CN1960210B - Method and application for reducing coexistent interference of time division duplexing system in different frame structure - Google Patents

Method and application for reducing coexistent interference of time division duplexing system in different frame structure Download PDF

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Publication number
CN1960210B
CN1960210B CN2005101193977A CN200510119397A CN1960210B CN 1960210 B CN1960210 B CN 1960210B CN 2005101193977 A CN2005101193977 A CN 2005101193977A CN 200510119397 A CN200510119397 A CN 200510119397A CN 1960210 B CN1960210 B CN 1960210B
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time slot
scdma
frame
utra tdd
wireless frame
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CN2005101193977A
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CN1960210A (en
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唐海
王可
孙韶辉
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上海原动力通信科技有限公司
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Abstract

The invention discloses a method for reducing coexistence-interference of a time-division duplex system and application thereof. When co-existence of the time division-synchronization code division multi-address (TD-SCDMA) time-division duplex system with the common land wireless access UTRA TDD time-division duplex system is needed, time slot configuration is performed to the adjacent deployment UTRA TDD system with the adjacent frequency based on the slot configuration of the TD-SCDMA system, so that the consistent between upstream and downstream slots of two systems is kept. Therefore, the invention reduces the mutual interfere between systems and raises the system function.

Description

Reduce the method and the application of the tdd systems coexistence interference of different frame structure

Technical field

The present invention relates to the mobile communication technology field, be specifically related to method and application that a kind of tdd systems coexistence that reduces the different frame structure is disturbed.

Background technology

TDD (time division duplex) is a kind of duplex mode of communication system, is used for separating in mobile communication system receiving and transfer channel (or uplink downlink).Receiving and transmit in the mobile communication system of tdd mode is to be the different time-gap of carrier wave at same frequency channels.3-G (Generation Three mobile communication system) is except providing speech, and also requirement can provide data and multimedia service.Because usually the up-downgoing capacity is asymmetric for Internet (internet), file transfer and multimedia service, the therefore suitable TDD duplex mode that adopts.

The TDD system has following characteristics:

(1) do not need paired frequency, can use various frequency resources, be applicable to asymmetric up-downgoing message transmission rate, be specially adapted to the data service of IP type;

(2) uplink and downlink works is in same frequency, and the symmetry characteristic of radio wave propagation makes it new technologies such as smart antenna easy to use, reaches the purpose that improves performance, reduces cost;

(3) equipment cost is lower.

TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, also claiming the LCR TDD time division duplex of spreading rate (low)) system and UTRA TDD (universal terrestrial radio inserts time division duplex, also claims HCR TDD (time division duplex of high spreading rate)) system all be mainstream standard of the mobile communication system of present 3GPP (third generation partner program) appointment.These two kinds of different systems all adopt the TDD technology, can work in the TDD frequency range.

The something in common of TD-SCDMA and UTRA TDD has: (1) uses the TDD duplex mode; (2) use FDMA/TDMA/CDMA (frequency division multiple access/TDMA/CDMA) simultaneously; (3) use identical QPSK (Quadrature Phase Shift Keying) rf modulations demodulation techniques; (4) use the spread spectrum modulation technique of identical orthogonal variable spread spectrum coefficient; (5) use identical superframe and radio frames length; (6) use identical data multiplexing and tapping method; (7), use and the identical technology of 3GPP in chnnel coding with aspect interweaving; (8) CDMA TDD will use identical second, third layer signaling.

In these two kinds of TDD systems, all adopted CDMA technology.The principle of CDMA technology is based on spread spectrum, need to be about to certain signal bandwidth information data that has of transmission, modulate much larger than the high speed pseudo noise code of signal bandwidth with a bandwidth, the bandwidth of former data-signal is expanded, again through carrier modulation and send.Receiving terminal uses identical pseudo noise code, makes relevant treatment with the bandwidth signal that receives, and the narrow band signal that broadband signal is changed into the prime information data is despreading, to realize information communication.

The interference problem of the CDMA mobile communication system of tdd mode mainly comprises the interference between the uplink downlink, the interference between the different network operators and from the interference of output pulses.

Interference between the uplink downlink is divided into the interference between the interference between the uplink downlink and minizone uplink downlink in the sub-district.The former be because in a sub-district between the user be damaged synchronously or time of uplink downlink distributes uneven.For the latter, asymmetrical TDD time slot will influence the Radio Resource of adjacent cell and cause the uplink downlink of minizone to disturb, the base station that adjacent cell can be blocked in high-power in addition base station receives the terminal of this sub-district, and the high power-terminal that is in cell boarder also can be blocked the terminal that different time-gap distributes that has of adjacent cell.

When same geographical environment had several operators with same TDD frequency, because asymmetrical dynamic assignment between stationary problem between the base station and the uplink downlink can be disturbed between the different network operators, this was that tdd mode is peculiar.

When TD-SCDMA system and UTRA TDD system coexist geographically, if two systems adopt adjacent frequency on employed frequency spectrum, because the difference of its identical time slot up-downlink configuration can produce very big phase mutual interference, even might cisco unity malfunction.For example, if the two is operated in the situation of adjacent frequency coexistence, the position of the ascending time slot of TD-SCDMA system just in time is the descending time slot of UTRATDD system, the downstream signal of UTRA TDD can form very strong interference to the upward signal of TD-SCDMA like this, and the base station of TD-SCDMA can be received the upward signal of TD-SCDMA terminal and the interference that UTRA TDD base station down leakage signal arrives the TD-SCDMA frequency simultaneously.

Phase mutual interference when reducing these two kinds of coexistence of systems needs the complicated network planning, as the site engineering, perhaps adopts high performance filter in base station and terminal radio frequency, reduces out-of-band radiation.But no matter adopt which kind of method, all will greatly improve system cost and complexity.

Summary of the invention

The purpose of this invention is to provide the method that a kind of tdd systems coexistence that reduces the different frame structure is disturbed, phase mutual interference when serving as the coexistence of elimination different system to overcome in the prior art needs higher cost, and realize complicated shortcoming, the mutual interference that produces when eliminating the tdd systems coexistence of different frame structure simply, effectively.

Another object of the present invention provides a kind of time division duplex radio communication network plan method, so that the coexistence of the tdd systems of different frame structure, and can not produce stronger mutual interference, satisfy the different business demands of applications.

For this reason, the invention provides following technical scheme:

The method that a kind of tdd systems coexistence that reduces the different frame structure is disturbed, the tdd systems of described different frame structure comprises that Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system and universal terrestrial radio insert time division duplex (UTRA TDD) system, and described method comprises:

A, the time slot configuration of obtaining TD-SCDMA system wireless frame structure and frame structure timer clock;

B, obtain with the adjacent deployment of described TD-SCDMA system and use the time slot configuration of the UTRA TDD system wireless frame structure of side frequency;

C, determine relative time delay of UTRA TDD system wireless frame structure timer clock and TD-SCDMA system wireless frame structure timer clock, according to the corresponding relation of determining each time slot in UTRA TDD system wireless frame structure time slot and the TD-SCDMA subframe described relative time delay;

D, will give down link corresponding to the time slot allocation of the TS0 position in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure according to described corresponding relation, give up link corresponding to the time slot allocation of the TS1 position in the TD-SCDMA subframe, make in the UTRA TDD system wireless frame structure each time slot configuration for and keep consistent to greatest extent based on the uplink and downlink timeslot arrangement in the TD-SCDMA frame structure.

Each time slot configuration in the described UTRA of the making TDD system wireless frame structure for keep consistent to greatest extent based on the corresponding time slot in the TD-SCDMA frame structure and comprise:

Do not use being configured to the free time corresponding to the part of the special time slot in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure;

The configuration of other time slots be consistent by the maximal efficiency principle corresponding to the time slot configuration in the TD-SCDMA subframe, if the part of up-downgoing conflict is arranged, the part of corresponding conflict in the UTRA TDD system is configured to the free time does not use.

A kind of time division duplex radio communication network plan method, described method comprises:

A, determine the position of each base station and the system pattern of use thereof according to service needed;

B, when adjacent base station adopts the TD-SCDMA system of different frame structure and UTRA TDD system respectively and uses side frequency, determine the relative time delay of UTRA TDD system wireless frame structure timer clock and TD-SCDMA system wireless frame structure timer clock, according to the corresponding relation of determining each time slot in UTRA TDD system wireless frame structure time slot and the TD-SCDMA subframe described relative time delay;

C, each system is carried out time slot configuration based on the time slot configuration and the described corresponding relation of TD-SCDMA system, give down link with the time slot allocation in the UTRA TDD system wireless frame structure corresponding to the TS0 position in the TD-SCDMA subframe, give up link corresponding to the time slot allocation of the TS1 position in the TD-SCDMA subframe, make in the UTRA TDD system wireless frame structure each time slot configuration for and keep consistent to greatest extent based on the uplink and downlink timeslot arrangement in the TD-SCDMA frame structure.

Also comprised before the relative time delay of described definite UTRA TDD system wireless frame structure timer clock and TD-SCDMA system wireless frame structure timer clock:

According to service needed each time slot in the TD-SCDMA system wireless frame structure is configured.

Before the described corresponding relation of determining each time slot in UTRA TDD system wireless frame structure time slot and the TD-SCDMA subframe according to described relative time delay, also comprise step;

Adjust the frame structure timer clock of UTRA TDD system, making the relative time delay of the frame structure timer clock of itself and TD-SCDMA system is 0.

Each time slot configuration in the described UTRA of the making TDD system wireless frame structure for keep consistent to greatest extent based on the uplink and downlink timeslot arrangement in the TD-SCDMA frame structure and comprise:

Do not use being configured to idle time slot corresponding to the part of the special time slot in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure;

The configuration of other time slots be consistent by the maximal efficiency principle corresponding to the time slot configuration in the TD-SCDMA subframe, if the part of up-downgoing conflict is arranged, the part of corresponding conflict in the UTRA TDD system is configured to the free time does not use.

By above technical scheme provided by the invention as can be seen, the present invention is directed to the situation that has mutual interference mutually based on the system of TD-SCDMA frame structure or similar frame structure with based on the coexistence of systems of UTRA tdd frame structure or similar frame structure the time, based on the time slot configuration arrangement of TD-SCDMA frame structure time slot configuration based on the UTRATDD frame structure, for near the time slot the up-downgoing transfer point in based on the TD-SCDMA frame structure not, be configured to consistent based on time slot direction in the TD-SCDMA frame structure, and to the time slot among the UTRA TDD at transfer point place, be configured according to the maximum principle of efficient, make it consistent to greatest extent with the uplink and downlink timeslot arrangement maintenance in the TD-SCDMA frame, thereby reduce even avoided occurring ascending time slot and the overlapping situation of descending time slot, interference when farthest having reduced the two coexistence has improved system effectiveness effectively.

The method that tdd systems coexistence by elimination different frame structure provided by the invention is disturbed, when carrying out the network planning, can make the tdd systems coexistence of different frame structure, and can not produce stronger mutual interference, thereby can satisfy various different business demands of applications.

Description of drawings

Fig. 1 is a TD-SCDMA system wireless frame structure schematic diagram;

Fig. 2 is the subframe structure schematic diagram of TD-SCDMA system;

Fig. 3 is a TD-SCDMA time slot allocation pattern diagram;

Fig. 4 is the wireless frame structure schematic diagram of UTRA TDD system;

Fig. 5 is a UTRA TDD time slot allocation pattern diagram;

Fig. 6 is the realization flow figure that the present invention reduces the method that the tdd systems coexistence of different frame structure disturbs;

Fig. 7 is the schematic diagram of UTRA tdd frame structure matching TD-SCDMA frame structure;

Fig. 8 is the realization flow figure of time division duplex radio communication network plan method of the present invention;

Time slot allocation schematic diagram when Fig. 9 is the TDD coexistence of systems of different spreading rates in the network planning.

Embodiment

Core of the present invention is when UTRA TDD system and TD-SCDMA coexistence of systems, based on the time slot configuration arrangement of the system of the TD-SCDMA frame structure time slot configuration based on UTRA tdd frame structural system.When specific implementation, consider that (each radio frames comprises 2 subframes for the identical point (each wireless frame length is 10ms) of two system wireless frame structures and the uniqueness of TD-SCDMA system wireless frame structure, 3 special time slots are arranged) in each subframe, time slot configuration with the TD-SCDMA system is a benchmark, determines the time slot allocation of UTRATDD system.In the UTRA tdd frame structure in the corresponding TD-SCDMA frame structure time slot of TS0 position be set to descending time slot, the time slot of TS1 position is set to ascending time slot in the corresponding TD-SCDMA frame structure, for near the time slot the up-downgoing transfer point in based on the TD-SCDMA frame structure not, be configured to consistent based on time slot direction in the TD-SCDMA frame structure, the uplink and downlink timeslot arrangement in the time slot allocation and TD-SCDMA system keeps consistent to greatest extent in the UTRA TDD system thereby make.

In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.

The present technique field personnel know, in tdd systems, the transmission of signal comprise from the base station to the terminal transmission (being called down link) and from the transmission (being called up link) of terminal to base station.A radio frames comprises a plurality of time slots, and the duration of different time-gap can be identical, also can be different.Up link and down link use a different time-gap in the radio frames to transmit respectively.In the prior art, up link is used identical transmission technology usually with down link.

The frame structure of the physical layer channel of TD-SCDMA system is divided into three layers: radio frames (Radio Frame), subframe (Sub-Frame) and time slot (Time Slot, or be called burst Burst).

TD-SCDMA system wireless frame structure is as shown in Figure 1:

Each wireless frame length is 10ms, is divided into the subframe of two 5ms.

TD-SCDMA system subframe structure is as shown in Figure 2:

A subframe lengths is 5ms, adopts chip (chip) speed of 1.28Mcps.Each subframe is made of 7 conventional time slots (TS0-TS6, each slot length are 675 μ s) and 3 special time slots: descending pilot frequency time slot DwPTS (length is 75us), uplink pilot time slot UpPTS (length is 125us) and protection time slot GP (length is 75us).

In 7 conventional time slots, TS0 always distributes to down link DL, be the downlink broadcast time slot, and TS1 always distributes to up link UL.Separate by transfer point SP between ascending time slot and the descending time slot.In the TD-SCDMA system, the subframe of each 5ms has two transfer points (UL to DL and DL to UL).By disposing the number of uplink and downlink timeslot flexibly, TD-SCDMA is applicable to the symmetric and asymmetric pattern of up-downgoing.

Fig. 3 has provided the example of symmetrical distribution and asymmetric distribution uplink downlink respectively.

When the time slot symmetric pattern, the time slot of up link and downlink allocation same number, in the figure, TS1, TS2, TS3 distribute to up link, and TS4, TS5, TS6 distribute to down link.Make the up-downgoing data keep identical transmission rate like this;

When the time slot asymmetric mode, the time slot of up link and the different numbers of downlink allocation, in the figure, TS1, TS2 distribute to up link, and TS3, TS4, TS5, TS6 distribute to down link.Make the up-downgoing data keep different transmission rates like this, to adapt to the data service of uplink downlink needs different transmission rates, such as the data service of IP type.

UTRA TDD system wireless frame structure is as shown in Figure 4:

A radio frames length is 10ms, adopts the spreading rate of 3.84Mcps.Comprise 15 isometric time slots, wherein, Tc represents the time of a chip (chip).

For UTRA TDD, each time slot both can have been distributed to up, also can distribute to descending, to a kind of method of salary distribution of up-downgoing symmetry as shown in Figure 5:

Wherein, TS0 to TS7 distributes to down link, and TS8 to TS15 distributes to up link.

With reference to Fig. 6, Fig. 6 shows the realization flow of the method that tdd systems coexistence that the present invention reduces the different frame structure disturbs, and may further comprise the steps:

Step 601: the time slot configuration and the frame structure timer clock that obtain TD-SCDMA system wireless frame structure.

Because the operator of different system may be different, therefore when the network planning, do not consider the influence of other system, for the tdd systems worker that makes the different frame structure can not produce stronger mutual interference when the operation, just need make in the UTRA TDD system time slot allocation consistent to greatest extent with the uplink and downlink timeslot arrangement maintenance in the TD-SCDMA system.Like this, just need know the time slot allocation situation of other adjacent system radio frames of using side frequency.

Though the wireless frame length of UTRA TDD system and TD-SCDMA system is 10ms, by the description of front as can be known, these two kinds of systems but are different to the division of time slot.

For UTRA TDD system, a radio frames is divided into 15 isometric time slots, and each time slot both can have been distributed to up link and use, and also can distribute to down link and use; And for the TD-SCDMA system, a radio frames comprises 2 subframes, and each subframe is divided into 7 conventional time slots and 3 special time slots.In order to make TD-SCDMA system operate as normal, in these 7 conventional time slots, TS0 need distribute to down link and use, and TS1 need distribute to the up link use.

Step 602: the time slot configuration of obtaining the UTRA TDD system wireless frame structure of and use side frequency adjacent with the TD-SCDMA system.

Equally, UTRA TDD system also may be independent planning, the position of base station and the frequency of use may all configure, increase the difficulty of system design in order not make system do big change, only need are adjusted the time slot configuration of the UTRA TDD system wireless frame structure of and use side frequency adjacent with the TD-SCDMA system.

Step 603:, adjust the timer clock and the time slot configuration of UTRA TDD system wireless frame structure according to the time slot configuration and the frame structure timer clock of TD-SCDMA system wireless frame structure.

Below in conjunction with the adjustment mode of Fig. 7 detailed description to the time slot configuration of UTRA TDD system wireless frame structure.

With reference to Fig. 7, the schematic diagram of Fig. 7 for UTRA TDD time slot configuration is adjusted:

The time slot configuration of TD-SCDMA is the 2:4 uplink and downlink timeslot method of salary distribution in this embodiment, is 4 descending time slots behind promptly per 2 ascending time slots.UTRA TDD system frame structure timer clock and the alignment of TD-SCDMA system frame structure timer clock.

The present technique field personnel know, though UTRA TDD radio frames duration is identical with TD-SCDMA radio frames duration, but different system frame structure timer clock may be different, and is leading or lag behind the starting point of TD-SCDMA wireless frame structure such as, the starting point of UTRA TDD wireless frame structure.Therefore at first to know the relative time delay of UTRA tdd frame structure timer clock and TD-SCDMA frame structure timer clock, then according to the corresponding relation of determining each time slot in UTRA TDD system wireless frame structure time slot and the TD-SCDMA subframe this relative time delay.Adjust the time slot configuration of UTRA TDD system wireless frame structure according to this corresponding relation.

Because TD-SCDMA system requirements TS0 distributes to down link and uses, TS1 distributes to up link and uses, and between TS0 and TS1, also have three special time slots, therefore in order to satisfy these requirements of TD-SCDMA system, need give down link with the time slot allocation corresponding to the TS0 position in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure, give up link corresponding to the time slot allocation of the TS1 position in the TD-SCDMA subframe; To be configured to idle time slot corresponding to the special time slot in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure; The configuration of other time slots be consistent corresponding to the time slot configuration in the TD-SCDMA subframe.

As shown in FIG., TS0 position in the corresponding TD-SCDMA frame structure of first time slot in the UTRA TDD system wireless frame structure should dispose it and be descending time slot;

Second time slot part is corresponding to three special time slot positions in the TD-SCDMA frame structure, a part is corresponding to TS1 position in the TD-SCDMA frame structure, therefore be configured as ascending time slot, and, overlap to avoid the DwPTS in this time slot and the TD-SCDMA frame structure at position insertion idle component corresponding to three special time slots in the TD-SCDMA frame structure;

The 4th time slot, can be configured for this time slot as required corresponding to the transfer point in the TD-SCDMA frame structure, inserts idle component simultaneously.Consider the service efficiency of time slot, also can be according to the maximum principle configuration of efficient, as with based on ascending time slot lap in the TD-SCDMA frame structure greater than with the descending time slot lap, then be configured as ascending time slot, otherwise be configured as descending time slot.

Equally,, can dispose other time slots in the UTRA TDD system wireless frame structure, it is not overlapped with corresponding TD-SCDMA time slot according to aforesaid way.Thereby the mutual interference that the difference that the reduction even two systems of eliminating dispose because of uplink and downlink timeslot produces.

When the network planning, can utilize the present invention, take all factors into consideration two kinds of system's application demands separately, wireless network is optimized design.

With reference to Fig. 8, Fig. 8 is the realization flow figure of time division duplex radio communication network plan method of the present invention, may further comprise the steps:

Step 801: determine the position of each base station and the system pattern of use thereof according to service needed.

Though UTRA TDD system and TD-SCDMA system all adopt tdd mode, in actual applications, UTRA TDD is primarily aimed at the wireless access data service, and coverage is less, and TD-SCDMA is a complete mobile communication system, supports various application scenarioss.Therefore,, need two kinds of coexistence of systems sometimes, at this moment just need to consider how to avoid because the phase mutual interference that the difference of uplink and downlink timeslot configuration produces user's received signal according to business demand.

Step 802: when adjacent base station adopts the tdd systems of different frame structure and uses side frequency, each system is carried out time slot configuration, two system uplink time slots and descending time slot are consistent based on the time slot configuration of TD-SCDMA system.

Specifically can be in the following ways:

At first, according to service needed each time slot in the TD-SCDMA system wireless frame structure is configured.The relative time delay of comparing UTRA tdd frame structure timer clock and TD-SCDMA frame structure timer clock, as possible, be 0 the relative time delay that also the frame structure timer clock of UTRA TDD system can be adjusted to the frame structure timer clock of TD-SCDMA system, that is to say, make the original position alignment of two system frame structures.

The two system frame structure time slot allocation schematic diagrames that reference is shown in Figure 9:

When the time slot configuration based on the TD-SCDMA frame structure was the 3:3 up-downgoing, the time slot (i.e. the 1st time slot) that disposes TS0 position in its corresponding TD-SCDMA frame structure was a descending time slot.For near the time slot the up-downgoing transfer point in based on the TD-SCDMA frame structure not, be configured to based on time slot direction in the TD-SCDMA frame structure consistent (is up as the 3rd, 4 time slot configuration among the figure); For near the time slot the up-downgoing transfer point in based on the TD-SCDMA frame structure, be configured according to the maximum principle of efficient, as with based on up lap in the TD-SCDMA frame structure greater than with descending lap, then should be configured to up.Therefore it is up disposing the 2nd time slot.Because based on the 2nd time slot in the system of UTRA tdd frame structure and overlapping in time based on DwPTS in the TD-SCDMA frame structure and GP, therefore need replace this part with idle time slot (IDLE part among the figure), and the scope of idle time slot to cover GP and DwPTS.Because UpPTS is up, therefore can allow the 2nd time slot and the UpPTS of UTRA TDD frame structure to overlap.

In addition; when the up-downgoing conversion appears in the frame structure system based on TD-SCDMA; if can not be in time and frame structure complete matching, add idle time slot with regard to needs and protect, as the 2nd and the 4th idle time slot among the figure based on TD-SCDMA based on the frame structure of UTRA TDD.A certain appropriate location in the scope of idle time slot this time slot after the time slot section start of crossing over transfer point is extended to transfer point.

When the time slot configuration based on the system of TD-SCDMA frame structure changes, when becoming the 2:4 up-downgoing by 3:3, configuration will be made corresponding change based on the system time gap of UTRA tdd frame structure, is converted to descendingly as its 4th time slot by up, and idle time slot is also transferred in this time slot simultaneously.

Certainly, can also adjust the frame structure alignment thereof of two kinds of systems arbitrarily according to the principle of the invention according to actual needs.

In the above embodiments, be example only with existing UTRA TDD system and TD-SCDMA system, describe the implementation procedure of the inventive method in detail, but the present invention is not limited to existing UTRA TDD system and TD-SCDMA system, the present invention can be applicable to any system based on UTRA tdd frame structure and system based on the TD-SCDMA frame structure, as the system based on the OFDM modulation system.

As seen, utilize the present invention, in the time of can making TD-SCDMA system and UTRA TDD coexistence of systems, can not produce stronger mutual interference.And TD-SCDMA system and UTRA TDD are on all four in the design of network and high-level signaling.In other words, system configuration and the basic consideration of CDMA TDD (code division multiple access time division duplex) are identical, thereby may realize integratedly fully in the future, adopt a unified standard.Because TD-SCDMA uses and has realized the new technology of smart antenna as representative, makes it have more superiority.When TD-SCDMA system and UTRA TDD coexistence of systems,, more help improving the performance of integrated network based on the time slot configuration arrangement of the system of TD-SCDMA frame structure time slot configuration based on UTRA tdd frame structural system.

Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.

Claims (6)

1. method that the tdd systems coexistence that reduces the different frame structure is disturbed, the tdd systems of described different frame structure comprises that Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system and universal terrestrial radio insert time division duplex (UTRA TDD) system, it is characterized in that described method comprises:
A, the time slot configuration of obtaining TD-SCDMA system wireless frame structure and frame structure timer clock;
B, obtain with the adjacent deployment of described TD-SCDMA system and use the time slot configuration of the UTRA TDD system wireless frame structure of side frequency;
C, determine relative time delay of UTRATDD system wireless frame structure timer clock and TD-SCDMA system wireless frame structure timer clock, according to the corresponding relation of determining each time slot in UTRA TDD system wireless frame structure time slot and the TD-SCDMA subframe described relative time delay;
D, will give down link corresponding to the time slot allocation of the TS0 position in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure according to described corresponding relation, give up link corresponding to the time slot allocation of the TS1 position in the TD-SCDMA subframe, make in the UTRA TDD system wireless frame structure each time slot configuration for and keep consistent to greatest extent based on the uplink and downlink timeslot arrangement in the TD-SCDMA frame structure.
2. method according to claim 1 is characterized in that, each time slot configuration in the described UTRA of the making TDD system wireless frame structure for keep consistent to greatest extent based on the corresponding time slot in the TD-SCDMA frame structure and comprise:
Do not use being configured to the free time corresponding to the part of the special time slot in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure;
The configuration of other time slots be consistent by the maximal efficiency principle corresponding to the time slot configuration in the TD-SCDMA subframe, if the part of up-downgoing conflict is arranged, the part of corresponding conflict in the UTRA TDD system is configured to the free time does not use.
3. a time division duplex radio communication network plan method is characterized in that, described method comprises:
A, determine the position of each base station and the system pattern of use thereof according to service needed;
B, when adjacent base station adopts the TD-SCDMA system of different frame structure and UTRA TDD system respectively and uses side frequency, determine the relative time delay of UTRA TDD system wireless frame structure timer clock and TD-SCDMA system wireless frame structure timer clock, according to the corresponding relation of determining each time slot in UTRA TDD system wireless frame structure time slot and the TD-SCDMA subframe described relative time delay;
C, each system is carried out time slot configuration based on the time slot configuration and the described corresponding relation of TD-SCDMA system, give down link with the time slot allocation in the UTRA TDD system wireless frame structure corresponding to the TS0 position in the TD-SCDMA subframe, give up link corresponding to the time slot allocation of the TS1 position in the TD-SCDMA subframe, make in the UTRA TDD system wireless frame structure each time slot configuration for and keep consistent to greatest extent based on the uplink and downlink timeslot arrangement in the TD-SCDMA frame structure.
4. method according to claim 3 is characterized in that, also comprises before the relative time delay of described definite UTRA TDD system wireless frame structure timer clock and TD-SCDMA system wireless frame structure timer clock:
According to service needed each time slot in the TD-SCDMA system wireless frame structure is configured.
5. method according to claim 3 is characterized in that, also comprises step before the described corresponding relation of determining each time slot in UTRA TDD system wireless frame structure time slot and the TD-SCDMA subframe according to described relative time delay:
Adjust the frame structure timer clock of UTRA TDD system, making the relative time delay of the frame structure timer clock of itself and TD-SCDMA system is 0.
6. method according to claim 5 is characterized in that, each time slot configuration in the described UTRATDD of the making system wireless frame structure for keep consistent to greatest extent based on the uplink and downlink timeslot arrangement in the TD-SCDMA frame structure and comprise:
Do not use being configured to idle time slot corresponding to the part of the special time slot in the TD-SCDMA subframe in the UTRA TDD system wireless frame structure;
The configuration of other time slots be consistent by the maximal efficiency principle corresponding to the time slot configuration in the TD-SCDMA subframe, if the part of up-downgoing conflict is arranged, the part of corresponding conflict in the UTRA TDD system is configured to the free time does not use.
CN2005101193977A 2005-11-04 2005-11-04 Method and application for reducing coexistent interference of time division duplexing system in different frame structure CN1960210B (en)

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CN101425839B (en) 2007-10-31 2011-09-14 电信科学技术研究院 Method, system and apparatus for transmission offset determination
CN101159479B (en) * 2007-11-09 2013-06-05 中兴通讯股份有限公司 Method of confecting special time slot in TDD system
CN101262702B (en) * 2008-02-01 2011-01-12 清华大学 An amalgamation and coexistence method for two time division duplex systems sharing spectrum resources
CN102067649B (en) * 2008-07-18 2013-03-27 上海贝尔股份有限公司 Method and device for configuring time slots for a buffer region among multiple cell clusters
CN101646257B (en) * 2008-08-07 2011-12-14 电信科学技术研究院 Method and device for determining resource using mode of cell
CN101662827A (en) * 2008-08-25 2010-03-03 三星电子株式会社 Method for specifying protective work time slot to reduce inter-system interference
CN101741710B (en) * 2008-11-04 2011-12-07 电信科学技术研究院 Uplink-downlink configuration and receiving methods of TDD system carrier aggregation
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