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Resuming a radio resource control connection using a security token comprising a globally unique cell identifier

A cell identifier and radio resource technology, applied in connection management, security devices, wireless communication, etc., can solve the problem of security token reduction and other issues

Pending Publication Date: 2021-06-15
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0060] However, the cell IDs described above are sometimes not globally unique across multiple PLMNs, so that when a cell ID is included in a security token calculation, security tokens may not be bound to the same cell (resulting in reduced security) could be an issue

Method used

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  • Resuming a radio resource control connection using a security token comprising a globally unique cell identifier
  • Resuming a radio resource control connection using a security token comprising a globally unique cell identifier
  • Resuming a radio resource control connection using a security token comprising a globally unique cell identifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0257] Embodiment 1. A method performed by a user equipment UE 120, eg, for resuming a radio resource control RRC connection to a target cell in a wireless communication network 100, the method comprising:

[0258] When the target cell has been found (eg identified) (the target cell and the source cell may eg be the same), a security token is generated 501, wherein the input values ​​in the security token generation function include a set of input parameters, the The set of input parameters comprises at least a cell identifier of said target cell (eg a cell ID preferably associated with a PLMN) and an indication of a Public Land Mobile Network PLMN of said target cell,

[0259] A recovery request is sent 502 to a target network node 112 serving said target cell, said recovery request comprising said security token.

Embodiment 2

[0260] Embodiment 2. The method of embodiment 1, wherein any of said indication of said PLMN of said target cell and said cell identifier is represented by any one or more of:

[0261] PLMN identity ID, such as the PLMN ID of the first PLMN or the selected PLMN,

[0262] cell ID,

[0263] a hash and / or checksum of the broadcast system information or part thereof (eg SIB1), said broadcast system information or part thereof including said PLMN and cell ID information,

[0264] multiple PLMN IDs, and / or and wherein said cell identity comprises multiple cell IDs,

[0265] a Tracking Area Code TAC associated with said PLMN (e.g. the first PLMN or a selected PLMN),

[0266] A RAN area code RANAC associated with the PLMN (eg, the first PLMN or the selected PLMN).

Embodiment 3

[0267] Embodiment 3. The method according to any one of embodiments 1-2, wherein the set of input parameters further comprises:

[0268] a Tracking Area Code TAC associated with said PLMN (e.g. the first PLMN or a selected PLMN),

[0269] A RAN area code RANAC associated with the PLMN (eg, the first PLMN or the selected PLMN).

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Abstract

Methods, User Equipment, UE, (120) and source network node (111) for resuming a Radio Resource Control, RRC, connection to a target cell in a wireless communications network (100). The UE generates a security token using a set of input parameters, and 5 sends a resuming request with the security token to a target network node (112) serving the target cell. When receiving the resuming request, the source network node generatesa security token using a set of input parameters in the same manner as the UE. If the received security token is successfully verified when compared with the generated security token, the source network node provides to the target network node a UE context 10 of the UE, to enable the target network node to resume the RRC connection.

Description

technical field [0001] The present disclosure generally relates to a UE, a source network node and a method therefor for restoring a radio resource control RRC connection of a user equipment UE to a target cell in a wireless communication network. Background technique [0002] In a typical wireless communication network, wireless devices, also called wireless communication devices, mobile stations, stations (STAs) and / or user equipments (UEs), communicate via a local area network such as a Wi-Fi network or a radio access network (RAN) Communicate with one or more Core Networks (CN). The RAN coverage is divided into geographical areas (also referred to as beams or beam groups) that are divided into service areas or cell areas, where each service area or cell area A base station (RBS)) is served by a radio network node, which in some networks may also eg be denoted as NodeB, eNodeB (eNB) or gNB (as denoted in 5G). A service area or cell area is a geographical area where radi...

Claims

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Application Information

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IPC IPC(8): H04W76/19H04W12/106H04W12/69
CPCH04W76/27H04W76/19H04W12/106H04W76/18H04W36/0079H04W36/0033H04W36/0083H04W84/042
Inventor O·奥尔松G·米尔德I·L·J·达席尔瓦M·斯塔汀
Owner TELEFON AB LM ERICSSON (PUBL)
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