4G频带共享网络的PDCCH调度和功率调整方法

PDCCH Scheduling and Power Adjustment Method for 4G Band Sharing Network

无线移动通信网络频谱共享即不同制式无线网络共享频谱分配,实现无线频谱的高效利用。对于长期演进LTE(Long Term Evolution, LTE)与全球移动通信系统GSM(Global System for Mobile Communications, GSM)网络的频带共享过程中,GSM会对LTE造成干扰,影响LTE的通信质量,尤其是对LTE下行控制信道物理下行控制信道PDCCH(Physical Downlink Control Channel, PDCCH)的影响。由于PDCCH信道映射的特殊性,使得其无法完全避免干扰对它的影响。鉴于此,文章提出一种适用于第四代移动通信技术4G(The 4~(th) Generation of Mobile Communication Technology Standards, 4G)频带共享网络的PDCCH调度、功率调整方法。其核心思想是:通过共享频带的模型,决定PDCCH调度策略,同时,评估异网络对PDCCH的影响,从而调整PDCCH的功率。保证了控制信道的传输性能,从而完成了高效的、可靠的频谱共享网络通信。

Wireless mobile communication network spectrum sharing refers to the sharing of spectrum allocation among different standard wireless nctworks,achieving efficient utilization of wireless spectrum.During the frequency band sharing process between Long Term Evolution LTE(Long Term Evolution,LTE)and Global System for Mobile Communications GSM(Glob-al System for Mobile Communications,GSM)networks,GSM will cause interference to LTE,affecting the communication quality of LTE,especially the impact on the downlink control channel Physical Downlink Control Channel PDCCH(Physical Downlink Control Channel,PD-CCH)of LTE.Due to the special nature of PDCCH channel mapping,it is impossible to com-pletely avoid the impact of interference on it.In view of this,the article proposes a PDCCH scheduling and power adjustment method suitable for The 4th Generation of Mobile Communi-cation Technology Standards 4G(The 4a Generation of Mobile Communication Technology Standards,4G)band sharing networks.The core idea is to determine the PDCCH scheduling strategy through a shared frequency band model,and at the same time,evaluate the impact of heterogeneous networks on PDCCH,in order to adjust the power of PDCCH.Ensuring the transmission performancc of the control channcl,thus achieving efficient and reliable spectrum sharing nctwork communication.