Channel structures for a quasi-orthogonal multiple-access communication system
First Claim
17. A method of assigning system resources in a communication system, comprising:
- scheduling a plurality of terminals for data transmission; and
assigning the plurality of terminals wit chapels in at least two channel sets, wherein each channel set comprises a plurality of channels and is associated with a specific mapping of the plurality of channels to system resources available for data transmission, and wherein the mapping for each channel set is pseudo-random with respect to the mapping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels.
2 Assignments
0 Petitions
Accused Products
Abstract
A channel structure has at least two channel sets. Each channel set contains multiple channels and is associated with a specific mapping of the channels to the system resources available for data transmission. Each channel set may be defined based on a channel tree having a hierarchical structure. To achieve intra-cell interference diversity, the channel-to-resource mapping for each channel set is pseudo-random with respect to the mapping for each remaining channel set. In each scheduling interval, terminals are scheduled for transmission on the forward and/or reverse link. The scheduled terminals are assigned channels from the channel sets. Multiple terminals may use the same system resources and their overlapping transmissions may be separated in the spatial domain. For example, beamforming may be performed to send multiple overlapping transmissions on the forward link, and receiver spatial processing may be performed to separate out multiple overlapping transmissions received on the reverse link.
308 Citations
62 Claims
-
17. A method of assigning system resources in a communication system, comprising:
-
scheduling a plurality of terminals for data transmission; and
assigning the plurality of terminals wit chapels in at least two channel sets, wherein each channel set comprises a plurality of channels and is associated with a specific mapping of the plurality of channels to system resources available for data transmission, and wherein the mapping for each channel set is pseudo-random with respect to the mapping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels. - View Dependent Claims (18, 19, 20, 21)
-
-
22. An apparatus comprising:
-
means for scheduling a plurality of terminals for data transmission; and
means for assigning e plurality of terminals wit channels in at least two channel sets, wherein each channel set comprises a plurality of channels and is associated with a specific mapping of the plurality of channels to system resource available for data trans ion, and wherein the mapping for each camel set is pseudo-random with respect to the mapping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels, - View Dependent Claims (23, 24)
-
-
25. An apparatus comprising:
-
a controller operative to receive an assignment of a channel to use for data transmission and to determine a mapping of the channel to system resources available for data transmission, wherein the channel is selected from among at least two channel sets, wherein each channel set comprises a plurality of channels and is associated with a specific mapping of the plurality of channels to the system resources available for damn transmission, and wherein the mapping for each channel set is pseudo-random with respect to the mapping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels; and
a processor operative to process data for transmission on system resources mapped to the channel. - View Dependent Claims (26, 27, 28)
-
-
29. An apparatus comprising:
-
means for receiving an assignment of a channel to use for data transmission, wherein the channel is selected from among at least two channel sets, wherein each channel set comprises a plurality of channels and is associated with a specific mapping of the plurality of channels to system resources available for data transmission, and wherein the mapping for each channel set is pseudo-random with respect to the mapping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels;
means for determining a mapping of the channel to the system resources available for data transmission; and
means for transmitting data on system resources mapped to the channel. - View Dependent Claims (30, 31)
-
-
32. An apparatus comprising:
-
a scheduler configured to schedule a plurality of terminals for data transmission and to assign the plurality of terminals with channels in at least two channel sets, wherein each channel set comprises a plurality of channels having at least some overlapping portions, and wherein the mapping for each channel set is substantially random with respect to he mapping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels; and
a controller configured to form channel assignments for the plurality of terminal. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
-
-
37-1. The apparatus of claim 33, wherein the controller is further configured to assign the plurality of terminals so that each channel tree of the at least two channel trees has a loading factor that is an integer.
-
44. A method of assigning system resources in a communication system, comprising:
-
assigning the plurality of terminals with channels in at least two channel sets, wherein each channel set comprises a plurality of channels having at least some overlapping portions, and wherein the mapping for each channel set is substantially random with respect to the ping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels; and
scheduling a plurality of terminals for data transmission - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53)
-
-
54. An apparatus comprising:
-
means for assinging the plurality of terminals with channels in at least two channel sets, wherein each channel set comprises a plurality of channels having at least some overlapping portions, and wherein the mapping for each channel set is substantially random with respect to the mapping for each remaining one of the at least two channel sets for at least a subset of the plurality of channels; and
a processor that assigns a plurality of terminals for data transmission - View Dependent Claims (55, 56, 57, 58, 59, 60, 61, 62)
-
Specification