CN101159485B - TDD system signal transmission method and frame structure - Google Patents

TDD system signal transmission method and frame structure Download PDF

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CN101159485B
CN101159485B CN 200710167741 CN200710167741A CN101159485B CN 101159485 B CN101159485 B CN 101159485B CN 200710167741 CN200710167741 CN 200710167741 CN 200710167741 A CN200710167741 A CN 200710167741A CN 101159485 B CN101159485 B CN 101159485B
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time slot
duration
general
symbol
descending
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CN101159485A (en
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夏树强
梁春丽
郝鹏
戴博
郁光辉
胡留军
喻斌
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a method of transmitting a signal of a time division duplex system, which includes that within the time length 5ms of a half-frame of wireless frames, the base station transmits signal on M normal downlink special time slots, and receives signal on N normal uplink special time slots; the time lengths of normal time slots, including normal downlink time slots and normal uplink time slots, are equal, and the remained time length is the special downlink time slot of transmitting signal and/or the protective gap of non-transmitting signal, or the remained time length is the special uplink time slot of receiving signal and/or the protective gap of non-transmitting signal. A frame structure comprises two 5ms half-frames of equal length, each half frame includes M normal downlink time slots and/or N normal uplink time slots, the time lengths of the normal time slots are equal, each half frame also includes a special downlink time slot and/or a protective gap, or a special uplink time slot and/or a protective gap, wherein M and N are integers. The invention resolves the problem of wasting resources.

Description

A kind of transmission method of TDD system signal and frame structure
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of transmission method and frame structure of TDD system signal.
Background technology
Fig. 1 is a kind of wireless frame structure schematic diagram of tdd systems.In this schematic diagram, the radio frames of a 10ms comprises two isometric fields, and the length of each field is 5ms.Each field comprises again 7 general time slots (also claiming subframe) and 3 special time slots: descending pilot frequency time slot DwPTS, protection interval GP and uplink pilot time slot UpPTS.
The total length of 3 special time slot DwPTS, GP and UpPTS equals 275us.Wherein, the slot length of DwPTS approximates 83.33us, and primary synchronization channel (P-SCH) signal that is mainly used in down-going synchronous is sending on bandwidth in the middle of this time slot, and other bandwidth of this time slot does not send data; The slot length of GP equals 50us, is used for the protection that descending time slot switches to ascending time slot; The slot length of UpPTS approximates 141.67us, and the uplink random access signal that is mainly used in uplink synchronous sends on this time slot.
In 7 general time slots, the length of each time slot is 675us.System realizes for simplification, TS 0Always be assigned to descending time slot, auxiliary synchronization channel (S-SCH) signal that is used for down-going synchronous sends on the middle bandwidth of this last symbol of time slot.Other 6 general time slots, that is: TS 1～TS 6Can be assigned as flexibly up or descending time slot according to service needed.
When certain general time slot is descending time slot, each time slot comprises 8 or 9, and (Cyclic Prefix of number of symbols and symbol is relevant according to symbol that OFDM (OFDM) mode sends, when Cyclic Prefix was the regular circulation prefix, each time slot comprised 9 symbols; When Cyclic Prefix was extended cyclic prefix, each time slot comprised 8 symbols).In this time slot, control channel sends the DSCH Downlink Shared Channel of user's general data at several symbols of the back of time slot usually at several symbols of the front of time slot.
When certain general time slot was ascending time slot, each time slot comprises 8 or 9 symbols that send according to the single carrier mode, and (Cyclic Prefix of number of symbols and symbol was relevant, and when Cyclic Prefix was the regular circulation prefix, each time slot comprised 9 symbols; When Cyclic Prefix was extended cyclic prefix, each time slot comprised 8 symbols).In this time slot, the control channel signal is usually in the position, both sides of system bandwidth, and the duration is a time slot; Send the Uplink Shared Channel signal of user's general data in the rest position of system bandwidth, the duration is also a time slot.
This tdd systems has similar frame structure to existing TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system.When this system and existing TD-SCDMA system adjacent frequency coexistence, as long as the uplink and downlink timeslot switching proportion that this system arranges and TD-SCDMA system is identical, just can effectively avoid the phase mutual interference of this tdd systems and TD-SCDMA system signal.
But there are the following problems for this tdd systems in front:
1, GP arrange very dumb.In this system, the GP slot length equals 50us.When system need to support wider covering, the length of GP must enlarge.The method that enlarges GP can be that reservation UpPTS time slot is the GP time slot, perhaps reserves UpPTS time slot and TS 1For the GP time slot (is noted, cannot be reserved TS 1The part symbol be GP, this be because ascending control channel usually on the both sides of system bandwidth, the duration is a time slot, if reserve TS 1The part symbol as GP, the receptivity of ascending control channel can degradation; Also DwPTS cannot be reserved or/and TS 0The part symbol as GP, this is that and auxiliary synchronous signals S-SCH is at TS because master sync signal P-SCH sends on DwPTS 0Last symbol send, if reserve DwPTS or/and TS 0The part symbol be GP, the user just possibly can't receive P-SCH or P/S-SCH signal, and the P/S-SCH signal signal that at first be subscriber access system need receives, the user can't correctly receive the P/S-SCH signal, also just can't access this system);
2, because the P/S-SCH signal is positioned at the boundary that descending time slot switches to ascending time slot, as previously mentioned, the P/S-SCH signal is that at first subscriber access system needs the signal that receives, and therefore, the power of P/S-SCH signal usually can be greater than other signal.Under cellular environment, because the power of P/S-SCH signal is larger, can have a strong impact on the receptivity of ascending time slot signal;
3, the utilization ratio of DwPTS time slot is not high.When the bandwidth ratio of system was wider, because the middle bandwidth (1.25MHz) of only having the P-SCH signal in system bandwidth upward sends, so the utilization ratio of DwPTS time slot can be very low.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of transmission method and frame structure of TDD system signal, the signal that makes transmission both can with existing TD-SCDMA system adjacent frequency coexistence, can solve problems of the prior art again.
The technical solution used in the present invention is:
The invention provides a kind of transmission method of TDD system signal, comprising:
In the 5ms duration of a field of radio frames, the base station is transmitted signal on M general descending time slot, receives signal on N general ascending time slot; General time slot; the duration that comprises described general descending time slot and described general ascending time slot all equates; remaining duration is the special descending time slot of transmitted signal and/or the protection interval of non-transmitted signal; perhaps remaining duration is the special ascending time slot of reception signal and/or the protection interval of non-transmitted signal, and M, N are positive integer.
Further, remaining duration is special descending time slot and protection interval, and in the duration of a field, described base station is successively at the 1st general descending time slot TS 0, on described special descending time slot, a M-1 general descending time slot after transmitted signal; transmitted signal not on described protection interval; receive signal again on N general ascending time slot; synchronizing signal sends on first general descending time slot or described special descending time slot, and uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
The first configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=675us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=25us;
Use regular circulation prefix T in general time slot CP-normal=8.33us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol;
The second configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=666.67us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=83.31us;
When using the regular circulation prefix in general time slot, each general time slot comprises 9 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=8.33us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=7.29us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.67us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol;
The third configuration mode
Described M and N sum are 8, the duration T of described general time slot Slot=590.625us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=25;
When using the regular circulation prefix in general time slot, each general time slot comprises 8 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=9.9us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=6.77us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol;
The 4th kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=642.2us, the duration T of special descending time slot DL=500us, the protection interval duration T GP=4.6us;
When using the regular circulation prefix in general time slot, each general time slot comprises 9 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, each Cyclic Prefix duration T CP-normal=4.68us; Perhaps, general time slot uses extended cyclic prefix, and the Cyclic Prefix duration of first symbol is T CP-extended1=14.06us, the duration of the Cyclic Prefix of all the other symbols is T CP-extended2=13.5us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises descending OFDM symbol or 6 OFDM symbols that Cyclic Prefix is 16.67us that 7 Cyclic Prefix are 4.68us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol.
Further; remaining duration is special ascending time slot and protects the interval; in the duration of a field; described base station is successively after transmitted signal on M general descending time slot; transmitted signal not on described protection interval; receive signal successively on described special ascending time slot and N general ascending time slot again, described synchronizing signal sends on first general descending time slot, and described uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
The first configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=675us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=25us;
Use regular circulation prefix T in general time slot CP-normal=8.33us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission;
The second configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=666.67us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=83.31us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other symbols use regular circulation prefix T CP-normal2During=7.29us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.67us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission;
The third configuration mode
Described M and N sum are 8, the duration T of described general time slot Slot=590.625us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=25us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=9.9us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission.
Further, remaining duration is special descending time slot, and in the duration of a field, described base station is successively at first general descending time slot TS 0, on described special descending time slot, a M-1 general descending time slot after transmitted signal, receive signal again on N general ascending time slot, described synchronizing signal sends on first general descending time slot or described special descending time slot, and described uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=662.5us, the duration T of special descending time slot DL=362.5us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.14us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises 4 or 5 descending OFDM symbols with Cyclic Prefix, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Latter two symbol on send described synchronizing signal.
Further, remaining duration is special ascending time slot, in the duration of a field, described base station is successively after transmitted signal on M general descending time slot, receive signal successively on described special ascending time slot, a N general ascending time slot again, described synchronizing signal sends on described first general descending time slot, and described accidental access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=662.5us, the duration T of special ascending time slot UL=362.5us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.14us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission.
Further; remaining duration is the protection interval; in the duration of a field; described base station is after M general descending time slot transmitted signal; receive signal again on N general ascending time slot; described synchronizing signal sends on first general descending time slot, and described accidental access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=713.54us, the protection interval duration T GP=5.22us;
Use regular circulation prefix T in general time slot CP-normal=4.69us, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, in general time slot, the first two symbol uses extended cyclic prefix T CP-extended1=22.92us, all the other each symbols use extended cyclic prefix T CP-extended2=22.4us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission.
Further, the duration of described protection interval GP is configurable, the granularity is-symbol level of its adjustment.
The present invention also provides a kind of frame structure of tdd systems radio frames, and radio frames comprises two isometric 5ms fields, wherein
Each field comprises M general descending time slot and N general ascending time slot; general time slot; the duration that comprises described general descending time slot and described general ascending time slot all equates; also comprise in each field a special descending time slot and/or one the protection interval; perhaps a special ascending time slot and/or is protected the interval, and M, N are positive integer.
Further, described field comprises the 1st general descending time slot TS successively 0, described special descending time slot, a M-1 general descending time slot, protection interval and N general ascending time slot; synchronizing signal sends on first general descending time slot or described special descending time slot, and uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
The first configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=675us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=25us;
Use regular circulation prefix T in general time slot CP-normal=8.33us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol;
The second configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=666.67us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=83.31us;
When using the regular circulation prefix in general time slot, each general time slot comprises 9 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=7.29us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=8.33us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.67us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on 2 OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol;
The third configuration mode
Described M and N sum are 8, the duration T of described general time slot Slot=590.625us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=25;
When using the regular circulation prefix in general time slot, each general time slot comprises 8 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=9.9us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=6.77us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol;
The 4th kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=642.2us, the duration T of special descending time slot DL=500us, the protection interval duration T GP=4.6us;
When using the regular circulation prefix in general time slot, each general time slot comprises 9 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, each Cyclic Prefix duration T CP-normal=4.68us; Perhaps, general time slot uses extended cyclic prefix, and the Cyclic Prefix duration of first symbol is T CP-extended1=14.06us, the duration of the Cyclic Prefix of all the other symbols is T CP-extended2=13.5us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises descending OFDM symbol or 6 OFDM symbols that Cyclic Prefix is 16.67us that 7 Cyclic Prefix are 4.68us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Send synchronizing signal on latter two symbol.
Further; described field comprises the general descending time slot of M, described protection interval, described special ascending time slot and N general ascending time slot successively; described synchronizing signal sends on first general descending time slot, and described uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
The first configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=675us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=25us;
Use regular circulation prefix T in general time slot CP-normal=8.33us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission;
The second configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=666.67us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=83.31us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other symbols use regular circulation prefix T CP-normal2During=7.29us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.67us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission;
The third configuration mode
Described M and N sum are 8, the duration T of described general time slot Slot=590.625us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=25us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=9.9us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission.
Further, described field comprises the 1st general descending time slot TS successively 0, special descending time slot, a M-1 general descending time slot and N general ascending time slot, described synchronizing signal sends on first general descending time slot or described special descending time slot, and described uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=662.5us, the duration T of special descending time slot DL=362.5us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.14us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises 4 or 5 descending OFDM symbols with Cyclic Prefix, sends synchronizing signal on two OFDM symbols therein; Perhaps, at TS 0Latter two symbol on send described synchronizing signal.
Further, described field comprises the 1st general descending time slot TS successively 0, described special descending time slot, a M-1 general descending time slot and N general ascending time slot, described synchronizing signal sends on described first general descending time slot, described accidental access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=662.5us, the duration T of special ascending time slot UL=362.5us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.14us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission.
Further; described field comprises M general descending time slot, protection interval and N general ascending time slot successively; described synchronizing signal sends on first general descending time slot, and described uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
Further, described field duration is 5ms, and in field, the duration of each time slot adopts following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=713.54us, the protection interval duration T GP=5.22us;
Use regular circulation prefix T in general time slot CP-normal=4.69us, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, in general time slot, the first two symbol uses extended cyclic prefix T CP-extended1=22.92us, all the other each symbols use extended cyclic prefix T CP-extended2=22.4us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At TS 0The described synchronizing signal of upper transmission.
Adopt the present invention to have following characteristics:
1. except can be at special descending time slot T DLOutside upper transmission downlink synchronous signal, can also send other data on the frequency resource of its nonsynchronous signal, solve the problem of the wasting of resources;
2. with respect to synchronizing channel, when adopting different time slot ratios, the GP position is unfixing;
3. synchronizing signal is away from the up-downgoing switching point, thereby even guarantee that synchronizing signal has adopted power ascension, bring very large interference also can not for the uplink receiving of other base station;
4. the duration of protection interval GP can flexible configuration, as can increase by the punching of downlink data symbol the duration of GP, the adjustment granularity is-symbol level of GP time.
Description of drawings
Fig. 1 is the schematic diagram of frame structure in a kind of tdd systems in prior art;
Fig. 2 is the transmission method flow chart of TDD system signal in the embodiment of the present invention;
Fig. 3 is at T in the embodiment of the present invention DL≠ 0, T UL=0, T GPA kind of frame structure schematic diagram in ≠ 0 situation;
Fig. 4 is at T in the embodiment of the present invention DL=0, T UL≠ 0, T GPA kind of frame structure schematic diagram in ≠ 0 situation;
Fig. 5 is at T in the embodiment of the present invention DL≠ 0, T UL=0, T GPA kind of frame structure schematic diagram in=0 situation;
Fig. 6 is at T in the embodiment of the present invention DL=0, T UL≠ 0, T GPA kind of frame structure schematic diagram in=0 situation;
Fig. 7 is at T in the embodiment of the present invention DL=0, T UL=0, T GPA kind of frame structure schematic diagram in ≠ 0 situation.
Embodiment
Adopt the physical layer frame structure of above-mentioned method for transmitting signals to be: in the 5ms duration of a field of radio frames, to comprise on M general descending time slot and N general ascending time slot; The duration of general time slot (comprising general descending time slot and general ascending time slot) all equates; remaining duration is the special descending time slot of transmitted signal and/or the protection interval of non-transmitted signal; perhaps remaining duration is the special ascending time slot of reception signal and/or the protection interval of non-transmitted signal, and M, N are positive integer.
The radio frames that is 10ms comprises two isometric 5ms fields, wherein comprises M+N isometric general time slot in the field of each 5ms, is designated as TS 0～TS n-1, the duration of each general time slot is T Slot, 5ms deducts the duration T that is designated as special time slot remaining time that the individual generally duration of time slot of M+N obtains Special, then special time slot is divided into 3 parts: special descending time slot, protection interval and special ascending time slot, its duration is respectively that duration is designated as respectively T DL, T GPAnd T UL, above time variable satisfies following relation:
n×T slot+T special＝5ms
T DL+T GP+T UL＝T special
Core concept of the present invention is: T DLCan insert front or the back of any one descending time slot, can send in the above synchronizing signal (when it is positioned at the back of first general time slot) or send on first descending time slot; T ULCan be inserted into front or the back of any one ascending time slot, can send in the above on uplink random access signal or one or more continuous ascending time slot in office and send; Work as T GP≠ 0 o'clock, it was positioned at the handoff boundary of descending time slot and ascending time slot, switched to the protection interval of ascending time slot as descending time slot.
According to above core concept, the field of a 5ms can be carried out following division:
It (is T that the field of 5ms comprises n isometric general time slot, 1 special descending time slot and GP DL≠ 0, T UL=0, T GP≠ 0);
Perhaps, to comprise n isometric general time slot, 1 special ascending time slot and GP (be T to the field of 5ms DL=0, T UL≠ 0, T GP≠ 0);
Perhaps, to comprise n isometric general time slot, 1 special ascending time slot (be T to the field of 5ms DL=0, T UL≠ 0, T GP=0);
Perhaps, to comprise n isometric general time slot, 1 special descending time slot (be T to the field of 5ms DL≠ 0, T UL=0, T GP=0);
Perhaps, to comprise n isometric general time slot and GP (be T to the field of 5ms DL=0, T UL=0, T GP≠ 0).
Correspondingly, the transmission method of TDD system signal of the present invention comprises: in the 5ms duration of a field of radio frames, the base station is transmitted signal on M general descending time slot, receives signal on N general ascending time slot; The duration of general time slot (comprising general descending time slot and general ascending time slot) all equates; remaining duration is the special descending time slot of transmitted signal and/or the protection interval of non-transmitted signal; perhaps remaining duration is the special ascending time slot of reception signal and/or the protection interval of non-transmitted signal; M, N are positive integer; M represents general ascending time slot number, and N represents general descending time slot number.
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in detail.The present invention can have following typical time slot configuration, but is not limited to these time slot configuration.Suppose TS 0～TS iBe descending time slot, TS i+1～TN n-1Be ascending time slot, wherein, i≤n-2:
Configuration 1:
The field of 5ms comprises M+N isometric general time slot, a special descending time slot and a GP, namely works as T DL≠ 0, T UL=0, T GP≠ 0 situation.
As shown in Figure 3, the ratio of supposing lower/upper row time slot is 4: 3, TS 0～TS 3Be descending time slot, TS 4～TS 6Be ascending time slot, T DLBe inserted into TS 0With TS 1Between, T GPBe positioned at TS 3With TS 4Between, switch to the protection interval of ascending time slot as descending time slot.Synchronizing signal is placed on T DLUpper transmission, uplink random access signal is at TS 4～TS 6In any one or a plurality of continuous time slot on send.
Correspondingly, in the 5ms of field duration, the base station is successively at the 1st general descending time slot TS 0, on special descending time slot, a M-1 general descending time slot after transmitted signal, transmitted signal not on the protection interval, then receive signal on N general ascending time slot.
(1) T DLBe positioned at TS 0Afterwards, synchronizing signal P/S-SCH can be at TS 0Latter two symbol or at T DLUpper transmission;
(2) T GPBe positioned at TS iWith TS i+1Between;
(3) uplink random access signal is at TS i+1～TS n-1In any one or a plurality of continuous time slot on send.
The symbol that in this example, descending time slot comprises is the OFDM symbol, the symbol that upper behavior single carrier mode sends, but the present invention is not limited to this.
The below further provides some canonical parameter designs of above configuration, but is not limited to these parameter designing:
Parameter designing 1-1: be applicable to Typical Disposition 1.
n＝7
T slot＝675us
T special＝5000-7×675＝275us
T DL＝250us
T UL＝0
T GP＝25us
T CP-normal＝8.33us
T CP-extended＝17.71us
Under this parameter designing, the duration of each general time slot is 675us, and when using the regular circulation prefix, each general time slot comprises 9 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-normal=8.33us; When using extended cyclic prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=17.71us.T DLComprise the descending symbol that 3 Cyclic Prefix are 16.67us, Typical Disposition 1 time, can send in the above synchronizing signal P/S-SCH, perhaps at TS 0Send on latter two symbol.Uplink random access signal is sending on one or more continuous ascending time slots arbitrarily.
Parameter designing 1-2: be applicable to Typical Disposition 1.
n＝7
T slot＝666.67us
T special＝5000-7×666.67＝333.31us
T DL＝250us
T UL＝0us
T GP＝83.31us
T CP-normal1＝8.33us，T CP-normal2＝7.29us
T CP-extended＝16.67us
Under this parameter designing, the duration of each general time slot is 667us, and when using the regular circulation prefix, each general time slot comprises 9 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=8.33us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=7.29us; When using extended cyclic prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=16.67us.T DLComprise the descending symbol that 3 Cyclic Prefix are 16.67us, Typical Disposition 1 time, wherein two symbols can be used for sending synchronizing signal P/S-SCH, perhaps at TS 0Send on latter two symbol.Uplink random access signal is sending on one or more continuous ascending time slots arbitrarily.
Parameter designing 1-3: be applicable to above Typical Disposition 1.
n＝8
T slot＝590.625us
T special＝5000-8×590.625＝275us
T DL＝250us
T UL＝0
T GP＝25
T CP-normal1＝9.9us，T CP-normal2＝6.77us
T CP-extended＝17.71us
Under this parameter designing, the duration of each general time slot is 590.625us, and when using the regular circulation prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=9.9us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=6.77us; When using extended cyclic prefix, each general time slot comprises 7 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=17.71us.T DLThe symbol that to comprise 3 Cyclic Prefix be 16.67us, Typical Disposition 1 time, wherein two symbols can be used for sending synchronizing signal P/S-SCH, perhaps at TS 0Send on latter two symbol.Uplink random access signal is sending on one or more continuous ascending time slots arbitrarily.
Parameter designing 1-4: be applicable to above Typical Disposition 1.
n＝7
T slot＝642.2us
T special＝5000-7×642.2＝504.6us
T DL＝500us
T UL＝0
T GP＝4.6us
T CP-normal＝4.68us
T CP-extended1＝14.06us，T CP-extended2＝13.5us
Under this parameter designing, the duration of each general time slot is 642.2us, and when using the regular circulation prefix, each general time slot comprises 9 up/down row symbols, and the duration of symbol is T Symbol=66.67us, the duration of Cyclic Prefix is T CP-normal=4.68us; When using extended cyclic prefix, each general time slot comprises 7 up/down row symbols, and the duration of symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-extended1=14.06us, the duration of the Cyclic Prefix of all the other symbols is T CP-extended2=13.5us.T DLSymbol or 6 symbols that Cyclic Prefix is 16.67us that to comprise 7 Cyclic Prefix be 4.68us, Typical Disposition 1 time, wherein two symbols can be used for sending the P/S-SCH synchronizing signal, perhaps at TS 0Send on latter two symbol.Uplink random access signal is sending on one or more continuous ascending time slots arbitrarily.
The field of configuration 2:5ms comprises M+N isometric general time slot, a special ascending time slot and a GP, namely works as T DL=0, T UL≠ 0, T GP≠ 0 situation.
As shown in Figure 4, the ratio of supposing lower/upper row time slot is 4: 3, TS 0～TS 3Be descending time slot, TS 4～TS 6Be ascending time slot, T ULBe positioned at TS 4Before, T GPBe positioned at TS 3With T ULBetween, switch to the protection interval of ascending time slot as descending time slot.Synchronizing signal can be placed on TS 0Upper transmission, uplink random access signal is at T ULAnd TS 4～TS 6In any one or a plurality of continuous time slot on send.
Correspondingly, in the 5ms of field duration, the base station successively after transmitted signal on the general descending time slot of M, transmitted signal not on the protection interval, then receive signal successively on special ascending time slot and N general ascending time slot.
(1) synchronizing signal P/S-SCH is at TS 0Send on latter two symbol;
(2) T GPBe positioned at TS iWith TS i+1Between;
(3) T ULBe positioned at TS i+1Before, the uplink random signal sends in the above, to support little coverage requirement; Perhaps, the uplink random signal is at T ULAnd TS i+1～TS n-1In any one or a plurality of continuous slot on send, to support larger covering requirement.
Parameter designing 2-1: be applicable to Typical Disposition 2.
n＝7
T slot＝675us
T special＝5000-7×675＝275us
T DL＝0
T UL＝250us
T GP＝25us
T CP-normal＝8.33us
T CP-extended＝17.71us
Under this parameter designing, the duration of each general time slot is 675us, and when using the regular circulation prefix, each general time slot comprises 9 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-normal=8.33us; When using extended cyclic prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=17.71us.Synchronizing signal is fixed on first descending time slot TS 0Send on latter two symbol.T ULDuration be 250us, can be under little coverage requirement, be used for sending uplink random access signal; When needs were supported large coverage, the uplink random signal can be at T ULAnd TS i+1～TS 6In any one or a plurality of continuous slot on send.
Parameter designing 2-2: be applicable to Typical Disposition 2.
n＝7
T slot＝666.67us
T special＝5000-7×666.67＝333.31us
T DL＝0us
T UL＝250us
T GP＝83.31us
T CP-normal1＝8.33us，T CP-normal2＝7.29us
T CP-extended＝16.67us
Under this parameter designing, the duration of each general time slot is 667us, and when using the regular circulation prefix, each general time slot comprises 9 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of the Cyclic Prefix of first symbol is T CP-normal1=8.33us, the duration of the Cyclic Prefix of all the other symbols is T CP-normal2=7.29us; When using extended cyclic prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=16.67us.Synchronizing signal is fixed on first descending time slot TS 0Send on latter two symbol.T ULDuration be 250us, can be under little coverage requirement, be used for sending uplink random access signal, when needs were supported large coverage, the uplink random signal can be at T ULAnd TS i+1～TS 6In any one or a plurality of continuous slot on send.
Parameter designing 2-3: be applicable to above Typical Disposition 2.
n＝8
T slot＝590.625us
T special＝5000-8×590.625＝275us
T DL＝0
T UL＝250us
T GP＝25us
T CP-normal1＝9.9us，T CP-normal2＝6.77us
T CP-extended＝17.71us
Under this parameter designing, the duration of each general time slot is 590.625us.When using the regular circulation prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of the Cyclic Prefix of first symbol is T CP-normal1=9.9us, the duration of the Cyclic Prefix of all the other each symbols is T CP-normal2=6.77us; When using extended cyclic prefix, each general time slot comprises 7 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=17.71us.Synchronizing signal is fixed on first descending time slot TS 0Send on latter two symbol.T ULDuration be 250us, can be under little coverage requirement, be used for sending uplink random access signal; When needs were supported large coverage, the uplink random signal can be at T ULAnd TS i+1～TS 6In any one or a plurality of continuous slot on send.
The field of configuration 3:5ms comprises M+N isometric general time slot and special descending time slot, namely works as T DL≠ 0, T UL=0, T GP=0 situation.
As shown in Figure 5, the ratio of supposing lower/upper row time slot is 4: 3, TS 0～TS 3Be descending time slot, TS 4～TS 6Be ascending time slot, T DLBe inserted into TS 0With TS 1Between, synchronizing signal can be placed on T DLUpper transmission, uplink random access signal is at TS 4～TS 6In any one or a plurality of continuous time slot on send.
Correspondingly, in the 5ms of field duration, the base station is successively at the 1st general descending time slot TS 0, on special descending time slot, a M-1 general descending time slot after transmitted signal, then receive signal on N general ascending time slot.
(1) T DLBe positioned at TS 0Afterwards, synchronizing signal P/S-SCH is at TS 0Latter two symbol or T DLUpper transmission;
(2) uplink random access signal is at TS i+1～TS n-1In one or more continuous time slot on send.
Parameter designing 3: be applicable to Typical Disposition 3.
n＝7
T slot＝662.5us
T special＝5000-7×662.5＝362.5us
T DL＝362.5us
T UL＝0
T GP＝0
T CP-normal1＝8.33us，T CP-normal2＝6.77us
T CP-extended＝16.14us
Under this parameter designing, the duration of each general time slot is 662.5us.When using the regular circulation prefix, each general time slot comprises 9 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of the Cyclic Prefix of first symbol is T CP-normal1=8.33us, the duration of the Cyclic Prefix of all the other each symbols is T CP-normal2=6.77us; When using extended cyclic prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=16.14us.Synchronizing signal can be at first descending time slot TS 0Send on latter two symbol, also can be at T DLUpper transmission.T DLDuration be 362.5us, can comprise 5 or 4 symbols with Cyclic Prefix, wherein 2 symbols can be used to send the P/S-SCH signal, the uplink random signal can send on one or more continuous ascending time slots arbitrarily.
The field of configuration 4:5ms comprise the isometric general time slot of n and 1 special up, namely work as T DL=0, T UL≠ 0, T GP=0 situation.
As shown in Figure 6, the ratio of supposing lower/upper row time slot is 4: 3, TS 0～TS 3Be descending time slot, TS 4～TS 6Be ascending time slot, T ULBe positioned at TS 4Before, synchronizing signal can be placed on TS 0Upper transmission, uplink random access signal is at T ULAnd TS 4～TS 6In any one or a plurality of continuous time slot on send.
Correspondingly, in the 5ms of field duration, the base station then receives signal successively on special ascending time slot and N general ascending time slot after transmitted signal on the general descending time slot of M.
(1) synchronizing signal P/S-SCH is at TS 0Send on latter two symbol.
(2) T ULBe positioned at TS i+1Before, the uplink random signal sends in the above, to support little coverage requirement; Perhaps, the uplink random signal is at T ULAnd TS i+1～TS n-1In any one or a plurality of continuous slot on send, to support larger covering requirement.
Parameter designing 4: be applicable to above Typical Disposition 4.
n＝7
T slot＝662.5us
T special＝5000-7×662.5＝362.5us
T DL＝0
T UL＝362.5us
T GP＝0
T CP-normal1＝8.33us，T CP-normal2＝6.77us
T CP-extended＝16.14us
Under this parameter designing, the duration of each general time slot is 662.5us.When using the regular circulation prefix, each general time slot comprises 9 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of the Cyclic Prefix of first symbol is T CP-normal1=8.33us, the duration of the Cyclic Prefix of all the other each symbols is T CP-normal2=6.77us; When using extended cyclic prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-extended=16.14us.Synchronizing signal is fixed on sending on latter two symbol of first descending time slot.T ULDuration be 362.5us, can comprise 5 or 4 up symbols with Cyclic Prefix, under little coverage requirement, can be used for sending uplink random access signal; When needs were supported large coverage, the uplink random signal can be at T ULAnd TS i+1～TS 6In any one or a plurality of continuous slot on send.
The field of configuration 5:5ms comprises n isometric general time slot and GP, namely works as T DL=0, T UL=0, T GP≠ 0 situation.
As shown in Figure 7, the ratio of supposing lower/upper row time slot is 4: 3, TS 0～TS 3Be descending time slot, TS 4～TS 6Be ascending time slot, the time that each time slot continues is identical, T GPBe positioned at TS 3With TS 4Between, switch to the protection interval of ascending time slot as descending time slot.Simultaneously, synchronizing signal is fixed on TS 0Upper transmission, uplink random access signal is at TS 4～TS 6In any one or a plurality of continuous time slot on send.
Correspondingly, in the 5ms of field duration, the base station is being protected not transmitted signal of interval, then receiving signal on N general ascending time slot after M general descending time slot transmitted signal.
(1) synchronizing signal P/S-SCH is at TS 0Send on latter two symbol;
(2) T GPBe positioned at TS iWith TS i+1Between;
(3) uplink random access signal is at TS i+1～TS n-1In any one or a plurality of continuous time slot on send.
Parameter designing 5: be applicable to above Typical Disposition 5.
n＝7
T slot＝713.54us
T special＝5000-7×713.54＝5.22us
T DL＝0
T UL＝0
T GP＝5.22us
T CP-normal＝4.69us
T CP-extended1＝22.92us，T CP-extended2＝22.4us
Under this parameter designing, the duration of each general time slot is 713.54us, and when using the regular circulation prefix, each general time slot comprises 10 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of each Cyclic Prefix is T CP-normal=4.69us; When using extended cyclic prefix, each general time slot comprises 8 up/down row symbols, and the duration of each symbol is T Symbol=66.67us, the duration of the Cyclic Prefix that first and second symbol is corresponding is T CP-extended1=22.92us, the duration of the Cyclic Prefix that all the other each symbols are corresponding is T CP-extended2=22.4us.The duration of GP is T GP=5.22us.Synchronizing signal is fixed on latter two symbol of first descending time slot and sends, and uplink random access signal is sending on one or more continuous ascending time slots arbitrarily.
Certainly; the present invention also can have other various embodiments; in the situation that do not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (12)

1. the transmission method of a TDD system signal, is characterized in that,
In the 5ms duration of a field of radio frames, the base station is transmitted signal on M general descending time slot, receives signal on N general ascending time slot; General time slot, comprise described general descending time slot and described general ascending time slot, the duration of described general time slot all equates, remaining duration is the special descending time slot of transmitted signal and/or the protection interval of non-transmitted signal, perhaps remaining duration is the special ascending time slot of reception signal and/or the protection interval of non-transmitted signal, and M, N are positive integer;
described special descending time slot is inserted into front or the back of any one general descending time slot, described special ascending time slot is inserted into front or the back of any one general ascending time slot, when special descending time slot is positioned at the back of first general time slot, synchronizing signal sends on described special descending time slot, perhaps send on first general descending time slot, uplink random access signal sends on described special ascending time slot, perhaps sending on one or more continuous general ascending time slot arbitrarily, when protecting the interval to be not equal to zero, switch to the protection interval of ascending time slot as descending time slot.
2. transmission method as claimed in claim 1, is characterized in that,
Remaining duration is special descending time slot and protection interval, and in the duration of a field, described base station is successively at first general descending time slot TS 0, on described special descending time slot, a M-1 general descending time slot after transmitted signal; transmitted signal not on described protection interval; receive signal again on N general ascending time slot; synchronizing signal sends on first general descending time slot or described special descending time slot, and uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
3. transmission method as claimed in claim 2, is characterized in that, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
The first configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=675us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=25us;
Use regular circulation prefix T in general time slot CP-normal=8.33us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at first general descending time slot TS 0Send synchronizing signal on latter two symbol;
The second configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=666.67us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=83.31us;
When using the regular circulation prefix in general time slot, each general time slot comprises 9 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=8.33us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=7.29us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.67us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at first general descending time slot TS 0Send synchronizing signal on latter two symbol;
The third configuration mode
Described M and N sum are 8, the duration T of described general time slot Slot=590.625us, the duration T of special descending time slot DL=250us, the protection interval duration T GP=25 μ s;
When using the regular circulation prefix in general time slot, each general time slot comprises 8 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, the Cyclic Prefix duration of first symbol is T CP-normal1=9.9us, the Cyclic Prefix duration of all the other symbols is T CP-normal2=6.77us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises the descending OFDM symbol that 3 Cyclic Prefix are 16.67us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at first general descending time slot TS 0Send synchronizing signal on latter two symbol;
The 4th kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=642.2us, the duration T of special descending time slot DL=500us, the protection interval duration T GP=4.6us;
When using the regular circulation prefix in general time slot, each general time slot comprises 9 upstream or downstream symbols, and the duration of each symbol is T Symbol=66.67us, each Cyclic Prefix duration T CP-normal=4.68us; Perhaps, general time slot uses extended cyclic prefix, and the Cyclic Prefix duration of first symbol is T CP-extended1=14.06us, the duration of the Cyclic Prefix of all the other symbols is T CP-extended2=13.5us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises descending OFDM symbol or 6 OFDM symbols that Cyclic Prefix is 16.67us that 7 Cyclic Prefix are 4.68us, sends synchronizing signal on two OFDM symbols therein; Perhaps, at first general descending time slot TS 0Send synchronizing signal on latter two symbol.
4. transmission method as claimed in claim 1, is characterized in that,
Remaining duration is special ascending time slot and protects the interval; in the duration of a field; described base station is successively after transmitted signal on M general descending time slot; transmitted signal not on described protection interval; receive signal successively on described special ascending time slot and N general ascending time slot again, described synchronizing signal is at first general descending time slot TS 0Upper transmission, described uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
5. transmission method as claimed in claim 4, is characterized in that, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
The first configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=675us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=25us;
Use regular circulation prefix T in general time slot CP-normal=8.33us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At first general descending time slot TS 0The described synchronizing signal of upper transmission;
The second configuration mode
Described M and N sum are 7, the duration T of described general time slot Slot=666.67us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=83.31us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other symbols use regular circulation prefix T CP-normal2During=7.29us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.67us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At first general descending time slot TS 0The described synchronizing signal of upper transmission;
The third configuration mode
Described M and N sum are 8, the duration T of described general time slot Slot=590.625us, the duration T of special ascending time slot UL=250us, the protection interval duration T GP=25us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=9.9us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=17.71us, each general time slot comprises 7 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At first general descending time slot TS 0The described synchronizing signal of upper transmission.
6. transmission method as claimed in claim 1, is characterized in that,
Remaining duration is special descending time slot, and in the duration of a field, described base station is successively at first general descending time slot TS 0, on described special descending time slot, a M-1 general descending time slot after transmitted signal, receive signal again on N general ascending time slot, described synchronizing signal sends on first general descending time slot or described special descending time slot, and described uplink random access signal is sending on one or more continuous general ascending time slots arbitrarily.
7. transmission method as claimed in claim 6, is characterized in that, described field duration is 5ms, and in field, the duration of each time slot adopts a kind of in following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=662.5us, the duration T of special descending time slot DL=362.5us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.14us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
Described special descending time slot comprises 4 or 5 descending OFDM symbols with Cyclic Prefix, sends synchronizing signal on two OFDM symbols therein; Perhaps, at first general descending time slot TS 0Latter two symbol on send described synchronizing signal.
8. transmission method as claimed in claim 1, is characterized in that,
Remaining duration is special ascending time slot, in the duration of a field, described base station then receives signal successively after transmitted signal on the general descending time slot of M successively on described special ascending time slot, a N general ascending time slot, described synchronizing signal is at described first general descending time slot TS 0Upper transmission, described accidental access signal is sending on one or more continuous general ascending time slots arbitrarily.
9. transmission method as claimed in claim 8, is characterized in that, described field duration is 5ms, and in field, the duration of each time slot adopts following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=662.5us, the duration T of special ascending time slot UL=362.5us;
In general time slot, first symbol uses regular circulation prefix T CP-normal1=8.33us, all the other each symbols use regular circulation prefix T CP-normal2=6.77us, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, general time slot uses extended cyclic prefix T CP-extended=16.14us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At first general descending time slot TS 0The described synchronizing signal of upper transmission.
10. transmission method as claimed in claim 1, is characterized in that,
Remaining duration is for the protection interval, and in the duration of a field, described base station then receives signal on N general ascending time slot after M general descending time slot transmitted signal, and described synchronizing signal is at first general descending time slot TS 0Upper transmission, described accidental access signal is sending on one or more continuous general ascending time slots arbitrarily.
11. transmission method as claimed in claim 10 is characterized in that, described field duration is 5ms, and in field, the duration of each time slot adopts following configuration mode:
Described M and N sum are 7, the duration T of described general time slot Slot=713.54us, the protection interval duration T GP=5.22us;
Use regular circulation prefix T in general time slot CP-normal=4.69us, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us; Perhaps, in general time slot, the first two symbol uses extended cyclic prefix T CP-extended1=22.92us, all the other each symbols use extended cyclic prefix T CP-extended2=22.4us, each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T Symbol=66.67us;
At first general descending time slot TS 0The described synchronizing signal of upper transmission.
12. as claim 2,4 or 10 described transmission methods, it is characterized in that,
The duration of described protection interval GP is configurable, the granularity is-symbol level of its adjustment.
CN 200710167741 2007-10-28 2007-10-28 TDD system signal transmission method and frame structure Expired - Fee Related CN101159485B (en)

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