Mobile terminated access load control
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsOlof Liberg, Andreas Höglund
Life of this patent
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Abstract
A method is performed by a wireless device for performing a random access. In response to a received paging transmission, and when certain conditions are met, the wireless device randomly selects a random access resource from a plurality of available random access resources. The available random access resources may be spread in time, or in frequency, or in time and frequency. The wireless device then transmits a random access signal on the selected random access resource.
Claims19
A method performed by a wireless device for performing a random access, the method comprising:
- in response to a received paging transmission, randomly selecting one random access resource from a plurality of available random access resources that are spread over a time interval;
- after a random time within the time interval, transmitting a random access signal on the selected random access resource;
- and
- if it is determined that a number of wireless devices that have received the paging transmission exceeds a threshold number, randomly selecting one random access resource from the plurality of available random access resources that are spread over the time interval.
A method performed by a base station for configuring a random access by a responding wireless device, the method triggering the responding wireless device to perform a random-access procedure, the method performed by the base station comprising:
- transmitting a paging transmission to wireless devices within the base station's coverage area and, if a number of wireless devices that receive the paging transmission exceeds a threshold number, the paging transmission triggering the responding wireless device to randomly select one random access resource from a plurality of available random access resources spread within a time interval and transmit a random access signal on the selected random access resource after a waiting a random time within the time interval;
- and
- receiving the random access signal from the responding wireless device on the selected random access resource after the random time.
A wireless device for performing a random access, the wireless device configured to:
- in response to a received paging transmission, randomly select one random access resource from a plurality of available random access resources that are spread over a time interval;
- after a random time within the time interval, transmit a random access signal on the selected random access resource;
- and
- if it is determined that a number of wireless devices that have received the paging transmission exceeds a threshold number, randomly selecting one random access resource from the plurality of available random access resources that are spread over the time interval.
A base station configured to perform a random-access method by:
- transmitting a paging transmission to wireless devices within the base station's coverage area and, if a number of wireless devices that receive the paging transmission exceeds a threshold number, the paging transmission triggering the responding wireless device to randomly select one random access resource from a plurality of available random access resources spread within a time interval and transmit a random access signal on the selected random access resource after a waiting a random time within the time interval;
- and
- receiving the random access signal from the responding wireless device on the selected random access resource after the random time.
Dependencies are inferred from the claim text.