110 results about "Call set-up time" patented technology

The invention discloses a method for realizing trunking traffic and a trunking user terminal. The method is realized in a digital trunking communication system based on a time division long term evolution (TD-LTE) technique. In the digital trunking communication system based on the TD-LTE technique, a logical channel and a transmission channel which are used for realizing the trunking traffic arenewly added, wherein the logical channel is a trunking paging control channel (TPCCH) and a trunking traffic channel (TTCH), the transmission channel is a trunking paging transmission channel (TPCH),and identifications and mapping approaches which are used for distinguishing the logical channel from the other logical channels are respectively defined for the TPCCH and the TTCH. Through the TPCCH, paging and control messages, such as the call setup, the call release, the discourse right notice and the like of the trunking traffic, are loaded. Through the TTCH, the data messages of the trunking traffic are loaded. By applying the scheme of the invention, call setup time can be shortened, and resource utilization ratio can be increased.

In a CDMA wireless communication system (200) a dispatch call can be established between two CDMA mobile stations (202, 226), or between other mobile stations and the CDMA mobile station, or between a CDMA mobile station and a computer (236) located outside of the wireless system. To reduce the delay normally association with call set up in a CDMA system, a dispatch processing network (128, 144) is provided in addition to a telephony switch (118). Dispatch calls and call set up requests are routed to the dispatch processing network from the radio access network (110) which includes base stations (204, 206). Once a dispatch call request is made, while the dispatch processing network begins setting up a traffic channel for the originating mobile communication device, the target is also paged, and upon responding, set up on a traffic channel. The concurrence of establishing radio links with the target and originating communication devices substantially reduces dispatch call set up time.

The invention discloses a method for achieving a group calling business. The method is achieved based on a broadband digital trunking communication system which is achieved on the basis of a time division-long term evolution (TD-LTE) technology. As a TD-LTE system uses a full internet protocol (IP)-based and flattened network framework, a base station communicates with a core network directly, accordingly, the time delay of a control plane and a user plane is small, and calling setting time is shortened; and as the TD-LTE technology uses an advanced air interface technology, so that the transmission delay of a wireless network is reduced greatly; in addition, during the setting process of group callings, a signaling message parallel processing mode is used, that is resources are allocated to a calling terminal and a called terminal in parallel, a radio bearer, an S1 bearer and the like are built, and accordingly, the calling setting time is further shortened; and as the TD-LTE system is achieved in a packet domain, smooth backward evolution is facilitated.

To initiate a communication session between a mobile station and an application server, the mobile station sends a reconnect message to a base station to reestablish a communication channel for a dormant packet data session. The reconnect message includes an encapsulated call control message to said application server. The base station extracts the call control message from the reconnect message and forwards the call control message towards the application server, while proceeding to reestablish a communication channel with the mobile station.

The invention discloses a wireless self-organized network-based integrated heterogeneous emergency communication network. The emergency communication network comprises a layered framework, a layered framework-based system structure and a layered framework-based network structure, wherein the layered framework consists of a communication network layer, an information acquisition layer, a distributed computation layer and an application service layer sequentially from bottom to top; the system structure consists of a network infrastructure layer, a public service layer, a specific functional layer and an application system layer sequentially from bottom to top; and the network structure is a layered three-dimensional communication network structure. The emergency communication network provided by the invention can adapt to various emergency network deployment situations, can provide network capacity and a coverage area at any given time or place as required, can be conveniently expandedto a network of a required scale, enhances situational perception capability of an emergency occasion by comprehensively utilizing various communication measures, shortens transmission time delay andcall establishment time, can support the requirement on the performance of various services and expands the communication ranges and service support capabilities of various user groups on different emergency occasions.

The invention discloses a trunked service implementation method, comprising: a trunked user terminal detects whether dispatching information of a TPCCH (trunked paging control channel) exists periodically; if so, a TB (transmission block) containing information borne by the TPCCH is searched, and the TB is decoded to acquire the information borne by the TPCCH; a user terminal detects the PDCCH (physical downlink control channel) in each TTI (transmission time interval), searches the TB of the borne information, successfully decodes as well as configures and establishes a service plane channel; a calling trunked user terminal adopts the established service plane channel to initiate a conservation; and a called trunked user terminal detects the PDCCH in the TTI, searches the TB of the information borne by a TTCH (trunked traffic channel), and decodes the searched TB. The invention also discloses a trunked user terminal. After the embodiment of the invention is applied, the time for establishing a calling is shortened, and the resource utilization rate is improved.

Disclosed is the method for transmitting paging information in wireless communication system, a core network transmits a paging message including call related information and / or terminal related information, at least one of a network or terminal performs a next operation based on the paging message, thereby effectively minimizing call setup time

Various embodiments are described to address the need for providing substantially reduced PTT call setup times and more efficient wireless bandwidth utilization for PTT sessions utilizing an IP-based protocol. The use of non-IP messaging between an originating MS (101) and PCF (131) and a target MS (102) and PCF (132), the use of IP-based messaging between the PCFs, the use of access channel signaling by the originating MS, and the generation of SIP responses by a target PCF on behalf of the target MS are described. Embodiments incorporating some or all of these protocol changes, can provide either, or both, reduced end-to-end call setup time for PTT as it presently exists in IS-2000 systems or reduced bandwidth consumption.

Disclosed is a mobility management routing (MMR) node that performs location management signaling operations associated with mobile subscribers. The MMR node may also perform the signaling message routing functionality typically provided by a network routing node, such as a signaling system 7 (SS7) signal transfer point (STP) or an SS7-over-Internet protocol signaling gateway (SG). The MMR node caches mobile subscriber information extracted from messages transmitted between an HLR and a VLR and responds to some of the messages using the cached information. As a result, signaling message traffic and call setup time in a mobile communications network are reduced.

The invention discloses a system and a method for implementing circuit switched fallback (CSFB) service of evolved packet system (EPS). The method comprises that: when user equipment (UE) resides in an EPS network and is jointly registered in a mobility management entity (MME) and a mobile switching center (MSC) and circuit switched (CS) service happens, CS call session is established between theUE and the MSC through an EPS data transmission channel; an eNodeB acquires a radio measurement report of the UE according to the indication of the MME, determines a fallback target network of the UEand sends a switching request to the MME, and the MME sends the switching request to the MSC; the MSC executes the CS process, acquires radio resource access parameters of a target network and returns switching response to the MME, and the MME sends a switching command to the UE through the eNodeB; and the UE is switched to the target network according to the radio resource access parameters in the switching command to perform subsequent CS call. The method and the system can quicken the call establishing speed, and shorten the call establishing time of a calling process and a called process.

Various embodiments are described herein to address the need for providing substantially reduced PTT call setup delays. Modifications to channel assignment request messaging (400), such as an IS-2000 Reconnect Message and an IS-2000 Origination Message, are described. In addition, the use of common control channel signaling (e.g., 201), changes to page response messaging (e.g., 301) and new uses for A9-Short Data Delivery messaging (e.g., 203 and 303) are described. Embodiments incorporating some or all of these protocol changes, can provide reduced end-to-end call setup time for PTT as it presently exists in IS-2000 systems.

A system and method is provided for fast call set-up in a wireless communication system. A base station sets up a call from a mobile station by sending null frames to the mobile station on a forward traffic channel instead of sending a base station acknowledgement order. The mobile station sends a traffic channel preamble to the base station on a reverse traffic channel instead of sending a mobile station acknowledgment order. The fast call set-up procedure of the present invention reduces the call set-up time from approximately two (2) to three (3) seconds to approximately two hundred milliseconds (200 msec) to three hundred milliseconds (300 msec).

A User Equipment (UE) in an Internet Protocol Multimedia Subsystem (IMS) service network with a shortened Push-To-Talk (PTT) call setup time, an ISM service network, and a PTT call setup method therein are provided. In the UT, a transmitter requests from a Domain Name Server (DNS) an address of a Push-to-talk over Cellular (PoC) server. A receiver receives the address of the PoC server from the DNS. A controller directly provides a PTT call to the PoC server using the address. In the IMS service network, the PoC server directly receives the PTT call from an originating subscriber and delivers the PTT call to a destination subscriber. A Serving Call Session Control Function (S-CSCF) entity provides information about the destination subscriber to the PoC server. A home subscriber server stores subscriber addresses and provides the information about the destination subscriber. The DNS provides the address of the PoC server to the originating subscriber.

Various embodiments are described which can provide reduced PTT call setup times and a greater degree of service integration for PTT users. A PTT originator's MSC (171) notifies (205) the PTT server of a PTT session request before the originator (101) has the channel and data connection resources to send a PTT session request itself. This enables the PTT server (161) to trigger (207) the establishment of channel and data connection resources for the PTT target (102) before the originator is able to trigger the same by sending a PTT session request itself. Also, the target's MSC (172) notifies (221) the PTT server after the target responds to a page for the session, enabling the PTT server to indicate PTT session acceptance (223) on behalf of the target before the target has the channel and data connection resources to respond to a PTT session request.

Various embodiments are described herein to address the need for providing substantially reduced PTT call setup delays. Modifications to channel assignment request messaging (400), such as an IS-2000 Reconnect Message and an IS-2000 Origination Message, are described. In addition, the use of common control channel signaling (e.g., 201), changes to page response messaging (e.g., 301) and new uses for A9-Short Data Delivery messaging (e.g., 203 and 303) are described. Embodiments incorporating some or all of these protocol changes, can provide reduced end-to-end call setup time for PTT as it presently exists in IS-2000 systems.

A method of reducing a call set-up time for a call between a pair of H.324-like terminals includes providing a first capability for the call, processing the first capability to form a first message, establishing a bearer channel, and transmitting the first message from the first terminal to the second terminal through the telecommunications network using the bearer channel. The first capability is associated with an initial mode of operation for the call. The method also includes receiving a second message transmitted from the second terminal to the first terminal. The second message includes a second capability associated with the initial mode of operation for the call. The method further includes determining that a conflict exists between the first capability and the second capability, resolving the conflict by modifying at least one of the first capability or the second capability, and transmitting information from the first terminal to the second terminal.

In a telecommunications system (100), a method and apparatus for buffering the initial speech of an initial speaker in a push-to-talk call is disclosed. The method includes the steps of determining at least one participant or group to call (410, 510), sending a call request to the at least one participant or group (520), determining if the at least one participant or group is registered with the telecommunications system, notifying the initial speaker to begin speaking after determining at least one participant is registered with the telecommunications system but prior to connecting all called parties, receiving and digitizing voice packets from the initial speaker, storing the digitized data packets in a storage medium and transmitting the digitized voice packets when a predetermined packet transmission triggering event occurs. The apparatus for buffering the initial speech burst of an initial speaker in a call includes a first server (140) and a second server (150) communicatively connected to the first server. The second server is programmed to execute the steps of the method described above.

A method of initiating a call between users with reduced call set-up times using one or more telecommunication networks. The method is provided between at least a pair of H.324-like terminals coupled to the one or more telecommunication networks. The method includes providing one or more preferences for a call associated with a first terminal and a second terminal. The one or more preferences are associated with an initial mode of operation for the call between the first terminal and the second terminal. The method also includes processing the one or more preferences as a Custom Message, embedding the Custom Message in a predetermined field of a call initiation message, and transferring the Custom Message from the first terminal to the second terminal through a telecommunication network using call signaling. The method further includes processing the Custom Message by the second terminal, transferring a Custom Response Message by the second terminal using a call signaling response message to indicate to the first terminal the initial mode of operation, and exchanging information between the first terminal and the second terminal after the initial mode of operation has been established.

For use in a wireless network, a base station that reduces the call set-up time for a time-sensitive application. The base station comprises a message controller for receiving an incoming control message that initiates the time-sensitive application in a mobile station. In lieu of a conventional page message, the message controller transmits a short data burst message to the mobile station to initiate the time-sensitive application. The short data burst message is transmitted in a forward control channel. The mobile station completes the set-up by transmitting back an L2 Acknowledgment message in lieu of a conventional page response message.

A proactive speculation method decreases the call setup time for private calls (200) and selective dynamic group calls (300). In a push-to-talk dispatch network (40) an originating mobile unit (10) sends a wake-up packet (54, 114) to the dispatch network (40). Prior to initiating the push-to-talk function, the target mobile units (20–30) receive a wake-up packet (68, 146–148) from network (40). Thereby, prior to establishing the push-to-talk function, each of the mobile units in the push-to-talk call have been coupled via RF links. If the originating mobile unit has a current IP address, direct wake-up packets (72) may be sent.

A system and method of testing call performance of a plurality of mobile telephones is provided. In one embodiment the method comprises storing in a memory of a test device, data for one or more test scenarios that each comprises associated test parameters for attempting a plurality of telephone calls, establishing a first Bluetooth connection between the test device and a first mobile telephone, and concurrently with said first Bluetooth connection, establishing a second Bluetooth connection between the test device and a second mobile telephone. The method further comprises transmitting commands to the first and second mobile telephones via the Bluetooth connections to cause the mobile telephones to attempt to establish a plurality of telephone calls of the test scenarios, and monitoring the plurality of telephone calls of the mobile telephones to determine test results data. The method further includes attempting and monitoring a plurality of telephone calls of the mobile telephones to determine test results data with one or more remote call servers and outputting the test results data to a remote computer system for processing to determine the number of dropped calls, call set up times, number of calls successfully initiated, number of calls having two way speech, and other data.

This invention relates to group system call method, which comprises the following steps: main call starting group calls; basic station forming relative address through mapping relationship according to main call number or group label and to directly call user in basic station; basic station establishing call business channel for main call and called users for business matching. This invention needs not group transfer codes analysis and conversion through relationship between call number and address to call users on basic station side.

The need for reducing the time required for call setup in a wireless communication system (100) is addressed herein. A base station (BS 104) sends a channel assignment message to a mobile station (MS 102) and performs traffic channel initialization procedures with the MS. After completing the traffic channel initialization procedures, the BS sends a base station acknowledgment message to the MS and proceeds to transmit signaling to the MS without waiting to receive an MS acknowledgment in response to the base station acknowledgment message. Thus, the time normally taken to receive the MS acknowledgment is saved and call setup time reduced.

The invention discloses a method for acknowledging internal call of subscribed group users, comprising the following steps that: a called side subscribed group user authentication device receives a call request message which is initiated by a calling user to a called user and forwarded by a core network node; and the called side subscribed group user authentication device determines that the call initiated by the calling user to the called user is the internal call of the subscribed group users after judging that the call request message carries a subscribed group internal call identifier, wherein the subscribed group internal call identifier is added into the call request message after a calling side subscribed group user authentication device determines that the calling user and the called user belong to the same subscribed group. With the method provided by the invention, a call flow in a creation process of the internal call between the subscribed user groups is modified, a signaling query flow from the called side to the calling side is simplified, call creation time is shortened and efficiency of creating the internal call between the subscribed group users is improved.

A mobile communication device including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a first network supporting only Packet-Switched (PS) services or a second network supporting Circuit-Switched (CS) services. The controller receives a rejection message of a Tracking Area Updating (TAU) procedure from the first network via the wireless transceiver when a Circuit Switch Fallback (CSFB)-related call originated from or terminated to the mobile communication device is pending, determines whether the rejection message includes a predetermined rejection cause, and in response to the rejection message including the predetermined rejection cause, selects the second network to make the CSFB-related call via the wireless transceiver without re-attaching to the first network.

Methods and apparatus for intelligently selecting and operating one or more air interfaces of a mobile wireless device for e.g., call setup time reduction. In one embodiment, operation of a high speed cellular interface is selectively adjusted or disabled or switched out when not required so as to minimize call setup times by, e.g., using a different cellular interface to receive pages. In one implementation, the wireless device includes a high-speed cellular interface, a lower-speed cellular interface, and a WLAN (e.g., Wi-Fi) interface.

A codec selector, and a corresponding method for establishing media channels between a local endpoint and a remote endpoint, are disclosed. The codec selector and method are useful with a media endpoint that is constrained to have matching transmit and receive codecs. The method comprises sending a request to a remote endpoint to open a first transmit channel. Upon receiving a corresponding request from the remote endpoint for its transmit channel, the two requests are compared. If the two requests do not match, the first transmit channel is closed (whether or not it has been acknowledged by the peer). A second transmit channel, compatible with the remote endpoint's request, is then requested. A method for detecting that the remote endpoint is using a similar procedure, and a procedure for synchronizing when both endpoints are constrained, are also disclosed.The present invention reduces call setup time in most instances, and provides reliable channel setup for constrained endpoints.

A method of initiating a call between users with reduced call set-up times using one or more telecommunication networks. The method is provided between at least a pair of H.324-like terminals coupled to the one or more telecommunication networks. The method includes transmitting a call signaling message from a first terminal to a second terminal through a telecommunication network to initiate a call, establishing a bearer channel between the first terminal and the second terminal once the call signaling message has been received by the second terminal, and determining a common mobile level. The method also includes determining two or more H.245 messages associated with set up parameters for an initial predetermined mode of operation, concatenating the two or more H.245 messages into one SRP command frame according to a predetermined size of the SRP command frame, and transmitting the SRP command frame including the two or more H.245 messages from the first terminal to the second terminal through a telecommunication network. The method further includes transmitting an SRP acknowledge message by the second terminal once the SRP command frame has been received by the second terminal, processing at least the two or more H.245 messages during a predetermined time period, and establishing the initial predetermined mode of operation between the first terminal and the second terminal through the bearer channel.

The invention provides a mobile terminal and a cell fallback method thereof. The method comprises the following steps: a mobile terminal receives a paging request sent by an MME, stores position information and TAI information of the paging request at the moment, and sends an expansion service request to the MME; after the call is finished, the mobile terminal stores the frequency point information of the fallback cell; when the mobile terminal receives the paging request sent by the MME again, whether the TAI information of the resident cell at the moment is consistent with the TAI information of the last time or not is judged; if yes, whether the distance between the position of the current time and the position of the last time is smaller than a threshold value or not is measured; and if yes, the mobile terminal carries out fallback according to the fallback cell frequency point information stored last time. According to the method, the cell fallback time of the mobile terminal is greatly shortened, so that the whole call establishment time of the mobile terminal is greatly shortened, and the user experience is improved.

The invention discloses a single call service establishing method. The method comprises the steps that a calling terminal initiates a single call establishing request which comprises the content of feasible media negotiation to a called terminal through a cluster server; the called terminal is combined with the content of feasible media negotiation to carry out a local media negotiation decision, and sends a ringing prompt which comprises a media decision result to the calling terminal through the cluster server; the calling terminal and the called terminal carry out resource distribution for the single call service at the same time; after a called user answers the single call, the called terminal sends call response to the calling terminal through the cluster server; and the calling terminal sends call confirmation to the called terminal through the cluster server. Through the application of the embodiment of the invention, the call establishing time can be effectively shortened, and the influence caused by the serialization of a calling terminal resource process and call control signaling is effectively reduced.