CN108260181B

CN108260181B - Transmission method of synchronous access signal block, network side equipment and user terminal

Info

Publication number: CN108260181B
Application number: CN201611243970.XA
Authority: CN
Inventors: 李建军
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2016-12-29
Filing date: 2016-12-29
Publication date: 2020-08-11
Anticipated expiration: 2036-12-29
Also published as: CN108260181A; WO2018120833A1

Abstract

The invention discloses a transmission method of a synchronous access signal block, network side equipment and a user terminal, wherein the method comprises the following steps: acquiring a synchronous access signal set, wherein the synchronous access signal set comprises a plurality of synchronous access signal blocks, each synchronous access signal block comprises a PSS (power system stabilizer), a SSS (secondary synchronization signal) and a PBCH (physical broadcast channel) signal, each PBCH signal comprises an MIB (management information base), the MIB comprises sequence number information, and the sequence number information is used for indicating the sequence number of the synchronous access signal block where the MIB is located in the synchronous access signal set; and transmitting different synchronous access signal blocks in the synchronous access signal set on different time resources respectively by using different beams. Therefore, the user terminal can use the sequence number information of the synchronous access signal to carry out time synchronization. The embodiment of the invention can improve the accuracy of time synchronization.

Description

Transmission method of synchronous access signal block, network side equipment and user terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission method of a synchronization access signal block, a network side device, and a user terminal.

Background

The millimeter wave band (6-100GHz) is currently paid much attention due to the advantages of rich spectrum resources and wide transmission bandwidth, and has become a necessary technology for the standard of future communication systems (such as 5G). However, a significant disadvantage of millimeter wave technology is that the path loss is very large and, as the frequency is higher, the path loss is larger, which results in a small coverage area for a narrow beam in the millimeter wave band.

In the existing communication system, a base station repeatedly transmits the same synchronous access signal at different times by using different beams, and the different beams cover different areas, thereby realizing a broadcast function and expanding the coverage. However, in the current communication system, the synchronization access signals are only transmitted sequentially in time sequence, which results in poor accuracy of time synchronization of the user terminal.

Disclosure of Invention

The embodiment of the invention provides a transmission method of a synchronous access signal block, network side equipment and a user terminal, aiming at solving the problem of poor accuracy of time synchronization.

In a first aspect, an embodiment of the present invention provides a method for transmitting a synchronization access signal block, including:

acquiring a synchronous access Signal set, wherein the synchronous access Signal set comprises a plurality of synchronous access Signal blocks, each synchronous access Signal Block comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS) and a Physical Broadcast Channel (PBCH) Signal, each PBCH Signal comprises a Master Information Block (MIB), and the MIB comprises sequence number Information which is used for representing the sequence number of the synchronous access Signal Block where the MIB is located in the synchronous access Signal set;

and transmitting different synchronous access signal blocks in the synchronous access signal set on different time resources respectively by using different beams.

In a second aspect, an embodiment of the present invention provides a method for transmitting a synchronization access signal block, where the method includes:

searching different synchronous access signal blocks in a synchronous access signal set on different time resources, wherein each synchronous access signal block in the synchronous access signal set comprises a PSS (power system synchronization), a SSS (secondary synchronization signal) and a PBCH (physical broadcast channel) signal, each PBCH signal comprises an MIB (management information base), and the MIB comprises sequence number information which is used for indicating a sequence number of the synchronous access signal block where the MIB is located in the synchronous access signal set;

when a synchronous access signal block in the synchronous access signal set is searched, demodulating a PBCH signal in the searched synchronous access signal block to obtain an MIB;

and acquiring the sequence number information from the MIB obtained by demodulation, and using the sequence number information to carry out time synchronization.

In a third aspect, an embodiment of the present invention provides a network side device, including:

an obtaining module, configured to obtain a synchronization access signal set, where the synchronization access signal set includes multiple synchronization access signal blocks, each synchronization access signal block includes a PSS, a SSS, and a PBCH signal, each PBCH signal includes an MIB, where the MIB includes sequence number information, where the sequence number information is used to indicate a sequence number of a synchronization access signal block where the MIB is located in the synchronization access signal set;

a sending module, configured to send different synchronization access signal blocks in the synchronization access signal set on different time resources respectively by using different beams.

In a fourth aspect, an embodiment of the present invention provides a user terminal, including:

a searching module, configured to search a synchronization access signal block on a time resource, where the synchronization access signal block includes PSS, SSS, and PBCH signals, each PBCH signal includes a master information block MIB, and the MIB includes sequence number information used to indicate a sequence number in a synchronization access signal set of the synchronization access signal block where the MIB is located;

a demodulation module, configured to demodulate the PBCH signal to obtain an MIB;

and the synchronization module is used for performing time synchronization by using the sequence number information included in the MIB.

In this way, in the embodiment of the present invention, a synchronization access signal set is obtained, where the synchronization access signal set includes a plurality of synchronization access signal blocks, each synchronization access signal block includes a PSS, a SSS, and a PBCH signal, each PBCH signal includes an MIB, where the MIB includes sequence number information, where the sequence number information is used to indicate a sequence number of a synchronization access signal block where the MIB is located in the synchronization access signal set; and transmitting different synchronous access signal blocks in the synchronous access signal set on different time resources respectively by using different beams. Therefore, the user terminal can use the sequence number information of the synchronous access signal to carry out time synchronization, thereby improving the accuracy of time synchronization.

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 exercise.

Fig. 1 is a block diagram of a transmission system for synchronizing a set of access signals to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of a method for transmitting a synchronization access signal block according to a first embodiment of the present invention;

fig. 3 is a flowchart of a method for transmitting a synchronization access signal block according to a second embodiment of the present invention;

FIG. 4 is a diagram illustrating the transmission of synchronization access signal blocks according to a second embodiment of the present invention;

FIG. 5 is a second illustration of the transmission within a synchronization access signal block according to a second embodiment of the present invention;

FIG. 6 is a third illustration of the transmission within a synchronization access signal block according to a second embodiment of the present invention;

FIG. 7 is a fourth illustration of the transmission within the synchronization access signal block according to the second embodiment of the present invention;

FIG. 8 is a fifth exemplary illustration of the transmission within a synchronization access signal block according to the second embodiment of the present invention;

FIG. 9 is a sixth exemplary illustration of the transmission within a synchronization access signal block according to the second embodiment of the present invention;

fig. 10 is a flowchart of a transmission method of a synchronous access signal group according to a third embodiment of the present invention;

fig. 11 is one of the structural diagrams of a network side device according to a fourth embodiment of the present invention;

fig. 12 is a second block diagram of a network device according to a fourth embodiment of the present invention;

fig. 13 is one of the structural diagrams of a user terminal provided in a fifth embodiment of the present invention;

fig. 14 is a second block diagram of a ue according to a fifth embodiment of the present invention;

fig. 15 is a block diagram of a network side device according to a sixth embodiment of the present invention;

fig. 16 is a block diagram of a user terminal according to a seventh embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a structural diagram of a transmission system for synchronizing an access signal block, which is applicable to the embodiment of the present invention, and as shown in fig. 1, the transmission system includes a user terminal 11 and a network side device 12, where the user terminal 11 may be a ue (user equipment), for example: the terminal side Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that the specific type of the user terminal 11 is not limited in the embodiments of the present invention. The ue 11 may establish communication with the network-side device 12, where the network in the figure may indicate that the ue 11 wirelessly establishes communication with the network-side device 12, and the network-side device 12 may be a Transmission Reception Point (TRP) or a base station, and the base station may be a macro station, such as an LTE eNB, a 5G NR NB, or the like. Or the network side device 12 may be an Access Point (AP).

It should be noted that, in the embodiment of the present invention, the specific type of the network-side device 12 is not limited, and the specific functions of the user terminal 11 and the network-side device 12 will be described in detail through a plurality of embodiments below.

First embodiment

Referring to fig. 2, fig. 2 is a flowchart of a method for transmitting a synchronization access signal block according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:

step 201, obtaining a synchronization access signal set, where the synchronization access signal set includes a plurality of synchronization access signal blocks, each synchronization access signal block includes a PSS, a SSS, and a PBCH signal, each PBCH signal includes an MIB, where the MIB includes sequence number information, where the sequence number information is used to indicate a sequence number of a synchronization access signal block where the MIB is located in the synchronization access signal set.

In this embodiment of the present invention, the number of synchronization access signal blocks (ssblocks) included in the synchronization access signal set (SS burst) may be less than or equal to the number of subframes included in one frame, and may also be greater than the number of subframes included in one frame; or may be less than or equal to the number of slots (slots) included in one frame, and may also be greater than the number of slots, which is not limited in this embodiment of the present invention.

In addition, in this embodiment of the present invention, each synchronization access signal block in step 201 may be understood as any synchronization access signal block in the synchronization access signal set, that is, in this embodiment of the present invention, any synchronization access signal block includes a PSS, a SSS, and a PBCH signal, each PBCH signal includes a MIB, and the MIB in each synchronization access signal block includes a sequence number of the synchronization access signal block in the synchronization access signal set.

The synchronization access signal acquisition set may be generated by a network side device, or may be received by the network side device and sent by another device, which is not limited in the embodiment of the present invention.

Step 202, using different beams, respectively transmitting different synchronization access signal blocks in the synchronization access signal set on different time resources.

The step 202 of transmitting different synchronization access signal blocks in the synchronization access signal set on different time resources using different beams may be that different synchronization access signal blocks are transmitted on different time resources using different beams.

For example: the synchronization access signal set comprises synchronization access signal blocks with sequence numbers of 1, 2, 3, 4 and 5 respectively, and the network side device comprises beams with sequence numbers of 1, 2, 3, 4 and 5 respectively. Step 202 may thus be to transmit synchronization access signal block 1 using beam 1 on time resource 1 and synchronization access signal block 2 using beam 2 on time resource 2, not listed here. Therefore, different synchronous access signal blocks can be transmitted by using different beams, and the coverage area of the network side equipment can be improved. In addition, different synchronous access signal blocks are sent by using different time resources, so that the user terminal can conveniently carry out time synchronization, and the time synchronization accuracy is improved.

In addition, in the embodiment of the present invention, the synchronous access signal may also be referred to as an initial access signal, that is, the synchronous access signal block may also be referred to as an initial access signal block, and the synchronous access signal set may also be referred to as an initial access signal set.

It should be noted that the beam used in the embodiment of the present invention may be a narrow beam in the millimeter wave band. In addition, the embodiment of the present invention may be applied to a large-scale Multiple-Input Multiple-output (MIMO) System, a Global System for mobile communication (GSM) application scenario in the millimeter wave band, and a Code Division Multiple Access (CDMA) application scenario in the millimeter wave band. In the embodiment of the present invention in the GSM or CDMA scenario, different subcarriers may also use different beams to respectively transmit the multiple synchronous access signal blocks on different time resources, thereby implementing beam scanning to expand the coverage of the cell.

The above method may be applied to a network side device in the network structure shown in fig. 1.

Second embodiment

Referring to fig. 3, fig. 3 is a flowchart of another method for transmitting a synchronization access signal block according to an embodiment of the present invention, as shown in fig. 3, including the following steps:

step 301, generating a synchronization access signal set, where the synchronization access signal set includes a plurality of synchronization access signal blocks, each synchronization access signal block includes a PSS, a SSS, and a PBCH signal, each PBCH signal includes a MIB, where the MIB includes sequence number information, where the sequence number information is used to indicate a sequence number of a synchronization access signal block where the MIB is located in the synchronization access signal set.

For the synchronization access signal set, reference may be made to corresponding descriptions in the first embodiment, which are not described herein again, and the same beneficial effects may be achieved.

It should be noted that, the step 301 generates the synchronization access signal set, which is optional in this embodiment, that is to say, the generation of the synchronization access signal set is a limitation on acquiring the synchronization access signal set, so in this embodiment, the step 301 may acquire the synchronization access signal set including a plurality of synchronization access signal blocks.

Step 302, using different beams, respectively transmitting different synchronization access signal blocks in the synchronization access signal set on different time resources.

The sending in step 302 may refer to corresponding descriptions in the first embodiment, which are not described herein again, and the same beneficial effects may be achieved.

As an optional implementation manner, in an embodiment of the present invention, the sending different synchronization access signal blocks in the synchronization access signal set on different time resources respectively includes:

and respectively sending PSS, SSS and PBCH signals included in the synchronous access signal block corresponding to the time resource through preset positions in the time resources.

The preset position may be a preset Orthogonal Frequency Division Multiplexing (OFDM) symbol.

Since the PSS, SSS, and PBCH signals are sent using preset locations, the user terminal may acquire the PSS, SSS, and PBCH signals using preset locations in advance, and search for the PSS, SSS, and PBCH signals included in the synchronization access signal block corresponding to the time resource at the preset locations in each time resource, respectively. For example: the OFDM symbols are preset, so that when the synchronization access signal block is received, a preset position used by at least one of PSS, SSS and PBCH can be directly used for time synchronization, so as to improve the accuracy and performance of time synchronization, for example: when the preset position is a preset OFDM symbol, the synchronization of the OFDM symbol can be realized, so that the accuracy and the performance of time synchronization are further improved. For example: the user terminal can synchronize the sequence number information of the access signal block and the position of at least one of the PSS, the SSS and the PBCH, and perform time synchronization and time synchronization. That is, by the sequence number information, the synchronization of the time resources within the frame can be achieved, and the synchronization of the symbols within the time resources can be determined by the position of the OFDM symbol used by at least one of the PSS, the SSS, and the PBCH.

The preset position may be configured in advance for the user terminal by the network side device, or negotiated in advance between the user terminal and the network side device, or predefined in a protocol, and the like, which is not limited in this embodiment of the present invention.

Optionally, in the foregoing embodiment, the sending, through the preset position in each time resource, the PSS, SSS, and PBCH signals included in the synchronization access signal block corresponding to the time resource includes:

sending a PSS and an SSS included in a synchronous access signal block corresponding to each time resource twice through a starting position and an ending position in each time resource; and sending the PBCH signals included in the synchronous access signal blocks corresponding to the time resources through the middle positions in the time resources.

Thus, the PSS and the SSS can be transmitted at the starting position and the ending position in the time resources, and are transmitted twice, so that the user terminal can search the PSS and the SSS which are included in the synchronous access signal block corresponding to the time resources at the starting position and the ending position in each time resource; and searching the PBCH signal included in the synchronous access signal block corresponding to the time resource at the middle position in each time resource, and then accurately determining the starting position and the ending position of the time resource so as to realize accurate synchronization. In addition, the PBCH signal may be transmitted using one or more OFDM symbols between the start and end positions.

Optionally, in this embodiment, the sending, twice through the starting position and the ending position in each time resource, the PSS and the SSS included in the synchronous access signal block corresponding to the time resource includes:

repeatedly transmitting PSS included in a synchronous access signal block corresponding to each time resource through a first OFDM symbol and a second last OFDM symbol in each time resource; repeatedly sending SSS included in a synchronous access signal block corresponding to each time resource through a second OFDM symbol and a last OFDM symbol in each time resource;

alternatively, the first and second electrodes may be,

repeatedly sending SSS included in a synchronous access signal block corresponding to each time resource through a first OFDM symbol and a second last OFDM symbol in each time resource; and repeatedly transmitting the PSS included in the synchronous access signal block corresponding to the time resource through a second OFDM symbol and a last OFDM symbol in each time resource.

In this embodiment, the PSS and the SSS are transmitted through the first and second OFDM symbols and the last and second last OFDM symbols, so that the user terminal can search for the PSS included in the synchronization access signal block corresponding to each time resource through the first OFDM symbol and the second last OFDM symbol in each time resource; searching SSS included in a synchronous access signal block corresponding to each time resource in a second OFDM symbol and a last OFDM symbol in each time resource; or searching SSS included in a synchronous access signal block corresponding to each time resource in a first OFDM symbol and a second last OFDM symbol in each time resource; and searching PSS included in the synchronous access signal block corresponding to each time resource in the second OFDM symbol and the last OFDM symbol in each time resource. The user terminal can realize OFDM synchronization in time after searching the PSS and the SSS so as to solve the problem of time ambiguity in one subframe.

and transmitting a first synchronous access signal block in the synchronous access signal set at a preset initial transmission time.

Since the first synchronization access signal block in the synchronization access signal set is transmitted at the preset initial transmission time, the user terminal can search the first synchronization access signal block in the synchronization access signal set at the preset initial transmission time. When the MIB includes the sequence number information acquired by the ue, the sequence number information and the initial transmission time may be used to perform time synchronization, so as to accurately determine the time resource of each synchronization access signal block, thereby improving the accuracy of time synchronization.

In addition, it should be noted that, since the first synchronization access signal block in the synchronization access signal set is sent at the preset initial sending time, the precious signaling overhead of the MIB can be greatly reduced. The overall performance of the system is improved.

Optionally, in this embodiment, when the time resource is a subframe, the initial transmission time is a preset subframe in a frame; and when the time resource is a slot, the initial sending time is a preset slot in a frame.

The preset subframe may be preset at a position in the frame, for example: the network side device presets and informs the user terminal, or the network side device and the user terminal negotiate in advance, or the protocol presets, such as a first subframe in a frame, a second subframe in a frame, or a last subframe in a frame. Therefore, the user terminal can determine the position of each subframe in the frame through the MIB so as to improve the accuracy of the synchronization time.

Similarly, the preset slot may be preset in the frame, for example: the network side device presets and tells the user terminal, or the network side device and the user terminal negotiate in advance, or the protocol presets, such as the first slot in the frame, the second slot in the frame, or the last slot in the frame. Therefore, the user terminal can determine the position of the received synchronous access signal block slot in the frame through the MIB so as to improve the accuracy of the synchronous time.

Preferentially, when the time resource is a subframe, the initial transmission time is the first subframe in a frame; and when the time resource is a slot, the initial sending time is the first slot in a frame or the slot in the first subframe in the frame.

Because the initial transmission time is the first subframe in the frame, or the initial transmission time is the first slot in the frame or the slot in the first subframe in the frame, the user terminal can conveniently and quickly perform time synchronization when acquiring the sequence number information in the MIB, so as to improve the efficiency of time synchronization.

It should be noted that, in the embodiment of the present invention, the above-provided implementation manner that the first synchronization access signal block in the synchronization access signal set is sent at the preset initial sending time, and the above-provided implementation manner that the PSS, the SSS, and the PBCH signals included in the synchronization access signal block corresponding to the time resource are sent respectively through the preset positions in each time resource may be implemented by combining the two implementation manners.

For example: for example, the initial transmission time is the first subframe in the frame, and the transmission of the synchronization access signal set (SSburst) may be as shown in fig. 4, where the first synchronization access signal of the synchronization access signal set is transmitted using the first subframe, and a sequence number of a synchronization access signal block (SS block) transmitted by the subframe is 1. And fig. 4 shows a transmission schematic in a synchronous access signal block, as shown in fig. 4, a first OFDM symbol in a subframe transmits a PSS, a second OFDM symbol transmits an SSS, third to ninth OFDM symbols transmit data (data), tenth to twelfth transmit a PBCH signal, the second last OFDM symbol transmits a PSS, and the last symbol transmits an SSS. Of course, fig. 4 is only an illustration of one synchronization access signal block, and the same embodiment can be applied to the remaining synchronization access signal blocks. The information fields of the MIB can then be shown in table 1:

table 1:

the synchronization access signal set index may be sequence number information of a synchronization access signal block.

Therefore, after the user terminal receives the MIB information, the current frame number information can be obtained through the system frame number, and the synchronization of the frame level is realized. And the sequence number (subframe index) of the current subframe in the frame can be obtained by the following calculation:

subframe index＝mod(SS block index,10)

that is, the remainder of dividing the synchronization access signal set index by 10 is the sequence number of the current subframe, so as to realize the synchronization of the subframe level. And the synchronization of the OFDM symbols in the subframe can be determined by the fixed OFDM symbol position used by at least one of the PSS, SSS and PBCH signals through the implementation mode that the PSS, SSS and PBCH signals are sent by using the preset OFDM symbols, thereby realizing the synchronization of the OFDM symbols at the level and further realizing the accurate synchronization at the user terminal.

For example: for example, the initial transmission time is the first slot in the frame, the transmission of the synchronous access signal set may be as shown in fig. 5, the initial transmission time of the synchronous access signal set is the first slot, and the sequence number of the synchronous access signal block transmitted by the slot is 1. And slots 0-11 transmit sync access signal blocks and slots 12-19 transmit data within one frame. And fig. 5 shows a transmission schematic in a synchronous access signal block, as shown in fig. 5, a first OFDM symbol in a slot transmits a PSS, a second OFDM symbol transmits a SSS, third to fifth transmit PBCH signals, a second to last OFDM symbol transmits a PSS, and a last symbol transmits a SSS. Of course, fig. 5 is only an illustration of one synchronization access signal block, and the same embodiment can be applied to the remaining synchronization access signal blocks. The information fields of the MIB can then be shown in table 2:

table 2:

thus, after receiving MIB information, the user terminal can obtain the current Frame Number information through the system Frame Number (system Frame Number), and realize the synchronization of the Frame level. And the slot number (slot index) of the current slot in the frame can be obtained by the following calculation:

slot index＝mod(SS block index,20)

that is, the remainder of dividing the synchronization access signal set index (SS block index) by 20 is the sequence number of the current slot, so as to implement synchronization at the slot level. And according to the relationship between the subframe and the slot, the sequence number of the current subframe can be obtained in the following way:

subframe index＝slot Index/2

to achieve synchronization at the sub-frame level. In addition, the synchronization of the OFDM symbols in the slots can be determined by the fixed OFDM symbol position used by at least one of the PSS, SSS and PBCH signals through the implementation mode that the PSS, SSS and PBCH signals provided above are sent using the preset OFDM symbols, thereby realizing the synchronization of the OFDM symbols at this level and further realizing the accurate synchronization at the user terminal.

sending a synchronous access signal block corresponding to the subframe through a preset slot in the subframe;

the method further comprises the following steps: and transmitting data through other slots in the subframe.

Therefore, each subframe can be time-synchronized only by using the preset slot, and the user terminal searches the synchronous access signal block corresponding to the subframe in the preset slot in the subframe when other slots transmit data; and receiving data in other slots within the subframe. Therefore, the OFDM symbols of the transmission data and the synchronous access signal block are continuous, and the user terminal does not need to switch frequently between the reception data and the synchronous access signal block during receiving, thereby reducing the complexity of sending and receiving and improving the performance of the user terminal.

Optionally, in this embodiment, the preset slot in the subframe is a first slot or a second slot in the subframe.

Similarly, the embodiment can be implemented by combining with the above embodiments, so that the user terminal can perform more accurate time synchronization to improve the time synchronization performance.

For example: taking the initial transmission time in the synchronization access signal set as the first subframe in the frame as an example, the transmission of the synchronization access signal set may be as shown in fig. 6, where a first synchronization access signal block of the synchronization access signal set is transmitted as the second slot of the first subframe, and the sequence number of the synchronization access signal block transmitted in the slot is 1. And fig. 6 shows a transmission schematic in the synchronous access signal block, as shown in fig. 6, a first slot in a subframe transmits data, a first OFDM symbol in a second slot transmits PSS, a second OFDM symbol transmits SSS, third to fifth transmit PBCH signals, a second to last OFDM symbol transmits PSS, and a last symbol transmits SSS. Of course, fig. 6 is only an illustration of one synchronization access signal block, and the same embodiment can be applied to the remaining synchronization access signal blocks. The information fields of the MIB can then be shown in table 3:

table 3:

thus, after receiving MIB information, the user terminal can obtain the current Frame Number information through the system Frame Number (system Frame Number), and realize the synchronization of the Frame level. And the sequence number of the current subframe in the frame can be obtained by the following calculation:

subframe index＝mod(SS block index,10)

that is, the remainder of dividing the SS block index by 10 is the sequence number of the current subframe, so as to achieve synchronization at the subframe level. The slot sequence number can be obtained through a subframe sequence number, because the slot for transmitting the synchronous access signal block is a preset position slot in the subframe, for example: the preset slot is the second slot in the subframe, and the sequence number of the current subframe calculated by the user terminal is 1, then it can be determined that the sequence number of the current slot is 1 (the sequence number of the first slot is 0). In addition, the synchronization of the OFDM symbols in the slots can be determined by the fixed OFDM symbol position used by at least one of the PSS, SSS and PBCH signals through the implementation mode that the PSS, SSS and PBCH signals provided above are sent using the preset OFDM symbols, thereby realizing the synchronization of the OFDM symbols at this level and further realizing the accurate synchronization at the user terminal.

Another example is: taking the example that the first synchronization access signal block in the synchronization access signal set is sent at any position in the frame, the MIB includes the sequence number information of the synchronization access signal block in the synchronization access signal set. As shown in fig. 7, the first synchronization access signal block of the synchronization access signal set is transmitted for the second slot of the ninth subframe of the frame, and the structure of the synchronization access signal block may adopt the structure shown in fig. 6. The information fields of the MIB can then be shown in table 4:

table 4:

the initial transmission subframe index in the synchronization access signal set may be understood as position information of an initial transmission subframe in the synchronization access signal set, that is, position information of a subframe used by a first synchronization access signal block in the synchronization access signal set.

After receiving the MIB information, the mobile ue can obtain the current Frame Number information through the system Frame Number (system Frame Number) r, thereby implementing the synchronization of the Frame level. And the sequence number of the current subframe in the frame can be obtained by the following calculation:

subframe index＝mod(SS block index+SS Burst starting subframe index,10)

that is, the remainder of the synchronization access signal set index (SS block index) plus the original transmitted subframe index (SS Burst starting subframe index) in the synchronization access signal set divided by 10 is the sequence number of the current subframe, so as to achieve synchronization at the subframe level. The slot sequence number can be obtained through a subframe sequence number, because the slot for transmitting the synchronous access signal block is a preset position slot in the subframe, for example: the preset slot is the second slot in the subframe, and the sequence number of the current subframe calculated by the user terminal is 1, then it can be determined that the sequence number of the current slot is 1 (the sequence number of the first slot is 0). In addition, the synchronization of the OFDM symbols in the slots can be determined by the fixed OFDM symbol position used by at least one of the PSS, SSS and PBCH signals through the implementation mode that the PSS, SSS and PBCH signals provided above are sent using the preset OFDM symbols, thereby realizing the synchronization of the OFDM symbols at this level and further realizing the accurate synchronization at the user terminal.

As an optional implementation, the MIB includes location information of a time resource used for transmitting a first synchronization access signal block in the synchronization access signal set.

In this embodiment, since the MIB includes location information of a time resource used for transmitting a first synchronization access signal block in the synchronization access signal set, the ue can perform time synchronization using sequence number information included in the MIB and the location information, so as to improve accuracy of time synchronization. And the time resource of the first synchronization access signal block can be any position, thus increasing the flexibility of time synchronization.

Preferably, the location information of the time resource used for sending the first synchronization access signal block in the synchronization access signal set is specifically a sequence number of a subframe or slot in the subframe used for sending the first synchronization access signal block in the synchronization access signal set.

In this embodiment, the location information is a sequence number of a subframe or a slot in a frame, which is convenient for a user terminal to calculate the sequence number of the subframe or the slot receiving the synchronization access signal block, so as to conveniently and quickly implement time synchronization.

It should be noted that, in the embodiment of the present invention, the MIB is provided to include an implementation manner of transmitting location information of a time resource of a first synchronization access signal block in the synchronization access signal set, and the MIB is provided to transmit PSS, SSS, and PBCH signals included in the synchronization access signal block corresponding to the time resource through preset locations in the respective time resources, which may be implemented by combining the two implementation manners.

For example: taking the example that the first synchronization access signal block in the synchronization access signal set is sent at any position in the frame, that is, the MIB includes the sequence number information of the corresponding synchronization access signal block in the synchronization access signal set. As shown in fig. 8, the first synchronization access signal block of the synchronization access signal set is transmitted for the subframe 9 in one frame, and the structure of the synchronization access signal block may adopt the structure shown in fig. 4. The information fields of the MIB are then shown in table 5:

table 5:

Thus, after the user terminal receives the MIB information, the current Frame Number information can be obtained through the system Frame Number (system Frame Number). Synchronization at the frame level is achieved. And the sequence number of the current subframe in the frame can be obtained by the following calculation:

subframe index＝mod(SS block index+SS Burst starting subframe index,10)

that is, the remainder of the synchronization access signal set index (SS block index) plus the original transmitted subframe index (SS Burst starting subframe index) in the synchronization access signal set divided by 10 is the sequence number of the current subframe. The synchronization of the OFDM symbols in the subframe can be determined by the preset OFDM symbol position used by at least one of PSS, SSS and PBCH signals, thereby realizing the synchronization of the OFDM symbols at the level and further realizing accurate synchronization at a user terminal.

Another example is: taking an arbitrary position of a first synchronization access signal block in a synchronization access signal set in a frame as an example, the MIB includes sequence number information of the synchronization access signal block in the synchronization access signal set. As shown in fig. 9, the initial transmission slot of the synchronization access signal set is slot18 in one frame, and the structure of the synchronization access signal block may adopt the structure shown in fig. 5. The information fields of the MIB are then shown in table 5:

table 5:

the initial transmission slot index in the synchronous access signal set may be understood as location information of an initial transmission slot in the synchronous access signal set in a frame, that is, location information of a slot used by a first synchronous access signal block of the synchronous access signal set.

Thus, after receiving MIB information, the user terminal can obtain the current Frame Number information through the system Frame Number (system Frame Number), and realize the synchronization of the Frame level. And the sequence number of the current slot in the frame can be obtained by the following calculation:

slot index＝mod(SS block index+SS Burst starting slot index,20)

that is, the remainder obtained by dividing the synchronization access signal set index (SS block index) plus the initial transmission slot index (SS Burst starting slot index) in the synchronization access signal set by 20 is the sequence number of the current slot, so as to implement synchronization of the slot stage.

And according to the relationship between the subframe and the slot, the sequence number of the current subframe can be obtained in the following way:

subframe index＝slot Index/2

to achieve synchronization at the sub-frame level. And the synchronization of the OFDM symbols in the slots can be determined by the preset OFDM symbol position used by at least one of PSS, SSS and PBCH signals, thereby realizing the synchronization of the OFDM symbols at the level and further realizing accurate synchronization at a user terminal.

Third embodiment

Referring to fig. 10, fig. 10 is a flowchart of another method for transmitting a synchronization access signal block according to an embodiment of the present invention, as shown in fig. 10, including the following steps:

step 1001, searching different synchronous access signal blocks in a synchronous access signal set on different time resources, where each synchronous access signal block in the synchronous access signal set includes a PSS, an SSS, and a PBCH signal, each PBCH signal includes a master information block MIB, where the MIB includes sequence number information, and the sequence number information is used to indicate a sequence number in the synchronous access signal set of the synchronous access signal block where the MIB is located.

Step 1001 may be that the ue searches for different synchronization access signal blocks in multiple time resources, and when a PSS or an SSS in a synchronization access signal block is searched, it is determined that the synchronization access signal block is transmitted on the time resource, and then other information of the synchronization access signal block is acquired on the time resource, for example: the PBCH signal. In addition, in this embodiment, the synchronization access signal block may refer to the corresponding descriptions of the first embodiment and the second embodiment, which are not described herein again, and the same beneficial effects may be achieved.

Step 1002, when the synchronous access signal block in the synchronous access signal set is searched, demodulating the PBCH signal in the searched synchronous access signal block to obtain the MIB.

For MIB, refer to corresponding descriptions in the first embodiment and the second embodiment, which are not described herein again and can achieve the same beneficial effects.

Step 1003, acquiring the sequence number information from the MIB obtained by demodulation, and performing time synchronization by using the sequence number information.

For time synchronization, reference may be made to corresponding descriptions of the first embodiment and the second embodiment, which are not described herein again and can achieve the same beneficial effects.

Optionally, the searching for different synchronization access signal blocks in the synchronization access signal set on different time resources includes:

respectively searching PSS, SSS and PBCH signals included in a synchronous access signal block corresponding to each time resource at a preset position in each time resource;

the time synchronization using the sequence number information includes:

performing time synchronization using the sequence number information and a location of at least one of the PSS, the SSS, and the PBCH.

For the position and the corresponding time synchronization of the PSS, the SSS, and the PBCH, reference may be made to the corresponding descriptions of the first embodiment and the second embodiment, which are not described herein again and may achieve the same beneficial effects.

Optionally, the searching, at the preset position in each time resource, for PSS, SSS, and PBCH signals included in a synchronization access signal block corresponding to the time resource includes:

searching a PSS and an SSS included in a synchronous access signal block corresponding to each time resource at a starting position and an ending position in each time resource; and searching PBCH signals included in the synchronous access signal block corresponding to each time resource at the middle position in each time resource.

For the positions of the PSS, the SSS, and the PBCH, reference may be made to corresponding descriptions in the first embodiment and the second embodiment, which are not described herein again and may achieve the same beneficial effects.

Optionally, the searching for the PSS and the SSS included in the synchronization access signal block corresponding to the time resource at the starting location and the ending location in each time resource includes:

searching PSS included in a synchronous access signal block corresponding to each time resource in a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second last OFDM symbol in each time resource; searching SSS included in a synchronous access signal block corresponding to each time resource in a second OFDM symbol and a last OFDM symbol in each time resource;

alternatively, the first and second electrodes may be,

searching SSS included in a synchronous access signal block corresponding to each time resource in a first OFDM symbol and a second last OFDM symbol in each time resource; and searching PSS included in the synchronous access signal block corresponding to each time resource in the second OFDM symbol and the last OFDM symbol in each time resource.

searching a first synchronous access signal block in the synchronous access signal set at a preset initial sending time;

the time synchronization using the sequence number information includes:

and performing time synchronization by using the sequence number information and the initial sending time.

For the initial sending time and the corresponding time synchronization, reference may be made to the corresponding descriptions of the first embodiment and the second embodiment, which are not described herein again, and the same beneficial effects may be achieved.

Optionally, when the time resource is a subframe, the initial transmission time is a preset subframe in a frame; and when the time resource is a slot, the initial sending time is a preset slot in a frame.

For time resources in this embodiment, reference may be made to corresponding descriptions in the first embodiment and the second embodiment, which are not described herein again, and the same beneficial effects may be achieved.

Optionally, when the time resource is a subframe, the initial transmission time is a first subframe in a frame; and when the time resource is a slot, the initial sending time is the first slot in a frame or the slot in the first subframe in the frame.

searching a synchronous access signal block corresponding to a subframe in a preset slot in the subframe;

the method further comprises the following steps:

receiving data at other slots within the subframe.

For the implementation, reference may be made to corresponding descriptions of the first embodiment and the second embodiment, which are not described herein again and may achieve the same beneficial effects.

Optionally, the preset slot in the subframe is a first slot or a second slot in the subframe.

Optionally, the MIB includes location information of a time resource used for transmitting a first synchronization access signal block in the synchronization access signal set;

the time synchronization using the sequence number information included in the MIB includes:

and performing time synchronization by using the sequence number information and the position information included in the MIB.

Optionally, the location information of the time resource used for sending the first synchronization access signal block in the synchronization access signal set is specifically a sequence number of a subframe or slot in the frame used for sending the first synchronization access signal block in the synchronization access signal set.

In the embodiment of the invention, different synchronous access signal blocks in a synchronous access signal set are searched on different time resources, each synchronous access signal block in the synchronous access signal set comprises a PSS, a SSS and a PBCH signal, each PBCH signal comprises a master information block MIB, the MIB comprises sequence number information, and the sequence number information is used for representing the sequence number of the synchronous access signal block where the MIB is located in the synchronous access signal set; when a synchronous access signal block in the synchronous access signal set is searched, demodulating a PBCH signal in the searched synchronous access signal block to obtain an MIB; and acquiring the sequence number information from the MIB obtained by demodulation, and using the sequence number information to carry out time synchronization. This can improve the accuracy of time synchronization.

Fourth embodiment

Referring to fig. 11, fig. 11 is a structural diagram of a network side device according to an embodiment of the present invention, which can implement details of the transmission method of the synchronization access signal block in the first embodiment to the second embodiment, and achieve the same effect. As shown in fig. 11, the network side device 1100 includes an obtaining module 1101 and a sending module 1102, where:

an obtaining module 1101, configured to obtain a synchronization access signal set, where the synchronization access signal set includes multiple synchronization access signal blocks, each synchronization access signal block includes a PSS, a SSS, and a PBCH signal, each PBCH signal includes an MIB, where the MIB includes sequence number information, where the sequence number information is used to indicate a sequence number of a synchronization access signal block where the MIB is located in the synchronization access signal set;

a sending module 1102, configured to send different synchronization access signal blocks in the synchronization access signal set on different time resources respectively using different beams.

Optionally, the sending module 1102 is specifically configured to send, through preset positions in each time resource, a PSS signal, an SSS signal, and a PBCH signal included in a synchronization access signal block corresponding to the time resource, respectively.

Optionally, the sending module 1102 is specifically configured to send, through a starting position and an ending position in each time resource, a PSS and an SSS included in a synchronization access signal block corresponding to the time resource twice; and sending the PBCH signals included in the synchronous access signal blocks corresponding to the time resources through the middle positions in the time resources.

Optionally, the sending module 1102 is specifically configured to repeatedly send, through a first OFDM symbol and a second last OFDM symbol in each time resource, a PSS included in a synchronization access signal block corresponding to the time resource; repeatedly sending SSS included in a synchronous access signal block corresponding to each time resource through a second OFDM symbol and a last OFDM symbol in each time resource;

alternatively, the first and second electrodes may be,

Optionally, the sending module 1102 is specifically configured to send, at a preset initial sending time, a first synchronization access signal block in the synchronization access signal set.

Optionally, when the time resource is a subframe, the initial transmission time is a preset subframe within a frame; and when the time resource is a slot, the initial sending time is a preset slot in a frame.

Optionally, the sending module 1102 is specifically configured to send, through a preset slot in a subframe, a synchronization access signal block corresponding to the subframe;

as shown in fig. 12, the network-side device further includes:

a data transmission module 1103, configured to transmit data through other slots in the subframe.

Optionally, the MIB includes location information of a time resource used for transmitting a first synchronization access signal block in the synchronization access signal set.

In the embodiment of the invention, a synchronous access signal set is obtained, wherein the synchronous access signal set comprises a plurality of synchronous access signal blocks, each synchronous access signal block comprises a PSS (power system synchronization), a SSS (secondary synchronization system) and a PBCH (physical broadcast channel) signal, each PBCH signal comprises an MIB (management information base), the MIB comprises sequence number information, and the sequence number information is used for indicating the sequence number of the synchronous access signal block where the MIB is located in the synchronous access signal set; and transmitting different synchronous access signal blocks in the synchronous access signal set on different time resources respectively by using different beams. Therefore, the user terminal can use the sequence number information of the synchronous access signal to carry out time synchronization, thereby improving the accuracy of time synchronization.

Furthermore, PSS, SSS and PBCH signals are sent through preset positions, and synchronization of OFDM symbols is achieved, so that accuracy and performance of time synchronization are further improved.

And a plurality of synchronous access signal blocks can be sent in different subframes to realize the synchronization of the subframes, so as to further improve the accuracy and the performance of time synchronization.

And a plurality of synchronous access signal blocks can be sent in different slots to realize slot synchronization so as to further improve the accuracy and performance of time synchronization, and because only the slots are used for transmitting the synchronous access signal blocks, the transmission time can be reduced so as to improve the communication efficiency and improve the overall performance of the system.

Here, the synchronous access signal block can be transmitted in one slot in the same subframe, and the data is transmitted in the other slot, so that the user terminal does not need to switch frequently between the received data and the synchronous access signal block during receiving, thereby reducing the complexity of sending and receiving and improving the performance of the user terminal.

Fifth embodiment

Referring to fig. 13, fig. 13 is a structural diagram of a user equipment according to an embodiment of the present invention, which can implement details of a transmission method of a synchronization access signal block in a third embodiment, and achieve the same effect. As shown in fig. 13, the user terminal 1300 includes: a search module 1301, a demodulation module 1302 and a synchronization module 1303, wherein:

a searching module 1301, configured to search different synchronization access signal blocks in a synchronization access signal set on different time resources, where each synchronization access signal block in the synchronization access signal set includes a number PSS, an SSS, and a PBCH signal, each PBCH signal includes a master information block MIB, and the MIB includes sequence number information used to indicate a sequence number of the synchronization access signal block where the MIB is located in the synchronization access signal set;

a demodulation module 1302, configured to demodulate, when a synchronous access signal block in the synchronous access signal set is searched, a PBCH signal in the searched synchronous access signal block to obtain an MIB;

and a synchronization module 1303, configured to obtain sequence number information from the MIB obtained by demodulation, and perform time synchronization using the sequence number information.

Optionally, the searching module 1301 is specifically configured to search, at a preset position in each time resource, a PSS signal, an SSS signal, and a PBCH signal included in a synchronization access signal block corresponding to the time resource, respectively;

the synchronization module 1303 is specifically configured to obtain sequence number information from the MIB obtained by demodulation, and perform time synchronization using the sequence number information and a position of at least one of the PSS, the SSS, and the PBCH.

Optionally, the searching module 1301 is specifically configured to search, at a starting position and an ending position in each time resource, a PSS and an SSS included in a synchronization access signal block corresponding to the time resource; and searching PBCH signals included in the synchronous access signal block corresponding to each time resource at the middle position in each time resource.

Optionally, the searching module 1301 is specifically configured to search for a PSS included in a synchronization access signal block corresponding to each time resource, in a first orthogonal frequency division multiplexing OFDM symbol and a second to last OFDM symbol in each time resource; searching SSS included in a synchronous access signal block corresponding to each time resource in a second OFDM symbol and a last OFDM symbol in each time resource;

alternatively, the first and second electrodes may be,

Optionally, the searching module 1301 is specifically configured to search a first synchronization access signal block in the synchronization access signal set at a preset initial sending time;

the synchronization module 1303 is specifically configured to obtain sequence number information from the MIB obtained by demodulation, and perform time synchronization using the sequence number information and the initial sending time.

Optionally, the searching module 1301 is specifically configured to search a synchronization access signal block corresponding to a subframe in a preset slot in the subframe;

as shown in fig. 14, the user terminal further includes:

a data receiving module 1304, configured to receive data in other slots in the subframe.

the synchronization module 1303 is specifically configured to perform time synchronization using the sequence number information and the location information.

And synchronous access signal blocks can be received in different subframes to realize the synchronization of the subframes, so as to further improve the accuracy and the performance of time synchronization.

And the synchronous access signal blocks can be received in different slots to realize slot synchronization so as to further improve the accuracy and the performance of time synchronization, and the transmission time can be reduced by only using the slots to transmit the synchronous access signal blocks so as to improve the communication efficiency and improve the overall performance of the system.

Here, the synchronous access signal block can be received in one slot in the same subframe, and data is transmitted in another slot, so that the user terminal does not need to switch frequently between the received data and the synchronous access signal block during receiving, thereby reducing the complexity of sending and receiving and improving the performance of the user terminal.

Sixth embodiment

Referring to fig. 15, fig. 15 is a structural diagram of a network side device applied in the embodiment of the present invention, which can implement details of the transmission method of the synchronous access signal block in the first embodiment to the second embodiment, and achieve the same effect. As shown in fig. 15, the network-side device 1500 includes: a processor 1501, a transceiver 1502, a memory 1503, a user interface 1504, and a bus interface, wherein:

the processor 1501, which is configured to read the program in the memory 1503, executes the following processes:

acquiring a synchronous access signal set, wherein the synchronous access signal set comprises a plurality of synchronous access signal blocks, each synchronous access signal block comprises a PSS (power system stabilizer), a SSS (secondary synchronization signal) and a PBCH (physical broadcast channel) signal, each PBCH signal comprises an MIB (management information base), the MIB comprises sequence number information, and the sequence number information is used for indicating the sequence number of the synchronous access signal block where the MIB is located in the synchronous access signal set;

Among other things, the transceiver 1502 is configured to receive and transmit data under the control of the processor 1501.

In fig. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1501, and various circuits, represented by memory 1503, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1502 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1504 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1501 is responsible for managing a bus architecture and general processing, and the memory 1503 may store data used by the processor 1501 in performing operations.

Optionally, the sending, by the processor 1501, different synchronization access signal blocks in the synchronization access signal set on different time resources respectively includes:

Optionally, the sending, by the processor 1501, the PSS, SSS, and PBCH signals included in the synchronization access signal block corresponding to the time resource through the preset position in each time resource includes:

Optionally, the sending, by the processor 1501, the PSS and the SSS included in the synchronous access signal block corresponding to the time resource twice through the starting position and the ending position in each time resource includes:

repeatedly sending a PSS (packet switching service) included in a synchronous access signal block corresponding to each time resource through a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second last OFDM symbol in each time resource; repeatedly sending SSS included in a synchronous access signal block corresponding to each time resource through a second OFDM symbol and a last OFDM symbol in each time resource;

alternatively, the first and second electrodes may be,

Optionally, the sending, by the processor 1501, different synchronization access signal blocks in the synchronization access signal set on different time resources respectively includes: sending a synchronous access signal block corresponding to the subframe through a preset slot in the subframe;

processor 1501 is also configured to:

and transmitting data through other slots in the subframe.

In this embodiment, a synchronization access signal set is obtained, where the synchronization access signal set includes a plurality of synchronization access signal blocks, each synchronization access signal block includes PSS, SSS, and PBCH signals, each PBCH signal includes MIB, where the MIB includes sequence number information used to indicate a sequence number of a synchronization access signal block in which the MIB is located in the synchronization access signal set; and transmitting different synchronous access signal blocks in the synchronous access signal set on different time resources respectively by using different beams. Therefore, the user terminal can use the sequence number information of the synchronous access signal to carry out time synchronization, thereby improving the accuracy of time synchronization.

Seventh embodiment

Referring to fig. 16, fig. 16 is a structural diagram of a user equipment applied in the embodiment of the present invention, which can implement details of the system information block transmission method in the first embodiment to the second embodiment, and achieve the same effect. As shown in fig. 16, the user terminal 1600 includes: at least one processor 1601, memory 1602, at least one network interface 1604, and a user interface 1603. The various components in user terminal 1600 are coupled together by a bus system 1605. It is understood that the bus system 1605 is used to enable connected communication between these components. The bus system 1605 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration the various buses are labeled in figure 16 as bus system 1605.

The user interface 1603 may include, among other things, a display, a keyboard or a pointing device (e.g., a mouse, track ball, touch pad or touch screen, etc.).

It is to be understood that the memory 1602 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 example, but 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 DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1602 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 1602 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 16021 and application programs 16022.

The operating system 16021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application 16022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the present invention may be included within application 16022.

In the embodiment of the present invention, the processor 1601 is configured to, by calling a program or an instruction stored in the memory 1602, specifically, a program or an instruction stored in the application 16022:

The method disclosed by the above-mentioned embodiments of the present invention may be applied to the processor 1601 or implemented by the processor 1601. The processor 1601 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the method may be performed by hardware integrated logic circuits or instructions in software form in the processor 1601. The Processor 1601 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 1602, and the processor 1601 reads information in the memory 1602, and performs 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 described herein, or a combination thereof.

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

Optionally, the searching for different synchronization access signal blocks in the synchronization access signal set on different time resources by the processor 1601 includes:

processor 1601 is configured to perform time synchronization using the sequence number information, including:

Optionally, the processor 1601 is configured to search for, at the preset position in each time resource, a PSS signal, an SSS signal, and a PBCH signal included in a synchronization access signal block corresponding to the time resource, respectively, where the search includes:

Optionally, the searching, by the processor 1601, for a PSS and an SSS included in a synchronous access signal block corresponding to each time resource at a starting position and an ending position in the time resource includes:

alternatively, the first and second electrodes may be,

processor 1601 is further configured to:

receiving data at other slots within the subframe.

the time synchronization performed by processor 1601 using the sequence number information included in the MIB includes:

In this embodiment, different synchronous access signal blocks in a synchronous access signal set are searched on different time resources, each synchronous access signal block in the synchronous access signal set includes a PSS, an SSS, and a PBCH signal, each PBCH signal includes a master information block MIB, which includes sequence number information used to indicate a sequence number of the synchronous access signal block in which the MIB is located in the synchronous access signal set; when a synchronous access signal block in the synchronous access signal set is searched, demodulating a PBCH signal in the searched synchronous access signal block to obtain an MIB; and acquiring the sequence number information from the MIB obtained by demodulation, and using the sequence number information to carry out time synchronization. This can improve the accuracy of time synchronization.

Furthermore, PSS, SSS and PBCH signals are sent through preset position symbols, and synchronization of OFDM symbols is achieved, so that accuracy and performance of time synchronization are further improved.

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 of the present invention.

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.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting a synchronization access signal block, comprising:

acquiring a synchronous access signal set, wherein the synchronous access signal set comprises a plurality of synchronous access signal blocks, each synchronous access signal block comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS) and a Physical Broadcast Channel (PBCH) signal, each PBCH signal comprises a primary information block (MIB), the MIB comprises sequence number information, and the sequence number information is used for indicating the sequence number of the synchronous access signal block where the MIB is located in the synchronous access signal set;

using different beams to respectively transmit different synchronous access signal blocks in the synchronous access signal set on different time resources;

wherein the sending different synchronization access signal blocks in the synchronization access signal set on different time resources respectively comprises:

sending a PSS and an SSS included in a synchronous access signal block corresponding to each time resource twice through a starting position and an ending position in each time resource; sending PBCH signals included in a synchronous access signal block corresponding to each time resource through the middle position in each time resource, wherein different time resources use different beams, and the same beam is used for sending the synchronous signal block in the same time resource;

the MIB includes location information of a time resource used to transmit a first synchronous access signal block in the set of synchronous access signals.

2. The method of claim 1, wherein the transmitting twice the PSS and the SSS included in the synchronization access signal block corresponding to the time resource through the starting location and the ending location within the respective time resource comprises:

alternatively, the first and second electrodes may be,

3. The method of claim 1, wherein the transmitting different synchronization access signal blocks in the synchronization access signal set on different time resources respectively comprises:

4. The method of claim 3, wherein when the time resource is a subframe, the initial transmission time is a preset subframe within a frame; and when the time resource is a slot, the initial sending time is a preset slot in a frame.

5. The method of claim 4, wherein when the time resource is a subframe, the initial transmission time is a first subframe in a frame; and when the time resource is a slot, the initial sending time is the first slot in a frame or the slot in the first subframe in the frame.

6. The method of claim 1, wherein the transmitting different synchronization access signal blocks in the synchronization access signal set on different time resources respectively comprises:

7. The method of claim 6, wherein the predetermined slot in the subframe is a first slot or a second slot in the subframe.

8. The method according to claim 1, wherein the location information of the time resource used for transmitting the first synchronization access signal block in the synchronization access signal set is, specifically, a sequence number of a subframe or slot in a frame used for transmitting the first synchronization access signal block in the synchronization access signal set.

9. A method for transmitting a synchronization access signal block, comprising:

searching different synchronous access signal blocks in a synchronous access signal set on different time resources, wherein each synchronous access signal block in the synchronous access signal set comprises a primary synchronous signal PSS, a secondary synchronous signal SSS and a physical broadcast channel PBCH signal, each PBCH signal comprises a primary information block MIB, and the MIB comprises sequence number information which is used for representing the sequence number of the synchronous access signal block in which the MIB is located in the synchronous access signal set;

acquiring sequence number information from the MIB obtained by demodulation, and performing time synchronization by using the sequence number information;

wherein the searching for different synchronization access signal blocks in the synchronization access signal set on different time resources comprises:

searching a PSS and an SSS included in a synchronous access signal block corresponding to each time resource at a starting position and an ending position in each time resource; searching PBCH signals included in a synchronous access signal block corresponding to each time resource at the middle position in each time resource;

the MIB comprises position information of time resources used for transmitting a first synchronous access signal block in the synchronous access signal set;

the time synchronization using the sequence number information includes:

performing time synchronization using the sequence number information and the location information, and a location of at least one of the PSS, the SSS, and the PBCH.

10. The method of claim 9, wherein the searching for the PSS and SSS included in the synchronization access signal block corresponding to the time resource at the starting location and the ending location within the respective time resource comprises:

alternatively, the first and second electrodes may be,

11. The method of claim 9, wherein searching different time resources for different blocks of synchronization access signals in a set of synchronization access signals comprises:

the time synchronization using the sequence number information includes:

12. The method of claim 11, wherein the initial transmission time is a predetermined subframe within a frame when the time resource is a subframe; and when the time resource is a slot, the initial sending time is a preset slot in a frame.

13. The method of claim 12, wherein when the time resource is a subframe, the initial transmission time is a first subframe in a frame; and when the time resource is a slot, the initial sending time is the first slot in a frame or the slot in the first subframe in the frame.

14. The method of claim 9, wherein searching different time resources for different blocks of synchronization access signals in a set of synchronization access signals comprises:

the method further comprises the following steps:

receiving data at other slots within the subframe.

15. The method of claim 14, wherein the predetermined slot in the subframe is a first slot or a second slot in the subframe.

16. The method according to claim 9, wherein the location information of the time resource used for transmitting the first synchronization access signal block in the synchronization access signal set is, specifically, a sequence number of a subframe or slot in a frame used for transmitting the first synchronization access signal block in the synchronization access signal set.

17. A network-side device, comprising:

an obtaining module, configured to obtain a synchronization access signal set, where the synchronization access signal set includes multiple synchronization access signal blocks, each synchronization access signal block includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH signal, each PBCH signal includes a primary information block MIB, where the MIB includes sequence number information, and the sequence number information is used to indicate a sequence number of a synchronization access signal block where the MIB is located in the synchronization access signal set;

a sending module, configured to send different synchronization access signal blocks in the synchronization access signal set on different time resources respectively by using different beams;

the sending module is specifically configured to send, through a starting position and an ending position in each time resource, a PSS and an SSS included in a synchronization access signal block corresponding to the time resource twice; sending PBCH signals included in a synchronous access signal block corresponding to each time resource through the middle position in each time resource, wherein different time resources use different beams, and the same beam is used for sending the synchronous signal block in the same time resource;

18. The network-side device of claim 17,

the transmitting module is specifically configured to repeatedly transmit a PSS included in a synchronization access signal block corresponding to each time resource through a first orthogonal frequency division multiplexing OFDM symbol and a second last OFDM symbol in each time resource; repeatedly sending SSS included in a synchronous access signal block corresponding to each time resource through a second OFDM symbol and a last OFDM symbol in each time resource;

alternatively, the first and second electrodes may be,

19. The network-side device of claim 17,

the sending module is specifically configured to send a first synchronization access signal block in the synchronization access signal set at a preset initial sending time.

20. The network-side device of claim 19, wherein when the time resource is a subframe, the initial transmission time is a preset subframe in a frame; and when the time resource is a slot, the initial sending time is a preset slot in a frame.

21. The network-side device of claim 20, wherein when the time resource is a subframe, the initial transmission time is a first subframe in a frame; and when the time resource is a slot, the initial sending time is the first slot in a frame or the slot in the first subframe in the frame.

22. The network-side device of claim 17, wherein the sending module is specifically configured to send a synchronization access signal block corresponding to a subframe through a preset slot in the subframe;

the network side device further includes:

and the data transmission module is used for transmitting data through other slots in the subframes.

23. The network-side device of claim 22, wherein the preset slot in the subframe is a first slot or a second slot in the subframe.

24. The network side device according to claim 17, wherein the location information of the time resource used for transmitting the first synchronization access signal block in the synchronization access signal set is, specifically, a sequence number of a subframe or slot in the frame used for transmitting the first synchronization access signal block in the synchronization access signal set.

25. A user terminal, comprising:

a searching module, configured to search different synchronization access signal blocks in a synchronization access signal set on different time resources, where each synchronization access signal block in the synchronization access signal set includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH signal, each PBCH signal includes a primary information block MIB, where the MIB includes sequence number information, and the sequence number information is used to indicate a sequence number of a synchronization access signal block in the synchronization access signal set where the MIB is located;

a demodulation module, configured to demodulate a PBCH signal in the searched synchronous access signal block when the synchronous access signal block in the synchronous access signal set is searched, so as to obtain an MIB;

the synchronization module is used for acquiring the serial number information from the MIB obtained by demodulation and using the serial number information to carry out time synchronization;

the search module is specifically configured to search, at a start position and an end position within each time resource, a PSS and an SSS included in a synchronization access signal block corresponding to the time resource; searching PBCH signals included in a synchronous access signal block corresponding to each time resource at the middle position in each time resource;

the synchronization module is specifically configured to acquire sequence number information and the location information from an MIB obtained by demodulation, and perform time synchronization using the sequence number information and the location information and a location of at least one of the PSS, the SSS, and the PBCH;

the synchronization module is specifically configured to perform time synchronization using the sequence number information and the location information.

26. The user terminal of claim 25,

the search module is specifically configured to search, in each time resource, for a first OFDM symbol and a second last OFDM symbol, a PSS included in a synchronization access signal block corresponding to the time resource; searching SSS included in a synchronous access signal block corresponding to each time resource in a second OFDM symbol and a last OFDM symbol in each time resource;

alternatively, the first and second electrodes may be,

27. The user terminal of claim 25,

the search module is specifically configured to search for a first synchronization access signal block in the synchronization access signal set at a preset initial transmission time;

the synchronization module is specifically configured to acquire sequence number information from the MIB obtained through demodulation, and perform time synchronization using the sequence number information and the initial sending time.

28. The ue of claim 27, wherein the initial transmission time is a preset subframe within a frame when the time resource is a subframe; and when the time resource is a slot, the initial sending time is a preset slot in a frame.

29. The ue of claim 28, wherein when the time resource is a subframe, the initial transmission time is a first subframe in a frame; and when the time resource is a slot, the initial sending time is the first slot in a frame or the slot in the first subframe in the frame.

30. The user terminal of claim 29,

the search module is specifically configured to search a synchronization access signal block corresponding to a subframe in a preset slot in the subframe;

the user terminal further comprises:

and the data receiving module is used for receiving data in other slots in the subframes.

31. The ue of claim 30, wherein the predetermined slot in the subframe is a first slot or a second slot in the subframe.

32. The ue of claim 25, wherein the location information of the time resource for transmitting the first synchronization access signal block in the synchronization access signal set is, specifically, a sequence number of a subframe or slot in the frame for transmitting the first synchronization access signal block in the synchronization access signal set.

33. A transmission system for synchronizing access signal blocks, characterized in that it comprises a network side device according to any of claims 17 to 24 and a user terminal according to any of claims 25 to 32.