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Erschienen in:
2019 | OriginalPaper | Buchkapitel
Improving Uplink Resource Batch Utilization in LTE Licensed-Assisted Access
verfasst von : Chih-Cheng Tseng, Hwang-Cheng Wang, Ling-Han Wang
Erschienen in: Wireless Internet
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Abstract
Due to network congestion, access to unlicensed spectrum gives new hope for extending the available bandwidth. Licensed-Assisted Access (LAA) is the technology that can be applied to deliver services in the 5 GHz unlicensed spectrum. In general, there are two schemes to access the unlicensed spectrum, namely, random access and scheduled access. Two types of UEs, basic and premium, with two different preferences are considered. Without violating the size of a coalition, UEs with the same preference are put into disjoint coalitions. Likewise, the resource batches are partitioned into two parts and are allocated to the coalitions. The resource batch utilization (RBU) is used to measure the uplink utilization of the resource batches. Compared to the case when all resource batches are under random or scheduled access by all UEs, the numerical results show that the proposed approach is a viable solution in the design of LAA under different degrees of interference from Wi-Fi.