Performance Analysis of Paging Strategies and Data Delivery Approaches for Supporting Group-Oriented IoT Traffic in 5G Networks

Optimal Multicasting in Millimeter Wave 5G NR With Multi-Beam Directional Antennas

“…The algorithm's goal is to determine the groups, which will be served simultaneously, and the corresponding transmit power to minimize the ratio of occupied to Algorithm 2: Modified Incremental Multicast Grouping [17], L ≥ 1 available resources. Thus, the algorithm works until all groups are deleted from S M (lines [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. We also use D (m) to denote a set of groups to be served at a time slot m. The algorithm selects the worst (in the sense of the needed power) group from S M and adds this group to set D (m) (lines 7-9).…”

“…Finally, the computational complexity of Algorithm 3 is O(KL), where K is the complexity due to the "while" cycle over all n groups (with max K) in the worst case of the single group transmissions (lines [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. For the second component, which is inside the "while" cycle, L − 1 is the complexity due to the possible selection of simultaneous groups (lines [11][12][13][14][15][16][17][18].…”

“…Multicasting is a prominent technique applied to improve bandwidth efficiency compared to unicast transmission [6], [7]. In the multicast regime, a base station (BS) can transmit the packet to many users simultaneously using the same band and modulation and coding scheme (MCS).…”

Group-based delivery of critical traffic in cellular IoT networks

“…In [13], we discussed the necessary improvements of the SC-PTM service announcement and proposed a new grouping solution for the multicast reception of critical content, considering the drawbacks of the strategies from [11]. In the new strategy, the network schedules SC-PTM transmissions in a fixed interval named critical interval.…”

“…We also discuss minor but necessary changes in some messages of the RA stage, not addressed in [13].…”