US 8,477,679 B2Granted

Resource allocation method and device for amplify-and-forward relay network

AssigneeHuawei Technologies Co., Ltd.

InventorsAlireza Sharifian, Petar Djukic, Halim Yanikomeroglu, Jietao Zhang

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Abstract

The present invention provides a resource allocation method and device for an amplify-and-forward relay network. The method includes: obtaining channel information, where the channel information includes channel information between a base station BS and a relay station RS and channel information between the RS and each user equipment UE; calculating, according to the channel information, resource use information of each UE on each sub-channel pairing; and obtaining, according to the resource use information, the number of REs allocated to each UE on each sub-channel pairing, where the obtained number of the REs enables a preset first function to obtain a maximum value. In the embodiments of the present invention, the use efficiency of the resources may be improved.

Claims13

Dependent claims

A resource allocation method for an amplify-and-forward relay network, the method comprising:

obtaining channel information, wherein the channel information includes channel information between a base station (BS) and a relay station (RS) and channel information between the RS and each user equipment (UE);
calculating, according to the channel information, resource use information of each UE on each sub-channel pairing;
and
obtaining, according to the resource use information, the number of resource elements REs allocated to each UE on each sub-channel pairing, wherein the obtained number of the REs enables a preset first function to obtain a maximum value;
wherein the channel information is the signal-to-noise ratio and the resource use information is the number of bits;
a formula for calculating, according to the channel information, resource use information of each UE on each sub-channel pairing is:
bij(m)=f(Rij(m));
wherein bij(m) indicates the number of bits that may be carried by each RE of the UE indexed by m on a sub-channel pairing indexed by (i, j);
f(*) indicates a mapping modulated according to adaptive codes;
Rij(m) indicates a transmission rate of the UE indexed by m on the sub-channel pairing indexed by (i, j), and a formula for calculating Rij(m) as follows:
Rij(m)=Wb log(1+SNR(m)ij);
wherein Wb is bandwidth of each RE, and a formula for calculating SNRij(m) is as follows:
S
⁢
⁢
N
⁢
⁢
R
ij
(
m
)
=
S
⁢
⁢
N
⁢
⁢
R
i
(
R
)
⁢
S
⁢
⁢
N
⁢
⁢
R
j
(
m
)
S
⁢
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N
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R
i
(
R
)
+
S
⁢
⁢
N
⁢
⁢
R
j
(
m
)
+
1
;
wherein SNRi(R) is the signal-to-noise ratio of a communication link between the BS and the RS on a sub-channel indexed by i;
SNRj(m) is the signal-to-noise ratio of a communication link between the RS and the UE indexed by m on the sub-channel indexed by i .

72 more elements

A resource allocation device for an amplify-and-forward relay network, the device comprising:

a processor;
and
a memory coupled to the processor and storing instructions that, when executed by the processor, cause the processor to:
obtain channel information, wherein the channel information comprises channel information between a base station (BS) and an relay station (RS) and channel information between an RS and each user equipment (UE);
calculate, according to the channel information, resource use information of each UE on each sub-channel pairing;
and
obtain, according to the resource use information, the number of resource elements REs allocated to each UE on each sub-channel pairing, wherein the obtained number of the REs enables a preset first function to obtain a maximum value;
wherein the channel information is the signal-to-noise ratio;
the resource use information is the number of bits;
and a formula for calculating, according to the channel information, resource use information of each UE on each sub-channel pairing is:
bij(m)=f(Rij(m));
wherein bij(m) indicates the number of bits that may be carried by each RE of a UE indexed by m on a sub-channel pairing indexed by (i, j);
f(*) indicates a mapping modulated according to adaptive codes;
Rij(m) indicates a transmission rate of the UE indexed by m on the sub-channel pairing indexed by and (i, j), and a formula for calculating Rij(m) is as follows:
Rij(m)=Wb log(1+SNR(m)ij);
wherein Wb is bandwidth of each RE, and a formula for calculating SNRij(m) is as follows:
S
⁢
⁢
N
⁢
⁢
R
ij
(
m
)
=
S
⁢
⁢
N
⁢
⁢
R
i
(
R
)
⁢
S
⁢
⁢
N
⁢
⁢
R
j
(
m
)
S
⁢
⁢
N
⁢
⁢
R
i
(
R
)
+
S
⁢
⁢
N
⁢
⁢
R
j
(
m
)
+
1
;
wherein SNRi(R) is a signal-to-noise ratio of a communication link between the BS and RS on a sub-channel indexed by i;
SNRj(m) is a signal-to-noise ratio of a communication link between the RS and the UE indexed by m on the sub-channel indexed by j.

76 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/633,498Filed 2 Oct 2012 · continuation
Priority: CN 2010 1 017592513 May 2010
Published: US 2013/0028171 A131 Jan 2013
Granted: 2 Jul 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04W 28/06
Traffic management, e.g. flow control or congestion control: optimizing the usage of the radio link, e.g. header compression, information sizing ,…
H04W 48/16
Access restriction ; Network selection; Access point selection: discovering, processing access restriction or access information
H04W 72/00
Local resource management
H04W 72/04
Local resource management: wireless resource allocation