An apparatus and method for gathering and reporting interference signal information between Relay Stations in a multi-hop relay Broadband Wireless Access communication system are provided. A reading unit reads a preceding image and a current image among a plurality of partially overlapping images, from a memory device, the preceding image and the current image containing a common element. A bag extends downwardly at the attachment angle from the top plenum to a distal end in an inflated position. If packet transmission is initiated, a routing area update may take place if the mobile is connected to a different wireless access system than in the previous packet transmission. The flange includes a rearwardly facing shoulder bearing against an outer surface of the block. Magnetic lines of the magnetic body together with earth poles produce a radiated magnetic field.