WIFI direct settings

Hi All,

We are using WL1271 module and configured as wifi direct, and we have following questions.

Other then the antenna tx power what are the other factors which will affect the wifi range..?

Is it possible to change the bite rate and modulations settings at runtime ?

-log-

Cell 02 - Address: 01:23:45:67:89:10
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=53/70  Signal level=-57 dBm
                    Encryption key:on
                    ESSID:"DIRECT-WIFI"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000000280a0a2
                    Extra: Last beacon: 4200ms ago
                    IE: Unknown: 00094449524543542D4653
                    IE: Unknown: 01088C129824B048606C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD2F0050F204104A00011010440001021049000600372A000120101100075065742D696D781054000800010050F2040001

Regards,

Manoj