JP5387687B2 - 改良されたチャネル品質指標の方法 - Google Patents
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- H—ELECTRICITY
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
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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
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- H—ELECTRICITY
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- 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
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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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
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
- H04L5/0035—Resource allocation in a cooperative multipoint environment
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- 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
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
- H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
- H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
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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
- H04L5/0014—Three-dimensional division
- H04L5/0016—Time-frequency-code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
Description
1つまたは2つ以上のチャネル品質指標に対応している1つまたは2つ以上の基準信号を生成するステップと、
1つまたは2つ以上のチャネル品質指標基準信号を1つまたは2つ以上のサブフレームの第2のスロットの最後のシンボルにマッピングするステップと、
を有する。
図2は、2つの通常サイクリックプレフィックス(CP)リソースブロック205、210を有しているサブフレーム200と、周波数分割多重化による多重化のための複数のレイヤについてのCQI−RSの好ましい位置とをさらに示している。図1Aおよび1Bのように、サブフレーム200を周波数(f)軸と時間(t)軸と一緒に示している。リソースブロック205、210は、時間(t)に対しては、1スロット230、235幅を有し、周波数(f)に対しては、12サブキャリヤ幅を有する送信単位である。2つのスロット230、235の各々には、通常サイクリックプレフィックスリソースブロック205、210について、時間軸に沿った7つのシンボルが含まれている。多数のリソース要素が、第1のLTE−A CQI−RS 240(レイヤ1)、第2のLTE−A CQI−RS 245(レイヤ1)、第1のLTE−A CQI−RS 250(レイヤ2)、第2のLTE−A CQI−RS 255(レイヤ2)、第1のLTE−A CQI−RS 260(レイヤ3)、第2のLTE−A CQI−RS 265(レイヤ3)、第1のLTE−A CQI−RS 270(レイヤ4)、第2のLTE−A CQI−RS 275(レイヤ4)と共に複数のセル固有基準信号(CRS)225を有しているリソースブロック205、210を構成している。
(LTE−AについてのみのCQI−RSの送信周期構成)
図5は、セル固有のサブフレームオフセットSFoffset 510とCQI−RS送信周期、TCQI-RS 505との使用を示している一連のサブフレーム500の模式図である。TCQI-RS 505は、LTE Rel−8についてのCQI/PMI報告周期と同じ、つまり、周波数分割2重化(FDD)については、2ms、5ms、10ms、40ms、80ms、および160msであり、時間分割2重化(TDD)については、1ms、5ms、10ms、40ms、80ms、および160msである。しかし、TCQI-RS 505はセル固有であるのに対して、CQI/PMI報告周期はUE固有であり、TCQI−RS 505の構成とCQI/PMI報告周期とは独立している。実際には、CQI/PMI報告周期は一般的にはTCQI-RS 505以上である。
(LTE−AについてのみのCQI−RS用のリソースブロック割り当て)
kと表記されることもあるCQI−RS副帯域は、LTE Rel−8用のCQI報告副帯域と同様に定義される。CQI−RS副帯域サイズつまりCQI−RSを有しているリソースブロックの総数は、LTE Rel−8についてのCQI報告副帯域サイズと同様に、1つのコンポーネントキャリヤについての装置帯域に基づいて求めることができる。具体的には、CQI−RS副帯域サイズは、表1に示しているように求められる。
Claims (16)
- チャネル品質指標を計測するために対応するユーザ装置がチャネル品質指標基準信号を使用できるように、1つまたは2つ以上のサブフレームから1つまたは2つ以上の前記チャネル品質指標基準信号を求め送信する改良されたチャネル品質指標の方法であって、1つまたは2つ以上の前記サブフレームは第1と第2のスロットを有しており、前記第1と第2のスロットの各々は複数のシンボルを有しており、前記第1と第2のスロットの各々はリソースブロックを構成し、該方法は、
1つまたは2つ以上の前記チャネル品質指標に対応している1つまたは2つ以上の基準信号を生成するステップと、
1つまたは2つ以上の前記チャネル品質指標基準信号を1つまたは2つ以上の前記サブフレームの前記第2のスロットの最後の前記シンボルにマッピングするステップと、
を有する、
改良されたチャネル品質指標の方法。 - 前記マッピングするステップの前に、前記リソースブロック内の最下位のサブキャリヤインデックスからの複数の前記チャネル品質指標基準信号用の1つまたは2つ以上のサブキャリヤ周波数オフセットを提供するステップを有する、請求項1に記載の改良されたチャネル品質指標の方法。
- 前記サブキャリヤ周波数オフセットは0から5の範囲の整数である、請求項2に記載の改良されたチャネル品質指標の方法。
- 2つの前記チャネル品質指標基準信号が前記リソースブロック内に含められている、請求項1に記載の改良されたチャネル品質指標の方法。
- 2つの前記チャネル品質指標基準信号は前記リソースブロックに関連付けられている複数のサブキャリヤにわたって一様に分散している、請求項4に記載の改良されたチャネル品質指標の方法。
- 協調しているマルチポイントセルが同じ前記リソースブロック内で送信し、
前記マッピングするステップの前に、第1の協調マルチポイントセル用の第1のサブキャリヤ周波数オフセットと、さらなる協調マルチポイントセル用の第2のサブキャリヤ周波数オフセットとを提供するステップをさらに有する、請求項1から5のいずれかに記載の改良されたチャネル品質指標の方法。 - 前記チャネル品質指標基準信号に送信周期TCQI−RSを提供するステップをさらに有する、請求項1ら6のいずれかに記載の改良されたチャネル品質指標の方法。
- TCQI−RSはCQI/PMI報告周期に等しい、請求項7に記載の改良されたチャネル品質指標の方法。
- 周波数分割2重化に対して、前記CQI/PMI報告周期は2ms、5ms、10ms、20ms、40ms、80ms、および160msのいずれかである、請求項8に記載の改良されたチャネル品質指標の方法。
- 時分割2重化に対して、前記CQI/PMI報告周期は1ms、5ms、10ms、20ms、40ms、80ms、および160msのいずれかである、請求項8に記載の改良されたチャネル品質指標の方法。
- 上位レイヤが設定するサブフレームオフセットを提供するステップをさらに有し、前記チャネル品質指標基準信号の送信のための前記サブフレームオフセットはフレーム内のサブフレーム0に相対的である、請求項1から10のいずれかに記載の改良のチャネル品質指標の方法。
- 前記サブフレームオフセットは、0msから(TCQI-RS−1)msまでの値をとる、請求項11に記載の改良されたチャネル品質指標の方法。
- 複数の前記チャネル品質指標基準信号を含んでいる前記リソースブロックの総数を求めるステップと、
1つのコンポーネントキャリヤに対するシステム帯域幅に基づいて複数の前記チャネル品質指標基準信号を含んでいる前記リソースブロックの総数を求めるステップと、
をさらに有し、前記チャネル品質指標基準信号を含んでいる前記リソースブロックの位置はパラメータRBoffsetによって求められる、請求項1から12のいずれかに記載の改良のチャネル品質指標の方法。 - 前記RBoffsetは0からk−1の範囲であって、kはチャネル品質指標基準信号副帯域サイズである、請求項13に記載の改良されたチャネル品質指標の方法。
- 前記RBoffsetは上位レイヤによって設定される、請求項14に記載の改良されたチャネル品質指標の方法。
- 前記RBoffsetはサブフレーム番号が増加するにつれて前記副帯域内で第1の前記リソースブロックから最後の前記リソースブロックまで循環させることによって構成されている、請求項14に記載の改良されたチャネル品質指標の方法。
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AU2009901196A AU2009901196A0 (en) | 2009-03-19 | Improved channel quality indicator method | |
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PCT/JP2010/055144 WO2010107129A1 (en) | 2009-03-19 | 2010-03-17 | Improved channel quality indicator method |
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KR (3) | KR101319205B1 (ja) |
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CA (2) | CA2755751C (ja) |
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US9647810B2 (en) * | 2009-03-17 | 2017-05-09 | Samsung Electronics Co., Ltd. | Method and system for mapping pilot signals in multi-stream transmissions |
CN101997809B (zh) | 2009-08-18 | 2013-09-11 | 中兴通讯股份有限公司 | 信道测量导频发送方法和系统 |
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