Patent ID: 9219537
Filing Date: 2015-12-22
Classification: H04B,H04W

Abstract:
1. A method for transmitting information in a relay communication network, comprising: establishing a first tunnel and a second tunnel, wherein the first tunnel is a tunnel between an Access Service Network Gateway (ASN GW) and a Base Station (BS), the second tunnel is a tunnel between the BS and a Relay Station (RS); performing signaling and/or data transmission between the ASN GW and the RS through the first tunnel and the second tunnel; wherein the step of performing signaling and/or data transmission between the ASN GW and the RS through the first tunnel and the second tunnel comprises: in a case that the transmission is a downlink transmission, the ASN GW sending downlink signaling and/or data to the BS through the first tunnel, and the BS forwarding the downlink signaling and/or data to the RS through the second tunnel according to a mapping relationship; wherein, the mapping relationship is the mapping relationship between the first tunnel and the second tunnel; wherein in a case of downlink data transmission, the step of performing data transmission between the ASN GW and the RS through the first tunnel and the second tunnel comprises: the ASN GW encapsulating the downlink data into a first GRE/IP encapsulated packet and sending the first GRE/IP encapsulated packet to the BS through the first tunnel; the BS identifying information of the second tunnel according to the mapping relationship and the information of the first tunnel obtained by analyzing the first GRE/IP encapsulated packet, re-encapsulating payload into a second GRE/IP encapsulated packet, further encapsulating the second GRE/IP encapsulated packet into a relay MAC PDU, and sending the relay MAC PDU to the RS; wherein in a case of downlink data transmission, before encapsulating the second GRE/IP encapsulated packet into a relay MAC PDU and sending the relay MAC PDU to the RS, the method further comprises: the BS determining whether the destination MS of the downlink data is a MS governed by the BS or a MS under a RS governed by the BS, encapsulating the downlink data into a MAC PDU and sending the MAC PDU to the destination MS if the destination MS is a MS governed by the BS, and continuing the subsequent processing if the destination MS is a MS under a RS governed by the BS.