CN110710301B

CN110710301B - Method for determining frequency domain position of synchronization signal block, terminal equipment and network equipment

Info

Publication number: CN110710301B
Application number: CN201880036990.0A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2021-03-05
Anticipated expiration: 2038-01-12
Also published as: WO2019136727A1; CN110710301A

Abstract

A method, a terminal device and a network device for determining the frequency domain position of a synchronization signal block are provided. The method comprises the following steps: the terminal equipment receives first indication information sent by the network equipment, wherein the first indication information is used for indicating a subcarrier spacing (SCS), or the first indication information is used for indicating information of a frequency domain position of a synchronous signal block; when the first indication information is used for indicating the information of the frequency domain position of the synchronization signal block, the terminal equipment determines the frequency domain position of the synchronization signal block according to the first indication information. In the embodiment of the application, the network equipment indicates the information of the frequency domain position of the synchronous signal block by multiplexing the first indication information; the accuracy of the frequency domain position of the synchronization signal block can be effectively improved.

Description

Method for determining frequency domain position of synchronization signal block, terminal equipment and network equipment

Technical Field

The embodiments of the present invention relate to the field of communications, and in particular, to a method, a terminal device, and a network device for determining a frequency domain position of a synchronization signal block.

Background

In the prior art, when a terminal device determines a frequency domain position of a synchronization signal block (SS block), the terminal device indicates an offset value of a synchronization raster (raster) where a second SS block is located relative to a synchronization raster where a first SS block is located.

More specifically, the reserved value in the Information field is offset (grid offset) by a Physical Resource Block (PRB) grid, and the 8-bit joint indication in the Control Resource Set (core) Information field of the Remaining System Information (RMSI).

Although there are 4 reserved values in the PRB grid offset information field: r0, R1, R2, R3, the 4 reserved values, indicated in conjunction with 8 bits in the CORESET information field of RMSI, can indicate the location of 1024 synchronous rasters.

However, for the band (band) n77, the positions containing 620 synchronization grids (raster) in total, the positions to be indicated include-619, …, -1, +1, …, +619, and 1238 indication positions, and at this time, the existing indication method cannot completely indicate the positions.

Disclosure of Invention

A method for determining frequency domain position of synchronization signal block, terminal equipment and network equipment are provided. The accuracy of the frequency domain position of the synchronization signal block can be effectively improved.

In a first aspect, a method for determining a frequency domain position of a synchronization signal block is provided, the method comprising:

the method comprises the steps that terminal equipment receives first indication information sent by network equipment, wherein the first indication information is used for indicating subcarrier spacing SCS, or the first indication information is used for indicating information of frequency domain positions of synchronous signal blocks;

and when the first indication information is used for indicating the information of the frequency domain position of the synchronization signal block, the terminal equipment determines the frequency domain position of the synchronization signal block according to the first indication information.

In the embodiment of the application, the network equipment indicates the information of the frequency domain position of the synchronous signal block by multiplexing the first indication information; the accuracy of the frequency domain position of the synchronization signal block can be effectively improved.

In some possible implementations, before the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the method further includes:

the terminal equipment determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block.

the terminal equipment receives second indication information sent by the network equipment, wherein the second indication information is used for indicating a reserved value in a Physical Resource Block (PRB) grid offset information domain, and the reserved value in the PRB grid offset information domain is used for indicating that no residual system information RMSI exists in downlink transmission of the terminal equipment;

wherein the determining, by the terminal device, whether the first indication information is used for indicating the frequency domain position of the synchronization signal block includes:

and the terminal equipment determines the frequency domain position of the synchronization signal block by the first indication information according to the second indication information.

In some possible implementations, the reserved value in the PRB grid offset information domain is also used to indicate the frequency domain location of the synchronization signal block.

In some possible implementations, the second indication information includes 4 of the reserved values.

In some possible implementations, the determining, by the terminal device, whether the first indication information is used for indicating a frequency domain position of the synchronization signal block includes:

and the terminal equipment determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block or not based on the frequency band in which the terminal equipment sends the first indication information.

and the terminal equipment determines whether the first indication information is used for indicating the frequency domain position of the synchronous signal block or not based on the number of the synchronous grids existing in the frequency band where the first indication information is sent by the terminal equipment.

In some possible implementation manners, the determining, by the terminal device, whether the first indication information is used for indicating a frequency domain position of a synchronization signal block based on the number of synchronization grids existing in a frequency band where the terminal device sends the first indication information includes:

and when the terminal equipment determines that the number of the synchronization grids is greater than a preset threshold value, the first indication information is used for indicating the frequency domain position of the synchronization signal block.

In some possible implementations, the preset threshold is 512.

In some possible implementations, the subcarrier spacing includes a subcarrier spacing of a physical downlink shared channel PDSCH carrying at least one of the following information:

carries the remaining system information RMSI, message 2/4 in the random access procedure, and other system information OSI.

In some possible implementations, the first indication information includes 1 bit.

and the terminal device receives third indication information sent by the network device, where the third indication information is used to indicate information of a control resource set, or the third indication information is used to indicate a frequency domain position of the synchronization signal block.

and the terminal equipment determines the third indication information to be used for indicating the frequency domain position of the synchronous signal block according to the second indication information.

In some possible implementation manners, the determining, by the terminal device, a frequency domain position of a synchronization signal block according to the first indication information includes:

and the terminal equipment determines the frequency domain position of the synchronous signal block according to the first indication information, the second indication information and/or the third indication information.

In some possible implementations, the third indication information includes 8 bits.

In a second aspect, a method for determining a synchronization signal block position is provided, including:

the network equipment generates first indication information, wherein the first indication information is used for indicating subcarrier spacing (SCS), or the first indication information is used for indicating information of frequency domain position of a synchronous signal block;

and the network equipment sends the first indication information to the terminal equipment, so that when the first indication information is used for indicating the information of the frequency domain position of the synchronous signal block, the terminal equipment determines the frequency domain position of the synchronous signal block according to the first indication information.

In some possible implementations, before the network device generates the first indication information, the method further includes:

the network device determines whether the first indication information is used to indicate a frequency domain location of the synchronization signal block.

In some possible implementations, the determining, by the network device, whether the first indication information is used for indicating a frequency domain position of the synchronization signal block includes:

and when the network equipment determines that the residual system information RMSI does not exist in the downlink transmission of the terminal equipment, determining that the first indication information is used for indicating the frequency domain position of the synchronization signal block.

and the network equipment determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block or not based on the frequency band in which the terminal equipment sends the first indication information.

and the network equipment determines whether the first indication information is used for indicating the frequency domain position of the synchronous signal block or not based on the number of the synchronous grids existing in the frequency band where the terminal equipment sends the first indication information.

In some possible implementation manners, the determining, by the network device, whether the first indication information is used for indicating a frequency domain position of a synchronization signal block based on the number of synchronization grids existing in a frequency band where the terminal device sends the first indication information includes:

and when the network equipment determines that the number of the synchronization grids is greater than a preset threshold value, the first indication information is used for indicating the frequency domain position of the synchronization signal block.

In some possible implementations, the preset threshold is 512.

In some possible implementations, the method further includes:

when the network device determines that the remaining system information RMSI does not exist in the downlink transmission of the terminal device, generating second indication information, where the second indication information is used to indicate a reserved value in a physical resource block PRB grid offset information domain, and the reserved value in the PRB grid offset information domain is used to indicate that the remaining system information RMSI does not exist in the downlink transmission of the terminal device;

and the network equipment sends the second indication information to the terminal equipment.

In some possible implementations, the method further includes:

and the network device sends third indication information to the terminal device, where the third indication information is used to indicate information of a control resource set, or the third indication information is used to indicate a frequency domain position of the synchronization signal block.

In some possible implementations, before the network device sends the third indication information to the terminal device, the method further includes:

and when the network equipment determines that the residual system information RMSI does not exist in the downlink transmission of the terminal equipment, determining that the third indication information is used for indicating the frequency domain position of the synchronization signal block.

In a third aspect, a terminal device is provided, which includes:

a transceiver unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate a subcarrier spacing SCS, or the first indication information is used to indicate information of a frequency domain position of a synchronization signal block;

and the processing unit is used for determining the frequency domain position of the synchronous signal block according to the first indication information when the first indication information is used for indicating the information of the frequency domain position of the synchronous signal block.

In a fourth aspect, a terminal device is provided, which includes:

a transceiver, configured to receive first indication information sent by a network device, where the first indication information is used to indicate a subcarrier spacing SCS, or the first indication information is used to indicate information of a frequency domain position of a synchronization signal block;

and the processor is used for determining the frequency domain position of the synchronous signal block according to the first indication information when the first indication information is used for indicating the information of the frequency domain position of the synchronous signal block.

In a fifth aspect, a network device is provided, which includes:

a processing unit, configured to generate first indication information, where the first indication information is used to indicate a subcarrier spacing SCS, or the first indication information is used to indicate information of a frequency domain position of a synchronization signal block;

and the transceiver unit is configured to send the first indication information to the terminal device, so that when the first indication information is used to indicate information of the frequency domain position of the synchronization signal block, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information.

In a sixth aspect, a network device is provided, comprising:

a processor for generating first indication information for indicating subcarrier spacing, SCS, or information for indicating frequency domain position of a synchronization signal block;

and the transceiver is used for sending the first indication information to the terminal equipment, so that when the first indication information is used for indicating the information of the frequency domain position of the synchronization signal block, the terminal equipment determines the frequency domain position of the synchronization signal block according to the first indication information.

In a seventh aspect, a computer-readable medium is provided for storing a computer program comprising instructions for performing the method embodiments of the first or second aspect described above.

In an eighth aspect, there is provided a computer chip comprising: an input interface, an output interface, at least one processor, a memory, the processor being configured to execute code in the memory, and when the code is executed, the processor being capable of implementing the processes performed by the terminal device in the method for determining a frequency domain position of a synchronization signal block in the first aspect and various implementations described above.

In a ninth aspect, there is provided a computer chip comprising: an input interface, an output interface, at least one processor, a memory, the processor being configured to execute code in the memory, the code, when executed, implementing the processes performed by the network device in the method of determining a frequency domain location of a synchronization signal block in the second aspect and various implementations.

A tenth aspect provides a communication system, including the aforementioned network device, and the aforementioned terminal device.

Drawings

Fig. 1 is an example of an application scenario of the present invention.

Fig. 2 is a schematic block diagram of an SS block of an embodiment of the present invention.

Fig. 3 is a schematic flow chart of a method of determining the location of a synchronization signal block in accordance with an embodiment of the present invention.

Fig. 4 is a schematic block diagram of a terminal device of an embodiment of the present invention.

Fig. 5 is a schematic block diagram of another terminal device of an embodiment of the present invention.

Fig. 6 is a schematic block diagram of a network device of an embodiment of the present invention.

Fig. 7 is a schematic block diagram of another network device of an embodiment of the present invention.

Detailed Description

It should be understood that the technical solution of the embodiment of the present invention may be applied to various scenarios including a 5G communication system. For example, a mixed deployment scenario composed of the 5G communication system and the first communication system, and the like. The first communication system may be any one of communication systems. For example: a Long Term Evolution (LTE) System, a Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS) System, and the like. For convenience of understanding, the embodiment of the present invention is only exemplified by the 5G communication system, but the embodiment of the present invention is not limited thereto.

Furthermore, various embodiments are described herein in connection with a network device and a terminal device.

A network device may refer to any entity on the network side that transmits or receives signals. E.g., base station equipment in a 5G network, etc.

The terminal device may be any terminal device. Specifically, a terminal device may communicate with one or more Core networks (Core networks) through a Radio Access Network (RAN), and may also be referred to as an Access terminal, a User Equipment (UE), a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. For example, it may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, or the like.

Fig. 1 is a schematic diagram of a 5G application scenario according to an embodiment of the present invention.

As shown in fig. 1, communication system 100 may include network device 110, terminal device 120, and terminal device 130. Network device 110 may communicate with terminal device 120 and terminal device 130, respectively, over the air. Multi-service transport is supported between network device 110 and the terminal devices (terminal device 120 and terminal device 130).

In the communication system 100 shown in fig. 1, since the frequency band used is high, the path loss of radio signal transmission becomes large, and the coverage of radio signals becomes small. At this time, in the multi-antenna system of the network device 110, a beam forming (beamforming) technique is used to form a beam to increase the gain of the wireless signal to compensate for the path loss. However, the beams have directivity, and one narrow beam can cover only a partial area of the cell, and cannot cover all users in the cell.

For example, as shown in fig. 1, the network device 110 may transmit signals through 4 beams (B1/B2/B3/B4) in different directions, and for the beam B2, only the terminal device 120 may be covered, but the terminal device 130 may not be covered.

Therefore, Synchronization Signals (SS) and Physical Broadcast Channels (PBCH) involved in the communication system 100 need to cover the whole cell by means of multi-beam scanning, so as to facilitate the reception of the terminal devices in the cell. Here, the multi-beam transmission of the Synchronization Signal (SS) is realized by defining a SS burst Set. An SS burst set contains one or more SS bursts, and an SS burst contains one or more SS blocks (blocks). One SS block is used to carry the synchronization signal and broadcast channel of one beam.

Specifically, as shown in fig. 2, one SS block includes a Primary Synchronization Signal (PSS) of one symbol, a Secondary Synchronization Signal (SSs) of one symbol, and a New Radio Access Technology-Physical broadcast channel (NR-PBCH) of two symbols. Thus, an SS Burst Set may contain synchronization signals for SS block beams within a cell.

It should be understood that in the embodiment of the present application, the period of the SS burst set is configurable, and the SS burst set sent in one period is sent in a time window of 5 ms. For example, taking a 15kHz subcarrier spacing as an example, one slot (slot) contains 14 symbols (symbols), which can carry two SS blocks. It should also be understood that in addition to the above-mentioned synchronization signals and PBCH, some other common Information, such as Remaining System Information (RMSI), paging (paging), needs to be transmitted by multi-beam scanning.

In practical operation, when a User Equipment (UE) needs to access a network, a system message needs to be acquired from the network.

Specifically, a part of the system messages are carried by the NR-PBCH, and another part of the system messages are carried by the NR-PDSCH. Wherein the system message carried through the NR-PDSCH includes Remaining system information (RMSI). Downlink Control Information (DCI) corresponding to the NR-PDSCH is carried on the NR-PDCCH, and the location of the time-frequency resource where the NR-PDCCH is located is indicated by the CORESET Information carried by the NR-PBCH.

Meanwhile, the NR-PBCH also carries RMSI presence flag information for indicating whether the SS block is associated with RMSI information. The RMSI presence flag information indicates that there is no RMSI through a reserved value in a PRB trellis offset (grid offset) information field. When the PRB grid offset information field indicates that there is no RMSI, the network device may indicate the frequency-domain location information of the terminal device synchronization signal block using some existing bits.

For ease of understanding, the PRB grid offset information is explained below:

for the frequency resources within the bandwidth, the division is performed in units of RBs, each RB includes 12 subcarriers. However, the RB partition for SS block and the RB partition for data channel may be misaligned, i.e., the starting subcarrier of one RB is not coincident, but there is one offset. At this time, the deviation between RBs needs to be indicated by PRB grid offset information in PBCH, and Resource Elements (REs) whose offsets differ by 0-11 SS blocks can be currently indicated by 4 bits. Here, one subcarrier in frequency and one symbol in time domain (symbol) are referred to as one RE.

Specifically, since the PRB grid offset information field includes 4 bits, it is used to indicate the offset between the physical resource block PRB grids between the channels or signals of the synchronization signal block and the non-synchronization signal block, and the offset includes 0-11 subcarriers.

Therefore, 4 reserved values are also included in the PRB grid offset information field, which can be used to indicate that there is no RMSI.

Furthermore, in the communication system 100 shown in fig. 1, for an initially accessed UE, a common search space (common search space) needs to be defined for receiving common control information.

For example, Remaining System Information (RMSI).

Therefore, in the embodiment of the present application, a concept of a Control Resource Set (core Set) is introduced to define a Resource Set for carrying Control information, and the UE detects a New Radio-Physical Downlink Control Channel (NR-PDCCH) in the Resource Set to obtain scheduling information of a New Radio-Physical Downlink Shared Channel (NR-PDSCH) carrying RMSI. Indication information of the CORESET is carried in the NR-PBCH for the UE to receive the RMSI. Specifically, the configuration information of CORESET mainly includes the following information: frequency domain resources, starting Orthogonal Frequency Division Multiplexing (OFDM) symbols, and time length.

Further, the CORESET information of the RMSI may be indicated by 8 bits.

It can be seen that when the PRB grid offset information field indicates that there is no RMSI, the CORESET information field may be used to indicate frequency domain location information of a synchronization signal block, thereby facilitating the UE to reduce blind detection, detect PBCH in the synchronization signal block according to the frequency domain location information of the synchronization signal block to obtain CORESET information of the RMSI, and receive the RMSI.

In the following, a method for determining a frequency domain position of a synchronization signal by a terminal device in this embodiment is described:

in the embodiment of the present application, for a radio spectrum in NR, the frequency domain position of a synchronization signal block may be defined by a synchronization grid (raster).

TABLE 1 frequency Domain location of SS Block in frequency Range vs. GSCN

Where GSCN denotes Global Synchronization Channel Number (Global Synchronization Channel Number).

Specifically, as shown in table 1, the possible frequency domain locations of the synchronization signal block at different frequency ranges are determined by the formula in the table. More specifically, the numbering is done by SSREF and the determination is made based on the SSREF numbering. Where SSREF denotes the frequency domain location of the sync signal block.

Further, after the synchronization raster is determined, the resource mapping of the synchronization signal block may be further determined according to the following table.

Table 2 mapping relationship of synchronization grid and resource elements of synchronization signal block

Resource element index k	0
		Number n of physical resource block of SS block^PRB	n_PRB＝10

As can be seen from table 2, the synchronization reader is located in the RE of number 0 of PRB number 10 of 20 Physical Resource Blocks (PRBs) of the synchronization signal block.

Furthermore, it is noted that for synchronous rasters, the distribution of synchronous rasters within a band is not the same under different frequency bands (bands).

Table 3 GSCN for each band

The SS Block SCS is a subcarrier spacing (SCS) of the SS Block. GSCN denotes Global Synchronization Channel Number (Global Synchronization Channel Number).

As can be seen from table 3, the distribution of synchronous rasters in different frequency bands (bands) is within the bands. For example, for band n77, the number range of synchronized rasters is 9460-10079 for a total of 620 synchronized rasters.

As can be seen from the above analysis, when the reserved value in the PRB grid offset information field indicates that there is no RMSI, the resource information of the second SS block relative to the first SS block may be indicated by a bit in the CORESET information field of the RMSI. Since the CORESET information field contains 8 bits, the positions of 256 synchronization rasters can be indicated by indicating the offsets of the synchronization rasters corresponding to the target synchronization raster and the current synchronization signal block. The absence of the RMSI may also be indicated by a reserved value in the PRB grid offset information field, and the resource information of the second SS block relative to the first SS block may be indicated by a combination of the reserved value in the PRB grid offset information field and a bit in the CORESET information field of the RMSI.

TABLE 4 offset of synchronization grid for band n78

Specifically, as shown in table 4, R0, R1, R2 are reserved values in the PRB grid offset information field, which can all be used to indicate that there is no RMSI. The CORESET information field of the RMSI shares 8 bits, which may represent 0-255, and these two pieces of information are used to jointly indicate the frequency domain location information of the second SS block, where the frequency domain location information indicates the number of sync rasters that are offset from the sync rasters where the first SS block is located by the sync rasters where the second SS block is located. It should be understood that table 4 is only exemplarily illustrated by band n78, and the embodiments of the present application are not limited thereto. For example, band n78 needs to indicate that the range of synchronous rasters includes-342, -341, …, -1,1, …,341, 342. But for other bands, the range of synchronized rasters is not so limited.

It can be found that only the locations of 1024 synchronization transmitters can be indicated by a method in which a reserved value in a Physical Resource Block (PRB) grid offset (grid offset) Information field and 8 bits in a Control Resource Set (CORESET) Information field of Remaining System Information (RMSI) jointly indicate the frequency domain location of a synchronization signal block.

Therefore, in the embodiment of the present application, a method for determining a frequency domain position of a synchronization signal block is provided, and by using a method for indicating a frequency domain position of a synchronization signal block by multiplexing first indication information, accuracy of the frequency domain position of the synchronization signal block determined by a terminal device can be effectively improved.

Fig. 3 is a schematic flow chart of a method of determining a frequency domain location of a synchronization signal block according to an embodiment of the present invention.

Specifically, as shown in fig. 3, the method includes:

the network device generates 210 first indication information indicating the subcarrier spacing SCS or information indicating the frequency domain position of the synchronization signal block.

220, the network device sends the first indication information to the terminal device.

And 230, when the first indication information is used for indicating the information of the frequency domain position of the synchronization signal block, the terminal equipment determines the frequency domain position of the synchronization signal block according to the first indication information.

It should be understood that the subcarrier spacing includes a subcarrier spacing of a physical downlink shared channel PDSCH carrying at least one of the following information:

Further, the first indication information includes 1 bit. In one embodiment, before the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the terminal device determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block.

The following describes an implementation manner of determining, by the terminal device, whether the first indication information is used for indicating the frequency domain position of the synchronization signal block:

in one embodiment, before the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the terminal device receives second indication information sent by the network device, where the second indication information is used to indicate a reserved value in a physical resource block PRB grid offset information field, and the reserved value in the PRB grid offset information field is used to indicate that no remaining system information RMSI exists in downlink transmission of the terminal device; therefore, the terminal equipment determines the first indication information to indicate the frequency domain position of the synchronization signal block according to the second indication information.

Further, the reserved value in the PRB grid offset information field is also used to indicate the frequency domain location of the synchronization signal block.

Further, the second indication information includes 4 reserved values.

In other words, before the network device generates the first indication information, it is determined whether the first indication information is used to indicate the frequency domain position of the synchronization signal block. Specifically, when the network device determines that the remaining system information RMSI does not exist in the downlink transmission of the terminal device, it determines that the first indication information is used for indicating the frequency domain position of the synchronization signal block.

In addition, when determining that the remaining system information RMSI does not exist in the downlink transmission of the terminal device, the network device generates second indication information, where the second indication information is used to indicate a reserved value in a physical resource block PRB grid offset information field, and the reserved value in the PRB grid offset information field is used to indicate that the remaining system information RMSI does not exist in the downlink transmission of the terminal device; and the network equipment sends the second indication information to the terminal equipment.

In another embodiment, the terminal device determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block based on the frequency band in which the terminal device transmits the first indication information. Likewise, the network device determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block based on the frequency band in which the terminal device transmits the first indication information.

In another embodiment, the terminal device determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block based on the number of synchronization grids existing in the frequency band in which the terminal device transmits the first indication information. Likewise, the network device determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block based on the number of synchronization grids existing in the frequency band in which the terminal device transmits the first indication information.

For example, taking the terminal device as an example, when the terminal device determines that the number of the synchronization grids is greater than a preset threshold, the first indication information is used to indicate the frequency domain position of the synchronization signal block. Further, the preset threshold may be 512.

It should be understood that, in this embodiment of the present application, the above-mentioned embodiment is only an implementation manner of determining, by the terminal device, whether the first indication information is used for indicating the frequency domain position of the synchronization signal block, and this embodiment of the present application is not particularly limited.

For example, the terminal device may determine whether the first indication information is used for indicating the frequency domain position of the synchronization signal block in combination with the second indication information referred to above and the frequency band in which the first indication information is transmitted or the number of synchronization grids existing in the frequency band.

It should be understood that, in the embodiment of the present application, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, but the embodiment of the present application is not limited thereto.

For example, the terminal device may also determine the frequency domain location of the synchronization signal block in combination with the second indication information referred to above.

The following introduces a third indication information for exemplary explanation:

in one embodiment, before the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the terminal device receives third indication information sent by the network device, where the third indication information is used to indicate information for controlling the resource set, or the third indication information is used to indicate the frequency domain position of the synchronization signal block.

Further, before the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the terminal device determines the third indication information for indicating the frequency domain position of the synchronization signal block according to the second indication information.

Furthermore, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the second indication information and/or the third indication information.

For example, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information.

For another example, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information and the second indication information.

For another example, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information and the third indication information.

For another example, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the second indication information and the third indication information.

Further, the third indication information includes 8 bits.

In other words, before the network device sends the third indication information to the terminal device, when it is determined that the remaining system information RMSI does not exist in the downlink transmission of the terminal device, it is determined that the third indication information is used for indicating the frequency domain position of the synchronization signal block.

It should be understood that the third indication information mentioned above is only an exemplary description of the embodiments of the present application, and the embodiments of the present application are not limited thereto, for example, the network device may also indicate the frequency domain position of the synchronization signal block by multiplexing other bits.

As shown in fig. 4, the terminal device 300 includes:

a transceiving unit 310, configured to receive first indication information sent by a network device, where the first indication information is used to indicate a subcarrier spacing SCS, or the first indication information is used to indicate information of a frequency domain position of a synchronization signal block;

the processing unit 320 is configured to determine the frequency domain position of the synchronization signal block according to the first indication information when the first indication information is used for indicating the information of the frequency domain position of the synchronization signal block.

In one embodiment, the processing unit 320 is further configured to:

the processing unit 320 determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block before determining the frequency domain position of the synchronization signal block according to the first indication information.

In one embodiment, the transceiving unit 310 is further configured to:

the processing unit 320, before determining the frequency domain position of the synchronization signal block according to the first indication information, receives second indication information sent by the network device, where the second indication information is used to indicate a reserved value in a physical resource block PRB grid offset information field, and the reserved value in the PRB grid offset information field is used to indicate that no remaining system information RMSI exists in downlink transmission of the terminal device;

wherein, the processing unit 320 is specifically configured to:

and determining the first indication information to indicate the frequency domain position of the synchronization signal block according to the second indication information.

In one embodiment, the reserved value in the PRB grid offset information field is also used to indicate the frequency domain location of the synchronization signal block.

In one embodiment, the second indication information includes 4 of the reserved values.

In one embodiment, the processing unit 320 is specifically configured to:

and determining whether the first indication information is used for indicating the frequency domain position of the synchronous signal block or not based on the frequency band in which the terminal equipment sends the first indication information.

In one embodiment, the processing unit 320 is specifically configured to:

and determining whether the first indication information is used for indicating the frequency domain position of the synchronous signal block or not based on the number of the synchronous grids existing in the frequency band where the terminal equipment sends the first indication information.

In one embodiment, the processing unit 320 is more specifically configured to:

and when the number of the synchronization grids is determined to be larger than a preset threshold value, the first indication information is used for indicating the frequency domain position of the synchronization signal block.

In one embodiment, the predetermined threshold is 512.

In one embodiment, the subcarrier spacing comprises a subcarrier spacing of a physical downlink shared channel, PDSCH, carrying at least one of the following information:

In one embodiment, the first indication information includes 1 bit.

In one embodiment, the transceiving unit 310 is further configured to:

the processing unit 320 receives third indication information sent by the network device before determining the frequency domain position of the synchronization signal block according to the first indication information, where the third indication information is used to indicate information of a control resource set, or the third indication information is used to indicate the frequency domain position of the synchronization signal block.

In one embodiment, the processing unit 320 is further configured to:

before determining the frequency domain position of the synchronization signal block according to the first indication information, determining the third indication information for indicating the frequency domain position of the synchronization signal block according to the second indication information.

In one embodiment, the processing unit 320 is more specifically configured to:

In one embodiment, the third indication information includes 8 bits.

In the embodiment of the present invention, the transceiver unit 310 may be implemented by a transceiver, and the processing unit 320 may be implemented by a processor. As shown in fig. 5, the terminal device 400 may include a processor 410, a transceiver 420, and a memory 430. Memory 430 may be used to store, among other things, indication information, and may also be used to store code, instructions, etc. that are executed by processor 410. The individual components in the terminal device 400 are connected via a bus system, wherein the bus system comprises, in addition to a data bus, a power bus, a control bus and a status signal bus.

The terminal device 400 shown in fig. 5 is capable of implementing the processes implemented by the terminal device in the foregoing method embodiment of fig. 3, and is not described here again to avoid repetition.

A processing unit 510, configured to generate first indication information, where the first indication information is used to indicate a subcarrier spacing SCS, or the first indication information is used to indicate information of a frequency domain position of a synchronization signal block;

a transceiver 520, configured to send the first indication information to the terminal device, so that when the first indication information is used to indicate information of the frequency domain position of the synchronization signal block, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information.

In one embodiment, the processing unit 510 is further configured to:

before generating the first indication information, determining whether the first indication information is used for indicating the frequency domain position of the synchronization signal block.

In one embodiment, the processing unit 510 is more specifically configured to:

and when determining that the residual system information RMSI does not exist in the downlink transmission of the terminal equipment, determining the first indication information to be used for indicating the frequency domain position of the synchronization signal block.

In one embodiment, the processing unit 510 is more specifically configured to:

In one embodiment, the predetermined threshold is 512.

In one embodiment, the processing unit 510 is specifically configured to:

when determining that the remaining system information RMSI does not exist in the downlink transmission of the terminal device, generating second indication information, where the second indication information is used to indicate a reserved value in a physical resource block PRB grid offset information domain, and the reserved value in the PRB grid offset information domain is used to indicate that the remaining system information RMSI does not exist in the downlink transmission of the terminal device; the transceiver 520 is further configured to send the second indication information to the terminal device.

In one embodiment, the first indication information includes 1 bit.

In one embodiment, the transceiving unit 520 is further configured to:

and sending third indication information to the terminal equipment, wherein the third indication information is used for indicating information of a control resource set, or the third indication information is used for indicating the frequency domain position of the synchronization signal block.

In one embodiment, the processing unit 510 is further configured to:

before the transceiver unit 520 sends the third indication information to the terminal device, when it is determined that the remaining system information RMSI does not exist in the downlink transmission of the terminal device, it is determined that the third indication information is used for indicating the frequency domain position of the synchronization signal block.

In one embodiment, the third indication information includes 8 bits.

In an embodiment of the present invention, the processing unit 510 may be implemented by a transceiver, and the transceiving unit 520 may be implemented by a processor. As shown in fig. 7, network device 600 may include a processor 610, a transceiver 620, and a memory 630. Memory 630 may be used to store, among other things, indication information, and may also be used to store code, instructions, etc. that are executed by processor 610. The various components in network device 600 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The network device 600 shown in fig. 7 is capable of implementing the processes implemented by the network device in the foregoing method embodiment of fig. 3, and is not described here again to avoid repetition.

That is, the method embodiments in the embodiments of the present invention may be implemented by a processor and a transceiver.

In implementation, the steps of the method embodiments of the present invention may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. More specifically, 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 modules may be located in ram, flash memory, rom, prom, or eprom, registers, among other storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It should be understood that the processor mentioned in the embodiments of the present invention may be an integrated circuit chip having signal processing capability, and may implement or execute the methods, steps and logic blocks disclosed in the embodiments of the present invention. For example, the processor 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, a transistor logic device, a discrete hardware component, and so on. Further, a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

Further, the memory mentioned in the embodiments of the present invention may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present invention may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Finally, it is noted that the terminology used in the embodiments of the present invention and the appended claims is for the purpose of describing particular embodiments only and is not intended to be limiting of embodiments of the present invention.

For example, as used in the examples of the present invention and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

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 embodiments.

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 several embodiments provided in the present application, it should be understood that the disclosed system, 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 there may be other divisions in actual implementation, 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 elements may be selected according to actual needs to achieve the objectives of the embodiments 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.

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 solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several 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 described in the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

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

Claims

1. A method for determining a synchronization signal block location, comprising:

the method comprises the steps that terminal equipment receives first indication information sent by network equipment, wherein the first indication information is used for indicating information of frequency domain positions of synchronous signal blocks;

when the first indication information is used for indicating the information of the frequency domain position of the synchronous signal block, the terminal equipment determines the frequency domain position of the synchronous signal block according to the first indication information,

before the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the method further includes:

the terminal device determines whether the first indication information is used to indicate a frequency domain position of the synchronization signal block,

the terminal device receives second indication information sent by the network device, wherein the second indication information is used for indicating a reserved value in a Physical Resource Block (PRB) grid offset information domain, and the reserved value in the PRB grid offset information domain is used for indicating that no residual system information RMSI exists in downlink transmission of the terminal device,

2. The method of claim 1, wherein the reserved value in the PRB grid offset information domain is further used to indicate a frequency domain location of the synchronization signal block.

3. The method according to claim 1 or 2, wherein the second indication information comprises 4 of the reserved values.

4. The method of claim 1 or 2, wherein the terminal device determining whether the first indication information is used for indicating the frequency domain position of the synchronization signal block comprises:

5. The method of claim 1 or 2, wherein the terminal device determining whether the first indication information is used for indicating the frequency domain position of the synchronization signal block comprises:

6. The method of claim 5, wherein the determining, by the terminal device, whether the first indication information is used for indicating the frequency domain position of the synchronization signal block based on the number of synchronization grids existing in the frequency band in which the terminal device transmits the first indication information comprises:

7. The method of claim 6, wherein the preset threshold is 512.

8. The method of claim 1 or 2, wherein the first indication information comprises 1 bit.

9. The method according to claim 1 or 2, wherein before the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, the method further comprises:

10. The method of claim 9, wherein before the terminal device determines the frequency domain location of the synchronization signal block according to the first indication information, the method further comprises:

11. The method of claim 10, wherein the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information, and comprises:

12. The method of claim 10, wherein the third indication information comprises 8 bits.

13. A method for determining a synchronization signal block location, comprising:

the network equipment generates first indication information, wherein the first indication information is used for indicating information of frequency domain positions of the synchronous signal blocks;

the network equipment sends the first indication information to the terminal equipment, so that when the first indication information is used for indicating the information of the frequency domain position of the synchronous signal block, the terminal equipment determines the frequency domain position of the synchronous signal block according to the first indication information,

before the network device generates the first indication information, the method further includes:

the network device determines whether the first indication information is used to indicate a frequency domain location of the synchronization signal block,

the method further comprises the following steps:

14. The method of claim 13, wherein the network device determining whether the first indication information is used for indicating a frequency domain location of the synchronization signal block comprises:

15. The method of claim 13 or 14, wherein the network device determining whether the first indication information is used for indicating the frequency domain position of the synchronization signal block comprises:

16. The method of claim 13 or 14, wherein the network device determining whether the first indication information is used for indicating the frequency domain position of the synchronization signal block comprises:

17. The method of claim 16, wherein the determining, by the network device, whether the first indication information is used for indicating the frequency domain position of the synchronization signal block based on the number of synchronization grids existing in the frequency band in which the terminal device transmits the first indication information comprises:

18. The method of claim 17, wherein the predetermined threshold is 512.

19. The method of claim 13, wherein the reserved value in the PRB grid offset information domain is further used to indicate a frequency domain location of the synchronization signal block.

20. The method of claim 13, wherein the second indication information comprises 4 of the reserved values.

21. The method according to claim 13 or 14, wherein the first indication information comprises 1 bit.

22. The method according to claim 13 or 14, characterized in that the method further comprises:

23. The method of claim 22, wherein before the network device sends the third indication information to the terminal device, the method further comprises:

24. The method of claim 22, wherein the third indication information comprises 8 bits.

25. A terminal device, comprising:

a transceiver unit, configured to receive first indication information sent by a network device, where the first indication information is used to indicate information of a frequency domain position of a synchronization signal block;

a processing unit, configured to determine the frequency domain position of the synchronization signal block according to the first indication information when the first indication information is used to indicate information of the frequency domain position of the synchronization signal block,

the processing unit is further to:

the processing unit determines whether the first indication information is used for indicating the frequency domain position of the synchronization signal block before determining the frequency domain position of the synchronization signal block according to the first indication information,

the transceiver unit is further configured to:

the processing unit receives second indication information sent by the network equipment before determining the frequency domain position of a synchronization signal block according to the first indication information, wherein the second indication information is used for indicating a reserved value in a Physical Resource Block (PRB) grid offset information domain, and the reserved value in the PRB grid offset information domain is used for indicating that no residual system information (RMSI) exists in downlink transmission of the terminal equipment;

wherein the processing unit is specifically configured to:

and determining the first indication information to indicate the frequency domain position of the synchronous signal block according to the second indication information.

26. The terminal device of claim 25, wherein the reserved value in the PRB grid offset information field is further used to indicate a frequency-domain location of the synchronization signal block.

27. A terminal device according to claim 25 or 26, wherein said second indication information comprises 4 of said reserved values.

28. The terminal device according to claim 25 or 26, wherein the processing unit is specifically configured to:

and determining whether the first indication information is used for indicating the frequency domain position of the synchronization signal block or not based on the frequency band in which the terminal equipment sends the first indication information.

29. The terminal device according to claim 25 or 26, wherein the processing unit is specifically configured to:

and determining whether the first indication information is used for indicating the frequency domain position of the synchronous signal block or not based on the number of the synchronous grids existing in the frequency band where the first indication information is sent by the terminal equipment.

30. The terminal device of claim 29, wherein the processing unit is further configured to:

31. The terminal device according to claim 30, wherein the preset threshold is 512.

32. A terminal device according to claim 25 or 26, wherein the first indication information comprises 1 bit.

33. The terminal device according to claim 25 or 26, wherein the transceiver unit is further configured to:

the processing unit receives third indication information sent by the network device before determining the frequency domain position of the synchronization signal block according to the first indication information, where the third indication information is used to indicate information of a control resource set, or the third indication information is used to indicate the frequency domain position of the synchronization signal block.

34. The terminal device of claim 33, wherein the processing unit is further configured to:

and determining the third indication information to indicate the frequency domain position of the synchronous signal block according to the second indication information before determining the frequency domain position of the synchronous signal block according to the first indication information.

35. The terminal device of claim 34, wherein the processing unit is further configured to:

36. The terminal device of claim 34, wherein the third indication information comprises 8 bits.

37. A network device, comprising:

a processing unit, configured to generate first indication information, where the first indication information is used to indicate information of a frequency domain position of a synchronization signal block;

a transceiver unit, configured to send the first indication information to a terminal device, so that when the first indication information is used to indicate information of a frequency domain position of a synchronization signal block, the terminal device determines the frequency domain position of the synchronization signal block according to the first indication information,

the processing unit is further to:

determining whether the first indication information is used to indicate a frequency domain position of the synchronization signal block before generating the first indication information,

the processing unit is specifically configured to:

when determining that the remaining system information RMSI does not exist in the downlink transmission of the terminal device, generating second indication information, where the second indication information is used to indicate a reserved value in a physical resource block PRB grid offset information domain, and the reserved value in the PRB grid offset information domain is used to indicate that the remaining system information RMSI does not exist in the downlink transmission of the terminal device;

the transceiver unit is further configured to send the second indication information to the terminal device.

38. The network device of claim 37, wherein the processing unit is more specifically configured to:

and when determining that the residual system information RMSI does not exist in the downlink transmission of the terminal equipment, determining that the first indication information is used for indicating the frequency domain position of the synchronization signal block.

39. Network device of claim 37 or 38, wherein the processing unit is more specifically configured to:

40. Network device of claim 37 or 38, wherein the processing unit is more specifically configured to:

41. The network device of claim 40, wherein the processing unit is more specifically configured to:

42. The network device of claim 41, wherein the preset threshold is 512.

43. The network device of claim 37, wherein the reserved value in the PRB grid offset information field is further configured to indicate a frequency-domain location of the synchronization signal block.

44. The network device of claim 37, wherein the second indication information comprises 4 of the reserved values.

45. The network device of claim 37 or 38, wherein the first indication information comprises 1 bit.

46. The network device according to claim 37 or 38, wherein the transceiving unit is further configured to:

and sending third indication information to the terminal device, where the third indication information is used to indicate information of a control resource set, or the third indication information is used to indicate a frequency domain position of the synchronization signal block.

47. The network device of claim 46, wherein the processing unit is further configured to:

before the transceiver unit sends the third indication information to the terminal device, when determining that the remaining system information RMSI does not exist in downlink transmission of the terminal device, determining that the third indication information is used for indicating the frequency domain position of the synchronization signal block.

48. The network device of claim 46, wherein the third indication information comprises 8 bits.

49. A terminal device comprising a memory and a processor for executing code in the memory, the processor implementing the method of any one of claims 1 to 12 when the code is executed.

50. A network device comprising a memory and a processor for executing code in the memory, the processor implementing the method of any of claims 13 to 24 when the code is executed.

51. A computer-readable medium, on which a computer program is stored which is executed by a processor to implement the method of any one of claims 1 to 12.

52. A computer-readable medium, on which a computer program is stored which is executed by a processor to implement the method of any one of claims 13 to 24.