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A wireless node configured to communicate with a remote node using a timeslot structure. The timeslot structure includes a plurality of data channels and a plurality of control channels, wherein each of the control channels comprises a plurality of control units. The wireless node is further configu

A wireless node configured to communicate with a remote node using a timeslot structure. The timeslot structure includes a plurality of data channels and a plurality of control channels, wherein each of the control channels comprises a plurality of control units. The wireless node is further configured to assign any one of a plurality of control messages for the data channels to any one of the control units.

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1. An apparatus for wireless communications, comprising: a processing system configured to communicate with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, the processing system being further configured

1. An apparatus for wireless communications, comprising: a processing system configured to communicate with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, the processing system being further configured to assign one of control messages for the data channels to one of the control units;wherein the processing system is further configured to assign the one of the control messages to one of the control channels as a function of a processing capability of the remote node;wherein the processing system is further configured to, in one timeslot, receive on a first one of the control channels and transmit on a second one of the control channels. 2. The apparatus of claim 1 wherein each of the control channels comprises an OFDM symbol having a plurality of tones, and wherein each of the control units comprises a portion of the tones for one of the control channels. 3. The apparatus of claim 1 wherein the processing system is further configured to assign a second one of the control messages to a second one of the control units, wherein the second one of the control messages comprises a grant in response to a transmit request from the remote node. 4. The apparatus of claim 1 wherein the processing system is further configured to assign a second one of the control messages to a second one of the control units, wherein the second one of the control messages comprises an acknowledgement that a transmission has been successfully received by the apparatus. 5. An apparatus for wireless communications, comprising: a processing system configured to communicate with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, the processing system being further configured to assign one of control messages for the data channels to one of the control units, and to switch between a first mode comprising transmitting on the data channels in every other timeslot and a second mode comprising transmitting on the data channels in consecutive timeslots;wherein the processing system is further configured to assign the one of the control messages to one of the control channels as a function of a processing capability of the remote node;wherein the processing system is further configured to, in one timeslot, receive on a first one of the control channels and transmit on a second one of the control channels. 6. The apparatus of claim 5 wherein the processing system is further configured to transmit on the first and second ones of the control channels in at least one of said every other timeslot in the first mode, and wherein the processing system is further configured to, in at least one of said consecutive timeslots, receive on the first one of the control channels and transmit on the second one of the control channels during the second mode. 7. The apparatus of claim 1 wherein a second one of the control messages comprises a request for a collision avoidance mode of transmission. 8. The apparatus of claim 7 wherein the processing system is further configured to transmit said second one of the control messages on one of the control channels, the processing system being further configured to communicate all other control messages with the remote node on one or more different control channels during at least one timeslot following said second one of the control messages. 9. An apparatus for wireless communications, comprising: a processing system configured to communicate with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, the processing system being further configured to assign one of control messages for the data channels to one of the control units;wherein a second one of the control messages comprises a request for a collision avoidance mode of transmission and a weight indicating a degree of interference seen by a node transmitting the second one of the control messages, and wherein the processing system is further configured to receive said second one of the control messages on a first one of the control channels, and, in response to receiving said second one of the control messages, to avoid using a second one of the control channels for communicating control messages with the remote node during at least one timeslot following the message. 10. The apparatus of claim 1 wherein the processing system is further configured to transmit one of the control messages on at least two of the control channels in one timeslot. 11. A method of communications, comprising: communicating with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, and each of the control units is capable of carrying one of control messages for the data channels;assigning one of the control messages to one of the control units;assigning the one of the control messages to one of the control channels as a function of a processing capability of the remote node; andin one timeslot, receiving on a first one of the control channels and transmitting on a second one of the control channels. 12. The method of claim 11 wherein each of the control channels comprises an OFDM symbol having a plurality of tones, and wherein each of the control units comprises a portion of the tones for one of the control channels. 13. The method of claim 11 further comprising assigning a second one of the control messages to a second one of the control units, wherein the second one of the control messages comprises a grant in response to a transmit request from the remote node. 14. The method of claim 11 further comprising assigning a second one of the control messages to a second one of the control units, wherein the a second one of the control messages comprises an acknowledgement that a transmission has been successfully received. 15. A method of communications, comprising: communicating with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, and each of the control units is capable of carrying one of control messages for the data channels;assigning one of the control messages to one of the control units;assigning the one of the control messages to one of the control channels as a function of a processing capability of the remote node;in one timeslot, receiving on a first one of the control channels and transmitting on a second one of the control channels; andswitching between a first mode comprising transmitting on the data channels in every other timeslot and a second mode comprising transmitting on the data channels in consecutive timeslots. 16. The method of claim 15 further comprising transmitting on the first and second ones of the control channels in at least one of said every other timeslot in the first mode, and, in at least one of said consecutive timeslots, receiving on the first one of the control channels and transmitting on the second one of the control channels during the second mode. 17. The method of claim 11 wherein a second one of the control messages comprises a request for a collision avoidance mode of transmission. 18. The method of claim 17 further comprising transmitting the second one of the control messages on the first one of the control channels and communicating all other control messages with the remote node on the second one of the control channels during at least one timeslot following the second one of the control messages. 19. A method of communications, comprising: communicating with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, and each of the control units is capable of carrying one of control messages for the data channels;assigning one of the control messages to one of the control units;receiving a second one of the control messages on a first one of the control channels, wherein the second one of the control messages comprises a request for a collision avoidance mode of transmission and a weight indicating a degree of interference seen by a node transmitting the second one of the control messages; andin response to receiving said second one of the control messages, avoiding using a second one of the control channels for communicating control messages with the remote node during at least one timeslot following the message. 20. The method of claim 11 further comprising transmitting said one of the control messages on at least two of the control channels in one timeslot. 21. An apparatus for wireless communications, comprising: means for communicating with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, and each of the control units is capable of carrying one of control messages for the data channels;means for assigning one of control messages for the data channels to one of the control units;means for assigning the one of the control messages to the one of the control channels as a function of a processing capability of the remote node; andmeans for, in one timeslot, receiving on a first one of the control channels and transmitting on a second one of the control channels. 22. The apparatus of claim 21 wherein each of the control channels comprises an OFDM symbol having a plurality of tones, and wherein each of the control units comprises a portion of the tones for one of the control channels. 23. The apparatus of claim 21 further comprising means for assigning a second one of the control messages to a second one of the control units, wherein the second one of the control messages comprises a grant in response to a transmit request by the remote node. 24. The apparatus of claim 21 further comprising means for assigning a second one of the control messages to a second one of the control units, wherein the second one of the control messages comprises an acknowledgement that a transmission has been successfully received. 25. An apparatus for wireless communications, comprising: means for communicating with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units,means for assigning one of control messages for the data channels to one of the control units;means for assigning the one of the control messages to one of the control channels as a function of a processing capability of the remote node;means for, in one timeslot, receiving on a first one of the control channels and transmitting on a second one of the control channels; andmeans for switching between a first mode comprising transmitting on the data channels in every other timeslot and a second mode comprising transmitting on the data channels in consecutive timeslots. 26. The apparatus of claim 25 further comprising means for transmitting on the first and second ones of the control channels in at least one of said every other timeslot in the first mode and means for, in at least one of said consecutive timeslots, receiving on the first one of the control channels and transmitting on the second one of the control channels during the second mode. 27. The apparatus of claim 21 wherein a second one of the control messages comprises a request for a collision avoidance mode of transmission. 28. The apparatus of claim 27 further comprising means for transmitting said second one of the control messages on one of the control channels and means for communicating all other control messages with the remote node on one or more different control channels during at least one timeslot following said second one of the control messages. 29. An apparatus for wireless communications, comprising: means for communicating with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units;means for assigning one of control messages for the data channels to one of the control units;means for receiving a second one of the control messages on a first one of the control channels, wherein the second one of the control messages comprises a request for a collision avoidance mode of transmission and a weight indicating a degree of interference seen by a node transmitting the second one of the control messages; andmeans for, in response to receiving said second one of the control messages, avoiding using a second one of the control channels for communicating control messages with the remote node during at least one timeslot following the message. 30. The apparatus of claim 21 further comprising means for transmitting one of the control messages on at least two of the control channels in one timeslot. 31. A computer-program product for wireless communications comprising: a non-transitory machine-readable storage medium encoded with instructions executable by a processing system to: communicate with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, and each of the control units is capable of carrying one of control messages for the data channels;assign one of control messages for the data channels to one of the control units;assign the one of the control messages to one of the control channels as a function of a processing capability of the remote node; andin one timeslot, receive on a first one of the control channels and transmit on a second one of the control channels. 32. An access terminal for wireless communications, comprising: a processing system configured to communicate with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, the processing system being further configured to assign one of control messages for the data channels to one of the control units; anda user interface configured to enable a user to control communications between the processing system and the remote node;wherein the processing system is further configured to assign the one of the control messages to one of the control channels as a function of a processing capability of the remote node;wherein the processing system is further configured to, in one timeslot, receive on a first one of the control channels and transmit on a second one of the control channels. 33. An access point, comprising: a wireless network adapter configured to support a backhaul for a remote node to a network; anda processing system configured to communicate with a remote node using a timeslot structure having data channels and control channels, wherein each of the control channels comprises control units, the processing system being further configured to assign one of control messages for the data channels to one of the control units;wherein the processing system is further configured to assign the one of the control messages to one of the control channels as a function of a processing capability of the remote node;wherein the processing system is further configured to, in one timeslot, receive on a first one of the control channels and transmit on a second one of the control channels. 34. The apparatus of claim 1, wherein the one of the control messages further comprises information identifying a timeslot and one or more data channels on which data is to be transmitted by the apparatus. 35. The apparatus of claim 1, wherein the one of the control messages further comprises a pilot signal. 36. The apparatus of claim 3, wherein the second one of the control messages further comprises a data rate for data to be transmitted to the apparatus. 37. The apparatus of claim 5, wherein the first mode comprises receiving on the data channels in alternating timeslots. 38. The apparatus of claim 1, wherein said one of the control messages comprises an acknowledgement and the processing system is further configured to assign said one of the control messages to the first one of the control channels or to the second one of the control channels based on the processing capability of the remote node. 39. The apparatus of claim 1, wherein a second one of the control messages comprises a grant to transmit and a third one of the control messages comprises a pilot signal, and the processing system is further configured to receive the second one of the control messages on the first one of the control channels and to transmit the third one of the control messages on the second one of the control channels. 40. The apparatus of claim 5, wherein a second one of the control messages comprises a request to transmit during a timeslot initially allocated to the remote node for transmission by the remote node and a third one of the control messages comprises a grant to transmit, and the processing system is further configured to transmit the second one of the control message on the first one of the control channels and to switch from the first mode to the second mode upon receiving the third one of the control messages on the second one of the control channels. 41. The apparatus of claim 40, wherein the second one of the control messages is transmitted in a first timeslot and the third one of the control messages is received in a second timeslot immediately following the first timeslot. 42. The apparatus of claim 5, wherein the processing system is further configured to determine whether the apparatus has more data to transmit to the remote node than the remote node has to transmit to the apparatus, and to switch from the first mode to the second mode upon determining that the apparatus has more data to transmit to the remote node. 43. The apparatus of claim 1, wherein the one of the control messages comprises a request by the apparatus to transmit during a timeslot initially allocated to the remote node for transmission by the remote node, wherein the request by the apparatus to transmit during the timeslot comprises a request by the apparatus to transmit data on one or more of the data channels during the timeslot initially allocated to the remote node. 44. The apparatus of claim 43, wherein the timeslot is initially allocated for data transmission by the remote node to the apparatus. 45. The apparatus of claim 5, wherein the first mode comprises transmitting data to the remote node and receiving data from the remote node in alternating time slots, and the second mode comprises transmitting data to the remote node in consecutive timeslots.