CN109995422A - Uplink synchronisation method, device, storage medium and electronic equipment - Google Patents
Uplink synchronisation method, device, storage medium and electronic equipment Download PDFInfo
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
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- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2662—Arrangements for Wireless System Synchronisation
- H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
- H04B7/2678—Time synchronisation
- H04B7/2681—Synchronisation of a mobile station with one base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
This disclosure relates to a kind of uplink synchronisation method, device, storage medium and electronic equipment, this method comprises: in the state that the uplink and downlink of the first electronic equipment are synchronous, when the distance of the first electronic equipment and the second electronic equipment changes, obtain it is inclined when current multiple first uplinks of the second electronic equipment transmission, then by according to multiple first uplinks having received when be filtered to obtain the first uplink adjusted value partially；When the first uplink adjusted value reaches preset the first adjustment thresholding, the timing frame head of upstream data is adjusted, according to the first adjustment value to keep uplink synchronous.Therefore, uplink synchronous processing can be realized in the case where not accessing special channels, simplify uplink synchronous operation.
Description
Technical Field
The present disclosure relates to the field of communications, and in particular, to an uplink synchronization method, apparatus, storage medium, and electronic device.
Background
In the field of wireless communication, uplink synchronization of an uplink channel is a key, and uplink synchronization refers to complete synchronization when an uplink signal of a first electronic device, for example, a User Equipment (UE), is transmitted to a second electronic device, for example, a Base Station (BS), which is in communication with the first electronic device. Through uplink synchronization, the code channels using orthogonal spread spectrum codes can be completely orthogonal when being despread at the BS, and multiple access interference cannot be generated among the code channels. When the distance between the first electronic device and the second electronic device changes, the offset of the timing frame header of the uplink data and the downlink data may be caused, and when the offset is too large, the uplink data may be out of step. In the prior art, a first electronic device needs to perform coding and transmission processing of an access channel, and a second electronic device needs to perform timing offset detection of the access channel, and then send the detected timing offset to the first electronic device, so as to perform transmission timing adjustment, thereby implementing uplink synchronization.
Disclosure of Invention
In order to overcome the problems in the prior art, the present disclosure provides an uplink synchronization method, an uplink synchronization device, a storage medium, and an electronic device.
According to a first aspect of the embodiments of the present disclosure, an uplink synchronization method is provided, which is applied to a first electronic device, and the method includes:
under the state that the uplink and the downlink of the first electronic device are synchronous, when the distance between the first electronic device and the second electronic device changes, acquiring a plurality of current first uplink time offsets sent by the second electronic device, wherein the second electronic device is an electronic device which communicates with the first electronic device, and the plurality of first uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device;
obtaining a first uplink adjustment value by performing filtering processing according to the received plurality of first uplink time offsets;
and when the first uplink adjusting value reaches a preset first adjusting threshold, adjusting a timing frame header of uplink data according to the first adjusting value to keep uplink synchronization.
Optionally, the method further includes:
saving the first uplink adjustment value as a historical uplink adjustment value in the first electronic device;
and when the first electronic equipment is out of synchronization in the uplink, adjusting a timing frame header of uplink data by using the historical uplink adjustment value so as to obtain uplink synchronization again.
Optionally, the method further includes:
when the uplink synchronization can not be obtained again after the timing frame header of the uplink data is adjusted by using the historical uplink adjustment value, a second uplink adjustment value is obtained according to the signal quality information of the downlink data;
filtering according to the second uplink adjustment value and the first uplink adjustment value to obtain a third uplink adjustment value;
and adjusting the timing frame header of the uplink data by using the third uplink adjustment value so as to obtain uplink synchronization again.
Optionally, the method further includes:
and when the uplink synchronization fails, adjusting the third uplink adjustment value within a preset adjustment value range according to a preset step length, and after adjusting the third uplink adjustment value each time, adjusting the timing frame header of the uplink data by using the adjusted third uplink adjustment value until the uplink synchronization is obtained again.
Optionally, when the uplink synchronization is successful, the method further includes:
when uplink synchronization is successful, receiving a plurality of second uplink time offsets sent by the second electronic equipment, wherein the second uplink time offsets are determined by the second electronic equipment according to uplink data of the first electronic equipment;
obtaining a third uplink adjustment value by carrying out filtering processing according to the received time offset containing a plurality of second uplink time offsets;
and when the third uplink adjustment value reaches a preset second adjustment threshold, adjusting a timing frame header of the uplink data according to the third adjustment value to keep uplink synchronization.
Optionally, the obtaining a second uplink adjustment value according to the signal quality information of the downlink data includes:
determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device;
determining the second uplink adjustment value according to the first distance and the wireless signal transmission rate; or,
determining a second distance between the first electronic device and the second electronic device according to the positioning information;
determining the second uplink adjustment value according to the second distance and the wireless signal transmission rate; or,
determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device;
determining a second distance between the first electronic device and the second electronic device according to the positioning information;
and determining the second uplink adjustment value according to the first distance, the second distance and the wireless signal transmission rate.
According to a second aspect of the embodiments of the present disclosure, there is provided an uplink synchronization apparatus, applied to a first electronic device, the apparatus including:
a time offset obtaining module, configured to, in a state where uplink and downlink of the first electronic device are both synchronous, obtain, when a distance between the first electronic device and a second electronic device changes, a plurality of current first uplink time offsets sent by the second electronic device, where the second electronic device is an electronic device that communicates with the first electronic device, and the plurality of first uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device;
an adjustment value determining module, configured to perform filtering processing according to the received multiple first uplink time offsets to obtain a first uplink adjustment value;
and the synchronization maintaining module is used for adjusting a timing frame header of the uplink data according to the first adjustment value when the first uplink adjustment value reaches a preset first adjustment threshold so as to maintain uplink synchronization.
Optionally, the apparatus further comprises:
an adjustment value storage module, configured to store the first uplink adjustment value as a historical uplink adjustment value in the first electronic device;
and the synchronization adjusting module is used for adjusting a timing frame header of uplink data by using the historical uplink adjusting value when the first electronic device is out of synchronization in an uplink manner so as to obtain uplink synchronization again.
Optionally, the apparatus further comprises:
an adjustment value obtaining module, configured to obtain a second uplink adjustment value according to signal quality information of downlink data when uplink synchronization cannot be obtained again after a timing frame header of the uplink data is adjusted by using the historical uplink adjustment value;
the adjustment value processing module is used for carrying out filtering processing according to the second uplink adjustment value and the first uplink adjustment value to obtain a third uplink adjustment value;
and the synchronization adjusting module is further configured to adjust a timing frame header of the uplink data by using the third uplink adjustment value, so as to obtain uplink synchronization again.
Optionally, the apparatus further comprises:
and the fine adjustment module is used for adjusting the third uplink adjustment value within a preset adjustment value range according to a preset step length when the uplink synchronization fails, and adjusting the timing frame header of the uplink data by using the adjusted third uplink adjustment value after adjusting the third uplink adjustment value each time until the uplink synchronization is obtained again.
Optionally, the apparatus further comprises:
the time offset receiving module is configured to receive, when uplink synchronization is successful, a plurality of second uplink time offsets sent by the second electronic device, where the second uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device;
the adjustment value determining module is further configured to perform filtering processing according to the received multiple second uplink time offsets to obtain a third uplink adjustment value;
and the synchronization maintaining module is used for adjusting the timing frame header of the uplink data according to the third uplink adjustment value when the third uplink adjustment value reaches a preset second adjustment threshold so as to maintain uplink synchronization.
Optionally, the adjustment value obtaining module includes:
the distance determining submodule is used for determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the sending signal power of the second electronic device;
an adjustment value determining submodule, configured to determine the second uplink adjustment value according to the first distance and a wireless signal transmission rate; or,
the distance determining submodule is further used for determining a second distance between the first electronic device and the second electronic device according to the positioning information;
the adjustment value determining submodule is further configured to determine the second uplink adjustment value according to the second distance and the wireless signal transmission rate; or,
the distance determining submodule is further configured to determine a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device;
the distance determining submodule is further used for determining a second distance between the first electronic device and the second electronic device according to the positioning information;
and the adjustment value determining submodule is further configured to determine the second uplink adjustment value according to the first distance, the second distance and the wireless signal transmission rate.
In a third aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method of any one of the first aspect.
In a fourth aspect of the embodiments of the present disclosure, an electronic device is provided, including:
the computer-readable storage medium of the third aspect; and the number of the first and second groups,
one or more processors to execute the computer program in the computer-readable storage medium.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
acquiring a plurality of current first uplink time offsets sent by second electronic equipment when the distance between the first electronic equipment and the second electronic equipment changes in a state that the uplink and the downlink of the first electronic equipment are synchronous, wherein the plurality of first uplink time offsets are determined by the second electronic equipment according to uplink data of the first electronic equipment; obtaining a first uplink adjustment value by performing filtering processing according to the received plurality of first uplink time offsets; and when the first uplink adjusting value reaches a preset first adjusting threshold, adjusting a timing frame header of uplink data according to the first adjusting value to keep uplink synchronization. Therefore, the uplink synchronization processing can be realized under the condition of not accessing a special channel, and the uplink synchronization operation is simplified.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a flow chart illustrating an uplink synchronization method according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating another uplink synchronization method in accordance with an exemplary embodiment;
FIG. 3 is a flow chart illustrating yet another uplink synchronization method in accordance with an exemplary embodiment;
FIG. 4 is a flow chart illustrating yet another uplink synchronization method in accordance with an exemplary embodiment;
FIG. 5 is a flow chart illustrating yet another uplink synchronization method in accordance with an exemplary embodiment;
FIG. 6 is a block diagram illustrating an upstream synchronization apparatus in accordance with an exemplary embodiment;
FIG. 7 is a block diagram illustrating another upstream synchronization apparatus in accordance with an illustrative embodiment;
FIG. 8 is a block diagram illustrating yet another upstream synchronization apparatus in accordance with an exemplary embodiment;
FIG. 9 is a block diagram illustrating yet another upstream synchronization apparatus in accordance with an illustrative embodiment;
FIG. 10 is a block diagram illustrating yet another upstream synchronization apparatus in accordance with an illustrative embodiment;
FIG. 11 is a block diagram illustrating an adjustment value acquisition module in accordance with an exemplary embodiment;
FIG. 12 is a block diagram illustrating an electronic device in accordance with an example embodiment.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
Fig. 1 is a flowchart illustrating an uplink synchronization method according to an exemplary embodiment, which is applied to a first electronic device, and as shown in fig. 1, the method includes the following steps:
step 101, in a state that uplink and downlink of a first electronic device are both synchronous, when a distance between the first electronic device and a second electronic device changes, obtaining a plurality of current first uplink time offsets sent by the second electronic device.
Wherein, the second electronic equipment is the electronic equipment that communicates with first electronic equipment, and first electronic equipment or second electronic equipment can be any electronic equipment, and exemplarily, when this first electronic equipment is unmanned aerial vehicle, the second electronic equipment can be unmanned aerial vehicle's remote controller, and the remote controller controls unmanned aerial vehicle through wireless communication. The plurality of first uplink time offsets are determined by the second electronic device according to the uplink data of the first electronic device. Because the distance between the first electronic device and the second electronic device changes, the timing frame header offset of the uplink data and the downlink data can be caused, so that the second electronic device can correspondingly calculate the first uplink time offset according to the currently received uplink data sent by the first electronic device, and feed back the first uplink time offset to the first electronic device through the downlink channel, so that the first electronic device can perform subsequent operations. It should be noted that the second electronic device may correspondingly determine the plurality of first uplink time offsets according to the uplink data continuously sent by the first electronic device, so as to obtain a more accurate uplink time offset through subsequent filtering processing, and further accurately adjust the timing frame header of the uplink data.
Step 102, a first uplink adjustment value is obtained by performing filtering processing according to the received plurality of first uplink time offsets.
Illustratively, the filtering processing performed on the plurality of first uplink time offsets acquired in the previous step is to integrate the plurality of data and finally acquire a first uplink adjustment value, where a formula of the filtering processing is as follows:
wherein TA denotes a first uplink adjustment value, IRTiRepresents the ith first uplink time offset, n represents the number of the first uplink time offsets, and
after the first uplink adjustment value is determined according to the above formula, the operation of step 103 is continued.
And 103, when the first uplink adjustment value reaches a preset first adjustment threshold, adjusting a timing frame header of the uplink data according to the first adjustment value to keep uplink synchronization.
For example, the first adjustment threshold may be determined according to the current communication state, and is a threshold value used to determine whether the time offset is too large, so as to determine whether to adjust the timing frame header of the currently communicated uplink data, and may be used to prevent a problem that the measurement of the first uplink adjustment value is inaccurate, which may cause an improper adjustment of the timing frame header. When the first uplink adjustment value reaches the first adjustment threshold, it may be determined that the timing frame header at this time needs to be adjusted, that is, the first uplink adjustment value is added to the timing frame header of the uplink data, so as to adjust the sending time of the uplink data, and then the adjusted uplink data is sent again, it is determined whether the feedback of the second electronic device side can be received, and when the information feedback of the second electronic device side for the adjusted uplink data can be received, it is indicated that the uplink synchronization is still maintained at this time; otherwise, the first uplink adjustment value can not be used to keep uplink synchronization, and the first uplink adjustment value still needs to be adjusted. In addition, when the first uplink adjustment value does not reach the first adjustment threshold, it indicates that the communication state is still synchronous, and the adjustment operation of the timing frame header is not needed.
In summary, in the uplink synchronization method provided by the present disclosure, in a state where an uplink and a downlink of a first electronic device are both synchronized, when a distance between the first electronic device and a second electronic device changes, a plurality of current first uplink time offsets sent by the second electronic device are obtained, and then a first uplink adjustment value is obtained by performing filtering processing according to the plurality of received first uplink time offsets; and when the first uplink adjustment value reaches a preset first adjustment threshold, adjusting a timing frame header of the uplink data according to the first adjustment value to keep uplink synchronization. Therefore, the uplink synchronization processing can be realized under the condition of not accessing a special channel, and the uplink synchronization operation is simplified.
Exemplarily, fig. 2 is a flowchart illustrating another uplink synchronization method according to an exemplary embodiment, and as shown in fig. 2, the method further includes the following steps:
and 104, storing the first uplink adjustment value as a historical uplink adjustment value in the first electronic equipment.
That is, through the operations of steps 101 to 103, the uplink synchronization is maintained, and if the timing frame header is adjusted in the above steps, the first uplink adjustment value for adjustment is saved as a historical uplink adjustment value, so that the first electronic device can directly use the historical uplink adjustment value to perform adjustment before subsequent communication, thereby maintaining the uplink synchronization. It should be noted that, in the whole communication process, the distance between the first electronic device and the second electronic device may change at any time, and real-time detection is required, that is, the operations of steps 101 to 104 are repeated all the time, that is, the second electronic device may continuously monitor the uplink data sent by the first electronic device, and periodically feed back the first uplink time offset to the first electronic device, so as to determine whether the adjustment of the timing frame header is required in real time, and update the historical uplink adjustment value after each adjustment, thereby maintaining the uplink synchronization state.
And 105, when the first electronic device is out of synchronization in the uplink, adjusting a timing frame header of the uplink data by using the historical uplink adjustment value to obtain uplink synchronization again.
That is, when the above operation is used, the first uplink time offset is repeatedly obtained, and whether the timing frame header is adjusted is determined by comparing the first uplink adjustment value with the first adjustment threshold, so as to maintain the uplink synchronization state of the first electronic device. When the uplink synchronization cannot be maintained by using the first uplink adjustment value, that is, when uplink synchronization loss occurs, the following operations may be performed to reacquire uplink synchronization.
When the timing frame header of the uplink data adjusted by the historical uplink adjustment value can realize uplink synchronization, the uplink data after the timing frame header is adjusted is sent, whether feedback of the second electronic equipment side can be received or not is confirmed, and when information feedback of the second electronic equipment side aiming at the adjusted uplink data can be received, the uplink synchronization is realized, and the uplink synchronization process is completed. And if the uplink data after the timing frame header is adjusted by using the historical uplink adjustment value still cannot realize uplink synchronization, that is, the feedback information of the second electronic device side cannot be received, performing the operation of step 106.
And 106, when the uplink synchronization cannot be obtained again after the timing frame head of the uplink data is adjusted by the historical uplink adjustment value, acquiring a second uplink adjustment value according to the signal quality information of the downlink data.
For example, when the uplink synchronization cannot be obtained again by the historical uplink adjustment value, it is described that the historical uplink adjustment value needs to be updated according to the current communication situation, the distance between the current second electronic device and the first electronic device may be determined by combining the signal quality information of the downlink data, and then the current existing uplink time deviation is determined by using the wireless signal transmission rate, that is, the optical speed c, to adjust the historical uplink adjustment value. Wherein the signal quality information may include: the RSRP (Reference Signal Receiving Power, chinese), the SNR (Signal-to-Noise Ratio, chinese), and the RSSI (Received Signal Strength Indication, chinese) are not limited to these, but other parameters for representing the Signal quality information may be applied to the uplink synchronization method according to the present disclosure.
And 107, performing filtering processing according to the second uplink adjustment value and the first uplink adjustment value to obtain a third uplink adjustment value.
For example, similar to the operation of step 102, filtering and smoothing may be performed on the currently obtained second uplink adjustment value and the first uplink adjustment value stored as the historical data, so that a more accurate uplink adjustment value, that is, the third uplink adjustment value, can be obtained. The specific calculation formula of the third uplink adjustment value is as follows:
TA_adj＝TA*a+TA_new*(1-a)；
and TA _ adj represents a third uplink adjustment value, TA represents a first uplink adjustment value, TA _ new represents a second uplink adjustment value, and the value range of a is [0,1 ].
And step 108, adjusting the timing frame header of the uplink data by using the third uplink adjustment value so as to obtain uplink synchronization again.
That is to say, when a third uplink adjustment value is obtained in step 107, similarly to the operation in step 103, the third uplink adjustment value is added to the timing frame header of the uplink data to determine whether uplink synchronization can be obtained, and specific steps are not described here again. When the uplink synchronization can be realized according to the third uplink adjustment value, the uplink synchronization is successful, and the operation of step 110 may be continued; if the uplink synchronization still cannot be obtained according to the third uplink adjustment value, it indicates that the third uplink adjustment value still needs to be further adjusted, that is, the operation of the next step 109 is performed.
When the uplink synchronization fails, step 109 is executed, the third uplink adjustment value is adjusted within the preset adjustment value range according to the preset step length, and after the third uplink adjustment value is adjusted each time, the adjusted third uplink adjustment value is used to adjust the timing frame header of the uplink data until the uplink synchronization is obtained again.
Illustratively, the preset adjustment value range is [ TA _ adj-Thr, TA _ adj + Thr ], i.e., the range determined by the preset deviation value (Thr) is added or subtracted based on the third adjustment value (TA _ adj). For example, after the uplink synchronization fails, assuming that the preset step is step, the third uplink adjustment value (TA _ adj) may be adjusted to (TA _ adj + step), and the new third uplink adjustment value is used to adjust the timing frame header of the uplink data again to determine whether the uplink synchronization can be obtained; when the uplink synchronization still cannot be achieved, the third uplink adjustment value may be adjusted to (TA _ adj +2 × step) again, and then the adjustment operation of the timer frame header is repeated, and the operation of determining whether the uplink synchronization can be achieved is repeated. The adjustment of the third uplink adjustment value may be tried in sequence within the range of [ TA _ adj-Thr, TA _ adj + Thr ] until uplink synchronization can be achieved or all the adjustment values within the adjustment value range are failed to be tried. If all the attempts of the adjustment values within the adjustment value range fail, it is described that the fine adjustment performed by the third uplink adjustment value cannot achieve uplink synchronization of the current communication.
It should be noted that the preset step size and the preset deviation value are empirical values determined according to theoretical speculation and multiple actual debugs.
Illustratively, after the uplink synchronization is implemented, the method may further include the following steps:
when the uplink synchronization is successful, step 110 is executed to receive a plurality of second uplink time offsets sent by the second electronic device.
And the second uplink time offset is determined by the second electronic equipment according to the uplink data of the first electronic equipment.
And step 111, obtaining a third uplink adjustment value by performing filtering processing according to the received time offset including a plurality of second uplink time offsets.
And 112, when the third uplink adjustment value reaches a preset second adjustment threshold, adjusting a timing frame header of the uplink data according to the third adjustment value to keep uplink synchronization.
That is, after the uplink synchronization is successful, the first electronic device continues to perform operations similar to steps 101 to 103, so as to maintain the downlink synchronization of the current communication state. When the third uplink adjustment value determined according to the plurality of second uplink time offsets reaches the preset second adjustment threshold, it indicates that the timing frame header of the currently communicated uplink data needs to be adjusted at this time to maintain the current uplink synchronization state, that is, the operations of step 101 to step 104 are repeated. The second adjustment threshold is also used for judging whether the time offset is too large, so as to judge whether the timing frame header of the currently communicated uplink data needs to be adjusted, and can be used for preventing the problem that the measurement of the third uplink adjustment value is inaccurate, so that the timing frame header is improperly adjusted.
It should be noted that the second adjustment threshold may be the same as or different from the first adjustment threshold, and the disclosure is not limited thereto.
Illustratively, fig. 3 is a flowchart illustrating a further uplink synchronization method according to an exemplary embodiment, where as shown in fig. 3, when the uplink synchronization cannot be obtained again after the timing frame header of the uplink data is adjusted by using the historical uplink adjustment value in step 106, acquiring a second uplink adjustment value according to the signal quality information of the downlink data includes the following steps:
step 1061, determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device.
Step 1062, determining a second uplink adjustment value according to the first distance and the wireless signal transmission rate.
By way of example, the current signal quality information may include: the received signal power, the signal-to-noise ratio, and the received signal strength indication are referred to, so that the first distance may be obtained according to parameters such as RSRP, SNR, and RSSI, and then the quotient of the first distance and the wireless signal transmission rate is determined as the second uplink adjustment value.
Alternatively, the determination of the second uplink adjustment value may further be performed by the following steps, as shown in fig. 4:
step 1063, determining a second distance between the first electronic device and the second electronic device according to the positioning information.
Step 1064, determining a second uplink adjustment value according to the second distance and the wireless signal transmission rate.
For example, the signal quality information may include a GPS signal, a second distance between the first electronic device and the second electronic device is obtained by the GPS, and a quotient of the second distance and the wireless signal transmission rate is determined as a second uplink adjustment value.
Alternatively, the determination of the second uplink adjustment value may also combine the two methods, as shown in fig. 5:
step 1065, determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device.
Step 1066, determining a second distance between the first electronic device and the second electronic device according to the positioning information.
Step 1067, determining a second uplink adjustment according to the first distance, the second distance and the wireless signal transmission rate.
For example, after the filtering process is performed on the first distance and the second distance obtained in step 1061 and step 1063, an estimated distance between the first electronic device and the second electronic device is determined, and then the second uplink time is determined according to the transmission rate. Wherein, the formula for determining the estimated distance according to the first distance and the second distance is as follows:
L＝L_s*a+L_g*(1-a)；
wherein, L represents the estimated distance, L _ s represents the first distance, L _ g represents the second distance, and the value range of a is [0,1 ].
In summary, in the uplink synchronization method provided by the present disclosure, in a state where an uplink and a downlink of a first electronic device are both synchronized, when a distance between the first electronic device and a second electronic device changes, a plurality of current first uplink time offsets sent by the second electronic device are obtained, and then a first uplink adjustment value is obtained by performing filtering processing according to the plurality of received first uplink time offsets; and when the first uplink adjustment value reaches a preset first adjustment threshold, adjusting a timing frame header of the uplink data according to the first adjustment value to keep uplink synchronization. Therefore, the uplink synchronization processing can be realized under the condition of not accessing a special channel, and the uplink synchronization operation is simplified.
Fig. 6 is a block diagram illustrating an uplink synchronization apparatus according to an exemplary embodiment, where the uplink synchronization apparatus shown in fig. 6 is applied to a first electronic device, and the apparatus 600 includes:
the time offset obtaining module 610 is configured to, in a state where uplink and downlink of the first electronic device are both synchronous, obtain, when a distance between the first electronic device and a second electronic device changes, a plurality of current first uplink time offsets sent by the second electronic device, where the second electronic device is an electronic device that communicates with the first electronic device, and the plurality of first uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device.
An adjustment value determining module 620, configured to obtain a first uplink adjustment value by performing filtering processing according to the received multiple first uplink time offsets.
A synchronization maintaining module 630, configured to adjust a timing frame header of the uplink data according to the first adjustment value when the first uplink adjustment value reaches a preset first adjustment threshold, so as to maintain uplink synchronization.
Fig. 7 is a block diagram illustrating another uplink synchronization apparatus according to an exemplary embodiment, where as shown in fig. 7, the apparatus 600 further includes:
an adjustment value saving module 640, configured to save the first uplink adjustment value as a historical uplink adjustment value in the first electronic device.
The synchronization adjusting module 650 is configured to, when the first electronic device is out of synchronization in the uplink, adjust a timing frame header of the uplink data by using the historical uplink adjustment value, so as to obtain uplink synchronization again.
Fig. 8 is a block diagram illustrating another uplink synchronization apparatus according to an exemplary embodiment, where as shown in fig. 8, the apparatus 600 further includes:
the adjustment value obtaining module 660 is configured to obtain a second uplink adjustment value according to the signal quality information of the downlink data when the uplink synchronization cannot be obtained again after the timing frame header of the uplink data is adjusted by using the historical uplink adjustment value.
And an adjustment value processing module 670, configured to perform filtering processing according to the second uplink adjustment value and the first uplink adjustment value to obtain a third uplink adjustment value.
The synchronization adjusting module 650 is further configured to adjust a timing frame header of the uplink data by using the third uplink adjustment value, so as to regain uplink synchronization.
Fig. 9 is a block diagram illustrating another uplink synchronization apparatus according to an exemplary embodiment, where as shown in fig. 9, the apparatus 600 further includes:
the fine tuning module 680 is configured to, when the uplink synchronization fails, adjust a third uplink adjustment value within a preset adjustment value range according to a preset step length, and after the third uplink adjustment value is adjusted each time, adjust a timing frame header of the uplink data by using the adjusted third uplink adjustment value until the uplink synchronization is obtained again.
Fig. 10 is a block diagram illustrating another uplink synchronization apparatus according to an exemplary embodiment, where as shown in fig. 10, the apparatus 600 further includes:
the time offset receiving module 690 is configured to receive, when uplink synchronization is successful, a plurality of second uplink time offsets sent by the second electronic device, where the second uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device.
The adjustment value determining module 620 is further configured to obtain a third uplink adjustment value by performing filtering processing according to the received uplink time offset that includes a plurality of second uplink time offsets.
A synchronization maintaining module 630, configured to adjust a timing frame header of the uplink data according to the third uplink adjustment value when the third uplink adjustment value reaches the preset second adjustment threshold, so as to maintain uplink synchronization.
Fig. 11 is a block diagram illustrating an adjustment value acquisition module according to an exemplary embodiment, and as shown in fig. 11, the adjustment value acquisition module 660 includes:
the distance determining submodule 661 is configured to determine a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device.
And an adjustment value determining submodule 662, configured to determine a second uplink adjustment value according to the first distance and the wireless signal transmission rate. Or,
the distance determining submodule 661 is further configured to determine a second distance between the first electronic device and the second electronic device according to the positioning information.
The adjustment value determining submodule 662 is further configured to determine a second uplink adjustment value according to the second distance and the wireless signal transmission rate. Or,
the distance determining sub-module 661 is further configured to determine a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device.
The distance determining submodule 661 is further configured to determine a second distance between the first electronic device and the second electronic device according to the positioning information.
The adjustment value determining submodule 662 is further configured to determine a second uplink adjustment value according to the first distance, the second distance, and the wireless signal transmission rate.
In summary, in the uplink synchronization apparatus provided in the present disclosure, in a state where an uplink and a downlink of a first electronic device are both synchronized, when a distance between the first electronic device and a second electronic device changes, a plurality of current first uplink time offsets sent by the second electronic device are obtained, and then a first uplink adjustment value is obtained by performing filtering processing according to the plurality of received first uplink time offsets; and when the first uplink adjustment value reaches a preset first adjustment threshold, adjusting a timing frame header of the uplink data according to the first adjustment value to keep uplink synchronization. Therefore, the uplink synchronization processing can be realized under the condition of not accessing a special channel, and the uplink synchronization operation is simplified.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 12 is a block diagram illustrating an electronic device 1200 in accordance with an example embodiment. As shown in fig. 12, the electronic device 1200 may include: a processor 1201, a memory 1202, a multimedia component 1203, an input/output (I/O) interface 1204, and a communications component 1205.
The processor 1201 is configured to control the overall operation of the electronic device 1200, so as to complete all or part of the steps in the uplink synchronization method. The memory 1202 is used to store various types of data to support operation of the electronic device 1200, such as instructions for any application or method operating on the electronic device 1200 and application-related data. The Memory 1202 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 1203 may include screen and audio components. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signals may further be stored in the memory 1202 or transmitted via the communication component 1205. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 1204 provides an interface between the processor 1201 and other interface modules, such as a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. A communication component 1205 is used for wired or wireless communication between the electronic device 1200 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, or 4G, or a combination of one or more of them, so that the corresponding Communication component 1205 can include: Wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the electronic Device 1200 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the above uplink synchronization method.
In another exemplary embodiment, a computer readable storage medium comprising program instructions, such as the memory 1202 comprising program instructions, executable by the processor 1201 of the electronic device 1200 to perform the uplink synchronization method described above is also provided.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (14)
1. An uplink synchronization method applied to a first electronic device, the method comprising:
under the state that the uplink and the downlink of the first electronic device are synchronous, when the distance between the first electronic device and the second electronic device changes, acquiring a plurality of current first uplink time offsets sent by the second electronic device, wherein the second electronic device is an electronic device which communicates with the first electronic device, and the plurality of first uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device;
obtaining a first uplink adjustment value by performing filtering processing according to the received plurality of first uplink time offsets;
and when the first uplink adjusting value reaches a preset first adjusting threshold, adjusting a timing frame header of uplink data according to the first adjusting value to keep uplink synchronization.
2. The method of claim 1, further comprising:
saving the first uplink adjustment value as a historical uplink adjustment value in the first electronic device;
and when the first electronic equipment is out of synchronization in the uplink, adjusting a timing frame header of uplink data by using the historical uplink adjustment value so as to obtain uplink synchronization again.
3. The method of claim 2, further comprising:
when the uplink synchronization can not be obtained again after the timing frame header of the uplink data is adjusted by using the historical uplink adjustment value, a second uplink adjustment value is obtained according to the signal quality information of the downlink data;
filtering according to the second uplink adjustment value and the first uplink adjustment value to obtain a third uplink adjustment value;
and adjusting the timing frame header of the uplink data by using the third uplink adjustment value so as to obtain uplink synchronization again.
4. The method of claim 3, further comprising:
and when the uplink synchronization fails, adjusting the third uplink adjustment value within a preset adjustment value range according to a preset step length, and after adjusting the third uplink adjustment value each time, adjusting the timing frame header of the uplink data by using the adjusted third uplink adjustment value until the uplink synchronization is obtained again.
5. The method according to claim 3 or 4, characterized in that the method further comprises:
when uplink synchronization is successful, receiving a plurality of second uplink time offsets sent by the second electronic equipment, wherein the second uplink time offsets are determined by the second electronic equipment according to uplink data of the first electronic equipment;
obtaining a third uplink adjustment value by carrying out filtering processing according to the received time offset containing a plurality of second uplink time offsets;
and when the third uplink adjustment value reaches a preset second adjustment threshold, adjusting a timing frame header of the uplink data according to the third adjustment value to keep uplink synchronization.
6. The method of claim 3, wherein the obtaining the second uplink adjustment value according to the signal quality information of the downlink data comprises:
determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device;
determining the second uplink adjustment value according to the first distance and the wireless signal transmission rate; or,
determining a second distance between the first electronic device and the second electronic device according to the positioning information;
determining the second uplink adjustment value according to the second distance and the wireless signal transmission rate; or,
determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device;
determining a second distance between the first electronic device and the second electronic device according to the positioning information;
and determining the second uplink adjustment according to the first distance, the second distance and the wireless signal transmission rate.
7. An uplink synchronization apparatus applied to a first electronic device, the apparatus comprising:
a time offset obtaining module, configured to, in a state where uplink and downlink of the first electronic device are both synchronous, obtain, when a distance between the first electronic device and a second electronic device changes, a plurality of current first uplink time offsets sent by the second electronic device, where the second electronic device is an electronic device that communicates with the first electronic device, and the plurality of first uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device;
an adjustment value determining module, configured to perform filtering processing according to the received multiple first uplink time offsets to obtain a first uplink adjustment value;
and the synchronization maintaining module is used for adjusting a timing frame header of the uplink data according to the first adjustment value when the first uplink adjustment value reaches a preset first adjustment threshold so as to maintain uplink synchronization.
8. The apparatus of claim 7, further comprising:
an adjustment value storage module, configured to store the first uplink adjustment value as a historical uplink adjustment value in the first electronic device;
and the synchronization adjusting module is used for adjusting a timing frame header of uplink data by using the historical uplink adjusting value when the first electronic device is out of synchronization in an uplink manner so as to obtain uplink synchronization again.
9. The apparatus of claim 8, further comprising:
an adjustment value obtaining module, configured to obtain a second uplink adjustment value according to signal quality information of downlink data when uplink synchronization cannot be obtained again after a timing frame header of the uplink data is adjusted by using the historical uplink adjustment value;
the adjustment value processing module is used for carrying out filtering processing according to the second uplink adjustment value and the first uplink adjustment value to obtain a third uplink adjustment value;
and the synchronization adjusting module is further configured to adjust a timing frame header of the uplink data by using the third uplink adjustment value, so as to obtain uplink synchronization again.
10. The apparatus of claim 9, further comprising:
and the fine adjustment module is used for adjusting the third uplink adjustment value within a preset adjustment value range according to a preset step length when the uplink synchronization fails, and adjusting the timing frame header of the uplink data by using the adjusted third uplink adjustment value after adjusting the third uplink adjustment value each time until the uplink synchronization is obtained again.
11. The apparatus of claim 9 or 10, further comprising:
the time offset receiving module is configured to receive, when uplink synchronization is successful, a plurality of second uplink time offsets sent by the second electronic device, where the second uplink time offsets are determined by the second electronic device according to uplink data of the first electronic device;
the adjustment value determining module is further configured to perform filtering processing according to the received multiple second uplink time offsets to obtain a third uplink adjustment value;
and the synchronization maintaining module is used for adjusting the timing frame header of the uplink data according to the third uplink adjustment value when the third uplink adjustment value reaches a preset second adjustment threshold so as to maintain uplink synchronization.
12. The apparatus of claim 9, wherein the adjustment value obtaining module comprises:
the distance determining submodule is used for determining a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the sending signal power of the second electronic device;
an adjustment value determining submodule, configured to determine the second uplink adjustment value according to the first distance and a wireless signal transmission rate; or,
the distance determining submodule is further used for determining a second distance between the first electronic device and the second electronic device according to the positioning information;
the adjustment value determining submodule is further configured to determine the second uplink adjustment value according to the second distance and the wireless signal transmission rate; or,
the distance determining submodule is further configured to determine a first distance between the first electronic device and the second electronic device according to the signal quality of the downlink data and the transmission signal power of the second electronic device;
the distance determining submodule is further used for determining a second distance between the first electronic device and the second electronic device according to the positioning information;
and the adjustment value determining submodule is further configured to determine the second uplink adjustment value according to the first distance, the second distance and the wireless signal transmission rate.
13. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
14. An electronic device, comprising:
the computer-readable storage medium recited in claim 13; and the number of the first and second groups,
one or more processors to execute the computer program in the computer-readable storage medium.
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