CN1691555B - A method for reducing uplink synchronous channel interference in TD-SCDMA access system - Google Patents
A method for reducing uplink synchronous channel interference in TD-SCDMA access system Download PDFInfo
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Abstract
The invention provides a method for reducing the channel interference to the ascending channel of the time division synchronism code-division system, configuring 4 spread-spectrum factors for 16 orthogonal changeable spread-spectrum code words as the public control physical channel, changing the data part (D1, D2, D3, D4, D5, D6, D7 and D8)in the continuous 4 sub frames of the interlace frame in the main public control physical channel into 15 sub frames (sub frame i to sub frame i+14) and send every a sub frame.
Description
(1) technical field
The present invention relates to reduce in a kind of wireless communication system the method for disturbing, insert more specifically to a kind of Time Division-Synchronous Code Division Multiple Access and reduce the method that uplink synchronous channel (UpPCH) disturbs in (TD-SCDMA) system.Method of the present invention can reduce the interference of the base station signal of the TD-SCDMA system that comes from different radio operator suffered when base station (BS) receives uplink synchronous channel, thereby improve the detection performance of base station, improve the efficient of subscriber station (UE) uplink synchronous for uplink synchronous channel.
(2) background technology
It is one of 3-G (Generation Three mobile communication system) standard that Time Division-Synchronous Code Division Multiple Access inserts low spreading rate (TD-SCDMA LCR) system, be operated under UTRAN (the UMTS Terrestrial Radio Access Network) network architecture, it carried out standardization effort by 3GPP (3rd Generation Partner Project) standardization body.
TD-SCDMA LCR system adopts time division duplex (TDD) mode, promptly by different business time-slot (TS) the uplink and downlink link is separated.Provided the frame structure (, providing the download of document among the www.3gpp.org of 3GPP website) of TD-SCDMA LCR system among Fig. 1 referring to TD-SCDMA system standard document 3GPP TS25.221.The frame of a TD-SCDMA LCR (Frame) is made of two subframes (Subframe); the duration of each subframe is 5ms; comprise 1 descending pilot frequency time slot (DwPTS) in each subframe; 1 uplink pilot time slot (UpPTS); 7 business time-slots and protection be (GP) at interval; 7 business time-slots are designated as TS0 respectively; TS1; TS2; TS3; TS4; TS5 and TS6; wherein transmit descending synchronous signal channel (DwPCH) in the descending pilot frequency time slot; transmit uplink synchronous channel (UpPCH) in the uplink pilot time slot; transmit burst (Burst) in the business time-slot, comprise training sequence (Midamble) in 1 burst; before the training sequence; after data division (Data) and protection at interval.TS0 always is the downlink business time slot, transmit downlink burst, use for down link, represent with downward arrow in the drawings, TS1 always is the uplink service time slot, transmit uplink burst, keeping supplying line link uses, represent with arrow upwards in the drawings, remaining 5 business time-slot all can be used as uplink service time slot or downlink business time slot, switch by switching point (Switching point) between uplink service time slot and downlink business time slot, have two switching points in the subframe of each TD-SCDMA LCR, provide among Fig. 1 on a kind of, the configuration mode of downlink business time slot.
Compare with Frequency Division Duplexing (FDD) (FDD) mode, in TD-SCDMA LCR system, because the uplink and downlink link uses identical frequency range under time division duplex, base station and subscriber station all only need a cover radio circuit, thereby the cost of system can be greatly diminished, and because under time division duplex, keep supplying, business time-slot number that down link uses can flexible configuration, thereby realize the transmission of uplink and downlink link different rates, thereby can realize the symmetry or the asymmetric transmission of uplink and downlink link easily.
When time division duplex has above-mentioned advantage, the mode of time division duplex also produces some distinctive requirements for the TD-SCDMALCR system, for example can not interfere with each other in order to make between the uplink and downlink link in the sub-district, the bi-directional synchronization of uplink and downlink link is set up in requirement in the sub-district: after subscriber station start, subscriber station by detect descending synchronous signal channel in the descending pilot frequency time slot and determine the sub-district at its place and set up with its place cell base station between down link synchronous; Then, subscriber station is estimated transmitted power that uplink synchronous channel is required and transmitting time roughly by its descending synchronous signal channel that receives, in uplink pilot time slot, send uplink synchronous channel to the base station, the base station is detected uplink synchronous channel and is generated adjustment instruction to the subscriber station transmitting time in uplink pilot time slot, thus subscriber station according to the instruction of base station adjust set up and the base station between uplink synchronisation.Again for example,, require the synchronization among base stations work of each sub-district for can the phase mutual interference between the uplink and downlink link that makes the minizone, between each cell base station can pass through synchronously global positioning system (GPS) or similarly system realize.
For can the phase mutual interference between the uplink and downlink link between the system of the different radio operator that makes asynchronous work, appropriate authorities are the different frequency range of the system assignment of different radio operator, belong to the base station of each cellular carrier system and subscriber station by filtering out the wireless signal that comes from other cellular carrier systems with its filter that distributes frequency range to be complementary.Ideally, under the TD-SCDMALCR system, the signal of each cellular carrier system should be separated fully mutually by the filter in base station and the subscriber station, makes each other and does not disturb mutually.Yet in actual conditions, consider the restriction that realizes cost, the filtering characteristic of base station and subscriber station median filter can not reach the requirement of desirable filtering, thereby interference can not be separated and then produce to the signal of successive bands cellular carrier system ideally fully.Provided among Fig. 2 between the system of the different radio operator of asynchronous work, when the signal of successive bands can not be existed by desirable separating fully when disturbing, the TS0 that belongs to the base station 1 of the A of cellular carrier system produces situation about disturbing to the uplink pilot time slot of the base station 2 of the B of another cellular carrier system.Downlink business time slot signal among the TS0 that base station 1 sends can appear at the position of the reception uplink pilot time slot signal of base station 2, when serious interference, downlink business time slot signal among the TS0 that base station 1 sends is understood the normal reception of interference base station 2 to the uplink synchronous channel that comes from subscriber station in its uplink pilot time slot, thereby causes the procedure failure of setting up of subscriber station uplink synchronous.
Define in existing TD-SCDMA LCR system standard: it is 16 orthogonal variable frequency extension factor code word (OVSF) C that main Common Control Physical Channel (P-CCPCH) uses a pair of spreading factor (SF)
Q=16 (k=1)And C
Q=16 (k=2)(referring to TD-SCDMA system standard document 3GPP TS25.223, providing the download of document among the www.3gpp.org of 3GPP website) transmits in TS0.Thereby when between the system that above-mentioned different radio operator in asynchronous work occurs, the signal of successive bands can not be existed by desirable separating fully when disturbing, the normal reception of the base station of another cellular carrier system to the uplink synchronous channel that comes from subscriber station in its uplink pilot time slot can be disturbed to the main Common Control Physical Channel of subscriber station broadcasting in the base station of a cellular carrier system in TS0, thereby influences the foundation of subscriber station uplink synchronous.
In order to solve the above problems, a fairly simple method as shown in Figure 3, the length of a main Common Control Physical Channel interlacing frames (InterleavingFrame) is 20ms in existing TD-SCDMA LCR system standard, comprising 4 continuous subframes (subframe i, subframe i+1, subframe i+2 and subframe i+3); At the problems referred to above, 4 continuous subframes in main Common Control Physical Channel interlacing frames in the TD-SCDMA LCR system are changed into every a subframe transmit once, be 16 orthogonal variable frequency extension factor code word C simultaneously in order to remedy the loss of the main Common Control Physical Channel transfer rate of therefore bringing, to increase a pair of spreading factor
Q=16 (k=3)And C
Q=16 (k=4)Use for main Common Control Physical Channel, be about to the 1st subframe (subframe i) in the above-mentioned interlacing frames and the 3rd subframe (subframe i+2) still at C
Q=16 (k=1)And C
Q=16 (k=2)Transmit on the position of the 1st subframe (subframe i) and the 3rd subframe (subframe i+2) in the code channel, the 2nd subframe (subframe i+1) in the above-mentioned interlacing frames and the 4th subframe (subframe i+3) are changed into the C of increase
Q=16 (k=3)And C
Q=16 (k=4)Transmit on the position of the 1st subframe (subframe i) and the 3rd subframe (subframe i+2) in the code channel; The transmitted power of main Common Control Physical Channel remains unchanged before and after its transfer approach changes.Adopt after said method changes the transfer approach of main Common Control Physical Channel, subframe in the main Common Control Physical Channel interlacing frames will transmit every subframe, thereby the position of not transmitting of the subframe in main Common Control Physical Channel interlacing frames, between the system of the different radio operator of asynchronous work, the main Common Control Physical Channel that the base station of a cellular carrier sends receives the issuable interference of uplink synchronous channel to the base station of another cellular carrier and can be eliminated.
In above-mentioned method, owing to need to keep the transmitted power of main Common Control Physical Channel constant, thereby after having increased the orthogonal variable frequency extension factor code word that can use for main Common Control Physical Channel, 4 spreading factors are the low 3dB of transmitted power of the transmitted power of 16 the every code channel of orthogonal variable frequency extension factor code word every code channel when only to use 2 spreading factors be 16 orthogonal variable frequency extension factor code word than main Common Control Channel, and the sending method of the interlacing frames after changing reduces the time that interweaves of main Common Control Physical Channel interlacing frames, the loss that these all can bring main Common Control Physical Channel signal-to-noise performance causes the reduction of main Common Control Physical Channel receptivity.
(3) summary of the invention
The object of the present invention is to provide and reduce the method that uplink synchronous channel disturbs in a kind of time-division-synchronous CDMA access system, make between the time-division-synchronous CDMA access system of the different radio operator of asynchronous work, the base station of a cellular carrier sends main Common Control Physical Channel and the base station of another cellular carrier is received the issuable interference of uplink synchronous channel is eliminated, and the while can remedy the loss of above-mentioned main Common Control Physical Channel on transmitted power and signal-to-noise performance again.
Above-mentioned purpose of the present invention realizes by following technical scheme: reduce the method that uplink synchronous channel disturbs in a kind of time-division-synchronous CDMA access system, wherein 4 continuous in main Common Control Physical Channel interlacing frames subframes are transmitted every subframe, dispose 4 spreading factors altogether and be 16 orthogonal variable frequency extension factor code word and use, it is characterized in that: use 2 described orthogonal variable frequency extension factor code word C for main Common Control Physical Channel
Q=16 (k=1), C
Q=16 (k=2)Wherein Q is a spreading factor, k represents the sequence number of described orthogonal variable frequency extension factor code word, data division (D1) before the training sequence among the TS0 of subframe i in the above-mentioned interlacing frames is transmitted in the data division before the training sequence in the TS0 of this subframe i, to transmit in the data division before the training sequence among the TS0 of data division (D2) the subframe i+2 in above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i, to transmit in the data division after the training sequence among the TS0 of the subframe i+4 of data division (D3) behind above-mentioned interlacing frames before the training sequence among the TS0 of subframe i+1 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of the subframe i+6 of data division (D4) behind above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i+1; Use other 2 described orthogonal variable frequency extension factor code words, to transmit in the data division before the training sequence among the TS0 of the subframe i+8 of data division (D5) behind above-mentioned interlacing frames before the training sequence among the TS0 of the subframe i+2 in the above-mentioned interlacing frames, to transmit in the data division before the training sequence among the TS0 of the subframe i+10 of data division (D6) behind above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i+2, to transmit in the data division after the training sequence among the TS0 of data division (D7) the subframe i+12 behind above-mentioned interlacing frames before the training sequence among the TS0 of the subframe i+3 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of data division (D8) the subframe i+14 behind above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i+3.
According to an aspect of the present invention, having increased by 2 spreading factors is that the transmitted power of main Common Control Physical Channel remained unchanged after 16 orthogonal variable frequency extension factor code word used for main Common Control Physical Channel: 4 spreading factors are the low 3dB of transmitted power of the transmitted power of 16 the every code channel of orthogonal variable frequency extension factor code word every code channel when only to use 2 spreading factors be 16 orthogonal variable frequency extension factor code word than main Common Control Channel.
According to another aspect of the present invention, 4 of described configuration spreading factor Q are that 16 the orthogonal variable frequency extension factor code word that uses for main Common Control Physical Channel is C
Q=16 (k=1), C
Q=16 (k=2), C
Q=16 (k=3)And C
Q=16 (k=4), wherein Q is a spreading factor, k represents the sequence number of described orthogonal variable frequency extension factor code word.
Time-division-synchronous CDMA access system for undefined subframe structure, above-mentioned purpose of the present invention realizes by following technical scheme: reduce the method that uplink synchronous channel disturbs in a kind of time-division-synchronous CDMA access system, wherein 4 continuous frames in the main Common Control Physical Channel interlacing frames are transmitted every frame, disposing 4 spreading factors altogether and be 16 orthogonal variable frequency extension factor code word uses for main Common Control Physical Channel, it is characterized in that: use 2 described orthogonal variable frequency extension factor code words, data division (D1) before the training sequence among the TS0 of frame i in the above-mentioned interlacing frames is transmitted in the data division before the training sequence in the TS0 of this frame i, to transmit in the data division before the training sequence among the TS0 of data division (D2) the frame i+2 in above-mentioned interlacing frames after the training sequence among the TS0 of this frame i, to transmit in the data division after the training sequence among the TS0 of the frame i+4 of data division (D3) behind above-mentioned interlacing frames before the training sequence among the TS0 of frame i+1 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of the frame i+6 of data division (D4) behind above-mentioned interlacing frames after the training sequence among the TS0 of this frame i+1; Use other 2 described orthogonal variable frequency extension factor code words, to transmit in the data division before the training sequence among the TS0 of data division (D5) the frame i+8 behind above-mentioned interlacing frames before the training sequence among the TS0 of frame i+2 in the above-mentioned main Common Control Physical Channel interlacing frames, to transmit in the data division before the training sequence among the TS0 of the frame i+10 of data division (D6) behind above-mentioned interlacing frames after the training sequence among the TS0 of this frame i+2, to transmit in the data division after the training sequence among the TS0 of the frame i+12 of data division (D7) behind above-mentioned interlacing frames before the training sequence among the TS0 of frame i+3 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of the frame i+14 of data division (D8) behind above-mentioned interlacing frames after the training sequence among the TS0 of this frame i+3.
According to an aspect of the present invention, after having increased by 2 spreading factors and be 16 orthogonal variable frequency extension factor code word and using for main Common Control Physical Channel, the transmitted power of main Common Control Physical Channel remains unchanged: 4 spreading factors are the low 3dB of transmitted power of the transmitted power of 16 the every code channel of orthogonal variable frequency extension factor code word every code channel when only to use 2 spreading factors be 16 orthogonal variable frequency extension factor code word than main Common Control Channel.
According to another aspect of the present invention, 4 of described configuration spreading factors are that 16 the orthogonal variable frequency extension factor code word that uses for main Common Control Physical Channel is C
Q=16 (k=1), C
Q=16 (k=2), C
Q=16 (k=3)And C
Q=16 (k=4)
(4) description of drawings
Purpose of the present invention and feature will be elaborated in conjunction with the accompanying drawings by embodiment, and these embodiment are illustrative, not have restricted.
Fig. 1 is illustrated in the frame structure of the TD-SCDMALCR system that defines in the existing time-division-synchronous CDMA access system standard.
Fig. 2 is illustrated between the TD-SCDMA LCR system of different radio operator of asynchronous work, when the signal of successive bands can not be existed by desirable separating fully when disturbing, the TS0 that belongs to the base station 1 of the A of cellular carrier system produces situation about disturbing to the uplink pilot time slot of the base station 2 of the B of another cellular carrier system.
Fig. 3 is illustrated between the TD-SCDMA LC R system of different radio operator of asynchronous work, the method for a kind of existing elimination interference shown in Figure 2.
Fig. 4 represents the method for elimination of the present invention interference shown in Figure 2, is used for the embodiment of TD-SCDMA LCR system.
Fig. 5 represents the method for elimination of the present invention interference shown in Figure 2, is used for the embodiment of TD-SCDMA TSM system.
(5) specific embodiment
Fig. 4 represents one embodiment of the present of invention.
In TD-SCDMA LCR system, comprise 4 continuous subframes (subframe i, subframe i+1, subframe i+2 and subframe i+3) in the interlacing frames of a main Common Control Physical Channel.It is 16 orthogonal variable frequency extension factor code word C that Primary Common Control Physical Channel uses a pair of spreading factor according to communication standard
Q=16 (k=1)And C
Q=16 (k=2)In the TS0 of each subframe, transmit, comprise among each TS0 before the training sequence and afterwards 2 data parts, be designated as D1, D2, D3, D4, D5, D6, D7 and D8 respectively, as shown in Figure 4.According to the method among the present invention, 4 continuous subframes in main Common Control Physical Channel interlacing frames in the TD-SCDMA LCR system are changed into every a subframe transmit once, be 16 orthogonal variable frequency extension factor code word C simultaneously in order to remedy the loss of the main Common Control Physical Channel transfer rate of therefore bringing, to increase a pair of spreading factor
Q=16 (k=3)And C
Q=16 (k=4)Use for main Common Control Physical Channel: use described orthogonal variable frequency extension factor code word C
Q=16 (k=1)And C
Q=16 (k=2)Data division (D1) before the training sequence among the TS0 of subframe i in the above-mentioned main Common Control Physical Channel interlacing frames is transmitted in the data division before the training sequence in the TS0 of this subframe i, and the data division (D2) after the training sequence among the TS0 of this subframe i is transmitted in the data division before the training sequence in the TS0 of subframe i+2, data division (D3) before the training sequence among the TS0 of subframe i+1 in the above-mentioned interlacing frames is transmitted in the data division after the training sequence in the TS0 of subframe i+4, and the data division (D4) after the training sequence among the TS0 of this subframe i+1 is transmitted in the data division after the training sequence in the TS0 of subframe i+6; Use other 2 described orthogonal variable frequency extension factor code word C
Q=16 (k=3)And C
Q=16 (k=4)Data division (D5) before the training sequence among the TS0 of subframe i+2 in the above-mentioned interlacing frames is transmitted in the data division before the training sequence in the TS0 of subframe i+8, and the data division (D6) after the training sequence among the TS0 of this subframe i+2 is transmitted in the data division before the training sequence in the TS0 of subframe i+10, data division (D7) before the training sequence among the TS0 of subframe i+3 in the above-mentioned interlacing frames is transmitted in the data division after the training sequence in the TS0 of subframe i+12, and the data division (D8) after the training sequence among the TS0 of this subframe i+3 is transmitted in the data division after the training sequence in the TS0 of subframe i+14.Having increased by 2 spreading factors is that the transmitted power of main Common Control Physical Channel remained unchanged after 16 orthogonal variable frequency extension factor code word used for main Common Control Physical Channel: 4 spreading factors are the low 3dB of transmitted power of the transmitted power of 16 the every code channel of orthogonal variable frequency extension factor code word every code channel when only to use 2 spreading factors be 16 orthogonal variable frequency extension factor code word than main Common Control Channel.
Each data division in the next interlacing frames behind the described main Common Control Physical Channel interlacing frames is transmitted according to the method among the present invention equally, thereby still be the beginning of a new main Common Control Physical Channel interlacing frames every 4 continuous subframes.
Use the method among the present invention, 4 continuous subframes change into after subframe transmits in the main Common Control Physical Channel interlacing frames with, although the main transmitted power of Common Control Physical Channel on each code channel reduced 3dB, but the time span of its interlacing frames is increased, time span growth by original 4 subframes (subframe i is to subframe i+3) is the time span of 15 subframes (subframe i is to subframe i+14), thereby strengthen the performance interweave greatly, thereby remedy the loss of main Common Control Physical Channel on transmitted power, and obtain the gain on the felt properties.Simultaneously owing to the subframe in the main Common Control Physical Channel interlacing frames will transmit every subframe, thereby the position of not transmitting of the subframe in main Common Control Physical Channel interlacing frames, between the system of the different radio operator of asynchronous work, the base station of a cellular carrier sends main Common Control Physical Channel and the base station of another cellular carrier is received the issuable interference of uplink synchronous channel can be eliminated.
Fig. 5 represents an alternative embodiment of the invention.
In the time-division-synchronous CDMA access system standards system, also comprise Time Division-Synchronous Code Division Multiple Access access mobile communication (TD-SCDMA TSM) system standard, it provides a kind of Radio Access Network technology of supporting that second generation mobile communication system seamlessly transits to 3-G (Generation Three mobile communication system), be operated under GSM (the GlobalSystem for Mobile communications) network architecture, it carried out standardization effort by CCSA (ChineseCommunication Standard Association) standardization body.TD-SCDMA TSM is identical with TD-SCDMA LCR system, also adopts time division duplex.The frame structure of the frame structure of TD-SCDMA TSM system and TD-SCDMA LCR system is similar, difference is that just a subframe in the TD-SCDMA LCR system promptly is equivalent to a frame in the TD-SCDMA TSM system, the duration that is every frame is 5ms, and no longer TD-SCDMA TSM system is provided with subframe structure.The related content more detailed description sees also TD-SCDMA system standard document CCSA TSM 05.02 (download of document is provided among the website www.ccsa.org.cn of CCSA).
For solve in the TD-SCDMA TSM system with above-mentioned TD-SCDMA LCR system in identical problem, as shown in Figure 5, according to the method among the present invention, 4 continuous frames in main Common Control Physical Channel interlacing frames in the TD-SCDMA TSM system are changed into every a frame transmit once, be 16 orthogonal variable frequency extension factor code word C simultaneously in order to remedy the loss of the main Common Control Physical Channel transfer rate of therefore bringing, to increase a pair of spreading factor
Q=16 (k=3)And C
Q=16 (k=4)Use for main Common Control Physical Channel: use described orthogonal variable frequency extension factor code word C
Q=16 (k=1)And C
Q=16 (k=2)Data division (D1) before the training sequence among the TS0 of frame i in the above-mentioned main Common Control Physical Channel interlacing frames is transmitted in the data division before the training sequence in the TS0 of this frame i, and the data division (D2) after the training sequence among the TS0 of this frame i is transmitted in the data division before the training sequence in the TS0 of frame i+2, data division (D3) before the training sequence among the TS0 of frame i+1 in the above-mentioned interlacing frames is transmitted in the data division after the training sequence in the TS0 of frame i+4, and the data division (D4) after the training sequence among the TS0 of this frame i+1 is transmitted in the data division after the training sequence in the TS0 of frame i+6; Use other 2 described orthogonal variable frequency extension factor code word C
Q=16 (k=3)And C
Q=16 (k=4)Data division (D5) before the training sequence among the TS0 of frame i+2 in the above-mentioned interlacing frames is transmitted in the data division before the training sequence in the TS0 of frame i+8, and the data division (D6) after the training sequence among the TS0 of this frame i+2 is transmitted in the data division before the training sequence in the TS0 of frame i+10, data division (D7) before the training sequence among the TS0 of frame i+3 in the above-mentioned interlacing frames is transmitted in the data division after the training sequence in the TS0 of frame i+12, and the data division (D8) after the training sequence among the TS0 of this frame i+3 is transmitted in the data division after the training sequence in the TS0 of frame i+14.Having increased by 2 spreading factors is after 16 orthogonal variable frequency extension factor code word uses for main Common Control Physical Channel, under the situation that the transmitted power of main Common Control Physical Channel remains unchanged, 4 spreading factors are the low 3dB of transmitted power of the transmitted power of 16 the every code channel of orthogonal variable frequency extension factor code word every code channel when only to use 2 spreading factors be 16 orthogonal variable frequency extension factor code word than main Common Control Channel.
By two above-mentioned embodiment as can be seen, use the method among the present invention, main Common Control Physical Channel transmits in its interlacing frames no longer continuously, on the position that main Common Control Physical Channel does not transmit in its interlacing frames, between the time-division-synchronous CDMA access system of the different radio operator of asynchronous work, the base station of a cellular carrier sends main Common Control Physical Channel and the base station of another cellular carrier is received the issuable interference of uplink synchronous channel can be eliminated, time span owing to main Common Control Physical Channel interlacing frames is increased simultaneously, thereby can strengthen the performance that interweaves greatly, thereby remedy the loss of main Common Control Physical Channel on transmitted power, and obtain the gain on the felt properties.
Claims (6)
1.TD-SCDMA reduce the method that uplink synchronous channel disturbs in the system, wherein 4 continuous in main Common Control Physical Channel interlacing frames subframes are transmitted every subframe, dispose 4 spreading factors altogether and be 16 orthogonal variable frequency extension factor code word and use, it is characterized in that: use 2 described orthogonal variable frequency extension factor code word C for main Common Control Physical Channel
Q=16 (k=1), C
Q=16 (k=2)Wherein Q is a spreading factor, k represents the sequence number of described orthogonal variable frequency extension factor code word, data division (D1) before the training sequence among the TS0 of subframe i in the above-mentioned interlacing frames is transmitted in the data division before the training sequence in the TS0 of this subframe i, to transmit in the data division before the training sequence among the TS0 of data division (D2) the subframe i+2 in above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i, to transmit in the data division after the training sequence among the TS0 of the subframe i+4 of data division (D3) behind above-mentioned interlacing frames before the training sequence among the TS0 of subframe i+1 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of the subframe i+6 of data division (D4) behind above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i+1; Use other 2 described orthogonal variable frequency extension factor code words, to transmit in the data division before the training sequence among the TS0 of the subframe i+8 of data division (D5) behind above-mentioned interlacing frames before the training sequence among the TS0 of the subframe i+2 in the above-mentioned interlacing frames, to transmit in the data division before the training sequence among the TS0 of the subframe i+10 of data division (D6) behind above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i+2, to transmit in the data division after the training sequence among the TS0 of data division (D7) the subframe i+12 behind above-mentioned interlacing frames before the training sequence among the TS0 of the subframe i+3 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of data division (D8) the subframe i+14 behind above-mentioned interlacing frames after the training sequence among the TS0 of this subframe i+3.
2. reduce the method that uplink synchronous channel disturbs in the TD-SCDMA as claimed in claim 1 system, it is characterized in that having increased by 2 spreading factors be that the transmitted power of main Common Control Physical Channel remained unchanged after 16 orthogonal variable frequency extension factor code word used for main Common Control Physical Channel: 4 spreading factors are the low 3dB of transmitted power of the transmitted power of 16 the every code channel of orthogonal variable frequency extension factor code word every code channel when only to use 2 spreading factors be 16 orthogonal variable frequency extension factor code word than main Common Control Channel.
3. reduce the method that uplink synchronous channel disturbs in the TD-SCDMA as claimed in claim 1 or 2 system, 4 spreading factors that it is characterized in that described configuration are that 16 the orthogonal variable frequency extension factor code word that uses for main Common Control Physical Channel is C
Q=16 (k=1), C
Q=16 (k=2), C
Q=16 (k=3)And C
Q=16 (k=4)
4.TD-SCDMA reduce the method that uplink synchronous channel disturbs in the system, wherein 4 continuous frames in the main Common Control Physical Channel interlacing frames are transmitted every frame, disposing 4 spreading factors altogether and be 16 orthogonal variable frequency extension factor code word uses for main Common Control Physical Channel, it is characterized in that: use 2 described orthogonal variable frequency extension factor code words, data division (D1) before the training sequence among the TS0 of frame i in the above-mentioned interlacing frames is transmitted in the data division before the training sequence in the TS0 of this frame i, to transmit in the data division before the training sequence among the TS0 of data division (D2) the frame i+2 in above-mentioned interlacing frames after the training sequence among the TS0 of this frame i, to transmit in the data division after the training sequence among the TS0 of the frame i+4 of data division (D3) behind above-mentioned interlacing frames before the training sequence among the TS0 of frame i+1 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of the frame i+6 of data division (D4) behind above-mentioned interlacing frames after the training sequence among the TS0 of this frame i+1; Use other 2 described orthogonal variable frequency extension factor code words, to transmit in the data division before the training sequence among the TS0 of data division (D5) the frame i+8 behind above-mentioned interlacing frames before the training sequence among the TS0 of frame i+2 in the above-mentioned main Common Control Physical Channel interlacing frames, to transmit in the data division before the training sequence among the TS0 of the frame i+10 of data division (D6) behind above-mentioned interlacing frames after the training sequence among the TS0 of this frame i+2, to transmit in the data division after the training sequence among the TS0 of the frame i+12 of data division (D7) behind above-mentioned interlacing frames before the training sequence among the TS0 of frame i+3 in the above-mentioned interlacing frames, will transmit in the data division after the training sequence among the TS0 of the frame i+14 of data division (D8) behind above-mentioned interlacing frames after the training sequence among the TS0 of this frame i+3.
5. reduce the method that uplink synchronous channel disturbs in the TD-SCDMA as claimed in claim 4 system, it is characterized in that having increased by 2 spreading factors be that the transmitted power of main Common Control Physical Channel remained unchanged after 16 orthogonal variable frequency extension factor code word used for main Common Control Physical Channel: 4 spreading factors are the low 3dB of transmitted power of the transmitted power of 16 the every code channel of orthogonal variable frequency extension factor code word every code channel when only to use 2 spreading factors be 16 orthogonal variable frequency extension factor code word than main Common Control Channel.
6. as reducing the method that uplink synchronous channel disturbs in claim 4 or the 5 described TD-SCDMA systems, it is characterized in that 4 spreading factors that dispose are that 16 the orthogonal variable frequency extension factor code word that uses for main Common Control Physical Channel is C
Q=16 (k=1), C
Q=16 (k=2), C
Q=16 (k=3)And C
Q=16 (k=4)
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| CN101351035B (en) * | 2007-07-19 | 2011-11-30 | 中兴通讯股份有限公司 | Up synchronization method and apparatus for TD-SCDMA system |
| CN101083485B (en) * | 2007-07-23 | 2013-02-27 | 中兴通讯股份有限公司 | Intertexture mapping method for synchronous sequence of mobile communication downlink synchronizing system |
| CN102858016B (en) * | 2011-06-29 | 2017-03-15 | 中兴通讯股份有限公司 | Data processing method and device |
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| WO2003079601A1 (en) * | 2002-03-14 | 2003-09-25 | Qualcomm, Incorporated | Method and apparatus for reducing inter-channel interference in a wireless communication system employing a non-periodic interleaver |
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| WO2003079601A1 (en) * | 2002-03-14 | 2003-09-25 | Qualcomm, Incorporated | Method and apparatus for reducing inter-channel interference in a wireless communication system employing a non-periodic interleaver |
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