CN111049561A - Adaptive scheduling method for broadband electrically-tuned antenna of LTE (Long term evolution) system - Google Patents
Adaptive scheduling method for broadband electrically-tuned antenna of LTE (Long term evolution) system Download PDFInfo
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- CN111049561A CN111049561A CN201911058005.9A CN201911058005A CN111049561A CN 111049561 A CN111049561 A CN 111049561A CN 201911058005 A CN201911058005 A CN 201911058005A CN 111049561 A CN111049561 A CN 111049561A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003044 adaptive effect Effects 0.000 title claims description 12
- 230000007774 longterm Effects 0.000 title abstract description 4
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000010287 polarization Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 108091006146 Channels Proteins 0.000 claims 14
- 230000011664 signaling Effects 0.000 claims 1
- 206010063385 Intellectualisation Diseases 0.000 abstract description 2
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- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
- H04B7/0608—Antenna selection according to transmission parameters
- H04B7/061—Antenna selection according to transmission parameters using feedback from receiving side
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- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
Abstract
The invention discloses a self-adaptive scheduling method of a broadband electrically-adjusted antenna of an LTE (Long term evolution) system, which comprises the following steps of: s1: transmitting a channel signal; s2: receiving a channel signal; s3: calculating user feedback information; s4: converting the user feedback information into a feedback signal; s5: sending a feedback signal; s6: receiving a feedback signal; s7: converting the feedback signal into scheduling information; s8: scheduling the users according to the scheduling information; s9: outputting data of the scheduled user; s10: data communication is started. The invention can realize self-adaptive user scheduling, thereby improving the intellectualization of system control and the stability of communication, always keeping the maximum system capacity, and meanwhile, the invention can self-adaptively set the antenna mode of the sending end through the signal-to-noise ratio of the channel, so that the antenna mode can self-adapt to the current channel environment, thereby improving the system throughput rate.
Description
Technical Field
The invention relates to the technical field of LTE communication, in particular to a self-adaptive scheduling method for a broadband electrically-adjusted antenna of an LTE system.
Background
As a new generation mobile communication technology, LTE adopts a more advanced technology, and can achieve a communication rate far higher than 3G, thereby satisfying the user's demand for high-rate video broadband multimedia integrated services. In order to meet the challenge of broadband access technology and to meet the requirement of new services, the international standardization organization 3GPP started the Long Term Evolution (LTE) project of Universal Mobile Telecommunications System (UMTS) in the end of 2004. The goal of this project is to develop a mobile communication system with high data rate, high channel capacity, low delay and low cost. The LTE system adopts a technology with orthogonal frequency division multiplexing and Multiple Input Multiple Output (MIMO) as a core, and further improves the performance of the system by using an Adaptive Modulation and Coding (AMC) technology. However, the simple use of adaptive modulation and coding does not really maximize the system gain and system performance, and multiple antenna scheduling is also needed to be used in cooperation to control the antenna mode of the transmitting end.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a self-adaptive scheduling method for a broadband electrically-adjusted antenna of an LTE system.
The invention provides a self-adaptive scheduling method of a broadband electrically-adjusted antenna of an LTE system, which comprises the following steps:
s1: transmitting a channel signal;
s2: receiving a channel signal;
s3: calculating user feedback information;
s4: converting user feedback information into a feedback signal: acquiring position information of a mobile terminal, searching a channel group of a multi-channel Radio Remote Unit (RRU) corresponding to the position information, controlling the opening of the channel group, and configuring a mobile terminal signal for antenna transmission by using the opened channel group;
s5: sending a feedback signal;
s6: receiving a feedback signal;
s7: converting the feedback signal into scheduling information;
s8: scheduling the users according to the scheduling information;
s9: outputting data of the scheduled user;
s10: data communication is started.
Preferably, the channel signal transmission in step S1 includes a transmitting end, the transmitting end is used for transmitting the channel estimation signal and the user data, and the transmitting end includes a duplexer group, a transmitting antenna, a scheduler, and a data processor.
Preferably, the transmitting antenna is installed on the duplexer group and configured to transmit data and receive a feedback signal from the receiving end, the scheduler is configured to generate scheduling information according to the feedback information, and the data processor is configured to select a user to be scheduled according to the scheduling information and transmit the selected user data through the transmitting antenna.
Preferably, the channel signal receiving in step S2 includes a plurality of receiving ends, where the receiving ends are used to receive data sent by the sending end and generate a feedback signal, and the receiving ends include a duplexer group, a receiving antenna, a receiving signal processor, and a feedback information processor.
Preferably, the duplexer group and the receiving antenna are configured to receive data from a transmitting end and transmit user feedback information, the receiving signal processor is configured to generate user feedback data and recovery data according to a data frame, and the feedback information processor is configured to convert the feedback information into a feedback signal.
Preferably, the channel group of the multi-channel remote radio unit RRU corresponding to the search location information in step S4 pairs 2N channels of the multi-channel RRU in pairs according to the antenna polarization direction to form N channel groups; wherein N is a positive integer and N is more than or equal to 2, and a pair of antennas is respectively configured for the N channel groups.
Preferably, the feedback signal includes a transmitting antenna group for a receiving end, a channel capacity provided by each antenna in the transmitting antenna group to the receiving end, and a performance loss ratio of an unselected transmitting antenna to each transmitting antenna in the transmitting antenna group.
Preferably, the receiving end feeds back the signal-to-noise ratio of each channel to the transmitting end, and the receiving end calculates equivalent information quality information in three antenna modes according to the signal-to-noise ratio.
The invention can realize self-adaptive user scheduling, thereby improving the intellectualization of system control and the stability of communication, always keeping the maximum system capacity, meanwhile, the invention calculates the channel capacity of three antenna modes, then calculates to obtain a judgment coefficient, and if the judgment coefficient is more than or equal to the preset threshold value, a single antenna mode is adopted; otherwise, further judging whether the channel capacity of the transmission diversity mode is larger than or equal to the channel capacity of the spatial multiplexing mode, if so, adopting the transmission diversity mode, otherwise, adopting the spatial multiplexing mode, and adaptively setting the antenna mode of the transmitting end through the signal-to-noise ratio of the channel, so that the antenna mode can be adaptive to the current channel environment, and further improving the system throughput rate.
Drawings
Fig. 1 is a flowchart of a method for adaptively scheduling a wideband electrically tunable antenna in an LTE system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples are given.
Referring to fig. 1, a method for adaptively scheduling a wideband electrically tunable antenna of an LTE system includes the following steps:
s1: transmitting a channel signal;
s2: receiving a channel signal;
s3: calculating user feedback information;
s4: converting user feedback information into a feedback signal: acquiring position information of a mobile terminal, searching a channel group of a multi-channel Radio Remote Unit (RRU) corresponding to the position information, controlling the opening of the channel group, and configuring a mobile terminal signal for antenna transmission by using the opened channel group;
s5: sending a feedback signal;
s6: receiving a feedback signal;
s7: converting the feedback signal into scheduling information;
s8: scheduling the users according to the scheduling information;
s9: outputting data of the scheduled user;
s10: data communication is started.
The channel signal transmission in step S1 includes a transmitting end for transmitting a signal having channel estimation and user data, the transmitting end including a duplexer group, a transmitting antenna installed on the duplexer group and for transmitting data and receiving a feedback signal from a receiving end, a scheduler for generating scheduling information according to the feedback information, and a data processor for selecting a user to be scheduled according to the scheduling information and transmitting the selected user data through the transmitting antenna, the channel signal reception in step S2 including a plurality of receiving ends for receiving the data transmitted from the transmitting end and generating a feedback signal, the receiving end including the duplexer group, the receiving antenna, a receiving signal processor, and a feedback information processor, the duplexer group and the receiving antenna for receiving the data from the transmitting end, sending user feedback information, wherein the receiving signal processor is used for generating user feedback data and recovery data according to the data frame, the feedback information processor is used for converting the feedback information into feedback signals, and the channel group of the multi-channel radio remote unit RRU corresponding to the searched position information in the step S4 pairs 2N channels of the multi-channel RRU in pairs according to the antenna polarization direction to form N channel groups; the method comprises the following steps that N is a positive integer and is not less than 2, N channel groups are respectively provided with an antenna, a feedback signal comprises a sending antenna group of a receiving end, channel capacity provided by each antenna in the sending antenna group to the receiving end and a performance loss ratio of an unselected sending antenna to each sending antenna in the sending antenna group, the receiving end feeds back a signal-to-noise ratio of each channel to the sending end, the receiving end respectively calculates equivalent information quality information under three antenna modes according to the signal-to-noise ratio, and if a calculation judgment coefficient is larger than or equal to a preset threshold value, a single antenna mode is adopted; otherwise, further judging whether the channel capacity of the transmission diversity mode is larger than or equal to the channel capacity of the spatial multiplexing mode, if so, adopting the transmission diversity mode, otherwise, adopting the spatial multiplexing mode.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A self-adaptive scheduling method for a broadband electrically-adjusted antenna of an LTE system is characterized by comprising the following steps:
s1: transmitting a channel signal;
s2: receiving a channel signal;
s3: calculating user feedback information;
s4: converting user feedback information into a feedback signal: acquiring position information of a mobile terminal, searching a channel group of a multi-channel Radio Remote Unit (RRU) corresponding to the position information, controlling the opening of the channel group, and configuring a mobile terminal signal for antenna transmission by using the opened channel group;
s5: sending a feedback signal;
s6: receiving a feedback signal;
s7: converting the feedback signal into scheduling information;
s8: scheduling the users according to the scheduling information;
s9: outputting data of the scheduled user;
s10: data communication is started.
2. The adaptive scheduling method for wideband electrically tunable antenna of LTE system as claimed in claim 1, wherein the channel signaling in step S1 includes a transmitting end, the transmitting end is used to transmit a signal with channel estimation and user data, and the transmitting end includes a duplexer group, a transmitting antenna, a scheduler, and a data processor.
3. The adaptive scheduling method for the wideband electrically tunable antenna of the LTE system as claimed in claim 2, wherein the transmitting antenna is installed on the duplexer group and configured to transmit data and receive a feedback signal from the receiving end, the scheduler is configured to generate scheduling information according to the feedback information, and the data processor is configured to select a user to be scheduled according to the scheduling information and transmit the selected user data through the transmitting antenna.
4. The adaptive scheduling method for a wideband electrically tunable antenna of an LTE system according to claim 1, wherein the channel signal reception in step S2 includes multiple receiving terminals, the receiving terminals are configured to receive data sent by the sending terminals and generate feedback signals, and the receiving terminals include a duplexer group, a receiving antenna, a receiving signal processor, and a feedback information processor.
5. The adaptive scheduling method for the wideband electrically tunable antenna of the LTE system as claimed in claim 4, wherein the duplexer group and the receiving antenna are configured to receive data from the transmitting end and transmit user feedback information, the receiving signal processor is configured to generate user feedback data and recovery data according to the data frame, and the feedback information processor is configured to convert the feedback information into the feedback signal.
6. The adaptive scheduling method for the wideband electrically tunable antenna of the LTE system according to claim 1, wherein the channel group of the multi-channel remote radio unit RRU corresponding to the search location information in step S4 is paired with 2N channels of the multi-channel RRU in pairs according to the antenna polarization direction to form N channel groups; wherein N is a positive integer and N is more than or equal to 2, and a pair of antennas is respectively configured for the N channel groups.
7. The adaptive scheduling method for wideband electrically tunable antennas of LTE system as claimed in claim 1, wherein the feedback signal includes the set of transmit antennas for the receiving end, the channel capacity provided by each antenna in the set of transmit antennas to the receiving end, and the performance loss ratio of the unselected transmit antennas to each transmit antenna in the set of transmit antennas.
8. The adaptive scheduling method for the wideband electrically tunable antenna of the LTE system according to claim 1, wherein the receiving end feeds back the signal-to-noise ratio of each channel to the transmitting end, and the receiving end calculates equivalent information quality information in three antenna modes according to the signal-to-noise ratio.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797987A (en) * | 2004-12-30 | 2006-07-05 | 都科摩（北京）通信技术研究中心有限公司 | Communication system for self-adaptive scheduling MIMO, and method for self-adaptive scheduling users |
| CN1893308A (en) * | 2005-07-06 | 2007-01-10 | 都科摩（北京）通信技术研究中心有限公司 | MIMO telecommunication system and user sheduling method |
| CN104469826A (en) * | 2013-09-13 | 2015-03-25 | 中国移动通信集团海南有限公司 | Antenna scheduling method and system |
| CN105049099A (en) * | 2015-06-25 | 2015-11-11 | 北京科技大学 | Multi-antenna self-adaptive scheduling method for LTE multi-antenna system |
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- 2019-11-01 CN CN201911058005.9A patent/CN111049561A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797987A (en) * | 2004-12-30 | 2006-07-05 | 都科摩（北京）通信技术研究中心有限公司 | Communication system for self-adaptive scheduling MIMO, and method for self-adaptive scheduling users |
| CN1893308A (en) * | 2005-07-06 | 2007-01-10 | 都科摩（北京）通信技术研究中心有限公司 | MIMO telecommunication system and user sheduling method |
| CN104469826A (en) * | 2013-09-13 | 2015-03-25 | 中国移动通信集团海南有限公司 | Antenna scheduling method and system |
| CN105049099A (en) * | 2015-06-25 | 2015-11-11 | 北京科技大学 | Multi-antenna self-adaptive scheduling method for LTE multi-antenna system |
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