Abstract: In order to overcome the defects of the centralized subscriber data management in the telecommunication network, a highly effective distributed data management system for the communication network is achieved in the present invention through improving and applying the distributed Hash table (DHT) technology to subscriber data management in the communication network, which overcomes the deficiencies of the conventional centralized data management. A method for processing subscriber data in a communication network based on a DHT is provided, which includes the following steps. A first node in a DHT overlay network receives subscriber data to be stored. The subscriber data to be stored is regarded as backup data divided into L/K portions. L is greater than or equal to a ratio of a node working bandwidth of a second node to a node recovering bandwidth for data recovery of the second node in the DHT overlay network. K is a total number of backup data and is an integer greater than zero.

Abstract: A method of informing a network of a change of user equipment capability includes: receiving, by a network, a register request message carrying information of new user equipment capability to from a user equipment; analyzing, by the network, the register request message, and storing the information of new user equipment capability for reference by subsequent establishment of a session; stopping a current registration timer on the server side set for the user equipment; initiating a new registration timer on the server side for the user equipment; and sending a response message carrying information of the new registration timer on the server side to the user equipment so as to reset a registration timer on the user side based on information of the new registration timer on the server side in the response message. The capability change is informed to the network in time.

Abstract: An encoding method includes extracting background noise characteristic parameters within a hangover period; for a first superframe after the hangover period, performing background noise encoding based on the extracted background noise characteristic parameters; for superframes after the first superframe, performing background noise characteristic parameter extraction and DTX decision for each frame in the superframes after the first superframe; and for the superframes after the first superframe, performing background noise encoding based on extracted background noise characteristic parameters of the current superframe, background noise characteristic parameters of a plurality of superframes previous to the current superframe, and a final DTX decision. Also, a decoding method and apparatus and an encoding apparatus are disclosed.

Abstract: A system for implementing multimedia ring back tone service is disclosed, which includes a communication network, an MRBT platform storing multimedia ring back tones in the communication network and a VIG. The MRBT platform is respectively connected to the Service Switch Center dominating the terminal and an MGW in the communication network through the VIG; when a calling terminal initiates a call through the Service Switch Center, the VIG establishes a communication link from the terminal to the MRBT platform through the MGW and the VIG before the call is put through; and MRBT platform plays multimedia ring back tones for the calling terminal via the established communication link. The present invention also provides a method for implementing multimedia ring back tone service is also disclosed. The system and the method can implement multimedia ring back tone service in 3G communication networks.

Abstract: Embodiments of the present invention disclose a method for providing Unified Communication (UC) service, which includes obtaining communication information displayed on a terminal where a mouse locates; triggering a corresponding UC service based on the communication information. The present invention also discloses a UC client. The UC client includes a communication information obtaining unit, capable of capturing communication information displayed on a terminal where a mouse locates, and a UC service unit, capable of triggering a corresponding UC service based on the communication information. In this way a user needs to move a cursor or press a key in the active interface to enter corresponding communication information into the UC client, therefore the complicated operations of manually keying in communication information or searching an address book in the UC client interface according to conventional technique are avoided and the users' burden will be relieved.

Abstract: The present invention relates to radio communications and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method for feeding back ACK information of SPS data packets includes receiving an uplink downlink assignment index (UL DAI) from a base station (BS), wherein the UL DAI indicates a number (N) of downlink data packets, mapping acknowledgements/negative acknowledgements (ACKs/NAKs) of k SPS data packets of the downlink data packets to positions from the (N?k+1)th ACK/NAK to the Nth ACK/NAK, and feeding back N ACKs/NAKs to the BS.

Abstract: A method, terminal, and system for cell reselection are disclosed. The method includes: a terminal obtains a dedicated priority list from a first system; and performs cell reselection according to the dedicated priority list when the terminal camps on a cell of a second system. The corresponding terminal and system are also provided in other embodiments of the invention. According to an embodiment of the invention, the terminal performs cell reselection by using the dedicated priority list obtained from the first system so as to free the second system from establishing the dedicated priority list. Problems in the prior arts that establishment of the dedicated priority list causes too much increased signaling and too high costs for network upgrade are solved.

Abstract: A fixed codebook search method includes initializing a counter, searching for pulses and calculating the value of a cost function Qk, initializing the counter if the Qk value increases, increasing the value of the counter if the Qk value does not increase, judging whether the value of the counter is greater than the threshold value, continuing the search process if the value of the counter is not greater than the threshold value, and ending the whole search process if the value of the counter is greater than the threshold value.

Abstract: A method and system for xDSL crosstalk cancellation is provided. The method includes dividing xDSL signals into a plurality of signal sets; and connecting signals from a same signal set to a same processing unit to be processed. A digital subscriber line access multiplexer (DSLAM) includes a line switching control module and at least one processing unit.

Abstract: A method and device for improving clock stability are provided. The method includes: determining whether a difference between a current sender timestamp (ST) and a current receiver timestamp (RT) is a mutated value; pre-processing the ST and RT, if the difference between the ST and RT is a mutated value; acquiring a service clock according to the pre-processed ST and RT; and sending time division multiplex (TDM) data according to the service clock.. Through the embodiments of the present disclosure, a packet delay variance (PDV) may be smoothed, the impairment of the PDV on clock recovery may be reduced, the quality of the clock recovery may be improved, and the problem of clock synchronization may be solved through the mutation processing on the timestamps.

Abstract: A tail-biting decoding method and device are provided, so as to improve accuracy of backtracking state determination and decrease decoding delay. The method includes the following steps. Survivor paths of a training system are acquired. The training system is formed of a first transport block and a second transport block connected in series. The number of the survivor paths passing through each first state of the second transport block is counted. A first state having a maximum number of the survivor paths may be selected as a backtracking state of the second transport block. Backtracking decoding is performed on the second transport block by using the survivor paths on the backtracking state, so as to obtain a decoding result.

Abstract: A method, a device, and a system for implementing an electronic whiteboard in an audio/video conference are provided. The method includes the following steps. An electronic whiteboard is created. A first extended message is sent to a first user equipment (UE) and a second UE in a Session Initiation Protocol (SIP) audio/video conference, so as to instruct the first UE and the second UE to initialize the electronic whiteboard. A second extended message containing an operation instruction of the electronic whiteboard sent by the first UE is received. The second extended SIP INFO message is sent to the second UE. Thus, a function of the electronic whiteboard is integrated in an SIP audio/video conference.

Abstract: A method, system and device for device capabilities exchange are provided. The method for device capabilities exchange includes: receiving a device capability exchange request sent from an initiating Diameter node; and returning a device capability exchange answer to the initiating Diameter node according to a state of a state machine of a receiving Diameter node or a request type in the device capability exchange request. The method can optimize the existing method for updating and negotiating device capability information when a Diameter device is upgraded, reduce the amount of data exchanged over the network, reduce the repetition of database update performed by the Diameter nodes, and improve the robustness of network connection and system processing.

Abstract: A Generic Routing Encapsulation (GRE) bearing method, apparatus and system are provided. In the transmission and bearing of GRE frames, multiplexing frame header information of the GRE frames is obtained by inquiring mapping of the GRE frames; then the GRE frames that meet a predetermined multiplexing condition are set in payloads of one outer Internet Protocol (IP) frame according to the obtained multiplexing frame header information of the GRE frames. In this way, for data frames with small payloads, unnecessary encapsulation overheads are reduced, and the transmission efficiency of the data frames is improved. Thus, the network bandwidth resources are saved, and the system transmission performance is improved.

Abstract: Provided is a method for transferring messages by establishing a chat room data transfer channel, applicable to an instant message (IM) chat room system based on Session Initiated Protocol (SIP)/Instant Message and Presence Leveraging Extensions (SIMPLE). The method includes the steps of: establishing a first data transfer channel after a negotiation process between the chat room server and an IM server associated with a client, establishing a second data transfer channel after another negotiation process between the IM server and the corresponding client, and transmitting the messages between the client and the chat room server through the first data transfer channel and the second data transfer channel. The method may support a user to join in the chat room and to transmit messages to other users.

Abstract: A bias circuit and a voltage-controlled oscillator (VCO) thereof suitable for improving the stability of the bias circuit are provided. The bias circuit includes: an error amplifier circuit, having an inverting input terminal connected to a reference voltage; a voltage-controlled current source, having a voltage control terminal connected to a voltage output terminal of the error amplifier circuit, in which a current generated by the current source is controlled by a voltage at the voltage output terminal of the error amplifier circuit; a delay control circuit, having a current input terminal connected to the voltage-controlled current source, an output terminal connected to a non-inverting input terminal of the error amplifier circuit, and a voltage input terminal connected to a supply terminal of the control voltage, and the delay control circuit is adapted to adjust an output voltage of the delay control circuit according to a control voltage.

Abstract: The present invention discloses a method for providing QoS guarantee by an edge router, the edge router transporting user traffic between the access network and core network, the method comprising: creating a service traffic flow classification table; establishing a plurality of label switching paths; configuring the attributes of the label switching paths; classifying and conditioning the service traffic flows entering into the core network at a downlink interface of an edge router according to the service traffic flow classification table; forwarding the processed traffic by an uplink interface of the edge router according to the attributes of the label switching paths. The present invention also discloses an apparatus for providing QoS guarantee by an edge router. Using the present invention, an edge router can provide exact QoS guarantee and QoS routing control for the application flows.

Abstract: A realization system, method and device for multimedia service are provided.

Abstract: The present invention provides a method, a device and a system for controlling VoIP border security. The system includes: a border security controller, which includes two dynamic information tables, an active session information table and a registered user information table, acting as the basis of security control; and a security policy server, in communication with the border security controller, adapted to provide a security policy to the border security controller and check the security of a signaling packet forwarded by the border security controller. The border security control system first checks the security and processes the packets of a user datagram received according to the active session information table and the registered user information table, and allows a packet which passed the security processing to pass, and then performs protocol processing on the media packet and signaling packet which are allowed to pass.

Abstract: The present invention discloses an interactive method for a WLAN UE accessing a new operation network, which comprises: when the WLAN UE which has accessed a first Visited Mobile Communication Network needs to re-select a second Visited Mobile Communication Network to access, the WLAN UE sending authentication information to a Home Network of the WLAN UE through a WLAN Access Network and the second Visited Mobile Communication Network; after receiving the authentication information, the Home Network of the WLAN UE authenticate the WLAN UE according to the authentication information via the second Visited Mobile Communication Network, and sending an access instruction to the WLAN Access Network through the second Visited Mobile Communication Network; and on receiving the access instruction, the WLAN UE accesses the second Visited Mobile Communication Network via the WLAN Access Network.