Samsung Electronics Co., Ltd.

Beijing Samsung Telecom R&d Center

Beljing Samsung Telecom R&d Center

Detao Li

Sung-Ho Choi

Kook-Heui Lee

Chunying Sun

Hong Wang

Lixiang Xu

Xiaoqiang Li

Soeng-Hun Kim

Qinghai Gao

Shanpeng Xiao

A method for initiating uplink signaling proactively by the MBMS UE, comprising steps of: the UE moving to a new cell; listening to information on a MCCH; initiating an uplink signaling according to information on the MCCH; sending a response message to the UE by a RNC, or if no UE moving to the new cell, initiating the uplink signaling proactively by the UE if the information received from the MCCH includes an indication for UE counting; and sending a response message to the UE by the RNC. The UE in URA_PCH mode and IDLE mode can response to the MBMS Notification message sent by the RNC, and can initiate the Cell Update process or the RRC Connection process in order to obtain the MBMS parameters. The RNC sets different contents for the response message according to different reasons of message initiation.

Method for initiating uplink signaling proactively by MBMS UE

A method of signaling bearer connection on Iu interface for MBMS service, includes the following steps: (a) RNC receives a MBMS Notification message for a certain MBMS service from SGSN; (b) RNC constructs a MBMS Service Request message according to the contents of the notification; (c) RNC sends a SCCP Connection Request message to SGSN, requests to establish a SCCP signaling connection, and then waits for a reply; (d) RNC receives a SCCP Connection Confirmation message from SGSN. This invention solves the problem of signaling connection on Iu interface after MBMS service is introduced into the existing mobile communication system. The connection mode provided in this invention can reasonably utilize network resources, effectively reduce signaling congestion on Iu interface and reduce modifications to the existing Iu interface message.

Method for multimedia broadcast/multicast service signaling bearer connection on Iu interface

A method for supporting backward compatibility of Multimedia Broadcast and Multicast Service (hereinafter referred to as MBMS) in a mobile communication system of Wideband Code Division Multiple Access (hereinafter referred to as WCDMA) is disclosed. An example method recites mapping relationship between the MBMS service identifier and the RAB identifier and judging the capability of the RNC by the SGSN, and accordingly, determining if the MBMS service is backwards compatible and if user equipment is compatible with different versions.

Method for supporting backward compatibility of MBMS

A channel type switching method for Multimedia Broadcast and Multicast Service (MBMS) point-to-point (P-t-P) channel and point-to-multi point (P-t-M) channel is provided. When a user equipment (UE) moves to a cell in a drift radio network controller (DRNC) with an Iur interface, the DRNC decides to switch between a common channel and a dedicated channel and then notifies a serving radio network controller (SRNC) of MBMS channel type and common channel parameters.

MBMS PtP and PtM channel change

This invention provides a paging method for Multimedia Broadcast/Multicast Service in mobile communication system. The paging process and radio resource setup process are merged in this method to try to reduce uplink responses. This invention extends existing PCH IubFP frame structure by adding MBMS Indication bit(MI) to PCH IubFP frame. The PCH IubFP frame includes Paging Indication (PI) and Paging Message. Paging message carries MBMS service information. MBMS Service Identity or MBMS Paging Indicator is added to the reserved 12 bits in Paging Indicator Channel (PICH) frame structure. Radio Network Controller (RNC) transfers Paging Indicator Message and paging message to Base Station (Node B) so as to send over the air-interface.

Growing community of inventors

Beijing, China

Detao Li