Random access procedure with enhanced coverage

摘要

A random access procedure for use by a UE wireless communication terminal in communicating with a base station (or Node-B or eNB) of a radio access network, and in particular a E-UTRA network. A random access preamble is sent by the UE via RACH separate and prior to a random access message burst, which is sent on SCH but not until the UE receives one or more messages indicating an acknowledgment of the preamble and providing an allocation on SCH for use in transmitting the message burst, and also providing a preamble identifier, which the radio access network can then use to request retransmission of the message burst if necessary.

主权项

1. A method, comprising:
transmitting a message burst preamble by a user equipment over a random access channel of a wireless communication system, and including a signature with the preamble; receiving by the user equipment, one or more messages in response to said transmission, said one or more messages indicating an acknowledgment of having received the preamble and providing a preamble identifier and a resource allocation of a shared channel; and transmitting a message burst by the user equipment on the shared channel according to the resource allocation, and including an address in the message burst for use in identifying the user equipment.