US 12,445,904 B2
Data transmission method and device
Junshuai Sun, Beijing (CN); Guangyi Liu, Beijing (CN); and Yuhong Huang, Beijing (CN)
Assigned to CHINA MOBILE COMMUNICATION CO., LTD RESEARCH INSTITUTE, Beijing (CN); and CHINA MOBILE COMMUNICATIONS GROUP CO., LTD., Beijing (CN)
Appl. No. 18/007,457
Filed by CHINA MOBILE COMMUNICATION CO., LTD RESEARCH INSTITUTE, Beijing (CN); and CHINA MOBILE COMMUNICATIONS GROUP CO., LTD., Beijing (CN)
PCT Filed Jul. 8, 2021, PCT No. PCT/CN2021/105211
§ 371(c)(1), (2) Date Jan. 30, 2023,
PCT Pub. No. WO2022/033251, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 202010799996.2 (CN), filed on Aug. 11, 2020.
Prior Publication US 2023/0292177 A1, Sep. 14, 2023
Int. Cl. H04W 28/06 (2009.01); H04L 69/16 (2022.01); H04W 28/08 (2023.01); H04W 28/24 (2009.01)
CPC H04W 28/065 (2013.01) [H04L 69/16 (2013.01); H04W 28/0967 (2020.05); H04W 28/24 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A data transmission method, applied to a terminal, the method comprising:
when receiving first data borne on a first Access Stratum (AS) Bearer (ASB), converting, by a terminal, the first data into a first Internet Protocol (IP) data packet of a first IP flow, and receiving the first IP data packet;
when sending a second IP data packet of a second IP flow, bearing, by the terminal, the second IP data packet on a second ASB and then sending the second IP data packet out,
caching, by the terminal, the second IP data packet in an AS;
when receiving the retransmission request for the second IP data packet, resending, by the terminal, the second IP data packet cached in the AS; and
when receiving feedback information indicating successful reception of the second IP data packet, deleting, by the terminal, the second IP data packet cached in the AS.