WO2022037451A1

WO2022037451A1 - Communication method and apparatus

Info

Publication number: WO2022037451A1
Application number: PCT/CN2021/111954
Authority: WO
Inventors: 苏俞婉; 罗之虎; 金哲
Original assignee: 华为技术有限公司
Priority date: 2020-08-21
Filing date: 2021-08-11
Publication date: 2022-02-24
Also published as: CN114080018A

Abstract

Provided are a communication method and apparatus, which are used for, by means of synchronization signals sent on the same time-frequency resource, enabling terminal devices corresponding to different communication systems to access a network, such that a network device does not need to send different synchronization signals on different time-frequency resources for the different communication systems, and as such, the overheads of network resources and device energy consumption of the network device can be reduced. The method comprises: determining a first synchronization signal, the first synchronization signal being carried on a first time-frequency resource, a first part of the first synchronization signal being carried on a second time-frequency resource, and the second time-frequency resource being a part of the first time-frequency resource, wherein the first synchronization signal is used for a first communication system, the first part of the first synchronization signal is used for a second communication system, and the first communication system and the second communication system are different communication systems; and then, sending the first synchronization signal on the first time-frequency resource.

Description

A communication method and device

This application claims the priority of the Chinese patent application filed on August 21, 2020 with the application number 202010851441.8 and the title of the invention is "a communication method and device", the entire contents of which are incorporated into this application by reference middle.

technical field

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

Background technique

Low power wide area (LPWA) refers to an IoT scenario with low power consumption and wide coverage. LPWA is suitable for IoT applications with long-distance transmission, small amount of communication data, and long-term operation on battery power. Narrow band internet of things (NB-IoT) and enhanced machine type communication (eMTC) are typical IoT technologies for LPWA.

At present, 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 can use the initial access signal to complete time and frequency synchronization with the cell to access the network device. In the LPWA scenario, there are many different communication systems, and network devices need to send different initial access signals in different time-frequency resources for different communication systems, so that terminal devices corresponding to different communication systems can access network devices .

However, the network device needs to carry different initial access signals on different time-frequency resources and send them separately, that is, the network device needs to send different initial access signals multiple times during the process of the terminal device accessing the network device. The process easily leads to a large overhead of network resources and device energy consumption of network devices, which affects communication efficiency.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a communication method and apparatus, which are used to enable terminal devices corresponding to different communication systems to obtain time-frequency synchronization through synchronization signals carried on the same time-frequency resource, so as to realize network communication. In addition, the synchronization signal sent by the network device on the same time-frequency resource can enable 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 for different communication systems, and can Reduce the overhead of network resources and device energy consumption of network devices, and improve communication efficiency.

A first aspect of the embodiments of the present application provides a communication method, and the method is applied to a communication device, where the communication device may be a network device, or may be executed by a component of a network device (for example, a processor, a chip, or a chip system, etc.). In this method, the network device determines a first synchronization signal, the first synchronization signal is carried on a first time-frequency resource, a first part of the first synchronization signal is carried on a second time-frequency resource, and the second time-frequency resource is the first time-frequency resource. A part of time-frequency resources in a time-frequency resource, wherein the first synchronization signal is used for the first communication system, the first part of the first synchronization signal is used for the second communication system, the first communication system communicates with the second communication system The systems are different communication systems; then, the network device sends the first synchronization signal on the first time-frequency resource.

In this embodiment, among the first synchronization signals 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, and the first synchronization signal is carried on the second time-frequency resource. The first part of the first synchronization signal 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 network device sending 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 connect to each other. It can reduce the overhead of network resources and device energy consumption caused by network devices sending different synchronization signals on different time-frequency resources, and improve communication efficiency.

In a possible implementation manner of the first aspect of the embodiment of the present application, the second part of the first synchronization signal is carried in a third time-frequency resource, and the third time-frequency resource is a part of the first time-frequency resource A time-frequency resource, 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 is the same as the 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 time-frequency resource in 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 synchronization signal is carried on the second time-frequency resource, the second part of the first synchronization signal is carried on the third time-frequency resource, and the sequence of the first part of the first synchronization signal is the same as that of the first synchronization signal The sequence of the second part is the same, so that there are at least two parts in the first synchronization signal carrying the same sequence. Therefore, a specific implementation manner of carrying the sequence in each part in the first synchronization signal is provided, and the implementability of the solution is improved.

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

In this embodiment, the first synchronization signal may be the primary synchronization signal PSS, that is, the 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, that is, the first sequence and the first scrambling code. A first portion of the first synchronization signal obtained by a scrambling code is used for the second communication system. Wherein, the first part of the first synchronization signal can be obtained by the first sequence and the first scrambling code, which provides a specific implementation of the first part of the first synchronization signal, so that the solution can be used in the communication in which the first synchronization signal is PSS It can be applied in scenarios to improve the achievability of the solution.

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, 1}.

In this embodiment, the first part of the first synchronization signal is obtained by a first sequence and a first scrambling code, where the first sequence may be a ZC sequence, and the first scrambling code may be {1, 1, 1, 1, -1, -1, 1, 1, 1, -1, 1}. Therefore, a specific implementation manner of the first sequence and the first scrambling code is provided, and the implementability of the solution is improved.

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

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

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 No. 5 subframe.

In this embodiment, the second time-frequency resource may specifically include the last 11 OFDM symbols of the 14 OFDM symbols in the No. 5 subframe, which provides a more specific information about the second time-frequency resource. The realization method further improves the achievability 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 part of the first synchronization signal is obtained by the second sequence and the second scrambling code.

Optionally, 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 the primary synchronization signal SSS, that is, the SSS is 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, that is, the second sequence and the first The first part of the first synchronization signal obtained by 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, which provides a specific implementation of the first part of the first synchronization signal, so that the solution can be used in a communication scenario where the first synchronization signal is SSS It can be applied under the following conditions to improve the feasibility of the scheme.

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 manner of the second sequence and the second scrambling code is provided, which improves the implementability of the solution.

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

In this embodiment, the second time-frequency resource may specifically include subframe No. 9 in the even-numbered radio frame, and a specific implementation manner of the second time-frequency resource is provided to improve the implementability of the solution.

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 among the 14 OFDM symbols in the No. 9 subframe.

In this embodiment, the second time-frequency resource may specifically include the last 11 OFDM symbols among the 14 OFDM symbols in the No. 9 subframe, thereby providing a more specific implementation manner of the second time-frequency resource, and further Improve the feasibility of the program.

In a possible implementation manner of the first aspect of the embodiment of the present application, the physical cell identifier of the cell where the terminal device is located is related to a first parameter, and the first parameter is related to the second time-frequency resource in the first time-frequency resource is related to the relative position in , or, the first parameter is related to the 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 where the terminal device is located is related to the first parameter, and the first parameter may specifically select different values according to different implementations of the first synchronization signal. The first parameter may be related to the relative position of the second time-frequency resource in the first time-frequency resource, for example, different first parameters may be determined according to different relative positions; or, the first parameter may be In relation to the third scrambling code, the first synchronization signal is a signal scrambled by the third scrambling code, for example, different first parameters are determined according to the difference of the third scrambling code. That is, through different implementations of the first synchronization signal, multiple values of the first parameter can be determined. Therefore, various implementation manners for determining the first parameter are provided, so as to realize the flexible configuration of the physical cell identifier of the cell where the terminal device is located, and at the same time, the practicability of the solution is improved.

In a possible implementation manner of the first aspect of the embodiment of the present application, the first synchronization signal is SSS, the physical cell identifier of the cell where the terminal device is located is related to the first parameter and the second parameter, and the second parameter is related to the The first sequence is associated with 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 the first parameter and the second parameter, wherein the second parameter is related to the first sequence and the first scrambling code . Therefore, a more specific implementation manner of determining the physical cell identifier of the cell where the terminal device is located in the scenario where the first synchronization signal is the SSS is provided, which further improves the practicability of the solution.

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

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

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

or,

Among them, the

is the physical cell identifier of the cell where the terminal equipment is located, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

The value of is a natural number not greater than 503.

Optionally, the

Can be the second parameter.

In this embodiment, when the physical cell identifier of the cell where the terminal device is located is related to the first parameter, the physical cell identifier of the cell where the terminal device is located may be specifically determined through the above two methods. Therefore, a more specific implementation manner of determining the physical cell identifier of the cell where the terminal equipment is located in the scenario where the physical cell identifier of the cell where the terminal equipment is located is related to the first parameter is provided, and the implementability of the solution 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 resource 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 resources in the first time-frequency resource include time-frequency resources 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 can pass the at least one frequency band. The first time-frequency resource in obtains time-frequency synchronization. A variety of specific implementation manners of the first time-frequency resource are provided, which improves the achievability of the solution.

A second aspect of an embodiment of the present application provides a communication method, and the method is applied to a communication device. The communication device may be a terminal device, or may be executed by a component of the terminal device (for example, a processor, a chip, or a chip system, etc.). In this method, a terminal device receives a first synchronization signal sent from a network device on a first time-frequency resource, the first synchronization signal is carried on the first time-frequency resource, and a first part of the first synchronization signal is carried on a second time-frequency resources, the second time-frequency resources are part of the first time-frequency resources, wherein the first synchronization signal is used for the first communication system, and the first part of the first synchronization signal is used for the second time-frequency resource In the communication system, the first communication system and the second communication system are different communication systems; after that, the terminal device obtains time-frequency synchronization according to the first synchronization signal.

In this embodiment, when the terminal device receives the first synchronization signal sent from 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, and the first synchronization signal carried on the first time-frequency resource is used in the second communication system. The first part of the first synchronization signal carried on the 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. Wherein, in the process that the terminal device acquires time-frequency synchronization according to the first synchronization signal, since the first communication system and the second communication system are different communication systems, the terminal devices corresponding to different communication systems can pass the first communication system. Time-frequency resources identify different synchronization signals, and time-frequency synchronization can be obtained. In addition, compared with the network device respectively sending 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 terminals corresponding to different communication systems When the device is connected to the network, the network resource and device energy consumption overhead caused by the network device sending different synchronization signals on different time-frequency resources can be reduced, and the communication efficiency can be 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, and the third time-frequency resource is a part of the first time-frequency resource A time-frequency resource, 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 is the same as the 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 the main synchronization signal PSS, and the first part of the first synchronization signal is obtained by the first sequence and the first scrambling code.

In this embodiment, the first synchronization signal may be the primary synchronization signal PSS, that is, the 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, that is, the first sequence and the first scrambling code. A first portion of the first synchronization signal obtained by a scrambling code is used for the second communication system. Wherein, the first part of the first synchronization signal can be obtained by the first sequence and the first scrambling code, so that the solution can be applied in a communication scenario where the first synchronization signal is PSS, and the implementability of the solution 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 the No. 5 subframe in the 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 No. 5 subframe.

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 part 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 the 9th subframe in the even-numbered 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 No. 9 subframe.

In a possible implementation manner of the second aspect of the embodiment of the present application, the physical cell identifier of the cell where the terminal device is located is related to a first parameter, and the first parameter and the second time-frequency resource are in the first time-frequency resource is related to the relative position of , 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 SSS, the physical cell identifier of the cell where the terminal device is located is related to the first parameter and the second parameter, and the second parameter is related to the The first sequence is associated with 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 PSS, the physical cell identifier of the cell where the terminal device is located is related to the first parameter and the second parameter, and the method further includes: the The terminal device receives the SSS from the network device on a fourth time-frequency resource, where the fourth time-frequency resource is different from the first time-frequency resource, and the second parameter is related to the SSS.

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

or,

Among them, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

The value of is a natural number not greater than 503.

Optionally, the

Can 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 resource include frequency domain resources in at least one of the following frequency bands:

In this embodiment, the frequency domain resources in the first time-frequency resource include the above-mentioned at least one frequency band, that is, the first communication system and the second communication system can be applied to the above-mentioned at least one frequency band. A variety of specific implementation manners of the first time-frequency resource are provided, which improves the achievability of the solution.

A third aspect of the embodiments of the present application provides a communication method, and the method is applied to a communication device. The communication device may be a network device, or may be executed by a component of a network device (for example, a processor, a chip, or a chip system, etc.). In this method, the network device determines a first system message, the first system message is carried on a first time-frequency resource, a first part of the first system message is carried on a second time-frequency resource, and the second time-frequency resource is the first time-frequency resource. A part of time-frequency resources in a time-frequency resource, wherein the first system message is used for the first communication system, the first part of the first system message is used for the second communication system, the first communication system communicates with the second communication system The systems are different communication systems; after that, the network device sends the first system message on the first time-frequency resource.

In this embodiment, among the first system messages sent by the network device on the first time-frequency resource, the first system message carried on the first time-frequency resource is used for the first communication system, and the first system message carried on the second time-frequency resource is used for the first communication system. The first part of the first system message 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 system messages through the first time-frequency resource. In addition, compared with the network device sending 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 terminals corresponding to different communication systems The device obtains system messages and then accesses the network, which can reduce the overhead of network resources and device energy consumption caused by the network device sending different system messages on different time-frequency resources, and improve communication efficiency.

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, and the third time-frequency resource is a part of the first time-frequency resource Time-frequency resources, the third time-frequency resources are different from the second time-frequency resources, 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 time-frequency resource in 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 data carried in the first part of the first system message is the same as the first part of the first system message. The content or data carried by the second part of a system message is the same, so that there are at least two identical parts in the first system message that carry the same message. Therefore, a specific implementation manner of carrying content in each part in the first system message is provided, and the implementability of the solution 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, and the initialization seed of the target scrambling code is related to the first parameter, The first parameter is related to the physical cell identifier of the cell where the terminal device is located.

In this embodiment, the first part of the first system message is the system message scrambled by the target scrambling code, wherein the initialization seed of the target scrambling code is related to the first parameter, and the first parameter is related to the location of the terminal device. The physical cell identity of the cell is related. A specific implementation manner for determining the target scrambling code of the first part of the first system message is provided to improve the implementability of the solution.

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 the physical broadcast channel PBCH, and the first parameter includes:

or,

Among them, the

is the physical cell identifier of the cell where the terminal device is located, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

In this embodiment, the first system message may specifically be the master information block MIB carried on the physical broadcast channel PBCH, and in this case, the first parameter may be implemented in the above two manners. Therefore, in the scenario that the first system message is the main information block MIB carried on the physical broadcast channel PBCH, a variety of specific implementation modes of the first parameter are provided, which improves the practicability of the solution.

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

or,

Wherein, the c _init is the initialization seed of the target scrambling code, the

mod504 with the

is the first parameter, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

In this embodiment, the first parameter can be specifically realized by determining the initialization seed of the target scrambling code according to the physical cell identifier of the cell where the terminal device is located in the above two manners. Therefore, in a scenario where the first parameter is related to the physical cell identifier of the cell where the terminal device is located, various more specific implementation manners of the initialization seed of the target scrambling code are provided to improve the implementability of the solution.

or,

mod504 with the

is the first parameter, the n _f is the wireless frame number, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

In a possible implementation manner of the third aspect of the embodiment of the present application, the second time-frequency resource includes subframe 0 in the radio frame.

In this embodiment, the second time-frequency resource may specifically include subframe No. 0 in the radio frame, and a specific implementation manner of the second time-frequency resource is provided to improve the implementability of the solution.

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 No. 0 subframe.

In this embodiment, the second time-frequency resource may specifically include the last 11 OFDM symbols of the 14 OFDM symbols in the No. 0 subframe, so as to provide a more efficient second time-frequency resource. As a specific implementation method, the achievability of the scheme is further improved.

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 resource include frequency domain resources in at least one of the following frequency bands:

In this embodiment, the frequency domain resources in the first time-frequency resource include time-frequency resources 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 can pass the at least one frequency band. The first time-frequency resource in the system information is obtained. A variety of specific implementation manners of the first time-frequency resource are provided, which improves the implementability of the solution.

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

In this embodiment, when the terminal device receives the first system message sent from the network device on the first time-frequency resource, the first system message carried on the first time-frequency resource is used for the first communication system, and the first system message carried on the first time-frequency resource is used in the second communication system. The first part of the first system message carried on the 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. Wherein, in the process that the terminal device acquires the system message according to the first signal, since the first communication system and the second communication system are different communication systems, the terminal devices corresponding to different communication systems can pass the first time-frequency The resource identifies different system messages and can obtain system messages. In addition, compared with the network device sending 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 terminals corresponding to different communication systems The device obtains system messages and then accesses the network, which can reduce the overhead of network resources and device energy consumption caused by the network device sending different synchronization signals on different time-frequency resources, and improve communication efficiency.

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 carried in a third time-frequency resource, and the third time-frequency resource is a part of the first time-frequency resource Time-frequency resources, the third time-frequency resources are different from the second time-frequency resources, 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, and the initialization seed of the target scrambling code is related to the first parameter, The first parameter is related to the physical cell identifier of the cell where the terminal device is located.

In this embodiment, the first part of the first system message is the system message scrambled by the target scrambling code, wherein the initialization seed of the target scrambling code is related to the first parameter, and the first parameter is related to the location of the terminal device. The physical cell identity of the cell is related. A specific implementation manner for determining the target scrambling code of the first part of the first system message is provided, which improves the implementability of the solution.

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 the physical broadcast channel PBCH, and the first parameter includes:

or,

Among them, the

Indicates rounding down, and the / indicates division.

In this embodiment, the first system message may specifically be the master information block MIB carried on the physical broadcast channel PBCH, and in this case, the first parameter may be implemented in the above two manners. Therefore, in the scenario where the first system message is the master information block MIB carried on the physical broadcast channel PBCH, various specific implementation manners of the first parameter are provided to improve the practicability of the solution.

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

or,

mod504 with the

is the first parameter, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

or,

mod504 with the

Indicates rounding down, and the / indicates division.

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

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 resource 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 device, 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 on a first time-frequency resource, a first part of the first synchronization signal is carried on a second time-frequency resource, and the second time-frequency resource is the first time-frequency resource. A part of time-frequency resources in a time-frequency resource, wherein the first synchronization signal is used for the first communication system, the first part of the first synchronization signal is used for the second communication system, the first communication system communicates with the second communication system The system is a different communication system;

The transceiver unit is used for sending 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, and the third time-frequency resource is a part of the first time-frequency resource A time-frequency resource, 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 is the same as the 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 main synchronization signal PSS, and the first part of the first synchronization signal is obtained from 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 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 fifth aspect of the embodiment of the present application, the second time-frequency resource includes the No. 5 subframe in the 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 No. 5 subframe.

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, and the first part 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 the No. 9 subframe in the even-numbered 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 No. 9 subframe.

In a possible implementation manner of the fifth aspect of the embodiment of the present application, the physical cell identifier of the cell where the terminal device is located is related to a first parameter, and the first parameter is related to the second time-frequency resource in the first time-frequency resource is related to the relative position in , or, the first parameter is related to the 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 SSS, the physical cell identifier of the cell where the terminal device is located is related to the first parameter and the second parameter, and the second parameter is related to the The first sequence is associated with 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 PSS, the physical cell identifier of the cell where the terminal device is located is related to the first parameter and the second parameter, and the transceiver unit is further configured to :

The SSS is sent to the terminal device on a fourth time-frequency resource, the fourth time-frequency resource is different from the first time-frequency resource, and the second parameter is related to the SSS.

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

or,

Among them, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

The value of is a natural number not greater than 503.

Optionally, the

Can 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 resource 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 component modules of the communication device may also be used to perform the steps performed in each possible implementation manner of the first aspect. For details, refer to the first aspect, which will not be repeated here.

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

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

The processing unit is configured to acquire 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, and the third time-frequency resource is a part of the first time-frequency resource A time-frequency resource, 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 is the same as the 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 the main synchronization signal PSS, and the first part of the first synchronization signal is obtained by 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 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 the No. 5 subframe in the 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 No. 5 subframe.

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 part 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 the 9th subframe in the even-numbered 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 No. 9 subframe.

In a possible implementation manner of the sixth aspect of the embodiment of the present application, the physical cell identifier of the cell where the terminal device is located is related to a first parameter, and the first parameter and the second time-frequency resource are in the first time-frequency resource is related to the relative position of , 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 SSS, the physical cell identifier of the cell where the terminal device is located is related to the first parameter and the second parameter, and the second parameter is related to the The first sequence is associated with 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 PSS, the physical cell identifier of the cell where the terminal device is located is related to the first parameter and the second parameter, and the transceiver unit is further configured to :

The SSS from the network device is received on a fourth time-frequency resource, the fourth time-frequency resource is different from the first time-frequency resource, and the second parameter is related to the SSS number.

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

or,

Among them, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

The value of is a natural number not greater than 503.

Optionally, the

Can 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 resource 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 component modules of the communication device may also be used to perform the steps performed in each possible implementation manner of the second aspect. For details, refer to the second aspect, which will not be repeated here.

A seventh aspect of an embodiment of the present application provides a communication device, 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 on a first time-frequency resource, a first part of the first system message is carried on a second time-frequency resource, and the second time-frequency resource is the first time-frequency resource. A part of time-frequency resources in a time-frequency resource, wherein the first system message is used for the first communication system, the first part of the first system message is used for the second communication system, the first communication system communicates with the second communication system The system is a different communication system;

The transceiver unit is configured to send 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, the third time-frequency resource is a part of the first time-frequency resource, and the third time-frequency resource is part of the first time-frequency resource. The 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, an initialization seed of the target scrambling code is related to a first parameter, and the first parameter is related to the terminal device It is related to the physical cell identity of the cell where it is located.

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

or,

Among them, the

Indicates rounding down, and the / indicates division.

In a possible implementation manner, the first parameter is related to the physical cell identifier of the cell where the terminal device is located, including:

or,

mod504 with the

is the first parameter, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

or,

mod504 with the

Indicates rounding down, and the / indicates division.

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

In a possible implementation manner, the frequency domain resources in the first time-frequency resource 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 component modules of the communication device may also be used to perform the steps performed in each possible implementation manner of the third aspect. For details, please refer to the third aspect, which will not be repeated here.

An eighth aspect of an embodiment of the present application provides a communication device, including a processing unit and a transceiver unit;

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

The processing unit is configured to acquire the system message according to the first signal.

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 the location of the terminal device. The physical cell identity of the cell is related.

or,

Among them, the

Indicates rounding down, and the / indicates division.

or,

mod504 with the

is the first parameter, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

In a possible implementation manner, the first parameter is related to the physical cell identity of the cell where the terminal equipment is located, including:

or,

mod504 with the

Indicates rounding down, and the / indicates division.

In the eighth aspect of the embodiment of the present application, the component modules of the communication device may also be used to perform the steps performed in each possible implementation manner of the fourth aspect. For details, refer to the fourth aspect, which will not be repeated here.

A ninth aspect of an embodiment of the present application provides a communication device, wherein the communication device includes a processor, and the processor is coupled to a memory, where the memory is used for storing computer programs or instructions, and the processor is used for executing the computer in the memory A program or instruction, which causes the method described in the foregoing first aspect or any possible implementation manner of the first aspect to be executed, or causes the method described in the foregoing third aspect or any possible implementation manner of the third aspect to be executed implement.

A tenth aspect of an embodiment of the present application provides a communication device, wherein the communication device includes a processor, the processor is coupled to a memory, the memory is used for storing computer programs or instructions, and the processor is used for executing the computer in the memory. A program or instruction that causes the method described in the foregoing second aspect or any possible implementation manner of the second aspect to be executed, or causes the method described in the foregoing fourth aspect or any possible implementation manner of the fourth aspect to be executed implement.

An eleventh aspect of the embodiments of the present application provides a communication device, wherein the communication device includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instructions, so that the aforementioned first aspect Either the method described in any possible implementation manner of the first aspect is performed, or, the method described in the third aspect or any possible implementation manner of the third aspect is performed.

A twelfth aspect of an embodiment of the present application provides a communication device, wherein the communication device includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a computer program or instructions, so that the aforementioned second aspect Either the method described in any one possible implementation manner of the second aspect is performed, or, the method described in the foregoing fourth aspect or any one possible implementation manner of the fourth aspect is performed.

A thirteenth aspect of an embodiment of the present application provides a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the first aspect or any of the first aspects. A possible implementation manner, the method described in the third aspect or any of the possible implementation manners of the third aspect.

A fourteenth aspect of the embodiments of the present application provides a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the second aspect or any of the second aspects. The method described in one possible implementation manner, or the processor executes the method described in the fourth aspect or any one possible implementation manner of the fourth aspect.

A fifteenth aspect of the embodiments of the present application provides a computer program product (or computer program) that stores one or more computers. When the computer program product is executed by the processor, the processor executes the first aspect or the first aspect above. A method of any possible implementation manner of the aspect, the above third aspect, or any possible implementation manner of the third aspect.

A sixteenth aspect of the embodiments of the present application provides a computer program product that stores one or more computers. When the computer program product is executed by the processor, the processor may implement the second aspect or any one of the second aspects. or, the processor executes the fourth aspect or the method of any possible implementation manner of the fourth aspect.

A seventeenth aspect of an embodiment of the present application provides a chip system, where the chip system includes a processor for supporting a network device to implement the first aspect or any possible implementation manner of the first aspect, the third aspect or the third aspect. The functions involved in any possible implementation manner of the three aspects. In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

An eighteenth aspect of an embodiment of the present application provides a chip system, where the chip system includes a processor, configured to support a terminal device to implement the second aspect or any possible implementation manner of the second aspect, the fourth aspect or the third aspect The functions involved in any possible implementation of the four aspects. In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

A nineteenth aspect of an embodiment of the present application provides a communication system, where the communication system includes the communication device of the fifth aspect and the communication device of the sixth aspect, or, the communication system includes the communication device of the seventh aspect and the eighth aspect The communication device of the aspect, or the communication system includes the communication device of the ninth aspect and the communication device of the tenth aspect, or the communication system includes the communication device of the eleventh aspect and the communication device of the twelfth aspect.

Among them, the technical effects brought by the fifth, seventh, ninth, eleventh, thirteenth, fifteenth, seventeenth and nineteenth aspects or any of the possible implementation manners may refer to the first aspect Or the technical effects brought by different possible implementations of the first aspect, or refer to the third aspect or the technical effects brought by different possible implementations of the third aspect, which will not be repeated here.

Among them, the technical effects brought by the sixth, eighth, tenth, twelfth, fourteenth, sixteenth, eighteenth and nineteenth aspects or any of the possible implementation manners can refer to the second aspect Or the technical effects brought by different possible implementations of the second aspect, or refer to the fourth aspect or the technical effects brought by different possible implementations of the fourth aspect, which will not be repeated here.

It can be seen from the above technical solutions that some embodiments provided by this application have the following advantages: 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 The signal 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 network device sending 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 connect to each other. It can reduce the overhead of network resources and device energy consumption caused by network devices sending different synchronization signals on different time-frequency resources, and improve communication efficiency.

Description of drawings

1 is a schematic diagram of a communication system provided by an embodiment of the present application;

FIG. 2-1 is a schematic diagram of a radio frame structure provided by an embodiment of the application;

2-2 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 3 is another schematic diagram of a radio frame structure provided by an embodiment of the present application;

FIG. 4 is another schematic diagram of a radio frame structure provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a communication method provided by an embodiment of the present application;

FIG. 6-1 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 6-2 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

6-3 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 7-1 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 7-2 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

7-3 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 8-1 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

8-2 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

8-3 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 9-1 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 9-2 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

9-3 is another schematic diagram of a radio frame structure provided by an embodiment of the application;

FIG. 10 is another schematic diagram of a radio frame structure provided by an embodiment of the present application;

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

FIG. 12 is another schematic diagram of a radio frame structure provided by 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 apparatus provided by an embodiment of the present application;

FIG. 15 is a schematic diagram of another communication apparatus provided by 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. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1. Terminal device: It can be a wireless terminal device that can receive network equipment scheduling and instruction information. The wireless terminal device can be a device that provides voice and/or data connectivity to users, or a handheld device with a wireless connection function, or a connection other processing equipment to the wireless modem.

Terminal equipment can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal equipment can be a mobile terminal equipment, such as a mobile phone (or "cellular" phone, mobile phone (mobile phone), computer and data cards, for example, may be portable, pocket-sized, hand-held, computer built-in or vehicle mounted mobile devices that exchange language and/or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets Computer (Pad), computer with wireless transceiver function and other equipment. Wireless terminal equipment may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (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 future evolved public land mobile network (PLMN).

2. Network device: It can be a device in a wireless network. For example, a network device can be a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, also known as a base station. At present, some examples of RAN equipment are: generation Node B (gNodeB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), wireless network in the 5G communication system Controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved Node B , or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc. In addition, in a network structure, the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.

Wherein, the network device can send configuration information to the terminal device (for example, carried in a scheduling message and/or an instruction message), and the terminal device further performs network configuration according to the configuration information, so that the network configuration between the network device and the terminal device is aligned; or , through the network configuration preset in the network device and the network configuration preset in the terminal device, the network configuration between the network device and the terminal device is aligned. Specifically, "alignment" refers to the determination of the carrier frequency for sending and receiving the interaction message, the determination of the type of the interaction message, the meaning of the field information carried in the interaction message, or the The understanding of other configurations of interactive messages is consistent.

In addition, in other possible cases, the network device may be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For convenience of description, the embodiments of the present application are not limited.

The network equipment may also include core network equipment, such as access and mobility management function (AMF), user plane function (UPF) or session management function (SMF) Wait.

In this embodiment of the present application, the apparatus for implementing the function of the network device may be the network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device. In the technical solutions provided by the embodiments of the present application, the technical solutions provided by the embodiments of the present application are described by taking the device for realizing the function of the network device being a network device as an example.

3. The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or importance of multiple objects degree.

FIG. 1 is a schematic diagram of the communication system in this application. In FIG. 1 , one network device 101 and six terminal devices are exemplarily shown, and the six terminal devices are terminal device 102 , terminal device 103 , terminal device 104 , terminal device 105 , terminal device 106 , terminal device 107 , etc. . In the example shown in FIG. 1 , the terminal device 102 is a vehicle, the terminal device 103 is a smart air conditioner, the terminal device 104 is a smart fuel dispenser, the terminal device 105 is a mobile phone, the terminal device 106 is a smart teacup, and the terminal device 107 is a The printer is illustrated as an example.

Among them, the communication system shown in FIG. 1 can be applied to a low power wide area (LPWA) scenario. LPWA refers to a low-power wide-area network. LPWA has three characteristics of "long-distance communication", "low-rate data transmission" and "low power consumption", so it is very suitable for those long-distance transmission, the amount of communication data is small, and the battery is required. Power long-running IoT applications. Among them, narrowband internet of things (NB-IoT), enhanced machine type communication (eMTC), and narrowband (NB) new radio (NR), etc., are Typical IoT technology for LPWA.

In NB-IOT communication, the Internet of Things (IoT) is the "Internet of Things Connected". It extends the user end of the Internet to any item and item for information exchange and communication. Such a communication method is also called inter-machine communication (machine type communications, MTC), and the communicating nodes are called MTC terminals. Typical IoT applications include possible applications including various aspects such as smart grid, smart agriculture, smart transportation, smart home, and environmental detection. Since the Internet of Things needs to be applied in a variety of scenarios, such as from outdoor to indoor, from above ground to underground, many special requirements are put forward for the design of the Internet of Things, including a number of items 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 basements where wireless network signals are poor. At this time, coverage enhancement technology is needed to solve.

(2) Support a large number of low-speed devices: The number of MTC devices is much larger than the number of devices that communicate with people, but the transmitted data packets are small and not sensitive to delay.

(3) Very low cost: Many MTC applications require that MTC equipment can be obtained and used at very low cost, enabling large-scale deployment.

(4) Low energy consumption: In most cases, MTC devices are powered by batteries. But at the same time, in many scenarios, MTC requires that it can be used for more than ten years without battery replacement. This requires MTC devices to work with extremely low power consumption.

Facing the emergence of emerging applications such as MTC communication, smart city, intelligent transportation, unmanned driving, virtual reality (VR) and augmented reality (AR), 5G new radio (NR) will support enhanced Mobile bandwidth (enhanced mobile broadband, eMBB), low latency and high reliability communication (ultra-reliable and low latency communication, URLLC) and large-scale Internet of Things (massive machine type communication, mMTC) three applications. Currently 3GPP R15 and R16 NR are mainly aimed at eMBB and URLLC applications. Among them, eMBB deals with human-centric usage scenarios, involving user access to multimedia content, services and data. eMBB will meet the needs of the explosive growth of data traffic and the increase in the number of users, and is committed to providing a better user experience. Compared with the fourth generation (fourth generation, 4G) communication network, eMBB can support higher rates and lower latency. At present, a series of standardization work has been carried out for eMBB and URLLC scenarios. For mMTC, the industry is discussing the introduction of NR reduced capability (REDCAP) REDCAP, and downlink synchronization considers multiplexing the synchronization signal/physical broadcast channel block in NR (synchronization signal). /physical broadcast channel block, SS/PBCH block or SSB), SSB can also be referred to as synchronization signal block or initial access signal, and the main application scenarios focus on some non-LPWA scenarios, such as video surveillance, industrial Internet of Things, wearable devices Wait.

Currently, a network device sends an initial access signal (SSB) to a terminal device, and the terminal device can use the initial access signal to complete synchronization with a cell in time and frequency 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 the LPWA scenario, there are many different communication systems, and network devices need to send different initial access signals on different time-frequency resources for different communication systems, so that terminal devices corresponding to different communication systems can access network devices.

In the LPWA scenario, the synchronization signal obtained by the terminal equipment corresponding to the NB-IOT communication system includes a narrowband primary synchronization signal (NPSS) and a narrowband secondary synchronization signal (NSSS); System messages include a master information block (MIB) carried on a narrowband physical broadcast channel (NPBCH). Exemplarily, the cell search process of the terminal device is the process that the terminal device completes time and frequency synchronization (instant frequency synchronization) with the cell base station and obtains the cell ID by detecting the synchronization signal. The synchronization signals of NB-IoT include NPSS and NSSS, where NPSS is used to complete time and frequency domain synchronization, and NSSS carries 504 cell ID information and 80ms frame timing information (that is, which radio frame is in 80ms).

Figure 2-1 shows a schematic diagram of the time domain positions of NPSS, NSSS and NPBCH in a radio frame, where NPSS is sent on subframe 5 of each radio frame, NSSS is sent on subframe 9 of an even-numbered radio frame, and NPBCH is sent on subframe 9 of an even-numbered radio frame. Sent on subframe 0 of each radio frame. In a subframe, NPSS, NSSS, and NPBCH all occupy the last 11 symbols of the subframe.

There may be different implementations of subframe 5 and subframe 9 in different frame structures. Exemplarily, taking the frame structure of a radio frame including 10 subframes and the subframes numbered from 0 to 9 as an example (the frame structure shown in Figure 2-1), the NPBCH can be carried in subframe No. 0, NPSS can be carried in subframe No. 5, and NSSS can be carried in subframe No. 9; taking the frame structure of a radio frame including 10 subframes and the subframes numbered from 1 to 10 as an example, NPBCH can be carried in 1 In subframe No. 6, NPSS can be carried in subframe No. 6, and NSSS can be carried in subframe No. 10.

In addition, as shown in Figure 2-2, the radio frame (n _f ) can be numbered from 0 to 1023, and an even-numbered radio frame refers to a radio frame whose radio frame number satisfies the following conditions: n _f mod 2=0, where n _f is the wireless frame number, mod represents the remainder operation. As shown in Figure 2-2, the

radio frame numbers

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

radio frame numbers

1, 3, 5, 7, 9...1023, etc. are non-even radio frames. frame, or odd radio frame.

The specific implementation process of NPSS, NSSS and NPBCH will be exemplarily described below.

1) Take the NPSS located in the subframe 5 of the radio frame number 0 in FIG. 2-1 as an example for description. Among them, the NPSS is designed based on the short sequence. The NPSS is carried on the last 11 OFDM symbols of subframe 0. The sequence corresponding to each OFDM symbol is composed of a ZC sequence with a length of 11 and a scrambling code with a length of 11. , the sequence and scrambling code satisfy the mode (1). Among them, the way (1) includes:

In the method (1), d _l (n) is the NPSS sequence, S (l) is the scrambling code, the following table 1 shows that the cyclic prefix length is normal, that is, the normal cyclic prefix ), where n is 11,

is a ZC sequence of length 11, u=5.

Table 1

2) The NSSS located in the subframe 9 of the radio frame number 0 in FIG. 2-1 is used as an example for description. Among them, NSSS is designed based on a long sequence, and consists of a ZC sequence with a length of 131 and a binary scrambling sequence, and the ZC sequence and the binary scrambling sequence satisfy the mode (2). Among them, the way (2) includes:

In the relevant parameters of the mode (2), the following correlations are satisfied:

n=0,1,...,131;

n′=n mod 131;

m=n mod 128;

In mode (2), d(n) is the NSSS sequence, b _q (m) is the binary scrambling sequence,

is the ZC sequence of length 131, u is the root factor of the ZC sequence, θ _f is the cyclic shift of the ZC sequence, and n _f is the wireless frame number.

Among them, in the binary scrambling code sequence b _q (m), m takes a value from 0 to 127, and different values of q correspond to b _q (m) as shown in Table 2. In addition, both u and q are related to the NB-IoT cell ID (cell ID), that is, the NB-IoT cell ID is jointly indicated by the root factor of the ZC sequence and the binary scrambling sequence. Taking Figure 2-2 as an example, n _f is the wireless frame number, and the value of n _f can be 0, 1, 2, ..., 1023. When n _f is 0, 8, 16, ..., 1016, θ The values of _f are the same, that is, when the length of the radio frame is 10 ms, the boundary corresponding to the time length of 80 ms for every eight radio frames can be indicated by the cyclic shift θ _f .

Table 2

3) The NPBCH located in the subframe 0 of the radio frame number 0 in FIG. 2-1 is used as an example for description. To support In-band deployment, NPBCH needs to avoid some LTE signal/channel collisions with LTE. Specifically, in a subframe, the NPBCH will avoid the downlink reference signal of LTE, that is, the location of the cell-specific reference signal (CRS). REs, that is, the CRS positions in the first 3 OFDM symbols and the last 11 OFDM symbols; and, NPBCH will avoid the downlink reference signal of NB-IoT, that is, the narrowband reference signal (NRS) position of NB-IoT, NRS port 0 (NRS port0), NRS port 1 (NRS port1) as shown in Figure 3.

Among them, NPBCH is used to carry MIB. Exemplarily, the MIB has a total of 34 bits (bits), plus 16 bits of check bits, such as a cyclic redundancy check (cyclic redundancy check, CRC), a total of 50 bits. After channel coding and rate matching, a total of 1600 bits are obtained. After bit-level scrambling, the bit-level scrambled bits are divided into 8 coding sub-blocks with a size of 200 bits. Quadrature phase shift keying (QPSK) modulation is used for each coded sub-block. And then through the symbol level (symbol) level of scrambling. As shown in Figure 4. In every 80ms, each coded subblock is repeatedly transmitted 8 times, that is, one transmission of the corresponding coded subblock on each subframe 0 within 80ms.

In Bit-level scrambling, the bits after rate matching are scrambled using a cell-specific scrambling sequence, and the Bit-level scrambling sequence satisfies the radio frame of the system frame number (SFN) mod 64=0 initialization. The initialization seed of Bit-level scrambling code is:

Among them, "mod" represents the remainder operation,

For the NB-IoT cell ID, the bit-level scrambling sequence is initialized every 640ms, and the generated length is 1600.

In Symbol-level scrambling, each coded sub-block is modulated with QPSK to obtain a symbol with a length of 100, which is scrambled with a cell-specific symbol-level scrambling sequence, which satisfies mode (3). Among them, the way (3) includes:

In mode (3), _cf (j), j=0,...,199 is a Gold sequence, the Gold sequence is initialized at each radio frame, and the initialization seed is:

in,

is the NB-IoT cell ID, n _f is the radio frame number, and "mod" means the remainder operation.

At this time, because in the NB-IOT communication system, the bandwidth size of the frequency domain resource used to carry the initial access signal is 1 physical resource block (physical resource block, PRB). In order to meet the needs of the explosive growth of data traffic and the increase in the number of users, in other application scenarios of LPWA, taking narrowband NR as an example, the bandwidth of a narrowband NR communication system is much larger than that of one PRB, such as 10 PRBs. Bandwidth size, or 20 PRB bandwidth size, or larger PRB bandwidth size. As a result, the network device needs to send different initial access signals on different time-frequency resources for the NB-IOT communication system and the narrowband NR communication system, such as different primary synchronization signals, different secondary synchronization signals, and different primary information. block, to respectively implement the terminal equipment corresponding to NB-IOT and the terminal equipment corresponding to narrowband NR to access network equipment.

However, for the initial access signals of different communication systems, the network equipment needs to carry them on different time-frequency resources and send them respectively, that is, when the terminal equipment accesses the network equipment, the network equipment needs to send different initial access signals multiple times Incoming signal, this process is likely to lead to a large overhead of network resources and device energy consumption of network devices, affecting communication efficiency.

In order to solve the above technical problems, the embodiments of the present application provide various solutions, which can be implemented from different perspectives of solving the problems, which will be introduced in detail below.

FIG. 5 is a schematic diagram of a communication method in an embodiment of the present application. As shown in FIG. 5 , the communication method includes the following steps.

S101. A network device determines a first synchronization signal.

In this embodiment, the network device determines the first synchronization signal, the first synchronization signal is carried on the first time-frequency resource, the first part of the first synchronization signal is carried on the second time-frequency resource, and the second time-frequency resource is the first time-frequency resource. Part of the time-frequency resources in a time-frequency resource. Wherein, the first synchronization signal is used for the first communication system, the first part of the first synchronization signal is used for the 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 part of the first synchronization signal is carried in the third time-frequency resource, and the third time-frequency resource is The three time-frequency resources are part of the first time-frequency resources, and the third time-frequency resources are different from the second time-frequency resources.

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, the first part of the first synchronization signal is carried on the second time-frequency resource, the second part of the first synchronization signal is carried on the third time-frequency resource, and the sequence of the first part of the first synchronization signal is the same as the first part of the first synchronization signal. The sequence of the second part of a synchronization signal is the same, so that there are at least two parts in the first synchronization signal that carry the same sequence.

Furthermore, the sequence of the first portion of the first synchronization signal may be different from the sequence of the second portion of the first synchronization signal. Specifically, the first part of the first synchronization signal is carried on the second time-frequency resource, the second part of the first synchronization signal is carried on the third time-frequency resource, and the sequence of the first part of the first synchronization signal is the same as the first part of the first synchronization signal. The sequences of the second parts of a synchronization signal are different, so that there are at least two parts in the first synchronization signal that carry different sequences. Compared with the manner in which different parts of the first synchronization signal carry the same sequence, it can make the sequence of the second part of the first synchronization signal more likely to change, not only limited to the first synchronization signal with the first synchronization signal. part of the sequence is the same.

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. Wherein, the physical cell identifier of the cell where the terminal device of the first communication system is located is related to a first parameter, and the first parameter is related to the relative position of the second time-frequency resource in the first time-frequency resource, or the first parameter is related to the first time-frequency resource. A parameter is related to the 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 where the terminal device is located is related to the first parameter, and the first parameter may specifically select different values according to different implementations of the first synchronization signal. Wherein, the first parameter may be related to the relative position of the second time-frequency resource in the first time-frequency resource, for example, different values of the first parameter are determined according to the difference in the relative position; or, the The first parameter may be related to a third scrambling code, and the first synchronization signal is a signal scrambled by the third scrambling code. For example, different first parameters are determined according to different third scrambling codes. That is, through different implementations of the first synchronization signal, multiple values of the first parameter can be determined.

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, the second The time-frequency resources are part of the time-frequency resources in the first time-frequency resources. 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 NR, narrowband NR or other communication systems, and the second communication system may be NB-IOT, eMTC or other communication systems.

Exemplarily, the first communication system to which the first synchronization signal is applied is narrowband NR, and the second communication system to which the first part of the first synchronization signal is applied is NB-IOT as an example for description. In the following examples, the first synchronization signal may be the primary synchronization signal PSS or the secondary synchronization signal SSS, and the two different scenarios will be described below respectively.

1. The first synchronization signal is the main synchronization signal PSS.

In a possible implementation manner, when the first synchronization signal is the primary synchronization signal PSS in the narrowband NR, the generation method or the acquisition method of the sequence of the first part of the first synchronization signal and the sequence of the NPSS in the NB-IOT The same, 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 the scenario where the cyclic prefix length is normal, that is, the normal cyclic prefix, the first scrambling code is {1, 1, 1, 1, - 1, -1, 1, 1, 1, -1, 1}; in the scenario where the cyclic prefix length (cyclic prefix length) is extended, that is, the extended cyclic prefix (extended cyclic prefix), the first scrambling code It can be other values, which are not limited here. In addition, for the implementation of the NPSS, reference may be made to the above-mentioned Table 1 and the related implementation process of Table 1, which will not be repeated here.

In a possible implementation process of the second time-frequency resource, the second time-frequency resource carrying the NPSS includes the No. 5 subframe in the radio frame, that is, the No. 5 subframe in each radio frame, the second time-frequency resource. The time domain position of the resource may specifically be the last 11 OFDM symbols in the 14 orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols in the No. 5 subframe. Specifically, the System Frame Number (SFN) is the number of the radio frame or the system frame, and the specific range of the number of the system frame is 0, 1, 2, ..., 1023, as shown in Figure 2-2. Wherein, each radio frame or system frame includes 10 subframes, and the number of specific subframes ranges from 0, 1, 2, . . . , 9. For the NR system, one time slot (slot) includes 14 OFDM symbols. When the subcarrier spacing is 15 kilohertz (kHz), the length of one time slot is 1 ms. At this time, the subframe length is equal to the time The slot length is equal to 1 ms. Therefore, when the subcarrier spacing is 15 kHz, the subframes and time slots in this embodiment can be equivalently replaced. Taking the frame structure of a radio frame including 10 subframes and the subframes numbered from 0 to 9 as an example (as shown in Figure 2-1), the second time-frequency resource carrying the NPSS may specifically include subframe No. 5 Or a time slot; taking the frame structure of a radio frame including 10 subframes and the subframes numbering 1 to 10 as an example, the second time-frequency resource carrying the NPSS may specifically include subframe No. 6 or time slot; in addition, , the second time-frequency resource used to carry the NPSS, in the scenarios of different radio frame structures, the subframe number of the second time-frequency resource may also be other values, which are not limited here.

In a possible implementation process of the first time-frequency resource, the PSS carried by the first time-frequency resource occupies multiple consecutive resource blocks (RBs) in the frequency domain, where RB refers to 12 subcarriers in the frequency domain . The PSS occupies at least one subframe in the time domain, and the first time-frequency resources occupied by the PSS include second time-frequency resources. The second time-frequency resource is used to carry 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 that of the NPSS. That is, in the first part of the first time-frequency resource, the sequence carried on the last 11 OFDM symbols in each subframe is composed of the ZC sequence in the NPSS and the scrambling code.

6-1 is a schematic diagram of a radio frame in which the first synchronization signal is PSS, wherein the first time-frequency resource is used to carry the first synchronization signal, and the first synchronization signal includes at least a first part and a second part. In Figure 6-1, the PSS occupies multiple consecutive RBs in the frequency domain, and each RB can be regarded as a different part of the first synchronization signal, that is, the "shadow block NPSS" in Figure 6-1 is the first part of the first synchronization signal , and the "blank block NPSS" is the second part of the first synchronization signal.

In the solution shown in Figure 6-1, the first time-frequency resource occupied by the PSS includes the second time-frequency resource and the third time-frequency resource, the sequence carried on the second time-frequency resource and the generation method or acquisition method of the NPSS Similarly, the sequence carried on the third time-frequency resource is also the same as the generation method or the acquisition method of the NPSS. Specifically, PSS occupies at least one subframe in the time domain. Since NPSS only occupies the last 11 OFDM symbols among the 14 OFDM symbols, the sequence on each of the two RBs is the same as that of NPSS, occupying 1 subframe. The last 11 OFDM symbols of the 14 OFDM symbols in . That is, the sequence of the first part of the first synchronization signal is the same as the sequence of the second part of the first synchronization signal, and the second part of the first synchronization signal can be directly obtained by copying the second part of the first synchronization signal.

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 to carry the first synchronization signal, and the first synchronization signal includes at least a first part and a second part. In Figure 6-2, the PSS occupies multiple consecutive RBs in the frequency domain, and each RB can be regarded as a different part of the first synchronization signal, that is, the "shadow block NPSS" in Figure 6-2 is the first synchronization signal. One part, "New Sequence Design of Blank Blocks" is the second part of the first synchronization signal.

In the solution shown in Figure 6-2, the PSS occupies at least one subframe in the time domain, and the first time-frequency resources occupied by the PSS include second time-frequency resources and third time-frequency resources. The borne sequence is the same as the generation method or the acquisition method of the NPSS, and the sequence borne on the third time-frequency resource is different from the generation method or acquisition method of the NPSS. Specifically, the PSS occupies two RBs in the frequency domain and 1 subframe in the time domain, one of which is composed of 1 RB in the frequency domain and 1 subframe in the time domain. The sequence borne on the second time-frequency resource and the NPSS The generation method or the acquisition method is the same, and another third time-frequency resource composed of one RB in the frequency domain and one subframe in the time domain carries a newly designed sequence.

Optionally, the second time-frequency resource may be the same as the generation method or acquisition method of the NPSS for the last 11 OFDM symbols to carry the sequence, the first 3 OFDM symbols are idle and do not carry any sequence, and the third time-frequency resource carries the new sequence;

Optionally, the second time-frequency resource may be a sequence carried by the last 11 OFDM symbols in the same manner as the generation or acquisition method of the NPSS, the first three OFDM symbols are idle, and the third time-frequency resource carries a new sequence, and the new sequence includes: The sequence 1 carried in the first 3 OFDM symbols and the sequence carried in the last 11 OFDM symbols are generated or acquired in the same manner as the NPSS;

Optionally, the second time-frequency resource may be the sequence borne by the last 11 OFDM symbols in the same manner as the generation or acquisition method of the NPSS, the first 3 OFDM symbols are sequence 1, and the third time-frequency resource bears a new sequence;

Optionally, the second time-frequency resource may be the sequence carried by the last 11 OFDM symbols in the same manner as the generation or acquisition of the NPSS, the first three OFDM symbols are sequence 1, and the third time-frequency resource carries a new sequence, which is the new sequence. The sequence includes sequence 2 carried in the first three OFDM symbols, and the sequence carried in the last 11 OFDM symbols is generated or acquired in the same manner as the NPSS. The sequences carried on the first three OFDM symbols of the second time-frequency resource and the third time-frequency resource may or may not be the same.

2. The first synchronization signal is the secondary synchronization signal SSS.

In a possible implementation manner, when the first synchronization signal is the secondary synchronization signal SSS in the narrowband NR, the generation method or the acquisition method of the first part of the first synchronization signal may be the same as the generation method of the NSSS in the NB-IOT or The acquisition method is the same, wherein the NSSS is obtained from the second sequence and the second scrambling code. In NSSS, the second sequence is a ZC sequence with a length of 131, and the second scrambling code is a binary scrambling code. For the implementation of the NSSS, reference may be made to the above-mentioned Table 2 and the related implementation process of Table 2, which will not be repeated here.

In a possible implementation process of the second time-frequency resource, the second time-frequency resource carrying the NSSS includes subframe No. 9 in an even-numbered radio frame, that is, subframe No. 9 in each even-numbered radio frame, the second time-frequency resource The time domain position of the time-frequency resource may specifically be the last 11 OFDM symbols in the 14 OFDM symbols in the No. 9 subframe. The System Frame Number (SFN) is the number of the radio frame or the system frame. The specific range of the number of the system frame is 0, 1, 2, ..., 1023, as shown in Figure 2-2. Wherein, each radio frame or system frame includes 10 subframes, and the number of specific subframes ranges from 0, 1, 2, . . . , 9. For the NR system, one time slot (slot) includes 14 OFDM symbols. When the subcarrier spacing is 15 kilohertz (kHz), the length of one time slot is 1 ms. At this time, the subframe length is equal to the time The slot length is equal to 1 ms. Therefore, when the subcarrier spacing is 15 kHz, the subframes and time slots in this embodiment can be equivalently replaced. Taking the frame structure of a radio frame including 10 subframes and the subframes numbered from 0 to 9 as an example (as shown in Figure 2-1), the second time-frequency resource carrying the NSSS may specifically include subframe No. 9 Or a time slot; taking the frame structure of a radio frame including 10 subframes and the subframes numbered from 1 to 10 as an example, the second time-frequency resource carrying the NSSS may specifically include the 10th subframe or time slot; in addition, , the second time-frequency resource used to carry the NSSS. In scenarios where different radio frame structures are implemented, the subframe number of the second time-frequency resource may also be other values, which are not limited here.

In a possible implementation process of the first time-frequency resource, the SSS carried by the first time-frequency resource occupies multiple consecutive RBs in the frequency domain, where the RBs refer to 12 subcarriers in the frequency domain. The SSS occupies at least one subframe in the time domain, and the first time-frequency resources occupied by the SSS include second time-frequency resources. The second time-frequency resource is used to carry 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 that of the NSSS. That is, in the first part of the first time-frequency resource, the sequence carried on the last 11 OFDM symbols in each subframe is composed of the ZC sequence in the NSSS and the binary scrambling code scrambling.

8-1 is a schematic diagram of a radio frame in which the first synchronization signal is SSS, wherein the first time-frequency resource is used to carry the first synchronization signal, and the first synchronization signal includes at least a first part and a second part. In Figure 8-1, the SSS occupies multiple consecutive RBs in the frequency domain, and each RB can be regarded as a different part of the first synchronization signal, that is, the "shaded block NSSS" in Figure 8-1 is the first part of the first synchronization signal , and the "blank block NSSS" is the second part of the first synchronization signal.

In the solution shown in Figure 8-1, the first time-frequency resource occupied by the SSS includes the second time-frequency resource and the third time-frequency resource, the sequence carried on the second time-frequency resource and the generation method or the acquisition method of the NSSS Similarly, the sequence carried on the third time-frequency resource is also the same as the generation method or the acquisition method of the NSSS. Specifically, SSS occupies at least one subframe in the time domain. Since NSSS only occupies the last 11 OFDM symbols among the 14 OFDM symbols, the sequence on each of the two RBs is the same as that of NSSS, occupying 1 subframe. The last 11 OFDM symbols of the 14 OFDM symbols in . That is, the sequence of the first part of the first synchronization signal is the same as the sequence of the second part of the first synchronization signal, and the second part of the first synchronization signal can be directly obtained by copying the second part of the first synchronization signal.

8-2 is a schematic diagram of another radio frame in which the first synchronization signal is SSS, wherein the first time-frequency resource is used to carry the first synchronization signal, and the first synchronization signal includes at least a first part and a second part. In Figure 8-2, the SSS occupies multiple consecutive RBs in the frequency domain, and each RB can be regarded as a different part of the first synchronization signal, that is, the "shaded block NSSS" in Figure 8-2 is the first synchronization signal. One part, "New Sequence Design of Blank Blocks" is the second part of the first synchronization signal.

In the solution shown in Figure 8-2, the SSS occupies at least one subframe in the time domain, and the first time-frequency resource occupied by the SSS includes a second time-frequency resource and a third time-frequency resource. The borne sequence is the same as the generation method or the acquisition method of the NSSS, and the sequence borne on the third time-frequency resource is different from the generation method or acquisition method of the NSSS. Specifically, the SSS occupies two RBs in the frequency domain and 1 subframe in the time domain, one of which is composed of 1 RB in the frequency domain and 1 subframe in the time domain. The sequence carried on the second time-frequency resource and the NSSS The generation method or the acquisition method is the same, and another third time-frequency resource composed of one RB in the frequency domain and one subframe in the time domain carries a newly designed sequence.

Optionally, the second time-frequency resource can be the same as the NSSS generation method or acquisition method of the last 11 OFDM symbols bearing the sequence, the first 3 OFDM symbols are idle and do not bear any sequence, and the third time-frequency resource bears the new sequence;

Optionally, the second time-frequency resource may be the sequence carried by the last 11 OFDM symbols in the same manner as the generation or acquisition method of the NSSS, the first three OFDM symbols are idle, and the third time-frequency resource carries a new sequence, and the new sequence includes: The sequence 1 carried in the first 3 OFDM symbols and the sequences carried in the last 11 OFDM symbols are generated or acquired in the same way as the NSSS;

Optionally, the second time-frequency resource may be the sequence borne by the last 11 OFDM symbols in the same manner as the generation or acquisition method of the NSSS, the first 3 OFDM symbols are sequence 1, and the third time-frequency resource bears the new sequence;

Optionally, the second time-frequency resource may be the sequence carried by the last 11 OFDM symbols in the same manner as the generation or acquisition of the NSSS, the first three OFDM symbols are sequence 1, and the third time-frequency resource carries a new sequence, which is the new sequence. The sequence includes sequence 2 carried in the first 3 OFDM symbols, and the sequence carried in the last 11 OFDM symbols is generated or acquired in the same manner as the NSSS. The sequences carried on the first three OFDM symbols of the second time-frequency resource and the third time-frequency resource may or may not be the same.

In a possible implementation manner, the frequency domain resources in the first time-frequency resource 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. The frequency domain resources in the first time-frequency resources include frequency resources 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 at least one frequency band may refer to the content of Table 3. In Table 3, the network equipment is a base station (BS) and the terminal equipment is a UE as an example, the first column is the NR operating band (NR operating band), that is, the at least one frequency band above; the second column is the uplink operating frequency band ( Uplink operating band), that is, the range from low frequency to high frequency that BS receives/UE transmits (BS receive/UE transmit F _UL,low -F _UL,high ), in megahertz (MHz); the third column is the downlink operating band (Downlink operating band), that is, the range from low frequency to high frequency sent by BS/UE received by UE (BS receive/UE transmit F _DL,low -F _DL,high ), in megahertz (MHz); the fourth column is duplex Mode (Duplex mode), the value may be frequency division duplexing (frequency division duplexing, FDD), time division duplexing (time division duplexing, TDD).

Among them, the regulations made to unify the frequency range of communication systems such as LTE or NR. For example, the regulations on frequency bands in Section 5.2 (Table 5.2-1) of TS38.104 of the new air interface NR protocol. Among them, each frequency band has its specific number, as mentioned above, the numbers are n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n28, n41, n65, n66, n70, n71 The frequency bands corresponding to , n74, and n90 can be used to deploy NB-IoT. Each frequency band has a corresponding frequency range, which can be subdivided into an uplink frequency range and a downlink frequency range. The transmission of the network equipment and the reception of the terminal equipment need to be performed within the corresponding frequency range of the supported frequency band.

table 3

Specifically, the first communication system to which the first synchronization signal is applied is narrowband NR, and the second communication system to which the first part of the first synchronization signal is applied is NB-IOT as an example. For example, the frequency bands of narrowband NR deployment supported by NB-IoT include n1, n2, n3, n5, n7, n8, n12, n14, n18, n20, n25, n28, n41, n65, n66, n70, n71, n74, n90 . Controlling that the first time-frequency resource is 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 NB-IOT NPSS, NSSS, and NPBCH transmission. Please refer to Table 4 for details. Table 4 shows the implementation process of some frequency bands. In Table 4, "NR operating band" indicates the frequency band supported by NR; "SS Block SCS" indicates the subcarrier spacing of SSB, in kilohertz (kHz); the value "Y" means "yes", and the value N means "no".

As shown in Table 4 below, only some of the frequency bands supported by NR are used as an example, in which NB-IoT supports some of the frequency bands, that is, the frequency band corresponding to "Y" in the third column in Table 4. In this embodiment, corresponding to some frequency bands supported by NB-IoT, synchronization signals can be sent and received according to the implementation methods of the embodiments shown in FIG. 5 to FIG. 10 . The synchronization signal is sent and received according to the implementation manners of the embodiments shown in FIG. 5 to FIG. 10 . Corresponding to part of the frequency band supported by NB-IoT, synchronization signals can be sent and received according to different implementations from the embodiments shown in FIG. The new synchronization signal design scheme transmits and receives synchronization signals. Corresponding to the frequency band not supported by NB-IoT, that is, the frequency band corresponding to the value of “N” in the third column of Table 4, the synchronization signal can be sent and received according to the implementation mode different from the embodiments shown in FIG. 5 to FIG. 10, that is, according to a A new synchronization signal design scheme transmits the synchronization signal.

Table 4

S102. The network device sends a first synchronization signal to the terminal device 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. Correspondingly, in step S102, the terminal device receives the first synchronization signal from the network device on the first time-frequency resource.

The network device may send the processed first synchronization signal to the terminal device in step S102 after processing the first synchronization signal according to preset scrambling and other methods. Correspondingly, in step S102, the terminal device obtains the first synchronization signal by using the configuration or pre-configured descrambling, etc., so as to perform subsequent steps according to the first synchronization signal. Specifically, configuration means that the base station or server sends configuration information or parameter values of some parameters to the terminal through messages or signaling, so that the terminal can determine communication parameters or resources during transmission according to these values or information. Pre-configuration is similar to configuration. It can be the way that the base station or server sends parameter information or values to the terminal through another link or carrier different from the sideline; it can also be to define the corresponding parameters or parameter values, or By writing the relevant parameters or values to the terminal device in advance. This application does not limit this.

S103. The terminal device 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 acquires time-frequency synchronization according to the first synchronization signal.

Wherein, the terminal device of narrowband NR can acquire time-frequency synchronization according to the first synchronization signal, and the terminal device of NB-IOT can acquire time-frequency synchronization according to the first part of the first synchronization signal.

Specifically, the process of acquiring the time-frequency synchronization by the narrowband NR terminal device according to the first synchronization signal may include: in order to detect the first synchronization signal, the narrowband NR terminal device generates a local first synchronization signal according to the solution of this embodiment. , where the local first synchronization signal is used to perform a correlation operation with the first synchronization signal received by the terminal device. Exemplarily, the correlation operation may be performed when the terminal device performs a point multiplication operation according to the received first synchronization signal and the corresponding position of the local first synchronization signal to obtain the correlation peak. After that, the terminal device of 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 has been pre-configured in the terminal device, the terminal device of narrowband NR can pass the detected first synchronization signal. The time synchronization is obtained by the time position of a synchronization signal, and the frequency synchronization is obtained by the detected frequency domain position of the first synchronization signal.

Correspondingly, the process for the NB-IoT terminal device to acquire time-frequency synchronization according to the first part of the first synchronization signal may include: in order to detect the first part of the first synchronization signal, the NB-IoT terminal device performs the procedure according to the method of this embodiment. The solution determines the local sequence of the first part of the first synchronization signal, wherein 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. Exemplarily, the correlation operation may be performed by the terminal device according to the first part of the received first synchronization signal and the corresponding position of the local sequence of the first part of the first synchronization signal to perform a point multiplication operation to obtain a correlation peak. After that, the NB-IoT terminal device determines to detect the first part of the first synchronization signal through the correlation peak obtained after the correlation operation, because the signal position of the first part of the first synchronization signal has been pre-configured in the terminal device, the terminal device can pass The time synchronization is obtained by the detected time position of the first part of the first synchronization signal, and the frequency synchronization is obtained by the detected frequency domain position of the first part of the first synchronization signal.

In addition, the terminal device of the narrowband NR can determine the physical cell identity of the cell where it is located by using the first synchronization signal on the first time-frequency resource. Wherein, it can be known from step S101 that the first synchronization signal may be PSS or SSS, and the process of obtaining 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, the first communication system to which the first synchronization signal is applied is narrowband NR, and the second communication system to which the first part of the first synchronization signal is applied is NB-IOT as an example for description.

1. The first synchronization signal is the main synchronization signal PSS.

In a possible implementation manner, since there are 1008 cell IDs of narrowband NR, which are 0, 1, . For narrowband NR, the physical cell identity of the cell where the terminal equipment is located is related to the first parameter and the second parameter, and the physical cell identity of the cell where the terminal equipment is located is related to the first parameter and the second parameter, including:

or,

Among them, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

can be the second parameter, and the

The value of is a natural number not greater than 503.

In a possible implementation of the second parameter, before step S103, the network device sends the SSS to the terminal device on a fourth time-frequency resource, where the fourth time-frequency resource is different from the first time-frequency resource, and the The second parameter is related to the SSS. Correspondingly, before step S103, the terminal device receives the SSS sent 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 the sequence carried on the at least one time-frequency resource and the NSSS The generation method or the acquisition method is the same. Wherein, for a narrowband NR UE, the sequence carried on the at least one time-frequency resource can be determined by way (4). Among them, the way (4) includes:

In the relevant parameters of the way (4), the following relationship is satisfied:

n=0,1,...,131;

n′=n mod 131;

m=n mod 128;

Among them, d(n) is the sequence carried on at least one time-frequency resource on the fourth time-frequency resource, and b _q (m) is the binary scrambling sequence. As shown in Table 2, n′ is 131,

is the cyclic shift sequence of the ZC sequence,

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

related, i.e.

It is indicated jointly by the root factor of the ZC sequence and the binary scrambling sequence. make the terminal device determine the second parameter according to the SSS

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

Optionally, when the frequency domain resource where the sequence with the same generation method or acquisition method as the NPSS is located is located at a relatively low frequency position in the frequency domain resource where the PSS is located, that is, in step S101, the second time-frequency resource is located in the first time-frequency resource. When the relative low frequency position in the time-frequency resource, the value k corresponding to the first parameter is 0; the frequency domain resource that carries the sequence with the same generation method or acquisition method as the NPSS is located, and the relatively high frequency resource located in the frequency domain resource where the PSS is located. , that is, in step S101 , when the second time-frequency resource is at a 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 may be as shown in Figure 6-1 and Figure 6-2. Wherein, that the second time-frequency resource is located at a relatively low frequency in the first time-frequency resource means that the second time-frequency resource is located in a low-frequency RB of the first time-frequency resource, and at this time, the value of k is 0; The fact that the frequency resource is located at a relatively high frequency in the first time-frequency resource means that the second time-frequency resource is located in a 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 can be as shown in Figure 6-3, and the second time-frequency resource is located in the first time-frequency resource. Relatively low frequency means that the second time-frequency resource is located at a low frequency of the first time-frequency resource

in RBs or

Among the RBs, at this time, 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 located in the high frequency of the first time-frequency resource

in RBs or

Among the RBs, the value of k is 1 at this time. in,

means round down,

Indicates rounded up.

Optionally, when the frequency domain resource where the sequence with the same generation method or acquisition method as the NPSS is located is located at a relatively low frequency position in the frequency domain resource where the PSS is located, that is, in step S101, the second time-frequency resource is located in the first time-frequency resource. When the relative low frequency position in the time-frequency resource, the value k corresponding to the first parameter is 1; the frequency domain resource where the sequence that bears the same generation method or acquisition method as the NPSS is located, and the relatively high frequency in the frequency domain resource where the PSS is located. , that is, in step S101 , when the second time-frequency resource is at a 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 may be as shown in Figure 7-1 and Figure 7-2. Wherein, that the second time-frequency resource is located at a relatively low frequency in the first time-frequency resource means: the second time-frequency resource is located in a low-frequency RB of the first time-frequency resource, and at this time, the value of k is 1; The fact that the frequency resource is located at a relatively high frequency in the first time-frequency resource means that the second time-frequency resource is located in a 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 can be as shown in Figure 7-3, and the second time-frequency resource is located in the first time-frequency resource. Relatively low frequency means that the second time-frequency resource is located at a low frequency of the first time-frequency resource

in RBs or

Among the RBs, at this time, the value of k is 1; the relatively high frequency of the second time-frequency resource in the first time-frequency resource means that the second time-frequency resource is located in the high frequency of the first time-frequency resource

in RBs or

Among the RBs, the value of k is 0 at this time. in,

means round down,

Indicates rounded up.

In another possible implementation of the first parameter, the PSS carried on the first time-frequency resource may be obtained by scrambling a third scrambling code, where the third scrambling code may be an orthogonal mask (orthogonal cover code, OCC), it can also be a pre-configured definite pseudo-random sequence, or other scrambling codes, which are not limited here.

Specifically, taking the implementation of the third scrambling code as OCC as an example, generally, in order to avoid parsing errors of the NB-IOT terminal equipment caused by using OCC to process NPSS in the time domain, OCC may be introduced in the frequency domain. Wherein, different OCCs are configured for RBs in different frequency domains on the first time-frequency resource, and the first parameter is determined through the OCC. Taking the first time-frequency resource including 2 RBs as an example, an OCC with a length of 2 is used. When {W0,W1}={1,1}, the value k corresponding to the first parameter is 0; when {W0, W1}={1,1} When 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. Wherein, in {W0,W1}={1,1}, W0 is an all-ones sequence with the same length as the NPSS, and W1 is an all-ones sequence with the same length as the new sequence. In {W0,W1}={1,-1}, W0 is an all-1 sequence with the same length as the NPSS, and W1 is an all-1 sequence with the same length as the new sequence.

or,

Among them, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

is the second parameter, and the

The value of 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 by using the SSS carried by the first time-frequency resource may refer to the aforementioned bearing by the fourth time-frequency resource. The process of determining the second parameter by the SSS of the .

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

Optionally, when the frequency domain resource where the sequence with the same generation method or acquisition method as the NSSS is located is located at a relatively low frequency position in the frequency domain resource where the SSS is located, that is, in step S101, the second time-frequency resource is at the first time. When the relative low frequency position in the frequency resource, the value k corresponding to the first parameter is 0; the frequency domain resource where the sequence that bears the same generation method or acquisition method as the NSSS 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 at a 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 may be as shown in Figure 8-1 and Figure 8-2. Wherein, that the second time-frequency resource is located at a relatively low frequency in the first time-frequency resource means that the second time-frequency resource is located in a low-frequency RB of the first time-frequency resource, and at this time, the value of k is 0; The fact that the frequency resource is located at a relatively high frequency in the first time-frequency resource means that the second time-frequency resource is located in a 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 method shown in Figure 8-3 can be implemented, and the second time-frequency resource is located in the first time-frequency resource. Relatively low frequency means that the second time-frequency resource is located at a low frequency of the first time-frequency resource

in RBs or

Among the RBs, the value of k is 1 at this time. in,

means round down,

Indicates rounded up.

Optionally, when the frequency domain resource where the sequence with the same generation method or acquisition method as the NSSS is located is located at a relatively low frequency position in the frequency domain resource where the SSS is located, that is, in step S101, the second time-frequency resource is located in the first time-frequency resource. When the relative low frequency position in the time-frequency resource, the value k corresponding to the first parameter is 1; the frequency domain resource that carries the sequence with the same generation method or acquisition method as the NSSS is located, and is located in the relatively high frequency domain resource where the SSS is located. , that is, in step S101 , when the second time-frequency resource is at a 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 may be as shown in Figure 9-1 and Figure 9-2. Wherein, that the second time-frequency resource is located at a relatively low frequency in the first time-frequency resource means: the second time-frequency resource is located in a low-frequency RB of the first time-frequency resource, and at this time, the value of k is 1; The fact that the frequency resource is located at a relatively high frequency in the first time-frequency resource means that the second time-frequency resource is located in a 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 can be as shown in Figure 9-3, and the second time-frequency resource is located in the first time-frequency resource. Relatively low frequency means that the second time-frequency resource is located at a low frequency of the first time-frequency resource

in RBs or

Among the RBs, the value of k is 0 at this time. in,

means round down,

Indicates rounded up.

In another possible implementation of the first parameter, the SSS carried on the first time-frequency resource may be obtained by scrambling a third scrambling code, where the third scrambling code may be an orthogonal mask (orthogonal cover code, OCC), it can also be a pre-configured definite pseudo-random sequence, or other scrambling codes, which are not limited here.

Specifically, taking the implementation of the third scrambling code as OCC as an example, generally, in order to avoid parsing errors of the NB-IOT terminal equipment caused by using OCC to process NPSS in the time domain, OCC may be introduced in the frequency domain. Wherein, different OCCs are configured for RBs in different frequency domains on the first time-frequency resource, and the first parameter is determined through the OCC. As shown in Figure 10, when {W0,W1}={1,1}, the value k corresponding to the first parameter is 0; when {W0,W1}={1,-1}, the first parameter corresponds to The value of k 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 them, in {W0,W1}={1,1}, W0 is an all-ones sequence with the same length as NSSS, and W1 is an all-ones sequence with the same length as the new sequence. In {W0,W1}={1,-1}, W0 is an all-1 sequence with the same length as the NSSS, and W1 is an all-1 sequence with the same length as the new sequence.

In this embodiment, among the first synchronization signals 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, and the first synchronization signal is carried on the second time-frequency resource. The first part of the first synchronization signal 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 network device respectively sending 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 terminals corresponding to different communication systems When the device is connected to the network, the network resource and device energy consumption overhead caused by the network device sending different synchronization signals on different time-frequency resources can be reduced, and the communication efficiency can be improved.

FIG. 11 is another schematic diagram of a communication method in an embodiment of the present application. As shown in FIG. 11 , the communication method includes the following steps.

S201. The network device determines first system information.

In this embodiment, the network device determines the first system message, the first system message is carried on the first time-frequency resource, the first part of the first system message is carried on the second time-frequency resource, and the second time-frequency resource is the Part of the time-frequency resources in the first time-frequency resources. Wherein, the first system message is used for the first communication system, the first part of the first system message is used for the 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, wherein the second part of the first system message is carried in the third time-frequency resource, and the third time-frequency resource is The three time-frequency resources are different from the second time-frequency resources.

Wherein, the message of the first part of the first system message and the message of the second part of the first system message may be the same. Specifically, 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 message of the first part of the first system message is the same as the first part of the first system message. The messages of the second part of a system message are identical, so that there are at least two identical parts in the first system message that carry the same message.

12 is a schematic diagram of a radio frame in which the first system message is a master information block MIB carried on the physical broadcast channel PBCH, wherein the first time-frequency resource is used to carry the first system message, and the first system message includes at least the first part and the second part. In Figure 12, the NPBCH occupies multiple consecutive RBs in the frequency domain, and each RB can be regarded as a different part of the first system message, that is, the "shaded block NPBCH" in Figure 12 is the first part of the first synchronization signal, and the "blank block" Block NPBCH" is the second part of the first synchronization signal. In the solution 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, and the content or data carried on the second time-frequency resource is the same as the MIB carried by the NPBCH. The 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, and in this subframe, 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 first The second part of the synchronization signal can be directly copied from the second part of the first synchronization signal.

Furthermore, the messages of the first part of the first system message may be different from the messages of the second part of the first system message. Specifically, 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 message of the first part of the first system message is the same as the first part of the first system message. The messages of the second part of a system message are different, so that there are at least two parts in the first system message that carry different messages. Compared with the way of carrying the same message in different parts of the first system message, it can make the message of the second part of the first system message more likely to change, not only limited to the first system message. Part of the message is the same.

In a possible implementation manner, in step S201, since the first system message determined by the network device is carried on the first time-frequency resource, the first part of the first system message is carried on the second time-frequency resource, the second The time-frequency resources are part of the time-frequency resources in the first time-frequency resources. 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 NR, narrowband NR or other communication systems, and the second communication system may be NB-IOT, eMTC or other communication systems.

Exemplarily, the first communication system to which the first system message is applied is narrowband NR, and the second communication system to which the first part of the first system message is applied is NB-IOT as an example for description. At this time, the first system message may be the master information block MIB carried on the physical broadcast channel PBCH. Wherein, the second time-frequency resource includes subframe No. 0 in the radio frame, the generation method or acquisition method of the content or data carried on the second time-frequency resource, and the generation method or acquisition method of the content or data carried on the NPBCH same. Specifically, the second time-frequency resource includes the last 11 OFDM symbols of the 14 OFDM symbols in the No. 0 subframe. The System Frame Number (SFN) is the number of the radio frame or system frame. The specific range of the number of the system frame is 0, 1, 2, ..., 1023, as shown in Figure 2-2. Wherein, each radio frame or system frame includes 10 subframes, and the number of specific subframes ranges from 0, 1, 2, . . . , 9. For the NR system, one time slot (slot) includes 14 OFDM symbols. When the subcarrier spacing is 15 kilohertz (kHz), the length of one time slot is 1 ms. At this time, the subframe length is equal to the time The slot length is equal to 1 ms. Therefore, when the subcarrier spacing is 15 kHz, the subframes and time slots in this embodiment can be equivalently replaced. Taking the frame structure of a radio frame including 10 subframes and the subframes numbered from 0 to 9 as an example (as shown in Figure 2-1), the second time-frequency resource carrying the NPBCH may specifically include subframe 0 Or a time slot; taking the frame structure of a radio frame including 10 subframes and the subframes numbered from 1 to 10 as an example, the second time-frequency resource that carries the NPBCH may specifically include the No. 1 subframe or time slot; in addition, , which is used to carry the second time-frequency resource of the NPBCH. In scenarios where different radio frame structures are implemented, the subframe number of the second time-frequency resource may also be other values, which are not limited here.

In a possible implementation manner, the frequency domain resources in the first time-frequency resource 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. Controlling that the first time-frequency resource is 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 NB-IOT NPSS, NSSS, and NPBCH transmission. For details, please refer to the contents of the foregoing Tables 3 and 4. For the definitions of the parameters in Tables 3 and 4, reference may be made to the parameter definitions in the implementation process in the foregoing step S101, which will not be repeated here.

In addition, as shown in Table 4, only some of the frequency bands supported by NR are taken as an example, in which NB-IoT supports some of the frequency bands, that is, the frequency band corresponding to "Y" in the third column in Table 4. In this embodiment, corresponding to some frequency bands supported by NB-IoT, system messages can be sent and received according to the implementation methods of the embodiments shown in FIG. 11 to FIG. 12 , that is, the value of the fourth column in Table 4 is in the frequency band corresponding to “Y” System messages are sent and received according to the implementation manners of the embodiments shown in FIG. 11 to FIG. 12 . Corresponding to some frequency bands supported by NB-IoT, system messages can be sent and received according to implementations different from the embodiments shown in FIGS. 11 to 12 . The new system message design scheme sends and receives system messages. Corresponding to the frequency band not supported by NB-IoT, that is, the frequency band corresponding to the value of "N" in the third column of Table 4, the system message can be sent and received according to the implementation mode different from the embodiment shown in Figure 11 to Figure 12, that is, according to a A new system message design scheme to send system messages.

S202. The network device sends a first signal bearing the first system message to the terminal device on the first time-frequency resource.

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

S203. The terminal device 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.

The network device may process the first system message according to preset scrambling and other methods to obtain the first signal, and then send the first signal to the terminal device in step S202. Correspondingly, after receiving the first signal in step S202, the terminal device obtains the first system message by means of configuration or pre-configured descrambling, etc., so as to perform step S203 according to the first system message. Specifically, configuration means that the base station or server sends configuration information or parameter values of some parameters to the terminal through messages or signaling, so that the terminal can determine communication parameters or resources during transmission according to these values or information. Pre-configuration is similar to configuration. It can be the way that the base station or server sends parameter information or values to the terminal through another link or carrier different from the sideline; it can also be to define the corresponding parameters or parameter values, or By writing the relevant parameters or values to the terminal device in advance. This application does not limit this.

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

Specifically, the process of obtaining the system message in the narrowband NR communication system by the narrowband NR terminal device according to the first system message may include that the time-frequency resource location of the first signal carrying the first system message has been preconfigured in the terminal device, The terminal device of the narrowband NR can receive the first signal at the preconfigured time-frequency resource position, and perform operations such as descrambling, demodulating, and decoding on the first signal, and finally obtain the first system message.

Correspondingly, the process of acquiring the system message in the NB-IoT system by the NB-IoT terminal device according to the first part of the first system message may include: the time-frequency resource location of the part of the first signal bearing the first part of the first system message. It has been pre-configured on the terminal device, and the NB-IoT terminal device can receive part of the first signal at the pre-configured time-frequency resource position, and perform operations such as descrambling, demodulating, and decoding on part of the first signal, and finally obtain The first part of the first system message.

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

or,

in,

is the physical cell identifier of the cell where the terminal device is located, mod represents the remainder operation,

Indicates rounding down, and the / indicates division.

or,

Among them, c _init is the initialization seed of the target scrambling code,

mod504 with

is the first parameter, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

or,

Among them, c _init is the initialization seed of the target scrambling code,

mod504 with the

is the first parameter, n _f is the wireless frame number, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

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

Specifically, NPBCH can use the cell ID of NB-IoT

Initialize the scrambling seeds of the bit-level scrambling code and the symbol-level scrambling code. If the terminal device of narrowband NR can correctly parse the first system message on the first time-frequency resource to obtain the PBCH, the initialization seed of the PBCH scrambling code needs to be the same as that of the NPBCH. The initialization seed of the scrambling code is the same.

Exemplarily, when the narrowband NR communication system and the NB-IoT communication system share a network device, that is, when the terminal device of the narrowband NR communication system and the terminal device of the NB-IoT communication system communicate through the same network device, the network device can The first system message is sent on the first time-frequency resource by using the solution of this embodiment. The first part of the first system message is carried on second time-frequency resources, and the second time-frequency resources are part of the first time-frequency resources. Wherein, the first system message is used in the narrowband NR communication system, and the first part of the first system message is used in the NB-IoT communication system. At this time, the terminal device of the narrowband NR obtains the PBCH through the first system message, and the terminal device of the NB-IoT obtains the NPBCH through the first part of the first system message. Because NPBCH is a part of the message in PBCH, in order to enable narrowband NR terminal equipment to correctly decode PBCH, and in order to enable NB-IoT terminal equipment to correctly decode NPBCH, the initialization seed of PBCH scrambling code needs to be the same as that of NPBCH scrambling code. The initialization seed is the same. 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 way (5) includes:

or,

In mode (5),

is the cell ID of NB-IoT,

is the cell ID of the narrowband NR, mod represents the remainder operation,

Indicates rounding down, and / indicates division.

By means (5), it can be ensured that the scrambling code of the PBCH and the scrambling code of the NPBCH are the same. At this time, for the terminal equipment of NB-IoT, the initialization seed of the scrambling code of NPBCH is used

For narrowband NR terminal equipment, the initialization seed of the PBCH scrambling code is used

504 or

details as follows:

For NB-IoT terminal equipment, the initialization seed used by bit-level scrambling code is:

The initialization seed used for symbol-level scrambling is:

For narrowband NR terminal equipment, the initialization seed used for bit-level scrambling is:

or,

The initialization seed used for symbol-level scrambling is:

or,

In the above formulas,

is the cell ID of NB-IoT,

is the cell ID of the narrowband NR, mod represents the remainder operation,

means round down, / means division operation, n _f is the wireless frame number.

In this embodiment, among the first system messages sent by the network device on the first time-frequency resource, the first system message carried on the first time-frequency resource is used for the first communication system, and the first system message carried on the second time-frequency resource is used for the first communication system. The first part of the first system message 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 system messages through the first time-frequency resource. In addition, compared with the network device sending 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 terminals corresponding to different communication systems When the device is connected to the network, the network resource and device energy consumption overhead caused by the network device sending different system messages on different time-frequency resources can be reduced, and the communication efficiency can be improved.

The embodiments of the present application are described above from the perspective of methods, and the following describes the communication devices in the embodiments of the present application from the perspective of specific device implementation.

Referring to FIG. 13 , an embodiment of the present application provides a schematic diagram of a communication apparatus 1300 , where the communication apparatus 1300 at least includes a processing unit 1301 and a transceiver unit 1302 .

In a possible implementation manner, the communication apparatus 1300 includes:

The processing unit 1301 is configured to determine a first synchronization signal, the first synchronization signal is carried on a first time-frequency resource, a first part of the first synchronization signal is carried on a second time-frequency resource, and the second time-frequency resource is the Part of the time-frequency resources in the first time-frequency resources, wherein the first synchronization signal is used for the first communication system, the first part of the first synchronization signal is used for the second communication system, the first communication system and the second communication system The communication system is a different communication system;

The transceiver unit 1302 is configured to send 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 on a third time-frequency resource, the third time-frequency resource is a part of the first time-frequency resource, and the third time-frequency resource is a part of the first time-frequency resource. The frequency resource is different from the second time-frequency resource, wherein the sequence of the first part of the first synchronization signal is the same as the sequence of the second part of the first synchronization signal.

In a possible implementation manner, the first synchronization signal is the main synchronization signal PSS, and the first part of the first synchronization signal is obtained from the first sequence and the first scrambling code.

In a possible implementation manner, 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, the second time-frequency resource includes the No. 5 subframe in the 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 No. 5 subframe.

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

In a possible implementation manner, 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, the second time-frequency resource includes the 9th subframe in the even-numbered radio frame.

In a possible implementation manner, the second time-frequency resource includes the last 11 OFDM symbols in the 14 OFDM symbols in the No. 9 subframe.

In a possible implementation manner, the physical cell identifier of the cell where the terminal device is located is related to a first parameter, and the first parameter is related to the 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, 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, and the second parameter is related to the first sequence and the first scrambling code related.

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

In a possible implementation manner, the physical cell identifier of the cell where the terminal device is located is related to the first parameter, including:

or,

Among them, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

The value of is a natural number not greater than 503.

Optionally, the

Can be the second parameter.

It should be noted that, for details such as the information execution process of the units of the communication device 1300, reference may be made to the descriptions in the method embodiments shown in the foregoing application, which will not be repeated here.

In another possible implementation manner, the communication apparatus 1300 includes:

The transceiver unit 1302 is configured to receive, on the first time-frequency resource, a first synchronization signal sent from a network device, the first synchronization signal is carried on the first time-frequency resource, and the first part of the first synchronization signal is carried on the first time-frequency resource. Two time-frequency resources, the second time-frequency resources are part of the first time-frequency resources, wherein the first synchronization signal is used for the first communication system, and the first part of the first synchronization signal is used for the first synchronization signal. Two communication systems, the first communication system and the second communication system are different communication systems;

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

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

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

The SSS from the network device is received on a fourth time-frequency resource, the fourth time-frequency resource is different from the first time-frequency resource, and the second parameter is related to the SSS.

or,

Among them, the

is the first parameter, and the

The value is 0 or 1, the * represents the multiplication operation, the

The value of is a natural number not greater than 503.

Optionally, the

Can be the second parameter.

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

The transceiver unit 1302 is configured to send the first system message on the first time-frequency resource.

or,

Among them, the

Indicates rounding down, and the / indicates division.

or,

mod504 with the

is the first parameter, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

or,

mod504 with the

Indicates rounding down, and the / indicates division.

The transceiver unit 1302 is configured to receive a first signal including a first system message from a network device on a first time-frequency resource, where the first system message is carried on the first time-frequency resource, and the first system message is The first part is carried on the second time-frequency resource, and the second time-frequency resource is a part of the time-frequency resource in the first time-frequency resource, wherein the first system message is used for the first communication system, and the first system message is used in the first communication system. The first part is used for 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 acquire a system message according to the first signal.

or,

Among them, the

Indicates rounding down, and the / indicates division.

or,

mod504 with the

is the first parameter, the mod represents the remainder operation, the

Indicates rounding down, and the / indicates division.

or,

mod504 with the

Indicates rounding down, and the / indicates division.

Please refer to FIG. 14 , which is a schematic structural diagram of the communication device involved in the above-mentioned embodiment provided for the embodiment of the present application, wherein the communication device may specifically be the network device in the foregoing embodiment, and the structure of the communication device may refer to FIG. 14 shows the structure.

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, through a bus. In this embodiment of the present application, the connection may include various interfaces, transmission lines, or buses, which are not limited in this embodiment. . The antenna 1415 is connected to the transceiver 1413 . The network interface 1414 is used to connect the communication device with other communication devices through a communication link. For example, the network interface 1414 may include a network interface between the communication device and the core network device, such as the S1 interface, and the network interface may include the communication device and other networks. A network interface between devices (such as other access network devices or core network devices), such as an X2 or Xn interface.

The processor 1411 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs, for example, to support the communication device to perform the actions described in the embodiments. The communication device may include a baseband processor and a central processing unit. The baseband processor is mainly used to process communication protocols and communication data. The central processing unit is mainly used to control the entire network equipment, execute software programs, and process data of software programs. . The processor 1411 in FIG. 14 may integrate the functions of a baseband processor and a central processing unit. Those skilled in the art can understand that the baseband processor and the central processing unit may also be independent processors, interconnected by technologies such as a bus. Those skilled in the art can understand that a network device may include multiple baseband processors to adapt to different network standards, a network device may include multiple central processors to enhance its processing capability, and various components of the network device may be connected through various buses. The baseband processor may 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 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 mainly used to store software programs and data. The memory 1412 may exist independently and be connected to the processor 1411 . Optionally, the memory 1412 can be integrated with the processor 1411, for example, in one chip. The memory 1412 can store program codes for implementing the technical solutions of the embodiments of the present application, and is controlled and executed by the processor 1411 .

Figure 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 or the like. The memory may be a storage element on the same chip as the processor, that is, an on-chip storage element, or an independent storage element, which is not limited in this embodiment of the present application.

The 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 connected to the antenna 1415 . The transceiver 1413 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 1415 can receive radio frequency signals, and the 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 convert the digital The baseband signal or digital intermediate frequency signal is provided to the processor 1411, so that the processor 1411 performs further processing on the digital baseband signal or digital intermediate frequency signal, such as demodulation processing and decoding processing. In addition, the transmitter Tx in the transceiver 1413 is also used to receive the modulated digital baseband signal or digital intermediate frequency signal from the processor 1411, and convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and pass a The radio frequency signals are transmitted by the antenna or antennas 1415. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of precedence is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a radio frequency signal, and the up-mixing processing and digital-to-analog conversion processing The sequence of s is adjustable. Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals.

A transceiver may also be referred to as a transceiver unit, a transceiver, a transceiver, or the like. Optionally, the device used to implement the receiving function in the transceiver unit may be regarded as a receiving unit, and the device used to implement the transmitting function in the transceiver unit may be regarded as a transmitting unit, that is, the transceiver unit includes a receiving unit and a transmitting unit, and the receiving unit also It can be called a receiver, an input port, a receiving circuit, etc., and the sending unit can be called a transmitter, a transmitter, or a transmitting circuit, etc.

It should be noted that the communication apparatus shown in FIG. 14 can be specifically used to implement the steps implemented by the network equipment in the method embodiments corresponding to FIG. 5 to FIG. 12 , and realize the technical effects corresponding to the network equipment. For the implementation manner, reference may be made to the descriptions in the respective method embodiments corresponding to FIG. 5 to FIG. 12 , which will not be repeated here.

Please refer to FIG. 15 , which is a schematic diagram of a possible logical structure of the communication apparatus 1500 involved in the above embodiments provided by the embodiments of this application. The communication apparatus may specifically be the terminal equipment in the foregoing embodiments. The communication apparatus 1500 It may include, but is not limited to, a processor 1501 , a communication port 1502 , a memory 1503 , and a bus 1504 . In this embodiment of the present application, the processor 1501 is used to control and process the actions of the communication device 1500 .

Furthermore, 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 device, hardware component, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that implements computing functions, such as a combination comprising one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above may refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

It should be noted that the communication apparatus shown in FIG. 15 can be specifically used to implement the steps implemented by the terminal equipment in the method embodiments corresponding to FIG. 5 to FIG. 12 , and realize the technical effects corresponding to the terminal equipment. For the implementation manner, reference may be made to the descriptions in the respective method embodiments corresponding to FIG. 5 to FIG. 12 , which will not be repeated here.

Embodiments of the present application further provide a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the possible implementations of the communication device in the foregoing embodiments. method, wherein the communication device may specifically be the network device in the foregoing embodiment.

Embodiments of the present application further provide a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes the possible implementations of the communication device in the foregoing embodiments. method, wherein the communication device may specifically be the terminal device in the foregoing embodiment.

Embodiments of the present application also provide a computer program product (or computer program) that stores one or more computers. When the computer program product is executed by the processor, the processor executes the method for possible implementations of the above communication device, wherein , the communication apparatus may specifically be the network device in the foregoing embodiment.

Embodiments of the present application further provide a computer program product that stores one or more computers. When the computer program product is executed by the processor, the processor executes the method for possible implementations of the above communication device, wherein the communication device may specifically be is the terminal device in the foregoing embodiment.

An embodiment of the present application further provides a chip system, where the chip system includes a processor, which is configured to support the communication apparatus to implement the functions involved in the possible implementation manners of the foregoing communication apparatus. In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the communication device. The chip system may be constituted by a chip, or may include a chip and other discrete devices, wherein 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, which is configured to support the communication apparatus to implement the functions involved in the possible implementation manners of the foregoing communication apparatus. In a possible design, the chip system may further include a memory for storing necessary program instructions and data of the communication device. The chip system may be composed of chips, or may include chips and other discrete devices, wherein the communication device may specifically be the terminal equipment in the foregoing embodiments.

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

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

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

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

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

Claims

A communication method, comprising:

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

The first synchronization signal is sent on the first time-frequency resource.
A communication method, comprising:

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

Time-frequency synchronization is acquired according to the first synchronization signal.
A communication device, comprising a processing unit and a transceiver unit;

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

The transceiver unit is configured to send the first synchronization signal on the first time-frequency resource.
A communication device, comprising a processing unit and a transceiver unit;

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

The processing unit is configured to acquire time-frequency synchronization according to the first synchronization signal.
The method or apparatus according to any one of claims 1 to 4, wherein the second part of the first synchronization signal is carried on a third time-frequency resource, and the third time-frequency resource is the first Part of the time-frequency resources in the time-frequency resources, 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 is the same as the second time-frequency resource of the first synchronization signal. Part of the sequence is the same.
The method or apparatus according to any one of claims 1 to 5, wherein the first synchronization signal is a main synchronization signal PSS, and the first part of the first synchronization signal is composed of a first sequence and a first scrambling code get.
The method or apparatus according to 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, 1}.
The method or apparatus according to claim 6 or 7, wherein the second time-frequency resource comprises a No. 5 subframe in a radio frame.
The method or apparatus according to claim 8, wherein the second time-frequency resource comprises the last 11 OFDM symbols of the 14 OFDM symbols in the No. 5 subframe.
The method or apparatus according to any one of claims 1 to 5, wherein the first synchronization signal is a secondary synchronization signal SSS, and the first part of the first synchronization signal is composed of a second sequence and a second scrambling code get.
The method or apparatus according to claim 10, wherein the second sequence is a ZC sequence, and the second scrambling code is a binary scrambling code with a length of 128.
The method or apparatus according to claim 10 or 11, wherein the second time-frequency resource comprises subframe No. 9 in an even-numbered radio frame.
The method or apparatus according to claim 12, wherein the second time-frequency resource comprises the last 11 OFDM symbols of the 14 OFDM symbols in the No. 9 subframe.
The method or apparatus according to any one of claims 1 to 13, wherein the physical cell identifier of the cell where the terminal device is located is related to a first parameter, and the first parameter and the second time-frequency resource are in the The relative position in the first time-frequency resource is related, 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.
The method or apparatus according to claim 14, wherein the physical cell identifier of the cell where the terminal device is located is related to the first parameter, comprising:

or,

Among them, the
is the physical cell identifier of the cell where the terminal equipment is located, and the
is the first parameter, and the
The value is 0 or 1, the * indicates a multiplication operation, the
The value of is a natural number not greater than 503.
The method or apparatus according to any one of claims 1 to 15, wherein the frequency domain resources in the first time-frequency resource 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.
A communication method, comprising:

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

The first system message is sent on the first time-frequency resource.
A communication method, comprising:

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

The system message is acquired according to the first signal.
A communication device, comprising a processing unit and a transceiver unit;

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

The transceiver unit is configured to send the first system message on the first time-frequency resource.
A communication device, comprising a processing unit and a transceiver unit;

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

The processing unit is configured to acquire a system message according to the first signal.
The method or apparatus according to any one of claims 17 to 20, wherein the second part of the first system message is carried in a third time-frequency resource, and the third time-frequency resource is the first Part of the time-frequency resources in the time-frequency resources, 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.
The method or device according to any one 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 an initialization seed of the target scrambling code is the same as the The first parameter is related to the physical cell identifier of the cell where the terminal device is located.
The method or apparatus according to claim 22, wherein the first system message is a master information block MIB carried on a physical broadcast channel PBCH, and the first parameter comprises:

or,

Among them, the
is the physical cell identifier of the cell where the terminal equipment is located, the mod represents the remainder operation, the
Indicates rounding down, and the / indicates a division operation.
The method or apparatus according to claim 23, wherein the first parameter is related to the physical cell identity of the cell where the terminal equipment is located, comprising:

or,

Wherein, the c init is the initialization seed of the target scrambling code, the
with the stated
is the first parameter.
The method or apparatus according to claim 23 or 24, wherein the first parameter is related to the physical cell identity of the cell where the terminal equipment is located, comprising:

or,

Wherein, the c init is the initialization seed of the target scrambling code, the
with the stated
is the first parameter, and the n f is the radio frame number.
The method or apparatus according to any one of claims 17 to 25, wherein the second time-frequency resource comprises subframe 0 in a radio frame.
The method or apparatus according to claim 26, wherein the second time-frequency resource comprises the last 11 OFDM symbols of the 14 OFDM symbols in the No. 0 subframe.
The method or apparatus according to any one of claims 17 to 27, wherein the frequency domain resources in the first time-frequency resource 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.
A communication device, characterized by comprising at least one processor and an interface circuit, wherein

the interface circuit for providing programs or instructions for the at least one processor;

The at least one processor is configured to execute the program or instruction, so that the communication device implements the method of any one of claims 1 to 2, or, causes the communication device to implement the method described in any one of claims 5 to 16. method described.
A computer-readable storage medium having instructions stored thereon, when the instructions are executed by a computer, the method of any one of claims 1 to 2 is implemented, or, when the instructions are executed by a computer, the rights are implemented The method of any one of claims 5 to 16.