Method for re-direction of uplink access

• US 9,001,766 B2
• Filed: 01/22/2013
• Issued: 04/07/2015
• Est. Priority Date: 10/30/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Young Dae, Chun, Sung Duck, Park, Sung Jun, Yi, Seung June
• Primary Examiner(s): Wu, Jianye
• Application Number:
  US13/747,254
• Publication Number:
  US 20130136082A1
• Time in Patent Office: 805 Days
• US Class Current: 370/329
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Disclosed are methods for prompt re-direction of uplink access of a specific user equipment and controlling random access. Specifically, for initial random access to a network, if a user equipment (UE) transmits a preamble (S201), which includes information related to random access, to a network node, the network node sends grant/rejection information of the preamble and re-direction information as a response message to the preamble (S203) to the UE.

Claims

1. A method for a random access procedure by a user equipment (UE) in a LTE (Long Term Evolution) system, the method comprising:

performing a first random access to a base station by transmitting a random access preamble to the base station as a message 1 of the random access procedure;

receiving a random access response message from the base station as a message 2 of the random access procedure using a downlink shared channel (DL-SCH) and a control channel, the random access response message comprising wait time information; and

suspending a second random access to the base station using the wait time information in the random access response message,

wherein each of the DL-SCH and the control channel carries respective information for the random access response message.

2. The method of claim 1, wherein the random access response message further comprise at least one identity associated with the message 1 of the random access procedure.

3. The method of claim 1, wherein the control channel is a L1/L2 control channel.

4. The method of claim 1, wherein the random access response message is association with a RA-RNTI (Random Access-Radio Network Temporary Identifier).

5. A method for a random access procedure by a base station in a LTE (Long Term Evolution) system, the method comprising:

obtaining a first random access from at least one user equipment (UE) by receiving a random access preamble from the at least one UE as a message 1 of the random access procedure; and

transmitting a random access response message to the at least one UE as a message 2 of the random access procedure using a downlink shared channel (DL-SCH) and a control channel, the random access response message comprising wait time information,

wherein the wait time information in the random access response message is used for the at least one UE to suspend a second random access to the base station,

wherein each of the DL-SCH and the control channel carries respective information for the random access response message.

6. The method of claim 5, wherein the random access response message further comprise at least one identity associated with the message 1 of the random access procedure.

7. The method of claim 5, wherein the control channel is a L1/L2 control channel.

8. The method of claim 5, wherein the random access response message is association with a RA-RNTI (Random Access-Radio Network Temporary Identifier).