An apparatus for wireless communication, comprising: a location determining unit, configured to determine a cell partition corresponding to a geographical location of a communication device, wherein each cell comprises a plurality of cell partitions; a pilot determining unit, configured to determine an uplink pilot sequence corresponding to the cell partition as an uplink pilot sequence of the communication device; a receiving unit, configured to receive information indicating the geographical location transmitted by the communication device; and a transmitting unit, configured to transmit indicating information of the uplink pilot sequence to the communication device via a dedicated control signaling, to allocate the uplink pilot sequence to the communication device; wherein adjacent cell partitions are corresponding to different uplink pilot sequences, the receiving unit is further configured to receive a signal carrying a first uplink pilot sequence, and the apparatus further comprises: a channel estimation unit, configured to perform, based on the signal carrying the first uplink pilot sequence, channel estimation on a communication device to which the first uplink pilot sequence is allocated, wherein the channel estimation unit performs, based on a geographical location of the communication device to which the first uplink pilot sequence is allocated, filtering during the channel estimation, to obtain a channel estimation result matching the communication device; wherein the channel estimation unit comprises: a coarse channel estimation module, configured to perform, based on the signal carrying the first uplink pilot sequence and the first uplink pilot sequence, coarse estimation on channel coefficients; and characterized by a spatial filtering module, configured to perform, based on the geographical location of the communication device to which the first uplink pilot sequence is allocated, filtering on the coarse estimation for the channel coefficients. a location determining unit, configured to determine a cell partition corresponding to a geographical location of a communication device, wherein each cell comprises a plurality of cell partitions; a pilot determining unit, configured to determine an uplink pilot sequence corresponding to the cell partition as an uplink pilot sequence of the communication device; a receiving unit, configured to receive information indicating the geographical location transmitted by the communication device; and a transmitting unit, configured to transmit indicating information of the uplink pilot sequence to the communication device via a dedicated control signaling, to allocate the uplink pilot sequence to the communication device; wherein adjacent cell partitions are corresponding to different uplink pilot sequences, the receiving unit is further configured to receive a signal carrying a first uplink pilot sequence, and the apparatus further comprises: a channel estimation unit, configured to perform, based on the signal carrying the first uplink pilot sequence, channel estimation on a communication device to which the first uplink pilot sequence is allocated, wherein the channel estimation unit performs, based on a geographical location of the communication device to which the first uplink pilot sequence is allocated, filtering during the channel estimation, to obtain a channel estimation result matching the communication device; wherein the channel estimation unit comprises: a coarse channel estimation module, configured to perform, based on the signal carrying the first uplink pilot sequence and the first uplink pilot sequence, coarse estimation on channel coefficients; and characterized by a spatial filtering module, configured to perform, based on the geographical location of the communication device to which the first uplink pilot sequence is allocated, filtering on the coarse estimation for the channel coefficients. a channel estimation unit, configured to perform, based on the signal carrying the first uplink pilot sequence, channel estimation on a communication device to which the first uplink pilot sequence is allocated, wherein the channel estimation unit performs, based on a geographical location of the communication device to which the first uplink pilot sequence is allocated, filtering during the channel estimation, to obtain a channel estimation result matching the communication device; wherein the channel estimation unit comprises: a coarse channel estimation module, configured to perform, based on the signal carrying the first uplink pilot sequence and the first uplink pilot sequence, coarse estimation on channel coefficients; and characterized by a spatial filtering module, configured to perform, based on the geographical location of the communication device to which the first uplink pilot sequence is allocated, filtering on the coarse estimation for the channel coefficients. a coarse channel estimation module, configured to perform, based on the signal carrying the first uplink pilot sequence and the first uplink pilot sequence, coarse estimation on channel coefficients; and characterized by a spatial filtering module, configured to perform, based on the geographical location of the communication device to which the first uplink pilot sequence is allocated, filtering on the coarse estimation for the channel coefficients.