# US 2014/0153524 A1 · Method for resource assignment, base station and terminal equipment

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- Number: US 2014/0153524 A1
- Document ID: US20140153524A1
- Status: Published application
- Kind: A1
- Application number: 14/175,558
- Filed: 2014-02-07
- Published: 2014-06-05
- Earliest claimed: 2011-08-16
- Assignees: Fujitsu Limited
- Applicants: Fujitsu Limited
- Inventors: Haibo XU; Yanling LU; Yuantao ZHANG; Yi WANG
- Web page: https://patentgrep.com/patent/US20140153524A1

## CPC

- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L 5/0076: {Allocation utility-based}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 24/02: Arrangements for optimising operational condition
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04W 72/04: Wireless resource allocation
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A method for resource assignment, base station and terminal equipment. The method includes: determining resource block group sizes or numbers of resource block subsets to which a stand-alone carrier and a carrier segment correspond; and assigning a resource to terminal equipment according to the resource block group sizes or the numbers of the resource block subsets. With this method, waste of RBs in the resource assignment type 0 may be avoided on the one hand, and on the other hand, a solution for resource assignment of the resource assignment type 1 is provided.

## Claims

### Claim 1

A method for resource assignment, comprising:
determining resource block group sizes or numbers of resource block subsets to which a stand-alone carrier and a carrier segment correspond, according to the bandwidth of the stand-alone carrier or the bandwidths of the stand-alone carrier and the carrier segment and corresponding relationship between a bandwidth and a resource block group size; and
assigning a resource to terminal equipment according to the resource block group sizes or the numbers of the resource block subsets.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the method further comprises:
encoding indication information including a resource assignment result in a predetermined indication information format; and
informing the encoded indication information to the terminal equipment.

### Claim 3 (depends on 2)

The method according to claim 2, wherein when determining the resource block group sizes or the numbers of the resource block subsets to which the stand-alone carrier and the carrier segment correspond according to the bandwidth of the stand-alone carrier and the carrier segment and corresponding relationship between a bandwidth and a resource block group size, the predetermined indication information format is a first indication information format respectively indicating resource assignment result of the stand-alone carrier and resource assignment result of the carrier segment.

### Claim 4 (depends on 3)

The method according to claim 3, wherein when the first indication information format is used, a resource assignment type is resource assignment type 0, the number of the carrier segment is 1 or more, and the indication information includes the resource assignment type, information on whether each resource block group of 1 or more stand-alone carriers is assigned to the terminal equipment and information on whether each resource block group of the carrier segment is assigned to the terminal equipment;
and wherein the number of the resource assignment type is 1 or more, and the resource assignment types are identical or different.

### Claim 5 (depends on 3)

The method according to claim 3, wherein when the first indication information format is used, the type of the resource assignment is resource assignment type 1, and the indication information includes a resource assignment type, identification of a resource block subset of the stand-alone carrier and a resource block subset of the carrier segment, indication identification of the bit for resource assignment starting from the left side or the right side of a resource block subset, information on whether a corresponding resource block in the resource block subset of the stand-alone carrier is assigned to the terminal equipment and information on whether a corresponding resource block in the resource block subset of the carrier segment is assigned to the terminal equipment.

### Claim 6 (depends on 5)

The method according to claim 5, wherein the indication identification of the bit for resource assignment starting from the left side or the right side of the resource block subset comprises indication identification of the bit for resource assignment of the stand-alone carrier starting from the left side or the right side of the resource block subset and indication identification of the bit for resource assignment of the carrier segment starting from the left side or the right side of the resource block subset.

### Claim 7 (depends on 5)

The method according to claim 5, wherein,
the information on whether a corresponding resource block in the resource block subset of the stand-alone carrier is assigned to the terminal equipment and the information on whether a corresponding resource block in the resource block subset of the carrier segment is assigned to the terminal equipment are expressed in a manner of bit mapping of resource assignment;
the number of the carrier segment is n, and when the indication information of the resource assignment type 0 includes 1 resource assignment type, information on whether each resource block group of the stand-alone carrier is assigned to the terminal equipment and information on whether each resource block group of the carrier segment is assigned to the terminal equipment, the numbers of bit for bit mapping of resource assignment of the stand-alone carrier and n carrier segment are calculated by using the following formulae:
┌NRBDL/P┐−┌ log2(P)┐ and ┌NRBkDL/Pk┐−┌ log2(Pk)┐−1
wherein when the number of bit for bit mapping of resource assignment of a carrier k is ┌NRBkDL/Pk┐−┌ log2(Pk)┐−1, the number of bit for bit mapping of resource assignment of the rest carrier is ┌NRBDL/P┐−┌ log2(P)┐;
where, the carrier k is one of the stand-alone carrier and n carrier segment, Nk is the bandwidth of the carrier k, Pk is the resource block group size or the number of the resource block subset of the carrier k, NRBDL is the bandwidth of the rest carrier, P is the resource block group size or the number of the resource block subset of the rest carrier, and n is a positive integer.

### Claim 8 (depends on 5)

The method according to claim 5, wherein the information on whether a corresponding resource block in the resource block subset of the stand-alone carrier is assigned to the terminal equipment and the information on whether a corresponding resource block in the resource block subset of the carrier segment is assigned to the terminal equipment are expressed in a manner of bit mapping of resource assignment;
the number of the carrier segment is n, and when the indication information of the resource assignment type 0 includes a first resource assignment type and information on whether each resource block group of the stand-alone carrier is assigned to the terminal equipment as well as n second resource assignment type and information on whether each resource block group of corresponding n carrier segment is assigned to the terminal equipment, the values of the number of bit for bit mapping of resource assignment of the stand-alone carrier and n carrier segment are taken by using the following formula:
┌NRBDL/P┐−┌ log2(P)┐;
where, NRBDL is the bandwidth of the corresponding carrier, and P is the resource block group size or the number of the resource block subset of the corresponding carrier.

### Claim 9 (depends on 2)

The method according to claim 2, wherein when determining the resource block group sizes to which the stand-alone carrier and the carrier segment correspond, or the numbers of the resource block subsets, to which the stand-alone carrier and the carrier segment correspond according to the bandwidth of the stand-alone carrier and corresponding relationship between a bandwidth and a resource block group size, the predetermined indication information format is a second indication information format integrally indicating the resource assignment result of the stand-alone carrier and the resource assignment result of the carrier segment.

### Claim 10 (depends on 9)

The method according to claim 9, wherein when the second indication information format is used, a resource assignment type is resource assignment type 0, and the indication information includes the resource assignment type, information on whether each resource block group of the stand-alone carrier and the carrier segment as a whole is assigned to the terminal equipment.

### Claim 11 (depends on 10)

The method according to claim 10, wherein the information on whether each resource block group of the stand-alone carrier and the carrier segment as a whole is assigned to the terminal equipment is expressed in a manner of bit mapping of resource assignment;
the number of the carrier segment is n, and the number of bit is:
⌈
(
N
RB


1
DL
+
∑
i
=
1
n

N
RBi
DL
)
/
P
1
⌉
;
where, NRB1DL is the bandwidth of the stand-alone carrier, NDRBiDL is the bandwidth of the i-th carrier segment, and P1 is the resource block group size or the number of the resource block subset determined according to the stand-alone carrier, where, i is an integer from 1 to n, and n is a positive integer.

### Claim 12 (depends on 9)

The method according to claim 9, wherein when the second indication information format is used, a resource assignment type is resource assignment type 1, and the indication information includes the resource assignment type, selected identification of the resource block subset, indication identification of the bit for resource assignment starting from the left side or the right side of the resource block subset, and information on whether a corresponding resource block in the resource block subset of the stand-alone carrier and the carrier segment as a whole is assigned to the terminal equipment.

### Claim 13 (depends on 12)

The method according to claim 12, wherein the information on whether each resource block subset of the stand-alone carrier and the carrier segment as a whole is assigned to the terminal equipment is expressed in a manner of bit mapping of resource assignment;
the number of the carrier segment is n, and the number of bit is:
⌈
(
N
RB


1
DL
+
∑
i
=
1
n

N
RBi
DL
)
/
P
1
⌉
-
⌈
log
2

P
1
⌉
-
1
;
where, NRB1DL is the bandwidth of the stand-alone carrier, NRBiDL is the bandwidth of the i-th carrier segment, and P1 is the resource block group size or the number of the resource block subset determined according to the stand-alone carrier, where, i is an integer from 1 to n, and n is a positive integer.

### Claim 14

A base station, comprising:
a first determining unit configured to determine resource block group sizes or numbers of resource block subsets to which a stand-alone carrier and a carrier segment correspond, according to the bandwidth of the stand-alone carrier or the bandwidths of the stand-alone carrier and the carrier segment and corresponding relationship between a bandwidth and a resource block group size; and
a resource assigner configured to assign a resource to terminal equipment according to the resource block group sizes or the numbers of the resource block subsets.

### Claim 15 (depends on 14)

The base station according to claim 14, wherein the base station further comprises:
an encoder configured to encode indication information including a resource assignment result in a predetermined indication information format; and
a transmitter configured to notify the encoded indication information to the terminal equipment.

### Claim 16 (depends on 15)

The base station according to claim 15, wherein when the first determining unit determines the resource block group sizes or the numbers of the resource block subsets to which the stand-alone carrier and the carrier segment correspond according to the bandwidths of the stand-alone carrier and the carrier segment and corresponding relationship between a bandwidth and a resource block group size, the format of the indication information is a first indication information format respectively indicating the resource assignment result of the stand-alone carrier and the resource assignment result of the carrier segment; and
when the first determining unit determines the resource block group sizes or the numbers of the resource block subsets to which the stand-alone carrier and the carrier segment correspond according to the bandwidth of the stand-alone carrier and corresponding relationship between a bandwidth and a resource block group size, the format of the indication information is a second indication information format integrally indicating the resource assignment result of the stand-alone carrier and the resource assignment result of the carrier segment.

### Claim 17

Terminal equipment, comprising:
a bit number determining unit configured to determine a number of bit of a resource assignment domain in downlink control information according to resource block group sizes or numbers of resource block subsets to which determined a stand-alone carrier and a carrier segment correspond, bandwidths of the stand-alone carrier and the carrier segment and a predetermined indication information format indicating a resource assignment result;
a detector configured to perform blind detection to the downlink control channel to derive the downlink control information assigned to the terminal equipment; and
a resource information acquiring unit configured to determine a resource assignment type according to the first bit of the resource assignment domain after the detector derives the downlink control information assigned to the terminal equipment, and perform decoding according to the indication information format to which the determined resource assignment type corresponds, so as to obtain the resource assignment result.

### Claim 18 (depends on 17)

The terminal equipment according to claim 17, wherein the terminal equipment further comprises: a second determining unit configured to determine the resource block group sizes or numbers of resource block subsets to which the stand-alone carrier and the carrier segment correspond, according to the bandwidth of the stand-alone carrier or the bandwidths of the stand-alone carrier and the carrier segment and corresponding relationship between a bandwidth and a resource block group size.

### Claim 19 (depends on 17)

The terminal equipment according to claim 17, wherein the number of the carrier segment is n, when a first indication information format respectively indicating the resource assignment result of the stand-alone carrier and the resource assignment result of the carrier segment is used as the indication information format, the bit number determining unit determines the number of bit of the resource assignment domain by using the following formula:
1
+
⌈
N
RB


1
DL
/
P
1
⌉
+
∑
i
=
1
n

⌈
N
RBi
DL
/
P
i
⌉
,
or

(
n
+
1
)
+
⌈
N
RB


1
DL
/
P
1
⌉
+
∑
i
=
1
n

⌈
N
RBi
DL
/
P
i
⌉
;
where, NRB1DL is the bandwidth of the stand-alone carrier, NRBi is the bandwidth of the ith carrier segment, P1 is the resource block group size or the number of the resource block subset of the stand-alone carrier, and Pi is the resource block group size or the number of the resource block subset of the ith carrier segment, where, i is an integer from 1 to n, and n is a positive integer.

### Claim 20 (depends on 17)

The terminal equipment according to claim 17, wherein when a second indication information format integrally indicating the resource assignment result of the stand-alone carrier and the resource assignment result of the carrier segment is used as the indication information format, the bit number determining unit determines the number of bit of the resource assignment domain by using the following formula:
1
+
⌈
(
N
RB


1
DL
+
∑
i
=
1
n

N
RBi
DL
)
/
P
1
⌉
;
where NRB1DL is the bandwidth of the stand-alone carrier, NRBiDL, is the bandwidth of the ith carrier segment, and P1 is the resource block group size or the number of the resource block subset determined according to the stand-alone carrier, where, i is an integer from 1 to n, and n is a positive integer.