CN116235566A

CN116235566A - Uplink power control method and equipment

Info

Publication number: CN116235566A
Application number: CN202080105657.8A
Authority: CN
Inventors: 胡丹; 张旭; 曲秉玉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2023-06-06
Also published as: CN116235566A8; WO2022067823A1

Abstract

The embodiment of the application provides an uplink power control method and equipment, which relate to the technical field of communication and can control uplink transmission power of terminal equipment and avoid interference of the terminal equipment to other equipment. The specific scheme comprises the following steps: the terminal device may obtain a first power parameter, and determine a first transmission power according to the first power parameter, where the first power parameter includes at least one of: power offset, path loss compensation factor. The terminal device may then transmit the first uplink transmission using the first transmit power.

Description

Uplink power control method and equipment

Technical Field

The embodiment of the application relates to the technical field of electronic equipment, in particular to an uplink power control method and equipment.

Background

In a TD-LTE communication system, the method of uplink power control can be divided into two modes, i.e., closed loop power control and power control. Closed loop power control refers to a decision by a User Equipment (UE) to increase or decrease the transmit signal power by the link quality fed back by the base station. And the power control means that the UE decides the power of the transmission signal according to the fading condition of the received signal.

The uplink channels include a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), a physical uplink control channel (Physical Uplink Control Channel, PUSCH), a physical random access channel (Physical Random Access Channel, PRACH), an uplink signal including a sounding reference signal (Sounding Reference Signal, SRS), and the like. For the power control mode, the power control method of the four uplink channels/signals has the same principle, and the UE can determine the path loss to be compensated through the path loss compensation factor alpha and the downlink path loss estimated value between the base station and the UE, so that the UE can improve the transmitting power, and the receiving reliability of the base station is ensured.

However, when a plurality of transmission points (e.g., a plurality of base stations) cooperate to serve one terminal device, the transmission power of the terminal device determined according to the single-station measurement may cause serious inter-user interference.

Disclosure of Invention

The embodiment of the application provides an uplink power control method, which can control uplink transmitting power of terminal equipment and weaken interference to other terminal equipment.

In a first aspect, an embodiment of the present application provides a method for uplink power control.

The terminal equipment acquires a first power parameter and determines first transmitting power according to the first power parameter, wherein the first power parameter comprises at least one of the following: power offset, path loss compensation factor. The terminal device may then transmit the first uplink transmission using the first transmit power.

Based on the above technical solution, after acquiring the first power parameter (power offset and path loss compensation factor), the terminal device may determine the first transmission power according to the power offset and the path loss compensation factor, so as to ensure that the first transmission power is not excessively large. Therefore, when the terminal equipment adopts the first transmitting power to transmit the first uplink transmission, the interference to other terminal equipment is reduced.

With reference to the first aspect, in one possible design manner, the method for "the terminal device may obtain the first power parameter" includes: the terminal device may receive first indication information indicating the first power parameter.

Thus, the terminal device can obtain the first power parameter according to the first indication information.

With reference to the first aspect, in another possible design manner, the method further includes: the terminal device may obtain first information, where the first information is used to indicate a mapping relationship between the first indication information and the second power parameter. The terminal device may then obtain a medium access control unit, where the medium access control unit is configured to indicate a mapping relationship between the first indication information and the first power parameter.

It can be appreciated that, since the first information is used to indicate the mapping relationship between the first indication information and the second power parameter. Therefore, after the terminal device obtains the first information, the terminal device stores the mapping relation between the first indication information and the second power parameter. And because the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter. Therefore, after the terminal device acquires the media access control unit, the mapping relation between the first indication information and the first power parameter is stored in the terminal device. Thus, when the terminal device acquires the first indication information, the first power parameter can be acquired according to the first indication information.

With reference to the first aspect, in another possible design manner, the method further includes: the terminal device may obtain second information for enabling the terminal device to update the power parameter.

It will be appreciated that the terminal device obtaining the second information enables the terminal device to update the power parameter. That is, when the second power parameter is stored in the terminal device, the terminal device acquires the second information to enable the terminal device to update the second power parameter to the first power parameter. In this way, after the terminal acquires the medium access control unit, the terminal device may update the correspondence between the first indication information and the power parameter.

With reference to the first aspect, in another possible design manner, the method further includes: the terminal device sends the second uplink transmission and/or the third uplink transmission.

With reference to the first aspect, in another possible design manner, the method further includes: the terminal device may obtain the first path loss reference signal and the second path loss reference signal. The second uplink transmission includes a first power headroom report determined from the first path loss reference signal, and the third uplink transmission includes a second power headroom report determined from the second path loss reference signal.

In a second aspect, an embodiment of the present application provides a method for uplink power control.

The network device may send a first power parameter to the terminal device, the first power parameter comprising at least one of: power offset, path loss compensation factor. The network device then receives a first uplink transmission, the transmit power of which is determined based on the first power parameter.

With reference to the second aspect, in one possible design manner, the method for the network device to send the first power parameter to the terminal device includes: the network device may send first indication information to the terminal device, where the first indication information is used to indicate the first power parameter.

With reference to the second aspect, in another possible design manner, the method further includes: the network device may send first information to the terminal device, where the first information is used to indicate a mapping relationship between the first indication information and the second power parameter. And then, the network equipment sends a media access control unit to the terminal equipment, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.

With reference to the second aspect, in another possible design manner, the method further includes: the network device sends second information for enabling the terminal device to update the power parameter.

With reference to the second aspect, in another possible design manner, the method further includes: the network equipment receives the second uplink transmission and acquires one or more measured values of the second uplink transmission;

the network device determines a first power parameter based on one or more measurements of the second uplink transmission.

When the network device receives the second uplink transmission sent by the terminal device, the network device may obtain a measured value (for example, the first measured value a) of the second uplink transmission. Meanwhile, after the second uplink transmission sent by the terminal device is received by the other network devices, the other network devices may also obtain a measured value (for example, the first measured value B) of the second uplink transmission, and send the measured value of the second uplink transmission to the network device. In this way, the network device may obtain the first measurement value a and the first measurement value B.

Wherein the first measurement value a is the same as the first measurement value B, or the first measurement value a is different from the first measurement value B.

With reference to the second aspect, in another possible design manner, the method further includes: the network equipment can acquire a second uplink transmission measured value and a third uplink transmission measured value, and determine a first power parameter according to the second uplink transmission measured value and the third uplink transmission measured value; or the network equipment acquires the transmission power of the second uplink transmission and the transmission power of the third uplink transmission, and determines a first power parameter according to the transmission power of the second uplink transmission and the transmission power of the third uplink transmission; or the network equipment acquires the first uplink loss corresponding to the second uplink transmission and the second uplink loss corresponding to the third uplink transmission, and determines the first power parameter according to the first uplink loss and the second uplink loss.

In this way, the network device may determine the first power parameter through different uplink measurements.

With reference to the second aspect, in another possible design, the measurement value of the uplink transmission is an uplink shared channel receiving power; alternatively, the uplink measurement value is the demodulation reference signal received power.

With reference to the second aspect, in another possible design manner, the method further includes: the network device may transmit a first path loss reference signal and a second path loss reference signal.

In addition, the technical effects of the uplink power control method according to the second aspect may refer to the technical effects of the uplink power control method according to the first aspect, which are not described herein again.

In a third aspect, a terminal device is provided. The terminal device includes: an acquisition unit, a determination unit, and a transmission unit. The acquiring unit is configured to acquire a first power parameter, where the first power parameter includes at least one of the following: power offset, path loss compensation factor. And a determining unit for determining the first transmitting power according to the first power parameter. And the transmitting unit is used for transmitting the first uplink transmission by adopting the first transmitting power.

With reference to the third aspect, in another possible design manner, the obtaining unit is specifically configured to receive first indication information, where the first indication information is used to indicate the first power parameter; acquiring first information, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter; and acquiring a media access control unit, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.

With reference to the third aspect, in another possible design manner, the obtaining unit is further configured to obtain second information, where the second information is used to enable the terminal device to update the power parameter.

With reference to the third aspect, in another possible design, the sending unit is further configured to send the second uplink transmission and/or the third uplink transmission.

With reference to the third aspect, in another possible design manner, the obtaining unit is further configured to obtain the first path loss reference signal and the second path loss reference signal; wherein the second uplink transmission includes a first power headroom report determined from the first path loss reference signal, and the third uplink transmission includes a second power headroom report determined from the second path loss reference signal.

With reference to the third aspect, in another possible design manner, the terminal device may further include a storage unit, where a program or an instruction is stored. When the processing unit executes the program or the instructions, the terminal device according to the third aspect may perform the uplink power control method according to the first aspect.

In addition, the technical effects of the terminal device described in the third aspect may refer to the technical effects of the uplink power control method described in the first aspect, which are not described herein.

In a fourth aspect, a network device is provided. The network device includes a transmitting unit and a receiving unit. The sending unit is configured to send a first power parameter to the terminal device, where the first power parameter includes at least one of the following: power offset, path loss compensation factor. And the receiving unit is used for receiving the first uplink transmission, and the transmitting power of the first uplink transmission is determined according to the first power parameter.

With reference to the fourth aspect, in another possible design manner, the sending unit is specifically configured to send first indication information to the terminal device, where the first indication information is used to indicate the first power parameter; transmitting first information to the terminal equipment, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter; and sending a media access control unit to the terminal equipment, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.

With reference to the fourth aspect, in another possible design manner, the sending unit is further configured to send second information, where the second information is used to enable the terminal device to update the power parameter.

With reference to the fourth aspect, in another possible design manner, the network device further includes a determining unit. The receiving unit is further configured to receive the second uplink transmission, and acquire one or more measurement values of the second uplink transmission. And the determining unit is used for determining the first power parameter according to one or more measured values of the second uplink transmission.

With reference to the fourth aspect, in another possible design manner, the receiving unit is further configured to obtain the measured value of the second uplink transmission and the measured value of the third uplink transmission. And the determining unit is also used for determining the first power parameter according to the measured value of the second uplink transmission and the measured value of the third uplink transmission. And the receiving unit is also used for acquiring the transmitting power of the second uplink transmission and the transmitting power of the third uplink transmission. And the determining unit is further used for determining the first power parameter according to the transmission power of the second uplink transmission and the transmission power of the third uplink transmission. The receiving unit is further configured to obtain a first uplink loss corresponding to the second uplink transmission and a second uplink loss corresponding to the third uplink transmission. And the determining unit is also used for determining the first power parameter according to the first uplink loss and the second uplink loss.

With reference to the fourth aspect, in another possible design, the measurement value of the uplink transmission is uplink shared channel received power; alternatively, the uplink measurement value is the demodulation reference signal received power.

With reference to the fourth aspect, in another possible design manner, the sending unit is further configured to send the first path loss reference signal and the second path loss reference signal.

In combination with the fourth aspect, in another possible design manner, the network device may further include a storage unit, where the storage unit stores a program or instructions. When the processing unit executes the program or the instruction, the terminal device according to the fourth aspect may execute the uplink power control method according to the first aspect.

In addition, the technical effects of the network device according to the fourth aspect may refer to the technical effects of the uplink power control method according to the second aspect, which are not described herein.

In a fifth aspect, an uplink power control apparatus is provided. The uplink power control device includes: a processor coupled to a memory for storing a computer program; the processor is configured to execute a computer program stored in the memory, to cause the uplink power control apparatus to perform the uplink power control method according to any one of the possible implementations of the first aspect or the second aspect.

In one possible design, the uplink power control device according to the sixth aspect may further include a transceiver. The transceiver may be a transceiver circuit or an input/output port. The transceiver may be used for the uplink power control device to communicate with other uplink power control devices.

In this application, the uplink power control apparatus according to the fifth aspect may be a terminal device or a network device, or a chip (system) or other parts or components disposed inside the terminal device or the network device.

In addition, the technical effects of the uplink power control apparatus according to the fifth aspect may refer to the technical effects of the uplink power control method according to any implementation manner of the first aspect or the second aspect, which are not described herein.

In a sixth aspect, there is provided a computer readable storage medium comprising: computer programs or instructions; the computer program or instructions, when run on a computer, cause the computer to perform the uplink power control method according to any one of the possible implementation manners of the first aspect or the second aspect.

In a seventh aspect, a computer program product is provided, comprising a computer program or instructions which, when run on a computer, cause the computer to perform the uplink power control method according to any one of the possible implementations of the first or second aspects.

Drawings

Fig. 1 is an uplink power control schematic diagram of single cell measurement according to an embodiment of the present application;

Fig. 2 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic architecture diagram of another communication system according to an embodiment of the present application;

fig. 4 is a flow chart of an uplink power control method provided in an embodiment of the present application;

fig. 5 is a flow chart of another uplink power control method according to an embodiment of the present application;

fig. 6 is a flow chart of another uplink power control method according to an embodiment of the present application;

fig. 7 is a flow chart of another uplink power control method according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 9 is a second schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 11 is a schematic diagram of a second network device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The character "/" in the present application generally indicates that the front-rear association object is an "or" relationship. For example, A/B may be understood as A or B.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present embodiment, unless otherwise specified, the meaning of "plurality" is two or more.

Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or modules is not limited to only those steps or modules but may include other steps or modules not listed or inherent to such process, method, article, or apparatus.

In addition, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "e.g." should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present concepts in a concrete fashion.

In order to facilitate understanding of the technical solution of the present application, a description of conventional techniques is first provided before a detailed description of an uplink power control method in an embodiment of the present application is provided.

Uplink power control mechanism based on single cell measurement in conventional technology

As shown in fig. 1, an uplink power control scheme for single cell measurement is shown. Wherein the transmission and reception point (transmission reception point, TRP) 1 serves UE1 and UE3, and TRP2 serves UE 2.

The UE transmits the PUSCH on the uplink active part Bandwidth (Bandwidth part) b of the carrier f of the serving cell (serving cell) c by adopting a power parameter set number j (j is an integer greater than or equal to 0), and when the power control adjustment state index value is l, the transmission power P of the PUSCH is determined on the transmission time i _PUSCH,b,f,c (i,j,q _d L) may satisfy equation one.

Wherein P is _CMAX,f,c (i) Maximum output power, P, configured on PUSCH transmission occasion i on carrier f of serving cell c _{O_PUSCH,b,f,c} (j) The target power value desired to be received for the serving cell,

for the number of Resource Blocks (RBs) occupied by PUSCH on PUSCH transmission occasion i on uplink active part bandwidth b of carrier f of serving cell c, μ is a value corresponding to Subcarrier spacing (SCS) configuration, α _b,f,c (j) PL as a pathloss compensation factor _b,f,c (q _d ) Delta for downstream pathloss estimate _TF,b,f,c (i) For information related to modulation and coding strategy (Modulation and Coding Scheme, MCS), f _b,f,c (i, l) is a PUSCH power control adjustment state at PUSCH transmission timing i on uplink active part bandwidth b of carrier f of serving cell c, and l is 0 or 1.

P is the same as _CMAX,f,c (i) And the factors such as the transmission capability of the UE, the frequency domain resource allocation of the PUSCH and the like are related.

Is the configured nominal part dedicated to serving cell c

And UE-specific parts

(hereinafter referred to as P0).

Wherein P0 and alpha _b,f,c (j) Are all power parameters. The base station may configure a plurality of power parameter sets for the UE, the power parameter sets including: power control sets ID, P0 and a _b,f,c (j)。

The UE may acquire the power control parameters in the following two ways.

In the first mode, the UE may determine the power parameter set number j used for current PUSCH transmission according to the current transmission mode and the value indicated by the sounding reference signal indication (Sounding Reference Signal Indication, SRI) field, and further determine the values of P0 and α according to the power parameter set number j. Specifically, when the base station configures a plurality of power parameter sets for the UE, configures a rule for the correspondence between the power parameters and the SRIs, and a mapping relation between the SRI field value and the power parameter sets, and the DCI for scheduling the PUSCH includes the SRI field, the UE may determine, according to the mapping relation and the value of the SRI field, the power parameter set adopted by the UE to transmit the PUSCH.

Illustratively, one SRI code bit corresponds to one set of power parameters. The SRI field configured by the base station for the UE is 2 bits, and the SRI has 00/01/10/11 values, each value corresponding to a power parameter set (ID, P0, α).

In the second mode, when the base station configures a plurality of power parameter sets for the UE and the DCI of the scheduled PUSCH does not include the SRI field, the default power parameter set number j is 2. And the UE acquires the power parameters P0 and alpha according to the power parameter set with the minimum number.

PL _b,f,c (q _d ) Is UE according to the path loss reference signal q _d And the calculated downlink path loss estimated value can be used as a path loss compensation value for uplink power control. The downlink path loss estimate may be determined in three ways.

In one mode, if the UE does not allocate a PUSCH-pathloss reference signal (PUSCH-pathloss), or before the UE configures the dedicated parameters, the UE calculates a downlink pathloss estimate using a synchronization signal block (synchronization signal block, SSB) that is used to obtain a master information block (Master information block, MIB).

In the second mode, if PUSCH transmission is scheduled by a random access response (random access response, RAR) Uplink (UL) grant, the UE calculates the downlink pathloss estimate using the same pathloss reference index value as the associated PRACH transmission.

In a third aspect, when a plurality of path loss reference signals (for example, SSBs or channel state indication reference signals (Channel State Information Reference Signal, CSI-RS)) are configured, RRC configuration information of the path loss reference signals includes: the path loss reference signal ID and associated reference signal ID). And then, the base station can configure association relations between a plurality of path loss reference signals and the SRI field for the UE, and the UE determines the reference signal corresponding to the value indicated by the SRI field to determine the downlink path loss estimated value of the current PUSCH according to the value indicated by the SRI field.

The downlink pathloss estimate may satisfy the following equation two.

PL _b,f,c (q _d ) Equation two of =preferenceSignalPower-higher layer filtered RSRP0

Wherein, reference signaling power is the transmission power of the downlink reference signal configured by the higher layer signaling, and higher layer filtered RSRP is the received power of the reference signal received by the UE after the higher layer filtering.

The preferenceSignalPower can be obtained as follows.

In the first mode, if the UE does not configure the reception period CSI-RS, the reference signaling power may be configured by synchronizing the broadcast signal block power ss-PBCH-BlockPower.

In the second mode, if the UE configures the reception period CSI-RS, the reference signaling power may be configured by ss-PBCH-BlockPower and powercontrol offsetss. Wherein powerControlOffsetSS is the difference between the transmission power of CSI-RS and the transmission power of SSB.

If the UE is not configured powerControlOffsetSS, powercontroloffsetss=0.

Δ _TF,b,f,c (i) May be determined by factors such as the type of information carried by the PUSCH (e.g., carrying uplink shared channel (Uplink Shared Channel, UL-SCH) data information, or channel state information (Channel State Information, CSI) data information, etc.), the location of the occupied physical resources, the number of physical resources, etc.

f _b,f,c And (i, l) is notified by the DCI signaling issued by the base station, so that the base station can adjust the PUSCH transmitting power in real time according to the current transmission channel state and scheduling condition.

Conventional technology two, uplink multipoint coordinated transmission (Uplink Coordinated multi-point, UL CoMP)

UL CoMP refers to geographically separated transmission points that jointly receive and combine data (e.g., PUSCH) transmitted by one terminal. Multiple transmission points involved in the cooperation are often referred to as base stations of different cells. The CoMP technology enables a plurality of cells to serve cell edge UEs at the same time, so as to improve coverage performance of the edge UEs, and further improve spectrum efficiency of cell edge users.

Exemplary, as shown in fig. two, a schematic diagram of uplink coordinated multi-point transmission is shown. Wherein TRP1 serves UE1 and UE3, TRP2 serves UE2 and UE3, that is, TRP1 and TRP2 serve UE3 simultaneously.

Conventional technology III, power headroom report (Power headroom report, PHR)

The power headroom refers to the difference between the maximum uplink transmit power of the UE and the current PUSCH transmit power. That is, the UE may use transmission power in addition to the transmission power used for the current PUSCH transmission. The power headroom may be determined by the following two methods.

In the first method, the power headroom is determined based on the PUSCH, and the power headroom can satisfy the following formula three.

Wherein the pH is _type,b,f,c (i,j,q _d L) is a power headroom, and other parameters may be described in the formula one, which is not described herein.

The second method, the power headroom, is determined based on SRS transmission.

If the power margin is positive, it is indicated that the UE can transmit more data at the maximum power. If the power headroom is negative, it indicates that the uplink transmission of the UE has exceeded the allowed maximum transmission power. That is, the power headroom may affect the scheduling of the base station, or the power headroom report may be used as a reference for the base station to allocate uplink RB resources.

Any of the following five conditions is met, and a power headroom report may be triggered.

Condition one, PHR disabled timer (PHR-proscriber) expired or expired, and the path loss change exceeds PHR transmit power factor variable (PHR-Tx-powerfactor change). Wherein the path loss is a path loss of at least one active serving cell of any MAC entity that is used as a path loss reference since a PHR was last transmitted in a medium access control (Media access control, MAC) entity when the MAC entity has uplink resources for a new transmission.

Condition two, PHR periodic timer (PHR-periodic timer) expires.

Condition three, last configured or reconfigured PHR function, but this action cannot disable PHR function.

Condition four, the MAC entity of any configured uplink Secondary Cell (SCell) is activated.

Condition five, increase PSCell (Primary Secondary Cell ).

When multiple transmission points (e.g., multiple base stations) cooperate to serve a terminal device, the transmission power of the terminal device determined from the single-station measurements can result in significant inter-user interference.

When a plurality of transmission points (e.g., a plurality of base stations) cooperate to serve one terminal device, in order to reduce interference of transmission power of the terminal device to other users, an uplink power control method is provided in the embodiments of the present application.

To facilitate understanding of the embodiments of the present application, a communication system suitable for the embodiments of the present application will be described in detail first with reference to the communication system shown in fig. 3 as an example. Fig. 3 is a schematic architecture diagram of a communication system to which the uplink power control method according to the embodiment of the present application is applicable.

As shown in fig. 3, the communication system includes a network device and a terminal device. The network devices include a core network device 310, a radio access network device 320, and a radio access network device 330, the terminal devices including a user terminal 340. Wherein radio access network device 320 and radio access network device 330 may together provide services to user terminal 340. The terminal equipment is connected with the wireless access network equipment in a wireless mode, and the wireless access network equipment is connected with the core network equipment in a wireless or wired mode.

The network device is a device located at the network side of the communication system and having a wireless transceiver function or a chip system arranged on the device. The network devices include, but are not limited to: an Access Point (AP) in a wireless fidelity (wireless fidelity, wiFi) system, such as a home gateway, a router, a server, a switch, a bridge, etc., an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), a wireless relay Node, a wireless backhaul Node, a transmission point (transmission and reception point, TRP, transmission point, TP), etc., may also be a 5G, such as a gbb in a new air interface (NR) system, or a transmission point (TRP, TP), one or a group of base stations (including multiple antenna panels) antenna panels in a 5G system, or may also be network nodes constituting a gbb or transmission point, such as a baseband unit (BBU), or a distributed base station unit (base station unit), a distributed unit (rsdu), etc., a base station unit (rsdu), etc.

It should be noted that, the core network device 310 and the radio access network device 320 may be separate physical devices, or the functions of the core network device 310 and the logic functions of the radio access network device 320 may be integrated on the same physical device, or the functions of the radio access network device 320 in which a part of the functions of the core network device 310 and a part of the functions of the radio access network device 320 are integrated on one physical device.

The terminal equipment is a terminal which is accessed into the communication system and has a wireless receiving and transmitting function or a chip system which can be arranged on the terminal. The terminal device may also be referred to as a user equipment, access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned-driving (self-driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a vehicle-mounted terminal, an RSU with a terminal function, or the like. The terminal device of the present application may be a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit that is built in a vehicle as one or more components or units, and the vehicle may implement the uplink power control method provided in the present application through the built-in vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit.

It should be noted that the solution in the embodiments of the present application may also be applied to other communication systems, and the corresponding names may also be replaced by names of corresponding functions in other communication systems.

It should be appreciated that fig. 3 is a simplified schematic diagram that is merely illustrative for ease of understanding, and that other network devices, and/or other terminal devices, may also be included in the communication system, and are not shown in fig. 3.

The uplink power control method provided in the embodiments of the present application will be specifically described below with reference to fig. 4 to 7.

Fig. 4 is a schematic flow chart of an uplink power control method according to an embodiment of the present application. As shown in fig. 4, the uplink power control method may include S401 to S404.

S401, the UE acquires a first power parameter.

Wherein the first power parameter comprises at least one of: the power offset P0, the path loss compensation factor α. In the embodiment of the present application, the name of the first power parameter is also a power parameter, which is not limited in the embodiment of the present application.

The network device sends the first power parameter to the UE. The UE receives a first power parameter sent by the network device. For example, the network device sends first indication information to the UE, where the first indication information is used to indicate the first power parameter. The UE receives the first indication information to acquire a first power parameter.

In this embodiment of the present application, the first indication information has the following two implementations.

Mode a, the first indication information is a field in DCI, where DCI is used to schedule PUSCH transmission.

Note that, the fields in the DCI may be SRI fields, or may be other fields in the DCI, which is not limited in this embodiment of the present application. Hereinafter, embodiments of the present application will be described by taking a field in DCI as an SRI field as an example.

In the mode a, the network device sends a correspondence between one value of the first indication information and at least two power parameters to the UE. Wherein the first indication information includes: the power parameter and the mapping relation between the value of the SRI field and the power parameter; or, the mapping relation between the value of the SRI field and the power parameter index; or, the mapping relation between the value of the SRI field and the index of the power parameter set. The set of power parameters includes a first power parameter.

In the mode a1, the network device sends a corresponding relation between a value of the first indication information and a power parameter to the UE, and the network device updates the corresponding relation between the value of the first indication information and the power parameter by using the media access control unit, so that the UE obtains the updated power parameter.

The network device may send the first information to the UE before the network device sends the first power parameter to the UE. The first information is used for indicating a mapping relation between the first indication information and the second power parameter, the first information is a higher layer parameter, or the first information is radio resource control RRC signaling. The second power parameter includes at least one of: power offset P0, path loss compensation factor.

Thereafter, the network device transmits a media access control unit (Media access control Control element, MAC CE) to the UE, the MAC CE being configured to indicate a mapping relationship between the first indication information and the first power parameter.

It should be noted that the second power parameter is a power parameter in a case where the UE accesses only the primary serving cell. The first power parameter is a power parameter in case that the UE accesses the primary serving cell and the cooperative serving cell simultaneously. Thus, the first power parameter and the second power parameter are different.

Optionally, before the network device sends the MAC CE to the UE, the network device sends second information to the UE, where the second information is used to enable the UE to update the power parameter.

Optionally, before the network device sends the first power parameter to the UE, the network device sends second information to the UE, where the second information is used to enable the UE to update the power parameter.

Mode b, the first indication information is CoMP configuration information of coordinated multipoint transmission.

The CoMP configuration information includes a first power parameter and reference signal information. In mode b, the first power parameter further comprises a path loss reference signal. The reference signal information includes at least one of the following information: sounding reference signal, SRS, scrambling sequence, demodulation reference signal (Demodulation Reference Signal, DMRS), scrambling sequence, and DMRS time-frequency resources.

In one possible implementation, the network device generates CoMP configuration information according to the first power parameter. And then, the network equipment sends the CoMP configuration information to the UE.

It should be noted that, according to the first formula, the first transmission power is determined by the first power parameter and the third power parameter. Thus, in the embodiment of the present application, the network device further transmits to the UE a third power parameter, where the third power parameter includes:

PL _b,f,c (q _d )、Δ _TF,b,f,c (i)、f _b,f,c for the explanation of (i, l), particularly the third power parameter, reference may be made to the explanation of equation one above, and no further explanation is given here. Specifically, the embodiment of the present application is not limited to this, where the network device sends the first power parameter to the UE, or the network device sends the third power parameter to the UE before the network device sends the first power parameter to the UE, or after the network device sends the first power parameter to the UE.

S402, the UE determines a first transmitting power according to the first power parameter.

In one possible implementation, the UE receives first indication information from the network device, where the first indication information is used to indicate the first power parameter. And the UE acquires the first power parameter according to the first indication information. And then, the UE determines the first transmitting power according to the first power parameter.

In one possible design, the first indication information is represented in the same manner as the manner a in S501, that is, the first indication information is an SRI field. The UE receives an SRI field from the network equipment and acquires a first power parameter according to the corresponding relation between the value indicated by the SRI field and the power parameter.

It should be noted that, when the first indication information is the SRI field, the UE stores a mapping relationship between the value of the SRI field and the power parameter; or, the mapping relation between the value of the SRI field and the power parameter index; or, the mapping relation between the value of the SRI field and the index of the power parameter set. Mapping relation between the value of SRI field stored in UE and power parameter; or, the mapping relation between the value of the SRI field and the power parameter index; or, the mapping relationship between the value of the SRI field and the index of the power parameter set is configured by RRC sent by the network device before the UE receives the first indication information from the network device.

In some embodiments, the UE receives first information indicating a mapping relationship between the SRI and the second power parameter. That is, the UE maintains a mapping relationship between the SRI and the second power parameter. Since the second power parameter is a power parameter in case the UE accesses only the primary serving cell. Therefore, when the first information is stored in the UE, it is indicated that the power parameter in the power parameter set stored in the UE is the second power parameter. That is, the UE may acquire the SRI field and acquire the power parameter in the case where the UE accesses only the primary serving cell according to the value indicated by the SRI field.

It will be appreciated that when the UE only accesses the primary serving cell, the UE may obtain the SRI field and determine the set of power parameters and the second power parameter from the SRI field. In this way, the UE may control the transmit power using the second power parameter in case of accessing only the primary serving cell.

Optionally, if the UE stores the first information, before the UE acquires the SRI field, the UE receives the MAC CE sent by the network device, so that the updated first information is used to indicate a mapping relationship between the SRI and the first power parameter. That is, after the UE receives the MAC CE, the mapping relationship between the SRI field and the second power parameter stored in the UE is updated to the mapping relationship between the SRI field and the first power parameter.

Illustratively, the UE maintains a correspondence of P0 of 6 decibel milliwatts (decibel relative to one milliwatt, dBm) when the value indicated by the SRI field is 00. The UE receives a MAC CE sent by the network device, where when the value indicated by the MAC CE for indicating the SRI field is 00, P0 is 4dBm. That is, when the UE holds the value indicated by the SRI field to be 00 after the UE receives the MAC CE, P0 is a correspondence of 4dBm.

It may be appreciated that when the UE accesses the primary serving cell and the cooperative serving cell simultaneously, the UE acquires the SRI field, and may acquire the first power parameter according to the value indicated by the SRI field and the updated first information. In this way, the UE may use the first power parameter to control the transmission power under the condition of accessing the primary serving cell and the cooperative serving cell at the same time, so as to avoid using the second power parameter to control the transmission power, resulting in that the transmission power is too high and interference is generated to other UEs.

Optionally, before the UE acquires the MAC CE, the UE acquires second information, where the second information is used to enable the UE to update the power parameter. That is, after the UE acquires the second information, the UE receives the MAC CE to update the MAC with the first information.

It should be noted that, in the embodiment of the present application, when the UE stores the first information, the actions performed by the UE include: (1) the UE receives the second information. (2) the UE receives the first information. (3) the UE receives the MAC CE. (4) the UE receives the first indication information. (5) the UE determining a first power parameter. The UE may perform (1) and/or (2) first (i.e., the UE performs (1) and then (2) first, or the UE performs (2) and then (1) first, or the UE performs (1) and (2) simultaneously), and then sequentially performs (3), (4) and (5).

In another possible design, the representation of the first indication information is the same as the representation of the mode b in S501, that is, the first indication information is CoMP configuration information. The UE receives CoMP configuration information from the network device and acquires a first power parameter from the CoMP configuration information.

In the embodiment of the present application, the first transmission power satisfies the following formula four:

wherein P is _PUSCH,b,f,c (i,j,q _d L) determining the transmission power of the PUSCH (i.e. the first transmission power) for the UE on PUSCH transmission occasion i, P _{O_CoMP,b,f,c} (j) (i.e., P0) is the target power value that the serving cell expects to receive, P _PUSCH,b,f,c (i,j,q _d ,l)、

α _b,f,c (j) (i.e., alpha), PL _b,f,c (q _d )、Δ _TF,b,f,c (i)、f _b,f,c (i, l) reference may be made to the description of formula one, and will not be repeated here.

It will be appreciated that since P0 and α are determined by the network device based on the case where the UE accesses both the primary and the co-serving cells. Therefore, compared with the transmission power determined by the technical scheme of the first conventional technology, the first transmission power of the technical scheme is more accurate.

S403, the UE transmits the first uplink transmission by adopting the first transmission power.

It can be appreciated that, because the first transmission power determined by the technical scheme of the present application is more accurate, that is, the first transmission power is not excessively large, compared to the transmission power determined by the technical scheme of the first conventional technology. Therefore, the UE transmitting the first uplink transmission with the first transmit power does not cause interference to other UEs.

S404, the network equipment receives the first uplink transmission.

Based on the above technical scheme, the UE is acquiring a first power parameter: after the power offset and/or the path loss compensation factor, the first transmission power may be determined according to the power offset and/or the path loss compensation factor, so as to ensure that the first transmission power is not excessively high. Therefore, in the technical scheme, when the UE adopts the first transmitting power to transmit the first uplink transmission, interference generated by other UEs is reduced.

In an embodiment of the present application, the network device includes a first network device and a second network device. The following describes embodiments of the present application by taking TRP1 as a first network device and TRP2 as a second network device. Wherein TRP1 is the network device of the primary serving cell of the UE and TRP2 is the network device of the co-serving cell of the UE.

In some embodiments, the terminal sends two uplink transmissions to the network device for implementing uplink power control for the UE before the network device sends the first power parameter to the UE. For example, taking network devices as TRP1 and TRP2, the UE sends a second uplink transmission to TRP1 and the UE sends a third uplink transmission to TRP 2. Wherein the second uplink transmission is the same as the third uplink transmission, or the second uplink transmission is different from the third uplink transmission.

In the following, before TRP1 sends a first power parameter to UE, UE sends a second uplink transmission to TRP1, and UE sends a third uplink transmission to TRP2, which is taken as an example, an uplink power control method provided in the embodiments of the present application is described. As shown in fig. 5, the uplink power control method may include S501-S508:

s501, the UE sends a second uplink transmission to TRP 1.

Wherein the second uplink transmission includes: SRS; or, the second uplink transmission is PUSCH; or when the second uplink transmission is PUSCH, the PUSCH carries the first PHR, and the first power headroom report PHR includes the first maximum transmit power reported by the UE. Wherein, the SRS includes: aperiodic SRS, semi-static SRS, periodic SRS.

After receiving the fourth information, the UE transmits the first PHR when transmitting the second uplink transmission to TRP 1. The fourth information includes: DCI, MAC CE, radio resource control RRC signaling.

One possible implementation manner, the UE receives third information sent by TRP1, where the third information is used to instruct the UE to send a second uplink transmission to TRP 1. Thereafter, the UE sends a second uplink transmission to TRP 1.

In another possible implementation, the UE sends the second uplink transmission to TRP1 without receiving the third information. In this case, the second uplink transmission includes: periodic SRS, PUSCH.

Optionally, when the UE sends the second uplink transmission to TRP1, the UE reports the transmission power of the second uplink transmission to TRP 1.

S502, the UE sends a third uplink transmission to the TRP 2.

Optionally, the third uplink transmission further includes: SRS; or, the third uplink transmission is PUSCH; or when the third uplink transmission is the PUSCH, the PUSCH carries a second PHR, where the second PHR includes the maximum transmission power reported by the UE. Wherein, the SRS includes: aperiodic SRS, semi-static SRS, periodic SRS.

After receiving the fourth information, the UE transmits the second PHR when transmitting the third uplink transmission to TRP 2.

Note that the second uplink transmission and the third uplink transmission may be the same or different, which is not limited in the embodiment of the present application. For example, the second uplink transmission and the third uplink transmission are both periodic SRS. For another example, the second uplink transmission is a periodic SRS and the third uplink transmission is a PUSCH.

In one possible implementation, the UE receives third information sent by TRP1, where the third information is further used to instruct the UE to send a third uplink transmission to TRP 2. Thereafter, the UE sends a third uplink transmission to TRP 2.

In another possible implementation, the UE sends the third uplink transmission to TRP2 without receiving the third information. In this case, the third uplink transmission includes: periodic SRS, PUSCH.

Optionally, when the UE sends the third uplink transmission to TRP2, the transmitting power of the third uplink transmission is reported to TRP 2.

S503, TRP2 receives the third uplink transmission and acquires the measurement value of the third uplink transmission.

Wherein the measured value is the uplink shared channel received power or the reference signal received power (Reference Signal Received Power, RSRP). That is, TRP2 may acquire the uplink shared channel received power of the third uplink transmission and may also acquire the second RSRP of the third uplink transmission. The following describes embodiments of the present application by taking the third uplink transmission as the measurement value as the second RSRP as an example.

In the embodiment of the present application, the RSRP is SRS-RSRP or DMRS-RSRP, which is not limited in the embodiment of the present application.

In one possible design, TRP2 acquires a second RSRP. After that, TRP2 sends a second RSRP to TRP 1.

In another possible design, TRP2 may obtain the transmit power of the third uplink transmission. After that, TRP2 sends the transmit power of the third uplink transmission to TRP 1.

In another possible design, TRP2 may obtain the transmit power of the second RSRP and the third uplink transmission. And the TRP2 determines a second uplink loss according to the second RSRP and the transmission power of the third uplink transmission, and sends the second uplink loss to the TRP 1. Second uplink loss = transmit power of third uplink transmission-second RSRP.

S504, TRP1 receives the second uplink transmission and acquires the measurement value of the second uplink transmission.

One possible implementation way, TRP1 obtains the uplink shared channel received power of the second uplink transmission, or TRP1 obtains the first RSRP of the second uplink transmission.

After the UE transmits the second uplink transmission and the third uplink transmission, TRP1 determines the first power parameter in the following three ways.

In the first mode, TRP1 acquires a measurement value of the second uplink transmission and a measurement value of the third uplink transmission, and determines the first power parameter according to the measurement value of the second uplink transmission and the measurement value of the third uplink transmission.

Illustratively, TRP1 acquires a first RSRP and a second RSRP. TRP1 determines a first power parameter from a difference between the first RSRP and the second RSRP.

It should be noted that, because the first uplink loss and the second uplink loss may be different, or the transmission power of the UE transmitting the second uplink transmission and the transmission power of the UE transmitting the third uplink transmission may be different, and the RSRP is affected by factors such as the uplink loss and the transmission power. Thus, the first RSRP and the second RSRP may also be different.

And in a second mode, TRP1 acquires the transmission power of the second uplink transmission and the transmission power of the third uplink transmission, and determines a first power parameter according to the transmission power of the second uplink transmission and the transmission power of the third uplink transmission.

Mode three, TRP1 obtains a first uplink loss corresponding to the second uplink transmission and a second uplink loss corresponding to the third uplink transmission, and determines a first power parameter according to the first uplink loss and the second uplink loss.

For example, TRP1 obtains the transmit powers of the first RSRP and the second uplink transmission and determines the first uplink loss, the transmit power of the first uplink loss-second uplink transmission-the first RSRP. Then, TRP1 receives the second uplink loss transmitted by TRP 2. TRP1 determines a first power parameter based on the first uplink loss and the second uplink loss.

S505, TRP1 transmits the first power parameter to the UE.

S506, the UE acquires the first power parameter.

S507, the UE determines the first transmitting power according to the first power parameter.

S508, the UE transmits the first uplink transmission by adopting the first transmission power.

It should be noted that, for the description of S505 to S508, reference may be made to the descriptions of S401 to S404, which are not repeated here.

Based on the above technical solution, the network device receives the second uplink transmission and/or the third uplink transmission. Thus, the network device may determine the first power parameter (power offset and path loss compensation factor) from the uplink transmission. Therefore, after the UE acquires the first power parameter, the UE may determine the first transmit power according to the power offset and the path loss compensation factor, so as to ensure that the first transmit power is not excessively high. Therefore, in the technical scheme, when the UE adopts the first transmitting power to transmit the first uplink transmission, interference to other UEs is not generated.

In other embodiments, the terminal transmits an uplink transmission for implementing uplink power control for the UE before the network device transmits the first power parameter to the UE. For example, using network devices as TRP1 and TRP2, the UE transmits a second uplink transmission before TRP1 transmits the first power parameter to the UE, and both TRP1 and TRP2 receive the second uplink transmission.

In the following, before TRP1 sends a first power parameter to UE, the UE sends a second uplink transmission, and TRP1 and TRP2 both receive the second uplink transmission, which is taken as an example, to describe an uplink power control method provided in the embodiments of the present application. As shown in fig. 6, the uplink power control method may further include S601 to S607:

s601, the UE sends a second uplink transmission.

Wherein the second uplink transmission includes: SRS; or, the second uplink transmission is PUSCH; or when the second uplink transmission is the PUSCH, the PUSCH carries the first PHR, where the first PHR includes a first maximum transmit power reported by the UE. Wherein, the SRS includes: aperiodic SRS, semi-static SRS, periodic SRS.

After receiving the fourth information, the UE transmits the first PHR when transmitting the second uplink transmission.

One possible implementation manner, the UE receives third information sent by TRP1, where the third information is further used to instruct the UE to send the second uplink transmission. And then, the UE sends a second uplink transmission.

In another possible implementation, the UE sends the second uplink transmission without receiving the third information. In this case, the second uplink transmission includes: periodic SRS, PUSCH.

Optionally, when the UE sends the second uplink transmission, reporting the transmit power of the second uplink transmission

S602, TRP2 receives the second uplink transmission and acquires a measurement value of the second uplink transmission.

In one possible design, TRP2 obtains the measurement of the second uplink transmission. After that, TRP2 sends the measured value of the second uplink transmission to TRP 1.

S603, TRP1 receives the second uplink transmission and acquires a measurement value of the second uplink transmission.

One possible implementation, TRP1 receives the second uplink transmission sent by the UE and obtains the measurement of the second uplink transmission.

In one possible design, TRP1 receives a measurement of the second uplink transmission sent by TRP 2.

The measurement value of the second uplink transmission acquired by TRP1 and the measurement value of the second uplink transmission transmitted by TRP2 received by TRP1 may be the same or different.

Alternatively, TRP1 determines the first power parameter based on the measurement of the second uplink transmission acquired by TRP1 and the measurement of the second uplink transmission transmitted by TRP2 received by TRP 1.

S604, TRP1 sends the first power parameter to the UE.

S605, the UE acquires a first power parameter.

S606, the UE determines a first transmitting power according to the first power parameter.

S607, the UE sends the first uplink transmission with the first transmit power.

It should be noted that, for the description of S604-S607, reference may be made to the descriptions of S401-S404, which are not repeated here.

Optionally, TRP1 and TRP2 transmit the path loss signal before the UE transmits the uplink transmission. For example, as shown in fig. 7, the uplink power control method may further include S701-S703 before S501 and S502, or before S601.

S701, TRP2 transmits a second path loss reference signal.

The second path loss reference signal is a path loss reference signal of a second uplink path. The second uplink path is an uplink path between the UE and TRP 2.

In one possible design, TRP2 may send a second path loss reference signal to the UE.

In another possible design, TRP2 sends a second path loss reference signal to TRP 1.

S702, TRP1 transmits a first lossy reference signal.

The first path loss reference signal is a path loss reference signal of a first uplink path. The first uplink path is an uplink path between the UE and TRP 1.

Optionally, TRP1 receives the second path loss reference signal and transmits the first path loss reference signal and the second path loss reference signal to the UE.

Optionally, TRP1 sends fourth information to the UE, the fourth information being used to instruct the UE to transmit PHR. The fourth information includes: DCI, MAC CE, RRC signaling.

S703, the UE acquires a first path loss reference signal and a second path loss reference signal.

One possible implementation manner, the UE acquires a first path loss reference signal sent by TRP1, and the UE acquires a second path loss reference signal sent by TRP 2.

In another possible implementation, the UE acquires a first path loss reference signal and a second path loss reference signal sent by TRP 1.

Optionally, after the UE acquires the first path loss reference signal and the second path loss reference signal, the UE determines a first PHR according to the first path loss reference signal; and the UE determines a second PHR according to the second path loss reference signal.

In one possible implementation, the UE obtains a first downlink loss value of the first downlink path according to the first downlink loss reference signal, and determines the first PHR according to the first downlink loss value. And the UE acquires a second downlink loss value of a second downlink path according to the second downlink loss reference signal, and determines a second PHR according to the second downlink loss value.

It should be noted that TRP1 in S501 to S508, S601 to S607, and S701 to S703 is a network device in S401 to S404 in the embodiment of the present application. That is, the network devices in S401 to S404 may each perform an action performed by TRP 1.

The uplink power control method provided in the embodiment of the present application is described in detail above with reference to fig. 4 to 7. The terminal device provided in the embodiment of the present application is described in detail below with reference to fig. 8 to 11.

Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 8, the terminal device includes: acquisition unit 801, determination unit 802, and transmission unit 803. For convenience of explanation, fig. 8 shows only the main components of the uplink power control apparatus.

In one possible design, the terminal device may be adapted to be used in the communication system shown in fig. 3 or fig. 4, and perform the function of controlling uplink power in the uplink power control method shown in fig. 4-fig. 7.

The acquiring unit 801 is configured to acquire a first power parameter, where the first power parameter includes at least one of the following: power offset, path loss compensation factor. A determining unit 802, configured to determine a first transmission power according to the first power parameter. A transmitting unit 803, configured to transmit the first uplink transmission using the first transmit power.

Optionally, the acquiring unit 801 is specifically configured to receive first indication information, where the first indication information is used to indicate a first power parameter; acquiring first information, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter; and acquiring a media access control unit, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.

Optionally, the acquiring unit 801 is further configured to acquire second information, where the second information is used to enable the terminal device to update the power parameter.

Optionally, the sending unit 803 is further configured to send the second uplink transmission and/or the third uplink transmission.

Optionally, the obtaining unit 801 is further configured to obtain a first path loss reference signal and a second path loss reference signal. The second uplink transmission includes a first power headroom report determined from the first path loss reference signal, and the third uplink transmission includes a second power headroom report determined from the second path loss reference signal.

Optionally, the terminal device shown in fig. 8 may further include a storage module (not shown in fig. 8) storing a program or instructions. When the determining unit 802 executes the program or the instruction, the terminal device is enabled to execute the function of controlling the uplink power in the uplink power control method shown in fig. 4 to 7.

In addition, the technical effects of the terminal device may refer to the technical effects of the uplink power control method shown in fig. 4 to fig. 7, and are not described herein again.

Fig. 9 is a schematic structural diagram of a second terminal device according to the embodiment of the present application. As shown in fig. 9, the terminal device may include a processor 901. Optionally, the terminal device may further comprise a memory 902 and/or a transceiver 903. Wherein the processor 901 is coupled to the memory 902 and the transceiver 903, such as may be connected by a communication bus.

The following describes the respective constituent elements of the terminal device in detail with reference to fig. 9:

the processor 901 is a control center of the terminal device, and may be one processor or a generic name of a plurality of processing elements. For example, processor 901 is one or more central processing units (central processing unit, CPU), but may also be an integrated circuit (application specific integrated circuit, ASIC), or one or more integrated circuits configured to implement embodiments of the present application, such as: one or more microprocessors (digital signal processor, DSPs), or one or more field programmable gate arrays (field programmable gate array, FPGAs).

Alternatively, the processor 901 may perform various functions of the terminal device by running or executing a software program stored in the memory 902 and invoking data stored in the memory 902.

In a specific implementation, the network device 1100 may also include multiple processors, such as processor 901 and processor 904 shown in fig. 9, as one embodiment. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more communication devices, circuitry, and/or processing cores for processing data (e.g., computer program instructions).

The memory 902 is configured to store a software program for executing the solution of the present application, and the processor 901 is configured to control the execution of the software program, and the specific implementation manner may refer to the above method embodiment, which is not described herein again.

Alternatively, memory 902 may be, but is not limited to, read-only memory (ROM) or other type of static storage communication device capable of storing static information and instructions, random access memory (random access memory, RAM) or other type of dynamic storage communication device capable of storing information and instructions, but may also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage communication device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 902 may be integrated with the processor 901 or may exist separately and be coupled to the processor 901 through an input/output port (not shown in fig. 9) of a terminal device, which is not specifically limited in this embodiment of the present application.

A transceiver 903 for communication with other terminal devices. For example, the terminal device is a terminal device, and the transceiver 903 may be used to communicate with a network device or another terminal device. As another example, the terminal device is a network device and the transceiver 903 may be used to communicate with the terminal device or with another network device.

Alternatively, the transceiver 903 may include a receiver and a transmitter (not separately shown in fig. 9). The receiver is used for realizing the receiving function, and the transmitter is used for realizing the transmitting function.

Alternatively, the transceiver 903 may be integrated with the processor 901, or may exist separately, and be coupled to the processor 901 through an input/output port (not shown in fig. 9) of a terminal device, which is not specifically limited in this embodiment of the present application.

Fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 10, the network device includes: a transmitting unit 1001, a receiving unit 1002, and a determining unit 1003. For ease of illustration, fig. 10 shows only the main components of the network device.

In one possible design, the network device may be adapted to be used in the communication system shown in fig. 3 or fig. 4, to perform the function of controlling uplink power in the uplink power control method shown in fig. 4-7.

Wherein, the sending unit 1001 is configured to send a first power parameter to a terminal device, where the first power parameter includes at least one of: power offset, path loss compensation factor. The receiving unit 1002 is configured to receive a first uplink transmission, where a transmission power of the first uplink transmission is determined according to a first power parameter.

Optionally, the sending unit 1001 is specifically configured to send first indication information to the terminal device, where the first indication information is used to indicate the first power parameter; transmitting first information to the terminal equipment, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter; and sending a media access control unit to the terminal equipment, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.

Optionally, the sending unit 1001 is further configured to send second information, where the second information is used to enable the terminal device to update the power parameter.

Optionally, the receiving unit 1002 is further configured to receive the second uplink transmission, and obtain one or more measured values of the second uplink transmission. A determining unit 1003, configured to determine the first power parameter according to one or more measurement values of the second uplink transmission.

Optionally, the receiving unit 1002 is further configured to obtain a measurement value of the second uplink transmission and a measurement value of the third uplink transmission. The determining unit 1003 is further configured to determine the first power parameter according to the measured value of the second uplink transmission and the measured value of the third uplink transmission. The receiving unit 1002 is further configured to obtain a transmission power of the second uplink transmission and a transmission power of the third uplink transmission. The determining unit 1003 is further configured to determine the first power parameter according to the transmission power of the second uplink transmission and the transmission power of the third uplink transmission. The receiving unit 1002 is further configured to obtain a first uplink loss corresponding to the second uplink transmission and a second uplink loss corresponding to the third uplink transmission. The determining unit 1003 is further configured to determine a first power parameter according to the first uplink loss and the second uplink loss.

Optionally, the measured value of the uplink transmission is uplink shared channel receiving power; or, the demodulation reference signal received power of the uplink transmission.

Optionally, the sending unit 1001 is further configured to send the first path loss reference signal and the second path loss reference signal.

Optionally, the network device shown in fig. 10 may further include a storage module (not shown in fig. 10) storing a program or instructions. When the determining unit 1003 executes the program or instructions, the network device is enabled to execute the function of controlling the uplink power in the uplink power control method shown in fig. 4 to 7.

In addition, the technical effects of the network device may refer to the technical effects of the uplink power control method shown in fig. 4 to fig. 7, and are not described herein again.

Fig. 11 is a schematic diagram of a second structure of a network device according to an embodiment of the present application. The network device may be a terminal device or a network device, or may be a chip (system) or other part or component that may be provided in the terminal device or the network device. As shown in fig. 11, the network device may include a processor 1101. Optionally, the network device may also include memory 1102 and/or transceiver 1103. The processor 1101 is coupled to the memory 1102 and the transceiver 1103, as may be connected by a communication bus.

The following describes the components of the network device in detail with reference to fig. 11:

the processor 1101 is a control center of the network device, and may be one processor or a collective term of a plurality of processing elements. For example, the processor 1101 is one or more central processing units (central processing unit, CPU), but may also be an integrated circuit (application specific integrated circuit, ASIC), or one or more integrated circuits configured to implement embodiments of the present application, such as: one or more microprocessors (digital signal processor, DSPs), or one or more field programmable gate arrays (field programmable gate array, FPGAs).

Alternatively, the processor 1101 may perform various functions of the network device by running or executing software programs stored in the memory 1102 and invoking data stored in the memory 1102.

In a specific implementation, the network device may also include multiple processors, such as processor 1101 and processor 1104 shown in fig. 11, as an embodiment. Each of these processors may be a single-core processor (single-CPU) or a multi-core processor (multi-CPU). A processor herein may refer to one or more communication devices, circuitry, and/or processing cores for processing data (e.g., computer program instructions).

The memory 1102 is configured to store a software program for executing the present application, and is controlled to execute by the processor 1101, and the specific implementation may refer to the above method embodiment, which is not described herein again.

Alternatively, memory 1102 may be read-only memory (ROM) or other type of static storage communication device that can store static information and instructions, random access memory (random access memory, RAM) or other type of dynamic storage communication device that can store information and instructions, but may also be, without limitation, electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage communication devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 1102 may be integrated with the processor 1101, or may exist separately and be coupled to the processor 1101 through an input/output port (not shown in fig. 11) of a network device, which is not specifically limited in the embodiments of the present application.

A transceiver 1103 for communication with other network devices. For example, the network device is a terminal device, and the transceiver 1103 may be configured to communicate with the network device or with another terminal device. As another example, where the network device is a network device, transceiver 1103 may be used to communicate with a terminal device or with another network device.

Alternatively, the transceiver 1103 may include a receiver and a transmitter (not separately shown in fig. 11). The receiver is used for realizing the receiving function, and the transmitter is used for realizing the transmitting function.

Alternatively, transceiver 1103 may be integrated with processor 1101, or may exist separately, and be coupled to processor 1101 through an input/output port (not shown in fig. 11) of a network device, which is not specifically limited in the embodiments of the present application.

It should be appreciated that the processor in embodiments of the present application may be a central processing unit (central processing unit, CPU), which may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), off-the-shelf programmable gate arrays (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware (e.g., circuitry), firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, but may also indicate an "and/or" relationship, and may be understood by referring to the context.

In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

An uplink power control method, comprising:

the terminal equipment acquires a first power parameter, wherein the first power parameter comprises at least one of the following: a power offset, a path loss compensation factor;

the terminal equipment determines a first transmitting power according to the first power parameter;

and the terminal equipment adopts the first transmitting power to transmit the first uplink transmission.
The method of claim 1, wherein the terminal device obtains a first power parameter, comprising:

the terminal equipment receives first indication information, wherein the first indication information is used for indicating the first power parameter;

before the terminal device receives the first indication information, the method further comprises:

the terminal equipment acquires first information, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter;

The terminal equipment acquires a media access control unit, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.
The method according to claim 2, characterized in that before the terminal device acquires the medium access control unit, the method further comprises:

the terminal equipment acquires second information, wherein the second information is used for enabling the terminal equipment to update the power parameter.
A method according to any of claims 1-3, characterized in that before the terminal device obtains the first power parameter, the method further comprises:

and the terminal equipment sends the second uplink transmission and/or the third uplink transmission.
The method according to claim 4, wherein before the terminal device sends the second uplink transmission and/or the third uplink transmission, the method further comprises:

the terminal equipment acquires a first path loss reference signal and a second path loss reference signal;

the second uplink transmission includes a first power headroom report determined from the first path loss reference signal, and the third uplink transmission includes a second power headroom report determined from the second path loss reference signal.
An uplink power control method, comprising:

the network device sends a first power parameter to the terminal device, wherein the first power parameter comprises at least one of the following: a power offset, a path loss compensation factor;

the network device receives a first uplink transmission, and the transmission power of the first uplink transmission is determined according to the first power parameter.
The method of claim 6, wherein the network device transmitting the first power parameter to the terminal device comprises:

the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating the first power parameter;

before the network device sends the first power parameter to the terminal device, the method further comprises:

the network equipment sends first information to the terminal equipment, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter;

the network device sends a media access control unit to the terminal device, where the media access control unit is configured to instruct a mapping relationship between the first instruction information and the first power parameter.
The method of claim 7, wherein prior to the network device transmitting the first power parameter to the terminal device, the method further comprises:

the network device sends second information, where the second information is used to enable the terminal device to update the power parameter.
The method according to any of claims 6-8, wherein before the network device sends the first power parameter to the terminal device, the method further comprises:

the network equipment receives the second uplink transmission and acquires one or more measured values of the second uplink transmission;

the network device determines the first power parameter based on one or more measurements of the second uplink transmission.
The method according to any one of claims 6-8, further comprising:

the network equipment acquires the measured value of the second uplink transmission and the measured value of the third uplink transmission; the network equipment determines the first power parameter according to the measured value of the second uplink transmission and the measured value of the third uplink transmission;

or the network equipment acquires the transmitting power of the second uplink transmission and the transmitting power of the third uplink transmission; the network equipment determines a first power parameter according to the transmission power of the second uplink transmission and the transmission power of the third uplink transmission;

Or the network equipment acquires the first uplink loss corresponding to the second uplink transmission and the second uplink loss corresponding to the third uplink transmission; and the network determines the first power parameter according to the first uplink loss and the second uplink loss.
The method according to claim 9 or 10, wherein the measurement value of the uplink transmission is uplink shared channel received power; or alternatively, the process may be performed,

the uplink measurement value is the demodulation reference signal received power.
The method according to any of claims 9-11, wherein before the network device receives the second uplink transmission, the method further comprises:

the network device transmits a first path loss reference signal and a second path loss reference signal.
A terminal device, characterized in that the terminal device comprises:

an acquisition unit, configured to acquire a first power parameter, where the first power parameter includes at least one of: a power offset, a path loss compensation factor;

a determining unit configured to determine a first transmission power according to the first power parameter;

and the sending unit is used for sending the first uplink transmission by adopting the first sending power.
The terminal device according to claim 13, wherein the acquisition unit is specifically configured to

Receiving first indication information, wherein the first indication information is used for indicating the first power parameter;

acquiring first information, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter;

and acquiring a media access control unit, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.
The terminal device of claim 14, wherein the acquisition unit is further configured to

And acquiring second information, wherein the second information is used for enabling the terminal equipment to update the power parameter.
Terminal device according to any of the claims 13-15, characterized in that,

the sending unit is further configured to send the second uplink transmission and/or the third uplink transmission.
The terminal device of claim 16, wherein the acquisition unit is further configured to

Acquiring a first path loss reference signal and a second path loss reference signal;

the second uplink transmission includes a first power headroom report determined from the first path loss reference signal, and the third uplink transmission includes a second power headroom report determined from the second path loss reference signal.
A network device, the network device comprising:

a transmitting unit, configured to transmit a first power parameter to a terminal device, where the first power parameter includes at least one of: a power offset, a path loss compensation factor;

and the receiving unit is used for receiving the first uplink transmission, and the transmitting power of the first uplink transmission is determined according to the first power parameter.
The network device according to claim 18, wherein the transmitting unit is specifically configured to

Sending first indication information to the terminal equipment, wherein the first indication information is used for indicating the first power parameter;

transmitting first information to the terminal equipment, wherein the first information is used for indicating the mapping relation between the first indication information and the second power parameter;

and sending a media access control unit to the terminal equipment, wherein the media access control unit is used for indicating the mapping relation between the first indication information and the first power parameter.
The network device of claim 19, wherein the network device,

the sending unit is further configured to send second information, where the second information is used to enable the terminal device to update a power parameter.
The network device according to any of the claims 18-20, characterized in that,

the receiving unit is further configured to receive a second uplink transmission, and acquire one or more measured values of the second uplink transmission;

and the determining unit is used for determining the first power parameter according to one or more measured values of the second uplink transmission.
The network device according to any of the claims 18-20, characterized in that,

the receiving unit is further configured to obtain the measured value of the second uplink transmission and the measured value of the third uplink transmission;

the determining unit is further configured to determine the first power parameter according to the measured value of the second uplink transmission and the measured value of the third uplink transmission;

the receiving unit is further configured to obtain a transmission power of the second uplink transmission and a transmission power of the third uplink transmission;

the determining unit is further configured to determine a first power parameter according to the transmission power of the second uplink transmission and the transmission power of the third uplink transmission;

the receiving unit is further configured to obtain a first uplink loss corresponding to the second uplink transmission and a second uplink loss corresponding to the third uplink transmission;

The determining unit is further configured to determine the first power parameter according to the first uplink loss and the second uplink loss.
The network device according to claim 21 or 22, wherein the uplink transmission measurement value is uplink shared channel received power, or,

the uplink measurement value is the demodulation reference signal received power.
The network device according to any of the claims 21-23, characterized in that,

the sending unit is further configured to send a first path loss reference signal and a second path loss reference signal.
An uplink power control apparatus, characterized in that the uplink power control apparatus comprises: a processor coupled to the memory;

the memory is used for storing a computer program;

the processor configured to execute the computer program stored in the memory, to cause the uplink power control apparatus to perform the uplink power control method according to any one of claims 1 to 12.
A computer readable storage medium, characterized in that the computer readable storage medium comprises a computer program or instructions which, when run on a computer, cause the computer to perform the uplink power control method according to any of claims 1-12.
A computer program product, the computer program product comprising: computer program or instructions which, when run on a computer, causes the computer to perform the uplink power control method according to any one of claims 1-12.