A technique of associating each Serving Gateway (SGW) with a corresponding Packet Data Network (PDN) gateway (PGW) to provide a particular type of wireless service to mobile devices in the wireless communication network is discussed herein. In configurations, the technique includes co-locating a SGW with a corresponding PGW in the same, physical node of the wireless communication network to provide a first S/PGW pair. In configurations, the first co-located S/PGW pair may be dedicated to provide data services to mobile devices in the wireless communication network. The technique also includes co-locating another SGW with a corresponding PGW in the same, physical node of the wireless communication network that is different from the physical node that includes the first S/PGW pair to provide a second S/PGW pair. In configurations, the second co-located S/PGW pair may be dedicated to provide voice services to mobile devices in the wireless communication network.