Method for scheduling uplink transmission in a wireless communication system and relevant devices

A base station device for a relay-based wireless communication system, comprising:

• estimating means for estimating equivalent uplink channels of respective users whose uplink transmission is performed via a same relay station;
• calculating means for calculating orthogonality between the equivalent channels of said users;
• selecting means for selecting a combination of virtual multiple input multiple output users from said users, wherein the equivalent channels of the users in said combination of virtual multiple input multiple output users is conformable to the requirement of orthogonality;
• and
• scheduling means for scheduling the respective users in said combination of virtual multiple input multiple output users to perform uplink transmission cooperatively with a same time or frequency resource.

A relay station device, comprising:

• uplink receiving means for receiving uplink transmission from a plurality of users;
• pre-encoding means for performing pre-encoding processing to uplink transmission of the plurality of users with respective pre-encoding mechanism in a pre-encoding mechanism set, so as to change equivalent uplink channels of the users;
• and
• uplink transmitting means for transmitting said pre-encoded uplink transmission to a base station.