Patent ID: 8797956
Filing Date: 2014-08-05
Classification: H04B,H04L,H04W

Abstract:
1. A mobile communication system configured to send and receive control signals between a mobile station and a mobile switching center via a first radio bearer that is set between the mobile station and a relay node, a second radio bearer that is set between the relay node and a radio base station, and a wired bearer that is set between the radio base station and the mobile switching center, wherein wherein the relay node comprises: wherein the radio base station comprises: wherein the mobile switching center comprises: wherein the control signals are configured to be sent and received on a first session terminating between the first layer function of the relay node and the first layer function of the radio base station and a second session terminating between the second layer function of the radio base station and the second layer function of the mobile switching center, wherein keep-alive processing for the first session is configured to be performed between the first layer function of the relay node and the first layer function of the radio base station, wherein keep-alive processing for the second session is configured to be performed between the second layer function of the radio base station and the second layer function of the mobile switching center, wherein security processing is configured to be performed between the first layer function of the relay node and the first layer function of the radio base station, and wherein security processing is configured to be performed between the second layer function of the radio base station and the second layer function of the mobile switching center.