Method, system and device for switching a transmission time interval
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSairamesh Nammi, Mark Curran, Cagatay Konuskan, Gerardo Agni Medina Acosta
Life of this patent
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Abstract
A method and system for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values. A UE 100 transmitting a power report, where a control node 150 or a Base Station 110A evaluates the report and decides, based on the evaluation to order the UE to switch to a different TTI length. The order message comprises the number of TTIs after which a TTI switch has to occur, composed a.o. based on radio environment condition. The UE receives a TTI switch order message and replies with a single message to its serving BS with a message to switch the TTI in a synchronous way.
Claims16
A method in a User Equipment (UE) for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI lengths, the method comprising:
- transmitting a report comprising a measured received power;
- receiving a switching message indicating that the UE is to switch from using TTIs having a first length to using TTIs having a second length, wherein the switching message indicates a number of TTIs after which a switching of a current TTI length value to the different TTI length value is to occur;
- and,
- in response to said switching message, switching from using TTIs having the first length to using TTIs having the second length, in accordance with the indicated number of TTIs.
A method in a Base Station (BS) for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values, the method comprising:
- receiving, from a User Equipment (UE), a report comprising a measured received power;
- and
- evaluating the report and deciding, based on the evaluation, to order the UE to initialize a switching from a first TTI length to a second TTI length, by transmitting a switching message indicating that the UE is to switch from using TTIs having the first length to using TTIs having the second length, wherein the switching message indicates a number of TTIs after which a switching of a current TTI length value to the different TTI length value is to occur.
A User Equipment (UE) for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values, the UE being configured to deploy an actual- and a different- TTI length value, the UE comprising:
- a processing circuit comprising a processor configured to process program instructions and a memory arranged to store the program instructions and network parameters;
- and
- an interface circuit configured to communicate with a base station (BS);
- wherein the processing circuit is configured to:
- control the interface circuit to transmit a report comprising a measured received power;
- receive, via the interface circuit, a switching message indicating that the UE is to switch from using TTIs having a first length to using TTIs having a second length, wherein the switching message indicates a number of TTIs after which a switching of a current TTI length value to the different TTI length value is to occur;
- and,
- in response to said switching message, switch from using TTIs having the first length to using TTIs having the second length, in accordance with the indicated number of TTIs.
A Base Station (BS) for synchronized switching of a Transmission Time Interval (TTI) between at least two different TTI length values, the BS comprising:
- a processing circuit comprising a processor configured to process program instructions and a memory configured to store the program instructions and network parameters;
- and
- an interface circuit configured to communicate with one or more User Equipments (UEs);
- wherein the processing circuit is configured to:
- receive a report message from a UE, the report message comprising a measured received power;
- evaluate the report and decide, based on the evaluation, to order the UE to initialize a switching of an actual TTI length value to a different TTI length value, by transmitting a switching message indicating that the UE is to switch from using TTIs having the first length to using TTIs having the second length, wherein the switching message indicates a number of TTIs after which a switching of a current TTI length value to the different TTI length value is to occur.
Dependencies are inferred from the claim text.