CN114080018A

CN114080018A - Communication method and device

Info

Publication number: CN114080018A
Application number: CN202010851441.8A
Authority: CN
Inventors: 苏俞婉; 罗之虎; 金哲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2022-02-22
Also published as: WO2022037451A1

Abstract

The embodiment of the application provides a communication method and a communication device, which are used for enabling terminal devices corresponding to different communication systems to access a network through synchronous signals sent on the same time-frequency resource, so that the network devices do not need to send different synchronous signals on different time-frequency resources aiming at different communication systems, and the network resource and device energy consumption expenses of the network devices can be reduced. In the method, a first synchronization signal is determined, the first synchronization signal is carried in a first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, wherein the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems; thereafter, the first synchronization signal is transmitted on the first time-frequency resource.

Description

Communication method and device

Technical Field

The present application relates to the field of wireless communications, and in particular, to a communication method and apparatus.

Background

The Low Power Wide Area (LPWA) refers to an internet of things scene with low power and wide coverage, and the LPWA is suitable for long-distance transmission, small communication data volume and long-time operation of battery power supply. Narrow-band internet of things (NB-IoT), enhanced machine type communication (eMTC), are typical internet of things technologies facing LPWA.

Currently, in the process of accessing a network device by a terminal device, the network device sends an initial access signal to the terminal device, and the terminal device may use the initial access signal to complete synchronization with a cell in time and frequency so as to access the network device. In an LPWA scenario, there are multiple different communication systems, and a network device needs to send different initial access signals in different time-frequency resources for the different communication systems, so as to enable terminal devices corresponding to the different communication systems to access the network device.

However, the network device needs to bear different initial access signals on different time-frequency resources for transmission, that is, the network device needs to transmit different initial access signals for multiple times in the process of accessing the network device by the terminal device, which easily causes large overhead of network resources and device energy consumption of the network device, and affects communication efficiency.

Disclosure of Invention

The embodiment of the application provides a communication method and a communication device, which are used for enabling terminal equipment corresponding to different communication systems to obtain time-frequency synchronization through a synchronization signal carried on the same time-frequency resource so as to realize network communication. In addition, the synchronization signals sent by the network device on the same time-frequency resource can enable the terminal devices corresponding to different communication systems to access the network, so that the network device does not need to send different synchronization signals on different time-frequency resources aiming at different communication systems, the network resource and device energy consumption overhead of the network device can be reduced, and the communication efficiency is improved.

In a first aspect of the embodiments of the present application, a communication method is provided, where the method is applied to a communication device, where the communication device may be a network device, and may also be implemented for a component of the network device (for example, a processor, a chip, or a chip system, etc.), in the method, the network device determines a first synchronization signal, where the first synchronization signal is carried in a first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems; the network device then transmits the first synchronization signal on the first time-frequency resource.

In this embodiment, in the first synchronization signal sent by the network device on the first time-frequency resource, the first synchronization signal carried on the first time-frequency resource is used in the first communication system, the first part of the first synchronization signal carried on the second time-frequency resource is used in the second communication system, and the second time-frequency resource is a part of the time-frequency resource of the first time-frequency resource. The first communication system and the second communication system are different communication systems, so that terminal devices corresponding to different communication systems can identify different synchronization signals through the first time-frequency resource. Compared with the case that the network device respectively sends different synchronous signals on different time-frequency resources aiming at different communication systems, the first synchronous signal sent by the network device on the first time-frequency resource can enable the terminal devices corresponding to different communication systems to access the network, thereby reducing the expenditure of network resources and device energy consumption caused by the fact that the network device sends different synchronous signals on different time-frequency resources and improving the communication efficiency.

In a possible implementation manner of the first aspect of the present application, the second part of the first synchronization signal is carried in a third time-frequency resource, where the third time-frequency resource is a part of time-frequency resources in the first time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource, and a sequence of the first part of the first synchronization signal is the same as a sequence of the second part of the first synchronization signal.

In this embodiment, the third time frequency resource and the second time frequency resource are both part of the first time frequency resource, and the third time frequency resource is different from the second time frequency resource. And carrying a first part of the first synchronization signal on the second time frequency resource, carrying a second part of the first synchronization signal on the third time frequency resource, wherein the sequence of the first part of the first synchronization signal is the same as that of the second part of the first synchronization signal, so that at least two parts of the first synchronization signal carry the same sequence. Therefore, a specific implementation mode of each part of the bearing sequence in the first synchronization signal is provided, and the realizability of the scheme is improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the first synchronization signal is a primary synchronization signal PSS, and a first part of the first synchronization signal is obtained by a first sequence and a first scrambling code.

In this embodiment, the first synchronization signal may be a primary synchronization signal PSS, i.e., PSS is used in the first communication system; the first part of the first synchronization signal is obtained by the first sequence and the first scrambling code, i.e. the first part of the first synchronization signal obtained by the first sequence and the first scrambling code is used for the second communication system. The first part of the first synchronization signal can be obtained through the first sequence and the first scrambling code, and the scheme can be applied in a communication scene where the first synchronization signal is the PSS while providing a specific implementation manner of the first part of the first synchronization signal, so that the realizability of the scheme is improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the first sequence is a ZC sequence, and the first scrambling code is {1,1, 1,1, -1, -1, 1,1, -1, 1 }.

In this embodiment, the first part of the first synchronization signal is obtained by a first sequence and a first scrambling code, wherein the first sequence may specifically be a ZC sequence, and the first scrambling code may specifically be {1,1, 1,1, -1, 1 }. Therefore, a specific implementation mode of the first sequence and the first scrambling code is provided, and the realizability of the scheme is improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the second time-frequency resource includes subframe No. 5 in a radio frame.

In this embodiment, the second time-frequency resource may specifically include subframe No. 5 in the radio frame, which provides a specific implementation manner of the second time-frequency resource and improves the realizability of the scheme.

In a possible implementation manner of the first aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe No. 5.

In this embodiment, the second time-frequency resource may specifically include the last 11 OFDM symbols of the 14 OFDM symbols in the subframe No. 5, which provides a more specific implementation manner of the second time-frequency resource, and further improves the realizability of the scheme.

In a possible implementation manner of the first aspect of the embodiment of the present application, the first synchronization signal is a secondary synchronization signal SSS, and the first portion of the first synchronization signal is obtained by the second sequence and the second scrambling code.

Alternatively, the second sequence may be different from the first sequence and the second scrambling code may be different from the first scrambling code.

In this embodiment, the first synchronization signal may be a primary synchronization signal SSS, that is, an SSS used in the first communication system; the first part of the first synchronization signal is obtained by the second sequence and the second scrambling code, i.e. the first part of the first synchronization signal obtained by the second sequence and the second scrambling code is used for the second communication system. The first part of the first synchronization signal can be obtained through the second sequence and the second scrambling code, and the scheme can be applied in a communication scene that the first synchronization signal is the SSS while the specific implementation mode of the first part of the first synchronization signal is provided, so that the realizability of the scheme is improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the second sequence is a ZC sequence, and the second scrambling code is a binary scrambling code with a length of 128.

In this embodiment, the second sequence may specifically be a ZC sequence, and the second scrambling code may specifically be a binary scrambling code with a length of 128. Therefore, a specific implementation mode of the second sequence and the second scrambling code is provided, and the realizability of the scheme is improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the second time-frequency resource includes subframe number 9 in an even radio frame.

In this embodiment, the second time-frequency resource may specifically include subframe 9 in an even-numbered radio frame, which provides a specific implementation manner of the second time-frequency resource, and improves the realizability of the scheme.

In a possible implementation manner of the first aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 9.

In this embodiment, the second time-frequency resource may specifically include the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 9, so as to provide a more specific implementation manner of the second time-frequency resource, and further improve the realizability of the scheme.

In a possible implementation manner of the first aspect of the embodiment of the present application, the physical cell identifier of the cell in which the terminal device is located is related to a first parameter, where the first parameter is related to a relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code.

In this embodiment, the physical cell identifier of the cell in which the terminal device is located is related to the first parameter, and the first parameter may specifically be a value that is different according to different implementation manners of the first synchronization signal. The first parameter may be related to a relative position of the second time-frequency resource in the first time-frequency resource, for example, different first parameters are determined according to different relative positions; alternatively, the first parameter may relate to a third scrambling code, and the first synchronization signal may be a signal scrambled by the third scrambling code, e.g. a different first parameter may be determined depending on the third scrambling code. Namely, various values of the first parameter can be determined through different implementation modes of the first synchronization signal. Therefore, multiple implementation modes for determining the first parameter are provided, flexible configuration of the physical cell identifier of the cell where the terminal device is located is achieved, and meanwhile the realizability of the scheme is improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the first synchronization signal is an SSS, and a physical cell identity of a cell in which the terminal device is located is related to a first parameter and a second parameter, where the second parameter is related to the first sequence and the first scrambling code.

In this embodiment, when the first synchronization signal is SSS, the physical cell identifier of the cell where the terminal device is located is related to a first parameter and a second parameter, where the second parameter is related to the first sequence and the first scrambling code. Therefore, a more specific implementation manner for determining the physical cell identifier of the cell where the terminal device is located is provided in the scenario where the first synchronization signal is the SSS, and the implementability of the scheme is further improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the first synchronization signal is a PSS, and a physical cell identifier of a cell in which the terminal device is located is related to a first parameter and a second parameter, where the method further includes: the network device transmits SSS to the terminal device on a fourth time-frequency resource, the fourth time-frequency resource being different from the first time-frequency resource, the second parameter relating to the SSS.

In this embodiment, when the first synchronization signal is PSS, the physical cell identity of the cell in which the terminal device is located is related to a first parameter and a second parameter, where the second parameter is related to SSS carried on a fourth time-frequency resource, and the fourth time-frequency resource is different from the first time-frequency resource. Therefore, a more specific implementation manner for determining the physical cell identifier of the cell where the terminal device is located is provided under the scenario that the first synchronization signal is the PSS, and the realizability of the scheme is further improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, a physical cell identifier of a cell in which the terminal device is located is related to the first parameter, where the physical cell identifier includes:

alternatively, the first and second electrodes may be,

wherein, the

Is the cell of the terminal equipmentOf the physical cell identity of

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

Is a natural number not greater than 503.

Optionally, the

May be the second parameter.

In this embodiment, when the physical cell identity of the cell in which the terminal device is located is related to the first parameter, the physical cell identity of the cell in which the terminal device is located may be specifically determined through the two manners. Therefore, a more specific implementation mode of determining the physical cell identifier of the cell in which the terminal device is located is provided under the scene that the physical cell identifier of the cell in which the terminal device is located is related to the first parameter, and the realizability of the scheme is further improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the frequency domain resources in the first time-frequency resources include frequency domain resources in at least one of the following frequency bands:

n1、n2、n3、n5、n7、n8、n12、n14、n18、n20、n25、n28、n41、n65、n66、n70、n71、n74、n90。

in this embodiment, the frequency domain resource in the first time frequency resource includes a time frequency resource in the at least one frequency band, that is, the terminal device in the first communication system and the terminal device in the second communication system may obtain time frequency synchronization through the first time frequency resource in the at least one frequency band. Various specific implementation modes of the first time-frequency resource are provided, and the realizability of the scheme is improved.

A second aspect of the embodiments of the present application provides a communication method, where the method is applied to a communication apparatus, where the communication apparatus may be a terminal device, and may also be implemented for a component of the terminal device (for example, a processor, a chip, or a chip system, etc.), in the method, the terminal device receives a first synchronization signal sent from a network device on a first time-frequency resource, where the first synchronization signal is carried in the first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems; and then, the terminal equipment acquires time-frequency synchronization according to the first synchronization signal.

In this embodiment, in receiving, by a terminal device, a first synchronization signal sent from a network device on a first time-frequency resource, a first synchronization signal carried on the first time-frequency resource is used in a first communication system, a first part of the first synchronization signal carried on a second time-frequency resource is used in a second communication system, and the second time-frequency resource is a part of the time-frequency resource of the first time-frequency resource. In the process of acquiring time-frequency synchronization by the terminal device according to the first synchronization signal, because the first communication system and the second communication system are different communication systems, the terminal devices corresponding to different communication systems can identify different synchronization signals through the first time-frequency resource, and can acquire the time-frequency synchronization. In addition, compared with the case that the network device sends different synchronization signals on different time-frequency resources for different communication systems, the first synchronization signal sent by the network device on the first time-frequency resource can enable terminal devices corresponding to different communication systems to access the network, so that the overhead of network resource and device energy consumption caused by the fact that the network device sends different synchronization signals on different time-frequency resources can be reduced, and the communication efficiency is improved.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second part of the first synchronization signal is carried in a third time-frequency resource, where the third time-frequency resource is a part of time-frequency resources in the first time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource, and a sequence of the first part of the first synchronization signal is the same as a sequence of the second part of the first synchronization signal.

In a possible implementation manner of the second aspect of the embodiment of the present application, the first synchronization signal is a primary synchronization signal PSS, and a first part of the first synchronization signal is obtained by a first sequence and a first scrambling code.

In this embodiment, the first synchronization signal may be a primary synchronization signal PSS, i.e., PSS is used in the first communication system; the first part of the first synchronization signal is obtained by the first sequence and the first scrambling code, i.e. the first part of the first synchronization signal obtained by the first sequence and the first scrambling code is used for the second communication system. The first part of the first synchronization signal can be obtained through the first sequence and the first scrambling code, so that the scheme can be applied in a communication scene that the first synchronization signal is the PSS, and the realizability of the scheme is improved.

In a possible implementation manner of the second aspect of the embodiment of the present application, the first sequence is a ZC sequence, and the first scrambling code is {1,1, 1,1, -1, -1, 1,1, 1, -1, 1 }.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second time-frequency resource includes subframe No. 5 in a radio frame.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe No. 5.

In a possible implementation manner of the second aspect of the embodiment of the present application, the first synchronization signal is a secondary synchronization signal SSS, and the first portion of the first synchronization signal is obtained by the second sequence and the second scrambling code.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second sequence is a ZC sequence, and the second scrambling code is a binary scrambling code with a length of 128.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second time-frequency resource includes subframe number 9 in an even radio frame.

In a possible implementation manner of the second aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 9.

In a possible implementation manner of the second aspect of the embodiment of the present application, the physical cell identifier of the cell in which the terminal device is located is related to a first parameter, where the first parameter is related to a relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code.

In a possible implementation manner of the second aspect of the embodiment of the present application, the first synchronization signal is an SSS, and a physical cell identity of a cell in which the terminal device is located is related to a first parameter and a second parameter, where the second parameter is related to the first sequence and the first scrambling code.

In a possible implementation manner of the second aspect of the embodiment of the present application, the first synchronization signal is a PSS, and a physical cell identifier of a cell in which the terminal device is located is related to the first parameter and the second parameter, the method further includes: the terminal device receives the SSS from the network device on a fourth time-frequency resource, the fourth time-frequency resource being different from the first time-frequency resource, the second parameter relating to the SSS.

In a possible implementation manner of the second aspect of the embodiment of the present application, the determining that the physical cell identity of the cell in which the terminal device is located is related to the first parameter includes:

alternatively, the first and second electrodes may be,

wherein, the

Is a physical cell identity of the cell in which the terminal device is located, the

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

Is a natural number not greater than 503.

Optionally, the

May be the second parameter.

In a possible implementation manner of the second aspect of the embodiment of the present application, the frequency domain resources in the first time-frequency resources include frequency domain resources in at least one of the following frequency bands:

in this embodiment, the frequency domain resource in the first time frequency resource includes the at least one frequency band, that is, the first communication system and the second communication system may be applied to the at least one frequency band. Various specific implementation modes of the first time-frequency resource are provided, and the realizability of the scheme is improved.

A third aspect of the embodiments of the present application provides a communication method, where the method is applied to a communication device, where the communication device may be a network device, and may also be implemented for a component of the network device (for example, a processor, a chip, or a chip system, and the like), in the method, the network device determines a first system message, where the first system message is carried in a first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource, where the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems; thereafter, the network device transmits the first system message on the first time-frequency resource.

In this embodiment, in the first system message sent by the network device on the first time-frequency resource, the first system message carried on the first time-frequency resource is used in the first communication system, the first part of the first system message carried on the second time-frequency resource is used in the second communication system, and the second time-frequency resource is a part of the time-frequency resource of the first time-frequency resource. The first communication system and the second communication system are different communication systems, so that terminal devices corresponding to different communication systems can identify different system messages through the first time-frequency resource. In addition, compared with the case that the network device respectively sends different system messages on different time-frequency resources for different communication systems, the first system message sent by the network device on the first time-frequency resource can enable terminal devices corresponding to different communication systems to acquire the system messages and then access the network, so that the network resource and device energy consumption cost caused by the fact that the network device sends different system messages on different time-frequency resources can be reduced, and the communication efficiency is improved.

In a possible implementation manner of the third aspect of the embodiment of the present application, the second part of the first system message is carried in a third time-frequency resource, where the third time-frequency resource is a part of the time-frequency resources in the first time-frequency resource, the third time-frequency resource is different from the second time-frequency resource, and the first part of the first system message is the same as the second part of the first system message.

In this embodiment, the third time frequency resource and the second time frequency resource are both part of the first time frequency resource, and the third time frequency resource is different from the second time frequency resource. The first part of the first system message is carried on the second time frequency resource, the second part of the first system message is carried on the third time frequency resource, and the content or the data carried by the first part of the first system message is the same as the content or the data carried by the second part of the first system message, so that at least two same parts in the first system message carry the same message. Therefore, a specific implementation mode that each part in the first system message bears the content is provided, and the realizability of the scheme is improved.

In a possible implementation manner of the third aspect of the embodiment of the present application, the first part of the first system message is a system message scrambled by a target scrambling code, an initialization seed of the target scrambling code is related to a first parameter, and the first parameter is related to a physical cell identifier of a cell where the terminal device is located.

In this embodiment, the first part of the first system message is a system message scrambled by a target scrambling code, where an initialization seed of the target scrambling code is related to a first parameter, and the first parameter is related to a physical cell identifier of a cell where the terminal device is located. Specific implementations for determining a target scrambling code for the first portion of the first system message are provided, improving the realizability of the scheme.

In a possible implementation manner of the third aspect of the embodiment of the present application, the first system message is a master information block MIB carried on a physical broadcast channel PBCH, and the first parameter includes:

alternatively, the first and second electrodes may be,

wherein, the

The mod represents the remainder operation for the physical cell identity of the cell in which the terminal device is located, the mod

Indicating a rounding down, the/indicates a divide operation.

In this embodiment, the first system message may specifically be a master information block MIB carried on a physical broadcast channel PBCH, and at this time, the first parameter may be implemented in the above two manners. Therefore, under the scene that the first system message is the master information block MIB carried on the physical broadcast channel PBCH, the realizability of the scheme is improved through various specific implementation modes of the first parameter.

In a possible implementation manner of the third aspect of the embodiment of the present application, the associating the first parameter with the physical cell identity of the cell in which the terminal device is located includes:

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

For the first parameter, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

In this embodiment, the first parameter may specifically be implemented by determining the initialization seed of the target scrambling code according to the physical cell identifier of the cell in which the terminal device is located in the two manners. Therefore, under the scene that the first parameter is related to the physical cell identifier of the cell where the terminal device is located, various more specific implementation modes of the initialization seed of the target scrambling code are provided, and the realizability of the scheme is improved.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

Is the first parameter, the n_fFor a radio frame number, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

In a possible implementation manner of the third aspect of the embodiment of the present application, the second time-frequency resource includes subframe No. 0 in a radio frame.

In this embodiment, the second time-frequency resource may specifically include a subframe 0 in a wireless frame, which provides a specific implementation manner of the second time-frequency resource and improves the realizability of the scheme.

In a possible implementation manner of the third aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 0.

In this embodiment, the second time-frequency resource may specifically include the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 0, so as to provide a more specific implementation manner of the second time-frequency resource, and further improve the realizability of the scheme.

In a possible implementation manner of the third aspect of the embodiment of the present application, the frequency domain resources in the first time frequency resources include frequency domain resources in at least one of the following frequency bands:

in this embodiment, the frequency domain resource in the first time-frequency resource includes a time-frequency resource in the at least one frequency band, that is, the terminal device in the first communication system and the terminal device in the second communication system may obtain the system message through the first time-frequency resource in the at least one frequency band. Various specific implementation modes of the first time-frequency resource are provided, and the realizability of the scheme is improved.

A fourth aspect of the embodiments of the present application provides a communication method, where the method is applied to a communication apparatus, where the communication apparatus may be a terminal device, and may also be implemented for a component of the terminal device (for example, a processor, a chip, or a chip system, etc.), in the method, the terminal device receives, on a first time-frequency resource, a first signal including a first system message from a network device, where the first system message is carried in the first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource, where the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems; thereafter, the terminal device acquires a system message according to the first signal.

In this embodiment, in receiving, by a terminal device, a first system message sent from a network device on a first time-frequency resource, where the first system message carried on the first time-frequency resource is used in a first communication system, a first part of the first system message carried on a second time-frequency resource is used in a second communication system, and the second time-frequency resource is a part of the time-frequency resource of the first time-frequency resource. In the process that the terminal device acquires the system message according to the first signal, because the first communication system and the second communication system are different communication systems, the terminal devices corresponding to different communication systems can identify different system messages through the first time-frequency resource, and can acquire the system message. In addition, compared with the case that the network device respectively sends different system messages on different time-frequency resources for different communication systems, the first system message sent by the network device on the first time-frequency resource can enable terminal devices corresponding to different communication systems to acquire the system messages and then access the network, so that the overhead of network resource and device energy consumption caused by the fact that the network device sends different synchronous signals on different time-frequency resources can be reduced, and the communication efficiency is improved.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the second part of the first system message is borne by a third time-frequency resource, where the third time-frequency resource is a part of the time-frequency resources in the first time-frequency resource, the third time-frequency resource is different from the second time-frequency resource, and the first part of the first system message is the same as the second part of the first system message.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the first part of the first system message is a system message scrambled by a target scrambling code, an initialization seed of the target scrambling code is related to a first parameter, and the first parameter is related to a physical cell identifier of a cell in which the terminal device is located.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the first system message is a master information block MIB carried on a physical broadcast channel PBCH, and the first parameter includes:

alternatively, the first and second electrodes may be,

wherein, the

Indicating a rounding down, the/indicates a divide operation.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the determining that the first parameter is related to the physical cell identity of the cell in which the terminal device is located includes:

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

For the first parameter, the mod represents a remainder operation, the

Represents rounding down, the/representation dividing and transportingAnd (4) calculating.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

Indicating a rounding down, the/indicates a divide operation.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the second time-frequency resource includes subframe No. 0 in a radio frame.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 0.

In a possible implementation manner of the fourth aspect of the embodiment of the present application, the frequency domain resources in the first time frequency resources include frequency domain resources in at least one of the following frequency bands:

A fifth aspect of the embodiments of the present application provides a communication apparatus, including a processing unit and a transceiver unit;

the processing unit is configured to determine a first synchronization signal, where the first synchronization signal is carried in a first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the transceiver unit is configured to transmit the first synchronization signal on the first time/frequency resource.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the second part of the first synchronization signal is carried in a third time-frequency resource, where the third time-frequency resource is a part of time-frequency resources in the first time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource, and a sequence of the first part of the first synchronization signal is the same as a sequence of the second part of the first synchronization signal.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the first synchronization signal is a primary synchronization signal PSS, and a first part of the first synchronization signal is obtained by a first sequence and a first scrambling code.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, wherein the first sequence is a ZC sequence, and the first scrambling code is {1,1, 1,1, -1, -1, 1,1, 1 }.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the second time-frequency resource includes subframe No. 5 in a radio frame.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe No. 5.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the first synchronization signal is a secondary synchronization signal SSS, a first portion of the first synchronization signal is obtained by the second sequence and the second scrambling code,

in a possible implementation manner of the fifth aspect of the embodiment of the present application, the second sequence is a ZC sequence, and the second scrambling code is a binary scrambling code with a length of 128.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the second time-frequency resource includes subframe 9 in an even radio frame.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 9.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the physical cell identifier of the cell in which the terminal device is located is related to a first parameter, where the first parameter is related to a relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the first synchronization signal is an SSS, and a physical cell identity of a cell in which the terminal device is located is related to a first parameter and a second parameter, where the second parameter is related to the first sequence and the first scrambling code.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the first synchronization signal is a PSS, the physical cell identity of the cell in which the terminal device is located is related to the first parameter and the second parameter, and the transceiver unit is further configured to:

the method further includes transmitting the SSS to the terminal device on a fourth time-frequency resource, the fourth time-frequency resource being different from the first time-frequency resource, the second parameter relating to the SSS.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the determining that the physical cell identity of the cell in which the terminal device is located is related to the first parameter includes:

alternatively, the first and second electrodes may be,

wherein, the

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

Is a natural number not greater than 503.

Optionally, the

May be the second parameter.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the frequency domain resources in the first time frequency resources include frequency domain resources in at least one of the following frequency bands:

in the fifth aspect of the embodiment of the present application, the constituent modules of the communication device may also be configured to execute the steps executed in each possible implementation manner of the first aspect, which may specifically refer to the first aspect, and are not described herein again.

A sixth aspect of the embodiments of the present application provides a communication apparatus, including a processing unit and a transceiver unit;

the transceiver unit is configured to receive a first synchronization signal sent from a network device on a first time-frequency resource, where the first synchronization signal is carried in the first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the processing unit is used for acquiring time-frequency synchronization according to the first synchronization signal.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the second part of the first synchronization signal is carried in a third time-frequency resource, where the third time-frequency resource is a part of time-frequency resources in the first time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource, and a sequence of the first part of the first synchronization signal is the same as a sequence of the second part of the first synchronization signal.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the first synchronization signal is a primary synchronization signal PSS, and a first part of the first synchronization signal is obtained by a first sequence and a first scrambling code.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the first sequence is a ZC sequence, and the first scrambling code is {1,1, 1,1, -1, -1, 1,1, 1, -1, 1 }.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the second time-frequency resource includes subframe No. 5 in a radio frame.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe No. 5.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the first synchronization signal is a secondary synchronization signal SSS, and the first portion of the first synchronization signal is obtained by the second sequence and the second scrambling code.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the second sequence is a ZC sequence, and the second scrambling code is a binary scrambling code with a length of 128.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the second time-frequency resource includes subframe 9 in an even radio frame.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 9.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the physical cell identifier of the cell in which the terminal device is located is related to a first parameter, where the first parameter is related to a relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the first synchronization signal is an SSS, and a physical cell identity of a cell in which the terminal device is located is related to a first parameter and a second parameter, where the second parameter is related to the first sequence and the first scrambling code.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the first synchronization signal is a PSS, the physical cell identity of the cell in which the terminal device is located is related to the first parameter and the second parameter, and the transceiver unit is further configured to:

receiving the SSS from the network device on a fourth time-frequency resource, the fourth time-frequency resource being different from the first time-frequency resource, the second parameter being related to the SSS number.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the determining that the physical cell identity of the cell in which the terminal device is located is related to the first parameter includes:

alternatively, the first and second electrodes may be,

wherein, the

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

Is a natural number not greater than 503.

Optionally, the

May be the second parameter.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the frequency domain resources in the first time frequency resources include frequency domain resources in at least one of the following frequency bands:

in the sixth aspect of the embodiment of the present application, the constituent modules of the communication device may also be configured to execute the steps executed in each possible implementation manner of the second aspect, and specifically refer to the second aspect, which is not described herein again.

A seventh aspect of the embodiments of the present application provides a communication apparatus, including a processing unit and a transceiver unit;

the processing unit is configured to determine a first system message, where the first system message is carried in a first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, where the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the transceiver is configured to transmit the first system message on the first time/frequency resource.

In a possible implementation manner, the second part of the first system message is carried in a third time-frequency resource, where the third time-frequency resource is a part of the first time-frequency resource, the third time-frequency resource is different from the second time-frequency resource, and the first part of the first system message is the same as the second part of the first system message.

In a possible implementation manner, the first part of the first system message is a system message scrambled by a target scrambling code, the initialization seed of the target scrambling code is related to a first parameter, and the first parameter is related to a physical cell identifier of a cell in which the terminal device is located.

In a possible implementation manner, the first system message is a master information block MIB carried on a physical broadcast channel PBCH, and the first parameter includes:

alternatively, the first and second electrodes may be,

wherein, the

Indicating a rounding down, the/indicates a divide operation.

In a possible implementation manner, the first parameter related to a physical cell identity of a cell in which the terminal device is located includes:

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

For the first parameter, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

Indicating a rounding down, the/indicates a divide operation.

In a possible implementation manner, the second time-frequency resource includes subframe No. 0 in a radio frame.

In one possible implementation, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 0.

In one possible implementation, the frequency domain resources in the first time frequency resources include frequency domain resources in at least one of the following frequency bands:

in the seventh aspect of the embodiment of the present application, the constituent modules of the communication device may also be configured to execute the steps executed in each possible implementation manner of the third aspect, and specifically, refer to the third aspect, which is not described herein again.

An eighth aspect of the embodiments of the present application provides a communication apparatus, including a processing unit and a transceiver unit;

the transceiver unit is configured to receive a first signal containing a first system message from a network device on a first time-frequency resource, where the first system message is carried in the first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource, where the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the processing unit is used for acquiring a system message according to the first signal.

alternatively, the first and second electrodes may be,

wherein, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

For the first parameter, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

Indicating a rounding down, the/indicates a divide operation.

in the eighth aspect of the embodiment of the present application, the constituent modules of the communication device may also be configured to execute the steps executed in each possible implementation manner of the fourth aspect, and specifically refer to the fourth aspect, which is not described herein again.

A ninth aspect of embodiments of the present application provides a communication apparatus, where the communication apparatus includes a processor, the processor is coupled with a memory, the memory is configured to store a computer program or instructions, and the processor is configured to execute the computer program or instructions in the memory, so that the method according to any one of the foregoing first aspect or any one of the foregoing possible implementations of the first aspect is performed, or so that the method according to any one of the foregoing third aspect or any one of the foregoing possible implementations of the third aspect is performed.

A tenth aspect of embodiments of the present application provides a communication apparatus, where the communication apparatus includes a processor coupled with a memory, the memory is configured to store a computer program or instructions, and the processor is configured to execute the computer program or instructions in the memory, so that the method described in any one of the foregoing second aspect or second aspect possible implementation manners is performed, or so that the method described in any one of the foregoing fourth aspect or fourth aspect possible implementation manners is performed.

An eleventh aspect of embodiments of the present application provides a communication apparatus, where the communication apparatus includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a computer program or instructions to perform a method according to the foregoing first aspect or any one of the possible implementations of the first aspect, or to perform a method according to any one of the possible implementations of the foregoing third aspect or third aspect.

A twelfth aspect of embodiments of the present application provides a communication apparatus, where the communication apparatus includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a computer program or instructions to cause the method according to any one of the foregoing second aspects or second possible implementations to be performed, or to cause the method according to any one of the foregoing fourth aspects or fourth possible implementations to be performed.

A thirteenth aspect of embodiments of the present application provides a computer-readable storage medium storing one or more computer-executable instructions, which, when executed by a processor, perform a method according to the first aspect or any one of the possible implementations of the first aspect, or any one of the possible implementations of the third aspect or the third aspect.

A fourteenth aspect of embodiments of the present application provides a computer-readable storage medium storing one or more computer-executable instructions, which, when executed by a processor, performs the method according to any one of the possible implementations of the second aspect or the second aspect, or performs the method according to any one of the possible implementations of the fourth aspect or the fourth aspect.

A fifteenth aspect of embodiments of the present application provides a computer program product (or computer program) storing one or more computers, where when the computer program product is executed by a processor, the processor executes the method according to the first aspect or any one of the possible implementation manners of the first aspect, or any one of the possible implementation manners of the third aspect.

A sixteenth aspect of embodiments of the present application provides a computer program product storing one or more computers, wherein when the computer program product is executed by a processor, the processor performs the method of any one of the second aspect or the second possible implementation manner, or the processor performs the method of any one of the fourth aspect or the fourth possible implementation manner.

A seventeenth aspect of the present embodiment provides a chip system, where the chip system includes a processor, and is configured to support a network device to implement the functions in the first aspect or any one of the possible implementations of the first aspect, or any one of the possible implementations of the third aspect or the third aspect. In one possible design, the system-on-chip may further include a memory, which stores program instructions and data necessary for the network device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

An eighteenth aspect of the present embodiment provides a chip system, where the chip system includes a processor, and is configured to support a terminal device to implement the functions in the second aspect or any one of the possible implementation manners of the second aspect, or any one of the possible implementation manners of the fourth aspect or the fourth aspect. In one possible design, the system-on-chip may further include a memory for storing necessary program instructions and data for the terminal device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

A nineteenth aspect of embodiments of the present application provides a communication system including the communication apparatus of the above-described fifth aspect and the communication apparatus of the sixth aspect, or the communication system includes the communication apparatus of the above-described seventh aspect and the communication apparatus of the eighth aspect, or the communication system includes the communication apparatus of the above-described ninth aspect and the communication apparatus of the tenth aspect, or the communication system includes the communication apparatus of the above-described eleventh aspect and the communication apparatus of the twelfth aspect.

For technical effects brought by the fifth, seventh, ninth, eleventh, thirteenth, fifteenth, seventeenth and nineteenth aspects or any one of possible implementation manners, reference may be made to technical effects brought by the first aspect or different possible implementation manners of the first aspect, or to technical effects brought by different possible implementation manners of the third aspect or the third aspect, and no further description is given here.

For example, the technical effect brought by any one of the sixth, eighth, tenth, twelfth, fourteenth, sixteenth, eighteenth and nineteenth aspects or any one of possible implementation manners of the sixth, eighth, tenth, twelfth, fourteenth, sixteenth, eighteenth and nineteenth aspects may refer to the technical effect brought by the second aspect or a different possible implementation manner of the second aspect, or refer to the technical effect brought by a different possible implementation manner of the fourth aspect or the fourth aspect, and is not described herein again.

According to the technical scheme, the method has the following advantages in some embodiments: in the first synchronization signal sent by the network device on the first time-frequency resource, the first synchronization signal carried on the first time-frequency resource is used for the first communication system, the first part of the first synchronization signal carried on the second time-frequency resource is used for the second communication system, and the second time-frequency resource is a part of the time-frequency resource of the first time-frequency resource. The first communication system and the second communication system are different communication systems, so that terminal devices corresponding to different communication systems can identify different synchronization signals through the first time-frequency resource. Compared with the case that the network device respectively sends different synchronous signals on different time-frequency resources aiming at different communication systems, the first synchronous signal sent by the network device on the first time-frequency resource can enable the terminal devices corresponding to different communication systems to access the network, thereby reducing the expenditure of network resources and device energy consumption caused by the fact that the network device sends different synchronous signals on different time-frequency resources and improving the communication efficiency.

Drawings

Fig. 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

fig. 2-1 is a schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 2-2 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 3 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 4 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a communication method according to an embodiment of the present application;

fig. 6-1 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 6-2 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 6-3 are another schematic diagrams of radio frame structures provided in the embodiments of the present application;

fig. 7-1 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 7-2 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 7-3 are another schematic diagrams of radio frame structures provided in the embodiments of the present application;

fig. 8-1 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 8-2 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 8-3 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 9-1 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 9-2 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 9-3 is another schematic diagram of a radio frame structure according to an embodiment of the present disclosure;

fig. 10 is another schematic diagram of a radio frame structure according to an embodiment of the present application;

fig. 11 is another schematic diagram of a communication method provided in an embodiment of the present application;

fig. 12 is another schematic diagram of a radio frame structure according to an embodiment of the present application;

fig. 13 is a schematic diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic diagram of another communication device provided in an embodiment of the present application;

fig. 15 is a schematic diagram of another communication device according to an embodiment of the present application.

Detailed Description

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

First, some terms in the embodiments of the present application are explained so as to be easily understood by those skilled in the art.

1. The terminal equipment: may be a wireless terminal device capable of receiving network device scheduling and indication information, which may be a device providing voice and/or data connectivity to a user, or a handheld device having wireless connection capability, or other processing device connected to a wireless modem.

The terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones), computers, and data cards, for example, mobile devices that may be portable, pocket, hand-held, computer-included, or vehicle-mounted, may communicate with one or more core networks or the internet via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), tablet computers (pads), and computers with wireless transceiving functions. A wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a Mobile Station (MS), a remote station (remote station), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a Subscriber Station (SS), a user terminal device (CPE), a terminal (terminal), a User Equipment (UE), a Mobile Terminal (MT), etc. The terminal device may also be a wearable device and a next generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, etc.

2. A network device: may be a device in a wireless network, for example, a network device may be a Radio Access Network (RAN) node (or device) that accesses a terminal device to the wireless network, which may also be referred to as a base station. Currently, some examples of RAN equipment are: a new generation base station (gbodeb), a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., a home evolved Node B or a home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wi-Fi) Access Point (AP) in a 5G communication system. In addition, in one network configuration, the network device may include a Centralized Unit (CU) node, or a Distributed Unit (DU) node, or a RAN device including a CU node and a DU node.

The network device can send configuration information (for example, carried in a scheduling message and/or an indication message) to the terminal device, and the terminal device further performs network configuration according to the configuration information, so that network configuration between the network device and the terminal device is aligned; or, the network configuration between the network device and the terminal device is aligned through the network configuration preset in the network device and the network configuration preset in the terminal device. In particular, "alignment" refers to the fact that when an interactive message exists between a network device and a terminal device, the two devices are consistent in understanding the carrier frequency of interactive messaging, the determination of the type of interactive message, the meaning of the field information carried in the interactive message, or other configurations of the interactive message.

Furthermore, the network device may be other means for providing wireless communication functionality for the terminal device, where possible. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. For convenience of description, the embodiments of the present application are not limited.

The network device may also include a core network device including, for example, an access and mobility management function (AMF), a User Plane Function (UPF), a Session Management Function (SMF), or the like.

In the embodiment of the present application, the apparatus for implementing the function of the network device may be a network device, or may be an apparatus capable of supporting the network device to implement the function, for example, a system on chip, and the apparatus may be installed in the network device. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a network device is taken as an example of a network device, and the technical solution provided in the embodiment of the present application is described.

3. The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a alone, A and B together, and B alone, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. And, unless specifically stated otherwise, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the order, sequence, priority, or importance of the plurality of objects.

Fig. 1 is a schematic diagram of a communication system according to the present application. In fig. 1, one

network device

101 and 6 terminal devices are exemplarily shown, and the 6 terminal devices are respectively a terminal device 102, a terminal device 103, a terminal device 104, a terminal device 105, a terminal device 106, a terminal device 107, and the like. In the example shown in fig. 1, the terminal device 102 is a vehicle, the terminal device 103 is an intelligent air conditioner, the terminal device 104 is an intelligent fuel dispenser, the terminal device 105 is a mobile phone, the terminal device 106 is an intelligent cup, and the terminal device 107 is a printer.

Among them, the communication system shown in fig. 1 can be applied to a Low Power Wide Area (LPWA) scenario. The LPWA refers to a low-power-consumption wide area network, and has three characteristics of long-distance communication, low-rate data transmission and low power consumption, so that the LPWA is very suitable for the application of the Internet of things which has the advantages of long-distance transmission, small communication data volume and long-time running of battery power supply. Among them, narrowband band internet of things (NB-IoT), enhanced machine type communication (eMTC), and Narrowband Band (NB) new air interface (NR) are typical internet of things technologies for LPWA.

In NB-IOT communication, the internet of things (IOT) is "internet of things connected". It expands the user end of Internet to any article for information exchange and communication. Such a communication method is also called Machine Type Communications (MTC), and a node for communication is called an MTC terminal. Typical applications of the internet of things include possible applications including various aspects of smart power grids, smart agriculture, smart transportation, smart home, and environmental detection. Since the internet of things needs to be applied in various scenes such as from outdoor to indoor, from above ground to underground, many special requirements are put on the design of the internet of things, including a plurality of items as described below.

(1) Coverage enhancement: many MTC applications are used in environments with poor coverage, such as electric meters and water meters, which are usually installed indoors or even in basements where wireless network signals are poor, and a coverage enhancement technology is needed to solve the problem.

(2) A large number of low rate devices are supported: the number of MTC devices is much larger than the number of devices communicating between people, but the data packets transmitted are small and not sensitive to latency.

(3) Very low cost: many MTC applications require MTC devices to be available and used at very low cost, enabling large-scale deployment.

(4) Low energy consumption: in most cases, MTC devices are powered by batteries. At the same time, however, in many scenarios MTC is required to be able to be used for more than a decade without requiring battery replacement. This requires that MTC devices be able to operate with very low power consumption.

Facing emerging applications such as MTC communication, smart cities, intelligent transportation, unmanned driving, Virtual Reality (VR) and Augmented Reality (AR), a 5G New Radio (NR) will support three applications, namely enhanced mobile bandwidth (eMBB), low-latency and high-reliability communication (URLLC) and large-scale internet of things (massive mobile communication, MTC). Currently 3GPP R15 and R16 NR are mainly directed to eMBB and URLLC applications. The eMBB deals with a human-centric usage scenario involving user access to multimedia content, services, and data. The eMBB will meet the demand for burst growth of data traffic and enhanced number of users, and provide better user experience, and can support higher rate and lower delay than a fourth generation (4G) communication network. Currently, a series of standardization works are performed for eMBB and URLLC scenarios, and for mtc, introduction of reduced capability (redundant access, redcp) redcp is being discussed in the industry, downlink synchronization considers multiplexing a synchronization signal/physical broadcast channel block (SS/PBCH block or SSB) in NR, SSB may also be referred to as a synchronization signal block or an initial access signal, and the main application scenario focuses on some non-LPWA scenarios, such as video monitoring, industrial internet of things, wearable devices, and the like.

Currently, a network device sends an initial access signal (SSB) to a terminal device, which can be used by the terminal device to complete synchronization in time and frequency with a cell to access the network device. Generally, the initial access signal is carried on a broadcast channel, and the initial access signal includes a synchronization signal and a system message. In an LPWA scenario, there are multiple different communication systems, and a network device needs to send different initial access signals in different time-frequency resources for the different communication systems, so as to enable terminal devices corresponding to the different communication systems to access the network device.

In an LPWA scenario, the synchronization signal obtained by the terminal device corresponding to the NB-IOT communication system includes a Narrowband Primary Synchronization Signal (NPSS) and a Narrowband Secondary Synchronization Signal (NSSS); the system messages include a Master Information Block (MIB) carried on a Narrowband Physical Broadcast Channel (NPBCH). Illustratively, the cell search process of the terminal device is a process in which the terminal device performs synchronization (i.e., frequency synchronization) in time and frequency with the cell base station through detection of a synchronization signal, and acquires a cell ID. The NB-IoT synchronization signals include NPSS, which is used to complete time and frequency domain synchronization, and NSSS, which carries 504 cell ID information and 80ms frame timing information (i.e., which radio frame in 80 ms).

FIG. 2-1 shows a schematic time-domain location diagram of NPSS, NSSS, and NPBCH in a radio frame, where NPSS is transmitted on subframe 5 of each radio frame, NSSS is transmitted on subframe 9 of an even radio frame, and NPBCH is transmitted on subframe 0 of each radio frame. NPSS, NSSS, NPBCH occupy the last 11 symbols of a subframe in a subframe.

There may be different implementations of

sub-frames

5 and 9 in different frame structures. For example, in a frame structure of a radio frame, which includes 10 subframes and numbers of the subframes are 0 to 9 (as shown in fig. 2-1), NPBCH may be carried in subframe No. 0, NPSS may be carried in subframe No. 5, and NSSS may be carried in subframe No. 9; taking a frame structure of a radio frame, which includes 10 subframes with numbers of subframes from 1 to 10 as an example, NPBCH may be carried in subframe No. 1, NPSS may be carried in subframe No. 6, and NSSS may be carried in subframe No. 10.

Furthermore, as shown in FIG. 2-2, a radio frame (n)_f) The number of (2) may be 0 to 1023, and the even radio frame refers to a radio frame whose radio frame number satisfies the following condition: n is_f mod 2 is 0, where n_fMod represents the remainder operation for the radio frame number. As shown in fig. 2-2, the

subframes

0, 2, 4, 6, 8.. 1022, etc. are even subframes, and the

subframes

1, 3, 5, 7, 9.. 1023, etc. are non-even subframes, or odd subframes.

Specific implementation procedures of NPSS, NSSS, and NPBCH will be exemplarily described below.

1) The example is illustrated with NPSS in subframe 5 of radio frame number 0 in fig. 2-1. The NPSS is designed based on a short sequence, the NPSS is carried on the last 11 OFDM symbols of the subframe 0, the sequence corresponding to each OFDM symbol is formed by scrambling a ZC sequence with the length of 11 through a scrambling code with the length of 11, and the sequence and the scrambling code meet the mode (1). Wherein the mode (1) includes:

in the mode (1), d_l(n) is the NPSS sequence, s (l) is the scrambling code, as shown in table 1 below, the cyclic prefix length is the implementation in the scenario of normal (normal), i.e. normal cyclic prefix, and n is 11,

a ZC sequence of length 11, u-5.

TABLE 1

2) The NSSS in subframe 9 of radio frame number 0 in fig. 2-1 is illustrated as an example. The NSSS is designed based on a long sequence and consists of a ZC sequence with the length of 131 and a binary scrambling sequence, and the ZC sequence and the binary scrambling sequence satisfy the mode (2). Wherein the mode (2) includes:

in the correlation parameter of the method (2), the following correlation relationship is satisfied:

n＝0,1,...,131；

n′＝n mod 131；

m＝n mod 128；

in the mode (2), d (n) is an NSSS sequence, b_q(m) is a binary scrambling sequence,

is a ZC sequence of length 131, u is the root factor of the ZC sequence, theta_fFor cyclic shift of ZC sequences, n_fIs the radio frame number.

Wherein, in binary scrambling code sequence b_qIn (m), m is 0 to 127, and different values of q correspond to b_q(m) is shown in Table 2. Furthermore, u and q are both related to the cell identity (cell ID) of NB-IoT, i.e., NB-IoT cell ID is jointly indicated by the root factor of the ZC sequence and the binary scrambling code sequence. Taking FIG. 2-2 as an example, n_fIs a radio frame number, and n_fCan be 0,1,2, …,1023 at n_fValues of 0,8,16, …, 1016, theta_fThat is, when the radio frame length is 10ms, the boundary with the corresponding time length of 80ms in each 8 radio frames can be cyclically shifted by θ_fAnd (4) indicating.

TABLE 2

3) The example is described with respect to NPBCH located in subframe 0 of radio frame number 0 in fig. 2-1. To support In-band (In-band) deployments, NPBCH needs to avoid collision with certain LTE signals/channels of LTE. Specifically, in one subframe, the NPBCH avoids downlink reference signals of LTE, that is, cell-specific reference signal (CRS) positions, such as invalid REs reserved by an LTE control region and CRS shown in fig. 3, that is, CRS positions in the first 3 OFDM symbols and the last 11 OFDM symbols; also, the NPBCH avoids NB-IoT downlink reference signal (NRS) positions, such as NRS port 0(NRS port0) and NRS port 1(NRS port1), as shown in fig. 3.

The NPBCH is used for bearing the MIB. Illustratively, the MIB may have a total of 34 bits (bits), plus 16 bits of check bits, such as a Cyclic Redundancy Check (CRC), for a total of 50 bits. 1600 bits are obtained after channel coding and rate matching. And then scrambling at bit level, segmenting the bit after scrambling at bit level, and dividing into 8 coding sub-blocks with the size of 200 bits. Quadrature Phase Shift Keying (QPSK) modulation is used for each coded sub-block. And then scrambled at symbol level (symbol) level. As shown in fig. 4. Each coded sub-block is transmitted repeatedly 8 times in every 80ms period, i.e. one transmission of the corresponding coded sub-block on each sub-frame 0 in 80 ms.

In Bit-level scrambling, rate-matched bits are scrambled using a cell-specific scrambling (scrambling) sequence that satisfies radio frame initialization with a System Frame Number (SFN) mod 64 equal to 0. The initialization seeds of the Bit-level scrambling code are as follows:

where "mod" represents the remainder operation,

for NB-IoT cell ID, the Bit-level scrambling sequence is initialized every 640ms, resulting in a length of 1600.

In Symbol level scrambling, each coded sub-block is modulated by QPSK to obtain a Symbol with a length of 100, and is scrambled by using a cell-specific Symbol level scrambling code scrambling sequence, wherein the Symbol level scrambling code sequence satisfies the mode (3). Wherein the mode (3) includes:

in the mode (3), c_f(j) J ═ 0.. 199 is a Gold sequence that is initialized at each radio frame with the initialization seed:

wherein the content of the first and second substances,

for NB-IoT cell ID, n_f"mod" represents the remainder operation for the radio frame number.

In this case, in the NB-IOT communication system, the bandwidth size of the frequency domain resource for carrying the initial access signal is 1 Physical Resource Block (PRB). In order to meet the requirements of explosive growth of data traffic and enhanced number of users, in other application scenarios of LPWA, taking narrowband NR as an example, the bandwidth size of a narrowband NR communication system is much larger than the bandwidth size of 1 PRB, for example, 10 PRB bandwidth size, or 20 PRB bandwidth size, or larger PRB bandwidth size. This results in that the network device needs to transmit different initial access signals, such as different primary synchronization signals, different secondary synchronization signals, and different primary information blocks, on different time-frequency resources for the NB-IOT communication system and the narrowband NR communication system, so as to respectively enable the terminal device corresponding to the NB-IOT and the terminal device corresponding to the narrowband NR to access the network device.

However, for the initial access signals of different communication systems, the network device needs to be loaded on different time-frequency resources to transmit respectively, that is, the network device needs to transmit different initial access signals for multiple times in the process of accessing the terminal device to the network device, which easily causes large overhead of network resources of the network device and energy consumption of the device, and affects communication efficiency.

In order to solve the above technical problems, embodiments of the present application provide various solutions, which can be implemented separately from different aspects of solving the problems, and are described in detail below.

Fig. 5 is a schematic diagram of a communication method in an embodiment of the present application, and as shown in fig. 5, the communication method includes the following steps.

S101, the network equipment determines a first synchronization signal.

In this embodiment, a network device determines a first synchronization signal, where the first synchronization signal is carried in a first time-frequency resource, a first portion of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a portion of the first time-frequency resource. Wherein the first synchronization signal is for a first communication system, a first portion of the first synchronization signal is for a second communication system, and the first communication system and the second communication system are different communication systems.

In a possible implementation manner, the first time-frequency resource carrying the first synchronization signal may further include a third time-frequency resource, wherein the second portion of the first synchronization signal is carried in the third time-frequency resource, the third time-frequency resource is a portion of the first time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource.

Wherein the sequence of the first part of the first synchronization signal and the sequence of the second part of the first synchronization signal may be the same. Specifically, a first part of the first synchronization signal is carried on the second time frequency resource, a second part of the first synchronization signal is carried on the third time frequency resource, and a sequence of the first part of the first synchronization signal is the same as a sequence of the second part of the first synchronization signal, so that at least two parts of the first synchronization signal carry the same sequence.

Furthermore, the sequence of the first portion of the first synchronization signal and the sequence of the second portion of the first synchronization signal may be different. Specifically, a first part of the first synchronization signal is carried on the second time frequency resource, a second part of the first synchronization signal is carried on the third time frequency resource, and a sequence of the first part of the first synchronization signal is different from a sequence of the second part of the first synchronization signal, so that at least two parts of the first synchronization signal carry different sequences. The possibility of more variation of the sequence of the second part of the first synchronization signal than in the way that different parts carry the same sequence in the first synchronization signal can be made, not just limited to being identical to the sequence of the first part of the first synchronization signal.

In step S101, the first synchronization signal determined by the network device is used for the terminal device of the first communication system to perform network communication, and the first part of the first synchronization signal is used for the terminal device of the second communication system to perform network communication. The physical cell identifier of the cell in which the terminal device of the first communication system is located is related to a first parameter, where the first parameter is related to a relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code.

Specifically, the physical cell identifier of the cell in which the terminal device is located is related to a first parameter, and the first parameter may specifically be a value that is different according to different implementation manners of the first synchronization signal. The first parameter may be related to a relative position of the second time-frequency resource in the first time-frequency resource, for example, values of different first parameters are determined according to a difference in height of the relative position; alternatively, the first parameter may relate to a third scrambling code, and the first synchronization signal may be a signal scrambled by the third scrambling code, e.g. a different first parameter may be determined depending on the third scrambling code. Namely, various values of the first parameter can be determined through different implementation modes of the first synchronization signal.

In a possible implementation manner, in step S101, since the first synchronization signal determined by the network device is carried in the first time-frequency resource, the first part of the first synchronization signal is carried in the second time-frequency resource, and the second time-frequency resource is a part of the time-frequency resources in the first time-frequency resource. Thus, the network bandwidth for the first communication system may be greater than the network bandwidth for the second communication system. Specifically, the first communication system may be an NR, narrowband NR, or other communication system, and the second communication system may be an NB-IOT, eMTC, or other communication system.

Illustratively, the first communication system to which the first synchronization signal is applied is a narrowband NR, and the second communication system to which the first part of the first synchronization signal is applied is an NB-IOT. In the following examples, the first synchronization signal may be a primary synchronization signal PSS or a secondary synchronization signal SSS, which will be described separately below.

The first synchronization signal is a primary synchronization signal PSS.

In one possible implementation, when the first synchronization signal is the primary synchronization signal PSS in the narrowband NR, the sequence of the first part of the first synchronization signal is generated or obtained in the same manner as the sequence of the NPSS in the NB-IOT, where the NPSS is obtained from the first sequence and the first scrambling code. In NPSS, the first sequence is a ZC sequence, and the length of the ZC sequence may be 11. As shown in table 1, in a scenario where the cyclic prefix length is normal (normal), that is, the normal cyclic prefix, the first scrambling code is {1,1, 1,1, -1, -1, 1,1 }; in a scenario where the cyclic prefix length is extended (extended), that is, the cyclic prefix is extended, the first scrambling code may be another value, which is not limited herein. In addition, the implementation of NPSS can refer to table 1 and the related implementation process of table 1, which are not described herein again.

In a possible implementation process of the second time-frequency resource, the second time-frequency resource bearing the NPSS includes a subframe 5 in a radio frame, that is, a subframe 5 in each radio frame, and a time domain position of the second time-frequency resource may specifically be the last 11 OFDM symbols in 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the subframe 5. Specifically, the System Frame Number (SFN) is a Number of a radio Frame or a System Frame, and the Number of the specific System Frame is in a range of 0,1,2, …, and 1023, as shown in fig. 2-2. Each radio frame or system frame includes 10 subframes, and the number range of specific subframes is 0,1,2, …, 9. For the NR system, 1 slot (slot) includes 14 OFDM symbols, and in case of a subcarrier spacing of 15 kilohertz (kHz), the length of 1 slot is 1ms, and at this time, the subframe length is equal to the slot length equal to 1 ms. Therefore, in the case where the subcarrier spacing is 15kHz, the subframe and the slot in the present embodiment may be equivalently replaced. Taking a frame structure of a radio frame, which includes 10 subframes with numbers of 0 to 9 (as shown in fig. 2-1), the second time-frequency resource carrying the NPSS may specifically include a number 5 subframe or a timeslot; taking a frame structure of a radio frame, which includes 10 subframes with numbers of subframes from 1 to 10 as an example, the second time-frequency resource carrying the NPSS may specifically include a number 6 subframe or a time slot; in addition, the subframe number of the second time-frequency resource used for carrying the NPSS may also be other values in a scenario where different radio frame structures are implemented, and is not limited herein.

In a possible implementation process of the first time-frequency resource, a PSS carried by the first time-frequency resource occupies a plurality of continuous Resource Blocks (RBs) in a frequency domain, where an RB refers to 12 subcarriers in the frequency domain. The PSS occupies at least one subframe in a time domain, and a first time-frequency resource occupied by the PSS comprises a second time-frequency resource. The second time-frequency resource is used for carrying the first part of the first synchronization signal, and the sequence of the first part of the first synchronization signal may be the same as the NPSS. I.e., the first portion of the first time-frequency resource, the sequences carried on the last 11 OFDM symbols in each subframe are composed of ZC sequences and scrambling codes scrambling in NPSS.

Fig. 6-1 is a schematic diagram of a radio frame with a PSS as a first synchronization signal, wherein the first time/frequency resource is used for carrying the first synchronization signal, and the first synchronization signal at least includes a first part and a second part. In fig. 6-1, the PSS occupies a plurality of consecutive RBs in the frequency domain, each RB can be regarded as a different part of the first synchronization signal, i.e., "shaded block NPSS" is the first part of the first synchronization signal and "blank block NPSS" is the second part of the first synchronization signal in fig. 6-1.

In the scheme shown in fig. 6-1, the first time-frequency resource occupied by the PSS includes a second time-frequency resource and a third time-frequency resource, the sequence carried on the second time-frequency resource is the same as the generation mode or the acquisition mode of the NPSS, and the sequence carried on the third time-frequency resource is also the same as the generation mode or the acquisition mode of the NPSS. Specifically, the PSS occupies at least one subframe in the time domain, and since the NPSS occupies only the last 11 OFDM symbols of the 14 OFDM symbols, the sequence on each RB in the two RBs is the same as the NPSS, and occupies the last 11 OFDM symbols of the 14 OFDM symbols in 1 subframe. I.e. the sequence of the first part of the first synchronization signal is identical to the sequence of the second part of the first synchronization signal, which can be directly copied (copy) from the second part of the first synchronization signal.

Fig. 6-2 is a schematic diagram of another radio frame in which the first synchronization signal is PSS, wherein the first time-frequency resource is used for carrying the first synchronization signal, and the first synchronization signal at least includes a first portion and a second portion. In fig. 6-2, the PSS occupies a plurality of consecutive RBs in the frequency domain, each RB can be regarded as a different part of the first synchronization signal, i.e. "hatched block NPSS" is the first part of the first synchronization signal and "blank block new sequence design" is the second part of the first synchronization signal in fig. 6-2.

In the scheme shown in fig. 6-2, the PSS occupies at least one subframe in the time domain, the first time-frequency resource occupied by the PSS includes a second time-frequency resource and a third time-frequency resource, the sequence carried on the second time-frequency resource is the same as the NPSS in the generation manner or the acquisition manner, and the sequence carried on the third time-frequency resource is different from the NPSS in the generation manner or the acquisition manner. Specifically, the PSS occupies two RBs in the frequency domain, and occupies 1 subframe in the time domain, wherein one of the sequences carried on the second time-frequency resource, which is composed of 1 RB in the frequency domain and 1 subframe in the time domain, has the same generation manner or acquisition manner as the NPSS, and the other carries a newly designed sequence on the third time-frequency resource, which is composed of 1 RB in the frequency domain and 1 subframe in the time domain.

Optionally, the second time-frequency resource may be a carrier sequence of the last 11 OFDM symbols, which is idle, i.e., does not carry any sequence, and the NPSS generation mode or the acquisition mode is the same, and the third time-frequency resource carries a new sequence;

optionally, the second time-frequency resource may be a sequence carried by the last 11 OFDM symbols and have the same generation mode or acquisition mode as the NPSS, the first 3 OFDM symbols are idle, the third time-frequency resource carries a new sequence, the new sequence includes a sequence 1 carried by the first 3 OFDM symbols, and the sequence carried by the last 11 OFDM symbols and the NPSS have the same generation mode or acquisition mode;

optionally, the second time-frequency resource may be a sequence carried by the last 11 OFDM symbols and the same as the generation manner or the acquisition manner of the NPSS, where the first 3 OFDM symbols are sequence 1, and the third time-frequency resource carries a new sequence;

optionally, the second time-frequency resource may be a sequence carried by the last 11 OFDM symbols and have the same generation manner or acquisition manner as the NPSS, the first 3 OFDM symbols are sequence 1, the third time-frequency resource carries a new sequence, the new sequence includes sequence 2 carried by the first 3 OFDM symbols, and the sequence carried by the last 11 OFDM symbols and have the same generation manner or acquisition manner as the NPSS. The sequences carried on the first 3 OFDM symbols of the second time-frequency resource and the third time-frequency resource may be the same or different.

And the second synchronous signal is an auxiliary synchronous signal SSS.

In a possible implementation manner, when the first synchronization signal is the secondary synchronization signal SSS in the narrowband NR, a generation manner or an acquisition manner of the first portion of the first synchronization signal may be the same as a generation manner or an acquisition manner of NSSS in the NB-IOT, where NSSS is obtained by the second sequence and the second scrambling code. In NSSS, the second sequence is a ZC sequence of length 131, and the second scrambling code is a binary scrambling code. For implementation of NSSS, reference may be made to table 2 and the related implementation process in table 2, which are not described herein again.

In a possible implementation process of the second time-frequency resource, the second time-frequency resource bearing the NSSS includes a subframe 9 in an even-numbered radio frame, that is, a subframe 9 in each even-numbered radio frame, and a time domain position of the second time-frequency resource may specifically be the last 11 OFDM symbols in 14 OFDM symbols in the subframe 9. The System Frame Number (SFN) is a Number of a radio Frame or a System Frame, and the Number of a specific System Frame is in a range of 0,1,2, …, and 1023, as shown in fig. 2-2. Each radio frame or system frame includes 10 subframes, and the number range of specific subframes is 0,1,2, …, 9. For the NR system, 1 slot (slot) includes 14 OFDM symbols, and in case of a subcarrier spacing of 15 kilohertz (kHz), the length of 1 slot is 1ms, and at this time, the subframe length is equal to the slot length equal to 1 ms. Therefore, in the case where the subcarrier spacing is 15kHz, the subframe and the slot in the present embodiment may be equivalently replaced. Taking a frame structure of a radio frame, which includes 10 subframes with numbers of 0 to 9 (as shown in fig. 2-1), the second time-frequency resource carrying the NSSS may specifically include a number 9 subframe or a time slot; taking a frame structure of a radio frame, which includes 10 subframes with the number of subframes being 1 to 10 as an example, the second time-frequency resource carrying the NSSS may specifically include a number 10 subframe or a time slot; in addition, the subframe number of the second time-frequency resource used for carrying the NSSS may also be other values in a scenario where different radio frame structures are implemented, and is not limited herein.

In a possible implementation process of the first time-frequency resource, the SSS carried by the first time-frequency resource occupies a plurality of consecutive RBs in a frequency domain, where an RB refers to 12 subcarriers in the frequency domain. The SSS occupies at least one subframe in a time domain, and first time-frequency resources occupied by the SSS comprise second time-frequency resources. The second time-frequency resource is used for carrying the first part of the first synchronization signal, and the sequence of the first part of the first synchronization signal may be the same as NSSS. I.e., the first portion of the first time-frequency resource, the sequences carried on the last 11 OFDM symbols in each subframe are scrambled by the ZC sequence and the binary scrambling code in NSSS.

Fig. 8-1 is a radio frame diagram of the first synchronization signal being SSS, where the first time-frequency resource is used to carry the first synchronization signal, and the first synchronization signal includes at least a first portion and a second portion. In fig. 8-1, the SSS frequency domain occupies a plurality of consecutive RBs, each RB can be regarded as a different part of the first synchronization signal, i.e., "shaded block NSSS" is the first part of the first synchronization signal and "blank block NSSS" is the second part of the first synchronization signal in fig. 8-1.

In the scheme shown in fig. 8-1, the first time-frequency resource occupied by the SSS includes a second time-frequency resource and a third time-frequency resource, a sequence carried on the second time-frequency resource is the same as a generation manner or an acquisition manner of the NSSS, and a sequence carried on the third time-frequency resource is also the same as a generation manner or an acquisition manner of the NSSS. Specifically, the SSS occupies at least one subframe in the time domain, and since the NSSS occupies only the last 11 OFDM symbols of the 14 OFDM symbols, the sequence on each RB in the two RBs is the same as the NSSS, and both occupy the last 11 OFDM symbols of the 14 OFDM symbols in 1 subframe. I.e. the sequence of the first part of the first synchronization signal is identical to the sequence of the second part of the first synchronization signal, which can be directly copied (copy) from the second part of the first synchronization signal.

Fig. 8-2 is another radio frame diagram of the first synchronization signal being SSS, where the first time-frequency resource is used to carry the first synchronization signal, and the first synchronization signal includes at least a first portion and a second portion. In fig. 8-2, the SSS occupies a plurality of consecutive RBs in the frequency domain, each RB can be considered as a different part of the first synchronization signal, i.e. "shaded block NSSS" is the first part of the first synchronization signal and "blank block new sequence design" is the second part of the first synchronization signal in fig. 8-2.

In the scheme shown in fig. 8-2, the SSS occupies at least one subframe in the time domain, the first time-frequency resource occupied by the SSS includes a second time-frequency resource and a third time-frequency resource, a sequence carried on the second time-frequency resource is the same as a generation manner or an acquisition manner of the NSSS, and a sequence carried on the third time-frequency resource is different from a generation manner or an acquisition manner of the NSSS. Specifically, the SSS occupies two RBs in the frequency domain, 1 subframe in the time domain, one of the RBs and the sub-frame in the frequency domain carries a sequence on the second time-frequency resource in the same manner as the NSSS or in the same manner as the NSSS, and the other one of the RB and the sub-frame in the frequency domain carries a newly designed sequence on the third time-frequency resource.

Optionally, the second time-frequency resource may be a carrier sequence of the last 11 OFDM symbols, which is idle, i.e., does not carry any sequence, and the NSSS generation mode or the acquisition mode is the same, and the third time-frequency resource carries a new sequence;

optionally, the second time-frequency resource may be a sequence carried by the last 11 OFDM symbols and have the same generation manner or acquisition manner as the NSSS, the first 3 OFDM symbols are idle, the third time-frequency resource carries a new sequence, the new sequence includes a sequence 1 carried by the first 3 OFDM symbols, and the sequence carried by the last 11 OFDM symbols and the generation manner or acquisition manner of the NSSS are the same;

optionally, the second time-frequency resource may be a sequence carried by the last 11 OFDM symbols and the NSSS may be generated or obtained in the same manner, where the first 3 OFDM symbols are sequence 1, and the third time-frequency resource carries a new sequence;

optionally, the second time-frequency resource may be a sequence carried by the last 11 OFDM symbols and have the same generation manner or acquisition manner as the NSSS, the first 3 OFDM symbols are sequence 1, the third time-frequency resource carries a new sequence, the new sequence includes sequence 2 carried by the first 3 OFDM symbols, and the sequence carried by the last 11 OFDM symbols and have the same generation manner or acquisition manner as the NSSS. The sequences carried on the first 3 OFDM symbols of the second time-frequency resource and the third time-frequency resource may be the same or different.

In one possible implementation, the frequency domain resources in the first time frequency resources include frequency domain resources in at least one of the following frequency bands: n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n28, n41, n65, n66, n70, n71, n74, n 90. Wherein the frequency domain resource in the first time frequency resource includes a frequency resource in the at least one frequency band, that is, the first communication system and the second communication system can be applied to the at least one frequency band.

Generally, a frequency band refers to a range of frequencies, and the implementation process in the above-mentioned at least one frequency band can refer to the content of table 3. In table 3, the network device is a Base Station (BS), the terminal device is a UE as an example, and the first column is an NR operating band (NR operating band), that is, the at least one frequency band; the second column is an Uplink operating band (Uplink operating band), i.e. a range from low frequency to high frequency (BS receive/UE transmit F) transmitted by the BS/UE_UL,low-F_UL,high) In megahertz (MHz); the third column is the Downlink operating band (Downlink operating band), i.e. the range from low frequency to high frequency (BS receive ^ er) transmitted by BS/received by UEUE transmit F_DL,low-F_DL,high) In megahertz (MHz); the fourth column is Duplex mode (Duplex mode), and the values may be Frequency Division Duplex (FDD) and Time Division Duplex (TDD).

Among them, regulations are made to unify frequency ranges of communication systems such as LTE and NR. Such as the specification of the new air interface NR protocol TS38.1045.2 section (Table 5.2-1) regarding the frequency band. Wherein each frequency band has its specific number, the frequency bands numbered n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n28, n41, n65, n66, n70, n71, n74, n90 as described above may be used to deploy NB-IoT. Each frequency band has a corresponding frequency range, and can be subdivided into an uplink frequency range and a downlink frequency range, and both the transmission of the network device and the reception of the terminal device need to be performed in the corresponding frequency range of the supported frequency band.

TABLE 3

Specifically, here, the first communication system to which the first synchronization signal is applied is a narrowband NR, and the second communication system to which the first part of the first synchronization signal is applied is an NB-IOT. For example, the NB-IoT supported narrowband NR deployed frequency bands include n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n28, n41, n65, n66, n70, n71, n74, n 90. Controlling the first time-frequency resource to be applicable to all or part of the at least one frequency band can make the first part of the first signal carried on the first time-frequency resource compatible with the transmission of NPSS, NSSS, NPBCH of NB-IOT. Specifically, referring to table 4, table 4 shows an implementation process of a partial frequency band, and in table 4, "NR operating band" indicates a frequency band supported by NR; "SS Block SCS" denotes the subcarrier spacing of the SSB in kilohertz (kHz); the value "Y" indicates "yes" and the value N indicates "no".

As shown in table 4 below, only the frequency bands supported by partial NR are taken as an example, where NB-IoT supports some partial frequency bands, i.e., the 3 rd column in table 4 takes the value of "Y" corresponding to the frequency band. In this embodiment, the synchronization signal may be received and transmitted according to the implementation manners of the embodiments shown in fig. 5 to 10 corresponding to the partial frequency bands supported by the NB-IoT, that is, the synchronization signal may be received and transmitted according to the implementation manners of the embodiments shown in fig. 5 to 10 in the frequency band corresponding to the 4 th column with the value "Y" in table 4. The synchronization signals may be transmitted and received according to different implementation manners from the embodiments shown in fig. 5 to 10, that is, the synchronization signals are transmitted and received according to a new design scheme of the synchronization signals in the frequency band corresponding to the 4 th column with the value "N" in table 4. The corresponding NB-IoT unsupported frequency band, i.e., the frequency band corresponding to the 3 rd column with the value "N" in table 4, may transceive the synchronization signal in a different implementation manner from the embodiments shown in fig. 5 to 10, i.e., transmit the synchronization signal according to a new design scheme of the synchronization signal.

TABLE 4

S102, the network equipment sends a first synchronization signal to the terminal equipment on the first time-frequency resource.

In this embodiment, after determining the first synchronization signal in step S101, the network device sends the first synchronization signal to the terminal device on the first time-frequency resource. Accordingly, in step S102, the terminal device receives a first synchronization signal from the network device on the first time/frequency resource.

After the network device processes the first synchronization signal according to a preset scrambling method, the network device sends the processed first synchronization signal to the terminal device in step S102. Accordingly, the terminal device obtains the first synchronization signal in step S102 by using a configured or preconfigured descrambling method, and the like, so as to perform the subsequent steps according to the first synchronization signal. Specifically, the configuration means that the base station or the server sends configuration information of some parameters or values of the parameters to the terminal through a message or a signaling, so that the terminal determines communication parameters or resources during transmission according to the values or the information. The pre-configuration is similar to the configuration, and can be a mode that a base station or a server sends parameter information or values to a terminal through another link or carrier different from a sidelink; or corresponding parameters or parameter values may be defined, or related parameters or values may be written in the terminal device in advance. This is not limited in this application.

S103, the terminal equipment acquires time-frequency synchronization according to the first synchronization signal.

In this embodiment, after receiving the first synchronization signal in step S102, the terminal device obtains time-frequency synchronization according to the first synchronization signal.

The terminal device of the narrowband NR may obtain time-frequency synchronization according to the first synchronization signal, and the terminal device of the NB-IOT may obtain time-frequency synchronization according to the first part of the first synchronization signal.

Specifically, the process of the terminal device of the narrowband NR obtaining the time-frequency synchronization according to the first synchronization signal may include that, in order to detect the first synchronization signal, the terminal device of the narrowband NR generates a local first synchronization signal according to the scheme of this embodiment, where the local first synchronization signal is used for performing a correlation operation with the first synchronization signal received by the terminal device. For example, the correlation operation may be performed by the terminal device performing a dot product operation according to the received first synchronization signal and the corresponding position of the local first synchronization signal, so as to obtain a correlation peak. Thereafter, the terminal device of the narrowband NR determines that the first synchronization signal is detected by the correlation peak obtained after the correlation operation, because the signal position of the first synchronization signal is pre-configured at the terminal device, the terminal device of the narrowband NR can acquire time synchronization by the time position of the detected first synchronization signal, and acquire frequency synchronization by the frequency domain position of the detected first synchronization signal.

Correspondingly, the process of the NB-IoT terminal device acquiring the time-frequency synchronization according to the first part of the first synchronization signal may include that, in order to detect the first part of the first synchronization signal, the NB-IoT terminal device determines a local sequence of the first part of the first synchronization signal according to the scheme of the embodiment, where the local sequence of the first part of the first synchronization signal is used for performing a correlation operation with the first part of the first synchronization signal received by the terminal device. For example, the correlation operation may be performed by the terminal device performing a dot product operation according to the received first part of the first synchronization signal and the local sequence corresponding position of the first part of the first synchronization signal, so as to obtain a correlation peak. Thereafter, the terminal device of NB-IoT determines that the first part of the first synchronization signal is detected by the correlation peak obtained after the correlation operation, because the signal position of the first part of the first synchronization signal is pre-configured at the terminal device, the terminal device can acquire time synchronization by the time position of the detected first part of the first synchronization signal, and further acquire frequency synchronization by the frequency domain position of the detected first part of the first synchronization signal.

In addition, the terminal device of the narrowband NR may determine the physical cell identity of the located cell through the first synchronization signal on the first time-frequency resource. As can be seen from step S101, the first synchronization signal may be a PSS or an SSS, and the process of acquiring the physical cell identifier of the cell where the terminal device is located in these two scenarios will be described in detail below. It should be noted that, here, the first communication system to which the first synchronization signal is applied is a narrowband NR, and the second communication system to which the first part of the first synchronization signal is applied is an NB-IOT.

The first synchronization signal is a primary synchronization signal PSS.

In one possible implementation, since there are 1008 cell IDs of narrowband NR, 0,1, …, 1007, and there are 504 current cell IDs of NB-IoT, 0,1, …, 503. For narrowband NR, a physical cell identity of a cell in which a terminal device is located is related to a first parameter and a second parameter, and the physical cell identity of the cell in which the terminal device is located is related to the first parameter and the second parameter, including:

alternatively, the first and second electrodes may be,

wherein, the

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

May be the second parameter, and

is a natural number not greater than 503.

In one possible implementation of the second parameter, before step S103, the network device transmits SSS to the terminal device on a fourth time-frequency resource, the fourth time-frequency resource being different from the first time-frequency resource, the second parameter relating to the SSS. Accordingly, before step S103, the terminal device receives the SSS transmitted from the network device on the fourth time-frequency resource, and determines the second parameter according to the SSS

Specifically, the SSS carried on the fourth time-frequency resource occupies at least one subframe in the time domain, the time-frequency resource occupied by the SSS includes at least one time-frequency resource, and a sequence carried on the at least one time-frequency resource is the same as a generation manner or an acquisition manner of the NSSS. For the narrowband NR UE, the sequence carried on the at least one time-frequency resource may be determined by means (4). Wherein the mode (4) includes:

in the related parameters of the method (4), the following association relationship is satisfied:

n＝0,1,...,131；

n′＝n mod 131；

m＝n mod 128；

wherein d (n) is a sequence carried on at least one time frequency resource on the fourth time frequency resource, b_q(m) is a binary scrambling sequence, as shown in Table 2, with n' taking the value 131,

is a cyclically shifted sequence of a ZC sequence,

is a ZC sequence with the length of 131, u is a root factor of the ZC sequence, u and q are both equal

In connection with, i.e. with

And jointly indicating through a root factor of the ZC sequence and the binary scrambling code sequence. The terminal equipment determines a second parameter according to the SSS

In a possible implementation of the first parameter, the first parameter may be determined by a relative position of a frequency domain resource where a sequence with a same generation manner or acquisition manner as the NPSS is located in the frequency domain resource where the PSS is located, that is, the first parameter is determined by a relative position of the second time-frequency resource in the first time-frequency resource.

Optionally, when the frequency domain resource in which the sequence with the same generation mode or acquisition mode as the NPSS is located at a relatively low frequency position in the frequency domain resource in which the PSS is located, that is, in step S101, when the second time-frequency resource is located at a relatively low frequency position in the first time-frequency resource, the value k corresponding to the first parameter is 0; when the frequency domain resource carrying the sequence in the same manner as the NPSS generation manner or the acquisition manner is located at the relatively high frequency position in the frequency domain resource in which the PSS is located, that is, in step S101, when the second time frequency resource is located at the relatively high frequency position in the first time frequency resource, the value k corresponding to the first parameter is 1.

Specifically, if the first time-frequency resource includes 2 RBs and the second time-frequency resource includes 1 RB, the implementation manner may be as shown in fig. 6-1 and 6-2. Wherein, the relative low frequency of the second time frequency resource in the first time frequency resource means: the second time-frequency resource is positioned in the low-frequency RB of the first time-frequency resource, and at the moment, the value of k is 0; the relative high frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is located in the high-frequency RB of the first time-frequency resource, and at this time, the value of k is 1.

In addition, if the first time-frequency resource includes N RBs and the second time-frequency resource includes 1 RB, the implementation manner shown in fig. 6-3 may be implemented, where the relatively low frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is positioned at the low frequency of the first time-frequency resource

In one RB or

In each RB, the value of k is 0; the relatively high frequency of the second time-frequency resource in the first time-frequency resource means that the second time-frequency resource is at the high frequency of the first time-frequency resource

In one RB or

In each RB, k takes a value of 1. Wherein the content of the first and second substances,

meaning that the rounding is done down,

indicating rounding up.

Optionally, when the frequency domain resource in which the sequence with the same generation mode or acquisition mode as the NPSS is located at a relatively low frequency position in the frequency domain resource in which the PSS is located, that is, in step S101, when the second time-frequency resource is located at a relatively low frequency position in the first time-frequency resource, the value k corresponding to the first parameter is 1; when the frequency domain resource carrying the sequence in the same manner as the NPSS generation manner or the acquisition manner is located at the relatively high frequency position in the frequency domain resource in which the PSS is located, that is, in step S101, when the second time frequency resource is located at the relatively high frequency position in the first time frequency resource, the value k corresponding to the first parameter is 0.

Specifically, if the first time-frequency resource includes 2 RBs and the second time-frequency resource includes 1 RB, the implementation manner may be as shown in fig. 7-1 and fig. 7-2. Wherein, the relative low frequency of the second time frequency resource in the first time frequency resource means: the second time-frequency resource is positioned in the low-frequency RB of the first time-frequency resource, and at the moment, the value of k is 1; the relative high frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is located in the high-frequency RB of the first time-frequency resource, and at this time, the value of k is 0.

In addition, if the first time-frequency resource includes N RBs and the second time-frequency resource includes 1 RB, the implementation manner shown in fig. 7-3 may be implemented, where the relatively low frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is positioned at the low frequency of the first time-frequency resource

In one RB or

In each RB, the value of k is 1; the relative high frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is at high frequency of the first time-frequency resource

In one RB or

In each RB, k takes a value of 0. Wherein the content of the first and second substances,

meaning that the rounding is done down,

indicating rounding up.

In another possible implementation of the first parameter, the PSS carried on the first time-frequency resource may be obtained by scrambling with a third scrambling code, where the third scrambling code may be an orthogonal code (OCC), a predetermined pseudo-random sequence that may also be configured in advance, or another scrambling code, which is not limited herein.

Specifically, taking the implementation that the third scrambling code is OCC as an example, in general, in order to avoid parsing errors of the NB-IOT terminal device caused by processing NPSS using OCC in the time domain, OCC may be introduced in the frequency domain. Different OCCs are configured for RBs with different frequency domains on the first time-frequency resource, and the first parameter is determined through the OCCs. Taking the example that the first time-frequency resource includes 2 RBs, an OCC with a length of 2 is correspondingly adopted, and when { W0, W1} ═ 1,1}, a value k corresponding to the first parameter is 0; when { W0, W1} ═ 1, -1}, the value k corresponding to the first parameter is 1. Or, when { W0, W1} ═ 1,1}, the value k corresponding to the first parameter is 1; when { W0, W1} ═ 1, -1}, the value k corresponding to the first parameter is 0. Among { W0, W1} {1,1}, W0 is an all-1 sequence having the same length as NPSS, and W1 is an all-1 sequence having the same length as the new sequence. In { W0, W1} {1, -1}, W0 is an all-1 sequence having the same length as NPSS, and W1 is an all-1 sequence having the same length as the new sequence.

And the second synchronous signal is an auxiliary synchronous signal SSS.

alternatively, the first and second electrodes may be,

wherein, the

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

Is a second parameter, and

is a natural number not greater than 503.

Specifically, when the first synchronization signal carried on the first time-frequency resource is the secondary synchronization signal SSS, the process of determining the second parameter through the SSS carried on the first time-frequency resource may refer to the process of determining the second parameter through the SSS carried on the fourth time-frequency resource, which is not described herein again.

In a possible implementation of the first parameter, the first parameter may be determined by a relative position of a frequency domain resource where a sequence having the same generation manner or acquisition manner as that of the NSSS is located in a frequency domain resource where the SSS is located, that is, the first parameter is determined by a relative position of the second time-frequency resource in the first time-frequency resource.

Optionally, when the frequency domain resource in which the sequence having the same generation manner or acquisition manner as the NSSS is located at a relatively low frequency position in the frequency domain resource in which the SSS is located, that is, in step S101, when the second time-frequency resource is located at a relatively low frequency position in the first time-frequency resource, a value k corresponding to the first parameter is 0; when the frequency domain resource in which the sequence having the same generation manner or acquisition manner as the NSSS is located at a relatively high frequency position in the frequency domain resource in which the SSS is located, that is, in step S101, when the second time-frequency resource is located at a relatively high frequency position in the first time-frequency resource, a value k corresponding to the first parameter is 1.

Specifically, if the first time-frequency resource includes 2 RBs and the second time-frequency resource includes 1 RB, the implementation manner may be as shown in fig. 8-1 and 8-2. Wherein, the relative low frequency of the second time frequency resource in the first time frequency resource means: the second time-frequency resource is positioned in the low-frequency RB of the first time-frequency resource, and at the moment, the value of k is 0; the relative high frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is located in the high-frequency RB of the first time-frequency resource, and at this time, the value of k is 1.

In addition, if the first time-frequency resource includes N RBs and the second time-frequency resource includes 1 RB, the implementation manner shown in fig. 8-3 may be implemented, where the relatively low frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is positioned at the low frequency of the first time-frequency resource

In one RB or

In one RB or

meaning that the rounding is done down,

indicating rounding up.

Optionally, when the frequency domain resource in which the sequence having the same generation manner or acquisition manner as the NSSS is located at a relatively low frequency position in the frequency domain resource in which the SSS is located, that is, in step S101, when the second time-frequency resource is located at a relatively low frequency position in the first time-frequency resource, a value k corresponding to the first parameter is 1; when the frequency domain resource carrying the sequence in the same manner as the NSSS generation manner or the same manner as the NSSS acquisition manner is located at the relatively high frequency position in the frequency domain resource where the SSS is located, that is, in step S101, when the second time-frequency resource is located at the relatively high frequency position in the first time-frequency resource, the value k corresponding to the first parameter is 0.

Specifically, if the first time-frequency resource includes 2 RBs and the second time-frequency resource includes 1 RB, the implementation manner may be as shown in fig. 9-1 and fig. 9-2. Wherein, the relative low frequency of the second time frequency resource in the first time frequency resource means: the second time-frequency resource is positioned in the low-frequency RB of the first time-frequency resource, and at the moment, the value of k is 1; the relative high frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is located in the high-frequency RB of the first time-frequency resource, and at this time, the value of k is 0.

In addition, if the first time-frequency resource includes N RBs and the second time-frequency resource includes 1 RB, the method can be as shown in fig. 9In the implementation manner shown in-3, the relatively low frequency of the second time-frequency resource in the first time-frequency resource means: the second time-frequency resource is positioned at the low frequency of the first time-frequency resource

In one RB or

In one RB or

meaning that the rounding is done down,

indicating rounding up.

In another possible implementation of the first parameter, the SSS carried on the first time-frequency resource may be obtained by scrambling with a third scrambling code, where the third scrambling code may be an orthogonal code (OCC), a predetermined pseudo-random sequence that may also be configured in advance, or another scrambling code, which is not limited herein.

Specifically, taking the implementation that the third scrambling code is OCC as an example, in general, in order to avoid parsing errors of the NB-IOT terminal device caused by processing NPSS using OCC in the time domain, OCC may be introduced in the frequency domain. Different OCCs are configured for RBs with different frequency domains on the first time-frequency resource, and the first parameter is determined through the OCCs. As shown in fig. 10, when { W0, W1} ═ 1,1}, the value k corresponding to the first parameter is 0; when { W0, W1} ═ 1, -1}, the value k corresponding to the first parameter is 1. Or, when { W0, W1} ═ 1,1}, the value k corresponding to the first parameter is 1; when { W0, W1} ═ 1, -1}, the value k corresponding to the first parameter is 0. In { W0, W1} {1,1}, W0 is an all-1 sequence having the same length as NSSS, and W1 is an all-1 sequence having the same length as the new sequence. In { W0, W1} {1, -1}, W0 is an all-1 sequence having the same length as NSSS, and W1 is an all-1 sequence having the same length as the new sequence.

In this embodiment, in the first synchronization signal sent by the network device on the first time-frequency resource, the first synchronization signal carried on the first time-frequency resource is used in the first communication system, the first part of the first synchronization signal carried on the second time-frequency resource is used in the second communication system, and the second time-frequency resource is a part of the time-frequency resource of the first time-frequency resource. The first communication system and the second communication system are different communication systems, so that terminal devices corresponding to different communication systems can identify different synchronization signals through the first time-frequency resource. In addition, compared with the case that the network device sends different synchronization signals on different time-frequency resources for different communication systems, the first synchronization signal sent by the network device on the first time-frequency resource can enable terminal devices corresponding to different communication systems to access the network, so that the overhead of network resource and device energy consumption caused by the fact that the network device sends different synchronization signals on different time-frequency resources can be reduced, and the communication efficiency is improved.

Fig. 11 is another schematic diagram of a communication method in an embodiment of the present application, and as shown in fig. 11, the communication method includes the following steps.

S201, the network equipment determines first system information.

In this embodiment, a network device determines a first system message, where the first system message is carried in a first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource. Wherein the first system message is for a first communication system, a first portion of the first system message is for a second communication system, and the first communication system and the second communication system are different communication systems.

In a possible implementation manner, the first time-frequency resource carrying the first system message may further include a third time-frequency resource, where the second part of the first system message is carried in the third time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource.

Wherein the first portion of the first system message may be the same as the second portion of the first system message. Specifically, a first part of the first system message is carried on the second time frequency resource, a second part of the first system message is carried on the third time frequency resource, and the message of the first part of the first system message is the same as the message of the second part of the first system message, so that at least two same parts in the first system message carry the same message.

Fig. 12 is a radio frame diagram illustrating a first system message as a master information block MIB carried on a physical broadcast channel PBCH, wherein the first time/frequency resource is used for carrying the first system message, and the first system message at least includes a first part and a second part. In fig. 12, the NPBCH occupies a plurality of consecutive RBs in the frequency domain, and each RB can be regarded as a different part of the first system message, i.e., "shaded block NPBCH" is a first part of the first synchronization signal and "blank block NPBCH" is a second part of the first synchronization signal in fig. 12. In the scheme shown in fig. 12, the first time-frequency resource occupied by the PBCH includes a second time-frequency resource and a third time-frequency resource, where content or data carried on the second time-frequency resource is the same as the MIB carried by the NPBCH, and content or data carried on the third time-frequency resource is also the same as the MIB carried by the NPBH. Specifically, the PBCH occupies at least one subframe in the time domain, where the content or data carried by the first part of the first synchronization signal is the same as the content or data carried by the second part of the first synchronization signal, and the second part of the first synchronization signal can be directly copied (copy) from the second part of the first synchronization signal.

Further, the messages of the first portion of the first system message and the messages of the second portion of the first system message may be different. Specifically, a first part of the first system message is carried on the second time frequency resource, a second part of the first system message is carried on the third time frequency resource, and the message of the first part of the first system message is different from the message of the second part of the first system message, so that at least two parts of the first system message carry different messages. The possibility of more variation of the messages of the second part of the first system message than the way in which different parts carry the same message in the first system message can be made, not just limited to being identical to the messages of the first part of the first system message.

In a possible implementation manner, in step S201, since the first system message determined by the network device is carried in the first time-frequency resource, the first part of the first system message is carried in the second time-frequency resource, and the second time-frequency resource is a part of the time-frequency resources in the first time-frequency resource. Thus, the network bandwidth for the first communication system may be greater than the network bandwidth for the second communication system. Specifically, the first communication system may be an NR, narrowband NR, or other communication system, and the second communication system may be an NB-IOT, eMTC, or other communication system.

For example, the first communication system to which the first system message applies is a narrowband NR, and the second communication system to which the first part of the first system message applies is an NB-IOT. At this time, the first system message may be a master information block MIB carried on a physical broadcast channel PBCH. The second time-frequency resource comprises a sub-frame No. 0 in a wireless frame, and the generation mode or the acquisition mode of the content or the data borne on the second time-frequency resource is the same as the generation mode or the acquisition mode of the content or the data borne on the NPBCH. Specifically, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 0. The System Frame Number (SFN) is a Number of a radio Frame or a System Frame, and the Number of a specific System Frame is in a range of 0,1,2, …, and 1023, as shown in fig. 2-2. Each radio frame or system frame includes 10 subframes, and the number range of specific subframes is 0,1,2, …, 9. For the NR system, 1 slot (slot) includes 14 OFDM symbols, and in case of a subcarrier spacing of 15 kilohertz (kHz), the length of 1 slot is 1ms, and at this time, the subframe length is equal to the slot length equal to 1 ms. Therefore, in the case where the subcarrier spacing is 15kHz, the subframe and the slot in the present embodiment may be equivalently replaced. Taking a frame structure of a radio frame, which includes 10 subframes with numbers of 0 to 9 (as shown in fig. 2-1), the second time-frequency resource bearing the NPBCH may specifically include a subframe No. 0 or a timeslot; taking a frame structure of a radio frame, which includes 10 subframes with numbers of subframes from 1 to 10 as an example, the second time-frequency resource bearing the NPBCH may specifically include subframe number 1 or timeslot; in addition, the subframe number of the second time-frequency resource used for carrying the NPBCH may also be other values in a scenario where different radio frame structures are implemented, and is not limited herein.

In one possible implementation, the frequency domain resources in the first time frequency resources include frequency domain resources in at least one of the following frequency bands: n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n28, n41, n65, n66, n70, n71, n74, n 90. Controlling the first time-frequency resource to be applicable to all or part of the at least one frequency band can make the first part of the first signal carried on the first time-frequency resource compatible with the transmission of NPSS, NSSS, NPBCH of NB-IOT. Specifically, please refer to the contents in tables 3 and 4, and the definitions of the parameters in tables 3 and 4 may refer to the parameter definitions in the implementation process in step S101, which is not described herein again.

In addition, as shown in table 4, only the frequency bands supported by partial NR are taken as an example, where NB-IoT supports some partial frequency bands, i.e., the 3 rd column in table 4 takes the value of "Y" corresponding to the frequency band. In this embodiment, the system message may be received and sent according to the implementation manners of the embodiments shown in fig. 11 to 12 corresponding to the part of the frequency bands supported by the NB-IoT, that is, the system message may be received and sent according to the implementation manners of the embodiments shown in fig. 11 to 12 in the frequency band corresponding to the 4 th column with the value "Y" in table 4. The corresponding NB-IoT supported partial frequency bands may transmit and receive system messages according to different implementations from the embodiments shown in fig. 11 to 12, that is, the 4 th column in table 4 takes the value of "N" and transmits and receives system messages according to a new design scheme of system messages in the corresponding frequency bands. The corresponding NB-IoT unsupported frequency band, i.e., the frequency band corresponding to the 3 rd column with value "N" in table 4, may transmit and receive the system message according to a different implementation manner from the embodiments shown in fig. 11 to fig. 12, i.e., the system message is transmitted according to a new design scheme of the system message.

S202, the network equipment sends a first signal carrying a first system message to the terminal equipment on the first time-frequency resource.

In this embodiment, after determining the first system message in step S201, the network device sends a first signal carrying the first system message to the terminal device on the first time-frequency resource. Accordingly, in step S202, the terminal device receives a first signal carrying a first system message from the network device on the first time-frequency resource.

S203, the terminal equipment acquires the system message according to the first signal.

In this embodiment, the terminal device obtains the system message according to the first signal received in step S202.

After the network device may process the first system message according to a preset scrambling method and the like to obtain a first signal, the network device sends the first signal to the terminal device in step S202. Accordingly, after receiving the first signal in step S202, the terminal device obtains the first system message by using a configured or preconfigured descrambling method, and performs step S203 according to the first system message. Specifically, the configuration means that the base station or the server sends configuration information of some parameters or values of the parameters to the terminal through a message or a signaling, so that the terminal determines communication parameters or resources during transmission according to the values or the information. The pre-configuration is similar to the configuration, and can be a mode that a base station or a server sends parameter information or values to a terminal through another link or carrier different from a sidelink; or corresponding parameters or parameter values may be defined, or related parameters or values may be written in the terminal device in advance. This is not limited in this application.

In addition, the terminal device of the narrowband NR may obtain the system message in the narrowband NR communication system according to the first system message, and the terminal device of the NB-IOT may obtain the system message in the NB-IOT communication system according to the first part of the first system message.

Specifically, the process of acquiring, by the narrowband NR terminal device, the system message in the narrowband NR communication system according to the first system message may include that a time-frequency resource location of a first signal carrying the first system message is pre-configured in the terminal device, and the narrowband NR terminal device may receive the first signal at the pre-configured time-frequency resource location, perform operations such as descrambling, demodulation, and decoding on the first signal, and finally obtain the first system message.

Correspondingly, the process of the NB-IoT terminal device acquiring the system message in the NB-IoT system according to the first part of the first system message may include that the time-frequency resource location of the partial first signal carrying the first part of the first system message is pre-configured at the terminal device, and the NB-IoT terminal device may receive the partial first signal at the pre-configured time-frequency resource location, perform operations such as descrambling, demodulating, decoding, and the like on the partial first signal, and finally acquire the first part of the first system message.

Specifically, the first part of the first system message is a system message scrambled by a target scrambling code, the initialization seed of the target scrambling code is related to a first parameter, and the first parameter is related to a physical cell identifier of a cell where the terminal device is located. Wherein, when the first system message is a master information block MIB carried on a physical broadcast channel PBCH, the first parameter comprises:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

mod represents a remainder operation for the physical cell identity of the cell in which the terminal device is located,

indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, c_initFor the initialization seed of the target scrambling code,

and

for the first parameter, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, c_initFor the initialization seed of the target scrambling code,

and the same

Is the first parameter, n_fFor a radio frame number, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

Illustratively, the first communication system to which the first system message applies is a narrowband NR, and the second communication system to which the first part of the first system message applies is an NB-IOT. At this time, the first system message is PBCH, and the content or data carried in the first part of the first system message is the same as MIB carried in NPBCH, that is, PBCH and NPBCH are sent on the same time-frequency resource (first time-frequency resource). In step S203, the terminal device determines scrambling code seeds of bit-level and symbol-level scrambling codes according to the process of acquiring the system message from the first signal.

Specifically, NPBCH may use NB-IoT cell IDs

And initializing scrambling code seeds of the bit-level scrambling code and the symbol-level scrambling code, wherein if the PBCH can be obtained by correctly analyzing the first system message on the first time-frequency resource by the terminal equipment with the narrow-band NR, the initialization seeds of the scrambling codes of the PBCH need to be the same as the initialization seeds of the scrambling codes of the NPBCH.

For example, when the narrowband NR communication system and the NB-IoT communication system share one network device, that is, when a terminal device of the narrowband NR communication system and a terminal device of the NB-IoT communication system communicate through the same network device, the network device may transmit the first system message on the first time-frequency resource by using the scheme of the present embodiment. The first part of the first system message is carried in a second time frequency resource, and the second time frequency resource is a part of the first time frequency resource. Wherein the first system message is for a narrowband NR communication system and a first portion of the first system message is for an NB-IoT communication system. At this time, the terminal device of the narrowband NR obtains PBCH through the first system message, and the terminal device of NB-IoT obtains NPBCH through the first part of the first system message. Since NPBCH is a partial message in PBCH, in order for a narrowband NR terminal device to correctly decode PBCH, and in order for an NB-IoT terminal device to correctly decode NPBCH, the initialization seed of the PBCH's scrambling code needs to be the same as the initialization seed of the NPBCH's scrambling code. Therefore, when the narrowband NR communication system and the NB-IoT communication system share one network device, the cell ID corresponding to the narrowband NR communication system and the cell ID corresponding to the NB-IoT communication system satisfy the method (5). Wherein the mode (5) includes:

alternatively, the first and second electrodes may be,

in the mode (5), the first and second substrates are,

is the cell ID of the NB-IoT,

cell ID, for narrowband NR, mod denotes the remainder operation,

indicating a rounding down,/indicating a division operation.

The mode (5) can ensure that the scrambling code of PBCH is the same as that of NPBCH. At this time, for terminal devices of NB-IoT, the initialization seed of the scrambling code of NPBCH is used

Use in the initialization seed of the scrambling code of PBCH for narrowband NR terminal devices

Or

The method comprises the following specific steps:

for the terminal equipment of NB-IoT, the initialization seed used by the bit-level scrambling code is as follows:

the initialization seeds used for symbol level scrambling are:

for the terminal equipment with narrow-band NR, the initialization seed used by the bit-level scrambling code is as follows:

alternatively, the first and second electrodes may be,

the initialization seeds used for symbol level scrambling are:

alternatively, the first and second electrodes may be,

in each of the above-mentioned formulas,

is the cell ID of the NB-IoT,

cell ID, for narrowband NR, mod denotes the remainder operation,

denotes a rounding down,/denotes a division operation, n_fIs the radio frame number.

In this embodiment, in the first system message sent by the network device on the first time-frequency resource, the first system message carried on the first time-frequency resource is used in the first communication system, the first part of the first system message carried on the second time-frequency resource is used in the second communication system, and the second time-frequency resource is a part of the time-frequency resource of the first time-frequency resource. The first communication system and the second communication system are different communication systems, so that terminal devices corresponding to different communication systems can identify different system messages through the first time-frequency resource. In addition, compared with the case that the network device respectively sends different system messages on different time-frequency resources for different communication systems, the first system message sent by the network device on the first time-frequency resource can enable terminal devices corresponding to different communication systems to access a network, so that the overhead of network resource and device energy consumption caused by the fact that the network device sends different system messages on different time-frequency resources can be reduced, and the communication efficiency is improved.

The embodiments of the present application have been described above from the perspective of a method, and the communication apparatus in the embodiments of the present application will be described below from the perspective of specific apparatus implementation.

Referring to fig. 13, a schematic diagram of a communication device 1300 is provided in an embodiment of the present application, wherein the communication device 1300 at least includes a processing unit 1301 and a transceiver unit 1302.

In one possible implementation, the communications apparatus 1300 includes:

the processing unit 1301 is configured to determine a first synchronization signal, where the first synchronization signal is carried in a first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the transceiving unit 1302 is configured to transmit the first synchronization signal on the first time/frequency resource.

In a possible implementation manner, the second part of the first synchronization signal is carried in a third time-frequency resource, where the third time-frequency resource is a part of the first time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource, and a sequence of the first part of the first synchronization signal is the same as a sequence of the second part of the first synchronization signal.

In one possible implementation, the first synchronization signal is a primary synchronization signal PSS, and the first portion of the first synchronization signal is obtained from the first sequence and the first scrambling code.

In one possible implementation, wherein the first sequence is a ZC sequence, the first scrambling code is {1,1, 1,1, -1, 1 }.

In a possible implementation manner, the second time-frequency resource includes subframe number 5 in a radio frame.

In one possible implementation, the second time-frequency resource includes the last 11 OFDM symbols of the 14 orthogonal frequency division multiplexing OFDM symbols in the subframe No. 5.

In one possible implementation, the first synchronization signal is a secondary synchronization signal SSS, a first portion of the first synchronization signal is obtained from the second sequence and the second scrambling code,

in one possible implementation, the second sequence is a ZC sequence, and the second scrambling code is a binary scrambling code with a length of 128.

In one possible implementation, the second time-frequency resource includes subframe number 9 in an even radio frame.

In a possible implementation manner, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the subframe 9.

In a possible implementation manner, the physical cell identity of the cell in which the terminal device is located is related to a first parameter, where the first parameter is related to a relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code.

In a possible implementation, the first synchronization signal is an SSS, and the physical cell identity of the cell in which the terminal device is located is related to a first parameter and a second parameter, and the second parameter is related to the first sequence and the first scrambling code.

In a possible implementation manner, the first synchronization signal is a PSS, the physical cell identity of the cell in which the terminal device is located is related to the first parameter and the second parameter, and the transceiving unit 1302 is further configured to:

In a possible implementation manner, the associating, with the first parameter, a physical cell identifier of a cell in which the terminal device is located includes:

alternatively, the first and second electrodes may be,

wherein, the

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

Is a natural number not greater than 503.

Optionally, the

May be the second parameter.

it should be noted that, for details of the information execution process of the units of the communication apparatus 1300, reference may be specifically made to the description of the foregoing method embodiments in the present application, and details are not described here again.

In another possible implementation, the communications apparatus 1300 includes:

the transceiver 1302 is configured to receive a first synchronization signal from a network device on a first time-frequency resource, where the first synchronization signal is carried in the first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of the time-frequency resource in the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the processing unit 1301 is configured to obtain time-frequency synchronization according to the first synchronization signal.

In one possible implementation, the first sequence is a ZC sequence, and the first scrambling code is {1,1, 1,1, -1, -1, 1,1, 1, -1, 1 }.

In one possible implementation, the first synchronization signal is a secondary synchronization signal SSS, and the first portion of the first synchronization signal is obtained by the second sequence and the second scrambling code.

receiving the SSS from the network device on a fourth time-frequency resource, the fourth time-frequency resource being different from the first time-frequency resource, the second parameter relating to the SSS.

alternatively, the first and second electrodes may be,

wherein, the

Is the first parameter, and the

A value of 0 or 1, which represents a multiplication, which

Is a natural number not greater than 503.

Optionally, the

May be the second parameter.

In another possible implementation, the communications apparatus 1300 includes:

the processing unit 1301 is configured to determine a first system message, where the first system message is carried in a first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, where the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the transceiving unit 1302 is configured to transmit the first system message on the first time/frequency resource.

alternatively, the first and second electrodes may be,

wherein, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

For the first parameter, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

Indicating a rounding down, the/indicates a divide operation.

In another possible implementation, the communications apparatus 1300 includes:

the transceiver 1302 is configured to receive a first signal containing a first system message from a network device on a first time-frequency resource, where the first system message is carried in the first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource, where the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems;

the processing unit 1301 is configured to obtain a system message according to the first signal.

alternatively, the first and second electrodes may be,

wherein, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

For the first parameter, the mod represents a remainder operation, the

Indicating a rounding down, the/indicates a divide operation.

alternatively, the first and second electrodes may be,

wherein, the c_initAn initialization seed for the target scrambling code, the

And the same

To representRounded down, the/represents a division operation.

Please refer to fig. 14, which is a schematic structural diagram of a communication device according to the foregoing embodiment provided in an embodiment of the present application, wherein the communication device may specifically be a network device according to the foregoing embodiment, and the structure of the communication device may refer to the structure shown in fig. 14.

The communication device includes at least one processor 1411, at least one memory 1412, at least one transceiver 1413, at least one network interface 1414, and one or more antennas 1415. The processor 1411, the memory 1412, the transceiver 1413 and the network interface 1414 are connected, for example, by a bus, and in this embodiment, the connection may include various interfaces, transmission lines or buses, which is not limited in this embodiment. An antenna 1415 is connected to the transceiver 1413. The network interface 1414 is used to connect the communication apparatus to other communication devices via a communication link, for example, the network interface 1414 may include a network interface between the communication apparatus and a core network device, such as an S1 interface, and the network interface may include a network interface between the communication apparatus and other network devices (such as other access network devices or core network devices), such as an X2 or Xn interface.

The processor 1411 is mainly used for processing communication protocols and communication data, controlling the whole communication device, executing software programs, and processing data of the software programs, for example, for supporting the communication device to perform the actions described in the embodiments. The communication device may include a baseband processor for processing communication protocols and communication data, and a central processor for controlling the entire network device, executing software programs, and processing data of the software programs. The processor 1411 in fig. 14 may integrate the functions of a baseband processor and a central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may be independent processors, and are interconnected by a bus or the like. Those skilled in the art will appreciate that a network device may include multiple baseband processors to accommodate different network formats, multiple central processors to enhance its processing capabilities, and various components of the network device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the memory in the form of a software program, and the processor executes the software program to realize the baseband processing function.

The memory is used primarily for storing software programs and data. The memory 1412 may be separate and coupled to the processor 1411. Optionally, the memory 1412 may be integrated with the processor 1411, for example, within a chip. The memory 1412 can store program codes for executing the technical solutions of the embodiments of the present application, and is controlled by the processor 1411 to execute, and various executed computer program codes can also be regarded as drivers of the processor 1411.

Fig. 14 shows only one memory and one processor. In an actual network device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be a memory element on the same chip as the processor, that is, an on-chip memory element, or a separate memory element, which is not limited in this embodiment.

A transceiver 1413 may be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and the transceiver 1413 may be coupled to an antenna 1415. The transceiver 1413 includes a transmitter Tx and a receiver Rx. In particular, one or more antennas 1415 may receive radio frequency signals, and a receiver Rx of the transceiver 1413 is configured to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 1411, so that the processor 1411 performs further processing on the digital baseband signals or digital intermediate frequency signals, such as demodulation processing and decoding processing. In addition, the transmitter Tx in the transceiver 1413 is also used to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 1411, convert the modulated digital baseband signal or the digital intermediate frequency signal into a radio frequency signal, and transmit the radio frequency signal through the one or more antennas 1415. Specifically, the receiver Rx may selectively perform one or more stages of down-mixing and analog-to-digital conversion processes on the rf signal to obtain a digital baseband signal or a digital intermediate frequency signal, wherein the order of the down-mixing and analog-to-digital conversion processes is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing and digital-to-analog conversion processes on the modulated digital baseband signal or the modulated digital intermediate frequency signal to obtain the rf signal, where the order of the up-mixing and the digital-to-analog conversion processes is adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

A transceiver may also be referred to as a transceiver unit, transceiver, transceiving means, etc. Optionally, a device for implementing a receiving function in the transceiver unit may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit may be regarded as a sending unit, that is, the transceiver unit includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

It should be noted that the communication apparatus shown in fig. 14 may be specifically configured to implement the steps implemented by the network device in the method embodiments corresponding to fig. 5 to fig. 12, and implement the technical effect corresponding to the network device, and the specific implementation manner of the communication apparatus shown in fig. 14 may refer to the descriptions in each of the method embodiments corresponding to fig. 5 to fig. 12, and is not described herein again.

Referring to fig. 15, a schematic diagram of a possible logical structure of a communication device 1500 according to the foregoing embodiments is provided for an embodiment of the present application, where the communication device may specifically be a terminal device in the foregoing embodiments, and the communication device 1500 may include, but is not limited to, a processor 1501, a communication port 1502, a memory 1503, and a bus 1504, and in the embodiment of the present application, the processor 1501 is configured to control an operation of the communication device 1500.

Further, the processor 1501 may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

It should be noted that the communication apparatus shown in fig. 15 may be specifically configured to implement the steps implemented by the terminal device in the method embodiments corresponding to fig. 5 to fig. 12, and implement the technical effect corresponding to the terminal device, and the specific implementation manner of the communication apparatus shown in fig. 15 may refer to the descriptions in each of the method embodiments corresponding to fig. 5 to fig. 12, which is not described herein again.

The present application further provides a computer-readable storage medium storing one or more computer-executable instructions, which, when executed by a processor, perform the method as described in the possible implementation manner of the communication apparatus in the foregoing embodiments, where the communication apparatus may specifically be a network device in the foregoing embodiments.

The present application further provides a computer-readable storage medium storing one or more computer-executable instructions, which, when executed by a processor, perform the method as described in the possible implementation manner of the communication apparatus in the foregoing embodiments, where the communication apparatus may specifically be the terminal device in the foregoing embodiments.

The embodiments of the present application also provide a computer program product (or computer program) storing one or more computers, and when the computer program product is executed by the processor, the processor executes the method that may be implemented by the communication apparatus, where the communication apparatus may specifically be the network device in the foregoing embodiments.

The present application further provides a computer program product storing one or more computers, and when the computer program product is executed by the processor, the processor executes the method that may be implemented by the communication apparatus, where the communication apparatus may specifically be the terminal device in the foregoing embodiments.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support a communication device to implement functions related to possible implementation manners of the communication device. In one possible design, the system-on-chip may further include a memory, which stores program instructions and data necessary for the communication device. The chip system may be formed by a chip, or may include a chip and other discrete devices, where the communication device may specifically be the network device in the foregoing embodiment.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, and is configured to support a communication device to implement functions related to possible implementation manners of the communication device. In one possible design, the system-on-chip may further include a memory, which stores program instructions and data necessary for the communication device. The chip system may be formed by a chip, or may include a chip and other discrete devices, where the communication device may specifically be the terminal device in the foregoing embodiment.

An embodiment of the present application further provides a network system architecture, where the network system architecture includes the communication device described above, and the communication device may specifically be the terminal device and the network device in any one of the foregoing embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims

1. A method of communication, comprising:

determining a first synchronization signal, wherein the first synchronization signal is carried in a first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, wherein the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems;

transmitting the first synchronization signal on the first time-frequency resource.

2. A method of communication, comprising:

receiving a first synchronization signal from a network device on a first time-frequency resource, where the first synchronization signal is carried in the first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems;

and acquiring time-frequency synchronization according to the first synchronization signal.

3. A communication apparatus, comprising a processing unit and a transceiving unit;

4. A communication apparatus, comprising a processing unit and a transceiving unit;

the transceiver unit is configured to receive a first synchronization signal from a network device on a first time-frequency resource, where the first synchronization signal is carried in the first time-frequency resource, a first part of the first synchronization signal is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, where the first synchronization signal is used in a first communication system, the first part of the first synchronization signal is used in a second communication system, and the first communication system and the second communication system are different communication systems;

and the processing unit is used for acquiring time-frequency synchronization according to the first synchronization signal.

5. The method or apparatus of any one of claims 1 to 4, wherein the second portion of the first synchronization signal is carried in a third time-frequency resource, and the third time-frequency resource is a portion of the first time-frequency resource, and the third time-frequency resource is different from the second time-frequency resource, and wherein a sequence of the first portion of the first synchronization signal is the same as a sequence of the second portion of the first synchronization signal.

6. The method or apparatus of any of claims 1 to 5, wherein the first synchronization signal is a Primary Synchronization Signal (PSS), and wherein a first portion of the first synchronization signal is obtained from a first sequence and a first scrambling code.

7. The method or apparatus of claim 6, wherein the first sequence is a ZC sequence, and the first scrambling code is {1,1, 1,1, -1, -1, 1,1, -1, 1 }.

8. The method according to claim 6 or 7, wherein the second time-frequency resource comprises subframe number 5 in a radio frame.

9. The method or apparatus of claim 8, wherein the second time-frequency resource comprises the last 11 OFDM symbols of the 14 OFDM symbols in the subframe No. 5.

10. The method or apparatus of any of claims 1 to 5, wherein the first synchronization signal is a Secondary Synchronization Signal (SSS), and wherein a first portion of the first synchronization signal is obtained from a second sequence and a second scrambling code.

11. The method or apparatus of claim 10, wherein the second sequence is a ZC sequence, and wherein the second scrambling code is a binary scrambling code with a length of 128.

12. The method or apparatus of claim 10 or 11, wherein the second time-frequency resource comprises subframe number 9 in an even radio frame.

13. The method or apparatus of claim 12, wherein the second time-frequency resource comprises the last 11 OFDM symbols of the 14 OFDM symbols in the subframe number 9.

14. The method or apparatus according to any one of claims 1 to 13, wherein a physical cell identity of a cell in which a terminal device is located is related to a first parameter, the first parameter is related to a relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code.

15. The method or apparatus according to claim 14, wherein the physical cell identity of the cell in which the terminal device is located is related to the first parameter, and includes:

alternatively, the first and second electrodes may be,

wherein, the

A physical cell identity for the cell in which the terminal device is located, said

Is the first parameter, and

a value of 0 or 1, said x representing a multiplication operation, said

Is a natural number not greater than 503.

16. The method or apparatus of any of claims 1 to 15, wherein the frequency domain resources in the first time-frequency resources comprise frequency domain resources in at least one of:

17. a method of communication, comprising:

determining a first system message, wherein the first system message is carried in a first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, wherein the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems;

transmitting the first system message on the first time-frequency resource.

18. A method of communication, comprising:

receiving a first signal containing a first system message from a network device on a first time-frequency resource, where the first system message is carried in the first time-frequency resource, a first part of the first system message is carried in a second time-frequency resource, and the second time-frequency resource is a part of time-frequency resources in the first time-frequency resource, where the first system message is used in a first communication system, the first part of the first system message is used in a second communication system, and the first communication system and the second communication system are different communication systems;

and acquiring a system message according to the first signal.

19. A communication apparatus, comprising a processing unit and a transceiving unit;

the transceiver unit is configured to transmit the first system message on the first time/frequency resource.

20. A communication apparatus, comprising a processing unit and a transceiving unit;

and the processing unit is used for acquiring a system message according to the first signal.

21. The method or apparatus of any one of claims 17 to 20, wherein the second portion of the first system message is carried in a third time frequency resource, the third time frequency resource is a portion of the first time frequency resource, the third time frequency resource is different from the second time frequency resource, and the first portion of the first system message is the same as the second portion of the first system message.

22. The method or apparatus of any of claims 17 to 21, wherein the first part of the first system message is a system message scrambled by a target scrambling code, and wherein an initialization seed of the target scrambling code is related to a first parameter related to a physical cell identity of a cell in which the terminal device is located.

23. The method or apparatus of claim 22, wherein the first system message is a master information block, MIB, carried on a physical broadcast channel, PBCH, and wherein the first parameter comprises:

alternatively, the first and second electrodes may be,

wherein, the

The mod represents a remainder operation for a physical cell identity of a cell in which the terminal device is located, the mod represents a remainder operation, and the

Indicating a rounding down, the/indicates a divide operation.

24. The method or apparatus of claim 23, wherein the first parameter related to a physical cell identity of a cell in which the terminal device is located comprises:

alternatively, the first and second electrodes may be,

wherein, c is_initAn initialization seed for the target scrambling code, the

And the above-mentioned

Is the first parameter.

25. The method or apparatus of claim 23 or 24, wherein the first parameter related to a physical cell identity of a cell in which the terminal device is located comprises:

alternatively, the first and second electrodes may be,

wherein, c is_initAn initialization seed for the target scrambling code, the

And the above-mentioned

Is the first parameter, the n_fIs the radio frame number.

26. The method or apparatus of any of claims 17-25, wherein the second time-frequency resource comprises subframe 0 in a radio frame.

27. The method or apparatus of claim 26, wherein the second time-frequency resource comprises the last 11 OFDM symbols of 14 OFDM symbols in the subframe 0.

28. The method or apparatus of any of claims 17 to 27, wherein the frequency domain resources in the first time frequency resources comprise frequency domain resources in at least one of:

29. a communication device comprising at least one processor and interface circuitry, wherein

The interface circuitry to provide programming or instructions to the at least one processor;

the at least one processor is configured to execute the program or instructions to cause the communication apparatus to implement the method of any one of claims 1 to 2 or to cause the communication apparatus to implement the method of any one of claims 5 to 16.

30. A computer readable storage medium having stored thereon instructions which, when executed by a computer, implement the method of any of claims 1 to 2 or which, when executed by a computer, implement the method of any of claims 5 to 16.