WO2011082681A1 - 资源映射、码分复用方法及装置 - Google Patents
资源映射、码分复用方法及装置 Download PDFInfo
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- WO2011082681A1 WO2011082681A1 PCT/CN2011/070082 CN2011070082W WO2011082681A1 WO 2011082681 A1 WO2011082681 A1 WO 2011082681A1 CN 2011070082 W CN2011070082 W CN 2011070082W WO 2011082681 A1 WO2011082681 A1 WO 2011082681A1
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- Prior art keywords
- pilot
- mapping
- different codeword
- codeword sequences
- mapping scheme
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- 238000013507 mapping Methods 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000011159 matrix material Substances 0.000 claims abstract description 44
- 239000013598 vector Substances 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000013461 design Methods 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000013468 resource allocation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/16—Code allocation
- H04J13/18—Allocation of orthogonal codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
- H04L27/262—Reduction thereof by selection of pilot symbols
-
- 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
-
- 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
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
-
- 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
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0073—Allocation arrangements that take into account other cell interferences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0003—Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
Definitions
- the present invention relates to the field of communications, and in particular, to a resource mapping, code division multiplexing method and apparatus.
- LTE Long Term Evolution
- a transmitting end provides a pilot symbol to a receiving end, and a receiving end user equipment can obtain a channel estimation value required for user data demodulation according to the received pilot symbol.
- resource mapping is needed to determine the correspondence between the spatial layer number of the transmitted pilot symbols, the subcarriers where the pilot symbols are located, and the codewords used by the pilot symbols.
- codewords in resource mapping there are a variety of design options.
- each cell adopts the same mapping scheme.
- the same codeword sequence is used on the subcarriers where the pilot symbols are located.
- a resource mapping method is provided, where the method includes:
- a resource mapping device is also provided, the device comprising:
- a storage module configured to store at least two mapping schemes, where the mapping scheme is a spatial layer number for transmitting pilot symbols, Corresponding relationship between the codeword used by the pilot symbol and the subcarrier where the pilot symbol is located;
- a selection module configured to select one mapping scheme in at least two mapping schemes stored by the storage module, and map the pilot symbol with the strongest transmit power and the at least one neighbor cell selection corresponding to the selected mapping scheme
- the pilot symbols corresponding to the scheme having the strongest transmit power are staggered in frequency and/or time;
- mapping module configured to perform resource mapping according to a mapping scheme selected by the selection module.
- a code division multiplexing method comprising:
- the pilot symbols of the respective spatial layers are multiplexed according to the codeword sequence corresponding to each pilot subcarrier on the respective pilot subcarriers.
- a code division multiplexing device comprising:
- An obtaining module configured to perform vector switching on the selected orthogonal matrix, to obtain a plurality of different codeword sequences
- a determining module configured to determine a plurality of different codeword sequences obtained by the acquiring module and each pilot subcarrier Correspondence relationship
- a multiplexing module configured to multiplex the pilot symbols of each spatial layer according to the codeword sequence corresponding to the respective pilot subcarriers on the respective pilot subcarriers.
- the resource mapping is implemented by selecting one mapping scheme in each of the at least two mapping schemes by the respective cells, where the pilot symbol with the strongest transmit power corresponding to the selected mapping scheme corresponds to the mapping scheme selected by at least one neighboring cell.
- the pilot symbols with the strongest transmit power are staggered in frequency and/or time, which can effectively reduce the interference of the pilot signals of the cell boundary users.
- a plurality of different codeword sequences and determining a correspondence between each pilot subcarrier and a plurality of different codeword sequences can effectively improve the output power imbalance problem of the pilot symbols.
- FIG. 2 is a schematic structural diagram of a time-frequency resource block according to Embodiment 2 of the present invention.
- FIG. 3 is a flowchart of a resource mapping method according to Embodiment 2 of the present invention.
- FIG. 4 is a schematic structural diagram of a resource mapping apparatus according to Embodiment 3 of the present invention.
- FIG. 5 is a flowchart of a code division multiplexing method according to Embodiment 4 of the present invention.
- Embodiment 6 is a schematic diagram of code division multiplexing provided by Embodiment 5 of the present invention.
- FIG. 7 is a flowchart of a code division multiplexing method according to Embodiment 5 of the present invention.
- FIG. 8 is a schematic structural diagram of a code division multiplexing apparatus according to Embodiment 6 of the present invention.
- this embodiment provides a resource mapping method, and the method is specifically as follows:
- the method provided in this embodiment implements resource mapping by selecting a mapping scheme among the preset at least two mapping schemes by each cell, where the pilot symbol with the strongest transmit power corresponding to the selected mapping scheme is at least The pilot symbols with the strongest transmit power corresponding to the mapping scheme selected by one neighboring cell are mutually shifted in frequency and/or time, so that the interference of the pilot symbols of the cell boundary users can be effectively reduced.
- Embodiment 2
- This embodiment provides a resource mapping method.
- the present embodiment uses the time-frequency resource block shown in FIG. 2 as an example, and the sub-carrier in which the pilot symbol is located is referred to as a pilot sub-carrier, which is provided in this embodiment.
- the resource mapping method is described.
- one subframe contains 2 slots (slots), and there are 7 OFDM (Orthogonal Frequency Division Multiplexing) symbols in each slot; there are 12x7 in each slot.
- RE Resource Element, resource particle.
- the pilot resource allocation method used by the resource block is: Introducing CDM (Code Division Multiplexing) in the time domain, and providing four orthogonal pilot resources, such as the first resource particle in FIG. 2; The introduction of FDM (Frequency Division Multiplexing) in the frequency domain can also provide four orthogonal pilot resources, such as the second resource particle in FIG.
- CDM Code Division Multiplexing
- FDM Frequency Division Multiplexing
- each cell adopts the same mapping scheme, and the mapping scheme shown in Table 1 below is taken as an example:
- mapping scheme shown in Table 1 for example, when the total number of spatial transport layers RANK is 3, according to the mapping relationship shown in Table 1 above, there will be 2 spatial layers transmitted on the first RE, and 1 The spatial layer is transmitted on the second RE. If the transmission power of each spatial layer is equal, and is 1/3 of the average power of the data RE, IJ:
- beta represents the power adjustment factor of the pilot
- P represents the average power of the data RE.
- the transmit power of the dedicated pilot resource on the first RE is twice the transmit power of the dedicated pilot resource on the second RE.
- P represents the average power of the data RE.
- the total number of spatial transmissions (RANK) is 1, 2, 3, 5, and 7, then more spatial layers will be transmitted on the first RE, that is, occupy more power resources, and The corresponding resources of the cell generate large interference.
- the pilot symbol that consumes more power resources and generates greater interference to the corresponding resources of the neighboring cell is referred to as a pilot symbol having the strongest transmit power, and the pilot symbol of the type is used.
- the pilot subcarrier in which it is located is referred to as the pilot subcarrier with the strongest transmit power.
- this embodiment provides a resource mapping method.
- the two mapping schemes are preset as an example. The process is as follows:
- 301 Select one mapping scheme in two preset mapping schemes, where the pilot symbol with the strongest transmit power corresponding to the selected mapping scheme has the most corresponding mapping scheme selected by at least one neighboring cell.
- the pilot symbols of strong transmit power are staggered in frequency and/or time;
- the mapping scheme is a spatial layer number of the transmitted pilot symbol, a codeword used by the pilot symbol, and a correspondence between the subcarriers where the pilot symbol is located. Taking the resource block shown in Figure 2 as an example, mapping schemes A and Table 4 shown in Table 3 below can be set:
- each cell may be selected according to a Cell lD (small cell identifier), for example:
- mapping scheme A Let cell 1 choose mapping scheme A, and neighbor cell 2 choose mapping scheme B.
- P represents the average power of the data RE.
- the pilot interference power from the neighboring cell 2 can be effectively reduced on the pilot symbols of the small area 1 boundary user.
- the different shifts of the above code words can be used on the second RE, for example:
- the advantage of this is: When the cell-specific scrambling code is used, if the scrambling code used on the first RE and the second RE are the same scrambling code, the frequency-division multiplexed pilot symbols use the same scrambling code. The inter-code interference from the neighboring cell received on the first RE and the second RE is different, which can improve the detection performance.
- codewords used by the pilot symbols of the neighboring cells may also be different, and this embodiment does not Body definition.
- the method provided in this embodiment implements resource mapping by selecting one mapping scheme in at least two mapping schemes by each cell, where the pilot symbol with the strongest transmit power corresponding to the selected mapping scheme is adjacent to at least one neighbor.
- the pilot symbols with the strongest transmit power corresponding to the cell-selected mapping scheme are mutually offset in frequency and/or time, so that the interference of the pilot symbols of the cell boundary user can be effectively reduced.
- the method also supports that the pilot symbols of the frequency division multiplexing or the time division multiplexing use the same scrambling code sequence, and/or different codeword sequences, and therefore, the inter-symbol interference of the neighboring cells is different on the pilot. , in turn, can improve detection performance.
- this embodiment provides a resource mapping apparatus, where the apparatus includes:
- the storage module 401 is configured to store at least two mapping schemes, where the mapping scheme is a spatial layer number of the transmission pilot symbol, a codeword used by the pilot symbol, and a correspondence between subcarriers where the pilot symbol is located;
- the selecting module 402 is configured to select, in the at least two mapping schemes stored by the storage module 401, a mapping scheme, where the mapping symbol with the strongest transmit power corresponding to the selected mapping scheme is mapped with the at least one neighboring cell selection
- the pilot symbols corresponding to the scheme having the strongest transmit power are staggered in frequency and/or time;
- the mapping module 403 is configured to perform resource mapping according to a mapping scheme selected by the selecting module 402.
- the selecting module 402 is specifically configured to select one mapping scheme from the at least two mapping schemes stored by the storage module 402 according to the cell identifier.
- the frequency division multiplexed or time division multiplexed pilot symbols employ the same scrambling code sequence and/or employ a different codeword sequence.
- the apparatus provided in this embodiment implements resource mapping by selecting one mapping scheme in at least two mapping schemes by each cell, where the pilot symbol with the strongest transmit power corresponding to the selected mapping scheme is adjacent to at least one neighbor.
- the pilot symbols with the strongest transmit power corresponding to the cell-selected mapping scheme are mutually offset in frequency and/or time, so that the interference of the pilot symbols of the cell boundary user can be effectively reduced.
- the method also supports that the pilot symbols of the frequency division multiplexing or the time division multiplexing use the same scrambling code sequence, and/or different codeword sequences, and therefore, the inter-symbol interference of the neighboring cells is different on the pilot. , in turn, can improve detection performance.
- this embodiment provides a code division multiplexing method, and the process of the method is specifically as follows:
- 502 Determine a correspondence between a plurality of different codeword sequences and respective pilot subcarriers; 503: multiplex pilot symbols of each spatial layer according to a codeword sequence corresponding to each pilot subcarrier on each pilot subcarrier.
- the method provided in this embodiment obtains a plurality of different codeword sequences by performing vector switching on the selected orthogonal matrix, and determines a correspondence between each pilot subcarrier and a plurality of different codeword sequences, so that Each pilot subcarrier uses a different codeword sequence, which can effectively improve the output power imbalance problem of the pilot symbols.
- Embodiment 5
- This embodiment provides a code division multiplexing method.
- the present embodiment uses the resource block shown in FIG. 6 as an example to describe the method provided in this embodiment in detail.
- one subframe contains 2 slots (slots) with 7 OFDM symbols in each slot; in each slot, there are 12x7 REs.
- the pilot resource allocation method adopted by the resource block is: Introducing CDM in the time domain, and providing four orthogonal pilot resources.
- CDM codeword Cl-C4
- the same CDM codeword Cl-C4 is used on the subcarriers nl, nl+5, nl+10.
- the embodiment provides a codeword design method. Referring to FIG. 7, the method of the method provided in this embodiment is as follows:
- Orthogonal matrix W [l 1, 1, i;
- W3 [C, D, A, B], or, [C, D, B, A];
- W4 [D, C, B, A], or, [D, C, A, B] ;
- the four different codeword sequences and each pilot subcarrier may adopt the following correspondence:
- a codeword sequence W1 is used for the pilot subcarrier nl;
- a codeword sequence W2 is used for the pilot subcarrier n2;
- a codeword sequence W3 is used for the pilot subcarrier n3.
- a codeword sequence W4 is used for the pilot subcarrier n4.
- each pilot subcarrier sequentially uses four different codeword sequences W1, W2, W3, and W4.
- the pilot symbols of these spatial layers are multiplexed by CDM codes.
- the pilot symbols of each spatial layer are multiplexed according to a codeword sequence corresponding to each pilot subcarrier on each pilot subcarrier.
- the number of pilot subcarriers is not an integral multiple of 4, the sum of the powers of the pilot REs is similar on each pilot OFDM symbol, that is, the OFDM symbols 6, 7, 13, 14 , and the output power of the pilot The imbalance problem will also be greatly improved.
- row vector exchange may be performed on the selected orthogonal matrix to obtain a plurality of different codeword sequences.
- This embodiment does not specifically limit the vector exchange form of the orthogonal matrix.
- the 4-dimensional orthogonal matrix W is taken as an example to perform row vector exchange on the orthogonal matrix, and four different codeword sequences are obtained for description.
- each pilot subcarrier and four different codeword sequences is as follows:
- a codeword sequence W4' is used for the pilot subcarrier n4.
- each pilot subcarrier sequentially uses four different codeword sequences Wl', W2', W3', and W4'.
- the method provided in this embodiment obtains a plurality of different codeword sequences by performing vector switching on the selected orthogonal matrix, and determines a correspondence between each pilot subcarrier and a plurality of different codeword sequences, so that Each pilot subcarrier adopts a different codeword sequence, thereby effectively improving the output power imbalance problem of the pilot symbols.
- this embodiment provides a code division multiplexing device, where the device includes:
- the obtaining module 801 is configured to perform vector switching on the selected orthogonal matrix to obtain a plurality of different codeword sequences.
- the determining module 802 is configured to determine a plurality of different codeword sequences obtained by the obtaining module and each pilot subcarrier. Correspondence relationship;
- the multiplexing module 803 is configured to multiplex pilot symbols of each spatial layer according to a codeword sequence corresponding to each pilot subcarrier on each pilot subcarrier.
- the obtaining module 801 is specifically configured to use an arbitrary orthogonal matrix W of 4 dimensions.
- W (:, m) represents the column vector corresponding to the mth column of the orthogonal matrix W, and m is 1 to 4, and the orthogonal matrix W is exchanged by the column vector to obtain four different codeword sequences, respectively Yes:
- W3 [ C, D, A, B] , or, [ C, D, B, A];
- W4 [ D, C, B, A] , or, [ D, C, A, B] ;
- the module 802 is determined, specifically for
- a codeword sequence W1 is used for the pilot subcarrier nl;
- a codeword sequence W2 is used for the pilot subcarrier n2;
- a codeword sequence W3 is used for the pilot subcarrier n3.
- a codeword sequence W4 is used for the pilot subcarrier n4.
- the determining module 802 is configured to determine that the respective pilot subcarriers sequentially adopt four different codeword sequences W1, W2, W3, and W4.
- the module 802 is determined, specifically for
- a codeword sequence W4' is used for the pilot subcarrier n4.
- the determining module is configured to determine that the respective pilot subcarriers sequentially adopt four different codeword sequences W1', W2 ⁇ W3', and W4'.
- the apparatus provided in this embodiment obtains a plurality of different codeword sequences by performing vector exchange on the selected orthogonal matrix, and determines between each pilot subcarrier and a plurality of different codeword sequences. The corresponding relationship makes each pilot subcarrier adopt a different codeword sequence, thereby effectively improving the power imbalance caused by the pilot.
- the serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.
- All or part of the steps in the embodiments of the present invention may be implemented by using software, and the corresponding software program may be stored in a readable storage medium such as an optical disk or a hard disk.
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Description
Claims
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20151328.0A EP3672182B1 (en) | 2010-01-08 | 2011-01-07 | Method and apparatus for resource mapping and code division multiplexing |
EP11731682.8A EP2410709B1 (en) | 2010-01-08 | 2011-01-07 | Method and device for resource mapping and code division multiplexing |
AU2011204705A AU2011204705B2 (en) | 2010-01-08 | 2011-01-07 | Method and device for resource mapping and code division multiplexing |
EP13182544.0A EP2696549B1 (en) | 2010-01-08 | 2011-01-07 | Method and apparatus for resource mapping and code division multiplexing |
PL20151328T PL3672182T3 (pl) | 2010-01-08 | 2011-01-07 | Sposób i urządzenie do mapowania zasobów i multipleksowania z podziałem kodowym |
ES11731682.8T ES2439844T3 (es) | 2010-01-08 | 2011-01-07 | Método y dispositivo para poner en correspondencia recursos y la multiplexación por división en código |
BR112012007856-9A BR112012007856B1 (pt) | 2010-01-08 | 2011-01-07 | Metodo para multiplexar por divisão de código e aparelho para projetar palavra código |
RU2012113733/07A RU2502206C1 (ru) | 2010-01-08 | 2011-01-07 | Способ и устройство для преобразования ресурсов и мультиплексирования с кодовым разделением каналов |
CN2011800055494A CN102714644A (zh) | 2010-01-08 | 2011-01-07 | 资源映射、码分复用方法及装置 |
US13/291,697 US8315149B2 (en) | 2010-01-08 | 2011-11-08 | Method and apparatus for resource mapping and code division multiplexing |
US13/614,726 US8625403B2 (en) | 2010-01-08 | 2012-09-13 | Method and apparatus for resource mapping and code division multiplexing |
US13/729,729 US8553523B2 (en) | 2010-01-08 | 2012-12-28 | Method and apparatus for resource mapping and code division multiplexing |
US14/095,656 US9166720B2 (en) | 2010-01-08 | 2013-12-03 | Method and apparatus for resource mapping and code division multiplexing |
US14/868,346 US9496977B2 (en) | 2010-01-08 | 2015-09-28 | Method and apparatus for resource mapping and code division multiplexing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201010002397XA CN102014475B (zh) | 2010-01-08 | 2010-01-08 | 资源映射、码分复用方法及装置 |
CN201010002397.X | 2010-01-08 |
Related Child Applications (1)
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US13/291,697 Continuation US8315149B2 (en) | 2010-01-08 | 2011-11-08 | Method and apparatus for resource mapping and code division multiplexing |
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WO2011082681A1 true WO2011082681A1 (zh) | 2011-07-14 |
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PCT/CN2011/070082 WO2011082681A1 (zh) | 2010-01-08 | 2011-01-07 | 资源映射、码分复用方法及装置 |
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US (5) | US8315149B2 (zh) |
EP (3) | EP2410709B1 (zh) |
CN (4) | CN102014475B (zh) |
AU (3) | AU2011204705B2 (zh) |
BR (1) | BR112012007856B1 (zh) |
ES (1) | ES2439844T3 (zh) |
PL (1) | PL3672182T3 (zh) |
RU (3) | RU2502206C1 (zh) |
WO (1) | WO2011082681A1 (zh) |
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WO2014051494A1 (en) * | 2012-08-09 | 2014-04-03 | Telefonaktiebolaget L M Ericsson (Publ) | Reference signal mapping |
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CN105379170B (zh) | 2013-04-16 | 2019-06-21 | 康杜实验室公司 | 高带宽通信接口方法和*** |
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