Patent ID: 9077503
Filing Date: 2015-07-07
Classification: H04B,H04J,H04L,H04W

Abstract:
1. An improved channel quality indicator method for determining and transmitting one or more Channel Quality Indicator Reference Signals from one or more subframes such that an associated user equipment can use the one or more Channel Quality Indicator Reference Signals to measure a Channel Quality Indicator, the subframes including first and second slots, each of the first and second slots including a plurality of symbols, and each of the first and second slots forming respectively a first resource block and a following second resource block within each of the one or more subframes, wherein the method comprises: generating the one or more Channel Quality Indicator Reference Signals; mapping the one or more Channel Quality Indicator-Reference Signals to the last symbol of the second slot of the one or more subframes; and transmitting the mapped one or more Channel Quality Indicator Reference Signals from a base station to a user equipment (UE), wherein the Channel Quality Indicator Reference Signals transmission avoids collision with a Cell-specific Reference Signal (CRS), a Dedicated Reference Signal (DRS), a Physical Broadcast CHannel (PBCH), or a synchronization signal due to i) the Channel Quality Indicator Reference Signal always being conveyed in the last symbol of the second slot of the second resource block conveying the CQI Reference Signal, and ii) each of said Cell-specific Reference Signal (CRS), Dedicated Reference Signal (DRS), said Physical Broadcast CHannel (PBCH), and said synchronization signal being located in another OFDM symbol in said second resource block conveying the CQI Reference Signal, where the another OFDM symbol of said resource block is a different symbol from the last OFDM symbol in the second slot of said second resource block such that the Channel Quality Indicator Reference Signal transmission and said Cell-specific Reference Signal (CRS), Dedicated Reference Signal (DRS), said Physical Broadcast CHannel (PBCH), and said synchronization signal are always located in different OFDM symbols in the same resource block that conveys the Channel Quality Indicator Reference Signal.