HSDPA
涓殑鍏抽敭鎶�鏈強鐗规�у垎鏋?/p>
鐩墠
,
绉诲姩閫氫俊棰嗗煙涓瓨鍦ㄥ悇绉嶆棤绾挎帴鍏ユ妧鏈笌鏍?/p>
鍑?/p>
,3gpp
鍗忚鐨?/p>
r99
鐗堟湰鍜?/p>
r4
鐗堟湰鍙互鎻愪緵鏈�楂?/p>
2mbps
鐨勬暟鎹紶杈撻�熺巼
,3gpp2
鍗忚鐨?/p>
ev-do
鐗堟湰鍒欏彲浠ユ彁渚涙渶澶?/p>
2.4mbps
鐨勬暟鎹紶杈撻�熺巼
,wimax(802.16e)
鎶�
鏈垯灏嗘彁楂樻暟鎹紶杈撻�熺巼鍒?/p>
30mbps
銆傚洜姝や负浜嗕娇
wcdma
鍙互涓庡叾浠栨妧鏈浉鎶?/p>
琛?/p>
,wcdma
寮曞叆浜?/p>
hsdpa(high speed downlink packet access)
鎶�鏈?/p>
,
浣夸箣鍙互
鏀寔楂樿揪
14.4mbps
鐨勪笅琛屽嘲鍊奸�熺巼銆?/p>
hsdpa
鍙互浣滀负
wcdma
缃戠粶寤鸿鍚庢湡鎻愰珮
涓嬭瀹归噺鍜屾暟鎹笟鍔￠�熺巼鐨勪竴绉嶉噸瑕佹妧鏈�傛湰鏂囦富瑕佽璁?/p>
hsdpa
鎶�鏈壒寰佷笌鎬?/p>
鑳?/p>
,
鍚屾椂涓?/p>
wimax
鏃犵嚎鎺ュ叆鎶�鏈繘琛屼簡涓�瀹氱殑姣旇緝
,
浠庤�屾湡鏈涜幏寰楀
hsdpa
鏇存竻
鏅扮殑璁よ瘑銆?/p>
hsdpa
鍗忚鏍堢粨鏋?/p>
3gpp
涓浜?/p>
hsdpa
鍗忚瑙勮寖鐨勬弿杩颁富瑕佸湪
25.855
銆?/p>
25.950
鍜?/p>
25.308
涓?/p>
,
涓嬪浘缁欏嚭浜?/p>
hsdpa
鏃犵嚎鎺ュ彛鍗忚缁撴瀯銆備粠鍥句腑鍙?/p>
浠ョ湅鍑?/p>
,nodeb
涓柊澧炲姞浜?/p>
mac
灞傜殑鍔熻兘
,
澧炲姞浜?/p>
mac-hs
鍔熻兘妯″潡
,mac-hs
涓昏
瀹屾垚
harq
鍔熻兘銆佽皟搴﹀拰浼樺厛绾у鐞嗐�?/p>
rnc
缁х画淇濈暀鍘熸湁鐨?/p>
r99/r4
鐨勫姛鑳?/p>
,
鍖呮嫭
rlc
灞傜殑閲嶄紶鎺у埗
,
鑰?/p>
harq
鐨勯噸浼犳満鍒跺湪鐗╃悊灞傚拰
mac
灞備腑瀹炵幇銆?/p>
hsdpa
涓殑鍏抽敭鎶�鏈?/p>
浼楁墍鍛ㄧ煡
,wcdma
涓噰鐢ㄤ簡鍙彉
sf
鎶�鏈拰鍔熺巼鎺?/p>
鍒舵妧鏈潵鍏嬫湇
cdma
鐨勮繙杩戞晥搴?/p>
,
浣嗘槸
hsdpa
娌℃湁閲囩敤
r99
鐗堟湰涓殑閾捐矾鑷�傚簲
鎶�鏈?/p>
,
鑰岄噰鐢ㄤ簡鑷�傚簲璋冭妭閫熷害鏇村揩鐨勮嚜閫傚簲缂栫爜璋冨埗鎶�鏈?/p>
(amc, adaptive
modulation and coding)
銆佹贩鍚堣嚜鍔ㄩ噸浼?/p>
(harq, hybrid arq)
鍜屽揩閫熻祫婧愯皟搴?/p>
绠楁硶
,
杩欎富瑕佹槸涓轰簡杈惧埌楂橀�熶笅琛屽垎缁勬暟鎹�熺巼鍜屽噺灏戞椂寤剁殑鐩殑銆?/p>
1.
鑷�傚簲缂栫爜璋冨埗
(amc) amc
鏄牴鎹棤绾夸俊閬撳彉鍖栭�夋嫨鍚堥�傜殑璋冨埗鍜?/p>
缂栫爜鏂瑰紡
,
缃戠粶渚ф牴鎹敤鎴风灛鏃朵俊閬撹川閲忕姸鍐靛拰鐩墠鏃犵嚎璧勬簮
,
閫夋嫨鏈�鍚堥�傜殑涓?/p>
琛岄摼璺皟鍒跺拰缂栫爜鏂瑰紡
,
浣跨敤鎴疯揪鍒板敖閲忛珮鐨勬暟鎹悶鍚愮巼銆傚綋鐢ㄦ埛澶勪簬鏈夊埄鐨勯�?/p>
淇″湴鐐规椂
(
濡傞潬杩?/p>
nodeb
鎴栧瓨鍦ㄨ璺濋摼璺?/p>
),
鐢ㄦ埛鏁版嵁鍙戦�佸彲浠ラ噰鐢ㄩ珮闃惰皟鍒跺拰楂?/p>
閫熺巼鐨勪俊閬撶紪鐮佹柟寮?/p>
,
渚嬪
:16qam
鍜?/p>
3/4
缂栫爜閫熺巼
,
浠庤�屽緱鍒伴珮鐨勫嘲鍊奸�熺巼
;
鑰?/p>
褰撶敤鎴峰浜庝笉鍒╃殑閫氫俊鍦扮偣鏃?/p>
(
濡備綅浜庡皬鍖鸿竟缂樻垨鑰呬俊閬撴繁琛拌惤
),
缃戠粶渚у垯閫夊彇
浣庨樁璋冨埗鏂瑰紡鍜屼綆閫熺巼鐨勪俊閬撶紪鐮佹柟妗?/p>
,
渚嬪
:qpsk
鍜?/p>
1/4
缂栫爜閫熺巼
,
鏉ヤ繚璇侀�?/p>
淇¤川閲忋�?/p>
2.harq
鎶�鏈?/p>
harq
鏄?/p>
hsdpa
绯荤粺涓噰鐢ㄧ殑鍙堜竴绉嶆柊鎶�鏈?/p>
,
瀹冨彲浠ユ彁楂?/p>
绯荤粺鎬ц兘
,
骞跺彲鐏垫椿鍦拌皟鏁存湁鏁堢紪鐮侀�熺巼
,
杩樺彲浠ヨˉ鍋跨敱浜庨噰鐢ㄩ摼璺�傞厤鎵�甯︽潵
鐨勮鐮併�?/p>
hsdpa
灏?/p>
amc
鍜?/p>
harq
鎶�鏈粨鍚堣捣鏉ュ彲浠ヨ揪鍒版洿濂界殑閾捐矾鑷�傚簲鏁堟灉銆?/p>
hsdpa
鍏堥�氳繃
amc
鎻愪緵绮楃暐鐨勬暟鎹�熺巼閫夋嫨鏂规
,
鐒跺悗鍐嶄娇鐢?/p>
harq
鎶�鏈潵鎻愪緵
绮剧‘鐨勯�熺巼璋冭妭
,
浠庤�屾彁楂樿嚜閫傚簲璋冭妭鐨勭簿搴﹀拰鎻愰珮璧勬簮鍒╃敤鐜囥�?/p>
harq
鏈哄埗鏈?/p>
韬殑瀹氫箟鏄皢
fec
鍜?/p>
arq
缁撳悎璧锋潵鐨勪竴绉嶅樊閿欐帶鍒舵柟妗?/p>
,harq
鏈哄埗鐨勫舰寮忓緢澶?/p>
,
鑰?/p>
hsdpa
鎶�鏈腑涓昏鏄噰鐢ㄤ笁绉嶉�掑鍐椾綑鐨?/p>
harq
鏈哄埗
:type-i harq,type-ii
harq,type-iii harq
銆傚叾涓?/p>
: type-i harq:
涓昏閲囩敤浜?/p>
chase
鍚堝苟绠楁硶
,
杩欑绠?/p>
娉曟槸
chase
鍗氬＋鍦?/p>
1985
骞存彁鍑?/p>
,
鍙戦�佹柟姣忔閮藉彂閫佹暣涓畬鏁寸殑缂栫爜鐮佸瓧
,
鎺ユ敹绔?/p>
灏嗘瘡娆℃敹鍒扮殑鏁版嵁鍖呬笌涔嬪墠鏀跺埌鐨勬墍鏈夋暟鎹寘杩涜
chase
鍚堝苟
,
缁勫悎鎴愪竴涓叿鏈?/p>
鏇村己绾犻敊鑳藉姏鐨勭爜瀛?/p>
,
浠庤�岃揪鍒伴�掑鍐椾綑鐨勭洰鐨勩�?/p>