Patent ID: 8594048

Claim:
A method for supporting mobile station (MS) ranging, applied to a telecommunication system with non-transparent relay stations (RSs) as potential target RSs of an MS during a handover, comprising: determining public frame information of a public frame that is to be used for allocating dedicated initial ranging transmission opportunity information; carrying the determined public frame information in a dedicated ranging allocation message; obtaining channel quality indication provided by each potential target RS of the MS; and sending the dedicated ranging allocation message to the potential target RSs of the MS; wherein the dedicated initial ranging transmission opportunity information is used by the MS to perform ranging to a handover target RS in the potential target RSs; wherein the determined public frame information is based on effective time information about channel parameters in the channel quality indication and comprises one of the group consisting of: a difference between an ID of the public frame and an ID of a frame when the handover target RS receives the dedicated ranging allocation message; and lower bits of the public frame ID.