34results about How to "Shorten call setup delay" patented technology

The invention discloses a group call business realizing method which is realized on the basis of a TD-LTE broadband digital trunking communication system to carry out network register and trunking business register when each user terminal in the system starts; when group call needs to be built, comprising: a calling user terminal sends a group call request to a network side to ask for building group call; the network side builds S5/S8 load bearing for the call; the network side distributes uplink resource for the calling user terminal and builds a radio bearer and a S1 load bearing; at the same time, the network side distributes shared downlink resource to called user terminals belonging to the same district in all called user terminals corresponding to current call, and notices the called user terminals; the network side grants speech right to the calling user terminal and notices the called user terminals to finish building group call. If applied, the method of the invention can well shorten call building time delay and can progress smoothly and backwards.

The invention provides the fast call method between the calling and the being called in a mobile communications system, simplifying the NAS signaling order between the UE and the CN in the call process, omitting authentication, encryption, security patterns and TMSI re-allocation process in the call setting process. As we have completed the authentication encryption, safe mode orders when users switch on the machine, cyclical location updating and routing updates, so the encrypted authentication, security model are not needed in call setup time. For the business itself, data can be encrypted at the operational level, which would guarantee the safety of operations, and save the time. By optimizing the non-Signaling access layer, the invention achieves reducing the time of call setting. The method can reduce call, set up delay and increase users' terminal satisfaction.

The invention discloses a session establishing method and a session establishing device in a service server of a fixed and mobile network fusion technology-based communication system. The method comprises the following steps of: after the service server receives a call request from a calling user terminal, acquiring the position information of a mobile terminal related to a called number according to the called number in the call request and determining whether a minimum distance difference value in one or more distance difference values between one or more fixed terminals and mobile terminals is less than a first threshold value or not according to the acquired position information of the mobile terminal and the position information of the one or more fixed terminals related to the called number; and if the minimum distance difference value is less than the first threshold value, routing the call request to a fixed terminal corresponding to the minimum distance difference value. The service server directly routes the call request to the fixed terminal, so that radio air resource is saved effectively. Moreover, time delay of call establishment can be reduced effectively and the success rate of call establishment is increased.

The method comprises: the service request message is packaged into the radio resource control connection request message; when user end initiates a calling, establishes the time-delay sensitivity service, and needs to start a fast call establishing process, it makes the non-key expansion for the radio resource control connection request message in order to add the service request message and the necessary access layer information into the expansion part; the necessary access layer information means the essential access layer cell in the initial directly-transmitted message; after radio network controller receives the expanded radio resource control connection request message, it packages the service request message of non access layer into the directly-transmitted message of IU interface, and then transmits the directly-transmitted message of IU interface to the core network.

The present invention discloses a hierarchically-networked broadband trunking communication system and a point-to-point calling method thereof. The broadband trunking communication system comprises at least a first trunking core network, a second trunking core network and a third trunking core network; the first trunking core network and the second trunking core network are not only responsible for local trunking calling scheduling services, but also responsible for communicating with the third trunking core network; and the third trunking core network is not only responsible for local trunking calling scheduling services, but also responsible for trunking calling service control of the first trunking core network or the second trunking core network and trunking calling service control between the first trunking core network and the second trunking core network. The present invention also discloses a point-to-point calling method of the hierarchically-networked broadband trunking communication system.

The disclosed method to build calling fast comprises: the calling user sends request contained called user information for building connection to the network; the network calls the called user according to the information, and configures the channel source between calling and called users; once receiving information, the called user sends request for building connection to the network; the network configures channel source according to called user request; both the calling and called users send calling to network to build complete information; the network notifies them for dialogue and ends calling build process. This invention saves time to meet cluster users request.

The invention discloses a calling method, device and system for a cluster group of a multi-cluster control center. The method comprises the following steps: receiving information of the cluster groupsent by a cluster scheduling center; and establishing a cluster group call when the call is not established according to a call establishing request initiated by a subordinate cluster user terminal, and sending the call establishing request to other cluster control centers of the cluster group according to the information of the cluster group in order to request the other cluster control centers to send the call establishing request to subordinate cluster user terminals, so that the cluster user terminals of the other cluster control centers join the cluster group call. According to the calling method, device and system, each cluster control center can establish the cluster group call, and the call establishing request does not need to be routed to a fixed group anchor cluster control center through an IP link to establish the cluster group call, thereby reducing the call establishing delay and increasing the success rate of call establishment.

The invention discloses a method and a device for realizing CSFB (Circuit Switched Fallback). According to the scheme, a terminal, when determining a target cell to be fallen back is in a cell list composed of each of cells corresponding to preliminarily stored cell system messages, can obtain the cell system message corresponding to the target cell from the preliminarily stored cell system messages, and utilizes the obtained cell system message corresponding to the target cell to establish a CSFB call, so that the effect of shortening the call establishing time delay of the CSFB can be achieved on the basis of not needing to reading the corresponding cell system message from a network place again.

The invention discloses a standby method of a dual-card terminal and the terminal. Two subscriber cards, namely a data service card and a non data service card, are configured in the terminal. The method comprises that a configuration mode for switching between the data service card and the non data service card is detected, and a standby strategy corresponding to the configuration mode is selected; and when a VoLTE voice service cannot be used via the non data service card, the non data service card is resided in a 2/3G network directly or attached to the LTE network again according to the standby strategy.

The method comprises: the service request message is packaged into the radio resource control connection request message; when user end initiates a calling, establishes the time-delay sensitivity service, and needs to start a fast call establishing process, the radio resource control layer of user end firstly packages the service request message into the initial directly-transmitted message; if said package is successful, then making non-key expansion for the radio resource control connection request message, and then adding the initial directly-transmitted message containing the service request message into the expanded part; after radio network controller receives the expanded radio resource control connection request message, it packages the service request message of non access layer into the directly-transmitted message of IU interface, and then transmits the directly-transmitted message of IU interface to the core network.

The invention discloses a bearer setup method and device. The method comprises the following steps that: a terminal needs to newly set up a bearer in a switch process is determined; a switch request message is sent to a target base station, which the terminal is switched to, wherein a newly set bearer is carried in the switch request message; and the switch request message is used for enabling the target base station to set up all appointed bearers in the switch request message for the terminal. According to the technical scheme provided by the invention, a network side can simultaneously set up a voice bearer in the switch process of the terminal; therefore, the call dial rate is increased; the call setup time delay is shortened; and thus, the user experience is improved.

The invention relates to a method for realizing share link in a digital clustering system, which includes: a. wireless access network (RAN) receives the clustered call to set up a request, judges the present call whether is the first time call of the present call clustered group, if 'yes' it sets up a link for the present call, if 'not' it adds present call information in corresponding link of the call. Advantages: realized business link share, saved link resource and call set-up time and raised business quality.

The invention belongs to reducing call setup time-delay method in mobile communications systems. At present the call establishment needs a longer time, which affects quality of the subsequent delay-sensitive business to a large extent. One of the most important reasons for having a longer time to establish connection is that the length of the air interface signaling information packet is too great to transmit. The invention using wireless loading information exists to establish quasi-static parameters of the actual situation, notify part of this quasi-static parameters in advance through radio to the mobile, mobile storages this part of quasi-static parameters so reduce the size of wireless transmission of information carrying establish in the process of call establishing, so as to shorten the time to establish wireless bearing, thus shorten the whole process of call setting up delay time.

The invention provides a control channel distribution method and a control channel distribution device and belongs to the field of mobile communication. The control channel distribution method includes the following steps that: a channel request message transmitted by a terminal is received; an SDCCH sub channel allocated for the terminal is determined according to a frame number generated when the channel request message is received; and an instance assignment message carrying the information of the SDCCH sub channel is transmitted to the terminal, so that the terminal can transmit an SABM frame for establishing an L2 link in the SDCCH sub channel. With the control channel distribution method and the control channel distribution device of the invention adopted, call establishment delay can be shortened.