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Mobile network technology trends

Global Standards Collaboration (GSC) 14. Mobile network technology trends. CCSA-Huawei technologies Co., LTD. How to provide voice continuity over LTE is still very hot and being discussed with the major difference being which is to control, IMS or CS?. BOSS. Unified Database.

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Mobile network technology trends

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  1. Global Standards Collaboration (GSC) 14 Mobile network technology trends CCSA-Huawei technologies Co., LTD

  2. How to provide voice continuity over LTE is still very hot and being discussed with the major difference being which is to control, IMS or CS? BOSS Unified Database M2M is a hotspot of the industry and its standards started in a number of SDOs O S S HLR AAA HSS Network Resource Management (PCRF) B S S CDMA/EPS interworking in different scenarios is considered by some operators in 3GPP/2. LTE-Advanced standards work started. Asymmetric Carrier Aggregation may bring revolution to spectrum and TDD/FDD model. C R M USI/PCC in Wimax Forum may bring new business model; IEEE 802.16m activities shrank down. H(e)NB Rel8 which can satisfy business deployment has been completed. Rel9 is also attracting much attention with some new features. HSPA+ enhancement technologies (MC-HSPA,etc) improve the performance greatly, which may delay LTE. Mobile －overall trend Services & Applications Data/Services MGCF CSCF MSC server Q O S Session control PDN-GW CSN SGSN MSC GMSC Mobile Core MME MGW GGSN S-GW PDSN CS domain PS domain BTS Mobile Access eNodeB eNodeB＋ Wimax NodeB CDMA AP Wifi Terminal

  3. LTE vs HSPA+ • Tier1 telcos and vendors are making more efforts on HSPA+ even than LTE in 3GPP Rel-9. (Following table gives a simple comparison between HSPA+ and LTE from a standards perspective) • Almost all operators in favor of LTE have HSPA networks, hence the latest standards progress on HSPA+ will cause big impacts on the commercial deployment of LTE. • The major operators in Europe like Vodafone, FT, TIM etc., declared LTE launch may be delayed by 2 or 3 years until at least 2011.

  4. HSPA+ LTE-A 2G/UMTS HSPA LTE T-Mobile Vodafone? Network evolution Operators will select network evolution based on current network, spectrum, financing, policy, competitions… They have pushed some new features to improve HSPA+ performances although keeping attention for LTE. • MC-HSPA enhancement(DC-HSPA+, including Dual carrier for HSUPA, DC+MIMO and DC for non-contiguous carriers)is pushed by Vodafone, Telefonica, which will improve HSPA+ downlink/uplink peak rate (84Mbps/ 4 carrier).It will be close to LTE level in order to satisfy service application for great requirement in uplink. • This feature may bring negative impacts on LTE commercial deployment if it is accepted by most operators. HSPA operators will go on evolving their HSPA networks and wait for LTE-A to be mature.

  5. LTE-Advanced - UL scheme Final submission Complete Technology Early Proposal 2x2 QPSK Addition Mar 08 Sep 09 Mar 09 Jun 08 Sep 08 Dec 08 Jun 09 UL Multiple access ：SC-FDMA--- backward compatible with LTE. TR v1.0.0 for information TR v9.1.0 to update and capture evaluation results TR v9.0.0 for approval RAN1 discussions UL scheme Carrier Aggregation ： Asymmetric&Non-contiguous CA utilize asymmetric & discrete spectrum for IMT-A Bandwidth CoMP Rel/Rep 1/3 Turbo SIC 1/2 Turbo SIC 2/3 Turbo SIC 1/3 QRM 1/2 QRM 2/3 QRM MIMO Comparison of the number of additions with QPSK and 2x2 antenna configuration Other Self eval. • SC-FDMA have the similar performance to OFDMA, with similar computational complexity. • Considering backward compatibility with LTE, most tier1 carriers and vendors prefer SC-FDMA for UL. Performances comparison with QPSK and 2x2 antennae configuration

  6. LTE-Advanced - Asymmetric Carrier Aggregation • FDD system used to be deployed in unpaired bands while TDD system in paired bands. However, there is not enough paired spectrum for the LTE-A broadband requirements. So the FDD Industry try to utilize unpaired spectrum for FDD deployment. • Harmonization of TDD and FDD may be realized based on asymmetric carrier aggregation technology. • Asymmetric Carrier Aggregation will occupy TDD bands for FDD deployment to challenge exclusive advantages for TDD in unpaired bands.

  7. CSG HSS ListSrv Non- CSG UE C1 (OMA DM) S6a MME S1-MME CSG UE H(e)NB (AP) H(e)NB GW S11 S1-U S - GW Home NB & Home eNB • H(e)NB Rel8 was completed with architecture and features confirmed in 3GPP, especially OAM interfaces data model. • T-mobile/Vodafone/ATT & Huawei/ALU/NEC are main drivers in standards activities. But small companies (Airvana, Kineto, IP access) also actively involved, indicating H(e)NB market competition not limited to big vendors. • Rel9 work started, including performance enhancements:CSG management and roaming、Inbound mobility、Local IP access to the Internet、IMS based HNB、Managed Remote Access to Home Network。

  8. Home NB & Home eNB • AP behave more and more like small-NB with features added, such as Inbound mobility and local IP access will increase cost inevitably. Each vendor will have to choose between performances and costs. • Increasing application scenarios may bring the breakthroughs in business model. Feature selection • There are controversies for feature selection based on each benefit. (Short Rel9 will NOT include all features) • CSG related features will be in Rel9, which indicated operators focus on special users to get more ARPU.

  9. IMS CS EPS Voice continuity on LTE • The continuity of CS voice service will become one of the key issues after EPS deployment. It will have heavy impact on the implementation of future network. • 3 solutions: SRVCC, CSFB and CSoPS. Based on IMS, SRVCC is considered as the natural selection for the voice continuity solution to the future network.

  10. EPS/CDMA interworking • Verizon pushed LTE/eHRPD non-optimized handover in 3GPP/2 actively. For optimized handover, they only focus on the direction from LTE to HRPD. • CDMA operators will select different network deployments based on their service strategy, current EPS Rel8 specifications can support most contents in phase2. • LTE and CDMA dual-mode chips may be a key factor for feature application, especially single radio. phase1 phase2 phase3 • All services including • VoIP • LTE/eHRPD bi-direction non-optimized handover • LTE/eHRPD bi-direction optimized handover • SRVCC • Non-real-time data services • - LTE/eHRPD bi-direction non-optimized handover • Real-time data services (non-VoIP) • LTE/eHRPD bi-direction non-optimized handover • LTE/eHRPD bi-direction optimized handover • CSFB cdma 1x eHRPD EPS 3GPP Release standardRel8

  11. Supplementary Slides

  12. SCC AS HSS ISC I2 MSC Server enhanced for ICS & SRVCC IMS CSCF Gi CS Core 3G PS Core Iu-cs Iu-ps 3G HNB GW Iuh BSS/RNS 3G HNB HUA UE IMS based HNB • This feature is mainly pushed by ATT, because ATT want IMS to be unique service control plane and to not upgrade current CS network.They prefer HUA solution supported by NEC. • Vodafone expects to upgrade current MSC server to adopt ICS architecture supported by NSN. Technical progress • IMS controls HNB access, two main solutions： • Solution1: Upgrade MSC Server, adopt current ICS procedure, pushed by Vodafone. • Solution2: Add HUA （ Home User Agent，modeling UE access CS procedure） in HNB, pushed by AT&T； • The main difference is: solution1 reduces AP complexity and causes less modification, but needs upgrade MSC; solution2 needs fewer CN changes, but upgrade AP. Vodafonesolution AT&Tsolution

  13. IMS CS CS EPS CSdomain SC MSC MSC EPS EPS HO HO FB UE UE UE UE UE UE Voice continuity on LTE

  14. Prudential Machine to Machine communication • M2M is defined as a solution of data communication which involves one or more entities that do not necessarily need human interaction. Some applications on M2M are also considered as a way of promoting power saving. • M2Mis promising to bring benefits for both mobile operators and vendors: • Possibly become mobile operators’ “blue ocean” because M2M is not overlapped with the current H2H network; • Vendors are expecting to make profit from selling the M2M-capable device or from potential requirements on network expansion brought by increased throughput. • Analysis: Unclear business mode may prevent M2M from large-scale deployment in short term • Industry：The causality dilemma between the voluminous market and the cost down of the chipset on the end device makes it the “chicken or egg first” question. • Standards：M2M communication has influence on almost every layer of the network. A couple of SDOs are trying to develop global specifications for the time being. Indifferent Positive T-Mobile questioning the business mode; no need for network improvement Vodafone closely monitoring in SDOs to avoid any big change in their network Orange：chair ofETSI M2M TC, not enthusiast TIM：mainly in 3GPP and Zigbee Alliance; questioning the role of operators in the value chain; not expecting considerable revenue in short-term NTT DoCoMo, KPN, CMCC, Telenor: Already have some applications; Eager to see solution from vendors

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