Apparatus and method for allocating sounding sequences in a broadband wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsLi Jing, Soon-Young Yoon, Keun-Chul Hwang, In-Seok Hwang, June Moon
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Abstract
A method and apparatus enhances sounding performance for a broadband wireless communication system of a multi-cell environment. A grouping part groups a plurality of sounding sequences to a plurality of sequence groups. A first determiner determines a correlation between the sequence groups. A second determiner determines a least interference relation between sectors in a cluster. An allocator allocates the sequence groups to the sectors based on the correlation between the sequence groups and the least interference relation between the sectors.
Claims20
A sounding sequence allocating method for a wireless communication system in a multi-cell environment, the method comprising:
- grouping a plurality of sounding sequences to a plurality of sequence groups;
- determining a correlation between the sequence groups;
- determining a least interference relation between a plurality of sectors in a cluster;
- and
- allocating the sequence groups to the sectors based on the correlation between the sequence groups and the least interference relation between the sectors.
A sounding sequence allocating method for a wireless communication system of a multi-cell environment, the method comprising:
- generating a plurality of base sounding sequences by multiplying a Zadoff-Chu sequence of a preset root index by a plurality of covering codes;
- and
- allocating the base sounding sequences to sectors in a cell, such that each base sounding sequence allocated in the cell has been generated from a different first covering code.
A sounding sequence allocating apparatus for a wireless communication system of a multi-cell environment, the apparatus comprising:
- a grouping part configured to group a plurality of sounding sequences to a plurality of sequence groups;
- a first determiner configured to determine a correlation between the sequence groups;
- a second determiner configured to determine a least interference relation between sectors in a cluster;
- and
- an allocator configured to allocate the sequence groups to the sectors based on the correlation between the sequence groups and the least interference relation between the sectors.
A sounding sequence allocating apparatus for a wireless communication system of a multi-cell environment, the apparatus comprising:
- a generator configured to generate a plurality of base sounding sequences by multiplying a Zadoff-Chu sequence of a preset root index by a plurality of covering codes;
- and
- an allocator configured to allocate the base sounding sequences to sectors in a cell such that each base sounding sequence allocated in the cell has been generated from a different first covering code.
A wireless communication system of a multi-cell environment comprising:
- a first base station belonging to a first cell of four cells constituting a cluster, the first base station configured to manage a first sector of four sectors with a least interference relation and control a first mobile station to perform sounding using sounding sequences of a first sequence group among four sequence groups that have correlation with respect to the first sector;
- a second base station belonging to a second cell of the four cells constituting the cluster, the second base station configured to manage a second sector of the four sectors with the least interference relation and control a second mobile station to perform sounding using sounding sequences of a second sequence group among the four sequence groups that have correlation with respect to the second sector;
- a third base station belonging to a third cell of the four cells constituting the cluster, the third base station configured to manage a third sector of the four sectors with the least interference relation and control a third mobile station to perform sounding using sounding sequences of a third sequence group among the four sequence groups that have correlation with respect to the third sector;
- and
- a fourth base station belonging to a fourth cell of the four cells constituting the cluster, the fourth base station configured to manage a fourth sector of the four sectors with the least interference relation and control a fourth mobile station to perform sounding using sounding sequences of a fourth sequence group among the four sequence groups that have correlation with respect to the fourth sector.
A wireless communication system of a multi-cell environment comprising:
- a first base station configured to control a first mobile station to perform sounding using sounding sequences generated from base sounding sequences which comprise first covering codes having different indexes with respect to sectors that constitute a cell of the first base station;
- and
- a second base station configured to control a second mobile station to perform sounding using the sounding sequences generated from a base sounding sequence comprising a first covering code having a different index from an index of a first covering code of a base sounding sequence of a first sector with respect to at least one sector of the second base station, the at least one sector adjacent to a first sector of the first base station,
- wherein the base sounding sequence is generated by multiplying a Zadoff-Chu sequence of a preset root index by a plurality of covering codes.
Dependencies are inferred from the claim text.