Patent ID: 8472335
Filing Date: 2013-06-25
Classification: H04B,H04W

Abstract:
1. A method for selecting a transmission technology for communications in a wide area mobile network which provides at least one available radio carrier for allocating traffic of coexisting Multiple Input Multiple Output (MIMO) User Equipments, High Speed Downlink Packet Access (HSDPA) User Equipments and non-High Speed Downlink Packet Access (non-HSDPA) User Equipments, said method comprising: checking whether the User Equipment is a MIMO User Equipment; if the User Equipment is a MIMO User Equipment and one single radio carrier is available, allocating the traffic of the User Equipment to the single radio carrier and selecting a Secondary Common Pilot Channel (S-CPICH) to provide all MIMO traffic with a diversity pilot and Virtual Antenna Mapping for transmit diversity; if the User Equipment is a MIMO User Equipment and a plurality of radio carriers is available, allocating the traffic of the User Equipment to one radio carrier to which all existing MIMO traffic are already allocated and periodically determining a number of User Equipments coexisting in the network, measuring radio condition parameters of the User Equipment and measuring an average transmission power load of each radio carrier, and otherwise, selecting a diversity CPICH which uses STTD to provide all existing MIMO traffic with a diversity pilot and if a plurality of radio carriers is available, further comprising: using STTD on only one radio carrier, allocating all existing MIMO traffic to said one radio carrier and allocating all existing non MIMO traffic to another radio carrier not using STTD.