Communication system power control method and device, equipment and storage medium

Abstract

The invention provides a communication system power control method and device, equipment and a storage medium, and the method comprises the steps: determining first initial power for transmitting an uplink random access signal according to uplink common channel power indication information transmitted by a satellite, and transmitting the uplink random access signal through a common channel according to the first initial power; when it is confirmed that the random access response sent by the satellite is not received, the uplink random access signal is sent again by using the preset maximum transmitting power of the uplink of the public channel; the method is used for accurately controlling the power of a public channel and a dedicated channel, reducing the time delay of a communication system, reducing the transmitting power of the system to the greatest extent on the premise of ensuring the communication quality, and finally achieving the purposes of reducing the power consumption, reducing the time delay and prolonging the standby time.

Description

Technical Field

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

[0002] Power control technology is a key technology to ensure the normal operation of the system, improve system capacity and reduce harmful interference to other systems. Effective power control technology needs to minimize the terminal and satellite transmission power while ensuring the quality of user communication, so as to reduce system interference, increase system margin and extend the service life of terminal and satellite batteries. However, compared with the wireless channels of terrestrial mobile communication systems, satellite wireless channels have longer transmission distances, longer propagation delays and more complex channel environments. In addition, due to the limited power of satellites, it is more difficult to control the power of satellites than to control the power of ground base stations. Therefore, the power control method in terrestrial mobile communication systems cannot be applied to satellite communication systems.

[0003] A multiple ramping mechanism is used for power control in the 5G communication system. When the terminal initiates random access and does not receive a random access reply message, the terminal increases the transmit power of the random access channel by one step and re-initiates random access. If the random access reply message is not received again, the power is increased by another step and re-sent. The above-mentioned multiple power ramping mechanism will bring a large access delay and is not suitable for satellite communication systems with large transmission delays. If the maximum transmit power is directly used for one access, it will increase terminal power consumption, waste energy, and may also cause harmful interference to other systems. Summary of the invention

[0004] The present application provides a communication system power control method, device, equipment and storage medium, which are used to accurately control the power of public channels and dedicated channels, reduce the delay of the communication system, and can minimize the system's transmission power while ensuring communication quality, ultimately achieving the purpose of reducing power consumption, reducing delay, and increasing standby time.

[0005] In a first aspect, the present application provides a communication system power control method, applied to a terminal, comprising:

[0006] Determine a first initial power for sending an uplink random access signal according to the uplink common channel power indication information sent by the satellite, and send the uplink random access signal through the common channel according to the first initial power;

[0007] When it is confirmed that no random access response sent by the satellite is received, the uplink random access signal is sent again using the preset common channel uplink maximum transmission power.

[0008] In one or more possible embodiments, after the uplink random access signal is sent again using the preset common channel uplink maximum transmit power, the method further includes:

[0009] Confirm receipt of the random access response sent by the satellite, use the maximum uplink transmission power of the common channel, and perform initial data transmission on the uplink dedicated channel.

[0010] In one or more possible embodiments, after sending an uplink random access signal through a common channel according to the first initial power, the method further includes:

[0011] When receiving a random access response sent by the satellite, determining a second initial power of the uplink dedicated channel according to the dedicated channel power indication information in the random access response;

[0012] The second initial power is used to initially transmit data on an uplink dedicated channel.

[0013] In one or more possible embodiments, the uplink common channel power indication information is determined according to a downlink broadcast message sent by the satellite through a common channel.

[0014] In one or more possible embodiments, determining the first initial power for sending an uplink random access signal according to uplink common channel power indication information sent by a satellite includes:

[0015] Determine the path loss of satellites sending downlink broadcast messages through common channels;

[0016] Determining a first expected power according to uplink common channel power indication information sent by the satellite;

[0017] A first initial power for sending an uplink random access signal is determined according to the first expected power and the path loss.

[0018] In one or more possible embodiments, determining the second initial power of the uplink dedicated channel includes:

[0019] Determine a second expected power according to the dedicated channel power indication information;

[0020] determining a path loss for a satellite to send the random access response;

[0021] A second initial power of an uplink dedicated channel is determined according to the second expected power and the path loss.

[0022] In one or more possible embodiments, using the maximum uplink transmission power of the common channel to initially transmit data on the uplink dedicated channel includes:

[0023] Determining the third initial power of the uplink dedicated channel as the common channel uplink maximum transmit power;

[0024] The maximum uplink transmission power of the common channel is used to initially transmit data on the uplink dedicated channel.

[0025] In one or more possible embodiments, it further includes:

[0026] adjusting the power of subsequent data transmission via the uplink dedicated channel according to an uplink closed-loop power control method;

[0027] Data is transmitted according to the adjusted power.

[0028] In a second aspect, the present application also provides a communication system power control method, applied to a satellite, comprising:

[0029] Sending a downlink broadcast message to a terminal using a fixed transmission power; the downlink broadcast message includes uplink common channel power indication information;

[0030] When receiving an uplink random access signal sent by a terminal, sending a random access response message to the terminal through a common channel; the random access response information includes dedicated channel power indication information;

[0031] The data is initially transmitted using the preset initial transmission power of the downlink dedicated channel.

[0032] In a third aspect, the present application further provides a communication system power control device, applied to a terminal, the device comprising:

[0033] A signal sending module, used to determine a first initial power for sending an uplink random access signal according to the uplink common channel power indication information sent by the satellite, and send the uplink random access signal through the common channel according to the first initial power;

[0034] The response determination module is used to send the uplink random access signal again using the preset common channel uplink maximum transmission power when confirming that the random access response sent by the satellite has not been received.

[0035] In a fourth aspect, the present application further provides a communication system power control device, applied to a satellite, the device comprising:

[0036] A broadcast transmission module, configured to transmit a downlink broadcast message to a terminal using a fixed transmission power; the downlink broadcast message includes uplink common channel power indication information;

[0037] A response message sending module, configured to send a random access response message to the terminal via a common channel upon receiving an uplink random access signal sent by the terminal; the random access response message includes dedicated channel power indication information;

[0038] The data transmission module is used to perform initial data transmission using the initial transmission power of the preset downlink dedicated channel.

[0039] In a fifth aspect, the present application further provides a communication system power control device, the device comprising:

[0040] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the communication system power control method as described in any one of the first aspect or the second aspect.

[0041] In a sixth aspect, the present application further provides a storage medium storing a computer program for causing a computer to execute a method as described in any one of the first aspect or the second aspect.

[0042] According to a communication system power control method, device, equipment and storage medium provided in the present application, the power of public channels and dedicated channels can be accurately controlled, the delay of the communication system can be reduced, and the system's transmission power can be reduced to the greatest extent while ensuring the communication quality, ultimately achieving the purpose of reducing power consumption, reducing delay and increasing standby time. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0044] Figure 1 A schematic diagram of an application environment provided according to an embodiment;

[0045] Figure 2 A flowchart of a communication system power control method applied to a terminal according to an embodiment;

[0046] Figure 3 A flowchart of terminal data transmission provided according to an embodiment;

[0047] Figure 4 A flowchart for determining a first initial power according to an embodiment;

[0048] Figure 5A flowchart for determining a second initial power according to an embodiment;

[0049] Figure 6 A flowchart of terminal data transmission provided according to an embodiment;

[0050] Figure 7 A flowchart of a power control method for a communication system applied to a satellite according to an embodiment;

[0051] Figure 8 A flowchart of interaction between a satellite and a terminal provided according to an embodiment;

[0052] Fig. 9 A module diagram of a communication system power control device applied to a terminal according to an embodiment;

[0053] Fig.10 A module diagram of a power control device for a communication system applied to a satellite according to an embodiment;

[0054] Fig.11 A module diagram of a communication system power control device provided according to an embodiment;

[0055] Fig.12 A module diagram of a communication system power control storage medium provided according to an embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] Satellite Internet has the advantages of wide coverage and little impact from natural disasters and physical attacks. It can be deeply integrated with the ground mobile communication network to make up for the shortcomings of insufficient coverage of the ground mobile communication network. It forms a fusion network system with complementary advantages, close integration, and three-dimensional layering with the ground mobile communication network, and ultimately realizes the transmission and interaction of information on a global scale. Satellite communication is one of the important applications of satellite Internet, mainly referring to data communication through or with the help of satellites, which can be widely used in mobile users, remote operations, and related cutting-edge application fields.

[0058] The terminal involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Station), a mobile station (Mobile Station), a mobile station (Mobile), a remote station (Remote Station), an access point (Access Point), a remote terminal device (Remote Terminal), an access terminal device (Access Terminal), a user terminal device (User Terminal), a user agent (User Agent), and a user device (User Device), but is not limited in the embodiments of the present application.

[0059] Among the related technologies, power control technology is a key technology to ensure the normal operation of the system, improve system capacity and reduce harmful interference to other systems. Effective power control technology needs to minimize the terminal and satellite transmission power to the greatest extent while ensuring the quality of user communications, so as to reduce system interference, increase system margin and extend the service life of terminal and satellite batteries.

[0060] In the 5G communication system, multiple ramping mechanisms are used for power control. When the terminal initiates random access and does not receive a random access reply message, the terminal increases the transmit power of the random access channel by one step and re-initiates random access; if the random access reply message is not received again, the power is increased by another step and re-sent; however, compared with the wireless channels of terrestrial mobile communication systems, the transmission distance of satellite wireless channels is longer, the propagation delay is longer, and the channel environment is more complex. The above-mentioned multiple power ramping mechanism will bring a large access delay and is not suitable for satellite communication systems with large transmission delays. If the maximum transmit power is directly used for one access, it will increase the terminal power consumption, waste energy, and may also cause harmful interference to other systems. In addition, due to the limited satellite power, it is more difficult to control the power of the satellite than to control the power of the ground base station. Therefore, the power control method in the terrestrial mobile communication system is not applicable to the satellite communication system.

[0061] Based on the above problems, the present application provides a communication system power control method, device, equipment and storage medium, which are used to achieve precise control of the power of public channels and dedicated channels, reduce the delay of the communication system, and minimize the system's transmission power while ensuring communication quality, ultimately achieving the purpose of reducing power consumption, reducing delay and increasing standby time.

[0062] like Figure 1 As shown, it is a schematic diagram of an application environment according to an embodiment of the present application, and the application environment includes multiple satellites located on an orbital plane in a satellite communication system and terminals communicating with the satellites, illustratively including satellite 102_1, satellite 102_2, ..., satellite 102_N in the figure, wherein N is a positive integer, and the size of N is actually determined according to specific needs and scenarios. Terminal 101 communicates with other destination terminals 103 via satellite; for example, terminal 101 can send data to satellite 102_2 via an uplink dedicated channel, and when satellite 102_2 receives the data sent by terminal 101, it sends the data to terminal 103 via a downlink dedicated channel. It should be noted that the above system architecture is only an example of a system architecture applicable to an embodiment of the present invention. The system architecture applicable to the embodiment of the present invention is compared. Figure 1 The system architecture shown may also add other entities, or reduce some entities, which will not be described in detail here.

[0063] The present application provides a communication system power control method, which is applied to a terminal, such as Figure 2 As shown, including:

[0064] Step 201, determining a first initial power for sending an uplink random access signal according to uplink common channel power indication information sent by a satellite, and sending the uplink random access signal through a common channel according to the first initial power;

[0065] In one or more possible embodiments, the uplink common channel power indication information is determined based on a downlink broadcast message sent by the satellite through the common channel; the terminal first receives a downlink broadcast message sent by the satellite through the common channel, the downlink broadcast message carries the power indication information of the terminal uplink common channel, the power indication information of the uplink common channel may be a preset fixed value, a preset range, any one of the formulas for determining the power based on the distance between the satellite and the terminal, or other conditions that can determine the expected power of the satellite, which are not listed one by one here; based on the uplink common channel power indication information, the first initial power of the uplink random access signal sent by the terminal through the common channel can be determined, after determining the first initial power, the terminal uses the first initial power to send the uplink random access signal to the satellite, and waits for receiving a random access response returned by the satellite.

[0066] Step 202, when confirming that no random access response sent by the satellite is received, an uplink random access signal is sent again using a preset common channel uplink maximum transmission power;

[0067] In one or more possible embodiments, after the terminal has sent an uplink random access signal to the satellite through a common channel and starts timing, it is found that no random access response sent by the satellite is received within a preset time, which means that the first initial power for sending the above-mentioned random access signal is relatively small and cannot support the random access signal being sent from the terminal to the satellite. In order to reduce the access time between the terminal and the satellite, the uplink random access signal is directly sent to the satellite again using the preset maximum transmission power of the common channel uplink.

[0068] Based on a communication system power control method provided in the present application, the power of public channels and dedicated channels can be accurately controlled, the delay of the communication system can be reduced, and the system's transmission power can be reduced to the greatest extent while ensuring the communication quality, ultimately achieving the purpose of reducing power consumption, reducing delay, and increasing standby time.

[0069] In one or more possible embodiments, after the uplink random access signal is sent again using the preset common channel uplink maximum transmit power, it also includes: confirming that the random access response sent by the satellite is received, using the common channel uplink maximum transmit power, and initially transmitting the data on the uplink dedicated channel; when the terminal uses the preset maximum transmit power to transmit the uplink random access signal again, it receives the random access response sent by the satellite within a preset time, and determines to use the above-mentioned preset maximum transmit power as the power for initial transmission of the data. For example, the terminal's uplink maximum transmit power PulMax is the maximum transmit power preset in this application. When the terminal sends the uplink random access signal for the second time and receives the random access response sent by the satellite, it directly determines PulMax as the power for initial transmission of the data on the uplink dedicated channel.

[0070] In one or more possible embodiments, after sending an uplink random access signal through a common channel according to the first initial power, Figure 3 As shown, it also includes:

[0071] Step 301, upon receiving a random access response sent by a satellite, determining a second initial power of an uplink dedicated channel according to dedicated channel power indication information in the random access response;

[0072] In one or more possible embodiments, the timing starts after the terminal sends an uplink random access signal through a common channel, and the second initial power of the uplink dedicated channel is determined according to the dedicated channel power indication information in the random access response until a random access response sent by the satellite is received within a preset time.

[0073] Step 302: Initially transmit data on an uplink dedicated channel using the second initial power.

[0074] In one or more possible embodiments, when it is determined that the terminal sends data to the satellite for the first time after establishing a connection with the satellite, the terminal uses the determined second initial power to send data to the satellite through an uplink dedicated channel.

[0075] In one or more possible embodiments, the first initial power for sending the uplink random access signal is determined according to the uplink common channel power indication information sent by the satellite, such as Figure 4 As shown, including:

[0076] Step 401, determining the path loss of a satellite sending a downlink broadcast message through a common channel;

[0077] In one or more possible embodiments, when a satellite sends a downlink broadcast message to a terminal through a public channel, there will inevitably be energy loss due to the distance between the satellite and the terminal; therefore, it is necessary to first determine the loss of the satellite sending the downlink broadcast message before finally determining the power of the terminal sending the random access signal; at the same time, there is no limitation on how to determine the path loss in this application, as long as the specific result of the path loss can be finally obtained, it will not be repeated here.

[0078] Step 402, determining a first expected power according to the uplink common channel power indication information sent by the satellite;

[0079] In one or more possible embodiments, the first expected power is the expected random access power value expectedRxPower-RACH set by the satellite; the downlink broadcast message sent by the satellite carries uplink common channel power indication information, and the power indication information of the uplink common channel may be a preset fixed value, a preset range, any one of the formulas for determining the power according to the distance between the satellite and the terminal, or other conditions that can determine the expected power of the satellite. As long as the first expected power can be finally determined, the specific use of other methods is not limited.

[0080] Step 403: Determine a first initial power for sending an uplink random access signal according to the first expected power and the path loss.

[0081] In one or more possible embodiments, based on the obtained first expected power, that is, the expected random access power value expectedRxPower-RACH set by the satellite and the result obtained according to the above path loss formula, the first initial power for the terminal to send an uplink random access signal through a common channel is finally obtained, and the uplink random access signal is sent to the satellite according to the above first initial power.

[0082] In one or more possible embodiments, the second initial power of the uplink dedicated channel is determined, such as Figure 5 As shown, including:

[0083] Step 501, determining a second expected power according to the dedicated channel power indication information;

[0084] Step 502, determining a path loss for the satellite to send the random access response;

[0085] Step 503: Determine a second initial power of the uplink dedicated channel according to the second expected power and the path loss.

[0086] In one or more possible embodiments, the method for determining the second expected power through the dedicated channel power indication information is the same as the method for determining the first expected power through the uplink common channel power indication information in the embodiment. The second expected power in the present application is the expected uplink dedicated channel power value expectedRxPower-DCH of the satellite; and the path loss for the satellite to send a random access response to the terminal is determined according to the above path loss formula; finally, the second initial power of the uplink dedicated channel is determined according to the satellite's expected uplink dedicated channel power value expectedRxPower-DCH and the path loss of the random access response. In the present application, the above second initial power is determined as the initial transmission power Pul0 of the uplink dedicated channel, which is used for the initial transmission of data by the terminal through the uplink dedicated channel.

[0087] The maximum uplink transmission power of the common channel is used to initially transmit data on the uplink dedicated channel, such as Figure 6 As shown, including:

[0088] Step 601, determining the third initial power of the uplink dedicated channel as the common channel uplink maximum transmit power;

[0089] Step 602: initially transmit data in an uplink dedicated channel using the maximum uplink transmission power of the common channel.

[0090] In one or more possible embodiments, the terminal sends the random access signal again using a preset maximum transmission power. When the terminal receives a random access response sent by the satellite within a preset time, the preset maximum transmission power is used as the third initial power for sending data through the terminal uplink dedicated channel. At this time, the third initial power does not need to be calculated, and the preset maximum power of the terminal is directly used to perform initial transmission of data through the uplink dedicated channel.

[0091] In one or more possible embodiments, the method further includes: adjusting the power of subsequent data transmission through the uplink dedicated channel according to the uplink closed-loop power control method; and transmitting data according to the adjusted power. The uplink closed-loop power control method refers to a technology that dynamically adjusts the power of the transmitting end according to the receiving effect of the receiving end, which can partially reduce the impact of fast channel fading. Its main advantage is high control accuracy, which is used for fine adjustment of the transmission power during communication.

[0092] The present application provides a communication system power control method, which is applied to a terminal, and specifically includes: receiving a downlink broadcast message sent by a satellite through a common channel, determining a first initial power for sending an uplink random access signal according to uplink common channel power indication information in the downlink broadcast message, and sending the uplink random access signal through the common channel according to the first initial power; when a random access response sent by the satellite is received, determining a second initial power of an uplink dedicated channel according to dedicated channel power indication information in the random access response; using the second initial power to initially transmit data on the uplink dedicated channel; when no random access response sent by the satellite is received, using a preset common channel uplink maximum transmission power to send an uplink random access signal; using the common channel uplink maximum transmission power to initially transmit data on the uplink dedicated channel; adjusting the power of subsequent data transmission through the uplink dedicated channel according to an uplink closed-loop power control method; and transmitting data according to the adjusted power.

[0093] According to a communication system power control method provided in the present application, the power of public channels and dedicated channels can be accurately controlled, the delay of the communication system can be reduced, and the system's transmission power can be reduced to the greatest extent while ensuring the communication quality, ultimately achieving the purpose of reducing power consumption, reducing delay, and increasing standby time.

[0094] Based on the same inventive concept, the present application provides a communication system power control method, which is applied to a satellite, such as Figure 7 As shown, including:

[0095] Step 701, sending a downlink broadcast message to a terminal using a fixed transmission power; the downlink broadcast message includes uplink common channel power indication information;

[0096] In one or more possible embodiments, the above-mentioned fixed transmission power is the fixed transmission power PdlFix of the satellite's downlink common channel. The downlink broadcast message sent by the satellite to the terminal using the fixed transmission power includes uplink common channel power indication information and basic information required for the terminal to access the satellite.

[0097] Step 702: upon receiving an uplink random access signal sent by a terminal, sending a random access response message to the terminal via a common channel; the random access response message includes dedicated channel power indication information;

[0098] Step 703: Initially transmit data using the preset initial transmission power of the downlink dedicated channel.

[0099] In one or more possible embodiments, the method further includes: adjusting the power of subsequent data transmission through the downlink dedicated channel according to the downlink closed-loop power control method; and transmitting data according to the adjusted power.

[0100] The following describes the specific process from the perspective of interaction between the satellite and the terminal.

[0101] In one or more possible embodiments, Figure 8 As shown, including:

[0102] Step 801, the communication system is initialized, the fixed transmission power PdlFix of the satellite's downlink common channel is configured, the initial transmission power Pdl0 of the satellite's downlink dedicated channel is configured, and the maximum uplink transmission power PulMax of the terminal is configured;

[0103] Step 802: The satellite uses the configured fixed transmission power PdlFix of the downlink common channel to send a downlink broadcast message to the terminal, and the message contains basic information required for the terminal to access the system;

[0104] Step 803: After receiving the downlink broadcast message, the terminal calculates the downlink path loss, and calculates the initial power Pra0 for uplink random access transmission according to the configured expected random access power value expectedRxPower-RACH, and then initiates the first random access using the initial power Pra0;

[0105] Step 804: whether a random access response sent by the satellite is received within a preset time, if yes, proceed to step 805, if no, proceed to step 806;

[0106] Step 805: Calculate the initial transmit power Pul0 of the uplink dedicated channel according to the downlink path loss calculated by the terminal and the configured expected uplink dedicated channel power value expectedRxPower-DCH, and initially send data through the uplink dedicated channel according to the initial transmit power Pul0, and execute step 807;

[0107] Step 806, using the maximum uplink transmission power PulMax to initiate random access again, and determine that the random access response sent by the satellite is received within the preset time. The terminal uses the maximum transmission power PulMax as the initial transmission power of the uplink dedicated channel and performs initial data transmission;

[0108] Step 807, the satellite uses the configured initial transmission power Pdl0 of the downlink dedicated channel as the initial transmission power and performs initial data transmission;

[0109] Step 808: After the uplink / downlink dedicated channel completes the initial transmission, in the subsequent data transmission, the uplink / downlink closed-loop power control method is used to adjust the data transmission power before sending.

[0110] Based on the same inventive concept, the present application also provides a communication system power control device, which is applied to a terminal, such as Fig. 9 As shown, the device comprises:

[0111] The signal sending module 901 is used to determine a first initial power for sending an uplink random access signal according to the uplink common channel power indication information sent by the satellite, and send the uplink random access signal through the common channel according to the first initial power;

[0112] The response determination module 902 is used to send an uplink random access signal again using a preset common channel uplink maximum transmission power when confirming that no random access response sent by the satellite has been received.

[0113] In one or more possible embodiments, after the uplink random access signal is sent again using the preset common channel uplink maximum transmission power, the response determination module 902 is also used to confirm the receipt of the random access response sent by the satellite, and use the common channel uplink maximum transmission power to perform initial transmission of data on the uplink dedicated channel.

[0114] In one or more possible embodiments, after sending an uplink random access signal through a common channel according to the first initial power, the response determination module 902 is further used to, when receiving a random access response sent by a satellite, determine a second initial power of an uplink dedicated channel according to dedicated channel power indication information in the random access response; and use the second initial power to initially transmit data on the uplink dedicated channel.

[0115] In one or more possible embodiments, the uplink common channel power indication information is determined according to a downlink broadcast message sent by the satellite through a common channel.

[0116] In one or more possible embodiments, the signal sending module 901 is specifically used to determine the path loss of the satellite sending the downlink broadcast message through the common channel;

[0117] Determining a first expected power according to uplink common channel power indication information sent by the satellite;

[0118] A first initial power for sending an uplink random access signal is determined according to the first expected power and the path loss.

[0119] In one or more possible embodiments, the response determination module 902 is specifically configured to determine the second expected power according to the dedicated channel power indication information;

[0120] determining a path loss for a satellite to send the random access response;

[0121] A second initial power of an uplink dedicated channel is determined according to the second expected power and the path loss.

[0122] In one or more possible embodiments, the response determination module 902 is specifically configured to determine that the third initial power of the uplink dedicated channel is the common channel uplink maximum transmit power;

[0123] The maximum uplink transmission power of the common channel is used to initially transmit data on the uplink dedicated channel.

[0124] In one or more possible embodiments, an uplink power adjustment module is further included, which is used to adjust the power of subsequent data transmission through the uplink dedicated channel according to the uplink closed-loop power control method; and perform data transmission according to the adjusted power.

[0125] Based on the same inventive concept, the present application also provides a communication system power control device, which is applied to a satellite, such as Fig.10 As shown, the device comprises:

[0126] The broadcast transmission module 1001 is used to send a downlink broadcast message to the terminal using a fixed transmission power; the downlink broadcast message includes uplink common channel power indication information;

[0127] A response message sending module 1002 is used to send a random access response message to the terminal through a common channel when receiving an uplink random access signal sent by the terminal; the random access response information includes dedicated channel power indication information;

[0128] The data transmission module 1003 is used to perform initial data transmission using the preset initial transmission power of the downlink dedicated channel.

[0129] In one or more possible embodiments, a downlink power adjustment module is further included, which is used to adjust the power of subsequent data transmission through the downlink dedicated channel according to the downlink closed-loop power control method; and perform data transmission according to the adjusted power.

[0130] Based on the same inventive concept, the present application also provides a communication system power control device, comprising at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned communication system power control method.

[0131] like Fig.11 As shown, the device includes a processor 1101, a memory 1102, a communication interface 1103 and a bus 1104. The processor 1101, the memory 1102 and the communication interface 1103 are connected to each other via the bus 1104.

[0132] The processor 1101 is used to read and execute instructions in the memory 1102, so that at least one processor can execute the communication system power control method provided in the above embodiment.

[0133] The memory 1102 is used to store various instructions and programs of the communication system power control method provided in the above embodiment.

[0134] The bus 1104 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.11 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0135] The processor 1101 may be a central processing unit (CPU), a network processor (NP), a graphic processing unit (GPU), or any combination of CPU, NP, and GPU. It may also be a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0136] In addition, the present application also provides a storage medium, such as Fig.12 As shown, the storage medium stores a computer program, and the computer program is used to enable a computer to execute any one of the methods in the above embodiments.

[0137] The memory may include a readable medium in the form of a volatile memory, such as a random access memory (RAM) 1221 and / or a cache memory 1222 , and may further include a read-only memory (ROM) 1223 .

[0138] The memory may also include a program / utility 1225 having a set (at least one) of program modules 1224, such program modules 1224 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0139] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0140] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0141] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0142] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0143] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A communication system power control method, applied to a terminal, characterized in that: include: Determine a first initial power for sending an uplink random access signal according to the uplink common channel power indication information sent by the satellite, and send the uplink random access signal through the common channel according to the first initial power; When it is confirmed that no random access response sent by the satellite is received, the uplink random access signal is sent again using the preset common channel uplink maximum transmission power.

2. The method according to claim 1, characterized in that After the uplink random access signal is sent again using the preset common channel uplink maximum transmit power, the method further includes: Confirm receipt of the random access response sent by the satellite, use the maximum uplink transmission power of the common channel, and perform initial data transmission on the uplink dedicated channel.

3. The method according to claim 1, characterized in that After sending an uplink random access signal through a common channel according to the first initial power, the method further includes: When receiving a random access response sent by the satellite, determining a second initial power of the uplink dedicated channel according to the dedicated channel power indication information in the random access response; The second initial power is used to initially transmit data on an uplink dedicated channel.

4. The method according to claim 1, characterized in that The uplink common channel power indication information is determined according to a downlink broadcast message sent by the satellite through a common channel.

5. The method according to claim 4, characterized in that Determining a first initial power for sending an uplink random access signal according to uplink common channel power indication information sent by a satellite includes: Determine the path loss of satellites sending downlink broadcast messages through common channels; Determining a first expected power according to uplink common channel power indication information sent by the satellite; A first initial power for sending an uplink random access signal is determined according to the first expected power and the path loss.

6. The method according to claim 3, characterized in that Determining a second initial power of an uplink dedicated channel includes: Determine a second expected power according to the dedicated channel power indication information; determining a path loss for a satellite to send the random access response; A second initial power of an uplink dedicated channel is determined according to the second expected power and the path loss.

7. The method according to claim 2, characterized in that The maximum uplink transmission power of the common channel is used to initially transmit data on the uplink dedicated channel, including: Determining the third initial power of the uplink dedicated channel as the common channel uplink maximum transmit power; The maximum uplink transmission power of the common channel is used to initially transmit data on the uplink dedicated channel.

8. The method according to claim 2 or 3, characterized in that: Also includes: adjusting the power of subsequent data transmission via the uplink dedicated channel according to an uplink closed-loop power control method; Data is transmitted according to the adjusted power.

9. A communication system power control method, applied to a satellite, characterized in that: include: Use fixed transmission power to send downlink broadcast messages to terminals; The downlink broadcast message includes uplink common channel power indication information; When receiving an uplink random access signal sent by a terminal, sending a random access response message to the terminal through a common channel; the random access response information includes dedicated channel power indication information; The data is initially transmitted using the preset initial transmission power of the downlink dedicated channel.

10. A communication system power control device, applied to a terminal, characterized in that: The device comprises: A signal sending module, used to determine a first initial power for sending an uplink random access signal according to the uplink common channel power indication information sent by the satellite, and send the uplink random access signal through the common channel according to the first initial power; The response determination module is used to send the uplink random access signal again using the preset common channel uplink maximum transmission power when confirming that the random access response sent by the satellite has not been received.

11. A communication system power control device, applied to a satellite, characterized in that: The device comprises: A broadcast transmission module, configured to transmit a downlink broadcast message to a terminal using a fixed transmission power; the downlink broadcast message includes uplink common channel power indication information; A response message sending module, configured to send a random access response message to the terminal via a common channel upon receiving an uplink random access signal sent by the terminal; the random access response message includes dedicated channel power indication information; The data transmission module is used to perform initial data transmission using the initial transmission power of the preset downlink dedicated channel.

12. A communication system power control device, characterized in that: The device comprises: At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor so that the at least one processor can execute the communication system power control method as described in any one of claims 1-8 or 9.

13. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to enable a computer to execute the method according to any one of claims 1 to 8 or 9.

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