CN109479205A - Antenna calibration method, device and base station - Google Patents
Antenna calibration method, device and base station Download PDFInfo
- Publication number
- CN109479205A CN109479205A CN201680087752.3A CN201680087752A CN109479205A CN 109479205 A CN109479205 A CN 109479205A CN 201680087752 A CN201680087752 A CN 201680087752A CN 109479205 A CN109479205 A CN 109479205A
- Authority
- CN
- China
- Prior art keywords
- time slot
- base station
- duration
- antenna calibration
- silent time
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Abstract
The embodiment of the present invention provides a kind of antenna calibration method, device and base station, which comprises base station determines position and the duration of silent time slot, wherein the base station and terminal not receiving and transmitting signal in the silence time slot；The base station carries out antenna calibration in the silent time slot.Using antenna calibration method provided in an embodiment of the present invention, device and base station, interference of calibrating sequence of base station during carrying out antenna calibration in receiving channel by external signal can be prevented, guarantees the precision of antenna calibration.
Description
The present embodiments relate to wireless communication technique more particularly to a kind of antenna calibration methods, device and base station.
In a wireless communication system, for time division duplex (Time Division Duplexing, referred to as: TDD) base station system, since uplink and downlink use identical carrier frequency, theoretically it is believed that ascending physical signal propagation channel and downlink physical propagation channel have reciprocity.But in the actual implementation process, the radio-frequency head of every antenna needs two sets of circuits to be respectively completed sending and receiving for signal.Due to the fabrication error of hardware aspect, amplifier nonlinearity distortion, and the influence of the factors to the characteristic response of each radio circuit such as working frequency, time and external environment (such as temperature, humidity), two sets of circuits for being difficult to realize radio-frequency head have completely the same characteristic.Therefore, for baseband signal, equally to channel multiplied by different coefficients, the reciprocity for resulting in channel is impaired for sendaisle and receiving channel.In order to eliminate influence of the deviation between each radio-frequency head receiving channel and sendaisle to channel, guarantee the reciprocity of radio-frequency channel, it needs to calibrate radio-frequency channel, to guarantee the consistency of the radio-frequency head sendaisle amplitude and phase of multiple far-end RF modules (Radio Remote Unit, referred to as: RRU).
In the prior art, the method calibrated to radio-frequency channel is: base station system sends identical receiving channels calibration sequence to each radio-frequency head by reference to transmission channel, each receiving channel of base station system calculates the correction coefficient of corresponding receiving channel according to the receiving channels calibration sequence after receiving the receiving channels calibration sequence, and carries out amplitude-phase calibration to the corresponding receiving channel according to the correction coefficient.
It is completed since radio-frequency channel calibration process is the receiving channels calibration sequence that is received according to base station system, if calibrating the moment, the receiving channel of the base station system also receives other external signal inputs, such as UE sends uplink signal, the signal-to-noise ratio decline that will lead to base station receiving channel alignment sequence, causes calibration accuracy to reduce even calibration failure.
Summary of the invention
The embodiment of the present invention provides a kind of antenna calibration method, device and base station, for solving calibration accuracy lower technical problem when base station system in the prior art carries out antenna calibration.In a first aspect, the embodiment of the present invention provides a kind of antenna calibration method, which comprises
Base station determines position and the duration of silent time slot, wherein base station and the terminal equal not receiving and transmitting signal in the silent time slot；Base station carries out antenna calibration in the silent time slot, to prevent interference of calibrating sequence of base station during carrying out antenna calibration in receiving channel by external signal, ensure that the precision of antenna calibration.
Optionally, the base station determines position and the duration of silent time slot, comprising: the base station obtains antenna calibration demand；The base station determines position and the duration of the silent time slot according to the antenna calibration demand.
Base station determines silent time slot according to antenna calibration demand, and the normal transmitting-receiving that time interval resource carries out signal can be effectively utilized while guaranteeing calibration accuracy.
Optionally, after the base station determines position and the duration of silent time slot, further includes: the base station sends instruction information to the terminal, and the instruction information includes: position and the duration of the silent time slot.
Optionally, the base station sends instruction information to the terminal, comprising:
Preset duration position of the base station before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
The base station is by sending instruction information to the terminal in advance before the silent time slot, so that it is guaranteed that the terminal can stop receiving and transmitting signal in the silent time slot.
Optionally, the method also includes the appearance periods that: the base station determines the silent time slot.By the appearance period of the determination silent time slot so that base station system and terminal periodic keep silent, periodically antenna is calibrated for the base station system.
Optionally, the duration of the silent time slot is greater than the duration of default protection interval GP, thereby may be ensured that base station system has the enough antenna calibration time, guarantees smoothly completing for calibration process.
Second aspect, the embodiment of the present invention also provide a kind of antenna calibration equipment, comprising:
Determining module, for determining position and the duration of silent time slot, wherein the antenna calibration equipment and terminal not receiving and transmitting signal in the silence time slot；
Calibration module, for carrying out antenna calibration in the silent time slot.
Optionally, the determining module, is specifically used for:
Obtain antenna calibration demand parameter；
According to the antenna calibration demand parameter, position and the duration of the silent time slot are determined.
Optionally, described device further include:
Sending module, for after the position of the determining silent time slot of the determining module and duration, Xiang Suoshu terminal to send instruction information, described to indicate that information includes: position and the duration of the silence time slot.
Optionally, the sending module, is specifically used for:
Preset duration position of the base station before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
Optionally, the determining module, is also used to:
Determine the appearance period of the silent time slot.
Optionally, the duration of the silent time slot is greater than the duration of default protection interval GP.
Antenna calibration equipment provided by second aspect, for executing antenna calibration method provided by first aspect, technical effect is similar with the antenna calibration method.
The third aspect, the embodiment of the present invention also provide a kind of base station, comprising:
Processor, for determining position and the duration of silent time slot, wherein the antenna calibration equipment and terminal not receiving and transmitting signal in the silence time slot；
The processor is also used to carry out antenna calibration in the silent time slot.
Optionally, the processor, is specifically used for:
Obtain antenna calibration demand parameter；
According to the antenna calibration demand parameter, position and the duration of the silent time slot are determined.
Optionally, the base station further include:
Transmitter, for after the position of the determining silent time slot of the processor and duration, Xiang Suoshu terminal to send instruction information, described to indicate that information includes: position and the duration of the silence time slot.
Optionally, the transmitter, is specifically used for:
Preset duration position before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
Optionally, the processor, is also used to:
Determine the appearance period of the silent time slot.
Optionally, the duration of the silent time slot is greater than the duration of default protection interval GP.
Base station provided by the third aspect, for executing antenna calibration method provided by first aspect,
Technical effect is similar with the antenna calibration method.
Fourth aspect, the embodiment of the present invention also provide a kind of base station, including processor and memory, and program instruction is stored in the memory, and the processor is used to call the program instruction in the memory, the antenna calibration method provided to realize first aspect.
Antenna calibration method, device and base station provided in an embodiment of the present invention, position and the duration of silent time slot are determined by base station, base station and the terminal equal not receiving and transmitting signal in silent time slot, base station carries out antenna calibration in silent time slot, to prevent interference of calibrating sequence of base station during carrying out antenna calibration in receiving channel by external signal, the precision of antenna calibration ensure that.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, a brief description of the drawings needed to be used in the description of the embodiments or the prior art will be given below, apparently, drawings in the following description are some embodiments of the invention, for those of ordinary skill in the art, without any creative labor, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow diagram of antenna calibration method of the embodiment of the present invention；
Fig. 2 is the calibration time slot schematic diagram that antenna calibration method of the embodiment of the present invention determines；
Fig. 3 is the structural schematic diagram of Transmission Time Interval of the embodiment of the present invention (Transmission Time Interval, referred to as: TTI)；
Fig. 4 is the schematic diagram that the scheduling of base station of the embodiment of the present invention configures silent time slot；
Fig. 5 is that base station of the embodiment of the present invention determines that the schematic diagram in period occurs in silent time slot；
Fig. 6 is the radio-frequency channel calibration structure schematic diagram of base station system in the embodiment of the present invention；
Fig. 7 is the structural schematic diagram of antenna calibration equipment of the embodiment of the present invention；
Fig. 8 is the structural schematic diagram of base station of the embodiment of the present invention；
Fig. 9 is another structural schematic diagram of base station of the embodiment of the present invention.
In order to eliminate influence of the deviation between each radio-frequency head receiving channel and sendaisle to channel in wireless communication procedure, guarantee the reciprocity of radio-frequency channel, base station system usually requires to calibrate radio-frequency channel, to guarantee the consistency of the radio-frequency head sendaisle amplitude and phase of multiple far-end RF modules (Radio Remote Unit, referred to as: RRU).Base station system is in the mistake for carrying out radio-frequency channel calibration in order to prevent
Journey receives the input of other external signals, and calibration accuracy is caused to reduce even calibration failure, and the embodiment of the present invention provides a kind of antenna calibration method, device and base station, for guaranteeing that calibration process smoothly completes.
Fig. 1 is the flow diagram of antenna calibration method of the embodiment of the present invention, and Fig. 2 is the calibration time slot schematic diagram that antenna calibration method of the embodiment of the present invention determines.
Fig. 1 and Fig. 2 is please referred to, the embodiment of the present invention provides a kind of antenna calibration method, and the executing subject of the antenna calibration method is base station.The described method includes:
S101: base station determines position and the duration of silent time slot, wherein the base station and terminal not receiving and transmitting signal in the silence time slot.
Specifically, the base station determines the regular traffic time slot and silent time slot of radio frames, wherein the base station can send downlink signal in the regular traffic time slot, or receive uplink signal；The base station neither sends signal in the silent time slot nor receives signal.
During specific implementation, the position of the determining silent time slot and duration, comprising:
The base station obtains antenna calibration demand；
The base station determines position and the duration of the silent time slot according to the antenna calibration demand.
Specifically, the base station can obtain antenna calibration demand by the situation of change of the characteristic parameter of monitoring base station system.The characteristic parameter of the base station system can be the working frequency of radio circuit or the temperature of external environment and humidity etc..When the situation of change of the characteristic parameter is more than preset threshold, i.e., capable of emitting antenna calibration demand.
The base station determines after position and the duration of silent time slot, further includes:
The base station sends instruction information to the terminal, and the instruction information includes: position and the duration of the silent time slot.
Fig. 3 is Transmission Time Interval of the embodiment of the present invention (Transmission Time Interval, referred to as: TTI) structural schematic diagram, and Fig. 4 is the schematic diagram that the scheduling of base station of the embodiment of the present invention configures silent time slot.
Referring to Fig. 3, the silence time slot can be the part or whole TTI time slot section in specific TTI.
Please refer to Fig. 4, specifically, after the base station obtains the antenna calibration demand, downlink control instructions information is sent to the terminal by down control channel, it indicates that the terminal keeps silent in the silent time slot, stops sending signal to the base station and from base station received signal.
Further, on the basis of the above embodiments, the base station sends instruction information to the terminal, comprising:
Preset duration position of the base station before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
The base station is by sending instruction information to the terminal in advance before the silent time slot, so that it is guaranteed that the terminal can stop receiving and transmitting signal in the silent time slot.
Pass through above embodiment, base station can determine position and the duration of silent time slot in real time according to correction demand, so that base station system is without when carrying out antenna calibration, guarantee has more time slots to can be used for normal sending and receiving data, to save system call resource while guaranteeing that base station system can carry out accurate calibration to antenna.
Optionally, the base station system can also determine the appearance period of the silent time slot.By the appearance period of the determination silent time slot so that base station system and terminal periodic keep silent, periodically antenna is calibrated for the base station system.
Optionally, the duration of the silent time slot is greater than the duration of default protection interval GP.The duration of the silent time slot is set greater than to the duration of default protection interval GP, it is ensured that base station system has the enough antenna calibration time, guarantees smoothly completing for calibration process.
Fig. 5 is that base station of the embodiment of the present invention determines that the schematic diagram in period occurs in silent time slot.
Please refer to Fig. 5, specifically, the base station system can determine the fixation position into the time slot of silent status, and according to the appearance period of the silent time slot, enter silent status in the fixation position of the time slot, the base station and the terminal are simultaneously stopped receiving and transmitting signal.The appearance period of the silence time slot can be provided by agreement.The period can be any duration, such as: 1024 minutes, 30 minutes etc..Specifically, it can be set in advance according to the antenna performance of base station system.
S102: the base station carries out antenna calibration in the silent time slot.
Fig. 6 is the radio-frequency channel calibration structure schematic diagram of base station system in the embodiment of the present invention.Specifically, the process of the base station progress antenna calibration is as shown in Figure 6.
Referring to Fig. 6, the radio-frequency channel calibration structure of base station system includes referring to transmission channel, radio-frequency antenna splitter and receiving channel in the embodiment of the present invention.When calibration, after base station system gets receiving channels calibration sequence, it is sent the receiving channels calibration sequence on multiple radio-frequency antennas with reference to transmission channel by described, the receiving channel of each radio-frequency antenna is calculated according to the correction sequence and the amplitude-phase deviation with reference between sendaisle, corresponding radio frequency correction coefficient is obtained, and the receiving channel is calibrated according to the radio frequency correction coefficient.
Antenna calibration method provided in an embodiment of the present invention, by base station determine silent time slot position and when
It is long, base station and the terminal equal not receiving and transmitting signal in silent time slot, base station carries out antenna calibration in silent time slot, to prevent interference of calibrating sequence of base station during carrying out antenna calibration in receiving channel by external signal, ensure that the precision of antenna calibration.
Fig. 7 is the structural schematic diagram of antenna calibration equipment of the embodiment of the present invention.
Referring to Fig. 7, antenna calibration equipment provided in an embodiment of the present invention, comprising:
Determining module 710, for determining position and the duration of silent time slot, wherein the antenna calibration equipment and terminal not receiving and transmitting signal in the silence time slot；
Calibration module 720, for carrying out antenna calibration in the silent time slot.
Optionally, the determining module 710, is specifically used for:
Obtain antenna calibration demand parameter；
According to the antenna calibration demand parameter, position and the duration of the silent time slot are determined.
Optionally, described device further include:
Sending module 730, for after the position of the determining silent time slot of the determining module and duration, Xiang Suoshu terminal to send instruction information, described to indicate that information includes: position and the duration of the silence time slot.
Optionally, the sending module 730, is specifically used for:
Preset duration position of the base station before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
Optionally, the determining module 710, is also used to:
Determine the appearance period of the silent time slot.
Optionally, the duration of the silent time slot is greater than the duration of default protection interval GP.
Antenna calibration equipment provided in an embodiment of the present invention, for executing the antenna calibration method of above method embodiment offer, specific implementation and technical effect are similar with embodiment of the method, and details are not described herein.
Fig. 8 is the structural schematic diagram of base station of the embodiment of the present invention.
Referring to Fig. 8, base station provided in an embodiment of the present invention, comprising:
Processor 810, for determining position and the duration of silent time slot, wherein the antenna calibration equipment and terminal not receiving and transmitting signal in the silence time slot；
The processor 810 is also used to carry out antenna calibration in the silent time slot.
Optionally, the processor 810, is specifically used for:
Obtain antenna calibration demand parameter；
According to the antenna calibration demand parameter, position and the duration of the silent time slot are determined.
Optionally, the base station further include:
Transmitter 820, for after the position of the determining silent time slot of the processor 810 and duration, Xiang Suoshu terminal to send instruction information, described to indicate that information includes: position and the duration of the silence time slot.
Optionally, the transmitter 820, is specifically used for:
Preset duration position before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
Optionally, the processor 810, is also used to:
Determine the appearance period of the silent time slot.
Optionally, the duration of the silent time slot is greater than the duration of default protection interval GP.
Base station provided in an embodiment of the present invention, for executing the antenna calibration method of above method embodiment offer, specific implementation and technical effect are similar with embodiment of the method, and details are not described herein.
Fig. 9 is another structural schematic diagram of base station of the embodiment of the present invention.
Referring to Fig. 9, base station provided in an embodiment of the present invention, comprising:
Processor 910 and memory 920, program instruction is stored in the memory 920, the processor 910 is used to call the program instruction in the memory, the antenna calibration method provided to realize above method embodiment, its specific implementation and technical effect are similar with embodiment of the method, and details are not described herein.
Those of ordinary skill in the art will appreciate that: realizing all or part of the steps of above-mentioned each method embodiment, this can be accomplished by hardware associated with program instructions.Program above-mentioned can be stored in a computer readable storage medium.When being executed, execution includes the steps that above-mentioned each method embodiment to the program；And storage medium above-mentioned includes: the various media that can store program code such as ROM, RAM, magnetic or disk.
Claims (18)
- A kind of antenna calibration method characterized by comprisingBase station determines position and the duration of silent time slot, wherein the base station and terminal not receiving and transmitting signal in the silence time slot；The base station carries out antenna calibration in the silent time slot.
- The method according to claim 1, wherein the base station determines position and the duration of silent time slot, comprising:The base station obtains antenna calibration demand；The base station determines position and the duration of the silent time slot according to the antenna calibration demand.
- Method according to claim 1 or 2, which is characterized in that the base station determines after position and the duration of silent time slot, further includes:The base station sends instruction information to the terminal, and the instruction information includes: position and the duration of the silent time slot.
- According to the method described in claim 3, it is characterized in that, the base station sends instruction information to the terminal, comprising:Preset duration position of the base station before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
- The method according to claim 1, wherein the method also includes:The base station determines the appearance period of the silent time slot.
- The method according to claim 1, wherein the duration of the silence time slot is greater than the duration of default protection interval GP.
- A kind of antenna calibration equipment characterized by comprisingDetermining module, for determining position and the duration of silent time slot, wherein the antenna calibration equipment and terminal not receiving and transmitting signal in the silence time slot；Calibration module, for carrying out antenna calibration in the silent time slot.
- Device according to claim 7, which is characterized in that the determining module is specifically used for:Obtain antenna calibration demand parameter；According to the antenna calibration demand parameter, position and the duration of the silent time slot are determined.
- Device according to claim 8, which is characterized in that further include:Sending module, after position and the duration for determining silent time slot in the determining module, to institute It states terminal and sends instruction information, the instruction information includes: position and the duration of the silent time slot.
- Device according to claim 9, which is characterized in that the sending module is specifically used for:Preset duration position of the base station before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
- Device according to claim 7, which is characterized in that the determining module is also used to:Determine the appearance period of the silent time slot.
- Device according to claim 7, which is characterized in that the duration of the silence time slot is greater than the duration of default protection interval GP.
- A kind of base station characterized by comprisingProcessor, for determining position and the duration of silent time slot, wherein the antenna calibration equipment and terminal not receiving and transmitting signal in the silence time slot；The processor is also used to carry out antenna calibration in the silent time slot.
- Base station according to claim 13, which is characterized in that the processor is specifically used for:Obtain antenna calibration demand parameter；According to the antenna calibration demand parameter, position and the duration of the silent time slot are determined.
- Base station according to claim 14, which is characterized in that further include:Transmitter, for after the position of the determining silent time slot of the processor and duration, Xiang Suoshu terminal to send instruction information, described to indicate that information includes: position and the duration of the silence time slot.
- Base station according to claim 15, which is characterized in that the transmitter is specifically used for:Preset duration position before the initial time of the silent time slot, Xiang Suoshu terminal send the instruction information.
- Base station according to claim 13, which is characterized in that the processor is also used to:Determine the appearance period of the silent time slot.
- Base station according to claim 13, which is characterized in that the duration of the silence time slot is greater than the duration of default protection interval GP.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/112759 WO2018119792A1 (en) | 2016-12-28 | 2016-12-28 | Antenna calibration method, device, and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109479205A true CN109479205A (en) | 2019-03-15 |
| CN109479205B CN109479205B (en) | 2020-12-08 |
Family
ID=62710205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680087752.3A Active CN109479205B (en) | 2016-12-28 | 2016-12-28 | Antenna calibration method, device and base station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109479205B (en) |
| WO (1) | WO2018119792A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711497B (en) * | 2020-06-11 | 2022-04-26 | 杭州海康威视数字技术股份有限公司 | Frequency offset calibration method and alarm system |
| CN114189291B (en) * | 2020-09-15 | 2023-12-05 | 北京佰才邦技术股份有限公司 | Antenna calibration method, remote radio unit and baseband processing unit |
| CN117998536A (en) * | 2022-11-03 | 2024-05-07 | 中兴通讯股份有限公司 | Information transmission method, base station, terminal and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064902A (en) * | 2006-04-25 | 2007-10-31 | 大唐移动通信设备有限公司 | Method for real-time calibrating intelligent antenna |
| CN101141235A (en) * | 2006-09-08 | 2008-03-12 | 北京大学 | Interference canceling method for co-frequency co-time slot duplexing |
| CN101529734A (en) * | 2006-10-26 | 2009-09-09 | 高通股份有限公司 | Silence intervals in wireless communications |
| CN102244531A (en) * | 2010-05-14 | 2011-11-16 | 电信科学技术研究院 | Method and device for dynamically regulating antenna calibration position |
| US20130102254A1 (en) * | 2010-05-27 | 2013-04-25 | Ubiquam Ltd. | Method and system of interference cancelation in collocated transceivers configurations |
| CN103124199A (en) * | 2011-11-21 | 2013-05-29 | 华为技术有限公司 | Method, device and data frame for sensing spectrum |
| CN104811255A (en) * | 2015-04-23 | 2015-07-29 | 大唐移动通信设备有限公司 | Antenna calibration method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4388303B2 (en) * | 2003-05-16 | 2009-12-24 | 日本無線株式会社 | Array antenna communication device |
| CN102324961B (en) * | 2011-05-24 | 2014-06-18 | 大唐移动通信设备有限公司 | Method and device for determining calibration position of receiving direction antenna |
-
2016
- 2016-12-28 WO PCT/CN2016/112759 patent/WO2018119792A1/en active Application Filing
- 2016-12-28 CN CN201680087752.3A patent/CN109479205B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064902A (en) * | 2006-04-25 | 2007-10-31 | 大唐移动通信设备有限公司 | Method for real-time calibrating intelligent antenna |
| CN101141235A (en) * | 2006-09-08 | 2008-03-12 | 北京大学 | Interference canceling method for co-frequency co-time slot duplexing |
| CN101529734A (en) * | 2006-10-26 | 2009-09-09 | 高通股份有限公司 | Silence intervals in wireless communications |
| CN102244531A (en) * | 2010-05-14 | 2011-11-16 | 电信科学技术研究院 | Method and device for dynamically regulating antenna calibration position |
| US20130102254A1 (en) * | 2010-05-27 | 2013-04-25 | Ubiquam Ltd. | Method and system of interference cancelation in collocated transceivers configurations |
| CN103124199A (en) * | 2011-11-21 | 2013-05-29 | 华为技术有限公司 | Method, device and data frame for sensing spectrum |
| CN104811255A (en) * | 2015-04-23 | 2015-07-29 | 大唐移动通信设备有限公司 | Antenna calibration method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109479205B (en) | 2020-12-08 |
| WO2018119792A1 (en) | 2018-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11025457B2 (en) | Enhancements on QCL frameworks for multiple TRP operation | |
| US10560902B2 (en) | Method, device and apparatus for controlling uplink transmission power, and storage medium | |
| US20210306123A1 (en) | Uplink transmission | |
| US8818291B2 (en) | Method and device for antenna calibration | |
| KR20190076052A (en) | Power control method and terminal | |
| US10461832B2 (en) | Channel status information feedback and control method and device | |
| JP5646768B2 (en) | Outer loop link adaptive calculation execution method and apparatus | |
| WO2020063958A1 (en) | Method and apparatus for signal transmission and resource determination, terminal, base station, and storage medium | |
| US20190349098A1 (en) | Radio Node Calibration | |
| CN116530030A (en) | Apparatus and method for communicating on different beams | |
| US20230209478A1 (en) | Emission restricted transmission of reference signals | |
| US11129167B2 (en) | Calibrating an array antenna | |
| WO2018202019A1 (en) | Communication method, terminal device, and network device | |
| US20210400700A1 (en) | A method to determine spatial quasi co-location (qcl) assumption for channel state information reference signal (csi-rs) in new radio (nr) | |
| WO2019033842A1 (en) | Method for indicating and receiving transmit power of reference signal, network device, and terminal | |
| CN109479205A (en) | Antenna calibration method, device and base station | |
| KR20240090794A (en) | TRANSMISSION CONFIGURATION INDICATION DETERMINATION METHOD AND APPARATUS, AND TERMINAL AND STORAGE MEDIUM | |
| CN114451022B (en) | Power adjustment method and device | |
| JP6058812B2 (en) | Tracking of received power in wireless communication | |
| CN113285741B (en) | Signal transmission method and related equipment | |
| US20230180134A1 (en) | Communication Method, Apparatus, and System | |
| CN110086511B (en) | Beam forming method and device | |
| WO2022057175A1 (en) | Communication method and apparatus | |
| CN114467344A (en) | Method and device for configuring frequency domain transmission resources | |
| WO2019027495A1 (en) | Enhanced multi-user uplink power control during txop |
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 |