CN101159484A - TDD system signal transmitting method and frame structure - Google Patents
TDD system signal transmitting method and frame structure Download PDFInfo
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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 of a half-frame of wireless frames, the base station firstly transmits signal on M downlink special time slots, thereafter does not transmit signal on a protective gap, and then receives signal on N uplink special time slots; a lengthened uplink and/or downlink time slot is included in the uplink time slots and/or the downlink time slots, other time slots, including normal uplink time slots and normal downlink time slots, are the normal time slots of equal length, and the time length of the lengthened time slot is more than that of the normal time slots. A frame structure used is that within the time length of a half-frame of wireless frames, each half frame includes M downlink time slots, one protective gap and N uplink time slots, a lengthened uplink and/or downlink time slot is included in the uplink time slots and/or the downlink time slots, and other time slots are the normal time slots of equal length, wherein M and N are integers. The invention resolves the problem of wasting DwPTS and UpPTS resources in the prior system; when different time slot ratios are used, the position of GP is not fixed.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of sending 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 the time slot of 7 general time slots (also claiming subframe) and 3 lengthenings again: descending pilot frequency time slot DwPTS, protection be GP and uplink pilot time slot UpPTS at interval.
Time slot DwPTS, the GP of 3 lengthenings and the total length of UpPTS equal 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 the bandwidth in the middle of this time slot, and other bandwidth of this time slot does not then 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 that is mainly used in uplink synchronous inserts signal and sends at this time slot.
In 7 general time slots, the length of each time slot is 675us, and for simplified system realizes that TS0 always is 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: TS1～TS6 can be assigned as up or descending time slot flexibly 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 is usually at several symbols of the front of time slot, and the DSCH Downlink Shared Channel that sends user's general data is then at several symbols of the back 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, control channel signals is usually in the position, both sides of system bandwidth, and the duration is a time slot; The Uplink Shared Channel signal that sends user's general data is then in the rest position of system bandwidth, and the duration also is 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,, just can avoid the mutual interference mutually of this tdd systems and TD-SCDMA system signal effectively as long as the uplink and downlink timeslot switching proportion that this system is provided with and TD-SCDMA system is identical.
But there are the following problems for this tdd systems in front:
1, GP be provided with very dumb.In this system, the GP slot length equals 50us.When system need 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 reserving UpPTS time slot and TS1 is that the GP time slot (is noted, the part symbol that cannot reserve TS1 is GP, this be because ascending control channel usually on the both sides of system bandwidth, duration is a time slot, if the part symbol of reserving TS1 is as GP, the receptivity of ascending control channel can seriously descend; Also cannot reserve DwPTS or/and the part symbol of TS0 as GP, this is because master sync signal P-SCH sends on DwPTS, and auxiliary synchronous signals S-SCH sends at last symbol of TS0, if reserve DwPTS or/and the part symbol of TS0 is GP, the user just possibly can't receive P-SCH or P/S-SCH signal, at first need the signal that receives and the P/S-SCH signal is a subscriber access system, the user can't correctly receive the P/S-SCH signal, also just can't insert 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 subscriber access system at first needs the signal that receives, and therefore, the power of P/S-SCH signal is understood usually greater than other signal.Under cellular environment,, can have a strong impact on the receptivity of ascending time slot signal because the power of P/S-SCH signal is bigger;
3, the utilization ratio of DwPTS time slot is not high.When the bandwidth ratio broad of system, owing to have only of middle bandwidth (1.25MHz) transmission of P-SCH signal in system bandwidth, 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 provides a kind of sending method and frame structure of TDD system signal, the signal that make to send both can with existing TD-SCDMA system adjacent frequency coexistence, can solve the problem of above-mentioned existence again.
The technical solution used in the present invention is:
The invention provides a kind of transmission method of TDD system signal; comprise: in the duration of a field of radio frames; the base station sends signal earlier on M descending time slot; in a protection at interval, do not send signal afterwards; received signal on N ascending time slot again; up and/or the descending time slot that comprises a lengthening in described ascending time slot and/or the descending time slot; all the other time slots; comprise that general ascending time slot and general descending time slot are isometric general time slot; the duration of the time slot of described lengthening is greater than general time slot, and M, N are positive integer.
Further; in the duration of a field; described base station is successively after sending signal on the individual general descending time slot of descending time slot, the M-1 of a lengthening; in described protection at interval, do not send signal; received signal on N ascending time slot then; comprise the ascending time slot of a lengthening in the described N ascending time slot, synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
Further; in the duration of a field; described base station sends signal successively on first general descending time slot and M-1 descending time slot; the descending time slot that comprises a lengthening in the described M-1 descending time slot; in described protection at interval, do not send signal afterwards; received signal on N ascending time slot comprises an ascending time slot that extends in the described N ascending time slot then, and synchronizing signal is at first general descending time slot TS
0Last transmission, uplink random insert signal and are sending on one or more continuous ascending time slots arbitrarily.
Further; in the duration of a field; described base station is successively after sending signal on the individual general descending time slot of descending time slot, the M-1 of a lengthening; in described protection at interval, do not send signal; received signal on the general ascending time slot of N then; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
Further; in the duration of a field; described base station sends signal successively on first general descending time slot and M-1 descending time slot; the descending time slot that comprises a lengthening in the described M-1 descending time slot; in described protection at interval, do not send signal afterwards; received signal on the general ascending time slot of N then, synchronizing signal is at first general descending time slot TS
0Last transmission, uplink random insert signal and are sending on one or more continuous ascending time slots arbitrarily.
Further; in the duration of a field; described base station is successively after M general descending time slot sends signal; in described protection at interval, do not send signal; received signal on N ascending time slot then; comprise the ascending time slot of a lengthening in the described N ascending time slot, synchronizing signal sends on first descending time slot, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
Further, in the duration of a field, described base station after the general descending time slot of M sends signal, does not send signal successively in described protection at interval, and N general received signal on the ascending time slot, synchronizing signal is at first general descending time slot TS then
0Last transmission, uplink random insert signal and are sending on one or more continuous ascending time slots arbitrarily.
Further, the ascending time slot of described lengthening is first ascending time slot in the described N ascending time slot.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=25us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
Use regular circulation prefix T in the 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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us, the ascending time slot of described lengthening removes and to comprise the general outer symbol of going up time slot, also comprises 1 Cyclic Prefix and be 16.67 up symbol;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=81us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us; The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 1 Cyclic Prefix is 16.67us.
Further, described synchronizing signal sending on latter two OFDM symbol at first descending time slot.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the 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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the 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;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extended1=13.02us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=12.5us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extended1=22.92us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=22.4us.
The present invention also provides a kind of frame structure of tdd systems:
In the duration of a field of radio frames; each field comprises M descending time slot, a protection is last at interval and N ascending time slot; up and/or the descending time slot that comprises a lengthening in described ascending time slot and/or the descending time slot; all the other time slots are isometric general time slot; comprise general ascending time slot and general descending time slot; the duration of the time slot of described lengthening is greater than general time slot, and M, N are positive integer.
Further; described field comprises descending time slot, a M-1 general descending time slot, described protection interval and N ascending time slot of lengthening successively; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
Further; described field comprises first general descending time slot, a M-1 descending time slot, described protection interval and N ascending time slot successively; the descending time slot that comprises a lengthening in the described M-1 descending time slot; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on the descending time slot of lengthening, and uplink random inserts on signal one or more continuous ascending time slots in office and sends.
Further; described field comprises descending time slot, a M-1 general descending time slot, described protection interval and N general ascending time slot of a lengthening successively; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous general ascending time slots arbitrarily.
Further; described field comprises first general descending time slot, a M-1 descending time slot, described protection interval and N general ascending time slot successively; the descending time slot that comprises a lengthening in the described M-1 descending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous general ascending time slots arbitrarily.
Further; described field comprises M general descending time slot, described protection interval and N ascending time slot successively; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
Further; described field comprises M general descending time slot, described protection interval and N general ascending time slot successively; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
Further, the ascending time slot of lengthening is first ascending time slot in the described N ascending time slot.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=25us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
Use regular circulation prefix T in the 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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us, the ascending time slot of described lengthening removes and to comprise the general outer symbol of going up time slot, also comprises 1 Cyclic Prefix and be 16.67 up symbol;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=81us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us; The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 1 Cyclic Prefix is 16.67us.
Further, described synchronizing signal sending on latter two OFDM symbol at first descending time slot.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the 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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the 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;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us.
Further, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extended1=13.02us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=12.5us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extended1=22.92us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=22.4us.
Adopt such scheme of the present invention, can have following technique effect:
1. no longer comprise time slot DwPTS and UpPTS, solved the problem of DwPTS and the UpPTS wasting of resources in the original system;
2.5ms field the inside comprise 7 business time-slots, wherein synchronizing signal is fixed on first descending time slot and sends;
3. with respect to synchronizing channel, when adopting different time slot ratios, the GP position is unfixing;
4. synchronizing signal is away from the up-downgoing switching point, thereby even guarantee that synchronizing signal has adopted power ascension, bring very large disturbance also can not for the up reception of other base station;
5. at interval the duration of GP can flexible configuration in protection, as can increasing the duration of GP by the punching of downlink data symbol, the growth granularity is-symbol level of GP time.
Description of drawings
Fig. 1 is the schematic diagram of a kind of TDD system signal frame structure in the prior art;
Fig. 2 is the sending method flow chart of TDD system signal in the embodiment of the invention;
Fig. 3 is at T in the embodiment of the invention
DL≠ 0, T
UL≠ 0, T
GPA kind of frame structure schematic diagram under ≠ 0 situation;
Fig. 4 is at T in the embodiment of the invention
DL≠ 0, T
UL≠ 0, T
GPAnother kind of frame structure schematic diagram under ≠ 0 situation;
Fig. 5 is at T in the embodiment of the invention
DL≠ 0, T
UL=0, T
GPA kind of frame structure schematic diagram under ≠ 0 situation;
Fig. 6 is at T in the embodiment of the invention
DL≠ 0, T
UL=0, T
GPAnother kind of frame structure schematic diagram under ≠ 0 situation;
Fig. 7 is at T in the embodiment of the invention
DL=0, T
UL≠ 0, T
GPA kind of frame structure schematic diagram under ≠ 0 situation;
Fig. 8 is at T in the embodiment of the invention
DL=0, T
UL=0, T
GPA kind of frame structure schematic diagram under ≠ 0 situation.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described in detail.
A kind of sending method of TDD system signal; may further comprise the steps: in the duration of a field of radio frames; the base station sends signal earlier on M descending time slot; in a protection at interval, do not send signal afterwards; received signal on N ascending time slot again; up and/or the descending time slot that comprises a lengthening in described ascending time slot and/or the descending time slot; all the other time slots are isometric general time slot; comprise general ascending time slot and general descending time slot; the duration of the time slot of described lengthening is greater than general time slot, and M, N are positive integer.
Adopt the physical layer frame structure of above-mentioned method for transmitting signals to be: in the duration of a field of radio frames, to comprise M descending time slot, a protection interval and a N ascending time slot; Up and/or the descending time slot that comprises a lengthening in described ascending time slot and/or the descending time slot, all the other time slots are isometric general time slot, comprise general ascending time slot and general descending time slot, the duration of the time slot of described lengthening is greater than general time slot, and M, N are positive integer
With the field that contains 7 general time slots is example, comprises two 5ms fields that length is identical in the radio frames of 10ms, and wherein the field of each 5ms comprises 7 time slots, is designated as TS
0～TS
6, the duration of each general time slot (comprising general ascending time slot and general descending time slot) is T
Slot, 5ms deducts and is designated as remaining time that duration of 7 times of general time slots looks immediately T
Special, then with T
SpecialBe divided into 3 parts, be designated as T respectively
DL, T
GPAnd T
UL, above time variable satisfies following relation:
7×T
slot+T
special＝5ms
T
DL+T
GP+T
UL＝T
special
The present invention increases T with the duration of a general descending time slot
DLAfter obtain the descending time slot of a lengthening, the duration of a general ascending time slot is increased T
ULAfter obtain the ascending time slot of a lengthening, T
GPProtection interval as last/descending time slot switching.
According to above thought, can divide a field that contains the 5ms of 7 general time slots as follows:
Comprise the ascending time slot of the descending time slot of 1 lengthening, 1 lengthening, 5 isometric general time slots in the field of 5ms, and GP (promptly works as T
UL, T
DL, T
GPAll be not equal to 0 situation);
Perhaps, comprise the descending time slot of 1 lengthening, 6 isometric general time slots in the field of 5ms, and GP (promptly works as T
UL=0, T
DLAnd T
GPBe not equal to 0 situation);
Perhaps, comprise the ascending time slot of 1 lengthening, 6 isometric general time slots in the field of 5ms, and GP (works as T
DL=0, T
ULAnd T
GPBe not equal to 0 situation);
Perhaps, comprise 7 isometric general time slots and GP in the field of 5ms and (promptly work as T
ULAnd T
DLEqual 0, T
GPBe not equal to 0 situation).
According to above core concept, 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～TS
6Be ascending time slot, wherein i≤5:
Comprise the ascending time slot of the descending time slot of 1 lengthening, 1 lengthening, 5 isometric general time slots in the field of configuration 1-1:5ms, and GP, T just worked as
DL≠ 0, T
UL≠ 0, T
GP≠ 0 situation.
As shown in Figure 3, suppose that the following/ascending time slot ratio of this radio frames is 4: 3, TS
0'～TS
3Be descending time slot, TS
4'～TS
6Be ascending time slot, wherein TS
0' be the descending time slot of lengthening, its duration is the duration of a general time slot to add T
DLDuration; TS
4' be the ascending time slot of lengthening, its duration is the duration of a general time slot to add T
ULDuration.Simultaneously, synchronizing signal P/S-SCH is fixed on TS
0' latter two symbol on send, uplink random inserts signal at TS
4'～TS
6In any one or a plurality of continuous ascending time slot on send.
In the duration of a field of radio frames; the base station sends signal successively on the descending time slot of a lengthening and 3 general descending time slots; in a protection at interval, do not send signal afterwards, again received signal on the ascending time slot of a lengthening and 2 general ascending time slots successively.In another embodiment, the ascending time slot of lengthening also can be the 2nd or the 3rd ascending time slot.
(1) with TS
0With T
DLBe merged into the descending time slot TS of a lengthening
0', TS
0' the duration is:
TS
0′＝T
slot+T
DL；
(2) with TS
I+1And T
ULBe merged into the ascending time slot TS of a new lengthening
I+1', TS
I+1' the duration is:
TS
i+1′＝T
slot+T
UL；
(3) T
GPBe positioned at TS
iWith TS
I+1' between;
(4) synchronizing signal P/S-SCH is at first descending time slot TS
0' send on latter two symbol;
(5) uplink random inserts signal at TS
I+1'～TS
6In any one or a plurality of continuous time slot on send.
The field of configuration 1-2:5ms comprises the ascending time slot of the descending time slot of 1 lengthening, 1 lengthening, 5 isometric general time slots, and GP, just works as T
DL≠ 0, T
UL≠ 0, T
GP≠ 0 situation.
As shown in Figure 4, suppose that the following/ascending time slot ratio of this radio frames is 4: 3, TS
0～TS
3' be descending time slot, TS
4'～TS
6Be ascending time slot, wherein TS
3' be the descending time slot of lengthening, its duration is the duration of a general time slot to add T
DLDuration, TS
4' be the ascending time slot of lengthening, its duration is the duration of a general time slot to add T
ULDuration.Simultaneously, synchronizing signal P/S-SCH is fixed on TS
0Latter two symbol on send, uplink random inserts signal at TS
4'～TS
6In any one or a plurality of continuous ascending time slot on send.
In the duration of a field of radio frames; the base station sends signal earlier successively on the descending time slot of 3 general descending time slots and a lengthening; in a protection at interval, do not send signal afterwards, again received signal on the ascending time slot of a lengthening and 2 general ascending time slots successively.
(1) with TS
iWith T
DLBe merged into the descending time slot TS of a lengthening
i', TS
i' the duration is:
TS
i′＝T
slot+T
DL；
(2) with TS
I+1And T
ULBe merged into the ascending time slot TS of a lengthening
I+1', TS
I+1' the duration is:
TS
i+1′＝T
slot+T
UL；
(3) T
GPBe positioned at TS
i' with TS
I+1' between;
(4) synchronizing signal P/S-SCH is at TS
0Send on latter two symbol;
(5) uplink random inserts signal at TS
I+i'～TS
6In any one or a plurality of continuous time slot on send.
Further provide some canonical parameter designs of above configuration below, but be not limited to these parameter designing:
Parameter designing 1-1: be applicable to Typical Disposition 1-1 and 1-2.
T
slot＝675us
T
special＝5000-7×675＝275us
T
DL＝166.67us
T
UL＝83.33us
T
GP＝25us
T
CP-normal＝8.33us
T
CP-extended＝17.71us
Under this parameter designing, the duration of general time slot is 675us.When using the regular circulation prefix, each general time slot comprises on 9/descending symbol, the duration T of each symbol
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-normal=8.33us; When using extended cyclic prefix, each general time slot comprises on 8/descending symbol, the duration T of each symbol
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-extended=17.71us.T
DLComprise the descending symbol that 2 Cyclic Prefix are 16.67us, T
ULComprise the up symbol that 1 Cyclic Prefix is 16.67us.Under this parameter designing,, work as T for Typical Disposition 1-1
DLWith TS
0Be merged into new time slot TS
0' after, synchronizing signal P/S-SCH can be at T
DLTwo symbols send, just at TS
0' send on latter two symbol; Uplink random inserts signal and sends on one or more continuous ascending time slots.
On address in the following various parameter configuration, descending time slot can adopt the OFDM symbol, uply adopts the symbol of other symbol that has Cyclic Prefix as sending according to the single carrier mode, but also is not limited to this.
Parameter designing 1-2: be applicable to Typical Disposition 1-1 and 1-2.
T
slot＝667us
T
special＝5000-7×667＝331us
T
DL＝166.67us
T
UL＝83.33us
T
GP＝81us
T
CP-normal1＝8.33us，T
CP-normal2＝7.29us
T
CP-extended＝16.67us
Under this parameter designing, the duration of general time slot is 667us, and when using the regular circulation prefix, each general time slot comprises on 9/descending symbol, and the duration of each symbol is T
Symbol=66.67us, the Cyclic Prefix of first symbol are T
CP-normal1=8.33us, the Cyclic Prefix of all the other symbols are T
CP-normal2=7.29us; When using extended cyclic prefix, each general time slot comprises on 8/descending symbol, and the duration of symbol is T
Symbol=66.67us, T
CP-extended=16.67us.T
DLComprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us, T
ULComprise the up symbol that 1 Cyclic Prefix is 16.67us.Under this parameter designing,, work as T for Typical Disposition 1-1
ULWith TS
0Be merged into new time slot TS
0' after, the P/S-SCH synchronizing signal can be at T
DLTwo OFDM symbols send.Just at TS
0' latter two OFDM symbol on send, uplink random inserts signal and sends on one or more continuous ascending time slots.
The field of configuration 2-1:5ms comprises the descending time slot of 1 lengthening, 6 isometric general time slots, and GP, just works as T
DL≠ 0, T
UL=0, T
GP≠ 0 situation.
As shown in Figure 5, the ratio of supposing the following/ascending time slot of this radio frames is 4: 3, TS
0'～TS
3Be descending time slot, TS
4～TS
6Be ascending time slot, wherein TS
0' be the descending time slot of lengthening, its duration is the duration of a general time slot to add T
DLDuration.Simultaneously, synchronizing signal P/S-SCH is fixed on TS
0' latter two symbol on send, uplink random inserts signal at TS
4～TS
6In any one or a plurality of continuous ascending time slot on send.
In the duration of a field of radio frames, the base station sends signal successively on the descending time slot of a lengthening and 3 general descending time slots, does not send signal afterwards in a protection at interval, again received signal on 3 general ascending time slots.
(1) with TS
0With TD
LBe merged into the descending time slot TS of a lengthening
0', TS
0' the duration is:
TS
0′＝T
slot+T
DL；
(2) because T
UL=0, there is not the ascending time slot that extends;
(3) T
GPBe positioned at TS
iWith TS
I+1Between;
(4) synchronizing signal P/S-SCH is at TS
0' send on latter two symbol;
(5) uplink random inserts signal at TS
I+1～TS
6In any one or a plurality of continuous time slot on send.
The field of configuration 2-2:5ms comprises the descending time slot of 1 lengthening, 6 isometric general time slots, and GP, just works as T
DL≠ 0, T
UL=0, T
GP≠ 0 situation.
As shown in Figure 6, suppose that the following/ascending time slot ratio of this radio frames is 4: 3, TS
0～TS
3' be descending time slot, TS
4～TS
6Be ascending time slot, wherein TS
3' be the descending time slot of lengthening, its duration is the duration of a general time slot to add T
DLDuration.Simultaneously, synchronizing signal P/S-SCH is fixed on TS
0Latter two symbol on send, uplink random inserts signal at TS
4～TS
6In any one or a plurality of continuous ascending time slot on send.
In the duration of a field of radio frames, the base station sends signal successively on the descending time slot of 3 general descending time slots and a lengthening, does not send signal afterwards in a protection at interval, again received signal on 3 general ascending time slots.
(1) with TS
iWith TD
LBe merged into the descending time slot TS of a lengthening
i', TS
i' the duration is:
TS
i′＝T
slot+T
DL；
(2) because T
UL=0, there is not the ascending time slot that extends;
(3) T
GPBe positioned at TS
i' with TS
I+1Between;
(4) synchronizing signal P/S-SCH is at TS
0Send on latter two symbol;
(5) uplink random inserts signal at TS
I+1～TS
6In any one or a plurality of continuous time slot on send.
Parameter designing 2-1: be applicable to Typical Disposition 2-1 and 2-2.
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 general time slot is 675us.When using the regular circulation prefix, each general time slot comprises on 9/descending symbol, and the duration of each symbol is T
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-normal=8.33us; When using extended cyclic prefix, each general time slot comprises on 8/descending symbol, and the duration of each symbol is T
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-extended=17.71us.T
DLComprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us.T
DLCan be merged into a new descending time slot with any one descending time slot.Synchronizing signal P/S-SCH is fixed on first descending time slot and sends, and uplink random inserts signal and sends on one or more continuous ascending time slots.
Parameter designing 2-2: be applicable to Typical Disposition 2-1 and 2-2.
T
slot＝667us
T
special＝5000-7×667＝331us
T
DL＝250us
T
UL＝0
T
GP＝81us
T
CP-normal1＝8.33us，T
CP-normal2＝7.29us
T
CP-extended＝16.67us
Under this parameter designing, the duration of general time slot is 667us, and when using the regular circulation prefix, each general time slot comprises on 9/descending symbol, and the duration of each symbol is T
Symbol=66.67us, the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of all the other each symbols
CP-normal2=7.29us; When using extended cyclic prefix, each general time slot comprises on 8/descending symbol, the duration T of each symbol
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-extended=16.67us.T
DLComprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us.T
DLCan be merged into a new descending time slot with any descending time slot.Synchronizing signal is fixed on first descending time slot and sends, and uplink random inserts signal and sends on one or more continuous ascending time slots.
The field of configuration 3:5ms comprises the ascending time slot of 1 lengthening, 6 isometric general time slots, and GP, just works as T
DL=0, T
UL≠ 0, T
GP≠ 0 situation.
As shown in Figure 7, suppose that the following/ascending time slot ratio of this radio frames is 4: 3, TS
0～TS
3Be descending time slot, TS
4'～TS
6Be ascending time slot, wherein TS
4' be the ascending time slot of lengthening, its duration is the duration of a general time slot to add T
ULDuration.Simultaneously, synchronizing signal P/S-SCH is fixed on TS
0Latter two symbol on send, uplink random inserts signal at TS
4'～TS
6In any one or a plurality of continuous ascending time slot on send.
In the duration of a field of radio frames, the base station earlier sends signal on 4 general descending time slots, does not send signal afterwards in a protection at interval, again received signal on the ascending time slot of a lengthening and 2 general ascending time slots successively.
(1) because T
DL=0, there is not the descending time slot that extends;
(2) with TS
I+1And T
ULBe merged into the ascending time slot TS of a new lengthening
I+1', TS
I+1' the duration is:
TS
i+1′＝T
slot+T
UL
(3) T
GPBe positioned at TS
iWith TS
I+1' between.
(4) synchronizing signal P/S-SCH is at TS
0Send on latter two symbol.
(5) uplink random inserts signal at TS
I+1'～TS
6In any one or a plurality of continuous time slot on send.
Parameter designing 3-1: be applicable to Typical Disposition 3.
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 general time slot is 675us.When using the regular circulation prefix, each general time slot comprises on 9/descending symbol, and the duration of each symbol is T
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-normal=8.33us; When using extended cyclic prefix, each general time slot comprises on 8/descending symbol, and the duration of each symbol is T
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-extended=17.71us.T
ULComprise the up symbol that 3 Cyclic Prefix are 16.67us.T
ULCan be merged into a new ascending time slot with any ascending time slot.Synchronizing signal is fixed on first descending time slot and sends, and uplink random inserts signal and sends on one or more continuous ascending time slots.
Parameter designing 3-2: be applicable to Typical Disposition 3.
T
slot＝667us
T
special＝5000-7×667＝331us
T
DL＝0
T
UL＝250us
T
GP＝81us
T
CP-normal1＝8.33us，T
CP-normal2＝7.29us
T
CP-extended＝16.67us
Under this parameter designing, the duration of general time slot is 667us, and when using the regular circulation prefix, each general time slot comprises on 9/descending symbol, the duration T of each symbol
Symbol=66.67us, the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of all the other symbols
CP-normal2=7.29us; When using extended cyclic prefix, each general time slot comprises on 8/descending symbol, the duration T of each symbol
Symbol=66.67us, each Cyclic Prefix duration T
CP-exetended=16.67us.T
ULComprise the up symbol that 3 Cyclic Prefix are 16.67us.T
ULCan be merged into a new ascending time slot with any one ascending time slot.Synchronizing signal is fixed on first descending time slot and sends, and uplink random inserts signal and sends on one or more continuous ascending time slots.
The field of configuration 4:5ms comprises 7 isometric general time slot and GP, just works as T
DL=0, T
UL=0, T
GP≠ 0 situation.
As shown in Figure 8, suppose that the following/ascending time slot ratio of this radio frames 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.Simultaneously, synchronizing signal P/S-SCH is fixed on TS
0Latter two symbol on send, uplink random inserts signal at TS
4～TS
6In any one or a plurality of continuous ascending time slot on send.
In the duration of a field of radio frames, the base station sends signal earlier on 4 general descending time slots, does not send signal afterwards in a protection at interval, again received signal on 3 general ascending time slots.
(1) because T
DL=0, there is not the descending time slot that extends;
(2) because T
UL=0, there is not the ascending time slot that extends;
(3) T
GPBe positioned at TS
iWith TS
I+1Between;
(4) synchronizing signal P/S-SCH is at TS
0Send on latter two symbol;
(5) uplink random inserts signal at TS
I+1～TS
6In any one or a plurality of continuous time slot on send.
Parameter designing 4-1: be applicable to above Typical Disposition 4.
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＝13.02us，T
CP-extended2＝12.5us
Under this parameter designing, the duration of general time slot is 713.54us.When using the regular circulation prefix, each general time slot comprises on 10/descending symbol, the duration T of each symbol
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-normal=4.69us; When using extended cyclic prefix, each general time slot comprises on 9/descending symbol, and the duration of each symbol is T
Symbol=66.67us, the Cyclic Prefix duration T of preceding two symbol correspondences
CP-extended1=13.02us, the Cyclic Prefix duration T of all the other symbol correspondences
CP-extended2=12.5us.The duration of GP is T
GP=5.22us.Synchronizing signal is fixed on first descending time slot and sends, and uplink random inserts signal and sends on one or more continuous ascending time slots.
Parameter designing 3-2: be applicable to above Typical Disposition 4.
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 general time slot is 713.54us.When using the regular circulation prefix, each general time slot comprises on 10/descending symbol, the duration T of each symbol
Symbol=66.67us, the duration T of each Cyclic Prefix
CP-normal=4.69us; When using extended cyclic prefix, each general time slot comprises on 8/descending symbol, the duration T of each symbol
Symbol=66.67us, the Cyclic Prefix duration T of preceding two symbol correspondences
CP-extended1=22.92us, the Cyclic Prefix duration T of all the other symbol correspondences
CP-extended2=22.4us.The duration T of GP
GP=5.22us.Synchronizing signal is fixed on first descending time slot and sends, and uplink random inserts signal and sends on one or more continuous ascending time slots.
Should illustrate to be that in other embodiments, in the example of the above-mentioned various ascending time slots that comprise lengthening, the ascending time slot of described lengthening also can not be the 1st ascending time slot, also can be the 2nd or the 3rd ascending time slot etc.In the example of the above-mentioned various descending time slots that comprise lengthening, the descending time slot of described lengthening also can not be the 1st or last descending time slot, and the descending time slot in the middle of can being.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (26)
1. the transmission method of a TDD system signal; it is characterized in that; in the duration of a field of radio frames; the base station sends signal earlier on M descending time slot; in a protection at interval, do not send signal afterwards; received signal on N ascending time slot again; up and/or the descending time slot that comprises a lengthening in described ascending time slot and/or the descending time slot; all the other time slots; comprise that general ascending time slot and general descending time slot are isometric general time slot; the duration of the time slot of described lengthening is greater than general time slot, and M, N are positive integer.
2. transmission method as claimed in claim 1 is characterized in that,
In the duration of a field; described base station is successively after sending signal on the individual general descending time slot of descending time slot, the M-1 of a lengthening; in described protection at interval, do not send signal; received signal on N ascending time slot then; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
3. transmission method as claimed in claim 1 is characterized in that,
In the duration of a field; described base station sends signal successively on first general descending time slot and M-1 descending time slot; the descending time slot that comprises a lengthening in the described M-1 descending time slot; in described protection at interval, do not send signal afterwards; received signal on N ascending time slot then; comprise the ascending time slot of a lengthening in the described N ascending time slot, synchronizing signal is at first general descending time slot TS
0Last transmission, uplink random insert signal and are sending on one or more continuous ascending time slots arbitrarily.
4. transmission method as claimed in claim 1 is characterized in that,
In the duration of a field; described base station is successively after sending signal on the individual general descending time slot of descending time slot, the M-1 of a lengthening; in described protection at interval, do not send signal; received signal on the general ascending time slot of N then; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
5. transmission method as claimed in claim 1 is characterized in that,
In the duration of a field; described base station sends signal successively on first general descending time slot and M-1 descending time slot; the descending time slot that comprises a lengthening in the described M-1 descending time slot; in described protection at interval, do not send signal afterwards; received signal on the general ascending time slot of N then, synchronizing signal is at first general descending time slot TS
0Last transmission, uplink random insert signal and are sending on one or more continuous ascending time slots arbitrarily.
6. transmission method as claimed in claim 1 is characterized in that,
In the duration of a field; described base station is successively after M general descending time slot sends signal; in described protection at interval, do not send signal; received signal on N ascending time slot then; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on first descending time slot, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
7. transmission method as claimed in claim 1 is characterized in that,
In the duration of a field, described base station after the general descending time slot of M sends signal, does not send signal successively in described protection at interval, and N general received signal on the ascending time slot, synchronizing signal is at first general descending time slot TS then
0Last transmission, uplink random insert signal and are sending on one or more continuous ascending time slots arbitrarily.
8. as claim 2,3 or 6 described transmission methods, it is characterized in that,
The ascending time slot of described lengthening is first ascending time slot in the described N ascending time slot.
9. as claim 2 or 3 described transmission methods, it is characterized in that the duration of described field is 5ms, the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=25us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
Use regular circulation prefix T in the general time slot
GP-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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us, the ascending time slot of described lengthening removes and to comprise the general outer symbol of going up time slot, also comprises 1 Cyclic Prefix and be 16.67 up symbol;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=81us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us; The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 1 Cyclic Prefix is 16.67us.
10. transmission method as claimed in claim 9 is characterized in that,
Described synchronizing signal sends on latter two OFDM symbol first descending time slot.
11. as claim 4 or 5 described transmission methods, it is characterized in that the duration of described field is 5ms, the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the general time slot
CP-normal=833us, 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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us.
12. transmission method as claimed in claim 6 is characterized in that, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Solt=675us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the 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;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us.
13. transmission method as claimed in claim 7 is characterized in that, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extendel1=13.02us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=12.5us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extended1=22.92us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=22.4us.
14. the frame structure of a tdd systems is characterized in that,
In the duration of a field of radio frames; each field comprises M descending time slot, a protection is last at interval and N ascending time slot; up and/or the descending time slot that comprises a lengthening in described ascending time slot and/or the descending time slot; all the other time slots are isometric general time slot; comprise general ascending time slot and general descending time slot; the duration of the time slot of described lengthening is greater than general time slot, and M, N are positive integer.
15. frame structure as claimed in claim 14 is characterized in that,
Described field comprises descending time slot, a M-1 general descending time slot, described protection interval and N ascending time slot of lengthening successively; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
16. frame structure as claimed in claim 14 is characterized in that,
Described field comprises first general descending time slot, a M-1 descending time slot, described protection interval and N ascending time slot successively; the descending time slot that comprises a lengthening in the described M-1 descending time slot; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
17. frame structure as claimed in claim 14 is characterized in that,
Described field comprises descending time slot, a M-1 general descending time slot, described protection interval and N general ascending time slot of a lengthening successively; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous general ascending time slots arbitrarily.
18. frame structure as claimed in claim 14 is characterized in that,
Described field comprises first general descending time slot, a M-1 descending time slot, described protection interval and N general ascending time slot successively; the descending time slot that comprises a lengthening in the described M-1 descending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous general ascending time slots arbitrarily.
19. frame structure as claimed in claim 14 is characterized in that,
Described field comprises M general descending time slot, described protection interval and N ascending time slot successively; the ascending time slot that comprises a lengthening in the described N ascending time slot; synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
20. frame structure as claimed in claim 14 is characterized in that,
Described field comprises M general descending time slot, described protection interval and N general ascending time slot successively, and synchronizing signal sends on the descending time slot of described lengthening, and uplink random inserts signal and sending on one or more continuous ascending time slots arbitrarily.
21. as claim 15,16 or 19 described frame structures, it is characterized in that,
The ascending time slot of described lengthening is first ascending time slot in the described N ascending time slot.
22. as claim 15 or 16 described frame structures, it is characterized in that the duration of described field is 5ms, the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=25us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
Use regular circulation prefix T in the 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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us, the ascending time slot of described lengthening removes and to comprise the general outer symbol of going up time slot, also comprises 1 Cyclic Prefix and be 16.67 up symbol;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 166.67us, described protection duration T at interval
GP=81us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 83.33us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 2 Cyclic Prefix is the descending OFDM symbol of 16.67us; The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 1 Cyclic Prefix is 16.67us.
23. frame structure as claimed in claim 22 is characterized in that,
Described synchronizing signal sends on latter two OFDM symbol first descending time slot.
24. as claim 17 or 18 described transmission methods, it is characterized in that the duration of described field is 5ms, the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the 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;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the descending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The descending time slot of described lengthening removes the OFDM outer symbol that comprises general descending time slot, and also comprising 3 Cyclic Prefix is the descending OFDM symbol of 16.67us.
25. frame structure as claimed in claim 19 is characterized in that, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=675us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=25us;
Use regular circulation prefix T in the 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;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=667us, the duration of the ascending time slot of described lengthening equals T
SlotAdd 250us, described protection duration T at interval
GP=81us;
When using the regular circulation prefix in the general time slot, each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, wherein the Cyclic Prefix duration T of first symbol
CP-normal1=8.33us, the Cyclic Prefix duration T of other symbol
CP-normal1=7.29us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, Cyclic Prefix duration T
CP-extended=16.67us;
The ascending time slot of described lengthening removes the outer symbol that comprises general ascending time slot, also comprises the up symbol that 3 Cyclic Prefix are 16.67us.
26. frame structure as claimed in claim 20 is characterized in that, the duration of described field is 5ms, and the duration of each time slot adopts a kind of in the following configuration mode in the field:
First kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 9 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extended1=13.02us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=12.5us;
Second kind of configuration mode
Described M and N sum are 7, the duration T of described general time slot
Slot=713.54us, described protection duration T at interval
GP=5.22us;
Use the regular circulation prefix in the general time slot, each general time slot comprises 10 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the duration T of Cyclic Prefix
CP-normal=4.69us; Perhaps, general time slot uses extended cyclic prefix, and each general time slot comprises 8 upstream or downstream symbols, and each symbol duration is T
Symbol=66.67us, the Cyclic Prefix duration T of first and second symbols
CP-extended1=22.92us, the Cyclic Prefix duration T of all the other symbols
CP-extended2=22.4us.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010069259A1 (en) * | 2008-12-17 | 2010-06-24 | 华为技术有限公司 | A carrier wave converging method in a fdd system and a device thereof, and a method for obtaining upward/downward channels reciprocity and a device thereof |
| CN101729138B (en) * | 2008-10-15 | 2013-05-08 | 电信科学技术研究院 | Uplink and downlink transmission method, base station and user equipment |
| CN105376039A (en) * | 2014-08-21 | 2016-03-02 | 上海朗帛通信技术有限公司 | Transmission method and device for time division duplex system signal |
| CN111212452A (en) * | 2020-01-13 | 2020-05-29 | 海能达通信股份有限公司 | Handover method, communication system, terminal and storage device for voice communication |
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| CN100395968C (en) * | 2002-04-03 | 2008-06-18 | 华为技术有限公司 | Method for transmitting high-speed data service based on time-division duplex mode |
| CN1194563C (en) * | 2002-04-19 | 2005-03-23 | 华为技术有限公司 | Radio communication method based on time division diplexing |
| US9191840B2 (en) * | 2005-10-14 | 2015-11-17 | Qualcomm Incorporated | Methods and apparatus for determining, communicating and using information which can be used for interference control |
| CN101005305A (en) * | 2006-01-17 | 2007-07-25 | 上海原动力通信科技有限公司 | Transmitting method for time division duplex mobile communication system |
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| CN101729138B (en) * | 2008-10-15 | 2013-05-08 | 电信科学技术研究院 | Uplink and downlink transmission method, base station and user equipment |
| WO2010069259A1 (en) * | 2008-12-17 | 2010-06-24 | 华为技术有限公司 | A carrier wave converging method in a fdd system and a device thereof, and a method for obtaining upward/downward channels reciprocity and a device thereof |
| CN105376039A (en) * | 2014-08-21 | 2016-03-02 | 上海朗帛通信技术有限公司 | Transmission method and device for time division duplex system signal |
| CN108923906A (en) * | 2014-08-21 | 2018-11-30 | 上海朗帛通信技术有限公司 | The transmission method and device of TDD system signal |
| CN109039571A (en) * | 2014-08-21 | 2018-12-18 | 上海朗帛通信技术有限公司 | The transmission method and device of TDD system signal |
| CN105376039B (en) * | 2014-08-21 | 2018-12-18 | 上海朗帛通信技术有限公司 | The transmission method and device of TDD system signal |
| CN109039571B (en) * | 2014-08-21 | 2020-12-29 | 上海朗帛通信技术有限公司 | Transmission method and device for time division duplex system signal |
| CN108923906B (en) * | 2014-08-21 | 2021-01-26 | 上海朗帛通信技术有限公司 | Transmission method and device for time division duplex system signal |
| CN111212452A (en) * | 2020-01-13 | 2020-05-29 | 海能达通信股份有限公司 | Handover method, communication system, terminal and storage device for voice communication |
| CN111212452B (en) * | 2020-01-13 | 2022-05-17 | 海能达通信股份有限公司 | Handover method for voice communication, communication system, terminal and storage medium |
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