ÎÊÌâÒÑ¿ªÆô
(ÆÕͨÎÊÌâ)
HSDPAÊÇʲôÒâ˼£¿
ÌáÎÊÕß: chenqc ÌáÎÊʱ¼ä: 2009-04-30
• HS-PDSCHÅäÖÃ15ÌõÂëµÀ£¬HS-SCCHÅäÖÃ1ÌõÂëµÀ£¬ÄÇôÔÚÕâÖÖÇé¿öϹ»½ÓÈ루£©¸öHSDPAÓû§ 2017-04-17
• HSDPAµÄSF 2017-04-12
• »ªÎªWCDMAͬվÏÂСÇøHSDPAËÙÂʲ»Ò»Ö 2016-05-26
• »ªÎªWCDMAÖÐͬһ¸ö»ùվϵÄСÇøHSDPAËÙÂʲ»Ò»Ñù 2016-05-26
• WCDMA DC-HSDPA¿ª¾ÖÖ¸µ¼Êé¡£ 2015-08-22
• WCDMAHSDPAÌáËÙ·½°¸ 2015-05-07
• ÔÚLTEÖУ¬CQIÊÇ4bit£¬¶øÔÚHSDPAÇé¿öÏ£¬CQIÊÇ5bit£¬ÎªÊ²Ã´ÄØ 2015-04-01
• ÔÚLTEÖУ¬CQIÊÇ4bit£¬¶øÔÚHSDPAÇé¿öÏ£¬CQIÊÇ5bit 2015-04-01
• HSDPAµÄSF 2017-04-12
• »ªÎªWCDMAͬվÏÂСÇøHSDPAËÙÂʲ»Ò»Ö 2016-05-26
• »ªÎªWCDMAÖÐͬһ¸ö»ùվϵÄСÇøHSDPAËÙÂʲ»Ò»Ñù 2016-05-26
• WCDMA DC-HSDPA¿ª¾ÖÖ¸µ¼Êé¡£ 2015-08-22
• WCDMAHSDPAÌáËÙ·½°¸ 2015-05-07
• ÔÚLTEÖУ¬CQIÊÇ4bit£¬¶øÔÚHSDPAÇé¿öÏ£¬CQIÊÇ5bit£¬ÎªÊ²Ã´ÄØ 2015-04-01
• ÔÚLTEÖУ¬CQIÊÇ4bit£¬¶øÔÚHSDPAÇé¿öÏ£¬CQIÊÇ5bit 2015-04-01
ÎÊÌâ´ð°¸
( 7 )
HSDPA£¨High Speed Downlink Packet Access£©:¸ßËÙÏÂÐзÖ×é½ÓÈë¼¼Êõ
»Ø´ðÕߣº
exloding99
»Ø´ðʱ¼ä£º2009-04-30 15:01
46 43
HSDPA£¬Ö¸¸ßËÙÏÂÐзÖ×é½ÓÈ루High Speed Downlink Packet Access£©£¬ÓÃÓÚʵÏÖ
TD-SCDMA ÍøÂç¸ßËÙÏÂÐÐÊý¾ÝÒµÎñ¡£
TD-SCDMA ÍøÂç¸ßËÙÏÂÐÐÊý¾ÝÒµÎñ¡£
»Ø´ðÕߣº
lamchunhuii
»Ø´ðʱ¼ä£º2009-04-30 15:02
46 40
HSDPA£¬Ö¸¸ßËÙÏÂÐзÖ×é½ÓÈ루High Speed Downlink Packet Access£©£¬ÎªÁËÂú×ãÓû§ÈÕÒæÔö³¤µÄ¶Ô¸ßËÙ·Ö×éÊý¾ÝÒµÎñµÄÐèÇó£¬3GPPÔÚ3GµÄR5±ê×¼ÖÐÒýÈëµÄм¼Êõ£¬¼´HSDPA¡£¾ÍWCDMAºÍTD-SCDMA¶øÑÔ£¬HSDPAËù²ÉÓõĹؼü¼¼ÊõÊÇ»ù±¾Ò»Öµġ£WCDMAµ¥Ôز¨ÊµÏÖµÄÏÂÐзåÖµËÙÂÊΪ14.4Mbps£¬TD-SCDMAµ¥Ôز¨ÊµÏÖµÄÏÂÐзåÖµËÙÂÊΪ2.8Mbps£¬²ÉÓÃÁËNƵµã¼¼Êõºó·åÖµËÙÂÊΪN*2.8Mbps¡£ÎªÁËÊÊÓ¦¸ßËÙÏÂÐÐËÙÂÊ£¬3GPPÓÖÌá³öÁËHSUPA£¨High Speed Uplink Packet Access£©£¬Ê¹µÃWCDMAºÍTD-SCDMAµÄÉÏÐзåÖµËÙÂÊ·Ö±ð´ïµ½ÁË5.76MbpsºÍ2.2Mpbs¡£HSDPAºÍHSUPAºÏÔÚÒ»Æð³ÉΪHSPA£¬ÔÙ½øÒ»²½Ñݽø¾Íµ½ÁËLTE£¨Long Term Evolution£©¡£
»Ø´ðÕߣº
tubulvxing
»Ø´ðʱ¼ä£º2009-04-30 16:04
43 44
HSDPA£¨High Speed Downlink Packet Access£©±íʾ¸ßËÙÏÂÐзÖ×é½ÓÈë¼¼Êõ¡£
¡¡¡¡ÔÚ3GµÄÈý´ó±ê×¼µÄ½ÇÖðÖУ¬WCDMAÉÌÓÃÔÚÔËÓªÉ̵ÄÖ§³ÖÊýÁ¿ÉÏÈ¡µÃÁËÁìÏÈ£¬µ«ÔÚÆäÍøÂçËùÖ§³ÖµÄÊý¾ÝËÙÂÊÉÏÈ´³¤ÆÚÍ£ÁôÔÚÀíÂÛÉϵÄ384kbpsˮƽ£¬¶øÆäÍøÂ罨ÉèÒ²Ò»Ö±´¦ÓÚ»ºÂý·¢Õ¹µÄ״̬¡£
¡¡¡¡Óë´ËÐγÉÏÊÃ÷¶ÔÕÕµÄÊÇ£¬ÔÚº«¹ú¡¢ÈÕ±¾µÈ¹ú¼ÒʵÏÖÉÌÓõÄCDMA2000 1X EV-DOÍøÂçϵͳÉÏ£¬ÒѾʵÏÖÁË2.4MbpsµÄ·åÖµËÙÂÊ£¬Æä¿í´ø½ÓÈë·þÎñÄÜΪ¿Í»§Ìṩ300kbps-500kbpsƽ¾ùÏÂÔØËÙÂÊ£¬Õâ×ãÒÔÓëÓÐÏß¿í´øµÄËÙÂÊÏàæÇÃÀ¡£
¡¡¡¡±È½Ï¶øÑÔ£¬Í¬ÎªÒѾʵÏÖÉÌÓõÄ3GÍøÂçϵͳ£¬Ãæ¶ÔÏÖÓеÄ3GÒµÎñ£¬WCDMAÒѾÉÔÏÔÁ¦²»´ÓÐÄ£¬ÔÚÊý¾Ý´«ÊäËÙÂÊÉϵľ޴óÂä²î£¬ÒÔ¼°ÓÉ´Ë´øÀ´µÄÒµÎñÄÜÁ¦ÉϵÄÈõÊÆ£¬×ÔȻʹµÃWCDMAÕóÓª²»¸ÊÂäºó£¬±ØÐëÑ°ÕÒÒ»Öָϳ¬CDMA2000 1X EV-DOµÄÓÐÁ¦ÎäÆ÷¡£
¡¡¡¡HSDPA(¸ßËÙÏÂÐзÖ×é½ÓÈ룬High Speed Downlink Packages Access)¼¼ÊõÊÇʵÏÖÌá¸ßWCDMAÍøÂç¸ßËÙÏÂÐÐÊý¾Ý´«ÊäËÙÂÊ×îΪÖØÒªµÄ¼¼Êõ£¬ÊÇ3GPPÔÚR5ÐÒéÖÐΪÁËÂú×ãÉÏÏÂÐÐÊý¾ÝÒµÎñ²»¶Ô³ÆµÄÐèÇóÌá³öÀ´µÄ£¬Ëü¿ÉÒÔÔÚ²»¸Ä±äÒѾ½¨ÉèµÄWCDMAϵͳÍøÂç½á¹¹µÄ»ù´¡ÉÏ£¬´ó´óÌá¸ßÓû§ÏÂÐÐÊý¾ÝÒµÎñËÙÂÊ(ÀíÂÛ×î´óÖµ¿É´ï14.4Mbps)£¬¸Ã¼¼ÊõÊÇWCDMAÍøÂ罨ÉèÖÐÌá¸ßÏÂÐÐÈÝÁ¿ºÍÊý¾ÝÒµÎñËÙÂʵÄÒ»ÖÖÖØÒª¼¼Êõ¡£
¡¡¡¡¶Ô¸ßËÙÒƶ¯·Ö×éÊý¾ÝÒµÎñµÄÖ§³ÖÄÜÁ¦ÊÇ3Gϵͳ×îÖØÒªµÄÌصãÖ®Ò»¡£
¡¡¡¡WCDMA R99°æ±¾¿ÉÒÔÌṩ384kbpsµÄÊý¾ÝËÙÂÊ£¬Õâ¸öËÙÂʶÔÓڴ󲿷ÖÏÖÓеķÖ×éÒµÎñ¶øÑÔ»ù±¾¹»Óá£È»¶ø£¬¶ÔÓÚÐí¶à¶ÔÁ÷Á¿ºÍ³ÙÑÓÒªÇó½Ï¸ßµÄÊý¾ÝÒµÎñÈçÊÓƵ¡¢Á÷ýÌåºÍÏÂÔصȣ¬ÐèҪϵͳÌṩ¸ü¸ßµÄ´«ÊäËÙÂʺ͸ü¶ÌµÄʱÑÓ¡£
¡¡¡¡ÔÚ3GµÄÈý´ó±ê×¼µÄ½ÇÖðÖУ¬WCDMAÉÌÓÃÔÚÔËÓªÉ̵ÄÖ§³ÖÊýÁ¿ÉÏÈ¡µÃÁËÁìÏÈ£¬µ«ÔÚÆäÍøÂçËùÖ§³ÖµÄÊý¾ÝËÙÂÊÉÏÈ´³¤ÆÚÍ£ÁôÔÚÀíÂÛÉϵÄ384kbpsˮƽ£¬¶øÆäÍøÂ罨ÉèÒ²Ò»Ö±´¦ÓÚ»ºÂý·¢Õ¹µÄ״̬¡£
¡¡¡¡Óë´ËÐγÉÏÊÃ÷¶ÔÕÕµÄÊÇ£¬ÔÚº«¹ú¡¢ÈÕ±¾µÈ¹ú¼ÒʵÏÖÉÌÓõÄCDMA2000 1X EV-DOÍøÂçϵͳÉÏ£¬ÒѾʵÏÖÁË2.4MbpsµÄ·åÖµËÙÂÊ£¬Æä¿í´ø½ÓÈë·þÎñÄÜΪ¿Í»§Ìṩ300kbps-500kbpsƽ¾ùÏÂÔØËÙÂÊ£¬Õâ×ãÒÔÓëÓÐÏß¿í´øµÄËÙÂÊÏàæÇÃÀ¡£
¡¡¡¡±È½Ï¶øÑÔ£¬Í¬ÎªÒѾʵÏÖÉÌÓõÄ3GÍøÂçϵͳ£¬Ãæ¶ÔÏÖÓеÄ3GÒµÎñ£¬WCDMAÒѾÉÔÏÔÁ¦²»´ÓÐÄ£¬ÔÚÊý¾Ý´«ÊäËÙÂÊÉϵľ޴óÂä²î£¬ÒÔ¼°ÓÉ´Ë´øÀ´µÄÒµÎñÄÜÁ¦ÉϵÄÈõÊÆ£¬×ÔȻʹµÃWCDMAÕóÓª²»¸ÊÂäºó£¬±ØÐëÑ°ÕÒÒ»Öָϳ¬CDMA2000 1X EV-DOµÄÓÐÁ¦ÎäÆ÷¡£
¡¡¡¡HSDPA(¸ßËÙÏÂÐзÖ×é½ÓÈ룬High Speed Downlink Packages Access)¼¼ÊõÊÇʵÏÖÌá¸ßWCDMAÍøÂç¸ßËÙÏÂÐÐÊý¾Ý´«ÊäËÙÂÊ×îΪÖØÒªµÄ¼¼Êõ£¬ÊÇ3GPPÔÚR5ÐÒéÖÐΪÁËÂú×ãÉÏÏÂÐÐÊý¾ÝÒµÎñ²»¶Ô³ÆµÄÐèÇóÌá³öÀ´µÄ£¬Ëü¿ÉÒÔÔÚ²»¸Ä±äÒѾ½¨ÉèµÄWCDMAϵͳÍøÂç½á¹¹µÄ»ù´¡ÉÏ£¬´ó´óÌá¸ßÓû§ÏÂÐÐÊý¾ÝÒµÎñËÙÂÊ(ÀíÂÛ×î´óÖµ¿É´ï14.4Mbps)£¬¸Ã¼¼ÊõÊÇWCDMAÍøÂ罨ÉèÖÐÌá¸ßÏÂÐÐÈÝÁ¿ºÍÊý¾ÝÒµÎñËÙÂʵÄÒ»ÖÖÖØÒª¼¼Êõ¡£
¡¡¡¡¶Ô¸ßËÙÒƶ¯·Ö×éÊý¾ÝÒµÎñµÄÖ§³ÖÄÜÁ¦ÊÇ3Gϵͳ×îÖØÒªµÄÌصãÖ®Ò»¡£
¡¡¡¡WCDMA R99°æ±¾¿ÉÒÔÌṩ384kbpsµÄÊý¾ÝËÙÂÊ£¬Õâ¸öËÙÂʶÔÓڴ󲿷ÖÏÖÓеķÖ×éÒµÎñ¶øÑÔ»ù±¾¹»Óá£È»¶ø£¬¶ÔÓÚÐí¶à¶ÔÁ÷Á¿ºÍ³ÙÑÓÒªÇó½Ï¸ßµÄÊý¾ÝÒµÎñÈçÊÓƵ¡¢Á÷ýÌåºÍÏÂÔصȣ¬ÐèҪϵͳÌṩ¸ü¸ßµÄ´«ÊäËÙÂʺ͸ü¶ÌµÄʱÑÓ¡£
»Ø´ðÕߣº
chendaji
»Ø´ðʱ¼ä£º2009-04-30 18:31
40 46
ÒÔÏÂÊÇÕë¶ÔHSDPA¼¼ÊõÊÕ¼¯µ½µÃ×ÊÁÏ£¬¸öÈ˾õµÃÒѾ¶ÔHSDPA¼¼ÊõÓÐÏêϸµÄ˵Ã÷£¬Â¥ÉÏÒ²ÓмòÃ÷¶óÒªµÄ¶¨Ò壺
HSDPA¼¼ÊõÊÇʲô£¿
¸ßËÙÏÂÐзÖ×é½ÓÈ루 HSDPA £©Ò²±»³ÆΪ¸ßËÙÏÂÐÐÐÒé·ÃÎÊ¡£ HSDPAÊÇÒ»ÖÖÐÒ飬ÓÃÓÚÒƶ¯µç»°¡£ ÕâÊǵÚÈý´ú£¨ 3G £©¸ßËÙ·Ö×é½ÓÈë¼¼Êõ£¬Ö¼ÔÚ¼Ó¿ìÍøÂçÈÝÁ¿ºÍÊý¾Ý´«ÊäËÙÂʵÄÒƶ¯µç»°¡£HSDPAÊÇÓë¸÷ÖÖͨÓÃÒƶ¯Í¨ÐÅϵͳ£¨UMTS£©ÍøÂç¡£ ÕâЩÎÊÌâ°üÀ¨È«ÇòÒƶ¯ÏµÍ³(GSM )µÄͨÐÅ¡£
HSDPA£¨¸ßËÙÏÂÐзÖ×é½ÓÈ룬High Speed Downlink Packages Access£©¼¼Êõ£¬ÊÇ3GPPÔÚR5ÐÒéÖÐÒýÈëµÄ£¬Ëü¿ÉÒÔÔÚ²»¸Ä±äWCDMAϵͳÍøÂç½á¹¹µÄ»ù´¡ÉÏ£¬´ó´óÌá¸ßÓû§ÏÂÐÐÊý¾ÝÒµÎñËÙÂÊ£¨ÀíÂÛ·åÖµ¿É´ï14.4Mbit/s£©£¬¼«´óµØ¸ÄÉÆÁËWCDMA²»Ö§³ÖÊý¾ÝÃܼ¯ÐÍÓ¦ÓõÄȱÏÝ£¬ÊÇWCDMAÍøÂ罨ÉèÖÐÌá¸ßÏÂÐÐÈÝÁ¿ºÍÊý¾ÝÒµÎñËÙÂʵÄÒ»ÖÖÖØÒª¼¼Êõ¡£
ΪÁË´ïµ½Ìá¸ßÏÂÐзÖ×éÊý¾ÝËÙÂʺͼõÉÙʱÑÓµÄÄ¿µÄ£¬HSDPAÖ÷Òª²ÉÓÃÁË×ÔÊÊÓ¦µÄ±àÂëºÍµ÷ÖÆ(AMC¢Ÿ adaptive modulation and coding)¡¢¿ìËÙ»ìºÏ×Ô¶¯ÖØ´«(HARQ¢Ÿ hybrid ARQ)ºÍ¿ìËÙµ÷¶È¼¼Êõ¡£Æäʵ£¬ÉÏÊöÈýÖÖ¼¼Êõ¶¼ÊôÓÚÁ´Â·×ÔÊÊÓ¦¼¼Êõ£¬Ò²¿ÉÒÔ¿´³ÉÊÇWCDMA¼¼ÊõÖпɱäÀ©Æµ¼¼ÊõºÍ¹¦ÂÊ¿ØÖƼ¼ÊõµÄ½øÒ»²½ÌáÉý¡£
Ä¿Ç°£¬ HSDPAÄܹ»Ö§³ÖËÙ¶ÈΪ1.8 MbpsµÄËÙÂÊ¿É´ï14.4 Mbps ¡£ ËäÈ»Õâ²»ÊǷdz£¿ìÏà±È£¬¸÷ÖÖÓÐÏßÍøÂ磬ËüÊÇÒ»¸öÖØÒªµÄÀï³Ì±®¿¼ÂǵÄËÙ¶ÈÌṩ¸ø·äÎѼ¼Êõ¡£
ËäÈ»HSDPAÊÇÖ÷Ҫȷ¶¨ÆäÏÂÐÐËٶȣ¬µ«ËüÒ²ÓÐÄÜÁ¦½«´ó´óÍØչתÒÆÄÜÁ¦¡£ HSDPAÍøÂç¿ÉÒÔ´«Êä¶à´ï30 GBµÄÊý¾Ý£¬²¢Ã¿Ô¶à´ï300·ÖÖÓµÄÊÖ»ú¿´µçÊÓºÍ1000·ÖÖÓµÄͨ»°Ê±¼ä¡£
HSDPA»ù±¾ÔÀí£º
ÔÚR99µÄ¿ÕÖнӿÚÌåϵÖУ¬Êý¾ÝÖØ´«·½Ê½ÊÇÓÉRNCÀ´¸ºÔðÍê³ÉµÄ£¬Êý¾ÝÖØ´«ÐèÒªÈƾIub½Ó¿Ú£¬Êý¾ÝÖØ´«µÄÖÜÆڽϳ¤£»Node B½ö½öÆðµ½Ò»¸ö¸ù¾ÝRNCµÄÖ¸ÁîÍê³ÉÎïÀí²ã±àÂë¡¢´«ÊäµÄ¹¦ÄÜ£¬Node B±¾Éí»ù±¾²»¾ßÓжÔÎïÀí×ÊÔ´µÄ¿ØÖƺ͵÷¶ÈÄÜÁ¦¡£¶øÔÚHSDPAÖУ¬ÎªÁËÔÚ¿ÕÖнӿÚÉÏʵÏÖ¸ü´óµÄÍÌÍÂÄÜÁ¦£¬¶ÔNode BµÄ¹¦ÄܽøÐÐÁËÔöÇ¿£¬ÔÚNode BµÄ²ãÃæÒýÈëÁËÎïÀí²ãÖØ´«ºÍ¿ìËÙ×ÊÔ´µ÷¶ÈµÄ¸ÅÄͨ¹ýÔÚ¸ü¿¿½ü¿ÕÖнӿڵÄNode BÉÏÒýÈëÕâЩԱ¾Ö»ÓÐRNC²Å¾ßÓеŦÄÜ£¬¼Ó¿ìÁËÖØ´«ÒÔ¼°¶Ô¿ÕÖÐ×ÊÔ´µ÷¶ÈµÄЧÂÊ¡£Í¬Ê±£¬½áºÏAMC£¨Adaptive Modulation and Coding£¬×ÔÊÊÓ¦µ÷ÖƱàÂ룩¡¢HARQ£¨Hybrid Automatic Repeat reQuest£©µÈм¼Êõ£¬²ÉÓÃÁ˸ü¶ÌµÄTTI£¨Transmit Time Interval£©³¤¶È£¨2ms£©¡¢¹Ì¶¨À©ÆµÒò×ӵĶàÂëµÀ´«Ê䣬´Ó¶øÔÚÏÂÐз½ÏòÉÏʵÏÖÁËÔ¶¸ßÓÚR99µÄ¸ßËٵķÖ×éÊý¾Ý´«ÊäÄÜÁ¦¡£
ΪÁËʵÏÖHSDPAµÄ¹¦ÄÜÌØÐÔ£¬ÔÚÎïÀí²ã¹æ·¶ÖÐÒýÈëÁËÈýÖÖеÄÎïÀíÐŵÀ¡£
£¨1£©¸ßËÙÏÂÐÐÁ´Â·¹²ÏíÐŵÀ£¨HS-DSCH£©£ºÔÚÏÂÐÐÁ´Â·ÉÏ£¬´«ÊäÓû§µÄÒµÎñÊý¾Ý¡£²ÉÓù̶¨µÄÀ©ÆµÒò×ÓSF=16£¬ÓÉÓÚÐèÒª¸ø¹«¹²ÐŵÀ¡¢HS-SCCH¼°Ïà¹ØµÄDCHÔ¤Áô¿ÉÓõÄÐŵÀÂ룬ËùÒÔ×î´ó¿ÉÓÃÐŵÀÊýΪ15¡£´«Êäʱ¼ä¼ä¸ô¶¨ÒåΪ2ms£¨3¸öʱ϶£©£¬Ô¶Ð¡ÓÚR99Öй涨µÄ10ms¡¢20msµÈ³¤¶È£¬´Ó¶ø´ó´óËõ¶ÌÁËÊý¾ÝÖØ´«Ê±Öն˺ÍNode BÖ®¼äµÄÍù·µÊ±ÑÓ¡£
£¨2£©¸ßËÙÏÂÐй²Ïí¿ØÖÆÐŵÀ£¨HS-SCCH£©£ºÔÚÏÂÐÐÁ´Â·ÉÏ£¬´«ËÍHSDPAµÄרÓÃÐÅÁÈç´«Êä¸ñʽºÍϵͳ×ÊԴָʾµÈ£»²ÉÓù̶¨µÄÀ©ÆµÒò×ÓSF=128£¬Ã¿¸öÖÕ¶Ë×î¶à¿ÉÒÔͬʱ¼à²â4¸öHS-SCCH¡£
£¨3£©¸ßËÙרÓÃÎïÀí¿ØÖÆÐŵÀ£¨HS-DPCCH£©£ºÔÚÉÏÐÐÁ´Â·ÉÏ£¬·¢ËÍ·´À¡ÐŵÀÐÅÏ¢£¨ÈçÐŵÀÖÊÁ¿Ö¸Ê¾CQI£©ºÍ´«Êä¿é·¢ËÍÈ·ÈÏÐÅÏ¢£¨³ÐÔØHARQ½ø³ÌÐèÒªµÄACK£¯NACKÐÅÏ¢£©¡£Óû§ÖÕ¶Ëͨ¹ý²âÁ¿CPICHµÃµ½CQIÐÅÏ¢£¬CQIµÄÉϱ¨ÖÜÆÚºÍÓ³Éä¿ÉÓÉÍøÂ綨Òå¡£
Node Bͨ¹ýÓû§´ÓÉÏÐÐרÓÿØÖÆÐŵÀHS-DPCCHÖз´À¡µÄÐÅÏ¢µÃµ½Óû§µÄÏÂÐÐÐŵÀÇé¿ö£¬È»ºóNode B¸ù¾ÝËùÊÕ¼¯µÄËùÓÐÓû§µÄÐŵÀÇé¿ö£¬Í¨¹ýÒ»¶¨µÄµ÷¶È²ßÂÔ£¬Îªµ±Ç°Óû§·ÖÅäHSDPAµÄÏÂÐÐÊý¾Ý´«ÊäµÄÎïÀí×ÊÔ´£¨HS-DSCH¡¢HS-SCCH£©£¬Í¬Ê±Ñ¡ÔñÏàÓ¦µÄ×îºÏÊʵÄAMC·½°¸£¬ÒÔ´ËÀ´ÊµÏÖϵͳÍÌÍÂÁ¿×î´ó»¯¡¢Óû§ÍÌÍÂÁ¿×î´ó»¯¡¢Óû§QoS±£Ö¤µÈ×ÊÔ´µ÷¶ÈÄ¿±ê¡£
Ä¿Ç°HSDPA¼¼Êõ£º
Ä¿Ç°£¬ÓÐ100¸öHSDPAµÄÍøÂç²Ù×÷ϵͳÔÚÈ«Çò54¸ö¹ú¼Ò¡£ ´óÁ¿ÕâЩÍøÂçÌṩ3.6 MbpsµÄÏÂÐÐËٶȡ£ È»¶ø£¬¸ü¶àµÄÍøÂçÒ²¿ªÊ¼Çл»µ½¸ü¿ìµÄ7.2 MbpsµÄÏÂÐÐËٶȡ£ Ö»ÓÐһЩÍøÂçÄ¿Ç°ÌṩȫÃæ14.4 MbpsµÄËÙ¶ÈHSDPAµÄ¾ºÕùÓ뾺Õù¶ÔÊֵĸñʽ£¬Êý¾ÝÓÅ»¯ÑݽøÌṩµÄÂë·Ö¶àÖ·£¨CDMA £©ºÍϸ°ûÌṩÕß¡£
HSDPA¼¼ÊõµÄÉ豸£º
³ýÁ˾ßÓÐÒƶ¯¼Æ»®£¬¹«Ë¾ÌṩHSDPA½ÓÈ룬ΨһµÄÒªÇóµÇ¼µ½HSDPAÍøÂçÊǾßÓÐÒƶ¯É豸Äܹ»Ê¹ÓÃÕâÏî¼¼Êõ¡£ µ±Ç°¹²ÓÐ171¿îÊÖ»úºÍÆäËûÒƶ¯É豸¿ÉÒÔʹÓÃHSDPAÍøÂç¡£ ÆäÖÐһЩµÄHSDPA¹¦ÄܵÄÉ豸ÊÇÖøÃûµÄÊÖ»úÆ·ÅƺÍÐͺŵÄÃû³Æ£¬Èçŵ»ùÑÇN95µÄPalm Treo 750ÕÆÉϵçÄÔ£¬¼°Ä¦ÍÐÂÞÀRAZRÒÔ¼°ËüµÄÐí¶à²»Í¬°æ±¾¡£³ýÁ˲»Í¬µÄHSDPAÊÖ»úÔÚÊг¡ÉÏ£¬Ò»Ð©±Ê¼Ç±¾µçÄÔºÍHSDPA¼¼ÊõµÄ±Ê¼Ç±¾µçÄÔ½ÓÈëÍøÂçµÄÊý¾ÝÌṩ¡£ ÕâЩ²úÆ·ÌṩµÄ¼¸¸öÖ÷ÒªµçÄÔÖÆÔìÉÌ°üÀ¨´÷¶û£¬ºê»ù£¬»ÝÆÕ£¬Î÷ÃÅ×Ó£¬¸»Ê¿Í¨£¬ËÉϺÍÁªÏë¡£
δÀ´µÄHSDPA¼¼Êõ£º
ËäÈ»14.4 MbpsµÄÊǵ±Ç°µÄÉÏÏÞ£¬ÏÂÐÐËٶȵÄHSDPA £¬ÍøÂçÕýÔÚ×¼±¸Éý¼¶ÎªÒ»ÖÖÐÂÐ͵ÄHSDPAϵͳ¡£ ±»³ÆΪHSPAÍøÂçµÄ·¢Õ¹£¬Õâ¸öеÄHSDPA¼¼ÊõµÄÄ¿µÄÊÇÌá¸ßÏÂÔØËÙ¶ÈΪ42 MbpsµÄÊͷźó£¬ÓпÉÄÜ´ïµ½¸ü¸ßµÄËÙ¶ÈÔÚδÀ´µÄ¼ÛÖµ¡£HSDPAµÄÓ¦Óà £º
Ä¿Ç°£¬HSDPA±ê×¼ÒѾÎȶ¨£¬¼¼ÊõÒ²ÈÕÒæ³ÉÊ죬²úÆ·ÐÔÄÜͨ¹ý²âÊԵõ½ÑéÖ¤£¬Öն˲úÆ·ÔÚÊг¡ÉÏÒ²ÒѽÐøÍƳö¡£Ëæ×ÅHSDPA¼¼Êõ²»¶Ï·¢Õ¹ºÍÉ豸²»¶Ï³ÉÊ죬ÆäÁ¼ºÃµÄÓ¦ÓÃÇ°¾°ºÍƽ»¬µÄÑݽøÄÜÁ¦ÕýÔÚÒýÆðÒµ½çÔ½À´Ô½¶àµÄ¹Ø×¢£¬HSDPA¼¸ºõµÃµ½ÁËËùÓÐWCDMAÉ豸³§É̵ÄÖ§³Ö£¬ÔÚÊÀ½ç·¶Î§ÄÚ£¬¸÷Ö÷ÒªÔËÓªÉÌÒ²ÒÑ¿ªÊ¼¼Æ»®²¿Êð»òÒѾ²¿ÊðHSDPA¡£
»Ø´ðÕߣº
wangyuan072
»Ø´ðʱ¼ä£º2009-05-02 12:07
42 39
ÎÒ²¹³äһϣ¬ÆäʵÔÚHSDPAÖл¹¼ÓÈëÒ»¸ö´«ÊäÐŵÀADPCH£¬°éËæרÓÃÎïÀíÐŵÀ£¬Ö÷ÒªÓÃÓÚÔÚ´«ËÍRRCÐÅÁî
hanfengtao1023 2010-03-31 10:53
˵´íÁË£¬ÊÇ¿ØÖÆÐŵÀ
hanfengtao1023 2010-03-31 10:54
˵µÃºÃÏêϸѽ£¡
°¡¢Ù»¢ 2010-05-13 11:34
HSDPA£¨High Speed Downlink Packet Access£©:¸ßËÙÏÂÐзÖ×é½ÓÈë¼¼Êõ
ÎÒÕâÀïÓÐÒ»¸öÏêϸµÄPPTרÃŽéÉÜHSDPAµÄ¡£
ÓÐÐèÒª¿ÉÒÔ½»Á÷Ï¡¡
ÎÒÕâÀïÓÐÒ»¸öÏêϸµÄPPTרÃŽéÉÜHSDPAµÄ¡£
ÓÐÐèÒª¿ÉÒÔ½»Á÷Ï¡¡
»Ø´ðÕߣº
fallenangel
»Ø´ðʱ¼ä£º2009-05-07 10:56
46 36
HSDPA£¨High Speed Downlink Packet Access£©:¸ßËÙÏÂÐзÖ×é½ÓÈë¼¼Êõ
ÊÇR5°æ±¾ÖÐÌá³öµÄ£¬ÔÚR4½×¶ÎûÓУ¡
ÊÇR5°æ±¾ÖÐÌá³öµÄ£¬ÔÚR4½×¶ÎûÓУ¡
»Ø´ðÕߣº
yidaiwenhao
»Ø´ðʱ¼ä£º2009-05-13 15:34
41 44
ÈȵãÎÊÌâ
¸ü¶à¾«²Ê
ÁªÏµÎÒÃÇ - ÎÊͨÐÅר¼Ò | Powered by MSCBSC Òƶ¯Í¨ÐÅÍø © 2006 - |