WO2011115347A1 - Architecture et procédé pour nœud relais rf, pour l'agrégation de porteuses - Google Patents

Architecture et procédé pour nœud relais rf, pour l'agrégation de porteuses Download PDF

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Publication number
WO2011115347A1
WO2011115347A1 PCT/KR2010/007588 KR2010007588W WO2011115347A1 WO 2011115347 A1 WO2011115347 A1 WO 2011115347A1 KR 2010007588 W KR2010007588 W KR 2010007588W WO 2011115347 A1 WO2011115347 A1 WO 2011115347A1
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WO
WIPO (PCT)
Prior art keywords
relay node
mhz
chains
link
backhaul link
Prior art date
Application number
PCT/KR2010/007588
Other languages
English (en)
Inventor
Yoon Oh Yang
Su Hwan Lim
Man Young Jung
Sang Wook Lee
Original Assignee
Lg Electronics Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020100080240A external-priority patent/KR101703863B1/ko
Application filed by Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to US13/578,483 priority Critical patent/US9001727B2/en
Publication of WO2011115347A1 publication Critical patent/WO2011115347A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

Definitions

  • FIG. 4 and FIG. 5 are diagrams illustrating various transmission scenarios where a relay node transmits a signal through a backhaul link and an access link;
  • FIG. 10 and FIG. 11 are diagrams illustrating an example of an RF architecture in an existing relay node and a method for transmitting a signal using the architecture
  • FIG. 16 is a diagram illustrating an RF architecture and a method for transmitting a signal using the architecture in accordance with another embodiment of the present invention.
  • the embodiments of the present invention can be used for various wireless access technologies such as CDMA, FDMA, TDMA, OFDMA, SC-FDMA, and MC-FDMA.
  • the CDMA can be implemented by wireless technology such as universal terrestrial radio access (UTRA) or CDMA2000.
  • the TDMA can be implemented by wireless technology such as global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for GSM evolution (EDGE).
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • EDGE enhanced data rates for GSM evolution
  • OFDMA can be implemented by wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and evolved UTRA (E-UTRA).
  • the UTRA is a part of a universal mobile telecommunications system (UMTS).
  • UMTS universal mobile telecommunications system
  • 3GPP LTE 3rd generation partnership project long term evolution
  • E-UMTS evolved UMTS
  • LTE-advanced (LTE-A) is an evolved version of the 3GPP LTE.
  • the base station transmits downlink (DL) scheduling information of downlink data to a corresponding user equipment to notify the corresponding user equipment of time and frequency domains to which data will be transmitted and information related to encoding, data size, hybrid automatic repeat and request (HARQ). Also, the base station transmits uplink (UL) scheduling information of uplink data to the corresponding user equipment to notify the corresponding user equipment of time and frequency domains that can be used by the corresponding user equipment, and information related to encoding, data size, HARQ.
  • a Core Network (CN) may include the AG and a network node for user registration of the UE.
  • the AG manages mobility of a UE on a Tracking Area (TA) basis, wherein one TA includes a plurality of cells.
  • TA Tracking Area
  • FIG. 1 and 2 are diagrams illustrating a wireless communication system that includes a relay node.
  • the relay node extends a service zone of the base station or is installed in a shaded zone to provide seamless services.
  • the wireless communication system includes a donor base station, a relay node, and a user equipment.
  • the user equipment performs communication with the base station or the relay node.
  • the user equipment that performs communication with the base station will be referred to as a macro user equipment (UE), and the user equipment that performs communication with the relay node will be referred to as a relay user equipment.
  • UE macro user equipment
  • RN Fixed relay node
  • Nomadic RN installed temporarily when users increase, or movable randomly within buildings.
  • a network-to-relay link and a network-to-user equipment link share the same frequency band within a donor cell.
  • Non-transparent relay node the user equipment knows that communication with the network is performed through the relay node.
  • FIG. 2 illustrates that the backhaul link is operated in accordance with the TDD mode and the access link is operated in accordance with the FDD mode.
  • the carrier frequency of the backhaul link and the carrier frequency of the access link are in the following correlation.
  • the relay node illustrated in FIG. 2 will be referred to as B type relay node.
  • FIG. 3 is a block diagram illustrating a transmitter and a receiver for OFDMA and SC-FDMA.
  • transmitters 302 to 314 are parts of the user equipment
  • receivers 316 to 330 are parts of the base station.
  • the transmitters are parts of the base station
  • the receivers are parts of the user equipment.
  • an OFDMA transmitter includes a serial to parallel converter 302, a sub-carrier mapping module 306, an M-point inverse discrete fourier transform (IDFT) module 308, a cyclic prefix (CP) addition module 310, a parallel to serial converter 312, and a radio frequency (RF)/digital to analog converter (DAC) module 314.
  • IDFT M-point inverse discrete fourier transform
  • CP cyclic prefix
  • DAC radio frequency/digital to analog converter
  • bit streams are modulated to data symbol sequences.
  • the bit streams correspond to codewords or transport blocks.
  • the data symbol sequences in series are converted to parallel data symbol sequences as much as N (302).
  • N number of data symbols are mapped with N number of subcarriers allocated among a total of M number of subcarriers, and the other M-N number of carriers are padded with 0 (306).
  • the data symbols mapped in a frequency domain are converted to time domain sequences through M-point IDFT processing (308).
  • cyclic prefix is added to the time domain sequences to generate OFDMA symbols (310).
  • Scenario 5 relay node -> base station transmission in the backhaul link is performed. In other words, uplink transmission is only performed in the backhaul link.
  • Scenario 7 base station -> relay node transmission and relay node -> base station transmission in the access link are performed in the backhaul link at the same time.
  • B type relay node since the relay node is operated in the backhaul link in accordance with the TDD mode, it cannot perform communication with the base station in accordance with a full duplex mode at a random time.
  • FIG. 6 is a diagram illustrating an example of communication using multiple component carriers (CC) under the carrier aggregation (CA) status.
  • FIG. 6 corresponds to a communication example in the LTE-A system.
  • the LTE-A system uses carrier aggregation or bandwidth aggregation where a plurality of uplink/downlink frequency blocks are collected to use broader frequency bandwidths, thereby using greater uplink/downlink bandwidths.
  • Each frequency block is transmitted using a component carrier (CC).
  • the CC may mean a frequency block for carrier aggregation or a center carrier of a frequency block depending on the context, wherein the frequency block and the center carrier are used together.
  • FIG. 7 to FIG. 9 illustrate location relation of a frequency band based on a type of CA.
  • each box illustrates an operating band used for uplink transmission or downlink transmission (see E-UTRA operating band of Table 1).
  • f UL1 and f DL1 represent an uplink carrier frequency and a downlink carrier frequency of the first component carrier (CC), respectively.
  • f UL2 and f DL2 represent an uplink carrier frequency and a downlink carrier frequency of the second component carrier (CC), respectively.
  • FIG. 10 to FIG. 13 are diagrams illustrating an example of an RF architecture in an existing relay node and a method for transmitting a signal using the architecture.
  • the RF architecture as shown has been used depending on the relay type (for example, type A or type B) illustrated in FIG. 1 and FIG. 2 and the CA type illustrated in FIG. 7 to FIG. 9.
  • the RF architecture includes an RF transmit chain and an RF receive chain.
  • the RF transmit chain includes a digital-to-analog converter (DAC), mixers 1002 to 1008 for frequency uplink conversion, a power amplifier (PA), a duplexer and a diplexer.
  • the DAC converts a digital signal to an analog signal in a base band.
  • FIG. 10 and FIG. 11 illustrate an RF architecture of A type relay node (RN).
  • the A type relay node is operated in both the backhaul link and the access link in accordance with the FDD mode.
  • f UL1 and f DL1 represent an uplink carrier frequency and a downlink carrier frequency of the first component carrier (CC), respectively.
  • f UL2 and f DL2 represent an uplink carrier frequency and a downlink carrier frequency of the second component carrier (CC), respectively.
  • FIG. 10 illustrates that a plurality of CCs (for example, two CCs) exist in different operating bands (inter-band CA).
  • the relay node includes RF transmit/receive chains for each of carrier frequencies f UL1 , f UL2 , f DL1 , f DL2 .
  • the relay node further includes a duplexer to distinguish uplink carrier frequencies f UL1 /f UL2 from downlink carrier frequencies f DL1 /f DL2 in the FDD mode.
  • the relay node further includes a diplexer to distinguish the respective operating bands from each other. The diplexer may be replaced with an antenna connected to the duplexer 1 and the duplexer 2, respectively.
  • f UL1 is used to allow the relay node to receive a signal from the user equipment through the access link or transmit the signal to the base station through the backhaul link.
  • f DL1 is used to allow the relay node to transmit a signal to the user equipment through the access link or receive the signal from the base station through the backhaul link.
  • f UL2 and f DL2 are used similarly. In FIG. 15 to FIG. 18, the following terminologies are used.
  • FIG. 17 is a diagram illustrating an RF architecture and a method for transmitting a signal using the architecture in accordance with still another embodiment of the present invention.
  • This embodiment suggests an example that RF components are shared in the inter-band non-contiguous CA illustrated in FIG. 14.
  • the RF architecture of FIG. 17 is basically similar to that of FIG. 16.
  • the RF architecture of FIG. 17 is based on the inter-band CA status, it further includes a diplexer (i.e., filter) for distinguishing the respective operating bands from each other, as compared with the RF architecture of FIG. 16.
  • the diplexer may be replaced with an antenna connected to the duplexer 1 and the duplexer 2, respectively.
  • FIG. 20 is a diagram illustrating a base station, a relay node and a user equipment, which can be applied to the embodiment of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un système de communication sans fil comprenant un nœud relais. Le nœud relais supportant l'agrégation des porteuses (CA) comprend une première antenne destinée à réaliser une communication avec une station de base via une liaison terrestre ; une pluralité de chaînes de fréquence radio de liaison terrestre connectées à la première antenne, afin d'émettre et de recevoir un signal radio pour une transmission sur liaison terrestre ; une seconde antenne destinée à réaliser une communication avec un équipement d'utilisateur sur une liaison d'accès ; une pluralité d'unités RF de liaison d'accès, connectées à la seconde antenne, afin d'émettre et de recevoir un signal radio pour la transmission sur la liaison d'accès ; et une unité de commande qui commande la pluralité de chaînes RF de liaison terrestre et la pluralité de chaînes RF de liaison d'accès, afin de partager au moins une partie des composantes RF entre les chaînes RF de liaison terrestre et les chaînes RF de liaison d'accès.
PCT/KR2010/007588 2010-03-17 2010-11-01 Architecture et procédé pour nœud relais rf, pour l'agrégation de porteuses WO2011115347A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/578,483 US9001727B2 (en) 2010-03-17 2010-11-01 Architecture and method of relay node RF for carrier aggregation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US31458510P 2010-03-17 2010-03-17
US61/314,585 2010-03-17
KR10-2010-0080240 2010-08-19
KR1020100080240A KR101703863B1 (ko) 2010-03-17 2010-08-19 반송파 집성을 위한 릴레이 rf의 구조 및 방법

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015085533A1 (fr) * 2013-12-12 2015-06-18 华为技术有限公司 Dispositif de liaison terrestre et procédé de commande de dispositif de liaison terrestre
US9877263B1 (en) 2016-05-14 2018-01-23 Sprint Communications Company L.P. Carrier aggregation (CA) for user equipment (UE) and wireless relays
CN110268776A (zh) * 2017-02-13 2019-09-20 高通股份有限公司 用于处置宽带宽通信的技术
WO2020242690A1 (fr) * 2019-05-29 2020-12-03 Commscope Technologies Llc Nœud relais distribué
US12022448B2 (en) 2017-08-11 2024-06-25 Qualcomm Incorporated Carrier switching for multiple carriers using the same components of a component path

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080090575A1 (en) * 2006-07-13 2008-04-17 Oz Barak WiMAX ACCESS POINT NETWORK WITH BACKHAUL TECHNOLOGY
US20080240054A1 (en) * 2007-03-30 2008-10-02 Sumeet Sandhu Relay scheduling in wireless networks
US20100034135A1 (en) * 2008-08-06 2010-02-11 Lg Electronics Inc. Method and apparatus of communication using subframe between base station and relay

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080090575A1 (en) * 2006-07-13 2008-04-17 Oz Barak WiMAX ACCESS POINT NETWORK WITH BACKHAUL TECHNOLOGY
US20080240054A1 (en) * 2007-03-30 2008-10-02 Sumeet Sandhu Relay scheduling in wireless networks
US20100034135A1 (en) * 2008-08-06 2010-02-11 Lg Electronics Inc. Method and apparatus of communication using subframe between base station and relay

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10348390B2 (en) 2013-12-12 2019-07-09 Huawei Technologies Co., Ltd. Backhaul device and backhaul device control method
CN105264789A (zh) * 2013-12-12 2016-01-20 华为技术有限公司 回传设备和回传设备控制方法
US20160294466A1 (en) * 2013-12-12 2016-10-06 Huawei Technologies Co., Ltd. Backhaul device and backhaul device control method
JP2017505568A (ja) * 2013-12-12 2017-02-16 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． バックホールデバイスおよびバックホールデバイス制御方法
WO2015085533A1 (fr) * 2013-12-12 2015-06-18 华为技术有限公司 Dispositif de liaison terrestre et procédé de commande de dispositif de liaison terrestre
US9877263B1 (en) 2016-05-14 2018-01-23 Sprint Communications Company L.P. Carrier aggregation (CA) for user equipment (UE) and wireless relays
US10313955B2 (en) 2016-05-14 2019-06-04 Sprint Communications Company L.P. Carrier aggregation (CA) for user equipment (UE) and wireless relays
CN110268776A (zh) * 2017-02-13 2019-09-20 高通股份有限公司 用于处置宽带宽通信的技术
CN110268776B (zh) * 2017-02-13 2023-07-25 高通股份有限公司 用于处置宽带宽通信的技术
US12022448B2 (en) 2017-08-11 2024-06-25 Qualcomm Incorporated Carrier switching for multiple carriers using the same components of a component path
US11412392B2 (en) 2019-05-29 2022-08-09 Commscope Technologies Llc Distributed relay node
WO2020242691A1 (fr) * 2019-05-29 2020-12-03 Commscope Technologies Llc Système d'antennes distribuées à relais intégré
WO2020242690A1 (fr) * 2019-05-29 2020-12-03 Commscope Technologies Llc Nœud relais distribué
US11540143B2 (en) 2019-05-29 2022-12-27 Commscope Technologies Llc Integrated relay distributed antenna system

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