CN107241793A - Ascending data synchronization method and system - Google Patents
Ascending data synchronization method and system Download PDFInfo
- Publication number
- CN107241793A CN107241793A CN201610183116.2A CN201610183116A CN107241793A CN 107241793 A CN107241793 A CN 107241793A CN 201610183116 A CN201610183116 A CN 201610183116A CN 107241793 A CN107241793 A CN 107241793A
- Authority
- CN
- China
- Prior art keywords
- signal
- rru
- delay
- upward signal
- peak value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
Abstract
This application discloses a kind of uplink synchronisation method and system, wherein, method includes：User equipment is sent after upward signal, calculates signal intensity and the signal delay of the upward signal that each radio frequency remote unit RRU is received；According to the signal intensity, effective RRU is selected from the RRU；Minimum value in being delayed according to the signal of effective RRU, is the user device configuration Timing Advance TA；The user equipment sends new upward signal using the TA according to the configuration.Using the present invention, the problem of upstream data is lost in distributing antenna system can be effectively solved.
Description
Technical field
The present invention relates to mobile communication technology, more particularly to a kind of ascending data synchronization method and system.
Background technology
Need application distribution formula antenna in some existing communication systems, such as high-speed railways are in order to solve frequent switching
The problem of, expand the scope of cell using spaced antenna.
Distributing antenna system realizes that multiple cell merges by using BBU+RRU network structure, a BBU band
Multiple RRU, can extend the coverage of single subdistrict.In distributing antenna system, due to UE to multiple RRU
Distance it is different, different RRU upper line delay can be caused different.For the presence of uplink time delay, system be by for
User sets the mode of Timing Advance, to avoid the data transfer caused by time delay asynchronous, so that network side can be in time
UE upstream data is properly received.And for each user, a Timing Advance (TA) can only be configured.
So, the TA can only be corresponding with one of RRU uplink time delay, that is to say, that can only ensure that an antenna connects
The data of receipts are time synchronizeds, and the data that other antennas are received are then it is possible that the situation of time irreversibility.
It is typically from multiple RRU when configuring TA for UE in the synchronization scenario of existing distributing antenna system
In select reception data signal strength highest RRU, then recycle the RRU uplink time delay determine notice to
The TA values of the UE.Receive data signal strength highest and be not meant to that uplink time delay is minimum.When reception data
When signal intensity highest RRU time delay is more than other RRU, UE TA is determined using the time delay, be may result in
There is the situation that other RRU upstream data is received in advance, as shown in figure 1, removing after cyclic prefix (CP)
The upstream data extracted can have the problem of losing.So, just occur that RRU receives the incomplete feelings of UE data
Condition, especially when UE switches between same BBU different RRU, this nonsynchronous influence can be tighter
Weight, the missing of UE data can cause the generation that systematic function declines or even UE goes offline.
The content of the invention
In view of this, it is a primary object of the present invention to provide a kind of uplink synchronisation method and system, can effectively it solve
The problem of upstream data is lost in distributing antenna system.
In order to achieve the above object, technical scheme proposed by the present invention is：
A kind of uplink synchronisation method, including：
User equipment is sent after upward signal, calculates the upward signal that each radio frequency remote unit RRU is received
Signal intensity and signal delay；
According to the signal intensity, effective RRU is selected from the RRU；According to effective RRU
Minimum value in signal delay, is the user device configuration Timing Advance TA；
The user equipment sends new upward signal using the TA according to the configuration.
A kind of uplink synchronous system, including：
Synchronous control unit, for when receiving the upward signal of user equipment transmission, calculating each remote radio list
Signal intensity and the signal delay for the upward signal that first RRU is received；For according to the signal intensity, from institute
State and effective RRU is selected in RRU；Minimum value in being delayed according to the signal of effective RRU, is described
User device configuration Timing Advance TA；
User equipment, for the Timing Advance configured according to the BBU, sends upward signal.
In summary, uplink synchronisation method proposed by the present invention and system, prolong according to minimum uplink receiving in effective RRU
When, configure UE Timing Advance, in this way, it is possible to prevente effectively from distributed system part RRU receive it is upper
The incomplete problem of row data, so as to improve systematic function, it is to avoid user goes offline when switching.
Brief description of the drawings
Fig. 1 is the schematic diagram that RRU receives upstream data in advance；
Fig. 2 is the method flow schematic diagram of the embodiment of the present invention；
Fig. 3 is the schematic diagram that RRU delays receive upstream data；
Fig. 4 is the performance comparison analogous diagram that user data delay is received and user data is received in advance；
Fig. 5 is the system structure diagram of the embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing and specific implementation
The present invention is described in further detail for example.
The core concept of the present invention is, in setup time lead, not only to consider quality of uplink signal, also examine
Consider RRU reception delay, using the minimum reception delay in effective RRU, configure UE Timing Advance,
So, can only there is a situation where that the data delay that UE is sent is received, in this case be not in user data loss
The problem of, it therefore, it can be prevented effectively from the upstream data that part RRU is received in distributed system incomplete
Problem.
Fig. 2 is the schematic flow sheet of the embodiment of the present invention one, as shown in Fig. 2 the embodiment mainly includes：
Step 201, user equipment are sent after upward signal, calculate what each radio frequency remote unit RRU was received
Signal intensity and the signal delay of the upward signal.
In this step, received for receiving each RRU of user equipment upward signal, it is necessary to calculate the RRU
Signal intensity and the signal delay of the upward signal arrived, prolong so as to signal intensity and signal based on each RRU
When, it is user device configuration Timing Advance TA.
It is preferred that the signal intensity and signal delay can be calculated using following methods：
Channel estimation is carried out according to the upward signal, according to the result of the channel estimation, channel time domain is determined
Peak value size and the peak value delay of response, the peak value are sized to the signal intensity of the upward signal,
The peak value is delayed and is defined as the signal delay of the upward signal.
Step 202, according to the signal intensity, effective RRU is selected from the RRU；Had according to described
The minimum value in RRU signal delay is imitated, is the user device configuration Timing Advance TA.
In this step, the minimum signal in effective RRU is delayed, for user device configuration TA values.
So, it on the one hand may insure that the corresponding effective RRU of minimum signal delay can realize that upstream data is synchronous, separately
On the one hand, other effectively RRU can only be received to the data delay that UE is sent, as shown in figure 3, the situation
Under, RRU can receive complete upstream data, without there are the feelings of the loss of data caused by receiving in advance
Condition.In this manner it is possible to be prevented effectively from, part RRU is received in distributed system upstream data is incomplete to ask
Topic.
It is preferred that effective RRU can be gone out using following method choices：
The RRU that the signal intensity is more than predetermined threshold value is defined as effective RRU.
In actual applications, the threshold value, the preferable RRU of the quality of reception for filtering out upward signal, with
The communication needs of user equipment are met, it is suitable specifically can be according to actual needs configured by those skilled in the art
Value.
Step 203, the user equipment send new upward signal using the TA according to the configuration.
In this step, the TA that user equipment is newly configured using network side carries out the transmission of upward signal, due to this
TA is determined according to effective RRU minimum delay, thereby it can be assured that each effective RRU can be received
Complete upstream data, so as to improve systematic function, it is to avoid user falls when switching between different RRU
The problem of line.
By above-mentioned technical proposal as can be seen that the present invention utilizes such scheme, by based in effective RRU most
Small time delay configures the TA of user equipment so that otherwise receptions of multiple RRU to upstream data under BBU be
It is synchronous, otherwise it is that data delay is received, so, it can be ensured that the integrality that effective RRU is received to upstream data.
In order to further illustrate that user data delay is given in the above-mentioned technique effect of the present invention, Fig. 4 to be received and user
The performance comparison analogous diagram that data are received in advance, it will be apparent from this figure that under same channel quality, in thing
Manage on Uplink Shared Channel (PUSCH), the reception error code being delayed when user data is received in advance than user data
Rate is high, it is seen then that received in advance compared to user data, and user data delay reception can effectively improve up connect
Receive performance.
Fig. 5 is a kind of uplink synchronous system structure diagram corresponding with the above method, as shown in figure 5, should
System includes：
Synchronous control unit, for when receiving the upward signal of user equipment transmission, calculating each radio frequency and drawing
The signal intensity for the upward signal that remote unit R RU is received and signal delay；For strong according to the signal
Degree, selects effective RRU from the RRU；In being delayed according to the signal of effective RRU most
Small value, is the user device configuration Timing Advance TA.
User equipment, for the Timing Advance configured according to the BBU, sends upward signal.
It is preferred that the synchronous control unit, for carrying out channel estimation according to the upward signal, according to institute
The result of channel estimation is stated, peak value size and the peak value delay of channel time domain response are determined, by the peak value size
It is defined as the signal intensity of the upward signal, the signal that peak value delay is defined as the upward signal is prolonged
When.
It is preferred that the synchronous control unit, the RRU for the signal intensity to be more than to predetermined threshold value
It is defined as effective RRU.
In summary, presently preferred embodiments of the present invention is these are only, the protection of the present invention is not intended to limit
Scope.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc.,
It should be included within protection scope of the present invention.
Claims (6)
1. a kind of uplink synchronisation method, it is characterised in that including：
User equipment is sent after upward signal, calculates the upward signal that each radio frequency remote unit RRU is received
Signal intensity and signal delay；
According to the signal intensity, effective RRU is selected from the RRU；According to effective RRU
Minimum value in signal delay, is the user device configuration Timing Advance TA；
The user equipment sends new upward signal using the TA according to the configuration.
2. according to the method described in claim 1, it is characterised in that the calculating includes：
Channel estimation is carried out according to the upward signal, according to the result of the channel estimation, determines that channel time domain is responded
Peak value size and peak value delay, the peak value is sized to the signal intensity of the upward signal, by the peak
Value delay is defined as the signal delay of the upward signal.
3. according to the method described in claim 1, it is characterised in that described to select effective RRU and include：
The RRU that the signal intensity is more than predetermined threshold value is defined as effective RRU.
4. a kind of uplink synchronous system, it is characterised in that including：
Synchronous control unit, for when receiving the upward signal of user equipment transmission, calculating each remote radio list
Signal intensity and the signal delay for the upward signal that first RRU is received；For according to the signal intensity, from institute
State and effective RRU is selected in RRU；Minimum value in being delayed according to the signal of effective RRU, is described
User device configuration Timing Advance TA；
User equipment, for the Timing Advance configured according to the BBU, sends upward signal.
5. system according to claim 4, it is characterised in that the synchronous control unit, for according to described
Upward signal carries out channel estimation, according to the result of the channel estimation, determine channel time domain response peak value size and
Peak value is delayed, and the peak value is sized to the signal intensity of the upward signal, and peak value delay is defined as
The signal delay of the upward signal.
6. system according to claim 4, it is characterised in that the synchronous control unit, for by the letter
The RRU that number intensity is more than predetermined threshold value is defined as effective RRU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183116.2A CN107241793A (en) | 2016-03-28 | 2016-03-28 | Ascending data synchronization method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183116.2A CN107241793A (en) | 2016-03-28 | 2016-03-28 | Ascending data synchronization method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107241793A true CN107241793A (en) | 2017-10-10 |
Family
ID=59983249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610183116.2A Pending CN107241793A (en) | 2016-03-28 | 2016-03-28 | Ascending data synchronization method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107241793A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103001686A (en) * | 2011-09-16 | 2013-03-27 | 普天信息技术研究院有限公司 | Uplink receiving method for distributed antenna system |
| CN103491622A (en) * | 2012-06-12 | 2014-01-01 | 电信科学技术研究院 | Uplink transmission method and device |
| CN103889045A (en) * | 2012-12-21 | 2014-06-25 | 普天信息技术研究院有限公司 | Uplink data timing synchronization method |
| CN104837160A (en) * | 2014-02-08 | 2015-08-12 | 普天信息技术研究院有限公司 | Uplink timing TA measuring method in distributed base station system |
-
2016
- 2016-03-28 CN CN201610183116.2A patent/CN107241793A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103001686A (en) * | 2011-09-16 | 2013-03-27 | 普天信息技术研究院有限公司 | Uplink receiving method for distributed antenna system |
| CN103491622A (en) * | 2012-06-12 | 2014-01-01 | 电信科学技术研究院 | Uplink transmission method and device |
| CN103889045A (en) * | 2012-12-21 | 2014-06-25 | 普天信息技术研究院有限公司 | Uplink data timing synchronization method |
| CN104837160A (en) * | 2014-02-08 | 2015-08-12 | 普天信息技术研究院有限公司 | Uplink timing TA measuring method in distributed base station system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109792608B (en) | Timing adjustment free scheme for uplink synchronization operation | |
| CN113303005B (en) | Remote interference suppression resource allocation | |
| CN110601809B (en) | Information sending method and device and information receiving method and device | |
| US20150319701A1 (en) | System and method for timing alignment of lte cells and inter-operator co-existence on unlicensed spectrum | |
| US10673604B2 (en) | TDD timing recovery in a distributed antenna system | |
| CN107710846A (en) | The Poewr control method and device of data transfer | |
| CN104350777A (en) | Wireless base station, user terminal, wireless communication system and interference estimation method | |
| CN103001686B (en) | Uplink receiving method for distributed antenna system | |
| CN102783077A (en) | Apparatus and method for scheduling in carrier aggregated communication systems based on a transmit-receive-frequency gap band | |
| EP2941081B1 (en) | Method and device for processing random access preamble | |
| WO2015078483A1 (en) | Method and apparatus for combining half- and full duplex transmission in a relay | |
| CN102958063B (en) | Reduce the method, system and device of presence of intercell interference | |
| US20180176875A1 (en) | Guard period in a frame | |
| CN103428776A (en) | Method and device for managing cells | |
| CN103167598B (en) | A kind of remote communication method and device | |
| CN113596953A (en) | Link state conversion method and related equipment | |
| CN110383937A (en) | Method and apparatus for dual stack user equipment and the wireless dual link being electrically accessed between two Base Band Unit of telecommunication network | |
| CN110677912A (en) | Information sending method and device and information receiving method and device | |
| CN103491041B (en) | synchronization method, base station and terminal | |
| CN107241793A (en) | Ascending data synchronization method and system | |
| US10932289B2 (en) | Signal transmission method and device | |
| CN102711186B (en) | The method that in CoMP up link, time advance adjustment reference node is chosen and device | |
| CN104113358A (en) | Interference eliminating method for common-frequency work of macro cell and family base station | |
| CN104427629B (en) | A kind of method that user equipment is grouped in cell | |
| CN113039743B (en) | Coding of Remote Interference Management (RIM) Reference Signal (RS) Identifiers (IDs) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171010 |