Presence indication in a wireless communication system
First Claim
1. A transmission method for use in a wireless communication system comprising at least one terminal and at least one base station controlling at least two transmission points which may each be controlled to broadcast a first signal, wherein:
- one of the transmission points broadcasts the first signal;
the terminal discovers said transmission point by receiving the first signal broadcast from said transmission point;
the terminal thereafter transmits a discovery indication in the form of a second signal which depends on at least one characteristic of the received first signal; and
the base station, in response to receiving the second signal from the terminal, enables a third signal including any one or more of a broadcast channel, a paging channel, a broadcast reference signal, and a synchronization sequence to be broadcast from said transmission point only when one or more terminals are present.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of the present invention provide a new way for a UE to autonomously indicate to the network from which transmission points (TPs) it is able to receive certain broadcast signals. As an example, by receiving in a broadcast signal in the form of a synchronization sequence, the physical identity of a particular TP, a UE infers when it should, if it wishes, send on an UL an indication of its ability to receive the broadcast signal from that TP—i.e., an indication of its presence in the coverage of the TP. The network is then able to take suitable action in response to this, such as adjusting network coverage, enabling or disabling other broadcast channels and controlling paging.
-
Citations
14 Claims
-
1. A transmission method for use in a wireless communication system comprising at least one terminal and at least one base station controlling at least two transmission points which may each be controlled to broadcast a first signal, wherein:
-
one of the transmission points broadcasts the first signal; the terminal discovers said transmission point by receiving the first signal broadcast from said transmission point; the terminal thereafter transmits a discovery indication in the form of a second signal which depends on at least one characteristic of the received first signal; and the base station, in response to receiving the second signal from the terminal, enables a third signal including any one or more of a broadcast channel, a paging channel, a broadcast reference signal, and a synchronization sequence to be broadcast from said transmission point only when one or more terminals are present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14)
-
-
12. A wireless communication system comprising at least one terminal and at least one base station controlling at least two transmission points which may each be controlled to broadcast a first signal, wherein;
-
one of the transmission points is configured to broadcast the first signal; the terminal is configured to discover said transmission point by receiving the first signal broadcast from said transmission point; the terminal is configured thereafter to transmit a discovery indication in the form of a second signal which depends on a least one characteristic of the received first signal; and the base station is configured, in response to receiving the second signal to control said transmission point to broadcast a third signal only when one or more terminals are present, the third signal including any one or more of a broadcast channel, a paging channel, a broadcast reference signal, and a synchronization sequence.
-
Specification