868results about How to "Reduce signaling overhead" patented technology

The invention provides a method for sending and detecting downlink control information, a base station carries the downlink control information in a physical downlink control signal channel, the physical downlink control signal channel is sent through a component carrier, wherein the base station carries the first type of downlink control information on the main component carrier and carries the third type of downlink control information on the first component carrier, the first type of downlink control information carries uplink and / or downlink scheduling information and / or uplink power control information of the component carrier in which the first type of downlink control information is located, the second type of downlink control information carries uplink and / or downlink scheduling information of one or a plurality of component carriers, and the third type of downlink control information carries indication information of the second type of downlink control information. A terminal detects the first type of downlink control information on the main component carrier and detects the third type of downlink control information on the first component carrier. The method has better scheduling flexibility, compatibility and error code performance, lower blind detection times and lower signaling cost.

The invention relates to a method for tracking locations of mobile terminals in a communication network. Further, the invention relates to a communication network and apparatuses therein capable of performing individual steps of the method according to different embodiments of the invention. To decrease the signaling load imposed by mobility related signaling the invention suggests to group mobile terminals in so called mobility groups and to reduce the signaling overhead by performing a location update on a per-mobility group basis. In one exemplary embodiment of the invention this is realized by only one of the mobile terminals in a mobility group sending a group location update on behalf of the group to trigger the location update for the mobility group. Alternatively, in another embodiment of the invention, a network operator trusted or controlled entity sends a group location update on behalf of the group to trigger the location update for the mobility group.

Disclosed is a method of signaling hopping locations selected by a scheduling entity using a frequency hopping pattern indicator for indicating hopping locations for at least two re-transmissions. The frequency hopping pattern is selected by the scheduling entity which may have knowledge of all or at least a plurality of scheduled reverse link transmissions or restrictions upon reverse link transmissions, thereby allowing reverse link re-transmissions to be scheduled in a manner compatible with other reverse link transmissions and restrictions. Overall signaling overhead associated with scheduling re-transmissions is reduced through the signaling of a single message which indicates hopping locations for at least two re-transmissions instead of two or more separate messages, wherein each of the two or more separate message indicates a hopping location for an individual re-transmission.