[{"name":"R5-226987","title":"Discussion paper on IMS Data Channel test","source":"Huawei, Hisilicon","contact":"zhaobing yang","contact-id":80062,"tdoctype":"discussion","for":"Information","abstract":"For the test scope, I think we has reached agreement that RAN5 will work on the SIP exchange and not touch the application layer too much. Correspondingly, GSMA has built a new WI to figure out the Data Channel end-end service testing.\nFor the progress of NG.134, GSMA NG UPG IDCTF has been working on NG.134 IMS Data Channel profile for nearly a year. NG.134 v0.4 is submitted to GSMA TSG#50 for information. The NG.134 v1.0 will be sent to NG#17 for approval in 2023Q2. There is no any further technical changes are expected between NG.134 v0.4 and NG.134 v1.0.\nAs for the testability, I think what matters now is the implementation aspects. However, it won\u2019t block on a new work item approval. So we propose to approve the new WI and then discuss the test method and implementation details with the parties that are interested.\nIMS Data Channel applies to VoLTE and VoNR. So for each Radio access, the objective includes at least the following areas:\n1.\tInitial Registration to check if UE can include the sip.app-subtype media feature tag with a value \"webrtc-datachannel\" if the UE supports IMS data channel.\n2.\tBootstrap data channel to check if UE and network can establish bootstrap data channel.\n3.\tApplication data channel to check if application data channel can be established between UE and network or end-to-end between UEs.\n4.\tIMS data channel associated with an IMS call (Voice, Video) to check if UE can support using data channel simultaneously with voice or video media.\n5.\tMT Data Channel Call coexists with other scenario such as Forking to check if a terminating UE that supports data channel can be selected.\n6.\tMO Data Channel Call fallback to voice call to check if the data channel call can fallback to voice call when originating UE requests data channel but terminating UE doesn't support data channel.\n3\tProposal\nThe following is proposed:\nProposal: RAN5 to approve the new WI of IMS data channel test cases shown as draft WID R5-226988.","secretary_remarks":"","agenda_item_sort_order":9,"ainumber":"4.2.2","ainame":"\tAll other topics","tdoc_agenda_sort_order":69870,"status":"noted","reservation_date":"2022-04-11 09:04:39","uploaded":"2022-11-05 07:20:05","revisionof":"","revisedto":"","release":"Rel-17","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"https:\/\/www.3gpp.org\/ftp\/TSG_RAN\/WG5_Test_ex-T1\/TSGR5_97_Toulouse\/Docs\/R5-226987.zip","group":"R5","meeting":"R5-97","year":2022,"uicc_affected":"","me_affected":"","ran_affected":"","cn_affected":"","clauses_affected":"","crsinpack":null,"crsinpacknumber":0}]