CN103188795B - A kind of method and apparatus promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity - Google Patents
A kind of method and apparatus promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity Download PDFInfo
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- CN103188795B CN103188795B CN201110446359.8A CN201110446359A CN103188795B CN 103188795 B CN103188795 B CN 103188795B CN 201110446359 A CN201110446359 A CN 201110446359A CN 103188795 B CN103188795 B CN 103188795B
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Abstract
The invention discloses a kind of method and apparatus promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity, first, calculate TD-LTE uplink and downlink timeslot proportioning; Calculate the maximum symbolic number of special time slot DwPTS of TD-LTE special subframe; According to the maximum symbolic number of the DwPTS obtained, calculate the special time slot allocation plan with TD-LTE during TD-SCDMA adjacent frequency coexistence.The present invention can make the downlink capacity maximum lift more than 40% of TD-LTE.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of method and apparatus promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity.
Background technology
In current communication code technology, the wireless frame length of TD-LTE is 10ms, and the radio frames of each 10ms comprises the field of two 5ms.Time slot and 3 special time slots that 8 length are 0.5ms is comprised: DwPTS, GP and UpPTS in each field.The length of DwPTS and UpPTS is configurable, and the total length of DwPTS, GP and UpPTS is 1ms.LTETDD supports the up-downgoing switching point cycle of 5ms and 10ms simultaneously.DwPTS is comprised, GP and UpPTS in subframe 1.When 5ms switching cycle, subframe 6 comprises DwPTS, GP and UpPTS, and when 10ms switching cycle, subframe 6 only comprises DwPTS.Other all subframes all comprise two isometric time slots.GP is reserved to the switching of downstream-to-upstream.Other subframe/time slot is used for uplink or downlink transfer.Uplink is separated in the time domain with downlink transfer, and its structure as shown in Figure 1.
TD-LTE up-downgoing assignment configuration is as shown in the table,
In special time slot, the length of DwPTS can be configured to 3 ~ 12 OFDM symbol, and wherein, master sync signal is positioned at the 3rd symbol, and accordingly, in this special subframe, the maximum length of PDCCH is two symbols.The length of UpPTS can be configured to 1 ~ 2 OFDM symbol, can be used for carrying Random Access Channel and/or Sounding reference signal.GP is used for up-downgoing translation and protection, forms primarily of " propagation delay time " and " equipment transmitting-receiving conversion time delay ".The length of special time slot is configured by high-level signaling, and the config option of special time slot is as shown in the table.
GP, DwPTS and UpPTS in special subframe can adjust width flexibly, DwPTS and UpPTS two special time slots also can transmit data, if the width of GP is larger, means that the data that DwPTS and UpPTS can be used for transmitting are fewer, namely have lost power system capacity.When TD-SCDMA and TD-LTE two systems same frequency range is adjacent coexist time, need to adjust the GP size of TD-LTE to ensure that up-downgoing switching point aligns, thus avoid the interference between two system up-downgoings.
Scheme (1) is when TD-SCDMA time slot proportion is 3: 3, and TD-LTE adopts 2: 2 subframe proportionings, and special subframe is set as configuration 7, can realize perfection and coexist, there is no resources loss.
But when TD-SCDMA time slot proportion is 2: 4 or 5: 1, TD-LTE adopts 3: 1 and 1: 3 subframe proportioning, special subframe need be set as configuration 0,5 by TD-LTE, compare scheme (1), TD-LTE have lost the power system capacity of 18% more, is unfavorable for the lifting of power system capacity and the availability of frequency spectrum.
In the design of TD-SCDMA, that DwPTS (descending pilot frequency time slot in each subframe) carries is descending synchronous signal channel (DwPCH), and the object of downlink pilot frequency channel is as descending pilot frequency and downlink synchronous signal.The signal that DwPCH launches will cover whole Target cell, uses constant power to transmit.Its transmission power level is issued by high-level signaling, and broadcasts in community.This time slot is that the SYNC_DL sequence of 64chips and the protection interval of 32chips form by length.That UpPTS (uplink pilot time slot) carries is uplink synchronous channel (UpPCH), and the object of ascending pilot channel is to realize uplink synchronous.When terminal needs to connect with network side, first it will launch UpPCH, and when after the response (FPACH) obtaining network, terminal is at up transmission RACH channel.Uplink pilot time slot is that the SYNC_UL sequence of 128chips and the protection interval of 32chips form by length.DwPTS, GP and UpPTS are special time slot, the carrying special channel of TD-SCDMA system, and length is fixed, and can not change.And in TD-LTE, GP, UpPTS at least need take a symbol, and DwPTS due to its function and other descending time slots as broad as long, DwPTS variable-length.
According to above analysis, DwPTS, GP, UpPTS length in TD-SCDMA is fixed, and the DwPTS variable-length in TD-LTE, in order to promote the efficiency of TD-LTE, DwPTS reasonably should be arranged according to the time slot proportion of TD-SCDMA.
TD-SCDMA has 2 uplink and downlink timeslot conversions in a frame, uplink special time slot and uplink service time slot before GP and up-downgoing business time-slot transfer point, before GP and be all descending time slot after business time-slot transfer point, the up-downgoing time of each time slot proportion of TD-SCDMA is as following table.
The time that TD-LTE special subframe respectively configures is as following table:
Summary of the invention
The object of the invention is the shortcoming for prior art, the configuration of TD-LTE and TD-SCDMA special subframe is calculated, a kind of method and apparatus promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity is proposed, when the time slot proportion of TD-SCDMA can be made to be 2: 4, obtain TD-LTE special time slot allocation plan, make the capacity maximum lift more than 10% of TD-LTE, under TD-SCDMA time slot proportion is 5: 1 configuring conditions, make TD-LTE downlink capacity promote more than 40%.
According to an aspect of the present invention, provide a kind of promote TD-LTE and TD-SCDMA adjacent frequency coexistence capacity method, comprise step:
A. TD-LTE uplink and downlink timeslot proportioning is calculated;
B. the maximum symbolic number of the special time slot DwPTS of TD-LTE special subframe is calculated;
C. according to the maximum symbolic number of the special time slot DwPTS of the TD-LTE special subframe obtained, the special time slot allocation plan with TD-LTE during TD-SCDMA adjacent frequency coexistence is obtained.
Preferably, described steps A comprises further:
According to the time slot proportion of the up-downgoing selection of time TD-LTE of TD-SCDMA;
The sub-frame of uplink number of TD-LTE is the smallest positive integral being less than TD-SCDMA upstream time, and descending sub frame number is the smallest positive integral being less than TD-SCDMA downgoing time;
Obtain the TD-LTE uplink and downlink timeslot proportioning that TD-SCDMA uplink and downlink timeslot proportioning is corresponding.
Preferably, the time slot proportion obtaining the step of TD-LTE uplink and downlink timeslot proportioning corresponding to TD-SCDMA uplink and downlink timeslot proportioning described in is specially:
When TD-SCDMA uplink and downlink timeslot proportioning is 2: 4, TD-LTE uplink and downlink timeslot proportioning is 1: 3;
When TD-SCDMA uplink and downlink timeslot proportioning is 3: 3, TD-LTE uplink and downlink timeslot proportioning is 2: 2;
When TD-SCDMA uplink and downlink timeslot proportioning is 4: 2, TD-LTE uplink and downlink timeslot proportioning is 2: 2;
When TD-SCDMA uplink and downlink timeslot proportioning is 5: 1, TD-LTE uplink and downlink timeslot proportioning is 3: 1.
Preferably, described step B comprises further:
When TD-LTE downgoing time is not more than TD-SCDMA downgoing time and TD-LTE upstream time is not more than TD-SCDMA upstream time, calculate the DwPTS of TD-LTE;
The symbolic number of DwPTS maximum possible is calculated according to the maximum value possible obtaining DwPTS.
Preferably, the step that the maximum value possible that described basis obtains DwPTS calculates the symbolic number of DwPTS maximum possible is specially:
TD-SCDMA adopts 2: 4 or 1: 5 time slot proportion,
During short CP, when coexisting with TD-SCDMA, the special time slot DwPTS symbolic number of TD-LTE special subframe is 6;
During long CP, when coexisting with TD-SCDMA, the special time slot DwPTS symbolic number of TD-LTE special subframe is 5.
Preferably, the special time slot allocation plan of described step C is specially:
When TD-LTE frame structure is short CP, described TD-LTE special time slot allocation plan is
When TD-LTE frame structure is long CP, described TD-LTE special time slot allocation plan is
According to a further aspect of the invention, additionally provide a kind of device promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity, comprise TD-LTE time slot proportion computing unit, the maximum symbolic number computing unit of special time slot DwPTS of TD-LTE special subframe and TD-LTE special time slot allocation plan computing unit, wherein
Described TD-LTE time slot proportion computing unit, for calculating TD-LTE uplink and downlink timeslot proportioning;
The maximum symbolic number computing unit of special time slot DwPTS of described TD-LTE special subframe, for calculating TD-LTE special subframe maximum duration;
Described TD-LTE special time slot allocation plan computing unit, for according to the maximum symbolic number of DwPTS obtained, calculates the special time slot allocation plan with TD-LTE during TD-SCDMA adjacent frequency coexistence.
Preferably, described TD-LTE time slot proportion computing unit is further used for:
According to the time slot proportion of the up-downgoing selection of time TD-LTE of TD-SCDMA;
The sub-frame of uplink number of TD-LTE is the smallest positive integral being less than TD-SCDMA upstream time, and descending sub frame number is the smallest positive integral being less than TD-SCDMA downgoing time;
Obtain the TD-LTE uplink and downlink timeslot proportioning that TD-SCDMA uplink and downlink timeslot proportioning is corresponding.
Preferably, described TD-LTE time slot proportion computing unit is further used for:
The time slot proportion calculating the step of corresponding TD-LTE uplink and downlink timeslot proportioning according to the described TD-SCDMA of obtaining uplink and downlink timeslot proportioning is:
When TD-SCDMA uplink and downlink timeslot proportioning is 2: 4, TD-LTE uplink and downlink timeslot proportioning is 1: 3;
When TD-SCDMA uplink and downlink timeslot proportioning is 3: 3, TD-LTE uplink and downlink timeslot proportioning is 2: 2;
When TD-SCDMA uplink and downlink timeslot proportioning is 4: 2, TD-LTE uplink and downlink timeslot proportioning is 2: 2;
When TD-SCDMA uplink and downlink timeslot proportioning is 5: 1, TD-LTE uplink and downlink timeslot proportioning is 3: 1.
Preferably, the maximum symbolic number computing unit of the special time slot DwPTS of described TD-LTE special subframe is further used for:
Be not more than TD-SCDMA downgoing time according to TD-LTE downgoing time and TD-LTE upstream time is not more than TD-SCDMA upstream time, calculate the DwPTS maximum duration of TD-LTE;
Maximum duration according to obtaining DwPTS calculates the maximum symbolic number of DwPTS.
Preferably, the maximum duration that described basis obtains DwPTS calculates DwPTS maximum symbolic number and is specially:
TD-SCDMA adopts 2: 4 or 1: 5 time slot proportion,
During short CP, when coexisting with TD-SCDMA, the DwPTS symbolic number of TD-LTE is 6;
During long CP, when coexisting with TD-SCDMA, the DwPTS symbolic number of TD-LTE is 5.
Preferably, the special time slot allocation plan that described TD-LTE special time slot allocation plan computing unit calculates is specially:
When TD-LTE frame structure is short CP, described TD-LTE special time slot allocation plan is
When TD-LTE frame structure is long CP, described TD-LTE special time slot allocation plan is
Technique effect of the present invention is:
Under TD-SCDMA time slot proportion is 2: 4 configuring conditions, the TD-LTE time slot proportion scheme special time slot available symbols number that the present invention proposes is 6, can data services, effectively can promote downlink capacity; Under TD-SCDMA time slot proportion is 5: 1 configuring conditions, the time slot proportion scheme special time slot available symbols number that the present invention proposes is 6, can data services, also effectively can promote downlink capacity.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is TD-LTE frame structure coding schematic diagram.
Fig. 2 is a kind of flow chart promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity method of the present invention.
Fig. 3 is a kind of structural representation promoting TD-LTE and TD-SCDMA adjacent frequency coexistence displacement apparatus in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Core concept of the present invention is that obtaining TD-SCDMA and TD-LTE adjacent frequency coexistence condition is according to the analysis to TD-SCDMA and TD-LTE time slot proportion scheme:
1., based on keeping the principle that the design coverage distance of TD-SCDMA with TD-LTE is substantially identical, the protection interval of TD-SCDMA is not less than 0.075us, and the protection interval of TD-LTE is not less than 0.071us;
2. the principle that, TD-LTEGP constant based on TD-SCDMAGP is variable, the uplink and downlink time of TD-LTE is less than the uplink and downlink time of TD-SCDMA;
The UpPTS of 3.TD-LTE is minimum takies 1 OFDM symbol, is namely not less than 0.071us in short CP situation, is not less than 0.0833us in long CP situation.
As shown in Figure 2, according to the adjacent frequency coexistence condition analyzing TD-SCDMA and TD-LTE obtained, the special time slot method obtaining configuring optimum TD-LTE is as follows:
Step 101, calculating TD-LTE uplink and downlink timeslot proportioning, be specially the time slot proportion of the up-downgoing selection of time TD-LTE according to TD-SCDMA, a common subframe duration of TD-LTE is 1ms, the sub-frame of uplink number of TD-LTE is the smallest positive integral being less than TD-SCDMA upstream time, descending sub frame number is the smallest positive integral being less than TD-SCDMA downgoing time, namely
N(TD-LTESubfrme)
U＝int(T(TD-SCDMA)
U)
N(TD-LTESubfrme)
D＝int(T(TD-SCDMA)
D)
According to above analysis, TD-LTE uplink and downlink timeslot proportioning corresponding to TD-SCDMA uplink and downlink timeslot proportioning is as following table:
Step 102, calculate the maximum symbolic number of special time slot DwPTS of TD-LTE special subframe: consider that the Minimal Protective interval of TD-LTE is substantially identical with the Minimal Protective interval of TD-SCDMA, the requirement of TD-LTE special subframe set of time is as follows
TD-LTE downgoing time should be not more than TD-SCDMA downgoing time, namely
T(TD-LTE)
DwPTS≤T(TD-SCDMA)
D-N(TD-LTESubfrme)
D
T(TD-LTE)
DwPTS≤T(TD-SCDMA)
D-int(T(TD-SCDMA)
D)
T(TD-LTE)
DwPTS≤mod(T(TD-SCDMA)
D，1)
TD-LTE upstream time should be not more than TD-SCDMA upstream time, namely
T(TD-LTE)
UpPTS≤mod(T(TD-SCDMA)
U，1)
T(TD-LTE)
UpPTS≤1-mod(T(TD-SCDMA)
D，1)-T(TD-SCDMA)
GP
1-T(TD-LTE)
DwPTS-T(TD-LTE)
Gp≤0.925-mod(T(TD-SCDMA)
D，1)
T(TD-LTE)
DwPTS≥0.075-T(TD-LTE)
Gp-mod(T(TD-SCDMA)
D，1)
The DwPTS obtaining TD-LTE requires as follows:
mod(T(TD-SCDMA)
D，1)≥T(TD-LTE)
DwPTS≥0.075-T(TD-LTE)
Gp-mod(T(TD-SCDMA)
D，1)
The symbolic number of DwPTS maximum possible is calculated according to the maximum value possible obtaining DwPTS:
N(TD-LTE)
DwPTS＝int(T(TD-LTE)
DwPTS/T(TD-LTE)
symbol)
T (TD-LTE)
symbolfor symbol duration, being 0.071us in short CP situation, is 0.0833us in long CP situation.
Result of calculation is as following table:
According to above analysis, when TD-SCDMA employing 2: 4,1: 5 time slot proportion, when TD-LTE and TD-SCDMA coexists, the DwPTS symbolic number of optimum is 6 (short CP)/5 (long CP).
Step 103, obtain the adoptable special time slot allocation plan of TD-LTE as following table:
Therefore, under TD-SCDMA time slot proportion is 2: 4 configuring conditions, the maximum symbolic number of former scheme DwPTS is 3, can not transport service data, the scheme special time slot available symbols number that the present invention proposes is 6, can data services, and downlink capacity promotes 6/ (4*14)=10.7%;
Under TD-SCDMA time slot proportion is 5: 1 configuring conditions, the maximum symbolic number of former scheme DwPTS is 3, can not transport service data, and the scheme special time slot available symbols number that the present invention proposes is 6, can data services, and downlink capacity promotes 6/14=42.8%.
Present invention also offers a kind of device promoting TD-LTE and TD-SCDMA adjacent frequency coexistence capacity, as shown in Figure 3, comprise TD-LTE time slot proportion computing unit, the maximum symbolic number computing unit of special time slot DwPTS of TD-LTE special subframe and TD-LTE special time slot allocation plan computing unit, wherein
Described TD-LTE time slot proportion computing unit, for calculating TD-LTE uplink and downlink timeslot proportioning;
The maximum symbolic number computing unit of special time slot DwPTS of described TD-LTE special subframe, for calculating the maximum symbolic number of the special time slot DwPTS of TD-LTE special subframe;
Described TD-LTE special time slot allocation plan computing unit, for the maximum symbolic number of the special time slot DwPTS according to the TD-LTE special subframe obtained, calculates the special time slot allocation plan with TD-LTE during TD-SCDMA adjacent frequency coexistence.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. promote a method for TD-LTE and TD-SCDMA adjacent frequency coexistence capacity, it is characterized in that, comprise step:
A. TD-LTE uplink and downlink timeslot proportioning is calculated;
B. the maximum symbolic number of the special time slot DwPTS of TD-LTE special subframe is calculated;
C. according to the maximum symbolic number of the DwPTS obtained, the special time slot allocation plan with TD-LTE during TD-SCDMA adjacent frequency coexistence is obtained;
Wherein, described steps A comprises further:
According to the time slot proportion of the up-downgoing selection of time TD-LTE of TD-SCDMA;
The sub-frame of uplink number of TD-LTE is the smallest positive integral of the time numerical value being less than TD-SCDMA upstream time, and descending sub frame number is the smallest positive integral of the time numerical value being less than TD-SCDMA downgoing time; The unit of described TD-SCDMA upstream time and TD-SCDMA downgoing time is ms;
Obtain the TD-LTE uplink and downlink timeslot proportioning that TD-SCDMA uplink and downlink timeslot proportioning is corresponding.
2. the method for claim 1, is characterized in that, described in obtain the step of TD-LTE uplink and downlink timeslot proportioning corresponding to TD-SCDMA uplink and downlink timeslot proportioning time slot proportion be specially:
When TD-SCDMA uplink and downlink timeslot proportioning is 2:4, TD-LTE uplink and downlink timeslot proportioning is 1:3;
When TD-SCDMA uplink and downlink timeslot proportioning is 3:3, TD-LTE uplink and downlink timeslot proportioning is 2:2;
When TD-SCDMA uplink and downlink timeslot proportioning is 4:2, TD-LTE uplink and downlink timeslot proportioning is 2:2;
When TD-SCDMA uplink and downlink timeslot proportioning is 5:1, TD-LTE uplink and downlink timeslot proportioning is 3:1.
3. the method for claim 1, is characterized in that, described step B comprises further:
When TD-LTE downgoing time is not more than TD-SCDMA downgoing time and TD-LTE upstream time is not more than TD-SCDMA upstream time, calculate the maximum duration of the DwPTS of TD-LTE;
The symbolic number of DwPTS maximum possible is calculated according to the maximum duration obtaining DwPTS.
4. method as claimed in claim 3, is characterized in that, the symbolic number that described step calculates DwPTS maximum possible according to the maximum duration obtaining DwPTS is specially:
TD-SCDMA adopts the time slot proportion of 2:4 or 1:5,
When TD-LTE frame structure is short CP, when coexisting with TD-SCDMA, in TD-LTE special subframe, the DwPTS symbolic number of special time slot is 6;
When TD-LTE frame structure is long CP, when coexisting with TD-SCDMA, in TD-LTE special subframe, the DwPTS symbolic number of special time slot is 5.
5. method as claimed in claim 4, it is characterized in that, the special time slot allocation plan of described step C is specially:
When TD-LTE frame structure is short CP, described TD-LTE special time slot allocation plan is
When TD-LTE frame structure is long CP, described TD-LTE special time slot allocation plan is
6. one kind promotes the device of TD-LTE and TD-SCDMA adjacent frequency coexistence capacity, it is characterized in that, comprise TD-LTE time slot proportion computing unit, the maximum symbolic number computing unit of DwPTS of TD-LTE special subframe and TD-LTE special time slot allocation plan computing unit, wherein
Described TD-LTE time slot proportion computing unit, for calculating TD-LTE uplink and downlink timeslot proportioning;
The maximum symbolic number computing unit of special time slot DwPTS of described TD-LTE special subframe, for calculating the maximum symbolic number of special time slot DwPTS of TD-LTE special subframe;
Described special time slot allocation plan computing unit, for the maximum symbolic number of special time slot DwPTS according to the TD-LTE special subframe obtained, calculates special time slot allocation plan during TD-LTE and TD-SCDMA adjacent frequency coexistence;
Wherein, described TD-LTE time slot proportion computing unit is further used for:
According to the time slot proportion of the up-downgoing selection of time TD-LTE of TD-SCDMA;
The sub-frame of uplink number of TD-LTE is the smallest positive integral of the time numerical value being less than TD-SCDMA upstream time, and descending sub frame number is the smallest positive integral of the time numerical value being less than TD-SCDMA downgoing time; The unit of described TD-SCDMA upstream time and TD-SCDMA downgoing time is ms;
Obtain the TD-LTE uplink and downlink timeslot proportioning that TD-SCDMA uplink and downlink timeslot proportioning is corresponding.
7. device as claimed in claim 6, it is characterized in that, described TD-LTE time slot proportion computing unit is further used for:
The time slot proportion calculating the step of corresponding TD-LTE uplink and downlink timeslot proportioning according to the described TD-SCDMA of obtaining uplink and downlink timeslot proportioning is:
When TD-SCDMA uplink and downlink timeslot proportioning is 2:4, TD-LTE uplink and downlink timeslot proportioning is 1:3;
When TD-SCDMA uplink and downlink timeslot proportioning is 3:3, TD-LTE uplink and downlink timeslot proportioning is 2:2;
When TD-SCDMA uplink and downlink timeslot proportioning is 4:2, TD-LTE uplink and downlink timeslot proportioning is 2:2;
When TD-SCDMA uplink and downlink timeslot proportioning is 5:1, TD-LTE uplink and downlink timeslot proportioning is 3:1.
8. device as claimed in claim 6, it is characterized in that, the maximum symbolic number computing unit of special time slot DwPTS of described TD-LTE special subframe is further used for:
Be not more than TD-SCDMA downgoing time according to TD-LTE downgoing time and TD-LTE upstream time is not more than TD-SCDMA upstream time, calculate the DwPTS maximum duration of TD-LTE;
Maximum duration according to obtaining DwPTS calculates the maximum symbolic number of DwPTS.
9. device as claimed in claim 8, is characterized in that, the maximum symbolic number of maximum duration calculating DwPTS that described basis obtains DwPTS is specially:
TD-SCDMA adopts 2:4 or 1:5 time slot proportion,
When TD-LTE frame structure is short CP, when TD-LTE and TD-SCDMA coexists, DwPTS symbolic number is 6;
When TD-LTE frame structure is long CP, when TD-LTE and TD-SCDMA coexists, DwPTS symbolic number is 5.
10. device as claimed in claim 6, it is characterized in that, the special time slot allocation plan of the TD-LTE that described special time slot allocation plan computing unit calculates is specially:
When TD-LTE frame structure is short CP, described special time slot allocation plan is
When TD-LTE frame structure is long CP, described special time slot allocation plan is
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| CN101179328A (en) * | 2007-12-05 | 2008-05-14 | 中兴通讯股份有限公司 | Method and apparatus for configuring special time slot in TDD system |
| CN101227230A (en) * | 2008-01-08 | 2008-07-23 | 中兴通讯股份有限公司 | Method and apparatus for collocating special time slot in special sub frame of LTE TDD system |
| CN101772165A (en) * | 2008-12-31 | 2010-07-07 | 中兴通讯股份有限公司 | Time slot configuration method and time slot configuration system for dual-mode base station |
| CN101772030A (en) * | 2009-01-05 | 2010-07-07 | 鼎桥通信技术有限公司 | Method for acquiring time slot proportion of time division duplex (TDD) long term evolution (LTE) system cell in time division synchronous code division multiple access (TD-SCDMA) system |
| CN102404850A (en) * | 2010-09-07 | 2012-04-04 | 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 |
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| CN103188795A (en) | 2013-07-03 |
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