Hybrid ORA and NORA schemes for machine-to-machine communication in long-term evolution networks
Hybrid ORA and NORA schemes for machine-to-machine communication in long-term evolution networks
复制标题
长期演进网络中机器对机器通信的混合 ORA 和 NORA 方案
DOI：
10.1049/iet-com.2018.5852
复制
发表时间：
2019-04
影响因子：
1.6
通讯作者：
Guo Xudong
中科院分区：
文献类型：
--
作者：
Zhang Mingyu;Li Ying;Guo Xudong
第五代无线通信网络将部署大量的机器类型通信（MTC）设备，这将不可避免地导致接入冲突问题。为了缓解这个问题，作者提出了一种混合正交随机接入（ORA）和非正交随机接入（诺拉）方案，以提高吞吐量。在所提出的方案中，扩展的物理随机接入信道被用来同时发送前导码和MTC设备标识信息，这可以帮助基站（BS）确定MTC设备是否能够成功发送前导码。随后，将BS成功检测到其发送的可识别码的MTC设备进行统计分组，然后同一组中的设备以非正交多址方式发送其数据消息。同时，为了进一步提高接入吞吐量，允许未通过接入类禁止检查的MTC设备以正交多址方式竞争剩余的未调度资源。他们还分析了所提出的方案的接入吞吐量。仿真结果表明，在服务于同一小区内所有MTC设备的情况下，该方案在接入吞吐量和所需随机接入时隙数方面优于传统的多信道ALOHA和两阶段随机接入方案.
Massive machine-type communication (MTC) devices will be deployed in the fifth-generation wireless communication networks, which will inevitably result in access collision problems. To alleviate this issue, the authors propose a hybrid orthogonal random access (ORA) and non-orthogonal random access (NORA) scheme to improve the throughput. In the proposed scheme, an expanded physical random access channel is employed to transmit preambles and MTC devices identity information simultaneously, which can help the base station (BS) to determine whether the MTC device can successfully transmit preamble. Subsequently, the MTC devices whose transmitted preambles are detected successfully by BS are statistically grouped, and then the devices in the same group transmit their data messages in a non-orthogonal multiple access manner. Meanwhile, to further improve the access throughput, the MTC devices that did not pass access class barring check are permitted to compete for the remained unscheduled resources with orthogonal multiple access manner. They also analyse the access throughput of the proposed scheme. Simulation results show that to serve all MTC devices distributed in a cell, their proposed scheme outperforms the traditional multichannel ALOHA and two-stage random access scheme in terms of access throughput and required number of random access slots.
登录
查看更多内容
DOI：
10.1109/wcnc.2016.7564738
发表时间：
2016-04
期刊：
2016 IEEE Wireless Communications and Networking Conference
影响因子：
--
作者：
Ningbo Zhang
通讯作者：
Ningbo Zhang
5G 系统中的上行链路非正交多址接入
DOI：
10.1109/lcomm.2016.2521374
发表时间：
2016-03-01
期刊：
IEEE COMMUNICATIONS LETTERS
影响因子：
--
作者：
Zhang, Ningbo;Wang, Jing;Liu, Yang
通讯作者：
Liu, Yang
影响因子：
4.1
作者：
L. Anxin;Lan Yang;Xiaohang Chen;Huiling Jiang
通讯作者：
L. Anxin;Lan Yang;Xiaohang Chen;Huiling Jiang
DOI：
10.1109/lcomm.2012.072012.120788
发表时间：
2012-07
期刊：
IEEE Communications Letters
影响因子：
--
作者：
K. Ko;Min Jeong Kim;Kuk Yeol Bae;D. Sung;J. H. Kim;J. Ahn
通讯作者：
K. Ko;Min Jeong Kim;Kuk Yeol Bae;D. Sung;J. H. Kim;J. Ahn
DOI：
10.1109/lcomm.2013.123113.132450
发表时间：
2014-02-01
期刊：
IEEE COMMUNICATIONS LETTERS
影响因子：
--
作者：
Choi, Jinho
通讯作者：
Choi, Jinho