Huawei Technologies Co., Limited

Zte Corporation

Xiaohan Liu

Min Huang

Aiqin Zhang

Jing Chen

Lijia Zhang

Yingxin Huang

Yixian Xu

Xuemin Liu

Jing Lan Chen

Yu Zhang

Dongmei Zhang

Xinyi Chen

Meriau Laurence

Method, apparatus and systems are provided for key derivation. A target base station receives multiple keys derived by a source base station, where the keys correspond to cells of the target base station. The target base station selects a key corresponding to the target cell after obtaining information regarding a target cell that a user equipment (UE) is to access. An apparatus for key derivation and a communications system are also provided.

Method, apparatus and system for key derivation

A method, an apparatus and a system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to cells of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communications system are also provided.

A method, an apparatus and a system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to cells under control of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communications system are also provided.

A method and a device for key generation are disclosed in embodiments of the present invention. The method for key generation is applied to a UMTS-LTE resource convergence scenario that has a base station as an anchor point, and includes: deriving, according to a root key and a count value of an LTE system, or according to a random number and an LTE system root key, a UMTS integrity key and cipher key, and sending the UMTS integrity key and cipher key to a UMTS control node. The embodiments of the present invention enable the derivation of the UMTS integrity key and cipher key in a UMTS-LTE resource convergence scenario that has a base station as an anchor point, enable a user equipment to communicate securely through a UMTS, and further improve security of data transmitted in the UMTS.

Method and device for key generation

A key separation method and device are provided in the embodiments of the present invention. The key separation method includes: when a User Equipment hands over from a source node to a target node, or when the User Equipment moves from the source node to the target node in idle state, determining whether or not the source node is a Home NodeB; and if the source node is a Home NodeB, triggering an Authentication and Key Agreement procedure according to the operator's policy, to update Ciphering Key and Integrity Key. By performing Authentication and Key Agreement procedure, the method and device of the embodiments separate key of the source node from the key of the target node.

Key separation method and device

Embodiments of the present invention provide an MTC device authentication method, an MTC gateway, and a related device, which are used to solve a problem that direct interaction between a large quantity of MTC devices and a network side brings a heavy load to a network when the MTC devices are authenticated in the prior art. The method includes: performing, by an MTC gateway, mutual authentication with a core network node; performing, by the MTC gateway, mutual authentication with an MTC device; reporting, by the MTC gateway, a result of the mutual authentication with the MTC device to the core network node; and providing, by the MTC gateway, a non access stratum link protection key K between the MTC device and the core network node according to a key Kor a key K

MTC device authentication method, MTC gateway, and related device

Embodiments of the present invention provide a security authentication method, apparatus, and system, where the method includes: verifying a feature identifier for identifying terminal equipment, where the terminal equipment is machine-to-machine equipment; and obtaining a key corresponding to the feature identifier, so as to perform secure communication with the terminal equipment according to the key. In the embodiments of the present invention, after terminal equipment, a mobility management entity, and a home subscriber system successfully perform authentication and key agreement, it is verified whether a feature identifier of the terminal is legal, and when the feature identifier of the terminal is a legal identifier, a key is obtained according to the feature identifier, so that the mobility management entity and the terminal equipment perform secure communication according to the key, thereby implementing secure communication between M2M equipment and a network side.

Security authentication method, apparatus, and system

Embodiments of the present invention disclose a method and an apparatus for authenticating a communication device, where the method includes: receiving an attach request including a group identifier and sent by an MTC device to be authenticated, where the group identifier is a group identifier of an MTC group where the MTC device to be authenticated is located; determining whether a first group authentication vector bound to the group identifier exists locally, where the first group authentication vector is an authentication vector used for authenticating MTC devices in the MTC group; and if existing, according to the first group authentication vector, authenticating the MTC device to be authenticated, and generating a system key of the MTC device to be authenticated. The technical solutions provided in the present invention can be applied to the technical field of authenticating the MTC device.

Method and apparatus for authenticating communication device

A higher limit of forward supplemental channel transmitting power of sector trunking group users is reduced or increased correspondingly based on whether sector power is overload, and it is set as a target maximum transmitting power of trunking group forward supplemental channels; the trunking group users are divided into groups based on channel board, and an adjusting step size is determined based on a ratio between trunking group combining transmitting power of the users divided and forward supplemental channel shared transmitting power of the sector trunking group, and a comparison between the forward supplemental channel shared transmitting power of the sector trunking group and target maximum transmitting power of the trunking group forward supplemental channels, and the higher limit of the forward supplemental channel transmitting power of sector trunking group is adjusted based on the adjusting step size.

Method and systems for power overload control of the trunking group forward supplemental channel

The present invention relates to a method for adjusting forward transmission power control threshold in a mobile communication system, comprising the following steps of: setting in advance at the base station side an overload control threshold and an adjustment range of the power control threshold of sector forward transmission power; obtaining current total values of the forward transmission power of the sector; judging whether the sector forward transmission power exceeds said overload control threshold; judging whether the sector forward transmission power exceeds said adjustment range of the control threshold; dynamically adjusting the forward transmission power threshold, and so on. By the steps of pre-setting the overload control threshold and power control threshold adjustment range of the sector forward transmission power, obtaining the current total values of the forward transmission power of the whole sector and judging whether the sector forward transmission power exceeds the overload threshold and so on, the present invention realizes real-time regulation of the sector forward transmission power, thereby can track the variance of the actual forward transmission power, and ensure CDMA mobile communication system having a good communication service quality.

Method to adjust forward transmission power control threshold in mobile communication system

The present invention relates to a method for adjusting forward transmission power control threshold of a terminal in a mobile communication system, including the following steps of setting in advance at a base station side a forward pilot threshold and a lower bound, an upper bound of a forward transmission power control threshold as well as adjustment ranges of said lower bound and upper bound; obtaining the current forward pilot energy measured and reported by the terminal; judging whether the forward pilot energy exceeds said forward pilot threshold; and adjusting the forward transmission power control threshold of the terminal. In the invention, the forward pilot energy reported by the terminal is judged and adjusted through the pre-set parameters above, so as to dynamically adjust the forward transmission power control threshold of the terminal in the sector, reduce call drop rate, and promote the communication quality of a CDMA mobile communication system.

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Shenzhen, China

Xiaohan Liu