CN103501217B - Use the data transmission method of Frame - Google Patents
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Abstract
Use data transmission method and the equipment of Frame.The method and apparatus that the present invention relates to use frame to carry out data transmission in a broadband wireless communication system.The method for data transmission according to the present invention comprises the following steps: be provided for being sent by up-link and downlink and being received the Frame of data；And sent by set Frame and receive data.Described Frame includes at least one or more first kind subframe and at least one or more Second Type subframe, and the quantity of the data symbol that this Second Type subframe includes is different from the quantity of the data symbol of this first kind subframe.
Description
The application is the divisional application of the application for a patent for invention (international application no: PCT/KR2009/007646, the applying date: on December 21st, 2009, denomination of invention: use data transmission method and the equipment of Frame) of original bill Application No. 200980151718.8.
Technical field
The method and apparatus that the present invention relates to be applicable to the common frame structure of various bandwidth and use this frame structure to send and receive data.
Background technology
According to communication technology, mobile communication system the business provided gradually is evolved to miscellaneous service, sends/reception business (to transmit substantial amounts of data), multi-media broadcasting service and voice communication service etc. including grouped data.
The third generation communication service (such as WCDMA) of current operation allows to send and receive substantial amounts of data and speech data with higher transfer rate, and in order to create the broader evolvement network of bandwidth, carrying out the standardization to Long Term Evolution (LTE) network, IEEE802.16m etc. in view of quickly increasing of desired data business volume.
Specifically, IEEE802.16m purpose is, while holding with existing terminals based on 802.16 standards (or subscriber equipment) and the compatibility of base station equipment, exploitation can meet the required standard of IMT AS.
The IMT advanced communication system (ACS) of this evolution is broadband wireless access communication system using multi, it is characterised in that it has wide coverage and supports quick transfer rate.In order to support broadband transmission network at physical channel, broadband wireless access communication system using multi uses OFDM (OFDM) and OFDM (OFDMA).In OFDM/OFDMA scheme, by using multiple subcarriers to send and receive physical channel signal, thus realize high-speed data communication.
Fig. 1 shows up (UL) and descending (DL) frame structure of the broadband wireless access communication system using multi using OFDM/OFDMA scheme.
With reference to Fig. 1, this uplink and downlink frame structure includes region below: lead code 101, frame control header (FCH) 102, DL-MAP103, UL-MAP104 and multiple data burst.
Send for obtaining the preamble sequence being mutually in step between a base station and a terminal (i.e. by lead code 101 region, synchronizing signal), the channel allocation information relevant with DL-MAP103 and channel code information is provided by FCH102 region, further, data burst channel allocation information in both the downlink and uplink is provided by DL-MAP103, UL-MAP104 region.The guard time for distinguishing these frames is inserted between uplink frame and downlink frame.TTG(sends/receives conversion interval) it is the guard time between downlink burst and uplink burst subsequently.RTG(receives/sends conversion interval) it is the guard time between uplink burst and downlink burst subsequently.
Require that IMT AS supports various bandwidth, and specifically, IEEE802.16m( carrying out the standardization to it) define the bandwidth of such as 5MHz, 7MHz, 8.75MHz, 10MHz, 20MHz etc., as the bandwidth of system channel.But, current IMT AS does not limit the frame structure of essence, and specifically, in the case of IEEE802.16m, if designing multiple frame individually for each bandwidth, then can increase system complexity.It addition, when arranging the length of Cyclic Prefix (CP) of frame changeably, frame structure can change, and in this case, when single communication system uses two frame structures being respectively provided with different CP length, the problem that interference occurs between neighbor cell can be produced.
Summary of the invention
Therefore, it is an object of the present invention to provide a kind of frame structure and the method and apparatus sending and receiving data by this frame structure, this frame structure can be universally applied to the various bandwidth required by system.
To achieve these goals, it is provided that a kind of method transmitting data in broadband wireless system, the method comprises the following steps: be provided for being sent by up-link and downlink and being received the Frame of data；And sent by set Frame and receive data, wherein, Frame includes one or more first kind subframe and one or more Second Type subframe, and the quantity of the data symbol that this Second Type subframe includes is different from the quantity of the data symbol of this first kind subframe.
First kind subframe be configurable to include 6 data symbols as a unit, Second Type subframe be configurable to include 5 data symbols as a unit, and described Frame may be configured such that the quantity of first kind subframe maximizes.
To achieve these goals, also providing for a kind of equipment for sending and receive data, this equipment includes: transceiver, and it is configured to downlink and up-link sends and receives data；And controller, it is configured to arrange Frame and control described transceiver sent by set Frame and receive data, described Frame includes one or more first kind subframe and one or more Second Type subframe, the quantity of the data symbol that this Second Type subframe includes and the quantity of the data symbol of this first kind subframe, wherein, described Frame is configured so that the quantity of described first kind subframe maximizes by described controller.
To achieve these goals, also providing for a kind of method at time division duplex (TDD) type OFDM (OSDMA) transmitting data in communication system, the method comprises the following steps: arrange the Frame including multiple subframe；And send data by set Frame, wherein, the Cyclic Prefix (CP) of described Frame is the 1/16 of the length of effective OFDMA symbol, the bandwidth of transmission channel is 7MHz, and described Frame is configured to be configured to include that 6 data symbols maximize as the quantity of the subframe of a unit.
The descending sub frame of described Frame and the ratio of sub-frame of uplink can be K:J, the quantity of the data symbol distributing to downlink can be 6*K-1, the quantity of the data symbol distributing to up-link can be 6*J, one data symbol is distributed to TTG(and sends/receive conversion interval), and last subframe of downlink is configurable to include that 5 symbols are as a unit.
The descending sub frame of described Frame and the ratio of sub-frame of uplink can be 5:1, first subframe of downlink to the subframe of the 4th subframe and up-link be configurable to include 6 symbols as a unit, and the 5th subframe of downlink is configurable to include that 5 symbols are as a unit.
To achieve these goals, also providing for a kind of method at FDD (FDD) type OFDM (OSDMA) transmitting data in communication system, the method comprises the following steps: arrange the Frame including multiple subframe；And send data by set Frame, wherein, the Cyclic Prefix (CP) of described Frame is the 1/16 of the length of effective OFDMA symbol, the bandwidth of transmission channel is 7MHz, and described Frame is configured so that the subframe that is configured to only include comprising 6 data symbols as a unit.
To achieve these goals, also providing for a kind of equipment for sending and receive data, this equipment includes: transceiver, and it is configured to downlink and up-link sends and receives data；And controller, it is configured to arrange Frame and control described transceiver sent by set Frame and receive data, described Frame includes one or more subframe, this one or more subframe has the data symbol that quantity is n, wherein, described Frame is configured so that the quantity of described subframe maximizes by described controller.
The Cyclic Prefix (CP) of described Frame can be the 1/16 of the length of effective OFDMA symbol, and the bandwidth of transmission channel can be 7MHz, and the data symbol unit " n " of described subframe can be 6.
According to an illustrative embodiment of the invention, it is provided that a kind of frame structure that can be universally applied to require to support the system of various bandwidth, it is possible to prevent the problem that system complexity increases.
It addition, in TDD type Frame, be possible to prevent the interference being respectively provided with between downlink and the up-link of the frame of different CP length, and it is possible to provide the FDD frame with the common trait with tdd frame structure.
Accompanying drawing explanation
Fig. 1 is the figure of the uplink and downlink frame structure schematically showing broadband wireless access communication system using multi；
Fig. 2 is the figure schematically showing the OFDM/OFDMA symbolic construction used in an exemplary embodiment of the present invention；
Fig. 3 is the figure schematically showing the high-grade frame structure according to an exemplary embodiment of the present invention；
Fig. 4 is the figure schematically showing the FDD type frame structure according to an exemplary embodiment of the present invention；
Fig. 5 is the figure schematically showing the TDD type frame structure according to an exemplary embodiment of the present invention；
Fig. 6 is the figure of TDD and the FDD frame structure illustrating the another exemplary embodiment according to the present invention；
Fig. 7 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention；
Fig. 8 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention；
Fig. 9 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 10 is the figure of TDD and the FDD frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 11 is the figure of TDD and the FDD frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 12 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 13 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 14 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 15 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 16 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention；
Figure 17 is the schematic block diagram of the equipment for sending and receive data according to one exemplary embodiment.
Detailed description of the invention
The illustrative embodiments of the present invention is described in detail now with reference to accompanying drawing.Identical reference is used for representing same or analogous assembly all the time, and omits repetitive description.In the course of describing the present invention (s), if it is considered to explaining in detail of relevant known function or structure unnecessarily be deviate from the purport of the present invention, then omit this explanation, but skilled artisans appreciate that this explanation.In the drawings, in order to clearly can be with enlarged shape and size, and identical reference be used for representing same or analogous assembly all the time.Accompanying drawing is only given by chart, because of rather than limitation of the present invention.
Terminal according to an illustrative embodiment of the invention can also be referred to as subscriber board (SS), subscriber equipment (UE), mobile device (ME), mobile station (MS) etc..It addition, terminal can be to have the portable set (such as mobile phone, PDA, smart phone, notebook etc.) of communication function or non-portable device (such as PC) or mobile unit.
Fig. 2 is the figure schematically showing the OFDM/OFDMA symbolic construction used in an exemplary embodiment of the present invention.
In OFDM/OFDMA scheme; it is positioned at the specific interval before each symbol and is used as protection interval; this protection interval is not used by the impact in view of the intersymbol interference (ISI) caused due to echo; and as it can be seen, the part at the rear portion of symbol is replicated as protection interval and inserts.The front part being plugged in protection interval of symbol is referred to as Cyclic Prefix (CP).
When the total length of an OFDM symbol is Ts, and when the length of CP is Tg, the length of effective OFDM symbol is Tb, and wherein Tb is to obtain by getting rid of the length of CP from the total length Ts of OFDM symbol.
About being configured to the frame structure of OFDM/OFDMA symbol, may determine that the quantity of frame size and subframe and symbol according to frame parameter, as shown in following table 1:
[table 1]
When determining transmission channel band and the CP length of this system with reference to table 1, it may be determined that the quantity of OFDM symbol and for designing other parameter required of frame.
Frame structure is described in detail now with reference to accompanying drawing.
Fig. 3 is the figure schematically showing the high-grade frame structure according to an exemplary embodiment of the present invention.
As it is shown on figure 3, the frame structure being applied to system according to an illustrative embodiment of the invention include 5ms frame as basic element, and, this frame as basic single transmission unit can be defined to the interval between multiple lead code.
Frame can include multiple TTI(Transmission Time Interval), and TTI is in MAC(medium access control) elementary cell of scheduling performed in layer, and also serve as wireless resource allocation unit.
Frame includes at least one subframe, and the size of subframe is determined by symbol.In an exemplary embodiment of the present invention embodiment, subframe is defined to the subframe of 4 types altogether: Class1, type 2, type 3 and type 4.Class1 subframe includes 6 OFDM symbol.Type 2 subframe includes 7 OFDM symbol.Type 3 subframe includes 5 OFDM symbol.Type 4 subframe includes 9 OFDM symbol.
As it can be seen, define the superframe including multiple frame, and in this case, superframe such as can be configured by 20ms.When configuring superframe, select for initial fast cell and the system configuration information of low latency business is set to transmission unit, and broadcast message is set to transmission unit, and in general, 2 to 6 frames are configured to single superframe.It addition, include multiple subframe according to the single frame of 5ms, and each subframe includes multiple OFDM/OFDMA symbol.Each superframe includes a super-frame header (SFH), and super-frame header (SFH) includes broadcast channel, and SFH is positioned at first descending (DL) subframe of respective superframe.
Frame structure can be designed according to the bandwidth of system channel, duplexing schemes, CP length etc..
Fig. 4 is the figure schematically showing the FDD type frame structure according to an exemplary embodiment of the present invention.
In fdd mode, frequency domain is distinguished downlink transfer and uplink, and each subframe of each frame can be transmitted via uplink and downlink.Terminal in fdd mode can utilize specific descending sub frame to receive data burst, and access sub-frame of uplink simultaneously.
Fig. 4 defines the frame structure when channel width is 5MHz, 10MHz and 20MHz and CP length is 1/8Tb in fdd mode.20ms superframe includes 4 5ms frame F0, F1, F2 and F3, and a frame F2 includes that 8 subframes SF0, SF1, SF2, SF3, SF4, SF5, SF6 and SF7(length are respectively 0.617ms) and the free time interval of 62.86 μ s.Each sub-frame configuration is type 2 subframe including 7 OFDM symbol S0, S1, S2, S3, S4, S5 and S6.
Fig. 5 is the figure schematically showing the TDD type frame structure according to an exemplary embodiment of the present invention.
In tdd mode, time domain is distinguished downlink transfer and uplink, owing to distributing uplink transmission time interval at downlink times after being spaced, so sending via downlink or up-link or receiving data.
With similar, in Figure 5, the tdd mode frame structure when channel width is 5MHz, 10MHz and 20MHz and CP length is 1/8Tb is defined.20ms superframe includes 4 5ms frame F0, F1, F2 and F3, and, a frame F2 includes that 8 subframes SF0, SF1, SF2, SF3, SF4, SF5, SF6 and SF7(length are respectively 0.617ms) and the free time interval of 62.86 μ s.Frame F2 includes the continuous downlink frame of D quantity and the continuous uplink frame of U quantity determined according to descending with up ratio (D:U).When the ratio of DL and UL is 5:3,5 subframes SF0, SF1, SF2, SF3 and SF4 are configured to DL frame, and 3 subframes SF5, SF6 and SF7 are configured to uplink frame.The single idle characters being used for distinguishing DL and UL are inserted between last descending sub frame SF4 and the first sub-frame of uplink SF5, are switched to UL with notice from DL.The interval inserted between descending and up is referred to as TTG(and sends conversion interval), and the interval of insertion is referred to as RTG(reception conversion interval between up and descending), transmission terminates and reception terminates to distinguish downlink transfer and uplink whereby.
As it is shown in figure 5, last descending sub frame SF4 includes 5 OFDM symbol and last idle characters S5, and in this case, idle characters S5 is used as to distinguish the TTG of DL Yu UL.
Fig. 6 is the figure of TDD and the FDD frame structure illustrating the another exemplary embodiment according to the present invention.
Frame structure shown in Fig. 6 assumes that a length of 1/16Tb of CP and transmission channel bandwidth are the situation of 5MHz, 10MHz and 20MHz.In the case of tdd frame, it is assumed that the ratio of DL and UL is 5:3, and the length of TDD/FDD frame is essentially 5ms.The quantity of the OFDM symbol in a frame (tdd frame or FDD frame) is 48 altogether, and a frame includes 8 subframes altogether.Thus, it is different from situation about illustrating in figures 4 and 5, it is impossible to these subframes are all configured to same type.It is to say, be that Class1 subframe 610(includes 6 OFDM symbol by these sub-frame configuration) and type 2 subframe 620(include 7 OFDM symbol).
Class1 subframe 610 includes 6 OFDM symbol and has the length of 0.583ms.Type 2 subframe 620 includes 7 OFDM symbol and has the length of 0.680ms.Tdd frame is of the same size and identical sub-frame configuration with FDD frame, but in the case of tdd frame, because needing TTG between DL and UL, so last symbol of the 5th subframe SF4 is configured to idle characters 611.
As it has been described above, in the channel width of 5MHz, 10MHz and 20MHz, frame structure is configured so that, and the Class1 subframe including 6 symbols is basic subframe, and also this frame structure being configured so that, the quantity of basic subframe (Class1 subframe) maximizes.Because frame structure to be configured so that the quantity of basic subframe maximizes, so, when using frame send between transmitting terminal and receiving terminal and receive data, the minimum dimension of TTI is (i.e., elementary cell) it is subframe, as such, it is possible to use pilot tone and the same configuration of Resource Block and the design of physical layer (PHY) in top level.
Hereinafter, will describe when channel width is TDD and FDD frame structure during a length of 1/8Tb of 7MHz and CP.
Fig. 7 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention.
Bandwidth and the 1/8Tb of 7MHz is can be used for reference to 1,34 OFDM symbol of table.In the basic frame structure of 5MHz, 10MHz and 20MHz, the Class1 subframe including 6 symbols is used as basic subframe, and this illustrative embodiments proposes the frame structure using Class1 subframe (it includes 6 symbols) as much as possible.In the figure 7, a frame includes 6 subframes, and uses the Class1 subframe including 6 symbols as much as possible, can configure 30 symbols (6*5) and remain 4 symbols.In TDD structure, when staying next symbol for TTG, remain 3 symbols, so can configure the subframe including 3 symbols.It is miniature subframe (mini-subframe) by the subframe definition including 3 symbols.By 3 symbols, the structure of the physical layer (PHY) for the Class1 subframe including 6 symbols can be made a distinction, so, when configuring miniature subframe, it is possible to use a part for existing PHY structure.Alternatively, can configure, by the Class1 subframe including 6 symbols being combined with miniature subframe, type 4 subframe including 9 symbols.When a frame is configured with type 4 subframe, in addition to the frame structure 710 in Fig. 7, can configure according to frame structure 720,730 and 740.
In tdd mode, the first subframe is used as super-frame header (SFH), the most preferably, including first subframe that Class1 sub-frame configuration is this frame of 6 symbols.Thus, as it can be seen, the ratio of DL and UL available in tdd mode can include the frame 710,720,730 and 740 of 4 types, i.e. 2:4,3:3,4:2 and 5:1.
Wherein, last sub-frame configuration of DL is the miniature subframe (as mentioned above) including 3 symbols, and last symbol distributes to TTG.
Fig. 8 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention.
Compared with the illustrative embodiments of above-mentioned Fig. 7, when the ratio of DL and UL is 4:2 and 5:1, configure tdd frame based on type 3 subframe including 5 symbols.In this illustrative embodiments, when the ratio of DL and UL is 2:4 and 3:3, it is possible to use the structure that figure 7 illustrates and without modification.Thus, descriptions thereof will be omitted, and the situation that ratio is 4:2 and 5:1 of DL and UL will be described.
The tdd frame that ratio is 4:2 830 for DL and UL, the fact that be used for SFH in view of the first subframe in tdd mode, it it is basic subframe SF0 of Class1 including 6 symbols by the first sub-frame configuration, second subframe SF1 and the 3rd subframe SF2 are configured to include type 3 subframe of 5 symbols, and, 4th DL subframe SF3 includes the symbol for TTG, and result forms type 3 subframe substantially configured by 5 symbolic units.Thus, UL subframe SF4 and SF5 are configured to be respectively provided with the basic subframe of the Class1 of 6 symbols.
The tdd frame that ratio is 5:1 840 for DL and UL, it is also contemplated that the first subframe is the fact that for SFH in tdd mode, it it is basic subframe SF0 of Class1 including 6 symbols by the first sub-frame configuration, 3rd subframe SF1 and the 4th subframe SF2 are configured to include type 3 subframe of 5 symbols, and, 5th DL subframe SF3 includes the symbol for TTG, and result forms type 3 subframe substantially configured by 5 symbolic units.UL subframe SF5 is configured to the Class1 subframe with 6 symbols, by such structure, a frame is configured so that, and the quantity including the Class1 subframe of 6 symbols maximizes.
Fig. 9 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention.
In this illustrative embodiments, the Class1 subframe including 6 symbols is used as basic subframe, based on this basic subframe, a frame being configured so that, the quantity of Class1 subframe maximizes, and adds a miniature subframe to configure FDD frame.In the case of FDD frame, being different from tdd frame, FDD frame needs not serve as the gap of TTG/RTG, so, in addition to basic subframe and miniature subframe, and one symbol of distribution the most in the frame.
With reference to FDD frame 910 and a 2nd FDD frame 920, add a remaining symbol to miniature subframe SF3 and SF5, include miniature subframe SF3 and the SF5 of the extension of 4 symbols with configuration.These miniature subframes are not limited to situation about illustrating in the drawings, and are also not necessarily limited to its setting in frame.
Such as the embodiment of 930,940 and the 950 of FDD frame, in this frame, may be inserted into a symbol, and, can will include that the miniature sub-frame configuration of 3 symbols is at the end of this frame.In the configuration, by actively using the above-mentioned miniature subframe including 3 symbols, the structure of physical layer (PHY) can be utilized as much as possible.After a remaining symbol may be located at the second subframe or the 3rd subframe, the centre of this frame or may be located at the forefront of this frame, transmit control information (such as, the additional information of such as lead code and FCH) to utilize by symbol.
In other illustrative embodiments, miniature subframe can be combined with the Class1 subframe including 6 symbols, includes type 4 subframe of 9 symbols with configuration.When a frame is configured with type 4 subframe, subframe is type 4 subframe including 9 symbols, this is because in frame structure 930,940 and 950 be in fig .9 combined Class1 subframe SF4 and miniature subframe SF5.
Figure 10 is the figure of TDD and the FDD frame structure illustrating the another exemplary embodiment according to the present invention.
As shown in Figure 10, in this illustrative embodiments, in 34 symbols constituting a frame, 10 symbols are configured to include type 3 subframe of 5 symbols, and, remaining 24 symbols are configured to include the Class1 subframe of 6 symbolic units.Thus, type 3 subframe including 6 symbolic units is basic subframe unit, therefore includes in a frame by 4 type 3 subframes, and, it is configured with 2 and includes 5 symbolic unit type 3 subframes, thus obtain so that the maximized frame structure of the quantity of basic subframe.
In the case of configuration tdd frame 1001,1002,1003 and 1004, a symbol is distributed to TTG interval, thus, it is configured with 3 type 3 subframes consisting essentially of 5 symbolic units.Being similarly to following this frame structure: wherein, in the frequency band of 5MHz, 10MHz and 20MHz, CP length is 1/16Tb.Thus, while being configured with the Class1 subframe of maximum quantity, type 3 subframe is respectively allocated to DL and UL, and is further assigned to last subframe as TTG.
In the case of configuring FDD frame 1005 based on Class1 subframe, by adding a symbol compared with above-mentioned tdd frame 1001,1002,1003 and 1004, FDD frame 1005 includes 2 type 3 subframes and 4 Class1 subframes.As it can be seen, the type 3 subframe may be located at forefront or rear portion, but the present invention is not limited to this.
Figure 11 is the figure of TDD and the FDD frame structure illustrating the another exemplary embodiment according to the present invention.
In this illustrative embodiments, configure frame based on type 2 subframe including 7 symbolic units.
In 34 symbols constituting a frame, 4 subframes are configured to include type 2 subframe of 7 symbols, and a remaining subframe is configured to include the Class1 subframe of 6 symbols.In this respect because can utilize in tdd frame 1101,1102 and 1103 symbol as TTG, so, symbol of type 2 subframe is utilized as TTG, and corresponding subframe changes into Class1 subframe.Tdd frame 1101,1102 and 1103 is characterised by, a frame can configure the most two kinds of subframe, the such as frame structure in the frequency band of 5MHz, 10MHz and 20MHz, and it is possible to utilize existing physical layer (PHY) structure according to same way.It addition, the architectural feature that tdd frame has is, owing to a symbol is spaced with for TTG, so type 2 subframe can change into Class1 subframe to be transmitted.
The ratio of DL and UL considered in tdd frame 1101,1102 and 1103 is defined to 2:3,3:2 and 4:1, and, according to the size of unified SFH, basic subframe is positioned at forefront, and thus basic subframe can not be affected by the ratio of DL and UL.
It addition, when the ratio of DL and UL in tdd frame 1104 and 1105 is 3:2 and 4:1, the quantity of the symbol of UL can be adjusted according to the multiple of 6.For tradition is supported, this is highly desirable, thus available DL:UL ratio is 3:2 and 4:1.According to circumstances, it is contemplated that the position of SFH and configure tdd frame 1105, wherein, a subframe of DL is configured to include 6 symbols and the subframe of an independent entry.
Included type 2 subframe of 7 symbolic units by use, FDD frame 1110 can be configured.Preferably, it is the Class1 subframe including 6 symbols by the first sub-frame configuration, to use SFH design and the common denominator of different bandwidth (5MHz, 10MHz and 20MHz).But, the position of Class1 subframe is not limited to this, and can freely position in frame.
Figure 12 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention.
In this illustrative embodiments, configure frame based on type 3 subframe including 5 symbolic units.It is to say, in 34 symbols constituting a frame, 15 symbols are for Configuration Type 3 subframe, and 12 symbols are for 2 Class1 subframes of configuration, and other remaining 7 symbols are for Configuration Type 2 subframe.
Can utilize a symbol for TTG in tdd mode, so, and last subframe of the relevant DL in TTG interval can change into other subframe type.Such as, in the case of last subframe that type 2 subframe including 7 symbolic units is set to DL, owing to TTG is spaced, so type 2 subframe changes into Class1 subframe.In the case of last subframe that Class1 subframe is set to DL, Class1 subframe changes into type 3 subframe with 5 symbolic units.
Other situation relevant with frame configuration be with above-mentioned illustrative embodiments described in situation identical, thus detailed description thereof will be omitted.
Figure 13 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention.
In this illustrative embodiments, configure FDD frame based on type 3 subframe, such as situation about figure 12 illustrates.Compared with the tdd frame 1204 that figure 12 illustrates, a FDD frame 1310 includes an additional symbol, this is because it need not TTG, and, single Class1 subframe is changed into type 2 subframe by additional symbol.
Equally, compared with the tdd frame 840 that figure 8 illustrates, the 2nd FDD frame 1320 includes an additional symbol, this is because it need not TTG, and, single type 3 subframe is changed into Class1 subframe by additional symbol.Thus, FDD frame 1320 includes 4 Class1 subframes and 2 type 3 subframes altogether.The position of type 3 subframe is not limited to this, it is possible to freely change.
It addition, such as the 3rd FDD frame 1330, a symbol 1331 can be separated, and, other remaining symbol may be used for configuring 3 Class1 subframes and 3 type 3 subframes.In this case, the position of single symbol 1331 is not limited to this.
It addition, such as the 4th FDD frame 1340,2 symbols 1341 and 1343 can be separated, and such as another FDD frame 1350,3 symbols 1351,1353 and 1355 can be separated.In FDD frame 1330,1340 and 1350, the symbol 1331,1341,1343,1351,1353 and 1355 of separate configurations may be used for according to symbolic unit to transmit control information (such as, the additional information of such as lead code or FCH).
Explained below when channel width be tdd frame structure during a length of 1/16Tb of 7MHz and CP.
Figure 14 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention.Compared with the situation of 1/8Tb a length of with above-mentioned CP, a length of 1/16Tb of tdd frame structure C P.
With reference to table 1, when frame transmission channel bandwidth is 7MHz, 34 OFDM symbol can be used for the CP length of 1/8Tb, and 36 OFDM symbol can be used for the CP length of 1/16Tb.
In the basic frame structure of above-mentioned 5MHz, 10MHz and 20MHz transmission frequency band, Class1 sub-frame size including 6 symbolic units is used as basic subframe, and this illustrative embodiments also proposes such structure: include that the Class1 subframe of 6 symbolic units is used as basic subframe and uses Class1 subframe as much as possible in the case of supporting in view of tradition.
First, in the case of the tdd frame 1410 of a length of 1/8Tb of CP, when the ratio of DL and UL is 4:2, the fact that be used for SFH in view of the first subframe in tdd mode, it it is basic subframe SF0 of Class1 including 6 symbols by the first sub-frame configuration, second subframe SF1 and the 3rd subframe SF2 are configured to include type 3 subframe of 5 symbols, and, 4th DL subframe SF3 uses the structure of Class1 subframe, but the TTG symbol being assigned as between DL and UL by last symbol, the 4th subframe changes into type 3 subframe including 5 symbols as a result.UL subframe SF4 and SF5 are configured to include the Class1 subframe of 6 symbolic units.
Pass through said structure, basically a frame can be configured to have the basic subframe including 6 symbolic units as much as possible, therefore, the frame structure with other transmission frequency band can be configured in 7MHz transmission frequency band there is the frame of general character, can send by this 7MHz transmission frequency band and receive data.
In the case of the tdd frame 1420 of a length of 1/16Tb of CP, it is the Class1 subframe including 6 symbolic units by basic sub-frame configuration.Further, a frame is configured so that, and the quantity of basic subframe maximizes, thus, as it can be seen, in addition to last subframe SF3, be configured with the Class1 subframe including 6 symbolic units.In last subframe SF3 of DL, it is configured to type 3 subframe with 5 symbols for TTG distribution one symbol, so last subframe SF3.
Additionally, as mentioned above, the environment coexisted in view of tdd frame 1410 structure of a length of 1/8Tb of CP and tdd frame 1420 structure of a length of 1/16Tb of CP, in order to prevent interference, it is necessary to the border that tdd frame structure is designed such as having DL and UL between the tdd frame 1410 and 1420 of different CP length does not overlaps each other.
In the case of the tdd frame 1420 of a length of 1/16Tb of CP, in order to prevent the boundary of DL and UL of the tdd frame at a length of 1/8Tb of CP from generating interference, the OFDM symbol of 6*k-1 quantity is distributed to DL, and the OFDM symbol of 6*j quantity is distributed to UL.In the illustrated example, k is 4 and j to be 2.It addition, with reference to the comparison between two frames that figure 14 illustrates, it is noted that the border of DL and UL does not overlaps each other.
In the quantity based on the symbol distributed comparison between two frames 1410 and 1420, the quantity of the symbol in the tdd frame 1410 of 1/8Tb is the 34(21 symbols for DL, a symbol for TTG and 12 symbols for UL), the quantity of the symbol in the frame 1420 of 1/16Tb is 36(6*k-1=23 the symbol for DL simultaneously, a symbol for TTG and 6*j=12 the symbol for UL).Thus, when designing the tdd frame of 1/16Tb when tdd frame 710 based on 1/8Tb, compared with the quantity of the symbol of the tdd frame 1410 of 1/8Tb, remaining two OFDM symbol are distributed to include two subframes (SF1 and SF2) of 5 symbols.Then, a Frame 1420 includes 6 Class1 subframes with 6 symbols.It addition, as it has been described above, last symbol of DL distributes to TTG.
Figure 15 is the figure of the tdd frame structure illustrating the another exemplary embodiment according to the present invention.
Tdd frame 1510 about a length of 1/8Tb of CP, because whole symbol quantities is 34, so, when being configured with 4 Class1 subframes including 6 symbolic units and being configured with type 3 subframe that 2 include 5 symbolic units, may be configured such that the basic subframe including 6 symbolic units maximizes, therefore, it can that a frame is designed such as it and even there is in 7MHz transmission frequency band the general character of the frame structure with other transmission frequency band.The fact that in tdd mode, it is contemplated that the first subframe is used for SFH(super-frame header), it is preferred that it is Class1 subframe SF0 including 6 symbols by the first sub-frame configuration.Additionally, because the TTG symbol that last symbol of DL is assigned as between DL and UL, so, when last sub-frame configuration of DL is to include the Class1 subframe of 6 symbolic units and last symbol is distributed to TTG, Class1 subframe changes into type 3 subframe SF4 including 5 symbolic units.
In the case of the tdd frame 1520 of a length of 1/16Tb of CP, as described in reference Figure 14, it is the Class1 subframe with 6 symbolic units by basic sub-frame configuration, and a frame is configured so that, and the quantity of basic subframe maximizes.Thus, as it can be seen, in addition to last subframe SF4, be configured with the basic subframe including 6 symbols.In last subframe SF4 of DL, a symbol is distributed to TTG, so, last subframe SF4 is configured to type 3 subframe with 5 symbols.
Additionally, as mentioned above, the environment coexisted in view of tdd frame 1510 structure of a length of 1/8Tb of CP and tdd frame 1520 structure of a length of 1/16Tb of CP, in order to prevent interference, it is necessary to the border that tdd frame structure is designed such as having DL and UL between the tdd frame 1510 and 1520 of different CP length does not overlaps each other.
As shown in the figure, in the case of the tdd frame 1520 of a length of 1/16Tb of CP, in order to prevent the boundary of DL and UL of the tdd frame at a length of 1/8Tb of CP from generating interference, the OFDM symbol of 6*k-1 quantity is distributed to DL, and the OFDM symbol of 6*j quantity is distributed to UL.In the illustrated example, k is 5 and j to be 1.
Figure 16 is the figure of the FDD frame structure illustrating the another exemplary embodiment according to the present invention.
In this illustrative embodiments, FDD frame is designed such as it and has and the general character of TDD structure.
It is to say, in fdd, it is not necessary to TTG, such 36 symbols can be completely used for configuration and arrange 6 Class1 subframes including 6 symbols respectively.Thus, because making to maximize according to the basic subframe of 6 unit, so, the PHY structure and the MAC structure that limit in existing 5MHz, 10MHz and 20MHz can be reused, and system complexity can be reduced.
Figure 17 is the schematic block diagram of the equipment for sending and receive data according to one exemplary embodiment.
According to one exemplary embodiment, include transceiver 1701 and controller 1703 for the equipment sending and receiving data, transceiver 1701 is for sending and receive the data according to the configuration of frame form, and controller 1703 is for being controlled the transmission of the data of transceiver 1701 and reception.
Controller 1703 arranges the Frame sending and receiving data via up-link and downlink, and controls transceiver 1701 and sent by set Frame and receive data.Controller 1703 configures the above-mentioned frame with reference to Fig. 3 to Figure 16 according to FDD or tdd mode, to send and to receive data.Preferably, controller 1703 Frame arranged includes: include one or more Class1 subframe of 6 data symbols respectively；Include one or more type 2 subframe of 7 data symbols respectively；Include one or more type 3 subframe of 5 data symbols respectively；Include one or more type 4 subframe of 9 data symbols respectively.The bandwidth of transmission channel and systematic parameter with reference to table 1 form actual frame.The frame arranged by controller 1703 described above, so thereof will be omitted descriptions thereof.
Another exemplary embodiment according to the present invention, controller 1703 arranges one or more subframe of the data symbol including n quantity respectively, and controls transceiver 1701 and sent by set Frame and receive data.
It addition, when configuring Frame, this Frame is configured so that the quantity including the subframe of the symbolic unit of n quantity maximizes by controller 1703.
Preferably, Frame being configured to include, the basic subframe of 6 data symbols maximizes, and the bandwidth of transmission channel and systematic parameter with reference to table 1 forms actual frame.
Described the method according to the invention can be implemented as software, hardware or combinations thereof.Such as, the method according to the invention can be stored in storage medium (such as, the internal storage of terminal, flash memory, hard disk etc.), it is possible to is embodied as code or order in software program, this software program can be performed by processor (such as, the microprocessor in terminal).
Notwithstanding the present invention, it will be obvious that can be changed in many ways.It is not regarded as that these changes depart from the scope of the present invention, and, it is intended to will be apparent to one skilled in the art all these changes and be included within the scope of the claims.
Claims (6)
1. using the method that predetermined frame structure carrys out receiving and transmitting signal in a broadband wireless communication system, the method includes
Following steps:
By carrying out receiving and transmitting signal according to the frame of described predetermined frame structure,
Wherein, described frame has the channel width of 7MHz, and described frame is FDD frame, following of described frame
Ring prefix length corresponds to the 1/8 of significant character length,
Described frame includes 5 subframes, and these 5 subframes include 1 Class1 subframe and 4 type 2 subframes, such
Type 1 subframe includes that 6 OFDM OFDMA symbol, the type 2 subframe include 7 OFDMs
OFDMA symbol,
The type 1 subframe is positioned at the first subframe of described frame, and these 4 type 2 subframes are immediately preceding the type 1
After subframe.
Method the most according to claim 1, wherein, described frame supports 802.16e system and 802.16m system.
3. using the method that predetermined frame structure carrys out receiving and transmitting signal in a broadband wireless communication system, the method includes
Following steps:
By carrying out receiving and transmitting signal according to the frame of described predetermined frame structure,
Wherein, described frame has the channel width of 7MHz, and described frame is FDD frame, following of described frame
Ring prefix length corresponds to the 1/16 of significant character length,
Described frame includes 6 subframes, and these 6 subframes only include that Class1 subframe, the type 1 subframe are just including 6
Hand over frequency division multiple access OFDMA symbol.
Method the most according to claim 3, wherein, described frame supports 802.16e system and 802.16m system.
5. using the method that predetermined frame structure carrys out receiving and transmitting signal in a broadband wireless communication system, the method includes
Following steps:
By carrying out receiving and transmitting signal according to the frame of described predetermined frame structure,
Wherein, described frame has the channel width of 7MHz, and described frame is TDD frame, following of described frame
Ring prefix length corresponds to the 1/16 of significant character length,
Described frame includes lower between-line spacing, be positioned at this lower between-line spacing after transmission conversion interval TTG and be positioned at this transmission and turn
Change the upper between-line spacing after the TTG of interval, and receive conversion interval RTG and then last subframe of between-line spacing on this,
Described lower between-line spacing includes 4 subframes, and these 4 subframes include type 3 subframe and 3 Class1 subframes, should
Class1 subframe includes that 6 OFDM OFDMA symbol, the type 3 subframe include that 5 orthogonal frequencies are many
Location OFDMA symbol, the type 3 subframe after these 3 Class1 subframes, and
Described upper between-line spacing includes 2 subframes, and these 2 subframes only include that Class1 subframe, the type 1 subframe include
6 OFDM OFDMA symbol.
Method the most according to claim 5, wherein, described frame supports 802.16e system and 802.16m system.
Applications Claiming Priority (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14005508P | 2008-12-22 | 2008-12-22 | |
| US61/140,055 | 2008-12-22 | ||
| US14165908P | 2008-12-30 | 2008-12-30 | |
| US14166008P | 2008-12-30 | 2008-12-30 | |
| US61/141,660 | 2008-12-30 | ||
| US61/141,659 | 2008-12-30 | ||
| US14260009P | 2009-01-05 | 2009-01-05 | |
| US61/142,600 | 2009-01-05 | ||
| KR1020090078412A KR20100073967A (en) | 2008-12-22 | 2009-08-24 | Communication apparatus and method using a frame structure |
| KR10-2009-0078413 | 2009-08-24 | ||
| KR1020090078413A KR101658548B1 (en) | 2008-12-30 | 2009-08-24 | Communication apparatus and method using a frame structure |
| KR10-2009-0078412 | 2009-08-24 | ||
| CN200980151718.8A CN102257751B (en) | 2008-12-22 | 2009-12-21 | Method and apparatus for data transmission using a data frame |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980151718.8A Division CN102257751B (en) | 2008-12-22 | 2009-12-21 | Method and apparatus for data transmission using a data frame |
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| Publication Number | Publication Date |
|---|---|
| CN103501217A CN103501217A (en) | 2014-01-08 |
| CN103501217B true CN103501217B (en) | 2017-01-04 |
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| CN200980151718.8A Expired - Fee Related CN102257751B (en) | 2008-12-22 | 2009-12-21 | Method and apparatus for data transmission using a data frame |
| CN201310425017.7A Expired - Fee Related CN103501217B (en) | 2008-12-22 | 2009-12-21 | Use the data transmission method of Frame |
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| CN200980151718.8A Expired - Fee Related CN102257751B (en) | 2008-12-22 | 2009-12-21 | Method and apparatus for data transmission using a data frame |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10772092B2 (en) * | 2013-12-23 | 2020-09-08 | Qualcomm Incorporated | Mixed numerology OFDM design |
| WO2015137648A1 (en) * | 2014-03-13 | 2015-09-17 | 엘지전자 주식회사 | Method for transmitting and receiving signal for low latency in wireless communication system and apparatus therefor |
| CN106301696B (en) * | 2015-05-26 | 2019-08-06 | 电信科学技术研究院 | A kind of the bursty data sending, receiving method and device of ultralow time delay business |
| WO2017003185A1 (en) * | 2015-06-29 | 2017-01-05 | 주식회사 윌러스표준기술연구소 | Wireless communication method and wireless communication terminal for coexistence with legacy wireless communication terminal |
| US11924826B2 (en) * | 2015-12-10 | 2024-03-05 | Qualcomm Incorporated | Flexible transmission unit and acknowledgment feedback timeline for efficient low latency communication |
| KR102222314B1 (en) * | 2016-05-12 | 2021-03-04 | 후지쯔 가부시끼가이샤 | Base station, terminal, wireless communication system, and communication method |
| CN108365929B (en) * | 2017-01-26 | 2020-10-23 | 华为技术有限公司 | Method and device for transmitting data and method and device for transmitting information |
| CN109495235B (en) * | 2017-09-11 | 2020-08-14 | 华为技术有限公司 | Transmission method and transmission node |
| CN112688883B (en) * | 2019-10-18 | 2023-03-24 | 上海华为技术有限公司 | Sending end, receiving end and bandwidth switching method |
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| KR100691419B1 (en) * | 2001-02-09 | 2007-03-09 | 삼성전자주식회사 | Wireless communication apparatus, the method thereof and wireless communication system employing the same |
| CN1964222B (en) * | 2005-11-11 | 2014-11-05 | 华为技术有限公司 | A system and method for wireless transfer communication |
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2009
- 2009-12-21 CN CN200980151718.8A patent/CN102257751B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102257751A (en) | 2011-11-23 |
| CN103501217A (en) | 2014-01-08 |
| CN102257751B (en) | 2015-07-08 |
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