System and method for uplink multiple input multiple output transmission

• US 8,953,713 B2
• Filed: 11/07/2011
• Issued: 02/10/2015
• Est. Priority Date: 11/08/2010
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sambhwani, Sharad Deepak, Akkarakaran, Sony John
• Primary Examiner(s): Aghdam, Freshteh N
• Application Number:
  US13/291,045
• Publication Number:
  US 20120287965A1
• Time in Patent Office: 1,191 Days
• Field of Search: 375/260, 375/267, 375/295, 375/299
• US Class Current: 375/299
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels

Abstract

Methods and apparatuses are provided for uplink MIMO transmissions in a wireless communication system. In particular, a primary stream (610) may be utilized to carry a primary data channel E-DPDCH (624), and a secondary stream (612) may be utilized to carry a secondary data channel S-E-DPDCH (620). Further, the primary stream (610) may be precoded utilizing a primary precoding vector, and the secondary stream (612) may be precoded utilizing a secondary precoding vector, with coefficients orthogonal to those of the primary precoding vector. The primary stream may include an enhanced control channel E-DPCCH (614) adapted to carry control information associated with both the primary data channel E-DPDCH (624) and the secondary data channel S-E-DPDCH (620).

Claims

1. A method of wireless communication, comprising:

applying a first precoding vector to a primary data channel (624);

applying a second precoding vector, orthogonal to the first precoding vector, to a secondary data channel (620);

applying the first precoding vector to a primary control channel (614) configured to carry first control information associated with the primary data channel (624);

applying the first precoding vector to a secondary control channel (616A) configured to carry second control information associated with the secondary data channel (620);

channel coding the first control information associated with the primary data channel (624);

channel coding the second control information associated with the secondary data channel (620) independently of the channel coding of the first control information;

transmitting the primary data channel (624), the primary control channel (614), and the secondary control channel (616A) utilizing a first virtual antenna (610); and

transmitting the secondary data channel (620) utilizing a second virtual antenna (612)

wherein the second virtual antenna is different from the first virtual antenna.

2. The method of claim 1, wherein the channel coding the first control information comprises encoding the primary control channel (614) independently of an encoding of any other channel.

3. The method of claim 2, wherein the encoding of the primary control channel (614) comprises utilizing a spreading factor of 256.

4. The method of claim 2, wherein the encoding of the primary control channel (614) comprises utilizing a spreading factor of 128.

5. The method of claim 1, wherein the transmitting of the first virtual antenna and the transmitting of the second virtual antenna utilize the same carrier.

6. The method of claim 1, further comprising:

mapping the first virtual antenna (610) and the second virtual antenna (612) to a first physical antenna (606) and a second physical antenna (608); and

transmitting a multiple input multiple output (MIMO) transmission over the first physical antenna (606) and the second physical antenna (608).

7. A computer program product, comprising:

a non-transitory computer-readable medium (2006) comprising instructions for causing a computer to;

apply a first precoding vector to a primary data channel (624);

apply a second precoding vector, orthogonal to the first precoding vector, to a secondary data channel (620);

apply the first precoding vector to a primary control channel (614) configured to carry first control information associated with the primary data channel (624);

apply the first precoding vector to a secondary control channel (616A) configured to carry second control information associated with the secondary data channel (620);

channel code the first control information associated with the primary data channel (624);

channel code the second control information associated with the secondary data channel (620) independently of the channel coding of the first control information;

transmit the primary data channel (624), the primary control channel (614), and the secondary control channel (616A) utilizing a first virtual antenna (610); and

transmit the secondary data channel (620) utilizing a second virtual antenna (612) wherein the second virtual antenna is different from the first virtual antenna.

8. The computer program product of claim 7, wherein the computer readable medium (2006) comprising instructions for causing a computer to channel code the first control information further comprises instructions for causing a computer to:

encode the primary control channel (614) independently of an encoding of any other channel.

9. The computer program product of claim 8, wherein the instructions for causing a computer to encode the primary control channel (614) are configured to utilize a spreading factor of 256.

10. The computer program product of claim 8, wherein the instructions for causing a computer to encode the primary control channel (614) are configured to utilize a spreading factor of 128.

11. The computer program product of claim 7, wherein the instructions for causing a computer to transmit the first virtual antenna and the instructions for causing a computer to transmit the second virtual antenna are each configured to utilize the same carrier.

12. The computer program product of claim 7, wherein the computer-readable medium (2006) further comprises instructions for causing a computer to:

map the first virtual antenna (610) and the second virtual antenna (612) to a first physical antenna (606) and a second physical antenna (608); and

transmit a multiple output (MIMO) transmission over the first physical antenna (606) and the second physical antenna (608).

13. An apparatus for wireless communication, comprising:

a transmitter (2156) for transmitting a primary virtual antenna (610) and a secondary virtual antenna (612);

at least one processor (2190) for controlling the transmitter; and

a memory (2192) coupled to the at least one processor,

wherein the at least one processor is configured to;

apply a first precoding vector to a primary data channel (624);

apply a second precoding vector , orthogonal to the first precoding vector, to a secondary data channel (620);

apply the first precoding vector to a primary control channel (614) configured to carry first control information associated with the primary data channel (624);

apply the first precoding vector to a secondary control channel (616A) configured to carry second control information associated with the secondary data channel (620);

channel code the first control information associated with the primary data channel (624);

channel code the second control information associated with the secondary data channel (620) independently of the channel coding of the first control information;

transmit the primary data channel (624), the primary control channel (614), and the secondary control channel (616A) utilizing the first virtual antenna (610); and

transmit the secondary data channel (620) utilizing the secondary virtual antenna (612) wherein the second virtual antenna is different from the first virtual antenna.

14. The apparatus of claim 13, wherein the channel coding the first control information comprises encoding the primary control channel (614) independently of an encoding of any other channel.

15. The apparatus of claim 14, wherein the encoding of the primary control channel (614) comprises utilizing a spreading factor of 256.

16. The apparatus of claim 14, wherein the encoding of the primary control channel (614) comprises utilizing a spreading factor of 128.

17. The apparatus of claim 13, wherein the transmitting of the first virtual antenna and the transmitting of the second virtual antenna utilize the same carrier.

18. The apparatus of claim 13, wherein the at least one processor is further configured to:

map the first virtual antenna (610) and the second virtual antenna (612) to a first physical antenna (606) and a second physical antenna (608); and

transmit a multiple output (MIMO) transmission over the first physical antenna (606) and the second physical antenna (608).