US 9,814,020 B2
Method of transmitting RRC messages in RRC-idle mode
Miao-Er Lin, New Taipei (TW)
Assigned to ACER INCORPORATED, New Taipei (TW)
Filed by ACER INCORPORATED, New Taipei (TW)
Filed on Dec. 16, 2014, as Appl. No. 14/571,308.
Claims priority of provisional application 61/938,702, filed on Feb. 12, 2014.
Claims priority of application No. 103125326 A (TW), filed on Jul. 24, 2014.
Prior Publication US 2015/0230204 A1, Aug. 13, 2015
Int. Cl. H04W 72/00 (2009.01); H04W 76/02 (2009.01); H04W 74/08 (2009.01); H04W 74/00 (2009.01)
CPC H04W 72/005 (2013.01) [H04W 74/002 (2013.01); H04W 74/0833 (2013.01); H04W 76/02 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of transmitting (radio resource control) RRC messages in an RRC-idle mode, comprising:
providing at least one single transmission preamble for use in a wireless communication system which includes a base station and a user equipment, wherein the least one single transmission preamble is selected from a first preamble group which includes a plurality of single transmission preambles for transmitting a first long RRC message in the RRC-idle mode, or is selected from a second preamble group which includes a plurality of single transmission preambles for transmitting a first short RRC message in the RRC-idle mode;
providing a third preamble group for transmitting a second long RRC message in an RRC-connected mode;
providing a fourth preamble group for transmitting a second short RRC message in the RRC-connected mode;
the user equipment transmitting the at least one single transmission preamble to the base station when the user equipment operating in the RRC-idle mode is required to send an RRC message in response to an MBMS (Multimedia Broadcast Multicast Service) counting request message received from the base station without establishing an RRC connection;
the base station transmitting a random access response message to the user equipment; and
the user equipment transmitting the RRC message to the base station according to the random access response message without establishing the RRC connection.