Alcatel Lucent

Songwei Ma

Haibo Wen

Fanxiang Bin

Qingshan Zhang

Chunyan Yao

Jun Zheng

Renxiang Yan

Method and apparatus for decreasing multi-cell feedback overhead is provided in the present invention. Wherein a mobile user terminal equipment utilizes a first period to feedback short-term channel direction information of a serving base station, utilizes a second period to feedback long-term channel direction information of neighboring base stations, further, the mobile user terminal equipment utilizes a third period to feedback long-term relative amplitude information, utilizes a fourth period to feedback short-term relative phase information, wherein the first period is shorter than the second period, and the third period is longer than the fourth period.

Method and apparatus for aiding the establishment of the multicast backhaul in the fixed network for mobile multicast service

A roaming method for a mobile terminal in a wireless local area network is disclosed. In the method, a target access point (AP) device receives an access request for roaming from the mobile terminal, and a target access controller (AC) obtains mobility information of the mobile terminal in an original extended service set based on the access request, wherein the mobility information include information of an AP device, an AC and a mobile agent server associated with the mobile terminal. Then the target AC determines whether the roaming for the mobile terminal is an inter-IP subnet roaming or an intra-IP subnet roaming based on the obtained mobility information. The target AC performs mobile IP based handover when the roaming is determined as the inter-IP subnet roaming and performs Inter Access Point Protocol based handover when the roaming is determined as the intra-IP subnet roaming.

Roaming method for a mobile terminal in WLAN, related access controller and access point device

The invention provides a new solution for multimedia service guides, so as to aid the user equipment to receive multimedia service. The multimedia service management device notifies a service identifier and a service address of the multimedia service to a network server, and notifies the service identifier of the multimedia service to multimedia service guide device. Multimedia service guide device generates multimedia service guides comprising service identifier. After the user equipment obtains the multimedia service guides, it queries the network server for the service address corresponding to the multimedia service according to the service identifier comprised in the multimedia service guides, and obtains the multimedia service according to the service address.

Method and apparatus for receiving multimedia service and aiding the receipt of multimedia service

The present invention relates to a Femtocell providing services to a UE, and it proposes a method for authenticating a UE registered in a first operating domain of a communication network (e.g. a mobile core network), when the UE requests the service provided by a second operating domain (e.g. a fixed access network, a backhaul network). An authentication server in the first operating domain allocates the needed information to access the service provided by the second operating domain for the UE, and stores. After receiving the needed information, the UE sends an authentication request message to an authentication server in the second operating domain, wherein the authentication server in the second operating domain forwards the authentication request message to the authentication server in the first operating domain.

Method and apparatus for authenticating a user equipment

With migration of network technology and more and more requirements of user equipment for accessing to Internet, the network security faces more and more severe situation. There is provided a method for distributed security control in communication network system and the device thereof in order to improve security and operatability of network operator. In the method, firstly the network controller establishes a network security control mechanism, which is used for a second network device to check the validity of the data package from the user equipment; secondly, the network controller sends the network security control mechanism to the second network devices; lastly, the second network device checks the validity of the data package from the user equipment according to the network security control mechanism, and discards the data package if the data package is invalid. With the present invention, security and operatability of the communication network may be improved greatly, particularly, the functionality of address anti-spoofing can be implemented in the network with a WLAN architecture in centralized control.

Method and device for distributed security control in communication network system

The invention provides methods and devices for reporting and parsing the errors of a packet based on IPSec protocol family in a communication network. Concretely, the reserved field in ICMP security failure message is used to denote the error type at the second level of the error in the packet. With the aid of the solution provided by the invention, it is possible to report the error types for a tunnel packet which has an error in detail. And the source termination device can ascertain the error types of a tunnel packet, so as to eliminate the error.

Apparatus and a method for reporting the error of each level of the tunnel data packet in a communication network

The present invention provides a method and apparatus for registering to a designated router in a rendezvous point in an anycast group in a multicast communication network, wherein the rendezvous point implements a joint-registering based on registering status of all rendezvous points in the anycast group. The main rendezvous point sends to the designated router the Register Stop message only when all rendezvous points in the anycast group do not need the Register message from the designated router; when any one of other rendezvous points does not need the Register message, sending the Register message to it is stopped. With the method and apparatus of the present invention, the cases resulting in the interruption of subscriber terminal multicast traffic can be reduced, and the CPU resource of the main rendezvous point and bandwidth resources between it and other rendezvous points are saved.

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Shanghai, China

Songwei Ma