CN101527969B - Information interaction method - Google Patents
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- CN101527969B CN101527969B CN200810007324.2A CN200810007324A CN101527969B CN 101527969 B CN101527969 B CN 101527969B CN 200810007324 A CN200810007324 A CN 200810007324A CN 101527969 B CN101527969 B CN 101527969B
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Abstract
The invention discloses an information interaction method, which comprises the following steps that: a base station performs configuration on a radio frame used for performing information interaction with a terminal; and the base station performs information interaction with the terminal through the radio frame, wherein the frame length of the radio frame is fixed; the radio frame comprises a plurality of equilong wireless subframes; the terminal transmits information to the base station through one or more uplink subframes of the plurality of the wireless subframes; and the base station transmits information to the base station through one or more downlink subframes of the plurality of the wireless subframes. The method can reduce the service time delay of a wireless communication system and improve the system capacity of the wireless communication system.
Description
Technical field
The present invention relates to the communications field, relate more specifically to a kind of information interacting method.
Background technology
As a kind of multi-carrier transmission pattern, OFDM is by being converted to the data flow of high-speed transfer the data flow of one group of low-speed parallel transmission, system is reduced greatly to the susceptibility of multidiameter fading channel frequency selectivity, and the introducing of Cyclic Prefix, further strengthened again the anti-intersymbol interference of system (Inter-symbol Interference, abbreviation ISI) ability, in addition bandwidth availability ratio is high, realize the feature such as simple and make OFDM (Orthogonal Frequency Division Multiplex, be called for short OFDM) more and more wider in the application in radio communication basin, such as, WLAN (wireless local area network) (WLAN) system, micro-wave access to global intercommunication based on orthogonal frequency division multiplexing multiple access (WiMax) system, and the 4th generation mobile communcations system etc. be all the system based on OFDM technology.
Based on OFDM the 4th generation mobile communcations system according to duplex mode, be further divided into Frequency Division Duplexing (FDD) (FDD), time division duplex (TDD) and Half-Frequency Division Duplex (HFDD).Wherein, relative other duplex mode of TDD has following advantage:
Be conducive to effective utilization of frequency spectrum.TDD is owing to not needing to use paired frequency, thus various frequency resource under tdd mode, all can be utilized effectively, thereby can make full use of azygous frequency range, distribute frequency range simpler comparatively speaking.
Be more suitable in asymmetric traffic.In FDD system, what forward traffic channel and reverse traffic channel took is different frequency range, adopts guard band to disturb to eliminate between forward channel and backward channel.For TDD system, forward direction and backward channel work in same frequency range, and the information exchange of forward direction and backward channel is crossed time-multiplexed mode and transmitted.TDD is specially adapted to asymmetric uplink and downlink message transmission rate.When carrying out symmetrical service transmission, can select symmetrical position of conversion point; When carrying out non-symmetrical service transmission, can select asymmetrical position of conversion point.
One of 4G system very important feature be for example, to the support of multiattribute business (, higher peak rate, shorter time delay and higher spectrum efficiency).
Time delay in TDD system is different from FDD system, because FDD system has the symmetry of up-downgoing structure, and TDD system is owing to can not transmit and receive simultaneously, transmitting or reception will wait until that launch time or time of reception just can carry out, so TDD system compare FDD system identical system parameters as subframe lengths situation under, there is larger time delay.
TDD system adopts following two kinds of modes to reduce time delay conventionally:
Mode one: radio frames is divided into several less subframes, as shown in Figure 2 a, a radio frames is divided into 8 subframes, wherein 5 is descending sub frame, and 3 is sub-frame of uplink.In a radio frames, having a pair of switching point, is descending up switching point DUSP1 and upstream and downstream switching point UDSP1.
Mode two: radio frames is divided into several less subframes, as shown in Figure 2 b, a radio frames is divided into 8 subframes, wherein 4 is descending sub frame, and 4 is sub-frame of uplink.In radio frames, introduce a plurality of up-downgoing switching points, have two pairs of switching points.
Wherein, mode one is the mode that FDD system adopts.According to the computational methods of time delay, time delay is relevant with subframe lengths, so, reduce subframe lengths and just can reduce time delay.But the problem of this way is overhead issues.6 the OFDM symbols of each subframe of take are example, and each subframe control signal (being mainly used in this frame scheduling) takies 1 OFDM symbol, and the expense that control signal is brought is very considerable.In addition, due to the difference of up-downgoing ratio, can bring extra time delay.So TDD system, in order to reduce time delay, is brought the loss of power system capacity conventionally.For mode two, owing to having guard time between up-downgoing switching point, so falling in many switching points, the scheme of time delay also can bring the reduction of system spectral efficiency.
In addition, for mode one, when the up-downgoing ratio difference of TDD system, the propagation delay time of different subframes is also not quite similar, take Fig. 2 c as example, the processing time of supposing terminal and system is all 2 subframe lengths, and for downlink business, subframe 2,3,4 is starting at starting moment T02, T03, T04, through minimum treat after the time, whether terminal is constantly fed back and is correctly received at Tf1, and through minimum treat, after the time, base station is retransmitted constantly at T12, T13, T14.Like this, the re-transmission time of subframe 2,3,4 is a frame length.Equally, the re-transmission time of subframe 5 is also a frame length.But to subframe 6, because the processing time of terminal is inadequate, can not constantly feed back at Tf1 and Tf2, and to subframe 1, because the processing time of base station is inadequate, can not constantly retransmit at T11, so the re-transmission time will be greater than a frame length.And subframe 1 and 6 is discontinuous in time.The re-transmission time is an important component part of propagation delay time.
Summary of the invention
One or more problems in view of the above, the invention provides a kind of information interacting method, to reduce the service delay of wireless communication system, the power system capacity of raising wireless communication system.
According to the information interacting method of the embodiment of the present invention, comprise the following steps: base station is configured the radio frames for carrying out information interaction with terminal; Information interaction is carried out by radio frames and terminal in base station, wherein, the frame length of radio frames is fixed, radio frames comprises a plurality of isometric wireless sub-frames, terminal by the one or more sub-frame of uplink in a plurality of wireless sub-frames to base-station transmission information, base station by the one or more descending sub frames in a plurality of wireless sub-frames to terminal transmission information.
Wherein, radio frames also comprises one or more upstream and downstream conversion interval and one or more descending up conversion interval.Wireless sub-frame comprises a plurality of isometric OFDM symbols.
Wherein, when the service delay of terminal is less than the thresholding setting in advance, substantially descending wireless sub-frame is passed through to terminal transmission information in base station, and terminal is passed through substantially up wireless sub-frame to base-station transmission information, wherein, substantially descending wireless sub-frame only comprises a descending sub frame, and substantially up wireless sub-frame only comprises a sub-frame of uplink, and substantially descending wireless sub-frame and substantially up wireless sub-frame are referred to as basic wireless sub-frame.
Wherein, when the service delay of terminal is greater than the thresholding setting in advance, base station is by strengthening descending wireless sub-frame to terminal transmission information, and terminal is by strengthening up-link wireless subframe to base-station transmission information, wherein, strengthen descending wireless sub-frame and comprise one or more descending sub frames, strengthen up-link wireless subframe and comprise one or more sub-frame of uplink, strengthen descending wireless sub-frame and strengthen up-link wireless subframe being referred to as enhancing wireless sub-frame.
Wherein, basic wireless sub-frame and strengthen wireless sub-frame any one shared running time-frequency resource in the following ways within the time of a radio frames: time division multiplexing, frequency division multiplexing, time division multiplexing+frequency division multiplexing.
Wherein, base station, according to carry out the service conditions of one or more terminals of information interaction with it, is dynamically adjusted the number of the basic wireless sub-frame comprising in a radio frames and enhancing wireless sub-frame.
Wherein, independent scheduling, by add control information in each basic wireless sub-frame, is carried out to each basic wireless sub-frame in base station.One or more in the following manner of base station are indicated the control information position of each basic wireless sub-frame in radio frames: subframe bitmap mode, sequence of subframes mode, tree mode, fixed form.Wherein, information interaction is carried out by comprising superframe and the terminal of a plurality of radio frames in base station.
Wherein, control information is added by the fixed position in radio frames in base station, and a plurality of enhancing wireless sub-frames are carried out to centralized dispatching.One or more in the following manner of base station are indicated the scheduling situation that each is strengthened to wireless sub-frame: subframe bitmap mode, sequence of subframes mode, tree mode, fixed form.Logic subframe mode can also be passed through in base station, and the physical resource that remaining wireless sub-frame forms after basic wireless sub-frame is removed in indication in radio frames.
Wherein, information interaction is carried out by comprising superframe and the terminal of a plurality of radio frames in base station, in superframe the structure of each radio frames as the number of switching point can be identical, also can be different, superframe arranges superframe control signal in the original position of superframe, and superframe control signal content can comprise the configuration information of described each basic wireless sub-frame control information.
By the present invention, can reduce the service delay of wireless communication system, the power system capacity of raising wireless communication system.And the low time delay business in can adaptively modifying radio frames and the multiplexing relation of running time-frequency resource of other business, thereby can meet dynamically, adaptively the demand of user to low time delay business and the large throughput of system.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the flow chart of the information interacting method of the embodiment of the present invention;
Fig. 2 a to Fig. 2 c is according to the TDD OFDMA system wireless frame of the embodiment of the present invention and the schematic diagram of wireless sub-frame;
Fig. 3 is according to the frame structure schematic diagram of the employing TDM mode shared resource of the basic wireless sub-frame of the embodiment of the present invention and enhancing wireless sub-frame;
Fig. 4 is according to the frame structure schematic diagram of the employing FDM mode shared resource of the basic wireless sub-frame of the embodiment of the present invention and enhancing wireless sub-frame;
Fig. 5 is according to the frame structure schematic diagram of the employing FDM+TDM mode shared resource of the basic wireless sub-frame of the embodiment of the present invention and enhancing wireless sub-frame;
Fig. 6 is according to the control signal setting position schematic diagram of the basic wireless sub-frame of the embodiment of the present invention and enhancing wireless sub-frame;
Fig. 7 is superframe, basic wireless sub-frame and the control signal setting position schematic diagram that strengthens wireless sub-frame.
Embodiment
Below with reference to accompanying drawing, describe the specific embodiment of the present invention in detail.
Fig. 1 is according to the flow chart of the information interacting method of the embodiment of the present invention.As shown in Figure 1, this information interacting method comprises the following steps: S102, and base station is configured the radio frames for carrying out information interaction with terminal; S104, information interaction is carried out by radio frames and terminal in base station.
Wherein, in a TDD OFDM wireless system, with fixing frame length (radio frames), at identical frequency, realize transmitting and receiving of information, this frame length can be fixed as the value needing according to designing requirement.Wherein, a radio frames is divided into several isometric subframes, is called wireless sub-frame, and Fig. 2 a is a wireless sub-frame.A wireless sub-frame comprises several isometric OFDM symbols, wireless sub-frame (hereinafter to be referred as subframe) comprises descending sub frame and sub-frame of uplink, descending sub frame sends information for base station to user, as the subframe SFS1-SFS5 in Fig. 2 a, sub-frame of uplink sends information for user to base station, as the subframe SFS6-SFS8 in Fig. 2 a, subframe is the base unit of user assignment Radio Resource, and a user can distribute 1 to arrive several subframes for transmitting user data and control information.
Wherein, a radio frames also comprises one or several upstream and downstream conversion interval (DUSP in Fig. 2 a to Fig. 2 c) and descending up conversion interval (UDSP in Fig. 2 a to Fig. 2 c).At above-mentioned interval, base station and with not launching per family information, in order to prevent the interference between up-downgoing between different base station, user.
Wherein, wireless sub-frame can be divided into two classes, and a class is called basic wireless sub-frame, the another kind of enhancing wireless sub-frame that is called.Wherein, basic wireless sub-frame is comprised of a subframe, and strengthen wireless sub-frame, several continuous in time or discontinuous subframes, consists of.Basic wireless sub-frame is for user or the customer service of low time delay, is applicable to the little but focus wireless area that customer service density is high of radius of society.Strengthen wireless sub-frame for user or the customer service of high-throughput, be suitable for the wireless coverage of large distance.
Wherein, basic wireless sub-frame adopts each subframe independence scheduling mode to dispatch.The realization of independent scheduling mode notifies user's down dispatch information and ascending resource to allow information by the mode of control channel, comprises centralized and distributing pattern.Under Centralized Mode, a plurality of basic wireless sub-frames adopt a control channel, and this control channel is positioned at the fixed position of radio frames, as the frame head position of the several subframes in interval.And control channel is positioned at each descending basic wireless sub-frame under decentralized model.Strengthen wireless sub-frame and adopt each radio frames scheduling mode once, adopt a control channel, and this control channel is positioned at the fixed position of radio frames, as frame head position.
Wherein, basic wireless sub-frame and enhancing wireless sub-frame can adopt the mode of TDM to share the running time-frequency resource of a radio frames within the time of a radio frames.Basic wireless sub-frame and enhancing wireless sub-frame also can adopt the mode of FDM to share the running time-frequency resource of a radio frames within the time of a radio frames.Basic wireless sub-frame and enhancing wireless sub-frame can also adopt the mode of FDM+TDM to share the running time-frequency resource of a radio frames within the time of a radio frames.Wherein, basic wireless sub-frame and the ratio of enhancing wireless sub-frame within the time of a radio frames can be according to the dynamically adjustment such as customer service, i.e. adaptive modes.
Wherein, in the realization of independent scheduling mode, control channel indicating mode has multiplely, comprises subframe bitmap mode, sequence of subframes mode, number shape structure and fixed form.In the realization of centralized dispatching mode, control channel indicating mode has multiplely, comprises subframe bitmap mode, sequence of subframes mode, number shape structure and fixed form.
Wherein, under centralized dispatching pattern, subframe indicating mode further comprises that mode by logic subframe removes the physical resource that remaining subframe running time-frequency resource forms after basic subframe running time-frequency resource in representing radio frames, wherein logic comprises the modes such as mapping table to the mapping mode of physics, and the indicating mode of logic subframe can adopt shortening bitmap, the modes such as sub-tree represent, in conjunction with adopting implicit mapping table and shortening bitmap (or sub-tree) mode, can reduce control information expense, improve general efficiency frequently.
Wherein, a plurality of radio frames form superframe, the sub-frame of uplink of each radio frames, descending sub frame, up switching point, descending switching point in superframe, basic wireless sub-frame, enhancing wireless sub-frame, the design of control channel can be identical, can be not identical yet, adopt superframe can further reduce the expense of control channel.Superframe arranges superframe control signal in the original position of superframe, and superframe control signal content can comprise the configuration information of described each basic wireless sub-frame control information.
The basic wireless parameter of 802.16 system of take below based on TDD OFDMA is example, and establishing wireless superframe is 10ms (millisecond), is divided into the long radio frames of two 5ms.
The basic wireless sub-frame of hypothesis as shown in Figure 2 a and 2 b herein, a long radio frames of 5ms comprises 8 subframe SFS1 to SFS8, length is 616.92us (microsecond), each subframe comprises 6 OFDM symbols, each symbol lengths is 102.82us, wherein, Cyclic Prefix (CP) length is 11.42us.
While comprising a pair of up-downgoing switching point in the radio frames of 5ms (DUSP+UDSP), descending up conversion interval DUSP length is an OFDM symbol, and upstream and downstream conversion interval UDSP length is 64.64us, as shown in Figure 2 a.
While comprising two pairs of up-downgoing switching points in the radio frames of 5ms (DUSP+UDSP), descending up conversion interval DUSP1 and DUSP2 length are 1/2 OFDM symbol, and upstream and downstream conversion interval UDSP1 and UDSP2 length are 32.32us, as shown in Figure 2 b.
Basic wireless sub-frame with strengthen situation that wireless sub-frame shares running time-frequency resource in TDM mode as shown in Figure 3.8 wireless sub-frames are divided into 5 descending sub frame SFS1 to SFS5 and 3 sub-frame of uplink SFS6 to SFS8.In 5 descending sub frames, the 1st, 3 subframes are 2 basic downlink wireless subframes, and the 6th, 7 subframes are 2 basic wireless uplink subframes.And the subframe of removing beyond basic wireless sub-frame forms enhancing wireless sub-frame.As 2,4,5 subframes in figure form, strengthen descending wireless sub-frame, the 8th subframe forms enhancing up-link wireless subframe.
Basic wireless sub-frame with strengthen situation that wireless sub-frame shares running time-frequency resource in FDM mode as shown in Figure 4.Whole wireless bandwidth available band (being comprised of OFDM available subcarrier) is divided into two parts, 8 subframes in first form basic wireless sub-frame, in Fig. 4, the 1st, 2,5,6 subframes are 4 basic downlink wireless subframes, and the 3rd, 4,7,8 subframes are 4 basic wireless uplinks.In second portion frequency band, subframe forms enhancing wireless sub-frame.
Basic wireless sub-frame with strengthen situation that wireless sub-frame shares running time-frequency resource in FDM+TDM mode as shown in Figure 5.Whole wireless bandwidth available band (being comprised of OFDM available subcarrier) is divided into two parts, in 8 subframes of first, 1st, 3,5,7 form basic wireless sub-frame, in Fig. 5,1st, 5 subframes are 2 substantially descending wireless sub-frames, and the 3rd, 7 subframes are 2 substantially up wireless sub-frames.Residue subframe 2,4,6,8 and the interior subframe (1,2,3,4,5,6,7,8) of second portion frequency band that basic wireless sub-frame is removed by first form enhancing wireless sub-frame.
Basic wireless sub-frame and the control channel set-up mode that strengthens wireless sub-frame be take TDM mode to share running time-frequency resource are example, and all the other situations are similar.Fig. 6 is the schematic diagram of control channel under this situation, and each basic wireless sub-frame arranges control information, as the 3rd, 4,5 basic wireless sub-frames respectively arrange control information, in order to scheduling, is arranged in basic wireless sub-frame user's resource information separately.And each radio frames arranges the control information of enhancing wireless sub-frame, as the control signal that strengthens wireless sub-frame is set in first subframe position, in order to scheduling, be arranged in radio frames user's resource information, comprise the descending wireless sub-frame of enhancing that the 1st, 2,6 subframes form.
For different low time delay service-users or the different low time delay business of same user, the 3rd, 4 basic wireless sub-frames are supported two concurrent low time delay business (as VoIP or game service), if this business base station is in the 3rd basic wireless sub-frame notice (by being positioned at the control information of this subframe) and send data to user, user sends at the 7th basic wireless sub-frame the correctness information (ACK/NACK information) that receives, base station can be at the 3rd basic wireless sub-frame notice (by being positioned at the control information of this subframe) retransmission data of next radio frames, like this, can realize the re-transmission time of 5ms, meet low time delay user's needs, can find out, now dispatching base unit is a subframe lengths (616.92us), speed is fast.
For the not high user of delay requirement, each radio frames scheduling of user is (5ms) once, the running time-frequency resource that user can distribute is greater than 1 subframe lengths in time-domain, as SFS1+SFS2+SFS6, because the running time-frequency resource of primary distribution is large, can obtain large coding gain, simultaneously, comparatively speaking, the expense of control signal is also little.
Fig. 7 is the schematic diagram that adopts superframe structure.As shown in Figure 7, superframe is comprised of two radio frames, and superframe control signal is positioned at first wireless sub-frame of first radio frames.Whether the radio frames in superframe comprises the position that strengthens wireless sub-frame is represented by bitmap, as Bitmap_frame=[11] represent that first radio frames and the 2nd radio frames all arrange enhancing subframe control channel, the position of basic wireless sub-frame is represented by the bitmap strengthening in wireless sub-frame control channel, as the basic wireless sub-frame in second radio frames is shown Bitmap_basic_sub_frame=[1 1001100 by bitmap table], 1 represents the subframe number that comprises control signal.
Because each basic wireless sub-frame all comprises control signal, so the bitmap of basic wireless sub-frame has been indicated the control signal position of basic wireless sub-frame simultaneously.
It is as follows that the user of basic wireless sub-frame obtains allocation of radio resources mode, first the bitmap Bitmap_frame by wireless sub-frame determines the radio frames that includes basic wireless sub-frame, then by Bitmap_basic_sub_frame, determines the subframe position that reads control information.
It is as follows that enhancing wireless sub-frame user obtains allocation of radio resources mode, first by strengthening wireless sub-frame control signal, (position is in the fixed position of each radio frames, as front several OFDM symbols of first subframe) read resource control information, owing to strengthening wireless sub-frame (logic subframe), may be formed by discontinuous subframe, discontinuous subframe represents that mode represents with mapping table+Bitmap_enhanced_sub_frame (shortening bitmap), wherein mapping table represents to remove in radio frames the corresponding relation between the logic subframe that remaining subframe and Bitmap_enhanced_sub_frame represent after the basic wireless sub-frame being represented by Bitmap_basic_sub_frame, because Bitmap_basic_sub_fram is known, so, mapping table implies, need not any information indicate, and the bitmap lengths of Bitmap_enhanced_sub_frame can be less than the number of all subframes in radio frames, saved indication bit expense.As basi_ sub_frame=[1 100110 0] situation, Bitmap_enhanced_sub_frame=[n1 n2 n3 n4] represent, wherein n1 n2 n3 n4 corresponds respectively to the subframe that in basic_sub_frame, bit is 0, and 3,4,7,8.N=1 represents this sub-frame allocation resource, and n=0 represents not distribute.Owing to adopting, shorten 4 overhead bits of bitmap minimizing, so when number of users is larger, the good results are evident for saving resource.
In sum, the present invention is on the basis of the following problem of consideration, proposition: the contradiction of TDD Time Delay of Systems and spectrum efficiency; The differentiated demand of low time delay business and high-rate service (as BestEffort, real-time is not high) business; When TDD up-downgoing switching proportion is different, different subframes have different minimal propagation delay.By the present invention, can reduce the service delay of wireless communication system, the power system capacity of raising wireless communication system.And the low time delay business in can adaptively modifying radio frames and the multiplexing relation of running time-frequency resource of other business, thereby can meet dynamically, adaptively the demand of user to low time delay business and the large throughput of system.
The foregoing is only embodiments of the invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present invention.
Claims (17)
1. an information interacting method, is characterized in that, comprises the following steps:
Base station is configured the radio frames for carrying out information interaction with terminal;
Information interaction is carried out by described radio frames and described terminal in described base station;
Wherein, the frame length of described radio frames is fixed, described radio frames comprises a plurality of isometric wireless sub-frames, described terminal by the one or more sub-frame of uplink in described a plurality of wireless sub-frames to described base-station transmission information, described base station by the one or more descending sub frames in described a plurality of wireless sub-frames to described terminal transmission information, described wireless sub-frame comprises basic wireless sub-frame and strengthens wireless sub-frame, wherein, basic wireless sub-frame is comprised of a subframe, and strengthen wireless sub-frame by several continuous in time, or discontinuous subframe forms, basic wireless sub-frame adopts each subframe independence scheduling mode to dispatch, strengthening wireless sub-frame adopts each radio frames scheduling mode once to dispatch.
2. information interacting method according to claim 1, is characterized in that, described radio frames also comprises one or more upstream and downstream conversion interval and one or more descending up conversion interval.
3. information interacting method according to claim 2, is characterized in that, described wireless sub-frame comprises a plurality of isometric OFDM symbols.
4. information interacting method according to claim 3, it is characterized in that, when the service delay of described terminal is less than the thresholding setting in advance, substantially descending wireless sub-frame is passed through to described terminal transmission information in described base station, and described terminal is passed through substantially up wireless sub-frame to described base-station transmission information, wherein, described substantially descending wireless sub-frame only comprises a described descending sub frame, described substantially up wireless sub-frame only comprises a described sub-frame of uplink, and described substantially descending wireless sub-frame and described substantially up wireless sub-frame are referred to as described basic wireless sub-frame.
5. information interacting method according to claim 3, it is characterized in that, when the service delay of described terminal is greater than the thresholding setting in advance, described base station is by strengthening descending wireless sub-frame to described terminal transmission information, and described terminal is by strengthening up-link wireless subframe to described base-station transmission information, wherein, the descending wireless sub-frame of described enhancing comprises one or more described descending sub frames, described enhancing up-link wireless subframe comprises one or more described sub-frame of uplink, the descending wireless sub-frame of described enhancing and described enhancing up-link wireless subframe are referred to as described enhancing wireless sub-frame.
6. information interacting method according to claim 4, it is characterized in that described basic wireless sub-frame and strengthen wireless sub-frame any one shared running time-frequency resource in the following ways within the time of a described radio frames: time division multiplexing, frequency division multiplexing, time division multiplexing+frequency division multiplexing.
7. information interacting method according to claim 6, it is characterized in that, described base station, according to carry out the service conditions of one or more described terminals of information interaction with it, is dynamically adjusted the number of the described basic wireless sub-frame comprising in a described radio frames and described enhancing wireless sub-frame.
8. information interacting method according to claim 7, is characterized in that, independent scheduling, by basic wireless sub-frame, subframe control information is set described in each, is carried out to basic wireless sub-frame described in each in described base station.
9. information interacting method according to claim 8, it is characterized in that, one or more in the following manner of described base station are indicated the facilities of each the basic wireless sub-frame control information in described radio frames: subframe bitmap mode, sequence of subframes mode, tree mode, fixed form.
10. information interacting method according to claim 7, is characterized in that, described base station arranges radio frames control information by the fixed position in described radio frames, and a plurality of described enhancing wireless sub-frame in described radio frames is carried out to centralized dispatching.
11. information interacting methods according to claim 10, is characterized in that, described radio frames control information is also used to indicate the facilities of described basic wireless sub-frame control information.
12. information interacting methods according to claim 11, it is characterized in that, one or more in the following manner of described base station are indicated the scheduling situation that strengthens wireless sub-frame described in each in described radio frames: subframe bitmap mode, sequence of subframes mode, tree mode, fixed form.
13. information interacting method according to claim 11, is characterized in that, described base station is by logic subframe mode, indicates and in described radio frames, removes the physical resource that remaining described wireless sub-frame forms after described basic wireless sub-frame.
14. information interacting methods according to claim 9, is characterized in that, information interaction is carried out by comprising superframe and the described terminal of a plurality of described radio frames in described base station, and wherein, the structure of radio frames is identical or different described in each in described superframe.
15. information interacting methods according to claim 14, is characterized in that, described superframe arranges superframe control signal in the original position of described superframe, the configuration information that the content in described superframe control signal comprises basic wireless sub-frame control information described in each.
16. information interacting methods according to claim 13, is characterized in that, information interaction is carried out by comprising superframe and the described terminal of a plurality of described radio frames in described base station.
17. information interacting methods according to claim 5, it is characterized in that, basic wireless sub-frame and described enhancing wireless sub-frame be any one the shared running time-frequency resource in the following ways within the time of a described radio frames: time division multiplexing, frequency division multiplexing, time division multiplexing+frequency division multiplexing.
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| CN102263582B (en) * | 2011-07-21 | 2017-09-26 | 南京中兴软件有限责任公司 | Cooperative diversity system beamforming method and device |
| CN102891714B (en) * | 2011-07-22 | 2015-07-01 | 航通互联网信息服务有限责任公司 | Method and device for communication of FDD (frequency division duplex) relay system |
| CN104467948B (en) * | 2013-09-25 | 2018-07-20 | 华为技术有限公司 | A kind of communication means and device |
| CN106559183A (en) * | 2015-09-25 | 2017-04-05 | 普天信息技术有限公司 | Data transmission method, device and system |
| CN107294647B (en) * | 2016-04-01 | 2020-10-09 | 华为技术有限公司 | Downlink transmission method and device |
| CN108365879B (en) * | 2017-01-26 | 2021-07-16 | 华为技术有限公司 | Data sending method and device and data receiving method and device |
| CN110809319B (en) * | 2018-08-06 | 2023-10-31 | 黎光洁 | Data transmission method and data transmission system in Internet of things |
| CN113055917B (en) * | 2021-05-19 | 2022-11-01 | 浙江凡双科技有限公司 | Uplink data transmission method and system based on multi-antenna multiplexing |
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| CN1909533A (en) * | 2005-08-05 | 2007-02-07 | 中兴通讯股份有限公司 | Frame creating method based on crossing frequency division multiplexing in time-division duplex mode |
| CN101026446A (en) * | 2006-02-21 | 2007-08-29 | 华为技术有限公司 | Method for determining asynchronous silent period for sensing wireless regional area network system |
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| CN1909533A (en) * | 2005-08-05 | 2007-02-07 | 中兴通讯股份有限公司 | Frame creating method based on crossing frequency division multiplexing in time-division duplex mode |
| CN101026446A (en) * | 2006-02-21 | 2007-08-29 | 华为技术有限公司 | Method for determining asynchronous silent period for sensing wireless regional area network system |
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