Method and user equipment (ue) for provisioning minimum system information (msi) in wireless communication system

Patent metadata

Field	Value
Publication number	US-2018132168-A1
Application number	US-201715804381-A
Country	US
Kind code	A1
Filing date	Nov 6, 2017
Priority date	Nov 4, 2016
Publication date	May 10, 2018
Grant date	—

Abstract

Accordingly the embodiments herein provide a method for provisioning Minimum System Information (MSI) for User Equipment (UE) in a wireless communication system. The method includes decoding Primary Broadcast Channel (PBCH) to acquire a first Master Information Block (MIB) periodically transmitted by base station. Further, the method includes determining to perform one of bar a cell from which the first MIB is acquired for a pre-determined period of time and acquire second MIB transmitted on Secondary Broadcast Channel (SBCH) by base station based on cell barring indication received in the first MIB. Furthermore, the method includes transmitting a request message to the base station to obtain at least one SI block of the OSI. In some embodiments, the method includes receiving a list of system configuration indexes (SCIs) and corresponding configuration of SI blocks, from the base station based on SI storage capability of the UE indicated to the base station.

First claim

What is claimed is:

1 . A method for provisioning Minimum System Information (MSI) for a User Equipment (UE) in a wireless communication system, the method comprising:
decoding a Primary Broadcast Channel (PBCH) to acquire a first Master Information Block (MIB) periodically transmitted by a base station; and determining to perform one of:
barring a cell from which the first MIB is acquired for a pre-determined period of time, or
acquiring a second MIB transmitted on a Secondary Broadcast Channel (SBCH) by a base station based on the cell barring indication received in the first MIB.

2 . The method of claim 1 , wherein the cell from which the first MIB is acquired is barred for a pre-determined period of time when the received cell barring indication is enabled.

3 . The method of claim 1 , wherein the second MIB is referred as System Information Block Type 1 (SIB1), the SBCH is a physical downlink shared channel (PDSCH) scheduled by a physical downlink control channel (PDCCH) and the PBCH is a non-scheduled downlink broadcast channel.

4 . The method of claim 1 , wherein the first MIB is stored when the received cell barring indication is disabled and the second MIB is acquired based on scheduling information received in the first MIB.

5 . The method of claim 4 , further comprising determining to perform one of:
considering the cell from which the second MIB is acquired as a candidate cell for camping, or barring the cell for a pre-determined period of time.

6 . The method of claim 5 , wherein the cell is barred for a pre-determined period of time when the second MIB is not acquired.

7 . The method of claim 5 ,
wherein the cell is considered as the candidate cell for camping based on at least one of:
essential system information parameters for cell selection and cell access are received in the second MIB, or
when the essential system information parameters are not received in the second MIB and the UE has valid stored essential system information parameters for cell selection and cell access corresponding to at least one of a the system configuration index (SCI), a valuetag, a Global Cell Identity (GCI) and an area identifier associated with the second MIB, and
wherein the UE has obtained the valid stored essential system information parameters from another cell or another frequency.

8 . The method of claim 7 , further comprising applying at least one cell selection parameter to camp on a cell from which the first MIB and the second MIB are acquired,
wherein the at least one cell selection parameter is used from the information received in one of the second MIB and the valid stored essential system information, and wherein the valid stored essential information corresponds to at least one of: the SCI, the valuetag, the GCI, or the area identifier.

9 . The method of claim 8 , further comprising:
storing the second MIB, at least one of the SCI, the valuetag, the GCI, or the area identifier associated with the second MIB; accessing the camped cell based on at least one of a random access parameter received in the acquired second MIB and valid stored essential system information, wherein the valid stored essential information corresponds to at least one of the SCI, the valuetag, the GCI, or the area identifier; determining whether at least one of a SI block of Other System Information (OSI) available in the camped cell is provided based an on-demand basis, wherein the on-demand basis to deliver the SI block of the OSI available in the camped cell is decided based on at least one of an indication and a flag received in the second MIB; and transmitting a request message to the base station to obtain at least one SI block of the OSI.

10 . The method of claim 9 ,
wherein the transmitting of the request message to the base station to obtain at least one SI block of the OSI comprises determining reservation of one of at least one physical random access channel (PRACH) preamble and a plurality of PRACH resources, and wherein the reservation of PRACH preambles and PRACH resources is indicated in the second MIB.

11 . A user equipment (UE) provisioned to acquire Minimum System Information (MSI) in a wireless communication system, the UE is configured to:
decode a Primary Broadcast Channel (PBCH) to acquire a first Master Information Block (MIB) periodically transmitted by a base station; and determine to perform one of:
bar a cell from which the first MIB is acquired for a pre-determined period of time, or
acquire a second MIB transmitted on a Secondary Broadcast Channel (SBCH) by a base station based on a cell barring indication received in the first MIB.

12 . The UE of claim 11 , wherein the cell from which the first MIB is acquired is barred for a pre-determined period of time when the received cell barring indication is enabled.

13 . The UE of claim 11 , wherein the second MIB is referred as System Information Block Type 1 (SIB1), the SBCH is a physical downlink shared channel (PDSCH) scheduled by a physical downlink control channel (PDCCH) and the PBCH is a non-scheduled downlink broadcast channel.

14 . The UE of claim 11 ,
wherein the first MIB is stored when the received cell barring indication is disabled, and wherein the second MIB is acquired based on scheduling information received in the first MIB.

15 . The UE of claim 14 , wherein the UE is further configured to determine to perform one of:
consider the cell from which the second MIB is acquired as a candidate cell for camping, or bar the cell for a pre-determined period of time.

16 . The UE of claim 15 , wherein the UE is further configured to bar the cell for a pre-determined period of time when the second MIB is not acquired.

17 . The UE of claim 15 ,
wherein the UE is further configured to consider the cell as the candidate cell for camping based on at least one of:
essential system information parameters for cell selection and cell access are received in the second MIB, or
when the essential system information parameters are not received in the second MIB and the UE has valid stored essential system information parameters for cell selection and cell access corresponds to at least one of a system configuration index (SCI), a valuetag, a global cell identity (GCI) and an area identifier associated with the second MIB received in the second MIB, and
wherein the UE has obtained the stored essential system information parameters from another cell or another frequency.

18 . The UE of claim 17 ,
wherein the UE is further configured to apply at least one cell selection parameter to camp on a cell from which first MIB and second MIB are acquired, wherein the UE is configured to use at least one cell selection parameter from the information received in one of the second MIB and the valid stored essential system information, and wherein the valid stored essential system information corresponds to at least one of the SCI, the valuetag, or the GCI, or the area identifier.

19 . The UE of claim 18 , wherein the UE is further configured to:
store the second MIB, at least one of the SCI, the valuetag, the GCI, or the area identifier associated with the second MIB; access the camped cell based on at least one of a random access parameter received in the acquired second MIB and the valid stored essential system information corresponding to at least one of the SCI, the valuetag, the GCI, or the area identifier; determine whether at least one of a SI block of Other System Information (OSI) available in the campe

Assignees

• Samsung Electronics Co Ltd

Inventors

• Ingale Mangesh Abhimanyu
• Agiwal Anil

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W48/14 Primary

  using user query {or user detection} · CPC title

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• H04W48/12

  using downlink control channel · CPC title

• H04W48/20

  Selecting an access point · CPC title