Method for data transmitting management in UE switching process
A data transmission and switching process technology, applied in digital transmission systems, data switching networks, transmission systems, etc., can solve problems such as packet loss, increased signaling load, and increased system load, so as to reduce the probability of loss and reduce load. , the effect of improving the ability to effectively process
Inactive Publication Date: 2008-04-09
UT STARCOM (CHINA) CO LTD
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Problems solved by technology
[0010] When the UE is handed over between different cells, if the data related to the UE needs to be switched between different data transmission management boards, the following problems will be caused: When the UE is frequently handed over, if the UE is located at the edge of two cells, it may Ping-pong switching will occur, which will increase the signaling load between boards, thereby reducing the call processing capability of the RNC system and making the system unstable
For services transmitted in TM (transparent transfer mode) or UM (unacknowledged transfer mode), data packets may be lost due to switching gaps
For services transmitted in AM mode, the probability of retransmission of data packets will increase during the switching gap, resulting in an unnecessary increase in system load
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[0020] Fig. 2 is a schematic structural diagram of a distributed wireless network controller used in an embodiment of the present invention. It should be pointed out that the present invention is not limited to the specific structure shown in FIG. 2, and the radio network controller can use IP such as ATM switching and support quality of service (Qos) when performing information transmission with other network elements in the system. Exchange and other exchange methods. The radio network controller participates in user mobility management, and is responsible for allocating radio resources for the UE and managing data transmission of the UE when handover occurs between different cells under the jurisdiction of the same radio network controller.
[0021] The structure of the distributed wireless network controller shown in Figure 2 is as follows:
[0022] On the physical interface, there are three main interfaces between RNC and external network elements: Iu interface, which pr...
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A method for carrying through data transmission manage in RNC in UE switch process. This method is realized in distributed arranged structure RNC, comprising the following steps of: radio signaling management board receiving switching request transmitted by UE in the same RNC cell from the first ATM interface board; radio signaling management board establishes mapping relationship between data transmission management board and the second ATM interface board, said data transmission management board has mapping relation with the first board before switching; radio signaling management board informs UE to transmit data between data transmission management board and the second ATM interface board. When UE switches in the two cells managed by RNC, this method can avoid same one UE data rearranges frequently in different data transmission management board, sequentially reduce system signaling transmission and processing burden, improve system efficiency, simultaneity reduce system data package losing percentage.
Description
technical field [0001] The present invention generally relates to a radio network controller, and specifically relates to a method for managing data transmission in a radio network controller during UE handover. Background technique [0002] The radio network controller (RNC) is an important component of the third-generation mobile communication broadband code division multiple access system (3G W-CDMA), which completes the access control of the wireless network, the management of wireless resources, and the establishment of wireless links. And release and other important functions. The data transmission management method in the UE handover process of the present invention is implemented in a radio network controller with a distributed architecture. In this distributed wireless network controller, the wireless signaling management function and the data transmission management function are respectively implemented on different processing boards. Each function can be impleme...
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IPC IPC(8): H04Q7/38H04L12/56H04W36/08H04W36/18H04W36/36H04W88/12
CPCH04W36/0055H04W88/12H04W80/04H04W36/0011H04W36/0058
Inventor 林平张春张道立
Owner UT STARCOM (CHINA) CO LTD