5G双连接场景下的低传输时延切换机制
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摘要
针对5G双连接切换中辅基站不变的场景,提出了一种新型切换机制。利用辅基站在切换过程中传输数据,以降低传统切换方式中因完全断开双连接导致数据传输中断所引起的时延。首先,对传统切换机制进行分析并进行问题定位;其次,提出和详细阐述新型切换机制的信令交互流程,并分别建立新型切换机制与传统切换机制中数据传输时序模型;最后,基于数据传输时序模型,用数学推导和仿真的方法对新型机制与传统机制进行对比评估,相关结果显示出新型机制在单个数据分组传输时延、数据分组平均传输时延和数据分组总传输时延三方面的优势。
A novel handover scheme was proposed for the secondary node(SN) unchanged 5 G dual-connectivity scenarios. In the proposed novel scheme, the SN connection was maintained for data packet transmission during the handover,however, both the main node(MN) and the SN were completely disconnected in the legacy scheme. The transmission delay during handover was decreased greatly by the proposed scheme. Firstly, the legacy handover scheme was analyzed and its deficiency was figured out. Then, the novel mechanism's signaling interaction was elaborated and the time sequence models for the novel scheme and the legacy scheme were further established. Finally, based on the time sequence model, the performance evaluation processes were carried out in terms of mathematical modeling and experimental simulations. The analysis results demonstrate that the proposed novel scheme reduces the single packet transmission delay,the average transmission delay and the total transmission delay, and has good performance advantages.
A novel handover scheme was proposed for the secondary node(SN) unchanged 5 G dual-connectivity scenarios. In the proposed novel scheme, the SN connection was maintained for data packet transmission during the handover,however, both the main node(MN) and the SN were completely disconnected in the legacy scheme. The transmission delay during handover was decreased greatly by the proposed scheme. Firstly, the legacy handover scheme was analyzed and its deficiency was figured out. Then, the novel mechanism's signaling interaction was elaborated and the time sequence models for the novel scheme and the legacy scheme were further established. Finally, based on the time sequence model, the performance evaluation processes were carried out in terms of mathematical modeling and experimental simulations. The analysis results demonstrate that the proposed novel scheme reduces the single packet transmission delay,the average transmission delay and the total transmission delay, and has good performance advantages.
引文
[1]3GPP.Evolved universal terrestrial radio access(E-UTRA)and evolved universal terrestrial radio access network(E-UTRAN):overall description(release 13):TS 36.300 V13.4.0[S].3rd Generation Partnership Project,2016.
[2]ROSA C,PEDERSEN K,WANG H,et al.Dual connectivity for LTEsmall cell evolution:functionality and performance aspects[J].IEEECommunications Magazine,2016,54(6):137-143.
[3]KIBRIA M G,NGUYEN K,VILLARDI G P,et al.Next generation new radio small cell enhancement:architectural options,functionality and performance aspects[J].IEEE Wireless Communications,2018,25(4):120-128
[4]HUAWEI,HISILICON.R2-1811712 TP to 37.340 for NR-NR DC[R].Gothenburg,Sweden:3GPP RAN2#103,2018.
[5]3GPP.Study on new radio access technology:radio access architecture and interfaces(release 14):TR38.801 V14.0.0[S].3rd Generation Partnership Project,2017.
[6]INTEL.R2-1813992 RRC reconfiguration structure for NR-DC[R].3rd Generation Partnership Project,2018.
[7]HUAWEI,HISILICON.R2-1814119 details on RRCRe configuration for NR-DC and NE-DC[R].3rd Generation Partnership Project,2018.
[8]ERICSSON.R2-1812020 NR RRC design principles for NN-DC[R].3rd Generation Partnership Project,2018.
[9]ZTE.R2-1811589 Consideration on the measurement configuration for NR-NR DC[R].3rd Generation Partnership Project,2018.
[10]HUAWEI,HISILICON.R2-1811714 Discussion of Measurement Aspects for NR-NR-DC[R].3rd Generation Partnership Project,2018.
[11]NOKIA,NOKIA SHANGHAI BELL.R2-1812714 Consideration on Measurement configuration in NR-NR DC[R].3rd Generation Partnership Project,2018.
[12]QUALCOMM INCORPORATED.R2-1813813 Discussions on measurement gap configuration and coordination in N-R-DC[R].3rd Generation Partnership Project,2018.
[13]HUAWEI,HISILICON.R2-1814114 Discussion of measurement aspects for NR-NR-DC[R].3rd Generation Partnership Project,2018.
[14]INTEL CORPORATION.R2-1814486 NR-NR DC measurement configuration[R].3rd Generation Partnership Project,2018.
[15]NOKIA SHANGHAI BELL.R2-1814529 Consideration on measurement configuration in NR-NR DC[R].3rd Generation Partnership Project,2018.
[16]ERICSSON.R2-1814567 MN and SN measurement configuration in NR-DC[R].3rd Generation Partnership Project,2018.
[17]HUAWEI,HISILICON.R2-1807184 QoS flow offloading in DC[R].3rd Generation Partnership Project,2018.
[18]SAMSUNG.R2-1815319 QoS flow handling in NR-DC[R].3rd Generation Partnership Project,2018.
[19]HUAWEI,HISILICON.R2-1812147 In order delivery during Qo Sflow relocation in MR-DC[R].3rd Generation Partnership Project,2018.
[20]HUAWEI,HISILICON.R2-1809975 In order delivery during Qo S flow relocation in MR-DC[R].3rd Generation Partnership Project,2018.
[21]3GPP.Evolved universal terrestrial radio access(E-UTRA)and NR:multi-connectivity(release 15):TS 37.340 V15.1.0[S].3rd Generation Partnership Project,2018.
[2]ROSA C,PEDERSEN K,WANG H,et al.Dual connectivity for LTEsmall cell evolution:functionality and performance aspects[J].IEEECommunications Magazine,2016,54(6):137-143.
[3]KIBRIA M G,NGUYEN K,VILLARDI G P,et al.Next generation new radio small cell enhancement:architectural options,functionality and performance aspects[J].IEEE Wireless Communications,2018,25(4):120-128
[4]HUAWEI,HISILICON.R2-1811712 TP to 37.340 for NR-NR DC[R].Gothenburg,Sweden:3GPP RAN2#103,2018.
[5]3GPP.Study on new radio access technology:radio access architecture and interfaces(release 14):TR38.801 V14.0.0[S].3rd Generation Partnership Project,2017.
[6]INTEL.R2-1813992 RRC reconfiguration structure for NR-DC[R].3rd Generation Partnership Project,2018.
[7]HUAWEI,HISILICON.R2-1814119 details on RRCRe configuration for NR-DC and NE-DC[R].3rd Generation Partnership Project,2018.
[8]ERICSSON.R2-1812020 NR RRC design principles for NN-DC[R].3rd Generation Partnership Project,2018.
[9]ZTE.R2-1811589 Consideration on the measurement configuration for NR-NR DC[R].3rd Generation Partnership Project,2018.
[10]HUAWEI,HISILICON.R2-1811714 Discussion of Measurement Aspects for NR-NR-DC[R].3rd Generation Partnership Project,2018.
[11]NOKIA,NOKIA SHANGHAI BELL.R2-1812714 Consideration on Measurement configuration in NR-NR DC[R].3rd Generation Partnership Project,2018.
[12]QUALCOMM INCORPORATED.R2-1813813 Discussions on measurement gap configuration and coordination in N-R-DC[R].3rd Generation Partnership Project,2018.
[13]HUAWEI,HISILICON.R2-1814114 Discussion of measurement aspects for NR-NR-DC[R].3rd Generation Partnership Project,2018.
[14]INTEL CORPORATION.R2-1814486 NR-NR DC measurement configuration[R].3rd Generation Partnership Project,2018.
[15]NOKIA SHANGHAI BELL.R2-1814529 Consideration on measurement configuration in NR-NR DC[R].3rd Generation Partnership Project,2018.
[16]ERICSSON.R2-1814567 MN and SN measurement configuration in NR-DC[R].3rd Generation Partnership Project,2018.
[17]HUAWEI,HISILICON.R2-1807184 QoS flow offloading in DC[R].3rd Generation Partnership Project,2018.
[18]SAMSUNG.R2-1815319 QoS flow handling in NR-DC[R].3rd Generation Partnership Project,2018.
[19]HUAWEI,HISILICON.R2-1812147 In order delivery during Qo Sflow relocation in MR-DC[R].3rd Generation Partnership Project,2018.
[20]HUAWEI,HISILICON.R2-1809975 In order delivery during Qo S flow relocation in MR-DC[R].3rd Generation Partnership Project,2018.
[21]3GPP.Evolved universal terrestrial radio access(E-UTRA)and NR:multi-connectivity(release 15):TS 37.340 V15.1.0[S].3rd Generation Partnership Project,2018.