CN101286762A - Method for transmitting sounding pilot and transmitting device - Google Patents
Method for transmitting sounding pilot and transmitting device Download PDFInfo
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- CN101286762A CN101286762A CNA200710095867XA CN200710095867A CN101286762A CN 101286762 A CN101286762 A CN 101286762A CN A200710095867X A CNA200710095867X A CN A200710095867XA CN 200710095867 A CN200710095867 A CN 200710095867A CN 101286762 A CN101286762 A CN 101286762A
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Abstract
The invention discloses a method for sending out a sounding pilot frequency in a time division duplex (TDD) system and a sending device. The method comprises that a fixed symbol position is arranged in an upstream sub-frame and the sounding pilot frequency is sent out in the fixed symbol position of the upstream sub-frame. The method of the invention leads the symbol positions used for sending out the sounding pilot frequency to be the same in adjacent base stations or cells, avoids the interference of the pilot frequency and data between the adjacent base stations or cells and ensures the transmission quality of the data; in addition, as the symbol position used for sending out the sounding pilot frequency is fixed, the base station needs not to indicate the symbol position used for sending out the sounding pilot frequency to a terminal each time when sending out the sounding pilot frequency, thereby reducing the signaling overhead of the base station and saving resources.
Description
Technical field
The present invention relates to wireless communication technology, refer to a kind of method and dispensing device that in time division duplex (TDD, Time DivisionDuplex) system, sends the sounding pilot tone especially.
Background technology
In wireless communication system, pilot signal is by the signal that knows of base station or terminal emission, is used to estimate channel status, calibrates, and also can be used as the reference of demodulating data.
At Long Term Evolution (LTE, Long Time Evolution) in the system, up except the emission demodulation pilot frequency, also can launch a kind of sounding pilot tone, the up sounding pilot tone of coming self terminal that the base station will receive (UpLink sounding Reference Symbol) is measured the signal of monitoring as channel status, so that the state information of up channel to be provided, like this, dispatch up channel according to the state information of up channel the base station; Especially in the TDD system, can also utilize the state information of up channel,, down channel be dispatched according to the reciprocity characteristics of up-downgoing channel.
Up sounding pilot tone is at different bandwidth, different terminal rooms, and the mode that can adopt frequency division, time-division or sign indicating number to divide is distinguished.On identical running time-frequency resource, in order to distinguish the sounding pilot tone of different terminals exactly, the sequence that each terminal is used should mutually orthogonally cause the error to the channel conditions estimation to avoid interference.
Fig. 1 is the frame structure schematic diagram of corresponding tdd mode in the existing LTE system, as shown in Figure 1, with TDD optional (Alternative) frame structure is example, in the Alternative frame structure, a up subframe is made of two short symbols (short block) and eight long symbols (long piece), and specify the sounding pilot tone in long symbol, to send, but the sounding pilot tone is in to send not concrete the appointment in which long symbol.Among Fig. 1, the subframe that the arrow that adopts direction to make progress is represented is a sub-frame of uplink, and the subframe that the arrow that employing is directed downwards is represented is a descending sub frame; Exist between the uplink and downlink subframe/the down conversion point, in the frame structure on/position of down conversion point may difference, in the Alternative frame as shown in Figure 1, on/down conversion point is between subframe 3 and subframe 4.
At present, in the frame structure of TDD, the position that is used to send the sounding pilot tone can be notified to terminal by the base station, but certain sub-frame of uplink that is not limited to determine, certain long symbol that also is not limited to determine.Usually, the time of predesignating in the base station, terminal can send the sounding pilot tone in the long symbol position of the each appointment in base station.
Find out easily from the existing method that sends the sounding pilot tone, the character position of sounding pilot tone in frame structure is uncertain fully, and the position that at every turn sends the sounding pilot tone may be different, need the base station to indicate to terminal, increase the base station signaling consumption, wasted resource;
The more important thing is that if in adjacent base station or the sub-district, the character position that is used to send the sounding pilot tone is inequality, can cause the mutual interference mutually of adjacent base station or minizone pilot tone and data, had a strong impact on the quality of carrying out channel estimating according to pilot tone.
Summary of the invention
In view of this, embodiment of the invention technical problem to be solved provides a kind of method and dispensing device of the sounding of transmission pilot tone, can avoid the mutual interference mutually of adjacent base station or minizone pilot tone and data, saves base station resource.
For achieving the above object, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of method that sends the sounding pilot tone, this method comprises:
The mark-hold position is set in sub-frame of uplink, and in described mark-hold position, sends the sounding pilot tone.
A kind of dispensing device comprises module and sending module are set;
The described module that is provided with is used at sub-frame of uplink the mark-hold position being set;
Described sending module is used for the pilot tone at described mark-hold position transmission sounding.
As seen the technical scheme that is provided by the invention described above embodiment is provided with the character position of fixing transmission sounding pilot tone in sub-frame of uplink, and sends the sounding pilot tone in the mark-hold position of described sub-frame of uplink.The method of the embodiment of the invention makes in adjacent base station or sub-district, and the character position that is used to send the sounding pilot tone is identical, avoided the mutual interference mutually of adjacent base station or minizone pilot tone and data, guaranteed the transmission quality of data; And, to fix owing to be used to send the character position of sounding pilot tone, the base station needn't be each when sending the sounding pilot tone, is used to send the character position of sounding pilot tone to the terminal indication, reduced the base station signaling consumption, saved resource.
Description of drawings
Fig. 1 is the frame structure schematic diagram of corresponding tdd mode in the LTE system in the prior art;
Fig. 2 is the flow chart of the method for the embodiment of the invention;
Fig. 3 is the schematic diagram of frame structure embodiment one that is used to send the sounding pilot tone of corresponding tdd mode in the LTE of the present invention system;
Fig. 4 is the schematic diagram of frame structure embodiment two that is used to send the sounding pilot tone of corresponding tdd mode in the LTE of the present invention system;
Fig. 5 is the schematic diagram of frame structure embodiment three that is used to send the sounding pilot tone of corresponding tdd mode in the LTE of the present invention system;
Fig. 6 is the composition schematic diagram of the embodiment of dispensing device of the present invention.
Embodiment
In the embodiments of the invention, the character position of fixing transmission sounding pilot tone is set in sub-frame of uplink, and in the mark-hold position of described sub-frame of uplink, sends the sounding pilot tone.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing preferred embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 2 is the flow chart of the method for the embodiment of the invention, and as shown in Figure 2, the method for the embodiment of the invention may further comprise the steps:
Step 200: the mark-hold position is set in sub-frame of uplink.
In this step, interference for fear of sounding pilot tone and data, need to determine that a fixing character position sends pilot tone, the base station also needn't be when sending the sounding pilot tone at every turn like this, the character position that is used to send the sounding pilot tone to the terminal indication, reduce the base station signaling consumption, saved resource.
In the frame structure of LTE system, the up-downgoing time-division, after continuous several sub-frame of uplink through on/down conversion point just has a descending sub frame, only when beginning, this descending sub frame just can be used for the reference of descending scheduling from the information of up sounding pilot tone acquisition, therefore, consider from the angle of paring down expenses, can be in continuous sub-frame of uplink minimum a character position that is used to send the sounding pilot tone be set.
Further, for on guaranteeing/descending sub frame behind the down conversion point can in time utilize the information that obtains from the sounding pilot tone, the time interval between described mark-hold position and the last/down conversion point should be greater than the scheduling processing delay of base station to down channel, and this time interval can be the subframe magnitude.
Preferably, consider in the TDD system on/descending proportioning is variable, promptly sub-frame of uplink number and uncertain just might not be reserved the scheduling processing delay of enough base stations to down channel.Therefore, in order to utilize the information of up sounding pilot tone most possibly, the character position that sends pilot tone can be arranged in first sub-frame of uplink, like this, not only guaranteed not to be subjected to/influence of descending proportioning, also guarantee simultaneously the last/down conversion point of distance farthest, made descending sub frame can utilize the information that obtains from up sounding pilot tone as early as possible.
Fig. 3 is the schematic diagram of frame structure embodiment one that is used to send the sounding pilot tone of corresponding tdd mode in the LTE of the present invention system, as shown in Figure 3, supposes that frame is the Alternative frame, and the up-downgoing proportioning is: on/down conversion point is between subframe 3 and subframe 4.
Among the embodiment one, shown in dash area among Fig. 3, first sub-frame of uplink is the character position of the position of the long piece 1 of the subframe 1 transmission sounding pilot tone that is set to fix, the time interval of the last/down conversion point of character position distance of transmission sounding pilot tone farthest, when up-downgoing proportioning as shown in Figure 3 the time, on the distance/time interval of down conversion point is 1.95ms, satisfy the needs of scheduling time delay, here, on the distance/and the calculating in time interval of down conversion point and judge whether that the needs that satisfy the scheduling time delay belong to general knowledge as well known to those skilled in the art, this paper no longer describes in detail.
Need to prove, among the embodiment one, in subframe 1, also be not limited to be provided with the character position of the transmission sounding pilot tone that the position of first long piece is set to fix, the character position of the transmission sounding pilot tone that position that also can other long piece is set to fix.
Fig. 4 is the schematic diagram of frame structure embodiment two that is used to send the sounding pilot tone of corresponding tdd mode in the LTE of the present invention system, as shown in Figure 4, suppose that frame structure is the Alternative frame structure, the up-downgoing proportioning is: on/down conversion point is between subframe 3 and subframe 4.In frame, adopt the Random Access Channel (RACH, Random Access Channel) of lengthening and suppose that first sub-frame of uplink of RACH channel occupancy is the subframe 1 shown in Fig. 4 medium square.
Among the embodiment two, it can second sub-frame of uplink be the character position of a symbol of the subframe 2 transmission sounding pilot tone that is set to fix, shown in dash area among Fig. 4, the character position that sends the sounding pilot tone is set to first symbol of subframe 2, at this moment the time interval of the last/down conversion point of distance is 1.2ms, guarantee the long scheduling processing time, satisfied the needs of scheduling time delay.
Except two kinds of situations shown in the foregoing description one and the embodiment two, when the needs setting sends the sounding pilot tone more than the position of a symbol, should this character position be concentrated the front portion that is arranged on sub-frame of uplink as far as possible, be used for scheduling with the enough base stations of the time interval that guarantee the last/down conversion point of distance and handle.
Further, for support terminal has many transmit antennas, has only the situation of a power amplifier, antenna is set in sub-frame of uplink at least, and several send the character position of pilot tones, and guarantee between different character positions interval greater than or equal power amplifier and finish the time span that antenna switches.
Fig. 5 is the schematic diagram of frame structure embodiment three that is used to send the sounding pilot tone of corresponding tdd mode in the LTE of the present invention system, as shown in Figure 5, on the basis of embodiment one, suppose that the terminal of supporting in the LTE system has two transmit antennas, if switched antenna sends the sounding pilot tone, then increase the symbol that an antenna emission sounding is set, shown in the long piece 7 in the subframe 1 of character position shown in oblique grid among Fig. 5.Certainly, the character position that is used for sending pilot tone also be not limited to Fig. 5 shown in combination.
Step 201: in the mark-hold position of described sub-frame of uplink, send the sounding pilot tone.
The time that terminal is predesignated in the base station, in the mark-hold position of described sub-frame of uplink, send the sounding pilot tone.
In conjunction with the invention described above method, a kind of dispensing device also is provided, Fig. 6 is the composition schematic diagram of the embodiment of dispensing device of the present invention, as shown in Figure 6, comprises module and sending module are set;
The described module that is provided with is used at sub-frame of uplink the mark-hold position being set;
Described sending module is used for the pilot tone at described mark-hold position transmission sounding.
As seen the technical scheme that is provided by the invention described above embodiment is provided with the character position of fixing transmission sounding pilot tone in sub-frame of uplink, and sends the sounding pilot tone in the mark-hold position of described sub-frame of uplink.The method of the embodiment of the invention makes in adjacent base station or sub-district, and the character position that is used to send the sounding pilot tone is identical, avoided the mutual interference mutually of adjacent base station or minizone pilot tone and data, guaranteed the transmission quality of data; And, to fix owing to be used to send the character position of sounding pilot tone, the base station needn't be each when sending the sounding pilot tone, is used to send the character position of sounding pilot tone to the terminal indication, reduced the base station signaling consumption, saved resource.
Further, between described mark-hold position and the last/down conversion point interval greater than the base station to the scheduling processing delay of down channel, guaranteed/descending sub frame behind the down conversion point can in time utilize the information that obtains from the sounding pilot tone.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method that sends the sounding pilot tone is characterized in that, this method comprises:
The mark-hold position is set in sub-frame of uplink, in described mark-hold position, sends the sounding pilot tone.
2. method according to claim 1 is characterized in that, on described mark-hold position and the described sub-frame of uplink place frame/between the down conversion point interval greater than the base station to the scheduling processing delay of down channel.
3. method according to claim 1 and 2 is characterized in that, described mark-hold position is at least one.
4. method according to claim 1 and 2 is characterized in that, the described method that the mark-hold position is set is: first sub-frame of uplink is set to the mark-hold position.
5. method according to claim 4 is characterized in that, the method that described first sub-frame of uplink is set to the mark-hold position is: first long symbol position of described first sub-frame of uplink is set to the mark-hold position.
6. method according to claim 1 and 2, it is characterized in that, adopt the Random Access Channel RACH of lengthening in the frame of described sub-frame of uplink place, the described method that the mark-hold position is set is: the sub-frame of uplink that is right after described RACH channel is set to the mark-hold position.
7. method according to claim 6, it is characterized in that the method that the described sub-frame of uplink that is right after described RACH channel is set to the mark-hold position is: first long symbol position of first sub-frame of uplink of described RACH channel is set to the mark-hold position.
8. method according to claim 1 and 2 is characterized in that, described to send the sounding pilot tone in the mark-hold position be that terminal sends the sounding pilot tone in described mark-hold position;
Only there is a power amplifier in two or two above transmitting antennas of described terminal support and the system, the described method that the mark-hold position is set is: antenna is set in described sub-frame of uplink at least, and several send the character position of pilot tones, between described different character position interval greater than or equal power amplifier and finish the time span that antenna switches.
9. a dispensing device is characterized in that, comprises module and sending module are set;
The described module that is provided with is used at sub-frame of uplink the mark-hold position being set;
Described sending module is used for the pilot tone at described mark-hold position transmission sounding.
10. dispensing device according to claim 9 is characterized in that, on described mark-hold position and the described sub-frame of uplink place frame/between the down conversion point interval greater than the base station to the scheduling processing delay of down channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710095867 CN101286762B (en) | 2007-04-10 | 2007-04-10 | Method for transmitting sounding pilot and transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710095867 CN101286762B (en) | 2007-04-10 | 2007-04-10 | Method for transmitting sounding pilot and transmitting device |
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| Publication Number | Publication Date |
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| CN101286762A true CN101286762A (en) | 2008-10-15 |
| CN101286762B CN101286762B (en) | 2013-08-28 |
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| CN 200710095867 Expired - Fee Related CN101286762B (en) | 2007-04-10 | 2007-04-10 | Method for transmitting sounding pilot and transmitting device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800570A (en) * | 2009-02-05 | 2010-08-11 | 中兴通讯股份有限公司 | Method for obtaining channel quality indication (CQI) information |
| WO2010130209A1 (en) * | 2009-05-14 | 2010-11-18 | 大唐移动通信设备有限公司 | Method and apparatus for configuring and sending downlink measurement pilot frequency |
| WO2011020342A1 (en) * | 2009-08-18 | 2011-02-24 | 中兴通讯股份有限公司 | Method and system for sending channel measurement pilot frequency |
| CN102340801A (en) * | 2010-07-14 | 2012-02-01 | 中国移动通信集团公司 | Method for determining reference signal (RS) position and equipment thereof |
| CN102036376B (en) * | 2009-09-28 | 2013-11-06 | 电信科学技术研究院 | Acquisition method, indication method and device of measurement pilot CSI-RS (channel state information-reference signal) |
| CN103780529A (en) * | 2012-10-22 | 2014-05-07 | 展讯通信（上海）有限公司 | Communication system and signal sending method and apparatus as well as signal receiving method and apparatus thereof |
| CN104426627A (en) * | 2013-08-20 | 2015-03-18 | 北京久华信信息技术有限公司 | Method for transmitting uplink sounding reference signals in TDD system |
| CN106452715A (en) * | 2016-11-17 | 2017-02-22 | 北京润科通用技术有限公司 | Message scheduling method and device |
| WO2018027943A1 (en) * | 2016-08-12 | 2018-02-15 | 华为技术有限公司 | Communication method, base station and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20011782A1 (en) * | 2001-08-10 | 2003-02-10 | Marconi Comm Spa | METHOD FOR THE GENERATION OF A SYNCHRONIZED CLOCK WITH TEMPORAL REFERENCES DERIVED FROM INPUT SIGNALS IN A R EQUIPMENT |
| AU2003229569A1 (en) * | 2002-03-27 | 2003-10-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Control of frame timing on handover |
-
2007
- 2007-04-10 CN CN 200710095867 patent/CN101286762B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800570B (en) * | 2009-02-05 | 2013-11-06 | 中兴通讯股份有限公司 | Method for obtaining channel quality indication (CQI) information |
| CN101800570A (en) * | 2009-02-05 | 2010-08-11 | 中兴通讯股份有限公司 | Method for obtaining channel quality indication (CQI) information |
| WO2010130209A1 (en) * | 2009-05-14 | 2010-11-18 | 大唐移动通信设备有限公司 | Method and apparatus for configuring and sending downlink measurement pilot frequency |
| US8675516B2 (en) | 2009-05-14 | 2014-03-18 | China Academy Of Telecommunications Technology | Method and device for configuring and sending downlink CSI reference signal |
| US9313677B2 (en) | 2009-08-18 | 2016-04-12 | Zte Corporation | Method and system for sending a channel measurement reference signal |
| CN101997809B (en) * | 2009-08-18 | 2013-09-11 | 中兴通讯股份有限公司 | Channel measured pilot frequency transmitting method and system |
| RU2518493C2 (en) * | 2009-08-18 | 2014-06-10 | Зте Корпарейшен | Method and system for sending channel measurement reference signal |
| WO2011020342A1 (en) * | 2009-08-18 | 2011-02-24 | 中兴通讯股份有限公司 | Method and system for sending channel measurement pilot frequency |
| CN102036376B (en) * | 2009-09-28 | 2013-11-06 | 电信科学技术研究院 | Acquisition method, indication method and device of measurement pilot CSI-RS (channel state information-reference signal) |
| CN102340801A (en) * | 2010-07-14 | 2012-02-01 | 中国移动通信集团公司 | Method for determining reference signal (RS) position and equipment thereof |
| CN102340801B (en) * | 2010-07-14 | 2014-06-11 | 中国移动通信集团公司 | Method for determining reference signal (RS) position and equipment thereof |
| CN103780529A (en) * | 2012-10-22 | 2014-05-07 | 展讯通信（上海）有限公司 | Communication system and signal sending method and apparatus as well as signal receiving method and apparatus thereof |
| CN104426627A (en) * | 2013-08-20 | 2015-03-18 | 北京久华信信息技术有限公司 | Method for transmitting uplink sounding reference signals in TDD system |
| WO2018027943A1 (en) * | 2016-08-12 | 2018-02-15 | 华为技术有限公司 | Communication method, base station and system |
| CN109479265A (en) * | 2016-08-12 | 2019-03-15 | 华为技术有限公司 | Communication means, base station and system |
| CN109479265B (en) * | 2016-08-12 | 2020-10-23 | 华为技术有限公司 | Communication method, base station and system |
| CN106452715A (en) * | 2016-11-17 | 2017-02-22 | 北京润科通用技术有限公司 | Message scheduling method and device |
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| CN101286762B (en) | 2013-08-28 |
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