Reliability enhancement in distributed system

1 . A method of wireless communication of a wireless device and a user equipment (UE), comprising:

transmitting, at the UE and on first radio frequency (RF) time-frequency resources on a first component carrier, first RF signals carrying user data to be sent to a base station;

receiving, at the wireless device, the first RF signals on the first RF time-frequency resources on the first component carrier;

amplifying, at the wireless device, the first RF signals to generate amplified RF signals;

translating, at the wireless device, the amplified RF signals from the first RF time-frequency resources on the first component carrier to the second RF time-frequency resources on a second component carrier to generate the second RF signals; and

transmitting, at the wireless device and to the base station, the second RF signals on the second RF time-frequency resources that are on the second component carrier, the second RF signals carrying the user data, wherein the first component carrier and the second component carrier are non-overlapping, wherein the base station jointly decodes first baseband signals derived from the first RF signals received directly from the UE and second baseband signals derived from the second RF signals received from the wireless device to obtain the user data from the UE;

wherein the first baseband signals received at the wireless device are represented as H 2 ·X where X represents baseband signals carrying the user data and H 2 represents a channel between the UE and the wireless device;

wherein the amplifying generates amplified baseband signals represented as G S ·H 2 ·X where G S represents an amplification factor of the wireless device; and

wherein the translating applies a resource translation function T such that the second baseband signals are represented as T·G S ·H 2 ·X, wherein the joint decoding performed by the base station uses channel models that represent the first and second baseband signals respectively as

r

1

=

H

1

·

X

⁢

and

⁢

r

2

=

H

3

·

T

·

G

s

·

H

2

·

X

.

2 . The method of claim 1 , wherein the UE supports uplink transmission on only a single component carrier, and the translating by the wireless device enables the base station to receive the user data on both the first component carrier and the second component carrier.

3 . The method of claim 1 , further comprising:

receiving, at a second wireless device, the first RF signals transmitted by the UE on the first RF time-frequency resources on the first component carrier;

amplifying, at the second wireless device, the first RF signals to generate second amplified RF signals;

translating, at the second wireless device, the second amplified RF signals from the first RF time-frequency resources on the first component carrier to third RF time-frequency resources on a third component carrier to generate third RF signals; and

transmitting, at the second wireless device and to the base station, the third RF signals on the third RF time-frequency resources on the third component carrier, wherein the third component carrier is non-overlapping with both the first component carrier and the second component carrier.

4 . A method of wireless communication of a base station, comprising:

receiving first radio frequency (RF) signals on first RF time-frequency resources on a first component carrier, the first RF signals carrying user data from a user equipment (UE) and being received directly from the UE;

receiving second RF signals on second RF time-frequency resources on a second component carrier, the second RF signals carrying the user data from the UE and being received from a wireless device that amplified and translated the first RF signals, wherein the first RF signals are amplified at the wireless device to generate amplified RF signals, wherein the amplified RF signals are translated at the wireless device from the first RF time-frequency resources on the first component carrier to the second RF time-frequency resources on a second component carrier to generate the second RF signals;

obtaining first baseband signals from the first RF signals;

obtaining second baseband signals from the second RF signals; and

decoding the first baseband signals and the second baseband signals jointly to obtain the user data from the UE, wherein the first component carrier and the second component carrier are non-overlapping;

wherein the first baseband signals obtained from the first RF signals are represented as r 1 =H 1 ·X where X represents baseband signals carrying the user data and H 1 represents a channel between the UE and the base station; and

wherein the second baseband signals obtained from the second RF signals are represented as r 2 =H 3 ·T·G S ·H 2 ·X where H 2 represents a channel between the UE and the wireless device, G S represents an amplification factor at the wireless device, T represents a resource translation function applied at the wireless device, and H 3 represents a channel between the wireless device and the base station, wherein the joint decoding is performed using channel models that represent the first and second baseband signals respectively as

r

1

=

H

1

·

X

⁢

and

⁢

r

2

=

H

3

·

T

·

G

s

·

H

2

·

X

.

5 . The method of claim 4 , wherein the first RF signals are received from the UE, wherein the second RF signals are received from a repeater.

6 . The method of claim 4 , wherein the first RF signals are received from a first repeater, wherein the second RF signals are received from a second repeater.

7 . A wireless system comprising:

a wireless device and a user equipment (UE),

wherein the UE includes:

a memory; and

at least one processor coupled to the memory and configured to:

transmit, at the UE and on first radio frequency (RF) time-frequency resources on a first component carrier, first RF signals carrying user data to be sent to a base station;

wherein the wireless device includes:

a memory; and

at least one processor coupled to the memory and configured to:

receive, at the wireless device, the first RF signals on the first RF time-frequency resources on the first component carrier;

amplify, at the wireless device, the first RF signals to generate amplified RF signals;

translate, at the wireless device, the amplified RF signals from the first RF time-frequency resources on the first component carrier to the second RF time-frequency resources on a second component carrier to generate the second RF signals; and

transmit, at the wireless device and to the base station, the second RF signals on the second RF time-frequency resources that are on the second component carrier, the second RF signals carrying the user data, wherein the first component carrier and the second component carrier are non-overlapping, wherein the base station jointly decodes first baseband signals derived from the first RF signals received directly from the UE and second baseband signals derived from the second RF signals received from the wireless device to obtain the user data from the UE;

wherein the first baseband signals received at the wireless device are represented as H 2 ·X where X represents baseband signals carrying the user data and H 2 represents a channel between the UE and the wireless device;

wherein the amplified RF signals carry amplified baseband signals represented as G S ·H 2 ·X where G S represents an amplification factor of the wireless device; and

wherein, to translate the amplified RF signals, a resource translation function T is applied such that the second baseband signals are represented as T·G S ·H 2 ·X, wherein to joint decode, the base station uses channel models that represent the first and second baseband signals respectively as

r

1

=

H

1

·

X

⁢

and

⁢

r

2

=

H

3

·

T

·

G

s

·

H

2

·

X

.

8 . A method of wireless communication of a base station, comprising:

receiving first radio frequency (RF) signals on first RF time-frequency resources on a first component carrier, the first RF signals carrying user data from a user equipment (UE) and being received directly from the UE;

receiving second RF signals on second RF time-frequency resources on a second component carrier, the second RF signals carrying the user data from the UE and being received from a wireless device that amplified and translated the first RF signals, wherein the first RF signals are amplified at the wireless device to generate amplified RF signals, wherein the amplified RF signals are translated at the wireless device from the first RF time-frequency resources on the first component carrier to the second RF time-frequency resources on a second component carrier to generate the second RF signals;

obtaining first baseband signals from the first RF signals;

obtaining second baseband signals from the second RF signals;

decoding the first baseband signals and the second baseband signals jointly to obtain the user data from the UE, wherein the first component carrier and the second component carrier are non-overlapping;

receiving third RF signals on third RF time-frequency resources on a third component carrier, the third RF signals carrying the user data from the UE and being received from a second wireless device that amplified and translated the first RF signals from the first component carrier to the third component carrier;

obtaining third baseband signals from the third RF signals; and

jointly decoding the first baseband signals, the second baseband signals, and the third baseband signals to obtain the user data from the UE,

wherein the third component carrier is non-overlapping with both the first component carrier and the second component carrier.