CN108605202A - A kind of communication means and terminal - Google Patents
A kind of communication means and terminal Download PDFInfo
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- CN108605202A CN108605202A CN201680080802.5A CN201680080802A CN108605202A CN 108605202 A CN108605202 A CN 108605202A CN 201680080802 A CN201680080802 A CN 201680080802A CN 108605202 A CN108605202 A CN 108605202A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
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Abstract
This application discloses a kind of communication means and terminal, method includes：The rate travel for determining terminal determines the calibration factor of the messaging parameter of terminal according to rate travel.Terminal calibrates messaging parameter after the calibration factor of adjustment messaging parameter in time as a result, and the offset that can match the messaging parameter of the terminal of high-speed mobile quickly changes, and then improves communication performance.
Description
This application involves the communications field more particularly to a kind of communication means and terminals.
With the development of communication technology, the demand of user's using terminal progress mobile office is more and more, and therefore, the requirement to the service feature of the terminal communication of high-speed mobile is also higher and higher.
But it is based on history and empirical data, terminal is when fast moving, if communication strategy when still using static, it may appear that the phenomenon that communication performance of terminal reduces, such as communication quality decline.
Summary of the invention
This application provides a kind of communication means and terminals, it is therefore intended that the terminal solved in high-speed mobile carries out the technical issues of communication performance reduces when data communication.
The first aspect of the application provides a kind of communication means, including following steps: terminal determines the rate travel of terminal；The calibration factor of the messaging parameter of terminal is determined according to rate travel.As it can be seen that being communicated after determining the calibration factor of messaging parameter based on rate travel with the messaging parameter after calibrating, reduce or avoid as far as possible various communication deviations, improves communication performance.
The second aspect of the application provides a kind of terminal, which includes with flowering structure: the memory and processor of data caused by storage application program and application program operation, processor passes through executing application, to determine the rate travel of terminal, and determine according to rate travel the calibration factor of the messaging parameter of terminal.As it can be seen that terminal after the calibration factor for being determined messaging parameter based on rate travel, is communicated with the messaging parameter after calibrating, reduce or avoid as far as possible various communication deviations, improves communication performance.
In one implementation, terminal determines the calibration parameter of the messaging parameter of terminal according to rate travel, if include: terminal rate travel be greater than or equal to first threshold, use the first calibration factor, the channel frequency of carrier signal that terminal receives is calibrated；If the rate travel of terminal is less than first threshold, and is greater than or equal to the second threshold less than first threshold, then preset second calibration factor is used, the channel frequency of carrier signal that terminal receives is calibrated；If the rate travel of terminal is less than the second threshold, preset third calibration factor, the letter received to terminal are used
Road frequency of carrier signal is calibrated.Thus, calibration parameter of the terminal in the channel frequency of carrier signal for determining terminal based on rate travel, and signal of communication entrained by channel carrier signal is demodulated with the channel frequency of carrier signal after calibrating, when rate travel is lower, using lesser calibration factor, and then reduce frequency deviation adjustment shake, and when rate travel is higher, using biggish calibration factor, accelerate the rate of frequency-tracking, to match the quick variation of the frequency deviation fast moved, communication performance is preferably improved.
In one implementation, terminal determines the calibration factor of the messaging parameter of terminal according to rate travel, specifically: if the rate travel of terminal is greater than or equal to first threshold, uses preset first interpolation factor set, calibrates to the channel estimation value of terminal；If the rate travel of terminal is less than first threshold, and is greater than or equal to the second threshold less than first threshold, then preset second interpolation factor set is used, the channel estimation value of terminal is calibrated；If the rate travel of terminal is less than second threshold, preset third interpolation factor set is used, the channel estimation value of terminal is calibrated.Thus, calibration factor of the terminal in the channel estimation value for determining terminal based on rate travel, calibrated based on rate travel difference with the channel estimation value of different interpolation factor set centerings, and channel is determined with the channel estimation value after calibrating, and then signal of communication entrained by the carrier signal in channel is demodulated, to match the quick variation for not having to rate travel lower channel deviation, communication performance is preferably improved.
In one implementation, terminal is after determining the rate travel of terminal, it is also used to: based on rate travel, adjust the parameter of terminal network selection, so that the target network that terminal is communicated based on the parameter selection of adjustment, the base station of target network is minimum at a distance from terminal, and distance is with the mobile reduction of terminal.Terminal determines distance recently based on rate travel as a result, and the target network of moving direction direction is communicated, and preferably improves communication performance.
In ord to more clearly illustrate embodiments of the present application or technical solution in the prior art, the drawings to be used in the description of the embodiments or prior art will be briefly described below, apparently, the drawings in the following description are only some examples of the present application, for those of ordinary skill in the art, without creative efforts, it is also possible to obtain other drawings based on these drawings.
The schematic diagram that Fig. 1 is communicated between terminal and base station；
Fig. 2 and Fig. 3 is respectively a kind of flow chart of communication means provided in an embodiment of the present invention；
Fig. 4 is the exemplary diagram of the embodiment of the present invention；
Fig. 5 is a kind of another flow chart of communication means provided in an embodiment of the present invention；
Fig. 6 is another exemplary diagram of the embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of terminal provided in an embodiment of the present invention.
Fig. 1 show the schematic diagram communicated between terminal and base station, such as, when terminal on railway in high-speed mobile is communicated with base station, in the cell serves network locating for terminal, pass through the carrier signal transmission data-signal in channel between terminal and base station.
Terminal is in fast moving, and the phenomenon that carrier signal in channel also will appear Doppler frequency deviation, or also will appear deviation to the estimated value of channel locating for carrier signal, these deviations may cause net, influences terminal communication performance.
Wherein, Doppler effect refers to, when wave source shifts to observer, observer receives frequency and gets higher wave, and when wave source is far from observer, observer receives frequencies go lower.In this way, the frequency of channel carrier signal and/or channel estimation value received by terminal will appear deviation when terminal is moved relative to base station.Assuming that the wavelength of the channel carrier signal between base station and terminal is λ, velocity of wave is c, the rate travel of terminal is v, terminal is when mobile close to base station, the frequency of channel carrier signal is (c+v)/λ, and terminal is when mobile far from base station, and the frequency of channel carrier signal is (c-v)/λ, correspondingly, channel estimation value also will appear similar deviation.
Shown in Fig. 2, for a kind of implementation flow chart of communication means provided in an embodiment of the present invention, the communication performance occurred when solving the problems, such as that the terminal of high-speed mobile is communicated declines, and for the communication in Fig. 2 by terminal in high-speed rail, terminal is solved the above problems by executing following steps:
S201: the highspeed flag in acquisition system message.
Here system message refers to the message in network locating for terminal, whether subzone network where highspeed flag can characterize terminal supports the selection of ZC in high-speed mobile (Zadoff-Chu) sequence cyclic shift, thus whether characterization terminal is in high-speed rail private network, i.e., characterization terminal is no in state by bus.
S202: judging the value of highspeed flag, if the value of highspeed flag is true, shows that terminal is in high-speed moving state, execute S203 to S204, if the value of highspeed flag is false, shows that terminal is likely to be at non-high-speed moving condition, execute S205.
S203: the parameter sensing of each sensor (sensor) is obtained by sensor hub (sensor hub).
Wherein, sensor here can have: the equipment such as acceleration transducer, gyroscope and barometer.Corresponding parameter sensing can have: the parameters such as acceleration, gradient and air pressure.
S204: the parameter sensing based on the acquisition in step S203 obtains the rate travel of terminal, judges whether the rate travel of terminal is more than preset first threshold.
Wherein, parameter sensing includes the parameter sensing that each sensor obtains, and the rate travel of terminal is obtained based at least one parameter sensing.
S205: judging whether terminal is in state by bus by sensor hub, if terminal is in state by bus, executes S206.
In the present embodiment, sensor hub judges whether terminal is in state by bus in conjunction with specific implementation using the general-purpose algorithm such as classifier, decision tree by integrating the parameter sensing of each sensor.
S206: obtaining the rate travel of terminal using the GPS (Global Positioning System, global positioning system) in terminal, executes S207.
In the present embodiment, before the rate travel for obtaining terminal using GPS, first passing through sensor hub judges whether terminal is in state by bus in advance, only GPS can be just opened when terminal is in state by bus, the rate travel that terminal is obtained using GPS, as a result, when terminal is not on state by bus, the acquisition that rate travel is carried out without triggering GPS, avoids unnecessary resource consumption.
S207: judge whether rate travel is greater than or equal to first threshold.
Above first threshold can be set according to demand, such as 200km/h (kilometer per hour).
The purpose of above-mentioned S201~S207 is to obtain the rate travel of terminal, and judges whether the rate travel of terminal is more than first threshold.
When S204 judges the rate travel of terminal more than (being greater than or equal to) first threshold, or, when judging that rate travel is more than first threshold in S207, channel frequency of carrier signal received by terminal is likely to occur deviation, if can have channel carrier signal without adjusting or calibrating in time and be taken
The case where signal of communication of band can not demodulate, the phenomenon that causing net or interrupting service.
In the present embodiment, terminal can calibrate the frequency of carrier signal in channel based on real time rate, come the case where avoiding terminal from falling net or terminal traffic, specifically, terminal is by executing S208~S211, to realize the frequency calibration of carrier signal in channel, as shown in Figure 2, if rate travel is more than first threshold, S208 is executed, if rate travel is not above first threshold, S209 is executed:
S208: preset first calibration factor is used, the channel frequency of carrier signal received is calibrated.
S209: judging whether rate travel is greater than or equal to preset second threshold and is less than first threshold, and second threshold is less than first threshold, and second threshold can be 100km/h or 80km/h, if rate travel is more than second threshold, S210 is executed, if rate travel is less than second threshold, executes S211.
S210: preset second calibration factor is used, the channel frequency of carrier signal received is calibrated.
S211: preset third calibration factor is used, the channel frequency of carrier signal received is calibrated.
Here the value of the first calibration factor, the second calibration factor and third calibration factor is between 0 and 1, and the first calibration factor is greater than the second calibration factor, and the second calibration factor is greater than third calibration factor.
In the present embodiment when being calibrated using calibration factor to the channel frequency of carrier signal received, it can specifically be realized using following formula (1):
F1=f2+a × △ f (1)
Wherein:
F1 is the channel frequency of carrier signal after calibration.
F2 is the channel frequency of carrier signal that terminal receives.
△ f is calibration frequency, and △ f can be positive value in the concrete realization, or negative value.
Wherein, the related content based on hereinbefore Doppler effect, the positive and negative value of △ f depend on the relative motion situation between terminal and base station.For example, △ f value is positive value when terminal is mobile close to base station, when terminal is mobile far from base station, △ f value is negative value.
And it is opposite to depend on terminal based on the related content of hereinbefore Doppler effect for the size value of △ f
Ratio between the propagation rate in medium (air) of rate travel v and signal in base station.
A is calibration factor, the difference of rate travel based on terminal, a value is different, such as: when the rate travel of terminal is greater than first threshold, a value a1 (terminal is in the high-speed rail of high-speed cruising), when the rate travel of terminal is less than first threshold but is greater than second threshold, a value a2 (terminal is on the vehicles such as bus of high-speed cruising), when the rate travel of terminal is less than second threshold, a value a3 (terminal is in static or ambulatory status), a1 is greater than a2, and a2 is greater than a3.
Thus, terminal demodulates signal of communication entrained by channel carrier signal with the channel frequency of carrier signal after calibrating, such as: steady frequency calibration scheme is used under non-high-speed rail scene, lesser calibration factor is such as used, frequency deviation adjustment shake is reduced, and uses the frequency deviation Adjusted Option quickly tracked under high-speed rail scene, such as use biggish calibration factor, accelerate the rate of frequency-tracking, to match the quick variation of frequency deviation under high-speed rail scene, and then improves communication performance.
When S204 judges the rate travel of terminal more than first threshold, or, when judging that rate travel is more than first threshold in S207, deviation may also occur in channel estimation value where carrier signal received by terminal, if without adjusting or calibrating in time, the phenomenon that having the case where signal of communication entrained by carrier signal can not demodulate, causing net or interrupting service.
In the present embodiment, terminal realizes the calibration to the channel estimation value of terminal by executing S212 to S215, as shown in Figure 3, if rate travel is greater than or equal to (being more than) first threshold, S212 is executed, if rate travel is not above first threshold, S213 is executed:
S212: preset first interpolation factor set is used, channel estimation value is calibrated.
S213: judge whether rate travel is greater than or equal to and (is more than) preset second threshold and be less than first threshold, second threshold is less than first threshold, if rate travel is more than second threshold, executes S214, if rate travel is less than second threshold, S215 is executed.
S214: preset second interpolation factor set is used, channel estimation value is calibrated.
S215: preset third interpolation factor set is used, channel estimation value is calibrated.
Here the first interpolation factor set, the second interpolation factor set is different from the interpolation factor in third interpolation factor, and the value of these interpolation factors is between 0 and 1, and adjustable.
The frequency domain response value at pilot channel can be estimated in the present embodiment first with pilot tone, interpolation scheme is recycled to obtain the channel estimation value at non-pilot carrier wave, for example, realizing that the channel estimation value for going out carrier wave to non-pilot is calibrated using following formula (2):
H (m, l)=b1 × H (m-1, l)+b2 × H (m+1, l)+b3 × H (m, l-1)+b4 × H (m, l+1) (2)
Wherein:
H (m, l) m in is line identifier, l is column mark, H (m, l) channel estimation value locating for the pilot tone for m row l column, H (m-1, l), H (m+1, l), H (m, l-1) and H (m, l+1) is respectively channel estimation value locating for the adjacent four non-pilot carrier signal of H (m, l), the lattice that surrounding centered on H (m, l) (up and down) is closed on as shown in Figure 4.
B1~b4 is respectively interpolation factor, the value of the difference of rate travel based on terminal, b1~b4 is different, such as: when the rate travel of terminal is greater than first threshold, when be in the high-speed rail of high-speed cruising such as terminal, b1~b4 can be with value are as follows: 0.3,0.3,0.7 and 0.7；When the rate travel of terminal is less than first threshold but is greater than second threshold, when be on the vehicles such as bus of high-speed cruising such as terminal, b1~b4 can be with value are as follows: 0.5,0.5,0.5 and 0.5；When the rate travel of terminal is less than second threshold, if terminal is in static or ambulatory status, b1~b4 can be with value are as follows: 0.7,0.7,0.3 and 0.3.
Terminal determines channel with the channel estimation value after calibrating as a result, and demodulates to signal of communication entrained by the carrier signal in channel, to match the quick variation of high-speed rail scene lower channel deviation, and then improves communication performance.
In addition when vehicle where judging terminal in S204 is in rate travel more than first threshold, alternatively, when judging that rate travel is more than first threshold in S207, terminal may also network selection strategy efficiency it is lower, the phenomenon that causing net or interrupting service.
In the present embodiment, terminal if rate travel is more than first threshold, executes S216 as shown in Figure 5 by executing S216 to S217, optimization of the realization to terminal network selection strategy:
S216: each subzone network locating for terminal is determined.
S217: in each subzone network, adjust the parameter of terminal network selection, so that the target network that the parameter selection of network selection of the terminal based on adjustment is communicated, the base station of target network is minimum at a distance from terminal, and distance is with the mobile reduction of terminal, that is, the moving direction of terminal is towards the base station of target network.
Wherein, here the parameter of terminal network selection can be the weight parameter or lag parameter of the messaging parameters such as signal strength, change network selection strategy using these weight parameters adjusted or lag parameter is configured, network reselection frequently is done, the communication network of the base station of the moving direction institute direction to determine and terminal nearest apart from terminal is target network.
As shown in Figure 6, terminal, peripheral has tetra- subzone networks of A, B, C, D, and the moving direction of terminal is as shown in the figure, thus, determine that subzone network C is target network, terminal improves communication performance by carrying out data communication apart from nearest and increasingly closer subzone network.
It should be noted that, in above each scheme for improving communication quality: S208~S211, S212 to S215 and S216 to S217, it can carry out simultaneously, it can also be according to terminal current demand, such as electric energy surplus or terminal current state demand select the improvement of one of those or two schemes realization communication qualities.For example, the scheme of S208~S211 and S212 to S215 can be adapted for the terminal in communication connection state, such as carrying out the terminal of voice communication or short message transmission；And S216 to S217 can be adapted for the terminal for not carrying out any data transmission.
Fig. 7 is the structural schematic diagram of terminal in Fig. 1, and the terminal in Fig. 7 may include with flowering structure:
Bus 701, to connect all parts in terminal.
Communication interface 702 and antenna 703, antenna 703 are connected in bus 701 by communication interface 702.
Modem 704 is connected in bus 701.
Memory 705 is connected in bus 701, runs generated data for storing application program and application program.
Processor 706, for executing application, to determine the rate travel of terminal, and the calibration factor of the messaging parameter of terminal is determined according to rate travel, thus, the messaging parameter of terminal is adjusted accordingly based on determining calibration factor, and later, modem 704 is communicated using messaging parameter adjusted by antenna 703.
Fig. 7 show a kind of realization structure of terminal, and the realization function of each structure can be with reference to hereinbefore realizing in terminal, and and will not be described here in detail.
Each embodiment in this specification is described in a progressive manner, and the highlights of each of the examples are differences from other embodiments, same or similar part be may refer to each other between each embodiment.
Claims (11)
- A kind of communication means, which is characterized in that be applied to terminal, which comprisesThe terminal determines the rate travel of the terminal；The calibration factor of the messaging parameter of the terminal is determined according to the rate travel.
- The method according to claim 1, wherein the messaging parameter includes: the channel frequency of carrier signal of the terminal.
- According to the method described in claim 2, it is characterized in that, determining the calibration factor of the messaging parameter of the terminal according to the rate travel, comprising:If the rate travel of the terminal is greater than or equal to the first threshold, preset first calibration factor is used, the channel frequency of carrier signal that the terminal receives is calibrated；If the rate travel of the terminal is less than the first threshold, and is greater than or equal to second threshold, then preset second calibration factor is used, the channel frequency of carrier signal that the terminal receives is calibrated；If the rate travel of the terminal is less than the second threshold, preset third calibration factor is used, the channel frequency of carrier signal that the terminal receives is calibrated,Wherein, the first threshold is greater than the second threshold.
- The method according to claim 1, wherein the messaging parameter includes: the channel estimation value of the terminal.
- According to the method described in claim 4, it is characterized in that, determining the calibration factor of the messaging parameter of the terminal according to the rate travel, comprising:If the rate travel of the terminal is greater than or equal to the first threshold, preset first interpolation factor set is used, the channel estimation value of the terminal is calibrated；If the rate travel of the terminal is less than the first threshold, and is greater than or equal to second threshold, then preset second interpolation factor set is used, the channel estimation value of the terminal is calibrated；If the rate travel of the terminal is less than the second threshold, preset third interpolation factor set is used, the channel estimation value of the terminal is calibrated；Wherein, the first threshold is greater than the second threshold.
- The method according to claim 1, wherein the messaging parameter of the terminal, comprising: the parameter of terminal network selection.
- According to the method described in claim 6, it is characterized in that, after the rate travel for determining the terminal, further includes:Based on the rate travel, adjust the parameter of the terminal network selection, so that the target network that the terminal is communicated based on the parameter selection of the adjustment, the base station of the target network is minimum at a distance from the terminal, and the distance is with the mobile reduction of the terminal.
- A kind of terminal, which is characterized in that including memory and processor, in which:The memory runs generated data for storing application program and application program；The processor, for executing the application program, to realize following functions: determining the rate travel of the terminal, and determine according to the rate travel calibration factor of the messaging parameter of the terminal.
- Terminal according to claim 8, which is characterized in that the processor determines the calibration factor of the messaging parameter of the terminal according to the rate travel, specifically:If the rate travel of the terminal is greater than or equal to preset first threshold, the processor uses preset first calibration factor, calibrates to the channel frequency of carrier signal that the terminal receives；If the rate travel of the terminal is less than the first threshold, and is greater than or equal to preset second threshold, the processor uses preset second calibration factor, calibrates to the channel frequency of carrier signal that the terminal receives；If the rate travel of the terminal is less than the second threshold, the processor uses preset third calibration factor, calibrates to the channel frequency of carrier signal that the terminal receives,Wherein, the first threshold is greater than the second threshold.
- Terminal according to claim 8, which is characterized in that the processor determines the calibration factor of the messaging parameter of the terminal according to the rate travel, specifically:If the rate travel of the terminal is greater than or equal to preset first threshold, preset first interpolation factor set is used, the channel estimation value of the terminal is calibrated；If the rate travel of the terminal is less than the first threshold, and is greater than or equal to preset second threshold, then preset second interpolation factor set is used, the channel estimation value of the terminal is calibrated；If the rate travel of the terminal is less than the second threshold, preset third interpolation factor set is used, the channel estimation value of the terminal is calibrated；Wherein, the first threshold is greater than the second threshold.
- Terminal according to claim 8, which is characterized in that the processor is also used to after the rate travel for determining the terminal:Based on the rate travel, the parameter of the terminal network selection is adjusted, so that the target network that the terminal is communicated based on the parameter selection of the adjustment, the base station of the target network is minimum at a distance from terminal, and the distance is with the mobile reduction of terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2016/096930 WO2018035851A1 (en) | 2016-08-26 | 2016-08-26 | Communication method and terminal |
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| CN108605202A true CN108605202A (en) | 2018-09-28 |
| CN108605202B CN108605202B (en) | 2021-02-05 |
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| CN201680080802.5A Active CN108605202B (en) | 2016-08-26 | 2016-08-26 | Communication method and terminal |
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| CN112995409B (en) * | 2019-12-02 | 2022-03-11 | 荣耀终端有限公司 | Display method of intelligent communication strategy effective scene, mobile terminal and computer readable storage medium |
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| CN100459802C (en) * | 2005-10-26 | 2009-02-04 | 华为技术有限公司 | Method and system for implementing cellular communication system switching |
| KR101459014B1 (en) * | 2008-02-04 | 2014-11-07 | 삼성전자주식회사 | Apparatus and method for frequency control in mobile communication system |
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| CN101686481A (en) * | 2008-09-26 | 2010-03-31 | 鼎桥通信技术有限公司 | Method and device for estimating moving velocity of terminal |
| CN102209332A (en) * | 2010-03-30 | 2011-10-05 | 联芯科技有限公司 | Control strategy configuration method and device based on movement speed of terminal |
| CN102223326A (en) * | 2011-06-21 | 2011-10-19 | 中兴通讯股份有限公司 | Channel estimation method and device based on Doppler frequency shift |
| CN202425053U (en) * | 2011-12-23 | 2012-09-05 | 重庆重邮信科通信技术有限公司 | Mobile terminal service cell reselection parameter computing device and mobile terminal |
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| CN108605202B (en) | 2021-02-05 |
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Effective date of registration: 20210420 Address after: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee after: Honor Device Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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