CN101179328B - Method and apparatus for configuring special time slot in TDD system - Google Patents
Method and apparatus for configuring special time slot in TDD system Download PDFInfo
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Abstract
The invention provides a deploying method and a device for deploying a special slot in a time division duplexing system. The method includes the following steps: confirming a group network scene, setting a short CP deploying proposal and a long CP deploying proposal for the group network scene and selecting a proportion proposal to form an LTE TDD special slot from the short CP deploying proposal and the long CP deploying proposal. The invention provides a plurality of deploying proposals for special slot concerning different scenes, thus causing an LTE system and a TD-SCDMA system and a TD-CDMA system realize coexistence of adjacent frequency better and causing the LTE TDD system transmit data with high efficiency when coexistence with the TD-SCDMA system does not occur.
Description
Technical field
The present invention relates to the communications field, collocation method and the device of special time slot in a kind of tdd systems.
Background technology
The frame structure of LTE (Long Term Evolution, Long Term Evolution) system TDD (Time DivisionDuplex, time division duplex) pattern, as shown in Figure 1.In this frame structure, the radio frames of a 10ms is divided into two fields, and it is 0.5ms time slot (numbering from 0 to 9) that each field is divided into 10 length, and two time slots are formed the subframe that length is 1ms, comprises 5 subframes (numbering from 0 to 4) in the field.Be the short CP (Cyclic Prefix, Cyclic Prefix) of 5.21us and 4.69us for length, the symbol that it is 66.7us that time slot comprises 7 length, wherein first symbol CP length is 5.21us, the CP length of all the other 6 symbols is 4.69us; Be the long CP of 16.67us for length, a time slot comprises 6 symbols.In addition, in this frame structure, the configuration characteristics of subframe are:
Subframe 0 is fixed for descending;
Subframe 1 (hereinafter referred to as special subframe) comprises 3 special time slots; be respectively DwPTS (Downlink Pilot Time Slot; descending pilot frequency time slot), GP (Guard Period, protection period) and UpPTS (Uplink Pilot Time Slot, uplink pilot time slot).Wherein,
↑ DwPTS is used for descending, and a minimum symbol is used for the transmission primary synchronization channel
P-SCH (Primary-Synchronization Channel, primary synchronization channel),
When DwPTS comprised a plurality of symbol, P-SCH was placed on (as shown in Figure 1) on first symbol;
↑ GP is guard time, does not transmit any data;
↑ UpPTS is used for up, can be used for transmission RACH (Random AccessChannel, Random Access Channel), data, signals such as sounding (detection) pilot tone.
Preceding n subframe of subframe 1 back is used for uplink (1≤n≤3), and a back 3-n subframe is used for downlink transfer.
Considering LTE TDD system and TD-SCDMA (Time-DivisionSynchronous Code Division Multiple Access, TD SDMA) system's (frame structure as shown in Figure 2) and TD-CDMA (Time-Division Code DivisionMultiple Access, when time division CDMA) system's (frame structure as shown in Figure 3) coexists, if on, the proportional arrangement of descending sub frame is unreasonable, perhaps three special time slot (DwPTS, GP and UpPTS) the time span unreasonable allocation, then LTE system and TD-SCDMA system can not realize adjacent frequency coexistence.
Summary of the invention
The present invention aims to provide collocation method and the device of special time slot in a kind of tdd systems, proportional arrangement with solution uplink and downlink subframe is unreasonable, the perhaps time span unreasonable allocation of three special time slots, then LTE system and TD-SCDMA system can not realize the problem of adjacent frequency coexistence.
According to an aspect of the present invention, provide the collocation method of special time slot in a kind of tdd systems, may further comprise the steps: the networking scene of determining tdd systems; Short CP allocation plan and the long CP allocation plan of networking scene are set; From short CP allocation plan and long CP allocation plan, select to form the ratio scheme of LTE TDD system special time slot.
According to another aspect of the present invention, provide the inking device of special time slot in a kind of tdd systems, having comprised: determination module, for the networking scene of determining tdd systems; Module is set, is used for arranging short CP allocation plan and the long CP allocation plan of networking scene; The proportioning module is used for from the ratio scheme of short CP allocation plan and long CP allocation plan selection composition LTE TDD system special time slot.
Pass through technique scheme, the present invention provides a few cover special time slot allocation plans at different scenes respectively, guaranteeing that LTE system and TD-SCDMA system and TD-CDMA system can better realize adjacent frequency coexistence, and with in the TD-SCDMA coexistence of systems can not make the transmission data of LTE TDD system high efficiency.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not constitute improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows LTE TDD system frame structure;
Fig. 2 shows the TD-SCDMA system frame structure;
Fig. 3 shows the TD-CDMA system frame structure;
Fig. 4 shows the flow chart according to the collocation method of special time slot in the tdd systems of the embodiment of the invention;
Fig. 5 shows the block diagram according to the inking device of special time slot in the tdd systems of the embodiment of the invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 4 shows the flow chart according to the collocation method of special time slot in the tdd systems of the embodiment of the invention, may further comprise the steps:
Step S10 determines the networking scene of tdd systems;
Step S20 arranges the short CP allocation plan of networking scene and long CP allocation plan;
Step S30, the ratio scheme of LTETDD system special time slot is formed in selection from short CP allocation plan and long CP allocation plan.
This method provides a few cover special time slot allocation plans at different scenes respectively, guaranteeing that LTE system and TD-SCDMA system and TD-CDMA system can better realize adjacent frequency coexistence, and with in the TD-SCDMA coexistence of systems can not make the transmission data of LTETDD system high efficiency.
Preferably, can determine following networking scene, and short CP allocation plan and the long CP allocation plan of described networking scene correspondingly are set:
Scene one: the independent networking of LTE TDD system or with upper and lower capable number of timeslots ratio be TD-SCDMA coexistence time of 4: 3
● the allocation plan of short CP
Scheme one
Scheme two
Scheme three
Scheme four
Scheme five
Scheme six
Scheme seven
During weak point CP, the allocation plan of scene one can be selected a kind of from such scheme.
● the allocation plan of long CP
Scheme one
Scheme two
Scheme three
Scheme four
During long CP, the allocation plan of scene one can be selected a kind of from such scheme.
Scene two: LTE TDD system and upper and lower capable number of timeslots ratio are the TD-SCDMA coexistence of 6: 1 or 3: 4
● the allocation plan of short CP
Scheme one
Scheme two
Scheme three
Scheme four
Scheme five
Scheme six
During weak point CP, the allocation plan of scene one can be selected a kind of from such scheme.
● the allocation plan of long CP
Scheme one
Scheme two
Scheme three
Scheme four
Scheme five
During long CP, the allocation plan of scene one can be selected a kind of from such scheme.
Scene three: LTE TDD system and upper and lower capable number of timeslots ratio are 2: 5 TD-SCDMA coexistence
● the allocation plan of short CP
Scheme one
Scheme two
Scheme three
Scheme four
During weak point CP, the allocation plan of scene one can be selected a kind of from such scheme.
● the allocation plan of long CP
Scheme one
Scheme two
During long CP, the allocation plan of scene one can be selected a kind of from such scheme.
Scene four: LTE TDD system and upper and lower capable number of timeslots ratio are 5: 2 TD-SCDMA coexistence
● the allocation plan of short CP
Scheme one
Scheme two
During weak point CP, the allocation plan of scene one can be selected a kind of from such scheme.
● the allocation plan of long CP
Scheme one
Scheme two
During long CP, the allocation plan of scene one can be selected a kind of from such scheme.
Scene five: when only being applied in the independent networking of LTE TDD system
● the allocation plan of short CP
Scheme one
Scheme two
Scheme three
During weak point CP, the allocation plan of scene one can be selected a kind of from such scheme.
● the allocation plan of long CP
Scheme one
Scheme two
Scheme three
During long CP, the allocation plan of scene one can be selected a kind of from such scheme.
Scene six: super large covering scene
● the allocation plan of short CP
Scheme one
Scheme two
During weak point CP, the allocation plan of scene one can be selected a kind of from such scheme.
● the allocation plan of long CP
Scheme one
Scheme two
During long CP, the allocation plan of scene one can be selected a kind of from such scheme.
Preferably, step S30 comprises:
To scene five, in each scene, select a kind of ratio scheme that CP scheme and a kind of long CP scheme are formed LTE TDD system special time slot of lacking for above-mentioned scene one; Or
To scene five and scene six, in each scene, select a kind of ratio scheme that CP scheme and a kind of long CP scheme are formed LTE TDD system special time slot of lacking for above-mentioned scene one; Or
To scene five, in each scene, select a kind of short CP scheme for above-mentioned scene one; And to scene five and scene six, in each scene, select a kind of long CP scheme to form the ratio scheme of LTE TDD system special time slot for above-mentioned scene one; Or
To scene four, in each scene, select a kind of ratio scheme that CP scheme and a kind of long CP scheme are formed LTE TDD system special time slot of lacking for above-mentioned scene one; Or
To scene four and scene six, in each scene, select a kind of ratio scheme that CP scheme and a kind of long CP scheme are formed LTE TDD system special time slot of lacking for above-mentioned scene one; Or
To scene four, in each scene, select a kind of short CP scheme for above-mentioned scene one; And to scene four and scene six, in each scene, select a kind of long CP scheme to form the ratio scheme of LTE TDD system special time slot for above-mentioned scene one.
Exemplify several embodiment below:
● for lacking CP:
Scene one selection scheme three
Scene two selection schemes four
Scene three selection schemes three
Scene four selection schemes two
Scene five selection schemes one
According to the configuration of the special time slot of as above select forming shown in table 1a
Table 1a
● for long CP
Scene one selection scheme two
Scene two selection schemes one
Scene three selection schemes one
Scene four selection schemes two
Scene five selection schemes three
According to the configuration of the special time slot of as above select forming shown in table 1b
Table 1b
● for short CP
Scene one selection scheme three
Scene two selection schemes six
Scene three selection schemes three
Scene four selection schemes two
Scene five selection schemes one
Scene six selection schemes one
According to the configuration of the special time slot of as above select forming shown in table 2a
Table 2a
● for long CP
Scene one selection scheme two
Scene two selection schemes two
Scene three selection schemes one
Scene four selection schemes two
Scene five selection schemes three
Scene six selection schemes one
According to the configuration of the special time slot of as above select forming shown in table 2b
Table 2b
● for short CP
Scene one selection scheme three
Scene two selection schemes four
Scene three selection schemes three
Scene four selection schemes two
Scene five selection schemes one
According to the configuration of the special time slot of as above select forming shown in table 3a
Table 3a
● for long CP
Scene one selection scheme two
Scene two selection schemes two
Scene three selection schemes one
Scene four selection schemes two
Scene five selection schemes three
Scene six selection schemes one
According to the configuration of the special time slot of as above select forming shown in table 3b
Table 3b
Fig. 5 shows the block diagram according to the inking device of special time slot in the tdd systems of the embodiment of the invention, comprising:
Pass through technique scheme, the present invention provides a few cover special time slot allocation plans at different scenes respectively, guaranteeing that LTE system and TD-SCDMA system and TD-CDMA system can better realize adjacent frequency coexistence, and with in the TD-SCDMA coexistence of systems can not make the transmission data of LTE TDD system high efficiency.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the collocation method of special time slot in the tdd systems is characterized in that, may further comprise the steps:
Determine the networking scene of described tdd systems;
Short cyclic prefix CP allocation plan and the long CP allocation plan of described networking scene are set;
From described short CP allocation plan and long CP allocation plan, select to form the ratio scheme of LTETDD system special time slot;
Wherein, the networking scene of determining described tdd systems comprises:
Scene one: LTE TDD system and upper and lower capable number of timeslots ratio are 4: 3 TD-SCDMA coexistence; Or
Scene two: LTE TDD system and upper and lower capable number of timeslots ratio are the TD-SCDMA coexistence of 6: 1 or 3: 4; Or
Scene three: LTE TDD system and upper and lower capable number of timeslots ratio are 2: 5 TD-SCDMA coexistence; Or
Scene four: LTE TDD system and upper and lower capable number of timeslots ratio are 5: 2 TD-SCDMA coexistence; Or
Scene five: the independent networking of LTE TDD system;
Wherein, described networking scene is scene one, and short CP allocation plan and long CP allocation plan that described networking scene is set specifically comprise:
The allocation plan of short CP
Scheme one
Descending pilot frequency time slot DwPTS (symbolic number) 10 9874
Protection period GP (symbolic number) 2345 10
Uplink pilot time slot UpPTS (symbolic number) 22220
Or, scheme two
DwPTS (symbolic number) 10 9 10 94
GP (symbolic number) 2345 10
UpPTS (symbolic number) 22000
Or, scheme three
DwPTS (symbolic number) 10 10 984
GP (symbolic number) 2345 10
UpPTS (symbolic number) 21110
Or, scheme four
DwPTS (symbolic number) 10 984
GP (symbolic number) 345 10
UpPTS (symbolic number) 1110
Or, scheme five
DwPTS (symbolic number) 10 10 983
GP (symbolic number) 2345 10
UpPTS (symbolic number) 21111
Or, scheme six
DwPTS (symbolic number) 10 983
GP (symbolic number) 345 10
UpPTS (symbolic number) 1111
Or, scheme seven
DwPTS (symbolic number) 10 9873
GP (symbolic number) 2345 10
UpPTS (symbolic number) 22221
The allocation plan of long CP
Scheme one
DwPTS (symbolic number) 9874
GP (symbolic number) 2348
UpPTS (symbolic number) 1110
Or, scheme two
DwPTS (symbolic number) 874
GP (symbolic number) 348
UpPTS (symbolic number) 110
Or, scheme three
DwPTS (symbolic number) 9873
GP (symbolic number) 2348
UpPTS (symbolic number) 1111
Or, scheme four
DwPTS (symbolic number) 873
GP (symbolic number) 348
UpPTS (symbolic number) 111.
2. collocation method according to claim 1 is characterized in that, described networking scene is scene two, and short CP allocation plan and long CP allocation plan that described networking scene is set specifically comprise:
The allocation plan of short CP
Scheme one
DwPTS (symbolic number) 1
GP (symbolic number) 2
UpPTS (symbolic number) 11
Or, scheme two
DwPTS (symbolic number) 1
GP (symbolic number) 3
UpPTS (symbolic number) 10
Or, scheme three
DwPTS (symbolic number) 11
GP (symbolic number) 23
UpPTS (symbolic number) 11 10
Or, scheme four
DwPTS (symbolic number) 1111
GP (symbolic number) 2345
UpPTS (symbolic number) 11 10 98
Or, scheme five
DwPTS (symbolic number) 11111
GP (symbolic number) 2345 10
UpPTS (symbolic number) 11 10 983
Or, scheme six
DwPTS (symbolic number) 111
GP (symbolic number) 234
UpPTS (symbolic number) 11 10 9
The allocation plan of long CP
Scheme one
DwPTS (symbolic number) 1111
GP (symbolic number) 2348
UpPTS (symbolic number) 9873
Or, scheme two
DwPTS (symbolic number) 111
GP (symbolic number) 234
UpPTS (symbolic number) 987
Or, scheme three
DwPTS (symbolic number) 11
GP (symbolic number) 23
UpPTS (symbolic number) 98
Or, scheme four
DwPTS (symbolic number) 1
GP (symbolic number) 2
UpPTS (symbolic number) 9
Or, scheme five
DwPTS (symbolic number) 1
GP (symbolic number) 3
UpPTS (symbolic number) 8.
3. collocation method according to claim 1 is characterized in that, described networking scene is scene three, and short CP allocation plan and long CP allocation plan that described networking scene is set specifically comprise:
The allocation plan of short CP
Scheme one
DwPTS (symbolic number) 65432
GP (symbolic number) 12345
UpPTS (symbolic number) 77777
Or, scheme two
DwPTS (symbolic number) 5432
GP (symbolic number) 2345
UpPTS (symbolic number) 7777
Or, scheme three
DwPTS (symbolic number) 65543
GP (symbolic number) 12345
UpPTS (symbolic number) 77666
Or, scheme four
DwPTS (symbolic number) 5543
GP (symbolic number) 2345
UpPTS (symbolic number) 7666
The allocation plan of long CP
Scheme one
DwPTS (symbolic number) 5432
GP (symbolic number) 1234
UpPTS (symbolic number) 6666
Or, scheme two
DwPTS (symbolic number) 432
GP (symbolic number) 234
UpPTS (symbolic number) 666.
4. collocation method according to claim 1 is characterized in that, described networking scene is scene four, and short CP allocation plan and long CP allocation plan that described networking scene is set specifically comprise:
The allocation plan of short CP
Scheme one
DwPTS (symbolic number) 65431
GP (symbolic number) 2345 10
UpPTS (symbolic number) 66663
Or, scheme two
DwPTS (symbolic number) 6543
GP (symbolic number) 2345
UpPTS (symbolic number) 6666
The allocation plan of long CP
Scheme one
DwPTS (symbolic number) 5431
GP (symbolic number) 2348
UpPTS (symbolic number) 5553
Or, scheme two
DwPTS (symbolic number) 543
GP (symbolic number) 234
UpPTS (symbolic number) 555.
5. collocation method according to claim 1 is characterized in that, described networking scene is scene five, and short CP allocation plan and long CP allocation plan that described networking scene is set specifically comprise:
The allocation plan of short CP
Scheme one
DwPTS (symbolic number) 11
GP (symbolic number) 1
UpPTS (symbolic number) 2
Or, scheme two
DwPTS (symbolic number) 11
GP (symbolic number) 2
UpPTS (symbolic number) 1
Or, scheme three
DwPTS (symbolic number) 12 11
GP (symbolic number) 12
UpPTS (symbolic number) 11
The allocation plan of long CP
Scheme one
DwPTS (symbolic number) 10
GP (symbolic number) 1
UpPTS (symbolic number) 1
Or, scheme two
DwPTS (symbolic number) 9
GP (symbolic number) 1
UpPTS (symbolic number) 2
Or, scheme three
DwPTS (symbolic number) 98
GP (symbolic number) 12
UpPTS (symbolic number) 22.
6. according to each described collocation method of claim 1 to 5, it is characterized in that the ratio scheme of selecting to form LTE TDD system special time slot specifically comprises from described short CP allocation plan and long CP allocation plan:
To scene four, in each scene, select a kind of CP of weak point scheme and a kind of long CP scheme to form the ratio scheme of described LTE TDD system special time slot for described scene one.
7. collocation method according to claim 6 is characterized in that, the ratio scheme of selecting to form LTE TDD system special time slot from described short CP allocation plan and long CP allocation plan also comprises:
For scene five, in each scene, select a kind of CP of weak point scheme and a kind of long CP scheme to form the ratio scheme of described LTE TDD system special time slot.
8. the inking device of special time slot in the tdd systems is characterized in that, comprising:
Determination module is for the networking scene of determining described tdd systems;
Module is set, is used for arranging short cyclic prefix CP allocation plan and the long CP allocation plan of described networking scene;
The proportioning module is used for from the ratio scheme of described short CP allocation plan and long CP allocation plan selection composition LTE TDD system special time slot;
Wherein, the networking scene of determining described tdd systems comprises:
Scene one: LTE TDD system and upper and lower capable number of timeslots ratio are 4: 3 TD-SCDMA coexistence; Or
Scene two: LTE TDD system and upper and lower capable number of timeslots ratio are the TD-SCDMA coexistence of 6: 1 or 3: 4; Or
Scene three: LTE TDD system and upper and lower capable number of timeslots ratio are 2: 5 TD-SCDMA coexistence; Or
Scene four: LTE TDD system and upper and lower capable number of timeslots ratio are 5: 2 TD-SCDMA coexistence; Or
Scene five: the independent networking of LTE TDD system;
Wherein, described networking scene is scene one, and short CP allocation plan and long CP allocation plan that described networking scene is set specifically comprise:
The allocation plan of short CP
Scheme one
Descending pilot frequency time slot DwPTS (symbolic number) 10 9874
Protection period GP (symbolic number) 2345 10
Uplink pilot time slot UpPTS (symbolic number) 22220
Or, scheme two
DwPTS (symbolic number) 10 9 10 94
GP (symbolic number) 2345 10
UpPTS (symbolic number) 22000
Or, scheme three
DwPTS (symbolic number) 10 10 984
GP (symbolic number) 2345 10
UpPTS (symbolic number) 21110
Or, scheme four
DwPTS (symbolic number) 10 984
GP (symbolic number) 345 10
UpPTS (symbolic number) 1110
Or, scheme five
DwPTS (symbolic number) 10 10 983
GP (symbolic number) 2345 10
UpPTS (symbolic number) 21111
Or, scheme six
DwPTS (symbolic number) 10 983
GP (symbolic number) 345 10
UpPTS (symbolic number) 1111
Or, scheme seven
DwPTS (symbolic number) 10 9873
GP (symbolic number) 2345 10
UpPTS (symbolic number) 22221
The allocation plan of long CP
Scheme one
DwPTS (symbolic number) 9874
GP (symbolic number) 2348
UpPTS (symbolic number) 1110
Or, scheme two
DwPTS (symbolic number) 874
GP (symbolic number) 348
UpPTS (symbolic number) 110
Or, scheme three
DwPTS (symbolic number) 9873
GP (symbolic number) 2348
UpPTS (symbolic number) 1111
Or, scheme four
DwPTS (symbolic number) 873
GP (symbolic number) 348
UpPTS (symbolic number) 111.
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| US8472465B2 (en) | 2007-11-02 | 2013-06-25 | China Academy Of Telecommunications Technology | Method and an apparatus for determining the radio frame structure of time division duplex system |
| CN101888699B (en) * | 2009-05-13 | 2013-04-03 | 电信科学技术研究院 | Method for adjusting time slot configuration |
| CN102404850B (en) * | 2010-09-07 | 2014-09-10 | 中国移动通信集团设计院有限公司 | Configuration method and configuration device for special time slots in long term evolution (LTE) system |
| CN103188795B (en) * | 2011-12-28 | 2016-01-20 | 中国移动通信集团北京有限公司 | A kind of method and apparatus promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity |
| CN104756421B (en) * | 2012-10-29 | 2018-06-08 | Lg电子株式会社 | For receiving and dispatching the method for TDD and user equipment |
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| CN1941687A (en) * | 2005-09-29 | 2007-04-04 | 华为技术有限公司 | Method for duplicating broadcasting service channel and non-broadcasting service channel |
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| CN101001233A (en) * | 2006-01-12 | 2007-07-18 | 北京三星通信技术研究有限公司 | Method and equipment for transmitting downlink synchronous channel |
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| CN1993955A (en) * | 2004-06-04 | 2007-07-04 | 高通股份有限公司 | Wireless communication system with configurable cyclic prefix length |
| CN1941687A (en) * | 2005-09-29 | 2007-04-04 | 华为技术有限公司 | Method for duplicating broadcasting service channel and non-broadcasting service channel |
| CN101001234A (en) * | 2006-01-10 | 2007-07-18 | 中兴通讯股份有限公司 | Method for sending signal by orthogonal frequency division multiplex system and method of cell search |
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