Information transmission method and communication device

Abstract

The invention provides an information transmission method and a communication device. The method comprises: a first device receiving a first signaling from a second device, the first signaling comprising first indication information, the first signaling being used for indicating the first device to access the second device, the first indication information indicates one or more of the following items: the device with successful random access does not respond to the second signaling, and the device without successful random access responds to the second signaling after being paged; the second signaling is used for triggering a random access opportunity; the first device receives a second signaling from a second device. In this way, the device missing the paging signaling can successfully perform random access based on the first signaling.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an information transmission method and a communication device. Background Art

[0002] With the advancement of communications technology, the Third Generation Partnership Project (3GPP) has defined the ambient internet of things (A-IoT) technology. A-IoT is based on cellular network communications infrastructure and consists of readers (such as base stations) and A-IoT terminals (terminals within the cellular network, which can be understood as extremely low-power, low-complexity IoT terminals). A-IoT's main services include inventory, positioning, sensing, and commands; typical application scenarios include logistics, warehousing, industrial manufacturing, identity recognition, and environmental monitoring. A-IoT terminals in different locations receive varying amounts of charging power, resulting in varying charging times. Furthermore, different A-IoT terminals may start operating at different times. Consequently, some A-IoT terminals may not receive messages (such as paging messages) that allow them to connect to the reader, preventing them from performing random access and thus failing to complete service transmission. Summary of the Invention

[0003] The present application provides an information transmission method and a communication device, which are conducive to the successful random access of A-IoT terminals.

[0004] In a first aspect, the present application provides an information transmission method, which includes: a first device receives a first signaling from a second device, the first signaling including first indication information, the first signaling being used to instruct the first device to access the second device, the first indication information indicating one or more of the following: a device that successfully accesses randomly does not respond to the second signaling, a device that fails to successfully access randomly after being paged responds to the second signaling; the second signaling is used to trigger a random access opportunity; the first device receives the second signaling from the second device.

[0005] After the second device sends the third signaling for paging the first device, the second device can send the first signaling for indicating the first device to access the second device again, so that the first device can successfully perform the random access based on the first signaling in the case that the first device does not receive the third signaling. Optionally, in the first aspect to the fourth aspect, the third signaling can be understood as the first signaling for paging the first device which is sent for the first time. Alternatively, the third signaling can be understood as the last paging message. In addition, the first indication information is carried in the first signaling, so that it is beneficial to avoid that the device which successfully performs the random access performs the random access again, which causes the device to repeatedly perform the same service, and further causes the power consumption of the device to increase and the processing efficiency of the service to be low.

[0006] In a possible example, if the first device receives the first signaling in the case that the random access is successful, the first device does not respond to the second signaling. Optionally, if the first device receives the first signaling in the case that the random access is successful, the first device can receive the third signaling for paging the first device before the first device receives the first signaling.

[0007] In the possible example, by causing the first device to not respond to the second signaling in the case that the random access is successful, it is beneficial to avoid that the first device performs the random access again, which further avoids that the first device repeatedly performs the same service, and causes the power consumption of the first device to increase and the processing efficiency of the service to be low.

[0008] In a possible example, if the first device receives the first signaling in the case that the random access is not successful after being paged, the first device responds to the second signaling. Optionally, if the first device receives the first signaling in the case that the random access is not successful after being paged, the first device can receive the third signaling for paging the first device before the first device receives the first signaling.

[0009] In the possible example, by causing the first device to respond to the second signaling in the case that the random access is not successful after being paged, it is beneficial to cause the first device to continue to perform the random access, which prevents the service of the first device from being unable to be completed. For example, in the inventory service, the first device does not complete the random access, and then the first device cannot be inventoried by the reader.

[0010] In a possible example, if the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device responds to the second signaling.

[0011] In the possible example, by causing the first device to respond to the second signaling in the case that the first device does not receive the signaling for paging the first device before receiving the first signaling, it is beneficial to cause the first device to successfully perform the random access, which prevents the service of the first device from being unable to be completed.

[0012] In a possible example, if the first device does not receive signaling for paging the first device before receiving the first signaling, the first device ignores the first indication information.

[0013] In this possible example, if the first device does not receive signaling for paging the first device before receiving the first signaling, the first device can directly respond to the first signaling without interpreting the first indication information in the first signaling, which is conducive to saving power consumption of the first device.

[0014] In one possible example, the first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device. Optionally, the parameters can be used by the first device to subsequently perform one or more of the following operations: receiving downlink signaling sent by the second device, sending uplink signaling to the second device, determining grouping information, or determining a process ID. For example, the parameters may include, but are not limited to, one or more of the following: downlink bandwidth, cyclic redundancy check (CRC) configuration, downlink modulation and coding scheme (MCS), grouping parameters, multi-process parameters, uplink MCS, or frequency information.

[0015] By including the first configuration information in the first signaling, it is beneficial for the first device to communicate normally with the second device subsequently. In the case where the first device receives the third signaling, due to the limited capacitance / energy storage of the first device, the first device may experience a power outage (battery exhausted or battery below a certain threshold) after receiving the third signaling but before completing the service, and the second configuration information temporarily stored in the first device will be lost, which will result in the first device and the second device being unable to communicate normally. Therefore, by including the first configuration information in the first signaling, the first device can subsequently communicate normally with the second device based on the first configuration information after receiving the first signaling. In the case where the first device does not receive the third signaling, by including the first configuration information in the first signaling, the first device can subsequently communicate normally with the second device based on the first configuration information after receiving the first signaling.

[0016] In a possible example, the first indication information instructs the device that has successfully performed random access not to respond to the second signaling and instructs the device that has not successfully performed random access after being paged to respond to the second signaling.

[0017] In the second aspect, the present application provides an information transmission method, which includes: the second device sends a first signaling, the first signaling includes first indication information, the first signaling is used to indicate that the first device accesses the second device, and the first indication information indicates one or more of the following: the device that successfully accesses randomly does not respond to the second signaling, and the device that does not successfully access randomly after being paged responds to the second signaling, and the second signaling is used to trigger a random access opportunity; the second device sends a second signaling.

[0018] In a possible example, the first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

[0019] Optionally, the parameter may be used by the first device to subsequently perform one or more of the following operations: receiving downlink signaling sent by the second device, sending uplink signaling to the second device, determining grouping information, or determining a process ID. For example, the parameter may include, but is not limited to, one or more of the following: downlink bandwidth, CRC configuration, downlink MCS, grouping parameters, multi-process parameters, uplink MCS, or frequency information.

[0020] In a possible example, before sending the first signaling, the second device may further send a third signaling for paging the first device.

[0021] In a possible example, the first indication information instructs the device that has successfully performed random access not to respond to the second signaling and instructs the device that has not successfully performed random access after being paged to respond to the second signaling.

[0022] The beneficial effects of the second aspect can be referred to the beneficial effects of the first aspect, and will not be repeated here.

[0023] In a third aspect, the present application provides an information transmission method, which includes: a first device receives a first signaling from a second device, the first signaling including first indication information, the first signaling being used to instruct the first device to access the second device, the first indication information indicating one or more of the following: the device that successfully accesses randomly maintains the current device state, and the device that fails to access randomly after being paged maintains the current device state; the first device receives a second signaling from the second device, the second signaling being used to trigger a random access opportunity.

[0024] Based on the method described in the third aspect, after the second device sends the third signaling for paging the first device, it may resend the first signaling for instructing the first device to access the second device. In this way, if the first device does not receive the third signaling, it can successfully perform random access based on the first signaling. Furthermore, the first signaling also carries the first indication information, which helps prevent a device that has successfully performed random access from performing random access again, causing the device to repeatedly perform the same service, thereby increasing power consumption of the device and reducing service processing efficiency.

[0025] In one possible example, if the first device receives the first signaling when random access is successful, the first device maintains its current device state as the first state, which is the state the first device was in when random access was successful. In the first state, the first device does not respond to the second signaling. Alternatively, if the first device receives the first signaling when random access is successful, before the first device receives the first signaling, the first device may receive a third signaling for paging the first device.

[0026] In this possible example, when the random access of the first device is successful, the first device can be kept in the first state so that the first device does not respond to the second signaling, thereby avoiding the first device from making random access again, and further avoiding the first device from executing the same service again, resulting in increased power consumption of the first device and low service processing efficiency.

[0027] In one possible example, if the first device receives the first signaling without successfully performing random access after being paged, the first device maintains the current device state in the second state, which is the state in which the first device is in when the random access is not successful after being paged; and the first device responds to the second signaling in the second state. Optionally, if the first device receives the first signaling without successfully performing random access after being paged, before the first device receives the first signaling, the first device may receive a third signaling for paging the first device.

[0028] In this possible example, if the first device fails to perform random access after being paged, the first device can be maintained in the second state. This allows the first device to respond to the second signaling, allowing the first device to continue performing random access, thereby preventing the first device from failing to complete its service. For example, if the first device fails to complete random access during an inventory service, the device cannot be inventoried by the reader / writer.

[0029] In one possible example, if the first device does not receive a signaling for paging the first device before receiving the first signaling, the first device enters a second state, which is the state in which the first device is in when random access is not successful after being paged; the first device responds to the second signaling in the second state.

[0030] In this possible example, when the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device is put into the second state so that the first device can respond to the second signaling, which is conducive to the successful random access of the first device and prevents the service of the first device from being unable to be completed.

[0031] In a possible example, if the first device does not receive signaling for paging the first device before receiving the first signaling, the first device ignores the first indication information.

[0032] In this possible example, if the first device does not receive signaling for paging the first device before receiving the first signaling, the first device can directly respond to the first signaling without interpreting the first indication information in the first signaling, which is conducive to saving power consumption of the first device.

[0033] In one possible example, the first signaling further includes first configuration information, where the first configuration information is used to configure communication parameters between the first device and the second device. Optionally, the parameters can be used by the first device to subsequently perform one or more of the following operations: receiving downlink signaling from the second device, sending uplink signaling to the second device, determining grouping information, or determining a process ID. For example, the parameters may include, but are not limited to, one or more of the following: downlink bandwidth, CRC configuration, downlink MCS, grouping parameters, multi-process parameters, uplink MCS, or frequency information.

[0034] By including the first configuration information in the first signaling, it is beneficial for the first device to communicate normally with the second device subsequently. In the case where the first device receives the third signaling, due to the limited capacitance / energy storage of the first device, the first device may experience a power outage (battery exhausted or battery below a certain threshold) after receiving the third signaling but before completing the service, and the second configuration information temporarily stored in the first device will be lost, which will result in the first device and the second device being unable to communicate normally. Therefore, by including the first configuration information in the first signaling, the first device can subsequently communicate normally with the second device based on the first configuration information after receiving the first signaling. In the case where the first device does not receive the third signaling, by including the first configuration information in the first signaling, the first device can subsequently communicate normally with the second device based on the first configuration information after receiving the first signaling.

[0035] In one possible example, the device state of the first device includes a first state, a second state, and a third state; the first state is the state in which the first device successfully performs random access, the second state is the state in which the first device fails to perform random access after being paged, and the third state is the state in which the first device fails to receive signaling for paging the first device. Based on this possible example, the first device can distinguish between a state in which the first device fails to perform random access after being paged and a state in which the first device fails to receive signaling for paging the first device, thereby preventing the first device from performing random access when it fails to receive signaling for paging the first device.

[0036] In a possible example, the device state of the first device includes a first state and a second state; the first state is a state in which the first device is successful in random access, and the first state is also a state in which the first device does not receive signaling for paging the first device; and the second state is a state in which the first device is paged but is not successful in random access. Based on the possible example, the first device can be enabled to distinguish between the state in which the first device is paged but is not successful in random access and the state in which the first device does not receive signaling for paging the first device, so as to avoid the first device performing random access when the first device does not receive signaling for paging the first device.

[0037] In a possible example, the first indication information indicates that a device that is successful in random access maintains a current device state and a device that is paged but is not successful in random access maintains the current device state.

[0038] In a fourth aspect, the present application provides an information transmission method, which includes:

[0039] The second device sends first signaling, the first signaling including first indication information, the first signaling being used to instruct the first device to perform random access, and the first indication information indicating one or more of the following: a device that is successful in random access maintaining a current device state and a device that is paged but is not successful in random access maintaining the current device state; and the second device sends second signaling, the second signaling being used to trigger a random access opportunity.

[0040] In a possible example, the first signaling further includes first configuration information, the first configuration information being used to configure a parameter of communication between the first device and the second device.

[0041] Optionally, the parameter can be used by the first device to subsequently perform one or more of the following operations: receiving downlink signaling sent by the second device, sending uplink signaling to the second device, determining packet information, or determining a process number, and the like. For example, the parameter can include, but is not limited to, one or more of the following: a downlink bandwidth, a CRC configuration, a downlink MCS, a packet parameter, a multi-process parameter, an uplink MCS, or frequency information.

[0042] In a possible example, the second device can further send third signaling used to page the first device before sending the first signaling.

[0043] In a possible example, the first indication information indicates that a device that is successful in random access maintains a current device state and a device that is paged but is not successful in random access maintains the current device state.

[0044] The beneficial effects of the fourth aspect can be referred to the beneficial effects of the third aspect, and are not described herein again.

[0045] In a possible example, in the first aspect to the fourth aspect, the first signaling / third signaling can be indicated as the message for paging the device by a logical channel identifier (LCID) in the first signaling / third signaling, or can be indicated as the message for paging the device by identification information (carried in medium access control (MAC) or carried in a message header field (high layer field)).

[0046] In a possible example, in the first aspect to the fourth aspect, the first signaling can also not carry the first indication information, that is, the first signaling and the third signaling can not be distinguished by the first indication information. For example, whether the received signaling is the first signaling or the third signaling can be distinguished by different LCIDs or different identification information. For example, when the LCID / identification information in the received signaling is LCID 1 / identification information 1, it indicates that the signaling is the third signaling. When the LCID / identification information in the received signaling is LCID 2 / identification information 2, it indicates that the signaling is the first signaling.

[0047] In the fifth aspect, the present application provides an information transmission method, which includes: receiving, by a first device, first signaling from a second device, the first signaling including first configuration information, the first configuration information being used to configure parameters of communication between the first device and the second device, and the first signaling being used to page the first device; and receiving, by the first device, second signaling from the second device, the second signaling including the first configuration information, and the second signaling being used to trigger a random access opportunity.

[0048] Based on the method described in the fifth aspect, the second device can repeatedly send the first configuration information used to configure the parameters of communication between the first device and the second device through the second signaling. In this way, the first device can reacquire the first configuration information after being powered on again, and then can normally communicate with the second device based on the first configuration information.

[0049] In a possible example, the device state of the first device includes a first state, a second state, and a third state; the first state is a state of the first device when the first device successfully performs random access, the second state is a state of the first device after being paged and before the first device successfully performs random access, and the third state is a state of the first device when the first device does not receive signaling for paging the first device. Based on the possible example, the first device can distinguish between the state of the first device after being paged and before the first device successfully performs random access, and the state of the first device when the first device does not receive signaling for paging the first device, so as to avoid the first device performing random access when the first device does not receive the signaling for paging the first device.

[0050] In a possible example, the device state of the first device includes a first state and a second state; the first state is a state in which the first device is successfully randomly accessed, and the first state is also a state in which the first device does not receive signaling for paging the first device; and the second state is a state in which the first device is paged but is not successfully randomly accessed. Based on the possible example, the first device can be enabled to distinguish between the state in which the first device is paged but is not successfully randomly accessed, and the state in which the first device does not receive signaling for paging the first device, so as to avoid the first device performing random access when the first device does not receive signaling for paging the first device.

[0051] In a possible example, the parameter can be used by the first device to subsequently perform one or more of the following operations: receiving downlink signaling sent by the second device, sending uplink signaling to the second device, determining packet information, or determining a process number, and the like. For example, the parameter can include, but is not limited to, one or more of the following: a downlink bandwidth, a CRC configuration, a downlink MCS, a packet parameter, a multi-process parameter, an uplink MCS, or frequency information.

[0052] In a sixth aspect, the present application provides an information transmission method, which includes:

[0053] The second device sends first signaling, the first signaling including first configuration information used to configure a parameter of communication between the first device and the second device, and the first signaling being used to page the first device; and the second device sends second signaling, the second signaling including the first configuration information, and the second signaling being used to trigger a random access opportunity.

[0054] In a possible example, the parameter can be used by the first device to subsequently perform one or more of the following operations: receiving downlink signaling sent by the second device, sending uplink signaling to the second device, determining packet information, or determining a process number, and the like. For example, the parameter can include, but is not limited to, one or more of the following: a downlink bandwidth, a CRC configuration, a downlink MCS, a packet parameter, a multi-process parameter, an uplink MCS, or frequency information.

[0055] In a possible example, in the fifth aspect and the sixth aspect, the first signaling can be indicated as a message used to page a device by LCID in the first signaling, or can be indicated as a message used to page a device by identification information (carried in MAC or carried in a message header field (a high-layer field)).

[0056] The beneficial effects of the sixth aspect can be referred to the beneficial effects of the fifth aspect, and are not described herein.

[0057] In a seventh aspect, the present application provides a communication device, which may be, for example, the first device described above or a module applied to the first device, such as a processor, chip, or chip system, or a logical node, logic module, or software capable of implementing all or part of the functions of the first device. The communication device includes a module / unit for executing the method described in any one of the first aspect, the third aspect, or the fifth aspect.

[0058] In an eighth aspect, the present application provides a communication device, which may be, for example, a second device or a module applied to the second device, such as a processor, chip, or chip system, or a logical node, logic module, or software capable of implementing all or part of the functions of the second device. The communication device includes a module / unit for executing the method described in any one of the second aspect, the fourth aspect, or the sixth aspect.

[0059] In the ninth aspect, the present application provides a communication device, including a processor, the processor and a memory are coupled, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device executes the method described in any one of the above-mentioned aspects 1 to 6.

[0060] In the tenth aspect, the present application provides a chip, which includes a processor and an interface, and the processor and the interface are coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions, so that the chip executes the method described in any one of the first to sixth aspects above.

[0061] In the eleventh aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are called, the method described in any one of the above-mentioned first to sixth aspects is executed.

[0062] In a twelfth aspect, the present application provides a computer program product, comprising: a computer program code, wherein when the computer program code is executed, the method described in any one of the above-mentioned aspects 1 to 6 is executed.

[0063] In a thirteenth aspect, the present application provides a communication system, comprising a first apparatus for executing the method described in the first aspect and a second apparatus for executing the method described in the second aspect. Alternatively, the communication system comprises a first apparatus for executing the method described in the third aspect and a second apparatus for executing the method described in the fourth aspect. Alternatively, the communication system comprises a first apparatus for executing the method described in the fifth aspect and a second apparatus for executing the method described in the sixth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1aA topological diagram of an A-IoT-based communication system provided in an embodiment of the present application;

[0065] Figure 1b A topological diagram of an A-IoT-based communication system provided in an embodiment of the present application;

[0066] Figure 1c A topological diagram of an A-IoT-based communication system provided in an embodiment of the present application;

[0067] Figure 1d A topological diagram of an A-IoT-based communication system provided in an embodiment of the present application;

[0068] Figure 1e A topological diagram of an A-IoT-based communication system provided in an embodiment of the present application;

[0069] Figure 2 A schematic diagram of an O-RAN system provided in an embodiment of the present application;

[0070] Figure 3 A schematic diagram of an O-RAN system including an RIC provided in an embodiment of the present application;

[0071] Figure 4 A schematic diagram of the inventory process of the RFID system provided in an embodiment of the present application;

[0072] Figure 5 A flowchart of an information transmission method provided in an embodiment of the present application;

[0073] Figure 6 A flowchart of an information transmission method provided in an embodiment of the present application;

[0074] Figure 7 A flowchart of an information transmission method provided in an embodiment of the present application;

[0075] Figure 8 A schematic diagram of the transition relationship between the first state, the second state, and the third state provided in an embodiment of the present application;

[0076] Figure 9 A schematic diagram of the conversion relationship between the first state and the second state provided in an embodiment of the present application;

[0077] Figure 10 A flowchart of an information transmission method provided in an embodiment of the present application;

[0078] Figure 11 A flowchart of an information transmission method provided in an embodiment of the present application;

[0079] Figure 12A flowchart of an information transmission method provided in an embodiment of the present application;

[0080] Figure 13 A schematic diagram of the transition relationship between the first state, the second state, and the third state provided in an embodiment of the present application;

[0081] Figure 14 A schematic diagram of the conversion relationship between the first state and the second state provided in an embodiment of the present application;

[0082] Figure 15 A flowchart of an information transmission method provided in an embodiment of the present application;

[0083] Figure 16 A flowchart of an information transmission method provided in an embodiment of the present application;

[0084] Figure 17 and Figure 18 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0085] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0086] The terms "first" and "second" and the like in the specification, claims, and drawings of this application are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0087] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0088] In the present application, "at least one" means one or more, "multiple" means two or more, "at least two" means two or three and three or more, and "and / or" is used to describe the relationship between the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean: only A, only B, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c, can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0089] In the present application, "sending information" can be understood as one device sending information to another device, or also can be understood as one logical module in a device sending information to another logical module. For example, "the access network device sending information" can be understood as the access network device sending information to another device (such as a terminal), or can be understood as a logical module 1 in the access network device sending information to a logical module 2 in the access network device.

[0090] In the present application, "receiving information" can be understood as one device receiving information from another device, or also can be understood as one logical module in a device receiving information from another logical module. For example, "the access network device receiving information" can be understood as the access network device receiving information from another device (such as a terminal), or can be understood as a logical module 1 in the access network device receiving information from a logical module 2 in the access network device.

[0091] In the present application, "sending information to (for example, a terminal)" or related illustrations in the drawings can be understood as the destination of the information being the terminal. It can include directly or indirectly sending information to the terminal. "Receiving information from (for example, a terminal)" or "receiving information sent by (for example, a terminal)" or "receiving information sent by (for example, a terminal)", or related illustrations in the drawings can be understood as the source of the information being the terminal, which can include directly or indirectly receiving information from the terminal. The information between the source and the destination of the information sending may be necessary processing, such as format change, etc., but the destination can understand the valid information from the source. Similar expressions in the present application can be similarly understood, and will not be repeated here.

[0092] In order to better understand the embodiments of the present application, first, the system architecture related to the embodiments of the present application will be introduced as follows:

[0093] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS), a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a universal mobile telecommunications system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a 5th generation (5G) system, a new radio (NR), a 6th generation mobile communication (6G) access technology, and an access technology evolved after 6G.

[0094] The following describes the infrastructure of the communication system provided by the embodiments of the present application. The communication system provided by the present application can be a communication system based on A-IoT technology. The A-IoT-based communication system includes a reader / writer and an A-IoT terminal. The reader / writer and the A-IoT terminal can both be devices in a cellular network. For example, the functions of the reader / writer can be implemented by a network device, such as a base station. Alternatively, the functions of the reader / writer can also be implemented by a terminal device. The A-IoT terminal can be implemented by a terminal device in a cellular network, such as an extremely low-power-consumption and extremely low-complexity Internet of Things terminal. The reader / writer and the A-IoT terminal can perform non-contact data communication, thereby reading information from the A-IoT terminal and / or writing information to be stored into the A-IoT terminal. In the embodiments of the present application, the reader / writer can also be referred to as a reader or other names, and the A-IoT terminal can also be referred to as a tag or other names.

[0095] A-IoT terminals can be passive, semi-passive, or active. A passive A-IoT terminal can also be referred to as device A, a semi-passive A-IoT terminal as device B, and an active A-IoT terminal as device C. Passive and semi-passive A-IoT terminals typically communicate via reflected carrier waves, meaning they rely on an external carrier source. Active A-IoT terminals, on the other hand, can actively generate carrier waves (or have carrier recovery capabilities), eliminating the need for external carrier sources and possessing active communication capabilities. A passive A-IoT terminal is a node (or device) that does not have or rely on power sources such as batteries. It can harvest energy from the environment to support data perception, transmission, and distributed computing, and can also store the harvested energy. In other words, a passive A-IoT terminal may or may not have an energy storage capacitor. If it does not have an energy storage capacitor, it must rely on external energy, such as radio frequency energy, for communication. Semi-passive A-IoT terminals usually have energy storage capacitors, which can store energy in the environment, such as solar energy, radio power, etc. in the capacitors. Usually, semi-passive A-IoT terminals can have power amplifiers, so that the communication distance of semi-passive terminals is improved compared to the communication distance of passive terminals. Active A-IoT terminals can also be backward compatible with the communication mechanism of passive A-IoT terminals or semi-passive A-IoT terminals, that is, they can trigger the active A-IoT terminal to initiate a random access process and send identification information through external excitation. In a possible implementation method of an active A-IoT terminal, the active A-IoT terminal can also have an energy storage capacitor, which can obtain energy through solar energy, radio frequency, wind energy, hydropower or tidal energy, and this application does not limit the way it obtains energy. It should be noted that the A-IoT terminal can be in the form of a tag or any other terminal form, and this application does not limit this.

[0096] The following introduces several topologies of A-IoT-based communication systems:

[0097] Topology 1: See Figure 1a , Figure 1a This is a topological diagram of the A-IoT-based communication system provided in the embodiment of the present application. Figure 1a As shown, the A-IoT terminal and the network device communicate directly and bidirectionally. Communication between the network device and the A-IoT terminal includes environmental IoT data and / or signaling. The network device can send downlink data / signaling to the A-IoT terminal, and the A-IoT terminal can send uplink data / signaling to the network device. This means that uplink and downlink data / signaling exist between the network device and the A-IoT terminal. The reader / writer functionality can be implemented by the network device.

[0098] Topology 2: Please refer to Figure 1b , Figure 1b The topology diagram of the communication system based on A-IoT provided by the embodiment of the present application. As shown in Figure 1b , the A-IoT terminal and the intermediate node communicate bidirectionally. The intermediate node can be a repeater, an IAB node, a UE, a repeater, and the like, which can realize the environmental Internet of Things. The intermediate node transmits the data / signaling of A-IoT between the network device and the A-IoT terminal. The function of the reader / writer can be realized by the intermediate node.

[0099] Topology 3: Please refer to Figure 1c , Figure 1c The topology diagram of the communication system based on A-IoT provided by the embodiment of the present application. As shown in Figure 1c , the A-IoT terminal sends data / signaling to the network device and receives data / signaling from the auxiliary node. The auxiliary node can be a repeater, an IAB, a UE, a repeater, and the like, which can realize the Internet of Things. The function of the reader / writer can be realized by the network device / auxiliary node.

[0100] Topology 4: Please refer to Figure 1d , Figure 1d The topology diagram of the communication system based on A-IoT provided by the embodiment of the present application. As shown in Figure 1d , the A-IoT terminal receives data / signaling from the network device and sends data / signaling to the auxiliary node. The auxiliary node can be a repeater, an IAB, a UE, a repeater, and the like, which can realize the Internet of Things. The function of the reader / writer can be realized by the network device / auxiliary node.

[0101] Topology 5: Please refer to Figure 1e , Figure 1e The topology diagram of the communication system based on A-IoT provided by the embodiment of the present application. As shown in Figure 1e , the terminal device and the A-IoT terminal directly communicate bidirectionally. The communication between the terminal device and the A-IoT terminal includes environmental Internet of Things data and / or signaling. The function of the reader / writer can be realized by the terminal device.

[0102] A-IoT technology is a kind of extremely low power consumption and extremely low complexity Internet of Things technology defined by 3GPP plenary, which can be understood as an extension of passive radio frequency identification (RFID) in 3GPP. Although it has some principles in common with RFID, such as similar inventory business processes, more value-added scenarios will be introduced in 3GPP. A-IoT technology can be used to implement one or more of the following businesses: inventory, positioning, sensing, and command. It can be understood that the command business can be to implement a read process or a write process or a lock (process) business. For application scope, A-IoT technology can be applied to logistics, warehousing, industrial manufacturing, identity recognition, or environmental monitoring scenarios.

[0103] Inventory operation (also known as inventory operation) is to check the existing A-IoT terminal, which can also be understood as obtaining the identification information of the A-IoT terminal. Each A-IoT terminal has its identification, which can be allocated by an enterprise (that is, written into the A-IoT terminal when the A-IoT terminal is printed by the enterprise) or by an operator. In one possible implementation, the identification of the A-IoT terminal can be a globally unique code, such as an Electronic Product Code (EPC), or a temporary identification or a non-globally unique identification. In the inventory process, the server (or AF) can issue an inventory operation instruction to the reader. Generally, the inventory operation instruction includes the identification range of the A-IoT terminal, the reader identification, the location information, and the like. After receiving the inventory operation instruction, the reader will inventory the A-IoT terminal according to the inventory instruction and send the identification information of the A-IoT terminal to the server. Alternatively, the server sends an inventory operation instruction to the reader, and the reader forwards the inventory operation instruction to the A-IoT terminal. The A-IoT terminal knows that it is an inventory operation according to the content of the inventory operation instruction, and sends the identification information of the A-IoT terminal to the reader, which sends the identification information of the A-IoT terminal to the server; or the A-IoT terminal sends the identification information of the A-IoT terminal to the core network through the reader, and the core network sends the identification information of the A-IoT terminal to the server.

[0104] Positioning operation, that is, obtaining the location information of the A-IoT terminal. If the server wants to perform a positioning operation on the A-IoT terminal, it will send a positioning instruction, and the reader or the core network will perform a positioning operation on the A-IoT terminal to obtain the location of the A-IoT terminal and send the data to the server.

[0105] A read operation involves reading data from an A-IoT terminal. An A-IoT terminal can have storage capabilities, and its storage area can store data. If a server wishes to perform a read operation on an A-IoT terminal, it sends a read instruction. The reader or core network then performs a read operation on the A-IoT terminal based on the instruction, reading the data from the A-IoT terminal's storage area and sending it to the server. Based on this definition, a read operation can also include a sensor operation, which involves reading sensor data from an A-IoT terminal.

[0106] A write operation is a process of writing data to an A-IoT terminal. The server can send a write instruction, and the reader or core network performs a write operation on the A-IoT terminal according to the instruction, writing data to the storage area of ​​the A-IoT terminal.

[0107] Lock operation: The server can send a lock instruction, and the reader or core network performs a lock operation on the A-IoT terminal according to the instruction, allowing the A-IoT terminal to lock the location of the specified address in the storage area. The content of this storage area cannot be changed or read.

[0108] The following is an introduction to the terminal devices and network devices mentioned above:

[0109] 1.A terminal device is an entity of a user side for receiving a signal, or transmitting a signal, or receiving a signal and transmitting a signal. The terminal device is used to provide one or more of voice service and data connectivity service to a user. The terminal device can be a device including a wireless transceiver function and capable of providing communication services to a user in cooperation with a network device. Specifically, the terminal device can refer to a user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a terminal, a wireless communication device, a user agent, a user apparatus, or a road side unit (RSU). The terminal device can also be a drone, an internet of things (IoT) device, a station (ST) in a wireless local area networks (WLAN), a cellular phone, a smart phone, a cordless phone, a wireless data card, a tablet computer, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a laptop computer, a machine type communication (MTC) terminal, a handheld device having a wireless communication function, a computing device, or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device (which can also be referred to as a smart wearable device), a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in remote medical treatment, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.

[0110] The embodiments of this application do not limit the device form factor of the terminal device. The device used to implement the functions of the terminal device can be the terminal device; it can also be a device that supports the terminal device to implement the functions, such as a chip system. The device can be installed in the terminal device or used in conjunction with the terminal device. In the embodiments of this application, the chip system can be composed of a chip or include a chip and other discrete components.

[0111] 2. A network device is an entity on the network side that is used to send or receive signals, or both. A network device can be a device deployed in a radio access network (RAN) to provide wireless communication functions for terminal devices.

[0112] In one possible scenario, the network device may be a device with base station functionality, such as an evolved NodeB (eNodeB), a transmitting and receiving point (TRP), a transmitting point (TP), a next-generation NodeB (gNB), a next-generation base station in a 6G mobile communication system, an integrated access and backhaul (IAB) node, or a non-terrestrial network device, i.e., a device that can be deployed on a high-altitude platform or satellite. The network device may be a transmission reception point (TRP), a base station, or various forms of control nodes, such as a network controller or a wireless controller. Specifically, network devices can include various forms of macro base stations, micro base stations (also known as small cells) in heterogeneous network (HetNet) scenarios, relay stations, access points (APs), radio network controllers (RNCs), node Bs (NBs), base station controllers (BSCs), base transceiver stations (BTSs), home base stations (e.g., home evolved node Bs or home node Bs, HNBs), baseband units (BBUs) and remote radio units (RRUs) in distributed base station scenarios, transmission points (TRPs), transmitting points (TPs), mobile switching centers, etc. They can also be antenna panels for base stations. A control node can connect to multiple base stations and configure resources for multiple terminals covered by multiple base stations. In systems using different wireless access technologies, the names of devices with base station functions may vary. For example, it can be a gNB in ​​5G, or a network-side device in a network after 5G, or a network device in a future evolved public land mobile network (PLMN) network, or a device that performs base station functions in device-to-device (D2D) communication, machine-to-machine (M2M) communication, or vehicle network communication, etc. This application does not limit the specific name of the network device.The network device may also be an access network device in an open radio access network (O-RAN or ORAN), a baseband pool (BBU pool) and RRU under a cloud radio access network (CRAN), etc.

[0113] In the embodiments of the present application, the form of the network device is not limited. The device used to implement the function of the network device can be a network device; it can also be a device that can support the network device to implement the function, such as a chip system. The device can be installed in the network device or used in conjunction with the network device.

[0114] The following is an introduction to the O-RAN system:

[0115] See Figure 2 , Figure 2 Schematic diagram of the O-RAN system provided in the embodiment of this application. Figure 2 As shown, the access network equipment in the O-RAN system includes a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU and DU can be set separately, or can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). In the ORAN system, the CU can also be called an O-CU (open CU), the DU can also be called an O-DU, the CU-CP can also be called an O-CU-CP, the CU-UP can also be called an O-CU-UP, and the RU can also be called an O-RU. For the convenience of description, this application takes CU, CU-CP, CU-UP, DU and RU as examples for description. Any of the CU (or CU-CP, CU-UP), DU and RU in this application can be implemented through a software module, a hardware module, or a combination of a software module and a hardware module.

[0116] like Figure 2As shown, the access network device communicates with the core network (CN) through a backhaul link and communicates with the terminal device through an air interface. For example, the baseband unit (BBU) in the access network device can communicate with the core network through a backhaul link, and the radio unit (RU) in the access network device can communicate with at least one UE through an air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and RU may or may not be co-located. The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate through at least one midhaul link.

[0117] See Figure 3 , Figure 3 The O-RAN system provided for the embodiment of the present application includes a schematic diagram of a RAN intelligent controller (RIC). RIC includes a near-real time RIC (near-real time RIC, near-RT RIC) and a non-real time RIC (non-real time RIC, Non-RT RIC). The near-real time RIC is used for model training and reasoning. For example, it is used to train an artificial intelligence (AI) model and use the AI ​​model for reasoning. The near-real time RIC can obtain network-side and / or terminal-side information from access network devices (such as CU, CU-CP, CU-UP, DU and / or RU) and / or terminals. This information can be used as training data or reasoning data. Optionally, the near-real time RIC can submit the reasoning results to the access network device and / or terminal. Optionally, the reasoning results can be exchanged between the CU and the DU, and / or between the DU and the RU. For example, the near-real time RIC submits the reasoning results to the DU, and the DU sends it to the RU.

[0118] Non-real-time RIC is used for model training and reasoning. For example, it is used to train an AI model and use the model for reasoning. Non-real-time RIC can obtain network-side and / or terminal-side information from access network equipment (such as CU, CU-CP, CU-UP, DU and / or RU) and / or terminals. This information can be used as training data or reasoning data, and the reasoning result can be delivered to the access network equipment and / or terminal. Optionally, the reasoning results can be exchanged between the CU and the DU, and / or between the DU and the RU. For example, the non-real-time RIC delivers the reasoning result to the DU, and the DU sends it to the RU.

[0119] The near-real-time RIC and non-real-time RIC can also be set up as separate network elements. Optionally, the near-real-time RIC and non-real-time RIC can also be part of other devices. For example, the near-real-time RIC is set up in access network equipment (e.g., CU, DU), while the non-real-time RIC is set up in operation, administration and maintenance (OAM), cloud servers, core network equipment, or other access network equipment.

[0120] In order to better understand the embodiments of the present application, some professional terms are introduced below:

[0121] 1. Passive radio frequency identification (RFID)

[0122] An RFID system consists of a reader and a tag. The reader reads information from the tag or writes information to the tag. Data communication between the reader and the tag is contactless. Tags are simple in function and rely on the reader to transmit information. The tag converts the wireless signal from the reader into energy and uses this energy to power itself. Tags typically consume microwatts or hundreds of microwatts of power, making them incapable of complex designs.

[0123] 2. Inventory process of RFID system

[0124] See Figure 4 , Figure 4 Schematic diagram of the inventory process of the RFID system provided in the embodiment of the present application. Figure 4 As shown, the inventory process of the RFID system is as follows:

[0125] 401. The reader sends a select signaling, which is used to select a group of tags and includes mask information (similar to a group identifier).

[0126] Accordingly, the tag receives the select signaling. If the tag matches the mask information, it sets the tag's flag to A or B (either A or B is configurable; A and B are simply two status indicators used to indicate whether a tag has been inventoried, e.g., a flag variable equal to 0 or 1, 0 for A and 1 for B) according to the select signaling and maintains the flag (assuming it is A), indicating a wait for random access.

[0127] 402. The reader sends a query signaling, which carries a Q value and a flag A or B (assuming it is A).

[0128] Accordingly, the tag receives the query signaling. If the tag's flag is set by the select signaling (assuming it is A), the tag responds to the query signaling and generates a random number between [0 and 2^Q-1] based on the Q value, which is recorded as the initial value of the counter. For example, if Q = 4, the tag generates a random number between [0 and 15] as the initial counter value.

[0129] 403. The reader repeatedly sends 2^Q queryrep signaling messages.

[0130] Each queryrep signaling interval can be considered a time slot. Each time the tag receives a queryrep signaling, the tag's counter value decreases by one. If the counter decreases to 0, the tag initiates random access. For example, assume the tag's initial counter = 10. When the tag receives 10 queryrep signalings, the tag's counter = 0, triggering step 404.

[0131] 404. If the tag counter is reduced to 0, the tag sends a random number RN16 (16-bit random number) for contention resolution.

[0132] 405. If the reader receives RN16 from only one tag, the reader sends an acknowledgment (ACK) (including the RN16 received by the reader) to indicate that the contention is successfully resolved.

[0133] 406. If the tag receives an ACK, and the ACK carries the RN16 sent in 404, it indicates that the contention is successfully resolved, and the tag sends an electronic product code (EPC).

[0134] 407. When the reader receives the EPC and decodes it successfully, it feeds back a queryrep signaling and ends the current time slot.

[0135] After the tag sends EPC, it receives queryrep signaling and flips the flag bit (assuming the flag bit is A before the inventory is successful, it will be flipped to B after the success) (select is set to A) or B to A (select is set to B).

[0136] 3. Paging: Message used for paging a device. For example, also referred to as initial trigger (message), trigger message, downlink (DL) trigger (message), paging-like message, select signaling.

[0137] 4. Query: Message used to trigger / indicate at least one access opportunity, such as directly or indirectly indicating the total number of access opportunities, and also used to trigger the first access opportunity. For example, also referred to as access round indication / trigger (message).

[0138] 5. Query Rep: Message used to trigger / indicate the next access opportunity, and also understood as indicating / associated with a boundary (start or end) of an access opportunity. For example, also referred to as (next) access occasion indication / trigger (message).

[0139] 6. RN (16): For example, also referred to as random access ID (identifier).

[0140] 7. ACK (acknowledgement message to access request): For example, also referred to as access ID response.

[0141] 8. EPC: For example, also referred to as device ID.

[0142] In order to solve the problem that the A-IoT terminal may miss receiving messages (such as paging messages) for the A-IoT terminal to access the reader / writer due to certain reasons, and thus the A-IoT terminal cannot perform random access, an embodiment of the present application provides an information transmission method and a communication device. The information transmission method and the communication device are further introduced below in conjunction with the accompanying drawings. It can be understood that the present application uses the first device and the second device as examples to illustrate the execution subjects of the interaction diagram, but the present application does not limit the execution subjects of the interaction diagram. For example, the method executed by the first device or the second device in the present application can also be executed by a module (such as a chip, a chip system, or a processor) applied to the first device or the second device, and can also be implemented by a logical node, a logical module or software that can realize all or part of the functions of the first device or the second device. Among them, the first device can be an A-IoT terminal, and the second device can be a reader / writer. For the introduction of the A-IoT terminal and the reader / writer, please refer to the description in the previous text and will not be repeated here.

[0143] See Figure 5 , Figure 5 A schematic diagram of a flow chart of an information transmission method provided in an embodiment of the present application, wherein:

[0144] 501. A second device sends first signaling, where the first signaling includes first indication information. The first signaling is used to instruct the first device to access the second device. The first indication information indicates one or more of the following: a device that successfully accesses the second signaling does not respond to the second signaling, or a device that fails to successfully access the second signaling after being paged responds to the second signaling; the second signaling is used to trigger a random access opportunity. Accordingly, the first device may receive the first signaling.

[0145] In an embodiment of the present application, the second device may broadcast the first signaling. That is, in addition to the first device receiving the first signaling, other devices may also receive the first signaling. Optionally, in addition to instructing the first device to access the second device, the first signaling may also instruct one or more other devices to access the second device.

[0146] Optionally, when the second device is a base station / access network device, the first signaling may be used to instruct the first device to access the network. When the second device is a terminal device, the first signaling may be used to instruct the first device to access the terminal device. Optionally, the first device may access the network through the terminal device.

[0147] Optionally, the first signaling can also be used to trigger / instruct the first device to send uplink data, or to trigger / instruct / request the first device to perform a first service, wherein the first service may include at least one of the following: paging service, inventory service, command service (such as reading, writing, deactivating, locking, etc.), positioning service, and sensing service.

[0148] Optionally, the first signaling may be a signaling for paging the first device, such as a paging signaling. Alternatively, the first signaling may also be other signaling that instructs the first device to access the second device, which is not limited in the embodiments of the present application. In the embodiments of the present application, "paging" may also be replaced or understood as "selection" or "trigger" or "indication". For ease of description, the embodiments of the present application are described using "paging" as an example. For ease of description, the following text also describes the first signaling as a signaling for paging the first device as an example. As mentioned above, the paging signaling may also be replaced or understood as an initial trigger (message), a trigger message, a downlink (DL) trigger (message), a paging-like message, or a select signaling.

[0149] Optionally, the signaling used to paging the first device refers to signaling in which the group identifier / mask information / identification information included in the signaling matches the identification information of the first device (such as device identifier (device ID) or EPC or temporary identifier, etc.). When the signaling used to paging the first device includes mask information, matching means that the part indicated by the mask in the identification information of the first device is the same as the mask information. For example, if the mask is 1000, indicating that the first 4 bits in the identification information of the first device are the same as the mask information, the matching condition can be met, that is, when the first four bits of the identification information of the first device are 1000, the identification information of the first device matches the mask information. For example, if the identification information is 10001111, the identification information of the first device matches the mask information.

[0150] In an embodiment of the present application, the first indication information may only indicate that the device that successfully accesses randomly does not respond to the second signaling; or, the first indication information may only indicate that the device that did not successfully access randomly after being paged responds to the second signaling; or, the first indication information indicates that the device that successfully accesses randomly does not respond to the second signaling and indicates that the device that did not successfully access randomly after being paged responds to the second signaling.

[0151] Successful random access means that the device received the signaling for paging the device and successfully performed random access. Failed random access after being paged means that the device received the signaling for paging the device and did not successfully perform random access. Failed random access here includes two situations: the first is that random access has not yet begun, and the second is that random access has failed.

[0152] Optionally, the random access can also be replaced or understood as: access, data transmission, contention resolution or identification. The random access success can also be replaced or understood as: access success, data transmission success, contention resolution success, identification success, service completion. The random access failure can be replaced or understood as: access failure, data transmission failure, contention resolution failure, identification failure, service failure. The random access failure after being paged can be replaced or understood as: access failure after being paged, data transmission failure after being paged, contention resolution failure after being paged, identification failure after being paged, service failure after being paged, waiting for random access, waiting for data transmission or waiting for contention resolution. For example, when the random access is replaced or understood as data transmission success, the random access failure can be replaced or understood as data transmission failure. When the random access is replaced or understood as contention resolution success, the random access failure can be replaced or understood as contention resolution failure. The "success" can also be understood as "completion" or "successful completion", and the following is the same.

[0153] Optionally, the second signaling can include various signaling, such as query, access round indication / trigger, queryrep or accessoccasion indication / trigger, and the embodiments of the present application are not limited to the signaling name of the second signaling. Or the second signaling can also be other signaling for triggering a random access opportunity, which is not limited by the embodiments of the present application. Optionally, the second signaling for triggering a random access opportunity can also be replaced or understood as the second signaling for triggering a data transmission opportunity. For example, in the scenario of contention resolution free, the A-IoT terminal can directly send data to the reader. The random access opportunity can also be referred to as: access opportunity, random access occasion, random access resource, random access time slot, transmission occasion, transmission / communication resource, transmission time slot or scheduling resource, etc. The resource can include resources in different dimensions of time, frequency and code domain. Each access opportunity can allow the first device to send access (request), and / or contention resolution, and / or data transmission, etc.

[0154] Optionally, before sending the first signaling, the second device can also send a third signaling for paging the first device. The first indication information is not included in the third signaling. The third signaling can be understood as the first signaling for paging the first device. Or the third signaling can also be understood as the last paging message (last paging). The first device can receive the third signaling or can not receive the third signaling. After the second device sends the third signaling, the first signaling is sent, which can be understood as the retransmitted signaling for paging the first device. In this way, the device in the system that does not receive the third signaling in time can access the second device based on the first signaling after receiving the first signaling to complete the subsequent service.

[0155] In one possible example, the first signaling can be initiated by the second device (e.g., a base station or an intermediate node, etc.) proactively. Optionally, the first signaling can be an access stratum (e.g., radio resource control (RRC), MAC, etc.) message. For example, the second device can periodically send the first signaling. Alternatively, the second device can predict the power-off time of the paged device, determine when to send the first signaling based on the power-off time. Optionally, in an O-RAN system, the RIC can provide the predicted power-off time of the paged device to the CU, so that the CU determines when to send the first signaling based on the power-off time. Optionally, the second device can determine whether to continue sending the first signaling based on whether there are still devices that have not performed random access. Optionally, in an O-RAN system, the RIC can provide the number of UEs that have not performed random access to the CU, so that the CU determines whether there are still devices that have not performed random access based on the number of UEs that have not performed random access, and further determines whether to continue sending the first signaling.

[0156] In another possible example, the first signaling can also be triggered by a core network element (e.g., an access and mobility management function (AMF), an ambient internet of network function (AIoTF), or an ambient internet of network management function (AIoTMF), etc.) to send the second device. For example, the core network element can send a message to the second device to trigger the second device to send the first signaling. After receiving the message, the second device sends the first signaling.

[0157] In one possible example, the third signaling can also be initiated by the second device proactively. For example, the mode of periodic paging or A-IoT paging itself can support RAN paging.

[0158] In one possible example, the third signaling can be triggered by a core network element to send the second device. For example, the core network element sends a service (request) message or a paging (request) message to the second device. For example, the service can be an inventory service, or a command service, or a positioning service, or a sensing service, etc. After receiving the service (request) message or the paging (request) message, the second device sends the third signaling.

[0159] Optionally, the first indication information indicates one or more of the following: the device that succeeds in the random access does not respond to the second signaling, the device that succeeds in the random access and is paged does not respond to the second signaling. Alternatively, the first indication information indicates that the first signaling is retransmission of the signaling for paging the first device, or the first indication information indicates that the first signaling is signaling for paging the first device again, or the first indication information indicates that the device to which the first signaling is effective is a device that is not paged before the first signaling is received. The device that is not paged is a device that does not receive the signaling for paging the device.

[0160] Optionally, the first indication information can be indicated by a first field in the first signaling, and the first indication information indicates one or more of the following: the device that succeeds in the random access does not respond to the second signaling, the device that succeeds in the random access and is paged does not respond to the second signaling. The first field can have one or more bits. For example, the first field has one bit. When the bit value of the first field is 1, it indicates one or more of the following: the device that succeeds in the random access does not respond to the second signaling, the device that succeeds in the random access and is paged does not respond to the second signaling. When the bit value of the first field is 0 or there is no first field, it indicates that there is no first indication information or the first indication information is ignored. Alternatively, when the bit value of the first field is 0, it indicates one or more of the following: the device that succeeds in the random access does not respond to the second signaling, the device that succeeds in the random access and is paged does not respond to the second signaling. When the bit value of the first field is 1 or there is no first field, it indicates that there is no first indication information or the first indication information is ignored.

[0161] 502. The second device sends the second signaling. Accordingly, the first device can receive the second signaling.

[0162] In the embodiments of the present application, after the second device sends the first signaling, the second device can send the second signaling.

[0163] In the embodiments of the present application, after the first device receives the first signaling, the following situations 1-3 can occur:

[0164] Situation 1. If the first device receives the first signaling in the case of successful random access, the first device does not respond to the second signaling.

[0165] That is, the first device has received the signaling for paging the first device before receiving the first signaling, such as the third signaling. After the first device receives the signaling, the first device waits for the completion of the random access in response to the signaling, and successfully performs the random access in the subsequent process in response to the signaling for triggering the random access opportunity. Since the first device has successfully performed the random access, in this case, the first device does not respond to the second signaling after receiving the first signaling, so as to avoid the first device performing the random access again, leading to the first device performing the same service again, and further leading to the increase of the power consumption of the first device and the low processing efficiency of the service.

[0166] Optionally, if the first device receives the first signaling in the case of successful random access, the first device does not respond to the second signaling, which can be alternatively or understood as: if the first device receives the first signaling in the case of successful random access, the first device responds to the first indication information. Since the function of the first indication information indicates that the device with successful random access does not respond to the second signaling, the first device does not respond to the second signaling in the case of successful random access, which can be understood as that the first device responds to the first indication information.

[0167] Optionally, if the first device receives the first signaling in the case of successful random access, the first device does not respond to the second signaling, which can be alternatively or understood as: if the first device receives the first signaling in the case of successful random access, the first device does not respond to the first signaling. Since the first signaling can be understood as the retransmitted signaling for paging the device, the first signaling itself is used to be sent to the device that has not received the signaling for paging it. Since the first device has received the signaling for paging the first device, the first device does not need to respond to the first signaling to avoid performing the random access again. Specifically, if the first device receives the first signaling in the case of successful random access, the first device will determine whether the first signaling is the retransmitted signaling for paging the first device or not the first transmitted signaling for paging the first device according to the first indication information after receiving the first signaling. After the first device determines whether the first signaling is the retransmitted signaling for paging the first device or not the first transmitted signaling for paging the first device, the first device does not respond to the first signaling.

[0168] Optionally, the first device not responding to the second signaling can also be understood as not initiating (entering) the random access, not sending the uplink message (such as the random access message, the uplink data, etc.), and not responding to the downlink message related to the random access (such as the signaling for triggering the random access procedure). Optionally, the physical layer can receive or decode the second signaling, but the high layer (the protocol layer entity above the physical layer) entity does not respond to the second signaling or does not trigger the procedure related to the second signaling.

[0169] Case 2: If the first device receives the first signaling in the case that the first device has not successfully accessed the network after being paged, the first device responds to the second signaling.

[0170] That is, the first device has received the signaling for paging the first device, such as the third signaling, before receiving the first signaling. And the first device has not successfully accessed the network after being paged, and the first device has not successfully accessed the network after being paged. Here, the first device has not successfully accessed the network after being paged includes two cases, the first case is that the first device has not started random access, and the second case is that the first device has failed in random access. Since the first device has not successfully accessed the network after being paged, in this case, after the first device receives the first signaling, the first device responds to the second signaling, that is, the first device performs the random access related procedure based on the second signaling.

[0171] Optionally, if the first device receives the first signaling in the case that the first device has not successfully accessed the network after being paged, the first device responds to the second signaling, which can also be replaced or understood as: if the first device receives the first signaling in the case that the first device has not successfully accessed the network after being paged, the first device responds to the first indication information. Since the function of the first indication information indicates that the device that has not successfully accessed the network after being paged responds to the second signaling, the first device responding to the second signaling in the case that the first device has not successfully accessed the network after being paged can also be understood as the first device responding to the first indication information.

[0172] Optionally, if the first device receives the first signaling in the case that the first device has not successfully accessed the network after being paged, the first device responds to the second signaling, which can also be replaced or understood as: if the first device receives the first signaling in the case that the first device has not successfully accessed the network after being paged, the first device does not respond to the first signaling. Because the first signaling can be understood as a retransmitted signaling for paging the device, the first signaling itself is used to send to the device that has not received the signaling for paging it. Since the first device has received the signaling for paging the first device, the first device can continue to perform the subsequent procedure triggered by the signaling, that is, respond to the second signaling. Therefore, the first device does not need to respond to the first signaling. Specifically, if the first device receives the first signaling in the case that the first device has not successfully accessed the network after being paged, the first device will determine whether the first signaling is a retransmitted signaling for paging the first device or not a first transmitted signaling for paging the first device after receiving the first signaling according to the first indication information. After the first device determines that the first signaling is a retransmitted signaling for paging the first device or not a first transmitted signaling for paging the first device, the first device does not respond to the first signaling.

[0173] In case 1 and case 2, not responding to the first signaling can also mean not performing the related procedure triggered by the first signaling. For example, the first signaling is a paging message, not responding to the paging can mean not responding to / processing the parameter configuration carried in the paging, or not performing the random access, data transmission procedure triggered after the paging is successful. In case 1 and case 2, “not responding” can also be replaced by or understood as “ignoring” or “discarding”.

[0174] It can be seen that when the first device receives the first signaling without successfully performing random access after being paged, the first device responds to the second signaling, which is beneficial for the first device to successfully perform random access and prevent the service of the first device from being unable to be completed. For example, in the inventory service, the first device does not complete the random access, and then the device cannot be inventoried by the reader.

[0175] Case 3. If the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device responds to the second signaling.

[0176] The first device does not successfully receive the signaling for paging the first device and does not perform random access due to some reasons (for example, the first device is insufficient in power, the power is lower than a certain threshold, the receiver is not in an operating state, etc.). Therefore, after the first device receives the first signaling, the first device can respond to the second signaling, that is, the first device performs the random access related procedure based on the second signaling to successfully perform random access and complete the subsequent service procedure.

[0177] Optionally, if the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device responds to the second signaling, which can also be replaced by or understood as: if the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device responds to the first signaling. The first device responds to the first signaling means that the first device waits to receive the second signaling and responds to the second signaling after receiving the second signaling. Because the first signaling can be understood as a retransmitted signaling for paging the device, the first signaling itself is used to send to the device that does not receive the signaling for paging it. Therefore, when the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device can respond to the first signaling.

[0178] Optionally, responding to the first signaling can also mean performing the related procedure triggered by the first signaling. For example, the first signaling is a paging message, responding to the paging can mean responding to / processing the parameter configuration carried in the paging, or performing the random access, data transmission procedure triggered after the paging is successful.

[0179] It can be seen that when the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device responds to the second signaling, which is conducive to the first device successfully performing random access and preventing the first device's service from being unable to complete.

[0180] In one possible example, if the first device has not received signaling for paging the first device before receiving the first signaling, the first device ignores the first indication information. In other words, if the first device has not received signaling for paging the first device before receiving the first signaling, the first device can directly respond to the first signaling without interpreting the first indication information in the first signaling, which helps save power consumption of the first device.

[0181] In one possible example, the first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device. These parameters can be used by the first device to subsequently perform one or more of the following operations: receiving downlink signaling from the second device, sending uplink signaling to the second device, determining grouping information, or determining a process ID. For example, these parameters may include, but are not limited to, one or more of the following: downlink bandwidth, CRC configuration, downlink MCS, grouping parameters, multi-process parameters, uplink MCS, time unit, encoded code length, or frequency information.

[0182] For example, the downlink bandwidth may be the number of downlink subcarriers or the bandwidth size.

[0183] For example, CRC Configuration is used to configure CRC.

[0184] For example, the downlink MCS may include one or more of the following parameters for downlink transmission: bit repetition number, preamble configuration, midamble configuration, chip repetition number, or chip length. For example, the bit repetition number may be the number of repeated transmissions of downlink data or data blocks. For example, the preamble configuration may include a preamble sequence type and / or a preamble length. For example, the midamble configuration may include a midamble sequence type and / or a midamble length.

[0185] For example, the grouping parameter may include the total number of groups of devices to be paged, and the first device may be determined based on the total number of groups.

[0186] For example, the multi-process parameter may include the total number of processes corresponding to the paged device, etc.

[0187] For example, the uplink MCS may include one or more of the following parameters for uplink transmission: bit repetition number, preamble configuration, level repetition number, level length, code rate, encoding mode, etc.

[0188] For example, the time unit can be a time unit of uplink transmission or downlink transmission.

[0189] For example, the code length of the encoding can be a code length of uplink transmission or downlink transmission, for example, the code length of the encoding includes a number of Manchester repetitions.

[0190] For example, the frequency information can be frequency information of uplink transmission or downlink transmission.

[0191] In the embodiments of the present application, the uplink can be replaced or understood as device-to-reader (DR), and the downlink can be replaced or understood as reader-to-device (RD).

[0192] Optionally, the third signaling includes second configuration information, and the second configuration information is used to configure a parameter of communication between the first device and the second device. The first configuration information can be the same as or different from the second configuration information.

[0193] By including the first configuration information in the first signaling, the first device can subsequently perform normal communication with the second device. For the case that the first device receives the third signaling, because the capacitance / energy storage of the first device is limited, the first device can be powered off (the power is consumed or is lower than a certain threshold) before completing the service after receiving the third signaling, and the second configuration information temporarily stored in the first device is lost, so that the first device and the second device cannot perform normal communication. Therefore, by including the first configuration information in the first signaling, the first device can subsequently perform normal communication with the second device based on the first configuration information after receiving the first signaling. For the case that the first device does not receive the third signaling, by including the first configuration information in the first signaling, the first device can subsequently perform normal communication with the second device based on the first configuration information after receiving the first signaling.

[0194] Optionally, the first configuration information can also not be carried in the first signaling, and the first configuration information can be sent through other signaling, for example, query signaling or queryrep signaling, and the embodiments of the present application are not limited.

[0195] Optionally, the third signaling can further include second indication information. The second indication information is used to indicate that all devices paged by the third signaling respond to the third signaling. Alternatively, the second indication information is used to indicate that all devices paged by the third signaling respond to signaling used to trigger random access. Alternatively, the second indication information is used to indicate that the third signaling acts on all devices paged by the third signaling. Alternatively, the second indication information is used to indicate that the third signaling is initial transmission signaling used to page the first device. Of course, the third signaling can also not carry the second indication information, and the embodiments of the present application are not limited in this regard.

[0196] In order to better understand the embodiments of the present application, the following specific examples are used to further illustrate the described method: Figure 5

[0197] For example, Figure 6 Taking the third signaling as paging signaling 1, the first signaling as paging signaling 2, and the second signaling as queryrep signaling as an example.

[0198] Among them:

[0199] 601. The core network device sends a service request to the reader, and the service request carries mask information 1, which is used to indicate that UE1, UE2 and UE3 are selected to perform service 1.

[0200] Correspondingly, the reader receives the service request.

[0201] 602. The reader sends paging signaling 1 based on the service request, and the paging signaling 1 includes mask information 1, configuration information 1 and indication information 1. The indication information 1 is used to indicate that the paging signaling 1 is initial transmission signaling used to page UE1, UE2 and UE3.

[0202] UE1 and UE2 receive the paging signaling 1. UE3 does not receive the paging signaling 1 because it has not started working.

[0203] 603. After the reader sends the paging signaling 1, the query signaling is sent.

[0204] 604. After the reader sends the query signaling, the queryrep signaling is sent.

[0205] 605. UE1 performs random access (RA).

[0206] ​After UE1 receives the query signaling and the queryrep signaling, the UE1 successfully performs random access based on the query signaling and the queryrep signaling. UE2 has not successfully performed random access based on the query signaling and the queryrep signaling.

[0207] 606、The reader sends paging signaling 2, which includes mask information 1, configuration information 1, and indication information 2 indicating that a device that has successfully performed random access does not respond to the queryrep signaling and that a device that has not successfully performed random access after being paged responds to the queryrep signaling.

[0208] At this time, UE3 has started to work, so UE1-UE3 all receive the paging signaling 2.

[0209] 607、The reader sends queryrep signaling.

[0210] After UE1 receives the paging signaling 2, because UE1 has successfully performed random access, UE1 does not respond to the queryrep signaling sent after the paging signaling 2. After UE2 receives the paging signaling 2, because UE2 has not successfully performed random access, UE2 responds to the queryrep signaling sent after the paging signaling 2 to perform random access. After UE3 receives the paging signaling 2, because UE3 has not received the paging signaling 1, i.e., UE3 has not been paged before receiving the paging signaling 2, UE3 responds to the queryrep signaling sent after the paging signaling 2 to perform random access.

[0211] Optionally, the first device can record (or maintain / save) whether it has been paged and whether it has successfully performed random access. In this way, after the first device receives the first signaling, the first device can determine whether to respond to the second signaling / first signaling according to whether it has been paged and whether it has successfully performed random access.

[0212] Optionally, for the convenience of the following description, the signaling used to page the first device is referred to as the first message. After the first device receives the first message, the first device records whether it has been paged and whether it has successfully performed random access for no more than a first time length. After the first time length is exceeded, the first device directly processes the flow as if it has not received the first message.

[0213] Optionally, after the first device receives the first message, the first device records a time when the first device is paged and a time when the first device is successfully accessed randomly, and the time when the first device is paged is not more than a first time length, and the time when the first device is successfully accessed randomly is not more than a second time length. After the first time length is exceeded, the first device is directly processed as a flow of not being paged. After the second time length is exceeded, the first device is directly processed as a flow of not being successfully accessed randomly. Correspondingly, the second device can know, according to a time when the first message is sent, for how long the first device records whether the first device is paged and whether the first device is successfully accessed randomly. After the second device sends the first message, if the first time length is exceeded, the second device determines that the first device cannot record whether the first device is paged; and if the second time length is exceeded, the second device determines that the first device cannot record whether the first device is successfully accessed randomly.

[0214] There can be various implementation manners for the first device to determine the end time of the first time length, that is, how to determine whether the first time length is ended, and the present application does not limit this.

[0215] For example, in a possible example, after the first device receives the first message, a timer (or a clock) can be started. The start time of the timer can be determined according to the receiving time or the sending time of the first message. For example, the start time of the timer is the time when the first message is received. For another example, the first device starts the timer when the first device is determined to be paged by the first message; for example, the first message can carry mask information or group identification or identification information, and the first device can determine whether the first device is paged by the first message according to the mask information or the group identification or the identification information; the first device can not start the timer when the first device is determined to be not selected or paged by the first message. For another example, the start time of the timer is related to the receiving time of the first message, for example, the first device starts the timer after a first time delay after the first device receives the first message. The timing duration of the timer is the first time length. The time when the timer stops running is the end time of the first time length.

[0216] The present application does not limit how the timer implements timing. For example, implementation manner one, when the timer is started, the initial value is 0, and during the running of the timer, the timing duration of the timer is incremented, and when the timing duration of the timer reaches the first time length, the timer stops running. Implementation manner two, when the timer is started, the initial value is the first time length, and during the running of the timer, the timing duration of the timer is decremented, and when the timing duration of the timer reaches 0, the timer stops running.

[0217] Optionally, if the first device receives a new first message within the first time length, there are two implementation manners: 1. The starting time of the first time length can be reset. The starting time after the reset can be determined according to the receiving time or the sending time of the new first message, and the specific manner can refer to the manner of determining the starting time of the first time length. For example, if the first device starts a timer, and the first device receives a new first message during the running of the timer, the timer can be restarted, and the timing duration of the restarted timer is the first time length. 2. The starting time of the first time length is not reset, that is, the timer is not restarted, and the running of the timer is continued.

[0218] In another possible example, the ending time of the first time length can also be related to the time required for charging and discharging the first device. For example, the time required for charging and discharging a storage module (such as a storage capacitor or a latch or a register or a memory) in the first device is a third time length, and the first time length is equal to the third time length. After the first device receives the first message, the storage module is fully charged, and after the storage module is fully charged, the storage module is discharged. The time when the power of the storage module is consumed or the power of the storage module is lower than a threshold (or lower than the threshold) is the ending time of the first time length, that is, the power of the storage module is consumed or the power of the storage module is lower than a threshold (or lower than the threshold), which indicates the end of the first time length.

[0219] Optionally, if the first device receives a new first message within the first time length, there are two implementation manners: 1. After the first device receives the first message, the storage module is fully charged, and if the first device receives a new first message during the discharging process of the storage module, the storage module is fully charged and discharged again. 2. After the first device receives the first message, the storage module is fully charged, and if the first device receives a new first message during the discharging process of the storage module, the storage module continues the original discharging process.

[0220] Whether the power of the storage module in the first device is consumed or the power of the storage module is lower than a threshold can be indicated by a power variable, such as the power variable being “1” indicating that the capacitor has power, and the power variable being “0” indicating that the capacitor has no power, that is, the power is consumed or the power is lower than a threshold.

[0221] The above is only an example, and the first device specifically determines the ending time of the first time length, which is not limited in the application.

[0222] There can be various implementation manners for the first device to determine the first time length, which is not limited in the application.

[0223] For example, in one possible example, the first time duration can be preset or predefined. In another possible example, the first time duration can also be indicated by the first message, or the first time duration can also be indicated by other messages or information. For example, the first device receives time information from the second device, the time information indicating the first time duration, and the time information can be sent before the first message.

[0224] In another possible example, the first time duration is determined according to at least one of a device type, a power consumption level, a transmission parameter of the uplink message, and a number of the first devices selected by the first message. Optionally, the transmission parameter comprises at least one of a repetition number, a coding mode, a size of a transmission block, or an uplink transmission bandwidth.

[0225] The device type can be a device type of the first device, for example, the device type can be a passive device or a semi-passive device, etc.

[0226] The power consumption level can indicate a power consumption range of the first device when working. For example, the power consumption level 1 corresponds to a power consumption range of 0-10 microwatt (μW), and the power consumption level 2 corresponds to a power consumption range of 11-100 μW.

[0227] The repetition number can be a bit repetition number, a level repetition number, etc.

[0228] The coding mode can be a convolution code, a polar code, etc.

[0229] The transmission block can comprise one or more of a preamble bit, an uplink data bit (UL data size), a mid-amble bit, a post-amble bit, and a CRC bit, and thus, a bit number of the transmission block can be a sum of bit numbers of one or more of the preamble bit, the uplink data bit, the mid-amble bit, the post-amble bit, and the CRC bit. It should be noted that the transmission block can also be referred to as a data block, data, a data segment, a bit sequence, etc.

[0230] The uplink transmission bandwidth can be an uplink transmission bandwidth of the first device, for example, the first device is an A-IoT terminal device, and thus, the uplink transmission bandwidth can be an uplink transmission bandwidth of the A-IoT terminal device.

[0231] For example, the device type of the first device is passive equipment, and the maximum value of the first time length can be 100 seconds (s); the device type of the first device is semi-passive equipment, and the maximum value of the first time length can be 200 s. For another example, the power consumption level of the first device is power consumption level 1 described above, and the maximum value of the first time length can be 100 s; the power consumption level of the first device is power consumption level 2 described above, and the maximum value of the first time length can be 200 s. The above is only an example, and the correspondence between the device type and / or the power consumption level and the specific value of the first time length can be preset or predefined, can be defined by a protocol, or can be configured by the second device, and the present application is not limited thereto.

[0232] For another example, the first time length and the number of the first devices and at least one of the repetition number, the encoding mode, the transport block size, or the uplink transmission bandwidth have a corresponding relationship. For example, the number of the first devices is 100, the repetition number is 4, and the encoding mode is convolution code, and then the first time length is time length 1; the number of the first devices is 60, the repetition number is 4, and the encoding mode is polar code, and then the first time length is time length 2. The above corresponding relationship can be configured by the second device, can be preset or predefined, or can be defined by a protocol, and the present application is not limited thereto.

[0233] In another implementation, the first message can include a session identifier, one session identifier corresponds to one session, and each session can also correspond to a time length, and the first time length is the time length corresponding to the session identifier in the first message. The session identifier is only an example, and the session identifier can also be replaced or understood as an index or a service identifier or a service identifier.

[0234] For example, the relationship between the session and the time length is shown in Table 1.

[0235] Table 1

[0236]

[0237] In combination with Table 1, if the session identifier in the first message is S0, then the first time length is time length 1; if the session identifier in the first message is S2, then the first time length is time length 3, and other cases will not be described.

[0238] Optionally, whether the first device is paged and whether the random access is successful can be stored by a storage module (e.g., a storage capacitor or a latch or a register or a memory). For example, when the storage capacitor is powered, it can maintain 1 or 0 (e.g., 1 means that the random access is successful, and 0 means that the random access is not successful), or maintain a high or low level (e.g., a high level means that the random access is successful, and a low level means that the random access is not successful), to distinguish between the two different cases. When the storage capacitor is out of power, the stored content is no longer maintained. For another example, when the memory is used to store whether the random access is successful, the value of 0 of the memory means that the current random access is successful, and the value of 1 of the memory means that the current random access is not successful. When the memory is out of power, the stored content is no longer maintained.

[0239] In a possible example, the first signaling / third signaling can be indicated as a message for paging the device by an LCID in the first signaling / third signaling, or can be indicated as a message for paging the device by identification information (carried in the MAC or carried in a message header field (a high layer field)).

[0240] In a possible example, the first signaling can not carry the first indication information, i.e., the first signaling and the third signaling can not be distinguished by the first indication information. For example, the received signaling can be distinguished as the first signaling or the third signaling by different LCIDs or different identification information. For example, when the LCID / identification information in the received signaling is LCID 1 / identification information 1, it indicates that the signaling is the third signaling. When the LCID / identification information in the received signaling is LCID 2 / identification information 2, it indicates that the signaling is the first signaling.

[0241] In a possible example, the first signaling can not carry the first indication information, i.e., the first signaling and the third signaling can not be distinguished. After receiving the first signaling, the first device can determine whether to respond to the first signaling according to whether the first device is currently paged and whether the random access is successful. For example, if the first device is paged but the random access is not successful, or if the first device does not receive the signaling for paging the first device, the first device can respond to the first signaling. If the first device is successfully randomly accessed, the first device does not respond to the first signaling.

[0242] In a possible example, the first signaling can not carry the first indication information, i.e., the first signaling and the third signaling can not be distinguished by the first indication information. For example, the first signaling and the third signaling can carry an event identifier. If the time interval between the first device receiving the third signaling and the first signaling satisfies a certain time threshold, and the event identifier carried in the third signaling is the same as that in the first signaling, the first device responds to the third signaling and can no longer respond to the first signaling.

[0243] It can be seen that based on Figure 5 In the described method, after the second device sends the third signaling for paging the first device, it can resend the first signaling for instructing the first device to access the second device. This allows the first device to successfully perform random access based on the first signaling if it does not receive the third signaling. Furthermore, the first signaling also carries first indication information for instructing a device that successfully performed random access not to respond to the second signaling, and for instructing a device that did not successfully perform random access after being paged to respond to the second signaling. This helps prevent a device that successfully performed random access from performing random access again, which could cause the device to repeatedly perform the same service.

[0244] See Figure 7 , Figure 7 A schematic diagram of a flow chart of an information transmission method provided in an embodiment of the present application, wherein:

[0245] 701. A second device sends first signaling, where the first signaling includes first indication information. The first signaling is used to instruct the first device to access the second device, where the first indication information indicates one or more of the following: a device that successfully accesses the second device maintains its current device state; and a device that fails to access the second device after being paged maintains its current device state. Accordingly, the first device may receive the first signaling.

[0246] In an embodiment of the present application, the second device may broadcast the first signaling. That is, in addition to the first device receiving the first signaling, other devices may also receive the first signaling. Optionally, in addition to instructing the first device to access the second device, the first signaling may also instruct one or more other devices to access the second device.

[0247] Optionally, when the second device is a base station / access network device, the first signaling may be used to instruct the first device to access the network. When the second device is a terminal device, the first signaling may be used to instruct the first device to access the terminal device. Optionally, the first device may access the network through the terminal device.

[0248] Optionally, the first signaling can also be used to trigger / instruct the first device to send uplink data, or to trigger / instruct / request the first device to perform a first service, wherein the first service may include at least one of the following: paging service, inventory service, command service (such as reading, writing, deactivating, locking, etc.), positioning service, and sensing service.

[0249] Optionally, the first signaling may be a signaling for paging the first device, such as a paging signaling. Alternatively, the first signaling may also be other signaling that instructs the first device to access the second device, which is not limited in the embodiments of the present application. In the embodiments of the present application, "paging" may also be replaced or understood as "selection" or "trigger" or "indication". For ease of description, the embodiments of the present application are described using "paging" as an example. For ease of description, the following text also describes the first signaling as a signaling for paging the first device as an example. As mentioned above, the paging signaling may also be replaced or understood as an initial trigger (message), a trigger message, a downlink (DL) trigger (message), a paging-like message, or a select signaling.

[0250] For instructions on the signaling for paging the first device, successful random access, and failure of random access after being paged, please refer to the description under step 501.

[0251] In an embodiment of the present application, the first indication information may only instruct the device that has successfully performed random access to maintain the current device state; or, the first indication information may only instruct the device that has not successfully performed random access after being paged to maintain the current device state; or, the first indication information instructs the device that has successfully performed random access to maintain the current device state and instructs the device that has not successfully performed random access after being paged to maintain the current device state.

[0252] Optionally, random access can also be replaced or understood as: access, data transmission, contention resolution or identification. Random access success can also be replaced or understood as: access success, data transmission success, contention resolution success, identification success, service completion. Failure to perform random access successfully can be replaced or understood as: failure to perform access successfully, failure to perform data transmission successfully, failure to perform contention resolution successfully, failure to perform identification successfully, service incomplete. Failure to perform random access successfully after being paged can be replaced or understood as: failure to perform access successfully after being paged, failure to perform data transmission successfully after being paged, failure to perform contention resolution successfully after being paged, failure to perform identification successfully after being paged, service incomplete after being paged, pending random access, pending data transmission or pending contention resolution. For example, when random access is replaced or understood as successful data transmission, failure to perform random access successfully can be replaced or understood as failure to perform data transmission successfully. When random access is replaced or understood as successful contention resolution, failure to perform random access successfully can be replaced or understood as failure to perform contention resolution successfully. Success can also be understood as completion or successful completion, and the same applies to the following text.

[0253] Optionally, the second device can further send a third signaling before sending the first signaling, the third signaling being used for paging the first device. The third signaling can refer to the description of step 501, and will not be repeated here.

[0254] The triggering manner of the first signaling and the third signaling can refer to the description of step 501, and will not be repeated here.

[0255] Optionally, the first indication information indicates one or more of the following: the device that succeeds in random access maintains the current device state, the device that fails in random access after being paged maintains the current device state, or can be alternatively or understood as: the first indication information indicates that the first signaling is the signaling for paging the first device that is retransmitted, or the first indication information indicates that the first signaling is the signaling for paging the first device again, or the first indication information indicates that the device that the first signaling acts on is the device that is not paged before receiving the first signaling. The device that is not paged is the device that does not receive the signaling for paging the device.

[0256] As to how the first indication information indicates one or more of the following: the device that succeeds in random access maintains the current device state, the device that fails in random access after being paged maintains the current device state, it can refer to the description of the first indication information indicating by the first field in the first signaling in step 501, and will not be repeated here.

[0257] In the embodiments of the present application, maintaining can be alternatively or understood as: not changing, not affecting or not jumping, etc. In the embodiments of the present application, state can be alternatively or understood as: flag bit, variable or parameter, etc.

[0258] 702. The second device sends a second signaling. The second signaling is used for triggering a random access opportunity. Correspondingly, the first device can receive the second signaling.

[0259] In the embodiments of the present application, the second device can send the first signaling, and then send the second signaling. The second signaling can refer to the description of step 501, and will not be repeated here.

[0260] In the embodiments of the present application, after the first device receives the first signaling, there are the following cases 4-6:

[0261] Case 4. If the first device receives the first signaling in the case of succeeding in random access, the first device maintains the current device state as the first state, the first state being the state of the first device when succeeding in random access. The first device does not respond to the second signaling in the first state.

[0262] That is to say, before receiving the first signaling, the first device has already received signaling for paging the first device, such as the third signaling. After receiving the signaling, the first device responds to the signaling, waits for the completion of random access, and in the subsequent process responds to the signaling for triggering the random access opportunity to successfully perform random access and enter the first state. Since the first device has successfully performed random access, in this case, after receiving the first signaling, the first device maintains the first state, so that the first device does not respond to the second signaling, thereby avoiding the first device from performing random access again, causing the first device to perform the same service again, thereby increasing the power consumption of the first device and causing low service processing efficiency.

[0263] Optionally, if the first device receives the first signaling when random access is successful, the first device maintains the current device state in the first state. This can also be replaced or understood as: if the first device receives the first signaling when random access is successful, the first device responds to the first indication information. Since the first indication information instructs the device that successfully accessed the random access to maintain the current device state, the first device maintaining the current device state in the first state when random access is successful can also be understood as the first device responding to the first indication information.

[0264] Optionally, if the first device receives the first signaling after random access is successful, the first device maintains the current device state in the first state. This can also be replaced or understood as follows: if the first device receives the first signaling after random access is successful, the first device does not respond to the first signaling. Because the first signaling can be understood as a retransmitted signaling for paging the device, the first signaling itself is sent to a device that has not received the signaling for paging it. Since the first device has already received the signaling for paging the first device, the first device does not need to respond to the first signaling to avoid performing random access again. Specifically, if the first device receives the first signaling after random access has already been successful, then after receiving the first signaling, the first device will determine, based on the first indication information, whether the first signaling is a retransmitted signaling for paging the first device or not an initial signaling for paging the first device. After the first device determines that the first signaling is a retransmitted signaling for paging the first device or not an initial signaling for paging the first device, the first device does not respond to the first signaling. In this embodiment of the present application, the first device not responding to the first signaling can also be replaced or understood as the first device ignoring the first signaling.

[0265] Optionally, the first device not responding to the second signaling can also be understood as not initiating (entering) random access, not sending uplink message (such as random access message, uplink data, etc.), not responding to downlink message related to (such as used to trigger random access procedure) random access. Optionally, the second signaling can be received or decoded at physical layer, but the high layer (protocol layer entity above physical layer) entity does not respond to the second signaling, or does not trigger the procedure related to the second signaling.

[0266] Case 5. If the first device receives the first signaling in the case that the first device has not successfully performed random access after being paged, the first device maintains the current device state as the second state, which is the state of the first device after being paged and before successfully performing random access. The first device in the second state responds to the second signaling.

[0267] That is, the first device has received the signaling for paging the first device, such as the third signaling, before receiving the first signaling. And the first device responds to the signaling and waits for the completion of random access, and has not successfully performed random access, the first device is in the second state. The first device not successfully performing random access here includes two cases, the first case is that the random access has not started, and the second case is that the random access has failed. Since the first device has not successfully performed random access, in this case, the first device maintains the second state after receiving the first signaling, so that the first device can respond to the second signaling, that is, the first device performs the procedure related to random access based on the second signaling.

[0268] Optionally, if the first device receives the first signaling in the case that the first device has not successfully performed random access after being paged, the first device maintains the current device state as the second state, which can also be replaced or understood as: if the first device receives the first signaling in the case that the first device has not successfully performed random access after being paged, the first device responds to the first indication information. Since the function of the first indication information is to indicate the device that has not successfully performed random access after being paged to maintain the current device state, the first device maintaining the current device state as the second state in the case that the first device has not successfully performed random access after being paged can also be understood as the first device responding to the first indication information.

[0269] Optionally, if the first device receives the first signaling in the case that the first device fails to perform the random access after being paged, the first device maintains the current device state as the second state, which can be alternatively or understood as: if the first device receives the first signaling in the case that the first device fails to perform the random access after being paged, the first device does not respond to the first signaling. Since the first signaling can be understood as the retransmitted signaling for paging the device, the first signaling itself is used to send to the device that does not receive the signaling for paging it. Since the first device has already received the signaling for paging the first device, the first device can continue to perform the subsequent process triggered by the signaling, i.e., responding to the second signaling. Therefore, the first device does not need to respond to the first signaling. Specifically, if the first device receives the first signaling in the case that the first device fails to perform the random access after being paged, the first device, after receiving the first signaling, determines whether the first signaling is the retransmitted signaling for paging the first device or is not the initial transmitted signaling for paging the first device according to the first indication information. After the first device determines whether the first signaling is the retransmitted signaling for paging the first device or is not the initial transmitted signaling for paging the first device, the first device does not respond to the first signaling.

[0270] In the case 4 and the case 5, not responding to the first signaling can also mean not performing the related process triggered by the first signaling, such as receiving the first signaling as a paging message, not responding to / processing the parameter configuration carried in the paging, or not performing the random access, the data transmission process triggered after the paging succeeds. In the case 4 and the case 5, not responding can be alternatively or understood as ignoring or discarding.

[0271] It can be seen that when the first device receives the first signaling in the case that the first device fails to perform the random access after being paged, by maintaining the current device state of the first device as the second state, it is beneficial for the first device to successfully perform the random access and prevent the service of the first device from being unable to be completed. For example, in the inventory service, the first device does not complete the random access, and then the device cannot be inventoried by the reader.

[0272] Case 6. If the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device enters the second state, which is the state of the first device in the case that the first device fails to perform the random access after being paged. The first device, in the second state, responds to the second signaling.

[0273] For some reasons (e.g., the first device is out of power, the power is below a threshold, the receiver is not in an active state, etc.), the first device does not successfully receive the signaling for paging the first device, and does not perform the random access. Therefore, after receiving the first signaling, the first device can enter the second state, so as to respond to the second signaling, i.e., the first device performs the random access related procedure based on the second signaling, so as to successfully perform the random access, to complete the subsequent service procedure.

[0274] Optionally, if the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device enters the second state, which can be alternatively or understood as: if the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device responds to the first signaling. The first device responding to the first signaling means that the first device enters the second state. Since the first signaling can be understood as the retransmitted signaling for paging the device, the first signaling itself is used to be sent to the device that does not receive the signaling for paging it. Therefore, when the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device can respond to the first signaling.

[0275] Optionally, responding to the first signaling can also be performing the related procedure triggered by the first signaling, such as receiving the first signaling as a paging message, and responding to the paging can be understood as responding to / handling the parameter configuration carried in the paging, or performing the random access triggered after the paging is successful, the data transmission procedure.

[0276] As can be seen, when the first device does not receive the signaling for paging the first device before receiving the first signaling, by making the first device respond to the second signaling, it is beneficial for the first device to successfully perform the random access, and prevents the service of the first device from being unable to be completed.

[0277] In a possible example, if the first device does not receive the third signaling for paging the first device before receiving the first signaling, the first device ignores the first indication information. That is, if the first device does not receive the third signaling for paging the first device before receiving the first signaling, the first device can directly respond to the first signaling, without interpreting the first indication information in the first signaling.

[0278] In a possible example, the first signaling further includes first configuration information, which is used to configure the parameters of the communication between the first device and the second device. The description of the first configuration information can be referred to the description of the first configuration information in the foregoing, which is not described herein.

[0279] Optionally, the third signaling includes second configuration information, which is used to configure the parameters of the communication between the first device and the second device. The first configuration information can be the same as or different from the second configuration information.

[0280] Optionally, the first configuration information may not be carried in the first signaling, and the first configuration information may be sent through other signaling, such as query signaling or queryrep signaling, which is not limited in the embodiment of the present application.

[0281] Optionally, the third signaling may further include second indication information. The second indication information is used to indicate that all devices paged by the third signaling respond to the third signaling. Alternatively, the second indication information is used to indicate that all devices paged by the third signaling respond to the signaling used to trigger random access. Alternatively, the second indication information is used to indicate that all devices paged by the third signaling enter the second state. Alternatively, the second indication information is used to indicate that the third signaling acts on all devices paged by the third signaling. Alternatively, the second indication information is used to indicate that the third signaling is an initial transmission for paging the first device. Of course, the third signaling may not carry the second indication information, and this embodiment of the present application is not limited thereto.

[0282] In one possible example, the device state of the first device includes a first state, a second state, and a third state; the first state is the state of the first device when random access is successful, the second state is the state of the first device when random access is unsuccessful after being paged, and the third state is the state of the first device when it does not receive signaling for paging the first device. Optionally, the first state may also be referred to as an identification state, which may indicate whether the first device is identified. For example, when service data (which may be identification information of the first device) sent by the first device is successfully received by the second device, the identification state is identified; otherwise, it is unidentified.

[0283] For example, Figure 8 The transition relationship between the first state, the second state and the third state is shown. When the first device does not receive the signaling for the paging device, the first device is in the third state. Figure 8 As shown, the first device is in the third state: if the first device is not the signaling received (such as the signaling for instructing the first device to perform random access, the same applies hereinafter, Figure 8 If the signaling is a paging signaling, for example, the device state of the first device remains unchanged. If the first device is a device paged by the received signaling, the device state of the first device changes from the third state to the second state.

[0284] The first device is in the second state: if the first device is the device paged by the received signaling, the device state of the first device remains unchanged. If the first device is not the device paged by the received signaling, the device state of the first device changes from the second state to the third state. When the first device successfully completes random access, the device state of the first device changes from the second state to the first state.

[0285] The first device is in a first state: if the first device is a device paged by the received signaling and the received signaling includes the first indication information, the device state of the first device remains unchanged. If the first device is not a device paged by the received signaling, the device state of the first device changes from the first state to a third state.

[0286] In a possible example, the device state of the first device includes a first state and a second state; the first state is the state of the first device when random access is successful, and the first state is also the state of the first device when it does not receive signaling for paging the first device; the second state is the state of the first device when random access is not successful after being paged.

[0287] For example, Figure 9 The transition relationship between the first state and the second state is shown. When the first device does not receive the signaling for the paging device, the first device is in the first state. Figure 9 As shown, the first device is in the first state: if the first device is not the signaling received (such as the signaling for instructing the first device to perform random access, the same applies hereinafter, Figure 9 If the signaling is a device paged by the received signaling (taking the paging signaling as an example), the device state of the first device remains unchanged. If the first device is a device paged by the received signaling, and the signaling includes the first indication information, and the random access of the first device is successful, the device state of the first device remains unchanged. If the first device is a device paged by the received signaling, and the signaling includes the first indication information, and the random access of the first device is not successful, the device state of the first device changes from the first state to the second state. If the first device is a device paged by the received signaling, and the signaling does not include the first indication information, the device state of the first device changes from the first state to the second state.

[0288] The first device is in the second state: if the first device is the device paged by the received signaling, the device state of the first device remains unchanged; if the first device is not the device paged by the received signaling, the device state of the first device changes from the second state to the first state; when the first device successfully completes random access, the device state of the first device changes from the second state to the first state;

[0289] In order to better understand the embodiments of the present application, the following examples are given. Figure 7 The described method is further explained:

[0290] For example, Figure 10 For example, the third signaling is paging signaling 1, the first signaling is paging signaling 2, the second signaling is queryrep signaling, and the device state of the first device includes the first state, the second state, and the third state.

[0291] 1001. The core network device sends a service request 1 to the reader / writer. The service request 1 carries mask information 1. The mask information 1 is used to indicate the selection of UE1, UE2, and UE3 to execute service 1.

[0292] Correspondingly, the reader receives the service request 1.

[0293] 1002. The reader sends paging signaling 1 based on the service request 1. The paging signaling 1 includes mask information 1, configuration information 1, and indication information 1. The indication information 1 is used to indicate that the paging signaling 1 is an initial paging signaling.

[0294] UE1 and UE2 receive the paging signaling 1, and the device states of UE1 and UE2 change from the third state to the second state. UE3 does not receive the paging signaling 1 because it has not started working yet, and the device state of UE3 is the third state.

[0295] 1003. After sending the paging signaling 1, the reader sends a query signaling.

[0296] 1004. After sending the query signaling, the reader sends a queryrep signaling.

[0297] 1005. UE1 performs RA.

[0298] After receiving the query signaling and queryrep signaling, UE1 successfully performs random access based on the query signaling and queryrep signaling, and the device state of UE1 changes from the second state to the first state. UE2 has not successfully performed random access based on the query signaling and queryrep signaling, so the state of UE2 is still the second state.

[0299] 1006. The reader sends paging signaling 2, which includes mask information 1, configuration information 1 and indication information 2. The indication information 2 instructs the device that has successfully accessed the random access not to respond to the queryrep signaling and instructs the device that has not successfully accessed the random access after being paged to respond to the queryrep signaling.

[0300] At this point, UE3 has already begun operating, so UE1 through UE3 all receive paging signaling 2. After receiving paging signaling 2, UE1 maintains its device state in the first state, preventing UE1 from responding to subsequent queryrep signaling. After receiving paging signaling 2, UE2 maintains its device state in the second state, allowing UE2 to respond to subsequent queryrep signaling for random access. After receiving paging signaling 2, UE3 changes its device state from the third state to the second state, allowing UE3 to respond to subsequent queryrep signaling for random access.

[0301] 1007. The reader sends a queryrep signaling.

[0302] 1008. UE2 performs RA.

[0303] UE2 performs random access based on the queryrep signaling sent after the paging signaling 2, and changes to the first state after the random access is successful.

[0304] 1009. UE3 performs RA.

[0305] UE3 performs random access based on the queryrep signaling sent after the paging signaling 2, and changes to the first state after the random access is successful.

[0306] 1010. The core network device sends a service request 2 to the reader / writer, where the service request 2 carries mask information 2.

[0307] Correspondingly, the reader receives the service request 2.

[0308] 1011. The reader sends paging signaling 3 based on the service request 2. The paging signaling 3 includes mask information 2, configuration information 2, and indication information 3. The indication information 3 is used to indicate that the paging signaling 3 is an initial paging signaling.

[0309] Since the paging signaling 3 does not page UE1, UE2, and UE3, the device states of UE1, UE2, and UE3 change to the third state.

[0310] For example, Figure 11 For example, the third signaling is paging signaling 1, the first signaling is paging signaling 2, the second signaling is queryrep signaling, and the device state of the first device includes a first state and a second state.

[0311] 1101. The core network device sends a service request 1, which carries mask information 1. The mask information 1 is used to indicate the selection of UE1, UE2, and UE3 to execute service 1.

[0312] Accordingly, the reader receives the service request 1.

[0313] 1102. The reader sends paging signaling 1 including mask information 1, configuration information 1 and indication information 1 based on the service request 1. The indication information 1 indicates that the paging signaling 1 is the initial paging signaling for paging UE1, UE2 and UE3.

[0314] UE1 and UE2 receive the paging signaling 1, and the device state of UE1 and UE2 changes from the first state to the second state. UE3 has not started working, and thus does not receive the paging signaling 1. The device state of UE3 is the first state.

[0315] 1103. After sending the paging signaling 1, the reader sends query signaling.

[0316] 1104. After sending the query signaling, the reader sends queryrep signaling.

[0317] 1105. UE1 performs RA.

[0318] After receiving the query signaling and the queryrep signaling, UE1 successfully performs random access based on the query signaling and the queryrep signaling, and the device state of UE1 changes from the second state to the first state. UE2 has not successfully performed random access based on the query signaling and the queryrep signaling, and thus the device state of UE2 is still the second state.

[0319] 1106. The reader sends paging signaling 2 including mask information 1, configuration information 1 and indication information 2. The indication information 2 indicates that the device which has successfully performed random access does not respond to the queryrep signaling, and indicates that the device which has not successfully performed random access after being paged responds to the queryrep signaling.

[0320] At this time, UE3 has started working, and thus UE1-UE3 all receive the paging signaling 2. After receiving the paging signaling 2, UE1 maintains the device state as the first state, so that UE1 does not respond to the subsequent queryrep signaling. After receiving the paging signaling 2, UE2 maintains the device state as the second state, so that UE2 responds to the subsequent queryrep signaling to perform random access. After receiving the paging signaling 2, UE3 changes the device state from the first state to the second state, so that UE3 responds to the subsequent queryrep signaling to perform random access.

[0321] 1107. The reader sends a queryrep signaling.

[0322] 1108. UE2 performs RA.

[0323] UE2 performs random access based on the queryrep signaling sent after the paging signaling 2, and changes to the first state after the random access is successful.

[0324] 1109. UE3 performs RA.

[0325] UE3 performs random access based on the queryrep signaling sent after the paging signaling 2, and changes to the first state after the random access is successful.

[0326] 1110. The core network device sends a service request 2 to the reader / writer, where the service request 2 carries mask information 2.

[0327] Correspondingly, the reader receives the service request 2.

[0328] 1111. The reader sends paging signaling 3 based on the service request 2. The paging signaling 3 includes mask information 2, configuration information 2, and indication information 3. The indication information 3 is used to indicate that the paging signaling 3 is an initial paging signaling.

[0329] Since the paging signaling 3 does not page UE1, UE2, and UE3, the device states of UE1, UE2, and UE3 remain unchanged.

[0330] Optionally, for ease of description below, the signaling used to page the first device is referred to as a first message. When the first device's device state includes a first state, a second state, and a third state, after receiving the first message, the first device records its own device state for no longer than a first duration. After the first duration has expired, the first device directly processes the process as if it had not received the first message.

[0331] Optionally, when the device status of the first device only includes the first status and the second status, after the first device receives the first message, the time for recording whether it has been paged shall not exceed the first duration, and the time for recording its own device status shall not exceed the second duration. After exceeding the first duration, the first device is directly treated as a process that has not been paged. After exceeding the second duration, the first device is directly treated as a process that has not been successfully accessed. Accordingly, the second device can know how long it will take for the first device to record whether it has been paged and whether random access has been successful based on the time when the first message was sent. After the second device sends the first message, if the first duration is exceeded, the second device determines that the first device cannot record whether it has been paged; if the second duration is exceeded, the second device determines that the first device cannot record whether random access has been successful.

[0332] How the first device determines the end time of the first duration and the first duration can be found in the above Figure 5 The description in the corresponding embodiment is not repeated here.

[0333] Optionally, the device state of the first device and / or whether it has been paged can be stored via a power storage module (such as a storage capacitor, a latch, a register, or a memory). For example, if two device states of the first device are to be stored, a 1-bit variable is sufficient. If three device states of the first device are to be stored, a 2-bit variable is required. For example, using a storage capacitor to store two device states of the first device as an example, when the storage capacitor is charged, it can maintain a 1 or 0 (e.g., 1 represents the first state, 0 represents the second state), or maintain a high or low level (a high level represents the first state, a low level represents the second state) to distinguish between the two different states. When the storage capacitor is depleted, the state is no longer maintained. For another example, using a 1-bit memory to store two device states of the first device, a memory value of 0 indicates the current state is the first state, and a memory value of 1 indicates the current state is the second state. When the memory is depleted, the state is no longer maintained.

[0334] In one possible example, the LCID in the first signaling / third signaling can be used to indicate that the first signaling / third signaling is a message for the paging device, or the identification information (carried in the MAC or in a message header field (high-layer field)) can be used to indicate that the first signaling / third signaling is a message for the paging device.

[0335] In one possible example, the first signaling may not carry the first indication information, that is, the first signaling and the third signaling may not be distinguished by the first indication information. For example, different LCIDs or different identification information may be used to distinguish whether the received signaling is the first signaling or the third signaling. For example, when the LCID / identification information in the received signaling is LCID 1 / identification information 1, it indicates that the signaling is the third signaling. When the LCID / identification information in the received signaling is LCID 2 / identification information 2, it indicates that the signaling is the first signaling.

[0336] In one possible example, the first signaling may not carry the first indication information, that is, the first signaling and the third signaling may not be distinguished. After receiving the first signaling, the first device may determine whether to respond to the first signaling based on whether it has been paged and whether random access has been successful. For example, if the first device has not successfully performed random access after being paged or has not received signaling for paging the first device, the first device maintains the current device state in the second state or enters the second state. If the first device successfully performs random access, the first device maintains the current device state in the first state.

[0337] In one possible example, the first signaling may not carry the first indication information, that is, the first signaling and the third signaling may not be distinguished by the first indication information. For example, the first signaling and the third signaling may carry an event identifier. If the time interval between the first signaling and the third signaling received by the first device satisfies a certain time threshold and carries the same event identifier, the first device has already responded to the third signaling and may no longer respond to the first signaling.

[0338] It can be seen that based on Figure 7 In the described method, after the second device sends the third signaling for paging the first device, it can resend the first signaling for instructing the first device to access the second device. This allows the first device to successfully perform random access based on the first signaling even if it does not receive the third signaling. Furthermore, the first signaling also carries first indication information for instructing devices that successfully perform random access to maintain their current device state, and for instructing devices that fail to perform random access after being paged to maintain their current device state. This helps prevent devices that successfully perform random access from performing random access again, which could cause them to repeatedly execute the same service.

[0339] Due to the limited capacitance / energy storage of the first device, after receiving the paging signaling, the first device may lose power (the power is exhausted or the power is below a certain threshold) before the service is completed. After the power is lost, the configuration information of the parameters used to configure the communication between the first device and the second device included in the paging signaling will be lost. This will result in the inability to communicate normally between the first device and the second device. In order to solve this technical problem, the embodiments of the present application also provide another information transmission method and communication device. Please refer to Figure 12 , Figure 12 A schematic diagram of a flow chart of an information transmission method provided in an embodiment of the present application, wherein:

[0340] 1201. A second device sends a first signaling message, where the first signaling message includes first configuration information, where the first configuration information is used to configure communication parameters between the first device and the second device, and the first signaling message is used to page the first device. Accordingly, the first device may receive the first signaling message.

[0341] In the embodiments of the present application, the second device can send the first signaling for paging the first device based on the service request sent by the core network after receiving the service request. The second device can send the first signaling in a broadcast manner. That is, in addition to the first device, other devices can also receive the first signaling. Optionally, in addition to paging the first device, the first signaling can also page one or more other devices.

[0342] In the embodiments of the present application, the "paging" can also be replaced by or understood as "selecting" or "triggering" or "indicating". For the convenience of description, the embodiments of the present application are described by taking "paging" as an example. For the convenience of description, the following text is also described by taking the first signaling as an example. As described above, for example, the first signaling can be a paging signaling, an initial trigger (message), a trigger message, a downlink (DL) trigger (message), a paging-like message or a select signaling. The description about the signaling for paging the first device can be referred to the description under step 501, which is not repeated here.

[0343] The description about the first configuration information can be referred to the description of the first configuration information under step 502, which is not repeated here.

[0344] Optionally, the triggering manner of the first signaling can be referred to the triggering manner of the third signaling under step 501, which is not repeated here.

[0345] 1202. The second device sends the second signaling, and the second signaling includes the first configuration information. The second signaling is used for triggering a random access opportunity. Correspondingly, the first device can receive the second signaling.

[0346] The description about the second signaling can be referred to the description under step 501, which is not repeated here.

[0347] In a possible example, the device state of the first device includes a first state, a second state and a third state. The first state is a state of the first device when the first device successfully performs random access. The second state is a state of the first device when the first device is paged but does not successfully perform random access. The third state is a state of the first device when the first device does not receive the signaling for paging the first device.

[0348] The description about the successful random access and the paged but not successfully performed random access can be referred to the description under step 501.

[0349] Optionally, random access can also be replaced or understood as: access, data transmission, contention resolution or identification. Random access success can also be replaced or understood as: access success, data transmission success, contention resolution success, identification success, service completion. Failure to perform random access successfully can be replaced or understood as: failure to perform access successfully, failure to perform data transmission successfully, failure to perform contention resolution successfully, failure to perform identification successfully, and service incomplete. Failure to perform random access successfully after being paged can be replaced or understood as: failure to perform access successfully after being paged, failure to perform data transmission successfully after being paged, failure to perform contention resolution successfully after being paged, failure to perform identification successfully after being paged, service incomplete after being paged, pending random access, pending data transmission or pending contention resolution. For example, when random access is replaced or understood as successful data transmission, failure to perform random access successfully can be replaced or understood as failure to perform data transmission successfully. When random access is replaced or understood as successful contention resolution, failure to perform random access successfully can be replaced or understood as failure to perform contention resolution successfully. Success can also be understood as completion or successful completion, and the same applies to the following text.

[0350] For example, Figure 13 The transition relationship between the first state, the second state and the third state is shown. When the first device does not receive the signaling for the paging device, the first device is in the third state. Figure 13 As shown, the first device is in the third state: if the first device is not the device paged by the received signaling, the device state of the first device remains unchanged. If the first device is the device paged by the received signaling, the device state of the first device changes from the third state to the second state.

[0351] The first device is in the second state: if the first device is the device paged by the received signaling, the device state of the first device remains unchanged. If the first device is not the device paged by the received signaling, the device state of the first device changes from the second state to the third state. When the first device successfully completes random access, the device state of the first device changes from the second state to the first state.

[0352] The first device is in the first state: if the first device is not the device paged by the received signaling, the device state of the first device changes from the first state to the third state.

[0353] In a possible example, the device state of the first device includes a first state and a second state; the first state is the state of the first device when random access is successful, and the first state is also the state of the first device when it does not receive signaling for paging the first device; the second state is the state of the first device when random access is not successful after being paged.

[0354] For example, Figure 14 The transition relationship between the first state and the second state is shown. When the first device does not receive the signaling for the paging device, the first device is in the first state.Figure 14 As shown, the first device is in the first state: if the first device is not the device paged by the received signaling, the device state of the first device remains unchanged. If the first device is the device paged by the received signaling, the device state of the first device changes from the first state to the second state.

[0355] The first device is in the second state: if the first device is the device paged by the received signaling, the device state of the first device remains unchanged; if the first device is not the device paged by the received signaling, the device state of the first device changes from the second state to the first state; when the first device successfully performs random access, the device state of the first device changes from the second state to the first state.

[0356] Optionally, the first device may record the device status, and the recorded device status may be maintained for a period of time after power is turned off. Thus, after the first device is powered on again, it is possible to determine whether the first device has been paged and whether random access has been successful based on the recorded information. If it is determined that the first device has been paged and random access has been successful, random access is not performed again. If it is determined that the first device has been paged and random access has not been successful, random access may continue to be performed to avoid the first device being unable to successfully perform random access when it is powered on again.

[0357] In order to better understand the embodiments of the present application, the following examples are given. Figure 12 The described method is further explained:

[0358] For example, Figure 15 For example, the first signaling is paging signaling 1, the second signaling is query signaling, and the device states of the first device include the first state, the second state, and the third state.

[0359] 1501. The core network device sends a service request 1 to the reader / writer. The service request 1 carries mask information 1. The mask information 1 is used to indicate the selection of UE1, UE2, and UE3 to execute service 1.

[0360] Correspondingly, the reader receives the service request 1.

[0361] 1502. The reader sends paging signaling 1 based on the service request 1. The paging signaling 1 includes mask information 1 and configuration information 1.

[0362] Correspondingly, UE1, UE2 and UE3 receive the paging signaling 1, and the device states of UE1, UE2 and UE3 change from the third state to the second state.

[0363] 1503. After sending the paging signaling 1, the reader sends a query signaling, which also includes configuration information 1.

[0364] 1504. After sending the query signaling, the reader sends a queryrep signaling.

[0365] 1505. UE1 performs RA.

[0366] After receiving the query signaling and queryrep signaling, UE1 successfully performs random access based on the query signaling and queryrep signaling, and UE1's device state changes from the second state to the first state. UE2 has not yet successfully performed random access based on the query signaling and queryrep signaling, so UE2's state remains in the second state. UE3 is powered off in the second state and then powered back on after a period of time. After UE3 is powered back on, configuration information 1 in UE3 is lost.

[0367] 1506. The reader sends a query signaling, which also includes configuration information 1.

[0368] After UE3 is powered on again, it receives the query signaling from the reader. Since the query signaling also includes configuration information 1, UE3 can re-acquire configuration information 1 and communicate with the reader based on configuration information 1.

[0369] 1507. The reader sends a queryrep signaling.

[0370] 1508. UE2 performs RA.

[0371] UE2 performs random access based on queryrep signaling, and changes to the first state after the random access is successful.

[0372] 1509. UE3 performs RA.

[0373] UE3 performs random access based on queryrep signaling, and changes to the first state after the random access is successful.

[0374] 1510. The core network device sends a service request 2 to the reader / writer, where the service request 2 carries mask information 2.

[0375] Correspondingly, the reader receives the service request 2.

[0376] 1511. The reader sends paging signaling 2 based on the service request 2. The paging signaling 2 includes mask information 2 and configuration information 2.

[0377] Since the paging signaling 2 does not page UE1, UE2, and UE3, the device states of UE1, UE2, and UE3 change to the third state.

[0378] For example, Figure 16 For example, the first signaling is paging signaling 1, the second signaling is query signaling, and the device state of the first device includes a first state and a second state.

[0379] 1601. The core network device sends a service request 1 to the reader / writer. The service request 1 carries mask information 1. The mask information 1 is used to indicate the selection of UE1, UE2, and UE3 to execute service 1.

[0380] Correspondingly, the reader receives the service request 1.

[0381] 1602. The reader sends paging signaling 1 based on the service request 1. The paging signaling 1 includes mask information 1 and configuration information 1.

[0382] Correspondingly, UE1, UE2 and UE3 receive the paging signaling 1, and the device states of UE1, UE2 and UE3 change from the first state to the second state.

[0383] 1603. After sending the paging signaling 1, the reader sends a query signaling, which also includes configuration information 1.

[0384] 1604. After sending the query signaling, the reader sends a queryrep signaling.

[0385] 1605. UE1 performs RA.

[0386] After receiving the query signaling and queryrep signaling, UE1 successfully performs random access based on the query signaling and queryrep signaling, and UE1's device state changes from the second state to the first state. UE2 has not yet successfully performed random access based on the query signaling and queryrep signaling, so UE2's state remains in the second state. UE3 is powered off in the second state and then powered back on after a period of time. After UE3 is powered back on, configuration information 1 in UE3 is lost.

[0387] 1606. The reader sends a query signaling, which also includes configuration information 1.

[0388] After UE3 is powered on again, it receives the query signaling from the reader. Since the query signaling also includes configuration information 1, UE3 can re-acquire configuration information 1 and communicate with the reader based on configuration information 1.

[0389] 1607. The reader sends a queryrep signaling.

[0390] 1608. UE2 performs RA.

[0391] UE2 performs random access based on queryrep signaling, and changes to the first state after the random access is successful.

[0392] 1609. UE3 performs RA.

[0393] UE3 performs random access based on queryrep signaling, and changes to the first state after the random access is successful.

[0394] 1610. The core network device sends a service request 2 to the reader / writer, where the service request 2 carries mask information 2.

[0395] Correspondingly, the reader receives the service request 2.

[0396] 1611. The reader sends paging signaling 2 based on the service request 2. The paging signaling 2 includes mask information 2 and configuration information 2.

[0397] Since the paging signaling 2 does not page UE1, UE2, and UE3, the device states of UE1, UE2, and UE3 remain unchanged.

[0398] Optionally, for ease of description below, the signaling used to page the first device is referred to as a first message. When the first device's device state includes a first state, a second state, and a third state, after receiving the first message, the first device records its own device state for no longer than a first duration. After the first duration has expired, the first device directly processes the process as if it had not received the first message.

[0399] Optionally, when the device status of the first device only includes the first status and the second status, after the first device receives the first message, the time for recording whether it has been paged shall not exceed the first duration, and the time for recording its own device status shall not exceed the second duration. After exceeding the first duration, the first device is directly treated as a process that has not been paged. After exceeding the second duration, the first device is directly treated as a process that has not been successfully accessed. Accordingly, the second device can know how long it will take for the first device to record whether it has been paged and whether random access has been successful based on the time when the first message was sent. After the second device sends the first message, if the first duration is exceeded, the second device determines that the first device cannot record whether it has been paged; if the second duration is exceeded, the second device determines that the first device cannot record whether random access has been successful.

[0400] How the first device determines the end time of the first duration and the first duration can be found in the above Figure 5 The description of the corresponding embodiment is not repeated here. How the first device stores whether it is paged and / or the device status can be found in Figure 7 The description in the corresponding embodiment is not repeated here.

[0401] In a possible example, the LCID in the first signaling can indicate that the first signaling is a message for the paging device, or the identification information (carried in the MAC or in a message header field (high-layer field)) can indicate that the first signaling is a message for the paging device.

[0402] It can be seen that based on Figure 12 In the described method, the second device can repeatedly send the first configuration information used to configure the communication parameters between the first device and the second device via the second signaling. In this way, the first device can re-acquire the first configuration information after powering on again, and can then communicate normally with the second device based on the first configuration information.

[0403] This application provides a communication device that can be used to implement the above Figure 5 or Figure 7 or Figure 12 The function of the first device or the second device in the method embodiment is described. The communication device can be the first device or the second device. The communication device includes the above Figure 5 or Figure 7 or Figure 12 The module or unit corresponding to the method / operation / step / action performed by the first device or the second device in the method embodiment can be a hardware circuit, software, or a combination of hardware circuit and software. Figure 17 , Figure 17 17 shows a schematic diagram of the structure of a communication device 1700 according to an embodiment of the present application. The communication device 1700 may include an interface unit 1701 and a processing unit 1702. The processing unit 1702 is configured to process signaling and / or data. The signaling and / or data may be data received by the interface unit 1701, and the processed signaling and / or data may also be sent by the interface unit 1701.

[0404] In one embodiment, when the communication device 1700 is a first device, wherein:

[0405] Interface unit 1701 is used to receive a first signaling from a second device, where the first signaling includes first indication information, and the first signaling is used to instruct the first device to access the second device, and the first indication information includes one or more of the following: the device that successfully accesses randomly does not respond to the second signaling, and the device that fails to successfully access randomly after being paged responds to the second signaling; the second signaling is used to trigger a random access opportunity; the interface unit 1701 is also used to receive a second signaling from the second device.

[0406] In a possible example, the processing unit 1702 is configured to not respond to the second signaling if the first device receives the first signaling when random access is successful.

[0407] In a possible example, the processing unit 1702 is configured to respond to the second signaling if the first apparatus receives the first signaling when the first apparatus fails to perform random access successfully after being paged.

[0408] In a possible example, the processing unit 1702 is configured to respond to the second signaling if the first device has not received the signaling for paging the first device before receiving the first signaling.

[0409] In a possible example, the processing unit 1702 is configured to ignore the first indication information if the first device has not received signaling for paging the first device before receiving the first signaling.

[0410] In a possible example, the first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

[0411] In a possible example, the first indication information instructs the device that has successfully performed random access not to respond to the second signaling and instructs the device that has not successfully performed random access after being paged to respond to the second signaling.

[0412] In one embodiment, when the communication device 1700 is a second device, wherein:

[0413] Interface unit 1701 is used to send a first signaling, the first signaling includes a first indication information, the first signaling is used to instruct the first device to access the second device, the first indication information indicates one or more of the following: the device that successfully accesses randomly does not respond to the second signaling, the device that fails to successfully access randomly after being paged responds to the second signaling, and the second signaling is used to trigger a random access opportunity; the interface unit 1701 is also used to send a second signaling.

[0414] In a possible example, the first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

[0415] In a possible example, the first indication information instructs the device that has successfully performed random access not to respond to the second signaling and instructs the device that has not successfully performed random access after being paged to respond to the second signaling.

[0416] In one embodiment, when the communication device 1700 is a first device, wherein:

[0417] Interface unit 1701 is used to receive a first signaling from a second device, the first signaling including first indication information, the first signaling being used to instruct the first device to access the second device, the first indication information indicating one or more of the following: a device that successfully performs random access maintains the current device state, and a device that fails to perform random access after being paged maintains the current device state; interface unit 1701 is also used to receive a second signaling from the second device, the second signaling being used to trigger a random access opportunity.

[0418] In one possible example, the processing unit 1702 is configured to maintain the current device state as the first state if the first device receives the first signaling when random access is successful, where the first state is the state in which the first device is in when random access is successful; in the first state, the second signaling is not responded to.

[0419] In one possible example, the processing unit 1702 is configured to maintain the current device state as a second state if the first device receives a first signaling when the first device fails to perform random access successfully after being paged, the second state being the state in which the first device fails to perform random access successfully after being paged; and respond to the second signaling in the second state.

[0420] In one possible example, the processing unit 1702 is configured to enter a second state if the first device does not receive a signaling for paging the first device before receiving the first signaling, where the second state is the state in which the first device is in when random access is not successful after being paged; and respond to the second signaling in the second state.

[0421] In a possible example, the processing unit 1702 is configured to ignore the first indication information if the first device has not received signaling for paging the first device before receiving the first signaling.

[0422] In a possible example, the first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

[0423] In a possible example, the device state of the first device includes a first state, a second state, and a third state; the first state is the state of the first device when random access is successful, the second state is the state of the first device when random access is not successful after being paged, and the third state is the state of the first device when it does not receive signaling for paging the first device.

[0424] In a possible example, the device state of the first device comprises a first state and a second state; the first state is a state in which the first device is when the random access is successful, and the first state is also a state in which the first device is when the first device does not receive the signaling for paging the first device; the second state is a state in which the first device is after being paged and before the random access is successful.

[0425] In a possible example, the first indication information indicates that a device whose random access is successful maintains a current device state and a device that is paged and whose random access is not successful maintains the current device state.

[0426] In an implementation, the communication device 1700 is the second device, and wherein:

[0427] The interface unit 1701 is configured to send first signaling, the first signaling comprising first indication information, the first signaling being used to instruct the first device to perform random access, and the first indication information indicating one or more of the following: a device whose random access is successful maintains a current device state, and a device that is paged and whose random access is not successful maintains the current device state; and the interface unit 1701 is further configured to send second signaling, the second signaling being used to trigger a random access opportunity.

[0428] In a possible example, the first signaling further comprises first configuration information, and the first configuration information is used to configure parameters of communication between the first device and the second device.

[0429] In a possible example, the first indication information indicates that a device whose random access is successful maintains a current device state and a device that is paged and whose random access is not successful maintains the current device state.

[0430] In an implementation, the communication device 1700 is the first device, and wherein:

[0431] The interface unit 1701 is configured to receive, from the second device, first signaling comprising first configuration information, the first configuration information being used to configure parameters of communication between the first device and the second device, and the first signaling being used to page the first device; and the interface unit 1701 is further configured to receive, from the second device, second signaling comprising the first configuration information, the second signaling being used to trigger a random access opportunity.

[0432] In a possible example, the device state of the first device comprises a first state, a second state, and a third state; the first state is a state in which the first device is when the random access is successful, the second state is a state in which the first device is after being paged and before the random access is successful, and the third state is a state in which the first device is when the first device does not receive the signaling for paging the first device.

[0433] In a possible example, the device state of the first device includes a first state and a second state; the first state is a state in which the first device is in when the random access of the first device is successful, and the first state is also a state in which the first device is in when the first device does not receive the signaling for paging the first device; and the second state is a state in which the first device is in after being paged but before the random access is successful.

[0434] In an implementation, the communication device 1700 is the second device, and wherein:

[0435] The interface unit 1701 is configured to send the first signaling, the first signaling including the first configuration information, the first configuration information being used to configure a parameter of communication between the first device and the second device, and the first signaling being used to page the first device; and the interface unit 1701 is further configured to send the second signaling, the second signaling including the first configuration information, and the second signaling being used to trigger the random access opportunity.

[0436] As Figure 18 shown in FIG. 18, a communication device 1800 is provided, which is configured to implement the functions of the first device or the second device. The device can be a communication device or a device used in a communication device. The communication device can be the first device or the second device. The device used in the communication device can be a chip system or a chip in the communication device. The chip system can be composed of a chip, or can include the chip and other discrete devices.

[0437] The communication device 1800 includes at least one processor 1810, which is configured to implement the processing functions of the device (for example, the second device or the first device) in the method provided in the embodiments of the present application.

[0438] Optionally, the communication device 1800 can further include a communication interface 1820, which is configured to implement the transceiving operation of the device (for example, the second device or the first device) in the method provided in the embodiments of the present application. In the embodiments of the present application, the communication interface can be a transceiver, a circuit, a bus, a module or other types of communication interfaces, which are configured to communicate with other devices through a transmission medium. For example, the communication interface 1820 is configured to enable the device in the communication device 1800 to communicate with other devices. The processor 1810 transceives data by using the communication interface 1820, and is configured to implement the method described in the method embodiments. As Figure 18 shown in FIG. 18, the communication interface 1820 can be located in the communication device 1800, or located outside the communication device 1800, which is not limited in the embodiments of the present application.

[0439] Optionally, the communication apparatus 1800 can further include at least one memory 1830 for storing program instructions and / or data. The memory 1830 is coupled to the processor 1810. The coupling between the memory 1830 and the processor 1810 in the embodiments of the present application is indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, for information interaction between devices, units or modules. The processor 1810 can operate in cooperation with the memory 1830. The processor 1810 can execute program instructions stored in the memory 1830. At least one of the at least one memory can be included in the processor 1810. Alternatively, the at least one memory can be located within the communication apparatus 1800 and outside the processor 1810. Alternatively, the at least one memory can be located outside the communication apparatus 1800, which is not limited in the embodiments of the present application.

[0440] The specific connection medium between the communication interface 1820, the processor 1810 and the memory 1830 in the embodiments of the present application is not limited. In the embodiments of the present application, the memory 1830, the processor 1810 and the communication interface 1820 are connected through a bus, and the bus is represented by a thick line in the embodiments of the present application. The connection mode between other components is only schematically illustrated and is not limited. Figure 18 Figure 18 The bus can be divided into an address bus, a data bus, a control bus, etc. For convenience of representation, only one thick line is used to represent the bus in the embodiments of the present application, but it does not mean that there is only one bus or only one type of bus. Figure 18

[0441] When the communication apparatus 1800 is specifically a device (for example, the second device or the first device) such as a chip or a chip system, the communication interface 1820 can output or receive a baseband signal. When the communication apparatus 1800 is specifically a device (for example, the second device or the first device), the communication interface 1820 can output or receive a radio frequency signal. In the embodiments of the present application, the processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as execution completed by a hardware processor or executed by a combination of hardware and software modules in the processor.

[0442] It should be noted that the communication interface 1820 can be used to execute the functions of the interface unit 1701, and the processor 1810 can be used to execute the functions of the processing unit 1702, which will not be described herein. ​​

[0443] When the communication device is a chip applied to the first device, the first device chip implements the functions of the first device in the method embodiments, and the first device chip receives information from other network elements; or the first device chip sends information to other network elements.

[0444] When the communication device is a chip applied to the second device, the second device chip implements the functions of the second device in the method embodiments. The second device chip receives information from other network elements; or the second device chip sends information to other network elements.

[0445] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor or any conventional processor.

[0446] The method steps in the embodiments of the present application can be implemented in the form of hardware or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a random access memory (RAM), a flash memory, a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM), a register, a hard disk, a mobile hard disk, a CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in the second device or the first device. Of course, the processor and the storage medium can also exist as discrete components in the first device or the second device.

[0447] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments are performed. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer programs or instructions can be stored in a computer readable storage medium or transmitted by the computer readable storage medium. The computer readable storage medium can be any available medium accessible by the computer or a data storage device such as a server integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a CD-ROM; a semiconductor medium, such as a solid state disk (SSD).

[0448] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0449] It can be understood that various numbers involved in the embodiments of the present application are only for convenient differentiation, and do not limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and inherent logic.

[0450] The embodiments of the present application also provide a computer readable storage medium, which stores computer execution instructions. When the computer execution instructions are executed, the method executed by the first device or the second device in the above method embodiment is realized.

[0451] The embodiments of the present application also provide a computer program product, which includes a computer program. When the computer program is executed, the method executed by the first device or the second device in the above method embodiment is realized.

[0452] The embodiments of the present application also provide a communication system, which includes the first device or the second device. The first device is used to execute the method executed by the first device in the above method embodiment. The second device is used to execute the method executed by the second device in the above method embodiment.

[0453] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all described as a series of action combinations, but those skilled in the art should know that the present application is not limited to the action sequence described, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0454] The descriptions of the various embodiments provided by the present application can be mutually referred to, and the descriptions of the various embodiments each have a focus. The parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. For the convenience and brevity of description, for example, the functions of the various devices and equipment provided by the embodiments of the present application and the steps performed can refer to the relevant description of the method embodiments of the present application, and the various method embodiments can also be mutually referred to, combined or cited.

[0455] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An information transmission method, characterized in that: The method comprises: A first device receives first signaling from a second device, the first signaling including first indication information, the first signaling being used to instruct the first device to access the second device, the first indication information indicating one or more of the following: a device that successfully accessed the second device does not respond to the second signaling, a device that did not successfully access the second device after being paged responds to the second signaling; and the second signaling is used to trigger a random access opportunity. The first device receives the second signaling from the second device.

2. The method according to claim 1, characterized in that The method further comprises: If the first device receives the first signaling when random access is successful, the first device does not respond to the second signaling.

3. The method according to claim 1, characterized in that The method further comprises: If the first device receives the first signaling without successful random access after being paged, the first device responds to the second signaling.

4. The method according to claim 1, wherein The method further comprises: If the first device has not received signaling for paging the first device before receiving the first signaling, the first device responds to the second signaling.

5. The method according to claim 4, characterized in that The method further comprises: If the first device does not receive signaling for paging the first device before receiving the first signaling, the first device ignores the first indication information.

6. The method according to any one of claims 1 to 5, characterized in that The first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

7. The method according to any one of claims 1 to 6, characterized in that The first indication information instructs a device that has successfully performed random access not to respond to the second signaling and instructs a device that has not successfully performed random access after being paged to respond to the second signaling.

8. An information transmission method, characterized in that: The method comprises: The second device sends a first signaling, the first signaling including first indication information, the first signaling being used to instruct the first device to access the second device, the first indication information indicating one or more of the following: a device that successfully accesses the second signaling does not respond to the second signaling, a device that fails to successfully access the second signaling after being paged responds to the second signaling; and the second signaling is used to trigger a random access opportunity. The second device sends the second signaling.

9. The method according to claim 8, characterized in that The first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

10. The method according to claim 8 or 9, characterized in that The first indication information instructs a device that has successfully performed random access not to respond to the second signaling and instructs a device that has not successfully performed random access after being paged to respond to the second signaling.

11. An information transmission method, characterized in that: The method comprises: A first device receives first signaling from a second device, the first signaling including first indication information, the first signaling being used to instruct the first device to access the second device, the first indication information indicating one or more of the following: a device that successfully performs random access maintains a current device state, and a device that fails to perform random access after being paged maintains a current device state. The first device receives second signaling from the second device, where the second signaling is used to trigger a random access opportunity.

12. The method according to claim 11, characterized in that The method further comprises: If the first device receives the first signaling when random access is successful, the first device maintains the current device state as the first state, where the first state is the state of the first device when random access is successful; the first device does not respond to the second signaling in the first state.

13. The method according to claim 11, characterized in that The method further comprises: If the first device receives the first signaling when random access is not successful after being paged, the first device maintains the current device state as the second state, where the second state is the state in which the first device is when random access is not successful after being paged; the first device responds to the second signaling in the second state.

14. The method according to claim 11, characterized in that The method further comprises: If the first device does not receive the signaling for paging the first device before receiving the first signaling, the first device enters a second state, where the second state is the state in which the first device is in when random access is not successful after being paged; the first device responds to the second signaling in the second state.

15. The method according to claim 14, characterized in that The method further comprises: If the first device does not receive signaling for paging the first device before receiving the first signaling, the first device ignores the first indication information.

16. The method according to any one of claims 11 to 15, characterized in that The first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

17. The method according to any one of claims 11 to 16, characterized in that The device state of the first device includes a first state, a second state and a third state; the first state is the state of the first device when random access is successful, the second state is the state of the first device when random access is not successful after being paged, and the third state is the state of the first device when it does not receive signaling for paging the first device.

18. The method according to any one of claims 11 to 16, characterized in that: The device state of the first device includes a first state and a second state; the first state is the state of the first device when random access is successful, and the first state is also the state of the first device when it does not receive signaling for paging the first device; the second state is the state of the first device when random access is not successful after being paged.

19. The method according to any one of claims 11 to 18, characterized in that The first indication information instructs a device that has successfully random accessed to maintain a current device state and a device that has not successfully random accessed to maintain a current device state after being paged.

20. An information transmission method, characterized in that: The method comprises: The second device sends a first signaling, the first signaling including first indication information, the first signaling being used to instruct the first device to perform random access, the first indication information indicating one or more of the following: a device that successfully performs random access maintains a current device state, and a device that fails to perform random access after being paged maintains a current device state. The second device sends a second signaling, where the second signaling is used to trigger a random access opportunity.

21. The method according to claim 20, characterized in that The first signaling further includes first configuration information, where the first configuration information is used to configure parameters for communication between the first device and the second device.

22. The method according to claim 20 or 21, characterized in that The first indication information instructs a device that has successfully random accessed to maintain a current device state and a device that has not successfully random accessed to maintain a current device state after being paged.

23. A communication device, characterized in that: The method comprises means for performing the method according to any one of claims 1 to 22.

24. A communication device, characterized in that: The method comprises a processor and a memory, wherein the processor and the memory are coupled, and the processor is configured to implement the method according to any one of claims 1 to 22.

25. A chip, characterized in that: The method comprises a processor and an interface, wherein the processor and the interface are coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions so that the method according to any one of claims 1 to 22 is executed.

26. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are called by the computer, the computer executes the method according to any one of claims 1 to 22.

27. A communication system, characterized in that: The communication system includes a first device and a second device; the first device is used to execute the method according to any one of claims 1 to 7, and the second device is used to execute the method according to any one of claims 8 to 10; or, the first device is used to execute the method according to any one of claims 11 to 19, and the second device is used to execute the method according to any one of claims 20 to 22.

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