CN110708751B - Uplink power control calculation method and device - Google Patents
Uplink power control calculation method and device Download PDFInfo
- Publication number
- CN110708751B CN110708751B CN201910878292.1A CN201910878292A CN110708751B CN 110708751 B CN110708751 B CN 110708751B CN 201910878292 A CN201910878292 A CN 201910878292A CN 110708751 B CN110708751 B CN 110708751B
- Authority
- CN
- China
- Prior art keywords
- gain
- uplink
- terminal
- antenna
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004364 calculation method Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 claims description 27
- 230000009286 beneficial effect Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 description 13
- 238000012545 processing Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000004590 computer program Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000004422 calculation algorithm Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application discloses an uplink power control calculation method and equipment, relates to the field of wireless communication, and is used for uplink power control calculation. The uplink power control calculation method comprises the following steps: the network equipment acquires diversity gain of a base station receiving antenna, beam forming gain of a base station transmitting antenna, diversity gain of a terminal receiving antenna and beam forming gain of a terminal transmitting antenna; the network equipment calculates the gain difference delta G of the uplink and downlink antenna system according to the diversity gain of the base station receiving antenna, the beam forming gain of the base station transmitting antenna, the diversity gain of the terminal receiving antenna and the beam forming gain of the terminal transmitting antenna; the network equipment sends the gain difference delta G of the uplink and downlink antenna systems to the terminal equipment; the terminal equipment receives the gain difference delta G of the uplink and downlink antenna systems sent by the network equipment; and the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems. The embodiment of the application is applied to uplink power control calculation.
Description
Technical Field
The present application relates to the field of wireless communications, and in particular, to a method and device for calculating uplink power control.
Background
In the current uplink power control algorithm, initial open-loop power control is estimated based on User Equipment (UE) for downlink Path Loss (PL). The UE performs downlink PL estimation by measuring a downlink Reference Signal Receiving Power (RSRP) and subtracting the RSRP from a known reference signal power.
In a fourth generation mobile communication technology (4G) network, antennas of a 4G base station are basically 2 transmit modules (T), 2 receive modules (R), 4T4R or 8T8R, and antennas of a 4G terminal are basically 1T2R, so that the number of antennas between the terminal and the base station in the 4G network is not greatly different, and the gains of the antenna systems in the downlink and the uplink are equivalent, and the downlink PL can be obtained by directly subtracting the known reference signal power from the downlink RSRP and considering that the downlink PL is approximately equal to the uplink PL.
In the 5th generation mobile communication technology (5G) network, the number of antennas is generally up to 64T64R or more due to the adoption of large-scale antenna technology, and the antennas of 5G terminals are basically 2T4R or 4T 8R. Based on the multi-antenna technology, in the downlink direction, downlink signals at a transmitting end of a base station are generally transmitted by adopting a beam forming technology, and a receiving end of a terminal generally receives the signals by adopting a receiving diversity technology; in the uplink direction, the terminal transmitting end may use fixed single-antenna transmission, or antenna selection transmission or multi-antenna transmission based on different terminal capabilities, and the base station receiving end either uses receive diversity or performs weighted reception in combination with recently used beamforming information. The uplink and downlink adopt different antenna algorithms, so that the antenna gains of the downlink and uplink are different, and the default in the prior art is the same, so that the calculated uplink power control is inaccurate, and the problems of terminal power waste, terminal standby time reduction, uplink data rate reduction, downlink data rate reduction and the like are caused.
Disclosure of Invention
The embodiment of the application provides an uplink power control calculation method and device, which are used for solving the problem that the existing uplink power control calculation method is inaccurate.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:
in a first aspect, an embodiment of the present application provides an uplink power control calculation method, where the method includes:
the network equipment acquires diversity gain of a base station receiving antenna, beam forming gain of a base station transmitting antenna, diversity gain of a terminal receiving antenna and beam forming gain of a terminal transmitting antenna;
the network equipment calculates the gain difference delta G of the uplink and downlink antenna system according to the diversity gain of the base station receiving antenna, the beam forming gain of the base station transmitting antenna, the diversity gain of the terminal receiving antenna and the beam forming gain of the terminal transmitting antenna;
and the network equipment sends the gain difference delta G of the uplink and downlink antenna systems to the terminal equipment so that the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems.
In a second aspect, an embodiment of the present application provides an uplink power control calculation method, where the method includes:
the method comprises the steps that terminal equipment receives an uplink and downlink antenna system gain difference delta G sent by network equipment, wherein the uplink and downlink antenna system gain difference delta G is obtained by base station receiving antenna diversity gain, base station transmitting antenna beam forming gain, terminal receiving antenna diversity gain and terminal transmitting antenna beam forming gain;
and the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems.
In a third aspect, an embodiment of the present application provides a network device, which includes an obtaining unit, a calculating unit, and a sending unit. Specifically, the method comprises the following steps:
the device comprises an acquisition unit, a receiving unit and a transmitting unit, wherein the acquisition unit is used for acquiring base station receiving antenna diversity gain, base station transmitting antenna beam forming gain, terminal receiving antenna diversity gain and terminal transmitting antenna beam forming gain;
the calculating unit is used for calculating the gain difference delta G of the uplink and downlink antenna systems according to the base station receiving antenna diversity gain, the base station transmitting antenna beam forming gain, the terminal receiving antenna diversity gain and the terminal transmitting antenna beam forming gain which are acquired by the acquiring unit;
and the sending unit is used for sending the gain difference delta G of the uplink and downlink antenna systems calculated by the calculating unit to the terminal equipment.
In a fourth aspect, an embodiment of the present application provides a terminal device, including a receiving unit and a computing unit. Specifically, the method comprises the following steps:
the receiving unit is used for receiving the gain difference delta G of the uplink and downlink antenna systems sent by the network equipment, wherein the gain difference delta G of the uplink and downlink antenna systems is obtained by the diversity gain of a base station receiving antenna, the beam forming gain of a base station transmitting antenna, the diversity gain of a terminal receiving antenna and the beam forming gain of a terminal transmitting antenna;
and the calculating unit is used for calculating uplink power control according to the calculated gain difference delta G of the uplink and downlink antenna systems received by the receiving unit.
In a fifth aspect, a computer readable storage medium storing one or more programs is provided, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the uplink power control calculation method according to the first aspect or the second aspect.
In a sixth aspect, a computer program product containing instructions is provided, which when executed on a computer, causes the computer to execute the uplink power control calculation method according to the first aspect or the second aspect.
In a seventh aspect, a network device is provided, including: the processor calls the program stored in the memory to execute the uplink power control calculation method of the first aspect.
In an eighth aspect, there is provided a terminal device comprising: the processor calls the program stored in the memory to execute the uplink power control calculation method of the second aspect.
According to the uplink power control calculation method and the uplink power control calculation equipment provided by the embodiment of the application, network equipment acquires base station receiving antenna diversity gain, base station transmitting antenna beam forming gain, terminal receiving antenna diversity gain and terminal transmitting antenna beam forming gain; the network equipment calculates the gain difference delta G of the uplink and downlink antenna system according to the diversity gain of the base station receiving antenna, the beam forming gain of the base station transmitting antenna, the diversity gain of the terminal receiving antenna and the beam forming gain of the terminal transmitting antenna; the network equipment sends the gain difference delta G of the uplink and downlink antenna systems to the terminal equipment; the terminal equipment receives the gain difference delta G of the uplink and downlink antenna systems sent by the network equipment; and the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems. The method and the device realize accurate calculation of the uplink power control and solve the problem of inaccurate calculation of the uplink power control.
Drawings
Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a terminal device and a network device according to an embodiment of the present application;
fig. 3 is a first flowchart of an uplink power control calculation method according to an embodiment of the present application;
fig. 4 is a second flowchart of an uplink power control calculation method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
The communication system to which the present application is applied is shown in fig. 1, and includes a single or a plurality of terminal devices 10, and a single or a plurality of network devices 20. As shown in fig. 1 at a, a single network device 20 may transmit data or control signaling to a single or multiple terminal devices 10. As shown in fig. 1B, multiple network devices 20 may also transmit data or control signaling for a single terminal device 10 at the same time.
In the embodiment of the present application, a network device is a device deployed in a radio access network to provide a wireless communication function for a terminal device. Network devices may include various forms of macro base stations, micro base stations (also known as small stations), relay stations, access points, and the like. In systems using different radio access technologies, names of network devices may be different, such as Base Transceiver Station (BTS) in a global system for mobile communication (GSM) or code division multiple access CDMA (code division multiple access) network, nb (nodeb) in Wideband Code Division Multiple Access (WCDMA), eNB or enodeb (evolved nodeb) in Long Term Evolution (LTE). The network device may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network device may also be a base station device in a future 5G network or a network device in a future evolved Public Land Mobile Network (PLMN) network. The network device may also be a wearable device or a vehicle mounted device. The embodiments of the present application take a network device as an example for description, but are not intended to be limiting.
In embodiments of the present application, the terminal devices involved may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication capabilities. The terminal may be a Mobile Station (MS), a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem (modem), a handheld device (handset), a laptop computer (laptop computer), a Machine Type Communication (MTC) terminal, or the like.
The communication between each network device and each terminal device in the communication system shown in fig. 1 can also be represented in another form.
As shown in fig. 2, the terminal device 10 includes a processor 101, a memory 102, and a transceiver 103. The processor 101, the transceiver 103 and the memory 102 can communicate with each other via the internal connection path to transmit control and/or data signals, the memory 102 is used for storing a computer program, and the processor 101 is used for calling and running the computer program from the memory 102 to control the transceiver 103 to transmit and receive signals. The transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. Receiver 1032 may be configured to receive transmission control information via antenna 1033, and transmitter 1031 may be configured to transmit information to network device 20 via antenna 1033.
As shown in fig. 2, the network device 20 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 201 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 202. The RRU 201 may be referred to as a transceiver unit, and optionally may also be referred to as a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 2011 and a radio frequency unit 2012. Alternatively, the transceiver unit may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver or receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter or transmitting circuit). The RRU 201 is mainly used for transceiving radio frequency signals and converting the radio frequency signals and baseband signals, for example, for sending indication information to a terminal device. The BBU 202 is mainly used for performing baseband processing, controlling network equipment, and the like. The RRU 201 and the BBU 202 may be physically disposed together or may be physically disposed separately, that is, distributed base stations.
The BBU 202 is a control center of a network device, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU may be used to control a network device to execute an operation flow related to the network device in the method embodiment of the present application.
In an example, the BBU 202 may be formed by one or more boards, and the boards may support a radio access network of a single access system (e.g., an LTE network) together, or may support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks) respectively. The BBU 202 also includes a memory 2021 and a processor 2022. The memory 2021 is used to store the necessary instructions and data. The processor 2022 is configured to control the network device to perform necessary actions, for example, to control the network device to execute the operation flow related to the network device in the method embodiment of the present application. The memory 2021 and the processor 2022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.
The network device is not limited to the above-described embodiment, and may be in another embodiment: for example: the antenna comprises a BBU (baseband unit) and an Adaptive Radio Unit (ARU), or the BBU and an Active Antenna Unit (AAU); the CPE may be a Customer Premise Equipment (CPE) or another type, and the present application is not limited thereto.
The processor 101 is configured to execute computer-executable instructions stored in the memory 102, so as to implement the steps or actions of each network element or device in the embodiments described below in the present application. The processor 101 may be a chip. For example, the Field Programmable Gate Array (FPGA) may be an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Micro Controller Unit (MCU), a Programmable Logic Device (PLD) or other integrated chips.
The memory 102 is used for storing computer-executable instructions for performing the present solution and is controlled by the processor 101 for execution. The memory 102 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile 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. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
The processor 2022 is used for executing computer-executable instructions stored in the memory 2021, thereby implementing steps or actions of each network element or device in the embodiments described below in the present application. The processor 2022 may be a chip. For example, the device may be an FPGA, an ASIC, an SoC, a CPU, an NP, a DSP, an MCU, a PLD, or another integrated chip.
The memory 2021 is used for storing computer-executable instructions for performing aspects of the present application and is controlled by the processor 2022 for execution. The memory 2021 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a ROM, PROM, EPROM, EEPROM, or flash memory, among others. Volatile memory can be RAM, which acts as external cache memory. By way of example and not limitation, many forms of RAM are available, such as SRAM, DRAM, SDRAM, DDR SDRAM, ESDRAM, SLDRAM, and DR RAM. It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
The following problems are caused by inaccurate calculation of the existing uplink power control:
if the gain of the downlink antenna is obviously higher than that of the uplink antenna, the initial power of random access is relatively low, and the network can be successfully accessed only after power is increased for many times, so that the access delay is too long, the terminal power is consumed, and the standby time is reduced; the Sounding Reference Signal (SRS) transmission power is relatively low, so that the SRS signal transmission reliability is reduced, and if the beamforming accuracy based on the SRS is reduced, the downlink data rate is affected. When a Physical Uplink Control Channel (PUCCH) adopts open loop power control, the transmission power of the PUCCH channel is also relatively low, which results in reduced reliability of Uplink Control Information (UCI) transmission; affecting the downlink data rate; when a Physical Uplink Shared Channel (PUSCH) adopts open loop power control, the PUSCH transmission power is also relatively low, which causes poor uplink signal quality and affects the uplink data rate;
if the gain of the downlink antenna is obviously lower than that of the uplink antenna, the initial random access power is relatively high, the background noise of an access channel and an adjacent base station is increased, and the uplink capacity of the network is reduced. In addition, the power of the terminal is wasted, thereby reducing the standby time. In addition, the transmitting power of the SRS channel, the PUCCH and the PUSCH using open loop power control is relatively high, so that the base station noise and the uplink rate are improved.
The new uplink power control calculation method is invented aiming at the problems, the network equipment calculates the gain difference delta G of the uplink and downlink antenna system and sends the gain difference delta G to the terminal equipment, and the terminal equipment applies the gain difference delta G to the uplink path loss calculation to obtain accurate uplink power control, so that the problems are solved.
Examples 1,
An embodiment of the present application provides an uplink power control calculation method, as shown in fig. 3, the uplink power control calculation method includes:
s301, the network equipment acquires diversity gain of a base station receiving antenna, beam forming gain of a base station transmitting antenna, diversity gain of a terminal receiving antenna and beam forming gain of a terminal transmitting antenna.
The antenna diversity gain, the base station transmitting antenna beam forming gain, the terminal receiving antenna diversity gain and the terminal transmitting antenna beam forming gain are all obtained through pre-configuration. The beam forming gain includes beam forming in multiple modes such as antenna selection, weight summation and the like.
S302, the network equipment calculates the gain difference delta G of the uplink and downlink antenna system according to the diversity gain of the base station receiving antenna, the beam forming gain of the base station transmitting antenna, the diversity gain of the terminal receiving antenna and the beam forming gain of the terminal transmitting antenna.
Specifically, step S302 specifically includes: and calculating the gain difference deltaG of the uplink and downlink antenna systems according to the formula deltaG (base station receiving antenna diversity gain-base station transmitting antenna beam forming gain) + (terminal receiving antenna diversity gain-terminal transmitting antenna beam forming gain).
The above formula is obtained through an uplink antenna system gain formula and a downlink antenna system gain formula, and specifically includes:
and the gain of the uplink antenna system is equal to the single-channel gain of the terminal transmitting antenna, the beamforming gain of the terminal transmitting antenna, the single-channel gain of the base station receiving antenna and the diversity gain of the base station receiving antenna.
The system gain of the downlink antenna is equal to the single-channel gain of the transmitting antenna of the base station, the beam forming gain of the transmitting antenna of the base station, the single-channel gain of the receiving antenna of the terminal and the diversity gain of the receiving antenna of the terminal.
The gain difference of the uplink and downlink antenna systems can be obtained by means of evaluation means such as simulation, actual measurement and the like. In the evaluation process, the type, the occupation ratio and the user distribution of the terminal equipment of the current network are also considered, and the weighting processing is carried out by combining the actual forming capability of the base station.
Because the single-channel gain of the base station transmitting antenna is equal to the single-channel gain of the base station receiving antenna, and the single-channel gain of the terminal transmitting antenna is equal to the single-channel gain of the terminal receiving antenna, the gain difference Δ G of the uplink and downlink antenna systems is equal to (base station receiving antenna diversity gain-base station transmitting antenna beam forming gain) + (terminal receiving antenna diversity gain-terminal transmitting antenna beam forming gain).
And S303, the network equipment sends the gain difference delta G of the uplink and downlink antenna systems to the terminal equipment, so that the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems.
The sending mode is to configure and broadcast the gain difference deltaG of the uplink and downlink antenna systems in the network equipment.
S304, the terminal equipment receives the gain difference delta G of the uplink and downlink antenna systems sent by the network equipment.
The receiving mode is that the terminal equipment receives the network equipment broadcast to obtain the gain difference delta G of the uplink and downlink antenna systems.
S305, the terminal device calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems.
Specifically, as shown in fig. 4, step S305 includes:
s3051, calculating uplink path loss PL by the terminal equipment according to the gain difference delta G of the uplink and downlink antenna systemsUL。
Specifically, step S3051 specifically includes: according to the formula PLUL＝PLDL- Δ G calculating the uplink loss PLULWherein PLULFor uplink loss, PLDLFor the lower linkAnd the loss delta G is the gain difference of an uplink antenna system and a downlink antenna system, and the downlink path loss is obtained by measuring downlink RSRP and subtracting the known reference signal power by the terminal equipment.
S3052, the terminal equipment loses PL according to the uplink pathULAnd calculating uplink power control.
Specifically, step S3052 specifically includes: will uplink path loss PLULAnd the uplink power control is carried into an uplink power control calculation formula to calculate the uplink power control. The uplink power control formula comprises:
the Physical Random Access Channel (PRACH) uplink power control formula is as follows:
wherein i represents a subframe, PCMAXIs the maximum transmit power, P, of the UEREAMBLE_RECEIVED_TARGET_POWERIs the target preamble transmission power, PLULIs the downlink path loss.
The PUCCH uplink power control formula is:
wherein i represents a subframe, PCMAXIs the maximum transmit power, P, of the UEO_PUCCHIs the nominal power, PL, set semi-statically for all UEs in the cellULIs the downlink path loss, h (n)CQI,nHARQ，nSR) Is a value that depends on the PUCCH format,F_PUCCH(F) indicating the offset of the different formats of PUCCH relative to the 1a format, g (i) is an adjustment value formed by the current PUCCH power control.
The PUSCH uplink power control formula is as follows:
wherein i represents a subframe, PCMAXIs the maximum transmit power, M, of the UEPUSCH(i) Watch (A)Indicating the number of RBs used for PUSCH transmission in subframe i, PO_PUCCHIs the nominal power, P, set semi-statically for all UEs in the cellO_PUSCH(j) Is a semi-statically set power reference value, α (j) is the cell-specific compensation for path loss, PLULIs downlink path loss, TF is a power adjustment value based on a Modulation and Coding Scheme (MCS), and f (i) is an adjustment value for PUSCH current power control.
The SRS uplink power control formula is as follows:
wherein i represents a subframe, PCMAXIs the maximum transmit power, P, of the UESRS_OFFSETDenotes the power offset, M, of the SRS relative to the PUSCH dataSRSDenotes the transmission bandwidth, P, of the SRSO_PUSCH(j) Is a semi-statically set power reference value, α (j) is the cell-specific compensation for path loss, PLULIs the downlink path loss, and f (i) is the current power control adjustment value.
For example, if the terminal device accesses the PRACH channel, if the reference signal power is 18 decibel milliwatts (decibel relative to one milliwatt dbm), the maximum power P of the terminal device is PCMAX23dBm, RSRP-100 dBm received by the terminal device, target preamble transmission power PREAMBLE_RECEIVED_TARGET_POWERThe base station transmitting antenna beam forming gain is 15dBm, the base station receiving antenna diversity gain is 8dBm, the terminal transmitting antenna beam forming gain is 0dBm, and the terminal receiving antenna diversity gain is 3 dBm.
Then the downlink path loss:
PLDLreference signal power-RSRP-18 + 100-118 dBm.
The gain difference of the uplink and downlink antenna systems is as follows:
Δ G ═ base station receive antenna diversity gain-base station transmit antenna beamforming gain) + (terminal receive antenna diversity gain-terminal transmit antenna beamforming gain) — (8-15) + (3-0) — 4 dBm.
The uplink path loss is:
PLUL＝PLDL-ΔG。＝118+4＝122dBm。
the uplink power control of the PRACH channel is as follows:
PPRACH＝min{PCMAX，PREAMBLE_RECEIVED_TARGET_POWER+PLUL}＝min{23，-105+122}＝17dBm。
according to the uplink power control calculation method and the uplink power control calculation equipment provided by the embodiment of the application, network equipment acquires base station receiving antenna diversity gain, base station transmitting antenna beam forming gain, terminal receiving antenna diversity gain and terminal transmitting antenna beam forming gain; the network equipment calculates the gain difference delta G of the uplink and downlink antenna system according to the diversity gain of the base station receiving antenna, the beam forming gain of the base station transmitting antenna, the diversity gain of the terminal receiving antenna and the beam forming gain of the terminal transmitting antenna; the network equipment sends the gain difference delta G of the uplink and downlink antenna systems to the terminal equipment; the terminal equipment receives the gain difference delta G of the uplink and downlink antenna systems sent by the network equipment; and the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems. The method and the device realize accurate calculation of the uplink power control and solve the problem of inaccurate calculation of the uplink power control.
Examples 2,
An embodiment of the present application provides a network device, as shown in fig. 5, the network device 500 includes: acquisition section 501, calculation section 502, and transmission section 503. The uplink power control computing device is configured to execute the uplink power control computing method. Specifically, the method comprises the following steps:
an obtaining unit 501, configured to obtain a diversity gain of a base station receiving antenna, a beamforming gain of a base station transmitting antenna, a diversity gain of a terminal receiving antenna, and a beamforming gain of a terminal transmitting antenna.
A calculating unit 502, configured to calculate a gain difference Δ G between the uplink and downlink antenna systems according to the base station receiving antenna diversity gain, the base station transmitting antenna beam forming gain, the terminal receiving antenna diversity gain, and the terminal transmitting antenna beam forming gain acquired by the acquiring unit 501.
Specifically, the calculating unit 502 is specifically configured to:
and calculating the gain difference deltaG of the uplink and downlink antenna systems according to the formula deltaG (base station receiving antenna diversity gain-base station transmitting antenna beam forming gain) + (terminal receiving antenna diversity gain-terminal transmitting antenna beam forming gain).
A sending unit 503, configured to send the uplink and downlink antenna system gain difference Δ G calculated by the calculating unit 502 to the terminal device.
An embodiment of the present application provides a terminal device, as shown in fig. 6, where the terminal device 600 includes: receiving section 601 and calculating section 602. The uplink power control computing device is configured to execute the uplink power control computing method. Specifically, the method comprises the following steps:
a receiving unit 601, configured to receive an uplink and downlink antenna system gain difference Δ G sent by a network device, where the uplink and downlink antenna system gain difference Δ G is obtained by a base station receive antenna diversity gain, a base station transmit antenna beam forming gain, a terminal receive antenna diversity gain, and a terminal transmit antenna beam forming gain.
A calculating unit 602, configured to calculate uplink power control according to the uplink and downlink antenna system gain difference Δ G calculated by the receiving unit 601.
Specifically, the calculating unit 602 is specifically configured to:
calculating uplink path loss PL according to gain difference delta G of uplink and downlink antenna systemsUL。
According to the uplink loss PLULAnd calculating uplink power control.
Specifically, the calculating unit 602 is specifically configured to:
according to the formula PLUL＝PLDL- Δ G calculating the uplink loss PLULWherein PLULFor uplink loss, PLDLFor downlink path loss, Δ G is the gain difference of the uplink and downlink antenna systems.
According to the network equipment and the terminal equipment provided by the embodiment of the application, the network equipment acquires diversity gain of a base station receiving antenna, beamforming gain of a base station transmitting antenna, diversity gain of a terminal receiving antenna and beamforming gain of a terminal transmitting antenna; the network equipment calculates the gain difference delta G of the uplink and downlink antenna system according to the diversity gain of the base station receiving antenna, the beam forming gain of the base station transmitting antenna, the diversity gain of the terminal receiving antenna and the beam forming gain of the terminal transmitting antenna; the network equipment sends the gain difference delta G of the uplink and downlink antenna systems to the terminal equipment; the terminal equipment receives the gain difference delta G of the uplink and downlink antenna systems sent by the network equipment; and the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems. The method and the device realize accurate calculation of the uplink power control and solve the problem of inaccurate calculation of the uplink power control.
Embodiments of the present application provide a computer-readable storage medium storing one or more programs, the one or more programs including instructions, which when executed by a computer, cause the computer to perform an uplink power control calculation method as described in fig. 3-4.
Embodiments of the present application provide a computer program product containing instructions that, when executed on a computer, cause the computer to perform the uplink power control calculation method as described in fig. 3-4.
An embodiment of the present application provides a network device, including: the uplink power control method comprises a processor and a memory, wherein the memory is used for storing programs, and the processor calls the programs stored in the memory to execute the uplink power control calculation method shown in the figure 3.
An embodiment of the present application provides a terminal device, including: the uplink power control computing method comprises a processor and a memory, wherein the memory is used for storing programs, and the processor calls the programs stored in the memory to execute the uplink power control computing method shown in the figures 3-4.
Since the network device, the terminal device, the computer-readable storage medium, and the computer program product in the embodiments of the present application may be applied to the uplink power control calculation method, the technical effects obtained by the method may also refer to the embodiments of the method, and the embodiments of the present application are not described herein again.
The above units may be individually configured processors, or may be implemented by being integrated into one of the processors of the controller, or may be stored in a memory of the controller in the form of program codes, and the functions of the above units may be called and executed by one of the processors of the controller. The processor described herein may be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present application.
It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to 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 implementation. 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 can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Claims (11)
1. An uplink power control calculation method is characterized by comprising the following steps:
the network equipment acquires diversity gain of a base station receiving antenna, beam forming gain of a base station transmitting antenna, diversity gain of a terminal receiving antenna and beam forming gain of a terminal transmitting antenna;
the network equipment calculates the gain difference deltaG of the uplink and downlink antenna systems according to the diversity gain of the base station receiving antenna, the beam forming gain of the base station transmitting antenna, the diversity gain of the terminal receiving antenna and the beam forming gain of the terminal transmitting antenna, and specifically comprises the following steps:
calculating the gain difference deltaG of the uplink and downlink antenna systems according to the formula deltaG (base station receiving antenna diversity gain-base station transmitting antenna beam forming gain) + (terminal receiving antenna diversity gain-terminal transmitting antenna beam forming gain);
and the network equipment sends the gain difference deltaG of the uplink and downlink antenna systems to terminal equipment so that the terminal equipment calculates uplink power control according to the gain difference deltaG of the uplink and downlink antenna systems.
2. An uplink power control calculation method is characterized by comprising the following steps:
the method comprises the following steps that terminal equipment receives an uplink and downlink antenna system gain difference delta G sent by network equipment, wherein the uplink and downlink antenna system gain difference delta G is obtained by base station receiving antenna diversity gain, base station transmitting antenna beam forming gain, terminal receiving antenna diversity gain and terminal transmitting antenna beam forming gain, and specifically comprises the following steps:
calculating the gain difference deltaG of the uplink and downlink antenna systems according to the formula deltaG (base station receiving antenna diversity gain-base station transmitting antenna beam forming gain) + (terminal receiving antenna diversity gain-terminal transmitting antenna beam forming gain);
and the terminal equipment calculates uplink power control according to the gain difference delta G of the uplink and downlink antenna systems.
3. The uplink power control calculation method according to claim 2, wherein the terminal device calculates uplink power control according to the uplink and downlink antenna system gain difference Δ G, specifically:
the terminal equipment calculates the uplink path loss PL according to the gain difference delta G of the uplink and downlink antenna systemUL；
The terminal equipment is used for transmitting the uplink loss PLULAnd calculating uplink power control.
4. The uplink power control calculation method according to claim 2, wherein the terminal device calculates uplink path loss PL according to the uplink and downlink antenna system gain difference Δ GULThe method specifically comprises the following steps: according to the formula PLUL＝PLDL- Δ G calculating the uplink loss PLULWherein PLULFor uplink loss, PLDLFor downlink path loss, Δ G is the gain difference of the uplink and downlink antenna systems.
5. A network device, comprising:
the device comprises an acquisition unit, a receiving unit and a transmitting unit, wherein the acquisition unit is used for acquiring base station receiving antenna diversity gain, base station transmitting antenna beam forming gain, terminal receiving antenna diversity gain and terminal transmitting antenna beam forming gain;
the calculating unit is used for calculating the gain difference delta G of the uplink and downlink antenna systems according to the base station receiving antenna diversity gain, the base station transmitting antenna beam forming gain, the terminal receiving antenna diversity gain and the terminal transmitting antenna beam forming gain which are acquired by the acquiring unit;
the computing unit is specifically configured to:
calculating the gain difference deltaG of the uplink and downlink antenna systems according to the formula deltaG (base station receiving antenna diversity gain-base station transmitting antenna beam forming gain) + (terminal receiving antenna diversity gain-terminal transmitting antenna beam forming gain);
and the sending unit is used for sending the gain difference delta G of the uplink and downlink antenna systems calculated by the calculating unit to the terminal equipment.
6. A terminal device, comprising:
a receiving unit, configured to receive an uplink and downlink antenna system gain difference Δ G sent by a network device, where the uplink and downlink antenna system gain difference Δ G is obtained by a base station receiving antenna diversity gain, a base station transmitting antenna beam forming gain, a terminal receiving antenna diversity gain, and a terminal transmitting antenna beam forming gain;
a calculating unit, configured to calculate uplink power control according to the calculated gain difference Δ G of the uplink and downlink antenna systems received by the receiving unit;
the computing unit is specifically configured to:
and calculating the gain difference deltaG of the uplink and downlink antenna systems according to the formula deltaG (base station receiving antenna diversity gain-base station transmitting antenna beam forming gain) + (terminal receiving antenna diversity gain-terminal transmitting antenna beam forming gain).
7. The terminal device according to claim 6, wherein the computing unit is specifically configured to:
calculating the uplink path loss PL according to the gain difference deltaG of the uplink and downlink antenna systemUL；
According to the uplink loss PLULAnd calculating uplink power control.
8. The terminal device according to claim 6, wherein the computing unit is specifically configured to:
according to the formula PLUL＝PLDL- Δ G calculating the uplink loss PLULWherein PLULFor uplink loss, PLDLFor downlink path loss, Δ G is added for uplink and downlink antenna systemThe difference is beneficial.
9. A computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computer, cause the computer to perform the uplink power control calculation method of claim 1 or perform the uplink power control calculation method of any one of claims 2-4.
10. A network device, comprising: the uplink power control computing method comprises a processor and a memory, wherein the memory is used for storing programs, and the processor calls the programs stored in the memory to execute the uplink power control computing method according to claim 1.
11. A terminal device, comprising: a processor and a memory, the memory being used for storing a program, the processor calling the program stored in the memory to execute the uplink power control calculation method according to any one of claims 2 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878292.1A CN110708751B (en) | 2019-09-17 | 2019-09-17 | Uplink power control calculation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910878292.1A CN110708751B (en) | 2019-09-17 | 2019-09-17 | Uplink power control calculation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110708751A CN110708751A (en) | 2020-01-17 |
| CN110708751B true CN110708751B (en) | 2022-04-26 |
Family
ID=69194979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910878292.1A Active CN110708751B (en) | 2019-09-17 | 2019-09-17 | Uplink power control calculation method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110708751B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112022014340A2 (en) * | 2020-01-21 | 2022-09-13 | Huawei Tech Co Ltd | RANDOM ACCESS PREAMBLE TRANSMISSION METHOD AND DEVICE |
| CN114449636A (en) * | 2022-02-25 | 2022-05-06 | Oppo广东移动通信有限公司 | Power determination device, power determination method and terminal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094015A (en) * | 2006-06-23 | 2007-12-26 | 普天信息技术研究院 | Method for controlling initial emission power in open loop in mobile communication system |
| CN102638894A (en) * | 2012-04-27 | 2012-08-15 | 电信科学技术研究院 | Method and equipment for distributing PDSCH (physical downlink shared channel) power |
| CN103747496A (en) * | 2013-12-31 | 2014-04-23 | 华为技术有限公司 | Methods and device for improving uplink channel quality in heterogeneous network and UE (user equipment) |
| CN103945504A (en) * | 2013-01-18 | 2014-07-23 | 华为技术有限公司 | Power control method and equipment |
| CN104412673A (en) * | 2013-04-25 | 2015-03-11 | 华为技术有限公司 | Method for controlling uplink transmission power of inter-base station carrier aggregation, base station and device |
| CN109151968A (en) * | 2017-06-16 | 2019-01-04 | 华为技术有限公司 | A kind of power determining method, equipment and system |
| CN110169142A (en) * | 2017-01-05 | 2019-08-23 | 华为技术有限公司 | Uplink signal transmission power control |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8472993B2 (en) * | 2010-12-16 | 2013-06-25 | Intel Corporation | Downlink and uplink pathloss estimation gap adjustment scheme for wireless systems |
| KR102008467B1 (en) * | 2012-12-27 | 2019-08-07 | 삼성전자주식회사 | Uplink power control method and apparatus in a beamforming based wireless communication system |
| US10425900B2 (en) * | 2017-05-15 | 2019-09-24 | Futurewei Technologies, Inc. | System and method for wireless power control |
-
2019
- 2019-09-17 CN CN201910878292.1A patent/CN110708751B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101094015A (en) * | 2006-06-23 | 2007-12-26 | 普天信息技术研究院 | Method for controlling initial emission power in open loop in mobile communication system |
| CN102638894A (en) * | 2012-04-27 | 2012-08-15 | 电信科学技术研究院 | Method and equipment for distributing PDSCH (physical downlink shared channel) power |
| CN103945504A (en) * | 2013-01-18 | 2014-07-23 | 华为技术有限公司 | Power control method and equipment |
| CN104412673A (en) * | 2013-04-25 | 2015-03-11 | 华为技术有限公司 | Method for controlling uplink transmission power of inter-base station carrier aggregation, base station and device |
| CN103747496A (en) * | 2013-12-31 | 2014-04-23 | 华为技术有限公司 | Methods and device for improving uplink channel quality in heterogeneous network and UE (user equipment) |
| CN110169142A (en) * | 2017-01-05 | 2019-08-23 | 华为技术有限公司 | Uplink signal transmission power control |
| CN109151968A (en) * | 2017-06-16 | 2019-01-04 | 华为技术有限公司 | A kind of power determining method, equipment and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110708751A (en) | 2020-01-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10959183B2 (en) | Uplink power control method and apparatus | |
| US10939386B2 (en) | Method and device for determining transmission power, and terminal and storage medium | |
| US10785729B2 (en) | Method and device for controlling uplink power | |
| CN110831135B (en) | Power control method and device | |
| US20220116882A1 (en) | Reference signal determination method and device, and ue | |
| CN108271175B (en) | Power control method and communication device | |
| CN114731590A (en) | Power control parameter determination method, terminal, network device and storage medium | |
| CN114175743B (en) | Method and device for signal transmission and method and device for signal reception | |
| CN108712776A (en) | Method and apparatus for delivering power control | |
| WO2022042257A1 (en) | Method and device for power configuration | |
| CN112867129A (en) | Power headroom reporting and sending method and device | |
| CN114145049B (en) | Method, device and equipment for determining uplink transmitting power | |
| CN110708751B (en) | Uplink power control calculation method and device | |
| CN115244961B (en) | Method for selecting beam and communication device | |
| CN112673680B (en) | Power determination method, device and equipment | |
| CN110650522B (en) | Closed-loop power control method, network side equipment and terminal | |
| WO2024073977A1 (en) | Methods and apparatuses for srs power headroom report | |
| US20220201626A1 (en) | Information reporting method and apparatus, and user equipment | |
| CN117560658A (en) | Communication method and communication device | |
| US20230421216A1 (en) | Methods and devices for beamforming | |
| CN117015018A (en) | Power control method and device, terminal and network equipment | |
| CN118511604A (en) | Power adjustment method, device and storage medium | |
| CN118660334A (en) | Method and equipment for acquiring path loss, communication device and medium | |
| CN117812705A (en) | Transmitting power distribution method and user equipment thereof | |
| CN111448831A (en) | Open loop power control method, apparatus and computer readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |