CN103945424B - A kind of sequential control method of wireless discharging-directly station and a kind of wireless discharging-directly station - Google Patents
A kind of sequential control method of wireless discharging-directly station and a kind of wireless discharging-directly station Download PDFInfo
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- CN103945424B CN103945424B CN201310024181.7A CN201310024181A CN103945424B CN 103945424 B CN103945424 B CN 103945424B CN 201310024181 A CN201310024181 A CN 201310024181A CN 103945424 B CN103945424 B CN 103945424B
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Abstract
The invention discloses the sequential control method of wireless discharging-directly station, suitable for TD LTE systems, t1 between wireless discharging-directly station is determined at the beginning of the UpPTS in special subframe, t1 is modified according to physical link situation, obtain the opening time of up-link, when reaching the opening time of up-link, up-link is opened；In addition, wireless discharging-directly station can determine that the switching interval Δ of downlink, and calculate t0+ Δs, shut-in time using result of calculation as downlink, wherein, t0 represents the end time of the DwPTS in special subframe, when reaching the shut-in time of downlink, downlink is closed.The present invention discloses wireless discharging-directly station.Using scheme of the present invention, the uplink interference to adjacent area and the reduction wasting of resources can be reduced, and the performance of downlink can be improved.
Description
Technical field
The present invention relates to wireless technology, the sequential control method of more particularly to a kind of wireless discharging-directly station and a kind of wireless straight
Put station.
Background technology
Because wireless signal can be decayed with the increase of propagation distance, therefore the user terminal of cell edge and blind
The signal transmitting and receiving performance of the user terminal in area can be poor.In order to solve this problem, repeater is introduced in the prior art, is compared
Conventional repeater is wireless discharging-directly station.
Wireless discharging-directly station is a kind of same frequency relay station that can be directly amplified to mobile communication signal, and it will not change
The frequency of original signal, will not also it make any processing to information entrained in original signal.Fig. 1 be existing wireless discharging-directly station with
Relation schematic diagram between base station and user terminal.
In time-division Long Term Evolution（TD-LTE, Time Division Long Term Evolution）It is up etc. in system
Signal and downstream signal use different frequency ranges respectively, i.e., using FDD（FDD, Frequency Division
Duplexing）Mode of operation.Because the frequency range of upward signal and downstream signal is different from direction, required signal is strong
Degree is also different, therefore wireless discharging-directly station must possess the ability being respectively processed to upward signal and downstream signal, i.e., up
Two sets of independent transceiver channels are respectively adopted in signal and downstream signal.
In addition, in TD-LTE system, in some cases, such as, it is necessary to enter between base station after wireless discharging-directly station is opened
Row is synchronous.
The method of synchronization more commonly used at present is baseband decoding mode, and implementation process mainly includes：
1）Wireless discharging-directly station receives the signal that base station is sent, and therefrom detects master sync signal（PSS, Primary
Synchronisation Signal）, and according to PSS signal acquisitions to 5ms time synchronizeds；
2）According to 5ms time synchronizeds, wireless discharging-directly station carries out the cyclic prefix time（CP, Cyclic Prefix）Length is sentenced
It is disconnected, Frequency Synchronization is obtained, and the signal to receiving carries out frequency compensation；
3）Wireless discharging-directly station carries out auxiliary synchronous signals according to the signal after compensation（SSS, Secondary
SynchronizationSignal）Detection, obtain 10ms time synchronizeds.
After completing synchronization, wireless discharging-directly station can obtain up-downgoing proportioning etc. from base station, and to access link and passback chain
Road carries out SECO.
Using up-downgoing proportioning as 1（I.e. uplink and downlink timeslot proportioning is 2:2）Exemplified by, Fig. 2 is the sequential of existing wireless discharging-directly station
Control mode schematic diagram.As shown in Fig. 2 initial, the downlink of wireless discharging-directly station is in open mode, could so cause base
Signal of standing can be received normally into wireless discharging-directly station, after wireless discharging-directly station and base station complete synchronous etc., you can start into
Row SECO；Wherein, τ represents the propagation delay time between base station and wireless discharging-directly station, and gp1 is represented between up-downgoing switch switching
Protection interval, up-downgoing switch between need to be provided with protection interval, with prevent up-downgoing with convince by patient analysis cause wirelessly directly put
Phenomena such as self-excitation of standing damages.
As shown in Fig. 2 the transfer point of downstream-to-upstream appears in the 2nd subframe i.e. descending pilot frequency time slot of special subframe
（DwPTS, Downlink Pilot Time Slot）And protection interval（GP, Guard Period）Between, i.e., when DwPTS terminates
When, downing switch is closed, i.e., downlink is closed；After downlink is closed, by gp1 protection interval, open up
Switch, that is, open up-link, and up-link is started working；And it is up to descending transfer point and appears in the 4th and the 5th son
Between frame, now, the opening time of downlink and the 5th synchronizing sub-frame, downlink are started working, and are spaced before this
Gp1, up-link are closed, and up-link is stopped.
But aforesaid way can also have the problem of certain in actual applications：As shown in Fig. 2 some not up
In the time of signal, as special subframe GP in, up-link is still in open mode, so as to cause wireless discharging-directly station pair
Adjacent area produces extra uplink interference, and introduces the extra wasting of resources.
The content of the invention
In view of this, the invention provides the sequential control method of wireless discharging-directly station and wireless discharging-directly station, can reduce
Uplink interference and the reduction wasting of resources to adjacent area, and the performance of downlink can be improved.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of sequential control method of wireless discharging-directly station, this method are applied to time-division Long Term Evolution TD-LTE system, including：
T1 between wireless discharging-directly station is determined at the beginning of the uplink pilot time slot UpPTS in special subframe；
The t1 is modified according to physical link situation, obtains the opening time of up-link；
When reaching the opening time of the up-link, the up-link is opened.
A kind of sequential control method of wireless discharging-directly station, this method are applied to time-division Long Term Evolution TD-LTE system, including：
Wireless discharging-directly station determines the switching interval Δ of downlink；
Calculate t0+ Δs, the shut-in time using result of calculation as the downlink；Wherein, the t0 represents special son
The end time of descending pilot frequency time slot DwPTS in frame；
When reaching the shut-in time of the downlink, the downlink is closed.
A kind of wireless discharging-directly station, the wireless discharging-directly station suitable for time-division Long Term Evolution TD-LTE system, including：
Upload control module, for determining the uplink pilot time slot UpPTS in special subframe at the beginning of between t1；According to reality
Border link condition is modified to the t1, obtains the opening time of up-link；When reaching the opening of the up-link
Between when, open the up-link.
A kind of wireless discharging-directly station, the wireless discharging-directly station suitable for time-division Long Term Evolution TD-LTE system, including：
Descending control module, for determining the switching interval Δ of downlink；And calculate t0+ Δs, using result of calculation as
The shut-in time of the downlink, wherein, at the end of the t0 represents the descending pilot frequency time slot DwPTS in special subframe
Between；When reaching the shut-in time of the downlink, the downlink is closed.
It can be seen that using scheme of the present invention, between wireless discharging-directly station can be obtained at the beginning of the UpPTS in special subframe
T1, and t1 is modified according to physical link situation, so as to obtain the opening time of required up-link, correspondingly, when
When reaching the opening time of up-link, up-link is opened；, can be more in scheme of the present invention compared in the prior art
Add the opening time for accurately determining up-link, so as to reduce the unnecessary up transmission time, and then reduce to neighbour
The uplink interference in area and reduce the wasting of resources；Moreover, using scheme of the present invention, the shut-in time of downlink can be entered
Row optimization, to include more descending multipath signals in the opening time of downlink, so as to improve the performance of downlink；
Further, scheme of the present invention implements simple and convenient, it is easy to popularize and promotes.
Brief description of the drawings
Relation schematic diagrams of the Fig. 1 between existing wireless discharging-directly station and base station and user terminal.
Fig. 2 is the SECO schematic diagram of existing wireless discharging-directly station.
Fig. 3 is the flow chart of the sequential control method embodiment of wireless discharging-directly station of the present invention.
Fig. 4 is the SECO mode of wireless discharging-directly station of the present invention compared with the SECO mode of existing wireless discharging-directly station
Schematic diagram.
Embodiment
For problems of the prior art, a kind of SECO of the wireless discharging-directly station after improvement is proposed in the present invention
Scheme, the uplink interference to adjacent area and the reduction wasting of resources can be reduced.
In order that technical scheme is clearer, clear, develop simultaneously embodiment referring to the drawings, to institute of the present invention
The scheme of stating is described in further detail.
Fig. 3 is the flow chart of the sequential control method embodiment of wireless discharging-directly station of the present invention.As shown in figure 3, including：
Step 31：Wireless discharging-directly station determines the uplink pilot time slot in special subframe（UpPTS, Uplink Pilot Time
Slot）At the beginning of between t1.
How prior art is defined as.
Step 32：Wireless discharging-directly station is modified according to physical link situation to t1, obtains the opening time of up-link.
From figure 2 it can be seen that it is GP before UpPTS, according to prior art, in GP, although being sent out without upward signal
Send, but up-link is still in open mode, so as to cause wireless discharging-directly station to produce extra uplink interference to adjacent area, and
Introduce the extra wasting of resources.
And in scheme of the present invention, GP can be avoided, i.e., still makes up-link be closed in GP.
In addition, in order to more accurately determine the opening time of up-link, to ensure being properly received for upward signal, nothing
Line repeater may also be combined with physical link situation, carries out certain adjustment to t1 value, i.e., certain amendment is carried out to it.
Specifically, wireless discharging-directly station can obtain time advance value first（TA, TimingAdvance）, i.e., up needs
The time opened in advance；Afterwards, t1-TA-gp2-p1, and the opening time using result of calculation as up-link are calculated；P1 tables
Show the processing delay of wireless discharging-directly station, gp2 represents protection interval.
Wherein, wireless discharging-directly station can initiate Stochastic accessing to base station（RA, Random Access）Process, during RA
TA is obtained from base station, how to be retrieved as prior art.
In addition, TA, P1 and pg2 etc. specific value are depending on actual conditions.
Step 33：When reaching the opening time of up-link, wireless discharging-directly station opens up-link.
When reaching the opening time of up-link, i.e., when reaching t1-TA-gp2-p1, wireless discharging-directly station is opened up
Link so that up-link is started working.
In addition, also, it has been proposed that can be optimized to the shut-in time of downlink, so as to descending chain in scheme of the present invention
Comprising more descending multipath signals in the opening time on road, so as to improve performance of downlink etc..
Specific implementation may include：
1）Wireless discharging-directly station determines the switching interval Δ of downlink；
Because downlink is usually from base station to wireless discharging-directly station, the base station may be outdoor macro station etc., scattering ratio
Relatively abundant, delay spread is larger, therefore, an extra switching interval Δ can be introduced, to adjust the shut-in time of downlink；
It is preferred that the value of Δ can be equal to CP, CP is OFDM（OFDM, Orthogonal Frequency
Division Multiplexing）The cyclic prefix time of symbol；
2）Wireless discharging-directly station calculates t0+ Δs, the shut-in time using result of calculation as downlink；Wherein, t0 represents special
The end time of DwPTS in different subframe, i.e., the shut-in time of downlink of the prior art；
3）When reaching the shut-in time of downlink, wireless discharging-directly station closes downlink；
When reaching the shut-in time of downlink, i.e., when reaching t0+ Δs, wireless discharging-directly station closes downlink, makes
Downlink is obtained to be stopped.
Based on above-mentioned introduction, Fig. 4 be SECO mode and the existing wireless discharging-directly station of wireless discharging-directly station of the present invention when
Sequence control mode comparison schematic diagram.
As shown in figure 4, in the prior art, the shut-in time of downlink is DwPTS end time t0, and institute of the present invention
State in scheme, the shut-in time of downlink is changed into t0+ Δs；
In the prior art, the opening time of up-link is t0+gp1, and in scheme of the present invention, up-link
Opening time is changed into t1-TA-gp2-p1.
The present invention discloses a kind of wireless discharging-directly station embodiment, the wireless discharging-directly station suitable for TD-LTE system,
Including：
Upload control module, for determining the UpPTS in special subframe at the beginning of between t1；According to physical link situation pair
T1 is modified, and obtains the opening time of up-link；When reaching the opening time of up-link, up-link is opened.
Wherein, may particularly include in upload control module：
First processing units, for obtaining TA；And t1-TA-gp2-p1 is calculated, using result of calculation beating as up-link
ETAD expected time of arrival and departure, it is sent to second processing unit；Wherein, p1 represents the processing delay of wireless discharging-directly station, and gp2 represents protection interval；
Second processing unit, for when reaching the opening time of up-link, opening up-link.
Specifically, first processing units initiate RA processes to base station, and TA is obtained from base station during RA.
It can also further comprise in above-mentioned wireless discharging-directly station：
Descending control module, for determining the switching interval Δ of downlink；And calculate t0+ Δs, using result of calculation as
The shut-in time of downlink, wherein, t0 represents the end time of the DwPTS in special subframe；When the pass for reaching downlink
When closing the time, downlink is closed.
It is preferred that the value of Δ is equal to CP.
Or the invention discloses another wireless discharging-directly station embodiment, the wireless discharging-directly station to be applied to TD-LTE system
In, including：
Descending control module, for determining the switching interval Δ of downlink；And calculate t0+ Δs, using result of calculation as
The shut-in time of downlink, wherein, t0 represents the end time of the DwPTS in special subframe；When the pass for reaching downlink
When closing the time, downlink is closed.
It is preferred that the value of Δ is equal to CP.
The specific workflow of said apparatus embodiment refer to the respective description in preceding method embodiment, herein no longer
Repeat.
In a word, using scheme of the present invention, the opening time of up-link can be more accurately determined, so as to reduce
Unnecessary up transmission time, and then reduce to the uplink interference of adjacent area and reduce the wasting of resources；Moreover, using this
The scheme is invented, can effectively improve the performance of downlink；Further, scheme of the present invention implements simple side
Just, it is easy to popularize and promote.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (8)
1. a kind of sequential control method of wireless discharging-directly station, it is characterised in that this method is applied to time-division Long Term Evolution TD-LTE
System, including：
T1 between wireless discharging-directly station is determined at the beginning of the uplink pilot time slot UpPTS in special subframe；
The t1 is modified according to physical link situation, obtains the opening time of up-link；
When reaching the opening time of the up-link, the up-link is opened；
The wireless discharging-directly station is modified according to physical link situation to the t1, obtains the opening time bag of up-link
Include：
The wireless discharging-directly station obtains time advance value TA；
Calculate t1-TA-gp2-p1, the opening time using result of calculation as the up-link；
Wherein, the p1 represents the processing delay of the wireless discharging-directly station, and the gp2 represents protection interval GP.
2. according to the method for claim 1, it is characterised in that the wireless discharging-directly station, which obtains TA, to be included：
The wireless discharging-directly station initiates Stochastic accessing RA processes to base station, from described in base station acquisition during the RA
TA。
3. method according to claim 1 or 2, it is characterised in that this method further comprises：
The wireless discharging-directly station determines the switching interval Δ of downlink；
Calculate t0+ Δs, the shut-in time using result of calculation as the downlink；Wherein, the t0 is represented in special subframe
Descending pilot frequency time slot DwPTS end time；
When reaching the shut-in time of the downlink, the downlink is closed.
4. according to the method for claim 3, it is characterised in that the value of the Δ is equal to cyclic prefix time CP.
A kind of 5. wireless discharging-directly station, it is characterised in that the wireless discharging-directly station suitable for time-division Long Term Evolution TD-LTE system,
Including：
Upload control module, for determining the uplink pilot time slot UpPTS in special subframe at the beginning of between t1；According to actual chain
Road situation is modified to the t1, obtains the opening time of up-link；When reaching the opening time of the up-link,
Open the up-link；
The upload control module includes：
First processing units, for obtaining time advance value TA；And t1-TA-gp2-p1 is calculated, using result of calculation as on described
The opening time of line link, it is sent to second processing unit；Wherein, the p1 represents the processing delay of the wireless discharging-directly station,
The gp2 represents protection interval GP；
The second processing unit, for when reaching the opening time of the up-link, opening the up-link.
6. wireless discharging-directly station according to claim 5, it is characterised in that
The first processing units initiate Stochastic accessing RA processes to base station, and institute is obtained from the base station during the RA
State TA.
7. the wireless discharging-directly station according to claim 5 or 6, it is characterised in that the wireless discharging-directly station further comprises：
Descending control module, for determining the switching interval Δ of downlink；And calculate t0+ Δs, result of calculation is used as described in
The shut-in time of downlink, wherein, the t0 represents the end time of the descending pilot frequency time slot DwPTS in special subframe；When
When reaching the shut-in time of the downlink, the downlink is closed.
8. wireless discharging-directly station according to claim 7, it is characterised in that the value of the Δ is equal to the cyclic prefix time
CP。
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| CN103945424B true CN103945424B (en) | 2018-02-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105338612B (en) * | 2014-08-08 | 2019-12-27 | 中国移动通信集团有限公司 | Synchronization and control method and device of wireless repeater and wireless repeater |
| CN107801244B (en) * | 2016-08-31 | 2020-05-05 | 北京佰才邦技术有限公司 | Method and device for configuring transmission interval and user equipment |
| CN110875771B (en) * | 2018-08-31 | 2021-05-25 | 展讯通信（上海）有限公司 | Communication method and system between multi-node repeaters |
| US11212829B2 (en) * | 2018-10-05 | 2021-12-28 | Qualcomm Incorporated | Uplink processing techniques for reduced uplink timelines in wireless communications |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003090490A1 (en) * | 2002-04-19 | 2003-10-30 | Huawei Technologies Co. Ltd. | A kind of remote maintain method and apparatus of direct amplifying station |
| CN1964209A (en) * | 2006-11-27 | 2007-05-16 | 武汉虹信通信技术有限责任公司 | A method to realize time division synchronous CDMA repeater power saving |
| CN101018086A (en) * | 2006-02-10 | 2007-08-15 | 大唐移动通信设备有限公司 | Synchronization receiving and transmitting control method and system of relay amplifier in the TD-SCDMA system |
| CN201805426U (en) * | 2010-05-17 | 2011-04-20 | 福建先创通信有限公司 | Autosynchronous SCDMA optic-fiber repeater equipment |
-
2013
- 2013-01-23 CN CN201310024181.7A patent/CN103945424B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003090490A1 (en) * | 2002-04-19 | 2003-10-30 | Huawei Technologies Co. Ltd. | A kind of remote maintain method and apparatus of direct amplifying station |
| CN101018086A (en) * | 2006-02-10 | 2007-08-15 | 大唐移动通信设备有限公司 | Synchronization receiving and transmitting control method and system of relay amplifier in the TD-SCDMA system |
| CN1964209A (en) * | 2006-11-27 | 2007-05-16 | 武汉虹信通信技术有限责任公司 | A method to realize time division synchronous CDMA repeater power saving |
| CN201805426U (en) * | 2010-05-17 | 2011-04-20 | 福建先创通信有限公司 | Autosynchronous SCDMA optic-fiber repeater equipment |
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