Graduate School and Research Center in Digital Sciences

Control and data channel combining in ultra-reliable low-latency communication

Le, Trung-Kien; Salim, Umer; Kaltenberger, Florian

ASILOMAR 2019, Asilomar Conference on Signals, Systems, and Computers, 3-6 November 2019, Pacific Grove, CA, USA

5G will be supporting new services that have remarkably higher requirements than LTE 4G and Ultra-reliable and low-latency communication (URLLC) is one of those emerged categories. Although various techniques have been proposed to improve the data reliability, there has been a gap in how to improve the reliability of control/scheduling information pointing to the scheduled data. In this paper, we propose an intelligent combining of retransmissions of physical downlink control channel (PDCCH) and the physical downlink data channel (PDSCH). In the proposed scheme, the downlink control information (DCI) on PDCCH already indicates the location of a potential retransmission of the corresponding PDSCH. Moreover, the retransmitted DCI can be combined with the first transmission so that resource consumption and latency are reduced compared to the conventional scheme. Theoretical calculations and simulation results show a decrease of resource consumption.

Document Bibtex

Title:Control and data channel combining in ultra-reliable low-latency communication
Keywords:5G, URLLC, PDCCH blocking, PDCCH combining, downlink scheduling scheme
City:Pacific Grove
Department:Communication systems
Eurecom ref:6053
Copyright: Asilomar
Bibtex: @inproceedings{EURECOM+6053, year = {2019}, title = {{C}ontrol and data channel combining in ultra-reliable low-latency communication}, author = {{L}e, {T}rung-{K}ien and {S}alim, {U}mer and {K}altenberger, {F}lorian}, booktitle = {{ASILOMAR} 2019, {A}silomar {C}onference on {S}ignals, {S}ystems, and {C}omputers, 3-6 {N}ovember 2019, {P}acific {G}rove, {CA}, {USA}}, address = {{P}acific {G}rove, {UNITED} {STATES}}, month = {11}, url = {} }
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