COMMUNICATION SYSTEM, BASE STATION APPARATUS, TERMINAL APPARATUS, AND COMMUNICATION METHOD
First Claim
1. A communication system, comprising:
- a terminal apparatus; and
primary and secondary base station apparatuses each providing one or more cells,wherein the primary base station apparatus includesa transmission unit configured to transmit communication conditions to the secondary base station apparatus, the communication conditions being used for signal transmission and reception processing in a coordinated communication mode where the primary and secondary base station apparatuses perform radio communications with the terminal apparatus in coordination with each other, anda radio communication unit configured to perform radio communications with the terminal apparatus using the communication conditions in the coordinated communication mode, andwherein the secondary base station apparatus includesa receiving unit configured to receive the communication conditions from the primary base station apparatus,a transition unit configured to, when the communication conditions are received from the primary base station apparatus, transition into the coordinated communication mode, anda radio communication unit configured to perform radio communications with the terminal apparatus using the communication conditions received from the primary base station apparatus in the coordinated communication mode.
1 Assignment
0 Petitions
Accused Products
Abstract
A communication system includes a terminal apparatus; and primary and secondary base station apparatuses each providing one or more cells. Further, the primary base station apparatus includes a transmission unit transmitting communication conditions to the secondary base station apparatus in a coordinated communication mode where the primary and secondary base station apparatuses perform radio communications with the terminal apparatus in coordination with each other, and a radio communication unit performing radio communications with the terminal apparatus using the communication conditions in the coordinated communication mode. Further, the secondary base station apparatus includes a receiving unit receiving the communication conditions from the primary base station apparatus, a transition unit transitioning, when the communication conditions are received from the primary base station apparatus, into the coordinated communication mode, and a radio communication unit performing radio communications with the terminal apparatus using the communication conditions.
31 Citations
8 Claims
-
1. A communication system, comprising:
-
a terminal apparatus; and primary and secondary base station apparatuses each providing one or more cells, wherein the primary base station apparatus includes a transmission unit configured to transmit communication conditions to the secondary base station apparatus, the communication conditions being used for signal transmission and reception processing in a coordinated communication mode where the primary and secondary base station apparatuses perform radio communications with the terminal apparatus in coordination with each other, and a radio communication unit configured to perform radio communications with the terminal apparatus using the communication conditions in the coordinated communication mode, and wherein the secondary base station apparatus includes a receiving unit configured to receive the communication conditions from the primary base station apparatus, a transition unit configured to, when the communication conditions are received from the primary base station apparatus, transition into the coordinated communication mode, and a radio communication unit configured to perform radio communications with the terminal apparatus using the communication conditions received from the primary base station apparatus in the coordinated communication mode. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A base station apparatus providing one or more cells and performing radio communications with a terminal apparatus, the base station apparatus comprising:
-
a transmission unit configured to, when the base station apparatus is to transition into a coordinated communication mode where the base station apparatus and another base station apparatus perform radio communications with the terminal apparatus in coordination with each other, transmit communication conditions to the other base station apparatus, the communication conditions being used for modulation and demodulation processes in the radio communications with the terminal apparatus, and a communication unit configured to communicate with the terminal apparatus by using the communication conditions in the coordinated communication mode. - View Dependent Claims (7)
-
-
8. A terminal apparatus performing radio communications with primary and secondary base station apparatuses each providing one or more cells, the terminal apparatus comprising:
-
a receiving unit configured to receive communication conditions from the primary base station apparatus, contents of the communication conditions being the same as those of communication conditions which are to be transmitted from the primary base station apparatus to the secondary base station apparatus, a transition unit configured to, when the communication conditions is received from the primary base station apparatus, transition into a coordinated communication mode to perform radio communications with the primary and secondary base station apparatuses, and a radio communication unit configured to perform radio communications with the primary and secondary base station apparatuses using the communication conditions received from the primary base station apparatus in the coordinated communication mode.
-
Specification