WO2009082854A1

WO2009082854A1 - Quick reconnection establishing method

Info

Publication number: WO2009082854A1
Application number: PCT/CN2007/003886
Authority: WO
Inventors: Wanshuai Zhang; Zihua Xu; Gang Chen; Zhiwei Peng
Original assignee: Zte Corporation
Priority date: 2007-12-28
Filing date: 2007-12-28
Publication date: 2009-07-09
Also published as: CN101803450B; CN101803450A

Abstract

A quick reconnection establishing method, which comprises: the first step, in the case of an access terminal and an access network can release the connection, both the access terminal and the access network do not release the channel resource, at the same time, they separately start up a timer for timing; the second step, before reaching the target time of the timer, when the access network receives the reactivation request from the access terminal, the access terminal and the access network separately make the respective timer stop, and transmit the data using the unreleased channel resource.

Description

The present invention relates to the field of communications, and in particular, to a method for establishing a fast reconnection. BACKGROUND In a UMB system, when data transmission is required between an access terminal in an idle state and an access network, first, a connection is established with the access network and various parameters are negotiated before data can be transmitted. As shown in Figure 1:

S102. The access terminal is in an idle state.

S104. The access terminal sends a "routing open request" message to the access network. S106: The access network returns a response message "Route Open Accept" to the access terminal, and carries a UATI (Unicast Access Terminal Identifier) assigned to the access terminal.

S108. After receiving the UATI, the access terminal sends a "UATI Assignment Complete" message to the access network.

S110: The access network sends a “configuration start” message to the access terminal, and starts negotiating related parameters.

S112. The access terminal and the access network perform session negotiation.

S114. The access network sends a “configuration complete” message to the access terminal, indicating that the session negotiation is completed. S116. Perform data transmission between the access terminal and the access network. After the data transmission between the access terminal and the access network is completed, the connection needs to be closed, and the access terminal returns to the idle state. as shown in picture 2:

S202. Perform data transmission between the access terminal and the access network.

S204: The data transmission is completed, and the access terminal sends a “connection closed” message to the access network. S206. The access terminal and the access network respectively release respective channel resources.

1 P 16589 S208. The access terminal returns to an idle state. The method for establishing and releasing the connection has the disadvantage that the process of establishing a connection between the access terminal and the access network is complicated, and the signaling interaction is many, resulting in a long connection establishment time, and the reconnection process after each connection release is repeated. The above steps. For some applications, such as PTT (Push To Talk) services, the connection between the access terminal and the access network is very frequent, and each time the connection is established, the duration is short. Release, and require the connection to be established quickly. Another example is the web browsing service. When the user clicks on the webpage, the connection is established, and a large amount of data is required to be transmitted in a short time; when the webpage appears, the user has no data traffic when viewing the webpage content, and the connection will be shut down. The characteristic of this kind of service is also that the connection is established frequently, and the connection is required to be established quickly. The above method of connection establishment will not meet the needs of these services. SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a method for establishing a fast reconnection, which can solve the shortcomings of multiple signaling interactions during a frequent connection establishment process and long establishment time, and simplify signaling interaction in the establishment process. , shortened connection establishment time. According to an aspect of the present invention, a method for quickly re-establishing a connection includes the following steps:

S302, in the case that the access terminal and the access network can release the connection, the access terminal and the access network do not release the channel resources, and start a timer to start timing respectively; Step S304, before the predetermined duration of the timer arrives When the access network receives the reactivation request from the access terminal, the access terminal and the access network respectively stop the respective timers and use the unreleased channel resources for data transmission; When the access network does not receive the reactivation request of the access terminal, the access terminal and the access network release the channel resources. In step S302, after the data transmission between the access terminal and the access network is completed, the access terminal sends a connection close message to the access network, and the connection close message carries a predetermined duration of the timer. In step S304, after the access terminal sends a reactivation request to the access network, the timer on the access terminal side is stopped. When receiving the reactivation request from the access terminal, the access network feeds back the reactivation accept message to the access terminal, and stops the timer on the access network side. The fast reconnection establishing method of the present invention can be applied to a super mobile broadband system. The fast reconnection establishment method of the present invention requires complete construction except for the first connection establishment.

2 P 16589 In addition to the vertical process, the subsequent reconnection establishment process simplifies the signaling interaction during the establishment process and shortens the connection establishment time. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a UMB connection establishment process according to the present invention; FIG. 2 is a schematic diagram of a UMB connection release process of the present invention; FIG. 3 is a flowchart of a fast reconnection establishment method of the present invention; A schematic diagram of the fast reconnection establishment process of the present invention; and FIG. 5 is a schematic diagram of a fast reconnection establishment process in the PTT service of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. The invention relates to a method for quickly reconnecting in a UMB (Ultra Mobile Broadband) system, and belongs to the technical field of mobile communication. The general idea of the present invention is: When the connection is released, the access terminal and the access network do not release the channel resources first, but set a timer separately. If the access network receives a "reactivation request" from the access terminal before the timer expires, both parties stop their respective timers and use the unreleased channel resources for data transmission. If the timer expires, both parties release channel resources. 3 is a flow chart of a method for establishing a fast reconnection according to the present invention. As shown in FIG. 3, the method includes: Step S302: When an access terminal and an access network are capable of releasing a connection, neither the access terminal nor the access network release channel resources, and simultaneously start a timer to start timing; Step S304, before the access network receives the reactivation request from the access terminal before the predetermined time duration of the timer arrives, the access terminal and the access network respectively stop the respective timers and use the unreleased channel resources. In the case where the timer arrives at a timing and the access network does not receive a reactivation request from the access terminal, the access terminal and the access network release the channel resources.

3 P 16589 In the step S302, after the data transmission between the access terminal and the access network is completed, the access terminal sends a connection close message to the access network, where the connection close message carries a predetermined duration of the timer. In step S304, after the access terminal sends a reactivation request to the access network, the timer on the access terminal side stops counting. When receiving the reactivation request from the access terminal, the access network feeds back the reactivation accept message to the access terminal, and stops the timer on the access network side. 4 is a schematic diagram of a fast reconnection establishment process of the present invention. As shown in Figure 4:

S402. A connection exists between the access terminal and the access network, and data transmission is performed.

S404, the data transmission is completed, the access terminal sends a "connection closed" message to the access network, the message carries the timer Tclose duration, and starts the timer Tclose; the access network receives the "connection closed" message, starts the timer Tclose.

S406. The access terminal needs to transmit data before the Tclose timeout, send a "reactivation request" message to the access network, and stop the timer Tclose.

S408: After receiving the "Reactivation Request" message, the access network returns a "Reactivate Accept" message to the access terminal, and stops the timer Tclose. S410. The access terminal and the access network use unreleased channel resources for data transmission.

S412. If the timer Tclose times out, the access terminal and the access network respectively release respective channel resources.

S414. The access terminal returns to an idle state. Through the above steps, the present invention reduces the steps when the connection between the access terminal and the access network is frequently established, reduces the signaling interaction of the connection establishment, and shortens the connection establishment time. Figure 5 shows the flow of a quick reconnection between an access terminal and an access network in a PTT service. As shown in Figure 5, the process includes:

S502. The access terminal and the access network have established a connection, allocated channel resources, and are performing data transmission.

S504, the data transmission is completed, the user releases the PTT button, and the access terminal sends a "connection close" message to the access network.

4 P16589 S506. The access terminal starts the timer Tclose.

S508. The access network receives the "connection closed" message sent by the access terminal, and starts the timer Tclosc.

S510: The timer Tclose of the access terminal times out. If the timer expires, go to S514. S512, whether the user presses the PTT button, if not pressed, go to S510; if pressed, turn

S518.

S514. The access terminal releases channel resources.

S516, the access network timer Tclose times out, and the access network releases channel resources. S518, the access terminal stops the timer Tclose.

S520. The access terminal sends a "reactivation request" message to the access network.

S522, the access network receives the "Reactivation Request" message, and returns a "Reactivate Accept" message to the access terminal.

S524, access network stop timer Tclose.

S526. The access terminal and the access network use the original channel resources for data transmission. The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

5 P 16589

Claims

Claim

A method for establishing a fast reconnection, the method comprising the following steps: Step S302, in the case that an access terminal and an access network are capable of releasing a connection, the access terminal and the access network Do not release channel resources, and start a timer to start timing separately;

Step S304: Before the access network receives the reactivation request from the access terminal, the access terminal and the access network respectively make respective timers before the predetermined duration of the timer arrives. Stop timing and use unreleased channel resources for data transfer.

The method for establishing a fast reconnection according to claim 1, wherein, in the case that the timer arrives at a timing and the access network does not receive a reactivation request from the access terminal, the access terminal And releasing the channel resources with the access network.

The method for establishing a fast reconnection according to claim 2, wherein in the step S302, after the data transmission between the access terminal and the access network is completed, the access terminal Sending a connection close message to the access network, where the connection close message carries a predetermined duration of the timer.

The method for establishing a fast reconnection according to claim 3, wherein in the step S304, the access terminal sends a reactivation request to the access network to make the access terminal side The timer stops counting.

The method for establishing a fast reconnection according to claim 4, wherein, in the step S304, when the access network receives a reactivation request from the access terminal, the access network accesses the access The terminal feedback reactivates the accept message and stops the timer on the access network side from timing.

The fast reconnection establishing method according to any one of claims 1 to 5, characterized in that the fast reconnection establishing method is used for a super mobile broadband system.

The method for establishing a fast reconnection according to claim 6, wherein the fast reconnection establishing method is used for a service that requires frequent connection establishment.

6 P 16589 The fast reconnection establishing method according to claim 7, wherein the fast reconnection establishing method is used for a push-to-talk service. The fast reconnection establishing method according to claim 7, wherein the fast reconnection establishing method is used for a web browsing service.

P 16589