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HS-DSCH channel timing method

A channel and timing technology, which is applied in the timing field of HS-DSCH channels, can solve problems such as early activation point, increased risk of call drop, and no solution found, so as to improve system performance and avoid timing deviation.

Inactive Publication Date: 2008-07-02
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, when the SRNC controls the NodeB and UE to complete the synchronous activation, the activation point on the NodeB side and the UE side will be relatively advanced, so that after the activation point arrives, the UE side has not received all RRC signaling, and the NodeB side has activated the new configuration. , increasing the risk of dropped calls
[0012] At present, the 3GPP agreement in October 2006 still has such defects, and no related solutions have been found

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  • HS-DSCH channel timing method

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Embodiment Construction

[0026] Attached below figure 1 A further detailed description of the implementation of the technical solution:

[0027] see figure 1 As shown, it is a schematic diagram of the node synchronization process between SRNC and NodeB for the HS-DSCH channel, where T1 is the sending time of the SRNC downlink node synchronization frame, T2 is the acceptance time of the NodeB receiving the downlink node synchronization frame, and T3 is the uplink node B The sending time of the node synchronization frame, T4 is the receiving time of the RNC receiving the uplink node synchronization frame. Depend on figure 1 It can be seen that the round-trip delay between SRNC and NodeB is (T2-T1+T4-T3), and the transmission delay is (T2-T1+T4-T3) / 2, so RFN (RNCFrame Number, RNC frame number) and BFN ( The deviation of NodeB Frame Number (NodeB frame number) can be estimated as (T1+transmission delay-T2)=(T4+T1-T3-T2) / 2.

[0028] The HS-DSCH channel can also initiate the node synchronization procedu...

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Abstract

The invention discloses a timing method of an HS-DSCH channel, which is used for a WCDMA system including a service wireless network controller, a terminal and a node B. According to the method, when the terminal down link wireless bearings are all born by the HS-DSCH channel, an initial node synchronization is started to the HS-DSCH channel by the service wireless network controller to gain a time offset between a side RFN of the service wireless network controller and a side BFN of the node B of the HS-DSCH service, and a side initial connection frame number of the service wireless network controller is determined according to the RFN and the time offset. Through a side CFN timing by an RNC and a Node B which can be aligned of synchronization frame in the HS-DSCH channel node, the invention avoids the defect of the time offset of the RNC side CFN and increases the performance of the UTRAN system.

Description

technical field [0001] The present invention relates to timing technology, in particular to a timing method for a HS-DSCH channel (High Speed ​​Downlink Shared Channel) in a Wideband Code Division Multiple Access (WCDMA) system. Background technique [0002] CFN (Connection Frame Number, Connection Frame Number) is a frame counter used in the WCDMA system for transmission channel synchronization between UTRAN (Universal Terrestrial Radio Access Network, Universal Terrestrial Radio Access Network) and mobile terminal UE (User Equipment). CFN is also an important time parameter for SRNC (Serving Radio Network Controller, Serving Radio Network Controller) to control NodeB (Node B) and UE to complete configuration update synchronization activation. RNC needs to obtain CFN synchronized with NodeB and UE. The interface between RNC and NodeB is called Iub interface, and the interface between RNCs is called Iur interface. [0003] Starting from the Release-6 version of the 3GPP (Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04J3/06H04L29/06H04J13/02H04L29/10H04L12/28
Inventor 曾玲玲杨阳
Owner ZTE CORP