US 2012/0236956 A1Published application

Transmission methods for downlink ack/nack channels

AssigneeSamsung Electronics Co., Ltd.

InventorsJianzhong Zhang, Zhouyue Pi, Farooq Khan, Eddy Kwon, Juho Lee, Jin-Kyu Han

Life of this patent

Estimating the term…

Abstract

A method from transmitting data via multiple antennas. In this method, four information bits to be transmitted are multiplexed by using either one of a code division multiplexing scheme or a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme, to generate a code division multiplexed symbol including four vectors. Then, the code division multiplexed symbol is repeatedly transmitted by alternatively applying two transmit diversity schemes via four transmission antennas.

Claims21

Dependent claims

-44. (canceled)

A method for receiving data, the method comprising:

repeatedly receiving, from four transmission antennas, a code division multiplexed symbol a that is generated by multiplexing a plurality of information bits using one of (i) a first code division multiplexing scheme and (ii) a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme,
wherein the code division multiplexed symbol a comprises four vectors a=[a1, . . . , a4],
wherein a first transmit diversity scheme and a second transmit diversity scheme are alternatively applied to alternate repetitions of the code division multiplexed symbol a before transmission from the four transmission antennas,
wherein, for the first transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
0
0
0
0
]
,
and
wherein, for the second transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
0
0
0
0
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
]
,
where Tij represents the symbol transmitted on the i-th antenna and the j-th subcarrier, and i=1, 2, 3, 4, j=1, 2, 3, 4.

140 more elements

A wireless terminal in a communication system, comprising:

a receiver chain configured to receive repeatedly, from four transmission antennas, a code division multiplexed symbol a that is generated by multiplexing a plurality of information bits by using one of (i) a first code division multiplexing scheme and (ii) a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme,
wherein the code division multiplexed symbol a comprises four vectors a=[a1, . . . , a4],
wherein a first transmit diversity scheme and a second transmit diversity scheme are alternatively applied to alternate repetitions of the code division multiplexed symbol a before transmission from the four transmission antennas,
wherein for the first transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
0
0
0
0
]
,
and
wherein for the second transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
0
0
0
0
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
]
,
where Tij represents the symbol transmitted on the i-th antenna and the j-th subcarrier, and i=1, 2, 3, 4, j=1, 2, 3, 4.

140 more elements

A base station in a communication system, comprising:

a multiplexing unit configured to multiplex a plurality of information bits to be transmitted by using one of (i) a first code division multiplexing scheme and (ii) a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme, to generate a code division multiplexed symbol a comprising four vectors a=[a1, . . . , a4];
a transmission processing unit configured to process the code division multiplexed symbol a by applying two transmit diversity schemes to generate two transmit signals,
wherein a first transmit signal generated in accordance with a first transmit diversity scheme is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
0
0
0
0
]
,
and
wherein a second transmit signal generated in accordance with a second transmit diversity scheme is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
0
0
0
0
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
]
,
where Tij represents the symbol transmitted on the i-th antenna and the j-th subcarrier, and i=1, 2, 3, 4, j=1, 2, 3, 4;
and
four transmission antennas configured to transmit alternatively the first transmit signal and the second transmit signal for a plurality of repetitions.

141 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/447,971Filed 16 Apr 2012
Priority: 3 Aug 2007
Published: 20 Sep 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04L 5/0016
Three-dimensional division: time-frequency-code
H04L 1/0606
Using space diversity: space-frequency coding
H04L 1/1607
In which the return channel carries supervisory signals, e.g. repetition request signals: details of the supervisory signal
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals

Family

Application60/935,300Us provisional application · filed 3 Aug 2007
Application12/219,438Continuation · filed 22 Jul 2008
Application13/447,971Continuation
US 2009/0059884 A1Published application
US 8,160,172 B2Related patent
US 8,599,954 B2Related patent
US 2012/0236956 A1This patent

From the US filing history. Foreign family members aren’t listed.

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US 2012/0236956 A1Published application

Transmission methods for downlink ack/nack channels

AssigneeSamsung Electronics Co., Ltd.

InventorsJianzhong Zhang, Zhouyue Pi, Farooq Khan, Eddy Kwon, Juho Lee, Jin-Kyu Han

Life of this patent

Estimating the term…

Abstract

Claims21

Dependent claims

-44. (canceled)

A method for receiving data, the method comprising:

repeatedly receiving, from four transmission antennas, a code division multiplexed symbol a that is generated by multiplexing a plurality of information bits using one of (i) a first code division multiplexing scheme and (ii) a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme,
wherein the code division multiplexed symbol a comprises four vectors a=[a1, . . . , a4],
wherein a first transmit diversity scheme and a second transmit diversity scheme are alternatively applied to alternate repetitions of the code division multiplexed symbol a before transmission from the four transmission antennas,
wherein, for the first transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
0
0
0
0
]
,
and
wherein, for the second transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
0
0
0
0
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
]
,
where Tij represents the symbol transmitted on the i-th antenna and the j-th subcarrier, and i=1, 2, 3, 4, j=1, 2, 3, 4.

140 more elements

A wireless terminal in a communication system, comprising:

a receiver chain configured to receive repeatedly, from four transmission antennas, a code division multiplexed symbol a that is generated by multiplexing a plurality of information bits by using one of (i) a first code division multiplexing scheme and (ii) a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme,
wherein the code division multiplexed symbol a comprises four vectors a=[a1, . . . , a4],
wherein a first transmit diversity scheme and a second transmit diversity scheme are alternatively applied to alternate repetitions of the code division multiplexed symbol a before transmission from the four transmission antennas,
wherein for the first transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
0
0
0
0
]
,
and
wherein for the second transmit diversity scheme, a transmit signal is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
0
0
0
0
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
]
,
where Tij represents the symbol transmitted on the i-th antenna and the j-th subcarrier, and i=1, 2, 3, 4, j=1, 2, 3, 4.

140 more elements

A base station in a communication system, comprising:

a multiplexing unit configured to multiplex a plurality of information bits to be transmitted by using one of (i) a first code division multiplexing scheme and (ii) a second code division multiplexing scheme combined with a real and imaginary multiplexing scheme, to generate a code division multiplexed symbol a comprising four vectors a=[a1, . . . , a4];
a transmission processing unit configured to process the code division multiplexed symbol a by applying two transmit diversity schemes to generate two transmit signals,
wherein a first transmit signal generated in accordance with a first transmit diversity scheme is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
0
0
0
0
]
,
and
wherein a second transmit signal generated in accordance with a second transmit diversity scheme is established by:
[
T
11
T
12
T
13
T
14
T
21
T
22
T
23
T
24
T
31
T
32
T
33
T
34
T
41
T
42
T
43
T
44
]
=
[
0
0
0
0
a
1
a
2
a
3
a
4
0
0
0
0
-
a
2
*
a
1
*
-
a
4
*
a
3
*
]
,
where Tij represents the symbol transmitted on the i-th antenna and the j-th subcarrier, and i=1, 2, 3, 4, j=1, 2, 3, 4;
and
four transmission antennas configured to transmit alternatively the first transmit signal and the second transmit signal for a plurality of repetitions.

141 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/447,971Filed 16 Apr 2012
Priority: 3 Aug 2007
Published: 20 Sep 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04L 5/0016
Three-dimensional division: time-frequency-code
H04L 1/0606
Using space diversity: space-frequency coding
H04L 1/1607
In which the return channel carries supervisory signals, e.g. repetition request signals: details of the supervisory signal
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals

Family

Application60/935,300Us provisional application · filed 3 Aug 2007
Application12/219,438Continuation · filed 22 Jul 2008
Application13/447,971Continuation
US 2009/0059884 A1Published application
US 8,160,172 B2Related patent
US 8,599,954 B2Related patent
US 2012/0236956 A1This patent

From the US filing history. Foreign family members aren’t listed.