Patent ID: 8494545
Filing Date: 2013-07-23
Classification: H04W

Abstract:
1. A method for acquiring load information, comprising: before a handover from a Universal Mobile Telecommunication System Terrestrial Radio Access Network (UTRAN) to an Evolved UTRAN (E-UTRAN) is performed, sending, by a source Radio Network Controller (RNC) to which a source cell belongs, through a core network, a first DIRECT INFORMATION TRANSFER message to a target access controller to which a target cell belongs, so that a first MME DIRECT INFORMATION TRANSFER message is sent from the target access controller to a target evolved NodeB (eNB) to which the target cell belongs, wherein the target access controller comprises a Serving GPRS Support Node (SGSN) or a Mobile Switching Center (MSC); and receiving, by the source RNC, a second DIRECT INFORMATION TRANSFER message from the SGSN or the MSC, wherein the second DIRECT INFORMATION TRANSFER message is returned by the SGSN or the MSC according to an eNB DIRECT INFORMATION TRANSFER message returned by the target eNB, wherein the first MME DIRECT INFORMATION TRANSFER message and the first DIRECT INFORMATION TRANSFER message carry a first Inter-System Information Transfer Type Information Element (IE), wherein the first Inter-System Information Transfer Type IE carries a cell load reporting request of the target cell and a first RAN Information Management (RIM) Transfer IE which includes a load information IE of the source cell, wherein the eNB DIRECT INFORMATION TRANSFER message and the second DIRECT INFORMATION TRANSFER message carry a second Inter-System Information Transfer Type IE that carries a second RIM Transfer IE, wherein the second RIM Transfer IE carries a load information IE of the target cell.