A method and apparatus for wireless communication

Abstract

The application discloses a method and device for wireless communication, comprising: sending at least one paging message, a first paging message being any one of the at least one paging message, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; wherein whether random access is triggered depends on the first value comprises: random access is triggered only when the second node does not successfully initiate random access for the paging message identified by the first value. The method provided by the application is beneficial to reduce power consumption, prolong device life, reduce collision probability, save resources, improve scalability and applicability.

Description

Technical Field

[0001] This application relates to methods and apparatus for paging and random access in wireless communication systems, and more particularly to the Internet of Things (IoT) and noncellular communications. Background Technology

[0002] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. In order to meet the different performance requirements of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to conduct research on New Radio (NR) (or Fifth Generation, 5G). The 3GPP RAN #75 plenary meeting adopted the NR WI (Work Item), and began the standardization work of NR.

[0003] In communications, both LTE (Long Term Evolution) and 5G NR involve reliable and accurate information reception, optimized energy efficiency, determination of information validity, flexible resource allocation, scalable system architecture, efficient non-access stratum information processing, low service interruption and drop rate, and support for low power consumption. These are crucial for normal communication between base stations and user equipment, rational resource scheduling, and balanced system load. They are the cornerstone of high throughput, meeting the communication needs of various services, improving spectrum utilization, and enhancing service quality. They are indispensable for eMBB (enhanced Mobile Broadband), URLLC (Ultra Reliable Low Latency Communication), and eMTC (enhanced Machine Type Communication). Meanwhile, there are extensive needs in IIoT (Industrial Internet of Things), V2X (Vehicle-to-X), Device-to-Device communication, unlicensed spectrum communication, user communication quality monitoring, network planning and optimization, TN (Territory Network), dual connectivity systems, radio resource management and codebook selection for multiple antennas, signaling design, neighbor cell management, service management, and beamforming. Information is transmitted in two ways: broadcast and unicast. Both methods are essential for 5G systems because they are very helpful in meeting the above needs.

[0004] In its latest discussions, 3GPP has focused on A-IoT (Ambient IoT) devices, which are extremely simple devices. Typical AIoT devices do not actively initiate communication; they don't even have batteries or power amplifiers, relying instead on wireless signals from other devices to harvest energy. Clearly, the communication method of such devices is completely different from traditional cellular communication. AIoT has broad application prospects and will undoubtedly play a crucial role in future communications, including 6G. Summary of the Invention

[0005] Researchers have found that when a paged node receives a paging message, it is generally required to respond by initiating random access. However, for the scenario addressed in this application, how to prevent a paged node that has successfully initiated random access for the paging message identified by the first value from repeatedly initiating random access is a problem that needs to be solved.

[0006] To address the problems mentioned above, this application provides a solution.

[0007] It should be noted that, unless otherwise specified, the embodiments and features in any node of this application can be applied to any other node. Unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. Furthermore, the method proposed in this application can also be used to solve other problems in communication, such as those in NR evolution and 6G systems.

[0008] As an example, the interpretation of the terminology in this application is based on the definitions in the 3GPP specification protocol TS38 series.

[0009] As an example, the interpretation of terms in this application is based on the definitions in the 3GPP specification protocol TS37 series.

[0010] This application discloses a method for use in a first node of wireless communication, comprising: sending at least one paging message, wherein the first paging message is any one of the at least one paging message, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value;

[0011] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0012] As an example, the problems this application aims to solve include: how to instruct a paging message to assist the paged party in determining whether random access needs to be initiated in response to this paging message; and how to avoid making duplicate responses to repeated paging requests for necessary content / services.

[0013] As an example, the advantages of the above method include: power saving, particularly suitable for AIoT (A-IoT) devices, avoiding repeated random access, low complexity, and resource saving.

[0014] Specifically, according to one aspect of this application, the first value is used to determine whether to initiate random access, including: when the second node successfully initiates random access in response to the paging message identified by the first value, the second node abandons initiating random access.

[0015] Specifically, according to one aspect of this application, the first paging message triggering the second node to initiate random access only when the second node fails to successfully initiate random access for the paging message identified by the first value is only true within the first time window;

[0016] The length of the first time window is finite.

[0017] Specifically, according to one aspect of this application, the paging messages identified by the first value are all sent by the first node.

[0018] Specifically, according to one aspect of this application, the successful initiation of random access includes the successful completion of data transmission.

[0019] Specifically, according to one aspect of this application, the first paging message indicates that the first value is used to determine whether random access is initiated.

[0020] Specifically, according to one aspect of this application, the first paging message includes the first numerical value.

[0021] Specifically, according to one aspect of this application, a first signal is sent along with the first paging message, the first signal indicating the first value.

[0022] Specifically, according to one aspect of this application, the first signal is an additional paging message or a segment of a paging message.

[0023] Specifically, according to one aspect of this application, the first node is a user equipment.

[0024] Specifically, according to one aspect of this application, the first node is an in-vehicle terminal.

[0025] Specifically, according to one aspect of this application, the first node is a mobile phone.

[0026] Specifically, according to one aspect of this application, the first node is a network node.

[0027] This application discloses a method for use in a second node in wireless communication, comprising: receiving at least one paging message, wherein the first paging message is any one of the at least one paging message, the first paging message paging the second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value;

[0028] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0029] Specifically, according to one aspect of this application, the first value is used to determine whether to initiate random access, including: when the second node successfully initiates random access in response to the paging message identified by the first value, the second node abandons initiating random access.

[0030] Specifically, according to one aspect of this application, the first paging message triggering the second node to initiate random access only when the second node fails to successfully initiate random access for the paging message identified by the first value is only true within the first time window;

[0031] The length of the first time window is finite.

[0032] Specifically, according to one aspect of this application, the paging messages identified by the first value are all sent by the first node.

[0033] Specifically, according to one aspect of this application, the successful initiation of random access includes the successful completion of data transmission.

[0034] Specifically, according to one aspect of this application, the first paging message indicates that the first value is used to determine whether random access is initiated.

[0035] Specifically, according to one aspect of this application, the first paging message includes the first numerical value.

[0036] Specifically, according to one aspect of this application, a first signal is received along with the first paging message, the first signal indicating the first value.

[0037] Specifically, according to one aspect of this application, the first signal is an additional paging message or a segment of a paging message.

[0038] Specifically, according to one aspect of this application, the second node is a device.

[0039] Specifically, according to one aspect of this application, the second node is a terminal.

[0040] Specifically, according to one aspect of this application, the second node is an AIoT device.

[0041] Specifically, according to one aspect of this application, the second node is a circuit card.

[0042] This application discloses a first node used in wireless communication, comprising:

[0043] A first transmitter sends at least one paging message, which is any one of the at least one paging messages. The first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value.

[0044] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0045] This application discloses a second node used in wireless communication, comprising:

[0046] A first receiver receives at least one paging message, the first paging message being any one of the at least one paging messages, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value;

[0047] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0048] As an example, compared with conventional solutions, this application has the following advantages:

[0049] Traditional communication equipment either stops receiving pages after receiving a page, or it stops receiving pages until communication is complete. Once communication is complete, any pages received are considered new pages.

[0050] Traditional communication devices can proactively initiate random access. For example, if a random access attempt fails, it can proactively initiate another random access attempt, which means that the success rate of paging responses is high enough.

[0051] AIoT communication differs from other communication methods. Depending on the application scenario, a large number of AIoT devices can be deployed around the reading device, which often pages multiple AIoT devices via multicast or broadcast. The application scenario for a single AIoT device is also singular and fixed, such as reporting inventory information. Because AIoT devices do not actively initiate random access, they will not proactively re-initiate random access for devices that failed in the previous attempt (e.g., due to poor signal or collision). Instead, they require a subsequent paging by the network, which is one of the biggest differences from other communication devices. Each paging is often treated as a new, independent communication process. If all paged AIoT devices re-initiate random access during the next paging, it not only wastes power but also increases the possibility of collisions and may lead to incorrect inventory statistics. The method proposed in this application can effectively avoid re-initiating random access for paging that has already been responded to.

[0052] A single communication process in AIoT involves a random access event. However, due to the singular application scenario, such as reporting inventory, the next paging (using multicast) will still be for inventory reporting. Therefore, repeated paging for the same reason and responses for the same reason are not uncommon, but rather typical. The method proposed in this application solves a typical problem, has wide applications, and does not affect normal paging responses.

[0053] Other advantages of this application include: lower complexity, greater flexibility, avoidance of false alarms, power saving, resource saving, avoidance of conflicts, and better support for multicast and broadcast-based paging, i.e., paging a group or paging all objects. Attached Figure Description

[0054] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0055] Figure 1 A schematic diagram illustrating the transmission of at least one paging message according to an embodiment of this application is shown;

[0056] Figure 2 A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0057] Figure 3 A schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0058] Figure 4 A schematic diagram of a first communication device and a second communication device according to an embodiment of this application is shown;

[0059] Figure 5 A flowchart of wireless signal transmission according to an embodiment of this application is shown;

[0060] Figure 6 A schematic diagram of at least one paging message according to an embodiment of this application is shown;

[0061] Figure 7 A schematic diagram of at least one paging message according to an embodiment of this application is shown;

[0062] Figure 8 A schematic diagram of a first time window according to an embodiment of this application is shown;

[0063] Figure 9 A schematic diagram of a first paging message according to an embodiment of this application is shown;

[0064] Figure 10 A schematic diagram of a first air interface according to an embodiment of this application is shown;

[0065] Figure 11 A schematic diagram of a processing apparatus for a first node according to an embodiment of this application is illustrated;

[0066] Figure 12 A schematic diagram of a processing apparatus for a second node according to an embodiment of this application is illustrated;

[0067] Figure 13 A schematic diagram illustrating the structure of an A-IoT device according to an embodiment of this application is provided. Detailed Implementation

[0068] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0069] Example 1

[0070] Example 1 illustrates a flowchart of sending at least one paging message according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown. (Attached) Figure 1 In the diagram, each box represents a step. It is particularly important to emphasize that the order of the boxes does not represent the chronological order of the steps they represent.

[0071] In Embodiment 1, the first node in this application sends at least one paging message in step 101;

[0072] The first paging message is any one of the at least one paging message, the first paging message paging the second node, wherein the first value identifies the first paging message, and whether random access is triggered depends on the first value;

[0073] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0074] As an example, the first node is UE (User Equipment).

[0075] As an example, the first node is a terminal.

[0076] As an example, the first node is in RRC connected state.

[0077] As an example, any parameter in this application may be configured by the network or may be generated by the first node according to an internal algorithm, such as randomization.

[0078] As an example, the values ​​of the timers in this application are all limited, not exceeding 2560 milliseconds.

[0079] As an example, the value of the timer is the running time when the timer is not interfered with.

[0080] As an example, the values ​​of any parameters in this application, including but not limited to the values ​​of timers and counters, are limited unless otherwise stated.

[0081] As a sub-implementation of this embodiment, the upper limit of the value of any parameter in this application is 1024 times 65536.

[0082] As a sub-implementation of this embodiment, the upper limit of the value of any parameter in this application is 65536 or 65535.

[0083] As a sub-implementation of this embodiment, the upper limit of the value of any parameter in this application is 1024.

[0084] As a sub-implementation of this embodiment, the upper limit of the value of any parameter in this application is 640 or 320.

[0085] As an example, this application is directed to NR.

[0086] As an example, this application is directed to NR-evolved wireless communication networks.

[0087] As an example, L1 is Layer-1 or physical layer.

[0088] As an example, L2 is Layer-2.

[0089] As an example, this application pertains to NR and NR evolution networks, such as 6G networks.

[0090] As an example, any of the at least one paging message is directed to an AIoT device.

[0091] As an example, any one of the at least one paging message is directed to the second node.

[0092] As an example, there are no other paging messages related to the second node sent by the first node between any two adjacent paging messages in the at least one paging message.

[0093] As one embodiment, the at least one paging message is all paging messages sent by the first node within a time period.

[0094] As a sub-example of this embodiment, all paging messages are paging messages related to the second node.

[0095] As a sub-example of this embodiment, all paging messages are paging messages related to the second node.

[0096] As an example, the at least one paging message is sent via an air interface other than the Uu interface.

[0097] As an example, the at least one paging message is sent via an air interface other than the PC5 interface.

[0098] As one example, the at least one paging message is sent via the air interface between the UE and AIoT.

[0099] As an example, the at least one paging message is the first paging message.

[0100] As one embodiment, the at least one paging message is a plurality of paging messages; the first value identifies the plurality of paging messages.

[0101] As an example, the at least one paging message is a plurality of paging messages; the first value identifies a portion of the plurality of paging messages.

[0102] As an example, when the second node has successfully initiated random access for the paging message identified by the first value, the second node abandons initiating random access for the first paging message.

[0103] As a sub-implementation of this embodiment, the at least one paging message includes multiple paging messages.

[0104] As an example, the second node determines whether to initiate random access based on the first value.

[0105] As an example, the second node will not actively initiate random access.

[0106] As an example, the second node will not actively initiate a random access attempt if the random access attempt fails.

[0107] As an example, the second node receives the at least one paging message.

[0108] In one embodiment, the second node is not a network device.

[0109] As one example, the second node is a device.

[0110] As an example, the device is an IoT device.

[0111] As an example, the IoT device is an AIoT device.

[0112] As an example, the device is one that cannot actively initiate random access.

[0113] As an example, the device is a device without a power amplifier.

[0114] As an example, the first paging message indicates the first value.

[0115] As one embodiment, the first paging message includes the first numerical value.

[0116] As one embodiment, the first paging message includes the identifier of the second node.

[0117] As one embodiment, the first paging message includes the identifier of the group to which the second node belongs.

[0118] As one embodiment, the first paging message paging the second node includes: the first paging message paging the group to which the second node belongs.

[0119] As an example, the first paging message does not include any device identifier.

[0120] As a sub-example of this embodiment, the first paging message does not include any device identification indication, and the first paging message paging all devices.

[0121] As one embodiment, the first paging message does not include the paged person's identifier.

[0122] As a sub-implementation of this embodiment, the first paging message does not include any device identification indication, and the first paging message paging all pagers.

[0123] As an example, the at least one paging message is sent via multicast.

[0124] As an example, the at least one paging message is sent via broadcast.

[0125] As an example, the at least one paging message pagees a group, and the second node is one of the groups.

[0126] As one embodiment, the at least one paging message paging all devices, and the second node is one of the all devices.

[0127] As one embodiment, the first paging message paging the second node includes: the first paging message includes the identifier of the second node.

[0128] As a sub-implementation of this embodiment, the first paging message includes the identifier of a node other than the second node.

[0129] As a sub-example of this embodiment, the nodes other than the second node are AIoT devices.

[0130] As one embodiment, the first paging message paging the second node includes: the first paging message includes the identifier of the group to which the second node belongs.

[0131] As one embodiment, the first paging message paging the second node includes: the first paging message does not include the identifier of any device.

[0132] As a sub-example of this embodiment, the first paging message does not include any device identifier for paging all devices.

[0133] As an example, the first paging message is a paging message.

[0134] As one embodiment, nodes other than the second node that are paged by the first paging message determine whether to initiate random access for the first paging message based on whether they have successfully initiated random access for the paging message identified by the first value.

[0135] As an example, the second node always initiates random access for the first paging message with the first numerical identifier.

[0136] As an example, the first value is one bit.

[0137] As an example, the advantage of including one bit in the first value is to reduce signaling overhead.

[0138] As one example, the first value includes multiple bits.

[0139] As an example, the advantage of including multiple bits in the first value is that it more accurately identifies paging messages and avoids duplication.

[0140] As an example, the first value can be reused.

[0141] As an example, the first value includes 2 bits.

[0142] As an example, the first value includes 3 bits.

[0143] As an example, the first value includes 4 bits.

[0144] As an example, the first value includes more than 4 bits.

[0145] As an example, the at least one paging message is sent periodically.

[0146] As an example, the at least one paging message is not required to be sent periodically.

[0147] As one embodiment, the first numerical value identifying the first paging message includes: the first numerical value being an identifier or index of the first paging message.

[0148] As one embodiment, the first numerical value identifying the first paging message includes: the first numerical value and the first paging message have a corresponding relationship or mapping relationship.

[0149] As one embodiment, the first value is used to determine whether to initiate random access, including: when the second node successfully initiates random access in response to the paging message identified by the first value, the second node abandons initiating random access.

[0150] As one embodiment, the second node abandoning the random access initiative includes: not responding to the first paging message.

[0151] As an example, the first paging message triggering the second node to initiate random access only occurs within the first time window if the second node fails to successfully initiate random access for the paging message identified by the first value.

[0152] As a sub-implementation of this embodiment, the length of the first time window is finite.

[0153] As an example, the length of the first time window is fixed.

[0154] As an example, the length of the first time window is configurable.

[0155] As one embodiment, the first paging message indicates the first time window.

[0156] As one embodiment, the first paging message indicating the first time window includes: the length of the first time window is as indicated by the first paging message.

[0157] As one embodiment, the first paging message indicating the first time window includes: the first paging message indicating whether to use the first time window.

[0158] As an example, the paging messages identified by the first value are all sent by the first node.

[0159] As an example, the first paging message triggers the second node to initiate random access only when the second node fails to successfully initiate random access for the paging message identified by the first value, and the paging message is only valid for paging messages sent to the same node.

[0160] As an example, the first paging message triggers the second node to initiate random access only when the second node fails to successfully initiate random access for the paging message identified by the first value, for paging messages sent by multiple nodes.

[0161] As an example, the first paging message triggers the second node to initiate random access only when the second node fails to successfully initiate random access for the paging message identified by the first value, for any paging message sent by any node.

[0162] As a sub-example of this embodiment, the paging message is a paging message for the device.

[0163] As a sub-implementation of this embodiment, the paging message is a paging message on the first air interface.

[0164] As one embodiment, the first air interface is the air interface between the UE and the AIoT device.

[0165] As an example, the first node determines the first value itself.

[0166] As an example, the first node determining the first value by itself includes: the first node determining the value of the identifier of any paging message by itself.

[0167] As an example, the first node determines the first value according to the instructions of the network.

[0168] As a sub-example of this embodiment, the network includes a base station.

[0169] As a sub-implementation of this embodiment, the network includes a core network.

[0170] As one embodiment, the first node determining the first value according to the network's instruction includes: the network instructing the first value.

[0171] As an example, the first node determines the first value according to the network's instructions, including: the network instructing the identifier of the paging message.

[0172] As an example, successfully initiating random access includes successfully completing the transmission of data.

[0173] As an example, the successful completion of data transmission includes receiving a first confirmation message.

[0174] As a sub-implementation of this embodiment, the first confirmation message confirms that the data transmission is complete.

[0175] As a sub-implementation of this embodiment, the first confirmation message instructs the second node to stop sending and / or receiving.

[0176] As a sub-example of this embodiment, the first confirmation message instructs the second node to enter a sleep state.

[0177] As a sub-example of this embodiment, the first confirmation message indicates that the second node has left the transmission state.

[0178] As a sub-example of this embodiment, the first confirmation message indicates that the second node has left the access state.

[0179] As an example, the second node does not support sending data through procedures other than random access.

[0180] As an example, the first paging message indicates that the first value is used to determine whether random access is initiated.

[0181] As an example, the first paging message indicating whether random access is triggered depends on whether the first value is effective.

[0182] As an example, the advantage of the above method is that it has high flexibility.

[0183] As an example, when the first paging message indicates whether random access is triggered depends on the first value: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0184] As an example, when the first paging message indicates that whether random access is triggered depends on the first value not being effective: the second node initiates random access in response to the first paging message.

[0185] As an example, initiating random access in response to the first paging message means that the first paging message triggers the initiation of random access.

[0186] As an example, initiating random access in response to the first paging message means: initiating random access based on the first paging message.

[0187] As one embodiment, the first paging message includes the first numerical value.

[0188] As an example, the advantage of including the first value in the first paging message is that it has low complexity and does not require an additional receiving process.

[0189] As one embodiment, the first paging message is an additional paging message or a segment of a paging message.

[0190] Example 2

[0191] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in the attached diagram. Figure 2 As shown.

[0192] Appendix Figure 2This diagram illustrates the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. 5GS / EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, 5GS / EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination to UE 201. gNB 203 can connect to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP (Transmitter Receiver Node), or some other suitable term. gNB 203 provides UE 201 with an access point to 5GC / EPC 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term.gNB203 connects to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMF 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. MME / AMF / SMF 211 is the control node handling signaling between UE201 and 5GC / EPC210. ​​Generally, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF 212, which is itself connected to P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 connects to Internet service 230. Internet service 230 includes carrier-compliant Internet protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0193] As an example, the first node in this application is UE201.

[0194] As an example, the base station of the second node in this application is gNB203.

[0195] As an example, the radio link from UE201 to NR node B is an uplink.

[0196] As an example, the radio link from NR node B to UE201 is a downlink.

[0197] As an example, the UE201 includes a mobile phone.

[0198] As an example, the UE201 is a dedicated device or special device with communication functions.

[0199] As an example, the gNB203 is a microcell base station.

[0200] As an example, the gNB203 is a pico cell base station.

[0201] As an example, the gNB203 is a base station used in a home network.

[0202] As an example, the gNB203 is a base station used in a private network.

[0203] As an example, the gNB203 is a base station used in an enterprise network.

[0204] Example 3

[0205] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first node (UE, gNB) and the second node (gNB, UE), or between the two UEs, is illustrated using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. L1 layer will be referred to as PHY301 in this document. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first and second nodes, and between the two UEs, via PHY301. L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets and supports cross-regional movement between second nodes to the first node. RLC sublayer 303 provides upper layer data packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between first nodes. MAC sublayer 302 is also responsible for HARQ operations. RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second and first nodes. PC5-S (PC5 Signaling Protocol) sublayer 307 is responsible for processing the signaling protocol of the PC5 interface. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first and second nodes in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes the SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and Data Radio Bearers (DRBs) to support service diversity. SRBs can be seen as services or interfaces provided by the PDCP sublayer to higher layers, such as the RRC sublayer. In the NR system, SRBs include SRB1, SRB2, and SRB3, which are used to transmit different types of control signaling. SRBs are bearers between the UE and the access network, used to transmit control signaling, including RRC signaling, between the UE and the access network. SRB1 is particularly important for the UE; after each UE establishes an RRC connection, there will be an SRB1 used to transmit RRC signaling. Most signaling is transmitted through SRB1. If SRB1 is interrupted or unavailable, the UE must re-establish RRC. SRB2 is generally only used to transmit NAS signaling or security-related signaling. UEs may not need to configure SRB3. Except for emergency services, the UE must establish an RRC connection with the network for subsequent communication. Although not illustrated, the first node may have several upper layers above L2 layer 355. This also includes a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., remote UE, server, etc.). Protocol layers can also be referred to as protocol sublayers. (See Appendix.) Figure 3 The diagram shows a general protocol layer structure; the nodes used in this application may be missing some protocol layers.

[0206] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node in this application.

[0207] As an example, Appendix Figure 3 A portion of the wireless protocol architecture is applicable to the second node in this application.

[0208] As an example, the communication between the first node and the second node involves only the physical layer and the MAC sublayer.

[0209] As an example, the second node uses only the physical layer and the MAC sublayer.

[0210] As an example, the at least one paging message in this application is generated in MAC302 or PHY301.

[0211] Example 4

[0212] Example 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of this application, as shown in the attached diagram. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in the access network.

[0213] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, and optionally may also include a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0214] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, and optionally may also include a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0215] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 (Layer-2) layer functionality. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0216] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted by the second communication device 410 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0217] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0218] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer function. The controller / processor 475 implements the L2 layer function. The controller / processor 475 may be associated with a memory 476 storing program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover the upper-layer data packets from the first communication device 450. Upper-layer packets from the controller / processor 475 can be provided to the core network.

[0219] As one embodiment, the second communication device may only support attached Figure 4 Some modules / functions in [the system / program].

[0220] As one embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 at least: sends at least one paging message, the first paging message being any one of the at least one paging messages, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; wherein whether random access is triggered depends on the first value includes: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0221] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: sending at least one paging message, the first paging message being any one of the at least one paging messages, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; wherein whether random access is triggered depends on the first value includes: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0222] As one embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the second communication device 410 at least: receives at least one paging message, a first paging message being any one of the at least one paging messages, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; wherein whether random access is triggered depends on the first value includes: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0223] As one embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving at least one paging message, a first paging message being any one of the at least one paging messages, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; wherein whether random access is triggered depends on the first value includes: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0224] As an example, the first communication device 450 corresponds to the first node in this application.

[0225] As an example, the second communication device 410 corresponds to the second node in this application.

[0226] As an example, the first communication device 450 is a UE.

[0227] As an example, the first communication device 450 is a mobile phone.

[0228] As one embodiment, the second communication device 450 is an AIoT device.

[0229] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive first data.

[0230] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive random access preamble.

[0231] As one embodiment, receiver 454 (including antenna 452), receiver processor 456 and controller / processor 459 are used in this application to receive random access requests.

[0232] As one embodiment, a transmitter 454 (including an antenna 452), a transmitter processor 468, and a controller / processor 459 are used to transmit the at least one paging message in this application.

[0233] As one embodiment, a transmitter 454 (including an antenna 452), a transmitter processor 468, and a controller / processor 459 are used to transmit the first signaling in this application.

[0234] As one embodiment, transmitter 454 (including antenna 452), transmitter processor 468 and controller / processor 459 are used in this application to send a first confirmation message.

[0235] Example 5

[0236] Example 5 illustrates a wireless signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. (Attached) Figure 5 In this example, U01 corresponds to the first node of this application. It should be noted that the order in this example does not limit the signal transmission order and the implementation order in this application, and the steps in F51 are optional.

[0237] for First node U01 In step S5101, a first paging message is sent; in step S5102, a random access request is received; in step S5103, first data is received; in step S5104, a first confirmation message is sent; and in step S5105, a second paging message is sent.

[0238] for Second node U02 In step S5201, a first paging message is received; in step S5202, a random access request is sent; in step S5203, first data is sent; in step S5204, a first confirmation message is received; and in step S5205, a second paging message is received.

[0239] In embodiment 5, the first paging message is any one of at least one paging message sent by the first node U01, and the first paging message paging the second node, wherein the first value identifies the first paging message, and whether random access is triggered depends on the first value;

[0240] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0241] As an example, the first node U01 is a UE.

[0242] As an example, the second node U02 is an AIoT device.

[0243] As an example, the communication link between the first node U01 and the second node U02 is not a secondary link.

[0244] As an example, the communication interface between the first node U01 and the second node U02 is not the Uu interface.

[0245] As an example, the second node U02 is not a mobile phone.

[0246] As an example, the second node U02 is not a UE.

[0247] As an example, Appendix Figure 5 The numbering order of the steps shown is the chronological order.

[0248] As an example, step S5102 is earlier than step S5101.

[0249] As a sub-implementation of this embodiment, the second node U02 initiates random access for a paging message identified by the first value that is earlier than the first paging message.

[0250] As an example, step S5102 is later than step S5101.

[0251] As a sub-example of this embodiment, when the second node U02 has not successfully initiated random access for the paging message identified by the first value.

[0252] As an example, step S5103 is later than step S5102.

[0253] As an example, step S5104 is later than step S5103.

[0254] As an example, step S5105 is later than step S5104.

[0255] As an example, step S5105 is earlier than step S5101.

[0256] As a sub-implementation of this embodiment, step S5102 is earlier than step S5101.

[0257] As a sub-implementation of this embodiment, step S5102 is later than step S5105.

[0258] As a sub-implementation of this embodiment, step S5102 is initiated in response to step S5105.

[0259] As an example, the second paging message is one of the at least one paging message.

[0260] As an example, the second paging message is not the first paging message.

[0261] As an example, when step S5201 occurs, if the second node U02 has not successfully initiated random access for the paging message identified by the first value, then the step in F51 occurs.

[0262] As an example, if the second node U02 has successfully initiated random access for the paging message identified by the first value when step S5201 occurs, then the steps in F51 will not occur.

[0263] As one example, initiating random access includes sending signals during the random access process.

[0264] As one embodiment, the signals in the random access process include sending a random access request.

[0265] As one example, the signals in the physical layer of the random access process.

[0266] As one example, the signal preamble during the random access process.

[0267] As one example, initiating random access may also include receiving a response to the random access.

[0268] As an example, the second node U02 can repeatedly transmit signals during the random access process. This can increase the signal power.

[0269] As one embodiment, each signal transmitted by the second node U02 may be accompanied by a signal transmitted by the first node U01. Since the second node U02 has no amplifier or even energy storage, it needs to use the signal from the first node U01 to transmit the signal to be transmitted.

[0270] As one embodiment, the initiation of random access procedure includes sending data and / or receiving a response.

[0271] As one example, sending data and / or receiving responses are accompanied by a random access procedure.

[0272] As a sub-implementation of this embodiment, successfully initiating random access means successfully completing the transmission of data.

[0273] As a sub-example of this embodiment, successfully initiating random access means successfully completing the reception of a response.

[0274] As one embodiment, the data transmission includes transmitting the first data.

[0275] As one embodiment, the receiving response includes receiving the first confirmation message.

[0276] As one embodiment, the first data includes physical layer signals. The first data is generated at the physical layer.

[0277] As one example, the first data includes signals from the MAC layer. The first data is generated at the MAC layer.

[0278] As an example, within F51, the second node U02 can send multiple data, such as the first data, the second data, the third data, and so on.

[0279] As an example, the first confirmation message is used to confirm all the data sent by the second node U02.

[0280] As an example, the first confirmation message instructs the second node U02 to end communication.

[0281] As an example, the first confirmation message instructs the second node U02 to start sleeping.

[0282] As an example, the first confirmation message confirms whether the random access was successfully completed.

[0283] As an example, the first data may, optionally, be encrypted.

[0284] As an example, the first data may, optionally, be protected for integrity.

[0285] As an example, the second node U02 can establish a security context when initiating random access.

[0286] As an example, the first data depends on the security context.

[0287] As one example, the first paging message is directed to multiple devices.

[0288] As one embodiment, the second paging message is directed to multiple devices.

[0289] As an example, the identifiers corresponding to the first paging message and the second paging message are both first values.

[0290] As an example, the first value identifies the second paging message.

[0291] As one embodiment, the second paging message is a copy of the first paging message.

[0292] As one embodiment, the second paging message includes at least one bit that is different from the first paging message.

[0293] As a sub-implementation of this embodiment, the at least one bit included in the second paging message that differs from the first paging message indicates whether the second paging message is the last of the at least one paging message.

[0294] As a sub-implementation of this embodiment, the at least one bit included in the second paging message that is different from the first paging message indicates whether the second paging message is the first of the at least one paging messages.

[0295] As a sub-implementation of this embodiment, the at least one bit included in the second paging message that is different from the first paging message indicates whether the second paging message is the nth of the at least one paging message.

[0296] As a sub-implementation of this embodiment, the at least one bit included in the second paging message that is different from the first paging message indicates whether the second paging message is a main paging message or an additional paging message.

[0297] As one example, the first paging message and the second paging message target the same paging object.

[0298] As one embodiment, the objects paged by the second paging message are a subset of the objects paged by the first paging message.

[0299] As a sub-implementation of this embodiment, the subset is a proper subset.

[0300] As an example, the advantage of having at least one bit different between the first paging message and the second paging message is that it is more flexible.

[0301] As an example, the first node U01, along with step S5103, can send commands or data to the second node U02.

[0302] As an example, regardless of the order of the first paging message and the second paging message, the second node U02 only needs to successfully initiate one random access.

[0303] As the first sub-implementation of this embodiment, the advantages of the above method include saving power and reducing collisions.

[0304] As an example, the first paging message is not directed to other UEs.

[0305] As an example, the at least one paging message is not directed to other UEs.

[0306] As an example, before sending the at least one paging message, the first node U01 may send a wake-up signal or a signal for charging the second node U02.

[0307] Example 6

[0308] Example 6 illustrates a schematic diagram of at least one paging message according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown.

[0309] Appendix Figure 6 Each gray square in the diagram represents a paging message. Although these gray squares are the same size, the method proposed in this application does not require that each paging message in the at least one paging message be the same.

[0310] As one embodiment, the at least one paging message includes an appendix. Figure 6 At least one paging message in the system.

[0311] As an example, any two of the at least one paging messages do not overlap in the time domain.

[0312] As an example, the at least one paging message is sent periodically.

[0313] As an example, the at least one paging message is not required to be sent periodically.

[0314] As an example, the at least one paging message may include only the first paging message.

[0315] Typically, the at least one paging message includes multiple paging messages.

[0316] As an example, each of the at least one paging message is identified by a first numerical value.

[0317] As an example, the first value corresponds to the attached Figure 6 One of a1, a2, a3, a4, a5 in the formula.

[0318] As an example, Appendix Figure 6 a1, a2, a3, a4, and a5 are all different.

[0319] As a sub-example of this embodiment, the at least one paging message includes only the first paging message.

[0320] As an example, Appendix Figure 6 In this context, a1 equals a2, and the at least one paging message includes the paging message corresponding to a1 and the paging message corresponding to a2.

[0321] As a sub-example of this embodiment, a1 is not equal to a3; a1 is not equal to a4; a1 is not equal to a5.

[0322] As an example, Appendix Figure 6 In the equation, a1 = a2 = a3 = a4 = a5.

[0323] As a sub-implementation of this embodiment, the at least one paging message includes an appendix. Figure 6 All paging messages.

[0324] As an example, the at least one paging message is sequential in time.

[0325] As an example, the second node can receive all of the at least one paging message.

[0326] As an example, the second node may receive a portion of the at least one paging message.

[0327] As a sub-implementation of this embodiment, for example, when the channel quality is poor, the second node only receives a portion of the at least one paging message.

[0328] Example 7

[0329] Example 7 illustrates a schematic diagram of at least one paging message according to an embodiment of this application, as shown in the attached diagram. Figure 7 As shown.

[0330] Appendix Figure 7 Each gray square in the diagram represents a paging message. Although these gray squares are the same size, the method proposed in this application does not require that each paging message in the at least one paging message be the same.

[0331] As an example, Appendix Figure 7 In this case, a1 is not equal to a2.

[0332] As one embodiment, the at least one paging message includes an appendix. Figure 7 The two paging messages corresponding to a2 in the middle.

[0333] As a sub-implementation of this embodiment, the first value is equal to a2.

[0334] As one embodiment, the at least one paging message includes an appendix. Figure 7 The three paging messages corresponding to a1 in the table.

[0335] As a sub-implementation of this embodiment, the first value is equal to a1.

[0336] As an example, the first value includes only one bit.

[0337] As an example, the first value is either equal to 0 or equal to 1.

[0338] As an example, all paging messages within the time period occupied by the at least one paging message belong to the at least one paging message.

[0339] As one example, the information that can be used to distinguish paging messages is the identifier of the paging message.

[0340] As an example, any one of the at least one paging messages includes the first value.

[0341] As an example, a signal preceding the at least one paging message indicates the first value.

[0342] As an example, the signal preceding any one of the at least one paging message indicates the first value.

[0343] Example 8

[0344] Example 8 illustrates a schematic diagram of a first time window according to an embodiment of this application, as shown in the attached diagram. Figure 8 As shown.

[0345] As an example, Appendix Figure 8 The first time window includes three paging messages, which are the at least one paging message. This application does not limit the number of paging messages in the first time window.

[0346] As an example, the paging message within the first time window belongs to the at least one paging message.

[0347] As an example, the at least one paging message belongs to the first time window.

[0348] As an example, the first value is equal to a1.

[0349] As an example, Appendix Figure 8 The paging message corresponding to a1 in the first time window belongs to the at least one paging message.

[0350] As an example, the first numerical identifier is attached Figure 8 Five paging messages in the middle.

[0351] As an example, the first value can identify a paging message other than the at least one paging message.

[0352] As an example, the first time window and the first value are used together to determine or identify the at least one paging message.

[0353] As an example, the first time window, the first value, and the identifier of the first node are used together to determine or identify the at least one paging message.

[0354] As a sub-implementation of this embodiment, the first time window, the first value, and the identifier of the first node are used together to determine or identify the at least one paging message, meaning that the first time window, the first value, and the identifier of the first node are used together to identify the at least one paging message to determine or identify the paging message issued by the first node.

[0355] As an example, the random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value, and is only valid for paging messages within the first time window.

[0356] As an example, in the statement that random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value, the paging message identified by the first value refers to the paging message in the at least one paging message.

[0357] As an example, even if the second node successfully initiates random access for paging messages outside the first time window, it does not affect the second node's ability to initiate random access for paging messages within the first time window.

[0358] As a sub-implementation of this embodiment, "not affected" means that the second node still responds to paging messages within the first time window, including initiating random access.

[0359] As an example, the first time window is indicated by the first paging message.

[0360] As an example, the first time window is fixed.

[0361] As one example, the first time window depends on the paging type.

[0362] As an example, the first time window depends on the services supported by the second node.

[0363] As an example, the first time window is indicated by the at least one paging message.

[0364] As an example, the first time window is indicated by a signal preceding the at least one paging message.

[0365] As an example, the signal preceding the at least one paging message is used to wake up the second node.

[0366] As an example, the signal preceding the at least one paging message is used to provide power to the second node.

[0367] As an example, the first time window is finite.

[0368] As one example, the length of the first time window depends on the number of paging messages received.

[0369] As an example, the length of the first time window is the number of square waves or impulses received.

[0370] As an example, the first time window can be implemented using a timer.

[0371] As an example, each time a first type of signal is received, the second node starts or restarts a time period, which belongs to the first time window.

[0372] As an example, the first time window includes only one time period.

[0373] As an example, the first time window consists of at least one of the aforementioned time periods.

[0374] As an example, the first type of signal is a physical layer signal.

[0375] As an example, the first node sends the first type of signal.

[0376] As an example, the first type of signal is used to wake up the device or the AIoT device.

[0377] As one example, the first type of signal is used to provide energy to the second node.

[0378] As an example, the first type of signal includes at least one of a preamble and a middle guide.

[0379] As one example, the first time window corresponds to one wake-up of the second node. Each time the second node wakes up, there is only one time window.

[0380] As an example, the end time of the first time window is the time when the second node begins to sleep.

[0381] As an example, the end time of the first time window is the time when the second node confirms that it has successfully initiated random access.

[0382] Example 9

[0383] Example 9 illustrates a schematic diagram of a first paging message according to an embodiment of this application, as shown in the attached diagram. Figure 9 As shown.

[0384] As an example, Appendix Figure 9 Different colored squares in the text represent different paging messages, different paging message segments, or different paging sub-messages.

[0385] As an example, Appendix Figure 9 The different colored squares in the diagram represent a Type I signal and a paging message.

[0386] As one embodiment, the first paging message may include multiple segments.

[0387] As one embodiment, the first paging message may include a main paging sub-message and an additional paging sub-message.

[0388] As an example, Appendix Figure 9 One of the squares represents the first paging message.

[0389] As an example, Appendix Figure 9 The two signals shown can be continuous or discontinuous in time.

[0390] As one embodiment, the first paging message is an additional paging message.

[0391] As one embodiment, the first value is indicated by an additional paging message.

[0392] As an example, Appendix Figure 9 The earlier signals were used to page or wake up the first group of devices, with attachments Figure 9 The later-sent signal is used to page or wake up the second group of devices.

[0393] As a sub-implementation of this embodiment, Appendix Figure 9 The at least one paging message is displayed.

[0394] As a sub-implementation of this embodiment, the at least one paging message includes two paging messages, each corresponding to an attached paging message. Figure 9 Two squares.

[0395] As one embodiment, the second group of devices is a subset of the first group of devices.

[0396] As a sub-implementation of this embodiment, the subset is a proper subset.

[0397] As an example, the first group of devices includes all devices that received the earlier transmitted signal.

[0398] As an example, the advantages of the above method are reduced complexity, improved paging success rate, improved coverage, and improved scalability.

[0399] Example 10

[0400] Example 10 illustrates a schematic diagram of a first air interface according to an embodiment of this application, as shown in the attached diagram. Figure 10 As shown.

[0401] Appendix Figure 10 This application illustrates a communication scenario in which network nodes include base stations and / or core networks, the first node is a UE, the second node is a device, and the third node is also a device. The method proposed in this application supports more devices.

[0402] As one embodiment, the second node and the third receiver are the same type of device.

[0403] As one embodiment, the second node and the third receiver are devices running the same service.

[0404] As an example, the first node pagees the second node and the third node through the at least one paging message.

[0405] As an example, the first node pages the second node and the third node through the first paging message.

[0406] As one embodiment, the communication interface between the second node and the first node is a first air interface.

[0407] As one embodiment, the communication interface between the third node and the first node is a first air interface.

[0408] As an example, the first air interface is not a Uu interface.

[0409] As an example, the first air interface is not a secondary link interface.

[0410] As an example, the second node is a passive node.

[0411] As an example, the communication interface between the first node and the network node is a Uu interface.

[0412] As an example, the first node is not an IAB (integrated access backhaul) device.

[0413] As an example, the at least one paging message is sent through the first air interface.

[0414] As an example, the first data is sent through the first air interface.

[0415] As an example, the first confirmation message is sent through the first air interface.

[0416] As an example, the initiation of random access is a random access for the first node.

[0417] As an example, the initiation of random access is not a random access to the network.

[0418] As an example, the at least one paging message may be triggered by a network node.

[0419] As an example, the protocol structure on the first air interface does not include the PDCP sublayer.

[0420] As an example, the protocol structure on the first air interface does not include the RRC sublayer.

[0421] As an example, the protocol structure on the first air interface does not include the RLC sublayer.

[0422] As an example, the protocol structure on the first air interface does not include the SDAP sublayer.

[0423] As one example, the first air interface is the interface between the reader and the AIoT device.

[0424] As an example, the first node is a reader.

[0425] Example 11

[0426] Example 11 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of this application; as shown in the appendix. Figure 11 As shown. In the appendix Figure 11 In the first node, the processing device 1100 includes a first receiver 1101, a first transmitter 1102, and a first processor 1103.

[0427] In embodiment 11, the first transmitter 1102 sends at least one paging message, which is any one of the at least one paging messages. The first paging message paging the second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value.

[0428] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0429] As one embodiment, the first value is used to determine whether to initiate random access, including: when the second node successfully initiates random access in response to the paging message identified by the first value, the second node abandons initiating random access.

[0430] As an example, the first paging message triggering the second node to initiate random access only occurs within the first time window if the second node fails to successfully initiate random access for the paging message identified by the first value.

[0431] The length of the first time window is finite.

[0432] As an example, the paging messages identified by the first value are all sent by the first node.

[0433] As an example, successfully initiating random access includes successfully completing the transmission of data.

[0434] As an example, the first paging message indicates that the first value is used to determine whether random access is initiated.

[0435] As one embodiment, the first paging message includes the first numerical value.

[0436] As an example, the first transmitter 1102, along with the first paging message, sends a first signal, the first signal indicating the first value.

[0437] As an example, the first signal belongs to the first type of signal.

[0438] As one embodiment, the first signal is an additional paging message, or a segment of a paging message.

[0439] As an example, the first node is a user equipment (UE).

[0440] As an example, the first node is a terminal that supports large latency differences.

[0441] As an example, the first node is an NTN-enabled terminal.

[0442] As an example, the first node is an aircraft.

[0443] As an example, the first node is a vehicle-mounted terminal.

[0444] As an example, the first node is a mobile phone.

[0445] As an example, the first node is a ship.

[0446] As an example, the first node is an Internet of Things (IoT) terminal.

[0447] As an example, the first node is an industrial Internet of Things (IIoT) terminal.

[0448] As one embodiment, the first receiver 1101 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, or data source 467.

[0449] As one embodiment, the first transmitter 1102 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, or data source 467.

[0450] Example 12

[0451] Example 12 illustrates a structural block diagram of a processing apparatus for a second node according to an embodiment of this application; as shown in the appendix. Figure 12 As shown. In the appendix Figure 12 In the second node, the processing device 1200 includes a second receiver 1201, a second transmitter 1202, and a second processor 1203.

[0452] In embodiment 12, the second receiver 1202 receives at least one paging message, the first paging message being any one of the at least one paging messages, the first paging message paging the second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value;

[0453] The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

[0454] As one embodiment, the first value is used to determine whether to initiate random access, including: when the second node successfully initiates random access in response to the paging message identified by the first value, the second node abandons initiating random access.

[0455] As an example, the first paging message triggering the second node to initiate random access only occurs within the first time window if the second node fails to successfully initiate random access for the paging message identified by the first value.

[0456] The length of the first time window is finite.

[0457] As an example, the paging messages identified by the first value are all sent by the first node.

[0458] As an example, successfully initiating random access includes successfully completing the transmission of data.

[0459] As an example, the first paging message indicates that the first value is used to determine whether random access is initiated.

[0460] As one embodiment, the first paging message includes the first numerical value.

[0461] As an example, along with the first paging message, a first signal is received, the first signal indicating the first value.

[0462] As an example, the first type of signal includes the first signal.

[0463] As one embodiment, the first signal is an additional paging message, or a segment of a paging message.

[0464] As an example, the first node is a device.

[0465] As an example, the first node is an IoT device.

[0466] As an example, the first node is an A-IoT device.

[0467] As one embodiment, the first receiver 1201 includes at least one of the following in embodiment 4: antenna 452, receiver 454, receiver processor 456, multi-antenna receiver processor 458, controller / processor 459, memory 460, or data source 467.

[0468] As one embodiment, the first transmitter 1202 includes at least one of the following in embodiment 4: antenna 452, transmitter 454, transmission processor 468, multi-antenna transmission processor 457, controller / processor 459, memory 460, or data source 467.

[0469] Example 13

[0470] Example 13 illustrates a schematic diagram of the structure of an A-IoT device according to an embodiment of this application, as shown in the attached diagram. Figure 13 As shown.

[0471] Appendix Figure 13In this embodiment, the A-IoT device 1400 includes an antenna 1401, an energy-related module 1404, and a processing-related module 1408. The A-IoT device 1400 may also include a matching network 1402 for matching the impedance between the antenna 1401 and other components, including a radio frequency (RF) energy harvester 1403 and a receiver-related module 1409. The A-IoT device 1400 may also include an energy harvester, which can be either an RF energy harvester 1403 or a non-RF energy harvester 1407. The RF energy harvester 1403 may include a rectifier that performs RF signal (AC) to DC conversion. The RF energy harvester 1403 and the receiver / transmitter may share the antenna 1401, or they may use independent antennas. The energy-related module 1404 may include a power management unit (PMU) 1405; the PMU 1405 is responsible for storing energy from the energy harvester in energy storage 1406 and supplying power to active component blocks that require power. The energy-related module 1404 may also include energy storage 1406; the energy storage 1406 stores energy collected from the energy harvester, and the energy storage 1406 may be a capacitor. The processing module 1408 may include BB (Baseband) logic 1413, memory 1418, and clock generator 1419; the BB logic 1413 may include a decoder 1414, a controller 1415, and an encoder 1416; the memory 1418 may include two types: one is non-volatile memory (NVM), such as EEPROM, for permanent storage of the device ID; the other is a register for temporarily storing information needed for operation only when energy in energy storage 1406 is available; the clock generator 1419 provides the required clock signal. The processing module 1408 may also include reception-related blocks 1409 and transmission-related blocks 1417. For different A-IoT devices, reception-related blocks 1409 and transmission-related blocks 1417 may include different modules.

[0472] As an example, for an A-IoT device 1400 with a peak power consumption of approximately 1 μW, the receive correlation module 1409 may include an RF BPF 1410, an RF envelope detector (RF-ED), a BB LPF 1411, and a comparator 1412. The transmit correlation module 1417 may include a backscatter modulator.

[0473] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially by the RF BPF 1410, the RF envelope detector, the BB LPF 1411, and the comparator 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by the backscatter modulator and then transmitted by the antenna 1401.

[0474] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an external carrier wave is used, the receive-related module 1409 may include an RF BPF 1410, an LNA (Low-noise amplifier), an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a large frequency shifter (e.g., tens of megahertz), a backscatter modulator, and a reflection amplifier. At least one of R2D (Reader to Device) / CW2D (Carrier-wave, or carrier-wave node, to Device) and D2R (Device to Reader) can be amplified by the reflection amplifier or the LNA. The large frequency shifter shifts the backscattered signal from one frequency (e.g., an FDD-DL frequency) to another frequency (e.g., an FDD-UL frequency).

[0475] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is then processed by a large frequency shifter, a backscatter modulator, and a reflection amplifier before being transmitted by the antenna 1401.

[0476] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an RF envelope detector receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator (Tx modulator), a digital-to-analog converter (DAC), a low-pass filter, a mixer, a local oscillator (LO) / FLL ( / PLL), and a power amplifier (PA).

[0477] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is then processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0478] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an IF envelope detector receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector (IF-ED), a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The IF amplifier amplifies the IF signal. The IF filter filters out unwanted RF and LO signals. The IF envelope detector detects the envelope from the IF signal. The mixer in the receive-related module 1409 down-converts the RF signal to the IF stage. Depending on the implementation, there can be one or two mixers for both the transmitter and receiver.

[0479] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0480] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrierwave is used and a zero-IF (ZIF) receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, a mixer, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The mixer in the receive-related module 1409 down-converts the RF signal to the BB stage. Depending on the implementation, there may be one or two mixers for both the transmitter and receiver.

[0481] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, a mixer, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0482] In the above embodiments, the RF BPF 1410 is used to enhance selectivity; depending on the implementation, the RF BPF 1410 may not be present. The BB LPF 1411 is used to filter out harmonics and high-frequency components, improving the input signal quality of the comparator / ADC 1412; depending on the implementation, the BB LPF 1411 may not be present. The comparator 1412 is used to detect the high / low of the input signal. The backscatter modulator is used to convert the impedance into a modulated backscatter signal carrying the transmit signal from the BB logic 1413. The LNA is used to improve signal strength and receiver sensitivity. The RF envelope detector is used to detect the envelope from the RF 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 may be part of the BB logic 1413. The digital-to-analog converter is used to convert the digital signal to an analog signal. The low-pass filter is used to filter out unwanted signals. The mixer in the transmit correlation module 1417 is used to upconvert the baseband signal to the RF range. The LO (Local Optical Array) is used to generate the carrier frequency; the FLL ( / PLL) can be used for frequency synthesis, and depending on the implementation, the FLL ( / PLL) may not be present. The power amplifier is used to amplify the transmitted signal.

[0483] It should be noted that the structure of the A-IoT device in this example does not limit the specific implementation of A-IoT in this application. Specifically, depending on the different functions and actual application scenarios of the A-IoT device, the A-IoT device may adopt the structure of the A-IoT device in this example, or it may include only some modules of the structure of the A-IoT device in this example, and it may also include the aforementioned appendix. Figure 13 Other modules not shown.

[0484] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication equipment, wireless sensors, internet cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablets, satellite communication equipment, ship communication equipment, NTN user equipment, and other wireless communication equipment. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B), TRP (Transmitter Receiver Point), NTN base stations, satellite equipment, flight platform equipment, and other wireless communication equipment.

[0485] This invention may be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A method used in a first node of wireless communication, wherein, include: Send at least one paging message, the first paging message being any one of the at least one paging messages, the first paging message paging the second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

2. The method in the first node according to claim 1, characterized in that, The first value is used to determine whether to initiate random access, including: when the second node successfully initiates random access in response to the paging message identified by the first value, the second node abandons initiating random access.

3. The method in the first node according to claim 1 or 2, characterized in that, The first paging message triggers the second node to initiate random access only when the second node fails to successfully initiate random access for the paging message identified by the first value, and this only occurs within the first time window; The length of the first time window is finite.

4. The method in the first node according to any one of claims 1 to 3, characterized in that, The paging messages identified by the first value are all sent by the first node.

5. The method in the first node according to any one of claims 1 to 4, characterized in that, Successfully initiating random access includes successfully completing the transmission of data.

6. The method in the first node according to any one of claims 1 to 5, characterized in that, The first paging message indicates that the first value is used to determine whether random access is initiated.

7. The method in the first node according to any one of claims 1 to 6, characterized in that, The first paging message includes the first value.

8. A method for use in a second node of wireless communication, wherein, include: Receive at least one paging message, the first paging message being any one of the at least one paging messages, the first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

9. A first node used for wireless communication, wherein, include: A first transmitter sends at least one paging message, which is any one of the at least one paging messages. The first paging message paging a second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value. The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

10. A second node used for wireless communication, wherein, include: The second receiver receives at least one paging message, the first paging message being any one of the at least one paging messages, the first paging message paging the second node, wherein a first value identifies the first paging message, and whether random access is triggered depends on the first value; The determination of whether random access is triggered depends on the first value, including: random access is triggered only when the second node fails to successfully initiate random access for the paging message identified by the first value.

Images