Sharing frequencies in an ofdm-based wireless communication system

A computer program product for sharing frequencies in a long term evolution (LTE) wireless communication system, the computer program product comprising:

• a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
• detecting an interference signal in the radio frequency band;
• generating a bitmap comprising the interference indication information, wherein the bit map comprises a mapping between a plurality of sub-bands in the radio frequency band and a plurality of bits, wherein each bit in the plurality of bits represents a sub-band in the plurality of sub-bands, and wherein each bit is associated with a value indicating one of a presence of an interference on the sub-band and an absence of an interference signal on the sub-band;
• setting, based upon the interference signal, interference indication information in a physical broadcast channel header (PBCH) of a downlink frame to be sent to a mobile device, the interference indication information indicating a frequency range that is occupied by the interference signal in the radio frequency band, wherein the setting further comprises
• adding the value associated with each of the plurality of bits to a corresponding bit in the PBCH;
• and
• sending the downlink frame to the mobile device, such that the mobile device may, based upon the interference indication information, avoid the frequency range where the interference signal is located.

A computer program product sharing frequencies in a long term evolution (LTE) wireless communication system, wherein the LTE wireless communication system comprises a base station and a mobile device that work in a radio frequency band, the computer program product comprising:

• a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
• detecting, by the base station, an interference signal in the radio frequency band;
• generating, by the base station and based on the detecting, a bitmap comprising a set of interference indication information;
• setting by the base station, based upon the interference signal, the set of interference indication information in a physical downlink control channel (PDCCH) header of a downlink frame to be sent to the mobile device, the interference indication information indicating a frequency range that is occupied by the interference signal in the radio frequency band, wherein the setting further comprises
• identifying a corresponding bit in the PDCCH header for each of the plurality of bits in the bitmap, where each of the corresponding bits in the PDCCH header is an unassigned reserved bit;
• and
• adding, based on the identifying, the value associated with each of the plurality of bits to the corresponding bit identified in the PDCCH header.