System information storage and validity
AssigneeMediatek Inc.
InventorsPer Johan Mikael Johansson, Chia-Chun Hsu, Guan-Yu Lin
Life of this patent
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Abstract
A method of system information (SI) acquisition with reduced signaling overhead is proposed. To reduce SI broadcast overhead, the quantity of periodic SI broadcast and the frequency of on-demand SI acquisition need to be reduced. To reduce the frequency of on-demand SI acquisition, rather than always re-acquire SI when serving cell changes, UE is enabled to reuse stored SI information elements across different cells. More specifically, a novel concept of SI ID is introduced to be associated with an area that applies the same SI configuration. UE can reuse stored SI information elements if the stored SI information elements are valid based on the SI ID and validity check.
Claims20
A method, comprising:
- storing one or more sets of system information (SI) information elements by a user equipment (UE) in a mobile communication network, wherein each stored set of SI information elements is associated with a corresponding stored SI ID and one or more value tags, wherein SI ID values are associated with a public land mobile network (PLMN), and wherein an SI ID indicates an SI area within a corresponding PLMN area;
- receiving an applicable SI ID and one or more value tags associated with a set of required SI information elements from a serving entity;
- determining whether there is any stored set of SI information elements that is valid for the applicable SI ID;
- and
- applying a stored set of SI information elements when the stored set of SI information elements is determined to be valid for the applicable SI ID.
A user equipment (UE), comprising:
- memory that stores one or more sets of system information (SI) information elements in a mobile communication network, wherein each stored set of SI information elements is associated with a corresponding stored SI ID and one or more value tags, wherein SI ID values are associated with a public land mobile network (PLMN), and wherein an SI ID indicates an SI area within a corresponding PLMN area;
- a receiver that receives an applicable SI ID and one or more value tags associated with a set of required SI information elements from a serving entity;
- a system information (SI) verification circuit that determines whether there is any stored set of SI information elements that is valid for the applicable SI ID;
- and
- a configuration circuit that applies a stored set of SI information elements when the stored set of SI information elements is determined to be valid for the applicable SI ID.
A method, comprising:
- storing one or more sets of system information (SI) information elements by a user equipment (UE) in a mobile communication network, wherein each stored set of SI information elements is associated with a corresponding stored SI ID and one or more value tags;
- receiving an applicable SI ID and one or more value tags associated with a set of required SI information elements from a serving entity;
- determining whether there is any stored set of SI information elements that is valid for the applicable SI ID;
- and
- applying a stored set of SI information elements when the stored set of SI information elements is determined to be valid for the applicable SI ID, wherein the UE stores a first set of SI information element associated with a first SI ID, and wherein the UE stores a second set of SI information elements associated with a second SI ID.
Dependencies are inferred from the claim text.