Coexistence Performance of GAA Use Cases using LTE-TDD Technologies in 3.5GHz CBRS Spectrum
Coexistence Performance of GAA Use Cases using LTE-TDD Technologies in 3.5GHz CBRS Spectrum
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在 3.5GHz CBRS 频谱中使用 LTE-TDD 技术的 GAA 用例的共存性能
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Mats Buchmayer
中科院分区：
文献类型：
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作者：
D. Kang;K. Balachandran;Mats Buchmayer
公民宽带无线电服务（CBRS）是一种在3550 - 3700 MHz频段用于无线宽带的新型共享频谱许可制度，它允许两层宽带用户在次要基础上使用频谱，而首要层级由雷达和固定卫星服务组成。CBRS联盟是一个行业协会，负责制定CBRS内运行的LTE - TDD系统之间的共存标准。该联盟试图引入一个被称为共存管理器（CxM）的逻辑协调实体，它将管理构成第三层的通用授权接入（GAA）LTE用户之间的高效信道分配[1]。我们评估了LTE - TDD网络的GAA共存性能，并对CxM中潜在信道分配解决方案的性能增益提供了见解。对三维城市环境进行建模的系统仿真表明，基于位置的解决方案确保了室外微网络之间的充分共存。然而，当附近存在大量室内专用微微网络时，这种方法会导致保守的频率复用。在那种情况下，长期测量表明，低功率专用网络在与微网络容量进行一定权衡时具有优势。
The Citizens Broadband Radio Service (CBRS) is a novel shared spectrum licensing regime in the range 3550-3700 MHz for wireless broadband that allows two tiers of broadband users to occupy spectrum on the secondary basis to the first primary tier composed by radar and fixed satellite services. The CBRS Alliance is an industry association developing standards for coexistence between LTE-TDD systems operating within the CBRS. The Alliance seeks to introduce a logical coordination entity known as a Coexistence Manager (CxM), that will manage efficient channel allocation among General Authorized Access (GAA) LTE users forming the third tier [1]. We evaluate the GAA coexistence performance of LTE-TDD networks and provide insights on the performance gain of potential channel allocation solutions in CxM. System simulations modeling a 3D city environment show that a location based solution ensures sufficient coexistence between outdoor Micro networks. However, this method leads to conservative frequency reuse when a number of indoor private Pico networks are present nearby. In that scenario, long-term measurement shows benefits for low-power private networks at some tradeoff with the Micro network capacity.