CN115150928A

CN115150928A - Power control method and related equipment

Info

Publication number: CN115150928A
Application number: CN202210774972.0A
Authority: CN
Inventors: 李阳; 刘悦; 陈宏�; 程增辉; 齐浩
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-10-04

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 communications technologies, and in particular, to a power control method and a related device.

Background

5G (5 th Generation Mobile Communication Technology, fifth Generation Mobile Communication Technology) is a next Generation wireless network Communication Technology, and has features of supporting ultra wide band, large connection, and the like. For the 5G technology, in order to reduce signaling overhead caused by the mobility procedure and the state transition procedure, the network configures the ue with infrequent data transmission as an RRC (Radio Resource Control) inactive state.

In the related art, a terminal in an inactive state may support Small Data Transmission (SDT), and the SDT is performed mainly through a random access procedure or a non-scheduled configuration authorized resource. However, for the inactive uplink SDT, the failure rate of uplink SDT transmission is high due to the inability to perform reasonable power control on the uplink SDT, which further causes high signaling overhead and power consumption.

It is to 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 thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the embodiments of the present disclosure is to provide a power control method and apparatus, a storage medium, and a network device, so as to solve, to a certain extent, the problems of large signaling overhead and large power consumption in the process of performing uplink small data transmission by an inactive terminal device in the related art.

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

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); the RRC release message comprises inactive uplink small data transmission configuration information, wherein the inactive uplink small data transmission configuration information is a configuration resource of uplink small data sent to the terminal equipment when the terminal equipment is switched from a connection state to an inactive state; when the terminal equipment is in an inactive state, the terminal equipment determines second transmitting power of small data transmission according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information; and controlling the terminal equipment in the non-activated state, and sending uplink small data to the network equipment by adopting the second transmitting power.

Optionally, the method further comprises: when the RRC recovery request message is successfully sent, receiving a feedback message of the network equipment and an updated value of a second closed-loop power control correction value; and adjusting the second transmitting power based on the updated value of the second closed-loop power control correction value, wherein the updated value of the second closed-loop power control correction value is determined by the network equipment according to the second uplink channel state information.

Optionally, the method further comprises: when the RRC recovery request message fails to be sent, adjusting the second closed-loop power control correction value by adopting the single adjustment maximum value of the power adjustment parameter so as to obtain retransmission power; and carrying out PUSCH retransmission of the uplink small data by adopting the retransmission power.

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

According to a second aspect of the present disclosure, there is provided a power control method applied to a network device, the method including: sending an RCC release message to terminal equipment so that the terminal equipment records 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 inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information; receiving uplink small data sent by the terminal equipment in the non-activated state by adopting the second transmitting power; the RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of the inactive uplink small data.

According to a third aspect of the present disclosure, there is provided a terminal device, including: the device comprises a receiving module, a determining module and a sending module; the receiving module is used for receiving a radio resource control release message sent by network equipment and recording first transmission power information and first uplink channel state information of a current Physical Uplink Shared Channel (PUSCH); the radio resource control RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of inactive uplink small data; a determining module, configured to determine, 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, a second transmit power for small data packet transmission through a power control formula after a terminal device enters an RRC inactive state; and the sending module is used for controlling the terminal equipment in the inactive state and sending the uplink small data to the network equipment by adopting the second transmitting power.

Optionally, the receiving module is further configured to receive a feedback message of 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 adjusting 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 determined by the network device according to the second uplink channel state information.

Optionally, the terminal device further includes: a second adjusting module and a retransmission module; a second adjusting module, configured to adjust the second closed-loop power control correction value by using a single maximum adjustment value of the power adjustment parameter when the RRC recovery request message fails to be sent, so as to obtain a retransmission power; and the retransmission module is used for carrying out PUSCH retransmission of the uplink small data by adopting the retransmission power.

According to a fourth aspect of the present disclosure, there is provided a network device comprising: the terminal equipment comprises a sending module and a receiving module, wherein the sending module is used for sending an RCC release message to the terminal equipment so as to enable the terminal equipment to record first transmitting 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 for transmitting small data packets according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information; a receiving module, configured to receive uplink small data sent by the terminal device in the inactive state by using the second transmit power; the RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of the inactive uplink small data.

According to a fifth aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any one of the above.

According to a sixth aspect of the present disclosure, there is provided a communication apparatus comprising: at least one processor and a communication interface; a communication interface for the communication device to interact with other communication devices, the program instructions when executed in the at least one processor implementing the method of any one of the above.

According to a seventh aspect of the present disclosure, a communication system is provided, which includes the terminal device and the network device 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 present disclosure, by receiving an RRC release message issued by a network device, first transmit power information and first uplink channel state information of a current physical uplink shared channel PUSCH are recorded; when the terminal equipment is in an inactive state, determining PUSCH second transmitting power for small data transmission according to inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state 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 improve the uplink transmission success rate of the small data transmission PUSCH of the terminal equipment in the inactive state, and further reduce 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 both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

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

Fig. 2 schematically shows one of the flow diagrams of a power control method according to one embodiment of the present disclosure.

Fig. 3 schematically shows a second flow diagram of a power control method according to an embodiment of the present disclosure.

Fig. 4 schematically shows a third flow diagram of a power control method according to an embodiment of the present disclosure.

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

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

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

Figure 8 schematically illustrates an example communication device block diagram, according to one embodiment of this disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different 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 to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known technical 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 repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of 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, a communication system architecture diagram of a power control method provided in some embodiments of the present disclosure is shown. 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, such as a mobile phone, on the user side for receiving or transmitting signals. The Terminal device may also be referred to as a Terminal device (Terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like. The terminal device may be a vehicle having a communication function, a Smart vehicle, a mobile phone (mobile phone), a wearable device, a tablet (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving (self-driving), a wireless terminal device in remote surgery (remote surgery), a wireless terminal device in Smart Grid, a wireless terminal device in Transportation Safety (Transportation Safety), a wireless terminal device in Smart City (Smart City), a wireless terminal device in Smart Home (Smart Home), and the like. The embodiments of the present disclosure do not limit the specific technology and the specific device form adopted by the terminal device.

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

It should be noted that the technical solution of the embodiment of the present disclosure may be applied to a New Radio (NR) system of a fifth generation mobile communication system 5G or 5G, or another future new mobile communication system.

It should be understood that the number of terminal devices and network devices in fig. 1 is merely illustrative. There may be any number of terminal devices and network devices, depending on the implementation. The present example does not specifically limit the number of terminal devices and network devices.

It is to be understood that the system architecture described in the embodiment of the present disclosure is for more clearly illustrating the technical solutions of the embodiment of the present disclosure, and does not constitute a limitation to the technical solutions provided in the embodiment of the present disclosure, and as a person having ordinary skill in the art knows that along with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiment of the present disclosure are also applicable to similar technical problems.

The 5G network brings a higher challenge to the 5G terminal power consumption while bringing ultra-high-rate and ultra-low-delay service experience to the user. In order to reduce the power consumption caused by the inactive mode terminal having to switch to the connected mode for uplink data transmission, 3GPP (3 rd Generation Partnership Project) proposes an inactive mode terminal uplink data transmission mechanism.

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

However, in the uplink PUSCH transmission process of the inactive state terminal, the inactive state terminal cannot receive the closed loop power control parameter issued by the network during the first PUSCH transmission, the closed loop control parameter needs to be determined by the network through an SRS (Sounding Reference Signal) or other uplink data sent by the measurement terminal, and the inactive state terminal cannot 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 state terminal cannot obtain the closed loop control parameter issued by the network, and the failure rate of the first uplink data transmission is high, thereby resulting in high signaling overhead and power consumption.

In order to further reduce signaling overhead and power consumption of uplink small data transmission of an inactive terminal, the present disclosure proposes a power control method for uplink small data transmission of an inactive terminal, and with reference to fig. 2, the power control method includes the following steps S210 to S230.

Step S210, receiving a radio resource control RRC release message issued by a network device, and recording first transmit power information and first uplink channel state information of a current physical uplink shared channel PUSCH.

In this example embodiment, when the network device is ready to release the connected terminal into the inactive state, the network device sends an RRC release message with suspended configuration to the terminal; the RRC release message may include inactive uplink small data transmission configuration information, where the inactive uplink small data transmission configuration information is a configuration resource of uplink small data sent by the inactive terminal device. The power control information of the inactive uplink small data transmission can be obtained through an uplink scheduling-free resource (configuration authorization Type 1) issued by the network device.

In this example embodiment, the inactive state uplink small data transmission configuration information may include an inactive state uplink small data transmission data radio bearer list for indicating the data radio bearer identifier configured for uplink small data transmission. The inactive uplink small data transmission configuration information may further include configuration authorization information for indicating a configuration authorization resource of the uplink small data transmission configuration.

In this example embodiment, the configuration authorization 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 a threshold for configuring reference Signal received power of an SSB (Synchronization Signal and PBCH block) authorizing uplink small data transmission; the Bandwidth Part configuration is configured to indicate to configure a Bandwidth configuration authorizing uplink small data transmission, and for example, the Bandwidth Part configuration may include a configuration for configuring PUSCH resources applicable to a specific UE Bandwidth Part (BWP), such as a time domain resource list, a frequency domain resource list, a radio resource block size, and the like 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 transmission power control accumulation parameter of the terminal equipment is used for indicating the adjustment mode of the PUSCH transmission power control of the terminal equipment in the activated state; the power adjustment parameter of the terminal equipment is used for indicating a PUSCH (physical uplink shared channel) transmission power adjustment value corresponding to the index value in the transmission power control command domain of the terminal equipment in the non-activated state; and the first closed loop power control correction value is used for indicating a PUSCH (physical uplink shared channel) transmission power adjustment value of small data uplink transmission of the terminal equipment in the inactive state. Other information related to PUSCH power control may also be included, which is not limited in this example.

In order to improve the transmission efficiency of the small data packets of the terminal in the inactive state, the network issues the small data transmission resources in the inactive state based on the configuration authorization in the RRC release message, and the terminal in the inactive state can determine the open-loop configuration parameter P0, the path loss compensation factor α, the bandwidth M, and the path loss PL based on the configuration issued by the network. The open loop configuration parameters and the path loss compensation factors are used for indicating small data uplink transmission PUSCH open loop power compensation items of the terminal equipment in the inactive state; the bandwidth is used for indicating bandwidth information occupied by small data uplink transmission PUSCH of the terminal equipment in the inactive state; and the path loss is used for indicating the small data uplink transmission PUSCH path loss information of the terminal equipment 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 a media access control entity, and a first timer is started, where the first timer is used to indicate an effective time for configuring the authorization information.

Illustratively, the Transmit Power Control Accumulation parameter may be a terminal Equipment (UE) specific parameter TPC-Accumulation (Transmit Power Control-Accumulation). The accumulated adjustment value may be a UE-specific parameter δ _PUSCH ；δ _PUSCH Corresponding to the index value in the TPC command field. E.g. delta _PUSCH May be included in a Downlink Control Information (DCI) format 0 _0or DCI format 0 _1; or delta _PUSCH May also be included in DCI format 2 \u3 (may be jointly encoded with other TPC command fields), δ _PUSCH The values of (c) can be referred to 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 a first PUSCH transmission for a terminal in an inactive state. The current PUSCH power control adjustment state may be determined from the transmit power control accumulation parameter, the power adjustment parameter, and the first closed loop power control correction value.

The power adjustment parameter may include a cumulative adjustment value and an absolute adjustment value. When the TPC-Accumulation mode is enabled, the first closed-loop power control correction value may be adjusted using an accumulated adjustment value. Exemplarily, f (i, l) = f (i-i) ₀ ,l)+δ _PUSCH Wherein f (i, l) represents the accumulated 1 st value at the i-th time, i.e. the adjusted first closed loop power control correction value, f (i-i) ₀ L) represents the i-i ₀ The 1 st value accumulated at the time, i.e. the adjusted first closed loop power control correction value, i ₀ Indicating an initial time, δ _PUSCH Indicating the cumulative adjustment value.

And when the TPC-Accumulation mode is not started, assigning the absolute adjusting value to the first closed-loop power control correction value to adjust the current first closed-loop power control correction value. Delta _PUSCH Can be obtained by notification of Downlink Control Information (DCI) format 0 _0or DCI format 0 _1or DCI format 2 _3.

In this exemplary embodiment, the process of acquiring the first uplink channel state information is as follows: before the terminal equipment enters an inactive state (a connected state), receiving uplink channel measurement configuration information sent by network equipment; and periodically sending an uplink channel Sounding Reference Signal (SRS) to the network device, so that the network device obtains and sends the first uplink channel state information by measuring the uplink channel Sounding Reference Signal. The bandwidth obtaining process comprises the following steps: the network equipment sends a resource request message based on a network sent by the terminal equipment, and determines and issues an uplink transmission bandwidth according to an uplink cache state report of the terminal equipment and the current network resource; the first closed loop power control correction value adjusts the power of an uplink transmitting signal through a transmission power control command carried in downlink control information; and the open-loop configuration parameters and the path loss compensation factor set are acquired through system messages.

In some embodiments, the method further comprises: and receiving the association relation between the inactive configuration authorization resource and the synchronization signal block SSB sent by the network equipment.

Step S220, after the terminal device enters the inactive state, determining a second transmitting power for small data transmission according to the inactive state uplink small data transmission configuration information, the first transmitting power information, and the first uplink channel state information.

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

firstly, SSB measurement can be carried out, and the path loss of terminal equipment in an inactive state and second uplink channel state information in the inactive state are determined; and based on the association relation between the configuration authorized resources in the inactive state and the SSBs, selecting a target synchronization signal block which meets the transmission threshold of the small data packet from the SSBs with the association relation.

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

And secondly, acquiring open-loop configuration parameters and path loss compensation factors of the terminal equipment in the non-activated state through system information.

And thirdly, determining the uplink bandwidth of the terminal equipment in the non-activated state in the bandwidth part configuration through the RRC release message.

And fourthly, adjusting the first closed-loop power control correction value in response to the comparison result of the first uplink channel state information and the second uplink channel state information to obtain a second closed-loop power control correction value.

In this exemplary embodiment, the current second uplink channel state information and the first uplink channel state information when the RRC release message is received may be compared and analyzed by the measurement SSB, and then, in combination with the first PUSCH transmission power information recorded when the RRC release message is received, the first closed-loop power control correction value f is appropriately adjusted, so as to improve the transmission success rate of the first PUSCH transmission.

Illustratively, 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 properly reduced; the adjusted first power control correction value is the second power control correction value.

In the process of determining the second Transmission Power, the terminal device may adjust the uplink Transmission signal Power through a TPC (Transmission Power Control) command carried in Downlink Control Information (DCI), and the Power adjustment mode may be divided into an accumulation adjustment mode and an absolute adjustment mode through a closed-loop Power Control TPC command. The accumulative adjustment mode is to carry out accumulative summation according to an adjustment value corresponding to the TPC command on the basis of the original transmission power for the next transmission of uplink signals. And the absolute adjustment mode directly uses the power value corresponding to the TPC command for the next transmission of the uplink signal. The cumulative adjustment mode is applicable to PUSCH, PUCCH (Physical Uplink Control Channel) and SRS, and the absolute adjustment mode is applicable only to PUSCH. The accumulative adjustment and the absolute value adjustment are switched semi-statically through high-layer RRC signaling.

And fifthly, determining the second transmitting power through a power control formula according to the path loss of the terminal equipment in the non-activated state, the open-loop configuration parameters and the path loss compensation factors of the terminal equipment in the non-activated state, the uplink bandwidth of the terminal equipment in the non-activated state and the second closed-loop power control adjustment value.

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

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

wherein, P _PUSCH Indicating PUSCH transmission power, P, of inactive terminal equipment _max Indicating the maximum transmission power, P, of the terminal equipment in the inactive state ₀ Representing the open loop configuration parameters of the terminal equipment in the inactive state, and M representing the PUSCH occupation of the terminal equipment in the inactive stateThe bandwidth is used, alpha represents the path loss compensation factor of the terminal equipment in the inactive state, PL represents the path loss of the terminal equipment in the inactive state, f represents a second closed loop power control adjustment value, and min represents a minimum value operation.

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

In the current network log, no MCS of delta is configured on the network side to the terminal, and at this time, delta in the original power control formula is 0, and delta is the power offset determined by the MCS level, so that the term is omitted in the formula of the present disclosure.

Step S230, controlling the terminal device in the inactive state, and sending the uplink small data to the network device by using the second transmitting power.

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

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

In the power control method provided by the present disclosure, by receiving an RRC release message issued by a network device, first transmit power information and first uplink channel state information of a current physical uplink shared channel PUSCH are recorded; when the terminal equipment is in an inactive state, determining a PUSCH second transmitting power for small data transmission through a power control formula according to inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information; and controlling the terminal equipment in the inactive state, and sending the uplink small data to the network equipment by adopting the second transmitting power. The method and the device can improve the uplink transmission success rate of the small data transmission PUSCH of the terminal equipment in the inactive state, and further reduce 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 comprises: and when the RRC recovery request message is successfully sent, receiving a feedback message of the network equipment 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, where the RRC recovery request message may include uplink small data to be transmitted, may also include a recovery reason, and may also include other information, which is not limited in this example. The network device may store the uplink small data to be transmitted in the RRC recovery request message.

In this exemplary embodiment, the network device may further 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. And sending the updated value of the second closed loop power control correction value and a feedback message ACK (Acknowledgement) to the terminal equipment.

And adjusting the second transmitting power based on the updated value of the second closed-loop power control correction value, wherein the updated value of the second closed-loop power control correction value is determined by the network equipment according to the second uplink channel state information.

In this exemplary embodiment, the updated value of the second closed loop power control correction value may be issued to the terminal device in the inactive state through downlink control information DCI in a PDCCH (Physical downlink control channel). And after receiving the feedback message and the downlink control information DCI of the network equipment, the non-active state terminal dynamically adjusts the uplink transmitting power of the subsequent small data packet according to the update value of the second closed-loop power control correction value in the DCI.

In some embodiments, the method further comprises: and when the RRC recovery request message fails to be sent, adjusting the second closed-loop power control correction value by adopting the single adjustment maximum value of the power adjustment parameter so as to obtain retransmission power.

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

In this exemplary embodiment, the retransmission power may be determined according to the adjusted second closed loop power control correction value and the power control formula. And performing PUSCH retransmission of the uplink small data by adopting the retransmission power.

In this exemplary embodiment, if the retransmission is successful, the terminal device in the inactive state corresponding to the above embodiment successfully transmits the uplink small data for the first time, and reference may be made to the previous embodiment. If the retransmission fails, the power adjustment procedure in the retransmission procedure may be repeated until the RRC recovery request message is successfully sent.

In the above-described embodiments of the present invention, the transmission power after the transmission success and the transmission failure of the first RCC recovery request message may be adjusted in the same manner as when the RRC is transmitted for the first time.

In some embodiments, the method further comprises: and when the configuration authorization resource is effective, the terminal equipment in the inactive state sends an RRC recovery request message to the network equipment.

In this example embodiment, the configuration grant resource may be considered valid when the first timer has not expired and/or the target synchronization signal block is above a first threshold.

In some embodiments, the method further comprises: and when the RRC recovery request message is sent to the network equipment, starting a second timer, wherein the second timer is used for indicating the retransmission cycle of the RRC recovery request message. The second timer can also monitor an uplink small data RRC recovery process to be transmitted.

In some embodiments, the method further comprises: before the terminal device is converted from the connection state to the non-activation state, the terminal device saves the mounting configuration information, the first transmission power information, the first uplink channel state information, the non-activation configuration authorization resource and the association relationship between the synchronization signal blocks SSB in the context of the non-activation state, so that the transmission power of the non-activation state terminal device to the uplink small data can be adjusted conveniently.

In some embodiments, referring to fig. 3, in a power control method according to a specific embodiment of the present disclosure, in an independent networking SA scenario, an inactive terminal sends uplink small data based on a configuration authorization resource, and a procedure of successful transmission of a PUSCH is performed for the first time. The method may comprise the steps of:

step S310, the network device sends RRC Release (RRC Release message) to the terminal device.

In this example, the network device may first send a set of partially compensated open-loop power control parameters to the terminal through a system message, and obtain an index of 1 corresponding to CG-based PUSCH power control; and then sending an RRC release message with the hang configuration information to the terminal to prepare for releasing the connected terminal into an inactive state.

In this example, the RRC release message includes configuration authorization information, which contains PUSCH configuration information including PUSCH power control information.

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

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

In this example, when there is uplink Data to be transmitted in the terminal in the inactive state, and all the Data to be transmitted are mapped to DRBs in an uplink SDT DRB (Data Radio Bearer) list in the inactive state, and the total Data amount is smaller than the Data transmission threshold in the inactive state, the terminal in the inactive state initiates an uplink SDT transmission procedure.

And step S330, the terminal equipment determines the PUSCH second transmitting power of the small data transmission through a power control formula according to the RRC release message.

In this example, the values of the various parameters in the power control formula are determined by SSB measurements. The closed loop power control correction value in the parameter value may be adjusted (e.g., increased or decreased by 1dB or 3 dB) based on the current channel and the channel on which the RRC release message was received.

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

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

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

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

And step S380, the terminal equipment adjusts the subsequent small data PUSCH transmitting 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 a process in which, in an independent networking SA scenario, an inactive terminal sends an uplink small data packet based on a configuration authorization resource, a PUSCH transmission fails for the first time, and a retransmission succeeds. The method may comprise the following steps.

Step S410, the network device sends RRC Release to the terminal device.

Step S420, the terminal device enters an inactive state.

Step S430, the terminal device determines the PUSCH second transmission power for small data transmission through the power control formula according to the RRC release message.

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

Step S450, the network device does not receive the RRC Resume Request, that is, the terminal device fails to transmit for the first time.

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 RRC Request transmission (RRC Retransmission Request information) to the network device by using the Retransmission power.

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

In step S490, the network device sends a feedback message ACK.

The specific process of the above steps S480 to S490 is the same as that of the above steps S360 to S380, and is omitted here.

The detailed descriptions of the steps in the embodiments of fig. 3 and fig. 4 may refer to the corresponding descriptions in the embodiments, and are not repeated here.

The method determines the second transmitting power of small data transmission according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information, can combine the inactive state uplink small data transmission configuration information with the first transmitting power and the first uplink channel state information during RRC release information, greatly improves the transmission success rate of the inactive state terminal during first PUSCH transmission, and solves the problem that the inactive state terminal cannot reasonably control the power of the first uplink data transmission due to failure of receiving a closed-loop power control parameter sent by a network during the first PUSCH transmission, thereby causing higher signaling overhead and power consumption.

According to the method and the device, through power adjustment and retransmission of the inactive state terminal in the first PUSCH transmission failure, the problem that reasonable dynamic adjustment cannot be carried out on uplink transmitting power in the retransmission process when the inactive state terminal fails to send PUSCH data for the first time is solved, and the failure probability of the retransmitted uplink data transmission can be reduced through dynamic power adjustment control in the retransmission process.

According to the method and the device, the power of the terminal in the inactive state after the first PUSCH transmission is successful is dynamically adjusted, so that the success rate of uplink transmission of small data of the terminal in the inactive state is ensured, and the problem of midway disconnection is avoided.

The method and the device can achieve reasonable power control on first PUSCH transmission and retransmission aiming at the terminal in the inactive state, reduce failure probability of the first transmission and retransmission, and improve transmission efficiency of uplink data in the inactive state.

Referring to fig. 5, the present exemplary embodiment further provides a power control method applied to a network device, where the method includes the following steps S510 to S520.

Step S510, sending an RCC release message to the terminal equipment so that the terminal equipment records first transmission power information and first uplink channel state information of a current Physical Uplink Shared Channel (PUSCH); and after the terminal equipment enters an inactive state, determining second transmitting power of small data transmission according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information.

And step S520, receiving the uplink small data which is sent by the terminal equipment in the non-activated state by adopting the second transmitting power. The RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of the inactive uplink small data.

The specific details of each step involved in the power control method applied to the network device in the foregoing embodiment have been described in detail in the power control method applied to the terminal device, and therefore are not described herein again.

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

In an embodiment of the present disclosure, the receiving module 610 is further configured to receive a feedback message of 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 apparatus 600 further includes: a first adjusting 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 determined by the network device according to the second uplink channel state information.

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

and the second adjusting module is used for adjusting the second closed-loop power control correction value by adopting the single adjustment maximum value of the power adjustment parameter when the RRC recovery request message fails to be sent so as to obtain retransmission power.

And the retransmission module is used for carrying out PUSCH retransmission of the uplink small data by adopting the retransmission power.

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

the inactive state uplink small data transmission data radio bearer list is used for indicating a data radio bearer identifier configured for uplink small data transmission;

and the configuration authorization information is used for indicating the configuration authorization resources of the uplink small data transmission configuration.

In an embodiment of the present disclosure, the configuration authorization 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:

a first threshold indicating a threshold for configuring reference signal received power of an SSB authorizing uplink small data transmission;

and the bandwidth part configuration is used for indicating the bandwidth configuration of the configuration authorization uplink small data transmission.

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

the transmission power control accumulation parameter of the terminal equipment is used for indicating the adjustment mode of the PUSCH transmission power control of the terminal equipment in the activated state;

the power adjustment parameter of the terminal equipment is used for indicating a PUSCH transmission power adjustment value corresponding to an index value in a transmission power control command domain of the terminal equipment in an inactive state;

and the first closed loop power control correction value is used for indicating a PUSCH (physical uplink shared channel) transmission power adjustment value of small data uplink transmission of the terminal equipment in the inactive state.

In an embodiment of the present disclosure, the apparatus 600 may be further configured to determine, based on the inactive state uplink small data transmission configuration information, at least one of:

and the open loop configuration parameters and the path loss compensation factors are used for indicating small data uplink transmission PUSCH open loop power compensation items of the terminal equipment in the inactive state.

And the bandwidth is used for indicating bandwidth information occupied by the small data uplink transmission PUSCH of the terminal equipment in the inactive state.

And the path loss is used for indicating the small data uplink transmission PUSCH path loss information of the terminal equipment in the inactive state.

In an embodiment of the present disclosure, the power control information for the inactive uplink small data transmission is obtained through an uplink non-scheduling resource issued by a network device.

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

In one embodiment of the present disclosure, the source/adjustment path of each parameter in the power control information includes at least one of: the bandwidth is determined and issued by the network equipment based on the network sending resource request message sent by the terminal equipment according to the uplink cache state report of the terminal equipment and the current network resource; the first closed loop power control correction value adjusts the power of an uplink transmitting signal through a transmission power control command carried in downlink control information; and the open-loop configuration parameters and the path loss compensation factor set are acquired through system messages.

In one embodiment of the disclosure, the transmission power control command includes an accumulation adjustment mode and an absolute adjustment mode, and the accumulation adjustment mode and the absolute adjustment mode are semi-statically switched through higher layer RRC signaling.

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

and the resource determining module is used for determining each data radio bearer in the inactive uplink small data transmission data radio bearer list as a small data transmission resource.

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

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

and the accumulative adjusting module is used for adjusting the first closed-loop power control correction value by adopting the accumulative adjusting value when the transmission power control accumulative parameter indicates that an accumulative value adjusting mode is started.

And the absolute adjusting module is used for assigning the absolute adjusting value to the first closed loop power control correcting value when the transmission power control accumulated parameter indicates that an accumulated value adjusting mode is closed.

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

In one embodiment of the present disclosure, the apparatus 600 further comprises:

a measurement module, configured to perform SSB measurement, and determine path loss of the terminal device in the inactive state and second channel state information in the inactive state; and based on the association relation between the configuration authorized resources in the inactive state and the SSBs, selecting a target synchronization signal block which meets a small data packet transmission threshold from the SSBs with the association relation.

And the acquisition module is used for acquiring the open-loop configuration parameters and the path loss compensation factors of the terminal equipment in the non-activated state through system information.

A bandwidth determining module, configured to determine, in the bandwidth part configuration, an uplink bandwidth of the terminal device in the inactive state through the RRC release message.

In one embodiment of the disclosure, the determining module may be further operable to: adjusting the first closed-loop power control correction value in response to the comparison of the first channel state information and the second channel state information to obtain a second closed-loop power control correction value; and determining the second transmitting power through a power control formula according to the path loss of the terminal equipment in the non-active state, the open-loop configuration parameters and the path loss compensation factors of the terminal equipment in the non-active state, the uplink bandwidth of the terminal equipment in the non-active state and the second closed-loop power control adjustment value.

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

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

wherein, P _PUSCH Indicating PUSCH transmission power, P, of terminal devices in inactive state _max Indicating the maximum transmission power, P, of the terminal equipment in the inactive state ₀ The method comprises the steps of representing open loop configuration parameters of the terminal equipment in the non-active state, M representing a bandwidth occupied by a PUSCH of the terminal equipment in the non-active state, alpha representing a path loss compensation factor of the terminal equipment in the non-active state, PL representing path loss of the terminal equipment in the non-active state, f representing a second closed loop power control adjustment value, and min representing minimum value operation.

In one embodiment of the disclosure, the sending module is configured to: determining whether the configured authorized resource is valid; and under the condition that the configured authorized resources are effective, sending an RRC recovery request message to the network equipment by adopting the second transmitting power, wherein the RRC recovery request message comprises the uplink small data to be transmitted and/or a recovery reason.

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

In an embodiment of the present disclosure, the device 600 further includes a second timing module, configured to start a second timer when sending the RRC recovery request message to the network device, where the second timer is used to indicate a retransmission cycle of the RRC recovery request message of the terminal device in the inactive state.

In an embodiment of the present disclosure, the apparatus 600 further includes a saving module, where the saving module is configured to, before the terminal device is converted from the connected state to the inactive state, save, by the terminal device, the mounting configuration information, the first transmission power information, the first channel state information, and an association relationship between the inactive configuration authorized resource and the synchronization signal block SSB in an inactive context.

The specific details of each module/unit involved in the terminal device in the above embodiment have been described in detail in the corresponding power control method, and therefore are not described herein again.

Referring to fig. 7, there is further provided in this example embodiment a network device 700, including: a transmitting module 710 and a receiving module 720. A sending module 710, configured to issue an RCC release message to a terminal device, so that the terminal device records 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 for transmitting small data packets according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information; a receiving module 720, configured to receive uplink small data sent by the terminal device in the inactive state by using the second transmit power; the RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of the inactive uplink small data.

The specific details of each module/unit involved in the network device in the above embodiment have been described in detail in the corresponding power control method, and therefore are not described herein again.

As another aspect, the present application also provides a computer-readable medium, which may be contained in the apparatus described in the above embodiments; or may be separate and not incorporated into the device. The computer readable medium carries one or more programs which, when executed by a device, cause the device to perform the method as in the embodiments described below. For example, a device may implement the various steps shown in fig. 2-5, etc.

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 two.

A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing.

More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer-readable signal medium may include a propagated data signal with computer-readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.

In addition, in an exemplary embodiment of the present disclosure, an apparatus capable of implementing the above method is also provided. As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a communication device according to 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. Processor 810 is coupled to memory 820 and transceiver 830, for example, processor 810 may be coupled to memory 820 and transceiver 830 via communication bus 840. The processor 810 is configured to support the network device to perform the corresponding functions in the power control methods of fig. 2-5. The Processor 810 may be a Central Processing Unit (CPU), a Network Processor (NP), a hardware chip, or any combination thereof. The hardware chip may be an Application-Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a Field-Programmable Gate Array (FPGA), general Array Logic (GAL), or any combination thereof. The memory 820 is used to store program codes and the like. The Memory 820 may include Volatile Memory (VM), such as Random Access Memory (RAM); the Memory 820 may also include a Non-Volatile Memory (NVM), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (Hard Disk Drive, HDD) or a Solid-State Drive (SSD); the memory 820 may also comprise a combination of memories of the kind described above.

The transceiver 830 is used to receive or transmit data.

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

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); the RRC release message includes inactive uplink small data transmission configuration information, where the inactive uplink small data transmission configuration information is a configuration resource of uplink small data sent to the terminal device when the terminal device is switched from a connected state to an inactive state.

And after the terminal equipment enters an inactive state, determining second transmitting power for small data transmission according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information.

And controlling the terminal equipment in the non-activated state, and sending uplink small data to the network equipment by adopting the second transmitting power.

The processor 810 can call the program codes to perform the corresponding operations of the power control method, which will not be described herein.

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

The embodiment of the present disclosure further provides a system chip, which includes: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, a pin or a circuit, etc. The processing unit can execute computer instructions to cause a chip in the network communication device to execute any one of the power control methods provided by the embodiments of the present disclosure.

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

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

Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to make a device execute the method according to the embodiments of the present disclosure.

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

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

It should 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 from 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 those skilled in the art to utilize the disclosure.

Claims

1. A power control method is applied to a terminal device, and is characterized in that 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); the RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of inactive uplink small data;

after the terminal equipment enters an inactive state, determining second transmitting power of small data transmission according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information;

2. The power control method according to claim 1, wherein the inactive uplink small data transmission configuration information at least comprises one of:

3. The power control method of claim 2, wherein the configuration authorization information comprises PUSCH configuration information, and wherein the PUSCH configuration information comprises PUSCH time-frequency resource configuration information and PUSCH power control information.

4. The power control method according to claim 3, wherein the PUSCH time-frequency resource configuration information comprises at least one of:

5. The power control method of claim 3, wherein the PUSCH power control information comprises at least one of:

the power adjustment parameter of the terminal equipment is used for indicating a PUSCH (physical uplink shared channel) transmission power adjustment value corresponding to the index value in the transmission power control command domain of the terminal equipment in the non-activated state;

6. The power control method according to claim 1, wherein the power control information for the inactive uplink small data transmission is obtained through an uplink non-scheduling resource issued by a network device.

7. The power control method of claim 5, further comprising:

determining at least one of the following based on the inactive state uplink small data transmission configuration information:

open loop configuration parameters and path loss compensation factors, which are used for indicating small data uplink transmission PUSCH open loop power compensation items of terminal equipment in an inactive state;

the bandwidth is used for indicating bandwidth information occupied by small data uplink transmission PUSCH of the terminal equipment in the inactive state;

8. The power control method of claim 1, further comprising:

before the terminal equipment enters an inactive state, receiving uplink channel measurement configuration information issued by network equipment;

and periodically sending an uplink channel sounding reference signal to the network equipment so that the network equipment obtains and issues the first uplink channel state information by measuring the uplink channel sounding reference signal.

9. The power control method of claim 5, wherein the source/adjustment path of each parameter in the power control information comprises at least one of:

the bandwidth is determined and issued by the network equipment based on the network sending resource request message sent by the terminal equipment according to the uplink cache state report of the terminal equipment and the current network resource;

the first closed loop power control correction value adjusts the power of an uplink transmitting signal through a transmission power control command carried in downlink control information;

and the open-loop configuration parameters and the path loss compensation factor set are acquired through system messages.

10. The power control method of claim 9, wherein the transmission power control command comprises an accumulative adjustment mode and an absolute adjustment mode, and wherein the accumulative adjustment mode and the absolute adjustment mode are semi-statically switched through higher layer RRC signaling.

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:

and configuring the configuration authorization resource to a media access control entity, and starting a first timer, wherein the first timer is used for indicating the effective time of the configuration authorization information.

12. The power control method according to claim 4, wherein when the inactive state uplink small data transmission configuration information includes an inactive state uplink small data transmission data radio bearer list, the method further comprises:

and determining each data radio bearer in the inactive uplink small data transmission data radio bearer list as a small data transmission resource.

13. The power control method of claim 5, wherein the power adjustment parameters comprise a cumulative adjustment value and an absolute adjustment value, the method further comprising:

when the transmission power control accumulated parameter indicates that an accumulated value adjustment mode is started, adjusting the first closed-loop power control correction value by using the accumulated adjustment value;

and when the transmission power control cumulative parameter indicates that a cumulative value adjustment mode is closed, assigning the absolute adjustment value to the first closed loop power control correction value.

14. The power control method of claim 5, further comprising:

and receiving the association relation between the configuration authorization resource in the inactive state and the synchronization signal block SSB sent by the network equipment.

15. The power control method of claim 14, further comprising:

SSB measurement is carried out on the terminal equipment in the non-activated state, and the path loss of the terminal equipment in the non-activated state and the state information of a second uplink channel in the non-activated state are determined; based on the incidence relation between the configuration authorized resources in the non-activated state and the SSBs, selecting a target synchronization signal block which meets a small data packet transmission threshold value from the SSBs with the incidence relation;

acquiring open-loop configuration parameters and path loss compensation factors of the terminal equipment in the non-activated state through system information;

and determining the uplink bandwidth of the terminal equipment in the non-activated state in the bandwidth part configuration through the RRC release message.

16. The power control method of claim 15, wherein the determining a second transmission power for small data transmission according to the inactive uplink small data transmission configuration information, the first transmission power information and the first uplink channel state information comprises:

adjusting the first closed-loop power control correction value in response to a comparison result of the first uplink channel state information and the second uplink channel state information to obtain a second closed-loop power control correction value;

and determining the second transmitting power through a power control formula according to the path loss of the terminal equipment in the inactive state, the open-loop configuration parameters and the path loss compensation factors of the terminal equipment in the inactive state, the uplink bandwidth of the terminal equipment in the inactive state and the second closed-loop power control adjustment value.

17. The power control method of claim 15, wherein the power control formula is expressed as:

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

wherein, P _PUSCH Indicating PUSCH transmission power, P, of inactive terminal equipment _max Indicating the maximum transmission power, P, of the terminal equipment in the inactive state ₀ The method comprises the steps of representing open loop configuration parameters of the terminal equipment in the non-active state, M representing a bandwidth occupied by a PUSCH of the terminal equipment in the non-active state, alpha representing a path loss compensation factor of the terminal equipment in the non-active state, PL representing path loss of the terminal equipment in the non-active state, f representing a second closed loop power control adjustment value, and min representing minimum value operation.

18. The power control method of claim 2, wherein the sending uplink small data to the network device with the second transmission power comprises:

determining whether the configuration authorization resource is valid;

and under the condition that the configured authorized resources are effective, sending an RRC recovery request message to the network equipment by adopting the second transmitting power, wherein the RRC recovery request message comprises the uplink small data to be transmitted and/or a recovery reason.

19. The power control method of claim 18, further comprising:

when the RRC recovery request message is successfully sent, receiving a feedback message of the network equipment and an updated value of a second closed-loop power control correction value;

20. The power control method according to claim 19, wherein the updated value of the second closed loop power control correction value is sent to the terminal device via downlink control information in a physical downlink control channel PDCCH.

21. The power control method of claim 18, further comprising:

when the RRC recovery request message fails to be sent, adjusting the second closed-loop power control correction value by adopting the single adjustment maximum value of the power adjustment parameter so as to obtain retransmission power;

and performing PUSCH retransmission of the uplink small data by adopting the retransmission power.

22. The power control method of claim 19 or 21, wherein the method further comprises:

and determining whether the RRC recovery request message is successfully sent or not according to whether the terminal equipment receives a feedback message of the network equipment or not in a set period.

23. The power control method of claim 11, wherein the determining whether the configuration grant resource is valid comprises at least one of:

the first timer has not timed out;

the target synchronization signal block is above the first threshold.

24. The power control method of claim 18, further comprising:

and when the RRC recovery request message is sent to the network equipment, starting a second timer, wherein the second timer is used for indicating the retransmission cycle of the RRC recovery request message of the terminal equipment in the non-activated state.

25. The power control method of claim 14, wherein the method further comprises:

before the terminal device is converted from a connection state to an inactive state, the terminal device saves the mounting configuration information, the first transmission power information, the first uplink channel state information, and the association relationship between the inactive configuration authorization resource and the synchronization signal block SSB in the context of the inactive state.

26. A power control method applied to a network device, the method comprising:

sending an RCC release message to terminal equipment to enable the terminal equipment to record 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 inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information;

receiving uplink small data sent by the terminal equipment in the non-activated state by adopting the second transmitting power;

the RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of the inactive uplink small data.

27. A terminal device, characterized in that the terminal device comprises:

the receiving module is used for receiving a radio resource control release message sent by network equipment and recording first transmission power information and first uplink channel state information of a current Physical Uplink Shared Channel (PUSCH); the radio resource control RRC release message comprises inactive uplink small data transmission configuration information, and the inactive uplink small data transmission configuration information is a configuration resource of inactive uplink small data;

the determining module is configured to determine, 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, a second transmit power for small data packet transmission through a power control formula after the terminal device enters an RRC inactive state;

and the sending module is used for controlling the terminal equipment in the inactive state and sending the uplink small data to the network equipment by adopting the second transmitting power.

28. The terminal device of claim 27, wherein the receiving module is further configured to: when the RRC recovery request message is successfully sent, receiving a feedback message of the network equipment and an updated value of a second closed-loop power control correction value;

the terminal device further includes:

a first adjusting 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 determined by the network device according to the second uplink channel state information.

29. The terminal device according to claim 27 or 28, wherein the terminal device further comprises:

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

30. A network device, comprising:

the sending module is used for sending an RCC release message to the terminal equipment so that the terminal equipment records 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 for transmitting small data packets according to the inactive state uplink small data transmission configuration information, the first transmitting power information and the first uplink channel state information;

a receiving module, configured to receive uplink small data sent by the terminal device in the inactive state by using the second transmit power;

31. A network device, comprising:

at least one processor;

a communication interface for the communication device to interact with other communication devices, the program instructions when executed in the at least one processor implementing the method of any one of claims 1-25.

32. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1-25.