CN107800461A - A kind of frequency compensation method and terminal - Google Patents
A kind of frequency compensation method and terminal Download PDFInfo
- Publication number
- CN107800461A CN107800461A CN201710887585.7A CN201710887585A CN107800461A CN 107800461 A CN107800461 A CN 107800461A CN 201710887585 A CN201710887585 A CN 201710887585A CN 107800461 A CN107800461 A CN 107800461A
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- Prior art keywords
- signal
- frequency
- terminal
- base station
- radiofrequency signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of frequency compensation method and terminal, methods described includes receiving the first radiofrequency signal by terminal；Frequency compensation is carried out to the first radiofrequency signal, generates the second radiofrequency signal；Receive or send the second radiofrequency signal.The present invention carries out frequency compensation by the first radiofrequency signal received to terminal so that the second radiofrequency signal for receiving or sending compensate for influenceing caused by Doppler effect, the communication performance for the terminal being effectively improved in the state of being moved in relative base station.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of frequency compensation method and terminal.
Background technology
In mobile communication system, the signal sent relative to the terminal of base station movement can be by the shadow of Doppler effect
Ring, cause the frequency for the signal that the frequency for the base station signal that terminal receives sends relative to base station to produce frequency displacement, or terminal
The frequency for the signal that the frequency of the transmission signal sent can receive relative to base station produces frequency displacement.
Present inventor has found in long-term research and development, due to the popularization of high-speed railway and the raising of train speed,
Using terminal can be influenceed by Doppler effect on bullet train, the communication performance of terminal is declined or even interrupt communication.
The content of the invention
The present invention provides a kind of frequency compensation method and terminal, with solve in the prior art terminal in the state of movement
Frequency displacement is produced, influences the technical problem of communication performance.
In order to solve the above technical problems, one aspect of the present invention is to provide a kind of frequency compensation method, bag
Include：
First radiofrequency signal is received by terminal；
Frequency compensation is carried out to first radiofrequency signal, generates the second radiofrequency signal；
Receive or send second radiofrequency signal.
In order to solve the above technical problems, another technical solution used in the present invention is to provide a kind of terminal, including：
Frequency mixer, for receiving the first radiofrequency signal；Frequency compensation, generation second are carried out to first radiofrequency signal
Radiofrequency signal；
Telecommunication circuit, receive or send second radiofrequency signal.
The present invention carries out frequency compensation by the first radiofrequency signal received to terminal so that second for receiving or sending
Radiofrequency signal compensate for influenceing caused by Doppler effect, be effectively improved in the state of being moved in relative base station
The communication performance of terminal.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, required in being described below to embodiment
The accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other accompanying drawings, wherein：
Fig. 1 is the schematic flow sheet of the embodiment of frequency compensation method one of the present invention；
Fig. 2 is the schematic flow sheet of another embodiment of frequency compensation method of the present invention；
Fig. 3 is the schematic flow sheet of the another embodiment of frequency compensation method of the present invention；
Fig. 4 is the structural representation of the embodiment of terminal one of the present invention；
Fig. 5 is the structural representation of another embodiment of terminal of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, the embodiment of frequency compensation method one of the present invention includes：
S101, pass through terminal the first radiofrequency signal of reception；
Optionally, terminal can be the electronic equipments such as mobile phone, tablet personal computer or game machine.
S102, frequency compensation is carried out to the first radiofrequency signal, generate the second radiofrequency signal；
Optionally, frequency compensation can be carried out by frequency mixer etc..
S103, reception send the second radiofrequency signal.
Optionally, terminal can be received or be sent the first radiofrequency signal, the second radiofrequency signal by antenna etc..
The embodiment of the present invention carries out frequency compensation by the first radiofrequency signal received to terminal so that receives or sends
The second radiofrequency signal compensate for influenceing caused by Doppler effect, be effectively improved the shape moved in relative base station
The communication performance of terminal under state.
Referring to Fig. 2, another embodiment of frequency compensation method of the present invention includes：
S201, receive base station signal；
First radiofrequency signal is received by terminal, in the present embodiment, the first radiofrequency signal is base station signal.
Optionally, terminal carries out frequency compensation according to the base station signal being currently received, if terminal connects in moving process
The base station source of the signal received is changed, then terminal carries out frequency compensation according to new base station.
The difference of S202, the frequency of calculation base station signal and the second radiofrequency signal frequency, obtains the first thermal compensation signal
Frequency compensation value；
Optionally, current translational speed is detected by terminal, if outpacing threshold value, opens the compensation to signal；
If being not above threshold speed, reception signal as usual.Because Doppler effect is relevant with the speed that terminal moves, and terminal
Translational speed change at any time, it is therefore desirable to according to the translational speed of terminal change frequency compensation value, for example, every 5
Second, 8 seconds or 10 seconds, frequency compensation value is once adjusted, or the translational speed with terminal, frequency compensation value is entered
Row adjustment in real time.
S203, base station signal and the first thermal compensation signal be mixed, obtain benchmark reception signal；
Specifically, when terminal is with respect to base station movement, turned to because frequency caused by Doppler effect becomes：
Wherein, v1For velocity of wave, v10For the translational speed of receiving terminal, v1sFor the translational speed of transmitting terminal, f1Sent out for transmitting terminal
The frequency of the signal gone out, f1' for receiving terminal receive signal frequency.In the present embodiment, velocity of wave is the light velocity, receiving terminal
Translational speed is the translational speed of terminal, and the translational speed of transmitting terminal is the translational speed of base station, as 0, what transmitting terminal was sent
The frequency of signal is the frequency of the signal of Base Transmitter, equal with the frequency of benchmark reception signal, the signal that receiving terminal receives
Frequency is the frequency of base station signal.
Optionally, terminal can be positioned according to positioning functions such as the GPS/ Big Dippeves that terminal carries, according to receiving
The source of signal base station is positioned, so as to judge terminal close to or away from base station.
In the present embodiment, when terminal is to close to the movement of the direction of base station, the translational speed v of terminal10For on the occasion of
The frequency compensation value of one thermal compensation signal is negative value.Specifically, pass through light velocity v1, terminal translational speed v10, base station mobile speed
Spend v1sWith the frequency f of benchmark reception signal1The frequency f for the base station signal that terminal is an actually-received is calculated1', then first mend
Repay the frequency Δ f of signal1=f1-f1'.When the frequency of benchmark reception signal is terminal and the base station geo-stationary, terminal connects
The frequency of the signal of the base station of receipts, base station signal and the first thermal compensation signal are mixed, obtain benchmark reception signal, now
The frequency of benchmark reception signal is equal with the frequency of the signal of Base Transmitter so that the communication of terminal and base station is not by Doppler
The influence of effect.
In the present embodiment, when being moved when terminal to the direction away from base station, the translational speed v of terminal10For negative value,
The frequency compensation value of one thermal compensation signal be on the occasion of.It is an actually-received specifically, terminal is calculated by the translational speed of terminal
Base station signal frequency f1', then the frequency Δ f of the first thermal compensation signal1=f1-f1'.The frequency of benchmark reception signal is terminal
During with base station geo-stationary, the frequency of the signal for the base station that terminal receives, base station signal and the first thermal compensation signal are mixed
Frequently, benchmark reception signal is obtained, now the frequency of benchmark reception signal is equal with the frequency of the signal of Base Transmitter so that eventually
The communication with base station is held not influenceed by Doppler effect.
S204, reception simultaneously handle benchmark reception signal.
Second radiofrequency signal, in the present embodiment, reception signal on the basis of the second radiofrequency signal are received by terminal.
Specifically, after terminal-pair benchmark reception signal is handled, corresponding display, such as display incoming call, information are made
Deng.
The embodiment of the present invention carries out frequency compensation by the first radiofrequency signal received to terminal so that the second of reception
Radiofrequency signal compensate for influenceing caused by Doppler effect, be effectively improved in the state of being moved in relative base station
The communication performance of terminal.
Referring to Fig. 3, the another embodiment of frequency compensation method of the present invention includes：
S301, receive reference emission signal；
First radiofrequency signal is received by terminal, in the present embodiment, transmission signal on the basis of the first radiofrequency signal, by
The processor of terminal produces, and receives reference emission signal by the telecommunication circuit of terminal.
S302, the frequency of calculating benchmark transmission signal and the frequency of the second radiofrequency signal difference obtain the second compensation letter
Number frequency compensation value；
Optionally, current translational speed is detected by terminal, if outpacing threshold value, opens the compensation to signal；
If being not above threshold speed, signal is sent as usual.Because Doppler effect is relevant with the speed that terminal moves, and terminal
Translational speed change at any time, it is therefore desirable to according to the translational speed of terminal change frequency compensation value, for example, every 5
Second, 8 seconds or 10 seconds, frequency compensation value is once adjusted, or the translational speed with terminal, frequency compensation value is entered
Row adjustment in real time.
S303, reference emission signal and the second thermal compensation signal be mixed, obtain transmission signal；
Specifically, when terminal is with respect to base station movement, turned to because frequency caused by Doppler effect becomes：
Wherein, v2For velocity of wave, v20For the translational speed of receiving terminal, v2sFor the translational speed of transmitting terminal, f2Sent out for transmitting terminal
The frequency of the signal gone out, f2' for receiving terminal receive signal frequency.In the present embodiment, velocity of wave is the light velocity, receiving terminal
Translational speed is the translational speed of base station, as 0, the translational speed of transmitting terminal is the translational speed of terminal, what transmitting terminal was sent
The frequency of signal is the frequency of the actual transmission signal sent of terminal, and the frequency for the signal that receiving terminal receives connects for base station is actual
The frequency of the signal of receipts, with the processor of terminal caused by reference emission signal frequency it is equal.
Optionally, terminal can be positioned according to positioning functions such as the GPS/ Big Dippeves that terminal carries, according to receiving
The source of signal base station is positioned, so as to judge terminal close to or away from base station.
In the present embodiment, when terminal is to close to the movement of the direction of base station, the translational speed v of terminal2sFor on the occasion of
The frequency compensation value of two thermal compensation signals is negative value.Specifically, pass through light velocity v2, base station translational speed v20, terminal mobile speed
Spend v2sWith the frequency f of reference emission signal2' the frequency of the actual transmission signal sent of terminal is calculatedThe then frequency Δ f of the second thermal compensation signal2=f2'-f2.The frequency of reference emission signal is terminal and base
Stand geo-stationary when, the frequency for the signal that terminal is sent to base station, reference emission signal and the second thermal compensation signal are mixed
Frequently, transmission signal is obtained.Transmission signal produces Doppler effect during terminal is to Base Transmitter, and final base station is actual
The frequency of the signal of reception is equal with the frequency of reference emission signal so that the communication of terminal and base station is not by Doppler effect
Influence.
In the present embodiment, when being moved when terminal to the direction away from base station, the translational speed v of terminal2sFor negative value,
The frequency compensation value of two thermal compensation signals be on the occasion of.Specifically, pass through light velocity v2, base station translational speed v20, terminal mobile speed
Spend v2sWith the frequency f of reference emission signal2' the frequency of the actual transmission signal sent of terminal is calculatedThe then frequency Δ f of the second thermal compensation signal2=f2'-f2.The frequency of benchmark reception signal is terminal and institute
When stating base station geo-stationary, the frequency for the signal that terminal is sent to base station, reference emission signal and the second thermal compensation signal are carried out
Mixing, obtains transmission signal.Transmission signal produces Doppler effect during terminal is to Base Transmitter, and final base station is real
The frequency for the signal that border receives is equal with the frequency of reference emission signal so that the communication of terminal and base station is not imitated by Doppler
The influence answered.
S304, send transmission signal.
Second radiofrequency signal is sent by terminal, in the present embodiment, the second radiofrequency signal is transmission signal.
The embodiment of the present invention carries out frequency compensation by the first radiofrequency signal sent to terminal so that the second radio frequency is believed
It number compensate for influenceing caused by Doppler effect, the terminal being effectively improved in the state of being moved in relative base station
Communication performance.
Referring to Fig. 4, the embodiment of terminal one of the present invention includes：
Frequency mixer 101, for receiving the first radiofrequency signal；Frequency compensation is carried out to the first radiofrequency signal, generation second is penetrated
Frequency signal；
Telecommunication circuit 102, receive the second radiofrequency signal.
Specifically, telecommunication circuit 102 includes the first radio frequency signal receiver 1021, frequency compensator 1022 and second is penetrated
Frequency signal receiver 1023, the first radio frequency signal receiver 1021 are used to receive the first radiofrequency signal；Frequency compensator 1022 is used
Sent in by the first thermal compensation signal to frequency mixer 101；Second radio frequency signal receiver 1023 is used to receive the second radiofrequency signal.
In the present embodiment, terminal also includes processor 103, for handling the second radiofrequency signal.
Implement specifically, the radiofrequency signal of terminal-pair first carries out frequency compensated process referring to said frequencies compensation method
Example, will not be repeated here.
The embodiment of the present invention carries out frequency compensation by the first radiofrequency signal received to terminal so that the second of reception
Radiofrequency signal compensate for influenceing caused by Doppler effect, be effectively improved in the state of being moved in relative base station
The communication performance of terminal.
Referring to Fig. 5, another embodiment of terminal of the present invention includes：
Frequency mixer 201, for receiving the first radiofrequency signal；Frequency compensation is carried out to the first radiofrequency signal, generation second is penetrated
Frequency signal；
Telecommunication circuit 202, receive the second radiofrequency signal.
Specifically, telecommunication circuit 202 includes the first radio frequency signal receiver 2023, frequency compensator 2022 and second is penetrated
Frequency signal receiver 2021, the first radio frequency signal receiver 2023 are used to receive the first radiofrequency signal；Frequency compensator 2022 is used
Sent in by the first thermal compensation signal to frequency mixer 201；Second radio frequency signal receiver 2021 is used to receive the second radiofrequency signal.
In the present embodiment, terminal also includes processor 203, for generating the first radiofrequency signal.
Implement specifically, the radiofrequency signal of terminal-pair first carries out frequency compensated process referring to said frequencies compensation method
Example, will not be repeated here.
The embodiment of the present invention carries out frequency compensation by the first radiofrequency signal sent to terminal so that the second radio frequency is believed
It number compensate for influenceing caused by Doppler effect, the terminal being effectively improved in the state of being moved in relative base station
Communication performance.
Embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this
The equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be included within the scope of the present invention.
Claims (10)
- A kind of 1. frequency compensation method, it is characterised in that including：First radiofrequency signal is received by terminal；Frequency compensation is carried out to first radiofrequency signal, generates the second radiofrequency signal；Receive or send second radiofrequency signal.
- 2. according to the method for claim 1, it is characterised in thatFirst radiofrequency signal is base station signal, reception signal on the basis of second radiofrequency signal.
- 3. according to the method for claim 2, it is characterised in that frequency compensated method is carried out to first radiofrequency signal Specifically include：The difference of the frequency of the base station signal and the frequency of the benchmark reception signal is calculated, obtains the frequency of the first thermal compensation signal Rate offset；The base station signal and the first thermal compensation signal are mixed, obtain benchmark reception signal.
- 4. according to the method for claim 3, it is characterised in thatWhen the terminal close to the direction of the base station to when moving, the frequency compensation value of first thermal compensation signal is negative value； When being moved when the terminal to the direction away from the base station, the frequency compensation value of first thermal compensation signal be on the occasion of.
- 5. according to the method for claim 2, it is characterised in thatWhen the frequency of the benchmark reception signal is the terminal and the base station geo-stationary, the base of the terminal reception The frequency for the signal stood.
- 6. according to the method for claim 1, it is characterised in thatTransmission signal on the basis of first radiofrequency signal, second radiofrequency signal are believed for the actual transmitting sent to base station Number.
- 7. according to the method for claim 6, it is characterised in that frequency compensated method is carried out to first radiofrequency signal Specifically include：The difference of the frequency of the reference emission signal and the frequency of the transmission signal is calculated, obtains the frequency of the second thermal compensation signal Rate offset；The reference emission signal and the second thermal compensation signal are mixed, obtain transmission signal.
- 8. according to the method for claim 7, it is characterised in thatWhen the terminal close to the direction of the base station to when moving, the frequency compensation value of second thermal compensation signal is negative value； When being moved when the terminal to the direction away from the base station, the frequency compensation value of second thermal compensation signal be on the occasion of.
- 9. according to the method for claim 6, it is characterised in thatWhen the frequency of the reference emission signal is the terminal and the base station geo-stationary, the terminal is sent out to the base station The frequency for the signal penetrated.
- A kind of 10. terminal, it is characterised in that including：Frequency mixer, for receiving the first radiofrequency signal；Frequency compensation, generation the second radio frequency letter are carried out to first radiofrequency signal Number；Telecommunication circuit, receive or send second radiofrequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710887585.7A CN107800461A (en) | 2017-09-27 | 2017-09-27 | A kind of frequency compensation method and terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710887585.7A CN107800461A (en) | 2017-09-27 | 2017-09-27 | A kind of frequency compensation method and terminal |
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| CN107800461A true CN107800461A (en) | 2018-03-13 |
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| CN201710887585.7A Pending CN107800461A (en) | 2017-09-27 | 2017-09-27 | A kind of frequency compensation method and terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111163416A (en) * | 2018-10-22 | 2020-05-15 | 中国移动通信有限公司研究院 | Information acquisition method, information transmission method, terminal and first network equipment |
| CN115211082A (en) * | 2020-03-06 | 2022-10-18 | 大陆汽车科技有限公司 | Method and communication device for compensating for doppler effect in received wireless communication signals |
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| US20080171515A1 (en) * | 2007-01-12 | 2008-07-17 | Sung-Jun Kim | Apparatus and method for estimating frequency offset in wireless communication system |
| CN101383631A (en) * | 2007-09-05 | 2009-03-11 | 中国科学院微电子研究所 | Frequency Offset Estimation and Compensation Method for TD-SCDMA Terminal |
| CN103929221A (en) * | 2013-01-11 | 2014-07-16 | 正文科技股份有限公司 | Frequency compensation device and frequency compensation method |
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2017
- 2017-09-27 CN CN201710887585.7A patent/CN107800461A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080171515A1 (en) * | 2007-01-12 | 2008-07-17 | Sung-Jun Kim | Apparatus and method for estimating frequency offset in wireless communication system |
| CN101383631A (en) * | 2007-09-05 | 2009-03-11 | 中国科学院微电子研究所 | Frequency Offset Estimation and Compensation Method for TD-SCDMA Terminal |
| CN103929221A (en) * | 2013-01-11 | 2014-07-16 | 正文科技股份有限公司 | Frequency compensation device and frequency compensation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111163416A (en) * | 2018-10-22 | 2020-05-15 | 中国移动通信有限公司研究院 | Information acquisition method, information transmission method, terminal and first network equipment |
| CN111163416B (en) * | 2018-10-22 | 2021-05-11 | 中国移动通信有限公司研究院 | Information acquisition method, information transmission method, terminal and first network equipment |
| US11805462B2 (en) | 2018-10-22 | 2023-10-31 | China Mobile Communication Co., Ltd Research Institute | Information acquisition method and sending method, and terminal and first network device |
| CN115211082A (en) * | 2020-03-06 | 2022-10-18 | 大陆汽车科技有限公司 | Method and communication device for compensating for doppler effect in received wireless communication signals |
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