Power control method and device and electronic equipment

Abstract

The invention provides a power control method and device and electronic equipment, and the method comprises the steps: receiving a target uplink reference signal transmitted by terminal equipment under the condition that a power rising count value reaches a preset counting threshold value, and enabling the power rising count value to indicate that the target uplink reference signal is sent by the terminal equipment in a random access process of the terminal equipment; the terminal equipment adopts an open-loop power control mode to adjust the number of iterations of the sending power of the random access preamble; measuring the target uplink reference signal to obtain a channel measurement parameter; sending a first message including the channel measurement parameter to the network device; and receiving first indication information sent by the network device, the first indication information being used for indicating the relay device to perform signal transmission by using a first transmission parameter, the first transmission parameter being obtained according to the channel measurement parameter, so as to reduce power control complexity and improve power control efficiency.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a power control method, device and electronic equipment. Background Art

[0002] A relay device can be set between the terminal device and the network device. The terminal device and the network device communicate through the relay device. The relay device can re-beamform the signal from the terminal device or the network device to enhance the coverage of the blind area and improve the communication quality. In addition, considering the energy consumption and interference issues, the relevant protocols perform power control on the transmission. The power control generally includes open-loop power control and closed-loop power control. In the random access process, the power control generally adopts open-loop power control.

[0003] In the open-loop power control scheme of the related art, the terminal device adjusts the corresponding transmission power according to the random access response of the network device forwarded by the relay device. The open-loop power control requires a large number of power iterations (adjustments), that is, the power control process is complicated, resulting in poor power control efficiency. Summary of the invention

[0004] The embodiments of the present application provide a power control method, device and electronic device to solve the problem of poor efficiency of existing power control.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a power control method, which is applied to a relay device, and the method includes:

[0007] A target uplink reference signal sent by a receiving terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations of the terminal device using an open-loop power control method to adjust the transmission power of a random access preamble during a random access process of the terminal device;

[0008] Measuring the target uplink reference signal to obtain a channel measurement parameter;

[0009] Sending a first message to a network device, where the first message includes the channel measurement parameter;

[0010] Receive first indication information sent by the network device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, where the first sending parameter is obtained according to the channel measurement parameter.

[0011] In a second aspect, an embodiment of the present application provides a power control method, which is applied to a network device, and the method includes:

[0012] Receiving a first message sent by a relay device, wherein the first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by a terminal device;

[0013] Determine a first sending parameter according to the channel measurement parameter;

[0014] First indication information is sent to the relay device, where the first indication information is used to instruct the relay device to use the first sending parameter to send a signal.

[0015] In a third aspect, an embodiment of the present application provides a power control method, which is applied to a terminal device, and the method includes:

[0016] When the power climbing count value reaches a preset counting threshold value, a target uplink reference signal is sent to the relay device, and the target uplink reference signal is used by the relay device to perform measurements to obtain channel measurement parameters, wherein the power climbing count value indicates the number of iterations during the random access process of the terminal device that the terminal device uses an open-loop power control method to adjust the transmission power of the random access preamble code.

[0017] In a fourth aspect, an embodiment of the present application provides a power control device, which is applied to a relay device, and the device includes:

[0018] A first receiving module, configured to receive a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations during which the terminal device uses an open-loop power control method to adjust the transmission power of a random access preamble code during a random access process of the terminal device;

[0019] A measurement module, used to measure the target uplink reference signal to obtain a channel measurement parameter;

[0020] A first sending module, configured to send a first message to a network device, wherein the first message includes the channel measurement parameter;

[0021] The second receiving module is used to receive first indication information sent by the network device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, and the first sending parameter is obtained according to the channel measurement parameter.

[0022] In a fifth aspect, an embodiment of the present application provides a power control device, applied to a network device, the device comprising:

[0023] A third receiving module is used to receive a first message sent by the relay device, where the first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by the terminal device;

[0024] A first determining module, configured to determine a first sending parameter according to the channel measurement parameter;

[0025] The second sending module is used to send first indication information to the relay device, where the first indication information is used to instruct the relay device to use the first sending parameter to send a signal.

[0026] In a sixth aspect, an embodiment of the present application provides a power control device, applied to a terminal device, the device comprising:

[0027] The third sending module is used to send a target uplink reference signal to the relay device when the power climbing count value reaches a preset counting threshold value, and the target uplink reference signal is used by the relay device to measure to obtain channel measurement parameters, wherein the power climbing count value indicates the number of iterations of the terminal device adjusting the transmission power of the random access preamble code using an open-loop power control method during the random access process of the terminal device.

[0028] In a seventh aspect, an embodiment of the present application provides an electronic device, wherein the electronic device is a relay device, including a transceiver and a processor.

[0029] The processor is configured to:

[0030] Receiving, by the transceiver, a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations of the terminal device using an open-loop power control method to adjust the transmission power of a random access preamble code during a random access process of the terminal device;

[0031] Measuring the target uplink reference signal to obtain a channel measurement parameter;

[0032] Sending a first message to a network device through the transceiver, wherein the first message includes the channel measurement parameter;

[0033] The transceiver receives first indication information sent by the network device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, and the first sending parameter is obtained according to the channel measurement parameter.

[0034] In an eighth aspect, an embodiment of the present application provides an electronic device, wherein the electronic device is a network device, including a transceiver and a processor.

[0035] The processor is configured to:

[0036] Receiving, by the transceiver, a first message sent by a relay device, wherein the first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by a terminal device;

[0037] Determine a first sending parameter according to the channel measurement parameter;

[0038] The transceiver sends first indication information to the relay device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal.

[0039] In a ninth aspect, an embodiment of the present application provides an electronic device, wherein the electronic device is a terminal device, including a transceiver and a processor.

[0040] The processor is configured to:

[0041] When the power climbing count value reaches a preset count threshold value, a target uplink reference signal is sent to the relay device through the transceiver, and the target uplink reference signal is used by the relay device to measure to obtain channel measurement parameters, wherein the power climbing count value indicates the number of iterations of the terminal device using an open-loop power control method to adjust the transmission power of the random access preamble code during the random access process of the terminal device.

[0042] In the tenth aspect, an embodiment of the present application provides an electronic device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the power control method described in the first aspect above, or implements the steps of the power control method described in the second aspect above, or implements the steps of the power control method described in the third aspect above.

[0043] In the eleventh aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the power control method described in the first aspect are implemented, or the steps of the power control method described in the second aspect are implemented, or the steps of the power control method described in the third aspect are implemented.

[0044] In the power control method of this embodiment, the relay device can receive the target uplink reference signal sent by the terminal device when the power climbing count value reaches the preset count threshold value, that is, the terminal device can send the target uplink reference signal when the power climbing count value reaches the preset count threshold value, triggering the relay device to perform channel detection (measurement), that is, after the relay device receives the target uplink reference signal, it can measure the target uplink reference signal, obtain the channel measurement parameters, and report them to the network device, the network device can determine the first sending parameter of the relay device according to the channel detection parameters, the relay device can receive the first indication information sent by the network device, and the The first indication information is used to instruct the relay device to use the first sending parameter to send a signal, so that the relay device can use the first sending parameter to send a signal after receiving the first indication information. Since the network device and the terminal device communicate through the relay device, the sending parameter of the relay device can affect the path loss between the network device and the terminal device. In this embodiment, the sending parameter of the relay device can be adjusted according to the channel measurement parameter of the channel detection, so that the relay device can use the first sending parameter determined according to the channel measurement parameter to send a signal. In this way, the path loss can be reduced, thereby reducing the number of power adjustments, reducing the complexity of power control, and thus improving the power control efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0046] Figure 1 This is one of the flow charts of a power control method provided in an embodiment of the present application;

[0047] Figure 2 This is the second flowchart of a power control method provided in an embodiment of the present application;

[0048] Figure 3 This is a third flowchart of a power control method provided in an embodiment of the present application;

[0049] Figure 4 This is one of the application scenario diagrams of a power control method provided in an embodiment of the present application;

[0050] Figure 5 It is a graph showing the relationship between the number of transmissions and the transmission power in an open-loop power control in a related art;

[0051] Figure 6 is an interactive principle diagram of a power control method provided in an embodiment of the present application;

[0052] Figure 7 This is the second application scenario diagram of a power control method provided in an embodiment of the present application;

[0053] Figure 8 It is a transmission timing diagram provided by an embodiment of the present application;

[0054] Fig. 9 is a structural schematic diagram of a power control device provided in an embodiment of the present application;

[0055] Fig.10 is a structural schematic diagram of a power control device provided in an embodiment of the present application;

[0056] Fig.11 is a structural schematic diagram of a power control device provided in an embodiment of the present application;

[0057] Fig.12 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0058] Fig.13 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0059] Fig.14 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0061] See also Figure 1 , Figure 1 This is a flow chart of a power control method provided in an embodiment of the present application, which is applied to a relay device, and the relay device may include a reconfigurable intelligent surface (RIS) or an intelligent reflecting surface (IRS) or a repeater (also called a network controlled repeater (NCR)). Figure 1 As shown, the power control method provided in this embodiment includes the following steps:

[0062] Step 101: receiving a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value;

[0063] The power climbing count value indicates the number of iterations by which the terminal device adjusts the transmission power of the random access preamble code using an open-loop power control method during the random access process.

[0064] It should be understood that, in an open-loop power control mode, the terminal device iterates the transmission power once if no random access response is received within a preset time window after each transmission of a random access preamble code, i.e., adjusts the transmission power of the random access preamble code once, and resends the random access preamble code to implement switching power control of the transmission power of the random access preamble code. The above-mentioned power climbing count value indicates the number of iterations (i.e., the number of adjustments) of the transmission power of the random access preamble code by the terminal device using an open-loop power control method during the random access process.

[0065] Step 102: Measure the target uplink reference signal to obtain channel measurement parameters.

[0066] After receiving the target uplink reference signal, the relay device can perform channel measurement to obtain a channel measurement parameter. It should be understood that the channel measurement parameter is the channel state information between the relay device and the terminal measured by the relay device. In an example, the channel measurement parameter may include but is not limited to at least one of the following: channel state information (CSI); transmission direction; reference signal received power (RSRP), etc.

[0067] Step 103: Send a first message to the network device, where the first message includes a channel measurement parameter.

[0068] Step 104: Receive first indication information sent by the network device;

[0069] The first indication information is used to instruct the relay device to use a first sending parameter to send a signal, and the first sending parameter is obtained according to a channel measurement parameter.

[0070] That is, after receiving the first message, the network device can determine the first sending parameter of the relay device according to the channel measurement parameter in the first message, and send the first indication information to the relay device, so that the relay device can use the first sending parameter to send signals.

[0071] In the power control method of this embodiment, the relay device can receive the target uplink reference signal sent by the terminal device when the power climbing count value reaches the preset counting threshold value, that is, the terminal device can send the target uplink reference signal when the power climbing count value reaches the preset counting threshold value, triggering the relay device to perform channel detection (measurement), that is, after the relay device receives the target uplink reference signal, it can measure the target uplink reference signal, obtain the channel measurement parameters, and report them to the network device, the network device can determine the first sending parameter of the relay device according to the channel detection parameters, the relay device can receive the first indication information sent by the network device, and the first indication information sent by the network device can be reported to the relay device. An indication message is used to instruct the relay device to use a first sending parameter to send a signal, so that the relay device can use the first sending parameter to send a signal after receiving the first indication message. Since the network device and the terminal device communicate through the relay device, the sending parameter of the relay device can affect the path loss between the network device and the terminal device. In this embodiment, the sending parameter of the relay device can be adjusted according to the channel measurement parameter of the channel detection, so that the relay device can use the first sending parameter determined according to the channel measurement parameter to send a signal. In this way, the path loss can be reduced, thereby reducing the number of power adjustments, reducing the complexity of power control, and thus improving the power control efficiency.

[0072] In one example, the relay device may be composed of a RIS, a controller of the RIS, and a perception module of the RIS, wherein the controller of the RIS and the perception module of the RIS are separately arranged and connected, or the relay device may be composed of an IRS, a controller of the IRS, and a perception module of the IRS, wherein the controller of the IRS and the perception module of the IRS are separately arranged and connected.

[0073] In addition, it should be noted that, in one example, the above-mentioned target uplink reference signal may be an uplink reference signal related to the random access preamble code (for example, a related deformation of the random access preamble code, etc.), that is, the target uplink reference signal may be a reference signal generated based on the random access preamble code, or the target uplink signal may also directly use the random access preamble code, that is, use the random access preamble code as the target uplink signal, etc.

[0074] In one embodiment, receiving first indication information sent by a network device includes: receiving first indication information sent by the network device when determining that the following conditions are met:

[0075] If the terminal device sends a random access preamble code with a maximum transmission power and the relay device sends a random access preamble code to the network device with a first transmission parameter, there is a possibility that the terminal device can successfully perform random access.

[0076] That is, the network device may send the first indication information to the relay device only when it determines that the terminal device has the possibility of random access, so that after the relay device receives the first indication information, it can use the first sending parameter to send signals, etc. Since the network device and the terminal device communicate through the relay device, the sending parameters of the relay device can affect the path loss between the network device and the terminal device. In this embodiment, the sending parameters of the relay device can be adjusted according to the channel measurement parameters of the channel detection, so that the relay device can use the first sending parameters determined according to the channel measurement parameters to send signals. In this way, the path loss can be reduced, thereby reducing the number of power adjustments, reducing the complexity of power control, and thus improving the power control efficiency.

[0077] In one embodiment, when the difference between the maximum transmission power and the first path loss is not less than the target receiving power, the terminal device has the possibility of successful random access, the target receiving power represents the minimum receiving power of the network device, and the first path loss is calculated based on the first sending parameter.

[0078] The first path loss can be the path loss from the terminal device to the network device estimated (estimated) according to the first transmission parameter, that is, the first path loss can be understood as the path loss estimation value. In this embodiment, when the difference between the maximum transmission power and the first path loss is greater than or equal to (that is, not less than) the target receiving power, it is determined that the terminal device has the possibility of successful random access, and then the first indication information can be sent to the relay device to instruct the relay device to use the first transmission parameter for signal transmission. The relay device receives the first indication information sent by the network device when it is determined that the terminal device has the possibility of successful random access, and then the signal can be transmitted according to the first transmission parameter indicated by the first indication information. In this embodiment, it is determined whether the terminal device has the possibility of successful access by judging whether the difference between the maximum transmission power and the first path loss is less than the target receiving power. When the difference between the maximum transmission power and the first path loss is not less than the target receiving power, it can be determined that the terminal device has the possibility of successful random access, which can improve the accuracy of determining whether the terminal has the possibility of successful random access.

[0079] In an example, the first path loss can be the modulus of H_1*A1*H_2, where H_1 represents a channel measurement parameter, i.e., channel state information between the relay device and the terminal obtained by the relay device measuring the target uplink reference signal, A1 represents a first sending parameter, and H_2 represents the channel state information between the network device and the relay device, which is a known quantity that can be determined in advance after network deployment or planning, i.e., the network device can obtain H_2 in advance.

[0080] In one embodiment, before receiving a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, the method further includes:

[0081] Receive the random access preamble code sent by the terminal device for the i-th time, where i is a positive integer not greater than the preset maximum number of times the preamble code is repeatedly sent;

[0082] A random access preamble is sent to the network device using a second sending parameter, wherein the second sending parameter is different from the first sending parameter.

[0083] It should be understood that the random access preamble code sent for the i-th time is a random access preamble code sent at the i-th transmission power, and the relay device receives the random access preamble code sent by the terminal device at the i-th transmission power. The initial value of i can be 1, and the i-th transmission power can be understood as the transmission power determined for the i-th time (obtained in the i-th iteration) by the terminal device. Before receiving the target uplink reference signal sent by the terminal device, the power climbing count value can be represented by i. After receiving the random access preamble sent by the terminal device, the relay device sends a random access preamble code to the network device with a second transmission parameter, and the second transmission parameter is different from the first transmission parameter. That is, before receiving the target uplink reference signal, the relay device can send a signal through the second sending parameter, and after receiving the target uplink reference signal sent by the terminal device, it can measure to obtain the channel measurement parameters, and send a first message including the channel measurement parameters to the network device. Since the network device and the terminal device communicate with each other through the relay device, the sending parameters of the relay device can affect the path loss between the network device and the terminal device. In this way, after the network device receives the first message, it can adjust the sending parameters of the relay device according to the channel measurement parameters of the channel detection, determine the first sending parameters, and send a first indication information to the relay device, so that the relay device can use the first sending parameters determined according to the channel measurement parameters to send signals. After receiving the first indication information sent by the network device, the relay device can send signals through the first sending parameters indicated by the first indication information. In this way, the path loss can be reduced, thereby reducing the number of power adjustments, reducing the complexity of power control, and improving the power control efficiency. It should also be noted that after the relay device sends a random access preamble code to the network device with the second sending parameter, if the network device receives the random access preamble code, it can return a random access response to the relay device. After receiving the random access response, the relay device sends it to the terminal device. If the network device fails to successfully receive the random access preamble code, etc., it will not return a random access response. In this way, the terminal device fails to receive the random access response.

[0084] In one embodiment, before receiving the random access preamble code sent by the terminal device for the i-th time, the method further includes:

[0085] Receiving a plurality of downlink signals sent by a network device, the plurality of downlink signals comprising a downlink signal group, the downlink signal group being a signal group preconfigured by the network device;

[0086] Sending a downlink signal group to the terminal device using a second sending parameter;

[0087] Among them, the transmission power of the random access preamble code sent for the i-th time (i.e., the i-th transmission power) is positively correlated with the target receiving power of the network device, the second path loss from the network device to the terminal device, and i. The target receiving power represents the minimum receiving power of the network device. The second path loss is the result of subtracting the reference signal receiving power of the terminal device for the target downlink signal from the transmission power of the target downlink signal sent by the network device. The target downlink signal is any signal in the downlink signal group whose reference signal receiving power is higher than the preset power threshold.

[0088] It should be noted that the above-mentioned multiple downlink signals are sent by the network device to the relay device, and the downlink signal group is sent by the relay device to the terminal device. After receiving the multiple downlink signals, the relay device can send the downlink signal group pre-configured by the network device in the multiple reference signals to the terminal device. It should be understood that the relay device selects a downlink signal from multiple downlink signals to send to the terminal device, and the downlink signal group pre-configured by the network device is selected to send to the terminal device, and the above-mentioned downlink signal group can be at least part of the multiple downlink signals.

[0089] In one example, the downlink signal in the downlink signal group in the present application may be, but is not limited to, a synchronization signal block (Synchronization Signal Block, SSB) / channel state information reference signal (Channel State Information Reference Signal, CSI-RS) and the like.

[0090] In this embodiment, after receiving multiple downlink signals sent by the network device, the relay device can send a downlink signal group pre-configured by the network device in the multiple downlink signals to the terminal device. The above-mentioned target downlink signal can be understood as a downlink signal detectable by the terminal device in the downlink signal group. For example, if the downlink signal is SSB, the target downlink signal is the target SSB, which can be understood as the SSB that the terminal can detect and select to access. The terminal device can determine the second path loss using the transmit power of the target downlink signal and the reference signal receiving power of the target downlink signal, and determine the transmit power of the random access preamble code sent for the i-th time based on the target receiving power of the network device, the second path loss, and i, and then send the random access preamble code for the i-th time. The relay device can receive the random access preamble code sent by the terminal device for the i-th time.

[0091] In one embodiment, the transmission power of the random access preamble code sent for the i-th time is obtained by iterating the following formula:

[0092] P_RACH(i)=P_target+PL1+b×(i-1);

[0093] Wherein, P_RACH(i) is the transmission power of the random access preamble code sent for the i-th time, P_target is the target received power, b is the preset power climbing step, and PL1 represents the second path loss.

[0094] In one embodiment, the first message also includes an index of the target downlink signal.

[0095] In one embodiment, after receiving multiple downlink signals sent by the network device, the method further includes:

[0096] Sending a system message to the terminal device using a second sending parameter;

[0097] The system message includes at least one of the following:

[0098] Second indication information, the second indication information is used to indicate that the relay device has a channel detection capability;

[0099] third indication information, where the third indication information is used to indicate the transmit power of the target uplink reference signal;

[0100] Resource configuration of an uplink reference signal group, wherein the uplink reference signal group includes a target uplink reference signal, and the uplink reference signal group is used by a relay device to measure a channel from a terminal device to the relay device;

[0101] The target receive power of the network device.

[0102] That is, in this embodiment, the relay device may send the above system message to the terminal device, and the terminal device acquires the above system information to facilitate the subsequent power control process.

[0103] In addition, it should be noted that if the downlink signal group is an SSB group, that is, it includes SSB, the target downlink signal is the target SSB, and the above-mentioned system message may be a message in the target SSB, that is, the target SSB may carry the system message, and the system message may be sent to the terminal device along with the SSB, and the terminal device may decode the received target SSB to obtain the system message therein.

[0104] In one embodiment, before receiving a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, the method further includes:

[0105] Receive configuration information sent by network devices;

[0106] The configuration information includes at least one of the following:

[0107] Resource configuration of downlink signal group;

[0108] Resource configuration of the uplink reference signal group.

[0109] It should be noted that the uplink reference signal group includes the above-mentioned target uplink reference signal, and the uplink reference signal group can be used by the relay device to measure the channel from the terminal device to the relay device. In addition, the downlink signal group is a signal among multiple downlink signals sent by the network device to the relay device, and is a signal group pre-configured by the network device. The relay device can send the downlink signal group to the terminal device, and the downlink signal group can be used for downlink synchronization, obtaining the necessary system information for initiating random access, and identifying whether it is located in the service range of the relay device.

[0110] In one embodiment, the first sending parameter includes any one of the following:

[0111] First phase;

[0112] First precoding;

[0113] First code word.

[0114] See also Figure 2 , Figure 2 1 is a flow chart of a power control method provided in an embodiment of the present application, which is applied to a network device, and the network device may be a base station, etc. Figure 2 As shown, the power control method provided in this embodiment includes the following steps:

[0115] Step 201: receiving a first message sent by a relay device;

[0116] The first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by the terminal device;

[0117] Step 202: Determine a first sending parameter according to a channel measurement parameter;

[0118] Step 203: Send first indication information to the relay device, where the first indication information is used to instruct the relay device to use the first sending parameter to send a signal.

[0119] It should be understood that the channel measurement parameter is a channel measurement parameter obtained by measuring a target uplink reference signal sent by the terminal device when the power climbing count value reaches a preset count threshold value.

[0120] In one embodiment, sending first indication information to a relay device includes:

[0121] When it is determined that the following conditions are met, the first indication information is sent to the relay device:

[0122] If the terminal device sends a random access preamble code with a maximum transmission power and the relay device sends a random access preamble code to the network device with a first transmission parameter, there is a possibility that the terminal device can successfully perform random access.

[0123] In one embodiment, when the difference between the maximum transmission power and the first path loss is not less than the target receiving power, the terminal device has the possibility of successful random access, the target receiving power represents the minimum receiving power of the network device, and the first path loss is calculated based on the first sending parameter.

[0124] In one embodiment, after sending the first indication information to the relay device, the method further includes:

[0125] When the terminal device successfully accesses randomly or the power climbing count value of the terminal device reaches the preset maximum number of preamble code repetitions, fourth indication information is sent to the relay device, wherein the fourth indication information is used to instruct the relay device to use the second sending parameter to send the signal.

[0126] In one embodiment, before receiving the first message sent by the relay device, the method further includes:

[0127] Send configuration information to the relay device;

[0128] The configuration information includes at least one of the following:

[0129] Resource configuration of downlink signal group;

[0130] Resource configuration of the uplink reference signal group.

[0131] See also Figure 3 , Figure 3 1 is a flow chart of a power control method provided in an embodiment of the present application, which is applied to a terminal device. Figure 3 As shown, the power control method provided in this embodiment includes the following steps:

[0132] Step 301: When the power climbing count value reaches a preset count threshold value, a target uplink reference signal is sent to a relay device;

[0133] The target uplink reference signal is used by the relay device for measurement to obtain channel measurement parameters, wherein the power climb count value indicates the number of iterations by which the terminal device uses an open-loop power control method to adjust the transmission power of the random access preamble code during the random access process of the terminal device.

[0134] In one embodiment, when the power climbing count value reaches a preset count threshold value, sending a target uplink reference signal to a relay device includes:

[0135] Determine the i-th transmission power, where i is a positive integer not greater than a preset maximum number of preamble code repetition transmissions;

[0136] Sending a random access preamble to the relay device at an i-th transmission power, where the random access preamble is used by the relay device to forward to the network device at a second transmission parameter;

[0137] In the case that no random access response is received within the preset time window after sending the random access preamble, if i does not reach the preset counting threshold value, i is increased by one, and the step of determining the i-th transmitting power is returned to re-iterate the transmitting power and the step of sending the random access preamble with the i-th transmitting power to resend the random access preamble until i reaches the preset counting threshold value, and the target uplink reference signal is sent to the relay device.

[0138] In one embodiment, the preset maximum number of preamble code repetition transmission times is greater than a preset counting threshold value, and after sending a target uplink reference signal to the relay device, the method further includes:

[0139] If i does not reach the preset maximum number of preamble code repetition transmissions, i is incremented by one;

[0140] Determine a transmission power for sending a random access preamble for the i-th time, and send the random access preamble for the i-th time to the relay device, where the random access preamble is used for the relay device to forward to the network device with a first transmission parameter, where the first transmission parameter is different from the second transmission parameter;

[0141] If no random access response is received within the preset time window after sending the random access preamble, if i has not reached the preset maximum number of preamble repetitions, i is increased by one, and the transmission power of the i-th sending of the random access preamble is returned, and the step of sending the random access preamble to the relay device for the i-th time reiterates the transmission power and resends the random access preamble until i reaches the preset maximum number of preamble repetitions or the terminal device successfully accesses the random access, and stops sending the random access preamble to the relay device.

[0142] It should be understood that the above-mentioned failure to receive a random access response indicates that the random access was not successful, and i can continue to be increased by one to perform the next transmission power iteration and random access preamble code sending. If no corresponding random access response is received after the random access preamble code is sent at the transmission power of the random access preamble code for the preset counting threshold value, it indicates that the random access has not been successful. A target uplink reference signal can be sent to the relay device to facilitate the channel measurement of the relay device, so that the network device can adjust the transmission parameters according to the result of the channel measurement, and instruct the relay device to send signals with the first transmission parameters through the first indication information. Afterwards, the random access process can be continued between the network device and the terminal device. Specifically, when i (the latest updated i) does not reach the preset maximum number of repeated transmissions of the preamble code, i can be increased by one, and the process of determining the i-th transmission power and sending the random access preamble code at the i-th transmission power is returned to reiterate the transmission power and resend the random access preamble code. When a random access response is received, it indicates that the random access is successful, and the random access preamble code transmission can be stopped, or when i reaches the preset maximum number of repeated transmissions of the preamble code, the random access preamble code transmission is stopped, that is, the random access is stopped. It should be noted that the process of determining the transmission power of the random access preamble code for the i-th transmission in this example is similar to the process of determining the i-th transmission power, which will not be repeated.

[0143] In one embodiment, before determining the i-th transmission power, the method further includes: receiving a downlink signal group sent by a relay device using a second transmission parameter;

[0144] Determining the i-th transmission power includes:

[0145] Obtain target received power of network equipment;

[0146] Calculate the second path loss from the network device to the terminal device;

[0147] The i-th sending power is determined according to the target receiving power, the second path loss and i, wherein the i-th sending power is positively correlated with the target receiving power, the second path loss and i, the target receiving power represents the minimum receiving power of the network device, the second path loss is the result of subtracting the reference signal receiving power of the target downlink signal sent by the network device from the transmitting power of the target downlink signal by the terminal device, and the target downlink signal is any signal in the first downlink signal group whose reference signal receiving power is higher than the preset power threshold.

[0148] In one embodiment, the i-th transmission power is obtained by iterating the following formula:

[0149] P_RACH(i)=P_target+PL1+b×(i-1);

[0150] Among them, P_RACH(i) is the i-th transmission power (that is, the transmission power of the i-th random access preamble code), P_target is the target received power, b is the preset power climbing step, and PL1 represents the second path loss.

[0151] In one embodiment, sending a target uplink reference signal to a relay device includes:

[0152] A target uplink reference signal is sent to the relay device at an end time of the preset time window with a first transmit power, where the first transmit power is a transmit power configured by the relay device.

[0153] It can be understood that the first transmission power is the minimum power that triggers the relay device to perform channel detection (it can also be understood that it is the minimum power used by the terminal device to send the target reference signal and the relay device can receive the target uplink reference signal), and is less than or equal to the maximum transmission power of the terminal device.

[0154] In one embodiment, before determining the i-th transmission power, the method further includes:

[0155] receiving a system message sent by the relay device using a second sending parameter;

[0156] The system message includes at least one of the following:

[0157] Second indication information, the second indication information is used to indicate that the relay device has a channel detection capability;

[0158] third indication information, where the third indication information is used to indicate the transmit power of the target uplink reference signal (that is, it can be understood as the first transmit power);

[0159] Resource configuration of uplink reference signal group;

[0160] The target receive power of the network device.

[0161] In one embodiment, before sending a target uplink reference signal to a relay device, the method includes:

[0162] A target uplink reference signal is generated according to the random access preamble.

[0163] The following specific embodiments specifically illustrate the process of the above method.

[0164] The sixth generation of mobile communication (6G) wireless communication networks will bring a new paradigm: while ensuring high throughput, low latency and high reliability, it integrates communication, perception, positioning and cognition. The integration of communication and perception can not only reduce the signaling overhead of wireless networks to obtain CSI, but also build an intelligent wireless environment. One of the key factors to achieve perception is to detect the propagation direction of electromagnetic waves (or estimation of DOA), which is usually completed by various array-based receivers. Systems that simply combine perception and communication generally lack rapid on-site response to the electromagnetic environment because the two systems are still separate and it is difficult to achieve simultaneous detection and manipulation of electromagnetic waves on the same aperture. In addition, the interaction between the two systems may cause electromagnetic compatibility problems and increase the pressure on central processing and management networks. Since many classic DOA estimation algorithms, such as estimating signal parameters through rotation invariant technology (ESPRIT), multiple signal classification (MUSIC) and maximum likelihood (ML)-based methods, require large-scale arrays and use multi-channel transceivers for beamforming and channel information collection, traditional systems have problems such as large computational complexity, expensive hardware, complex structure and high power consumption.

[0165] Coding metamaterial technology can solve the above problems. It uses a digital coding sequence composed of digital bits "0" and "1" to characterize metasurface units with opposite reflection phases (such as 0° and 180°). Coding metamaterials can generally perform spatial and temporal coding to control parameters: the spatial coding sequence is used to synthesize the spatial phase profile to manipulate the propagation behavior of electromagnetic waves; the temporal coding sequence is used to adjust the temporal phase waveform to control the spectral distribution of electromagnetic waves. The coding sequences of two different dimensions can be combined into a 2-dimensional space-time coding (STC) matrix to achieve the manipulation of the spatial and spectral performance of electromagnetic waves. In terms of direction finding, compared with the traditional array-based multi-channel DOA estimation system, the space-time coding metamaterial proposed in the related art is simpler and lower cost, and only requires one RF channel; since no additional sensor circuits are introduced on the metasurface interface, the system integration is more space-saving and has better electromagnetic compatibility.

[0166] like Figure 4As shown in the figure, the intelligent metasurface relay based on coded metamaterials can, on the one hand, re-beamform the signal from the base station / terminal device to enhance the coverage of the blind area; on the other hand, it can sense the signal from the terminal device and measure the DOA. The relevant protocols take into account the energy consumption and interference of the terminal device, and perform power control on the uplink transmission, including open-loop power control to determine the PRACH transmission power, and closed-loop power control to determine the PUCCH or PUSCH power in the connected state. In the relevant open-loop power control scheme, the terminal device sends a random access preamble (preamble) at a certain power. If no random access response (MSG2) is received from the base station within a certain time window, it will increase a certain power and retransmit. PREAMBLE_POWER_RAMPING_COUNTER is used to record the number of times the random access preamble is resent until the RRC parameter preambleTransMax (maximum number of preamble repetitions, also known as the maximum number of transmissions) is reached. For open-loop power control, the terminal device will make corresponding power adjustments based on the response of the base station. Multiple interactions are required to achieve the appropriate transmission power. Generally, the system configures the maximum number of transmissions, preambleTransMax, such as Figure 5 That is, in the open-loop power control scheme of the related art, the terminal device performs corresponding transmission power adjustment according to the random access response of the network device forwarded by the relay device, and the number of power iterations (adjustments) required for open-loop power control is large, that is, the power control process is complex, resulting in poor power control efficiency. Based on this, the embodiment of the present application provides a power control method that can reduce the number of power adjustments, reduce the complexity of power control, and thus improve the power control efficiency.

[0167] The embodiment of the present application proposes a power control scheme that uses a relay device based on coded metamaterials to obtain a priori information of the terminal device through the direction measurement of the relay device to reduce the signaling interaction overhead. When an intelligent metasurface controlled by a base station is added to the wireless channel, the path loss (path loss) required for the transmission power calculation is a function of the phase / precoding / codeword of the intelligent metasurface. Therefore, the power adjustment of the terminal device can be reduced or avoided by adjusting the phase / precoding / codeword of the intelligent metasurface, that is, reducing the path loss. Since the intelligent metasurface is deployed close to the terminal device, some a priori information related to the terminal device can be obtained, which is conducive to reducing the lengthy repeated interactions in the power control process.

[0168] In the solution provided by the embodiment of the present application, there is a first node (i.e., a relay device) in the network, which can forward or reflect signals from a base station (i.e., a network device) or a terminal device, and can detect channels. The channel detection capability includes at least one of the following: (1) channel state information (CSI) acquisition; (2) direction measurement; (3) received power strength (RSRP) measurement. The terminal device is located within the coverage of the first node.

[0169] The basic idea of ​​the proposal of the embodiment of the present application is: the base station configures an uplink reference signal for the first node, which can be used to measure (detect) the channel parameters from the terminal device to the first node, that is, it can be used for uplink channel detection. When the open-loop power control reaches a certain power climbing count value threshold, the terminal device is triggered to initiate the channel detection process of the first node, that is, the terminal device sends a target uplink reference signal to the first node, and the first node performs channel detection based on the target uplink reference signal to obtain channel measurement parameters. The base station can receive the channel measurement parameters sent by the first node, determine the first sending parameters according to the channel measurement parameters, and send a first indication information to the relay device to instruct the relay device to use the first sending parameters for signal transmission. After receiving the first indication information, the relay device can use the first sending parameters for signal transmission.

[0170] The specific process is as follows Figure 6 As shown, combined Figure 7-Figure 8 , taking the downlink signal as SSB / CSI-RS as an example, the specific process of an embodiment of the present application is as follows:

[0171] Step 1: The first node receives configuration information sent by the base station. That is, the base station may send configuration information to the first node. The configuration information may be sent to the first node through signaling. The configuration information may include at least one of the following:

[0172] (1) resource configuration of an SSB / CSI-RS group and its associated random access opportunity (RO), the first node may use the second phase / precoding / codeword for forwarding / reflection, where the SSB / CSI-RS group is a beam within the coverage of the first node;

[0173] (2) Resource configuration of uplink reference signal group. The generation of reference signals in the uplink reference signal group (i.e., the first uplink reference signal group / the first reference signal group) is related to the preamble sequence. The uplink reference signal group is sent at a preset time window starting from the time when each RO associated with the SSB / CSI-RS group is sent in the uplink, such as Figure 6 The preset time window is the maximum time that the terminal device waits for receiving a random access response (RAR) from a base station. The uplink reference signal group is used for uplink channel detection of the first node.

[0174] Step 2: The first node receives multiple SSB / CSI-RS sent by the base station, that is, the base station can send multiple SSB / CSI-RS to the terminal device, and the multiple SSB / CSI-RS include the above-mentioned SSB / CSI-RS group.

[0175] Step 3: The first node forwards the SSB / CSI-RS group to the terminal device with the second phase / precoding / codeword.

[0176] Step 4: The terminal device receives a target SSB / CSI-RS that is higher than the first receiving power threshold (i.e., the preset power threshold). The first receiving power threshold can be understood as the minimum receiving power value at which the terminal device can decode the system message. The target SSB / CSI-RS is the SSB / CSI-RS that the terminal device can detect and select to access in the SSB / CSI-RS group. In addition, the terminal device can also obtain a system message (cell system message), and the system information may include at least one of the following:

[0177] Second indication information, the second indication information is used to indicate that the relay device has a channel detection capability and supports an open-loop power control process assisted by the first node;

[0178] The third indication information is used to indicate the transmit power of the target uplink reference signal (for example, the first transmit power, which is the minimum power value that triggers the first node to perform channel sounding and is less than the maximum transmit power of the terminal device);

[0179] Resource configuration of uplink reference signal group; generation of reference signals in the uplink reference signal group is related to the preamble sequence, and the uplink reference signal group transmission timing is the time interval of a preset time window from the time when each RO associated with the SSB / CSI-RS group is sent in the uplink;

[0180] The target received power of the base station.

[0181] It should be noted that the service range of the first node can be determined by identifying the identifier of the target SSB / CSI-RS. The terminal device can calculate the second path loss PL1 from the base station to the terminal device, and according to the target received power P_target of the base station, the second path loss PL1 and the preset power climbing step, the i-th transmission power P_RACH(i) can be obtained by the following formula, and then the power climbing count value can be updated;

[0182] P_RACH(i)=P_target+PL1+preset power ramp-up step×(i-1).

[0183] Step 5: The terminal device generates a preamble code and a target uplink reference signal (ie, the first uplink reference signal in the figure), where the target uplink reference signal is a reference signal in the above uplink reference signal group that is associated with the generated preamble sequence and is used for first node channel detection.

[0184] Step 6: The terminal device sends a random access preamble code to the first node using P_RACH(i).

[0185] Step 7: The first node forwards the random access preamble code of the terminal device to the base station with the second phase / precoding / codeword (ie, the second sending parameter).

[0186] Step 8: The terminal device cannot receive the random access response (RAR) from the base station within the first time window (preset time window), performs open-loop power control, adjusts the power increase according to the system configuration parameters, and updates the power increase count value.

[0187] Step 9: When the power climbing count value of the terminal device reaches the preset counting threshold value, the terminal device sends the target uplink reference signal at the first transmission power (i.e., the first power) at the end of the first time window. The first counting threshold value is the count of the first time that the terminal device performs power climbing to meet P_RACH(i) ≥ the first transmission power, which is less than or equal to the maximum number of repeated transmissions of the preamble code (preambleTransMax).

[0188] Step 10: The first node receives the target uplink reference signal, performs channel measurement, and obtains a channel measurement parameter of the first channel (i.e., a first channel parameter / first reference signal parameter), where the first channel is a channel between the terminal device and the first node. The channel measurement parameter of the first channel includes at least one of the following: CSI, transmission direction, RSRP, etc.

[0189] Step 11: The first node reports the channel measurement parameters and the index of the associated target SSB / target CSI-RS to the base station.

[0190] Step 12: The base station calculates the first phase / precoding / codeword of the first node to more accurately align with the terminal device based on the channel measurement parameters, and evaluates whether the terminal device has access possibility with the maximum transmission power P_max at the first phase / precoding / codeword (i.e., the first transmission parameter). The evaluation method is as follows:

[0191] Re-estimate the first path loss PL2 based on the first phase / precoding / codeword

[0192] If P_max-PL2≥P_target is calculated, it is determined that there is a possibility of access.

[0193] Step 13: If it is determined that there is an access possibility, the base station sends a first indication message to the first node, instructing the first node to use the first phase / precoding / codeword at the time-frequency position of the target SSB / CSI-RS in the next period, that is, the first node receives the first indication message and can send signals according to the first phase / precoding / codeword indicated by the first indication message.

[0194] Step 14: The base station and the terminal device continue the random access process.

[0195] Step 15: If access is successful or the maximum number of repeated transmissions of the preamble code is reached, the base station instructs the first node to restore to the second phase / precoding / codeword at the time-frequency position of the target SSB / CSI-RS in the next cycle.

[0196] Through the solution of the embodiment of the present application, the number of iterations of the existing open-loop power control scheme can be reduced. The terminal device only initiates the first node channel detection process under certain conditions, thereby minimizing the complexity of the process for the terminal device and reducing the impact of the base station changing the direction of the synchronization signal beam on the access of other users.

[0197] like Fig. 9 As shown, Fig. 9 is a schematic diagram of the structure of a power control device 900 provided in an embodiment of the present application, such as Fig. 9 As shown, applied to a relay device, the power control device 900 includes:

[0198] The first receiving module 901 is used to receive a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations in which the terminal device uses an open-loop power control method to adjust the transmission power of the random access preamble code during the random access process of the terminal device;

[0199] The measurement module 902 is used to measure the target uplink reference signal to obtain a channel measurement parameter;

[0200] A first sending module 903, configured to send a first message to a network device, where the first message includes a channel measurement parameter;

[0201] The second receiving module 904 is used to receive first indication information sent by the network device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, where the first sending parameter is obtained according to a channel measurement parameter.

[0202] In one embodiment, receiving first indication information sent by a network device includes: receiving first indication information sent by the network device when determining that the following conditions are met:

[0203] If the terminal device sends a random access preamble code with a maximum transmission power and the relay device sends a random access preamble code to the network device with a first transmission parameter, there is a possibility that the terminal device can successfully perform random access.

[0204] In one embodiment, when the difference between the maximum transmission power and the first path loss is not less than the target receiving power, the terminal device has the possibility of successful random access, the target receiving power represents the minimum receiving power of the network device, and the first path loss is calculated based on the first sending parameter.

[0205] In one embodiment, the power control device 900 further includes:

[0206] A fourth receiving module, configured to receive the random access preamble code sent by the terminal device for the i-th time before the first receiving module receives the target uplink reference signal sent by the terminal device when the power climbing count value reaches the preset count threshold value, where i is a positive integer not greater than the preset maximum number of preamble code repetitions;

[0207] The fourth sending module is used to send a random access preamble code to the network device with a second sending parameter, wherein the second sending parameter is different from the first sending parameter.

[0208] In one embodiment, the power control device 900 further includes:

[0209] A fifth receiving module, configured to receive a plurality of downlink signals sent by the network device before the fourth receiving module receives the random access preamble code sent by the terminal device for the i-th time, wherein the plurality of downlink signals include a downlink signal group, and the downlink signal group is a signal group preconfigured by the network device;

[0210] A fifth sending module, configured to send a downlink signal group to a terminal device using a second sending parameter;

[0211] Among them, the transmission power of the random access preamble code sent for the i-th time is positively correlated with the target receiving power of the network device, the second path loss from the network device to the terminal device and i. The target receiving power represents the minimum receiving power of the network device. The second path loss is the result of subtracting the reference signal receiving power of the terminal device for the target downlink signal from the transmission power of the target downlink signal sent by the network device. The target downlink signal is any signal in the downlink signal group whose reference signal receiving power is higher than the preset power threshold.

[0212] In one embodiment, the transmission power of the random access preamble code sent for the i-th time is obtained by iterating the following formula:

[0213] P_RACH(i)=P_target+PL1+b×(i-1);

[0214] Wherein, P_RACH(i) is the transmission power of the random access preamble code sent for the i-th time, P_target is the target received power, b is the preset power climbing step, and PL1 represents the second path loss.

[0215] In one embodiment, the first message also includes an index of the target downlink signal.

[0216] In one embodiment, the power control device 900 further includes:

[0217] A sixth sending module, configured to send a system message to the terminal device with a second sending parameter after the fifth receiving module receives the multiple downlink signals sent by the network device;

[0218] The system message includes at least one of the following:

[0219] Second indication information, the second indication information is used to indicate that the relay device has a channel detection capability;

[0220] third indication information, where the third indication information is used to indicate the transmit power of the target uplink reference signal;

[0221] Resource configuration of an uplink reference signal group, wherein the uplink reference signal group includes a target uplink reference signal, and the uplink reference signal group is used by a relay device to measure a channel from a terminal device to the relay device;

[0222] The target receive power of the network device.

[0223] In one embodiment, the power control device 900 further includes:

[0224] A sixth receiving module, wherein the first receiving module receives the configuration information sent by the network device before the target uplink reference signal sent by the terminal device when the power climbing count value reaches the preset count threshold value;

[0225] The configuration information includes at least one of the following:

[0226] Resource configuration of downlink signal group;

[0227] Resource configuration of the uplink reference signal group.

[0228] In one embodiment, the first sending parameter includes any one of the following:

[0229] First phase;

[0230] First precoding;

[0231] First code word.

[0232] The power control device 900 provided in this embodiment can implement each process of each embodiment of the above-mentioned power control method applied to the relay device. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be described here.

[0233] See also Fig.10 , Fig.10 is a schematic diagram of the structure of a power control device 1000 provided in an embodiment of the present application, such as Fig.10 As shown, applied to a network device, the power control device 1000 includes:

[0234] The third receiving module 1001 is used to receive a first message sent by a relay device, where the first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by a terminal device;

[0235] A first determining module 1002, configured to determine a first sending parameter according to a channel measurement parameter;

[0236] The second sending module 1003 is used to send first indication information to the relay device, where the first indication information is used to instruct the relay device to use the first sending parameter to send a signal.

[0237] In one embodiment, sending first indication information to a relay device includes:

[0238] When it is determined that the following conditions are met, the first indication information is sent to the relay device:

[0239] If the terminal device sends a random access preamble code with a maximum transmission power and the relay device sends a random access preamble code to the network device with a first transmission parameter, there is a possibility that the terminal device can successfully perform random access.

[0240] In one embodiment, when the difference between the maximum transmission power and the first path loss is not less than the target receiving power, the terminal device has the possibility of successful random access, the target receiving power represents the minimum receiving power of the network device, and the first path loss is calculated based on the first sending parameter.

[0241] In one embodiment, the power control device 100 further includes:

[0242] The seventh sending module is used to send fourth indication information to the relay device after the second sending module 1003 sends the first indication information to the relay device, when the terminal device randomly accesses successfully or the power climbing count value of the terminal device reaches a preset maximum number of preamble code repetitions, wherein the fourth indication information is used to instruct the relay device to use the second sending parameters to send signals.

[0243] In one embodiment, the power control device 100 further includes:

[0244] An eighth sending module, configured to send configuration information to the relay device before the third receiving module 1001 receives the first message sent by the relay device;

[0245] The configuration information includes at least one of the following:

[0246] Resource configuration of downlink signal group;

[0247] Resource configuration of the uplink reference signal group.

[0248] The power control device 1000 provided in this embodiment is capable of implementing each process of each embodiment of the above-mentioned power control method applied to network equipment. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be described here.

[0249] See also Fig.11 , Fig.11 1 is a schematic diagram of a power control device 1100 provided in an embodiment of the present application, which is applied to a terminal device, such as Fig.11 As shown, the power control device 1100 includes:

[0250] The third sending module 1101 is used to send a target uplink reference signal to the relay device when the power climbing count value reaches a preset counting threshold value, and the target uplink reference signal is used for the relay device to measure to obtain channel measurement parameters, wherein the power climbing count value indicates the number of iterations of the terminal device adjusting the transmission power of the random access preamble code using an open-loop power control method during the random access process of the terminal device.

[0251] In one embodiment, the third sending module 1101 includes:

[0252] A second determination module is used to determine the i-th transmission power, where i is a positive integer not greater than a preset maximum number of preamble code repetition transmission times;

[0253] a ninth sending module, configured to send a random access preamble to the relay device at an i-th sending power, where the random access preamble is used by the relay device to forward the random access preamble to the network device at a second sending parameter;

[0254] The first processing module is used to, when no random access response is received within a preset time window after sending the random access preamble code, if i does not reach the preset counting threshold value, increase i by one, return to the step of determining the i-th transmission power, re-iterate the transmission power, and re-send the random access preamble code with the i-th transmission power until i reaches the preset counting threshold value, and send the target uplink reference signal to the relay device.

[0255] In one embodiment, the preset maximum number of preamble code repetition transmission times is greater than a preset counting threshold value, and the power control device 1100 further includes:

[0256] A second processing module, configured to increase i by one after the third sending module 1101 sends the target uplink reference signal to the relay device if i does not reach a preset maximum number of preamble code repetition transmission times;

[0257] a third determining module, configured to determine a transmission power for sending a random access preamble code for the i-th time, a tenth sending module, configured to send a random access preamble code for the i-th time to the relay device, the random access preamble code being used for the relay device to forward to the network device with a first sending parameter, the first sending parameter being different from the second sending parameter;

[0258] The third processing module is used to, if no random access response is received within a preset time window after sending the random access preamble code, if i has not reached the preset maximum number of preamble code repetitions, increase i by one, return the transmission power of the i-th sending of the random access preamble code, and re-iterate the transmission power and resend the random access preamble code for the i-th sending of the random access preamble code to the relay device until i reaches the preset maximum number of preamble code repetitions or the terminal device successfully accesses the random access code, and stop sending the random access preamble code to the relay device.

[0259] In one embodiment, the power control device 1100 further includes:

[0260] A seventh receiving module, configured to receive a downlink signal group sent by the relay device with a second sending parameter before the second determining module determines the i-th sending power;

[0261] The second determination module includes:

[0262] An acquisition module, used to acquire a target received power of a network device;

[0263] A calculation module, used for calculating the second path loss from the network device to the terminal device;

[0264] A power determination module is used to determine the i-th transmission power according to the target reception power, the second path loss and i, wherein the i-th transmission power is positively correlated with the target reception power, the second path loss and i, the target reception power represents the minimum reception power of the network device, the second path loss is the result of subtracting the reference signal reception power of the terminal device for the target downlink signal from the transmission power of the target downlink signal sent by the network device, and the target downlink signal is any signal in the first downlink signal group whose reference signal reception power is higher than a preset power threshold.

[0265] In one embodiment, the i-th transmission power is obtained by iterating the following formula:

[0266] P_RACH(i)=P_target+PL1+b×(i-1);

[0267] Among them, P_RACH(i) is the i-th transmission power (that is, the transmission power of the i-th random access preamble code), P_target is the target received power, b is the preset power climbing step, and PL1 represents the second path loss.

[0268] In one embodiment, sending a target uplink reference signal to a relay device includes:

[0269] A target uplink reference signal is sent to the relay device at an end time of the preset time window with a first transmit power, where the first transmit power is a transmit power configured by the relay device.

[0270] In one embodiment, the power control device 1100 further includes:

[0271] An eighth receiving module, configured to receive a system message sent by the relay device using a second sending parameter before the second determining module determines the i-th sending power;

[0272] The system message includes at least one of the following:

[0273] Second indication information, the second indication information is used to indicate that the relay device has a channel detection capability;

[0274] third indication information, where the third indication information is used to indicate the transmit power of the target uplink reference signal (that is, it can be understood as the first transmit power);

[0275] Resource configuration of uplink reference signal group;

[0276] The target receive power of the network device.

[0277] In one embodiment, the power control device 1100 further includes:

[0278] The generating module is used to generate a target uplink reference signal according to a random access preamble code before the third sending module 1101 sends the target uplink reference signal to the relay device.

[0279] The power control device 1100 provided in this embodiment is capable of implementing each process of each embodiment of the above-mentioned power control method applied to the terminal equipment. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be described here.

[0280] An embodiment of the present application also provides an electronic device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, the various processes of the above-mentioned power control method embodiment applied to the first electronic device are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0281] For details, see Fig.12 An embodiment of the present application further provides an electronic device, which is a relay device, including a bus 1201, a transceiver 1202, an antenna 1203, a bus interface 1204, a processor 1205 and a memory 1206.

[0282] The processor 1205 is used for:

[0283] Receiving, by transceiver 1202, a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations of the terminal device using an open-loop power control method to adjust the transmission power of a random access preamble code during a random access process of the terminal device;

[0284] Measuring the target uplink reference signal to obtain channel measurement parameters;

[0285] Sending a first message to a network device through transceiver 1202, where the first message includes a channel measurement parameter;

[0286] The first indication information sent by the network device is received through the transceiver, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, and the first sending parameter is obtained according to the channel measurement parameter.

[0287] In one embodiment, receiving first indication information sent by a network device includes: receiving first indication information sent by the network device when determining that the following conditions are met:

[0288] If the terminal device sends a random access preamble code with a maximum transmission power and the relay device sends a random access preamble code to the network device with a first transmission parameter, there is a possibility that the terminal device can successfully perform random access.

[0289] In one embodiment, when the difference between the maximum transmission power and the first path loss is not less than the target receiving power, the terminal device has the possibility of successful random access, the target receiving power represents the minimum receiving power of the network device, and the first path loss is calculated based on the first sending parameter.

[0290] In one embodiment, the processor 1205 is further configured to:

[0291] Before receiving, by the transceiver, a target uplink reference signal sent by the terminal device when the power climbing count value reaches a preset count threshold value, receiving, by the transceiver, a random access preamble code sent by the terminal device for the i-th time, where i is a positive integer not greater than a preset maximum number of preamble code repetitions;

[0292] A random access preamble is sent to a network device by a transceiver using a second sending parameter, wherein the second sending parameter is different from the first sending parameter.

[0293] In one embodiment, the processor 1205 is further configured to:

[0294] Before receiving the random access preamble code sent by the terminal device for the i-th time through the transceiver, receiving multiple downlink signals sent by the network device through the transceiver, the multiple downlink signals include a downlink signal group, and the downlink signal group is a signal group pre-configured by the network device;

[0295] Sending a downlink signal group to the terminal device using a second sending parameter through a transceiver;

[0296] Among them, the transmission power of the random access preamble code sent for the i-th time is positively correlated with the target receiving power of the network device, the second path loss from the network device to the terminal device and i. The target receiving power represents the minimum receiving power of the network device. The second path loss is the result of subtracting the reference signal receiving power of the terminal device for the target downlink signal from the transmission power of the target downlink signal sent by the network device. The target downlink signal is any signal in the downlink signal group whose reference signal receiving power is higher than the preset power threshold.

[0297] In one embodiment, the transmission power of the random access preamble code sent for the i-th time is obtained by iterating the following formula:

[0298] P_RACH(i)=P_target+PL1+b×(i-1);

[0299] Wherein, P_RACH(i) is the transmission power of the random access preamble code sent for the i-th time, P_target is the target received power, b is the preset power climbing step, and PL1 represents the second path loss.

[0300] In one embodiment, the first message also includes an index of the target downlink signal.

[0301] In one embodiment, the processor is further configured to:

[0302] After receiving multiple downlink signals sent by the network device through the transceiver, sending a system message to the terminal device through the transceiver with a second sending parameter;

[0303] The system message includes at least one of the following:

[0304] Second indication information, the second indication information is used to indicate that the relay device has a channel detection capability;

[0305] third indication information, where the third indication information is used to indicate the transmit power of the target uplink reference signal;

[0306] Resource configuration of an uplink reference signal group, wherein the uplink reference signal group includes a target uplink reference signal, and the uplink reference signal group is used by a relay device to measure a channel from a terminal device to the relay device;

[0307] The target receive power of the network device.

[0308] In one embodiment, the processor is further configured to:

[0309] Before receiving, by the transceiver, a target uplink reference signal sent by the terminal device when the power climbing count value reaches a preset count threshold value, receiving, by the transceiver, configuration information sent by the network device;

[0310] The configuration information includes at least one of the following:

[0311] Resource configuration of downlink signal group;

[0312] Resource configuration of the uplink reference signal group.

[0313] In one embodiment, the first sending parameter includes any one of the following:

[0314] First phase;

[0315] First precoding;

[0316] First code word.

[0317] exist Fig.12 In the embodiment, the bus architecture (represented by bus 1201) may include any number of interconnected buses and bridges, and bus 1201 links various circuits including one or more processors represented by processor 1205 and memory represented by memory 1206. Bus 1201 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 1204 provides an interface between bus 1201 and transceiver 1202. Transceiver 1202 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 1205 is transmitted on a wireless medium via antenna 1203, and further, antenna 1203 also receives data and transmits the data to processor 1205.

[0318] The processor 1205 is responsible for managing the bus 1201 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 1206 can be used to store data used by the processor 1205 when performing operations.

[0319] Optionally, the processor 1205 may be a CPU, an ASIC, an FPGA or a CPLD.

[0320] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the power control method embodiment applied to the relay device is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium is a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0321] An embodiment of the present application also provides an electronic device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, the various processes of the above-mentioned power control method embodiment applied to the second electronic device are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0322] For details, see Fig.13 As shown, an embodiment of the present application further provides an electronic device, which is a network device, including a bus 1301, a transceiver 1302, an antenna 1303, a bus interface 1304, a processor 1305 and a memory 1306.

[0323] The processor is used to:

[0324] Receiving, by a transceiver, a first message sent by a relay device, the first message including a channel measurement parameter obtained by measuring a target uplink reference signal sent by a terminal device;

[0325] Determining a first sending parameter according to the channel measurement parameter;

[0326] The first indication information is sent to the relay device through the transceiver, where the first indication information is used to instruct the relay device to use the first sending parameter to send a signal.

[0327] In one embodiment, sending first indication information to a relay device includes:

[0328] When it is determined that the following conditions are met, the first indication information is sent to the relay device:

[0329] If the terminal device sends a random access preamble code with a maximum transmission power and the relay device sends a random access preamble code to the network device with a first transmission parameter, there is a possibility that the terminal device can successfully perform random access.

[0330] In one embodiment, when the difference between the maximum transmission power and the first path loss is not less than the target receiving power, the terminal device has the possibility of successful random access, the target receiving power represents the minimum receiving power of the network device, and the first path loss is calculated based on the first sending parameter.

[0331] In one embodiment, the processor is further configured to:

[0332] After sending the first indication information to the relay device through the transceiver, when the terminal device successfully accesses randomly or the power climbing count value of the terminal device reaches the preset maximum number of preamble code repetitions, the fourth indication information is sent to the relay device through the transceiver, wherein the fourth indication information is used to instruct the relay device to use the second sending parameters to send signals.

[0333] In one embodiment, the processor is further configured to:

[0334] Before receiving the first message sent by the relay device through the transceiver, sending configuration information to the relay device through the transceiver;

[0335] The configuration information includes at least one of the following:

[0336] Resource configuration of downlink signal group;

[0337] Resource configuration of the uplink reference signal group.

[0338] exist Fig.13 In the embodiment, the bus architecture (represented by bus 1301) may include any number of interconnected buses and bridges, and bus 1301 links various circuits including one or more processors represented by processor 1305 and memory represented by memory 1306. Bus 1301 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 1304 provides an interface between bus 1301 and transceiver 1302. Transceiver 1302 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 1305 is transmitted on a wireless medium via antenna 1303, and further, antenna 1303 also receives data and transmits the data to processor 1305.

[0339] The processor 1305 is responsible for managing the bus 1301 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 1306 can be used to store data used by the processor 1305 when performing operations.

[0340] Optionally, the processor 1305 may be a CPU, an ASIC, an FPGA or a CPLD.

[0341] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the power control method embodiment applied to the network device is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium, such as ROM, RAM, disk or CD, etc.

[0342] For details, see Fig.14 An embodiment of the present application further provides an electronic device, which is a terminal device, including a bus 1401, a transceiver 1402, an antenna 1403, a bus interface 1404, a processor 1405 and a memory 1406.

[0343] The processor is used to:

[0344] When the power climbing count value reaches the preset counting threshold value, the target uplink reference signal is sent to the relay device through the transceiver, and the target uplink reference signal is used for the relay device to measure to obtain the channel measurement parameters, wherein the power climbing count value indicates that during the random access process of the terminal device, the terminal device uses an open-loop power control method to adjust the number of iterations of the transmission power of the random access preamble code.

[0345] In one embodiment, the processor is specifically configured to:

[0346] Determine the i-th transmission power, where i is a positive integer not greater than a preset maximum number of preamble code repetition transmissions;

[0347] Sending a random access preamble to the relay device using the transceiver at the i-th transmission power, where the random access preamble is used for the relay device to forward to the network device using the second transmission parameter;

[0348] In the case that no random access response is received within the preset time window after sending the random access preamble, if i does not reach the preset counting threshold value, i is increased by one, and the step of determining the i-th transmitting power is returned to re-iterate the transmitting power and the step of sending the random access preamble with the i-th transmitting power to resend the random access preamble until i reaches the preset counting threshold value, and the target uplink reference signal is sent to the relay device.

[0349] In one embodiment, the preset maximum number of preamble code repetition transmission times is greater than a preset counting threshold value, and the processor is further configured to:

[0350] After sending the target uplink reference signal to the relay device, if i does not reach the preset maximum number of preamble code repetition transmission times, i is increased by one;

[0351] determining a transmission power for sending a random access preamble for the i-th time, a tenth transmission module, configured to send a random access preamble for the i-th time to the relay device, the random access preamble being used for the relay device to forward to the network device with a first transmission parameter, the first transmission parameter being different from the second transmission parameter;

[0352] If no random access response is received within the preset time window after sending the random access preamble, if i has not reached the preset maximum number of preamble repetitions, i is increased by one, and the transmission power of the i-th sending of the random access preamble is returned, and the step of sending the random access preamble to the relay device for the i-th time reiterates the transmission power and resends the random access preamble until i reaches the preset maximum number of preamble repetitions or the terminal device successfully accesses the random access, and stops sending the random access preamble to the relay device.

[0353] In one embodiment, the processor is further configured to:

[0354] Before determining the i-th transmission power, receiving, by a transceiver, a downlink signal group sent by a relay device using a second transmission parameter;

[0355] The processor is specifically used to:

[0356] Obtain target received power of network equipment;

[0357] Calculate the second path loss from the network device to the terminal device;

[0358] The i-th sending power is determined according to the target receiving power, the second path loss and i, wherein the i-th sending power is positively correlated with the target receiving power, the second path loss and i, the target receiving power represents the minimum receiving power of the network device, the second path loss is the result of subtracting the reference signal receiving power of the target downlink signal sent by the network device from the transmitting power of the target downlink signal by the terminal device, and the target downlink signal is any signal in the downlink signal group whose reference signal receiving power is higher than the preset power threshold.

[0359] In one embodiment, the i-th transmission power is obtained by iterating the following formula:

[0360] P_RACH(i)=P_target+PL1+b×(i-1);

[0361] Among them, P_RACH(i) is the i-th transmission power (that is, the transmission power of the i-th random access preamble code), P_target is the target received power, b is the preset power climbing step, and PL1 represents the second path loss.

[0362] In one embodiment, sending a target uplink reference signal to a relay device includes:

[0363] A target uplink reference signal is sent to the relay device at an end time of the preset time window with a first transmit power, where the first transmit power is a transmit power configured by the relay device.

[0364] In one embodiment, the processor is further configured to:

[0365] Before determining the i-th transmission power, receiving, by the transceiver, a system message sent by the relay device using a second transmission parameter;

[0366] The system message includes at least one of the following:

[0367] Second indication information, the second indication information is used to indicate that the relay device has a channel detection capability;

[0368] third indication information, where the third indication information is used to indicate the transmit power of the target uplink reference signal (that is, it can be understood as the first transmit power);

[0369] Resource configuration of uplink reference signal group;

[0370] The target receive power of the network device.

[0371] In one embodiment, the processor is further configured to:

[0372] Before sending the target uplink reference signal to the relay device through the transceiver, the target uplink reference signal is generated according to the random access preamble code.

[0373] exist Fig.14In the embodiment, the bus architecture (represented by bus 1401) may include any number of interconnected buses and bridges, and bus 1401 links various circuits including one or more processors represented by processor 1405 and memory represented by memory 1406. Bus 1401 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 1404 provides an interface between bus 1401 and transceiver 1402. Transceiver 1402 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 1405 is transmitted on a wireless medium via antenna 1403, and further, antenna 1403 also receives data and transmits the data to processor 1405.

[0374] The processor 1405 is responsible for managing the bus 1401 and general processing, and may also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 1406 may be used to store data used by the processor 1405 when performing operations.

[0375] Optionally, the processor 1405 may be a CPU, an ASIC, an FPGA or a CPLD.

[0376] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the power control method embodiment applied to the terminal device is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium, such as ROM, RAM, disk or optical disk, etc.

[0377] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0378] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of each embodiment of the present application.

[0379] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A power control method, characterized in that: Applied to a relay device, the method comprises: A target uplink reference signal sent by a receiving terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations of the terminal device using an open-loop power control method to adjust the transmission power of a random access preamble code during a random access process of the terminal device; Measuring the target uplink reference signal to obtain a channel measurement parameter; Sending a first message to a network device, where the first message includes the channel measurement parameter; Receive first indication information sent by the network device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, where the first sending parameter is obtained according to the channel measurement parameter.

2. The method according to claim 1, characterized in that The receiving the first indication information sent by the network device includes: receiving the first indication information sent by the network device when determining that the following conditions are met: If the terminal device sends a random access preamble code at a maximum transmission power and the relay device sends the random access preamble code to the network device with the first transmission parameter, the terminal device may successfully perform random access.

3. The method according to claim 2, characterized in that When the difference between the maximum transmission power and the first path loss is not less than the target receiving power, the terminal device has the possibility of successful random access, the target receiving power represents the minimum receiving power of the network device, and the first path loss is calculated based on the first sending parameter.

4. The method according to claim 1, characterized in that: Before receiving a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, the method further includes: Receiving the random access preamble code sent by the terminal device for the i-th time, where i is a positive integer not greater than a preset maximum number of preamble code repetitions; The random access preamble is sent to the network device using a second sending parameter, wherein the second sending parameter is different from the first sending parameter.

5. The method according to claim 4, characterized in that Before the receiving the random access preamble code sent by the terminal device for the i-th time, the method further includes: Receiving a plurality of downlink signals sent by the network device, the plurality of downlink signals comprising a downlink signal group, the downlink signal group being a signal group preconfigured by the network device; Sending the downlink signal group to the terminal device using the second sending parameter; Among them, the transmission power of the random access preamble code sent for the i-th time is positively correlated with the target receiving power of the network device, the second path loss from the network device to the terminal device and i, the target receiving power represents the minimum receiving power of the network device, the second path loss is the result of subtracting the reference signal receiving power of the terminal device for the target downlink signal from the transmission power of the target downlink signal sent by the network device, and the target downlink signal is any signal in the downlink signal group whose reference signal receiving power is higher than the preset power threshold.

6. The method according to claim 5, characterized in that The transmission power of the random access preamble code sent for the i-th time is obtained by iterating the following formula: P_RACH(i)=P_target+PL1+b×(i-1); Among them, the P_RACH(i) is the transmission power of the random access preamble code sent for the i-th time, the P_target is the target received power, b is the preset power climbing step, and the PL1 represents the second path loss.

7. The method according to claim 5, characterized in that The first message also includes the index of the target downlink signal.

8. The method according to claim 5, characterized in that After receiving the multiple downlink signals sent by the network device, the method further includes: Sending a system message to the terminal device using the second sending parameter; The system message includes at least one of the following: second indication information, where the second indication information is used to indicate that the relay device has a channel detection capability; third indication information, where the third indication information is used to indicate the transmit power of the target uplink reference signal; Resource configuration of an uplink reference signal group, wherein the uplink reference signal group includes the target uplink reference signal, and the uplink reference signal group is used by the relay device to measure a channel from the terminal device to the relay device; The target received power of the network device.

9. The method according to claim 1, characterized in that: Before receiving a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, the method further includes: Receiving configuration information sent by the network device; The configuration information includes at least one of the following: Resource configuration of downlink signal group; Resource configuration of the uplink reference signal group.

10. The method according to any one of claims 1 to 9, characterized in that The first sending parameter includes any one of the following: First phase; First precoding; First code word.

11. A power control method, characterized in that: Applied to a network device, the method comprises: Receiving a first message sent by a relay device, wherein the first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by a terminal device; Determine a first sending parameter according to the channel measurement parameter; First indication information is sent to the relay device, where the first indication information is used to instruct the relay device to use the first sending parameter to send a signal.

12. A power control method, characterized in that: Applied to a terminal device, the method comprises: When the power climbing count value reaches a preset counting threshold value, a target uplink reference signal is sent to the relay device, and the target uplink reference signal is used by the relay device to perform measurements to obtain channel measurement parameters, wherein the power climbing count value indicates the number of iterations during the random access process of the terminal device that the terminal device uses an open-loop power control method to adjust the transmission power of the random access preamble code.

13. The method according to claim 12, characterized in that The step of sending a target uplink reference signal to a relay device when the power climbing count value reaches a preset count threshold value comprises: Determine the i-th transmission power, where i is a positive integer not greater than a preset maximum number of preamble code repetition transmissions; Sending a random access preamble to the relay device at an i-th transmission power, where the random access preamble is used by the relay device to forward to the network device at a second transmission parameter; In the case that no random access response is received within the preset time window after sending the random access preamble code, if i does not reach the preset counting threshold value, i is increased by one, and the step of determining the i-th transmitting power is returned to re-iterate the transmitting power and the step of sending the random access preamble code with the i-th transmitting power to resend the random access preamble code until i reaches the preset counting threshold value, and the target uplink reference signal is sent to the relay device.

14. The method according to claim 13, characterized in that The preset maximum number of preamble code repetition transmission times is greater than the preset counting threshold value, and after sending the target uplink reference signal to the relay device, the method further includes: If i does not reach the preset maximum number of preamble code repetition transmissions, i is incremented by one; determining a transmission power for sending the random access preamble code for the i-th time, and sending the random access preamble code for the i-th time to the relay device, wherein the random access preamble code is used for the relay device to forward to the network device with a first transmission parameter, and the first transmission parameter is different from the second transmission parameter; In the case that no random access response is received within the preset time window after sending the random access preamble code, if i has not reached the preset maximum number of preamble code repetitions, i is incremented by one, and the transmission power of the i-th transmission of the random access preamble code is returned, and the step of sending the random access preamble code to the relay device for the i-th time reiterates the transmission power and resends the random access preamble code until i reaches the preset maximum number of preamble code repetitions or the terminal device successfully accesses the random access, and stops sending the random access preamble code to the relay device.

15. A power control device, characterized in that: Applied to a relay device, the device comprises: A first receiving module, configured to receive a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations during which the terminal device uses an open-loop power control method to adjust the transmission power of a random access preamble code during a random access process of the terminal device; A measurement module, used to measure the target uplink reference signal to obtain a channel measurement parameter; A first sending module, configured to send a first message to a network device, wherein the first message includes the channel measurement parameter; The second receiving module is used to receive first indication information sent by the network device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, and the first sending parameter is obtained according to the channel measurement parameter.

16. A power control device, characterized in that: Applied to network equipment, the device comprises: A third receiving module is used to receive a first message sent by the relay device, where the first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by the terminal device; A first determining module, configured to determine a first sending parameter according to the channel measurement parameter; The second sending module is used to send first indication information to the relay device, where the first indication information is used to instruct the relay device to use the first sending parameter to send a signal.

17. A power control device, characterized in that: Applied to a terminal device, the device comprises: The third sending module is used to send a target uplink reference signal to the relay device when the power climbing count value reaches a preset counting threshold value, and the target uplink reference signal is used by the relay device to measure to obtain channel measurement parameters, wherein the power climbing count value indicates the number of iterations of the terminal device adjusting the transmission power of the random access preamble code using an open-loop power control method during the random access process of the terminal device.

18. An electronic device, characterized in that: The electronic device is a relay device, including a transceiver and a processor. The processor is configured to: Receiving, by the transceiver, a target uplink reference signal sent by a terminal device when a power climbing count value reaches a preset count threshold value, wherein the power climbing count value indicates the number of iterations of the terminal device using an open-loop power control method to adjust the transmission power of a random access preamble code during a random access process of the terminal device; Measuring the target uplink reference signal to obtain a channel measurement parameter; Sending a first message to a network device through the transceiver, wherein the first message includes the channel measurement parameter; The transceiver receives first indication information sent by the network device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal, and the first sending parameter is obtained according to the channel measurement parameter.

19. An electronic device, characterized in that: The electronic device is a network device, including a transceiver and a processor. The processor is configured to: Receiving, by the transceiver, a first message sent by a relay device, wherein the first message includes a channel measurement parameter obtained by measuring a target uplink reference signal sent by a terminal device; Determine a first sending parameter according to the channel measurement parameter; The transceiver sends first indication information to the relay device, where the first indication information is used to instruct the relay device to use a first sending parameter to send a signal.

20. An electronic device, characterized in that: The electronic device is a terminal device, including a transceiver and a processor. The processor is configured to: When the power climbing count value reaches a preset count threshold value, a target uplink reference signal is sent to the relay device through the transceiver, and the target uplink reference signal is used by the relay device to measure to obtain channel measurement parameters, wherein the power climbing count value indicates the number of iterations of the terminal device using an open-loop power control method to adjust the transmission power of the random access preamble code during the random access process of the terminal device.

21. An electronic device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the program implements the steps of the method according to any one of claims 1 to 10, or implements the steps of the method according to any one of claims 11, or implements the steps of the method according to any one of claims 12 to 14.

22. A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the computer program implements the steps of the method described in any one of claims 1 to 10, or implements the steps of the method described in any one of claims 11, or implements the steps of the method described in any one of claims 12 to 14.

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