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Enhanced handling on forbidden plmn list

A technology for public land mobile and mobile communication networks, which is applied in the field of wireless communication and can solve problems such as unavailability of PLMN

Active Publication Date: 2020-01-31
MEDIATEK INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this case, if the counter value is less than the maximum value, the PLMN ID will be selected again and the counter value will easily reach the maximum value
Therefore, if the rejection message is from a bogus operator, the PLMN ID will be added to the "Disabled PLMNs" list in the UE's SIM / USIM and the PLMN will become permanently unavailable to serve the UE

Method used

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  • Enhanced handling on forbidden plmn list
  • Enhanced handling on forbidden plmn list
  • Enhanced handling on forbidden plmn list

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Embodiment Construction

[0021] Reference will now be made in detail to some embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0022] figure 1 A PLMN 100 is schematically shown with a core network (CN) 110 and a RAN 120 supporting an enhanced disabled PLMN list according to one novel aspect. The PLMN network 100 includes an application server 111 that provides various services by communicating with a plurality of UEs including the UE 114 . exist figure 1In an example of the CN 110, the application server 111 and the packet data network gateway (packet data network gateway, PDN GW or P-GW) 113 are part of the CN 110. A UE 114 and its serving base station (BS) 115 are part of a radio access network RAN ​​120 . The RAN 120 provides radio access to the UE 114 via a radio access technology (RAT). Application server 111 communicates with UE 114 through PDN GW 113 , Serving GW 116 and BS 115 . Mobility management entity (MME) or access and mobility managem...

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Abstract

A method of enhanced handling of a Forbidden Public Land Mobile Network (PLMN) list is proposed. When a UE tries to attach to a PLMN and receives an ATTACH Reject message having no integrity protection, it could be transmitted from a network entity trying to block the PLMN for providing service. Therefore, by introducing a temporary forbidden PLMN list and a timer T3247, UE can avoid adding the PLMN ID to the Forbidden PLMN list and avoid being blocked for network access. Instead, UE is only temporary refrained from selecting the PLMN ID and is able to retry for the network access after T3247expiry. The temporary list together with T3247 mechanism thus gives UE more opportunity to try with the same PLMN ID at a different time and / or a different UE location, where the malicious blocking isno longer available.

Description

[0001] cross reference [0002] The present invention is based on 35 U.S.C. §119 claiming the following priority: U.S. Provisional Application No. 62 / 674,316, filed May 21, 2018, titled "Enhanced Handling on Forbidden PLMN List", the entire content of the related application adopted Incorporated herein by reference. technical field [0003] Embodiments of the present invention are generally related to wireless communication, and, more specifically, to an enhanced processing method for a prohibited Public Land Mobile Network (PLMN) list in a New Radio (New Radio, NR) system. Background technique [0004] A PLMN is a network established and operated by a competent authority or a recognized operating agency (ROA) for the specific purpose of providing land mobile communication services to the public. PLMNs offer communication possibilities for mobile users. A PLMN can provide services in one frequency band or a combination of frequency bands. There is a relationship between ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W48/18H04W48/02
CPCH04W48/02H04W48/18H04W48/04H04W60/04H04W60/00H04W84/042H04W76/25H04W8/245H04W8/20H04W12/122
Inventor 皇甫建君马各·纳耶米
Owner MEDIATEK INC
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