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US 6,958,989 B1Granted
Uplink scrambling code assignment for a random access channel
AssigneeInterDigital Technology Corporation
InventorsStephen G. Dick, Eldad Zeira
Life of this patent
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AssigneeInterDigital Technology Corporation
InventorsStephen G. Dick, Eldad Zeira
Estimating the term…
A user equipment transmits a data packet using a selected signature in a time slot of a radio frame within a superframe of a random access channel. The superframe being time divided into radio frames. A base station identifies the selected signature, transmission time slot and transmission radio frame of the data packet. The base station determines an uplink scrambling code for the user equipment based on in part the identified signature, transmission time slot and transmission radio frame. The base station selectively transmits an acknowledgment message based on in part an availability of the determined uplink scrambling code. The user equipment receives the acknowledgment message and transmits a subsequent data packet using the determined uplink scrambling code.
A method of assigning uplink scrambling codes for use by a user equipment in transmitting packet data over a random access channel in a code division multiple access communication system, the random access channel being time divided into time slots, the method comprising:
A controller for assigning scrambling codes for packet data being transferred over a channel in a wireless code division multiple access communication system, the channel being time divided into time slots, the controller comprising:
Dependencies are inferred from the claim text.