Granted Patent B2

US 8,311,564 · App. 12/575,625 · Granted Nov 13, 2012

Assignee: Nokia Siemens Networks Oy

Abstract

Claims (46)

1. An apparatus comprising:

a processor configured to:

permute subcarrier indices of a regular band of subcarriers, including subcarriers assigned to mobile station(s) operating in a single carrier mode and subcarriers assigned to mobile station(s) operating in a multiple carrier mode, to generate a first permuted regular band of subcarrier indices;

permute subcarrier indices of the first permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode with subcarrier indices of an adjacent guard band of subcarriers to generate a set of physical subcarrier indices.

2. The apparatus of claim 1 wherein the processor being configured to permute subcarrier indices of the first permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode with subcarrier indices of an adjacent guard band of subcarriers comprises the apparatus being configured to:

place guard band subcarriers at subcarrier locations or subcarrier indices at a regular interval or spacing of subcarriers; and

place subcarriers of the first permuted regular band at subcarrier locations or subcarrier indices not taken by the guard band subcarriers.

3. The apparatus of claim 1 wherein the processor being configured to permute subcarrier indices of the first permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode with subcarrier indices of an adjacent guard band of subcarriers comprises the apparatus being configured to:

place guard band subcarriers at subcarrier locations or subcarrier indices at a regular interval or spacing of subcarriers based on the ratio of N/M, where N is a number of subcarriers in the first permuted regular band that are assigned to mobile station(s) operating in the multiple carrier mode and M is a number of guard band subcarriers; and

place subcarriers of the first permuted regular band at subcarrier locations or subcarrier indices not taken by the guard band subcarriers.

4. The apparatus of claim 3 wherein the processor being configured to place guard band subcarriers at subcarrier locations or subcarrier indices comprises the processor being configured to place guard band subcarriers at subcarrier locations or subcarrier indices at a regular interval or spacing of (λ+1) subcarriers, where λ=N/M, where N is a number of subcarriers in the first permuted regular band that are assigned to mobile station(s) operating in the multiple carrier mode and M is a number of guard band subcarriers.

5. The apparatus of claim 2 wherein the processor being configured to permute subcarrier indices of the first permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode with subcarrier indices of an adjacent guard band of subcarriers comprises the apparatus being configured to:

place guard band subcarriers at subcarrier locations or subcarrier indices at a regular interval or spacing of subcarriers based on s (λ+1)×m =g m , m=0, 1, . . . , M−1, where s are the resulting permuted subcarrier indices, λ=N/M, where N is a number of subcarriers in the first permuted regular band that are assigned to mobile station(s) operating in the multiple carrier mode and M is a number of guard band subcarriers, and g m are the guard band subcarriers; and

place subcarriers of the first permuted regular band at subcarrier locations or subcarrier indices not taken by the guard band subcarriers based on s i =p n , i=1, 2, . . . , λ, λ+2, . . . , 2λ+1, 2λ+3, . . . , T−1, n=0, 1, . . . , N−1, where s are the resulting permuted subcarrier indices, and p are the subcarrier indices of subcarriers assigned to mobile station(s) operating in multiple carrier mode of the first permuted regular band of subcarriers.

6. The apparatus of claim 2 wherein the processor is further configured to generate a message for wireless transmission that allocates one or more subcarriers to a mobile station from the set physical subcarrier indices.

7. The apparatus of claim 2 wherein the processor is further configured to transmit or receive data via wireless transmission via one or more subcarriers based on the set physical subcarrier indices.

8. A method of two-stage subcarrier index permutation for a wireless network, the method comprising:

permuting, by a processor, subcarrier indices of a regular band of subcarriers, including subcarriers assigned to mobile station(s) operating in a single carrier mode and subcarriers assigned to mobile station(s) operating in a multiple carrier mode, to generate a first permuted regular band of subcarrier indices; and

permuting subcarrier indices of the first permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode with subcarrier indices of an adjacent guard band of subcarriers.

9. The method of claim 8 wherein the permuting subcarrier indices of a regular band of subcarriers comprises:

permuting subcarrier indices within a first regular band of subcarriers to generate a first permuted regular band of subcarrier indices; and

permuting subcarrier indices within a second regular band of subcarriers to generate a second permuted regular band of subcarrier indices, wherein a guard band of subcarriers is adjacent to both the first regular band of subcarriers and the second regular band of subcarriers, and wherein both the permuting subcarrier indices within the first regular band and the permuting subcarrier indices within the second regular band excludes the guard band subcarriers.

10. The method of claim 9 wherein the permuting subcarrier indices of the first permuted regular band comprises:

permuting subcarrier indices of the guard band of subcarriers and subcarrier indices of both the first permuted regular band of subcarriers and the second permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode.

11. The method of claim 10 and further comprising renumbering the subcarrier indices of the second permuted regular band to avoid a subcarrier index number conflict with the guard band and/or the first permuted regular band.

12. An apparatus comprising a processor, the processor configured to:

permute subcarrier indices within a first regular band of subcarriers to generate a first permuted regular band of subcarrier indices;

permute subcarrier indices within a second regular band of subcarriers to generate a second permuted regular band of subcarrier indices, wherein a guard band of subcarriers is adjacent to both the first regular band of subcarriers and the second regular band of subcarriers, and wherein both the permuting subcarrier indices within the first regular band and the permuting subcarrier indices within the second regular band excludes the guard band subcarriers; and

permute subcarrier indices of the guard band of subcarriers and subcarrier indices of both the first permuted regular band of subcarriers and the second permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode.

13. The apparatus of claim 12 and wherein the processor is further configured to renumber the subcarrier indices of the second permuted regular band to avoid a subcarrier index number conflict with the guard band and/or the first permuted regular band.

14. A method comprising:

performing, by a processor, a first stage permutation, including:

permuting subcarrier indices within a first regular band of subcarriers to generate a first permuted regular band of subcarrier indices;

permuting subcarrier indices within a second regular band of subcarriers to generate a second permuted regular band of subcarrier indices, wherein a guard band of subcarriers is adjacent to both the first regular band of subcarriers and the second regular band of subcarriers, and wherein both the permuting subcarrier indices within the first regular band and the permuting subcarrier indices within the second regular band excludes the guard band subcarriers; and

performing a second stage permutation including permuting subcarrier indices of the guard band of subcarriers and subcarrier indices of both the first permuted regular band of subcarriers and the second permuted regular band of subcarriers that are assigned to mobile station(s) operating in multiple carrier mode.

15. The method of claim 14 and further comprising renumbering the subcarrier indices of the second permuted regular band to avoid a subcarrier index number conflict with the guard band and/or the first permuted regular band.

16. The method of claim 14 and further comprising transmitting or sending a message to identify the subcarriers allocated to a mobile station operating in a multicarrier mode, the identified subcarriers including one or more subcarriers resulting from performing the second stage permutation.

17. A method comprising:

permuting, by a processor, a plurality of regular band physical resource units to generate a plurality of logical resource units; and

permuting subcarriers of one or more of the regular band logical resource units with subcarriers of one or more guard band physical resource units to generate one or more logical distributed resource units; and

sending a message to allocate one or more of the logical distributed resource units to one or more mobile stations operating in a multicarrier mode.

18. The method of claim 17 wherein the permuting subcarriers comprises:

permuting subcarriers of one or more of the regular band logical resource units with subcarriers of a plurality of guard band physical resource units to generate one or more logical distributed resource units.

19. The method of claim 17 wherein the permuting subcarriers comprises:

permuting subcarriers of a first subset of the regular band logical resource units with subcarriers of one or more guard band physical resource units of a first guard band; and

permuting subcarriers of a second subset of the regular band logical resource units with subcarriers of one or more guard band physical resource units of a second guard band.

Assignments (12)

Continuity (2)