KMS Of Academy of mathematics and systems sciences, CAS
| User Grouping and Reflective Beamforming for IRS-Aided URLLC | |
| Xie, Hailiang1,2; Xu, Jie2,3; Liu, Ya-Feng4; Liu, Liang5; Ng, Derrick Wing Kwan6 | |
| 2021-11-01 | |
| Source Publication | IEEE WIRELESS COMMUNICATIONS LETTERS
 |
| ISSN | 2162-2337 |
| Volume | 10Issue:11Pages:2533-2537 |
| Abstract | This letter studies an intelligent reflecting surface (IRS)-aided downlink ultra-reliable and low-latency communication (URLLC) system, in which an IRS is dedicatedly deployed to assist a base station (BS) to send individual short-packet messages to multiple users. To enhance the URLLC performance, the users are divided into different groups and the messages for users in each group are encoded into a single codeword. By considering the time division multiple access (TDMA) protocol among different groups, our objective is to minimize the total latency for all users subject to their individual reliability requirements, via jointly optimizing the user grouping and blocklength allocation at the BS together with the reflective beamforming at the IRS. We solve the latency minimization problem via the alternating optimization, in which the blocklengths and the reflective beamforming are optimized by using the techniques of successive convex approximation (SCA) and semi-definite relaxation (SDR), while the user grouping is updated by K-means and greedy-based methods. Numerical results show that the proposed designs can significantly reduce the communication latency, as compared to various benchmark schemes, which unveil the importance of user grouping and reflective beamforming optimization for exploiting the joint encoding gain and enhancing the worst-case user performance. |
| Keyword | Ultra-reliable and low-latency communication (URLLC) intelligent reflecting surface (IRS) user grouping reflective beamforming |
| DOI | 10.1109/LWC.2021.3106548 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2018YFB1800800] ; Science and Technology Program of Guangdong Province[2021A0505030002] ; Key Area Research and Development Program of Guangdong Province[2018B030338001] ; National Natural Science Foundation of China[U2001208] ; National Natural Science Foundation of China[61871137] ; National Natural Science Foundation of China[11688101] ; National Natural Science Foundation of China[12021001] ; Hong Kong Polytechnic University[P0030001] ; UNSW Digital Grid Futures Institute, UNSW, Sydney, under a cross-disciplinary fund scheme ; Australian Research Council's Discovery Project[DP210102169] |
| WOS Research Area | Computer Science ; Engineering ; Telecommunications |
| WOS Subject | Computer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications |
| WOS ID | WOS:000716695600045 |
| Publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.amss.ac.cn/handle/2S8OKBNM/59590 |
| Collection | 中国科学院数学与系统科学研究院 |
| Corresponding Author | Xu, Jie |
| Affiliation | 1.Guangdong Univ Technol, Sch Informat Engn, Guangzhou 510006, Peoples R China 2.Chinese Univ Hong Kong Shenzhen, Future Network Intelligence Inst, Shenzhen 518172, Peoples R China 3.Chinese Univ Hong Kong Shenzhen, Sch Sci & Engn, Shenzhen 518172, Peoples R China 4.Chinese Acad Sci, State Key Lab Sci & Engn Comp, Inst Computat Math & Sci Engn Comp, Acad Math & Syst Sci, Beijing 100190, Peoples R China 5.Hong Kong Polytech Univ, Dept Elect & Informat Engn, Hong Kong, Peoples R China 6.Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia |
| Recommended Citation GB/T 7714 | Xie, Hailiang,Xu, Jie,Liu, Ya-Feng,et al. User Grouping and Reflective Beamforming for IRS-Aided URLLC[J]. IEEE WIRELESS COMMUNICATIONS LETTERS,2021,10(11):2533-2537. |
| APA | Xie, Hailiang,Xu, Jie,Liu, Ya-Feng,Liu, Liang,&Ng, Derrick Wing Kwan.(2021).User Grouping and Reflective Beamforming for IRS-Aided URLLC.IEEE WIRELESS COMMUNICATIONS LETTERS,10(11),2533-2537. |
| MLA | Xie, Hailiang,et al."User Grouping and Reflective Beamforming for IRS-Aided URLLC".IEEE WIRELESS COMMUNICATIONS LETTERS 10.11(2021):2533-2537. |
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