CN115150928A - Power control method and related equipment - Google Patents

Abstract

The present disclosure provides a power control method and related device; relates to the technical field of communication. The method comprises the following steps: receiving a Radio Resource Control (RRC) release message issued by network equipment, and recording first transmission power information and first uplink channel state information of a current Physical Uplink Shared Channel (PUSCH); after the terminal equipment enters an inactive state, determining second transmitting power of small data transmission according to the information; and controlling the terminal equipment in the non-activated state, and sending the uplink small data to the network equipment by adopting the second transmitting power. The method and the device can solve the problems of high signaling overhead and high power consumption in the process of transmitting the uplink small data by the non-activated terminal equipment in the related technology.

Description

Power control method and related equipment

technical field

The present disclosure relates to the field of communication technologies, and in particular, to a power control method and related devices.

Background technique

5G (5th Generation Mobile Communication Technology, fifth-generation mobile communication technology), as the next-generation wireless network communication technology, has the characteristics of supporting ultra-broadband and large connections. For the 5G technology, in order to reduce the signaling overhead caused by the movement process and the state transition process, the network configures the user terminal with infrequent data transmission to the RRC (Radio Resource Control, Radio Resource Control) inactive state.

In the related art, a terminal in an inactive state can support small data packet transmission (Small Data Transmission, SDT), and SDT is mainly performed through a scheduling-free configuration authorization resource or a random access process. However, for the uplink SDT in the inactive state, due to the inability to perform reasonable power control on the uplink SDT, the transmission failure rate of the uplink SDT is high, which in turn causes high signaling overhead and power consumption.

It should be noted that the information disclosed in the above Background section is only for enhancement of understanding of the background of the present disclosure, and therefore may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present disclosure is to provide a power control method and device, a storage medium, and a network device, thereby solving to a certain extent the high signaling overhead and power consumption in the process of uplink small data transmission performed by inactive terminal devices in the related art. consumption problem.

According to a first aspect of the present disclosure, a power control method is provided, applied to a terminal device, the method includes:

Receive the radio resource control RRC release message issued by the network device, and record the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; the RRC release message includes the inactive state uplink small data transmission configuration information , the inactive state uplink small data transmission configuration information is the configuration resource of uplink small data sent to the terminal device when the terminal device transitions from the connected state to the inactive state; when the terminal device is in the inactive state , the terminal device determines the second transmission power of small data transmission according to the configuration information of the inactive uplink small data transmission, the first transmission power information and the first uplink channel state information; the control is in the inactive state The terminal device that uses the second transmit power to send uplink small data to the network device.

Optionally, the method further includes: when the RRC recovery request message is successfully sent, receiving a feedback message from the network device and an updated value of the second closed-loop power control correction value; based on the update of the second closed-loop power control correction value value, adjust the second transmit power, and the update value of the second closed-loop power control correction value is determined by the network device according to the second uplink channel state information.

Optionally, the method further includes: when the sending of the RRC recovery request message fails, adjusting the second closed-loop power control correction value by using the single adjustment maximum value of the power adjustment parameter to obtain retransmission power ; Use the retransmission power to retransmit the PUSCH of the uplink small data.

Optionally, the RRC release message further includes suspension configuration information, where the suspension configuration information includes configuration information for inactive uplink small data transmission and power control information for inactive uplink small data transmission.

According to a second aspect of the present disclosure, a power control method is provided, applied to a network device, the method includes: delivering an RCC release message to a terminal device, so that the terminal device records the first transmission of the current physical uplink shared channel PUSCH power information and first uplink channel state information; and after the terminal device enters the inactive state, uplink small data transmission configuration information, the first transmit power information and the first uplink channel state according to the inactive state information to determine the second transmit power for small data transmission; receive uplink small data sent by the terminal device in the inactive state using the second transmit power; wherein the RRC release message includes the inactive state uplink small data transmission configuration information , the inactive state uplink small data transmission configuration information is the configuration resource of inactive state uplink small data.

According to a third aspect of the present disclosure, a terminal device is provided, the terminal device includes: a receiving module, a determining module, and a sending module; the receiving module is configured to receive a radio resource control release message sent by a network device, and record the current First transmit power information and first uplink channel state information of the physical uplink shared channel PUSCH; the radio resource control RRC release message includes inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is Configuration resources of uplink small data in the inactive state; a determination module, configured to transmit configuration information, the first transmit power information and the first transmission power according to the uplink small data in the inactive state after the terminal device enters the RRC inactive state Uplink channel state information, the second transmit power for small data packet transmission is determined by the power control formula; the sending module is used to control the terminal device in the inactive state, and use the second transmit power to send the uplink to the network device small data.

Optionally, the receiving module is further configured to receive a feedback message from the network device and an updated value of the second closed-loop power control correction value when the RRC recovery request message is successfully sent.

The terminal device further includes: a first adjustment module configured to adjust the second transmit power based on an updated value of the second closed-loop power control correction value, where the updated value of the second closed-loop power control correction value is a network It is determined by the device according to the second uplink channel state information.

Optionally, the terminal device further includes: a second adjustment module and a retransmission module; a second adjustment module, configured to use the single adjustment maximum value pair of the power adjustment parameter when the RRC recovery request message fails to be sent. The second closed-loop power control correction value is adjusted to obtain retransmission power; a retransmission module is used to perform PUSCH retransmission of uplink small data by using the retransmission power.

According to a fourth aspect of the present disclosure, a network device is provided, comprising: a sending module and a receiving module, the sending module is configured to issue an RCC release message to a terminal device, so that the terminal device records the first data of the current physical uplink shared channel PUSCH transmit power information and first uplink channel state information; and after the terminal device enters the inactive state, uplink small data transmission configuration information, the first transmit power information and the first uplink channel according to the inactive state status information, to determine the second transmit power for small data packet transmission; a receiving module, configured to receive uplink small data sent by the terminal device in the inactive state using the second transmit power; wherein, the RRC release message includes the inactive state The configuration information of uplink small data transmission in the inactive state is the configuration resource of the uplink small data in the inactive state.

According to a fifth aspect of the present disclosure, there is provided a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements any one of the above-mentioned methods.

According to a sixth aspect of the present disclosure, there is provided a communication device, comprising: at least one processor and a communication interface; and a communication interface, the communication interface is used for the communication device to exchange information with other communication devices, when the program instruction is in the When executed in the at least one processor, any one of the above methods is implemented.

According to a seventh aspect of the present disclosure, a communication system is provided, including the terminal device and the network device of each of the foregoing embodiments.

Exemplary embodiments of the present disclosure may have some or all of the following benefits:

In the power control method provided by the exemplary embodiment of the present disclosure, by receiving the RRC release message issued by the network device, and recording the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; When the device is in the inactive state, it determines the second transmission power of the PUSCH for small data transmission according to the uplink small data transmission configuration information, the first transmission power information and the first uplink channel state information in the inactive state; and controls the device in the inactive state. The terminal device in the active state uses the second transmit power to send uplink small data to the network device. The present disclosure can improve the small data transmission PUSCH uplink transmission success rate of the terminal equipment in the inactive state, thereby reducing the signaling overhead and power consumption of the uplink small data transmission of the terminal equipment in the inactive state.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 schematically shows a system architecture diagram of a communication system according to an embodiment of the present disclosure.

FIG. 2 schematically shows one of the schematic flowcharts of a power control method according to an embodiment of the present disclosure.

FIG. 3 schematically shows the second schematic flowchart of a power control method according to an embodiment of the present disclosure.

FIG. 4 schematically shows a third schematic flowchart of a power control method according to an embodiment of the present disclosure.

FIG. 5 schematically shows a fourth schematic flowchart of a power control method according to an embodiment of the present disclosure.

FIG. 6 schematically shows a structural block diagram of a terminal device according to an embodiment of the present disclosure.

FIG. 7 schematically shows a structural block diagram of a network device according to an embodiment of the present disclosure.

Figure 8 schematically illustrates a block diagram of an exemplary communication device according to one embodiment of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be employed. In other instances, well-known solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated descriptions will be omitted. Some of the block diagrams shown in the figures are functional entities that do not necessarily necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

Referring to FIG. 1 , it is a schematic diagram of a communication system architecture of a power control method provided in some embodiments of the present disclosure. As shown in FIG. 1 , the system may include a terminal device 110 and a network device 120 . The terminal device 110 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal equipment may also be referred to as terminal equipment (Terminal), user equipment (User Equipment, UE), mobile station (Mobile Station, MS), mobile terminal equipment (Mobile Terminal, MT), and the like. The terminal device can be a car with a communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality) , AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid (Smart Grid) wireless terminal equipment in transportation safety (Transportation Safety), wireless terminal equipment in smart city (Smart City), wireless terminal equipment in smart home (Smart Home) and so on. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal device.

The network device 120 in the embodiment of the present disclosure may be any base station, a new radio eNB (new radio eNB), a transmission and reception point (TRP), a macro base station, a micro base station, a high frequency base station, etc. in the 5G network, and others A base station in a future mobile communication system or an access node in a wireless fidelity (Wireless Fidelity, WiFi) system, and the like. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the base station.

It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to the fifth generation mobile communication system 5G, 5G new radio (NR) system, or other future new mobile communication systems.

It should be understood that the numbers of terminal devices and network devices in FIG. 1 are merely illustrative. Depending on the implementation, there may be any number of terminal devices and network devices. This example does not specifically limit the number of terminal devices and network devices.

It can be understood that the system architecture described in the embodiments of the present disclosure is for the purpose of illustrating the technical solutions of the embodiments of the present disclosure more clearly, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. With the evolution of the system architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

While 5G network brings users an ultra-high speed and ultra-low latency service experience, it also brings greater challenges to the power consumption of 5G terminals. In order to reduce the power consumption caused by the inactive state terminal having to switch to the connected state for uplink data transmission, 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) proposes an uplink data transmission mechanism for the inactive state terminal.

For the power control of PUSCH (Physical Uplink Shared Channel), the power control formula defined in the TS38.213 protocol involves the open-loop configuration parameter P0, path loss compensation factor α, bandwidth M, path loss PL, closed-loop power Parameters such as adjustment value f, power offset based on MCS (Modulation and coding scheme, modulation and coding scheme). In order to improve the small data packet transmission efficiency of inactive terminals, the network issues inactive small data transmission resources based on configuration authorization in the RRC release message. Inactive terminals can determine open-loop configuration parameters based on the configuration authorization issued by the network. P0, path loss compensation factor α, bandwidth M and path loss PL.

However, during the uplink PUSCH transmission of the terminal in the inactive state, the terminal in the inactive state cannot receive the closed-loop power control parameters sent by the network during the first PUSCH transmission. The closed-loop control parameters require the network to measure the SRS (Sounding Reference Signal) or other uplink data, the inactive terminal will not send the uplink SRS signal or other uplink data to the network before sending the PUSCH data for the first time, so that the inactive terminal cannot obtain the network delivery. The closed-loop control parameters of the device cause a high failure rate of the first uplink data transmission, resulting in high signaling overhead and power consumption.

In order to further reduce the signaling overhead and power consumption of uplink small data transmission of inactive terminals, the present disclosure proposes a power control method for uplink small data transmission of inactive terminals. Referring to FIG. 2 , the power control method includes the following: Steps S210-S230.

Step S210: Receive the radio resource control RRC release message sent by the network device, and record the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH.

In this example implementation, when the network device is ready to release the connected state terminal into the inactive state, the network device sends an RRC release message with the suspension configuration to the terminal; the RRC release message may include the inactive state uplink small data transmission configuration information, the configuration information for uplink small data transmission in the inactive state is the configuration resource of uplink small data sent by the terminal device in the inactive state. The power control information for uplink small data transmission in the inactive state can be obtained through uplink scheduling-free resources (configuration grant Type 1) delivered by the network device.

In this example embodiment, the configuration information for uplink small data transmission in the inactive state may include a data radio bearer list for uplink small data transmission in the inactive state, which is used to indicate a data radio bearer identifier configured for uplink small data transmission. The configuration information for uplink small data transmission in the inactive state may further include configuration authorization information, which is used to indicate configuration authorization resources configured for uplink small data transmission.

In this example embodiment, the configuration grant information may include PUSCH configuration information, the PUSCH configuration information may include PUSCH time-frequency resource configuration information and PUSCH power control information, and the PUSCH time-frequency resource configuration information may include a first threshold, indicating the Configure the threshold value of the received power of the reference signal of the SSB (Synchronization Signal and PBCH block, synchronization signal block) authorized for uplink small data transmission; the bandwidth part configuration is used to indicate the configuration of the bandwidth configuration authorized for uplink small data transmission, for example, the bandwidth part configuration It may include a PUSCH resource for configuring a specific UE bandwidth part (Bandwidth Part, BWP), such as a time domain resource list, a frequency domain resource list, and a radio resource block size of the PUSCH, which is not limited in this example.

In this example embodiment, the PUSCH power control information may include at least one of the following: a transmit power control accumulation parameter of the terminal device, which is used to indicate the adjustment mode of the PUSCH transmit power control of the terminal device in an active state in an inactive state; The power adjustment parameter of the device is used to indicate the PUSCH transmission power adjustment value corresponding to the index value in the transmission power control command field of the terminal device in the inactive state; the first closed-loop power control correction value is used to indicate the terminal device in the inactive state. PUSCH transmit power adjustment value for small data uplink transmission. Other information related to PUSCH power control may also be included, which is not limited in this example.

In order to improve the small data packet transmission efficiency of inactive terminals, the network delivers inactive small data transmission resources based on configuration authorization in the RRC release message. Inactive terminals can determine the open-loop configuration parameters P0, Path loss compensation factor α, bandwidth M and path loss PL. Among them, the open-loop configuration parameter and path loss compensation factor are used to indicate the PUSCH open-loop power compensation item of the small data uplink transmission of the inactive terminal equipment; the bandwidth is used to indicate the PUSCH occupied by the small data uplink transmission of the inactive terminal equipment. Bandwidth information; path loss, used to indicate the small data uplink transmission PUSCH path loss information of the terminal device in the inactive state.

When the inactive uplink small data transmission configuration information includes configuration authorization information, the configuration authorization resource may be configured to the medium access control entity, and a first timer is started, where the first timer is used to indicate the configuration authorization The effective time of the information.

Exemplarily, the transmit power control accumulation parameter may be a terminal equipment (User Equipment, UE) specific parameter TPC-Accumulation (Transmit Power Control-Accumulation, transmit power control-accumulation). The accumulated adjustment value may be a UE-specific parameter δ _PUSCH ; δ _PUSCH corresponds to the index value in the TPC command field. For example, delta _PUSCH can be included in downlink control information (Downlink Control Information, DCI) format 0_0 or DCI format 0_1; or delta _PUSCH can also be included in DCI format 2_3 (which can be coded jointly with other TPC command fields), the delta _PUSCH The values are shown in Table 1 below.

Table 1 Power adjustment parameters corresponding to TPC commands in DCI

In this example embodiment, the first closed-loop power control correction value may be used for the first PUSCH transmission of the terminal in the inactive state. The current PUSCH power control adjustment state may be determined according to the transmit power control accumulation parameter, the power adjustment parameter and the first closed-loop power control correction value.

The power adjustment parameters may include cumulative adjustment values and absolute adjustment values. When the TPC-Accumulation turns on the accumulated value adjustment mode, the accumulated adjustment value may be used to adjust the first closed-loop power control correction value. Exemplarily, f(i,l)=f(ii ₀ ,l)+δ _PUSCH , where f(i,l) represents the first accumulated value at the i-th time, that is, the adjusted first closed-loop power Control correction value, f(ii ₀ , l) represents the first accumulated value at time ii ₀ , that is, the first closed-loop power control correction value after adjustment, i ₀ represents the initial time, and δ _PUSCH represents the cumulative adjustment value.

When the TPC-Accumulation does not enable the accumulated value adjustment mode, the absolute adjustment value is assigned to the first closed-loop power control correction value, so as to adjust the current first closed-loop power control correction value. The delta _PUSCH may be notified and obtained by downlink control information (Downlink Control Information, DCI) format 0_0 or DCI format 0_1 or DCI format 2_3.

In the present exemplary embodiment, the acquisition process of the first uplink channel state information is: before the terminal device enters the inactive state (connected state), receive the uplink channel measurement configuration information issued by the network device; and periodically report to the network device accordingly. Sending an uplink channel sounding reference signal (Sounding Reference Signal, SRS), so that the network device acquires and delivers the first uplink channel state information by measuring the uplink channel sounding reference signal. The process of obtaining the bandwidth is as follows: the network device sends a resource request message based on the network sent by the terminal device, and determines and delivers the uplink transmission bandwidth according to the uplink buffer status report of the terminal device and the current network resources; the first closed-loop power control correction The value of the uplink transmission signal power is adjusted through the transmission power control command carried in the downlink control information; the open-loop configuration parameter and the set of path loss compensation factors are obtained through system messages.

In some embodiments, the method further includes: receiving an association relationship between the inactive configuration authorization resource and the synchronization signal block SSB sent by the network device.

Step S220, after the terminal device enters the inactive state, determine the first small data transmission mode according to the inactive state uplink small data transmission configuration information, the first transmit power information and the first uplink channel state information. 2. Transmit power.

In this example implementation, in order to successfully transmit the first PUSCH transmission, the inactive terminal can perform the following steps:

In the first step, SSB measurement can be performed to determine the path loss of the terminal equipment in the inactive state and the second uplink channel state information in the inactive state; The target synchronization signal block that meets the small packet transmission threshold is selected from the SSB of the association relationship.

In this example, the second uplink channel state information refers to the channel state information when the terminal in the inactive state transmits the PUSCH for the first time, and can be obtained through SSB measurement.

In the second step, the open-loop configuration parameters and path loss compensation factors of the terminal equipment in the inactive state are obtained through system messages.

In the third step, the uplink bandwidth of the terminal equipment in the inactive state is determined in the bandwidth part configuration through the RRC release message.

Step 4: In response to the comparison result of the first uplink channel state information and the second uplink channel state information, adjust the first closed-loop power control correction value to obtain the second closed-loop power control correction value.

In this example embodiment, the current second uplink channel state information and the first uplink channel state information when the RRC release message is received can be compared and analyzed by measuring the SSB, and combined with the first transmission of the PUSCH recorded when the RRC release message is received power information, and appropriately adjust the first closed-loop power control correction value f to improve the transmission success rate of the first PUSCH transmission.

Exemplarily, if the current second uplink channel state information is worse than the first uplink channel state information, the first power control correction value may be appropriately increased; if the current second uplink channel state information is better than the first uplink channel state information , the first power control correction value can be appropriately reduced; the adjusted first power control correction value is the second power control correction value.

In the process of determining the second transmit power, the terminal device may adjust the uplink transmit signal power through a TPC (Transmission Power Control, transmission power control) command carried in the downlink control information (Downlink Control Information, DCI), and the power adjustment method may be The closed-loop power control TPC command can be divided into two modes: cumulative adjustment mode and absolute adjustment mode. The accumulative adjustment mode is based on the original transmit power, and performs accumulative summation according to the adjustment value corresponding to the TPC command, which is used for the next uplink signal transmission. In the absolute adjustment mode, the power value corresponding to the TPC command is directly used for the next uplink signal transmission. The cumulative adjustment mode is applicable to PUSCH, PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) and SRS, and the absolute adjustment mode is only applicable to PUSCH. The accumulative adjustment and absolute value adjustment are semi-statically handed over by higher layer RRC signaling.

Step 5: According to the path loss of the inactive terminal equipment, the open-loop configuration parameters and path loss compensation factors of the inactive terminal equipment, the uplink bandwidth of the inactive terminal equipment, and the second closed loop A power control adjustment value, and the second transmit power is determined through a power control formula.

In this example, the expression of the power control formula is:

P _PUSCH =min[P _max ,(P ₀ +10logM+αPL+f)]

Among them, P _PUSCH represents the PUSCH transmit power of the terminal device in the inactive state, P _max represents the maximum transmit power of the terminal device in the inactive state, P ₀ represents the open-loop configuration parameter of the terminal device in the inactive state, and M represents the Bandwidth occupied by PUSCH, α represents the path loss compensation factor of the inactive terminal device, PL represents the path loss of the inactive terminal device, f represents the second closed-loop power control adjustment value, and min represents the minimum value operation.

The transmit power of the first PUSCH transmission of the terminal in the inactive state can be determined by the above formula.

In the current log of the current network, the network side does not configure the MCS of △ to the terminal. At this time, △ in the original power control formula is 0, and △ is the power offset determined by the MCS level, so it is omitted from the formula in this disclosure. this item.

Step S230: Control the terminal device in an inactive state to send uplink small data to the network device by using the second transmit power.

In this example embodiment, the terminal device in the inactive state may be controlled to perform the first small data PUSCH transmission using the second transmit power.

So far, the first small data PUSCH transmission process of the terminal device in the inactive state is completed, that is, the sending of the RRC recovery request message.

In the power control method provided by the exemplary embodiment of the present disclosure, by receiving the RRC release message issued by the network device, and recording the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; When the device is in the inactive state, according to the uplink small data transmission configuration information in the inactive state, the first transmission power information and the first uplink channel state information, the second transmission power of the PUSCH for small data transmission is determined by a power control formula; And control the terminal equipment in the inactive state, and use the second transmission power to send uplink small data to the network equipment. The present disclosure can improve the small data transmission PUSCH uplink transmission success rate of the terminal equipment in the inactive state, thereby reducing the signaling overhead and power consumption of the uplink small data transmission of the terminal equipment in the inactive state.

In some embodiments, the method further includes: when the RRC recovery request message is successfully sent, receiving a feedback message from the network device and an updated value of the second closed-loop power control correction value.

In this example embodiment, when the inactive terminal device successfully performs the first uplink small data PUSCH transmission, the network device receives an RRC recovery request message sent by the inactive terminal device, and the RRC recovery request message may include the uplink data to be transmitted. The small data may also include the recovery reason, and may also include other information, which is not limited in this example. The network device may save the uplink small data to be transmitted in the RRC recovery request message.

In this exemplary embodiment, the network device may also dynamically adjust the second closed-loop power control correction value of the terminal device according to the current second uplink channel state information to obtain an updated value of the adjusted second closed-loop power control correction value. The updated value of the second closed-loop power control correction value and the feedback message ACK (Acknowledgement, positive acknowledgment) are sent to the terminal device.

The second transmit power is adjusted based on the update value of the second closed-loop power control correction value, where the update value of the second closed-loop power control correction value is determined by the network device according to the second uplink channel state information.

In this example embodiment, the updated value of the second closed-loop power control correction value may be delivered to the inactive terminal device through downlink control information DCI in a PDCCH (Physical downlink control channel, physical downlink control channel). After receiving the feedback message and downlink control information DCI from the network device, the inactive terminal dynamically adjusts the uplink transmit power of the subsequent small data packets according to the updated value of the second closed-loop power control correction value in the DCI.

In some embodiments, the method further includes: when the sending of the RRC recovery request message fails, adjusting the second closed-loop power control correction value by using the single maximum value of the power adjustment parameter to obtain retransmission power .

In this example embodiment, when the first uplink small data PUSCH transmission of the inactive terminal device fails, that is, the inactive terminal device does not receive a feedback message within the set period, the inactive terminal device needs to resend the RRC Recovery request message, in order to improve the transmission success rate, the terminal device in the inactive state can use the single adjustment maximum value of the cumulative adjustment value (the maximum value of the power adjustment parameter in Table 1, that is, 3dB) to control the second closed-loop power Correction value to adjust. For example, the adjusted second closed-loop power control correction value is equal to the second closed-loop power control correction value plus 3 dB.

In this example embodiment, the retransmission power may be determined according to the adjusted second closed-loop power control correction value and the power control formula. The PUSCH retransmission of uplink small data is performed using the retransmission power.

In this exemplary implementation, if the retransmission is successful, it is equivalent to the first successful transmission of uplink small data by the terminal device in the inactive state in the above embodiment, and subsequent reference may be made to the previous embodiment. If the retransmission fails, the power adjustment process in the above retransmission process may be repeated until the RRC recovery request message is successfully sent.

In the above embodiment, the adjustment mode of the transmission power after the first time the RCC recovery request message is successfully sent and after the transmission fails may be the same as when the RRC is sent for the first time.

In some embodiments, the method further includes: when the configuration authorization resource is valid, the terminal device in the inactive state sends an RRC recovery request message to the network device.

In this example embodiment, when the first timer has not timed out and/or the target synchronization signal block is higher than the first threshold, it may be considered that the configuration authorization resource is valid.

In some embodiments, the method further includes: when sending the RRC recovery request message to the network device, starting a second timer, where the second timer is used to indicate a retransmission period of the RRC recovery request message. The second timer may also monitor the RRC recovery process of the uplink small data to be transmitted.

In some embodiments, the method further includes: before the terminal device transitions from a connected state to an inactive state, the terminal device converts the mount configuration information, the first transmit power information, the first transmit power information, and the An association between the uplink channel state information and the inactive configuration grant resource and the synchronization signal block SSB is stored in the context of the inactive state, so as to facilitate the adjustment of the transmission power of the uplink small data by the terminal device in the inactive state.

In some embodiments, referring to FIG. 3 , in the power control method of a specific embodiment of the present disclosure, in the SA scenario of independent networking, the inactive terminal sends uplink small data based on the configured authorized resources, and the process of the first PUSCH transmission is successful . The method may include the following steps:

Step S310, the network device sends an RRC Release (RRC release message) to the terminal device.

In this example, the network device can first send a partial set of compensated open-loop power control parameters to the terminal through a system message, and the index is 1, which corresponds to the CG-based PUSCH power control; and then send the RRC release with the suspension configuration information to the terminal. message, ready to release the connected state terminal into the inactive state.

In this example, the RRC release message includes configuration grant information, the configuration grant information includes PUSCH configuration information, and the PUSCH configuration information includes PUSCH power control information.

Step S320, the terminal device enters the RRC inactive state.

In this example, after receiving the RRC release message with the suspension configuration sent by the network, the connected terminal records the current last PUSCH transmission power information, and applies the suspension configuration information of the RRC release message.

In this example, when the inactive terminal has uplink data to transmit, and all the data to be transmitted is mapped to the DRBs in the inactive uplink SDT DRB (Data Radio Bearer, data radio bearer) list, and the total data volume is less than the inactive state When the state data transmission threshold is exceeded, the inactive state terminal initiates the uplink SDT transmission process.

Step S330, the terminal device determines the second transmit power of the PUSCH for small data transmission by using a power control formula according to the RRC release message.

In this example, the various parameter values in the power control formula are determined by SSB measurements. The closed-loop power control correction value in the parameter value can be adjusted (eg increase or decrease by 1dB or 3dB) according to the current channel and the channel when the RRC release message is received.

Step S340, the terminal device controls to use the second transmit power to send an RRC Resume Request (RRC Resume Request message) to the network device.

Step S350, the network device successfully receives the RRC Resume Request and saves the uplink small data.

Step S360, the network device adjusts the closed-loop power control correction value according to the second uplink channel state information.

Step S370, the network device sends the feedback message ACK and the adjusted closed-loop power control correction value to the terminal device through the DCI of the PDCCH.

Step S380, the terminal device adjusts the subsequent small data PUSCH transmit power according to the received adjusted closed-loop power control correction value.

In some embodiments, referring to FIG. 4 , a power control method according to a specific embodiment of the present disclosure describes that in an independent networking SA scenario, a terminal in an inactive state sends an uplink small data packet based on the configured authorized resources, and the first PUSCH transmission fails. , and the process of retransmission is successful. The method may include the following steps.

Step S410, the network device sends an RRC Release (RRC release message) to the terminal device.

In step S420, the terminal device enters an inactive state.

Step S430, the terminal device determines, according to the RRC release message, the second transmit power of the PUSCH for small data transmission by using a power control formula.

Step S440, the terminal device controls to use the second transmit power to send an RRC Resume Request (RRC Resume Request message) to the network device.

Step S450, the network device does not receive the RRC Resume Request, that is, the first transmission of the terminal device fails.

Step S460, the terminal device adjusts the closed-loop power control correction value, and determines the retransmission power according to the adjusted closed-loop power control correction value.

Step S470, the terminal device sends an RRC Resume RequestRetransmission (RRC retransmission request information) to the network device by using the retransmission power.

Step S480, the network device receives the RRC Resume Request Retransmission, that is, the terminal device in the inactive state successfully sends small data for the first time, and saves the uplink data.

Step S490, the network device sends a feedback message ACK.

The specific processes of the above steps S480 to S490 are the same as the above steps S360 to S380, and are omitted here.

For the detailed introduction of each step in the above embodiments of FIG. 3 and FIG. 4 , reference may be made to the corresponding descriptions in the foregoing embodiments, which will not be repeated here.

The present disclosure determines the second transmit power for small data transmission according to the inactive uplink small data transmission configuration information, the first transmit power information and the first uplink channel state information, and can combine the inactive uplink small data transmission configuration information and The first transmit power and the first uplink channel state information when the RRC releases the message greatly improves the transmission success rate of the inactive terminal during the first PUSCH transmission, and solves the problem that the inactive terminal cannot transmit the PUSCH for the first time because it cannot Receiving the closed-loop power control parameters issued by the network fails to perform reasonable power control on the first uplink data transmission, resulting in higher signaling overhead and power consumption.

By adjusting and retransmitting the power of the terminal in the inactive state when the first PUSCH transmission fails, the present disclosure solves the problem that when the terminal in the inactive state fails to transmit the PUSCH data for the first time, the uplink transmission power cannot be reasonably adjusted during the retransmission. For the problem of dynamic adjustment, the failure probability of retransmitted uplink data transmission can be reduced through dynamic power adjustment control in the retransmission process.

The present disclosure ensures the success rate of small data uplink transmission of the inactive terminal by dynamically adjusting the power of the terminal in the inactive state after the first PUSCH transmission is successful, and avoids the problem of disconnection in the middle.

The present disclosure can implement reasonable power control for the first PUSCH transmission and retransmission for the terminal in the inactive state, reduce the failure probability of the first transmission and the retransmission, and improve the transmission efficiency of the uplink data in the inactive state.

Referring to FIG. 5 , this exemplary embodiment further provides a power control method, which is applied to a network device, and the method includes the following steps S510-S520.

Step S510, issue an RCC release message to the terminal equipment, so that the terminal equipment records the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; and after the terminal equipment enters the inactive state, according to The inactive uplink small data transmission configuration information, the first transmit power information, and the first uplink channel state information determine the second transmit power for small data transmission.

Step S520: Receive uplink small data sent by the terminal device in the inactive state using the second transmit power. Wherein, the RRC release message includes inactive state uplink small data transmission configuration information, and the inactive state uplink small data transmission configuration information is a configuration resource of inactive state uplink small data.

The specific details of the various steps involved in the power control method applied to the network device in the above embodiment have been described in detail in the power control method applied to the terminal device, and thus are not repeated here.

Referring to FIG. 6 , a terminal device 600 is also provided in this exemplary embodiment. The device 600 may include: a receiving module 610, a determining module 620, and a sending module 630; the receiving module 610 is configured to receive the radio resource control sent by the network device release message, and record the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; the radio resource control RRC release message includes the inactive state uplink small data transmission configuration information, the inactive state uplink The small data transmission configuration information is the configuration resource of the inactive state uplink small data; the determining module 620 is configured to, after the terminal device enters the RRC inactive state, according to the inactive state uplink small data transmission configuration information, the first transmission The power information and the first uplink channel state information are used to determine the second transmit power of the small data packet transmission through the power control formula; the sending module 630 is configured to control the terminal device in the inactive state to use the second transmit power The power sends uplink small data to the network device.

In an embodiment of the present disclosure, the receiving module 610 is further configured to receive a feedback message from a network device and an updated value of a second closed-loop power control correction value when the RRC recovery request message is successfully sent; the terminal device 600 further includes: a first adjustment module configured to adjust the second transmit power based on the updated value of the second closed-loop power control correction value, where the updated value of the second closed-loop power control correction value is based on the network device according to the updated value. The second uplink channel state information is determined.

In an embodiment of the present disclosure, the terminal device 600 further includes:

A second adjustment module, configured to adjust the second closed-loop power control correction value by using the single adjustment maximum value of the power adjustment parameter to obtain retransmission power when the RRC recovery request message fails to be sent.

A retransmission module, configured to perform PUSCH retransmission of uplink small data by using the retransmission power.

In an embodiment of the present disclosure, the inactive uplink small data transmission configuration information includes at least one of the following:

Inactive uplink small data transmission data radio bearer list, used to indicate the data radio bearer identifier configured for uplink small data transmission;

The configuration authorization information is used to indicate the configuration authorization resources of the uplink small data transmission configuration.

In an embodiment of the present disclosure, the configuration grant information includes PUSCH configuration information, and the PUSCH configuration information includes PUSCH time-frequency resource configuration information and PUSCH power control information.

In an embodiment of the present disclosure, the PUSCH time-frequency resource configuration information includes at least one of the following:

a first threshold, indicating a threshold for configuring the received power of the reference signal of the SSB authorized for uplink small data transmission;

The configuration of the bandwidth part is used to indicate the configuration of the bandwidth configuration authorized for uplink small data transmission.

In an embodiment of the present disclosure, the PUSCH power control information includes at least one of the following:

The transmit power control accumulation parameter of the terminal device, which is used to indicate the adjustment mode of the PUSCH transmit power control in the active state of the terminal device in the inactive state;

The power adjustment parameter of the terminal device, which is used to indicate the PUSCH transmission power adjustment value corresponding to the index value in the transmission power control command field of the terminal device in the inactive state;

The first closed-loop power control correction value is used to indicate the PUSCH transmit power adjustment value of the small data uplink transmission of the terminal device in the inactive state.

In an embodiment of the present disclosure, the device 600 may also be configured to determine at least one of the following based on the configuration information for the inactive uplink small data transmission:

The open-loop configuration parameter and the path loss compensation factor are used to indicate the PUSCH open-loop power compensation item of the small data uplink transmission of the terminal device in the inactive state.

Bandwidth, which is used to indicate the bandwidth information occupied by the PUSCH for uplink transmission of small data of the terminal device in the inactive state.

Path loss, used to indicate the small data uplink transmission PUSCH path loss information of the terminal device in the inactive state.

In an embodiment of the present disclosure, the power control information of the inactive uplink small data transmission is obtained through uplink scheduling-free resources delivered by the network device.

In an embodiment of the present disclosure, the receiving module 610 is further configured to receive the uplink channel measurement configuration information issued by the network device before the terminal device enters the inactive state; the sending module is further configured to periodically send the uplink channel sounding reference to the network device signal, so that the network device obtains and delivers the first uplink channel state information by measuring the uplink channel sounding reference signal.

In an embodiment of the present disclosure, the source/adjustment method of each parameter in the power control information includes at least one of the following: the bandwidth is a resource request message sent by the network device based on the network sent by the terminal device, according to the uplink of the terminal device. The buffer status report and the current network resources are determined and issued; the first closed-loop power control correction value adjusts the uplink transmit signal power through the transmission power control command carried in the downlink control information; the open-loop configuration parameters and path loss The set of compensation factors is obtained through system messages.

In an embodiment of the present disclosure, the transmission power control command includes a cumulative adjustment mode and an absolute adjustment mode, and the cumulative adjustment mode and the absolute adjustment mode are semi-statically switched through high-layer RRC signaling.

In an embodiment of the present disclosure, when the inactive uplink small data transmission configuration information includes an inactive uplink small data transmission data radio bearer list, the device 600 further includes:

The resource determination module determines each data radio bearer in the list of inactive uplink small data transmission data radio bearers as a small data transmission resource.

In an embodiment of the present disclosure, when the inactive uplink small data transmission configuration information includes configuration authorization information, the device 600 further includes: a first timing module, where the first timing module is configured to configure the configuration authorization resource to the medium access control entity, and start a first timer, where the first timer is used to indicate the valid time of the configuration authorization information.

In an embodiment of the present disclosure, the power adjustment parameter includes a cumulative adjustment value and an absolute adjustment value, and the device 600 further includes:

A cumulative adjustment module, configured to adjust the first closed-loop power control correction value by using the cumulative adjustment value when the transmission power control cumulative parameter indicates that the cumulative value adjustment mode is turned on.

An absolute adjustment module, configured to assign the absolute adjustment value to the first closed-loop power control correction value when the transmission power control accumulation parameter indicates that the accumulation value adjustment mode is turned off.

In an embodiment of the present disclosure, the receiving module 610 is further configured to receive the association relationship between the configuration authorization resource in the inactive state and the synchronization signal block SSB sent by the network device.

In one embodiment of the present disclosure, the device 600 further includes:

A measurement module, configured to perform SSB measurement, determine the path loss of the terminal equipment in the inactive state and the second channel state information in the inactive state; and based on the association relationship between the configuration authorization resources in the inactive state and the SSB , and select the target synchronization signal block that meets the small packet transmission threshold from the SSBs with the associated relationship.

An obtaining module, configured to obtain the open-loop configuration parameters and path loss compensation factors of the terminal equipment in the inactive state through system messages.

A bandwidth determination module, configured to determine the uplink bandwidth of the inactive terminal equipment in the bandwidth part configuration through the RRC release message.

In an embodiment of the present disclosure, the determining module may be further configured to: in response to the comparison result of the first channel state information and the second channel state information, adjust the first closed-loop power control correction value to obtain the second closed-loop power control correction value; according to the path loss of the inactive terminal device, the open-loop configuration parameter and path loss compensation factor of the inactive terminal device, the uplink bandwidth of the inactive terminal device, and the second closed-loop power control An adjustment value, and the second transmit power is determined by a power control formula.

In an embodiment of the present disclosure, the expression of the power control formula is:

P _PUSCH =min[P _max ,(P ₀ +10logM+αPL+f)]

Among them, P _PUSCH represents the PUSCH transmit power of the terminal device in the inactive state, P _max represents the maximum transmit power of the terminal device in the inactive state, P ₀ represents the open-loop configuration parameter of the terminal device in the inactive state, and M represents the Bandwidth occupied by PUSCH, α represents the path loss compensation factor of the inactive terminal device, PL represents the path loss of the inactive terminal device, f represents the second closed-loop power control adjustment value, and min represents the minimum value operation.

In an embodiment of the present disclosure, the sending module is configured to: determine whether the configuration authorization resource is valid; when the configuration authorization resource is valid, use the second transmit power to send an RRC recovery request message to the network device, the The RRC recovery request message includes uplink small data to be transmitted and/or recovery reasons.

In an embodiment of the present disclosure, the device 600 further includes a message determination module, which is configured to determine whether the RRC recovery request message is sent according to whether the terminal device receives a feedback message from a network device within a set period success.

In an embodiment of the present disclosure, the device 600 further includes a second timing module, where the second timing module is configured to start a second timer when sending an RRC recovery request message to the network device, where the second timer is used to indicate a non- The retransmission period of the RRC recovery request message of the active terminal equipment.

In an embodiment of the present disclosure, the device 600 further includes a saving module, which is used for the terminal device to store the mount configuration information, the first An association relationship between the transmit power information, the first channel state information, and the inactive configuration grant resource and the synchronization signal block SSB is stored in the context of the inactive state.

The specific details of each module/unit involved in the terminal device in the above-mentioned embodiments have been described in detail in the corresponding power control method, and thus are not repeated here.

Referring to FIG. 7 , this exemplary implementation further provides a network device 700 , including: a sending module 710 and a receiving module 720 . The sending module 710 is used to issue an RCC release message to the terminal equipment, so that the terminal equipment records the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; and when the terminal equipment enters an inactive state After that, according to the configuration information of the inactive uplink small data transmission, the first transmission power information and the first uplink channel state information, determine the second transmission power of the small data packet transmission; the receiving module 720 is used for receiving The uplink small data sent by the terminal device in the inactive state using the second transmit power; wherein the RRC release message includes the inactive state uplink small data transmission configuration information, and the inactive state uplink small data transmission configuration information is Configuration resources for inactive uplink small data.

The specific details of each module/unit involved in the network device in the foregoing embodiment have been described in detail in the corresponding power control method, and thus are not repeated here.

As another aspect, the present application also provides a computer-readable medium. The computer-readable medium may be included in the device described in the above embodiments, or may exist alone without being assembled into the device. The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by a device, the device enables the device to implement the methods in the following embodiments. For example, the device may implement the various steps shown in FIG. 2-FIG. 5 and so on.

It should be noted that the computer-readable medium shown in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the above two.

The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or a combination of any of the above.

More specific examples of computer readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable Programmable read only memory (EPROM or flash memory), fiber optics, portable compact disk read only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. In this disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present disclosure, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code therein. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device . Program code embodied on a computer readable medium may be transmitted using any suitable medium including, but not limited to, wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

In addition, in an exemplary embodiment of the present disclosure, a device capable of implementing the above method is also provided. As will be appreciated by one skilled in the art, various aspects of the present disclosure may be implemented as a system, method or program product. Therefore, various aspects of the present disclosure can be embodied in the following forms: a complete hardware embodiment, a complete software embodiment (including firmware, microcode, etc.), or a combination of hardware and software aspects, which may be collectively referred to herein as an embodiment "circuit", "module" or "system".

Referring to FIG. 8 , FIG. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 8 , the communication device 800 includes a processor 810 , a memory 820 , a transceiver 830 and a communication bus 840 . The processor 810 is connected to the memory 820 and the transceiver 830 , for example, the processor 810 may be connected to the memory 820 and the transceiver 830 through a communication bus 840 . The processor 810 is configured to support the network device to perform corresponding functions in the power control methods in FIGS. 2-5 . The processor 810 may be a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), a hardware chip or any combination thereof. The above-mentioned hardware chip may be an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), a programmable logic device (Programmable Logic Device, PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (Complex Programmable Logic Device, CPLD), a Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), a Generic Array Logic (Generic Array Logic, GAL) or any combination thereof. The memory 820 is used to store program codes and the like. The memory 820 may include a volatile memory (Volatile Memory, VM), such as a random access memory (Random Access Memory, RAM); the memory 820 may also include a non-volatile memory (Non-Volatile Memory, NVM), such as a read-only memory ( Read-Only Memory, ROM), flash memory (flash memory), hard disk (Hard Disk Drive, HDD) or solid-state drive (Solid-State Drive, SSD); the memory 820 may also include a combination of the above types of memory.

The transceiver 830 is used to receive or transmit data.

The processor 810 may invoke the above program code to perform the following operations:

Receive the radio resource control RRC release message issued by the network device, and record the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; the RRC release message includes the inactive state uplink small data transmission configuration information , the inactive state uplink small data transmission configuration information is the configuration resource of uplink small data sent to the terminal device when the terminal device transitions from the connected state to the inactive state.

After the terminal device enters the inactive state, the second transmission power for small data transmission is determined according to the uplink small data transmission configuration information in the inactive state, the first transmission power information and the first uplink channel state information .

The terminal device in the inactive state is controlled, and the second transmission power is used to send uplink small data to the network device.

The processor 810 may call the above program codes to perform corresponding operations of the above power control method, which will not be repeated here.

It should be noted that, the implementation of each operation may also correspond to the corresponding descriptions of the method embodiments shown in FIG. 2 to FIG. 5 ; the above-mentioned processor 810 may also cooperate with the transceiver 830 to perform other operations in the above-mentioned method embodiments.

Embodiments of the present disclosure also provide a system chip, which includes: a processing unit and a communication unit, where the processing unit may be, for example, a processor, and the communication unit may be, for example, an input/output interface, a pin, or a circuit. The processing unit can execute computer instructions, so that the chip in the network communication device executes any of the power control methods provided by the foregoing embodiments of the present disclosure.

Optionally, the computer instructions are stored in a storage unit.

Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit can also be a storage unit in the terminal located outside the chip, such as a read-only memory (read-only memory, ROM). ) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc. Wherein, the processor mentioned in any one of the above may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of a program of the above-mentioned power control method. The processing unit and the storage unit can be decoupled, respectively disposed on different physical devices, and connected in a wired or wireless manner to implement the respective functions of the processing unit and the storage unit, so as to support the system chip to implement the above embodiments various functions in . Alternatively, the processing unit and the memory may also be coupled on the same device.

From the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein may be implemented by software, or may be implemented by software combined with necessary hardware. Therefore, the technical solutions according to the embodiments of the present disclosure may be embodied in the form of software products, and the software products may be stored in a non-volatile storage medium (which may be CD-ROM, U disk, mobile hard disk, etc.) or on a network , including several instructions to cause a device to perform a method according to an embodiment of the present disclosure.

In addition, the above-mentioned figures are merely schematic illustrations of the processes included in the methods according to the exemplary embodiments of the present disclosure, and are not intended to be limiting. It is easy to understand that the processes shown in the above figures do not indicate or limit the chronological order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, in multiple modules.

It should be noted that although the various steps of the methods of the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order, or that all illustrated steps must be performed in order to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step for execution, and/or one step may be decomposed into multiple steps for execution, etc., all of which should be considered as part of the present disclosure.

It will be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident in the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for carrying out the disclosure, and will enable any person skilled in the art to utilize the disclosure.

Claims (32)

1. A power control method, applied to a terminal device, wherein the method comprises: Receive the radio resource control RRC release message issued by the network device, and record the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; the RRC release message includes the inactive state uplink small data transmission configuration information , the inactive state uplink small data transmission configuration information is the configuration resource of inactive state uplink small data; After the terminal device enters the inactive state, the second transmission power for small data transmission is determined according to the uplink small data transmission configuration information in the inactive state, the first transmission power information and the first uplink channel state information ; The terminal device in the inactive state is controlled, and the second transmission power is used to send uplink small data to the network device. 2. The power control method according to claim 1, wherein the inactive uplink small data transmission configuration information comprises at least one of the following: Inactive uplink small data transmission data radio bearer list, used to indicate the data radio bearer identifier configured for uplink small data transmission; The configuration authorization information is used to indicate the configuration authorization resources of the uplink small data transmission configuration. 3 . The power control method according to claim 2 , wherein the configuration grant information includes PUSCH configuration information, and the PUSCH configuration information includes PUSCH time-frequency resource configuration information and PUSCH power control information. 4 . 4. The power control method according to claim 3, wherein the PUSCH time-frequency resource configuration information comprises at least one of the following: a first threshold, indicating a threshold for configuring the received power of the reference signal of the SSB authorized for uplink small data transmission; The configuration of the bandwidth part is used to indicate the configuration of the bandwidth configuration authorized for uplink small data transmission. 5. The power control method according to claim 3, wherein the PUSCH power control information comprises at least one of the following: The transmit power control accumulation parameter of the terminal device, which is used to indicate the adjustment mode of the PUSCH transmit power control in the active state of the terminal device in the inactive state; The power adjustment parameter of the terminal device, which is used to indicate the PUSCH transmission power adjustment value corresponding to the index value in the transmission power control command field of the terminal device in the inactive state; The first closed-loop power control correction value is used to indicate the PUSCH transmit power adjustment value of the small data uplink transmission of the terminal device in the inactive state. 6 . The power control method according to claim 1 , wherein the power control information of the inactive uplink small data transmission is obtained through uplink scheduling-free resources delivered by a network device. 7 . 7. The power control method according to claim 5, wherein the method further comprises: Based on the inactive uplink small data transmission configuration information, determine at least one of the following: Open-loop configuration parameters and path loss compensation factors, which are used to indicate the PUSCH open-loop power compensation term for small data uplink transmission of inactive terminal equipment; Bandwidth, used to indicate the bandwidth information occupied by the PUSCH for small data uplink transmission of the terminal device in the inactive state; Path loss, used to indicate the small data uplink transmission PUSCH path loss information of the terminal device in the inactive state. 8. The power control method according to claim 1, wherein the method further comprises: Before the terminal device enters the inactive state, receive the uplink channel measurement configuration information issued by the network device; The uplink channel sounding reference signal is periodically sent to the network device, so that the network device acquires and delivers the first uplink channel state information by measuring the uplink channel sounding reference signal. 9. The power control method according to claim 5, wherein the source/adjustment approach of each parameter in the power control information comprises at least one of the following: The bandwidth is determined and delivered by the network device based on the network sending resource request message sent by the terminal device, according to the uplink buffer status report of the terminal device and the current network resources; The first closed-loop power control correction value adjusts the uplink transmit signal power through the transmission power control command carried in the downlink control information; The set of open-loop configuration parameters and path loss compensation factors are obtained through system messages. 10 . The power control method according to claim 9 , wherein the transmission power control command includes an accumulative adjustment mode and an absolute adjustment mode, and the accumulative adjustment mode and the absolute adjustment mode are semi-transmitted by high-layer RRC signaling. 11 . static switch. 11. The power control method according to claim 4, wherein when the inactive uplink small data transmission configuration information includes configuration authorization information, the method further comprises: The configuration authorization resource is configured to the medium access control entity, and a first timer is started, where the first timer is used to indicate the valid time of the configuration authorization information. 12. The power control method according to claim 4, wherein when the inactive uplink small data transmission configuration information comprises an inactive uplink small data transmission data radio bearer list, the method further comprises: It is determined that each data radio bearer in the inactive uplink small data transmission data radio bearer list is a small data transmission resource. 13. The power control method according to claim 5, wherein the power adjustment parameter includes a cumulative adjustment value and an absolute adjustment value, and the method further comprises: When the transmit power control accumulation parameter indicates that the accumulation value adjustment mode is turned on, adjusting the first closed-loop power control correction value by using the accumulation adjustment value; When the transmit power control accumulation parameter indicates that the accumulation value adjustment mode is turned off, the absolute adjustment value is assigned to the first closed-loop power control correction value. 14. The power control method according to claim 5, wherein the method further comprises: The association relationship between the inactive configuration authorization resource and the synchronization signal block SSB sent by the network device is received. 15. The power control method according to claim 14, wherein the method further comprises: The inactive terminal equipment performs SSB measurement to determine the path loss of the inactive terminal equipment and the second uplink channel state information in the inactive state; and based on the association relationship between the configuration authorization resources in the inactive state and the SSB, Select the target synchronization signal block that meets the small packet transmission threshold from the SSBs with the associated relationship; Obtain open-loop configuration parameters and path loss compensation factors of inactive terminal equipment through system messages; Through the RRC release message, the uplink bandwidth of the terminal equipment in the inactive state is determined in the bandwidth part configuration. 16 . The power control method according to claim 15 , wherein the determining according to the inactive uplink small data transmission configuration information, the first transmit power information and the first uplink channel state information The second transmit power for small data transmission, including: In response to the comparison result of the first uplink channel state information and the second uplink channel state information, adjusting the first closed-loop power control correction value to obtain a second closed-loop power control correction value; According to the path loss of the inactive terminal device, the open-loop configuration parameter and path loss compensation factor of the inactive terminal device, the uplink bandwidth of the inactive terminal device, and the second closed-loop power control adjustment value , and the second transmit power is determined through a power control formula. 17. The power control method according to claim 15, wherein the expression of the power control formula is: P _PUSCH =min[P _max ,(P ₀ +10log M+αPL+f)] Among them, P _PUSCH represents the PUSCH transmit power of the terminal device in the inactive state, P _max represents the maximum transmit power of the terminal device in the inactive state, P ₀ represents the open-loop configuration parameter of the terminal device in the inactive state, and M represents the Bandwidth occupied by PUSCH, α represents the path loss compensation factor of the inactive terminal device, PL represents the path loss of the inactive terminal device, f represents the second closed-loop power control adjustment value, and min represents the minimum value operation. 18 . The power control method according to claim 2 , wherein the sending small uplink data to the network device by using the second transmit power comprises: 18 . Determine whether the configuration authorization resource is valid; When the configured authorized resource is valid, the second transmit power is used to send an RRC recovery request message to the network device, where the RRC recovery request message includes uplink small data to be transmitted and/or a recovery reason. 19. The power control method according to claim 18, wherein the method further comprises: When the RRC recovery request message is successfully sent, receiving the feedback message of the network device and the updated value of the second closed-loop power control correction value; The second transmit power is adjusted based on the update value of the second closed-loop power control correction value, where the update value of the second closed-loop power control correction value is determined by the network device according to the second uplink channel state information. 20 . The power control method according to claim 19 , wherein the updated value of the second closed-loop power control correction value is delivered to the terminal equipment through downlink control information in a physical downlink control channel PDCCH. 21 . 21. The power control method according to claim 18, wherein the method further comprises: When the sending of the RRC recovery request message fails, the second closed-loop power control correction value is adjusted by using the single adjustment maximum value of the power adjustment parameter to obtain retransmission power; The PUSCH retransmission of uplink small data is performed using the retransmission power. 22. The power control method according to claim 19 or 21, wherein the method further comprises: Whether the RRC recovery request message is sent successfully is determined according to whether the terminal device receives a feedback message from the network device within a set period. 23. The power control method according to claim 11, wherein the determining whether the configuration authorization resource is valid comprises at least one of the following: the first timer has not timed out; The target synchronization signal block is above the first threshold. 24. The power control method according to claim 18, wherein the method further comprises: When sending the RRC recovery request message to the network device, a second timer is started, where the second timer is used to indicate the retransmission period of the RRC recovery request message of the inactive terminal device. 25. The power control method according to claim 14, wherein the method further comprises: Before the terminal device transitions from the connected state to the inactive state, the terminal device stores the mounting configuration information, the first transmit power information, the first uplink channel state information, and the inactive configuration authorization resource The association with the synchronization signal block SSB is kept in the context of the inactive state. 26. A power control method, applied to a network device, characterized in that the method comprises: Issue the RCC release message to the terminal equipment, so that the terminal equipment records the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; and after the terminal equipment enters the inactive state, according to the non-active state the configuration information of the active uplink small data transmission, the first transmission power information and the first uplink channel state information, to determine the second transmission power of the small data transmission; receiving uplink small data sent by the terminal device in the inactive state using the second transmit power; Wherein, the RRC release message includes inactive state uplink small data transmission configuration information, and the inactive state uplink small data transmission configuration information is a configuration resource of inactive state uplink small data. 27. A terminal device, characterized in that the terminal device comprises: a receiving module, configured to receive the radio resource control release message issued by the network device, and record the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; the radio resource control RRC release message includes inactive configuration information for uplink small data transmission in the inactive state, where the configuration information for uplink small data transmission in the inactive state is a configuration resource for uplink small data in the inactive state; A determination module, configured to determine through a power control formula according to the uplink small data transmission configuration information in the inactive state, the first transmit power information and the first uplink channel state information after the terminal device enters the RRC inactive state the second transmit power for small data packet transmission; A sending module, configured to control the terminal device in an inactive state to send uplink small data to the network device by using the second transmit power. 28. The terminal device according to claim 27, wherein the receiving module is further configured to: when the RRC recovery request message is successfully sent, receive a feedback message from the network device and an update of the second closed-loop power control correction value value; The terminal equipment also includes: A first adjustment module, configured to adjust the second transmit power based on the update value of the second closed-loop power control correction value, where the update value of the second closed-loop power control correction value is the network device according to the second uplink Channel state information is determined. 29. The terminal device according to claim 27 or 28, wherein the terminal device further comprises: a second adjustment module, configured to adjust the second closed-loop power control correction value by using the single adjustment maximum value of the power adjustment parameter to obtain retransmission power when the RRC recovery request message fails to be sent; A retransmission module, configured to perform PUSCH retransmission of uplink small data by using the retransmission power. 30. A network device, comprising: The sending module is used to issue the RCC release message to the terminal equipment, so that the terminal equipment records the first transmit power information and the first uplink channel state information of the current physical uplink shared channel PUSCH; and after the terminal equipment enters the inactive state , according to the inactive state uplink small data transmission configuration information, the first transmission power information and the first uplink channel state information, determine the second transmission power of small data packet transmission; a receiving module, configured to receive uplink small data sent by the terminal device in the inactive state using the second transmit power; Wherein, the RRC release message includes inactive state uplink small data transmission configuration information, and the inactive state uplink small data transmission configuration information is a configuration resource of inactive state uplink small data. 31. A network device, comprising: at least one processor; A communication interface, the communication interface is used for the communication device to exchange information with other communication devices, and when the program instructions are executed in the at least one processor, the method according to any one of claims 1-25 is implemented . 32. A computer-readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the method of any one of claims 1-25 is implemented.

Images