Communication method, device and system, chip, storage medium and program product

Abstract

The invention discloses a communication method, device and system, a chip, a storage medium and a program product. In the embodiment of the invention, the network equipment indicates the power adjustment amount, so that the terminal equipment can obtain the new sending power according to the initial sending power and the power adjustment amount, and performs uplink communication with the new sending power, thereby flexibly adjusting the sending power of the terminal equipment.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method, apparatus, system, chip, storage medium, and program product. Background Art

[0002] When a terminal device communicates with a satellite, its transmission power is determined by the transmission power P of the terminal device. CMAX,c Its power back-off amount is determined by a parameter P-mac indicated by the network side through radio resource control (RRC) signaling. For a terminal device that does not support RRC reconfiguration, that is, after configuring RRC signaling once, it will not be updated again in the connected state. If it is in the connected state for a long time, the network side will configure a conservative P-mac, that is, the calculated power back-off amount will cause the terminal device to back off to 23 dBm, otherwise there is a risk of not meeting the radiation requirements, which greatly limits the flexibility of high-power terminal power adjustment. Summary of the Invention

[0003] This application provides a communication method, apparatus, system, chip, storage medium, and program product, so that the transmission power of the terminal device can be determined flexibly.

[0004] In a first aspect, a communication method is provided, which is implemented by a terminal device, or a chip or circuit for the terminal device.

[0005] Wherein, the method includes: obtaining a first transmission power; receiving first information, where the first information is used to indicate a first power adjustment amount; and performing uplink communication with a second transmission power, where the second transmission power is obtained according to the first transmission power and the first information.

[0006] In this aspect, by receiving the power adjustment amount indicated by the network device, the terminal device can obtain a new transmission power according to the initial transmission power and the power adjustment amount, and perform uplink communication with the new transmission power, so that the transmission power of the terminal device can be adjusted flexibly. This new transmission power can be higher than 23 dBm, so that the terminal device can transmit at a high power.

[0007] In a possible implementation, the first transmission power is based on the maximum transmission power configured by the network device.

[0008] In this implementation, the network device can configure the maximum transmission power according to the capabilities of the terminal device, and the terminal device determines the actual first transmission power according to the maximum transmission power.

[0009] In another possible implementation, the first transmission power is the maximum transmission power, the minimum transmission power, or the intermediate value of the transmission power of the terminal device, where the intermediate value of the transmission power refers to the intermediate value between the maximum transmission power and the minimum transmission power.

[0010] In this implementation, the network device may also not configure the maximum transmission power, or the terminal device does not adopt the maximum transmission power configured by the network device. The terminal device obtains its own maximum transmission power, minimum transmission power, or the intermediate value of the transmission power as the actual first transmission power.

[0011] In yet another possible implementation, the first information is further used to indicate the effective period of the first power adjustment amount.

[0012] Exemplarily, the effective period includes at least one of the following information: start effective time, effective duration, end effective time.

[0013] In this implementation, in order to meet the human radiation requirements, the network device may also indicate the effective period of the first power adjustment amount through the first information to prevent the terminal device from always transmitting at a high power.

[0014] In yet another possible implementation, the first information is further used to indicate the effective duration of the first power adjustment amount.

[0015] In yet another possible implementation, the first information includes the effective duration of the first power adjustment amount, or includes the offset of the effective duration of the first power adjustment amount.

[0016] In yet another possible implementation, the method further includes: receiving second information, where the second information is used to indicate the effective duration of the first power adjustment amount.

[0017] In yet another possible implementation, the second information includes the effective duration of the first power adjustment amount, or includes the basic amount of the effective duration of the first power adjustment amount.

[0018] In this implementation, the effective duration of the first power adjustment amount, or the basic amount of the effective duration of the first power adjustment amount, can be indicated through the second information. When the second information indicates the basic amount of the effective duration of the first power adjustment amount, the effective duration of the first power adjustment amount is equal to the sum of the basic amount and the offset of the effective duration indicated by the first information.

[0019] In another possible implementation, the first power adjustment amount takes effect after a first time upon receiving the first information; or the first power adjustment amount takes effect after a second time upon sending the third information; or the first power adjustment amount takes effect when sending the third information; or the first power adjustment amount takes effect when the first transmission power becomes invalid; wherein, the third information is used to indicate whether the first information is successfully received.

[0020] In this implementation, since the terminal device needs to parse the first information after receiving it, the starting effective time of the first power adjustment amount is specified to accurately perform power adjustment. If the above first transmission power is also determined based on the indication of the network device, the first power adjustment amount can take effect when the first transmission power becomes invalid.

[0021] In another possible implementation, the starting effective time of the first power adjustment amount is the starting moment of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after receiving the first information; or the first uplink subframe after the second time after sending the third information; or the first uplink subframe after sending the third information; or the first uplink subframe after the ending effective time of the first transmission power.

[0022] In this implementation, to accurately perform power adjustment, the starting effective time of the first power adjustment amount is specified as the starting moment of the first uplink subframe.

[0023] In another possible implementation, the method further includes: sending a fourth information, where the fourth information is used to indicate whether it supports sending in the first power mode.

[0024] In this implementation, after the terminal device is scheduled to perform high-power transmission for a period of time, the terminal device can itself count the duration of high-power transmission and send the fourth information to indicate whether it supports sending in the first power mode. This first power mode is the high-power transmission mode.

[0025] In another possible implementation, the fourth information is carried in at least one of the following information: buffer status report, hybrid automatic repeat request (HARQ) feedback information, or random access request.

[0026] In this implementation, it can be indicated whether it supports sending in the first power mode in an explicit or implicit manner through the above fourth information.

[0027] In another possible implementation, the buffer status report adopts a first scrambling method to indicate whether it supports sending in the first power mode.

[0028] In this implementation, an implicit manner is adopted to indicate whether transmission in the first power mode is supported, which can save indication overhead.

[0029] In another possible implementation, the hybrid automatic repeat request feedback information adopts a first scrambling method to indicate whether transmission in the first power mode is supported.

[0030] In this implementation, an implicit manner is adopted to indicate whether transmission in the first power mode is supported, which can save indication overhead.

[0031] In another possible implementation, the fourth information is a first random access preamble sequence to indicate whether transmission in the first power mode is supported.

[0032] In this implementation, an implicit manner is adopted to indicate whether transmission in the first power mode is supported, which can save indication overhead.

[0033] In another possible implementation, the first power adjustment amount is a positive value or a negative value.

[0034] In another possible implementation, the first information includes an index corresponding to the first power adjustment amount, or the first information includes a power level corresponding to the second transmission power.

[0035] In another possible implementation, the first information is any one of the following: a medium access control control element (MAC CE), or downlink control information (DCI).

[0036] In a second aspect, a communication method is provided, which is implemented by a network device, or a chip or circuit for a network device.

[0037] Wherein, the method includes: sending first information, the first information being used to indicate a first power adjustment amount; and receiving an uplink signal from a terminal device, the uplink signal being sent by the terminal device at a second transmission power, the second transmission power being obtained according to a first transmission power and the first information.

[0038] Exemplarily, the first transmission power is a transmission power determined by the terminal device before receiving the first information.

[0039] In this aspect, by indicating a power adjustment amount, the network device enables the terminal device to obtain a new transmission power based on the initial transmission power and the power adjustment amount, and perform uplink communication with the new transmission power, thereby enabling flexible adjustment of the transmission power of the terminal device. The new transmission power can be higher than 23 dBm, so that the terminal device can transmit at a high power.

[0040] In a possible implementation, the first transmission power is based on the maximum transmission power configured by the network device.

[0041] In this implementation, the network device can configure the maximum transmission power according to the capabilities of the terminal device, and the terminal device determines the actual first transmission power based on the maximum transmission power.

[0042] In another possible implementation, the first transmission power is the maximum transmission power, the minimum transmission power, or the intermediate value of the transmission power of the terminal device, where the intermediate value of the transmission power refers to the intermediate value between the maximum transmission power and the minimum transmission power.

[0043] In this implementation, the network device may not configure the maximum transmission power, or the terminal device does not adopt the maximum transmission power configured by the network device. The terminal device obtains its own maximum transmission power, minimum transmission power, or the intermediate value of the transmission power as the actual first transmission power.

[0044] In yet another possible implementation, the first information is further used to indicate the effective period of the first power adjustment amount.

[0045] Exemplarily, the effective period includes at least one of the following information: start effective time, effective duration, end effective time.

[0046] In this implementation, to meet the human radiation requirements, the network device can also indicate the effective period of the first power adjustment amount through the first information to prevent the terminal device from transmitting at a high power all the time.

[0047] In yet another possible implementation, the first information is further used to indicate the effective duration of the first power adjustment amount.

[0048] In yet another possible implementation, the first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

[0049] In yet another possible implementation, the method further includes: sending second information, where the second information is used to indicate the effective duration of the first power adjustment amount.

[0050] In another possible implementation, the second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

[0051] In this implementation, the effective duration of the first power adjustment amount, or the basic amount of the effective duration of the first power adjustment amount, can be indicated by the second information. When the second information indicates the basic amount of the effective duration of the first power adjustment amount, the effective duration of the first power adjustment amount is equal to the sum of the offset amount of the basic amount and the effective duration indicated by the first information.

[0052] In another possible implementation, the first power adjustment amount takes effect after a first time since the terminal device receives the first information; or the first power adjustment amount takes effect after a second time since the terminal device sends the third information; or the first power adjustment amount takes effect when the terminal device sends the third information; or the first power adjustment amount takes effect when the first transmission power is invalid; where the third information is used to indicate whether the first information is successfully received.

[0053] In this implementation, since the terminal device needs to parse the first information after receiving it, the starting effective time of the first power adjustment amount is specified to accurately perform power adjustment. If the above first transmission power is also determined based on the indication of the network device, the first power adjustment amount can take effect when the first transmission power is invalid.

[0054] In another possible implementation, the starting effective time of the first power adjustment amount is the starting moment of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time since the terminal device receives the first information; or the first uplink subframe after the second time since the terminal device sends the third information; or the first uplink subframe after the terminal device sends the third information; or the first uplink subframe after the ending effective time of the first transmission power.

[0055] In this implementation, to accurately perform power adjustment, the starting effective time of the first power adjustment amount is specified as the starting moment of the first uplink subframe.

[0056] In another possible implementation, the method further includes: receiving a fourth information, where the fourth information is used to indicate whether it supports sending in the first power mode.

[0057] In this implementation, after the terminal device is scheduled to perform high-power transmission for a period of time, the terminal device can itself count the duration of performing high-power transmission and send the fourth information to indicate whether it supports sending in the first power mode. The first power mode is the high-power transmission mode.

[0058] In yet another possible implementation, the fourth piece of information is carried in at least one of the following: a cache status report, hybrid automatic repeat request feedback information, or a random access request.

[0059] In this implementation, it can be indicated whether the first power mode is supported in an explicit or implicit manner through the above-mentioned fourth piece of information.

[0060] In yet another possible implementation, the cache status report adopts a first scrambling method to indicate whether the first power mode is supported.

[0061] In this implementation, indicating whether the first power mode is supported in an implicit manner can save indication overhead.

[0062] In yet another possible implementation, the hybrid automatic repeat request feedback information adopts a first scrambling method to indicate whether the first power mode is supported.

[0063] In this implementation, indicating whether the first power mode is supported in an implicit manner can save indication overhead.

[0064] In yet another possible implementation, the fourth piece of information is a first random access preamble sequence to indicate whether the first power mode is supported.

[0065] In this implementation, indicating whether the first power mode is supported in an implicit manner can save indication overhead.

[0066] In yet another possible implementation, the first power adjustment amount is a positive value or a negative value.

[0067] In yet another possible implementation, the first piece of information includes an index corresponding to the first power adjustment amount, or the first piece of information includes a power level corresponding to the second transmission power.

[0068] In yet another possible implementation, the first piece of information is any one of the following: a MAC CE, or a DCI.

[0069] In a third aspect, a communication device is provided for implementing the communication method in the first aspect or any implementation of the first aspect. This device can be a terminal device, or a module applied to a terminal device (such as a processor, a chip, or a chip system, etc.), or a logical node, a logical module, or software that can implement all or part of the terminal device. In one implementation, this communication device can include a sending unit, a receiving unit, and can also include a processing unit. The sending unit and the receiving unit can be independent or combined together (which can be referred to as a "transceiving unit").

[0070] Fourthly, a communication device is provided for implementing the communication method in the second aspect or any implementation of the second aspect. The device may be a network device, or a module applied to a network device (such as a processor, a chip, or a chip system, etc.), or a logical node, a logical module, or software that can implement all or part of the functions of a network device. In one implementation, the communication device may include a sending unit, a receiving unit, and may further include a processing unit. The sending unit and the receiving unit may be independent or combined together (which may be referred to as a "transceiving unit").

[0071] In a possible implementation manner, the communication devices in the third aspect to the fourth aspect include modules for respectively executing the methods in any aspect or any implementation of the first aspect and the second aspect.

[0072] Wherein, when the communication device is used to implement the method in the first aspect or any implementation of the first aspect, the processing unit is used to obtain a first transmission power; the transceiving unit is used to receive a first piece of information, and the first piece of information is used to indicate a first power adjustment amount; and the transceiving unit is further used to perform uplink communication with a second transmission power, and the second transmission power is obtained according to the first transmission power and the first piece of information.

[0073] Optionally, the first transmission power is based on the maximum transmission power configured by the network device.

[0074] Optionally, the first transmission power is the maximum transmission power, the minimum transmission power, or the intermediate value of the transmission power of the terminal device, where the intermediate value of the transmission power refers to the intermediate value between the maximum transmission power and the minimum transmission power.

[0075] Optionally, the first piece of information is further used to indicate the effective period of the first power adjustment amount.

[0076] Exemplarily, the effective period includes at least one of the following pieces of information: start effective time, effective duration, end effective time.

[0077] Optionally, the first piece of information is further used to indicate the effective duration of the first power adjustment amount.

[0078] Optionally, the first piece of information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

[0079] Optionally, the transceiving unit is further used to receive a second piece of information, and the second piece of information is used to indicate the effective duration of the first power adjustment amount.

[0080] Optionally, the second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

[0081] Optionally, the first power adjustment amount becomes effective after a first time upon receiving the first information; or the first power adjustment amount becomes effective after a second time upon sending the third information; or the first power adjustment amount becomes effective when sending the third information; or the first power adjustment amount becomes effective when the first transmission power is invalid; wherein, the third information is used to indicate whether the first information is successfully received.

[0082] Optionally, the starting effective time of the first power adjustment amount is the starting moment of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after receiving the first information; or the first uplink subframe after the second time after sending the third information; or the first uplink subframe after sending the third information; or the first uplink subframe after the end effective time of the first transmission power.

[0083] Optionally, the transceiver unit is further configured to send a fourth information, where the fourth information is used to indicate whether it supports sending in the first power mode.

[0084] Optionally, the fourth information is carried in at least one of the following information: buffer status report, HARQ feedback information, or random access request.

[0085] Wherein, when the communication device is used to implement the method described in the second aspect or any implementation manner of the second aspect, the transceiver unit is configured to send a first information, where the first information is used to indicate a first power adjustment amount; and receive an uplink signal from a terminal device, where the uplink signal is sent by the terminal device at a second transmission power, and the second transmission power is obtained according to the first transmission power and the first information.

[0086] Exemplarily, the first transmission power is the transmission power determined by the terminal device before receiving the first information.

[0087] Optionally, the first transmission power is based on the maximum transmission power configured by the network device.

[0088] Optionally, the first transmission power is the maximum transmission power, minimum transmission power, or intermediate value of the transmission power of the terminal device, where the intermediate value of the transmission power refers to the intermediate value between the maximum transmission power and the minimum transmission power.

[0089] Optionally, the first information is further used to indicate the effective period of the first power adjustment amount.

[0090] Exemplarily, the effective period includes at least one of the following information: start effective time, effective duration, end effective time.

[0091] Optionally, the first information is further used to indicate the effective duration of the first power adjustment amount.

[0092] Optionally, the first information includes the effective duration of the first power adjustment amount, or includes an offset of the effective duration of the first power adjustment amount.

[0093] Optionally, the transceiver unit is further configured to send second information, where the second information is used to indicate the effective duration of the first power adjustment amount.

[0094] Optionally, the second information includes the effective duration of the first power adjustment amount, or includes a basic amount of the effective duration of the first power adjustment amount.

[0095] Optionally, the first power adjustment amount starts to take effect after a first time after receiving the first information; or the first power adjustment amount starts to take effect after a second time after sending the third information; or the first power adjustment amount takes effect when sending the third information; or the first power adjustment amount takes effect when the first transmission power is invalid; where the third information is used to indicate whether the first information is successfully received.

[0096] Optionally, the start effective time of the first power adjustment amount is the start moment of the first uplink subframe, and the first uplink subframe is any one of the following: the first uplink subframe after the first time after receiving the first information; or the first uplink subframe after the second time after sending the third information; or the first uplink subframe after sending the third information; or the first uplink subframe after the end effective time of the first transmission power.

[0097] Optionally, the transceiver unit is further configured to receive fourth information, where the fourth information is used to indicate whether it supports sending in the first power mode.

[0098] Optionally, the fourth information is carried in at least one of the following information: buffer status report, HARQ feedback information, or random access request.

[0099] Where, when the communication device is used to implement the method described in the second aspect or any implementation manner of the second aspect,

[0100] In another possible implementation, the communication device in the above third aspect to fourth aspect includes a processor coupled to a memory; the processor is configured to implement the corresponding functions of the device in the above communication method. The memory is used to be coupled to the processor and stores the necessary programs (instructions) and / or data of the device. Optionally, the communication device may further include a communication interface for implementing communication between the device and other network elements. Optionally, the memory may be located inside the communication device or outside the communication device.

[0101] In yet another possible implementation, the communication device in the above third aspect to fourth aspect includes a processor and a transceiver device, the processor is coupled to the transceiver device, and the processor is used to execute a computer program or instruction to control the transceiver device to receive and send information; when the processor executes the computer program or instruction, the processor is further used to implement the above method through a logic circuit or execute code instructions. Wherein, the transceiver device may be a transceiver, a transceiver circuit or an input / output interface, and is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device. When the communication device is a chip, the transceiver device is a transceiver circuit or an input / output interface.

[0102] When the communication device in the above third aspect to fourth aspect is a chip, the sending unit may be an output unit, such as an output circuit or a communication interface; the receiving unit may be an input unit, such as an input circuit or a communication interface. When the communication device is a terminal, the sending unit may be a transmitter or a transmitter; the receiving unit may be a receiver or a receiver.

[0103] In a fifth aspect, a computer-readable storage medium is provided, in which a computer program or instruction is stored, and when the computer program or instruction is executed, the methods described in the above aspects are implemented.

[0104] In a sixth aspect, a computer program product containing instructions is provided, and when the instructions run on a communication device, the communication device is caused to execute the methods described in the above aspects.

[0105] In a seventh aspect, a communication system is provided, and the communication system includes the communication device described in the third aspect and the communication device described in the fourth aspect. Description of the Drawings

[0106] Figure 1 It is a simplified schematic diagram of a wireless communication system provided by an embodiment of the present application;

[0107] Figures 2a - 2c It is a schematic diagram of an application scenario of a space-ground integrated network;

[0108] Figure 3 It is a schematic flowchart of a communication method provided by an embodiment of the present application;

[0109] Figure 4 It is a schematic flowchart of another communication method provided by an embodiment of the present application;

[0110] Figure 5 It is a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0111] Figure 6 It is a schematic structural diagram of another communication device provided by an embodiment of the present application. Detailed implementation manners

[0112] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0113] The technology provided by the present application can be applied to various communication systems. For example, the communication system can be a fourth-generation (4 th generation, 4G) communication system (such as a long term evolution (LTE) system), a fifth-generation (5 th generation, 5G) communication system, worldwide interoperability for microwave access (WiMAX), a wireless local area network (WLAN) system, a fusion system of multiple systems, or a future communication system, such as a sixth-generation (6 th generation, 6G) communication system, etc. Among them, the 5G communication system can also be referred to as a new radio (NR) system.

[0114] A network element in a communication system can send a signal to another network element or receive a signal from another network element. The signal can include information, signaling, data, etc. Among them, the network element can also be replaced by an entity, a network entity, a device, a terminal device, a communication module, a node, a communication node, etc. In the present application, the network element is taken as an example for description. For example, a communication system can include at least one terminal device and at least one access network device. The access network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the access network device. In addition, it can be understood that if there are multiple terminal devices in the communication system, signals can also be sent between the multiple terminal devices, that is, both the signal sending network element and the signal receiving network element can be terminal devices.

[0115] The communication method provided by the embodiments of this application can be applied to wireless communication systems such as 5G, 6G, and satellite communication. Refer to Figure 1 , Figure 1 , which is a simplified schematic diagram of the wireless communication system provided by the embodiments of this application. As Figure 1 shown, the wireless communication system includes a radio access network (RAN) 100. The radio access network 100 can be a next-generation (such as 6G or higher) wireless access network or a traditional (such as 5G, 4G) wireless access network. One or more terminal devices (120a - 120g, collectively referred to as 120) can be connected to each other or to one or more network devices (110a - 110c, collectively referred to as 110) in the radio access network 100, and the connection method can be wired or wireless. Optionally, Figure 1 since it is only a schematic diagram, the wireless communication system may also include other devices, such as core network devices, wireless relay devices, and / or wireless backhaul devices, etc., which are not drawn in Figure 1 .

[0116] Optionally, in practical applications, the wireless communication system can include multiple network devices (also referred to as access network devices) at the same time, or can also include multiple terminal devices at the same time. One network device can serve one or more terminal devices at the same time. One terminal device can also access one or more network devices at the same time. The embodiments of this application do not limit the number of terminal devices and network devices included in the wireless communication system.

[0117] Among them, the network device can be an entity on the network side for transmitting or receiving signals. The network device can be an access device for the terminal device to access the wireless communication system wirelessly. For example, the network device can be a base station. The base station can generally cover various names in the following, or be replaced with the following names. For example: RAN node, Node B, evolved Node B (eNB), next generation Node B (gNB), satellite base station, access network device in open radio access network (O-RAN), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master eNB (MeNB), secondary eNB (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, building baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), centralized unit (CU), distributed unit (DU), radio unit (RU), centralized unit control plane (CU-CP) node, centralized unit user plane (CU-UP) node, positioning node, etc. The base station can be a macro base station, micro base station, relay node, donor node or the like, or a combination thereof. The network device can also refer to a communication module, a modem or a chip disposed in the foregoing device or apparatus. The network device can also be a mobile switching center and a device that undertakes the function of a base station in device-to-device (D2D), vehicle-to-everything (V2X), machine-to-machine (M2M) communication, a network-side device in a 6G network, a device that undertakes the function of a base station in a future communication system, etc. The network device can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device.

[0118] The network device can be fixed or mobile. For example, base stations 110b and 110c are stationary and are responsible for wireless transmission and reception in one or more cells from the terminal device 120. Figure 1 The helicopter or drone 120c shown in Figure 1 can be configured to act as a mobile base station, and one or more cells can move according to the position of the mobile base station 120c. In other examples, the helicopter or drone (120c) can be configured to be used as a terminal device communicating with the satellite base station 110a.

[0119] In this application, the communication device for implementing the above access network function can be an access network device, a network device with partial functions of the access network, or a device capable of supporting the implementation of the access network function, such as a chip system, a hardware circuit, a software module, or a combination of a hardware circuit and a software module. This device can be installed in the access network device or used in matching with the access network device. In the method of this application, the communication device for implementing the function of the access network device is taken as an example of the access network device for description.

[0120] A terminal device can be an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device can be used to connect people, things, and machines. The terminal device can communicate with one or more core networks through network devices. The terminal device includes a handheld device with wireless connection capabilities, other processing devices connected to a wireless modem, or in-vehicle devices, etc. The terminal device can be a portable, pocket-sized, handheld, computer-integrated, or in-vehicle mobile device. The terminal device 120 can be widely applied in various scenarios, such as cellular communication, D2D, V2X, end-to-end (point-to-point, P2P), machine-to-machine (M2M), machine type communication (MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery and mobility, etc.Some examples of the terminal device 120 are: user equipment (UE) compliant with the 3GPP standard, fixed devices, mobile devices, handheld devices, wearable devices, cellular phones, smartphones, session initiated protocol (SIP) phones, laptop computers, personal computers, smart books, vehicles, satellites, global positioning system (GPS) devices, target tracking devices, drones, helicopters, aircraft, vessels, remote control devices, smart home devices, industrial devices, personal communication service (PCS) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), wireless network cameras, tablet computers, palmtop computers, mobile internet devices (MIDs), wearable devices such as smart watches, VR devices, AR devices, wireless terminals in industrial control, terminals in vehicle-to-everything (V2X) systems, wireless terminals in self-driving, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities such as smart fuel dispensers, terminal devices on high-speed trains, and wireless terminals in smart homes such as smart speakers, smart coffee machines, smart printers, etc. The terminal device 120 may be a wireless device in the above various scenarios or a device used to be disposed in a wireless device. For example, communication modules, modems, or chips in the above devices, etc. The terminal device may also be referred to as a terminal, terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device may also be a terminal device in a future wireless communication system. The terminal device may be used in a dedicated network device or a general device. Embodiments of the present application do not limit the specific technologies and specific device forms adopted by the terminal device.

[0121] Optionally, the terminal device may be used to act as a base station. For example, a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X, D2D, or P2P, etc. As Figure 1As shown, the cellular phone 120a and the vehicle 120b communicate with each other using sidelink signals. Communication occurs between the cellular phone 120a and the smart home device 120e without relaying the communication signals through the base station 110b.

[0122] In this application, the communication device for implementing the functions of the terminal device may be the terminal device itself, or a terminal device with some of the functions of the above terminal device, or a device capable of supporting the implementation of the functions of the above terminal device, such as a chip system, which may be installed in the terminal device or used in conjunction with the terminal device. In this application, the chip system may be composed of chips or may include chips and other discrete devices. In the technical solution provided in this application, the communication device is described by taking the terminal device or UE as an example.

[0123] Optionally, a wireless communication system usually consists of cells, and the base station provides the management of the cells. The base station provides communication services to multiple mobile stations (MS) in the cell. The base station includes a baseband unit (BBU) and a remote radio unit (RRU). The BBU and the RRU can be placed in different locations. For example, the RRU is remotely located in a high-traffic area, and the BBU is placed in the central computer room. The BBU and the RRU can also be placed in the same computer room. The BBU and the RRU can also be different components under the same rack. Optionally, a cell can correspond to one carrier or a member carrier.

[0124] In some deployments, the network device mentioned in the embodiments of this application may be a device including a CU, or a DU, or a device including a CU and a DU, or a device including a CU-CP, a CU-UP, and a DU node. For example, the network device may include a gNB-CU-CP, a gNB-CU-UP, and a gNB-DU.

[0125] In some deployments, multiple RAN nodes cooperate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement some functions of the base station. For example, the RAN node may be a CU, a DU, a CU-CP, a CU-UP, or an RU, etc. The CU and the DU can be set separately or may also be included in the same network element, such as in the BBU. The RU may be included in the radio device or radio unit, such as included in the RRU, AAU, or RRH.

[0126] The RAN node can support one or more types of fronthaul interfaces. Different fronthaul interfaces respectively correspond to DUs and RUs with different functions. If the fronthaul interface between the DU and the RU is the Common Public Radio Interface (CPRI), the DU is configured to implement one or more of the baseband functions, and the RU is configured to implement one or more of the radio frequency functions. If the fronthaul interface between the DU and the RU is another interface, compared with the CPRI, some of the downlink and / or uplink baseband functions, for example, for the downlink, one or more of precoding, digital beamforming (BF), or inverse fast Fourier transform (IFFT) / cyclic prefix (CP) addition, are moved from the DU to the RU for implementation. For the uplink, one or more of digital beamforming (BF), or fast Fourier transform (FFT) / CP removal, are moved from the DU to the RU for implementation. In a possible implementation, this interface can be the Enhanced Common Public Radio Interface (eCPRI). Under the eCPRI architecture, different splitting methods between the DU and the RU correspond to different categories (Cat) of eCPRI, such as eCPRI Cat A, B, C, D, E, F.

[0127] Taking eCPRI Cat A as an example, for downlink transmission, with layer mapping as the segmentation, the DU is configured to implement one or more functions before layer mapping (i.e., one or more of encoding, rate matching, scrambling, modulation, and layer mapping), while other functions after layer mapping (e.g., one or more of RE mapping, digital beamforming (BF), or inverse fast Fourier transform (IFFT) / adding cyclic prefix (CP)) are moved to the RU for implementation. For uplink transmission, with de-RE mapping as the segmentation, the DU is configured to implement one or more functions before de-mapping (i.e., one or more of decoding, de-rate matching, descrambling, demodulation, inverse discrete Fourier transform (IDFT), channel equalization, and de-RE mapping), while other functions after de-mapping (e.g., one or more of digital BF or FFT / removing CP) are moved to the RU for implementation. It can be understood that for the function descriptions of the DU and RU corresponding to various types of eCPRI, reference can be made to the eCPRI protocol, which will not be elaborated here.

[0128] In a possible design, the processing unit used to implement baseband functions in the BBU is called the baseband high (BBH) unit, and the processing unit used to implement baseband functions in the RRU / AAU / RRH is called the baseband low (BBL) unit.

[0129] In different systems, the CU (or CU-CP and CU-UP), DU, or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, the CU can also be called O-CU (open CU), the DU can also be called O-DU, the CU-CP can also be called O-CU-CP, the CU-UP can also be called O-CU-UP, and the RU can also be called O-RU. Any unit among the CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0130] In the embodiments of this application, the device used to implement the functions of the network device can be the network device; it can also be a device capable of supporting the network device to implement such functions, such as a chip system, a hardware circuit, a software module, or a combination of a hardware circuit and a software module. This device can be installed in the network device or used in combination with the network device. In the embodiments of this application, only the case where the device used to implement the functions of the network device is the network device is taken as an example for illustration, which does not limit the solutions of the embodiments of this application.

[0131] It can be understood that this application can be applied between a network device and a terminal device.

[0132] The communication between the network device and the terminal device follows a certain protocol layer structure. This protocol layer structure can include a control plane protocol layer structure and a user plane protocol layer structure. For example, the control plane protocol layer structure can include functions of protocol layers such as the radio resource control (RRC) layer, the packet data convergence protocol (PDCP) layer, the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical layer. For example, the user plane protocol layer structure can include functions of protocol layers such as the PDCP layer, the RLC layer, the MAC layer, and the physical layer. In a possible implementation, a service data adaptation protocol (SDAP) layer can also be included above the PDCP layer.

[0133] Optionally, the protocol layer structure between the network device and the terminal device can also include an artificial intelligence (AI) layer for transmitting data related to AI functions.

[0134] Taking the data transmission between the network device and the terminal device as an example, the data transmission needs to pass through the user plane protocol layer, such as through the SDAP layer, the PDCP layer, the RLC layer, the MAC layer, and the physical layer. Among them, the SDAP layer, the PDCP layer, the RLC layer, the MAC layer, and the physical layer can also be collectively referred to as the access layer. According to the transmission direction of the data, it is divided into sending or receiving, and each of the above layers is further divided into a sending part and a receiving part. Taking the downlink data transmission as an example, after the PDCP layer obtains the data from the upper layer, it transmits the data to the RLC layer and the MAC layer, and then the MAC layer generates a transport block, and then performs wireless transmission through the physical layer. The data is encapsulated correspondingly in each layer. For example, the data received by a certain layer from the upper layer of this layer is regarded as the service data unit (SDU) of this layer, and after being encapsulated by this layer, it becomes the protocol data unit (PDU), and then is passed to the next layer.

[0135] Exemplarily, the terminal device may also have an application layer and a non-access stratum. Among them, the application layer may be used to provide services to the applications installed in the terminal device. For example, the downlink data received by the terminal device may be sequentially transmitted from the physical layer to the application layer and then provided to the application by the application layer. For another example, the application layer may obtain the data generated by the application and sequentially transmit the data to the physical layer for sending to other communication devices. The non-access stratum may be used to forward user data. For example, the uplink data received from the application layer may be forwarded to the SDAP layer, or the downlink data received from the SDAP layer may be forwarded to the application layer.

[0136] It should be understood that Figure 1 The number and type of each device in the shown communication system are only for illustration, and this application is not limited thereto. In actual applications, the communication system may further include more terminal devices, more access network devices, and may also include other network elements, such as core network devices and / or network elements for implementing artificial intelligence functions.

[0137] It can be understood that all or part of the functions implemented by one or more of the terminal device, the access network device, the core network device, or the network element for implementing artificial intelligence functions can be virtualized, that is, implemented by one or more of a dedicated processor or a general-purpose processor and corresponding software modules. Among them, since the terminal device and the access network device involve the interface for air interface transmission, the transceiver function of this interface can be implemented by hardware. Core network devices, such as operation administration and maintenance (OAM) network elements, can all be virtualized. Optionally, one or more functions of the virtualized terminal device, access network device, core network device, or network element for implementing artificial intelligence functions can be implemented by a cloud device, such as a cloud device in an over the top (OTT) system.

[0138] Satellite communication has been introduced as a communication scenario for 5G communication, known as non-terrestrial network (NTN). It can not only support various types of 5G terminal devices but also IoT-type terminal devices. Satellite communication has its unique advantages compared to terrestrial communication. For example, it can provide a wider coverage area, and satellite base stations are not easily damaged by natural disasters or external forces. If satellite communication is introduced in future 5G communication, it can provide communication services for areas that cannot be covered by terrestrial communication networks such as the ocean and forests; enhance the reliability of 5G communication, such as providing better communication services for users on vehicles like airplanes and trains; provide more resources for data transmission in 5G communication and improve the network rate. Therefore, supporting communication with both terrestrial and satellite is an inevitable trend for future 5G communication, which has great benefits in terms of wide coverage, reliability, multi-connection, high throughput, etc.

[0139] As Figures 2a - 2c shown, it is a schematic diagram of the application scenario of the satellite-terrestrial integrated network. Terrestrial terminal devices can access the network through the air interface (this air interface can be various types of air interfaces, such as the 5G air interface). In Figure 2a , the base station can be deployed on the ground and connected to the ground station that communicates with the satellite; in Figure 2b , the base station can be deployed on the satellite. The satellite is connected to the ground station through a wireless link. The ground station and the terrestrial base station are connected to the core network through wired or wireless means. There can be a wireless link between satellites. If the satellite only has the function of transparent forwarding (that is, the corresponding base station is deployed on the ground), then only transparent forwarding is achieved between satellites; if the base station or part of the base station functions are deployed on the satellite, then signaling interaction and user data transmission between base stations can be completed as Figure 2c shown.

[0140] The communication of terminal devices needs to meet the requirements of the specific absorption rate (SAR), that is, the requirements for radiation to the human body. Currently, a relatively strict process has been specified to ensure that the high-power uplink transmission of terminal devices does not exceed a certain proportion. The default power for terminal devices to send uplink signals is 23 dBm. If the power sent by the terminal device exceeds 23 dBm, power back-off needs to be carried out through protocol agreement or network-side indication. Because if the cumulative duration of sending high power within a certain period is too long, it will not meet the requirements for radiation of communication signals to the human body.

[0141] In the NTN scenario, due to the relatively poor link budget of satellite communication, for IoT terminal devices, the number of repetitions of uplink data is generally greater than 2, and the transmission power of the terminal device is P CMAX,c . Among them, P CMAX,cThere are corresponding upper and lower limits, which can meet the requirements of human body radiation (P CMAX,c The calculation formula of includes multiple parameters such as power back-off to limit its upper limit), as well as various other radio frequency indicators (such as interference, etc.).

[0142] The power back-off of the transmission power of the terminal device is determined by a parameter P-mac indicated by the network side through RRC signaling. For terminal devices that do not support RRC reconfiguration, that is, after configuring RRC signaling once, they will not be updated again in the connected state. If in the connected state for a long time, the network side will configure a conservative P-mac, that is, the calculated power back-off will make the terminal device back off to 23 dBm, otherwise there is a risk of not meeting the radiation requirements, greatly limiting the flexibility of high-power terminal power adjustment.

[0143] This application provides a power adjustment scheme. The network device indicates the power adjustment amount, so that the terminal device can obtain a new transmission power according to the initial transmission power and the power adjustment amount, and perform uplink communication with the new transmission power, thereby flexibly adjusting the transmission power of the terminal device.

[0144] As Figure 3 shown, it is a schematic flow chart of a communication method provided by an embodiment of this application. Exemplarily, the method may include the following steps:

[0145] S301. The terminal device obtains the first transmission power.

[0146] Exemplarily, the terminal device can obtain the first transmission power during actual uplink communication through the following several implementations:

[0147] One implementation is that the first transmission power is based on the maximum transmission power P EMAX,c configured by the network device. Specifically, the network device can configure the maximum transmission power P EMAX,c according to the capabilities of the terminal device, and the terminal device can determine the actual first transmission power according to the maximum transmission power.

[0148] Exemplarily, for terminal devices with a repetition transmission number greater than 2, the first transmission power is equal to P CMAX,c , and this P CMAX,c has upper and lower limits, and both its upper and lower limits are related to the maximum transmission power P EMAX,c .

[0149] Another implementation is that the first transmission power is the maximum transmission power of the terminal device. The network device may also not configure the maximum transmission power, or the terminal device does not adopt the maximum transmission power configured by the network device. The terminal device obtains the maximum transmission power determined based on its own capabilities and historical information of the transmission power as the actual first transmission power.

[0150] Another implementation is that the first transmission power is the minimum transmission power of the terminal device. The network device may also not configure the maximum transmission power, or the terminal device does not adopt the maximum transmission power configured by the network device. The terminal device obtains the minimum transmission power determined based on its own capabilities and historical information of the transmission power as the actual first transmission power to meet the human radiation requirements.

[0151] Another implementation is that the first transmission power is the median value of the transmission power of the terminal device. Here, the median value of the transmission power refers to the median value between the above-mentioned maximum transmission power and minimum transmission power. The network device may also not configure the maximum transmission power, or the terminal device does not adopt the maximum transmission power configured by the network device. The terminal device obtains the median value of the transmission power determined based on its own capabilities and historical information of the transmission power as the actual first transmission power to meet the human radiation requirements.

[0152] It can be understood that, relative to the subsequent dynamic adjustment of the transmission power, this first transmission power can be the initial transmission power or the static transmission power.

[0153] S302. The network device sends the first information to the terminal device. Correspondingly, the terminal device receives this first information.

[0154] The network device can send the first information to the terminal device according to scheduling requirements, channel status, etc., to instruct the terminal device to adjust the transmission power.

[0155] In one implementation, this first information is used to indicate the first power adjustment amount.

[0156] This first power adjustment amount can be a positive value or a negative value, that is, it can increase the transmission power of the terminal device or reduce the transmission power of the terminal device.

[0157] Exemplarily, for the above-mentioned case where the first transmission power is based on the maximum transmission power P EMAX,c configured by the network device, this first power adjustment amount can be a positive value (increase amount) or a negative value (reduction amount).

[0158] For the above-mentioned case where the first transmission power is the maximum transmission power of the terminal device, this first power adjustment amount is a negative value.

[0159] For the above-mentioned case where the first transmission power is the minimum transmission power of the terminal device, this first power adjustment amount is a positive value.

[0160] For the above-mentioned case where the first transmission power is the median value of the transmission power of the terminal device, this first power adjustment amount can be a positive value or a negative value.

[0161] The first information is used to indicate a first power adjustment amount. Optionally, a correspondence between one or more indexes and one or more power adjustment amounts can be pre-stored or pre-configured in the terminal device in advance. The first information includes an index corresponding to the first power adjustment amount, which can save signaling overhead. The terminal device can determine the first power adjustment amount corresponding to the index according to the index included in the first information.

[0162] In another implementation, a correspondence between one or more power levels and one or more transmission powers can be pre-stored or pre-configured in the terminal device in advance. The first information includes a power level corresponding to a second transmission power. After receiving the first information, the terminal device can determine the second transmission power according to the power level indicated by the first information.

[0163] Exemplarily, the first information can be carried in a MAC CE or DCI.

[0164] Optionally, the terminal device can also report to the network device its own ability to perform high-power transmission, including different high-power levels it supports. For example, the first high-power level is 26 dBm, the second high-power level is 29 dBm, and the third high-power level is 32 dBm. The network device can determine whether to instruct the terminal device to adjust the transmission power according to the ability of the terminal device.

[0165] S303. The terminal device performs uplink communication with the second transmission power. Correspondingly, the network device receives an uplink signal from the terminal device.

[0166] Wherein, the second transmission power is obtained according to the first transmission power and the first information.

[0167] The uplink signal is sent by the terminal device with the second transmission power.

[0168] It can be understood that, relative to the first transmission power, the second transmission power can be regarded as a new transmission power. The new transmission power can be higher than 23 dBm, so that the terminal device can transmit with high power.

[0169] According to a communication method provided by an embodiment of the present application, the network device can instruct the power adjustment amount, so that the terminal device can obtain a new transmission power according to the initial transmission power and the power adjustment amount, and perform uplink communication with the new transmission power, thereby flexibly adjusting the transmission power of the terminal device.

[0170] The above embodiments describe that the network device can instruct the terminal device to adjust the transmission power by instructing the first power adjustment amount. The following embodiments will describe how the terminal device specifically adjusts the power based on the first power adjustment amount:

[0171] Such asFigure 4 As shown in the figure, it is a schematic flowchart of another communication method provided by an embodiment of the present application. Exemplarily, the method may include the following steps:

[0172] S401. The network device sends second information to the terminal device. Correspondingly, the terminal device receives the second information.

[0173] To meet the human radiation requirements, the network device cannot instruct the terminal device to always perform high-power transmission. Therefore, it is necessary to indicate the effective duration of the first power adjustment amount.

[0174] In this embodiment, the network device may send second information to the terminal device, and the second information is used to indicate the effective duration of the first power adjustment amount. Exemplarily, the second information includes the effective duration of the first power adjustment amount, or includes the basic amount of the effective duration of the first power adjustment amount.

[0175] Exemplarily, the second information may be carried in RRC signaling, MAC CE, etc.

[0176] Furthermore, the RRC signaling or MAC CE, etc. may further include indication information of the maximum transmission power P EMAX,c The terminal device may determine the first transmission power based on the maximum transmission power configured by the network device.

[0177] S402. The terminal device obtains the first transmission power.

[0178] For the specific implementation of this step, reference may be made to Figure 3 Step S301 of the embodiment shown in the figure, which will not be elaborated here.

[0179] S403. The network device sends first information to the terminal device. Correspondingly, the terminal device receives the first information.

[0180] Wherein, the first information is used to indicate the first power adjustment amount.

[0181] For the specific implementation of this step, reference may be made to Figure 3 Step S302 of the embodiment shown in the figure.

[0182] Further, to meet the human body radiation requirements, the network device can also indicate the effective period of the first power adjustment amount through the first information, so as to prevent the terminal device from always transmitting at a high power. Among them, the first information is also used to indicate the effective period of the first power adjustment amount, and the effective period includes at least one of the following information: start effective time, effective duration, end effective time. For example, the first information can indicate the start effective time and the end effective time, so that the effective duration can be determined; for another example, the first information can indicate the start effective time, and the effective duration can be predefined or preconfigured; for another example, the first information can indicate the end effective time, and the start effective time is determined according to a preset rule.

[0183] Alternatively, the first information is also used to indicate the effective duration of the first power adjustment amount. Exemplarily, the first information includes the effective duration of the first power adjustment amount, or includes the offset of the effective duration of the first power adjustment amount.

[0184] When the above second information indicates the basic amount of the effective duration of the first power adjustment amount, the effective duration of the first power adjustment amount is equal to the sum of the basic amount and the offset of the effective duration indicated by the first information.

[0185] This embodiment does not limit the execution order of steps S401 and S403. The two steps can be executed simultaneously, that is, the network device can indicate the effective duration of the first power adjustment amount through the second information while indicating the first power adjustment amount through the first information; it can also execute S401 first and then S403, that is, the network device can indicate the effective duration of the first power adjustment amount in advance through the second information before indicating the first power adjustment amount through the first information; or execute S403 first and then S401, that is, the network device can indicate the effective duration of the first power adjustment amount through the second information after indicating the first power adjustment amount through the first information.

[0186] S404. The terminal device sends the third information to the network device. Correspondingly, the network device receives the third information.

[0187] Among them, the third information is used to indicate whether the first information is successfully received.

[0188] Exemplarily, when the first information is carried in the MAC CE, when the HARQ of the process carrying the MAC CE message is enabled, decoding the MAC CE requires providing an acknowledgement (ACK) or non-acknowledgement (NACK) feedback. The third information can be the ACK or NACK feedback.

[0189] When the first information is carried in a MAC CE, and when the HARQ of the process carrying the MAC CE message is closed, decoding the MAC CE does not require providing ACK or NACK feedback.

[0190] This step is an optional step.

[0191] S405. The terminal device performs uplink communication with a second transmission power. Accordingly, the network device receives an uplink signal from the terminal device.

[0192] Wherein, the second transmission power is obtained according to the first transmission power and the first information. The uplink signal is sent by the terminal device with the second transmission power.

[0193] For the specific implementation of this step, reference may be made to Figure 3 step S303 of the embodiment shown, which will not be elaborated here.

[0194] It can be understood that within the effective duration of the first power adjustment amount, the terminal device performs uplink communication with the second transmission power; after the first power adjustment amount becomes invalid, the terminal device will return to the first transmission power or the default transmission power level for uplink communication.

[0195] The following specifically introduces the implementation manner of the start effective time of the first power adjustment amount:

[0196] One implementation is that since the terminal device needs to parse the first information after receiving it, the first power adjustment amount can start to take effect after a first time after the terminal device receives the first information. Further, the terminal device performs power adjustment based on the first power adjustment amount, and the terminal device needs to perform uplink communication with the adjusted power on the uplink subframe. Therefore, the start effective time of the first power adjustment amount is specifically the start moment of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the first time after receiving the first information.

[0197] The first time can be agreed upon by the protocol or configured by the network device, which is not limited in this embodiment.

[0198] Exemplarily, the above first time can be 0, that is, the first power adjustment amount can start to take effect when the terminal device receives the first information.

[0199] Exemplarily, the first information is carried in a MAC CE. If the HARQ of the process carrying the MAC CE message is enabled, and if the ACK / NACK feedback is within the above first time, the terminal device sends the ACK / NACK with the first transmission power; if the ACK / NACK feedback is after the above first time, the terminal device sends the ACK / NACK with the second transmission power.

[0200] Another implementation is that since the terminal device needs to parse the first information after receiving it, the first power adjustment amount takes effect after a second time after the third information is sent. Further, the terminal device performs power adjustment based on the first power adjustment amount. The terminal device needs to perform uplink communication based on the adjusted power on the uplink subframe. Therefore, the starting effective time of the first power adjustment amount is specifically the starting moment of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the second time after the third information is sent.

[0201] The second time can be agreed upon by the protocol or configured by the network device, which is not limited in this embodiment.

[0202] Exemplarily, the first information is carried in the MAC CE, and the HARQ of the process carrying this MAC CE message is enabled, that is, decoding this MAC CE requires providing ACK or NACK feedback. The first power adjustment amount takes effect after the ACK or NACK feedback is sent, and the terminal device sends the ACK / NACK using the first transmission power.

[0203] Another implementation is that since the terminal device needs to parse the first information after receiving it, the first power adjustment amount takes effect when the third information is sent. Further, the terminal device performs power adjustment based on the first power adjustment amount. The terminal device needs to perform uplink communication based on the adjusted power on the uplink subframe. Therefore, the starting effective time of the first power adjustment amount is specifically the starting moment of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the third information is sent.

[0204] Exemplarily, the first information is carried in the MAC CE, and the HARQ of the process carrying this MAC CE message is enabled, that is, decoding this MAC CE requires providing ACK or NACK feedback. The ACK / NACK can be sent using the power adjusted based on the first power adjustment amount.

[0205] Another implementation is that the first power adjustment amount takes effect when the first transmission power is invalid. The first transmission power can be determined according to the second power adjustment amount, and the second power adjustment amount has a certain effective duration. The first power adjustment amount takes effect at the end of the effective time of the second power adjustment amount, that is, it takes effect when the first transmission power is invalid. Further, the terminal device performs power adjustment based on the first power adjustment amount. The terminal device needs to perform uplink communication based on the adjusted power on the uplink subframe. Therefore, the starting effective time of the first power adjustment amount is specifically the starting moment of the first uplink subframe, and the first uplink subframe is the first uplink subframe after the end of the effective time of the first transmission power.

[0206] In another implementation, within the effective duration of the second power adjustment amount, the first information is received. The first information indicates the first power adjustment amount. The start effective time of the first power adjustment amount can also be combined with the above several implementation manners. Whether within the effective duration of the second power adjustment amount or not, the adjustment can start using the first power adjustment amount, that is, the start effective time of the first power adjustment amount can be within the effective duration of the second power adjustment amount or after the effective duration of the second power adjustment amount.

[0207] The first power adjustment amount can be adjusted based on the first transmission power adjusted by the second power adjustment amount, or based on the transmission power before the second power adjustment amount.

[0208] S406. The terminal device sends the fourth information to the network device. Correspondingly, the network device receives the fourth information. This step is an optional step.

[0209] After the terminal device is scheduled to perform high-power transmission for a period of time, the terminal device can count the duration of its own high-power transmission and send the fourth information. The fourth information is used to indicate whether it supports subsequent transmission in the first power mode. The first power mode is the high-power transmission mode. The first power mode is relative to the default power mode. In the default power mode, the transmission power is, for example, 23 dBm. By sending the fourth information, the terminal device enables its transmission power to be within the requirements of human body radiation. The network device can determine whether to perform power adjustment and the amount of adjustment based on the fourth information.

[0210] Exemplarily, the above fourth information can be carried in at least one of the following information: buffer state report (BSR), hybrid automatic repeat request feedback information, or random access request.

[0211] The terminal device can implicitly or explicitly indicate whether it supports subsequent transmission in the first power mode through at least one of the above information:

[0212] Among them, the terminal device periodically reports the buffer state report to the network device. The terminal device can indicate whether it supports subsequent transmission in the first power mode through the buffer state report.

[0213] In one example, to improve the reliability of the transmitted cache status report, the terminal device scrambles the cache status report. In this example, the terminal device scrambles the cache status report using a first scrambling method. When the network device receives the cache status report scrambled using the first scrambling method, it can know that the terminal device supports continuing to transmit in the first power mode. Thus, this method can indicate whether the terminal device supports continuing to transmit in the first power mode. If the terminal device scrambles the cache status report using other scrambling methods, it does not indicate whether the terminal device supports continuing to transmit in the first power mode, or indicates that the terminal device does not support continuing to transmit in the first power mode. This method does not add new indication overhead and is an implicit indication method.

[0214] In another example, the terminal device can add indication information to the cache status report. This indication information is used to indicate whether the terminal device supports continuing to transmit in the first power mode. For example, if the indication information is 1 bit and the value of this 1 bit is "1", it means that the terminal device supports continuing to transmit in the first power mode. If the value of this 1 bit is "0", it means that the terminal device does not support continuing to transmit in the first power mode.

[0215] Among them, when the network device adjusts the power of the terminal device through MAC CE, that is, MAC CE indicates the first power adjustment amount, and when HARQ feedback is enabled, the terminal device needs to send hybrid automatic repeat request feedback information to the network device, that is, ACK / NACK. The terminal device can indicate whether it supports continuing to transmit in the first power mode through the hybrid automatic repeat request feedback information.

[0216] In one example, to improve the reliability of the transmitted hybrid automatic repeat request feedback information, the terminal device scrambles the hybrid automatic repeat request feedback information. In this example, if the terminal device scrambles the hybrid automatic repeat request feedback information using a second scrambling method, the network device receives the hybrid automatic repeat request feedback information scrambled using the second scrambling method, and thus can know that the terminal device supports continuing to transmit in the first power mode. Thus, this method can indicate whether the terminal device supports continuing to transmit in the first power mode. If the terminal device scrambles the hybrid automatic repeat request feedback information using other scrambling methods, it does not indicate whether the terminal device supports continuing to transmit in the first power mode, or indicates that the terminal device does not support continuing to transmit in the first power mode. This method does not add new indication overhead and is an implicit indication method.

[0217] In another example, the terminal device may add indication information to the hybrid automatic repeat request feedback information, where the indication information is used to indicate whether the terminal device supports continuing to transmit in the first power mode. For example, the indication information is 1 bit. If the value of this 1 bit is "1", it means that the terminal device supports continuing to transmit in the first power mode; if the value of this 1 bit is "0", it means that the terminal device does not support continuing to transmit in the first power mode.

[0218] Among them, when the terminal device accesses the network, it initiates random access to the network device. The terminal device can indicate whether it supports transmitting in the first power mode subsequently by sending a specific random access preamble sequence to the network device. For example, the terminal device sends the first random access preamble sequence to indicate whether it supports transmitting in the first power mode subsequently. When the network device receives this first random access preamble sequence, it can know that the terminal device supports transmitting in the first power mode subsequently; when the terminal device sends other random access preamble sequences, it does not indicate whether the terminal device supports continuing to transmit in the first power mode, or indicates that the terminal device does not support continuing to transmit in the first power mode. This indication method does not increase new overhead, thus saving signaling overhead.

[0219] According to a communication method provided by an embodiment of the present application, the network device makes the terminal device obtain a new transmission power according to the initial transmission power and the power adjustment amount by indicating the power adjustment amount, and performs uplink communication with the new transmission power, so that the transmission power of the terminal device can be flexibly adjusted;

[0220] To meet the human radiation requirements, the network device can also indicate the effective duration of the first power adjustment amount through the second information, so as to prevent the terminal device from always transmitting at a high power and enable the terminal device to accurately adjust the transmission power;

[0221] After the terminal device is scheduled to transmit at a high power for a period of time, the terminal device can itself count the duration of transmitting at a high power and send the fourth information to indicate whether it supports transmitting in the first power mode.

[0222] The above method is applicable to any terminal device, especially applicable to terminal devices that support frequency division duplexing (FDD). This method can more flexibly support the transmission power adjustment of FDD high-power terminal devices, and at the same time meet the human radiation requirements.

[0223] It can be understood that in the above various embodiments, the methods and / or steps implemented by the terminal device can also be implemented by components (such as chips or circuits) for the terminal device; the methods and / or steps implemented by the network device can also be implemented by components (such as chips or circuits) for the network device.

[0224] The above mainly introduces the solution provided by the embodiments of the present application from the perspective of the interaction between the terminal device and the network device. Correspondingly, the embodiments of the present application also provide a communication device, which is used to implement the above various methods. The communication device can be the terminal device in the above method embodiments, or a component that can be used in the terminal device; or, the communication device can be the network device in the above method embodiments, or a component that can be used in the network device. It can be understood that, in order to implement the above functions, the communication device includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, combining the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described function for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0225] The embodiments of the present application can divide the functional modules of the communication device according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of modules in the embodiments of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0226] Based on the same concept of the above communication method, the present application also provides the following communication device:

[0227] As Figure 5 shown, it is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 500 includes a transceiver unit 501 and a processing unit 502; wherein:

[0228] When the communication device is used to implement the functions of the terminal device in the above method embodiments, the transceiver unit 501 is used to execute the operations of the terminal device in steps S302 and S303 in the embodiment shown as Figure 3 shown, and the processing unit 502 is used to execute step S301 in the embodiment shown as Figure 3 shown; or, the transceiver unit 501 is used to execute the operations of the terminal device in steps S401, S403 - S406 in the embodiment shown as Figure 4 shown, and the processing unit 502 is used to execute step S402 in the embodiment shown as Figure 4 shown.

[0229] When the communication device is used to implement the functions of the network device in the above method embodiments, the transceiver unit 501 is used to perform the operations of the network device in steps S302 and S303 in the embodiments shown in Figure 3 ; or, the transceiver unit 501 is used to perform the operations of the network device in steps S401, S403 to S406 in the embodiments shown in Figure 4 .

[0230] For the specific implementation of the above transceiver unit 501 and processing unit 502, reference may be made to the description in the above method embodiments.

[0231] As Figure 6 shown, it is a schematic structural diagram of another communication device provided by an embodiment of the present application. The communication device 600 includes one or more processors 601 (one processor is illustrated in the figure). Optionally, the communication device 600 may further include an interface circuit 602 (shown by a dashed line in the figure), and the processor 601 and the interface circuit 602 are coupled to each other. It can be understood that the interface circuit 602 may be a transceiver or an input / output interface. Optionally, the communication device 600 may further include a memory 603 (shown by a dashed line in the figure). The memory 603 is used to store instructions executed by the processor 601, or store input data required for the processor 601 to run the instructions, or store data generated after the processor 601 runs the instructions.

[0232] Wherein, when the communication device is used to implement the functions of the terminal device in the above method embodiments, the interface circuit 602 is used to perform the operations of the terminal device in steps S302 and S303 in the embodiments shown in Figure 3 , and the processor 601 is used to perform step S301 in the embodiments shown in Figure 3 ; or, the interface circuit 602 is used to perform the operations of the terminal device in steps S401, S403 to S406 in the embodiments shown in Figure 4 , and the processor 601 is used to perform step S402 in the embodiments shown in Figure 4 .

[0233] When the communication device is used to implement the functions of the network device in the above method embodiments, the interface circuit 602 is used to perform the operations of the network device in steps S302 and S303 in the embodiments shown in Figure 3 ; or, the interface circuit 602 is used to perform the operations of the network device in steps S401, S403 to S406 in the embodiments shown in Figure 4 .

[0234] When the above communication device is a chip applied to a terminal device, the chip implements the functions of the terminal device in the above method embodiments. The chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by a network device to the terminal device; or, the chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the terminal device to the network device.

[0235] When the above communication device is a chip applied to a network device, the chip implements the functions of the network device in the above method embodiments. The chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the terminal device to the network device; or, the chip sends information to other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the network device to the terminal device.

[0236] In addition, it should be noted that the foregoing transceiver unit and / or processing unit may be implemented by a virtual module. For example, the processing unit may be implemented by a software functional unit or a virtual device, and the transceiver unit may be implemented by a software function or a virtual device. Or, the processing unit or the transceiver unit may also be implemented by a physical device. For example, if the device is implemented by a chip / chip circuit, the transceiver unit may be an input / output circuit and / or a communication interface, performing an input operation (corresponding to the foregoing receiving operation) and an output operation (corresponding to the foregoing sending operation); the processing unit is an integrated processor or a microprocessor or an integrated circuit.

[0237] The division of modules in this application is illustrative, merely a logical function division. In actual implementation, there may be other division methods. In addition, in each example of this application, the various functional modules may be integrated in a processor, may exist separately physically, or two or more modules may be integrated in one module. The above integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0238] It can be understood that the processor in the embodiments of this application may be a central processing unit (CPU), and may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0239] The embodiments of the present application also provide a computer-readable storage medium, in which computer programs or instructions are stored. When the computer programs or instructions are executed, the methods in the above embodiments are implemented.

[0240] The embodiments of the present application also provide a computer program product containing instructions. When the instructions run on a computer, the computer is caused to execute the methods in the above embodiments.

[0241] The embodiments of the present application also provide a communication system, including the above-mentioned communication device.

[0242] The embodiments of the present application also provide a circuit, which is coupled to a memory and is used to execute the method shown in the above embodiments. The circuit may include a chip circuit.

[0243] When the above-mentioned communication device is a module applied to a network device, the network device module implements the functions of the network device in the above method embodiments. The network device module receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by a terminal device to the network device; or, the network device module sends information to other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the network device to the terminal device. Here, the network device module may be a baseband chip of the network device, or a CU, a DU or other modules, or a device under the O-RAN architecture, such as an open CU, an open DU, etc.

[0244] It should be noted that the above unit or one or more of the units can be implemented by software, hardware, or a combination of both. When any of the above units is implemented by software, the software exists in the form of computer program instructions and is stored in a memory. The processor can be used to execute the program instructions and implement the above method flow.

[0245] In the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Or, all or part of the circuits for implementing the processing function in the foregoing devices can implement or execute the various methods, steps, and logic block diagrams disclosed in the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the present application can be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0246] When the above units or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, an SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator, or a non-integrated discrete device, which can run the necessary software or execute the above method flow without relying on software.

[0247] Optionally, an embodiment of the present application further provides a chip system, including: at least one processor and an interface. The at least one processor is coupled to a memory through the interface. When the at least one processor runs a computer program or instruction in the memory, the chip system is enabled to execute the method in any one of the above method embodiments. Optionally, the chip system may be composed of chips or may include chips and other discrete devices. The embodiments of the present application do not make specific limitations thereto.

[0248] The memory in the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data. The memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. For example, the memory may be a non-volatile memory, such as a digital versatile disc (DVD), a hard disk drive (HDD), or a solid-state drive (SSD), etc., or may also be a volatile memory, such as a random-access memory (RAM).

[0249] As used in the present application, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes other unlisted steps or units, or optionally further includes other steps or units inherent to these processes, methods, products, or devices. It should be noted that in the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any method or design solution described as "exemplary" or "for example" in the present application should not be construed as being more preferred or having more advantages than other methods or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0250] It should be understood that in the description of this application, unless otherwise specified, " / " means that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B; where A and B can be singular or plural. Also, in the description of this application, unless otherwise specified, "a plurality of" means two or more than two. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of a single item or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple. Additionally, to facilitate a clear description of the technical solutions of the embodiments of this application, in the embodiments of this application, terms such as "first" and "second" are used to distinguish between identical or similar items with basically the same functions and roles. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order, and terms such as "first" and "second" do not necessarily mean different. At the same time, in the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner for easy understanding.

[0251] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are generated in whole or in part. The computer can be a general - purpose computer, a special - purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer - readable storage medium, or transmitted from one computer - readable storage medium to another computer - readable storage medium. For example, the computer instructions can be transmitted from one website, computer, network device, or data center to another website, computer, network device, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.).

[0252] Although the present application has been described in connection with various embodiments, those skilled in the art will appreciate and realize other variations of the disclosed embodiments by viewing the accompanying drawings, the disclosure, and the appended claims. In the claims, a single processor or other unit may implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to achieve good results.

[0253] It should be understood that the various numerical numbers involved in the embodiments of the present application are only for convenience of description and are not used to limit the scope of the embodiments of the present application. The magnitudes of the serial numbers of the above processes do not imply the order of execution, and the order of execution of each process should be determined by its function and internal logic.

[0254] In the above embodiments, the descriptions of the various embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0255] The components in the device embodiments of the present application can be combined, divided, and deleted according to actual needs. Those skilled in the art can combine or combine the different embodiments and the features of different embodiments described in this specification.

[0256] In the present application, on the premise of no logical contradiction, the examples can refer to each other. For example, the methods and / or terms between method embodiments can refer to each other, for example, the functions and / or terms between device embodiments can refer to each other, for example, the functions and / or terms between device examples and method examples can refer to each other.

Claims

1. A communication method, characterized in that, The method includes: Obtain a first transmission power; Receive first information, where the first information is used to indicate a first power adjustment amount; Perform uplink communication with a second transmission power, where the second transmission power is obtained according to the first transmission power and the first information.

2. The method according to claim 1, characterized in that, The first transmission power is based on the maximum transmission power configured by the network device.

3. The method according to claim 1 or 2, characterized in that, The first information is further used to indicate the effective duration of the first power adjustment amount.

4. The method according to any one of claims 1-3, characterized in that, The method further includes: Receive second information, where the second information is used to indicate the effective duration of the first power adjustment amount.

5. The method according to any one of claims 1-4, characterized in that: The first power adjustment amount starts to take effect after a first time since receiving the first information; or The first power adjustment amount starts to take effect after a second time since sending third information; or The first power adjustment amount takes effect when sending the third information; or The first power adjustment amount takes effect when the first transmission power is invalid; where the third information is used to indicate whether the first information is successfully received.

6. The method according to any one of claims 1-5, characterized in that, The starting effective time of the first power adjustment amount is the starting moment of the first uplink subframe, and the first uplink subframe is any one of the following: The first uplink subframe after the first time since receiving the first information; or The first uplink subframe after the second time since sending the third information; or The first uplink subframe after sending the third information; or The first uplink subframe after the ending effective time of the first transmission power.

7. The method according to any one of claims 1-6, characterized in that, The method further includes: Send fourth information, where the fourth information is used to indicate whether it supports sending in a first power mode.

8. The method according to claim 7, characterized in that, The fourth information is carried in at least one of the following information: buffer status report, hybrid automatic repeat request feedback information, or random access request.

9. A communication method, characterized in that, The method includes: Send first information, where the first information is used to indicate a first power adjustment amount; Receive an uplink signal from the terminal device, where the uplink signal is sent with a second transmission power, and the second transmission power is obtained according to the first transmission power and the first information.

10. The method according to claim 9, characterized in that, The first transmission power is based on the maximum transmission power configured by the network device.

11. The method according to claim 9 or 10, characterized in that, The first information is further used to indicate the effective duration of the first power adjustment amount.

12. The method according to any one of claims 9-11, characterized in that, The method further includes: Send second information, where the second information is used to indicate the effective duration of the first power adjustment amount.

13. The method according to any one of claims 9-12, characterized in that: The first power adjustment amount starts to take effect after a first time since the terminal device receives the first information; or The first power adjustment amount starts to take effect after a second time since the terminal device sends third information; or The first power adjustment amount takes effect when the terminal device sends the third information; or The first power adjustment amount takes effect when the first transmission power is invalid; where the third information is used to indicate whether the first information is successfully received.

14. The method according to any one of claims 9-13, characterized in that, The starting effective time of the first power adjustment amount is the starting moment of the first uplink subframe, and the first uplink subframe is any one of the following: The first uplink subframe after the first time since the terminal device receives the first information; or The first uplink subframe after the second time since the terminal device sends the third information; or The first uplink subframe after the terminal device sends the third information; or The first uplink subframe after the end effective time of the first transmission power.

15. The method according to any one of claims 9-14, characterized in that, The method further includes: Receiving fourth information, where the fourth information is used to indicate whether it supports sending in the first power mode.

16. The method according to claim 15, characterized in that, The fourth information is carried in at least one of the following information: buffer status report, hybrid automatic repeat request feedback information, or random access request.

17. A communication device, characterized in that, It includes a unit for implementing the method according to any one of claims 1-8, or includes a unit for implementing the method according to any one of claims 9-16.

18. A communication system, characterized in that, It includes a terminal device and a network device, where the terminal device is used to execute the method according to any one of claims 1-8, and the network device is used to execute the method according to any one of claims 9-16.

19. A communication device, characterized in that, It includes a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that when the processor executes the computer program, it implements the method according to any one of claims 1-8, or implements the method according to any one of claims 9-16.

20. A computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is executed, the method according to any one of claims 1-16 is executed.

21. A computer program product containing instructions, which, when the instructions run on a communication device, cause the communication device to execute the method according to any one of claims 1-16.

22. A chip, characterized in that, The chip is coupled to the memory, and the chip is used to execute the method according to any one of claims 1-16.

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