| CPC H04L 47/32 (2013.01) [H04L 47/12 (2013.01); H04L 69/28 (2013.01)] | 20 Claims |

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1. A timer processing method, wherein the method is applied to a terminal, and comprises:
determining a packet data convergence protocol (PDCP) service data unit (SDU) group, wherein the terminal maintains different PDCP discard timer lengths for multiple PDCP SDUs in the PDCP SDU group.
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