LTE , (Dynamic Packet Scheduler - ). .3, () 1 . . ( - ). CQI, . , HARQ, , . .
FDPS (Frequency Domain Packet Scheduling). FDPS . 8.4.
.8.4.
(CQI), UE, , . FDPS 40%- UE, . , - CQI. .
, , eNB. (. 8.5). (fractional).
.8.5.
, , . LTE ICIC (Inter-Cell Interference Control). ICIC . 2, eNB, 2- (. 2.3). eNB eNB , . , eNB 2. .
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3 ( 3) .8.6. eNB (.8.7), , 3- . .8.7 , / , eNB ( . 8.7). / (), 8 10 .
. 8.6.
. 8.7. /
, . (. 8.8).
. 8.8.
, UE, eNB, ( 1), . , , 3, 1/3 . . 8.9. , 1, . UE ( ) / , (. 8.7). , , eNB , - , .
. 8.9. /
.4, , - . (scheduler). , . . , eNB , / . , UE, , .
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, ( ) . - .
. m - n -
, (8.1)
Rm(n) , - / ,
Tm(n) . Tm(n+1) (n+1) -
, n ,
, n .
tc : , . tc, , ( ). , (tc ), , Rm(n).
tc ( ∞), - .
, (8.2)
11. IEEE 802.16 ‒ WiMAX.
WiMAX
WiMAX Worldwide interoperability for Microwave Access, 2001. MAN (Metropolitan Area Network). , WiMAX Wi-Fi (IEEE802.11) LAN (Local Area Network), , .
WiMAX 2 . , (SC Single Carrier) OFDM (Orthogonal Frequency Division Multiplexing). SC , : , . SC .
OFDM, , 2004. WiMAX: 802.16-2004. OFDM. OFDM: (SOFDM), (SOFDMA ‒ Scalable OFDM Access). . WiMAX WiMAX 802.16. 802.16 WiMAX. 4 . 802.16i 802.16j. , . WiMAX 29.05.2009: IEEE Standard for Local and metropolitan area networks. Part 16: Air Interface for Broadband Wireless Access Systems [27].
WiMAX 802.16m. 100 / . WiMAX . 11.1.
11.1
, | , | ||||
802.16 | 12.2001 | 11 - 66 | (SC) | 20, 25, 28 | |
802.16-2004 | 06.2004 | 2 - 11 | SC OFDM (256)[8] | 1,75; 3,5; 7; 14; 1,25; 5; 10; 15; 8,75 | |
802.16 | 12.2005 | 11 - 66 2 - 11 (.) 2 - 6 (.) | SC OFDM (256), SOFDM (128, 512, 1024, 2048) | 1,25; 5; 10; 20 | |
802.16k | 11 - 66 2 11 (.) | SC OFDM (256), SOFDM (128, 512, 1024, 2048) | 1,25; 5; 10; 20 | ||
802.16-2009 | + 802.16i | ||||
802.16j | + | ||||
802.16m | 3,6 | SOFDMA | 1 ‒ 20 |
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