Pi WiFi Power Saving Query

pi@raspberrypi ~ $ lsusb
Bus 001 Device 004: ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter
Bus 001 Device 003: ID 062a:4101 Creative Labs
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

pi@raspberrypi ~ $ lsmod
Module                  Size  Used by
ctr                     4001  1
ccm                     8278  1
arc4                    1972  2
rt2800usb              18922  0
rt2800lib              82001  1 rt2800usb
rt2x00usb              11926  1 rt2800usb
rt2x00lib              47841  3 rt2x00usb,rt2800lib,rt2800usb
mac80211              623136  3 rt2x00lib,rt2x00usb,rt2800lib
joydev                  9909  0
evdev                  11370  4
cfg80211              501663  2 mac80211,rt2x00lib
crc_ccitt               1620  1 rt2800lib
rfkill                 22491  2 cfg80211
bcm2835_gpiomem         3675  0
uio_pdrv_genirq         3690  0
uio                    10009  1 uio_pdrv_genirq
i2c_dev                 6737  0
i2c_bcm2708             6252  0
snd_bcm2835            22339  3
snd_pcm                92573  1 snd_bcm2835
snd_timer              23456  1 snd_pcm
snd                    68161  9 snd_bcm2835,snd_timer,snd_pcm
fuse                   91842  3
ipv6                  358511  24
pi@raspberrypi ~ $ ifconfig -a
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1104 (1.0 KiB)  TX bytes:1104 (1.0 KiB)

wlan0     Link encap:Ethernet  HWaddr 00:0f:60:06:74:86
          inet addr:192.168.1.206  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20f:60ff:fe06:7486/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:87475 errors:0 dropped:6 overruns:0 frame:0
          TX packets:4544 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:23880212 (22.7 MiB)  TX bytes:568291 (554.9 KiB)

pi@raspberrypi ~ $ cat /sys/module/2800usb/parameters/rtw_power_mgnt
cat: /sys/module/2800usb/parameters/rtw_power_mgnt: No such file or directory
pi@raspberrypi ~ $ cat /sys/module/rt2800usb/parameters/rtw_power_mgnt
cat: /sys/module/rt2800usb/parameters/rtw_power_mgnt: No such file or directory
pi@raspberrypi ~ $ cat /sys/module/rt2800/parameters/rtw_power_mgnt
cat: /sys/module/rt2800/parameters/rtw_power_mgnt: No such file or directory