5G IMS system supporting dual-Registration for Dual-Access
draft-sfc-sinha-5g-ims-dual-reg-00

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Last updated 2018-06-18
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Service Function Chaining                              Sunil Kumar Sinha
Internet-Draft                              Infinite Computing Solutions
Intended status: Informational                            Amardeep Sinha
Expires: December 17, 2018                 Reliance Jio Infocomm Limited
                                                             Amit Mishra
                                                          Varsa Networks
                                                       Manish Srivastava
                                                      Commscope Networks
                                                           June 18, 2018

       5G IMS system supporting dual-Registration for Dual-Access
                   draft-sfc-sinha-5g-ims-dual-reg-00

Abstract

   This document attempts the case for new work that need to be 
   developed for 5G user to improve user reachability outlining the poor
   radio coverage issue with respect to voice and video services by IMS
   network. This document also outlines dual access capabilities of 5G
   user device and user is reachable on each access-type leading to
   faster user reachability.

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   This Internet-Draft will expire on December 17, 2018.

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sinha                   Expires December 17, 2018              [Page 1]
Internet-Draft      5G Dual Registration Dual Access           June 2018

Table of Contents:

   1. Introduction...................................................2
   2. Conventions and Terminology....................................2
   3. Problem Statement..............................................2
   4. 5G IMS system supporting dual-Registration for Dual-Access.....2
   5. Security Considerations........................................5
   6. IANA Considerations............................................5
      6.1 IANA Registration of the "dual" Option Tag ................5
   7. Privacy Considerations ........................................6
   8. Acknowledgements...............................................6
   9. References.....................................................6
      9.1 Normative References.......................................6
      9.2 Informative References.....................................6
   Authors' Addresses................................................6

1. Introduction

   5G system have been evolved to server 5G Users with dual access
   capability at same time. User access to network service for mo-data
   and mt-data for voice and video or data services via both access
   type is increased if user's registration state for a particular
   service is maintained on each access type independently. In this
   document, user access to voice and video service is discussed and
   proposal made to maintain user registration state for each access
   type of a user at P-CSCF.

2. Conventions and Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

3. Problem Statement

   With user registered for a service for only one access type at a
   time, then probability of user reachability at the time of service
   delivery leads to considerable amount of delay in UE hunting
   procedure.

   User registered on access type may happen that user goes
   out of network coverage at the time of serve being delivered.
   Hunting fails thereby trigger user hunting on another access type.

   A considerable amount of delay is incurred on this hunting procedure.
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