Signal processing method, network device, storage medium, and program product

Abstract

Embodiments of the present application relate to the technical field of communications, and provide a signal processing method, a network device, a storage medium, and a program product. The method comprises: a first entity sends a carrier signal to a second entity; the second entity receives the carrier signal (S110) and determines a reference frequency or a reference time by means of configuration or predefinition (S120); and the second entity determines, on the basis of the reference frequency or the reference time, a reference interval for reflecting the carrier signal (S130).

Description

Signal processing method, network device, storage medium and program product

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202410171832.3 and application date February 5, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The embodiments of the present application relate to, but are not limited to, the field of communication technologies, and in particular to a signal processing method, a network device, a storage medium, and a program product. Background Art

[0004] In the field of wireless communication technology, with the continuous advancement of radio technology, IoT (Internet of Things) services are also included in existing communication systems. In related technologies, in order to adapt to the power supply requirements and harsh environments of IoT devices in IoT services, IoT devices without battery power have been derived, such as Ambient-IoT (A-IoT) and Passive-IoT (P-IoT); However, when existing A-IoT devices coexist with existing communication systems, there are problems with time resource determination and alignment. Therefore, how to determine the system time resources of A-IoT in the Ambient-IoT communication scenario and achieve time resource alignment with traditional communication services (such as 4G / 5G / 6G, etc.) in the communication system is a technical problem that needs to be solved urgently.

[0005] Summary of the Invention

[0006] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0007] Embodiments of the present application provide a signal processing method, a network device, a storage medium, and a program product.

[0008] In a first aspect, an embodiment of the present application provides a signal processing method, comprising: receiving a carrier signal sent by a first entity; determining a reference frequency or a reference time by configuration or predefinition; and determining a reference interval for reflecting the carrier signal based on the reference frequency or the reference time.

[0009] In a second aspect, an embodiment of the present application provides a signal processing method, including: sending a carrier signal to a second entity; determining a reference frequency or a reference time through configuration or predefinition; determining a reference interval at which the second entity reflects the carrier signal based on the reference frequency or the reference time; and receiving the carrier signal reflected by the second entity based on the reference interval.

[0010] In a third aspect, an embodiment of the present application provides a network device, comprising: a memory, a processor, and a computer program stored in the memory and runnable on the processor, wherein when the processor executes the computer program, it implements the signal processing method as described in any one of the first aspect or the second aspect.

[0011] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the signal processing method as described in any one of the first aspect or the second aspect.

[0012] In a fifth aspect, an embodiment of the present application provides a computer program product, comprising a computer program or computer instructions, wherein the computer program or the computer instructions are stored in a computer-readable storage medium, and the processor of a network device reads the computer program or the computer instructions from the computer-readable storage medium, and the processor executes the computer program or the computer instructions, so that the network device performs the signal processing method as described in any one of the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1a is a network topology diagram of a first embodiment of an A-IoT service application;

[0014] FIG1b is a network topology diagram of a second embodiment of an A-IoT service application;

[0015] FIG1c is a network topology diagram of a third embodiment of an A-IoT service application;

[0016] FIG1d is a network topology diagram of a fourth embodiment of an A-IoT service application;

[0017] FIG2 is a partial system diagram of a communication network system to which the signal processing method according to an embodiment of the present application is applied;

[0018] FIG3 is a flow chart of an embodiment of a signal processing method according to an embodiment of the present application;

[0019] FIG4a is a schematic diagram of a frame structure of an embodiment of a radio frame used for time resource alignment in a signal processing method according to an embodiment of the present application;

[0020] FIG4 b is a schematic diagram of a frame structure of another embodiment of a radio frame for time resource alignment in the signal processing method according to an embodiment of the present application;

[0021] FIG5a is a schematic diagram of time resource alignment in an OFDM symbol alignment scenario in a signal processing method according to an embodiment of the present application;

[0022] FIG5 b is a schematic diagram of time resource alignment in another embodiment of the signal processing method in the embodiment of the present application in the OFDM symbol alignment scenario;

[0023] FIG6 a is a schematic diagram of time resource alignment in a time slot alignment scenario in a signal processing method according to an embodiment of the present application;

[0024] FIG6 b is a schematic diagram of time resource alignment in another embodiment of the signal processing method in the embodiment of the present application in a time slot alignment scenario;

[0025] FIG7a is a schematic diagram of time resource alignment in a subframe alignment scenario in a signal processing method according to an embodiment of the present application;

[0026] FIG7 b is a schematic diagram of time resource alignment in another embodiment of the signal processing method in the embodiment of the present application in a subframe alignment scenario;

[0027] FIG8a is a schematic diagram of time resource alignment in a radio frame alignment scenario in a signal processing method according to an embodiment of the present application;

[0028] FIG8b is a schematic diagram of time resource alignment in another embodiment of the signal processing method in the embodiment of the present application in a radio frame alignment scenario;

[0029] FIG9 is a flow chart of another embodiment of a signal processing method according to an embodiment of the present application;

[0030] FIG10 is a schematic diagram of the hardware structure corresponding to the signal processing method according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0032] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0033] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0034] The following are the Chinese and English definitions of the terms used in the embodiments of this application.

[0035] With the continuous advancement of radio technology, a wide variety of radio services have emerged. In addition to cellular services between base stations and terminals, LTE (Long Term Evolution) and NR (New Radio) systems also include IoT (Internet of Things) services. Typical IoT services in LTE systems include NB-IoT (Narrow Band-Internet of Things), MTC (Machine Type Communication), and eMTC (Enhanced Machine-Type Communication). Typical IoT services in NR systems include RedCap (Reduced Capability) and eRedCap (Reduced Capability NR). IoT devices involved in these IoT services are typically powered by traditional batteries with limited lifespans. Maintaining continuous operation of IoT devices and replacing batteries can be challenging in extreme environmental conditions. Related technologies have proposed IoT devices that are not battery-powered, such as Ambient-IoT (A-IoT) or Passive-IoT (P-IoT). These can maintain the normal operation of IoT devices by converting the energy of radio frequency signals in the surrounding environment collected by IoT devices into electrical energy, or converting energy from other forms of energy (such as solar energy, wind energy, mechanical vibration, etc.) into electrical energy, or collecting electrical energy from circuit coupling or converting collected energy into electrical energy. On the other hand, an increasingly wide range of large-scale commercial use cases (such as warehousing, logistics, supply chain, smart home, environmental monitoring, smart agriculture and animal husbandry, finding items, shopping malls, venue guides, medical device status modification, device activation and deactivation, elderly care, etc.) require IoT devices with very small size and longer life cycle. Therefore, in LTE systems, NR systems, and future communication systems, it is necessary to consider IoT devices with lower power consumption, lower complexity, and lower cost that are not battery-powered.

[0036] Taking A-IoT devices as an example, IoT devices can be divided into two main categories: the first category of devices can communicate by modulating and reflecting received carrier signals; the second category of devices has independent signal generation capabilities and can communicate by generating a complete communication signal chain. More broadly, there is another category of devices that have both of these capabilities, namely, they can communicate by modulating and reflecting received carrier signals, and they also have independent signal generation capabilities and can communicate by generating a complete communication signal chain. The carrier signal can be an unmodulated continuous waveform or an unmodulated carrier wave. These two concepts are equivalent and are represented in this article as CW. For example, CW can be a sine wave, a cosine wave, etc. The communication network topologies used by A-IoT devices can be categorized into four main types: The first type, as shown in Figure 1a, involves direct communication between network nodes and A-IoT devices; the second type, as shown in Figure 1b, involves the presence of relay nodes between network nodes and A-IoT devices; the third type, as shown in Figure 1c, involves the presence of auxiliary nodes between network nodes and A-IoT devices, which can assist in downlink or uplink communication; and the fourth type, as shown in Figure 1d, involves direct communication between terminal nodes and A-IoT devices. In these network topologies, carriers from other nodes within or outside the topology can be provided to ambient IoT devices. Links in each network topology can be bidirectional or unidirectional. There can be multiple network nodes, terminal nodes, auxiliary nodes, or relay nodes. Network nodes, relay nodes, auxiliary nodes, and terminal nodes can also function as readers or interrogators, and A-IoT devices can also function as tags. However, in practical applications, A-IoT devices face challenges in coexisting with existing communication systems, which involves time resources and alignment issues. Based on this, the present application provides a signal processing method, network device, storage medium and program product to solve the problem of determining the time resources of the A-IoT system in the ambient Internet of Things communication scenario and aligning the time resources with other systems (such as 4G / 5G / 6G systems) through the signal processing method of the embodiment of the present application.

[0037] In one embodiment, as shown in Figure 2, an embodiment of the present application provides a communication network system, which includes at least a first entity and a second entity. The first entity sends a carrier signal to the second entity, the second entity receives the carrier signal sent by the first entity and determines a reference frequency or reference time through configuration or predefinition, and then determines a reference interval of the reflected carrier signal based on the determined reference frequency or reference time. After determining the reference interval, the second entity modulates the carrier signal of the first entity and reflects the modulated carrier signal to the first entity according to the reference interval, and the first entity can receive the carrier signal reflected by the second entity according to the reference interval.

[0038] Therefore, by configuring or predefining a reference frequency or reference time, and then using the determined reference frequency or reference time as the basis for the reference interval of the carrier signal reflected to the first entity, when the carrier signal is used as the carrier of the communication frame of the traditional communication service in the communication system, after determining the reference interval for reflecting the carrier signal, the reference interval can be used to determine the system time resources of the A-IoT in the environmental Internet of Things communication scenario and to achieve alignment of time resources, so that the first entity can normally parse the reflected carrier signal based on the reference interval. Therefore, compared with the related art, the embodiment of the present application can determine the system time resources of the A-IoT in the environmental Internet of Things communication scenario, and achieve alignment with the time resources of the traditional communication service in the communication system.

[0039] In one embodiment, the first entity can be any communication node of a non-A-IoT device as shown in Figures 1a to 1d, and the second entity can also be any communication node as shown in Figures 1a to 1d; thereby, the transmission of IoT services in the communication network system can be achieved. In one embodiment, as shown in Figure 1a, there are multiple network nodes, and the first entity and the second entity can both be network nodes. In this case, the first entity and the second entity can refer to the implementation steps in the communication system shown in Figure 2 to achieve the transmission of uplink or downlink IoT services. Similarly, taking Figure 1a as an example, the first entity can be a network node and the second entity can be an environmental IoT device. Therefore, after receiving the carrier signal sent by the network node, the second entity can determine the reference interval for time resource alignment with the first entity and reflect the carrier signal based on the reference interval. The first entity can then interpret the carrier signal reflected by the second entity based on the reference interval, thereby normally interpreting the carrier signal reflected by the second entity, thereby achieving the transmission of IoT services.

[0040] In one embodiment, in actual application, the communication network system may further include multiple groups of communication nodes that perform the same functions as the first entity and the second entity.

[0041] In some embodiments, the frequency of the reflected carrier signal is equal to the frequency of the carrier signal transmitted by the first entity. In other embodiments, the frequency of the reflected carrier signal is equal to the sum of the frequency of the carrier signal transmitted by the first entity and a frequency offset, or equal to the difference between the frequency of the carrier signal transmitted by the first entity and the frequency offset. The frequency offset represents the difference between the frequency of the carrier signal transmitted by the first entity and the frequency of the reflected carrier signal.

[0042] 3 , an embodiment of the present application provides a signal processing method, which may include but is not limited to the following steps.

[0043] Step S110: Receive a carrier signal sent by the first entity.

[0044] Step S120: Determine a reference frequency or reference time through configuration or predefinition.

[0045] Step S130: Determine a reference interval of the reflected carrier signal according to a reference frequency or a reference time.

[0046] Therefore, by configuring or predefining a reference frequency or reference time, and then using the determined reference frequency or reference time as the basis for the reference interval of the carrier signal reflected to the first entity, when the carrier signal is used as the carrier of the communication frame of the traditional communication service in the communication system, after determining the reference interval for reflecting the carrier signal, the reference interval can be used to determine the system time resources of the A-IoT in the environmental Internet of Things communication scenario and to achieve alignment of time resources, so that the first entity can normally parse the reflected carrier signal based on the reference interval. Therefore, compared with the related art, the embodiment of the present application can determine the system time resources of the A-IoT in the environmental Internet of Things communication scenario, and achieve alignment with the time resources of the traditional communication service in the communication system.

[0047] In one embodiment, the reference interval is the basic period of transmission of the reflected carrier signal, for example, the reference interval of one or more reflected carrier signals corresponds to the modulation symbol duration of one reflected carrier signal, or the modulation symbol duration of one or more reflected carrier signals corresponds to one reference interval. In one implementation, the reference interval of one reflected carrier signal is equal to the modulation symbol duration of one reflected carrier signal. For another example, in another implementation, the modulation symbol durations of two reflected carrier signals correspond to one reference interval. For another example, in yet another implementation, the reference intervals of three reflected carrier signals correspond to the modulation symbol duration of one reflected carrier signal.

[0048] In one embodiment, steps S110 to S120 are performed by the second entity. The carrier signal sent by the first entity is an unmodulated carrier signal.

[0049] In one embodiment, a reference frequency can be selected to determine the reference interval of the reflected carrier signal. In another embodiment, the reference interval of the reflected carrier signal can be determined based on the reference time. In practical applications, the reference frequency or reference time can be selectively configured and defined based on actual needs. In one embodiment, the reference interval is Z times the reference time; in another embodiment, the reference interval is Z times the unit time period corresponding to the reference frequency. Z can be selectively set based on actual needs; thus, the reference frequency and reference time can be used to determine the system time resources of A-IoT in the environmental Internet of Things communication scenario, as well as to achieve alignment with the time resources of traditional communication services in the communication system.

[0050] In one embodiment, the configuration of the reference frequency or reference time may be dynamic and changeable in real time; the predefinition of the reference frequency or reference time may be pre-set and cannot be changed in subsequent applications. Those skilled in the art may select one of the above reference frequencies or reference times to determine the reference interval based on actual application circumstances.

[0051] In one embodiment, the frequency of the carrier signal reflected by the second entity (represented by F2) is determined based on the frequency of the carrier signal sent by the first entity (represented by F1) and the frequency offset, wherein the frequency offset is an optional configuration item. In some embodiments, the frequency offset may or may not be configured. Among them, F1 can be determined by configuration or predefinition, or can be determined based on the duration of the calibration signal, which is not specifically limited here. The frequency offset can also be determined by configuration or predefinition, or can be determined based on the duration of the calibration signal, which is not specifically limited here. At this time, the reference interval can be determined based on one of the carrier signal of the first entity, the frequency of the carrier signal reflected by the second entity, and the frequency offset as the reference frequency. In one embodiment, the duration of the calibration signal can be determined based on the type of the calibration signal.

[0052] In one embodiment, the frequency of the carrier signal transmitted by the first entity is defined as F1, the frequency of the carrier signal reflected by the second entity is defined as F2, and the frequency offset between F2 and F1 is defined as F3. Then, F2 = F1 + F3 or F2 = F1 - F3. Wherein, F1 can be determined by configuration or pre-definition, or F1 can be determined according to the calibration signal duration T cal,1 Obtained by calculation, such as F1=X / T cal,1 , X is an arbitrary number. In one embodiment, when X=1, F1=1 / T cal,1 For example, in another embodiment, when X=7, F1=7 / T cal,1 Wherein, F3 can be determined by configuration or pre-definition, or F3 can be determined according to the calibration signal duration T cal,3 Obtained by calculation, such as F3=X / T cal,3 , X is an arbitrary number. In one embodiment, when X=1, F3=1 / T cal,3 For example, in another embodiment, when X=4, F3=4 / T cal,3 When F3 is not configured or does not exist, F2 = F1, that is, the frequency of the reflected carrier signal is the same as the frequency of the transmitted carrier signal. In one embodiment, for F1 and F3, when both are calculated using the calibration signal duration, the value of X can be the same or different. For example, in some embodiments, F1 = 2 / T cal,1 ; F3=4 / T cal,3For example, in some other embodiments, F1=2 / T cal,1 ; F3=2 / T cal,3 .

[0053] It is understandable that the first entity may include at least one of the following:

[0054] Network nodes;

[0055] Relay nodes;

[0056] Auxiliary nodes;

[0057] terminal nodes;

[0058] Radio resource control layer;

[0059] Radio link control layer;

[0060] Media access control layer;

[0061] Physical layer.

[0062] In one embodiment, the network node may be a network device in a communication system for processing traditional communication services, such as a base station.

[0063] In one embodiment, the relay node may be an IAB, a repeater, a terminal node with a relay function, or other network devices that can be used to expand network coverage.

[0064] In one embodiment, the auxiliary node may be, for example, an IAB, a repeater, a terminal node with a relay function, or other network devices that can be used for data preprocessing and conversion.

[0065] In one embodiment, the terminal node may be a user equipment.

[0066] It should be understood that the radio resource control layer, ie, the RRC layer, is one of the layers in the LTE radio access protocol architecture.

[0067] It should be understood that the radio link control layer, ie, the RLC layer, is one of the layers in the LTE wireless access protocol architecture.

[0068] It should be understood that the media access control layer, also known as the MAC layer, is one of the layers in the LTE wireless access protocol architecture.

[0069] It should be understood that the physical layer, also known as the PHY layer, is one of the layers in the LTE wireless access protocol architecture.

[0070] In one embodiment, there may be multiple first entities, and correspondingly, there may be multiple second entities corresponding one to one with the first entity. For example, in FIG1b , the network node in the figure is node 1, the relay node is node 2, and there may be multiple network nodes (such as node 3, node 4, ..., node n, etc.) between node 1 and node 2. Then, in the downlink direction (the transmission direction from node 1 to the environmental Internet of Things device), when node 1 is the first entity, node 3 may be the second entity; and when node 3 is the first entity, node 1 may be the second entity; and so on, so there may be multiple first entities and multiple second entities. In another embodiment, a communication node such as a physical layer may be provided between node 1 and node 2. Then, there may be a situation where the first entity is the physical layer and the second entity is a network node, or there may be a situation where the first entity is the physical layer and the second entity is an environmental Internet of Things device.

[0071] It is understandable that the signal processing method may be applied to a second entity, which may include at least one of the following:

[0072] Relay nodes;

[0073] Auxiliary nodes;

[0074] terminal nodes;

[0075] Environmental IoT devices.

[0076] It should be understood that ambient Internet of Things devices are also known as A-IoT devices.

[0077] In one embodiment, taking the first entity as a network node and the second entity as a relay node as an example, the network node sends a carrier signal to the relay node. After the relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the network node with the reference interval as the basic period.

[0078] In one embodiment, taking the first entity as the first relay node and the second entity as the second relay node as an example, the first relay node sends a carrier signal to the second relay node. After the second relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the first relay node with the reference interval as the basic period.

[0079] In one embodiment, taking the first entity as an auxiliary node and the second entity as a relay node as an example, the auxiliary node sends a carrier signal to the relay node. After the relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the auxiliary node with the reference interval as the basic period.

[0080] In one embodiment, taking the first entity as a terminal node and the second entity as a relay node as an example, the terminal node sends a carrier signal to the relay node. After the relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the terminal node with the reference interval as the basic period.

[0081] In one embodiment, taking the first entity as a wireless resource control layer and the second entity as a relay node as an example, the wireless resource control layer sends a carrier signal to the relay node. After the relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the wireless resource control layer with the reference interval as the basic period.

[0082] In one embodiment, taking the first entity as a wireless link control layer and the second entity as a relay node as an example, the wireless link control layer sends a carrier signal to the relay node. After the relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the wireless link control layer with the reference interval as the basic period.

[0083] In one embodiment, taking the first entity as a media access control layer and the second entity as a relay node as an example, the media access control layer sends a carrier signal to the relay node. After the relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the media access control layer with the reference interval as the basic period.

[0084] In one embodiment, taking the first entity as the physical layer and the second entity as the relay node as an example, the physical layer sends a carrier signal to the relay node. After the relay node determines the reference frequency or reference time through configuration or predefinition, it determines the reference interval of the reflected carrier signal based on one of the reference frequency or reference time, and reflects the carrier signal to the physical layer with the reference interval as the basic period.

[0085] Similarly, with reference to the above embodiment, the second entity may be an auxiliary node, and the first entity may be one of a network node, a relay node, an auxiliary node, a terminal node, a radio resource control layer, a radio link control layer, a media access control layer, and a physical layer. In other embodiments, the second entity may be a terminal node, and the first entity may be one of a network node, a relay node, an auxiliary node, a terminal node, a radio resource control layer, a radio link control layer, a media access control layer, and a physical layer. In other embodiments, the second entity may be an environmental Internet of Things device, and the first entity may be one of a network node, a relay node, an auxiliary node, a terminal node, a radio resource control layer, a radio link control layer, a media access control layer, and a physical layer.

[0086] In one embodiment, the above-mentioned first entity and second entity are some network devices participating in the A-IOT service transmission in the communication system. The specific combination of the first entity and the second entity can be selectively set according to actual conditions, and this embodiment of the application does not limit this.

[0087] It is understandable that the reference frequency is the frequency of the carrier signal, the frequency of the carrier signal is determined by configuration or predefinition, or determined according to the duration of the calibration signal, and the reference interval is Y times the inverse of the frequency of the carrier signal, where Y is any value greater than 0.

[0088] In one embodiment, the carrier signal may be determined based on configuration; in another embodiment, the carrier signal may be determined based on predefinition; in another embodiment, the carrier signal may be determined based on the duration of the calibration signal, and the embodiments of the present application do not impose any restrictions on this.

[0089] In one embodiment, the reference interval T of the reflected carrier signal r =Y / F1; wherein F1 is the frequency of the carrier signal. Y can be selectively set according to actual needs, such as 1, 1.5, etc., and this embodiment of the application does not limit this.

[0090] It can be understood that the reference frequency is the frequency of the reflected carrier signal, the frequency of the reflected carrier signal is calculated based on the frequency of the carrier signal, and the reference interval is Y times the inverse of the frequency of the reflected carrier signal, where Y is any value greater than 0.

[0091] In some embodiments, the frequency of the reflected carrier signal is equal to the frequency of the carrier signal transmitted by the first entity. In other embodiments, the frequency of the reflected carrier signal is obtained based on the frequency of the carrier signal and a frequency offset, where the frequency offset is the frequency difference between the reflected carrier signal and the carrier signal transmitted by the first entity.

[0092] In one embodiment, the reference interval T of the reflected carrier signalr =Y / F2; wherein F2 is the frequency of the carrier signal reflected by the second entity. Y can be selectively set according to actual needs, such as 1, 2.5, etc., and this embodiment of the application does not limit this.

[0093] It can be understood that the reference frequency is the frequency offset between the frequency of the reflected carrier signal and the frequency of the carrier signal. The frequency offset is determined by configuration or predefinition, or determined according to the duration of the calibration signal. The reference interval is Y times the inverse of the frequency offset, where Y is any value greater than 0.

[0094] In some embodiments, the frequency offset is determined by configuration, in other embodiments, the frequency offset is determined by predefinition, and in still other embodiments, the frequency offset is determined based on the duration of the calibration signal. This embodiment of the present application does not limit this, and those skilled in the art can selectively set it according to actual needs.

[0095] In one embodiment, the reference interval T of the reflected carrier signal r =Y / F3, where F3 is the frequency offset. Y can be selectively set according to actual needs. Y is an arbitrary number. In some implementations, it can be set to 1, 2.5, etc. This embodiment of the application does not limit this.

[0096] It should be understood that, in actual applications, the reference interval of the reflected carrier signal confirmed by the first entity and the second entity can be selected from one of the three methods mentioned above, that is, the reference interval T of the reflected carrier signal r =Y / F1 or T r =Y / F2 or T r =Y / F3, where Y is an arbitrary number.

[0097] It can be understood that the reference time is the duration of an OFDM symbol, and the reference interval is Z times the duration of an OFDM symbol, where Z is any value greater than 0.

[0098] In one embodiment, traditional communication services use radio frames as the largest unit in the time structure for service transmission, as shown in Figures 4a and 4b. Taking the LTE system as an example, a radio frame consists of 10 subframes, and the duration of a subframe is equal to 1 TTI (Transport Time Interval). TTI is the basic time unit for service scheduling. Each subframe consists of 2 time slots, and the duration of each time slot can also be determined based on the duration of the OFDM symbol, where the duration of the OFDM symbol is called unit time. The duration of RE is the duration of an OFDM symbol. In addition to the valid data part, the OFDM symbol also has a cyclic prefix (CP), which is an additional overhead. There are two types of CP lengths, as shown in Figure 4a, one is a normal CP; as shown in Figure 4b, the other is an extended CP.

[0099] In one embodiment, the reference interval of the reflected CW Z is an arbitrary number (e.g., when Z=1, ); is the OFDM symbol duration, μ represents the subcarrier spacing adjustment factor; l is the OFDM symbol index. is the number of OFDM symbol samples without CP, is the number of CP samples (in one embodiment, the CP includes a first-type normal cyclic prefix, a second-type normal cyclic prefix, and an extended cyclic prefix, wherein the first-type cyclic prefix is ​​located at l=0 or l=7·2 μ , the second type of cyclic prefix is ​​located between l≠0 and l≠7·2 μ , and the first type of cyclic prefix is ​​16κ longer than the second type of cyclic prefix, κ=64), T c Indicates the time unit; T c =1 / (Δf max ·N f ), Δf max =480·10 3 Hz, N f =4096, Δf represents the subcarrier spacing. In one example, Δf=2 μ 15kHz.

[0100] Therefore, by setting the reference interval to Z times the duration of the OFDM symbol, the reflected carrier signal can be aligned with the time resource of the radio frame, thereby achieving alignment with the time resource of traditional communication services in the communication system.

[0101] It can be understood that a delimiter and several reference intervals are aligned with the boundaries of OFDM symbols.

[0102] In one embodiment, the delimiter is used to distinguish the alignment boundary of the OFDM symbol, and can be located at the boundary at the starting position or the boundary at the ending position of the aligned OFDM symbol. As shown in Figures 5a and 5b, a delimiter is provided at the boundary at the starting position of the OFDM symbol. In one embodiment, no signal is received or sent within the time resource corresponding to the delimiter. In one embodiment, when the second entity acts as the transmitter, no signal is transmitted within the time resource corresponding to the delimiter; when the second entity acts as the receiver, no signal is received within the time resource corresponding to the delimiter. In some embodiments, the duration corresponding to the delimiter is the delimiter duration or the dummy duration.

[0103] In some embodiments, the plurality of reference intervals represent one reference interval, and in other embodiments, the plurality of reference intervals represent multiple reference intervals. As shown in FIG5 a , one delimiter and three reference intervals are aligned with one OFDM symbol.

[0104] In one embodiment, the duration corresponding to the separator may be zero or non-zero. Those skilled in the art may selectively set the duration according to actual needs, and the present embodiment does not limit this.

[0105] In one embodiment, taking the duration of the separator as zero as an example, there is but Reference interval alignment

[0106] In one embodiment, taking the duration of the separator as non-zero as an example, but Reference interval alignment The duration corresponding to the delimiter is As shown in FIG5 a and FIG5 b , the delimiter may be located at the front end of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter.

[0107] In some embodiments, the delimiter may also be set as a dummy bit, and no signal is transmitted or received in the time resource corresponding to the dummy bit. The dummy bit may be located at the front or back of all reference intervals under the same aligned OFDM symbol.

[0108] It can be understood that several reference intervals are aligned with the boundaries of OFDM symbols.

[0109] In one embodiment, when no delimiter is set or the duration of the delimiter is configured to be zero, a plurality of reference intervals are aligned with the OFDM boundary.

[0110] In one embodiment, the plurality of reference intervals may be one reference interval or multiple reference intervals, which is not limited in the embodiment of the present application, and those skilled in the art may selectively set according to actual needs.

[0111] Taking Figure 5a as an example, three reference intervals are aligned with one OFDM symbol.

[0112] Taking Figure 5b as an example, two OFDM symbols are aligned with one reference interval.

[0113] It can be understood that several OFDM symbols are aligned with the boundary of a delimiter and a reference interval.

[0114] In one embodiment, several OFDM symbols aligned with a delimiter and several of a reference interval may represent one, or multiple, and the embodiment of the present application does not limit this, and those skilled in the art may selectively set it according to actual needs.

[0115] In one embodiment, one OFDM symbol is aligned with the boundary of a delimiter and a reference interval.

[0116] In one embodiment, multiple OFDM symbols are aligned with one delimiter and several reference intervals; as shown in FIG5 b , one delimiter and one reference interval are aligned with two OFDM symbols.

[0117] It can be understood that several OFDM symbols are aligned with the boundaries of the reference interval.

[0118] In one embodiment, no delimiter is provided; in another embodiment, the duration corresponding to the delimiter is configured as 0, so that several OFDM symbols are aligned with the boundary of a reference interval. In one embodiment, for example, one OFDM symbol is aligned with the boundary of a reference interval. In another embodiment, three OFDM symbols are aligned with the boundary of a reference interval. Those skilled in the art can determine the number of OFDM symbols when aligning a reference interval with the OFDM symbol based on actual needs.

[0119] In summary, the present application does not impose too many restrictions on the quantitative relationship between delimiters, reference intervals, and OFDM alignment. Those skilled in the art can set the delimiter, reference interval, and OFDM alignment relationship according to actual needs.

[0120] It can be understood that the reference time is the duration of the time slot, and the reference interval is Z times the duration of the time slot, where Z is any value greater than 0.

[0121] In one embodiment, a time slot is a time unit under a radio frame. By setting the reference interval to Z times the duration of the time slot, the time resources of the IoT service and the traditional communication service can be aligned.

[0122] In one embodiment, as shown in FIG6a and FIG6b, the reference interval in, It represents the duration of the time slot, and μ represents the subcarrier spacing adjustment factor.

[0123] It is understood that a delimiter and several reference intervals are aligned with the boundaries of the time slots.

[0124] In one embodiment, the delimiter can be used to separate the aligned time slot boundaries, and one or more reference intervals can be selectively set according to actual needs. but Reference interval alignment The duration corresponding to the delimiter is The delimiter may be located at the front or the back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter. In some embodiments, a pseudo bit is equivalent to a delimiter.

[0125] In one embodiment, a delimiter and a reference interval are aligned with a slot boundary.

[0126] In one embodiment, as shown in FIG6a , a delimiter and multiple reference intervals are aligned with the boundary of a time slot, wherein the delimiter is located at the front-end boundary of each time slot. In other embodiments, the delimiter may also be located at the rear-end boundary of each time slot to distinguish the number of reference intervals corresponding to each time slot.

[0127] It will be appreciated that several reference intervals are aligned with the boundaries of time slots.

[0128] In one embodiment, no delimiter is set or the duration corresponding to the delimiter is set to 0. Therefore, several reference intervals are aligned with the boundary of a time slot. but Reference interval alignment The duration corresponding to the delimiter is 0. In some embodiments, a pseudo bit is equivalent to a delimiter.

[0129] In one embodiment, a reference interval is aligned with a time slot boundary.

[0130] In one embodiment, multiple reference intervals are aligned with a time slot boundary, such as 5 reference intervals are aligned with a time slot boundary.

[0131] It is understood that several time slots are aligned with the boundary of a delimiter and a reference interval.

[0132] In one embodiment, the plurality of time slots is at least one time slot. That is, in some embodiments, one time slot is aligned with a delimiter and a reference interval boundary. In other embodiments, multiple time slots are aligned with a delimiter and a reference interval boundary. For example, in FIG6b , two time slots are aligned with a delimiter and a reference interval boundary.

[0133] It will be appreciated that several time slots are aligned with the boundaries of the reference interval.

[0134] In some embodiments, when time resource alignment is performed, no delimiter is set between reference intervals, or the duration of the delimiter is zero. Therefore, multiple time slots are aligned to the boundaries of the reference intervals. In one example, one time slot is aligned to one reference interval. In another example, as shown in FIG6b , two time slots are aligned to the boundaries of one reference interval.

[0135] It can be understood that the reference time is the duration of the subframe, and the reference interval is Z times the duration of the subframe, where Z is any value greater than 0.

[0136] In one embodiment, as shown in FIG4a and FIG4b, a subframe is another time structure unit under a radio frame. r =Z*T sf ; Among them, T sf Indicates the duration of the subframe.

[0137] In one embodiment, as shown in FIG. 7 a and FIG. 7 b , the reference interval is aligned with the boundary of the subframe, so that the time resources of the IoT service and the traditional communication service are aligned.

[0138] It can be understood that a delimiter and several reference intervals are aligned with the boundaries of the subframes.

[0139] In one embodiment, when aligning with a subframe, the number of reference intervals may be one or more, which is not limited in this embodiment of the present application, and those skilled in the art may selectively set the number according to actual needs.

[0140] In one embodiment, a delimiter and a reference interval are aligned with subframe boundaries.

[0141] In one embodiment, as shown in FIG. 7 a , one delimiter and five reference intervals are aligned with one subframe boundary.

[0142] In one embodiment, the delimiter is used to distinguish the boundaries of subframes in the scenario where the delimiter is aligned with the subframe boundary. sf modT r ≠0, then floor(T sf / T r ) reference intervals aligned to T sf , the duration corresponding to the separator is Tsf -floor(T sf / T r )·T r The delimiter may be located at the front end (as shown in FIG7 a ) or the back end of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter. In some embodiments, a pseudo bit is equivalent to a delimiter.

[0143] It is understood that several reference intervals are aligned with subframe boundaries.

[0144] In one embodiment, in the scenario where the delimiter is aligned with the subframe boundary, the delimiter may not be set or the duration corresponding to the delimiter may be set to zero, that is, T sf modT r =0, then T sf / T r Reference interval alignment T sf , the duration corresponding to the delimiter is zero. In this case, several reference intervals are aligned with a subframe boundary. In one embodiment, the pseudo bit is equivalent to the delimiter.

[0145] In one embodiment, a reference interval is aligned with a subframe boundary.

[0146] In one embodiment, multiple reference intervals are aligned with one subframe boundary, such as two reference intervals are aligned with one subframe boundary.

[0147] It can be understood that several subframes are aligned with the boundary of a delimiter and a reference interval.

[0148] In one embodiment, in the scenario of subframe alignment, multiple subframes may be aligned with one delimiter and one reference interval, or one subframe may be aligned with one delimiter and one reference interval, that is, T r modT sf ≠0, then floor(T r / T sf ) subframes aligned T r , the separator or false position duration is T r -floor(T r / T sf )·T sf The delimiter can be located at the front or the back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter.

[0149] Taking the example of aligning multiple subframes with a delimiter and a reference interval, as shown in FIG7b , two subframes are aligned with a delimiter and a reference interval. That is, T r modT sf ≠0.

[0150] It can be understood that several subframes are aligned with the boundary of the reference interval.

[0151] In one embodiment, in a subframe alignment scenario, multiple subframes may be aligned to one reference interval, or one subframe may be aligned to one reference interval. r modT sf =0, then T r / T sf Subframe alignment T r , the duration corresponding to the separator is zero.

[0152] Take the case where multiple subframes are aligned with one reference interval as an example, such as 2 subframes are aligned with one reference interval.

[0153] It can be understood that the reference time is the duration of the radio frame, and the reference interval is Z times the duration of the radio frame, where Z is any value greater than 0.

[0154] In one embodiment, a radio frame is the largest unit of time structure in a communication system. Aligning the reference time with the radio frame can achieve alignment of time resources of IoT services and traditional communication services.

[0155] In one embodiment, the reference interval T r =Z*T f ; Among them, T f is the duration of the wireless frame, and Z is any non-zero number.

[0156] In one embodiment, as shown in Figure 8a, one radio frame may be aligned with five reference intervals and one delimiter. As shown in Figure 8b, two radio frames may be aligned with one delimiter and one reference interval.

[0157] It can be understood that a delimiter and several reference intervals are aligned with the boundaries of the radio frame.

[0158] In one embodiment, in the scenario of alignment with radio frames, the delimiter, reference interval, and radio frame satisfy the following relationship: f modT r ≠0, then floor(T f / T r ) reference intervals aligned to T f , the separator or false position duration is T f -floor(T f / T r )·T r The delimiter may be located at the front or the back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter. In one embodiment, the dummy bit is equivalent to the delimiter.

[0159] In one example, a delimiter and a reference interval are aligned with a boundary of a radio frame.

[0160] In one example, as shown in FIG8a , each delimiter and five reference intervals are aligned with one radio frame. When there are multiple radio frames, each delimiter and five reference intervals are aligned as a group.

[0161] It is understood that several reference intervals are aligned with the boundaries of radio frames.

[0162] In one embodiment, no delimiter is configured or the duration corresponding to the delimiter is zero. Therefore, in some embodiments, one reference interval is aligned with the boundary of a radio frame, and in other embodiments, multiple reference intervals are aligned with the boundary of a radio frame (e.g., three reference intervals are aligned with the boundary of a radio frame).

[0163] It is understood that several radio frames are aligned with the boundary of a delimiter and a reference interval.

[0164] In one embodiment, in the scenario of radio frame alignment, multiple radio frames may be aligned with one delimiter and one reference interval, or one radio frame may be aligned with one delimiter and one reference interval, that is, T r modT f ≠0, then floor(T r / T f ) wireless frames aligned to T r , the duration corresponding to the separator is T r -floor(T r / T f )·T f , the delimiter can be located at the front or the end of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter. r is the reference interval, T f The duration of the radio frame.

[0165] Taking the example of aligning multiple radio frames with a delimiter and a reference interval, as shown in FIG8b , two radio frames are aligned with a reference interval and a delimiter.

[0166] It is understood that several radio frames are aligned with the boundary of the reference interval.

[0167] In one embodiment, in the scenario of alignment with wireless frames, when no delimiter is set or the duration corresponding to the delimiter is zero, one wireless frame is aligned with one reference interval, or multiple wireless frames are aligned with one reference interval (such as two wireless frames are aligned with one reference interval, etc.).

[0168] It is understandable that, as shown in FIG9 , no signal is transmitted or received within the time resource corresponding to the delimiter.

[0169] It can be understood that a signal processing method provided according to the second aspect of the embodiments of the present application includes the following steps S210 to S240.

[0170] Step S210: Send a carrier signal to the second entity.

[0171] Step S220: Determine a reference frequency or reference time through configuration or predefinition.

[0172] Step S230: Determine a reference interval for the second entity to reflect the carrier signal according to the reference frequency or the reference time.

[0173] Step S240: Receive a carrier signal reflected by the second entity according to a reference interval.

[0174] Therefore, by configuring or predefining a reference frequency or reference time, and then using the determined reference frequency or reference time as the basis for parsing the reference interval of the carrier signal reflected by the second entity, when the carrier signal is used as the carrier of the communication frame of the traditional communication service in the communication system, after determining the reference interval of the second entity reflecting the carrier signal, the reference interval can be used to determine the system time resources of the A-IoT in the environmental Internet of Things communication scenario and to achieve alignment of time resources, so that the first entity can normally parse the reflected carrier signal based on the reference interval. Therefore, compared with the related art, the embodiment of the present application can determine the system time resources of the A-IoT in the environmental Internet of Things communication scenario, and achieve alignment with the time resources of the traditional communication service in the communication system.

[0175] In one embodiment, the reference intervals of the reflected carrier signals determined by the first entity and the second entity for the same carrier signal are the same. If the first entity selects a reference frequency to determine the reference interval, the second entity also selects a reference frequency to determine the reference interval. Thus, after the first entity and the second entity each negotiate a corresponding reference interval, the first entity can normally analyze the reflected carrier signal.

[0176] The following describes an example of time resource alignment in an embodiment of the present application with reference to Figures 3 to 9.

[0177] As shown in Figure 3 and Figure 9, for example, the frequency of the first entity transmitting CW is F1; the frequency of the second entity reflecting CW is F2; ​​the frequency offset between F2 and F1 is F3, then F2 = F1 + F3 or F2 = F1 - F3. Among them, F1 can be configured or predefined, or F1 can be the calibration signal duration T cal ,1 calculated, such as F1=X / T cal,1 , X is an arbitrary number. Among them, F3 can be configured or predefined, or F3 can be the calibration signal duration Tcal,3 Calculated, such as F3 = X / T cal,3 , X is an arbitrary number. When F3 is not configured or does not exist, F2 = F1, that is, the frequency of the reflected CW is the same as the frequency of the transmitted CW. Among them, X can be configured or predefined. Therefore, when configured or predefined, F1 is configured at the first entity, so that after the second entity receives the carrier signal of the first entity, it can determine the frequency of the reflected carrier signal based on F1 and the configured F3. After determining the frequency of the reflected carrier signal, the reference interval can be set based on the reference frequency or reference time according to actual needs.

[0178] When the reference frequency is selected to determine the reference interval, as in Example 1, the reference frequency is one of F1, F2, and F3. In this case, the reference interval T of the reflected CW is r =Y / F1 or T r =Y / F2 or T r =Y / F3, where Y is an arbitrary number.

[0179] When selecting the reference time to determine the reference interval, as in Example 2, the reference interval of the reflected CW Z is an arbitrary number, is the OFDM symbol duration, l is the OFDM symbol index, is the number of OFDM symbol samples without CP, is the number of CP samples (in one embodiment, the CP includes a first-type normal cyclic prefix, a second-type normal cyclic prefix, and an extended cyclic prefix, wherein the first-type cyclic prefix is ​​located at l=0 or l=7·2 μ , the second type of cyclic prefix is ​​located at l≠0and l≠7·2 μ , and the first type cyclic prefix is ​​16κ longer than the second type cyclic prefix, κ=64), Tc represents the time unit, in one embodiment, T c =1 / (Δf max ·N f ), Δf max =480·10 3 Hz, N f =4096, Δf represents the subcarrier spacing, μ represents the subcarrier spacing adjustment factor. In one embodiment, Δf=2 μ 15kHz.

[0180] When selecting the reference time to determine the reference interval, as in Example 3, the reference interval of the reflected CW Z is an arbitrary number, is the slot duration, and μ represents the subcarrier spacing adjustment factor.

[0181] When the reference time is selected to determine the reference interval, as in Example 4, the reference interval T of the reflected CW r =Z·T sf , Z is an arbitrary number, T sf is the subframe duration.

[0182] When the reference time is selected to determine the reference interval, as in Example 5, the reference interval T of the reflected CW r =Z·T f , Z is an arbitrary number, T f The duration of the wireless frame.

[0183] Among them, μ can be configured or predefined. Using the predefined method can also be called the reference subcarrier spacing μ ref Where Y can be configured or predefined. Where Z can be configured or predefined.

[0184] For Example 2, as shown in FIG5a, there are several reference intervals to align OFDM symbols; at this time, referring to FIG5a, but Reference interval alignment The delimiter or dummy character has a duration of zero. but Reference interval alignment The separator or pseudo character duration is The delimiter or dummy bit may be located at the front end or the back end of the reference interval. No signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit.

[0185] For Example 2, as shown in FIG5b, there are several OFDM symbol alignment reference intervals; in this case, as shown in FIG5b, but OFDM symbols are aligned to T r , the separator or pseudo bit duration is The delimiter or dummy bit may be located at the front or back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit. In other embodiments, for Example 2, OFDM symbols are aligned to T r , the delimiter or pseudo bit duration is zero.

[0186] For Example 3, as shown in FIG6a, there are several reference interval alignment time slots; at this time, as shown in FIG6a, but Reference interval alignment The separator or pseudo character duration is The delimiter or dummy bit may be located at the front or back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit. but Reference interval alignment The delimiter or dummy character has a duration of zero.

[0187] For Example 3, as shown in FIG6b , there are several time slot alignment reference intervals; in this case, as shown in FIG6b , but Time slot alignment T r , the separator or pseudo bit duration is The delimiter or dummy bit may be located at the front or back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit. but Time slot alignment T r , the delimiter or pseudo bit duration is zero.

[0188] For Example 4, as shown in FIG7a, there are several reference interval aligned subframes; at this time, as shown in FIG7a, T sf modT r ≠0, then floor(T sf / T r ) reference intervals aligned to T sf , the separator or false position duration is T sf -floor(T sf / T r )·T r , the delimiter or dummy bit may be located at the front or the back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit. sf modT r =0, then T sf / T r Reference interval alignment T sf , the delimiter or pseudo bit duration is zero.

[0189] For Example 4, as shown in FIG7b , there are several subframe alignment reference intervals; in this case, as shown in FIG7b , T r modT sf ≠0, then floor(T r / T sf ) subframes aligned T r , the separator or false position duration is T r -floor(T r / T sf )·T sf, the delimiter or dummy bit may be located at the front or the back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit. r modT sf =0, then T r / T sf Subframe alignment T r , the delimiter or pseudo bit duration is zero.

[0190] For Example 5, as shown in FIG8a, there are several reference interval alignment radio frames; in this case, as shown in FIG8a, T f modT r ≠0, then floor(T f / T r ) reference intervals aligned to T f , the separator or false position duration is T f -floor(T f / T r )·T r , the delimiter or dummy bit may be located at the front or back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit. In some embodiments, T f modT r =0, then T f / T r Reference interval alignment T f , the delimiter or pseudo bit duration is zero.

[0191] For Example 5, as shown in FIG8b , there are several radio frame alignment reference intervals; in this case, as shown in FIG8b , T r modT f ≠0, then floor(T r / T f ) wireless frames aligned to T r , the separator or false position duration is T r -floor(T r / T f )·T f , the delimiter or dummy bit may be located at the front or the back of the reference interval, and no signal is transmitted or received in the time resource corresponding to the delimiter or dummy bit. r modT f =0, then T r / T f Radio frames are aligned to T r , the delimiter or pseudo bit duration is zero.

[0192] In one embodiment, for Examples 1 to 5 above, the first entity includes at least one of the following: a network node (e.g., a base station), a relay node (e.g., an IAB, a repeater, or a terminal node with a relay function), an auxiliary node (e.g., an IAB, a repeater, or a terminal node with a relay function), a terminal node (e.g., a user equipment), an RRC layer, an RLC layer, a MAC layer, and a PHY layer. The second entity includes at least one of the following: a relay node, an auxiliary node, a terminal node, and an A-IoT device.

[0193] It can be understood that a network device provided according to the third aspect of an embodiment of the present application includes: a memory, a processor, and a computer program stored in the memory and runnable on the processor, and when the processor executes the computer program, it implements a signal processing method as described in any one of the first or second aspects above.

[0194] It is understood that, as shown in FIG10 , in a third aspect, an embodiment of the present application further provides a network device, including:

[0195] at least one processor 101;

[0196] At least one memory 102 is used to store at least one program, and when the at least one program is executed by at least one processor 101, the signal processing method of any one of the first aspect or the second aspect is implemented.

[0197] The memory 102 is a non-transient network system that can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory 102 may include a high-speed random access memory and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory 102 may include a memory 102 remotely located relative to the processor 101, and these remote memories 102 may be connected to the processor 101 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0198] The memory 102 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 102 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 102 and is called by the processor 101 to execute the methods of the embodiments of this application.

[0199] The processor 101 can be implemented using a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application.

[0200] In some embodiments, the network device further comprises:

[0201] Input / output interface, used to realize information input and output;

[0202] Communication interface, used to realize communication interaction between this device and other devices, which can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, Wi-Fi, Bluetooth, etc.);

[0203] A bus that transmits information between various components of the device (e.g., processor 101, memory 102, input / output interfaces, and communication interfaces);

[0204] The processor 101 , the memory 102 , the input / output interface and the communication interface can be communicatively connected to each other within the device via a bus.

[0205] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium storing computer-executable instructions, which are used to execute the signal processing method of any one of the first aspect or the second aspect above.

[0206] In a fifth aspect, an embodiment of the present application further provides a computer program product, comprising a computer program or computer instructions, which are stored in a computer-readable storage medium, a processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device executes the signal processing method of any one of the first or second aspects above.

[0207] In an embodiment of the present application, a reference frequency or reference time is determined by configuration or predefinition, and then the determined reference frequency or reference time is used as the basis for the reference interval of the carrier signal reflected to the first entity. When the carrier signal is used as the carrier of the communication frame of the traditional communication service in the communication system, after determining the reference interval for reflecting the carrier signal, the reference interval can be used to determine the system time resources of A-IoT in the environmental Internet of Things communication scenario and to achieve alignment of time resources, so that the first entity can normally parse the reflected carrier signal based on the reference interval. Therefore, compared with the related art, the embodiment of the present application can determine the system time resources of A-IoT in the environmental Internet of Things communication scenario, and achieve alignment with the time resources of the traditional communication service in the communication system.

[0208] The system architecture and application scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of the system architecture and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

[0209] Those skilled in the art will appreciate that all or some of the steps and systems in the method disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, and the computer-readable medium can include computer storage media (or non-transitory media) and communication media (or temporary media). As known to those skilled in the art, the term computer storage media is included in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data) and is volatile and non-volatile, removable, and non-removable. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory, or other memory technology, CD-ROM, digital versatile disks (DVD), or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage, or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically embodies computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0210] The above description of some embodiments of the present application with reference to the accompanying drawings does not limit the scope of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present application shall be within the scope of the present application.

Claims

1. A signal processing method, comprising: receiving a carrier signal sent by the first entity; Determine the reference frequency or reference time by configuration or predefinition; A reference interval for reflecting the carrier signal is determined according to the reference frequency or the reference time.

2. The method according to claim 1, wherein The first entity includes at least one of the following: Network nodes; Relay nodes; Auxiliary nodes; terminal nodes; Radio resource control layer; Radio link control layer; Media access control layer; Physical layer.

3. The method according to claim 1, wherein The method is applied to a second entity, the second entity comprising at least one of the following: Relay nodes; Auxiliary nodes; terminal nodes; Environmental IoT devices.

4. The method according to claim 1, wherein The reference frequency is the frequency of the carrier signal, which is determined by configuration or predefinition, or determined according to the duration of the calibration signal. The reference interval is Y times the inverse of the frequency of the carrier signal, where Y is any value greater than 0.

5. The method according to claim 1, wherein The reference frequency is the frequency of the reflected carrier signal, which is calculated based on the frequency of the carrier signal. The reference interval is Y times the inverse of the frequency of the reflected carrier signal, where Y is any value greater than 0.

6. The method according to claim 1, wherein The reference frequency is the frequency offset between the frequency of the reflected carrier signal and the frequency of the carrier signal. The frequency offset is determined by configuration or predefinition, or determined according to the duration of the calibration signal. The reference interval is Y times the inverse of the frequency offset, where Y is any value greater than 0.

7. The method according to claim 1, wherein The reference time is the duration of an OFDM symbol, and the reference interval is Z times the duration of the OFDM symbol, where Z is any value greater than 0.

8. The method according to claim 7, wherein: A delimiter and a plurality of the reference intervals are aligned with boundaries of the OFDM symbols.

9. The method according to claim 7, wherein: Several reference intervals are aligned with boundaries of the OFDM symbols.

10. The method according to claim 7, wherein: A plurality of the OFDM symbols are aligned with a delimiter and a boundary of the reference interval.

11. The method according to claim 7, wherein: Several of the OFDM symbols are aligned with a boundary of the reference interval.

12. The method according to claim 1, wherein The reference time is the duration of the time slot, and the reference interval is Z times the duration of the time slot, where Z is any value greater than 0.

13. The method according to claim 12, wherein: A delimiter and a plurality of the reference intervals are aligned with the boundaries of the time slots.

14. The method according to claim 12, wherein: Several of the reference intervals are aligned with boundaries of the time slots.

15. The method according to claim 12, wherein: A plurality of the time slots are aligned with a delimiter and a boundary of the reference interval.

16. The method according to claim 12, wherein: Several of the time slots are aligned with boundaries of the reference interval.

17. The method according to claim 1, wherein The reference time is the duration of a subframe, and the reference interval is Z times the duration of the subframe, where Z is any value greater than 0.

18. The method according to claim 17, wherein: A delimiter and a plurality of the reference intervals are aligned with the boundary of the subframe.

19. The method according to claim 17, wherein Several of the reference intervals are aligned with boundaries of the subframe.

20. The method according to claim 17, wherein A plurality of the subframes are aligned with a delimiter and a boundary of the reference interval.

21. The method according to claim 17, wherein Several of the subframes are aligned with boundaries of the reference interval.

22. The method according to claim 1, wherein The reference time is the duration of a radio frame, and the reference interval is Z times the duration of the radio frame, where Z is any value greater than 0.

23. The method according to claim 22, wherein A delimiter and a plurality of the reference intervals are aligned with the boundary of the radio frame.

24. The method according to claim 22, wherein Several reference intervals are aligned with boundaries of the radio frame.

25. The method according to claim 22, wherein A plurality of the radio frames are aligned with a delimiter and a boundary of the reference interval.

26. The method according to claim 22, wherein A plurality of the radio frames are aligned with a boundary of the reference interval.

27. The method of claim 8, 10, 13, 15, 18, 20, 23 or 25, wherein In the time resource corresponding to the delimiter, no signal is transmitted or received.

28. A signal processing method, comprising: sending a carrier signal to the second entity; Determine the reference frequency or reference time by configuration or predefinition; determining, according to the reference frequency or the reference time, a reference interval for the second entity to reflect the carrier signal; The carrier signal reflected by the second entity is received according to the reference interval.

29. A network device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the signal processing method according to any one of claims 1 to 28 is implemented.

30. A computer-readable storage medium storing computer-executable instructions, wherein: The computer-executable instructions are used to execute the signal processing method according to any one of claims 1 to 28.

31. A computer program product comprising a computer program or computer instructions, wherein: The computer program or the computer instructions are stored in a computer-readable storage medium, the processor of the network device reads the computer program or the computer instructions from the computer-readable storage medium, and the processor executes the computer program or the computer instructions, so that the network device performs the signal processing method according to any one of claims 1 to 28.

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