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www.huawei.com The contributors grant a free, irrevocable license to 3GPP2 and its Organizational Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner's name any Organizational Partner's standards publication even though it may include all or portions of this contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contribution or the resulting Organizational Partner's standards publication. The contributors are also willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an Organizational Partner’s standard which incorporates this contribution. This document has been prepared by the contributors to assist the development of specifications by 3GPP2. It is proposed to the Committee as a basis for discussion and is not to be construed as a binding proposal on the contributors. The contributors specifically reserve the right to amend or modify the material contained herein and to any intellectual property of the contributors other than provided in the copyright statement above. CL CA(CDMA & LTE Carrier Aggregation) Introduction Abstract: This contribution discusses several issues of CL CA. Recommendation: For discussion Catherine Zhu China Telecom Liu JixingHuawei Mike DolanAlcatel-Lucent Yu YanfangZTE 3GPP2 SX00-20130311-xxx 3GPP2 AC00-20130311-xxx
Page 2 Why we need CA Aggregate the throughput of both CDMA and LTE radio systems Optimize the utilization of the limited spectrum resources Leverage the CDMA radio resources as much as we can
Page 3 CLCA facing issues How to position the anchor? User plane anchor and the control point Which layer should the data flow be split? IP or Lower layer What is the aggregation policy? Static or dynamic? The same Qos flow can be split over two systems or not?
Page 4 Option 1 P-GW anchor IP packet to the UE is split/aggregated at the P-GW by static or dynamic data flow.
Page 5 Option 2 EUTRAN anchor User data to the UE is split/aggregated at the EUTRAN Data is transmitted between UE and EUTRAN over both HRPD and EUTRAN. The data via eAN is IP packet or lower layer packet(e.g. PDCP packet)
Page 6 Option 3 eAN anchor User data to the UE is split/aggregated at the eAN Data is transmitted between UE and eAN over both HRPD and EUTRAN. The data via EUTRAN is IP packet or PPP packet
Option 4: eHRPD/LTE carrier exchange Page 7 Carrier aggregation between LTE carriers and eHRPD carriers means LTE can get available eHRPD carriers information and use them as LTE carriers to get bigger width. The issue is to be simplified because of carrier aggregation concept changed from inter LTE-eHRPD carrier aggregation to inter LTE-bands carrier aggregation. This option allows operators, for example, to use their spectrum for LTE during the day, and for M2M on eHRPD at night.
Page 8 Suggestion Probably should consider option 1 as the most highest priority of study TR and option 4 as a secondary. Continue the further study of CLCA if the technology is moving forward and no major impact on the current CDMA network is required.