DL - 4G Americas

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Scenario A Intra-Band Adjacent Scenario B Intra-Band Non-Adjacent Scenario C Inter-Band UL UL UL UL UL UL Network A Network A Network A Network A EUTRA – FDD UL Band j Network A Network A EUTRA – FDD UL Band j Network B Network A Network C Network C EUTRA – FDD UL Band j Network B Network A Network B Network A Network C Network C Figure 7.1. Spectrum Aggregation Scenarios for FDD. For LTE Rel-10 CA, each component carrier aggregated together is a LTE Rel-8 carrier. That is, each component carrier uses the LTE Rel-8 numerology and occupies a maximum of 110 resource blocks. Both contiguous component carriers and non-contiguous component carriers are supported. The exact CA scenarios will be determined by RAN 4 in a release-independent manner as discussed in Section 7.4. In LTE Rel-10, both symmetric as well as asymmetric CA are supported. In symmetric CA, the numbers of DL and UL component carriers are the same. In asymmetric CA the numbers and bandwidths of DL and UL carriers are different. For simplicity, LTE Rel-10 only supports asymmetrical CA where the number of DL carriers is greater than or equal to the number of UL carriers. In TDD deployments, however, the number of component carriers in UL and DL is typically the same. For the MAC to PHY mapping strategy, separate transport blocks, HARQ entities, and HARQ feedback are supported for each component carrier. This allows for maximum reuse of Rel-8 functionalities and better HARQ performance due to carrier component-based link adaptation. This strategy also implies that the uplink transmission format is a multi-carrier transmission consisting of an aggregation of single carrier DFT-S-OFDM (NxDFT-S-OFDM) illustrated in Figure 7.2. www.4gamericas.org February 2011 Page 52 Network D Network D Network D Network A EUTRA – FDD UL Band k Network C Network C Network D Network A Network A Network A resources combined with Network B Network A Combined Combined DL DL DL Network A Network A resources combined with Network D DL Network A Network A EUTRA – FDD DL Band j Network B Network A Network B Network C Network C EUTRA – FDD DL Band j Network A Combined Combined UL UL DL Network A resources combined with Network D DL EUTRA – FDD DL Band j Network A Network B Network A Network C Network C Combined Combined DL DL Network C Network C Network D Network D Network D Network A EUTRA – FDD DL Band k Network D Network A
Figure 7.2. An Illustration of NxDFT-S-OFDM. With respect to downlink control signaling, per-carrier scheduling grant is used. Additionally, each grant will also contain a Carrier Indication Field (CIF) that indicates the carrier to which the grant applies to enable cross-carrier scheduling. The CIF field is added to the existing Rel-8 DCI format. The per-carrier scheduling has the following advantages: 1) it allows several DCI formats to the same UE in different component carriers; and 2) it facilitates dynamic grant-based traffic channel load-balancing among the component carriers on a sub-frame by sub-frame basis. The PUCCHs corresponding to all DL CCs are transmitted on the Primary Component Carrier (PCC). Multi-bit HARQ feedback signaling format and Channel State Information (CSI) signaling for multiple DL CCs are supported in Rel-10. For specific UEs, Uplink Control Information (UCI) can also be transmitted simultaneously on PUCCH and PUSCH. The power control and UE power headroom reporting are enhanced to support flexible UE power amplifier implementation for diverse CA scenarios. An important aspect of the design of Rel-8 LTE is the ability of LTE to use spectrum in a flexible fashion. This allows, for example, an initial LTE deployment with a small amount of spectrum as well as migration of GSM/CDMA frequency bands. Then as the usage of LTE grows, the system can efficiently migrate to increasingly larger bandwidths. To facilitate this spectrum scalability, a number of transmission bandwidths were defined in Rel-8. 7.1.2 UPLINK TRANSMISSION ENHANCEMENTS In order to be fully IMT-Advanced compliant for uplink peak spectral efficiency, the LTE uplink must be extended with the support for uplink MIMO (multi-layer). The extension of the uplink currently under study in 3GPP can be roughly classified into two categories: 1) techniques relying on channel reciprocity; and 2) techniques not relying on channel reciprocity. Among the techniques that use channel reciprocity are Beam Forming (BF), SU-MIMO and MU-MIMO. With these techniques, the enhanced NodeB (eNB) processes a sounding reference signal from the UE to determine the channel state and assumes that the channel as seen by the eNB is the same as that seen by the UE (channel reciprocity) and forms transmission beams accordingly. It is important to note that since the transmitter has information about the channel, the transmitter may use this information to generate weights for antenna weighting/precoding. These techniques are especially suited for TDD. The channel non-reciprocity techniques can be further separated into open-loop MIMO (OL-MIMO), closed-loop MIMO (CL-MIMO) and MU-MIMO. OL-MIMO is used in the case where the transmitter has no knowledge of the Channel-State Information (CSI). Since the UE has no knowledge of the CSI from the eNB, these techniques cannot be optimized for the specific channel condition seen by the eNB receiver but they are robust to channel variations. Consequently, these techniques are well suited to high-speed mobile communications. OL-MIMO can be classified into Transmit Diversity (TXD) and Spatial www.4gamericas.org February 2011 Page 53
Page 1 and 2: www.4gamericas.org February 2011 Pa
Page 3 and 4: 7.3.1 Home NodeB/eNodeB enhancement
Page 5 and 6: D.2 TARGET REQUIREMENTS FOR 3GPP LT
Page 7 and 8: downlink throughput of up to 21 Mbp
Page 9 and 10: eceivers. Examples of advanced rece
Page 11 and 12: 1 INTRODUCTION Wireless data usage
Page 13 and 14: 2 PROGRESS OF RELEASE 99, RELEASE 5
Page 15 and 16: HSDPA network in February, followed
Page 17 and 18: download speeds of up to 8 Mbps aim
Page 19 and 20: Since around 2005, some research fi
Page 21 and 22: As operators evolve their networks
Page 23 and 24: One of key elements of the LTE/SAE
Page 25 and 26: In 2008, a top vendor unveiled the
Page 27 and 28: 3 PLANS FOR RELEASE 9 AND RELEASE 1
Page 29 and 30: 4 THE GROWING DEMANDS FOR WIRELESS
Page 31 and 32: to address network congestion issue
Page 33 and 34: U.S. This represents a 151 percent
Page 35 and 36: accounted for 12 percent of total r
Page 37 and 38: various mobile data services have o
Page 39 and 40: devices to turn them into full-fled
Page 41 and 42: spectrum for mobile broadband use.
Page 43 and 44: MME S1-MME S11 eNode IP GW S1-U Fig
Page 45 and 46: Figure 5.2. Example of Semi-Persist
Page 47 and 48: ideas for potential technologies an
Page 49 and 50: 6.2 THE 3GPP ROLE Figure 6.1. Progr
Page 51: 7 STATUS OF RELEASE 10: HSPA+ ENHAN
Page 55 and 56: LTE-Advanced will extend the downli
Page 57 and 58: complexity but it may also be used
Page 59 and 60: to in 3GPP. 117 The simulation scen
Page 61 and 62: To enhance the measurement accuracy
Page 63 and 64: enables the base station to schedul
Page 65 and 66: These two advantages are illustrate
Page 67 and 68: Local IP Access provides access for
Page 69 and 70: 7.3.3 FIXED MOBILE CONVERGENCE ENHA
Page 71 and 72: PCC, so the 3GPP intends to first a
Page 73 and 74: The study is concluded in 3GPP Rel-
Page 75 and 76: The decision to anchor media at the
Page 77 and 78: 7.3.9 IP‐SHORT‐MESSAGE‐GATEWA
Page 79 and 80: E-UTRA CA Band E-UTRA operating Ban
Page 81 and 82: optimized proprietary receiver tran
Page 83 and 84: 8.2.1.3 DL COMP In terms of downlin
Page 85 and 86: 8.2.2 CARRIER AGGREGATION Figure 8.
Page 87 and 88: 2-TX antennas Figure 8.5. Uplink Du
Page 89 and 90: � Subscribed for same or similar
Page 91 and 92: The mechanism shall properly handle
Page 93 and 94: 8.4.7 FIXED MOBILE CONVERGENCE The
Page 95 and 96: 9 CONCLUSIONS Wireless data usage c
Page 97 and 98: Communications Research demo lab in
Page 99 and 100: increases through load balancing an
Page 101 and 102: support the most heavily loaded and
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Telecom, Telecom Italia, Telefónic
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Motorola’s mobility management en
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conducted with the 4G mobile techno
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� The industry’s first dual-car
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APPENDIX B: UPDATE OF RELEASE 9 STA
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that is vital for the operation of
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B.2.1.4 PDN GW SELECTION FUNCTION (
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The subscribers of participating CM
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3GPP TS 29.168. Cell Broadcast Cent
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� Gateway Mobile Location Center
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CELL ID METHOD This is the simplest
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Figure B.4. 1xRTT CSFB Architecture
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In the following outline, the funct
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o Includes concurrent 1xRTT and HRP
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MBMS GW One or more MBMS GW functio
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Figure B.7. Phases of MBMS Broadcas
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B.2.6 SELF‐ORGANIZING NETWORKS (S
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cross-talk suppression. The downlin
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eNodeB solutions. Rel-8 defined the
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UE HeNB LTE-Uu C1 (OMA DM /OTA) S1
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Server. The latter capability allow
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Denoted by � i the number of corr
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Table C.2. Cell Edge User Spectral
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C.1.7 HANDOVER The handover interru
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APPENDIX D: LTE‐ADVANCED AND SELF
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2 Linked work items (list of linked
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d) To develop documents that will s
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Full‐buffer spectrum efficiency E
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Uplink peak spectrum efficiency •
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Cell‐average and Cell‐edge spec
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Cell‐average and Cell‐edge spec
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Antenna configuration (C) VoIP resu
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APPENDIX F: THE ITU‐R IMT‐ADVAN
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ITU-R Outside ITU-R Step 1 Circular
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APPENDIX G: GLOBAL HSPA & HSPA+ DEP
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Africa Réunion SFR Reunion In Serv
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Latin America & Caribbean Jamaica C
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Asia Pacific Malaysia DiGi (Telenor
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Eastern Europe Czech Republic Mobil
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Eastern Europe Slovenia T‐2 In De
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Western Europe Liechtenstein mobilk
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US/Canada Canada Bell Wireless Affi
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Latin America Colombia UNE Planned
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Eastern Europe Armenia Orange Armen
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Western Europe Andorra STA Planned
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Middle East Saudi Arabia Etihad Eti
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C/I Carrier to Interference Ratio (
Page 197 and 198:
FER Frame Erasure Rate FFR Fraction
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LI Lawful Intercept LIPA Local Inte
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PHICH Physical Hybrid ARQ Indicator
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TAU Target Acquisition and tracking
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ACKNOWLEDGMENTS The mission of 4G A
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