CN102017559A - Method of transmitting control signals in wireless communication system - Google Patents
Method of transmitting control signals in wireless communication system Download PDFInfo
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- CN102017559A CN102017559A CN2009801154112A CN200980115411A CN102017559A CN 102017559 A CN102017559 A CN 102017559A CN 2009801154112 A CN2009801154112 A CN 2009801154112A CN 200980115411 A CN200980115411 A CN 200980115411A CN 102017559 A CN102017559 A CN 102017559A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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Abstract
A method of transmitting control signals in a wireless communication system is provided. The method comprises allocating at least one control signal in a control channel region comprising a plurality of tiles, each tile consisting of a plurality of consecutive subcarriers in a frequency domain on a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a time domain and transmitting the at least one control signal, wherein the number of the at least one control signal is determined based on the number of available sequences for the control channel region and the number of bit carried by each control signal.
Description
Technical field
The present invention relates to radio communication, especially, relate to the method that on control channel, transmits control signal.
Background technology
IEEE (IEEE) 802.16 standards are provided for supporting the technology and the agreement of broadband wireless access.Began to carry out standardization from 1999, passed through up to calendar year 2001 IEEE802.16-2001.IEEE 802.16-2001 is based on the physical layer of the single carrier wave (SC) that is called " wireless MAN-SC " (Wireless MAN-SC).IEEE 802.16a standard was passed through in 2003.In IEEE 802.16a standard, except " wireless MAN-SC ", " wireless MAN-OFDM " (Wireless MAN-OFDM) and " wireless MAN-OFDMA " (Wireless MAN-OFDMA) are further increased gives this physical layer.After finishing IEEE 802.16a standard, passed through the IEEE 802.16-2004 standard of revision in 2004.In order to correct the defective and the mistake of IEEE 802.16-2004 standard, finished IEEE 802.16-2004/Cor1 (hereinafter, being called IEEE 802.16e) with the form of " errata " in 2005.
Recently, as new technical standard based on IEEE 802.16e, the standardization well afoot of relevant IEEE 802.16m.IEEE 802.16m is the technical standard of developing recently, and it must be designed to support the IEEE 802.16e of previous design.That is to say that the technology of designed system (that is IEEE 802.16m) must be configured to by working in conjunction with routine techniques (that is IEEE 802.16e) effectively recently.
Can be considered as one of next generation wireless communication system with OFDM (OFDM) system that low complex degree reduces intersymbol interference.In OFDM, the data symbol of order input is converted into N parallel data symbol, is transmitted by carrying in N subcarrier of separation each then.Subcarrier keeps orthogonality in frequency dimension.The frequency selective fading that each orthogonal channel experience is separate, and the interval of the symbol that transmits is increased, so minimum is reduced in intersymbol interference.In using the system of OFDM as modulation scheme, OFDM (OFDMA) is the multiple access access scheme, wherein by providing in the available subcarrier some to realize that to a plurality of users multiple access inserts independently.In OFDMA, frequency resource (that is, subcarrier) is provided for each user, and each frequency resource do not overlap each other usually, because they are offered a plurality of users independently.Therefore, frequency resource is distributed to each user in mutually exclusive mode.
In the OFDMA system, can obtain a plurality of users' frequency diversity by frequency of utilization selectivity scheduling, and can be according to the arrangement that is used for subcarrier (permutation) rule allocation of subcarriers differently.In addition, use the spatial multiplex scheme of a plurality of antennas to can be used for improving the efficient of spatial domain.For the scheme of supporting that these are different, control signal must transmit between mobile radio station (MS) and base station (BS).The example of control signal comprises when MS reporting channel condition is given BS employed CQI (CQI), as for affirmative acknowledgement (ACK)/negative response (NACK) signal of the response of transfer of data and the precoding information that in a plurality of antenna systems, uses, aerial information or the like.
The variation of systemic-function causes the increase aspect the number of types of the control signal that will transmit.When must transmit the more control signal by means of finite wireless resources, the amount of radio resources of using for the user is reduced in so far.
Therefore, exist for can be by using finite wireless resources to transmit the needs of the method for various control signals effectively with effective means.
Summary of the invention
The invention provides a kind of method that transmits control signal effectively.According to one aspect of the present invention, a kind of method that in wireless communication system, transmits control signal, comprise: in comprising the control channel district of a plurality of (tile), distribute at least one control signal, each sheet is made up of a plurality of continuous subcarrier in frequency domain on a plurality of OFDMs (OFDM) symbol in time domain, with transmit at least one control signal, wherein the number of at least one control signal is based on the number of the available sequences that is used for the control channel district and definite by the bit number of each control signal carrying.
The number of available sequences can equal the number of a sheet sub-carriers.
Described sequence can be orthogonal.
Described control signal can be ACK/NACK (acknowledgement/non-acknowledgement) signal.
If the number by the bit of each control signal carrying is m, then described each control signal can be mapped as in 2m the sequence.
If the number by the bit of each control signal carrying is m, then the number of at least one control signal can equal the number/2m of available sequence.
Can in time domain, distribute a plurality of.
Can in frequency domain, distribute a plurality of.
Can in a plurality of, repeatedly distribute at least one control signal.
The number of sheet can be 3 in control channel.
Each sheet can be made up of 2 continuous subcarriers in frequency domain on 2 OFDM symbols in time domain.
According to one aspect of the present invention, a kind of method that in wireless communication system, transmits control signal, comprise: control signal is multiplexed with sheet, this sheet is made up of a plurality of continuous subcarrier in frequency domain on a plurality of OFDMs (OFDM) symbol in time domain, with this control signal of transmission, wherein in control signal multiplexing, by in sheet, using orthogonal intersection to come the spread spectrum control signal, and determine the bit number of spreading code based on the ratio between the sum of the number of the control signal that transmits on this sheet and the subcarrier of this sheet of formation.
The number of the bit of spreading code can be identical with the number of spreading code.
The number of control signal that will be multiplexing can depend on the number of the bit of spreading code.
Spreading code can be from (CAZAC) the sequence and obtaining of Hadamard (hadamard) sign indicating number, discrete Fourier transform (DFT) sequence, walsh code, Zadoff-Chu (ZC) sequence and permanent envelope zero auto-correlation (constant amplitude zero auto-correlation).
Beneficial effect
Owing to can dispose the control channel district in every way, so can transmit control signal adaptively.In addition, can need not this control signal of channel estimating ground configuration.
Description of drawings
Fig. 1 illustrates wireless communication system.
Fig. 2 illustrates the example of the frame structure of classification.
Fig. 3 illustrates the multiplexing example that advances the method in a control channel district of a plurality of control signals.
Fig. 4 illustrates according to one embodiment of the invention the multiplexing schematic diagram that advances the method in control channel district of control signal.
Fig. 5 illustrates according to another embodiment of the present invention the multiplexing schematic diagram that advances the method in control channel district of control signal.
Fig. 6 illustrates according to another embodiment of the present invention the multiplexing schematic diagram that advances the method in control channel district of control signal.
Embodiment
Fig. 1 illustrates wireless communication system.This wireless communication system can be adopted widely to provide such as the various communication services of voice, grouped data or the like.
With reference to figure 1, this wireless communication system comprises at least one mobile radio station (MS) 10 and base station (BS) 20.MS 10 can be fixing or movably, and can be called as other term, such as subscriber equipment (UE), user terminal (UT), subscriber station (SS), wireless device or the like.The fixed station that BS 20 normally communicates by letter with MS 10, and can be called as other term, such as Node B, base-station transceiver system (BTS), access point or the like.In the coverage of BS 20, there are one or more sub-districts.
Down link (DL) expression is from the communication link of BS 20 to MS 10, and up link (UL) expression is from the communication link of MS 10 to BS 20.In DL, transmitter can be the part of BS 20, and receiver can be the part of MS 10.In UL, transmitter can be the part of MS 10, and receiver can be the part of BS 20.
This wireless communication system can be based on the system of OFDM (OFDM)/OFDM (OFDMA).OFDM uses a plurality of orthogonal sub-carriers.In addition, OFDM uses the orthogonality between inverse fast Fourier transform (IFFT) and the fast Fourier transform (FFT).Transmitter transmits data by carrying out IFFT.Receiver recovers initial data by the signal that receives is carried out FFT.Transmitter uses IFFT to merge a plurality of subcarriers, and receiver uses FFT to separate a plurality of subcarriers.
Fig. 2 illustrates the example of the frame structure of classification.Frame is the data sequence of using according to physical specification in fixed duration.
With reference to figure 2, frame level (frame hierarchy) is made up of superframe, radio frames (perhaps frame) and subframe.Superframe comprises one or more radio frames.Radio frames comprises one or more subframes.Superframe comprises one or more controlled areas based on superframe.Hereinafter, the controlled area based on superframe is called as the superframe head.The superframe head can be assigned to first frame in a plurality of frames that constitute this superframe.Common Control Channel can be assigned to the superframe head.Common Control Channel is used to transmit the information relevant with the radio frames that constitutes this superframe, perhaps can be by the control information (for example, system information) of the public use of all MS.System information is the necessary information that executive communication must be known between MS and BS.BS is transfer system information periodically.Can per 20 to 40 milliseconds (ms) transmit this system information periodically.Can determine the size of superframe by the taking into account system transmission of Information cycle.Though the size of each superframe is 20ms in Fig. 2, this only is for the purpose of demonstrating, so the present invention is not subject to this.
When using the OFDMA parameter of table 1 illustrated below, a radio frames is made up of 8 subframes.A subframe can be assigned to UL transmission or DL transmission.The subframe that has following three types: 1) the Class1 subframe of forming by 6 OFDM symbols; 2) type 2 subframes of forming by 5 OFDM symbols; With 3) type 3 subframes formed by 7 OFDM symbols.
Table 1
Though in Fig. 2 illustrated a radio frames have the size of 5ms, the present invention is not subject to this.This radio frames goes for time division duplex (TDD) scheme and Frequency Division Duplexing (FDD) (FDD) scheme.In the TDD scheme, when dividing UL transmission and DL transmission in time domain when, the full range band is used to UL transmission and DL transmission.In the FDD scheme, when occupying different frequency bands, side by side realize UL transmission and DL transmission.That radio frames can comprise is leading, frame control head portion (FCH), DL-MAP, UL-MAP, burst region (burst region) or the like.Between BS and MS, use leading to be used for initial synchronisation, Cell searching and frequency shift (FS) and channel estimating.FCH comprises and the length of DL-MAP message and the relevant information of encoding scheme of DL-MAP.DL-MAP is the zone that is used to transmit DL-MAP message.DL-MAP message limits the access to the DL channel.This means that DL-MAP message limits indication of DL channel and/or control information.UL-MAP is the zone that is used to transmit UL-MAP message.UL-MAP message limits the access to the UL channel.This means that UL-MAP message limits indication of UL channel and/or control information.
Radio Resource is limited, and therefore, if a large amount of Radio Resources is used to transmit control signal, the Radio Resource that then is used for transfer of data is not enough.Therefore, exist further transmitting the needs of the method for control signal effectively.
Fig. 3 illustrates the multiplexing example that advances the method in a control channel district of a plurality of control signals.
With reference to figure 3, the control channel district can be arranged in the zone that radio frame is used for the UL transmission.A control channel district comprises at least one sheet.Can in a control channel district, arrange a plurality of along time shaft, frequency axis or time/frequency axis continuously or discretely.
Though shown in Figure 3 form that has such as time * frequency=6*6, and control channel district of three sheets formations, the present invention is not subject to this.That is to say that a sheet can have different forms, such as, " time * frequency=3*4,3*3,4*3,6*4,3*6,6*2,2*6 or the like ".
In addition, though it is shown in Figure 3, by using code division multiplexing (CDM) scheme (wherein orthogonal intersection multiply by each control signal) to be entered a control channel district with a plurality of control signals are multiplexing, but also can come multiplexing this control signal by using Time Division Multiplexing scheme or frequency division multiplexing (FDM) scheme.
By this way, can avoid waste of radio resources by a plurality of control signals are distributed to the control channel district.Herein, a plurality of control signals mean a plurality of control signals that are intended to by a MS transmission, perhaps are intended to a plurality of control signals that transmitted by a plurality of MS.That is to say, a control channel district can be assigned to a plurality of MS, into control channel district so that the control signal of a plurality of MS is re-used, perhaps a control channel district can be assigned to a MS, into control channel district so that a plurality of control signals of this MS are re-used.
Hereinafter, will describe according to the CDM spread spectrum scheme the multiplexing method of entering the control channel district of control signal.In the CDM spread spectrum scheme, control signal is passed through to use orthogonal intersection and spread spectrum, and is carried on sheet then.Spreading code is this control signal of spread spectrum in time domain or frequency domain.Spreading code can be an orthogonal code, such as Hadamard code, discrete Fourier transform (DFT) sequence, walsh code, Zadoff-Chu (ZC) sequence, permanent envelope zero auto-correlation (CAZAC) sequence or the like.
The ZC sequence is in the CAZAC sequence, and can be by 1 expression of following formula.
[formula 1]
Herein, k the element that c (k) expression has the ZC sequence of index M, and N represents the length of ZC sequence.Index M is the natural number that is less than or equal to N, and M and N are relatively prime each other numbers here.Can discern each MS by the ZC sequence that use has different cyclic shift value.That is to say, can discern a plurality of control signals by using different cyclic shift value.The number of available cyclic shift value can depend on channel delay spread and change.This only is for the purpose of demonstrating, and therefore, can also use other sequence with fabulous correlation.
Herein, this control signal is to send BS to so that the signal of the scheduling of being carried out by BS by MS.The example of control signal comprises when MS reporting channel condition is given BS employed CQI (CQI), as affirmative acknowledgement (ACK)/negative response (NACK) signal for the response of transfer of data, precoding matrix indicators (PMI) (it is the precoding information that uses in multiaerial system), order designator (RI) or the like.But the present invention is not limited to this.The control information of forming by one or more bits stand coding and modulation with produce control signal Sk (k=0,1 ..., K).
Fig. 4 illustrates according to one embodiment of the invention the multiplexing schematic diagram that advances the method in control channel district of control signal.
With reference to figure 4, suppose that a control signal is dispensed in the sheet.Though this sheet has the form of " time * frequency=6*6 ", the present invention is not subject to this.For example, this sheet can have the form of " time * frequency=3*6,6*1 or 1*6 ".
If enter a control channel district according to the CDM scheme with a plurality of control signals are multiplexing, this control signal can be by spread spectrum can be carried on sheet then by using orthogonal intersection.
If the number of the control signal of distributing in a sheet is S, and the number that constitutes the subcarrier of this sheet is N, and then each control signal can be by spread spectrum in N/S subcarrier.That is to say that the maximum number bits of spreading code is N/S, therefore, N/S control signal can be re-used.In Fig. 4, the number of the control signal of distributing in a sheet is 1, and the number that constitutes the subcarrier of this sheet is 36.Therefore, this control signal is by spread spectrum in 36 subcarriers.As shown in Figure 4, this control signal can be by spread spectrum sequentially on the subcarrier direction, and after this can on the adjacent time shaft on the subcarrier direction spread spectrum.With opposite mode also is admissible.Alternatively, can come multiplexing 36 control signals by using 36 spreading codes (that is 36 bits).
In Fig. 4, owing to do not send reference signal (perhaps pilot tone), thus do not carry out coherent detection, therefore, the channel estimating of stopping using.But, because each control signal is used orthogonal intersection, so can carry out incoherent detection.Coherent detection is in the method by detection signal after using pilot tone or reference signal execution channel estimating.Incoherent detection is to need not to carry out channel estimating and the method for detection signal.In the time of demultiplex control signal as shown in Figure 4, can transmit this control signal effectively by using finite wireless resources.Can be by distribution diagram 4 one or more and repeatedly transmit identical control signal, therefore improve diversity.
Fig. 5 illustrates according to another embodiment of the present invention the multiplexing schematic diagram that advances the method in control channel district of control signal.
Be dispensed in the sheet with reference to 5, two control signals of figure.Though this sheet has the form of " time * frequency=6*6 ", the present invention is not subject to this.For example, this sheet can have the form of " time * frequency=3*6,2*6 or 6*2 ".
In Fig. 5, the number of the control signal of distributing in a sheet is 2, and the number that constitutes the subcarrier of this sheet is 36.Therefore, each control signal is by spread spectrum in the individual subcarrier in 18 (that is, 36/2).As shown in Figure 5, each control signal can be by spread spectrum sequentially on the subcarrier direction, and after this can on the adjacent time shaft on the subcarrier direction spread spectrum.In addition, if the number of the control signal of distributing in a sheet is 2, then the spread spectrum of a control signal can be from such subcarrier, that is, this subcarrier is close to the subcarrier that the spread spectrum of another control signal finishes thereon.Can come multiplexing 18 control signals by using 18 spreading codes (that is 18 bits).Herein, identical spreading code is used to two control signals.
In Fig. 5, because by using multiplexing each control signal of orthogonal intersection, so can carry out incoherent detection.By one or more of distribution diagram 5, improved the diversity of control signal.
Herein, can in a sheet, transmit a plurality of (that is, three or more) control signal.Even transmit a plurality of control signals, also can be shown in the method for Fig. 4 and Fig. 5 demultiplex control signal.For example, if transmit four control signals in a sheet, then each control signal is by spread spectrum in the individual subcarrier in 9 (that is, 36/4).In addition, can come multiplexing 9 control signals by using 9 spreading codes (that is 9 bits).The control signal of distributing in a sheet is many more, and spread spectrum is narrow more at interval.
Fig. 6 illustrates according to another embodiment of the present invention the multiplexing schematic diagram that advances the method in control channel district of control signal.
With reference to figure 6, three sheets of form with " time * frequency=2*6 " are by continuously or discretely along time shaft or frequency axis arrangement, to constitute a control channel district.But the present invention is not limited to this.That is to say that a sheet can have different forms, such as " time * frequency=3*6,6*2,6*6 or the like ", and can arrange three sheets continuously or discretely, to constitute a control channel district along time shaft or frequency axis.
In Fig. 6, the number of the control signal of distributing in a sheet is 1, and the number that constitutes the subcarrier of this sheet is 12.Therefore, this control signal is passed through to use orthogonal intersection and spread spectrum in the individual subcarrier of 12 (that is, 12/1), and repeats this in 3 sheets (that is, i, j and k).As shown in Figure 6, each control signal can be by spread spectrum sequentially on the subcarrier direction, and after this can on the adjacent time shaft on the subcarrier direction spread spectrum.In addition, each control signal can be by spread spectrum sequentially on time-axis direction, and spread spectrum on adjacent subcarrier direction after this.Can advance a sheet with 12 control signals are multiplexing by using 12 orthogonal intersections (that is 12 bits).
In Fig. 6, because by using multiplexing each control signal of orthogonal intersection, so can carry out incoherent detection.Because control signal is repeatedly distributed to a plurality of, so the diversity of this control signal is enhanced.
Hereinafter, will describe according to one embodiment of the invention by using the CDM sequence solution with the multiplexing method of entering the control channel district of control signal.
At first, produce L orthogonal sequence, wherein the number of the bit of orthogonal sequence equals to constitute the total L of the subcarrier of all included in control channel district sheets.For example, if a control channel district comprises three sheets, and each sheet has the form of " time * frequency=6*6 ", and the sum that then constitutes the subcarrier in this control channel district is 108.Therefore, can produce 108 orthogonal sequences.Next, orthogonal sequence (abbreviating hereinafter, " sequence " as) is assigned to control signal.A control signal can be assigned to each sequence.
Table 2 illustrates the example of control signal being distributed to sequence below.
Table 2
In above table 2, suppose that MS 1 transmits two control signals, MS 2 transmits a control signal, and MS 3 transmits two control signals.Therefore, the control signal that is transmitted by MS 1 can be assigned to sequence 1 and sequence 2, and the control signal that is transmitted by MS 2 can be assigned to sequence 3, and the control signal that is transmitted by MS 3 can be assigned to sequence 4 and sequence 5.
Table 3 illustrates another example of control signal being distributed to sequence below.
Table 3
In above table 3, suppose in a control channel district, to transmit two ACK/NACK control signals according to the CDM sequence solution.Need two sequences so that from an ACK/NACK control signal, distinguish ACK and NACK.Therefore, first control signal can use sequence 1 to be used for the ACK transmission, and can use sequence 2 to be used for the NACK transmission.In addition, second control signal can use sequence 2 to be used for the ACK transmission, and can use sequence 4 to be used for the NACK transmission.As mentioned above, if in a control channel district, produce L sequence, then can be in the control channel district multiplexing and L/2 ACK/NACK control signal of transmission.
The method of the ACK/NACK control signal of allocation table 3 can also be applicable to the transmission of other control signal.That is to say, because the ACK/NACK control signal has the length of 1 bit, so need 21 sequences.Thereby, if control signal has the length of m bit, then need 2m sequence.Therefore, have three control signals of m bit length, then need 3*2m sequence if in a control channel district, transmit.
Be used to distribute the sequence of control signal to be not limited to orthogonal sequence.That is to say, can produce pseudo-orthogonal sequence, and use it for the distribution control signal.For example, pseudo-orthogonal sequence is characterised in that sequence is not entirely orthogonal, but the sequence in each sheet has orthogonality.
When being used to according to one embodiment of the invention CDM sequence solution distribute control signal in the control channel district, channel estimating is optional.That is to say, owing to do not transmit pilot tone or reference signal, thus can not carry out coherent detection, such as the channel estimating between BS and the MS.But, because control signal is used orthogonal sequence, so can carry out incoherent detection.
The present invention can realize by hardware, software or its combination.Hardware can realize that wherein this application-specific integrated circuit (ASIC) is designed to carry out above-described function by application-specific integrated circuit (ASIC) (ASIC), Digital Signal Processing (DSP), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microprocessor, other electronic unit or its any combination.Software can be realized by the matrix that is used to carry out above function.Software can be stored in the memory cell, and is carried out by processor.It is well-known various device to those skilled in the art that memory cell or processor can adopt.
For illustrate and describe for the purpose of, the aforementioned description of the preferred embodiments of the present invention is provided.And be not intended to be exhaustive or to limit the invention to disclosed concrete form, and be possible according to above instruction many modifications and variations, perhaps can be obtained from the practice of the present invention these modifications and variations.Be intended to limit scope of the present invention by claims and equivalent thereof.
Claims (15)
1. method that in wireless communication system, transmits control signal, this method comprises:
Distribute at least one control signal in comprising a plurality of control channel district, each sheet is made up of a plurality of continuous subcarrier in frequency domain on a plurality of OFDMs (OFDM) symbol in time domain; With
Transmit described at least one control signal,
The number of wherein said at least one control signal is based on the number of the available sequences that is used for the control channel district and definite by the bit number of each control signal carrying.
2. according to the process of claim 1 wherein that the number of available sequences equals the number of a sheet sub-carriers.
3. according to the process of claim 1 wherein that described sequence is orthogonal.
4. according to the process of claim 1 wherein that described control signal is ACK/NACK (acknowledgement/non-acknowledgement) signal.
5. according to the process of claim 1 wherein, if the bit number that is carried by each control signal is m, then described each control signal is mapped as in 2m the sequence.
6. according to the process of claim 1 wherein, if the bit number that is carried by each control signal is m, then the number of described at least one control signal equals the number/2m of described available sequences.
7. in time domain, distribute described a plurality of according to the process of claim 1 wherein.
8. in frequency domain, distribute described a plurality of according to the process of claim 1 wherein.
9. in described a plurality of, repeatedly distribute described at least one control signal according to the process of claim 1 wherein.
10. according to the process of claim 1 wherein that the number of the sheet in control channel is 3.
11. according to the process of claim 1 wherein that in time domain each sheet is made up of 2 continuous subcarriers in frequency domain on 2 OFDM symbols.
12. a method that transmits control signal in wireless communication system, this method comprises:
Control signal is multiplexed with sheet, in time domain, forms by a plurality of continuous subcarrier in frequency domain at the above sheet of a plurality of OFDMs (OFDM) symbol; With
Transmit described control signal,
Wherein in described control signal multiplexing, by in described, using orthogonal intersection to come the described control signal of spread spectrum, and determine the bit number of described spreading code based on the ratio between the sum of the described number of going up the control signal that transmits and the subcarrier of described of formation.
13. according to the method for claim 12, the bit number of wherein said spreading code is identical with the number of described spreading code.
14. according to the method for claim 12, wherein the number of the control signal that will be re-used depends on the bit number of described spreading code.
15. according to the method for claim 12, wherein said spreading code is an acquisition from Hadamard code, discrete Fourier transform (DFT) sequence, walsh code, Zadoff-Chu (ZC) sequence and permanent envelope zero auto-correlation (CAZAC) sequence.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5978808P | 2008-06-08 | 2008-06-08 | |
| US61/059,788 | 2008-06-08 | ||
| KR1020080091136A KR101230759B1 (en) | 2008-06-08 | 2008-09-17 | A method of transmitting control signals in a wireless communication system |
| KR10-2008-0091136 | 2008-09-17 | ||
| PCT/KR2009/002673 WO2010002104A2 (en) | 2008-06-08 | 2009-05-21 | Method of transmitting control signals in wireless communication system |
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| CN102017559A true CN102017559A (en) | 2011-04-13 |
| CN102017559B CN102017559B (en) | 2013-11-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102264136A (en) * | 2011-08-08 | 2011-11-30 | 中兴通讯股份有限公司 | Method and device for controlling configuration of channel resources |
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| EP2341656B1 (en) | 2009-12-29 | 2019-06-05 | Acer Incorporated | Resource allocation method, resource indication method and mobile station using the same |
| US20220416983A1 (en) * | 2019-10-02 | 2022-12-29 | Lg Electronics Inc. | Harq operations at phy layer level |
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| KR100876773B1 (en) * | 2006-11-17 | 2009-01-07 | 삼성전자주식회사 | Method and apparatus for trnasmitting/receiving a data in orthogonal frequency division multiple access |
| KR101407045B1 (en) * | 2007-10-26 | 2014-06-12 | 삼성전자주식회사 | Pilot Design Method, Recording Medium and Transmission Apparatus |
| KR101541910B1 (en) * | 2007-11-29 | 2015-08-04 | 엘지전자 주식회사 | Method for transmitting ACK/NACK signal in wireless communication system |
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2009
- 2009-05-21 CN CN2009801154112A patent/CN102017559B/en not_active Expired - Fee Related
- 2009-05-21 MY MYPI2010004821A patent/MY153284A/en unknown
- 2009-05-26 TW TW098117519A patent/TWI442748B/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264136A (en) * | 2011-08-08 | 2011-11-30 | 中兴通讯股份有限公司 | Method and device for controlling configuration of channel resources |
| CN102264136B (en) * | 2011-08-08 | 2017-02-15 | 中兴通讯股份有限公司 | Method and device for controlling configuration of channel resources |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102017559B (en) | 2013-11-06 |
| TWI442748B (en) | 2014-06-21 |
| KR20090127387A (en) | 2009-12-11 |
| KR101230759B1 (en) | 2013-02-06 |
| TW201021495A (en) | 2010-06-01 |
| MY153284A (en) | 2015-01-29 |
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