CN102857460A - Method and device for transmitting data in wireless communication system - Google Patents
Method and device for transmitting data in wireless communication system Download PDFInfo
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- CN102857460A CN102857460A CN2011101823799A CN201110182379A CN102857460A CN 102857460 A CN102857460 A CN 102857460A CN 2011101823799 A CN2011101823799 A CN 2011101823799A CN 201110182379 A CN201110182379 A CN 201110182379A CN 102857460 A CN102857460 A CN 102857460A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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Abstract
The invention discloses a method and a device for transmitting data in a wireless communication system. The wireless communication system comprises first type terminal devices, second type terminal devices and a base station. The method includes that according to at least one of an uplink time slot and a downlink time slot between the first type terminal devices and the base station, the uplink time slot and the downlink time slot respectively comprise a plurality of orthogonal frequency division multiplexing (OFDM) signs which are used for transmitting first data between the first type terminal devices and the base station, each of the OFDM signs is provided with a guard interval, and second data are transmitted between the second type terminal devices and the base station in continuous time of guard intervals. According to the method and the device for transmitting the data in the wireless communication system, services can be provided for the second type terminal devices in a wide range, and the first type conventional terminal device is not influenced basically, so that the use ratio of a frequency spectrum is high.
Description
Technical field
The present invention relates to the communications field, more specifically, the present invention relates in wireless communication system, carry out the method and apparatus of transfer of data.
Background technology
M2M (machine is to machine) communication refers to data are sent to another M2M equipment from a M2M equipment, is exactly machine and the communicating by letter of machine.The brainstrust in this field is called Internet of Things (InternetofThings) with M2M.Can in the communicating by letter of this machine and machine, adopt wireless communication technology.For example, can adopt third generation wireless communication technology or LTE (LongTerm Evolution, long-term project evolution) wireless communication technology makes a large amount of M2M equipment realize connecting and communicating by letter such as instrument, household electrical appliances, automobile, lighting apparatus, medical monitors etc.
Summary of the invention
According to an aspect of the present invention, proposed a kind of method of carrying out transfer of data in wireless communication system, described wireless communication system comprises first kind terminal equipment, Second Type terminal equipment and base station, and described method comprises step:
Between described first kind terminal equipment and described base station at least one of uplink and downlink time slot,
Wherein ascending time slot and descending time slot comprise respectively a plurality of OFDM symbols, be used between described first kind terminal equipment and described base station, carrying out first data transmission, and wherein each OFDM symbol has the protection interval,
In the duration at described protection interval, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
According to another aspect of the invention, proposed a kind of device that carries out transfer of data in wireless communication system, described wireless communication system comprises first kind terminal equipment, Second Type terminal equipment and base station, and described device comprises:
Transmission unit is used at least one of between described first kind terminal equipment and described base station uplink and downlink time slot,
Wherein ascending time slot and descending time slot comprise respectively a plurality of OFDM symbols, be used between described first kind terminal equipment and described base station, carrying out first data transmission, and wherein each OFDM symbol has the protection interval,
In the duration at described protection interval, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
Wherein, first kind terminal equipment for example is conventional terminal equipment, for example mobile phone, portable computer, personal digital assistant etc., and its needed message transmission rate is generally higher.The Second Type terminal equipment for example is instrument, household electrical appliances, automobile, lighting apparatus, medical monitors etc. M2M equipment, and its needed message transmission rate is generally lower.
According to the present invention, can provide service to the Second Type terminal equipment in the broad range, conventional first kind terminal equipment be there is no impact, and the availability of frequency spectrum is high.
Description of drawings
By below in conjunction with the description of the drawings, and along with understanding more comprehensively of the present invention, other purposes of the present invention and effect will become more clear and easy to understand, wherein:
Fig. 1 shows the wireless communication system that the present invention can implement therein;
Fig. 2 A and 2B show LTE TDD (time division duplex) frame structure according to prior art;
Fig. 2 C shows LTE FDD (Frequency Division Duplexing (FDD)) frame structure according to prior art;
Fig. 3 A and Fig. 3 B show respectively the structure of time slot corresponding to a kind of CP form, and wherein Fig. 3 A is corresponding to the situation of conventional CP, and Fig. 3 B is corresponding to the situation of expansion CP;
Fig. 4 A and Fig. 4 B show respectively up between the first kind terminal equipment of LTE communication system and base station according to the embodiment of the present invention or/and in the descending time slot in the duration of the Cyclic Prefix of OFDM symbol, carry out the situation of the second transfer of data between Second Type terminal equipment and base station.
In all above-mentioned accompanying drawings, identical label represents to have identical, similar or corresponding feature or function.
Embodiment
Basic thought of the present invention is; between first kind terminal equipment and base station at least one of uplink and downlink time slot; wherein ascending time slot and descending time slot comprise respectively a plurality of OFDM (OFDM) symbol; be used between first kind terminal equipment and base station, carrying out first data transmission; and wherein each OFDM symbol has the protection interval; in the duration at the protection interval of each OFDM symbol, between Second Type terminal equipment and base station, carry out the second transfer of data.
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 shows the wireless communication system that the present invention can implement therein.
As shown in Figure 1, this wireless communication system 100 comprises base station 110, first kind terminal equipment 120 and 130 and Second Type terminal equipment 140 and 150.Wherein first kind terminal equipment 120 and 130 and base station 110 between communicate by Radio Link 160 and 170, Second Type terminal equipment 140 and 150 and base station 110 between communicate by Radio Link 180 and 190.
First kind terminal equipment 120 and 130 is conventional terminal equipments, for example mobile phone, portable computer, personal digital assistant etc., and its needed message transmission rate is generally higher.Second Type terminal equipment 140 and 150 for example is instrument, household electrical appliances, automobile, lighting apparatus, medical monitors etc. M2M equipment, and its needed message transmission rate is generally lower.
This wireless communication system 100 can be LTE TDD system, can be the system of LTE FDD system or other types.
Certainly, those skilled in the art will appreciate that wireless communication system 100 can also comprise more base station, more or first kind terminal equipment still less, more or Second Type terminal equipment still less.
Fig. 2 A and 2B show LTE TDD (time division duplex) frame structure according to prior art, namely first kind terminal equipment 120 and 130 and base station 110 between carry out the frame structure of transfer of data.Frame structure shown in Fig. 2 A and Fig. 2 B all comprises subframe 0, subframe 1, subframe 2, subframe 3, subframe 4, subframe 5, subframe 6, subframe 7, subframe 8 and subframe 9 totally 10 subframes, difference is, frame structure shown in Fig. 2 A comprises subframe 1 and subframe 6 these two special subframes, and the frame structure shown in Fig. 2 B includes only subframe 1 this special subframe.This special subframe has three special time slots: descending pilot frequency time slot (DwPTS), protection interval (GP), uplink pilot time slot (UpPTS).
These 10 subframes adopt unified 1ms (corresponding to minimum transfer time interval TTI) subframe lengths.Conventional subframe comprises the time slot of two 0.5ms.
According to the frequency of occurrences of special subframe, LTE tdd frame structure can be divided into two types on 5ms periodic frame structure and 10ms periodic frame structure.Therefore, shown in Fig. 2 A is 5ms periodic frame structure, and shown in Fig. 2 B is 10ms periodic frame structure.
5ms periodic frame structure is divided into a 10ms radio frames " field " of two 5ms.These two fields have identical structure and identical ascending-descending subframes ratio.
In 5 subframes that 1 field of 5ms periodic frame structure comprises, except 1 special subframe, wherein special subframe always comprises 1 descending DwPTS, 1 up UpPTS and 1 GP, in all the other 4 conventional subframes the ratio of descending sub frame and sub-frame of uplink can be 3: 1,2: 2 or 1: 3.
In 10 subframes that 1 radio frames of 10ms periodic frame structure comprises, except 1 special subframe, in all the other 9 conventional subframes the ratio of descending sub frame and sub-frame of uplink can be 8: 1,7: 2,6: 3 or 3: 5.Wherein in 3: 5 situations, 1 10ms radio frames comprises 2 special subframes.Although last a kind of configuration is divided into 2 fields, the up-downgoing ratio of 2 fields is different, so the cycle still is 10ms.
Fig. 2 C shows LTE FDD (Frequency Division Duplexing (FDD)) frame structure according to prior art, namely first kind terminal equipment 120 and 130 and base station 110 between carry out the frame structure of transfer of data.In FDD, uplink and downlink have identical frame structure, but use different frequency ranges.Therefore, the LTE FDD frame structure shown in Fig. 2 C can be understood as the uplink frame structure, also can be understood as the downlink frame structure.
Similar with the frame structure of LTE TDD, the every frame of LTE FDD comprises subframe 0, subframe 1, subframe 2, subframe 3, subframe 4, subframe 5, subframe 6, subframe 7, subframe 8 and subframe 9 totally 10 subframes, these 10 subframes adopt unified 1ms (corresponding to minimum transfer time interval TTI) subframe lengths, and each subframe comprises the time slot of two 0.5ms.
According to the difference of the Cyclic Prefix that adopts (CP), no matter be in the TDD system, or in the FDD system, each time slot can comprise 7 or 6 OFDM symbols.
Fig. 3 A and Fig. 3 B show respectively the structure of time slot corresponding to a kind of CP form, and wherein Fig. 3 A is corresponding to the situation of conventional CP, and Fig. 3 B is corresponding to the situation of expansion CP.
As shown in Figure 3A, situation for conventional CP, each time slot comprises 7 OFDM symbols, the duration of each OFDM symbol is 2048 chronomeres (Ts), Ts=1/30720 millisecond wherein, the CP duration of first OFDM symbol is 160Ts, and the CP duration of all the other 6 OFDM symbols is 144Ts.
Shown in Fig. 3 B, for the situation of expansion CP, each time slot comprises 6 OFDM symbols, and the duration of each OFDM symbol is 2048Ts, and the duration of the CP of each OFDM symbol is identical, all is 512Ts.
The part of each OFDM symbol afterbody is copied the Cyclic Prefix (CP) that the front that is put into this OFDM symbol consists of this OFDM symbol.The effect of CP is to eliminate intersymbol interference (ISI) and interchannel interference (ICI).
Certainly, it will be understood by those of skill in the art that if just in order to eliminate ISI, can not use CP, and can only between each OFDM symbol, arrange the protection interval.
Fig. 4 A and Fig. 4 B show respectively up between the first kind terminal equipment of LTE communication system and base station according to the embodiment of the present invention or/and in the descending time slot in the duration of the Cyclic Prefix of OFDM symbol, carry out the situation of the second transfer of data between Second Type terminal equipment and base station.
That is to say, in Fig. 4 A and the shown execution mode of Fig. 4 B, in the duration at protection interval, also between first kind terminal equipment and base station, transmit simultaneously Cyclic Prefix or the cyclic suffix of corresponding OFDM symbol.
Therefore in the situation shown in Fig. 4 A, the Cyclic Prefix of OFDM symbol is extended cyclic prefix, and the number of OFDM symbol is 6 in time slot, and the length of each Cyclic Prefix, and namely the duration is 512Ts.
In the situation shown in Fig. 4 A; protection interval for first OFDM symbol; in 208 chronomeres after it begins outside 160 chronomeres and 144 chronomeres before finishing; namely in the length shown in Fig. 4 A 401; protection interval for 5 remaining OFDM symbols; in 368 chronomeres before it finishes outside 144 chronomeres; namely in the length shown in Fig. 4 A 403,405,407,409,411, between Second Type terminal equipment and base station, carry out the second transfer of data.
According to this execution mode, total time of implementation of carrying out the second transfer of data between Second Type terminal equipment and base station is 208Ts+368Ts*5=2048Ts, just is the time of an OFDM symbol.
The advantage of this execution mode is, owing between Second Type terminal equipment and base station, do not carry out the second transfer of data on the duration at whole CP, and leave the surplus of 144Ts between the next OFDM symbol, this surplus is enough to resist intersymbol interference in the ordinary course of things, and is therefore little to the interference of the first data transmission that carries out between first kind terminal equipment and base station on next OFDM symbol in the second transfer of data that CP carried out between Second Type terminal equipment and the base station on the duration.
Certainly; those skilled in the art it is also contemplated that following execution mode; in this embodiment; protection interval for 5 remaining OFDM symbols; in 224 chronomeres after it begins outside 144 chronomeres and 144 chronomeres before finishing, between Second Type terminal equipment and base station, carry out the second transfer of data.
The advantage of this execution mode is, owing between Second Type terminal equipment and base station, do not carry out the second transfer of data on the duration at whole CP, and leave the surplus of 144Ts between upper one and the next OFDM symbol, this surplus is enough to resist intersymbol interference in the ordinary course of things, therefore not only CP on the duration in that to carry out the second transfer of data between Second Type terminal equipment and the base station little to the interference of the first data transmission that carries out between first kind terminal equipment and base station on next OFDM symbol, and little to second data transmission interference of between Second Type terminal equipment and base station, carrying out on the duration at CP at the first data transmission that carries out between first kind terminal equipment and the base station on a upper OFDM symbol.
In the situation shown in Fig. 4 B, the Cyclic Prefix of OFDM symbol is the regular circulation prefix, therefore the number of OFDM symbol is 7 in time slot, and the CP duration of first OFDM symbol be 160Ts, the CP duration of all the other 6 OFDM symbols is 144Ts.
In the situation shown in Fig. 4 B, at the 2nd, 4,5,7 of intervals protection of 7 protections intervals, in the namely length shown in Fig. 4 B 413,415,417, duration of 419, between Second Type terminal equipment and base station, carry out the second transfer of data.
According to this execution mode, total time of implementation of carrying out the second transfer of data between Second Type terminal equipment and base station is 144Ts*5=576Ts.
Certainly, those skilled in the art it is contemplated that, can be in 7 protection intervals more, still less or in the protection interval different from the protection interval shown in Fig. 4 B, between Second Type terminal equipment and base station, carry out the second transfer of data.
Those skilled in the art it is also conceivable that in the specific subcarrier of specific CP, carries out the second transfer of data between Second Type terminal equipment and base station.
In the ascending time slot between first kind terminal equipment and base station in the protection interval of OFDM symbol; carrying out between Second Type terminal equipment and the base station under the situation of the second transfer of data, between Second Type terminal equipment and base station, carrying out the second transfer of data and comprise:
Send the second data at the Second Type terminal equipment, and receive the second data in the base station.
In the descending time slot between first kind terminal equipment and base station in the protection interval of OFDM symbol; carrying out between Second Type terminal equipment and the base station under the situation of the second transfer of data, between Second Type terminal equipment and base station, carrying out the second transfer of data and comprise:
Send the second data in the base station, and receive the second data at the Second Type terminal equipment.
In the duration at protection interval; simultaneously also in the situation of the Cyclic Prefix that transmits corresponding OFDM symbol between first kind terminal equipment and the base station or cyclic suffix; namely in the situation that as above 4A and 4B describe by reference to the accompanying drawings; comprise the mixed signal of the Cyclic Prefix of the second data and OFDM symbol or part the first data that cyclic suffix is transmitted at Second Type terminal equipment and/or base station reception, and from mixed signal, isolate the second data.
More generally, described mixed signal can also comprise the time domain time delay expansion of part the first data of transmitting on the front OFDM symbol at corresponding protection interval.
Because part the first data of transmitting on the Cyclic Prefix of OFDM symbol or the cyclic suffix can correctly obtain, so can isolate the second data from mixed signal.
In addition; owing to also can obtain by means such as estimations the time domain time delay extended attribute of channel; therefore, even mixed signal also comprises the time domain time delay expansion of part the first data of transmitting on the front OFDM symbol at corresponding protection interval, also can from mixed signal, isolate the second data.
According to an embodiment of the invention, a kind of device that carries out transfer of data in wireless communication system (wherein said wireless communication system comprises first kind terminal equipment, Second Type terminal equipment and base station) comprises:
Transmission unit is used at least one of between first kind terminal equipment and base station uplink and downlink time slot,
Wherein ascending time slot and descending time slot comprise respectively a plurality of OFDM symbols, be used between first kind terminal equipment and base station, carrying out first data transmission, and wherein each OFDM symbol has the protection interval,
In the duration at protection interval, between Second Type terminal equipment and described base station, carry out the second transfer of data.
In the ascending time slot between first kind terminal equipment and base station in the protection interval of OFDM symbol, carrying out between Second Type terminal equipment and the base station under the situation of the second transfer of data, the transmission unit of this device in the Second Type terminal equipment comprises transmitting element, is used for sending the second data; The transmission unit of this device in the base station comprises receiving element, is used for receiving the second data.
In the descending time slot between first kind terminal equipment and base station in the protection interval of OFDM symbol, carrying out between Second Type terminal equipment and the base station under the situation of the second transfer of data, the transmission unit of this device in the base station comprises transmitting element, is used for sending the second data; The transmission unit of this device in the Second Type terminal equipment comprises receiving element, is used for receiving the second data.
In an embodiment of the invention; wherein in the duration at described protection interval; also between described first kind terminal equipment and described base station, transmit simultaneously Cyclic Prefix or the cyclic suffix of corresponding OFDM symbol; and described receiving element also is used for receiving comprising the Cyclic Prefix of the second data and OFDM symbol or the mixed signal of cyclic suffix; described device also comprises: separative element is used for isolating described the second data from described mixed signal.
As mentioned above, described mixed signal can also comprise the time domain time delay expansion of the front OFDM symbol at corresponding protection interval.
As mentioned above, can be only in the specific part of duration at described protection interval, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
As mentioned above, can only in the duration at specific protection interval, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
As mentioned above; ascending time slot and descending time slot comprise respectively 6 OFDM symbols; the duration of each OFDM symbol is 2048 chronomeres; the protection of each OFDM symbol is spaced apart 512 chronomeres; one of them chronomere equals 1/30720 millisecond; can be for the protection interval of first OFDM symbol; in 208 chronomeres after it begins outside 160 chronomeres and 144 chronomeres before finishing; protection interval for 5 remaining OFDM symbols; in 368 chronomeres before it finishes outside 144 chronomeres, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
As mentioned above; ascending time slot and descending time slot comprise respectively 7 OFDM symbols; the duration of each OFDM symbol is 2048 chronomeres; the protection of first OFDM symbol is spaced apart 160 chronomeres; the protection of 6 remaining OFDM symbols is spaced apart 144 chronomeres; one of them chronomere equals 1/30720 millisecond; can in any one or a plurality of duration at 7 protection intervals, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
Above-mentioned the second data can comprise schedule information; particularly in the descending time slot between first kind terminal equipment and base station in the protection interval of OFDM symbol; carrying out between Second Type terminal equipment and the base station under the situation of the second transfer of data, in the protection interval of which subframe, which time slot or which OFDM symbol, carrying out the second transfer of data in order to inform the Second Type terminal.
According to the present invention, cover the third generation widely or LTE wireless communication system and carry out transfer of data between the M2M type terminals equipment owing to adopt, therefore can provide service to the M2M type terminals equipment in the broad range.In addition; protection interval owing to the OFDM symbol in each time slot in the conventional terminal equipment that utilizes wireless communication system and the uplink/downlink frames between the base station; carry out the data transfer between M2M type terminals equipment and the base station; therefore less on the impact of conventional terminal equipment, and therefore the availability of frequency spectrum is high.
Should be noted that for the present invention is more readily understood top description has been omitted to be known for a person skilled in the art and may to be essential more specifically some ins and outs for realization of the present invention.
Those skilled in the art it is also understood that and the invention is not restricted to step described above, and the present invention also comprises combination that step described above is carried out, order conversion etc.Final scope of the present invention is defined by the appended claims.
Therefore; selecting and describing execution mode is in order to explain better principle of the present invention and practical application thereof; and those of ordinary skills are understood, under the prerequisite that does not break away from essence of the present invention, all modifications and change all fall within protection scope of the present invention defined by the claims.
In addition, the step that those skilled in the art will appreciate that above-described the whole bag of tricks can realize by the computer of programming.Here, some execution mode is intended to the overlay program storage device, and it is machine or computer-readable, and coding has machine can carry out or the computer executable instructions program, and the some or all of steps of said method are carried out in wherein said instruction.This program storage device can be for example Disk and tape, hard disk drive or optical readable digital data storage medium of magnetic recording medium for example.Execution mode also is intended to cover the computer that is programmed for the described step of carrying out said method.
Claims (16)
1. method of in wireless communication system, carrying out transfer of data, described wireless communication system comprises first kind terminal equipment, Second Type terminal equipment and base station, described method comprises step:
Between described first kind terminal equipment and described base station at least one of uplink and downlink time slot,
Wherein ascending time slot and descending time slot comprise respectively a plurality of OFDM symbols, be used between described first kind terminal equipment and described base station, carrying out first data transmission, and wherein each OFDM symbol has the protection interval,
In the duration at described protection interval, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
2. method according to claim 1, wherein in the duration at described protection interval, between described Second Type terminal equipment and described base station, carry out the second transfer of data and comprise:
Send the second data at described Second Type terminal equipment, and receive the second data in described base station; Or/and
Send the second data in described base station, and receive the second data at described Second Type terminal equipment;
3. method according to claim 1; wherein in the duration at described protection interval; also between described first kind terminal equipment and described base station, transmit simultaneously Cyclic Prefix or the cyclic suffix of corresponding OFDM symbol; and receive in described Second Type terminal equipment and/or base station and to comprise the Cyclic Prefix of the second data and OFDM symbol or the mixed signal of cyclic suffix, and
Described method also comprises step:
From mixed signal, isolate described the second data.
4. method according to claim 3, wherein said mixed signal also comprise the time domain time delay expansion of the front OFDM symbol at corresponding protection interval.
5. method according to claim 1 wherein only in the specific part of duration at described protection interval, is carried out the second transfer of data between described Second Type terminal equipment and described base station.
6. method according to claim 1 wherein only in the duration at specific protection interval, is carried out the second transfer of data between described Second Type terminal equipment and described base station.
7. method according to claim 5; wherein ascending time slot and descending time slot comprise respectively 6 OFDM symbols; the duration of each OFDM symbol is 2048 chronomeres; the protection of each OFDM symbol is spaced apart 512 chronomeres; one of them chronomere equals 1/30720 millisecond; wherein for the protection interval of first OFDM symbol; in 208 chronomeres after it begins outside 160 chronomeres and 144 chronomeres before finishing; protection interval for 5 remaining OFDM symbols; in 368 chronomeres before it finishes outside 144 chronomeres, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
8. method according to claim 6; wherein ascending time slot and descending time slot comprise respectively 7 OFDM symbols; the duration of each OFDM symbol is 2048 chronomeres; the protection of first OFDM symbol is spaced apart 160 chronomeres; the protection of 6 remaining OFDM symbols is spaced apart 144 chronomeres; one of them chronomere equals 1/30720 millisecond; wherein in any one or a plurality of duration at 7 protection intervals, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
9. device that in wireless communication system, carries out transfer of data, described wireless communication system comprises first kind terminal equipment, Second Type terminal equipment and base station, described device comprises:
Transmission unit is used at least one of between described first kind terminal equipment and described base station uplink and downlink time slot,
Wherein ascending time slot and descending time slot comprise respectively a plurality of OFDM symbols, be used between described first kind terminal equipment and described base station, carrying out first data transmission, and wherein each OFDM symbol has the protection interval,
In the duration at described protection interval, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
10. device according to claim 9, wherein said transmission unit comprises:
Transmitting element is used for sending the second data; Or/and
Receiving element is used for receiving the second data;
11. device according to claim 9; wherein in the duration at described protection interval; also between described first kind terminal equipment and described base station, transmit simultaneously Cyclic Prefix or the cyclic suffix of corresponding OFDM symbol; and described receiving element also is used for receiving comprising the Cyclic Prefix of the second data and OFDM symbol or the mixed signal of cyclic suffix
And described device also comprises:
Separative element is used for isolating described the second data from described mixed signal.
12. device according to claim 11, wherein said mixed signal also comprise the time domain time delay expansion of the front OFDM symbol at corresponding protection interval.
13. device according to claim 9 wherein only in the specific part of duration at described protection interval, carries out the second transfer of data between described Second Type terminal equipment and described base station.
14. device according to claim 9 wherein only in the duration at specific protection interval, carries out the second transfer of data between described Second Type terminal equipment and described base station.
15. device according to claim 13; wherein ascending time slot and descending time slot comprise respectively 6 OFDM symbols; the duration of each OFDM symbol is 2048 chronomeres; the protection of each OFDM symbol is spaced apart 512 chronomeres; one of them chronomere equals 1/30720 millisecond; wherein for the protection interval of first OFDM symbol; in 208 chronomeres after it begins outside 160 chronomeres and 144 chronomeres before finishing; protection interval for 5 remaining OFDM symbols; in 368 chronomeres before it finishes outside 144 chronomeres, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
16. device according to claim 14; wherein ascending time slot and descending time slot comprise respectively 7 OFDM symbols; the duration of each OFDM symbol is 2048 chronomeres; the protection of first OFDM symbol is spaced apart 160 chronomeres; the protection of 6 remaining OFDM symbols is spaced apart 144 chronomeres; one of them chronomere equals 1/30720 millisecond; wherein in any one or a plurality of duration at 7 protection intervals, between described Second Type terminal equipment and described base station, carry out the second transfer of data.
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| CN201110182379.9A CN102857460B (en) | 2011-06-30 | 2011-06-30 | Carry out the method and apparatus of transfer of data in a wireless communication system |
| TW101120116A TW201316738A (en) | 2011-06-30 | 2012-06-05 | Method and apparatus for data transmission in wireless communication system |
| PCT/IB2012/001269 WO2013001342A1 (en) | 2011-06-30 | 2012-06-15 | Method and apparatus for data transmission in wireless communication system |
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| CN201110182379.9A CN102857460B (en) | 2011-06-30 | 2011-06-30 | Carry out the method and apparatus of transfer of data in a wireless communication system |
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| US20110110458A1 (en) * | 2008-02-29 | 2011-05-12 | France Telecom | Methods for transmitting and receiving a multicarrier signal comprising a guard interval, corresponding computer program products, transmitting and receiving devices, and signal |
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| CN100401658C (en) * | 2005-02-07 | 2008-07-09 | 上海贝尔阿尔卡特股份有限公司 | Signalling transmitting method and cellular system therefor |
| CN100502282C (en) * | 2007-03-28 | 2009-06-17 | 中兴通讯股份有限公司 | Transmission method of synchronization signal of time-division duplex system |
| US7839824B2 (en) * | 2007-07-31 | 2010-11-23 | Beceem Communications Inc. | Allocation of periodically distributed frames of wireless communication |
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| CN101350803A (en) * | 2007-07-16 | 2009-01-21 | 大唐移动通信设备有限公司 | Method and apparatus for conveying down data |
| CN101494630A (en) * | 2008-01-21 | 2009-07-29 | 华为技术有限公司 | Method and system for efficient utilization of cyclic prefix time slot |
| US20110110458A1 (en) * | 2008-02-29 | 2011-05-12 | France Telecom | Methods for transmitting and receiving a multicarrier signal comprising a guard interval, corresponding computer program products, transmitting and receiving devices, and signal |
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| TW201316738A (en) | 2013-04-16 |
| WO2013001342A1 (en) | 2013-01-03 |
| CN102857460B (en) | 2015-11-25 |
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