System information block optimization for multi-radio access technology

Abstract

In some example embodiments, there may be provided a method, comprising determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1, obtaining the at least one delta-SIB associated with RAT1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access Technology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

Description

[0001] System Information Block Optimization for Multi-Radio Access Technology

[0002] FIELD

[0003] Various example embodiments relate to the field of wireless communication and, in particular to Multi-Radio Access Technology (Multi-RAT) and / or System Information Block (SIB) Optimization for Multi-RAT.

[0004] BACKGROUND

[0005] In the field of wireless communication, Multi-RAT refers to the use of multiple radio access technologies in a wireless network. This enables better flexibility, capacity, and coverage for users and allows for seamless connectivity across different network generations, such as 4G, 5G, 6g and Wi-Fi. In Multi-RAT networks, the node of a first Radio Access Technology (RAT1) and the node of a second Ratio Access Technology (RAT2) may share a same spectrum and / or, in particular a same, one or more carrier(s), e.g. to adapt, in particular dynamically, to traffic requirements. Multi-RAT Spectrum Sharing (MRSS) may be regarded as an important feature for the migration to higher Generation Networks, such as for example a sixth Generation Network (6G) and / or for enabling a, in particular smooth, transition, e.g. to allow flexible and / or dynamic spectrum sharing between the nodes within the MRSS framework.

[0006] SUMMARY

[0007] According to some aspects, there is provided the subject matter of the independent claims. Some further aspects, advantages and / or features are defined in the dependent claims, the description and / or the accompanying drawings.

[0008] In a first example aspect, there may be provided an apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , monitoring for the at least one delta-SIB associated with RAT1 based on the determined scheduling information, and merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with a second Radio Access Technology (RAT2).

[0009] In an example embodiment, which may be referred to as a first example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect described herein, wherein the indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT1 .

[0010] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information of the at least one delta-SIB associated with RAT1.

[0011] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or the first example embodiment of the first example aspect described herein, wherein the indication is an implicit indication indicative of the scheduling information of the at least one delta-SIB associated with RAT1 , wherein the implicit indication is derivable from at least one of:

[0012] - a pattern,

[0013] - a periodicity, or

[0014] - an offset of the at least one broadcasting resource.

[0015] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one delta-System Information Block (SIB) associated with RAT1 includes at least one of: - at least one transmission time, or

[0016] - at least one frequency resource.

[0017] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one broadcasting resource is at least one of:

[0018] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0019] - at least one Physical Broadcast Channel (PBCH).

[0020] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0021] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0022] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0023] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0024] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0025] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is derived from at least one SIB associated with RAT2.

[0026] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the indication from the node of RAT1 is received before reception of at least one of:

[0027] - the delta-SIB associated with RAT1 , or

[0028] - the SIB associated with RAT2.

[0029] In an example embodiment, which may be referred to as a second example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: determining, based at least in part on a further indication, scheduling information of the at least one SIB associated with RAT2, and monitoring for the at least one SIB associated with RAT2 based on the determined scheduling information.

[0030] In an example embodiment, which may be referred to as a third example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect and / or the second example embodiment of the first example aspect described herein, wherein a time frame for monitoring the at least one delta-SIB associated with RAT1 and a time frame for monitoring for at least one SIB associated with RAT2 are at least partially aligned.

[0031] In an example embodiment, which may be referred to as a fourth example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect and / or any one of the second example embodiment of the first example aspect and / or the third example embodiment of the first example aspect described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: monitoring for the at least one delta-SIB associated with RAT1 and for the at least one SIB associated with RAT2 within a same time frame.

[0032] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or the fourth example embodiment of the first example aspect described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: avoiding entering an idle state during the same time frame.

[0033] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0034] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT 1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

[0035] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the apparatus is a User equipment (UE) or wherein the apparatus is comprised in a UE.

[0036] Furthermore, in particular further according to the first example aspect, there may be provided an apparatus, comprising means for: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , monitoring for the at least one delta-SIB associated with RAT1 based on the determined scheduling information, and merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with a second Radio Access Technology (RAT2).

[0037] In an example embodiment, which may be referred to as a first example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect described herein, wherein the indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT1.

[0038] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information of the at least one delta-SIB associated with RAT1.

[0039] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or the first example embodiment of the first example aspect described herein, wherein the indication is an implicit indication indicative of the scheduling information of the at least one delta-SIB associated with RAT1 , wherein the implicit indication is derivable from at least one of:

[0040] - a pattern,

[0041] - a periodicity, or

[0042] - an offset of the at least one broadcasting resource. In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one delta-System Information Block (SIB) associated with RAT1 includes at least one of:

[0043] - at least one transmission time, or

[0044] - at least one frequency resource.

[0045] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one broadcasting resource is at least one of:

[0046] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0047] - at least one Physical Broadcast Channel (PBCH).

[0048] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the means are configured for: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0049] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0050] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2. In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0051] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT 1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0052] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is derived from at least one SIB associated with RAT2.

[0053] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the indication from the node of RAT1 is received before reception of at least one of:

[0054] - the delta-SIB associated with RAT1 , or

[0055] - the SIB associated with RAT2.

[0056] In an example embodiment, which may be referred to as a second example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the means are configured for: determining, based at least in part on a further indication, scheduling information of the at least one SIB associated with RAT2, and monitoring for the at least one SIB associated with RAT2 based on the determined scheduling information.

[0057] In an example embodiment, which may be referred to as a third example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect and / or the second example embodiment of the first example aspect described herein, wherein a time frame for monitoring the at least one delta-SIB associated with RAT1 and a time frame for monitoring for at least one SIB associated with RAT2 are at least partially aligned.

[0058] In an example embodiment, which may be referred to as a fourth example embodiment of the first example aspect, there is provided an apparatus, in particular according to the first example aspect and / or any one of the second example embodiment of the first example aspect and / or the third example embodiment of the first example aspect described herein, wherein the means are configured for: monitoring for the at least one delta-SIB associated with RAT1 and for the at least one SIB associated with RAT2 within a same time frame.

[0059] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or the fourth example embodiment of the first example aspect described herein, wherein the means are configured for: avoiding entering an idle state during the same time frame.

[0060] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0061] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT 1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

[0062] In an example embodiment, there is provided an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, wherein the apparatus is a User equipment (UE) or wherein the apparatus is comprised in a UE. In a second example aspect, there may be provided a method, comprising: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , monitoring for the at least one delta-SIB associated with RAT1 based on the determined scheduling information, and merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with a second Radio Access Technology (RAT2).

[0063] In an example embodiment, which may be referred to as a first example embodiment of the second example aspect, there is provided a method, in particular according to the second example aspect described herein, wherein the indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT1.

[0064] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information of the at least one delta-SIB associated with RAT1.

[0065] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or the first example embodiment of the second example aspect described herein, wherein the indication is an implicit indication indicative of the scheduling information of the at least one delta-SIB associated with RAT1 , wherein the implicit indication is derivable from at least one of:

[0066] - a pattern,

[0067] - a periodicity, or

[0068] - an offset of the at least one broadcasting resource.

[0069] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one delta-System Information Block (SIB) associated with RAT1 includes at least one of:

[0070] - at least one transmission time, or

[0071] - at least one frequency resource.

[0072] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the at least one broadcasting resource is at least one of:

[0073] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0074] - at least one Physical Broadcast Channel (PBCH).

[0075] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the method comprises: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0076] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0077] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0078] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1- specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0079] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0080] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is derived from at least one SIB associated with RAT2.

[0081] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the indication from the node of RAT1 is received before reception of at least one of:

[0082] - the delta-SIB associated with RAT1 , or

[0083] - the SIB associated with RAT2.

[0084] In an example embodiment, which may be referred to as a second example embodiment of the second example aspect, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the method comprises: determining, based at least in part on a further indication, scheduling information of the at least one SIB associated with RAT2, and monitoring for the at least one SIB associated with RAT2 based on the determined scheduling information.

[0085] In an example embodiment, which may be referred to as a third example embodiment of the second example aspect, there is provided a method, in particular according to the second example aspect and / or the second example embodiment of the second example aspect described herein, wherein a time frame for monitoring the at least one delta-SIB associated with RAT1 and a time frame for monitoring for at least one SIB associated with RAT2 are at least partially aligned.

[0086] In an example embodiment, which may be referred to as a fourth example embodiment of the second example aspect, there is provided a method, in particular according to the second example aspect and / or any one of the second example embodiment of the second example aspect and / or the third example embodiment of the second example aspect described herein, wherein the method comprises: monitoring for the at least one delta-SIB associated with RAT1 and for the at least one SIB associated with RAT2 within a same time frame.

[0087] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or the fourth example embodiment of the second example aspect described herein, wherein the method comprises: avoiding entering an idle state during the same time frame.

[0088] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0089] In an example embodiment, there is provided a method, in particular according to the second example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT1 and the node of RAT2 are part of a Multi- RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

[0090] In a third example aspect, there may be provided a non-transitory computer readable storage medium comprising program instructions that, when executed by an apparatus, in particular according to the first example aspect and / or any one of the associated example embodiments described herein, causes operations comprising: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , monitoring for the at least one delta-SIB associated with RAT1 based on the determined scheduling information, and merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with a second Radio Access Technology (RAT2).

[0091] The third example aspect may further comprise one or more steps and / or features of the method and / or any one of the associated example embodiments recited in the second example aspect.

[0092] In a fourth example aspect, there may be provided an apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , obtaining the at least one delta-SIB associated with RAT 1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access T echnology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

[0093] In an example embodiment, which may be referred to as a first example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect, wherein the at least one delta-SIB associated with RAT1 is indicative of scheduling information of the at least one SIB associated with RAT2.

[0094] In an example embodiment, which may be referred to as a second example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one SIB associated with RAT2 includes at least one of:

[0095] - at least one transmission time, or

[0096] - at least one frequency resource. In an example embodiment, which may be referred to as a third example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the first example embodiment of the fourth example aspect and / or the second example embodiment of the fourth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 includes at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0097] In an example embodiment, which may be referred to as a fourth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or the third example embodiment of the fourth example aspect described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: retrieving the scheduling information for the at least one SIB associated with RAT2 based on the at least one further indication.

[0098] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the third example embodiment of the fourth example aspect and / or the fourth example embodiment of the fourth example aspect described herein, wherein the at least one further indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information for the at least one SIB associated with RAT2.

[0099] In an example embodiment, which may be referred to as a fifth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 lacks scheduling information for the at least one SIB associated with RAT2.

[0100] In an example embodiment, which may be referred to as a sixth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or the fifth example embodiment of the fourth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 lacks at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0101] In an example embodiment, which may be referred to as a seventh example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the fifth example embodiment of the fourth example aspect or the sixth example embodiment of the fourth example aspect described herein, wherein an absence of scheduling information for the at least one SIB associated with RAT2 indicates to initiate monitoring for a Master Information Block (MIB) associated with RAT2.

[0102] In an example embodiment, which may be referred to as a eighth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the fifth example embodiment of the fourth example aspect, the sixth example embodiment of the fourth example aspect or the seventh example embodiment of the fourth example aspect described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: initiating monitoring for at least one MIB associated with RAT2 based on determining that the at least one delta-SIB associated with RAT1 lacks at least one of:

[0103] - scheduling information for the at least one SIB associated with RAT2, or

[0104] - at least one further indication for the at least one SIB associated with RAT2.

[0105] In an example embodiment, which may be referred to as a ninth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the seventh example embodiment of the fourth example aspect or the eighth example embodiment of the fourth example aspect described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: deriving the scheduling information for the at least one SIB associated with RAT2 based on the at least one MIB associated with RAT2. In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the seventh example embodiment of the fourth example aspect, the eighth example embodiment of the fourth example aspect or the ninth example embodiment of the fourth example aspect described herein, wherein the at least one MIB associated with RAT2 includes an explicit indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0106] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the seventh example embodiment of the fourth example aspect, the eighth example embodiment of the fourth example aspect or the ninth example embodiment of the fourth example aspect described herein, wherein the at least one MIB associated with RAT2 includes an implicit indication including data for deriving the scheduling information for the at least one SIB associated with RAT2.

[0107] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0108] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0109] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0110] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data. In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

[0111] In an example embodiment, which may be referred to as a tenth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the indication is included in at least one broadcasting resource transmitted by the node of RAT 1.

[0112] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or the tenth example embodiment of the fourth example aspect described herein, wherein the at least one broadcasting resource is at least one of:

[0113] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0114] - at least one Physical Broadcast Channel (PBCH).

[0115] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0116] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0117] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT 1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

[0118] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the apparatus is a User equipment (UE) or wherein the apparatus is comprised in a UE.

[0119] Furthermore, in particular further according to the fourth example aspect, there may be provided an apparatus, comprising means for: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , obtaining the at least one delta-SIB associated with RAT 1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access T echnology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

[0120] In an example embodiment, which may be referred to as a first example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect, wherein the at least one delta-SIB associated with RAT1 is indicative of scheduling information of the at least one SIB associated with RAT2.

[0121] In an example embodiment, which may be referred to as a second example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one SIB associated with RAT2 includes at least one of: - at least one transmission time, or

[0122] - at least one frequency resource.

[0123] In an example embodiment, which may be referred to as a third example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the first example embodiment of the fourth example aspect and / or the second example embodiment of the fourth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 includes at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0124] In an example embodiment, which may be referred to as a fourth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or the third example embodiment of the fourth example aspect described herein, wherein the means are configured for: retrieving the scheduling information for the at least one SIB associated with RAT2 based on the at least one further indication.

[0125] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the third example embodiment of the fourth example aspect and / or the fourth example embodiment of the fourth example aspect described herein, wherein the at least one further indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information for the at least one SIB associated with RAT2.

[0126] In an example embodiment, which may be referred to as a fifth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 lacks scheduling information for the at least one SIB associated with RAT2.

[0127] In an example embodiment, which may be referred to as a sixth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or the fifth example embodiment of the fourth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 lacks at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0128] In an example embodiment, which may be referred to as a seventh example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the fifth example embodiment of the fourth example aspect or the sixth example embodiment of the fourth example aspect described herein, wherein an absence of scheduling information for the at least one SIB associated with RAT2 indicates to initiate monitoring for a Master Information Block (MIB) associated with RAT2.

[0129] In an example embodiment, which may be referred to as a eighth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the fifth example embodiment of the fourth example aspect, the sixth example embodiment of the fourth example aspect or the seventh example embodiment of the fourth example aspect described herein, wherein the means are configured for: initiating monitoring for at least one MIB associated with RAT2 based on determining that the at least one delta-SIB associated with RAT1 lacks at least one of:

[0130] - scheduling information for the at least one SIB associated with RAT2, or

[0131] - at least one further indication for the at least one SIB associated with RAT2.

[0132] In an example embodiment, which may be referred to as a ninth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the seventh example embodiment of the fourth example aspect or the eighth example embodiment of the fourth example aspect described herein, wherein the means are configured for: deriving the scheduling information for the at least one SIB associated with RAT2 based on the at least one MIB associated with RAT2.

[0133] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the seventh example embodiment of the fourth example aspect, the eighth example embodiment of the fourth example aspect or the ninth example embodiment of the fourth example aspect described herein, wherein the at least one MIB associated with RAT2 includes an explicit indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0134] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the seventh example embodiment of the fourth example aspect, the eighth example embodiment of the fourth example aspect or the ninth example embodiment of the fourth example aspect described herein, wherein the at least one MIB associated with RAT2 includes an implicit indication including data for deriving the scheduling information for the at least one SIB associated with RAT2.

[0135] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0136] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0137] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0138] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT 1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0139] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the means are configured for: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

[0140] In an example embodiment, which may be referred to as a tenth example embodiment of the fourth example aspect, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the indication is included in at least one broadcasting resource transmitted by the node of RAT 1.

[0141] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or the tenth example embodiment of the fourth example aspect described herein, wherein the at least one broadcasting resource is at least one of:

[0142] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0143] - at least one Physical Broadcast Channel (PBCH).

[0144] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the means are configured for: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0145] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0146] In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT 1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum. In an example embodiment, there is provided an apparatus, in particular according to the fourth example aspect and / or any one of the associated example embodiments described herein, wherein the apparatus is a User equipment (UE) or wherein the apparatus is comprised in a UE.

[0147] In a fifth example aspect, there may be provided a method, comprising: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , obtaining the at least one delta-SIB associated with RAT 1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access T echnology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

[0148] In an example embodiment, which may be referred to as a first example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect, wherein the at least one delta-SIB associated with RAT1 is indicative of scheduling information of the at least one SIB associated with RAT2.

[0149] In an example embodiment, which may be referred to as a second example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one SIB associated with RAT2 includes at least one of:

[0150] - at least one transmission time, or

[0151] - at least one frequency resource.

[0152] In an example embodiment, which may be referred to as a third example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or any one of the first example embodiment of the fifth example aspect and / or the second example embodiment of the fifth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 includes at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0153] In an example embodiment, which may be referred to as a fourth example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or the third example embodiment of the fifth example aspect described herein, wherein the method comprises: retrieving the scheduling information for the at least one SIB associated with RAT2 based on the at least one further indication.

[0154] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the third example embodiment of the fifth example aspect and / or the fourth example embodiment of the fifth example aspect described herein, wherein the at least one further indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information for the at least one SIB associated with RAT2.

[0155] In an example embodiment, which may be referred to as a fifth example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect described herein, wherein the at least one delta-SIB associated with RAT1 lacks scheduling information for the at least one SIB associated with RAT2.

[0156] In an example embodiment, which may be referred to as a sixth example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or the fifth example embodiment of the fifth example aspect described herein, wherein the at least one delta-SIB associated with RAT 1 lacks at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0157] In an example embodiment, which may be referred to as a seventh example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or any one of the fifth example embodiment of the fifth example aspect or the sixth example embodiment of the fifth example aspect described herein, wherein an absence of scheduling information for the at least one SIB associated with RAT2 indicates to initiate monitoring for a Master Information Block (MIB) associated with RAT2.

[0158] In an example embodiment, which may be referred to as a eighth example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or any one of the fifth example embodiment of the fifth example aspect, the sixth example embodiment of the fifth example aspect or the seventh example embodiment of the fifth example aspect described herein, wherein the method comprises: initiating monitoring for at least one MIB associated with RAT2 based on determining that the at least one delta-SIB associated with RAT1 lacks at least one of:

[0159] - scheduling information for the at least one SIB associated with RAT2, or

[0160] - at least one further indication for the at least one SIB associated with RAT2.

[0161] In an example embodiment, which may be referred to as a ninth example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or any one of the seventh example embodiment of the fifth example aspect or the eighth example embodiment of the fifth example aspect described herein, wherein the method comprises: deriving the scheduling information for the at least one SIB associated with RAT2 based on the at least one MIB associated with RAT2.

[0162] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the seventh example embodiment of the fifth example aspect, the eighth example embodiment of the fifth example aspect or the ninth example embodiment of the fifth example aspect described herein, wherein the at least one MIB associated with RAT2 includes an explicit indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0163] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the seventh example embodiment of the fifth example aspect, the eighth example embodiment of the fifth example aspect or the ninth example embodiment of the fifth example aspect described herein, wherein the at least one MIB associated with RAT2 includes an implicit indication including data for deriving the scheduling information for the at least one SIB associated with RAT2. In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0164] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0165] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0166] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0167] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the method comprises: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

[0168] In an example embodiment, which may be referred to as a tenth example embodiment of the fifth example aspect, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the indication is included in at least one broadcasting resource transmitted by the node of RAT 1. In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or the tenth example embodiment of the fifth example aspect described herein, wherein the at least one broadcasting resource is at least one of:

[0169] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0170] - at least one Physical Broadcast Channel (PBCH).

[0171] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the method comprises: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0172] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0173] In an example embodiment, there is provided a method, in particular according to the fifth example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT 1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

[0174] In a sixth example aspect, there may be provided a non-transitory computer readable storage medium comprising program instructions that, when executed by an apparatus, in particular according to the fourth example aspect, and / or any one of the associated example embodiments described herein, causes operations comprising: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , obtaining the at least one delta-SIB associated with RAT 1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access T echnology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

[0175] The sixth example aspect may further comprise one or more steps and / or features of the method and / or any one of the associated example embodiments recited in the fifth example aspect.

[0176] In a seventh example aspect, there may be provided an apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: determining, based at least in part on a first indication from a node of a first Radio Access Technology (RAT1), first scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , determining, based at least in part on a second indication from a node of a second Radio Access Technology (RAT2), second scheduling information of at least one SIB associated with RAT2, monitoring for the at least one delta-SIB associated with RAT1 based on the first scheduling information and for the at least one SIB associated with RAT2 based on the second scheduling information.

[0177] In an example embodiment, which may be referred to as a first example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect, wherein the first indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT1.

[0178] In an example embodiment, which may be referred to as a second example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT2. In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the first indication is an explicit indication which includes at least one Information Element (IE) that comprises the first scheduling information of the at least one delta-SIB associated with RAT1.

[0179] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is an explicit indication which includes at least one Information Element (IE) that comprises the second scheduling information of the at least one SIB associated with RAT2.

[0180] In an example embodiment, which may be referred to as a third example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the first example embodiment of the seventh example aspect and / or the second example embodiment of the seventh example aspect described herein, wherein the first indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT1.

[0181] In an example embodiment, which may be referred to as a fourth example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the first example embodiment of the seventh example aspect, the second example embodiment of the seventh example aspect and / or the third example embodiment of the seventh example aspect described herein, wherein the second indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT2.

[0182] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the third example embodiment of the seventh example aspect and / or the fourth example embodiment of the seventh example aspect described herein, wherein the first indication or the second indication is derivable from at least one of:

[0183] - a pattern,

[0184] - a periodicity, or - an offset, of the at least one broadcasting resource transmitted by the node of RAT1 or the at least one broadcasting resource transmitted by the node of RAT2 respectively.

[0185] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one broadcasting resource transmitted by the node of RAT1 and / or the at least one broadcasting resource transmitted by the node of RAT2 is at least one of:

[0186] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0187] - at least one Physical Broadcast Channel (PBCH).

[0188] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein at least one of the first scheduling information of the at least one delta-SIB associated with RAT1 or the second scheduling information of the at least one SIB associated with RAT2 includes at least one of:

[0189] - at least one transmission time, or

[0190] - at least one frequency resource.

[0191] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in a Physical Broadcast Channel (PBCH) transmitted by the node of RAT2.

[0192] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is received before reception of the at least one delta-SIB associated with RAT1.

[0193] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein absence of reception of the at least one delta-SIB associated with RAT1 indicates to initiate monitoring for the second indication.

[0194] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0195] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0196] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1- specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0197] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0198] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: obtaining the at least one delta-SIB associated with RAT1 based on the first scheduling information, and obtaining the at least one SIB associated with RAT2 based on the second scheduling information. In an example embodiment, which may be referred to as a fifth example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

[0199] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or the fifth example embodiment described herein, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0200] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0201] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT1 and the node of RAT2 are part of a Multi- RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

[0202] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the apparatus is a User equipment (UE) or wherein the apparatus is comprised in a UE. Furthermore, in particular further according to the seventh example aspect, there may be provided an apparatus, comprising means for: determining, based at least in part on a first indication from a node of a first Radio Access Technology (RAT1), first scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , determining, based at least in part on a second indication from a node of a second Radio Access Technology (RAT2), second scheduling information of at least one SIB associated with RAT2, monitoring for the at least one delta-SIB associated with RAT1 based on the first scheduling information and for the at least one SIB associated with RAT2 based on the second scheduling information.

[0203] In an example embodiment, which may be referred to as a first example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect, wherein the first indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT1.

[0204] In an example embodiment, which may be referred to as a second example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT2.

[0205] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the first indication is an explicit indication which includes at least one Information Element (IE) that comprises the first scheduling information of the at least one delta-SIB associated with RAT1.

[0206] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is an explicit indication which includes at least one Information Element (IE) that comprises the second scheduling information of the at least one SIB associated with RAT2.

[0207] In an example embodiment, which may be referred to as a third example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the first example embodiment of the seventh example aspect and / or the second example embodiment of the seventh example aspect described herein, wherein the first indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT1.

[0208] In an example embodiment, which may be referred to as a fourth example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the first example embodiment of the seventh example aspect, the second example embodiment of the seventh example aspect and / or the third example embodiment of the seventh example aspect described herein, wherein the second indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT2.

[0209] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the third example embodiment of the seventh example aspect and / or the fourth example embodiment of the seventh example aspect described herein, wherein the first indication or the second indication is derivable from at least one of:

[0210] - a pattern,

[0211] - a periodicity, or

[0212] - an offset, of the at least one broadcasting resource transmitted by the node of RAT1 or the at least one broadcasting resource transmitted by the node of RAT2 respectively.

[0213] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one broadcasting resource transmitted by the node of RAT1 and / or the at least one broadcasting resource transmitted by the node of RAT2 is at least one of: - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0214] - at least one Physical Broadcast Channel (PBCH).

[0215] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein at least one of the first scheduling information of the at least one delta-SIB associated with RAT1 or the second scheduling information of the at least one SIB associated with RAT2 includes at least one of:

[0216] - at least one transmission time, or

[0217] - at least one frequency resource.

[0218] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in a Physical Broadcast Channel (PBCH) transmitted by the node of RAT2.

[0219] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is received before reception of the at least one delta-SIB associated with RAT1.

[0220] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein absence of reception of the at least one delta-SIB associated with RAT1 indicates to initiate monitoring for the second indication.

[0221] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0222] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments 1 described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0223] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1- specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0224] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0225] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the means are configured for: obtaining the at least one delta-SIB associated with RAT1 based on the first scheduling information, and obtaining the at least one SIB associated with RAT2 based on the second scheduling information.

[0226] In an example embodiment, which may be referred to as a fifth example embodiment of the seventh example aspect, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the means are configured for: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

[0227] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or the fifth example embodiment described herein, wherein the means are configured for: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0228] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0229] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT1 and the node of RAT2 are part of a Multi- RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

[0230] In an example embodiment, there is provided an apparatus, in particular according to the seventh example aspect and / or any one of the associated example embodiments described herein, wherein the apparatus is a User equipment (UE) or wherein the apparatus is comprised in a UE.

[0231] In an eighth example aspect, there may be provided a method, comprising: determining, based at least in part on a first indication from a node of a first Radio

[0232] Access Technology (RAT1), first scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , determining, based at least in part on a second indication from a node of a second Radio Access Technology (RAT2), second scheduling information of at least one SIB associated with RAT2, monitoring for the at least one delta-SIB associated with RAT1 based on the first scheduling information and for the at least one SIB associated with RAT2 based on the second scheduling information.

[0233] In an example embodiment, which may be referred to as a first example embodiment of the eighth example aspect, there is provided a method, in particular according to the eighth example aspect, wherein the first indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT1.

[0234] In an example embodiment, which may be referred to as a second example embodiment of the eighth example aspect, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT2.

[0235] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the first indication is an explicit indication which includes at least one Information Element (IE) that comprises the first scheduling information of the at least one delta-SIB associated with RAT1.

[0236] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is an explicit indication which includes at least one Information Element (IE) that comprises the second scheduling information of the at least one SIB associated with RAT2.

[0237] In an example embodiment, which may be referred to as a third example embodiment of the eighth example aspect, there is provided a method, in particular according to the eighth example aspect and / or any one of the first example embodiment of the eighth example aspect and / or the second example embodiment of the eighth example aspect described herein, wherein the first indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT1.

[0238] In an example embodiment, which may be referred to as a fourth example embodiment of the eighth example aspect, there is provided a method, in particular according to the eighth example aspect and / or any one of the first example embodiment of the eighth example aspect, the second example embodiment of the eighth example aspect and / or the third example embodiment of the eighth example aspect described herein, wherein the second indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT2.

[0239] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the third example embodiment of the eighth example aspect and / or the fourth example embodiment of the eighth example aspect described herein, wherein the first indication or the second indication is derivable from at least one of:

[0240] - a pattern,

[0241] - a periodicity, or

[0242] - an offset, of the at least one broadcasting resource transmitted by the node of RAT1 or the at least one broadcasting resource transmitted by the node of RAT2 respectively.

[0243] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one broadcasting resource transmitted by the node of RAT1 and / or the at least one broadcasting resource transmitted by the node of RAT2 is at least one of:

[0244] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0245] - at least one Physical Broadcast Channel (PBCH).

[0246] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein at least one of the first scheduling information of the at least one delta- SIB associated with RAT1 or the second scheduling information of the at least one SIB associated with RAT2 includes at least one of:

[0247] - at least one transmission time, or

[0248] - at least one frequency resource.

[0249] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in a Physical Broadcast Channel (PBCH) transmitted by the node of RAT2.

[0250] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is received before reception of the at least one delta- SIB associated with RAT 1 .

[0251] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein absence of reception of the at least one delta-SIB associated with RAT1 indicates to initiate monitoring for the second indication.

[0252] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0253] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0254] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0255] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data. In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the method comprises: obtaining the at least one delta-SIB associated with RAT1 based on the first scheduling information, and obtaining the at least one SIB associated with RAT2 based on the second scheduling information.

[0256] In an example embodiment, which may be referred to as a fifth example embodiment of the eighth example aspect, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the method comprises: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

[0257] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or the fifth example embodiment described herein, wherein the method comprises: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT1 and the at least one element included in the at least one SIB associated with RAT2.

[0258] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein RAT1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

[0259] In an example embodiment, there is provided a method, in particular according to the eighth example aspect and / or any one of the associated example embodiments described herein, wherein the node of RAT 1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum. In a ninth example aspect, there may be provided a non-transitory computer readable storage medium comprising program instructions that, when executed by an apparatus, in particular according to the seventh example aspect, and / or any one of the associated example embodiments described herein, causes operations comprising: determining, based at least in part on a first indication from a node of a first Radio Access Technology (RAT1), first scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , determining, based at least in part on a second indication from a node of a second Radio Access Technology (RAT2), second scheduling information of at least one SIB associated with RAT2, monitoring for the at least one delta-SIB associated with RAT1 based on the first scheduling information and for the at least one SIB associated with RAT2 based on the second scheduling information.

[0260] The ninth example aspect may further comprise one or more steps and / or features of the method and / or any one of the associated example embodiments recited in the eighth example aspect.

[0261] In tenth example aspect, which may be combined with any one of the example aspects and / or associated example embodiments described herein, there may be provided an apparatus, in particular a node associated with a first Radio Access Technology (RAT1), comprising at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: transmitting an indication which includes scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , and transmitting the at least one delta-SIB based on the scheduling information.

[0262] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect, wherein the at least one delta-SIB associated with RAT1 is indicative of scheduling information of a node of a second Radio Access Technology (RAT2).

[0263] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of scheduling information of the at least one SIB associated with RAT2.

[0264] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one SIB associated with RAT2 includes at least one of:

[0265] - at least one transmission time, or

[0266] - at least one frequency resource.

[0267] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0268] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one further indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information for the at least one SIB associated with RAT2.

[0269] In another example embodiment, there is provided an apparatus, in particular according to the tenth example aspect, wherein the at least one delta-SIB associated with RAT1 includes an implicit indication from which the scheduling information for the at least one SIB associated with RAT2 is derivable.

[0270] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the two preceding example embodiments, wherein the at least one delta-SIB associated with RAT1 lacks, in particular explicit, scheduling information for the at least one SIB associated with RAT2 and / or wherein the at least one delta-SI B associated with RAT 1 lacks at least one further, in particular explicit, indication that provides the scheduling information for the at least one SIB associated with RAT2. In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

[0271] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0272] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

[0273] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT 1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

[0274] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is derived from and / or constructed based on at least one SIB associated with RAT2, wherein in particular the at least one SIB associated with RAT2 includes one or more of: SIB1 to SIB21 or similar.

[0275] In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or any one of the associated example embodiments described herein, wherein the indication is included in or corresponds to at least one broadcasting resource, in particular transmitted by the node of RAT1. In an example embodiment, there is provided an apparatus, in particular according to the tenth example aspect and / or the preceding example embodiment described herein, wherein the at least one broadcasting resource is at least one of:

[0276] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or

[0277] - at least one Physical Broadcast Channel (PBCH).

[0278] In an eleventh example aspect, in particular which may be combined with the tenth example aspect and / or any one of the associated example embodiments described herein, there may be provided an apparatus, comprising: transmitting, using a node associated with a first Radio Access Technology (RAT1), a first indication which includes first scheduling information of at least one delta- System Information Block (SIB) associated with RAT1 , transmitting, using a node associated with a second Radio Access Technology (RAT2), second indication which includes second scheduling information of at least one SIB associated with RAT2, transmitting the at least one delta-SIB based on the first scheduling information, and transmitting the at least one SIB based on the second scheduling.

[0279] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect, wherein the first indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT1.

[0280] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in or corresponds to at least one broadcasting resource transmitted by the node of RAT2.

[0281] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the first indication is an explicit indication which includes at least one Information Element (IE) that comprises the first scheduling information of the at least one delta-SIB associated with RAT1. In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is an explicit indication which includes at least one Information Element (IE) that comprises the second scheduling information of the at least one SIB associated with RAT2.

[0282] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the first indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT1.

[0283] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is an implicit indication which is derivable from the at least one broadcasting resource transmitted by the node of RAT2.

[0284] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the first indication or the second indication is derivable from at least one of:

[0285] - a pattern,

[0286] - a periodicity, or

[0287] - an offset, of the at least one broadcasting resource transmitted by the node of RAT1 or the at least one broadcasting resource transmitted by the node of RAT2 respectively.

[0288] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the at least one broadcasting resource transmitted by the node of RAT1 and / or the at least one broadcasting resource transmitted by the node of RAT2 is at least one of:

[0289] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or - at least one Physical Broadcast Channel (PBCH).

[0290] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein at least one of the first scheduling information of the at least one delta-SIB associated with RAT1 or the second scheduling information of the at least one SIB associated with RAT2 includes at least one of:

[0291] - at least one transmission time, or

[0292] - at least one frequency resource.

[0293] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is included in a Physical Broadcast Channel (PBCH) transmitted by the node of RAT2.

[0294] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein the second indication is transmitted before transmission of the at least one delta-SIB associated with RAT1.

[0295] In an example embodiment, there is provided an apparatus, in particular according to the eleventh example aspect and / or any one of the associated example embodiments described herein, wherein apparatus is a Multi-RAT Spectrum Sharing (MRSS) Next Generation (NG) Radio Access Network (RAN), wherein the apparatus includes the node of RAT1 and the node of RAT2.

[0296] It should be noted that the features and / or the steps described with respect to the tenth example aspect and / or the eleventh example aspect may be defined correspondingly in yet further aspects such as a method and / or a non-transitory computer readable medium. For example, when a feature recites that an element "is received / transmitted by / to a certain entity" it may be defined as a method step such as "receiving / transmitting... , by / to the certain entity". One or more steps, features and / or characteristics of the other example aspects and / or associated example embodiments described herein may be combined with the tenth example aspect and / or the eleventh example aspect, e.g. by defining the steps from the perspective of the network node instead of the apparatus, e.g. the UE.

[0297] Likewise, one or more steps, features and / or characteristics of the other example aspects and / or associated example embodiments described herein may be changed / formulated from the perspective of the respective network node, e.g. node of RAT1 , node of RAT2 and / or a MRSS-node, instead of the apparatus, e.g. the UE. For example, when a feature / step recites "receiving / transmitting by / to", e.g. the UE, it may be defined in / combined with the tenth example aspect and / or the eleventh example aspect and / or associated example embodiments as a corresponding feature / step reciting "transmitting / receiving to / by" the network node, e.g. node of RAT1 , node of RAT2 and / or a MRSS-node,. The same may be achieved without combination with the tenth example aspect and / or the eleventh example aspect, e.g. so that the steps, features and / or characteristics of the other example aspects and / or associated example embodiments described herein may be simply formulated from the perspective of the network node, e.g. node of RAT1 , node of RAT2 and / or a MRSS-node, instead of the apparatus, e.g. the UE.

[0298] In a twelfth example aspect, in particular which may be combined with any one of the example aspects and / or any one of the associated example embodiments described herein, there may be provided a signal or an electronic carrier, with embedded data, being encoded in accordance with an encoding process, which comprises: providing at least one indication which includes scheduling information of at least one delta-System Information Block (SIB) associated with a first Radio Access Technology (RAT1).

[0299] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the twelfth example aspect described herein, wherein the at least one indication is included in at least one broadcasting resource associated with a node of a RAT 1 , wherein in particular the at least one broadcasting resource is at least one of:

[0300] - at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or - at least one Physical Broadcast Channel (PBCH).

[0301] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the twelfth example aspect and / or any one of the associated example embodiments described herein, wherein the indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information of at least one delta-SIB associated with RAT 1 .

[0302] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the twelfth example aspect and / or any one of the associated example embodiments described herein, wherein the indication is an implicit indication indicative of the scheduling information of the at least one delta-SIB associated with RAT 1 , wherein the implicit indication is derivable from at least one broadcasting resource, wherein in particular the implicit indication is derivable from at least one of:

[0303] - a pattern,

[0304] - a periodicity, or

[0305] - an offset of the at least one broadcasting resource.

[0306] In a thirteenth example aspect, in particular which may be combined with any one of the example aspects, in particular the twelfth example aspect, and / or any one of the associated example embodiments described herein, there may be provided a signal or an electronic carrier, with embedded data, being encoded in accordance with an encoding process, which comprises: providing at least one delta-System Information Block (SIB) associated with a first Radio Access Technology (RAT1).

[0307] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect, wherein the at least one delta-SIB associated with RAT1 is indicative of scheduling information of a node of RAT2.

[0308] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the scheduling information of the at least one delta-SIB associated with RAT 1 includes at least one of: at least one transmission time, or at least one frequency resource.

[0309] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes at least one indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0310] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or the preceding associated example embodiment described herein, wherein the at least one indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information for the at least one SIB associated with RAT2.

[0311] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 lacks, in particular explicit, scheduling information for the at least one SIB associated with RAT2.

[0312] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 lacks at least one, in particular explicit, indication that provides the scheduling information for the at least one SIB associated with RAT2.

[0313] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2. In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is indicative of complementary information to the at least one SIB associated with RAT2.

[0314] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 includes RAT1-specific elements excluding elements already included in at least one SIB associated with RAT2.

[0315] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or nonoverlapping data.

[0316] In an example embodiment, there is provided a signal or an electronic carrier, in particular according to the thirteenth example aspect and / or any one of the associated example embodiments described herein, wherein the at least one delta-SIB associated with RAT1 is derived from at least one SIB associated with RAT2.

[0317] BRIEF DESCRIPTION OF THE DRAWINGS

[0318] Some example embodiments will now be described with reference to the accompanying drawings.

[0319] A full and enabling disclosure to one of ordinary skill in the art is set forth more particularly in the remainder of the specification including reference to the accompanying drawings wherein:

[0320] FIG. 1 shows an example signaling according to subject-matter described herein; FIG. 2 shows an example signaling according to subject-matter described herein;

[0321] Fig. 3 shows a flow chart of an example aspect of the subject-matter described herein;

[0322] Fig. 4 shows a flow chart of an example aspect of the subject-matter described herein, and

[0323] Fig. 5 shows a flow chart of an example aspect of the subject-matter described herein.

[0324] DETAILED DESCRIPTION

[0325] Reference will now be made in detail to the various embodiments, one or more examples of which are illustrated in the figures. Within the following description of the drawings, the same reference numbers may refer to same components. Generally, only the differences with respect to individual embodiments may be described. Each example may be provided by way of explanation and is not meant as a limitation. Further, features illustrated or described as part of one embodiment can be used on or in conjunction with other embodiments to yield yet a further embodiment. It is intended that the description includes such modifications and variations.

[0326] The drawings are schematic drawings which are not drawn to scale. Some elements in the drawings may have dimensions which are exaggerated for the purpose of highlighting aspects of the present disclosure and / or for the sake of clarity of presentation.

[0327] A "Multi-Radio Access Technology Spectrum Sharing Radio Access Network" (MRSS- RAN) or "Multi-Radio Access Technology Spectrum Sharing Next Generation Radio Access Network" (MRSS-NG-RAN; or MRSS-RAN) (these terms may be used interchangeably) may be regarded as a framework, system or architecture which may enable cells or nodes to, in particular, dynamically share a, in particular same, spectrum or spectrum resource(s), and / or to share, in particular a same, one or more carrier(s), e.g. to adapt, preferably dynamically, to traffic requirements. The MRSS-RAN may include multiple nodes, e.g. at least two. This may be important for efficient spectrum utilization, especially as networks evolve and a demand for higher data rates and / or lower latencies increases. The MRSS-RAN may include at least: a node, e.g. a first node, of / associated with a first Radio Access Technology (RAT1), e.g. a fifth Generation Network (5G), a sixth Generation Network (6G) or the like, and a node, e.g. another node or a second node, of / associated with a second Radio Access Technology (RAT2) , e.g. a respective other one of a fifth Generation Network (5G), a sixth Generation Network (6G) or the like. A Radio Access Network (RAN) or MRSS-RAN may include or be disaggregated into multiple, in particular separate, functional units including one or more Centralized Units (CU's) which manage higher-layer protocols such as Radio Resource Control (RRC); one or more Distributed Units (DU's) which manage lower-layer protocols including a Physical Layer (PHY) and / or Medium Access Control (MAC) and / or one or more Radio Units (RU's), which may directly interface Radio Frequency (RF) signals.

[0328] "Scheduling information" may refer to data, information and / or instructions that, e.g., dictate, indicate, specify and / or provide timing resources and / or frequency resources allocated for transmission and / or reception of a signal, element and / or channel. Scheduling information may include time domain information, frequency domain information, periodicity and / or duration. For example, the scheduling information may include at least one transmission time, e.g. of at least one element, e.g. a System Information Block (SIB) or a delta-SIB as described herein. The at least one transmission time may be a temporal instance, time window, time duration, time slot and / or point in time, at / during which a signal, message, resource, element, channel and / or information / data is sent / received. In addition or alternatively thereto, the scheduling information may include at least one frequency resource, e.g. a portion, part, chunk and / or a component of a radio frequency spectrum allocated for transmitting (or receiving) signals. It may be at least one carrier, at least one subcarrier, a Resource Block (RB), which, e.g. groups subcarriers for allocating frequency resources, a bandwidth, a frequency range, a frequency band and / or a center frequency or the like.

[0329] "Monitoring" may be understood as searching for, observing, detecting and / or surveilling a certain element and / or entity, for example at least one delta-System Information Block (SIB), e.g. associated with RAT1 , and / or at least one SIB, e.g. associated with RAT2, as mentioned herein and / or others, for example a System Synchronization Block (SSB), a Synchronization Signal (SS), such as a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), a Physical Broadcast Channel (PBCH) a Master Information Block (MIB) etc. The monitoring may be performed based on certain criteria, e.g. based at least in part on at least one (e.g. explicit and / or implicit) indication (or at least a part thereof). In other words, the UE may be indicated whether and, where and / or when, it should monitor for the at least one delta-SIB, e.g. associated with RAT1 and / or at least one SIB, e.g. associated with RAT2 as mentioned herein. Monitoring may take place at times, e.g. time windows, slots, durations and / or instances, which are indicated or suggested by or included in the indication (or in at least one part thereof). In other words, the monitoring may be a selective, targeted or focused monitoring, which may allow the UE to monitoring when the indication indicates to do so, e.g., which may reduce unnecessary monitoring or monitoring (and / or processing) times by the UE. In connection with the monitoring there may be an associated optional step of obtaining the aforementioned element and / or entity. For example, the apparatus, e.g. the UE, may perform: monitoring for the at least one delta-SIB associated with RAT1 , for example based on determined scheduling information. Then, the apparatus, e.g. the UE, may perform: retrieving or obtaining the at least delta-SIB associated with RAT1 based on the monitoring. Likewise, the apparatus, e.g. the UE, may perform: monitoring for the at least one SIB associated with RAT2. Then, the apparatus, e.g. the UE, may perform: retrieving or obtaining the at least SIB associated with RAT2 based on the monitoring. The retrieving or obtaining step may also include an optional storing step, e.g. storing, e.g. within the apparatus, the retrieved or obtained element and / or entity, for example the at least one SIB associated with RAT2 and / or the at least one delta-SIB associated with RAT1 and / or others, "determining, based at least in part on the indication... , the scheduling information" may be understood as i) retrieving, reading and / or extracting the scheduling information, in particular directly, or as ii) deriving, concluding, deducing, calculating, inferring and / or computing the scheduling information, e.g. indirectly. This may, as further outlined in the following, depend on the indication which is provided / received. In other words, the apparatus, e.g. the UE, e.g. a RAT1 UE or, for example 6G UE, may receive or determine / derive an indication indicating how / when it should read at least one SIB of RAT2, e.g. a 5G SIB and / or a delta-SIB of RAT1 , e.g. a 6G delta-SIB as described herein.

[0330] The "indication", as mentioned herein, may be a flag or pointer, which may be included or encoded, e.g. in a message or at least one broadcasting resource from at least one of the nodes, e.g. a node of RAT1 , a node of RAT 2, a MRSS node etc., for example informing the UE when and / or where to look. The indication may be included or encoded in the message or the at least one broadcasting resource by using, for example, one or more bits.

[0331] The indication may be an explicit indication, e.g. which may be, in particular directly, readable by the apparatus, e.g. the UE. In addition or alternatively, data / information for determining the indication may be provided in the message or the broadcasting resource. The same may also be readable by the apparatus, e.g. the UE. In such a case, the indication may be determined, e.g. from the data / information, e.g. within the message and / or the at least one broadcasting resource. However, instead of an (explicit) indication, an implicit indication may be provided. For example, the indication may correspond to at least one broadcasting resource itself. In other words, the at least one broadcasting resource may embody, represent and / or constitute the implicit indication. In such a case, the indication may be derived, inferred and / or deducted from the at least one broadcasting resource (itself), e.g. by at least one time domain and / or frequency domain characteristic thereof, e.g. a pattern, a periodicity, and / or an offset of / for the at least one broadcasting resource. The offset may be an offset in time, e.g. a time offset, and / or in frequency, e.g. a frequency offset. However, other characteristics and / or parameters of and / or related to the at least one broadcasting resource are also conceivable to derive the (implicit) indication, "periodicity", as mentioned herein, may be defined by a length of a period T or by frequency, e.g. f=1 / T (e.g. inversely proportional to period T). As such, increasing or a larger periodicity may mean a longer period T, which may result in a longer interval between events.

[0332] As mentioned already above, "determining, e.g. scheduling information, based at least in part on an (e.g. explicit / implicit) indication" may be understood in i) accessing, reading and / or extracting the indication from the message or broadcasting resource, e.g. directly; in which case it may also be referred to as "receiving an indication", or ii) deriving, computing and / or inferring the indication from the message or broadcasting resource itself, or from data / information within the message or the broadcasting resource, e.g. indirectly. As such, the indication may be referred to as an explicit indication, e.g. if it is readable, or as an implicit indication, e.g. if it is derivable. In case of an implicit indication, data or information for determining or deriving the indication may be another information element to which the indication has been embedded. In such a case, the UE may first decode the information element and then derive the indication (and another indication) from the information element. An implicit indication and / or data or information for determining or deriving the indication may allow the UE to interpret and / or conclude to the indication, e.g. also by using bits. In some cases, the indication may occupy fewer bits as compared to using data or information. Also, data or information may, in some cases, require the UE to perform at least some processing, e.g. to determine / derive and / or conclude to the indication.

[0333] It should be noted that the indication as recited herein may correspond to "at least one indication" or the indication may correspond to a single indication having multiple parts. In other words, there may be a first indication and a second indication, or there may be a single indication having at least a first part indicating a first information, and a second part indicating a second information. With respect to the above, this could mean that the indication indicates a first action, e.g. using one (first) part and indicating a second action using another (second) part, or vice versa. Additional parts of the indication may be conceivable. Alternatively, two indications may be used. "Based at least in part on the indication" may, for example, mean based on one or more part(s) of the indication. In other cases, it may mean, for example, based on the indication, e.g. as a whole, but also based on additional information and / or additional information element(s), parameters or data.

[0334] A "broadcasting resource" may be a physical and / or logical element in a wireless network to, e.g. enable devices, such as UEs, to access and / or synchronize and / or to stay synchronized with the network and / or to receive configuration and / or system information. For example, a broadcasting resource may be a Synchronization Signal Block (SSB). A broadcasting resource may be at least one broadcasting signal. A broadcasting signal may correspond to a physical component or signal used for broadcasting. In addition or alternatively thereto, a broadcasting resource may be at least one broadcasting channel. A broadcasting channel may correspond to a logical channel or message used to convey information.

[0335] The at least one broadcasting signal may include at least one of:

[0336] - a Primary Synchronization Signal (PSS), or

[0337] - a Secondary Synchronization Signal (SSS). The at least one broadcasting channel may include at least one of:

[0338] - a Physical Broadcast Channel (PBCH),

[0339] - a Physical Downlink Control Channel (PDCCH), or

[0340] - at least one System Information Block (SIB).

[0341] A "Synchronization Signal Block" or "SSB" may be regarded as a component or signaling or, it may be at least part of a signaling, that may be used in wireless communication, such as for example 5G or New Radio (NR), to facilitate a synchronization or synchronization process between a device, e.g. a user equipment (UE), and a node or base station, e.g. of a network. The SSB may provide signals, channels and / or information that enable the device to, in particular initially, connect and / or stay synchronized with the node, allowing it, for example, to communicate effectively over the network. The at least one SSB may be part of a signaling in which a plurality of SSBs are transmitted, e.g. one after another, successively, consecutively and / or periodically. For example, the signaling may include at least a first SSB and at least a second SSB, which for example may be transmitted (e.g. timely) after the first SSB. This may be also referred to as a sequence or series of SSBs.

[0342] The "Synchronization Signals" (SSs), e.g. also referred to as a "Primary Synchronization Signal" (PSS) and a "Secondary Synchronization Signal" (SSS) may be included in the SSB. This PSS may allow the UE to detect and / or identify the presence of a cell. It may provide coarse synchronization in terms of timing and frequency. Once the UE detects the PSS, it may use the SSS to gain finer synchronization, determining more specific timing and frequency alignment. Together with the PSS, the SSS may assist the UE in, for example, identifying a specific cell ID. In an example, each SSB of the plurality of SSBs may include at least a PSS and an SSS. In other words, the PSS / SSS may be present in each SSB. In an example, the PSS may be located or included in a first OFDM symbol of the SSB, occupying specific / defined subcarriers therein. In an example, the SSS may be located or included in a third OFDM symbol of the SSB, occupying specific / defined subcarriers therein. The SSB recited herein may include (e.g. in addition to the synchronization signal(s)) at least one "Physical Broadcast Channel" (PBCH). A PBCH may span over a single symbol or over multiple symbols in the SSB and / or a number of subcarriers therein. A System Information Block (SIB) may be regarded as a, in particular structured, set of broadcasted system information, e.g. transmitted by the cellular network to provide details and / or system-related configuration and / or operational information, e.g. from the network to user equipment (UE). SIBs may help the UE connect to the network and understand the network’s capabilities, services, and configurations. The design of SIBs for e.g. 6G may be expected to be similar to the design of SIBs of, e.g. 5G. However, 6G may require more information to be added to some of the SIB signals, as for example SIB1 . 6G SIBs could convey new parameters used by advanced models running on the 6G part of the network, allowing devices to better understand and adapt to shared network behavior. System information may be transmitted or broadcasted using, for example, a "Master Information Block" (MIB) and / or System Information Block(s), such as one or more of (SIB1 , SIB2,... , SIB21 etc.). The MIB may carry configuration information which may be required to establish an initial connection. For example, it may include information about subcarrier spacing, cell barring, and other parameters, e.g. required to establish communication and / or initial access. The MIB may be included in any PBCH used and / or in one or more PBCHs in the SSB. The MIB may provide scheduling information which may assist the UE to acquire, locate and / or decode transmissions associated with the SSB, e.g. "System Information Block Type 1" transmissions. In an example, the SIB1 and MIB transmission may be coupled, connected or associated with each other, e.g. directly or 1-to-1. For example, SIB1 transmission may occur based on MIB transmission, e.g. in dependence thereof. In particular, the SIB1 transmission periodicity may be the same or identical as the MIB periodicity. A SIB1 transmission (e.g. initial transmission and its repetitions) may be, in particular dynamically, scheduled, e.g. by the PDCCH configured in the MIB.

[0343] SIB1 transmission, for example, may include network configuration information for the UE after It synchronizes with the network using an SSB. A SIB1 transmission may be regarded as a transmission associated with, SSB transmission, e.g. as it may follow thereafter. SIB1 may contain parameters that may assist the UE with accessing and / or registering with the network. As said, the MIB may provide the UE with parameters that specify when and where to find SIB1. In particular, SIB1 transmission may mean monitoring the Physical Downlink Control Channel (PDCCH) which may provide a Downlink Control Information (DCI) scheduling the SIB1 , e.g. on the Physical Downlink Shared Channel (PDSCH). The parameters may include timing information and / or Information where the UE can find the Physical Downlink Control Channel (PDCCH) carrying Downlink Control Information (DCI) that may schedule SIB1 . Using this information, the UE can identify the time and frequency resources for SIB1 , e.g. in the Physical Downlink Shared Channel (PDSCH). After reading the MIB, the UE may monitor the PDCCH for DCI messages. These DCI messages may direct the UE to the exact location of SIB1 in the PDSCH. To this end, the PDSCH may carry the actual SIB1 content, which the UE may then decode. Once the UE decodes SIB1 , it may have sufficient information, for example, to start a Random Access Procedure (RACH), which is the next step in accessing the network and establishing a connection. SIB1 may substantially act as a gateway to the remaining system information blocks, enabling the UE to complete its initial network setup. SIB1 may include i) Cell Access Information: Information about cell selection and reselection; ii) PLMN Information: Details about the Public Land Mobile Network (PLMN), including support for multiple PLMNs if applicable; iii) Scheduling Information: Information on when and how other SIBs (like SIB2 and SIB3) are broadcast if they are present; iv) Minimum System Information: This includes access barring parameters, random access configurations, and timing information for access and registration procedures / purposes. However, there may be other SIBs, such as SIB2 to SIB21 , which are exemplarily outlined below.

[0344] With respect to the subject-matter provided therein, it should be noted that a novel signaling and / or SIB construction, design and / or structure is suggested / provided, in which the SIB associated with RAT1 , e.g. 6G, corresponds to at least one "delta-System Information Block (SIB)". A delta-SIB may be a type of System Information Block that includes differential, partial and / or complementary information, e.g. it may include updates, changes, addition's, modifications and / or complementary data relative to a baseline SIB, e.g. a SIB (e.g. SIB1 to SIB21) associated with RAT2 and / or it may lack redundant and / or overlapping data with respect to the SIB (e.g. SIB1 to SIB21) associated with RAT2. For example, the delta-SIB associated with RAT1 may be indicative of i) differential information to be added to the at least one SIB associated with RAT2 and / or ii) complementary information to the at least one SIB associated with RAT2. For example, the data of the delta-SIB may complement any one or more of SIB1-21 associated with RAT2. The at least one delta-SIB associated with RAT1 may include, in particular only, RAT1-specific elements, e.g. excluding elements already included in the at least one SIB associated with RAT2. The at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 may collectively provide non-redundant and / or non- overlapping data. By focusing on changes, modifications, amendments and / or complementary data etc., delta-SIBs may minimize (SIB-)transmission overhead. This may also reduce the need to retransmit the entire system information.

[0345] According to subject-matter of some example aspects recited herein, the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with a second Radio Access Technology (RAT2). "merging" may be understood in combining, aggregating, matching and / or converging the respective elements. This process may result in a, in particular unified, dataset that, e.g. combines information from both RAT1 and RAT2, e.g. enabling the UE to operate, in particular efficiently, in the shared environment. There may be an optional step associated with storing, e.g. within the apparatus, the merged, aggregated, matched and / or converged dataset, e.g. the delta-SIB / SIB-combination / aggregation. The merging may be performed for example, to generate a, in particular complete or at least sufficient / adequate, set of system information and / or to retrieve at least system information associated with a Multi- RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), e.g. for operation therein. One or more element(s) from the delta-SIB of RAT1 may fill gaps, update, complement, complete, augment, modify, expand, correct, supplement, expand, amend, add, override, append to and / or refine one or more the element(s) and / or information in the SIB of RAT2. It may also be conceivable, that the apparatus, e.g. the UE, over-writes any information and / or element repeated and / or overlapped between the two RATs, wherein rules for overwriting may be indicated by the network, e.g. a respective network node of RAT1 or RAT2 or the MRSS node. A delta-SIB of RAT1 , e.g. 6G, may be more updated than the SIB of RAT2, e.g. 5G, e.g. the data and / or information, or at least one element, included in or provided by a delta-SIB of RAT1 , e.g. 6G, may be prioritized with respect to information and / or data, or at least one element, included in or provided by at least one SIB of RAT2, e.g. 5G. By separating differential (delta) information from the baseline information, the network may reduce redundancy and / or minimize the overhead of transmitting the same data across the RATs.

[0346] The at least one delta-SIB may include an indication, e.g. an explicit indication as mentioned above, that comprises the scheduling information, e.g. for the at least one SIB associated with RAT2. However, the at least one delta-SIB may also lack such (e.g. explicit) scheduling information (and / or an indication indicating the same, e.g. explicitly), for example, the at least one delta-SIB may i) not include, ii) may be free of, iii) may be missing, iv) may be without such information and / or v) has absence or a deficit of such information. I may also be said that such information is not present and / or available in the delta-SIB, at least not explicitly and / or is absent therefrom. Whenever reference to "lack of something or similar, is made, this may be interchangeable herein with one or more of the preceding formulations.

[0347] Absence of scheduling information for the at least one SIB associated with RAT2 and / or absence of an (explicit) indication that comprises scheduling information for the at least one SIB associated with RAT2 may indicate to initiate monitoring for a Master Information Block (MIB) associated with RAT2. In other words, this may serve as criteria to initiate, start, trigger and / or cause monitoring for the MIB associated with RAT2. Absence of scheduling information may also be viewed as an implicit indication. It should be noted that when "at least one" delta-SIB and / or SIB is mentioned, that there could be multiple delta-SIBs and / or SIBs, e.g. two, three, four or more. It may also be possible, that a first delta-SIB may be different from a second delta-SIB, e.g. in that the first delta-SIB may be a delta-SIB1 and the second delta-SIB may be a delta-SIB2, or vice versa. Also, it should be noted that when reference to a delta-SIB is made, anyone of a delta-SIB1 , a delta- SIB2, ...., and / or a delta-SIB21 etc. may be meant, as the subject-matter described herein is not limited to a certain type of SIB (e.g. any one of SIB1 to SIB21) or delta SIB.

[0348] A "time frame for monitoring" or a "monitoring occasion" (these terms may be used interchangeably) may be an, in particular scheduled, instance in time, a time period, time duration, time slot and / or an interval during which an apparatus, e.g. a UE, listens, searches, monitors and / or expects a respective element, e.g. a delta-SIB, e.g. associated with RAT1 , and / or a SIB, e.g. associated with RAT2, e.g. from a network node, e.g. a MRRS node. The monitoring occasions may be interdependent and / or linked to one another. By linking the monitoring occasions, the UE may avoid duplicative monitoring efforts. Instead of monitoring both RAT1 and RAT2 resources independently, it may monitor those, e.g. during a same time frame, time period, time slot, time interval and / or time duration. In other words, these may be at least partially aligned with each other, so that the apparatus maintains an active state. Aligning monitoring occasions may prevent the UE from needing to wake up separately for each RAT and / or avoid entering an idle state during the same time frame, which may lead to conserving power and / or reduced energy consumption.

[0349] The term "non-transitory," as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM).

[0350] As used herein, "at least one of the following: " and "at least one of " and similar wording, where the list of two or more elements are joined by "and" or "or", mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.

[0351] The apparatus may include a processor configured to provide signals to and receive signals and to control the functioning of the apparatus. The processor may be configured to control other elements of apparatus by effecting control signaling via electrical leads connecting processor to the other elements, such as a display or a memory. The processor may, for example, be embodied in a variety of ways including circuitry, at least one processing core, one or more microprocessors with accompanying digital signal processor(s), one or more processor(s) without an accompanying digital signal processor, one or more coprocessors, one or more multi-core processors, one or more controllers, processing circuitry, one or more computers, various other processing elements including integrated circuits (for example, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), and / or the like), or some combination thereof.

[0352] The term "circuitry" may refer to one or more or all of the following:

[0353] (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) and

[0354] (b) combinations of hardware circuits and software, such as (as applicable):

[0355] (i) a combination of analog and / or digital hardware circuit(s) with software / firmware and

[0356] (ii) any portions of hardware processor(s) with software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and hardware circuit(s) and / or processor(s), such as a microprocessor(s) or a portion of a microprocessor(s), that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.

[0357] This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device ora similar integrated circuit in server, a cellular network device, or other computing or network device.

[0358] The apparatus may comprise memory which may store information elements. The apparatus may include volatile memory and / or non-volatile memory. For example, volatile memory may include Random Access Memory (RAM) including dynamic and / or static RAM, on-chip or off-chip cache memory, and / or the like. Non-volatile memory, which may be embedded and / or removable, may include, for example, read-only memory, flash memory, magnetic storage devices, for example, hard disks, floppy disk drives, magnetic tape, optical disc drives and / or media, non-volatile random access memory (NVRAM), and / or the like. Like volatile memory, non-volatile memory may include a cache area for temporary storage of data. At least part of the volatile and / or non-volatile memory may be embedded in processor. The memories may store one or more software programs, instructions, pieces of information, data, and / or the like which may be used by the apparatus for performing operations disclosed herein.

[0359] The apparatus may be a UE or may be at least comprised in a UE.

[0360] Fig. 1 shows example signaling according to subject-matter described herein, for example a signaling between a node, in particular a MRSS node, which for example includes a node of a first Radio Access Technology (RAT1) and a node of a second Radio Access Technology (RAT2), to an apparatus, e.g. a UE. It should be noted that Fig. 1 should not be construed to be limited to 5G and / or 6G. Fig. 1 may be explained by the following, non-limiting steps:

[0361] 1. The node of the first Radio Access Technology (1stRAT node; for example a 6G node) may indicate to an apparatus, e.g. a UE, scheduling information, which may include at least one transmission time and / or at least one frequency resource etc., e.g. of at least one delta-SIB associated with RAT1 , e.g. a 1stRAT delta SIB, wherein the apparatus may be a UE capable of utilizing RAT1 , e.g. 6G or a 6G-UE. Indicating the scheduling information may be achieved by transmitting an, in particular explicit, indication, e.g. included in at least one broadcasting resource or by refraining from including such an explicit indication, e.g. so that the UE may derive an indication (e.g. implicit indication), e.g. from the at least one broadcasting resource itself, e.g. in cases of absence of scheduling information and / or an explicit indication. The at least one broadcasting resource may be a broadcasting resource of RAT1 , e.g. a RAT1- broadcasting resource, such as a Synchronization Signal (SS), e.g. a Primary Synchronization Signal (PSS) and / or a Secondary Synchronization Signal (SSS), and / or at least one Physical Broadcast Channel (PBCH). The indication may be derived from at least one of: a pattern, a periodicity and / or an offset, e.g. a time offset and / or a frequency offset, of / for the at least one broadcasting resource.

[0362] 2. The node of the first Radio Access Technology (1stRAT node; for example a 6G node) may transmit at least one delta-SIB associated with RAT 1 , e.g. a 1stRAT delta SIB, in particular based on the indicated scheduling information. For example, the node of RAT 1 may transmit the delta-SIB at the transmission time and / or using at least one frequency resource indicated in step 1 . The delta-SIB may include information, elements and / or data specific to RAT1 , e.g. 1stRAT specific information, for example 6G specific information. The delta-SIB may include information, elements, an indication and / or data indicative of scheduling information of a node of a second Radio Access Technology (RAT2) (2ndRAT node; for example a 5G node), wherein the scheduling information may include at least one transmission time and / or at least one frequency resource of at least one SIB associated with RAT2, e.g. 2ndRAT SIB(s), for example 5G SIB(s). 3. a The apparatus, e.g. the UE, may determine, retrieve and / or acquire the 1stRAT delta SIB payload.

[0363] 3.b The apparatus, e.g. the UE, may retrieve and / or obtain the scheduling information about the at least one SIB associate with RAT2, e.g. information about 2ndRAT SIB(s) transmission(s).

[0364] 4. The node of the second Radio Access Technology (2ndRAT node; for example a 5G node) may transmit at least one SIB associated with RAT2, e.g. the 2ndRAT SIB, in particular based on the scheduling information, e.g. implicitly / explicitly , indicated by the at least one delta-SIB. For example, the node of RAT2 may transmit the SIB at the transmission time indicated in step 2.

[0365] 5. a The apparatus, e.g. the UE, may determine, detect and / or obtain the at least one SIB associated with RAT2, e.g. the 2ndRAT SIB, in particular based on the scheduling information, e.g. implicitly / explicitly, indicated by the at least one delta-SIB. For example, the node of RAT2 may transmit the SIB at the transmission time indicated in step 2.

[0366] 5.b The apparatus, e.g. the UE, may combine, merge and / or aggregate at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with RAT2, for example to retrieve, derive, obtain and / or determine at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), e.g. to which the node of RAT 1 and the node of RAT2 may belong.

[0367] Fig. 2 shows example signaling according to subject-matter described herein, for example a signaling between a node, in particular a MRSS node, which for example includes a node of a first Radio Access Technology (RAT1) and a node of a second Radio Access Technology (RAT2), to an apparatus, e.g. to a UE. It should be noted that Fig. 2 should not be construed to be limited to 5G and / or 6G.

[0368] Fig. 2 may be explained by the following, non-limiting steps:

[0369] 1. The node of the first Radio Access Technology (1stRAT node; for example a 6G node) may indicate to an apparatus, e.g. a UE, first scheduling information, which may include at least one transmission time and / or at least one frequency resource etc., e.g. of at least one delta-SIB associated with RAT1 , e.g. a 1stRAT delta SIB, wherein the apparatus may be a UE capable of utilizing RAT1 , e.g. 6G or a 6G-UE. Indicating the scheduling information may be achieved by transmitting an, in particular explicit, indication (e.g. a first indication), e.g. included in at least one (e.g. first) broadcasting resource or by refraining from including such an explicit indication, e.g. so that the UE may derive an indication (e.g. implicit indication), e.g. from the at least one broadcasting resource itself, e.g. in cases of absence of scheduling information and / or an explicit indication. The at least one (e.g. first) broadcasting resource may be a broadcasting resource of RAT1 , e.g. a RAT1 -broadcasting resource, such as a Synchronization Signal (SS), e.g. a Primary Synchronization Signal (PSS) and / or a Secondary Synchronization Signal (SSS), and / or at least one Physical Broadcast Channel (PBCH). The indication may be derived from at least one of: a pattern, a periodicity and / or an offset, e.g. a time offset and / or a frequency offset, of / for the at least one broadcasting resource. The node of the second Radio Access Technology (2ndRAT node; for example a 5G node) may indicate to an apparatus, e.g. a UE, second scheduling information, which may include at least one transmission time and / or at least one frequency resource etc., e.g. of at least one SIB associated with RAT2, e.g. a 2ndRAT SIB, wherein the apparatus may be a UE capable of utilizing RAT1 , e.g. 6G or a 6G-UE. Indicating the scheduling information may be achieved by transmitting an, in particular explicit, indication (e.g. a second indication), e.g. included in at least one (e.g. second) broadcasting resource or by refraining from including such an explicit indication, e.g. so that the UE may derive an indication (e.g. implicit indication), e.g. from the at least one broadcasting resource itself, e.g. in cases of absence of scheduling information and / or an explicit indication. The at least one (e.g. second) broadcasting resource may be a broadcasting resource of RAT2, e.g. a RAT2 -broadcasting resource, such as a Synchronization Signal (SS), e.g. a Primary Synchronization Signal (PSS) and / or a Secondary Synchronization Signal (SSS), and / or at least one Physical Broadcast Channel (PBCH). The indication may be derived from at least one of: a pattern, a periodicity and / or an offset, e.g. a time offset and / or a frequency offset, of / for the at least one broadcasting resource.

[0370] 3. The apparatus, e.g. the UE, may determine, retrieve, obtain and / or acquire the 2ndRAT SIB scheduling information, e.g. as indicated in step 2.

[0371] 4. The node of the second Radio Access Technology (2ndRAT node; for example a 5G node) may transmit at least one SIB associated with RAT2, e.g. the 2ndRAT SIB, in particular based on the second scheduling information, e.g. implicitly / explicitly, indicated by the at least one second broadcasting resource of RAT2, e.g. as indicated in step 2.

[0372] 5. The apparatus, e.g. the UE, may determine, detect, acquired and / or obtain the at least one SIB associated with RAT2, e.g. the 2ndRAT SIB, in particular based on the second scheduling information.

[0373] 6. The node of RAT 1 may transmit the delta-SIB based on the first scheduling information. The apparatus, e.g. the UE, may determine, retrieve and / or acquire the 1stRAT delta SIB payload.

[0374] 7. The apparatus, e.g. the UE, may combine, merge and / or aggregate at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with RAT2, for example to retrieve, derive, obtain and / or determine at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), e.g. to which the node of RAT 1 and the node of RAT2 may belong.

[0375] In the following, there is provided a full and enabling disclosure to one of ordinary skill in the art in the form of various examples of the subject-matter described herein, in particular with respect to SIB3, SIB4, and / or SIB5, for example in an MRSS cell, by a RAT1 , e.g. a 6G UE. However, refraining from outlining examples for SI B1 , SIB2 and / or SIB6 to SIB21 should not be understood and / or construed as insufficient disclosure and / or lack of enablement for the skilled person for the same. Rather, focusing on the below three examples may be viewed in terms of rationality and / or simplicity. Also, the examples provided below should not be understood in a limiting sense, e.g. any reference to 5G, NR, 6G, SIB3-5, specific parameters, elements and / or steps or the like should be understood as merely an example and / or optional features, unless explicitly outlined otherwise.

[0376] For example, in 5G NR, System Information Block 3 (SIB3) may provide information primarily related to cell re-selection and / or mobility management. The main purpose of SIB3 may be to assist the UE (User Equipment) in determining when and / or how to switch from one cell to another, for example eitherwithin the same frequency (e.g. intra-frequency cell reselection parameters) or to a different frequency (e.g. inter-frequency cell reselection parameters), e.g. to maintain, in particular optimal, connectivity and / or service quality. SIB3 may contain additional parameters that may apply in specific scenarios, such as thresholds for signal quality (e.g., SINR or RSRP) to trigger re-selection. SIB3 may also include information about the serving cell and / or neighboring cells that the UE can use in its re-selection decisions, such as cell identity and / or certain broadcast parameters.

[0377] The main purpose of SIB4 may be to provide parameters for reselecting cells, e.g. on the same frequency when the UE detects better signal quality and / or other preferable characteristics in a neighboring cell on that frequency. Important parameters in SIB4 may be, e.g.: Intra-Frequency Neighbor Cell Information like the cell ID; Cell Reselection Parameters, such as q-RxLevMin (e.g. minimum signal level required to consider the cell) and / or offset values that may help fine-tune the reselection process. SIB4 may include priority settings that influence the order in which the UE considers different cells, as well as threshold values like S-lntraSearch and / or S-NonlntraSearch, which may trigger the UE to start looking for a better cell, e.g. if the current cell’s quality drops below these thresholds.

[0378] System Information Block 5 (SIB5) may provide information to the User Equipment (UE) about inter-frequency cell reselection. It may also have Neighbor Cell Information and / or Priority-Based Cell Selection that, e.g. helps the UE in the cell reselection process which may be beneficial for maintaining, e.g. the robustness of UE mobility. It may also provide the thresholds (e.g., for RSRP or SINR) that the UE can use, e.g. to determine if it should stay on the current frequency or move to a neighboring frequency.

[0379] Spectrum sharing between 5G and 6G (e.g. MRSS) could benefit from a unified approach to broadcasting system information. SIB3, SIB4 and SIB5 could provide a foundation for common mobility and / or re-selection parameters across both networks and / or communicate a common re-selection criteria applicable to both technologies, e.g. reducing complexity for UEs that support both standards.

[0380] 5G SIB3 and / or 5G SIB4 and / or 5G SIB5 could use common fields for basic information (e.g., cell selection thresholds, priorities, and neighbor cell information) that are compatible with both 5G and 6G. As additional parameters may be required, e.g. to account for the unique challenges and / or capabilities of 6G, such as parameters related to cell reselections in 6G frequencies that are not applicable for 5G, Al-driven network management, beam-based transmissions, and / or energy efficiency. In this example, a 6G- specific SIB could be acquired by a 6G UE e.g. to complement the received information from 5G SIB3 and / or 5G SIB4 and / or 5G SIB5. 6G-specific SIB may include, in particular technology-specific, extensions, for example: Fields specific to ultra-high-frequency bands and / or Al-driven cell selection. It may facilitate a smooth transition and / or handover between 5G and 6G cells. For example, it could provide handover assistance parameters that help 6G UEs recognize when it might be preferable to hand off to a 6G cell, or vice versa.

[0381] Fig. 3 shows a flow chart 300 of an example aspect of subject-matter described herein. The flow chart may comprise steps of an apparatus, a method and / or a non-transitory computer readable medium as mentioned herein.

[0382] The flow chart 300 may include the step of determining 310, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT 1 . The flow chart 300 may include the step of monitoring 320 for the at least one delta-SIB associated with RAT1 based on the determined scheduling information. The flow chart 300 may include the step of merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in at least one SIB associated with a second Radio Access Technology (RAT2).

[0383] The flow chart 300 may comprise or be combined with one or more additional steps associated with some of the example aspects and / or associate example embodiments described herein. Fig. 4 shows a flow chart 400 of an example aspect of subject-matter described herein. The flow chart may comprise steps of an apparatus, a method and / or a non-transitory computer readable medium as mentioned herein.

[0384] The flow chart 400 may include the step of determining 410, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT 1 . The flow chart 400 may include the step of obtaining 420 the at least one delta-SIB associated with RAT1 based on the determined scheduling information. The flow chart 400 may include the step of monitoring 430 for at least one SIB associated with a second Radio Access Technology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

[0385] The flow chart 400 may comprise or be combined with one or more additional steps associated with some of the example aspects and / or associate example embodiments described herein.

[0386] Fig. 5 shows a flow chart 500 of an example aspect of subject-matter described herein. The flow chart may comprise steps of an apparatus, a method and / or a non-transitory computer readable medium as mentioned herein.

[0387] The flow chart 500 may include the step of determining 510, based at least in part on a first indication from a node of a first Radio Access Technology (RAT1), first scheduling information of at least one delta-System Information Block (SIB) associated with RAT1. The flow chart 500 may include the step of determining 520, based at least in part on a second indication from a node of a second Radio Access Technology (RAT2), second scheduling information of at least one SIB associated with RAT2. The flow chart 500 may include the step of monitoring 530 for the at least one delta-SIB associated with RAT1 based on the first scheduling information and for the at least one SIB associated with RAT2 based on the second scheduling information.

[0388] The flow chart 500 may comprise or be combined with one or more additional steps associated with some of the example aspects and / or associate example embodiments described herein. While the foregoing is directed to embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

[0389] LIST OF ABBREVIATIONS

[0390] MRSS Multi-Rat Spectrum Sharing

[0391] Al Artificial Intelligence

[0392] DTX Discontinuous Transmission

[0393] DTR Discontinuous Reception

[0394] RU Radio Unit

[0395] DU Distributed Unit

[0396] CU Centralized Unit

[0397] RAT Radio Access Technology

[0398] RAT 1 First Radio Access Technology

[0399] RAT2 Second Radio Access Technology

[0400] NG Next Generation

[0401] RAN Radio Access Network

[0402] RRC Radio Resource Control

[0403] CORESET Control Resource Set

[0404] NR New Radio

[0405] DCI Downlink Control Information

[0406] MIB Master Information Block

[0407] PBCH Physical Broadcast Channel

[0408] PSS Primary Synchronization Signal

[0409] SSS Secondary Synchronization Signal

[0410] PCI Physical Cell Identity

[0411] SI System Information

[0412] SIB System Information Block

[0413] SIB1...21 System Information Block Type 1... Type 21

[0414] PDCCH Physical Downlink Control Channel

[0415] PDSCH Physical Data Shared Channel 1

[0416] SSB Synchronization Signal Block

[0417] UE User Equipment

[0418] LIST OF REFERENCE NUMERALS

[0419] 300-500 Flow chart

[0420] 310 Determining step

[0421] 320 Monitoring step

[0422] 330 Merging step

[0423] 410 Determining step

[0424] 420 Obtaining step

[0425] 430 Monitoring step

[0426] 510 Determining step

[0427] 520 Determining step

[0428] 530 Monitoring step

Claims

74CLAIMS1. Apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , obtaining the at least one delta-SIB associated with RAT1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access Technology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

2. Apparatus according to claim 1 , wherein the at least one delta-SIB associated with RAT1 is indicative of scheduling information of the at least one SIB associated with RAT2.

3. Apparatus according to claim 2, wherein the scheduling information of the at least one SIB associated with RAT2 includes at least one of:- at least one transmission time, or- at least one frequency resource.

4. Apparatus according to any one of claims 2-3, wherein the at least one delta-SIB associated with RAT 1 includes at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

5. Apparatus according to claim 4, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: retrieving the scheduling information for the at least one SIB associated with RAT2 based on the at least one further indication.

756. Apparatus according to any one of the preceding claims 4-5, wherein the at least one further indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information for the at least one SIB associated with RAT2.

7. Apparatus according to claim 1 , wherein the at least one delta-SIB associated with RAT1 lacks scheduling information for the at least one SIB associated with RAT2.

8. Apparatus according to any one of claims 1 or 7, wherein the at least one delta- SIB associated with RAT 1 lacks at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

9. Apparatus according to any one of claims 1 or 7-8, wherein an absence of scheduling information for the at least one SIB associated with RAT2 indicates to initiate monitoring for a Master Information Block (MIB) associated with RAT2.

10. Apparatus according to any one of claims 1 or 7-9, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: initiating monitoring for at least one MIB associated with RAT2 based on determining that the at least one delta-SIB associated with RAT1 lacks at least one of:- scheduling information for the at least one SIB associated with RAT2, or- at least one further indication for the at least one SIB associated with RAT2.11 . Apparatus according to any one of claims 9-10, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: deriving the scheduling information for the at least one SIB associated with RAT2 based on the at least one MIB associated with RAT2.

12. Apparatus according to any one of claims 9-11 , wherein the at least one MIB associated with RAT2 includes an explicit indication that provides the scheduling information for the at least one SIB associated with RAT2.7613. Apparatus according to any one of claims 9-11 , wherein the at least one MIB associated with RAT2 includes an implicit indication including data for deriving the scheduling information for the at least one SIB associated with RAT2.

14. Apparatus according to any one of the preceding claims, wherein the at least one delta-SIB associated with RAT1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

15. Apparatus according to any one of the preceding claims, wherein the at least one delta-SIB associated with RAT 1 is indicative of complementary information to the at least one SIB associated with RAT2.

16. Apparatus according to any one of the preceding claims, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.

17. Apparatus according to any one of the preceding claims, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

18. Apparatus according to any one of the preceding claims, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

19. Apparatus according to any one of the preceding claims, wherein the indication is included in at least one broadcasting resource transmitted by the node of RAT1.

20. Apparatus according to claim 19, wherein the at least one broadcasting resource is at least one of:- at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or77- at least one Physical Broadcast Channel (PBCH).

21. Apparatus according to any one of the preceding claims 10-12, wherein the at least one processor; and the at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to perform: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT 1 and the at least one element included in the at least one SIB associated with RAT2.

22. Apparatus according to any one of the preceding claims, wherein RAT 1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

23. Apparatus according to any one of the preceding claims, wherein the node of RAT1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

24. Apparatus according to any one of the preceding claims, wherein the apparatus is a User equipment (UE) or wherein the apparatus is comprised in a UE.

25. Method, comprising: determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , obtaining the at least one delta-SIB associated with RAT1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access Technology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

26. Method according to claim 25, wherein the at least one delta-SIB associated with RAT 1 is indicative of scheduling information of the at least one SIB associated with RAT2.7827. Method according to claim 26, wherein the scheduling information of the at least one SIB associated with RAT2 includes at least one of:- at least one transmission time, or- at least one frequency resource.

28. Method according to any one of claims 26-27, wherein the at least one delta-SIB associated with RAT 1 includes at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

29. Method according to claim 28, wherein the method comprises: retrieving the scheduling information for the at least one SIB associated with RAT2 based on the at least one further indication.

30. Method according to any one of the preceding claims 28-29, wherein the at least one further indication is an explicit indication which includes at least one Information Element (IE) that comprises the scheduling information for the at least one SIB associated with RAT2.31 . Method according to claim 25, wherein the at least one delta-SIB associated with RAT1 lacks scheduling information for the at least one SIB associated with RAT2.

32. Method according to any one of claims 25 or 31 , wherein the at least one delta- SIB associated with RAT 1 lacks at least one further indication that provides the scheduling information for the at least one SIB associated with RAT2.

33. Method according to any one of claims 25 or 31-32, wherein an absence of scheduling information for the at least one SIB associated with RAT2 indicates to initiate monitoring for a Master Information Block (MIB) associated with RAT2.

34. Method according to any one of claims 25 or 31-33, wherein the method comprises: initiating monitoring for at least one MIB associated with RAT2 based on determining that the at least one delta-SIB associated with RAT1 lacks at least one of:79- scheduling information for the at least one SIB associated with RAT2, or- at least one further indication for the at least one SIB associated with RAT2.

35. Method according to any one of claims 33-34, wherein the method comprises: deriving the scheduling information for the at least one SIB associated with RAT2 based on the at least one MIB associated with RAT2.

36. Method according to any one of claims 33-35, wherein the at least one MIB associated with RAT2 includes an explicit indication that provides the scheduling information for the at least one SIB associated with RAT2.

37. Method according to any one of claims 33-35, wherein the at least one MIB associated with RAT2 includes an implicit indication including data for deriving the scheduling information for the at least one SIB associated with RAT2.

38. Method according to any one of the preceding claims 25-37, wherein the at least one delta-SIB associated with RAT 1 is indicative of differential information to be added to the at least one SIB associated with RAT2.

39. Method according to any one of the preceding claims 25-38, wherein the at least one delta-SIB associated with RAT 1 is indicative of complementary information to the at least one SIB associated with RAT2.

40. Method according to any one of the preceding claims 25-39, wherein the at least one delta-SIB associated with RAT1 includes RAT1 -specific elements excluding elements already included in the at least one SIB associated with RAT2.41 . Method according to any one of the preceding claims 25-40, wherein the at least one delta-SIB associated with RAT1 and the at least one SIB associated with RAT2 collectively provide non-redundant or non-overlapping data.

42. Method according to any one of the preceding claims 25-41 , wherein the method comprises:80 merging at least one element included in the at least one delta-SIB associated with RAT1 with at least one element included in the at least one SIB associated with RAT2.

43. Method according to any one of the preceding claims 25-42, wherein the indication is included in at least one broadcasting resource transmitted by the node of RAT1.

44. Method according to claim 43, wherein the at least one broadcasting resource is at least one of:- at least one Synchronization Signal (SS), including a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), or- at least one Physical Broadcast Channel (PBCH).

45. Method according to any one of the preceding claims 25-44, wherein the method comprises: retrieving at least system information associated with a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN) based on merging the at least one element included in the at least one delta-SIB associated with RAT 1 and the at least one element included in the at least one SIB associated with RAT2.

46. Method according to any one of the preceding claims 25-45, wherein RAT 1 is a sixth Generation Network (6G) and RAT2 is a fifth Generation Network (5G).

47. Method according to any one of the preceding claims 25-46, wherein the node of RAT1 and the node of RAT2 are part of a Multi-RAT Spectrum Sharing (MRSS)-Radio Access Network (RAN), wherein the node of RAT1 and the node of RAT2 share at least a same spectrum.

48. Non-transitory computer readable storage medium comprising program instructions that, when executed by an apparatus, in particular according to any one of claims 1-24, causes operations comprising:determining, based at least in part on an indication from a node of a first Radio Access Technology (RAT1), scheduling information of at least one delta-System Information Block (SIB) associated with RAT1 , obtaining the at least one delta-SIB associated with RAT1 based on the determined scheduling information; and monitoring for at least one SIB associated with a second Radio Access Technology (RAT2) based at least in part on the at least one delta-SIB associated with RAT1.

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