电子学报
電子學報
전자학보
ACTA ELECTRONICA SINICA
2014年
6期
1147-1156
,共10页
认知无线电%实际环境%M/G/1%系统代价%打断次数
認知無線電%實際環境%M/G/1%繫統代價%打斷次數
인지무선전%실제배경%M/G/1%계통대개%타단차수
cognitive radio%realistic environment%M/G/1%systemic cost%interrupted times
本文首先根据认知无线电实际环境，在一类虚警事件和三类漏检事件的影响下，对M/G/1排队模型进行修正，给出主用户及次级用户数据传输时间的一阶矩和二阶矩的解析解，得到M/G/1-R （M/G/1-Revised ）排队模型。其次在多优先级次级用户情境下，提出一种基于系统代价的冒泡式排队接入方案（B-M/G/1-R ，Bubble-M/G/1-Re-vised），给出该方案能够最小化系统代价的证明过程。仿真与数值计算验证了M/G/1-R的有效性，在实际认知无线电环境下，B-M/G/1-R能够获得最小的系统代价和次级用户数据传输中断次数。
本文首先根據認知無線電實際環境，在一類虛警事件和三類漏檢事件的影響下，對M/G/1排隊模型進行脩正，給齣主用戶及次級用戶數據傳輸時間的一階矩和二階矩的解析解，得到M/G/1-R （M/G/1-Revised ）排隊模型。其次在多優先級次級用戶情境下，提齣一種基于繫統代價的冒泡式排隊接入方案（B-M/G/1-R ，Bubble-M/G/1-Re-vised），給齣該方案能夠最小化繫統代價的證明過程。倣真與數值計算驗證瞭M/G/1-R的有效性，在實際認知無線電環境下，B-M/G/1-R能夠穫得最小的繫統代價和次級用戶數據傳輸中斷次數。
본문수선근거인지무선전실제배경，재일류허경사건화삼류루검사건적영향하，대M/G/1배대모형진행수정，급출주용호급차급용호수거전수시간적일계구화이계구적해석해，득도M/G/1-R （M/G/1-Revised ）배대모형。기차재다우선급차급용호정경하，제출일충기우계통대개적모포식배대접입방안（B-M/G/1-R ，Bubble-M/G/1-Re-vised），급출해방안능구최소화계통대개적증명과정。방진여수치계산험증료M/G/1-R적유효성，재실제인지무선전배경하，B-M/G/1-R능구획득최소적계통대개화차급용호수거전수중단차수。
This paper analyzes the impact on the average data transmission time of primary user (PU ) and secondary users (SU) ,which is caused by the one kind of false alarm event and three kinds of undetected events in realistic cognitive radio (CR) environment .Based on the analysis ,the M/G/1 queue model is rectified and the M/G/1-R queue model is obtained ,in which the first moment and the second moment of data transmission time of PU and SU are derived .And a multi-priority bubble-queuing ac-cess scheme (B-M/G/1-R) based on systemic cost is proposed whose sorting method can minimize the systemic cost .Analytical re-sults and simulation confirm the validity of M/G/1-R model .Also in realistic CR environment ,B-M/G/1-R presents the smallest systemic cost and SU data transmission interrupted times .
