现代计算机（专业版）
現代計算機（專業版）
현대계산궤（전업판）
MODERN COMPUTER
2014年
6期
17-24
,共8页
机会网络%混合路由%跨层设计%开销%自适应
機會網絡%混閤路由%跨層設計%開銷%自適應
궤회망락%혼합로유%과층설계%개소%자괄응
Opportunistic Networks%Hybrid Routing%Cross-Layer Design%Overhead%Adaptively
针对机会网络混合路由算法CAR在网络连通域内运行时存在冗余开销以及固定数据分组TTL值影响传送成功率的问题，提出一种高效可靠的机会网络混合路由算法---ERHR。新算法引入OLSRv2算法取代原有的DSDV算法在连通域内进行路由，并对OLSRv2加以改进；同时，提出一种TTL值自适应调整机制优化连通域内数据分组的转发，并且设计一种跨层机制对数据分组的成功发送进行确认，从而达到减少开销、提高数据传送成功率的效果。理论分析和仿真结果表明，与CAR算法相比，ERHR算法的控制开销约减少9%，数据分组传送成功率约提高5%。
針對機會網絡混閤路由算法CAR在網絡連通域內運行時存在冗餘開銷以及固定數據分組TTL值影響傳送成功率的問題，提齣一種高效可靠的機會網絡混閤路由算法---ERHR。新算法引入OLSRv2算法取代原有的DSDV算法在連通域內進行路由，併對OLSRv2加以改進；同時，提齣一種TTL值自適應調整機製優化連通域內數據分組的轉髮，併且設計一種跨層機製對數據分組的成功髮送進行確認，從而達到減少開銷、提高數據傳送成功率的效果。理論分析和倣真結果錶明，與CAR算法相比，ERHR算法的控製開銷約減少9%，數據分組傳送成功率約提高5%。
침대궤회망락혼합로유산법CAR재망락련통역내운행시존재용여개소이급고정수거분조TTL치영향전송성공솔적문제，제출일충고효가고적궤회망락혼합로유산법---ERHR。신산법인입OLSRv2산법취대원유적DSDV산법재련통역내진행로유，병대OLSRv2가이개진；동시，제출일충TTL치자괄응조정궤제우화련통역내수거분조적전발，병차설계일충과층궤제대수거분조적성공발송진행학인，종이체도감소개소、제고수거전송성공솔적효과。이론분석화방진결과표명，여CAR산법상비，ERHR산법적공제개소약감소9%，수거분조전송성공솔약제고5%。
Context-Aware Routing (CAR) algorithm which is the classical opportunistic network hybrid routing algorithm has redundancy control overhead. Furthermore, the delivery success rate is affected by the TTL value of the data packets which are fixed in CAR algorithm. To address these issues, proposes an effective and reliable hybrid routing algorithm, Effective Reliable Hybrid Routing (ERHR). ERHR algo-rithm extends the OLSRv2 algorithm for routing in the network connected domain instead of the original DSDV algorithm. ERHR designs a kind of new mechanism, through adjusting the data packet's TTL adaptively to optimize the forwarding operation within network con-nected domain. It also designs a cross-layer mechanism to acknowledge that whether the data packets have been delivered successfully. Theoretical analysis and simulation results show that ERHR outperforms the classical Opportunity network hybrid routing algorithm (e.g., CAR). The ERHR can reduce at least 9%of the normalized control overhead, and improve 5%of the data packet delivery success rate.
