本文選題：星地一體化網(wǎng)絡 + 異構云接入��； 參考：《哈爾濱工業(yè)大學》2017年碩士論文

【摘要】：星地一體化網(wǎng)絡由于具備衛(wèi)星網(wǎng)絡覆蓋域廣和地面網(wǎng)絡承載業(yè)務量大的特色,具有全天候無縫覆蓋等特點,是通信行業(yè)打造“一帶一路”的重要信息橋梁。衛(wèi)星網(wǎng)絡與地面網(wǎng)絡相輔相成互相影響,共同作用于地面用戶。本課題將地面用戶終端主要分為兩大類:衛(wèi)星網(wǎng)絡終端用戶以及地面基站用戶。星地頻譜共享方案的提出大幅度提升了系統(tǒng)的頻譜利用率,然而這也面臨另一個困擾,衛(wèi)星網(wǎng)絡與地面網(wǎng)絡之間的會產(chǎn)生一定的同頻干擾,這導致星地鏈路同頻干擾大幅度降低,信干噪比(SINR,Signal to Interference plus Noise Radio)、能量效率較低。因此,不斷優(yōu)化星地頻譜共享方案已成為當前研究的熱點問題。星地一體化網(wǎng)絡能夠充分利用衛(wèi)星網(wǎng)絡廣闊的服務區(qū)域以及地面網(wǎng)絡的用戶密集自適應云接入的互補優(yōu)勢,從而實現(xiàn)高速移動寬帶網(wǎng)絡的全天候以及全地域無縫覆蓋,滿足各類用戶對于全球全天候無縫覆蓋通信的客觀需求。本課題立足于星地一體化網(wǎng)絡背景下,為了應對局域業(yè)務量大,大面積區(qū)域少量業(yè)務需求等問題,即如何在網(wǎng)絡資源有限的情況下提高網(wǎng)絡吞吐量和能量效率,保證用戶能夠自適應接入,提供良好的用戶體驗(Qo E,Quality of Experience),本文在兼顧吞吐量的同時,提出具有高能量效率的無線資源管理方案。本文推導星地鏈路的SINR與能量效率之間的動態(tài)關系,分析終端用戶位置、保護區(qū)大小、終端用戶發(fā)射功率對星地鏈路SINR、能量效率等性能的影響,提出一種能量高效的頻譜資源分配方案,即聯(lián)合地面軟頻率復用策略,對小區(qū)邊緣用戶對應的頻段保護級別進行排序,優(yōu)先分配較高級別的保護頻段給較為邊緣的用戶。能量高效的星地頻譜共享方案的建立使得來自衛(wèi)星的同頻干擾大幅地降低,此外,地面蜂窩基站間的干擾協(xié)調能夠提升了系統(tǒng)的吞吐量,使蜂窩用戶獲得了一定的抗干擾增益,進一步降低了衛(wèi)星干擾對用戶的影響。由于處于城市環(huán)境下由于穿墻損耗很大,部分辦公、家庭微基站對用戶的INR過小,因此,為了提升能效在Co MP過程中不予以考慮。本課題提出一種信道矩陣稀疏化算法來進行選擇性波束賦形,并將該方案應用于H-CRAN場景。本算法能夠大量降低了在波束賦形過程中基帶處理的功耗,提升了系統(tǒng)的能量效率。
[Abstract]:The integrated satellite network has the characteristics of wide coverage of satellite network and large carrying capacity of terrestrial network, and has the characteristics of all-weather seamless coverage, which is an important information bridge for the communication industry to build "Belt and Road". Satellite network and terrestrial network complement each other and act together on the ground users. In this paper, terrestrial user terminals are divided into two categories: satellite network terminal users and terrestrial base station users. The proposed scheme of satellite-ground spectrum sharing has greatly improved the spectral efficiency of the system. However, it also faces another problem. The satellite network and the terrestrial network will produce some interference of the same frequency. This results in a significant reduction of co-frequency interference, signal-to-noise ratio (SINR) signal to Interference plus Noise radiograph, and low energy efficiency. Therefore, the optimization of satellite-earth spectrum sharing schemes has become a hot issue. The satellite and earth integrated network can make full use of the complementary advantages of the vast service area of the satellite network and the user intensive adaptive cloud access of the terrestrial network, so as to realize the high-speed mobile broadband network all weather and the seamless coverage of the whole region. To meet all kinds of users for the global seamless coverage of communications objective requirements. This subject is based on the background of integrated satellite and earth network, in order to deal with the problems of large local traffic and small amount of service in large area, that is, how to improve the network throughput and energy efficiency under the condition of limited network resources. In order to ensure that users can adaptively access and provide a good user experience, this paper proposes a wireless resource management scheme with high energy efficiency while taking account of throughput. In this paper, the dynamic relationship between SINR and energy efficiency of satellite-ground link is derived, and the effects of end-user location, size of reserve and transmit power of end-user on the performance of satellite-to-ground link, such as SINR, energy efficiency, etc., are analyzed. In this paper, an energy-efficient spectrum resource allocation scheme is proposed, which combines ground soft frequency multiplexing strategy to sort the corresponding frequency band protection level of the cell edge users, giving priority to the higher level of protection frequency band to the more marginal users. The establishment of an energy-efficient satellite-ground spectrum sharing scheme greatly reduces the co-frequency interference from satellites. In addition, interference coordination among ground cellular base stations can improve the system throughput and enable cellular users to obtain a certain anti-jamming gain. Further reduces the satellite interference to the user's influence. Due to the large wear through the wall and partial office work, the INR of the home microbase station is too small for the users in the urban environment. Therefore, in order to improve the energy efficiency, it is not considered in the process of Co MP. This paper presents a channel matrix sparse algorithm for selective beamforming and applies it to H-CRAN scenarios. This algorithm can greatly reduce the power consumption of baseband processing in beamforming process and improve the energy efficiency of the system.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN927

【參考文獻】

相關期刊論文 前2條

1 尹博南;艾元;彭木根;;霧無線接入網(wǎng):架構、原理和挑戰(zhàn)[J];電信科學;2016年06期

2 焦現(xiàn)軍;曹桂興;;MSV-ATC衛(wèi)星移動通信技術研究[J];航天器工程;2007年05期

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本文編號：1867321