WO2010074472A2 - 데이터 프레임을 이용한 데이터 송수신 방법 및 장치 - Google Patents
데이터 프레임을 이용한 데이터 송수신 방법 및 장치 Download PDFInfo
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- WO2010074472A2 WO2010074472A2 PCT/KR2009/007646 KR2009007646W WO2010074472A2 WO 2010074472 A2 WO2010074472 A2 WO 2010074472A2 KR 2009007646 W KR2009007646 W KR 2009007646W WO 2010074472 A2 WO2010074472 A2 WO 2010074472A2
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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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- 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
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
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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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
Definitions
- the present invention relates to a common frame structure applicable to various bandwidths, and a method and apparatus for transmitting and receiving data using the same.
- the services provided by the mobile communication system have been gradually developed in various ways such as not only voice communication service but also packet data transmission / reception service and multimedia broadcasting service for transmitting a large amount of data.
- LTE Long-Term Evolution Network
- IEEE802.16m IEEE802.16m
- IEEE 802.16m which is actively working on standardization, aims to develop a standard that satisfies IMT-Advanced system requirements while maintaining interoperability with existing 802.16 standard-based terminal and base station equipment.
- the evolved IMT-Advanced communication system is a broadband wireless access communication system, which has a wide service area and can support a high transmission speed.
- the broadband wireless access communication system as described above includes Orthogonal Frequency Division Multiplexing (OFDM) and Orthogonal Frequency Division in order to support a broadband transmission network in a physical channel.
- OFDM Orthogonal Frequency Division Multiplexing
- 'OFDMA' A multiplexing access
- the OFDM / OFDMA scheme enables high-speed data communication by transmitting and receiving physical channel signals using a plurality of subcarriers.
- FIG. 1 is a diagram schematically illustrating uplink (UL) and downlink (DL) frame structures of a broadband wireless access communication system using an OFDM / OFDMA scheme.
- the uplink and downlink frame structures include a preamble (101) region, a frame control header (FCH) region, a DL / UL MAP 103, 104 control signal region, and a plurality of data. It consists of a burst area.
- a preamble sequence which is a synchronization signal for obtaining mutual synchronization between the base station and the UE, is transmitted through the preamble 101 region, and channel allocation information related to the DL-MAP 103 is transmitted through the FCH 102 region.
- Channel code information is provided, and channel allocation information of data bursts in downlink and uplink is provided through the DL / UL-MAP 103 and 104 region.
- guard time is inserted between the downlink frame and the uplink frame
- TTG transmit / receive transition gap
- RTG receive / transmit transition gap
- the IMT-Advanced system requires the system to support various bandwidths.
- IEEE802.16m which is currently being standardized, uses 5 MHz, 7 MHz, 8.75 MHz, 10 MHz and 20 MHz as the bandwidth of the system channel. It is defined.
- a specific frame structure is not defined, and in particular, in the case of IEEE802.16m, if the frame is individually designed for each bandwidth, the complexity of the system increases.
- the frame structure is different.
- interference between adjacent cells occurs. Occurs.
- the present invention is to solve the above problems, to provide a frame structure that can be commonly applied to various bandwidths required by the system and a method and apparatus for transmitting and receiving data through the frame structure.
- a data frame for transmitting and receiving data through the downlink and uplink And setting and transmitting and receiving data through the set data frame, wherein the data frame includes at least one first subframe and a different number of data symbols from the first subframe. And at least one second subframe configured.
- the first subframe is composed of six data symbols
- the second subframe is characterized in that the data symbols are composed of five units
- the data frame is the first frame
- the number of subframes is configured to be the maximum.
- the transceiver for transmitting and receiving data through the downlink and uplink; And a data frame including at least one first subframe and at least one second subframe including a different number of data symbols from the first subframe. And a controller for controlling the transceiver to transmit and receive data through a data frame, wherein the controller configures the data frame such that the number of the first subframes is maximum.
- a data transmission / reception method in a data transmission method in an Orthogonal Frequency Division Multiplexing Access (OFDMA) communication system using a time division duplex (TDD) method Setting a data frame including a plurality of sub-frames, and transmitting and receiving data through the set data frame, wherein the cyclic prefix CP of the data frame is a valid OFDMA.
- the symbol length is 1/16
- the transmission channel bandwidth is 7MHz
- the data frame is characterized in that the number of sub-frame consisting of six data symbol units is configured to be the maximum.
- the ratio of the number of downlink and uplink subframes of the data frame is K: J, the number of data symbols allocated to the downlink is 6 * K-1, and the data symbols assigned to the uplink The number is 6 * J, and one data symbol is allocated to a transmit / receive transition gap (TGT), and the last subframe of the downlink is configured by 5 symbol units.
- K the number of data symbols allocated to the downlink
- TGT transmit / receive transition gap
- the ratio of the number of the downlink and uplink subframes of the data frame is 5: 1, and the first subframe to the fourth subframe and the uplink subframe of the downlink are all
- the subframe is composed of 6 symbol units, and the fifth subframe of the downlink is configured of a subframe of 5 symbol units.
- a data transmission and reception method for achieving the above object is a data transmission method in an Orthogonal Frequency Division Multiplexing Access (OFDMA) communication system of Frequency Division Duplex (FDD) method.
- the method may include setting a data frame including a plurality of subframes, and transmitting and receiving data through the set data frame, wherein the cyclic prefix CP of the data frame has a length of an effective OFDMA symbol length. 1/16, the transmission channel has a bandwidth of 7MHz, and the data frame is characterized by consisting of only six sub-frames consisting of six data symbol units.
- a data transmission / reception apparatus including a transceiver configured to transmit and receive data through downlink and uplink, and at least one subframe including n data symbols.
- a controller configured to set a data frame including a frame and control the transceiver to transmit and receive data through the set data frame, wherein the controller has a maximum number of sub-frames;
- the data frame is configured to be possible.
- the cyclic prefix CP of the data frame is 1/16 of an effective OFDM symbol length, a bandwidth of a transmission channel is 7 MHz, and the data symbol unit n of the subframe is 6 do.
- FIG. 1 is a view schematically showing an uplink and downlink frame structure of a broadband wireless access communication system
- FIG. 2 is a diagram schematically showing an OFDM / OFDMA symbol structure used in the present invention.
- FIG. 3 schematically illustrates a high level frame structure according to an embodiment of the present invention.
- FIG. 4 schematically illustrates a frame structure of an FDD scheme according to an embodiment of the present invention.
- FIG. 5 schematically illustrates a frame structure of a TDD scheme according to an embodiment of the present invention.
- FIG. 6 illustrates a TDD and FDD frame structure according to another embodiment of the present invention.
- FIG. 7 illustrates a TDD frame structure according to another embodiment of the present invention.
- FIG. 8 illustrates a TDD frame structure according to another embodiment of the present invention.
- FIG 9 illustrates an FDD frame structure according to another embodiment of the present invention.
- FIG. 10 illustrates a TDD and FDD frame structure according to another embodiment of the present invention.
- FIG. 11 illustrates a TDD and FDD frame structure according to another embodiment of the present invention.
- FIG. 12 illustrates a TDD frame structure according to another embodiment of the present invention.
- FIG 13 illustrates an FDD frame structure according to another embodiment of the present invention.
- FIG. 14 illustrates a TDD frame structure according to another embodiment of the present invention.
- FIG. 15 illustrates a TDD frame structure according to another embodiment of the present invention.
- FIG 16 illustrates an FDD frame structure according to another embodiment of the present invention.
- 17 is a block diagram showing a data transmission and reception apparatus according to an embodiment of the present invention.
- the terminal may be referred to as a subscriber station (SS), a user equipment (UE), a mobile equipment (ME), or a mobile station (MS).
- the terminal may be a portable device having a communication function, such as a mobile phone, a PDA, a smart phone, a notebook computer, or a non-portable device such as a PC or a vehicle-mounted device.
- FIG. 2 is a diagram schematically showing an OFDM / OFDMA symbol structure used in the present invention.
- the guard interval is not used in a certain part in front of each symbol in consideration of the influence of inter symbol interference (ISI) caused by the reflected wave.As shown, a part of the rear part of the symbol is guard interval interval. Copy it and insert it. As described above, the front part of the symbol inserted in the Guard Interval is called a cyclic prefix (CP).
- ISI inter symbol interference
- CP cyclic prefix
- the effective OFDM symbol length is Tb except the length Tg of CP from the total OFDM symbol length Ts.
- the frame structure including the OFDM / OFDMA symbols may be determined according to the frame parameters shown in Table 1 below, and the frame size and the number of subframes and symbols.
- FIG. 3 is a diagram schematically illustrating a high level frame structure according to an embodiment of the present invention.
- the frame structure applied to the system of the present invention has a frame of 5ms unit as a basic component, and the frame may be defined as an interval between preambles as one basic transmission unit.
- the frame may include a plurality of transmission time intervals (TTIs) having different sizes.
- TTI is a basic unit of scheduling performed in a medium access control (MAC) layer, and the TTI is called a radio resource allocation unit. can do.
- MAC medium access control
- the frame includes at least one subframe, and the size of the subframe is determined in symbol units.
- subframes are defined as four types of Type-1, Type-2, Type-3, and Type-4 according to the bandwidth and CP length of the system.
- the Type-1 subframe consists of six OFDM symbols
- the Type-2 subframe consists of seven OFDM symbols
- the Type-3 subframe consists of five OFDM symbols
- the Type-4 subframe consists of nine It consists of an OFDM symbol.
- a super frame including a plurality of the frames is configured, and the super frame may be configured, for example, in units of 20 ms.
- system configuration information and broadcast information for initial fast cell selection and low latency service are set as a transmission unit, and generally two to six frames are set as one transmission unit. It consists of super frames.
- one frame of 5 ms units consists of a plurality of sub-frames, and each subframe consists of a plurality of OFDM / OFDMA symbols.
- Each super frame includes one super frame header (SFH) including a broadcast channel, and the SFH is located in the first downlink (DL) subframe of the corresponding super frame.
- SFH super frame header
- the frame structure may be designed according to a bandwidth, a duplex scheme, a CP length, and the like of a system channel.
- FIG. 4 is a diagram schematically illustrating a frame structure of an FDD scheme according to an embodiment of the present invention.
- downlink and uplink transmissions are distinguished in the frequency domain, and all subframes in each frame are capable of both downlink and uplink transmissions.
- a UE in FDD mode may receive a data burst in any downlink subframe while simultaneously accessing an uplink subframe.
- a 20 ms superframe includes four 5 ms frames (F0, F1, F2, F3).
- One frame F2 includes eight subframes SF0, SF1, SF2, SF3, SF4, SF5, SF6, SF7 having a length of 0.617 ms and an idle time interval of 62.86 ⁇ s.
- the subframe includes a Type-2 subframe including seven OFDM symbols S0, S1, S2, S3, S4, S5, and S6.
- FIG. 5 is a diagram schematically illustrating a frame structure of a TDD scheme according to an embodiment of the present invention.
- downlink and uplink transmissions are distinguished in the time domain, and after downlink transmission time intervals, uplink transmission time intervals are allocated to transmit and receive data through downlink and uplink.
- FIG. 5 defines a TDD mode frame structure in the case of channel bandwidths of 5, 10, and 20 MHz and CP length of 1/8 Tb, as in FIG. 4, and a 20 ms superframe includes four 5 ms frames (F0, F1, F2,
- One frame F2 includes eight subframes (SF0, SF1, SF2, SF3, SF4, SF5, SF6, SF7) having a length of 0.617 ms and an idle time interval of 62.86 ⁇ s.
- the frame F2 is composed of consecutive D downlink frames and consecutive U uplink frames determined according to a ratio (D: U) of DL and UL, and a ratio of DL and UL is 5: 3.
- five subframes SF0, SF1, SF2, SF3, SF4 are configured as downlink frames
- three subframes SF5, SF6, SF7 are configured as uplink frames.
- One idle symbol for distinguishing the DL and the UL is inserted between the last downlink subframe SF4 and the first uplink subframe SF5 to inform that the switch is switched from the DL to the UL.
- the gap inserted between the downlink and the uplink is called a TTG (transmit transition gap)
- RTG receive transition gap
- uplink transmission can be distinguished.
- the last downlink subframe SF4 is composed of five OFDM symbols and one last Idle symbol S5, and the Idle symbol S5 is a TTG (transmit / receive transition gap).
- FIG. 6 illustrates a TDD and FDD frame structure according to another embodiment of the present invention.
- the CP length is 1 / 16Tb, and the transmission channel bandwidths are assumed to be 5, 10, and 20 MHz.
- the ratio of DL and UL is 5: 3 and the length of the TDD / FDD frame is basically 5ms.
- the total number of OFDM symbols in one frame (TDD frame, FDD frame) is 48, and one frame is composed of a total of eight subframes. Accordingly, unlike the embodiments of FIGS. 4 and 5 described above, the subframes cannot be configured in the same type, and the Type-1 subframe 610 having 6 OFDM symbols and the Type- having 7 OFDM symbols Two subframes 620 are configured in two forms.
- the Type-1 subframe 610 consists of six OFDM symbols and has a length of 0.583 ms
- the Type-2 subframe 620 consists of seven OFDM symbols and has a length of 0.680 ms.
- the TDD Frame and the FDD Frame have the same size and subprime configuration, but in the case of the TDD Frame, since the TTG is required between the DL and the UL, the last symbol of the fifth subframe SF4 is composed of the Idle symbol 611. .
- the frame structure is designed such that a Type-1 subframe composed of 6 symbol units is configured as the basic subframe, and the basic subframe (Type-1 subframe)
- the frame is configured to be the maximum number in this one frame. In this way, the frame is configured to have the maximum number of basic subframes. Since the minimum size of the TTI, which is a basic unit when transmitting and receiving data using the frame between the transmitting and receiving terminals, is a subframe, a pilot and a resource block of the physical layer (PHY) resource block) has the advantage of bringing the same configuration and design as possible.
- FIG. 7 illustrates a TDD frame structure according to an embodiment of the present invention.
- the number of OFDM symbols available for bandwidth 7 MHz and 1/8 Tb CP length is 34.
- a Type-1 subframe composed of six symbols is used as a basic subframe, and in this embodiment, a Type-1 subframe composed of six symbol units is used as much as possible.
- FIG. 7 one frame is composed of six subframes, and when the Type-1 subframe composed of six symbol units is used at maximum, 30 symbols (6 * 5) are configured and four symbols remain. . If one symbol is missing for TTG in the TDD structure, three symbols remain, and thus, a subframe composed of three units is possible.
- a subframe composed of three symbol units is defined as a mini-subframe.
- the physical layer (PHY) structure for the Type-1 subframe consisting of six units can be divided into three symbol units, there is an advantage that a part of the existing PHY structure can be utilized when configuring the mini-subframe.
- a structure in which a mini-subframe is composed of a type-4 subframe consisting of nine symbols by tying up a type-1 subframe consisting of six symbols may be considered.
- the frame structure may be configured in an embodiment of the frame structure 720, 730, or 740 except for the frame structure 710 of FIG.
- the ratio of DL and UL possible in TDD may be composed of four types of frames 710, 720, 730, and 740, such as 2: 4, 3: 3, 4: 2, and 5: 1. have.
- the last subframe of the DL consists of a mini-subframe consisting of the three symbols described above and the last one symbol is allocated for TTG.
- FIG. 8 illustrates a TDD frame structure according to another embodiment of the present invention.
- the TDD frame is configured based on the type-3 subframe consisting of five symbols.
- the description of the bar of FIG. 7 may be omitted as it is, and only when the DL / UL ratio is 4: 2 and 5: 1.
- the description of the bar of FIG. 7 may be omitted as it is, and only when the DL / UL ratio is 4: 2 and 5: 1.
- the first subframe is considered to be used for SFH.
- the second and third subframes SF1 and SF2 are composed of Type-3 subframes consisting of five symbols
- the fourth DL subframe SF3 is substantially five symbol units when including a symbol for TTG. It consists of a type-3 subframe.
- the UL subframes SF4 and SF5 are all composed of Type-1 basic subframes having 6 symbol units.
- the first subframe is composed of Type-1 basic subframes (SF0) consisting of six symbols in consideration of being used for SFH.
- the third and fourth subframes SF2 and SF3 are composed of Type-3 subframes consisting of five symbols, and when the fifth DL subframe SF4 includes symbols for TTG, substantially five It consists of Type-3 subframes composed of symbol units.
- the UL subframe SF5 is composed of Type-1 subframes having 6 symbol units.
- the frame may be basically configured to have a maximum number of Type-1 subframes composed of six symbol units.
- FIG 9 illustrates an FDD frame structure according to an embodiment of the present invention.
- a frame is configured to have a maximum number by using a Type-1 subframe composed of six symbols as a basic subframe, and one FDD frame is configured by adding one mini subframe.
- a gap used as a TTG / RTG is not required, and thus, one symbol may be additionally allocated in the frame in addition to the basic subframe and the mini subframe.
- mini subframes SF3 and SF5 In the case of the first and second FDD frames 910 and 920, one remaining symbol is added to the mini subframes SF3 and SF5 to form an extended mini subframe SF3 and SF5 consisting of four symbols. have.
- the mini subframe is not limited to the one shown in the drawings and does not limit its arrangement in the frame.
- the mini-subframe into a type-4 subframe consisting of nine symbols by tying up a type-1 subframe consisting of six symbols.
- SF4 and a mini subframe which are Type-1 subframes, are composed of 9 symbols by combining SF5 in the 930, 940, or 950 frame structure of FIG. This is a Type-4 subframe.
- FIG. 10 illustrates a TDD and FDD frame structure according to another embodiment of the present invention.
- 10 symbols among the 34 symbols constituting one frame are composed of a type-3 subframe consisting of 5 symbols, and the remaining 24 symbols are composed of 6 units of symbols. Consisting of type-1 subframes. Therefore, the type-3 subframe composed of 6 symbol units becomes the basic subframe unit and is configured in four within one frame, and the two type-3 subframes composed of five symbol units are configured, thereby making the basic subframe This maximum frame structure is possible.
- one symbol is allocated to the TTG section, and thus three type-3 subframes consisting of five symbols are substantially configured.
- This configuration is similar to the frame configuration of CP length of 1 / 16Tb in the 5, 10, and 20 MHz bands described above, and the type-3 subframe is allocated to the DL and UL one by one while the maximum type-1 subframe is configured. It is arranged to add one more to the last subframe of DL used.
- the FDD frame 1005 When configuring the FDD frame 1005 based on the type-1 subframe, one symbol is added as compared to the TDD frames 1001, 1002, 1003, and 1004 described above, so that two type-3 subframes and four type- subframes are added. It consists of 1 subframe.
- the location of the type-3 subframe may be configured to be positioned at the front and the rear as shown, and the present invention does not place any particular limitation on the position.
- FIG. 11 illustrates a TDD and FDD frame structure according to another embodiment of the present invention.
- a frame is constructed based on a Type-2 subframe composed of seven symbols.
- TDD frames 1101, 1102, and 1103 one symbol of TTG may be used, and one symbol of the type-2 subframe is used as the TTG, and the corresponding subframe is converted into a type-1 subframe.
- the characteristics of the TDD frames 1101, 1102, and 1103 may constitute a frame with only two types of subframes, such as a frame structure, in the bands 5, 10, and 20 MHz described above, and a conventional physical layer (PHY) structure. There is an advantage that can be used equally.
- PHY physical layer
- the ratios of DL and UL considered in TDD frames 1101, 1102, and 1103 are defined for 2: 3, 3: 2 and 4: 1, and the basic subframe should be placed first in order to unify the size of the SFH. It may not be affected by the ratio of DL and UL.
- the other TDD frames 1104 and 1105 are embodiments in which the number of symbols on the UL side is set in multiples of 6 when the ratio of DL to UL is 3: 2 and 4: 1. This is desirable in terms of legacy support, so the possible DL: UL ratios are only 3: 2 and 4: 1.
- the TDD frame 1105 that configures one subframe of the DL in the form of six subframes and one independent symbol in consideration of the position of the SFH may be considered.
- the FDD frame 1110 can also be configured using a type-2 subframe of 7 symbol units, with the first subframe being 6 symbols to bring commonality with SFH designs of different bandwidths (5, 10 and 20 MHz). It is preferable to configure the configured type-1 subframe. However, the position of the type-1 subframe is not limited to that shown and may be arranged freely within the frame.
- FIG. 12 is a diagram illustrating a TDD frame structure according to another embodiment of the present invention.
- a frame is configured based on a type-3 subframe composed of 5 symbol units. That is, 15 symbols are composed of three type-3 subframes out of 34 symbols constituting one frame, 12 symbols are composed of two type-1 subframes, and the remaining seven symbols are type-2 subframes. Configure.
- the last subframe of the DL related to the TTG interval may be changed to another subframe type. For example, when a type-2 subframe consisting of seven symbol units is placed in the last subframe in the DL, the type-2 subframe is changed to a type-1 subframe due to the TTG interval. When the type-1 subframe is disposed as the last subframe of the DL, the type-1 subframe is changed to a type-3 subframe of 5 symbol units.
- FIG. 13 is a diagram illustrating an FDD frame structure according to another embodiment of the present invention.
- an FDD frame is configured based on a type-3 subframe. Since the first illustrated FDD frame 1310 does not require TTG, one symbol is further increased compared to the TDD frame 1204 shown in FIG. 12, and this extended symbol is a type-1 subframe type. Changed to -2 subframe.
- the second illustrated FDD frame 1320 does not need a TTG as well, one more symbol is added compared to the TDD frame 840 shown in FIG. 8, and the extended symbol is one type-3 subframe. Is changed to a type-1 subframe. Accordingly, the FDD frame 1320 includes a total of four type-1 subframes and two type-3 subframes. The location of the type-3 subframe is not limited to the illustrated example and may be freely modified.
- one symbol 1331 may be separated, and the remaining symbols may include three type-1 subframes and three type-3 subframes. At this time, the position of one distant symbol 1331 is not limited.
- two symbols 1341 and 1343 may be separated from each other, and three symbols 1351 and 1353, like other FDD frames 1350, may be considered. It is also conceivable that 1355 are constructed apart from each other.
- One symbols 1331, 1341, 1343, 1351, 1353, and 1355 independently configured in the FDD frames 1330, 1340, and 1350 transmit additional information such as a preamble or an FCH. Can be utilized.
- the TDD frame structure will be described with reference to related drawings.
- FIG. 14 illustrates a TDD frame structure according to an embodiment of the present invention, and illustrates a TDD frame structure when the CP length is 1 / 16Tb compared to the case where the CP length is 1 / 8Tb. .
- the number of OFDM symbols available for 1 / 8Tb CP length is 34, and the number of OFDM symbols available for 1 / 16Tb CP length is 36.
- the Type-1 subframe size composed of 6 symbol units is used as the basic subframe.
- a TDD frame 1410 having a CP length of 1 / 8Tb has a DL / UL ratio of 4: 2.
- the first subframe is composed of six symbols in consideration of being used for SFH.
- the second and third subframes (SF1, SF2) is composed of a Type-3 subframe consisting of five symbols
- the fourth DL subframe (SF3) is a Type-1 subframe
- the fourth subframe is eventually converted to a Type-3 subframe of 5 symbol units.
- the UL subframes SF4 and SF5 are all composed of Type-1 subframes having 6 symbol units.
- the frame can be basically configured so that the basic subframe composed of six symbol units is maximum, thus forming a frame having commonality with the frame structure in the other channel transmission band even in the 7 MHz channel transmission band. It can transmit and receive data through this.
- the basic subframe is composed of 6 symbol units of Type-1, and the frame is configured such that the basic subframe is maximum. Accordingly, as shown, except for the last subframe SF3 of the DL, all are configured as Type-1 subframes of 6 symbols. Since the last subframe SF3 of the DL allocates one symbol for TTG, it consists of Type-3 subframes of five symbols.
- TDD frame structure should be designed so that DL and UL boundaries between TDD frames 1410 and 1420 having different CP lengths do not overlap each other.
- the number of symbols in the TDD frame 1410 of 1 / 8Tb is 34 (21 DLs, 1 TTG, and 12 ULs).
- FIG. 15 is a diagram illustrating a TDD frame structure according to another embodiment of the present invention and corresponds to an embodiment where a DL / UL ratio is 5: 1.
- the TDD frame 1510 having a CP length of 1 / 8Tb, since the total number of symbols is 34, four Type-1 subframes consisting of six symbol units and four Type-3 subframes consisting of five symbol units are provided.
- the basic subframe composed of six symbol units can be configured to be the maximum, and thus, the frame can be designed to have commonality with the frame structure in other channel transmission bands even in the 7 MHz channel transmission band.
- the first subframe is preferably configured as a Type-1 subframe SF0 composed of six symbols in consideration of being used for the SFH (Super Frame Header).
- the last subframe of the DL is configured as a Type-1 subframe composed of 6 symbol units, and the last one symbol is referred to as a TTG.
- the Type-1 subframe is converted into a Type-3 subframe SF4 composed of 5 symbol units.
- the TDD frame 1520 having a CP length of 1 / 16Tb is a Type-1 subframe in which the basic subframe is composed of 6 symbol units, and the basic subframe is maximum. Configure the frame so that Accordingly, as shown, except for the last subframe SF4 of the DL, all are configured as a basic subframe of 6 symbols. Since the last subframe SF4 of the DL allocates one symbol for TTG, it consists of Type-3 subframes of five symbols.
- the TDD frame structure must be designed so that DL and UL boundaries between the TDD frames 1510 and 1520 do not overlap each other.
- FIG 16 illustrates an FDD frame structure according to an embodiment of the present invention.
- the FDD frame is designed to have commonality with the TDD structure.
- TTG since TTG is not required in the FDD, all sixty symbols can be used to configure six Type-1 subframes consisting of six symbols. Therefore, since 6 sub-frames are used to the maximum, the PHY structure and the MAC structure defined in the existing 5, 10, and 20 MHz bands can be recycled, and the system complexity can be reduced.
- 17 is a block diagram illustrating an apparatus for transmitting and receiving data according to an embodiment of the present invention.
- the apparatus includes a transceiver 1701 for transmitting and receiving data configured in a frame format and a controller 1703 for controlling data transmission and reception of the transceiver.
- the controller 1703 sets a data frame for transmitting and receiving data through downlink and uplink, and controls the transceiver to transmit and receive data through the set data frame.
- the controller 1703 configures the frame described above with reference to FIGS. 3 to 16 according to the FDD or TDD mode to transmit and receive data.
- the data frame set by the controller 1703 is at least one type-1 subframe composed of six data symbols, at least one type-2 subframe composed of seven data symbols, and data.
- a type-3 subframe consisting of five symbols, or at least one type-4 subframe consisting of nine data symbols, and a specific frame is formed by referring to a bandwidth of a transmission channel and the system parameters of Table 1 above. Since the frame setting of the controller has been described above with reference to the related drawings, it will be omitted below.
- the controller 1703 sets a data frame including at least one subframe composed of n data symbols, and sets the data frame through the set data frame. Control the transceiver 1701 to transmit and receive.
- controller 1703 configures a maximum number of subframes configured in units of n symbols in configuring a data frame.
- the data frame is configured such that a basic sub-frame consisting of six data symbols is maximum, and a specific frame is formed by referring to the bandwidth of the transmission channel and the system parameters of Table 1 above.
- the method according to the invention described thus far can be implemented in software, hardware, or a combination thereof.
- the method according to the present invention may be stored in a storage medium (eg, terminal internal memory, flash memory, hard disk, etc.) and executed by a processor (eg, terminal internal microprocessor). It may be implemented as codes or instructions within a software program that can be.
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Abstract
Description
Nominal Channel Bandwidth (MHz) | 5 | 7 | 8.75 | 10 | 20 | |
Over-sampling Factor | 28/25 | 8/7 | 8/7 | 28/25 | 28/25 | |
Sampling Frequency (MHz) | 5.6 | 8 | 10 | 11.2 | 22.4 | |
FFT size | 512 | 1024 | 1024 | 1024 | 2048 | |
Sub-Carrier Spacing (KHz) | 10.937500 | 7.812500 | 9.765625 | 10.937500 | 10.937500 | |
Useful symbol Time Ts (μs) | 91.429 | 128 | 102.4 | 91.429 | 91.429 | |
Cyclic Prefix (CP)Tg=1/8 Tu | Symbol Time Ts(μs) | 102.857 | 144 | 115.2 | 102.857 | 102.857 |
FDD | Number of OFDM symbols per Frame | 48 | 34 | 43 | 48 | 48 |
Idle time(μs) | 62.857 | 104 | 46.40 | 62.857 | 62.857 | |
TDD | Number of OFDM symbols per Frame | 47 | 33 | 42 | 47 | 47 |
TTG+RTG (μs) | 165.714 | 248 | 161.6 | 165.714 | 165.714 | |
Cyclic Prefix (CP) Tg=1/16 Tu | Symbol Time Ts(μs) | 97.143 | 136 | 108.8 | 97.143 | 97.143 |
FDD | Number of OFDM symbols per Frame | 51 | 36 | 45 | 51 | 51 |
Idle time(μs) | 45.71 | 104 | 104 | 45.71 | 45.71 | |
TDD | Number of OFDM symbols per Frame | 50 | 35 | 44 | 50 | 50 |
TTG+RTG (μs) | 142.853 | 240 | 212.8 | 142.853 | 142.853 | |
Cyclic Prefix (CP)Tg=1/4 Tu | Symbol Time Ts(μs) | 114.286 | 160 | 128 | 114.286 | 114.286 |
FDD | Number of OFDM symbols per Frame | 43 | 31 | 39 | 43 | 43 |
Idle time(μs) | 85.694 | 40 | 8 | 85.694 | 85.694 | |
TDD | Number of OFDM symbols per Frame | 42 | 30 | 38 | 42 | 42 |
TTG+RTG (μs) | 199.98 | 200 | 136 | 199.98 | 199.98 |
Claims (21)
- 광대역 무선 통신 시스템에서 데이터 전송 방법에 있어서,하향링크 및 상향링크를 통하여 데이터를 송수신하기 위한 데이터 프레임(frame)을 설정하는 단계, 및상기 설정된 데이터 프레임을 통해서 데이터를 송수신하는 단계를 포함하며,상기 데이터 프레임은 적어도 하나 이상의 제1 서브프레임(sub-frame)과 상기 제1 서브프레임과 서로 다른 개수의 데이터 심볼로 구성되는 적어도 하나 이상의 제2 서브프레임을 포함하는 것을 특징으로 하는 데이터 송수신 방법.
- 제 1항에 있어서,상기 광대역 무선 통신 시스템은 OFDM(Orthogonal Frequency Division Multiplexing) 또는 OFDMA(Orthogonal Frequency Division Multiplexing Access) 방식을 지원하고, 상기 하향링크와 상향링크는 상호 시간으로 구분되는 시분할 다중화(TDD: Time Division Duplex) 방식 또는 상호 주파수로 구분되는 주파수분할 다중화(FDD: Frequency Division Duplex) 방식인 것을 특징으로 하는 데이터 송수신 방법.
- 제 2항에 있어서,상기 제1 서브프레임은 데이터 심볼이 6개 단위로 구성되며, 상기 제2 서브프레임은 데이터 심볼이 5개 단위로 구성되는 것을 특징으로 하며,상기 데이터 프레임은 상기 제1 서브프레임의 개수가 최대가 되도록 구성되는 것을 특징으로 하는 데이터 전송방법.
- 제 2항에 있어서,상기 하향링크와 상향링크는 상호 시간으로 구분되는 시분할 다중화(TDD) 방식이며, 상기 하향링크와 상향링크의 서브 프레임 개수의 비율은 4:2 이며, 상기 데이터 프레임은 전송 채널의 대역폭이 7MHz이고 순환 전치부(CP)는 유효 OFDM 심볼 길이(Tb)의 1/8 (1/8 Tb) 길이 이며,상기 제1 서브프레임은 데이터 심볼이 6개 단위로 구성되며, 상기 제2 서브프레임은 데이터 심볼이 5개 단위로 구성되며,상기 하향링크의 데이터 프레임은 1개의 제1 서브프레임과 3개의 제2 서브프레임을 포함하되, 상기 하향링크 데이터 프레임의 첫 번째 서브 프레임은 상기 제1 서브프레임이며,상기 상향링크의 데이터 프레임은 2개의 제1 서브프레임을 포함하며,상기 하향링크와 상향링크 프레임 사이에 하나의 데이터 심볼이 삽입되어 TTG(transmit/receive transition gap)로 구성되는 것을 특징으로 하는 데이터 전송 방법.
- 제 2항에 있어서,상기 하향링크와 상향링크는 상호 주파수로 구분되는 주파수분할 다중화(FDD) 방식이며, 상기 데이터 프레임은 전송 채널의 대역폭이 7MHz이고 순환 전치부(CP)는 유효 OFDM 심볼 길이(Tb)의 1/8(1/8 Tb) 길이 이며,상기 제1 서브프레임은 데이터 심볼이 6개 단위로 구성되며, 상기 제2 서브프레임은 데이터 심볼이 5개 단위로 구성되며,상기 데이터 프레임의 첫 번째, 두 번째, 다섯 번째 및 여섯 번째 서브프레임은 상기 제1 서브프레임이며, 상기 데이터 프레임의 세 번째 및 네 번째 서브프레임은 상기 제2 서브프레임인 것을 특징으로 하는 데이터 전송 방법.
- 제 2항에 있어서,상기 제1 서브프레임은 데이터 심볼이 6개 단위로 구성되며, 상기 제2 서브프레임은 데이터 심볼이 3개 단위로 구성되는 것을 특징으로 하며,상기 데이터 프레임은 상기 제1 서브프레임의 개수가 최대가 되도록 구성되는 것을 특징으로 하는 데이터 전송방법.
- 제 6항에 있어서,상기 데이터 프레임의 전송 채널의 대역폭은 7MHz이고, 순환 전치부(CP) 는 유효 OFDM 심볼 길이(Tb)의 1/8 (1/8 Tb) 길이 이며,상기 하향링크와 상향링크는 상호 시간으로 구분되는 시분할 다중화(TDD: Time Division Duplex) 방식이며,상기 하향링크의 데이터 프레임은 적어도 하나 이상의 제1 서브프레임과 상기 하향링크의 가장 마지막 서브 프레임으로 구성되는 하나의 제2 서브프레임을 포함하며, 상기 상향링크의 데이터 프레임은 적어도 하나 이상의 제1 서브프레임을 포함하며,상기 하향링크와 상향링크 프레임 사이에 하나의 데이터 심볼이 삽입되어 TTG(transmit/receive transition gap)로 구성되는 것을 특징으로 하는 데이터 전송 방법.
- 제 6항에 있어서,상기 데이터 프레임 전송 채널의 대역폭이 7MHz이며, 상기 데이터 프레임의 순환 전치부(CP)는 유효 OFDM 심볼 길이(Tb)의 1/8 (1/8 Tb) 이며,상기 하향링크와 상향링크는 상호 주파수로 구분되는 주파수 다중화(FDD: Frequency Division Duplex) 방식이며,상기 데이터 프레임은 다섯 개의 제1 서브프레임과 하나의 제2 서브프레임으로 구성되며,하나의 OFDM 심볼은 소정 서브 프레임의 앞에 위치하여 소정의 제어 정보를 전달하는 것을 특징으로 하는 데이터 전송방법.
- 제 8항에 있어서,상기 하나의 OFDM 심볼은 첫 번째 서브프레임, 세 번째 서브프레임 또는 네 번째 서브프레임의 앞에 위치하는 것을 특징으로 하는 데이터 전송방법.
- 데이터 송수신 장치에 있어서,하향링크와 상향링크를 통해서 데이터를 송수신 하는 송수신기, 및적어도 하나 이상의 제1 서브프레임(sub-frame)과 상기 제1 서브프레임과 서로 다른 개수의 데이터 심볼로 구성되는 적어도 하나 이상의 제2 서브프레임을 포함하는 데이터 프레임을 설정하고, 상기 설정된 데이터 프레임을 통해서 데이터를 송수신하도록 상기 송수신기를 제어하는 제어기를 포함하며,상기 제어기는 상기 제1 서브프레임의 개수가 최대가 되도록 상기 데이터 프레임을 구성하는 것을 특징으로 하는 데이터 송수신 장치.
- 제 10항에 있어서,상기 데이터 송수신 장치는 OFDM(Orthogonal Frequency Division Multiplexing) 또는 OFDMA(Orthogonal Frequency Division Multiplexing Access) 방식을 지원하며, 상기 하향링크와 상향링크는 상호 시간으로 구분되는 시분할 다중화(TDD: Time Division Duplex) 방식 또는 상호 주파수로 구분되는 주파수분할 다중화(FDD: Frequency Division Duplex) 방식인 것을 특징으로 하는 데이터 송수신 장치.
- 제 11항에 있어서,상기 하향링크와 상향링크는 상호 시간으로 구분되는 시분할 다중화(TDD) 방식이며, 상기 하향링크와 상향링크의 서브 프레임 개수의 비율은 4:2 이며, 상기 데이터 프레임은 전송 채널의 대역폭이 7MHz이고 순환 전치부(CP)는 유효 OFDM 심볼 길이(Tb)의 1/8 (1/8 Tb) 길이 이며,상기 제1 서브프레임은 데이터 심볼이 6개 단위로 구성되며, 상기 제2 서브프레임은 데이터 심볼이 5개 단위로 구성되며,상기 하향링크의 데이터 프레임은 1개의 제1 서브프레임과 3개의 제2 서브프레임을 포함하되, 상기 하향링크 데이터 프레임의 첫 번째 서브 프레임은 상기 제1 서브프레임이며,상기 상향링크의 데이터 프레임은 2개의 제1 서브프레임을 포함하며,상기 하향링크와 상향링크 프레임 사이에 하나의 데이터 심볼이 삽입되어 TTG(transmit/receive transition gap)로 구성되는 것을 특징으로 하는 데이터 전송 장치.
- 제 11항에 있어서,상기 하향링크와 상향링크는 상호 주파수로 구분되는 주파수분할 다중화(FDD) 방식이며, 상기 데이터 프레임은 전송 채널의 대역폭이 7MHz이고 순환 전치부(CP)는 유효 OFDM 심볼 길이(Tb)의 1/8(1/8 Tb) 길이 이며,상기 제1 서브프레임은 데이터 심볼이 6개 단위로 구성되며, 상기 제2 서브프레임은 데이터 심볼이 5개 단위로 구성되며,상기 데이터 프레임의 첫 번째, 두 번째, 다섯 번째 및 여섯 번째 서브프레임은 상기 제1 서브프레임이며, 상기 데이터 프레임의 세 번째 및 네 번째 서브프레임은 상기 제2 서브프레임인 것을 특징으로 하는 데이터 전송 장치.
- 제 11항에 있어서,상기 제1 서브프레임은 데이터 심볼이 6개 단위로 구성되며, 상기 제2 서브프레임은 데이터 심볼이 3개 단위로 구성되는 것을 특징으로 하는 데이터 송수신 장치.
- 시분할 다중화(TDD: Time Division Duplex) 방식의 OFDMA(Orthogonal Frequency Division Multiplexing Access) 통신 시스템에서 데이터 전송 방법에 있어서,다수의 서브 프레임(sub-frame)을 포함하는 데이터 프레임(frame)을 설정하는 단계, 및상기 설정된 데이터 프레임을 통해서 데이터를 송수신하는 단계를 포함하며,상기 데이터 프레임의 순환 전치부(CP)는 유효 OFDM 심볼 길이의 1/16이며, 전송 채널의 대역폭은 7MHz이고,상기 데이터 프레임은 데이터 심볼 단위가 6개로 구성된 서브 프레임의 개수가 최대가 되도록 구성되는 것을 특징으로 하는 데이터 송수신 방법.
- 제 15항에 있어서,상기 데이터 프레임의 하향링크와 상향링크의 서브 프레임 개수의 비율은 K:J 이며,상기 하향링크에 할당되는 데이터 심볼 개수는 6*K-1 이며,상기 상향링크에 할당되는 데이터 심볼 개수는 6*J 이며,상기 한 개의 데이터 심볼은 TTG(transmit/receive transition gap)로 할당되며, 상기 하향링크의 마지막 서브 프레임은 5개 심볼 단위로 구성되는 것을 특징으로 하는 데이터 송수신 방법.
- 제 16항에 있어서,상기 데이터 프레임의 상기 하향링크와 상향링크의 서브 프레임 개수의 비율은 5:1 이며,상기 하향링크의 첫 번째 서브 프레임 내지 네 번째 서브 프레임과, 상기 상향링크의 서브 프레임은 모두 6개 심볼 단위의 서브 프레임으로 구성되며, 상기 하향링크의 다섯 번째 서브 프레임은 5개 심볼 단위의 서브 프레임으로 구성되는 것을 특징으로 하는 데이터 송수신 방법.
- 주파수분할 다중화(FDD: Frequency Division Duplex) 방식의 OFDMA(Orthogonal Frequency Division Multiplexing Access) 통신 시스템에서 데이터 전송 방법에 있어서,다수의 서브 프레임을 포함하는 데이터 프레임(frame)을 설정하는 단계, 및상기 설정된 데이터 프레임을 통해서 데이터를 송수신하는 단계를 포함하며,상기 데이터 프레임의 순환 전치부(CP)는 유효 OFDM 심볼 길이의 1/16이며, 전송 채널의 대역폭은 7MHz이고,상기 데이터 프레임은 데이터 심볼 단위가 6개로 구성된 서브 프레임(sub-frame)들로만 구성되는 것을 특징으로 하는 데이터 송수신 방법.
- 데이터 송수신 장치에 있어서,하향링크 및 상향링크를 통하여 데이터를 송수신 하는 송수신기, 및데이터 심볼이 n개로 구성된 적어도 하나 이상의 서브 프레임(sub-frame)을 포함하는 데이터 프레임(frame)을 설정하고, 상기 설정된 데이터 프레임을 통해서 데이터를 송수신하도록 상기 송수신기를 제어하는 제어기를 포함하며,상기 제어기는 상기 서브 프레임(sub-frame)의 개수가 최대가 되도록 상기 데이터 프레임을 구성하는 것을 특징으로 하는 데이터 송수신 장치.
- 제 19항에 있어서, 상기 데이터 프레임은,순환 전치부(CP)는 유효 OFDM 심볼 길이의 1/16이며,전송 채널의 대역폭은 7MHz이며,상기 서브 프레임의 데이터 심볼 단위 n은 6인 것을 특징으로 하는 데이터 송수신 장치.
- 제 19항에 있어서,상기 데이터 송수신 장치는 OFDM(Orthogonal Frequency Division Multiplexing) 또는 OFDMA(Orthogonal Frequency Division Multiplexing Access) 방식을 지원하며, 상기 하향링크와 상향링크는 상호 시간으로 구분되는 시분할 다중화(TDD: Time Division Duplex) 방식 또는 상호 주파수로 구분되는 주파수분할 다중화(FDD: Frequency Division Duplex)인 것을 특징으로 하는 데이터 송수신 장치.
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KR1020090078413A KR101658548B1 (ko) | 2008-12-30 | 2009-08-24 | 데이터 프레임을 이용한 데이터 송수신 방법 및 장치 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9479295B2 (en) | 2012-08-03 | 2016-10-25 | Alcatel Lucent | Method of implementing automatically retransmission feedback in a UE in a carrier aggregation network |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8503420B2 (en) * | 2008-12-31 | 2013-08-06 | Mediatek Inc. | Physical structure and design of sounding channel in OFDMA systems |
US8811300B2 (en) * | 2008-12-31 | 2014-08-19 | Mediatek Inc. | Physical structure and sequence design of midamble in OFDMA systems |
KR101651682B1 (ko) * | 2010-02-16 | 2016-08-26 | 삼성전자주식회사 | 다중 반송파를 사용하는 이동 통신 시스템에서 반송파 컴퍼넌트를 통해 데이터를 송수신하는 방법 및 장치 |
US9107077B2 (en) * | 2010-07-23 | 2015-08-11 | Broadcom Corporation | Method and system for time synchronization of WiMAX and LTE-TDD networks |
EP3119025A4 (en) * | 2014-03-13 | 2017-10-25 | LG Electronics Inc. | Method for transmitting and receiving signal for low latency in wireless communication system and apparatus therefor |
US9577729B2 (en) * | 2014-05-07 | 2017-02-21 | National Instruments Corporation | Synchronization of large antenna count systems |
WO2016163623A1 (ko) * | 2015-04-08 | 2016-10-13 | 엘지전자(주) | 무선 통신 시스템에서 데이터를 송수신하기 위한 방법 및 이를 위한 장치 |
US10903951B2 (en) * | 2015-06-05 | 2021-01-26 | Futurewei Technologies, Inc. | Systems and methods for adaptive pilot allocation |
DE102015116250B4 (de) * | 2015-09-25 | 2021-12-30 | Apple Inc. | Verfahren zum Durchführen von Mobilkommunikationen zwischen mobilen Endgeräten, Basisstationen und Netzsteuerungsvorrichtungen |
FR3088789B1 (fr) * | 2018-11-16 | 2021-08-06 | Blade | Protocole de transmission d’un flux de donnees transitant entre un ordinateur hote et un client distant |
CN115277286B (zh) * | 2022-06-10 | 2023-12-12 | 智己汽车科技有限公司 | 一种can总线通信方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100821843B1 (ko) * | 2004-08-27 | 2008-04-11 | 주식회사 케이티 | 휴대 인터넷에서 중계기 사용을 위해 ofdma 심볼에포스트픽스를 삽입하는 방법과 그를 이용한 휴대 인터넷프레임 구조 구현 방법 |
Family Cites Families (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100691419B1 (ko) | 2001-02-09 | 2007-03-09 | 삼성전자주식회사 | 무선 통신기기 및 그 통신방법 및 이를 적용한 무선통신시스템 |
CN100512066C (zh) | 2001-11-29 | 2009-07-08 | 美商内数位科技公司 | 于小区搜寻中使用主要及次要同步码的系统及方法 |
US20040081131A1 (en) | 2002-10-25 | 2004-04-29 | Walton Jay Rod | OFDM communication system with multiple OFDM symbol sizes |
KR100532422B1 (ko) | 2003-02-28 | 2005-11-30 | 삼성전자주식회사 | 동일 심볼을 다수의 채널에 중복적으로 전송하여 통신거리를 확장시킨 무선 랜 시스템의 직교 주파수 분할다중화 송수신 장치 및 그 송수신 방법 |
JP4291674B2 (ja) | 2003-11-11 | 2009-07-08 | 株式会社エヌ・ティ・ティ・ドコモ | Ofdm送信機及びofdm受信機 |
KR100827105B1 (ko) * | 2004-02-13 | 2008-05-02 | 삼성전자주식회사 | 광대역 무선 통신 시스템에서 고속 레인징을 통한 빠른핸드오버 수행 방법 및 장치 |
KR20050088817A (ko) | 2004-03-03 | 2005-09-07 | 삼성전자주식회사 | 광대역 무선 접속 통신 시스템에서 이동 가입자 단말기의핸드오버에 따른 네트워크 재진입 시스템 및 방법 |
US20050259629A1 (en) | 2004-05-24 | 2005-11-24 | Neal Oliver | Adapting uplink/downlink subframe ratio in time division duplex physical frames |
WO2006000091A1 (en) | 2004-06-24 | 2006-01-05 | Nortel Networks Limited | Preambles in ofdma system |
US7813330B2 (en) | 2004-12-03 | 2010-10-12 | Samsung Electronics Co., Ltd | Gap filler apparatus and method for providing cyclic delay diversity in a digital multimedia broadcasting system, and broadcasting relay network using the same |
US7827225B2 (en) | 2005-01-21 | 2010-11-02 | Texas Instruments Incorporated | Methods and systems for a multi-channel Fast Fourier Transform (FFT) |
US20070058595A1 (en) | 2005-03-30 | 2007-03-15 | Motorola, Inc. | Method and apparatus for reducing round trip latency and overhead within a communication system |
US7466985B1 (en) * | 2005-09-30 | 2008-12-16 | Nortel Networks Limited | Network element for implementing scheduled high-power PTP and low-power PTMP transmissions |
CN1964222B (zh) | 2005-11-11 | 2014-11-05 | 华为技术有限公司 | 无线中转通信系统及方法 |
KR20080072637A (ko) * | 2005-11-07 | 2008-08-06 | 톰슨 라이센싱 | Ofdm 네트워크에서 동적 주파수 선택을 위한 장치 및방법 |
KR100779092B1 (ko) * | 2005-11-10 | 2007-11-27 | 한국전자통신연구원 | Ofdm 셀룰러 시스템에서의 셀 탐색 방법, 순방향 링크프레임 전송 방법 및 이를 이용하는 장치 및 순방향 링크프레임 구조 |
KR100961743B1 (ko) | 2005-12-09 | 2010-06-07 | 삼성전자주식회사 | 다중 홉 중계방식의 광대역 무선 접속통신시스템에서 중계서비스를 지원하기 위한 장치 및 방법 |
JP4382850B2 (ja) | 2005-12-15 | 2009-12-16 | 富士通株式会社 | 移動通信システムにおける送信処理方法及び基地局 |
WO2007074525A1 (ja) | 2005-12-27 | 2007-07-05 | Fujitsu Limited | 無線通信方法並びに送信機及び受信機 |
KR100821275B1 (ko) * | 2006-01-04 | 2008-04-11 | 한국전자통신연구원 | 하향링크 신호를 생성하는 방법, 그리고 셀 탐색을수행하는 방법 |
CN101005304A (zh) | 2006-01-16 | 2007-07-25 | 北京三星通信技术研究有限公司 | 无线通信系统中小区搜索的设备和方法 |
RU2304357C1 (ru) | 2006-01-17 | 2007-08-10 | Самсунг Электроникс Ко., Лтд. | Способ адаптивной передачи данных в беспроводной сети по стандарту ieee 802.16 |
CN101009512A (zh) | 2006-01-24 | 2007-08-01 | 华为技术有限公司 | 无线中转通信正交频分复用接入系统及方法 |
US7706249B2 (en) * | 2006-02-08 | 2010-04-27 | Motorola, Inc. | Method and apparatus for a synchronization channel in an OFDMA system |
CN101026468A (zh) | 2006-02-20 | 2007-08-29 | 华为技术有限公司 | 一种业务数据的传输方法及装置 |
EP2002565A4 (en) | 2006-03-31 | 2012-07-04 | Qualcomm Inc | IMPROVED PHYSICAL LAYER REPEATER FOR OPERATION IN WIMAX SYSTEMS |
KR20070105558A (ko) | 2006-04-26 | 2007-10-31 | 삼성전자주식회사 | 직교 주파수 분할 다중 접속 기반 셀룰러무선통신시스템에서 공통제어채널의 수신 성능 향상을 위한방법 및 장치 |
EP1855428A3 (en) | 2006-05-11 | 2011-04-13 | Samsung Electronics Co., Ltd. | Apparatus and method for providing relay link zone information in a multi-hop relay broadband wireless access communication system |
US7613104B2 (en) | 2006-05-31 | 2009-11-03 | Nokia Corporation | Method, apparatus and computer program product providing synchronization for OFDMA downlink signal |
KR101002800B1 (ko) | 2006-06-09 | 2010-12-21 | 삼성전자주식회사 | 무선 이동 통신 시스템에서 공통 제어 정보 송신 방법 |
CA2655260A1 (en) | 2006-06-15 | 2007-12-21 | Fujitsu Limited | Radio communication system |
US8175032B2 (en) | 2006-09-08 | 2012-05-08 | Clearwire Ip Holdings Llc | System and method for radio frequency resource allocation |
US20080075032A1 (en) | 2006-09-22 | 2008-03-27 | Krishna Balachandran | Method of resource allocation in a wireless communication system |
KR100943619B1 (ko) * | 2006-10-02 | 2010-02-24 | 삼성전자주식회사 | 확장성 대역폭을 지원하는 셀룰러 무선통신시스템을 위한 하향링크 동기채널의 송수신 방법 및 장치 |
CN101542942B (zh) | 2006-10-17 | 2013-12-18 | 英特尔公司 | 用于在宽带无线接入网中划分通信信号并形成帧的装置、系统和方法 |
US7843870B2 (en) | 2006-11-07 | 2010-11-30 | Clear Wireless Llc | Systems and methods of supporting multiple wireless communication technologies |
US8077694B2 (en) * | 2006-11-28 | 2011-12-13 | Motorola Mobility, Inc. | Intelligent scheduling in a time division duplexing system to mitigate near/far interference scenarios |
US20080130620A1 (en) | 2006-11-30 | 2008-06-05 | Motorola, Inc. | Method and system for collision avoidance |
US8233398B2 (en) | 2007-01-08 | 2012-07-31 | Samsung Electronics Co., Ltd | Apparatus and method for transmitting frame information in multi-hop relay broadband wireless access communication system |
KR100922949B1 (ko) | 2007-01-26 | 2009-10-22 | 삼성전자주식회사 | 통신 시스템에서 신호 수신 방법 및 그 시스템 |
US8331286B2 (en) | 2007-08-03 | 2012-12-11 | Qualcomm Incorporated | Method and apparatus for efficient selection and acquisition of systems utilizing OFDM or SC-FDM |
US20090109890A1 (en) | 2007-10-19 | 2009-04-30 | Jerry Chow | Enhanced wimax mbs service on separate carrier frequency |
US7924803B2 (en) | 2007-11-09 | 2011-04-12 | Mitsubishi Electric Research Labs, Inc. | Antenna selection for mobile stations in OFDMA networks |
EP2215756A2 (en) * | 2007-11-09 | 2010-08-11 | ZTE U.S.A., Inc. | Flexible ofdm/ofdma frame structure for communication systems |
US8605569B2 (en) | 2008-01-15 | 2013-12-10 | Zte (Usa) Inc. | Methods for superframe/frame overhead reduction within OFDMA-based communication systems |
US20090185483A1 (en) | 2008-01-19 | 2009-07-23 | Futurewei Technologies, Inc. | Method and Apparatus for Transmitting Data and Error Recovery |
US8059676B2 (en) | 2008-02-17 | 2011-11-15 | Lg Electronics Inc. | Method of communication using frame |
US8724525B2 (en) * | 2008-09-04 | 2014-05-13 | Nokia Siemens Networks Oy | Frame synchronization using bidirectional transit and receive zones |
-
2009
- 2009-12-21 WO PCT/KR2009/007646 patent/WO2010074472A2/ko active Application Filing
- 2009-12-21 US US13/141,313 patent/US9154273B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100821843B1 (ko) * | 2004-08-27 | 2008-04-11 | 주식회사 케이티 | 휴대 인터넷에서 중계기 사용을 위해 ofdma 심볼에포스트픽스를 삽입하는 방법과 그를 이용한 휴대 인터넷프레임 구조 구현 방법 |
Non-Patent Citations (2)
Title |
---|
JIM ZYREN ET AL.: 'Overview of the 3GPP Long Term Evolution Physical Layer' FREESCALE SEMICONDUCTOR July 2007, pages 8 - 10 * |
X. ZHUANG ET AL.: 'Ranging Improvement for 802.16e OFDMA PHY' IEEE C802.16E-04/143RL 07 July 2007, * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9479295B2 (en) | 2012-08-03 | 2016-10-25 | Alcatel Lucent | Method of implementing automatically retransmission feedback in a UE in a carrier aggregation network |
CN103580824B (zh) * | 2012-08-03 | 2016-12-21 | 上海贝尔股份有限公司 | 载波汇聚网络中的用户设备里进行自动重传反馈的方法 |
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