CN109561506B - Communication method and communication device - Google Patents

Abstract

The application provides a communication method and communication equipment. The method comprises the following steps: determining first indication information, wherein the first indication information indicates a resource location of a second synchronization signal block, and the second synchronization signal block is associated with control information; and sending a first synchronous signal block, wherein a physical broadcast channel in the first synchronous signal block carries the first indication information. According to the technical scheme, the detection complexity of the terminal equipment can be effectively reduced.

Description

Communication method and communication device

technical field

The present application relates to the field of communication, and more particularly, to a communication method and communication device.

Background technique

In the ongoing standardization process of 5G by the 3rd Generation Partnership Project (3GPP), a carrier bandwidth of up to 400MHz is considered. However, for the terminal side, due to the cost of various types of terminal equipment, not all terminal equipment can support operations such as communication and measurement with a bandwidth of 400 MHz. At the same time, for the flexibility of system implementation and scheduling, it was agreed during the discussion of 5G that multiple synchronization signal blocks (Synchronization Signal block, SS block, SSB) should be sent on the network side on a wide bandwidth, so that terminal devices can connect to different SSBs. measurements or initial access.

Among the multiple SSBs on one bandwidth, some SSBs are not associated with the remaining system messages (Remaining System Information, RMSI). When the terminal device initially accesses, because there is no prior information, the terminal device does not know which SSB is associated with the RMSI before entering the network. Therefore, the terminal device needs to perform synchronization search and system message detection on the frequency point of the synchronization frequency where each SSB is located. When detecting that there is no RMSI associated with the current SSB, the terminal device will detect the next candidate synchronization frequency point in sequence. This will increase the detection complexity of the terminal equipment and the network access (successfully detected RMSI) delay.

Therefore, in a system in which multiple SSBs are flexibly configured in a bandwidth, how to effectively reduce the detection complexity of the terminal device becomes an urgent technical problem to be solved.

SUMMARY OF THE INVENTION

The present application provides a communication method and communication device, which can effectively reduce the detection complexity of a terminal device.

In a first aspect, a communication method is provided, including:

determining first indication information, wherein the first indication information indicates a resource location of a second synchronization signal block, and the second synchronization signal block is associated with control information;

A first synchronization signal block is sent, wherein the physical broadcast channel in the first synchronization signal block carries the first indication information.

In the technical solution of the embodiment of the present invention, by indicating the resource location of the synchronization signal block associated with the control information to the receiving side, the terminal device on the receiving side can directly know the resource location of the synchronization signal block, so that no blind detection is required, and the Switching to the corresponding resource location for searching can reduce the detection complexity of the terminal equipment, and reduce the search calculation time, power consumption and delay of the terminal equipment.

In some possible implementations, determining the first indication information includes:

When the first synchronization signal block is not associated with the control information, the first indication information is determined.

In some possible implementations, the method further includes:

determining a transmission mode of the first synchronization signal block, wherein the transmission mode indicates whether the first synchronization signal block is associated with the control information;

Send the first synchronization signal block, including:

The first synchronization signal block is sent according to the transmission method.

Through the transmission mode of the synchronization signal block, it is indicated to the receiving side whether the synchronization signal block is associated with control information, so that the terminal device on the receiving side can determine whether the synchronization signal block is associated with control information only by detecting the transmission mode of the synchronization signal block. , there is no need to blindly detect the physical broadcast channel, so that the detection complexity of the terminal device can be reduced, and the power consumption and time delay of the terminal device can be reduced.

In some possible implementations, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information, and it is determined that the mapping mode is a first mapping mode among multiple predetermined mapping modes; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the mapping mode is the second mapping mode among the plurality of predetermined mapping modes.

In some possible implementations, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on the transmission symbols of the first synchronization signal block;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information, and the value of the orthogonal cover code is determined to be a first value among multiple predetermined values; and/or

The first synchronization signal block is not associated with the control information, and the value of the orthogonal cover code is determined to be the second value among the plurality of pre-valued values.

In some possible implementations, the transmission mode of the first synchronization signal block includes a range to which the synchronization signal identifier used by the first synchronization signal block belongs;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the first subset; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the second subset.

In some possible implementations, determining the transmission mode of the first synchronization signal block includes:

The first synchronization signal block is associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block, and/or the first synchronization signal block is not associated with the control information , determine that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value; or,

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value, and/or, the first synchronization signal block Without being associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block;

Wherein, the predetermined value is greater than the difference between the maximum value and the minimum value in the value range of the synchronization signal identifier of the first synchronization signal block.

In some possible implementations, the transmission mode of the first synchronization signal block includes a cyclic redundancy check CRC mask used by the physical broadcast channel in the first synchronization signal block;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information, and the CRC mask is determined to be the first CRC mask among a plurality of predetermined CRC masks; and/or

The first synchronization signal block is not associated with the control information, and the CRC mask is determined to be the second CRC mask among the plurality of predetermined CRC masks.

In some possible implementation manners, the transmission manner of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information to determine that the scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences.

By using the above various transmission modes to implicitly indicate whether the synchronization signal block is associated with control information, the terminal device on the receiving side can determine whether the synchronization signal block is associated with control information according to the corresponding transmission mode, and there is no associated control information in the synchronization signal block. When the information is received, there is no need to continue to blindly detect the physical broadcast channel, so that the detection complexity of the terminal device can be reduced, and the power consumption and time delay of the terminal device can be reduced.

In some possible implementations, the physical broadcast channel further carries second indication information, where the second indication information indicates whether the first synchronization signal block is associated with the control information.

In some possible implementations, the physical broadcast channel further carries third indication information, where the third indication information indicates whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal identifier of the second synchronization signal block.

In some possible implementations, the physical broadcast channel further carries fourth indication information, where the fourth indication information indicates a synchronization signal identifier of the second synchronization signal block.

Using the physical broadcast channel to indicate the synchronization signal identifier of the second synchronization signal block, the detection complexity of the second device can be further reduced.

In a second aspect, there is provided a method of communication, characterized in that it includes:

receiving a first synchronization signal block;

Determine that the first synchronization signal block is not associated with control information, and obtain first indication information carried by the physical broadcast channel in the first synchronization signal block, where the first indication information indicates the resource location of the second synchronization signal block, the second synchronization signal block. The signal block is associated with the control information;

The control information is received according to the first indication information.

According to the technical solution of the embodiment of the present invention, through the resource location of the synchronization signal block associated with the control information indicated by the receiving side, the resource location of the synchronization signal block can be directly known, so that no blind detection is required, and the corresponding resource location can be directly switched to By doing a search, the detection complexity of the terminal device can be reduced, and the search calculation time, power consumption and time delay of the terminal device can be reduced.

In some possible implementations, the method further includes:

It is determined that the first synchronization signal block is associated with the control information, and the control information is received according to the first synchronization signal block.

In some possible implementations, the transmission mode of the first synchronization signal block indicates whether the first synchronization signal block is associated with the control information;

The method also includes:

According to the transmission mode of the first synchronization signal block, it is determined whether the first synchronization signal block is associated with the control information.

The terminal device determines whether the synchronization signal block is associated with control information according to the transmission mode of the synchronization signal block, and does not need to blindly detect the physical broadcast channel, thereby reducing the detection complexity of the terminal device and reducing the power consumption and delay of the terminal device.

In some possible implementations, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

Determining whether the first synchronization signal block is associated with control information includes:

The mapping manner is a first mapping manner among multiple predetermined mapping manners, and it is determined that the first synchronization signal block is associated with the control information; and/or

The mapping mode is the second mapping mode among the multiple predetermined mapping modes, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementations, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on the transmission symbols of the first synchronization signal block;

Determining whether the first synchronization signal block is associated with control information includes:

The value of the orthogonal cover code is a first value among multiple predetermined values, and it is determined that the first synchronization signal block is associated with the control information; and/or

The value of the orthogonal cover code is the second value among the plurality of pre-values, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementations, the transmission mode of the first synchronization signal block includes a range to which the synchronization signal identifier used by the first synchronization signal block belongs;

Determining whether the first synchronization signal block is associated with control information includes:

The synchronization signal identifier used by the first synchronization signal block belongs to the first subset, and it is determined that the first synchronization signal block is associated with the control information; and/or

The synchronization signal identifier used by the first synchronization signal block belongs to the second subset, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementations, the transmission mode of the first synchronization signal block includes a cyclic redundancy check CRC mask used by the physical broadcast channel in the first synchronization signal block;

Determining whether the first synchronization signal block is associated with control information includes:

The CRC mask is a first CRC mask among multiple predetermined CRC masks, and it is determined that the first synchronization signal block is associated with the control information; and/or

The CRC mask is the second CRC mask among the plurality of predetermined CRC masks, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementation manners, the transmission manner of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

Determining whether the first synchronization signal block is associated with control information includes:

The scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences, and it is determined that the first synchronization signal block is associated with the control information; and/or

The scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences, and it is determined that the first synchronization signal block is not associated with the control information.

The terminal device determines whether the synchronization signal block is associated with control information according to the above-mentioned corresponding transmission mode. When the synchronization signal block is not associated with control information, it does not need to continue to blindly detect the physical broadcast channel, which can reduce the detection complexity of the terminal device and reduce the terminal device. Power consumption and latency.

In some possible implementations, the physical broadcast channel carries second indication information, and the second indication information indicates whether the first synchronization signal block is associated with the control information

The method also includes:

According to the second indication information, it is determined whether the first synchronization signal block is associated with the control information.

In some possible implementations, the physical broadcast channel carries third indication information, and the third indication information indicates whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal identifier of the second synchronization signal block;

The method also includes:

According to the third indication information, it is determined whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal identifier of the second synchronization signal block.

In some possible implementations, the physical broadcast channel carries fourth indication information, where the fourth indication information indicates a synchronization signal identifier of the second synchronization signal block;

The method also includes:

According to the fourth indication information, the synchronization signal identifier of the second synchronization signal block is determined.

By using the fourth indication information, the detection complexity of the terminal device can be further reduced.

In conjunction with the first aspect or the second aspect or any of their possible implementations,

In some possible implementations, the first indication information is carried in a reserved field of the physical broadcast channel.

The first indication information can be carried in the reserved field, which has no effect on other fields, and changes little to the physical broadcast channel.

In some possible implementations, the physical broadcast channel includes a three-part field, where,

The first field is only valid when the first synchronization signal block is associated with the control information;

The second field is only valid when the first synchronization signal block is not associated with the control information, and the second field carries the first indication information;

The third field is valid when the first sync block is associated with or not associated with the control information.

In some possible implementations, the bits occupied by the first field and the second field on the physical broadcast channel partially or completely overlap.

The above solution can provide enough information bits to indicate the resource location of the second synchronization signal block.

In some possible implementations, the resource position is an absolute position of the second synchronization signal block in the bandwidth or a relative position relative to the first synchronization signal block.

In some possible implementations, the first indication information may indicate a frequency offset value between the second synchronization signal block and the first synchronization signal block, or the first indication information may indicate that the second synchronization signal block is in the current carrier The frequency location of the PRB.

In some possible implementations, the resource location may include: a time domain location, or a frequency domain location, or a time-frequency location.

In a third aspect, a communication method is provided, including:

determining a transmission mode of the first synchronization signal block, wherein the transmission mode indicates whether the first synchronization signal block is associated with control information;

The first synchronization signal block is sent according to the transmission method.

The technical solutions of the embodiments of the present invention indicate to the receiving side whether the synchronization signal block is associated with control information through the transmission mode of the synchronization signal block, so that the terminal device on the receiving side only needs to detect the transmission mode of the synchronization signal block to determine the synchronization signal block. Whether the synchronization signal block is associated with control information, it is not necessary to blindly detect the physical broadcast channel, so that the detection complexity of the terminal device can be reduced, and the power consumption and time delay of the terminal device can be reduced.

In some possible implementations, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

The determining of the transmission mode of the first synchronization signal block includes:

The first synchronization signal block is associated with the control information, and it is determined that the mapping mode is a first mapping mode among multiple predetermined mapping modes; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the mapping mode is the second mapping mode among the plurality of predetermined mapping modes.

In some possible implementations, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on the transmission symbols of the first synchronization signal block;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information, and the value of the orthogonal cover code is determined to be a first value among multiple predetermined values; and/or

The first synchronization signal block is not associated with the control information, and the value of the orthogonal cover code is determined to be the second value among the plurality of pre-valued values.

In some possible implementations, the transmission mode of the first synchronization signal block includes a range to which the synchronization signal identifier used by the first synchronization signal block belongs;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the first subset; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the second subset.

In some possible implementations, determining the transmission mode of the first synchronization signal block includes:

The first synchronization signal block is associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block, and/or the first synchronization signal block is not associated with the control information , determine that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value; or,

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value, and/or, the first synchronization signal block Without being associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block;

Wherein, the predetermined value is greater than the difference between the maximum value and the minimum value in the value range of the synchronization signal identifier of the first synchronization signal block.

In some possible implementations, the transmission mode of the first synchronization signal block includes a CRC mask used by the physical broadcast channel in the first synchronization signal block;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information, and the CRC mask is determined to be the first CRC mask among multiple predetermined CRC masks; and/or

The first synchronization signal block is not associated with the control information, and the CRC mask is determined to be the second CRC mask among the plurality of predetermined CRC masks.

In some possible implementation manners, the transmission manner of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

Determine the transmission mode of the first synchronization signal block, including:

The first synchronization signal block is associated with the control information to determine that the scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences.

By using the above various transmission modes to implicitly indicate whether the synchronization signal block is associated with control information, the terminal device on the receiving side can determine whether the synchronization signal block is associated with control information according to the corresponding transmission mode, and there is no associated control information in the synchronization signal block. When the information is received, there is no need to continue to blindly detect the physical broadcast channel, so that the detection complexity of the terminal device can be reduced, and the power consumption and time delay of the terminal device can be reduced.

In a fourth aspect, a communication method is provided, comprising:

receiving a first synchronization signal block;

According to the transmission mode of the first synchronization signal block, it is determined whether the first synchronization signal block is associated with control information.

The technical solution of the embodiment of the present invention only needs to detect the transmission mode of the synchronization signal block to determine whether the synchronization signal block is associated with control information, and does not need to blindly detect the physical broadcast channel, thereby reducing the detection complexity of the terminal device. Reduce power consumption and latency of terminal equipment.

In some possible implementations, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

Determining whether the first synchronization signal block is associated with control information includes:

The mapping manner is a first mapping manner among multiple predetermined mapping manners, and it is determined that the first synchronization signal block is associated with the control information; and/or

The mapping mode is the second mapping mode among the multiple predetermined mapping modes, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementations, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on the transmission symbols of the first synchronization signal block;

Determining whether the first synchronization signal block is associated with control information includes:

The value of the orthogonal cover code is a first value among multiple predetermined values, and it is determined that the first synchronization signal block is associated with the control information; and/or

The value of the orthogonal cover code is the second value among the plurality of pre-values, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementations, the transmission mode of the first synchronization signal block includes a range to which the synchronization signal identifier used by the first synchronization signal block belongs;

Determining whether the first synchronization signal block is associated with control information includes:

The synchronization signal identifier used by the first synchronization signal block belongs to the first subset, and it is determined that the first synchronization signal block is associated with the control information; and/or

The synchronization signal identifier used by the first synchronization signal block belongs to the second subset, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementations, the transmission mode of the first synchronization signal block includes a CRC mask used by the physical broadcast channel in the first synchronization signal block;

Determining whether the first synchronization signal block is associated with control information includes:

The CRC mask is a first CRC mask among multiple predetermined CRC masks, and it is determined that the first synchronization signal block is associated with the control information; and/or

The CRC mask is the second CRC mask among the plurality of predetermined CRC masks, and it is determined that the first synchronization signal block is not associated with the control information.

In some possible implementation manners, the transmission manner of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

Determining whether the first synchronization signal block is associated with control information includes:

The scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences, and it is determined that the first synchronization signal block is associated with the control information; and/or

The scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences, and it is determined that the first synchronization signal block is not associated with the control information.

The terminal device determines whether the synchronization signal block is associated with control information according to the above-mentioned corresponding transmission mode. When the synchronization signal block is not associated with control information, it does not need to continue to blindly detect the physical broadcast channel, which can reduce the detection complexity of the terminal device and reduce the terminal device. Power consumption and latency.

In some possible implementations, the method further includes:

When the first synchronization signal block is associated with the control information, the control information is received according to the first synchronization signal block.

In combination with any of the above aspects or any of its possible implementations,

In some possible implementations, for cellular and relay scenarios, the control information may be SI, such as RMSI, or OSI; for D2D scenarios, the control information may be control information for the sender to schedule the receiver to receive data.

In some possible implementations, for cellular and relay scenarios, the physical broadcast channel may be PBCH, and the synchronization signal identifier may be a physical cell identifier; for D2D scenarios, the physical broadcast channel may be PSBCH, and the synchronization signal identifier may be D2D Sync signal field identifier for the link.

In a fifth aspect, a communication device is provided, including a processor and a transceiver, which can execute the method in any of the above aspects or any possible implementation manners thereof.

In a sixth aspect, a communication device is provided, and the communication device has the function of realizing the actual behavior of the network device in the above method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In some possible implementations, the structure of the network device includes a processor and a transmitter, and the processor is configured to support the network device to perform the corresponding functions in the above method. The transmitter is used to support the communication between the network device and the terminal device, and send the information or instructions involved in the above method to the terminal device. The network device may also include a memory for coupling with the processor that holds program instructions and data necessary for the network device.

In a seventh aspect, a communication device is provided, and the communication device has the function of implementing the behavior of the terminal device in practice in the above method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In some possible implementations, the structure of the terminal device includes a processor and a transmitter, and the processor is configured to support the terminal device to perform the corresponding functions in the above method. The transmitter is used to support the communication between the terminal device and the network device or the terminal device, and to send the information or instructions involved in the above method. The terminal device may also include a memory for coupling with the processor, which holds program instructions and data necessary for the terminal device.

In an eighth aspect, a computer storage medium is provided, and program codes are stored in the computer storage medium, and the program codes can be used to instruct the execution of any one of the first to fourth aspects or any possible implementations thereof. method in .

In a ninth aspect, there is provided a computer program product comprising instructions, which, when run on a computer, cause the computer to execute the method in any one of the above-mentioned first to fourth aspects or any possible implementations thereof.

Description of drawings

FIG. 1 is a schematic diagram of a system to which an embodiment of the present invention is applied.

FIG. 2 is a schematic diagram of another system to which an embodiment of the present invention is applied.

FIG. 3 is a schematic diagram of a network architecture according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of a structure of a synchronization signal block according to an embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating that multiple SSBs are configured on one bandwidth according to an embodiment of the present invention.

FIG. 6 is a schematic flowchart of a communication method according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of a physical broadcast channel according to an embodiment of the present invention.

FIG. 8 is a schematic flowchart of a communication method according to another embodiment of the present invention.

FIG. 9 is a schematic diagram of a mapping manner according to an embodiment of the present invention.

10 and 11 are schematic diagrams of an OCC according to an embodiment of the present invention.

FIG. 12 is a schematic flowchart of a communication method according to still another embodiment of the present invention.

FIG. 13 is a schematic flowchart of a communication method according to still another embodiment of the present invention.

FIG. 14 is a schematic flowchart of a communication method according to still another embodiment of the present invention.

FIG. 15 is a schematic block diagram of a communication device according to an embodiment of the present invention.

FIG. 16 is a schematic block diagram of a communication device according to another embodiment of the present invention.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a system to which an embodiment of the present invention is applied. As shown in FIG. 1, the system 100 may include a network device 102 and terminal devices 104 and 106, wherein the network device and the terminal devices are connected by wireless. It should be understood that FIG. 1 only takes the system including one network device as an example for description, but the embodiment of the present invention is not limited to this. For example, the system may also include more network devices; similarly, the system may also include more terminals equipment. It should also be understood that the system may also be referred to as a network, which is not limited in this embodiment of the present invention.

FIG. 2 is a schematic diagram of another system to which an embodiment of the present invention is applied. As shown in FIG. 2, the system 200 may include terminal devices 204 and 206, wherein the terminal devices are connected through a device-to-device (Device to Device, D2D) link. It should be understood that FIG. 2 only takes the system including two terminal devices as an example for description, but the embodiment of the present invention is not limited to this, for example, the system may further include more terminal devices.

The communication device in the embodiment of the present invention may be a terminal device. Terminal equipment may also refer to User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The access terminal 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 wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or terminal devices in future evolved Public Land Mobile Network (PLMN) networks Wait.

As an example but not a limitation, in this embodiment of the present invention, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

The communication device in the embodiment of the present invention may be a network device. The network device may be a device for communicating with terminal devices, and the network device may be a base station (Base TransceiverStation, Global System of Mobile Communication, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). BTS), or a base station (NodeB, NB) in a Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, or an evolved base station (Evolutional base station) in a Long Term Evolution (Long Term Evolution, LTE) system Node B, eNB or eNodeB), it can also be a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, and future The network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc.

In addition, in this embodiment of the present invention, a network device provides services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device (for example, a base station) corresponds to a cell. The cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include: Metro cell, Micro cell, Pico cell (Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services. In addition, the cell may also be a hypercell (Hypercell).

FIG. 3 is a schematic diagram of a network architecture to which an embodiment of the present invention may be applied, and the schematic diagram of the network architecture may be a network architecture diagram of a New Radio Access (New Radio Access, NR) in a next-generation wireless communication system. In the schematic diagram of the network architecture, network equipment can be divided into a centralized unit (centralized unit, CU) and multiple transmission reception points (transmission reception point, TRP)/distributed unit (distributed unit, DU), that is, network equipment The bandwidth based unit (BBU) of the DU is reconstructed into DU and CU functional entities. It should be noted that the form and quantity of the centralized unit and the TRP/DU do not constitute limitations to the embodiments of the present invention. Although the forms of the centralized units corresponding to the network device 1 and the network device 2 shown in FIG. 2 are different, their respective functions are not affected. It can be understood that the centralized unit 1 and the TRP/DU within the range of the dotted line are the constituent elements of the network device 1, the centralized unit 2 and the TRP/DU within the range of the solid line are the constituent elements of the network device 2, and the network device 1 and The network device 2 is a network device (or referred to as a base station) involved in the NR system.

The CU can handle the functions of the wireless high-level protocol stack, such as the radio resource control (RRC) layer, the Packet Data Convergence Protocol (PDCP) layer, etc., and can even support some core network functions to sink to the connection layer. Network access, termed as edge computing network, can meet the higher requirements of future communication networks for emerging services such as video, online shopping, and virtual/augmented reality for network latency.

DUs can mainly handle physical layer functions and layer 2 functions with high real-time requirements. Considering the transmission resources of radio remote units (RRUs) and DUs, the physical layer functions of some DUs can be moved up to the RRUs. Miniaturization of RRU, even more aggressive DUs can be merged with RRU.

CU can be deployed in a centralized manner, while DU deployment depends on the actual network environment, core urban areas, high traffic density, small station spacing, and areas with limited computer room resources, such as universities, large performance venues, etc., DU can also be centralized. In areas where traffic is sparse and the distance between stations is large, such as suburban counties and mountainous areas, DUs can be deployed in a distributed manner.

The S1-C interface exemplified in FIG. 3 may be a standard interface between the network device and the core network, and the specific device connected to the S1-C is not shown in FIG. 3 .

FIG. 4 is a schematic diagram showing the structure of a synchronization signal block according to an embodiment of the present invention. It should be understood that FIG. 4 is only an example, and does not constitute a limitation to the embodiment of the present invention.

As shown in FIG. 4 , a synchronization signal, including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS), and a physical broadcast channel (PhysicalBroadcast Channel, PBCH) may form an SSB together, that is, NR Primary Synchronization Signal (NR-PSS), NR Secondary Synchronization Signal (NR-SSS) and NR Physical Broadcast Channel (NR-PBCH) are transmitted in one SSB. For brevity, the NR-PSS, NR-SSS and NR-PBCH in the synchronization signal block may be abbreviated as PSS, SSS and PBCH, respectively.

In addition, multiple SSBs can form a synchronization signal burst set (SS burst set), and the SS burst set is sent periodically. That is to say, the network device sends SSBs in a periodic SS burst set sending method, and each SS burst set includes multiple SSBs.

It should be understood that the names of the synchronization signal block and the synchronization signal pulse set are not limited in this embodiment of the present invention, that is, they may also be expressed as other names. For example, SSB can also be expressed as SS/PBCH block.

FIG. 5 shows a schematic diagram of configuring multiple SSBs on one bandwidth. It should be understood that FIG. 5 is only an example, and does not constitute a limitation to the embodiment of the present invention.

As shown in Figure 5, among the 3 SSBs on one bandwidth, SSB3 is associated with RMSI, and SSB1 and SSB2 are not associated with RMSI. In the absence of any information, the terminal equipment needs to perform synchronization search and RMSI detection on the frequency points of the synchronization frequencies where each SSB1, SSB2 and SSB3 are located. When detecting that there is no RMSI associated with the current SSB, the terminal device will detect the next candidate synchronization frequency point in sequence. This will greatly increase the detection complexity of the terminal equipment and the network access delay.

In view of this, the embodiments of the present invention provide a technical solution, which can reduce blind detection of terminal equipment, reduce detection complexity of terminal equipment, and reduce power consumption and time delay of terminal equipment.

It should be understood that the above RMSI can also be transformed into other control information. In addition, the technical solutions of the embodiments of the present invention can be applied to D2D scenarios in addition to cellular and relay scenarios. In this embodiment of the present invention, control information is used as an example for description. For cellular and relay scenarios, the control information may be system information (system information, SI), such as RMSI, or other system information (other system information, OSI). For a D2D scenario, the control information is the control information for the sender to schedule the receiver to receive data. However, this embodiment of the present invention is not limited thereto.

It should also be understood that, for cellular and relay scenarios, the physical broadcast channel in the embodiment of the present invention may be a PBCH, and the synchronization signal identifier may be a physical cell identifier. For a D2D scenario, the physical broadcast channel in the embodiment of the present invention may be a physical sidelink broadcast channel (Physical Sidelink Broadcast Channel, PSBCH), and the synchronization signal identifier may be the synchronization signal area identifier of the D2D link. However, this embodiment of the present invention is not limited thereto.

It should also be understood that the association of the SSB with the control information may include, but is not limited to, the following ways:

Manner 1: The association indicates that there is control information being sent on the same time domain resource as that of the SSB or on the subsequent time domain resource of the SSB in a manner specified in the protocol or in a predefined manner. This subsequent time domain resource has a certain time corresponding relationship with the SSB. For example: adjacent to SSB, or separated by a certain period of time.

Manner 2: The association is resource configuration information indicating the control information associated with the terminal device through the physical broadcast channel in the SSB. For example, the location of the resource pool of the control information, or the configuration of the indication information of the control information, etc.

FIG. 6 shows a schematic flowchart of a communication method according to an embodiment of the present invention. The first device in FIG. 6 is a sending device, such as the network device or terminal device described above; the second device is a receiving device, such as the terminal device described above.

610. The first device determines first indication information, where the first indication information indicates a resource location of a second synchronization signal block, and the second synchronization signal block is associated with control information.

In this embodiment of the present invention, when sending a synchronization signal block (represented as the first synchronization signal block), the first device will determine the resource location of the synchronization signal block (represented as the second synchronization signal block) associated with the control information, and then The resource location of the second synchronization signal block is indicated to the second device in the first synchronization signal block.

It should be understood that the resource location may include: time domain location, or frequency domain location or time-frequency location. For example, when the first indication information indicates the time domain position, it indicates that the second synchronization signal block and the first synchronization signal block may not be in the same time slot. The following describes the location in the frequency domain as an example, but this is not limited in this embodiment of the present invention.

Optionally, the resource position of the second synchronization signal block may be an absolute position of the second synchronization signal block in the bandwidth or a relative position relative to the first synchronization signal block.

For example, the first indication information may indicate a frequency offset value between the second synchronization signal block and the first synchronization signal block, or the first indication information may indicate a physical resource block (Physical Resource Block) of the second synchronization signal block in the current carrier Block, PRB) frequency location.

It should be understood that the second synchronization signal block may be the same as the first synchronization signal block, that is, the case is that the control information is associated with the first synchronization signal block. Correspondingly, in this case, the relative deviation value of the time domain resource or frequency domain resource indicated by the first indication information is 0, or the indicated absolute position in the bandwidth is the position of the first synchronization signal block.

Optionally, the first device may determine the first indication information when the first synchronization signal block is not associated with the control information.

That is to say, the control information is associated with the first synchronization signal block, and the first indication information may not be required. When the first synchronization signal block is not associated with the control information, the first device configures the first indication information.

620. The first device sends a first synchronization signal block, where the physical broadcast channel in the first synchronization signal block carries the first indication information.

The first device carries the first indication information in the physical broadcast channel in the first synchronization signal block and sends it to the second device.

Optionally, in an embodiment of the present invention, the first indication information may be carried in a reserved field of the physical broadcast channel.

The first indication information can be carried in the reserved field, which has no effect on other fields, and changes little to the physical broadcast channel.

Optionally, in an embodiment of the present invention, the physical broadcast channel can be reset. For example, the physical broadcast channel may include a three-part field, where,

The first field is only valid when the first synchronization signal block is associated with the control information;

The second field is only valid when the first synchronization signal block is not associated with the control information, and the second field carries the first indication information;

The third field is valid when the first sync block is associated with or not associated with the control information.

Optionally, the bits occupied by the first field and the second field on the physical broadcast channel partially or completely overlap.

For example, as shown in Figure 7, field 1 and field 2 are valid when SSB is associated with or not associated with control information, and are the above-mentioned third fields; fields 3-6 are valid when SSB is associated with control information, and are the above-mentioned first fields; fields 3' and field 4' are valid when the SSB is not associated with control information, and are the above-mentioned second fields, and the first indication information may be carried in field 3' and field 4'.

That is to say, when the current SSB is not associated with control information, except for some fields that must be used in the measurement, other fields in the physical broadcast channel field will be invalid. After other fields are invalid, the remaining bits can be reconfigured. is a new field used to carry the first indication information.

Taking the PBCH as an example, when the SSB is not associated with control information, in addition to the hyper frame number (HFN) and the SSB time index (SSB time index), other original fields in the PBCH, such as "RMSI control resource", "synchronization The "subcarrier offset value" and "system frame number (SFN)" of the signal in the PRB will be invalid, and the PBCH bits reserved in the invalid field can be used to carry the first indication information.

The above solution can provide enough information bits to indicate the resource location of the second synchronization signal block.

For an orthogonal frequency division multiplexing (OFDM) system that performs 8192-point Fast Fourier Transformation (FFT), it is assumed that one PRB occupies 12 subcarriers, and there are at most 8192/12=682 PRB. The 682 PRBs can indicate the PRB frequency positions of all the SSBs associated with the RMSI using a maximum of 10 bits (indicating a maximum of 1024 values).

Optionally, in an embodiment of the present invention, the physical broadcast channel further carries third indication information, where the third indication information indicates whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal of the second synchronization signal block. Identifies the same.

Specifically, in some possible designs, the synchronization signal identifier of the first synchronization signal block and the synchronization signal identifier of the second synchronization signal block may be different. In this case, whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal identifier of the second synchronization signal block may be indicated by carrying the third indication information in the physical broadcast channel.

Optionally, in an embodiment of the present invention, the physical broadcast channel further carries fourth indication information, where the fourth indication information indicates a synchronization signal identifier of the second synchronization signal block.

Specifically, in addition to indicating the resource location of the second synchronization signal block, the synchronization signal identifier of the second synchronization signal block may also be indicated by carrying fourth indication information in the physical broadcast channel. For example, when the synchronization signal identifier of the first synchronization signal block is different from the synchronization signal identifier of the second synchronization signal block, indicating the synchronization signal identifier of the second synchronization signal block through the physical broadcast channel can further reduce the second synchronization signal block. The detection complexity of the device.

Using the above technical solution, after detecting the first synchronization signal block, the second device can directly know the resource location of the second synchronization signal block, so that it can directly switch to the corresponding resource location for searching without performing blind detection. Therefore, the detection complexity of the second device can be reduced, and the search calculation time, power consumption and time delay of the second device can be reduced.

Optionally, the first device may further indicate to the second device whether the first synchronization signal block is associated with the control information.

The manner in which the first device indicates to the second device whether the first synchronization signal block is associated with the control information may be an explicit manner, for example, through a corresponding bit indication; or an implicit manner, for example, through the first synchronization signal block. The transmission mode indication of a synchronization signal block will be described separately below.

Optionally, in an embodiment of the present invention, the physical broadcast channel further carries second indication information, where the second indication information indicates whether the first synchronization signal block is associated with the control information.

This embodiment is the way of explicit indication. For example, the second indication information may be carried by a bit in the physical broadcast channel, indicating whether the first synchronization signal block is associated with the control information.

Optionally, in an embodiment of the present invention, the first device may further determine a transmission mode of the first synchronization signal block, where the transmission mode indicates whether the first synchronization signal block is associated with the control information; according to the transmission mode to send the first synchronization signal block.

This embodiment is a way of implicit indication. The first device respectively indicates that the first synchronization signal block is associated with the control information or the first synchronization signal block is not associated with the control information through different transmission modes of the first synchronization signal block.

For example, the first device may execute the process shown in FIG. 8 . In 801, it is determined whether the synchronization signal block is associated with control information, if yes, go to 802, use transmission mode 1 to send the synchronization signal block, if not, execute 803, use transmission mode two to send the synchronization signal block.

Optionally, the transmission mode may include a mapping mode of the synchronization signal sequence in the frequency domain, an orthogonal coverage code (Orthogonal Coverage Code, OCC), a synchronization signal identifier, and a cyclic redundancy check (Cyclic Redundancy Check, CRC) of the physical broadcast channel. ) mask or scrambling of the physical broadcast channel, etc., which are respectively described below, but are not limited in this embodiment of the present invention.

Optionally, in an embodiment of the present invention, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

The first device may:

When the control information is associated with the first synchronization signal block, determine that the mapping manner is a first mapping manner among multiple predetermined mapping manners; and/or

When the first synchronization signal block is not associated with the control information, it is determined that the mapping manner is the second mapping manner among the plurality of predetermined mapping manners.

Specifically, the first device can determine the mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain according to whether the first synchronization signal block is associated with the control information, and for association or non-association, respectively adopt different mapping methods.

For example, the sequence of SSS or PSS can use two mapping methods as shown in Figure 9, the sequence of SSS or PSS is mapped from low frequency to high frequency into one mapping method, which can be associated with control information corresponding to SSB; the sequence of SSS or PSS Mapping from high frequency to low frequency is another mapping method, which can correspond to SSB without associated control information, and vice versa.

Optionally, in an embodiment of the present invention, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on a transmission symbol of the first synchronization signal block;

The first device may:

When the control information is associated with the first synchronization signal block, determining that the value of the orthogonal cover code is a first value among multiple predetermined values; and/or

When the first synchronization signal block is not associated with the control information, it is determined that the value of the orthogonal cover code is the second value among the plurality of preselected values.

Specifically, the first device may determine the value of the orthogonal cover code modulated on the transmission symbol of the first synchronization signal block according to whether the first synchronization signal block is associated with the control information, for association or non-association, Different values of orthogonal cover codes are respectively adopted.

For example, the values of different orthogonal cover codes as shown in FIG. 10 may be used to respectively indicate that the first synchronization signal block is associated with the control information or the first synchronization signal block is not associated with the control information; or the values shown in FIG. 11 may be used. The shown values of the different orthogonal cover codes respectively indicate that the first synchronization signal block is associated with the control information or the first synchronization signal block is not associated with the control information. In Figure 10, OCC is modulated on 2 PBCH symbols, and in Figure 11, it is modulated on 4 symbols of PSS, PBCH, SSS and PBCH, where "+" means multiply the data or symbols on all subcarriers by +1 , "-" means multiply the data or symbols on all sub-carriers by "-1".

Optionally, in an embodiment of the present invention, the transmission mode of the first synchronization signal block includes a range to which a synchronization signal identifier used by the first synchronization signal block belongs;

The first device may:

When the control information is associated with the first synchronization signal block, it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the first subset; and/or

When the first synchronization signal block is not associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the second subset.

Specifically, in this embodiment, two subsets of synchronization signal identifiers may be set, corresponding to associated control information or unassociated control information, respectively. For example, the first subset may be a set of synchronization signal identifiers (ie, actual synchronization signal identifiers) of the synchronization signal block, and the second subset may be a synchronization signal identifier obtained by adding a predetermined value to the synchronization signal identifiers in the first subset , wherein the predetermined value is greater than the difference between the maximum value and the minimum value in the first subset.

For example, if the actual set of synchronization signal identifiers is {0~503}, the first subset may be {0~503}, and the second subset may be {504~1007}; if the actual set of synchronization signal identifiers is {0-1007}, the first subset may be {0-1007}, and the second subset may be {1008-2015}.

The synchronization signal identifier used by the first synchronization signal block may belong to the above-mentioned first subset, that is, the synchronization signal identifier of the first synchronization signal block (ie, the actual synchronization signal identifier) is used, or it may belong to the above-mentioned second subset, that is The sum of the synchronization signal identification (ie, the actual synchronization signal identification) of the first synchronization signal block and a predetermined value is used. The above two situations may correspond to associated control information or unassociated control information, respectively.

That is, the first device can:

When the first synchronization signal block is associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block, and/or the first synchronization signal block is not associated In the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value; or,

When the first synchronization signal block is associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value, and/or, in the first synchronization signal block When the synchronization signal block is not associated with the control information, determine that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block;

Wherein, the predetermined value is greater than the difference between the maximum value and the minimum value in the value range of the synchronization signal identifier of the first synchronization signal block.

In the case where the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value, the second device may identify the detected synchronization signal identifier used by the first synchronization signal block After subtracting the predetermined value, the synchronization signal identifier of the first synchronization signal block is obtained, so that the neighbor cell measurement of the initial search of the second device will not be affected.

For example, if the value range of the actual synchronization signal identifier is {0-503}, the two subsets may be {0-503} and {504-1007} respectively. Assuming that the synchronization signal identifier of the first synchronization signal block is 1, when the first synchronization signal block is associated with the control information, 1 can be used; when the first synchronization signal block is not associated with the control information, 505 can be used, and the first synchronization signal block can be used. The second device can obtain the actual synchronization signal ID 1 by subtracting it from the predetermined value (504), and vice versa. If the value range of the actual synchronization signal identifier is {0 to 1007}, the two subsets may be {0 to 1007} and {1008 to 2015} respectively. Assuming that the synchronization signal identifier of the first synchronization signal block is 1, when the first synchronization signal block is associated with the control information, 1 can be used; when the first synchronization signal block is not associated with the control information, 1009 can be used, and the first synchronization signal block can be used. The second device can obtain the actual synchronization signal ID 1 by subtracting it from the predetermined value (1008), and vice versa.

Optionally, in an embodiment of the present invention, the transmission mode of the first synchronization signal block includes a CRC mask used by a physical broadcast channel in the first synchronization signal block;

The first device may:

When the first synchronization signal block is associated with the control information, determining that the CRC mask is the first CRC mask among a plurality of predetermined CRC masks; and/or

When the first synchronization signal block is not associated with the control information, the CRC mask is determined to be the second CRC mask among the plurality of predetermined CRC masks.

Specifically, the first device may determine the CRC mask used by the physical broadcast channel in the first synchronization signal block according to whether the first synchronization signal block is associated with the control information, and use different CRC masks for association or non-association respectively. CRC mask.

For example, when the CRC length of the physical broadcast channel is 16 bits, two different CRC masks "0000000000000000" and "0000000011111111" can be used to indicate association or non-association.

The process of adding a CRC mask is as follows:

yc(n)=(xc(n)+sc(n))mod 2,n=0,1,..,N-1

Among them, N is the check digit of the CRC, xc represents the original CRC check digit, sc is the mask of the same length as the CRC, and yc is the check digit after adding the CRC.

Optionally, in an embodiment of the present invention, the transmission mode of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

The first device may:

When the control information is associated with the first synchronization signal block, determining that the scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences; and/or

When the first synchronization signal block is not associated with the control information, it is determined that the scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences.

Specifically, the first device may determine the scrambling sequence used by the physical broadcast channel in the first synchronization signal block according to whether the first synchronization signal block is associated with the control information, and use different scrambling sequences for association or non-association respectively. scrambling sequence.

For example, corresponding scrambling may be performed on the information or coded bits of the physical broadcast channel before or after coding. Use different sequences to correspond to different states (associated or not). The process of scrambling can be as follows:

y(n)=(x(n)+s(n))mod 2,n=0,1,..,L-1

Wherein, L is the information or coded bit length of the physical broadcast channel, x represents the information or coded bits of the physical broadcast channel before scrambling, s is the scrambling sequence, and y is the information or coded bits of the physical broadcast channel after scramble. Generate different s according to different states. Different states may correspond to different scrambling sequences, and may also correspond to different initial values of scrambling sequences.

With the above technical solution, the second device only needs to detect the actual transmission mode of the first synchronization signal block, so as to determine whether the first synchronization signal block is associated with control information, and does not need to blindly detect the physical broadcast channel, thereby reducing the number of first synchronization signal blocks. The detection complexity of the second device reduces the power consumption and delay of the second device.

630. The second device acquires the first indication information carried by the physical broadcast channel in the first synchronization signal block.

On the receiving side, the second device receives the first synchronization signal block and obtains the first indication information therein, so as to directly know the resource location of the second synchronization signal block.

Optionally, the second device may first determine whether the first synchronization signal block is associated with the control information. When it is determined that the first synchronization signal block is not associated with control information, the first indication information carried by the physical broadcast channel in the first synchronization signal block is acquired. When it is determined that the first synchronization signal block is associated with the control information, the control information is received according to the first synchronization signal block.

Corresponding to the manner in which the first device indicates whether the first synchronization signal block is associated with the control information, the second device may determine whether the first synchronization signal block is associated with the control information in a corresponding manner.

Optionally, when the physical broadcast channel carries the second indication information, the second device may determine whether the first synchronization signal block is associated with the control information according to the second indication information.

Optionally, when the transmission mode of the first synchronization signal block indicates whether the first synchronization signal block is associated with the control information, the second device may determine the first synchronization signal block according to the transmission mode of the first synchronization signal block Whether to associate this control information.

Optionally, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

The second device can:

When the mapping manner is a first mapping manner among multiple predetermined mapping manners, determining that the first synchronization signal block is associated with the control information; and/or

When the mapping manner is the second mapping manner among the plurality of predetermined mapping manners, it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on a transmission symbol of the first synchronization signal block;

The second device can:

When the value of the orthogonal cover code is a first value among multiple predetermined values, determine that the first synchronization signal block is associated with the control information; and/or

When the value of the orthogonal cover code is the second value among the plurality of preselected values, it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a range to which the synchronization signal identifier used by the first synchronization signal block belongs;

The second device can:

When the synchronization signal identifier used by the first synchronization signal block belongs to the first subset, determine that the first synchronization signal block is associated with the control information; and/or

When the synchronization signal identifier used by the first synchronization signal block belongs to the second subset, it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a CRC mask used by the physical broadcast channel in the first synchronization signal block;

The second device can:

when the CRC mask is a first CRC mask among multiple predetermined CRC masks, determining that the first synchronization signal block is associated with the control information; and/or

When the CRC mask is the second CRC mask among the plurality of predetermined CRC masks, it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

The second device can:

When the scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences, determining that the first synchronization signal block is associated with the control information; and/or

When the scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences, it is determined that the first synchronization signal block is not associated with the control information.

Optionally, when the physical broadcast channel carries the third indication information; the second device may determine, according to the third indication information, whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal of the second synchronization signal block Identifies the same.

Optionally, the physical broadcast channel carries the fourth indication information, where the fourth indication information indicates the synchronization signal identifier of the second synchronization signal block; the second device may determine the second synchronization signal according to the fourth indication information Sync signal identifier for the block.

640. The second device receives the control information according to the first indication information.

The second device learns the resource location of the second synchronization signal block through the first indication information, directly searches the corresponding resource location, and receives the control information.

For example, the second device may execute the process shown in FIG. 12 . In 1201, the synchronization signal block is detected, and the transmission mode of the synchronization signal block is determined. In 1202, it is determined whether the synchronization signal block is associated with control information according to the transmission mode of the synchronization signal block. If yes, then execute 1203 to receive the associated control information, If not, go to 1204 to obtain the first indication information, and receive the control information according to the first indication information.

In the technical solution of the embodiment of the present invention, by indicating the resource location of the synchronization signal block associated with the control information to the receiving side, the terminal device on the receiving side can directly know the resource location of the synchronization signal block, so that no blind detection is required, and the Switching to the corresponding resource location for searching can reduce the detection complexity of the terminal equipment, and reduce the search calculation time, power consumption and delay of the terminal equipment.

In addition, the technical solutions of the embodiments of the present invention indicate to the receiving side whether the synchronization signal block is associated with control information through the transmission mode of the synchronization signal block, so that the terminal device on the receiving side only needs to detect the transmission mode of the synchronization signal block. Determining whether the synchronization signal block is associated with control information does not require blind detection of the physical broadcast channel, thereby reducing the detection complexity of the terminal device and reducing the power consumption and time delay of the terminal device.

It should be understood that various implementations of the embodiments of the present invention may be implemented independently or in combination, which are not limited in the embodiments of the present invention.

For example, in the embodiments of the present invention, the implementation of indicating the resource location of the synchronization signal block associated with the control information to the receiving side and the implementation of indicating to the receiving side whether the synchronization signal block is associated with control information through the transmission method of the synchronization signal block can be separately implementation, or a combination of implementations. The following describes an implementation manner of indicating to the receiving side whether the synchronization signal block is associated with control information through the transmission mode of the synchronization signal block. It should be understood that, in addition to the following descriptions, the following embodiments may also refer to the relevant descriptions in the foregoing embodiments, which will not be repeated below for brevity.

FIG. 13 shows a schematic flowchart of a communication method according to another embodiment of the present invention.

1310. The first device determines a transmission mode of the first synchronization signal block, where the transmission mode indicates whether the first synchronization signal block is associated with control information.

The first device determines the transmission mode of the first synchronization signal block according to whether the first synchronization signal block is associated with the control information. The transmission mode may include a mapping mode of the synchronization signal sequence in the frequency domain, an orthogonal cover code, a synchronization signal identification, a CRC mask of the physical broadcast channel, or scrambling of the physical broadcast channel, and the like. For the specific description of each transmission mode, reference may be made to the corresponding descriptions in the foregoing embodiments, which are not repeated for brevity.

1320. The first device sends the first synchronization signal block according to the transmission mode.

Corresponding to different situations of whether the first synchronization signal block is associated with the control information, the first device sends the first synchronization signal block according to the corresponding transmission mode, and implicitly indicates that the first synchronization signal block is associated with the control information or the first synchronization signal block. The sync block is not associated with this control information.

1330. The second device determines, according to the transmission mode of the first synchronization signal block, whether the first synchronization signal block is associated with control information.

The second device receives the first synchronization signal block, and determines whether the first synchronization signal block is associated with the control information according to the transmission mode of the first synchronization signal block. For the specific description of each transmission mode, reference may be made to the corresponding descriptions in the foregoing embodiments, which are not repeated for brevity.

When the second device determines that the first synchronization signal block is not associated with the control information according to the transmission mode of the first synchronization signal block, it does not need to blindly detect the physical broadcast channel, and can exit the detection of the first synchronization signal block, and then go to Detect other sync blocks.

When the first synchronization signal block is associated with the control information, the second device may receive the control information according to the first synchronization signal block.

For example, the second device may execute the process shown in FIG. 14 . In 1401, the synchronization signal block is detected, and the transmission mode of the synchronization signal block is determined. In 1402, it is determined whether the synchronization signal block is associated with control information according to the transmission mode of the synchronization signal block. If yes, then execute 1403 to receive the associated control information, If not, execute 1404, exit the detection of the synchronization signal block, and detect other synchronization signal blocks.

The technical solutions of the embodiments of the present invention indicate to the receiving side whether the synchronization signal block is associated with control information through the transmission mode of the synchronization signal block, so that the terminal device on the receiving side only needs to detect the transmission mode of the synchronization signal block to determine the synchronization signal block. Whether the synchronization signal block is associated with control information, it is not necessary to blindly detect the physical broadcast channel, so that the detection complexity of the terminal device can be reduced, and the power consumption and time delay of the terminal device can be reduced.

It should be understood that the specific examples in the embodiments of the present invention are only for helping those skilled in the art to better understand the embodiments of the present invention, rather than limiting the scope of the embodiments of the present invention.

It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, rather than the embodiments of the present invention. implementation constitutes any limitation.

The communication method according to the embodiment of the present invention is described in detail above, and the communication device according to the embodiment of the present invention will be described below.

FIG. 15 is a schematic diagram of a communication device according to an embodiment of the present invention. The communication device may correspond to the first device in each method embodiment, and may have any function of the first device in the method.

As shown in FIG. 15 , the communication device includes a processor 1510 and a transceiver 1520 .

Optionally, the transceiver 1520 may be referred to as a remote radio unit (remote radio unit, RRU), a transceiver unit, a transceiver, or a transceiver circuit or the like. The transceiver 1520 may include at least one antenna and a radio frequency unit, and the transceiver 1520 may be used for transmitting and receiving radio frequency signals and converting radio frequency signals to baseband signals.

Optionally, the communication device may include a baseband unit (BBU), and the baseband unit includes the processor 1510 . The baseband unit can be used to perform baseband processing, such as channel coding, multiplexing, modulation, spreading, etc., and to control network equipment. The transceiver 1520 and the baseband unit may be physically set together, or may be physically separated, that is, a distributed network device.

In an example, the baseband unit may be composed of one or more boards, and the multiple boards may jointly support a radio access network of a single access standard, or may respectively support a radio access network of different access standards.

In one example, the baseband unit may be reconfigured into the aforementioned DU and CU functional entities.

The baseband unit includes a processor 1510 . The processor 1510 may be configured to control the communication device to perform corresponding operations in the foregoing method embodiments. Optionally, the baseband unit may further include a memory for storing necessary instructions and data.

In one embodiment, the processor 1510 is configured to determine first indication information, where the first indication information indicates a resource location of a second synchronization signal block, and the second synchronization signal block is associated with control information;

The transceiver 1520 is configured to send a first synchronization signal block, wherein the physical broadcast channel in the first synchronization signal block carries the first indication information determined by the processor 1510 .

Optionally, the processor 1510 is specifically configured to determine the first indication information when the first synchronization signal block is not associated with the control information.

Optionally, the processor 1510 is further configured to determine a transmission mode of the first synchronization signal block, wherein the transmission mode indicates whether the first synchronization signal block is associated with the control information;

The transceiver 1520 is specifically configured to send the first synchronization signal block according to the transmission mode.

Optionally, the processor 1510 is specifically configured to: when the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

The first synchronization signal block is associated with the control information, and it is determined that the mapping mode is a first mapping mode among multiple predetermined mapping modes; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the mapping mode is the second mapping mode among the plurality of predetermined mapping modes.

Optionally, the processor 1510 is specifically configured to: when the transmission mode of the first synchronization signal block includes the value of the orthogonal cover code modulated on the transmission symbol of the first synchronization signal block;

The first synchronization signal block is associated with the control information, and the value of the orthogonal cover code is determined to be a first value among multiple predetermined values; and/or

The first synchronization signal block is not associated with the control information, and the value of the orthogonal cover code is determined to be the second value among the plurality of pre-valued values.

Optionally, the processor 1510 is specifically configured to: when the transmission mode of the first synchronization signal block includes the range to which the synchronization signal identifier used by the first synchronization signal block belongs;

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the first subset; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the second subset.

Optionally, the processor 1510 is specifically used for:

The first synchronization signal block is associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block, and/or the first synchronization signal block is not associated with the control information , determine that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value; or,

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value, and/or, the first synchronization signal block Without being associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block;

Wherein, the predetermined value is greater than the difference between the maximum value and the minimum value in the value range of the synchronization signal identifier of the first synchronization signal block.

Optionally, the processor 1510 is specifically configured to: when the transmission mode of the first synchronization signal block includes a cyclic redundancy check CRC mask used by the physical broadcast channel in the first synchronization signal block;

The first synchronization signal block is associated with the control information, and the CRC mask is determined to be the first CRC mask among a plurality of predetermined CRC masks; and/or

The first synchronization signal block is not associated with the control information, and the CRC mask is determined to be the second CRC mask among the plurality of predetermined CRC masks.

Optionally, the processor 1510 is specifically configured to: when the transmission mode of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

The first synchronization signal block is associated with the control information to determine that the scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences.

Optionally, the physical broadcast channel further carries second indication information, where the second indication information indicates whether the first synchronization signal block is associated with the control information.

Optionally, the first indication information is carried in a reserved field of the physical broadcast channel.

Optionally, the physical broadcast channel includes a three-part field, wherein,

The first field is only valid when the first synchronization signal block is associated with the control information;

The second field is only valid when the first synchronization signal block is not associated with the control information, and the second field carries the first indication information;

The third field is valid when the first sync block is associated with or not associated with the control information.

Optionally, the bits occupied by the first field and the second field on the physical broadcast channel partially or completely overlap.

Optionally, the physical broadcast channel further carries third indication information, where the third indication information indicates whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal identifier of the second synchronization signal block.

Optionally, the physical broadcast channel further carries fourth indication information, where the fourth indication information indicates a synchronization signal identifier of the second synchronization signal block.

Optionally, the resource position is an absolute position in the bandwidth of the second synchronization signal block or a relative position relative to the first synchronization signal block.

In another embodiment, the processor 1510 is configured to determine a transmission mode of the first synchronization signal block, wherein the transmission mode indicates whether the first synchronization signal block is associated with control information;

The transceiver 1520 is configured to send the first synchronization signal block according to the transmission mode.

Optionally, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

The processor 1510 is specifically used for:

The first synchronization signal block is associated with the control information, and it is determined that the mapping mode is a first mapping mode among multiple predetermined mapping modes; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the mapping mode is the second mapping mode among the plurality of predetermined mapping modes.

Optionally, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on a transmission symbol of the first synchronization signal block;

The processor 1510 is specifically used for:

The first synchronization signal block is associated with the control information, and the value of the orthogonal cover code is determined to be a first value among multiple predetermined values; and/or

The first synchronization signal block is not associated with the control information, and the value of the orthogonal cover code is determined to be the second value among the plurality of pre-valued values.

Optionally, the transmission mode of the first synchronization signal block includes a range to which the synchronization signal identifier used by the first synchronization signal block belongs;

The processor 1510 is specifically used for:

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the first subset; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block belongs to the second subset.

Optionally, the processor 1510 is specifically used for:

The first synchronization signal block is associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block, and/or the first synchronization signal block is not associated with the control information , determine that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value; or,

The first synchronization signal block is associated with the control information, and it is determined that the synchronization signal identifier used by the first synchronization signal block is the sum of the synchronization signal identifier of the first synchronization signal block and a predetermined value, and/or, the first synchronization signal block Without being associated with the control information, it is determined that the synchronization signal identifier used by the first synchronization signal block is the synchronization signal identifier of the first synchronization signal block;

Wherein, the predetermined value is greater than the difference between the maximum value and the minimum value in the value range of the synchronization signal identifier of the first synchronization signal block.

Optionally, the transmission mode of the first synchronization signal block includes a CRC mask used by the physical broadcast channel in the first synchronization signal block;

The processor 1510 is specifically used for:

The first synchronization signal block is associated with the control information, and the CRC mask is determined to be the first CRC mask among multiple predetermined CRC masks; and/or

The first synchronization signal block is not associated with the control information, and the CRC mask is determined to be the second CRC mask among the plurality of predetermined CRC masks.

Optionally, the transmission mode of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

The processor 1510 is specifically used for:

The first synchronization signal block is associated with the control information to determine that the scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences; and/or

The first synchronization signal block is not associated with the control information, and it is determined that the scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences.

FIG. 16 is a schematic diagram of a communication device according to another embodiment of the present invention. The communication device may correspond to the second device in each method embodiment, and may have any function of the second device in the method.

As shown in FIG. 16 , the communication device includes a processor 1610 and a transceiver 1620 .

Optionally, the transceiver 1620 may include a control circuit and an antenna, wherein the control circuit may be used for converting baseband signals to radio frequency signals and processing the radio frequency signals, and the antenna may be used for transmitting and receiving radio frequency signals.

Optionally, the communication device may also include other main components of the terminal device, for example, a memory, an input and output device, and the like.

The processor 1610 may be used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of software programs, for example, to support the communication device to perform corresponding operations in the foregoing method embodiments. The memory is mainly used to store software programs and data. After the communication device is powered on, the processor 1610 can read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program.

In one embodiment, the transceiver 1620 is configured to receive the first synchronization signal block;

The processor 1610 is configured to determine that the first synchronization signal block received by the transceiver 1620 is not associated with control information, and obtain first indication information carried by the physical broadcast channel in the first synchronization signal block, where the first indication information indicates the resource location of the second synchronization signal block, the second synchronization signal block is associated with the control information;

The transceiver 1620 is configured to receive the control information according to the first indication information obtained by the processor 1610 .

Optionally, the processor 1610 is further configured to determine that the first synchronization signal block is associated with the control information, and the transceiver 1620 is further configured to receive the control information according to the first synchronization signal block.

Optionally, the processor 1610 is specifically configured to, when the transmission mode of the first synchronization signal block indicates whether the first synchronization signal block is associated with the control information, determine the first synchronization signal block according to the transmission mode of the first synchronization signal block. Whether a sync block is associated with the control information.

Optionally, the processor 1610 is specifically configured to: when the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

The mapping manner is a first mapping manner among multiple predetermined mapping manners, and it is determined that the first synchronization signal block is associated with the control information; and/or

The mapping mode is the second mapping mode among the multiple predetermined mapping modes, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the processor 1610 is specifically configured to: when the transmission mode of the first synchronization signal block includes the value of the orthogonal cover code modulated on the transmission symbol of the first synchronization signal block;

The value of the orthogonal cover code is a first value among multiple predetermined values, and it is determined that the first synchronization signal block is associated with the control information; and/or

The value of the orthogonal cover code is the second value among the plurality of pre-values, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the processor 1610 is specifically configured to: when the transmission mode of the first synchronization signal block includes the range to which the synchronization signal identifier used by the first synchronization signal block belongs;

The synchronization signal identifier used by the first synchronization signal block belongs to the first subset, and it is determined that the first synchronization signal block is associated with the control information; and/or

The synchronization signal identifier used by the first synchronization signal block belongs to the second subset, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the processor 1610 is specifically configured to: when the transmission mode of the first synchronization signal block includes a cyclic redundancy check CRC mask used by the physical broadcast channel in the first synchronization signal block;

The CRC mask is a first CRC mask among multiple predetermined CRC masks, and it is determined that the first synchronization signal block is associated with the control information; and/or

The CRC mask is the second CRC mask among the plurality of predetermined CRC masks, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the processor 1610 is specifically configured to: when the transmission mode of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

The scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences, and it is determined that the first synchronization signal block is associated with the control information; and/or

The scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the processor 1610 is specifically configured to, when the physical broadcast channel carries second indication information, and the second indication information indicates whether the first synchronization signal block is associated with the control information, determine according to the second indication information Whether the first synchronization signal block is associated with the control information.

Optionally, the first indication information is carried in a reserved field of the physical broadcast channel.

Optionally, the physical broadcast channel includes a three-part field, wherein,

The first field is only valid when the first synchronization signal block is associated with the control information;

The second field is only valid when the first synchronization signal block is not associated with the control information, and the second field carries the first indication information;

The third field is valid when the first sync block is associated with or not associated with the control information.

Optionally, the bits occupied by the first field and the second field on the physical broadcast channel partially or completely overlap.

Optionally, the physical broadcast channel carries third indication information, and the third indication information indicates whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal identifier of the second synchronization signal block;

The processor 1610 is further configured to, according to the third indication information, determine whether the synchronization signal identifier of the first synchronization signal block is the same as the synchronization signal identifier of the second synchronization signal block.

Optionally, the physical broadcast channel carries fourth indication information, where the fourth indication information indicates a synchronization signal identifier of the second synchronization signal block;

The processor 1610 is further configured to, according to the fourth indication information, determine the synchronization signal identifier of the second synchronization signal block.

Optionally, the resource position is an absolute position in the bandwidth of the second synchronization signal block or a relative position relative to the first synchronization signal block.

In another embodiment, the transceiver 1620 is configured to receive the first synchronization signal block;

The processor 1610 is configured to determine whether the first synchronization signal block is associated with control information according to the transmission mode of the first synchronization signal block.

Optionally, the transmission mode of the first synchronization signal block includes a mapping mode of the synchronization signal sequence in the first synchronization signal block in the frequency domain;

The processor 1610 is specifically used for:

The mapping manner is a first mapping manner among multiple predetermined mapping manners, and it is determined that the first synchronization signal block is associated with the control information; and/or

The mapping mode is the second mapping mode among the multiple predetermined mapping modes, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a value of an orthogonal cover code modulated on a transmission symbol of the first synchronization signal block;

The processor 1610 is specifically used for:

The value of the orthogonal cover code is a first value among multiple predetermined values, and it is determined that the first synchronization signal block is associated with the control information; and/or

The value of the orthogonal cover code is the second value among the plurality of pre-values, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a range to which the synchronization signal identifier used by the first synchronization signal block belongs;

The processor 1610 is specifically used for:

The synchronization signal identifier used by the first synchronization signal block belongs to the first subset, and it is determined that the first synchronization signal block is associated with the control information; and/or

The synchronization signal identifier used by the first synchronization signal block belongs to the second subset, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a CRC mask used by the physical broadcast channel in the first synchronization signal block;

The processor 1610 is specifically used for:

The CRC mask is a first CRC mask among multiple predetermined CRC masks, and it is determined that the first synchronization signal block is associated with the control information; and/or

The CRC mask is the second CRC mask among the plurality of predetermined CRC masks, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transmission mode of the first synchronization signal block includes a scrambling sequence adopted by the physical broadcast channel in the first synchronization signal block;

The processor 1610 is specifically used for:

The scrambling sequence is a first scrambling sequence among multiple predetermined scrambling sequences, and it is determined that the first synchronization signal block is associated with the control information; and/or

The scrambling sequence is the second scrambling sequence among the plurality of predetermined scrambling sequences, and it is determined that the first synchronization signal block is not associated with the control information.

Optionally, the transceiver 1620 is further configured to receive the control information according to the first synchronization signal block when the first synchronization signal block is associated with the control information.

It should be understood that the processor 1510 or the processor 1610 in this embodiment of the present invention may be implemented by a processing unit or a chip, and optionally, the processing unit may be constituted by multiple units in the implementation process.

It should be understood that the transceiver 1520 or the transceiver 1620 in this embodiment of the present invention may be implemented by a transceiver unit or a chip. unit composition.

It should be understood that the processor 1510 and the transceiver 1520 in this embodiment of the present invention may be implemented by a chip, and the processor 1610 and the transceiver 1620 may be implemented by a chip.

Optionally, the communication device may further include a memory, and the memory may store program codes, and the processor invokes the program codes stored in the memory to implement corresponding functions of the communication device. Alternatively, the processor and memory may be implemented in a chip.

The embodiment of the present invention also provides a processing device, including a processor and an interface;

The processor is configured to execute the above methods in various embodiments of the present invention.

The processing device may be a chip, the processor may be implemented by hardware or software, when implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processing The processor may be a general-purpose processor, which is implemented by reading software codes stored in a memory, which may be integrated in the processor, or located outside the processor, and exists independently.

For example, the processing device may be a Field-Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a System on Chip (SoC), or a It can be a Central Processor Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), or a Micro Controller (Micro Controller). Unit, MCU), can also be a programmable controller (Programmable Logic Device, PLD) or other integrated chips.

An embodiment of the present invention further provides a communication device, including a processing unit and a transceiver unit. The processing unit and the transceiver unit may be implemented in software or in hardware. In the case of hardware implementation, the processing unit may be the processor 1510 in FIG. 15 , the transceiver unit may be the transceiver 1520 in FIG. 15 ; or, the processing unit may be the processor 1610 in FIG. 16 , the transceiver unit The unit may be transceiver 1620 in FIG. 16 .

An embodiment of the present invention further provides a communication system, including the above-mentioned first device and second device.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), and the like.

It should be understood that, in the embodiments of the present invention, the terms "first", "second", etc. are only used to refer to objects, and do not indicate the order of the corresponding objects.

It should be understood that, in this embodiment of the present invention, the term "and/or" is only an association relationship for describing associated objects, indicating that there may be three kinds of relationships. For example, A and/or B can mean that A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (50)

1. a method of communication, is characterized in that, comprises: determining that the first synchronization signal block is not associated with control information; determining first indication information, where the first indication information is used to indicate a resource location of a second synchronization signal block, and the second synchronization signal block is associated with control information; The first synchronization signal block is sent, wherein the physical broadcast channel in the first synchronization signal block carries the first indication information. 2. The method according to claim 1, wherein the second synchronization signal block associated control information comprises: Control information that needs to be sent exists on the same time domain resource as the second synchronization signal block or in the time domain resource subsequent to the second synchronization signal block in a manner specified in the protocol or in a predefined manner. 3 . The method according to claim 2 , wherein the subsequent time domain resources and the second synchronization signal block have a corresponding relationship in time. 4 . 4. The method according to any one of claims 1 to 3, wherein the second synchronization signal block associated control information comprises: The resource configuration information of the control information associated with the terminal equipment is indicated through the physical broadcast channel in the second synchronization signal block. 5. The method according to any one of claims 1 to 3, wherein the resource position of the second synchronization signal block includes an absolute position of the second synchronization signal block in the bandwidth, or includes the first synchronization signal block. The relative position of the second synchronization signal block in the frequency domain with respect to the first synchronization signal block. 6. The method according to any one of claims 1 to 3, wherein the first indication information is used to indicate the resource location of the second synchronization signal block comprising: The first indication information is used to indicate a frequency domain offset value between the second synchronization signal block and the first synchronization signal block; or The first indication information is used to indicate the frequency domain position of the physical resource block of the second synchronization signal block in the current carrier. The method according to any one of claims 1 to 3, wherein the physical broadcast channel further carries third indication information, and the third indication information is used to indicate that the first synchronization signal block is not associated the control information. 8. The method according to any one of claims 1 to 3, further comprising: sending the second synchronization signal block, wherein a physical broadcast channel of the second synchronization signal block carries third indication information, the The third indication information is used to indicate the block associated control information of the second synchronization signal. 9 . The method according to claim 8 , wherein the second synchronization signal block further comprises second indication information, and the second indication information is associated with system information. 10 . 10. The method according to any one of claims 1 to 3, wherein the physical broadcast channel comprises a first field, a second field and a third field, wherein: the first field is only valid when the first synchronization signal block is associated with the control information; The second field is only valid when the first synchronization signal block is not associated with the control information, and the second field carries the first indication information; the third field is valid when the first synchronization signal block is associated with or not associated with the control information; The bits occupied by the first field and the second field on the physical broadcast channel partially or completely overlap. 11. The method according to claim 10, wherein the second field carrying the first indication information comprises: When the first synchronization signal block is not associated with control information, use one or more of the RMSI control resource in the physical broadcast channel, the subcarrier offset value of the synchronization signal in the PRB, or the system frame number SFN to carry the first indication information. 12. The method according to any one of claims 1 to 3, wherein the control information comprises system information SI. 13. A communication device, comprising a processor and a transceiver; wherein, The processor is configured to determine that the first synchronization signal block is not associated with control information, and determine first indication information, where the first indication information is used to indicate the resource location of the second synchronization signal block, the second synchronization signal block Signal block associated control information; The transceiver is configured to send the first synchronization signal block, wherein the physical broadcast channel in the first synchronization signal block carries the first indication information determined by the processor. 14. The communication device according to claim 13, wherein the second synchronization signal block associated control information comprises: Control information that needs to be sent exists on the same time domain resource as the second synchronization signal block or in the time domain resource subsequent to the second synchronization signal block in a manner specified in the protocol or in a predefined manner. 15 . The communication device according to claim 14 , wherein the subsequent time domain resources and the second synchronization signal block have a corresponding relationship in time. 16 . 16. The communication device according to any one of claims 13 to 15, wherein the second synchronization signal block associated control information comprises: The resource configuration information of the control information associated with the terminal equipment is indicated through the physical broadcast channel in the second synchronization signal block. 17. The communication device according to any one of claims 13 to 15, wherein the resource position of the second synchronization signal block includes an absolute position of the second synchronization signal block in a bandwidth, or includes the The relative position of the second synchronization signal block in the frequency domain with respect to the first same-frequency signal block. 18. The communication device according to any one of claims 13 to 15, wherein the first indication information is used to indicate the resource location of the second synchronization signal block, comprising: The first indication information is used to indicate a frequency domain offset value between the second synchronization signal block and the first synchronization signal block; or The first indication information is used to indicate the frequency domain position of the physical resource block of the second synchronization signal block in the current carrier. 19. The communication device according to any one of claims 13 to 15, wherein the physical broadcast channel further carries third indication information, and the third indication information is used to indicate that the first synchronization signal block does not Associate the control information. 20. The communication device according to any one of claims 13 to 15, wherein the transceiver is further configured to: transmit the second synchronization signal block, wherein a physical broadcast channel of the second synchronization signal block carries third indication information, where the third indication information is used to indicate the second synchronization signal block associated control information. 21. The communication device according to claim 20, wherein the second synchronization signal block further comprises second indication information, and the second indication information is associated with system information. 22. The communication device according to any one of claims 13 to 15, wherein the physical broadcast channel comprises a first field, a second field and a third field, wherein: the first field is only valid when the first synchronization signal block is associated with the control information; The second field is only valid when the first synchronization signal block is not associated with the control information, and the second field carries the first indication information; the third field is valid when the first synchronization signal block is associated with or not associated with the control information; The bits occupied by the first field and the second field on the physical broadcast channel partially or completely overlap. 23. The communication device according to claim 22, wherein the second field carrying the first indication information comprises: When the first synchronization signal block is not associated with control information, use one or more of the RMSI control resources in the physical broadcast channel, the subcarrier offset value of the synchronization signal in the PRB, or the system frame number SFN to carry the first indication information. 24. The communication device according to any one of claims 13 to 15, wherein the control information comprises system information SI. 25. A method for wireless communication, comprising: The terminal device receives the first synchronization signal block from the network device, the first synchronization signal block is not associated with control information, the first synchronization signal block includes first indication information, and the first indication information is used to indicate the second synchronization a resource location of a signal block, the second synchronization signal block is associated with the control information; The terminal device receives a second synchronization signal block from the network device, where the second synchronization signal block includes second indication information; The terminal device receives system information according to the second indication information. 26. The method of claim 25, wherein the method further comprises: It is determined that the first synchronization signal block is not associated with control information, and the second synchronization signal block is determined to be associated with control information. 27. The method according to claim 25, wherein the second synchronization signal block associated control information comprises: Control information that needs to be received exists on the same time domain resource as the second synchronization signal block or on the time domain resource subsequent to the second synchronization signal block in a manner specified in the protocol or in a predefined manner. 28. The method according to claim 27, wherein the subsequent time domain resources and the second synchronization signal block have a corresponding relationship in time. 29. The method according to any one of claims 25 to 28, wherein the second synchronization signal block associated control information comprises: The physical broadcast channel in the second synchronization signal block indicates resource configuration information of the associated control information. 30 . The method according to claim 29 , wherein the resource position of the second synchronization signal block includes an absolute position of the second synchronization signal block in the bandwidth, or includes a relative position of the second synchronization signal block. 31 . relative position in the frequency domain of the first synchronization signal block. 31. The method according to any one of claims 25 to 28, wherein the first indication information is used to indicate the resource location of the second synchronization signal block comprising: the first indication information is used to indicate the The frequency offset value of the second synchronization signal block and the first synchronization signal block. 32. The method of claim 31, wherein the frequency offset value indicates a difference between frequency points of the second synchronization signal block and the first synchronization signal block. 33. The method according to any one of claims 25 to 28, wherein the first indication information is indicated by a physical broadcast channel PBCH in the first synchronization signal block. 34. The method according to claim 33, wherein the physical broadcast channel further comprises third indication information, wherein the third indication information is used to indicate that the first synchronization signal block is not associated with all the control information. 35. The method according to any one of claims 25 to 28, wherein the second indication information is indicated by a physical broadcast channel PBCH in the second synchronization signal block. 36. The method according to claim 35, wherein the physical broadcast channel further comprises third indication information, wherein the third indication information is used to indicate that the second synchronization signal block includes the second indication information, and/or the third indication information is used to indicate that the second synchronization signal block is associated with system information. 37. A communication device, characterized in that it comprises: A unit for receiving a first synchronization signal block from a network device, the first synchronization signal block is not associated with control information, the first synchronization signal block includes first indication information, and the first indication information is used to indicate the first synchronization signal block. Resource locations of two synchronization signal blocks, the second synchronization signal blocks are associated with the control information; a unit for receiving a second synchronization signal block from a network device, the second synchronization signal block including second indication information; A unit for receiving system information according to the second indication information. 38. The apparatus of claim 37, wherein the apparatus further comprises: means for determining that the first synchronization signal block is not associated with the control information, and determining that the second synchronization signal block is associated with the control information. 39. The apparatus according to claim 37, wherein the second synchronization signal block associated control information comprises: Control information that needs to be received exists on the same time domain resource as the second synchronization signal block or on the time domain resource subsequent to the second synchronization signal block in a manner specified in the protocol or in a predefined manner. 40 . The apparatus according to claim 39 , wherein the subsequent time domain resources and the second synchronization signal block have a corresponding relationship in time. 41 . 41. The apparatus according to any one of claims 37 to 40, wherein the second synchronization signal block associated control information comprises: The physical broadcast channel in the second synchronization signal block indicates resource configuration information of the associated control information. 42. The apparatus according to claim 41, wherein the resource position of the second synchronization signal block includes an absolute position of the second synchronization signal block in a bandwidth, or includes a relative position of the second synchronization signal block relative position in the frequency domain of the first synchronization signal block. 43. The apparatus according to any one of claims 37 to 40, wherein the first indication information used to indicate the resource location of the second synchronization signal block comprises: the first indication information is used to indicate The frequency offset value of the second synchronization signal block and the first synchronization signal block. 44. The apparatus according to claim 43, wherein the frequency offset value indicates a difference between frequency points of the second synchronization signal block and the first synchronization signal block. 45. The apparatus according to any one of claims 37 to 40, wherein the first indication information is indicated by a physical broadcast channel PBCH in the first synchronization signal block. 46. The apparatus according to claim 45, wherein the physical broadcast channel further comprises third indication information, wherein the third indication information is used to indicate that the first synchronization signal block is not associated with all the control information. 47. The apparatus according to any one of claims 37 to 40, wherein the second indication information is indicated by a physical broadcast channel PBCH in the second synchronization signal block. 48. The apparatus according to claim 47, wherein the physical broadcast channel further includes third indication information, wherein the third indication information is used to indicate that the second synchronization signal block includes the The second indication information, and/or the third indication information is used to indicate that the second synchronization signal block is associated with system information. 49. A communication device, comprising: a processor and a memory; The memory is used for storing computer-executable instructions, when the processor executes the computer-executable instructions, so that the communication device executes the method of any one of claims 1-12, or is used to execute claim 26 The method of any one of -36. 50. A computer-readable storage medium comprising instructions that, when run on a computer, cause the computer to perform the method of any one of claims 1-12, or for performing the method of claim 25 The method of any one of -36.

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