Apparatus, method and computer program product providing usage of E-DCH as RACH shared channel

摘要

Apparatus, methods and computer program products in a wireless communications system provide an enhanced dedicated channel (E-DCH) for use by user equipment operating in the wireless communications system for use in conjunction with the random access procedure. The user equipment has circuitry to request a HS random access channel and, in response to receiving an assignment from a Node B of a dedicated mode channel for use as the random access channel, to send uplink data in a random access fashion over the assigned dedicated mode channel while receiving feedback from the Node B over at least one downlink L1 feedback channel. The Node B has circuitry to assign to the UE the dedicated mode channel for use as the random access channel, to receive uplink data in a random access fashion over the assigned dedicated mode channel, and to send feedback information to the UE over at least one downlink L1 feedback channel.

主权项

1. An apparatus comprising at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
to cause the apparatus to request a high speed random access channel from a wireless communications network, where the high speed random access channel comprises a first channel configured as an enhanced dedicated physical channel; to receive a high speed random access channel assignment from the wireless communications network, wherein the high speed random access channel assignment comprises an indication of the first channel; to transmit a first portion of a message over the high speed random access channel at a first bit rate; to receive a capacity allocation message, wherein the capacity allocation message is received on an enhanced dedicated absolute grant channel; in response to receiving the capacity allocation message, to transmit a second portion of the message using the enhanced dedicated physical channel over the high speed random access channel at a second bit rate, where the second bit rate differs from the first bit rate; and to receive a retransmission request on a physical layer feedback channel.