CN117998377A

CN117998377A - Signal transmission method, signal transmission device, related equipment and storage medium

Info

Publication number: CN117998377A
Application number: CN202211351160.1A
Authority: CN
Inventors: 顾琪; 吴丹; 苏鑫
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2024-05-07
Also published as: WO2024093889A1

Abstract

The application discloses a signal transmission method, a signal transmission device, first network equipment, a terminal, second network equipment and a storage medium. The method comprises the following steps: the method comprises the steps that first network equipment sends a first signal set and a second signal set, frequency domain resource sets corresponding to the first signal set and the second signal set are different, time domain resource sets corresponding to the second signal set are subsets or whole sets of time domain resource sets corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first set of signals includes at least one first signal and the second set of signals includes at least one second signal; the first signal comprises at least a first identification, and the second signal is capable of indicating at least the first identification of the corresponding first signal.

Description

Signal transmission method, signal transmission device, related equipment and storage medium

Technical Field

The present application relates to the field of wireless communications, and in particular, to a signal transmission method, apparatus, related device, and storage medium.

Background

In the related art, a wireless network may introduce some network devices capable of forwarding signals by reflection to assist blind area user communication, for example, if there is a shielding between a base station and a user, as shown in fig. 1, a signal sent by the base station may be reflected to the blind area user through a reconfigurable intelligent surface (RIS, reconfigurable Intelligent Surface), so as to implement blind area coverage. The RIS can also be called an intelligent reflecting surface or an intelligent super surface, is a novel intelligent passive surface, and can utilize a metamaterial to regulate electromagnetic parameters of reflected electromagnetic waves, such as phase, frequency, amplitude and the like, so as to realize the reflection angle control of incident waves and form reflection beams in different directions. The RIS can realize the signal forwarding without a complex Radio Frequency (RF) circuit, and has the characteristics of low cost, low power consumption and easy deployment. The RIS is usually controlled by a control module (English may be expressed as a Controller), the base station may adjust the phase of the RIS according to the channel state information, the corresponding adjustment instruction may be completed through a wireless control link between the base station and the RIS control module, that is, the RIS control module may complete operations such as receiving, decoding, executing, etc. the control information of the base station, and the RIS control module may report the basic configuration of the RIS to the base station.

However, after the wireless network introduces a network device capable of forwarding signals by reflection, the related art has not yet had an effective solution for how to reasonably configure signal transmission resources.

Disclosure of Invention

In order to solve the related technical problems, the embodiment of the application provides a signal transmission method, a signal transmission device, related equipment and a storage medium.

The technical scheme of the embodiment of the application is realized as follows:

The embodiment of the application provides a signal transmission method, which is applied to first network equipment and comprises the following steps:

Transmitting a first signal set and a second signal set, wherein frequency domain resource sets corresponding to the first signal set and the second signal set are different, time domain resource sets corresponding to the second signal set are subsets or whole sets of time domain resource sets corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

The first set of signals includes at least one first signal and the second set of signals includes at least one second signal; the first signal comprises at least a first identification, and the second signal is capable of indicating at least the first identification of the corresponding first signal.

In the above scheme, the second signal indicates the first identification of the corresponding first signal by one of the following ways:

The second signal indicates the first identification of the corresponding first signal in an implicit mode;

the second signal contains a first identification of the corresponding first signal.

In the above solution, the indicating, by an implicit manner, the first identifier of the corresponding first signal by the second signal includes:

the second signal is scrambled with a first identification of the corresponding first signal.

In the above scheme, the second signal includes a first identifier of the corresponding first signal, including:

the Physical Broadcast Channel (PBCH) of the second signal contains a first identification of the corresponding first signal.

In the above solution, the second signal set includes at least one group of second signals, where each group of second signals includes at least one second signal with the same frequency domain resource; the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or whole sets of the time domain resource sets corresponding to the first signal sets.

In the above scheme, the method further comprises:

first information and second information of a second network device are acquired, the first information indicating at least one first signal in the first set of signals, the second information indicating a number of reflected beams of the second network device.

In the above scheme, the method further comprises:

the second set of signals is configured for the second network device based on first and second information of the second network device, the first and second information being associated with at least a number of second signals in the second set of signals.

In the above aspect, the second signal set includes at least one group of second signals; the configuring the second signal set for the second network device based on the first information and the second information of the second network device includes:

determining the group number corresponding to a second signal in the second signal set based on the first information;

And determining the number of second signals in each group of second signals based on the second information, wherein the number of second signals in each group of second signals is smaller than or equal to the number of first signals contained in the first signal set.

For each of the at least one second network device, configuring at least one set of second signals based on at least one first signal associated with first information of the second network device, each set of second signals comprising at least one second signal having the same frequency domain resources, the number of second signals of each set being less than or equal to the number of reflected beams of the second network device; the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or whole sets of the time domain resource sets corresponding to the first signal sets.

In the above solution, the acquiring the first information and the second information of the second network device includes:

And receiving the first information and the second information sent by the second network equipment.

In the above scheme, the second network device includes an RIS and an RIS control module.

In the above scheme, the signals in the first signal set and the second signal set include at least one of the following:

A synchronization signal;

Broadcasting channel signals.

The embodiment of the application also provides a signal transmission method which is applied to the terminal and comprises the following steps:

Receiving a first signal set or a second signal set sent by a network side, wherein frequency domain resources corresponding to the first signal set and the second signal set are different, a time domain resource set corresponding to the second signal set is a subset or a whole set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

The PBCH of the second signal contains a first identification of the corresponding first signal.

A synchronization signal;

Broadcasting channel signals.

The embodiment of the application also provides a signal transmission method which is applied to the second network equipment and comprises the following steps:

Transmitting first information and second information to a first network device, where the first information and the second information are used to configure a second signal set for the second network device, where the second signal set is different from a frequency domain resource set corresponding to a first signal set, a time domain resource set corresponding to the second signal set is a subset or a whole set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first information indicates at least one first signal of the first set of signals, and the second information indicates a number of reflected beams of the second network device; the first information and second information are associated with at least a number of second signals in the second set of signals; wherein,

In the above scheme, the first information is used for determining the number of groups corresponding to the second signals in the second signal set, and the second information is used for determining the number of the second signals in each group of second signals, where the number of the second signals in each group is smaller than or equal to the number of the first signals contained in the first signal set.

A synchronization signal;

Broadcasting channel signals.

The embodiment of the application also provides a signal transmission device, which is arranged on the first network device and comprises:

A first sending unit, configured to send a first signal set and a second signal set, where frequency domain resource sets corresponding to the first signal set and the second signal set are different, and a time domain resource set corresponding to the second signal set is a subset or a complete set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

The embodiment of the application also provides a signal transmission device, which is arranged on the terminal and comprises:

A receiving unit, configured to receive a first signal set or a second signal set sent by a network side, where frequency domain resources corresponding to the first signal set and the second signal set are different, and a time domain resource set corresponding to the second signal set is a subset or a complete set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

The embodiment of the application also provides a signal transmission device, which is arranged on the second network equipment and comprises:

A second sending unit, configured to send first information and second information to a first network device, where the first information and the second information are used to configure a second signal set for the second network device, where the second signal set is different from a frequency domain resource set corresponding to the first signal set, a time domain resource set corresponding to the second signal set is a subset or a whole set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first information indicates at least one first signal of the first set of signals, and the second information indicates a number of reflected beams of the second network device; the first information and second information are associated with at least a number of second signals in the second set of signals; wherein,

The embodiment of the application also provides first network equipment, which comprises: a first communication interface and a first processor; wherein,

The first communication interface is configured to send a first signal set and a second signal set, where frequency domain resource sets corresponding to the first signal set and the second signal set are different, and time domain resource sets corresponding to the second signal set are subsets or whole sets of time domain resource sets corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

The embodiment of the application also provides a terminal, which comprises: a second communication interface and a second processor; wherein,

The second communication interface is configured to receive a first signal set or a second signal set sent by a network side, where frequency domain resources corresponding to the first signal set and the second signal set are different, and a time domain resource set corresponding to the second signal set is a subset or a complete set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

The embodiment of the application also provides second network equipment, which comprises: a third communication interface and a third processor; wherein,

The third communication interface is configured to send first information and second information to a first network device, where the first information and the second information are used to configure a second signal set for the second network device, the second signal set is different from a frequency domain resource set corresponding to the first signal set, a time domain resource set corresponding to the second signal set is a subset or a whole set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first information indicates at least one first signal of the first set of signals, and the second information indicates a number of reflected beams of the second network device; the first information and second information are associated with at least a number of second signals in the second set of signals; wherein,

The embodiment of the application also provides first network equipment, which comprises: a first processor and a first memory for storing a computer program capable of running on the processor,

The first processor is configured to execute any one of the steps of the method on the first network device side when running the computer program.

The embodiment of the application also provides a terminal, which comprises: a second processor and a second memory for storing a computer program capable of running on the processor,

And the second processor is used for executing any method step on the terminal side when the computer program is run.

The embodiment of the application also provides second network equipment, which comprises: a third processor and a third memory for storing a computer program capable of running on the processor,

And the third processor is used for executing any step of the method at the second network equipment side when the computer program is run.

The embodiment of the application also provides a storage medium, on which a computer program is stored, the computer program when executed by a processor realizes the steps of any method at the first network device side, or realizes the steps of any method at the terminal side, or realizes the steps of any method at the second network device side.

The signal transmission method, the signal transmission device, the related equipment and the storage medium provided by the embodiment of the application, a first network equipment sends a first signal set and a second signal set, frequency domain resource sets corresponding to the first signal set and the second signal set are different, time domain resource sets corresponding to the second signal set are subsets or whole sets of time domain resource sets corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first set of signals includes at least one first signal and the second set of signals includes at least one second signal; the first signal at least comprises a first identifier, and the second signal at least can indicate the first identifier of the corresponding first signal; and the terminal receives the first signal set or the second signal set sent by the first network equipment. According to the scheme provided by the embodiment of the application, a first network device (such as a base station) configures and transmits two sets of signal sets with frequency domain offset: the first signal set and the second signal set correspond to the same cell identifier and different frequency domain resource sets, and the time domain resource set corresponding to the second signal set is a subset or the whole set of the time domain resource set corresponding to the first signal set, so that the user reading time (namely, the system time sequence determined by the terminal for the received signal) corresponding to the first signal set and the second signal set is consistent, and therefore, the beam scanning of the first network device and the second network device can be simultaneously realized under the condition that the wireless network introduces the second network device (such as the network device containing RIS) capable of forwarding the signal in a reflection mode to assist the blind area user communication, namely, by configuring the second signal set for the second network device, the blind area coverage can be ensured by utilizing the second signal set while the base coverage (namely, the non-blind area coverage) of the signal guarantee cell in the first signal set, and the signal transmission resource for the base coverage of the cell can be reasonably distributed, in other words, the time delay of the base coverage of the cell can be ensured, and the base coverage of the cell can be ensured.

Drawings

FIG. 1 is a diagram of a related art RIS transmission model;

Fig. 2 is a schematic diagram of a base station periodically sending a synchronization signal burst set (english may be expressed as SS burst set) in the related art;

FIG. 3 is a diagram of the synchronization signal block (SSB, synchronization Signal Block) locations that can be used for RIS reflected beam scanning in the related art;

FIG. 4 is a flow chart of a signal transmission method according to an embodiment of the application;

FIG. 5 is a diagram of a blind zone user synchronization process implemented by an application example RIS auxiliary cell of the present application;

FIG. 6 is a schematic diagram of the application of the present application illustrating the configuration of a primary SSB and a secondary SSB;

FIG. 7 is a schematic flow chart of an example application of the present application using index scrambling of a primary SSB to a secondary SSB;

FIG. 8 is a schematic diagram of a wireless communication system employing an exemplary first RIS assistance implementation of the present application;

FIG. 9 is a diagram illustrating a first synchronization signal according to an exemplary embodiment of the present application;

FIG. 10 is a schematic diagram of a wireless communication system employing an exemplary second RIS assistance implementation of the present application;

FIG. 11 is a diagram illustrating a second exemplary synchronization signal according to the present application;

FIG. 12 is a schematic diagram of a wireless communication system employing a third RIS assistance implementation of the present application;

FIG. 13 is a diagram illustrating a third exemplary synchronization signal according to the present application;

FIG. 14 is a schematic diagram of a wireless communication system employing a fourth RIS assistance implementation of the present application;

FIG. 15 is a diagram of a fourth exemplary synchronization signal according to the present application;

Fig. 16 is a schematic structural diagram of a signal transmission device according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of a first network device according to an embodiment of the present application;

FIG. 18 is a schematic diagram of a terminal structure according to an embodiment of the present application;

fig. 19 is a schematic structural diagram of a second network device according to an embodiment of the present application;

fig. 20 is a schematic diagram of a signal transmission system according to an embodiment of the application.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and examples.

In the related art, in the initial access stage of the user, as shown in fig. 2, the base station periodically transmits a synchronization signal burst set (SS burst set may be expressed in english) in a beam scanning manner, that is, transmits different synchronization signal blocks (SSB, synchronization Signal Block) on different beams in a time division multiplexing manner, and the user selects the strongest beam direction to initiate a random access procedure.

After the wireless network introduces the RIS, coverage expansion can be performed by utilizing a plurality of reflection directions of the RIS, namely, blind area coverage is performed. The RIS is a passive device that can only passively reflect SSBs transmitted by the base station. Thus, in the initial access phase of the user, as shown in fig. 3a, the reflection beam scanning of the RIS needs to be performed in the same SSB beam direction of the base station.

In practical applications, considering that the synchronization signal burst sets in the related art are periodically transmitted, the reflection beam scanning of the RIS can be implemented in two ways of fig. 3b and 3 c. As shown in fig. 3b, the base station may configure different reflection beams of the RIS at the same SSB position in multiple periods, however, this may result in a longer period of the synchronization signal burst set, and may not guarantee the access delay of the blind user. Or as shown in fig. 3c, the base station may configure the reflection beam scanning of the RIS on the synchronization signal burst set in one period, however, so that the SSB used by the base station for the RIS beam scanning (i.e. the SSB used for the blind coverage) will occupy (i.e. occupy) the SSB used for the normal coverage (i.e. the non-blind coverage), resulting in too few SSBs actually used for the coverage, affecting the basic coverage of the cell.

As can be seen from the above description, in the related art, when the wireless network introduces the RIS, the base station cannot reasonably configure SSB transmission resources in the synchronization signal burst set, that is, the base station cannot reasonably configure SSB transmission resources for the blind zone coverage and SSB transmission resources for the normal coverage.

Based on this, in various embodiments of the present application, a first network device (e.g., a base station) configures and transmits two sets of signals with frequency domain offsets: the first signal set and the second signal set correspond to the same cell identifier and different frequency domain resource sets, and the time domain resource set corresponding to the second signal set is a subset or the whole set of the time domain resource set corresponding to the first signal set, so that the user reading time (namely, the system time sequence determined by the terminal for the received signal) corresponding to the first signal set and the second signal set is consistent, and therefore, the beam scanning of the first network device and the second network device can be simultaneously realized under the condition that the wireless network introduces the second network device (such as the network device containing RIS) capable of forwarding the signal in a reflection mode to assist the blind area user communication, namely, by configuring the second signal set for the second network device, the blind area coverage can be utilized while the base coverage (namely, the non-blind area coverage) of the cell is ensured by the signal in the first signal set, and the signal transmission resource for the base coverage of the cell can be reasonably distributed, in other words, the time delay of the base coverage of the cell can be ensured, and the base coverage of the cell can be ensured.

An embodiment of the present application provides a signal transmission method, applied to a first network device (such as a base station), including:

In an embodiment, the signals in the first and second signal sets (i.e., the first and second signals) may include at least one of:

A synchronization signal;

Broadcasting channel signals.

In actual application, for a terminal located in a cell corresponding to the first signal set and the second signal set, the terminal may directly receive a first signal in the first signal set sent by the first network device; or under the condition that the terminal cannot receive the first signal in the first signal set sent by the first network device, the terminal can receive the second signal in the second signal set sent by the first network device through the second network device, namely, the terminal receives the second signal in the second signal set forwarded by the second network device through reflection.

Here, the terminal may also be referred to as a User Equipment (UE), and may also be referred to as a User; the same cell identity corresponding to the first and second signal sets may comprise a Physical Cell Identity (PCI). It can be understood that, when the terminal cannot receive the first signal in the first signal set sent by the first network device, the terminal is a blind zone user of a corresponding cell, and needs to access the cell with the assistance of the second network device.

In practical application, the first signal set may be used to perform beam scanning of the first network device, that is, when the terminal receives one or more first signals in the first signal set, a random access procedure may be initiated by selecting a beam direction corresponding to a first signal with the best signal quality (i.e., the strongest signal strength). Accordingly, the second signal set may be used to perform beam scanning of the second network device, that is, when the terminal receives one or more second signals in the second signal set reflected by the second network device, a beam direction corresponding to a second signal with the best signal quality may be selected to initiate a random access procedure.

In practical application, since the frequency domain resource sets corresponding to the first signal set and the second signal set are different, and the time domain resource set corresponding to the second signal set is a subset or a complete set of the time domain resource set corresponding to the first signal set, the reading time (i.e., the system time sequence determined by the terminal for the received signal) of the user corresponding to the first signal set and the second signal set may be consistent, so that the beam scanning of the first network device and the beam scanning of the second network device may be simultaneously implemented.

In practical application, the first network device needs to configure the second signal set according to the receiving situation of the second network device for the first signal in the first signal set.

Based on this, in an embodiment, the method may further include:

Acquiring first information and second information of the second network device, wherein the first information indicates at least one first signal in the first signal set, and the second information indicates the number of reflected beams of the second network device;

Here, the first information may specifically indicate at least one first signal with the best signal quality (i.e. the strongest signal strength) among the one or more first signals in the first signal set received by the second network device.

In practical application, the second network device may detect the signal strength of the received one or more first signals and the number of reflected beams of the second network device, determine the first information and the second information according to the detection result, and send the determined first information and second information to the first network device. Wherein the number of reflected beams of the second network device depends on the signal reflection capability of the second network device, and is related to the implementation structure of the second network device, so the second information may also be stored in advance on the second network device; in other words, the second network device may also obtain the second information locally, and after determining the first information, send the first information and the second information to the first network device.

Based on this, in an embodiment, the acquiring the first information and the second information of the second network device may include:

In practical application, before receiving the first information and the second information sent by the second network device, the first network device needs to establish connection with the second network device. The specific type of connection established between the first network device and the second network device may be set according to requirements (such as network deployment requirements), such as Radio Link Control (RLC) protocol connection, etc., which is not limited by the embodiment of the present application. In addition, the first network device may send a control instruction for controlling the second network device to the second network device through the connection later, so the connection may also be referred to as a control link, and the name of the connection is not limited in the embodiment of the present application, so long as the function thereof is implemented.

In practical application, the second network device may include an RIS and an RIS control module, and the embodiment of the present application does not limit the specific structure of the second network device, so long as the function of the second network device is implemented (that is, the signal can be forwarded by reflection).

In practical application, the first network device may configure a group of second signals with the same frequency domain resource for each first signal indicated by the first information, and determine the number of second signals in each group of second signals according to the number of reflected beams of the second network device.

Based on this, in an embodiment, in a case where the second signal set includes at least one group of second signals, configuring the second signal set for the second network device based on the first information and the second information of the second network device may include:

Here, it can be understood that the number of first signals indicated by the first information is equal to the number of groups corresponding to second signals in the second signal set, that is, each first signal indicated by the first information corresponds to one group of second signals in the second signal set; in other words, the second set of signals comprises at least one group of second signals, each group of second signals comprising at least one second signal of the same frequency domain resource. In addition, the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or full sets of the time domain resource sets corresponding to the first signal sets.

In practical application, the number of the second signals in each group may be the same for at least one group of second signals contained in the second signal set. In addition, when the number of the second signals in each group is smaller than the number of the first signals contained in the first signal set, the time domain resource set corresponding to each group of the second signals is a subset of the time domain resource set corresponding to the first signal set. When the number of the second signals in each group is equal to the number of the first signals contained in the first signal set, the time domain resource set corresponding to each group of the second signals is the whole set of the time domain resource set corresponding to the first signal set, namely, the time domain resource sets corresponding to each group of the second signals and the first signal set are the same; in other words, the time domain position of the xth second signal in each group of second signals is the same as the time domain position of the xth first signal in the first signal set, X is an integer greater than 0, at this time, the sequence information indicating the time domain position in the xth second signal and the xth first signal may be the same, and the expression form of the sequence information may include a PBCH-demodulation reference signal (DMRS) sequence, which may be specifically set according to the types of the first signal and the second signal, and the embodiment of the present application is not limited thereto.

In practical application, the number of the second signals in each group needs to be smaller than or equal to the number of the reflected beams of the second network device, that is, the number of the reflected beams of the second network device needs to be smaller than or equal to the number of the first signals contained in the first signal set. Illustratively, the number of first signals, the number of second signals in each group, and the number of reflected beams of the second network device included in the first signal set may be 4.

In practical application, the cells corresponding to the first signal set and the second signal set may introduce (i.e. deploy) one or more second network devices to assist the blind area user communication, where the first network device needs to obtain first information and second information of each second network device in at least one second network device, and configure the second signal set for the at least one second network device based on the first information and the second information of each second network device.

For each of the at least one second network device, configuring at least one set of second signals based on at least one first signal associated with first information of the second network device, each set of second signals comprising at least one second signal having the same frequency domain resources, the number of second signals of each set being less than or equal to the number of reflected beams of the second network device; in other words, based on the first information of each second network device in the at least one second network device, determining the number of groups corresponding to the second signals in the second signal set, and based on the second information of each second network device in the at least one second network device, determining the number of second signals in each group corresponding to each second network device, wherein the number of second signals in each group is smaller than or equal to the number of first signals contained in the first signal set.

Wherein the number of groups corresponding to the second signals in the second signal set is equal to the sum of the number of first signals indicated by the first information of each of the at least one second network device. Illustratively, assuming that the cells corresponding to the first signal set and the second signal set introduce 3 second network devices, the number of reflected beams of each second network device, the number of first signals contained in the first signal set, and the number of second signals in each group are all 8, and assuming that the first information of each second network device indicates 2 first signals, and the first signals indicated by the first information of each second network device are different; the second signal set configured by the first network device for the 3 second network devices includes 6 groups of second signals, each group of second signals includes 8 second signals with the same frequency domain position, each group of second signals is the same as the time domain resource set corresponding to the first signal set, and the second signals of different groups correspond to different frequency domain positions.

When the terminal selects the beam direction corresponding to the first signal or the second signal with the best signal quality (i.e. the strongest signal strength) to initiate a random access procedure to the first network device in practical application, the first network device needs to configure corresponding resources for the beam direction, so that the terminal can select different resources to access a communication system. The first signal at least comprises a first identifier, and the second signal at least can indicate the first identifier of the corresponding first signal, namely the first network device identifies the first signal and the second signal and identifies the first signal and the second signal with corresponding relation, so that the first network device can judge whether the random access flow initiated by the terminal corresponds to the first signal or the second signal, and whether the terminal is a blind area user or not is distinguished; meanwhile, the terminal can distinguish whether the received signal is a first signal transmitted by the first network device or a second signal forwarded by the second network device (i.e., distinguish whether the received beam is a reflected beam).

Wherein, since the first network device may configure a set of second signals with the same frequency domain resource for each first signal indicated by the first information of each second network device, that is, a set of second signals corresponds to the same first signal, each second signal in the set of second signals can indicate at least the first identifier of the same first signal. It will be appreciated that in the case where only one second network device is deployed in the cell corresponding to the first signal set and the second signal set, and the first information of the second network device indicates only one first signal in the first signal set, the second signal set includes only one set of second signals, and each second signal in the set of second signals can indicate one first signal indicated by the first information of the second network device, in other words, each second signal in the set of second signals corresponds to the same first signal.

In practical applications, the first identifier may include a signal index, such as an SSB index.

In practical application, the second signal may indicate the first identifier of the corresponding first signal in a display manner, for example, the second signal may include the first identifier of the corresponding first signal.

Wherein in an embodiment, the second signal includes a first identifier of the corresponding first signal, which may include:

In particular, the first identity of the corresponding first signal may be indicated visually by the PBCH payload (payload) of the second signal, and illustratively, two bits may be reserved at the last (i.e., end portion) of the 8-bit PBCH payload of the second signal to indicate the first identity of the corresponding first signal visually. Here, the PBCH payload of the second signal may also include an index of the second signal (may be referred to as a second identifier of the second signal), and the second identifier of the second signal and the first identifier of the first signal corresponding to the second signal may be referred to as a third identifier together; in other words, the second signal may include a third identifier, where the third identifier is used to identify both the second signal and the first identifier that indicates the first signal corresponding to the second signal, that is, the third identifier includes the second identifier of the second signal and the first identifier of the first signal corresponding to the second signal.

In practical application, the second signal may also implicitly indicate the first identification of the corresponding first signal.

In an embodiment, the second signal implicitly indicates the first identifier of the corresponding first signal, which may include:

Specifically, the first network device may perform PBCH scrambling coding (english may be expressed as Scrambling) on the second signal by using the identifier of the first signal corresponding to the second signal, and after receiving the second signal, the terminal descrambles the received second signal and checks a cyclic redundancy check code (CRC) correctly, so as to obtain the first identifier of the first signal corresponding to the second signal.

In practical application, when the terminal selects a beam direction corresponding to a second signal with the best signal quality (i.e. the strongest signal strength) to initiate a random access procedure, the terminal may send a random access request including a preamble to the first network device through the second network device, where the preamble or a time domain and/or frequency domain resource of the preamble may be associated with a second identifier of the second signal, and the association may be sent by the first network device to the terminal through the second network device, or may be preconfigured on the first network device and the terminal, that is, the first network device and the terminal may determine, according to the same logic, the association between the preamble or the time domain and/or frequency domain resource of the preamble and the second identifier of the second signal. The first network device may determine the second signal based on the received preamble, that is, determine a reflected beam of the second network device corresponding to the terminal, and may send a control instruction to the second network device according to the determined reflected beam, so as to control the second network device to adjust a reflection phase.

Correspondingly, the embodiment of the application also provides a signal transmission method which is applied to the terminal and comprises the following steps:

In an embodiment, the receiving the first signal set sent by the network side may include:

One or more first signals in the first set of signals transmitted by a first network device (e.g., a base station) are received directly.

In an embodiment, the receiving the second signal set sent by the network side may include:

One or more second signals of the second set of signals forwarded by the second network device (such as a network device containing the RIS) by way of reflection are received.

Here, after the terminal receives at least one first signal or at least one second signal, the terminal may select a beam direction corresponding to the first signal or the second signal with the best signal quality (i.e. the strongest signal strength) to initiate a random access procedure to the network side. When the terminal selects a beam direction corresponding to a second signal with the optimal signal quality to initiate a random access procedure, the terminal may send a random access request including a preamble to the first network device through the second network device, where the preamble or a time domain and/or frequency domain resource of the preamble may be associated with a second identifier (such as an index of the second signal) of the second signal, and the first network device may determine the second signal based on the received preamble, that is, determine a reflected beam of the second network device corresponding to the terminal, and may send a control instruction to the second network device according to the determined reflected beam, so as to control the second network device to adjust a reflection phase.

Correspondingly, the embodiment of the application also provides a signal transmission method applied to a second network device (such as a network device containing RIS), comprising the following steps:

Correspondingly, the embodiment of the application also provides a signal transmission method, as shown in fig. 4, which comprises the following steps:

Step 401: the method comprises the steps that first network equipment sends a first signal set and a second signal set, frequency domain resource sets corresponding to the first signal set and the second signal set are different, time domain resource sets corresponding to the second signal set are subsets or whole sets of time domain resource sets corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first set of signals includes at least one first signal and the second set of signals includes at least one second signal; the first signal at least comprises a first identifier, and the second signal at least can indicate the first identifier of the corresponding first signal;

step 402: and the terminal receives the first signal set or the second signal set sent by the first network equipment.

According to the signal transmission method provided by the embodiment of the application, a first network device sends a first signal set and a second signal set, frequency domain resource sets corresponding to the first signal set and the second signal set are different, time domain resource sets corresponding to the second signal set are subsets or whole sets of time domain resource sets corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first set of signals includes at least one first signal and the second set of signals includes at least one second signal; the first signal at least comprises a first identifier, and the second signal at least can indicate the first identifier of the corresponding first signal; and the terminal receives the first signal set or the second signal set sent by the first network equipment. According to the scheme provided by the embodiment of the application, a first network device (such as a base station) configures and transmits two sets of signal sets with frequency domain offset: the first signal set and the second signal set correspond to the same cell identifier and different frequency domain resource sets, and the time domain resource set corresponding to the second signal set is a subset or the whole set of the time domain resource set corresponding to the first signal set, so that the user reading time (namely, the system time sequence determined by the terminal for the received signal) corresponding to the first signal set and the second signal set is consistent, and therefore, the beam scanning of the first network device and the second network device can be simultaneously realized under the condition that the wireless network introduces the second network device (such as the network device containing RIS) capable of forwarding the signal in a reflection mode to assist the blind area user communication, namely, by configuring the second signal set for the second network device, the blind area coverage can be ensured by utilizing the second signal set while the base coverage (namely, the non-blind area coverage) of the signal guarantee cell in the first signal set, and the signal transmission resource for the base coverage of the cell can be reasonably distributed, in other words, the time delay of the base coverage of the cell can be ensured, and the base coverage of the cell can be ensured.

The application is described in further detail below in connection with application examples.

In this application example, the first network device includes a base station; the second network device includes an RIS (which may also be referred to as an RIS reflector) and an RIS control module; the terminal is called a user; the signals in the first and second signal sets comprise synchronization signals, the first signal being referred to as primary SSB and the second signal being referred to as secondary SSB. The base station configures and transmits two sets of synchronization signals with frequency domain offset on different synchronization grids: the two sets of SSB correspond to the same physical cell identifier, the time domain resource set corresponding to the second SSB is the whole set of the time domain resource set corresponding to the first SSB, namely the second SSB and the first SSB correspond to the same time domain resource set, and the beam scanning of the base station and the RIS is realized through the first SSB and the second SSB.

In this application example, as shown in fig. 5, the blind zone user synchronization procedure implemented by the RIS auxiliary cell may include the following steps:

Step 501: the base station and the RIS control module establish a connection of a control link, and then execute step 502;

step 502: the RIS control module reports the number of the strongest beam and the number of the reflected beams of the RIS to the base station, and then step 503 is executed;

Here, the RIS control module may measure and report, to the base station, m beams with the strongest signal strength (i.e. the first information) and the total number N of RIS reflected beams (i.e. the second information) in the original synchronization signal (i.e. the primary SSB for guaranteeing the cell base coverage), where m and N are integers greater than 0.

Step 503: the base station configures two sets of frequency-divided synchronization signals (i.e., primary SSB and secondary SSB), and then performs step 504;

Step 504: the blind area user searches for SSB for synchronization (i.e., after the blind area user starts up, the blind area user searches for SSB for synchronization in different synchronization grids), measures the signal strength of each beam, selects the strongest beam as the resident beam, and then executes step 505;

Step 505: the blind zone user initiates an initial access request, sends a preamble to the base station, the preamble is associated with the secondary SSB index of the resident beam (i.e. the strongest beam) (or the time domain and/or frequency domain resource corresponding to the preamble is associated with the secondary SSB index of the strongest beam), and then performs step 506;

Step 506: the base station determines the RIS reflected beam of the blind area user based on the received preamble, informs the RIS control module to adjust the reflection phase of the RIS, and then executes step 507;

step 507: the RIS control module adjusts the reflection coefficient (i.e., reflection phase) of the RIS.

In step 503, after receiving the report result of the RIS control module, the base station needs to configure a set of synchronization signals (i.e. secondary SSB) for indicating the reflection beam scanning of the RIS on the basis that the original synchronization signals (i.e. primary SSB for guaranteeing the basic coverage of the cell) remain unchanged.

Specifically, as shown in fig. 6, the secondary SSB is offset in frequency (the specific offset may be set according to the requirement) with respect to the primary SSB, that is, the secondary SSB and the primary SSB are respectively located in different frequency grids, and the number M of frequency grids corresponding to the secondary SSB (that is, the number of groups corresponding to the second signal in the second signal set) is equal to the sum of the number M of optimal beams (that is, the beams with the strongest intensities) reported by each of one or more RIS deployed in the current cell; illustratively, where the current cell deploys only one RIS to assist in blind zone user communications, M is equal to M; under the condition that RIS-1 and RIS-2 are deployed in the current cell, and the control module of the RIS-1 reports M1 beams with the strongest signal strength to the base station and the control module of the RIS-2 reports M2 beams with the strongest signal strength to the base station, M is equal to M1 plus M2.

Meanwhile, in order to ensure that the time reading is consistent (that is, ensure that the system time sequences of the primary SSB and the secondary SSB are consistent when the user reads the primary SSB and the secondary SSB), the secondary SSB corresponds to the same time domain resource set as the primary SSB, that is, the time domain positions of each column of SSBs in fig. 6 are the same, the sequence information indicating the time domain positions contained in the primary SSB and the secondary SSB with the same time domain positions is the same, and the sequence information may include a PBCH-DMRS sequence and the like.

In addition, each row of the secondary SSBs shown in fig. 6 is a set of secondary SSBs (i.e., the set of second signals described above), each set of secondary SSBs includes the same number (i.e., N) of secondary SSBs as the number of corresponding RIS reflection beams, and each set of secondary SSBs corresponds to the same one of the secondary SSBs. Here, since the base station needs to configure corresponding resources for each beam direction, in order to facilitate distinguishing users, so that the users can select different resource access systems, the base station needs to configure an association relationship between the primary SSB index and the secondary SSB index, that is, for one primary SSB corresponding to each group of secondary SSBs, each secondary SSB in the group of secondary SSBs needs to indicate an index of the primary SSB (that is, the first identifier of the corresponding first signal).

In practical applications, the secondary SSB may include the index of the corresponding primary SSB in a display manner through the PBCH payload, for example, the last two reserved bits of the 8-bit PBCH payload may indicate the corresponding primary SSB index in a display manner. Or as shown in fig. 7, the index of the corresponding primary SSB may be implicitly indicated by PBCH scrambling, i.e., the secondary SSB is scrambled with the index of the primary SSB at the time of scrambling; after descrambling is carried out by the blind area user and CRC is correct, a primary SSB index corresponding to the secondary SSB can be obtained.

In this application example, as shown in fig. 8, in the case that only one RIS is deployed in the current cell to assist in blind area user communication, if the control module of the RIS reports the number 0 base station beam with the strongest intensity to the base station, and if the number of base station beams and the number of RIS reflected beams are both 4, the primary SSB and the secondary SSB configured and sent by the base station are as shown in fig. 9, where the frequency of each primary SSB is the same, the frequency of each secondary SSB is the same, the secondary SSB has an offset in frequency with respect to the primary SSB, and is located in different frequency grids; and, the secondary SSB is identical to the primary SSB in position in the time domain, and the secondary SSB contains an index of the corresponding primary SSB (i.e., base station beam No. 0).

In this application example, as shown in fig. 10, in the case where only one RIS is deployed in the current cell to assist blind user communication, assuming that the user 1 and the user 2 are in the coverage area of the RIS and the user 3 is in the normal coverage area of the base station, the user synchronization process in this scenario may include the following steps:

Step 1: the base station and the RIS control module establish the connection of a control link, and then step 2 is executed;

Step 2: the RIS control module measures and reports the total number 4 of the No. 0 base station beam with the strongest signal intensity and the RIS reflection beam to the base station, and then the step 3 is executed;

Step 3: the base station reconfigures the synchronization signals, as shown in fig. 11, two sets of synchronization signals are configured on different synchronization grids, the time domain positions are the same, the first row is SSB (i.e. primary SSB) of the base station, the second row is SSB (i.e. secondary SSB) sent for the RIS beam scanning, the secondary SSB comprises primary SSB index 0 corresponding to base station beam No. 0, and then step 4 is executed;

Step 4: starting a user, searching SSB in different synchronization grids to synchronize, measuring the received signal strength of each beam, and selecting the strongest beam as a resident beam; user 1 selects the RIS reflected beam number 3 (0-3), user 2 selects the RIS reflected beam number 2 (0-2), and user 3, which is not covered by RIS, selects the base station beam number 3 as the stay beam, and then step 5 is executed;

Step 5: user 1 and user 2 initiate initial access request, and send the preamble, the time domain and/or frequency domain resource of the preamble or the preamble are respectively associated with the RIS reflection beams of 0-3 and 0-2; the preamble sent by the user 3 is associated with the base station beam 3, and then the step 6 is executed;

Step 6: the base station determines RIS reflected beams corresponding to the user 1 and the user 2 based on the received preamble, and informs the RIS control module to adjust the reflection phase; for user 3, the base station may perform a normal random access response, and then perform step 7;

Step 7: the RIS control module controls the RIS reflecting plate to adjust the reflecting phase so as to utilize the time division service of two users in the blind area.

In this application example, as shown in fig. 12, in a case where only one RIS is deployed in the current cell to assist in blind user communication, it is assumed that the user 1 and the user 2 are in the coverage area of the RIS, and that the RIS corresponds to 2 base station beams, the user synchronization procedure in this scenario may include the following steps:

Step 2: the RIS control module measures and reports the number 0 and number 1 base station beams with the strongest signal intensity and the total number 4 of RIS reflected beams to the base station, and then step 3 is executed;

Step 3: the base station reconfigures the synchronous signals, as shown in fig. 13, two sets of synchronous signals are configured on different synchronous grids, and the time domain positions are the same; the first row is a first-level SSB, the second row is a second-level SSB, the first-level SSB index 0 is included, and the first-level SSB index corresponds to a number 0 base station beam; the third row is also a second-level SSB, which includes a first-level SSB index 1 corresponding to the base station beam No.1, and then step 4 is executed;

Step 4: starting a user, searching SSB in different synchronization grids to synchronize, measuring the received signal strength of each beam, and selecting the strongest beam as a resident beam; user 1 selects the No. 2 (0-2) RIS reflected beam corresponding to the No. 0 base station beam as the stay beam, user 2 selects the No. 0 (1-0) RIS reflected beam corresponding to the No. 1 base station beam as the stay beam, and then step 5 is executed;

step 5: the blind area user 1 and the blind area user 2 initiate an initial access request, a preamble is sent, the time domain and/or frequency domain resources of the preamble or the preamble are respectively associated with RIS reflection beams of No. 0-2 and No. 1-0, and then step 6 is executed;

Step 6: the base station determines RIS reflected beams of the user 1 and the user 2 based on the received preamble, informs the RIS control module of adjusting the reflection phase, and then executes the step 7;

Step 7: the RIS control module controls the RIS reflecting plate to adjust the reflecting phase.

In this application example, as shown in fig. 14, in the case where two RIS (RIS 1 and RIS 2) are deployed in the current cell, assuming that the coverage of the RIS 1 is the coverage of the user 2, the coverage of the RIS2 is the coverage of the user 1, the user 3 and the user 4, the user synchronization procedure in this scenario may include the following steps:

step 1: the base station establishes connection of control links with the control modules of the RIS 1 and the RIS 2 respectively, and then executes the step 2;

Step 2: the control module of the RIS 1 measures and reports the total number 8 of the No. 3 base station beam with the strongest signal intensity and the RIS 1 reflected beam to the base station; the control module of the RIS 2 measures and reports the total number 4 of the No. 0 base station beam with the strongest signal intensity and the RIS 2 reflected beam to the base station, and then the step 3 is executed;

Step 3: the base station reconfigures the synchronous signals, as shown in fig. 15, two sets of synchronous signals are configured on different synchronous grids, and the time domain positions are the same; the first row is a first-level SSB, the second row is a second-level SSB, the first-level SSB index 0 is included, and the first-level SSB index corresponds to a number 0 base station beam; the third row is also a second-level SSB, which includes a first-level SSB index 3 corresponding to the base station beam No. 3, and then step 4 is executed;

Here, since the number of reflection units of the RIS 1 is greater, more beams can be reflected, resulting in the number of RIS reflection beams being greater than the number of base station beams. At this time, the extra secondary SSBs (i.e., secondary SSBs 3-4, 3-5, 3-6, 3-7 in fig. 15) need to be configured at the same frequency and at the subsequent time domain position in the same synchronization signal burst period, i.e., after the secondary SSBs 3-4, 3-5, 3-6, 3-7 are configured at the secondary SSBs 3-3, the secondary SSBs 3-0, 3-1, 3-2, 3-3 are limited in the same synchronization signal burst period; or the number of RIS reflection beams may be limited in the communication system to be less than or equal to the number of base station beams (i.e., the number of reflection beams of the second network device described above is required to be less than or equal to the number of first signals comprised by the first signal set).

Step 4: starting a user, searching SSB in different synchronization grids to synchronize, measuring the received signal strength of each beam, and selecting the strongest beam as a resident beam; blind zone user 1 selects number 2 (0-2) RIS reflected beam corresponding to number 0 base station beam, blind zone user 2 selects number 4 (3-4) RIS reflected beam corresponding to number 3 base station beam, user 3 selects number 3 (3-3) RIS reflected beam corresponding to number 3 base station beam, user 4 selects number 2 (3-2) RIS reflected beam corresponding to number 3 base station beam as resident beam, and then step 5 is executed;

step 5:4 users all initiate initial access requests, send a preamble, and the time domain and/or frequency domain resources of the preamble are respectively associated with respective resident beams, and then step 6 is executed;

Step 6: the base station determines RIS reflection beams of 4 users based on the received lead codes, respectively informs control modules of RIS 1 and RIS 2 to adjust reflection phases, and then executes step 7;

step 7: the RIS 1 and RIS 2 control modules respectively control the corresponding RIS reflecting plates to adjust the reflecting phases.

In practical application, a wireless communication system realized by RIS assistance can be deployed for a low-frequency spectrum (such as a Frequency Range (FR) 1) scene, and a primary SSB and a secondary SSB are configured, on one hand, because the wave beam is wider in low-frequency spectrum deployment, the number of SSBs in a synchronous signal burst set is less, and the wave beam scanning of a base station and the RIS can be completed in time in a specified period; on the other hand, the low-frequency spectrum scene supports the simultaneous transmission of beams in different directions at different frequency bands, and has no influence on the transmission power of the SSB after the frequency domain is expanded, and the cell coverage (namely, the basic coverage of the cell) is not influenced.

The scheme provided by the application example has the following advantages:

1) The two sets of synchronous signals are distinguished through frequency, the period of a synchronous signal burst set is not enlarged, the user access time delay is not increased due to RIS beam scanning, and the user access time delay in a cell can be ensured;

2) The primary SSB is kept unchanged (namely, the number of SSBs originally used for cell basic coverage is not adjusted), so that the number of normal synchronous signals can be ensured, the cell coverage is not affected under the scenes of low-frequency spectrum deployment and the like, and the cell coverage of the base station can be ensured.

In order to implement the method at the first network device side in the embodiment of the present application, the embodiment of the present application further provides a signal transmission device, which is disposed on the first network device, as shown in fig. 16, and the device includes:

a first transmitting unit 1601, configured to transmit a first signal set and a second signal set, where frequency domain resource sets corresponding to the first signal set and the second signal set are different, and a time domain resource set corresponding to the second signal set is a subset or a complete set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

In one embodiment, as shown in fig. 16, the apparatus may further include: an obtaining unit 1602 is configured to obtain first information and second information of a second network device, where the first information indicates at least one first signal in the first signal set, and the second information indicates a number of reflected beams of the second network device.

In one embodiment, as shown in fig. 16, the apparatus may further include: a processing unit 1603, configured to configure the second signal set for the second network device based on first information and second information of the second network device, the first information and second information being associated with at least a number of second signals in the second signal set.

In an embodiment, the second set of signals includes at least one group of second signals; the processing unit 1603 is specifically configured to:

In an embodiment, the second set of signals includes at least one group of second signals; the processing unit 1603 is specifically configured to configure, for each of the at least one second network device, at least one set of second signals based on at least one first signal associated with the first information of the second network device, each set of second signals including at least one second signal with the same frequency domain resource, the number of second signals being less than or equal to the number of reflected beams of the second network device; the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or whole sets of the time domain resource sets corresponding to the first signal sets.

In an embodiment, the obtaining unit 1602 is specifically configured to receive the first information and the second information sent by the second network device.

In practical application, the first sending unit 1601 may be implemented by a communication interface in the first network device; the processing unit 1603 may be implemented by a processor in the first network device; the acquisition unit 1602 may be implemented by a processor in the first network device in combination with a communication interface.

In order to implement the method at the terminal side of the embodiment of the present application, the embodiment of the present application further provides a signal transmission device, which is disposed on a terminal, and the device includes:

In practical application, the receiving unit may be implemented by a communication interface in the terminal.

In order to implement the method at the second network device side in the embodiment of the present application, the embodiment of the present application further provides a signal transmission device, which is disposed on the second network device, and the device includes:

In practical application, the second sending unit may be implemented by a communication interface in the second network device.

It should be noted that: the signal transmission device provided in the above embodiment is only exemplified by the division of the above program modules when transmitting signals, and in practical application, the above processing allocation may be performed by different program modules according to needs, i.e. the internal structure of the device is divided into different program modules to complete all or part of the above processing. In addition, the signal transmission device and the signal transmission method provided in the foregoing embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.

Based on the hardware implementation of the program module, and in order to implement the method at the first network device side in the embodiment of the present application, the embodiment of the present application further provides a first network device, as shown in fig. 17, where the first network device 1700 includes:

a first communication interface 1701 that enables information interaction with a terminal and/or other network device (e.g., a second network device);

The first processor 1702 is connected to the first communication interface 1701, so as to implement information interaction with a terminal and/or other network devices, and is configured to execute, when running a computer program, a method provided by one or more technical solutions on the first network device side;

A first memory 1703, the computer program being stored on the first memory 1703.

Specifically, the first communication interface 1701 is configured to send a first signal set and a second signal set, where frequency domain resource sets corresponding to the first signal set and the second signal set are different, and time domain resource sets corresponding to the second signal set are subsets or whole sets of time domain resource sets corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

Wherein in an embodiment, the first processor 1702 is configured to obtain, through the first communication interface 1701, first information and second information of a second network device, where the first information indicates at least one first signal in the first signal set, and the second information indicates a number of reflected beams of the second network device.

In an embodiment, the first processor 1702 is further configured to configure the second signal set for the second network device based on first information and second information of the second network device, where the first information and the second information are associated with at least a number of second signals in the second signal set.

In an embodiment, the second set of signals includes at least one group of second signals; the first processor 1702 is specifically configured to:

In an embodiment, the second set of signals includes at least one group of second signals; the first processor 1702 is specifically configured to configure, for each of at least one second network device, at least one set of second signals based on at least one first signal associated with first information of the second network device, where each set of second signals includes at least one second signal with the same frequency domain resource, and the number of second signals in each set is less than or equal to the number of reflected beams of the second network device; the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or whole sets of the time domain resource sets corresponding to the first signal sets.

In an embodiment, the first communication interface 1701 is further configured to receive first information and second information sent by the second network device.

It should be noted that: the specific processing procedures of the first communication interface 1701 and the first processor 1702 may be understood by referring to the above method, and will not be described herein.

Of course, in actual practice, the various components in first network device 1700 would be coupled together via bus system 1704. It is appreciated that the bus system 1704 is used to implement a connected communication between these components. The bus system 1704 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration, the various buses are labeled as bus system 1704 in fig. 17.

The first memory 1703 in the embodiment of the present application is used to store various types of data to support the operation of the first network device 1700. Examples of such data include: any computer program for operating on first network device 1700.

The method disclosed in the above embodiment of the present application may be applied to the first processor 1702 or implemented by the first processor 1702. The first processor 1702 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method may be implemented by an integrated logic circuit of hardware in the first processor 1702 or an instruction in software form. The first Processor 1702 described above may be a general purpose Processor, a digital signal Processor (DSP, digital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The first processor 1702 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the application can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the first memory 1703 and the first processor 1702 reads information from the first memory 1703, in combination with hardware, to perform the steps of the methods described above.

In an exemplary embodiment, first network device 1700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable logic devices (PLDs, programmable Logic Device), complex Programmable logic devices (CPLDs, complex Programmable Logic Device), field-Programmable gate arrays (FPGAs), general purpose processors, controllers, microcontrollers (MCUs, micro Controller Unit), microprocessors (microprocessors), or other electronic elements for performing the foregoing methods.

Based on the hardware implementation of the program modules, and in order to implement the method at the terminal side in the embodiment of the present application, the embodiment of the present application further provides a terminal, as shown in fig. 18, where the terminal 1800 includes:

a second communication interface 1801 capable of information interaction with the network side;

A second processor 1802, connected to the second communication interface 1801, so as to implement information interaction with a network side, and configured to execute, when running a computer program, a method provided by one or more technical solutions on the terminal side;

a second memory 1803, said computer program being stored on said second memory 1803.

Specifically, the second communication interface 1801 is configured to receive a first signal set or a second signal set sent by a network side, where frequency domain resources corresponding to the first signal set and the second signal set are different, and a time domain resource set corresponding to the second signal set is a subset or a complete set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; wherein,

It should be noted that: the specific processing procedure of the second communication interface 1801 may be understood by referring to the above method, and will not be described herein.

Of course, in actual practice, the various components in terminal 1800 are coupled together by bus system 1804. It is appreciated that the bus system 1804 is employed to facilitate connected communications between these components. The bus system 1804 includes a power bus, a control bus, and a status signal bus in addition to the data bus. The various buses are labeled as bus system 1804 in fig. 18 for clarity of illustration.

The second memory 1803 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 1800. Examples of such data include: any computer program for operating on the terminal 1800.

The method disclosed in the above embodiment of the present application may be applied to the second processor 1802 or implemented by the second processor 1802. The second processor 1802 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method described above may be performed by instructions in the form of integrated logic circuits or software in hardware in the second processor 1802. The second processor 1802 described above may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 1802 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the application can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the second memory 1803 and the second processor 1802 reads the information in the second memory 1803 to perform the steps of the method in combination with its hardware.

In an exemplary embodiment, the terminal 1800 can be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general-purpose processors, controllers, MCU, microprocessor, or other electronic components for performing the foregoing methods.

Based on the hardware implementation of the program module, and in order to implement the method on the second network device side in the embodiment of the present application, the embodiment of the present application further provides a second network device, as shown in fig. 19, where the second network device 1900 includes:

A third communication interface 1901 capable of information interaction with a terminal and/or other network device (e.g., a first network device);

a third processor 1902, connected to the third communication interface 1901, for implementing information interaction with a terminal and/or other network devices, and configured to execute, when running a computer program, a method provided by one or more technical solutions on the second network device side;

a third memory 1903, said computer program being stored on said third memory 1903.

Specifically, the third communication interface 1901 is configured to send first information and second information to a first network device, where the first information and the second information are used to configure a second signal set for the second network device 1900, where the second signal set is different from a frequency domain resource set corresponding to the first signal set, and a time domain resource set corresponding to the second signal set is a subset or a whole set of a time domain resource set corresponding to the first signal set, and the first signal set and the second signal set correspond to the same cell identifier; the first information indicates at least one first signal of the first set of signals and the second information indicates a number of reflected beams of the second network device 1900; the first information and second information are associated with at least a number of second signals in the second set of signals; wherein,

It should be noted that: the specific processing procedure of the third communication interface 1901 may be understood by referring to the above method, and will not be described herein.

Of course, in actual practice, the various components in second network device 1900 are coupled together via bus system 1904. It is appreciated that the bus system 1904 is used to implement the connected communications between these components. The bus system 1904 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration, the various buses are labeled as bus system 1904 in fig. 19.

The third memory 1903 in the embodiment of the present application is used to store various types of data to support the operation of the second network device 1900. Examples of such data include: any computer program for operating on second network device 1900.

The method disclosed in the above embodiment of the present application may be applied to the third processor 1902 or implemented by the third processor 1902. The third processor 1902 may be an integrated circuit chip with signal processing capability. In implementation, the steps of the method may be implemented by an integrated logic circuit of hardware or an instruction in software form in the third processor 1902. The third processor 1902 described above may be a general purpose processor, DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The third processor 1902 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the application can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the third memory 1903 and the third processor 1902 reads information in the third memory 1903 and performs the steps of the methods described above in connection with its hardware.

In an exemplary embodiment, second network device 1900 may be implemented by one or more ASIC, DSP, PLD, CPLD, FPGA, general purpose processors, controllers, MCU, microprocessor, or other electronic elements for performing the foregoing methods.

It is to be understood that the memories (the first memory 1703, the second memory 1803, and the third memory 1903) of the embodiments of the present application may be volatile memories or nonvolatile memories, and may include both volatile and nonvolatile memories. Wherein the nonvolatile Memory may be Read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable programmable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable programmable Read Only Memory (EEPROM, ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only Memory), magnetic random access Memory (FRAM, ferromagnetic random access Memory), flash Memory (Flash Memory), magnetic surface Memory, optical disk, or compact disk-Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory) which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as static random access memory (SRAM, static Random Access Memory), synchronous static random access memory (SSRAM, synchronous Static Random Access Memory), dynamic random access memory (DRAM, dynamic Random Access Memory), synchronous dynamic random access memory (SDRAM, synchronous Dynamic Random Access Memory), double data rate synchronous dynamic random access memory (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link dynamic random access memory (SLDRAM, syncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, direct Rambus Random Access Memory). The memory described by embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

In order to implement the method provided by the embodiment of the present application, the embodiment of the present application further provides a signal transmission system, as shown in fig. 20, where the system includes: a first network device 2001, a terminal 2002, and a second network device 2003.

Here, it should be noted that: specific processing procedures of the first network device 2001, the terminal 2002 and the second network device 2003 are described in detail above, and will not be described herein.

In an exemplary embodiment, the present application further provides a storage medium, i.e., a computer storage medium, specifically a computer readable storage medium, for example, including a first memory 1703 storing a computer program, where the computer program may be executed by the first processor 1702 of the first network device 1700 to perform the steps of the foregoing first network device side method. Further for example, a second memory 1803 storing a computer program executable by the second processor 1802 of the terminal 1800 to perform the steps of the terminal-side method described above. Further for example, the third memory 1903 may store a computer program that may be executed by the third processor 1902 of the second network device 1900 to perform the steps of the second network device side method described above. The computer readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," etc. are used to distinguish similar objects and not necessarily to describe a particular order or sequence.

In addition, the embodiments of the present application may be arbitrarily combined without any collision.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application.

Claims

1. A method for signal transmission, applied to a first network device, comprising:

2. The method of claim 1, wherein the second signal indicates the first identity of the corresponding first signal by one of:

3. The method of claim 2, wherein the second signal implicitly indicates the first identity of the corresponding first signal, comprising:

4. The method of claim 2, wherein the second signal comprises a first identification of the corresponding first signal, comprising:

The physical broadcast channel PBCH of the second signal contains a first identification of the corresponding first signal.

5. The method of claim 1, wherein the second set of signals comprises at least one group of second signals, each group of second signals comprising at least one second signal having the same frequency domain resources; the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or whole sets of the time domain resource sets corresponding to the first signal sets.

6. The method according to any one of claims 1 to 5, further comprising:

7. The method of claim 6, wherein the method further comprises:

8. The method of claim 7, wherein the second set of signals comprises at least one group of second signals; the configuring the second signal set for the second network device based on the first information and the second information of the second network device includes:

9. The method of claim 7, wherein the second set of signals comprises at least one group of second signals; the configuring the second signal set for the second network device based on the first information and the second information of the second network device includes:

10. The method of claim 6, wherein the obtaining the first information and the second information of the second network device comprises:

11. The method of claim 6, wherein the second network device comprises a reconfigurable intelligent surface RIS and RIS control module.

12. The method of any of claims 1 to 5, wherein the signals in the first and second signal sets comprise at least one of:

A synchronization signal;

Broadcasting channel signals.

13. A signal transmission method, applied to a terminal, comprising:

14. The method of claim 13, wherein the second signal indicates the first identity of the corresponding first signal by one of:

15. The method of claim 14, wherein the second signal implicitly indicates the first identity of the corresponding first signal, comprising:

16. The method of claim 14, wherein the second signal comprises a first identification of the corresponding first signal, comprising:

17. The method of claim 13, wherein the second set of signals comprises at least one group of second signals, each group of second signals comprising at least one second signal having the same frequency domain resources; the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or whole sets of the time domain resource sets corresponding to the first signal sets.

18. The method according to any of claims 13 to 17, wherein the signals in the first and second signal sets comprise at least one of:

A synchronization signal;

Broadcasting channel signals.

19. A method of signal transmission, for use with a second network device, comprising:

20. The method of claim 19, wherein the second signal indicates the first identity of the corresponding first signal by one of:

21. The method of claim 20, wherein the second signal implicitly indicates the first identity of the corresponding first signal, comprising:

22. The method of claim 20, wherein the second signal comprises a first identification of the corresponding first signal, comprising:

23. The method of claim 19, wherein the second set of signals comprises at least one group of second signals, each group of second signals comprising at least one second signal having the same frequency domain resource; the second signals of different groups correspond to different frequency domain resources, and the time domain resource sets corresponding to the second signals of different groups are subsets or whole sets of the time domain resource sets corresponding to the first signal sets.

24. The method of claim 23, wherein the first information is used to determine a number of groups corresponding to second signals in the second set of signals, and wherein the second information is used to determine a number of second signals in each group of second signals, and wherein the number of second signals in each group of second signals is less than or equal to the number of first signals included in the first set of signals.

25. A method according to any one of claims 19 to 24, wherein the second network device comprises a RIS and a RIS control module.

26. The method of any of claims 19 to 24, wherein the signals in the first and second signal sets comprise at least one of:

A synchronization signal;

Broadcasting channel signals.

27. A signal transmission device, comprising:

28. A signal transmission device, comprising:

29. A signal transmission device, comprising:

30. A first network device, comprising: a first communication interface and a first processor; wherein,

31. A terminal, comprising: a second communication interface and a second processor; wherein,

32. A second network device, comprising: a third communication interface and a third processor; wherein,

33. A first network device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

Wherein the first processor is adapted to perform the steps of the method of any of claims 1 to 12 when the computer program is run.

34. A terminal, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

Wherein the second processor is adapted to perform the steps of the method of any of claims 13 to 18 when the computer program is run.

35. A second network device, comprising: a third processor and a third memory for storing a computer program capable of running on the processor,

Wherein the third processor is adapted to perform the steps of the method of any of claims 19 to 26 when the computer program is run.

36. A storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method of any one of claims 1 to 12, or performs the steps of the method of any one of claims 13 to 18, or performs the steps of the method of any one of claims 19 to 26.