Patent ID: 7808964

Claim:
A method, comprising: defining by a mobile station in a service based mobile communication system an uplink signal having a symbol rate according to a modified dual symbol rate standard, wherein the symbol rate according to the modified dual symbol rate standard is smaller than a symbol rate according to a dual symbol rate standard of 541,666.7 symbols per second for providing a smaller bandwidth than when using said dual symbol rate standard, and exceeds by a predetermined amount a symbol rate according to a symbol rate standard of an uplink speech service of 270,833.3 symbols per second in said mobile communication system for providing the same as or a higher number of bits per an original symbol period than said uplink speech service; and sending said uplink signal by said mobile station to a network element, wherein said uplink signal has a symbol rate according to said modified dual symbol rate of 325,000 symbols per second wherein said bandwidth at half power substantially equals 325 kHz.