CN101159479B - Method of confecting special time slot in TDD system - Google Patents

Method of confecting special time slot in TDD system Download PDF

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CN101159479B
CN101159479B CN 200710169448 CN200710169448A CN101159479B CN 101159479 B CN101159479 B CN 101159479B CN 200710169448 CN200710169448 CN 200710169448 CN 200710169448 A CN200710169448 A CN 200710169448A CN 101159479 B CN101159479 B CN 101159479B
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uppts
dwpts
ratio
scdma
time slot
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CN101159479A (en
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郝鹏
夏树强
梁春丽
戴博
郁光辉
胡留军
喻斌
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ZTE Corp
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Abstract

A configuration method of a special time slot in a time division duplex system includes the steps as: ensuring that the total length of DwPTS, GP and UpPTS is equal to 1,000 Mu s; then, considering the conditions 1, 3 or 1, 2, 3 and 4 when various uplink and downlink time slot ratios in the LTE system and the TD-SCDMA system coexist, and determine the length of DwPTS, GP and UpPTS; in order to meet the requirements of different length of GP, setting the length of GP according to the set rule; and adjusting the length of UpPTS. The method can realize the adjacent-frequency coexistence of the LTE system and the TD-SCDMA system better, and allow the LTE TDD system to efficiently deliver data without the coexistence with the TD-SCDMA system.

Description

A kind of collocation method of special time slot in TDD system
Technical field
The present invention relates to moving communicating field, particularly relate to the collocation method of tdd systems special time slot.
Background technology
The frame structure of LTE ((Long Term Evolution)) system TDD (Time Division Duplex) pattern, as shown in Figure 2.In this frame structure, the radio frames of a 10ms is divided into two fields, it is 0.5ms time slot (numbering from 0 to 9) that each field is divided into 10 length, and two time slots form the subframe that length is 1ms, comprises 5 subframes (numbering from 0 to 4) in a field.Be the short CP (Cyclic Prefix) of 5.21 μ s and 4.69 μ s for length, the symbol that it is 66.7 μ s that time slot comprises 7 length, wherein first symbol CP length is 5.21 μ s, the CP length of all the other 6 symbols is 4.69 μ s; Be the long CP of 16.67 μ s 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, is respectively DwPTS (Downlink Pilot Time Slot), GP (Guard Period) and UpPTS (Uplink Pilot Time Slot).Wherein,
Figure DEST_PATH_GSB00000970391400011
DwPTS is used for descending, and a minimum symbol is used for transmission primary synchronization channel P-SCH (Primary-Synchronization CHannel), and when DwPTS comprised a plurality of symbol, P-SCH was placed on (as shown in Figure 2) on first symbol;
Figure DEST_PATH_GSB00000970391400012
GP is guard time, does not transmit any data;
UpPTS is used for up, can be used for transmission RACH (Random Access CHannel) channel, data, the signals (as shown in Figure 2) such as sounding (detection) pilot tone.
Front n subframe of ↑ subframe 1 back is used for uplink (1≤n≤3), and a rear 3-n subframe is used for downlink transfer;
LTE system (tdd mode, its frame structure is as shown in Figure 2) when coexisting with TD-SCDMA system (its frame structure is as shown in Figure 1) and being in successive bands, the adjacent problem of frequently disturbing can appear, namely when the UpPTS (or DwPTS) of the DwPTS (or UpPTS) of LTE and TD-SCDMA has overlapping (as shown in Fig. 3,4), the signal that LTE (or TD-SCDMA) base station sends can produce the reception signal of TD-SCDMA (or LTE) base station and disturb.In addition, if the DwPTS of LTE (or UpPTS) extends in the GP of TD-SCDMA (as shown in Fig. 5,6), just be equivalent to shorten the GP length of TD-SCDMA (or LTE), at this moment, the transmitted signal of adjacent with TD-SCDMA (LTE) base station LTE (TD-SCDMA) base station may produce the reception signal of this TD-SCDMA (LTE) base station and disturb.So, in order to realize the adjacent frequency coexistence of LTE system (tdd mode) and TD-SCDMA system, the uplink and downlink subframe ratio that not only needs reasonable disposition LTE system also needs the certain method of basis to configure the time span of three special time slots (DwPTS, GP and UpPTS).
Summary of the invention
In order to address the above problem, the invention provides a kind of collocation method of special time slot in TDD system, the method can realize that LTE system and TD-SCDMA 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.
The collocation method of a kind of special time slot in TDD system of the present invention comprises the following steps:
A, guarantee that the length sum of DwPTS, GP and UpPTS is 1000 μ s;
B, when the various uplink and downlink time slot ratios of LTE system and TD-SCDMA system coexist, should meet the following conditions simultaneously (1), (3) or (1), (2), (3), (4):
(1) UpPTS of LTE can not have the part that overlaps with the DwPTS of TD-SCDMA;
(2) UpPTS of LTE does not surpass the UpPTS of TD-SCDMA and extends in the GP of TD-SCDMA system;
(3) DwPTS of LTE can not have the part that overlaps with the UpPTS of TD-SCDMA;
(4) DwPTS of LTE does not surpass the DwPTS of TD-SCDMA and extends in the GP of TD-SCDMA system;
C, determine to be applied in the configuration under the various scenes that coexist, thisly be configured to lower condition and determine:
If c1 is less than or equal to 2 symbols in the length M of the UpPTS that step B determines, in large the covering, can
(1) making the length of UpPTS is 0 symbol, and for DwPTS increases M symbol, or
(2) making the length of UpPTS is 1 symbol, and is M-1 symbol of DwPTS increase;
If the length M of the UpPTS that c2 determines at step B keeps the length of UpPTS greater than 2 symbols.
Wherein, when needs satisfy different GP length requirement, satisfy by the mode of destroying the DwPTS symbol, after DwPTS length reached minimum value, in the time of still can not satisfying a certain GP length requirement, then the mode that begins to destroy the symbol of UpPTS satisfied.
Further, for the condition that satisfies above-mentioned steps B (1), (2), (3), (4), and when satisfying the condition (1) of above-mentioned steps c1, the maximum number N that configures is 16, kind for the system configuration GP of short CP is 1,2,3,4,5,10,13, is 1,2,3,4,8,11 for the kind of the system configuration GP of long CP, and the DwPTS minimum is a symbol, during the large covering scene of GP＞3
When the LTE system will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio time, for short CP, the proportional arrangement of DwPTS: GP: UpPTS be one of 10: 2: 2,9: 3: 2,10: 4: 0,9: 5: 0,4: 10: 0,1: 13: 0; For long CP, the proportional arrangement of DwPTS: GP: UpPTS is one of 9: 3: 0,8: 4: 0,4: 8: 0,1: 11: 0; Or
When the LTE system will with the uplink and downlink time slot ratio be 6: 1 or 3: 4 the TD-SCDMA coexistence of systems the time, for short CP, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 13: 0; For long CP, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 11: 0; Or
When the LTE system will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 2: 6,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 13: 0; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 11: 0; Or
When the LTE system will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 5: 2: 7,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 13: 0; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 11: 0.
Further, for the condition that satisfies above-mentioned steps B (1), (2), (3), (4), and when satisfying above-mentioned steps c2, the maximum number N that configures is 16, kind for the system configuration GP of short CP is 1,2,3,4,5,10,13, is 1,2,3,4,8,11 for the kind of the system configuration GP of long CP, and the DwPTS minimum is a symbol, during the large covering scene of GP＞3
When the LTE system will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 10: 3: 1,9: 4: 1,8: 5: 1,3: 10: 1,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 9: 2: 1,8: 3: 1,7: 4: 1,3: 8: 1,1: 10: 1:
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, for short CP, the ratio of DwPTS: GP: UpPTS was one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 2: 6,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 5: 2: 7,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 10: 1.
Further, for the condition that satisfies above-mentioned steps B (1), (3), and satisfy condition c2 in above-mentioned steps C, the maximum number N that configures is 16, kind for the system configuration GP of short CP is 1,2,3,4,5,10,13, is 1,2,3,4,8,11 for the kind of the system configuration GP of long CP, and the DwPTS minimum is a symbol, during the large covering scene of GP＞3
When the LTE system will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 11: 2: 1,10: 3: 1,9: 4: 1,8: 5: 1,3: 10: 1,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 10: 1: 1,9: 2: 1,8: 3: 1,7: 4: 1,3: 8: 1,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, for short CP, the ratio of DwPTS: GP: UpPTS was one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 1: 1: 10,1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 1: 7,5: 2: 7,4: 3: 7,3: 4: 7,2: 5: 7,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 6: 1: 5,5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 1: 7,5: 2: 7,4: 3: 7,3: 4: 7,2: 5: 7,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 10: 1.
Wherein, be the configuration of the TD-SCDMA coexistence of systems of 4: 3 for using LTE and uplink and downlink time slot ratio, in the large scene (as GP＞3) that covers, the length of UpPTS is 0 or 1;
When the configuration in the time of will being the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio is applied in non-existent scene, the configuration that does not coexist with TD-SCDMA for LTE, the length of UpPTS is 0 or 1.
Wherein, in the situation that guarantee that total configurable number is no more than N, can go fine setting to the configuration of above-mentioned various scenes, make the part scene that identical configuration be arranged, but the condition need to meet step 2 when finely tuning in.
Wherein, when the LTE system during not with the TD-SCDMA coexistence of systems, one group of DwPTS, GP when selection will coexist under a certain scene and the configuration of the length of UpPTS are applied in situation about not coexisting, if configuration this moment sum does not surpass maximum, can increase the GP length that this assembly does not comprise in putting, until the configuration sum reaches maximum.
The present invention can reduce the interference between LTE system and TD-SCDMA system to greatest extent, improves GP flexibility and the data transmission quality of LTE system.Not only can realize effectively coexisting of LTE system and TD-SCDMA system, and when two systems do not coexist, can guarantee that there is higher operating efficiency in the LTE system.
Description of drawings
The frame structure of Fig. 1 TD-SCDMA;
The frame structure of Fig. 2 LTE system TDD mode;
The UpPTS of the DwPTS of Fig. 3 LTE system and TD-SCDMA system has overlapping;
The DwPTS of the UpPTS of Fig. 4 LTE system and TD-SCDMA system has overlapping;
The DwPTS of Fig. 5 LTE system extends in the GP of TD-SCDMA system
The UpPTS of Fig. 6 LTE system extends in the GP of TD-SCDMA system
Fig. 7 flow chart of the invention process
Embodiment
The present invention proposes a kind of collocation method of special time slot in TDD system, the method can realize that LTE system and TD-SCDMA 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.
Please refer to Fig. 7.
The collocation method of a kind of special time slot in TDD system of the present invention comprises:
If 1 makes Tdw, Tgp and Tup represent respectively the length of DwPTS, GP and UpPTS, should guarantee Tgp+Tup+Tdw=1000 μ s;
2, considering that LTE system and the various uplink and downlink time slot ratios of TD-SCDMA system coexist in (corresponding to the various scenes that coexist), (1) (3) or (1) (2) (3) (4) below should satisfying simultaneously:
(1) UpPTS of LTE can not have the part that overlaps with the DwPTS of TD-SCDMA;
(2) UpPTS of LTE does not surpass the UpPTS of TD-SCDMA and extends in the GP of TD-SCDMA system;
(3) DwPTS of LTE can not have the part that overlaps with the UpPTS of TD-SCDMA;
(4) DwPTS of LTE does not surpass the DwPTS of TD-SCDMA and extends in the GP of TD-SCDMA system;
Minimum GP length when should be satisfied (1) and (3) or satisfying (1), (2), (3), (4) by the confirmable GP length of step 2.
3, for the configuration under the various scenes that coexist of being applied in that obtains by step 1, step 2, should satisfy by the mode of preferentially destroying the DwPTS symbol different GP length requirement, after DwPTS length reaches minimum value, in the time of still can not satisfying a certain GP length requirement, then begin to beat the symbol of UpPTS.The purpose of doing like this is to guarantee the up better transmission quality that has.
Wherein, the kind of GP length can provide in standard.
The shortest GP length when having provided due to step 2 that every kind of scene coexists is so the GP of the configuration that is applied in corresponding scene that the GP length of the various configurations that step 3 is determined can only be determined than step 2 is long.
4, for the configuration under the various scenes that coexist of being applied in that obtains by step 1, step 2, step 3,
Figure DEST_PATH_GSB00000970391400031
If the length M of the UpPTS that determines in step 2 is less than or equal to 2 symbols, in large the covering (such as GP length greater than 3 symbols) can
(1) making the length of UpPTS is 0 symbol, and for DwPTS increases M symbol, or
(2) making the length of UpPTS is 1 symbol, and is M-1 symbol of DwPTS increase.
This is no matter to be used for passing data due to short UpPTS, still is used for passing accidental access signal and all can not supports large covering, thus its length is set to 0 symbol, thus lengthen the length of DwPTS, facilitate resource to distribute.Or its length is set to 1 symbol is used for transmitting sounding (detection) pilot tone.
Figure GSB00000901396100081
If the length M of the UpPTS that determines in step 2 keeps the length of UpPTS greater than 2 symbols.
5, for various scenes, in the situation that guarantee that total configurable number is no more than N, can suitably to finely tuning (condition during fine setting in step 2 can not be run counter to) by some configurations of determining in above-mentioned steps 1-4, make the part scene that identical configuration be arranged.Do like this when LTE and various TD-SCDMA time slot ratio are coexisted, better GP flexibility is arranged;
6, when the LTE system during not with the TD-SCDMA coexistence of systems, can select one group of DwPTS, GP under a certain scene and the length configuration (this assembly is put corresponding to the various GP length under this scene) of UpPTS.At this moment, if the configuration sum does not surpass maximum, can increase GP length that this assembly do not comprise in putting (because step 2 has limited the shortest GP length, so be not that all GP length that provide in standard can obtain by step 3), until the configuration sum reaches maximum, in order to increase the flexibility of the LTE GP of system when not coexisting.
For the thought of foregoing invention better is described, the below provides three specific embodiments.In these three embodiment, the maximum number N of configuration is 16; For the system configuration of short CP, the kind of GP is 1,2,3,4,5,10,13, is 1,2,3,4,8,11 for the kind of the system configuration GP of long CP.In addition, in order to guarantee can to transmit master sync signal in DwPTS, the DwPTS minimum is a symbol, GP＞3 correspondences be large covering scene.
Embodiment one
For the condition that satisfies above-mentioned steps 2 (1), (2), (3), (4), and satisfy the condition (1) of above-mentioned steps 4 even the length of UpPTS is 0 symbol, and be M symbol of DwPTS increase:
● for short CP
Figure GSB00000901396100082
When the LTE system when will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 10: 2: 2,9: 3: 2,10: 4: 0,9: 5: 0,4: 10: 0,1: 13: 0
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 13: 0
Figure GSB00000901396100092
When the LTE system when will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 6: 2: 6,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 13: 0
Figure GSB00000901396100093
When the LTE system when will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio.Under this scene, from the 2nd, 4 of summary of the invention, should select these several configurations in 5: 2: 7,4: 3: 7,3: 4: 7,2: 5: 7,1: 10: 3,1: 13: 0, but in order to guarantee that configuring sum is no more than 16, and can obtain again GP flexibility preferably (be summary of the invention the 6th) under various scenes, so select one of these several configurations in 5: 2: 7,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 13: 0.Like this, except first configuration was different from 5: 2 scenes, other configuration was all identical.
Figure GSB00000901396100094
For the scene that does not coexist with TD-SCDMA, we then increase the flexibility that is configured to better increase GP of 6: 1: 7 except selecting one of these several configurations in 5: 2: 7,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 13: 0.
Figure GSB00000901396100095
Above-mentioned configuration has 17 kinds, has surpassed 16, so we delete the configuration of 1: 4: 9, forms the configuration result of table 1a.
Table 1a
Figure GSB00000901396100096
Figure GSB00000901396100101
● for long CP
When the LTE system will be with upper. when the descending time slot ratio is the TD-SCDMA coexistence of systems of 4: 3, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 9: 3: 0,8: 4: 0,4: 8: 0,1: 11: 0
Figure GSB00000901396100103
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 11: 0
Figure GSB00000901396100104
When the LTE system when will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 11: 0
Figure GSB00000901396100105
When the LTE system when will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 11: 0
Figure GSB00000901396100111
For the scene that does not coexist with TD-SCDMA, we one of selected 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 11: 0 (identical when coexist at 2: 5 configuration), can guarantee to greatest extent the flexibility of GP like this, can make again total configurable number be no more than 16;
Figure GSB00000901396100112
Above-mentioned configuration has 16 kinds, forms the configuration result of table 1b.
Table 1b
Embodiment two
For the condition that satisfies above-mentioned steps 2 (1), (2), (3), (4), and satisfy the condition (2) of above-mentioned steps 4 even the length of UpPTS is 1 symbol, and be M-1 symbol of DwPTS increase:
● for short CP
Figure GSB00000901396100121
When the LTE system when will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 10: 3: 1,9: 4: 1,8: 5: 1,3: 10: 1,1: 12: 1
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 12: 1
Figure GSB00000901396100123
When the LTE system when will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 6: 2: 6,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 12: 1
Figure GSB00000901396100124
When the LTE system when will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio.Under this scene, from the 2nd, 4 of summary of the invention, should select one of these several configurations in 5: 2: 7,4: 3: 7,3: 4: 7,2: 5: 7,1: 10: 3,1: 12: 1, but in order to guarantee that configuring sum is no more than 16, and can obtain again GP flexibility preferably (be summary of the invention the 6th) under various scenes, so select one of these several configurations in 5: 2: 7,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 12: 1.Like this, except first configuration was different from 5: 2 scenes, other configuration was all identical.
Figure GSB00000901396100125
For the scene that does not coexist with TD-SCDMA, we then increase by 12: 1: 1 and two kinds of configurations in 11: 2: 1 except selecting one of these several configurations in 10: 3: 1,9: 4: 1,8: 5: 1,3: 10: 1,1: 12: 1, with the flexibility of better increase GP.
Figure GSB00000901396100126
Above-mentioned configuration has 17 kinds, has surpassed 16, so we delete the configuration of 1: 4: 9, forms the configuration result of table 2a.
Table 2a
Figure GSB00000901396100127
Figure GSB00000901396100131
● for long CP
Figure GSB00000901396100132
When the LTE system when will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 9: 2: 1,8: 3: 1,7: 4: 1,3: 8: 1,1: 10: 1
Figure GSB00000901396100133
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 10: 1
Figure GSB00000901396100134
When the LTE system when will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 10: 1
When the LTE system when will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 10: 1
Figure GSB00000901396100142
For the scene that does not coexist with TD-SCDMA, we have two kinds of selections:
↑ except selecting 9: 2: 1,8: 3: 1,7: 4: 1,3: 8: 1,1: 10: 1 one of (identical configuration is arranged when coexist at 4: 3), increase again the configuration of 10: 1: 1, can guarantee to greatest extent the flexibility of GP like this, can make again total configurable number be no more than 16, be summarised in table 2b based on the result of this selection; Or
↑ one of selected 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 10: 1 (identical configuration is arranged when coexist at 2: 5), be summarised in table 2c based on the result of this selection;
Table 2b
Figure GSB00000901396100143
Figure GSB00000901396100151
Table 2c
Figure GSB00000901396100152
Embodiment three
For the condition that satisfies above-mentioned steps 2 (1), (3), and satisfy the condition (2) of above-mentioned steps 4 even the length of UpPTS is 1 symbol, and be M-1 symbol of DwPTS increase:
● for short CP
Figure GSB00000901396100161
When the LTE system when will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 11: 2: 1,10: 3: 1,9: 4: 1,8: 5: 1,3: 10: 1,1: 12: 1
Figure GSB00000901396100162
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 12: 1
Figure GSB00000901396100163
When the LTE system will be the TD-SCDMA coexistence of systems of 5: 2 or 2: 5 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 6: 1: 7,5: 2: 7,4: 3: 7,3: 4: 7,2: 5: 7,1: 10: 3,1: 12: 1
Figure GSB00000901396100164
For the scene that does not coexist with TD-SCDMA, we select the configuration identical with 5: 2 or 2: 5
Figure GSB00000901396100165
Above-mentioned configuration has 16 kinds, always has in table 3a.
Table 3a
Figure GSB00000901396100171
● for long CP
Figure GSB00000901396100172
When the LTE system when will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 10: 1: 1,9: 2: 1,8: 3: 1,7: 4: 1,3: 8: 1,1: 10: 1
Figure GSB00000901396100173
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 1: 1: 10,1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 10: 1
Figure GSB00000901396100174
When the LTE system when will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 6: 1: 5,5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 10: 1
When the LTE system when will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio, consider the foregoing invention content, can obtain under this scene, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 10: 1;
Figure GSB00000901396100176
For the scene that does not coexist with TD-SCDMA, we select configuration identical when coexist at 2: 5;
19 kinds of above-mentioned configuration sums have surpassed 16, so we are with the configuration deletion of 10: 1: 1,1: 1: 10 and 6: 1: 5, the configuration of composition is summarised in table 3b
Table 3b
Figure GSB00000901396100181
For the configuration result of above-mentioned three embodiment, a common feature is arranged, namely
● for the configuration that is applied to " LTE and uplink and downlink time slot ratio are the TD-SCDMA coexistence of systems of 4: 3 ", in the large scene (as GP＞3) that covers, the length of UpPTS is 0 or 1;
● if the configuration in the time of will being the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio is applied in non-existent scene, and for the configuration of " LTE does not coexist with TD-SCDMA ", the length of UpPTS is 0 or 1.
The above is only embodiments of the invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.

Claims (9)

1. the collocation method of a special time slot in TDD system comprises the following steps:
A, guarantee that the length sum of DwPTS, GP and UpPTS is 1000 μ s;
B, when the various uplink and downlink time slots of various uplink and downlink time slots and TD-SCDMA system of LTE system coexist, should meet the following conditions simultaneously (1), (3) or (1), (2), (3), (4):
(1) UpPTS of LTE can not have the part that overlaps with the DwPTS of TD-SCDMA;
(2) UpPTS of LTE does not surpass the UpPTS of TD-SCDM A and extends in the GP of TD-SCDMA system;
(3) DwPTS of LTE can not have the part that overlaps with the UpPTS of TD-SCDMA;
(4) DwPTS of LTE does not surpass the DwPTS of TD-SCDMA and extends in the GP of TD-SCDMA system;
C, determine to be applied in the configuration under the various scenes that coexist, wherein, the configuration that is applied under the various scenes that coexist is determined by following condition:
If c1 is less than or equal to 2 symbols in the length M of the UpPTS that step B determines, large cover GP＞3 in, can
(1) making the length of UpPTS is 0 symbol, and for DwPTS increases M symbol, or
(2) making the length of UpPTS is 1 symbol, and is M-1 symbol of DwPTS increase;
If the length M of the UpPTS that c2 determines at step B keeps the length of UpPTS greater than 2 symbols.
2. method according to claim 1, it is characterized in that: when needs satisfy different GP length requirement, satisfy by the mode of destroying the DwPTS symbol, after DwPTS length reaches minimum value, in the time of still can not satisfying a certain GP length requirement, then the mode that begins to destroy the symbol of UpPTS satisfies.
3. method according to claim 2, it is characterized in that: further, for the condition that satisfies above-mentioned steps B (1), (2), (3), (4), and when satisfying the condition (1) of above-mentioned steps c1, the maximum number N of the time slot that configures is 16, kind for the system configuration GP of short CP is 1,2,3,4,5,10,13, kind for the system configuration GP of long CP is 1,2,3,4,8,11, the DwPTS minimum is a symbol, during the large covering scene of GP＞3
When the LTE system will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio time, for short CP, the proportional arrangement of DwPTS: GP: UpPTS be one of 10: 2: 2,9: 3: 2,10: 4: 0,9: 5: 0,4: 10: 0,1: 13: 0; For long CP, the proportional arrangement of DwPTS: GP: UpPTS is one of 9: 3: 0,8: 4: 0,4: 8: 0,1: 11: 0; Or
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, for short CP, the ratio of DwPTS: GP: UpPTS was one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 13: 0; For long CP, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 11: 0; Or
When the LTE system will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 2: 6,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 13: 0; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 11: 0; Or
When the LTE system will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 5: 2: 7,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 13: 0; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 11: 0.
4. method according to claim 2, it is characterized in that: further, for the condition that satisfies above-mentioned steps B (1), (2), (3), (4), and when satisfying above-mentioned steps c2, the maximum number N of the time slot that configure is 16, is 1,2,3,4,5,10,13 for the kind of the system configuration GP of short CP, kind for the system configuration GP of long CP is 1,2,3,4,8,11, the DwPTS minimum is a symbol, during the large covering scene of GP＞3
When the LTE system will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 10: 3: 1,9: 4: 1,8: 5: 1,3: 10: 1,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 9: 2: 1,8: 3: 1,7: 4: 1,3: 8: 1,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, for short CP, the ratio of DwPTS: GP: UpPTS was one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 2: 6,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 5: 2: 7,5: 3: 6,4: 4: 6,3: 5: 6,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 10: 1.
5. method according to claim 2, it is characterized in that: further, for the condition that satisfies above-mentioned steps B (1), (3), and satisfying condition c2 in above-mentioned steps C, the maximum number N of the time slot that configure is 16, is 1,2,3,4,5,10,13 for the kind of the system configuration GP of short CP, kind for the system configuration GP of long CP is 1,2,3,4,8,11, the DwPTS minimum is a symbol, during the large covering scene of GP＞3
When the LTE system will be the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 11: 2: 1,10: 3: 1,9: 4: 1,8: 5: 1,3: 10: 1,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 10: 1: 1,9: 2: 1,8: 3: 1,7: 4: 1,3: 8: 1,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 6: 1 or 3: 4 with the uplink and downlink time slot ratio, for short CP, the ratio of DwPTS: GP: UpPTS was one of 1: 2: 11,1: 3: 10,1: 4: 9,1: 5: 8,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 1: 1: 10,1: 2: 9,1: 3: 8,1: 4: 7,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 5: 2 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 1: 7,5: 2: 7,4: 3: 7,3: 4: 7,2: 5: 7,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 6: 1: 5,5: 2: 5,4: 3: 5,3: 4: 5,1: 8: 3,1: 10: 1;
When the LTE system will be the TD-SCDMA coexistence of systems of 2: 5 with the uplink and downlink time slot ratio time, for short CP, the ratio of DwPTS: GP: UpPTS be one of 6: 1: 7,5: 2: 7,4: 3: 7,3: 4: 7,2: 5: 7,1: 10: 3,1: 12: 1; For long CP, the ratio of DwPTS: GP: UpPTS is one of 5: 1: 6,4: 2: 6,3: 3: 6,2: 4: 6,1: 8: 3,1: 10: 1.
6. one of according to claim 3-5 described method is characterized in that:
Be the configuration of the TD-SCDMA coexistence of systems of 4: 3 for using LTE and uplink and downlink time slot ratio, in the large scene that covers, wherein, the scene of described large covering is GP＞3, and the length of UpPTS is 0 or 1;
When the configuration in the time of will being the TD-SCDMA coexistence of systems of 4: 3 with the uplink and downlink time slot ratio is applied in the scene that does not coexist, the configuration that does not coexist with TD-SCDMA for LTE, the length of UpPTS is 0 or 1.
7. one of according to claim 1-5 described method, it is characterized in that: in the situation that guarantee that total configuration timeslot number is no more than N, configuration to various scenes can be finely tuned, and makes the part scene that identical configuration be arranged, but the condition need to meet step B when fine setting in.
8. one of according to claim 1-5 described method, it is characterized in that: when the LTE system during not with the TD-SCDMA coexistence of systems, one group of DwPTS, GP when selection will coexist under a certain scene and the configuration of the length of UpPTS are applied in situation about not coexisting, if this moment, the configuration sum of time slot did not surpass maximum, can increase the GP length that this assembly does not comprise in putting, until the configuration sum reaches maximum.
9. according to claim 6 described method, it is characterized in that: when the LTE system during not with the TD-SCDMA coexistence of systems, one group of DwPTS, GP when selection will coexist under a certain scene and the configuration of the length of UpPTS are applied in situation about not coexisting, if this moment, the configuration sum of time slot did not surpass maximum, can increase the GP length that this assembly does not comprise in putting, until the configuration sum reaches maximum.
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