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US 11,082,967 B2Granted
Compressed system information for link budget limited UEs in a radio access network
AssigneeApple Inc.
InventorsTarik Tabet, Awais M. Hussain, Samy Khay-Ibbat, Sarma V. Vangala, Rafael L. Rivera-Barreto
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Abstract
Techniques are disclosed relating to broadcasting and receiving system information in a radio access network (RAN). In some embodiment, a base station is configured to broadcast different sets of first system information blocks (SIBs) for different classes of user equipment devices (e.g., traditional UEs and UEs having a limited link budget). Different classes of UEs may use the different sets of SIBs to initiate communications with the base station.
Claims21
An apparatus, comprising:
- one or more processors configured to, via a base station, within a first cell of a cellular network:
- broadcast a first set of system information blocks (SIBs) including a first SIB type 1 and first SIB type 2, wherein the first SIB type 1 includes scheduling information for other SIBs in the first set of SIBs including the first SIB type 2, and wherein the first SIB type 1 is transmitted periodically during a time interval according to a fixed schedule;
- broadcast a second set of SIBs including a second, different SIB type 1 and second, different SIB type 2, wherein the second SIB type 1 includes
- scheduling information for other SIBs in the second set of SIBs including the second SIB type 2 and wherein the second set of SIBs are usable by a class of user equipment devices (UEs) having a limited link budget, wherein a set of fields of the second SIB type 1 is at least partially different than a set of fields of the first SIB type 1;
- and
- communicate with first and second UEs, wherein initial communication with a first UE that is not in the class of UEs is based on the first set of SIBs and
- initial communication with the second UE that is in the class of UEs is based on the second set of SIBs.
4 more elements
An apparatus, comprising:
- one or more processors configured to:
- refrain from decoding a first set of system information blocks (SIBs) transmitted by a base station, within a first cell of a cellular network, including a first SIB type 1 and first SIB type 2, wherein the first SIB type 1 includes scheduling information for other SIBs in the first set of SIBs including the first SIB type 2, and wherein the first SIB type 1 is transmitted periodically during a time interval according to a fixed schedule;
- decode a second set of SIBs transmitted by the base station, within the first cell of a cellular network, including a second, different SIB type 1 and second, different SIB type 2, wherein the second SIB type 1 includes scheduling information for other SIBs in the second set of SIBs including the second SIB type 2 and wherein the second set of SIBs are usable by a class of user equipment devices (UEs) having a limited link budget, wherein a set of fields of the second SIB type 1 is at least partially different than a set of fields of the first SIB type 1;
- and
- initiate communication with the base station based on information specified by the decoded second set of SIBs.
2 more elements
A method, comprising:
- broadcasting, by a base station within a first cell of a cellular network, a first set of system information blocks (SIBs) including a first SIB type 1 and first SIB type 2, wherein the first SIB type 1 includes scheduling information for other SIBs in the first set of SIBs including the first SIB type 2, and wherein the first SIB type 1 is transmitted periodically during a time interval according to a fixed schedule;
- broadcasting, by the base station within the first cell of a cellular network, a second set of SIBs including a second, different SIB type 1 and second, different SIB type 2, wherein the second SIB type 1 includes scheduling information for other SIBs in the second set of SIBs including the second SIB type 2 and wherein the second set of SIBs are usable by a class of user equipment devices (UEs) having a limited link budget, wherein a set of fields of the second SIB type 1 is at least partially different than a set of fields of the first SIB type 1;
- and
- communicating, by the base station within the first cell of a cellular network, with first and second UEs, wherein initial communication with a first UE that is not in the class of UEs is based on the first set of SIBs and initial communication with the second UE that is in the class of UEs is based on the second set of SIBs.
1 more element
Dependencies are inferred from the claim text.