1. www.huawei.com The contributing companies 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. China Telecom. is 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 China Telecom 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 China Telecom. China Telecom specifically reserve the right to amend or modify the material contained herein and to any intellectual property of China Telecom other than provided in the copyright statement above. Changes to Annex B of X.S0057-B Biao Long longb@gsta.com Penghui Yuan yuanpengh@gsta.com Abstract: This contribution discusses several issues of Annex B of X.S0057 B. Recommendation: For discussion and adoption. Jixing Liu liujixing@huawei.com

2. Page 2 Support APN-AMBR over Gxa Interface  3GPP TS29.212 specifies that APN-AMBR shall be supported over Gxx interface. The BBERF shall send the APN-AMBR if available using the APN-Aggregate-Max-Bitrate- DL/UL AVPs at Gateway Control Session Establishment procedure. The PCRF may modifiy the APN-AMBR as part of the Gateway Control and QoS rules provision procedure.  Excerpted from Annex B of 3GPP2 X.S0057 B  APN-AMBR shall be supported over Gxa interface.  Excerpted from clause 9.1.4.1 of 3GPP2 X.S0057 B. The APN-AMBR is supported in VSNCP.

3. Page 3 AN-GW-Address 5.3.49AN-GW-Address AVP (All access types) The AN-GW-Address AVP (AVP code 1050) is of type Address, and it contains the IPv4 and/ or IPv6 (if available) address(es) of the access node gateway (SGW for 3GPP and AGW for non-3GPP networks). NOTE:If both IPv4 and IPv6 addresses are provided then two instances of this AVP are required in Diameter commands  Excerpted from 3GPP2 X.S0057-B  Excerpted from 3GPP TS 29.212 R10  It shall be the address used over S2a interface, not the one used over other interface. The PCEF will report the AN_GW_CHANGE event to PCRF if requested and the address changed.

4. Page 4 Suggestion  Support the APN-AMBR in Gxa interface.  Clarify that AN-GW-Address is the HSGW address used over S2a interface.

5. Page 5 Thanks