Method for allocating wireless resources in a wireless access system, and apparatus therefor
The present invention relates to a method for allocating wireless resources in a wireless access system that supports an operation in an unlicensed band, as well as to an apparatus for the method. More particularly, a method for allocating wireless resources in a wireless access system that supports a television white space (TV WS) band comprises the steps of: allocating, to a terminal and from among TV WS bands, available frequency bands which are not used by a licensed device; if a receiving band of another device exists in a neighboring band of the available frequency bands, setting up a guard band in a portion of the band adjacent to the neighboring band from among the available frequency bands; allocating wireless resources to a terminal in a frequency band from among the available frequency bands, excluding the guard band; and receiving uplink data from the terminal through the wireless resources, wherein the guard band is determined using the allocation location of the wireless resources, the amount of wireless resources, and the transmission power of the terminal.
1. A method of allocating a radio resource in a wireless access system supporting a television white space (TVWS) band, the method performed by a base station and comprising:
assigning an available frequency band not used by a licensed device among a plurality of available frequency bands of the TVWS band to a user equipment;
if a reception band of a different device exists in a band adjacent to the assigned available frequency band, setting a guard band to a part of the band adjacent to the assigned available frequency band;
allocating the radio resource to the user equipment in the assigned available frequency band except the guard band;
receiving uplink data from the user equipment via the radio resource; and
receiving, from the user equipment or a network, information on whether the reception band of the different device exists in the band adjacent to the assigned available frequency band,
wherein the guard band is determined using an allocation position of the radio resource, an amount of the radio resource, and transmit power of the user equipment.
2. The method of claim 1 , wherein the information on whether the reception band of the different device exists in the band adjacent to the assigned available frequency band received from the user equipment indicates whether a power value measured for the band adjacent to the assigned available frequency band is within a predetermined range.
3. The method of claim 1 , further comprising determining whether the reception band of the different device exists in the band adjacent to the assigned available frequency band via usage information of the TVWS band shared by a different base station.
4. The method of claim 1 , wherein the guard band is configured in the part of the band adjacent to a prescribed one band among both bands adjacent to the assigned available frequency band.
5. The method of claim 1 , wherein a transmit power of the user equipment corresponds to maximum transmit power permitted to the user equipment.
6. A base station configured to allocate a radio resource in a wireless access system supporting a television white space (TVWS) band, the base station comprising:
a radio frequency (RF) unit configured to transmit and receive a radio signal; and
a processor operably coupled with the RF unit,
wherein if an available frequency band not used by a licensed band among a plurality of available frequency bands of the TVWS band is assigned to a user equipment and a reception band of a different device exists in a band adjacent to the assigned available frequency band, the processor is further configured to:
set a guard band to a part of the band adjacent to the assigned available frequency band,
allocate the radio resource to the user equipment in the assigned available frequency band except the guard band,
receive uplink data from the user equipment via the radio resource, and
receive, from the user equipment or a network, information on whether the reception band of the different device exists in the band adjacent to the assigned available frequency band,
wherein the guard band is determined by the processor using an allocation position of the radio resource, an amount of the radio resource, and transmit power of the user equipment.
7. The base station of the claim 6 , wherein the information on whether the reception band of the different device exists in the band adjacent to the assigned available frequency band received from the user equipment indicates whether a power value measured for the band adjacent to the assigned available frequency band is within a predetermined range.
8. The base station of claim 6 , wherein whether the reception band of the different device exists in the band adjacent to the assigned available frequency band is determined via usage information of the TVWS band shared by a different base station.
9. The base station of claim 6 , wherein the guard band is set to the part of the band adjacent to a prescribed one band only among both bands adjacent to the assigned available frequency band.
10. The base station of claim 6 , wherein a transmit power of the user equipment corresponds to maximum transmit power permitted to the user equipment.