CN101282168A - Transmission method and system for TDD mobile communication system to share time wireless frame - Google Patents
Transmission method and system for TDD mobile communication system to share time wireless frame Download PDFInfo
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- CN101282168A CN101282168A CNA2007100962336A CN200710096233A CN101282168A CN 101282168 A CN101282168 A CN 101282168A CN A2007100962336 A CNA2007100962336 A CN A2007100962336A CN 200710096233 A CN200710096233 A CN 200710096233A CN 101282168 A CN101282168 A CN 101282168A
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Abstract
The present invention provides a method for transmitting the wireless frame when the TDD mobile communication systems coexist and a system thereof. Two TDD systems have same frame length of the wireless frames and are equally provided with a switching point from uplink to downlink and a switching point from downlink to uplink, wherein the second TDD system such as Wimax system confirms the length and the transmission time of the uplink subframe and downlink subframe in the wireless frame of the second TDD system according to the requirement that the homogeneous switching points of two systems are aligned and according to the timing information of the wireless frame of the first TDD system such as TD-SCDMA system. The base station of the second TDD system transmits the downlink subframe according to the confirmed time, and indicates the transmission time of the uplink subframe in the transmitted uplink control information. The system completes the function with a frame time regulation and control module connected with two TDD systems. The method of the invention can facilitate that the TDD systems with different wireless frame structures coexist.
Description
Technical field
The present invention relates to moving communicating field, the launching technique and the system thereof of radio frames when particularly relating to time division duplex mobile communication system coexistence with different radio frame structure.
Background technology
The duplex mode of mobile communication system comprises FDD (Frequency Division Duplexing, Frequency Division Duplexing (FDD)) and TDD (Time Division Duplexing, time division duplex) dual mode, different frequency ranges is adopted in the FDD up-downgoing, therefore needs to use in pairs frequency spectrum.Relative FDD system, the TDD system has following advantage:
1, do not need paired frequency spectrum, make things convenient for frequency spectrum planning;
2, can flexible allocation up-downgoing resource, be fit to non-symmetrical service;
3, the up-downgoing of TDD system takies identical frequency band, can utilize the reciprocity of channel, thus convenient some enhancement algorithms such as the smart antenna etc. of using;
4, TDD system uplink downlink has bigger wireless bandwidth than FDD system usually, so can obtain better frequency diversity effect;
5, the TDD system has only a wireless frequency, than TDD system lower hardware cost is arranged at radio-frequency head.
Commercial at present TDD system comprises Chinese 3G (Third Generation) Moblie standard TD-SCDMA (TimeDivision-Synchronized Code Division Multiple Access, TD SDMA inserts), WiMAX (Worldwide Interoperability for Microwave Access, World Interoperability for Microwave Access, WiMax claims IEEE802.16 standard or broadband wireless access standard again) etc.
The wireless frame structure of TDD system comprises sub-frame of uplink and descending sub frame, and switching need leave the guardtime time slot mutually between sub-frame of uplink and descending sub frame.The time point that uplink and downlink switch be called the up-downgoing switching point (Uplink Downlink Switching Point, UDSP), the time point that upper and lower row switches be called down up switching point (Downlink Uplink Switching Point, DUSP).When different TDD systems disposes simultaneously, it is overlapped coverage and frequently same or frequently adjacent, will be referred to the time unifying problem of these two kinds of switching points, if two kinds of switching points of a plurality of TDD system can not align, will there be serious co-channel interference between the system, and influences the operate as normal between the system.
There are two kinds of common frame structures in the TDD system.
First kind of frame structure, see Fig. 1, there are two descending sub frames and a sub-frame of uplink in radio frames the inside of this structure, comprise two switching points, wherein first switching point position is fixing usually, between first descending sub frame and sub-frame of uplink, second switching point is between sub-frame of uplink and second descending sub frame, but its position can be according to up-downgoing business proportion flexible allocation;
Second kind of frame structure, see Fig. 2, there are a descending sub frame and a sub-frame of uplink in radio frames the inside of this structure, comprises two switching points, wherein first switching point is between the sub-frame of uplink and descending sub frame of same radio frames, and its position can be according to up-downgoing business proportion flexible allocation; Second switching point is between the sub-frame of uplink of the sub-frame of uplink of a radio frames and next radio frames.
When considering the frame structure alignment of these two kinds of TDD systems, usual way is to begin direct alignment according to first downlink frame, as shown in Figure 3.But so this method is the radio frames of these two systems can't be alignd in time, this will make these two kinds of TDD systems coexist with the sub-frame of uplink end because one of these two kinds of frame structure finish one with descending sub frame, produce serious the interference each other.
Summary of the invention
The launching technique of radio frames can make the TDD coexistence of systems with different radio frame structure when technical problem to be solved by this invention provided the coexistence of a kind of time division duplex mobile communication system.
In order to solve the problems of the technologies described above, the invention provides a kind of launching technique of Wimax system wireless frame, be applied to the situation of Wimax system and TD-SCDMA coexistence of systems, may further comprise the steps:
(a), determine the length and the x time thereof of descending sub frame and sub-frame of uplink in the Wimax system wireless frame by the requirement of two similar switching points alignment of system according to the timing information of TD-SCDMA system wireless frame;
(b) base station of Wimax system is according to the moment transmitting downstream subframe of determining, and in the ascending control information that sends the x time of indication sub-frame of uplink.
Further, the launching technique of described radio frames also can have following characteristics:
The timing information of described TD-SCDMA system wireless frame comprise determine in the frame two initial moment of switching point and the finish time required information.
Further, the launching technique of described radio frames also can have following characteristics:
In the step (a), the length of Wimax system wireless frame descending sub frame equals the time between zero hour of TD-SCDMA system wireless frame second switching point finish time and next first switching point of radio frames; The length of Wimax system wireless frame sub-frame of uplink equals the time between zero hour of first switching point finish time of TD-SCDMA system wireless frame and second switching point, and the length of the radio frames of the TD-SCDMA system of indication is 5ms herein.
Further, the launching technique of described radio frames also can have following characteristics:
In the step (a), the x time of Wimax system wireless frame descending sub frame equals the finish time of second switching point of TD-SCDMA system wireless frame, and the x time of Wimax system wireless frame sub-frame of uplink equals the finish time of first switching point of TD-SCDMA system wireless frame.
Further, the launching technique of described radio frames also can have following characteristics:
Step (b) also comprises step (c) afterwards: when the position of TD-SCDMA system wireless frame uplink and downlink time slot switching point changes, obtain the current timing information of TD-SCDMA system wireless frame again, return step (a).
Further, the launching technique of described radio frames also can have following characteristics:
In the step (c), before the position of TD-SCDMA system wireless frame uplink and downlink time slot switching point changes constantly, prior notice Wimax system, the time that shifts to an earlier date should be more than or equal to the switching time of setting.
Further, the launching technique of described radio frames also can have following characteristics: the clock of Wimax system and TD-SCDMA system base-station keeps synchronously.
In order to solve the problems of the technologies described above, the launching technique of radio frames when the present invention also provides two kinds of TDD coexistence of systems, the frame length of these two TDD system wireless frames is identical, all has a switching point that is up to a descending switching point and a downstream-to-upstream, it is characterized in that: wherein second TDD system carries out the emission of radio frames according to the timing information of first TDD system wireless frame, may further comprise the steps:
(a), determine the length and the x time thereof of descending sub frame and sub-frame of uplink in second TDD system wireless frame by the requirement of two similar switching points alignment of system according to the timing information of first TDD system wireless frame;
(b) base station of second TDD system is according to the moment transmitting downstream subframe of determining, and in the ascending control information that sends the x time of indication sub-frame of uplink.
Further, the launching technique of described radio frames also can have following characteristics:
The radio frames of described first TDD system comprises first descending sub frame, first switching point, sub-frame of uplink, second switching point and second descending sub frame, the radio frames of described second TDD system comprises descending sub frame, first switching point, sub-frame of uplink and second switching point, and the clock of the base station of two systems keeps synchronously;
The timing information of first TDD system wireless frame of step (a) comprises the information of determining that two switching point starting and endings are constantly required; The length of determined second TDD system wireless frame descending sub frame equals the time between zero hour of first TDD system wireless frame second switching point finish time and next first switching point of radio frames; The length of determined second TDD system wireless frame sub-frame of uplink equals the time between zero hour of first switching point finish time of first TDD system wireless frame and second switching point; The x time of determined second TDD system wireless frame descending sub frame equals the finish time of second switching point of first TDD system wireless frame; The x time of determined second TDD system wireless frame sub-frame of uplink equals the finish time of first first switching point of TDD system wireless frame.
Further, the launching technique of described radio frames also can have following characteristics:
Step (b) also comprises step (c) afterwards: when the position of first TDD system wireless frame uplink and downlink time slot switching point changes, second TDD system of prior notice, second TDD system obtains the current timing information of TD-SCDMA system wireless frame again, return step (a), the time that shifts to an earlier date should be more than or equal to the switching time of setting.
Technical problem to be solved by this invention provides a kind of system that comprises the TDD system of two coexistences, can make the TDD coexistence of systems with different radio frame structure.
In order to solve the problems of the technologies described above, the present invention also provides a kind of system that comprises the TDD system of two coexistences, comprise first TDD system and second TDD system, the frame length of two TDD system wireless frames is identical, and all has a switching point that is up to a descending switching point and a downstream-to-upstream, it is characterized in that: also comprise the frame time adjustment control module that links to each other with described two TDD systems, this module comprises:
Arithmetic element, be used for timing information according to the radio frames of first TDD system, comprise determine in the frame two initial moment of switching point and the finish time required information, determine the length and the x time thereof of second TDD system wireless frame descending sub frame and sub-frame of uplink;
Communication unit, the timing information that is used to obtain first TDD system wireless frame is exported to described arithmetic element, and second TDD system wireless frame descending sub frame that described arithmetic element is determined and the length of sub-frame of uplink and the base station that x time is delivered to second TDD system thereof.
Further, said system also can have following characteristics:
The radio frames of described first TDD system comprises first descending sub frame, first switching point, sub-frame of uplink, second switching point and second descending sub frame, the radio frames of described second TDD system comprises descending sub frame, first switching point, sub-frame of uplink and second switching point, and the clock of the base station of two systems keeps synchronously;
The timing information of first TDD system wireless frame that described arithmetic element is obtained comprise determine two initial moment of switching point and the finish time required information, the length of determined second TDD system wireless frame descending sub frame equals the time between zero hour of first TDD system wireless frame second switching point finish time and next first switching point of radio frames; The length of determined second TDD system wireless frame sub-frame of uplink equals the time between zero hour of first switching point finish time of first TDD system wireless frame and second switching point; The x time of determined second TDD system wireless frame descending sub frame equals the finish time of second switching point of first TDD system wireless frame; The x time of determined second TDD system wireless frame sub-frame of uplink equals the finish time of first first switching point of TDD system wireless frame.
Further, said system also can have following characteristics:
Described first TDD system also comprises a timing information update notification module, is used for when the timing information of its radio frames changes, with the communication unit in the radio frames timing information notification frame time adjustment control module after upgrading.
Further, said system also can have following characteristics:
Described first TDD system is the TD-SCDMA system, and described second TDD system is the Wimax system.
In order to solve the problems of the technologies described above, the present invention also provides a kind of launching technique of Wimax system wireless frame, be applied to the situation of Wimax system and TD-SCDMA coexistence of systems, the delivery time of Wimax system is postponed, its descending sub frame is alignd with the starting position of second descending sub frame of TD-SCDMA system wireless frame, sub-frame of uplink aligns with the starting position of the sub-frame of uplink of TD-SCDMA system wireless frame, and keeps the length unanimity of similar transfer point.
Adopt the method for the invention, allow the time division duplex mobile communication system coexistence of different radio frame structure, by the method for the invention, the tdd systems of two kinds of different frame structures can align ascending-descending subframes, thereby can be compatible on regularly and do not produce interference at uplink/downlink frames.
Description of drawings
Fig. 1 is the wireless frame structure figure of first kind of TDD system;
Fig. 2 is the wireless frame structure figure of second kind of TDD system;
Fig. 3 is two kinds of radio frames alignment thereof schematic diagrames that the TDD system is common;
Fig. 4 is the radio frames alignment thereof schematic diagram of present embodiment;
Fig. 5 is the wireless frame structure schematic diagram of TD-SCDMA system;
Fig. 6 is the wireless frame structure schematic diagram of WiMAX system;
Fig. 7 is present embodiment WiMAX system and TD-SCDMA system wireless frame alignment schematic diagram.
The structural representation of the system that Fig. 8 forms for the TD-SCDMA system and the Wimax system of present embodiment coexistence.
The flow chart of emission of Fig. 9 present embodiment radio frames and method of adjustment.
Embodiment
Below in conjunction with accompanying drawing and specific implementation method the present invention is described in further detail.
The present invention is applied to the situation of two kinds of TDD coexistence of systems, as previously mentioned, the frame structure of first kind of system as shown in Figure 1, the frame structure of second kind of system as shown in Figure 2, the frame length of two frame structures is identical, in order to make two kinds of system compatibles on frame structure, when disposing second kind of system, need be provided with its radio frames timing and ascending-descending subframes length, as shown in Figure 4:
1, the descending sub frame with second kind of radio frames aligns with the original position of second descending sub frame of first kind of radio frames, i.e. emission simultaneously, delay a period of time radio frames time started of second kind of system can be realized, perhaps radio frames time started of first kind of system being shifted to an earlier date a period of time realizes, in general is that the radio frames of system that the back is built is regularly adjusted.
2, the descending sub frame length of second kind of system wireless frame of configuration equals first kind of system wireless frame, the first and second descending sub frame length sums, and the sub-frame of uplink length of second kind of system wireless frame equals the sub-frame of uplink length of first kind of radio frames.
The clock that also needs to guarantee the base station of two systems in addition keeps can adopting the clock synchronization as GSP synchronously.Like this, the switching point of two kinds of TDD system wireless frames just will launching has alignd, and also two kinds of radio frames have all been alignd on the uplink and downlink subframe simultaneously, so these two kinds of TDD systems is compatible fully in the radio frames timing.
Because first switching point of second switching point of first kind of system wireless frame and second kind of system wireless frame can be adjusted, therefore for fear of interference, must guarantee that both adjustment carry out synchronously, with the similar switching point that guarantees two kinds of TDD system wireless frames (switching point can be divided into be up to descending switching point and downstream-to-upstream switching point two classes) alignment all the time.
Be that example describes with TD-SCDMA system and WiMAX system below.Two networks can adopt adjacent frequency, mainly are the coexistences of considering access network, can be physically at local two complete equipments of placing.
The TD-SCDMA system is a kind of mobile communication system of typical TDD mode, and its wireless frame structure as shown in Figure 5.The radio frames of 10ms is divided into the subframe (this subframe is equivalent to the said radio frames of preamble in the TD-SCDMA system) of two 5ms; each subframe is divided into time slot (TS) and three special time periods of 7 0.675ms length; the time slot of 7 0.675ms length is used for service data transmission and signaling; three special time periods are respectively applied for descending pilot frequency time slot (DwPTS), main protection (GP) and uplink pilot time slot (UpPTS) at interval; wherein GP is as the DUSP switching point, i.e. first switching point.Descending pilot frequency time slot is the part of said first descending sub frame of this paper, and uplink pilot time slot is the part of the said sub-frame of uplink of this paper.First time slot is the descending time slot TS0 that fixes; 6 time slot TS1～TS6 of back are divided into continuous ascending time slot and continuous descending time slot; second switching point UDSP can be arranged on the separation of any two time slots of these 6 time slots, must distribute one be up to descending protection interval from adjacent time-slots on switching point.
The WiMAX system also is a kind of mobile communication system of typical TDD mode, and its wireless frame structure as shown in Figure 6.The typical radio frame length of WiMAX system is 5ms, is divided into descending sub frame, downstream-to-upstream protection interval (i.e. first switching point), sub-frame of uplink and is up to descending protection (i.e. second switching point) at interval.Its descending sub frame length and sub-frame of uplink length can be according to the ratio flexible allocation of up-downgoing business.
The length at above interval is the length of corresponding switching point.
The transfer point DUSP that supposes the TD-SCDMA wireless sub-frame is between the 3rd time slot and the 4th time slot; for WiMAX system compatible TD-SCDMA system with the wireless frame length of 5ms; when disposing the WiMAX system; as shown in Figure 7; WiMAX radio frames descending sub frame starting point is postponed a period of time; align with the descending time slot that begins behind second transfer point of TD-SCDMA subframe; WiMAX radio frames descending sub frame length equals all descending time slots of TD-SCDMA subframe and descending pilot frequency time slot time span sum in addition; and allow WiMAX radio frames downstream-to-upstream protection equal the main protection of TD-SCDMA wireless sub-frame at interval at interval, relief WiMAX radio frames sub-frame of uplink and be up to descending protection gap length sum and equal all ascending time slots of TD-SCDMA subframe; uplink pilot time slot time and the length sum that is up to descending protection interval.Like this wireless frame structure of WiMAX system just and the wireless frame structure complete matching of TD-SCDMA system, these two systems are compatible and can not produce interference with regard to energy on frame structure.
Be without loss of generality, when the downstream-to-upstream switching point DUSP of TD-SCDMA system changes, such as being positioned at the middle optional position of the 1st～6 time slot.According to above-described method, only need relative delay by configuration modification Wimax system, promptly can realize the complete matching of two system's switching points easily.
The structure of the system that should be made up of the TD-SCDMA system and the Wimax system of coexistence as shown in Figure 8.It is main control device that this system adjusts control module by frame time, links to each other the emission of the TDD system base-station radio frames that the control needs are synchronous with TD-SCDMA system such as base station and Wimax system such as base station.The realization that frame time is adjusted control module can have the operation maintenance equipment of this authority to finish by radio network controller (RNC) or other are any, also can design a control adjusting module automatically, can a part on entity, also can be divided into two parts, and any qualification is not done in its position yet.
Based on said system, the flow process of emission of present embodiment base station radio frame and method of adjustment is a back construction because suppose the Wimax system as shown in Figure 9, and described herein is the processing method of Wimax system base-station when the emission radio frames:
If the starting and ending that the so-called initial moment of definite switching point and the finish time, required information might not switching point itself constantly, comprise any information At All Other Times that can uniquely derive this moment here.For example,, can derive the initial moment of second switching point, add the length of second switching point, can obtain the finish time of second switching point according to the finish time of the firstth switching point and the number of time slots of TD-SCDMA radio frames second descending sub frame.In like manner, according to the length of x time He first switching point of first descending sub frame of TD-SCDMA radio frames, the initial moment and the finish time that also can direct derivation go out first switching point.Or the like.
The length of Wimax system wireless frame descending sub frame equals the time between zero hour of TD-SCDMA system wireless frame second switching point finish time and next first switching point of radio frames.The length of Wimax system wireless frame sub-frame of uplink equals the time between zero hour of first switching point finish time of TD-SCDMA system wireless frame and second switching point.
The x time of Wimax system wireless frame descending sub frame equals the finish time of second switching point of TD-SCDMA system wireless frame, and the x time of Wimax system wireless frame sub-frame of uplink equals the finish time of first switching point of TD-SCDMA system wireless frame.
Step 130 when the position of TD-SCDMA system wireless frame uplink and downlink time slot switching point changes, is obtained the timing information of the radio frames of TD-SCDMA system again, returns step 110.
Should be provided with one and switch time, before the position of TD-SCDMA system wireless frame uplink and downlink time slot switching point changes constantly, prior notice Wimax system, the time that shifts to an earlier date should be more than or equal to described switching time.
Above-mentioned frame time is adjusted control module can be divided into arithmetic element and communication unit, wherein arithmetic element is used for the timing information according to the radio frames of TD-SCDMA system, comprise the initial moment of two switching points in the frame and the information of the finish time, determine the length and the x time thereof of Wimax system wireless frame descending sub frame and sub-frame of uplink; Communication unit be used to obtain the TD-SCDMA system radio frames timing information and output to arithmetic element, and Wimax system wireless frame descending sub frame and the length of sub-frame of uplink and the base station that x time is delivered to the Wimax system thereof that arithmetic element is determined.The TD-SCDMA system also comprises a timing information update notification module, is used for when the timing information of its radio frames changes, with the communication unit in the radio frames timing information notification frame time adjustment control module after upgrading.
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.
For example, if the position of the switching point of first TDD system can not change, then needn't carry out step 130.
Claims (15)
1. the launching technique of a Wimax system wireless frame is applied to the situation of Wimax system and TD-SCDMA coexistence of systems, may further comprise the steps:
(a), determine the length and the x time thereof of descending sub frame and sub-frame of uplink in the Wimax system wireless frame by the requirement of two similar switching points alignment of system according to the timing information of TD-SCDMA system wireless frame;
(b) base station of Wimax system is according to the moment transmitting downstream subframe of determining, and in the ascending control information that sends the x time of indication sub-frame of uplink.
2. the launching technique of radio frames as claimed in claim 1 is characterized in that:
The timing information of described TD-SCDMA system wireless frame comprise determine in the frame two initial moment of switching point and the finish time required information.
3. the launching technique of radio frames as claimed in claim 1 is characterized in that:
In the step (a), the length of Wimax system wireless frame descending sub frame equals the time between zero hour of TD-SCDMA system wireless frame second switching point finish time and next first switching point of radio frames; The length of Wimax system wireless frame sub-frame of uplink equals the time between zero hour of first switching point finish time of TD-SCDMA system wireless frame and second switching point, and the length of the radio frames of the TD-SCDMA system of indication is 5ms herein.
4. the launching technique of radio frames as claimed in claim 1 is characterized in that:
In the step (a), the x time of Wimax system wireless frame descending sub frame equals the finish time of second switching point of TD-SCDMA system wireless frame, and the x time of Wimax system wireless frame sub-frame of uplink equals the finish time of first switching point of TD-SCDMA system wireless frame.
5. the launching technique of radio frames as claimed in claim 1 is characterized in that:
Step (b) also comprises step (c) afterwards: when the position of TD-SCDMA system wireless frame uplink and downlink time slot switching point changes, obtain the current timing information of TD-SCDMA system wireless frame again, return step (a).
6. the launching technique of radio frames as claimed in claim 1 is characterized in that:
In the step (c), before the position of TD-SCDMA system wireless frame uplink and downlink time slot switching point changes constantly, prior notice Wimax system, the time that shifts to an earlier date should be more than or equal to the switching time of setting.
7. the launching technique of radio frames as claimed in claim 1 is characterized in that:
The clock of Wimax system and TD-SCDMA system base-station keeps synchronously.
8. the launching technique of radio frames during two kinds of TDD coexistence of systems, the frame length of these two TDD system wireless frames is identical, all has a switching point that is up to a descending switching point and a downstream-to-upstream, it is characterized in that: wherein second TDD system carries out the emission of radio frames according to the timing information of first TDD system wireless frame, may further comprise the steps:
(a), determine the length and the x time thereof of descending sub frame and sub-frame of uplink in second TDD system wireless frame by the requirement of two similar switching points alignment of system according to the timing information of first TDD system wireless frame;
(b) base station of second TDD system is according to the moment transmitting downstream subframe of determining, and in the ascending control information that sends the x time of indication sub-frame of uplink.
9. the launching technique of radio frames as claimed in claim 8 is characterized in that:
The radio frames of described first TDD system comprises first descending sub frame, first switching point, sub-frame of uplink, second switching point and second descending sub frame, the radio frames of described second TDD system comprises descending sub frame, first switching point, sub-frame of uplink and second switching point, and the clock of the base station of two systems keeps synchronously;
The timing information of first TDD system wireless frame of step (a) comprises the information of determining that two switching point starting and endings are constantly required; The length of determined second TDD system wireless frame descending sub frame equals the time between zero hour of first TDD system wireless frame second switching point finish time and next first switching point of radio frames; The length of determined second TDD system wireless frame sub-frame of uplink equals the time between zero hour of first switching point finish time of first TDD system wireless frame and second switching point; The x time of determined second TDD system wireless frame descending sub frame equals the finish time of second switching point of first TDD system wireless frame; The x time of determined second TDD system wireless frame sub-frame of uplink equals the finish time of first first switching point of TDD system wireless frame.
10. the launching technique of radio frames as claimed in claim 8 is characterized in that:
Step (b) also comprises step (c) afterwards: when the position of first TDD system wireless frame uplink and downlink time slot switching point changes, second TDD system of prior notice, second TDD system obtains the current timing information of TD-SCDMA system wireless frame again, return step (a), the time that shifts to an earlier date should be more than or equal to the switching time of setting.
11. system that comprises the TDD system of two coexistences, comprise first TDD system and second TDD system, the frame length of two TDD system wireless frames is identical, and all has a switching point that is up to a descending switching point and a downstream-to-upstream, it is characterized in that:
Also comprise the frame time adjustment control module that links to each other with described two TDD systems, this module comprises:
Arithmetic element, be used for timing information according to the radio frames of first TDD system, comprise determine in the frame two initial moment of switching point and the finish time required information, determine the length and the x time thereof of second TDD system wireless frame descending sub frame and sub-frame of uplink;
Communication unit, the timing information that is used to obtain first TDD system wireless frame is exported to described arithmetic element, and second TDD system wireless frame descending sub frame that described arithmetic element is determined and the length of sub-frame of uplink and the base station that x time is delivered to second TDD system thereof.
12. system as claimed in claim 11 is characterized in that:
The radio frames of described first TDD system comprises first descending sub frame, first switching point, sub-frame of uplink, second switching point and second descending sub frame, the radio frames of described second TDD system comprises descending sub frame, first switching point, sub-frame of uplink and second switching point, and the clock of the base station of two systems keeps synchronously;
The timing information of first TDD system wireless frame that described arithmetic element is obtained comprise determine two initial moment of switching point and the finish time required information, the length of determined second TDD system wireless frame descending sub frame equals the time between zero hour of first TDD system wireless frame second switching point finish time and next first switching point of radio frames; The length of determined second TDD system wireless frame sub-frame of uplink equals the time between zero hour of first switching point finish time of first TDD system wireless frame and second switching point; The x time of determined second TDD system wireless frame descending sub frame equals the finish time of second switching point of first TDD system wireless frame; The x time of determined second TDD system wireless frame sub-frame of uplink equals the finish time of first first switching point of TDD system wireless frame.
13. system as claimed in claim 11 is characterized in that:
Described first TDD system also comprises a timing information update notification module, is used for when the timing information of its radio frames changes, with the communication unit in the radio frames timing information notification frame time adjustment control module after upgrading.
14., it is characterized in that as claim 11,12 or 13 described systems:
Described first TDD system is the TD-SCDMA system, and described second TDD system is the Wimax system.
15. the launching technique of a Wimax system wireless frame, be applied to the situation of Wimax system and TD-SCDMA coexistence of systems, the delivery time of Wimax system is postponed, its descending sub frame is alignd with the starting position of second descending sub frame of TD-SCDMA system wireless frame, sub-frame of uplink aligns with the starting position of the sub-frame of uplink of TD-SCDMA system wireless frame, and keeps the length unanimity of similar transfer point.
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| CN102264076A (en) * | 2010-05-28 | 2011-11-30 | 电信科学技术研究院 | Method, system and equipment for transmitting signals during joint networking of systems |
| WO2012000276A1 (en) * | 2010-06-30 | 2012-01-05 | 中兴通讯股份有限公司 | Method for radio frame transmission and base station in wimax system |
| CN102377722A (en) * | 2010-08-09 | 2012-03-14 | 财团法人工业技术研究院 | Apparatus and method for co-existence between different radio access technologies |
| CN102457967A (en) * | 2010-10-28 | 2012-05-16 | 华为技术有限公司 | Data transmission method and equipment |
| CN102523065A (en) * | 2011-12-15 | 2012-06-27 | 大唐移动通信设备有限公司 | Vertical hold control method and vertical hold control device between TDD (Time Division Duplex) systems |
| CN102695280A (en) * | 2012-06-26 | 2012-09-26 | 华为技术有限公司 | System-compatible data frame conversion method and device |
| CN103098412A (en) * | 2012-10-29 | 2013-05-08 | 华为技术有限公司 | Initialization method, device and system |
| CN103457628A (en) * | 2013-08-19 | 2013-12-18 | 京信通信系统（中国）有限公司 | TD-LTE wave detection synchronization method and system |
| CN104113905A (en) * | 2013-04-17 | 2014-10-22 | 华为技术有限公司 | Downlink data transmitting and receiving method, and access point AP and station STA thereof |
| CN107333270A (en) * | 2016-04-28 | 2017-11-07 | 华为技术有限公司 | A kind of cellular system and its control method, relevant device |
| CN108141848A (en) * | 2015-08-31 | 2018-06-08 | 株式会社Ntt都科摩 | User terminal, wireless base station and wireless communications method |
| WO2019041761A1 (en) * | 2017-08-30 | 2019-03-07 | 华为技术有限公司 | Dynamic time adjustment method, apparatus and system |
| EP3703302A1 (en) | 2019-03-01 | 2020-09-02 | Telefonica, S.A. | Method and device for minimizing interferences between tdd communications networks |
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2007
- 2007-04-03 CN CN 200710096233 patent/CN101282168B/en not_active Expired - Fee Related
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| CN102264076B (en) * | 2010-05-28 | 2013-10-16 | 电信科学技术研究院 | Method, system and equipment for transmitting signals during joint networking of systems |
| CN102264076A (en) * | 2010-05-28 | 2011-11-30 | 电信科学技术研究院 | Method, system and equipment for transmitting signals during joint networking of systems |
| WO2012000276A1 (en) * | 2010-06-30 | 2012-01-05 | 中兴通讯股份有限公司 | Method for radio frame transmission and base station in wimax system |
| CN102315877A (en) * | 2010-06-30 | 2012-01-11 | 中兴通讯股份有限公司 | Wireless frame emission method of Wimax system and base station |
| CN102377722A (en) * | 2010-08-09 | 2012-03-14 | 财团法人工业技术研究院 | Apparatus and method for co-existence between different radio access technologies |
| CN102377722B (en) * | 2010-08-09 | 2014-07-23 | 财团法人工业技术研究院 | Apparatus and method for co-existence between different radio access technologies |
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| CN102457967B (en) * | 2010-10-28 | 2014-11-19 | 华为技术有限公司 | Data transmission method and equipment |
| CN102523065A (en) * | 2011-12-15 | 2012-06-27 | 大唐移动通信设备有限公司 | Vertical hold control method and vertical hold control device between TDD (Time Division Duplex) systems |
| CN102695280A (en) * | 2012-06-26 | 2012-09-26 | 华为技术有限公司 | System-compatible data frame conversion method and device |
| CN103098412A (en) * | 2012-10-29 | 2013-05-08 | 华为技术有限公司 | Initialization method, device and system |
| CN103098412B (en) * | 2012-10-29 | 2015-04-29 | 华为技术有限公司 | Initialization method, device and system |
| CN104113905A (en) * | 2013-04-17 | 2014-10-22 | 华为技术有限公司 | Downlink data transmitting and receiving method, and access point AP and station STA thereof |
| CN104113905B (en) * | 2013-04-17 | 2017-12-29 | 华为技术有限公司 | Downlink data method of sending and receiving and its access point AP and site STA |
| CN103457628B (en) * | 2013-08-19 | 2015-07-01 | 京信通信系统（中国）有限公司 | TD-LTE wave detection synchronization method and system |
| CN103457628A (en) * | 2013-08-19 | 2013-12-18 | 京信通信系统（中国）有限公司 | TD-LTE wave detection synchronization method and system |
| CN108141848B (en) * | 2015-08-31 | 2022-05-31 | 株式会社Ntt都科摩 | Terminal, wireless communication method, base station and system |
| CN108141848A (en) * | 2015-08-31 | 2018-06-08 | 株式会社Ntt都科摩 | User terminal, wireless base station and wireless communications method |
| CN107333270A (en) * | 2016-04-28 | 2017-11-07 | 华为技术有限公司 | A kind of cellular system and its control method, relevant device |
| US11025362B2 (en) | 2017-08-30 | 2021-06-01 | Huawei Technologies Co., Ltd. | Dynamic time adjustment method, apparatus, and system |
| WO2019041761A1 (en) * | 2017-08-30 | 2019-03-07 | 华为技术有限公司 | Dynamic time adjustment method, apparatus and system |
| EP3703302A1 (en) | 2019-03-01 | 2020-09-02 | Telefonica, S.A. | Method and device for minimizing interferences between tdd communications networks |
| WO2020178229A1 (en) | 2019-03-01 | 2020-09-10 | Telefonica, S.A. | Method and device for minimizing interferences between tdd communications networks |
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