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US 2010/0166087 A1Published application
Downlink subchannelization scheme for 802.16m
AssigneeIntel Corporation
InventorYUVAL LOMNITZ
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Abstract
Two novel subchannelization methods are disclosed, for use in a 802.16m system. A downlink subchannelization method supports both localized and distributed sub-carriers, different modulation modes, and supports a variety of different fractional frequency reuse (FFR) group allocations.
Claims20
A subchannelization method comprising:
- partitioning an allocated bandwidth into a plurality of orthogonal fractional frequency reuse groups;
- wherein the fractional frequency reuse group comprises data sub-carriers and pilot sub-carriers.
A subchannelization method comprising:
- partitioning an allocated bandwidth into a group of a plurality of groups, wherein the allocated bandwidth comprises data sub-carriers and pilot sub-carriers;
- sub-dividing a localized group from the group, the localized group comprising one or more clusters of contiguous sub-carriers of the allocated bandwidth, each cluster comprising at least one pilot sub-carrier and at least one data sub-carrier, wherein the localized group comprises at least one pilot sub-carrier;
- sub-dividing the group into a distributed group, the distributed group comprising one or more clusters of pseudo-randomly distributed sub-carriers of the allocated bandwidth, wherein the distributed group comprises at least one second pilot sub-carrier.
- allocating sub-carriers from the localized group to one or more localized sub-channels;
- wherein the at least one pilot sub-carrier in the localized group and the at least one second pilot sub-carrier in the distributed group belong exclusively to the group.
2 more elements
A subchannelization method comprising:
- partitioning a physical frequency allocation into a first frequency partition and a second frequency partition, wherein the first frequency partition is designated for a first set of subscriber stations in a cellular neighborhood and the second frequency partition is designated for a second set of subscriber stations in the cellular neighborhood;
- sub-dividing the first frequency partition into a localized group and a distributed group, the localized and distributed groups each comprising at least one pilot sub-carrier and at least one data sub-carrier;
- assigning the localized group to a first set of sub-channels, wherein the first set of sub-channels is designated to the first set of subscriber stations;
- and wherein the first set of sub-channels is not designated to the second set of subscriber stations in the cellular neighborhood;
- and
- assigning the distributed group to a second set of sub-channels, wherein the second set of sub-channels is designated to the first set of subscriber stations but not designated to the second set of subscriber stations.
3 more elements
Dependencies are inferred from the claim text.