Patent ID: 8649288

Claim:
A method for acquiring random access information in a Long Term Evolution (LTE) system, comprising: during a random access procedure in a competition-based random access mode, measuring and acquiring parameter information in the random access procedure by a user equipment; and after the success of the random access, reporting partial or all of acquired parameter information by the user equipment to a base station, the step of measuring parameter information in the random access process by the user equipment comprises: the user equipment initiating the random access process and resetting a counter, N noRAR , N Msg3max , N ContentionTimeOut and N NoExpectMsg4 , the counter used for counting a number of times that the user equipment transmits a random access preamble during the random access process the N noRAR representing a number of times that the UE receives no random access response from the base station within a predetermined time after the user equipment transmits a random access preamble during the random access process, the N Msg3max representing a number of times that the number of messages 3 of the LTE system retransmitting times by the user equipment exceeds a first predetermined threshold during the random access process, the N ContentionTimeOut representing a number of times that a contention resolution timer is timeout during the random access process, the N NoExpectMsg4 representing a number of times that the user equipment receives a non-expected message 4 of the LTE system; step 1, the user equipment transmits a random access preamble to the base station and the counter is increased by 1; step 2, the user equipment determines whether a random access response is received within a predetermined time, if received, executes Step 3; otherwise, the N noRAR is increased by 1, then executes Step 6; step 3, the user equipment transmits a message 3 to the base station and starts the contention resolution timer; the user equipment retransmits the message 3 when receiving a response message from the base station indicating that the message 3 has not been received, restarts the contention resolution timer and determines whether the number of retransmitting times exceeds the first predetermined threshold, if exceeds, the N Msg3max is increased by 1, then executes step 6; otherwise executes step 4; step 4, the user equipment determines whether a message 4 is received from the base station before the contention resolution timer is timeout, if received, executes Step 5; otherwise, the N ContentionTimeOut is increased by 1, then executes step 6; step 5, the user equipment determines whether the message 4 received from the base station is a predetermined message 4 that is expected to be received by the UE , if yes, the measurement is over; otherwise, the N NoExpectMsg4 is increased by 1 then executes step 6; and step 6, determining whether the value of the counter reaches a second predetermined threshold, if reaches, the measurement is over; otherwise, executes step 1.