CN101262274B - A base station and method for configuring time division duplex system frame structure - Google Patents
A base station and method for configuring time division duplex system frame structure Download PDFInfo
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Abstract
The invention discloses a method for configuring frame structure and the corresponding relationship between parameters of the frame structure and cell types is set. The method comprises the steps as follows: A. the type of the cell to be covered is confirmed according to the network environment; B. the parameter of the frame structure is confirmed according to the confirmed type of the cell, and the frame structure is set according to the confirmed parameter of the frame structure, which is sent out by broadcast. For the micro-cell environment, the invention adopts the proposal of reducing cyclic prefixes so as to obtain the required guard space between switching points of uplink and downlink, while for the macro-cell environment, the invention adopts the proposal of reducing the use of OFDM symbols in the time slot so as to obtain the required guard space between switching points of downlink and uplink. The invention solves the problem existing in the prior art that the utilization efficiency of system resources is low. The invention also discloses a base station.
Description
Technical field
The present invention relates to the mobile communication technology field, the method for particularly a kind of base station and configuring time division duplex system frame structure thereof.
Background technology
In international mobile communication/internet mobile communication (IMT-Advanced) system of the advanced person of International Telecommunications Union (International Telecommunications Union:ITU), the bandwidth of maximum wireless communication can reach 100MHz.By broadband wireless communications, the user can enjoy data at a high speed and download, shopping online, mobile video chat, the wireless mobile service that mobile TV etc. are numerous.The transmission rate of IMT-Advanced system maximum can reach 1Gbps, has greatly satisfied user's the demand for wireless mobile communications.
For wireless communication bandwidth, use time division duplex (TDD) mode 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; Uplink and downlink works is in same frequency, and the symmetry characteristic of radio wave propagation makes it multi-antenna technology easy to use, reaches the purpose that improves performance, reduces cost.
Frame structure for the TDD system; in a frequency range, there are ascending time slot and descending time slot simultaneously; be respectively applied for and transmit upstream data and downlink data; there is protection (Guard Period:GP) at interval between descending time slot and the ascending time slot, is used to avoid of the interference of the data of descending time slot upward signal.
In different scenes, the configuration of required uplink and downlink timeslot is different, thereby the quantity of up-downgoing switching point may be different.For the TDD system, for fear of the interference between the uplink and downlink timeslot, the time slot alignment is most important constraints.
As shown in Figure 1; in existing TDD system; a protection interval of definition GP between descending pilot frequency time slot (DwPTS) and uplink pilot time slot (UpPTS); this GP is referred to as down up protection (Downlink Uplink Switching Point:DUSP) at interval, also has a up-downgoing protection (Uplink Downlink Switching Point:UDSP) at interval.
Wherein, final stage all has a protection (Timeslot Interval) at interval in each time slot, supposes that TS0, TS4, TS5 and TS6 are descending time slots, and TS1, TS2 and TS3 are ascending time slots; then the protection between TS3 and the TS4 is spaced apart UDSP, and other protection is spaced apart blank spaces.
For the TDD system, DUSP is as the downstream signal protection interval that emission is disturbed to upward signal, and its length legislations the size of coverage radius of cell.Make that the DUSP time span is T
GP, so Zui Da radius of society is R=T
GP* V
0/ 2, V wherein
0Be electromagnetic speed.If T
GP=75 μ s, the then maximum radius of society of supporting is R=11.25Km.
In addition, the quantity of up-downgoing transfer point is determining the size of TDD system minimum transfer time delay.If subscriber equipment (UE) has a upstream message to need to send, UE at first sends the information of resource bid by ascending time slot, through after the UDSP, the UE resource allocation information is notified in the base station in descending time slot, through after the DUSP, UE just can send data in the appointment physical resource in ascending time slot again.
At present, in order to reduce the propagation delay time of system, require to increase protection at interval, existing method one is that a time slot is become transfer point, because the structure of time slot of TDD system is fixed, increases the utilization ratio that the up-downgoing transfer point can reduce system resource like this.
Existing method two is that the length with GP reduces by half, the GP that second half retention time is used to increase newly.But the frame structure after the increase GP is compared with original frame structure variation has been taken place, and can not guarantee strict alignment relation between the time slot; And this has also influenced the covering radius of system.
In sum, in order to increase protection at interval, make system resource utilization efficient reduce at present, can not guarantee strict alignment relation between the time slot, and influence the covering radius of system.
Summary of the invention
The embodiment of the invention provides the method for a kind of base station and configuring time division duplex system frame structure thereof, in order to solve the inefficient problem of system resource utilization that exists in the prior art.
A kind of method of configuring time division duplex system frame structure is provided with the corresponding relation of frame structure parameter and cell type, and this method comprises:
A, determine the type of coverage cell according to network environment;
The described cell type that B, basis are determined is determined described frame structure parameter, according to the described frame structure parameter of determining frame structure is configured, and the described frame structure parameter of determining is passed through broadcast transmission.
Comprise a plurality of time slots in the described frame structure, described each time slot comprises at least one OFDM multi-channel multiplexing symbols, and described OFDM multi-channel multiplexing symbols comprises a Cyclic Prefix, and described cell type comprises Microcell,
If the type of the described coverage cell of determining in the steps A is a Microcell, then among the step B, the described frame structure parameter of determining is a Microcell frame structure parameter, frame structure is configured also comprise the following steps:
B11, with the part of described Cyclic Prefix at interval as protection according to the covering radius of sub-district.
Described cell type comprises macrocell,
If the type of coverage cell described in the steps A is a macrocell, then among the step B, the described frame structure parameter of determining is a macrocell frame structure parameter, frame structure is configured also comprise the following steps:
B21, with at least one described OFDM multi-channel multiplexing symbols at interval as described protection according to the covering radius of sub-district.
Described protection position at interval is the end part of previous time slot or the beginning part of a back time slot.
A kind of time division duplex radio communication base station comprises:
Memory module is used to preserve the corresponding relation of frame structure parameter and cell type;
Processing module is used for determining according to network environment the type of coverage cell;
Configuration module, be used for the described cell type determined in the corresponding relation of the described frame structure parameter of preserving and described cell type and the described processing module according to described memory module, determine described frame structure parameter, frame structure is configured according to the described frame structure parameter of determining;
Sending module is used for the described frame structure parameter that described configuration module is determined is passed through broadcast transmission.
Comprise a plurality of time slots in the described frame structure, described each time slot comprises at least one OFDM multi-channel multiplexing symbols, and described OFDM multi-channel multiplexing symbols comprises a Cyclic Prefix, and described cell type comprises Microcell and macrocell,
Then described configuration module also comprises:
Construction module, be used for when the type of the definite described coverage cell of described processing module is Microcell, determine that described frame structure parameter is a Microcell frame structure parameter, when the type of the definite described coverage cell of described processing module is macrocell, determine that described frame structure parameter is a macrocell frame structure parameter;
First Executive Module is used for when the described frame structure parameter that described first construction module is determined is Microcell frame structure parameter, according to the covering radius of sub-district with the part of described Cyclic Prefix as protection at interval;
Second Executive Module is used for when the described frame structure parameter that described first construction module is determined is Microcell frame structure parameter, according to the covering radius of sub-district with at least one described OFDM multi-channel multiplexing symbols as described protection interval.
Described protection position at interval is the end part of previous time slot or the beginning part of a back time slot.
Preserve the corresponding relation of frame structure parameter and cell type in the base station that the embodiment of the invention provides, determined the type of coverage cell according to network environment; Determine the frame structure parameter according to the cell type of determining, frame structure is configured, the frame structure parameter of determining is passed through broadcast transmission according to the frame structure parameter of determining.Thereby improved the utilization ratio of system resource; and under the condition that does not change the time slot alignment relation; can increase protection flexibly at interval; guaranteed that identical frame structure can be applied to different scenes flexibly; guaranteed the stable of system configuration; the complexity of minimizing system is for the realization of broadband wireless device provides effective solution.
Description of drawings
Fig. 1 is the frame structure schematic diagram of prior art TDD system;
Fig. 2 is the structural representation of time division duplex radio communication base station in the embodiment of the invention;
Fig. 3 is the frame structure schematic diagram of TDD system in the embodiment of the invention;
Fig. 4 is the schematic diagram of blank spaces for the UDSP that increases in the embodiment of the invention;
Fig. 5 is that Microcell increases protection schematic diagram at interval in the embodiment of the invention;
Fig. 6 is the schematic diagram that macrocell increases protection partitioning method one in the embodiment of the invention;
Fig. 7 is the schematic diagram that macrocell increases protection partitioning method two in the embodiment of the invention;
Fig. 8 is the method flow diagram of configuring time division duplex system frame structure in the embodiment of the invention;
Fig. 9 is the method flow diagram of configuration macrocell time division duplex system frame structure in the embodiment of the invention.
Embodiment
At the inefficient problem of the system resource utilization that exists in the present prior art, preserved the corresponding relation of frame structure parameter and cell type in the base station that the embodiment of the invention provides, determine the type of coverage cell according to network environment; Determine the frame structure parameter according to the cell type of determining, frame structure is configured, the frame structure parameter of determining is passed through broadcast transmission according to the frame structure parameter of determining.Thereby the problems referred to above have been solved.
As shown in Figure 2, the time division duplex radio communication base station comprises in the embodiment of the invention: memory module 100, processing module 110, configuration module 120 and sending module 130.
Configuration module 120, be connected with memory module 100, processing module 110 and sending module 130, be used for definite cell type in the corresponding relation of the frame structure parameter of preserving and cell type and the processing module 110 according to memory module 100, determine the frame structure parameter, frame structure is configured according to the frame structure parameter of determining.
Wherein, configuration module 120 also comprises: construction module 1200, first Executive Module 1201 and second Executive Module 1202.
First Executive Module 1201 is used for when the frame structure parameters that construction module 1200 is determined are Microcell frame structure parameter, according to the covering radius of sub-district with the part of the Cyclic Prefix in the OFDM multi-channel multiplexing symbols as protection at interval.
Second Executive Module 1202 is used for when the frame structure parameters that construction module 1200 is determined are Microcell frame structure parameter, according to the covering radius of sub-district with at least one OFDM multi-channel multiplexing symbols as protection at interval.
Protection position at interval is the end part of previous time slot or the beginning part of a back time slot.
As shown in Figure 3, in the frame structure schematic diagram of TDD system, suppose that TS0, TS3, TS4, TS7 and TS8 are descending time slot in the embodiment of the invention, TS1, TS2, TS5 and TS6 are ascending time slot.
The present invention will protect at interval and remove, and so just reduce time delay, increase protection at interval at uplink and downlink timeslot and following ascending time slot conversion place.Such as: increase UDSP at TS2 and TS3 conversion place, can take TS2 end part or TS3 and begin part, TS1 and TS2 can also be shifted to an earlier date 10 microseconds, take a DUSP part, then just having a blank spaces between TS2 and the TS3 is UDSP, as shown in Figure 4.
DUSP can only take TS4 end part or TS5 begins part if increase in TS4 and TS5 conversion place.
As shown in Figure 5, suppose frame structure, begin part at TS5 and increase DUSP, and the sub-district at place is a Microcell by TDD system shown in Figure 3.
A time slot comprises 6 Orthodoxy Frequency Division Multiplexs (OFDM) symbol among the figure, each OFDM symbol comprises a Cyclic Prefix (CP) and a fast Flourier (FFT) symbol, FFT symbol lengths 50 μ s, CP length 6.25 μ s, each CP is shortened to 3.25 μ s, and the GP that then will partly obtain 18 μ s in the beginning of time slot is used for DUSP.
If in the end of TS4 part, then GP is put into the last of time slot.
As shown in Figure 6, suppose frame structure, begin part at TS5 and increase DUSP, and the sub-district at place is a macrocell by TDD system shown in Figure 3.
A time slot comprises 6 OFDM symbols among the figure, and each OFDM symbol comprises a CP and a FFT symbol, FFT symbol lengths 50 μ s, CP length 6.25 μ s, whole OFDM symbol is used for DUSP as GP, and then DUSP is 56.25 μ s, can cover 8.4 kilometers sub-district.Certainly,, then can take next OFDM symbol, perhaps shown in Fig. 7, take the part of remaining CP if the covering radius of sub-district is bigger than 8.4 kilometers.
If in the end of TS4 part, then GP is put into the last of time slot.
As shown in Figure 8, the method for configuring time division duplex system frame structure comprises the following steps: in the embodiment of the invention
The type of coverage cell is determined in step 801, base station according to network environment.
The frame structure parameter is determined according to the cell type of determining in step 802, base station, according to the frame structure parameter of determining frame structure is configured, and the frame structure parameter of determining is passed through broadcast transmission.
If cell type is a Microcell, then the frame structure parameter is a Microcell frame structure parameter, according to the covering radius of sub-district with the part of Cyclic Prefix as protection at interval.
If cell type is a macrocell, then the frame structure parameter is a macrocell frame structure parameter, according to the covering radius of sub-district with at least one OFDM multi-channel multiplexing symbols as protection at interval.
Protection position at interval is the end part of previous time slot or the beginning part of a back time slot.
Fig. 9 comprises the following steps: for the method for configuration macrocell time division duplex system frame structure in the embodiment of the invention
The beginning part that places a back time slot at interval will be protected in step 904, base station.
Broadcast transmission is passed through with the macrocell frame structure parameter of determining in step 905, base station.
From the foregoing description as can be seen: preserved the corresponding relation of frame structure parameter and cell type in the base station that the embodiment of the invention provides, determined the type of coverage cell according to network environment; Determine the frame structure parameter according to the cell type of determining, frame structure is configured, the frame structure parameter of determining is passed through broadcast transmission according to the frame structure parameter of determining.Thereby improved the utilization ratio of system resource; and under the condition that does not change the time slot alignment relation; can increase protection flexibly at interval; guaranteed that identical frame structure can be applied to different scenes flexibly; needn't design kinds of frame for adapting to various situations; guaranteed the stable of system configuration, reduced the complexity of system, for the realization of broadband wireless device provides effective solution.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (4)
1. the method for a configuring time division duplex system frame structure, it is characterized in that, the corresponding relation of frame structure parameter and cell type is set, comprise a plurality of time slots in the frame structure, described each time slot comprises at least one OFDM multi-channel multiplexing symbols, described OFDM multi-channel multiplexing symbols comprises a Cyclic Prefix, and this method comprises:
When determining that according to network environment the type of coverage cell is Microcell, determine Microcell frame structure parameter, according to the Microcell frame structure parameter of determining frame structure is configured, with the described Microcell frame structure parameter determined by broadcast transmission, when wherein frame structure being configured according to the covering radius of sub-district as protection at interval with the part of described Cyclic Prefix;
When determining that according to network environment the type of coverage cell is macrocell; determine macrocell frame structure parameter; according to the macrocell frame structure parameter of determining frame structure is configured; with the described macrocell frame structure parameter determined by broadcast transmission, when wherein frame structure being configured according to the covering radius of sub-district with at least one described OFDM multi-channel multiplexing symbols as described protection interval.
2. the method for claim 1 is characterized in that, described protection position at interval is the end part of previous time slot or the beginning part of a back time slot.
3. a time division duplex radio communication base station is characterized in that, this base station comprises:
Memory module is used to preserve the corresponding relation of frame structure parameter and cell type;
Processing module is used for determining according to network environment the type of coverage cell;
Configuration module, be used for the described cell type determined in the corresponding relation of the described frame structure parameter of preserving and described cell type and the described processing module according to described memory module, determine described frame structure parameter, frame structure is configured according to the described frame structure parameter of determining;
Sending module is used for the described frame structure parameter that described configuration module is determined is passed through broadcast transmission;
Wherein, comprise a plurality of time slots in the frame structure, described each time slot comprises at least one OFDM multi-channel multiplexing symbols, and described OFDM multi-channel multiplexing symbols comprises a Cyclic Prefix, and described cell type comprises Microcell and macrocell;
Described configuration module also comprises:
Construction module, be used for when the type of the definite described coverage cell of described processing module is Microcell, determine that described frame structure parameter is a Microcell frame structure parameter, when the type of the definite described coverage cell of described processing module is macrocell, determine that described frame structure parameter is a macrocell frame structure parameter;
First Executive Module is used for when the described frame structure parameter that described construction module is determined is Microcell frame structure parameter, according to the covering radius of sub-district with the part of described Cyclic Prefix as protection at interval;
Second Executive Module is used for when the described frame structure parameter that described construction module is determined is macrocell frame structure parameter, according to the covering radius of sub-district with at least one described OFDM multi-channel multiplexing symbols as described protection interval.
4. base station as claimed in claim 3 is characterized in that, described protection position at interval is the end part of previous time slot or the beginning part of a back time slot.
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| CN101764708B (en) * | 2009-12-25 | 2012-07-18 | 中兴通讯股份有限公司 | Method and device for scene-based rapid data configuration in telecom network management system |
| US9204287B2 (en) | 2012-05-15 | 2015-12-01 | Futurewei Technologies, Inc. | System and method for reducing signaling overhead |
| CN104854939B (en) * | 2013-02-06 | 2019-04-12 | 东莞宇龙通信科技有限公司 | Configuration method, base station and the system of TDD ascending-descending subframes ratio |
| ES2834405T3 (en) * | 2015-12-25 | 2021-06-17 | Huawei Tech Co Ltd | Method, device and system for transmitting and receiving information |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538639A (en) * | 1997-06-13 | 2004-10-20 | ����ɭ�绰�ɷ�����˾ | Method and devices in radio communication 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 |
| CN1917420A (en) * | 2005-08-17 | 2007-02-21 | 大唐移动通信设备有限公司 | Transmission method of time division duplexing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1538639A (en) * | 1997-06-13 | 2004-10-20 | ����ɭ�绰�ɷ�����˾ | Method and devices in radio communication 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 |
| CN1917420A (en) * | 2005-08-17 | 2007-02-21 | 大唐移动通信设备有限公司 | Transmission method of time division duplexing system |
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