Enabling coordinated multi-point reception
AssigneeTexas Instruments Incorporated
InventorsTarik Muharemovic, Zukang Shen, Anthony Edet Ekpenyong
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Abstract
This invention measures the propagation delay τ1 between the user equipment and a first cooperating unit and the propagation delay τ2 between the user equipment and a second cooperating unit. These propagation delays are used to compute a timing advance amount to the user equipment to enable coordinated multi-point reception. In a first embodiment one cooperating unit receives a function of the propagation delay, computes the timing advance amount and transmits a timing advance command to the user equipment. In a second embodiment a central unit performs these operations.
Claims26
1-9. (canceled)
A method of operating a base station, comprising:
- measuring a propagation delay τ1 between a user equipment and the base station;
- computing a function g(f(τ2), τ1) using a function f(τ2) of another delay τ2 and the propagation delay τ1;
- computing a timing advance amount for the user equipment from the computed function g(f(τ2), τ1);
- and
- transmitting a timing advance command having the computed timing advance amount to the user equipment.
A method of operating a transceiver, comprising:
- measuring a propagation delay τ1 between a first transceiver and a second transceiver;
- computing a function g(f(τ2), τ1) using a function f(τ2) of another delay τ2 and the propagation delay;
- computing a timing advance amount for the first transceiver from the computed function g(f(τ2), τ1);
- and
- transmitting a timing advance command having the computed timing advance amount to the first transceiver.
A method of operating a transceiver, comprising:
- receiving a timing advance command having a computed timing advance amount, the computed timing advance amount computed from a function g(f(τ2), τ1) computed using a function f(τ2) of a delay τ2 and a delay τ1;
- and
- operating the transceiver according to the timing advance command.
Dependencies are inferred from the claim text.