Method and apparatus for processing information, and communication system

Abstract

Embodiments of the present application provide a method and apparatus for processing information, and a communication system. The method for processing information comprises: a terminal device receives a first signal sent by a network device, the first signal at least being used for time synchronization of the terminal device; and the terminal device further receives a first waveform, the first waveform being used for backscattering of the terminal device.

Description

Information processing method, device and communication system Technical Field

[0001] The embodiments of the present application relate to the field of communication technologies. Background Art

[0002] Digital mobile communications, evolving from 2G, 3G, 4G, to the current 5G, have effectively met people's needs for voice communications, digital mobile communications, and mobile broadband internet access. However, with social and economic development, the demand for IoT communications has gradually emerged. To meet these demands, 3GPP has defined a series of IoT technology standards, including machine-type communication (MTC), NB-IoT (Narrow Band IoT), and RedCap (Reduced Capability UE).

[0003] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

[0004] Summary of the Invention

[0005] The inventors discovered that while existing IoT technology standards meet the requirements for low cost, low power consumption, and large connectivity for IoT terminal devices, they cannot meet IoT communication requirements in many scenarios. For example, these standards cannot meet the maintenance requirements of IoT terminal devices in extreme operating environments or the need for extremely small and low-cost terminal devices. The challenge is to support these IoT terminal device requirements within the 3GPP cellular mobile communication system.

[0006] In response to at least one of the above problems or other similar problems, embodiments of the present application provide an information processing method, apparatus, and communication system.

[0007] According to one aspect of an embodiment of the present application, an information processing apparatus is provided, which is configured in a terminal device, and the apparatus includes: a receiving unit, which receives a first signal sent by a network device, and the first signal is used at least for time synchronization of the terminal device; the receiving unit also receives a first waveform, and the first waveform is used for backscattering of the terminal device.

[0008] According to another aspect of an embodiment of the present application, an information processing method is provided, which is applied to a terminal device, and the method includes: the terminal device receives a first signal sent by a network device, and the first signal is used at least for time synchronization of the terminal device; the terminal device also receives a first waveform, and the first waveform is used for backscattering of the terminal device.

[0009] According to another aspect of an embodiment of the present application, there is provided an information processing apparatus configured in a network device, the apparatus comprising: a sending unit, which sends a first signal to a terminal device, wherein the first signal is at least used for time synchronization of the terminal device.

[0010] According to another aspect of an embodiment of the present application, an information processing method is provided, which is applied to a network device. The method includes: the network device sends a first signal to a terminal device, and the first signal is used at least for time synchronization of the terminal device.

[0011] According to another aspect of an embodiment of the present application, a communication system is provided, which includes a network device and a terminal device, wherein the network device sends a first signal to the terminal device, and the first signal is used at least for time synchronization of the terminal device; the terminal device receives the first signal sent by the network device, and the terminal device also receives a first waveform, and the first waveform is used for backscattering of the terminal device.

[0012] One of the beneficial effects of the embodiments of the present application is that: the terminal device receives at least a first signal for time synchronization from the network device, thereby enabling the terminal device to accurately perform time synchronization, which helps the terminal device to access the communication network or transmit information in the communication network through the first waveform received through backscattering.

[0013] With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0014] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0015] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

[0017] FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0018] FIG2 is a schematic diagram of an information processing method according to an embodiment of the present application;

[0019] FIG3 is a schematic diagram of time-frequency resources of a first signal according to an embodiment of the present application;

[0020] FIG4 is another schematic diagram of time-frequency resources of the first signal according to an embodiment of the present application;

[0021] FIG5 is another schematic diagram of time-frequency resources of the first signal according to an embodiment of the present application;

[0022] FIG6 is another schematic diagram of time-frequency resources of the first signal according to an embodiment of the present application;

[0023] FIG7 is a schematic diagram of time-frequency resources of a first signal and first information according to an embodiment of the present application;

[0024] FIG8 is another schematic diagram of time-frequency resources of the first signal and the first information according to an embodiment of the present application;

[0025] FIG9 is another schematic diagram of time-frequency resources of the first signal and the first information according to an embodiment of the present application;

[0026] FIG10 is another schematic diagram of time-frequency resources of the first signal and the first information according to an embodiment of the present application;

[0027] FIG11 is another schematic diagram of time-frequency resources of the first signal and the first information according to an embodiment of the present application;

[0028] FIG12 is another schematic diagram of time-frequency resources of the first signal and the first information according to an embodiment of the present application;

[0029] FIG13 is a schematic diagram of an information processing device according to an embodiment of the present application;

[0030] FIG14 is a schematic diagram of an information processing method according to an embodiment of the present application;

[0031] FIG15 is a schematic diagram of an information processing device according to an embodiment of the present application;

[0032] FIG16 is a schematic diagram of a network device according to an embodiment of the present application;

[0033] FIG17 is a schematic diagram of a terminal device according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0035] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0036] In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0037] In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A, LTE-Advanced), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), etc.

[0038] Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), 6G, etc., and / or other communication protocols currently known or to be developed in the future.

[0039] In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), transmission point (TP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

[0040] Base stations may include, but are not limited to, NodeB (NB), evolved NodeB (eNodeB or eNB), 5G base stations (gNB), IAB hosts, and the like. They may also include remote radio heads (RRHs), remote radio units (RRUs), relays, or low-power nodes (e.g., femto, pico, etc.). The term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographic area. The term "cell" may refer to a base station and / or its coverage area, depending on the context in which the term is used.

[0041] In the embodiments of the present application, the term "user equipment" (UE) refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be referred to as "terminal equipment" (TE). Terminal equipment may be fixed or mobile, and may also be referred to as a mobile station (MS), terminal, user, subscriber station (SS), access terminal (AT), station, mobile terminal (MT), etc.

[0042] Terminal devices may include, but are not limited to, the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smartphones, smart watches, digital cameras, etc.

[0043] For another example, in scenarios such as the Internet of Things (IoT), terminal devices can also be machines or devices for monitoring or measurement, including but not limited to: tag-type terminal devices (Ambient IoT devices, AIOT devices), machine-type communication (MTC) terminals, vehicle-mounted communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and the like.

[0044] In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

[0045] In addition, uplink signals may include uplink data signals and / or uplink control signals and / or PRACH and / or SRS (sounding reference signal), etc., and may also be referred to as uplink transmission (UL transmission), uplink information, or uplink channels. Sending / receiving uplink transmission on an uplink resource may be understood as sending / receiving the uplink transmission using the uplink resource.

[0046] Downlink signals may include downlink data signals and / or downlink control signals and / or synchronization signals (SS, such as PSS / SSS) and / or broadcast channels (PBCH) and / or SSBs (SS / PBCH blocks, including PSS, SSS, and PBCH and their DMRS) and / or CSI-RS, etc., and may also be referred to as downlink transmissions (DL transmissions) or downlink information or downlink channels. Sending / receiving downlink transmissions on downlink resources may be understood as sending / receiving the downlink transmissions using the downlink resources.

[0047] In the embodiment of the present application, the high-layer signaling may be, for example, radio resource control (RRC) signaling; RRC signaling may include, for example, an RRC message, such as a broadcast / public RRC message / signaling (e.g., a master information block (MIB), system information), a dedicated RRC message / signaling; or an RRC information element (RRC information element, RRC IE); or an information field included in an RRC message or an RRC information element (or an information field included in an information field). The high-layer signaling may also be, for example, a medium access control layer (MAC) signaling; or a MAC control element (MAC control element, MAC CE). However, the present application is not limited thereto.

[0048] In the embodiments of the present application, a plurality refers to at least two, or two or more.

[0049] In the embodiments of the present application, predefined refers to what is specified in the protocol or determined according to the rules specified in the protocol, and no additional configuration is required. Configuration / instruction refers to the direct or indirect configuration / instruction of the network device through high-layer signaling and / or physical layer signaling. Configuration / instruction can be achieved by introducing high-layer parameters in high-layer signaling, and high-layer parameters refer to information fields and / or information elements / information units / information elements (IEs) in high-layer signaling. Physical layer signaling refers to, for example, control information (DCI) carried by the physical downlink control channel or information carried by the sequence, but is not limited thereto.

[0050] For ease of description, the following description will be made using a base station as an example of an access network device. In the following description, "if ...", "under ..." and "when ..." can be used interchangeably without causing confusion.

[0051] The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

[0052] Figure 1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation using an AIOT device and a network device as an example. Figure 1 illustrates only one AIOT device and one network device as an example, but the present application is not limited thereto, and the communication system may also include other numbers of AIOT devices and network devices.

[0053] As shown in FIG1( a ), the communication system 100 includes a network device 101 and an AIOT device 102. The network device 101 can communicate directly with the AIOT device 102, for example, directly sending a signal to the AIOT device 102 or directly receiving a signal from the AIOT device 102.

[0054] As shown in Figure 1(b), communication system 100 includes network device 101, AIOT device 102, and intermediate node 103. Network device 101 can communicate with AIOT device 102 via intermediate node 103. For example, intermediate node 103 can be used to send signals to AIOT device 102 or receive signals from AIOT device 102. In this topology, intermediate nodes can be relays, IAB nodes, UEs, repeaters, and other devices that can implement ambient IoT functions.

[0055] As shown in Figure 1(c), communication system 100 includes a network device 101, an AIOT device 102, and an auxiliary node 104. With the assistance of auxiliary node 104, network device 101 can send signals to or receive signals from AIOT device 102. In this topology, the auxiliary node can be a relay, IAB, UE, repeater, or other device capable of implementing ambient IoT functions.

[0056] In the embodiment of the present application, the network device 101 sends a signal / information / configuration to the AIOT device 102, or the AIOT device 102 receives a signal / information / configuration from the network device 101. The signal / information / configuration may be sent directly by the network device 101 to the AIOT device 102 and received by the AIOT device 102, or sent by the network device 101 to the AIOT device 102 via the intermediate node 103 and received by the AIOT device 102, or sent by the network device 101 with the help of the auxiliary node 104 and received by the AIOT device 102, or sent by the network device 101 to the AIOT device 102 via other methods and received by the AIOT device 102. Unless otherwise specified, the present invention is not limited to this.

[0057] In the embodiment of the present application, AIOT device 102 sends signals / information to network device 101, or network device 101 receives signals / information from AIOT device 102. Such signals / information may be sent by AIOT device 102 and received directly by network device 101, or sent by AIOT device 102 and received by network device 101 via intermediate node 103, or sent by AIOT device 102 and received by network device 101 with the help of auxiliary node 104, or sent by AIOT device 102 and received by network device 101 via other methods. Unless otherwise specified, the present invention is not limited to such methods.

[0058] RFID (Radio Frequency Identification) technology, also known as wireless radio frequency identification, is a widely used communication technology that can identify specific targets and read and write related data in a contactless manner. The advantages of RFID systems are low tag cost and small size, making them frequently used in various application scenarios such as logistics information collection, retail, libraries, and identity verification. However, a disadvantage of RFID systems is the limited read range of RFID tags (based on the communication range of wireless signals). With manual handheld tag readers and writers, labor costs can become a major expense. Using dedicated RFID gateways to read and manage RFID tags also incurs high deployment costs. Furthermore, the simple logical architecture of RFID systems prevents effective coordination with interference from radio wave transmissions, resulting in generally low system capacity and spectrum efficiency.

[0059] Compared to RFID systems, support for tag-based terminal devices in 3GPP communication systems allows the reuse of existing base station deployments and supports industry applications based on these devices through existing cellular mobile communication networks, effectively reducing deployment and usage costs. 3GPP communication systems provide reliable authentication, network coordination, and accurate and stable terminal device management mechanisms. These mechanisms can also optimize networks, improve system capacity, and increase spectrum efficiency.

[0060] As a new type of IoT terminal in the communication system, tag-type terminal devices are severely cost-constrained. The hardware capabilities of the devices are significantly weaker than those of ordinary mobile terminals and other IoT-type devices supported by existing cellular mobile communication systems. For example, the signal processing capabilities of tag-type terminal devices are very limited, the crystal oscillators they carry may have large errors, and their ability to obtain accurate time and frequency synchronization is relatively poor. The related designs for synchronization signals and / or broadcast information when multiple network devices are networked in existing communication systems cannot be reused. Therefore, when tag-type terminals access the communication network, how to design synchronization signals and / or broadcast information for multiple network devices becomes an urgent problem to be solved.

[0061] In response to at least one of the above problems, embodiments of the present application provide an information processing method, apparatus, and communication system.

[0062] Embodiments of the first aspect

[0063] The present application embodiment provides an information processing method, which is described from the perspective of a terminal device. FIG2 is a schematic diagram of the information processing method of the present application embodiment. As shown in FIG2 , the method includes:

[0064] 201. A terminal device receives a first signal sent by a network device, where the first signal is used at least for time synchronization of the terminal device.

[0065] 202. A terminal device receives a first waveform, where the first waveform is used for backscattering of the terminal device.

[0066] According to the above embodiment, the terminal device receives at least a first signal for time synchronization from the network device, thereby enabling the terminal device to accurately perform time synchronization, which helps the terminal device to access the communication network or transmit information in the communication network through the first waveform received through backscattering.

[0067] For example, the terminal device may be a tag-type terminal device, which can send signals or information on time-frequency resources by backscattering a first waveform. Due to the low power consumption and low cost of the terminal device, the terminal device is not capable of supporting high-precision time-frequency synchronization. The terminal device receives a first signal sent by a network device for at least time synchronization of this type of device, thereby enabling the terminal device to accurately perform time synchronization. This helps the terminal device access a communication network or transmit information in a communication network through the first waveform received by backscattering, thereby meeting the demand for accessing tag-type terminal devices in a cellular mobile communication system.

[0068] It is worth noting that FIG2 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG2 above.

[0069] In some embodiments, the first signal is used at least for time synchronization of the terminal device, and the time synchronization includes, for example, frame synchronization, subframe synchronization, time slot synchronization, symbol synchronization, or sampling point synchronization, etc. The present application is not limited thereto, and time synchronization may also include synchronization on other time units.

[0070] In some embodiments, the first signal may be related to part or all of the information of the identifier of the first cell. Thus, the first signal can indicate to the terminal device part or all of the information of the identifier of the first cell corresponding to the first signal.

[0071] In some embodiments, the first cell may include a cell where the network device is located or a corresponding cell. The network device may be a network device that communicates with the terminal device, for example, a network device that sends the first signal to the terminal device.

[0072] For the cell where the network device is located or the cell to which the network device corresponds, 1008 unique physical-layer cell identifiers (PCIs) can be defined, as shown in the following formula (1):

[0073] in,

[0074] In some embodiments, the number of first cell identifiers may be equal to the number of physical layer cell identifiers of the first cell. For example, the first cell identifier corresponds to the physical layer cell identifier of the first cell. For example, the first cell identifier corresponds to or is equal to the physical layer cell identifier of the first cell.

[0075] In some embodiments, the number of the first cell identifiers may also be less than the number of the physical layer cell identifiers of the first cell. For example, if the number of the first cell identifiers is K, then the correspondence between the first cell identifier and the PCI may be as shown in the following formula (2):

[0076] In the above formula (2), is the identifier of the first cell, is the PCI, K is the number of identifiers of the first cell, and Mod is a remainder operator. The present application is not limited thereto, and the identifier of the first cell and the physical layer cell identifier of the first cell may also have other corresponding relationships.

[0077] In some embodiments, the first signal may be related to part or all of the information about the identifier of the first cell in various ways. For example, the waveform of the first signal may be related to part or all of the information about the identifier of the first cell; for another example, the position of the first signal on the time axis (also referred to as the time domain axis) and / or the frequency axis (also referred to as the frequency domain axis) may be related to part or all of the information about the identifier of the first cell; for another example, the waveform of the first signal and the position of the first signal on the time axis and / or the frequency axis may be related to part or all of the information about the identifier of the first cell.

[0078] The waveform of the first signal may be equivalently replaced by a sequence of the first signal, a pattern of the first signal, etc.

[0079] Take the case where the waveform of the first signal is related to part or all of the information of the identifier of the first cell as an example:

[0080] The first signal may have multiple waveforms, and the terminal device may determine part or all of the information of the identifier of the first cell based on the waveform of the received first signal.

[0081] For example, K first cell identifiers correspond to K different first signal waveforms. Thus, the terminal device can determine all information about the first cell identifier based on the waveform of the received first signal.

[0082] For another example, the identifier of the first cell is represented by an X-bit number, where some bits correspond to different waveforms of the first signal. For example, the lower 2 bits of the identifier of the first cell can correspond to 4 different waveforms of the first signal. Thus, the terminal device can determine the lower 2 bits of information of the identifier of the first cell based on the waveform of the received first signal. Other bit information about the identifier of the first cell can be indicated by the position of the first signal on the time axis and / or frequency domain axis, or can be carried in the first information described later.

[0083] In some embodiments, the correspondence between the waveform of the first signal and part or all of the information of the identifier of the first cell may be predefined.

[0084] Taking the case where the position of the first signal on the time axis and / or frequency axis is related to part or all of the information of the identifier of the first cell as an example:

[0085] For example, the K first cell identifiers correspond to K different positions of the first signal on the time axis, or correspond to K different positions of the first signal on the frequency axis, or correspond to K different positions of the first signal on the time axis and the frequency axis. Thus, the terminal device can determine all information about the first cell identifier based on the position of the received first signal.

[0086] For another example, the identifier of the first cell is represented by an X-bit number, where some bits correspond to different positions of the first signal on the time axis and / or frequency axis. For example, the upper 2 bits of the identifier of the first cell may correspond to 4 different positions of the first signal on the time axis. Thus, the terminal device can determine the information of the upper 2 bits of the identifier of the first cell based on the position on the time axis of the received first signal. Other bit information about the identifier of the first cell can be indicated by the waveform of the first signal, or can be carried in the first information described later.

[0087] In some embodiments, the correspondence between the position of the first signal on the time axis and / or frequency axis and part or all of the information of the identifier of the first cell may be predefined.

[0088] In some embodiments, the first signal may also be unrelated to part or all of the information about the identity of the first cell.

[0089] For example, multiple first signals may have the same waveform; or, multiple first signals may be sent at the same position on the time axis and / or frequency axis; or, the first signal may have multiple waveforms, but the correspondence between the waveform of the first signal and the identifier of the first cell is not predefined; or, the first signal may be sent at different positions on the time axis and / or frequency axis, but the correspondence between the position of the first signal and the identifier of the first cell is not predefined.

[0090] In this case, the identifier of the first cell may be carried in the first information described later.

[0091] The time-frequency resources of the first signal are exemplarily described below.

[0092] In some embodiments, the first signal may be received on one or more time-frequency resources.

[0093] Taking the first signal being received on a time-frequency resource as an example, the terminal device can receive the first signal on a time domain resource (also called a time resource) in a frequency domain resource unit (also called a frequency resource unit, for example, a channel, etc.).

[0094] Figure 3 is a schematic diagram of the time-frequency resources of the first signal according to an embodiment of the present application. As shown in Figure 3, a terminal device can receive the first signal on a time domain resource within a frequency domain resource unit. The first signal can correspond to K first cells, each of which uses the same waveform of the first signal. The terminal device can perform time synchronization based on the first signal and then determine the network device to be connected using the first information described below.

[0095] Taking the example of a first signal being received on multiple time-frequency resources, the first signal can be received on multiple time domain resources of a frequency domain resource unit; or the first signal can be received on multiple frequency domain resource units of a time domain resource; or the first signal can be received on multiple frequency domain resource units and multiple time domain resources.

[0096] For example, the terminal device may receive the first signal on multiple time domain resources in a frequency domain resource unit. The position of the time domain resource on the time axis within a time unit may be fixed. For example, the position may be related to part or all of the information of the first cell identifier. The time unit may be a frame, subframe, time slot, symbol, or sampling point, etc.

[0097] Figure 4 is another schematic diagram of the time-frequency resources of the first signal of an embodiment of the present application. As shown in Figure 4, the terminal device receives the first signal on K time domain resources in a frequency domain resource unit. The positions of these K time domain resources on the time axis within a time unit are fixed. For example, time domain resource #1 is always the first time slot in a frame. The positions of these K time domain resources on the time axis within a time unit can be related to part or all of the information of the identifier of the first cell. For example, within a frame, the first signal from the first cell identified as 1 is sent on time domain resource #1.

[0098] The terminal device detects the first signal in these K time domain resources and selects a first cell (for example, selecting the first signal with the largest detection result level value) according to the implementation algorithm of the terminal device, and performs subsequent processing based on the selection result, for example, receiving the first information of the selected first cell.

[0099] For another example, the terminal device may receive the first signal in multiple frequency domain resource units on a time domain resource. The positions of the multiple frequency domain resource units on the frequency axis may be fixed, for example, the positions may be related to part or all of the information of the identifier of the first cell.

[0100] Figure 5 is another schematic diagram of the time-frequency resources of the first signal in an embodiment of the present application. As shown in Figure 5, the terminal device receives the first signal in K frequency domain resource units on a time domain resource. The position of these K frequency domain resource units on the frequency axis within a frequency unit is related to part or all of the information of the identifier of the first cell. For example, the first signal from the first cell identified as 1 is sent on frequency domain resource unit #1.

[0101] The terminal device detects the first signal in these K frequency domain resource units, and selects a first cell (for example, selecting the first signal with the largest detection result level value) according to the implementation algorithm of the terminal device, and performs subsequent processing based on the selection result, for example, receiving the first information of the selected first cell.

[0102] For another example, a terminal device may receive a first signal on multiple frequency domain resource units and multiple time domain resources. The first positions of the multiple time domain resources on the time axis may be fixed within a time unit, and the second positions of the multiple frequency domain resource units on the frequency axis may be fixed. For example, the first position and the second position may each be related to partial or full information about the identifier of the first cell.

[0103] Figure 6 is another schematic diagram of the time-frequency resources of the first signal according to an embodiment of the present application. As shown in Figure 6, the terminal device can receive the first signal in K time-domain resource and frequency-domain resource units.

[0104] The number of time domain resources on multiple frequency domain resource units can be the same. This application is not limited to this, and the number of time domain resources on multiple frequency domain resource units can also be different. This application does not limit the first number of these K time-frequency resources on the time axis and the second number on the frequency axis. For example, the first number and the second number can be determined in a predefined manner.

[0105] The first positions of the K time-frequency resources on the time axis and the second positions on the frequency axis can be determined in a manner similar to the positions shown in FIG. 4 and FIG. 5 , and will not be further described here.

[0106] In some embodiments, as shown in FIG2 , the information processing method may further include:

[0107] 203. The terminal device receives first information sent by the network device, where the first information includes configuration information of the network device.

[0108] It is worth noting that FIG2 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted. For example, operation 203 may be executed after operation 201, or before operation 202. Furthermore, other operations may be added or some operations may be removed. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description in FIG2 above.

[0109] In some embodiments, the first information may include at least one of the following: partial or full information of the identification of the first cell; partial or full information of the first time unit sequence number, wherein the first time unit sequence number is the sequence number information of the time unit in which the first signal and / or the first information is located on the time axis.

[0110] For example, the sequence number of the time unit may be a frame number, a subframe number, a time slot number, a symbol number, a sampling point number, or the like.

[0111] In some embodiments, the first information may include partial or full information of the identifier of the first cell. Thus, the first information can indicate partial or full information of the identifier of the first cell corresponding to the first information to the terminal device.

[0112] Taking the example of the first information including partial information of the identifier of the first cell, the identifier of the first cell can be represented by an X-bit number, where part of the bit information can be carried in the first information, and the remaining bit information can be carried by the first signal (for example, the waveform of the first signal or the position of the first signal on the time axis and / or frequency axis can be related to the remaining bit information of the identifier of the first cell).

[0113] In some embodiments, the first information may include part or all of the first time unit sequence number information. Thus, the first information can indicate to the terminal device, through the first information, the sequence number information of the time unit in which the first information and / or the first signal corresponding to the first information is located on the time axis.

[0114] Taking the example that the first information includes part of the information of the first time unit sequence number, the first time unit sequence number can be represented by an H-bit number, where part of the bit information can be carried in the first information, and the remaining bit information can be carried by other signals or information.

[0115] In some embodiments, the terminal device receives the first information on multiple time-frequency resources. For example, the first information may be received on multiple time-domain resources of a frequency-domain resource unit; or the first information may be received on multiple frequency-domain resource units of a time-domain resource; or the first information may be received on multiple frequency-domain resource units and multiple time-domain resources.

[0116] In some embodiments, the position of the first information on the time axis and / or frequency axis can be referenced to the position of the first signal on the time axis and / or frequency axis. Thus, even if the terminal device does not support high-precision time-frequency synchronization, the position of the corresponding first information on the time axis and / or frequency axis can be determined based on the position of the first signal on the time axis and / or frequency axis.

[0117] The following is an exemplary description of the time-frequency resources of the first signal and the first information.

[0118] In some embodiments, the first information corresponds to the first signal on a time axis.

[0119] For example, on the time axis, the time domain resources of the first information can correspond one-to-one with the time domain resources of the first signal, that is, the first information can correspond one-to-one with the first signal. As a result, after receiving the first signal and completing time synchronization, the terminal device can determine the position of the first information corresponding to the first signal on the time axis based on the selected first signal.

[0120] The present application is not limited to this. On the time axis, the time domain resource of the first information and the time domain resource of the first signal may not have a one-to-one correspondence. For example, on the time axis, the first signal is sent on one time domain resource, and multiple first information are sent separately on multiple subsequent time domain resources. That is, multiple first information can share one first signal. After receiving the shared first signal and completing time synchronization, the terminal device receives the first information on the time domain resources corresponding to one or more offset times relative to the first signal.

[0121] In some embodiments, the position of the first information on the time axis may be indicated by at least one of the following parameters:

[0122] A first offset time, where the first offset time may be an offset time of the first information relative to a first signal;

[0123] a second offset time, where the second offset time may be an offset time of the first information relative to the group of first signals; or

[0124] The third offset time may be an offset time of the first information relative to the second offset time.

[0125] As previously described, the position of the first information on the time axis can be referenced to the position of the first signal on the time axis. In this case, the first offset time can be the offset time between the starting point of the first information on the time axis and a reference point of the first signal on the time axis. The reference point can correspond to the starting point and / or ending point of the first signal. For example, the reference point can be the starting point or ending point of the first signal, or a time point or time range determined based on the starting point and / or ending point of the first signal.

[0126] The second offset time may be an offset time between a starting point of a group of first information on the time axis and a reference point of a group of first signals on the time axis. The reference point may correspond to a starting point and / or an ending point of a first signal in the group of first signals on the time axis. The first signal may be any first signal in the group of first signals, for example, the first or last first signal in the group of first signals. The reference point may be the starting point or ending point of the first signal, or a time point or time range determined based on the starting point and / or ending point of the first signal.

[0127] The starting point of a group of first information on the time axis may be the starting point of the first first information in the group of first information on the time axis. The third offset time may be the time offset of each first information relative to the first first information in the group of first information, or the time offset of each first information relative to the previous first information. Therefore, after determining the second offset time, the starting point of each first information is determined based on the second offset time and the third offset time.

[0128] The present application is not limited thereto, and the second offset time may be an offset time between a starting point of a first information on the time axis and a reference point of a group of first signals on the time axis. Thus, the starting point of each first information can be determined based on the second offset time.

[0129] The units of the first offset time, the second offset time, and the third offset time may be sampling points, symbols, time slots, or subframes, etc., and this application does not impose any specific limitation.

[0130] In some embodiments, the position of the first information on the time axis (e.g., the offset time of the first information relative to the first signal on the time axis) may be related to partial or full information about the identifier of the first cell. For example, at least one of the first offset time, the second offset time, and the third offset time is related to partial or full information about the identifier of the first cell. Thus, the terminal device can determine the position of the first information on the time axis based on partial or full information about the identifier of the first cell.

[0131] However, the present application is not limited thereto. The position of the first information on the time axis (e.g., the offset time of the first information relative to the first signal on the time axis) may also be unrelated to part or all of the information about the first cell identifier. For example, the first offset time, the second offset time, and the third offset time may be unrelated to part or all of the information about the first cell identifier. For example, the offset time of the first information relative to its corresponding first signal is fixed, and so on.

[0132] In some embodiments, the first signal may be received on one or more frequency domain resource units, and the first information corresponding to the first signal may be located on the same frequency domain resource unit as the first signal. The present application is not limited thereto, and the first information corresponding to the first signal may also be located on a frequency domain resource unit different from that of the first signal, wherein the frequency domain resource unit where the first signal is located may correspond to the frequency domain resource unit where the first information is located, and the corresponding relationship may be predefined.

[0133] In some embodiments, the offset times of the first information on the multiple frequency-domain resource units relative to the first signal on the time axis may be the same or different.

[0134] The time-frequency resources of the first signal and the first information are exemplarily described below with reference to the accompanying drawings, wherein the blank rectangles in the accompanying drawings represent the time-frequency resources of the first signal, and the hatched rectangles represent the time-frequency resources of the first information.

[0135] Figure 7 is a schematic diagram of time-frequency resources for first signals and first information in an embodiment of the present application. As shown in Figure 7, a terminal device receives K first signals on a time domain resource within a frequency domain resource unit, and then receives first information on time domain resources corresponding to one or more first offset times relative to the K first signals.

[0136] Specifically, the terminal device receives the first signal on a time domain resource in a frequency domain resource unit and also receives the first signal at an offset m relative to the first signal. i The first information is received on K time domain resources corresponding to (i=1…K) time units. The position of the first information on the time axis is related to part or all of the information of the first cell identifier. For example, for the first information from the first cell identified as i, the terminal device receives the first information at a time interval m from the first signal. i The first information is received on a time domain resource of m time units. i The value of can be determined by predefined methods, for example, predefined m1 = x, and also defined a parameter Δ, m i =m1+(i-1)*Δ(i=2...K). The present application is not limited thereto, m i The value can also be in other forms.

[0137] In this case, the terminal device detects the first information in the K time domain resources and selects a first cell (for example, selects the first information with the largest detection result level value) according to the implementation algorithm of the terminal device.

[0138] Figure 8 is another schematic diagram of time-frequency resources for a first signal and first information according to an embodiment of the present application. As shown in Figure 8, a terminal device receives the first signal on multiple time-domain resources within a frequency-domain resource unit, and then receives the first information on a time-domain resource corresponding to a first offset time relative to the first signal.

[0139] Specifically, the terminal device receives the first signal on K time domain resources in a frequency domain resource unit, and then receives the first signal at an offset m relative to the i-th first signal. i The corresponding first information is received on the time domain resource corresponding to (i=1...K) time units. i The values ​​of m can be the same, which is convenient for implementation. i The value of m may also be different. For example, the position of the first information on the time axis and part or all of the information of the identification of the first cell may be unrelated. i Alternatively, the position of the first information on the time axis and part or all of the information of the identifier of the first cell may be related. For example, m i The value of m can also be different. i The value of can be determined in a predefined manner. The specific predefined manner is as described above and will not be elaborated here.

[0140] FIG9 is another schematic diagram of the time-frequency resources of the first signal and the first information in an embodiment of the present application. As shown in FIG9 , on the time axis of a frequency domain resource unit, the terminal device first receives a group of first signals on different time domain resources, and then receives a group of first information on different time domain resources after a second offset time relative to the group of first signals. The terminal device receives the first information on the time domain resources corresponding to one or more third offset times on the time axis relative to the second offset time, and the third offset time is related to part or all of the information of the identifier of the first cell.

[0141] Specifically, on the time axis of a frequency domain resource unit, the terminal device first receives K first signals on different time domain resources, and then receives a group of first information on different time domain resources that are offset by N time units relative to the group of first signals. After the offset of N time units, the terminal device is offset by θ on the time axis. i The first information is received on the time domain resource corresponding to (i=1...K-1) time units. iIt is related to part or all of the information of the first cell identifier. For example, the third offset time corresponding to the first information from the first cell identified as i is θ i Among them, the above θ i The value of can be determined in a predefined way, for example, predefine θ1 = z, and also define a parameter d, θ i =θ1+(i-1)*d(i=2...K). This application is not limited to this, θ i The numerical value of can also be other forms. In addition, the numerical value of N can also be obtained in a predefined manner.

[0142] Figure 10 is another schematic diagram of time-frequency resources for the first signal and first information in an embodiment of the present application. As shown in Figure 10, the terminal device receives the first signal on different frequency domain resource units and receives the corresponding first information on the time domain resource corresponding to the first offset time relative to the received first signal.

[0143] Specifically, the terminal device receives the first signal on K different frequency domain resource units, and then shifts m relative to the received first signal. i The first information corresponding to the first signal is received on the time domain resources corresponding to (i=1…K) time units. i The values ​​of m may be the same or different, and this application does not impose any specific restrictions. For example, the position of the first information on the time axis and part or all of the information of the identifier of the first cell may be unrelated. For example, on different frequency domain resource units, m i Alternatively, the position of the first information on the time axis and part or all of the information of the identifier of the first cell may be related. For example, m i The value of m can also be different. i The value of can be determined in a predefined manner. The specific predefined manner is as described above and will not be elaborated here.

[0144] Figure 11 is another schematic diagram of time-frequency resources for a first signal and first information according to an embodiment of the present application. As shown in Figure 11, a terminal device receives a first signal on multiple frequency domain resource units and / or multiple time domain resources, and receives corresponding first information on a time domain resource corresponding to a first offset time relative to the received first signal.

[0145] Specifically, the terminal device receives a first signal on K different frequency domain resource units and / or time domain resources, and then shifts m relative to the received first signal. i The corresponding first information is received on the time domain resources corresponding to (i=1...K) time units. On different frequency domain resource units and / or time domain resources, the corresponding m iThe values ​​of m may be the same or different, and this application does not impose any restrictions. For example, the position of the first information on the time axis and part or all of the information of the identifier of the first cell may be unrelated. For example, on different frequency domain resource units and / or time domain resources, m i Alternatively, the position of the first information on the time axis and part or all of the information of the identifier of the first cell may be related. For example, m i The value of m can also be different. i The value of can be determined in a predefined manner. The specific predefined manner is as described above and will not be elaborated here.

[0146] Figure 12 is another schematic diagram of time-frequency resources for first signals and first information in an embodiment of the present application. As shown in Figure 12, a terminal device first receives a set of first signals on different frequency domain resource units and / or time domain resources, and then receives a set of first information on a time domain resource that is a second offset time relative to the set of first signals on a frequency domain resource unit. The second offset times corresponding to different frequency domain resource units can be the same or different.

[0147] Within a frequency domain resource unit, a terminal device receives first information on time domain resources corresponding to one or more third offset times on a time axis relative to the second offset time, where the third offset time is related to part or all of the information of the identifier of the first cell. The third offset times corresponding to different frequency domain resource units can be the same or different.

[0148] Specifically, the terminal device first receives K first signals on different frequency domain resource units and / or time domain resources, and then respectively receives N offsets relative to a group of first signals on a frequency domain resource unit. j (j=1...X) time units later, a set of first information is received on different time domain resources. N corresponding to different frequency domain resource units j The numerical values ​​of can be the same or different, and can be determined in a predefined manner, and this application does not impose any specific restrictions on this.

[0149] In a frequency domain resource unit, the terminal device is at an offset time N j After time units, the time axis is shifted by θ i,j The first information is received on the time domain resources corresponding to (i=1…X, j=1…Y-1) time units. Here, within a frequency domain resource unit, θ i,j Related to part or all of the information of the first cell's identifier. i,j The values ​​of can be the same or different. In a frequency domain resource unit, the number of first signals and the number of first information can be the same or different. In addition, the above N jand θ i,j The value of can be determined in a predefined manner.

[0150] In some embodiments, the first waveform received by the terminal device may come from a network device. The present application is not limited thereto, and the first waveform may also come from a third-party device controlled by the network device.

[0151] In some embodiments, the terminal device may send an uplink signal or uplink information by backscattering the first waveform. The uplink signal or uplink information may include but is not limited to an uplink access signal.

[0152] The first waveform may be a carrier wave, a continuous wave, a backscattered / backscattering wave, an uplink wave, etc., but the present invention is not limited thereto.

[0153] In some embodiments, the first waveform includes at least a single-frequency signal with a constant envelope. The present application is not limited thereto. For example, the bandwidth of the first waveform is significantly narrower than the bandwidth of the first signal. For example, the bandwidth of the first waveform is 1 kHz, and the bandwidth of the first signal is 100 kHz, as an example only. In some embodiments, the frequency point of the first waveform includes at least one frequency point in the frequency range corresponding to one or more frequency domain resource units. For example, the frequency point may be the center frequency point of the one or more frequency domain resource units.

[0154] In some embodiments, the one or more frequency domain resource units may be frequency domain resource units used to send the first signal or the first information. This can reduce the frequency domain range that the terminal device needs to support, thereby facilitating low-cost terminal devices.

[0155] In some embodiments, the first waveform may be continuous on the time axis. The present application is not limited thereto, and the first waveform may also be discontinuous on the time axis. For example, the first waveform is sent only when the terminal device needs to send an uplink signal or uplink information.

[0156] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0157] According to the above embodiment, the terminal device receives at least a first signal for time synchronization from the network device, thereby enabling the terminal device to accurately perform time synchronization, which helps the terminal device to access the communication network or transmit information in the communication network through the first waveform received through backscattering.

[0158] Embodiments of the second aspect

[0159] The embodiment of the present application provides an information processing device, which may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device, and the same contents as those in the embodiment of the first aspect will not be repeated here.

[0160] FIG13 is a schematic diagram of an information processing device according to an embodiment of the present application. As shown in FIG13 , the information processing device 1300 includes: a receiving unit 1301 .

[0161] The receiving unit 1301 receives a first signal sent by a network device, where the first signal is used at least for time synchronization of the terminal device; the receiving unit 1301 also receives a first waveform, where the first waveform is used for backscattering of the terminal device.

[0162] In some embodiments, the first signal is related to or unrelated to part or all of the information of the identity of the first cell.

[0163] In some embodiments, the waveform of the first signal is related to part or all of the information of the identification of the first cell; and / or the position of the first signal on the time axis and / or frequency axis is related to part or all of the information of the identification of the first cell.

[0164] In some embodiments, the first cell includes a cell where the network device is located or a cell corresponding to the network device.

[0165] In some embodiments, the number of identifiers of the first cell is less than or equal to the number of physical layer cell identifiers of the first cell.

[0166] In some embodiments, the first signal is received on one or more time-frequency resources.

[0167] In some embodiments, the first signal is received on multiple time domain resources of a frequency domain resource unit; or the first signal is received on multiple frequency domain resource units of a time domain resource; or the first signal is received on multiple frequency domain resource units and multiple time domain resources.

[0168] In some embodiments, the receiving unit 1301 further receives first information sent by the network device, where the first information includes configuration information of the network device.

[0169] In some embodiments, the first information includes at least one of the following: partial or full information of the identification of the first cell; partial or full information of the first time unit sequence number, wherein the first time unit sequence number is the sequence number information of the time unit in which the first signal and / or the first information is located on the time axis.

[0170] In some embodiments, the receiving unit 1301 receives the first information on multiple time-frequency resources.

[0171] In some embodiments, the first information corresponds to the first signal on a time axis.

[0172] In some embodiments, on the time axis, the first information corresponds one-to-one to the first signal; or, multiple first information corresponds to one first signal.

[0173] In some embodiments, the position of the first information on the time axis is related to or unrelated to part or all of the information of the identifier of the first cell.

[0174] In some embodiments, the offset time of the first information relative to the first signal on the time axis is correlated with or uncorrelated with part or all of the information of the identifier of the first cell.

[0175] In some embodiments, the position of the first information on the time axis is indicated by at least one of the following parameters:

[0176] a first offset time, where the first offset time is an offset time of the first information relative to one of the first signals;

[0177] a second offset time, where the second offset time is an offset time of the first information relative to a group of the first signals; or

[0178] A third offset time, where the third offset time is an offset time of the first information relative to the second offset time.

[0179] In some embodiments, the parameter is related to or unrelated to part or all of the information of the identity of the first cell.

[0180] In some embodiments, the first offset time is the offset time of a starting point of the first information on the time axis relative to a starting point or an ending point of the first signal on the time axis; and / or

[0181] The second offset time is the offset time of a starting point of a group of first information on the time axis relative to a starting point or an ending point of a group of first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of first signals on the time axis; and / or

[0182] The second offset time is the offset time of a starting point of the first information on the time axis relative to a starting point or an ending point of a group of the first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of the first signals on the time axis.

[0183] In some embodiments, the first signal is received on one or more frequency domain resource units, and the first information corresponding to the first signal is located on the same or different frequency domain resource units as the first signal.

[0184] In some embodiments, when the first signal and the corresponding first information are located on different frequency domain resource units, the frequency domain resource unit where the first information is located is predefined.

[0185] In some embodiments, the offset times of the first information on the plurality of frequency domain resource units relative to the first signal on the time axis are the same or different.

[0186] In some embodiments, the first waveform includes at least a single-frequency signal with a constant envelope, which is continuous or discontinuous on the time axis; and / or the frequency point of the first waveform includes at least one frequency point in the frequency range corresponding to one or more frequency domain resource units.

[0187] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0188] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The information processing device 1300 may also include other components or modules. For details of these components or modules, reference may be made to related technologies.

[0189] In addition, for the sake of simplicity, FIG13 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0190] According to the above embodiment, the terminal device receives at least a first signal for time synchronization from the network device, thereby enabling the terminal device to accurately perform time synchronization, which helps the terminal device to access the communication network or transmit information in the communication network through the first waveform received through backscattering.

[0191] Embodiments of the third aspect

[0192] The embodiment of the present application provides an information processing method, which is described from the perspective of a network device. The contents that are the same as those in the embodiment of the first aspect are not repeated here.

[0193] FIG14 is a schematic diagram of an information processing method according to an embodiment of the present application. As shown in FIG14 , the method includes:

[0194] 1401. A network device sends a first signal to a terminal device, where the first signal is used at least for time synchronization of the terminal device.

[0195] It is worth noting that FIG14 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG14 above.

[0196] In some embodiments, the first signal is related to or unrelated to part or all of the information of the identity of the first cell.

[0197] In some embodiments, the waveform of the first signal is related to part or all of the information of the identification of the first cell; and / or the position of the first signal on the time axis and / or frequency axis is related to part or all of the information of the identification of the first cell.

[0198] In some embodiments, the first cell includes a cell where the network device is located or a cell corresponding to the network device.

[0199] In some embodiments, the number of identifiers of the first cell is less than or equal to the number of physical layer cell identifiers of the first cell.

[0200] In some embodiments, the first signal is sent on one or more time-frequency resources.

[0201] In some embodiments, the first signal is sent on multiple time domain resources of a frequency domain resource unit; or the first signal is sent on multiple frequency domain resource units of a time domain resource; or the first signal is sent on multiple frequency domain resource units and multiple time domain resources.

[0202] In some embodiments, as shown in FIG14 , the method may further include:

[0203] 1402. The network device further sends first information to the terminal device, where the first information includes configuration information of the network device.

[0204] In some embodiments, the first information includes at least one of the following: partial or full information of the identification of the first cell; partial or full information of the first time unit sequence number, wherein the first time unit sequence number is the sequence number information of the time unit in which the first signal and / or the first information is located on the time axis.

[0205] In some embodiments, the network device sends the first information on multiple time-frequency resources.

[0206] In some embodiments, the first information corresponds to the first signal on a time axis.

[0207] In some embodiments, on the time axis, the first information corresponds one-to-one to the first signal; or, multiple first information corresponds to one first signal.

[0208] In some embodiments, the position of the first information on the time axis is related to or unrelated to part or all of the information of the identifier of the first cell.

[0209] In some embodiments, the offset time of the first information relative to the first signal on the time axis is correlated with or uncorrelated with part or all of the information of the identifier of the first cell.

[0210] In some embodiments, the position of the first information on the time axis is indicated by at least one of the following parameters:

[0211] a first offset time, where the first offset time is an offset time of the first information relative to one of the first signals;

[0212] a second offset time, where the second offset time is an offset time of the first information relative to a group of the first signals; or

[0213] A third offset time, where the third offset time is an offset time of the first information relative to the second offset time.

[0214] In some embodiments, the parameter is related to or unrelated to part or all of the information of the identity of the first cell.

[0215] In some embodiments, the first offset time is the offset time of a starting point of the first information on the time axis relative to a starting point or an ending point of the first signal on the time axis; and / or

[0216] The second offset time is the offset time of a starting point of a group of first information on the time axis relative to a starting point or an ending point of a group of first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of first signals on the time axis; and / or

[0217] The second offset time is the offset time of a starting point of the first information on the time axis relative to a starting point or an ending point of a group of the first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of the first signals on the time axis.

[0218] In some embodiments, the first signal is transmitted on one or more frequency domain resource units, wherein the first information corresponding to the first signal is located on the same or different frequency domain resource units as the first signal.

[0219] In some embodiments, when the first signal and the corresponding first information are located on different frequency domain resource units, the frequency domain resource unit where the first information is located is predefined.

[0220] In some embodiments, the offset times of the first information on the plurality of frequency domain resource units relative to the first signal on the time axis are the same or different.

[0221] In some embodiments, as shown in FIG14 , the method may further include:

[0222] 1403. The network device further sends a first waveform to the terminal device, where the first waveform is used for backscattering of the terminal device.

[0223] In some embodiments, the first waveform includes at least a single-frequency signal with a constant envelope, which is continuous or discontinuous on the time axis; and / or the frequency point of the first waveform includes at least one frequency point in the frequency range corresponding to one or more frequency domain resource units.

[0224] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0225] According to the above embodiment, the network device sends at least a first signal for time synchronization to the terminal device, thereby helping the terminal device to accurately perform time synchronization and helping the terminal device to access the communication network or transmit information in the communication network.

[0226] Embodiments of the fourth aspect

[0227] The embodiment of the present application provides an information processing device, which may be, for example, a network device, or one or more components or assemblies configured on the network device, and the contents that are the same as those in the embodiment of the third aspect are not repeated here.

[0228] Figure 15 is a schematic diagram of an information processing device according to an embodiment of the present application. As shown in Figure 15 , the information processing device 1500 includes a sending unit 1501. The sending unit 1501 sends a first signal to a terminal device, where the first signal is used for at least time synchronization of the terminal device.

[0229] In some embodiments, the first signal is related to or unrelated to part or all of the information of the identity of the first cell.

[0230] In some embodiments, the waveform of the first signal is related to part or all of the information of the identification of the first cell; and / or the position of the first signal on the time axis and / or frequency axis is related to part or all of the information of the identification of the first cell.

[0231] In some embodiments, the first cell includes a cell where the network device is located or a cell corresponding to the network device.

[0232] In some embodiments, the number of identifiers of the first cell is less than or equal to the number of physical layer cell identifiers of the first cell.

[0233] In some embodiments, the first signal is sent on one or more time-frequency resources.

[0234] In some embodiments, the first signal is sent on multiple time domain resources of a frequency domain resource unit; or the first signal is sent on multiple frequency domain resource units of a time domain resource; or the first signal is sent on multiple frequency domain resource units and multiple time domain resources.

[0235] In some embodiments, the sending unit 1501 further sends first information to the terminal device, where the first information includes configuration information of the network device.

[0236] In some embodiments, the first information includes at least one of the following: partial or full information of the identification of the first cell; partial or full information of the first time unit sequence number, wherein the first time unit sequence number is the sequence number information of the time unit in which the first signal and / or the first information is located on the time axis.

[0237] In some embodiments, the sending unit 1501 sends the first information on multiple time-frequency resources.

[0238] In some embodiments, the first information corresponds to the first signal on a time axis.

[0239] In some embodiments, on the time axis, the first information corresponds one-to-one to the first signal; or, multiple first information corresponds to one first signal.

[0240] In some embodiments, the position of the first information on the time axis is related to or unrelated to part or all of the information of the identifier of the first cell.

[0241] In some embodiments, the offset time of the first information relative to the first signal on the time axis is correlated with or uncorrelated with part or all of the information of the identifier of the first cell.

[0242] In some embodiments, the position of the first information on the time axis is indicated by at least one of the following parameters:

[0243] a first offset time, where the first offset time is an offset time of the first information relative to one of the first signals;

[0244] a second offset time, where the second offset time is an offset time of the first information relative to a group of the first signals; or

[0245] A third offset time, where the third offset time is an offset time of the first information relative to the second offset time.

[0246] In some embodiments, the parameter is related to or unrelated to part or all of the information of the identity of the first cell.

[0247] In some embodiments, the first offset time is the offset time of a starting point of the first information on the time axis relative to a starting point or an ending point of the first signal on the time axis; and / or

[0248] The second offset time is the offset time of a starting point of a group of first information on the time axis relative to a starting point or an ending point of a group of first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of first signals on the time axis; and / or

[0249] The second offset time is the offset time of a starting point of the first information on the time axis relative to a starting point or an ending point of a group of the first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of the first signals on the time axis.

[0250] In some embodiments, the first signal is transmitted on one or more frequency domain resource units, wherein the first information corresponding to the first signal is located on the same or different frequency domain resource units as the first signal.

[0251] In some embodiments, when the first signal and the corresponding first information are located on different frequency domain resource units, the frequency domain resource unit where the first information is located is predefined.

[0252] In some embodiments, the offset times of the first information on the plurality of frequency domain resource units relative to the first signal on the time axis are the same or different.

[0253] In some embodiments, the sending unit 1501 further sends a first waveform, where the first waveform is used for backscattering of the terminal device.

[0254] In some embodiments, the first waveform includes at least a single-frequency signal with a constant envelope, which is continuous or discontinuous on the time axis; and / or the frequency point of the first waveform includes at least one frequency point in the frequency range corresponding to one or more frequency domain resource units.

[0255] The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

[0256] It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The information processing device 1500 may also include other components or modules. For details of these components or modules, reference may be made to related technologies.

[0257] In addition, for the sake of simplicity, FIG15 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

[0258] According to the above embodiment, the network device sends at least a first signal for time synchronization to the terminal device, thereby helping the terminal device to accurately perform time synchronization and helping the terminal device to access the communication network or transmit information in the communication network.

[0259] Embodiments of the fifth aspect

[0260] An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those in the embodiments of the first to fourth aspects will not be repeated.

[0261] In some embodiments, the communication system 100 may include at least a network device and a terminal device. The network device sends a first signal to the terminal device, the first signal being used at least for time synchronization of the terminal device; the terminal device receives the first signal sent by the network device and further receives a first waveform, the first waveform being used for backscattering by the terminal device.

[0262] An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

[0263] Figure 16 is a schematic diagram illustrating the structure of a network device according to an embodiment of the present application. As shown in Figure 16 , network device 1600 may include a processor 1610 (e.g., a central processing unit (CPU)) and a memory 1620 ; the memory 1620 is coupled to the processor 1610 . The memory 1620 may store various data and may also store an information processing program 1630 , which is executed under the control of the processor 1610 .

[0264] For example, the processor 1610 may be configured to execute a program to implement the operation of the network device in the method according to the embodiment of the third aspect. For example, the processor 1610 may be configured to perform the following control: sending a first signal to the terminal device, the first signal being used at least for time synchronization of the terminal device.

[0265] In addition, as shown in FIG16 , network device 1600 may further include: a transceiver 1640 and an antenna 1650, etc.; wherein, the functions of the above components are similar to those in the related art and are not described here in detail. It is worth noting that network device 1600 does not necessarily include all the components shown in FIG16 ; in addition, network device 1600 may also include components not shown in FIG16 , and reference may be made to the related art for details.

[0266] The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

[0267] Figure 17 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in Figure 17 , terminal device 1700 may include a processor 1710 and a memory 1720; memory 1720 is coupled to processor 1710. Memory 1720 may store various data or information processing programs, which are executed under the control of processor 1710. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunications or other functions.

[0268] For example, the processor 1710 may be configured to execute a program to implement the method according to the embodiment of the first aspect. For example, the processor 1710 may be configured to perform the following control: receiving a first signal sent by a network device, where the first signal is used at least for time synchronization of the terminal device; and further receiving a first waveform, where the first waveform is used for backscattering of the terminal device.

[0269] As shown in FIG17 , the terminal device 1700 may further include: a transceiver 1730 and an antenna 1740, etc. The functions of the above components are similar to those in the related art and are not described here in detail. It is worth noting that the terminal device 1700 does not necessarily include all the components shown in FIG17 ; in addition, the terminal device 1700 may also include components not shown in FIG17 , and reference may be made to the related art for details.

[0270] An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method described in the embodiment of the first aspect.

[0271] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method described in the embodiment of the first aspect.

[0272] An embodiment of the present application further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the method described in the embodiment of the third aspect.

[0273] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the method described in the embodiment of the third aspect.

[0274] The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0275] The method / device described in conjunction with the embodiments of the present application can be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and / or one or more combinations of functional block diagrams can correspond to various software modules of the computer program flow or to various hardware modules. These software modules can respectively correspond to the various steps shown in the figure. These hardware modules can be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

[0276] The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0277] One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in this application. One or more of the functional blocks and / or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

[0278] The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

[0279] Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

[0280] 1. An information processing device, configured in a network device, comprising:

[0281] A sending unit sends a first signal to a terminal device, where the first signal is at least used for time synchronization of the terminal device.

[0282] 2. The device according to Supplement 1, wherein:

[0283] The first signal is related to or unrelated to part or all of the information of the identifier of the first cell.

[0284] 3. The device according to Supplement 2, wherein:

[0285] The waveform of the first signal is related to part or all of the information of the identifier of the first cell; and / or

[0286] The position of the first signal on the time axis and / or frequency axis is related to part or all of the information of the identifier of the first cell.

[0287] 4. The device according to Supplement 1, wherein:

[0288] The first signal is sent on one or more time-frequency resources.

[0289] 5. The device according to Supplement 1, wherein:

[0290] The sending unit further sends first information to the terminal device, where the first information includes configuration information of the network device.

[0291] 6. The device according to Supplement 5, wherein:

[0292] The sending unit sends the first information on multiple time-frequency resources; and / or

[0293] The position of the first information on the time axis is indicated by at least one of the following parameters:

[0294] a first offset time, where the first offset time is an offset time of the first information relative to one of the first signals;

[0295] a second offset time, where the second offset time is an offset time of the first information relative to a group of the first signals; or

[0296] A third offset time, where the third offset time is an offset time of the first information relative to the second offset time.

[0297] 7. The device according to Supplement 5, wherein:

[0298] The first information corresponds to the first signal on the time axis.

[0299] 8. The device according to Supplementary Note 7, wherein:

[0300] On the time axis, the first information corresponds to the first signal one by one; or, multiple first information corresponds to one first signal.

[0301] 9. The device according to Supplement 5, wherein:

[0302] The first signal is sent on one or more frequency domain resource units, and the first information corresponding to the first signal is located on the same or different frequency domain resource unit as the first signal.

[0303] 10. The device according to Supplementary Note 9, wherein:

[0304] The offset times of the first information on the multiple frequency domain resource units relative to the first signal on the time axis are the same or different.

Claims

1. An information processing device, configured in a terminal device, comprising: a receiving unit configured to receive a first signal sent by a network device, wherein the first signal is at least used for time synchronization of the terminal device; The receiving unit further receives a first waveform, where the first waveform is used for backscattering of the terminal device.

2. The device according to claim 1, wherein The first signal is related to or unrelated to part or all of the information of the identifier of the first cell.

3. The device according to claim 2, wherein The waveform of the first signal is related to part or all of the information of the identifier of the first cell; and / or The position of the first signal on the time axis and / or frequency axis is related to part or all of the information of the identifier of the first cell.

4. The device according to claim 2, wherein The first cell includes a cell where the network device is located or a cell corresponding to the network device; and / or The number of identifiers of the first cell is less than or equal to the number of physical layer cell identifiers of the first cell.

5. The device according to claim 1, wherein The first signal is received on one or more time-frequency resources.

6. The device according to claim 1, wherein The first signal is received on multiple time domain resources of one frequency domain resource unit; or The first signal is received on multiple frequency domain resource units of one time domain resource; or The first signal is received on a plurality of frequency domain resource units and a plurality of time domain resources.

7. The device according to claim 1, wherein The receiving unit further receives first information sent by the network device, where the first information includes configuration information of the network device.

8. The device according to claim 7, wherein The first information includes at least one of the following: Partial or complete information of the identifier of the first cell; Partial or complete information of the first time unit sequence number, wherein the first time unit sequence number is the sequence number information of the time unit where the first signal and / or the first information is located on the time axis.

9. The device according to claim 7, wherein The receiving unit receives the first information on multiple time-frequency resources.

10. The device according to claim 7, wherein The first information corresponds to the first signal on the time axis.

11. The device according to claim 10, wherein On the time axis, the first information corresponds to the first signal one by one; or, multiple first information corresponds to one first signal.

12. The device according to claim 7, wherein The position of the first information on the time axis is related to or unrelated to part or all of the information of the identifier of the first cell.

13. The device according to claim 11, wherein The offset time of the first information relative to the first signal on the time axis is related to or unrelated to part or all of the information of the identifier of the first cell.

14. The device according to claim 7, wherein The position of the first information on the time axis is indicated by at least one of the following parameters: a first offset time, where the first offset time is an offset time of the first information relative to one of the first signals; a second offset time, where the second offset time is an offset time of the first information relative to a group of the first signals; or A third offset time, where the third offset time is an offset time of the first information relative to the second offset time.

15. The device according to claim 14, wherein The parameter is related to or unrelated to part or all of the information of the identifier of the first cell.

16. The device according to claim 14, wherein The first offset time is the offset time between the starting point of the first information on the time axis and the starting point or the ending point of the first signal on the time axis; and / or The second offset time is an offset time between a starting point of a group of first information on the time axis and a starting point or an ending point of a group of first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of first signals on the time axis; and / or The second offset time is the offset time of a starting point of the first information on the time axis relative to a starting point or an ending point of a group of the first signals on the time axis, or a starting point or an ending point of one of the first signals in a group of the first signals on the time axis.

17. The device according to claim 7, wherein The first signal is received on one or more frequency domain resource units, and the first information corresponding to the first signal is located on the same or different frequency domain resource unit as the first signal.

18. The device according to claim 17, wherein The offset times of the first information on the multiple frequency domain resource units relative to the first signal on the time axis are the same or different.

19. The device according to claim 1, wherein The first waveform at least includes a single-frequency signal with a constant envelope, which is continuous or discontinuous on the time axis; and / or The frequency point of the first waveform includes at least one frequency point in a frequency range corresponding to one or more frequency domain resource units.

20. A communication system comprising a network device and a terminal device, wherein: The network device sends a first signal to the terminal device, where the first signal is at least used for time synchronization of the terminal device; The terminal device receives the first signal sent by the network device, and the terminal device also receives a first waveform, where the first waveform is used for backscattering of the terminal device.

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