CN107528620B - Method and device for transmitting correction signal of antenna channel and base station - Google Patents
Method and device for transmitting correction signal of antenna channel and base station Download PDFInfo
- Publication number
- CN107528620B CN107528620B CN201610459947.8A CN201610459947A CN107528620B CN 107528620 B CN107528620 B CN 107528620B CN 201610459947 A CN201610459947 A CN 201610459947A CN 107528620 B CN107528620 B CN 107528620B
- Authority
- CN
- China
- Prior art keywords
- ofdm symbol
- correction signal
- equal
- antenna channel
- wireless frame
- 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
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
Abstract
The embodiment of the invention provides a method for sending a correction signal of an antenna channel, which comprises the following steps: a base station generates a wireless frame, wherein the wireless frame comprises N sub-frames, each sub-frame comprises M OFDM symbols and P correction signals, each OFDM symbol is composed of a cyclic prefix CP and OFDM symbol data, and P is less than or equal to M; and the base station sends the wireless frame to the terminal. The embodiment of the invention also provides a device for sending the correction signal of the antenna channel and a base station.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for transmitting a calibration signal of an antenna channel, and a base station.
Background
In the actual large-scale antenna array system, each radio frequency channel has a certain error, but the core algorithm of the intelligent antenna requires to accurately know the array manifold, so that the receiving and transmitting radio frequency channels of the antenna need to be corrected, and the intelligent antenna can effectively control the beam direction and the shape only by detecting and correcting the errors among the radio frequency channels, thereby realizing intelligent transmission and intelligent reception.
A Long Term Evolution (LTE) wireless communication system is divided into two modes, namely Time Division Duplex (TDD) and Frequency Division Duplex (FDD), according to different duplex modes. For TDD-LTE, it is convenient to implement antenna rf channel calibration, because TDD system uplink and downlink use the same frequency point, there is a Guard Period (GP) between uplink and downlink, and the TDD system does not receive nor transmit in the GP, so the calibration of the antenna channel can be performed, and thus normal receiving and transmitting of wireless communication data is not affected. However, for FDD-LTE, because the uplink and downlink of the FDD system use different frequency points to work in parallel, the uplink or downlink processing time is occupied when the correction signal of the antenna channel is sent, the wireless communication data is lost, and the system capacity is reduced.
Therefore, it is an urgent problem to find a method for transmitting a calibration signal without loss of uplink or downlink service data in FDD-LTE.
Disclosure of Invention
In view of this, embodiments of the present invention are to provide a method, an apparatus, and a base station for transmitting a calibration signal of an antenna channel, so as to achieve the purpose of not consuming uplink or downlink service data in FDD-LTE.
The technical scheme of the embodiment of the invention is realized as follows:
a method for transmitting a calibration signal of an antenna channel, comprising:
generating a radio frame, the radio frame comprising: n sub-frames, each sub-frame comprises M Orthogonal Frequency Division Multiplexing (OFDM) symbols and P correction signals, each OFDM symbol consists of a Cyclic Prefix (CP) and OFDM symbol data, wherein P is less than or equal to M;
and transmitting the wireless frame.
As above, the correction signal is located before the OFDM symbol.
As above, a guard interval GP exists between the correction signal and the OFDM symbol.
In the above method, the length of the radio frame is 10ms, N is equal to 10, and when the CP is a normal CP, M is equal to 14; when the CP is an extended CP, M is equal to 12.
A correction signal transmission apparatus of an antenna channel, comprising: the wireless communication device comprises a generating module and a sending module, wherein the generating module is used for generating a wireless frame, and the wireless frame comprises: n sub-frames, each sub-frame comprises M Orthogonal Frequency Division Multiplexing (OFDM) symbols and P correction signals, each OFDM symbol consists of a Cyclic Prefix (CP) and OFDM symbol data, wherein P is less than or equal to M;
and the sending module is used for sending the wireless frame.
In the above apparatus, the correction signal is located before the OFDM symbol.
In the above apparatus, a guard interval GP exists between the correction signal and the OFDM symbol.
As above, the radio frame length is 10ms, N is equal to 10, and when the CP is a normal CP, M is equal to 14; when the CP is an extended CP, M is equal to 12.
A base station comprising a correction signal transmission apparatus for an antenna channel, the correction signal transmission apparatus for an antenna channel comprising: a generating module and a sending module, wherein the generating module is used for generating a data packet,
a generating module configured to generate a wireless frame, the wireless frame including: n sub-frames, each sub-frame comprises M Orthogonal Frequency Division Multiplexing (OFDM) symbols and P correction signals, each OFDM symbol consists of a Cyclic Prefix (CP) and OFDM symbol data, wherein P is less than or equal to M;
and the sending module is used for sending the wireless frame.
In the above base station, the correction signal is located before the OFDM symbol, and a guard interval GP exists between the correction signal and the OFDM symbol.
The method, the device and the base station for transmitting the correction signal of the antenna channel generate a radio frame and transmit the radio frame, wherein the radio frame comprises N subframes, each subframe comprises M OFDM symbols and P correction signals, each Orthogonal Frequency Division Multiplexing (OFDM) symbol consists of a Cyclic Prefix (CP) and OFDM symbol data, and P is less than or equal to M; therefore, the correction signal is transmitted under the premise of not losing uplink or downlink service data in FDD-LTE, so that the system overhead is reduced, and the system throughput is improved.
Drawings
Fig. 1 is a schematic diagram of a radio frame structure of a conventional LTE system;
fig. 2 is a first flowchart of a method for transmitting a calibration signal of an antenna channel according to an embodiment of the present invention;
fig. 3 is a first schematic diagram of a radio frame structure according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a radio frame structure according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a calibration signal transmitting apparatus for an antenna channel according to an embodiment of the present invention.
Detailed Description
In the embodiments of the present invention, it is assumed that the LTE system bandwidth configuration is 20MHz and the sampling rate is 30.72 MHz.
Fig. 1 is a schematic diagram of a radio frame structure of an existing LTE system, and as shown in fig. 1, one radio frame includes 10 subframes, each subframe includes 14 or 12 OFDM symbols, and each OFDM symbol is composed of a CP and OFDM symbol data. For normal CP, each subframe contains 14 OFDM symbols, where the length of the normal CP is 2, 4.69us and 5.21us respectively; for extended CP, each subframe contains 12 OFDM symbols, where the length of extended CP is 16.67 us.
In the conventional radio frame structure, when FDD-LTE performs antenna channel correction (taking uplink antenna channel correction as an example), a terminal needs to send an uplink correction Signal, and in order to avoid interference to the uplink Signal, the uplink correction Signal needs to occupy only one uplink Sounding Reference Signal (SRS) data, and assuming that the SRS Signal period of the occupied terminal is 10ms, one SRS data is reserved for the uplink correction Signal for correction processing of the antenna channel every 10ms, and LTE data processing cannot be performed, so that system overhead is increased.
It should be noted that, according to the LTE protocol, the SRS signal period may be configured to be 5ms, 20ms, 40ms, 80ms, 160ms, and 320ms, and no matter which configuration period is used, 1 SRS data is occupied in the configuration period, and LTE data processing cannot be performed.
It should be noted that, in the conventional radio frame structure, the CP located before the OFDM symbol data not only contains the same content as the last segment of the OFDM symbol data, but also contains a large amount of redundant data. The CP is used to solve the problem of interference between OFDM symbols and interference between subcarriers caused by multipath delay and timing error, and the longer the CP is, the longer the supported maximum multipath delay spread is, the larger the corresponding coverage area is, but on the other hand, the longer the CP is, the larger the overhead of the system is. Therefore, according to the requirement of macro coverage, the LTE system supports two CP lengths, namely, a normal CP (4.69us or 5.21us) and an extended CP (16.67us), and the coverage range supporting the maximum multipath delay can reach several kilometers, but in the future 5G application, the coverage range requirement of the communication base station is greatly reduced, for example, the coverage range is usually several tens of meters to several hundreds of meters, so that the CP length of the conventional LTE system is greatly wasted.
The invention shortens the CP length according to the characteristic, so that the CP resource originally occupied by the redundant data can be used for bearing the antenna correction signal.
The method for transmitting a calibration signal of an antenna channel according to an embodiment of the present invention may be used in FDD-LTE, and the method for transmitting a calibration signal of an antenna channel according to various embodiments of the present invention is described in detail below with reference to the accompanying drawings.
Fig. 2 is a flowchart of a method for transmitting a calibration signal of an antenna channel according to an embodiment of the present invention. As shown in fig. 2, the method provided in this embodiment may be specifically executed by a base station, and specifically, the method provided in this embodiment includes:
Specifically, the base station generates a radio frame containing the correction signal.
It should be noted that the CP in the embodiment of the present invention is different from the CP in the radio frame structure of the existing LTE system, and the CP in the embodiment of the present invention only contains the same content as the data in the last segment of the OFDM symbol data.
And step 11, sending the wireless frame.
Specifically, when the base station sends the wireless frame to the terminal, the base station itself may correct the antenna channel according to a correction signal carried in the wireless frame.
The method for sending the correction signal of the antenna channel provided by the embodiment of the invention is applied to FDD-LTE, does not need to occupy SRS data, and utilizes the redundant resource of the CP to bear the correction signal, so that the correction signal is sent on the premise of not losing uplink or downlink service data, and a base station can correct the antenna channel according to the correction signal, thereby reducing the system overhead and improving the system throughput.
Further, the correction signal is located before the OFDM symbol.
Specifically, fig. 3 is a schematic diagram of a radio frame structure according to an embodiment of the present invention, as shown in fig. 3, a radio frame includes N subframes, each subframe includes M OFDM symbols and P correction signals, each OFDM symbol is composed of a CP and OFDM symbol data, and the correction signal is located before the OFDM symbol.
Further, the length of the radio frame is 10ms, N is equal to 10, and when the CP is a normal CP, M is equal to 14; when the CP is an extended CP, M is equal to 12.
It should be noted that the sum of the lengths of the CP and the correction signal is 144Ts or 160Ts or 512Ts, Ts is 1/30.72us, and then the sum of the lengths of the CP and the correction signal is 4.69us or 5.21us or 16.67us, where 4.69us and 5.21us correspond to the conventional CP of the existing LTE system, and 16.67us corresponds to the extended CP of the existing LTE system.
The length definitions of the CP and the correction signal are shown in table 1 below:
TABLE 1
| 4.69us | 5.21us | 16.67us | |
| Correcting signal | 48 sample points, 1.56us | 48 sample points, 1.56us | 128 sample point, 4.17us |
| CP | 96 sample point, 3.12us | 112 sample point, 3.64us | 384 sample point, 12.50us |
In the radio frame structure provided by this embodiment, each conventional CP has 48 sampling point data that can be used as a correction signal, and each 1ms subframe has 14 conventional CPs, and then 672 sampling point data can be used as a correction signal in each 1ms subframe, which satisfies the length requirement of 512 sampling points in an antenna correction signal sequence; each extended CP has 128 sampling point data which can be used as a correction signal, each 1ms subframe has 12 conventional CPs, and 1536 sampling point data of each 1ms subframe can be used as a correction signal, so that the length requirement of 512 sampling points of an antenna correction signal sequence is met, and therefore, OFDM symbol data resources do not need to be occupied additionally, uplink and downlink SRS resources do not need to be occupied, the system overhead is reduced, and the throughput is improved.
It should be further noted that, in FDD-LTE, according to the method for transmitting a calibration signal of an antenna channel provided in the embodiment of the present invention, the base station performs a calibration process on the antenna channel during the signal calibration time, and the terminal does not perform any process during the signal calibration time. Specifically, for the existing LTE terminal, the correction signal portion is received but not processed, then the OFDM symbol portion is received, the existing CP synchronization processing method is applied to synchronize the OFDM symbol data, and the CP portion and the correction signal portion are discarded after the OFDM symbol data are synchronized. Therefore, the method for transmitting the correction signal of the antenna channel provided by the embodiment of the invention has no influence on the processing process of the terminal in FDD-LTE and is compatible with the terminal.
In another possible embodiment, a GP is present between the correction signal and the OFDM symbol.
It should be noted that the GP in the embodiment of the present invention is different from the GP between the uplink and the downlink of the TDD system, the GP of the TDD system is used for the correction processing of the antenna channel, and the GP in the embodiment of the present invention is used for providing the switching protection for the correction signal and the OFDM symbol.
Specifically, fig. 4 is a schematic diagram of a radio frame structure provided in the embodiment of the present invention, as shown in fig. 4, a radio frame includes N subframes, each subframe includes M OFDM symbols and P correction signals, each OFDM symbol is composed of a CP and OFDM symbol data, the correction signal is located before the OFDM symbol, and a GP exists between the correction signal and the OFDM symbol.
It should be noted that the sum of the lengths of the CP, GP and the correction signal is 144Ts or 160Ts or 512Ts, Ts is 1/30.72us, and then the sum of the lengths of the CP, GP and the correction signal is 4.69us or 5.21us or 16.67us, where 4.69us and 5.21us correspond to the normal CP of the existing LTE system, and 16.67us corresponds to the extended CP of the existing LTE system.
The length definitions of the CP, GP and correction signals are shown in table 2 below:
TABLE 2
| 4.69us | 5.21us | 16.67us | |
| Correcting signal | 48 sample points, 1.56us | 48 sample points, 1.56us | 128 sample point, 4.17us |
| GP | 16 sample points, 0.52us | 16 sample points, 0.52us | 128 sample point, 4.17us |
| CP | 80 sample point, 2.60us | 96 sample point, 3.12us | 256 sample points, 8.33us |
In the radio frame structure provided by this embodiment, each conventional CP has 48 sampling point data that can be used as a correction signal, and each 1ms subframe has 14 conventional CPs, and then 672 sampling point data can be used as a correction signal in each 1ms subframe, which satisfies the length requirement of 512 sampling points in an antenna correction signal sequence; each extended CP has 128 sampling point data which can be used as a correction signal, each 1ms subframe has 12 conventional CPs, and 1536 sampling point data of each 1ms subframe can be used as a correction signal to meet the length requirement of 512 sampling points of an antenna correction signal sequence, so that OFDM symbol data resources do not need to be additionally occupied, and SRS resources of uplink and downlink detection reference signals do not need to be occupied, thereby reducing the system overhead and improving the throughput; and simultaneously, GP is added in a radio frame structure, so that switching protection is provided for correcting signals and OFDM symbols.
The calibration signal transmitting device for an antenna channel according to the embodiment of the present invention may be used in FDD-LTE, and fig. 5 is a schematic structural diagram of the calibration signal transmitting device for an antenna channel according to the embodiment of the present invention. As shown in fig. 5, the correction signal transmitting apparatus provided in the present embodiment includes: a generating module 50 and a sending module 51.
The generating module 50 is configured to generate a wireless frame, where the wireless frame includes: n sub-frames, each sub-frame comprising M OFDM symbols and P correction signals, each OFDM symbol consisting of CP and OFDM symbol data, wherein P is less than or equal to M; a sending module 51, configured to send a wireless frame.
Further, the correction signal is located before the OFDM symbol.
Further, the length of the radio frame is 10ms, N is equal to 10, and when the CP is a normal CP, M is equal to 14; when the CP is an extended CP, M is equal to 12.
Further, a guard interval GP exists between the correction signal and the OFDM symbol.
The calibration signal transmitting apparatus of the antenna channel provided in this embodiment may be used to implement the technical solution in the embodiments of the present invention, and the implementation principle and the technical effect are similar, which are not described herein again.
In practical applications, the generating module 50 and the sending module 51 may be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like, which are located in the sending device.
The invention also provides a base station, which can be used for FDD-LTE and comprises a correction signal sending device of an antenna channel, wherein the correction signal sending device of the antenna channel comprises a generating module and an invention module, the generating module is used for generating a wireless frame, and the wireless frame comprises: n sub-frames, each sub-frame comprising M OFDM symbols and P correction signals, each OFDM symbol consisting of CP and OFDM symbol data, wherein P is less than or equal to M; and the sending module is used for sending the wireless frame.
Further, the correction signal is located before the OFDM symbol, and a GP exists between the correction signal and the OFDM symbol.
The base station provided by the embodiment can automatically correct the antenna channel according to the correction signal in the wireless frame, thereby reducing the system overhead and improving the system throughput.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method for transmitting a calibration signal of an antenna channel, which is applied to a frequency division duplex system, is characterized in that the method comprises the following steps:
generating a wireless frame, the wireless frame comprising: n sub-frames, each sub-frame comprising M Orthogonal Frequency Division Multiplexing (OFDM) symbols and P correction signals, each OFDM symbol consisting of a Cyclic Prefix (CP) and OFDM symbol data, wherein P is less than or equal to M;
and transmitting the wireless frame.
2. The method of claim 1, wherein the correction signal precedes the OFDM symbol.
3. Method according to claim 2, characterized in that a guard interval GP is present between the correction signal and the OFDM symbol.
4. The method of claim 1, wherein the radio frame length is 10ms, N is equal to 10, and when CP is normal CP, M is equal to 14; when the CP is an extended CP, M is equal to 12.
5. An apparatus for transmitting calibration signals of an antenna channel, which is applied to a frequency division duplex system, the apparatus comprising: a generating module and a sending module, wherein the generating module is used for generating a data packet,
the generating module is configured to generate a wireless frame, where the wireless frame includes: n sub-frames, each sub-frame comprising M Orthogonal Frequency Division Multiplexing (OFDM) symbols and P correction signals, each OFDM symbol consisting of a Cyclic Prefix (CP) and OFDM symbol data, wherein P is less than or equal to M;
the sending module is used for sending the wireless frame.
6. The apparatus of claim 5, wherein the correction signal is located before the OFDM symbol.
7. The apparatus of claim 6, wherein a guard interval (GP) is present between the correction signal and the OFDM symbol.
8. The apparatus of claim 5, wherein the radio frame length is 10ms, wherein N is equal to 10, and wherein M is equal to 14 when CP is normal CP; when the CP is an extended CP, M is equal to 12.
9. A base station applied to a frequency division duplex system, wherein the base station comprises a calibration signal transmitting device for an antenna channel, and the calibration signal transmitting device for the antenna channel comprises: a generating module and a sending module, wherein the generating module is used for generating a data packet,
the generating module is configured to generate a wireless frame, where the wireless frame includes: n sub-frames, each sub-frame comprising M Orthogonal Frequency Division Multiplexing (OFDM) symbols and P correction signals, each OFDM symbol consisting of a Cyclic Prefix (CP) and OFDM symbol data, wherein P is less than or equal to M;
the sending module is used for sending the wireless frame.
10. The base station according to claim 9, wherein the correction signal is located before the OFDM symbol, and a guard interval GP is present between the correction signal and the OFDM symbol.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459947.8A CN107528620B (en) | 2016-06-22 | 2016-06-22 | Method and device for transmitting correction signal of antenna channel and base station |
| PCT/CN2017/089382 WO2017219986A1 (en) | 2016-06-22 | 2017-06-21 | Method and apparatus for sending correction signal of antenna channel, and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459947.8A CN107528620B (en) | 2016-06-22 | 2016-06-22 | Method and device for transmitting correction signal of antenna channel and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107528620A CN107528620A (en) | 2017-12-29 |
| CN107528620B true CN107528620B (en) | 2021-10-15 |
Family
ID=60735389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610459947.8A Active CN107528620B (en) | 2016-06-22 | 2016-06-22 | Method and device for transmitting correction signal of antenna channel and base station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107528620B (en) |
| WO (1) | WO2017219986A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112583751B (en) * | 2019-09-27 | 2021-11-19 | 华为技术有限公司 | Communication method, device and equipment |
| CN113055058B (en) * | 2019-12-27 | 2023-09-08 | 中兴通讯股份有限公司 | Base station, multi-antenna receiving and transmitting device and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585393A (en) * | 2003-08-21 | 2005-02-23 | 株式会社东芝 | Device and method for receiving OFDM signals |
| WO2013141584A1 (en) * | 2012-03-19 | 2013-09-26 | 엘지전자 주식회사 | Method for transmitting reference signal and apparatus using the method |
| CN103491607A (en) * | 2013-09-06 | 2014-01-01 | 奥维通信股份有限公司 | Design method for TD-LTE digital trunk time-division switch |
| CN104065449A (en) * | 2013-03-22 | 2014-09-24 | 华为技术有限公司 | Correcting signal sending method and base station |
| CN104243387A (en) * | 2014-09-03 | 2014-12-24 | 京信通信系统（中国）有限公司 | Channel correction method and device of OFDM system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100812352B1 (en) * | 2006-12-08 | 2008-03-11 | 한국전자통신연구원 | Structure and construction method of uplink control channel in mobile wideband wireless access system |
| WO2010055367A1 (en) * | 2008-11-12 | 2010-05-20 | Nokia Siemens Networks Oy | Structure for ota enb-enb communication |
| CN104244296B (en) * | 2013-06-13 | 2018-02-06 | 华为技术有限公司 | Channel correcting method and device between more RRU |
-
2016
- 2016-06-22 CN CN201610459947.8A patent/CN107528620B/en active Active
-
2017
- 2017-06-21 WO PCT/CN2017/089382 patent/WO2017219986A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1585393A (en) * | 2003-08-21 | 2005-02-23 | 株式会社东芝 | Device and method for receiving OFDM signals |
| WO2013141584A1 (en) * | 2012-03-19 | 2013-09-26 | 엘지전자 주식회사 | Method for transmitting reference signal and apparatus using the method |
| CN104065449A (en) * | 2013-03-22 | 2014-09-24 | 华为技术有限公司 | Correcting signal sending method and base station |
| CN103491607A (en) * | 2013-09-06 | 2014-01-01 | 奥维通信股份有限公司 | Design method for TD-LTE digital trunk time-division switch |
| CN104243387A (en) * | 2014-09-03 | 2014-12-24 | 京信通信系统（中国）有限公司 | Channel correction method and device of OFDM system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107528620A (en) | 2017-12-29 |
| WO2017219986A1 (en) | 2017-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI571090B (en) | Notifying a ul/dl configuration in lte tdd systems | |
| US9455805B2 (en) | Method and apparatus for wireless communications | |
| KR102044782B1 (en) | Detect physical random access channel and random access response for user equipment | |
| US10771195B2 (en) | Method for controlling downlink HARQ in wireless communication system and device therefor | |
| US7672339B2 (en) | Method of resolving overlaps in data transmission and user equipment therefor | |
| US10164696B2 (en) | Terminal device, base station device, communication method, and integrated circuit | |
| US10080134B2 (en) | Terminal device, base station apparatus, communication method, and integrated circuit | |
| EP3393167B1 (en) | Resource allocation method and device, and base station | |
| US8804674B2 (en) | Structure for OTA ENB-ENB communication | |
| EP2207278A1 (en) | Transmission method and device in long term evolution time division duplex system | |
| US10447451B2 (en) | Terminal device, base station device, communication method, and integrated circuit | |
| CN110771107B (en) | Method and apparatus for cross-digital basic configuration scheduling | |
| US10880060B2 (en) | Terminal device, base station device, communication method, and integrated circuit | |
| EP2753005A1 (en) | Data transmission method and device | |
| JP2022191387A (en) | Paging occasion start determination | |
| US10340992B2 (en) | Terminal device, base station device, communication method, and integrated circuit | |
| US8578047B2 (en) | Methods and systems for resource allocation | |
| US10411774B2 (en) | Terminal device, base station device, communication method, and integrated circuit using physical downlink shared channel transmission for efficient communication | |
| CN113169835B (en) | Data transmission method and device | |
| WO2018214992A1 (en) | Interference coordination method, terminal, base station and computer readable storage medium | |
| CN107528620B (en) | Method and device for transmitting correction signal of antenna channel and base station | |
| KR20180008924A (en) | Information transmission method, information determining method, and apparatus in tdd system, and system | |
| US20170332340A1 (en) | Method for positioning user equipment in full-duplex wireless communication system and apparatus therefor | |
| US20150215963A1 (en) | Method and Apparatus to Support New Special Sub-Frame in Legacy Wireless Communication Network | |
| EP3220696A1 (en) | Telegram splitting for slotted aloha |
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 |