CHANNEL ESTIMATING APPARATUS, CHANNEL ESTIMATING METHOD, BASE STATION, AND COMMUNICATION SYSTEM
First Claim
1. A channel estimating apparatus comprising:
- a wireless communication interface; and
a processor configured forcontrolling the wireless communication interface to receive reference signal groups that are respectively transmitted from wireless communications units and that each include a reference signal that is allocated a common channel resource allocated to a reference signal in another reference signal group among the reference signal groups;
in accordance with a reference signal that is in a first reference signal group among the reference signal groups received by the wireless communication interface and that is allocated a unique channel resource not allocated to a reference signal in another reference signal group, first estimating a reference signal that is in the first reference signal group and allocated the common channel resource; and
in accordance with the reference signal estimated by the first estimating, second estimating a reference signal that is in a second reference signal group among the received reference signal groups and that is allocated the common channel resource.
1 Assignment
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Accused Products
Abstract
A channel estimating apparatus includes a receiver that receives reference signal groups that are respectively transmitted from wireless communications units and that each include a reference signal that is allocated a common channel resource allocated to a reference signal in another reference signal group; a first estimating unit that based on a reference signal that is in a first reference signal group among the received reference signal groups and that is allocated a unique channel resource not allocated to a reference signal in another reference signal group, estimates a reference signal that is in the first reference signal group and allocated the common channel resource; and a second estimating unit that based on the reference signal estimated by the first estimating unit, estimates a reference signal that is in a second reference signal group among the received reference signal groups and that is allocated the common channel resource.
5 Citations
9 Claims
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1. A channel estimating apparatus comprising:
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a wireless communication interface; and a processor configured for controlling the wireless communication interface to receive reference signal groups that are respectively transmitted from wireless communications units and that each include a reference signal that is allocated a common channel resource allocated to a reference signal in another reference signal group among the reference signal groups; in accordance with a reference signal that is in a first reference signal group among the reference signal groups received by the wireless communication interface and that is allocated a unique channel resource not allocated to a reference signal in another reference signal group, first estimating a reference signal that is in the first reference signal group and allocated the common channel resource; and in accordance with the reference signal estimated by the first estimating, second estimating a reference signal that is in a second reference signal group among the received reference signal groups and that is allocated the common channel resource. - View Dependent Claims (2, 3, 4)
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5. A base station comprising:
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a wireless communication interface; and a processor configured for controlling the wireless communication interface to transmit to a terminal apparatus, a first reference signal group that includes a reference signal that is allocated a common channel resource allocated to a reference signal in a second reference signal group transmitted to the terminal apparatus from another base station. - View Dependent Claims (6, 7, 8)
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9. A base station comprising:
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a first wireless communication interface; a second wireless communication interface; and a processor configured for controlling the first wireless communication interface to transmit a first reference signal group to a terminal apparatus, and controlling the second wireless communication interface to transmit to the terminal apparatus, a second reference signal group that includes a reference signal that is allocated a common channel resource allocated to a reference signal in the first reference signal group.
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Specification