Method and system for ensuring data transmission in uplink pilot channel position change process
A technology of data transmission and pilot channel, which is applied in the field of data transmission and can solve problems such as the experience affecting user service quality and the inability of UE to send uplink scheduling requests.
Inactive Publication Date: 2010-12-22
深圳市恒程汇文化科技有限公司
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Problems solved by technology
During the period when the Node B starts to migrate the UpPCH until the new position of the UpPCH takes effect, because the original position of the UpPCH has expired and the new position of the UpPCH has not yet taken effect, the UE cannot obtain the uplink synchronization offset through steps 105-106, resulting in The E-RUCCH random access process initiated by the UE, that is, the failure of steps 105 to 107, makes the UE unable to send the uplink scheduling request to obtain authorization information, so the data transmission is temporarily interrupted, which affects the user's experience of service quality
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[0046] The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0047] Such as figure 2 As shown, the method for ensuring data transmission during the UpPCH position change process of the present invention includes the following steps:
[0048] In step 201, the RNC notifies the Node B of the effective time of the new UpPCH location of a certain cell belonging to the Node B and the information of the new UpPCH location; and at the same time notifies the UE of the effective time of the new UpPCH location and the information of the new UpPCH location.
[0049] Among them, the Node B is responsible for managing multiple cells. When a certain cell needs to change the UpPCH position, the RNC notifies the Node B to make the Node B move the UpPCH position of the cell; in addition, the UE is under the coverage of the cell belonging to the Node B. All UEs using E-DCH.
[0050] Further, the Node B starts to migrat...
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The invention discloses a method for ensuring the data transmission in an uplink pilot channel (UpPCH) position change process, which comprises: a wireless network controller notifies a Node B of the information on the effectiveness time of the new position of the cell UpPCH of a home station and the information on the new position of the UpPCH and notifies user equipment (UE) of the information on the effectiveness time of the new position of the UpPCH and the information on the new position of the UpPCH; after receiving the information on the effectiveness time of the new position of the UpPCH and the information on the new position of the UpPCH, the UE measures a timing advance value (TADV); and before the new position of the UpPCH comes into effect, the UE uses the measured TADV as uplink synchronous offset for strengthening the transmission of an uplink scheduling request by a random access uplink control channel to the Node B. The invention also discloses a system for ensuring the data transmission in the uplink pilot channel position change process. When the method and the system are used, the transmission of uplink data can be ensured before the new position of the UpPCH comes into effect, so that the service quality experience of the user is improved.
Description
technical field [0001] The present invention relates to the data transmission technology in Time Division Synchronous Code Division Multiple Access (TD-SCDMA, Time Division Synchronous Code Division Multiple Access) system, especially relates to in TD-SCDMA, a kind of uplink pilot channel (UpPCH, Uplink Pilot Channel) position change A method and system for ensuring data transmission during the process. Background technique [0002] In the frame structure of the TD-SCDMA system, the downlink pilot time slot is followed by the guard interval time slot and the uplink pilot time slot. In this way, when the base station receives the uplink synchronization signal transmitted by the user equipment (UE, User Equipment), it will receive the downlink pilot signals reflected by the base station and transmitted by other base stations after a period of time. The uplink synchronization signal causes interference, and the interference of the downlink pilot signal to the uplink synchroniz...
Claims
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IPC IPC(8): H04W48/08H04W56/00H04W72/12
Inventor 李群
Owner 深圳市恒程汇文化科技有限公司