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The Coordinated Multi-Point (CoMP) transmission /reception technique has been adopted one of key technologies for LTE-A system in 3GPP LTE project, which can increase the cell average and cell edge user throughput in the both uplink and downlink by joint scheduling and data processing in multiple cells/eNBs. In this paper, the principle of CoMP is introduced, and the CoMP architecture and corresponding...
Taking the uplink scheduling technique in 3GPP LTE system into consideration, the two-level buffer state report (BSR) scheme is proposed as a better candidate solution for uplink resource allocation in LTE system and future beyond third-generation system. In the proposed two-level scheme, the second level BSR content is a complement information of the BSR in LTE system which is regarded as the first...
In face of heterogeneous RATs coexisting in next generation communication system, the network selection is related to Cooperative Radio Resource Management (CRRM) and QoS requirements of traffics and users' preference etc to give the best choice for the users. Based on the proposed MAC layer architecture which set Cooperative RRM manager, in this paper the Differentiated Traffics Relative Band Request...
In this paper, a new QoS-Guarantee resource allocation scheme is proposed for multi-user MIMO- OFDM systems. Based on channel state information (CSI) , the base station (BS) employs singular value decomposition (SVD) to transmit the MIMO channel into parallel eigenmode subchannels for each subcarrier, and then subcarriers, bits and power are dynamically allocated to users according to user's support...
A modeling method for wireless packet networks based on network calculus (NC) theory, employing the concatenation of NC components to represent the effects of the modules constituting wireless packet networks model, is proposed in this paper. Three well-known scheduling algorithms are modified to agree with the proposed NC model. A new scheduling algorithm for packet networks is proposed in the context...
In this paper we present a cross-layer fair algorithm for efficient packet scheduling in wireless OFDMA system. At the medium access control (MAC) layer, we perform a prediction of the future state of the wireless channel for each user by utilizing the information from the physical layer. According to this prediction we determine which users should be served and which resources should be allocated...
In this paper, we propose and evaluate a new packet scheduling algorithm for multimedia traffics in multi-user OFDM wireless systems. Since there will be multiple quality of service (QoS) in the next generation mobile communications, especially at the downlink, how to schedule the resources to provide different QoS classes in an efficient and fair way is a crucial issue. This algorithm allocates the...
Orthogonal frequency division multiple access (OFDMA) technique is considered in this paper. We do research on the subcarrier, bit and power allocation algorithm in it and propose the novel dynamic subcarrier and bit allocation algorithm - QoS-guaranteed adaptive resource allocation algorithm with low complexity for real-time services when the instantaneous channel gain is considered. Then we can...
In this paper the new multi-carrier modulation technique-generalized multi-carrier (GMC) based on filter banks is studied for the next mobile communication system, which uses the filter banks to get a high level of subchannel spectral containment to eliminate inter-channel interference (ICI). The technique of filter design in GMC system is researched emphatically and we design the prototype filters...
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