FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10, Rule 131
BASE STATION, TERhfrNAL,
TRANSMISSION METHOD, AND
RECEPTION METHOD;
PANASONIC CORPORATION, A
CORPORATION ORGANIZED AND
EXISTING UNDER THE LAWS OF JAPAN,
WHOSE ADDRESS IS 1006, OAZA KADOMA,
KADOMA-SHI, OSAKA 571-8501, JAPAN
THE FOLLOWING SPECIFICATION
PARTICULARLY DESCRIBES THE
INVENTION AND THE MANNER IN WHICH
5 48hfM* WI 201%IT IS TO BE PERFORMED.
2 0 MAR 2013
DESCRIPTION
5
T e c h n i c a l F i e l d
The p r e s e n t i n v e n t i o n r e l a t e s to a base s t a t i o n , a
t e r m i n a l , a t r a n s m i s s i o n method, and a r'eception method.
10 Background Art
In recent years, in a c e l l u l a r m o b i l e communication
s y s t e m , w i t h a trend t o w a r d m u l t i m e d i a i n f o r m a t i o n ,
transmission of large-volume data, s u c h a s s t i l l i m a g e data and
m o t i o n i m a g e data, as well as sound data has been g e n e r a l i z e d .
15 In o r d e r t o r e a l i z e transmission of large-volume d a t a , s t u d i e s o n
a t e c h n i q u e f o r r e a l i z i n g a high transmission r a t e u s i n g a
high-frequency radio band has b e e n p o p u l a r l y conducted.
However, when the high-frequency radio band is used,
while a high transmission r a t e can be e x p e c t e d a t a s h o r t r a n g e ,
20 a t t e n u a t i o n d u e to a t r a n s m i s s i o n d i s t a n c e i n c r e a s e s at a longer
d i s t a n c e . A c c o r d i n g l y , when a m o b i l e communication s y s t e m
using a h i g h - f r e q u e n c y r a d i o band is p r a c t i c a l l y operated, since
t h e c o v e r a g e area o f a r a d i o communication base s t a t i o n
a p p a r a t u s ( h e r e i n a f t e r , a b b r e v i a t e d a s " b a s e s t a t i o n " ) becomes
25 small, i t is n e c e s s a r y t o e s t a b l i s h more base s t a t i o n s . The
e s t a b l i s h m e n t of the base s t a t i o n s r e q u i r e s r e a s o n a b l e costs.
Therefore, t h e r e is s t r o n g demand for a technique f o r r e a l i z i n g a
communication s e r v i c e u s i n g a high-frequency radio band while
suppressing an increase in the number of base s t a t i o n s .
For this demand, in order to expand the coverage area of
5 each base s t a t i o n , a relay transmission technique i n which a
r a d i o communication relay s t a t i o n a p p a r a t u s ( h e r e i n a f t e r ,
abbreviated as "relay s t a t i o n " ) i s provided between a base
s t a t i o n and a r a d i o communication m o b i l e station apparatus
( h e r e i n a f t e r , a b b r e v i a t e d a s " m o b i l e s t a t i o n " ) , and
10 communication between the b a s e s t a t i o n and the m o b i l e s t a t i o n i s
performed t h r o u g h t h e r e l a y s t a t i o n h a s been s t u d i e d . If the
r e l a y t e c h n i q u e is u s e d , a mobile s t a t i o n which cannot perform
d i r e c t communication with a b a s e s t a t i o n c a n perform
communication t h r o u g h a r e l a y s t a t i o n .
15 In regard to an LTE-A (Long Term Evolution Advanced)
system in which t h e i n t r o d u c t i o n of the above-described r e l a y
t e c h n i q u e has been s t u d i e d , from the viewpoint of smooth
t r a n s i t i o n from LTE (Long Term E v o l u t i o n ) a n d c o e x i s t e n c e w i t h
LTE, t h e r e i s demand for maintaining compatibility with LTE.
20 For t h i s reason, in regard to the r e l a y t e c h n i q u e , t h e r e i s demand
for mutual compatibility with LTE. In the LTE-A system, in
order to a t t a i n c o m p a t i b i l i t y w i t h LTE, at t h e t i m e of
transmission from a b a s e s t a t i o n t o a r e l a y s t a t i o n in a downlink
( h e r e i n a f t e r , r e f e r r e d t o as "DL"), the s e t t i n g o f a n MBSFN
25 (MBMS Single Frequency Network) subframe h a s b e e n s t u d i e d .
The term "MBSFN subframe" is a subframe which is d e f i n e d s o as
3 2 O MAR 2013
to transmit MBMS (Multimedia Broadcast M u l t i c a s t Service)
data. An LTE t e r m i n a l h a s a s p e c i f i c a t i o n for an o p e r a t i o n so as
not to use a reference signal in an MBSFN subframe.
Accordingly, in LTE-A, a method in which an access l i n k
subframe overlapping a backhaul link subframe used for
communication b e t w e e n the relay s t a t i o n a n d the base s t a t i o n is
set in an MBSFN subframe has been proposed. With t h i s
proposal, i t i s p o s s i b l e to avoid the LTE terminal from
erroneously d e t e c t i n g t h e reference signal.
The communication b e t w e e n t h e base s t a t i o n and the
mobile s t a t i o n through the relay station is performed by
t i m e - d i v i s i o n r e l a y (called TD r e l a y o r Type 1 r e l a y ) . Backhaul
communication ( t h a t i s , communication between the base s t a t i o n
and t h e r e l a y s t a t i o n ) and r e l a y a c c e s s l i n k communication ( t h a t
i s , communication between t h e r e l a y station and the t e r m i n a l ) a r e
divided on the time axis, t h e r e b y d i v i d i n g the t r a n s m i t t i n g t i m e
and the receiving t i m e o f t h e r e l a y s t a t i o n . Accordingly, the
r e l a y s t a t i o n c a n perform relay without being affected by
wraparound b e t w e e n a t r a n s m i t t i n g antenna a n d a receiving
a n t e n n a .
FIG. 1 shows an example o f a n a l l o c a t i o n s t a t e of
c o n t r o l s i g n a l s and data for each station of a base s t a t i o n , a r e l a y
s t a t i o n , and a mobile s t a t i o n when
is used. As shown in FIG. 1, in
control signal which is transmitted
arranged in a PDCCH (Physical
a subframe of an LTE system
the LTE system, a downlink
or received in e a c h s t a t i o n is
Downlink C o n t r o l C h a n n e l )
2 0 MAR 2013
region of a head p o r t i o n of the subframe. That is, both the base
s t a t i o n and the r e l a y s t a t i o n t r a n s m i t t h e control signal in the
PDCCH r e g i o n of the head portion of the subframe. When
f o c u s i n g on t h e r e l a y s t a t i o n , s i n c e the downlink c o n t r o l s i g n a l
5 should be t r a n s m i t t e d t o t h e m o b i l e station even i n the MBSFN
subframe, t h e r e l a y s t a t i o n t r a n s m i t s the control signal to the
m o b i l e s t a t i o n and i s t h e r e a f t e r s w i t c h e d t o r e c e i v i n g p r o c e s s i n g ,
thereby preparing for receiving a s i g n a l t r a n s m i t t e d from the
base s t a t i o n . However, s i n c e t h e b a s e s t a t i o n a l s o t r a n s m i t s the
10 downlink control s i g n a l intended for t h e r e l a y s t a t i o n at the
timing at which the r e l a y s t a t i o n t r a n s m i t s t h e d o w n l i n k c o n t r o l
s i g n a l to the mobile s t a t i o n , t h e re!ay s t a t i o n c a n n o t r e c e i v e the
downlink control signal transmitted from t h e b a s e s t a t i o n . In
o r d e r t o avoid t h i s i n c o n v e n i e n c e , in the LTE-A, providing a
15 region for arranging the downlink c o n t r o l signal for the r e l a y
s t a t i o n (R-PDCCH (Relay PDCCH) region) in a data region has
b e e n s t u d i e d .
In LTE, a DL grant i n s t r u c t i n g DL d a t a a l l o c a t i o n a n d a
UL g r a n t i n s t r u c t i n g UL data allocation are included in the
20 PDCCH. With the DL g r a n t , a resource in a subframe in which
the DL grant is t r a n s m i t t e d i s a l l o c a t e d t o t h e m o b i l e s t a t i o n .
In r e g a r d to the UL g r a n t , in an FDD s y s t e m , w i t h the UL g r a n t , a
r e s o u r c e in a t a r g e t subframe next to f o u r s u b f r a m e s a f t e r a
subframe in which the UL grant is transmitted is a l l o c a t e d to the
25 mobile s t a t i o n . In a TDD s y s t e m , with the UL g r a n t , a resource
in a t a r g e t subframe next to f o u r o r more s u b f r a m e s a f t e r a
2 0 MAR 2013
subframe in which the UL g r a n t i s transmitted i s a l l o c a t e d to the
mobile s t a t i o n . In the TDD system, how many subframes are
next t o a subframe to which a r e s o u r c e is allocated by the UL
grant a f t e r a subframe in which the UL grant i s t r a n s m i t t e d is
5 determined in a c c o r d a n c e w i t h a p a t t e r n in which an uplink a n d a
downlink are t i m e - d i v i d e d ( h e r e i n a f t e r , r e f e r r e d t o as "ULIDL
c o n f i g u r a t i o n p a t t e r n " ) .
In LTE-A, including a DL g r a n t a n d a UL g r a n t in an
R-PDCCH h a s b e e n s t u d i e d . In the R-PDCCH, arranging t h e DL
10 grant in a f i r s t s l o t a n d the UL grant in a second s l o t has been
studied (see NPLs 1 and 2). In this way, if the DL grant is
a r r a n g e d o n l y in the f i r s t s l o t , the d e c o d i n g d e l a y of the DL grant
i s r e d u c e d , t h e r e b y p r e p a r i n g for ACKINACK transmission for
DL d a t a ( i n FDD, transmission next to four s u b f r a m e s a f t e r
15 reception of t h e DL g r a n t ) .
A s shown in FIG. 2, a method in which a r e s o u r c e block
of a p h y s i c a l l a y e r (PRB) in which a n R-PDCCH region is
provided d i f f e r s between the relay s t a t i o n s h a s been s t u d i e d .
T h e r e l a y s t a t i o n performs blind decoding on the downlink
20 control s i g n a l , which i s transmitted from the b a s e s t a t i o n u s i n g
the R-PDCCH region in this way, in a r e s o u r c e r e g i o n i n s t r u c t e d
from t h e b a s e s t a t i o n by higher l a y e r s i g n a l i n g , a n d the downlink
control s i g n a l intended for the relay s t a t i o n i s f o u n d .
25 Citation List
Non-Patent L i t e r a t u r e
2 0 MAR 2013
NPL 1
3GPP TSG RAN WGl meeting, R1-102700, "Backhaul Control
Channel Design in Downlink," May 2010
5 NPL 2
3GPP TSG RAN WGl m e e t i n g , R1-102881, "R-PDCCH
p l a c e m e n t , " May 2010
Summary of Invention
10 Technical Problem
On t h e o t h e r h a n d , h e r e i n a f t e r , c o n s i d e r i n g M2M
(Machine t o Machine) communication o r the like in which
v a r i o u s devices are introduced as a radio communication
t e r m i n a l , t h e r e is a concern for a l a c k o f resources o f a region
15 ( h e r e i n a f t e r , referred to a s "PDCCH r e g i o n " ) , t o which the
PDCCH i s mapped, due t o a n i n c r e a s e in t h e number of t e r m i n a l s .
If t h e PDCCH c a n n o t be mapped d u e t o a lack of r e s o u r c e s ,
d o w n l i n k d a t a a l l o c a t i o n for t e r m i n a l s c a n n o t be performed.
For t h i s reason, even when a r e s o u r c e r e g i o n t o which downlink
20 data i s mapped ( h e r e i n a f t e r , r e f e r r e d t o a s "PDSCH region") i s
empty, the r e s o u r c e r e g i o n cannot be used, and system
t h r o u g h p u t may b e d e g r a d e d . A s a method o f e l i m i n a t i n g a lack
of r e s o u r c e s , a r r a n g i n g a c o n t r o l s i g n a l toward a t e r m i n a l under
the base s t a t i o n in a region to which the above-described
25 R-PDCCH is mapped ( h e r e i n a f t e r , referred to a s "R-PDCCH
r e g i o n " ) has been c o n s i d e r e d (see FIG. 3).
2 0 MAR 2013
However, when a control s i g n a l toward a t e r m i n a l under
t h e b a s e s t a t i o n is mapped. to the R-PDCCH region and
t r a n s m i t t e d , d e l a y in p r o c e s s i n g corresponding t o the control
signal in the terminal becomes p r o b l e m a t i c .
That i s , a s d e s c r i b e d above, in LTE and LTE-A, the
t i m i n g o f t r a n s m i t t i n g ACKINACK for DL data and the timing of
t r a n s m i t t i n g UL d a t a are defined on the basis of subframes in
w h i c h t h e DL grant and the UL g r a n t a s c o n t r o l s i g n a l s are
received. The PDCCH region and the R-PDCCH region are
arranged in order of the PDCCH region and the R-PDCCH r e g i o n
in a time d i r e c t i o n . A c c o r d i n g l y , when a c o n t r o l s i g n a l i s
mapped to the R-PDCCH region a n d t r a n s m i t t e d , the t e r m i n a l h a s
no margin up to the time at which p r o c e s s i n g corresponding to
t h e r e c e i v e d control s i g n a l should be completed, compared t o a
c a s e w h e r e a c o n t r o l s i g n a l i s mapped to the PDCCH region and
t r a n s m i t t e d .
This problem becomes problematic in t h e r e l a y station
in addition to a t e r m i n a l which p e r f o r m s communication with the
b a s e s t a t i o n , and in p a r t i c u l a r , becomes conspicuous in a
t e r m i n a l w h i c h r e q u i r e s high r e s t r i c t i o n s on c i r c u i t s c a l e and
power consumption.
An o b j e c t o f the i n v e n t i o n i s to provide a base s t a t i o n , a
t e r m i n a l , a t r a n s m i s s i o n method,
of a l l o w i n g d a t a p r o c e s s i n g o n a
r e g a r d l e s s of t h e t i m e p o s i t i o n
control information i s mapped.
8
a n d a r e c e p t i o n method c a p a b l e
reception side to have a margin
of a r e s o u r c e r e g i o n t o which
2 0 MAR 2013
S o l u t i o n to Problem
According t o a n aspect of t h e i n v e n t i o n , t h e r e is
provided a base s t a t i o n w h i c h maps control information to one of
a f i r s t r e s o u r c e r e g i o n and a second r e s o u r c e r e g i o n provided in
o r d e r in a t i m e d i r e c t i o n in a subframe and t r a n s m i t s the control
i n f o r m a t i o n . The base s t a t i o n i n c l u d e s d e t e r m i n i n g section t h a t
d e t e r m i n e s w h e t h e r a subframe to be determined is a f i r s t t y p e
subframe in which control information is mapped o n l y to the f i r s t
r e s o u r c e region or a second type subframe in w h i c h t h e control
information is mapped t o b o t h the f i r s t r e s o u r c e region and the
s e c o n d r e s o u r c e r e g i o n in accordance with a configuratirjn
p a t t e r n which is applied to the base s t a t i o n and i s o n e of a
p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s h a v i n g d i f f e r e n t downlink a n d
uplink subframe c o n f i g u r a t i o n s in t i m e - d i v i s i o n m u l t i p l e x , a n d
d e c i d i n g section t h a t d e c i d e s a mapping region, t o which the
c o n t r o l information is mapped, in the f i r s t r e s o u r c e region or the
second r e s o u r c e r e g i o n i n t h e subframe to be determined on the
b a s i s o f t h e determination r e s u l t in t h e d e t e r m i n i n g s e c t i o n .
According to another aspect of the i n v e n t i o n , t h e r e is
provided a terminal which receives control information i n o n e of
a f i r s t r e s o u r c e r e g i o n a n d a second r e s o u r c e r e g i o n provided in
o r d e r i n a t i m e d i r e c t i o n in a s u b f r a m e . The terminal includes
d e t e r m i n i n g s e c t i o n t h a t d e t e r m i n e s w h e t h e r a subframe to be
determined is a f i r s t type subframe in w h i c h c o n t r o l i n f o r m a t i o n
is mapped only to the f i r s t r e s o u r c e r e g i o n or a second type
2 0 MAR 2013
subframe in which t h e c o n t r o l i n f o r m a t i o n is mapped to both the
f i r s t r e s o u r c e r e g i o n and the s e c o n d r e s o u r c e r e g i o n in
accordance with a c o n f i g u r a t i o n p a t t e r n which is applied to the
base s t a t i o n and is one of a p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s
5 h a v i n g d i f f e r e n t d o w n l i n k and uplink subframe configurations in
t i m e - d i v i s i o n m u l t i p l e x , and s p e c i f y i n g s e c t i o n t h a t s p e c i f i e s a
mapping r e g i o n c a n d i d a t e , to which the control i n f o r m a t i o n i s
mapped, in t h e f i r s t r e s o u r c e r e g i o n or the s e c o n d r e s o u r c e
region in the subframe to be determined on the b a s i s of the
10 d e t e r m i n a t i o n r e s u l t by t h e d e t e r m i n i n g s e c t i o n .
According t o a f u r t h e r aspect of the i n v e n t i o n , t h e r e is
p r o v i d e d a t r a n s m i s s i o n method w h i c h maps c o n t r o l i n f o r m a t i o n
to one of a f i r s t resource region and a second r e s o u r c e r e g i o n
provided in order in a t i m e d i r e c t i o n in a subframe and t r a n s m i t s
15 the control information. T h e t r a n s m i s s i o n method includes the
s t e p s of determining whether a subframe to be determined is a
f i r s t type subframe in w h i c h c o n t r o l i n f o r m a t i o n is mapped only
to the f i r s t resource region or a s e c o n d t y p e subframe in which
the control information i s mapped to both t h e f i r s t resource
20 region and the second r e s o u r c e r e g i o n in accordance with a
c o n f i g u r a t i o n pattern which is a p p l i e d to the base s t a t i o n and i s
one o f a p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s h a v i n g d i f f e r e n t
downlink and uplink subframe c o n f i g u r a t i o n s in t i m e - d i v i s i o n
m u l t i p l e x , and d e c i d i n g a mapping region, to which the control
25 i n f o r m a t i o n i s mapped, i n t h e f i r s t r e s o u r c e r e g i o n o r t h e second
resource region in the subframe to b e determined o n the b a s i s of
10
2 9 MAR 2813
t h e r e s u l t of the d e t e r m i n a t i o n .
According to s t i l l another aspect of t h e i n v e n t i o n , there
is p r o v i d e d a r e c e p t i o n method which r e c e i v e s control
information in one of a f i r s t resource region and a second
5 r e s o u r c e r e g i o n provided in order in a t i m e d i r e c t i o n in a
subframe. The reception method includes t h e s t e p s of
determining whether a subframe to be determined is a f i r s t type
subframe i n which c o n t r o l i n f o r m a t i o n i s mapped o n l y to the f i r s t
r e s o u r c e r e g i o n o r a s e c o n d t y p e subframe in which the control
10 information is mapped t o both tbe f i r s t r e s o u r c e region and the
second r e s o u r c e r e g i o n in accordance with a c o n f i g u r a t i o n
p a t t e r n which is applied to the base s t a t i o n and i s o n e of a
p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s having d i f f e r e n t d o w n l i n k and
uplink subframe c o n f i g u r a t i o n s in t i m e - d i v i s i a n m u l t i p l e x , and
15 s p e c i f y i n g a mapping region candidate, t o which the control
information is mapped, in the f i r s t r e s o u r c e r e g i o n o r the second
r e s o u r c e r e g i o n in the subframe to be determined on t h e b a s i s of
the r e s u l t o f the d e t e r m i n a t i o n .
20 Advantageous Effects of Invention
According to the i n v e n t i o n , i t is p o s s i b l e to provide a
base s t a t i o n , a t e r m i n a l , a t r a n s m i s s i o n method, a n d a reception
method capable of allowing data processing o n a r e c e p t i o n side
to have a margin r e g a r d l e s s of the time p o s i t i o n of a resource
25 region to which control i n f o r m a t i o n i s mapped.
2 8 MAR 2013
B r i e f D e s c r i p t i o n of Drawings
FIG. 1 is a diagram showing an example of an a l l o c a t i o n
s t a t e of control s i g n a l s and data for each s t a t i o n of a base s t a t i o n ,
a r e l a y s t a t i o n , and a m o b i l e station when a subframe of an LTE
s y s t e m i s used;
FIG. 2 is a d i a g r a m showing a c o n f i g u r a t i o n example of an
R-PDCCH;
FIG. 3 is a diagram showing an example of an R-PDCCH
region;
FIG. 4 is a m a i n configuration diagram of a base s t a t i o n
according t o Embodiment 1 of the i n v e n t i o n ;
FIG. 5 is a main configuration diagram of a t e r m i n a l
according to Embodiment 1 of t h e i n v e n t i o n ;
FIG. 6 i s a b l o c k diagram showing the c o n f i g u r a t i o n of t h e
base s t a t i o n a c c o r d i n g to Embodiment 1 of the i n v e n t i o n ;
FIG. 7 is a b l o c k diagram showing the c o n f i g u r a t i o n of t h e
i s s i o n
terminal according to Embodiment 1 of t h e i n v e n t i o n ;
FIG. 8 is a d i a g r a m showing an example of a transm
r u l e t a b l e ;
FIG. 9 is a diagram showing an example of a transm
r u l e t a b l e ;
i s s i o n
FIG. 10 is a diagram showing a t r a n s m i s s i o n s t a t e of
control i n f o r m a t i o n , downlink data, and r e t r a n s m i s s i o n c o n t r o l
information by a c o n f i g u r a t i o n p a t t e r n 1 ;
FIG. 11 is a diagram showing an example of a s w i t c h i n g
subframe;
FIG. 1 2 i s a d i a g r a m showing an example o f a transm
rule t a b l e which i s u s e d in a r e l a y s t a t i o n and a t e r m i n a l ;
FIG. 13 is a d i a g r a m showing an example o f a transm
rule t a b l e which is used in a r e l a y s t a t i o n and a t e r m i n a l ;
i s s i o n
i s s i o n
FIG. 14 is a diagram showing an example o f a transmission
r u l e t a b l e a c c o r d i n g to Embodiment 2 of t h e i n v e n t i o n ; and
FIG. 15 is a diagram showing a transmission s t a t e of
control information and uplink data by the c o n f i g u r a t i o n p a t t e r n
1.
Description of Embodiments
H e r e i n a f t e r , embodiments of the i n v e n t i o n w i l l be
described in d e t a i l with reference to t h e d r a w i n g s . In the
embodiments, the same c o n s t i t u e n t e l e m e n t s are represented by
the same r e f e r e n c e n u m e r a l s , and o v e r l a p p i n g d e s c r i p t i o n w i l l
not be r e p e a t e d .
(Embodiment 1 )
[Overview of Communication System]
A communication system a c c o r d i n g t o Embodiment 1 of the
invention has b a s e s t a t i o n 100 and t e r m i n a l 2 0 0 . Base s t a t i o n
100 is an LTE-A base s t a t i o n , and t e r m i n a l 2 0 0 is an LTE-A
terminal.
FIG. 4 is a main c o n f i g u r a t i o n d i a g r a m o f b a s e s t a t i o n
100 according to Embodiment 1 of t h e i n v e n t i o n . Base s t a t i o n
100 maps c o n t r o l i n f o r m a t i o n to one of a f i r s t r e s o u r c e r e g i o n
13 2.0 MAR 2013
( f o r e x a m p l e , PDCCH region) and a second r e s o u r c e r e g i o n ( f o r
example, R-PDCCH r e g i o n ) p r o v i d e d in order in a time d i r e c t i o n
in a subframe a n d t r a n s m i t s the control i n f o r m a t i o n . I n base
s t a t i o n 100, subframe t y p e d e t e r m i n i n g s e c t i o n 101 determines
5 whether a subframe to be determined is a f i r s t t y p e subframe in
w h i c h t h e c o n t r o l information can be mapped only to the f i r s t
r e s o u r c e region or a second type subframe in w h i c h t h e control
i n f o r m a t i o n c a n be mapped to both the f i r s t r e s o u r c e r e g i o n a n d
the second resource region, in accordance with a c o n f i g u r a t i o n
10 p a t t e r n which is applied to the base s t a t i o n and is one of a
p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s (ULIDL c o n f i g u r a t i o n
p a t t e r n s ) having downlink subframe and uplink subframe
c o n f i g u r a t i o n s in time-division m u l t i p l e x . A l l o c a t i o n r e g i o n
c a n d i d a t e d e c i d i n g s e c t i o n 102 d e c i d e s a mapping region, to
15 which the control information is mapped, i n the f i r s t r e s o u r c e
r e g i o n o r the second r e s o u r c e r e g i o n i n t h e subframe to be
determined on t h e b a s i s of the determination r e s u l t ' b y subframe
type d e t e r m i n i n g s e c t i o n 1 0 1 .
FIG. 5 is main c o n f i g u r a t i o n diagram of terminal 200
20 according to Embodiment 1 of t h e i n v e n t i o n . Terminal 200
r e c e i v e s c o n t r o l i n f o r m a t i o n in one of a f i r s t r e s o u r c e r e g i o n a n d
a second r e s o u r c e r e g i o n p r o v i d e d in order in a t i m e d i r e c t i o n in
a subframe. In terminal 200, subframe type determining section
2 0 5 d e t e r m i n e s w h e t h e r a subframe to be determined is a f i r s t
25 type subframe to which the c o n t r o l i n f o r m a t i o n c a n be mapped to
the f i r s t r e s o u r c e r e g i o n o r a second t y p e subframe in which the
c o n t r o l i n f o r m a t i o n c a n be mapped t o b o t h the f i r s t resource
region a n d t h e s e c o n d r e s o u r c e r e g i o n in a c c o r d a n c e w i t h a
c o n f i g u r a t i o n pattern which is a p p l i e d t o .the terminal and is one
of a p l u r a l i t y of c o n f i g u r a t i o n patterns h a v i n g d i f f e r e n t
5 downlink subframe and uplink subframe c o n f i g u r a t i o n s in
time-division m u l t i p l e x . A l l o c a t i o n r e g i o n c a n d i d a t e
specifying section 206 s p e c i f i e s a mapping r e g i o n c a n d i d a t e , to
which the control i n f o r m a t i o n i s mapped, in the f i r s t resource
region or the second r e s o u r c e region in the subframe to be
10 determined o n the basis of the determination r e s u l t by subframe
t y p e d e t e r m i n i n g section 205.
[Configuration of Base S t a t i o n 1001
FIG. 6 is a block diagram showing the c o n f i g u r a t i o n of
b a s e s t a t i o n 100 according t o Embodiment 1 of the invention.
15 In FIG. 6 , base s t a t i o n 100 has subframe t y p e d e t e r m i n i n g s e c t i o n
1 0 1 , a l l o c a t i o n region candidate deciding s e c t i o n 1 0 2 , c o n t r o l
s i g n a l a l l o c a t i n g s e c t i o n 1 0 3 , e r r o r correction e n c o d i n g s e c t i o n
1 0 4 , modulating s e c t i o n 1 0 5 , s i g n a l a l l o c a t i n g s e c t i o n 1 0 6 , r a d i o
t r a n s m i t t i n g section 107, radio r e c e i v i n g s e c t i o n 108,
20 demodulating section 109, and e r r o r c o r r e c t i o n d e c o d i n g s e c t i o n
110.
Subframe t y p e d e t e r m i n i n g section 1 0 1 d e t e r m i n e s the
type of a subframe to be determined.
S p e c i f i c a l l y , subframe type d e t e r m i n i n g s e c t i o n 1 0 1
25 determines whether the subframe to be determined is t h e f i r s t
type subframe in which the control information can be mapped
only to t h e PDCCH r e g i o n or the second type subframe in which
the control information can be mapped to both the PDCCH region
and the R-PDCCH region. The control i n f o r m a t i o n i s downlink
a l l o c a t i o n c o n t r o l i n f o r m a t i o n ( t h a t i s , DL g r a n t ) which i n s t r u c t s
5 a mapping r e g i o n to which a downlink data s i g n a l i s mapped.
Subframe t y p e d e t e r m i n i n g s e c t i o n 101 d e t e r m i n e s w h e t h e r the
subframe to be determined is t h e f i r s t type subframe or the
s e c o n d t y p e subframe in a c c o r d a n c e w i t h a "ULIDL c o n f i g u r a t i o n
p a t t e r n " w h i c h is applied to the base s t a t i o n . T h e ULIDL
10 c o n f i g u r a t i o n p a t t e r n is a downlink subframe a n d u p l i n k
subframe c o n f i g u r a t i o n p a t t e r n in t i m e - d i v i s i o n m u l t i p l e x . T h e
ULIDL c o n f i g u r a t i o n p a t t e r n i s s e t for each b a s e s t a t i o n 1 0 0 .
A c c o r d i n g l y , a common ULIDL c o n f i g u r a t i o n p a t t e r n is used
b e t w e e n b a s e s t a t i o n 100 a n d a l l t e r m i n a l s 2 0 0 in a cell of base
15 s t a t i o n 100. The ULIDL configuration p a t t e r n may be shared
b e t w e e n b a s e s t a t i o n 100 a n d t e r m i n a l 2 0 0 a t t h e t i m e of i n i t i a l
access of terminal 200 to base station 100, or may be included in
n o t i f i c a t i o n i n f o r m a t i o n from base s t a t i o n 100 and n o t i f i e d to
terminal 200. F o r example, the ULIDL c o n f i g u r a t i o n p a t t e r n
20 and a DwPTS l e n g t h a r e included in a c o n t r o l s i g n a l , called SIB1
(System Information Block Type 1 m e s s a g e ) , a n d t r a n s m i t t e d
from b a s e s t a t i o n 100 to t e r m i n a l 2 0 0 in a broadcast manner.
Terminal 200 receives the c o n t r o l s i g n a l when b e i n g c o n n e c t e d to
base station 100, a n d u s e s the same v a l u e f o r a w h i l e . When
25 t h e r e i s a change in the v a l u e , b a s e s t a t i o n 1 0 0 t r a n s m i t s a
paging message to terminal 200 such t h a t terminal 200 receives
SIB1 again.
S p e c i f i c a l l y , subframe type determining section 101
r e c e i v e s i d e n t i f i c a t i o n i n f o r m a t i o n of the subframe to be
determined, UL/DL c o n f i g u r a t i o n p a t t e r n i n f o r m a t i o n , a n d the
DwPTS length as input. Subframe type determining section 101
determines whether the subframe to be determined i s t h e f i r s t
type subframe o r t h e second type subfiame on the basis of the
i d e n t i f i c a t i o n i n f o r m a t i o n o f the subframe to be determined, the
ULlDL c o n f i g u r a t i o n pattern i n f o r m a t i ~ n , a n d a " t r a n s m i s s i o n
r u l e t a b l e " .
In the "transmission rule t a b l e " , in r e g a r d t o e a c h o f a
p l u r a l i t y of configuration p a t t e r n s h a v i n g d i f f e r e n t downlink
subframe a n d u p l i n k subframe c o n f i g u r a t i o n s , a p l u r a l i t y of
downlink subframes in t h e c o n f i g u r a t i o n p a t t e r n a r e a s s o c i a t e d
with uplink subframes i n which a r e t r a n s m i s s i o n control signal
r e l a t i n g to the downlink d a t a s i g n a l corresponding to the
downlink a l l o c a t i o n c o n t r o l information to be transmitted in
each downlink subframe can be t r a n s m i t t e d . When t h e i n t e r v a l
between a downlink subframe t o b e determined in which
downlink a l l o c a t i o n c o n t r o l i n f o r m a t i o n i s t r a n s m i t t e d and an
uplink subframe a s s o c i a t e d w i t h the downlink subframe to be
determined in the transmission rule t a b l e i s e q u a l to or g r e a t e r
t h a n a "predetermined v a l u e " , subframe type d e t e r m i n i n g s e c t i o n
1 0 1 d e t e r m i n e s t h e downlink subframe to be determined a s the
s e c o n d t y p e subframe. T h e " p r e d e t e r m i n e d value"
example, five subframes.
is, for
2 0 MAR 2013
T h e c o n f i g u r a t i o n p a t t e r n i n c l u d e s s w i t c h i n g s u b f r a m e s
in addition to the downlink subframes a n d the uplink subframes.
Each switching subframe i n c l u d e s a d o w n l i n k p e r i o d , a n uplink
p e r i o d , a n d a guard period which is not used in both the downlink
5 period and the u p l i n k p e r i o d . Accordingly, i n t h e " t r a n s m i s s i o n
r u l e t a b l e " , in r e g a r d t o e a c h of a p l u r a l i t y of c o n f i g u r a t i o n
p a t t e r n s having d i f f e r e n t c o n f i g u r a t i o n s , t h e s w i t c h i n g
subframes i n t h e c o n f i g u r a t i o n pattern are a s s o c i a t e d w i t h uplink
subframes in which the retransmission control s i g n a l r e l a t i n g to
10 t h e d o w n l i n k data s i g n a l c o r r e s p o n d i n g to the downlink
a l l o c a t i o n control information to be t r a n s m i t t e d in the downlink
period of e a c h s w i t c h i n g subframe can b e t r a n s m i t t e d . When
t h e i n t e r v a l between a s w i t c h i n g subframe to be determined and
an uplink subframe a s s o c i a t e d with the s w i t c h i n g subframe to be
15 determined in t h e t r a n s m i s s i o n r u l e t a b l e is equal to or g r e a t e r
t h a n a "predetermined v a l u e " , subframe type d e t e r m i n i n g s e c t i o n
1 0 1 d e t e r m i n e s t h e s w i t c h i n g subframe to be determined as the
s e c o n d t y p e subframe.
Subframe t y p e d e t e r m i n i n g s e c t i o n 1 0 1 may add the
20 following c o n d i t i o n a s the condition for determining the
switching subframe to be determined as t h e second type subframe.
That i s , only when the length of the downlink period of the
switching subframe to be determined i s g r e a t e r t h a n a
predetermined value, subframe type d e t e r m i n i n g s e c t i o n 101
25 d e t e r m i n e s t h e s w i t c h i n g subframe t o b e determined as the
second type subframe. The transmission rule t a b l e is s t o r e d in a
s t o r a g e s e c t i o n ( n o t shown) provided in subframe type
d e t e r m i n i n g section 101.
Allocation r e g i o n c a n d i d a t e d e c i d i n g s e c t i o n 102
decides a n a l l o c a t i o n r e g i o n c a n d i d a t e ( t h a t i s , s e a r c h s p a c e ) , to
5 which the c o n t r o l i n f o r m a t i o n i s mapped, in the PDCCH region or
the R-PDCCH region i n t h e subframe to be determined on the
b a s i s of the determination r e s u l t by subframe type determining
s e c t i o n 101. That i s , when i t i s d e t e r m i n e d that the subframe to
be determined is the f i r s t t y p e s u b f r a m e , o n l y t h e PDCCH region
10 is a region in which an a l l o c a t i o n r e g i o n candidate can b e s e t .
Meanwhile, when i t is determined t h a t t h e subframe to be
determined i s t h e second t y p e subframe, both the PDCCH region
and the R-PDCCH r e g i o n a r e r e g i o n s in which an a l l o c a t i o n
region candidate can be s e t .
15 Control signal a l l o c a t i n g s e c t i o n 1 0 3 maps t h e i n p u t
c o n t r o l s i g n a l (in this case, DL grant) i n t h e a l l o c a t i o n r e g i o n
c a n d i d a t e decided by allocation region candidate deciding
s e c t i o n 102.
Error correction encoding s e c t i o n 104 receives a
20 t r a n s m i s s i o n s i g n a l a s i n p u t , p e r f o r m s e r r o r correction encoding
on t h e i n p u t s i g n a l , a n d outputs the r e s u l t a n t s i g n a l to t h e
modulating section 105.
M o d u l a t i n g s e c t i o n 105 modulates a s i g n a l received
from e r r o r c o r r e c t i o n encoding s e c t i o n 1 0 4 and outputs t h e
25 m o d u l a t e d s i g n a l to s i g n a l a l l o c a t i n g s e c t i o n 1 0 6 .
Signal a l l o c a t i n g s e c t i o n 106 maps the modulated s i g n a l
received from the modulating s e c t i o n 105 t o a r e s o u r c e region
corresponding to t h e i n p u t control s i g n a l , a n d o u t p u t s the
r e s u l t a n t s i g n a l to r a d i o t r a n s m i t t i n g s e c t i o n 1 0 7 . S p e c i f i c a l l y ,
signal a l l o c a t i n g section 106 maps a d a t a s i g n a l i n t e n d e d for the
5 m o b i l e s t a t i o n to a resource region i n d i c a t e d by the DL grant
included in the downlink c o n t r o l s i g n a l intended for the mobile
s t a t i o n .
R a d i o t r a n s m i t t i n g section 107 p e r f o r m s r a d i o
t r a n s m i s s i o n p r o c e s s i n g , s u c h a s u p - c o n v e r s i o n , on an input
10 s i g n a l a n d t r a n s m i t s the r e s u l t a n t signal through an a n t e n n a .
R a d i o r e c e i v i n g section 108 receives a s i g n a l
t r a n s m i t t e d f r o m the terminal 200 through the a n t e n n a , p e r f o r m s
radio p r o c e s s i n g , such as down-conversion, and o u t p u t s the
r e s u l t a n t s i g n a l to demodulating section 109.
15 Demodulating s e c t i o n ' l 0 9 demodulates an i n p u t signal
and outputs the demodulated signal to e r r o r c o r r e c t i o n d e c o d i n g
section 110.
Error c o r r e c t i o n decoding s e c t i o n 110 decodes an input
s i g n a l a n d o u t p u t s t h e o b t a i n e d received s i g n a l .
20 [ C o n f i g u r a t i o n of Terminal 2001
FIG. 7 is a block diagram showing t h e c o n f i g u r a t i o n of
t e r m i n a l 2 0 0 a c c o r d i n g t o Embodiment 1 of t h e i n v e n t i o n . I n
FIG. 7, terminal 200 has radio receiving section 201, signal
s e p a r a t i n g section 2 0 2 , demodulating section 203, error
25 c o r r e c t i o n d e c o d i n g s e c t i o n 204, subframe t y p e d e t e r m i n i n g
section 205, a l l o c a t i o n r e g i o n candidate specifying s e c t i o n 206,
downlink c o n t r o l s i g n a l r e c e i v i n g section 207, error correction
e n c o d i n g s e c t i o n 2 0 8 , modulating s e c t i o n 2 0 9 , s i g n a l a l l o c a t i n g
section 2 1 0 , and r a d i o t r a n s m i t t i n g section 211.
Radio receiving s e c t i o n 201 r e c e i v e s a s i g n a l
5 t r a n s m i t t e d from b a s e s t a t i o n 100 through an a n t e n n a , performs
radio p r o c e s s i n g , such as down-conversion, and outputs the
r e s u l t a n t signal to signal s e p a r a t i n g s e c t i o n 2 0 2 .
S i g n a l s e p a r a t i n g section 202 e x t r a c t s , from a received
s i g n a l , a s i g n a l component corresponding to a r e s o u r c e region
10 i n d i c a t e d b y i n f o r m a t i o n r e l a t i n g to an allocation region
c a n d i d a t e received from a l l o c a t i o n r e g i o n c a n d i d a t e specifying
section 206, and outputs t h e e x t r a c t e d signal t o downlink control
s i g n a l r e c e i v i n g s e c t i o n 207. Signal separating section 202
e x t r a c t s a d a t a s i g n a l on the basis of a DL grant received from
15 d o w n l i n k c o n t r o l signal receiving section 207 and outputs the
data s i g n a l t o t h e demodulating s e c t i o n 203.
Demodulating s e c t i o n 203 demodulates an input s i g n a l
and o u t p u t s t h e demodulated signal to error correction decoding
section 204.
2 0 E r r o r c o r r e c t i o n decoding s e c t i o n 204 decodes an input
s i g n a l and o u t p u t s o b t a i n e d r e c e i v e d d a t a .
Subframe type determining section 205 basically has the
same function as subframe t y p e d e t e r m i n i n g section 101 of base
s t a t i o n 1 0 0 . Accordingly, d e s c r i p t i o n w i l l n o t be repeated.
2 5 Allocation r e g i o n c a n d i d a t e specifying section 206
s p e c i f i e s an a l l o c a t i o n r e g i o n c a n d i d a t e ( t h a t i s , s e a r c h space),
2 0 MAR 2M3
to w h i c h t h e control information is mapped, in t h e PDCCH region
or the R-PDCCH r e g i o n i n the subframe to be determined on the
basis of the d e t e r m i n a t i o n r e s u l t by subframe type d e t e r m i n i n g
s e c t i o n 2 0 5 . That i s , w h e n i t is determined that the subframe to
5 be determined i s the f i r s t type subframe, o n l y t h e PDCCH region
is a r e g i o n i n which a n a l l o c a t i o n r e g i o n c a n d i d a t e c a n be p r e s e n t .
Meanwhile, when i t is d e t e r m i n e d t h a t t h e subframe to be
determined is the second type s u b f r a m e , b o t h the PDCCH region
and the R-PDCCH r e g i o n a r e regions in which an a l l o c a t i o n
10 region candidate can be p r e s e n t . Information r e l a t i n g to the
s p e c i f i e d allocation region c a n d i d a t e i s output to s i g n a l
s e p a r a t i n g s e c t i o n 2 0 2 .
Downlink c o n t r o l s i g n a l r e c e i v i n g s e c t i o n 207 performs
blind decoding o n a s i g n a l received from signal s e p a r a t i n g
15 s e c t i o n 2 0 2 , a n d d e t e c t s t h e downlink c o n t r o l s i g n a l . Downlink
control s i g n a l r e c e i v i n g section 207 outputs the UL grant
included in t h e d e t e c t e d downlink control signal to signal
a l l o c a t i n g section 210, a n d o u t p u t s the DL grant to signal
s e p a r a t i n g section 202.
2 0 E r r o r c o r r e c t i o n e n c o d i n g section 208 receives
transmission d a t a a s i n p u t , p e r f o r m s e r r o r correction encoding
on transmission data, a n d o u t p u t s r e s u l t a n t d a t a t o modulating
s e c t i o n 2 0 9 .
Modulating section 209 modulates a n i n p u t s i g n a l a n d
25 outputs the modulated s i g n a l to s i g n a l a l l o c a t i n g section 210.
S i g n a l a l l o c a t i n g s e c t i o n 2 1 0 maps the modulated s i g n a l
f r o m m o d u l a t i n g s e c t i o n 2 0 9 i a a c c o r d a n c e w i t h the UL
g r a n t received from downlink c o n t r o l s i g n a l r e c e i v i n g s e c t i o n
207, and outputs the r e s u l t a n t signal to r a d i o t r a n s m i t t i n g
s e c t i o n 21 1.
5 Radio transmitting sectioo 2 11 performs radio
transmission p r o c e s s i n g , such as u p - c ~ ~ v e r s i o no,n an input
signal and t r a n s m i t s t h e r e s u l t a n t signal through the antenna.
[Operation of B a s e S t a t i o n 1 0 0 a n d Terminal 2001
T h e o p e r a t i o n s of base s t a t i o n 1 0 0 a n d t e r m i n a l 200
10 configured as above will be d e s c r i b e d . In p a r t i c u l a r , subframe
type determining processing, a l l o c a t i o n r e g i o n c a n d i d a t e
deciding p r o c e s s i n g , and a l l o c a t i o n region c a n d i d a t e s p e c i f y i n g
p r o c e s s i n g will be d e s c r i b e d .
The number of symbols of t h e d o w n l i n k p e r i o d
25 (DwPTS) w i t h t h e l e n g t h of the d o w n l i n k p e r i o d
(DwPTS)=6592Ts is 3 . Accordingly, the d o w n l i n k p e r i o d
20 MAR 2013
(DwPTS) corresponds to OFDM symbols #O to #2 ( t h a t i s , only
the PDCCH r e g i o n ) .
<2> The number of symbols of the d o w n l i n k p e r i o d
(DwPTS) w i t h t h e l e n g t h o f the downlink period
5 (DwPTS)=19760Ts is 9. Accordingly, the d o w n l i n k p e r i o d
(DwPTS) c o r r e s p o n d s to OFDM symbols #O to #8.
<3> The number o f symbols o f t h e d o w n l i n k p e r i o d
(DwPTS) with the length of the d o w n l i n k p e r i o d
(DwPTS)=21962Ts i s 1 0 . A c c o r d i n g l y , the d o w n l i n k p e r i o d
10 (DwPTS) c o r r e s p o n d s to OFDM symbols #O to #9.
<4> The number of symbols o f t h e d o w n l i n k p e r i o d
(DwPTS) w i t h the l e n g t h o f the downlink period
(DwPTS)=24144Ts is 1 1 . Accordingly, the d o w n l i n k p e r i o d
(DwPTS) c o r r e s p o n d s to OFDM symbols #O to # l o .
15 <5> T h e number o f symbols o f the d o w n l i n k p e r i o d
(DwPTS) with the length of t h e d o w n l i n k period
(DwPTS)=26336Ts is 12. Accordingly, t h e d o w n l i n k p e r i o d
(DwPTS) corresponds to OFDM symbols #O to #11.
( 2 ) When Extended CP is used i n t h e downlink:
2 0 <1> The number o f symbols o f t h e d o w n l i n k p e r i o d
(DwPTS) w i t h the length of the d o w n l i n k p e r i o d
(DwPTS)=7680Ts is 3 . Accordingly, t h e d o w n l i n k period
(DwPTS) c o r r e s p o n d s to OFDM symbols #O to #2 ( t h a t i s , o n l y
the PDCCH r e g i o n ) .
2 5 <2> The number o f symbols of the downlink period
(DwPTS) w i t h the length of the downlink period
2 0 MAR 2M3
(DwPTS)=20480Ts i s 8 . A c c o r d i n g l y , the d o w n l i n k p e r i o d
(DwPTS) corresponds to OFDM symbols #O to #7.
<3> The number o f symbols of the d o w n l i n k p e r i o d
(DwPTS) w i t h t h e length of the downlink period
5 (DwPTS)=20480Ts is 9. Accordingly, the d o w n l i n k p e r i o d
(DwPTS) corresponds to OFDM symbols #O to #8.
<4> The number o f symbols of the downlink period
(DwPTS) w i t h t h e l e n g t h of the downlink period
(DwPTS)=25600Ts is 10. Accordingly, the downlink period
10 (DwPTS) corresponds to OFDM symbols #O to #9.
OFDM symbols #3 to #13 or #3 to #12 are a l l o c a t e d to
the R-PDCCH r e g i o n w h i c h is designed for the relay s t a t i o n . In
r e g a r d t o the DL grant, the OFDM symbols #3 to #6 in the
R-PDCCH r e g i o n are a l l o c a t e d .
15 Accordingly, in t h i s embodiment, a c a s e where subframe
type d e t e r m i n i n g s e c t i o n 101 determines t h e s w i t c h i n g subframe
to be determined as t h e s e c o n d type subframe is limited t o a case
where OFDM symbols #3 to #6 are included in the downlink
period (DwPTS). That i s , i n t h e above-described e x a m p l e , when
20 Normal CP is used in t h e d o w n l i n k or when Extended CP is used
in the downlink, i n t h e c a s e , subframe type d e t e r m i n i n g
section 101 determines the switching subframe to be determined
as t h e f i r s t type subframe, not as the second t y p e subframe.
< A l l o c a t i o n R e g i o n C a n d i d a t e Deciding Processing by
25 Base Station 100>
In base s t a t i o n 1 0 0 , a l l o c a t i o n region candidate d e c i d i n g
2 0 MAR 20\3
section 102 decides an a l l o c a t i o n r e g i o n c a n d i d a t e ( t h a t i s ,
search space), to which the c o n t r o l i n f o r m a t i o n is mapped, i n the
PDCCH region or the R-PDCCH region in the subframe t o b e
determined on t h e b a s i s of t h e determination r e s u l t by subframe
5 type determining section 1 0 1 . T h a t i s , when it i s d e t e r m i n e d
t h a t t h e subframe to be d e t e r m i n e d i s the f i r s t t y p e s u b f r a m e ,
o n l y t h e PDCCH region is a region in which an a l l o c a t i o n r e g i o n
c a n d i d a t e c a n be s e t . M e a n w h i l e , when i t is determined t h a t the
subframe to be determined i s t h e second t y p e s u b f r a m e , both the
10 . PDCCH r e g i o n a n d the R-PDCCH region a r e r e g i o n s in which an
a l l o c a t i o n r e g i o n c a n d i d a t e can be s e t .

In terminal 200 of Embodiment 2, subframe type
d e t e r m i n i n g s e c t i o n 2 0 5 d e t e r m i n e s the type of the subframe to
be determined. Subframe type dstermin
b a s i c a l l y h a s the same f u n c t i o n as subframe
s e c t i o n 1 0 1 of base station 100.
ing section 205
t y p e d e t e r m i n i n g
According to t h i s embodiment d e s c r i b e d a b o v e , in base
s t a t i o n 1 0 0 w h i c h maps c o n t r o l i n f o r m a t i o n to one of a f i r s t
r e s o u r c e r e g i o n and a second r e s o u r c e region provided in order
in a t i m e d i r e c t i o n in a subframe and t r a n s m i t s the control
i n f o r m a t i o n , subframe t y p e d e t e r m i n i n g s e c t i o n 101 determines
y&
whether the subframe to be determined is the f i r s t type subframe
i n which t h e control i n f o r m a t i o n c a n b e mapped only t o t h e f i r s t
r e s o u r c e r e g i o n o r t h e s e c o n d t y p e subframe in which the control
i n f o r m a t i o n c a n be mapped to both the f i r s t r e s o u r c e r e g i o n and
t h e second r e s o u r c e r e g i o n in accordauce with a c o n f i g u r a t i o n
p a t t e r n w h i c h is a p p l i e d t o the base s t a t i o n and i s o n e of a
p l u r a l i t y of configuration p a t t e r n s having d i f f e r e n t d o w n l i n k
subframe a n d u p l i n k subframe c o n f i g u r a t i o n s in t i m e - d i v i s i o n
m u l t i p l e x . Allocation r e g i o n c a n d i d a t e d e c i d i n g s e c t i o n 1 0 2
decides a mapping r e g i o n , t o which the c o n t r o l i n f o r m a t i o n is
mapped, i n t h e first resource region o r t h e second resource
region in the subframe to be determined on t h e b a s i s of the
determination result by subframe type d e t e r m i n i n g s e c t i o n 1 0 1 .
S p e c i f i c a l l y , in Embodiment 2, the control information
2 0 MAR 2013
i s the uplink a l l o c a t i o n control information (UL g r a n t ) w h i c h
i n s t r u c t s a mapping region to which t h e u p l i n k data signal i s
mapped, and a p l u r a l i t y of downlink subframes i n e a c h
c o n f i g u r a t i o n p a t t e r n are a s s o c i a t e d w i t h u p l i n k s u b f r a m e s in
5 which the uplink d a t a s i g n a l corresponding to t h e u p l i n k
a l l o c a t i o n control information to be t r a n s m i t t e d in each
downlink subframe can be transmitted. When t h e i n t e r v a l
between a downlink subframe to be determined in which the
uplink a l l o c a t i o n control i n f o r m a t i o n i s t r a n s m i t t e d a n d a n
10 uplink subframe a s s o c i a t e d with the downlink subframe to be
d e t e r m i n e d i s e q u a l t o or greater than a p r e d e t e r m i n e d v a l u e ,
s c b f r a m e type determining section 1 0 1 d e t e r m i n e s t h e d o w n l i n k
subframe to be determined a s the second t y p e s u b f r a m e .
In this way, i t i s p o s s i b l e to s u f f i c i e n t l y secure the time
15 u n t i l u p l i n k d a t a f o r t h e uplink allocation c o n t r o l i n f o r m a t i o n
(UL g r a n t ) i s t r a n s m i t t e d a f t e r t h e uplink a l l o c a t i o n c o n t r o l
information (UL g r a n t ) is r e c e i v e d o n the reception side
( t e r m i n a l 200) of the uplink a l l o c a t i o n control information (UL
g r a n t ) .
2 0 A subframe number in which the R-PDCCH region i s not
used for t r a n s m i t t i n g a c o n t r o l s i g n a l i s s h a r e d in advance by
base s t a t i o n 100 a n d t e r m i n a l 200, thereby r e d u c i n g t h e number
of times of blind decoding b y t e r m i n a l 200.
If the same "transmission r u l e t a b l e " as in LTE is used,
25 the c o r r e s p o n d e n c e r e l a t i o n s h i p between a subframe in which the
UL grant i s t r a n s m i t t e d a n d a subframe in w h i c h u p l i n k d a t a f o r
2 0 MAR 2013
the UL g r a n t i s t r a n s m i t t e d h a s no c h a n g e f r o m LTE.
A c c o r d i n g l y , c h a n g e from scheduling in an LTE b a s e s t a t i o n and
an LTE t e r m i n a l can be minimized, the impact of the change on a
scheduler of base station 100 i s low, and the impact of t h e change
5 on t e r m i n a l 200 i s low.
[Other Embodiments]
(1) Although in each embodiment, a resource region which
i s used as a data r e s o u r c e r e g i o n in LTE and in which a c o n t r o l
signal is arranged in LTE-A i s called tbe R-PDCCH r e g i o n , this
10 r e s o u r c e region may be called an enhanced PDCCH region or
other names.
(2) Although in e a c h embodiment, a c a s e w h e r e t h e
l e a d i n g OFDM symbol of the R-PDCCH region in each subframe
is t h e f o u r t h OFDM symbol ( t h a t i s , the OFDM symbol #3), the
15 i n v e n t i o n is not limited t h e r e t o , and the value o f PCFICH ( a
signal for designating the number of symbols o f t h e PDCCH
region) may be n o t i f i e d from t h e b a s e s t a t i o n to the t e r m i n a l ,
thereby varying t h e s t a r t p o s i t i o n of the R-PDCCH region in each
ame. Altexnatiuely , with higher layer signaling, the
20 l e a d i n g OFDM symbol of the R-PDCCH region may be n o t i f i e d
from the base s t a t i o n t o t h e terminal.
(3) Although in each embodiment, a n a n t e n n a h a s been
d e s c r i b e d , the invention may also be applied t o a n antenna port.
The a n t e n n a p o r t r e f e r s to a l o g i c a l a n t e n n a h a v i n g one
25 or a p l u r a l i t y of p h y s i c a l a n t e n n a s . T h a t i s , the a n t e n n a p o r t is
not n e c e s s a r i l y l i m i t e d t o one physical antenna, and may refer to
an array a n t e n n a h a v i n g a p l u r a l i t y o f a n t e n n a s , or the l i k e .
: F o r e x a m p l e , in 3GPP LTE, the number of physical
antennas which c o n s t i t u t e an a n t e n n a p o r t is not defined, and
antenna port is defined as the minimum s e c t i o n in which the base
5 s t a t i o n can transmit a r e f e r e n c e s i g n a l .
An antenna port may be d e f i n e d a s the minimum section
of multiplying a weight of a precoding vector.
(4) Although in e a c h embodiment, a c a s e w h e r e the
invention i s c o n s t i t u t e d by hardware h a s b e e n d e s c r i b e d , t h e
10 invention may be realized by software in c o o p e r a t i o n with
hardware.
Each f u n c t i o n a l block used in the d e s c r i p t i o n of the
embodiments may be t y p i c a l l y implemented by an i n t e g r a t e d
c i r c u i t o r LSI ( L a r g e Scale I n t e g r a t i o n ) . T h e s e may be
15 i n d i v i d u a l c h i p s , o r a p a r t o r a l l of them may be included in a
s i n g l e chip. The term "LSI" may also be referred t o a s "IC",
"system LSI", "super LSI", or " u l t r a LSI" due to the d i f f e r e n c e in
i n t e g r a t i o n .
T h e method of c i r c u i t i n t e g r a t i o n i s not limited to LSI,
20 and c i r c u i t i n t e g r a t i o n may be implemented by dedicated c i r c u i t s
or general-purpose p r o c e s s o r s . A f t e r LSI manufacture, a
programmable FPGA ( F i e l d Programmable Gate A r r a y ) o r a
r e c o n f i g u r a b l e p r o c e s s o r in which connections o r s e t t i n g s of
c i r c u i t c e l l s i n L S I can be r e c o n f i g u r e d may be used.
2 5 With the advancement of semiconductor technology or
o t h e r d e r i v a t i v e technology, i f integrated c i r c u i t t e c h n o l o g y
2 0 MAR 2013
comes o u t to r e p l a c e LSI, i n t e g r a t i o n of functional blocks may be
of c o u r s e c a r r i e d o u t u s i n g t h i s techllology. Application of
b i o t e c h n o l o g y or the l i k e is also p o s s i b l e .
The d i s c l o s u r e s of t h e s p e c i f i c a t i o n , t h e d r a w i n g s , and
5 t h e a b s t r a c t included in J a p a n e s e P a t e n t A p p l i c a t i o n No.
201 0-22871 3, f i l e d October 8, 201 0 are all incorporated herein.
I n d u s t r i a l A p p l i c a b i l i t y
The base s t a t i o n , the terniinal, the
10 apparatus, and the t r a n s m i s s i o n method of the
useful as allowing d a t a p r o c e s s i n g on a r e c e p t i o n
transmission
invention are
s i d e t o have a
margin r e g a r d l e s s of the time p o s i t i o n o f a r e s o u r c e r e g i o n t o
which c o n t r o l i n f o r m a t i o n i s mapped.
15 Reference Signs List
100 B a s e s t a t i o n
101, 205 Subframe type d e t e r m i n i n g s e c t i o n
102 A l l o c a t i o n r e g i o n c a n d i d a t e deciding section
20 103 Control s i g n a l a l l o c a t i n g s e c t i o n '
1 0 4 , 208 Error c o r r e c t i o n e n c o d i n g section
105, 2 0 9 M o d u l a t i n g s e c t i o n
106 S i g n a l a l l o c a t i n g s e c t i o n
107, 2 11 R a d i o t r a n s m i t t i n g section
25 108, 2 0 1 R a d i o r e c e i v i n g section
1 0 9 , 203 Demodulating section
2 0 MAR 2013
110, 2 0 4 E r r o r c o r r e c t i o n decoding section
200 Terminal
202 S i g n a l s e p a r a t i n g s e c t i o n
206 A l l o c a t i o n r e g i o n c a n d i d a t e s p e c i f y i n g section
5 207 Downlink c o n t r o l signal r e c e i v i n g section
210 S i g n a l a l l o c a t i n g section
2 0 MAR 2013
We Claim :
Claim 1 A b a s e s t a t i o n w h i c h maps control information to
one o f a f i r s t r e s o u r c e r e g i o n a n d a second r e s o u r c e region
provided in order in a time d i r e c t i o n in a subframe and transmits
5 t h e c o n t r o l i n f o r m a t i o n , the b a s e s t a t i o n comprising:
determining s e c t i o n that d e t e r m i n e s whether a subframe to
be determined is a f i r s t type subframe in which the control
information is mapped only to the f i r s t r e s o u r c e r e g i o n o r a
second type subframe in which the control information is mapped
10 to both the f i r s t r e s o u r c e region and the second resource region
in accordance with a c o n f i g u r a t i o n p a t t e r n which is a p p l i e d t o
the b a s e s t a t i o n a n d i s one of a p l u r a l i t y of c o n f i g u r a t i o n
p a t t e r n s h a v i n g d i f f e r e n t downlink a n d uplink subframe
c o n f i g u r a t i o n s in t i m e - d i v i s i o n m u l t i p l e x ; a n d
15 deciding s e c t i o n t h a t d e c i d e s a mapping r e g i o n , to which
the c o n t r o l i n f o r m a t i o n i s mapped, in the f i r s t r e s o u r c e region or
the s e c o n d r e s o u r c e r e g i o n i n t h e subframe to be determined o n
the basis of the d e t e r m i n a t i o n r e s u l t b y t h e determining section.
Claim 2 The base s t a t i o n a c c o r d i n g t o c l a i m 1, wherein:
the control i n f o r m a t i o n i s downlink a l l o c a t i o n control
i n f o r m a t i o n w h i c h i n s t r u c t s a mapping r e g i o n to which a
downlink d a t a signal is mapped;
a p l u r a l i t y of d o w n l i n k s u b f r a m e s in each c o n f i g u r a t i o n
pattern a r e a s s o c i a t e d with uplink
retransmission c o n t r o l s i g n a l r e l a t i n g
subframes in which
to the downlink data
s i g n a l corresponding to the d o w n l i n k a l l o c a t i o n c o n t r o l
information to be t r a n s m i t t e d in each downlink subframe i s
t r a n s m i t t e d ; and
when an i n t e r v a l b e t w e e n a downlink subframe to be
5 determined in which downlink a l l o c a t i o n control information is
t r a n s m i t t e d and an uplink subframe a s s o c i a t e d w i t h the downlink
subframe to be determined is equal to or greater than a
predetermined value, the d e t e r m i n i n g section determines the
downlink subframe to be determined as the second type subframe.
10
Claim 3 The base s t a t i o n a c c o r d i n g t o c l a i m 1, wherein:
the configuration p a t t e r n i n c l u d e s s w i t c h i n g s u b f r a m e s in
addition to the downlink subframes and the uplink subframes,
and each switching subframe i n c l u d e s a downlink p e r i o d , a n
15 uplink period, and a guard p e r i o d which is not used in both the
downlink p e r i o d a n d the u p l i n k p e r i o d ;
the switching subframes in the c o n f i g u r a t i o n p a t t e r n are
a s s o c i a t e d w i t h u p l i n k subframes in which a r e t r a n s m i s s i o n
c o n t r o l signal r e l a t i n g t o a downlink d a t a s i g n a l corresponding
20 to d o w n l i n k a l l o c a t i o n c o n t r o l i n f o r m a t i o n to be t r a n s m i t t e d i n
the downlink period of each s w i t c h i n g subframe is t r a n s m i t t e d ;
and
when an i n t e r v a l b e t w e e n a switching subframe to be
determined and an uplink subframe a s s o c i a t e d with the switching
25 subframe to be determined is equal to or g r e a t e r than a
predetermined value, the d e t e r m i n i n g s e c t i o n d e t e r m i n e s the
20 MAR 20\3
switching subframe to be determined as t h e s e c o n d t y p e
subframe.
Claim 4 The base s t a t i o n according to c l a i m 1 , w h e r e i n :
5 the c o n t r o l i n f o r m a t i o n is u p l i n k a l l o c a t i o n control
i n f o r m a t i o n w h i c h i n s t r u c t s a mapping region to which a n u p l i n k
data s i g n a l is mapped;
a p l u r a l i t y of d o w n l i n k s u b f r a m e s in e a c h c o n f i g u r a t i o n
p a t t e r n are a s s o c i a t e d with uplink subframes in which the uplink
10 data s i g n a l corresponding to the u p l i n k a l l o c a t i o n control
information to be t r a n s m i t t e d in e a c h d o w n l i n k subframe is
t r a n s m i t t e d ; and
when a n i n t e r v a l b e t w e e n a downlink subframe to be
determined in which the u p l i n k a l l o c a t i o n control information is
15 t r a n s m i t t e d a n d an uplink subframe a s s o c i a t e d with the downlink
subframe to be determined is equal to or g r e a t e r than a
predetermined value, the d e t e r m i n i n g s e c t i o n d e t e r m i n e s the
downlink subframe to be determined as the second type subframe.
20 Claim 5 The base s t a t i o n according to claim 1, wherein:
t h e c o n f i g u r a t i o n p a t t e r n i n c l u d e s s w i t c h i n g s u b f r a m e s in
a d d i t i o n t o the downlink subframes and the u p l i n k s u b f r a m e s ,
and each switching subframe includes a d o w n l i n k p e r i o d , an
uplink period, and a g u a r d p e r i o d which i s not used in both the
25 downlink period and the uplink period;
the s w i t c h i n g s u b f r a m e s in e a c h c o n f i g u r a t i o n p a t t e r n a r e
2 0 MAR 2013
a s s o c i a t e d w i t h u p l i n k subframes in which an u p l i n k d a t a s i g n a l
c o r r e s p o n d i n g to uplink a l l o c a t i o n c o n t r o l information t o b e
t r a n s m i t t e d in the downlink period of each switching subframe is
t r a n s m i t t e d ; and
when a n i n t e r v a l between a s w i t c h i n g subframe to be
determined and an uplink subframe a s s o c i a t e d w i t h t h e s w i t c h i n g
I
subframe to be determined is equal to or greater than a
predetermined value, t h e d e t e r m i n i n g s e c t i o n determines the
s w i t c h i n g subframe to be determined as the second type
subframe.
Claim 6 The base station according to claim 3 , wherein:
only when a l e n g t h of the downlink period of the s w i t c h i n g
subframe to be determined is g r e a t e r t h a n a predetermined value,
t h e d e t e r m i n i n g section determines the s w i t c h i n g subframe to be
determined as the second type subframe.
Claim 7 A terminal which r e c e i v e s c o n t r o l i n f o r m a t i o n in
one of a f i r s t r e s o u r c e r e g i o n a n d a s e c o n d r e s o u r c e region
provided in order in a t i m e d i r e c t i o n in a subframe, the terminal
comprising:
determining s e c t i o n t h a t d e t e r m i n e s w h e t h e r a subframe to
be determined is a first type subframe in w h i c h t h e c o n t r o l
i n f o r m a t i o n i s mapped only to the f i r s t r e s o u r c e region or a
s e c o n d t y p e subframe i n which the c o n t r o l i n f o r m a t i o n i s mapped
to both the f i r s t resource region and the s e c o n d r e s o u r c e r e g i o n
2 '9 MAR 2013
in a c c o r d a n c e w i t h a c o n f i g u r a t i o n p a t t e r n w h i c h i s applied to
t h e t e r m i n a l and is one o f a p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s
h a v i n g d i f f e r e n t d o w n l i n k a n d u p l i n k subframe c o n f i g u r a t i o n s in
time-division m u l t i p l e x ; and
5 s p e c i f y i n g s e c t i o n t h a t s p e c i f i e s a mapping region
candidate, to which the control information is mapped, in the
f i r s t resource region or the second resource r e g i o n i n the
subframe to be determined on the basis of the determination
r e s u l t by the d e t e r m i n i n g s e c t i o n .
10
Claim 8 T h e t e r m i n a l a c c o r d i n g to claim 7, wherein:
the control i n f o r m a t i o n i s downlink a l l o c a t i o n c o n t r o l
information which i n s t r u c t s a mapping r e g i o n to which a
d o w n l i n k d a t a signal is mapped;
15 a p l u r a l i t y of d o w n l i n k s u b f r a m e s in e a c h c o n f i g u r a t i o n
p a t t e r n are a s s o c i a t e d with u p l i n k s u b f r a m e s in which
r e t r a n s m i s s i o n c o n t r o l s i g n a l r e l a t i n g to t h e d o w n l i n k data
signal corresponding to the downlink a l l o c a t i o n control
information to be transmitted in each downlink subframe is
20 t r a n s m i t t e d ; and
when t h e i n t e r v a l between a downlink subframe to be
determined i n which d o w n l i n k a l l o c a t i o n c o n t r o l i n f o r m a t i o n i s
t r a n s m i t t e d and an uplink subframe a s s o c i a t e d with t h e downlink
subframe to be determined i s e q u a l to or g r e a t e r t h a n a
25 predetermined value, the d e t e r m i n i n g s e c t i o n d e t e r m i n e s the
downlink subframe to be determined as the second type subframe.
2 0 MAR 2013
Claim 9 The terminal according t o c l a i m 7, wherein:
t h e c o n f i g u r a t i o n p a t t e r n i n c l u d e s s w i t c h i n g s u b f r a m e s i n
addition to the downlink subframes and the u p l i n k s u b f r a m e s ,
5 and each switching subframe includes a d o w n l i n k p e r i o d , an
uplink period, a n d a guard period which is not used in both the
downlink period and the uplink period;
t h e s w i t c h i n g s u b f r a m e s in t h e c o n f i g u r a t i o n p a t t e r n a r e
a s s o c i a t e d w i t h uplink subframes in which a r e t r a n s m i s s i o n
10 c o n t r o l s i g n a l r e l a t i n g t o a d o w n l i n k d a t a s i g n e l corresponding
to d o w n l i n k a l l o c a t i o n control information to be t r a n s m i t t e d in
the downlink p e r i o d o f e a c h switching subframe is t r a n s m i t t e d ;
and
when a n i n t e r v a l between a switching subframe to be
1 5 determined and an uplink subframe a s s o c i a t e d with t h e s w i t c h i n g
subframe to be determined is equal to or g r e a t e r than a
p r e d e t e r m i n e d value, t h e d e t e r m i n i n g s e c t i o n d e t e r m i n e s t h e
s w i t c h i n g subframe to be determined as the s e c o n d t y p e
subframe.
2 0
Claim 10 The t e r m i n a l a c c o r d i n g t o c l a i m 7, wherein:
t h e c o n t r o l i n f o r m a t i o n i s u p l i n k a l l o c a t i o n c o n t r o l
i n f o r m a t i o n which i n s t r u c t s a mapping region to which a n uplink
data signal is mapped;
2 5 a p l u r a l i t y o f downlink subframes in e a c h c o n f i g u r a t i o n
p a t t e r n are a s s o c i a t e d with uplink subframes in which the uplink
2 0 MAR 2013
data s i g n a l c o r r e s p o n d i n g to the uplink a l l o c a t i o n c o n t r o l
information to be t r a n s m i t t e d in each downlink subframe is
t r a n s m i t t e d ; and
when an i n t e r v a l b e t w e e n a downlink subframe to be
5 determined in which the u p l i n k a l l o c a t i o n control information is
t r a n s m i t t e d a n d a n uplink subframe a s s o c i a t e d w i t h the downlink
subframe to be determined i s e q u a l to o r g r e a t e r than a
predetermined value, the determining section d e t e r m i n e s t h e
downlink subframe to be determined as the second type subframe.
10
Claim 11 T h e t e r m i n a l a c c o r d i n g to claim 7, wherein:
t h e c o n f i g u r a t i o n p a t t e r n i n c l u d e s switching subframes in
addition to the d o w n l i n k s u b f r a m e s and the u p l i n k s u b f r a m e s ,
and e a c h s w i t c h i n g subframe includes a downlink period, an
15 u p l i n k p e r i o d , a n d a g u a r d period which is not used in both the
downlink p e r i o d a n d the uplink p e r i o d ;
t h e s w i t c h i n g s u b f r a m e s i n e a c h c o n f i g u r a t i o n p a t t e r n are
a s s o c i a t e d w i t h u p l i n k s u b f r a m e s in which a n u p l i n k d a t a s i g n a l
corresponding to u p l i n k a l l o c a t i o n control information to be
20 t r a n s m i t t e d i n t h e downlink period of each switching subframe is
t r a n s m i t t e d ; and
when an i n t e r v a l between a switching subframe to be
determined and an uplink subframe a s s o c i a t e d w i t h the switching
subframe to be determined is equal to or g r e a t e r than a
25 predetermined value, the determining section determines the
switching subframe to be determined as t h e s e c o n d type
2 0 MAR 2013
subframe.
Claim 12 The terminal according to claim 9, wher.ein:
only when a length of t h e downlink p e r i o d o f the s w i t c h i n g
subframe to be determined i s greater than a predetermined v a l u e ,
the d e t e r m i n i n g s e c t i o n d e t e r m i n e s the switching subframe to be
detefmined as the second type subframe.
Claim 13 A t r a n s m i s s i o n method which maps control
information to one of a f i r s t r e s o u r c e r e g i o n and a second
r e s o u r c e r e g i o n provided in order in a t i m e d i r e c t i o n in a
subframe a n d t r a n s m i t s the control information, the transmission
method c o m p r i s i n g t h e steps o f :
d e t e r m i n i n g whether a subframe to be determined is a f i r s t
type subframe in which the c o n t r o l i n f o r m a t i o n is mapped only to
the f i r s t r e s o u r c e region or a second type subframe in which the
control i n f o r m a t i o n i s mapped t o b o t h the f i r s t r e s o u r c e r e g i o n
and the s e c o n d r e s o u r c e region in accordance with a
c o n f i g u r a t i o n p a t t e r n w h i c h i s applied to the base s t a t i o n and i s
one of a p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s h a v i n g d i f f e r e n t
downlink and uplink subframe c o n f i g u r a t i o n s in t i m e - d i v i s i o n
multiplex; and
d e c i d i n g a mapping r e g i o n , to which the control
information is mapped, in the f i r s t resource region or the second
resource region i n t h e subframe
the result of the determination.
to be determined on the b a s i s of
Claim 14 A reception method which r e c e i v e s c o n t r o l
i n f o r m a t i o n in o n e o f a f i r s t r e s o u r c e r e g i o n a n d a second
r e s o u r c e region provided i n o r d e r i n a time direction in a
5 s u b f r a m e , t h e r e c e p t i o n method comprising the steps of:
determining whether a subframe to be determined is a f i r s t
type subframe in which t h e c o n t r o l i n f o r m a t i o n is mapped only to
the f i r s t resource region or a s e c o n d t y p e subframe in which the
c o n t r o l information is mapped to both the f i r s t resource region
10 and the second r e s o u r c e r e g i o n i n accordance w i t h a
c o n f i g u r a t i o n p a t t e r n which is a p p l i e d to t h e b a s e s t a t i o n a n d i s
one of a p l u r a l i t y of c o n f i g u r a t i o n p a t t e r n s h a v i n g d i f f e r e n t
downlink a n d u p l i n k subframe c o n f i g u r a t i o n s in time-division
m u l t i p l e x ; and
15 specifying a mapping region c a n d i d a t e , t o which the
c o n t r o l i n f o r m a t i o n i s mapped, in the f i r s t resource region or t h e
s e c o n d r e s o u r c e region in the subframe to be determined on t h e
b a s i s of the r e s u l t of t h e d e t e r m i n a t i o n .