CN109309551B - Indication and detection method of synchronization signal block time index, network equipment and terminal - Google Patents

Indication and detection method of synchronization signal block time index, network equipment and terminal Download PDF

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CN109309551B
CN109309551B CN201710620042.9A CN201710620042A CN109309551B CN 109309551 B CN109309551 B CN 109309551B CN 201710620042 A CN201710620042 A CN 201710620042A CN 109309551 B CN109309551 B CN 109309551B
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transmission resources
pbch
synchronization signal
signal block
dmrs sequence
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CN109309551A (en
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吴凯
丁昱
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Vivo Mobile Communication Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027Scheduling of signalling, e.g. occurrence thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention discloses an indicating and detecting method of a synchronous signal block time index, a network device and a terminal, wherein the method comprises the following steps: generating a plurality of demodulation reference signal (DMRS) sequences, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel (NR-PBCH) in a synchronization signal block; and transmitting a plurality of DMRS sequences to the terminal, and indicating the synchronization signal block time index corresponding to the NR-PBCH through at least one DMRS sequence. According to the invention, the time index of the synchronization signal block is indicated through the DMRS sequence, so that the terminal can rapidly acquire the time index of the synchronization signal block, and the utilization efficiency of the DMRS sequence is improved.

Description

Indication and detection method of synchronization signal block time index, network equipment and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method for indicating and detecting a synchronization signal block time index, a network device, and a terminal.
Background
Before the terminal communicates with the core network, it needs to search for a cell, find the cell where the terminal is located, synchronize with the cell, and receive and decode the necessary information for communication and normal operation with the cell. Specifically, the terminal obtains downlink synchronization and Physical layer Cell identity information (Cell identity, hereinafter referred to as Cell ID) of a Cell by detecting a Primary Synchronized Signal (PSS) and a Secondary Synchronized Signal (SSS) at a specific location, and then obtains necessary Cell system information by receiving a Physical Broadcast Channel (PBCH) Signal.
In the design of a New Radio (NR) system, a Synchronization Signal Block (SS Block) is provided, and timing information is acquired by using NR-PSS and NR-SSS to assist Cell search, wherein the timing is acquired by the NR-PSS in the SS Block, and the Cell ID is acquired by the NR-SSS; the necessary system information is transmitted using the NR-PBCH. As shown in fig. 1, the NR-PSS and NR-SSS sequences are both 127 long and are mapped on consecutive 127 subcarriers on one time domain OFDM symbol, the frequency domain Resource to be occupied is 12 Physical Resource blocks (hereinafter, referred to as NR-PRB), the bandwidth of the NR-PBCH is 288 subcarriers, and the frequency domain Resource to be occupied is 24 NR-PRB. Each SS block comprises NR-PSS, NR-SSS and NR-PBCH, the NR-PSS, the NR-SSS and the NR-PBCH are mapping relations of time division multiplexing, continuous 4 OFDM symbols are occupied, the NR-PSS is mapped before the NR-SSS, and the time domain sequence relation is as follows: NR-PSS-NR-PBCH-NR-SSS-NR-PBCH. Specifically, the NR-PSS occupies 127 consecutive subcarriers, the number of subcarriers of one NR-PRB in the frequency direction is 12, the NR-PSS occupies complete 10 NR-PRB length subcarrier resources on one OFDM symbol, and the NR-PSS is mapped on 3 and 4 subcarriers on adjacent subcarrier resources on both sides of these subcarrier resources, so that the NR-PSS should be set on 12 NR-PRBs, and the specific mapping manner is shown in fig. 2. Further, the NR-SSS is mapped onto the same subcarriers as the NR-PSS on the corresponding OFDM symbol.
In addition, in the design of the NR system, as shown in fig. 3, the SS block includes specific time information of current transmission, including: a System Frame Number (hereinafter abbreviated as SFN), and an indication c of the SS block in the first 5ms or the last 5ms of the System Frame in which the sync signal block is located0And a synchronization signal block time index (SS block time index). Further, in addition to transmitting the partial minimum information, the NR-PBCH needs to indicate the SS block time index of the terminal currently transmitting the NR-PBCH, where the SS block time index has 64 possible types at most and needs to transmit 6-bit information at most. However, no method for indicating the time index of the sync signal block is given in the prior art.
Disclosure of Invention
The embodiment of the invention provides an indication and detection method of a synchronous signal block time index, network equipment and a terminal, which aim to solve the problem of indication of the synchronous signal block time index.
In a first aspect, an embodiment of the present invention provides a method for indicating a synchronization signal block time index, which is applied to a network device side, and includes:
generating a plurality of demodulation reference signal (DMRS) sequences, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel (NR-PBCH) in a synchronization signal block;
and transmitting a plurality of DMRS sequences to the terminal, and indicating the synchronization signal block time index corresponding to the NR-PBCH through at least one DMRS sequence.
In a second aspect, an embodiment of the present invention further provides a network device, including:
the generating module is used for generating a plurality of demodulation reference signal (DMRS) sequences, and the DMRS sequences are used for demodulating a new air interface physical broadcast channel (NR-PBCH) in a synchronization signal block;
and the transmitting module is used for transmitting a plurality of DMRS sequences to the terminal and indicating the synchronization signal block time index corresponding to the NR-PBCH through at least one DMRS sequence.
In a third aspect, an embodiment of the present invention provides a network device, where the network device includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and the processor implements the steps in the method for indicating a synchronization signal block time index as described above when executing the computer program.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for indicating the time index of the synchronization signal block as described above.
In a fifth aspect, an embodiment of the present invention provides a method for detecting a time index of a synchronization signal block, which is applied to a terminal side, and includes:
receiving a plurality of DMRS sequences sent by network equipment, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel NR-PBCH in a synchronization signal block;
and determining the synchronization signal block time index information corresponding to the NR-PBCH according to the at least one DMRS sequence.
In a sixth aspect, an embodiment of the present invention further provides a terminal, including:
the receiving module is used for receiving a plurality of DMRS sequences sent by the network equipment, and the DMRS sequences are used for demodulating a new air interface physical broadcast channel NR-PBCH in the synchronization signal block;
and the processing module is used for determining the synchronization signal block time index information corresponding to the NR-PBCH according to the at least one DMRS sequence.
In a seventh aspect, an embodiment of the present invention provides a terminal, where the terminal includes a processor, a memory, and a computer program stored in the memory and being executable on the processor, and when the processor executes the computer program, the steps in the method for detecting a synchronization signal block time index as described above are implemented.
In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for detecting a synchronization signal block time index as described above.
Therefore, the embodiment of the invention indicates the time index of the synchronization signal block through the DMRS sequence, so that the terminal can rapidly acquire the time index of the synchronization signal block, and the utilization efficiency of the DMRS sequence is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 shows a schematic resource mapping of a synchronization signal block in an NR system;
fig. 2 shows a resource mapping diagram of PSS or SSS in an NR system;
fig. 3 is a diagram showing an information format of time information of a sync signal block in an NR system;
FIG. 4 is a flowchart illustrating a method for indicating a synchronization signal block time index according to an embodiment of the present invention;
fig. 5 is a diagram illustrating transmission resource partitioning according to a first embodiment of the present invention;
fig. 6 is a diagram illustrating transmission resource partitioning in a first embodiment of the present invention;
fig. 7 is a diagram illustrating transmission resource partitioning in a second embodiment of the present invention;
fig. 8 is a diagram illustrating transmission resource partitioning in a second embodiment of the present invention;
FIG. 9 is a block diagram of a network device according to an embodiment of the present invention;
FIG. 10 shows a block diagram of a network device in an embodiment of the invention;
FIG. 11 is a flowchart illustrating a method for detecting a synchronization signal block time index according to an embodiment of the invention;
fig. 12 is a schematic block diagram of a terminal according to an embodiment of the present invention;
fig. 13 shows a block diagram of a terminal in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
An embodiment of the present invention provides a method for indicating a time index of a synchronization signal block, which is applied to a network device side, and as shown in fig. 4, the method specifically includes the following steps:
step 41: a plurality of DMRS sequences is generated.
The Demodulation Reference Signal (DMRS) sequences are used to demodulate a new air interface physical broadcast channel NR-PBCH in a synchronization Signal block, that is, the DMRS sequences are DMRS sequences of the NR-PBCH.
Step 42: and transmitting a plurality of DMRS sequences to the terminal, and indicating the synchronization signal block time index corresponding to the NR-PBCH through at least one DMRS sequence.
The embodiment of the invention indicates the time index of the synchronization signal block through the DMRS sequence, so that the terminal can rapidly acquire the time index of the synchronization signal block, and the utilization efficiency of the DMRS sequence is improved.
In this embodiment, the DMRS sequences implicitly carry all or part of the information of the synchronization signal block time index, where one DMRS sequence may implicitly indicate at least one bit of information of the synchronization signal block time index. Specifically, the SS block time index may be transmitted in two parts, where 2-3 bits are indicated by means of DMRS sequences and the remaining bits are transmitted by means of NR-PBCH payload (payload). By carrying the SS block time index of 2 or 3 bits by the DMRS sequence of the NR-PBCH, when the terminal carries out the measurement of the adjacent cell, part of the SS block time index can be obtained without carrying out the detection decoding of the NR-PBCH, so that the terminal can quickly acquire the synchronous signal of the adjacent cell, and the terminal can quickly position and measure the adjacent cell.
Specifically, step 41 specifically includes: dividing the transmission resources of the NR-PBCH into N groups; and configuring DMRS sequences corresponding to the N groups of transmission resources. The DMRS sequence implicitly indicates M-bit information of a synchronization signal block time index, N is an integer larger than 1, and M is an integer larger than 0. That is, some or all of the resources of the DMRS sequence that maps the NR-PBCH are grouped, specifically, N groups are provided, and each group indicates M-bit information of the synchronization signal block time index by using a different sequence, so that N × M-bit information can be indicated. For example, transmission resources to which DMRS sequences of NR-PBCH are mapped are divided into N groups (N ═ 2 or 3), and the DMRS sequences in each transmission resource group indicate 1-bit information, so that N groups of transmission resources can transmit N-bit information in an SS block time index in common.
The preset parameters of the DMRS sequences are different, that is, different DMRS sequences have different preset parameters, and the preset parameters include: at least one of a sequence initialization value, a shift value, and a generator polynomial. The DMRS sequence may be a gold sequence, which is an exclusive or of 2M sequences, and the length of the output gold sequence c (n) is M, where n is 0,1, …, and M-1. Wherein, the initialization of the gold sequence can be realized according to the following modes:
c(n)=(x1(n+Nc)+x2(n+Nc) Mod2 formula one
x1(n+31)=(x1(n+3)+x1(n)) mod2 equation two
x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n)) mod2 equation three
Wherein N iscDenotes the shift value of the gold sequence, Nc=1600,x1Is x1(0)=1,x1(n)=0,n=0,1,…,30,x21Is initialized to
Figure BDA0001361469170000061
Figure BDA0001361469170000062
Wherein the content of the first and second substances,
Figure BDA0001361469170000063
is ID, S, of a cell or virtual cellIDTo initialize the IDs of the different sequences. Generating polynomials generating 2 m sequences expressed in formula two and formula three, and transmittingThe gold sequence is d (n) 1-2c (n).
In particular, S is initialized by different sequencesIDThe DMRS sequences are generated to be different, and different information is indicated by the different DMRS sequences. For example, if 1-bit information needs to be indicated by 2 DMRS sequences, 2 different initialization S' are usedIDOr 2 sequences with different shift values, or 2 gold sequences with different generator polynomials.
Further, S may be initialized by different sequencesIDAnd a shift value, wherein different DMRS sequences are generated by the combination of the two modes, and different information is indicated by the different DMRS sequences. For example, 3 bits of information need to be indicated by 8 sequences, 2 different sequence initializations S can be definedIDE.g. SID2 gold sequences are generated, 1-bit information is indicated by the two different sequences, 4 different shift values are further introduced in the 2 gold sequences, and 2-bit information is indicated by the 4 different shift values.
Further, S may also be initialized only by different sequencesIDIndicating different information. For example, 3-bit information needs to be indicated by 8 DMRS sequences, 8 different sequence initialization S may be definedIDE.g. SIDBy {0,1, …,7}, 8 gold sequences are generated, with the 8 different initialized sequences indicating 3-bit information.
In addition, 1-bit information may also be indicated by different mapping manners, for example, 2-bit information needs to be transmitted on a part of DMRS resources, and the indication may be performed in a manner that 2 different initialization ss are definedIDOr a sequence of 2 different shift values indicates 1-bit information. And indicating the other 1-bit information in a forward or reverse mapping mode on the DMRS resource.
The following describes a specific embodiment of the method for indicating the time index of the synchronization signal block according to the present invention in conjunction with different grouping modes.
The method I comprises the steps of dividing transmission resources of NR-PBCH into 4 groups; and configuring DMRS sequences corresponding to 4 groups of transmission resources.
Specifically, the transmission resources of the NR-PBCH are divided into a first group of transmission resources, a second group of transmission resources, a third group of transmission resources, and a fourth group of transmission resources; a first DMRS sequence corresponding to a first group of transmission resources, a second DMRS sequence corresponding to a second group of transmission resources, a third DMRS sequence corresponding to a third group of transmission resources, and a fourth DMRS sequence corresponding to a fourth group of transmission resources are configured, respectively.
Wherein the first set of transmission resources is: and the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources, the third group of transmission resources and the fourth group of transmission resources are as follows: the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS which belong to the same synchronization signal block with the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the transmission resources of the NR-PBCH. Specifically, the transmission resources of the DMRS sequence of the NR-PBCH are divided into 4 parts, wherein the frequency domain resources on the first or second OFDM symbol of the NR-PBCH outside the PSS or SSS bandwidth are the first set of transmission resources.
Specifically, different information is indicated by DMRS sequences in transmission resources of different packets. Wherein the DMRS sequence that can be transmitted over the first set of transmission resources implicitly carries an indication c0Namely, the first group of transmission resources is used for implicitly indicating that the synchronization signal block to which the R-PBCH belongs is located in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is located. That is, the first set of transmission resources is independent of the synchronization signal block time index, only of the cell ID and the indication c0In connection with, i.e. by transmitting DMRS sequence indications c in the first set of transmission resources0
Further, the DMRS sequence transmitted through each of the other three sets of transmission resources (the second set of transmission resources, the third set of transmission resources, and the fourth set of transmission resources) may implicitly carry a one-bit synchronization signal block time index. I.e. its second, third and fourth DMRS sequencesAnd four DMRS sequences respectively used for implicitly indicating one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH. That is, 3-bit information of the synchronization signal block time index is indicated by 3 DMRS sequences in other three sets of transmission resources, and the DMRS sequences transmitted on these transmission resources are not only related to the cell ID but also related to the synchronization signal block time index. It is worth noting that the DMRS sequences transmitted on the first set of transmission resources are related to the cell ID and not to the synchronization signal block time index, and the first set of transmission resources may further be related to the indication c0And (4) correlating.
Further, the network device may implicitly carry the indication c through the DMRS sequence transmitted by one of the other three sets of transmission resources0Namely, one of the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, is used to implicitly indicate that the synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is located. That is, in the other three groups of transmission resources, the 1 DMRS sequence indicates that the synchronization signal block is located in the first 5ms or the last 5ms of the system frame where the synchronization signal block is located, and the DMRS sequences transmitted on these transmission resources are not only related to the cell ID, but also related to the indication c0And (4) correlating. The network equipment can also implicitly carry the two-bit synchronization signal block time index through the DMRS sequences transmitted by the other two groups of the other three groups of transmission resources. Namely, the other two DMRS sequences of the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence are used to implicitly indicate one bit of information of a synchronization signal block time index corresponding to the NR-PBCH, respectively. And respectively indicating 2-bit information of the time index of the synchronization signal block by using another 2 DMRS sequences in other three groups of transmission resources, wherein the DMRS sequences transmitted on the transmission resources are not only related to the cell ID, but also related to the time index of the synchronization signal block. It is worth noting that the DMRS sequences transmitted on the first set of transmission resources are related to the cell ID and not to the synchronization signal block time index.
Further, as shown in fig. 5, the first set of transmission resources is: the NR-PBCH transmission resources are located on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource, where the preset time domain symbol may be a first OFDM symbol or a second OFDM symbol, and the first OFDM symbol is taken as an example in the figure. Other three sets of transmission resources include: a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources. Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources; the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except a preset time domain symbol and occupy the transmission resources of the first frequency domain resources; the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
Further, as shown in fig. 6, the first set of transmission resources is: and the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource. Other three sets of transmission resources include: a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources. Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources; the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources (12 PRBs at low frequency) lower than the preset frequency; the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources (high-frequency 12 PRBs) higher than the preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
The division of the transmission resources of the DMRS sequences of the NR-PBCH into 4 groups is described above, and the present embodiment further describes the division of the transmission resources of the DMRS sequences of the NR-PBCH into 2 groups.
The second mode is that the transmission resources of the NR-PBCH are divided into 2 groups; and configuring DMRS sequences corresponding to the 2 groups of transmission resources.
Specifically, the transmission resources of the NR-PBCH are divided into a first set of transmission resources and a second set of transmission resources; first DMRS sequences corresponding to a first set of transmission resources and second DMRS sequences corresponding to a second set of transmission resources are configured, respectively.
Wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources are: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS attributed to the same synchronization signal block as the NR-PBCH, except for a first set of transmission resources among transmission resources of the NR-PBCH. In particular, the transmission resources of the DMRS sequence of the NR-PBCH are divided into 2 parts, wherein the frequency domain resources outside the PSS or SSS bandwidth on the first and/or second OFDM symbol of the NR-PBCH are the first set of transmission resources.
As shown in fig. 7, the first set of transmission resources is: on one OFDM symbol (for example, the first OFDM symbol in the figure), other frequency domain resources except the first frequency domain resources in the transmission resources of the NR-PBCH. The other transmission resources are transmission resources other than the first set of transmission resources of the NR-PBCH.
As shown in fig. 8, the first set of transmission resources is: and other frequency domain resources except the first frequency domain resource on two OFDM symbols in the transmission resource of the NR-PBCH. The other transmission resources are transmission resources other than the first set of transmission resources of the NR-PBCH.
Specifically, different information is indicated by DMRS sequences in transmission resources of different packets. Wherein the DMRS sequence that can be transmitted over the first set of transmission resources implicitly carries an indication c0That is, the first DMRS sequence is used to implicitly indicate that the synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is located. That is, the first set of transmission resources is independent of the synchronization signal block time index, only of the cell ID and the indication c0In connection with, i.e. by transmitting DMRS sequence indications c in the first set of transmission resources0
Further, M-bit synchronization signal block time indexes may also be implicitly carried by DMRS sequences transmitted in other transmission resources. Namely, a second DMRS sequence for implicitly indicating M-bit information of a synchronization signal block time index corresponding to the NR-PBCH, where M is an integer greater than 0. Wherein, the M bit information is 2 bit information or 3 bit information. That is, M (e.g., M ═ 3) bit information indicating a synchronization signal block time index is indicated by 1 DMRS sequence in other transmission resources on which the DMRS sequence is transmitted not only with respect to a cell ID but also with respect to the synchronization signal block time index.
In the method for indicating the time index of the synchronization signal block in the embodiment of the invention, the network equipment implicitly indicates the time index of the synchronization signal block through the plurality of DMRS sequences, and implicitly carries part of information of the time index of the synchronization signal block through the DMRS sequence of the NR-PBCH, so that when the terminal carries out adjacent cell measurement, part of the time index of the synchronization signal block can be obtained without carrying out detection and decoding of the NR-PBCH, the terminal can quickly acquire the synchronization signal of the adjacent cell, and the quick positioning and measurement of the adjacent cell are convenient.
The above embodiments respectively describe in detail the indication methods of the synchronization signal block time index in different scenarios, and the following embodiments will further describe the corresponding network devices with reference to the accompanying drawings.
As shown in fig. 9, the network device 900 according to the embodiment of the present invention can implement the generation of multiple DMRS sequences for demodulating a new air interface physical broadcast channel NR-PBCH in a synchronization signal block in the foregoing embodiment; the method includes sending a plurality of DMRS sequences to a terminal, and indicating details of a synchronization signal block time index method corresponding to NR-PBCH through at least one DMRS sequence, and achieving the same effect, where the network device 900 specifically includes the following functional modules:
a generating module 910, configured to generate multiple DMRS sequences for demodulating a new air interface physical broadcast channel NR-PBCH in a synchronization signal block;
a sending module 920, configured to send a plurality of DMRS sequences to a terminal, and indicate, through at least one DMRS sequence, a synchronization signal block time index corresponding to the NR-PBCH.
The embodiment of the invention indicates the time index of the synchronization signal block through the DMRS sequence, so that the terminal can rapidly acquire the time index of the synchronization signal block, and the utilization efficiency of the DMRS sequence is improved.
Wherein, the generating module 910 includes:
a grouping submodule for dividing the transmission resources of the NR-PBCH into N groups;
the configuration submodule is used for configuring DMRS sequences corresponding to the N groups of transmission resources; the DMRS sequence implicitly indicates M-bit information of a synchronization signal block time index, N is an integer greater than 1, and M is an integer greater than 0.
Wherein, the grouping submodule includes:
a first grouping unit for dividing the transmission resources of the NR-PBCH into a first group of transmission resources, a second group of transmission resources, a third group of transmission resources, and a fourth group of transmission resources;
the configuration submodule includes:
a first configuration unit, configured to configure a first DMRS sequence corresponding to a first group of transmission resources, a second DMRS sequence corresponding to a second group of transmission resources, a third DMRS sequence corresponding to a third group of transmission resources, and a fourth DMRS sequence corresponding to a fourth group of transmission resources, respectively;
wherein the first set of transmission resources is: and the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources, the third group of transmission resources and the fourth group of transmission resources are as follows: the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS which belong to the same synchronization signal block as the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the transmission resources of the NR-PBCH.
The first DMRS sequence is used for implicitly indicating that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located.
The second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence are respectively used for implicitly indicating one bit of information of a synchronization signal block time index corresponding to the NR-PBCH.
One of the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence is used for implicitly indicating that the synchronization signal block is positioned in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is positioned;
and the other two DMRS sequences in the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence are respectively used for implicitly indicating one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than the preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than the preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
Wherein, the grouping submodule includes:
a second grouping unit for dividing the transmission resources of the NR-PBCH into a first group of transmission resources and a second group of transmission resources;
the configuration submodule includes:
a second configuration unit, configured to configure a first DMRS sequence corresponding to the first group of transmission resources and a second DMRS sequence corresponding to the second group of transmission resources, respectively;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources are: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS attributed to the same synchronization signal block as the NR-PBCH, except for a first set of transmission resources among transmission resources of the NR-PBCH.
The first DMRS sequence is used for implicitly indicating that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located.
And the second DMRS sequence is used for implicitly indicating M-bit information of a synchronization signal block time index corresponding to the NR-PBCH, wherein M is an integer larger than 0.
Wherein, the M bit information is 2 bit information or 3 bit information.
The preset parameters of the DMRS sequences are different, and the preset parameters comprise: at least one of a sequence initialization value, a shift value, and a generator polynomial.
It is worth pointing out that, the network device of the embodiment of the present invention implicitly indicates the synchronization signal block time index through the multiple DMRS sequences, and implicitly carries part of information of the synchronization signal block time index through the DMRS sequences of the NR-PBCH, so that when the terminal performs the measurement of the neighboring cell, the terminal can obtain part of the synchronization signal block time index without performing the detection and decoding of the NR-PBCH, so that the terminal can quickly obtain the synchronization signal of the neighboring cell, and thus the terminal can quickly locate and measure the neighboring cell.
In order to better achieve the above object, an embodiment of the present invention further provides a network device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps in the indication method of the synchronization signal block time index as described above when executing the computer program.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for indicating a synchronization signal block time index as described above are implemented.
Specifically, the embodiment of the invention also provides a network device. As shown in fig. 10, the network device 1000 includes: antenna 101, radio frequency device 102, baseband device 103. Antenna 101 is connected to radio frequency device 102. In the uplink direction, rf device 102 receives information via antenna 101 and sends the received information to baseband device 103 for processing. In the downlink direction, the baseband device 103 processes information to be transmitted and transmits the information to the rf device 102, and the rf device 102 processes the received information and transmits the processed information through the antenna 101.
The above-mentioned band processing means may be located in the baseband apparatus 103, and the method performed by the network device in the above embodiment may be implemented in the baseband apparatus 103, where the baseband apparatus 103 includes the processor 104 and the memory 105.
The baseband apparatus 103 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 10, where one of the chips, for example, the processor 104, is connected to the memory 105 to call up a program in the memory 105 to perform the network device operations shown in the above method embodiments.
The baseband device 103 may further include a network interface 106, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 102.
The processor may be a single processor or a combination of multiple processing elements, for example, the processor may be a CPU, an ASIC, or one or more integrated circuits configured to implement the methods performed by the network devices, for example: one or more microprocessors DSP, or one or more field programmable gate arrays FPGA, or the like. The storage element may be a memory or a combination of a plurality of storage elements.
The memory 105 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (ddr Data Rate SDRAM), Enhanced SDRAM (ESDRAM), synchlronous DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 105 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
Specifically, the network device of the embodiment of the present invention further includes: a computer program stored in the memory 105 and operable on the processor 104, the processor 104 calling the computer program in the memory 105 to execute the method performed by each module shown in fig. 9.
In particular, the computer program, when invoked by the processor 104, is operable to perform: generating a plurality of demodulation reference signal (DMRS) sequences, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel (NR-PBCH) in a synchronization signal block;
and transmitting a plurality of DMRS sequences to the terminal, and indicating the synchronization signal block time index corresponding to the NR-PBCH through at least one DMRS sequence.
The embodiment of the invention indicates the time index of the synchronization signal block through the DMRS sequence, so that the terminal can rapidly acquire the time index of the synchronization signal block, and the utilization efficiency of the DMRS sequence is improved.
In particular, the computer program, when invoked by the processor 104, is operable to perform: dividing the transmission resources of the NR-PBCH into N groups;
configuring DMRS sequences corresponding to the N groups of transmission resources; the DMRS sequence implicitly indicates M-bit information of a synchronization signal block time index, N is an integer greater than 1, and M is an integer greater than 0.
In particular, the computer program, when invoked by the processor 104, is operable to perform: dividing the transmission resources of the NR-PBCH into a first group of transmission resources, a second group of transmission resources, a third group of transmission resources and a fourth group of transmission resources;
respectively configuring a first DMRS sequence corresponding to a first group of transmission resources, a second DMRS sequence corresponding to a second group of transmission resources, a third DMRS sequence corresponding to a third group of transmission resources and a fourth DMRS sequence corresponding to a fourth group of transmission resources;
wherein the first set of transmission resources is: and the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources, the third group of transmission resources and the fourth group of transmission resources are as follows: the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS which belong to the same synchronization signal block with the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the transmission resources of the NR-PBCH.
The first DMRS sequence is used for implicitly indicating that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located.
The second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence are respectively used for implicitly indicating one bit of information of a synchronization signal block time index corresponding to the NR-PBCH.
One of the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence is used for implicitly indicating that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located;
and the other two DMRS sequences in the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence are respectively used for implicitly indicating one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than the preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than the preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
In particular, the computer program, when invoked by the processor 104, is operable to perform: dividing the transmission resources of the NR-PBCH into a first set of transmission resources and a second set of transmission resources;
respectively configuring a first DMRS sequence corresponding to a first group of transmission resources and a second DMRS sequence corresponding to a second group of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources are: and the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS belonging to the same synchronization signal block with the NR-PBCH.
The first DMRS sequence is used for implicitly indicating that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located.
And the second DMRS sequence is used for implicitly indicating M-bit information of a synchronization signal block time index corresponding to the NR-PBCH, wherein M is an integer larger than 0.
Wherein, the M bit information is 2 bit information or 3 bit information.
The preset parameters of the DMRS sequences are different, and the preset parameters comprise: at least one of a sequence initialization value, a shift value, and a generator polynomial.
The network device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, a Base Station in a future 5G network, or the like, which is not limited herein.
The network equipment in the embodiment of the invention implicitly indicates the time index of the synchronization signal block through the plurality of DMRS sequences, and implicitly carries part of information of the time index of the synchronization signal block through the DMRS sequence of the NR-PBCH, so that when the terminal carries out the measurement of the adjacent cell, the time index of the part of the synchronization signal block can be obtained without carrying out the detection and decoding of the NR-PBCH, and the terminal can quickly acquire the synchronization signal of the adjacent cell, thereby being convenient for the quick positioning and measurement of the adjacent cell.
The above embodiment describes the method for indicating the synchronization signal block time index of the present invention from the network device side, and the following embodiment further describes the method for detecting the synchronization signal block time index of the terminal side with reference to the drawings.
The method for detecting the time index of the synchronization signal block in the embodiment of the present invention is applied to a terminal side, and as shown in fig. 11, the method specifically includes the following steps:
step 111: receiving a plurality of DMRS sequences transmitted by a network device.
The plurality of DMRS sequences are used for demodulating a new air interface physical broadcast channel NR-PBCH in a synchronization signal block. DMRS sequences are different, and corresponding synchronization signal block time indexes are different. The preset parameters of the plurality of DMRS sequences are different, that is, different DMRS sequences have different preset parameters, and the preset parameters include: at least one of a sequence initialization value, a shift value, and a generator polynomial. Here, the DMRS sequences implicitly carry all or part of information of the synchronization signal block time index, wherein one DMRS sequence may implicitly indicate at least one bit of information of the synchronization signal block time index. Specifically, the SS block time index may be transmitted in two parts, where 2 or 3 bits are indicated by means of DMRS sequences and the remaining bits are transmitted by means of NR-PBCH payload (payload).
Step 112: and determining the synchronization signal block time index information corresponding to the NR-PBCH according to the at least one DMRS sequence.
By carrying the SS block time index of 2 or 3 bits by the DMRS sequence of the NR-PBCH, when the terminal carries out the measurement of the adjacent cell, part of the SS block time index can be obtained without carrying out the detection decoding of the NR-PBCH, so that the terminal can quickly acquire the synchronous signal of the adjacent cell, and the terminal can quickly position and measure the adjacent cell.
Specifically, step 111 includes: and receiving the DMRS sequences which are sent by the network equipment and correspond to the N groups of transmission resources through the N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH. Step 112 includes: and determining M-bit information of a synchronization signal block time index corresponding to the NR-PBCH according to the DMRS sequences transmitted in at least one group of transmission resources, wherein N is an integer larger than 1, and M is an integer larger than 0. Wherein, the DMRS sequence implicitly indicates M-bit information of the synchronization signal block time index, and M, N are integers greater than 0. For example, N (N ═ 2 or 3) sets of DMRS sequences each indicating 1-bit information by NR-PBCH, N sets of transmission resources can transmit N-bit information in the SS block time index in common.
Wherein N is 4, and the N sets of transmission resources include: a first set of transmission resources, a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources. The step of receiving the DMRS sequences corresponding to the N groups of transmission resources sent by the network equipment through the N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH comprises the following steps: receiving a first DMRS sequence transmitted by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources; receiving a third DMRS sequence sent by the network device through a third set of transmission resources; receiving a fourth DMRS sequence sent by the network equipment through a fourth group of transmission resources; wherein the first set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource;
the second, third and fourth sets of transmission resources are: the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS which belong to the same synchronization signal block with the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the transmission resources of the NR-PBCH.
After the step of receiving the DMRS sequences corresponding to the N groups of transmission resources sent by the network device through the N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH, the method further includes: and determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
The step of determining M-bit information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the DMRS sequence transmitted in at least one group of transmission resources comprises the following steps: and respectively determining one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence.
After the step of receiving the DMRS sequences corresponding to the N groups of transmission resources sent by the network device through the N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH, the method further includes: determining a synchronization signal block to which the NR-PBCH belongs to be positioned in the front 5ms or the rear 5ms of a system frame in which the synchronization signal block is positioned according to one of the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence; and respectively determining one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the other two DMRS sequences in the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence. That is, one of the second, third and fourth sets of transmission resources receives the DMRS sequence of the NR-PBCH transmitted by the network device; the DMRS sequence is used to implicitly indicate that the synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is located. Receiving the DMRS sequence of the NR-PBCH transmitted by the network equipment through the other two groups of transmission resources of the second group of transmission resources, the third group of transmission resources and the fourth group of transmission resources; the DMRS sequence is used to implicitly indicate one bit of information of a synchronization signal block time index corresponding to the NR-PBCH.
Further, the other three sets of transmission resources include: a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources. Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources; the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except a preset time domain symbol and occupy the transmission resources of the first frequency domain resources; the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
Alternatively, the other three sets of transmission resources include: a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources. Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources; the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than the preset frequency; the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than the preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
It should be noted that the embodiment when N is 4 corresponds to the embodiment of the first embodiment, and therefore, the description thereof is omitted.
Further, N is 2, and the 2 sets of transmission resources include: the step of receiving the DMRS sequences corresponding to the N groups of transmission resources sent by the network device through the N groups of transmission resources obtained by dividing the NR-PBCH transmission resources includes: receiving a first DMRS sequence transmitted by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources; wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources are: and the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS belonging to the same synchronization signal block with the NR-PBCH.
Specifically, the step of receiving, through the first set of transmission resources, the first DMRS sequence transmitted by the network device further includes: and determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
Further, the step of receiving, by the second set of transmission resources, the second DMRS sequence transmitted by the network device further includes: and determining M-bit information of a synchronization signal block time index corresponding to the NR-PBCH according to the second DMRS sequence, wherein M is an integer larger than 0. Wherein, the M bit information is 2 bit information or 3 bit information.
It should be noted that the embodiment when N is 2 corresponds to the embodiment of the second embodiment, and therefore, the description thereof is omitted.
Further, the step of receiving the DMRS sequences corresponding to the N groups of transmission resources sent by the network device through the N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH includes:
and receiving and detecting a demodulation reference signal (DMRS) sequence of a new air interface physical broadcast channel (NR-PBCH) sent by the network equipment on the N groups of transmission resources by adopting a coherent detection mode. The non-coherent detection directly performs DMRS sequence detection on the received NR-PBCH signal without using channel estimation.
Or, receiving and detecting a demodulation reference signal (DMRS) sequence of a new air interface physical broadcast channel (NR-PBCH) sent by the network equipment on the N groups of transmission resources by adopting a non-coherent detection mode. The other is coherent detection, i.e. DMRS sequence detection is performed on the received NR-PBCH signal using the already obtained channel estimates.
Further, the coherent detection mode can be specifically realized by the following modes: performing channel estimation on transmission resources corresponding to the NR-PSS or the NR-SSS to obtain a corresponding channel estimation result; and according to the channel estimation result, carrying out coherent detection on the demodulation reference signal (DMRS) sequence of the new air interface physical broadcast channel (NR-PBCH) sent by the network equipment on the N groups of transmission resources. That is, the terminal obtains, through the PSS or SSS, a channel estimate on the PRB transmitting the PSS or SSS, and uses the channel estimate to perform coherent detection on a DMRS sequence transmitted outside the PRB bandwidth transmitting the PSS or SSS.
Further, the coherent detection mode can be specifically realized by the following modes: performing channel estimation on the transmission resources which correspond to the DMRS of the NR-PBCH and do not carry information on the N groups of transmission resources to obtain corresponding channel estimation results; and carrying out coherent detection on the DMRS sequence of the NR-PBCH transmitted by the network equipment according to the channel estimation result. Specifically, the DMRS sequences are transmitted outside the PRB bandwidth for transmitting PSS and SSS, and the DMRS sequences transmitted in the corresponding resource on one OFDM symbol carry information, and the DMRS sequences in the corresponding resource on the other OFDM symbol do not carry information. In this case, channel estimation is performed on the DMRS sequence that does not carry information, and coherent detection is performed on the DMRS sequence that carries information using the channel estimation.
Further, the coherent detection mode can be specifically realized by the following modes: performing incoherent detection on the transmission resources which correspond to the DMRS of the NR-PBCH and carry information on the N groups of transmission resources to obtain a transmission sequence; determining a channel estimation result corresponding to the transmission resource according to the transmission sequence; and carrying out coherent detection on the DMRS sequence of the NR-PBCH transmitted by the network equipment according to the channel estimation result. Specifically, DMRS sequences are transmitted outside the PRB bandwidth for transmitting PSS and SSS, and the DMRS sequences transmitted within the resources corresponding to 2 OFDM symbols all carry information. And carrying out non-coherent detection on the DMRS sequence on one OFDM symbol, carrying out channel estimation according to the DMRS sequence obtained by the non-coherent detection, and carrying out coherent detection on the other DMRS sequence carrying information by using the channel estimation.
In the method for detecting the time index of the synchronization signal block, the terminal receives the DMRS sequence of the NR-PBCH sent by the network equipment, and further detects the DMRS sequence to determine the time index of the synchronization signal block of the current synchronization signal block, so that when the adjacent cell is measured, the time index of a part of the synchronization signal block can be obtained without detecting and decoding the NR-PBCH, the terminal can quickly acquire the synchronization signal of the adjacent cell, and the quick positioning and measurement of the adjacent cell are convenient.
The above embodiments describe the method for detecting the time index of the synchronization signal block in different scenarios, and the following describes a terminal corresponding to the method with reference to the accompanying drawings.
As shown in fig. 12, a terminal 1200 according to an embodiment of the present invention can implement receiving multiple DMRS sequences sent by a network device in the foregoing embodiment; according to at least one of the DMRS sequences, determining details of a synchronization signal block time index information method corresponding to the NR-PBCH, and achieving the same effect, where multiple DMRS sequences are used to demodulate a new air interface physical broadcast channel NR-PBCH in a synchronization signal block, where the terminal 1200 specifically includes the following functional modules:
a receiving module 1210, configured to receive multiple DMRS sequences sent by a network device, where the multiple DMRS sequences are used to demodulate a new air interface physical broadcast channel NR-PBCH in a synchronization signal block;
a processing module 1220, configured to determine, according to the at least one DMRS sequence, synchronization signal block time index information corresponding to the NR-PBCH.
Wherein, the receiving module 1210 includes:
the receiving submodule is used for receiving the DMRS sequences which are sent by the network equipment and correspond to the N groups of transmission resources through the N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH;
the processing module 1220 includes:
and the processing submodule is used for determining M-bit information of a synchronization signal block time index corresponding to the NR-PBCH according to the DMRS sequences transmitted in at least one group of transmission resources, wherein N is an integer larger than 1, and M is an integer larger than 0.
Wherein N is 4, and the N sets of transmission resources include: a first set of transmission resources, a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources;
the receiving submodule includes:
a first receiving unit, configured to receive a first DMRS sequence sent by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources; receiving a third DMRS sequence sent by the network device through a third set of transmission resources; receiving a fourth DMRS sequence sent by the network equipment through a fourth group of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource;
the second, third and fourth sets of transmission resources are: and the other transmission resources except the first group of transmission resources in the transmission resources of the NR-PBCH, the first frequency domain resource is used for transmitting NR-PSS and/or NR-SSS belonging to the same synchronization signal block with the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the transmission resources of the NR-PBCH.
Wherein, receiving the submodule and including:
and the first processing unit is used for determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
Wherein, the processing submodule includes:
and the second processing unit is used for respectively determining one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence.
Wherein, the receiving submodule also includes:
a third processing unit, configured to determine, according to one of the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located;
and a fourth processing unit, configured to determine, according to the other two DMRS sequences of the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, one bit of information of a synchronization signal block time index corresponding to the NR-PBCH.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than the preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than the preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
Wherein N is 2, and the N sets of transmission resources include: a first set of transmission resources and a second set of transmission resources;
a receive submodule, comprising:
a second receiving unit, configured to receive, through the first group of transmission resources, a first DMRS sequence sent by the network device; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources are: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS attributed to the same synchronization signal block as the NR-PBCH, except for a first set of transmission resources among transmission resources of the NR-PBCH.
Wherein, the receiving submodule also includes:
and the fifth processing unit is used for determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
Wherein, the processing submodule includes:
and a sixth processing unit, configured to determine, according to the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, M-bit information of a synchronization signal block time index corresponding to the NR-PBCH, where M is an integer greater than 0.
Wherein, the M bit information is 2 bit information or 3 bit information.
The different DMRS sequences have different preset parameters, and the preset parameters comprise: at least one of a sequence initialization value, a shift value, and a generator polynomial.
Wherein, receiving the submodule and including:
a second receiving unit, configured to receive and detect, on the N groups of transmission resources, a demodulation reference signal DMRS sequence of a new air interface physical broadcast channel NR-PBCH sent by the network device in a coherent detection manner; alternatively, the first and second electrodes may be,
and a third receiving unit, configured to receive and detect, on the N groups of transmission resources, a demodulation reference signal DMRS sequence of a new air interface physical broadcast channel NR-PBCH sent by the network device in a non-coherent detection manner.
Wherein the second receiving unit includes:
the first channel estimation subunit is used for carrying out channel estimation on the transmission resources corresponding to the NR-PSS or the NR-SSS and obtaining a corresponding channel estimation result on the N groups of transmission resources;
and the first detection subunit is configured to perform coherent detection on a demodulation reference signal DMRS sequence of a new air interface physical broadcast channel NR-PBCH sent by the network device according to the channel estimation result.
Wherein the second receiving unit includes:
a second channel estimation subunit, configured to perform channel estimation on transmission resources, which correspond to the DMRS of the NR-PBCH and do not carry information, on the N groups of transmission resources, to obtain a corresponding channel estimation result;
and the second detection subunit is used for carrying out coherent detection on the DMRS sequence of the NR-PBCH sent by the network equipment according to the channel estimation result.
Wherein the second receiving unit includes:
a third detection subunit, configured to perform non-coherent detection on the transmission resources that correspond to the DMRS of the NR-PBCH and carry information on the N groups of transmission resources, to obtain a transmission sequence;
a third channel estimation subunit, configured to determine, according to the transmission sequence, a channel estimation result corresponding to the transmission resource;
and the fourth detection subunit is configured to perform coherent detection on the DMRS sequence of the NR-PBCH sent by the network device according to the channel estimation result.
It is worth pointing out that, the terminal according to the embodiment of the present invention receives the DMRS sequence of the NR-PBCH sent by the network device, and further detects the DMRS sequence to determine the synchronization signal block time index of the current synchronization signal block, so that when performing measurement in the neighboring cell, part of the synchronization signal block time index can be obtained without performing detection and decoding of the NR-PBCH, so that the terminal can quickly acquire the synchronization signal of the neighboring cell, and thus, quick positioning and measurement of the neighboring cell are facilitated.
It should be noted that the division of the modules of the network device and the terminal is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the determining module may be a processing element separately set up, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the determining module is called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
In order to better achieve the above object, an embodiment of the present invention further provides a terminal, which includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps in the method for detecting a synchronization signal block time index as described above are implemented. An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for detecting a synchronization signal block time index as described above are implemented.
Specifically, fig. 13 is a block diagram of a terminal 1300 according to another embodiment of the present invention, where the terminal shown in fig. 13 includes: at least one processor 1301, memory 1302, user interface 1303, and network interface 1304. The various components in terminal 1300 are coupled together by a bus system 1305. It is understood that the bus system 1305 is used to implement connective communication between these components. The bus system 1305 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in FIG. 13 as the bus system 1305.
The user interface 1303 may include, among other things, a display or a pointing device (e.g., a touch pad or touch screen, etc.).
It is to be understood that the memory 1302 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1302 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 1302 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 13021 and application programs 13022.
The operating system 13021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs 13022 include various application programs such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. A program for implementing the method of an embodiment of the present invention may be included in the application 13022.
In an embodiment of the present invention, terminal 1300 further includes: a computer program stored on the memory 1302 and executable on the processor 1301, in particular a computer program in an application 13022, which computer program when executed by the processor 1301 performs the steps of: receiving a plurality of DMRS sequences sent by network equipment, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel NR-PBCH in a synchronization signal block; and determining the synchronization signal block time index information corresponding to the NR-PBCH according to at least one DMRS sequence.
The method disclosed by the above embodiment of the present invention may be applied to the processor 1301, or implemented by the processor 1301. Processor 1301 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1301. The Processor 1301 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be 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 decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. 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 1302, and the processor 1301 reads information in the memory 1302, and completes the steps of the method in combination with hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions of the present Application, or a combination thereof.
For a software implementation, the techniques herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: receiving DMRS sequences which are sent by network equipment and correspond to the N groups of transmission resources through N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH; and determining M-bit information of a synchronization signal block time index corresponding to the NR-PBCH according to the DMRS sequences transmitted in at least one group of transmission resources, wherein N is an integer larger than 1, and M is an integer larger than 0.
Specifically, N is 4, and the N sets of transmission resources include: a first set of transmission resources, a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources; the computer program when executed by the processor 1301 may also implement the steps of: receiving a first DMRS sequence transmitted by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources; receiving a third DMRS sequence sent by the network device through a third set of transmission resources; receiving a fourth DMRS sequence sent by the network equipment through a fourth group of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource;
the second, third and fourth sets of transmission resources are: the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS which belong to the same synchronization signal block with the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the transmission resources of the NR-PBCH.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: and determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: and respectively determining one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: determining a synchronization signal block to which the NR-PBCH belongs to be positioned in the front 5ms or the rear 5ms of a system frame in which the synchronization signal block is positioned according to one of the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence;
and respectively determining one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the other two DMRS sequences in the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
Wherein the second set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than the preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than the preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
Wherein N is 2, and the N sets of transmission resources include: a first set of transmission resources and a second set of transmission resources; the computer program when executed by the processor 1301 may also implement the steps of: receiving a first DMRS sequence transmitted by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second group of transmission resources are: and the first frequency domain resource is used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS belonging to the same synchronization signal block with the NR-PBCH.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: and determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: and determining M-bit information of a synchronization signal block time index corresponding to the NR-PBCH according to the second DMRS sequence, wherein M is an integer larger than 0.
Wherein, the M bit information is 2 bit information or 3 bit information.
The different DMRS sequences have different preset parameters, and the preset parameters comprise: at least one of a sequence initialization value, a shift value, and a generator polynomial.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: receiving and detecting a demodulation reference signal (DMRS) sequence of a new air interface physical broadcast channel (NR-PBCH) sent by network equipment on N groups of transmission resources in a coherent detection mode; alternatively, the first and second electrodes may be,
and receiving and detecting a demodulation reference signal (DMRS) sequence of a new air interface physical broadcast channel (NR-PBCH) sent by the network equipment on the N groups of transmission resources by adopting a non-coherent detection mode.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: performing channel estimation on transmission resources corresponding to the NR-PSS or the NR-SSS to obtain a corresponding channel estimation result;
and according to the channel estimation result, carrying out coherent detection on the demodulation reference signal (DMRS) sequence of the new air interface physical broadcast channel (NR-PBCH) sent by the network equipment on the N groups of transmission resources.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: performing channel estimation on the transmission resources which correspond to the DMRS of the NR-PBCH and do not carry information on the N groups of transmission resources to obtain corresponding channel estimation results;
and carrying out coherent detection on the DMRS sequence of the NR-PBCH transmitted by the network equipment according to the channel estimation result.
In particular, the computer program, when executed by the processor 1301, may also implement the steps of: performing incoherent detection on the transmission resources which correspond to the DMRS of the NR-PBCH and carry information on the N groups of transmission resources to obtain a transmission sequence;
determining a channel estimation result corresponding to the transmission resource according to the transmission sequence;
and carrying out coherent detection on the DMRS sequence of the NR-PBCH transmitted by the network equipment according to the channel estimation result.
A terminal may be a wireless terminal or a wired terminal, and a wireless terminal may be a device providing voice and/or other service data connectivity to a user, a handheld device having a wireless connection function, or other processing devices connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, e.g., a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. For example, devices such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs) are used. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein.
The terminal of the embodiment of the invention receives the DMRS sequence of the NR-PBCH sent by the network equipment and further detects the DMRS sequence to determine the synchronization signal block time index of the current synchronization signal block, so that when the adjacent cell is measured, the terminal can acquire part of the synchronization signal block time index without detecting and decoding the NR-PBCH, and can quickly acquire the synchronization signal of the adjacent cell, thereby being convenient for quick positioning and measurement of the adjacent cell.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims (60)

1. A method for indicating a synchronization signal block time index is applied to a network device side, and is characterized by comprising the following steps:
generating a plurality of demodulation reference signal (DMRS) sequences, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel (NR-PBCH) in a synchronization signal block;
transmitting the plurality of DMRS sequences to a terminal, and indicating a synchronization signal block time index corresponding to the NR-PBCH through at least one DMRS sequence;
the step of generating a plurality of demodulation reference signal (DMRS) sequences comprises:
dividing the transmission resources of the NR-PBCH into N groups;
configuring DMRS sequences corresponding to the N groups of transmission resources; the DMRS sequence implicitly indicates M-bit information of a synchronization signal block time index, N is an integer larger than 1, and M is an integer larger than 0.
2. The method of claim 1, wherein the step of dividing the transmission resources of the NR-PBCH into N groups comprises:
dividing the transmission resources of the NR-PBCH into a first group of transmission resources, a second group of transmission resources, a third group of transmission resources and a fourth group of transmission resources;
the step of configuring the DMRS sequences corresponding to the N groups of transmission resources includes:
respectively configuring a first DMRS sequence corresponding to a first group of transmission resources, a second DMRS sequence corresponding to a second group of transmission resources, a third DMRS sequence corresponding to a third group of transmission resources and a fourth DMRS sequence corresponding to a fourth group of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on a preset time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second, third, and fourth sets of transmission resources are: the first frequency domain resource is a frequency domain resource used for transmitting a new air interface primary synchronization signal NR-PSS and/or a new air interface secondary synchronization signal NR-SSS belonging to the same synchronization signal block as the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the transmission resource of the NR-PBCH.
3. The method of indicating synchronization signal block time index of claim 2, wherein the first DMRS sequence is used to implicitly indicate that the synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is located.
4. The method of claim 2, wherein the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence are used to implicitly indicate one bit of information of the synchronization signal block time index corresponding to the NR-PBCH, respectively.
5. The method of indicating synchronization signal block time index of claim 2, wherein one of the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence is used to implicitly indicate that the synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located;
and the other two DMRS sequences in the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence are respectively used for implicitly indicating one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH.
6. The method of claim 2, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
7. The method of claim 2, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than a preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than a preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
8. The method of claim 1, wherein the step of dividing the transmission resources of the NR-PBCH into N groups comprises:
dividing the transmission resources of the NR-PBCH into a first set of transmission resources and a second set of transmission resources;
the step of configuring the DMRS sequences corresponding to the N groups of transmission resources includes:
configuring a first DMRS sequence corresponding to the first set of transmission resources and a second DMRS sequence corresponding to a second set of transmission resources, respectively;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second set of transmission resources is: and the first frequency domain resource is a frequency domain resource used for transmitting a new air interface main synchronization signal NR-PSS and/or a new air interface auxiliary synchronization signal NR-SSS which belong to the same synchronization signal block as the NR-PBCH.
9. The method of indicating synchronization signal block time index of claim 8, wherein the first DMRS sequence is used to implicitly indicate that the synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of the system frame in which the synchronization signal block is located.
10. The method of claim 8, wherein the second DMRS sequence is used to implicitly indicate M-bit information of the synchronization signal block time index corresponding to the NR-PBCH, and M is an integer greater than 0.
11. The method of claim 10, wherein the M-bit information is 2-bit information or 3-bit information.
12. The method of indicating synchronization signal block time index of claim 1, wherein different DMRS sequences have different preset parameters, wherein the preset parameters comprise: at least one of a sequence initialization value, a shift value, and a generator polynomial.
13. A network device, comprising:
a generating module, configured to generate a plurality of demodulation reference signal DMRS sequences, where the DMRS sequences are used to demodulate a new air interface physical broadcast channel NR-PBCH in a synchronization signal block;
a transmitting module, configured to transmit the plurality of DMRS sequences to a terminal, and indicate, through at least one of the DMRS sequences, a synchronization signal block time index corresponding to the NR-PBCH;
the generation module comprises:
a grouping submodule for dividing the transmission resources of the NR-PBCH into N groups;
the configuration submodule is used for configuring DMRS sequences corresponding to the N groups of transmission resources; the DMRS sequence implicitly indicates M-bit information of a synchronization signal block time index, N is an integer greater than 1, and M is an integer greater than 0.
14. The network device of claim 13, wherein the grouping submodule comprises:
a first grouping unit for dividing the transmission resources of the NR-PBCH into a first group of transmission resources, a second group of transmission resources, a third group of transmission resources, and a fourth group of transmission resources;
the configuration sub-module includes:
a first configuration unit, configured to configure a first DMRS sequence corresponding to a first group of transmission resources, a second DMRS sequence corresponding to a second group of transmission resources, a third DMRS sequence corresponding to a third group of transmission resources, and a fourth DMRS sequence corresponding to a fourth group of transmission resources, respectively;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on a preset time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second, third, and fourth sets of transmission resources are: the first frequency domain resource is a frequency domain resource used for transmitting a new air interface primary synchronization signal NR-PSS and/or a new air interface secondary synchronization signal NR-SSS in the same synchronization signal block as the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the NR-PBCH transmission resource.
15. The network device of claim 14, wherein the first DMRS sequence is configured to implicitly indicate that a synchronization signal block to which the NR-PBCH belongs is located 5ms before or 5ms after a system frame in which the synchronization signal block is located.
16. The network device of claim 14, wherein the second, third, and fourth DMRS sequences are each configured to implicitly indicate a bit of information for a synchronization signal block time index to which the NR-PBCH corresponds.
17. The network device of claim 14, wherein one of the second, third, and fourth DMRS sequences is configured to implicitly indicate that a synchronization signal block is located 5ms before or 5ms after a system frame in which the synchronization signal block is located;
and the other two DMRS sequences in the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence are respectively used for implicitly indicating one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH.
18. The network device of claim 14, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
19. The network device of claim 14, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than a preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than a preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
20. The network device of claim 13, wherein the grouping submodule comprises:
a second grouping unit for dividing the transmission resources of the NR-PBCH into a first group of transmission resources and a second group of transmission resources;
the configuration sub-module includes:
a second configuration unit, configured to configure a first DMRS sequence corresponding to the first group of transmission resources and a second DMRS sequence corresponding to a second group of transmission resources, respectively;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second set of transmission resources is: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS belonging to the same synchronization signal block as the NR-PBCH.
21. The network device of claim 20, wherein the first DMRS sequence is configured to implicitly indicate that a synchronization signal block to which the NR-PBCH belongs is located 5ms before or 5ms after a system frame in which the synchronization signal block is located.
22. The network device of claim 20, wherein the second DMRS sequence is configured to implicitly indicate M-bit information for a synchronization signal block time index corresponding to the NR-PBCH, and wherein M is an integer greater than 0.
23. The network device of claim 22, wherein the M-bit information is 2-bit information or 3-bit information.
24. The network device of claim 13, wherein different DMRS sequences have different preset parameters, the preset parameters comprising: at least one of a sequence initialization value, a shift value, and a generator polynomial.
25. A network device comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the method of indicating a synchronization signal block time index according to any one of claims 1 to 12 when executing the computer program.
26. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method for indicating a synchronization signal block time index according to any one of claims 1 to 12.
27. A method for detecting a time index of a synchronization signal block is applied to a terminal side, and is characterized by comprising the following steps:
receiving a plurality of DMRS sequences sent by network equipment, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel (NR-PBCH) in a synchronization signal block;
determining synchronization signal block time index information corresponding to the NR-PBCH according to at least one DMRS sequence;
the step of receiving a plurality of DMRS sequences transmitted by a network device includes:
receiving DMRS sequences which are sent by network equipment and correspond to N groups of transmission resources through N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH;
the step of determining the synchronization signal block time index information corresponding to the NR-PBCH according to at least one of the DMRS sequences includes:
and determining M-bit information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the DMRS sequence transmitted in at least one group of transmission resources, wherein N is an integer larger than 1, and M is an integer larger than 0.
28. The method of claim 27, wherein N is 4, and wherein the N sets of transmission resources comprise: a first set of transmission resources, a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources;
the step of receiving, by N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH, a DMRS sequence corresponding to the N groups of transmission resources sent by a network device includes:
receiving a first DMRS sequence transmitted by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources; receiving a third DMRS sequence sent by the network device through a third set of transmission resources; receiving a fourth DMRS sequence sent by the network equipment through a fourth group of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource;
the second, third and fourth sets of transmission resources are: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS belonging to the same synchronization signal block as the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the NR-PBCH transmission resource.
29. The method of claim 28, wherein the step of receiving the first DMRS sequence transmitted by the network device over the first set of transmission resources is followed by the step of:
and determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
30. The method of claim 28, wherein the step of determining the M-bit information of the synchronization signal block time index corresponding to the NR-PBCH according to the DMRS sequence transmitted in at least one set of transmission resources comprises:
and respectively determining one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence.
31. The method of claim 28, wherein after the step of receiving the N sets of transmission resources obtained by dividing the transmission resources of the NR-PBCH, the DMRS sequences corresponding to the N sets of transmission resources and transmitted by the network device, the method further comprises:
determining that the synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located according to one of the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence;
and respectively determining one bit of information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the other two DMRS sequences in the second DMRS sequence, the third DMRS sequence and the fourth DMRS sequence.
32. The method of claim 28, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
33. The method of claim 28, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than a preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than a preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
34. The method of claim 27, wherein N is 2, and wherein the N sets of transmission resources comprise: a first set of transmission resources and a second set of transmission resources;
the step of receiving, by N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH, a DMRS sequence corresponding to the N groups of transmission resources sent by a network device includes:
receiving a first DMRS sequence transmitted by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second set of transmission resources is: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS belonging to the same synchronization signal block as the NR-PBCH.
35. The method of claim 34, wherein after the step of receiving the first DMRS sequence transmitted by the network device through the first set of transmission resources, the method further comprises:
and determining that the synchronization signal block to which the NR-PBCH belongs is positioned in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is positioned according to the first DMRS sequence.
36. The method of detecting synchronization signal block time index of claim 34, wherein after the step of receiving a second DMRS sequence transmitted by a network device over a second set of transmission resources, further comprising:
and determining M bit information of a synchronization signal block time index corresponding to the NR-PBCH according to the second DMRS sequence, wherein M is an integer larger than 0.
37. The method of claim 36, wherein the M-bit information is 2-bit information or 3-bit information.
38. The method of claim 27, wherein different DMRS sequences have different preset parameters, wherein the preset parameters comprise: at least one of a sequence initialization value, a shift value, and a generator polynomial.
39. The method of claim 27, wherein the step of receiving the N sets of transmission resources obtained by dividing the transmission resources of the NR-PBCH and the DMRS sequences corresponding to the N sets of transmission resources transmitted by the network device comprises:
receiving and detecting a demodulation reference signal (DMRS) sequence of a new air interface physical broadcast channel (NR-PBCH) sent by network equipment on N groups of transmission resources in a coherent detection mode; alternatively, the first and second electrodes may be,
and receiving and detecting a demodulation reference signal (DMRS) sequence of a new air interface physical broadcast channel (NR-PBCH) sent by the network equipment on the N groups of transmission resources by adopting a non-coherent detection mode.
40. The method for detecting the synchronization signal block time index according to claim 39, wherein the step of receiving and detecting the DMRS sequence of the new air interface physical broadcast channel NR-PBCH sent by the network device on the N sets of transmission resources by using a coherent detection method includes:
performing channel estimation on transmission resources corresponding to the NR-PSS or the NR-SSS to obtain a corresponding channel estimation result;
and according to the channel estimation result, carrying out coherent detection on a demodulation reference signal (DMRS) sequence of a new air interface physical broadcast channel (NR-PBCH) sent by the network equipment on the N groups of transmission resources.
41. The method for detecting the synchronization signal block time index according to claim 39, wherein the step of receiving and detecting the DMRS sequence of the new air interface physical broadcast channel NR-PBCH sent by the network device on the N sets of transmission resources by using a coherent detection method includes:
performing channel estimation on the transmission resources which correspond to the DMRS of the NR-PBCH and do not carry information on the N groups of transmission resources to obtain corresponding channel estimation results;
and carrying out coherent detection on the DMRS sequence of the NR-PBCH sent by the network equipment according to the channel estimation result.
42. The method for detecting the synchronization signal block time index according to claim 39, wherein the step of receiving and detecting the DMRS sequence of the new air interface physical broadcast channel NR-PBCH sent by the network device on the N sets of transmission resources by using a coherent detection method includes:
performing incoherent detection on the transmission resources which correspond to the DMRS of the NR-PBCH and carry information on the N groups of transmission resources to obtain a transmission sequence;
determining a channel estimation result of corresponding transmission resources according to the transmission sequence;
and carrying out coherent detection on the DMRS sequence of the NR-PBCH sent by the network equipment according to the channel estimation result.
43. A terminal, comprising:
the receiving module is used for receiving a plurality of DMRS sequences sent by network equipment, wherein the DMRS sequences are used for demodulating a new air interface physical broadcast channel (NR-PBCH) in a synchronization signal block;
a processing module, configured to determine, according to at least one of the DMRS sequences, synchronization signal block time index information corresponding to the NR-PBCH;
the receiving module includes:
the receiving submodule is used for receiving the DMRS sequences which are sent by the network equipment and correspond to the N groups of transmission resources through the N groups of transmission resources obtained by dividing the transmission resources of the NR-PBCH;
the processing module comprises:
and the processing submodule is used for determining M bit information of the time index of the synchronization signal block corresponding to the NR-PBCH according to the DMRS sequence transmitted in at least one group of transmission resources, wherein N is an integer larger than 1, and M is an integer larger than 0.
44. The terminal of claim 43, wherein N is 4, and wherein the N sets of transmission resources comprise: a first set of transmission resources, a second set of transmission resources, a third set of transmission resources, and a fourth set of transmission resources;
the receiving sub-module includes:
a first receiving unit, configured to receive a first DMRS sequence sent by a network device through a first set of transmission resources; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources; receiving a third DMRS sequence sent by the network device through a third set of transmission resources; receiving a fourth DMRS sequence sent by the network equipment through a fourth group of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are positioned on a preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource;
the second, third and fourth sets of transmission resources are: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS belonging to the same synchronization signal block as the NR-PBCH, and the preset time domain symbol is a first time domain symbol or a second time domain symbol occupied by the NR-PBCH transmission resource.
45. The terminal of claim 44, wherein the receiving submodule comprises:
and a first processing unit, configured to determine, according to the first DMRS sequence, that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located.
46. The terminal of claim 44, wherein the processing submodule comprises:
and a second processing unit, configured to determine, according to the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, one bit of information of a synchronization signal block time index corresponding to the NR-PBCH.
47. The terminal of claim 44, wherein the receiving sub-module further comprises:
a third processing unit, configured to determine, according to one of the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located;
and a fourth processing unit, configured to determine, according to two other DMRS sequences of the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, one bit of information of a synchronization signal block time index corresponding to the NR-PBCH.
48. The terminal of claim 44, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of the first frequency domain resources;
the fourth set of transmission resources is: and the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy the transmission resources of other frequency domain resources except the first frequency domain resource.
49. The terminal of claim 44, wherein the second set of transmission resources is: the NR-PBCH transmission resources are located on the preset time domain symbol and occupy the transmission resources of the first frequency domain resource;
the third set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources lower than a preset frequency;
the fourth set of transmission resources is: the NR-PBCH transmission resources are positioned on another time domain symbol except the preset time domain symbol and occupy frequency domain resources higher than a preset frequency; wherein the preset frequency is a center frequency of the transmission resource of the NR-PBCH.
50. The terminal of claim 43, wherein N is 2, and wherein the N sets of transmission resources comprise: a first set of transmission resources and a second set of transmission resources;
the receiving submodule comprises:
a second receiving unit, configured to receive, through the first group of transmission resources, a first DMRS sequence sent by the network device; receiving a second DMRS sequence transmitted by the network device through a second set of transmission resources;
wherein the first set of transmission resources is: the NR-PBCH transmission resources are located on at least one time domain symbol and occupy transmission resources of other frequency domain resources except the first frequency domain resource, and the second set of transmission resources is: the first frequency domain resource is a frequency domain resource used for transmitting NR-PSS and/or NR-SSS belonging to the same synchronization signal block as the NR-PBCH.
51. The terminal of claim 50, wherein the receiving sub-module further comprises:
and a fifth processing unit, configured to determine, according to the first DMRS sequence, that a synchronization signal block to which the NR-PBCH belongs is located in the first 5ms or the last 5ms of a system frame in which the synchronization signal block is located.
52. The terminal of claim 50, wherein the processing sub-module comprises:
and a sixth processing unit, configured to determine, according to the second DMRS sequence, the third DMRS sequence, and the fourth DMRS sequence, M-bit information of a synchronization signal block time index corresponding to the NR-PBCH, where M is an integer greater than 0.
53. The terminal of claim 52, wherein the M-bit information is 2-bit information or 3-bit information.
54. The terminal of claim 43, wherein different DMRS sequences have different preset parameters, and wherein the preset parameters comprise: at least one of a sequence initialization value, a shift value, and a generator polynomial.
55. The terminal of claim 43, wherein the receiving submodule comprises:
a second receiving unit, configured to receive and detect, on the N groups of transmission resources, a demodulation reference signal DMRS sequence of a new air interface physical broadcast channel NR-PBCH sent by the network device in a coherent detection manner; alternatively, the first and second electrodes may be,
and a third receiving unit, configured to receive and detect, on the N groups of transmission resources, a demodulation reference signal DMRS sequence of a new air interface physical broadcast channel NR-PBCH sent by the network device in a non-coherent detection manner.
56. The terminal of claim 55, wherein the second receiving unit comprises:
the first channel estimation subunit is used for carrying out channel estimation on the transmission resources corresponding to the NR-PSS or the NR-SSS to obtain a corresponding channel estimation result;
and the first detection subunit is configured to perform coherent detection on the demodulation reference signal DMRS sequence of the new air interface physical broadcast channel NR-PBCH sent by the network device on the N groups of transmission resources according to the channel estimation result.
57. The terminal of claim 55, wherein the second receiving unit comprises:
a second channel estimation subunit, configured to perform channel estimation on transmission resources, which correspond to the DMRS of the NR-PBCH and do not carry information, on the N groups of transmission resources, to obtain a corresponding channel estimation result;
and the second detection subunit is used for carrying out coherent detection on the DMRS sequence of the NR-PBCH sent by the network equipment according to the channel estimation result.
58. The terminal of claim 55, wherein the second receiving unit comprises:
a third detection subunit, configured to perform non-coherent detection on the transmission resources that correspond to the DMRS of the NR-PBCH and carry information on the N groups of transmission resources, to obtain a transmission sequence;
a third channel estimation subunit, configured to determine, according to the transmission sequence, a channel estimation result corresponding to the transmission resource;
and the fourth detection subunit is configured to perform coherent detection on the DMRS sequence of the NR-PBCH sent by the network device according to the channel estimation result.
59. A terminal, characterized in that the terminal comprises a processor, a memory and a computer program stored on the memory and operable on the processor, the processor implementing the steps in the method for detecting a synchronization signal block time index according to any one of claims 27 to 42 when executing the computer program.
60. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for detecting a synchronization signal block time index according to any one of claims 27 to 42.
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