Methods and apparatuses for allocating wireless resources in wireless network

• US 9,161,342 B2
• Filed: 03/14/2013
• Issued: 10/13/2015
• Est. Priority Date: 09/28/2012
• Status: Expired due to Fees

• Current Assignee: WSOU Investments, LLC (WSOU Holdings, LLC)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: Ye, Sigen, Wong, Shin Horng, BAKER, Matthew P J
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): LOO, JUVENA W
• Application Number:
  US13/803,794
• Publication Number:
  US 20140092820A1
• Time in Patent Office: 943 Days
• Field of Search: 370310-349
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0041 Frequency-non-contiguous
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

In a method for transmitting control information in a wireless network, a wireless resource allocation module assigns at least one of (i) a first plurality of enhanced resource element groups to a first set of enhanced control channel elements, and (ii) a second plurality of enhanced resource element groups to a second set of enhanced control channel elements; and a transceiver transmits the control information to at least one radio frequency equipment using at least one of the first and second sets of enhanced control channel elements.

Claims

1. A method for transmitting control information in a wireless network, the method comprising:

assigning a first plurality of enhanced resource element groups to a first set of enhanced control channel elements; and

transmitting the control information to at least one radio frequency equipment using the first set of enhanced control channel elements;

wherein

the first plurality of enhanced resource element groups for each first enhanced control channel element in the first set of enhanced control channel elements have equally spaced indices within a single physical resource block pair for at least a first control channel transmission set, and

the first plurality of enhanced resource element groups are assigned to each first enhanced control channel element such that an m-th enhanced control channel element within the first control channel transmission set includes, from among the first plurality of enhanced resource element groups, enhanced resource element groups having index k,

where k=mod(m,M1)+n*M1, for n=0, 1, . . . , N−

1, within a p-th physical resource block pair p,

p=floor(m/M1),

m=0, . . . , M−

1,

M=M1×

P,

M1=16/N,

N is a number of enhanced resource element groups assigned to each first enhanced control channel element in the first set of enhanced control channel elements, and

the first control channel transmission set includes 16 enhanced control channel elements.

2. The method of claim 1, wherein the first control channel transmission set and a second control channel transmission set have one of a same and different set of physical resource block pairs.

3. The method of claim 1, wherein the first enhanced control channel elements in the first set of enhanced control channel elements are indexed sequentially in the physical resource block pair within the first control channel transmission set.

4. The method of claim 1, further comprising:

assigning a second plurality of enhanced resource element groups to a second set of enhanced control channel elements; and

transmitting the control information to at least one radio frequency equipment using the second set of enhanced control channel elements;

wherein the second plurality of enhanced resource element groups for each second enhanced control channel element in the second set of enhanced control channel elements are from multiple physical resource block pairs for at least a second control channel transmission set; and

wherein the second enhanced control channel elements in the second set of enhanced control channel elements are indexed uniquely within the second control channel transmission set.

5. The method of claim 4, wherein

the first control channel transmission set and the second control channel transmission set have the same set of physical resource block pairs, and

at least a first enhanced control channel element from the first set of enhanced control channel elements and a second enhanced control channel element from the second set of enhanced control channel elements have the same index and share at least one enhanced resource element group.

6. The method of claim 4, wherein if a number of physical resource block pairs in the second control channel transmission set is greater than or equal to a number of enhanced resource element groups per second enhanced control channel element within the second control channel transmission set, then each second enhanced control channel element includes enhanced resource element groups from different physical resource block pairs.

7. The method of claim 4, wherein each second enhanced control channel element includes enhanced resource element groups having the same index.

8. The method of claim 4, wherein each second enhanced control channel element includes enhanced resource element groups having different indices.

9. The method of claim 1, wherein an index of a first enhanced control channel element is used to implicitly determine a resource for acknowledgement feedback.

10. The method of claim 4, wherein if a number of physical resource block pairs in the second control channel transmission set is less than a number of enhanced resource element groups per second enhanced control channel element within the second control channel transmission set, then a portion of the enhanced resource element groups assigned to each second enhanced control channel element have different indices and are from different physical resource block pairs.

11. A radio frequency equipment comprising:

a wireless resource allocation module configured to assign a first plurality of enhanced resource element groups to a first set of enhanced control channel elements; and

a transmitter configured to transmit control information to at least one other radio frequency equipment using the first set of enhanced control channel elements;

wherein

the first plurality of enhanced resource element groups for each first enhanced control channel element in the first set of enhanced control channel elements have equally spaced indices within a single physical resource block pair for at least a first control channel transmission set, and

the first plurality of enhanced resource element groups are assigned to each first enhanced control channel element such that an m-th enhanced control channel element within the first control channel transmission set includes, from among the first plurality of enhanced resource element groups, enhanced resource element groups, having index k,

where k=mod(m, M1)+n*M1, for n=0, 1, . . . , N−

1, within a p-th physical resource block pair p,

p=floor(m/M1),

m=0, . . . , M−

1,

M=M1×

P,

M1=16/N,

N is a number of enhanced resource element groups assigned to each first enhanced control channel element in the first set of enhanced control channel elements, and

the first control channel transmission set includes 16 enhanced control channel elements.

12. The radio frequency equipment of claim 11, wherein the first control channel transmission set and a second control channel transmission set have one of a same and different set of physical resource block pairs.

13. The radio frequency equipment of claim 11, wherein the first enhanced control channel elements in the first set of enhanced control channel elements are indexed sequentially in the physical resource block pair within the first control channel transmission set.

14. The radio frequency equipment of claim 11, wherein

the wireless resource allocation module is further configured to assign a second plurality of enhanced resource element groups to a second set of enhanced control channel elements;

the transmitter is further configured to transmit the control information to at least one radio frequency equipment using the second set of enhanced control channel elements;

the second plurality of enhanced resource element groups for each second enhanced control channel element in the second set of enhanced control channel elements are from multiple physical resource block pairs for at least a second control channel transmission set; and

the enhanced control channel elements in the second set of enhanced control channel elements are indexed uniquely within the second control channel transmission set.

15. The radio frequency equipment of claim 14, wherein

the first control channel transmission set and the second control channel transmission set have the same set of physical resource block pairs;

and

at least a first enhanced control channel element from the first set of enhanced control channel elements and a second enhanced control channel element from the second set of enhanced control channel elements have the same index and share at least one enhanced resource element group.

16. The radio frequency equipment of claim 14, wherein if a number of physical resource block pairs in the second control channel transmission set is greater than or equal to a number of enhanced resource element groups per second enhanced control channel element within the second control channel transmission set, then each second enhanced control channel element includes enhanced resource element groups from different physical resource block pairs.

17. The radio frequency equipment of claim 14, wherein each second enhanced control channel element includes enhanced resource element groups having the same index.

18. The radio frequency equipment of claim 14, wherein each second enhanced control channel element includes enhanced resource element groups having different indices.

19. The radio frequency equipment of claim 14, wherein if a number of physical resource block pairs in the second control channel transmission set is less than a number of enhanced resource element groups per second enhanced control channel element within the second control channel transmission set, then a portion of the enhanced resource element groups assigned to each second enhanced control channel element have different indices and are from different physical resource block pairs.