A method and apparatus in a node for internet of things communication in wireless communication

Abstract

The application discloses a method and device for Internet of Things communication in a node for wireless communication. The node receives a first information block, which indicates a first power control parameter value and a second power control parameter value; sends a first PRDCH, which adopts OOK; the first PRDCH is used for an Internet of Things access process; a transmission power value of the first PRDCH is equal to a smaller value compared between a maximum output power value and a first transmission power value, the maximum output power value depends on a power class of a sender of the first PRDCH; the first transmission power value depends on a target power control parameter value, which is equal to one of the first power control parameter value or the second power control parameter value, and the target power control parameter value depends on an order of a message carried by the first PRDCH in the Internet of Things access process. The application optimizes power control and improves transmission quality.

Description

Technical Field

[0001] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to schemes and apparatus for power control of signals in wireless communication. Background Technology

[0002] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. To meet the diverse performance needs of various application scenarios, research on New Radio (NR) (or 5G) technology was initiated at the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting. With the widespread application of 5G, new business models and application scenarios are constantly emerging, such as the Ambient Internet of Things (IoT). Existing 5G standards cannot fully meet these new demands, therefore 3GPP is preparing to begin related preliminary research. Summary of the Invention

[0003] The 5G NR system initiated research on Ambient Internet of Things (A-IoT) in Rel-19. In this Ambient Physical Network (APN), OOK (Output of Kinematics) is expected to be used for transmission between readers and IoT devices, and between IoT devices and readers. This research is still in its early stages. The applicant anticipates that A-IoT will also become an important component of future 6G networks. Furthermore, the applicant's research has revealed that the transmit power of OOK-based signals emitted by terminals acting as readers in the A-IoT requires new support and definition.

[0004] This application discloses a solution to the problem of power control for signals using OOK (Out of Memory). It should be noted that the description in this application only uses reader-to-IoT device transmission as a typical application scenario or example; this application is also applicable to 6G networks or other scenarios facing similar problems in the future (e.g., scenarios where OOK transmission power needs to be considered, or scenarios where different power levels are used in different steps during access, such as scenarios supporting energy saving, or scenarios supporting user equipment-to-user equipment transmission, or for different application scenarios, such as eMBB, URLLC, full-duplex networks, non-terrestrial networks, inductively coupled networks, smart metasurfaces, terahertz networks, V2X can also achieve similar technical effects). Furthermore, using a unified solution for different scenarios (including but not limited to eMBB, URLLC, energy saving, IoT, full-duplex networks, non-terrestrial networks, inductively coupled networks, smart metasurfaces, terahertz networks, V2X scenarios) or different application parameters also helps reduce hardware complexity and cost. Where there is no conflict, the embodiments and features used in the terminals of this application can be applied to the devices used in the IoT devices or base stations of this application, and vice versa.

[0005] This application discloses a method for use in a terminal, characterized by comprising:

[0006] Receive a first information block, the first information block indicating a first power control parameter value and a second power control parameter value;

[0007] Send the first PRDCH, which uses OOK;

[0008] In this process, the first PRDCH is used for IoT access; the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value, wherein the maximum output power value depends on the power level of the sender of the first PRDCH; the first transmit power value depends on the target power control parameter value, wherein the target power control parameter value is equal to either the first power control parameter value or the second power control parameter value, wherein the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process.

[0009] As an example, considering that the paging message and the PRDCH carrying the Msg2 message may have different broadcast types, target received power, and path loss during the IoT access process, different power parameters can be used in different access steps, which is more flexible, optimizes power control, reduces interference to other links, and improves the success rate of IoT device access.

[0010] According to one aspect of this application, the above method is characterized in that when the first PRDCH carries paging information, the target power control parameter value is equal to the first power control parameter value; and when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

[0011] According to one aspect of this application, the above method is characterized in that when the first PRDCH carries a paging message, the first transmit power value depends on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value depends on the first path loss, which is the path loss between the terminal and the receiver of the first PRDCH.

[0012] According to one aspect of this application, the above method is characterized by comprising:

[0013] Receive the first PDRCH, which carries Msg1;

[0014] The first path loss is calculated based on the received power of the terminal when receiving the preamble of the first PDRCH.

[0015] According to one aspect of this application, the method is characterized in that the calculation of the first path loss depends on the device type of the receiver of the first PDRCH, the device type including at least one of type 1, type 2a and type 2b; when the device type is type 1 or type 2a, the calculation of the first path loss depends on the transmit power value of the carrier transmitted by the terminal and used for back reflection of the first PDRCH; when the device type is type 2b, the calculation of the first path loss depends on the transmit power value of the first PDRCH, the transmit power value of the first PDRCH depending on the power level of the sender of the first PDRCH.

[0016] According to one aspect of this application, the method is characterized in that the first transmit power value is equal to the smaller of the first power value and the second power value, the first power value depending on the downlink path loss, and the second power value depending on the target power control parameter value.

[0017] According to one aspect of this application, the above method is characterized in that the first transmit power value is linearly related to the third power value, the third power value depending on whether the first PRDCH carries L1 control information.

[0018] This application discloses a terminal, characterized in that the terminal includes:

[0019] One or more processors and memory;

[0020] The memory is coupled to the one or more processors and is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the terminal to execute the above-described method.

[0021] This application discloses a method for use in Internet of Things (IoT) devices, characterized by comprising:

[0022] Receive the first PRDCH, which uses OOK;

[0023] In this process, the sender of the first PRDCH receives a first information block, which indicates a first power control parameter value and a second power control parameter value; the first PRDCH is used in the IoT access process; the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value, wherein the maximum output power value depends on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, which is equal to either the first power control parameter value or the second power control parameter value, wherein the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process.

[0024] According to one aspect of this application, the above method is characterized in that when the first PRDCH carries paging information, the target power control parameter value is equal to the first power control parameter value; and when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

[0025] According to one aspect of this application, the above method is characterized in that when the first PRDCH carries a paging message, the first transmit power value depends on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value depends on the first path loss, which is the path loss between the sender of the first PRDCH and the IoT device.

[0026] According to one aspect of this application, the above method is characterized by comprising:

[0027] Send the first PDRCH, which carries Msg1;

[0028] The first path loss is calculated based on the received power of the receiver of the first PDRCH when it receives the preamble of the first PDRCH.

[0029] According to one aspect of this application, the method is characterized in that the calculation of the first path loss depends on the device type of the Internet of Things (IoT) device, the device type including at least one of type 1, type 2a, and type 2b; when the device type is type 1 or type 2a, the calculation of the first path loss depends on the transmit power value of the carrier used for back reflection of the first PDRCH transmitted by the sender of the first PDRCH; when the device type is type 2b, the calculation of the first path loss depends on the transmit power value of the first PDRCH, the transmit power value of the first PDRCH depending on the power level of the IoT device.

[0030] According to one aspect of this application, the method is characterized in that the first transmit power value is equal to the smaller of the first power value and the second power value, the first power value depending on the downlink path loss, and the second power value depending on the target power control parameter value.

[0031] According to one aspect of this application, the above method is characterized in that the first transmit power value is linearly related to the third power value, the third power value depending on whether the first PRDCH carries L1 control information.

[0032] This application discloses an Internet of Things (IoT) device, characterized in that the IoT device includes: one or more processors and a memory;

[0033] The memory is coupled to the one or more processors and is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the IoT device to perform the above-described method.

[0034] As an example, compared with conventional solutions, this application has the following advantages:

[0035] Power control has been optimized;

[0036] Improved transmission performance;

[0037] This improved the reliability of transmission and enhanced the robustness of the system. Attached Figure Description

[0038] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0039] Figure 1 A flowchart of terminal transmission according to an embodiment of this application is shown;

[0040] Figure 2A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0041] Figure 3 A schematic diagram of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0042] Figure 4 A schematic diagram of a terminal and an Internet of Things (IoT) device according to an embodiment of this application is shown;

[0043] Figure 5 A flowchart illustrating the transmission between a terminal and an IoT device according to an embodiment of this application is shown;

[0044] Figure 6 A schematic diagram showing the relationship between the first PDRCH and the target power control parameter value according to an embodiment of this application is illustrated;

[0045] Figure 7 A schematic diagram of downlink path loss and first path loss according to an embodiment of this application is shown;

[0046] Figure 8 A schematic diagram showing the relationship between the first PDRCH and the leader of the first PDRCH according to an embodiment of this application is shown;

[0047] Figure 9 A schematic diagram illustrating the relationship between the calculation of a first path loss and the equipment type according to an embodiment of this application is shown;

[0048] Figure 10 A schematic diagram showing the relationship between a first transmit power value, a first power value, and a second power value according to an embodiment of this application is illustrated.

[0049] Figure 11 A schematic diagram showing the relationship between the first PRDCH and L1 control information according to an embodiment of this application is shown;

[0050] Figure 12 A structural block diagram of a processing apparatus for a terminal according to an embodiment of this application is shown;

[0051] Figure 13 A structural block diagram of a processing apparatus for an Internet of Things device according to an embodiment of this application is shown;

[0052] Figure 14 A schematic diagram of the structure of an A-IoT device according to an embodiment of this application is shown. Detailed Implementation

[0053] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0054] Example 1

[0055] Example 1 illustrates a flowchart 100 of terminal transmission according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown. In the appendix Figure 1 In the diagram, each box represents a step. It is particularly important to emphasize that the order of the boxes in the diagram does not restrict the chronological order of the steps they represent.

[0056] In Embodiment 1, the terminal in this application receives a first information block in step 101, the first information block indicating a first power control parameter value and a second power control parameter value; the terminal sends a first PRDCH in step 102, the first PRDCH using OOK; the first PRDCH is used in the IoT access process; the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value, the maximum output power value depending on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, the target power control parameter value is equal to either the first power control parameter value or the second power control parameter value, the target power control parameter value depending on the order of the messages carried by the first PRDCH in the IoT access process.

[0057] As an example, the terminal is a reader device of the Internet of Things (IoT) device in this application.

[0058] As an example, the IoT device in this application is an Ambient IoT (A-IoT) device.

[0059] As an example, the IoT device in this application is a low-power IoT device.

[0060] As one embodiment, the first information block is transmitted via an air interface or a wireless interface.

[0061] As one embodiment, the first information block includes all or part of a higher-layer signaling or physical-layer signaling.

[0062] As one embodiment, the first information block includes all or part of an RRC (Radio Resource Control) layer signaling or a MAC (Medium Access Control) layer signaling.

[0063] As one embodiment, the first information block is either cell-specific or user equipment-specific.

[0064] As one embodiment, the first information block is configured for the bandwidth part (BWP) (Per BWP). As a supplementary embodiment to the above embodiment, existing designs can be reused for BWP configuration, reducing standardization efforts.

[0065] As an example, the first information block includes at least one field in a DCI (Downlink Control Information) format.

[0066] As one embodiment, the first information block includes more than one sub-information block, each of the sub-information blocks being an IE (Information Element) or a field in the RRC signaling to which the first information block belongs; the one or more sub-information blocks included in the first information block configure the first PRDCH.

[0067] As one example, the first information block includes at least one field in the IE “PRDCH-Config”.

[0068] As an example, the first information block includes at least one field in the IE “PRDCH-Powercontrol”.

[0069] As an example, the first information block includes at least one field in the IE "BWP-R2DDedicated".

[0070] As an example, the first information block includes at least one field in the IE "R2D-Config".

[0071] As an example, the first information block includes at least one field in the IE "R2D-BWP-Config".

[0072] As one example, the first information block includes at least one field in the IE "PRDCH-TxConfig".

[0073] As an example, the first information block includes at least one field in the IE "ServingCellConfig".

[0074] As one example, the first information block is transmitted within the terminal.

[0075] As one embodiment, the first information block is passed from the higher layer of the terminal to the physical layer of the terminal.

[0076] As one embodiment, the first information block is transmitted from the core network to the terminal.

[0077] As an example, the first information block is configured.

[0078] As an example, the first information block is pre-configured.

[0079] As an example, the inclusion of higher-level information in the first information block helps reduce signaling overhead and standard impact while maintaining good compatibility.

[0080] As an example, the first information block is transmitted on the PDCCH (Physical Downlink Control Channel).

[0081] As an example, the first information block is transmitted on PDSCH (Physical Downlink Shared Channel).

[0082] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the first information block explicitly or implicitly indicates the first power control parameter value and the second power control parameter value.

[0083] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: some or all of the fields included in the first information block indicate the first power control parameter value and the second power control parameter value.

[0084] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the RRC signaling included in the first information block configures the first power control parameter value and the second power control parameter value respectively.

[0085] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the first information block includes two sub-information blocks, the two sub-information blocks respectively indicating the first power control parameter value and the second power control parameter value.

[0086] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the two fields included in the first information block are respectively configured with the first power control parameter value and the second power control parameter value.

[0087] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the first information block indicates the first power control parameter value and the second power control parameter value respectively, and the index corresponding to the first power control parameter value and the second power control parameter value respectively.

[0088] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the field "p0-PRDCH-AlphaSet" included in the first information block configures the first power control parameter value and the second power control parameter value, wherein the first power control parameter value and the second power control parameter value correspond to different indices.

[0089] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the first information block respectively indicates the index associated with the first power control parameter value and the second power control parameter value.

[0090] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: at least one field in the first information block indicates the target power control parameter set adopted by the first PRDCH, and the first power control parameter value and the second power control parameter value belong to the target power control parameter set.

[0091] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the first information block respectively indicates the index of the power control parameter set to which the first power control parameter value and the second power control parameter value belong.

[0092] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the first information block enables the first power control parameter value and the second power control parameter value.

[0093] As one embodiment, "the first information block indicates the first power control parameter value and the second power control parameter value" includes: the first information block indicates that the target power control parameter value is equal to one of the first power control parameter value or the second power control parameter value.

[0094] As an example, the unit of the first power control parameter value is dBm (millidecibels).

[0095] As an example, the unit of the first power control parameter value is watts or milliwatts.

[0096] As an example, the first power control parameter value is a candidate value of a power parameter used to calculate the first transmit power value.

[0097] As an example, the first power control parameter value is a parameter value in the PRDCH power control.

[0098] As an example, the first power control parameter value is an open-loop power control parameter value.

[0099] As an example, the first power control parameter value is a candidate value for an open-loop power control parameter.

[0100] As an example, the first power control parameter value is the target received power value.

[0101] As an example, the first power control parameter value is the target transmission power value.

[0102] As an example, the first power control parameter value is the value of the path loss compensation factor α.

[0103] As an example, the first power control parameter value is a candidate value of the path loss compensation factor α.

[0104] As an example, the first power control parameter value is a candidate value for the target received power P0 of the first PRDCH.

[0105] As an example, the first power control parameter value is a power offset.

[0106] As an example, the value of the first power control parameter can be greater than 0, less than 0, or equal to 0.

[0107] As an example, the first power control parameter value is a path loss value.

[0108] As an example, the unit of the second power control parameter value is dBm (millidecibels).

[0109] As an example, the unit of the second power control parameter value is watts or milliwatts.

[0110] As an example, the second power control parameter value is a candidate value of a power parameter used to calculate the first transmit power value.

[0111] As an example, the second power control parameter value is a parameter value in the PRDCH power control.

[0112] As an example, the second power control parameter value is an open-loop power control parameter value.

[0113] As an example, the second power control parameter value is a candidate value for an open-loop power control parameter.

[0114] As an example, the second power control parameter value is the target received power value.

[0115] As an example, the second power control parameter value is the target transmission power value.

[0116] As an example, the second power control parameter value is the value of the path loss compensation factor α.

[0117] As an example, the second power control parameter value is a candidate value for the path loss compensation factor α.

[0118] As an example, the second power control parameter value is a candidate value for the target received power P0 of the first PRDCH.

[0119] As an example, the second power control parameter value is a power offset.

[0120] As an example, the value of the second power control parameter can be greater than 0, less than 0, or equal to 0.

[0121] As an example, the first power control parameter value is a path loss value.

[0122] As an example, the units of the first power control parameter value and the second power control parameter value are the same.

[0123] As an example, the first power control parameter value and the second power control parameter value are the same parameter for power control of the PRDCH.

[0124] As an example, the first power control parameter value and the second power control parameter value are parameter values ​​of two parameters of the same type.

[0125] As an example, the first power control parameter value and the second power control parameter value are two candidate values ​​of a power parameter used to calculate the first transmit power value.

[0126] As an example, the first power control parameter value and the second power control parameter value can be the same or different.

[0127] As an example, the first power control parameter value and the second power control parameter value are configured by the first information block respectively, and the first power control parameter value and the second power control parameter value can be the same or different.

[0128] As an example, the first power control parameter value and the second power control parameter value are configured or indicated by the first information block for different steps in the IoT access process.

[0129] As an example, the first information block indicates the power control parameter values ​​of the PRDCH carrying the paging message and the PRDCH carrying Msg2, respectively. The power control parameter value of the PRDCH carrying the paging message is the first power control parameter value, and the power control parameter value of the PRDCH carrying Msg2 is the second power control parameter value.

[0130] As an example, the first information block indicates the power control parameter values ​​of the PRDCH carrying the paging message and the PRDCH carrying Msg2, respectively. The power control parameter value of the PRDCH carrying the paging message is the second power control parameter value, and the power control parameter value of the PRDCH carrying Msg2 is the first power control parameter value.

[0131] As an example, the first power control parameter value is the power control parameter value for the paging message (or message 0) in the IoT access process, and the second power control parameter value is the power control parameter value for Msg2 in the IoT access process.

[0132] As an example, the second power control parameter value is the power control parameter value for the paging message (or message 0) in the IoT access process, and the first power control parameter value is the power control parameter value for Msg2 in the IoT access process.

[0133] As an example, the recipient of the first PRDCH is an IoT (Internet of Things) device.

[0134] As an example, the recipient of the first PRDCH is an Ambient IoT (A-IoT) device.

[0135] As an example, the recipient of the first PRDCH is an RFID (Radio Frequency Identification) device.

[0136] As an example, the recipient of the first PRDCH and the IoT device in this application are equivalent or can be used interchangeably.

[0137] As an example, the first PRDCH is a baseband signal or radio frequency signal of PRDCH (Physical Reader to Device Channel).

[0138] As one example, the first PRDCH is transmitted over a physical channel from the reader to the IoT device.

[0139] As an example, the first PRDCH carries physical layer control information.

[0140] As an example, the first PRDCH carries physical layer control information and higher layer control information.

[0141] As an example, the first PRDCH includes a preamble.

[0142] As an example, the first PRDCH does not include a preamble.

[0143] As an example, the first PRDCH carries all or part of the bits in a TB (transport block).

[0144] As an example, all or part of the bits in a TB are used to generate the first PRDCH.

[0145] As one example, "the first PRDCH adopts OOK" includes: the first PRDCH is a signal that only includes high and low levels.

[0146] As an example, "the first PRDCH uses OOK" includes: the modulation scheme of the first PRDCH includes OOK.

[0147] As an example, "the first PRDCH uses OOK" includes: the generation process of the first PRDCH includes OOK.

[0148] As an example, "the first PRDCH uses OOK" includes: the encoding method of the first PRDCH includes OOK.

[0149] As an example, "the first PRDCH uses OOK" includes: OOK is used in the waveform of the first PRDCH.

[0150] As an example, "the first PRDCH adopts OOK" includes: the input sequence for the transform precoding of the first PRDCH is a bit sequence.

[0151] As an example, "the first PRDCH adopts OOK" includes: the input sequence of the transform precoding for the first PRDCH is not a complex numerical sequence.

[0152] As an example, "the first PRDCH adopts OOK" includes: the input sequence for transform precoding of the first PRDCH is an On / Off sequence.

[0153] As an example, "the first PRDCH adopts OOK" includes: the input sequence for the transform precoding of the first PRDCH is a high-low level sequence.

[0154] As an example, the input sequence for the transform precoding of the first PRDCH is a linearly encoded bit sequence.

[0155] As an example, the input sequence for the transform precoding of the first PRDCH is a Manchester-coded bit sequence.

[0156] As an example, the transform precoding for the first PRDCH includes DFT (Discrete Fourier Transform).

[0157] As an example, the transform precoding for the first PRDCH includes FFT (Fast Fourier Transform).

[0158] As an example, the number of RBs (resource blocks) occupied by the first PRDCH in the frequency domain is equal to... Where α2, α3, and α5 are all non-negative integers.

[0159] As an example, the first PRDCH is a high / low level signal or an On / Off signal.

[0160] As an example, the first PRDCH is generated by at least one of the following: CRC (Cyclic Redundancy Check) attachment, line coding, and OFDM-based OOK generation.

[0161] As an example, the IoT access process is the random access process for IoT devices in this application.

[0162] As an example, the IoT access process includes the contention-based random access process for IoT devices as described in this application.

[0163] As an example, the IoT access process includes the Contention-Free Random Access (CFRA) process for IoT devices as described in this application.

[0164] As one embodiment, the IoT access process includes a two-step Contention Based Random Access (CBRA) process for the IoT device in this application. As a supplementary embodiment, the two-step CBRA includes the IoT device sending Msg1 and the terminal responding with Msg2 in response to Msg1.

[0165] As one embodiment, the IoT access process includes a three-step Contention Based Random Access (CBRA) process for the IoT device described in this application. As a supplementary embodiment, the three-step CBRA includes the IoT device sending Msg1 (message 1), the terminal responding to Msg1 with Msg2 (message 2), and the IoT device sending Msg3 (message 3).

[0166] As an example, the IoT access process is an inventory process.

[0167] As an example, the IoT access process is an inventory and command process.

[0168] As one example, the IoT access process includes paging (or Msg0) and message 1 (Msg1).

[0169] As one example, the IoT access process includes paging (or Msg0), message 1 (Msg1), and message 2 (Msg2).

[0170] As an example, the IoT access process includes paging (or Msg0), message 1 (Msg1), message 2 (Msg2), and message 3 (Msg3).

[0171] As an example, the IoT access process is triggered by the reader device of the IoT device in this application.

[0172] As an example, the IoT access process is triggered by the terminal.

[0173] As an example, the IoT access process includes a message that triggers the IoT access process.

[0174] As one example, "the first PRDCH is used in the IoT access process" includes: the message carried by the first PRDCH belongs to a certain step of the IoT access process.

[0175] As one example, "the first PRDCH is used in the IoT access process" includes: the first PRDCH belongs to the IoT access process.

[0176] As one example, "the first PRDCH is used in the IoT access process" includes: the first PRDCH triggers the IoT access process or the first PRDCH belongs to the IoT access process.

[0177] As one example, "the first PRDCH is used in the IoT access process" includes: the first PRDCH carries a paging message or Msg2.

[0178] As one embodiment, "the first PRDCH is used in the IoT access process" includes: the IoT access process includes paging (or Msg0), message 1 (Msg1), message 2 (Msg2) and message 3 (Msg3), and the first PRDCH carries a paging message or Msg2.

[0179] As an example, "the first PRDCH is used for the IoT access process" includes: the IoT access process includes paging (or Msg0), message 1 (Msg1) and message 2 (Msg2), and the first PRDCH carries the paging message or Msg2.

[0180] As one example, "the first PRDCH is used for the IoT access process" includes: the first PRDCH triggers the IoT access process.

[0181] As an example, "the first PRDCH is used in the IoT access process" includes: the first PRDCH is the initial transmission or retransmission of a paging message (or Msg0), or the initial transmission or retransmission of Msg2.

[0182] As an example, "the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value" includes: the transmit power value of the first PRDCH is the result of taking the smaller value between the maximum output power value and the first transmit power value.

[0183] As one embodiment, "the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value" includes: when the maximum output power value is greater than the first transmit power value, the transmit power value of the first PRDCH is equal to the first transmit power value; when the maximum output power value is less than the first transmit power value, the transmit power value of the first PRDCH is equal to the maximum output power value; when the maximum output power value is equal to the first transmit power value, the transmit power value of the first PRDCH is equal to the maximum output power value or the first transmit power value.

[0184] As an example, the unit of the transmit power value of the first PRDCH is watts or milliwatts.

[0185] As an example, the unit of the transmit power value of the first PRDCH is dBm.

[0186] As an example, the transmit power value of the first PRDCH is equal to the transmission occasion in the time domain and the transmission power in the uplink BWP in the frequency domain.

[0187] As an example, the transmit power value of the first PRDCH is the transmit power value of the first PRDCH at the antenna connector.

[0188] As an example, the transmit power value of the first PRDCH is the transmit power value of the baseband of the first PRDCH.

[0189] As an example, the transmit power value of the first PRDCH is the transmit power value of the first PRDCH at radio frequency.

[0190] As an example, the transmit power value of the first PRDCH does not include antenna gain.

[0191] As an example, the transmit power value of the first PRDCH includes the antenna gain.

[0192] As an example, the transmit power value of the first PRDCH corresponds to P PRDCH .

[0193] As an example, the transmit power value of the first PRDCH is the average power of the OOK used by the first PRDCH at all constellation points.

[0194] As an example, the transmit power value of the first PRDCH is the average of the high-level power and low-level power of the OOK used by the first PRDCH.

[0195] As an example, the transmit power value of the first PRDCH is half of the high-level power of the OOK used by the first PRDCH.

[0196] As an example, the transmit power value of the first PRDCH is the normalized transmit power value of the first PRDCH.

[0197] As an example, the transmit power value of the first PRDCH is the average of the energy levels of all levels in the OOK used by the first PRDCH.

[0198] As an example, the maximum output power value corresponds to P CMAX The value of .

[0199] As an example, the maximum output power value is the P value corresponding to the first PRDCH. CMAX,f,c The value of (i).

[0200] As an example, the maximum output power value is equal to the P corresponding to the first PRDCH. CMAX,f,c (i) is the difference between an offset value and an offset value.

[0201] As an example, the unit of the maximum output power value is dBm (millidecibels).

[0202] As an example, the unit of the maximum output power value is watts or milliwatts.

[0203] As an example, the maximum output power value is configured per carrier.

[0204] As an example, the maximum output power value is configured per cell.

[0205] As an example, the maximum output power value is the maximum output power allowed per carrier.

[0206] As an example, the maximum output power value is the configured maximum output power of the terminal.

[0207] As an example, the maximum output power value is the maximum output power (UE configured maximum output power) configured by the terminal for the first PRDCH.

[0208] As an example, the maximum output power value is the value of the user-configured maximum output power (UEconfigured maximum output power).

[0209] As an example, the maximum output power value is the difference between the maximum output power configured in the terminal and an offset value.

[0210] As an example, the maximum output power value is the maximum output power (UE configured maximum output power) P of the terminal in the PRDCH transmission occasion i of the carrier f of the serving cell c. CMAX,f,c (i).

[0211] As an example, the maximum output power value is the maximum output power value configured for the R2D of the terminal.

[0212] As an example, the maximum output power value is within a certain range.

[0213] As an example, the range of the maximum output power value is a closed interval.

[0214] As an example, the maximum output power value is configured by the terminal itself within the range of the maximum output power value.

[0215] As an example, the maximum output power value may be greater than the first transmission power value, less than the first transmission power value, or equal to the first transmission power value.

[0216] As an example, the unit of the first transmit power value is dBm (millidecibels).

[0217] As an example, the unit of the first transmit power value is watts or milliwatts.

[0218] As an example, the first transmit power value is a variable or expression used to calculate the transmit power value of the first PRDCH.

[0219] As an example, the first transmit power value is the transmit power value of the first PRDCH of the terminal when there is no maximum output power limit.

[0220] As an example, the first transmit power value is the transmit power value calculated by open-loop power control when transmitting the first PRDCH.

[0221] As an example, the first transmit power value corresponds to P PRDCH .

[0222] As an example, the first transmit power value is the P value corresponding to the first PRDCH. PRDCH The value of (i).

[0223] As an example, the first transmit power value is the transmit power value of the first PRDCH that the terminal expects when there is no maximum output power and no reference uplink power limit.

[0224] As an example, the first transmit power value is the P corresponding to the first PRDCH when there is no reference uplink power limitation. PRDCH The value of (i).

[0225] As an example, the first transmit power value is determined by the number of RBs occupied by the first PRDCH, the target receive power value, and the path loss.

[0226] As an example, the first transmit power value is calculated using the number of RBs occupied by the first PRDCH, the target receive power value, the path compensation factor, and the path loss.

[0227] As an example, the first transmit power value is min(P) PRDCH，D (i), P PRDcH (i)), where min() represents the result of taking the minimum value, P PRDCH,D (i) is the transmit power value obtained from the power control of the virtual (or reference) uplink signal, P PRDCH (i) is the assumed transmit power value of the first PRDCH calculated by the terminal.

[0228] As an example, the sender of the first PRDCH is the terminal.

[0229] As an example, the power class of the transmitter of the first PRDCH is the maximum power set at the factory of the transmitter of the first PRDCH.

[0230] As an example, the power level of the sender of the first PRDCH includes a tolerance range.

[0231] As an example, the power level of the sender of the first PRDCH does not include tolerance range.

[0232] As an example, "the maximum output power value depends on the power class of the transmitter of the first PRDCH" includes: the range of the maximum output power value depends on the power class of the transmitter of the first PRDCH.

[0233] As one example, "the maximum output power value depends on the power level of the transmitter of the first PRDCH" includes: the power level of the transmitter of the first PRDCH is used to determine the range of values ​​for the maximum output power value.

[0234] As one example, "the maximum output power value depends on the power level of the transmitter of the first PRDCH" includes: different power levels of the transmitter of the first PRDCH correspond to different ranges of the maximum output power value.

[0235] As one example, "the maximum output power value depends on the power level of the transmitter of the first PRDCH" includes: the transmitter of the first PRDCH determines the range of the maximum output power value according to different predefined tables corresponding to different power levels.

[0236] As an example, "the maximum output power value depends on the power level of the transmitter of the first PRDCH" includes: the range of the maximum output power value depends on multiple parameters, and different power levels of the transmitter of the first PRDCH correspond to different predefined tables used to determine at least one of the multiple parameters.

[0237] As one example, "the maximum output power value depends on the power level of the transmitter of the first PRDCH" includes: the maximum output power is P CMAX,f，c P CMAX_L，f，c ≤P CMAX,f，c ≤P CMAX_H，f，c ,in

[0238] P CMAX_L，f，c =MIN{P EMAX,c -ΔT C，c , (P PowerClass -ΔP PowerClass )-MAX(MAX(MPR c +ΔMPR c A-MPR c )+ΔT IB，c +ΔT C，c +ΔT RxSRS P-MPRc )},

[0239] P CMAXH，f，c =MIN{P EMAX,c P PowerClass -ΔP PowerClass},

[0240] P EMAX,c The value indicated by the high-level parameter, P PowerClass It is the maximum terminal power, obtained according to a predefined table per band per power level, ΔP PowerClass It is the offset of the maximum terminal power, which depends on user capabilities, network-side configuration, number of symbols transmitted uplink, power level of the sender of the first PRDCH, modulation scheme, waveform, etc., ΔT IB，c It is the additional tolerance of the serving cell, ΔT C，c It is the power lower limit offset, MPR c It is the maximum power reduction (A-MPR). c It is the additional maximum allowable power reduction, ΔMPR c It is the maximum power reduction offset, ΔT RxSRS It is the offset during SRS transmission, and it is the power management maximum power reduction. At least one of these parameters depends on the power level of the sender of the first PRDCH.

[0241] As an example, the maximum output power value also depends on the operating band number to which the frequency band occupied by the first PRDCH belongs.

[0242] As an example, the maximum output power value also depends on the position of the frequency domain resources occupied by the first PRDCH in the maximum transmission bandwidth.

[0243] As an example, the maximum output power value also depends on the capability of the transmitter of the first PRDCH.

[0244] As an example, the maximum output power value also depends on the configuration of higher-level parameters.

[0245] As an example, the maximum output power value also depends on the configuration of the first information block.

[0246] As an example, the unit of the target power control parameter value is dBm (millidecibels).

[0247] As an example, the unit of the target power control parameter value is watts or milliwatts.

[0248] As an example, the target power control parameter value is the value of one of the parameters used to calculate the first transmit power value.

[0249] As an example, the target power control parameter value is an open-loop power control parameter value.

[0250] As an example, the target power control parameter value is the target received power value of the first PRDCH.

[0251] As an example, the target power control parameter value is the target transmit power value of the first PRDCH.

[0252] As an example, the target power control parameter value is the path loss compensation factor α of the first PRDCH.

[0253] As an example, the target power control parameter value is the target received power P0 value of the first PRDCH.

[0254] As an example, the target power control parameter value is a power offset of the first PRDCH.

[0255] As an example, the target power control parameter value is the power value of the path loss compensation of the first PRDCH.

[0256] As one example, "the first transmit power value depends on the target power control parameter value" includes: the first transmit power value is related to the target power control parameter value.

[0257] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is used to determine the first transmit power value.

[0258] As one example, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is used to calculate the first transmit power value.

[0259] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is used by the terminal to calculate or determine the first transmit power value.

[0260] As one example, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is a parameter used to calculate the first transmit power value.

[0261] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is an open-loop power control parameter used to calculate the first transmit power value.

[0262] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is calculated based on the first transmit power value P. PRDCH One of the parameters of (i).

[0263] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is the target receive power P used to calculate the first transmit power value. O The value of .

[0264] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is the value of the path loss compensation factor α used to calculate the first transmit power value.

[0265] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the target power control parameter value is the power offset value P used to calculate the first transmit power value. offset .

[0266] As one example, "the first transmit power value depends on the target power control parameter value" includes: the first transmit power value is linearly related to the target power control parameter value.

[0267] As one example, "the first transmit power value depends on the target power control parameter value" includes: the first transmit power value is linearly correlated with the logarithmic value of the target power control parameter value.

[0268] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the first transmit power value is P PRDCH (i), P O The target received power P0 value, Let μ be the number of resource blocks (RBs) occupied by the first PRDCH during transmission time i, μ represent the subcarrier spacing of the subcarriers included in the first PRDCH in the frequency domain, α be the path loss compensation factor, PL be the path loss, and the target power control parameter value be P. O Or one of α.

[0269] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the first transmit power value is P PRDCH (i), P PRDCH (i)=PO +α·PL dBm,P O Let P0 be the target received power, α be the path loss compensation factor, PL be the path loss, and P be the target power control parameter value. O Or α.

[0270] As one embodiment, "the first transmit power value is linearly related to the third power value" includes: the first transmit power value is P PRDCH (i), P PRDCH (i)=P O +α·PL+P offset P O Let P be the target received power P0, and α be the path loss compensation factor. offset The target power control parameter value is given.

[0271] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the first transmit power value is min(P) PRDCH，D (i), P PRDCH (i)), where min() represents the result of taking the minimum value, P PRDCH,D (i) is the transmit power value obtained from the power control of the virtual (or reference) uplink signal, P PRDCH (i) depends on the target power control parameter value.

[0272] As one embodiment, "the first transmit power value depends on the target power control parameter value" includes: the first transmit power value is min(P) PRDCH,D (i), P PRDCH (i)), where min() represents the result of taking the minimum value, P PRDCH,D (i) is the transmit power value obtained from the power control of the virtual (or reference) uplink signal, P PRDCH (i) It is linearly related to the target power control parameter value.

[0273] As an example, "the target power control parameter value is equal to one of the first power control parameter value or the second power control parameter value" includes: the target power control parameter value is equal to the first parameter value or the second power control parameter value.

[0274] As an example, "the target power control parameter value is equal to one of the first power control parameter value or the second power control parameter value" includes: the target power control parameter value is equal to one of the first parameter value or the second power control parameter value.

[0275] As an example, "the target power control parameter value is equal to one of the first power control parameter value or the second power control parameter value" includes: the first power control parameter value and the second power control parameter value are two candidate values ​​of the target power control parameter value.

[0276] As an example, the messages carried by the first PRDCH include physical layer messages.

[0277] As an example, the message carried by the first PRDCH includes MAC layer information.

[0278] As an example, the message carried by the first PRDCH includes a MAC layer PDU.

[0279] As an example, the message carried by the first PRDCH includes MAC CE (control element).

[0280] As an example, the messages carried by the first PRDCH include higher-level messages.

[0281] As an example, the order of the messages carried by the first PRDCH in the IoT access process includes: whether the message carried by the first PRDCH is message 0 (Msg0) or message 2 (Msg2) in the IoT access process.

[0282] As an example, the order of the messages carried by the first PRDCH in the IoT access process includes: whether the message carried by the first PRDCH is a paging message or message 2 in the IoT access process.

[0283] As an example, the order of the messages carried by the first PRDCH in the IoT access process includes whether the messages carried by the first PRDCH include paging messages or random access response messages in the IoT access process.

[0284] As an example, the order of the messages carried by the first PRDCH in the IoT access process includes: the index of the step to which the messages carried by the first PRDCH belong in the IoT access process.

[0285] As an example, the order of the messages carried by the first PRDCH in the IoT access process includes: the message carried by the first PRDCH is either a message that triggers the IoT access process or a message in the IoT access process.

[0286] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the target power control parameter value is related to the order of the messages carried by the first PRDCH in the IoT access process.

[0287] As one embodiment, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the order of the messages carried by the first PRDCH in the IoT access process is used to determine the target power control parameter value.

[0288] As one embodiment, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the order of the messages carried by the first PRDCH in the IoT access process is used by the terminal to determine the target power control parameter value.

[0289] As one example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the target power control parameter value has different parameter values ​​depending on the order of the messages carried by the first PRDCH in the IoT access process.

[0290] As one embodiment, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the first information block configures different values ​​for the target power control parameter value according to the order of the messages carried by the first PRDCH in the IoT access process.

[0291] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the first information block configures the first power control parameter value and the second power control parameter value for the target power control parameter value according to the order of the messages carried by the first PRDCH in the IoT access process.

[0292] As an example, "the target power control parameter value depends on the order of messages carried by the first PRDCH in the IoT access process" includes: the target power control parameter value is equal to the first power control parameter value or the second power control parameter value depends on the order of messages carried by the first PRDCH in the IoT access process.

[0293] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the target power control parameter value and the order of the messages carried by the first PRDCH in the IoT access process have a corresponding relationship or a mapping relationship.

[0294] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: the target power control parameter value is equal to the first power control parameter value or the second power control parameter value has a one-to-one correspondence with whether the message carried by the first PRDCH is a paging message or message 2 (Msg2) in the IoT access process.

[0295] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: when the message carried by the first PRDCH is a paging message (or Msg0) in the IoT access process, the target power control parameter value is equal to one of the first power control parameter value and the second power control parameter value; when the message carried by the first PRDCH is Msg2 in the IoT access process, the target power control parameter value is equal to the other of the first power control parameter value and the second power control parameter value.

[0296] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: when the messages carried by the first PRDCH are used to trigger the IoT access process, the target power control parameter value is equal to the first power control parameter value; when the messages carried by the first PRDCH belong to the messages in the IoT access process, the target power control parameter value is equal to the second power control parameter value.

[0297] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: when the message carried by the first PRDCH is a paging message (or Msg0), the target power control parameter value is equal to the first power control parameter value; when the message carried by the first PRDCH is Msg2 in the IoT access process, the target power control parameter value is equal to the second power control parameter value.

[0298] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: when the message carried by the first PRDCH is a paging message (or Msg0) in the IoT access process, the target power control parameter value is equal to the second power control parameter value; when the message carried by the first PRDCH is Msg2 in the IoT access process, the target power control parameter value is equal to the first power control parameter value.

[0299] As an example, "the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process" includes: when the messages carried by the first PRDCH belong to the access process initialization step of the IoT access process, the target power control parameter value is equal to the first power control parameter value; when the messages carried by the first PRDCH belong to the random access response step of the IoT access process, the target power control parameter value is equal to the second power control parameter value.

[0300] Example 2

[0301] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in the attached diagram. Figure 2 As shown. (Attached) Figure 2This diagram illustrates the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. 5GS / EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, 5GS / EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR / Evolved Node B (gNB / eNB) 203 and other gNBs (eNBs) 204. gNBs (eNBs) 203 provide user and control plane protocol termination to UE 201. gNBs (eNBs) 203 can connect to other gNBs (eNBs) 204 via Xn / X2 interfaces (e.g., backhaul). gNBs (eNBs) 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP (Transmitter Receiver Node), or some other suitable terminology. gNBs (eNBs) 203 provide UE 201 with an access point to the 5GC / EPC 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, test equipment, test instruments, test tools, or any other similar functional devices.Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB (eNB)203 connects to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function)211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function)212, and P-GW (Packet Data Network Gateway) / UPF213. The MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​Essentially, the MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF212, which is itself connected to the P-GW / UPF213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-compliant Internet Protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0302] As an example, the UE201 corresponds to the device of the terminal described in this application.

[0303] As an example, the UE201 supports OOK.

[0304] As an example, Device241 corresponds to the IoT device described in this application.

[0305] Example 3

[0306] Example 3 illustrates a schematic diagram of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application, as shown in the attached diagram. Figure 3 As shown. Figure 3This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 used by terminals, base stations, and IoT devices is illustrated in three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. L1 layer will be referred to as PHY301 in this document. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the terminal and the base station via PHY301. L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the base station or IoT device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets, and provides cross-regional mobility support between base stations and between IoT devices. RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between the logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among terminals. MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the base station and the terminals. The radio protocol architecture of user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). The radio protocol architecture for terminals, base stations, and IoT devices in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for Physical Layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355, and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. L2 layer 355 in user plane 350 also includes SDAP (Service Data Adaptation Protocol) sublayer 356. SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support service diversity.Although not illustrated, the terminal may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., remote UE, server, etc.).

[0307] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the terminal described in this application.

[0308] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the IoT devices described in this application.

[0309] As an example, the first information block in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0310] As an example, the first PRDCH in this application is generated in MAC302, or MAC352, or PHY301, or PHY351.

[0311] As an example, the first PDRCH in this application is generated in MAC302, or MAC352, or PHY301, or PHY351.

[0312] Example 4

[0313] Example 4 illustrates a schematic diagram of a terminal and an Internet of Things (IoT) device according to an embodiment of this application, as shown in the attached diagram. Figure 4 As shown.

[0314] The terminal (410) may include a controller / processor 440, a memory 430, a receiver processor 412, a transmitter / receiver 416 and a transmitter processor 415, the transmitter / receiver 416 including an antenna 420.

[0315] The Internet of Things device (450) may include a controller / processor 490 (if supported), a memory 480, a receiver processor 452, a transmitter / receiver 456 and a transmitter processor 455, the transmitter / receiver 456 including an antenna 460.

[0316] In the transmission from the terminal to the IoT device, upper-layer packets are provided to the controller / processor 440. The controller / processor 440 implements functions of Layer 2 and above. The controller / processor 440 provides packet header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation based on various priority metrics. The controller / processor 440 is also responsible for HARQ operation, retransmission of lost packets (if supported), and higher-layer signaling to the IoT device 450. The higher-layer information carried by the first PRDCH in this application is generated in the controller / processor 440. The transmit processor 415 implements various signal processing functions for Layer 1 (i.e., physical layer), including encoding, interleaving, scrambling, modulation, power control / allocation, precoding, and physical layer control signaling generation, such as the first PRDCH in this application, which is performed in the transmit processor 415. The generated modulation symbols are divided into parallel streams, and each stream is mapped to a corresponding multicarrier subcarrier and / or multicarrier symbol. These are then transmitted by the transmit processor 415 via the transmitter 416 to the antenna 420 as radio frequency (RF) signals. At the receiver, each receiver 456 receives the RF signal through its corresponding antenna 460. Each receiver 456 recovers the baseband information modulated onto the RF carrier (if baseband processing is supported) and provides this baseband information to the receive processor 452. The receive processor 452 implements various signal reception and processing functions of the L1 layer. The signal reception and processing function includes receiving the first PRDCH in this application, performing various modulation schemes (e.g., On-Off Keying (OOK), Binary Phase Shift Keying (BPSK), followed by descrambling, decoding, and deinterleaving (if supported) to recover the data or control signals transmitted by terminal 410 on the physical channel, and then providing the data and control signals to controller / processor 490 (if supported by the IoT device). Controller / processor 490 is responsible for Layer 2 and above, and interprets higher-layer information, including the higher-layer information carried by the first PRDCH in this application. The controller / processor may be associated with a memory 480 that stores program code and data. Memory 480 may be referred to as computer-readable media.

[0317] In the transmission from IoT devices to terminals, similar to the transmission from terminals to IoT devices, the higher-layer information carried by the first PDRCH, after being generated by the controller / processor 490 (if supported by the IoT device), is processed by the transmitter processor 455 to perform various signal transmission processing functions for the L1 layer (i.e., physical layer). The transmitter processor 455, including the physical layer signal of the first PDRCH, is mapped to the antenna 460 via the transmitter 456 and transmitted as a radio frequency signal. The receiver 416 receives the radio frequency signal through its corresponding antenna 420. Each receiver 416 recovers the baseband information modulated onto the radio frequency carrier and provides the baseband information to the receiver processor 412. The receiver processor 412 performs various signal reception processing functions for the L1 layer (i.e., physical layer) and then provides data and / or control signals to the controller / processor 440. The controller / processor 440 performs L2 layer functions, including interpreting the higher-layer information. The controller / processor may be associated with a memory 430 that stores program code and data. The memory 430 may be a computer-readable medium.

[0318] As one embodiment, the terminal 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, the terminal at least: receiving a first information block, the first information block indicating a first power control parameter value and a second power control parameter value; transmitting a first PRDCH, the first PRDCH using OOK; wherein, the first PRDCH is used in the IoT access process; the transmit power value of the first PRDCH is equal to the smaller value between a maximum output power value and a first transmit power value, the maximum output power value depending on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, the target power control parameter value being equal to either the first power control parameter value or the second power control parameter value, the target power control parameter value depending on the order of the messages carried by the first PRDCH in the IoT access process.

[0319] As one embodiment, the terminal 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving a first information block indicating a first power control parameter value and a second power control parameter value; transmitting a first PRDCH using OOK; wherein the first PRDCH is used in an IoT access process; the transmit power value of the first PRDCH is equal to the smaller of a maximum output power value and a first transmit power value, the maximum output power value depending on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, the target power control parameter value being equal to either the first power control parameter value or the second power control parameter value, the target power control parameter value depending on the order of messages carried by the first PRDCH in the IoT access process.

[0320] As one embodiment, the IoT device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The IoT device 450 at least: receives a first PRDCH, the first PRDCH using OOK; wherein the sender of the first PRDCH receives a first information block, the first information block indicating a first power control parameter value and a second power control parameter value; the first PRDCH is used in an IoT access process; the transmit power value of the first PRDCH is equal to the smaller of a maximum output power value and a first transmit power value, the maximum output power value depending on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, the target power control parameter value being equal to either the first power control parameter value or the second power control parameter value, the target power control parameter value depending on the order of messages carried by the first PRDCH in the IoT access process.

[0321] As one embodiment, the IoT device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving a first PRDCH, the first PRDCH using OOK; wherein the sender of the first PRDCH receives a first information block, the first information block indicating a first power control parameter value and a second power control parameter value; the first PRDCH is used in an IoT access process; the transmit power value of the first PRDCH is equal to the smaller of a maximum output power value and a first transmit power value, the maximum output power value depending on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, the target power control parameter value being equal to either the first power control parameter value or the second power control parameter value, the target power control parameter value depending on the order of messages carried by the first PRDCH in the IoT access process.

[0322] As an example, the terminal 410 is a user equipment (UE).

[0323] As an example, the IoT device 450 is an environmental IoT device.

[0324] As an example, the Internet of Things device 450 is an RFID device.

[0325] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 415 and controller / processor 440 are used to transmit the first PRDCH in this application.

[0326] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the first PDRCH in this application.

[0327] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the first information block in this application.

[0328] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used to receive the first PRDCH in this application.

[0329] As one embodiment, transmitter 456 (including antenna 460), transmitter processor 452 and controller / processor 490 are used to transmit the first PDRCH in this application.

[0330] Example 5

[0331] Example 5 illustrates a flowchart of transmission between a terminal and an IoT device according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. In the appendix Figure 5 In this example, base station N500 is the sustaining base station for the serving cell of terminal U550, and terminal U550 is the reader device of IoT device D580. It should be noted that the order in this example does not limit the signal transmission order or the order of implementation in this application.

[0332] for IoT device D500 In step S501, the first PRDCH is received, and in step S502, the first PDRCH is sent.

[0333] for Terminal U550 In step S551, the first information block is received; in step S552, the first PRDCH is sent; and in step S553, the first PDRCH is received.

[0334] In embodiment 5, the first information block indicates the first power control parameter value and the second power control parameter value; the first PRDCH uses OOK;

[0335] In this application, the first PRDCH is used in the IoT access process. The transmit power value of the first PRDCH is equal to the smaller of a maximum output power value and a first transmit power value, where the maximum output power value depends on the power level of the sender of the first PRDCH. The first transmit power value depends on a target power control parameter value, which is equal to either the first power control parameter value or the second power control parameter value, and the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process. The first PRDCH carries Msg1. The first path loss in this application is calculated based on the received power when the terminal receives the preamble of the first PRDCH.

[0336] Example 6

[0337] Example 6 illustrates a schematic diagram of the relationship between the first PDRCH and the target power control parameter value according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown. In the appendix Figure 6 In the diagram, the arrows indicate the corresponding relationships: when the first PRDCH carries a paging message, the target power control parameter value is equal to the first power control parameter value; when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

[0338] In Example 6, when the first PRDCH carries paging information, the target power control parameter value is equal to the first power control parameter value; when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

[0339] As an example, the PRDCH carrying the paging message and the PRDCH carrying Msg2 use different transmit power parameters, taking into account that their target receive power or broadcast type may be different, thus optimizing power control during the access process and making it more flexible.

[0340] As one embodiment, the first PRDCH carrying paging information includes: the first PRDCH carrying Msg0.

[0341] As one embodiment, the first PRDCH carrying paging information includes: the first PRDCH is used to trigger the random access procedure in this application.

[0342] As one embodiment, the first PRDCH carrying paging information includes: the first PRDCH is a paging PRDCH.

[0343] As one embodiment, the first PRDCH carrying paging information includes: the first PRDCH carrying paging information of A-IoT devices.

[0344] As one embodiment, the first PRDCH carrying paging information includes: the first PRDCH is the initial transmission or retransmission of a paging message (or Msg0).

[0345] As an example, the paging information carried by the first PRDCH includes a device ID of an A-IoT device.

[0346] As an example, the paging information carried by the first PRDCH includes a group identifier, which corresponds to multiple A-IoT devices.

[0347] As one example, the paging information carried by the first PRDCH includes the identifiers of multiple A-IoT devices.

[0348] As an example, the paging message carried by the first PRDCH is the MAC layer information carried by the first PRDCH.

[0349] As an example, the paging message carried by the first PRDCH is the MAC layer PDU carried by the first PRDCH.

[0350] As an example, the paging message carried by the first PRDCH is the MAC CE (control element) carried by the first PRDCH.

[0351] As an example, the paging message carried by the first PRDCH includes messages from the core network.

[0352] As an example, the paging message carried by the first PRDCH includes messages from the NAS (Non-Access Stratum).

[0353] As an example, the paging message carried by the first PRDCH includes a wake-up message.

[0354] As one embodiment, the first PRDCH carrying Msg2 includes: the first PRDCH is a PRDCH transmission of Msg2.

[0355] As one embodiment, the first PRDCH carrying Msg2 includes: the first PRDCH includes Msg2.

[0356] As one embodiment, the first PRDCH carrying Msg2 includes: Msg2 being transmitted on the first PRDCH.

[0357] As one embodiment, the first PRDCH carrying Msg2 includes: Msg2 being used to generate the first PRDCH.

[0358] As one embodiment, the first PRDCH carrying Msg2 includes: the first PRDCH being the initial transmission or retransmission of Msg2.

[0359] As an example, the Msg2 carried by the first PRDCH includes at least one ID (Identification).

[0360] As an example, the Msg2 carried by the first PRDCH includes at least one ID randomly generated by the IoT device in this application.

[0361] As an example, the Msg2 carried by the first PRDCH includes at least one ID of fixed bit size.

[0362] As an example, the Msg2 carried by the first PRDCH includes some or all of the information in Msg1.

[0363] As an example, the first PRDCH carries Msg2 which echoes some or all of the information in Msg1.

[0364] As an example, the Msg2 carried by the first PRDCH includes the ID carried by Msg1.

[0365] As an example, the Msg2 carried by the first PRDCH returns the ID carried by Msg1.

[0366] As an example, Msg2 carried by the first PRDCH is the MAC layer information carried by the first PRDCH.

[0367] As an example, Msg2 carried by the first PRDCH is the MAC layer PDU (Protocol Data Unit) carried by the first PRDCH.

[0368] As an example, Msg2 carried by the first PRDCH is the MAC CE (control element) carried by the first PRDCH.

[0369] Example 7

[0370] Example 7 illustrates a schematic diagram of downlink path loss and first path loss according to an embodiment of this application, as shown in the attached diagram. Figure 7 As shown. In the appendix Figure 7 In this context, the path loss from the base station to the terminal is the downlink path loss, and the path loss between the terminal and the IoT device is the first path loss.

[0371] In Embodiment 7, when the first PRDCH carries a paging message, the first transmit power value depends on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value depends on the first path loss, which is the path loss between the terminal and the receiver of the first PRDCH.

[0372] As an example, when the terminal sends a paging message to the IoT device in this application, the downlink path loss is used as a reference; when the terminal sends Msg2, since Msg1 has already been received, the path loss between the terminal and the IoT device is used. This is compatible with existing standards and increases the probability of successful transmission.

[0373] As an example, when the first PRDCH carries a paging message, the first transmit power value is a transmit power value calculated based on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value is calculated based on the path loss between the terminal and the reader device in this application.

[0374] As an example, the downlink path loss is a downlink path loss (PL) estimate.

[0375] As an example, the downlink path loss is measured in dB.

[0376] As an example, the downlink path loss corresponds to PL D .

[0377] As an example, the downlink path loss corresponds to PL b，f，c (q d ).

[0378] As an example, the downlink path loss is calculated by the terminal using a reference signal (RS).

[0379] As an example, the downlink path loss is calculated by the terminal using a reference signal in the active downlink BWP.

[0380] As an example, the downlink path loss is calculated by the terminal based on the received power of CSI-RS (Channel State Information Reference Signal) or SSB (Synchronization Signal Block).

[0381] As an example, the downlink path loss is equal to the difference between the RSRP (Reference Signal Received Power) value measured by the terminal for a reference signal resource and the transmit power value of the reference signal.

[0382] As an example, the downlink path loss is equal to the ratio between the RSRP (Reference Signal Received Power) value measured by the terminal for a reference signal resource and the transmit power value of the reference signal.

[0383] As an example, the downlink path loss is PL. b，f，c (q d ), where b represents the active BWP to which the first PRDCH belongs, f represents the carrier to which the first PRDCH belongs in the frequency domain, c represents the serving cell to which the first PRDCH belongs, and PL b，f，c (q d ) is based on the reference signal index q used by the terminal.d Downlink path loss estimate calculated under active downlink BWP.

[0384] As an example, the downlink path loss is PL. b，f，c Where b represents the active BWP to which the first PRDCH belongs, f represents the carrier to which the first PRDCH belongs in the frequency domain, c represents the serving cell to which the first PRDCH belongs, and PL b，f，c It is a downlink path loss estimate calculated based on the reference signal used by the terminal in an active downlink BWP.

[0385] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value is related to the downlink path loss.

[0386] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value depends on an estimate of the downlink path loss.

[0387] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the downlink path loss is used to determine the first transmit power value.

[0388] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the downlink path loss is used to calculate the first transmit power value.

[0389] As one example, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value is positively correlated with the downlink path loss.

[0390] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value is directly proportional to the downlink path loss.

[0391] As one example, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value is linearly related to the downlink path loss.

[0392] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the smaller the downlink path loss, the smaller the first transmit power value; the greater the downlink path loss, the greater the first transmit power value.

[0393] As an example, "the first transmit power value depends on the downlink path loss" includes: given a path loss compensation factor α, the first transmit power value and the downlink path loss are linearly related.

[0394] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value is P PRDCH (i),

[0395] Among them, P O The target received power P0 value, denoted by , μ represents the number of resource blocks (RBs) occupied by the first PRDCH during transmission time i, μ represents the subcarrier spacing of the subcarriers included in the first PRDCH in the frequency domain, α is the path loss compensation factor, and PL... D This refers to the path loss for the downlink.

[0396] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value is P PRDCH (i), P PRDCH (i)=P O +α·PL D dBm, P O Let P0 be the target received power, α be the path loss compensation factor, and PL be the path loss compensation factor. D This refers to the path loss for the downlink.

[0397] As one embodiment, "the first transmit power value depends on the downlink path loss" includes: the first transmit power value is min(P) PRDCH,D (i), P PRDCH (i)), where min() represents the result of taking the minimum value, P PRDCH,D (i) is the transmit power value obtained from the power control of the virtual (or reference) uplink signal, P PRDCH (i) Depends on the path loss of the downlink.

[0398] As an example, the first path loss is an estimate of the path loss (PL) between the terminal and the IoT device described in this application.

[0399] As an example, the unit of the first path loss is dB.

[0400] As an example, the first path loss corresponds to PL D2R .

[0401] As an example, the first path loss corresponds to PL R2D .

[0402] As an example, the first path loss corresponds to PL PDRCH .

[0403] As an example, the first path loss is calculated by the terminal described in this application.

[0404] As an example, the first path loss is calculated by the terminal using PDRCH.

[0405] As an example, the first path loss is calculated by the terminal based on the preamble of the PDRCH.

[0406] As an example, the first path loss is calculated by the terminal based on the back-reflected CW (carrier wave).

[0407] As an example, the first path loss is calculated by the terminal based on the received power of the PDRCH.

[0408] As an example, the first path loss is calculated by the terminal based on the received power of the back-reflected CW (carrier wave).

[0409] As an example, the first path loss is calculated by the terminal based on the RSRP (Reference Signal Received Power) value of the PDRCH preamble.

[0410] As an example, the calculation of the first path loss depends on the device type of the IoT device in this application.

[0411] Example 8

[0412] Example 8 illustrates a schematic diagram of the relationship between the first PDRCH and the preamble of the first PDRCH according to an embodiment of this application, as shown in the attached diagram. Figure 8 As shown. In the appendix Figure 8 In the diagram, the horizontal axis represents time, the blank-filled rectangle represents the first PDRCH, the cross-filled rectangle represents the leader of the first PDRCH, and the leader of the first PDRCH is earlier than the first PDRCH.

[0413] In embodiment 8, the first PDRCH in this application carries Msg1; wherein, the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH.

[0414] As an example, using the preamble of the first PDRCH to obtain the path loss between the terminal and the IoT device in this application is beneficial for the terminal to compensate for the transmit power value based on the path loss, thereby controlling interference to other links and increasing the probability of successful transmission.

[0415] As an example, the first PDRCH is a baseband signal or radio frequency signal of the PDRCH (Physical Device to Reader Channel).

[0416] As one example, the first PDRCH is transmitted from the IoT device to the reader.

[0417] As an example, the first PDRCH carries physical layer control information.

[0418] As an example, the first PDRCH does not carry physical layer control information.

[0419] As an example, the first PDRCH carries control information only from higher layers.

[0420] As an example, the first PDRCH carries all or part of the bits in a TB (transport block).

[0421] As an example, all or part of the bits in a TB are used to generate the first PDRCH.

[0422] As an example, the first PDRCH carries information for the IoT access process in this application.

[0423] As an example, the first PDRCH is a signal that includes only high and low levels.

[0424] As an example, the first PDRCH uses OOK.

[0425] As an example, the first PDRCH uses BPSK.

[0426] As an example, the first PDRCH uses MSK.

[0427] As an example, the sender of the first PDRCH is the IoT device described in this application.

[0428] As an example, the first PDRCH is the backscatter signal of the carrier.

[0429] As an example, the first PDRCH is the carrier signal back-reflected by the IoT device in this application.

[0430] As an example, the first PDRCH is a signal generated by the IoT device in this application.

[0431] As one embodiment, "the first PDRCH carrying Msg1" includes: the first PDRCH is a PDRCH transmission of Msg1.

[0432] As one embodiment, "the first PDRCH carries Msg1" includes: Msg1 is transmitted on the first PDRCH.

[0433] As one embodiment, "the first PDRCH carries Msg1" includes: the first PDRCH includes Msg1.

[0434] As one example, "the first PDRCH carries Msg1" includes: Msg1 is used to generate the first PDRCH.

[0435] As an example, the Msg1 carried by the first PDRCH includes an ID (Identification).

[0436] As an example, the Msg1 carried by the first PDRCH includes a randomly generated ID.

[0437] As an example, the Msg1 carried by the first PDRCH includes an ID of a fixed bit size.

[0438] As an example, the Msg1 carried by the first PDRCH includes an ID with a fixed size of 16 bits.

[0439] As an example, the Msg1 carried by the first PDRCH includes a device identifier of the sender of the first PDRCH.

[0440] As an example, Msg1 carried by the first PDRCH is the MAC layer information carried by the first PDRCH.

[0441] As an example, Msg1 carried by the first PDRCH is the MAC layer PDU carried by the first PDRCH.

[0442] As an example, Msg1 carried by the first PDRCH is the MAC CE (control element) carried by the first PDRCH.

[0443] As an example, the first PDRCH does not include the preamble of the first PDRCH.

[0444] As an example, the leader of the first PDRCH is not part of the first PDRCH.

[0445] As an example, the preamble of the first PDRCH is earlier than the first PDRCH in the time domain.

[0446] As an example, the preamble of the first PDRCH includes a timing acquisition signal.

[0447] As an example, the preamble of the first PDRCH is used for timing acquisition.

[0448] As an example, the leader of the first PDRCH is used to indicate the start of the first PDRCH.

[0449] As an example, the preamble of the first PDRCH is used for SFO (Sampling-frequency offset) estimation.

[0450] As an example, the preamble of the first PDRCH is used for CFO (Carrier-frequency offset) estimation.

[0451] As an example, the preamble of the first PDRCH is used for channel estimation.

[0452] As an example, the preamble of the first PDRCH is used for interference estimation.

[0453] As an example, the preamble of the first PDRCH is the carrier signal back-reflected by the IoT device in this application.

[0454] As an example, the preamble of the first PDRCH is a signal generated by the IoT device in this application.

[0455] As an example, the preamble of the first PDRCH includes only high and low level signals.

[0456] As an example, the first PDRCH uses OOK as its leading term.

[0457] As an example, the leader of the first PDRCH is BPSK.

[0458] As an example, the leading edge of the first PDRCH is MSK.

[0459] As one embodiment, "the first path loss is calculated based on the received power of the terminal when receiving the preamble of the first PDRCH" includes: the calculation of the first path loss depends on the received power of the terminal when receiving the preamble of the first PDRCH.

[0460] As one embodiment, "the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH" includes: the received power when the terminal receives the preamble of the first PDRCH is used to determine the first path loss.

[0461] As one embodiment, "the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH" includes: the received power when the terminal receives the preamble of the first PDRCH is used by the terminal to calculate the first path loss.

[0462] As one embodiment, "the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH" includes: the first path loss is linearly related to the received power when the terminal receives the preamble of the first PDRCH.

[0463] As one embodiment, "the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH" includes: the first path loss is linearly correlated with the logarithmic value of the received power when the terminal receives the preamble of the first PDRCH.

[0464] As one embodiment, "the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH" includes: the value of the first path loss depends on the difference between the transmit power value of the first PDRCH and the received power when the terminal receives the preamble of the first PDRCH.

[0465] As one embodiment, "the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH" includes: the value of the first path loss is equal to the difference between the transmit power value of the first PDRCH and the received power when the terminal receives the preamble of the first PDRCH.

[0466] As one embodiment, "the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH" includes: the value of the first path loss depends on the difference between the carrier wave used for the back reflection of the first PDRCH and the received power when the terminal receives the preamble of the first PDRCH.

[0467] As an example, the first path loss also depends on the midamble of the first PDRCH.

[0468] As an example, the first path loss also depends on the postamble of the first PDRCH.

[0469] Example 9

[0470] Example 9 illustrates a schematic diagram illustrating the relationship between the calculation of a first path loss and the equipment type according to an embodiment of this application, as shown in the attached diagram. Figure 9 As shown. In the appendix Figure 9 In the middle, the rectangle enclosed by the thick solid line on the right represents the equipment type. Equipment types include type 1, type 2a, and type 2b. The calculation of the first path loss depends on the equipment type.

[0471] In Embodiment 9, the calculation of the first path loss depends on the device type of the receiver of the first PDRCH, the device type including at least one of type 1, type 2a and type 2b; when the device type is type 1 or type 2a, the calculation of the first path loss depends on the transmit power value of the carrier used for back reflection of the first PDRCH transmitted by the terminal; when the device type is type 2b, the calculation of the first path loss depends on the transmit power value of the first PDRCH, the transmit power value of the first PDRCH depending on the power level of the sender of the first PDRCH.

[0472] As an example, consider that device type 1 or type 2a only has a backscatter module and can only transmit signals through backscatter carriers, while device type 2b can generate signals itself. Therefore, the different hardware structures of different IoT device types are taken into account, and different device types obtain path loss in different ways, which reduces the complexity of implementation.

[0473] As an example, the device type of the receiver of the first PRDCH includes one of device 1, device 2a, and device 2b as defined in 3GPP TR38.769.

[0474] As an example, the device type of the receiver of the first PRDCH includes one of device A, device B, and device C as defined in 3GPP TR38.848.

[0475] As an example, the device type of the receiver of the first PRDCH is determined based on at least one of the following: power consumption, presence of an amplifier, and use of backscattering.

[0476] As an example, the device type of the receiver of the first PRDCH is classified according to the complexity of the device.

[0477] As an example, the device type of the receiver of the first PRDCH is determined based on the device's capabilities.

[0478] As an example, the device type of the receiver of the first PRDCH is determined based on whether it has a power amplifier.

[0479] As an example, the device type of the receiver of the first PRDCH is determined based on whether it has a battery or its capacity.

[0480] As an example, the device type of the receiver of the first PRDCH is determined based on the device receiver sensitivity.

[0481] As an example, the device type of the receiver of the first PRDCH is determined based on whether the uplink transmission is generated internally by the device or by backscattering.

[0482] As an example, the device type of the receiver of the first PRDCH depends on the indication of the core network.

[0483] As an example, the device type of the receiver of the first PRDCH depends on the signaling indication of the core network device.

[0484] As an example, the device type of the receiver of the first PRDCH is indicated by the core network.

[0485] As an example, the core network indicates the device type of the receiver of the first PRDCH that the terminal wants to communicate with.

[0486] As an example, the core network indicates the device type of the receiver of the first PRDCH based on the currently provided services.

[0487] As an example, after obtaining the device type of the IoT device based on the identifier of the IoT device related to the current service, the core network instructs the terminal on the device type of the receiver of the first PRDCH.

[0488] As an example, the device type of the receiver of the first PRDCH is indicated by NAS.

[0489] As an example, the device type of the receiver of the first PRDCH is indicated by NAS.

[0490] As an example, the device type of the receiver of the first PRDCH also includes other device types besides type 1, type 2a and type 2b.

[0491] As an example, type 1 is A-IoT device 1 as defined in 3GPP TR 38.769.

[0492] As an example, type 2a is A-IoT device 2a as defined in 3GPP TR38.769.

[0493] As an example, type 2b is A-IoT device 2b as defined in 3GPP TR38.769.

[0494] As an example, Type 1 has a peak power consumption of approximately 1 μW, energy storage, and a maximum initial sampling frequency offset (SFO) of 10. X A-IoT devices with ppm (parts per million) power output, no uplink or downlink power amplification, and whose uplink transmission is achieved through backscattering of an externally provided carrier.

[0495] As an example, type 2a has a peak power consumption of less than or equal to 100 μW, has energy storage, and a maximum initial sampling frequency offset (SFO) of 10. X A-IoT devices with ppm (parts per million) power amplification for both uplink and downlink, and whose uplink transmission is achieved through backscattering of an externally provided carrier.

[0496] As an example, type 2b has a peak power consumption of less than or equal to 100 μW, has energy storage, and a maximum initial sampling frequency offset (SFO) of 10. X ppm (Parts per million) has uplink and downlink power amplification, and the device's uplink transmission is generated internally by the A-IoT device.

[0497] As one embodiment, "the calculation of the first path loss depends on the device type of the receiver of the first PRDCH" includes: the calculation of the first path loss is related to the device type of the receiver of the first PRDCH.

[0498] As one embodiment, "the calculation of the first path loss depends on the device type of the receiver of the first PRDCH" includes: the calculation method of the first path loss is different for different device types of the receivers of the first PRDCH.

[0499] As one embodiment, "the calculation of the first path loss depends on the device type of the receiver of the first PRDCH" includes: the terminal has different methods for calculating path loss for different device types of the receivers of the first PRDCH.

[0500] As one embodiment, "the calculation of the first path loss depends on the device type of the receiver of the first PRDCH" includes: the device type of the receiver of the first PRDCH has a corresponding relationship with the calculation of the first path loss.

[0501] As one embodiment, the terminal transmits a carrier, and the receiver of the first PDRCH is the terminal, which has full-duplex capability.

[0502] As an example, the carrier wave transmitted by the terminal for the back reflection used in the first PDRCH is an unmodulated waveform.

[0503] As an example, the carrier wave transmitted by the terminal for the back reflection of the first PDRCH is a single-tone waveform.

[0504] As an example, the carrier transmitted by the terminal for back reflection used in the first PDRCH is an unmodulated single-tone sine wave.

[0505] As an example, the carrier wave transmitted by the terminal for back reflection of the first PDRCH is two single-tone waveforms.

[0506] As an example, the transmit power value of the carrier transmitted by the terminal for the back reflection of the first PDRCH is predefined.

[0507] As an example, the transmit power value of the carrier transmitted by the terminal for the back reflection of the first PDRCH is configured or pre-configured.

[0508] As an example, the transmit power value of the carrier used for the back reflection of the first PDRCH transmitted by the terminal is hardcoded in the standard.

[0509] As an example, the transmit power value of the carrier used for the back reflection of the first PRDCH transmitted by the terminal is indicated or configured by the network side.

[0510] As an example, the transmit power value of the carrier used for the back reflection of the first PRDCH transmitted by the terminal is determined by the terminal itself based on the maximum transmit power value.

[0511] As an example, the transmit power value of the carrier transmitted by the terminal for the back reflection of the first PRDCH depends on the power level of the terminal.

[0512] As an example, "the calculation of the first path loss depends on the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH" includes: the calculation of the first path loss is related to the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH.

[0513] As one embodiment, "the calculation of the first path loss depends on the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH" includes: the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH is used to calculate the first path loss.

[0514] As an example, "the calculation of the first path loss depends on the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH" includes: the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH is a parameter for calculating the first path loss.

[0515] As an example, "the calculation of the first path loss depends on the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH" includes: the first path loss is linearly related to the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH.

[0516] As an example, "the calculation of the first path loss depends on the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH" includes: the first path loss is linearly related to the logarithmic value of the transmit power value of the carrier back-reflected by the terminal used for the first PDRCH.

[0517] As an example, "the calculation of the first path loss depends on the transmit power value of the carrier used for the back reflection of the first PDRCH transmitted by the terminal" includes: the first path loss is equal to the difference between the logarithm of the transmit power value of the carrier used for the back reflection of the first PDRCH transmitted by the terminal and the logarithm of the receive power of the terminal when receiving the preamble of the first PDRCH in this application.

[0518] As an example, "the calculation of the first path loss depends on the transmit power value of the carrier used for the back reflection of the first PDRCH transmitted by the terminal" includes: the first path loss is equal to half the difference between the logarithm of the transmit power value of the carrier used for the back reflection of the first PDRCH transmitted by the terminal and the logarithm of the receive power when the terminal receives the preamble of the first PDRCH in this application.

[0519] As one embodiment, "the calculation of the first path loss depends on the transmit power value of the carrier used for backscattering in the first PDRCH transmitted by the terminal" includes: the first path loss is equal to the logarithm of the transmit power value of the carrier used for backscattering in the first PDRCH transmitted by the terminal minus the logarithm of the received power when the terminal receives the preamble of the first PDRCH, minus the logarithm of the power loss due to backscattering, and finally multiplied by 1 / 2. As a supplementary embodiment, the power value of the backscattering loss is a predefined value.

[0520] As an example, "the calculation of the first path loss depends on the transmit power value of the first PDRCH" includes: the value of the first path loss is related to the transmit power value of the first PDRCH.

[0521] As one example, "the calculation of the first path loss depends on the transmit power value of the first PDRCH" includes: the transmit power value of the first PDRCH is used for the first path loss.

[0522] As one embodiment, "the calculation of the first path loss depends on the transmit power value of the first PDRCH" includes: the transmit power value of the first PDRCH is a parameter for calculating the first path loss.

[0523] As one example, "the calculation of the first path loss depends on the transmit power value of the first PDRCH" includes: the first path loss is linearly related to the transmit power value of the first PDRCH.

[0524] As an example, "the calculation of the first path loss depends on the transmit power value of the first PDRCH" includes: the first path loss is linearly related to the logarithm of the transmit power value of the first PDRCH.

[0525] As one embodiment, "the calculation of the first path loss depends on the transmit power value of the first PDRCH" includes: the first path loss is equal to the ratio or difference between the transmit power value of the first PDRCH and the receive power of the terminal receiving the preamble of the first PDRCH in this application.

[0526] As one embodiment, "the calculation of the first path loss depends on the transmit power value of the first PDRCH" includes: the first path loss is equal to the difference between the logarithm of the transmit power value of the first PDRCH and the logarithm of the receive power when the terminal receives the preamble of the first PDRCH in this application.

[0527] As an example, the sender of the first PDRCH is the IoT device described in this application.

[0528] As an example, the sender of the first PDRCH is an RFID device.

[0529] As an example, the sender of the first PDRCH is a sensor device.

[0530] As an example, the power class of the sender of the first PDRCH is a predefined power class value.

[0531] As an example, the power level of the transmitter of the first PDRCH is the predefined maximum radio frequency power of the transmitter of the first PDRCH.

[0532] As an example, the power level of the transmitter of the first PDRCH is the maximum power set by the transmitter of the first PDRCH at the factory.

[0533] As an example, the power level of the sender of the first PDRCH includes a tolerance range.

[0534] As an example, the power level of the sender of the first PDRCH does not include tolerance range.

[0535] As one embodiment, "the transmit power value of the first PDRCH depends on the power level of the transmitter of the first PDRCH" includes: the transmit power value of the first PDRCH is related to the power level of the transmitter of the first PDRCH.

[0536] As one embodiment, "the transmit power value of the first PDRCH depends on the power level of the transmitter of the first PDRCH" includes: the power level of the transmitter of the first PDRCH is used to determine or calculate the transmit power value of the first PDRCH.

[0537] As one embodiment, "the transmit power value of the first PDRCH depends on the power level of the transmitter of the first PDRCH" includes: the transmit power value of the first PDRCH and the power value corresponding to the power level of the transmitter of the first PDRCH are linearly related.

[0538] As one embodiment, "the transmit power value of the first PDRCH depends on the power level of the transmitter of the first PDRCH" includes: the range of the transmit power value of the first PDRCH depends on the power level of the transmitter of the first PDRCH.

[0539] As one embodiment, "the transmit power value of the first PDRCH depends on the power level of the transmitter of the first PDRCH" includes: the transmit power value of the first PDRCH is equal to the smaller of a first upper limit value and a fourth power value, wherein at least one of the first upper limit value or the fourth power value depends on the power level of the transmitter of the first PDRCH.

[0540] As an example, the power level of the sender of the first PDRCH is hardware-implemented.

[0541] As an example, the power level of the transmitter of the first PDRCH depends on the device type.

[0542] As an example, the power level of the IoT device of type 2b is predefined.

[0543] As an example, the first PDRCH carries the transmit power value of the first PDRCH.

[0544] As an example, after determining the first PDRCH, the IoT device of type 2b notifies the terminal of the transmission power value of the first PDRCH through the first PDRCH.

[0545] Example 10

[0546] Example 10 illustrates a schematic diagram of the relationship between a first transmit power value, a first power value, and a second power value according to an embodiment of this application, as shown in the attached diagram. Figure 10 As shown. In the appendix Figure 10 In the diagram, the rectangle filled with diagonal lines on the left represents the first power value, and the rectangle filled with diagonal lines on the right represents the second power value. The first transmit power value is the smaller value compared to the first power value and the second power value.

[0547] In Example 10, the first transmit power value is equal to the smaller of the first power value and the second power value, the first power value depends on the downlink path loss, and the second power value depends on the target power control parameter value.

[0548] As an example, when determining the PRDCH transmit power, the limitations of uplink transmission are taken into account, so that the transmit power for IoT devices does not exceed the uplink transmit power, which is compatible with existing standards while reducing interference to other links.

[0549] As one embodiment, "the first transmit power value is equal to the smaller value between the first power value and the second power value" includes: the first transmit power value is the result of taking the smaller value between the first power value and the second power value.

[0550] As one embodiment, "the first transmit power value is equal to the smaller value between the first power value and the second power value" includes: when the first power value is less than the second power value, the first transmit power value is equal to the first power value; when the first power value is greater than the second power value, the first transmit power value is equal to the second power value; when the first power value is equal to the second power value, the first transmit power value is equal to the first power value or the second power value.

[0551] As an example, the unit of the first power value is dBm (millidecibels).

[0552] As an example, the unit of the first power value is watts or milliwatts.

[0553] As an example, the first power value is P PRDCH,D The value of (i).

[0554] As an example, the first power value is P PRDCH,D The value of .

[0555] As an example, the first power value is a transmit power value calculated using the number of RBs occupied by the first PRDCH, the target receive power and path loss compensation factor configured by higher-layer parameters, and the downlink path loss.

[0556] As an example, the first power value is the transmit power value calculated by the terminal based on the number of RBs occupied by the first PRDCH, the target received power P0 value and path loss compensation factor α configured by the higher layer parameters, and the downlink path loss.

[0557] As an example, the first power value is the transmit power value calculated by the terminal assuming that the first PRDCH is an uplink signal.

[0558] As an example, the first power value is a transmit power value obtained by power control of a virtual (or referenced) uplink signal.

[0559] As an example, the unit of the second power value is dBm (millidecibels).

[0560] As an example, the unit of the second power value is watts or milliwatts.

[0561] As an example, the second power value is P PRDCH The value of (i).

[0562] As an example, the second power value is P PRDCH The value of .

[0563] As an example, the second power value is determined by the number of RBs occupied by the first PRDCH and the transmit power value configured by the higher-layer parameters.

[0564] As an example, the second power value is the transmit power value calculated by the number of RBs occupied by the first PRDCH, the transmit power value configured by higher layers, the path compensation factor, and the path loss.

[0565] As an example, the second power value is the transmit power value of the first PRDCH that the terminal expects when there is no maximum output power and no reference uplink power limit.

[0566] As an example, the units of the maximum output power value, the transmit power value of the first PRDCH, the first transmit power value, the first power value, and the second power value are all the same.

[0567] As one embodiment, "the first power value depends on the downlink path loss" includes: the first power value is related to the downlink path loss.

[0568] As one embodiment, "the first power value depends on the downlink path loss" includes: the first power value depends on an estimate of the downlink path loss.

[0569] As one embodiment, "the first power value depends on downlink path loss" includes: the downlink path loss is used to determine the first power value.

[0570] As one embodiment, "the first power value depends on the downlink path loss" includes: the downlink path loss is used to calculate the first power value.

[0571] As one example, "the first power value depends on the downlink path loss" includes: the first power value is positively correlated with the downlink path loss.

[0572] As one embodiment, "the first power value depends on the downlink path loss" includes: the first power value is directly proportional to the downlink path loss.

[0573] As one example, "the first power value depends on the downlink path loss" includes: the first power value is linearly related to the downlink path loss.

[0574] As one embodiment, "the first power value depends on the downlink path loss" includes: the smaller the downlink path loss, the smaller the first power value; the greater the downlink path loss, the greater the first power value.

[0575] As one embodiment, "the first power value depends on the downlink path loss" includes: given a path loss compensation factor α, the first power value and the downlink path loss are linearly related.

[0576] As one embodiment, "the first power value depends on the downlink path loss" includes: the first power value is P PRDCH,D (i),

[0577] Among them, P O,D The P0 value for power control of PRDCH based on downlink path loss, as indicated by higher-level parameters. The first PRDCH occupies the number of resource blocks (RBs) during transmission time i, μ represents the subcarrier spacing of the subcarriers included in the first PRDCH in the frequency domain, and α represents the number of resource blocks (RBs) occupied by the first PRDCH during transmission time i. D For the α value of PRDCH power control based on downlink path loss, PL D This refers to the path loss for the downlink.

[0578] As one embodiment, "the second power value depends on the target power control parameter value" includes: the second power value is related to the target power control parameter value.

[0579] As one embodiment, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is used to determine the second power value.

[0580] As one example, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is used to calculate the second power value.

[0581] As one embodiment, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is used by the terminal to calculate or determine the second power value.

[0582] As one example, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is a parameter used to calculate the second power value.

[0583] As one embodiment, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is an open-loop power control parameter for calculating the second power value.

[0584] As one embodiment, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is the value used to calculate the second power value P. PRDCH One of the parameters of (i).

[0585] As one embodiment, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is the target received power P used to calculate the second power value. O The value of .

[0586] As one embodiment, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is the value of the path loss compensation factor α used to calculate the second power value.

[0587] As one embodiment, "the second power value depends on the target power control parameter value" includes: the target power control parameter value is the power offset value P used to calculate the second power value. offset .

[0588] As one example, "the second power value depends on the target power control parameter value" includes: the second power value is linearly related to the target power control parameter value.

[0589] As one example, "the second power value depends on the target power control parameter value" includes: the second power value is linearly correlated with the logarithmic value of the target power control parameter value.

[0590] As one embodiment, "the second power value depends on the target power control parameter value" includes: the second power value is P PRDCH (i), P O The target received power P0 value, The first PRDCH occupies the number of resource blocks (RBs) during transmission time i, μ represents the subcarrier spacing of the first PRDCH in the frequency domain, α is the path loss compensation factor, PL is the path loss, and the target power control parameter value is P. O Or one of α.

[0591] As one embodiment, "the second power value depends on the target power control parameter value" includes: the second power value is P PRDCH (i),P PRDCH (i)=P O +α·PL dBm,P O Let P0 be the target received power, α be the path loss compensation factor, PL be the path loss, and P be the target power control parameter value. O Or α.

[0592] As one embodiment, "the second power value depends on the target power control parameter value" includes: the second power value is P PRDCH (i),P PRDCH (i)=P O +α·PL+P offset P O Let P be the target received power P0, and α be the path loss compensation factor. offset The target power control parameter value is given.

[0593] Example 11

[0594] Example 11 illustrates a schematic diagram of the relationship between the first PRDCH and L1 control information according to an embodiment of this application. (See attached diagram.) Figure 11 In the diagram, the horizontal axis represents time, the rectangle enclosed by the thick solid line represents the first PRDCH, and the cross-filled rectangle represents the time-domain resources mapped by the L1 control information.

[0595] In Example 11, the first transmit power value is linearly related to the third power value, and the third power value depends on whether the first PRDCH carries L1 control information.

[0596] As an example, considering that the target BLER (block error rate) of data information and control information may be different, the transmit power of the first PRDCH is determined according to whether the first PRDCH carries L1 control information, thus ensuring the reliability of the transmission control information.

[0597] As an example, the unit of the third power value is dBm (millidecibels).

[0598] As an example, the unit of the third power value is watts or milliwatts.

[0599] As an example, the third power value is a power parameter used to calculate the first transmit power value.

[0600] As an example, the third power value is the value of P0.

[0601] As an example, the third power value is the target received power value of the IoT device in this application.

[0602] As an example, the third power value is the assumed transmit power value of the terminal in this application.

[0603] As an example, the third power value is the target transmit power value of the terminal in this application.

[0604] As an example, the third power value is a power offset value calculated from the first transmit power value.

[0605] As an example, the third power value is the power value for path loss compensation.

[0606] As one embodiment, "the first transmit power value is linearly correlated with the third power value" includes: the first transmit power value is linearly correlated with the logarithm of the third power value.

[0607] As one embodiment, "the first transmit power value is linearly related to the third power value" includes: the first transmit power value is equal to the third power value.

[0608] As one embodiment, "the first transmit power value and the third power value are linearly related" includes: the third power value is the value used to calculate the first transmit power value P. PRDCH One of the parameters of (i).

[0609] As one embodiment, "the first transmit power value is linearly related to the third power value" includes: the third power value is P used to calculate the first transmit power value. O The value of .

[0610] As an example, "the first transmit power value is linearly related to the third power value" includes: the third power value is the product α·PL of the path loss compensation factor and the path loss used to calculate the first transmit power value.

[0611] As one embodiment, "the first transmit power value is linearly related to the third power value" includes: the third power value is the power offset value P used to calculate the first transmit power value. offset .

[0612] As one embodiment, "the first transmit power value is linearly related to the third power value" includes: the first transmit power value is P PRDCH (i), P O The P0 value is the power control parameter indicated by the higher-level parameters. The first PRDCH is the number of resource blocks (RBs) occupied by the first PRDCH during transmission time i, μ represents the subcarrier spacing of the subcarriers included in the first PRDCH in the frequency domain, α is the path loss compensation factor, PL is the path loss, and the third power value is the calculated P above. PRDCH One of the parameters of (i).

[0613] As one embodiment, "the first transmit power value is linearly related to the third power value" includes: the first transmit power value is P PRDCH (i),P PRDCH (i)=P O +α·PL dBm,P O The third power value is P0, which is the power control value indicated by the high-level parameter, α is the road loss compensation factor, PL is the path loss, and P is the third power value. O Or α·PL.

[0614] As one embodiment, "the first transmit power value is linearly related to the third power value" includes: the first transmit power value is P PRDCH (i),P PRDCH (i)=P O +P offset P O The P0 value for power control is indicated by the high-level parameter. offset This is the third power value.

[0615] As an example, the L1 control information is the control information of layer 1 (L1).

[0616] As an example, the L1 control information is physical layer control information.

[0617] As an example, the L1 control information includes at least one L1 control information bit.

[0618] As an example, the bits included in the L1 control information include bits of scheduling information.

[0619] As an example, the bits included in the L1 control information include bits of scheduling information.

[0620] As an example, the bits included in the L1 control information are RDCI (Reader to Device Control Information) bits.

[0621] As an example, at least one bit included in the L1 control information indicates the scheduling information of the first PRDCH.

[0622] As an example, at least one bit included in the L1 control information is used to indicate the length of the first PRDCH.

[0623] As an example, at least one bit included in the L1 control information is used to indicate the duration of the first PRDCH.

[0624] As an example, at least one bit included in the L1 control information is used to indicate the size of the transport block carried by the first PRDCH.

[0625] As an example, the number of bits included in the L1 control information is fixed.

[0626] As an example, the number of bits included in the L1 control information is predefined.

[0627] As an example, the number of bits included in the L1 control information is the same as the number of bits in the RDCI (Reader to Device Control Information) format.

[0628] As an example, the bits included in the L1 control information and the data information (or TB or CB) bits included in the first PRDCH are independently attached (or have CRC (Cyclic Redundancy Check) added.

[0629] As one embodiment, the first PRDCH carrying L1 control information includes: the first PRDCH carrying at least one L1 control information bit.

[0630] As one embodiment, the first PRDCH carrying L1 control information includes: the first PRDCH carrying physical layer control information.

[0631] As an example, the first PRDCH carrying L1 control information includes: at least one L1 control information bit is used to generate the first PRDCH.

[0632] As one embodiment, the first PRDCH carrying L1 control information includes: at least one L1 control information bit being mapped to the first PRDCH.

[0633] As an example, the first PRDCH carrying L1 control information includes: at least one L1 control information bit being mapped to the time domain resources occupied by the first PRDCH.

[0634] As an example, when the first PRDCH carries L1 control information, the time-domain resources mapped by the L1 control information bits carried by the first PRDCH are earlier than the time-domain resources mapped by the data information bits carried by the first PRDCH.

[0635] As an example, the first PRDCH not carrying L1 control information includes: the first PRDCH carrying only one TB (transport block).

[0636] As one embodiment, the first PRDCH not carrying L1 control information includes: the first PRDCH only carrying higher-level control information.

[0637] As an example, the first PRDCH not carrying L1 control information includes: the first PRDCH only carrying data information bits.

[0638] As one embodiment, "the third power value depends on whether the first PRDCH carries L1 control information" includes: the third power value is related to whether the first PRDCH carries L1 control information.

[0639] As one embodiment, "the third power value depends on whether the first PRDCH carries L1 control information" includes: whether the first PRDCH carries L1 control information is used to determine the third power value.

[0640] As one embodiment, "the third power value depends on whether the first PRDCH carries L1 control information" includes: whether the first PRDCH carries L1 control information is used by the terminal in this application to determine the third power value.

[0641] As an example, "the third power value depends on whether the first PRDCH carries L1 control information" includes: whether the first PRDCH carries L1 control information and the third power value have a corresponding relationship or mapping relationship.

[0642] As an example, "the third power value depends on whether the first PRDCH carries L1 control information" includes: the first information block in this application configures the third power value for the first PRDCH carrying L1 control information and the first PRDCH not carrying L1 control information respectively.

[0643] As one embodiment, "the third power value depends on whether the first PRDCH carries L1 control information" includes: when the first PRDCH carries L1 control information, the third power value is one value; when the first PRDCH does not carry L1 control information, the third power value is another value.

[0644] As one embodiment, "the third power value depends on whether the first PRDCH carries L1 control information" includes: when the first PRDCH does not carry L1 control information, the third power value is a first value; when the first PRDCH carries L1 control information, the third power value is the sum of the first value and an offset value.

[0645] Example 12

[0646] Example 12 illustrates a structural block diagram of a processing device in a terminal according to an embodiment, as shown in the attached diagram. Figure 12 As shown. In the appendix Figure 12 In the terminal, the processing device 1200 includes a first transmitter 1201. The first transmitter 1201 includes the components specified in the appendix to this application. Figure 4 The transmitter / receiver 416 (including antenna 420), the transmitter processor 415, and the controller / processor 440 are included; the first receiver 1202 includes the appendix to this application. Figure 4 The transmitter / receiver 416 (including antenna 420), receiver processor 412, and controller / processor 440 are included.

[0647] In embodiment 12, a first receiver 1202 receives a first information block, which indicates a first power control parameter value and a second power control parameter value; a first transmitter 1201 transmits a first PRDCH, which uses OOK; wherein, the first PRDCH is used in the IoT access process; the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value, the maximum output power value depending on the power level of the transmitter of the first PRDCH; the first transmit power value depends on a target power control parameter value, which is equal to either the first power control parameter value or the second power control parameter value, the target power control parameter value depending on the order of the messages carried by the first PRDCH in the IoT access process.

[0648] As an example, when the first PRDCH carries paging information, the target power control parameter value is equal to the first power control parameter value; when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

[0649] As an example, when the first PRDCH carries a paging message, the first transmit power value depends on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value depends on the first path loss, which is the path loss between the terminal and the receiver of the first PRDCH.

[0650] As an example, the first receiver 1202 receives a first PDRCH, which carries Msg1; wherein the first path loss is calculated based on the received power when the terminal receives the preamble of the first PDRCH.

[0651] As an example, the calculation of the first path loss depends on the device type of the receiver of the first PDRCH, the device type including at least one of type 1, type 2a and type 2b; when the device type is type 1 or type 2a, the calculation of the first path loss depends on the transmit power value of the carrier used for back reflection of the first PDRCH transmitted by the terminal; when the device type is type 2b, the calculation of the first path loss depends on the transmit power value of the first PDRCH, the transmit power value of the first PDRCH depending on the power level of the sender of the first PDRCH.

[0652] As an example, the first transmit power value is equal to the smaller of the first power value and the second power value, the first power value depending on the downlink path loss, and the second power value depending on the target power control parameter value.

[0653] As an example, the first transmit power value is linearly related to the third power value, which depends on whether the first PRDCH carries L1 control information.

[0654] Example 13

[0655] Example 13 illustrates a structural block diagram of a processing device for an Internet of Things (IoT) device according to an embodiment, as shown in the attached diagram. Figure 13 As shown. In the appendix Figure 13 In the IoT device, the processing unit 1300 includes a second receiver 1301. The second receiver 1301 includes the components specified in the appendix of this application. Figure 14 The receiver-related module 1409, BB (Baseband) logic 1413, memory 1418, and clock generator 1419 are included; the second transmitter 1302 includes the appendix to this application. Figure 14 The launch-related module 1417 in the middle.

[0656] In embodiment 13, the second receiver 1301 receives a first PRDCH, which uses OOK; wherein, the sender of the first PRDCH receives a first information block, the first information block indicating a first power control parameter value and a second power control parameter value; the first PRDCH is used in the IoT access process; the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value, the maximum output power value depending on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, the target power control parameter value being equal to either the first power control parameter value or the second power control parameter value, the target power control parameter value depending on the order of the messages carried by the first PRDCH in the IoT access process.

[0657] As an example, when the first PRDCH carries paging information, the target power control parameter value is equal to the first power control parameter value; when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

[0658] As an example, when the first PRDCH carries a paging message, the first transmit power value depends on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value depends on the first path loss, which is the path loss between the sender of the first PRDCH and the IoT device.

[0659] As one embodiment, the second transmitter 1302 transmits a first PDRCH, which carries Msg1; wherein the first path loss is calculated based on the received power when the receiver of the first PDRCH receives the preamble of the first PDRCH.

[0660] As an example, the calculation of the first path loss depends on the device type of the IoT device, which includes at least one of type 1, type 2a, and type 2b; when the device type is type 1 or type 2a, the calculation of the first path loss depends on the transmit power value of the carrier used for back reflection of the first PDRCH transmitted by the sender of the first PDRCH; when the device type is type 2b, the calculation of the first path loss depends on the transmit power value of the first PDRCH, which depends on the power level of the IoT device.

[0661] As an example, the first transmit power value is equal to the smaller of the first power value and the second power value, the first power value depending on the downlink path loss, and the second power value depending on the target power control parameter value.

[0662] As an example, the first transmit power value is linearly related to the third power value, which depends on whether the first PRDCH carries L1 control information.

[0663] Example 14

[0664] Example 14 illustrates a schematic diagram of the structure of an A-IoT device according to an embodiment of this application, as shown in the attached diagram. Figure 14 As shown.

[0665] Appendix Figure 14In this embodiment, the A-IoT device 1400 includes an antenna 1401, an energy-related module 1404, and a processing-related module 1408. The A-IoT device 1400 may also include a matching network 1402 for matching the impedance between the antenna 1401 and other components, including a radio frequency (RF) energy harvester 1403 and a receiver-related module 1409. The A-IoT device 1400 may also include an energy harvester, which can be either an RF energy harvester 1403 or a non-RF energy harvester 1407. The RF energy harvester 1403 may include a rectifier that performs RF signal (AC) to DC conversion. The RF energy harvester 1403 and the receiver / transmitter may share the antenna 1401, or they may use independent antennas. The energy-related module 1404 may include a power management unit (PMU) 1405; the PMU 1405 is responsible for storing energy from the energy harvester in energy storage 1406 and supplying power to active component blocks that require power. The energy-related module 1404 may also include energy storage 1406; the energy storage 1406 stores energy collected from the energy harvester, and the energy storage 1406 may be a capacitor. The processing module 1408 may include a BB (Baseband) logic 1413, a memory 1418, and a clock generator 1419. The BB logic 1413 may include a decoder 1414, a controller 1415, and an encoder 1416. The memory 1418 may include two types: non-volatile memory (NVM), such as EEPROM, for permanent storage of the device ID; and a register for temporarily storing information needed for operation only when energy in the energy storage 1406 is available. The clock generator 1419 provides the required clock signal. The processing module 1408 may also include reception-related blocks 1409 and transmission-related blocks 1417. For different A-IoT devices, the reception-related blocks 1409 and transmission-related blocks 1417 may include different modules.

[0666] As an example, for an A-IoT device 1400 with a peak power consumption of approximately 1 μW, the receive correlation module 1409 may include an RF BPF 1410, an RF envelope detector (RF-ED), a BB LPF 1411, and a comparator 1412. The transmit correlation module 1417 may include a backscatter modulator.

[0667] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially by the RF BPF 1410, the RF envelope detector, the BB LPF 1411, and the comparator 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by the backscatter modulator and then transmitted by the antenna 1401.

[0668] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an external carrier wave is used, the receive-related module 1409 may include an RF BPF 1410, an LNA (Low-noise amplifier), an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a large frequency shifter (e.g., tens of megahertz), a backscatter modulator, and a reflection amplifier. At least one of R2D (Reader to Device) / CW2D (Carrier-wave, or carrier-wave node, to Device) and D2R (Device to Reader) can be amplified by the reflection amplifier or the LNA. The large frequency shifter shifts the backscattered signal from one frequency (e.g., an FDD-DL frequency) to another frequency (e.g., an FDD-UL frequency).

[0669] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is then processed by a large frequency shifter, a backscatter modulator, and a reflection amplifier before being transmitted by the antenna 1401.

[0670] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an RF envelope detector receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator (Tx modulator), a digital-to-analog converter (DAC), a low-pass filter, a mixer, a local oscillator (LO) / FLL ( / PLL), and a power amplifier (PA).

[0671] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is then processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0672] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an IF envelope detector receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector (IF-ED), a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The IF amplifier amplifies the IF signal. The IF filter filters out unwanted RF and LO signals. The IF envelope detector detects the envelope from the IF signal. The mixer in the receive-related module 1409 down-converts the RF signal to the IF stage. Depending on the implementation, there can be one or two mixers for both the transmitter and receiver.

[0673] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0674] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrierwave is used and a zero-IF (ZIF) receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, a mixer, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The mixer in the receive-related module 1409 down-converts the RF signal to the BB stage. Depending on the implementation, there may be one or two mixers for both the transmitter and receiver.

[0675] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, a mixer, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0676] In the above embodiments, the RF BPF 1410 is used to enhance selectivity; depending on the implementation, the RF BPF 1410 may not be present. The BB LPF 1411 is used to filter out harmonics and high-frequency components, improving the input signal quality of the comparator / ADC 1412; depending on the implementation, the BB LPF 1411 may not be present. The comparator 1412 is used to detect the high / low of the input signal. The backscatter modulator is used to convert the impedance into a modulated backscatter signal carrying the transmit signal from the BB logic 1413. The LNA is used to improve signal strength and receiver sensitivity. The RF envelope detector is used to detect the envelope from the RF signal. The BB amplifier is used to amplify the signal to improve signal strength. The transmit modulator is used to modulate the baseband bits according to the modulation scheme; the transmit modulator may be part of the BB logic 1413. The digital-to-analog converter is used to convert the digital signal to an analog signal. The low-pass filter is used to filter out unwanted signals. The mixer in the transmit correlation module 1417 is used to upconvert the baseband signal to the RF range. The LO (Local Optical Array) is used to generate the carrier frequency; the FLL ( / PLL) can be used for frequency synthesis, and depending on the implementation, the FLL ( / PLL) may not be present. The power amplifier is used to amplify the transmitted signal.

[0677] As an example, the A-IoT device is the Internet of Things device described in this application.

[0678] It should be noted that the structure of the A-IoT device in this example does not limit the specific implementation of A-IoT in this application. Specifically, depending on the different functions and actual application scenarios of the A-IoT device, the A-IoT device may adopt the structure of the A-IoT device in this example, or it may include only some modules of the structure of the A-IoT device in this example, and it may also include the aforementioned appendix. Figure 14 Other modules not shown.

[0679] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The terminal or base station or UE in this application includes, but is not limited to, mobile phones, tablets, laptops, network cards, low-power devices, IoT devices, eMTC devices, NB-IoT devices, vehicle communication devices, aircraft, airplanes, drones, remote-controlled airplanes, testing devices, testing equipment, testing instruments, etc. The base station equipment or base station or network-side equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, Transmitter Receiver Nodes (TRPs), relay satellites, satellite base stations, airborne base stations, testing devices, testing equipment, testing instruments, etc.

[0680] Those skilled in the art will understand that the present invention can be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A method for use in a terminal, characterized in that, include: Receive a first information block, the first information block indicating a first power control parameter value and a second power control parameter value; Send the first PRDCH, which uses OOK; In this process, the first PRDCH is used for IoT access; the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value, wherein the maximum output power value depends on the power level of the sender of the first PRDCH; the first transmit power value depends on the target power control parameter value, wherein the target power control parameter value is equal to either the first power control parameter value or the second power control parameter value, wherein the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process.

2. The method according to claim 1, characterized in that, When the first PRDCH carries paging information, the target power control parameter value is equal to the first power control parameter value; when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

3. The method according to claim 1 or 2, characterized in that, When the first PRDCH carries a paging message, the first transmit power value depends on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value depends on the first path loss, which is the path loss between the terminal and the receiver of the first PRDCH.

4. The method according to claim 3, characterized in that, include: Receive the first PDRCH, which carries Msg1; The first path loss is calculated based on the received power of the terminal when receiving the preamble of the first PDRCH.

5. The method according to claim 4, characterized in that, The calculation of the first path loss depends on the device type of the receiver of the first PDRCH, which includes at least one of type 1, type 2a, and type 2b; when the device type is type 1 or type 2a, the calculation of the first path loss depends on the transmit power value of the carrier used for back reflection of the first PDRCH transmitted by the terminal; when the device type is type 2b, the calculation of the first path loss depends on the transmit power value of the first PDRCH, which depends on the power level of the sender of the first PDRCH.

6. The method according to any one of claims 1-5, characterized in that, The first transmit power value is equal to the smaller of the first power value and the second power value, the first power value depends on the downlink path loss, and the second power value depends on the target power control parameter value.

7. The method according to any one of claims 1-6, characterized in that, The first transmit power value is linearly related to the third power value, and the third power value depends on whether the first PRDCH carries L1 control information.

8. A terminal, characterized in that, The terminal includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the terminal to perform the method as described in any one of claims 1-7.

9. A method for use in Internet of Things (IoT) devices, characterized in that, include: Receive the first PRDCH, which uses OOK; In this process, the sender of the first PRDCH receives a first information block, which indicates a first power control parameter value and a second power control parameter value; the first PRDCH is used in the IoT access process; the transmit power value of the first PRDCH is equal to the smaller value between the maximum output power value and the first transmit power value, wherein the maximum output power value depends on the power level of the sender of the first PRDCH; the first transmit power value depends on a target power control parameter value, which is equal to either the first power control parameter value or the second power control parameter value, wherein the target power control parameter value depends on the order of the messages carried by the first PRDCH in the IoT access process.

10. The method according to claim 9, characterized in that, When the first PRDCH carries paging information, the target power control parameter value is equal to the first power control parameter value; when the first PRDCH carries Msg2, the target power control parameter value is equal to the second power control parameter value.

11. The method according to claim 9 or 10, characterized in that, When the first PRDCH carries a paging message, the first transmit power value depends on the downlink path loss; when the first PRDCH carries Msg2, the first transmit power value depends on the first path loss, which is the path loss between the sender of the first PRDCH and the IoT device.

12. The method according to claim 11, characterized in that, include: Send the first PDRCH, which carries Msg1; The first path loss is calculated based on the received power of the receiver of the first PDRCH when it receives the preamble of the first PDRCH.

13. The method according to claim 12, characterized in that, The calculation of the first path loss depends on the device type of the IoT device, which includes at least one of type 1, type 2a, and type 2b; when the device type is type 1 or type 2a, the calculation of the first path loss depends on the transmit power value of the carrier used for back reflection of the first PDRCH transmitted by the sender of the first PDRCH; when the device type is type 2b, the calculation of the first path loss depends on the transmit power value of the first PDRCH, which depends on the power level of the IoT device.

14. The method according to any one of claims 9-13, characterized in that, The first transmit power value is equal to the smaller of the first power value and the second power value, the first power value depends on the downlink path loss, and the second power value depends on the target power control parameter value.

15. The method according to any one of claims 9-14, characterized in that, The first transmit power value is linearly related to the third power value, and the third power value depends on whether the first PRDCH carries L1 control information.

16. An Internet of Things (IoT) device, characterized in that, The Internet of Things (IoT) device includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the IoT device to perform the method as described in any one of claims 9-15.

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