METHODS AND APPARATUSES FOR TRANSMITTING CONTROL-PLANE MESSAGES IN CELLS USING DIFFERENT RADIO ACCESS TECHNOLOGIES: abstract simplified (18204138)

• This abstract for appeared for patent application number 18204138 Titled 'METHODS AND APPARATUSES FOR TRANSMITTING CONTROL-PLANE MESSAGES IN CELLS USING DIFFERENT RADIO ACCESS TECHNOLOGIES'

Simplified Explanation

This abstract describes a method for transmitting control plane (CP) messages between a radio station and a radio terminal in a second cell. The second cell uses a different radio access technology (RAT) than the first cell and is subordinate to it. The transmission of CP messages is triggered when certain conditions are met, such as the content or type of the message, the type of radio bearer used, the transmission cause, or the type of core network associated with the message. This method aims to improve the efficiency of transmitting CP messages in a radio architecture that combines two different RATs.

Original Abstract Submitted

A radio station () transmits or receives, to or from a radio terminal () in a second cell (, ), a CP message containing a NAS message or an RRC message or both, when a predetermined condition is satisfied. The second cell (, ) uses a RAT different from that of the first cell, and is used in addition and subordinate to the first cell. The predetermined condition relates to at least one of: (a) a content or type of the CP message; (b) a type of a signalling radio bearer used to transmit the CP message; (c) a transmission cause of the CP message; and (d) a type of a core network associated with the NAS message. It is thus, for example, possible to contributing to efficient transmission of control plane (CP) messages in a radio architecture that provides interworking of two different Radio Access Technologies (RATs).