[調(diào)研報(bào)告]td-scdma技術(shù)與市場(chǎng)分析(編輯修改稿)
2025-04-19 02:21 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 效應(yīng)在TDSCDMA中不明顯，因而TDSCDMA的網(wǎng)絡(luò)規(guī)劃優(yōu)化相對(duì)簡(jiǎn)單，網(wǎng)絡(luò)性能易于控制和掌握，用戶的業(yè)務(wù)接入質(zhì)量穩(wěn)定。在用戶容量增加而必須對(duì)網(wǎng)絡(luò)擴(kuò)容時(shí)，二次網(wǎng)絡(luò)規(guī)劃方便，可大大降低網(wǎng)絡(luò)擴(kuò)容的費(fèi)用。第二，TDSCDMA采用接力切換而不是軟切換技術(shù)，可節(jié)省15%～20%的網(wǎng)絡(luò)傳輸資源，降低運(yùn)營(yíng)成本。第三，采用軟件無(wú)線電技術(shù)，在系統(tǒng)功能增加、技術(shù)升級(jí)時(shí)，只需進(jìn)行軟件升級(jí)而不需要更換設(shè)備硬件，這樣也就降低了系統(tǒng)維護(hù)與升級(jí)的成本。第四，采用了多天線技術(shù)，在基站射頻部分具有天然的容災(zāi)容錯(cuò)能力，設(shè)備失效風(fēng)險(xiǎn)分散化，設(shè)備維修費(fèi)用低。第五，在運(yùn)營(yíng)商提出設(shè)備需求拓展或變更時(shí)，由于TDSCDMA從標(biāo)準(zhǔn)到設(shè)備主要是由國(guó)內(nèi)廠家控制，設(shè)備供應(yīng)商有條件以合理的費(fèi)用及時(shí)地滿足運(yùn)營(yíng)商的設(shè)備升級(jí)需求。第六，TDSCDMA的各種業(yè)務(wù)覆蓋距離基本相同，不會(huì)造成WCDMA系統(tǒng)對(duì)高速業(yè)務(wù)覆蓋不連續(xù)的問(wèn)題。TDSCDMA對(duì)用戶的服務(wù)質(zhì)量會(huì)更有保證。 First,thankstoits TD technology and smart antenna, TDSCDMA greatly reduces selfinterference and mutual interference of CDMA, and the sniff effect of the FDD system is not conspicuous in TDSCDMA, therefore, TDSCDMA network planning and optimization are relatively simple, network performance is easy to be controlled and subscriber service access quality is stable. When subscriber capacity increase necessities network capacity expansion, secondary network planning is easy, greatly cutting the cost of network capacity expansion. Second, TDSCDMA adopts relay switch instead of softswitch technology, which can save 15%20% network transmission resource and reduce operational cost. Third, adopting software defined radio technology, when system functions increase and technology upgrades, only software upgrading is needed and no hardware upgrading is required, thus reducing system maintenance and upgrading costs. Fourth, adopting multiantenna technology gives the radio frequency part of base station natural disaster/faulttolerant capability, decentralizes risks of equipment failure, and lowers equipment maintenance cost. Fifth, when operators put forth their demand for equipment expansion or change, for TDSCDMA from standard to equipment is manly controlled by domestic manufacturers, equipment providers are in a position to timely meet operators’ equipment upgrading requirement at a reasonable cost. Sixth, TDSCDMA has largely identical coverage distance for various services, will not cause the problem of coverage discontinuity of the WCDMA system for highspeed services. TDSCDMA will provide subscribers more assured quality of service. 組網(wǎng)靈活 Flexible Networking 3G的頻率特性及其支持業(yè)務(wù)的特點(diǎn)，導(dǎo)致2G的移動(dòng)設(shè)備組網(wǎng)經(jīng)驗(yàn)已不再適用于3G的情況。3G必須支持高容量的數(shù)據(jù)業(yè)務(wù)，可采用立體分層組網(wǎng)方式。如何減少覆蓋盲點(diǎn)以及解決好室內(nèi)覆蓋問(wèn)題將是今后運(yùn)營(yíng)企業(yè)要面臨的巨大挑戰(zhàn)。 For 3G’sfrequencycharacteristic and service support of 3G, the experience in mobile equipment networking of 2G is no longer applicable to 3G. 3G must support high capacity data services, and may adopt stereo hierarchical networking. How to decrease coverage blind and address the issue of indoor coverage will be a big cha
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