Transmission power adjustment method, device, terminal, system, and storage medium

Abstract

This disclosure relates to a transmission power adjustment method, device, terminal, system, and storage medium. The method includes the steps of: receiving first information transmitted by a network device, the first information being for triggering user equipment to initiate a random access transmission to a candidate cell and perform a timing advance (TA) measurement, wherein the first information includes at least one of a random access resource of a candidate cell and first beam information initiating random access; and receiving configuration information transmitted by the network device, wherein the configuration information includes a power ramping step for random access retransmission, and determining a first transmission power for random access transmission based on the first information and the power ramping step. This disclosure improves the transmission efficiency of a user sending a preamble sequence and therefore improves the success rate of RACH reception.

Description

[Technical Field]

[0001] This disclosure relates to the telecommunications technology field, and more particularly to transmission power adjustment methods, devices, terminals, systems, and storage media. [Background technology]

[0002] In wireless communication, for mobility reasons, the network decides to trigger a switch to the appropriate cell based on mobility measurement results. To reduce switching delays, it is considered to maintain multiple candidate cells for the user, and the network, based on beam measurement results for each candidate cell and the current serving cell, triggers a switch to the user to a target cell if it determines that a switch is necessary, where the target cell is selected from the candidate cells. [Overview of the project] [Problems that the invention aims to solve]

[0003] Embodiments of this disclosure provide a transmission power adjustment method, device, terminal, system, and storage medium. [Means for solving the problem]

[0004] According to a first embodiment of the embodiments of this disclosure, a transmission power adjustment method is provided which is performed by user equipment, the method being A step of receiving first information transmitted by a network device, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating the random access, and the first information is transmitted to the user equipment by the serving cell of the user equipment. A step of receiving configuration information transmitted by a network device, wherein the configuration information includes a power ramping step that performs random access retransmission, The method includes a step of determining a first transmission power for the random access transmission based on the first information and the power ramping step.

[0005] According to a second embodiment of the present disclosure, a transmission power adjustment method is provided which is performed by a network device, the method being A step of transmitting first information, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating random access, and the first information is transmitted to the user equipment by the serving cell of the user equipment. A step of transmitting configuration information, wherein the configuration information includes a power ramping step of performing random access retransmission, the power ramping step of which is for instructing the user equipment to determine a first transmission power of the random access transmission based on the first information and the power ramping step.

[0006] According to a third embodiment of the embodiments of this disclosure, a transmission power adjustment method is provided, the method is: A step in which a network device transmits first information to user equipment, the first information being for triggering the user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, wherein the first information includes at least one of the random access resources of the candidate cell and first beam information for initiating random access. A step in which the network device transmits setting information to the user equipment, the setting information including a power ramping step for performing random access retransmission A step in which the user equipment determines a first transmission power for the random access transmission based on the first information and the power ramping step

[0007] According to a fourth aspect of an embodiment of the present disclosure, a user equipment is provided, the user equipment including A first transceiver module configured to receive first information transmitted by a network device, the first information being for triggering the user equipment to initiate a random access transmission to a candidate cell to perform a timing advance (TA) measurement, the first information including at least one of a random access resource of the candidate cell and first beam information for initiating random access, the first information being transmitted to the user equipment by a serving cell of the user equipment A second transceiver module configured to receive setting information transmitted by a network device, the setting information including a power ramping step for performing random access retransmission A determination module configured to determine a first transmission power for the random access transmission based on the first information and the power ramping step

[0008] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, the network device including A first transceiver module configured to transmit first information, where the first information is for triggering a user equipment to initiate a random access transmission to a candidate cell and perform a timing advance (TA) measurement, the first information including at least one of a random access resource of the candidate cell and first beam information for initiating the random access, and the first information being transmitted to the user equipment by a serving cell of the user equipment, and the first transceiver module A second transceiver module configured to transmit configuration information, where the configuration information includes a power ramping step for performing a random access retransmission, and the power ramping step is for instructing the user equipment to determine a first transmission power of the random access transmission based on the first information and the power ramping step.

[0009] According to a sixth aspect of an embodiment of the present disclosure A terminal including one or more processors is provided, where the terminal executes the transmission power adjustment method according to any one of the first aspects of the present disclosure.

[0010] According to a seventh aspect of an embodiment of the present disclosure A network device including one or more processors is provided, where the access network device executes the transmission power adjustment method according to any one of the second aspects of the present disclosure.

[0011] According to an eighth aspect of an embodiment of the present disclosure, a communication system including a terminal and a network device is provided, where the terminal is used to implement the transmission power adjustment method according to any one of the first aspects of the present disclosure, and the network device is used to implement the transmission power adjustment method according to any one of the second aspects of the present disclosure.

[0012] According to a ninth aspect of the embodiments of the present disclosure, a storage medium is provided in which an instruction is stored, and when the instruction is executed by a communication device, the communication device is made to execute the transmission power adjustment method described in either the first or second aspect of the present disclosure. [Effects of the Invention]

[0013] The embodiments of this disclosure can improve the transmission efficiency of user-generated preamble sequences and further improve the success rate of RACH (Random Access Channel) reception. [Brief explanation of the drawing]

[0014] To more clearly explain the technical concepts of the embodiments of this disclosure, the following drawings are provided as necessary for the explanation of the embodiments. These drawings represent only a few embodiments of this disclosure and do not specifically limit the scope of protection of this disclosure. [Figure 1a] This is a schematic diagram of the architecture of the transmission power adjustment system shown in the embodiments of this disclosure. [Figure 1b] This is a schematic diagram of a cell switching method as shown in the embodiments of this disclosure. [Figure 2a] This is a schematic diagram of the interaction of the transmission power adjustment method shown in the embodiments of this disclosure. [Figure 2b] This is a schematic diagram of a transmission power adjustment method as shown in the embodiments of this disclosure. [Figure 3] This is a schematic flowchart of the transmission power adjustment method shown in the embodiments of this disclosure. [Figure 4] This is a schematic flowchart of the transmission power adjustment method shown in the embodiments of this disclosure. [Figure 5] This is a schematic flowchart of the transmission power adjustment method shown in the embodiments of this disclosure. [Figure 6] This is a schematic diagram of the user equipment provided by the embodiments of this disclosure. [Figure 7]This is a schematic diagram of the network device provided by the embodiments of this disclosure. [Figure 8] This is a schematic diagram of the communication device 8100 provided by the embodiments of this disclosure. [Modes for carrying out the invention]

[0015] Embodiments of this disclosure provide a transmission power adjustment method, device, terminal, system, and storage medium.

[0016] In the first aspect, embodiments of the present disclosure provide a transmission power adjustment method, the method is A step of receiving first information transmitted by a network device, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating the random access, and the first information is transmitted to the user equipment by the serving cell of the user equipment. A step of receiving configuration information transmitted by a network device, wherein the configuration information includes a power ramping step that performs random access retransmission, The method includes a step of determining a first transmission power for the random access transmission based on the first information and the power ramping step.

[0017] In the above embodiment, the first information triggers the user equipment to initiate a random access transmission to a candidate cell and measure the TA value of the candidate cell, thereby increasing the first transmission power at which the user sends a preamble sequence and improving the success rate of RACH reception.

[0018] In combination with some embodiments of the first embodiment, in some embodiments, the method is The process further includes determining, based on the first information, that the random access transmission is the initial transmission or the random access retransmission.

[0019] In combination with some embodiments of the first aspect, in some embodiments, the first information includes a first field which, via first encoded information, indicates whether the random access transmission is the initial transmission or the random access retransmission.

[0020] In combination with some embodiments of the first embodiment, in some embodiments, the first information includes a second field indicating that the random access transmission is the initial transmission or the number of retransmissions for the random access retransmission.

[0021] In combination with some embodiments of the first embodiment, in some embodiments, it is determined that the second field matches the identifier of the initial transmission, and the random access transmission is determined to be the initial transmission. It is determined that the second field does not match the identifier of the initial transmission, and the difference between the second encoded information and the identifier of the initial transmission is determined to be the number of retransmissions.

[0022] In combination with some embodiments of the first aspect, in some embodiments, the step of determining, based on the first information, that the random access transmission is the initial transmission or the random access retransmission is: A step of determining a time interval between the first information and the second information, wherein the second information is for triggering the user equipment to initiate random access transmission to the candidate cell and perform the previous TA measurement, The method includes the step of determining that the random access transmission is the random access retransmission if the time interval is smaller than a set time interval threshold.

[0023] In combination with some embodiments of the first embodiment, some embodiments include a step of determining the first transmission power of the random access transmission based on the first information and the power ramping step, A step of determining that the random access transmission is the random access retransmission based on the first information, The process includes a step of determining the first transmission power based on the power ramping step.

[0024] In combination with some embodiments of the first embodiment, in some embodiments, the step of determining the first transmission power based on the power ramping step is: If the random access transmission is the random access retransmission, the steps include determining the number of retransmissions for the random access retransmission, The process includes a step of determining the first transmission power based on the number of retransmissions and the power ramping step.

[0025] In combination with some embodiments of the first embodiment, in some embodiments, the first information includes a third field indicating the number of retransmissions, and the step of determining the number of retransmissions for the random access retransmission is: The process includes determining the number of retransmissions based on the third field.

[0026] In combination with some embodiments of the first embodiment, in some embodiments, the step of determining the number of retransmissions for the random access retransmission is: The process includes the step of determining the number of retries based on a retransmission counter.

[0027] In combination with some embodiments of the first embodiment, in some embodiments, the method is The user equipment determines that it will perform the random access transmission once. The process includes the step of accumulating the number of transmissions of the random access transmission based on the retransmission counter.

[0028] In combination with some embodiments of the first embodiment, in some embodiments, the step of determining the first transmission power based on the power ramping step and the number of retransmissions is: The steps include obtaining the number of retransmissions for the random access retransmission, A step of determining the second transmission power of the retransmission access transmission based on the number of retransmissions and the initial transmission power of the random access transmission, The method includes the step of taking the minimum value from the maximum transmission power of the user equipment and the second transmission power to obtain the first transmission power.

[0029] In combination with some embodiments of the first embodiment, in some embodiments, the step of determining the first transmission power of the random access transmission based on the first information and the power ramping step is: Based on the first information, the random access transmission is determined to be the first transmission, and the power ramping value of the user equipment is reset. The process includes a step of determining the first transmission power based on the power ramping step and the reset power ramping value.

[0030] In combination with some embodiments of the first embodiment, in some embodiments, the method is The process further includes a step to reset the retransmission counter to its initial value.

[0031] In combination with some embodiments of the first embodiment, in some embodiments, the first information includes a third field, and the step of determining the first transmission power of the random access transmission based on the first information and the power ramping step is: The steps include determining that the third field matches the identifier of the initial transmission and deciding to reset the power ramping value, The steps include: determining the first transmission power based on the power ramping step and the reset power ramping value, or The steps include determining that the third field does not match the identifier of the initial transmission, and determining that a target power ramping value is determined based on the third field and the power ramping step, The process includes the step of determining the first transmission power based on the target power ramping value and the power ramping value.

[0032] In combination with some embodiments of the first embodiment, in some embodiments, the first information includes a fourth field for updating the transmission beam of the random access transmission, and the step of determining a first transmission power of the random access transmission based on the first information and the power ramping step is: The steps include resetting the power ramping value in response to the fourth field updating the transmission beam of the random access transmission, The process includes determining the first transmission power based on the fourth field, the reset power ramping value, and the power ramping step.

[0033] In combination with some embodiments of the first embodiment, in some embodiments, the method is The process further includes a step to reset the retransmission counter to its initial value.

[0034] In combination with some embodiments of the first aspect, in some embodiments, the first information includes a fifth field indicating that the random access retransmission is the initial transmission, and the step of resetting the power ramping value is A step of resetting the power ramping value based on the fifth field, the step of matching the fifth field to the identifier of the initial transmission.

[0035] In combination with some embodiments of the first aspect, in some embodiments, the first information includes a sixth field indicating the number of retransmissions, and the step of determining the first transmission power based on the fourth field, the reset power ramping value, and the power ramping step is: A step of determining the number of historical retransmissions of the user equipment before beam conversion, The method includes a step of determining the first transmission power based on the sixth field, the history retransmission count, and the power ramping step.

[0036] In the above embodiment, the first information is used to ramp the power of the random access process for measuring the TA of candidate cells, thereby increasing the first transmission power to which the user sends the preamble sequence, thereby improving the success rate of RACH reception and obtaining the TA value of the candidate cells.

[0037] According to a second aspect, an embodiment of the present disclosure provides a transmission power adjustment method performed by a network device, the method being: A step of transmitting first information, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating random access, and the first information is transmitted to the user equipment by the serving cell of the user equipment. A step of transmitting configuration information, wherein the configuration information includes a power ramping step of performing random access retransmission, the power ramping step of which is for instructing the user equipment to determine a first transmission power of the random access transmission based on the first information and the power ramping step.

[0038] In the above embodiment, the network side instructs the user equipment to initiate random access transmission to candidate cells based on the first information, and the user equipment determines the power ramping scheme in the random access process based on the first information, thereby increasing the first transmission power to which the user transmits the preamble sequence and improving the success rate of RACH reception.

[0039] In combination with some embodiments of the second aspect, in some embodiments, the first information includes a first field which, via the first information, indicates whether the random access transmission is the initial transmission or the random access retransmission.

[0040] In combination with some embodiments of the second embodiment, in some embodiments, the first information includes a second field, which, via second encoded information, indicates that the random access transmission is the initial transmission or the random access retransmission, and the number of retransmissions for the random access retransmission.

[0041] In combination with some embodiments of the second embodiment, in some embodiments, it is determined that the second field matches the identifier of the first transmission, and the random access transmission is determined to be the first transmission. If it is determined that the second field does not match the identifier of the initial transmission, the number of retransmissions is determined based on the second field.

[0042] In combination with some embodiments of the second aspect, in some embodiments, the first information includes a fourth field, the fourth field indicating that the user equipment updates the transmission beam of the random access transmission and determines the first transmission power based on the fourth field.

[0043] In the above embodiment, the network side instructs the user equipment to initiate random access transmission based on the first information, and also instructs the power ramping method in the access process in the first information, thereby increasing the user's first transmission power and improving the success rate of RACH reception.

[0044] According to a third aspect, an embodiment of the present disclosure provides a transmission power adjustment method, the method is A step in which a network device transmits first information to user equipment, the first information triggers the user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information that initiates random access. A step in which the network device transmits configuration information to the user equipment, wherein the configuration information includes a power ramping step that performs random access retransmission, The user equipment includes the step of determining a first transmission power for the random access transmission based on the first information and the power ramping step.

[0045] In the above embodiment, the network device transmits first information to the user equipment, and the user equipment initiates random access transmission and performs TA measurement based on the first information, determines the first transmission power of the random access transmission based on the first information, thereby improving the success rate of RACH reception and obtaining the TA value of the candidate cell.

[0046] According to a fourth aspect, embodiments of the present disclosure provide user equipment, said user equipment, A first transceiver module configured to receive first information transmitted by a network device, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating the random access, and the first transceiver module is transmitted to the user equipment by the serving cell of the user equipment. A second transceiver module configured to receive configuration information transmitted by a network device, wherein the configuration information includes a power ramping step that performs random access retransmission, The system includes a determination module configured to determine a first transmission power for the random access transmission based on the first information and the power ramping step.

[0047] In the above embodiment, the first information is used to ramp the power of the random access process for measuring the TA of candidate cells, thereby increasing the first transmission power to which the user sends the preamble sequence, thereby improving the success rate of RACH reception and obtaining the TA value of the candidate cells.

[0048] According to the fifth aspect, embodiments of the present disclosure provide a network device, which is A first transceiver module configured to transmit first information, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating the random access, and the first transceiver module is transmitted to the user equipment by the serving cell of the user equipment. The second transceiver module is configured to transmit configuration information, wherein the configuration information includes a power ramping step for random access retransmission, the power ramping step being for instructing the user equipment to determine a first transmission power for the random access transmission based on the first information and the power ramping step.

[0049] In the above embodiment, the network device transmits first information to the user equipment, the user equipment initiates random access transmission based on the first information and performs TA measurement, determines the first transmission power of the random access transmission based on the first information, thereby improving the success rate of RACH reception and obtaining the TA value of the candidate cell.

[0050] According to the sixth aspect, an embodiment of the present disclosure provides a terminal, which is, Includes one or more processors, Here, the terminal performs the transmission power adjustment method described in any one of the first embodiments of this disclosure.

[0051] According to the seventh aspect, embodiments of the present disclosure provide a network device, the network is Includes one or more processors, Here, the access network device performs the transmission power adjustment method described in any one of the second aspects of this disclosure.

[0052] According to the eighth aspect, an embodiment of the present disclosure provides a communication system including a terminal and a network device, wherein the terminal is configured to implement the transmission power adjustment method described in any one of the first aspects of the present disclosure, and the network device is configured to implement the transmission power adjustment method described in any one of the second aspects of the present disclosure.

[0053] According to the ninth aspect, an embodiment of the present disclosure provides a storage medium in which instructions are stored, and when the instructions are executed on a communication device, the communication device is instructed to execute the transmission power adjustment method described in either the first or second aspect of the present disclosure.

[0054] The above-mentioned terminals, network devices, communication systems, or storage media are all used to carry out the methods provided by the embodiments of this disclosure. Therefore, please refer to the beneficial effects of the corresponding methods for details on the beneficial effects that can be achieved, and a detailed explanation is omitted here.

[0055] Embodiments of this disclosure provide transmission power adjustment methods, devices, terminals, systems, and storage media. In some embodiments, the transmission power adjustment method can be used interchangeably with terms such as information processing method and communication method; user equipment and network devices can be used interchangeably with terms such as information processing device and communication device; and information processing systems and communication systems can be used interchangeably.

[0056] The embodiments described herein are not exhaustive and represent only examples of some embodiments, and do not specifically limit the scope of protection provided herein. Unless otherwise consistent, each step in a particular embodiment can be implemented as an independent embodiment, and each step can be combined in any way. For example, a solution obtained by omitting some steps from a particular embodiment can similarly be implemented as an independent embodiment, the order of each step in a given embodiment can be arbitrarily changed, any selectable implementations of any one embodiment can be combined in any way, and each embodiment can be combined in any way. For example, some or all steps of different embodiments can be combined in any way, and a particular embodiment can be combined in any way with selectable implementations of other embodiments.

[0057] In each embodiment of this disclosure, unless otherwise specified or unless a logical inconsistency arises, the terminology and / or descriptions between embodiments are consistent and can be referenced to one another, and technical features in different embodiments can be combined as new embodiments based on their inherent logical relationships.

[0058] The terms used in the embodiments of this disclosure are for illustrative purposes only and do not limit the disclosure.

[0059] In the embodiments of this disclosure, unless otherwise stated, elements expressed in the singular form, such as "one," "a kind," "the," "above," "the aforementioned," and "this," can represent "only one," "one or more," "at least one," etc. For example, in translations, when articles such as "a," "an," and "the" are used in English, the noun following the article may be understood as singular or plural.

[0060] In the embodiments of this disclosure, “multiple” means two or more.

[0061] In some embodiments, terms such as "at least one of," "one or more," "a plurality of," and "multiple" can be used interchangeably.

[0062] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another," and "A in one case, B in the other" may include the following technical proposals: In some embodiments, A (A is performed independently of B); In some embodiments, B (B is performed independently of A); In some embodiments, A and B are performed selectively (A and B are performed selectively); In some embodiments, A and B (both A and B are performed); and the same applies when there are more options such as A, B, C, etc.

[0063] In some embodiments, the notation "A or B" may include the following technical options: In some embodiments, A (A is performed independently of B); In some embodiments, B (B is performed independently of A); In some embodiments, A and B are performed selectively (A and B are performed selectively); The same applies when there are more options such as A, B, C, etc.

[0064] The prefixes such as "First" and "Second" in the embodiments of this disclosure are merely for distinguishing different subjects of description and do not limit the position, order, priority, number, or content of the subjects of description. For descriptions of the subjects of description, please refer to the descriptions in the context of the claims or embodiments, and the use of prefixes should not constitute an unnecessary limitation. For example, if the subject of description is a "field," the ordinal number before "field" in "First Field" and "Second Field" does not limit the position or order between the "fields," "First" and "Second" do not limit whether the "fields" they modify are in the same message, and do not limit the order of "First Field" and "Second Field." Similarly, if the subject of description is a "level," the ordinal number before "level" in "First Level" and "Second Level" does not limit the priority between the "levels." Also, the number of subjects of description is not limited by the ordinal number and may be one or more. Taking "First Device" as an example, the number of "Devices" may be one or more. Furthermore, the objects modified by different prefixes may be the same or different. For example, if the object described is "device," then "first device" and "second device" may be the same device or different devices, and their types may be the same or different. Furthermore, if the object described is "information," then "first information" and "second information" may be the same information or different information, and their content may be the same or different.

[0065] In some embodiments, terms such as “contain A,” “have A,” “used to indicate A,” and “carry A” may be understood as directly carrying A or as indirectly indicating A.

[0066] In some examples, terms such as "responding to," "responding to the decision that," "in the case of," "when," "on the occasion of," "if," and "if..." can be used interchangeably.

[0067] In some examples, terms such as "greater than," "greater than or equal to," "not less than," "more," "more or equal to," "not less," "higher," "higher or equal to," "not lower," and "greater than or equal to" can be used interchangeably, and terms such as "less than," "less or equal to," "not greater than," "less," "less or equal to," "not more," "lower," "lower or equal to," "not higher," and "less than or equal to" can be used interchangeably.

[0068] In some embodiments, apparatus and devices can be interpreted as physical or virtual, and their names are not limited to those given in the embodiments, but may in some cases be understood as "equipment," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip," "chip system," "entity," "subject," etc.

[0069] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0070] In some embodiments, an "access network device (AN device)" may also be called a "radio access network device (RAN device)," a "base station (BS)," a "radio base station," or a "fixed station." In some embodiments, a "node," an "access point," a "transmission point (TP)," a "reception point (RP)," a "transmission / reception point (TRP)," a "panel," an "antenna panel," an "antenna array," a "cell," a "macro cell," a "small cell," a "femto cell," a "pico cell," a "sector," a "cell group," a "serving cell," a "carrier," a "component carrier," or a "bandwidth part (BWP)."

[0071] In some embodiments, "terminal" or "terminal device" may also be called "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0072] In some implementations, the acquisition of data, information, etc., will comply with the laws and regulations of the country where it is located.

[0073] In some embodiments, data, information, etc., can be obtained after obtaining the user's consent.

[0074] Furthermore, each element, row, or column in the table of embodiments of this disclosure can be implemented as an independent embodiment, and any combination of elements, rows, or columns can also be implemented as an independent embodiment.

[0075] Figure 1a is a schematic diagram of the architecture of a transmission power adjustment system as shown in an embodiment of the present disclosure. As shown in Figure 1a, the communication system 100 includes user equipment (terminal) 101 and a network device 102.

[0076] In some embodiments, the user equipment 101 includes, but is not limited to, at least one of the following: a mobile phone, a wearable device, an Internet of Things device, a communication-enabled automobile, a smart car, a tablet (Pad), a computer with wireless transmission and reception capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home.

[0077] In some embodiments, the network device 102 is, for example, a node or device that accesses a terminal to a wireless network, and the network device may include, but is not limited to, at least one of the following: evolved node B (eNB), next generation eNB (ng-eNB), next generation node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open base station (Open RAN), cloud base station (Cloud RAN), base station in other communication systems, or access node in a Wi-Fi system.

[0078] In some embodiments, the technical proposals of this disclosure are applicable to an Open RAN architecture, in which case interfaces between or within access network devices according to embodiments of this disclosure can be converted to Open RAN internal interfaces, and processes and information exchange between these internal interfaces can be implemented by software or programs.

[0079] In some embodiments, the access network device may consist of a central unit (CU) and distributed units (DU), where the CU may also be called a control unit. Using a CU-DU structure, the protocol layer of the access network device may be divided, with some of the protocol layer functions being centrally controlled by the CU, and the remaining or all of the protocol layer functions being distributed to the DU, with the DU being centrally controlled by the CU, but this is not limited to this configuration.

[0080] The communication systems described in the embodiments of this disclosure are provided to more clearly illustrate the technical solutions of the embodiments of this disclosure and do not limit the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will see, with the evolution of system architectures and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical challenges.

[0081] The embodiments of this disclosure described below may be applied to the communication system 100 shown in Figure 1a, or to some of the entities shown. The entities shown in Figure 1a are illustrative, and the communication system may include all or some of the entities in Figure 1a, or other entities not shown in Figure 1a, the number and form of the entities are arbitrary, each entity may be physical or virtual, the connection relationships between the entities are illustrative, and the entities may or may not be connected, and the connection may be in any manner, such as direct connection, indirect connection, wired connection, wireless connection, etc.

[0082] Each embodiment of this disclosure is based on Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), and IEEE It is applicable to 802.20, Ultra-Wideband (UWB), Bluetooth®, Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) communication technology, systems using other communication methods, and next-generation systems extended based on these. Furthermore, it can be applied in combination with multiple systems (for example, a combination of LTE or LTE-A and 5G).

[0083] In related communication standards, L1 / L2 based inter-cell mobility has been proposed. Figure 1b is a schematic diagram of a cell switching method shown in an embodiment of this disclosure. As shown in Figure 1b, the base station maintains multiple candidate cells for the user. When switching is required due to the user's movement, one cell is selected as the target cell based on the switching criteria, and the user equipment is controlled to switch to the target cell. Unlike conventional cell switching methods, in order to reduce switching delay and complete the switching as quickly as possible, the switching rule is determined based on the measurement results of the L1 (physical layer) of the user equipment, and the switching signaling is also dynamic signaling. Furthermore, in order to avoid interference between multiple transmission signals on the network side, it is necessary to measure the Timing Advance (TA) from the user to each cell in advance.

[0084] In LTM, there are numerous methods for measuring the TA of candidate cells. These include measurement methods that support PDCCH (Physical Downlink Control Channel) Order RACH (Random Access Channel). To reduce the overhead of TA measurement for candidate cells, the process of determining RACH in LTM does not require the transmission of RAR (Random Access Response). If the network side does not correctly receive the preamble for TA value measurement sent from the user equipment, the network side needs to trigger RACH again via PDCCH order to perform TA measurement. In this case, since the initially received preamble failed, it is conceivable to increase the transmission power of the candidate cell's RACH (Random Access Channel) to improve the success rate of RACH reception in order to increase the success rate of this transmission as much as possible.

[0085] In the embodiments of this disclosure, the power ramping of RACH is calculated as follows: P PRACH,b,f,c (i) = min{P CMAX,f,c (i), P PRACH,target,f,c +PL b,f,c}

[0086] Here, P PRACH,b,f,c (i) is the transmit power of the Preamble, P CMAX,f,c (i) is the maximum transmit power of the user equipment, P PRACH,target,f,c This is the target received power of PRACH (Physical Random Access Channel), and PL b,f,c This is the path loss of the downlink reference signal. During random access, if the user equipment fails to receive the RAR correctly, the user equipment considers the transmission of the Preamble to have failed, and retransmits the Preamble and performs power ramping (increasing the transmit power based on the transmit power ramping step). Specifically, the transmit power value of the Preamble is gradually ramped with each retransmission.

[0087] In the embodiments of this disclosure, if the PDCCH order RACH for candidate cell TA measurement in the LTM does not have a RAR (Random Access) process, the user cannot determine whether or not to retransmit the RACH and perform power ramping based on whether or not the RAR was successfully received.

[0088] Figure 2a is a schematic diagram of the interaction of a transmission power adjustment method as shown in an embodiment of the present disclosure. As shown in Figure 2a, the embodiment of the present disclosure relates to a transmission power adjustment method, the method comprising the following steps S2101 to S2105.

[0089] In step S2101, the network device 102 transmits first information to the user equipment 101.

[0090] In some embodiments, terms such as “transmit,” “outgoing,” “reporting,” “delivering,” “transmission,” “two-way transmission,” and “transmit and / or receive” can be used interchangeably.

[0091] In some embodiments, the user equipment 101 receives first information. Optionally, the first information is transmitted to the user equipment 101 by a serving cell corresponding to the user equipment 101.

[0092] In some embodiments, "acquire," "get," "receive," "transmit," "two-way transmission," and "transmit and / or receive" can be used interchangeably, and these can be understood in various ways, such as receiving from another entity, acquiring from a protocol, acquiring from a higher layer, obtaining through one's own processing, or achieving something spontaneously.

[0093] In some embodiments, the names of information and other terms are not limited to those listed in the embodiments, and terms such as "information," "message," "signal," "signaling," "report," "configuration," "indication," "instruction," "command," "channel," "parameter," "domain," "field," "symbol," "symbol," "codebook," "codeword," "codepoint," "bit," "data," "program," and "chip" can be used interchangeably.

[0094] In some embodiments, the first information is for triggering a user equipment to initiate a random access transmission to a candidate cell to perform a timing advance (TA) measurement, and the user equipment 101, after receiving the first information, initiates a random access transmission to a candidate cell, which is used for measuring the TA value of the candidate cell.

[0095] In some embodiments, the name of the first information is not limited and may be, for example, "power instruction information," "power ramping information," "first instruction information," "first trigger information," or "power adjustment information."

[0096] In some embodiments, the first information includes at least one of a random access resource for a candidate cell and first beam information for initiating random access, wherein the random access resource is used to instruct user equipment 101 to initiate random access transmission to the candidate cell based on the resource, and the first beam information is used to instruct user equipment 101 to perform random access transmission to the beam information.

[0097] In some embodiments, the first information is DCI (Downlink Control Information), which may further include Frequency domain resource assignment information, Random Access Preamble index information, UL (Up-Link) / SUL (Supplementary Uplink) indication, SS (Service Signal) / PBCH (Physical Broadcast Channel) index, PRACH (Physical Random Access Channel) coding index, candidate cell identifier (e.g., cell ID), and reserved bit information. Exemplarily, this embodiment provides the first information, which includes various types of information as shown below.

[0098] [Table 1]

[0099] In some embodiments, terms such as "resource block (RB)," "physical resource block (PRB)," "sub-carrier group (SCG)," "resource element group (REG)," "PRB pair," "RB pair," "resource element (RE)," and "sub-carrier" can be used interchangeably.

[0100] In some embodiments, the first information may be used to determine whether a random access transmission is the initial transmission or the random access retransmission.

[0101] In some embodiments, the first information includes a first field.

[0102] In some embodiments, the first field is for indicating, via first coded information, whether a random access transmission is a first transmission or a random access retransmission. A fixed coded number can indicate the transmission type of a random access transmission; for example, if the first coded information is 0 / 1, it is determined that the random access transmission is a first transmission, and if the first coded information is 1 / 0, it is determined that the random access transmission is a random access retransmission.

[0103] In some embodiments, the determination or decision may be made by a value represented by one bit (0 or 1), by a boolean value represented as true or false, or by a numerical comparison (e.g., a comparison with a planned value), but is not limited to these.

[0104] In some embodiments, terms such as "encoded information," "codebook," "codeword," and "precoding matrix" can be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0105] In some embodiments, the name of the first field is not limited and may be, for example, "transmission instruction information," "character information," "transmission type instruction information," "transmission type encoding information," or "transmission count instruction information."

[0106] In some embodiments, the first information includes a second field.

[0107] In some embodiments, the second field indicates whether a random access transmission is an initial transmission or a random access retransmission, and the number of retransmissions for the random access retransmission. Exemplarily, the number indicated by the second field is M, where M=0 indicates the random access transmission is an initial transmission, M≠0 indicates the random access transmission is a retransmission, and in this case, the number indicated by M is the number of retransmissions for the random access retransmission. Optionally, the identifier for initial transmissions can be set according to actual needs, and the second field can be compared with the identifier for initial transmissions to determine whether the corresponding random access transmission is an initial transmission or a retransmission. In some embodiments, if the second field matches the identifier for initial transmissions, it is determined that the random access transmission is an initial transmission; if the second field does not match the identifier for initial transmissions, it is determined that the difference between the second encoded information and the identifier for initial transmissions is the number of retransmissions.

[0108] In some embodiments, it is possible to determine whether the current random access transmission is an initial transmission or a retransmission based on the time interval between the first and second pieces of information received, where the second piece of information is used to trigger the user equipment to initiate a random access transmission to the candidate cell and perform the previous TA measurement. The time interval between the first and second pieces of information is determined, and if the time interval is smaller than a set time interval threshold, it is determined that the random access transmission is a random access retransmission. Exemplaryly, the time interval between the first piece of information received this time and the second piece of information received last time can be calculated, and if the time interval is smaller than a time interval threshold, it is determined that the current random access transmission is a random access retransmission; if the time interval is greater than or equal to the time interval threshold, it is determined that the current random access transmission is an initial transmission.

[0109] In some of these examples, terms such as "time," "point in time," "duration," and "time position" can be used interchangeably, and terms such as "duration," "time zone," "time window," "window," and "duration" can be used interchangeably.

[0110] In some embodiments, the first information includes a first field and a second field, the first field of which may be used to indicate whether the current random access transmission is an initial transmission or a random access retransmission, and if the random access transmission is a random access retransmission, the second field indicates the number of retransmissions for this random access retransmission.

[0111] In step S2102, the network device 102 transmits configuration information.

[0112] In some embodiments, the user equipment 101 receives configuration information.

[0113] In some embodiments, the configuration information includes a power ramping step for random access retransmission, the first information is for instructing the user equipment 101 to perform random access transmission, and in order to improve the success rate of random access retransmission, it is necessary to ramp the first transmission power of the random access transmission to obtain the TA value of the candidate cell. In this embodiment, the configuration information instructs the power ramping step for random access retransmission, and the first transmission power of the random access transmission can be selected by the power ramping step and the number of retransmissions for random access retransmission. For example, if the number of retransmissions for random access retransmission is determined to be 4 in the above step, the first transmission power = initial transmission power + 4 × power ramping step.

[0114] In step S2103, the user equipment 101 determines the first transmission power for random access transmission based on the first information and the power ramping step.

[0115] In some embodiments, based on first information, it is determined that a random access transmission is a random access retransmission, and based on a power ramping step, the first transmission power is determined. Exemplaryly, if the first information indicates that the random access transmission performed by user equipment 101 is a random access retransmission, the first transmission power is increased based on the power ramping step to obtain the first transmission power for the random access transmission. The first transmission power for the random access transmission can be obtained by superimposing the power ramping step on the first transmission power for the hierarchical access transmission.

[0116] In some examples, terms such as "component carrier (CC)," "cell," "frequency carrier," and "carrier frequency" can be used interchangeably.

[0117] In some embodiments, random access transmission is random access retransmission, the number of retransmissions for random access retransmission is determined, and the first transmission power is determined based on the number of retransmissions and the power ramping step. If it is determined that random access transmission is random access retransmission based on the first information, the number of retransmissions for random access retransmission is determined, and at this time, the number of retransmissions for random access retransmission can be indicated by the first information, or it can be indicated by other information, and in this embodiment, the method for determining the number of retransmissions is not limited. In order to improve the success rate of RACH reception, it is necessary to ramp the transmission power each time random access retransmission occurs, and therefore each retransmission of random access transmission is accompanied by one ramping of the first transmission power, the power value of the first transmission power that is ramped each time is the power ramping step, and the transmission power of the current random access transmission can be obtained by superimposing the number of retransmissions × power ramping step on the initial transmission power.

[0118] In some embodiments, first information determines the number of retransmissions, where the first information includes a third field indicating the number of retransmissions, the maximum value of the third field being the maximum number of times transmission power ramping is permitted. Exemplary, the first information includes a third field used to indicate how many retransmissions the triggered RACH is, where the value of the third field is limited, and the maximum value indicated by the third field is the maximum number of times user equipment 101 is allowed to perform ramping.

[0119] In some embodiments, a retransmission counter is defined in the user equipment 101.

[0120] In some embodiments, a retransmission counter is used to statistically track the number of transmissions in a random access transmission.

[0121] In some embodiments, the number of retries is determined based on a retransmission counter. For example, when user equipment 101 performs a random access transmission, the retransmission counter counts once, and the number of retries for the current random access transmission can be determined by reading the value of the retransmission counter.

[0122] In some embodiments, the name of the retransmission counter is not limited and may be, for example, "counter," "retransmission count statistics device," "count statistics device," "counter," or "retransmission statistics device."

[0123] In some embodiments, the user equipment decides to perform a random access transmission once, and the number of random access transmissions is accumulated based on a retransmission counter. For example, the number of random access transmissions of the user equipment 101 is accumulated using a retransmission counter, and when the user equipment 101 completes a random access transmission once, the value of the retransmission counter increases by 1.

[0124] In some embodiments, the number of retransmissions of random access retransmission is obtained, and based on the number of retransmissions and the initial transmission power of the random access transmission, a second transmission power of the retransmission access transmission is determined, and the minimum value is taken from the maximum transmission power of the user equipment and the second transmission power to be the transmission power. Exemplarily, in this embodiment, when it is determined that the random access transmission is a random access retransmission, if the number of retransmissions, which is based on a sum of the electric power ramping step multiplied by the number of retransmissions and the initial transmission power of the first transmission executed by the number of retransmissions and the user equipment 101, is determined,the result superposed on the initial transmission power gives the second transmission power of the retransmission access transmission. Further, in such a case, the minimum value is taken from the maximum transmission power allowed on the user equipment 101,and the second transmission power to be the first transmission power ofthe current random access transmission.

[0125] Exemplarily, the transmission power of the user equipment 101 can be determined by the following formula. PPP RACH =min{P CMAX ,P initial +N×Step}

[0126] Here, P RACH is the transmission power of the random access transmission, P CMAX is the maximum transmission power allowed on the user equipment 101, P initial is the initial transmission power, N is the number of retransmissions, and Step is the electric power ramping step. Optionally, in one embodiment, considering the path loss during RACH transmission, adding the path loss value to the second transmission power can improve the success rate of the candidate cell receiving the RACH signal.

[0127] In some embodiments, the initial transmission power when the user equipment 101 performs the first power transmission can be calculated by the following method. P initial =P target +PL P target=preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA

[0128] Here, P initial This is the initial transmission power, P target is the preset transmission power, and PL is the downlink reference signal path loss value.

[0129] preambleReceivedTargetPower is the transmission power of the initial Preamble, which may be set by RRC; DELTA PREAMBLE is the power impact value; PREAMBLE_POWER_RAMPING_COUNTER is the number of retransmissions, which has a value of 1; it is the power ramping step for each retransmission; and it is the additional power offset required when using a 2-step type random access process.

[0130] In some embodiments, the transmission power of the user equipment 101 can be calculated using the following formula. P RACH =min{P CMAX ,P target +PL} P target =preambleReceivedTargetPower+DELTA_PREAMBLE+N×Step+OFFSET

[0131] Here, OFFSET is a power compensation value, which can be set based on different transmission beams.

[0132] Figure 2b is a schematic diagram of a transmission power adjustment method shown in an embodiment of the present disclosure. As shown in Figure 2b, user equipment 101 performs one RACH transmission based on first information at time t1, receives the first information again at time t2, and performs a second RACH transmission based on the first information. However, at this time, for some reason, the candidate cell fails to successfully receive the RACH transmission initiated at time t2, and initiates another RACH transmission based on first information at time t3. In this case, user equipment 101 can determine, based on first information or the time interval between time t1 and t3, that the RACH to be performed this time is a retransmission. Then, based on the power ramping step in first information, the transmission power of the RACH transmission at time t3 is ramped to improve the success rate of RACH reception. Here, any cause affecting the reception of RACH transmission by a candidate cell may include low RACH transmission power, interference during transmission, interference of the RACH transmission signal by other signals preventing the candidate cell from successfully receiving it, or timing collision of the RACH transmission signal with other uplink signals preventing the candidate cell from successfully receiving it. The causes of the candidate cell's inability to successfully receive RACH are not limited in this embodiment.

[0133] In some embodiments, based on the first information, it is determined that a random access transmission is the first transmission and the power ramping value of the user equipment is reset. Optionally, in this embodiment, if it is determined that a random access transmission is a retransmission, the transmission power of the random access retransmission can be determined in two ways: (1) The number of retransmissions for the random access retransmission is determined, and the transmission power of the random access retransmission is determined based on the number of retransmissions, the power ramping step, and the initial transmission power, i.e., transmission power = number of retransmissions × power ramping step + initial transmission power. (2) The user equipment 101 accumulates the ramping value for each retransmission, and if it is determined that a random access transmission is a random access retransmission, it further accumulates one power ramping step in the accumulated value until it reaches the maximum accumulated number or accumulated value. This gives the transmission power of the random access transmission.

[0134] If the first piece of information determines that the current random access transmission is the first transmission, the power ramping value of the user equipment 101 must be reset, that is, the historical transmission power should be reset to its initial value.

[0135] In some embodiments, if it is determined that a random access transmission is the first transmission, the value of the retransmission counter is reset to its initial value. In this embodiment, the user equipment 101 is equipped with a retransmission counter, which is used to statistically track the number of retransmissions for random access retransmissions. If it is determined that a random access transmission is the first transmission based on the first information, the retransmission counter is reset to its initial value. Exemplarily, the initial value of the retransmission counter may be 0 or 1, and other values ​​may be set for the retransmission counter according to actual needs, and this embodiment is not limited thereto.

[0136] In some embodiments, the first information includes a third field.

[0137] In some embodiments, the third field indicates whether the random access transmission is the initial transmission or a random access retransmission, and when the random access transmission is a random access retransmission, it indicates the number of retransmissions for the random access retransmission.

[0138] For example, if it is determined that the third field matches the identifier of the initial transmission, it is determined to reset the power ramping value, and the transmission power is determined based on the power ramping step and the reset power ramping value. If it is determined that the third field does not match the identifier of the initial transmission, the target power ramping value is determined based on the fourth encoded information and the power ramping step, and the transmission power is determined based on the target power ramping value and the power ramping value. When the third field matches the identifier of the initial transmission, it is determined that the current random access transmission is the initial transmission, in which case the power ramping value of the user equipment 101 is reset, the power value of the current RACH transmission is set as the initial transmission power, and the transmission power of the current random access transmission is determined based on the reset power ramping value and the power ramping step, where the identifier of the initial transmission may be 0 or 1. When the third field does not match the identifier of the initial transmission, it is determined that the current random access transmission is a random access retransmission, in which case the transmission power is determined based on the fourth encoded information corresponding to the third field. Selectively, the transmission power for random access transmission is determined by the following formula. P RACH =(NN o ) × Step + P initial

[0139] Here, P RACH is the transmission power for random access transmission, N is the fourth coded information, and N o is the identifier for the initial transmission, Step is the power ramping step, and P initial This is the initial transmission power.

[0140] In some embodiments, the first information includes a fourth field.

[0141] In some embodiments, the fourth field is used to refresh the transmission beam in random access transmissions.

[0142] In some embodiments, the name of the fourth field is not limited and may be, for example, "transmission beam update information," "beam update information," or "beam information."

[0143] In some embodiments, the user equipment 101 updates the transmission beam of a random access transmission based on the fourth field in the first information. When the transmission beam is updated, it indicates that the beam resources occupied by the RACH currently performing the random access transmission are different from the beam resources occupied by previous random access transmissions. Therefore, it is necessary to perform the random access transmission again based on the updated transmission beam. This random access transmission is the first transmission, and when updating the transmission beam by the fourth field, the power ramping value of the current random access transmission is reset. The transmission power of the current random access transmission is determined based on the fourth field, the reset power ramping value, and the power ramping step.

[0144] In some embodiments, a retransmission counter is defined in the user equipment 101, and when the user equipment 101 updates the transmission beam of a random access transmission based on the fourth field in the first information, it resets the value of the retransmission counter to an initial value, where the initial value may be 0 or 1.

[0145] In some embodiments, the first information includes a fifth field.

[0146] In some embodiments, the fifth field is used to indicate whether a random access transmission is an initial transmission or a random access retransmission, and if the random access transmission is a random access retransmission, the fifth field is used to indicate the number of retransmissions for the random access retransmission.

[0147] In some embodiments, the name of the fifth field is not limited and may be, for example, "transmission count instruction information," "transmission count information," "transmission type coding information," "transmission count coding information," or "transmission character information."

[0148] In some embodiments, the first information includes a fourth field, and when the fourth field updates the transmission beam of a random access transmission, the power ramping value of the current random access transmission is reset based on the fifth field, where the fifth field matches the identifier of the initial transmission. That is, if the first information includes a fourth field, the network device 102 updates the fifth field in the first information, replacing the fifth field with the identifier of the initial transmission, and via the fifth field, instructs the user equipment to reset the power ramping value.

[0149] In some embodiments, the first information includes a sixth field.

[0150] In some embodiments, the sixth field is used to indicate the number of retries for random access retransmissions.

[0151] In some embodiments, the name of the sixth field is not limited and may be, for example, "transmission instruction information," "character information," "transmission type instruction information," "transmission type encoding information," or "transmission count instruction information."

[0152] In some embodiments, the first information includes a fourth field, and when updating the transmission power of the random access transmission via the fourth field, the number of historical retransmissions of the user equipment before beam conversion is determined, and the transmission power is determined based on the sixth field, the number of historical retransmissions, and the power ramping step. Optionally, the transmission power of the random access transmission can be determined by the following formula: P RACH =(NN old ) × Step + P initial

[0153] Here, P RACH is the transmission power for random access transmission, N is the sixth field, and N old is the number of retransmissions in the history, Step is the power ramping step, and P initialThis is the initial transmission power.

[0154] In step S2104, the user equipment 101 transmits third information based on the first transmission power.

[0155] In some embodiments, the network device 102 receives the third information.

[0156] In some embodiments, the third piece of information is used to trigger a candidate cell to perform a TA measurement.

[0157] In some embodiments, the name of the third information is not limited and may be, for example, "random access MSG1 / MSGA" or "preamble sequence".

[0158] In step S2105, the network device 102 performs TA measurement based on the second information.

[0159] In some embodiments, the third piece of information is used to measure the TA value of a candidate cell corresponding to the user equipment 101.

[0160] The communication method according to the embodiments of this disclosure may include at least one of steps S2101 to S2105. For example, step 1 can be implemented as an independent embodiment, step 2 can be implemented as an independent embodiment, steps 1+3 can be implemented as an independent embodiment, steps 1+2+3 can be implemented as independent embodiments, and are not limited to these.

[0161] In some embodiments, steps S2101 and S2102 can be performed in a different order or simultaneously.

[0162] In some embodiments, steps S2103, S2104, and S2105 are optional, and in different embodiments, one or more of these steps may be omitted or replaced.

[0163] In some embodiments, steps S2101 and S2102 are optional, and in different embodiments, one or more of these steps may be omitted or replaced.

[0164] In some embodiments, please refer to other optional embodiments described before or after the specification corresponding to Figure 2a.

[0165] Figure 3 is a schematic flowchart of a transmission power adjustment method shown in an embodiment of the present disclosure. As shown in Figure 3, the embodiment of the present disclosure relates to a transmission power adjustment method performed by user equipment, and the method may include the following steps S3101 to S3104.

[0166] In step S3101, the first information transmitted by the network device is received.

[0167] In some embodiments, the user equipment 101 receives first information transmitted by the network device 102, but is not limited to this, and may also receive first information transmitted by other entities.

[0168] In some embodiments, the user equipment 101 receives first information defined by the protocol.

[0169] In some embodiments, the user equipment 101 obtains first information via network RRC signaling, MAC CE signaling, or DCI signaling.

[0170] In some embodiments, the user equipment 101 performs processing to obtain first information.

[0171] In some embodiments, the first information is transmitted by the network device 102 to the user equipment 101 via the serving cell.

[0172] In some embodiments, when a serving cell detects that user equipment 101 is far from the current serving cell and needs to switch cells, and therefore selects a target cell from among candidate cells as the serving cell, the serving cell generates first information and sends it to user equipment 101.

[0173] In some embodiments, step S3101 is omitted, and terminal 101 autonomously implements the function indicated by the first information, or the above function is predetermined or default.

[0174] For selectable implementations of step S3101, please refer to the selectable implementations of step S2101 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0175] In step S3102, the configuration information sent by the network device is received.

[0176] In some embodiments, the configuration information includes a power ramping step that performs random access retransmissions.

[0177] In some embodiments, the user equipment 101 receives configuration information transmitted by the network device 102, but is not limited to this; it may also receive configuration information transmitted by other entities.

[0178] In some embodiments, the user equipment 101 receives configuration information defined by the protocol.

[0179] In some embodiments, the user equipment 101 obtains configuration information from upper layers (upper layer(s)).

[0180] In some embodiments, the user equipment 101 processes and obtains configuration information.

[0181] For selectable implementations of step S3102, please refer to the selectable implementations of step S2102 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0182] In step S3103, the first transmission power for random access transmission is determined.

[0183] In some embodiments, the user equipment 101 determines the transmission power of random access transmission based on first information and a power ramping step.

[0184] In some embodiments, the user equipment 101 can determine the transmission power of random access transmission based on the power ramping step in the configuration information.

[0185] For selectable implementations of step S3103, please refer to the selectable implementations of step S2103 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0186] In step S3104, the third piece of information is transmitted.

[0187] In some embodiments, the user equipment 101 can transmit third information based on the transmitted power.

[0188] In some embodiments, the third piece of information is sent to a candidate cell, but it is not limited to this, and may be sent to other cells as well.

[0189] For selectable implementations of step S3104, please refer to the selectable implementations of step S2104 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0190] A communication method relating to an embodiment of the present disclosure may include at least one of steps S3101 to S3103. For example, step 1 can be implemented as an independent embodiment, step 2 can be implemented as an independent embodiment, steps 1+3 can be implemented as an independent embodiment, steps 1+2+3 can be implemented as an independent embodiment, and are not limited to these.

[0191] In some embodiments, steps S3101 and S3102 can be performed in any order or simultaneously.

[0192] In some embodiments, step S3104 is optional, and in different embodiments, one or more of these steps can be omitted or replaced.

[0193] Figure 4 is a schematic flowchart of a transmission power adjustment method shown in an embodiment of the present disclosure. As shown in Figure 4, an embodiment of the present disclosure relates to a transmission power adjustment method performed by a network device, the method comprising the following steps S4101 to S4102.

[0194] In step S4101, the first information is transmitted.

[0195] In some embodiments, the first information is for triggering the user equipment to initiate random access transmission to a candidate cell and perform a timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and the first beam information initiating the random access, and the first information is transmitted to the user equipment by the user equipment's serving cell.

[0196] In some embodiments, the network device 102 transmits the first information to the user equipment 101, but it is not limited to this, and may transmit the first information to other entities.

[0197] In some embodiments, the network device 102 may transmit the first information to another entity, and the other entity may transmit the first information to the user equipment 101.

[0198] Selectively, the above first information is intended to trigger the user equipment 101 to perform the step of initiating a random access transmission and performing TA measurement. For selectable implementations, please refer to the selectable implementations of steps S2101 and S2103 in Figure 2a, and other relevant parts in the embodiment related to Figure 2, and a detailed explanation is omitted here.

[0199] For selectable implementations of step S4101, please refer to the selectable implementations of step S2101 in Figure 2a and other relevant parts in the embodiment related to Figure 2; a detailed explanation is omitted here.

[0200] In step S4102, the configuration information is sent.

[0201] In some embodiments, the configuration information includes a power ramping step that performs random access retransmission, which instructs the user equipment to determine the transmission power for random access transmission based on the first information and the power ramping step.

[0202] In some embodiments, the network device 102 transmits configuration information to the user equipment 101, but it is not limited to this, and may transmit configuration information to other entities.

[0203] In some embodiments, the network device 102 performs processing to obtain second information.

[0204] For selectable implementations of step S4102, please refer to the selectable implementations of step S2102 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0205] A transmission power adjustment method related to an embodiment of the present disclosure may include at least one of steps S4101 to S4102. For example, step 1 can be implemented as an independent embodiment, step 2 can be implemented as an independent embodiment, and steps 1 and 2 can be implemented as independent embodiments, but are not limited thereto.

[0206] In some embodiments, steps S4101 and S4102 can be performed in any order or simultaneously.

[0207] Figure 5 is a schematic flowchart of a transmission power adjustment method shown in an embodiment of the present disclosure. As shown in Figure 5, the embodiment of the present disclosure relates to a transmission power adjustment method, which includes the following steps S5101 to S5104.

[0208] In step S5101, the first information transmitted by the network device via the serving cell is received.

[0209] In some embodiments, the first piece of information is intended to trigger the user equipment to initiate random access to candidate cells and perform TA measurement.

[0210] In some embodiments, the first instruction information includes at least random access resource information and random access beam information transmitted by the candidate cell.

[0211] Selectively, based on the first information, it can be determined that the currently triggered RACH is either the initial transmission or a random access retransmission.

[0212] In some embodiments, if the first information triggers a user to initiate a RACH on a candidate cell, a 1-bit piece of information included in the first information may indicate whether the currently triggered RACH is an initial transmission or a random access retransmission. For example, if the bit information is 1 / 0, it is an initial transmission, and if the bit information is 0 / 1, it is a random access retransmission.

[0213] In some embodiments, the first information includes M bits of information used to instruct the user equipment whether the currently triggered RACH is an initial transmission or a random access retransmission, and, if it is a random access retransmission, also used to instruct the user equipment on the number of retransmissions for the random access retransmission.

[0214] Selectively, if M is 0 or 1, the current RACH transmission is the first transmission; if M>1, the current RACH transmission is a retransmission and the number of retransmissions is M-1. If M is defined as 0, then M>0 indicates that the current RACH transmission is a retransmission, where M is the number of retransmissions.

[0215] In some embodiments, user equipment can determine whether a transmission is a retransmission based on the time interval between two receptions of the first piece of information that triggers the initiation of a RACH to the same candidate cell. If the time interval is shorter than a time threshold, it indicates that the current RACH transmission is a random access retransmission.

[0216] For selectable implementations of step S5101, please refer to the selectable implementations of step S2101 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0217] In step S5102, the configuration information transmitted by the network device is received.

[0218] In some examples, the configuration information includes at least a power ramping step each time power is transmitted.

[0219] For selectable implementations of step S5102, please refer to the selectable implementations of step S2101 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0220] In step S5103, in response to the triggered RACH being a random access retransmission, power ramping is performed on the transmission of the RACH.

[0221] In some embodiments, the number of retransmissions is determined in response to RACH being a random access retransmission.

[0222] Selectively, the first information indicates which retransmission triggered the RACH, where N is the number of retransmissions indicated, M or (M-1), and the maximum value that M bits can indicate is the maximum number of rampings allowed by the user equipment.

[0223] Optionally, a counter is introduced to record how many times the currently transmitted RACH has been retransmitted, where the initial value of the counter is 0 or 1. If the initial value is 0, the retransmission count is the value displayed on the counter; if the initial value is 1, the retransmission count is the value displayed on the counter minus 1.

[0224] In some embodiments, the power ramping value of RACH is N × Step, where N is the number of RACH retransmissions and Step is the power ramping step.

[0225] Selectively, the current RACH transmit power triggered by the first information can be calculated using the following method: P RACH =min{P CMAX ,P initial +N × Step}

[0226] Here, P RACH P is the transmission power for random access transmission. CMAX This is the maximum transmission power that the user equipment 101 allows, and P initial is the initial transmission power, N is the number of retransmissions, and Step is the power ramping step.

[0227] For selectable implementations of step S5103, please refer to the selectable implementations of step S2103 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0228] In step S5104, the power ramping value is reset.

[0229] In some embodiments, if the triggered RACH is the first transmission, the power ramping value is set to zero.

[0230] If a counter is introduced as an option, and it is determined that RACH is the first transmission, the counter is reset to its initial value of 0 or 1.

[0231] If the number of times is specified in the first information, the system determines whether to reset the power ramping based on the value of M. If M matches the initial value, the power ramping is reset; if M does not match the initial value, the current power ramping is superimposed by ramping the power value to obtain the transmission power of the current RACH transmission.

[0232] In some embodiments, retransmission is instructed in the first information, but if the first information instructs the user equipment to perform RACH transmission based on the new beam information at the time of triggering, the power ramping value needs to be reset.

[0233] Selectively, a counter is introduced, and if new beam information is indicated in the first information, or if the beam information for the current RACH transmission is updated by the first information, the counter value is reset to its initial value of 0 or 1.

[0234] If the number of times is specified in the first information, M in the first information is initially set to either 0 or 1.

[0235] If, as selectable, new beam information is indicated in the first information, or if the beam information of the current RACH transmission is updated by the first information, the transmission power of the current RACH transmission is calculated using the following formula. P RACH =(NN old ) × Step + P initial

[0236] Here, P RACH is the transmission power for random access transmission, N is the sixth field, and N old is the number of retransmissions in the history, Step is the power ramping step, and P initial This is the initial transmission power.

[0237] For the selectable implementations of step S5104, please refer to the selectable implementations of step S2103 in Figure 2a and other relevant parts of the embodiment related to Figure 2a; a detailed explanation is omitted here.

[0238] A communication method relating to an embodiment of the present disclosure may include at least one of steps S5101 to S5104. For example, step 1 can be implemented as an independent embodiment, step 2 can be implemented as an independent embodiment, steps 1+2+3 can be implemented as an independent embodiment, and steps 1+2+4 can be implemented as an independent embodiment, but are not limited to these.

[0239] In some embodiments, steps S5101 and S5102 can be performed in any order or simultaneously.

[0240] In some embodiments, steps S5103 and S5104 are optional, and in different embodiments, one or more of these steps can be omitted or replaced.

[0241] In the embodiments of this disclosure, selectable implementations of some or all of the steps can be arbitrarily combined with some or all of the steps in other embodiments, and can be arbitrarily combined with selectable implementations in other embodiments.

[0242] Embodiments of the present disclosure provide an apparatus that implements any one of the above methods, for example, an apparatus that includes a unit or module for implementing each step performed by a terminal in any one of the above methods. It also provides an apparatus that includes a unit or module for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any one of the above methods.

[0243] Furthermore, in the above-described device, the division of each unit or module is merely a logical functional division; in actual implementation, they may be fully or partially integrated into a single physical entity, or they may be physically separated. Also, a unit or module in the device may be implemented by a processor calling software; for example, the device includes a processor, the processor is connected to memory, the memory stores instructions, and the processor implements the functions of each unit or module in the device by calling the instructions stored in memory, where the processor is, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory is either in-device memory or external memory. Alternatively, a unit or module in the device may be implemented in the form of a hardware circuit, and the design of the hardware circuit can implement the functions of some or all of the units or modules; the hardware circuit may be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are realized by designing the logical relationships of the components within the circuit. In another implementation, the hardware circuit can be implemented by a programmable logic device (PLD), and taking a field programmable gate array (FPGA) as an example, it can contain a large number of logic gates, and the functions of some or all of the above units or modules are realized by configuring the connection relationships between the logic gates using a configuration file. All of the above units or modules can be implemented in a form where the processor calls software, or in the form of hardware circuitry, or in a form where the processor calls software, with the remaining parts being implemented in the form of hardware circuitry.

[0244] In embodiments of this disclosure, the processor is a circuit having signal processing capabilities. In one implementation, the processor may be a circuit capable of reading and executing instructions, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can realize specific functions through logical relationships of hardware circuits, the logical relationships of which are constant or reconfigurable, such as an FPGA. The processor is a hardware circuit realized by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD). In a reconfigurable hardware circuit, the process by which the processor loads a configuration file to realize the hardware circuit configuration may be understood as the process by which the processor loads instructions to realize the functions of some or all of the above units or modules. Furthermore, it may also be hardware circuitry designed for artificial intelligence, which may be understood as ASICs such as Neural Network Processing Units (NPUs), Tensor Processing Units (TPUs), and Deep Learning Processing Units (DPUs).

[0245] Figure 6 is a schematic diagram of a user equipment provided by an embodiment of the present disclosure. As shown in Figure 6, the user equipment 6100 may include at least one of a first transmit / receive module 6101, a second transmit / receive module 6102, a determination module 6103, and so on.

[0246] In some embodiments, the first transceiver module 6101 is for receiving first information transmitted by a network device, where the first information is for triggering a user equipment to initiate a random access transmission to a candidate cell to perform a timing advance (TA) measurement. The first information includes at least one of a random access resource of the candidate cell and first beam information for initiating the random access. The second transceiver module 6102 is used for receiving configuration information transmitted by the network device, where the configuration information includes a power ramping step for performing a random access retransmission. The determination module 6103 is used for determining the transmission power of the random access transmission based on the first information and the power ramping step. Optionally, the first transceiver module 6101 is used for performing at least one of communication steps such as reception executed by the user equipment 101 in any one of the above methods, and detailed description thereof is omitted here. Optionally, the second transceiver module 6102 is used for performing at least one of other steps executed by the user equipment 101 in any one of the above methods, and detailed description thereof is omitted here. Optionally, the determination module 6103 is used for performing at least one of determination steps executed by the user equipment 101 in any one of the above methods, and detailed description thereof is omitted here.

[0247] FIG. 7 is a schematic configuration diagram of a network device provided according to an embodiment of the present disclosure. As shown in FIG. 7, the network device 7100 may include at least one of a first transceiver module 7101 and a second transceiver module 7102.

[0248] In some embodiments, the first transceiver module 7101 is used to transmit first information, where the first information is for triggering the user equipment to initiate a random access transmission to a candidate cell for performing timing advance (TA) measurement. The first information includes at least one of a random access resource of the candidate cell and first beam information for initiating random access. The second transceiver module 7102 is used to transmit configuration information, where the configuration information includes a power ramping step for performing random access retransmission, and the power ramping step is for instructing the user equipment to determine the transmission power of the random access transmission based on the first information and the power ramping step. Optionally, the first transceiver module 7101 is used to execute at least one of the communication steps such as transmission / reception executed by the network device 102 in any one of the above methods, and detailed description here is omitted. Optionally, the second transceiver module 7102 is used to execute at least one of the other steps executed by the network device 102 in any one of the above methods, and detailed description here is omitted.

[0249] FIG. 8 is a schematic configuration diagram of a communication device 8100 provided according to an embodiment of the present disclosure. The communication device 8100 may be a network device (such as an access network device, a core network device, etc.), or may be a terminal (such as a user equipment, etc.), or may be a chip, a chip system, or a processor, etc. that supports the implementation of any one of the above methods by the network device, or may be a chip, a chip system, or a processor, etc. that supports the implementation of any one of the above methods by the terminal. The communication device 8100 is used to implement the method described in the above method embodiment. Specifically, refer to the description in the above method embodiment.

[0250] As shown in Figure 8, the communication device 8100 includes one or more processors 8101. The processors 8101 may be general-purpose processors or dedicated processors, and may be, for example, baseband processors or central processors. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication equipment (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. The communication device 8100 is used to perform any one of the above methods.

[0251] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or some of the memories 8102 may be located outside the communication device 8100.

[0252] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceivers 8103 perform at least one of the communication steps, such as transmission and / or reception, in the above method, and the processor 8101 performs at least one of the other steps.

[0253] In some embodiments, the transceiver may include a receiver and / or transmitter, and the receiver and transmitter may be separate or integrated as a single unit. Optionally, terms such as transceiver, transceiver unit, transceiver device, and transceiver circuit can be used interchangeably; terms such as transmitter, transmitting unit, transmitting device, and transmitting circuit can be used interchangeably; and terms such as receiver, receiving unit, receiving device, and receiving circuit can be used interchangeably.

[0254] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 may be connected to a memory 8102 and may be used to receive signals from the memory 8102 or other devices, or to transmit signals to the memory 8102 or other devices. For example, the interface circuit 8104 may be used to read instructions stored in the memory 8102 and to transmit those instructions to a processor 8101.

[0255] The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in this disclosure is not limited thereto, and the structure of the communication device 8100 is not limited by Figure 8. The communication device may be a standalone device or part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC or chip, or a chip system or subsystem; (2) a set of one or more ICs, the set of ICs may optionally include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be incorporated into other devices; (5) a receiver, terminal device, smart terminal device, cellular telephone, wireless device, handheld device, mobile unit, in-vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) other.

[0256] This disclosure further provides a storage medium in which instructions are stored, and when the instructions are executed on the communication device 8100, the communication device 8100 performs one of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to that which is a storage medium readable by other devices. Optionally, the storage medium is a non-transitory storage medium, but is not limited to that which is a temporary storage medium.

[0257] This disclosure further provides a program product, which, when executed by the communication device 8100, performs one of the above methods. Optionally, the program product is a computer program product.

[0258] This disclosure further provides a computer program which, when executed on a computer, the computer performs one of the above methods.

Claims

1. A method for adjusting transmission power performed by user equipment, A step of receiving first information transmitted by a network device, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating random access, and the first information is transmitted to the user equipment by the serving cell of the user equipment. A step of receiving configuration information transmitted by a network device, wherein the configuration information includes a power ramping step that performs random access retransmission, The step includes determining a first transmission power for the random access transmission based on the first information and the power ramping step, A method for adjusting transmission power, characterized by the following features.

2. The step further includes determining, based on the first information, that the random access transmission is the initial transmission or the random access retransmission. The transmission power adjustment method according to feature 1.

3. The first information includes a first field indicating that the random access transmission is the initial transmission or that the random access transmission is a retransmission. The transmission power adjustment method according to feature 2.

4. The first information includes a second field indicating whether the random access transmission is the initial transmission or the number of retransmissions for the random access retransmission, The transmission power adjustment method according to feature 2.

5. If the second field matches the identifier of the initial transmission, it is determined that the random access transmission is the initial transmission. If the second field does not match the identifier of the initial transmission, it is determined that the random access transmission is a retransmission. The transmission power adjustment method according to feature 4.

6. The step of determining, based on the first information, that the random access transmission is the initial transmission or the random access retransmission is: A step of determining a time interval between the first information and the second information, wherein the second information is for triggering the user equipment to initiate random access transmission to the candidate cell and perform the previous TA measurement, A step of determining that the random access transmission is the random access retransmission, the step of determining that the time interval is less than a set time interval threshold, The transmission power adjustment method according to feature 2.

7. The step of determining the first transmission power of the random access transmission based on the first information and the power ramping step is: Based on the first information, the step of determining that the random access transmission is the random access retransmission, The step of determining the first transmission power based on the power ramping step includes: The transmission power adjustment method according to feature 2.

8. The step of determining the first transmission power based on the power ramping step is: If the random access transmission is the random access retransmission, the steps include determining the number of retransmissions for the random access retransmission, The step includes determining the first transmission power based on the number of retransmissions and the power ramping step, The transmission power adjustment method according to feature 7.

9. The first information includes a third field that indicates the number of retransmissions, The step of determining the number of retransmissions based on the third field is included. The transmission power adjustment method according to feature 8.

10. The step of determining the number of retransmissions for the random access retransmission is: The step of determining the number of retransmissions based on a retransmission counter, The transmission power adjustment method according to feature 8.

11. The user equipment determines that it will perform the random access transmission once. The step includes accumulating the number of transmissions of the random access transmission based on the retransmission counter, The transmission power adjustment method according to claim 10.

12. The step of determining the first transmission power based on the number of retransmissions and the power ramping step is: The steps include obtaining the number of retransmissions for the random access retransmission, A step of determining the second transmission power of the retransmission access transmission based on the number of retransmissions and the initial transmission power of the random access transmission, The step includes taking the minimum value from the maximum transmission power of the user equipment and the second transmission power to obtain the first transmission power, The transmission power adjustment method according to feature 8.

13. The step of determining the first transmission power of the random access transmission based on the first information and the power ramping step is: Based on the first information, the random access transmission is determined to be the first transmission, and the power ramping value of the user equipment is reset. The step includes determining the first transmission power based on the power ramping step and the reset power ramping value, The transmission power adjustment method according to feature 1.

14. The step further includes resetting the retransmission counter value to its initial value, The transmission power adjustment method according to feature 13.

15. The first information includes a third field, The step of determining the first transmission power of the random access transmission based on the first information and the power ramping step is: The steps include determining that the third field matches the identifier of the initial transmission and deciding to reset the power ramping value, The steps include: determining the first transmission power based on the power ramping step and the reset power ramping value, or The steps include determining that the third field does not match the identifier of the initial transmission, and determining that a target power ramping value is determined based on the third field and the power ramping step, The step of determining the first transmission power based on the target power ramping value and the power ramping value includes: The transmission power adjustment method according to feature 1.

16. The first information includes a fourth field for updating the transmission beam of the random access transmission, The step of determining the first transmission power of the random access transmission based on the first information and the power ramping step is: The steps include resetting the power ramping value in response to the fourth field updating the transmission beam of the random access transmission, The step of determining the first transmission power based on the fourth field, the reset power ramping value, and the power ramping step, The transmission power adjustment method according to feature 1.

17. The step further includes resetting the retransmission counter value to its initial value, The transmission power adjustment method according to feature 16.

18. The first information includes a fifth field indicating that the random access retransmission is the initial transmission, The step of resetting the power ramping value is: A step of resetting the power ramping value based on the fifth field, the step of matching the fifth field with the identifier of the initial transmission, The transmission power adjustment method according to feature 16.

19. The first information includes a sixth field that indicates the number of retransmissions, The step of determining the first transmission power based on the fourth field, the reset power ramping value, and the power ramping step is: A step of determining the number of historical retransmissions of the user equipment before beam conversion, The step of determining the first transmission power based on the sixth field, the history retransmission count, and the power ramping step, The transmission power adjustment method according to feature 16.

20. A transmission power adjustment method performed by a network device, A step of transmitting first information, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating random access, and the first information is transmitted to the user equipment by the serving cell of the user equipment. A step of transmitting configuration information, wherein the configuration information includes a power ramping step for random access retransmission, and the power ramping step is for instructing the user equipment to determine a first transmission power for the random access transmission based on the first information and the power ramping step. A method for adjusting transmission power, characterized by the following features.

21. The first information includes a first field, which, via the first information, indicates whether the random access transmission is the initial transmission or the random access retransmission. The transmission power adjustment method according to feature 20.

22. The first information includes a second field indicating whether the random access transmission is the initial transmission or the number of retransmissions for the random access retransmission, The transmission power adjustment method according to feature 20.

23. It is determined that the second field matches the identifier of the initial transmission, and that the random access transmission is the initial transmission. If it is determined that the second field does not match the identifier of the initial transmission, the number of retransmissions is determined based on the second field. The transmission power adjustment method according to feature 22.

24. The first information includes a fourth field, the fourth field being for instructing the user equipment to update the transmission beam of the random access transmission and to determine the first transmission power based on the fourth field. The transmission power adjustment method according to feature 20.

25. A method for adjusting transmission power, A step in which a network device transmits first information to user equipment, the first information being for triggering the user equipment to initiate random access transmission to a candidate cell and perform timing advance (TA) measurement, wherein the first information includes at least one of the random access resources of the candidate cell and first beam information for initiating random access. A step in which the network device transmits configuration information to the user equipment, wherein the configuration information includes a power ramping step that performs random access retransmission, The user equipment includes the step of determining a first transmission power for the random access transmission based on the first information and the power ramping step, A method for adjusting transmission power, characterized by the following features.

26. It is user equipment, A first transceiver module configured to receive first information transmitted by a network device, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform a timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating the random access, and the first transceiver module is transmitted to the user equipment by the serving cell of the user equipment. A second transceiver module configured to receive configuration information transmitted by a network device, wherein the configuration information includes a power ramping step that performs random access retransmission, Includes a determination module configured to determine a first transmission power for the random access transmission based on the first information and the power ramping step, User equipment characterized by the following:

27. A network device, A first transceiver module configured to transmit first information, wherein the first information is for triggering a user equipment to initiate random access transmission to a candidate cell and perform a timing advance (TA) measurement, and the first information includes at least one of the random access resources of the candidate cell and first beam information initiating the random access, and the first transceiver module is transmitted to the user equipment by the serving cell of the user equipment. A second transceiver module configured to transmit configuration information, wherein the configuration information includes a power ramping step for random access retransmission, the power ramping step being for instructing the user equipment to determine a first transmission power for the random access transmission based on the first information and the power ramping step, A network device characterized by the following features.

28. It is a terminal, Includes one or more processors, The terminal performs the transmission power adjustment method described in any one of claims 1 to 19. A terminal characterized by the following features.

29. A network device, Includes one or more processors, The access network device performs the transmission power adjustment method described in any one of claims 20 to 22. A network device characterized by the following features.

30. A communication system including terminals and network devices, The terminal is configured to implement the transmission power adjustment method described in any one of claims 1 to 19, and the network device is configured to implement the transmission power adjustment method described in any one of claims 20 to 22. A communication system characterized by the following features.

31. A storage medium in which commands are stored, When the command is executed by a communication device, the communication device is instructed to execute the transmission power adjustment method described in any one of claims 1 to 19 or 20 to 22. A storage medium characterized by the following features.

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