CN101162982B - TDD communication system and frame structure selecting method thereof - Google Patents
TDD communication system and frame structure selecting method thereof Download PDFInfo
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- CN101162982B CN101162982B CN200610140185A CN200610140185A CN101162982B CN 101162982 B CN101162982 B CN 101162982B CN 200610140185 A CN200610140185 A CN 200610140185A CN 200610140185 A CN200610140185 A CN 200610140185A CN 101162982 B CN101162982 B CN 101162982B
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Abstract
The invention discloses a time division duplex communication system, a selection method of a frame structure of the system and the selection method of the frame structure of a mobile terminal. A base station is used to conduct the single frequency zero-clearance coverage of multiple adjacent cells and/or the coverage of single independent cell and sends down the used frame structure through the cell broadcast channel; wherein, in the base station the coverage area of which is independent cell, a first frame structure is used on the frequency points used for the coverage of independent cell. In the base station used for the single frequency zero-clearance coverage of the neighbor cell, a second frame structure is used on the frequency points used for the neighbor cell. The mobile terminal determines the access mode of the mobile terminal according to the received information of the frame structure. The invention can obtain high service efficiency of frequency spectrum and flexibly support the uplink and the downlink businesses with little change of the existing protocol and strong practicality by selecting the corresponding frame structure according to different conditions in the applications of large-scale single frequency network, hot spot coverage, and indoor coverage.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to tdd communication systems, its frame structure selecting method and the frame structure selecting method of portable terminal wherein.
Background technology
Present tdd systems, as TD-SCDMA (TimeDivision-Synchronization Code Division Multiple Access, the TD SDMA access), PHS (Packet Handling Switching, the packet transaction exchange), all be to adopt single frame structure form, this single frame structure can't make the TD-SCDMA system and other mobile communication system based on TDD (time division duplex) are used at extensive single frequency network, focus covers and uses, indoor covering can obtain high frequency spectrum service efficiency in using.
In end of the year to 1,999 1998 year, according to the suggestion of discussing in the ITU (InternationalTelecommunications Union, International Telecommunications Union), the TD-SCDMA system has made repeatedly its frame structure and has revised, and forms present frame structure form, sees Fig. 1.
The physical channel of present TD-SCDMA adopts four-layer structure: system-frame (superframe), radio frames, subframe and time slot/sign indicating number.Time slot is used for distinguishing the different user signal on time domain, has the characteristic of TDMA (Time Division Multiple Access, time division multiple access).Each is wireless frame length 10ms (above and UTRA (access of UMTS terrestrial wireless) TDD is identical).The support to technology such as smart antenna and uplink synchronous has been considered in the design of TD-SCDMA system frame structure.A tdma frame (radio frames) 101 long 10ms are divided into two 5ms subframe 102a, 102b that structure is identical.Each subframe has two transfer points.Number by the flexible configuration uplink and downlink timeslot is applicable to the non-symmetrical service pattern.3 special time slot DwPTS (Down link Pilot Time Slot, descending pilot frequency time slot), GP (Guard Period, protection at interval) and UpPTS (Up link Pilot Time Slot, uplink pilot time slot) are arranged in the subframe.DwPTS is as descending pilot frequency and design synchronously, and UpPTS designs for uplink synchronous, GP be in Node B (base station) side by emission to receiving the protection interval of changing.CP indication code leaf length in the main time slot burst structure, burst is made up of two data blocks, an intermediate code and a GP.
Conventional time slot is used for transmitting user data or control information, and TS0 always comes the transmitting system broadcast message as descending time slot regularly, and TS 1 is always regularly as ascending time slot.Other conventional time slot can be configured to upstream or downstream as required neatly to realize the transmission of asymmetric traffic, as transmission of packet data.The 1st transfer point is fixed on TS0 end, and the 2nd transfer point then depends on the configuration (see figure 1) of sub-district uplink and downlink time slot.
Three special time slots, the arrangement of DwPTS, GP and UpPTS is a significantly difference of the frame structure of TD-SCDMA frame structure and other system, particularly process GP arrangement of time UpPTS time slot is characteristics of TD-SCDMA standard after descending DwPTS, and the outfield practice shows that there is major defect in the mode of this arrangement UpPTS.
Fig. 2 is that TD-SCDMA base station down synchronizing signal may be at the interference curve schematic diagram of UpPTS generation.The downstream signal that the base station sends at the DwPTS time slot can be because the influence of environment produces very big time delay expansion 103, this time delay spread signal is that direct path or the stack of reflection path on the home base stations antenna are passed through at the signal of DwPTS time slot emission in a plurality of adjacent base stations or non-adjacent base station, this is superimposed upon the interference magnitude 104 that can produce in the UpPTS time slot considerably beyond detection threshold, cause the base station can't sense terminals the normal upward signal of emission, make terminal can't finish normal access procedure.
Fig. 3 be the present inventor propose be applicable to the new TD-SCDMA frame structure that the extensive single frequency network of TD-SCDMA is used, and the frame structure of the wireless digital repeater that adapts with this new TD-SCDMA frame structure.In adjusted TD-SCDMA radio frames 201 to the UpPTS position, uplink synchronous time slot (perhaps up access slot) UpPTS time slot is put into the back of ascending time slot, multiple placement location can be arranged, be put into such as, UpPTS time slot that TS 1 back, UpPTS time slot are put into the TS2 back, the UpPTS time slot is put into the TS3 back.But placement location is the back at TS2 preferably.
The benefit that UpPTS is put into TS 1 back is: 1) can terminal the SYNC-UL signal of UpPTS time slot emission to the Interference Control of adjacent base station in very little scope, because the GP of SYNC-UL back has ensured terminal and only can produce interference to the outer base station of 32CHIP=7.5 kilometer, and the transmitting power of terminal has determined this to disturb and the signal of the terminal of interfered cell is little a lot, can not produce substantial effect, 2) there be not of the interference of SYNC-UL signal, because the time slot of back also is the terminal transmission time slot to other-end.
UpPTS be put into the TS3 back also can terminal the SYNC-UL signal of UpPTS time slot emission to the Interference Control of adjacent base station in very little scope, but, may be to (7.5 kilometers outer) terminal at a distance, produce a bit and disturb, in view of 7.5 kilometers the transmission range and the transmitting power of terminal, this interference is little more a lot of than the signal of base station that disturbed terminal receives.
Why say that it is a kind of method preferably that UpPTS is put into the TS2 back, reason is that this mode has two benefits: can obtain and UpPTS is put into same benefit after the TS1; Be convenient to DwPTS (R), GP (R) in the wireless repeater radio frames 204 and the arrangement of UpPTS (R) 205.
The characteristics that adopt frame structure shown in Figure 3 are that original DwPTS is converted to the interference of DwPTS to TS1 to the interference of UpPTS time slot, and TS1 is a Traffic Channel, can resist, suppress this interference by measures such as chnnel coding, beam shapings, to such an extent as to even if disturbing under the invalid fully situation of very strong above-mentioned interference protection measure, its result who causes just allows the 1 time slot free time of TS, cause the waste of this time interval resource, the consequence that this terminal that causes compared with present frame structure can't insert wants " flexibility " a little.
Prior art problems is that a kind of frame structure is applied to different environment, though under certain geographical environment and service environment, can reach good effect,, the performance that under another geographical environment and service environment, just can not produce.Such as, original T D-SCDMA frame structure 101 can guarantee when the covering of isolated sub-district the most flexible to the support of up-downgoing business, but the flexibility that this structure is brought when many cell networkings in fact can't realize, and, cause of the interference of the downstream signal of DwPTS time slot transmission to the UpPTS time slot in order to keep the flexibility that this in fact can't be realized; The frame structure 201 that Fig. 3 provides can be avoided the interference of the downstream signal of DwPTS time slot transmission to the UpPTS time slot when many cell networkings, and support with up-downgoing asymmetry of appropriateness, but being supported in of the up-downgoing asymmetry of this appropriateness just is not so good as original T D-SCDMA frame structure 101 when isolated sub-district covers.
Therefore, need a kind of technical scheme, can make tdd communication systems adopt different frame structures at different networking modes.
Summary of the invention
Main purpose of the present invention is to provide a kind of tdd communication systems, its frame structure selecting method and the frame structure selecting method of portable terminal wherein, is used to overcome the single frame structure that limitation and defective owing to prior art cause and is difficult to make system to obtain the problem of higher frequency spectrum service efficiency.
To achieve these goals, according to a first aspect of the invention, the invention provides a kind of. tdd communication systems comprises: the base station, be used to carry out the single-frequency zero-clearance covering of a plurality of neighbor cells and/or carry out the covering of single individual cell, and be used for issuing employed frame structure by CBCH, wherein, for the overlay area is the base station of individual cell, on the frequency that is used for the individual cell covering, use first frame structure, base station for the single-frequency zero-clearance that is used for neighbor cell covers is being used for using second frame structure on the frequency of neighbor cell; And portable terminal, be used for determining oneself access way according to the information of the frame structure that receives.
The overlay area is that the base station of individual cell can comprise that the base station that the single-frequency zero-clearance that is used for neighbor cell covers used the base station that covers frequency as individual cell.
Tdd communication systems can also comprise wireless digital repeater, is used to cooperate corresponding base station to realize covering to single individual cell, and the frame structure that uses on the frequency that continues therein according to corresponding base station is determined the working method of oneself.
Tdd communication systems can also comprise access point, be used to carry out the single-frequency zero-clearance covering of a plurality of neighbor cells and/or carry out the covering of single individual cell, wherein, for the overlay area is the access point of individual cell, or the access point that the single-frequency zero-clearance that is used for neighbor cell covers has used the access point that covers frequency as individual cell, on the frequency that is used for the individual cell covering, use first frame structure, access point for the single-frequency zero-clearance that is used for neighbor cell covers is being used for using second frame structure on the frequency of neighbor cell.
Tdd communication systems can be the TD-SCDMA system.
First frame structure can comprise: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot, protection at interval, uplink pilot time slot, the first time slot back and then successively; One or more ascending time slots, and then uplink pilot time slot back; One or more descending time slots are positioned at after one or more ascending time slots.
Second frame structure can comprise: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot and protection interval, the and then first time slot back; One or more ascending time slots, and then back, protection interval; Uplink pilot time slot is arranged in an ascending time slot back of one or more ascending time slots; One or more descending time slots are positioned at after one or more ascending time slots and the uplink pilot time slot.
To achieve these goals, according to a second aspect of the invention, the invention provides a kind of frame structure selecting method that is used for tdd communication systems.Frame structure selecting method may further comprise the steps:
Step S102 judges whether the overlay area of base station or access point is individual cell, if, then proceed to step S106, if not, then proceed to step S104;
Step S104 judges whether the base station or the access point of the single-frequency zero-clearance covering that is used for neighbor cell exists the frequency that can use specific frequency to cover as individual cell, if, then proceed to step S106, if not, then proceed to step S108;
Step S106 uses first frame structure on the frequency that can be used for the individual cell covering of base station or access point, proceed to step S110 then;
Step S108 uses second frame structure on the frequency that can be used for neighbor cell of base station or access point;
Step S110, base station or access point are to the frame structure information of its use of Cell Broadcast CB of its covering.
Cooperate corresponding base station to realize the wireless digital repeater that the sub-district covers if tdd communication systems has adopted, then the frame structure that uses on the frequency that wireless digital repeater continues therein according to corresponding base station is determined the working method of oneself.
Tdd communication systems can be the TD-SCDMA system.
First frame structure can comprise: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot, protection interval, uplink pilot time slot, the and then first time slot back; One or more ascending time slots, and then uplink pilot time slot back; One or more descending time slots are positioned at after one or more ascending time slots.
Second frame structure can comprise: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot and protection interval, the and then first time slot back; One or more ascending time slots, and then back, protection interval; Uplink pilot time slot is arranged in an ascending time slot back of one or more ascending time slots; One or more descending time slots are positioned at after one or more ascending time slots and the uplink pilot time slot.
To achieve these goals, according to a third aspect of the invention we, the invention provides the frame structure selecting method of a kind of employing according to portable terminal in the tdd communication systems of above-mentioned frame structure selecting method.The frame structure selecting method of portable terminal may further comprise the steps:
Step S202, portable terminal and base station, access point or wireless digital repeater are set up down-going synchronous;
Step S204, portable terminal receive the frame structure information of base station, access point or wireless digital repeater broadcasting;
The frequency that step S206, portable terminal use is as required selected the frame structure of oneself, and determines the access slot of oneself according to selected frame structure;
Step S208, portable terminal inserts in determined access slot.
Tdd communication systems can be the TD-SCDMA system.
Pass through technique scheme, the present invention uses at extensive single frequency network, focus covers and uses, indoor covering can obtain high frequency spectrum service efficiency in using, can support flexibly up-downgoing is professional, and very little to the existing protocol change, and realizability is strong.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 illustrates the frame structure of existing TD-SCDMA system;
Fig. 2 illustrates the interference that existing TD-SCDMA system frame structure causes;
Fig. 3 illustrates a kind of time division duplex frame structure and application example thereof;
Fig. 4 is the block diagram according to tdd communication systems of the present invention;
Fig. 5 is the flow chart that is used for the frame structure selecting method of tdd communication systems according to of the present invention;
Fig. 6 is the flow chart according to the frame structure selecting method of portable terminal in the tdd communication systems of the present invention;
Fig. 7 is the flow chart according to the method for the network selecting time division duplex frame structure of the embodiment of the invention; And
Fig. 8 is a flow chart of selecting the method for use time division duplex frame structure according to the terminal of the embodiment of the invention.
Embodiment
Describe the present invention below with reference to the accompanying drawings in detail.
With reference to Fig. 4, tdd communication systems 10 according to the present invention comprises: base station 20 and portable terminal 30.
The overlay area is that the base station 20 of individual cell can comprise that base station 20 that the single-frequency zero-clearance that is used for neighbor cell covers used base station 20. tdd communication systems 10 that cover frequency as individual cell can also comprise wireless digital repeater 40, the covering that is used to cooperate corresponding base station 20 to realize to single individual cell, and the frame structure that uses on the frequency that continues therein according to corresponding base station 20 is determined the working method of oneself.
First frame structure can comprise: first time slot as descending time slot, is used for sending system
The system broadcast message; Descending pilot frequency time slot, protection at interval, uplink pilot time slot, the first time slot back and then successively; One or more ascending time slots, and then uplink pilot time slot back; One or more descending time slots are positioned at after one or more ascending time slots.
Second frame structure can comprise: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot and protection interval, the and then first time slot back; One or more ascending time slots, and then back, protection interval; Uplink pilot time slot is arranged in an ascending time slot back of one or more ascending time slots; One or more descending time slots are positioned at after one or more ascending time slots and the uplink pilot time slot.
With reference to Fig. 5, the frame structure selecting method that is used for tdd communication systems according to the present invention may further comprise the steps:
Step S102 judges whether the overlay area of base station or access point is individual cell, as
Really be, then proceed to step S106, if not, then proceed to step S104;
Step S104, judgement is used for the base station or the access point of the single-frequency zero-clearance covering of neighbor cell
The frequency whether existence can use specific frequency to cover as individual cell, if, then proceed to step S106, if not, then proceed to step S108;
Step S106 uses first frame structure on the frequency that can be used for the individual cell covering of base station or access point, proceed to step S110 then;
Step S108 uses second frame structure on the frequency that can be used for neighbor cell of base station or access point;
Step S110, base station or access point are to the frame structure information of its use of Cell Broadcast CB of its covering.
Cooperate corresponding base station to realize the wireless digital repeater that the sub-district covers if tdd communication systems has adopted, then the frame structure that uses on the frequency that wireless digital repeater continues therein according to corresponding base station is determined the working method of oneself.
Tdd communication systems can be the TD-SCDMA system.
First frame structure can comprise: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot, protection interval, uplink pilot time slot, the and then first time slot back; One or more ascending time slots, and then uplink pilot time slot back; One or more descending time slots are positioned at after one or more ascending time slots.
Second frame structure can comprise: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot and protection interval, the and then first time slot back; One or more ascending time slots, and then back, protection interval; Uplink pilot time slot is arranged in an ascending time slot back of one or more ascending time slots; One or more descending time slots are positioned at after one or more ascending time slots and the uplink pilot time slot.
With reference to Fig. 6, employing according to the present invention may further comprise the steps according to the frame structure selecting method of portable terminal in the tdd communication systems of frame structure selecting method shown in Figure 5:
Step S202, portable terminal and base station, access point or wireless digital repeater are set up down-going synchronous;
Step S204, portable terminal receive the frame structure information of base station, access point or wireless digital repeater broadcasting;
The frequency that step S206, portable terminal use is as required selected the frame structure of oneself, and determines the access slot of oneself according to selected frame structure;
Step S208, portable terminal inserts in determined access slot.
Tdd communication systems can be the TD-SCDMA system.
The present invention has realized that by the integrated use to the different frame structure TD-SCDMA system uses at extensive single frequency network, focus covers and uses, indoor covering can obtain high frequency spectrum service efficiency in using, and can support flexibly up-downgoing is professional.
System of the present invention comprises: several meet base station, terminal, wireless digital repeater and or the access point of same standard.A kind of applicable cases of this system is: the base station that belongs to same standard also uses the other frequency to be used for the covering of single individual cell when the single-frequency zero-clearance that uses some frequency to be used for some neighbor cells covers; The another kind of applicable cases of this system is: the system that belongs to same standard had both comprised the base station of the single-frequency zero-clearance covering that is used for some neighbor cells, also comprised some base stations that single individual cell covers that are used for; The third applicable cases of this system is: the base station that belongs to same standard is when the single-frequency zero-clearance that uses some frequency to be used for some neighbor cells covers, also use the other frequency to be used for the covering of single individual cell, and use some wireless digital repeater to realize the covering of single individual cell.
In the said system, base station and terminal can be used more than a kind of frame structure.
Below in conjunction with the method for Fig. 7 description according to the network selecting time division duplex frame structure of the embodiment of the invention.
Can obtain high frequency spectrum service efficiency in order to cover in application, the indoor covering application at extensive single frequency network application, focus, can be to professional flexible support of up-downgoing, system of the present invention selection use different frame structure.Concrete steps are:
Step 302 judges whether the overlay area of base station or access point is independent (or isolated) sub-district, if just enter step 304; If not, just enter step 303.The approach that has two kinds of specific implementations to judge: 1) judge according to priori, planning when laying according to network, some base station and access point are isolated the existence, do not exist in other base stations or the access point of working on the same frequency range around it, perhaps wireless digital repeater, in this case, just be judged to isolated sub-district or individual cell; 2) use the receive path of base station or access point that the frequency spectrum in its working frequency range is periodically measured, be lower than default thresholding if disturb, just be judged to isolated access point, otherwise, be judged to non-isolated access point, further, can judge concrete frequency, be lower than default thresholding, just be judged to the isolated access point of specific frequency if disturb on the specific frequency, otherwise, be judged to the non-isolated access point of specific frequency.
Step 303 covers the base station of networking for those single-frequency zero-clearances that are used for some neighbor cells, judges whether to exist the frequency that can use some frequency to cover as independent (or isolated) sub-district, if, just enter step 304, if not, step 305 just entered.Concrete grammar is: use the receive path of base station that the frequency spectrum in its working frequency range is periodically measured, be lower than default thresholding if disturb, just be judged to isolated access point, otherwise, be judged to non-isolated access point, further, can judge concrete frequency, be lower than default thresholding, just be judged to the isolated access point of specific frequency if disturb on the specific frequency, otherwise, be judged to the non-isolated access point of specific frequency.
Next, the method for selecting to use the time division duplex frame structure according to the terminal of the embodiment of the invention is described.
The process that terminal is obtained the frame structure information of using the base station is as shown in Figure 8:
Selection of the present invention uses the characteristics of the tdd systems of different frame structure to be: system covers frequency to the single-frequency zero-clearance that is used for neighbor cell, selects a kind of frame structure; System is used for the frequency that single individual cell covers to other, selects another kind of frame structure.The frame structure that uses on the frequency that wireless digital repeater continues therein according to the base station is determined the working method of oneself.The frame structure information that use the base station is handed down to Serving cell by CBCH, and terminal is determined the access way of oneself according to the frame structure information of the system that receives.
Effect of the present invention: by the integrated use to the different frame structure: 1) frame structure 201 downstream signal that the DwPTS time slot sends when principle has been eliminated extensive single frequency network is to the interference of UpPTS time slot; 2) frame structure 201 has guaranteed up-downgoing ability flexibly in isolated covering is used; 3) frame structure 204 of the wireless digital repeater of determining with frame structure 201 has guaranteed the introducing of repeater and the compatibility of existing system; 4) on the basis of existing protocol, the adaptively selected involved change that network and terminal realize the different frame structure seldom, and these designs to change also be the adjustment of time relationship.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a tdd communication systems is characterized in that, comprising:
The base station, be used to carry out the single-frequency zero-clearance covering of a plurality of neighbor cells and/or carry out the covering of single individual cell, and be used for issuing employed frame structure by CBCH, wherein, for the overlay area is the base station of individual cell, use first frame structure on the frequency that is used for the individual cell covering, the base station for the single-frequency zero-clearance that is used for neighbor cell covers is being used for using second frame structure on the frequency of neighbor cell; And
Portable terminal is used for determining according to the information of the described frame structure that receives oneself access way;
Wherein, described first frame structure comprises: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot, protection at interval, uplink pilot time slot, the first time slot back and then successively; One or more ascending time slots, and then uplink pilot time slot back; One or more descending time slots are positioned at after one or more ascending time slots;
Described second frame structure comprises: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot and protection interval, the and then first time slot back; One or more ascending time slots, and then back, protection interval; Uplink pilot time slot is arranged in an ascending time slot back of one or more ascending time slots; One or more descending time slots are positioned at after one or more ascending time slots and the uplink pilot time slot.
2. tdd communication systems according to claim 1, it is characterized in that, also comprise wireless digital repeater, be used to cooperate corresponding base station to realize covering, and the frame structure that uses on the frequency that continues therein according to corresponding base station is determined the working method of oneself described single individual cell.
3. tdd communication systems according to claim 1 is characterized in that, described tdd communication systems is the TD-SCDMA system.
4. a frame structure selecting method that is used for tdd communication systems is characterized in that, may further comprise the steps:
Step S102 judges whether the overlay area of access point is individual cell, if, then proceed to step S106, if not, then proceed to step S104;
Step S104 judges whether the described access point of the single-frequency zero-clearance covering that is used for neighbor cell exists the frequency that can use specific frequency to cover as individual cell, if, then proceed to step S106, if not, then proceed to step S108;
Step S106 uses first frame structure on the frequency that can be used for the individual cell covering of described access point, proceed to step S110 then;
Step S108 uses second frame structure on the frequency that can be used for neighbor cell of described access point;
Step S110, described access point is to the frame structure information of its use of Cell Broadcast CB of its covering;
Wherein, described first frame structure comprises: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot, protection interval, uplink pilot time slot, the and then first time slot back; One or more ascending time slots, and then uplink pilot time slot back; One or more descending time slots are positioned at after one or more ascending time slots;
Described second frame structure comprises: first time slot as descending time slot, is used for the transmitting system broadcast message; Descending pilot frequency time slot and protection interval, the and then first time slot back; One or more ascending time slots, and then back, protection interval; Uplink pilot time slot is arranged in an ascending time slot back of one or more ascending time slots; One or more descending time slots are positioned at after one or more ascending time slots and the uplink pilot time slot.
5. frame structure selecting method according to claim 4, it is characterized in that, cooperate corresponding base station to realize the wireless digital repeater that single individual cell covers if described tdd communication systems has adopted, the frame structure that uses on the frequency that then described wireless digital repeater continues therein according to corresponding base station is determined the working method of oneself.
6. frame structure selecting method according to claim 4 is characterized in that, described tdd communication systems is the TD-SCDMA system.
7. the frame structure selecting method of portable terminal in the tdd communication systems of an employing frame structure selecting method according to claim 4 is characterized in that, may further comprise the steps:
Step S202, described portable terminal and access point are set up down-going synchronous;
Step S204, described portable terminal receives the frame structure information of described access point;
Step S206, the frequency that described portable terminal uses is as required selected the frame structure of oneself, and determines the access slot of oneself according to selected frame structure;
Step S208, described portable terminal inserts in determined access slot.
8. frame structure selecting method according to claim 7 is characterized in that, described tdd communication systems is the TD-SCDMA system.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1678068A (en) * | 2004-04-01 | 2005-10-05 | 清华大学 | Single-frequency network system of ground digital TV broadcast and its realizing method |
| CN1741423A (en) * | 2004-08-23 | 2006-03-01 | 大唐移动通信设备有限公司 | Method for eliminating interference of downgoing pilot channel |
| CN1792113A (en) * | 2003-05-21 | 2006-06-21 | 西门子公司 | Method for establishing a connection in a radio communications system |
| CN1832378A (en) * | 2005-03-11 | 2006-09-13 | 大唐移动通信设备有限公司 | Method for radio transmission using high-efficient high performance frame structure for wide-band TDD system |
-
2006
- 2006-10-12 CN CN200610140185A patent/CN101162982B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792113A (en) * | 2003-05-21 | 2006-06-21 | 西门子公司 | Method for establishing a connection in a radio communications system |
| CN1678068A (en) * | 2004-04-01 | 2005-10-05 | 清华大学 | Single-frequency network system of ground digital TV broadcast and its realizing method |
| CN1741423A (en) * | 2004-08-23 | 2006-03-01 | 大唐移动通信设备有限公司 | Method for eliminating interference of downgoing pilot channel |
| CN1832378A (en) * | 2005-03-11 | 2006-09-13 | 大唐移动通信设备有限公司 | Method for radio transmission using high-efficient high performance frame structure for wide-band TDD system |
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