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    • 4. 发明申请
    • SCHEDULING REQUEST TRANSMISSION SUPPORTING HIGH DOPPLER
    • 调度请求传输支持高多普勒
    • WO2009021952A2
    • 2009-02-19
    • PCT/EP2008/060589
    • 2008-08-12
    • NOKIA SIEMENS NETWORKS OYHOOLI, KariPAJUKOSKI, KariTIIROLA, Esa
    • HOOLI, KariPAJUKOSKI, KariTIIROLA, Esa
    • H04L5/02H04B1/707
    • H04L5/023H04J13/00H04L1/1671
    • Block spreading generating partial orthogality is applied for the uplink control channel for E-UTRA. For instance, a problem of maximizing the multiplexing capacity leads to numerology causing odd-length sequences which do not have the favorable property of even-length sequences (partial orthogonality). The consequence of this is poor performance in cases of high Doppler effects. Maximal multiplexing capacity is taught without loss of performance at high Doppler by modifying an earlier scheduling request (SR) scheme. The earlier SR multiplexing scheme has a number of parallel SR resources per slot equal to 12*7=84. In one example, the spreading factor of block spreading is changed to an even number, e.g., from 7 to 6. This enables usage of the partial orthogonality properties of CAZAC sequences and as a result inter-code interference in the case of high Doppler is reduced. Other ways to generate partial orthogonality are shown with similar results.
    • 针对E-UTRA的上行链路控制信道应用块扩展生成局部正交性。 例如,最大化多路复用容量的问题导致命理学引起不具有偶数长度序列(部分正交性)的有利特性的奇数序列。 其结果是高多普勒效应的情况下表现不佳。 通过修改较早的调度请求(SR)方案来教授最大复用容量,而不会在高多普勒下的性能损失。 较早的SR复用方案具​​有每个时隙等于12 * 7 = 84的多个并行SR资源。 在一个示例中,块扩展的扩展因子被改变为偶数,例如从7到6.这使得可以使用CAZAC序列的部分正交性质,并且作为高多普勒情况下的码间干扰的结果 降低。 显示了产生部分正交性的其他方法,结果类似。