Signaling and utilization of resource allocation information
Provided are a radio transmission apparatus and a radio transmission method whereby the increase of number of signaling bits can be suppressed and further the flexibility of frequency scheduling can be improved. A notified RBG calculating unit ( 203 ) that adds a predetermined offset value of “1” or “−1” to one of the start RBG number and the end RBG number of allocated RBG number information (b′i) output by a scheduling unit ( 201 ), thereby calculating notified RBG number information (bi). An RBG total number setting unit ( 204 ) calculates the total number of RBGs, which is to be notified, by adding “1” to the total number of allocated RBGs. A notified information generating unit ( 205 ) applies the notified RBG number information (bi) and the notified total number of RBGs (Nrb′) to a predetermined formula, thereby generating and transmitting, to terminals, notified information (r).
1. A base station comprising:
a transmitter to transmit resource allocation information that indicates at least two clusters of resource block groups (RBGs), wherein:
a first cluster of the at least two clusters has one or more first RBGs;
a second cluster of the at least two clusters has one or more second RBGs and is separated from the first cluster in a frequency domain; and
the resource allocation information has a combinatorial index that is calculated by using: a starting RBG index of the first cluster; a first index obtained by adding one to an ending RBG index of the first cluster; a starting RBG index of the second cluster; a second index obtained by adding one to an ending RBG index of the second cluster; and a number that is obtained by adding one to a total number of RBGs included in an uplink system bandwidth; and
a receiver to receive data in the at least two clusters.
2. The base station according to claim 1 , wherein the first cluster includes a single RBG and the starting RBG index of the first cluster equals the ending RBG index of the first cluster.
3. The base station according to claim 1 , wherein the starting RBG index of the first cluster is s 1 , the first index is e 1 , the starting RBG index of the second cluster is s 2 , and the second index is e 2 , the number is N, and the combinatorial index is generated based on the following formula:
∑
i
=
0
2
M
-
1
〈
N
-
b
i
2
M
-
i
〉
,
b
i
=
{
s
1
,
e
1
,
s
2
,
e
2
}
,
s
1
<
e
1
<
s
2
<
e
2
in which M is a total number of the at least two clusters, wherein M equals two.
4. A communication method comprising:
transmitting, from a base station to a terminal apparatus, resource allocation information that indicates at least two clusters of resource block groups (RBGs), wherein:
a first cluster of the at least two clusters has one or more first RBGs;
a second cluster of the least two clusters has one or more second RBGs and is separated from the first cluster in a frequency domain; and
the resource allocation information has a combinatorial index that is calculated by using: a starting RBG index of the first cluster; a first index obtained by adding one to an ending RBG index of the first cluster; a starting RBG index of the second cluster; a second index obtained by adding one to an ending RBG index of the second cluster; and a number that is obtained by adding one to a total number of RBGs included in an uplink system bandwidth; and
receiving data from the terminal apparatus in the at least two clusters.
5. The communication method according to claim 4 , wherein the first cluster includes a single RBG and the starting RBG index of the first cluster equals the ending RBG index of the first cluster.
6. The communication method according to claim 4 , wherein the starting RBG index of the first cluster is s 1 , the first index is e 1 , the starting RBG index of the second cluster is s 2 , and the second index is e 2 , the number is N, and the combinatorial index is generated based on the following formula:
∑
i
=
0
2
M
-
1
〈
N
-
b
i
2
M
-
i
〉
,
b
i
=
{
s
1
,
e
1
,
s
2
,
e
2
}
,
s
1
<
e
1
<
s
2
<
e
2
in which M is a total number of the at least two clusters, wherein M equals two.
7. An apparatus comprising:
first circuitry to set a first number by adding one to a total number of resource block groups (RBGs) in an uplink system bandwidth; and
second circuitry, coupled with the first circuitry, to generate notification information to indicate allocation of a plurality of sets of RBGs, wherein:
a first set of the plurality of sets has one or more first RBGs;
a second set of the plurality of sets has one or more second RBGs, the second set being separated from the first set in a frequency domain; and
the notification information has a combinatorial index that is based on: a starting RBG index of the first set; a first index obtained by adding one to an ending RBG index of the first set; a starting RBG index of the second set; a second index obtained by adding one to an ending RBG index of the second set; and the first number.
8. The apparatus of claim 7 , wherein the first set includes a single RBG and the starting RBG index of the first set equals the ending RBG index of the first set.
9. The apparatus of claim 7 , wherein the starting RBG index of the first set is s 1 , the first index is e 1 , the starting RBG index of the second set is s 2 , the second index is e 2 , the number is N, and the combinatorial index is generated based on the following formula:
∑
i
=
0
2
M
-
1
〈
N
-
b
i
2
M
-
i
〉
,
b
i
=
{
s
1
,
e
1
,
s
2
,
e
2
}
,
s
1
<
e
1
<
s
2
<
e
2
in which M is a total number of the plurality of sets, wherein M equals two.
10. The apparatus of claim 7 , wherein the one or more first RBGs includes at least two consecutive first RBGs.
11. The apparatus of claim 7 , further comprising:
third circuitry to transmit the notification information to a terminal apparatus.
12. A method comprising:
receiving, from a base station, notification information that indicates an allocation of a plurality of sets of resource block groups (RBGs), wherein:
a first set of the plurality of sets has one or more first RBGs;
a second set of the plurality of sets has one or more second RBGs, the second set being separated from the first set in a frequency domain; and
the notification information has a combinatorial index that is based on: a starting RBG index of the first set; a first index obtained by adding one to an ending RBG index of the first set; a starting RBG index of the second set; a second index obtained by adding one to an ending RBG index of the second set; and a number that is obtained by adding one to a total number of RBGs included in an uplink system bandwidth; and
transmitting data to the base station in the plurality of sets of RBGs.
13. The method of claim 12 , wherein the first set includes a single RBG and the starting RBG index of the first set equals the ending RBG index of the first set.
14. The method of claim 12 , wherein the starting RBG index of the first set is s 1 , the first index is e 1 , the starting RBG index of the second set is s 2 , the second index is e 2 , the number is N, and the combinatorial index is generated based on the following formula:
∑
i
=
0
2
M
-
1
〈
N
-
b
i
2
M
-
i
〉
,
b
i
=
{
s
1
,
e
1
,
s
2
,
e
2
}
,
s
1
<
e
1
<
s
2
<
e
2
in which M is a total number of the plurality of sets, wherein M equals two.
15. The method of claim 12 , wherein the one or more first RBGs includes at least two consecutive first RBGs.
16. One or more non-transitory, computer-readable media having instructions that, when executed by one or more processors, cause a terminal to:
receive, from a base station, notification information that indicates an allocation of a plurality of sets of resource block groups (RBGs), wherein:
a first set of the plurality of sets has one or more first RBGs;
a second set of the plurality of sets has one or more second RBGs, the second set being separated from the first set in a frequency domain; and
the notification information has a combinatorial index that is based on: a starting RBG index of the first set; a first index obtained by adding one to an ending RBG index of the first set; a starting RBG index of the second set; a second index obtained by adding one to an ending RBG index of the second set; and a number that is obtained by adding one to a total number of RBGs included in an uplink system bandwidth; and
generate an uplink signal to transmit data to the base station in the plurality of sets of RBGs.
17. The one or more non-transitory, computer-readable media of claim 16 , wherein the first set includes a single RBG and the starting RBG index of the first set equals the ending RBG index of the first set.
18. The one or more non-transitory, computer-readable media of claim 16 , wherein the starting RBG index of the first set is s 1 , the first index is e 1 , the starting RBG index of the second set is s 2 , the second index is e 2 , the number is N, and the combinatorial index is generated based on the following formula:
∑
i
=
0
2
M
-
1
〈
N
-
b
i
2
M
-
i
〉
,
b
i
=
{
s
1
,
e
1
,
s
2
,
e
2
}
,
s
1
<
e
1
<
s
2
<
e
2
in which M is a total number of the plurality of sets, wherein M equals two.
19. The one or more non-transitory of claim 16 , wherein the one or more first RBGs includes at least two consecutive first RBGs.
20. The one or more non-transitory of claim 16 , wherein the instructions, when executed, further cause the terminal to:
transmit the uplink signal to the base station.