CN108834211B - Timing adjustment method and system based on 5G communication network - Google Patents
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Abstract
The invention relates to a timing adjustment method and a system based on a 5G communication network, wherein the timing adjustment method comprises the following steps: confirming that the user terminal needing to correct the transmission time is a user terminal to be processed; obtaining the channel quality of the transmitted uplink signal through the Doppler frequency shift and the signal-to-noise ratio; respectively calculating the timing advance of the corresponding user terminal to be processed according to the channel quality and the arrival time; and the user terminal to be processed realizes uplink synchronization through the corresponding timing advance. The embodiment of the invention determines the user terminal needing to correct the transmission time by receiving the arrival time of the uplink signal sent by each user terminal, respectively calculates the timing advance of each user terminal according to the channel quality and the channel arrival time of each user terminal, and each user terminal needing to correct the transmission time sends the uplink signal according to the timing advance, thereby realizing the uplink synchronization of each user terminal.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a timing adjustment method and a timing adjustment system based on a 5G communication network.
Background
In wireless communication systems, timing adjustment is critical. An important characteristic of uplink transmission is that different clients are accessed in time-frequency orthogonal multiple access, i.e. uplink transmissions from different clients in the same cell do not interfere with each other. In order to ensure the orthogonality of uplink transmission and avoid intra-cell interference, the receiving end requires that the arrival times of signals of different clients from the same subframe but different frequency domain resources at the receiving end are substantially aligned. The receiving end can correctly decode the uplink data as long as receiving the uplink data sent by the client within the cyclic prefix range, so that the uplink synchronization requires that the time of arrival of signals from different clients of the same subframe at the receiving end falls within the cyclic prefix. In order to ensure time synchronization on the receiving side, LTE proposes a timing advance mechanism for uplink timing advance. The timing advance is related to the cell radius. In the case of a large delay, the demodulation performance of the receiving end is very poor, which results in loss of information or increases redundancy of information.
Disclosure of Invention
In order to solve the problems in the prior art, at least one embodiment of the present invention provides a timing adjustment method based on a 5G communication network, including:
receiving uplink signals sent by each user terminal, calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal through the uplink signals, and recording the arrival time of the uplink signals sent by each user terminal;
confirming that the user terminal needing transmission time correction is the user terminal to be processed according to the arrival time of all uplink signals sent by the user terminal;
obtaining the channel quality of the uplink signal through the Doppler frequency shift and the signal-to-noise ratio;
respectively calculating timing advance corresponding to the user terminal to be processed according to the channel quality and the arrival time of the user terminal to be processed;
and the user terminal to be processed sends subsequent uplink signals in advance or in a delayed manner through the corresponding timing advance, so that uplink synchronization is realized.
Based on the above technical solutions, the embodiments of the present invention may be further improved as follows.
Optionally, the calculating, according to the channel quality and the arrival time of the user terminal to be processed, timing advance corresponding to the user terminal to be processed respectively includes:
confirming the transmission delay of the uplink signal according to the channel quality of the uplink signal;
and calculating the timing advance of the user terminal to be processed according to the transmission delay and the arrival time.
Optionally, the calculating the doppler shift and the signal-to-noise ratio of the user terminal specifically includes:
and calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal by adopting a channel estimation algorithm.
Optionally, before the receiving end receives the uplink signal sent by each user terminal, the method further includes:
the user terminal divides the wireless data to be transmitted into multi-frame uplink signals.
Optionally, the determining, by the arrival time of the uplink signal sent by all the user terminals, that the user terminal whose transmission time needs to be corrected is the user terminal to be processed specifically includes:
counting the arrival time of all uplink signals sent by the user terminal, and obtaining the arrival time with the maximum arrival time as a standard arrival time;
and taking the user terminal with the arrival time not being the standard arrival time as the user terminal to be processed.
The embodiment of the invention also provides a timing adjustment system based on the 5G communication network, which comprises the following components: a user terminal and a receiving terminal; the receiving end includes: the system comprises a communication subsystem, a computing subsystem, a storage subsystem and a processing subsystem;
the communication subsystem is used for receiving uplink signals sent by each user terminal;
the calculation subsystem is used for calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal through the uplink signal and recording the arrival time of the uplink signal sent by each user terminal;
the processing subsystem is used for confirming that the user terminal needing transmission time correction is the user terminal to be processed according to the arrival time of the uplink signals sent by all the user terminals;
the processing subsystem is further configured to obtain, through the doppler shift and the signal-to-noise ratio, a channel quality for transmitting the uplink signal;
the computing subsystem is further configured to compute timing advances corresponding to the to-be-processed user terminals respectively according to the channel quality and the arrival time of the to-be-processed user terminals;
and the user terminal to be processed is used for sending a subsequent uplink signal in advance or in delay by the corresponding timing advance to realize uplink synchronization.
Optionally, the computing subsystem is specifically configured to determine the transmission delay of the uplink signal according to the channel quality of the user terminal to be processed; and calculating the timing advance of the user terminal to be processed according to the transmission delay and the arrival time.
Optionally, the computing subsystem is specifically configured to compute the doppler shift and the signal-to-noise ratio of the user terminal by using a channel estimation algorithm.
Optionally, the user terminal includes: and the division subsystem is used for dividing the wireless data to be transmitted into multi-frame uplink signals.
Optionally, the processing subsystem is specifically configured to count arrival times of uplink signals sent by all the user terminals, and obtain an arrival time with the largest arrival time as a standard arrival time; and taking the user terminal with the arrival time not being the standard arrival time as the user terminal to be processed.
Compared with the prior art, the technical scheme of the invention has the following advantages: the embodiment of the invention determines the user terminal needing to correct the transmission time by receiving the arrival time of the uplink signal sent by each user terminal, respectively calculates the timing advance of each user terminal according to the channel quality and the channel arrival time of each user terminal, and each user terminal needing to correct the transmission time sends the uplink signal according to the timing advance, thereby realizing the uplink synchronization of each user terminal.
Drawings
Fig. 1 is a schematic flowchart of a timing adjustment method based on a 5G communication network according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a timing adjustment method based on a 5G communication network according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a timing adjustment method based on a 5G communication network according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a timing adjustment system based on a 5G communication network according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, a timing adjustment method based on a 5G communication network provided in an embodiment of the present invention includes:
and S11, receiving the uplink signals sent by each user terminal, calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal through the uplink signals, and recording the arrival time of the uplink signals sent by each user terminal.
Specifically, in this embodiment, the uplink signal sent by each user terminal is processed by a channel estimation algorithm to obtain the doppler shift and the signal-to-noise ratio of each user terminal, and the arrival time of the uplink signal is obtained, for example, the doppler shift and the signal-to-noise ratio of the user terminal are calculated by using the channel estimation algorithm. Before this step, the user terminal divides the wireless data to be transmitted into multi-frame uplink signals, and transmits the multi-frame uplink signals according to different transmission block sizes.
And S12, confirming the user terminal needing to correct the transmission time as the user terminal to be processed through the arrival time of the uplink signals sent by all the user terminals.
Specifically, in this embodiment, the ue with a large error in the arrival time of the uplink signal is determined according to the arrival time of the uplink signal sent by each ue, and the uplink signal sent by the ue may cause the receiving end to lose part of information or increase redundancy of information, so that the time for sending the uplink signal by the ue is corrected to ensure uplink synchronization.
And S13, obtaining the channel quality of the transmission uplink signal through the Doppler frequency shift and the signal-to-noise ratio.
Specifically, in this embodiment, the motion state and the corresponding channel condition of the ue transmitting the uplink signal are determined by the doppler shift and the snr, and the channel quality of the ue is comprehensively evaluated, where the timing advance of the ue is relatively large when the channel quality is poor and the ue is relatively far from the receiving end, and the timing advance of the ue is relatively small when the channel quality is good and the ue is relatively close to the receiving end, and the base station sends different timing advances to the ues at different distances to ensure that the uplink signals of the ues reach the receiving end at the same time.
And S14, respectively calculating the timing advance corresponding to the user terminal to be processed according to the channel quality and the arrival time of the user terminal to be processed.
Specifically, in this embodiment, the timing advance of the to-be-processed user terminal under different conditions is obtained through the channel quality and the arrival time of the to-be-processed user terminal determined in the above steps, so as to ensure that the uplink signal of each to-be-processed user terminal can be consistent with the arrival time of the uplink signal of other user terminals.
And S15, the user terminal to be processed sends the subsequent uplink signal by advancing or delaying the corresponding timing advance, thereby realizing the uplink synchronization.
Specifically, in this embodiment, each ue to be processed respectively adjusts the sending time of the original uplink signal according to the received timing advance, so that uplink signals of different clients in the same subframe but different frequency domain resources can reach the receiving end at the same time, thereby implementing uplink synchronization and ensuring data integrity when demodulating related information.
In the above embodiment, whether the corresponding user terminal needs to correct the transmission time is determined according to the arrival time of the uplink signal received by the receiving end, the user terminal that needs to correct the transmission time is used as the user terminal to be processed, the moving state and the channel condition of each user terminal to be processed are determined according to the doppler shift and the signal-to-noise ratio of each user terminal to be processed, and thus the channel quality of each user terminal to be processed is obtained.
As shown in fig. 2, an embodiment of the present invention further provides a timing adjustment method based on a 5G communication network, including:
and S21, receiving the uplink signals sent by each user terminal, calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal through the uplink signals, and recording the arrival time of the uplink signals sent by each user terminal.
Specifically, in this embodiment, the uplink signal sent by each user terminal is processed through a channel estimation algorithm to obtain the doppler shift and the signal-to-noise ratio of each user terminal, and the arrival time of the uplink signal is obtained.
And S22, confirming the user terminal needing to correct the transmission time as the user terminal to be processed through the arrival time of the uplink signals sent by all the user terminals.
Specifically, in this embodiment, the ue with a large error in the arrival time of the uplink signal is determined according to the arrival time of the uplink signal sent by each ue, and the uplink signal sent by the ue may cause the receiving end to lose part of information or increase redundancy of information, so that the time for sending the uplink signal by the ue is corrected to ensure uplink synchronization.
And S23, obtaining the channel quality of the transmission uplink signal through the Doppler frequency shift and the signal-to-noise ratio.
Specifically, in this embodiment, the motion state and the corresponding channel condition of the ue transmitting the uplink signal are determined by the doppler shift and the snr, and the channel quality of the ue is comprehensively evaluated, where the timing advance of the ue is relatively large when the channel quality is poor and the ue is relatively far from the receiving end, and the timing advance of the ue is relatively small when the channel quality is good and the ue is relatively close to the receiving end, and the base station sends different timing advances to the ues at different distances to ensure that the uplink signals of the ues reach the receiving end at the same time.
And S24, confirming the transmission delay of the uplink signal through the channel quality of the user terminal to be processed.
Specifically, the transmission delay for transmitting the uplink signal, that is, the time for the uplink signal to reach the receiving end from the user terminal, is calculated according to the channel quality of the user terminal to be processed.
And S25, calculating the timing advance of the user terminal to be processed through the transmission delay and the arrival time.
Specifically, whether the user terminal to be processed needs to send the uplink signal in advance or delay to send the uplink signal, that is, the timing advance of the user terminal to be processed, can be obtained correspondingly through the transmission delay and the arrival time of the uplink channel.
And S26, the user terminal to be processed sends the subsequent uplink signal by advancing or delaying the corresponding timing advance, thereby realizing the uplink synchronization.
Specifically, in this embodiment, each ue to be processed respectively adjusts the sending time of the original uplink signal according to the received timing advance, so that uplink signals of different clients in the same subframe but different frequency domain resources can reach the receiving end at the same time, thereby implementing uplink synchronization and ensuring data integrity when demodulating related information.
In the above embodiment, the transmission delay of the uplink signal is determined according to the channel quality of the user terminal to be processed, and the timing advance of the user terminal to be processed is calculated according to the transmission delay and the arrival time of the uplink signal, so that when the user terminal to be processed transmits the uplink signal next time, the transmission time is delayed or advanced according to the timing advance.
As shown in fig. 3, an embodiment of the present invention further provides a timing adjustment method based on a 5G communication network, including:
and S31, receiving the uplink signals sent by each user terminal, calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal through the uplink signals, and recording the arrival time of the uplink signals sent by each user terminal.
Specifically, in this embodiment, the uplink signal sent by each user terminal is processed through a channel estimation algorithm to obtain the doppler shift and the signal-to-noise ratio of each user terminal, and the arrival time of the uplink signal is obtained.
And S32, counting the arrival time of the uplink signals sent by all the user terminals, and obtaining the arrival time with the largest arrival time as the standard arrival time.
And S33, taking the user terminal with the arrival time not being the standard arrival time as the user terminal to be processed.
Specifically, in order to reduce subsequent processing amount, the arrival time with the largest arrival time is used as the standard arrival time, so as to reduce the amount of the user terminals needing to correct the sending time and improve the data processing speed.
And S34, obtaining the channel quality of the transmission uplink signal through the Doppler frequency shift and the signal-to-noise ratio.
Specifically, in this embodiment, the motion state and the corresponding channel condition of the ue transmitting the uplink signal are determined by the doppler shift and the snr, and the channel quality of the ue is comprehensively evaluated, where the timing advance of the ue is relatively large when the channel quality is poor and the ue is relatively far from the receiving end, and the timing advance of the ue is relatively small when the channel quality is good and the ue is relatively close to the receiving end, and the base station sends different timing advances to the ues at different distances to ensure that the uplink signals of the ues reach the receiving end at the same time.
And S35, respectively calculating the timing advance corresponding to the user terminal to be processed according to the channel quality and the arrival time of the user terminal to be processed.
Specifically, in this embodiment, the timing advance of the to-be-processed user terminal under different conditions is obtained through the channel quality and the arrival time of the to-be-processed user terminal determined in the above steps, so as to ensure that the uplink signal of each to-be-processed user terminal can be consistent with the arrival time of the uplink signal of other user terminals.
And S36, the user terminal to be processed sends the subsequent uplink signal by advancing or delaying the corresponding timing advance, thereby realizing the uplink synchronization.
Specifically, in this embodiment, each ue to be processed respectively adjusts the sending time of the original uplink signal according to the received timing advance, so that uplink signals of different clients in the same subframe but different frequency domain resources can reach the receiving end at the same time, thereby implementing uplink synchronization and ensuring data integrity when demodulating related information.
In the above embodiment, the arrival time of all the user terminals is counted to obtain the arrival time with the largest same arrival time as the standard arrival time, or the arrival time within a certain time point is the largest, and the time point is taken as the standard arrival time, so that the arrival times of the uplink data sent by most user terminals meet the uplink synchronization, thereby reducing the number of the user terminals needing to correct the sending time and reducing the subsequent processing amount.
As shown in fig. 4, an embodiment of the present invention further provides a timing adjustment system based on a 5G communication network, including: a user terminal and a receiving terminal; the receiving end includes: the system comprises a communication subsystem, a computing subsystem, a storage subsystem and a processing subsystem; the user terminal includes: and (6) partitioning the subsystem.
And the division subsystem is used for dividing the wireless data to be transmitted into multi-frame uplink signals.
In this embodiment, the communication subsystem is configured to receive an uplink signal sent by each ue.
In this embodiment, the calculation subsystem is configured to calculate a doppler shift and a signal-to-noise ratio of the user terminal through the uplink signal, and record an arrival time of the uplink signal sent by each user terminal, specifically, calculate the doppler shift and the signal-to-noise ratio of the user terminal by using a channel estimation algorithm.
In this embodiment, the processing subsystem is configured to determine, through arrival times of uplink signals sent by all user terminals, that a user terminal whose transmission time needs to be corrected is a user terminal to be processed, count arrival times of the uplink signals sent by all user terminals, and obtain an arrival time with the largest arrival time as a standard arrival time; and taking the user terminal with the arrival time not being the standard arrival time as the user terminal to be processed.
In this embodiment, the processing subsystem is further configured to obtain the channel quality of the uplink signal through the doppler shift and the signal-to-noise ratio.
In this embodiment, the calculating subsystem is further configured to calculate timing advance corresponding to the user terminal to be processed respectively according to the channel quality and the arrival time of the user terminal to be processed, and specifically, determine the transmission delay of the uplink signal according to the channel quality of the user terminal to be processed; and calculating the timing advance of the user terminal transmitting the uplink signal through the transmission delay and the arrival time.
In this embodiment, the user terminal to be processed is configured to send a subsequent uplink signal in advance or in delay by using a corresponding timing advance, so as to implement uplink synchronization.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A timing adjustment method based on a 5G communication network is characterized by comprising the following steps:
receiving uplink signals sent by each user terminal, calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal through the uplink signals, and recording the arrival time of the uplink signals sent by each user terminal;
confirming that the user terminal needing transmission time correction is the user terminal to be processed according to the arrival time of all uplink signals sent by the user terminal;
obtaining the channel quality of the uplink signal through the Doppler frequency shift and the signal-to-noise ratio;
respectively calculating timing advance corresponding to the user terminal to be processed according to the channel quality and the arrival time of the user terminal to be processed;
the user terminal to be processed sends a subsequent uplink signal in advance or in a delayed manner through the corresponding timing advance to realize uplink synchronization;
the determining, by the arrival times of the uplink signals sent by all the user terminals, that the user terminal whose transmission time needs to be corrected is a user terminal to be processed specifically includes:
counting the arrival time of all uplink signals sent by the user terminal, and obtaining the arrival time with the maximum arrival time as a standard arrival time;
and taking the user terminal with the arrival time not being the standard arrival time as the user terminal to be processed.
2. The method according to claim 1, wherein the step of calculating the timing advance corresponding to the ue to be processed according to the channel quality and the arrival time of the ue to be processed comprises:
confirming the transmission delay of the uplink signal according to the channel quality of the user terminal to be processed;
and calculating the timing advance of the user terminal to be processed according to the transmission delay and the arrival time.
3. The timing adjustment method according to claim 1, wherein the calculating the doppler shift and the signal-to-noise ratio of the ue specifically comprises:
and calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal by adopting a channel estimation algorithm.
4. The timing adjustment method according to claim 1, wherein before the receiving end receives the uplink signal transmitted by each ue, the method further comprises:
the user terminal divides the wireless data to be transmitted into multi-frame uplink signals.
5. A timing adjustment system based on a 5G communication network, comprising: a user terminal and a receiving terminal; characterized in that, the receiving end includes: the system comprises a communication subsystem, a computing subsystem, a storage subsystem and a processing subsystem;
the communication subsystem is used for receiving uplink signals sent by each user terminal;
the calculation subsystem is used for calculating the Doppler frequency shift and the signal-to-noise ratio of the user terminal through the uplink signal and recording the arrival time of the uplink signal sent by each user terminal;
the processing subsystem is used for confirming that the user terminal needing transmission time correction is the user terminal to be processed according to the arrival time of the uplink signals sent by all the user terminals;
the processing subsystem is further configured to obtain, through the doppler shift and the signal-to-noise ratio, a channel quality for transmitting the uplink signal;
the computing subsystem is further configured to compute timing advances corresponding to the to-be-processed user terminals respectively according to the channel quality and the arrival time of the to-be-processed user terminals;
the user terminal to be processed is used for sending a subsequent uplink signal in advance or in delay by the corresponding timing advance to realize uplink synchronization;
the processing subsystem is specifically configured to count arrival times of uplink signals sent by all the user terminals, and obtain an arrival time with the largest arrival time as a standard arrival time; and taking the user terminal with the arrival time not being the standard arrival time as the user terminal to be processed.
6. The timing adjustment system according to claim 5, wherein the computing subsystem is specifically configured to determine the transmission delay of the uplink signal according to the channel quality of the ue to be processed; and calculating the timing advance of the user terminal to be processed according to the transmission delay and the arrival time.
7. The timing adjustment system of claim 5, wherein the computing subsystem is specifically configured to compute the doppler shift and the signal-to-noise ratio of the ue by using a channel estimation algorithm.
8. The timing adjustment system of claim 5, wherein the user terminal comprises: and the division subsystem is used for dividing the wireless data to be transmitted into multi-frame uplink signals.
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| CN111756472B (en) * | 2019-03-28 | 2022-03-29 | 华为技术有限公司 | Uplink communication method and communication device |
| CN113647187A (en) * | 2019-08-05 | 2021-11-12 | Oppo广东移动通信有限公司 | Communication method and communication device |
| US20220272649A1 (en) * | 2019-09-06 | 2022-08-25 | Nakia Technologies Oy | Time of arrival based correction and verification for uplink channel synchronization |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101039154A (en) * | 2006-03-15 | 2007-09-19 | 大唐移动通信设备有限公司 | Method for obtaining transceiver channel transmission time of user terminal |
| CN102089997A (en) * | 2008-07-08 | 2011-06-08 | 蔚蓝公司 | Signal transmission parameter control using channel sounding |
| CN102647781A (en) * | 2011-02-17 | 2012-08-22 | 中兴通讯股份有限公司 | Method for TA (Time Advance) regulation of LTE (Long Term Evolution) and base station |
| CN102833844A (en) * | 2008-04-30 | 2012-12-19 | 电信科学技术研究院 | Method and device for realizing uplink transmission timing advance |
| CN103716120A (en) * | 2012-09-29 | 2014-04-09 | 索尼公司 | Base station, wireless communication terminal, wireless communication system, and wireless communication method |
| CN104272821A (en) * | 2012-05-10 | 2015-01-07 | 瑞典爱立信有限公司 | Uplink timing error reduction method and apparatus |
| CN104956741A (en) * | 2012-10-10 | 2015-09-30 | 高通股份有限公司 | Uplink timing control to reduce call drop |
| CN107347208A (en) * | 2017-06-27 | 2017-11-14 | 阳光凯讯(北京)科技有限公司 | Based on the base station of artificial intelligence technology to the efficient timing adjusting method of terminal and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9992759B2 (en) * | 2015-03-09 | 2018-06-05 | Ofinno Technologies, Llc | Downlink multicast channel and data channel in a wireless network |
-
2018
- 2018-04-23 CN CN201810368091.2A patent/CN108834211B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101039154A (en) * | 2006-03-15 | 2007-09-19 | 大唐移动通信设备有限公司 | Method for obtaining transceiver channel transmission time of user terminal |
| CN102833844A (en) * | 2008-04-30 | 2012-12-19 | 电信科学技术研究院 | Method and device for realizing uplink transmission timing advance |
| CN102089997A (en) * | 2008-07-08 | 2011-06-08 | 蔚蓝公司 | Signal transmission parameter control using channel sounding |
| CN102647781A (en) * | 2011-02-17 | 2012-08-22 | 中兴通讯股份有限公司 | Method for TA (Time Advance) regulation of LTE (Long Term Evolution) and base station |
| CN104272821A (en) * | 2012-05-10 | 2015-01-07 | 瑞典爱立信有限公司 | Uplink timing error reduction method and apparatus |
| CN103716120A (en) * | 2012-09-29 | 2014-04-09 | 索尼公司 | Base station, wireless communication terminal, wireless communication system, and wireless communication method |
| CN104956741A (en) * | 2012-10-10 | 2015-09-30 | 高通股份有限公司 | Uplink timing control to reduce call drop |
| CN107347208A (en) * | 2017-06-27 | 2017-11-14 | 阳光凯讯(北京)科技有限公司 | Based on the base station of artificial intelligence technology to the efficient timing adjusting method of terminal and system |
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