CN117693986A

CN117693986A - Power control method, terminal, network equipment and communication system

Info

Publication number: CN117693986A
Application number: CN202380011963.9A
Authority: CN
Inventors: 罗星熠
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-03-12

Abstract

The present disclosure relates to a power control method, a terminal, a network device, and a communication system. The method comprises the following steps: determining first power, wherein the first power is determined based on repeated transmission times, and the repeated transmission times are times when a terminal repeatedly sends first information to a target cell based on a scheduling-free physical uplink shared channel, and the first information is used for indicating the terminal to confirm switching to the target cell; and the first power is used for sending the first information to a target cell by the terminal. By the embodiment of the disclosure, the power control of the terminal sending the confirmation message to the target cell in the cell switching process can be realized.

Description

Power control method, terminal, network equipment and communication system

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a power control method, a terminal, a network device, and a communication system.

Background

In dynamic cell mobility management (L1/L2-triggered mobility, LTM), in order to reduce the overhead of handover time, timing Advance (TA) information of each candidate cell is considered to be measured in Advance for supporting a cell handover (cell handover) procedure without a random access procedure (RACH-less). In the cell switch procedure of RACH-less, the terminal needs to send specific information to the target cell for accessing the target cell.

Disclosure of Invention

In a cell switch process supporting RACH-less, how to determine the power of transmitting specific information to a target cell is a technical problem to be solved. The embodiment of the disclosure provides a power control method, a terminal, network equipment and a communication system, so as to solve the technical problems.

According to a first aspect of an embodiment of the present disclosure, a power control method is provided, including: determining first power, wherein the first power is determined based on repeated transmission times, and the repeated transmission times are times when a terminal repeatedly sends first information to a target cell based on a scheduling-free physical uplink shared channel, and the first information is used for indicating the terminal to confirm switching to the target cell; and the first power is used for sending the first information to a target cell by the terminal.

According to a second aspect of an embodiment of the present disclosure, a power control method is provided, the method including: receiving first information, wherein the first information is sent to a target cell by a terminal based on first power, the first power is determined based on repeated transmission times, and the repeated transmission times are times when the terminal repeatedly sends the first information to the target cell based on a scheduling-free physical uplink shared channel; the first information is used for indicating the terminal to confirm the switching to the target cell.

According to a third aspect of embodiments of the present disclosure, there is provided a terminal, including: the processing module is used for determining first power, wherein the first power is determined based on repeated transmission times, the repeated transmission times are times when a terminal repeatedly sends first information to a target cell based on a scheduling-free physical uplink shared channel, and the first information is used for indicating the terminal to confirm switching to the target cell; and the sending module is used for sending the first information to a target cell based on the first power.

According to a fourth aspect of embodiments of the present disclosure, there is provided a network device, comprising: the receiving module is used for receiving first information, the first information is sent to the target cell by the terminal based on first power, the first power is determined based on repeated transmission times, and the repeated transmission times are times when the terminal repeatedly sends the first information to the target cell based on the scheduling-free physical uplink shared channel; the first information is used for indicating the terminal to confirm switching to a target cell.

According to a fifth aspect of embodiments of the present disclosure, there is provided a terminal, including: one or more processors; wherein the processor is configured to perform the power control method of the first aspect.

According to a sixth aspect of embodiments of the present disclosure, there is provided a network device, comprising: one or more processors; wherein the processor is configured to perform the power control method of the second aspect.

According to a seventh aspect of embodiments of the present disclosure, there is provided a communication system comprising a terminal configured to implement the power control method of the first aspect and a network device configured to implement the power control method of the second aspect.

According to an eighth aspect of embodiments of the present disclosure, there is provided a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the power control method of the first or second aspect.

By the embodiment of the disclosure, the power control of sending the confirmation message to the target cell in the cell switching process can be realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following description of the embodiments refers to the accompanying drawings, which are only some embodiments of the present disclosure, and do not limit the protection scope of the present disclosure in any way.

Fig. 1A is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure.

Fig. 1B is a schematic diagram of a cell switch cell handover procedure for RACH-less according to an embodiment of the present disclosure.

Fig. 2 is an interactive schematic diagram of a power control method shown in accordance with an embodiment of the present disclosure.

Fig. 3A is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure.

Fig. 3B is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure.

Fig. 3C is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure.

Fig. 4A is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure.

Fig. 4B is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure.

Fig. 4C is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure.

Fig. 5 is an interactive schematic diagram of a power control method shown in accordance with an embodiment of the present disclosure.

Fig. 6A is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.

Fig. 6B is a schematic structural diagram of a network device according to an embodiment of the present disclosure.

Fig. 7A is a schematic structural diagram of a communication device 7100 according to an embodiment of the present disclosure.

Fig. 7B is a schematic structural diagram of a chip 7200 according to an embodiment of the disclosure.

Detailed Description

The embodiment of the disclosure provides a power control method, a terminal, network equipment and a communication system.

In a first aspect, an embodiment of the present disclosure proposes that a terminal determines a first power, where the first power is determined based on a number of repeated transmissions, where the number of repeated transmissions is a number of times that the terminal repeatedly sends first information to a target cell based on a scheduling-free physical uplink shared channel CG PUSCH, where the first information is used to instruct the terminal to confirm handover to the target cell; and the first power is used for sending the first information to a target cell by the terminal.

In the above embodiment, the first power is determined based on the number of repeated transmissions of the first information, and the terminal transmits the first information to the target cell according to the first power. By the method in the embodiment, the control of the transmission power can be realized, the success rate of the terminal for cell switching is improved, and the communication performance is improved.

With reference to some embodiments of the first aspect, in some embodiments, the first power and the number of repeated transmissions satisfy the following relationship: and each time the number of repeated transmission times is increased by a first number, the first power is increased by a first power amplitude, and the first power is smaller than or equal to the maximum transmission power.

In the above embodiment, as the number of repeated transmissions increases, the first power is increased to improve the success rate of retransmission transmission, which is beneficial to improving the reliability and performance of the communication system, reducing communication errors, improving the quality of service, and controlling the first power for transmitting the first message to be less than or equal to the maximum transmission power can ensure that the device does not exceed a reasonable power range.

With reference to some embodiments of the first aspect, in some embodiments, the first power is determined based on a number of repeated transmissions, a power ramp-up step size, and a power control parameter.

In the above embodiment, the communication system may improve the resource utilization efficiency by determining the first power based on the number of repeated transmissions, the power boost step size, and the power control parameter.

With reference to some embodiments of the first aspect, in some embodiments, the power control parameter includes a path loss; the path loss is determined based on a path loss reference signal, and the path loss reference signal is determined by at least one of the following modes: determining based on a first beam, wherein the first beam is used for retransmitting the first information, the path loss reference signal is a first synchronization signal block corresponding to the first beam, and the first beam is a beam selected for carrying out beam measurement on the target cell; and determining based on second information, wherein the second information is used for indicating the terminal to perform cell switching and indicating a transmission configuration indication state of a target cell, and the path loss reference signal is a second synchronous signal block associated with the transmission configuration indication state.

In the above embodiment, the path loss reference signal is determined based on the first beam or the second information, and the path loss is determined based on the path loss reference signal. The communication system better estimates the path loss to accurately control the first power.

With reference to some embodiments of the first aspect, in some embodiments, the number of retransmissions is determined based on a counter, where when a counter initial value count=0, the number of retransmissions number=count; when the counter initial value count=1, numberreconnsmssion=count-1.

In the above embodiment, the counter is introduced to determine the number of repeated transmissions, and the first power can be controlled in a targeted manner by tracking the number of repeated transmissions, so as to optimize the success rate of repeated transmissions.

With reference to some embodiments of the first aspect, in some embodiments, a beam used by the terminal to repeatedly send the first information to the target cell changes, and the retransmission counter number is reset.

In the above-described embodiment, when retransmission of the first information is performed using a new transmission beam, counting is restarted to track the number of retransmissions. This helps to ensure that the value of the counter is associated with the new transmission beam, thereby better controlling the first power.

With reference to some embodiments of the first aspect, in some embodiments, the first power is:

P＝min{P _c,max ,P _target +α×PL+f(l)+Δ}，

wherein P is _target ＝P ₀ +NumberRetransmission×RampingSte；

Or p=min { P _c,max ,P ₀ +α×PL+Δ+NumberRetransmission×RampingStep}；

Wherein P is _c,max For maximum transmission power, P0 is the target received power, PL is the path loss, α is the weight factor used to adjust the path loss, Δ is other adjustment, f (l) is the closed loop adjustment value, and ramingestep is the power ramp step size.

In the above-described embodiments, using the first power, transmitting the first information to the target cell helps to maintain the stability and quality of the communication,

the success rate of message transmission is improved.

In a second aspect, an embodiment of the present disclosure proposes that a network device receives first information, where the first information is sent by a terminal to a target cell based on first power, where the first power is determined based on a number of repeated transmissions, where the number of repeated transmissions is a number of times that the terminal repeatedly sends the first information to the target cell based on a scheduling-free physical uplink shared channel; the first information is used for indicating the terminal to confirm the switching to the target cell.

In the above embodiment, the first power is determined based on the number of repeated transmissions of the first information, and the target cell receives the first information sent by the terminal according to the first power. By the method in the embodiment, the control of the transmission power can be realized, the success rate of the terminal for cell switching is improved, and the communication performance is improved.

With reference to some embodiments of the second aspect, in some embodiments, the first power and the number of repeated transmissions satisfy the following relationship: and each time the number of repeated transmission times is increased by a first number, the first power is increased by a first power amplitude, and the first power is smaller than or equal to the maximum transmission power.

With reference to some embodiments of the second aspect, in some embodiments, the first power is determined based on a number of repeated transmissions, a power ramp-up step size, and a power control parameter.

With reference to some embodiments of the second aspect, in some embodiments, the power control parameter includes path loss; the path loss is determined based on a path loss reference signal, and the path loss reference signal is determined by at least one of the following modes: determining based on a first beam, wherein the first beam is used for retransmitting the first information, the path loss reference signal is a first synchronization signal block of a reference signal corresponding to the first beam, and the first beam is a beam selected for carrying out beam measurement on the target cell; and determining based on second information, wherein the second information is used for indicating the terminal to perform cell switching and indicating a transmission configuration indication state of a target cell, and the path loss reference signal is a second synchronous signal block associated with the transmission configuration indication state.

With reference to some embodiments of the second aspect, in some embodiments, the number of retransmissions is determined based on a counter, where when the counter initial value count=0, the number of retransmissions number=count; when the counter initial value count=1, numberreconnsmssion=count-1.

With reference to some embodiments of the second aspect, in some embodiments, the first power is:

P＝min{P _c,max ,P _target +α×PL+f(l)+Δ}，

wherein P is _target ＝P ₀ +NumberRetransmission×RampingSte；

Or p=min { P _c,max ,P ₀ +α×PL+Δ+NumberRetransmission×RampingStep}；

In a third aspect, an embodiment of the present disclosure proposes a terminal, including: the processing module is used for determining first power, wherein the first power is determined based on repeated transmission times, the repeated transmission times are times when a terminal repeatedly sends first information to a target cell based on a scheduling-free physical uplink shared channel, and the first information is used for indicating the terminal to confirm switching to the target cell; and the receiving and transmitting module is used for transmitting the first information to a target cell based on the first power.

In a fourth aspect, an embodiment of the present disclosure proposes a network device, including: the receiving and transmitting module is used for receiving first information, the first information is sent to the target cell by the terminal based on first power, the first power is determined based on repeated transmission times, and the repeated transmission times are times when the terminal repeatedly sends the first information to the target cell based on the scheduling-free physical uplink shared channel; the first information is used for indicating the terminal to confirm switching to a target cell.

In a fifth aspect, an embodiment of the present disclosure proposes a terminal, including: one or more processors; wherein the processor is configured to perform the power control method of the first aspect.

In a sixth aspect, embodiments of the present disclosure provide a network device, including: one or more processors; wherein the processor is configured to perform the power control method of the second aspect.

In a seventh aspect, embodiments of the present disclosure provide a communication system, including: a terminal configured to implement the power control method of the first aspect, and a network device configured to implement the power control method of the second aspect.

In a ninth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the power control method of any one of the first aspect and the second aspect.

It will be appreciated that the above-mentioned terminal, access network device, first network element, second network element, core network device, communication system, storage medium, program product, computer program, chip or chip system are all configured to perform the methods set forth in the embodiments of the present disclosure. Therefore, the advantages achieved by the method can be referred to as the advantages of the corresponding method, and will not be described herein.

The embodiment of the disclosure provides a power control method, a terminal, network equipment and a communication system. In some embodiments, terms such as a power control method and an information processing method, a communication method, and the like may be replaced with each other, terms such as a power control device and an information processing device, a communication device, and the like may be replaced with each other, and terms such as an information processing system, a communication system, and the like may be replaced with each other.

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In the presently disclosed embodiments, elements that are referred to in the singular, such as "a," "an," "the," "said," etc., may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the presently disclosed embodiments, "plurality" refers to two or more.

In some embodiments, terms such as "at least one of", "one or more of", "multiple of" and the like may be substituted for each other.

In some embodiments, "A, B at least one of", "a and/or B", "in one case a, in another case B", "in response to one case a", "in response to another case B", and the like, may include the following technical solutions according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments, execution is selected from a and B (a and B are selectively executed); in some embodiments a and B (both a and B are performed). Similar to that described above when there are more branches such as A, B, C.

In some embodiments, the description modes such as "a or B" may include the following technical schemes according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments execution is selected from a and B (a and B are selectively executed). Similar to that described above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In some embodiments, "comprising a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In some embodiments, terms "responsive to … …", "responsive to determination … …", "in the case of … …", "at … …", "when … …", "if … …", "if … …", and the like may be interchanged.

In some embodiments, terms "greater than", "greater than or equal to", "not less than", "more than or equal to", "not less than", "above" and the like may be interchanged, and terms "less than", "less than or equal to", "not greater than", "less than or equal to", "not more than", "below", "lower than or equal to", "no higher than", "below" and the like may be interchanged.

In some embodiments, the apparatuses and devices may be interpreted as entities, or may be interpreted as virtual, and the names thereof are not limited to those described in the embodiments, and may also be interpreted as "device (apparatus)", "device)", "circuit", "network element", "node", "function", "unit", "component (section)", "system", "network", "chip system", "entity", "body", and the like in some cases.

In some embodiments, a "network" may be interpreted as an apparatus comprised in the network, e.g. an access network device, a core network device, etc.

In some embodiments, the "access network device (access network device, AN device)" may also be referred to as a "radio access network device (radio access network device, RAN device)", "Base Station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", and in some embodiments may also be referred to as a "node)", "access point (access point)", "transmission point (transmission point, TP)", "Reception Point (RP)", "transmission and/or reception point (transmission/reception point), TRP)", "panel", "antenna array", "cell", "macrocell", "microcell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier (component carrier)", bandwidth part (BWP), etc.

In some embodiments, a "terminal" or "terminal device" may be referred to as a "user equipment" (UE), a "user terminal" (MS), a "mobile station" (MT), a subscriber station (subscriber station), a mobile unit (mobile unit), a subscriber unit (subscore unit), a wireless unit (wireless unit), a remote unit (remote unit), a mobile device (mobile device), a wireless device (wireless device), a wireless communication device (wireless communication device), a remote device (remote device), a mobile subscriber station (mobile subscriber station), an access terminal (access terminal), a mobile terminal (mobile terminal), a wireless terminal (wireless terminal), a remote terminal (mobile terminal), a handheld device (handset), a user agent (user), a mobile client (client), a client, etc.

In some embodiments, the acquisition of data, information, etc. may comply with laws and regulations of the country of locale.

In some embodiments, data, information, etc. may be obtained after user consent is obtained.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

Fig. 1A is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure. As shown in fig. 1A, a communication system 100 includes a terminal (terminal) 101 and a network device 102.

In some embodiments, the terminal 101 includes at least one of a mobile phone (mobile phone), a wearable device, an internet of things device, a communication enabled car, a smart car, a tablet (Pad), a wireless transceiver enabled computer, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), for example, but is not limited thereto.

In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

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

In some embodiments, the technical solutions of the present disclosure may be applied to an Open RAN architecture, where an access network device or an interface in an access network device according to the embodiments of the present disclosure may become an internal interface of the Open RAN, and flow and information interaction between these internal interfaces may be implemented by using software or a program.

In some embodiments, the access network device may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split the protocol layers of the access network device, where functions of part of the protocol layers are centrally controlled by the CU, and functions of the rest of all the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU, but is not limited thereto.

In some embodiments, the core network device may be a device, including one or more network elements, or may be a plurality of devices or groups of devices, including all or part of the first network element 1031, the second network element 1032, and the like, respectively. The network element may be virtual or physical. The core network comprises, for example, at least one of an evolved packet core (Evolved Packet Core, EPC), a 5G core network (5G Core Network,5GCN), a next generation core (Next Generation Core, NGC).

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are applicable to similar technical problems.

The embodiments of the present disclosure described below may be applied to the communication system 100 shown in fig. 1, or a part of the main body, but are not limited thereto. The respective bodies shown in fig. 1 are examples, and the communication system may include all or part of the bodies in fig. 1, or may include other bodies than fig. 1, and the number and form of the respective bodies may be arbitrary, and the respective bodies may be physical or virtual, and the connection relationship between the respective bodies is examples, and the respective bodies may not be connected or may be connected, and the connection may be arbitrary, direct connection or indirect connection, or wired connection or wireless connection.

The embodiments of the present disclosure may be applied to long term evolution (Long Term Evolution, LTE), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), upper 3G, IMT-Advanced, fourth generation mobile communication system (4th generation mobile communication system,4G)), fifth generation mobile communication system (5th generation mobile communication system,5G), 5G New air (New Radio, NR), future wireless access (Future Radio Access, FRA), new wireless access technology (New-Radio Access Technology, RAT), new wireless (New Radio, NR), new wireless access (New Radio access, NX), future generation wireless access (Future generation Radio access, FX), global System for Mobile communications (GSM (registered trademark)), CDMA2000, ultra mobile broadband (Ultra Mobile Broadband, UMB), IEEE 802.11 (registered trademark), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra WideBand (Ultra-wide bandwidth, UWB), bluetooth (Bluetooth) mobile communication network (Public Land Mobile Network, PLMN, device-D-Device, device-M, device-M, internet of things system, internet of things (internet of things), machine-2, device-M, device-M, internet of things (internet of things), system (internet of things), internet of things 2, device (internet of things), machine (internet of things), etc. In addition, a plurality of system combinations (e.g., LTE or a combination of LTE-a and 5G, etc.) may be applied.

Fig. 1B is a schematic diagram of a cell switch cell handover procedure for RACH-less according to an embodiment of the present disclosure. Referring to fig. 1B, the terminal pre-configures information. The terminal reports an L1 measurement report (also referred to as beam measurement result) to the source cell (also referred to as serving cell before handover). The source cell decides whether to perform cell handover based on the L1 measurement report/based on the respective beam measurement results. In the case where it is determined to perform cell switching, a target cell (target cell) for cell switching is selected from the candidate cells. The source cell sends cell handover signaling (cell switch command) to the terminal. After receiving cell switch command, the terminal does not access the target cell through a random access procedure (Random Access Channel less, RACH). But rather sends information to the target cell to let the target cell determine that the terminal device accesses the target cell, which may also be understood as the terminal acknowledges access to the target cell. For example, the terminal sends a specific "first UL data" to the target cell to let the target cell determine user access, such as the terminal sends a radio resource control reconfiguration complete (Radio Resource Control ReconfigurationComplete, RRCReconfigurationComplete) message.

In the embodiment of the disclosure, information for determining that the user access/terminal confirms access to the target cell is referred to as first information.

In one implementation of the embodiment of the disclosure, the resource used for transmitting the first information is CG PUSCH resource of the target cell. If the primary transmission fails, the first information can be sent to the target cell by using CG PUSCH resources of the target cell in a repeated transmission mode. How to control the power of transmitting the first information/the transmission power of configuring the CG PUSCH resources of the target cell, so as to ensure the success rate of the first information transmission is a problem to be solved.

In view of this, an embodiment of the present disclosure provides a power control method for transmitting first information to a target cell. Based on the power control method provided by the embodiment of the disclosure, first information is sent to the target cell to access the target cell, so that cell switching is completed.

Fig. 2 is an interactive schematic diagram of a power control method shown in accordance with an embodiment of the present disclosure. As shown in fig. 2, an embodiment of the present disclosure relates to a power control method, which includes:

in step S2101, the terminal receives pre-configuration information of the network.

In some embodiments, each candidate of pre-configuration information is sent for the terminal.

In some embodiments, the access network device sends configuration information to the terminal. Optionally, the access network device sends a radio resource control (Radio Resource Control, RRC) message to the terminal for pre-configuration of the candidate cells. For example, measurement reference signals for each candidate cell are pre-configured for the user, the user measures random access resources of the TA, etc.

In some embodiments, CG PUSCH resources of each candidate cell are configured for sending access messages during handover. .

In step S2102, the terminal sends a first report.

In some embodiments, the terminal sends a first report to the serving cell.

A serving cell may be understood, for example, as a network device (e.g., an access network device) to which the serving cell belongs

It should be noted that, the terminal sending the first report to the serving cell may be understood that the terminal sending the first report to a network device (e.g., an access network device) to which the serving cell belongs.

In some embodiments, the serving cell receives a first report sent by the terminal.

The first report sent by the serving cell receiving terminal may be understood as a first report sent by the terminal received by a network device (e.g., an access network device) to which the serving cell belongs.

In some embodiments, the serving cell receives the first report.

In some embodiments, the serving cell receives a first report from the terminal.

In some embodiments, the first report is for reporting beam measurements of one or more candidate cells.

In some embodiments, the first report is used to report beam measurements of the serving cell and one or more candidate cells.

In step S2103, the serving cell determines whether or not to perform cell handover.

In some embodiments, the serving cell determines whether to perform a cell handover based on the first report.

In some embodiments, the serving cell determines that a cell handover is required based on the first report and selects a target cell for the handover from among the candidate cells.

In step S2104, the serving cell transmits a first instruction.

In some embodiments, the serving cell sends a first instruction to the terminal.

It should be noted that, the serving cell sends the first instruction to the terminal, which may be understood that the network device (e.g., the access network device) to which the serving cell belongs sends the first instruction to the terminal.

It may be understood that the terminal receives the first instruction sent by the serving cell, and it may be understood that the terminal receives the first instruction sent by the network device (e.g., the access network device) to which the serving cell belongs.

In some embodiments, the terminal receives the first instruction.

In some embodiments, the first instruction is for instructing the terminal to perform a cell handover.

In some embodiments, the first instruction is a switch instruction.

In some embodiments, the name of the first instruction is not limited, and is, for example, "cell handover instruction (cell switch command)", "handover instruction information", or the like.

In step S2105, the terminal determines a first power.

In some embodiments, the terminal determines the first power, which may be understood as the terminal determines the first power to send the first information to a network device (e.g. an access network device) to which the target cell belongs.

In some embodiments, the first power is used for the terminal to send the first information to the target cell.

In some embodiments, the first information is used to indicate that the target cell terminal is to be handed over to the target cell.

In some embodiments, the target cell is a target cell selected by the serving cell from one or more candidate cells based on respective beam measurements for cell handover.

In some embodiments, the terminal may repeat transmission of the first information to the target cell if one transmission fails.

In some embodiments, the first power is determined based on a number of repeated transmissions. The name of the retransmission is not limited, and may be, for example, "retransmission".

In some embodiments, the number of repeated transmissions is the number of repeated transmissions of the first information to the target cell. Optionally, the number of repeated transmissions is the number of times that the terminal repeatedly sends the first information to the target cell based on the scheduling-free physical uplink shared channel. The scheduling-free physical uplink shared channel may also be referred to as CG PUSCH.

In some embodiments, the first power may be gradually increased in the retransmission of the first information.

By way of example, a gradual increase in the first power is also understood a stepwise increase in the first power, a stepwise increase in the first power.

It can be appreciated that retransmitting the first information uses CG PUSCH resources.

In some embodiments, the first power is increased by a first power magnitude for each increase in the number of repeated transmissions.

In some embodiments, the name of the first power amplitude is not limited, and is, for example, "power boost amplitude", "power boost step size", and so on.

In some embodiments, the first power magnitude may be configured for the terminal by the network device.

In some embodiments, the first power is less than or equal to the maximum transmission power.

In some embodiments, the maximum transmission power may be referred to as a maximum power, a maximum power limit, or the like.

In some embodiments, the first power is determined based on a number of retransmissions, a power ramp-up step size, and a power control parameter.

In some embodiments, the power step size is the same as the first power amplitude.

In some embodiments, the power control parameter includes path loss.

In some embodiments, path loss represents the loss of a signal during transmission, which may also be referred to as power loss, path consumption, etc.

In some embodiments, open loop power control is used, where open loop power control is understood to be a power control mode without feedback or with neglect of feedback, i.e. the network does not dynamically adjust the next uplink transmission power according to the uplink transmission of the user.

In some embodiments, the first power may be determined by the following equation:

P＝min{P _c,max ,P _target +α×PL+f(l)+Δ}

wherein P may represent a first power, P _c,max The maximum transmission power, PL, α, f (l), and Δ are respectively defined as a maximum transmission power, a path loss, a weight factor for adjusting the path loss, a closed-loop adjustment value, and other adjustment amounts, and a transmission bandwidth modulation coding scheme.

Wherein P is _target ＝P ₀ +NumberRetransmission×RampingSte,P ₀ Indicating the target received power, (umberRetransmission indicates the number of repeated transmissions, and rammingstep indicates the power ramp-up step size).

In some embodiments, the closed loop control closed loop index parameters in the CG PUSCH are ignored when determining the first power. Alternatively, the closed-loop adjustment value f (l) =0 at this time is directly specified.

In some embodiments, the path loss is determined based on a path loss reference signal. It is understood that the path loss reference signal is a reference signal for measuring path loss, which may also be referred to as a path loss measurement signal, a reference signal, or the like.

In some embodiments, the path loss reference signal is determined based on the first beam. The first beam is used for retransmitting first information, and the path loss reference signal is a synchronization signal block (Synchronization Signal and PBCH block, SSB) associated with the beam.

Illustratively, the synchronization signal block is also referred to as a "synchronization signal/physical broadcast channel signal block".

In some embodiments, the path loss reference signal is a first synchronization signal block corresponding to the first beam.

In some embodiments, the first beam is the beam selected for beam measurements on the target cell.

In some embodiments, the path loss reference signal is determined based on the second information. The second information is used for indicating the terminal to perform cell switching and indicating a transmission configuration indication (Transmission Configuration Indicator, TCI) state (state) of the target cell, and the path loss reference signal is a second synchronization signal block associated with the transmission configuration indication state.

In some embodiments, the second information may be understood as a cell switch instruction, and the path loss reference signal is associated with an SSB in the cell switch instruction indicating a transmission configuration indication state TCI state of the target cell.

In some embodiments, if the TCI state is associated with a time-frequency tracking reference signal (Tracking Reference Signal, TRS), the path loss reference signal is the SSB associated with the TRS.

In some embodiments, if the selected beam is not changed in retransmission of the CG PUSCH, the first power may be gradually increased based on the number of repeated transmissions.

In some embodiments, the number of retransmissions is determined based on a counter. Optionally, when the counter initial value count=0, the number of repeated transmissions number=count; when the counter initial value count=1, numberreconnsmssion=count-1.

In some embodiments, the first power may be determined by:

P＝min{P _c,max ,P ₀ +α×PL+Δ+NumberRetransmission×RampingStep}

wherein P may represent a first power, P _c,max Representing maximum transmission power, P ₀ The target received power is represented by PL, the path loss, the weight factor for adjusting the path loss, Δ, other adjustment amounts related to the transmission bandwidth modulation coding scheme and the like, the number retransmission represents the number of repeated transmissions, and the ramp step represents the power ramp-up step.

In some embodiments, the retransmission counter number is reset in case the beam used by the terminal to repeatedly transmit the first information to the target cell changes.

In some embodiments, the network device may configure the power boost step size to the terminal in advance.

In some embodiments, the increased power does not exceed the power limit.

In some embodiments, if the selected beam is unchanged during retransmission of the CG PUSCH, the CG-PUSCH transmission power may be gradually increased.

In step S2106, the terminal transmits first information to the target cell.

In some embodiments, the first information is transmitted based on a first power.

In some embodiments, the target cell receives first information sent by the terminal.

The first information sent by the target cell receiving terminal to the target cell may be understood as the first information sent by the terminal received by the network device (e.g., access network device) to which the target cell belongs.

In some embodiments, the first information is used to indicate a target cell to which the terminal is to be handed over.

In some embodiments, the first information is determination information.

In some embodiments, the first information is sent to the target cell if the terminal receives the first instruction.

In some embodiments, the first information is sent to the target cell in case the serving cell instructs the terminal to perform a cell handover.

In some embodiments, the name of the first information is not limited, and is, for example, "first uplink data", "acknowledgement message", "acknowledgement handover message", etc.

In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "instruction", "command", "channel", "parameter", "field", "symbol", "codebook", "code word", "code point", "bit", "data", "program", "chip", and the like may be replaced with each other.

In some embodiments, the terms "codebook", "codeword", "precoding matrix" and the like may be interchanged. For example, a codebook may be a collection of one or more codewords/precoding matrices.

In some embodiments, terms such as "uplink," "physical uplink," and the like may be interchanged, terms such as "downlink," "physical downlink," and the like may be interchanged, terms such as "side," "side link," "side communication," "side link," "direct link," and the like may be interchanged.

In some embodiments, terms such as "downlink control information (downlink control information, DCI)", "Downlink (DL) assignment", "DL DCI", "Uplink (UL) grant", "UL DCI", and the like may be replaced with each other.

In some embodiments, terms of "physical downlink shared channel (physical downlink shared channel, PDSCH)", "DL data", etc. may be interchanged, and terms of "physical uplink shared channel (physical uplink shared channel, PUSCH)", "UL data", etc. may be interchanged.

In some embodiments, terms such as "radio," "wireless," "radio access network," "RAN," and "RAN-based," may be used interchangeably.

In some embodiments, terms such as "search space", "search space set", "search space configuration (search space configuration)", "search space set configuration (search space set configuration)", "control resource set (control resource set, CORESET)", "CORESET configuration", and the like may be interchanged.

In some embodiments, terms of "synchronization signal (synchronization signal, SS)", "synchronization signal block (synchronization signal block, SSB)", "Reference Signal (RS)", "pilot signal", and the like may be replaced with each other.

In some embodiments, terms such as "time of day," "point of time," "time location," and the like may be interchanged, and terms such as "duration," "period," "time window," "time," and the like may be interchanged.

In some embodiments, terms of "component carrier (component carrier, CC)", "cell", "frequency carrier (frequency carrier)", "carrier frequency (carrier frequency)", and the like may be interchanged.

In some embodiments, terms such as "Resource Block (RB)", "physical resource block (physical resource block, PRB)", "subcarrier group (SCG)", "resource element group (resource element group, REG)", "PRB pair", "RB pair", "Resource Element (RE)", "subcarrier (sub-carrier)", and the like may be substituted for each other.

In some embodiments, the terms wireless access scheme (wireless access scheme), waveform (waveform), etc. may be interchanged.

In some embodiments, "precoding", "precoder", "weight", "precoding weight", "quasi co-location", "QCL", "transmission configuration indication (transmission configuration indication, TCI) state", "spatial relation", "spatial filter (spatial domain filter)", "transmit power (transmission power)", "phase rotation", "antenna port group (antenna port group)", "layer number (the number of layers)", "rank", "resource set", "beam width", "beam angle (beam angular degree)", "antenna port", "antenna element", and the like.

In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "transmission time interval (transmission time interval, TTI)" and the like may be substituted for each other.

In some embodiments, "acquire," "obtain," "receive," "transmit," "bi-directional transmit," "send and/or receive" may be used interchangeably and may be interpreted as receiving from other principals, acquiring from protocols, acquiring from higher layers, processing itself, autonomous implementation, etc.

In some embodiments, terms such as "send," "transmit," "report," "send," "transmit," "bi-directional," "send and/or receive," and the like may be used interchangeably.

In some embodiments, terms such as "specific (specific)", "predetermined", "preset", "set", "indicated", "certain", "arbitrary", "first", and the like may be replaced with each other, and "specific a", "predetermined a", "preset a", "set a", "indicated a", "certain a", "arbitrary a", "first a" may be interpreted as a predetermined in a protocol or the like, may be interpreted as a obtained by setting, configuring, or indicating, or the like, may be interpreted as specific a, certain a, arbitrary a, or first a, or the like, but are not limited thereto.

In some embodiments, the determination or judgment may be performed by a value (0 or 1) expressed in 1 bit, may be performed by a true-false value (boolean) expressed in true (true) or false (false), or may be performed by a comparison of values (e.g., a comparison with a predetermined value), but is not limited thereto.

In some embodiments, "not expected to receive" may be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on data or the like after the data or the like is received; "not expected to transmit" may be interpreted as not transmitting, or may be interpreted as transmitting but not expecting the receiver to respond to the transmitted content.

The communication method according to the embodiment of the present disclosure may include at least one of step S2101 to step S2106. For example, step S2105 may be implemented as a separate embodiment, step S2106 may be implemented as a separate embodiment, step S2105+s2106 may be implemented as a separate embodiment, step S2104+step S2105+step S2106 may be implemented as a separate embodiment, step S2103+step S2104+step S2105+step S2106 may be implemented as a separate embodiment, and step S2101+step S2102+step S2103+step S2104+step S2105+step S2106 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, steps S2105, S2106 may be performed in exchange for sequence or simultaneously, and steps xx, xx may be performed in exchange for sequence or simultaneously.

In some embodiments, step S2102, step S2103, step S2104, step S2105, step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2101, step S2103, step S2104, step S2105, step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2101, step S2102, step S2104, step S2105, step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2101, step S2102, step S2103, step S2105, step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2101, step S2102, step S2103, step S2104, step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2101, step S2102, step S2103, step S2104, step S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other alternative implementations described before or after the corresponding description of fig. 2.

In some embodiments, fig. 3A is a flow diagram illustrating a power control method according to an embodiment of the present disclosure. As shown in fig. 3A, an embodiment of the present disclosure relates to a power control method, the method including:

step S3101, pre-configuration information.

Alternative implementations of step S3101 may refer to alternative implementations of step S2101 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

Step S3102, a first report is sent.

Alternative implementations of step S3102 may refer to alternative implementations of step S2102 in fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described herein.

In step S3103, a first instruction is acquired.

Alternative implementations of step S3103 may refer to alternative implementations of step S2104 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

In step S3104, a first power is determined.

Alternative implementations of step S3104 may refer to alternative implementations of step S2105 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

Step S3105, the first information is transmitted.

Alternative implementations of step S3105 may refer to alternative implementations of step S2106 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

The communication method according to the embodiment of the present disclosure may include at least one of step S3101 to step S3105. For example, step S3104 may be implemented as a separate embodiment, step S3105 may be implemented as a separate embodiment, step S31014+step S3105 may be implemented as a separate embodiment, step S31013+step S31014+step S3105 may be implemented as a separate embodiment, step S3102+step S3103+step S3104+step S3105 may be implemented as a separate embodiment, and step S3101+step S3102+step S3103+step S3104+step S3105 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, steps S3104, S3105 may be performed in exchange for sequence or simultaneously, steps S3102, S3103 may be performed in exchange for sequence or simultaneously, and steps S3101, S3102 may be performed in exchange for sequence or simultaneously.

In some embodiments, step S3101, step S3102, step S3103, step S3104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S3101, S3102, S3103, S3105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3102, step S3103, step S3104, step S3105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3101, step S3103, step S3104, step S3105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3101, step S3102, step S3104, step S3105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

Fig. 3B is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure. As shown in fig. 3B, an embodiment of the present disclosure relates to a power control method, the method including:

in step S3201, a first instruction is acquired.

Alternative implementations of step S3201 may refer to step S2104 of fig. 2, alternative implementations of step S3103 of fig. 3A, and other relevant parts in the embodiments related to fig. 2 and fig. 3A, which are not described herein.

In step S3202, a first power is determined.

Alternative implementations of step S3202 may refer to step S2105 of fig. 2, alternative implementations of step S3104 of fig. 3A, and other relevant parts in the embodiments related to fig. 2 and fig. 3A, which are not described herein.

Step S3203, the first information is transmitted.

Alternative implementations of step S3203 may refer to step S2106 of fig. 2, alternative implementations of step S3105 of fig. 3A, and other relevant parts in the embodiments related to fig. 2 and fig. 3A, which are not described herein.

The communication method according to the embodiment of the present disclosure may include at least one of step S3201 to step S3203. For example, step S3202 may be implemented as a separate embodiment, step S3203 may be implemented as a separate embodiment, step S3202+s3203 may be implemented as a separate embodiment, and step S3201+s3202+s3203 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, steps S3201, S3202 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S3201, S3203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S3202, S3203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In the disclosed embodiment, step S3202 may be combined with S3101-S3103 of FIG. 3A, and step S3203 may be combined with S3101-S3104 of FIG. 3A.

Fig. 3C is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure. As shown in fig. 3C, an embodiment of the present disclosure relates to a power control method, the method including:

in step S3301, a first power is determined.

Alternative implementations of step S3301 may refer to step S2105 of fig. 2, alternative implementations of step S3104 of fig. 3A, step S3202 of fig. 3B, and other relevant parts of the embodiments related to fig. 2, 3A, and 3B, which are not described herein.

In step S3302, the first information is transmitted.

Alternative implementations of step S3302 may refer to step S2106 of fig. 2, alternative implementations of step S3105 of fig. 3A, step S3203 of fig. 3B, and other relevant parts of the embodiments related to fig. 2, 3A, and 3B, which are not described herein.

In an alternative embodiment, step xx includes a lower level scheme (or a median scheme) step x, and an alternative implementation manner of step x may refer to step xx in fig. 2, step xx in fig. 3A, step xx in fig. 3B, an alternative implementation manner of step xx in fig. 3B, and other relevant parts in the embodiments related to fig. 2, 3A and 3B, which are not described herein again.

In some embodiments, the terminal determines a first power, where the first power is determined based on a number of repeated transmissions, where the number of repeated transmissions is a number of times the terminal repeatedly sends first information to the target cell based on the scheduling-free physical uplink shared channel, where the first information is used to instruct the terminal to confirm handover to the target cell; and the first power is used for transmitting the first information to the target cell by the terminal.

In some embodiments, the first power and the number of repeated transmissions satisfy the following relationship: the first power is increased by a first power magnitude for each increase in the number of repeated transmissions.

In some embodiments, the power control parameter includes path loss; the path loss is determined based on a path loss reference signal, which is determined in at least one of the following ways: determining based on a first beam, wherein the first beam is used for retransmitting first information, the path loss reference signal is a first synchronization signal block corresponding to the first beam, and the first beam is a beam selected for carrying out beam measurement on a target cell; and determining based on second information, wherein the second information is used for indicating the terminal to perform cell switching and indicating the transmission configuration indication state of the target cell, and the path loss reference signal is a second synchronous signal block associated with the transmission configuration indication state.

In some embodiments, the number of retransmissions is determined based on a counter, wherein when the counter initial value count=0, the number of retransmissions number=count; when the counter initial value count=1, numberreconnsmssion=count-1.

In some embodiments, the method further comprises: the terminal resets the number of retransmission counters by changing the beam used for repeatedly transmitting the first information to the target cell.

In some embodiments, the method further comprises: based on the first power, first information is sent to the target cell.

Fig. 4A is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure. As shown in fig. 4A, an embodiment of the present disclosure relates to a power control method, the method including:

in step S4101, a first report is acquired.

Alternative implementations of step S4101 may refer to alternative implementations of step S2102 in fig. 2, alternative implementations of step S3102 in fig. 3A, and other relevant parts in the embodiments related to fig. 2 and 3A, which are not described herein.

Step S4102, determines whether or not to perform cell switching.

Alternative implementations of step S4102 may refer to alternative implementations of step S2103 of fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described here again.

Step S4103, a first instruction is sent.

Alternative implementations of step S4103 may refer to alternative implementations of step S2104 of fig. 2, alternative implementations of step S3103 of fig. 3A, and other relevant parts in the embodiments related to fig. 2 and 3A, which are not described here again.

In step S4104, first information is acquired.

Alternative implementations of step S4104 may refer to alternative implementations of step S2106 of fig. 2, alternative implementations of step S3105 of fig. 3A, and other relevant parts in the embodiments related to fig. 2 and 3A, which are not described here again.

The communication method according to the embodiment of the present disclosure may include at least one of step S4101 to step S4104. For example, step S4103 may be implemented as a separate embodiment, step S4104 may be implemented as a separate embodiment, step S4103+step S4104 may be implemented as a separate embodiment, step S4102+step S4103+step S4104 may be implemented as a separate embodiment, and step S4101+step S4102+step S4103+step S4104 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, steps S4102, S4103, S4104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

In some embodiments, steps S4101, S4103, S4104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

In some embodiments, steps S4101, S4102, S4104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

Fig. 4B is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure. As shown in fig. 4B, an embodiment of the present disclosure relates to a power control method, the method including:

step S4201, it is determined whether to perform cell switching.

Alternative implementations of step S4201 may refer to step S2103 of fig. 2, step S4102 of fig. 4A, and other relevant parts of the embodiments related to fig. 2 and fig. 4A, which are not described herein.

In step S4202, a first instruction is transmitted.

Alternative implementations of step S4202 may be referred to as step S2104 of fig. 2A, step S3103 of fig. 3A, alternative implementations of step S3201 of fig. 3B, and step S4103 of fig. 4A, and other relevant parts in the embodiments related to fig. 2 and fig. 3A, 3B, and fig. 4A, which will not be described here again.

In step S4203, the first information is acquired.

Alternative implementations of step S4203 may be referred to as step S2106 of fig. 2A, alternative implementations of step S3105 of fig. 3A, step S3203 of fig. 3B, and step S4104 of fig. 4A, and other relevant parts of the embodiments related to fig. 2, 3A, 3B, and 4A, which are not described herein.

The communication method according to the embodiment of the present disclosure may include at least one of step S4201 to step S4203. For example, step S4202 may be implemented as a separate embodiment, and step S4203 may be implemented as a separate embodiment, but is not limited thereto.

In some embodiments, steps S4201, S4202 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S4201, S4203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S4202, S4203 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In the disclosed embodiment, step S4202 may be combined with steps S4101, S4102, S4104 of fig. 4A, and step S4203 may be combined with steps S4101-S4103 of fig. 4A.

Fig. 4C is a flow chart diagram illustrating a power control method according to an embodiment of the present disclosure. As shown in fig. 4C, an embodiment of the present disclosure relates to a power control method, the method including:

step S4301, a first instruction is sent.

Alternative implementations of step S4201 may be referred to as step S2104 of fig. 2A, alternative implementations of step S3103 of fig. 3A, step S3201 of fig. 3B, step S4101 of fig. 4A, and step S4202 of fig. 4B, and other relevant parts of the embodiments related to fig. 2, 3A, 3B, and 4A and fig. 4B are not described herein.

In step S4302, first information is acquired.

Alternative implementations of step S4201 may be referred to as step S2106 of fig. 2A, alternative implementations of step S3105 of fig. 3A, step S3203 of fig. 3B, step S3302 of fig. 3C, step S4103 of fig. 4A, and step S4203 of fig. 4B, and other relevant parts of the embodiments of fig. 2 and 4A related to fig. 4B, which are not described herein.

In some embodiments, the serving cell receives first information, where the first information is sent by the terminal to the target cell based on a first power, where the first power is determined based on a number of repeated transmissions, where the number of repeated transmissions is a number of times the terminal repeatedly sends the first information to the target cell based on the scheduling-free physical uplink shared channel; the first information is used for indicating the terminal to confirm the switching to the target cell.

In some embodiments, the power control parameter includes path loss; the path loss is determined based on a path loss reference signal, which is determined in at least one of the following ways: determining based on a first beam, wherein the first beam is used for retransmitting first information, the path loss reference signal is a first synchronous signal block of a reference signal corresponding to the first beam, and the first beam is a beam selected for carrying out beam measurement on a target cell; and determining based on second information, wherein the second information is used for indicating the terminal to perform cell switching and indicating the transmission configuration indication state of the target cell, and the path loss reference signal is a second synchronous signal block associated with the transmission configuration indication state.

In some embodiments, the number of retransmissions is determined based on a counter, wherein when the counter initial value count=0, the number of retransmissions number=count; when the counter initial value count=1, numberreconnsmssion=count-1

In some embodiments, the count value of the counter is less than or equal to a pre-configured or predefined counter maximum value.

Fig. 5 is an interactive schematic diagram of a power control method shown in accordance with an embodiment of the present disclosure. As shown in fig. 5, an embodiment of the present disclosure relates to a power control method, which includes:

in step S5101, the terminal determines a first power.

Alternative implementations of step S5101 may refer to step S2105 of fig. 2A, step S3104 of fig. 3A, alternative implementations of step S3202 of fig. 3B, step S3301 of fig. 3C, and other relevant parts in the embodiments related to fig. 2, 3A, 3B, and 3C, which are not described herein.

In step S5102, the terminal transmits first information.

Alternative implementations of step S5102 may be referred to as step S2106 of fig. 2A, step S3105 of fig. 3A, alternative implementations of step S3203 of fig. 3B, step S3302 of fig. 3C, step S4104 of fig. 4A, step S4203 of fig. 4B, and step S4302 of fig. 4C, and other relevant parts of the embodiments related to fig. 2, 3A, 3B, 3C, 4A, 4B, and 4C, which are not described herein.

In some embodiments, the method may include the method described in the embodiments of the communication system side, the terminal side, the network device side, and so on, which are not described herein.

The embodiment also provides a power control method, which is used for determining the transmission power of the CG PUSCH for sending the acknowledgement message to the target cell in the handover process.

In some embodiments, the power control method includes the following: and a transmission power calculation mode of the CG PUSCH and a CG PUSCH power lifting.

In some embodiments, the transmission power calculation formula of CG PUSCH satisfies the following relationship:

P＝min{P _c,max ,P _target +α×PL+f(l)+Δ}，

wherein P is _target ＝P ₀ +NumberRetransmission×RampingSte；

Or p=min { P _c,max ,P ₀ +α×PL+Δ+NumberRetransmission×RampingStep}；

In some embodiments, the transmission power calculation manner of the CG PUSCH includes at least one of the following:

-a) manner of parameter determination

-B) path loss calculation

In some embodiments, the parameter determination means includes: only open loop power control is performed, and the user ignores closed loop index parameters in the existing CG PUSCH; or directly specifies the closed-loop adjustment value f=0 at this time. Is configured by the network as is the SDT CG PUSCH.

In some embodiments, the path loss calculation includes at least one of:

-a) configuring ss-PBCH-BlockPower for calculating the path loss while configuring the measurement reference signal SSB for the user.

-b) the path loss reference signal is SSB associated with the TCI state indicated for the user in cell switch command, if the SSB is associated with a TRS, the SSB is associated with the TRS.

-c) if it is a retransmission of CG PUSCH, a new beam corresponding SSB selected for the user.

In some embodiments, CG PUSCH power boosting includes at least one of:

1) If the selected beam has no transmission change in the retransmission of the CG PUSCH, the user can gradually increase the transmission power of the CG-PUSCH, and the expression satisfies the following relationship:

P＝min{P _c,max ,P ₀ +α×PL+Δ+NumberRetransmission×RampingStep}

wherein P can represent the transmission power of CG PUSCH, P _c,max Representing maximum transmission power, P ₀ The target received power is represented by PL, the path loss, the weight factor for adjusting the path loss, delta, the other adjustment amount related to the transmission bandwidth modulation coding scheme and the like, the number retransmission represents the number of repeated transmissions, and the ramp step represents the power ramp step.

2) The lead-in counter determines the number of retransmissions and if the transport beam is reselected, the counter is set to 1.

3) The ramp step of the power ramp is configured to the user in advance.

4) The power after the increase cannot exceed the power limit.

In the embodiments of the present disclosure, some or all of the steps and alternative implementations thereof may be arbitrarily combined with some or all of the steps in other embodiments, and may also be arbitrarily combined with alternative implementations of other embodiments.

The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods, for example, an apparatus is provided, where the apparatus includes a unit or a module for implementing each step performed by the terminal in any of the above methods. For another example, another apparatus is also proposed, which includes a unit or module configured to implement steps performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

It should be understood that the division of each unit or module in the above apparatus is merely a division of a logic function, and may be fully or partially integrated into one physical entity or may be physically separated when actually implemented. Furthermore, units or modules in the apparatus may be implemented in the form of processor-invoked software: the device comprises, for example, a processor, the processor being connected to a memory, the memory having instructions stored therein, the processor invoking the instructions stored in the memory to perform any of the methods or to perform the functions of the units or modules of the device, wherein the processor is, for example, a general purpose processor, such as a central processing unit (Central Processing Unit, CPU) or microprocessor, and the memory is internal to the device or external to the device. Alternatively, the units or modules in the apparatus may be implemented in the form of hardware circuits, and part or all of the functions of the units or modules may be implemented by designing hardware circuits, which 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 units or modules are implemented by designing the logic relationships of elements in the circuit; for another example, in another implementation, the above hardware circuit may be implemented by a programmable logic device (programmable logic device, PLD), for example, a field programmable gate array (Field Programmable Gate Array, FPGA), which may include a large number of logic gates, and the connection relationship between the logic gates is configured by a configuration file, so as to implement the functions of some or all of the above units or modules. All units or modules of the above device may be realized in the form of invoking software by a processor, or in the form of hardware circuits, or in part in the form of invoking software by a processor, and in the rest in the form of hardware circuits.

In the disclosed embodiments, the processor is a circuit with signal processing capabilities, and in one implementation, the processor may be a circuit with instruction reading and running capabilities, such as a central processing unit (Central Processing Unit, CPU), microprocessor, graphics processor (graphics processing unit, GPU) (which may be understood as a microprocessor), or digital signal processor (digital signal processor, DSP), etc.; in another implementation, the processor may implement a function through a logical relationship of hardware circuits that are fixed or reconfigurable, e.g., a hardware circuit implemented as an application-specific integrated circuit (ASIC) or a programmable logic device (programmable logic device, PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads the configuration document, and the process of implementing the configuration of the hardware circuit may be understood as a process of loading instructions by the processor to implement the functions of some or all of the above units or modules. Furthermore, hardware circuits designed for artificial intelligence may be used, which may be understood as ASICs, such as neural network processing units (Neural Network Processing Unit, NPU), tensor processing units (Tensor Processing Unit, TPU), deep learning processing units (Deep learning Processing Unit, DPU), etc.

Fig. 6A is a schematic structural diagram of a terminal according to an embodiment of the present disclosure. As shown in fig. 6A, the terminal 6100 may include: at least one of a processing module 6101, a transceiver module 6102, and the like. In some embodiments, the processing module is configured to determine a first power, where the first power is determined based on a number of repeated transmissions, where the number of repeated transmissions is a number of times the terminal repeatedly sends first information to the target cell based on the scheduling-free physical uplink shared channel, and the first information is used to instruct the terminal to confirm handover to the target cell. The transceiver module is configured to send first information to a target cell based on the first power. Optionally, the transceiver module is configured to perform at least one of the communication steps (e.g., step S2102, step S2104, step S2106, but not limited to, the sending and/or receiving performed by the terminal in any of the above methods, which is not described herein. Optionally, the processing module is configured to perform at least one of the other steps (e.g. step S2101, step S2105, but not limited thereto) performed by the terminal in any of the above methods, which is not described herein.

Fig. 6B is a schematic structural diagram of a network device according to an embodiment of the present disclosure. As shown in fig. 6B, the network device 6200 may include: a transceiver module 6201, configured to receive first information, where the first information is sent by a terminal to a target cell based on first power, where the first power is determined based on a number of repeated transmissions, where the number of repeated transmissions is a number of times that the terminal repeatedly sends the first information to the target cell based on a scheduling-free physical uplink shared channel; the first information is used for indicating the terminal to confirm switching to a target cell. Optionally, the transceiver module is configured to perform at least one of the communication steps (such as, but not limited to, step S2102, step S2104, and step S2106) of sending and/or receiving performed by the terminal in any of the above methods, which is not described herein.

In some embodiments, the transceiver module may include a transmitting module and/or a receiving module, which may be separate or integrated. Alternatively, the transceiver module may be interchangeable with a transceiver.

In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the plurality of sub-modules perform all or part of the steps required to be performed by the processing module, respectively. Alternatively, the processing module may be interchanged with the processor.

Fig. 7A is a schematic structural diagram of a communication device 7100 according to an embodiment of the present disclosure. The communication device 7100 may be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user device, etc.), a chip system, a processor, etc. that supports the network device to implement any of the above methods, or a chip, a chip system, a processor, etc. that supports the terminal to implement any of the above methods. The communication device 7100 may be used to implement the methods described in the above method embodiments, and may be referred to in particular in the description of the above method embodiments.

As shown in fig. 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a special-purpose processor, etc., and may be, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process data for the programs. The communication device 7100 is for performing any of the above methods.

In some embodiments, the communication device 7100 also includes one or more memories 7102 for storing instructions. Alternatively, all or part of the memory 7102 may be external to the communication device 7100.

In some embodiments, the communication device 7100 also includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs at least one of the communication steps (e.g., but not limited to, step S2102, step S2104, step S2106) such as transmission and/or reception in the above-described method, and the processor 7101 performs at least one of the other steps (e.g., but not limited to, step S2101, step S2103, step S2105).

In some embodiments, the transceiver may include a receiver and/or a transmitter, which may be separate or integrated. Alternatively, terms such as transceiver, transceiver unit, transceiver circuit, etc. may be replaced with each other, terms such as transmitter, transmitter circuit, etc. may be replaced with each other, and terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, an interface circuit 7104 is coupled to the memory 7102, the interface circuit 7104 being operable to receive signals from the memory 7102 or other device, and to transmit signals to the memory 7102 or other device. For example, the interface circuit 7104 may read an instruction stored in the memory 7102 and send the instruction to the processor 7101.

The communication device 7100 in the above embodiment description may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by fig. 7A. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be: 1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem; (2) A set of one or more ICs, optionally including storage means for storing data, programs; (3) an ASIC, such as a Modem (Modem); (4) modules that may be embedded within other devices; (5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like; (6) others, and so on.

Fig. 7B is a schematic structural diagram of a chip 7200 according to an embodiment of the disclosure. For the case where the communication device 7100 may be a chip or a chip system, reference may be made to a schematic structural diagram of the chip 7200 shown in fig. 7B, but is not limited thereto.

The chip 7200 includes one or more processors 7201, the chip 7200 being configured to perform any of the above methods.

In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, an interface circuit 7202 is coupled to the memory 7203, the interface circuit 7202 may be configured to receive signals from the memory 7203 or other device, and the interface circuit 7202 may be configured to transmit signals to the memory 7203 or other device. For example, the interface circuit 7202 may read instructions stored in the memory 7203 and send the instructions to the processor 7201.

In some embodiments, the interface circuit 7202 performs at least one of the communication steps (e.g., but not limited to step S2102, step S2104, step S2106) of the above-described method, and the processor 7201 performs at least one of the other steps (e.g., but not limited to step S2101, step S2103, step S2105).

In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc. may be interchanged.

In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or a portion of memory 7203 may be external to chip 7200.

The modules and/or devices described in the embodiments of the virtual device, the physical device, the chip, etc. may be arbitrarily combined or separated according to circumstances. Alternatively, some or all of the steps may be performed cooperatively by a plurality of modules and/or devices, without limitation.

The present disclosure also proposes a storage medium having stored thereon instructions that, when executed on a communication device 7100, cause the communication device 7100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Alternatively, the storage medium described above is a computer-readable storage medium, but is not limited thereto, and it may be a storage medium readable by other devices. Alternatively, the above-described storage medium may be a non-transitory (non-transitory) storage medium, but is not limited thereto, and it may also be a transitory storage medium.

The present disclosure also proposes a program product which, when executed by a communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the above-described program product is a computer program product.

The present disclosure also proposes a computer program which, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A method of power control, comprising:

the method comprises the steps that a terminal determines first power, wherein the first power is determined based on repeated transmission times, and the repeated transmission times are times when the terminal repeatedly sends first information to a target cell based on a scheduling-free physical uplink shared channel CG (physical uplink shared channel) PUSCH, and the first information is used for indicating the terminal to confirm switching to the target cell;

And the first power is used for sending the first information to a target cell by the terminal.

2. The method of claim 1, wherein the first power and the number of repeated transmissions satisfy the following relationship:

and each time the number of repeated transmission times is increased by a first number, the first power is increased by a first power amplitude, and the first power is smaller than or equal to the maximum transmission power.

3. The method according to claim 1 or 2, wherein the first power is determined based on a number of repeated transmissions, a power ramp-up step size, and a power control parameter.

4. A method according to claim 3, wherein the power control parameter comprises path loss;

the path loss is determined based on a path loss reference signal, and the path loss reference signal is determined by at least one of the following modes:

determining based on a first beam, wherein the first beam is used for retransmitting the first information, the path loss reference signal is a first synchronization signal block corresponding to the first beam, and the first beam is a beam selected for carrying out beam measurement on the target cell;

and determining based on second information, wherein the second information is used for indicating the terminal to perform cell switching and indicating a transmission configuration indication state of a target cell, and the path loss reference signal is a second synchronous signal block associated with the transmission configuration indication state.

5. The method according to any one of claims 1 to 4, wherein the number of repeated transmissions is determined based on a counter; when the counter initial value count=0, the number of repeated transmissions is equal to the number of times of transmission; when the counter initial value count=1, numberreconnsmssion=count-1.

6. The method of claim 5, wherein the method further comprises:

and the terminal repeatedly sends the first information to the target cell, the wave beam used by the first information is changed, and the repeated transmission counter number is reset.

7. The method of any one of claims 1 to 6, wherein the first power is:

P＝min{P _c,max ,P _target +α×PL+f(l)+Δ}，

wherein P is _target ＝P ₀ +NumberRetransmission×RampingSte；

Or p=min { P _c,max ,P ₀ +α×PL+Δ+NumberRetransmission×RampingStep}；

8. A method of power control, comprising:

the network equipment receives first information, wherein the first information is sent to a target cell by a terminal based on first power, the first power is determined based on repeated transmission times, and the repeated transmission times are times when the terminal repeatedly sends the first information to the target cell based on a scheduling-free physical uplink shared channel;

The first information is used for indicating the terminal to confirm the switching to the target cell.

9. The method of claim 8, wherein the first power and the number of repeated transmissions satisfy the following relationship:

10. The method according to claim 8 or 9, wherein the first power is determined based on a number of repeated transmissions, a power ramp-up step size, and a power control parameter.

11. The method of claim 10, wherein the power control parameter comprises a path loss;

determining based on a first beam, wherein the first beam is used for retransmitting the first information, the path loss reference signal is a first synchronization signal block of a reference signal corresponding to the first beam, and the first beam is a beam selected for carrying out beam measurement on the target cell;

12. The method according to any one of claims 8 to 11, wherein the number of retransmissions is determined based on a counter, wherein when the counter initial value COUNT = 0, the number of retransmissions number = COUNT; when the counter initial value count=1, numberreconnsmssion=count-1.

13. The method according to any of claims 8 to 12, wherein the first power is:

P＝min{P _c,max ,P _target +α×PL+f(l)+Δ}，

wherein P is _target ＝P ₀ +NumberRetransmission×RampingSte；

Or p=min { P _c,max ,P ₀ +α×PL+Δ+NumberRetransmission×RampingStep}；

14. A terminal, comprising:

the processing module is used for determining first power, wherein the first power is determined based on repeated transmission times, the repeated transmission times are times when a terminal repeatedly sends first information to a target cell based on a scheduling-free physical uplink shared channel, and the first information is used for indicating the terminal to confirm switching to the target cell;

and the receiving and transmitting module is used for transmitting the first information to a target cell based on the first power.

15. A network device, comprising:

the receiving and transmitting module is used for receiving first information, the first information is sent to the target cell by the terminal based on first power, the first power is determined based on repeated transmission times, and the repeated transmission times are times when the terminal repeatedly sends the first information to the target cell based on the scheduling-free physical uplink shared channel;

the first information is used for indicating the terminal to confirm switching to a target cell.

16. A terminal, comprising:

one or more processors;

wherein the processor is configured to perform the power control method of any one of claims 1 to 7.

17. A network device, comprising:

one or more processors;

wherein the processor is configured to perform the power control method of any one of claims 8 to 13.

18. A communication system comprising a terminal configured to implement the power control method of any of claims 1 to 7 and a network device configured to implement the power control method of any of claims 8 to 13.

19. A storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the power control method of any one of claims 1 to 7 or claims 8 to 13.