公开(公告)号：US20180063872A1

公开(公告)日：2018-03-01

申请号：US15553242

申请日：2015-05-08

Applicant: MOTOROLA SOLUTIONS, INC

Inventor： YONG TIAN ,  LI-YA MI ,  ZHONG WEI ,  KANG-KAI ZHAO

IPC: H04W76/00 ,  H04M3/42 ,  H04M3/56 ,  H04W4/16

Abstract: Missed voice stream portions are replayed at a late entry subscriber device (SD) in a wireless radio network. The SD joins a voice call on a radio channel via a base station and detects that it is late to the call. The SD continues to receive a remaining portion of the call and plays back the portion of the call. The SD detects an end of the voice call, and (i) transmits a request message including an indication of a first duration of the portion of the call received or (ii) detects a similar message from another SD. The SD then receives an indication of a total duration of the voice call and calculates a third duration as a function of the total duration and the first duration. The SD receives and plays back the missed portion of the call for the third duration.