公开(公告)号：US20140301367A1

公开(公告)日：2014-10-09

申请号：US14308568

申请日：2014-06-18

Applicant: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY

Inventor： Ying WANG ,  Haijing HU ,  Yihua JIANG ,  Guosheng ZHAO ,  Xunwei ZHAO

IPC: H04W36/00

CPC classification number: H04W36/0005 ,  H04L1/1642 ,  H04L1/1829 ,  H04L1/1874 ,  H04W36/02

Abstract: A method and UE for processing data during cell handover in a Long Term Evolution (LTE) system are provided. The method includes: receiving, by User Equipment (UE), a Sequence Number (SN) of a Packet Data Convergence Protocol-Service Data Unit(PDCP-SDU) that is received by a Source Evolved Node B (S_eNB) from a Target Evolved Node B (T_eNB); discarding, by the UE, the PDCP-SDU that is received by the S_eNB from a re-transmission queue, and re-transmitting other PDCP-SDUs in the queue to the T_eNB. Thereby, UE would not re-transmit PDCP-SDU corresponding to received SN, which avoids re-transmission of useless PDCP-SDU, and saves radio resources comparing with prior solutions.

Abstract translation: 提供了一种用于在长期演进（LTE）系统中的小区切换期间处理数据的方法和UE。 该方法包括：由用户设备（UE）从源演进的节点B（S_eNB）从目标演进接收到的分组数据汇聚协议服务数据单元（PDCP-SDU）的序列号（SN） 节点B（T_eNB）; 由UE丢弃由S_eNB从重发队列接收的PDCP-SDU，并将该队列中的其他PDCP-SDU重发给T_eNB。 因此，UE不会重新发送对应于接收到的SN的PDCP-SDU，这避免了无用的PDCP-SDU的重传，并且与现有的解决方案相比节省了无线电资源。