LTE中适用于MBSFN的自适应资源分配机制

doi:10.3969/j.issn.1001-2400.2012.05.022

Abstract

Abstract:

In the LTE systems, the multicast and broadcast single frequency network (MBSFN) transmission mode is defined for multimedia services. An adaptive resource allocation scheme for LTE systems with MBSFN transmission mode is proposed, in which the sub-frame is allocated according to the required radio resource of multicast traffic and the channel condition. In each resource allocation interval, the sub-frame ratio required by the multicast traffic is estimated and then a single plus interference and noise ratio threshold is given based on the estimated sub-frame ratio; the sub-frame is allocated adaptively to the multicast traffic or the unicast traffic based on the threshold decision and the allocated resource of the multicast traffic as well. Simulation results show that the proposed scheme can guarantee the data rate of the multicast traffic and improve the throughput of the unicast traffic, so the radio resource utility of the system is optimised.

Key words: LTE, multicast and broadcast single frequency network, multicast traffic, resource allocation

ZHANG Tiankui;JIANG Aoxue;FENG Chunyan. Adaptive resource allocation scheme for MBSFN transmission in LTE[J].J4, 2012, 39(5): 126-131+191.

References

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Adaptive resource allocation scheme for MBSFN transmission in LTE

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