.

The terminal may determine which first SSBs use the same first SSB index by comparing whether the first SSB index used by each first SSB is the same, and then determine that a second SSB using the same first SSB index uses the same beam.

The network side may include indication information in SIB1 for indicating a second SSB using the same beam among the plurality of first SSBs.

Therefore, before determining the second SSB having the same first SSB index from the SSB message, the terminal may further receive a system message SIB1 sent by the network side, where the SIB1 further includes indication information, and the indication information is used to indicate the second SSB using the same beam in the plurality of first SSBs. Therefore, the terminal can quickly determine the second SSB using the same beam from the plurality of first SSBs, so that the working efficiency of the terminal is improved, and the energy consumption of the terminal is saved.

In the embodiment provided by the present invention, the indication information includes a total number of the plurality of first SSBs and a repetition factor; wherein the repetition factor is used to indicate the number of second SSBs using the same beam.

For example, taking fig. 3 as an example, in fig. 3, the same beam is used for every 2 SSBs, so the repetition factor may be set to 2, and the network side sends 8 SSBs in the period, so the total number of SSBs is 8, and therefore, the indication information includes the repetition factor 2 and the total number of the first SSBs 8.

In the embodiment provided by the present invention, the indication information further includes a repetition flag, where the repetition flag is used to indicate a distribution rule of the second SSB using the same beam in an SSB period.

For example, taking fig. 3 as an example, 8 SSBs are two adjacent SSBs using the same beam, and the distribution rule may be identified by 1 (i.e. the repeated identification is 1); taking fig. 4 as an example, 8 SSBs are two SSBs that use the same beam, and the distribution rule may be identified by 2 (i.e. the repeated identification is 2); taking fig. 5 as an example, 8 SSBs all use the same beam, and the distribution rule may be identified by 3 (i.e. the repeated identification is 3).

It should be noted that the repeated identifier may be customized according to an actual distribution rule, and the above example is only an exemplary description.

In the embodiment provided by the invention, the distribution rule comprises a continuous distribution or an interval distribution.

After the second SSB having the same first SSB index is determined from the SSB message, step 303 may be performed.

Step 303: all second SSBs with the same first SSB index are joint demodulated and measured.

And after the terminal determines all the second SSBs with the same first SSB index, the terminal performs data combination on all the second SSBs with the same first SSB index, acquires combination gain, further performs data decoding, performs frequency offset estimation on DMRS (demodulation reference signal) of PBCH (physical broadcast channel) in the SSB data after correct decoding, and performs RSRP (reference signal received power) measurement on the SSB data.

For example, taking SSB #0 and SSB #1 in fig. 3 as an example, the terminal performs data combination on SSB #0 and SSB #1 to obtain a combination gain, combines the data of SSB #0 and SSB #1, decodes the data, decodes CRC on PBCH, and then performs RSRP measurement and frequency offset estimation. Therefore, the terminal can perform combined demodulation and measurement on the SSB using the same beam, so that the demodulation performance of the SSB is improved, and the frequency offset estimation precision and the RSRP precision based on the SSB measurement are improved.

Referring to fig. 7, an embodiment of the present invention provides a method for SSB generation, which is applied to a network side, and specific implementation of the method for SSB generation on the network side may refer to relevant descriptions in the embodiment of the method on the terminal side, and repeated details are not described again, and a processing procedure of the method is as follows.

Step 701: and scrambling PBCH data corresponding to a second SSB using the same beam in a plurality of first SSBs in one SSB period by using the same first SSB index, and generating an initial value of a demodulation reference signal (DMRS) sequence to obtain an SSB message.

In a possible implementation, the network side may be a radio access network, such as a base station, a micro base station, a DU, or the like.

Step 702: and sending the SSB message to the terminal, so that the terminal performs combined demodulation and measurement on all second SSBs with the same first SSB index in the SSB message.

A network side scrambles PBCH data corresponding to a second SSB using the same beam in a plurality of first SSBs in an SSB period through the same first SSB index, generates a demodulation reference signal DMRS and scrambles the DMRS to obtain an SSB message; and sending the SSB message to the terminal, so that the terminal performs combined demodulation and measurement on all second SSBs with the same first SSB index in the SSB message. Since the plurality of SSBs use the same beam, the SSBs equivalently realize the superposition of beam transmission gains when transmitting, the signal-to-noise ratio is increased, and the coverage distance of the network side can be improved.

In one possible embodiment, the indication information includes a repetition factor and a total number of the plurality of the first SSBs; wherein the repetition factor is used to indicate the number of the second SSBs using the same beam.

Based on the same inventive concept, an SSB demodulation apparatus provided in the embodiments of the present invention is applied to a terminal, and for a specific implementation of an SSB demodulation method of the apparatus, reference may be made to the description of the method embodiment part at the terminal side, repeated details are not described, and please refer to fig. 8, where the apparatus includes:

a receiving unit 801, configured to receive a synchronization signal block SSB message sent by a network side; wherein, the SSB message comprises PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence of a demodulation reference signal in a plurality of first SSBs within one SSB period, the PBCH data corresponding to the second SSB using the same beam is scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index;

a determining unit 802, configured to determine all the second SSBs with the same first SSB index from the SSB messages;

a processing unit 803, configured to perform joint demodulation and measurement on all the second SSBs with the same index of the first SSB.

In a possible implementation, the receiving unit 801 is further configured to: receiving a system message SIB1 sent by the network side, wherein the SIB1 further includes indication information, and the indication information is used for indicating the second SSB using the same beam in the plurality of first SSBs.

Based on the same inventive concept, an SSB generation apparatus provided in an embodiment of the present invention is applied to a network side, and a specific implementation of an SSB demodulation method of the apparatus may refer to the description of the network side method embodiment, and repeated details are not repeated, please refer to fig. 9, where the apparatus includes:

a processing unit 901, configured to scramble, by using the same first SSB index, PBCH data corresponding to a second SSB using the same beam in multiple first SSBs in one SSB period, and generate an initial value of a DMRS sequence for a demodulation reference signal, so as to obtain an SSB message;

a sending unit 902, configured to send the SSB message to a terminal, so that the terminal performs combination demodulation and measurement on all the second SSBs in the SSB message that have the same first SSB index.

As shown in fig. 10, an SSB demodulation apparatus provided in an embodiment of the present invention is applied to a terminal, and the apparatus includes: a processor 1001, a memory 1002, and a transceiver 1003;

the processor 1001 is configured to read a program in the memory 1002 and execute the following processes:

receiving a synchronous signal block SSB message sent by a network side; wherein the SSB message comprises a plurality of first SSBs in an SSB period, PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence of a demodulation reference signal, the PBCH data corresponding to the second SSB using the same beam is scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index;

In one possible implementation, the processor 1001 is further configured to: receiving a system message SIB1 sent by the network side, wherein the SIB1 further includes indication information, and the indication information is used for indicating the second SSB using the same beam in the plurality of first SSBs.

The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 may store data used by the processor 1001 in performing operations. The transceiver 1003 is used for receiving and transmitting data under the control of the processor 1001.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1001, and various circuits, represented by the memory 1002, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1002 may store data used by the processor 1001 in performing operations.

The process disclosed in the embodiment of the present invention may be applied to the processor 1001, or implemented by the processor 1001. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in software form in the processor 1001. The processor 1001 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, and may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor 1001. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1002, and the processor 1001 reads the information in the memory 1002 and completes the steps of the signal processing flow in combination with the hardware thereof.

As shown in fig. 11, an SSB generation apparatus provided in an embodiment of the present invention is applied to a network side, and the apparatus includes: a processor 1101, a memory 1102, and a transceiver 1103;

the processor 1101 is configured to read the program in the memory 1102 and execute the following processes:

scrambling PBCH data corresponding to a second SSB using the same wave beam in a plurality of first SSBs in one SSB period through the same first SSB index, and generating an initial value of a demodulation reference signal (DMRS) sequence to obtain an SSB message;

In one possible embodiment, the indication information includes:

a total number and repetition factor of a plurality of the first SSBs; wherein the repetition factor is used to indicate the number of the second SSBs using the same beam.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1102 may store data used by the processor 1101 in performing operations. The transceiver 1103 is used for receiving and transmitting data under the control of the processor 1101.

The bus architecture can include any number of interconnected buses and bridges, with various circuits representing one or more processors, in particular processor 1101, and memory represented by memory 1102 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1102 may store data used by the processor 1101 in performing operations.

The process disclosed by the embodiment of the invention can be applied to the processor 1101, or can be implemented by the processor 1101. In implementation, the steps of the signal processing flow may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The processor 1101 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor 1101. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the signal processing flow in conjunction with the hardware thereof.

Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium, including:

a memory for storing instructions that, when executed by the processor, cause an apparatus including the readable storage medium to perform the method for SSB demodulation on a terminal side or a network side as described above.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, 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 so forth) 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, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

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

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

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for SSB demodulation, applied to a terminal, includes:

receiving a synchronous signal block SSB message sent by a network side; wherein, the SSB message includes PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence of a demodulation reference signal in a plurality of first SSBs within one SSB period, the PBCH data corresponding to the second SSB using the same beam is scrambled by a same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index;

2. The method of claim 1, wherein a system message SIB1 sent by the network side is received, and the SIB1 further includes indication information indicating the second SSB using the same beam in the plurality of first SSBs.

3. The method of claim 2, wherein said indication information comprises a total number of a plurality of said first SSBs and a repetition factor; wherein the repetition factor is used to indicate the number of the second SSBs using the same beam.

4. The method of claim 3, wherein the indication information further comprises a repetition flag indicating a distribution rule of the second SSB using the same beam in the SSB period.

5. The method of claim 4, wherein the distribution rules comprise a continuous distribution or an intermittent distribution.

6. The method of any of claims 1-5, wherein the first SSB index is an SSB index of any of the second SSBs that use the same beam.

7. A method for generating SSB is applied to a network side, and is characterized by comprising the following steps:

8. The method of claim 7, wherein a system message SIB1 sent by the network side further includes indication information indicating the second SSB using the same beam among the plurality of first SSBs.

9. The method of claim 8, wherein the indication information comprises a total number of the plurality of the first SSBs and a repetition factor; wherein the repetition factor is used to indicate the number of the second SSBs using the same beam.

10. The method of claim 9, wherein the indication information further comprises a repetition flag indicating a distribution rule of the second SSB using the same beam in the SSB period.

11. The method of claim 10, wherein the distribution pattern comprises a continuous distribution or an intermittent distribution.

12. The method of any of claims 7-11, wherein the first SSB index is an SSB index of any of the second SSBs using the same beam.

13. An SSB demodulation apparatus applied to a terminal, comprising:

the receiving unit is used for receiving a synchronous signal block SSB message sent by a network side; wherein, the SSB message comprises PBCH data corresponding to a second SSB using the same beam and an initial value of a DMRS sequence of a demodulation reference signal in a plurality of first SSBs within one SSB period, the PBCH data corresponding to the second SSB using the same beam is scrambled by the same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index;

and the processing unit is used for performing combined demodulation and measurement on all the second SSBs with the same first SSB index.

14. An SSB generation apparatus applied to a network side, comprising:

a sending unit, configured to send the SSB message to a terminal, so that the terminal performs combining, demodulation, and measurement on all the second SSBs with the same first SSB index in the SSB message.

15. An SSB demodulation apparatus applied to a terminal, the apparatus comprising: a processor, a memory, and a transceiver;

receiving a synchronous signal block SSB message sent by a network side; wherein, the SSB message includes PBCH data and an initial value of a DMRS sequence for a physical broadcast channel corresponding to a second SSB using the same beam in a plurality of first SSBs within one SSB period, the PBCH data corresponding to the second SSB using the same beam is scrambled by a same first SSB index, and the initial value of the DMRS sequence corresponding to the second SSB using the same beam is generated by the first SSB index;

16. An SSB generation apparatus applied to a network side, the apparatus comprising: a processor, a memory, and a transceiver;

17. A readable storage medium, comprising a memory,

the memory is for storing instructions that, when executed by the processor, cause an apparatus comprising the readable storage medium to perform the method of any of claims 1-12.