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In LTE TDD, some configurations which assign more subframes for Downlink (DL) are designed for heavy DL traffic. In such case, multiple HARQ ACK/NACKs for different DL subframes shall be transmitted in a given Uplink (UL) subframe. This situation will become worse while the Machine Type Communication (MTC) User Equipments (UEs) come into the LTE network because the number of the MTC UEs is very large...
Although BitTorrent scales well to support large peer populations, the non-uniform seeder distribution over swarms leads to suboptimal content distribution. In this paper, we propose SeederTrading enabling the over-seeded swarms to trade the seeder bandwidth with the under-seeded swarms to examine the potential improvement through trading seeder bandwidth across swarms. Simulation results show that...
Carrier aggregation (CA) is one of the most distinct features for LTE-Advanced systems, which can support a much wider transmission bandwidth up to 100 MHz by aggregating two or more individual component carriers (CCs) belonging to the same (intra-band) or different (inter-band) frequency bands. With CA, it is possible to schedule a user equipment (UE) on multiple CCs simultaneously. From radio resource...
In IEEE 802.16 networks, bandwidth allocation is centralized at the base station (BS). For the uplink traffic, data transmission is scheduled after the BS processes bandwidth requests (BW-REQs) sent by mobile stations (MSs). In this paper we focus on the multicast/broadcast polling method, where MSs send their BW-REQs during contention periods. Contention-based polling is deemed suitable for Best-Effort...
According to different priority based services, IEEE 802.16e WiMAX standard classifies packets as UGS, RTPS, eRTPS, nRTPS, BE. The standard treats all packets generated while browsing the internet as delay tolerant packets and classifies them as Best Effort (BE) packets. This includes BE packets generated while browsing secure websites. However, secure transactions are governed by time constraints...
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