US2016013890A1PendingUtilityA1

Method and apparatus for multi-antenna transmission in uplink

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Assignee: INTERDIGITAL PATENT HOLDINGSPriority: Sep 30, 2009Filed: Sep 21, 2015Published: Jan 14, 2016
Est. expirySep 30, 2029(~3.2 yrs left)· nominal 20-yr term from priority
Inventors:Fenguin XiLujing CaiHong O. ZhangBenoit Pelletier
H04B 7/0404H04L 1/0668H04B 7/0669H04L 1/0625H04L 27/362H04B 7/0456H04B 7/06H04B 7/0623H04B 7/0617
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Claims

Abstract

Method and apparatus for uplink transmission using multiple antennas are disclosed. A wireless transmit/receive unit (WTRU) performs space time transmit diversity (STTD) encoding on an input stream of a physical channel configured for STTD. Each physical channel may be mapped to either an in-phase (I) branch or a quadrature-phase (Q) branch. The WTRU may perform the STTD encoding either in a binary domain or in a complex domain. Additionally, the WTRU may perform pre-coding on at least one physical channel including the E-DPDCH with the pre-coding weights, and transmitting the pre-coded output streams via a plurality of antennas. The pre-coding may be performed either after or before spreading operation.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method implemented in a wireless transmit/receive unit (WTRU) for uplink transmission using multiple antennas, the method comprising:
 generating a first data stream and a second data stream;   multiplying pre-coding weights to the first data stream and the second data stream to generate a plurality of output streams; and   transmitting the output streams via a plurality of antennas.   
     
     
         2 . The method of  claim 1  wherein the first data stream includes an E-DCH dedicated physical data channel (E-DPDCH) and a first dedicated physical control channel (DPCCH). 
     
     
         3 . The method of  claim 1  wherein the second data stream includes a second DPCCH. 
     
     
         4 . The method of  claim 1  wherein the pre-coding weights are determined for closed loop transmit diversity. 
     
     
         5 . The method of  claim 1  wherein the first DPCCH and the second DPCCH carry a same pilot sequence. 
     
     
         6 . The method of  claim 1  wherein the first DPCCH and the second DPCCH are transmitted using different channelization codes. 
     
     
         7 . A wireless transmit/receive unit (WTRU) for uplink transmission using multiple antennas, the WTRU comprising:
 a physical layer processing block configured to generate a first data stream and a second data stream;   a pre-coding block configured to multiply pre-coding weights to first data stream and the second data stream to generate a plurality of output streams; and   a plurality of antennas for transmitting the output streams.   
     
     
         8 . The WTRU of  claim 7  wherein the first data stream includes an E-DCH dedicated physical data channel (E-DPDCH) and a first dedicated physical control channel (DPCCH). 
     
     
         9 . The WTRU of  claim 7  wherein the second data stream includes a second DPCCH. 
     
     
         10 . The WTRU of  claim 7  wherein the pre-coding weights are determined for closed loop transmit diversity. 
     
     
         11 . The WTRU of  claim 7  wherein the first DPCCH and the second DPCCH carry a same pilot sequence. 
     
     
         12 . The WTRU of  claim 7  wherein the first DPCCH and the DPCCH are transmitted using different channelization codes.

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