Method and apparatus used in node for internet of things communication in wireless communications

Abstract

The present application discloses a method and an apparatus used in a node for Internet of Things communication in wireless communications. A first node sends a first wireless signal in a first time domain resource set. The first wireless signal comprises paging-related information. Recipients of the first wireless signal comprise an Internet of Things device. The time domain position of the first time domain resource set depends on whether the Internet of Things device is in a connected state. The Internet of Things device being in a connected state comprises at least one of: the Internet of Things device being configured with an ID by the first node or the network side; the Internet of Things device being authorized by the first node or the network side; the Internet of Things device having communicated with the first node or the network side within a first time window, the first time window being predefined or configured; or the Internet of Things device having registered with the first node or the network side. The present application achieves precise control of paging occasions, avoiding communication interference while enabling flexible network deployment.

Description

A method and apparatus in a node used for Internet of Things communication in wireless communication

[0001] This application claims priority from the Chinese patent application No. 202411358078.0, filed on September 27, 2024, and entitled "A method and apparatus in a node used for Internet of Things communication in wireless communication", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to a signal transmission method and apparatus in a wireless communication system, and in particular to a method and apparatus for Ambient Internet of Things (Ambient IoT or Am IoT). BACKGROUND

[0003] Traditional Internet of Things (IoT) technology improves production efficiency and quality of life through wireless communication between devices, however, traditional IoT devices usually rely on battery power supply, and need to be manually replaced or charged, which not only leads to high maintenance costs and environmental problems, but also brings safety hazards in wireless sensor applications in special industries such as power and oil; to solve the limitations of traditional IoT technology, 3GPP (3rd Generation Partner Project) started research on Ambient Internet of Things (Ambient IoT or Am IoT) technology based on Release-18 (Release-18) from Rel-18 (Release-18), focusing on supporting devices without batteries or with limited energy storage. Ambient IoT devices achieve device power supply through ambient energy harvesting technology (such as radio waves, light, motion, and heat), thereby reducing manual intervention and reducing device complexity and power consumption; Ambient IoT technology has a wider coverage range and lower deployment cost, and is suitable for low-power consumption scenarios, especially for asset management, logistics tracking, and other scenarios.

[0004] Currently, the Technical Specification Group (TSG) RAN (Radio Access Network) has completed the technical framework of Ambient IoT in Rel-18, defined representative use cases, deployment scenarios, connectivity topologies, Ambient IoT devices, design targets, and required functionalities, etc., and conducted preliminary feasibility assessment. In the future, Ambient IoT technology will fill the gap of existing technologies in ultra-high density connection and ultra-low power consumption applications, and promote the growth of IoT device quantity to the order of hundreds of billions, opening up new markets for the Internet of Things field. SUMMARY

[0005] The applicant found through research that when the Ambient IoT function is introduced, when the reader sends a paging signal for the Ambient IoT device is a problem worth studying.

[0006] To solve the above problems, a solution is disclosed in the present application. It should be noted that although the original intention of the present application is for the Ambient IoT scenario, the present application can also be applied to other non-Ambient IoT scenarios; further, adopting a unified design scheme for different scenarios (such as other non-Ambient IoT scenarios, including but not limited to Vehicle to Everything (V2X), capacity enhancement systems, near-range communication systems, IoT, URLLC (Ultra Reliable Low Latency Communication) networks, etc.) also helps to reduce hardware complexity and cost. In the case of no conflict, the embodiments in any node of the present application and the features in the embodiments can be applied to any other node. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0007] In particular, the explanation of the terminology, nouns, functions, variables in this application (if not specially stated) can refer to the definitions in TS38 series, TS37 series in the technical standards (Technical Specification, TS) of 3GPP (the 3rd Generation Partnership Project). If necessary, TS38.211, TS38.212, TS38.213, TS38.214, TS38.215, TS38.300, TS38.304, TS38.305, TS38.321, TS38.331, TS37.355, TS38.423 in the 3GPP technical standards can be referred to for the understanding of this application.

[0008] As an embodiment, the explanation of the terminology in this application refers to the definitions in the specification agreement TS38 series of 3GPP.

[0009] As an embodiment, the explanation of the terminology in this application refers to the definitions in the specification agreement TS37 series of 3GPP.

[0010] As an embodiment, the explanation of the terminology in this application refers to the definitions in the specification agreement Rel-17 version of 3GPP.

[0011] As an embodiment, the explanation of the terminology in this application refers to the definitions in the specification agreement Rel-18 version of 3GPP.

[0012] The present application discloses a method for a first node of Internet of Things communication in wireless communication, comprising:

[0013] transmitting a first wireless signal in a first set of time domain resources;

[0014] wherein the first wireless signal comprises paging related information; the receiver of the first wireless signal comprises a second node, and the time domain location of the first set of time domain resources depends on whether the second node is in a connected state; the second node being in a connected state comprises at least one of the following:

[0015] the second node is configured with an ID by the first node or a network side;

[0016] the second node is authorized by the first node or a network side;

[0017] the second node has communicated with the first node or a network side in a first time window, and the first time window is predefined or configured;

[0018] - the second node is registered with the first node or network side.

[0019] As an embodiment, the problem to be solved by the present application includes: how Ambient IoT devices implement packet paging.

[0020] As an embodiment, the problem to be solved by the present application includes: how terminals determine whether Ambient IoT devices are in a connected state.

[0021] As an embodiment, the problem to be solved by the present application includes: when terminals send paging signals for Ambient IoT devices.

[0022] As an embodiment, the features of the above method include: in the present application, the time domain resources occupied by terminals when sending paging related information for Ambient IoT devices depend on whether the Ambient IoT devices are in a connected state, thereby solving the above problems.

[0023] As an embodiment, the features of the above method include: in the present application, terminals determine whether Ambient IoT devices are in a connected state according to whether the Ambient IoT devices are configured with an ID by the terminals or network side, or / and whether the Ambient IoT devices are authorized by the first node or network side, or / and whether the Ambient IoT devices have communicated with the first node or network side in a predefined or configured time window, or / and whether the Ambient IoT devices are registered with the first node or network side, thereby solving the above problems.

[0024] As an embodiment, the features of the above method include: the first node is a terminal.

[0025] As an embodiment, the features of the above method include: the first node is a reader.

[0026] As an embodiment, the benefits of the above method include: the present application supports a reader directly paging devices not in a connected state, simplifies the operation process, and reduces system maintenance costs.

[0027] As an embodiment, the benefits of the above method include: a reader discovers and identifies new devices in specific time domain resources, improving system flexibility.

[0028] As an embodiment, the benefits of the above method include: devices in a connected state can monitor paging related information in dedicated time domain resources, having good energy saving effect.

[0029] According to an aspect of the present application, the method is characterized in that the second node is in a connected state, and the first set of time domain resources belongs to a first time domain resource pool; or the second node is not in a connected state, and the first set of time domain resources belongs to a second time domain resource pool; the first time domain resource pool and the second time domain resource pool are different.

[0030] As an embodiment, the problem to be solved by the present application includes: when a terminal sends a paging signal for an Ambient IoT device.

[0031] As an embodiment, the method is characterized in that the present application divides the time domain resources occupied by the paging information into two time domain resource pools, and the terminal sends paging-related information in different time domain resource pools according to whether the Ambient IoT device is in a connected state, thereby solving the above problem.

[0032] As an embodiment, the method is characterized in that the present application supports time-division paging of devices in a connected state and devices not in a connected state.

[0033] As an embodiment, the method is characterized in that the present application enhances security and protects device privacy information.

[0034] As an embodiment, the method is characterized in that the time-division paging mechanism is simple to implement and reduces costs.

[0035] As an embodiment, the method is characterized in that the present application separately manages devices in a connected state and devices not in a connected state, reduces communication conflicts, and improves resource utilization.

[0036] According to an aspect of the present application, the method is characterized in that the positions of the time domain resources occupied by the first time domain resource pool and the positions of the time domain resources occupied by the second time domain resource pool both depend on the ID of the second node.

[0037] As an embodiment, the method is characterized in that the present application improves paging success rate, reduces the number of invalid device responses, and improves communication reliability and stability.

[0038] As an embodiment, the method is characterized in that the present application wakes up accurately.

[0039] As an embodiment, the method is characterized in that the present application saves energy consumption of Internet of Things devices.

[0040] According to an aspect of the present application, the method is characterized in that the positions of the time domain resources occupied by the first time domain resource pool and the positions of the time domain resources occupied by the second time domain resource pool both depend on the ID of the first node.

[0041] As an embodiment, the above method has the benefit of improving paging efficiency.

[0042] As an embodiment, the above method has the benefit of allowing IoT devices to monitor paging information within the working time period of the designated reader, avoiding interference from different readers, and improving system security.

[0043] As an embodiment, the above method has the benefit of facilitating device management and group control, and achieving more precise wake-up.

[0044] According to an aspect of the present application, the above method is characterized by comprising:

[0045] receiving a second wireless signal in a second set of time domain resources;

[0046] wherein the time domain position of the second set of time domain resources depends on the time domain position of the first set of time domain resources; and the first wireless signal triggers the sending of the second wireless signal.

[0047] As an embodiment, the above method has the benefit of allowing the second wireless signal to be a response of the second node to the reception of the first wireless signal.

[0048] As an embodiment, the above method has the benefit of allowing the second wireless signal to enable the terminal to better understand the device state.

[0049] As an embodiment, the above method has the benefit of improving the success rate of paging and enhancing the reliability of the system.

[0050] According to an aspect of the present application, the above method is characterized in that the second wireless signal is for a random access process initiated by the second node.

[0051] As an embodiment, the above method has the benefit of allowing the first wireless signal to trigger a random access process of the second node, and the random access process includes sending the second wireless signal.

[0052] As an embodiment, the above method has the benefit of allowing the second wireless signal to include a D2R time requirement signal.

[0053] As an embodiment, the above method has the benefit of allowing the second wireless signal to be used to establish uplink synchronization between the second node and the first node.

[0054] As an embodiment, the above method has the benefit of reducing conflicts and improving the success rate of access.

[0055] As an embodiment, the above method has the benefit of enhancing the reliability of the system.

[0056] As an embodiment, the above method has the benefit of good compatibility.

[0057] According to an aspect of the present application, the above method is characterized in that a time interval between the first set of time domain resources and the second set of time domain resources is no less than a first time value, which depends on whether the second node is in a connected state.

[0058] As an embodiment, the above method has the feature that the first time value is indicated by control information, which is transmitted on PRDCH.

[0059] As an embodiment, the above method has the feature that the first time value is indicated by the first wireless signal.

[0060] As an embodiment, the above method has the feature that the first time value is predefined.

[0061] As an embodiment, the above method has the benefit that Internet of Things devices that are not in a connected state can need a longer processing delay to prepare connection information, and the first time value depending on whether the device is in a connected state can ensure that all Internet of Things devices have sufficient signal processing time while reducing signal interaction delay.

[0062] As an embodiment, the above method has the benefit of ensuring that the reader has sufficient time to stop sending and receive responses, avoiding data collision.

[0063] As an embodiment, the above method has the benefit of reducing blind waiting and saving energy.

[0064] According to an aspect of the present application, the above method is characterized in that the second node is a device that uses signal excitation transmission.

[0065] As an embodiment, the above method has the feature that the sender of the excitation signal is a network-side device.

[0066] As an embodiment, the above method has the feature that the sender of the excitation signal is the first node.

[0067] As an embodiment, the above method has the feature that the second node modulates the excitation signal based on backscatter communication.

[0068] As an embodiment, the above method has the benefit of saving energy and reducing electromagnetic interference.

[0069] As an embodiment, the above method has the benefit that the excitation signal can be used to transmit information and at the same time provide energy for the device, improving the overall efficiency of the system.

[0070] As one embodiment, the above method has the benefits of reducing hardware cost and maintenance cost, and being suitable for more diversified environmental conditions.

[0071] According to an aspect of the present application, the above method is characterized in that the first node is a user equipment.

[0072] According to an aspect of the present application, the above method is characterized in that the first node is a network device.

[0073] According to an aspect of the present application, the above method is characterized in that the first node is a reader-writer.

[0074] According to an aspect of the present application, the above method is characterized in that the first node is a terminal.

[0075] The present application discloses a method in a second node for Internet of Things communication in wireless communication, comprising:

[0076] receiving a first wireless signal in a first set of time domain resources;

[0077] wherein the first wireless signal comprises paging related information; the sender of the first wireless signal comprises a first node, and the time domain location of the first set of time domain resources depends on whether the second node is in a connected state; the second node being in a connected state comprises at least one of the following:

[0078] the second node being configured with an ID by the first node or a network side;

[0079] the second node being authorized by the first node or the network side;

[0080] the second node having communicated with the first node or the network side in a first time window, the first time window being predefined or configured;

[0081] the second node being registered with the first node or the network side.

[0082] As one embodiment, the above method has the features of the second node being a user equipment.

[0083] As one embodiment, the above method has the features of the second node being a terminal device.

[0084] As one embodiment, the above method has the features of the second node being an Internet of Things device.

[0085] As one embodiment, the above method has the features of the second node being a passive Internet of Things device.

[0086] As one embodiment, the method has the feature that the second node is a Passive IoT device.

[0087] As one embodiment, the method has the feature that the second node is an Ambient IoT device.

[0088] According to one aspect of the present application, the method has the feature that the second node is in a connected state, and the first set of time domain resources belongs to a first time domain resource pool; or the second node is not in a connected state, and the first set of time domain resources belongs to a second time domain resource pool; the first time domain resource pool and the second time domain resource pool are different.

[0089] According to one aspect of the present application, the method has the feature that the position of the time domain resources occupied by the first time domain resource pool and the position of the time domain resources occupied by the second time domain resource pool both depend on the ID of the second node.

[0090] According to one aspect of the present application, the method has the feature that the position of the time domain resources occupied by the first time domain resource pool and the position of the time domain resources occupied by the second time domain resource pool both depend on the ID of the first node.

[0091] According to one aspect of the present application, the method has the feature that it includes:

[0092] sending a second wireless signal in a second set of time domain resources;

[0093] wherein the time domain position of the second set of time domain resources depends on the time domain position of the first set of time domain resources; the first wireless signal triggers the sending of the second wireless signal.

[0094] According to one aspect of the present application, the method has the feature that the second wireless signal is for a random access procedure initiated by the second node.

[0095] According to one aspect of the present application, the method has the feature that the time interval between the first set of time domain resources and the second set of time domain resources is not less than a first time value, and the first time value depends on whether the second node is in a connected state.

[0096] According to one aspect of the present application, the method has the feature that the second node is a device that uses signal-stimulated transmission.

[0097] According to one aspect of the present application, the method has the feature that the second node is an Internet of Things device.

[0098] According to one aspect of the present application, the method has the feature that the second node is a Passive Internet of Things device.

[0099] According to an aspect of the present application, the method is characterized in that the second node is an environmental IoT device.

[0100] The present application discloses a device of a first node for IoT communication in wireless communication, comprising:

[0101] a first transmitter, configured to transmit a first wireless signal in a first set of time domain resources;

[0102] wherein the first wireless signal comprises paging related information; a receiver of the first wireless signal comprises a second node, and a time domain location of the first set of time domain resources depends on whether the second node is in a connected state; the second node being in the connected state comprises at least one of the following:

[0103] the second node being configured with an ID by the first node or a network side;

[0104] the second node being authorized by the first node or the network side;

[0105] the second node having communicated with the first node or the network side in a first time window, the first time window being predefined or configured;

[0106] the second node being registered with the first node or the network side.

[0107] The present application discloses a device of a second node for IoT communication in wireless communication, comprising:

[0108] a second receiver, configured to receive a first wireless signal in a first set of time domain resources;

[0109] wherein the first wireless signal comprises paging related information; a transmitter of the first wireless signal comprises a first node, and a time domain location of the first set of time domain resources depends on whether the second node is in a connected state; the second node being in the connected state comprises at least one of the following:

[0110] the second node being configured with an ID by the first node or a network side;

[0111] the second node being authorized by the first node or the network side;

[0112] the second node having communicated with the first node or the network side in a first time window, the first time window being predefined or configured;

[0113] the second node being registered with the first node or the network side.

[0114] As an embodiment, compared with the conventional scheme, the present application has the following advantages, but is not limited to:

[0115] The present application supports Ambient IoT technology, with small device size, low complexity and power consumption, and easy to be deployed in large scale;

[0116] The time division paging mechanism can manage the devices in the connected state and the devices not in the connected state separately, reduce communication conflicts, and improve resource utilization;

[0117] Save the energy consumption of the device and the reader, and improve the endurance time;

[0118] Precise control of paging opportunity can avoid communication interference and realize flexible network deployment. BRIEF DESCRIPTION OF DRAWINGS

[0119] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings:

[0120] Figure 1 shows a flowchart of the transmission of a first node according to an embodiment of the present application;

[0121] Figure 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0122] Figure 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0123] Figure 4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0124] Figure 5 shows a flowchart of the transmission between a first node and a second node according to an embodiment of the present application;

[0125] Figure 6 shows a schematic diagram of two cases of time domain location of a first set of time domain resources according to an embodiment of the present application;

[0126] Figure 7 shows a schematic diagram of the relationship between a first time domain resource pool and a second time domain resource pool and a second node according to an embodiment of the present application;

[0127] Figure 8 shows a schematic diagram of the relationship between a first time domain resource pool and a second time domain resource pool and a first node according to an embodiment of the present application;

[0128] Figure 9 shows a schematic diagram of a first time value according to an embodiment of the present application;

[0129] Figure 10 shows a schematic diagram of an Ambient IoT device structure according to an embodiment of the present application;

[0130] Figure 11 shows a structural block diagram of a processing apparatus in a first node according to an embodiment of the present application;

[0131] Figure 12 shows a structural block diagram of a processing apparatus in a second node according to an embodiment of the present application. DETAILED DESCRIPTION

[0132] The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily without conflict. Based on performance, flexibility, complexity, overhead and compatibility, etc., the person skilled in the art has the motivation to flexibly combine the embodiments in different drawings without conflict, including but not limited to the embodiments in Figure 1 and the embodiments in Figures 5-12, the embodiments in Figure 5 and the embodiments in Figures 6-12, etc.

[0133] Embodiment 1

[0134] Embodiment 1 illustrates a flowchart of a first node transmission according to an embodiment of the present application, as shown in Figure 1. In Figure 1, each block represents a step. In particular, the order of the steps in the blocks does not represent a specific time sequence between the steps.

[0135] The first node transmits a first wireless signal in a first set of time domain resources in step 101.

[0136] In embodiment 1, wherein the first wireless signal comprises paging related information; the receiver of the first wireless signal comprises a second node, and the time domain location of the first set of time domain resources depends on whether the second node is in a connected state; the second node being in a connected state comprises at least one of the following:

[0137] - the second node is configured with an ID by the first node or a network side;

[0138] - the second node is authorized by the first node or the network side;

[0139] - the second node has communicated with the first node or the network side in a first time window, and the first time window is predefined or configured;

[0140] - the second node is registered with the first node or the network side.

[0141] As an embodiment, the first node is a user equipment (UE).

[0142] As one embodiment, the first node is a terminal.

[0143] As one embodiment, the first node is a reader.

[0144] As one embodiment, the first node is the first node in the present application.

[0145] As one embodiment, the second node is the second node in the present application.

[0146] As one embodiment, the ID refers to IDentify, to prove.

[0147] As one embodiment, the ID refers to IDentification, identity.

[0148] As one embodiment, the ID refers to IDentity, identity or identification.

[0149] As one embodiment, the ID refers to IDentifier, identifier.

[0150] As one embodiment, the ID refers to InDex, index.

[0151] As one embodiment, the first node transmits the first wireless signal in a first set of time domain resources.

[0152] As one embodiment, the first set of time domain resources includes one or more wireless frames.

[0153] As one embodiment, the first set of time domain resources includes one or more slots.

[0154] As one embodiment, the first set of time domain resources includes periodic time domain resources.

[0155] As one embodiment, the first set of time domain resources includes discontinuous time domain resources.

[0156] As one embodiment, the first set of time domain resources depends on one or more PFs (Paging Frames) of the first node.

[0157] As one embodiment, the first set of time domain resources corresponds to one or more PFs of the first node.

[0158] As one embodiment, the first set of time domain resources depends on one or more POs (Paging Occasions) of the first node.

[0159] As an embodiment, the first set of time domain resources corresponds to one or more POs of the first node.

[0160] As an embodiment, the first set of time domain resources depends on one or more POs in one or more PFs of the first node.

[0161] As an embodiment, the first set of time domain resources corresponds to one or more POs in one or more PFs of the first node.

[0162] As an embodiment, the first set of time domain resources corresponds to time domain resources occupied by pagingSearchSpace of the first node.

[0163] As an embodiment, the first set of time domain resources corresponds to PDCCH (Physical Downlink Control CHannel) MO(s) (Monitoring Occasion(s)) associated with one or more POs of the first node.

[0164] As an embodiment, the first set of time domain resources comprises time domain resources occupied by the first wireless signal.

[0165] As an embodiment, time domain resources occupied by the first wireless signal belong to the first set of time domain resources.

[0166] As an embodiment, the first wireless signal occupies contiguous time domain resources.

[0167] As an embodiment, the first wireless signal occupies one or more multi-carrier symbols.

[0168] As an embodiment, time domain resources occupied by the first wireless signal depend on one PF of the first node comprised in the first set of time domain resources.

[0169] As an embodiment, time domain resources occupied by the first wireless signal depend on one PO of the first node comprised in the first set of time domain resources.

[0170] As an embodiment, time domain resources occupied by the first wireless signal depend on PDCCH MO(s) of the first node.

[0171] As an embodiment, time domain resources occupied by the first wireless signal depend on time domain resources occupied by pagingSearchSpace of the first node.

[0172] As an embodiment, the configuration of the first time domain resource set relies on a PCCH-Config IE (Information Element).

[0173] As an embodiment, the one PF in the present application is one radio frame.

[0174] As an embodiment, the one PF in the present application comprises one or more PO(s).

[0175] As an embodiment, the one PF in the present application comprises a starting point of one or more PO(s).

[0176] As an embodiment, the one PO in the present application comprises a plurality of PDCCH MOs.

[0177] As an embodiment, the one PO in the present application comprises a plurality of consecutive PDCCH MOs.

[0178] As an embodiment, the first wireless signal comprises the paging related information.

[0179] As an embodiment, the paging related information comprises a PCCH (Paging Control CHannel).

[0180] As an embodiment, the paging related information comprises a Paging DCI (Downlink Control Information).

[0181] As an embodiment, the paging related information comprises a PDCCH carrying a CRC (Cyclic Redundancy Check) scrambled by a P-RNTI (Paging-Radio Network Temporary Identifier).

[0182] As an embodiment, the paging related information comprises a PDCCH scheduling a PCH (Paging CHannel).

[0183] As an embodiment, the paging related information comprises a PDCCH scheduling a PDSCH (Physical Downlink Shared CHannel) for paging.

[0184] As one embodiment, the receiver of the first wireless signal comprises the second node.

[0185] As one embodiment, the first wireless signal is directed to a first group of devices, the first group of devices comprising the second node.

[0186] As one embodiment, the second node is a low power device.

[0187] As one embodiment, the second node is a lower power consumption device.

[0188] As one embodiment, the second node has energy storage.

[0189] As one embodiment, the second node supports backscatter communication.

[0190] As one embodiment, the second node is an Ambient IoT device.

[0191] As one embodiment, the second node comprises independent signal generation.

[0192] As one embodiment, the second node comprises independent signal amplification.

[0193] As one embodiment, the second node transmits signals independent of an energizing node other than the second node.

[0194] As one embodiment, the second node has no independent signal generation and signal amplification.

[0195] As one embodiment, the second node is a device that employs signal energization for transmission.

[0196] As one embodiment, the second node's uplink transmission relies on an energizing signal.

[0197] As one embodiment, the second node's transmission relies on an energizing signal.

[0198] As one embodiment, the second node rectifies the energizing signal upon receipt to the transmission of the energizing signal.

[0199] As one embodiment, the second node modulates the energizing signal upon receipt to the transmission of the energizing signal.

[0200] As one embodiment, the second node transduces the excitation signal upon receiving the excitation signal to transmit the excitation signal.

[0201] As one embodiment, the excitation signal transmitted by the second node upon receiving the excitation signal is a backscatter of the received excitation signal.

[0202] As one embodiment, the excitation signal transmitted by the second node upon receiving the excitation signal is a modulated retransmission of the received excitation signal.

[0203] As one embodiment, the excitation signal in the present application is a wireless signal.

[0204] As one embodiment, the excitation signal in the present application is a baseband signal.

[0205] As one embodiment, the excitation signal in the present application is a narrowband signal.

[0206] As one embodiment, the excitation signal in the present application is generated by a sequence.

[0207] As one embodiment, the excitation signal in the present application is a CW (Carrier Wave) signal.

[0208] As one embodiment, the excitation signal in the present application is an EH (Energy Harvest) signal.

[0209] As one embodiment, the excitation signal in the present application is an RF (Radio Frequency) signal.

[0210] As one embodiment, the excitation signal in the present application is a single-tone unmodulated sinusoid waveform.

[0211] As one embodiment, the excitation signal in the present application is a multi-tone unmodulated sinusoid waveform.

[0212] As one embodiment, the excitation signal in the present application occupies FDD (Frequency Division Duplexing) spectrum.

[0213] As one embodiment, the transmitter of the excitation signal in the present application is the first node.

[0214] As an embodiment, the transmitter of the excitation signal in the present application is a node other than the first node and the second node.

[0215] As an embodiment, the transmitter of the excitation signal in the present application is a user equipment.

[0216] As an embodiment, the transmitter of the excitation signal in the present application is a reader device.

[0217] As an embodiment, the transmitter of the excitation signal in the present application is a network device.

[0218] As an embodiment, the transmitter of the excitation signal in the present application is a base station device.

[0219] As an embodiment, the transmitter of the excitation signal in the present application is an access network device.

[0220] As an embodiment, the transmitter of the excitation signal in the present application is a core network device.

[0221] As an embodiment, the time domain location of the first set of time domain resources depends on whether the second node is in a connected state or not.

[0222] As an embodiment, whether the second node is in a connected state or not is used to determine the time domain location of the first set of time domain resources.

[0223] As an embodiment, the time domain location in the present application comprises a location of a time domain resource.

[0224] As an embodiment, the time domain location in the present application comprises a time domain location of a radio frame occupied.

[0225] As an embodiment, the time domain location in the present application comprises a time domain location of a time slot occupied.

[0226] As an embodiment, the time domain location in the present application comprises a location of a time slot occupied in a radio frame.

[0227] As an embodiment, the time domain location in the present application comprises a time domain location of one or more multicarrier symbols occupied.

[0228] As an embodiment, the time domain location in the present application comprises a location of one or more multicarrier symbols occupied in a time slot.

[0229] As an embodiment, the time domain location in the present application comprises a location of a PF occupied.

[0230] As an embodiment, the time domain location in the present application comprises a location of a PO occupied.

[0231] As an embodiment, the time domain location in the present application comprises a location of a PDCCH MO occupied.

[0232] As an embodiment, the second node being in a connected state comprises that the second node is configured with an ID by the first node or a network side (NW-side).

[0233] As an embodiment, the second node being in a connected state comprises that the second node is configured with an ID by the first node.

[0234] As an embodiment, the second node being in a connected state comprises that the second node is configured with an ID by the network side.

[0235] As an embodiment, the second node not being in a connected state comprises that the second node is not configured with an ID by the first node.

[0236] As an embodiment, the second node not being in a connected state comprises that the second node is not configured with an ID by the network side.

[0237] As an embodiment, the second node not being in a connected state comprises that the ID of the second node is default.

[0238] As an embodiment, the second node not being in a connected state comprises that the ID of the second node is equal to 0.

[0239] As an embodiment, the network side in the present application comprises a base station side (gNB-side).

[0240] As an embodiment, the network side in the present application comprises a Radio Access Network (RAN) side (RAN-side).

[0241] As an embodiment, the network side in the present application comprises a Core Network (CN) side (CN-side).

[0242] As an embodiment, the network side in the present application comprises an Authentication Management Field (AMF) device.

[0243] As an embodiment, the ID configured to the second node by the first node or the network side is valid in a given time window and invalid outside the given time window.

[0244] As a sub-em embodiment of this embodiment, the second node is in a connected state in the given time window.

[0245] As a sub-em embodiment of this embodiment, the second node is not in a connected state outside the given time window.

[0246] As an embodiment, the ID configured to the second node by the first node is valid only for the first node.

[0247] As an embodiment, the ID configured to the second node by the access network side is valid only for the access network side.

[0248] As an embodiment, the ID configured to the second node by the network side is valid only for a reader that has established an RRC connection with the network.

[0249] As an embodiment, the second node being in a connected state comprises that the second node is granted by the first node or the network side.

[0250] As an embodiment, the second node being in a connected state comprises that the second node is granted by the first node.

[0251] As an embodiment, the second node being in a connected state comprises that the second node is granted by the network side.

[0252] As an embodiment, the second node not being in a connected state comprises that the second node is not granted by the network side.

[0253] As an embodiment, the second node not being in a connected state comprises that the second node is not granted by the first node.

[0254] As an embodiment, the meaning of the granting comprises that the first node sends a PRDCH (Physical Reader-to-Device CHannel) to the second node.

[0255] As a sub-em embodiment of this embodiment, the meaning of the granting further comprises that the first node receives a feedback from the second node for the PRDCH.

[0256] As an embodiment, the meaning of the granting comprises that the first node configures an RNTI to the second node.

[0257] As an embodiment, the meaning of the granting comprises that the first node schedules the second node in a given time window.

[0258] As one embodiment, the authorization by the first node or the network side for the second node takes effect in a given time window and is invalid outside the given time window.

[0259] As one sub-embodiment of this embodiment, the second node is in a connected state in the given time window.

[0260] As one embodiment, the second node being in a connected state comprises the second node communicating with the first node or network side in a first time window, the first time window being predefined or configured.

[0261] As one embodiment, the second node being in a connected state comprises the second node communicating with the first node in the first time window.

[0262] As one embodiment, the second node being in a connected state comprises the second node communicating with the network side in the first time window.

[0263] As one embodiment, the second node not being in a connected state comprises the second node not communicating with the network side in the first time window.

[0264] As one embodiment, the second node not being in a connected state comprises the second node not communicating with the first node in the first time window.

[0265] As one embodiment, the communication comprises communication for data transmission.

[0266] As one embodiment, the communication comprises communication for control transmission.

[0267] As one embodiment, the communication comprises communication for sensing transmission.

[0268] As one embodiment, the first time window is predefined.

[0269] As one embodiment, the first time window is configured.

[0270] As one embodiment, the first time window is configured by RRC (Radio Resource Control) signaling.

[0271] As one embodiment, the first time window is configured by NAS (Non-Access Stratum) signaling.

[0272] As one embodiment, the first time window is related to a type of the second node.

[0273] As one embodiment, the first time window is related to a Category of the second node.

[0274] As one embodiment, the first time window is related to a Feature of the second node.

[0275] As one embodiment, the first time window is related to a FeatureCombination of the second node.

[0276] As one embodiment, the first time window is related to a Capability of the second node.

[0277] As one embodiment, the first time window is related to a UEAssistanceInformation of the second node.

[0278] As one embodiment, the first time window is related to a UECapabilityInformation of the second node.

[0279] As one embodiment, the second node being in a connected state comprises the second node being registered with the first node or a network side.

[0280] As one embodiment, the second node being in a connected state comprises the second node being registered with the first node.

[0281] As one embodiment, the second node being in a connected state comprises the second node being registered with the network side.

[0282] As one embodiment, the second node not being in a connected state comprises the second node not being registered with the first node.

[0283] As one embodiment, the second node not being in a connected state comprises the second node not being registered with the network side.

[0284] As one embodiment, the registration comprises Registered.

[0285] As one embodiment, the registration comprises Assigned.

[0286] As one embodiment, the registration comprises the second node initiating a random access to the first node.

[0287] As one sub-embodiment of this embodiment, the registration further comprises the first node receiving a random access request from the second node and sending a response.

[0288] As one embodiment, the meaning of the registration comprises the first node configuring a RNTI for the second node.

[0289] As one embodiment, the meaning of the registration comprises the first node scheduling the second node in a given time window.

[0290] As one embodiment, the registration of the second node by the first node or the network side is valid in a given time window and invalid outside the given time window.

[0291] As one sub-embodiment of this embodiment, the second node is in a connected state in the given time window.

[0292] Embodiment 2

[0293] Embodiment 2 illustrates a schematic diagram of a network architecture according to one embodiment of the present application, as shown in FIG. 2.

[0294] FIG. 2 illustrates a network architecture 200. The network architecture 200 is a network architecture of LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), 5G system, 5G-Advanced, and future 6G system. The network architecture of LTE, LTE-A, 5G system, 5G-Advanced, and future 6G system is referred to as EPS (Evolved Packet System). The 5G NR or LTE network architecture can be referred to as 5GS (5G System) / EPS or some other suitable term; the 6G network architecture can be referred to as 6GS (6G System) / EPS or some other suitable term.

[0295] The network architecture 200 can include one or more UEs 201, a device 241 in communication with the UEs 201, a RAN (Next Generation Radio Access Network) 202, a core network 210, a HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. The network architecture 200 can be interconnected with other access networks, but these entities / interfaces are not shown for simplicity.

[0296] As shown in FIG. 2, the network architecture 200 provides packet switching services, however those skilled in the art will appreciate that the various concepts presented throughout this application are general ly applicable to networks providing circuit switching services or other cellular networks. The RAN 202 includes Node Bs 203 and other nodes 204. The Node Bs 203 provide user and control plane protocol terminations toward the UEs 201. The Node Bs 203 can be connected to the other nodes 204 via an Xn interface (e.g., backhaul). The Node Bs 203 can also be referred to as eNBs (evolved Node Bs), gNBs, base stations, base station transceivers, wireless base stations, wireless transceivers, transceiver functions, BSSs (Basic Service Sets), ESSs (Extended Service Sets), TRPs (Transmitter Receiver Points), or some other suitable terminology. The Node Bs 203 provide access to the core network 210 for the UEs 201; the core network 210 is a 5GC (5G Core network) / EPC (Evolved Packet Core), or alternatively, the core network 210 is a 6GC (6G Core network). Examples of UEs 201 include a cellular phone, a smart phone, a SIP phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, a vehicle, a narrowband physical web device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similar functional device. Those skilled in the art will also recognize that the UE 201 can be referred to as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wirelessExamples of the Device 241 include an IoT (Internet of Things) device, an RFID (Radio Frequency Identification) device, an electronic tag, a sensor device, a cellular phone, a smartphone, a SIP phone, a laptop, a PDA, a satellite radio, non-terrestrial base station communication, satellite mobile communication, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aerial vehicle, a narrowband internet of things device, a machine type communication device, a land vehicle, a car, a wearable device, a test equipment, a test meter, a test tool, or any other similar functional device. Those skilled in the art could also call the Device 241 a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The Node B 203 is connected by an S1 / NG interface to the Core Network 210. The Core Network 210 includes a MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, a S-GW (Service Gateway) / UPF (User Plane Function) 212, and a P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is a control node that handles signaling between the UE 201 and the Core Network 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transferred through the S-GW / UPF 212, which itself is connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation as well as other functions. The P-GW / UPF 213 is connected to the Internet Services 230. The Internet Services 230 include operator's corresponding Internet Protocol services, which can specifically include the Internet, an intranet, an IMS (IP Multimedia Subsystem), and a packet-switched streaming service.

[0297] As one embodiment, the first node in the present application comprises the UE 201.

[0298] As one embodiment, the first node in the present application comprises the Node B 203.

[0299] As one embodiment, the second node in the present application comprises the Device 241.

[0300] As one embodiment, the core network 210 comprises an Ambient IoT Function Controller, which is configured to control IoT application services with Ambient IoT devices.

[0301] As one embodiment, the UE 201 comprises a mobile phone.

[0302] As one embodiment, the UE 201 is a vehicle, including a car.

[0303] As one embodiment, the wireless link from the UE 201 to the Device 241 is a downlink, which is configured to perform downlink transmission.

[0304] As one embodiment, the wireless link from the Device 241 to the UE 201 is an uplink, which is configured to perform uplink transmission.

[0305] As one embodiment, the wireless link between the Device 241 and the UE 201 comprises a link dedicated for exchanging Ambient IoT signaling and Ambient IoT data.

[0306] As one embodiment, the Device 241 and the UE 201 are connected through a PC5 air interface.

[0307] As one embodiment, the Device 241 and the UE 201 are connected through a Uu air interface.

[0308] As one embodiment, the transmitter of the first wireless signal in the present application comprises the UE 201.

[0309] As one embodiment, the receiver of the first wireless signal in the present application comprises the Device 241.

[0310] As one embodiment, the transmitter of the second wireless signal in the present application comprises the Device 241.

[0311] As an embodiment, the receiver of the second wireless signal described in this application includes the UE 201.

[0312] As an embodiment, the Device 241 supports at least Ambient IoT technology.

[0313] As an embodiment, the Device 241 supports at least backscatter communication technology.

[0314] As an embodiment, the UE 201 supports at least Ambient IoT technology.

[0315] As an embodiment, the UE 201 supports at least backscatter communication technology.

[0316] As an embodiment, the UE 201 supports 5G system.

[0317] As an embodiment, the Device 241 supports 5G system.

[0318] As an embodiment, the UE 201 supports at least 6G system.

[0319] As an embodiment, the Device 241 supports at least 6G system.

[0320] Embodiment 3

[0321] Embodiment 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture of user plane and control plane according to an embodiment of the present application, as shown in FIG. 3.

[0322] Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3 shows the radio protocol architecture for the control plane 300 between a first communication node device (UE or RSU (Road Side Unit) in V2X (Vehicle to Everything), a vehicle mounted device or a vehicle mounted communication module) and a second node device (gNB, UE or RSU in V2X, a vehicle mounted device or a vehicle mounted communication module), or between two UEs, using three layers: Layer 1 (L1), Layer 2 (L2) and Layer 3 (L3). L1 is the lowest layer and implements various PHY (PHYsical layer) signal processing functions. L1 will be referred to as the PHY 301 in this document. Layer 2 305 is above the PHY 301 and is responsible for the link between the first node device and the second node device, or between two UEs, through the PHY 301. Layer 2 305 includes a MAC (Medium Access Control) sublayer 302, a RLC (Radio Link Control) sublayer 303 and a PDCP (Packet Data Convergence Protocol) sublayer 304, which are terminated at the second node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security, by encrypting packets, and handover support for the first communication node device between second communication node devices. The RLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat reQuest). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating the various radio resources (e.g., resource blocks) in one cell among the UEs. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device.The radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2), which are substantially the same as the corresponding layers and sublayers in the control plane 300 for the first communication node device and the second communication node device for the physical layer 351, the PDCP sublayer 354 in L2 355, the RLC sublayer 353 in L2 355, and the MAC sublayer 352 in L2 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead. Also included in L2 355 in the user plane 350 is the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS (Quality of Service) flows and data radio bearers (DRBs) to support diverse traffic. Although not illustrated, the first communication node device can have several upper layers above L2 355, including a network layer (e.g., IP (Internet Protocol) layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., a remote UE, a server, etc.).

[0323] As one embodiment, the radio protocol architecture in FIG. 3 is applicable to the first node in the present application.

[0324] As one embodiment, the first communication node device comprises an Ambient IoT function controller.

[0325] As one embodiment, the control plane 300 further comprises an Ambient IoT layer for interaction of control data between the Ambient IoT function controller; it is noted that the Ambient IoT layer does not limit other names that can exist.

[0326] As one embodiment, the user plane 350 further comprises an Ambient IoT layer for interaction of user data between the Ambient IoT function controller; it is noted that the Ambient IoT layer does not limit other names that can exist.

[0327] As one embodiment, the Ambient IoT layer is above the RRC sublayer 306.

[0328] As one embodiment, the Ambient IoT layer is above the SDAP sublayer 356.

[0329] As an embodiment, in case the second communication node device is an Ambient IoT device, the control plane 300 only comprises the MAC sublayer 302 and the PHY 301.

[0330] As an embodiment, in case the second communication node device is an Ambient IoT device, the control plane 300 only comprises the Ambient IoT layer, the MAC sublayer 302 and the PHY 301.

[0331] As an embodiment, in case the second communication node device is an Ambient IoT device, the user plane 350 only comprises the MAC sublayer 352 and the PHY 351.

[0332] As an embodiment, in case the second communication node device is an Ambient IoT device, the user plane 350 only comprises the Ambient IoT layer, the MAC sublayer 352 and the PHY 351.

[0333] As an embodiment, the first wireless signal is generated at the PHY 301, or the MAC sublayer 302, or the PHY 351, or the MAC sublayer 352.

[0334] As an embodiment, the first wireless signal is generated at the Ambient IoT layer.

[0335] As an embodiment, the first wireless signal is generated at the RRC sublayer 306.

[0336] As an embodiment, the first wireless signal is generated at the PHY 301 or the PHY 351.

[0337] As an embodiment, the second wireless signal is generated at the PHY 301 or the PHY 351.

[0338] As an embodiment, the higher layer in the present application refers to a layer above the physical layer.

[0339] As an embodiment, the higher layer in the present application comprises the RRC layer.

[0340] As an embodiment, the higher layer signaling in the present application comprises the RRC IE.

[0341] As an embodiment, the higher layer signaling in the present application comprises the RRC message.

[0342] As one embodiment, the higher layer described in the present application comprises a MAC layer.

[0343] As one embodiment, the higher layer signaling described in the present application comprises a MAC CE.

[0344] Embodiment 4

[0345] Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to one embodiment of the present application, as shown in FIG. 4. FIG. 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0346] The first communication device 410 comprises a controller / processor 475, a memory 476, a receive processor 470, a transmit processor 416, a multi-antenna receive processor 472, a multi-antenna transmit processor 471, a transmitter / receiver 418, and an antenna 420.

[0347] The second communication device 450 comprises a controller / processor 459, a memory 460, a data source 467, a transmit processor 468, a receive processor 456, a multi-antenna transmit processor 457, a multi-antenna receive processor 458, a transmitter / receiver 454, and an antenna 452.

[0348] In transmissions from the first communication device 410 to the second communication device 450, at the first communication device 410, upper layer packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements functionality of L2. In DL, the controller / processor 475 provides header compression, ciphering, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocations for second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for Ll (i.e., physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450 and mapping onto signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-ary phase shift keying (M-PSK), M-ary quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial pre-coding of the coded and modulated symbols, including codebook-based and non-codebook-based pre-coding and beamforming processing, to generate one or more parallel streams. The transmit processor 416 then maps to each of the parallel streams to subcarriers, multiplexes the modulated symbols in time domain and / or frequency domain with reference signals (e.g., pilot) and then performs an inverse fast Fourier transform (IFFT) to generate time domain multicarrier symbol streams. The multi-antenna transmit processor 471 then performs transmit analog pre-coding / beamforming operations on the time domain multicarrier symbol streams. Each transmitter 418 converts the baseband multicarrier symbol streams provided by the multi-antenna transmit processor 471 into radio frequency signals that are transmitted via the corresponding antennas 420.

[0349] In transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its respective antenna 452. Each receiver 454 recovers information modulated onto an RF carrier and converts the RF stream into a baseband multi-carrier symbol stream that provides to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various signal processing functions of the LI. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operation on the baseband multi-carrier symbol stream from the receivers 454. The receive processor 456 converts the baseband multi-carrier symbol stream from the receive analog precoding / beamforming operation from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signals and the reference signals are demultiplexed by the receive processor 456, where the reference signals will be used for channel estimation, and the data signals are recovered after multi-antenna detection in the multi-antenna receive processor 458 for any parallel streams destined to the second communication device 450. The symbols on each parallel stream are demodulated and recovered in the receive processor 456 and generate soft decisions. The receive processor 456 then decodes and de-interleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channels. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2. The controller / processor 459 can be associated with a memory 460 that stores program codes and data. The memory 460 can be referred to as a computer-readable medium. In the DL, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2. Various control signals can also be provided to the L3 for L3 processing. The controller / processor 459 is also responsible for error detection using an ACK and / or negative ACK (NACK) protocol to support HARQ operations.

[0350] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper layer data packets to a controller / processor 459. The data source 467 represents all protocol layers above L2. Similar to the transmit function described at the first communication device 410 in the DL, the controller / processor 459 implements header compression, ciphering, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocations for the first communication device 410, implements L2 layer functionality for the user plane and control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communication device 410. A transmit processor 468, under the control of the controller / processor 459, performs modulation mapping, channel coding processing, and a multi-antenna transmit processor 457 performs digital multi-antenna spatial processing, including codebook-based and non-codebook-based precoding, and beamforming processing, and then the transmit processor 468 modulates the generated parallel streams into multiple carrier / signal streams, which are then provided to different antennas 452 via the transmitters 454 after analog precoding / beamforming operations in the multi-antenna transmit processor 457. Each transmitter 454 first converts the baseband symbol stream into a RF signal and then provides the RF signal to the antenna 452.

[0351] In the transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the functionality described in connection with the reception at the second communication device 450 in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives a signal through its respective antenna 420, converts the received signal into a baseband signal, and provides the baseband signal to a multi-antenna receive processor 472 and a receive processor 470. The receive processor 470 and the multi-antenna receive processor 472, together, implement the functionality of L1. A controller / processor 475 implements the functionality of L2. The controller / processor 475 can be associated with a memory 476 that stores program codes and data. The memory 476 can be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer data packets from the second communication device 450. Upper layer data packets from the controller / processor 475 can be provided to a core network. The controller / processor 475 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0352] As one embodiment, the first node described in the present application comprises the first communication device 410.

[0353] As one embodiment, the second node described in the present application comprises the second communication device 450.

[0354] As an embodiment, the device structure of the second communication device 450 comprises part or all of the embodiment 10 in the present application.

[0355] As an embodiment, the first communication device 410 comprises at least one processor and at least one memory including computer program code; the at least one memory and the computer program code are configured to, with the at least one processor, cause the first communication device 410 to transmit the first wireless signal in the present application in the first set of time domain resources in the present application; the first wireless signal comprises paging related information; the receiver of the first wireless signal comprises the second communication device 450; the time domain location of the first set of time domain resources depends on whether the second communication device 450 is in a connected state; the second communication device 450 being in a connected state comprises at least one of the following: the second communication device 450 is configured with an ID by the first communication device 410 or a network side; the second communication device 450 is authorized by the first communication device 410 or a network side; the second communication device 450 has communicated with the first communication device 410 or a network side in a first time window, the first time window being predefined or configured; the second communication device 450 is registered with the first communication device 410 or a network side.

[0356] As an embodiment, the first communication device 410 comprises a memory storing a computer readable program of instructions which, when executed by at least one processor, causes actions comprising: transmitting the first wireless signal in the present application in the first set of time domain resources in the present application.

[0357] As an embodiment, the second communication device 450 comprises: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the second communication device 450 to perform at least the following: receive the first wireless signal in the first set of time domain resources in the application; the first wireless signal comprises paging related information; the sender of the first wireless signal comprises the first communication device 410; the time domain location of the first set of time domain resources depends on whether the second communication device 450 is in a connected state; the second communication device 450 being in a connected state comprises at least one of: the second communication device 450 being configured with an ID by the first communication device 410 or a network side; the second communication device 450 being authorized by the first communication device 410 or a network side; the second communication device 450 communicating with the first communication device 410 or a network side in a first time window, the first time window being predefined or configured; the second communication device 450 being registered with the first communication device 410 or a network side.

[0358] As an embodiment, the second communication device 450 comprises: a memory storing a program of computer readable instructions to produce actions when executed by at least one processor, the actions comprising: receiving the first wireless signal in the first set of time domain resources in the application.

[0359] As an embodiment, at least one of {the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller / processor 475, the memory 476} is configured to transmit the first wireless signal in the first set of time domain resources in the application; at least one of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460, the data source 467} is configured to receive the first wireless signal in the first set of time domain resources in the application.

[0360] As an embodiment, at least one of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, the memory 460, the data source 467} is configured to transmit the second wireless signal in the second set of time domain resources in the present application; at least one of {the antenna 420, the receiver 418, the receive processor 470, the multi-antenna receive processor 472, the controller / processor 475, the memory 476} is configured to receive the second wireless signal in the second set of time domain resources in the present application.

[0361] It is particularly pointed out that the structure of the first communication device 410 in the present example does not limit the specific implementation form of the first node in the present application. Specifically, according to different functions and actual application scenarios of the first node device, the first node can adopt the structure of the first communication device 410 in the present example, can include only part of the modules in the structure of the first communication device 410 in the present example, and can also include other modules not shown in FIG. 4.

[0362] It is particularly pointed out that the structure of the second communication device 450 in the present example does not limit the specific implementation form of the second node in the present application. Specifically, according to different functions and actual application scenarios of the second node device, the second node can adopt the structure of the second communication device 450 in the present example, can include only part of the modules in the structure of the second communication device 450 in the present example, and can also include other modules not shown in FIG. 4.

[0363] Embodiment 5

[0364] Embodiment 5 illustrates a flowchart of the transmission between the first node and the second node according to an embodiment of the present application, as shown in FIG. 5. In FIG. 5, the first node U1 communicates with the second node D2 through a wireless link; the steps in block 51 are optional. It is particularly pointed out that the order in the present embodiment does not limit the order of signal transmission and implementation in the present application.

[0365] For the first node U1, the first wireless signal is transmitted in the first set of time domain resources in step S510; the second wireless signal is received in the second set of time domain resources in step S5110.

[0366] For the second node D2, the first wireless signal is received in the first set of time domain resources in step S520; the second wireless signal is transmitted in the second set of time domain resources in step S5210.

[0367] In embodiment 5, the first wireless signal comprises paging related information; the time domain location of the first set of time domain resources depends on whether the second node D2 is in a connected state; the second node D2 being in a connected state comprises at least one of:

[0368] - the second node D2 being configured with an ID by the first node U1 or a network side;

[0369] - the second node D2 being authorized by the first node U1 or a network side;

[0370] - the second node D2 having communicated with the first node U1 or a network side in a first time window, the first time window being predefined or configured;

[0371] - the second node D2 being registered with the first node U1 or a network side.

[0372] As an embodiment, the first node U1 is the first node as described in the present application.

[0373] As an embodiment, the second node D2 is the second node as described in the present application.

[0374] As an embodiment, the air interface between the first node U1 and the second node D2 comprises a wireless interface between a base station device and a UE.

[0375] As an embodiment, the air interface between the first node U1 and the second node D2 comprises a wireless interface between a UE and a UE.

[0376] As an embodiment, the air interface between the first node U1 and the second node D2 comprises a wireless interface between a base station device and an Ambient IoT device.

[0377] As an embodiment, the air interface between the first node U1 and the second node D2 comprises a wireless interface between a UE and an Ambient IoT device.

[0378] As an embodiment, the air interface between the first node U1 and the second node D2 comprises a wireless interface between a reader device and an Ambient IoT device.

[0379] As an embodiment, the first node U1 and the second node D2 communicate over a Uu interface.

[0380] As an embodiment, the first node U1 and the second node D2 communicate over a PC5 interface.

[0381] As one embodiment, the logical channel occupied by the first wireless signal comprises a PCH (Paging CHannel).

[0382] As one embodiment, the logical channel occupied by the first wireless signal comprises a PCCH.

[0383] As one embodiment, the physical layer channel occupied by the first wireless signal comprises a PDCCH.

[0384] As one embodiment, the physical layer channel occupied by the first wireless signal comprises a PDSCH.

[0385] As one embodiment, the physical layer channel occupied by the first wireless signal comprises a PRDCH (Physical Reader-to-Device CHannel).

[0386] As one embodiment, the step in block 51 in FIG. 5 exists, the method applied to the first node in the present application comprises: receiving a second wireless signal in a second time domain resource set; the time domain position of the second time domain resource set depends on the time domain position of the first time domain resource set; the first wireless signal triggers the sending of the second wireless signal.

[0387] As one embodiment, the second time domain resource set comprises at least one time slot.

[0388] As one embodiment, the second time domain resource set comprises at least one multicarrier symbol.

[0389] As one embodiment, the second time domain resource set comprises a plurality of chips.

[0390] As one embodiment, the second time domain resource set comprises a plurality of OOK (On-Off Keying) time units.

[0391] As one embodiment, the second wireless signal occupies continuous time domain resources.

[0392] As one embodiment, the second wireless signal occupies a plurality of continuous chips.

[0393] As one embodiment, the second wireless signal occupies a plurality of continuous OOK time units.

[0394] As one embodiment, one multicarrier symbol in the present application comprises a plurality of continuous chips.

[0395] As one embodiment, an OOK time unit as described herein comprises a duration of one OOK chip.

[0396] As one embodiment, a chip as described herein comprises a duration of one low level or one high level.

[0397] As one embodiment, a chip as described herein comprises a duration of one OOK time unit.

[0398] As one embodiment, an OOK time unit as described herein comprises one OOK chip.

[0399] As one embodiment, an OOK time unit as described herein comprises one half of one OOK chip.

[0400] As one embodiment, an OOK time unit as described herein is a continuous time.

[0401] As one embodiment, an OOK time unit as described herein comprises a duration of a string of high level sample points or a string of low level sample points.

[0402] As one embodiment, an OOK time unit as described herein comprises a duration of one high level or a duration of one low level.

[0403] As one embodiment, an OOK time unit as described herein comprises a minimum duration of one high level or one low level.

[0404] As one embodiment, an OOK time unit as described herein comprises a minimum duration of one high level envelope or one low level envelope.

[0405] As one embodiment, an OOK time unit as described herein comprises twice a minimum duration of one high level or one low level.

[0406] As one embodiment, an OOK time unit as described herein comprises a time unit occupied by one bit after linear coding.

[0407] As one embodiment, an OOK time unit as described herein comprises a duration of one high level envelope or one low level envelope.

[0408] As one embodiment, an OOK time unit as described herein comprises a time unit mapped by one bit after linear coding.

[0409] As an embodiment, one OOK time unit as described in the present application comprises a time unit mapped by one bit without linear coding or Manchester coding.

[0410] As an embodiment, one OOK time unit as described in the present application comprises a time length corresponding to or mapped by one OOK bit.

[0411] As an embodiment, one OOK time unit as described in the present application comprises half of a time length corresponding to one OOK bit.

[0412] As an embodiment, one OOK time unit as described in the present application comprises a duration of “01” or “10” in Manchester coding.

[0413] As an embodiment, one OOK time unit as described in the present application comprises a duration of “1” or “0” in Manchester coding.

[0414] As an embodiment, one OOK time unit as described in the present application comprises a total duration of high and low levels corresponding to one information bit in Manchester coding.

[0415] As an embodiment, one OOK time unit as described in the present application comprises a minimum duration of one high level or one low level in Manchester coding.

[0416] As an embodiment, one OOK time unit as described in the present application comprises a duration of one bit or one high level or one low level after Manchester coding.

[0417] As an embodiment, the second wireless signal is a feedback to the first wireless signal.

[0418] As an embodiment, the second wireless signal is a response of the second node D2 to the first wireless signal.

[0419] As an embodiment, the second node D2 transmits the second wireless signal in the second set of time domain resources as a response to the first wireless signal.

[0420] As an embodiment, the first wireless signal triggers the transmission of the second wireless signal.

[0421] As an embodiment, the first wireless signal is an excitation signal of the second node D2, and the second wireless signal is a reflection of the excitation signal.

[0422] As an embodiment, the first wireless signal is an excitation signal of the second node D2, and the second wireless signal is a backscattering of the excitation signal.

[0423] As one embodiment, the second wireless signal is for initiating a random access procedure for the second node D2.

[0424] As one embodiment, the second wireless signal is for random access of the second node D2.

[0425] As one embodiment, the first wireless signal triggers a random access procedure of the second node D2, the random access procedure of the second node D2 comprising transmitting the second wireless signal in the second set of time domain resources.

[0426] As one embodiment, the random access procedure is a CBRA (Contention-Based Random Access) procedure.

[0427] As one embodiment, the random access procedure is a slotted-ALOHA based access procedure.

[0428] As one embodiment, the second wireless signal comprises a Msg 1 (Message 1).

[0429] As one embodiment, the second wireless signal comprises a Msg A (Message A).

[0430] As one embodiment, the second wireless signal comprises a preamble.

[0431] As one embodiment, the second wireless signal comprises a RACH (Random Access CHannel).

[0432] As one embodiment, the second wireless signal comprises a D2R (Device-to-Reader) preamble.

[0433] As one embodiment, the second wireless signal comprises a D2R timing acquisition signal.

[0434] As one embodiment, the second set of time domain resources depends on the time domain position of the first set of time domain resources in the sense that the time domain position of the first set of time domain resources is used to determine the time domain position of the second set of time domain resources.

[0435] As an embodiment, the meaning that the time domain position of the second set of time domain resources depends on the time domain position of the first set of time domain resources comprises that the time domain position of the first set of time domain resources is used to determine a plurality of candidate time domain positions, and the time domain position of the second set of time domain resources is one of the plurality of candidate time domain positions.

[0436] As a sub-embodiment of the embodiment, the time domain position of the second set of time domain resources is any one of the plurality of candidate time domain positions.

[0437] As a sub-embodiment of the embodiment, the second node D2 randomly selects the second set of time domain resources from the plurality of candidate time domain positions.

[0438] As a sub-embodiment of the embodiment, the second node D2 implements correlation to select the second set of time domain resources from the plurality of candidate time domain positions.

[0439] As a sub-embodiment of the embodiment, the first node U1 indicates the second set of time domain resources from the plurality of candidate time domain positions. As an embodiment, the meaning that the time domain position of the second set of time domain resources depends on the time domain position of the first set of time domain resources comprises that the time domain position of the second set of time domain resources is not earlier than the time domain position of the first set of time domain resources plus a first time offset value.

[0440] As a sub-embodiment of the embodiment, the first time offset value is fixed, or the first time offset value is predefined.

[0441] As a sub-embodiment of the embodiment, the first time offset value depends on the second node D2.

[0442] As a sub-embodiment of the embodiment, the first time offset value is indicated by the first wireless signal.

[0443] As a sub-embodiment of the embodiment, the first time offset value is indicated by control information, and a physical layer channel occupied by the control information is PRDCH.

[0444] As an embodiment, the meaning that the time domain position of the second set of time domain resources depends on the time domain position of the first set of time domain resources comprises that the time domain position of the second set of time domain resources is not later than the time domain position of the first set of time domain resources plus a second time offset value.

[0445] As a sub-embodiment of the embodiment, the second time offset value is fixed, or the second time offset value is predefined.

[0446] As a sub-embodiment of the embodiment, the second time offset value depends on the second node D2.

[0447] As a sub-embodiment of the embodiment, the second time offset value is indicated by the first wireless signal.

[0448] As a sub-embodiment of the embodiment, the second time offset value is indicated by control information, and a physical layer channel occupied by the control information is PRDCH.

[0449] As an embodiment, a physical layer channel occupied by the second wireless signal includes PRACH (Physical Random Access CHannel).

[0450] As an embodiment, a physical layer channel occupied by the second wireless signal includes PDRCH (Physical Device-to-Reader CHannel).

[0451] As an embodiment, the step S510 is before the step S5110; and the step S520 is before the step S5210.

[0452] Embodiment 6

[0453] Embodiment 6 illustrates a schematic diagram of two cases of time domain position of the first time domain resource set according to an embodiment of the present application, as shown in FIG. 6. In FIG. 6, case (a) represents that the second node is in a connected state, and the first time domain resource set belongs to a first time domain resource pool; case (b) represents that the second node is not in a connected state, and the first time domain resource set belongs to a second time domain resource pool.

[0454] In embodiment 6, the first time domain resource pool and the second time domain resource pool are different.

[0455] As an embodiment, the first time domain resource pool includes multiple radio frames.

[0456] As an embodiment, the first time domain resource pool includes multiple slots.

[0457] As an embodiment, the first time domain resource pool includes multiple POs.

[0458] As an embodiment, the first time domain resource pool includes multiple PFs.

[0459] As an embodiment, the first time domain resource pool includes multiple POs corresponding to multiple PFs.

[0460] As an embodiment, the first time-domain resource pool comprises PDCCH MO(s) associated with one or more POs of the first node.

[0461] As an embodiment, the second time-domain resource pool comprises a plurality of radio frames.

[0462] As an embodiment, the second time-domain resource pool comprises a plurality of slots.

[0463] As an embodiment, the second time-domain resource pool comprises a plurality of POs.

[0464] As an embodiment, the second time-domain resource pool comprises a plurality of PFs.

[0465] As an embodiment, the second time-domain resource pool comprises a plurality of POs corresponding to a plurality of PFs.

[0466] As an embodiment, the second time-domain resource pool comprises PDCCH MO(s) associated with one or more POs of the first node.

[0467] As an embodiment, the first time-domain resource pool and the second time-domain resource pool being different means that time-domain resources occupied by the first time-domain resource pool and time-domain resources occupied by the second time-domain resource pool are orthogonal in time domain.

[0468] As an embodiment, the first time-domain resource pool and the second time-domain resource pool being different means that at least one slot does not simultaneously belong to time-domain resources occupied by the first time-domain resource pool and time-domain resources occupied by the second time-domain resource pool.

[0469] As an embodiment, the first time-domain resource pool and the second time-domain resource pool being different means that at least one PF does not simultaneously belong to time-domain resources occupied by the first time-domain resource pool and time-domain resources occupied by the second time-domain resource pool.

[0470] As an embodiment, the first time-domain resource pool and the second time-domain resource pool being different means that at least one PO does not simultaneously belong to time-domain resources occupied by the first time-domain resource pool and time-domain resources occupied by the second time-domain resource pool.

[0471] As an embodiment, the first time-domain resource pool and the second time-domain resource pool being different means that the first time-domain resource pool comprises part of POs included in one or more PFs; and the second time-domain resource pool comprises remaining POs included in the one or more PFs.

[0472] As an embodiment, the first time domain resource pool and the second time domain resource pool being different means that the first time domain resource pool comprises part of POs included in one DRX cycle of the first node, and the second time domain resource pool comprises the remaining POs included in the one DRX cycle of the first node.

[0473] As an embodiment, the first time domain resource pool and the second time domain resource pool being different means that the first time domain resource pool comprises part of PDCCH MOs included in one or more POs, and the second time domain resource pool comprises the remaining PDCCH MOs included in the one or more POs.

[0474] Embodiment 7

[0475] Embodiment 7 illustrates a schematic diagram of the relationship between the first time domain resource pool and the second time domain resource pool and a second node according to an embodiment of the present application, as shown in FIG. 7. In FIG. 7, the position of the time domain resource occupied by the first time domain resource pool and the position of the time domain resource occupied by the second time domain resource pool both depend on the ID of the second node.

[0476] As an embodiment, the second node is in a connected state, and the ID of the second node is configured by the first node.

[0477] As an embodiment, the second node is in a connected state, and the ID of the second node is configured by the network side.

[0478] As an embodiment, the second node is not in a connected state, and the ID of the second node is equal to 0.

[0479] As an embodiment, the ID of the second node is equal to the identity of the second node modulo 1024.

[0480] As a sub-embodiment of this embodiment, the identity of the second node is the TMSI (Temporary Mobile Subscriber Identity) of the second node.

[0481] As a sub-embodiment of this embodiment, the identity of the second node is the S-TMSI (Short Term Mobile Subscriber Identity) of the second node.

[0482] As a sub-embodiment of this embodiment, the identity of the second node is the 5G-S-TMSI of the second node.

[0483] As one sub-embodiment of the embodiment, the identity of the second node is a 6G-S-TMSI of the second node.

[0484] As one sub-embodiment of the embodiment, the identity of the second node is an AmIOT-TMSI of the second node.

[0485] As one embodiment, the position of the PF corresponding to the first time domain resource pool depends on the value of ID mod N of the second node.

[0486] As one embodiment, the position of the PF corresponding to the second time domain resource pool depends on the value of ID mod N of the second node.

[0487] As one sub-embodiment of the above two embodiments, the N is a positive integer greater than 1.

[0488] As one sub-embodiment of the above two embodiments, the N is the number of PFs in one DRX cycle of the second node.

[0489] As one sub-embodiment of the above two embodiments, the N is the number of PFs in one ON cycle of the second node.

[0490] As one embodiment, the position of the PF corresponding to the first time domain resource pool and the position of the PF corresponding to the second time domain resource pool are both represented by the following formula:

[0491] (SFN+PF_offset) mod T = (T div N)*(ID mod N);

[0492] Wherein, the SFN corresponds to the first time domain resource pool and the PF occupied by the first time domain resource pool, the PF_offset is an offset value, the T is the DRX cycle of the second node or the T is one ON cycle of the second node, the N is the number of PFs in one DRX cycle of the second node or the N is the number of PFs in one ON cycle of the second node, and the ID corresponds to the ID of the second node.

[0493] As one embodiment, the position of the PO corresponding to the first time domain resource pool in the corresponding PF depends on the value of (ID div N) mod N after the value of ID div N is rounded down. S

[0494] As one embodiment, the position of the PO corresponding to the second time domain resource pool in the corresponding PF depends on the value of (ID div N) mod N after the value of ID div N is rounded down. S

[0495] ​​As a sub-embodiment of the above two embodiments, the N S is a positive integer greater than 1.

[0496] As a sub-embodiment of the above two embodiments, the N S is the number of POs in one PF of the second node.

[0497] As an embodiment, the position of the PO corresponding to the first time domain resource pool in the corresponding PF and the position of the PO corresponding to the second time domain resource pool in the corresponding PF are both represented by the following formula:

[0498] i_s = floor(ID / N) mod N S ;

[0499] wherein the i_s represents the index of a PO in the corresponding PF, the N S is the number of POs in one PF of the second node, the N is the number of PFs in one DRX cycle of the second node or the N is the number of PFs in one ON cycle of the second node, and the ID corresponds to the ID of the second node.

[0500] As an embodiment, the position of the PF corresponding to the first time domain resource pool is represented by the following formula:

[0501] (SFN+PF_offset_1) mod T = (T div N)*(ID mod N);

[0502] wherein the SFN corresponds to the PF occupied by the first time domain resource pool, the PF_offset_1 is an offset value configured for the first time domain resource pool, the T is the DRX cycle of the second node or the T is one ON cycle of the second node, the N is the number of PFs in one DRX cycle of the second node or the N is the number of PFs in one ON cycle of the second node, and the ID corresponds to the ID of the second node.

[0503] As an embodiment, the position of the PF corresponding to the second time domain resource pool is represented by the following formula:

[0504] (SFN+PF_offset_2) mod T = (T div N)*(ID mod N);

[0505] Wherein, SFN corresponds to the PF occupied by the second time-domain resource pool, PF_offset_2 is the offset value configured for the second time-domain resource pool, T is the DRX period of the second node or T is one ON period of the second node, N is the number of PFs in one DRX period of the second node or N is the number of PFs in one ON period of the second node, and ID corresponds to the ID of the second node.

[0506] As an example, the position of the PO corresponding to the first time-domain resource pool in the corresponding PF is represented by the following formula:

[0507] i_s=[floor(ID / N)+PO_Offset_1]mod N S ;

[0508] Wherein, i_s represents the index of a PO in the corresponding PF, PO_offset_1 is the offset value configured for the first time-domain resource pool, and N S N is the number of POs in a PF of the second node, N is the number of PFs in a DRX cycle of the second node or N is the number of PFs in an ON cycle of the second node, and ID corresponds to the ID of the second node.

[0509] As an example, the position of the PO corresponding to the second time-domain resource pool in the corresponding PF is represented by the following formula:

[0510] i_s=[floor(ID / N)+PO_Offset_2]mod N S ;

[0511] Where i_s represents the index of a PO in the corresponding PF, PO_offset_2 is the offset value configured for the second time-domain resource pool, and N S N is the number of POs in a PF of the second node, N is the number of PFs in a DRX cycle of the second node or N is the number of PFs in an ON cycle of the second node, and ID corresponds to the ID of the second node.

[0512] Example 8

[0513] Example 8 illustrates a schematic diagram of the relationship between a first time-domain resource pool, a second time-domain resource pool, and a first node according to an embodiment of this application, as shown in Figure 8. In Figure 8, the positions of the time-domain resources occupied by the first time-domain resource pool and the positions of the time-domain resources occupied by the second time-domain resource pool both depend on the ID of the first node.

[0514] As one embodiment, the ID of the first node is equal to an identity of the first node.

[0515] As one embodiment, the ID of the first node is equal to a UE_ID of the first node.

[0516] As one embodiment, the ID of the first node is equal to an identity of the first node modulo 1024.

[0517] As one sub-embodiment of the above three embodiments, the identity of the first node is a TMSI of the first node.

[0518] As one sub-embodiment of the above three embodiments, the identity of the first node is a S-TMSI of the first node.

[0519] As one sub-embodiment of the above three embodiments, the identity of the first node is a 5G-S-TMSI of the first node.

[0520] As one sub-embodiment of the above three embodiments, the identity of the first node is a 6G-S-TMSI of the first node.

[0521] As one embodiment, the ID of the first node is used to determine a location of time domain resources occupied by the first time domain resource pool and a location of time domain resources occupied by the second time domain resource pool.

[0522] As one embodiment, PF_offset in the present application depends on the ID of the first node.

[0523] As one embodiment, PF_offset_1 in the present application depends on the ID of the first node.

[0524] As one embodiment, PF_offset_2 in the present application depends on the ID of the first node.

[0525] As one embodiment, PO_offset_1 in the present application depends on the ID of the first node.

[0526] As one embodiment, PO_offset_2 in the present application depends on the ID of the first node.

[0527] Embodiment 9

[0528] Embodiment 9 illustrates a schematic diagram of a first time value according to an embodiment of the present application, as shown in FIG. 9. In FIG. 9, the gray solid-filled rectangle includes time domain resources occupied by the first set of time domain resources, the diamond cross-filled rectangle includes time domain resources occupied by the second set of time domain resources, and a time interval between the first set of time domain resources and the second set of time domain resources is not less than the first time value.

[0529] In embodiment 9, the first time value depends on whether the second node is in a connected state.

[0530] As an embodiment, a unit of the first time value is a time slot.

[0531] As an embodiment, a unit of the first time value is a multi-carrier symbol.

[0532] As an embodiment, a unit of the first time value is a millisecond.

[0533] As an embodiment, the first time value is a positive integer greater than 1.

[0534] As an embodiment, the first time value is equal to a duration of a positive integer greater than 1 time slots.

[0535] As an embodiment, the first time value is equal to a positive integer greater than 1 multi-carrier symbols.

[0536] As an embodiment, the first time value is equal to a positive integer greater than 1 milliseconds.

[0537] As an embodiment, the first time value is equal to a positive integer greater than 1 chips.

[0538] As an embodiment, the first time value is equal to a positive integer greater than 1 OOK time units.

[0539] As an embodiment, the first time value is equal to T R2D_min .

[0540] As an embodiment, the first time value is not less than T R2D_min .

[0541] As an embodiment, a time interval between the first set of time domain resources and the second set of time domain resources is not less than the first time value.

[0542] As an embodiment, a time interval between the second node receiving the first wireless signal and the second node transmitting the second wireless signal is not less than the first time value.

[0543] As one embodiment, the second node does not transmit the second wireless signal until a time interval between a last chip of the first wireless signal and a first chip of the second wireless signal is not less than the first time value.

[0544] As one embodiment, the second node does not transmit the second wireless signal until a time interval between a last OOK time unit of the first wireless signal and a first time unit of the second wireless signal is not less than the first time value.

[0545] As one embodiment, the first time value depends on whether the second node is in a connected state or not.

[0546] As one embodiment, the first time value equals T1 when the second node is in a connected state, and the first time value equals T2 when the second node is not in a connected state, the T1 and the T2 are not equal.

[0547] As one sub-embodiment of this embodiment, the T1 and the T2 are not less than T R2D_min .

[0548] As one sub-embodiment of this embodiment, the T1 is predefined.

[0549] As one sub-embodiment of this embodiment, the T2 is predefined.

[0550] As one sub-embodiment of this embodiment, the T1 is configured by RRC signaling.

[0551] As one sub-embodiment of this embodiment, the T2 is configured by RRC signaling.

[0552] As one sub-embodiment of this embodiment, the T1 is indicated by the first wireless signal.

[0553] As one sub-embodiment of this embodiment, the T2 is indicated by the first wireless signal.

[0554] As one sub-embodiment of this embodiment, the T1 and the T2 are indicated by control information, the control information is transmitted on a PRDCH.

[0555] Embodiment 10

[0556] Embodiment 10 illustrates a schematic diagram of an Ambient IoT device structure according to one embodiment of the present application, as shown in FIG. 10.

[0557] In FIG. 10, an Ambient IoT device includes an antenna 1001, an energy related module 1004, a processing related module 1008. The Ambient IoT device can also include a matching network 1002 for impedance between the matching antenna 1001 and other components. The Ambient IoT device can also include an energy harvester (EH), which can be a radio frequency energy harvester 1003 or an energy harvester (non-radio frequency) 1007. The radio frequency energy harvester 1003 can include a rectifier that performs RF signal (including AC (Alternating Current)) to DC (Direct Current) conversion. The radio frequency energy harvester 1003 and receiver / transmitter can share the antenna 1001 or use independent antennas. The energy related module 1004 can include a power management unit (PMU) 1005 and an energy storage 1006; the power management unit 1005 is responsible for storing energy from the energy harvester to the energy storage 1006 and powering active component blocks that need power supply; the energy storage 1006 stores the energy collected from the energy harvester, and the energy storage 1006 can be a capacitor.

[0558] The processing related blocks 1008 can include BB (Base Band) logic 1013, memory 1018 and clock generator 1019; the BB logic 1013 can include decoder 1014, controller 1015 and encoder 1016; the memory 1018 can include two types, one is NVM (Non-Volatile Memory) such as EEPROM (Electrically Erasable Programmable Read Only Memory) for permanent storage of device ID; one is register for temporary storage of information temporarily needed for operation only when energy is available in the energy storage 1006; the clock generator 1019 provides required clock signals. The processing related blocks 1008 can also include reception related blocks 1009 and transmission related blocks 1017, which can include different blocks for different Ambient IoT devices.

[0559] As an embodiment, for an Ambient IoT device with peak power consumption of about 1 μW, the reception related blocks 1009 can include RF BPF 1010, RF Envelope Detector (RF-ED), BB LPF 1011 and comparator 1012. The transmission related blocks 1017 can include backscatter modulator.

[0560] As an embodiment, for an Ambient IoT device with peak power consumption of about 1 μW, the reception related blocks 1009 can include RF BPF 1010, RF Envelope Detector (RF-ED), BB LPF 1011 and comparator 1012. The transmission related blocks 1017 can include backscatter modulator.

[0561] As an embodiment, for Ambient IoT devices with peak power consumption less than or equal to a few hundred microwatts (μW), if an external carrier wave is employed, the receive-related module 1009 can include an RF BPF 1010, an LNA (Low-Noise Amplifier), an RF-ED, a BB amplifier, a BB LPF 1011, and a comparator / N-bit ADC (Analog-to-Digital Converter) 1012. The transmit-related module 1017 can include a large frequency shifter (e.g., tens of megahertz), a backscatter modulator, a reflection amplifier. At least one of R2D (Reader-to-Device) / CW2D (Carrier-Wave[node]to Device) and D2R (Device-to-Reader) can be amplified by a reflection amplifier or an LNA. The large frequency shifter shifts the backscatter signal from one frequency (e.g., FDD-DL frequency) to another frequency (e.g., FDD-UL frequency).

[0562] As a non-limiting embodiment, the output of the matching network 1002 is input to the BB logic 1013 after being processed by, in order, an RF BPF 1010, an LNA, an RF-ED, a BB amplifier, a BB LPF 1011, and a comparator / N-bit ADC 1012. The output of the BB logic 1013 is transmitted by the antenna 1001 after being processed by a large frequency shifter, a backscatter modulator, and a reflection amplifier.

[0563] As an embodiment, for Ambient IoT devices with peak power consumption less than or equal to a few hundred μW, if an internally-generated carrier wave is employed and an RF-ED receiver is employed, the receive-related module 1009 can include an RF BPF 1010, an LNA, an RF-ED, a BB amplifier, a BB LPF 1011, a comparator / N-bit ADC 1012. The transmit-related module 1017 can include a transmit modulator, a digital-to-analog converter (DAC), an LPF, a mixer, an LO (Local Oscillator) / FLL ( / PLL), and a power amplifier (PA).

[0564] As a non-limiting example, the output of the matching network 1002 is processed by the RF BPF 1010, LNA, RF-ED, BB amplifier, BB LPF 1011, comparator / N-bit ADC 1012 in sequence before being input to the BB logic 1013. The output of the BB logic 1013 is processed by the transmit modulator, DAC, LPF, mixer, LO / FLL( / PLL) and PA before being transmitted by the antenna 1001.

[0565] As an example, for Ambient IoT devices with peak power consumption less than or equal to a few hundred μW, if an internally generated carrier is used and an Intermediate Frequency (IF) Envelope Detector (IF-ED) receiver is used, the receive related module 1009 can include the RF BPF 1010, LNA, mixer, IF amplifier, IF filter, IF-ED, BB amplifier, BB LPF 1011, comparator / N-bit ADC 1012. The transmit related module 1017 can include the transmit modulator, DAC, LPF, mixer, LO / FLL( / PLL) and PA. The IF amplifier amplifies the IF signal. The IF filter filters unwanted RF and LO signals. The IF-ED detects the envelope from the IF signal. The mixer in the receive related module 1009 down-converts the RF signal to the IF stage. There can be one or two mixers for the transmit and receive ends based on implementation.

[0566] As a non-limiting example, the output of the matching network 1002 is processed by the RF BPF 1010, LNA, mixer, IF amplifier, IF filter, IF-ED, BB amplifier, BB LPF 1011, comparator / N-bit ADC 1012 in sequence before being input to the BB logic 1013. The output of the BB logic 1013 is processed by the transmit modulator, DAC, LPF, mixer, LO / FLL(Frequency-Locked Loop, lock-in loop) [ / PLL(Phase-Locked Loop, phase-locked loop)] and PA before being transmitted by the antenna 1001.

[0567] As an example, for Ambient IoT devices with peak power consumption less than or equal to a few hundred μW, if an internal generated carrier is used and a Zero IF (ZIF) receiver is used, the receive related module 1009 can include an RF BPF 1010, an LNA, a mixer, a BB amplifier, a BB LPF 1011, a comparator / N-bit ADC 1012. The transmit related module 1017 can include a transmit modulator, a DAC, a LPF, a mixer, a LO / FLL[ / PLL], and a PA. The mixer in the receive related module 1009 down-converts the radio frequency signal to the BB level. There can be one or two mixers for the transmit and receive ends, based on implementation.

[0568] As a non-limiting example, the output of the matching network 1002 is processed by an RF BPF 1010, an LNA, a mixer, a BB amplifier, a BB LPF 1011, a comparator / N-bit ADC 1012, in sequence, before being input to the BB logic 1013. The output of the BB logic 1013 is processed by a transmit modulator, a DAC, a LPF, a mixer, a LO / FLL[ / PLL], and a power amplifier, before being transmitted by the antenna 1001.

[0569] In several of the above embodiments, the RF BPF 1010 is used to enhance selectivity, and the RF BPF 1010 can not be present, based on implementation. The BB LPF 1011 is used to filter out harmonics and high frequency components, and improve the input signal quality to the comparator / N-bit ADC 1012, and the BB LPF 1011 can not be present, based on implementation. The comparator / N-bit ADC 1012 is used to detect the high / low of the input signal. The backscatter modulator is used to convert impedance to a modulated backscatter signal that carries the transmit signal from the BB logic 1013. The LNA is used to improve signal strength and receive sensitivity. The RF-ED is used to detect the envelope from the radio frequency signal. The BB amplifier is used to amplify the signal to improve signal strength. The transmit modulator is used to modulate the baseband bits according to the modulation scheme; the transmit modulator can be part of the BB logic 1013. The DAC is used to convert digital signal to analog signal. The LPF is used to filter out unwanted signals. The mixer in the transmit related module 1017 is used to up-convert the baseband signal to the radio frequency range. The LO is used to generate the carrier frequency; the FLL[ / PLL] can be used for frequency synthesis, and the FLL[ / PLL] can not be present, based on implementation. The PA is used to amplify the transmit signal.

[0570] It is particularly explained that the structure of the Ambient IoT device in this example does not limit the specific implementation form of the Ambient IoT in this application. Specifically, according to different functions and actual application scenarios of the Ambient IoT device, the Ambient IoT device can adopt the structure of the Ambient IoT device in this example, can include only part of the modules in the structure of the Ambient IoT device in this example, and can also include other modules not shown in the accompanying drawing 10.

[0571] Embodiment 11

[0572] Embodiment 11 illustrates a structure block diagram of a processing device in a first node according to one embodiment of the present application, as shown in FIG. 11. In FIG. 11, the processing device 1100 in the first node includes a first receiver 1101 and a first transmitter 1102, wherein the first receiver 1101 is optional.

[0573] In embodiment 11, the first transmitter 1102 transmits a first wireless signal in a first set of time domain resources.

[0574] In embodiment 11, the first wireless signal includes paging-related information; the receiver of the first wireless signal includes a second node, and the time domain location of the first set of time domain resources depends on whether the second node is in a connected state; the second node being in a connected state includes at least one of the following:

[0575] The second node is configured with an ID by the first node or a network side;

[0576] The second node is authorized by the first node or a network side;

[0577] The second node has communicated with the first node or a network side in a first time window, and the first time window is predefined or configured;

[0578] The second node is registered with the first node or a network side.

[0579] As an embodiment, the second node is in a connected state, and the first set of time domain resources belongs to a first time domain resource pool; or the second node is not in a connected state, and the first set of time domain resources belongs to a second time domain resource pool; the first time domain resource pool and the second time domain resource pool are different.

[0580] As an embodiment, the location of the time domain resources occupied by the first time domain resource pool and the location of the time domain resources occupied by the second time domain resource pool both depend on the ID of the second node.

[0581] As an embodiment, the time domain resource occupied by the first time domain resource pool and the time domain resource occupied by the second time domain resource pool both depend on the ID of the terminal.

[0582] As an embodiment, the first receiver 1101 receives a second wireless signal in a second time domain resource set; the time domain position of the second time domain resource set depends on the time domain position of the first time domain resource set; the first wireless signal triggers the sending of the second wireless signal.

[0583] As an embodiment, the second wireless signal is for a random access procedure initiated by the second node.

[0584] As an embodiment, the time interval between the first time domain resource set and the second time domain resource set is not less than a first time value, and the first time value depends on whether the second node is in a connected state.

[0585] As an embodiment, the second node is a device using signal energized transmission.

[0586] As an embodiment, the first node 1100 is a user equipment.

[0587] As an embodiment, the first node 1100 is a terminal.

[0588] As an embodiment, the first node 1100 is a relay node device.

[0589] As an embodiment, the first node 1100 is a reader device.

[0590] As an embodiment, the first node 1100 is an energized device.

[0591] As an embodiment, the first transmitter 1101 includes at least one of {the antenna 420, the transmitter 418, the transmission processor 412, the multi-antenna transmission processor 471, the controller / processor 475, the memory 476} in Embodiment 4.

[0592] As an embodiment, the first receiver 1102 includes at least one of {the antenna 420, the receiver 418, the reception processor 470, the multi-antenna reception processor 472, the controller / processor 475, the memory 476} in Embodiment 4.

[0593] Embodiment 12

[0594] Embodiment 12 illustrates a structure block diagram of a processing apparatus in a second node according to an embodiment of the present application, as shown in FIG. 12. In FIG. 12, the processing apparatus 1200 in the second node includes a second transmitter 1201 and a second receiver 1202, wherein the second transmitter 1201 is optional.

[0595] In embodiment 12, the second receiver 1202 receives a first wireless signal in a first set of time domain resources.

[0596] In embodiment 12, the first wireless signal includes paging related information; a sender of the first wireless signal includes a first node; a time domain location of the first set of time domain resources depends on whether the second node is in a connected state; the second node is in the connected state includes at least one of:

[0597] - the second node is configured with an ID by the first node or a network side;

[0598] - the second node is authorized by the first node or the network side;

[0599] - the second node has communicated with the first node or the network side in a first time window, which is predefined or configured;

[0600] - the second node is registered with the first node or the network side.

[0601] As an embodiment, the second node is in the connected state, and the first set of time domain resources belongs to a first set of time domain resources; or, the second node is not in the connected state, and the first set of time domain resources belongs to a second set of time domain resources; the first set of time domain resources and the second set of time domain resources are different.

[0602] As an embodiment, a location of time domain resources occupied by the first set of time domain resources and a location of time domain resources occupied by the second set of time domain resources both depend on an ID of the second node.

[0603] As an embodiment, a location of time domain resources occupied by the first set of time domain resources and a location of time domain resources occupied by the second set of time domain resources both depend on an ID of the first node.

[0604] As an embodiment, the second transmitter 1201 transmits a second wireless signal in a second set of time domain resources; a time domain location of the second set of time domain resources depends on the time domain location of the first set of time domain resources; the first wireless signal triggers transmission of the second wireless signal.

[0605] As an embodiment, the second wireless signal is for a random access procedure initiated by the second node.

[0606] As one embodiment, a time interval between the first set of time domain resources and the second set of time domain resources is not less than a first time value, the first time value depending on whether the second node is in a connected state.

[0607] As one embodiment, the second node is a device employing signal energized transmission.

[0608] As one embodiment, the second node 1200 is an loT device.

[0609] As one embodiment, the second node 1200 is a passive loT device.

[0610] As one embodiment, the second node 1200 is an Ambient loT device.

[0611] As one embodiment, the second receiver 1201 includes at least one of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460, the data source 467} in embodiment 4.

[0612] As one embodiment, the second transmitter 1202 includes at least one of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, the memory 460, the data source 467} in embodiment 4.

[0613] Those skilled in the art can understand that all or part of the steps in the foregoing method can be instructed by programs to related hardware, and the programs can be stored in a computer readable storage medium, such as a read-only memory, a hard disk, an optical disk or the like. Alternatively, all or part of the steps of the foregoing embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the foregoing embodiments can be implemented in the form of hardware or in the form of a software function module, and the present application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in the present application include but are not limited to unmanned aerial vehicles, communication modules on unmanned aerial vehicles, remote control aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication devices, vehicles, vehicles, RSUs, wireless sensors, network cards, Internet of Things terminals, RFID terminals, NB-IoT (Narrow Band Internet of Things) terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, network cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base station or system device in the present application includes but is not limited to macro cellular base stations, micro cellular base stations, small cellular base stations, home base stations, relay base stations, eNBs, gNBs, TRPs, GNSS (Global Navigation Satellite System), relay satellites, satellite base stations, air base stations, RSUs, unmanned aerial vehicles, test equipment such as wireless communication devices that simulate part of the functions of base stations or signaling testers, and the like.

[0614] Those skilled in the art will understand that the application can be implemented by other specified forms without departing from the core or essential characteristics thereof. Therefore, the presently disclosed embodiments should in no way be considered as descriptive rather than limiting. The scope of the application is determined by the appended claims rather than the preceding description, and all modifications within the equivalent meaning and range of the claims are considered to be included therein.

Claims

1. A method of a terminal used for Internet of Things communication in wireless communication, characterized by, Comprising: transmitting a first wireless signal in a first set of time domain resources; wherein the first wireless signal comprises paging related information; a receiver of the first wireless signal comprises an Internet of Things device; a time domain location of the first set of time domain resources depends on whether the Internet of Things device is in a connected state; the Internet of Things device being in the connected state comprises at least one of: - the Internet of Things device being configured with an ID by the terminal or a network side; - the Internet of Things device being authorized by the terminal or the network side; - the Internet of Things device having communicated with the terminal or the network side in a first time window, the first time window being predefined or configured; - the Internet of Things device being registered with the terminal or the network side.

2. The method of claim 1, wherein, the Internet of Things device being in the connected state, the first set of time domain resources belonging to a first pool of time domain resources; or the Internet of Things device not being in the connected state, the first set of time domain resources belonging to a second pool of time domain resources; the first pool of time domain resources and the second pool of time domain resources being different.

3. The method of claim 2, wherein, positions of time domain resources occupied by the first pool of time domain resources and positions of time domain resources occupied by the second pool of time domain resources both depending on an ID of the Internet of Things device.

4. The method according to claim 2 or 3, characterized in that, positions of time domain resources occupied by the first pool of time domain resources and positions of time domain resources occupied by the second pool of time domain resources both depending on an ID of the terminal.

5. The method according to any one of claims 1 to 4, characterized in that, Comprising: receiving a second wireless signal in a second set of time domain resources; wherein a time domain location of the second set of time domain resources depends on the time domain location of the first set of time domain resources; the first wireless signal triggering transmission of the second wireless signal.

6. The method of claim 5, wherein, the second wireless signal being for an Internet of Things device initiated random access procedure.

7. The method according to claim 5 or 6, characterized in that, a time interval between the first set of time domain resources and the second set of time domain resources being no less than a first time value, the first time value depending on whether the Internet of Things device is in the connected state.

8. The method according to any one of claims 1 to 7, characterized in that, the Internet of Things device being a signal energized transmission device.

9. A terminal, comprising: one or more processors and a memory; the memory being coupled to the one or more processors, the memory being configured to store computer program codes, the computer program codes comprising computer instructions, the one or more processors invoking the computer instructions to cause the terminal to perform the method of any one of claims 1-8.

10. A method of an Internet of Things device used for Internet of Things communication in wireless communication, characterized in that, Comprising: receiving a first wireless signal in a first set of time domain resources; wherein the first wireless signal comprises paging related information; a sender of the first wireless signal comprises a terminal, a time domain location of the first set of time domain resources depends on whether the Internet of Things device is in a connected state; the Internet of Things device being in the connected state comprises at least one of: - the Internet of Things device being configured with an ID by the terminal or a network side; - the Internet of Things device being authorized by the terminal or the network side; - the Internet of Things device having communicated with the terminal or the network side in a first time window, the first time window being predefined or configured; - the Internet of Things device being registered with the terminal or the network side.

11. The method of claim 10, wherein, The Internet of Things device is in a connected state, and the first time domain resource set belongs to a first time domain resource pool; or the Internet of Things device is not in a connected state, and the first time domain resource set belongs to a second time domain resource pool. The first time domain resource pool and the second time domain resource pool are different.

12. The method of claim 11, wherein, The positions of time domain resources occupied by the first time domain resource pool and the second time domain resource pool both depend on the ID of the Internet of Things device.

13. The method according to claim 11 or 12, characterized in that, The positions of time domain resources occupied by the first time domain resource pool and the second time domain resource pool both depend on the ID of the terminal.

14. The method according to any one of claims 10 to 13, characterized in that, Comprise: Send a second wireless signal in a second time domain resource set; Wherein, the time domain position of the second time domain resource set depends on the time domain position of the first time domain resource set; the first wireless signal triggers the sending of the second wireless signal.

15. The method of claim 14, wherein, The second wireless signal is for an Internet of Things device initiated random access process.

16. The method according to claim 14 or 15, characterized in that The time interval between the first time domain resource set and the second time domain resource set is not less than a first time value, and the first time value depends on whether the Internet of Things device is in a connected state.

17. The method of any one of claims 10 to 16, wherein, The Internet of Things device is a device using signal excitation transmission.

18. An Internet of Things device, characterized in that, The Internet of Things device comprises one or more processors and a memory; The memory is coupled to the one or more processors, and the memory is used to store computer program code, the computer program code comprising computer instructions, and the one or more processors invoke the computer instructions to enable the Internet of Things device to perform the method of any one of claims 10-17.

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