Physical downlink control channel, PDCCH, assignment procedure
First Claim
1. A mobile station for receiving Physical Downlink Control CHannel (PDCCH) assignments in a mobile communication system, the mobile station to be configured with at least two serving cells among a plurality of serving cells, the at least two serving cells having different serving cell indices, the mobile station comprising:
- at least one processor, andat least one memory device storing at least one program that, when executed by the at least one processor, causes the mobile station to;
monitor a same set of candidates for PDCCH assignments defining a same search space which is specific to the mobile station and which is determined independently of the indices of the at least two serving cells with which the mobile station is to be configured, andreceive, for the at least two serving cells, the PDCCH assignments from among the monitored same set of candidates using carrier indicator field (CIF) values in the received PDCCH assignments for identifying the at least two serving cells with which the mobile station is to be configured,wherein the CIF values, included in the received PDCCH assignments, correspond to the respective indices of the at least two serving cells with which the mobile station is to be configured,wherein the mobile station receives at least one radio resource control (RRC) reconfiguration message in response to the mobile station being configured with the at least two serving cells among the plurality of serving cells,wherein the at least one RRC reconfiguration message received by the mobile station includes a same carrier indicator field value (nCI) for independently determining the same search space for the at least two serving cells,wherein the same search space S(L)k for the at least two serving cells is determined using the same nCI value, applying the formula;
Sk(L)=L{(Yk+m′
)mod └
NCCE,k/L┘
}+i wherein an aggregation level L is defined as L∈
{1, 2, 4, 8}, wherein i=0, . . . , L−
1, wherein Yk is defined as Yk=(A·
Yk-1)mod D, wherein for the search space specific to the mobile station m′
=m+M(L)·
nCI, where nCI is included in the received RRC reconfiguration message, andwherein M(L) is the number of the set of candidates of PDCCH assignments to monitor in the given search space, wherein NCEE,k is the total number of CCEs in the control region of subframe k, and wherein Y−
1=nRNTI≠
0, A=39827, D=65537, k=└
ns/2┘
, and ns is the slot number within a radio frame.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure relates to a mobile station (UE) for receiving Physical Downlink Control CHannel, PDCCH, assignments in a mobile communication system including serving cells. In case the mobile station is configured with at least two serving cells having different serving cell indices, the UE monitors, for the two serving cells, a same set of candidates for PDCCH assignments defining a same UE-specific search space and which is determined independently of the indices of the serving cells with which the UE is configured, and the UE receives, for the serving cells, PDCCH assignments from among the monitored same set of candidates using carrier indicator field, CIF, values in the received PDCCH assignments for identifying the serving cells with which the UE is configured. The CIF values, included in the received PDCCH assignments, correspond to the respective indices of the serving cells with which the UE is configured.
15 Citations
9 Claims
-
1. A mobile station for receiving Physical Downlink Control CHannel (PDCCH) assignments in a mobile communication system, the mobile station to be configured with at least two serving cells among a plurality of serving cells, the at least two serving cells having different serving cell indices, the mobile station comprising:
-
at least one processor, and at least one memory device storing at least one program that, when executed by the at least one processor, causes the mobile station to; monitor a same set of candidates for PDCCH assignments defining a same search space which is specific to the mobile station and which is determined independently of the indices of the at least two serving cells with which the mobile station is to be configured, and receive, for the at least two serving cells, the PDCCH assignments from among the monitored same set of candidates using carrier indicator field (CIF) values in the received PDCCH assignments for identifying the at least two serving cells with which the mobile station is to be configured, wherein the CIF values, included in the received PDCCH assignments, correspond to the respective indices of the at least two serving cells with which the mobile station is to be configured, wherein the mobile station receives at least one radio resource control (RRC) reconfiguration message in response to the mobile station being configured with the at least two serving cells among the plurality of serving cells, wherein the at least one RRC reconfiguration message received by the mobile station includes a same carrier indicator field value (nCI) for independently determining the same search space for the at least two serving cells, wherein the same search space S(L)k for the at least two serving cells is determined using the same nCI value, applying the formula;
Sk(L)=L{(Yk+m′
)mod └
NCCE,k/L┘
}+iwherein an aggregation level L is defined as L∈
{1, 2, 4, 8}, wherein i=0, . . . , L−
1, wherein Yk is defined as Yk=(A·
Yk-1)mod D, wherein for the search space specific to the mobile station m′
=m+M(L)·
nCI, where nCI is included in the received RRC reconfiguration message, andwherein M(L) is the number of the set of candidates of PDCCH assignments to monitor in the given search space, wherein NCEE,k is the total number of CCEs in the control region of subframe k, and wherein Y−
1=nRNTI≠
0, A=39827, D=65537, k=└
ns/2┘
, and ns is the slot number within a radio frame. - View Dependent Claims (2)
-
-
3. A mobile station for receiving Physical Downlink Control CHannel (PDCCH) assignments in a mobile communication system, the mobile station to be configured with at least two serving cells among a plurality of serving cells, the at least two serving cells having different serving cell indices, the mobile station comprising:
-
at least one processor, and at least one memory device storing at least one program that, when executed by the at least one processor, causes the mobile station to; monitor a same set of candidates for PDCCH assignments defining a same search space which is specific to the mobile station and which is determined according to the same index of the at least two serving cells with which the mobile station is to be configured, and receive, for the at least two serving cells, PDCCH assignments from among the monitored same set of candidates which identify the at least two serving cells, with which the mobile station is to be configured, independently of carrier indicator field (CIF) value in the received PDCCH assignments, wherein the CIF value, included in the received PDCCH assignments, corresponds to the respective index of the at least two serving cells with which the mobile station is to be configured, wherein the mobile station receives at least one radio resource control (RRC) reconfiguration message in response to the mobile station being configured with the at least two serving cells among the plurality of serving cells, wherein the at least one RRC reconfiguration message received by the mobile station includes a same carrier indicator field value (nCI) for determining the same search space for the at least two serving cells according to the same index of the at least two serving cells included in the RRC reconfiguration message, wherein the same search space S(L)k for the at least two serving cells is determined using the same nCI value, applying the formula;
Sk(L)=L{(Yk+m′
)mod └
NCCE,k/L┘
}+iwherein an aggregation level L is defined as L∈
{1, 2, 4, 8}, wherein i=0, . . . , L−
1, wherein Yk is defined as Yk=(A·
Yk-1)mod D, wherein for the search space specific to the mobile station m′
=m+M(L)·
nCI, where nCI is included in the received RRC reconfiguration message, andwherein M(L) is the number of the set of candidates of PDCCH assignments to monitor in the given search space, wherein NCEE,k is the total number of CCEs in the control region of subframe k, and wherein Y−
1=nRNTI≠
0, A=39827, D=65537, k=└
ns/2┘
, and ns is the slot number within a radio frame. - View Dependent Claims (4, 5, 6)
-
-
7. A method for receiving Physical Downlink Control CHannel (PDCCH) assignments in a mobile communication system including a plurality of serving cells, the mobile station to be configured with at least two serving cells among a plurality of serving cells, the at least two serving cells having different serving cell indices, the mobile station, the method comprising:
-
monitoring, by the mobile station, for the at least two serving cells, a same set of candidates for PDCCH assignments defining a same search space which is specific to the mobile station and which is determined independently of the indices of the at least two serving cells with which the mobile station is configured; receiving, by the mobile station, for the at least two serving cells, PDCCH assignments from among the monitored same set of candidates using carrier indicator field (CIF) values in the received PDCCH assignments for identifying the at least two serving cells with which the mobile station is to be configured; and receiving, by the mobile station, at least one radio resource control (RRC) reconfiguration message in response to the mobile station being configured with the at least two serving cells among the plurality of serving cells, wherein the CIF values, included in the received PDCCH assignments, correspond to the respective indices of the at least two serving cells with which the mobile station is to be configured, wherein the at least one RRC reconfiguration message received by the mobile station includes a same carrier indicator field value (nCI) for independently determining the same search space for the at least two serving cells, wherein the same search space S(L)k for the at least two serving cells is determined using the same nCI value, applying the formula;
Sk(L)=L{(Yk+m′
)mod └
NCCE,k/L┘
}+iwherein an aggregation level L is defined as L∈
{1, 2, 4, 8}, wherein i=0, . . . , L−
1, wherein Yk is defined as Yk=(A−
Yk-1)mod D, wherein for the search space specific to the mobile station m′
=m+M(L)·
nCI, where nCI is included in the received RRC reconfiguration message, andwherein M(L) is the number of the set of candidates of PDCCH assignments to monitor in the given search space, wherein NCEE,k is the total number of CCEs in the control region of subframe k, and wherein Y−
1=nRNTI≠
0, A=39827, D=65537, k=└
ns/2┘
, and ns is the slot number within a radio frame. - View Dependent Claims (8)
-
-
9. A method for receiving Physical Downlink Control CHannel (PDCCH) assignments in a mobile communication system including a plurality of serving cells, the mobile station to be configured with at least two serving cells among a plurality of serving cells, the at least two serving cells having different serving cell indices, the mobile station, the method comprising:
-
monitoring, by the mobile station, for the at least two serving cells, a same set of candidates for PDCCH assignments defining a same search space which is specific to the mobile station and which is determined according to the same index of the at least two serving cells with which the mobile station is to be configured; receiving, by the mobile station, for the at least two serving cells, PDCCH assignments from among the monitored same set of candidates which identify the at least two serving cells, with which the mobile station is to be configured, independently of carrier indicator field (CIF) value in the received PDCCH assignments; and receiving, by the mobile station, at least one radio resource control (RRC) reconfiguration message in response to the mobile station being configured with the at least two serving cells among the plurality of serving cells, wherein the CIF value, included in the received PDCCH assignments, corresponds to the respective index of the at least two serving cells with which the mobile station is to be configured, wherein the at least one RRC reconfiguration message received by the mobile station includes a same carrier indicator field value (nCI) for independently determining the same search space for the at least two serving cells, wherein the same search space S(L)k for the at least two serving cells is determined using the same nCI value, applying the formula;
Sk(L)=L{(Yk+m′
)mod └
NCCE,k/L┘
}+iwherein an aggregation level L is defined as L∈
{1, 2, 4, 8}, wherein i=0, . . . , L−
1, wherein Yk is defined as Yk=(A−
Yk-1)mod D, wherein for the search space specific to the mobile station m′
=m+M(L)·
nCI, where nCI is included in the received RRC reconfiguration message, andwherein M(L) is the number of the set of candidates of PDCCH assignments to monitor in the given search space, wherein NCEE,k is the total number of CCEs in the control region of subframe k, and wherein Y−
1=nRNTI≠
0, A=39827, D=65537, k=└
ns/2┘
, and ns is the slot number within a radio frame.
-
Specification