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[ "张诗壮(1973- ),男,中兴通讯股份有限公司无线研究院系统部部长,主要研究方向为4G/5G系统架构设计。" ]
[ "袁志锋(1979- ),男,中兴通讯股份有限公司无线研究院算法部技术预研资深专家,主要研究方向为新型多址技术、免调度传输、先进接收机、纠错码、自适应算法、MIMO 系统和高速软硬件算法等。" ]
[ "李卫敏(1985- ),男,中兴通讯股份有限公司无线研究院算法部技术预研高级工程师,主要研究方向为 5G 物理层技术,包括功率控制、干扰控制、非正交多址接入、海量机器通信等。" ]
网络出版日期:2019-07,
纸质出版日期:2019-07-20
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张诗壮, 袁志锋, 李卫敏. 面向5G mMTC的data-only竞争式免调度接入[J]. 电信科学, 2019,35(7):37-46.
Shizhuang ZHANG, Zhifeng YUAN, Weimin LI. Data-only contention-based grant-free multiple access for 5G mMTC[J]. Telecommunications science, 2019, 35(7): 37-46.
张诗壮, 袁志锋, 李卫敏. 面向5G mMTC的data-only竞争式免调度接入[J]. 电信科学, 2019,35(7):37-46. DOI: 10.11959/j.issn.1000-0801.2019177.
Shizhuang ZHANG, Zhifeng YUAN, Weimin LI. Data-only contention-based grant-free multiple access for 5G mMTC[J]. Telecommunications science, 2019, 35(7): 37-46. DOI: 10.11959/j.issn.1000-0801.2019177.
基于参考信号的竞争式免调度接入,参考信号的碰撞会限制其性能。考虑了一种基于纯数据(data-only)的竞争式免调度接入方案,其盲检测接收机充分利用数据本身的特点来实现多用户检测,避免了参考信号的碰撞难题以及资源开销,因而可取得高得多的业务负载。另一方面,高负载接入性能还受限于小区间干扰。data-only 接入信号不包含小区级处理,每个小区基站的盲检测接收机会对所有接收到的用户信号,包括靠近本区的邻区用户信号,进行解调译码和干扰消除。这实质上实施了小区间干扰消除,因而能明显减少邻区的强干扰,进而提升系统的负载。而且data-only盲检测接收机实现小区间干扰消除并不用增加很多额外的复杂度,这是传统小区间干扰消除方法所不具备的优点。
For contention-based grant-free access
reference signal collision would restrict the performance. A data-only contention-based grant-free scheme was considered
where the blind detection receiver does not depend on reference signal to detect users’ information by fully exploiting the characteristics of the data itself
so the limitation from reference signal collision can be avoided
leading to a much higher traffic load. On the other hand
traffic load was further limited by inter-cell interference. Data-only signal does not include cell-specific processing
each cell station could detect all the received signals
including those from adjacent cells
through advanced blind detection receiver. This actually played the role of traditional inter-cell interference cancellation and therefore can achieve a better performance gain. And it would not introduce too much additional complexity.
3GPP.Study on non-orthogonal multiple access (NOMA) for NR: TR38.812 V16.0.0 [S ] . 2018 .
YUAN Z , YU G , LI W , et al . Multi-user shared access for internet of things [C ] // 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring),May 15-18,2016,Nanjing,China . Piscataway:IEEE Press , 2016 : 1 - 5 .
TIAN L , YAN C , LI W , et al . On uplink non-orthogonal multiple access for 5G: opportunities and challenges [J ] . China Communications , 2017 , 14 ( 12 ): 142 - 152 .
3GPP.Typical multi-user receivers for NOMA: R1-1801416 RAN1#92 [S ] . 2018 .
YUAN Z , HU Y , LI W , et al . Blind multi-user detection for autonomous grant-free high-overloading multiple-access without reference signal [C ] // 2018 IEEE 87th Vehicular Technology Conference (VTC Spring),June 3-6,2018,Porto,Portugal . Piscataway:IEEE Press , 2018 : 1 - 7 .
YUAN Z , LI W , HU Y , et al . Blind receive beamforming for autonomous grant-free high-overloading multiple access [J ] . arXiv: 1805.070 , 2018 .
3GPP.Physical layer abstraction for NOMA SLS:RAN1# 94bis: R1-1810208 [S ] . 2018 .
IEEE.16m evaluation methodology document (EMD): IEEE 802.16m-08/004r5 [S ] . 2009 .
3GPP.Study on channel model for frequencies from 0.5 to 100 GHz: TR38.901 V14.3.0 [S ] . 2017 .
李卫敏 , 唐红 , 李剑 , 等 . 免调度非正交多址接入技术及其系统性能 [J ] . 中兴通讯技术 , 2019 , 2 ( 1 ): 35 - 41 .
LI W M , TANG H , LI J , et al . The grant-free NOMA technology and its system level performance [J ] . ZTE Technology Journal , 2019 , 2 ( 1 ): 35 - 41 .
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