.
.
涓�銆佸崟閫夐
(1)
LTE
鍙敮鎸佺殑甯﹀鏄灏?/p>
(
E
)
1.4M 3M 5M 10M 15M 20M
A 3M B 10M C 15M D 20M E 1.4M-20M
鐨勭伒娲诲甫瀹?/p>
澶囨敞锛?/p>
鏀寔鐏垫椿鐨勭郴缁熷甫瀹介厤缃紝鏀寔
1.4MHz
銆?/p>
3MHz
銆?/p>
5MHz
銆?/p>
10MHz
銆?/p>
15MHz
銆?/p>
20MHz
甯﹀锛屾敮鎸佹垚瀵瑰拰闈炴垚瀵归璋憋紱
(2)
LTE
鑳借揪鍒扮殑宄板�奸�熺巼鏄灏?/p>
(
B
)
A
涓婅
10M
锛屼笅琛?/p>
30M
B
涓婅
50M
锛屼笅琛?/p>
100M
澶囨敞锛?/p>
鏄捐憲鐨勬彁楂樺嘲鍊间紶杈撴暟鎹�熺巼锛屼緥濡備笅琛岄摼璺揪鍒?/p>
100Mb/s
锛屼笂琛岄摼璺揪鍒?
50Mb/s
锛?/p>
C
涓婅
50M
锛屼笅琛?/p>
70M
D
涓婅
20M
锛屼笅琛?/p>
50M
12*14=168*100*6=100800*2=201.6*0.86=173*0.6kbit/ms=103M/s=103Mbps
*(3) LTE
鐨勪笂琛屼紶杈撴柟妗堟槸
( C )
锛屼笅琛屼紶杈撴柟妗堟槸
( D )
A OFDM
璋冮澶嶇敤鎶�鏈?/p>
/
姝ｄ氦棰戝垎澶嶇敤鎶�鏈?/p>
B MIMO
澶氳緭鍏ュ杈撳嚭
C SC-FDMA
鍗曡浇娉㈤鍒嗗鍧�
D OFDMA
姝ｄ氦棰戝垎澶氬潃
FDMA
棰戝垎澶氬潃
澶囨敞锛?/p>
涓嬭澶氬潃鎺ュ叆鎶�鏈?/p>
OFDMA
锛?/p>
涓婅澶氬潃鎺ュ叆鎶�鏈?/p>
SC-FDMA(Single
Carrier-FDMA)
锛?/p>
(4)
浠ヤ笅鍑犵绔欓棿鍒囨崲涓紝瑕佹眰蹇呴』浣跨敤鍚屼竴
MME
鐨勫垏鎹㈢被鍨嬫槸锛?/p>
(
A
)C
A
S1
鍒囨崲
B
LTE&UMTS
鍒囨崲
C
X2
鍒囨崲
D LTE&GERAN
鍒囨崲
X2
鍒囨崲涓嶉渶瑕佷娇鐢ㄥ埌
S1
鎺ュ彛锛屽洜姝ゅ繀椤绘槸鍚屼竴
MME
涓嬬殑鍩虹珯銆?/p>
*(5) LTE
绯荤粺鏋舵瀯涓紝
eNodeB
鍜屾牳蹇冪綉鐩存帴閫氳繃
(
B
)
鎺ュ彛杩涜閫氫俊锛?/p>
eNodeB
涔?/p>
闂撮�氳繃
(
C
)
鎺ュ彛杩涜閫氫俊
A Uu B S1 C X2 D X1
(6) LTE
鍗忚鏍堜腑锛屽摢涓�灞傚叿鏈夋棤绾胯祫婧愮鐞嗙殑鍔熻兘
( C )
A PDCP B RLC C RRC D SCTP E MAC F UDP
澶囨敞锛?/p>
PDCP
鍒嗙粍鏁版嵁姹囪仛灞傚崗璁?/p>
RLC
鏃犵嚎閾捐矾鎺у埗
RRC
鏃犵嚎璧勬簮鎺у埗
MAC
浠嬭川
鎺ュ叆鎺у埗