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US 8,576,823 B2Granted
Generating pilot sequence for reference signal
AssigneeNokia Corporation
InventorsKari Pajukoski, Esa Tiirola
Life of this patent
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Abstract
A network element may provide a plurality of user equipments with a dedicated pilot sequence for uplink reference signal transmission. A user equipment may, after receipt of a dedicated pilot sequence, spread the pilot sequences using a block spreading method.
Claims27
A method comprising:
- generating, by an apparatus, a dedicated pilot sequence;
- and
- transmitting, by the apparatus, on an uplink a reference signal comprising applying to the dedicated pilot sequence a combination of cyclic shift and a block spreading code, in which the combination of the cyclic shift and the block spreading code is allocated to the apparatus based on coordination among adjacent cells.
An apparatus comprising:
- a memory storing computer program instructions;
- and
- a processor;
- in which the memory with the computer program instructions is configured with the processor to cause the apparatus to:
- generate a dedicated pilot sequence;
- and
- transmit on an uplink a reference signal comprising applying to the dedicated pilot sequence a combination of a cyclic shift and a block spreading code, in which the combination of the cyclic shift and the block spreading code is allocated to the apparatus based on coordination among adjacent cells.
4 more elements
A non-transitory memory storing computer program instructions which, when executed by at least one processor, result in actions comprising:
- generating a dedicated pilot sequence;
- and
- transmitting on an uplink a reference signal comprising applying to the dedicated pilot sequence a combination of a cyclic shift and a block spreading code, in which the combination of the cyclic shift and the block spreading code is allocated to the apparatus based on coordination among adjacent cells.
A method comprising:
- coordinating among adjacent cells to achieve for each of a plurality of user equipment a unique combination of cyclic shift and block spreading code;
- and
- allocating to each of the plurality of user equipment which are operating in at least one of the adjacent cells a different one of the unique combinations of cyclic shift and block spreading code for reference signal transmissions.
An apparatus comprising:
- a memory storing computer program instructions;
- and
- a processor;
- in which the memory with the computer program instructions is configured with the processor to cause the apparatus to:
- coordinate among adjacent cells to achieve for each of a plurality of user equipment a unique combination of cyclic shift and block spreading code;
- and
- allocate to each of the plurality of user equipment which are operating in at least one of the adjacent cells a different one of the unique combinations of cyclic shift and block spreading code for reference signal transmissions.
4 more elements
A non-transitory memory storing computer program instructions which, when executed by at least one processor, result in actions comprising:
- coordinating among adjacent cells to achieve for each of a plurality of user equipment a unique combination of cyclic shift and block spreading code;
- and
- allocating to each of the plurality of user equipment which are operating in at least one of the adjacent cells a different one of the unique combinations of cyclic shift and block spreading code for reference signal transmissions.
An apparatus comprising:
- a memory storing computer program instructions;
- and
- a processor;
- in which the memory with the computer program instructions is configured with the processor to cause the apparatus to:
- provide each of a plurality of a user equipment in a communication system with a dedicated pilot sequence for reference signal transmission that is based on a block spreading method;
- coordinate among adjacent cells such that each user equipment is allocated a unique combination of shifted dedicated pilot sequence and block spreading code;
- and
- receive from at least some of the plurality of user equipment transmissions using the block spreading method and comprising the provided pilot sequences.
5 more elements
An apparatus comprising:
- a memory storing computer program instructions;
- and
- a processor;
- in which the memory with the computer program instructions is configured with the processor to cause the apparatus to:
- spread a dedicated pilot sequence in an uplink reference signal transmission using a block spreading method;
- wherein a different combination of shifted dedicated pilot sequence and block spreading code is used in the apparatus than is used by any other user equipment in any adjacent cell.
3 more elements
Dependencies are inferred from the claim text.