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.

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.

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.

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.

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.

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.