WO2019138527A1 - ユーザ端末及び無線通信方法 - Google Patents
ユーザ端末及び無線通信方法 Download PDFInfo
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- WO2019138527A1 WO2019138527A1 PCT/JP2018/000567 JP2018000567W WO2019138527A1 WO 2019138527 A1 WO2019138527 A1 WO 2019138527A1 JP 2018000567 W JP2018000567 W JP 2018000567W WO 2019138527 A1 WO2019138527 A1 WO 2019138527A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
-
- 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
- H04L5/0048—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
- H04L5/0078—Timing of allocation
- H04L5/0082—Timing of allocation at predetermined intervals
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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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
- H04L5/02—Channels characterised by the type of signal
- H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
- H04L5/10—Channels characterised by the type of signal the signals being represented by different frequencies with dynamo-electric generation of carriers; with mechanical filters or demodulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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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
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
-
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the user terminal In a future radio communication system (for example, NR, 5G, 5G + or Rel. 15 or later), the user terminal is determined based on information (QCL information) on pseudo colocation (QCL) of the downlink shared channel (for example, PDSCH). It is considered to control reception processing (for example, at least one of demapping, demodulation, and decoding) of the downlink shared channel.
- QCL information information on pseudo colocation (QCL) of the downlink shared channel (for example, PDSCH). It is considered to control reception processing (for example, at least one of demapping, demodulation, and decoding) of the downlink shared channel.
- QCL pseudo colocation
- FIG. 1 is a diagram showing an example of BWP and CORESET set in the user terminal.
- one or more BWPs BWPs # 1 and # 2 in FIG. 1 may be configured in a carrier set in the user terminal.
- one or more CORESETs (one CORESET per BWP in FIG. 1) may be set for each BWP.
- the field for CORESET #i indicates the TCI state # 3.
- the user terminal receives the PDCCH mapped to the predetermined resource unit in the CORESET based on the TCI state # 3 indicated by the field for the CORESET # i.
- the particular field indicates that a field for CORESET corresponding to a bit set (set) to “1” is included in MAC CE. That is, the particular field indicates that the TCI state for CORESET corresponding to the bit set (set) to 1 ′ ′ is designated in the MAC CE.
- the baseband signal processing unit 104 performs Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing, and error correction on user data included in the input upstream signal. Decoding, reception processing of MAC retransmission control, and reception processing of RLC layer and PDCP layer are performed, and are transferred to the higher station apparatus 30 via the transmission path interface 106.
- the call processing unit 105 performs call processing (setting, release, etc.) of the communication channel, state management of the radio base station 10, management of radio resources, and the like.
- the transmission path interface 106 transmits and receives signals to and from the higher station apparatus 30 via a predetermined interface. Also, the transmission path interface 106 transmits / receives signals (backhaul signaling) to / from the other wireless base station 10 via an inter-base station interface (for example, an optical fiber conforming to CPRI (Common Public Radio Interface), X2 interface). May be
- an inter-base station interface for example, an optical fiber conforming to CPRI (Common Public Radio Interface), X2 interface.
- the baseband signal processing unit 104 at least includes a control unit (scheduler) 301, a transmission signal generation unit 302, a mapping unit 303, a reception signal processing unit 304, and a measurement unit 305. Note that these configurations may be included in the wireless base station 10, and some or all of the configurations may not be included in the baseband signal processing unit 104.
- the control unit 301 indicates that the specific field indicates the number of the fields in the MAC CE. You may control based on the number of CORESET (2nd aspect).
- the transmission signal generation unit 302 generates, for example, DL assignment for notifying downlink data allocation information and / or UL grant for notifying uplink data allocation information, based on an instruction from the control unit 301.
- DL assignment and UL grant are both DCI and follow DCI format.
- coding processing, modulation processing, and the like are performed on the downlink data signal according to a coding rate, a modulation method, and the like determined based on channel state information (CSI: Channel State Information) and the like from each user terminal 20.
- CSI Channel State Information
- the measurement unit 305 performs measurement on the received signal.
- the measuring unit 305 can be configured from a measuring device, a measuring circuit, or a measuring device described based on the common recognition in the technical field according to the present disclosure.
- the baseband signal processing unit 204 performs reception processing of FFT processing, error correction decoding, retransmission control, and the like on the input baseband signal.
- the downlink user data is transferred to the application unit 205.
- the application unit 205 performs processing on a layer higher than the physical layer and the MAC layer. Moreover, broadcast information may also be transferred to the application unit 205 among downlink data.
- the term “device” can be read as a circuit, a device, a unit, or the like.
- the hardware configuration of the radio base station 10 and the user terminal 20 may be configured to include one or more of the devices illustrated in the figure, or may be configured without including some devices.
- the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via a wired and / or wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, or the like.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like to realize, for example, frequency division duplex (FDD) and / or time division duplex (TDD). It may be configured.
- FDD frequency division duplex
- TDD time division duplex
- the transmission / reception antenna 101 (201), the amplifier unit 102 (202), the transmission / reception unit 103 (203), the transmission path interface 106, and the like described above may be realized by the communication device 1004.
- the names used for parameters and the like in the present specification are not limited names in any respect.
- various channels PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.
- information elements can be identified by any suitable names, various assignments are made to these various channels and information elements.
- the name is not limited in any way.
- software, instructions, information, etc. may be sent and received via a transmission medium.
- software may use a wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and / or a wireless technology (infrared, microwave, etc.), a website, a server
- wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
Abstract
Description
将来の無線通信システム(例えば、NR、5G、5G+又はRel.15以降)では、ユーザ端末は、下り共有チャネル(例えば、PDSCH)の疑似コロケーション(QCL)に関する情報(QCL情報)に基づいて、当該下り共有チャネルの受信処理(例えば、デマッピング、復調、復号の少なくとも一つ)を制御することが検討されている。
・QCLタイプB:ドップラーシフト及びドップラースプレッドが同一であると仮定できるQCL
・QCLタイプC:平均遅延及びドップラーシフトが同一であると仮定できるQCL
・QCLタイプD:空間受信パラメータが同一であると仮定できるQCL
また、当該将来の無線通信システムでは、ユーザ端末は、下り制御チャネル(例えば、PDCCH)のQCLに関する情報(QCL情報)に基づいて、当該下り制御チャネルの受信処理を制御することが検討されている。
第1の態様では、MAC CEは、一以上のCORESETにそれぞれ対応する一以上のフィールドを含む。
第2の態様では、MAC CEは、どのCORESETのTCI状態が当該MAC CE内で指定されるかを示す特定のフィールドを含む点で、第1の態様と異なる。以下では、第1の態様との相違点を中心に説明する。
第3の態様では、MAC CEは、どのBWPのCORESETのTCI状態が当該MAC CE内で指定されるかを示す特定のフィールドを含む点で、第2の態様と異なる。以下では、第1及び第2の態様との相違点を中心に説明する。
一以上のCORESETのTCI状態を示すMAC CEに対して、独立のLCID(Logical Channel Identifier)が定義されてもよい。
以下、本実施の形態に係る無線通信システムの構成について説明する。この無線通信システムでは、上記複数の態様の少なくとも一つの組み合わせを用いて通信が行われる。
図8は、本実施の形態に係る無線基地局の全体構成の一例を示す図である。無線基地局10は、複数の送受信アンテナ101と、アンプ部102と、送受信部103と、ベースバンド信号処理部104と、呼処理部105と、伝送路インターフェース106と、を備えている。なお、送受信アンテナ101、アンプ部102、送受信部103は、それぞれ1つ以上を含むように構成されればよい。
図10は、本実施の形態に係るユーザ端末の全体構成の一例を示す図である。ユーザ端末20は、複数の送受信アンテナ201と、アンプ部202と、送受信部203と、ベースバンド信号処理部204と、アプリケーション部205と、を備えている。なお、送受信アンテナ201、アンプ部202、送受信部203は、それぞれ1つ以上を含むように構成されればよい。
なお、本実施の形態の説明に用いたブロック図は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及び/又はソフトウェアの任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的及び/又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的及び/又は論理的に分離した2つ以上の装置を直接的及び/又は間接的に(例えば、有線及び/又は無線を用いて)接続し、これら複数の装置を用いて実現されてもよい。
なお、本明細書において説明した用語及び/又は本明細書の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル及び/又はシンボルは信号(シグナリング)であってもよい。また、信号はメッセージであってもよい。参照信号は、RS(Reference Signal)と略称することもでき、適用される標準によってパイロット(Pilot)、パイロット信号などと呼ばれてもよい。また、コンポーネントキャリア(CC:Component Carrier)は、セル、周波数キャリア、キャリア周波数などと呼ばれてもよい。
Claims (6)
- 一以上の制御リソースセットにそれぞれ対応する一以上のフィールドを含むMAC(Medium Access Control)制御要素を受信する受信部と、
前記フィールドが示す前記制御リソースセットの送信構成指標(TCI)の状態に基づいて、前記制御リソースセット内の所定のリソース単位にマッピングされる下り制御チャネルの受信を制御する制御部と、
を具備することを特徴とするユーザ端末。 - 前記TCIの状態は、前記下り制御チャネル又は前記下り制御チャネルの復調用参照信号のアンテナポートと、下り参照信号との疑似コロケーション(QCL)に関する情報を示すことを特徴とする請求項1に記載のユーザ端末。
- 前記MAC制御要素内の前記フィールドの数は、前記ユーザ端末に対して設定された一以上の部分帯域内の前記制御リソースセットの総数、又は、前記設定された一以上の部分帯域のうちでアクティブ化された部分帯域内の前記制御リソースセットの総数に基づいて決定されることを特徴とする請求項1又は請求項2に記載のユーザ端末。
- 前記MAC制御要素は、どの制御リソースセットのTCIの状態が前記MAC制御要素内で指定されるかを示す特定のフィールドを含み、
前記MAC制御要素内の前記フィールドの数は、前記特定のフィールドが示す前記制御リソースセットの数に基づいて決定されることを特徴とする請求項1又は請求項2に記載のユーザ端末。 - 前記MAC制御要素は、どの部分帯域内の制御リソースセットのTCIの状態が前記MAC制御要素内で指定されるかを示す特定のフィールドを含み、
前記MAC制御要素内の前記フィールドの数は、前記特定のフィールドが示す前記部分帯域に関連付けられる前記制御リソースセットの数に基づいて決定されることを特徴とする請求項1又は請求項2に記載のユーザ端末。 - ユーザ端末において、
一以上の制御リソースセットにそれぞれ対応する一以上のフィールドを含むMACMedium Access Control)制御要素を受信する工程と、
前記フィールドが示す前記制御リソースセットの送信構成指標(TCI)の状態に基づいて、前記制御リソースセット内の所定のリソース単位にマッピングされる下り制御チャネルの受信を制御する工程と、
を有することを特徴とする無線通信方法。
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EP18900435.1A EP3739998B1 (en) | 2018-01-12 | 2018-01-12 | User terminal and wireless communication method |
JP2019564231A JPWO2019138527A1 (ja) | 2018-01-12 | 2018-01-12 | ユーザ端末及び無線通信方法 |
PCT/JP2018/000567 WO2019138527A1 (ja) | 2018-01-12 | 2018-01-12 | ユーザ端末及び無線通信方法 |
US16/961,435 US11432365B2 (en) | 2018-01-12 | 2018-01-12 | User terminal and radio communication method |
CN201880090655.9A CN111801972A (zh) | 2018-01-12 | 2018-01-12 | 用户终端以及无线通信方法 |
AU2018402168A AU2018402168B2 (en) | 2018-01-12 | 2018-01-12 | User terminal and radio communication method |
JP2022157545A JP7407256B2 (ja) | 2018-01-12 | 2022-09-30 | 端末、無線通信方法、基地局及びシステム |
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CN114556999A (zh) * | 2019-08-15 | 2022-05-27 | 株式会社Ntt都科摩 | 终端以及无线通信方法 |
CN114556999B (zh) * | 2019-08-15 | 2024-02-23 | 株式会社Ntt都科摩 | 终端以及无线通信方法 |
CN113472408A (zh) * | 2020-03-31 | 2021-10-01 | 北京紫光展锐通信技术有限公司 | 信息收发方法及装置、存储介质、终端 |
CN113472408B (zh) * | 2020-03-31 | 2022-09-02 | 北京紫光展锐通信技术有限公司 | 信息收发方法及装置、存储介质、终端 |
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