Communication method and apparatus

Abstract

Disclosed in the embodiments of the present application are a communication method and apparatus. The method comprises: a first device receiving first indication information sent by a second device by means of first signaling or signaling before the first signaling, wherein the first indication information is used for indicating a target power control parameter; and the first device performing power control on the basis of the target power control parameter. By using the embodiments of the present application, the optimal access of an IoT device is realized, the energy-saving effect is improved, and it is ensured that a receiving end can correctly detect data.

Description

A communication method and apparatus

[0001] The present application claims priority to the Chinese patent application No. 202410539082.0, filed on April 30, 2024, with the State Intellectual Property Office of China, and the Chinese patent application No. 202410539082.0 has the title of "A communication method and apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of communication, and in particular to a communication method and apparatus. BACKGROUND

[0003] The signal transmitted by an internet of things (IoT) device needs to be detected by a reader. Given that the power of the IoT device is limited, especially for the IoT device without independent signal generation function, a node that can provide a carrier wave (CW) or carry the CW is needed to provide a carrier for the IoT device to transmit the signal. The node can be referred to as an activator. The activator that transmits the CW can be located in or not located in the topology of the IoT device, and can be integrated with the reader or not integrated with the reader. When not integrated with the reader, it can not be the same node.

[0004] In an IoT system, there is no radio resource control (RRC) connection. That is, the capability-limited IoT device has no RRC connection, cannot obtain power control parameters according to existing RRC signaling configuration, and cannot perceive the accessed topology, and cannot perform effective power control. SUMMARY

[0005] Embodiments of the present application provide a communication method and apparatus, which realize optimal access of the IoT device, improve energy saving effect, and ensure that the reader can correctly detect data.

[0006] In a first aspect, embodiments of the present application provide a communication method, which is applied to a first device (for example, an IoT device) or a chip or circuit configured in the first device, and includes the following steps.

[0007] Receiving first indication information sent by a second device through first signaling or signaling before the first signaling, the first indication information being used to indicate a target power control parameter; and performing power control based on the target power control parameter.

[0008] In the case that the first device is power-limited and has no RRC connection, the target power control parameter is indicated by the first signaling or the signaling before the first signaling, so that the first device can perform power control according to the target power control parameter, and optimal access of the first device is achieved, which not only improves the energy saving effect, but also ensures that the second device can correctly detect data.

[0009] In a possible design, the first signaling is groupcast signaling, and the groupcast signaling includes select signaling or query signaling. The target power control parameter is indicated by the groupcast signaling, so that the first device can perform power control according to the target power control parameter, and optimal access of the first device is achieved, which not only improves the energy saving effect, but also ensures that the second device can correctly detect data.

[0010] In a possible design, the first signaling is select signaling, and the first signaling is used to select a group of devices to perform feedback.

[0011] In a possible design, the first signaling is query signaling, and the first signaling is used to query a group of devices.

[0012] In a possible design, the first signaling is used to indicate a boundary of a time unit.

[0013] The group of devices includes the first device. The time unit includes at least one of a slot, a symbol, or a subframe. For example, the query signaling can be used to indicate a slot boundary or a start of a slot to the first device.

[0014] In a possible design, the first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling. The target power control parameter is indicated by the unicast signaling, so that the first device can perform power control according to the target power control parameter, and optimal access of the first device is achieved, which not only improves the energy saving effect, but also ensures that the second device can correctly detect data.

[0015] In a possible design, the first signaling is acknowledgement (ack) signaling, and the first signaling is used to feed back acknowledgement information to the first device.

[0016] In a possible design, the first signaling is access signaling, and the first signaling is used to indicate that the first device performs a read operation or a write operation.

[0017] In a possible design, the first indication information includes a target power control parameter. The target power control parameter is added in the first signaling. Since different second devices have different receiving sensitivities, the first device can obtain different detection threshold values of the different second devices, and determine whether the second device is a base station or a UE based on the target power control parameter indicated by the first indication information and the different detection threshold values. That is, the first indication information implicitly indicates the topology.

[0018] In a possible design, the first indication information includes a first index, which is used to indicate the target power control parameter in a preset plurality of groups of power control parameters. The first device can obtain different topologies based on the first index and the preset plurality of groups of power control parameters, and determine the target power control parameter of the second device, so as to apply the target power control parameter in different topologies.

[0019] In a possible design, the device type of the first device is sent to the second device, and the device type is determined according to at least one of the energy storage capability and the signal generation function of the first device. When the second device determines that the device type reported by the first device is a device with energy storage capability and without signal generation function, or a device with energy storage capability and with signal generation function, the first indication information is added in the first signaling, and the first indication information is sent to the first device through the first signaling, so as to reduce unnecessary signaling transmission.

[0020] In a possible design, the first indication information is further used to indicate the device type. The first device can obtain the device type to which the target power control parameter is directed, so as to avoid that a first device of another device type performs power control based on the target power control parameter, and guarantee access success of the first device.

[0021] In a possible design, it is determined whether the first device is a target device type, and the target device type includes a device with energy storage capability and without signal generation function, or a device with energy storage capability and with signal generation function. When it is determined that the first device is the target device type, power control is performed based on the target power control parameter. This avoids that a first device without energy storage capability and without signal generation function performs power control based on the target power control parameter, and guarantees access success of the first device.

[0022] In a possible design, a first preamble corresponding to the first signaling or the signaling before the first signaling is measured to determine a first signal strength of the first preamble; the first signal strength is used to determine a link loss between the first device and the second device; and power control is performed based on the link loss and the target power control parameter. The power control is performed based on the link loss and the target power control parameter indicated by the first signaling or the signaling before the first signaling, thereby ensuring accuracy of the power control.

[0023] In a possible design, the first device has no radio resource control (RRC) connection.

[0024] In a possible design, the target power control parameter includes at least one of the following: a target power value, or a loss compensation factor.

[0025] In a second aspect, an embodiment of the present application provides a communication method, which is applied to a second device (for example, a reader), or a chip or circuit configured in the second device, and includes the following steps.

[0026] First indication information is sent to the first device through the first signaling or the signaling before the first signaling, where the first indication information is used to indicate a target power control parameter, and the target power control parameter is used for power control.

[0027] In the case that the first device has limited capability and has no RRC connection, the target power control parameter is indicated through the first signaling or the signaling before the first signaling, so that the first device can perform power control according to the target power control parameter, optimal access of the first device is achieved, energy saving effect is improved, and the second device can correctly detect data.

[0028] In a possible design, the first signaling is groupcast signaling, and the groupcast signaling includes select signaling or query signaling. The target power control parameter is indicated through the groupcast signaling, so that the first device can perform power control according to the target power control parameter, optimal access of the first device is achieved, energy saving effect is improved, and the second device can correctly detect data.

[0029] In a possible design, the first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling. The target power control parameter is indicated through the unicast signaling, so that the first device can perform power control according to the target power control parameter, optimal access of the first device is achieved, energy saving effect is improved, and the second device can correctly detect data.

[0030] In a possible design, the first indication information includes a target power control parameter. The target power control parameter is added in the first signaling. Since different second devices have different receiving sensitivities, the first device can obtain different detection threshold values of the different second devices, and determine, based on the target power control parameter indicated by the first indication information and the different detection threshold values, whether the second device is a base station or a UE. That is, the first indication information implicitly indicates the topology.

[0031] In a possible design, the first indication information includes a first index, and the first index is used to indicate the target power control parameter in a preset plurality of groups of power control parameters. The first device can obtain different topologies based on the first index and the preset plurality of groups of power control parameters, and determine the target power control parameter of the second device, so as to apply the target power control parameter in different topologies.

[0032] In a possible design, the first device determines whether there is a target device type, and the target device type includes a device with energy storage capability and without signal generation function, or a device with energy storage capability and with signal generation function; and the first device sends the first indication information to the first device through the first signaling or signaling before the first signaling when it is determined that there is the target device type. The indication of the target power control parameter is added in the first signaling or the signaling before the first signaling only when it is determined that there is the target device type, so as to avoid unnecessary information transmission and reduce signaling overhead.

[0033] In a possible design, the second device receives the device type of the first device sent by the first device, and the device type is determined according to at least one of energy storage capability and signal generation function of the first device. The second device adds the first indication information in the first signaling when it is determined that the device type reported by the first device is a device with energy storage capability and without signal generation function, or a device with energy storage capability and with signal generation function, and sends the first indication information to the first device through the first signaling, so as to reduce unnecessary signaling transmission.

[0034] In a possible design, the first indication information is further used to indicate the device type. The first device can obtain the device type to which the target power control parameter is directed, so as to avoid that a first device of another device type performs power control based on the target power control parameter, and guarantee access success of the first device.

[0035] In one possible design, a second preamble carrying first information from the first device is received, a second signal strength of the second preamble is determined, and the target power control parameter is determined based on the second signal strength. The target power control parameter is determined based on not only different topologies, but also the signal strength of the first device. That is, not only the sensitivity of the second device, but also the distance between the second device and the first device is considered. This avoids interference of the second device caused by too strong signals of the first device.

[0036] The second preamble of the first information can be understood as a second preamble carried before the first information or a second preamble corresponding to the first information.

[0037] In one possible design, the first information includes a 16-bit random number RN16 or an electronic product code EPC.

[0038] In one possible design, the first device has no radio resource control (RRC) connection.

[0039] In one possible design, the target power control parameter includes at least one of the following: a target power value or a loss compensation factor.

[0040] In a third aspect, an embodiment of the present application provides a communication apparatus, including:

[0041] A receiving module, configured to receive first indication information sent by a second device through first signaling or signaling before the first signaling, the first indication information being used to indicate a target power control parameter.

[0042] A processing module, configured to perform power control based on the target power control parameter.

[0043] In one possible design, the first signaling is groupcast signaling, and the groupcast signaling includes select signaling or query signaling.

[0044] In one possible design, the first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling.

[0045] In one possible design, the first indication information includes the target power control parameter.

[0046] In one possible design, the first indication information includes a first index, and the first index is used to indicate the target power control parameter in a preset plurality of groups of power control parameters.

[0047] In a possible design, the sending module is configured to send, to the second device, a device type of the first device, where the device type is determined according to at least one of an energy storage capability and a signal generation function of the first device.

[0048] In a possible design, the first indication information is further used to indicate the device type.

[0049] In a possible design, the processing module is configured to determine whether the first device is a target device type, where the target device type includes a device with an energy storage capability and without a signal generation function, or a device with an energy storage capability and with a signal generation function; and perform power control based on the target power control parameter when it is determined that the first device is the target device type.

[0050] In a possible design, the processing module is configured to measure a first preamble corresponding to the first signaling or signaling before the first signaling, to determine a first signal strength of the first preamble; determine a link loss between the first device and the second device according to the first signal strength; and perform power control based on the link loss and the target power control parameter.

[0051] In a possible design, the first device has no radio resource control (RRC) connection.

[0052] In a possible design, the target power control parameter includes at least one of a target power value or a loss compensation factor.

[0053] The operations and advantages of the communication apparatus can refer to those of the method in the first aspect and those described above, and details are not described herein again.

[0054] In a fourth aspect, an embodiment of the present application provides a communication apparatus, including:

[0055] The sending module is configured to send, to a first device, first indication information through first signaling or signaling before the first signaling, where the first indication information is used to indicate a target power control parameter, and the target power control parameter is used for power control.

[0056] In a possible design, the first signaling is groupcast signaling, and the groupcast signaling includes select signaling or query signaling.

[0057] In a possible design, the first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling.

[0058] In a possible design, the first indication information includes the target power control parameter.

[0059] In a possible design, the first indication information includes a first index, where the first index is used to indicate the target power control parameter in the preset plurality of groups of power control parameters.

[0060] In a possible design, the processing module is configured to determine whether there is a first device of a target device type, where the target device type includes a device with energy storage capability and without signal generation function, or a device with energy storage capability and with signal generation function; and when it is determined that there is the first device of the target device type, send the first indication information to the first device through the first signaling or signaling before the first signaling.

[0061] In a possible design, the receiving module is configured to receive a device type of the first device sent by the first device, where the device type is determined according to at least one of energy storage capability and signal generation function of the first device.

[0062] In a possible design, the first indication information is further used to indicate the device type.

[0063] In a possible design, the processing module is configured to receive a second preamble of first information from the first device, determine a second signal strength of the second preamble, and determine the target power control parameter according to the second signal strength.

[0064] In a possible design, the first information includes a 16-bit random number RN16 or an electronic product code EPC.

[0065] In a possible design, the first device does not have a radio resource control (RRC) connection.

[0066] In a possible design, the target power control parameter includes at least one of a target power value or a loss compensation factor.

[0067] The operations and beneficial effects of the communication apparatus can refer to the method and beneficial effects of the second aspect, and details are not repeated.

[0068] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which includes a memory and one or more processors. The memory is configured to store part or all of necessary computer programs or instructions for implementing functions related to the first aspect. The one or more processors are configured to execute the computer programs or instructions, so that the communication apparatus implements the method in any possible design or implementation manner of the first aspect.

[0069] In a possible design, the communication apparatus further includes an interface circuit, and the processor is configured to communicate with other apparatuses or components through the interface circuit.

[0070] In a possible design, the communication apparatus further includes the memory.

[0071] In a sixth aspect, an embodiment of the present application provides a communication apparatus, which includes a memory and one or more processors. The memory is configured to store part or all of necessary computer programs or instructions for implementing the functions related to the second aspect. The one or more processors are configured to execute the computer programs or instructions, and when the computer programs or instructions are executed, the communication apparatus is configured to implement the method in any possible design or implementation manner of the second aspect.

[0072] In a possible design, the communication apparatus further includes an interface circuit, and the processor is configured to communicate with other apparatuses or components through the interface circuit.

[0073] In a possible design, the communication apparatus further includes the memory.

[0074] In a seventh aspect, the present application provides a computer readable storage medium, which is configured to store a computer program. When the computer program is executed, the method in any one of the first aspect and the second aspect is implemented.

[0075] In an eighth aspect, the present application provides a computer program product including a computer program. When the computer program is executed, the method in any one of the first aspect and the second aspect is implemented.

[0076] In a ninth aspect, an embodiment of the present application provides a communication system, which includes at least one first device and at least one second device. The first device is configured to execute the steps in the first aspect, and the second device is configured to execute the steps in the second aspect.

[0077] In a tenth aspect, a chip is provided, which includes a processor and a communication interface configured to communicate with external devices or internal devices, and the processor is configured to implement the method in the various aspects.

[0078] In a possible design, the chip further includes a memory, and the memory is configured to store computer programs or instructions. The processor is configured to execute the computer programs or instructions stored in the memory, or other programs or instructions. When the computer programs or instructions are executed, the processor is configured to implement the method in the various aspects.

[0079] In a possible design, the chip can be integrated on the first device or the second device. BRIEF DESCRIPTION OF DRAWINGS

[0080] FIG. 1 is a schematic diagram of a topology of an IoT device;

[0081] FIG. 2 is a schematic diagram of signaling interaction between an IoT device and a reader;

[0082] FIG. 3 is a schematic diagram of a signaling structure;

[0083] FIG. 4 is a schematic diagram of an architecture of an applicable scenario according to an embodiment of the present application;

[0084] FIG. 5 is a schematic diagram of a communication method according to an embodiment of the present application;

[0085] FIG. 6 is a schematic diagram of another signaling structure;

[0086] FIG. 7 is a schematic diagram of a structure of a communication apparatus according to an embodiment of the present application;

[0087] FIG. 8 is a schematic diagram of a structure of another communication apparatus according to an embodiment of the present application;

[0088] FIG. 9 is a schematic diagram of a structure of a first device according to an embodiment of the present application;

[0089] FIG. 10 is a schematic diagram of a structure of a second device according to an embodiment of the present application. DETAILED DESCRIPTION

[0090] Ambient IoT devices (referred to as IoT devices) can be classified into the following categories:

[0091] 1. Device A: capable or incapable of energy storage, i.e., without independent signal generation / amplification function when performing backscattering transmission. Device A is also referred to as a passive IoT device.

[0092] 2. Device B: capable of energy storage, i.e., without independent signal generation function when performing backscattering transmission, but the stored energy can amplify the reflected signal. Device B is also referred to as a semi-passive IoT device.

[0093] 3、device C: capable of energy storage, with independent signal generation function, i.e. active RF for data transmission. device C is also called active IoT device.

[0094] IoT devices are power limited, especially those without independent signal generation function, need a node to provide carrier wave (CW) for the IoT device to carry its to-be-transmitted signal, which can be called activator. This activator transmitting CW can be in or out of the topology of IoT device, can be integrated with reader or not. When not integrated with reader, can not be the same node.

[0095] As shown in FIG. 1, which is a schematic diagram of topology structure of IoT device. Topology 1: network device communicates with IoT device directly. Topology 2: network device communicates with IoT device through intermediate node. Topology 3: network device communicates with IoT device through assisting node for uplink and downlink transmission respectively. Topology 4: terminal device communicates with IoT device. In the above topology structure, distinguish as: activator and reader co-site (topology 1, topology 2, topology 4); activator and reader non-co-site (topology 3). When not in the topology structure, activator can be very close to IoT device, or a network node or terminal device with certain distance from IoT device. The link in each topology structure is bidirectional or unidirectional. Network device, terminal device, assisting node or intermediate node can not be only one, i.e. can be multiple. Intermediate node can be terminal device.

[0096] As shown in FIG. 2, FIG. 2 is a schematic diagram of signaling interaction between an IoT device and a reader. Among them, the select signaling and the query signaling are sent by the reader to multiple devices, which can be understood as groupcast signaling. The ack signaling and the access signaling are sent by the reader to a single device, which can be understood as unicast signaling. The reader can send the select signaling, the query signaling, the ack signaling, or the access signaling to the IoT device multiple times in a loop. The IoT device can feed back a 16-bit random number (RN16) or an electronic product code (EPC) to the reader respectively.

[0097] As shown in FIG. 3, FIG. 3 is a schematic diagram of a signaling structure. The select signaling, the query signaling, the ack signaling, or the access signaling sent by the reader to the IoT device can include a delimiter, a calibration symbol, and a downlink command (DL command). Or include a delimiter, a calibration symbol, a downlink command, a calibration symbol, and a downlink command. Or include a delimiter, a calibration symbol, a downlink command, a calibration symbol, a downlink command, and a calibration symbol.

[0098] As shown in FIG. 4, FIG. 4 is a schematic diagram of an applicable scenario architecture provided by the embodiments of the present application. Under the topology of the scenario, the communication system can include a network device and an IoT device (corresponding to topology 1), or include a network device, an intermediate node, or an IoT device (corresponding to topology 2).

[0099] The technical solutions in the embodiments of the present application can be applied to various communication systems, such as a universal mobile telecommunications system (UMTS), a wireless local area network (WLAN), a wireless fidelity (Wi-Fi) system, a 4th generation (4G) mobile communication system such as a long term evolution (LTE) system, a 5th generation (5G) mobile communication system such as a new radio (NR) system, and a future evolved communication system such as a 6th generation (6G) mobile communication system.

[0100] The network device can be a device or module with corresponding communication functions located at the network side of the above communication system. The network device is usually provided with a communication module, circuit or chip for performing corresponding communication functions. The network device is also configured with program instructions for performing corresponding communication functions and corresponding program instructions. The network device refers to a RAN node (or device) that accesses a terminal device to a wireless network, which can also be referred to as a base station. At present, some examples of RAN nodes are: a continued evolution of a node B (gNB), a macro base station, a micro base station, a high-frequency base station, a transmission reception point (TRP), an evolved node B (eNB), a radio network controller (RNC), a node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a Home eNodeB or a Home NodeB, HNB), a baseband unit (BBU), or a wireless fidelity (Wi-Fi) access point (AP) and the like.

[0101] The intermediate node can be a terminal device, a relay, an integrated access backhaul (IAB) node, or a repeater. The terminal device can be a device or module with corresponding communication functions for accessing the communication system. The terminal device is usually provided with a communication module, circuit or chip for performing corresponding communication functions. The terminal device is also provided with program instructions for performing corresponding communication functions. The terminal device, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., refers to a device that provides voice and / or data connectivity to users. For example, handheld devices with wireless connection functions, vehicle-mounted devices, etc. Currently, some examples of terminals are: mobile phones, tablet computers, notebook computers, palm computers, mobile Internet devices, wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, and wireless terminals in industrial control, unmanned driving, remote surgery, smart power grids, transportation safety, smart cities, smart homes, etc.

[0102] The first device in the embodiments of the present application can be an IoT device, and the second device can be a reader, which can be a base station or an intermediate device (such as a UE). The IoT device can be an Internet of Things device, which can be divided into device A, device B, or device C, etc. as described above. The following describes the first device as an IoT device and the second device as a reader.

[0103] Since the IoT device has limited capabilities, the topology is transparent to the IoT device, that is, the IoT device cannot determine whether the communication is with a network device or a terminal device. Moreover, in the above two topologies, the sensitivity of the reader is different. The existing power control mechanism configures the corresponding target parameters through dedicated signaling of the terminal device. In the IoT system, the IoT device has no RRC connection and cannot obtain the corresponding power control parameters according to the existing RRC signaling configuration.

[0104] To solve the above technical problems, the embodiments of the present application provide the following solutions.

[0105] As shown in FIG. 5, FIG. 5 is a flowchart of a communication method provided by the embodiments of the present application. The method mainly includes the following steps:

[0106] S501, the reader sends first indication information to the IoT device through the first signaling or the signaling before the first signaling, the first indication information being used to indicate a target power control parameter.

[0107] The IoT device is a capability-limited device without RRC connection. The reader can be a base station or a UE.

[0108] The target power control parameter includes at least one of the following: a target power value or a loss-of-path compensation factor.

[0109] In an implementation, the first signaling can be a groupcast signaling, which includes a select signaling or a query signaling. The first signaling can also be replaced by any one or more of the following: the first signaling is a select signaling, which is used to select a group of devices for feedback. Alternatively, the first signaling is a query signaling, which is used to query a group of devices. Alternatively, the first signaling is used to indicate the boundary of a time unit. The group of devices includes the IoT device. The time unit includes at least one of a slot, a symbol or a subframe. For example, the Query signaling can be used to indicate the slot boundary or the start of the slot to the IoT device.

[0110] Specifically, in the case where the first signaling is a select signaling or a query signaling, the first indication information can be sent in the following ways.

[0111] In a first implementation, the target power control parameter can be added in the first signaling. That is, the reader sends the first indication information through the first signaling, and the first indication information includes the target power control parameter. Since the receiving sensitivity of different readers is different, the IoT device can obtain different detection threshold values of different readers, and determine whether the reader is a base station or a UE through the different detection threshold values contained in the target power control parameter indicated by the first indication information. That is, the first indication information implicitly indicates the topology.

[0112] For example, if the IoT device obtains the target power control parameter less than or equal to a first threshold, it can be determined that the reader is a base station and topology 1 is adopted. If the IoT device obtains the target power control parameter greater than the first threshold, it can be determined that the reader is a UE and topology 2 is adopted. For another example, if the IoT device obtains the target power control parameter less than the first threshold, it can be determined that the reader is a base station and topology 1 is adopted. If the IoT device obtains the target power control parameter greater than or equal to the first threshold, it can be determined that the reader is a UE and topology 2 is adopted. For another example, if the IoT device obtains the target power control parameter less than the first threshold, it can be determined that the reader is a base station and topology 1 is adopted. If the IoT device obtains the target power control parameter greater than or equal to the first threshold and less than a second threshold, it can be determined that the reader is a UE and topology 2 is adopted. The first threshold is less than the second threshold.

[0113] In a second implementation, the reader sends an additional signaling before sending the first signaling, and the first indication information is sent through the additional signaling. The first indication information includes the target power control parameter. In the case that the reader and the IoT device interact multiple times in a cycle, multiple first signalings can share the target power control parameter indicated by the additional signaling, avoiding the notification through the first signaling each time, thereby reducing the number of repeated information and reducing the signaling overhead.

[0114] In a third implementation, a plurality of groups of power control parameters can be agreed in advance between the reader and the IoT device, and one group of power control parameters corresponds to one index. The reader sends the first indication information through the first signaling, and the first indication information includes a first index. The first index is used to indicate the target power control parameter in the preset plurality of groups of power control parameters. The IoT device can obtain different topologies through the first index and the preset plurality of groups of power control parameters, determine the target power control parameter of the reader, and thereby apply the target power control parameter under different topologies. For example, the first group of power control parameters corresponding to index 1 can be set for topology 1, and the second group of power control parameters corresponding to index 2 can be set for topology 2. If the first indication information indicates the first index 1, topology 1 and the first group of power control parameters are adopted. If the first indication information indicates the first index 2, topology 2 and the second group of power control parameters are adopted.

[0115] In this application, pre-set or pre-agreement can be understood as pre-defined or pre-configured. These several expressions can be interchangeable. It can be pre-configured on the IoT device or UE; or sent to the IoT device or UE through signaling. For example, in the topo 1, the base station configures the IoT device by sending signaling to the IoT device, which can be the first signaling or the signaling before the first signaling. For another example, in the topo 2, the base station configures the UE by sending signaling to the UE, and configures the IoT device by sending signaling to the IoT device through the UE.

[0116] In this application, topo 1 is the abbreviation of topology 1, and topo 2 is the abbreviation of topology 2.

[0117] Optionally, before sending the first indication information to the IoT device through the first signaling or the signaling before the first signaling, the reader can determine whether there is an IoT device of the target device type, which includes a device with energy storage capability and without signal generation function (device B), or a device with energy storage capability and with signal generation function (device C). When it is determined that there is an IoT device of the target device type, the first indication information can be added in the first signaling or the signaling before the first signaling, and the first indication information is sent to the IoT device through the first signaling, and the first indication information is used to indicate the target power control parameter. Only in the case of determining that there is an IoT device of the target device type, the indication of the target power control parameter is added in the first signaling, avoiding unnecessary information transmission and reducing signaling overhead.

[0118] For example, in the topo 2, the UE determines whether there is an IoT device of the target device type, which can be through the signaling before the first signaling to send information triggering device B or device C to feedback. Correspondingly, device B or device C feedbacks. When receiving the feedback information from device B or device C, it is determined that there is an IoT device of the target device type, and the reader (such as UE) can add the first indication information in the first signaling.

[0119] For example, the reader can send a trigger signaling before sending the first signaling. After the IoT device receives the trigger signaling, the IoT device sends the device type of the IoT device to the reader, the device type is determined according to at least one of the energy storage capability and the signal generation function of the IoT device (for example, device A, device B or device C). For example, the index of the feedback device type. When the index of the device type received by the reader corresponds to the indication of device B or device C, it is determined that there is an IoT device of the target device type, and the reader (such as UE) can add the first indication information in the first signaling.

[0120] For example, the reader can indicate the corresponding type of device to feedback in the query signaling before sending the query. After the IoT device receives the select signaling, the IoT device sends the device type of the IoT device to the reader in the RN16 signaling, the device type is determined according to at least one of the energy storage capability and the signal generation function of the IoT device (for example, device A, device B or device C). For example, the index of the device type is sent in the RN16 signaling. When the index received by the reader corresponds to the indication of device B or device C, it is determined that there is an IoT device of the target device type, and the reader (such as UE) can add the first indication information in the query signaling.

[0121] Optionally, before sending the first indication information to the IoT device through the first signaling or the signaling before the first signaling, the reader (such as UE) can determine whether the first signaling is for the IoT device of the target device type, when the reader determines that the first signaling is for the IoT device of the target device type, the first indication information can be added in the first signaling or the signaling before the first signaling, and the first indication information is sent to the IoT device through the first signaling or the signaling before the first signaling. The first indication information can be used to indicate the target power control parameter, and the first indication information can also be used to indicate the device type (for example, device B or device C).

[0122] In this application, yes can also be understood as is.

[0123] In another implementation, the first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling. The first signaling can also be replaced by any one or more of the following: the first signaling is acknowledgement (ack) signaling, and the first signaling is used to feed back acknowledgement information to the IoT device. Alternatively, the first signaling is access signaling, and the first signaling is used to instruct the IoT device to perform a read operation or a write operation, etc.

[0124] Specifically, the IoT device can send first information to the reader, and the first information can include a 16-bit random number RN16 or an electronic product code EPC. The first information can also include a device type of the IoT device, i.e., the device type of the IoT device is carried by the RN16 or the EPC, and the device type is determined according to at least one of energy storage capability and signal generation function of the IoT device. After receiving the first information, when the reader determines that the device type reported by the IoT device is a device (device B) with energy storage capability and without signal generation function, or a device (device C) with energy storage capability and with signal generation function, the reader can add first indication information in the first signaling, and send the first indication information to the IoT device through the first signaling. The first indication information is used to indicate a target power control parameter, and the first indication information can also be used to indicate the device type. Further, the following implementation modes can be included:

[0125] In a first implementation mode, the target power control parameter can be added in the first signaling. That is, the reader sends first indication information through the first signaling, and the first indication information includes the target power control parameter. Since the receiving sensitivities of different readers are different, the IoT device can obtain different detection threshold values of different readers, and determine whether the reader is a base station or a UE through the different detection threshold values included in the target power control parameter indicated by the first indication information. That is, the first indication information implicitly indicates the topology structure.

[0126] In a second implementation mode, a plurality of groups of power control parameters can be previously agreed between the reader and the IoT device, and one group of power control parameters corresponds to one index. The reader sends first indication information through the first signaling, and the first indication information includes a first index, and the first index is used to indicate a target power control parameter in the plurality of groups of preset power control parameters. Thus, the IoT device can obtain different topologies through the first index and the plurality of groups of preset power control parameters, determine the target power control parameter of the reader, and thus apply the target power control parameter under different topologies.

[0127] Further, the reader receives a second preamble of the first information from the IoT device, determines a second signal strength of the second preamble, and determines the target power control parameter according to the second signal strength. Further, the coverage of the reader can be determined according to the second signal strength, and the target power control parameter is determined according to the coverage of the reader. Then, the reader sends first indication information to the IoT device through the first signaling, and the first indication information is used to indicate the target power control parameter. It can be seen that the target power control parameter is not only determined based on different topologies, but also determined based on the signal strength of the IoT device. That is, not only the sensitivity of the reader is considered, but also the distance between the reader and the IoT device is considered. It is avoided that the signal of the IoT device which is far away is too strong to interfere with the reader.

[0128] The second preamble of the first information can be understood as a second preamble carried before the first information or a second preamble corresponding to the first information. As shown in FIG. 6, FIG. 6 is a schematic diagram of another signaling structure. Each first signaling or each first information transmitted between the reader and the IoT device adopts the signaling structure as shown in FIG. 6, which can include a preamble, data and a postamble. The data can be information contained or indicated by the first signaling or the first information, and the preamble is used to detect the arrival of the first information. The postamble is used to notify the end of the first information.

[0129] S502, the IoT device performs power control based on the target power control parameter.

[0130] Specifically, the IoT device can measure a first preamble of the first signaling or a signaling before the first signaling, determine a first signal strength of the first preamble, determine a link loss (path loss, PL) between the IoT device and the reader according to the first signal strength, and perform power control based on the link loss and the target power control parameter to realize access of the IoT device to the reader. The second preamble of the first signaling can be understood as a first preamble carried before the first signaling or a first preamble corresponding to the first signaling.

[0131] Optionally, the IoT device determines whether the IoT device is a target device type, the target device type including a device (device B) having energy storage capability and no signal generation function, or a device (device C) having energy storage capability and having a signal generation function; when it is determined that the IoT device is the target device type, the IoT device performs power control based on the target power control parameter.

[0132] In the application embodiment, in the case that the IoT device has limited capability and has no RRC connection, the target power control parameter is indicated by the first signaling or the signaling before the first signaling, so that the IoT device can perform power control according to the target power control parameter, optimal access of the IoT device is realized, energy saving effect is improved, and correct detection of data by the reader is guaranteed.

[0133] It can be understood that, in each of the above method embodiments, the method and operation implemented by the first device can also be implemented by a component (for example, a chip or a circuit) available for the first device, and the method and operation implemented by the second device can also be implemented by a component (for example, a chip or a circuit) available for the second device.

[0134] The application embodiment can divide the first device or the second device into functional modules according to the above method examples, for example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of the modules in the application embodiment is illustrative, and is only a logical functional division. In actual implementation, another division mode can be used. The following will be described by taking the division of each functional module corresponding to each function as an example.

[0135] The above describes the method provided by the application embodiment in detail in combination with FIG. 5. The following describes the communication device provided by the application embodiment in combination with FIG. 7 to FIG. 8. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, and therefore, the content not described in detail can be referred to the above method embodiment. For brevity, the description is not repeated here.

[0136] Please refer to FIG. 7, which is a structural schematic diagram of a communication device provided by the application embodiment. The communication device can include a receiving module 701, a processing module 702 and a sending module 703.

[0137] The communication device can implement the steps or procedures corresponding to the steps performed by the first device in the above method embodiments, for example, can be the first device, or a chip or circuit configured in the first device. The receiving module 701 and the sending module 703 are used to perform the transceiving related operations of the first device in the above method embodiments, and the processing module 702 is used to perform the processing related operations of the first device in the above method embodiments.

[0138] The receiving module 701 is configured to receive first indication information sent by a second device through first signaling or signaling before the first signaling, the first indication information being used to indicate a target power control parameter.

[0139] The processing module is configured to perform power control based on the target power control parameter.

[0140] Optionally, the first signaling is groupcast signaling, and the groupcast signaling includes select signaling or query signaling.

[0141] Optionally, the first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling.

[0142] Optionally, the first indication information includes the target power control parameter.

[0143] Optionally, the first indication information includes a first index, and the first index is used to indicate the target power control parameter in a plurality of preset groups of power control parameters.

[0144] Optionally, the sending module 703 is configured to send a device type of the first device to the second device, and the device type is determined according to at least one of an energy storage capability and a signal generation function of the first device.

[0145] Optionally, the first indication information is also used to indicate the device type.

[0146] Optionally, the processing module 702 is configured to determine whether the first device is a target device type, the target device type including a device with an energy storage capability and without a signal generation function, or a device with an energy storage capability and with a signal generation function; and when it is determined that the first device is the target device type, perform power control based on the target power control parameter.

[0147] Optionally, the processing module 702 is configured to measure a first preamble corresponding to the first signaling or the signaling before the first signaling, to determine a first signal strength of the first preamble; determine a link loss between the first device and the second device according to the first signal strength; and perform power control based on the link loss and the target power control parameter.

[0148] Optionally, the first device has no radio resource control (RRC) connection.

[0149] Optionally, the target power control parameter comprises at least one of a target power value or a loss compensation factor.

[0150] It should be noted that the implementation of each module can also correspond to the description of the corresponding method embodiment shown in FIG. 5, and the method and function performed by the first device in the above embodiments are executed.

[0151] Please refer to FIG. 8, which is a structural schematic diagram of another communication apparatus provided by an embodiment of the present application. The communication apparatus can comprise a sending module 801, a processing module 802 and a receiving module 803.

[0152] The communication apparatus can implement the steps or processes performed by the second device in the above method embodiments, for example, it can be the second device, or a chip or circuit configured in the second device. The sending module 801 and the receiving module 803 are used to perform the transceiving related operations of the second device in the above method embodiments, and the processing module 802 is used to perform the processing related operations of the second device in the above method embodiments.

[0153] The sending module 801 is configured to send first indication information to the first device through first signaling or signaling before the first signaling, wherein the first indication information is used to indicate a target power control parameter, and the target power control parameter is used for power control.

[0154] Optionally, the first signaling is groupcast signaling, and the groupcast signaling comprises select signaling or query signaling.

[0155] Optionally, the first signaling is unicast signaling, and the unicast signaling comprises acknowledgement (ack) signaling or access signaling.

[0156] Optionally, the first indication information comprises the target power control parameter.

[0157] Optionally, the first indication information comprises a first index, and the first index is used to indicate the target power control parameter in a plurality of preset groups of power control parameters.

[0158] Optionally, the processing module 802 is configured to determine whether there is a first device of a target device type, wherein the target device type comprises a device having energy storage capability and no signal generation function, or a device having energy storage capability and having signal generation function; and when it is determined that there is the first device of the target device type, the first indication information is sent to the first device through the first signaling or the signaling before the first signaling.

[0159] Optionally, the receiving module 803 is configured to receive the device type of the first device sent by the first device, wherein the device type is determined according to at least one of the energy storage capability and the signal generation function of the first device.

[0160] Optionally, the first indication information is further used to indicate the device type.

[0161] Optionally, the processing module 802 is configured to receive a second preamble of the first information from the first device, determine a second signal strength of the second preamble, and determine the target power control parameter according to the second signal strength.

[0162] Optionally, the first information includes a 16-bit random number RN16 or an electronic product code EPC.

[0163] Optionally, the first device has no radio resource control (RRC) connection.

[0164] Optionally, the target power control parameter includes at least one of a target power value or a loss compensation factor.

[0165] It should be noted that the implementation of each module can also correspond to the description of the corresponding method embodiment shown in FIG. 5, and the method and function performed by the second device in the above embodiments are executed.

[0166] FIG. 9 is a structural schematic diagram of a first device according to an embodiment of the present application. The first device can be applied to the system shown in FIG. 4, and perform the functions of the first device in the above method embodiments, or implement the steps or processes performed by the first device in the above method embodiments.

[0167] As shown in FIG. 9, the first device includes a processor 901 and a transceiver 902. Optionally, the first device further includes a memory 903. The processor 901, the transceiver 902 and the memory 903 can communicate with each other through internal connection paths, and transfer control and / or data signals. The memory 903 is used to store a computer program, and the processor 901 is used to call and run the computer program from the memory 903 to control the transceiver 902 to transceive signals. Optionally, the first device can further include an antenna for transmitting uplink data or uplink control signaling output by the transceiver 902 through wireless signals.

[0168] The processor 901 and the memory 903 can be combined into one processing device, and the processor 901 is configured to execute program codes stored in the memory 903 to implement the above functions. In a specific implementation, the memory 903 can be integrated in the processor 901 or independent of the processor 901. The processor 901 can correspond to the processing module in FIG. 7.

[0169] The transceiver 902 can correspond to the receiving module and the sending module in FIG. 7, and can also be referred to as a transceiving unit or a transceiving module. The transceiver 902 can include a receiver (or receiver circuit) and a transmitter (or transmitter circuit). The receiver is configured to receive signals, and the transmitter is configured to transmit signals.

[0170] It should be understood that the first device shown in FIG. 9 can implement each process of the method embodiment shown in FIG. 5 related to the first device. The operation and / or function of each module in the first device are respectively used to implement the corresponding flow in the above method embodiment. For details, refer to the description in the above method embodiment, and the detailed description is appropriately omitted here to avoid repetition.

[0171] The processor 901 can be configured to execute the actions implemented internally by the first device described in the above method embodiments, and the transceiver 902 can be configured to execute the actions of sending or receiving by the first device to or from the second device described in the above method embodiments. For details, refer to the description in the above method embodiments, and the detailed description is not repeated here.

[0172] The processor 901 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device, transistor logic, hardware components, or any combination thereof. It can implement or execute various example logical blocks, modules, and circuits described in connection with the disclosure. The processor 901 can also be a combination of computing components, such as one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. The communication bus 904 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, or the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in FIG. 9, but it does not mean that there is only one bus or only one type of bus. The communication bus 904 is used to realize the connection and communication between the components. In the embodiments of the present application, the transceiver 902 is used to communicate signaling or data with other node devices. The memory 903 can include volatile memory, such as non-volatile random access memory (NVRAM), phase change RAM (PRAM), magnetoresistive RAM (MRAM), and the like, and can also include non-volatile memory, such as at least one magnetic disk storage device, electrically erasable programmable read-only memory (EEPROM), a flash memory device, such as a NOR flash memory or a NAND flash memory, a semiconductor device, such as a solid state disk (SSD), and the like. The memory 903 can also be at least one storage device located away from the processor 901. The memory 903 can also store a set of computer program codes or configuration information. Optionally, the processor 901 can also execute the program stored in the memory 903. The processor can cooperate with the memory and the transceiver to execute any method and function of the first device in the embodiments of the application.

[0173] FIG. 10 is a structural schematic diagram of a second device provided in the embodiments of the present application. The second device can be applied in the system shown in FIG. 4, and can execute the functions of the second device in the method embodiments, or implement the steps or processes executed by the second device in the method embodiments.

[0174] As shown in FIG. 10, the second device includes a processor 1001 and a transceiver 1002. Optionally, the second device further includes a memory 1003. Wherein the processor 1001, the transceiver 1002 and the memory 1003 can communicate with each other through internal connection paths, transfer control and / or data signals, the memory 1003 is used to store a computer program, the processor 1001 is used to call and run the computer program from the memory 1003 to control the transceiver 1002 to transceive signals. Optionally, the second device can also include an antenna for transmitting uplink data or uplink control signaling output by the transceiver 1002 through wireless signals.

[0175] The processor 1001 and the memory 1003 described above can be combined into a processing device, and the processor 1001 is used to execute the program code stored in the memory 1003 to realize the above functions. Specifically, the memory 1003 can also be integrated in the processor 1001, or independent of the processor 1001. The processor 1001 can correspond to the processing module in FIG. 8.

[0176] The transceiver 1002 described above can correspond to the receiving module and the sending module in FIG. 8, and can also be called a transceiving unit or a transceiving module. The transceiver 1002 can include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Wherein the receiver is used to receive signals, and the transmitter is used to transmit signals.

[0177] It should be understood that the second device shown in FIG. 10 can realize each process of the second device involved in the method embodiment shown in FIG. 5. The operation and / or function of each module in the second device is respectively used to realize the corresponding flow in the above method embodiment. For details, please refer to the description in the above method embodiment, and the detailed description is appropriately omitted here.

[0178] The processor 1001 described above can be used to execute the actions described in the above method embodiments and implemented internally by the second device, and the transceiver 1002 can be used to execute the actions described in the above method embodiments and sent by the second device to the first device or received from the first device. For details, please refer to the description in the above method embodiments, and the description is not repeated here.

[0179] The processor 1001 can be any of the various types of processors mentioned above. The communication bus 1004 allows the communication between each component in the device. The device's transceiver 1002 is used to communicate with other devices on the network. The memory 1003 can be, but is not limited to, a cache, SRAM, DRAM, RDRAM, RAM, ROM, EEPROM, flash memory or any memory capable of storing digital data. The memory 1003 can be volatile or non-volatile. The transceiver 1002 and memory 1003 can be implemented as a chipset, with the transceiver 1002 and the memory 1003 each being a separate component constituting the chipset. Alternatively, the transceiver 1002 and the memory 1003 can be implemented as a single component constituting the chipset. The processor 1001 can be a component of the device 1000 implementing the method for receiving and / or transmitting described above, or alternatively, can be a component of a second device (not shown) implementing a method for receiving and / or transmitting described above.

[0180] The embodiments of the present application also provide a chip system, which comprises a processor for supporting the first device or the second device to implement the functions described above in any of the embodiments, such as generating or processing the first indication information described above in the methods.

[0181] In a possible design, the chip system can further comprise a memory for computer programs and data necessary for the first device or the second device. The chip system can be composed of a chip, or can comprise a chip and other discrete components. The input and output of the chip system correspond to the receiving and transmitting operations of the first device or the second device in the method embodiments, respectively.

[0182] According to the method provided by the embodiments of the present application, the present application further provides a computer program product, which comprises a computer program. When the computer program is run on a computer, the computer program enables the computer to perform the method in any of the embodiments shown in FIG. 5.

[0183] According to the method provided by the embodiments of the present application, the present application further provides a computer readable medium, which stores a computer program. When the computer program is run on a computer, the computer program enables the computer to perform the method in any of the embodiments shown in FIG. 5.

[0184] According to the method provided by the embodiments of the present application, the present application further provides a communication system, which comprises one or more first devices and one or more second devices.

[0185] 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 instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as high-density digital video disc (digital video disc, DVD)), or semiconductor media (such as solid state disc (solid state disc, SSD)) and the like.

[0186] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method further includes: The first device receives first indication information sent by a second device through first signaling or signaling before the first signaling, the first indication information being used to indicate a target power control parameter; The first device performs power control based on the target power control parameter.

2. The method of claim 1, wherein, The first signaling is groupcast signaling, and the groupcast signaling includes select signaling or query signaling.

3. The method of claim 1, wherein, The first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling.

4. The method according to any one of claims 1 to 3, characterized in that, The first indication information includes the target power control parameter.

5. The method according to any one of claims 1 to 3, wherein The first indication information includes a first index, the first index being used to indicate the target power control parameter in a plurality of preset groups of power control parameters.

6. The method according to any one of claims 1 to 5, wherein, The method further includes: The first device sends a device type of the first device to the second device, the device type being determined according to at least one of an energy storage capability and a signal generation function of the first device.

7. The method of claim 6, wherein, The first indication information is further used to indicate the device type.

8. The method according to any one of claims 1 to 7, wherein The method further includes: The first device determines whether the first device is a target device type, the target device type including a device having an energy storage capability and no signal generation function or a device having an energy storage capability and having a signal generation function; When it is determined that the first device is the target device type, the first device performs power control based on the target power control parameter.

9. The method according to any one of claims 1 to 8, wherein, The first device performing power control based on the target power control parameter includes: The first device measures a first preamble corresponding to the first signaling or the signaling before the first signaling to determine a first signal strength of the first preamble; The first device determines a link loss between the first device and the second device according to the first signal strength; The first device performs power control based on the link loss and the target power control parameter.

10. The method of any one of claims 1-9, wherein, The first device has no radio resource control (RRC) connection.

11. The method of any one of claims 1-10, wherein, The target power control parameter includes at least one of a target power value or a loss compensation factor.

12. A communication method characterized by comprising: The method further includes: A second device sends first indication information to a first device through first signaling or signaling before the first signaling, the first indication information being used to indicate a target power control parameter, the target power control parameter being used for power control.

13. The method of claim 11, wherein, The first signaling is groupcast signaling, and the groupcast signaling includes select signaling or query signaling.

14. The method of claim 11, wherein, The first signaling is unicast signaling, and the unicast signaling includes acknowledgement (ack) signaling or access signaling.

15. The method according to any one of claims 12 to 14, wherein, The first indication information includes the target power control parameter.

16. The method of any one of claims 12-14, wherein, The first indication information includes a first index, the first index being used to indicate the target power control parameter in a plurality of preset groups of power control parameters.

17. The method of any one of claims 12-16, wherein, The method further includes: The second device determines whether there is a first device of a target device type, the target device type including a device having an energy storage capability and no signal generation function or a device having an energy storage capability and having a signal generation function; When it is determined that the first device of the target device type exists, the second device sends the first indication information to the first device through the first signaling or the signaling before the first signaling.

18. The method of claims 12-17, wherein, The method further comprises: The second device receives the device type of the first device sent by the first device, and the device type is determined according to at least one of the energy storage capability and the signal generation function of the first device.

19. The method of claim 18, wherein, The first indication information is further used to indicate the device type.

20. The method of any one of claims 12-19, wherein, The method further comprises: The second device receives a second preamble of the first information from the first device, and determines a second signal strength of the second preamble; The second device determines the target power control parameter according to the second signal strength.

21. The method of claim 20, wherein, The first information comprises a 16-bit random number RN16 or an electronic product code EPC.

22. The method of any one of claims 12-21, wherein, The first device has no radio resource control RRC connection.

23. The method of any one of claims 12-22, wherein, The target power control parameter comprises at least one of a target power value or a loss compensation factor.

24. A communications device, characterized by The communication device comprises a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to make the communication device execute the method in any one of claims 1-11.

25. A communications device, characterized by The communication device comprises a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to make the communication device execute the method in any one of claims 12-23.

26. A computer readable storage medium, characterized in that, The computer readable storage medium comprises a computer program, when the computer program is run by the processor, the method in any one of claims 1-11 or any one of claims 12-23 is realized.

27. A chip, characterized by The chip comprises a processor and a communication interface, the communication interface is used to communicate with external devices or internal devices, and the processor is used to realize the method in any one of claims 1-11 or any one of claims 12-23.

28. A computer program product comprising a computer program, characterised in that, When the computer program is executed, the computer executes the method in any one of claims 1-11 or any one of claims 9-23.

Images